media/mtransport/third_party/nICEr/src/util/mbslen.c@97036ab72558 (annotated)
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.
| michael@0 | 1 | /* |
| michael@0 | 2 | Copyright (c) 2007, Adobe Systems, Incorporated |
| michael@0 | 3 | All rights reserved. |
| michael@0 | 4 | |
| michael@0 | 5 | Redistribution and use in source and binary forms, with or without |
| michael@0 | 6 | modification, are permitted provided that the following conditions are |
| michael@0 | 7 | met: |
| michael@0 | 8 | |
| michael@0 | 9 | * Redistributions of source code must retain the above copyright |
| michael@0 | 10 | notice, this list of conditions and the following disclaimer. |
| michael@0 | 11 | |
| michael@0 | 12 | * Redistributions in binary form must reproduce the above copyright |
| michael@0 | 13 | notice, this list of conditions and the following disclaimer in the |
| michael@0 | 14 | documentation and/or other materials provided with the distribution. |
| michael@0 | 15 | |
| michael@0 | 16 | * Neither the name of Adobe Systems, Network Resonance nor the names of its |
| michael@0 | 17 | contributors may be used to endorse or promote products derived from |
| michael@0 | 18 | this software without specific prior written permission. |
| michael@0 | 19 | |
| michael@0 | 20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| michael@0 | 21 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| michael@0 | 22 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| michael@0 | 23 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| michael@0 | 24 | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| michael@0 | 25 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| michael@0 | 26 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| michael@0 | 27 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| michael@0 | 28 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| michael@0 | 29 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| michael@0 | 30 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 31 | */ |
| michael@0 | 32 | |
| michael@0 | 33 | |
| michael@0 | 34 | #ifdef LINUX |
| michael@0 | 35 | #define _GNU_SOURCE 1 |
| michael@0 | 36 | #endif |
| michael@0 | 37 | #include <string.h> |
| michael@0 | 38 | |
| michael@0 | 39 | #include <errno.h> |
| michael@0 | 40 | #include <csi_platform.h> |
| michael@0 | 41 | |
| michael@0 | 42 | #include <assert.h> |
| michael@0 | 43 | #include <locale.h> |
| michael@0 | 44 | #include <stdlib.h> |
| michael@0 | 45 | #include <wchar.h> |
| michael@0 | 46 | #ifdef DARWIN |
| michael@0 | 47 | #define HAVE_XLOCALE |
| michael@0 | 48 | #endif |
| michael@0 | 49 | |
| michael@0 | 50 | #ifdef __FreeBSD__ |
| michael@0 | 51 | #include <osreldate.h> |
| michael@0 | 52 | # if __FreeBSD_version > 900505 |
| michael@0 | 53 | # define HAVE_XLOCALE |
| michael@0 | 54 | # endif |
| michael@0 | 55 | #endif |
| michael@0 | 56 | |
| michael@0 | 57 | #ifdef HAVE_XLOCALE |
| michael@0 | 58 | #include <xlocale.h> |
| michael@0 | 59 | #endif /* HAVE_XLOCALE */ |
| michael@0 | 60 | |
| michael@0 | 61 | #include "nr_api.h" |
| michael@0 | 62 | #include "mbslen.h" |
| michael@0 | 63 | |
| michael@0 | 64 | /* get number of characters in a mult-byte character string */ |
| michael@0 | 65 | int |
| michael@0 | 66 | mbslen(const char *s, size_t *ncharsp) |
| michael@0 | 67 | { |
| michael@0 | 68 | #ifdef HAVE_XLOCALE |
| michael@0 | 69 | static locale_t loc = 0; |
| michael@0 | 70 | static int initialized = 0; |
| michael@0 | 71 | #endif /* HAVE_XLOCALE */ |
| michael@0 | 72 | #ifdef WIN32 |
| michael@0 | 73 | char *my_locale=0; |
| michael@0 | 74 | unsigned int i; |
| michael@0 | 75 | #endif /* WIN32 */ |
| michael@0 | 76 | int _status; |
| michael@0 | 77 | size_t nbytes; |
| michael@0 | 78 | int nchars; |
| michael@0 | 79 | mbstate_t mbs; |
| michael@0 | 80 | |
| michael@0 | 81 | #ifdef HAVE_XLOCALE |
| michael@0 | 82 | if (! initialized) { |
| michael@0 | 83 | initialized = 1; |
| michael@0 | 84 | loc = newlocale(LC_CTYPE_MASK, "UTF-8", LC_GLOBAL_LOCALE); |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | if (loc == 0) { |
| michael@0 | 88 | /* unable to create the UTF-8 locale */ |
| michael@0 | 89 | assert(loc != 0); /* should never happen */ |
| michael@0 | 90 | #endif /* HAVE_XLOCALE */ |
| michael@0 | 91 | |
| michael@0 | 92 | #ifdef WIN32 |
| michael@0 | 93 | if (!setlocale(LC_CTYPE, 0)) |
| michael@0 | 94 | ABORT(R_INTERNAL); |
| michael@0 | 95 | |
| michael@0 | 96 | if (!(my_locale = r_strdup(setlocale(LC_CTYPE, 0)))) |
| michael@0 | 97 | ABORT(R_NO_MEMORY); |
| michael@0 | 98 | |
| michael@0 | 99 | for (i=0; i<strlen(my_locale); i++) |
| michael@0 | 100 | my_locale[i] = toupper(my_locale[i]); |
| michael@0 | 101 | |
| michael@0 | 102 | if (!strstr(my_locale, "UTF-8") && !strstr(my_locale, "UTF8")) |
| michael@0 | 103 | ABORT(R_NOT_FOUND); |
| michael@0 | 104 | #else |
| michael@0 | 105 | /* can't count UTF-8 characters with mbrlen if the locale isn't UTF-8 */ |
| michael@0 | 106 | /* null-checking setlocale is required because Android */ |
| michael@0 | 107 | char *locale = setlocale(LC_CTYPE, 0); |
| michael@0 | 108 | /* some systems use "utf8" instead of "UTF-8" like Fedora 17 */ |
| michael@0 | 109 | if (!locale || (!strcasestr(locale, "UTF-8") && !strcasestr(locale, "UTF8"))) |
| michael@0 | 110 | ABORT(R_NOT_FOUND); |
| michael@0 | 111 | #endif |
| michael@0 | 112 | |
| michael@0 | 113 | #ifdef HAVE_XLOCALE |
| michael@0 | 114 | } |
| michael@0 | 115 | #endif /* HAVE_XLOCALE */ |
| michael@0 | 116 | |
| michael@0 | 117 | memset(&mbs, 0, sizeof(mbs)); |
| michael@0 | 118 | nchars = 0; |
| michael@0 | 119 | |
| michael@0 | 120 | #ifdef HAVE_XLOCALE |
| michael@0 | 121 | while (*s != '\0' && (nbytes = mbrlen_l(s, strlen(s), &mbs, loc)) != 0) |
| michael@0 | 122 | #else |
| michael@0 | 123 | while (*s != '\0' && (nbytes = mbrlen(s, strlen(s), &mbs)) != 0) |
| michael@0 | 124 | #endif /* HAVE_XLOCALE */ |
| michael@0 | 125 | { |
| michael@0 | 126 | if (nbytes == (size_t)-1) /* should never happen */ { |
| michael@0 | 127 | ABORT(R_INTERNAL); |
| michael@0 | 128 | } |
| michael@0 | 129 | if (nbytes == (size_t)-2) /* encoding error */ { |
| michael@0 | 130 | ABORT(R_BAD_DATA); |
| michael@0 | 131 | } |
| michael@0 | 132 | |
| michael@0 | 133 | s += nbytes; |
| michael@0 | 134 | ++nchars; |
| michael@0 | 135 | } |
| michael@0 | 136 | |
| michael@0 | 137 | *ncharsp = nchars; |
| michael@0 | 138 | |
| michael@0 | 139 | _status = 0; |
| michael@0 | 140 | abort: |
| michael@0 | 141 | #ifdef WIN32 |
| michael@0 | 142 | RFREE(my_locale); |
| michael@0 | 143 | #endif |
| michael@0 | 144 | return _status; |
| michael@0 | 145 | } |
| michael@0 | 146 |
