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225b7b10 | 1 | /* |
262a0e14 | 2 | * $Id$ |
225b7b10 | 3 | * |
4 | * DEBUG: section 28 Access Control | |
5 | * AUTHOR: Duane Wessels | |
6 | * | |
7 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
8 | * ---------------------------------------------------------- | |
9 | * | |
10 | * Squid is the result of efforts by numerous individuals from | |
11 | * the Internet community; see the CONTRIBUTORS file for full | |
12 | * details. Many organizations have provided support for Squid's | |
13 | * development; see the SPONSORS file for full details. Squid is | |
14 | * Copyrighted (C) 2001 by the Regents of the University of | |
15 | * California; see the COPYRIGHT file for full details. Squid | |
16 | * incorporates software developed and/or copyrighted by other | |
17 | * sources; see the CREDITS file for full details. | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
26ac0430 | 23 | * |
225b7b10 | 24 | * This program is distributed in the hope that it will be useful, |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
26ac0430 | 28 | * |
225b7b10 | 29 | * You should have received a copy of the GNU General Public License |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
32 | * | |
33 | * | |
34 | * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org> | |
35 | */ | |
36 | ||
37 | #include "squid.h" | |
3ad63615 AR |
38 | #include "acl/RegexData.h" |
39 | #include "acl/Checklist.h" | |
40 | #include "acl/Acl.h" | |
d295d770 | 41 | #include "wordlist.h" |
42 | #include "ConfigParser.h" | |
225b7b10 | 43 | |
48071869 | 44 | static void aclDestroyRegexList(relist * data); |
45 | void | |
46 | aclDestroyRegexList(relist * data) | |
47 | { | |
48 | relist *next = NULL; | |
49 | ||
50 | for (; data; data = next) { | |
51 | next = data->next; | |
52 | regfree(&data->regex); | |
53 | safe_free(data->pattern); | |
54 | memFree(data, MEM_RELIST); | |
55 | } | |
56 | } | |
57 | ||
225b7b10 | 58 | ACLRegexData::~ACLRegexData() |
59 | { | |
60 | aclDestroyRegexList(data); | |
62e76326 | 61 | } |
225b7b10 | 62 | |
63 | bool | |
48071869 | 64 | ACLRegexData::match(char const *word) |
225b7b10 | 65 | { |
48071869 | 66 | if (word == NULL) |
67 | return 0; | |
68 | ||
bf8fe701 | 69 | debugs(28, 3, "aclRegexData::match: checking '" << word << "'"); |
48071869 | 70 | |
71 | relist *first, *prev; | |
72 | ||
73 | first = data; | |
74 | ||
75 | prev = NULL; | |
76 | ||
77 | relist *current = first; | |
78 | ||
79 | while (current) { | |
bf8fe701 | 80 | debugs(28, 3, "aclRegexData::match: looking for '" << current->pattern << "'"); |
48071869 | 81 | |
82 | if (regexec(¤t->regex, word, 0, 0, 0) == 0) { | |
83 | if (prev != NULL) { | |
84 | /* shift the element just found to the second position | |
85 | * in the list */ | |
86 | prev->next = current->next; | |
87 | current->next = first->next; | |
88 | first->next = current; | |
89 | } | |
90 | ||
bf8fe701 | 91 | debugs(28, 2, "aclRegexData::match: match '" << current->pattern << "' found in '" << word << "'"); |
48071869 | 92 | return 1; |
93 | } | |
94 | ||
95 | prev = current; | |
96 | current = current->next; | |
97 | } | |
98 | ||
99 | return 0; | |
225b7b10 | 100 | } |
101 | ||
102 | wordlist * | |
103 | ACLRegexData::dump() | |
104 | { | |
48071869 | 105 | wordlist *W = NULL; |
106 | relist *temp = data; | |
ae315d9c | 107 | int flags = REG_EXTENDED | REG_NOSUB; |
48071869 | 108 | |
109 | while (temp != NULL) { | |
ae315d9c | 110 | if (temp->flags != flags) { |
37a8ae40 | 111 | if ((temp->flags®_ICASE) != 0) { |
ae315d9c AJ |
112 | wordlistAdd(&W, "-i"); |
113 | } else { | |
114 | wordlistAdd(&W, "+i"); | |
115 | } | |
116 | flags = temp->flags; | |
117 | } | |
118 | ||
48071869 | 119 | wordlistAdd(&W, temp->pattern); |
120 | temp = temp->next; | |
121 | } | |
122 | ||
123 | return W; | |
124 | } | |
125 | ||
126 | static void aclParseRegexList(relist **curlist); | |
127 | void | |
128 | aclParseRegexList(relist **curlist) | |
129 | { | |
130 | relist **Tail; | |
131 | relist *q = NULL; | |
132 | char *t = NULL; | |
133 | regex_t comp; | |
134 | int errcode; | |
135 | int flags = REG_EXTENDED | REG_NOSUB; | |
136 | ||
3d0ac046 | 137 | for (Tail = (relist **)curlist; *Tail; Tail = &((*Tail)->next)); |
d295d770 | 138 | while ((t = ConfigParser::strtokFile())) { |
48071869 | 139 | if (strcmp(t, "-i") == 0) { |
140 | flags |= REG_ICASE; | |
141 | continue; | |
142 | } | |
143 | ||
144 | if (strcmp(t, "+i") == 0) { | |
145 | flags &= ~REG_ICASE; | |
146 | continue; | |
147 | } | |
148 | ||
149 | if ((errcode = regcomp(&comp, t, flags)) != 0) { | |
150 | char errbuf[256]; | |
151 | regerror(errcode, &comp, errbuf, sizeof errbuf); | |
bf8fe701 | 152 | debugs(28, 0, "" << cfg_filename << " line " << config_lineno << ": " << config_input_line); |
153 | debugs(28, 0, "aclParseRegexList: Invalid regular expression '" << t << "': " << errbuf); | |
48071869 | 154 | continue; |
155 | } | |
156 | ||
157 | q = (relist *)memAllocate(MEM_RELIST); | |
ae315d9c | 158 | q->flags = flags; |
48071869 | 159 | q->pattern = xstrdup(t); |
160 | q->regex = comp; | |
161 | *(Tail) = q; | |
162 | Tail = &q->next; | |
163 | } | |
225b7b10 | 164 | } |
165 | ||
166 | void | |
167 | ACLRegexData::parse() | |
168 | { | |
169 | aclParseRegexList(&data); | |
170 | } | |
171 | ||
65092baf | 172 | bool |
173 | ACLRegexData::empty() const | |
174 | { | |
175 | return data == NULL; | |
176 | } | |
225b7b10 | 177 | |
5dee515e | 178 | ACLData<char const *> * |
225b7b10 | 179 | ACLRegexData::clone() const |
180 | { | |
181 | /* Regex's don't clone yet. */ | |
182 | assert (!data); | |
183 | return new ACLRegexData; | |
184 | } |