|
Link Here
|
| 31 |
* * |
31 |
* * |
| 32 |
* Developed by Arnaud Le Hors * |
32 |
* Developed by Arnaud Le Hors * |
| 33 |
\*****************************************************************************/ |
33 |
\*****************************************************************************/ |
|
|
34 |
|
| 35 |
/* October 2004, source code review by Thomas Biege <thomas@suse.de> */ |
| 36 |
|
| 34 |
/* $XFree86$ */ |
37 |
/* $XFree86$ */ |
| 35 |
|
38 |
|
| 36 |
#include "XpmI.h" |
39 |
#include "XpmI.h" |
|
Link Here
|
| 39 |
unsigned int *used_size, XpmColor *colors, |
42 |
unsigned int *used_size, XpmColor *colors, |
| 40 |
unsigned int ncolors, unsigned int cpp)); |
43 |
unsigned int ncolors, unsigned int cpp)); |
| 41 |
|
44 |
|
| 42 |
LFUNC(WritePixels, void, (char *dataptr, unsigned int *used_size, |
45 |
LFUNC(WritePixels, void, (char *dataptr, unsigned int data_size, |
|
|
46 |
unsigned int *used_size, |
| 43 |
unsigned int width, unsigned int height, |
47 |
unsigned int width, unsigned int height, |
| 44 |
unsigned int cpp, unsigned int *pixels, |
48 |
unsigned int cpp, unsigned int *pixels, |
| 45 |
XpmColor *colors)); |
49 |
XpmColor *colors)); |
| 46 |
|
50 |
|
| 47 |
LFUNC(WriteExtensions, void, (char *dataptr, unsigned int *used_size, |
51 |
LFUNC(WriteExtensions, void, (char *dataptr, unsigned int data_size, |
|
|
52 |
unsigned int *used_size, |
| 48 |
XpmExtension *ext, unsigned int num)); |
53 |
XpmExtension *ext, unsigned int num)); |
| 49 |
|
54 |
|
| 50 |
LFUNC(ExtensionsSize, int, (XpmExtension *ext, unsigned int num)); |
55 |
LFUNC(ExtensionsSize, unsigned int, (XpmExtension *ext, unsigned int num)); |
| 51 |
LFUNC(CommentsSize, int, (XpmInfo *info)); |
56 |
LFUNC(CommentsSize, int, (XpmInfo *info)); |
| 52 |
|
57 |
|
| 53 |
int |
58 |
int |
|
Link Here
|
| 90 |
|
95 |
|
| 91 |
#undef RETURN |
96 |
#undef RETURN |
| 92 |
#define RETURN(status) \ |
97 |
#define RETURN(status) \ |
|
|
98 |
do \ |
| 93 |
{ \ |
99 |
{ \ |
| 94 |
ErrorStatus = status; \ |
100 |
ErrorStatus = status; \ |
| 95 |
goto error; \ |
101 |
goto error; \ |
| 96 |
} |
102 |
}while(0) |
| 97 |
|
103 |
|
| 98 |
int |
104 |
int |
| 99 |
XpmCreateBufferFromXpmImage(buffer_return, image, info) |
105 |
XpmCreateBufferFromXpmImage(buffer_return, image, info) |
|
Link Here
|
| 107 |
unsigned int cmts, extensions, ext_size = 0; |
113 |
unsigned int cmts, extensions, ext_size = 0; |
| 108 |
unsigned int l, cmt_size = 0; |
114 |
unsigned int l, cmt_size = 0; |
| 109 |
char *ptr = NULL, *p; |
115 |
char *ptr = NULL, *p; |
| 110 |
unsigned int ptr_size, used_size; |
116 |
unsigned int ptr_size, used_size, tmp; |
| 111 |
|
117 |
|
| 112 |
*buffer_return = NULL; |
118 |
*buffer_return = NULL; |
| 113 |
|
119 |
|
|
Link Here
|
| 129 |
#ifdef VOID_SPRINTF |
135 |
#ifdef VOID_SPRINTF |
| 130 |
used_size = strlen(buf); |
136 |
used_size = strlen(buf); |
| 131 |
#endif |
137 |
#endif |
| 132 |
ptr_size = used_size + ext_size + cmt_size + 1; |
138 |
ptr_size = used_size + ext_size + cmt_size + 1; /* ptr_size can't be 0 */ |
|
|
139 |
if(ptr_size <= used_size || |
| 140 |
ptr_size <= ext_size || |
| 141 |
ptr_size <= cmt_size) |
| 142 |
{ |
| 143 |
return XpmNoMemory; |
| 144 |
} |
| 133 |
ptr = (char *) XpmMalloc(ptr_size); |
145 |
ptr = (char *) XpmMalloc(ptr_size); |
| 134 |
if (!ptr) |
146 |
if (!ptr) |
| 135 |
return XpmNoMemory; |
147 |
return XpmNoMemory; |
|
Link Here
|
| 140 |
#ifndef VOID_SPRINTF |
152 |
#ifndef VOID_SPRINTF |
| 141 |
used_size += |
153 |
used_size += |
| 142 |
#endif |
154 |
#endif |
| 143 |
sprintf(ptr + used_size, "/*%s*/\n", info->hints_cmt); |
155 |
snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->hints_cmt); |
| 144 |
#ifdef VOID_SPRINTF |
156 |
#ifdef VOID_SPRINTF |
| 145 |
used_size += strlen(info->hints_cmt) + 5; |
157 |
used_size += strlen(info->hints_cmt) + 5; |
| 146 |
#endif |
158 |
#endif |
|
Link Here
|
| 158 |
#ifndef VOID_SPRINTF |
170 |
#ifndef VOID_SPRINTF |
| 159 |
l += |
171 |
l += |
| 160 |
#endif |
172 |
#endif |
| 161 |
sprintf(buf + l, " %d %d", info->x_hotspot, info->y_hotspot); |
173 |
snprintf(buf + l, sizeof(buf)-l, " %d %d", info->x_hotspot, info->y_hotspot); |
| 162 |
#ifdef VOID_SPRINTF |
174 |
#ifdef VOID_SPRINTF |
| 163 |
l = strlen(buf); |
175 |
l = strlen(buf); |
| 164 |
#endif |
176 |
#endif |
|
Link Here
|
| 180 |
l = strlen(buf); |
192 |
l = strlen(buf); |
| 181 |
#endif |
193 |
#endif |
| 182 |
ptr_size += l; |
194 |
ptr_size += l; |
|
|
195 |
if(ptr_size <= l) |
| 196 |
RETURN(XpmNoMemory); |
| 183 |
p = (char *) XpmRealloc(ptr, ptr_size); |
197 |
p = (char *) XpmRealloc(ptr, ptr_size); |
| 184 |
if (!p) |
198 |
if (!p) |
| 185 |
RETURN(XpmNoMemory); |
199 |
RETURN(XpmNoMemory); |
|
Link Here
|
| 192 |
#ifndef VOID_SPRINTF |
206 |
#ifndef VOID_SPRINTF |
| 193 |
used_size += |
207 |
used_size += |
| 194 |
#endif |
208 |
#endif |
| 195 |
sprintf(ptr + used_size, "/*%s*/\n", info->colors_cmt); |
209 |
snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->colors_cmt); |
| 196 |
#ifdef VOID_SPRINTF |
210 |
#ifdef VOID_SPRINTF |
| 197 |
used_size += strlen(info->colors_cmt) + 5; |
211 |
used_size += strlen(info->colors_cmt) + 5; |
| 198 |
#endif |
212 |
#endif |
|
Link Here
|
| 208 |
* 4 = 1 (for '"') + 3 (for '",\n') |
222 |
* 4 = 1 (for '"') + 3 (for '",\n') |
| 209 |
* 1 = - 2 (because the last line does not end with ',\n') + 3 (for '};\n') |
223 |
* 1 = - 2 (because the last line does not end with ',\n') + 3 (for '};\n') |
| 210 |
*/ |
224 |
*/ |
| 211 |
ptr_size += image->height * (image->width * image->cpp + 4) + 1; |
225 |
if(image->width > UINT_MAX / image->cpp || |
|
|
226 |
(tmp = image->width * image->cpp + 4) <= 4 || |
| 227 |
image->height > UINT_MAX / tmp || |
| 228 |
(tmp = image->height * tmp + 1) <= 1 || |
| 229 |
(ptr_size += tmp) <= tmp) |
| 230 |
RETURN(XpmNoMemory); |
| 212 |
|
231 |
|
| 213 |
p = (char *) XpmRealloc(ptr, ptr_size); |
232 |
p = (char *) XpmRealloc(ptr, ptr_size); |
| 214 |
if (!p) |
233 |
if (!p) |
|
Link Here
|
| 220 |
#ifndef VOID_SPRINTF |
239 |
#ifndef VOID_SPRINTF |
| 221 |
used_size += |
240 |
used_size += |
| 222 |
#endif |
241 |
#endif |
| 223 |
sprintf(ptr + used_size, "/*%s*/\n", info->pixels_cmt); |
242 |
snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->pixels_cmt); |
| 224 |
#ifdef VOID_SPRINTF |
243 |
#ifdef VOID_SPRINTF |
| 225 |
used_size += strlen(info->pixels_cmt) + 5; |
244 |
used_size += strlen(info->pixels_cmt) + 5; |
| 226 |
#endif |
245 |
#endif |
| 227 |
} |
246 |
} |
| 228 |
WritePixels(ptr + used_size, &used_size, image->width, image->height, |
247 |
WritePixels(ptr + used_size, ptr_size - used_size, &used_size, image->width, image->height, |
| 229 |
image->cpp, image->data, image->colorTable); |
248 |
image->cpp, image->data, image->colorTable); |
| 230 |
|
249 |
|
| 231 |
/* print extensions */ |
250 |
/* print extensions */ |
| 232 |
if (extensions) |
251 |
if (extensions) |
| 233 |
WriteExtensions(ptr + used_size, &used_size, |
252 |
WriteExtensions(ptr + used_size, ptr_size-used_size, &used_size, |
| 234 |
info->extensions, info->nextensions); |
253 |
info->extensions, info->nextensions); |
| 235 |
|
254 |
|
| 236 |
/* close the array */ |
255 |
/* close the array */ |
|
Link Here
|
| 247 |
return (ErrorStatus); |
266 |
return (ErrorStatus); |
| 248 |
} |
267 |
} |
| 249 |
|
268 |
|
|
|
269 |
|
| 250 |
static int |
270 |
static int |
| 251 |
WriteColors(dataptr, data_size, used_size, colors, ncolors, cpp) |
271 |
WriteColors(dataptr, data_size, used_size, colors, ncolors, cpp) |
| 252 |
char **dataptr; |
272 |
char **dataptr; |
|
Link Here
|
| 256 |
unsigned int ncolors; |
276 |
unsigned int ncolors; |
| 257 |
unsigned int cpp; |
277 |
unsigned int cpp; |
| 258 |
{ |
278 |
{ |
| 259 |
char buf[BUFSIZ]; |
279 |
char buf[BUFSIZ] = {0}; |
| 260 |
unsigned int a, key, l; |
280 |
unsigned int a, key, l; |
| 261 |
char *s, *s2; |
281 |
char *s, *s2; |
| 262 |
char **defaults; |
282 |
char **defaults; |
|
Link Here
|
| 266 |
|
286 |
|
| 267 |
defaults = (char **) colors; |
287 |
defaults = (char **) colors; |
| 268 |
s = buf + 1; |
288 |
s = buf + 1; |
|
|
289 |
if(cpp > (sizeof(buf) - (s-buf))) |
| 290 |
return(XpmNoMemory); |
| 269 |
strncpy(s, *defaults++, cpp); |
291 |
strncpy(s, *defaults++, cpp); |
| 270 |
s += cpp; |
292 |
s += cpp; |
| 271 |
|
293 |
|
|
Link Here
|
| 274 |
#ifndef VOID_SPRINTF |
296 |
#ifndef VOID_SPRINTF |
| 275 |
s += |
297 |
s += |
| 276 |
#endif |
298 |
#endif |
| 277 |
sprintf(s, "\t%s %s", xpmColorKeys[key - 1], s2); |
299 |
/* assume C99 compliance */ |
|
|
300 |
snprintf(s, sizeof(buf) - (s-buf), "\t%s %s", xpmColorKeys[key - 1], s2); |
| 278 |
#ifdef VOID_SPRINTF |
301 |
#ifdef VOID_SPRINTF |
| 279 |
s += strlen(s); |
302 |
s += strlen(s); |
| 280 |
#endif |
303 |
#endif |
|
|
304 |
/* now let's check if s points out-of-bounds */ |
| 305 |
if((s-buf) > sizeof(buf)) |
| 306 |
return(XpmNoMemory); |
| 281 |
} |
307 |
} |
| 282 |
} |
308 |
} |
|
|
309 |
if(sizeof(buf) - (s-buf) < 4) |
| 310 |
return(XpmNoMemory); |
| 283 |
strcpy(s, "\",\n"); |
311 |
strcpy(s, "\",\n"); |
| 284 |
l = s + 3 - buf; |
312 |
l = s + 3 - buf; |
|
|
313 |
if( *data_size >= UINT_MAX-l || |
| 314 |
*data_size + l <= *used_size || |
| 315 |
(*data_size + l - *used_size) <= sizeof(buf)) |
| 316 |
return(XpmNoMemory); |
| 285 |
s = (char *) XpmRealloc(*dataptr, *data_size + l); |
317 |
s = (char *) XpmRealloc(*dataptr, *data_size + l); |
| 286 |
if (!s) |
318 |
if (!s) |
| 287 |
return (XpmNoMemory); |
319 |
return (XpmNoMemory); |
|
Link Here
|
| 294 |
} |
326 |
} |
| 295 |
|
327 |
|
| 296 |
static void |
328 |
static void |
| 297 |
WritePixels(dataptr, used_size, width, height, cpp, pixels, colors) |
329 |
WritePixels(dataptr, data_size, used_size, width, height, cpp, pixels, colors) |
| 298 |
char *dataptr; |
330 |
char *dataptr; |
|
|
331 |
unsigned int data_size; |
| 299 |
unsigned int *used_size; |
332 |
unsigned int *used_size; |
| 300 |
unsigned int width; |
333 |
unsigned int width; |
| 301 |
unsigned int height; |
334 |
unsigned int height; |
|
Link Here
|
| 306 |
char *s = dataptr; |
339 |
char *s = dataptr; |
| 307 |
unsigned int x, y, h; |
340 |
unsigned int x, y, h; |
| 308 |
|
341 |
|
|
|
342 |
if(height <= 1) |
| 343 |
return; |
| 344 |
|
| 309 |
h = height - 1; |
345 |
h = height - 1; |
| 310 |
for (y = 0; y < h; y++) { |
346 |
for (y = 0; y < h; y++) { |
| 311 |
*s++ = '"'; |
347 |
*s++ = '"'; |
| 312 |
for (x = 0; x < width; x++, pixels++) { |
348 |
for (x = 0; x < width; x++, pixels++) { |
| 313 |
strncpy(s, colors[*pixels].string, cpp); |
349 |
if(cpp >= (data_size - (s-dataptr))) |
|
|
350 |
return; |
| 351 |
strncpy(s, colors[*pixels].string, cpp); /* how can we trust *pixels? :-\ */ |
| 314 |
s += cpp; |
352 |
s += cpp; |
| 315 |
} |
353 |
} |
|
|
354 |
if((data_size - (s-dataptr)) < 4) |
| 355 |
return; |
| 316 |
strcpy(s, "\",\n"); |
356 |
strcpy(s, "\",\n"); |
| 317 |
s += 3; |
357 |
s += 3; |
| 318 |
} |
358 |
} |
| 319 |
/* duplicate some code to avoid a test in the loop */ |
359 |
/* duplicate some code to avoid a test in the loop */ |
| 320 |
*s++ = '"'; |
360 |
*s++ = '"'; |
| 321 |
for (x = 0; x < width; x++, pixels++) { |
361 |
for (x = 0; x < width; x++, pixels++) { |
| 322 |
strncpy(s, colors[*pixels].string, cpp); |
362 |
if(cpp >= (data_size - (s-dataptr))) |
|
|
363 |
return; |
| 364 |
strncpy(s, colors[*pixels].string, cpp); /* how can we trust *pixels? */ |
| 323 |
s += cpp; |
365 |
s += cpp; |
| 324 |
} |
366 |
} |
| 325 |
*s++ = '"'; |
367 |
*s++ = '"'; |
| 326 |
*used_size += s - dataptr; |
368 |
*used_size += s - dataptr; |
| 327 |
} |
369 |
} |
| 328 |
|
370 |
|
| 329 |
static int |
371 |
static unsigned int |
| 330 |
ExtensionsSize(ext, num) |
372 |
ExtensionsSize(ext, num) |
| 331 |
XpmExtension *ext; |
373 |
XpmExtension *ext; |
| 332 |
unsigned int num; |
374 |
unsigned int num; |
|
Link Here
|
| 335 |
char **line; |
377 |
char **line; |
| 336 |
|
378 |
|
| 337 |
size = 0; |
379 |
size = 0; |
|
|
380 |
if(num == 0) |
| 381 |
return(0); /* ok? */ |
| 338 |
for (x = 0; x < num; x++, ext++) { |
382 |
for (x = 0; x < num; x++, ext++) { |
| 339 |
/* 11 = 10 (for ',\n"XPMEXT ') + 1 (for '"') */ |
383 |
/* 11 = 10 (for ',\n"XPMEXT ') + 1 (for '"') */ |
| 340 |
size += strlen(ext->name) + 11; |
384 |
size += strlen(ext->name) + 11; |
| 341 |
a = ext->nlines; |
385 |
a = ext->nlines; /* how can we trust ext->nlines to be not out-of-bounds? */ |
| 342 |
for (y = 0, line = ext->lines; y < a; y++, line++) |
386 |
for (y = 0, line = ext->lines; y < a; y++, line++) |
| 343 |
/* 4 = 3 (for ',\n"') + 1 (for '"') */ |
387 |
/* 4 = 3 (for ',\n"') + 1 (for '"') */ |
| 344 |
size += strlen(*line) + 4; |
388 |
size += strlen(*line) + 4; |
| 345 |
} |
389 |
} |
| 346 |
/* 13 is for ',\n"XPMENDEXT"' */ |
390 |
/* 13 is for ',\n"XPMENDEXT"' */ |
|
|
391 |
if(size > UINT_MAX - 13) /* unlikely */ |
| 392 |
return(0); |
| 347 |
return size + 13; |
393 |
return size + 13; |
| 348 |
} |
394 |
} |
| 349 |
|
395 |
|
| 350 |
static void |
396 |
static void |
| 351 |
WriteExtensions(dataptr, used_size, ext, num) |
397 |
WriteExtensions(dataptr, data_size, used_size, ext, num) |
| 352 |
char *dataptr; |
398 |
char *dataptr; |
|
|
399 |
unsigned int data_size; |
| 353 |
unsigned int *used_size; |
400 |
unsigned int *used_size; |
| 354 |
XpmExtension *ext; |
401 |
XpmExtension *ext; |
| 355 |
unsigned int num; |
402 |
unsigned int num; |
|
Link Here
|
| 362 |
#ifndef VOID_SPRINTF |
409 |
#ifndef VOID_SPRINTF |
| 363 |
s += |
410 |
s += |
| 364 |
#endif |
411 |
#endif |
| 365 |
sprintf(s, ",\n\"XPMEXT %s\"", ext->name); |
412 |
snprintf(s, data_size - (s-dataptr), ",\n\"XPMEXT %s\"", ext->name); |
| 366 |
#ifdef VOID_SPRINTF |
413 |
#ifdef VOID_SPRINTF |
| 367 |
s += strlen(ext->name) + 11; |
414 |
s += strlen(ext->name) + 11; |
| 368 |
#endif |
415 |
#endif |
|
Link Here
|
| 371 |
#ifndef VOID_SPRINTF |
418 |
#ifndef VOID_SPRINTF |
| 372 |
s += |
419 |
s += |
| 373 |
#endif |
420 |
#endif |
| 374 |
sprintf(s, ",\n\"%s\"", *line); |
421 |
snprintf(s, data_size - (s-dataptr), ",\n\"%s\"", *line); |
| 375 |
#ifdef VOID_SPRINTF |
422 |
#ifdef VOID_SPRINTF |
| 376 |
s += strlen(*line) + 4; |
423 |
s += strlen(*line) + 4; |
| 377 |
#endif |
424 |
#endif |
| 378 |
} |
425 |
} |
| 379 |
} |
426 |
} |
| 380 |
strcpy(s, ",\n\"XPMENDEXT\""); |
427 |
strncpy(s, ",\n\"XPMENDEXT\"", data_size - (s-dataptr)-1); |
| 381 |
*used_size += s - dataptr + 13; |
428 |
*used_size += s - dataptr + 13; |
| 382 |
} |
429 |
} |
| 383 |
|
430 |
|
|
Link Here
|
| 388 |
int size = 0; |
435 |
int size = 0; |
| 389 |
|
436 |
|
| 390 |
/* 5 = 2 (for "/_*") + 3 (for "*_/\n") */ |
437 |
/* 5 = 2 (for "/_*") + 3 (for "*_/\n") */ |
|
|
438 |
/* wrap possible but *very* unlikely */ |
| 391 |
if (info->hints_cmt) |
439 |
if (info->hints_cmt) |
| 392 |
size += 5 + strlen(info->hints_cmt); |
440 |
size += 5 + strlen(info->hints_cmt); |
| 393 |
|
441 |
|