1 /*-
2 * Copyright (c) 2011 Tim Kientzle
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "archive_platform.h"
27
28 #ifdef HAVE_ERRNO_H
29 #include <errno.h>
30 #endif
31
32 #include "archive_options_private.h"
33
34 static const char *
35 parse_option(const char **str,
36 const char **mod, const char **opt, const char **val);
37
38 int
_archive_set_option(struct archive * a,const char * m,const char * o,const char * v,int magic,const char * fn,option_handler use_option)39 _archive_set_option(struct archive *a,
40 const char *m, const char *o, const char *v,
41 int magic, const char *fn, option_handler use_option)
42 {
43 const char *mp, *op, *vp;
44 int r;
45
46 archive_check_magic(a, magic, ARCHIVE_STATE_NEW, fn);
47
48 mp = (m != NULL && m[0] != '\0') ? m : NULL;
49 op = (o != NULL && o[0] != '\0') ? o : NULL;
50 vp = (v != NULL && v[0] != '\0') ? v : NULL;
51
52 if (op == NULL && vp == NULL)
53 return (ARCHIVE_OK);
54 if (op == NULL) {
55 archive_set_error(a, ARCHIVE_ERRNO_MISC, "Empty option");
56 return (ARCHIVE_FAILED);
57 }
58
59 r = use_option(a, mp, op, vp);
60 if (r == ARCHIVE_WARN - 1) {
61 archive_set_error(a, ARCHIVE_ERRNO_MISC,
62 "Unknown module name: `%s'", mp);
63 return (ARCHIVE_FAILED);
64 }
65 if (r == ARCHIVE_WARN) {
66 archive_set_error(a, ARCHIVE_ERRNO_MISC,
67 "Undefined option: `%s%s%s%s%s%s'",
68 vp?"":"!", mp?mp:"", mp?":":"", op, vp?"=":"", vp?vp:"");
69 return (ARCHIVE_FAILED);
70 }
71 return (r);
72 }
73
74 int
_archive_set_either_option(struct archive * a,const char * m,const char * o,const char * v,option_handler use_format_option,option_handler use_filter_option)75 _archive_set_either_option(struct archive *a, const char *m, const char *o, const char *v,
76 option_handler use_format_option, option_handler use_filter_option)
77 {
78 int r1, r2;
79
80 if (o == NULL && v == NULL)
81 return (ARCHIVE_OK);
82 if (o == NULL)
83 return (ARCHIVE_FAILED);
84
85 r1 = use_format_option(a, m, o, v);
86 if (r1 == ARCHIVE_FATAL)
87 return (ARCHIVE_FATAL);
88
89 r2 = use_filter_option(a, m, o, v);
90 if (r2 == ARCHIVE_FATAL)
91 return (ARCHIVE_FATAL);
92
93 if (r2 == ARCHIVE_WARN - 1)
94 return r1;
95 return r1 > r2 ? r1 : r2;
96 }
97
98 int
_archive_set_options(struct archive * a,const char * options,int magic,const char * fn,option_handler use_option)99 _archive_set_options(struct archive *a, const char *options,
100 int magic, const char *fn, option_handler use_option)
101 {
102 int allok = 1, anyok = 0, ignore_mod_err = 0, r;
103 char *data;
104 const char *s, *mod, *opt, *val;
105
106 archive_check_magic(a, magic, ARCHIVE_STATE_NEW, fn);
107
108 if (options == NULL || options[0] == '\0')
109 return ARCHIVE_OK;
110
111 if ((data = strdup(options)) == NULL) {
112 archive_set_error(a,
113 ENOMEM, "Out of memory adding file to list");
114 return (ARCHIVE_FATAL);
115 }
116 s = (const char *)data;
117
118 do {
119 mod = opt = val = NULL;
120
121 parse_option(&s, &mod, &opt, &val);
122 if (mod == NULL && opt != NULL &&
123 strcmp("__ignore_wrong_module_name__", opt) == 0) {
124 /* Ignore module name error */
125 if (val != NULL) {
126 ignore_mod_err = 1;
127 anyok = 1;
128 }
129 continue;
130 }
131
132 r = use_option(a, mod, opt, val);
133 if (r == ARCHIVE_FATAL) {
134 free(data);
135 return (ARCHIVE_FATAL);
136 }
137 if (r == ARCHIVE_FAILED && mod != NULL) {
138 free(data);
139 return (ARCHIVE_FAILED);
140 }
141 if (r == ARCHIVE_WARN - 1) {
142 if (ignore_mod_err)
143 continue;
144 /* The module name is wrong. */
145 archive_set_error(a, ARCHIVE_ERRNO_MISC,
146 "Unknown module name: `%s'", mod);
147 free(data);
148 return (ARCHIVE_FAILED);
149 }
150 if (r == ARCHIVE_WARN) {
151 /* The option name is wrong. No-one used this. */
152 archive_set_error(a, ARCHIVE_ERRNO_MISC,
153 "Undefined option: `%s%s%s'",
154 mod?mod:"", mod?":":"", opt);
155 free(data);
156 return (ARCHIVE_FAILED);
157 }
158 if (r == ARCHIVE_OK)
159 anyok = 1;
160 else
161 allok = 0;
162 } while (s != NULL);
163
164 free(data);
165 return allok ? ARCHIVE_OK : anyok ? ARCHIVE_WARN : ARCHIVE_FAILED;
166 }
167
168 static const char *
parse_option(const char ** s,const char ** m,const char ** o,const char ** v)169 parse_option(const char **s, const char **m, const char **o, const char **v)
170 {
171 const char *end, *mod, *opt, *val;
172 char *p;
173
174 end = NULL;
175 mod = NULL;
176 opt = *s;
177 val = "1";
178
179 p = strchr(opt, ',');
180
181 if (p != NULL) {
182 *p = '\0';
183 end = ((const char *)p) + 1;
184 }
185
186 if (0 == strlen(opt)) {
187 *s = end;
188 *m = NULL;
189 *o = NULL;
190 *v = NULL;
191 return end;
192 }
193
194 p = strchr(opt, ':');
195 if (p != NULL) {
196 *p = '\0';
197 mod = opt;
198 opt = ++p;
199 }
200
201 p = strchr(opt, '=');
202 if (p != NULL) {
203 *p = '\0';
204 val = ++p;
205 } else if (opt[0] == '!') {
206 ++opt;
207 val = NULL;
208 }
209
210 *s = end;
211 *m = mod;
212 *o = opt;
213 *v = val;
214
215 return end;
216 }
217
218