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Emeric Brun107ca302010-01-04 16:16:05 +01001/*
Willy Tarreaucd3b0942012-04-27 21:52:18 +02002 * Sample management functions.
Emeric Brun107ca302010-01-04 16:16:05 +01003 *
4 * Copyright 2009-2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
Willy Tarreaucd3b0942012-04-27 21:52:18 +02005 * Copyright (C) 2012 Willy Tarreau <w@1wt.eu>
Emeric Brun107ca302010-01-04 16:16:05 +01006 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 */
13
Thierry FOURNIER317e1c42014-08-12 10:20:47 +020014#include <ctype.h>
Emeric Brun107ca302010-01-04 16:16:05 +010015#include <string.h>
16#include <arpa/inet.h>
Willy Tarreaudd2f85e2012-09-02 22:34:23 +020017#include <stdio.h>
Emeric Brun107ca302010-01-04 16:16:05 +010018
Willy Tarreau7e2c6472012-10-29 20:44:36 +010019#include <types/global.h>
20
Willy Tarreauc7e42382012-08-24 19:22:53 +020021#include <common/chunk.h>
Willy Tarreau23ec4ca2014-07-15 20:15:37 +020022#include <common/hash.h>
Willy Tarreau35b51c62018-09-10 15:38:55 +020023#include <common/http.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010024#include <common/initcall.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020025#include <common/standard.h>
Willy Tarreaua4312fa2013-04-02 16:34:32 +020026#include <common/uri_auth.h>
Emeric Brun53d1a982014-04-30 18:21:37 +020027#include <common/base64.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020028
Willy Tarreau9fcb9842012-04-20 14:45:49 +020029#include <proto/arg.h>
Willy Tarreaua4312fa2013-04-02 16:34:32 +020030#include <proto/auth.h>
31#include <proto/log.h>
32#include <proto/proxy.h>
Frédéric Lécaillefd95c622019-02-26 14:09:08 +010033#include <proto/protocol_buffers.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020034#include <proto/sample.h>
Willy Tarreaua4312fa2013-04-02 16:34:32 +020035#include <proto/stick_table.h>
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +020036#include <proto/vars.h>
Emeric Brun107ca302010-01-04 16:16:05 +010037
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +020038#include <import/sha1.h>
Thierry FOURNIER01e09742016-12-26 11:46:11 +010039#include <import/xxhash.h>
40
Willy Tarreau1cf8f082014-02-07 12:14:54 +010041/* sample type names */
42const char *smp_to_type[SMP_TYPES] = {
Thierry FOURNIER9c627e82015-06-03 20:12:35 +020043 [SMP_T_ANY] = "any",
Willy Tarreau1cf8f082014-02-07 12:14:54 +010044 [SMP_T_BOOL] = "bool",
Willy Tarreau1cf8f082014-02-07 12:14:54 +010045 [SMP_T_SINT] = "sint",
46 [SMP_T_ADDR] = "addr",
47 [SMP_T_IPV4] = "ipv4",
48 [SMP_T_IPV6] = "ipv6",
49 [SMP_T_STR] = "str",
50 [SMP_T_BIN] = "bin",
Thierry FOURNIER4c2479e2015-06-03 20:12:04 +020051 [SMP_T_METH] = "meth",
Willy Tarreau1cf8f082014-02-07 12:14:54 +010052};
53
Willy Tarreau12785782012-04-27 21:37:17 +020054/* static sample used in sample_process() when <p> is NULL */
Emeric Brune5c918b2017-06-14 14:15:36 +020055static THREAD_LOCAL struct sample temp_smp;
Emeric Brun107ca302010-01-04 16:16:05 +010056
Willy Tarreau12785782012-04-27 21:37:17 +020057/* list head of all known sample fetch keywords */
58static struct sample_fetch_kw_list sample_fetches = {
59 .list = LIST_HEAD_INIT(sample_fetches.list)
Emeric Brun107ca302010-01-04 16:16:05 +010060};
61
Willy Tarreau12785782012-04-27 21:37:17 +020062/* list head of all known sample format conversion keywords */
63static struct sample_conv_kw_list sample_convs = {
64 .list = LIST_HEAD_INIT(sample_convs.list)
Emeric Brun107ca302010-01-04 16:16:05 +010065};
66
Willy Tarreau80aca902013-01-07 15:42:20 +010067const unsigned int fetch_cap[SMP_SRC_ENTRIES] = {
68 [SMP_SRC_INTRN] = (SMP_VAL_FE_CON_ACC | SMP_VAL_FE_SES_ACC | SMP_VAL_FE_REQ_CNT |
69 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
70 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
71 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
72 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
73 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
74 SMP_VAL_FE_LOG_END),
75
76 [SMP_SRC_LISTN] = (SMP_VAL_FE_CON_ACC | SMP_VAL_FE_SES_ACC | SMP_VAL_FE_REQ_CNT |
77 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
78 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
79 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
80 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
81 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
82 SMP_VAL_FE_LOG_END),
83
84 [SMP_SRC_FTEND] = (SMP_VAL_FE_CON_ACC | SMP_VAL_FE_SES_ACC | SMP_VAL_FE_REQ_CNT |
85 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
86 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
87 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
88 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
89 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
90 SMP_VAL_FE_LOG_END),
91
92 [SMP_SRC_L4CLI] = (SMP_VAL_FE_CON_ACC | SMP_VAL_FE_SES_ACC | SMP_VAL_FE_REQ_CNT |
93 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
94 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
95 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
96 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
97 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
98 SMP_VAL_FE_LOG_END),
99
100 [SMP_SRC_L5CLI] = (SMP_VAL___________ | SMP_VAL_FE_SES_ACC | SMP_VAL_FE_REQ_CNT |
101 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
102 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
103 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
104 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
105 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
106 SMP_VAL_FE_LOG_END),
107
108 [SMP_SRC_TRACK] = (SMP_VAL_FE_CON_ACC | SMP_VAL_FE_SES_ACC | SMP_VAL_FE_REQ_CNT |
109 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
110 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
111 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
112 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
113 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
114 SMP_VAL_FE_LOG_END),
115
116 [SMP_SRC_L6REQ] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_FE_REQ_CNT |
117 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
118 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
119 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL___________ |
120 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
121 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
122 SMP_VAL___________),
123
124 [SMP_SRC_HRQHV] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_FE_REQ_CNT |
125 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
126 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
127 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL___________ |
128 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
129 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
130 SMP_VAL___________),
131
132 [SMP_SRC_HRQHP] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_FE_REQ_CNT |
133 SMP_VAL_FE_HRQ_HDR | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
134 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
135 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
136 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
137 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
138 SMP_VAL_FE_LOG_END),
139
140 [SMP_SRC_HRQBO] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
141 SMP_VAL___________ | SMP_VAL_FE_HRQ_BDY | SMP_VAL_FE_SET_BCK |
142 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
143 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL___________ |
144 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
145 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
146 SMP_VAL___________),
147
148 [SMP_SRC_BKEND] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
149 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
150 SMP_VAL_BE_REQ_CNT | SMP_VAL_BE_HRQ_HDR | SMP_VAL_BE_HRQ_BDY |
151 SMP_VAL_BE_SET_SRV | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
152 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
153 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
154 SMP_VAL_FE_LOG_END),
155
156 [SMP_SRC_SERVR] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
157 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
158 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
159 SMP_VAL___________ | SMP_VAL_BE_SRV_CON | SMP_VAL_BE_RES_CNT |
160 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
161 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
162 SMP_VAL_FE_LOG_END),
163
164 [SMP_SRC_L4SRV] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
165 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
166 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
167 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_BE_RES_CNT |
168 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
169 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
170 SMP_VAL_FE_LOG_END),
171
172 [SMP_SRC_L5SRV] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
173 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
174 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
175 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_BE_RES_CNT |
176 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
177 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
178 SMP_VAL_FE_LOG_END),
179
180 [SMP_SRC_L6RES] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
181 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
182 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
183 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_BE_RES_CNT |
184 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
185 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
186 SMP_VAL___________),
187
188 [SMP_SRC_HRSHV] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
189 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
190 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
191 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_BE_RES_CNT |
192 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
193 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
194 SMP_VAL___________),
195
196 [SMP_SRC_HRSHP] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
197 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
198 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
199 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL_BE_RES_CNT |
200 SMP_VAL_BE_HRS_HDR | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
201 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
202 SMP_VAL_FE_LOG_END),
203
204 [SMP_SRC_HRSBO] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
205 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
206 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
207 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
208 SMP_VAL___________ | SMP_VAL_BE_HRS_BDY | SMP_VAL_BE_STO_RUL |
209 SMP_VAL_FE_RES_CNT | SMP_VAL_FE_HRS_HDR | SMP_VAL_FE_HRS_BDY |
210 SMP_VAL___________),
211
212 [SMP_SRC_RQFIN] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
213 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
214 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
215 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
216 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
217 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
218 SMP_VAL_FE_LOG_END),
219
220 [SMP_SRC_RSFIN] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
221 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
222 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
223 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
224 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
225 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
226 SMP_VAL_FE_LOG_END),
227
228 [SMP_SRC_TXFIN] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
229 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
230 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
231 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
232 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
233 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
234 SMP_VAL_FE_LOG_END),
235
236 [SMP_SRC_SSFIN] = (SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
237 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
238 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
239 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
240 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
241 SMP_VAL___________ | SMP_VAL___________ | SMP_VAL___________ |
242 SMP_VAL_FE_LOG_END),
243};
244
245static const char *fetch_src_names[SMP_SRC_ENTRIES] = {
246 [SMP_SRC_INTRN] = "internal state",
247 [SMP_SRC_LISTN] = "listener",
248 [SMP_SRC_FTEND] = "frontend",
249 [SMP_SRC_L4CLI] = "client address",
250 [SMP_SRC_L5CLI] = "client-side connection",
251 [SMP_SRC_TRACK] = "track counters",
252 [SMP_SRC_L6REQ] = "request buffer",
253 [SMP_SRC_HRQHV] = "HTTP request headers",
254 [SMP_SRC_HRQHP] = "HTTP request",
255 [SMP_SRC_HRQBO] = "HTTP request body",
256 [SMP_SRC_BKEND] = "backend",
257 [SMP_SRC_SERVR] = "server",
258 [SMP_SRC_L4SRV] = "server address",
259 [SMP_SRC_L5SRV] = "server-side connection",
260 [SMP_SRC_L6RES] = "response buffer",
261 [SMP_SRC_HRSHV] = "HTTP response headers",
262 [SMP_SRC_HRSHP] = "HTTP response",
263 [SMP_SRC_HRSBO] = "HTTP response body",
264 [SMP_SRC_RQFIN] = "request buffer statistics",
265 [SMP_SRC_RSFIN] = "response buffer statistics",
266 [SMP_SRC_TXFIN] = "transaction statistics",
267 [SMP_SRC_SSFIN] = "session statistics",
268};
269
Willy Tarreaubf8e2512013-03-25 14:52:41 +0100270static const char *fetch_ckp_names[SMP_CKP_ENTRIES] = {
271 [SMP_CKP_FE_CON_ACC] = "frontend tcp-request connection rule",
272 [SMP_CKP_FE_SES_ACC] = "frontend tcp-request session rule",
273 [SMP_CKP_FE_REQ_CNT] = "frontend tcp-request content rule",
274 [SMP_CKP_FE_HRQ_HDR] = "frontend http-request header rule",
275 [SMP_CKP_FE_HRQ_BDY] = "frontend http-request body rule",
276 [SMP_CKP_FE_SET_BCK] = "frontend use-backend rule",
277 [SMP_CKP_BE_REQ_CNT] = "backend tcp-request content rule",
278 [SMP_CKP_BE_HRQ_HDR] = "backend http-request header rule",
279 [SMP_CKP_BE_HRQ_BDY] = "backend http-request body rule",
280 [SMP_CKP_BE_SET_SRV] = "backend use-server, balance or stick-match rule",
281 [SMP_CKP_BE_SRV_CON] = "server source selection",
282 [SMP_CKP_BE_RES_CNT] = "backend tcp-response content rule",
283 [SMP_CKP_BE_HRS_HDR] = "backend http-response header rule",
284 [SMP_CKP_BE_HRS_BDY] = "backend http-response body rule",
285 [SMP_CKP_BE_STO_RUL] = "backend stick-store rule",
286 [SMP_CKP_FE_RES_CNT] = "frontend tcp-response content rule",
287 [SMP_CKP_FE_HRS_HDR] = "frontend http-response header rule",
288 [SMP_CKP_FE_HRS_BDY] = "frontend http-response body rule",
289 [SMP_CKP_FE_LOG_END] = "logs",
290};
291
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100292/* This function returns the type of the data returned by the sample_expr.
293 * It assumes that the <expr> and all of its converters are properly
294 * initialized.
295 */
296inline
297int smp_expr_output_type(struct sample_expr *expr)
298{
299 struct sample_conv_expr *smp_expr;
300
301 if (!LIST_ISEMPTY(&expr->conv_exprs)) {
302 smp_expr = LIST_PREV(&expr->conv_exprs, struct sample_conv_expr *, list);
303 return smp_expr->conv->out_type;
304 }
305 return expr->fetch->out_type;
306}
307
308
Willy Tarreau80aca902013-01-07 15:42:20 +0100309/* fill the trash with a comma-delimited list of source names for the <use> bit
310 * field which must be composed of a non-null set of SMP_USE_* flags. The return
311 * value is the pointer to the string in the trash buffer.
312 */
313const char *sample_src_names(unsigned int use)
314{
315 int bit;
316
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200317 trash.data = 0;
318 trash.area[0] = '\0';
Willy Tarreau80aca902013-01-07 15:42:20 +0100319 for (bit = 0; bit < SMP_SRC_ENTRIES; bit++) {
320 if (!(use & ~((1 << bit) - 1)))
321 break; /* no more bits */
322
323 if (!(use & (1 << bit)))
324 continue; /* bit not set */
325
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200326 trash.data += snprintf(trash.area + trash.data,
327 trash.size - trash.data, "%s%s",
328 (use & ((1 << bit) - 1)) ? "," : "",
329 fetch_src_names[bit]);
Willy Tarreau80aca902013-01-07 15:42:20 +0100330 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200331 return trash.area;
Willy Tarreau80aca902013-01-07 15:42:20 +0100332}
333
Willy Tarreaubf8e2512013-03-25 14:52:41 +0100334/* return a pointer to the correct sample checkpoint name, or "unknown" when
335 * the flags are invalid. Only the lowest bit is used, higher bits are ignored
336 * if set.
337 */
338const char *sample_ckp_names(unsigned int use)
339{
340 int bit;
341
342 for (bit = 0; bit < SMP_CKP_ENTRIES; bit++)
343 if (use & (1 << bit))
344 return fetch_ckp_names[bit];
345 return "unknown sample check place, please report this bug";
346}
347
Emeric Brun107ca302010-01-04 16:16:05 +0100348/*
Willy Tarreau80aca902013-01-07 15:42:20 +0100349 * Registers the sample fetch keyword list <kwl> as a list of valid keywords
350 * for next parsing sessions. The fetch keywords capabilities are also computed
351 * from their ->use field.
Emeric Brun107ca302010-01-04 16:16:05 +0100352 */
Willy Tarreau80aca902013-01-07 15:42:20 +0100353void sample_register_fetches(struct sample_fetch_kw_list *kwl)
Emeric Brun107ca302010-01-04 16:16:05 +0100354{
Willy Tarreau80aca902013-01-07 15:42:20 +0100355 struct sample_fetch *sf;
356 int bit;
357
358 for (sf = kwl->kw; sf->kw != NULL; sf++) {
359 for (bit = 0; bit < SMP_SRC_ENTRIES; bit++)
360 if (sf->use & (1 << bit))
361 sf->val |= fetch_cap[bit];
362 }
363 LIST_ADDQ(&sample_fetches.list, &kwl->list);
Emeric Brun107ca302010-01-04 16:16:05 +0100364}
365
366/*
Willy Tarreau12785782012-04-27 21:37:17 +0200367 * Registers the sample format coverstion keyword list <pckl> as a list of valid keywords for next
Emeric Brun107ca302010-01-04 16:16:05 +0100368 * parsing sessions.
369 */
Willy Tarreau12785782012-04-27 21:37:17 +0200370void sample_register_convs(struct sample_conv_kw_list *pckl)
Emeric Brun107ca302010-01-04 16:16:05 +0100371{
Willy Tarreau12785782012-04-27 21:37:17 +0200372 LIST_ADDQ(&sample_convs.list, &pckl->list);
Emeric Brun107ca302010-01-04 16:16:05 +0100373}
374
375/*
Willy Tarreau12785782012-04-27 21:37:17 +0200376 * Returns the pointer on sample fetch keyword structure identified by
Emeric Brun107ca302010-01-04 16:16:05 +0100377 * string of <len> in buffer <kw>.
378 *
379 */
Willy Tarreau12785782012-04-27 21:37:17 +0200380struct sample_fetch *find_sample_fetch(const char *kw, int len)
Emeric Brun107ca302010-01-04 16:16:05 +0100381{
382 int index;
Willy Tarreau12785782012-04-27 21:37:17 +0200383 struct sample_fetch_kw_list *kwl;
Emeric Brun107ca302010-01-04 16:16:05 +0100384
Willy Tarreau12785782012-04-27 21:37:17 +0200385 list_for_each_entry(kwl, &sample_fetches.list, list) {
Emeric Brun107ca302010-01-04 16:16:05 +0100386 for (index = 0; kwl->kw[index].kw != NULL; index++) {
387 if (strncmp(kwl->kw[index].kw, kw, len) == 0 &&
388 kwl->kw[index].kw[len] == '\0')
389 return &kwl->kw[index];
390 }
391 }
392 return NULL;
393}
394
Tim Duesterhusc555ee02018-01-25 16:24:44 +0100395/* This function browses the list of available sample fetches. <current> is
Thierry FOURNIER4d9a1d12014-12-08 14:49:19 +0100396 * the last used sample fetch. If it is the first call, it must set to NULL.
Tim Duesterhusc555ee02018-01-25 16:24:44 +0100397 * <idx> is the index of the next sample fetch entry. It is used as private
398 * value. It is useless to initiate it.
Thierry FOURNIER4d9a1d12014-12-08 14:49:19 +0100399 *
Tim Duesterhusc555ee02018-01-25 16:24:44 +0100400 * It returns always the new fetch_sample entry, and NULL when the end of
Thierry FOURNIER4d9a1d12014-12-08 14:49:19 +0100401 * the list is reached.
402 */
403struct sample_fetch *sample_fetch_getnext(struct sample_fetch *current, int *idx)
404{
405 struct sample_fetch_kw_list *kwl;
406 struct sample_fetch *base;
407
408 if (!current) {
409 /* Get first kwl entry. */
410 kwl = LIST_NEXT(&sample_fetches.list, struct sample_fetch_kw_list *, list);
411 (*idx) = 0;
412 } else {
413 /* Get kwl corresponding to the curret entry. */
414 base = current + 1 - (*idx);
415 kwl = container_of(base, struct sample_fetch_kw_list, kw);
416 }
417
418 while (1) {
419
420 /* Check if kwl is the last entry. */
421 if (&kwl->list == &sample_fetches.list)
422 return NULL;
423
424 /* idx contain the next keyword. If it is available, return it. */
425 if (kwl->kw[*idx].kw) {
426 (*idx)++;
427 return &kwl->kw[(*idx)-1];
428 }
429
430 /* get next entry in the main list, and return NULL if the end is reached. */
431 kwl = LIST_NEXT(&kwl->list, struct sample_fetch_kw_list *, list);
432
433 /* Set index to 0, ans do one other loop. */
434 (*idx) = 0;
435 }
436}
437
Thierry FOURNIER8fd13762015-03-10 23:56:48 +0100438/* This function browses the list of available converters. <current> is
439 * the last used converter. If it is the first call, it must set to NULL.
440 * <idx> is the index of the next converter entry. It is used as private
441 * value. It is useless to initiate it.
442 *
443 * It returns always the next sample_conv entry, and NULL when the end of
444 * the list is reached.
445 */
446struct sample_conv *sample_conv_getnext(struct sample_conv *current, int *idx)
447{
448 struct sample_conv_kw_list *kwl;
449 struct sample_conv *base;
450
451 if (!current) {
452 /* Get first kwl entry. */
453 kwl = LIST_NEXT(&sample_convs.list, struct sample_conv_kw_list *, list);
454 (*idx) = 0;
455 } else {
456 /* Get kwl corresponding to the curret entry. */
457 base = current + 1 - (*idx);
458 kwl = container_of(base, struct sample_conv_kw_list, kw);
459 }
460
461 while (1) {
462 /* Check if kwl is the last entry. */
463 if (&kwl->list == &sample_convs.list)
464 return NULL;
465
466 /* idx contain the next keyword. If it is available, return it. */
467 if (kwl->kw[*idx].kw) {
468 (*idx)++;
469 return &kwl->kw[(*idx)-1];
470 }
471
472 /* get next entry in the main list, and return NULL if the end is reached. */
473 kwl = LIST_NEXT(&kwl->list, struct sample_conv_kw_list *, list);
474
475 /* Set index to 0, ans do one other loop. */
476 (*idx) = 0;
477 }
478}
479
Emeric Brun107ca302010-01-04 16:16:05 +0100480/*
Willy Tarreau12785782012-04-27 21:37:17 +0200481 * Returns the pointer on sample format conversion keyword structure identified by
Emeric Brun107ca302010-01-04 16:16:05 +0100482 * string of <len> in buffer <kw>.
483 *
484 */
Willy Tarreau12785782012-04-27 21:37:17 +0200485struct sample_conv *find_sample_conv(const char *kw, int len)
Emeric Brun107ca302010-01-04 16:16:05 +0100486{
487 int index;
Willy Tarreau12785782012-04-27 21:37:17 +0200488 struct sample_conv_kw_list *kwl;
Emeric Brun107ca302010-01-04 16:16:05 +0100489
Willy Tarreau12785782012-04-27 21:37:17 +0200490 list_for_each_entry(kwl, &sample_convs.list, list) {
Emeric Brun107ca302010-01-04 16:16:05 +0100491 for (index = 0; kwl->kw[index].kw != NULL; index++) {
492 if (strncmp(kwl->kw[index].kw, kw, len) == 0 &&
493 kwl->kw[index].kw[len] == '\0')
494 return &kwl->kw[index];
495 }
496 }
497 return NULL;
498}
499
Emeric Brun107ca302010-01-04 16:16:05 +0100500/******************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200501/* Sample casts functions */
Emeric Brun107ca302010-01-04 16:16:05 +0100502/******************************************************************/
503
Willy Tarreau342acb42012-04-23 22:03:39 +0200504static int c_ip2int(struct sample *smp)
Emeric Brun107ca302010-01-04 16:16:05 +0100505{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200506 smp->data.u.sint = ntohl(smp->data.u.ipv4.s_addr);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200507 smp->data.type = SMP_T_SINT;
Emeric Brun107ca302010-01-04 16:16:05 +0100508 return 1;
509}
510
Willy Tarreau342acb42012-04-23 22:03:39 +0200511static int c_ip2str(struct sample *smp)
Emeric Brun107ca302010-01-04 16:16:05 +0100512{
Willy Tarreau83061a82018-07-13 11:56:34 +0200513 struct buffer *trash = get_trash_chunk();
Emeric Brun107ca302010-01-04 16:16:05 +0100514
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200515 if (!inet_ntop(AF_INET, (void *)&smp->data.u.ipv4, trash->area, trash->size))
Emeric Brun107ca302010-01-04 16:16:05 +0100516 return 0;
517
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200518 trash->data = strlen(trash->area);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200519 smp->data.u.str = *trash;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200520 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100521 smp->flags &= ~SMP_F_CONST;
Emeric Brun107ca302010-01-04 16:16:05 +0100522
523 return 1;
524}
525
Willy Tarreau342acb42012-04-23 22:03:39 +0200526static int c_ip2ipv6(struct sample *smp)
David du Colombier4f92d322011-03-24 11:09:31 +0100527{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200528 v4tov6(&smp->data.u.ipv6, &smp->data.u.ipv4);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200529 smp->data.type = SMP_T_IPV6;
David du Colombier4f92d322011-03-24 11:09:31 +0100530 return 1;
531}
532
Thierry FOURNIERcc4d1712015-07-24 09:04:56 +0200533static int c_ipv62ip(struct sample *smp)
534{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200535 if (!v6tov4(&smp->data.u.ipv4, &smp->data.u.ipv6))
Thierry FOURNIERcc4d1712015-07-24 09:04:56 +0200536 return 0;
Tim Duesterhusbf5ce022018-01-25 16:24:46 +0100537 smp->data.type = SMP_T_IPV4;
Thierry FOURNIERcc4d1712015-07-24 09:04:56 +0200538 return 1;
539}
540
Willy Tarreau342acb42012-04-23 22:03:39 +0200541static int c_ipv62str(struct sample *smp)
David du Colombier4f92d322011-03-24 11:09:31 +0100542{
Willy Tarreau83061a82018-07-13 11:56:34 +0200543 struct buffer *trash = get_trash_chunk();
David du Colombier4f92d322011-03-24 11:09:31 +0100544
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200545 if (!inet_ntop(AF_INET6, (void *)&smp->data.u.ipv6, trash->area, trash->size))
David du Colombier4f92d322011-03-24 11:09:31 +0100546 return 0;
547
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200548 trash->data = strlen(trash->area);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200549 smp->data.u.str = *trash;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200550 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100551 smp->flags &= ~SMP_F_CONST;
David du Colombier4f92d322011-03-24 11:09:31 +0100552 return 1;
553}
554
555/*
Willy Tarreau342acb42012-04-23 22:03:39 +0200556static int c_ipv62ip(struct sample *smp)
David du Colombier4f92d322011-03-24 11:09:31 +0100557{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200558 return v6tov4(&smp->data.u.ipv4, &smp->data.u.ipv6);
David du Colombier4f92d322011-03-24 11:09:31 +0100559}
560*/
561
Willy Tarreau342acb42012-04-23 22:03:39 +0200562static int c_int2ip(struct sample *smp)
Emeric Brun107ca302010-01-04 16:16:05 +0100563{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200564 smp->data.u.ipv4.s_addr = htonl((unsigned int)smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200565 smp->data.type = SMP_T_IPV4;
Emeric Brun107ca302010-01-04 16:16:05 +0100566 return 1;
567}
568
Thierry FOURNIERcc4d1712015-07-24 09:04:56 +0200569static int c_int2ipv6(struct sample *smp)
570{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200571 smp->data.u.ipv4.s_addr = htonl((unsigned int)smp->data.u.sint);
572 v4tov6(&smp->data.u.ipv6, &smp->data.u.ipv4);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200573 smp->data.type = SMP_T_IPV6;
Thierry FOURNIERcc4d1712015-07-24 09:04:56 +0200574 return 1;
575}
576
Thierry FOURNIERb805f712013-11-26 20:47:54 +0100577static int c_str2addr(struct sample *smp)
578{
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200579 if (!buf2ip(smp->data.u.str.area, smp->data.u.str.data, &smp->data.u.ipv4)) {
580 if (!buf2ip6(smp->data.u.str.area, smp->data.u.str.data, &smp->data.u.ipv6))
Thierry FOURNIERfd139902013-12-11 12:38:57 +0100581 return 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200582 smp->data.type = SMP_T_IPV6;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100583 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIERfd139902013-12-11 12:38:57 +0100584 return 1;
Thierry FOURNIERb805f712013-11-26 20:47:54 +0100585 }
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200586 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100587 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIERb805f712013-11-26 20:47:54 +0100588 return 1;
589}
590
Willy Tarreau342acb42012-04-23 22:03:39 +0200591static int c_str2ip(struct sample *smp)
Emeric Brun107ca302010-01-04 16:16:05 +0100592{
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200593 if (!buf2ip(smp->data.u.str.area, smp->data.u.str.data, &smp->data.u.ipv4))
Emeric Brun107ca302010-01-04 16:16:05 +0100594 return 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200595 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100596 smp->flags &= ~SMP_F_CONST;
Emeric Brun107ca302010-01-04 16:16:05 +0100597 return 1;
598}
599
Willy Tarreau342acb42012-04-23 22:03:39 +0200600static int c_str2ipv6(struct sample *smp)
David du Colombier4f92d322011-03-24 11:09:31 +0100601{
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200602 if (!buf2ip6(smp->data.u.str.area, smp->data.u.str.data, &smp->data.u.ipv6))
Thierry FOURNIERfd139902013-12-11 12:38:57 +0100603 return 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200604 smp->data.type = SMP_T_IPV6;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100605 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIERfd139902013-12-11 12:38:57 +0100606 return 1;
David du Colombier4f92d322011-03-24 11:09:31 +0100607}
608
Emeric Brun4b9e8022014-11-03 18:17:10 +0100609/*
610 * The NULL char always enforces the end of string if it is met.
611 * Data is never changed, so we can ignore the CONST case
Thierry FOURNIERe87cac12014-03-12 15:07:59 +0100612 */
Emeric Brun8ac33d92012-10-17 13:36:06 +0200613static int c_bin2str(struct sample *smp)
614{
Emeric Brun4b9e8022014-11-03 18:17:10 +0100615 int i;
Emeric Brun8ac33d92012-10-17 13:36:06 +0200616
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200617 for (i = 0; i < smp->data.u.str.data; i++) {
618 if (!smp->data.u.str.area[i]) {
619 smp->data.u.str.data = i;
Thierry FOURNIERe87cac12014-03-12 15:07:59 +0100620 break;
Emeric Brun4b9e8022014-11-03 18:17:10 +0100621 }
Emeric Brun8ac33d92012-10-17 13:36:06 +0200622 }
Emeric Brun8ac33d92012-10-17 13:36:06 +0200623 return 1;
624}
625
Willy Tarreau342acb42012-04-23 22:03:39 +0200626static int c_int2str(struct sample *smp)
Emeric Brun107ca302010-01-04 16:16:05 +0100627{
Willy Tarreau83061a82018-07-13 11:56:34 +0200628 struct buffer *trash = get_trash_chunk();
Emeric Brun107ca302010-01-04 16:16:05 +0100629 char *pos;
630
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200631 pos = lltoa_r(smp->data.u.sint, trash->area, trash->size);
Emeric Brun107ca302010-01-04 16:16:05 +0100632 if (!pos)
633 return 0;
634
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200635 trash->size = trash->size - (pos - trash->area);
636 trash->area = pos;
637 trash->data = strlen(pos);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200638 smp->data.u.str = *trash;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200639 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100640 smp->flags &= ~SMP_F_CONST;
Emeric Brun107ca302010-01-04 16:16:05 +0100641 return 1;
642}
643
Joseph Herlant757f5ad2018-11-15 12:14:56 -0800644/* This function unconditionally duplicates data and removes the "const" flag.
Willy Tarreauad635822016-08-08 19:21:09 +0200645 * For strings and binary blocks, it also provides a known allocated size with
646 * a length that is capped to the size, and ensures a trailing zero is always
647 * appended for strings. This is necessary for some operations which may
648 * require to extend the length. It returns 0 if it fails, 1 on success.
649 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100650int smp_dup(struct sample *smp)
Emeric Brun485479d2010-09-23 18:02:19 +0200651{
Willy Tarreau83061a82018-07-13 11:56:34 +0200652 struct buffer *trash;
Emeric Brun485479d2010-09-23 18:02:19 +0200653
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200654 switch (smp->data.type) {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100655 case SMP_T_BOOL:
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100656 case SMP_T_SINT:
657 case SMP_T_ADDR:
658 case SMP_T_IPV4:
659 case SMP_T_IPV6:
660 /* These type are not const. */
661 break;
Willy Tarreauad635822016-08-08 19:21:09 +0200662
Christopher Fauletec100512017-07-24 15:38:41 +0200663 case SMP_T_METH:
664 if (smp->data.u.meth.meth != HTTP_METH_OTHER)
665 break;
666 /* Fall through */
667
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100668 case SMP_T_STR:
Willy Tarreauad635822016-08-08 19:21:09 +0200669 trash = get_trash_chunk();
Olivier Houchard4468f1c2018-12-07 15:23:41 +0100670 trash->data = smp->data.type == SMP_T_STR ?
671 smp->data.u.str.data : smp->data.u.meth.str.data;
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200672 if (trash->data > trash->size - 1)
673 trash->data = trash->size - 1;
Willy Tarreauad635822016-08-08 19:21:09 +0200674
Olivier Houchard4468f1c2018-12-07 15:23:41 +0100675 memcpy(trash->area, smp->data.type == SMP_T_STR ?
676 smp->data.u.str.area : smp->data.u.meth.str.area,
677 trash->data);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200678 trash->area[trash->data] = 0;
Willy Tarreauad635822016-08-08 19:21:09 +0200679 smp->data.u.str = *trash;
680 break;
681
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100682 case SMP_T_BIN:
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100683 trash = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200684 trash->data = smp->data.u.str.data;
685 if (trash->data > trash->size)
686 trash->data = trash->size;
Willy Tarreauad635822016-08-08 19:21:09 +0200687
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200688 memcpy(trash->area, smp->data.u.str.area, trash->data);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200689 smp->data.u.str = *trash;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100690 break;
Christopher Fauletec100512017-07-24 15:38:41 +0200691
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100692 default:
693 /* Other cases are unexpected. */
694 return 0;
695 }
Thierry FOURNIERb805f712013-11-26 20:47:54 +0100696
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100697 /* remove const flag */
698 smp->flags &= ~SMP_F_CONST;
Emeric Brun485479d2010-09-23 18:02:19 +0200699 return 1;
700}
701
Thierry FOURNIER0e9af552013-12-14 14:55:04 +0100702int c_none(struct sample *smp)
Emeric Brun107ca302010-01-04 16:16:05 +0100703{
704 return 1;
705}
706
Willy Tarreau342acb42012-04-23 22:03:39 +0200707static int c_str2int(struct sample *smp)
Emeric Brun107ca302010-01-04 16:16:05 +0100708{
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200709 const char *str;
710 const char *end;
Emeric Brun107ca302010-01-04 16:16:05 +0100711
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200712 if (smp->data.u.str.data == 0)
Thierry FOURNIER60bb0202014-01-27 18:20:48 +0100713 return 0;
714
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200715 str = smp->data.u.str.area;
716 end = smp->data.u.str.area + smp->data.u.str.data;
Emeric Brun107ca302010-01-04 16:16:05 +0100717
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200718 smp->data.u.sint = read_int64(&str, end);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200719 smp->data.type = SMP_T_SINT;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100720 smp->flags &= ~SMP_F_CONST;
Emeric Brun107ca302010-01-04 16:16:05 +0100721 return 1;
722}
723
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100724static int c_str2meth(struct sample *smp)
725{
726 enum http_meth_t meth;
727 int len;
728
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200729 meth = find_http_meth(smp->data.u.str.area, smp->data.u.str.data);
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100730 if (meth == HTTP_METH_OTHER) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200731 len = smp->data.u.str.data;
732 smp->data.u.meth.str.area = smp->data.u.str.area;
733 smp->data.u.meth.str.data = len;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100734 }
735 else
736 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200737 smp->data.u.meth.meth = meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200738 smp->data.type = SMP_T_METH;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100739 return 1;
740}
741
742static int c_meth2str(struct sample *smp)
743{
744 int len;
745 enum http_meth_t meth;
746
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200747 if (smp->data.u.meth.meth == HTTP_METH_OTHER) {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100748 /* The method is unknown. Copy the original pointer. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200749 len = smp->data.u.meth.str.data;
750 smp->data.u.str.area = smp->data.u.meth.str.area;
751 smp->data.u.str.data = len;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200752 smp->data.type = SMP_T_STR;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100753 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200754 else if (smp->data.u.meth.meth < HTTP_METH_OTHER) {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100755 /* The method is known, copy the pointer containing the string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200756 meth = smp->data.u.meth.meth;
Willy Tarreau35b51c62018-09-10 15:38:55 +0200757 smp->data.u.str.area = http_known_methods[meth].ptr;
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200758 smp->data.u.str.data = http_known_methods[meth].len;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100759 smp->flags |= SMP_F_CONST;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200760 smp->data.type = SMP_T_STR;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100761 }
762 else {
763 /* Unknown method */
764 return 0;
765 }
766 return 1;
767}
768
Willy Tarreau9700e5c2014-07-15 21:03:26 +0200769static int c_addr2bin(struct sample *smp)
770{
Willy Tarreau83061a82018-07-13 11:56:34 +0200771 struct buffer *chk = get_trash_chunk();
Willy Tarreau9700e5c2014-07-15 21:03:26 +0200772
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200773 if (smp->data.type == SMP_T_IPV4) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200774 chk->data = 4;
775 memcpy(chk->area, &smp->data.u.ipv4, chk->data);
Willy Tarreau9700e5c2014-07-15 21:03:26 +0200776 }
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200777 else if (smp->data.type == SMP_T_IPV6) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200778 chk->data = 16;
779 memcpy(chk->area, &smp->data.u.ipv6, chk->data);
Willy Tarreau9700e5c2014-07-15 21:03:26 +0200780 }
781 else
782 return 0;
783
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200784 smp->data.u.str = *chk;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200785 smp->data.type = SMP_T_BIN;
Willy Tarreau9700e5c2014-07-15 21:03:26 +0200786 return 1;
787}
788
Willy Tarreaubbfd1a22014-07-15 21:19:08 +0200789static int c_int2bin(struct sample *smp)
790{
Willy Tarreau83061a82018-07-13 11:56:34 +0200791 struct buffer *chk = get_trash_chunk();
Willy Tarreaubbfd1a22014-07-15 21:19:08 +0200792
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200793 *(unsigned long long int *) chk->area = my_htonll(smp->data.u.sint);
794 chk->data = 8;
Willy Tarreaubbfd1a22014-07-15 21:19:08 +0200795
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200796 smp->data.u.str = *chk;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200797 smp->data.type = SMP_T_BIN;
Willy Tarreaubbfd1a22014-07-15 21:19:08 +0200798 return 1;
799}
800
Willy Tarreau9700e5c2014-07-15 21:03:26 +0200801
Emeric Brun107ca302010-01-04 16:16:05 +0100802/*****************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200803/* Sample casts matrix: */
804/* sample_casts[from type][to type] */
805/* NULL pointer used for impossible sample casts */
Emeric Brun107ca302010-01-04 16:16:05 +0100806/*****************************************************************/
Emeric Brun107ca302010-01-04 16:16:05 +0100807
Thierry FOURNIER8af6ff12013-11-21 10:53:12 +0100808sample_cast_fct sample_casts[SMP_TYPES][SMP_TYPES] = {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200809/* to: ANY BOOL SINT ADDR IPV4 IPV6 STR BIN METH */
810/* from: ANY */ { c_none, c_none, c_none, c_none, c_none, c_none, c_none, c_none, c_none, },
811/* BOOL */ { c_none, c_none, c_none, NULL, NULL, NULL, c_int2str, NULL, NULL, },
Thierry FOURNIERcc4d1712015-07-24 09:04:56 +0200812/* SINT */ { c_none, c_none, c_none, c_int2ip, c_int2ip, c_int2ipv6, c_int2str, c_int2bin, NULL, },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200813/* ADDR */ { c_none, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, },
814/* IPV4 */ { c_none, NULL, c_ip2int, c_none, c_none, c_ip2ipv6, c_ip2str, c_addr2bin, NULL, },
Thierry FOURNIERcc4d1712015-07-24 09:04:56 +0200815/* IPV6 */ { c_none, NULL, NULL, c_none, c_ipv62ip,c_none, c_ipv62str, c_addr2bin, NULL, },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200816/* STR */ { c_none, c_str2int, c_str2int, c_str2addr, c_str2ip, c_str2ipv6, c_none, c_none, c_str2meth, },
817/* BIN */ { c_none, NULL, NULL, NULL, NULL, NULL, c_bin2str, c_none, c_str2meth, },
818/* METH */ { c_none, NULL, NULL, NULL, NULL, NULL, c_meth2str, c_meth2str, c_none, }
Willy Tarreauf0b38bf2010-06-06 13:22:23 +0200819};
Emeric Brun107ca302010-01-04 16:16:05 +0100820
Emeric Brun107ca302010-01-04 16:16:05 +0100821/*
Willy Tarreau12785782012-04-27 21:37:17 +0200822 * Parse a sample expression configuration:
Emeric Brun107ca302010-01-04 16:16:05 +0100823 * fetch keyword followed by format conversion keywords.
Willy Tarreau12785782012-04-27 21:37:17 +0200824 * Returns a pointer on allocated sample expression structure.
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200825 * The caller must have set al->ctx.
Emeric Brun107ca302010-01-04 16:16:05 +0100826 */
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100827struct sample_expr *sample_parse_expr(char **str, int *idx, const char *file, int line, char **err_msg, struct arg_list *al)
Emeric Brun107ca302010-01-04 16:16:05 +0100828{
Willy Tarreau833cc792013-07-24 15:34:19 +0200829 const char *begw; /* beginning of word */
830 const char *endw; /* end of word */
831 const char *endt; /* end of term */
Willy Tarreau12785782012-04-27 21:37:17 +0200832 struct sample_expr *expr;
833 struct sample_fetch *fetch;
834 struct sample_conv *conv;
Emeric Brun107ca302010-01-04 16:16:05 +0100835 unsigned long prev_type;
Willy Tarreau833cc792013-07-24 15:34:19 +0200836 char *fkw = NULL;
837 char *ckw = NULL;
Willy Tarreau689a1df2013-12-13 00:40:11 +0100838 int err_arg;
Emeric Brun107ca302010-01-04 16:16:05 +0100839
Willy Tarreau833cc792013-07-24 15:34:19 +0200840 begw = str[*idx];
841 for (endw = begw; *endw && *endw != '(' && *endw != ','; endw++);
842
843 if (endw == begw) {
Willy Tarreau975c1782013-12-12 23:16:54 +0100844 memprintf(err_msg, "missing fetch method");
Emeric Brun107ca302010-01-04 16:16:05 +0100845 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200846 }
Emeric Brun107ca302010-01-04 16:16:05 +0100847
Willy Tarreau833cc792013-07-24 15:34:19 +0200848 /* keep a copy of the current fetch keyword for error reporting */
849 fkw = my_strndup(begw, endw - begw);
Emeric Brun107ca302010-01-04 16:16:05 +0100850
Willy Tarreau833cc792013-07-24 15:34:19 +0200851 fetch = find_sample_fetch(begw, endw - begw);
852 if (!fetch) {
Willy Tarreau975c1782013-12-12 23:16:54 +0100853 memprintf(err_msg, "unknown fetch method '%s'", fkw);
Emeric Brun107ca302010-01-04 16:16:05 +0100854 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200855 }
Emeric Brun107ca302010-01-04 16:16:05 +0100856
Willy Tarreau833cc792013-07-24 15:34:19 +0200857 endt = endw;
858 if (*endt == '(') {
Willy Tarreau689a1df2013-12-13 00:40:11 +0100859 /* look for the end of this term and skip the opening parenthesis */
860 endt = ++endw;
Willy Tarreau833cc792013-07-24 15:34:19 +0200861 while (*endt && *endt != ')')
862 endt++;
863 if (*endt != ')') {
Willy Tarreau975c1782013-12-12 23:16:54 +0100864 memprintf(err_msg, "missing closing ')' after arguments to fetch keyword '%s'", fkw);
Willy Tarreau833cc792013-07-24 15:34:19 +0200865 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200866 }
Emeric Brun485479d2010-09-23 18:02:19 +0200867 }
Emeric Brun107ca302010-01-04 16:16:05 +0100868
Willy Tarreau833cc792013-07-24 15:34:19 +0200869 /* At this point, we have :
870 * - begw : beginning of the keyword
Willy Tarreau689a1df2013-12-13 00:40:11 +0100871 * - endw : end of the keyword, first character not part of keyword
872 * nor the opening parenthesis (so first character of args
873 * if present).
Willy Tarreau833cc792013-07-24 15:34:19 +0200874 * - endt : end of the term (=endw or last parenthesis if args are present)
875 */
876
877 if (fetch->out_type >= SMP_TYPES) {
Willy Tarreau975c1782013-12-12 23:16:54 +0100878 memprintf(err_msg, "returns type of fetch method '%s' is unknown", fkw);
Emeric Brun107ca302010-01-04 16:16:05 +0100879 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200880 }
Emeric Brun107ca302010-01-04 16:16:05 +0100881 prev_type = fetch->out_type;
Willy Tarreau833cc792013-07-24 15:34:19 +0200882
Vincent Bernat02779b62016-04-03 13:48:43 +0200883 expr = calloc(1, sizeof(*expr));
Emeric Brun485479d2010-09-23 18:02:19 +0200884 if (!expr)
885 goto out_error;
Emeric Brun107ca302010-01-04 16:16:05 +0100886
887 LIST_INIT(&(expr->conv_exprs));
888 expr->fetch = fetch;
Willy Tarreau2e845be2012-10-19 19:49:09 +0200889 expr->arg_p = empty_arg_list;
Emeric Brun107ca302010-01-04 16:16:05 +0100890
Willy Tarreau689a1df2013-12-13 00:40:11 +0100891 /* Note that we call the argument parser even with an empty string,
892 * this allows it to automatically create entries for mandatory
893 * implicit arguments (eg: local proxy name).
894 */
895 al->kw = expr->fetch->kw;
896 al->conv = NULL;
897 if (make_arg_list(endw, endt - endw, fetch->arg_mask, &expr->arg_p, err_msg, NULL, &err_arg, al) < 0) {
898 memprintf(err_msg, "fetch method '%s' : %s", fkw, *err_msg);
899 goto out_error;
900 }
Willy Tarreau2e845be2012-10-19 19:49:09 +0200901
Willy Tarreau689a1df2013-12-13 00:40:11 +0100902 if (!expr->arg_p) {
903 expr->arg_p = empty_arg_list;
Emeric Brun485479d2010-09-23 18:02:19 +0200904 }
Willy Tarreau689a1df2013-12-13 00:40:11 +0100905 else if (fetch->val_args && !fetch->val_args(expr->arg_p, err_msg)) {
906 memprintf(err_msg, "invalid args in fetch method '%s' : %s", fkw, *err_msg);
Emeric Brun485479d2010-09-23 18:02:19 +0200907 goto out_error;
Emeric Brun107ca302010-01-04 16:16:05 +0100908 }
909
Willy Tarreau833cc792013-07-24 15:34:19 +0200910 /* Now process the converters if any. We have two supported syntaxes
911 * for the converters, which can be combined :
912 * - comma-delimited list of converters just after the keyword and args ;
913 * - one converter per keyword
914 * The combination allows to have each keyword being a comma-delimited
915 * series of converters.
916 *
917 * We want to process the former first, then the latter. For this we start
918 * from the beginning of the supposed place in the exiting conv chain, which
919 * starts at the last comma (endt).
920 */
921
922 while (1) {
Willy Tarreau12785782012-04-27 21:37:17 +0200923 struct sample_conv_expr *conv_expr;
Emeric Brun107ca302010-01-04 16:16:05 +0100924
Willy Tarreau833cc792013-07-24 15:34:19 +0200925 if (*endt == ')') /* skip last closing parenthesis */
926 endt++;
Emeric Brun107ca302010-01-04 16:16:05 +0100927
Willy Tarreau833cc792013-07-24 15:34:19 +0200928 if (*endt && *endt != ',') {
929 if (ckw)
Willy Tarreau97108e02016-11-25 07:33:24 +0100930 memprintf(err_msg, "missing comma after converter '%s'", ckw);
Willy Tarreau833cc792013-07-24 15:34:19 +0200931 else
Willy Tarreau975c1782013-12-12 23:16:54 +0100932 memprintf(err_msg, "missing comma after fetch keyword '%s'", fkw);
Emeric Brun107ca302010-01-04 16:16:05 +0100933 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200934 }
Emeric Brun107ca302010-01-04 16:16:05 +0100935
Willy Tarreau833cc792013-07-24 15:34:19 +0200936 while (*endt == ',') /* then trailing commas */
937 endt++;
938
Willy Tarreau97108e02016-11-25 07:33:24 +0100939 begw = endt; /* start of converter */
Willy Tarreau833cc792013-07-24 15:34:19 +0200940
941 if (!*begw) {
942 /* none ? skip to next string */
943 (*idx)++;
944 begw = str[*idx];
945 if (!begw || !*begw)
946 break;
947 }
948
949 for (endw = begw; *endw && *endw != '(' && *endw != ','; endw++);
950
951 free(ckw);
952 ckw = my_strndup(begw, endw - begw);
953
954 conv = find_sample_conv(begw, endw - begw);
955 if (!conv) {
956 /* we found an isolated keyword that we don't know, it's not ours */
957 if (begw == str[*idx])
958 break;
Willy Tarreau97108e02016-11-25 07:33:24 +0100959 memprintf(err_msg, "unknown converter '%s'", ckw);
Willy Tarreau833cc792013-07-24 15:34:19 +0200960 goto out_error;
961 }
Emeric Brun107ca302010-01-04 16:16:05 +0100962
Willy Tarreau833cc792013-07-24 15:34:19 +0200963 endt = endw;
964 if (*endt == '(') {
965 /* look for the end of this term */
966 while (*endt && *endt != ')')
967 endt++;
968 if (*endt != ')') {
Willy Tarreau97108e02016-11-25 07:33:24 +0100969 memprintf(err_msg, "syntax error: missing ')' after converter '%s'", ckw);
Willy Tarreau833cc792013-07-24 15:34:19 +0200970 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200971 }
Willy Tarreau833cc792013-07-24 15:34:19 +0200972 }
973
974 if (conv->in_type >= SMP_TYPES || conv->out_type >= SMP_TYPES) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100975 memprintf(err_msg, "returns type of converter '%s' is unknown", ckw);
Emeric Brun107ca302010-01-04 16:16:05 +0100976 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200977 }
Emeric Brun107ca302010-01-04 16:16:05 +0100978
979 /* If impossible type conversion */
Willy Tarreau12785782012-04-27 21:37:17 +0200980 if (!sample_casts[prev_type][conv->in_type]) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100981 memprintf(err_msg, "converter '%s' cannot be applied", ckw);
Emeric Brun107ca302010-01-04 16:16:05 +0100982 goto out_error;
Emeric Brun485479d2010-09-23 18:02:19 +0200983 }
Emeric Brun107ca302010-01-04 16:16:05 +0100984
985 prev_type = conv->out_type;
Vincent Bernat02779b62016-04-03 13:48:43 +0200986 conv_expr = calloc(1, sizeof(*conv_expr));
Emeric Brun485479d2010-09-23 18:02:19 +0200987 if (!conv_expr)
988 goto out_error;
Emeric Brun107ca302010-01-04 16:16:05 +0100989
990 LIST_ADDQ(&(expr->conv_exprs), &(conv_expr->list));
991 conv_expr->conv = conv;
992
Willy Tarreau833cc792013-07-24 15:34:19 +0200993 if (endt != endw) {
Willy Tarreaub27c0d32012-04-20 16:04:47 +0200994 int err_arg;
Willy Tarreau21d68a62012-04-20 15:52:36 +0200995
Willy Tarreau9fcb9842012-04-20 14:45:49 +0200996 if (!conv->arg_mask) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100997 memprintf(err_msg, "converter '%s' does not support any args", ckw);
Emeric Brun485479d2010-09-23 18:02:19 +0200998 goto out_error;
999 }
Willy Tarreau9e92d322010-01-26 17:58:06 +01001000
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001001 al->kw = expr->fetch->kw;
1002 al->conv = conv_expr->conv->kw;
Willy Tarreau975c1782013-12-12 23:16:54 +01001003 if (make_arg_list(endw + 1, endt - endw - 1, conv->arg_mask, &conv_expr->arg_p, err_msg, NULL, &err_arg, al) < 0) {
Willy Tarreau97108e02016-11-25 07:33:24 +01001004 memprintf(err_msg, "invalid arg %d in converter '%s' : %s", err_arg+1, ckw, *err_msg);
Willy Tarreau21d68a62012-04-20 15:52:36 +02001005 goto out_error;
1006 }
1007
Willy Tarreau2e845be2012-10-19 19:49:09 +02001008 if (!conv_expr->arg_p)
1009 conv_expr->arg_p = empty_arg_list;
1010
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +01001011 if (conv->val_args && !conv->val_args(conv_expr->arg_p, conv, file, line, err_msg)) {
Willy Tarreau97108e02016-11-25 07:33:24 +01001012 memprintf(err_msg, "invalid args in converter '%s' : %s", ckw, *err_msg);
Emeric Brun485479d2010-09-23 18:02:19 +02001013 goto out_error;
1014 }
1015 }
Willy Tarreau833cc792013-07-24 15:34:19 +02001016 else if (ARGM(conv->arg_mask)) {
Willy Tarreau97108e02016-11-25 07:33:24 +01001017 memprintf(err_msg, "missing args for converter '%s'", ckw);
Emeric Brun485479d2010-09-23 18:02:19 +02001018 goto out_error;
Emeric Brun107ca302010-01-04 16:16:05 +01001019 }
1020 }
Emeric Brun485479d2010-09-23 18:02:19 +02001021
Willy Tarreau833cc792013-07-24 15:34:19 +02001022 out:
1023 free(fkw);
1024 free(ckw);
Emeric Brun107ca302010-01-04 16:16:05 +01001025 return expr;
1026
1027out_error:
Willy Tarreau12785782012-04-27 21:37:17 +02001028 /* TODO: prune_sample_expr(expr); */
Willy Tarreau833cc792013-07-24 15:34:19 +02001029 expr = NULL;
1030 goto out;
Emeric Brun107ca302010-01-04 16:16:05 +01001031}
1032
1033/*
Willy Tarreau12785782012-04-27 21:37:17 +02001034 * Process a fetch + format conversion of defined by the sample expression <expr>
Willy Tarreau32a6f2e2012-04-25 10:13:36 +02001035 * on request or response considering the <opt> parameter.
Willy Tarreau12785782012-04-27 21:37:17 +02001036 * Returns a pointer on a typed sample structure containing the result or NULL if
1037 * sample is not found or when format conversion failed.
Emeric Brun107ca302010-01-04 16:16:05 +01001038 * If <p> is not null, function returns results in structure pointed by <p>.
Willy Tarreau12785782012-04-27 21:37:17 +02001039 * If <p> is null, functions returns a pointer on a static sample structure.
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +02001040 *
1041 * Note: the fetch functions are required to properly set the return type. The
1042 * conversion functions must do so too. However the cast functions do not need
1043 * to since they're made to cast mutiple types according to what is required.
Willy Tarreau6bcb0a82014-07-30 08:56:35 +02001044 *
1045 * The caller may indicate in <opt> if it considers the result final or not.
1046 * The caller needs to check the SMP_F_MAY_CHANGE flag in p->flags to verify
1047 * if the result is stable or not, according to the following table :
1048 *
1049 * return MAY_CHANGE FINAL Meaning for the sample
1050 * NULL 0 * Not present and will never be (eg: header)
1051 * NULL 1 0 Not present yet, could change (eg: POST param)
1052 * NULL 1 1 Not present yet, will not change anymore
1053 * smp 0 * Present and will not change (eg: header)
1054 * smp 1 0 Present, may change (eg: request length)
1055 * smp 1 1 Present, last known value (eg: request length)
Emeric Brun107ca302010-01-04 16:16:05 +01001056 */
Willy Tarreau192252e2015-04-04 01:47:55 +02001057struct sample *sample_process(struct proxy *px, struct session *sess,
1058 struct stream *strm, unsigned int opt,
Willy Tarreau12785782012-04-27 21:37:17 +02001059 struct sample_expr *expr, struct sample *p)
Emeric Brun107ca302010-01-04 16:16:05 +01001060{
Willy Tarreau12785782012-04-27 21:37:17 +02001061 struct sample_conv_expr *conv_expr;
Emeric Brun107ca302010-01-04 16:16:05 +01001062
Willy Tarreau18387e22013-07-25 12:02:38 +02001063 if (p == NULL) {
Willy Tarreaub4a88f02012-04-23 21:35:11 +02001064 p = &temp_smp;
Willy Tarreau6c616e02014-06-25 16:56:41 +02001065 memset(p, 0, sizeof(*p));
Willy Tarreau18387e22013-07-25 12:02:38 +02001066 }
Emeric Brun107ca302010-01-04 16:16:05 +01001067
Willy Tarreau1777ea62016-03-10 16:15:46 +01001068 smp_set_owner(p, px, sess, strm, opt);
Thierry FOURNIER0786d052015-05-11 15:42:45 +02001069 if (!expr->fetch->process(expr->arg_p, p, expr->fetch->kw, expr->fetch->private))
Emeric Brun107ca302010-01-04 16:16:05 +01001070 return NULL;
1071
Emeric Brun107ca302010-01-04 16:16:05 +01001072 list_for_each_entry(conv_expr, &expr->conv_exprs, list) {
Willy Tarreau12e50112012-04-25 17:21:49 +02001073 /* we want to ensure that p->type can be casted into
1074 * conv_expr->conv->in_type. We have 3 possibilities :
1075 * - NULL => not castable.
1076 * - c_none => nothing to do (let's optimize it)
1077 * - other => apply cast and prepare to fail
1078 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001079 if (!sample_casts[p->data.type][conv_expr->conv->in_type])
Willy Tarreau12e50112012-04-25 17:21:49 +02001080 return NULL;
1081
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001082 if (sample_casts[p->data.type][conv_expr->conv->in_type] != c_none &&
1083 !sample_casts[p->data.type][conv_expr->conv->in_type](p))
Emeric Brun107ca302010-01-04 16:16:05 +01001084 return NULL;
1085
Willy Tarreau12e50112012-04-25 17:21:49 +02001086 /* OK cast succeeded */
1087
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001088 if (!conv_expr->conv->process(conv_expr->arg_p, p, conv_expr->conv->private))
Emeric Brun107ca302010-01-04 16:16:05 +01001089 return NULL;
Emeric Brun107ca302010-01-04 16:16:05 +01001090 }
1091 return p;
1092}
1093
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001094/*
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001095 * Resolve all remaining arguments in proxy <p>. Returns the number of
1096 * errors or 0 if everything is fine.
1097 */
1098int smp_resolve_args(struct proxy *p)
1099{
1100 struct arg_list *cur, *bak;
1101 const char *ctx, *where;
1102 const char *conv_ctx, *conv_pre, *conv_pos;
1103 struct userlist *ul;
Willy Tarreau46947782015-01-19 19:00:58 +01001104 struct my_regex *reg;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001105 struct arg *arg;
1106 int cfgerr = 0;
Willy Tarreau46947782015-01-19 19:00:58 +01001107 int rflags;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001108
1109 list_for_each_entry_safe(cur, bak, &p->conf.args.list, list) {
1110 struct proxy *px;
1111 struct server *srv;
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001112 struct stktable *t;
1113 char *pname, *sname, *stktname;
Willy Tarreau46947782015-01-19 19:00:58 +01001114 char *err;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001115
1116 arg = cur->arg;
1117
1118 /* prepare output messages */
1119 conv_pre = conv_pos = conv_ctx = "";
1120 if (cur->conv) {
1121 conv_ctx = cur->conv;
1122 conv_pre = "conversion keyword '";
1123 conv_pos = "' for ";
1124 }
1125
1126 where = "in";
1127 ctx = "sample fetch keyword";
1128 switch (cur->ctx) {
Dragan Dosen0b85ece2015-09-25 19:17:44 +02001129 case ARGC_STK: where = "in stick rule in"; break;
1130 case ARGC_TRK: where = "in tracking rule in"; break;
1131 case ARGC_LOG: where = "in log-format string in"; break;
1132 case ARGC_LOGSD: where = "in log-format-sd string in"; break;
1133 case ARGC_HRQ: where = "in http-request header format string in"; break;
1134 case ARGC_HRS: where = "in http-response header format string in"; break;
1135 case ARGC_UIF: where = "in unique-id-format string in"; break;
1136 case ARGC_RDR: where = "in redirect format string in"; break;
1137 case ARGC_CAP: where = "in capture rule in"; break;
1138 case ARGC_ACL: ctx = "ACL keyword"; break;
1139 case ARGC_SRV: where = "in server directive in"; break;
Christopher Fauletf7e4e7e2016-10-27 22:29:49 +02001140 case ARGC_SPOE: where = "in spoe-message directive in"; break;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001141 }
1142
1143 /* set a few default settings */
1144 px = p;
1145 pname = p->id;
1146
1147 switch (arg->type) {
1148 case ARGT_SRV:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001149 if (!arg->data.str.data) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001150 ha_alert("parsing [%s:%d] : missing server name in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1151 cur->file, cur->line,
1152 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001153 cfgerr++;
1154 continue;
1155 }
1156
1157 /* we support two formats : "bck/srv" and "srv" */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001158 sname = strrchr(arg->data.str.area, '/');
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001159
1160 if (sname) {
1161 *sname++ = '\0';
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001162 pname = arg->data.str.area;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001163
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001164 px = proxy_be_by_name(pname);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001165 if (!px) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001166 ha_alert("parsing [%s:%d] : unable to find proxy '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1167 cur->file, cur->line, pname,
1168 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001169 cfgerr++;
1170 break;
1171 }
1172 }
1173 else
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001174 sname = arg->data.str.area;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001175
1176 srv = findserver(px, sname);
1177 if (!srv) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001178 ha_alert("parsing [%s:%d] : unable to find server '%s' in proxy '%s', referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1179 cur->file, cur->line, sname, pname,
1180 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001181 cfgerr++;
1182 break;
1183 }
1184
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001185 free(arg->data.str.area);
1186 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001187 arg->unresolved = 0;
1188 arg->data.srv = srv;
1189 break;
1190
1191 case ARGT_FE:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001192 if (arg->data.str.data) {
1193 pname = arg->data.str.area;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001194 px = proxy_fe_by_name(pname);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001195 }
1196
1197 if (!px) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001198 ha_alert("parsing [%s:%d] : unable to find frontend '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1199 cur->file, cur->line, pname,
1200 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001201 cfgerr++;
1202 break;
1203 }
1204
1205 if (!(px->cap & PR_CAP_FE)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001206 ha_alert("parsing [%s:%d] : proxy '%s', referenced in arg %d of %s%s%s%s '%s' %s proxy '%s', has not frontend capability.\n",
1207 cur->file, cur->line, pname,
1208 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001209 cfgerr++;
1210 break;
1211 }
1212
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001213 free(arg->data.str.area);
1214 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001215 arg->unresolved = 0;
1216 arg->data.prx = px;
1217 break;
1218
1219 case ARGT_BE:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001220 if (arg->data.str.data) {
1221 pname = arg->data.str.area;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001222 px = proxy_be_by_name(pname);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001223 }
1224
1225 if (!px) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001226 ha_alert("parsing [%s:%d] : unable to find backend '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1227 cur->file, cur->line, pname,
1228 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001229 cfgerr++;
1230 break;
1231 }
1232
1233 if (!(px->cap & PR_CAP_BE)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001234 ha_alert("parsing [%s:%d] : proxy '%s', referenced in arg %d of %s%s%s%s '%s' %s proxy '%s', has not backend capability.\n",
1235 cur->file, cur->line, pname,
1236 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001237 cfgerr++;
1238 break;
1239 }
1240
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001241 free(arg->data.str.area);
1242 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001243 arg->unresolved = 0;
1244 arg->data.prx = px;
1245 break;
1246
1247 case ARGT_TAB:
Frédéric Lécaille9eae8932019-06-20 09:31:04 +02001248 if (arg->data.str.data)
1249 stktname = arg->data.str.area;
1250 else
1251 stktname = px->id;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001252
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001253 t = stktable_find_by_name(stktname);
1254 if (!t) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001255 ha_alert("parsing [%s:%d] : unable to find table '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001256 cur->file, cur->line, stktname,
Christopher Faulet767a84b2017-11-24 16:50:31 +01001257 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001258 cfgerr++;
1259 break;
1260 }
1261
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001262 if (!t->size) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001263 ha_alert("parsing [%s:%d] : no table in proxy '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001264 cur->file, cur->line, stktname,
Christopher Faulet767a84b2017-11-24 16:50:31 +01001265 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001266 cfgerr++;
1267 break;
1268 }
1269
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001270 if (t->proxy && (p->bind_proc & ~t->proxy->bind_proc)) {
Willy Tarreau151e1ca2019-02-05 11:38:38 +01001271 ha_alert("parsing [%s:%d] : stick-table '%s' not present on all processes covered by proxy '%s'.\n",
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001272 cur->file, cur->line, t->proxy->id, p->id);
Willy Tarreau1a0fe3b2019-02-06 10:25:07 +01001273 cfgerr++;
1274 break;
Willy Tarreau151e1ca2019-02-05 11:38:38 +01001275 }
1276
Frédéric Lécaille015e4d72019-03-19 14:55:01 +01001277 if (t->proxies_list != p) {
1278 p->next_stkt_ref = t->proxies_list;
1279 t->proxies_list = p;
1280 }
1281
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001282 free(arg->data.str.area);
1283 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001284 arg->unresolved = 0;
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001285 arg->data.t = t;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001286 break;
1287
1288 case ARGT_USR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001289 if (!arg->data.str.data) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001290 ha_alert("parsing [%s:%d] : missing userlist name in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1291 cur->file, cur->line,
1292 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001293 cfgerr++;
1294 break;
1295 }
1296
1297 if (p->uri_auth && p->uri_auth->userlist &&
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001298 !strcmp(p->uri_auth->userlist->name, arg->data.str.area))
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001299 ul = p->uri_auth->userlist;
1300 else
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001301 ul = auth_find_userlist(arg->data.str.area);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001302
1303 if (!ul) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001304 ha_alert("parsing [%s:%d] : unable to find userlist '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001305 cur->file, cur->line,
1306 arg->data.str.area,
Christopher Faulet767a84b2017-11-24 16:50:31 +01001307 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001308 cfgerr++;
1309 break;
1310 }
1311
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001312 free(arg->data.str.area);
1313 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001314 arg->unresolved = 0;
1315 arg->data.usr = ul;
1316 break;
Willy Tarreau46947782015-01-19 19:00:58 +01001317
1318 case ARGT_REG:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001319 if (!arg->data.str.data) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001320 ha_alert("parsing [%s:%d] : missing regex in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1321 cur->file, cur->line,
1322 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreau46947782015-01-19 19:00:58 +01001323 cfgerr++;
1324 continue;
1325 }
1326
Willy Tarreau46947782015-01-19 19:00:58 +01001327 rflags = 0;
1328 rflags |= (arg->type_flags & ARGF_REG_ICASE) ? REG_ICASE : 0;
1329 err = NULL;
1330
Dragan Dosen26743032019-04-30 15:54:36 +02001331 if (!(reg = regex_comp(arg->data.str.area, !(rflags & REG_ICASE), 1 /* capture substr */, &err))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001332 ha_alert("parsing [%s:%d] : error in regex '%s' in arg %d of %s%s%s%s '%s' %s proxy '%s' : %s.\n",
1333 cur->file, cur->line,
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001334 arg->data.str.area,
Christopher Faulet767a84b2017-11-24 16:50:31 +01001335 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id, err);
Willy Tarreau46947782015-01-19 19:00:58 +01001336 cfgerr++;
1337 continue;
1338 }
1339
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001340 free(arg->data.str.area);
1341 arg->data.str.area = NULL;
Willy Tarreau46947782015-01-19 19:00:58 +01001342 arg->unresolved = 0;
1343 arg->data.reg = reg;
1344 break;
1345
1346
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001347 }
1348
1349 LIST_DEL(&cur->list);
1350 free(cur);
1351 } /* end of args processing */
1352
1353 return cfgerr;
1354}
1355
1356/*
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001357 * Process a fetch + format conversion as defined by the sample expression
1358 * <expr> on request or response considering the <opt> parameter. The output is
Adis Nezirovic79beb242015-07-06 15:41:02 +02001359 * not explicitly set to <smp_type>, but shall be compatible with it as
1360 * specified by 'sample_casts' table. If a stable sample can be fetched, or an
1361 * unstable one when <opt> contains SMP_OPT_FINAL, the sample is converted and
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001362 * returned without the SMP_F_MAY_CHANGE flag. If an unstable sample is found
1363 * and <opt> does not contain SMP_OPT_FINAL, then the sample is returned as-is
1364 * with its SMP_F_MAY_CHANGE flag so that the caller can check it and decide to
1365 * take actions (eg: wait longer). If a sample could not be found or could not
Willy Tarreau6bcb0a82014-07-30 08:56:35 +02001366 * be converted, NULL is returned. The caller MUST NOT use the sample if the
1367 * SMP_F_MAY_CHANGE flag is present, as it is used only as a hint that there is
1368 * still hope to get it after waiting longer, and is not converted to string.
1369 * The possible output combinations are the following :
1370 *
1371 * return MAY_CHANGE FINAL Meaning for the sample
1372 * NULL * * Not present and will never be (eg: header)
1373 * smp 0 * Final value converted (eg: header)
1374 * smp 1 0 Not present yet, may appear later (eg: header)
1375 * smp 1 1 never happens (either flag is cleared on output)
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001376 */
Adis Nezirovic79beb242015-07-06 15:41:02 +02001377struct sample *sample_fetch_as_type(struct proxy *px, struct session *sess,
Willy Tarreau192252e2015-04-04 01:47:55 +02001378 struct stream *strm, unsigned int opt,
Adis Nezirovic79beb242015-07-06 15:41:02 +02001379 struct sample_expr *expr, int smp_type)
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001380{
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001381 struct sample *smp = &temp_smp;
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001382
Willy Tarreau6c616e02014-06-25 16:56:41 +02001383 memset(smp, 0, sizeof(*smp));
1384
Willy Tarreau192252e2015-04-04 01:47:55 +02001385 if (!sample_process(px, sess, strm, opt, expr, smp)) {
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001386 if ((smp->flags & SMP_F_MAY_CHANGE) && !(opt & SMP_OPT_FINAL))
1387 return smp;
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001388 return NULL;
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001389 }
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001390
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001391 if (!sample_casts[smp->data.type][smp_type])
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001392 return NULL;
1393
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001394 if (!sample_casts[smp->data.type][smp_type](smp))
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001395 return NULL;
1396
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001397 smp->flags &= ~SMP_F_MAY_CHANGE;
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001398 return smp;
1399}
1400
Christopher Faulet476e5d02016-10-26 11:34:47 +02001401static void release_sample_arg(struct arg *p)
1402{
1403 struct arg *p_back = p;
1404
1405 if (!p)
1406 return;
1407
1408 while (p->type != ARGT_STOP) {
1409 if (p->type == ARGT_STR || p->unresolved) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001410 free(p->data.str.area);
1411 p->data.str.area = NULL;
Christopher Faulet476e5d02016-10-26 11:34:47 +02001412 p->unresolved = 0;
1413 }
1414 else if (p->type == ARGT_REG) {
Dragan Dosen26743032019-04-30 15:54:36 +02001415 regex_free(p->data.reg);
1416 p->data.reg = NULL;
Christopher Faulet476e5d02016-10-26 11:34:47 +02001417 }
1418 p++;
1419 }
1420
1421 if (p_back != empty_arg_list)
1422 free(p_back);
1423}
1424
1425void release_sample_expr(struct sample_expr *expr)
1426{
1427 struct sample_conv_expr *conv_expr, *conv_exprb;
1428
1429 if (!expr)
1430 return;
1431
1432 list_for_each_entry_safe(conv_expr, conv_exprb, &expr->conv_exprs, list)
1433 release_sample_arg(conv_expr->arg_p);
1434 release_sample_arg(expr->arg_p);
1435 free(expr);
1436}
1437
Emeric Brun107ca302010-01-04 16:16:05 +01001438/*****************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +02001439/* Sample format convert functions */
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +02001440/* These functions set the data type on return. */
Emeric Brun107ca302010-01-04 16:16:05 +01001441/*****************************************************************/
1442
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001443#ifdef DEBUG_EXPR
1444static int sample_conv_debug(const struct arg *arg_p, struct sample *smp, void *private)
1445{
1446 int i;
1447 struct sample tmp;
1448
1449 if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001450 fprintf(stderr, "[debug converter] type: %s ", smp_to_type[smp->data.type]);
1451 if (!sample_casts[smp->data.type][SMP_T_STR]) {
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001452 fprintf(stderr, "(undisplayable)");
1453 } else {
1454
1455 /* Copy sample fetch. This put the sample as const, the
1456 * cast will copy data if a transformation is required.
1457 */
1458 memcpy(&tmp, smp, sizeof(struct sample));
1459 tmp.flags = SMP_F_CONST;
1460
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001461 if (!sample_casts[smp->data.type][SMP_T_STR](&tmp))
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001462 fprintf(stderr, "(undisplayable)");
1463
1464 else {
1465 /* Display the displayable chars*. */
1466 fprintf(stderr, "<");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001467 for (i = 0; i < tmp.data.u.str.data; i++) {
1468 if (isprint(tmp.data.u.str.area[i]))
1469 fputc(tmp.data.u.str.area[i],
1470 stderr);
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001471 else
1472 fputc('.', stderr);
1473 }
1474 }
1475 fprintf(stderr, ">\n");
1476 }
1477 }
1478 return 1;
1479}
1480#endif
1481
Holger Just1bfc24b2017-05-06 00:56:53 +02001482static int sample_conv_base642bin(const struct arg *arg_p, struct sample *smp, void *private)
1483{
Willy Tarreau83061a82018-07-13 11:56:34 +02001484 struct buffer *trash = get_trash_chunk();
Holger Just1bfc24b2017-05-06 00:56:53 +02001485 int bin_len;
1486
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001487 trash->data = 0;
1488 bin_len = base64dec(smp->data.u.str.area, smp->data.u.str.data,
1489 trash->area, trash->size);
Holger Just1bfc24b2017-05-06 00:56:53 +02001490 if (bin_len < 0)
1491 return 0;
1492
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001493 trash->data = bin_len;
Holger Just1bfc24b2017-05-06 00:56:53 +02001494 smp->data.u.str = *trash;
1495 smp->data.type = SMP_T_BIN;
1496 smp->flags &= ~SMP_F_CONST;
1497 return 1;
1498}
1499
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001500static int sample_conv_bin2base64(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun53d1a982014-04-30 18:21:37 +02001501{
Willy Tarreau83061a82018-07-13 11:56:34 +02001502 struct buffer *trash = get_trash_chunk();
Emeric Brun53d1a982014-04-30 18:21:37 +02001503 int b64_len;
1504
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001505 trash->data = 0;
1506 b64_len = a2base64(smp->data.u.str.area, smp->data.u.str.data,
1507 trash->area, trash->size);
Emeric Brun53d1a982014-04-30 18:21:37 +02001508 if (b64_len < 0)
1509 return 0;
1510
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001511 trash->data = b64_len;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001512 smp->data.u.str = *trash;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001513 smp->data.type = SMP_T_STR;
Emeric Brun53d1a982014-04-30 18:21:37 +02001514 smp->flags &= ~SMP_F_CONST;
1515 return 1;
1516}
1517
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001518static int sample_conv_sha1(const struct arg *arg_p, struct sample *smp, void *private)
1519{
1520 blk_SHA_CTX ctx;
Willy Tarreau83061a82018-07-13 11:56:34 +02001521 struct buffer *trash = get_trash_chunk();
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001522
1523 memset(&ctx, 0, sizeof(ctx));
1524
1525 blk_SHA1_Init(&ctx);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001526 blk_SHA1_Update(&ctx, smp->data.u.str.area, smp->data.u.str.data);
1527 blk_SHA1_Final((unsigned char *) trash->area, &ctx);
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001528
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001529 trash->data = 20;
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001530 smp->data.u.str = *trash;
1531 smp->data.type = SMP_T_BIN;
1532 smp->flags &= ~SMP_F_CONST;
1533 return 1;
1534}
1535
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001536static int sample_conv_bin2hex(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001537{
Willy Tarreau83061a82018-07-13 11:56:34 +02001538 struct buffer *trash = get_trash_chunk();
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001539 unsigned char c;
1540 int ptr = 0;
1541
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001542 trash->data = 0;
1543 while (ptr < smp->data.u.str.data && trash->data <= trash->size - 2) {
1544 c = smp->data.u.str.area[ptr++];
1545 trash->area[trash->data++] = hextab[(c >> 4) & 0xF];
1546 trash->area[trash->data++] = hextab[c & 0xF];
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001547 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001548 smp->data.u.str = *trash;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001549 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01001550 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001551 return 1;
1552}
1553
Dragan Dosen3f957b22017-10-24 09:27:34 +02001554static int sample_conv_hex2int(const struct arg *arg_p, struct sample *smp, void *private)
1555{
1556 long long int n = 0;
1557 int i, c;
1558
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001559 for (i = 0; i < smp->data.u.str.data; i++) {
1560 if ((c = hex2i(smp->data.u.str.area[i])) < 0)
Dragan Dosen3f957b22017-10-24 09:27:34 +02001561 return 0;
1562 n = (n << 4) + c;
1563 }
1564
1565 smp->data.u.sint = n;
1566 smp->data.type = SMP_T_SINT;
1567 smp->flags &= ~SMP_F_CONST;
1568 return 1;
1569}
1570
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001571/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001572static int sample_conv_djb2(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001573{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001574 smp->data.u.sint = hash_djb2(smp->data.u.str.area,
1575 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001576 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001577 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001578 smp->data.type = SMP_T_SINT;
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001579 return 1;
1580}
1581
Willy Tarreau60a2ee72017-12-15 07:13:48 +01001582static int sample_conv_length(const struct arg *arg_p, struct sample *smp, void *private)
Etienne Carriereed0d24e2017-12-13 13:41:34 +01001583{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001584 int i = smp->data.u.str.data;
Etienne Carriereed0d24e2017-12-13 13:41:34 +01001585 smp->data.u.sint = i;
1586 smp->data.type = SMP_T_SINT;
1587 return 1;
1588}
1589
1590
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001591static int sample_conv_str2lower(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun107ca302010-01-04 16:16:05 +01001592{
1593 int i;
1594
Willy Tarreauf0645dc2016-08-09 14:29:38 +02001595 if (!smp_make_rw(smp))
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01001596 return 0;
1597
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001598 for (i = 0; i < smp->data.u.str.data; i++) {
1599 if ((smp->data.u.str.area[i] >= 'A') && (smp->data.u.str.area[i] <= 'Z'))
1600 smp->data.u.str.area[i] += 'a' - 'A';
Emeric Brun107ca302010-01-04 16:16:05 +01001601 }
1602 return 1;
1603}
1604
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001605static int sample_conv_str2upper(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun107ca302010-01-04 16:16:05 +01001606{
1607 int i;
1608
Willy Tarreauf0645dc2016-08-09 14:29:38 +02001609 if (!smp_make_rw(smp))
Emeric Brun485479d2010-09-23 18:02:19 +02001610 return 0;
1611
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001612 for (i = 0; i < smp->data.u.str.data; i++) {
1613 if ((smp->data.u.str.area[i] >= 'a') && (smp->data.u.str.area[i] <= 'z'))
1614 smp->data.u.str.area[i] += 'A' - 'a';
Emeric Brun107ca302010-01-04 16:16:05 +01001615 }
1616 return 1;
1617}
1618
Tim Duesterhus1478aa72018-01-25 16:24:51 +01001619/* takes the IPv4 mask in args[0] and an optional IPv6 mask in args[1] */
1620static int sample_conv_ipmask(const struct arg *args, struct sample *smp, void *private)
Willy Tarreaud31d6eb2010-01-26 18:01:41 +01001621{
Tim Duesterhus1478aa72018-01-25 16:24:51 +01001622 /* Attempt to convert to IPv4 to apply the correct mask. */
1623 c_ipv62ip(smp);
1624
1625 if (smp->data.type == SMP_T_IPV4) {
1626 smp->data.u.ipv4.s_addr &= args[0].data.ipv4.s_addr;
1627 smp->data.type = SMP_T_IPV4;
1628 }
1629 else if (smp->data.type == SMP_T_IPV6) {
1630 /* IPv6 cannot be converted without an IPv6 mask. */
1631 if (args[1].type != ARGT_IPV6)
1632 return 0;
1633
1634 *(uint32_t*)&smp->data.u.ipv6.s6_addr[0] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[0];
1635 *(uint32_t*)&smp->data.u.ipv6.s6_addr[4] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[4];
1636 *(uint32_t*)&smp->data.u.ipv6.s6_addr[8] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[8];
1637 *(uint32_t*)&smp->data.u.ipv6.s6_addr[12] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[12];
1638 smp->data.type = SMP_T_IPV6;
1639 }
1640
Willy Tarreaud31d6eb2010-01-26 18:01:41 +01001641 return 1;
1642}
1643
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001644/* takes an UINT value on input supposed to represent the time since EPOCH,
1645 * adds an optional offset found in args[1] and emits a string representing
1646 * the local time in the format specified in args[1] using strftime().
1647 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001648static int sample_conv_ltime(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001649{
Willy Tarreau83061a82018-07-13 11:56:34 +02001650 struct buffer *temp;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001651 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001652 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001653 struct tm *tm;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001654
1655 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001656 if (args[1].type == ARGT_SINT)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001657 curr_date += args[1].data.sint;
1658
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001659 tm = localtime(&curr_date);
1660 if (!tm)
1661 return 0;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001662 temp = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001663 temp->data = strftime(temp->area, temp->size, args[0].data.str.area,
1664 tm);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001665 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001666 smp->data.type = SMP_T_STR;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001667 return 1;
1668}
1669
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001670/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001671static int sample_conv_sdbm(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001672{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001673 smp->data.u.sint = hash_sdbm(smp->data.u.str.area,
1674 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001675 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001676 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001677 smp->data.type = SMP_T_SINT;
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001678 return 1;
1679}
1680
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001681/* takes an UINT value on input supposed to represent the time since EPOCH,
1682 * adds an optional offset found in args[1] and emits a string representing
1683 * the UTC date in the format specified in args[1] using strftime().
1684 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001685static int sample_conv_utime(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001686{
Willy Tarreau83061a82018-07-13 11:56:34 +02001687 struct buffer *temp;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001688 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001689 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001690 struct tm *tm;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001691
1692 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001693 if (args[1].type == ARGT_SINT)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001694 curr_date += args[1].data.sint;
1695
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001696 tm = gmtime(&curr_date);
1697 if (!tm)
1698 return 0;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001699 temp = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001700 temp->data = strftime(temp->area, temp->size, args[0].data.str.area,
1701 tm);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001702 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001703 smp->data.type = SMP_T_STR;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001704 return 1;
1705}
1706
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001707/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001708static int sample_conv_wt6(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001709{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001710 smp->data.u.sint = hash_wt6(smp->data.u.str.area,
1711 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001712 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001713 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001714 smp->data.type = SMP_T_SINT;
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001715 return 1;
1716}
1717
Thierry FOURNIER01e09742016-12-26 11:46:11 +01001718/* hashes the binary input into a 32-bit unsigned int using xxh.
1719 * The seed of the hash defaults to 0 but can be changd in argument 1.
1720 */
1721static int sample_conv_xxh32(const struct arg *arg_p, struct sample *smp, void *private)
1722{
1723 unsigned int seed;
1724
1725 if (arg_p && arg_p->data.sint)
1726 seed = arg_p->data.sint;
1727 else
1728 seed = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001729 smp->data.u.sint = XXH32(smp->data.u.str.area, smp->data.u.str.data,
1730 seed);
Thierry FOURNIER01e09742016-12-26 11:46:11 +01001731 smp->data.type = SMP_T_SINT;
1732 return 1;
1733}
1734
1735/* hashes the binary input into a 64-bit unsigned int using xxh.
1736 * In fact, the function returns a 64 bit unsigned, but the sample
1737 * storage of haproxy only proposes 64-bits signed, so the value is
1738 * cast as signed. This cast doesn't impact the hash repartition.
1739 * The seed of the hash defaults to 0 but can be changd in argument 1.
1740 */
1741static int sample_conv_xxh64(const struct arg *arg_p, struct sample *smp, void *private)
1742{
1743 unsigned long long int seed;
1744
1745 if (arg_p && arg_p->data.sint)
1746 seed = (unsigned long long int)arg_p->data.sint;
1747 else
1748 seed = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001749 smp->data.u.sint = (long long int)XXH64(smp->data.u.str.area,
1750 smp->data.u.str.data, seed);
Thierry FOURNIER01e09742016-12-26 11:46:11 +01001751 smp->data.type = SMP_T_SINT;
1752 return 1;
1753}
1754
Willy Tarreau80599772015-01-20 19:35:24 +01001755/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001756static int sample_conv_crc32(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau80599772015-01-20 19:35:24 +01001757{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001758 smp->data.u.sint = hash_crc32(smp->data.u.str.area,
1759 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001760 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001761 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001762 smp->data.type = SMP_T_SINT;
Willy Tarreau80599772015-01-20 19:35:24 +01001763 return 1;
1764}
1765
Emmanuel Hocdet50791a72018-03-21 11:19:01 +01001766/* hashes the binary input into crc32c (RFC4960, Appendix B [8].) */
1767static int sample_conv_crc32c(const struct arg *arg_p, struct sample *smp, void *private)
1768{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001769 smp->data.u.sint = hash_crc32c(smp->data.u.str.area,
1770 smp->data.u.str.data);
Emmanuel Hocdet50791a72018-03-21 11:19:01 +01001771 if (arg_p && arg_p->data.sint)
1772 smp->data.u.sint = full_hash(smp->data.u.sint);
1773 smp->data.type = SMP_T_SINT;
1774 return 1;
1775}
1776
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001777/* This function escape special json characters. The returned string can be
1778 * safely set between two '"' and used as json string. The json string is
1779 * defined like this:
1780 *
1781 * any Unicode character except '"' or '\' or control character
1782 * \", \\, \/, \b, \f, \n, \r, \t, \u + four-hex-digits
1783 *
1784 * The enum input_type contain all the allowed mode for decoding the input
1785 * string.
1786 */
1787enum input_type {
1788 IT_ASCII = 0,
1789 IT_UTF8,
1790 IT_UTF8S,
1791 IT_UTF8P,
1792 IT_UTF8PS,
1793};
1794static int sample_conv_json_check(struct arg *arg, struct sample_conv *conv,
1795 const char *file, int line, char **err)
1796{
1797 if (!arg) {
1798 memprintf(err, "Unexpected empty arg list");
1799 return 0;
1800 }
1801
1802 if (arg->type != ARGT_STR) {
1803 memprintf(err, "Unexpected arg type");
1804 return 0;
1805 }
1806
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001807 if (strcmp(arg->data.str.area, "") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001808 arg->type = ARGT_SINT;
1809 arg->data.sint = IT_ASCII;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001810 return 1;
1811 }
1812
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001813 else if (strcmp(arg->data.str.area, "ascii") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001814 arg->type = ARGT_SINT;
1815 arg->data.sint = IT_ASCII;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001816 return 1;
1817 }
1818
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001819 else if (strcmp(arg->data.str.area, "utf8") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001820 arg->type = ARGT_SINT;
1821 arg->data.sint = IT_UTF8;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001822 return 1;
1823 }
1824
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001825 else if (strcmp(arg->data.str.area, "utf8s") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001826 arg->type = ARGT_SINT;
1827 arg->data.sint = IT_UTF8S;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001828 return 1;
1829 }
1830
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001831 else if (strcmp(arg->data.str.area, "utf8p") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001832 arg->type = ARGT_SINT;
1833 arg->data.sint = IT_UTF8P;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001834 return 1;
1835 }
1836
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001837 else if (strcmp(arg->data.str.area, "utf8ps") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001838 arg->type = ARGT_SINT;
1839 arg->data.sint = IT_UTF8PS;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001840 return 1;
1841 }
1842
Thierry FOURNIER / OZON.IOa69c9122016-11-23 01:13:57 +01001843 memprintf(err, "Unexpected input code type. "
1844 "Allowed value are 'ascii', 'utf8', 'utf8s', 'utf8p' and 'utf8ps'");
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001845 return 0;
1846}
1847
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001848static int sample_conv_json(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001849{
Willy Tarreau83061a82018-07-13 11:56:34 +02001850 struct buffer *temp;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001851 char _str[7]; /* \u + 4 hex digit + null char for sprintf. */
1852 const char *str;
1853 int len;
1854 enum input_type input_type = IT_ASCII;
1855 unsigned int c;
1856 unsigned int ret;
1857 char *p;
1858
1859 if (arg_p)
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001860 input_type = arg_p->data.sint;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001861
1862 temp = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001863 temp->data = 0;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001864
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001865 p = smp->data.u.str.area;
1866 while (p < smp->data.u.str.area + smp->data.u.str.data) {
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001867
1868 if (input_type == IT_ASCII) {
1869 /* Read input as ASCII. */
1870 c = *(unsigned char *)p;
1871 p++;
1872 }
1873 else {
1874 /* Read input as UTF8. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001875 ret = utf8_next(p,
1876 smp->data.u.str.data - ( p - smp->data.u.str.area),
1877 &c);
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001878 p += utf8_return_length(ret);
1879
1880 if (input_type == IT_UTF8 && utf8_return_code(ret) != UTF8_CODE_OK)
1881 return 0;
1882 if (input_type == IT_UTF8S && utf8_return_code(ret) != UTF8_CODE_OK)
1883 continue;
1884 if (input_type == IT_UTF8P && utf8_return_code(ret) & (UTF8_CODE_INVRANGE|UTF8_CODE_BADSEQ))
1885 return 0;
1886 if (input_type == IT_UTF8PS && utf8_return_code(ret) & (UTF8_CODE_INVRANGE|UTF8_CODE_BADSEQ))
1887 continue;
1888
1889 /* Check too big values. */
1890 if ((unsigned int)c > 0xffff) {
1891 if (input_type == IT_UTF8 || input_type == IT_UTF8P)
1892 return 0;
1893 continue;
1894 }
1895 }
1896
1897 /* Convert character. */
1898 if (c == '"') {
1899 len = 2;
1900 str = "\\\"";
1901 }
1902 else if (c == '\\') {
1903 len = 2;
1904 str = "\\\\";
1905 }
1906 else if (c == '/') {
1907 len = 2;
1908 str = "\\/";
1909 }
1910 else if (c == '\b') {
1911 len = 2;
1912 str = "\\b";
1913 }
1914 else if (c == '\f') {
1915 len = 2;
1916 str = "\\f";
1917 }
1918 else if (c == '\r') {
1919 len = 2;
1920 str = "\\r";
1921 }
1922 else if (c == '\n') {
1923 len = 2;
1924 str = "\\n";
1925 }
1926 else if (c == '\t') {
1927 len = 2;
1928 str = "\\t";
1929 }
1930 else if (c > 0xff || !isprint(c)) {
1931 /* isprint generate a segfault if c is too big. The man says that
1932 * c must have the value of an unsigned char or EOF.
1933 */
1934 len = 6;
1935 _str[0] = '\\';
1936 _str[1] = 'u';
1937 snprintf(&_str[2], 5, "%04x", (unsigned short)c);
1938 str = _str;
1939 }
1940 else {
1941 len = 1;
1942 str = (char *)&c;
1943 }
1944
1945 /* Check length */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001946 if (temp->data + len > temp->size)
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001947 return 0;
1948
1949 /* Copy string. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001950 memcpy(temp->area + temp->data, str, len);
1951 temp->data += len;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001952 }
1953
1954 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001955 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001956 smp->data.type = SMP_T_STR;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001957
1958 return 1;
1959}
1960
Emeric Brun54c4ac82014-11-03 15:32:43 +01001961/* This sample function is designed to extract some bytes from an input buffer.
1962 * First arg is the offset.
1963 * Optional second arg is the length to truncate */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001964static int sample_conv_bytes(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun54c4ac82014-11-03 15:32:43 +01001965{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001966 if (smp->data.u.str.data <= arg_p[0].data.sint) {
1967 smp->data.u.str.data = 0;
Emeric Brun54c4ac82014-11-03 15:32:43 +01001968 return 1;
1969 }
1970
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001971 if (smp->data.u.str.size)
1972 smp->data.u.str.size -= arg_p[0].data.sint;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001973 smp->data.u.str.data -= arg_p[0].data.sint;
1974 smp->data.u.str.area += arg_p[0].data.sint;
Emeric Brun54c4ac82014-11-03 15:32:43 +01001975
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001976 if ((arg_p[1].type == ARGT_SINT) && (arg_p[1].data.sint < smp->data.u.str.data))
1977 smp->data.u.str.data = arg_p[1].data.sint;
Emeric Brun54c4ac82014-11-03 15:32:43 +01001978
1979 return 1;
1980}
1981
Emeric Brunf399b0d2014-11-03 17:07:03 +01001982static int sample_conv_field_check(struct arg *args, struct sample_conv *conv,
1983 const char *file, int line, char **err)
1984{
1985 struct arg *arg = args;
1986
1987 if (!arg) {
1988 memprintf(err, "Unexpected empty arg list");
1989 return 0;
1990 }
1991
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001992 if (arg->type != ARGT_SINT) {
Emeric Brunf399b0d2014-11-03 17:07:03 +01001993 memprintf(err, "Unexpected arg type");
1994 return 0;
1995 }
1996
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001997 if (!arg->data.sint) {
Emeric Brunf399b0d2014-11-03 17:07:03 +01001998 memprintf(err, "Unexpected value 0 for index");
1999 return 0;
2000 }
2001
2002 arg++;
2003
2004 if (arg->type != ARGT_STR) {
2005 memprintf(err, "Unexpected arg type");
2006 return 0;
2007 }
2008
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002009 if (!arg->data.str.data) {
Emeric Brunf399b0d2014-11-03 17:07:03 +01002010 memprintf(err, "Empty separators list");
2011 return 0;
2012 }
2013
2014 return 1;
2015}
2016
2017/* This sample function is designed to a return selected part of a string (field).
2018 * First arg is the index of the field (start at 1)
2019 * Second arg is a char list of separators (type string)
2020 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002021static int sample_conv_field(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brunf399b0d2014-11-03 17:07:03 +01002022{
Marcin Deranek9631a282018-04-16 14:30:46 +02002023 int field;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002024 char *start, *end;
2025 int i;
Marcin Deranek9631a282018-04-16 14:30:46 +02002026 int count = (arg_p[2].type == ARGT_SINT) ? arg_p[2].data.sint : 1;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002027
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002028 if (!arg_p[0].data.sint)
Emeric Brunf399b0d2014-11-03 17:07:03 +01002029 return 0;
2030
Marcin Deranek9631a282018-04-16 14:30:46 +02002031 if (arg_p[0].data.sint < 0) {
2032 field = -1;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002033 end = start = smp->data.u.str.area + smp->data.u.str.data;
2034 while (start > smp->data.u.str.area) {
2035 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2036 if (*(start-1) == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002037 if (field == arg_p[0].data.sint) {
2038 if (count == 1)
2039 goto found;
2040 else if (count > 1)
2041 count--;
2042 } else {
2043 end = start-1;
2044 field--;
2045 }
2046 break;
2047 }
Emeric Brunf399b0d2014-11-03 17:07:03 +01002048 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002049 start--;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002050 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002051 } else {
2052 field = 1;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002053 end = start = smp->data.u.str.area;
2054 while (end - smp->data.u.str.area < smp->data.u.str.data) {
2055 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2056 if (*end == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002057 if (field == arg_p[0].data.sint) {
2058 if (count == 1)
2059 goto found;
2060 else if (count > 1)
2061 count--;
2062 } else {
2063 start = end+1;
2064 field++;
2065 }
2066 break;
2067 }
2068 }
2069 end++;
2070 }
Emeric Brunf399b0d2014-11-03 17:07:03 +01002071 }
2072
2073 /* Field not found */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002074 if (field != arg_p[0].data.sint) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002075 smp->data.u.str.data = 0;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002076 return 1;
2077 }
2078found:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002079 smp->data.u.str.data = end - start;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002080 /* If ret string is len 0, no need to
2081 change pointers or to update size */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002082 if (!smp->data.u.str.data)
Emeric Brunf399b0d2014-11-03 17:07:03 +01002083 return 1;
2084
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002085 smp->data.u.str.area = start;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002086
2087 /* Compute remaining size if needed
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002088 Note: smp->data.u.str.size cannot be set to 0 */
2089 if (smp->data.u.str.size)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002090 smp->data.u.str.size -= start - smp->data.u.str.area;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002091
2092 return 1;
2093}
2094
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002095/* This sample function is designed to return a word from a string.
2096 * First arg is the index of the word (start at 1)
2097 * Second arg is a char list of words separators (type string)
2098 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002099static int sample_conv_word(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002100{
Marcin Deranek9631a282018-04-16 14:30:46 +02002101 int word;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002102 char *start, *end;
2103 int i, issep, inword;
Marcin Deranek9631a282018-04-16 14:30:46 +02002104 int count = (arg_p[2].type == ARGT_SINT) ? arg_p[2].data.sint : 1;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002105
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002106 if (!arg_p[0].data.sint)
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002107 return 0;
2108
2109 word = 0;
2110 inword = 0;
Marcin Deranek9631a282018-04-16 14:30:46 +02002111 if (arg_p[0].data.sint < 0) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002112 end = start = smp->data.u.str.area + smp->data.u.str.data;
2113 while (start > smp->data.u.str.area) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002114 issep = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002115 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2116 if (*(start-1) == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002117 issep = 1;
2118 break;
2119 }
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002120 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002121 if (!inword) {
2122 if (!issep) {
2123 if (word != arg_p[0].data.sint) {
2124 word--;
2125 end = start;
2126 }
2127 inword = 1;
2128 }
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002129 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002130 else if (issep) {
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002131 if (word == arg_p[0].data.sint) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002132 if (count == 1)
2133 goto found;
2134 else if (count > 1)
2135 count--;
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002136 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002137 inword = 0;
2138 }
2139 start--;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002140 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002141 } else {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002142 end = start = smp->data.u.str.area;
2143 while (end - smp->data.u.str.area < smp->data.u.str.data) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002144 issep = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002145 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2146 if (*end == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002147 issep = 1;
2148 break;
2149 }
2150 }
2151 if (!inword) {
2152 if (!issep) {
2153 if (word != arg_p[0].data.sint) {
2154 word++;
2155 start = end;
2156 }
2157 inword = 1;
2158 }
2159 }
2160 else if (issep) {
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002161 if (word == arg_p[0].data.sint) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002162 if (count == 1)
2163 goto found;
2164 else if (count > 1)
2165 count--;
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002166 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002167 inword = 0;
2168 }
2169 end++;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002170 }
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002171 }
2172
2173 /* Field not found */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002174 if (word != arg_p[0].data.sint) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002175 smp->data.u.str.data = 0;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002176 return 1;
2177 }
2178found:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002179 smp->data.u.str.data = end - start;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002180 /* If ret string is len 0, no need to
2181 change pointers or to update size */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002182 if (!smp->data.u.str.data)
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002183 return 1;
2184
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002185 smp->data.u.str.area = start;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002186
2187 /* Compute remaining size if needed
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002188 Note: smp->data.u.str.size cannot be set to 0 */
2189 if (smp->data.u.str.size)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002190 smp->data.u.str.size -= start - smp->data.u.str.area;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002191
2192 return 1;
2193}
2194
Willy Tarreau7eda8492015-01-20 19:47:06 +01002195static int sample_conv_regsub_check(struct arg *args, struct sample_conv *conv,
2196 const char *file, int line, char **err)
2197{
2198 struct arg *arg = args;
2199 char *p;
2200 int len;
2201
2202 /* arg0 is a regex, it uses type_flag for ICASE and global match */
2203 arg[0].type_flags = 0;
2204
2205 if (arg[2].type != ARGT_STR)
2206 return 1;
2207
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002208 p = arg[2].data.str.area;
2209 len = arg[2].data.str.data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002210 while (len) {
2211 if (*p == 'i') {
2212 arg[0].type_flags |= ARGF_REG_ICASE;
2213 }
2214 else if (*p == 'g') {
2215 arg[0].type_flags |= ARGF_REG_GLOB;
2216 }
2217 else {
2218 memprintf(err, "invalid regex flag '%c', only 'i' and 'g' are supported", *p);
2219 return 0;
2220 }
2221 p++;
2222 len--;
2223 }
2224 return 1;
2225}
2226
2227/* This sample function is designed to do the equivalent of s/match/replace/ on
2228 * the input string. It applies a regex and restarts from the last matched
2229 * location until nothing matches anymore. First arg is the regex to apply to
2230 * the input string, second arg is the replacement expression.
2231 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002232static int sample_conv_regsub(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau7eda8492015-01-20 19:47:06 +01002233{
2234 char *start, *end;
2235 struct my_regex *reg = arg_p[0].data.reg;
2236 regmatch_t pmatch[MAX_MATCH];
Willy Tarreau83061a82018-07-13 11:56:34 +02002237 struct buffer *trash = get_trash_chunk();
Willy Tarreau7eda8492015-01-20 19:47:06 +01002238 int flag, max;
2239 int found;
2240
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002241 start = smp->data.u.str.area;
2242 end = start + smp->data.u.str.data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002243
2244 flag = 0;
2245 while (1) {
2246 /* check for last round which is used to copy remaining parts
2247 * when not running in global replacement mode.
2248 */
2249 found = 0;
2250 if ((arg_p[0].type_flags & ARGF_REG_GLOB) || !(flag & REG_NOTBOL)) {
2251 /* Note: we can have start == end on empty strings or at the end */
2252 found = regex_exec_match2(reg, start, end - start, MAX_MATCH, pmatch, flag);
2253 }
2254
2255 if (!found)
2256 pmatch[0].rm_so = end - start;
2257
2258 /* copy the heading non-matching part (which may also be the tail if nothing matches) */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002259 max = trash->size - trash->data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002260 if (max && pmatch[0].rm_so > 0) {
2261 if (max > pmatch[0].rm_so)
2262 max = pmatch[0].rm_so;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002263 memcpy(trash->area + trash->data, start, max);
2264 trash->data += max;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002265 }
2266
2267 if (!found)
2268 break;
2269
2270 /* replace the matching part */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002271 max = trash->size - trash->data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002272 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002273 if (max > arg_p[1].data.str.data)
2274 max = arg_p[1].data.str.data;
2275 memcpy(trash->area + trash->data,
2276 arg_p[1].data.str.area, max);
2277 trash->data += max;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002278 }
2279
2280 /* stop here if we're done with this string */
2281 if (start >= end)
2282 break;
2283
2284 /* We have a special case for matches of length 0 (eg: "x*y*").
2285 * These ones are considered to match in front of a character,
2286 * so we have to copy that character and skip to the next one.
2287 */
2288 if (!pmatch[0].rm_eo) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002289 if (trash->data < trash->size)
2290 trash->area[trash->data++] = start[pmatch[0].rm_eo];
Willy Tarreau7eda8492015-01-20 19:47:06 +01002291 pmatch[0].rm_eo++;
2292 }
2293
2294 start += pmatch[0].rm_eo;
2295 flag |= REG_NOTBOL;
2296 }
2297
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002298 smp->data.u.str = *trash;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002299 return 1;
2300}
2301
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002302/* This function check an operator entry. It expects a string.
2303 * The string can be an integer or a variable name.
2304 */
2305static int check_operator(struct arg *args, struct sample_conv *conv,
2306 const char *file, int line, char **err)
2307{
2308 const char *str;
2309 const char *end;
2310
2311 /* Try to decode a variable. */
2312 if (vars_check_arg(&args[0], NULL))
2313 return 1;
2314
2315 /* Try to convert an integer */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002316 str = args[0].data.str.area;
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002317 end = str + strlen(str);
2318 args[0].data.sint = read_int64(&str, end);
2319 if (*str != '\0') {
2320 memprintf(err, "expects an integer or a variable name");
2321 return 0;
2322 }
2323 args[0].type = ARGT_SINT;
2324 return 1;
2325}
2326
Willy Tarreau6204cd92016-03-10 16:33:04 +01002327/* This function returns a sample struct filled with an arg content.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002328 * If the arg contain an integer, the integer is returned in the
2329 * sample. If the arg contains a variable descriptor, it returns the
2330 * variable value.
2331 *
2332 * This function returns 0 if an error occurs, otherwise it returns 1.
2333 */
Willy Tarreau6204cd92016-03-10 16:33:04 +01002334static inline int sample_conv_var2smp(const struct arg *arg, struct sample *smp)
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002335{
2336 switch (arg->type) {
2337 case ARGT_SINT:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002338 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002339 smp->data.u.sint = arg->data.sint;
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002340 return 1;
2341 case ARGT_VAR:
Willy Tarreau6204cd92016-03-10 16:33:04 +01002342 if (!vars_get_by_desc(&arg->data.var, smp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002343 return 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002344 if (!sample_casts[smp->data.type][SMP_T_SINT])
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002345 return 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002346 if (!sample_casts[smp->data.type][SMP_T_SINT](smp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002347 return 0;
2348 return 1;
2349 default:
2350 return 0;
2351 }
2352}
2353
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002354/* Takes a SINT on input, applies a binary twos complement and returns the SINT
Willy Tarreau97707872015-01-27 15:12:13 +01002355 * result.
2356 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002357static int sample_conv_binary_cpl(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002358{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002359 smp->data.u.sint = ~smp->data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002360 return 1;
2361}
2362
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002363/* Takes a SINT on input, applies a binary "and" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002364 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002365 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002366static int sample_conv_binary_and(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002367{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002368 struct sample tmp;
2369
Willy Tarreau7560dd42016-03-10 16:28:58 +01002370 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002371 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002372 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002373 smp->data.u.sint &= tmp.data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002374 return 1;
2375}
2376
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002377/* Takes a SINT on input, applies a binary "or" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002378 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002379 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002380static int sample_conv_binary_or(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002381{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002382 struct sample tmp;
2383
Willy Tarreau7560dd42016-03-10 16:28:58 +01002384 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002385 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002386 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002387 smp->data.u.sint |= tmp.data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002388 return 1;
2389}
2390
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002391/* Takes a SINT on input, applies a binary "xor" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002392 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002393 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002394static int sample_conv_binary_xor(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002395{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002396 struct sample tmp;
2397
Willy Tarreau7560dd42016-03-10 16:28:58 +01002398 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002399 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002400 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002401 smp->data.u.sint ^= tmp.data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002402 return 1;
2403}
2404
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002405static inline long long int arith_add(long long int a, long long int b)
2406{
2407 /* Prevent overflow and makes capped calculus.
2408 * We must ensure that the check calculus doesn't
2409 * exceed the signed 64 bits limits.
2410 *
2411 * +----------+----------+
2412 * | a<0 | a>=0 |
2413 * +------+----------+----------+
2414 * | b<0 | MIN-a>b | no check |
2415 * +------+----------+----------+
2416 * | b>=0 | no check | MAX-a<b |
2417 * +------+----------+----------+
2418 */
2419 if ((a ^ b) >= 0) {
2420 /* signs are differents. */
2421 if (a < 0) {
2422 if (LLONG_MIN - a > b)
2423 return LLONG_MIN;
2424 }
2425 if (LLONG_MAX - a < b)
2426 return LLONG_MAX;
2427 }
2428 return a + b;
2429}
2430
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002431/* Takes a SINT on input, applies an arithmetic "add" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002432 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002433 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002434static int sample_conv_arith_add(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002435{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002436 struct sample tmp;
2437
Willy Tarreau7560dd42016-03-10 16:28:58 +01002438 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002439 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002440 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002441 smp->data.u.sint = arith_add(smp->data.u.sint, tmp.data.u.sint);
Willy Tarreau97707872015-01-27 15:12:13 +01002442 return 1;
2443}
2444
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002445/* Takes a SINT on input, applies an arithmetic "sub" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002446 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002447 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002448static int sample_conv_arith_sub(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002449 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002450{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002451 struct sample tmp;
2452
Willy Tarreau7560dd42016-03-10 16:28:58 +01002453 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002454 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002455 return 0;
2456
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002457 /* We cannot represent -LLONG_MIN because abs(LLONG_MIN) is greater
2458 * than abs(LLONG_MAX). So, the following code use LLONG_MAX in place
2459 * of -LLONG_MIN and correct the result.
2460 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002461 if (tmp.data.u.sint == LLONG_MIN) {
2462 smp->data.u.sint = arith_add(smp->data.u.sint, LLONG_MAX);
2463 if (smp->data.u.sint < LLONG_MAX)
2464 smp->data.u.sint++;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002465 return 1;
2466 }
2467
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002468 /* standard subtraction: we use the "add" function and negate
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002469 * the second operand.
2470 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002471 smp->data.u.sint = arith_add(smp->data.u.sint, -tmp.data.u.sint);
Willy Tarreau97707872015-01-27 15:12:13 +01002472 return 1;
2473}
2474
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002475/* Takes a SINT on input, applies an arithmetic "mul" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002476 * arg_p or in the variable described in arg_p, and returns the SINT result.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002477 * If the result makes an overflow, then the largest possible quantity is
2478 * returned.
Willy Tarreau97707872015-01-27 15:12:13 +01002479 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002480static int sample_conv_arith_mul(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002481 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002482{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002483 struct sample tmp;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002484 long long int c;
2485
Willy Tarreau7560dd42016-03-10 16:28:58 +01002486 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002487 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002488 return 0;
2489
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002490 /* prevent divide by 0 during the check */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002491 if (!smp->data.u.sint || !tmp.data.u.sint) {
2492 smp->data.u.sint = 0;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002493 return 1;
2494 }
2495
2496 /* The multiply between LLONG_MIN and -1 returns a
2497 * "floting point exception".
2498 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002499 if (smp->data.u.sint == LLONG_MIN && tmp.data.u.sint == -1) {
2500 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002501 return 1;
2502 }
2503
2504 /* execute standard multiplication. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002505 c = smp->data.u.sint * tmp.data.u.sint;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002506
2507 /* check for overflow and makes capped multiply. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002508 if (smp->data.u.sint != c / tmp.data.u.sint) {
2509 if ((smp->data.u.sint < 0) == (tmp.data.u.sint < 0)) {
2510 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002511 return 1;
2512 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002513 smp->data.u.sint = LLONG_MIN;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002514 return 1;
2515 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002516 smp->data.u.sint = c;
Willy Tarreau97707872015-01-27 15:12:13 +01002517 return 1;
2518}
2519
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002520/* Takes a SINT on input, applies an arithmetic "div" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002521 * arg_p or in the variable described in arg_p, and returns the SINT result.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002522 * If arg_p makes the result overflow, then the largest possible quantity is
2523 * returned.
Willy Tarreau97707872015-01-27 15:12:13 +01002524 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002525static int sample_conv_arith_div(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002526 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002527{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002528 struct sample tmp;
2529
Willy Tarreau7560dd42016-03-10 16:28:58 +01002530 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002531 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002532 return 0;
2533
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002534 if (tmp.data.u.sint) {
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002535 /* The divide between LLONG_MIN and -1 returns a
2536 * "floting point exception".
2537 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002538 if (smp->data.u.sint == LLONG_MIN && tmp.data.u.sint == -1) {
2539 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002540 return 1;
2541 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002542 smp->data.u.sint /= tmp.data.u.sint;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002543 return 1;
2544 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002545 smp->data.u.sint = LLONG_MAX;
Willy Tarreau97707872015-01-27 15:12:13 +01002546 return 1;
2547}
2548
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002549/* Takes a SINT on input, applies an arithmetic "mod" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002550 * arg_p or in the variable described in arg_p, and returns the SINT result.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002551 * If arg_p makes the result overflow, then 0 is returned.
Willy Tarreau97707872015-01-27 15:12:13 +01002552 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002553static int sample_conv_arith_mod(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002554 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002555{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002556 struct sample tmp;
2557
Willy Tarreau7560dd42016-03-10 16:28:58 +01002558 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002559 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002560 return 0;
2561
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002562 if (tmp.data.u.sint) {
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002563 /* The divide between LLONG_MIN and -1 returns a
2564 * "floting point exception".
2565 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002566 if (smp->data.u.sint == LLONG_MIN && tmp.data.u.sint == -1) {
2567 smp->data.u.sint = 0;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002568 return 1;
2569 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002570 smp->data.u.sint %= tmp.data.u.sint;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002571 return 1;
2572 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002573 smp->data.u.sint = 0;
Willy Tarreau97707872015-01-27 15:12:13 +01002574 return 1;
2575}
2576
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002577/* Takes an SINT on input, applies an arithmetic "neg" and returns the SINT
Willy Tarreau97707872015-01-27 15:12:13 +01002578 * result.
2579 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002580static int sample_conv_arith_neg(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002581 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002582{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002583 if (smp->data.u.sint == LLONG_MIN)
2584 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002585 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002586 smp->data.u.sint = -smp->data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002587 return 1;
2588}
2589
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002590/* Takes a SINT on input, returns true is the value is non-null, otherwise
Willy Tarreau97707872015-01-27 15:12:13 +01002591 * false. The output is a BOOL.
2592 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002593static int sample_conv_arith_bool(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002594 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002595{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002596 smp->data.u.sint = !!smp->data.u.sint;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002597 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002598 return 1;
2599}
2600
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002601/* Takes a SINT on input, returns false is the value is non-null, otherwise
Willy Tarreau97707872015-01-27 15:12:13 +01002602 * truee. The output is a BOOL.
2603 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002604static int sample_conv_arith_not(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002605 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002606{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002607 smp->data.u.sint = !smp->data.u.sint;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002608 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002609 return 1;
2610}
2611
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002612/* Takes a SINT on input, returns true is the value is odd, otherwise false.
Willy Tarreau97707872015-01-27 15:12:13 +01002613 * The output is a BOOL.
2614 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002615static int sample_conv_arith_odd(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002616 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002617{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002618 smp->data.u.sint = smp->data.u.sint & 1;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002619 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002620 return 1;
2621}
2622
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002623/* Takes a SINT on input, returns true is the value is even, otherwise false.
Willy Tarreau97707872015-01-27 15:12:13 +01002624 * The output is a BOOL.
2625 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002626static int sample_conv_arith_even(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002627 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002628{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002629 smp->data.u.sint = !(smp->data.u.sint & 1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002630 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002631 return 1;
2632}
2633
Willy Tarreau280f42b2018-02-19 15:34:12 +01002634/* appends an optional const string, an optional variable contents and another
2635 * optional const string to an existing string.
2636 */
2637static int sample_conv_concat(const struct arg *arg_p, struct sample *smp, void *private)
2638{
Willy Tarreau83061a82018-07-13 11:56:34 +02002639 struct buffer *trash;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002640 struct sample tmp;
2641 int max;
2642
2643 trash = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002644 trash->data = smp->data.u.str.data;
2645 if (trash->data > trash->size - 1)
2646 trash->data = trash->size - 1;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002647
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002648 memcpy(trash->area, smp->data.u.str.area, trash->data);
2649 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002650
2651 /* append first string */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002652 max = arg_p[0].data.str.data;
2653 if (max > trash->size - 1 - trash->data)
2654 max = trash->size - 1 - trash->data;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002655
2656 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002657 memcpy(trash->area + trash->data, arg_p[0].data.str.area, max);
2658 trash->data += max;
2659 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002660 }
2661
2662 /* append second string (variable) if it's found and we can turn it
2663 * into a string.
2664 */
2665 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
2666 if (arg_p[1].type == ARGT_VAR && vars_get_by_desc(&arg_p[1].data.var, &tmp) &&
2667 (sample_casts[tmp.data.type][SMP_T_STR] == c_none ||
2668 sample_casts[tmp.data.type][SMP_T_STR](&tmp))) {
2669
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002670 max = tmp.data.u.str.data;
2671 if (max > trash->size - 1 - trash->data)
2672 max = trash->size - 1 - trash->data;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002673
2674 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002675 memcpy(trash->area + trash->data, tmp.data.u.str.area,
2676 max);
2677 trash->data += max;
2678 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002679 }
2680 }
2681
2682 /* append third string */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002683 max = arg_p[2].data.str.data;
2684 if (max > trash->size - 1 - trash->data)
2685 max = trash->size - 1 - trash->data;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002686
2687 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002688 memcpy(trash->area + trash->data, arg_p[2].data.str.area, max);
2689 trash->data += max;
2690 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002691 }
2692
2693 smp->data.u.str = *trash;
2694 smp->data.type = SMP_T_STR;
2695 return 1;
2696}
2697
2698/* This function checks the "concat" converter's arguments and extracts the
2699 * variable name and its scope.
2700 */
2701static int smp_check_concat(struct arg *args, struct sample_conv *conv,
2702 const char *file, int line, char **err)
2703{
2704 /* Try to decode a variable. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002705 if (args[1].data.str.data > 0 && !vars_check_arg(&args[1], NULL)) {
2706 memprintf(err, "failed to register variable name '%s'",
2707 args[1].data.str.area);
Willy Tarreau280f42b2018-02-19 15:34:12 +01002708 return 0;
2709 }
2710 return 1;
2711}
2712
Tim Duesterhusca097c12018-04-27 21:18:45 +02002713/* compares string with a variable containing a string. Return value
2714 * is compatible with strcmp(3)'s return value.
2715 */
2716static int sample_conv_strcmp(const struct arg *arg_p, struct sample *smp, void *private)
2717{
2718 struct sample tmp;
2719 int max, result;
2720
2721 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
2722 if (arg_p[0].type != ARGT_VAR)
2723 return 0;
2724 if (!vars_get_by_desc(&arg_p[0].data.var, &tmp))
2725 return 0;
2726 if (!sample_casts[tmp.data.type][SMP_T_STR](&tmp))
2727 return 0;
2728
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002729 max = MIN(smp->data.u.str.data, tmp.data.u.str.data);
2730 result = strncmp(smp->data.u.str.area, tmp.data.u.str.area, max);
Tim Duesterhusca097c12018-04-27 21:18:45 +02002731 if (result == 0) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002732 if (smp->data.u.str.data != tmp.data.u.str.data) {
2733 if (smp->data.u.str.data < tmp.data.u.str.data) {
Tim Duesterhusca097c12018-04-27 21:18:45 +02002734 result = -1;
2735 }
2736 else {
2737 result = 1;
2738 }
2739 }
2740 }
2741
2742 smp->data.u.sint = result;
2743 smp->data.type = SMP_T_SINT;
2744 return 1;
2745}
2746
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002747#define GRPC_MSG_COMPRESS_FLAG_SZ 1 /* 1 byte */
2748#define GRPC_MSG_LENGTH_SZ 4 /* 4 bytes */
2749#define GRPC_MSG_HEADER_SZ (GRPC_MSG_COMPRESS_FLAG_SZ + GRPC_MSG_LENGTH_SZ)
2750
2751/*
2752 * Extract the field value of an input binary sample. Takes a mandatory argument:
2753 * the protocol buffers field identifier (dotted notation) internally represented
2754 * as an array of unsigned integers and its size.
2755 * Return 1 if the field was found, 0 if not.
2756 */
2757static int sample_conv_ungrpc(const struct arg *arg_p, struct sample *smp, void *private)
2758{
2759 unsigned char *pos;
2760 size_t grpc_left;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002761
2762 pos = (unsigned char *)smp->data.u.str.area;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002763 grpc_left = smp->data.u.str.data;
2764
Frédéric Lécaille7c93e882019-03-04 07:33:41 +01002765 while (grpc_left > GRPC_MSG_HEADER_SZ) {
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002766 size_t grpc_msg_len, left;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002767
2768 grpc_msg_len = left = ntohl(*(uint32_t *)(pos + GRPC_MSG_COMPRESS_FLAG_SZ));
2769
2770 pos += GRPC_MSG_HEADER_SZ;
2771 grpc_left -= GRPC_MSG_HEADER_SZ;
2772
2773 if (grpc_left < left)
2774 return 0;
2775
Frédéric Lécaille5f33f852019-03-06 08:03:44 +01002776 if (protobuf_field_lookup(arg_p, smp, &pos, &left))
2777 return 1;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002778
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002779 grpc_left -= grpc_msg_len;
2780 }
2781
2782 return 0;
2783}
2784
Frédéric Lécaillebfe61382019-03-06 14:34:36 +01002785static int sample_conv_protobuf(const struct arg *arg_p, struct sample *smp, void *private)
2786{
2787 unsigned char *pos;
2788 size_t left;
2789
2790 pos = (unsigned char *)smp->data.u.str.area;
2791 left = smp->data.u.str.data;
2792
2793 return protobuf_field_lookup(arg_p, smp, &pos, &left);
2794}
2795
2796static int sample_conv_protobuf_check(struct arg *args, struct sample_conv *conv,
2797 const char *file, int line, char **err)
Frédéric Lécaille756d97f2019-03-04 19:03:48 +01002798{
2799 if (!args[1].type) {
2800 args[1].type = ARGT_SINT;
2801 args[1].data.sint = PBUF_T_BINARY;
2802 }
2803 else {
2804 int pbuf_type;
2805
2806 pbuf_type = protobuf_type(args[1].data.str.area);
2807 if (pbuf_type == -1) {
2808 memprintf(err, "Wrong protocol buffer type '%s'", args[1].data.str.area);
2809 return 0;
2810 }
2811
2812 args[1].type = ARGT_SINT;
2813 args[1].data.sint = pbuf_type;
2814 }
2815
2816 return 1;
2817}
2818
Tim Duesterhusca097c12018-04-27 21:18:45 +02002819/* This function checks the "strcmp" converter's arguments and extracts the
2820 * variable name and its scope.
2821 */
2822static int smp_check_strcmp(struct arg *args, struct sample_conv *conv,
2823 const char *file, int line, char **err)
2824{
2825 /* Try to decode a variable. */
2826 if (vars_check_arg(&args[0], NULL))
2827 return 1;
2828
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002829 memprintf(err, "failed to register variable name '%s'",
2830 args[0].data.str.area);
Tim Duesterhusca097c12018-04-27 21:18:45 +02002831 return 0;
2832}
2833
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002834/************************************************************************/
2835/* All supported sample fetch functions must be declared here */
2836/************************************************************************/
2837
2838/* force TRUE to be returned at the fetch level */
2839static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002840smp_fetch_true(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002841{
Willy Tarreau280f42b2018-02-19 15:34:12 +01002842 if (!smp_make_rw(smp))
2843 return 0;
2844
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002845 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002846 smp->data.u.sint = 1;
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002847 return 1;
2848}
2849
2850/* force FALSE to be returned at the fetch level */
2851static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002852smp_fetch_false(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002853{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002854 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002855 smp->data.u.sint = 0;
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002856 return 1;
2857}
2858
2859/* retrieve environment variable $1 as a string */
2860static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002861smp_fetch_env(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002862{
2863 char *env;
2864
2865 if (!args || args[0].type != ARGT_STR)
2866 return 0;
2867
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002868 env = getenv(args[0].data.str.area);
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002869 if (!env)
2870 return 0;
2871
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002872 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01002873 smp->flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002874 smp->data.u.str.area = env;
2875 smp->data.u.str.data = strlen(env);
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002876 return 1;
2877}
2878
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002879/* retrieve the current local date in epoch time, and applies an optional offset
2880 * of args[0] seconds.
2881 */
2882static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002883smp_fetch_date(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002884{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002885 smp->data.u.sint = date.tv_sec;
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002886
2887 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002888 if (args && args[0].type == ARGT_SINT)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002889 smp->data.u.sint += args[0].data.sint;
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002890
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002891 smp->data.type = SMP_T_SINT;
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002892 smp->flags |= SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
2893 return 1;
2894}
2895
Etienne Carrierea792a0a2018-01-17 13:43:24 +01002896/* retrieve the current microsecond part of the date */
2897static int
2898smp_fetch_date_us(const struct arg *args, struct sample *smp, const char *kw, void *private)
2899{
2900 smp->data.u.sint = date.tv_usec;
2901 smp->data.type = SMP_T_SINT;
2902 smp->flags |= SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
2903 return 1;
2904}
2905
2906
Nenad Merdanovic807a6e72017-03-12 22:00:00 +01002907/* returns the hostname */
2908static int
2909smp_fetch_hostname(const struct arg *args, struct sample *smp, const char *kw, void *private)
2910{
2911 smp->data.type = SMP_T_STR;
2912 smp->flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002913 smp->data.u.str.area = hostname;
2914 smp->data.u.str.data = strlen(hostname);
Nenad Merdanovic807a6e72017-03-12 22:00:00 +01002915 return 1;
2916}
2917
Willy Tarreau0f30d262014-11-24 16:02:05 +01002918/* returns the number of processes */
2919static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002920smp_fetch_nbproc(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau0f30d262014-11-24 16:02:05 +01002921{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002922 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002923 smp->data.u.sint = global.nbproc;
Willy Tarreau0f30d262014-11-24 16:02:05 +01002924 return 1;
2925}
2926
2927/* returns the number of the current process (between 1 and nbproc */
2928static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002929smp_fetch_proc(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau0f30d262014-11-24 16:02:05 +01002930{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002931 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002932 smp->data.u.sint = relative_pid;
Willy Tarreau0f30d262014-11-24 16:02:05 +01002933 return 1;
2934}
2935
Christopher Faulet34adb2a2017-11-21 21:45:38 +01002936/* returns the number of the current thread (between 1 and nbthread */
2937static int
2938smp_fetch_thread(const struct arg *args, struct sample *smp, const char *kw, void *private)
2939{
2940 smp->data.type = SMP_T_SINT;
2941 smp->data.u.sint = tid;
2942 return 1;
2943}
2944
Willy Tarreau84310e22014-02-14 11:59:04 +01002945/* generate a random 32-bit integer for whatever purpose, with an optional
2946 * range specified in argument.
2947 */
2948static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002949smp_fetch_rand(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau84310e22014-02-14 11:59:04 +01002950{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002951 smp->data.u.sint = random();
Willy Tarreau84310e22014-02-14 11:59:04 +01002952
2953 /* reduce if needed. Don't do a modulo, use all bits! */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002954 if (args && args[0].type == ARGT_SINT)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002955 smp->data.u.sint = (smp->data.u.sint * args[0].data.sint) / ((u64)RAND_MAX+1);
Willy Tarreau84310e22014-02-14 11:59:04 +01002956
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002957 smp->data.type = SMP_T_SINT;
Willy Tarreau84310e22014-02-14 11:59:04 +01002958 smp->flags |= SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
2959 return 1;
2960}
2961
Willy Tarreau0f30d262014-11-24 16:02:05 +01002962/* returns true if the current process is stopping */
2963static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002964smp_fetch_stopping(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau0f30d262014-11-24 16:02:05 +01002965{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002966 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002967 smp->data.u.sint = stopping;
Willy Tarreau0f30d262014-11-24 16:02:05 +01002968 return 1;
2969}
2970
Willy Tarreau70fe9442018-11-22 16:07:39 +01002971/* returns the number of calls of the current stream's process_stream() */
2972static int
2973smp_fetch_cpu_calls(const struct arg *args, struct sample *smp, const char *kw, void *private)
2974{
2975 smp->data.type = SMP_T_SINT;
2976 smp->data.u.sint = smp->strm->task->calls;
2977 return 1;
2978}
2979
2980/* returns the average number of nanoseconds spent processing the stream per call */
2981static int
2982smp_fetch_cpu_ns_avg(const struct arg *args, struct sample *smp, const char *kw, void *private)
2983{
2984 smp->data.type = SMP_T_SINT;
2985 smp->data.u.sint = smp->strm->task->calls ? smp->strm->task->cpu_time / smp->strm->task->calls : 0;
2986 return 1;
2987}
2988
2989/* returns the total number of nanoseconds spent processing the stream */
2990static int
2991smp_fetch_cpu_ns_tot(const struct arg *args, struct sample *smp, const char *kw, void *private)
2992{
2993 smp->data.type = SMP_T_SINT;
2994 smp->data.u.sint = smp->strm->task->cpu_time;
2995 return 1;
2996}
2997
2998/* returns the average number of nanoseconds per call spent waiting for other tasks to be processed */
2999static int
3000smp_fetch_lat_ns_avg(const struct arg *args, struct sample *smp, const char *kw, void *private)
3001{
3002 smp->data.type = SMP_T_SINT;
3003 smp->data.u.sint = smp->strm->task->calls ? smp->strm->task->lat_time / smp->strm->task->calls : 0;
3004 return 1;
3005}
3006
3007/* returns the total number of nanoseconds per call spent waiting for other tasks to be processed */
3008static int
3009smp_fetch_lat_ns_tot(const struct arg *args, struct sample *smp, const char *kw, void *private)
3010{
3011 smp->data.type = SMP_T_SINT;
3012 smp->data.u.sint = smp->strm->task->lat_time;
3013 return 1;
3014}
3015
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003016static int smp_fetch_const_str(const struct arg *args, struct sample *smp, const char *kw, void *private)
3017{
3018 smp->flags |= SMP_F_CONST;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003019 smp->data.type = SMP_T_STR;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003020 smp->data.u.str.area = args[0].data.str.area;
3021 smp->data.u.str.data = args[0].data.str.data;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003022 return 1;
3023}
3024
3025static int smp_check_const_bool(struct arg *args, char **err)
3026{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003027 if (strcasecmp(args[0].data.str.area, "true") == 0 ||
3028 strcasecmp(args[0].data.str.area, "1") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003029 args[0].type = ARGT_SINT;
3030 args[0].data.sint = 1;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003031 return 1;
3032 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003033 if (strcasecmp(args[0].data.str.area, "false") == 0 ||
3034 strcasecmp(args[0].data.str.area, "0") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003035 args[0].type = ARGT_SINT;
3036 args[0].data.sint = 0;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003037 return 1;
3038 }
3039 memprintf(err, "Expects 'true', 'false', '0' or '1'");
3040 return 0;
3041}
3042
3043static int smp_fetch_const_bool(const struct arg *args, struct sample *smp, const char *kw, void *private)
3044{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003045 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003046 smp->data.u.sint = args[0].data.sint;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003047 return 1;
3048}
3049
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003050static int smp_fetch_const_int(const struct arg *args, struct sample *smp, const char *kw, void *private)
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003051{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003052 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003053 smp->data.u.sint = args[0].data.sint;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003054 return 1;
3055}
3056
3057static int smp_fetch_const_ipv4(const struct arg *args, struct sample *smp, const char *kw, void *private)
3058{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003059 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003060 smp->data.u.ipv4 = args[0].data.ipv4;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003061 return 1;
3062}
3063
3064static int smp_fetch_const_ipv6(const struct arg *args, struct sample *smp, const char *kw, void *private)
3065{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003066 smp->data.type = SMP_T_IPV6;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003067 smp->data.u.ipv6 = args[0].data.ipv6;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003068 return 1;
3069}
3070
3071static int smp_check_const_bin(struct arg *args, char **err)
3072{
David Carlier64a16ab2016-04-08 10:37:02 +01003073 char *binstr = NULL;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003074 int binstrlen;
3075
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003076 if (!parse_binary(args[0].data.str.area, &binstr, &binstrlen, err))
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003077 return 0;
3078 args[0].type = ARGT_STR;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003079 args[0].data.str.area = binstr;
3080 args[0].data.str.data = binstrlen;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003081 return 1;
3082}
3083
3084static int smp_fetch_const_bin(const struct arg *args, struct sample *smp, const char *kw, void *private)
3085{
3086 smp->flags |= SMP_F_CONST;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003087 smp->data.type = SMP_T_BIN;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003088 smp->data.u.str.area = args[0].data.str.area;
3089 smp->data.u.str.data = args[0].data.str.data;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003090 return 1;
3091}
3092
3093static int smp_check_const_meth(struct arg *args, char **err)
3094{
3095 enum http_meth_t meth;
3096 int i;
3097
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003098 meth = find_http_meth(args[0].data.str.area, args[0].data.str.data);
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003099 if (meth != HTTP_METH_OTHER) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003100 args[0].type = ARGT_SINT;
3101 args[0].data.sint = meth;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003102 } else {
3103 /* Check method avalaibility. A methos is a token defined as :
3104 * tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." /
3105 * "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
3106 * token = 1*tchar
3107 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003108 for (i = 0; i < args[0].data.str.data; i++) {
3109 if (!HTTP_IS_TOKEN(args[0].data.str.area[i])) {
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003110 memprintf(err, "expects valid method.");
3111 return 0;
3112 }
3113 }
3114 }
3115 return 1;
3116}
3117
3118static int smp_fetch_const_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
3119{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003120 smp->data.type = SMP_T_METH;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003121 if (args[0].type == ARGT_SINT) {
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003122 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003123 smp->data.u.meth.meth = args[0].data.sint;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003124 smp->data.u.meth.str.area = "";
3125 smp->data.u.meth.str.data = 0;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003126 } else {
3127 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003128 smp->data.u.meth.meth = HTTP_METH_OTHER;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003129 smp->data.u.meth.str.area = args[0].data.str.area;
3130 smp->data.u.meth.str.data = args[0].data.str.data;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003131 }
3132 return 1;
3133}
3134
Willy Tarreau5b8ad222013-07-25 12:17:57 +02003135/* Note: must not be declared <const> as its list will be overwritten.
3136 * Note: fetches that may return multiple types must be declared as the lowest
3137 * common denominator, the type that can be casted into all other ones. For
3138 * instance IPv4/IPv6 must be declared IPv4.
3139 */
3140static struct sample_fetch_kw_list smp_kws = {ILH, {
3141 { "always_false", smp_fetch_false, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
3142 { "always_true", smp_fetch_true, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01003143 { "env", smp_fetch_env, ARG1(1,STR), NULL, SMP_T_STR, SMP_USE_INTRN },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003144 { "date", smp_fetch_date, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_USE_INTRN },
Etienne Carrierea792a0a2018-01-17 13:43:24 +01003145 { "date_us", smp_fetch_date_us, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Nenad Merdanovic807a6e72017-03-12 22:00:00 +01003146 { "hostname", smp_fetch_hostname, 0, NULL, SMP_T_STR, SMP_USE_INTRN },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003147 { "nbproc", smp_fetch_nbproc,0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3148 { "proc", smp_fetch_proc, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Christopher Faulet34adb2a2017-11-21 21:45:38 +01003149 { "thread", smp_fetch_thread, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003150 { "rand", smp_fetch_rand, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_USE_INTRN },
Willy Tarreau0f30d262014-11-24 16:02:05 +01003151 { "stopping", smp_fetch_stopping, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
Willy Tarreau70fe9442018-11-22 16:07:39 +01003152 { "stopping", smp_fetch_stopping, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
3153
3154 { "cpu_calls", smp_fetch_cpu_calls, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3155 { "cpu_ns_avg", smp_fetch_cpu_ns_avg, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3156 { "cpu_ns_tot", smp_fetch_cpu_ns_tot, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3157 { "lat_ns_avg", smp_fetch_lat_ns_avg, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3158 { "lat_ns_tot", smp_fetch_lat_ns_tot, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003159
3160 { "str", smp_fetch_const_str, ARG1(1,STR), NULL , SMP_T_STR, SMP_USE_INTRN },
3161 { "bool", smp_fetch_const_bool, ARG1(1,STR), smp_check_const_bool, SMP_T_BOOL, SMP_USE_INTRN },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003162 { "int", smp_fetch_const_int, ARG1(1,SINT), NULL , SMP_T_SINT, SMP_USE_INTRN },
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003163 { "ipv4", smp_fetch_const_ipv4, ARG1(1,IPV4), NULL , SMP_T_IPV4, SMP_USE_INTRN },
3164 { "ipv6", smp_fetch_const_ipv6, ARG1(1,IPV6), NULL , SMP_T_IPV6, SMP_USE_INTRN },
3165 { "bin", smp_fetch_const_bin, ARG1(1,STR), smp_check_const_bin , SMP_T_BIN, SMP_USE_INTRN },
3166 { "meth", smp_fetch_const_meth, ARG1(1,STR), smp_check_const_meth, SMP_T_METH, SMP_USE_INTRN },
3167
Willy Tarreau5b8ad222013-07-25 12:17:57 +02003168 { /* END */ },
3169}};
3170
Willy Tarreau0108d902018-11-25 19:14:37 +01003171INITCALL1(STG_REGISTER, sample_register_fetches, &smp_kws);
3172
Emeric Brun107ca302010-01-04 16:16:05 +01003173/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +02003174static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER9687c772015-05-07 15:46:29 +02003175#ifdef DEBUG_EXPR
3176 { "debug", sample_conv_debug, 0, NULL, SMP_T_ANY, SMP_T_ANY },
3177#endif
3178
Holger Just1bfc24b2017-05-06 00:56:53 +02003179 { "b64dec", sample_conv_base642bin,0, NULL, SMP_T_STR, SMP_T_BIN },
Emeric Brun53d1a982014-04-30 18:21:37 +02003180 { "base64", sample_conv_bin2base64,0, NULL, SMP_T_BIN, SMP_T_STR },
Willy Tarreau12785782012-04-27 21:37:17 +02003181 { "upper", sample_conv_str2upper, 0, NULL, SMP_T_STR, SMP_T_STR },
3182 { "lower", sample_conv_str2lower, 0, NULL, SMP_T_STR, SMP_T_STR },
Willy Tarreau60a2ee72017-12-15 07:13:48 +01003183 { "length", sample_conv_length, 0, NULL, SMP_T_STR, SMP_T_SINT },
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01003184 { "hex", sample_conv_bin2hex, 0, NULL, SMP_T_BIN, SMP_T_STR },
Dragan Dosen3f957b22017-10-24 09:27:34 +02003185 { "hex2i", sample_conv_hex2int, 0, NULL, SMP_T_STR, SMP_T_SINT },
Tim Duesterhus1478aa72018-01-25 16:24:51 +01003186 { "ipmask", sample_conv_ipmask, ARG2(1,MSK4,MSK6), NULL, SMP_T_ADDR, SMP_T_IPV4 },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003187 { "ltime", sample_conv_ltime, ARG2(1,STR,SINT), NULL, SMP_T_SINT, SMP_T_STR },
3188 { "utime", sample_conv_utime, ARG2(1,STR,SINT), NULL, SMP_T_SINT, SMP_T_STR },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003189 { "crc32", sample_conv_crc32, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Emmanuel Hocdet50791a72018-03-21 11:19:01 +01003190 { "crc32c", sample_conv_crc32c, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003191 { "djb2", sample_conv_djb2, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
3192 { "sdbm", sample_conv_sdbm, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
3193 { "wt6", sample_conv_wt6, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Thierry FOURNIER01e09742016-12-26 11:46:11 +01003194 { "xxh32", sample_conv_xxh32, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
3195 { "xxh64", sample_conv_xxh64, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02003196 { "json", sample_conv_json, ARG1(1,STR), sample_conv_json_check, SMP_T_STR, SMP_T_STR },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003197 { "bytes", sample_conv_bytes, ARG2(1,SINT,SINT), NULL, SMP_T_BIN, SMP_T_BIN },
Marcin Deranek9631a282018-04-16 14:30:46 +02003198 { "field", sample_conv_field, ARG3(2,SINT,STR,SINT), sample_conv_field_check, SMP_T_STR, SMP_T_STR },
3199 { "word", sample_conv_word, ARG3(2,SINT,STR,SINT), sample_conv_field_check, SMP_T_STR, SMP_T_STR },
Willy Tarreau7eda8492015-01-20 19:47:06 +01003200 { "regsub", sample_conv_regsub, ARG3(2,REG,STR,STR), sample_conv_regsub_check, SMP_T_STR, SMP_T_STR },
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02003201 { "sha1", sample_conv_sha1, 0, NULL, SMP_T_BIN, SMP_T_BIN },
Willy Tarreau280f42b2018-02-19 15:34:12 +01003202 { "concat", sample_conv_concat, ARG3(1,STR,STR,STR), smp_check_concat, SMP_T_STR, SMP_T_STR },
Tim Duesterhusca097c12018-04-27 21:18:45 +02003203 { "strcmp", sample_conv_strcmp, ARG1(1,STR), smp_check_strcmp, SMP_T_STR, SMP_T_SINT },
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01003204
3205 /* gRPC converters. */
Frédéric Lécaillebfe61382019-03-06 14:34:36 +01003206 { "ungrpc", sample_conv_ungrpc, ARG2(1,PBUF_FNUM,STR), sample_conv_protobuf_check, SMP_T_BIN, SMP_T_BIN },
3207 { "protobuf", sample_conv_protobuf, ARG2(1,PBUF_FNUM,STR), sample_conv_protobuf_check, SMP_T_BIN, SMP_T_BIN },
Willy Tarreau97707872015-01-27 15:12:13 +01003208
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02003209 { "and", sample_conv_binary_and, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3210 { "or", sample_conv_binary_or, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3211 { "xor", sample_conv_binary_xor, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3212 { "cpl", sample_conv_binary_cpl, 0, NULL, SMP_T_SINT, SMP_T_SINT },
3213 { "bool", sample_conv_arith_bool, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3214 { "not", sample_conv_arith_not, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3215 { "odd", sample_conv_arith_odd, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3216 { "even", sample_conv_arith_even, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3217 { "add", sample_conv_arith_add, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3218 { "sub", sample_conv_arith_sub, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3219 { "mul", sample_conv_arith_mul, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3220 { "div", sample_conv_arith_div, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3221 { "mod", sample_conv_arith_mod, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3222 { "neg", sample_conv_arith_neg, 0, NULL, SMP_T_SINT, SMP_T_SINT },
Willy Tarreau97707872015-01-27 15:12:13 +01003223
Willy Tarreau9fcb9842012-04-20 14:45:49 +02003224 { NULL, NULL, 0, 0, 0 },
Emeric Brun107ca302010-01-04 16:16:05 +01003225}};
3226
Willy Tarreau0108d902018-11-25 19:14:37 +01003227INITCALL1(STG_REGISTER, sample_register_convs, &sample_conv_kws);