blob: 54f7c9b34853a466db19116863bc98523d1300ca [file] [log] [blame]
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;
1112 char *pname, *sname;
Willy Tarreau46947782015-01-19 19:00:58 +01001113 char *err;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001114
1115 arg = cur->arg;
1116
1117 /* prepare output messages */
1118 conv_pre = conv_pos = conv_ctx = "";
1119 if (cur->conv) {
1120 conv_ctx = cur->conv;
1121 conv_pre = "conversion keyword '";
1122 conv_pos = "' for ";
1123 }
1124
1125 where = "in";
1126 ctx = "sample fetch keyword";
1127 switch (cur->ctx) {
Dragan Dosen0b85ece2015-09-25 19:17:44 +02001128 case ARGC_STK: where = "in stick rule in"; break;
1129 case ARGC_TRK: where = "in tracking rule in"; break;
1130 case ARGC_LOG: where = "in log-format string in"; break;
1131 case ARGC_LOGSD: where = "in log-format-sd string in"; break;
1132 case ARGC_HRQ: where = "in http-request header format string in"; break;
1133 case ARGC_HRS: where = "in http-response header format string in"; break;
1134 case ARGC_UIF: where = "in unique-id-format string in"; break;
1135 case ARGC_RDR: where = "in redirect format string in"; break;
1136 case ARGC_CAP: where = "in capture rule in"; break;
1137 case ARGC_ACL: ctx = "ACL keyword"; break;
1138 case ARGC_SRV: where = "in server directive in"; break;
Christopher Fauletf7e4e7e2016-10-27 22:29:49 +02001139 case ARGC_SPOE: where = "in spoe-message directive in"; break;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001140 }
1141
1142 /* set a few default settings */
1143 px = p;
1144 pname = p->id;
1145
1146 switch (arg->type) {
1147 case ARGT_SRV:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001148 if (!arg->data.str.data) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001149 ha_alert("parsing [%s:%d] : missing server name in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1150 cur->file, cur->line,
1151 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001152 cfgerr++;
1153 continue;
1154 }
1155
1156 /* we support two formats : "bck/srv" and "srv" */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001157 sname = strrchr(arg->data.str.area, '/');
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001158
1159 if (sname) {
1160 *sname++ = '\0';
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001161 pname = arg->data.str.area;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001162
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001163 px = proxy_be_by_name(pname);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001164 if (!px) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001165 ha_alert("parsing [%s:%d] : unable to find proxy '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1166 cur->file, cur->line, pname,
1167 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001168 cfgerr++;
1169 break;
1170 }
1171 }
1172 else
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001173 sname = arg->data.str.area;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001174
1175 srv = findserver(px, sname);
1176 if (!srv) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001177 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",
1178 cur->file, cur->line, sname, pname,
1179 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001180 cfgerr++;
1181 break;
1182 }
1183
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001184 free(arg->data.str.area);
1185 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001186 arg->unresolved = 0;
1187 arg->data.srv = srv;
1188 break;
1189
1190 case ARGT_FE:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001191 if (arg->data.str.data) {
1192 pname = arg->data.str.area;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001193 px = proxy_fe_by_name(pname);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001194 }
1195
1196 if (!px) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001197 ha_alert("parsing [%s:%d] : unable to find frontend '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1198 cur->file, cur->line, pname,
1199 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001200 cfgerr++;
1201 break;
1202 }
1203
1204 if (!(px->cap & PR_CAP_FE)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001205 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",
1206 cur->file, cur->line, pname,
1207 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001208 cfgerr++;
1209 break;
1210 }
1211
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001212 free(arg->data.str.area);
1213 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001214 arg->unresolved = 0;
1215 arg->data.prx = px;
1216 break;
1217
1218 case ARGT_BE:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001219 if (arg->data.str.data) {
1220 pname = arg->data.str.area;
Willy Tarreau9e0bb102015-05-26 11:24:42 +02001221 px = proxy_be_by_name(pname);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001222 }
1223
1224 if (!px) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001225 ha_alert("parsing [%s:%d] : unable to find backend '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1226 cur->file, cur->line, pname,
1227 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001228 cfgerr++;
1229 break;
1230 }
1231
1232 if (!(px->cap & PR_CAP_BE)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001233 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",
1234 cur->file, cur->line, pname,
1235 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001236 cfgerr++;
1237 break;
1238 }
1239
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001240 free(arg->data.str.area);
1241 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001242 arg->unresolved = 0;
1243 arg->data.prx = px;
1244 break;
1245
1246 case ARGT_TAB:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001247 if (arg->data.str.data) {
1248 pname = arg->data.str.area;
Willy Tarreaue2dc1fa2015-05-26 12:08:07 +02001249 px = proxy_tbl_by_name(pname);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001250 }
1251
1252 if (!px) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001253 ha_alert("parsing [%s:%d] : unable to find table '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1254 cur->file, cur->line, pname,
1255 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001256 cfgerr++;
1257 break;
1258 }
1259
1260 if (!px->table.size) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001261 ha_alert("parsing [%s:%d] : no table in proxy '%s' referenced in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1262 cur->file, cur->line, pname,
1263 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001264 cfgerr++;
1265 break;
1266 }
1267
Willy Tarreau151e1ca2019-02-05 11:38:38 +01001268 if (p->bind_proc & ~px->bind_proc) {
1269 ha_alert("parsing [%s:%d] : stick-table '%s' not present on all processes covered by proxy '%s'.\n",
1270 cur->file, cur->line, px->id, p->id);
Willy Tarreau1a0fe3b2019-02-06 10:25:07 +01001271 cfgerr++;
1272 break;
Willy Tarreau151e1ca2019-02-05 11:38:38 +01001273 }
1274
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001275 free(arg->data.str.area);
1276 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001277 arg->unresolved = 0;
1278 arg->data.prx = px;
1279 break;
1280
1281 case ARGT_USR:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001282 if (!arg->data.str.data) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001283 ha_alert("parsing [%s:%d] : missing userlist name in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1284 cur->file, cur->line,
1285 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001286 cfgerr++;
1287 break;
1288 }
1289
1290 if (p->uri_auth && p->uri_auth->userlist &&
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001291 !strcmp(p->uri_auth->userlist->name, arg->data.str.area))
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001292 ul = p->uri_auth->userlist;
1293 else
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001294 ul = auth_find_userlist(arg->data.str.area);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001295
1296 if (!ul) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001297 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 +02001298 cur->file, cur->line,
1299 arg->data.str.area,
Christopher Faulet767a84b2017-11-24 16:50:31 +01001300 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001301 cfgerr++;
1302 break;
1303 }
1304
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001305 free(arg->data.str.area);
1306 arg->data.str.area = NULL;
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001307 arg->unresolved = 0;
1308 arg->data.usr = ul;
1309 break;
Willy Tarreau46947782015-01-19 19:00:58 +01001310
1311 case ARGT_REG:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001312 if (!arg->data.str.data) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001313 ha_alert("parsing [%s:%d] : missing regex in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1314 cur->file, cur->line,
1315 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreau46947782015-01-19 19:00:58 +01001316 cfgerr++;
1317 continue;
1318 }
1319
1320 reg = calloc(1, sizeof(*reg));
1321 if (!reg) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001322 ha_alert("parsing [%s:%d] : not enough memory to build regex in arg %d of %s%s%s%s '%s' %s proxy '%s'.\n",
1323 cur->file, cur->line,
1324 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id);
Willy Tarreau46947782015-01-19 19:00:58 +01001325 cfgerr++;
1326 continue;
1327 }
1328
1329 rflags = 0;
1330 rflags |= (arg->type_flags & ARGF_REG_ICASE) ? REG_ICASE : 0;
1331 err = NULL;
1332
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001333 if (!regex_comp(arg->data.str.area, reg, !(rflags & REG_ICASE), 1 /* capture substr */, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001334 ha_alert("parsing [%s:%d] : error in regex '%s' in arg %d of %s%s%s%s '%s' %s proxy '%s' : %s.\n",
1335 cur->file, cur->line,
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001336 arg->data.str.area,
Christopher Faulet767a84b2017-11-24 16:50:31 +01001337 cur->arg_pos + 1, conv_pre, conv_ctx, conv_pos, ctx, cur->kw, where, p->id, err);
Willy Tarreau46947782015-01-19 19:00:58 +01001338 cfgerr++;
1339 continue;
1340 }
1341
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001342 free(arg->data.str.area);
1343 arg->data.str.area = NULL;
Willy Tarreau46947782015-01-19 19:00:58 +01001344 arg->unresolved = 0;
1345 arg->data.reg = reg;
1346 break;
1347
1348
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001349 }
1350
1351 LIST_DEL(&cur->list);
1352 free(cur);
1353 } /* end of args processing */
1354
1355 return cfgerr;
1356}
1357
1358/*
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001359 * Process a fetch + format conversion as defined by the sample expression
1360 * <expr> on request or response considering the <opt> parameter. The output is
Adis Nezirovic79beb242015-07-06 15:41:02 +02001361 * not explicitly set to <smp_type>, but shall be compatible with it as
1362 * specified by 'sample_casts' table. If a stable sample can be fetched, or an
1363 * unstable one when <opt> contains SMP_OPT_FINAL, the sample is converted and
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001364 * returned without the SMP_F_MAY_CHANGE flag. If an unstable sample is found
1365 * and <opt> does not contain SMP_OPT_FINAL, then the sample is returned as-is
1366 * with its SMP_F_MAY_CHANGE flag so that the caller can check it and decide to
1367 * take actions (eg: wait longer). If a sample could not be found or could not
Willy Tarreau6bcb0a82014-07-30 08:56:35 +02001368 * be converted, NULL is returned. The caller MUST NOT use the sample if the
1369 * SMP_F_MAY_CHANGE flag is present, as it is used only as a hint that there is
1370 * still hope to get it after waiting longer, and is not converted to string.
1371 * The possible output combinations are the following :
1372 *
1373 * return MAY_CHANGE FINAL Meaning for the sample
1374 * NULL * * Not present and will never be (eg: header)
1375 * smp 0 * Final value converted (eg: header)
1376 * smp 1 0 Not present yet, may appear later (eg: header)
1377 * smp 1 1 never happens (either flag is cleared on output)
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001378 */
Adis Nezirovic79beb242015-07-06 15:41:02 +02001379struct sample *sample_fetch_as_type(struct proxy *px, struct session *sess,
Willy Tarreau192252e2015-04-04 01:47:55 +02001380 struct stream *strm, unsigned int opt,
Adis Nezirovic79beb242015-07-06 15:41:02 +02001381 struct sample_expr *expr, int smp_type)
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001382{
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001383 struct sample *smp = &temp_smp;
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001384
Willy Tarreau6c616e02014-06-25 16:56:41 +02001385 memset(smp, 0, sizeof(*smp));
1386
Willy Tarreau192252e2015-04-04 01:47:55 +02001387 if (!sample_process(px, sess, strm, opt, expr, smp)) {
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001388 if ((smp->flags & SMP_F_MAY_CHANGE) && !(opt & SMP_OPT_FINAL))
1389 return smp;
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001390 return NULL;
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001391 }
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001392
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001393 if (!sample_casts[smp->data.type][smp_type])
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001394 return NULL;
1395
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001396 if (!sample_casts[smp->data.type][smp_type](smp))
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001397 return NULL;
1398
Willy Tarreau5b4bf702014-06-13 16:04:35 +02001399 smp->flags &= ~SMP_F_MAY_CHANGE;
Willy Tarreaue7ad4bb2012-12-21 00:02:32 +01001400 return smp;
1401}
1402
Christopher Faulet476e5d02016-10-26 11:34:47 +02001403static void release_sample_arg(struct arg *p)
1404{
1405 struct arg *p_back = p;
1406
1407 if (!p)
1408 return;
1409
1410 while (p->type != ARGT_STOP) {
1411 if (p->type == ARGT_STR || p->unresolved) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001412 free(p->data.str.area);
1413 p->data.str.area = NULL;
Christopher Faulet476e5d02016-10-26 11:34:47 +02001414 p->unresolved = 0;
1415 }
1416 else if (p->type == ARGT_REG) {
1417 if (p->data.reg) {
1418 regex_free(p->data.reg);
1419 free(p->data.reg);
1420 p->data.reg = NULL;
1421 }
1422 }
1423 p++;
1424 }
1425
1426 if (p_back != empty_arg_list)
1427 free(p_back);
1428}
1429
1430void release_sample_expr(struct sample_expr *expr)
1431{
1432 struct sample_conv_expr *conv_expr, *conv_exprb;
1433
1434 if (!expr)
1435 return;
1436
1437 list_for_each_entry_safe(conv_expr, conv_exprb, &expr->conv_exprs, list)
1438 release_sample_arg(conv_expr->arg_p);
1439 release_sample_arg(expr->arg_p);
1440 free(expr);
1441}
1442
Emeric Brun107ca302010-01-04 16:16:05 +01001443/*****************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +02001444/* Sample format convert functions */
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +02001445/* These functions set the data type on return. */
Emeric Brun107ca302010-01-04 16:16:05 +01001446/*****************************************************************/
1447
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001448#ifdef DEBUG_EXPR
1449static int sample_conv_debug(const struct arg *arg_p, struct sample *smp, void *private)
1450{
1451 int i;
1452 struct sample tmp;
1453
1454 if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001455 fprintf(stderr, "[debug converter] type: %s ", smp_to_type[smp->data.type]);
1456 if (!sample_casts[smp->data.type][SMP_T_STR]) {
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001457 fprintf(stderr, "(undisplayable)");
1458 } else {
1459
1460 /* Copy sample fetch. This put the sample as const, the
1461 * cast will copy data if a transformation is required.
1462 */
1463 memcpy(&tmp, smp, sizeof(struct sample));
1464 tmp.flags = SMP_F_CONST;
1465
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001466 if (!sample_casts[smp->data.type][SMP_T_STR](&tmp))
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001467 fprintf(stderr, "(undisplayable)");
1468
1469 else {
1470 /* Display the displayable chars*. */
1471 fprintf(stderr, "<");
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001472 for (i = 0; i < tmp.data.u.str.data; i++) {
1473 if (isprint(tmp.data.u.str.area[i]))
1474 fputc(tmp.data.u.str.area[i],
1475 stderr);
Thierry FOURNIER9687c772015-05-07 15:46:29 +02001476 else
1477 fputc('.', stderr);
1478 }
1479 }
1480 fprintf(stderr, ">\n");
1481 }
1482 }
1483 return 1;
1484}
1485#endif
1486
Holger Just1bfc24b2017-05-06 00:56:53 +02001487static int sample_conv_base642bin(const struct arg *arg_p, struct sample *smp, void *private)
1488{
Willy Tarreau83061a82018-07-13 11:56:34 +02001489 struct buffer *trash = get_trash_chunk();
Holger Just1bfc24b2017-05-06 00:56:53 +02001490 int bin_len;
1491
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001492 trash->data = 0;
1493 bin_len = base64dec(smp->data.u.str.area, smp->data.u.str.data,
1494 trash->area, trash->size);
Holger Just1bfc24b2017-05-06 00:56:53 +02001495 if (bin_len < 0)
1496 return 0;
1497
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001498 trash->data = bin_len;
Holger Just1bfc24b2017-05-06 00:56:53 +02001499 smp->data.u.str = *trash;
1500 smp->data.type = SMP_T_BIN;
1501 smp->flags &= ~SMP_F_CONST;
1502 return 1;
1503}
1504
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001505static int sample_conv_bin2base64(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun53d1a982014-04-30 18:21:37 +02001506{
Willy Tarreau83061a82018-07-13 11:56:34 +02001507 struct buffer *trash = get_trash_chunk();
Emeric Brun53d1a982014-04-30 18:21:37 +02001508 int b64_len;
1509
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001510 trash->data = 0;
1511 b64_len = a2base64(smp->data.u.str.area, smp->data.u.str.data,
1512 trash->area, trash->size);
Emeric Brun53d1a982014-04-30 18:21:37 +02001513 if (b64_len < 0)
1514 return 0;
1515
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001516 trash->data = b64_len;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001517 smp->data.u.str = *trash;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001518 smp->data.type = SMP_T_STR;
Emeric Brun53d1a982014-04-30 18:21:37 +02001519 smp->flags &= ~SMP_F_CONST;
1520 return 1;
1521}
1522
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001523static int sample_conv_sha1(const struct arg *arg_p, struct sample *smp, void *private)
1524{
1525 blk_SHA_CTX ctx;
Willy Tarreau83061a82018-07-13 11:56:34 +02001526 struct buffer *trash = get_trash_chunk();
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001527
1528 memset(&ctx, 0, sizeof(ctx));
1529
1530 blk_SHA1_Init(&ctx);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001531 blk_SHA1_Update(&ctx, smp->data.u.str.area, smp->data.u.str.data);
1532 blk_SHA1_Final((unsigned char *) trash->area, &ctx);
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001533
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001534 trash->data = 20;
Dragan Dosen6e5a9ca2017-10-24 09:18:23 +02001535 smp->data.u.str = *trash;
1536 smp->data.type = SMP_T_BIN;
1537 smp->flags &= ~SMP_F_CONST;
1538 return 1;
1539}
1540
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001541static int sample_conv_bin2hex(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001542{
Willy Tarreau83061a82018-07-13 11:56:34 +02001543 struct buffer *trash = get_trash_chunk();
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001544 unsigned char c;
1545 int ptr = 0;
1546
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001547 trash->data = 0;
1548 while (ptr < smp->data.u.str.data && trash->data <= trash->size - 2) {
1549 c = smp->data.u.str.area[ptr++];
1550 trash->area[trash->data++] = hextab[(c >> 4) & 0xF];
1551 trash->area[trash->data++] = hextab[c & 0xF];
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001552 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001553 smp->data.u.str = *trash;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001554 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01001555 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01001556 return 1;
1557}
1558
Dragan Dosen3f957b22017-10-24 09:27:34 +02001559static int sample_conv_hex2int(const struct arg *arg_p, struct sample *smp, void *private)
1560{
1561 long long int n = 0;
1562 int i, c;
1563
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001564 for (i = 0; i < smp->data.u.str.data; i++) {
1565 if ((c = hex2i(smp->data.u.str.area[i])) < 0)
Dragan Dosen3f957b22017-10-24 09:27:34 +02001566 return 0;
1567 n = (n << 4) + c;
1568 }
1569
1570 smp->data.u.sint = n;
1571 smp->data.type = SMP_T_SINT;
1572 smp->flags &= ~SMP_F_CONST;
1573 return 1;
1574}
1575
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001576/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001577static int sample_conv_djb2(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001578{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001579 smp->data.u.sint = hash_djb2(smp->data.u.str.area,
1580 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001581 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001582 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001583 smp->data.type = SMP_T_SINT;
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001584 return 1;
1585}
1586
Willy Tarreau60a2ee72017-12-15 07:13:48 +01001587static int sample_conv_length(const struct arg *arg_p, struct sample *smp, void *private)
Etienne Carriereed0d24e2017-12-13 13:41:34 +01001588{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001589 int i = smp->data.u.str.data;
Etienne Carriereed0d24e2017-12-13 13:41:34 +01001590 smp->data.u.sint = i;
1591 smp->data.type = SMP_T_SINT;
1592 return 1;
1593}
1594
1595
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001596static int sample_conv_str2lower(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun107ca302010-01-04 16:16:05 +01001597{
1598 int i;
1599
Willy Tarreauf0645dc2016-08-09 14:29:38 +02001600 if (!smp_make_rw(smp))
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01001601 return 0;
1602
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001603 for (i = 0; i < smp->data.u.str.data; i++) {
1604 if ((smp->data.u.str.area[i] >= 'A') && (smp->data.u.str.area[i] <= 'Z'))
1605 smp->data.u.str.area[i] += 'a' - 'A';
Emeric Brun107ca302010-01-04 16:16:05 +01001606 }
1607 return 1;
1608}
1609
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001610static int sample_conv_str2upper(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun107ca302010-01-04 16:16:05 +01001611{
1612 int i;
1613
Willy Tarreauf0645dc2016-08-09 14:29:38 +02001614 if (!smp_make_rw(smp))
Emeric Brun485479d2010-09-23 18:02:19 +02001615 return 0;
1616
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001617 for (i = 0; i < smp->data.u.str.data; i++) {
1618 if ((smp->data.u.str.area[i] >= 'a') && (smp->data.u.str.area[i] <= 'z'))
1619 smp->data.u.str.area[i] += 'A' - 'a';
Emeric Brun107ca302010-01-04 16:16:05 +01001620 }
1621 return 1;
1622}
1623
Tim Duesterhus1478aa72018-01-25 16:24:51 +01001624/* takes the IPv4 mask in args[0] and an optional IPv6 mask in args[1] */
1625static int sample_conv_ipmask(const struct arg *args, struct sample *smp, void *private)
Willy Tarreaud31d6eb2010-01-26 18:01:41 +01001626{
Tim Duesterhus1478aa72018-01-25 16:24:51 +01001627 /* Attempt to convert to IPv4 to apply the correct mask. */
1628 c_ipv62ip(smp);
1629
1630 if (smp->data.type == SMP_T_IPV4) {
1631 smp->data.u.ipv4.s_addr &= args[0].data.ipv4.s_addr;
1632 smp->data.type = SMP_T_IPV4;
1633 }
1634 else if (smp->data.type == SMP_T_IPV6) {
1635 /* IPv6 cannot be converted without an IPv6 mask. */
1636 if (args[1].type != ARGT_IPV6)
1637 return 0;
1638
1639 *(uint32_t*)&smp->data.u.ipv6.s6_addr[0] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[0];
1640 *(uint32_t*)&smp->data.u.ipv6.s6_addr[4] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[4];
1641 *(uint32_t*)&smp->data.u.ipv6.s6_addr[8] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[8];
1642 *(uint32_t*)&smp->data.u.ipv6.s6_addr[12] &= *(uint32_t*)&args[1].data.ipv6.s6_addr[12];
1643 smp->data.type = SMP_T_IPV6;
1644 }
1645
Willy Tarreaud31d6eb2010-01-26 18:01:41 +01001646 return 1;
1647}
1648
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001649/* takes an UINT value on input supposed to represent the time since EPOCH,
1650 * adds an optional offset found in args[1] and emits a string representing
1651 * the local time in the format specified in args[1] using strftime().
1652 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001653static int sample_conv_ltime(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001654{
Willy Tarreau83061a82018-07-13 11:56:34 +02001655 struct buffer *temp;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001656 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001657 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001658 struct tm *tm;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001659
1660 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001661 if (args[1].type == ARGT_SINT)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001662 curr_date += args[1].data.sint;
1663
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001664 tm = localtime(&curr_date);
1665 if (!tm)
1666 return 0;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001667 temp = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001668 temp->data = strftime(temp->area, temp->size, args[0].data.str.area,
1669 tm);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001670 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001671 smp->data.type = SMP_T_STR;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001672 return 1;
1673}
1674
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001675/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001676static int sample_conv_sdbm(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001677{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001678 smp->data.u.sint = hash_sdbm(smp->data.u.str.area,
1679 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001680 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001681 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001682 smp->data.type = SMP_T_SINT;
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001683 return 1;
1684}
1685
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001686/* takes an UINT value on input supposed to represent the time since EPOCH,
1687 * adds an optional offset found in args[1] and emits a string representing
1688 * the UTC date in the format specified in args[1] using strftime().
1689 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001690static int sample_conv_utime(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001691{
Willy Tarreau83061a82018-07-13 11:56:34 +02001692 struct buffer *temp;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001693 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001694 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001695 struct tm *tm;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001696
1697 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001698 if (args[1].type == ARGT_SINT)
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001699 curr_date += args[1].data.sint;
1700
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +02001701 tm = gmtime(&curr_date);
1702 if (!tm)
1703 return 0;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001704 temp = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001705 temp->data = strftime(temp->area, temp->size, args[0].data.str.area,
1706 tm);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001707 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001708 smp->data.type = SMP_T_STR;
Willy Tarreau0dbfdba2014-07-10 16:37:47 +02001709 return 1;
1710}
1711
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001712/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001713static int sample_conv_wt6(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001714{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001715 smp->data.u.sint = hash_wt6(smp->data.u.str.area,
1716 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001717 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001718 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001719 smp->data.type = SMP_T_SINT;
Willy Tarreau23ec4ca2014-07-15 20:15:37 +02001720 return 1;
1721}
1722
Thierry FOURNIER01e09742016-12-26 11:46:11 +01001723/* hashes the binary input into a 32-bit unsigned int using xxh.
1724 * The seed of the hash defaults to 0 but can be changd in argument 1.
1725 */
1726static int sample_conv_xxh32(const struct arg *arg_p, struct sample *smp, void *private)
1727{
1728 unsigned int seed;
1729
1730 if (arg_p && arg_p->data.sint)
1731 seed = arg_p->data.sint;
1732 else
1733 seed = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001734 smp->data.u.sint = XXH32(smp->data.u.str.area, smp->data.u.str.data,
1735 seed);
Thierry FOURNIER01e09742016-12-26 11:46:11 +01001736 smp->data.type = SMP_T_SINT;
1737 return 1;
1738}
1739
1740/* hashes the binary input into a 64-bit unsigned int using xxh.
1741 * In fact, the function returns a 64 bit unsigned, but the sample
1742 * storage of haproxy only proposes 64-bits signed, so the value is
1743 * cast as signed. This cast doesn't impact the hash repartition.
1744 * The seed of the hash defaults to 0 but can be changd in argument 1.
1745 */
1746static int sample_conv_xxh64(const struct arg *arg_p, struct sample *smp, void *private)
1747{
1748 unsigned long long int seed;
1749
1750 if (arg_p && arg_p->data.sint)
1751 seed = (unsigned long long int)arg_p->data.sint;
1752 else
1753 seed = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001754 smp->data.u.sint = (long long int)XXH64(smp->data.u.str.area,
1755 smp->data.u.str.data, seed);
Thierry FOURNIER01e09742016-12-26 11:46:11 +01001756 smp->data.type = SMP_T_SINT;
1757 return 1;
1758}
1759
Willy Tarreau80599772015-01-20 19:35:24 +01001760/* hashes the binary input into a 32-bit unsigned int */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001761static int sample_conv_crc32(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau80599772015-01-20 19:35:24 +01001762{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001763 smp->data.u.sint = hash_crc32(smp->data.u.str.area,
1764 smp->data.u.str.data);
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001765 if (arg_p && arg_p->data.sint)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001766 smp->data.u.sint = full_hash(smp->data.u.sint);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001767 smp->data.type = SMP_T_SINT;
Willy Tarreau80599772015-01-20 19:35:24 +01001768 return 1;
1769}
1770
Emmanuel Hocdet50791a72018-03-21 11:19:01 +01001771/* hashes the binary input into crc32c (RFC4960, Appendix B [8].) */
1772static int sample_conv_crc32c(const struct arg *arg_p, struct sample *smp, void *private)
1773{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001774 smp->data.u.sint = hash_crc32c(smp->data.u.str.area,
1775 smp->data.u.str.data);
Emmanuel Hocdet50791a72018-03-21 11:19:01 +01001776 if (arg_p && arg_p->data.sint)
1777 smp->data.u.sint = full_hash(smp->data.u.sint);
1778 smp->data.type = SMP_T_SINT;
1779 return 1;
1780}
1781
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001782/* This function escape special json characters. The returned string can be
1783 * safely set between two '"' and used as json string. The json string is
1784 * defined like this:
1785 *
1786 * any Unicode character except '"' or '\' or control character
1787 * \", \\, \/, \b, \f, \n, \r, \t, \u + four-hex-digits
1788 *
1789 * The enum input_type contain all the allowed mode for decoding the input
1790 * string.
1791 */
1792enum input_type {
1793 IT_ASCII = 0,
1794 IT_UTF8,
1795 IT_UTF8S,
1796 IT_UTF8P,
1797 IT_UTF8PS,
1798};
1799static int sample_conv_json_check(struct arg *arg, struct sample_conv *conv,
1800 const char *file, int line, char **err)
1801{
1802 if (!arg) {
1803 memprintf(err, "Unexpected empty arg list");
1804 return 0;
1805 }
1806
1807 if (arg->type != ARGT_STR) {
1808 memprintf(err, "Unexpected arg type");
1809 return 0;
1810 }
1811
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001812 if (strcmp(arg->data.str.area, "") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001813 arg->type = ARGT_SINT;
1814 arg->data.sint = IT_ASCII;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001815 return 1;
1816 }
1817
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001818 else if (strcmp(arg->data.str.area, "ascii") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001819 arg->type = ARGT_SINT;
1820 arg->data.sint = IT_ASCII;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001821 return 1;
1822 }
1823
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001824 else if (strcmp(arg->data.str.area, "utf8") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001825 arg->type = ARGT_SINT;
1826 arg->data.sint = IT_UTF8;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001827 return 1;
1828 }
1829
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001830 else if (strcmp(arg->data.str.area, "utf8s") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001831 arg->type = ARGT_SINT;
1832 arg->data.sint = IT_UTF8S;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001833 return 1;
1834 }
1835
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001836 else if (strcmp(arg->data.str.area, "utf8p") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001837 arg->type = ARGT_SINT;
1838 arg->data.sint = IT_UTF8P;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001839 return 1;
1840 }
1841
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001842 else if (strcmp(arg->data.str.area, "utf8ps") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001843 arg->type = ARGT_SINT;
1844 arg->data.sint = IT_UTF8PS;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001845 return 1;
1846 }
1847
Thierry FOURNIER / OZON.IOa69c9122016-11-23 01:13:57 +01001848 memprintf(err, "Unexpected input code type. "
1849 "Allowed value are 'ascii', 'utf8', 'utf8s', 'utf8p' and 'utf8ps'");
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001850 return 0;
1851}
1852
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001853static int sample_conv_json(const struct arg *arg_p, struct sample *smp, void *private)
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001854{
Willy Tarreau83061a82018-07-13 11:56:34 +02001855 struct buffer *temp;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001856 char _str[7]; /* \u + 4 hex digit + null char for sprintf. */
1857 const char *str;
1858 int len;
1859 enum input_type input_type = IT_ASCII;
1860 unsigned int c;
1861 unsigned int ret;
1862 char *p;
1863
1864 if (arg_p)
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001865 input_type = arg_p->data.sint;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001866
1867 temp = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001868 temp->data = 0;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001869
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001870 p = smp->data.u.str.area;
1871 while (p < smp->data.u.str.area + smp->data.u.str.data) {
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001872
1873 if (input_type == IT_ASCII) {
1874 /* Read input as ASCII. */
1875 c = *(unsigned char *)p;
1876 p++;
1877 }
1878 else {
1879 /* Read input as UTF8. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001880 ret = utf8_next(p,
1881 smp->data.u.str.data - ( p - smp->data.u.str.area),
1882 &c);
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001883 p += utf8_return_length(ret);
1884
1885 if (input_type == IT_UTF8 && utf8_return_code(ret) != UTF8_CODE_OK)
1886 return 0;
1887 if (input_type == IT_UTF8S && utf8_return_code(ret) != UTF8_CODE_OK)
1888 continue;
1889 if (input_type == IT_UTF8P && utf8_return_code(ret) & (UTF8_CODE_INVRANGE|UTF8_CODE_BADSEQ))
1890 return 0;
1891 if (input_type == IT_UTF8PS && utf8_return_code(ret) & (UTF8_CODE_INVRANGE|UTF8_CODE_BADSEQ))
1892 continue;
1893
1894 /* Check too big values. */
1895 if ((unsigned int)c > 0xffff) {
1896 if (input_type == IT_UTF8 || input_type == IT_UTF8P)
1897 return 0;
1898 continue;
1899 }
1900 }
1901
1902 /* Convert character. */
1903 if (c == '"') {
1904 len = 2;
1905 str = "\\\"";
1906 }
1907 else if (c == '\\') {
1908 len = 2;
1909 str = "\\\\";
1910 }
1911 else if (c == '/') {
1912 len = 2;
1913 str = "\\/";
1914 }
1915 else if (c == '\b') {
1916 len = 2;
1917 str = "\\b";
1918 }
1919 else if (c == '\f') {
1920 len = 2;
1921 str = "\\f";
1922 }
1923 else if (c == '\r') {
1924 len = 2;
1925 str = "\\r";
1926 }
1927 else if (c == '\n') {
1928 len = 2;
1929 str = "\\n";
1930 }
1931 else if (c == '\t') {
1932 len = 2;
1933 str = "\\t";
1934 }
1935 else if (c > 0xff || !isprint(c)) {
1936 /* isprint generate a segfault if c is too big. The man says that
1937 * c must have the value of an unsigned char or EOF.
1938 */
1939 len = 6;
1940 _str[0] = '\\';
1941 _str[1] = 'u';
1942 snprintf(&_str[2], 5, "%04x", (unsigned short)c);
1943 str = _str;
1944 }
1945 else {
1946 len = 1;
1947 str = (char *)&c;
1948 }
1949
1950 /* Check length */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001951 if (temp->data + len > temp->size)
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001952 return 0;
1953
1954 /* Copy string. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001955 memcpy(temp->area + temp->data, str, len);
1956 temp->data += len;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001957 }
1958
1959 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001960 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02001961 smp->data.type = SMP_T_STR;
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02001962
1963 return 1;
1964}
1965
Emeric Brun54c4ac82014-11-03 15:32:43 +01001966/* This sample function is designed to extract some bytes from an input buffer.
1967 * First arg is the offset.
1968 * Optional second arg is the length to truncate */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02001969static int sample_conv_bytes(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brun54c4ac82014-11-03 15:32:43 +01001970{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001971 if (smp->data.u.str.data <= arg_p[0].data.sint) {
1972 smp->data.u.str.data = 0;
Emeric Brun54c4ac82014-11-03 15:32:43 +01001973 return 1;
1974 }
1975
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02001976 if (smp->data.u.str.size)
1977 smp->data.u.str.size -= arg_p[0].data.sint;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001978 smp->data.u.str.data -= arg_p[0].data.sint;
1979 smp->data.u.str.area += arg_p[0].data.sint;
Emeric Brun54c4ac82014-11-03 15:32:43 +01001980
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001981 if ((arg_p[1].type == ARGT_SINT) && (arg_p[1].data.sint < smp->data.u.str.data))
1982 smp->data.u.str.data = arg_p[1].data.sint;
Emeric Brun54c4ac82014-11-03 15:32:43 +01001983
1984 return 1;
1985}
1986
Emeric Brunf399b0d2014-11-03 17:07:03 +01001987static int sample_conv_field_check(struct arg *args, struct sample_conv *conv,
1988 const char *file, int line, char **err)
1989{
1990 struct arg *arg = args;
1991
1992 if (!arg) {
1993 memprintf(err, "Unexpected empty arg list");
1994 return 0;
1995 }
1996
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02001997 if (arg->type != ARGT_SINT) {
Emeric Brunf399b0d2014-11-03 17:07:03 +01001998 memprintf(err, "Unexpected arg type");
1999 return 0;
2000 }
2001
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002002 if (!arg->data.sint) {
Emeric Brunf399b0d2014-11-03 17:07:03 +01002003 memprintf(err, "Unexpected value 0 for index");
2004 return 0;
2005 }
2006
2007 arg++;
2008
2009 if (arg->type != ARGT_STR) {
2010 memprintf(err, "Unexpected arg type");
2011 return 0;
2012 }
2013
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002014 if (!arg->data.str.data) {
Emeric Brunf399b0d2014-11-03 17:07:03 +01002015 memprintf(err, "Empty separators list");
2016 return 0;
2017 }
2018
2019 return 1;
2020}
2021
2022/* This sample function is designed to a return selected part of a string (field).
2023 * First arg is the index of the field (start at 1)
2024 * Second arg is a char list of separators (type string)
2025 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002026static int sample_conv_field(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brunf399b0d2014-11-03 17:07:03 +01002027{
Marcin Deranek9631a282018-04-16 14:30:46 +02002028 int field;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002029 char *start, *end;
2030 int i;
Marcin Deranek9631a282018-04-16 14:30:46 +02002031 int count = (arg_p[2].type == ARGT_SINT) ? arg_p[2].data.sint : 1;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002032
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002033 if (!arg_p[0].data.sint)
Emeric Brunf399b0d2014-11-03 17:07:03 +01002034 return 0;
2035
Marcin Deranek9631a282018-04-16 14:30:46 +02002036 if (arg_p[0].data.sint < 0) {
2037 field = -1;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002038 end = start = smp->data.u.str.area + smp->data.u.str.data;
2039 while (start > smp->data.u.str.area) {
2040 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2041 if (*(start-1) == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002042 if (field == arg_p[0].data.sint) {
2043 if (count == 1)
2044 goto found;
2045 else if (count > 1)
2046 count--;
2047 } else {
2048 end = start-1;
2049 field--;
2050 }
2051 break;
2052 }
Emeric Brunf399b0d2014-11-03 17:07:03 +01002053 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002054 start--;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002055 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002056 } else {
2057 field = 1;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002058 end = start = smp->data.u.str.area;
2059 while (end - smp->data.u.str.area < smp->data.u.str.data) {
2060 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2061 if (*end == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002062 if (field == arg_p[0].data.sint) {
2063 if (count == 1)
2064 goto found;
2065 else if (count > 1)
2066 count--;
2067 } else {
2068 start = end+1;
2069 field++;
2070 }
2071 break;
2072 }
2073 }
2074 end++;
2075 }
Emeric Brunf399b0d2014-11-03 17:07:03 +01002076 }
2077
2078 /* Field not found */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002079 if (field != arg_p[0].data.sint) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002080 smp->data.u.str.data = 0;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002081 return 1;
2082 }
2083found:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002084 smp->data.u.str.data = end - start;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002085 /* If ret string is len 0, no need to
2086 change pointers or to update size */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002087 if (!smp->data.u.str.data)
Emeric Brunf399b0d2014-11-03 17:07:03 +01002088 return 1;
2089
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002090 smp->data.u.str.area = start;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002091
2092 /* Compute remaining size if needed
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002093 Note: smp->data.u.str.size cannot be set to 0 */
2094 if (smp->data.u.str.size)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002095 smp->data.u.str.size -= start - smp->data.u.str.area;
Emeric Brunf399b0d2014-11-03 17:07:03 +01002096
2097 return 1;
2098}
2099
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002100/* This sample function is designed to return a word from a string.
2101 * First arg is the index of the word (start at 1)
2102 * Second arg is a char list of words separators (type string)
2103 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002104static int sample_conv_word(const struct arg *arg_p, struct sample *smp, void *private)
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002105{
Marcin Deranek9631a282018-04-16 14:30:46 +02002106 int word;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002107 char *start, *end;
2108 int i, issep, inword;
Marcin Deranek9631a282018-04-16 14:30:46 +02002109 int count = (arg_p[2].type == ARGT_SINT) ? arg_p[2].data.sint : 1;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002110
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002111 if (!arg_p[0].data.sint)
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002112 return 0;
2113
2114 word = 0;
2115 inword = 0;
Marcin Deranek9631a282018-04-16 14:30:46 +02002116 if (arg_p[0].data.sint < 0) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002117 end = start = smp->data.u.str.area + smp->data.u.str.data;
2118 while (start > smp->data.u.str.area) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002119 issep = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002120 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2121 if (*(start-1) == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002122 issep = 1;
2123 break;
2124 }
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002125 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002126 if (!inword) {
2127 if (!issep) {
2128 if (word != arg_p[0].data.sint) {
2129 word--;
2130 end = start;
2131 }
2132 inword = 1;
2133 }
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002134 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002135 else if (issep) {
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002136 if (word == arg_p[0].data.sint) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002137 if (count == 1)
2138 goto found;
2139 else if (count > 1)
2140 count--;
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002141 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002142 inword = 0;
2143 }
2144 start--;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002145 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002146 } else {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002147 end = start = smp->data.u.str.area;
2148 while (end - smp->data.u.str.area < smp->data.u.str.data) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002149 issep = 0;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002150 for (i = 0 ; i < arg_p[1].data.str.data; i++) {
2151 if (*end == arg_p[1].data.str.area[i]) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002152 issep = 1;
2153 break;
2154 }
2155 }
2156 if (!inword) {
2157 if (!issep) {
2158 if (word != arg_p[0].data.sint) {
2159 word++;
2160 start = end;
2161 }
2162 inword = 1;
2163 }
2164 }
2165 else if (issep) {
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002166 if (word == arg_p[0].data.sint) {
Marcin Deranek9631a282018-04-16 14:30:46 +02002167 if (count == 1)
2168 goto found;
2169 else if (count > 1)
2170 count--;
Willy Tarreau9eb2a4a2018-04-19 10:33:28 +02002171 }
Marcin Deranek9631a282018-04-16 14:30:46 +02002172 inword = 0;
2173 }
2174 end++;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002175 }
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002176 }
2177
2178 /* Field not found */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002179 if (word != arg_p[0].data.sint) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002180 smp->data.u.str.data = 0;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002181 return 1;
2182 }
2183found:
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002184 smp->data.u.str.data = end - start;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002185 /* If ret string is len 0, no need to
2186 change pointers or to update size */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002187 if (!smp->data.u.str.data)
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002188 return 1;
2189
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002190 smp->data.u.str.area = start;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002191
2192 /* Compute remaining size if needed
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002193 Note: smp->data.u.str.size cannot be set to 0 */
2194 if (smp->data.u.str.size)
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002195 smp->data.u.str.size -= start - smp->data.u.str.area;
Emeric Brunc9a0f6d2014-11-25 14:09:01 +01002196
2197 return 1;
2198}
2199
Willy Tarreau7eda8492015-01-20 19:47:06 +01002200static int sample_conv_regsub_check(struct arg *args, struct sample_conv *conv,
2201 const char *file, int line, char **err)
2202{
2203 struct arg *arg = args;
2204 char *p;
2205 int len;
2206
2207 /* arg0 is a regex, it uses type_flag for ICASE and global match */
2208 arg[0].type_flags = 0;
2209
2210 if (arg[2].type != ARGT_STR)
2211 return 1;
2212
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002213 p = arg[2].data.str.area;
2214 len = arg[2].data.str.data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002215 while (len) {
2216 if (*p == 'i') {
2217 arg[0].type_flags |= ARGF_REG_ICASE;
2218 }
2219 else if (*p == 'g') {
2220 arg[0].type_flags |= ARGF_REG_GLOB;
2221 }
2222 else {
2223 memprintf(err, "invalid regex flag '%c', only 'i' and 'g' are supported", *p);
2224 return 0;
2225 }
2226 p++;
2227 len--;
2228 }
2229 return 1;
2230}
2231
2232/* This sample function is designed to do the equivalent of s/match/replace/ on
2233 * the input string. It applies a regex and restarts from the last matched
2234 * location until nothing matches anymore. First arg is the regex to apply to
2235 * the input string, second arg is the replacement expression.
2236 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002237static int sample_conv_regsub(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau7eda8492015-01-20 19:47:06 +01002238{
2239 char *start, *end;
2240 struct my_regex *reg = arg_p[0].data.reg;
2241 regmatch_t pmatch[MAX_MATCH];
Willy Tarreau83061a82018-07-13 11:56:34 +02002242 struct buffer *trash = get_trash_chunk();
Willy Tarreau7eda8492015-01-20 19:47:06 +01002243 int flag, max;
2244 int found;
2245
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002246 start = smp->data.u.str.area;
2247 end = start + smp->data.u.str.data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002248
2249 flag = 0;
2250 while (1) {
2251 /* check for last round which is used to copy remaining parts
2252 * when not running in global replacement mode.
2253 */
2254 found = 0;
2255 if ((arg_p[0].type_flags & ARGF_REG_GLOB) || !(flag & REG_NOTBOL)) {
2256 /* Note: we can have start == end on empty strings or at the end */
2257 found = regex_exec_match2(reg, start, end - start, MAX_MATCH, pmatch, flag);
2258 }
2259
2260 if (!found)
2261 pmatch[0].rm_so = end - start;
2262
2263 /* copy the heading non-matching part (which may also be the tail if nothing matches) */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002264 max = trash->size - trash->data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002265 if (max && pmatch[0].rm_so > 0) {
2266 if (max > pmatch[0].rm_so)
2267 max = pmatch[0].rm_so;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002268 memcpy(trash->area + trash->data, start, max);
2269 trash->data += max;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002270 }
2271
2272 if (!found)
2273 break;
2274
2275 /* replace the matching part */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002276 max = trash->size - trash->data;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002277 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002278 if (max > arg_p[1].data.str.data)
2279 max = arg_p[1].data.str.data;
2280 memcpy(trash->area + trash->data,
2281 arg_p[1].data.str.area, max);
2282 trash->data += max;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002283 }
2284
2285 /* stop here if we're done with this string */
2286 if (start >= end)
2287 break;
2288
2289 /* We have a special case for matches of length 0 (eg: "x*y*").
2290 * These ones are considered to match in front of a character,
2291 * so we have to copy that character and skip to the next one.
2292 */
2293 if (!pmatch[0].rm_eo) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002294 if (trash->data < trash->size)
2295 trash->area[trash->data++] = start[pmatch[0].rm_eo];
Willy Tarreau7eda8492015-01-20 19:47:06 +01002296 pmatch[0].rm_eo++;
2297 }
2298
2299 start += pmatch[0].rm_eo;
2300 flag |= REG_NOTBOL;
2301 }
2302
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002303 smp->data.u.str = *trash;
Willy Tarreau7eda8492015-01-20 19:47:06 +01002304 return 1;
2305}
2306
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002307/* This function check an operator entry. It expects a string.
2308 * The string can be an integer or a variable name.
2309 */
2310static int check_operator(struct arg *args, struct sample_conv *conv,
2311 const char *file, int line, char **err)
2312{
2313 const char *str;
2314 const char *end;
2315
2316 /* Try to decode a variable. */
2317 if (vars_check_arg(&args[0], NULL))
2318 return 1;
2319
2320 /* Try to convert an integer */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002321 str = args[0].data.str.area;
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002322 end = str + strlen(str);
2323 args[0].data.sint = read_int64(&str, end);
2324 if (*str != '\0') {
2325 memprintf(err, "expects an integer or a variable name");
2326 return 0;
2327 }
2328 args[0].type = ARGT_SINT;
2329 return 1;
2330}
2331
Willy Tarreau6204cd92016-03-10 16:33:04 +01002332/* This function returns a sample struct filled with an arg content.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002333 * If the arg contain an integer, the integer is returned in the
2334 * sample. If the arg contains a variable descriptor, it returns the
2335 * variable value.
2336 *
2337 * This function returns 0 if an error occurs, otherwise it returns 1.
2338 */
Willy Tarreau6204cd92016-03-10 16:33:04 +01002339static inline int sample_conv_var2smp(const struct arg *arg, struct sample *smp)
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002340{
2341 switch (arg->type) {
2342 case ARGT_SINT:
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002343 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002344 smp->data.u.sint = arg->data.sint;
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002345 return 1;
2346 case ARGT_VAR:
Willy Tarreau6204cd92016-03-10 16:33:04 +01002347 if (!vars_get_by_desc(&arg->data.var, smp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002348 return 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002349 if (!sample_casts[smp->data.type][SMP_T_SINT])
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002350 return 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002351 if (!sample_casts[smp->data.type][SMP_T_SINT](smp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002352 return 0;
2353 return 1;
2354 default:
2355 return 0;
2356 }
2357}
2358
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002359/* Takes a SINT on input, applies a binary twos complement and returns the SINT
Willy Tarreau97707872015-01-27 15:12:13 +01002360 * result.
2361 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002362static int sample_conv_binary_cpl(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002363{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002364 smp->data.u.sint = ~smp->data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002365 return 1;
2366}
2367
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002368/* Takes a SINT on input, applies a binary "and" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002369 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002370 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002371static int sample_conv_binary_and(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002372{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002373 struct sample tmp;
2374
Willy Tarreau7560dd42016-03-10 16:28:58 +01002375 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002376 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002377 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002378 smp->data.u.sint &= tmp.data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002379 return 1;
2380}
2381
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002382/* Takes a SINT on input, applies a binary "or" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002383 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002384 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002385static int sample_conv_binary_or(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002386{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002387 struct sample tmp;
2388
Willy Tarreau7560dd42016-03-10 16:28:58 +01002389 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002390 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002391 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002392 smp->data.u.sint |= tmp.data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002393 return 1;
2394}
2395
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002396/* Takes a SINT on input, applies a binary "xor" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002397 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002398 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002399static int sample_conv_binary_xor(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002400{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002401 struct sample tmp;
2402
Willy Tarreau7560dd42016-03-10 16:28:58 +01002403 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002404 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002405 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002406 smp->data.u.sint ^= tmp.data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002407 return 1;
2408}
2409
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002410static inline long long int arith_add(long long int a, long long int b)
2411{
2412 /* Prevent overflow and makes capped calculus.
2413 * We must ensure that the check calculus doesn't
2414 * exceed the signed 64 bits limits.
2415 *
2416 * +----------+----------+
2417 * | a<0 | a>=0 |
2418 * +------+----------+----------+
2419 * | b<0 | MIN-a>b | no check |
2420 * +------+----------+----------+
2421 * | b>=0 | no check | MAX-a<b |
2422 * +------+----------+----------+
2423 */
2424 if ((a ^ b) >= 0) {
2425 /* signs are differents. */
2426 if (a < 0) {
2427 if (LLONG_MIN - a > b)
2428 return LLONG_MIN;
2429 }
2430 if (LLONG_MAX - a < b)
2431 return LLONG_MAX;
2432 }
2433 return a + b;
2434}
2435
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002436/* Takes a SINT on input, applies an arithmetic "add" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002437 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002438 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002439static int sample_conv_arith_add(const struct arg *arg_p, struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002440{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002441 struct sample tmp;
2442
Willy Tarreau7560dd42016-03-10 16:28:58 +01002443 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002444 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002445 return 0;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002446 smp->data.u.sint = arith_add(smp->data.u.sint, tmp.data.u.sint);
Willy Tarreau97707872015-01-27 15:12:13 +01002447 return 1;
2448}
2449
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002450/* Takes a SINT on input, applies an arithmetic "sub" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002451 * arg_p or in the variable described in arg_p, and returns the SINT result.
Willy Tarreau97707872015-01-27 15:12:13 +01002452 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002453static int sample_conv_arith_sub(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002454 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002455{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002456 struct sample tmp;
2457
Willy Tarreau7560dd42016-03-10 16:28:58 +01002458 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002459 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002460 return 0;
2461
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002462 /* We cannot represent -LLONG_MIN because abs(LLONG_MIN) is greater
2463 * than abs(LLONG_MAX). So, the following code use LLONG_MAX in place
2464 * of -LLONG_MIN and correct the result.
2465 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002466 if (tmp.data.u.sint == LLONG_MIN) {
2467 smp->data.u.sint = arith_add(smp->data.u.sint, LLONG_MAX);
2468 if (smp->data.u.sint < LLONG_MAX)
2469 smp->data.u.sint++;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002470 return 1;
2471 }
2472
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002473 /* standard subtraction: we use the "add" function and negate
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002474 * the second operand.
2475 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002476 smp->data.u.sint = arith_add(smp->data.u.sint, -tmp.data.u.sint);
Willy Tarreau97707872015-01-27 15:12:13 +01002477 return 1;
2478}
2479
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002480/* Takes a SINT on input, applies an arithmetic "mul" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002481 * arg_p or in the variable described in arg_p, and returns the SINT result.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002482 * If the result makes an overflow, then the largest possible quantity is
2483 * returned.
Willy Tarreau97707872015-01-27 15:12:13 +01002484 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002485static int sample_conv_arith_mul(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002486 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002487{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002488 struct sample tmp;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002489 long long int c;
2490
Willy Tarreau7560dd42016-03-10 16:28:58 +01002491 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002492 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002493 return 0;
2494
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002495 /* prevent divide by 0 during the check */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002496 if (!smp->data.u.sint || !tmp.data.u.sint) {
2497 smp->data.u.sint = 0;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002498 return 1;
2499 }
2500
2501 /* The multiply between LLONG_MIN and -1 returns a
2502 * "floting point exception".
2503 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002504 if (smp->data.u.sint == LLONG_MIN && tmp.data.u.sint == -1) {
2505 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002506 return 1;
2507 }
2508
2509 /* execute standard multiplication. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002510 c = smp->data.u.sint * tmp.data.u.sint;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002511
2512 /* check for overflow and makes capped multiply. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002513 if (smp->data.u.sint != c / tmp.data.u.sint) {
2514 if ((smp->data.u.sint < 0) == (tmp.data.u.sint < 0)) {
2515 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002516 return 1;
2517 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002518 smp->data.u.sint = LLONG_MIN;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002519 return 1;
2520 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002521 smp->data.u.sint = c;
Willy Tarreau97707872015-01-27 15:12:13 +01002522 return 1;
2523}
2524
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002525/* Takes a SINT on input, applies an arithmetic "div" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002526 * arg_p or in the variable described in arg_p, and returns the SINT result.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002527 * If arg_p makes the result overflow, then the largest possible quantity is
2528 * returned.
Willy Tarreau97707872015-01-27 15:12:13 +01002529 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002530static int sample_conv_arith_div(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002531 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002532{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002533 struct sample tmp;
2534
Willy Tarreau7560dd42016-03-10 16:28:58 +01002535 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002536 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002537 return 0;
2538
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002539 if (tmp.data.u.sint) {
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002540 /* The divide between LLONG_MIN and -1 returns a
2541 * "floting point exception".
2542 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002543 if (smp->data.u.sint == LLONG_MIN && tmp.data.u.sint == -1) {
2544 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002545 return 1;
2546 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002547 smp->data.u.sint /= tmp.data.u.sint;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002548 return 1;
2549 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002550 smp->data.u.sint = LLONG_MAX;
Willy Tarreau97707872015-01-27 15:12:13 +01002551 return 1;
2552}
2553
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002554/* Takes a SINT on input, applies an arithmetic "mod" with the SINT directly in
Joseph Herlant757f5ad2018-11-15 12:14:56 -08002555 * arg_p or in the variable described in arg_p, and returns the SINT result.
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002556 * If arg_p makes the result overflow, then 0 is returned.
Willy Tarreau97707872015-01-27 15:12:13 +01002557 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002558static int sample_conv_arith_mod(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002559 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002560{
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002561 struct sample tmp;
2562
Willy Tarreau7560dd42016-03-10 16:28:58 +01002563 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
Willy Tarreau6204cd92016-03-10 16:33:04 +01002564 if (!sample_conv_var2smp(arg_p, &tmp))
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02002565 return 0;
2566
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002567 if (tmp.data.u.sint) {
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002568 /* The divide between LLONG_MIN and -1 returns a
2569 * "floting point exception".
2570 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002571 if (smp->data.u.sint == LLONG_MIN && tmp.data.u.sint == -1) {
2572 smp->data.u.sint = 0;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002573 return 1;
2574 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002575 smp->data.u.sint %= tmp.data.u.sint;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002576 return 1;
2577 }
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002578 smp->data.u.sint = 0;
Willy Tarreau97707872015-01-27 15:12:13 +01002579 return 1;
2580}
2581
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002582/* Takes an SINT on input, applies an arithmetic "neg" and returns the SINT
Willy Tarreau97707872015-01-27 15:12:13 +01002583 * result.
2584 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002585static int sample_conv_arith_neg(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002586 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002587{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002588 if (smp->data.u.sint == LLONG_MIN)
2589 smp->data.u.sint = LLONG_MAX;
Thierry FOURNIER00c005c2015-07-08 01:10:21 +02002590 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002591 smp->data.u.sint = -smp->data.u.sint;
Willy Tarreau97707872015-01-27 15:12:13 +01002592 return 1;
2593}
2594
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002595/* Takes a SINT on input, returns true is the value is non-null, otherwise
Willy Tarreau97707872015-01-27 15:12:13 +01002596 * false. The output is a BOOL.
2597 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002598static int sample_conv_arith_bool(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002599 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002600{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002601 smp->data.u.sint = !!smp->data.u.sint;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002602 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002603 return 1;
2604}
2605
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002606/* Takes a SINT on input, returns false is the value is non-null, otherwise
Willy Tarreau97707872015-01-27 15:12:13 +01002607 * truee. The output is a BOOL.
2608 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002609static int sample_conv_arith_not(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002610 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002611{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002612 smp->data.u.sint = !smp->data.u.sint;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002613 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002614 return 1;
2615}
2616
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002617/* Takes a SINT on input, returns true is the value is odd, otherwise false.
Willy Tarreau97707872015-01-27 15:12:13 +01002618 * The output is a BOOL.
2619 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002620static int sample_conv_arith_odd(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002621 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002622{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002623 smp->data.u.sint = smp->data.u.sint & 1;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002624 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002625 return 1;
2626}
2627
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02002628/* Takes a SINT on input, returns true is the value is even, otherwise false.
Willy Tarreau97707872015-01-27 15:12:13 +01002629 * The output is a BOOL.
2630 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +02002631static int sample_conv_arith_even(const struct arg *arg_p,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +01002632 struct sample *smp, void *private)
Willy Tarreau97707872015-01-27 15:12:13 +01002633{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002634 smp->data.u.sint = !(smp->data.u.sint & 1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002635 smp->data.type = SMP_T_BOOL;
Willy Tarreau97707872015-01-27 15:12:13 +01002636 return 1;
2637}
2638
Willy Tarreau280f42b2018-02-19 15:34:12 +01002639/* appends an optional const string, an optional variable contents and another
2640 * optional const string to an existing string.
2641 */
2642static int sample_conv_concat(const struct arg *arg_p, struct sample *smp, void *private)
2643{
Willy Tarreau83061a82018-07-13 11:56:34 +02002644 struct buffer *trash;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002645 struct sample tmp;
2646 int max;
2647
2648 trash = get_trash_chunk();
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002649 trash->data = smp->data.u.str.data;
2650 if (trash->data > trash->size - 1)
2651 trash->data = trash->size - 1;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002652
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002653 memcpy(trash->area, smp->data.u.str.area, trash->data);
2654 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002655
2656 /* append first string */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002657 max = arg_p[0].data.str.data;
2658 if (max > trash->size - 1 - trash->data)
2659 max = trash->size - 1 - trash->data;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002660
2661 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002662 memcpy(trash->area + trash->data, arg_p[0].data.str.area, max);
2663 trash->data += max;
2664 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002665 }
2666
2667 /* append second string (variable) if it's found and we can turn it
2668 * into a string.
2669 */
2670 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
2671 if (arg_p[1].type == ARGT_VAR && vars_get_by_desc(&arg_p[1].data.var, &tmp) &&
2672 (sample_casts[tmp.data.type][SMP_T_STR] == c_none ||
2673 sample_casts[tmp.data.type][SMP_T_STR](&tmp))) {
2674
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002675 max = tmp.data.u.str.data;
2676 if (max > trash->size - 1 - trash->data)
2677 max = trash->size - 1 - trash->data;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002678
2679 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002680 memcpy(trash->area + trash->data, tmp.data.u.str.area,
2681 max);
2682 trash->data += max;
2683 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002684 }
2685 }
2686
2687 /* append third string */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002688 max = arg_p[2].data.str.data;
2689 if (max > trash->size - 1 - trash->data)
2690 max = trash->size - 1 - trash->data;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002691
2692 if (max) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002693 memcpy(trash->area + trash->data, arg_p[2].data.str.area, max);
2694 trash->data += max;
2695 trash->area[trash->data] = 0;
Willy Tarreau280f42b2018-02-19 15:34:12 +01002696 }
2697
2698 smp->data.u.str = *trash;
2699 smp->data.type = SMP_T_STR;
2700 return 1;
2701}
2702
2703/* This function checks the "concat" converter's arguments and extracts the
2704 * variable name and its scope.
2705 */
2706static int smp_check_concat(struct arg *args, struct sample_conv *conv,
2707 const char *file, int line, char **err)
2708{
2709 /* Try to decode a variable. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002710 if (args[1].data.str.data > 0 && !vars_check_arg(&args[1], NULL)) {
2711 memprintf(err, "failed to register variable name '%s'",
2712 args[1].data.str.area);
Willy Tarreau280f42b2018-02-19 15:34:12 +01002713 return 0;
2714 }
2715 return 1;
2716}
2717
Tim Duesterhusca097c12018-04-27 21:18:45 +02002718/* compares string with a variable containing a string. Return value
2719 * is compatible with strcmp(3)'s return value.
2720 */
2721static int sample_conv_strcmp(const struct arg *arg_p, struct sample *smp, void *private)
2722{
2723 struct sample tmp;
2724 int max, result;
2725
2726 smp_set_owner(&tmp, smp->px, smp->sess, smp->strm, smp->opt);
2727 if (arg_p[0].type != ARGT_VAR)
2728 return 0;
2729 if (!vars_get_by_desc(&arg_p[0].data.var, &tmp))
2730 return 0;
2731 if (!sample_casts[tmp.data.type][SMP_T_STR](&tmp))
2732 return 0;
2733
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002734 max = MIN(smp->data.u.str.data, tmp.data.u.str.data);
2735 result = strncmp(smp->data.u.str.area, tmp.data.u.str.area, max);
Tim Duesterhusca097c12018-04-27 21:18:45 +02002736 if (result == 0) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002737 if (smp->data.u.str.data != tmp.data.u.str.data) {
2738 if (smp->data.u.str.data < tmp.data.u.str.data) {
Tim Duesterhusca097c12018-04-27 21:18:45 +02002739 result = -1;
2740 }
2741 else {
2742 result = 1;
2743 }
2744 }
2745 }
2746
2747 smp->data.u.sint = result;
2748 smp->data.type = SMP_T_SINT;
2749 return 1;
2750}
2751
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002752#define GRPC_MSG_COMPRESS_FLAG_SZ 1 /* 1 byte */
2753#define GRPC_MSG_LENGTH_SZ 4 /* 4 bytes */
2754#define GRPC_MSG_HEADER_SZ (GRPC_MSG_COMPRESS_FLAG_SZ + GRPC_MSG_LENGTH_SZ)
2755
2756/*
2757 * Extract the field value of an input binary sample. Takes a mandatory argument:
2758 * the protocol buffers field identifier (dotted notation) internally represented
2759 * as an array of unsigned integers and its size.
2760 * Return 1 if the field was found, 0 if not.
2761 */
2762static int sample_conv_ungrpc(const struct arg *arg_p, struct sample *smp, void *private)
2763{
2764 unsigned char *pos;
2765 size_t grpc_left;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002766
2767 pos = (unsigned char *)smp->data.u.str.area;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002768 grpc_left = smp->data.u.str.data;
2769
Frédéric Lécaille7c93e882019-03-04 07:33:41 +01002770 while (grpc_left > GRPC_MSG_HEADER_SZ) {
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002771 size_t grpc_msg_len, left;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002772
2773 grpc_msg_len = left = ntohl(*(uint32_t *)(pos + GRPC_MSG_COMPRESS_FLAG_SZ));
2774
2775 pos += GRPC_MSG_HEADER_SZ;
2776 grpc_left -= GRPC_MSG_HEADER_SZ;
2777
2778 if (grpc_left < left)
2779 return 0;
2780
Frédéric Lécaille5f33f852019-03-06 08:03:44 +01002781 if (protobuf_field_lookup(arg_p, smp, &pos, &left))
2782 return 1;
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002783
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01002784 grpc_left -= grpc_msg_len;
2785 }
2786
2787 return 0;
2788}
2789
Frédéric Lécaillebfe61382019-03-06 14:34:36 +01002790static int sample_conv_protobuf(const struct arg *arg_p, struct sample *smp, void *private)
2791{
2792 unsigned char *pos;
2793 size_t left;
2794
2795 pos = (unsigned char *)smp->data.u.str.area;
2796 left = smp->data.u.str.data;
2797
2798 return protobuf_field_lookup(arg_p, smp, &pos, &left);
2799}
2800
2801static int sample_conv_protobuf_check(struct arg *args, struct sample_conv *conv,
2802 const char *file, int line, char **err)
Frédéric Lécaille756d97f2019-03-04 19:03:48 +01002803{
2804 if (!args[1].type) {
2805 args[1].type = ARGT_SINT;
2806 args[1].data.sint = PBUF_T_BINARY;
2807 }
2808 else {
2809 int pbuf_type;
2810
2811 pbuf_type = protobuf_type(args[1].data.str.area);
2812 if (pbuf_type == -1) {
2813 memprintf(err, "Wrong protocol buffer type '%s'", args[1].data.str.area);
2814 return 0;
2815 }
2816
2817 args[1].type = ARGT_SINT;
2818 args[1].data.sint = pbuf_type;
2819 }
2820
2821 return 1;
2822}
2823
Tim Duesterhusca097c12018-04-27 21:18:45 +02002824/* This function checks the "strcmp" converter's arguments and extracts the
2825 * variable name and its scope.
2826 */
2827static int smp_check_strcmp(struct arg *args, struct sample_conv *conv,
2828 const char *file, int line, char **err)
2829{
2830 /* Try to decode a variable. */
2831 if (vars_check_arg(&args[0], NULL))
2832 return 1;
2833
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002834 memprintf(err, "failed to register variable name '%s'",
2835 args[0].data.str.area);
Tim Duesterhusca097c12018-04-27 21:18:45 +02002836 return 0;
2837}
2838
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002839/************************************************************************/
2840/* All supported sample fetch functions must be declared here */
2841/************************************************************************/
2842
2843/* force TRUE to be returned at the fetch level */
2844static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002845smp_fetch_true(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002846{
Willy Tarreau280f42b2018-02-19 15:34:12 +01002847 if (!smp_make_rw(smp))
2848 return 0;
2849
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002850 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002851 smp->data.u.sint = 1;
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002852 return 1;
2853}
2854
2855/* force FALSE to be returned at the fetch level */
2856static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002857smp_fetch_false(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002858{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002859 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002860 smp->data.u.sint = 0;
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002861 return 1;
2862}
2863
2864/* retrieve environment variable $1 as a string */
2865static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002866smp_fetch_env(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002867{
2868 char *env;
2869
2870 if (!args || args[0].type != ARGT_STR)
2871 return 0;
2872
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002873 env = getenv(args[0].data.str.area);
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002874 if (!env)
2875 return 0;
2876
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002877 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01002878 smp->flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002879 smp->data.u.str.area = env;
2880 smp->data.u.str.data = strlen(env);
Willy Tarreau5b8ad222013-07-25 12:17:57 +02002881 return 1;
2882}
2883
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002884/* retrieve the current local date in epoch time, and applies an optional offset
2885 * of args[0] seconds.
2886 */
2887static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002888smp_fetch_date(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002889{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002890 smp->data.u.sint = date.tv_sec;
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002891
2892 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002893 if (args && args[0].type == ARGT_SINT)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002894 smp->data.u.sint += args[0].data.sint;
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002895
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002896 smp->data.type = SMP_T_SINT;
Willy Tarreau6236d3a2013-07-25 14:28:25 +02002897 smp->flags |= SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
2898 return 1;
2899}
2900
Etienne Carrierea792a0a2018-01-17 13:43:24 +01002901/* retrieve the current microsecond part of the date */
2902static int
2903smp_fetch_date_us(const struct arg *args, struct sample *smp, const char *kw, void *private)
2904{
2905 smp->data.u.sint = date.tv_usec;
2906 smp->data.type = SMP_T_SINT;
2907 smp->flags |= SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
2908 return 1;
2909}
2910
2911
Nenad Merdanovic807a6e72017-03-12 22:00:00 +01002912/* returns the hostname */
2913static int
2914smp_fetch_hostname(const struct arg *args, struct sample *smp, const char *kw, void *private)
2915{
2916 smp->data.type = SMP_T_STR;
2917 smp->flags = SMP_F_CONST;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002918 smp->data.u.str.area = hostname;
2919 smp->data.u.str.data = strlen(hostname);
Nenad Merdanovic807a6e72017-03-12 22:00:00 +01002920 return 1;
2921}
2922
Willy Tarreau0f30d262014-11-24 16:02:05 +01002923/* returns the number of processes */
2924static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002925smp_fetch_nbproc(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau0f30d262014-11-24 16:02:05 +01002926{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002927 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002928 smp->data.u.sint = global.nbproc;
Willy Tarreau0f30d262014-11-24 16:02:05 +01002929 return 1;
2930}
2931
2932/* returns the number of the current process (between 1 and nbproc */
2933static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002934smp_fetch_proc(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau0f30d262014-11-24 16:02:05 +01002935{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002936 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002937 smp->data.u.sint = relative_pid;
Willy Tarreau0f30d262014-11-24 16:02:05 +01002938 return 1;
2939}
2940
Christopher Faulet34adb2a2017-11-21 21:45:38 +01002941/* returns the number of the current thread (between 1 and nbthread */
2942static int
2943smp_fetch_thread(const struct arg *args, struct sample *smp, const char *kw, void *private)
2944{
2945 smp->data.type = SMP_T_SINT;
2946 smp->data.u.sint = tid;
2947 return 1;
2948}
2949
Willy Tarreau84310e22014-02-14 11:59:04 +01002950/* generate a random 32-bit integer for whatever purpose, with an optional
2951 * range specified in argument.
2952 */
2953static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002954smp_fetch_rand(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau84310e22014-02-14 11:59:04 +01002955{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002956 smp->data.u.sint = random();
Willy Tarreau84310e22014-02-14 11:59:04 +01002957
2958 /* reduce if needed. Don't do a modulo, use all bits! */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02002959 if (args && args[0].type == ARGT_SINT)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002960 smp->data.u.sint = (smp->data.u.sint * args[0].data.sint) / ((u64)RAND_MAX+1);
Willy Tarreau84310e22014-02-14 11:59:04 +01002961
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002962 smp->data.type = SMP_T_SINT;
Willy Tarreau84310e22014-02-14 11:59:04 +01002963 smp->flags |= SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
2964 return 1;
2965}
2966
Willy Tarreau0f30d262014-11-24 16:02:05 +01002967/* returns true if the current process is stopping */
2968static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +02002969smp_fetch_stopping(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau0f30d262014-11-24 16:02:05 +01002970{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02002971 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02002972 smp->data.u.sint = stopping;
Willy Tarreau0f30d262014-11-24 16:02:05 +01002973 return 1;
2974}
2975
Willy Tarreau70fe9442018-11-22 16:07:39 +01002976/* returns the number of calls of the current stream's process_stream() */
2977static int
2978smp_fetch_cpu_calls(const struct arg *args, struct sample *smp, const char *kw, void *private)
2979{
2980 smp->data.type = SMP_T_SINT;
2981 smp->data.u.sint = smp->strm->task->calls;
2982 return 1;
2983}
2984
2985/* returns the average number of nanoseconds spent processing the stream per call */
2986static int
2987smp_fetch_cpu_ns_avg(const struct arg *args, struct sample *smp, const char *kw, void *private)
2988{
2989 smp->data.type = SMP_T_SINT;
2990 smp->data.u.sint = smp->strm->task->calls ? smp->strm->task->cpu_time / smp->strm->task->calls : 0;
2991 return 1;
2992}
2993
2994/* returns the total number of nanoseconds spent processing the stream */
2995static int
2996smp_fetch_cpu_ns_tot(const struct arg *args, struct sample *smp, const char *kw, void *private)
2997{
2998 smp->data.type = SMP_T_SINT;
2999 smp->data.u.sint = smp->strm->task->cpu_time;
3000 return 1;
3001}
3002
3003/* returns the average number of nanoseconds per call spent waiting for other tasks to be processed */
3004static int
3005smp_fetch_lat_ns_avg(const struct arg *args, struct sample *smp, const char *kw, void *private)
3006{
3007 smp->data.type = SMP_T_SINT;
3008 smp->data.u.sint = smp->strm->task->calls ? smp->strm->task->lat_time / smp->strm->task->calls : 0;
3009 return 1;
3010}
3011
3012/* returns the total number of nanoseconds per call spent waiting for other tasks to be processed */
3013static int
3014smp_fetch_lat_ns_tot(const struct arg *args, struct sample *smp, const char *kw, void *private)
3015{
3016 smp->data.type = SMP_T_SINT;
3017 smp->data.u.sint = smp->strm->task->lat_time;
3018 return 1;
3019}
3020
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003021static int smp_fetch_const_str(const struct arg *args, struct sample *smp, const char *kw, void *private)
3022{
3023 smp->flags |= SMP_F_CONST;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003024 smp->data.type = SMP_T_STR;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003025 smp->data.u.str.area = args[0].data.str.area;
3026 smp->data.u.str.data = args[0].data.str.data;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003027 return 1;
3028}
3029
3030static int smp_check_const_bool(struct arg *args, char **err)
3031{
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003032 if (strcasecmp(args[0].data.str.area, "true") == 0 ||
3033 strcasecmp(args[0].data.str.area, "1") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003034 args[0].type = ARGT_SINT;
3035 args[0].data.sint = 1;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003036 return 1;
3037 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003038 if (strcasecmp(args[0].data.str.area, "false") == 0 ||
3039 strcasecmp(args[0].data.str.area, "0") == 0) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003040 args[0].type = ARGT_SINT;
3041 args[0].data.sint = 0;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003042 return 1;
3043 }
3044 memprintf(err, "Expects 'true', 'false', '0' or '1'");
3045 return 0;
3046}
3047
3048static int smp_fetch_const_bool(const struct arg *args, struct sample *smp, const char *kw, void *private)
3049{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003050 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003051 smp->data.u.sint = args[0].data.sint;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003052 return 1;
3053}
3054
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003055static int smp_fetch_const_int(const struct arg *args, struct sample *smp, const char *kw, void *private)
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003056{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003057 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003058 smp->data.u.sint = args[0].data.sint;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003059 return 1;
3060}
3061
3062static int smp_fetch_const_ipv4(const struct arg *args, struct sample *smp, const char *kw, void *private)
3063{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003064 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003065 smp->data.u.ipv4 = args[0].data.ipv4;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003066 return 1;
3067}
3068
3069static int smp_fetch_const_ipv6(const struct arg *args, struct sample *smp, const char *kw, void *private)
3070{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003071 smp->data.type = SMP_T_IPV6;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003072 smp->data.u.ipv6 = args[0].data.ipv6;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003073 return 1;
3074}
3075
3076static int smp_check_const_bin(struct arg *args, char **err)
3077{
David Carlier64a16ab2016-04-08 10:37:02 +01003078 char *binstr = NULL;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003079 int binstrlen;
3080
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003081 if (!parse_binary(args[0].data.str.area, &binstr, &binstrlen, err))
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003082 return 0;
3083 args[0].type = ARGT_STR;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003084 args[0].data.str.area = binstr;
3085 args[0].data.str.data = binstrlen;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003086 return 1;
3087}
3088
3089static int smp_fetch_const_bin(const struct arg *args, struct sample *smp, const char *kw, void *private)
3090{
3091 smp->flags |= SMP_F_CONST;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003092 smp->data.type = SMP_T_BIN;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003093 smp->data.u.str.area = args[0].data.str.area;
3094 smp->data.u.str.data = args[0].data.str.data;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003095 return 1;
3096}
3097
3098static int smp_check_const_meth(struct arg *args, char **err)
3099{
3100 enum http_meth_t meth;
3101 int i;
3102
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003103 meth = find_http_meth(args[0].data.str.area, args[0].data.str.data);
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003104 if (meth != HTTP_METH_OTHER) {
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003105 args[0].type = ARGT_SINT;
3106 args[0].data.sint = meth;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003107 } else {
3108 /* Check method avalaibility. A methos is a token defined as :
3109 * tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." /
3110 * "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
3111 * token = 1*tchar
3112 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003113 for (i = 0; i < args[0].data.str.data; i++) {
3114 if (!HTTP_IS_TOKEN(args[0].data.str.area[i])) {
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003115 memprintf(err, "expects valid method.");
3116 return 0;
3117 }
3118 }
3119 }
3120 return 1;
3121}
3122
3123static int smp_fetch_const_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
3124{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +02003125 smp->data.type = SMP_T_METH;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003126 if (args[0].type == ARGT_SINT) {
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003127 smp->flags &= ~SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003128 smp->data.u.meth.meth = args[0].data.sint;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003129 smp->data.u.meth.str.area = "";
3130 smp->data.u.meth.str.data = 0;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003131 } else {
3132 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +02003133 smp->data.u.meth.meth = HTTP_METH_OTHER;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003134 smp->data.u.meth.str.area = args[0].data.str.area;
3135 smp->data.u.meth.str.data = args[0].data.str.data;
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003136 }
3137 return 1;
3138}
3139
Willy Tarreau5b8ad222013-07-25 12:17:57 +02003140/* Note: must not be declared <const> as its list will be overwritten.
3141 * Note: fetches that may return multiple types must be declared as the lowest
3142 * common denominator, the type that can be casted into all other ones. For
3143 * instance IPv4/IPv6 must be declared IPv4.
3144 */
3145static struct sample_fetch_kw_list smp_kws = {ILH, {
3146 { "always_false", smp_fetch_false, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
3147 { "always_true", smp_fetch_true, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +01003148 { "env", smp_fetch_env, ARG1(1,STR), NULL, SMP_T_STR, SMP_USE_INTRN },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003149 { "date", smp_fetch_date, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_USE_INTRN },
Etienne Carrierea792a0a2018-01-17 13:43:24 +01003150 { "date_us", smp_fetch_date_us, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Nenad Merdanovic807a6e72017-03-12 22:00:00 +01003151 { "hostname", smp_fetch_hostname, 0, NULL, SMP_T_STR, SMP_USE_INTRN },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003152 { "nbproc", smp_fetch_nbproc,0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3153 { "proc", smp_fetch_proc, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Christopher Faulet34adb2a2017-11-21 21:45:38 +01003154 { "thread", smp_fetch_thread, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003155 { "rand", smp_fetch_rand, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_USE_INTRN },
Willy Tarreau0f30d262014-11-24 16:02:05 +01003156 { "stopping", smp_fetch_stopping, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
Willy Tarreau70fe9442018-11-22 16:07:39 +01003157 { "stopping", smp_fetch_stopping, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },
3158
3159 { "cpu_calls", smp_fetch_cpu_calls, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3160 { "cpu_ns_avg", smp_fetch_cpu_ns_avg, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3161 { "cpu_ns_tot", smp_fetch_cpu_ns_tot, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3162 { "lat_ns_avg", smp_fetch_lat_ns_avg, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
3163 { "lat_ns_tot", smp_fetch_lat_ns_tot, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003164
3165 { "str", smp_fetch_const_str, ARG1(1,STR), NULL , SMP_T_STR, SMP_USE_INTRN },
3166 { "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 +02003167 { "int", smp_fetch_const_int, ARG1(1,SINT), NULL , SMP_T_SINT, SMP_USE_INTRN },
Thierry FOURNIERcc103292015-06-06 19:30:17 +02003168 { "ipv4", smp_fetch_const_ipv4, ARG1(1,IPV4), NULL , SMP_T_IPV4, SMP_USE_INTRN },
3169 { "ipv6", smp_fetch_const_ipv6, ARG1(1,IPV6), NULL , SMP_T_IPV6, SMP_USE_INTRN },
3170 { "bin", smp_fetch_const_bin, ARG1(1,STR), smp_check_const_bin , SMP_T_BIN, SMP_USE_INTRN },
3171 { "meth", smp_fetch_const_meth, ARG1(1,STR), smp_check_const_meth, SMP_T_METH, SMP_USE_INTRN },
3172
Willy Tarreau5b8ad222013-07-25 12:17:57 +02003173 { /* END */ },
3174}};
3175
Willy Tarreau0108d902018-11-25 19:14:37 +01003176INITCALL1(STG_REGISTER, sample_register_fetches, &smp_kws);
3177
Emeric Brun107ca302010-01-04 16:16:05 +01003178/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +02003179static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER9687c772015-05-07 15:46:29 +02003180#ifdef DEBUG_EXPR
3181 { "debug", sample_conv_debug, 0, NULL, SMP_T_ANY, SMP_T_ANY },
3182#endif
3183
Holger Just1bfc24b2017-05-06 00:56:53 +02003184 { "b64dec", sample_conv_base642bin,0, NULL, SMP_T_STR, SMP_T_BIN },
Emeric Brun53d1a982014-04-30 18:21:37 +02003185 { "base64", sample_conv_bin2base64,0, NULL, SMP_T_BIN, SMP_T_STR },
Willy Tarreau12785782012-04-27 21:37:17 +02003186 { "upper", sample_conv_str2upper, 0, NULL, SMP_T_STR, SMP_T_STR },
3187 { "lower", sample_conv_str2lower, 0, NULL, SMP_T_STR, SMP_T_STR },
Willy Tarreau60a2ee72017-12-15 07:13:48 +01003188 { "length", sample_conv_length, 0, NULL, SMP_T_STR, SMP_T_SINT },
Thierry FOURNIER2f49d6d2014-03-12 15:01:52 +01003189 { "hex", sample_conv_bin2hex, 0, NULL, SMP_T_BIN, SMP_T_STR },
Dragan Dosen3f957b22017-10-24 09:27:34 +02003190 { "hex2i", sample_conv_hex2int, 0, NULL, SMP_T_STR, SMP_T_SINT },
Tim Duesterhus1478aa72018-01-25 16:24:51 +01003191 { "ipmask", sample_conv_ipmask, ARG2(1,MSK4,MSK6), NULL, SMP_T_ADDR, SMP_T_IPV4 },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +02003192 { "ltime", sample_conv_ltime, ARG2(1,STR,SINT), NULL, SMP_T_SINT, SMP_T_STR },
3193 { "utime", sample_conv_utime, ARG2(1,STR,SINT), NULL, SMP_T_SINT, SMP_T_STR },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003194 { "crc32", sample_conv_crc32, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Emmanuel Hocdet50791a72018-03-21 11:19:01 +01003195 { "crc32c", sample_conv_crc32c, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003196 { "djb2", sample_conv_djb2, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
3197 { "sdbm", sample_conv_sdbm, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
3198 { "wt6", sample_conv_wt6, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Thierry FOURNIER01e09742016-12-26 11:46:11 +01003199 { "xxh32", sample_conv_xxh32, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
3200 { "xxh64", sample_conv_xxh64, ARG1(0,SINT), NULL, SMP_T_BIN, SMP_T_SINT },
Thierry FOURNIER317e1c42014-08-12 10:20:47 +02003201 { "json", sample_conv_json, ARG1(1,STR), sample_conv_json_check, SMP_T_STR, SMP_T_STR },
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +02003202 { "bytes", sample_conv_bytes, ARG2(1,SINT,SINT), NULL, SMP_T_BIN, SMP_T_BIN },
Marcin Deranek9631a282018-04-16 14:30:46 +02003203 { "field", sample_conv_field, ARG3(2,SINT,STR,SINT), sample_conv_field_check, SMP_T_STR, SMP_T_STR },
3204 { "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 +01003205 { "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 +02003206 { "sha1", sample_conv_sha1, 0, NULL, SMP_T_BIN, SMP_T_BIN },
Willy Tarreau280f42b2018-02-19 15:34:12 +01003207 { "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 +02003208 { "strcmp", sample_conv_strcmp, ARG1(1,STR), smp_check_strcmp, SMP_T_STR, SMP_T_SINT },
Frédéric Lécaille50290fb2019-02-27 14:34:51 +01003209
3210 /* gRPC converters. */
Frédéric Lécaillebfe61382019-03-06 14:34:36 +01003211 { "ungrpc", sample_conv_ungrpc, ARG2(1,PBUF_FNUM,STR), sample_conv_protobuf_check, SMP_T_BIN, SMP_T_BIN },
3212 { "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 +01003213
Thierry FOURNIER5d86fae2015-07-07 21:10:16 +02003214 { "and", sample_conv_binary_and, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3215 { "or", sample_conv_binary_or, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3216 { "xor", sample_conv_binary_xor, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3217 { "cpl", sample_conv_binary_cpl, 0, NULL, SMP_T_SINT, SMP_T_SINT },
3218 { "bool", sample_conv_arith_bool, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3219 { "not", sample_conv_arith_not, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3220 { "odd", sample_conv_arith_odd, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3221 { "even", sample_conv_arith_even, 0, NULL, SMP_T_SINT, SMP_T_BOOL },
3222 { "add", sample_conv_arith_add, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3223 { "sub", sample_conv_arith_sub, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3224 { "mul", sample_conv_arith_mul, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3225 { "div", sample_conv_arith_div, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3226 { "mod", sample_conv_arith_mod, ARG1(1,STR), check_operator, SMP_T_SINT, SMP_T_SINT },
3227 { "neg", sample_conv_arith_neg, 0, NULL, SMP_T_SINT, SMP_T_SINT },
Willy Tarreau97707872015-01-27 15:12:13 +01003228
Willy Tarreau9fcb9842012-04-20 14:45:49 +02003229 { NULL, NULL, 0, 0, 0 },
Emeric Brun107ca302010-01-04 16:16:05 +01003230}};
3231
Willy Tarreau0108d902018-11-25 19:14:37 +01003232INITCALL1(STG_REGISTER, sample_register_convs, &sample_conv_kws);