media/mtransport/third_party/nICEr/src/util/mbslen.c@97036ab72558
media/mtransport/third_party/nICEr/src/util/mbslen.c
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /*
2 Copyright (c) 2007, Adobe Systems, Incorporated
3 All rights reserved.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are
7 met:
9 * Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
12 * Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
16 * Neither the name of Adobe Systems, Network Resonance nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
34 #ifdef LINUX
35 #define _GNU_SOURCE 1
36 #endif
37 #include <string.h>
39 #include <errno.h>
40 #include <csi_platform.h>
42 #include <assert.h>
43 #include <locale.h>
44 #include <stdlib.h>
45 #include <wchar.h>
46 #ifdef DARWIN
47 #define HAVE_XLOCALE
48 #endif
50 #ifdef __FreeBSD__
51 #include <osreldate.h>
52 # if __FreeBSD_version > 900505
53 # define HAVE_XLOCALE
54 # endif
55 #endif
57 #ifdef HAVE_XLOCALE
58 #include <xlocale.h>
59 #endif /* HAVE_XLOCALE */
61 #include "nr_api.h"
62 #include "mbslen.h"
64 /* get number of characters in a mult-byte character string */
65 int
66 mbslen(const char *s, size_t *ncharsp)
67 {
68 #ifdef HAVE_XLOCALE
69 static locale_t loc = 0;
70 static int initialized = 0;
71 #endif /* HAVE_XLOCALE */
72 #ifdef WIN32
73 char *my_locale=0;
74 unsigned int i;
75 #endif /* WIN32 */
76 int _status;
77 size_t nbytes;
78 int nchars;
79 mbstate_t mbs;
81 #ifdef HAVE_XLOCALE
82 if (! initialized) {
83 initialized = 1;
84 loc = newlocale(LC_CTYPE_MASK, "UTF-8", LC_GLOBAL_LOCALE);
85 }
87 if (loc == 0) {
88 /* unable to create the UTF-8 locale */
89 assert(loc != 0); /* should never happen */
90 #endif /* HAVE_XLOCALE */
92 #ifdef WIN32
93 if (!setlocale(LC_CTYPE, 0))
94 ABORT(R_INTERNAL);
96 if (!(my_locale = r_strdup(setlocale(LC_CTYPE, 0))))
97 ABORT(R_NO_MEMORY);
99 for (i=0; i<strlen(my_locale); i++)
100 my_locale[i] = toupper(my_locale[i]);
102 if (!strstr(my_locale, "UTF-8") && !strstr(my_locale, "UTF8"))
103 ABORT(R_NOT_FOUND);
104 #else
105 /* can't count UTF-8 characters with mbrlen if the locale isn't UTF-8 */
106 /* null-checking setlocale is required because Android */
107 char *locale = setlocale(LC_CTYPE, 0);
108 /* some systems use "utf8" instead of "UTF-8" like Fedora 17 */
109 if (!locale || (!strcasestr(locale, "UTF-8") && !strcasestr(locale, "UTF8")))
110 ABORT(R_NOT_FOUND);
111 #endif
113 #ifdef HAVE_XLOCALE
114 }
115 #endif /* HAVE_XLOCALE */
117 memset(&mbs, 0, sizeof(mbs));
118 nchars = 0;
120 #ifdef HAVE_XLOCALE
121 while (*s != '\0' && (nbytes = mbrlen_l(s, strlen(s), &mbs, loc)) != 0)
122 #else
123 while (*s != '\0' && (nbytes = mbrlen(s, strlen(s), &mbs)) != 0)
124 #endif /* HAVE_XLOCALE */
125 {
126 if (nbytes == (size_t)-1) /* should never happen */ {
127 ABORT(R_INTERNAL);
128 }
129 if (nbytes == (size_t)-2) /* encoding error */ {
130 ABORT(R_BAD_DATA);
131 }
133 s += nbytes;
134 ++nchars;
135 }
137 *ncharsp = nchars;
139 _status = 0;
140 abort:
141 #ifdef WIN32
142 RFREE(my_locale);
143 #endif
144 return _status;
145 }
