Mercurial > hg > xemacs-beta
annotate lib-src/insert-data-in-exec.c @ 5919:2800105fcc9f cygwin
root of all my changes
| author | Henry Thompson <ht@markup.co.uk> |
|---|---|
| date | Thu, 16 Dec 2021 11:20:17 +0000 |
| parents | 86d33ddc7fd6 |
| children |
| rev | line source |
|---|---|
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Add BSD header to lib-src/insert-data-in-exec.c, with permission of Olivier
Jerry James <james@xemacs.org>
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1 /* Copies the dump file inside the xemacs executable. |
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dfc9fe46c294
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2 Copyright (C) 2003-2004 Olivier Galibert. |
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3 Copyright (C) 2003 Larry McVoy. |
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4 |
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5 Redistribution and use in source and binary forms, with or without |
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6 modification, are permitted provided that the following conditions are met: |
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7 |
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8 1. Redistributions of source code must retain the above copyright notice, |
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9 this list of conditions and the following disclaimer. |
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10 2. Redistributions in binary form must reproduce the above copyright notice, |
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11 this list of conditions and the following disclaimer in the documentation |
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12 and/or other materials provided with the distribution. |
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13 |
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14 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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15 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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16 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LARRY |
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17 MCVOY, THE XEMACS PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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18 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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19 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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20 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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21 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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22 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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23 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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24 |
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25 The views and conclusions contained in the software and documentation are those |
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26 of the authors and should not be interpreted as representing official policies, |
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27 either expressed or implied, of the XEmacs Project. |
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28 |
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29 The "key" array is the work of Larry McVoy. See |
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30 http://lkml.org/lkml/2003/7/11/141 for more information. */ |
| 2015 | 31 |
| 32 #include <stdio.h> | |
| 33 #include <stdlib.h> | |
| 34 #include <string.h> | |
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35 #include <config.h> |
| 2015 | 36 |
| 37 static const unsigned char key[] = { | |
| 38 255, | |
| 39 6, | |
| 40 1, | |
| 41 2, | |
| 42 3, | |
| 43 4, | |
| 44 255, | |
| 45 3, | |
| 46 9, | |
| 47 62, | |
| 48 255, | |
| 49 10, | |
| 50 4, | |
| 51 61, | |
| 52 255 | |
| 53 }; | |
| 54 | |
| 55 int main(int argc, char **argv) | |
| 56 { | |
| 57 FILE *te, *xe, *dump; | |
| 58 unsigned char *xed, *p; | |
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59 size_t size, size_dump, size1, i; |
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60 size_t max_size, offset; |
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61 OFF_T off; |
| 2015 | 62 |
| 63 char msg[65536]; | |
| 64 | |
| 65 if(argc != 6 && (argc != 3 || strcmp(argv[1], "-s"))) { | |
| 66 fprintf(stderr, "Usage:\n%s temacs xemacs.dmp xemacs size offset\n%s -s xemacs.dmp\n", argv[0], argv[0]); | |
| 67 exit(1); | |
| 68 } | |
| 69 | |
| 70 if(argc == 3) { | |
| 71 sprintf(msg, "Opening %s failed", argv[2]); | |
| 72 dump = fopen(argv[2], "rb+"); | |
| 73 if(!dump) { | |
| 74 perror(msg); | |
| 75 exit(1); | |
| 76 } | |
| 77 | |
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78 if(FSEEK(dump, 0, SEEK_END)) { |
| 2015 | 79 perror("fseek end dump"); |
| 80 exit(1); | |
| 81 } | |
| 82 | |
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83 off = FTELL(dump); |
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84 if(off == -1) { |
| 2015 | 85 perror("ftell dump"); |
| 86 exit(1); | |
| 87 } | |
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88 size = (size_t)off; |
| 2015 | 89 |
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90 printf("%zu\n", size); |
| 2015 | 91 exit(0); |
| 92 } | |
| 93 | |
| 94 | |
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95 max_size = strtoul(argv[4], 0, 10); |
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96 offset = strtoul(argv[5], 0, 10); |
| 2015 | 97 |
| 98 sprintf(msg, "Opening %s failed", argv[1]); | |
| 99 te = fopen(argv[1], "rb"); | |
| 100 if(!te) { | |
| 101 perror(msg); | |
| 102 exit(1); | |
| 103 } | |
| 104 | |
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105 if(FSEEK(te, 0, SEEK_END)) { |
| 2015 | 106 perror("fseek end"); |
| 107 exit(1); | |
| 108 } | |
| 109 | |
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110 off = FTELL(te); |
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111 if(off == -1) { |
| 2015 | 112 perror("ftell"); |
| 113 exit(1); | |
| 114 } | |
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115 size = (size_t)off; |
| 2015 | 116 |
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117 if(FSEEK(te, 0, SEEK_SET)) { |
| 2015 | 118 perror("fseek beginning"); |
| 119 exit(1); | |
| 120 } | |
| 121 | |
| 122 xed = malloc(size); | |
| 123 if(!xed) { | |
| 124 perror("malloc"); | |
| 125 exit(1); | |
| 126 } | |
| 127 | |
| 128 size1 = fread(xed, 1, size, te); | |
| 129 if(size1 != size) { | |
| 130 if(ferror(te)) { | |
| 131 perror("fread temacs"); | |
| 132 exit(1); | |
| 133 } | |
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134 fprintf(stderr, "Fread returned %zu, expected %zu ?\n", size1, size); |
| 2015 | 135 exit(1); |
| 136 } | |
| 137 | |
| 138 if(fclose(te)) { | |
| 139 perror("fclose temacs"); | |
| 140 exit(1); | |
| 141 } | |
| 142 | |
| 143 p = xed; | |
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144 for(i=0; i<size-sizeof(key); i++) { |
| 2015 | 145 if(!memcmp(p, key, sizeof(key))) |
| 146 goto found; | |
| 147 p++; | |
| 148 } | |
| 149 | |
| 150 fprintf(stderr, "dumped_data key not found in executable.\n"); | |
| 151 exit(1); | |
| 152 | |
| 153 found: | |
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154 fprintf(stderr, "dumped_data found at offset 0x%zx, patching.\n", i); |
| 2015 | 155 |
| 156 sprintf(msg, "Opening %s failed", argv[2]); | |
| 2502 | 157 dump = fopen(argv[2], "rb"); |
| 2015 | 158 if(!dump) { |
| 159 perror(msg); | |
| 160 exit(1); | |
| 161 } | |
| 162 | |
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163 if(FSEEK(dump, 0, SEEK_END)) { |
| 2015 | 164 perror("fseek end dump"); |
| 165 exit(1); | |
| 166 } | |
| 167 | |
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168 off = FTELL(dump); |
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169 if(off == -1) { |
| 2015 | 170 perror("ftell dump"); |
| 171 exit(1); | |
| 172 } | |
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173 size_dump = (size_t)off; |
| 2015 | 174 |
| 175 if(size_dump > max_size) { | |
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176 fprintf(stderr, "Dump file too big for available space (max=%zu, dump=%zu)\n", max_size, size_dump); |
| 2015 | 177 exit(2); |
| 178 } | |
| 179 | |
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180 if(FSEEK(dump, 0, SEEK_SET)) { |
| 2015 | 181 perror("fseek beginning dump"); |
| 182 exit(1); | |
| 183 } | |
| 184 | |
| 185 size1 = fread(xed+i+offset, 1, size_dump, dump); | |
| 186 if(size1 != size_dump) { | |
| 187 if(ferror(dump)) { | |
| 188 perror("fread dump"); | |
| 189 exit(1); | |
| 190 } | |
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191 fprintf(stderr, "Fread dump returned %zu, expected %zu ?\n", size1, size_dump); |
| 2015 | 192 exit(1); |
| 193 } | |
| 194 | |
| 195 if(fclose(dump)) { | |
| 196 perror("fclose dump"); | |
| 197 exit(1); | |
| 198 } | |
| 199 | |
| 200 memset(xed+i, 0, offset); | |
| 201 | |
| 202 xed[i ] = size_dump; | |
| 203 xed[i+1] = size_dump >> 8; | |
| 204 xed[i+2] = size_dump >> 16; | |
| 205 xed[i+3] = size_dump >> 24; | |
| 206 | |
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207 fprintf(stderr, "dumped_data found at offset 0x%zx, patching.\n", i); |
| 2015 | 208 |
| 209 sprintf(msg, "Opening %s failed", argv[3]); | |
| 210 xe = fopen(argv[3], "wb"); | |
| 211 if(!xe) { | |
| 212 perror(msg); | |
| 213 exit(1); | |
| 214 } | |
| 215 | |
| 216 size1 = fwrite(xed, 1, size, xe); | |
| 217 if(size1 != size) { | |
| 218 if(ferror(xe)) { | |
| 219 perror("fwrite xemacs"); | |
| 220 exit(1); | |
| 221 } | |
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222 fprintf(stderr, "Fwrite xemacs returned %zu, expected %zu ?\n", size1, size); |
| 2015 | 223 exit(1); |
| 224 } | |
| 225 | |
| 226 if(fclose(xe)) { | |
| 227 perror("fclose xemacs"); | |
| 228 exit(1); | |
| 229 } | |
| 230 | |
| 231 exit(0); | |
| 232 } | |
| 233 |