Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Pattern management functions. |
| 3 | * |
| 4 | * Copyright 2000-2013 Willy Tarreau <w@1wt.eu> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <ctype.h> |
| 14 | #include <stdio.h> |
| 15 | |
| 16 | #include <common/config.h> |
| 17 | #include <common/standard.h> |
| 18 | |
| 19 | #include <types/global.h> |
| 20 | #include <types/pattern.h> |
| 21 | |
| 22 | #include <proto/pattern.h> |
Thierry FOURNIER | e3ded59 | 2013-12-06 15:36:54 +0100 | [diff] [blame] | 23 | #include <proto/sample.h> |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 24 | |
| 25 | #include <ebsttree.h> |
| 26 | |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 27 | char *pat_match_names[PAT_MATCH_NUM] = { |
| 28 | [PAT_MATCH_FOUND] = "found", |
| 29 | [PAT_MATCH_BOOL] = "bool", |
| 30 | [PAT_MATCH_INT] = "int", |
| 31 | [PAT_MATCH_IP] = "ip", |
| 32 | [PAT_MATCH_BIN] = "bin", |
| 33 | [PAT_MATCH_LEN] = "len", |
| 34 | [PAT_MATCH_STR] = "str", |
| 35 | [PAT_MATCH_BEG] = "beg", |
| 36 | [PAT_MATCH_SUB] = "sub", |
| 37 | [PAT_MATCH_DIR] = "dir", |
| 38 | [PAT_MATCH_DOM] = "dom", |
| 39 | [PAT_MATCH_END] = "end", |
| 40 | [PAT_MATCH_REG] = "reg", |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 41 | }; |
| 42 | |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 43 | int (*pat_parse_fcts[PAT_MATCH_NUM])(const char *, struct pattern *, char **) = { |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 44 | [PAT_MATCH_FOUND] = pat_parse_nothing, |
| 45 | [PAT_MATCH_BOOL] = pat_parse_nothing, |
| 46 | [PAT_MATCH_INT] = pat_parse_int, |
| 47 | [PAT_MATCH_IP] = pat_parse_ip, |
| 48 | [PAT_MATCH_BIN] = pat_parse_bin, |
Thierry FOURNIER | cc0e0b3 | 2013-12-06 16:56:40 +0100 | [diff] [blame] | 49 | [PAT_MATCH_LEN] = pat_parse_len, |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 50 | [PAT_MATCH_STR] = pat_parse_str, |
| 51 | [PAT_MATCH_BEG] = pat_parse_str, |
| 52 | [PAT_MATCH_SUB] = pat_parse_str, |
| 53 | [PAT_MATCH_DIR] = pat_parse_str, |
| 54 | [PAT_MATCH_DOM] = pat_parse_str, |
| 55 | [PAT_MATCH_END] = pat_parse_str, |
| 56 | [PAT_MATCH_REG] = pat_parse_reg, |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 57 | }; |
| 58 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 59 | int (*pat_index_fcts[PAT_MATCH_NUM])(struct pattern_expr *, struct pattern *, char **) = { |
| 60 | [PAT_MATCH_FOUND] = pat_idx_list_val, |
| 61 | [PAT_MATCH_BOOL] = pat_idx_list_val, |
| 62 | [PAT_MATCH_INT] = pat_idx_list_val, |
| 63 | [PAT_MATCH_IP] = pat_idx_tree_ip, |
| 64 | [PAT_MATCH_BIN] = pat_idx_list_ptr, |
| 65 | [PAT_MATCH_LEN] = pat_idx_list_val, |
| 66 | [PAT_MATCH_STR] = pat_idx_tree_str, |
| 67 | [PAT_MATCH_BEG] = pat_idx_list_str, |
| 68 | [PAT_MATCH_SUB] = pat_idx_list_str, |
| 69 | [PAT_MATCH_DIR] = pat_idx_list_str, |
| 70 | [PAT_MATCH_DOM] = pat_idx_list_str, |
| 71 | [PAT_MATCH_END] = pat_idx_list_str, |
| 72 | [PAT_MATCH_REG] = pat_idx_list_reg, |
| 73 | }; |
| 74 | |
Thierry FOURNIER | b113650 | 2014-01-15 11:38:49 +0100 | [diff] [blame^] | 75 | void (*pat_delete_fcts[PAT_MATCH_NUM])(struct pattern_expr *, struct pattern *) = { |
| 76 | [PAT_MATCH_FOUND] = pat_del_list_val, |
| 77 | [PAT_MATCH_BOOL] = pat_del_list_val, |
| 78 | [PAT_MATCH_INT] = pat_del_list_val, |
| 79 | [PAT_MATCH_IP] = pat_del_tree_ip, |
| 80 | [PAT_MATCH_BIN] = pat_del_list_ptr, |
| 81 | [PAT_MATCH_LEN] = pat_del_list_val, |
| 82 | [PAT_MATCH_STR] = pat_del_tree_str, |
| 83 | [PAT_MATCH_BEG] = pat_del_list_str, |
| 84 | [PAT_MATCH_SUB] = pat_del_list_str, |
| 85 | [PAT_MATCH_DIR] = pat_del_list_str, |
| 86 | [PAT_MATCH_DOM] = pat_del_list_str, |
| 87 | [PAT_MATCH_END] = pat_del_list_str, |
| 88 | [PAT_MATCH_REG] = pat_del_list_reg, |
| 89 | }; |
| 90 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 91 | struct pattern *(*pat_match_fcts[PAT_MATCH_NUM])(struct sample *, struct pattern_expr *, int) = { |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 92 | [PAT_MATCH_FOUND] = NULL, |
| 93 | [PAT_MATCH_BOOL] = pat_match_nothing, |
| 94 | [PAT_MATCH_INT] = pat_match_int, |
| 95 | [PAT_MATCH_IP] = pat_match_ip, |
| 96 | [PAT_MATCH_BIN] = pat_match_bin, |
| 97 | [PAT_MATCH_LEN] = pat_match_len, |
| 98 | [PAT_MATCH_STR] = pat_match_str, |
| 99 | [PAT_MATCH_BEG] = pat_match_beg, |
| 100 | [PAT_MATCH_SUB] = pat_match_sub, |
| 101 | [PAT_MATCH_DIR] = pat_match_dir, |
| 102 | [PAT_MATCH_DOM] = pat_match_dom, |
| 103 | [PAT_MATCH_END] = pat_match_end, |
| 104 | [PAT_MATCH_REG] = pat_match_reg, |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 105 | }; |
| 106 | |
Thierry FOURNIER | e3ded59 | 2013-12-06 15:36:54 +0100 | [diff] [blame] | 107 | /* Just used for checking configuration compatibility */ |
| 108 | int pat_match_types[PAT_MATCH_NUM] = { |
| 109 | [PAT_MATCH_FOUND] = SMP_T_UINT, |
| 110 | [PAT_MATCH_BOOL] = SMP_T_UINT, |
| 111 | [PAT_MATCH_INT] = SMP_T_UINT, |
| 112 | [PAT_MATCH_IP] = SMP_T_ADDR, |
Thierry FOURNIER | 7654c9f | 2013-12-17 00:20:33 +0100 | [diff] [blame] | 113 | [PAT_MATCH_BIN] = SMP_T_BIN, |
| 114 | [PAT_MATCH_LEN] = SMP_T_STR, |
| 115 | [PAT_MATCH_STR] = SMP_T_STR, |
| 116 | [PAT_MATCH_BEG] = SMP_T_STR, |
| 117 | [PAT_MATCH_SUB] = SMP_T_STR, |
| 118 | [PAT_MATCH_DIR] = SMP_T_STR, |
| 119 | [PAT_MATCH_DOM] = SMP_T_STR, |
| 120 | [PAT_MATCH_END] = SMP_T_STR, |
| 121 | [PAT_MATCH_REG] = SMP_T_STR, |
Thierry FOURNIER | e3ded59 | 2013-12-06 15:36:54 +0100 | [diff] [blame] | 122 | }; |
| 123 | |
Thierry FOURNIER | 1794fdf | 2014-01-17 15:25:13 +0100 | [diff] [blame] | 124 | /* this struct is used to return information */ |
| 125 | static struct pattern static_pattern; |
| 126 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 127 | /* |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 128 | * |
| 129 | * The following functions are not exported and are used by internals process |
| 130 | * of pattern matching |
| 131 | * |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 132 | */ |
| 133 | |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 134 | /* Free data allocated by pat_parse_reg */ |
| 135 | static void pat_free_reg(void *ptr) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 136 | { |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 137 | regex_free(ptr); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 138 | } |
| 139 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 140 | /* Background: Fast way to find a zero byte in a word |
| 141 | * http://graphics.stanford.edu/~seander/bithacks.html#ZeroInWord |
| 142 | * hasZeroByte = (v - 0x01010101UL) & ~v & 0x80808080UL; |
| 143 | * |
| 144 | * To look for 4 different byte values, xor the word with those bytes and |
| 145 | * then check for zero bytes: |
| 146 | * |
| 147 | * v = (((unsigned char)c * 0x1010101U) ^ delimiter) |
| 148 | * where <delimiter> is the 4 byte values to look for (as an uint) |
| 149 | * and <c> is the character that is being tested |
| 150 | */ |
| 151 | static inline unsigned int is_delimiter(unsigned char c, unsigned int mask) |
| 152 | { |
| 153 | mask ^= (c * 0x01010101); /* propagate the char to all 4 bytes */ |
| 154 | return (mask - 0x01010101) & ~mask & 0x80808080U; |
| 155 | } |
| 156 | |
| 157 | static inline unsigned int make_4delim(unsigned char d1, unsigned char d2, unsigned char d3, unsigned char d4) |
| 158 | { |
| 159 | return d1 << 24 | d2 << 16 | d3 << 8 | d4; |
| 160 | } |
| 161 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 162 | |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 163 | /* |
| 164 | * |
| 165 | * These functions are exported and may be used by any other component. |
| 166 | * |
| 167 | * The following functions are used for parsing pattern matching |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 168 | * input value. The <text> contain the string to be parsed. <pattern> |
| 169 | * must be a preallocated pattern. The pat_parse_* functions fill this |
| 170 | * structure with the parsed value. <usage> can be PAT_U_COMPILE or |
| 171 | * PAT_U_LOOKUP. If the value PAT_U_COMPILE is used memory is allocated |
| 172 | * for filling the pattern. If the value PAT_U_LOOKUP is set, the parser |
| 173 | * use "trash" or return pointers to the input strings. In both cases, |
| 174 | * the caller must use the value PAT_U_LOOKUP with caution. <err> is |
| 175 | * filled with an error message built with memprintf() function. |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 176 | * |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 177 | * In succes case, the pat_parse_* function return 1. If the function |
| 178 | * fail, it returns 0 and <err> is filled. |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 179 | * |
| 180 | */ |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 181 | |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 182 | /* ignore the current line */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 183 | int pat_parse_nothing(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 184 | { |
| 185 | return 1; |
| 186 | } |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 187 | |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 188 | /* Parse a string. It is allocated and duplicated. */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 189 | int pat_parse_str(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 190 | { |
Thierry FOURNIER | 7654c9f | 2013-12-17 00:20:33 +0100 | [diff] [blame] | 191 | pattern->type = SMP_T_STR; |
| 192 | pattern->expect_type = SMP_T_STR; |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 193 | pattern->ptr.str = (char *)text; |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 194 | pattern->len = strlen(text); |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 195 | return 1; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 196 | } |
| 197 | |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 198 | /* Parse a binary written in hexa. It is allocated. */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 199 | int pat_parse_bin(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 200 | { |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 201 | struct chunk *trash; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 202 | |
Thierry FOURNIER | 7654c9f | 2013-12-17 00:20:33 +0100 | [diff] [blame] | 203 | pattern->type = SMP_T_BIN; |
| 204 | pattern->expect_type = SMP_T_BIN; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 205 | trash = get_trash_chunk(); |
| 206 | pattern->len = trash->size; |
| 207 | pattern->ptr.str = trash->str; |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 208 | return !!parse_binary(text, &pattern->ptr.str, &pattern->len, err); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 209 | } |
| 210 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 211 | /* Parse a regex. It is allocated. */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 212 | int pat_parse_reg(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 213 | { |
Thierry FOURNIER | 0b2fe4a | 2013-12-06 20:33:50 +0100 | [diff] [blame] | 214 | struct chunk *trash; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 215 | |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 216 | trash = get_trash_chunk(); |
| 217 | if (trash->size < sizeof(*pattern->ptr.reg)) { |
| 218 | memprintf(err, "no space avalaible in the buffer. expect %d, provides %d", |
| 219 | (int)sizeof(*pattern->ptr.reg), trash->size); |
| 220 | return 0; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 221 | } |
| 222 | |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 223 | pattern->ptr.reg = (struct my_regex *)trash->str; |
| 224 | pattern->ptr.reg->regstr = (char *)text; |
| 225 | pattern->freeptrbuf = NULL; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 226 | |
Thierry FOURNIER | 7654c9f | 2013-12-17 00:20:33 +0100 | [diff] [blame] | 227 | pattern->expect_type = SMP_T_STR; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 228 | return 1; |
| 229 | } |
| 230 | |
| 231 | /* Parse a range of positive integers delimited by either ':' or '-'. If only |
| 232 | * one integer is read, it is set as both min and max. An operator may be |
| 233 | * specified as the prefix, among this list of 5 : |
| 234 | * |
| 235 | * 0:eq, 1:gt, 2:ge, 3:lt, 4:le |
| 236 | * |
| 237 | * The default operator is "eq". It supports range matching. Ranges are |
| 238 | * rejected for other operators. The operator may be changed at any time. |
| 239 | * The operator is stored in the 'opaque' argument. |
| 240 | * |
| 241 | * If err is non-NULL, an error message will be returned there on errors and |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 242 | * the caller will have to free it. The function returns zero on error, and |
| 243 | * non-zero on success. |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 244 | * |
| 245 | */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 246 | int pat_parse_int(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 247 | { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 248 | const char *ptr = text; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 249 | |
| 250 | pattern->type = SMP_T_UINT; |
Thierry FOURNIER | cc0e0b3 | 2013-12-06 16:56:40 +0100 | [diff] [blame] | 251 | pattern->expect_type = SMP_T_UINT; |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 252 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 253 | /* Empty string is not valid */ |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 254 | if (!*text) |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 255 | goto not_valid_range; |
| 256 | |
| 257 | /* Search ':' or '-' separator. */ |
| 258 | while (*ptr != '\0' && *ptr != ':' && *ptr != '-') |
| 259 | ptr++; |
| 260 | |
| 261 | /* If separator not found. */ |
| 262 | if (!*ptr) { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 263 | if (strl2llrc(text, ptr - text, &pattern->val.range.min) != 0) { |
| 264 | memprintf(err, "'%s' is not a number", text); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 265 | return 0; |
| 266 | } |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 267 | pattern->val.range.max = pattern->val.range.min; |
| 268 | pattern->val.range.min_set = 1; |
| 269 | pattern->val.range.max_set = 1; |
| 270 | return 1; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 271 | } |
| 272 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 273 | /* If the separator is the first character. */ |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 274 | if (ptr == text && *(ptr + 1) != '\0') { |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 275 | if (strl2llrc(ptr + 1, strlen(ptr + 1), &pattern->val.range.max) != 0) |
| 276 | goto not_valid_range; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 277 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 278 | pattern->val.range.min_set = 0; |
| 279 | pattern->val.range.max_set = 1; |
| 280 | return 1; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 281 | } |
| 282 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 283 | /* If separator is the last character. */ |
| 284 | if (*(ptr + 1) == '\0') { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 285 | if (strl2llrc(text, ptr - text, &pattern->val.range.min) != 0) |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 286 | goto not_valid_range; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 287 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 288 | pattern->val.range.min_set = 1; |
| 289 | pattern->val.range.max_set = 0; |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 290 | return 1; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 291 | } |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 292 | |
| 293 | /* Else, parse two numbers. */ |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 294 | if (strl2llrc(text, ptr - text, &pattern->val.range.min) != 0) |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 295 | goto not_valid_range; |
| 296 | |
| 297 | if (strl2llrc(ptr + 1, strlen(ptr + 1), &pattern->val.range.max) != 0) |
| 298 | goto not_valid_range; |
| 299 | |
| 300 | if (pattern->val.range.min > pattern->val.range.max) |
| 301 | goto not_valid_range; |
| 302 | |
| 303 | pattern->val.range.min_set = 1; |
| 304 | pattern->val.range.max_set = 1; |
| 305 | return 1; |
| 306 | |
| 307 | not_valid_range: |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 308 | memprintf(err, "'%s' is not a valid number range", text); |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 309 | return 0; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 310 | } |
| 311 | |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 312 | int pat_parse_len(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | cc0e0b3 | 2013-12-06 16:56:40 +0100 | [diff] [blame] | 313 | { |
| 314 | int ret; |
| 315 | |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 316 | ret = pat_parse_int(text, pattern, err); |
Thierry FOURNIER | 7654c9f | 2013-12-17 00:20:33 +0100 | [diff] [blame] | 317 | pattern->expect_type = SMP_T_STR; |
Thierry FOURNIER | cc0e0b3 | 2013-12-06 16:56:40 +0100 | [diff] [blame] | 318 | return ret; |
| 319 | } |
| 320 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 321 | /* Parse a range of positive 2-component versions delimited by either ':' or |
| 322 | * '-'. The version consists in a major and a minor, both of which must be |
| 323 | * smaller than 65536, because internally they will be represented as a 32-bit |
| 324 | * integer. |
| 325 | * If only one version is read, it is set as both min and max. Just like for |
| 326 | * pure integers, an operator may be specified as the prefix, among this list |
| 327 | * of 5 : |
| 328 | * |
| 329 | * 0:eq, 1:gt, 2:ge, 3:lt, 4:le |
| 330 | * |
| 331 | * The default operator is "eq". It supports range matching. Ranges are |
| 332 | * rejected for other operators. The operator may be changed at any time. |
| 333 | * The operator is stored in the 'opaque' argument. This allows constructs |
| 334 | * such as the following one : |
| 335 | * |
| 336 | * acl obsolete_ssl ssl_req_proto lt 3 |
| 337 | * acl unsupported_ssl ssl_req_proto gt 3.1 |
| 338 | * acl valid_ssl ssl_req_proto 3.0-3.1 |
| 339 | * |
| 340 | */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 341 | int pat_parse_dotted_ver(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 342 | { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 343 | const char *ptr = text; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 344 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 345 | pattern->type = SMP_T_UINT; |
| 346 | pattern->expect_type = SMP_T_UINT; |
| 347 | |
| 348 | /* Search ':' or '-' separator. */ |
| 349 | while (*ptr != '\0' && *ptr != ':' && *ptr != '-') |
| 350 | ptr++; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 351 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 352 | /* If separator not found. */ |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 353 | if (*ptr == '\0' && ptr > text) { |
| 354 | if (strl2llrc_dotted(text, ptr-text, &pattern->val.range.min) != 0) { |
| 355 | memprintf(err, "'%s' is not a dotted number", text); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 356 | return 0; |
| 357 | } |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 358 | pattern->val.range.max = pattern->val.range.min; |
| 359 | pattern->val.range.min_set = 1; |
| 360 | pattern->val.range.max_set = 1; |
| 361 | return 1; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 362 | } |
| 363 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 364 | /* If the separator is the first character. */ |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 365 | if (ptr == text && *(ptr+1) != '\0') { |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 366 | if (strl2llrc_dotted(ptr+1, strlen(ptr+1), &pattern->val.range.max) != 0) { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 367 | memprintf(err, "'%s' is not a valid dotted number range", text); |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 368 | return 0; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 369 | } |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 370 | pattern->val.range.min_set = 0; |
| 371 | pattern->val.range.max_set = 1; |
| 372 | return 1; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 373 | } |
| 374 | |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 375 | /* If separator is the last character. */ |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 376 | if (ptr == &text[strlen(text)-1]) { |
| 377 | if (strl2llrc_dotted(text, ptr-text, &pattern->val.range.min) != 0) { |
| 378 | memprintf(err, "'%s' is not a valid dotted number range", text); |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 379 | return 0; |
| 380 | } |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 381 | pattern->val.range.min_set = 1; |
| 382 | pattern->val.range.max_set = 0; |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 383 | return 1; |
| 384 | } |
| 385 | |
| 386 | /* Else, parse two numbers. */ |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 387 | if (strl2llrc_dotted(text, ptr-text, &pattern->val.range.min) != 0) { |
| 388 | memprintf(err, "'%s' is not a valid dotted number range", text); |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 389 | return 0; |
| 390 | } |
| 391 | if (strl2llrc_dotted(ptr+1, strlen(ptr+1), &pattern->val.range.max) != 0) { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 392 | memprintf(err, "'%s' is not a valid dotted number range", text); |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 393 | return 0; |
| 394 | } |
| 395 | if (pattern->val.range.min > pattern->val.range.max) { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 396 | memprintf(err, "'%s' is not a valid dotted number range", text); |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 397 | return 0; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 398 | } |
Thierry FOURNIER | 511e947 | 2014-01-23 17:40:34 +0100 | [diff] [blame] | 399 | pattern->val.range.min_set = 1; |
| 400 | pattern->val.range.max_set = 1; |
| 401 | return 1; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | /* Parse an IP address and an optional mask in the form addr[/mask]. |
| 405 | * The addr may either be an IPv4 address or a hostname. The mask |
| 406 | * may either be a dotted mask or a number of bits. Returns 1 if OK, |
| 407 | * otherwise 0. NOTE: IP address patterns are typed (IPV4/IPV6). |
| 408 | */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 409 | int pat_parse_ip(const char *text, struct pattern *pattern, char **err) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 410 | { |
Thierry FOURNIER | cc0e0b3 | 2013-12-06 16:56:40 +0100 | [diff] [blame] | 411 | pattern->expect_type = SMP_T_ADDR; |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 412 | if (str2net(text, &pattern->val.ipv4.addr, &pattern->val.ipv4.mask)) { |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 413 | pattern->type = SMP_T_IPV4; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 414 | return 1; |
| 415 | } |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 416 | else if (str62net(text, &pattern->val.ipv6.addr, &pattern->val.ipv6.mask)) { |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 417 | pattern->type = SMP_T_IPV6; |
| 418 | return 1; |
| 419 | } |
| 420 | else { |
Thierry FOURNIER | 580c32c | 2014-01-24 10:58:12 +0100 | [diff] [blame] | 421 | memprintf(err, "'%s' is not a valid IPv4 or IPv6 address", text); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 422 | return 0; |
| 423 | } |
| 424 | } |
| 425 | |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 426 | /* |
| 427 | * |
| 428 | * These functions are exported and may be used by any other component. |
| 429 | * |
| 430 | * This fucntion just take a sample <smp> and check if this sample match |
| 431 | * with the pattern <pattern>. This fucntion return just PAT_MATCH or |
| 432 | * PAT_NOMATCH. |
| 433 | * |
| 434 | */ |
| 435 | |
| 436 | /* always return false */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 437 | struct pattern *pat_match_nothing(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 438 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 439 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | |
| 443 | /* NB: For two strings to be identical, it is required that their lengths match */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 444 | struct pattern *pat_match_str(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 445 | { |
| 446 | int icase; |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 447 | struct ebmb_node *node; |
| 448 | char prev; |
| 449 | struct pattern_tree *elt; |
| 450 | struct pattern_list *lst; |
| 451 | struct pattern *pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 452 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 453 | /* convert input to string */ |
| 454 | if (!sample_convert(smp, SMP_T_STR)) |
| 455 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 456 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 457 | /* Lookup a string in the expression's pattern tree. */ |
| 458 | if (!eb_is_empty(&expr->pattern_tree)) { |
| 459 | /* we may have to force a trailing zero on the test pattern */ |
| 460 | prev = smp->data.str.str[smp->data.str.len]; |
| 461 | if (prev) |
| 462 | smp->data.str.str[smp->data.str.len] = '\0'; |
| 463 | node = ebst_lookup(&expr->pattern_tree, smp->data.str.str); |
| 464 | if (prev) |
| 465 | smp->data.str.str[smp->data.str.len] = prev; |
| 466 | |
| 467 | if (node) { |
| 468 | if (fill) { |
| 469 | elt = ebmb_entry(node, struct pattern_tree, node); |
| 470 | static_pattern.smp = elt->smp; |
| 471 | static_pattern.flags = PAT_F_TREE; |
| 472 | static_pattern.type = SMP_T_STR; |
| 473 | static_pattern.ptr.str = (char *)elt->node.key; |
| 474 | } |
| 475 | return &static_pattern; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | /* look in the list */ |
| 480 | list_for_each_entry(lst, &expr->patterns, list) { |
| 481 | pattern = &lst->pat; |
| 482 | |
| 483 | if (pattern->len != smp->data.str.len) |
| 484 | continue; |
| 485 | |
| 486 | icase = pattern->flags & PAT_F_IGNORE_CASE; |
| 487 | if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) == 0) || |
| 488 | (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) == 0)) |
| 489 | return pattern; |
| 490 | } |
| 491 | |
| 492 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 493 | } |
| 494 | |
| 495 | /* NB: For two binaries buf to be identical, it is required that their lengths match */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 496 | struct pattern *pat_match_bin(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 497 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 498 | struct pattern_list *lst; |
| 499 | struct pattern *pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 500 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 501 | /* Convert input to binary. */ |
| 502 | if (!sample_convert(smp, SMP_T_BIN)) |
| 503 | return NULL; |
| 504 | |
| 505 | /* Look in the list. */ |
| 506 | list_for_each_entry(lst, &expr->patterns, list) { |
| 507 | pattern = &lst->pat; |
| 508 | |
| 509 | if (pattern->len != smp->data.str.len) |
| 510 | continue; |
| 511 | |
| 512 | if (memcmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) == 0) |
| 513 | return pattern; |
| 514 | } |
| 515 | |
| 516 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 517 | } |
| 518 | |
| 519 | /* Executes a regex. It temporarily changes the data to add a trailing zero, |
| 520 | * and restores the previous character when leaving. |
| 521 | */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 522 | struct pattern *pat_match_reg(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 523 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 524 | struct pattern_list *lst; |
| 525 | struct pattern *pattern; |
| 526 | |
| 527 | /* convert input to string */ |
| 528 | if (!sample_convert(smp, SMP_T_STR)) |
| 529 | return NULL; |
| 530 | |
| 531 | /* look in the list */ |
| 532 | list_for_each_entry(lst, &expr->patterns, list) { |
| 533 | pattern = &lst->pat; |
| 534 | |
| 535 | if (regex_exec(pattern->ptr.reg, smp->data.str.str, smp->data.str.len) == 0) |
| 536 | return pattern; |
| 537 | } |
| 538 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 539 | } |
| 540 | |
| 541 | /* Checks that the pattern matches the beginning of the tested string. */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 542 | struct pattern *pat_match_beg(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 543 | { |
| 544 | int icase; |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 545 | struct pattern_list *lst; |
| 546 | struct pattern *pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 547 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 548 | /* convert input to string */ |
| 549 | if (!sample_convert(smp, SMP_T_STR)) |
| 550 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 551 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 552 | list_for_each_entry(lst, &expr->patterns, list) { |
| 553 | pattern = &lst->pat; |
| 554 | |
| 555 | if (pattern->len > smp->data.str.len) |
| 556 | continue; |
| 557 | |
| 558 | icase = pattern->flags & PAT_F_IGNORE_CASE; |
| 559 | if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, pattern->len) != 0) || |
| 560 | (!icase && strncmp(pattern->ptr.str, smp->data.str.str, pattern->len) != 0)) |
| 561 | continue; |
| 562 | |
| 563 | return pattern; |
| 564 | } |
| 565 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | /* Checks that the pattern matches the end of the tested string. */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 569 | struct pattern *pat_match_end(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 570 | { |
| 571 | int icase; |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 572 | struct pattern_list *lst; |
| 573 | struct pattern *pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 574 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 575 | /* convert input to string */ |
| 576 | if (!sample_convert(smp, SMP_T_STR)) |
| 577 | return NULL; |
| 578 | |
| 579 | list_for_each_entry(lst, &expr->patterns, list) { |
| 580 | pattern = &lst->pat; |
| 581 | |
| 582 | if (pattern->len > smp->data.str.len) |
| 583 | continue; |
| 584 | |
| 585 | icase = pattern->flags & PAT_F_IGNORE_CASE; |
| 586 | if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str + smp->data.str.len - pattern->len, pattern->len) != 0) || |
| 587 | (!icase && strncmp(pattern->ptr.str, smp->data.str.str + smp->data.str.len - pattern->len, pattern->len) != 0)) |
| 588 | continue; |
| 589 | |
| 590 | return pattern; |
| 591 | } |
| 592 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | /* Checks that the pattern is included inside the tested string. |
| 596 | * NB: Suboptimal, should be rewritten using a Boyer-Moore method. |
| 597 | */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 598 | struct pattern *pat_match_sub(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 599 | { |
| 600 | int icase; |
| 601 | char *end; |
| 602 | char *c; |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 603 | struct pattern_list *lst; |
| 604 | struct pattern *pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 605 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 606 | /* convert input to string */ |
| 607 | if (!sample_convert(smp, SMP_T_STR)) |
| 608 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 609 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 610 | list_for_each_entry(lst, &expr->patterns, list) { |
| 611 | pattern = &lst->pat; |
| 612 | |
| 613 | if (pattern->len > smp->data.str.len) |
| 614 | continue; |
| 615 | |
| 616 | end = smp->data.str.str + smp->data.str.len - pattern->len; |
| 617 | icase = pattern->flags & PAT_F_IGNORE_CASE; |
| 618 | if (icase) { |
| 619 | for (c = smp->data.str.str; c <= end; c++) { |
| 620 | if (tolower(*c) != tolower(*pattern->ptr.str)) |
| 621 | continue; |
| 622 | if (strncasecmp(pattern->ptr.str, c, pattern->len) == 0) |
| 623 | return pattern; |
| 624 | } |
| 625 | } else { |
| 626 | for (c = smp->data.str.str; c <= end; c++) { |
| 627 | if (*c != *pattern->ptr.str) |
| 628 | continue; |
| 629 | if (strncmp(pattern->ptr.str, c, pattern->len) == 0) |
| 630 | return pattern; |
| 631 | } |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 632 | } |
| 633 | } |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 634 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 635 | } |
| 636 | |
| 637 | /* This one is used by other real functions. It checks that the pattern is |
| 638 | * included inside the tested string, but enclosed between the specified |
| 639 | * delimiters or at the beginning or end of the string. The delimiters are |
| 640 | * provided as an unsigned int made by make_4delim() and match up to 4 different |
| 641 | * delimiters. Delimiters are stripped at the beginning and end of the pattern. |
| 642 | */ |
| 643 | static int match_word(struct sample *smp, struct pattern *pattern, unsigned int delimiters) |
| 644 | { |
| 645 | int may_match, icase; |
| 646 | char *c, *end; |
| 647 | char *ps; |
| 648 | int pl; |
| 649 | |
| 650 | pl = pattern->len; |
| 651 | ps = pattern->ptr.str; |
| 652 | |
| 653 | while (pl > 0 && is_delimiter(*ps, delimiters)) { |
| 654 | pl--; |
| 655 | ps++; |
| 656 | } |
| 657 | |
| 658 | while (pl > 0 && is_delimiter(ps[pl - 1], delimiters)) |
| 659 | pl--; |
| 660 | |
| 661 | if (pl > smp->data.str.len) |
| 662 | return PAT_NOMATCH; |
| 663 | |
| 664 | may_match = 1; |
| 665 | icase = pattern->flags & PAT_F_IGNORE_CASE; |
| 666 | end = smp->data.str.str + smp->data.str.len - pl; |
| 667 | for (c = smp->data.str.str; c <= end; c++) { |
| 668 | if (is_delimiter(*c, delimiters)) { |
| 669 | may_match = 1; |
| 670 | continue; |
| 671 | } |
| 672 | |
| 673 | if (!may_match) |
| 674 | continue; |
| 675 | |
| 676 | if (icase) { |
| 677 | if ((tolower(*c) == tolower(*ps)) && |
| 678 | (strncasecmp(ps, c, pl) == 0) && |
| 679 | (c == end || is_delimiter(c[pl], delimiters))) |
| 680 | return PAT_MATCH; |
| 681 | } else { |
| 682 | if ((*c == *ps) && |
| 683 | (strncmp(ps, c, pl) == 0) && |
| 684 | (c == end || is_delimiter(c[pl], delimiters))) |
| 685 | return PAT_MATCH; |
| 686 | } |
| 687 | may_match = 0; |
| 688 | } |
| 689 | return PAT_NOMATCH; |
| 690 | } |
| 691 | |
| 692 | /* Checks that the pattern is included inside the tested string, but enclosed |
| 693 | * between the delimiters '?' or '/' or at the beginning or end of the string. |
| 694 | * Delimiters at the beginning or end of the pattern are ignored. |
| 695 | */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 696 | struct pattern *pat_match_dir(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 697 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 698 | struct pattern_list *lst; |
| 699 | struct pattern *pattern; |
| 700 | |
| 701 | /* convert input to string */ |
| 702 | if (!sample_convert(smp, SMP_T_STR)) |
| 703 | return NULL; |
| 704 | |
| 705 | list_for_each_entry(lst, &expr->patterns, list) { |
| 706 | pattern = &lst->pat; |
| 707 | if (match_word(smp, pattern, make_4delim('/', '?', '?', '?'))) |
| 708 | return pattern; |
| 709 | } |
| 710 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | /* Checks that the pattern is included inside the tested string, but enclosed |
| 714 | * between the delmiters '/', '?', '.' or ":" or at the beginning or end of |
| 715 | * the string. Delimiters at the beginning or end of the pattern are ignored. |
| 716 | */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 717 | struct pattern *pat_match_dom(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 718 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 719 | struct pattern_list *lst; |
| 720 | struct pattern *pattern; |
| 721 | |
| 722 | /* convert input to string */ |
| 723 | if (!sample_convert(smp, SMP_T_STR)) |
| 724 | return NULL; |
| 725 | |
| 726 | list_for_each_entry(lst, &expr->patterns, list) { |
| 727 | pattern = &lst->pat; |
| 728 | if (match_word(smp, pattern, make_4delim('/', '?', '.', ':'))) |
| 729 | return pattern; |
| 730 | } |
| 731 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 732 | } |
| 733 | |
| 734 | /* Checks that the integer in <test> is included between min and max */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 735 | struct pattern *pat_match_int(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 736 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 737 | struct pattern_list *lst; |
| 738 | struct pattern *pattern; |
| 739 | |
| 740 | /* convert input to integer */ |
| 741 | if (!sample_convert(smp, SMP_T_UINT)) |
| 742 | return NULL; |
| 743 | |
| 744 | list_for_each_entry(lst, &expr->patterns, list) { |
| 745 | pattern = &lst->pat; |
| 746 | if ((!pattern->val.range.min_set || pattern->val.range.min <= smp->data.uint) && |
| 747 | (!pattern->val.range.max_set || smp->data.uint <= pattern->val.range.max)) |
| 748 | return pattern; |
| 749 | } |
| 750 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | /* Checks that the length of the pattern in <test> is included between min and max */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 754 | struct pattern *pat_match_len(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 755 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 756 | struct pattern_list *lst; |
| 757 | struct pattern *pattern; |
| 758 | |
| 759 | /* convert input to string */ |
| 760 | if (!sample_convert(smp, SMP_T_STR)) |
| 761 | return NULL; |
| 762 | |
| 763 | list_for_each_entry(lst, &expr->patterns, list) { |
| 764 | pattern = &lst->pat; |
| 765 | if ((!pattern->val.range.min_set || pattern->val.range.min <= smp->data.str.len) && |
| 766 | (!pattern->val.range.max_set || smp->data.str.len <= pattern->val.range.max)) |
| 767 | return pattern; |
| 768 | } |
| 769 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 770 | } |
| 771 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 772 | struct pattern *pat_match_ip(struct sample *smp, struct pattern_expr *expr, int fill) |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 773 | { |
| 774 | unsigned int v4; /* in network byte order */ |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 775 | struct in6_addr tmp6; |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 776 | struct in_addr *s; |
| 777 | struct ebmb_node *node; |
| 778 | struct pattern_tree *elt; |
| 779 | struct pattern_list *lst; |
| 780 | struct pattern *pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 781 | |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 782 | /* convert input to addr */ |
| 783 | if (!sample_convert(smp, SMP_T_ADDR)) |
| 784 | return NULL; |
| 785 | |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 786 | /* The input sample is IPv4. Try to match in the trees. */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 787 | if (smp->type == SMP_T_IPV4) { |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 788 | /* Lookup an IPv4 address in the expression's pattern tree using |
| 789 | * the longest match method. |
| 790 | */ |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 791 | s = &smp->data.ipv4; |
| 792 | node = ebmb_lookup_longest(&expr->pattern_tree, &s->s_addr); |
| 793 | if (node) { |
| 794 | if (fill) { |
| 795 | elt = ebmb_entry(node, struct pattern_tree, node); |
| 796 | static_pattern.smp = elt->smp; |
| 797 | static_pattern.flags = PAT_F_TREE; |
| 798 | static_pattern.type = SMP_T_IPV4; |
| 799 | memcpy(&static_pattern.val.ipv4.addr.s_addr, elt->node.key, 4); |
| 800 | if (!cidr2dotted(elt->node.node.pfx, &static_pattern.val.ipv4.mask)) |
| 801 | return NULL; |
| 802 | } |
| 803 | return &static_pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 804 | } |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 805 | |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 806 | /* The IPv4 sample dont match the IPv4 tree. Convert the IPv4 |
| 807 | * sample address to IPv6 with the mapping method using the ::ffff: |
| 808 | * prefix, and try to lookup in the IPv6 tree. |
| 809 | */ |
| 810 | memset(&tmp6, 0, 10); |
| 811 | *(uint16_t*)&tmp6.s6_addr[10] = htons(0xffff); |
| 812 | *(uint32_t*)&tmp6.s6_addr[12] = smp->data.ipv4.s_addr; |
| 813 | node = ebmb_lookup_longest(&expr->pattern_tree_2, &tmp6); |
| 814 | if (node) { |
| 815 | if (fill) { |
| 816 | elt = ebmb_entry(node, struct pattern_tree, node); |
| 817 | static_pattern.smp = elt->smp; |
| 818 | static_pattern.flags = PAT_F_TREE; |
| 819 | static_pattern.type = SMP_T_IPV6; |
| 820 | memcpy(&static_pattern.val.ipv6.addr, elt->node.key, 16); |
| 821 | static_pattern.val.ipv6.mask = elt->node.node.pfx; |
| 822 | } |
| 823 | return &static_pattern; |
| 824 | } |
| 825 | } |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 826 | |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 827 | /* The input sample is IPv6. Try to match in the trees. */ |
| 828 | if (smp->type == SMP_T_IPV6) { |
| 829 | /* Lookup an IPv6 address in the expression's pattern tree using |
| 830 | * the longest match method. |
| 831 | */ |
| 832 | node = ebmb_lookup_longest(&expr->pattern_tree_2, &smp->data.ipv6); |
| 833 | if (node) { |
| 834 | if (fill) { |
| 835 | elt = ebmb_entry(node, struct pattern_tree, node); |
| 836 | static_pattern.smp = elt->smp; |
| 837 | static_pattern.flags = PAT_F_TREE; |
| 838 | static_pattern.type = SMP_T_IPV6; |
| 839 | memcpy(&static_pattern.val.ipv6.addr, elt->node.key, 16); |
| 840 | static_pattern.val.ipv6.mask = elt->node.node.pfx; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 841 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 842 | return &static_pattern; |
| 843 | } |
| 844 | |
| 845 | /* Try to convert 6 to 4 when the start of the ipv6 address match the |
| 846 | * following forms : |
| 847 | * - ::ffff:ip:v4 (ipv4 mapped) |
| 848 | * - ::0000:ip:v4 (old ipv4 mapped) |
| 849 | * - 2002:ip:v4:: (6to4) |
| 850 | */ |
| 851 | if ((*(uint32_t*)&smp->data.ipv6.s6_addr[0] == 0 && |
| 852 | *(uint32_t*)&smp->data.ipv6.s6_addr[4] == 0 && |
| 853 | (*(uint32_t*)&smp->data.ipv6.s6_addr[8] == 0 || |
| 854 | *(uint32_t*)&smp->data.ipv6.s6_addr[8] == htonl(0xFFFF))) || |
| 855 | *(uint16_t*)&smp->data.ipv6.s6_addr[0] == htons(0x2002)) { |
| 856 | if (*(uint32_t*)&smp->data.ipv6.s6_addr[0] == 0) |
| 857 | v4 = *(uint32_t*)&smp->data.ipv6.s6_addr[12]; |
| 858 | else |
| 859 | v4 = htonl((ntohs(*(uint16_t*)&smp->data.ipv6.s6_addr[2]) << 16) + |
| 860 | ntohs(*(uint16_t*)&smp->data.ipv6.s6_addr[4])); |
| 861 | |
| 862 | /* Lookup an IPv4 address in the expression's pattern tree using the longest |
| 863 | * match method. |
| 864 | */ |
| 865 | node = ebmb_lookup_longest(&expr->pattern_tree, &v4); |
| 866 | if (node) { |
| 867 | if (fill) { |
| 868 | elt = ebmb_entry(node, struct pattern_tree, node); |
| 869 | static_pattern.smp = elt->smp; |
| 870 | static_pattern.flags = PAT_F_TREE; |
| 871 | static_pattern.type = SMP_T_IPV4; |
| 872 | memcpy(&static_pattern.val.ipv4.addr.s_addr, elt->node.key, 4); |
| 873 | if (!cidr2dotted(elt->node.node.pfx, &static_pattern.val.ipv4.mask)) |
| 874 | return NULL; |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 875 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 876 | return &static_pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 877 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 878 | } |
| 879 | } |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 880 | |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 881 | /* Lookup in the list. the list contain only IPv4 patterns */ |
| 882 | list_for_each_entry(lst, &expr->patterns, list) { |
| 883 | pattern = &lst->pat; |
| 884 | |
| 885 | /* The input sample is IPv4, use it as is. */ |
| 886 | if (smp->type == SMP_T_IPV4) { |
| 887 | v4 = smp->data.ipv4.s_addr; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 888 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 889 | else if (smp->type == SMP_T_IPV6) { |
| 890 | /* v4 match on a V6 sample. We want to check at least for |
| 891 | * the following forms : |
| 892 | * - ::ffff:ip:v4 (ipv4 mapped) |
| 893 | * - ::0000:ip:v4 (old ipv4 mapped) |
| 894 | * - 2002:ip:v4:: (6to4) |
| 895 | */ |
| 896 | if (*(uint32_t*)&smp->data.ipv6.s6_addr[0] == 0 && |
| 897 | *(uint32_t*)&smp->data.ipv6.s6_addr[4] == 0 && |
| 898 | (*(uint32_t*)&smp->data.ipv6.s6_addr[8] == 0 || |
| 899 | *(uint32_t*)&smp->data.ipv6.s6_addr[8] == htonl(0xFFFF))) { |
| 900 | v4 = *(uint32_t*)&smp->data.ipv6.s6_addr[12]; |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 901 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 902 | else if (*(uint16_t*)&smp->data.ipv6.s6_addr[0] == htons(0x2002)) { |
| 903 | v4 = htonl((ntohs(*(uint16_t*)&smp->data.ipv6.s6_addr[2]) << 16) + |
| 904 | ntohs(*(uint16_t*)&smp->data.ipv6.s6_addr[4])); |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 905 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 906 | else |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 907 | continue; |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 908 | } |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 909 | |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 910 | /* Check if the input sample match the current pattern. */ |
| 911 | if (((v4 ^ pattern->val.ipv4.addr.s_addr) & pattern->val.ipv4.mask.s_addr) == 0) |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 912 | return pattern; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 913 | } |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 914 | return NULL; |
Thierry FOURNIER | e7ba236 | 2014-01-21 11:25:41 +0100 | [diff] [blame] | 915 | } |
| 916 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 917 | /* NB: does nothing if <pat> is NULL */ |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 918 | void pattern_free(struct pattern_list *pat) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 919 | { |
| 920 | if (!pat) |
| 921 | return; |
| 922 | |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 923 | if (pat->pat.ptr.ptr) { |
| 924 | if (pat->pat.freeptrbuf) |
| 925 | pat->pat.freeptrbuf(pat->pat.ptr.ptr); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 926 | |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 927 | free(pat->pat.ptr.ptr); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 928 | } |
| 929 | |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 930 | free(pat->pat.smp); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 931 | free(pat); |
| 932 | } |
| 933 | |
| 934 | void free_pattern_list(struct list *head) |
| 935 | { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 936 | struct pattern_list *pat, *tmp; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 937 | list_for_each_entry_safe(pat, tmp, head, list) |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 938 | pattern_free(pat); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 939 | } |
| 940 | |
| 941 | void free_pattern_tree(struct eb_root *root) |
| 942 | { |
| 943 | struct eb_node *node, *next; |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 944 | struct pattern_tree *elt; |
Thierry FOURNIER | 3ce88c7 | 2013-12-09 11:29:46 +0100 | [diff] [blame] | 945 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 946 | node = eb_first(root); |
| 947 | while (node) { |
| 948 | next = eb_next(node); |
| 949 | eb_delete(node); |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 950 | elt = container_of(node, struct pattern_tree, node); |
Thierry FOURNIER | c64de3f | 2013-12-10 15:08:39 +0100 | [diff] [blame] | 951 | free(elt->smp); |
Thierry FOURNIER | 3ce88c7 | 2013-12-09 11:29:46 +0100 | [diff] [blame] | 952 | free(elt); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 953 | node = next; |
| 954 | } |
| 955 | } |
| 956 | |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 957 | void pattern_prune_expr(struct pattern_expr *expr) |
Thierry FOURNIER | d163e1c | 2013-11-28 11:41:23 +0100 | [diff] [blame] | 958 | { |
| 959 | free_pattern_list(&expr->patterns); |
| 960 | free_pattern_tree(&expr->pattern_tree); |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 961 | free_pattern_tree(&expr->pattern_tree_2); |
Thierry FOURNIER | d163e1c | 2013-11-28 11:41:23 +0100 | [diff] [blame] | 962 | LIST_INIT(&expr->patterns); |
| 963 | } |
| 964 | |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 965 | void pattern_init_expr(struct pattern_expr *expr) |
Thierry FOURNIER | d163e1c | 2013-11-28 11:41:23 +0100 | [diff] [blame] | 966 | { |
| 967 | LIST_INIT(&expr->patterns); |
| 968 | expr->pattern_tree = EB_ROOT_UNIQUE; |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 969 | expr->pattern_tree_2 = EB_ROOT_UNIQUE; |
Thierry FOURNIER | d163e1c | 2013-11-28 11:41:23 +0100 | [diff] [blame] | 970 | } |
| 971 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 972 | /* |
| 973 | * |
| 974 | * The following functions are used for the pattern indexation |
| 975 | * |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 976 | */ |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 977 | |
| 978 | int pat_idx_list_val(struct pattern_expr *expr, struct pattern *pat, char **err) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 979 | { |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 980 | struct pattern_list *patl; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 981 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 982 | /* allocate pattern */ |
| 983 | patl = calloc(1, sizeof(*patl)); |
| 984 | if (!patl) { |
| 985 | memprintf(err, "out of memory while indexing pattern"); |
Thierry FOURNIER | 972028f | 2014-01-23 17:53:31 +0100 | [diff] [blame] | 986 | return 0; |
| 987 | } |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 988 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 989 | /* duplicate pattern */ |
| 990 | memcpy(&patl->pat, pat, sizeof(*pat)); |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 991 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 992 | /* chain pattern in the expression */ |
| 993 | LIST_ADDQ(&expr->patterns, &patl->list); |
| 994 | |
| 995 | /* that's ok */ |
| 996 | return 1; |
| 997 | } |
| 998 | |
| 999 | int pat_idx_list_ptr(struct pattern_expr *expr, struct pattern *pat, char **err) |
| 1000 | { |
| 1001 | struct pattern_list *patl; |
| 1002 | |
| 1003 | /* allocate pattern */ |
| 1004 | patl = calloc(1, sizeof(*patl)); |
| 1005 | if (!patl) |
Thierry FOURNIER | 972028f | 2014-01-23 17:53:31 +0100 | [diff] [blame] | 1006 | return 0; |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1007 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1008 | /* duplicate pattern */ |
| 1009 | memcpy(&patl->pat, pat, sizeof(*pat)); |
| 1010 | patl->pat.ptr.ptr = malloc(patl->pat.len); |
| 1011 | if (!patl->pat.ptr.ptr) { |
| 1012 | free(patl); |
| 1013 | memprintf(err, "out of memory while indexing pattern"); |
| 1014 | return 0; |
| 1015 | } |
| 1016 | memcpy(patl->pat.ptr.ptr, pat->ptr.ptr, pat->len); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1017 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1018 | /* chain pattern in the expression */ |
| 1019 | LIST_ADDQ(&expr->patterns, &patl->list); |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1020 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1021 | /* that's ok */ |
| 1022 | return 1; |
| 1023 | } |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1024 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1025 | int pat_idx_list_str(struct pattern_expr *expr, struct pattern *pat, char **err) |
| 1026 | { |
| 1027 | struct pattern_list *patl; |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1028 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1029 | /* allocate pattern */ |
| 1030 | patl = calloc(1, sizeof(*patl)); |
| 1031 | if (!patl) { |
| 1032 | memprintf(err, "out of memory while indexing pattern"); |
| 1033 | return 0; |
| 1034 | } |
| 1035 | |
| 1036 | /* duplicate pattern */ |
| 1037 | memcpy(&patl->pat, pat, sizeof(*pat)); |
| 1038 | patl->pat.ptr.str = malloc(patl->pat.len + 1); |
| 1039 | if (!patl->pat.ptr.str) { |
| 1040 | free(patl); |
| 1041 | memprintf(err, "out of memory while indexing pattern"); |
| 1042 | return 0; |
| 1043 | } |
| 1044 | memcpy(patl->pat.ptr.ptr, pat->ptr.ptr, pat->len); |
| 1045 | patl->pat.ptr.str[patl->pat.len] = '\0'; |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1046 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1047 | /* chain pattern in the expression */ |
| 1048 | LIST_ADDQ(&expr->patterns, &patl->list); |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1049 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1050 | /* that's ok */ |
| 1051 | return 1; |
| 1052 | } |
| 1053 | |
| 1054 | int pat_idx_list_reg(struct pattern_expr *expr, struct pattern *pat, char **err) |
| 1055 | { |
| 1056 | struct pattern_list *patl; |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1057 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1058 | /* allocate pattern */ |
| 1059 | patl = calloc(1, sizeof(*patl)); |
| 1060 | if (!patl) { |
| 1061 | memprintf(err, "out of memory while indexing pattern"); |
| 1062 | return 0; |
Thierry FOURNIER | 972028f | 2014-01-23 17:53:31 +0100 | [diff] [blame] | 1063 | } |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1064 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1065 | /* duplicate pattern */ |
| 1066 | memcpy(&patl->pat, pat, sizeof(*pat)); |
| 1067 | |
| 1068 | /* allocate regex */ |
| 1069 | patl->pat.ptr.reg = calloc(1, sizeof(*patl->pat.ptr.reg)); |
| 1070 | if (!patl->pat.ptr.reg) { |
| 1071 | free(patl); |
| 1072 | memprintf(err, "out of memory while indexing pattern"); |
| 1073 | return 0; |
| 1074 | } |
| 1075 | |
| 1076 | /* compile regex */ |
| 1077 | if (!regex_comp(pat->ptr.reg->regstr, patl->pat.ptr.reg, !(patl->pat.flags & PAT_F_IGNORE_CASE), 0, err)) { |
| 1078 | free(patl); |
| 1079 | free(patl->pat.ptr.reg); |
| 1080 | return 0; |
| 1081 | } |
| 1082 | |
| 1083 | /* free pattern method */ |
| 1084 | patl->pat.freeptrbuf = &pat_free_reg; |
| 1085 | |
| 1086 | /* chain pattern in the expression */ |
| 1087 | LIST_ADDQ(&expr->patterns, &patl->list); |
| 1088 | |
| 1089 | /* that's ok */ |
| 1090 | return 1; |
| 1091 | } |
| 1092 | |
| 1093 | int pat_idx_tree_ip(struct pattern_expr *expr, struct pattern *pat, char **err) |
| 1094 | { |
| 1095 | unsigned int mask; |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 1096 | struct pattern_tree *node; |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1097 | |
| 1098 | /* Only IPv4 can be indexed */ |
| 1099 | if (pat->type == SMP_T_IPV4) { |
Thierry FOURNIER | 972028f | 2014-01-23 17:53:31 +0100 | [diff] [blame] | 1100 | /* in IPv4 case, check if the mask is contiguous so that we can |
| 1101 | * insert the network into the tree. A continuous mask has only |
| 1102 | * ones on the left. This means that this mask + its lower bit |
| 1103 | * added once again is null. |
| 1104 | */ |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1105 | mask = ntohl(pat->val.ipv4.mask.s_addr); |
| 1106 | if (mask + (mask & -mask) == 0) { |
| 1107 | mask = mask ? 33 - flsnz(mask & -mask) : 0; /* equals cidr value */ |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1108 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1109 | /* node memory allocation */ |
| 1110 | node = calloc(1, sizeof(*node) + 4); |
| 1111 | if (!node) { |
| 1112 | memprintf(err, "out of memory while loading pattern"); |
| 1113 | return 0; |
| 1114 | } |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1115 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1116 | /* copy the pointer to sample associated to this node */ |
| 1117 | node->smp = pat->smp; |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1118 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1119 | /* FIXME: insert <addr>/<mask> into the tree here */ |
| 1120 | memcpy(node->node.key, &pat->val.ipv4.addr, 4); /* network byte order */ |
| 1121 | node->node.node.pfx = mask; |
| 1122 | if (ebmb_insert_prefix(&expr->pattern_tree, &node->node, 4) != &node->node) |
| 1123 | free(node); /* was a duplicate */ |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1124 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1125 | /* that's ok */ |
| 1126 | return 1; |
| 1127 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 1128 | else { |
| 1129 | /* If the mask is not contiguous, just add the pattern to the list */ |
| 1130 | return pat_idx_list_val(expr, pat, err); |
| 1131 | } |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1132 | } |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 1133 | else if (pat->type == SMP_T_IPV6) { |
| 1134 | /* IPv6 also can be indexed */ |
| 1135 | node = calloc(1, sizeof(*node) + 16); |
| 1136 | if (!node) { |
| 1137 | memprintf(err, "out of memory while loading pattern"); |
| 1138 | return 0; |
| 1139 | } |
| 1140 | |
| 1141 | /* copy the pointer to sample associated to this node */ |
| 1142 | node->smp = pat->smp; |
| 1143 | |
| 1144 | /* FIXME: insert <addr>/<mask> into the tree here */ |
| 1145 | memcpy(node->node.key, &pat->val.ipv6.addr, 16); /* network byte order */ |
| 1146 | node->node.node.pfx = pat->val.ipv6.mask; |
| 1147 | if (ebmb_insert_prefix(&expr->pattern_tree_2, &node->node, 16) != &node->node) |
| 1148 | free(node); /* was a duplicate */ |
| 1149 | |
| 1150 | /* that's ok */ |
| 1151 | return 1; |
| 1152 | } |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1153 | |
Thierry FOURNIER | 33a7433 | 2013-12-19 23:54:54 +0100 | [diff] [blame] | 1154 | return 0; |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1155 | } |
| 1156 | |
| 1157 | int pat_idx_tree_str(struct pattern_expr *expr, struct pattern *pat, char **err) |
| 1158 | { |
| 1159 | int len; |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 1160 | struct pattern_tree *node; |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1161 | |
| 1162 | /* Only string can be indexed */ |
Thierry FOURNIER | 7654c9f | 2013-12-17 00:20:33 +0100 | [diff] [blame] | 1163 | if (pat->type != SMP_T_STR) { |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1164 | memprintf(err, "internal error: string expected, but the type is '%s'", |
| 1165 | smp_to_type[pat->type]); |
| 1166 | return 0; |
Thierry FOURNIER | 972028f | 2014-01-23 17:53:31 +0100 | [diff] [blame] | 1167 | } |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1168 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1169 | /* If the flag PAT_F_IGNORE_CASE is set, we cannot use trees */ |
| 1170 | if (pat->flags & PAT_F_IGNORE_CASE) |
| 1171 | return pat_idx_list_str(expr, pat, err); |
Thierry FOURNIER | 7148ce6 | 2013-12-06 19:06:43 +0100 | [diff] [blame] | 1172 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1173 | /* Process the key len */ |
| 1174 | len = strlen(pat->ptr.str) + 1; |
| 1175 | |
| 1176 | /* node memory allocation */ |
| 1177 | node = calloc(1, sizeof(*node) + len); |
| 1178 | if (!node) { |
| 1179 | memprintf(err, "out of memory while loading pattern"); |
| 1180 | return 0; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1181 | } |
| 1182 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1183 | /* copy the pointer to sample associated to this node */ |
| 1184 | node->smp = pat->smp; |
| 1185 | |
| 1186 | /* copy the string */ |
| 1187 | memcpy(node->node.key, pat->ptr.str, len); |
| 1188 | |
| 1189 | /* index the new node */ |
| 1190 | if (ebst_insert(&expr->pattern_tree, &node->node) != &node->node) |
| 1191 | free(node); /* was a duplicate */ |
| 1192 | |
| 1193 | /* that's ok */ |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1194 | return 1; |
| 1195 | } |
| 1196 | |
Thierry FOURNIER | b113650 | 2014-01-15 11:38:49 +0100 | [diff] [blame^] | 1197 | void pat_del_list_val(struct pattern_expr *expr, struct pattern *pattern) |
| 1198 | { |
| 1199 | struct pattern_list *pat; |
| 1200 | struct pattern_list *safe; |
| 1201 | |
| 1202 | list_for_each_entry_safe(pat, safe, &expr->patterns, list) { |
| 1203 | /* Check equality. */ |
| 1204 | if (pattern->val.range.min_set != pat->pat.val.range.min_set) |
| 1205 | continue; |
| 1206 | if (pattern->val.range.max_set != pat->pat.val.range.max_set) |
| 1207 | continue; |
| 1208 | if (pattern->val.range.min_set && |
| 1209 | pattern->val.range.min != pat->pat.val.range.min) |
| 1210 | continue; |
| 1211 | if (pattern->val.range.max_set && |
| 1212 | pattern->val.range.max != pat->pat.val.range.max) |
| 1213 | continue; |
| 1214 | |
| 1215 | /* Delete and free entry. */ |
| 1216 | LIST_DEL(&pat->list); |
| 1217 | free(pat->pat.smp); |
| 1218 | free(pat); |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | void pat_del_tree_ip(struct pattern_expr *expr, struct pattern *pattern) |
| 1223 | { |
| 1224 | struct ebmb_node *node, *next_node; |
| 1225 | struct pattern_tree *elt; |
| 1226 | struct pattern_list *pat; |
| 1227 | struct pattern_list *safe; |
| 1228 | unsigned int mask; |
| 1229 | |
| 1230 | /* browse each node of the tree for IPv4 addresses. */ |
| 1231 | if (pattern->type == SMP_T_IPV4) { |
| 1232 | /* Convert mask. If the mask is contiguous, browse each node |
| 1233 | * of the tree for IPv4 addresses. |
| 1234 | */ |
| 1235 | mask = ntohl(pattern->val.ipv4.mask.s_addr); |
| 1236 | if (mask + (mask & -mask) == 0) { |
| 1237 | mask = mask ? 33 - flsnz(mask & -mask) : 0; /* equals cidr value */ |
| 1238 | |
| 1239 | for (node = ebmb_first(&expr->pattern_tree), next_node = node ? ebmb_next(node) : NULL; |
| 1240 | node; |
| 1241 | node = next_node, next_node = node ? ebmb_next(node) : NULL) { |
| 1242 | /* Extract container of the tree node. */ |
| 1243 | elt = container_of(node, struct pattern_tree, node); |
| 1244 | |
| 1245 | /* Check equality. */ |
| 1246 | if (memcmp(&pattern->val.ipv4.addr, elt->node.key, |
| 1247 | sizeof(pattern->val.ipv4.addr)) != 0) |
| 1248 | continue; |
| 1249 | if (elt->node.node.pfx != mask) |
| 1250 | continue; |
| 1251 | |
| 1252 | /* Delete and free entry. */ |
| 1253 | ebmb_delete(node); |
| 1254 | free(elt->smp); |
| 1255 | free(elt); |
| 1256 | } |
| 1257 | } |
| 1258 | else { |
| 1259 | /* Browse each node of the list for IPv4 addresses. */ |
| 1260 | list_for_each_entry_safe(pat, safe, &expr->patterns, list) { |
| 1261 | /* Check equality, addr then mask */ |
| 1262 | if (memcmp(&pattern->val.ipv4.addr, &pat->pat.val.ipv4.addr, |
| 1263 | sizeof(pat->pat.val.ipv4.addr)) != 0) |
| 1264 | continue; |
| 1265 | |
| 1266 | if (memcmp(&pattern->val.ipv4.mask, &pat->pat.val.ipv4.mask, |
| 1267 | sizeof(pat->pat.val.ipv4.addr)) != 0) |
| 1268 | continue; |
| 1269 | |
| 1270 | /* Delete and free entry. */ |
| 1271 | LIST_DEL(&pat->list); |
| 1272 | free(pat->pat.smp); |
| 1273 | free(pat); |
| 1274 | } |
| 1275 | } |
| 1276 | } |
| 1277 | else if (pattern->type == SMP_T_IPV6) { |
| 1278 | /* browse each node of the tree for IPv6 addresses. */ |
| 1279 | for (node = ebmb_first(&expr->pattern_tree_2), next_node = node ? ebmb_next(node) : NULL; |
| 1280 | node; |
| 1281 | node = next_node, next_node = node ? ebmb_next(node) : NULL) { |
| 1282 | /* Extract container of the tree node. */ |
| 1283 | elt = container_of(node, struct pattern_tree, node); |
| 1284 | |
| 1285 | /* Check equality. */ |
| 1286 | if (memcmp(&pattern->val.ipv6.addr, elt->node.key, |
| 1287 | sizeof(pattern->val.ipv6.addr)) != 0) |
| 1288 | continue; |
| 1289 | if (elt->node.node.pfx != pattern->val.ipv6.mask) |
| 1290 | continue; |
| 1291 | |
| 1292 | /* Delete and free entry. */ |
| 1293 | ebmb_delete(node); |
| 1294 | free(elt->smp); |
| 1295 | free(elt); |
| 1296 | } |
| 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | void pat_del_list_ptr(struct pattern_expr *expr, struct pattern *pattern) |
| 1301 | { |
| 1302 | struct pattern_list *pat; |
| 1303 | struct pattern_list *safe; |
| 1304 | |
| 1305 | list_for_each_entry_safe(pat, safe, &expr->patterns, list) { |
| 1306 | /* Check equality. */ |
| 1307 | if (pattern->len != pat->pat.len) |
| 1308 | continue; |
| 1309 | if (memcmp(pattern->ptr.ptr, pat->pat.ptr.ptr, pat->pat.len) != 0) |
| 1310 | continue; |
| 1311 | |
| 1312 | /* Delete and free entry. */ |
| 1313 | LIST_DEL(&pat->list); |
| 1314 | free(pat->pat.ptr.ptr); |
| 1315 | free(pat->pat.smp); |
| 1316 | free(pat); |
| 1317 | } |
| 1318 | } |
| 1319 | |
| 1320 | void pat_del_tree_str(struct pattern_expr *expr, struct pattern *pattern) |
| 1321 | { |
| 1322 | struct ebmb_node *node, *next_node; |
| 1323 | struct pattern_tree *elt; |
| 1324 | |
| 1325 | /* browse each node of the tree. */ |
| 1326 | for (node = ebmb_first(&expr->pattern_tree), next_node = node ? ebmb_next(node) : NULL; |
| 1327 | node; |
| 1328 | node = next_node, next_node = node ? ebmb_next(node) : NULL) { |
| 1329 | /* Extract container of the tree node. */ |
| 1330 | elt = container_of(node, struct pattern_tree, node); |
| 1331 | |
| 1332 | /* Check equality. */ |
| 1333 | if (strcmp(pattern->ptr.str, (char *)elt->node.key) != 0) |
| 1334 | continue; |
| 1335 | |
| 1336 | /* Delete and free entry. */ |
| 1337 | ebmb_delete(node); |
| 1338 | free(elt->smp); |
| 1339 | free(elt); |
| 1340 | } |
| 1341 | } |
| 1342 | |
| 1343 | void pat_del_list_str(struct pattern_expr *expr, struct pattern *pattern) |
| 1344 | { |
| 1345 | struct pattern_list *pat; |
| 1346 | struct pattern_list *safe; |
| 1347 | |
| 1348 | list_for_each_entry_safe(pat, safe, &expr->patterns, list) { |
| 1349 | /* Check equality. */ |
| 1350 | if (pattern->len != pat->pat.len) |
| 1351 | continue; |
| 1352 | if (pat->pat.flags & PAT_F_IGNORE_CASE) { |
| 1353 | if (strncasecmp(pattern->ptr.str, pat->pat.ptr.str, pat->pat.len) != 0) |
| 1354 | continue; |
| 1355 | } |
| 1356 | else { |
| 1357 | if (strncmp(pattern->ptr.str, pat->pat.ptr.str, pat->pat.len) != 0) |
| 1358 | continue; |
| 1359 | } |
| 1360 | |
| 1361 | /* Delete and free entry. */ |
| 1362 | LIST_DEL(&pat->list); |
| 1363 | free(pat->pat.ptr.str); |
| 1364 | free(pat->pat.smp); |
| 1365 | free(pat); |
| 1366 | } |
| 1367 | } |
| 1368 | |
| 1369 | void pat_del_list_reg(struct pattern_expr *expr, struct pattern *pattern) |
| 1370 | { |
| 1371 | struct pattern_list *pat; |
| 1372 | struct pattern_list *safe; |
| 1373 | |
| 1374 | list_for_each_entry_safe(pat, safe, &expr->patterns, list) { |
| 1375 | /* Check equality. */ |
| 1376 | if (pat->pat.flags & PAT_F_IGNORE_CASE) { |
| 1377 | if (strcasecmp(pattern->ptr.reg->regstr, pat->pat.ptr.reg->regstr) != 0) |
| 1378 | continue; |
| 1379 | } |
| 1380 | else { |
| 1381 | if (strcmp(pattern->ptr.reg->regstr, pat->pat.ptr.reg->regstr) != 0) |
| 1382 | continue; |
| 1383 | } |
| 1384 | |
| 1385 | /* Delete and free entry. */ |
| 1386 | LIST_DEL(&pat->list); |
| 1387 | regex_free(pat->pat.ptr.ptr); |
| 1388 | free(pat->pat.smp); |
| 1389 | free(pat); |
| 1390 | } |
| 1391 | } |
| 1392 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1393 | /* return 1 if the process is ok |
| 1394 | * return -1 if the parser fail. The err message is filled. |
| 1395 | * return -2 if out of memory |
| 1396 | */ |
| 1397 | int pattern_register(struct pattern_expr *expr, const char *arg, |
| 1398 | struct sample_storage *smp, |
| 1399 | int patflags, char **err) |
| 1400 | { |
| 1401 | int ret; |
| 1402 | struct pattern pattern; |
| 1403 | |
| 1404 | /* initialise pattern */ |
| 1405 | memset(&pattern, 0, sizeof(pattern)); |
| 1406 | pattern.flags = patflags; |
| 1407 | pattern.smp = smp; |
| 1408 | |
| 1409 | /* parse pattern */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 1410 | ret = expr->parse(arg, &pattern, err); |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1411 | if (!ret) |
| 1412 | return 0; |
| 1413 | |
| 1414 | /* index pattern */ |
| 1415 | if (!expr->index(expr, &pattern, err)) |
| 1416 | return 0; |
| 1417 | |
| 1418 | return 1; |
| 1419 | } |
| 1420 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1421 | /* Reads patterns from a file. If <err_msg> is non-NULL, an error message will |
| 1422 | * be returned there on errors and the caller will have to free it. |
| 1423 | */ |
Thierry FOURNIER | a65b343 | 2013-11-28 18:22:00 +0100 | [diff] [blame] | 1424 | int pattern_read_from_file(struct pattern_expr *expr, |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1425 | const char *filename, int patflags, |
| 1426 | char **err) |
| 1427 | { |
| 1428 | FILE *file; |
| 1429 | char *c; |
| 1430 | char *arg; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1431 | int ret = 0; |
| 1432 | int line = 0; |
| 1433 | int code; |
| 1434 | |
| 1435 | file = fopen(filename, "r"); |
| 1436 | if (!file) { |
| 1437 | memprintf(err, "failed to open pattern file <%s>", filename); |
| 1438 | return 0; |
| 1439 | } |
| 1440 | |
| 1441 | /* now parse all patterns. The file may contain only one pattern per |
| 1442 | * line. If the line contains spaces, they will be part of the pattern. |
| 1443 | * The pattern stops at the first CR, LF or EOF encountered. |
| 1444 | */ |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1445 | while (fgets(trash.str, trash.size, file) != NULL) { |
| 1446 | line++; |
| 1447 | c = trash.str; |
| 1448 | |
| 1449 | /* ignore lines beginning with a dash */ |
| 1450 | if (*c == '#') |
| 1451 | continue; |
| 1452 | |
| 1453 | /* strip leading spaces and tabs */ |
| 1454 | while (*c == ' ' || *c == '\t') |
| 1455 | c++; |
| 1456 | |
| 1457 | |
| 1458 | arg = c; |
| 1459 | while (*c && *c != '\n' && *c != '\r') |
| 1460 | c++; |
| 1461 | *c = 0; |
| 1462 | |
| 1463 | /* empty lines are ignored too */ |
| 1464 | if (c == arg) |
| 1465 | continue; |
| 1466 | |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1467 | code = pattern_register(expr, arg, NULL, patflags, err); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1468 | if (code == -2) { |
| 1469 | memprintf(err, "out of memory when loading patterns from file <%s>", filename); |
| 1470 | goto out_close; |
| 1471 | } |
| 1472 | else if (code < 0) { |
| 1473 | memprintf(err, "%s when loading patterns from file <%s>", *err, filename); |
Thierry FOURNIER | b9b0846 | 2013-12-13 15:12:32 +0100 | [diff] [blame] | 1474 | goto out_close; |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1475 | } |
| 1476 | } |
| 1477 | |
| 1478 | ret = 1; /* success */ |
| 1479 | |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1480 | out_close: |
| 1481 | fclose(file); |
| 1482 | return ret; |
| 1483 | } |
| 1484 | |
Thierry FOURNIER | 1794fdf | 2014-01-17 15:25:13 +0100 | [diff] [blame] | 1485 | /* This function executes a pattern match on a sample. It applies pattern <expr> |
| 1486 | * to sample <smp>. The function returns NULL if the sample dont match. It returns |
| 1487 | * non-null if the sample match. If <fill> is true and the sample match, the |
| 1488 | * function returns the matched pattern. In many cases, this pattern can be a |
| 1489 | * static buffer. |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1490 | */ |
Thierry FOURNIER | 1794fdf | 2014-01-17 15:25:13 +0100 | [diff] [blame] | 1491 | struct pattern *pattern_exec_match(struct pattern_expr *expr, struct sample *smp, int fill) |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1492 | { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 1493 | if (!expr->match) { |
Thierry FOURNIER | 1794fdf | 2014-01-17 15:25:13 +0100 | [diff] [blame] | 1494 | if (fill) { |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 1495 | static_pattern.smp = NULL; |
| 1496 | static_pattern.flags = 0; |
| 1497 | static_pattern.type = SMP_T_UINT; |
| 1498 | static_pattern.val.i = 1; |
Thierry FOURNIER | 1794fdf | 2014-01-17 15:25:13 +0100 | [diff] [blame] | 1499 | } |
Thierry FOURNIER | 1794fdf | 2014-01-17 15:25:13 +0100 | [diff] [blame] | 1500 | return &static_pattern; |
| 1501 | } |
Thierry FOURNIER | 5338eea | 2013-12-16 14:22:13 +0100 | [diff] [blame] | 1502 | return expr->match(smp, expr, fill); |
Thierry FOURNIER | ed66c29 | 2013-11-28 11:05:19 +0100 | [diff] [blame] | 1503 | } |
| 1504 | |
Thierry FOURNIER | b113650 | 2014-01-15 11:38:49 +0100 | [diff] [blame^] | 1505 | /* This function search all the pattern matching the <key> and delete it. |
| 1506 | * If the parsing of the input key fails, the function returns 0 and the |
| 1507 | * <err> is filled, else return 1; |
| 1508 | */ |
| 1509 | int pattern_delete(const char *key, struct pattern_expr *expr, char **err) |
| 1510 | { |
| 1511 | struct pattern pattern; |
| 1512 | |
| 1513 | if (!expr->parse(key, &pattern, err)) |
| 1514 | return 0; |
| 1515 | expr->delete(expr, &pattern); |
| 1516 | return 1; |
| 1517 | } |
| 1518 | |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1519 | /* This function browse the pattern expr <expr> to lookup the key <key>. On |
| 1520 | * error it returns 0. On success, it returns 1 and fills either <pat_elt> |
| 1521 | * or <idx_elt> with the respectively matched pointers, and the other one with |
| 1522 | * NULL. Pointers are not set if they're passed as NULL. |
| 1523 | */ |
| 1524 | int pattern_lookup(const char *key, struct pattern_expr *expr, |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 1525 | struct pattern_list **pat_elt, struct pattern_tree **idx_elt, char **err) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1526 | { |
| 1527 | struct pattern pattern; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1528 | struct pattern_list *pat; |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1529 | struct ebmb_node *node; |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 1530 | struct pattern_tree *elt; |
Willy Tarreau | 668ae53 | 2013-12-15 16:42:26 +0100 | [diff] [blame] | 1531 | unsigned int mask = 0; |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1532 | |
| 1533 | /* no real pattern */ |
| 1534 | if (!expr->match || expr->match == pat_match_nothing) |
| 1535 | return 0; |
| 1536 | |
| 1537 | /* build lookup pattern */ |
Thierry FOURNIER | edc15c3 | 2013-12-13 15:36:59 +0100 | [diff] [blame] | 1538 | if (!expr->parse(key, &pattern, NULL)) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1539 | return 0; |
| 1540 | |
| 1541 | pat = NULL; |
| 1542 | elt = NULL; |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1543 | |
Thierry FOURNIER | c64de3f | 2013-12-10 15:08:39 +0100 | [diff] [blame] | 1544 | /* Try to look up the tree first. IPv6 is not indexed */ |
| 1545 | if (!eb_is_empty(&expr->pattern_tree) && pattern.type != SMP_T_IPV6) { |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1546 | /* Check the pattern type */ |
| 1547 | if (pattern.type != SMP_T_STR && |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1548 | pattern.type != SMP_T_IPV4) { |
| 1549 | memprintf(err, "Unexpected pattern type."); |
| 1550 | return 0; |
| 1551 | } |
| 1552 | |
| 1553 | /* Convert mask. If the mask is not contiguous, ignore the lookup |
| 1554 | * in the tree, and browse the list. |
| 1555 | */ |
| 1556 | if (expr->match == pat_match_ip) { |
| 1557 | mask = ntohl(pattern.val.ipv4.mask.s_addr); |
| 1558 | if (mask + (mask & -mask) != 0) |
| 1559 | goto browse_list; |
| 1560 | mask = mask ? 33 - flsnz(mask & -mask) : 0; /* equals cidr value */ |
| 1561 | } |
| 1562 | |
| 1563 | /* browse each node of the tree, and check string */ |
| 1564 | if (expr->match == pat_match_str) { |
| 1565 | for (node = ebmb_first(&expr->pattern_tree); |
| 1566 | node; |
| 1567 | node = ebmb_next(node)) { |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 1568 | elt = container_of(node, struct pattern_tree, node); |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1569 | if (strcmp(pattern.ptr.str, (char *)elt->node.key) == 0) |
| 1570 | goto found; |
| 1571 | } |
| 1572 | } |
| 1573 | else if (expr->match == pat_match_ip) { |
| 1574 | for (node = ebmb_first(&expr->pattern_tree); |
| 1575 | node; |
| 1576 | node = ebmb_next(node)) { |
Thierry FOURNIER | e1bcac5 | 2013-12-13 16:09:50 +0100 | [diff] [blame] | 1577 | elt = container_of(node, struct pattern_tree, node); |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1578 | if (elt->node.node.pfx == mask && |
| 1579 | memcmp(&pattern.val.ipv4.addr.s_addr, elt->node.key, 4) == 0) |
| 1580 | goto found; |
| 1581 | } |
| 1582 | } |
| 1583 | } |
| 1584 | |
| 1585 | browse_list: |
Thierry FOURNIER | c64de3f | 2013-12-10 15:08:39 +0100 | [diff] [blame] | 1586 | elt = NULL; |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1587 | if (expr->parse == pat_parse_int || |
| 1588 | expr->parse == pat_parse_len) { |
| 1589 | list_for_each_entry(pat, &expr->patterns, list) { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1590 | if (pat->pat.flags & PAT_F_TREE) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1591 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1592 | if (pattern.val.range.min_set != pat->pat.val.range.min_set) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1593 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1594 | if (pattern.val.range.max_set != pat->pat.val.range.max_set) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1595 | continue; |
| 1596 | if (pattern.val.range.min_set && |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1597 | pattern.val.range.min != pat->pat.val.range.min) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1598 | continue; |
| 1599 | if (pattern.val.range.max_set && |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1600 | pattern.val.range.max != pat->pat.val.range.max) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1601 | continue; |
| 1602 | goto found; |
| 1603 | } |
| 1604 | } |
| 1605 | else if (expr->parse == pat_parse_ip) { |
| 1606 | list_for_each_entry(pat, &expr->patterns, list) { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1607 | if (pat->pat.flags & PAT_F_TREE) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1608 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1609 | if (pattern.type != pat->pat.type) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1610 | continue; |
| 1611 | if (pattern.type == SMP_T_IPV4 && |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1612 | memcmp(&pattern.val.ipv4.addr, &pat->pat.val.ipv4.addr, sizeof(pat->pat.val.ipv4.addr)) != 0) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1613 | continue; |
| 1614 | if (pattern.type == SMP_T_IPV4 && |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1615 | memcmp(&pattern.val.ipv4.mask, &pat->pat.val.ipv4.mask, sizeof(pat->pat.val.ipv4.addr)) != 0) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1616 | continue; |
| 1617 | if (pattern.type == SMP_T_IPV6 && |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1618 | memcmp(&pattern.val.ipv6.addr, &pat->pat.val.ipv6.addr, sizeof(pat->pat.val.ipv6.addr)) != 0) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1619 | continue; |
| 1620 | if (pattern.type == SMP_T_IPV6 && |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1621 | pattern.val.ipv6.mask != pat->pat.val.ipv6.mask) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1622 | continue; |
| 1623 | goto found; |
| 1624 | } |
| 1625 | } |
| 1626 | else if (expr->parse == pat_parse_str) { |
| 1627 | list_for_each_entry(pat, &expr->patterns, list) { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1628 | if (pat->pat.flags & PAT_F_TREE) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1629 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1630 | if (pattern.len != pat->pat.len) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1631 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1632 | if (pat->pat.flags & PAT_F_IGNORE_CASE) { |
| 1633 | if (strncasecmp(pattern.ptr.str, pat->pat.ptr.str, pat->pat.len) != 0) |
Thierry FOURNIER | 35249cb | 2014-01-14 13:38:40 +0100 | [diff] [blame] | 1634 | continue; |
| 1635 | } |
| 1636 | else { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1637 | if (strncmp(pattern.ptr.str, pat->pat.ptr.str, pat->pat.len) != 0) |
Thierry FOURNIER | 35249cb | 2014-01-14 13:38:40 +0100 | [diff] [blame] | 1638 | continue; |
| 1639 | } |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1640 | goto found; |
| 1641 | } |
| 1642 | } |
| 1643 | else if (expr->parse == pat_parse_bin) { |
| 1644 | list_for_each_entry(pat, &expr->patterns, list) { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1645 | if (pat->pat.flags & PAT_F_TREE) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1646 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1647 | if (pattern.len != pat->pat.len) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1648 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1649 | if (memcmp(pattern.ptr.ptr, pat->pat.ptr.ptr, pat->pat.len) != 0) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1650 | continue; |
| 1651 | goto found; |
| 1652 | } |
| 1653 | } |
| 1654 | else if (expr->parse == pat_parse_reg) { |
| 1655 | list_for_each_entry(pat, &expr->patterns, list) { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1656 | if (pat->pat.flags & PAT_F_TREE) |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1657 | continue; |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1658 | if (pat->pat.flags & PAT_F_IGNORE_CASE) { |
| 1659 | if (strcasecmp(pattern.ptr.reg->regstr, pat->pat.ptr.reg->regstr) != 0) |
Thierry FOURNIER | 35249cb | 2014-01-14 13:38:40 +0100 | [diff] [blame] | 1660 | continue; |
| 1661 | } |
| 1662 | else { |
Thierry FOURNIER | 3ead5b9 | 2013-12-13 12:12:18 +0100 | [diff] [blame] | 1663 | if (strcmp(pattern.ptr.reg->regstr, pat->pat.ptr.reg->regstr) != 0) |
Thierry FOURNIER | 35249cb | 2014-01-14 13:38:40 +0100 | [diff] [blame] | 1664 | continue; |
| 1665 | } |
Thierry FOURNIER | 01cdcd4 | 2013-12-10 15:08:01 +0100 | [diff] [blame] | 1666 | goto found; |
| 1667 | } |
| 1668 | } |
| 1669 | |
| 1670 | /* if we get there, we didn't find the pattern */ |
| 1671 | return 0; |
| 1672 | found: |
| 1673 | if (idx_elt) |
| 1674 | *idx_elt = elt; |
| 1675 | |
| 1676 | if (pat_elt) |
| 1677 | *pat_elt = pat; |
| 1678 | |
| 1679 | return 1; |
| 1680 | } |