Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/extract/src/sys.c @ 7:5ab937c03c27

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Apply full RELRO to all generated binaries. Also strip the generated binaries.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 16 Sep 2025 12:37:32 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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1 #include "mem.h"
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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2 #include "outf.h"
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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3 #include "sys.h"
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4
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5 #include <errno.h>
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6 #include <stdarg.h>
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7
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8 #include <sys/stat.h>
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9
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10
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11 /* Define extract_APPLE_IOS if we are on iOS. */
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12 #undef extract_APPLE_IOS
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13 #ifdef __APPLE__
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14 #include "TargetConditionals.h"
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15 #ifdef TARGET_OS_IPHONE
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16 #define extract_APPLE_IOS
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17 #elif TARGET_IPHONE_SIMULATOR
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18 #define extract_APPLE_IOS
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19 #endif
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20 #endif
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21
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22 int extract_systemf(extract_alloc_t *alloc, const char *format, ...)
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23 {
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24 #ifdef extract_APPLE_IOS
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25 /* system() not available on iOS. */
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26 (void) alloc;
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27 (void) format;
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28 errno = ENOTSUP;
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29 return -1;
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30 #else
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31
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32 int e;
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33 char *command;
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34 va_list va;
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35
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36 va_start(va, format);
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37 e = extract_vasprintf(alloc, &command, format, va);
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38 va_end(va);
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39 if (e < 0) return e;
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40 outf("running: %s", command);
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41 e = system(command);
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42 extract_free(alloc, &command);
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43 if (e > 0) {
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44 errno = EIO;
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45 }
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46 return e;
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47
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48 #endif
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49 }
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50
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51 int extract_read_all(extract_alloc_t *alloc, FILE *in, char **o_out)
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52 {
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53 size_t len = 0;
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54 size_t delta = 128;
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55 for(;;) {
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56 size_t n;
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57 if (extract_realloc2(alloc, o_out, len, len + delta + 1)) {
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58 extract_free(alloc, o_out);
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59 return -1;
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60 }
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61 n = fread(*o_out + len, 1 /*size*/, delta /*nmemb*/, in);
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62 len += n;
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63 if (feof(in)) {
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64 (*o_out)[len] = 0;
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65 return 0;
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66 }
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67 if (ferror(in)) {
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68 /* It's weird that fread() and ferror() don't set errno. */
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69 errno = EIO;
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70 extract_free(alloc, o_out);
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71 return -1;
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72 }
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73 }
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74 }
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75
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76 int extract_read_all_path(extract_alloc_t *alloc, const char *path, char **o_text)
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77 {
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78 int e = -1;
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79 FILE *f = NULL;
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80 f = fopen(path, "rb");
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81 if (!f) goto end;
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82 if (extract_read_all(alloc, f, o_text)) goto end;
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83 e = 0;
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84 end:
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85 if (f) fclose(f);
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86 if (e) extract_free(alloc, o_text);
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87 return e;
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88 }
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89
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90 int extract_write_all(const void *data, size_t data_size, const char *path)
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91 {
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92 int e = -1;
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93 FILE *f = fopen(path, "w");
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94 if (!f) goto end;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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95 if (fwrite(data, data_size, 1 /*nmemb*/, f) != 1) goto end;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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96 e = 0;
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97 end:
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98 if (f) fclose(f);
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99 return e;
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100 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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101
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102 int extract_check_path_shell_safe(const char *path)
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103 /* Returns -1 with errno=EINVAL if <path> contains sequences that could make it
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104 unsafe in shell commands. */
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105 {
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106 if (0
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107 || strstr(path, "..")
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108 || strchr(path, '\'')
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109 || strchr(path, '"')
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110 || strchr(path, ' ')
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111 ) {
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112 errno = EINVAL;
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113 return -1;
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114 }
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115 return 0;
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116 }
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117 int extract_remove_directory(extract_alloc_t *alloc, const char *path)
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118 {
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119 if (extract_check_path_shell_safe(path)) {
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120 outf("path_out is unsafe: %s", path);
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121 return -1;
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122 }
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123 return extract_systemf(alloc, "rm -r '%s'", path);
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124 }
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125
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126 #ifdef _WIN32
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127 #include <direct.h>
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128 int extract_mkdir(const char *path, int mode)
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129 {
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130 (void) mode;
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131 return _mkdir(path);
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132 }
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133 #else
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134 int extract_mkdir(const char *path, int mode)
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135 {
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136 return mkdir(path, mode);
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137 }
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138 #endif