Mercurial > embed
comparison libzip/lib/zip_set_name.c @ 20:3b18afe43c9d
libzip: reimport version 1.1.3
author | David Demelier <markand@malikania.fr> |
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date | Wed, 29 Jun 2016 09:24:55 +0200 |
parents | 2306f4b04790 |
children | 056ee6b5913e |
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19:07f2cdc6e430 | 20:3b18afe43c9d |
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1 /* | |
2 zip_set_name.c -- rename helper function | |
3 Copyright (C) 1999-2015 Dieter Baron and Thomas Klausner | |
4 | |
5 This file is part of libzip, a library to manipulate ZIP archives. | |
6 The authors can be contacted at <libzip@nih.at> | |
7 | |
8 Redistribution and use in source and binary forms, with or without | |
9 modification, are permitted provided that the following conditions | |
10 are met: | |
11 1. Redistributions of source code must retain the above copyright | |
12 notice, this list of conditions and the following disclaimer. | |
13 2. Redistributions in binary form must reproduce the above copyright | |
14 notice, this list of conditions and the following disclaimer in | |
15 the documentation and/or other materials provided with the | |
16 distribution. | |
17 3. The names of the authors may not be used to endorse or promote | |
18 products derived from this software without specific prior | |
19 written permission. | |
20 | |
21 THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS | |
22 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
23 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY | |
25 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |
27 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER | |
29 IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
30 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |
31 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 */ | |
33 | |
34 | |
35 #include <stdlib.h> | |
36 #include <string.h> | |
37 | |
38 #include "zipint.h" | |
39 | |
40 | |
41 int | |
42 _zip_set_name(zip_t *za, zip_uint64_t idx, const char *name, zip_flags_t flags) | |
43 { | |
44 zip_entry_t *e; | |
45 zip_string_t *str; | |
46 bool same_as_orig; | |
47 zip_int64_t i; | |
48 const zip_uint8_t *old_name, *new_name; | |
49 zip_string_t *old_str; | |
50 | |
51 if (idx >= za->nentry) { | |
52 zip_error_set(&za->error, ZIP_ER_INVAL, 0); | |
53 return -1; | |
54 } | |
55 | |
56 if (ZIP_IS_RDONLY(za)) { | |
57 zip_error_set(&za->error, ZIP_ER_RDONLY, 0); | |
58 return -1; | |
59 } | |
60 | |
61 if (name && name[0] != '\0') { | |
62 /* TODO: check for string too long */ | |
63 if ((str=_zip_string_new((const zip_uint8_t *)name, (zip_uint16_t)strlen(name), flags, &za->error)) == NULL) | |
64 return -1; | |
65 if ((flags & ZIP_FL_ENCODING_ALL) == ZIP_FL_ENC_GUESS && _zip_guess_encoding(str, ZIP_ENCODING_UNKNOWN) == ZIP_ENCODING_UTF8_GUESSED) | |
66 str->encoding = ZIP_ENCODING_UTF8_KNOWN; | |
67 } | |
68 else | |
69 str = NULL; | |
70 | |
71 /* TODO: encoding flags needed for CP437? */ | |
72 if ((i=_zip_name_locate(za, name, 0, NULL)) >= 0 && (zip_uint64_t)i != idx) { | |
73 _zip_string_free(str); | |
74 zip_error_set(&za->error, ZIP_ER_EXISTS, 0); | |
75 return -1; | |
76 } | |
77 | |
78 /* no effective name change */ | |
79 if (i>=0 && (zip_uint64_t)i == idx) { | |
80 _zip_string_free(str); | |
81 return 0; | |
82 } | |
83 | |
84 e = za->entry+idx; | |
85 | |
86 if (e->orig) | |
87 same_as_orig = _zip_string_equal(e->orig->filename, str); | |
88 else | |
89 same_as_orig = false; | |
90 | |
91 if (!same_as_orig && e->changes == NULL) { | |
92 if ((e->changes=_zip_dirent_clone(e->orig)) == NULL) { | |
93 zip_error_set(&za->error, ZIP_ER_MEMORY, 0); | |
94 _zip_string_free(str); | |
95 return -1; | |
96 } | |
97 } | |
98 | |
99 if ((new_name = _zip_string_get(same_as_orig ? e->orig->filename : str, NULL, 0, &za->error)) == NULL) { | |
100 _zip_string_free(str); | |
101 return -1; | |
102 } | |
103 | |
104 if (e->changes) { | |
105 old_str = e->changes->filename; | |
106 } | |
107 else if (e->orig) { | |
108 old_str = e->orig->filename; | |
109 } | |
110 else { | |
111 old_str = NULL; | |
112 } | |
113 | |
114 if (old_str) { | |
115 if ((old_name = _zip_string_get(old_str, NULL, 0, &za->error)) == NULL) { | |
116 _zip_string_free(str); | |
117 return -1; | |
118 } | |
119 } | |
120 else { | |
121 old_name = NULL; | |
122 } | |
123 | |
124 if (_zip_hash_add(za->names, new_name, idx, 0, &za->error) == false) { | |
125 _zip_string_free(str); | |
126 return -1; | |
127 } | |
128 if (old_name) { | |
129 _zip_hash_delete(za->names, old_name, NULL); | |
130 } | |
131 | |
132 if (same_as_orig) { | |
133 if (e->changes) { | |
134 if (e->changes->changed & ZIP_DIRENT_FILENAME) { | |
135 _zip_string_free(e->changes->filename); | |
136 e->changes->changed &= ~ZIP_DIRENT_FILENAME; | |
137 if (e->changes->changed == 0) { | |
138 _zip_dirent_free(e->changes); | |
139 e->changes = NULL; | |
140 } | |
141 else { | |
142 /* TODO: what if not cloned? can that happen? */ | |
143 e->changes->filename = e->orig->filename; | |
144 } | |
145 } | |
146 } | |
147 _zip_string_free(str); | |
148 } | |
149 else { | |
150 if (e->changes->changed & ZIP_DIRENT_FILENAME) { | |
151 _zip_string_free(e->changes->filename); | |
152 } | |
153 e->changes->changed |= ZIP_DIRENT_FILENAME; | |
154 e->changes->filename = str; | |
155 } | |
156 | |
157 return 0; | |
158 } |