The Tor Browser: other-licenses/android/ns

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 /*	$NetBSD: ns_ttl.c,v 1.2 2004/05/20 20:35:05 christos Exp $	*/

     3 /*

     4  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")

     5  * Copyright (c) 1996,1999 by Internet Software Consortium.

     6  *

     7  * Permission to use, copy, modify, and distribute this software for any

     8  * purpose with or without fee is hereby granted, provided that the above

     9  * copyright notice and this permission notice appear in all copies.

    10  *

    11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES

    12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

    13  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR

    14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

    15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

    16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT

    17  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

    18  */

    20 /*

    21  * This version of this file is derived from Android 2.3 "Gingerbread",

    22  * which contains uncredited changes by Android/Google developers.  It has

    23  * been modified in 2011 for use in the Android build of Mozilla Firefox by

    24  * Mozilla contributors (including Michael Edwards <m.k.edwards@gmail.com>,

    25  * and Steve Workman <sjhworkman@gmail.com>).

    26  * These changes are offered under the same license as the original NetBSD

    27  * file, whose copyright and license are unchanged above.

    28  */

    30 #define ANDROID_CHANGES 1

    31 #define MOZILLA_NECKO_EXCLUDE_CODE 1

    33 #include <sys/cdefs.h>

    34 #ifndef lint

    35 #ifdef notdef

    36 static const char rcsid[] = "Id: ns_ttl.c,v 1.1.206.1 2004/03/09 08:33:45 marka Exp";

    37 #else

    38 __RCSID("$NetBSD: ns_ttl.c,v 1.2 2004/05/20 20:35:05 christos Exp $");

    39 #endif

    40 #endif

    42 /* Import. */

    44 #include "arpa_nameser.h"

    46 #include <ctype.h>

    47 #include <errno.h>

    48 #include <stdio.h>

    49 #include <string.h>

    51 #ifdef SPRINTF_CHAR

    52 # define SPRINTF(x) strlen(sprintf/**/x)

    53 #else

    54 # define SPRINTF(x) ((size_t)sprintf x)

    55 #endif

    57 /* Forward. */

    59 static int	fmt1(int t, char s, char **buf, size_t *buflen);

    61 /* Macros. */

    63 #define T(x) do { if ((x) < 0) return (-1); } while(0)

    65 /* Public. */

    67 int

    68 ns_format_ttl(u_long src, char *dst, size_t dstlen) {

    69 	char *odst = dst;

    70 	int secs, mins, hours, days, weeks, x;

    71 	char *p;

    73 	secs = src % 60;   src /= 60;

    74 	mins = src % 60;   src /= 60;

    75 	hours = src % 24;  src /= 24;

    76 	days = src % 7;    src /= 7;

    77 	weeks = src;       src = 0;

    79 	x = 0;

    80 	if (weeks) {

    81 		T(fmt1(weeks, 'W', &dst, &dstlen));

    82 		x++;

    83 	}

    84 	if (days) {

    85 		T(fmt1(days, 'D', &dst, &dstlen));

    86 		x++;

    87 	}

    88 	if (hours) {

    89 		T(fmt1(hours, 'H', &dst, &dstlen));

    90 		x++;

    91 	}

    92 	if (mins) {

    93 		T(fmt1(mins, 'M', &dst, &dstlen));

    94 		x++;

    95 	}

    96 	if (secs || !(weeks || days || hours || mins)) {

    97 		T(fmt1(secs, 'S', &dst, &dstlen));

    98 		x++;

    99 	}

   101 	if (x > 1) {

   102 		int ch;

   104 		for (p = odst; (ch = *p) != '\0'; p++)

   105 			if (isascii(ch) && isupper(ch))

   106 				*p = tolower(ch);

   107 	}

   109 	return (dst - odst);

   110 }

   112 #ifndef MOZILLA_NECKO_EXCLUDE_CODE

   113 #ifndef _LIBC

   114 int

   115 ns_parse_ttl(const char *src, u_long *dst) {

   116 	u_long ttl, tmp;

   117 	int ch, digits, dirty;

   119 	ttl = 0;

   120 	tmp = 0;

   121 	digits = 0;

   122 	dirty = 0;

   123 	while ((ch = *src++) != '\0') {

   124 		if (!isascii(ch) || !isprint(ch))

   125 			goto einval;

   126 		if (isdigit(ch)) {

   127 			tmp *= 10;

   128 			tmp += (ch - '0');

   129 			digits++;

   130 			continue;

   131 		}

   132 		if (digits == 0)

   133 			goto einval;

   134 		if (islower(ch))

   135 			ch = toupper(ch);

   136 		switch (ch) {

   137 		case 'W':  tmp *= 7;	/*FALLTHROUGH*/

   138 		case 'D':  tmp *= 24;	/*FALLTHROUGH*/

   139 		case 'H':  tmp *= 60;	/*FALLTHROUGH*/

   140 		case 'M':  tmp *= 60;	/*FALLTHROUGH*/

   141 		case 'S':  break;

   142 		default:   goto einval;

   143 		}

   144 		ttl += tmp;

   145 		tmp = 0;

   146 		digits = 0;

   147 		dirty = 1;

   148 	}

   149 	if (digits > 0) {

   150 		if (dirty)

   151 			goto einval;

   152 		else

   153 			ttl += tmp;

   154 	}

   155 	*dst = ttl;

   156 	return (0);

   158  einval:

   159 	errno = EINVAL;

   160 	return (-1);

   161 }

   162 #endif

   163 #endif

   165 /* Private. */

   167 static int

   168 fmt1(int t, char s, char **buf, size_t *buflen) {

   169 	char tmp[50];

   170 	size_t len;

   172 	len = SPRINTF((tmp, "%d%c", t, s));

   173 	if (len + 1 > *buflen)

   174 		return (-1);

   175 	strcpy(*buf, tmp);

   176 	*buf += len;

   177 	*buflen -= len;

   178 	return (0);

   179 }

The Tor Browser / file revision

other-licenses/android/ns_ttl.c@97036ab72558

other-licenses/android/ns_ttl.c