toolkit/crashreporter/google-breakpad/src/common/tests/file_utils.cc

Sat, 03 Jan 2015 20:18:00 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Sat, 03 Jan 2015 20:18:00 +0100
branch
TOR_BUG_3246
changeset 7
129ffea94266
permissions
-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0 1 // Copyright (c) 2011, Google Inc.
michael@0 2 // All rights reserved.
michael@0 3 //
michael@0 4 // Redistribution and use in source and binary forms, with or without
michael@0 5 // modification, are permitted provided that the following conditions are
michael@0 6 // met:
michael@0 7 //
michael@0 8 // * Redistributions of source code must retain the above copyright
michael@0 9 // notice, this list of conditions and the following disclaimer.
michael@0 10 // * Redistributions in binary form must reproduce the above
michael@0 11 // copyright notice, this list of conditions and the following disclaimer
michael@0 12 // in the documentation and/or other materials provided with the
michael@0 13 // distribution.
michael@0 14 // * Neither the name of Google Inc. nor the names of its
michael@0 15 // contributors may be used to endorse or promote products derived from
michael@0 16 // this software without specific prior written permission.
michael@0 17 //
michael@0 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
michael@0 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
michael@0 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
michael@0 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0 29
michael@0 30 // file_utils.cc: Implement utility functions for file manipulation.
michael@0 31 // See file_utils.h for details.
michael@0 32
michael@0 33 #include <fcntl.h>
michael@0 34 #include <stdio.h>
michael@0 35 #include <string.h>
michael@0 36 #include <sys/stat.h>
michael@0 37 #include <unistd.h>
michael@0 38
michael@0 39 #include "common/linux/eintr_wrapper.h"
michael@0 40 #include "common/tests/file_utils.h"
michael@0 41
michael@0 42 namespace google_breakpad {
michael@0 43
michael@0 44 bool CopyFile(const char* from_path, const char* to_path) {
michael@0 45 int infile = HANDLE_EINTR(open(from_path, O_RDONLY));
michael@0 46 if (infile < 0) {
michael@0 47 perror("open");
michael@0 48 return false;
michael@0 49 }
michael@0 50
michael@0 51 int outfile = HANDLE_EINTR(creat(to_path, 0666));
michael@0 52 if (outfile < 0) {
michael@0 53 perror("creat");
michael@0 54 if (HANDLE_EINTR(close(infile)) < 0) {
michael@0 55 perror("close");
michael@0 56 }
michael@0 57 return false;
michael@0 58 }
michael@0 59
michael@0 60 char buffer[1024];
michael@0 61 bool result = true;
michael@0 62
michael@0 63 while (result) {
michael@0 64 ssize_t bytes_read = HANDLE_EINTR(read(infile, buffer, sizeof(buffer)));
michael@0 65 if (bytes_read < 0) {
michael@0 66 perror("read");
michael@0 67 result = false;
michael@0 68 break;
michael@0 69 }
michael@0 70 if (bytes_read == 0)
michael@0 71 break;
michael@0 72 ssize_t bytes_written_per_read = 0;
michael@0 73 do {
michael@0 74 ssize_t bytes_written_partial = HANDLE_EINTR(write(
michael@0 75 outfile,
michael@0 76 &buffer[bytes_written_per_read],
michael@0 77 bytes_read - bytes_written_per_read));
michael@0 78 if (bytes_written_partial < 0) {
michael@0 79 perror("write");
michael@0 80 result = false;
michael@0 81 break;
michael@0 82 }
michael@0 83 bytes_written_per_read += bytes_written_partial;
michael@0 84 } while (bytes_written_per_read < bytes_read);
michael@0 85 }
michael@0 86
michael@0 87 if (HANDLE_EINTR(close(infile)) == -1) {
michael@0 88 perror("close");
michael@0 89 result = false;
michael@0 90 }
michael@0 91 if (HANDLE_EINTR(close(outfile)) == -1) {
michael@0 92 perror("close");
michael@0 93 result = false;
michael@0 94 }
michael@0 95
michael@0 96 return result;
michael@0 97 }
michael@0 98
michael@0 99 bool ReadFile(const char* path, void* buffer, ssize_t* buffer_size) {
michael@0 100 int fd = HANDLE_EINTR(open(path, O_RDONLY));
michael@0 101 if (fd == -1) {
michael@0 102 perror("open");
michael@0 103 return false;
michael@0 104 }
michael@0 105
michael@0 106 bool ok = true;
michael@0 107 if (buffer && buffer_size && *buffer_size > 0) {
michael@0 108 memset(buffer, 0, sizeof(*buffer_size));
michael@0 109 *buffer_size = HANDLE_EINTR(read(fd, buffer, *buffer_size));
michael@0 110 if (*buffer_size == -1) {
michael@0 111 perror("read");
michael@0 112 ok = false;
michael@0 113 }
michael@0 114 }
michael@0 115 if (HANDLE_EINTR(close(fd)) == -1) {
michael@0 116 perror("close");
michael@0 117 ok = false;
michael@0 118 }
michael@0 119 return ok;
michael@0 120 }
michael@0 121
michael@0 122 bool WriteFile(const char* path, const void* buffer, size_t buffer_size) {
michael@0 123 int fd = HANDLE_EINTR(open(path, O_CREAT | O_TRUNC | O_WRONLY, S_IRWXU));
michael@0 124 if (fd == -1) {
michael@0 125 perror("open");
michael@0 126 return false;
michael@0 127 }
michael@0 128
michael@0 129 bool ok = true;
michael@0 130 if (buffer) {
michael@0 131 size_t bytes_written_total = 0;
michael@0 132 ssize_t bytes_written_partial = 0;
michael@0 133 const char* data = reinterpret_cast<const char*>(buffer);
michael@0 134 while (bytes_written_total < buffer_size) {
michael@0 135 bytes_written_partial =
michael@0 136 HANDLE_EINTR(write(fd, data + bytes_written_total,
michael@0 137 buffer_size - bytes_written_total));
michael@0 138 if (bytes_written_partial < 0) {
michael@0 139 perror("write");
michael@0 140 ok = false;
michael@0 141 break;
michael@0 142 }
michael@0 143 bytes_written_total += bytes_written_partial;
michael@0 144 }
michael@0 145 }
michael@0 146 if (HANDLE_EINTR(close(fd)) == -1) {
michael@0 147 perror("close");
michael@0 148 ok = false;
michael@0 149 }
michael@0 150 return ok;
michael@0 151 }
michael@0 152
michael@0 153 } // namespace google_breakpad

mercurial