1 /*
2 * cjpeg.c
3 *
4 * This file was part of the Independent JPEG Group's software:
5 * Copyright (C) 1991-1998, Thomas G. Lane.
6 * Modified 2003-2011 by Guido Vollbeding.
7 * libjpeg-turbo Modifications:
8 * Copyright (C) 2010, 2013-2014, 2017, 2019-2021, D. R. Commander.
9 * For conditions of distribution and use, see the accompanying README.ijg
10 * file.
11 *
12 * This file contains a command-line user interface for the JPEG compressor.
13 * It should work on any system with Unix- or MS-DOS-style command lines.
14 *
15 * Two different command line styles are permitted, depending on the
16 * compile-time switch TWO_FILE_COMMANDLINE:
17 * cjpeg [options] inputfile outputfile
18 * cjpeg [options] [inputfile]
19 * In the second style, output is always to standard output, which you'd
20 * normally redirect to a file or pipe to some other program. Input is
21 * either from a named file or from standard input (typically redirected).
22 * The second style is convenient on Unix but is unhelpful on systems that
23 * don't support pipes. Also, you MUST use the first style if your system
24 * doesn't do binary I/O to stdin/stdout.
25 * To simplify script writing, the "-outfile" switch is provided. The syntax
26 * cjpeg [options] -outfile outputfile inputfile
27 * works regardless of which command line style is used.
28 */
29
30 #ifdef CJPEG_FUZZER
31 #define JPEG_INTERNALS
32 #endif
33 #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
34 #include "jversion.h" /* for version message */
35 #include "jconfigint.h"
36
37 #ifndef HAVE_STDLIB_H /* <stdlib.h> should declare malloc(),free() */
38 extern void *malloc(size_t size);
39 extern void free(void *ptr);
40 #endif
41
42 #ifdef USE_CCOMMAND /* command-line reader for Macintosh */
43 #ifdef __MWERKS__
44 #include <SIOUX.h> /* Metrowerks needs this */
45 #include <console.h> /* ... and this */
46 #endif
47 #ifdef THINK_C
48 #include <console.h> /* Think declares it here */
49 #endif
50 #endif
51
52
53 /* Create the add-on message string table. */
54
55 #define JMESSAGE(code, string) string,
56
57 static const char * const cdjpeg_message_table[] = {
58 #include "cderror.h"
59 NULL
60 };
61
62
63 /*
64 * This routine determines what format the input file is,
65 * and selects the appropriate input-reading module.
66 *
67 * To determine which family of input formats the file belongs to,
68 * we may look only at the first byte of the file, since C does not
69 * guarantee that more than one character can be pushed back with ungetc.
70 * Looking at additional bytes would require one of these approaches:
71 * 1) assume we can fseek() the input file (fails for piped input);
72 * 2) assume we can push back more than one character (works in
73 * some C implementations, but unportable);
74 * 3) provide our own buffering (breaks input readers that want to use
75 * stdio directly);
76 * or 4) don't put back the data, and modify the input_init methods to assume
77 * they start reading after the start of file.
78 * #1 is attractive for MS-DOS but is untenable on Unix.
79 *
80 * The most portable solution for file types that can't be identified by their
81 * first byte is to make the user tell us what they are. This is also the
82 * only approach for "raw" file types that contain only arbitrary values.
83 * We presently apply this method for Targa files. Most of the time Targa
84 * files start with 0x00, so we recognize that case. Potentially, however,
85 * a Targa file could start with any byte value (byte 0 is the length of the
86 * seldom-used ID field), so we provide a switch to force Targa input mode.
87 */
88
89 static boolean is_targa; /* records user -targa switch */
90
91
92 LOCAL(cjpeg_source_ptr)
select_file_type(j_compress_ptr cinfo,FILE * infile)93 select_file_type(j_compress_ptr cinfo, FILE *infile)
94 {
95 int c;
96
97 if (is_targa) {
98 #ifdef TARGA_SUPPORTED
99 return jinit_read_targa(cinfo);
100 #else
101 ERREXIT(cinfo, JERR_TGA_NOTCOMP);
102 #endif
103 }
104
105 if ((c = getc(infile)) == EOF)
106 ERREXIT(cinfo, JERR_INPUT_EMPTY);
107 if (ungetc(c, infile) == EOF)
108 ERREXIT(cinfo, JERR_UNGETC_FAILED);
109
110 switch (c) {
111 #ifdef BMP_SUPPORTED
112 case 'B':
113 return jinit_read_bmp(cinfo, TRUE);
114 #endif
115 #ifdef GIF_SUPPORTED
116 case 'G':
117 return jinit_read_gif(cinfo);
118 #endif
119 #ifdef PPM_SUPPORTED
120 case 'P':
121 return jinit_read_ppm(cinfo);
122 #endif
123 #ifdef TARGA_SUPPORTED
124 case 0x00:
125 return jinit_read_targa(cinfo);
126 #endif
127 default:
128 ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
129 break;
130 }
131
132 return NULL; /* suppress compiler warnings */
133 }
134
135
136 /*
137 * Argument-parsing code.
138 * The switch parser is designed to be useful with DOS-style command line
139 * syntax, ie, intermixed switches and file names, where only the switches
140 * to the left of a given file name affect processing of that file.
141 * The main program in this file doesn't actually use this capability...
142 */
143
144
145 static const char *progname; /* program name for error messages */
146 static char *icc_filename; /* for -icc switch */
147 static char *outfilename; /* for -outfile switch */
148 boolean memdst; /* for -memdst switch */
149 boolean report; /* for -report switch */
150
151
152 #ifdef CJPEG_FUZZER
153
154 #include <setjmp.h>
155
156 struct my_error_mgr {
157 struct jpeg_error_mgr pub;
158 jmp_buf setjmp_buffer;
159 };
160
my_error_exit(j_common_ptr cinfo)161 void my_error_exit(j_common_ptr cinfo)
162 {
163 struct my_error_mgr *myerr = (struct my_error_mgr *)cinfo->err;
164
165 longjmp(myerr->setjmp_buffer, 1);
166 }
167
my_emit_message(j_common_ptr cinfo,int msg_level)168 static void my_emit_message(j_common_ptr cinfo, int msg_level)
169 {
170 if (msg_level < 0)
171 cinfo->err->num_warnings++;
172 }
173
174 #define HANDLE_ERROR() { \
175 if (cinfo.global_state > CSTATE_START) { \
176 if (memdst && outbuffer) \
177 (*cinfo.dest->term_destination) (&cinfo); \
178 jpeg_abort_compress(&cinfo); \
179 } \
180 jpeg_destroy_compress(&cinfo); \
181 if (input_file != stdin && input_file != NULL) \
182 fclose(input_file); \
183 if (memdst) \
184 free(outbuffer); \
185 return EXIT_FAILURE; \
186 }
187
188 #endif
189
190
191 LOCAL(void)
usage(void)192 usage(void)
193 /* complain about bad command line */
194 {
195 fprintf(stderr, "usage: %s [switches] ", progname);
196 #ifdef TWO_FILE_COMMANDLINE
197 fprintf(stderr, "inputfile outputfile\n");
198 #else
199 fprintf(stderr, "[inputfile]\n");
200 #endif
201
202 fprintf(stderr, "Switches (names may be abbreviated):\n");
203 fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is most useful range,\n");
204 fprintf(stderr, " default is 75)\n");
205 fprintf(stderr, " -grayscale Create monochrome JPEG file\n");
206 fprintf(stderr, " -rgb Create RGB JPEG file\n");
207 #ifdef ENTROPY_OPT_SUPPORTED
208 fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
209 #endif
210 #ifdef C_PROGRESSIVE_SUPPORTED
211 fprintf(stderr, " -progressive Create progressive JPEG file\n");
212 #endif
213 #ifdef TARGA_SUPPORTED
214 fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n");
215 #endif
216 fprintf(stderr, "Switches for advanced users:\n");
217 #ifdef C_ARITH_CODING_SUPPORTED
218 fprintf(stderr, " -arithmetic Use arithmetic coding\n");
219 #endif
220 #ifdef DCT_ISLOW_SUPPORTED
221 fprintf(stderr, " -dct int Use accurate integer DCT method%s\n",
222 (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
223 #endif
224 #ifdef DCT_IFAST_SUPPORTED
225 fprintf(stderr, " -dct fast Use less accurate integer DCT method [legacy feature]%s\n",
226 (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
227 #endif
228 #ifdef DCT_FLOAT_SUPPORTED
229 fprintf(stderr, " -dct float Use floating-point DCT method [legacy feature]%s\n",
230 (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
231 #endif
232 fprintf(stderr, " -icc FILE Embed ICC profile contained in FILE\n");
233 fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
234 #ifdef INPUT_SMOOTHING_SUPPORTED
235 fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n");
236 #endif
237 fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
238 fprintf(stderr, " -outfile name Specify name for output file\n");
239 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
240 fprintf(stderr, " -memdst Compress to memory instead of file (useful for benchmarking)\n");
241 #endif
242 fprintf(stderr, " -report Report compression progress\n");
243 fprintf(stderr, " -verbose or -debug Emit debug output\n");
244 fprintf(stderr, " -version Print version information and exit\n");
245 fprintf(stderr, "Switches for wizards:\n");
246 fprintf(stderr, " -baseline Force baseline quantization tables\n");
247 fprintf(stderr, " -qtables FILE Use quantization tables given in FILE\n");
248 fprintf(stderr, " -qslots N[,...] Set component quantization tables\n");
249 fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n");
250 #ifdef C_MULTISCAN_FILES_SUPPORTED
251 fprintf(stderr, " -scans FILE Create multi-scan JPEG per script FILE\n");
252 #endif
253 exit(EXIT_FAILURE);
254 }
255
256
257 LOCAL(int)
parse_switches(j_compress_ptr cinfo,int argc,char ** argv,int last_file_arg_seen,boolean for_real)258 parse_switches(j_compress_ptr cinfo, int argc, char **argv,
259 int last_file_arg_seen, boolean for_real)
260 /* Parse optional switches.
261 * Returns argv[] index of first file-name argument (== argc if none).
262 * Any file names with indexes <= last_file_arg_seen are ignored;
263 * they have presumably been processed in a previous iteration.
264 * (Pass 0 for last_file_arg_seen on the first or only iteration.)
265 * for_real is FALSE on the first (dummy) pass; we may skip any expensive
266 * processing.
267 */
268 {
269 int argn;
270 char *arg;
271 boolean force_baseline;
272 boolean simple_progressive;
273 char *qualityarg = NULL; /* saves -quality parm if any */
274 char *qtablefile = NULL; /* saves -qtables filename if any */
275 char *qslotsarg = NULL; /* saves -qslots parm if any */
276 char *samplearg = NULL; /* saves -sample parm if any */
277 char *scansarg = NULL; /* saves -scans parm if any */
278
279 /* Set up default JPEG parameters. */
280
281 force_baseline = FALSE; /* by default, allow 16-bit quantizers */
282 simple_progressive = FALSE;
283 is_targa = FALSE;
284 icc_filename = NULL;
285 outfilename = NULL;
286 memdst = FALSE;
287 report = FALSE;
288 cinfo->err->trace_level = 0;
289
290 /* Scan command line options, adjust parameters */
291
292 for (argn = 1; argn < argc; argn++) {
293 arg = argv[argn];
294 if (*arg != '-') {
295 /* Not a switch, must be a file name argument */
296 if (argn <= last_file_arg_seen) {
297 outfilename = NULL; /* -outfile applies to just one input file */
298 continue; /* ignore this name if previously processed */
299 }
300 break; /* else done parsing switches */
301 }
302 arg++; /* advance past switch marker character */
303
304 if (keymatch(arg, "arithmetic", 1)) {
305 /* Use arithmetic coding. */
306 #ifdef C_ARITH_CODING_SUPPORTED
307 cinfo->arith_code = TRUE;
308 #else
309 fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
310 progname);
311 exit(EXIT_FAILURE);
312 #endif
313
314 } else if (keymatch(arg, "baseline", 1)) {
315 /* Force baseline-compatible output (8-bit quantizer values). */
316 force_baseline = TRUE;
317
318 } else if (keymatch(arg, "dct", 2)) {
319 /* Select DCT algorithm. */
320 if (++argn >= argc) /* advance to next argument */
321 usage();
322 if (keymatch(argv[argn], "int", 1)) {
323 cinfo->dct_method = JDCT_ISLOW;
324 } else if (keymatch(argv[argn], "fast", 2)) {
325 cinfo->dct_method = JDCT_IFAST;
326 } else if (keymatch(argv[argn], "float", 2)) {
327 cinfo->dct_method = JDCT_FLOAT;
328 } else
329 usage();
330
331 } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
332 /* Enable debug printouts. */
333 /* On first -d, print version identification */
334 static boolean printed_version = FALSE;
335
336 if (!printed_version) {
337 fprintf(stderr, "%s version %s (build %s)\n",
338 PACKAGE_NAME, VERSION, BUILD);
339 fprintf(stderr, "%s\n\n", JCOPYRIGHT);
340 fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
341 JVERSION);
342 printed_version = TRUE;
343 }
344 cinfo->err->trace_level++;
345
346 } else if (keymatch(arg, "version", 4)) {
347 fprintf(stderr, "%s version %s (build %s)\n",
348 PACKAGE_NAME, VERSION, BUILD);
349 exit(EXIT_SUCCESS);
350
351 } else if (keymatch(arg, "grayscale", 2) ||
352 keymatch(arg, "greyscale", 2)) {
353 /* Force a monochrome JPEG file to be generated. */
354 jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
355
356 } else if (keymatch(arg, "rgb", 3)) {
357 /* Force an RGB JPEG file to be generated. */
358 jpeg_set_colorspace(cinfo, JCS_RGB);
359
360 } else if (keymatch(arg, "icc", 1)) {
361 /* Set ICC filename. */
362 if (++argn >= argc) /* advance to next argument */
363 usage();
364 icc_filename = argv[argn];
365
366 } else if (keymatch(arg, "maxmemory", 3)) {
367 /* Maximum memory in Kb (or Mb with 'm'). */
368 long lval;
369 char ch = 'x';
370
371 if (++argn >= argc) /* advance to next argument */
372 usage();
373 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
374 usage();
375 if (ch == 'm' || ch == 'M')
376 lval *= 1000L;
377 cinfo->mem->max_memory_to_use = lval * 1000L;
378
379 } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
380 /* Enable entropy parm optimization. */
381 #ifdef ENTROPY_OPT_SUPPORTED
382 cinfo->optimize_coding = TRUE;
383 #else
384 fprintf(stderr, "%s: sorry, entropy optimization was not compiled in\n",
385 progname);
386 exit(EXIT_FAILURE);
387 #endif
388
389 } else if (keymatch(arg, "outfile", 4)) {
390 /* Set output file name. */
391 if (++argn >= argc) /* advance to next argument */
392 usage();
393 outfilename = argv[argn]; /* save it away for later use */
394
395 } else if (keymatch(arg, "progressive", 1)) {
396 /* Select simple progressive mode. */
397 #ifdef C_PROGRESSIVE_SUPPORTED
398 simple_progressive = TRUE;
399 /* We must postpone execution until num_components is known. */
400 #else
401 fprintf(stderr, "%s: sorry, progressive output was not compiled in\n",
402 progname);
403 exit(EXIT_FAILURE);
404 #endif
405
406 } else if (keymatch(arg, "memdst", 2)) {
407 /* Use in-memory destination manager */
408 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
409 memdst = TRUE;
410 #else
411 fprintf(stderr, "%s: sorry, in-memory destination manager was not compiled in\n",
412 progname);
413 exit(EXIT_FAILURE);
414 #endif
415
416 } else if (keymatch(arg, "quality", 1)) {
417 /* Quality ratings (quantization table scaling factors). */
418 if (++argn >= argc) /* advance to next argument */
419 usage();
420 qualityarg = argv[argn];
421
422 } else if (keymatch(arg, "qslots", 2)) {
423 /* Quantization table slot numbers. */
424 if (++argn >= argc) /* advance to next argument */
425 usage();
426 qslotsarg = argv[argn];
427 /* Must delay setting qslots until after we have processed any
428 * colorspace-determining switches, since jpeg_set_colorspace sets
429 * default quant table numbers.
430 */
431
432 } else if (keymatch(arg, "qtables", 2)) {
433 /* Quantization tables fetched from file. */
434 if (++argn >= argc) /* advance to next argument */
435 usage();
436 qtablefile = argv[argn];
437 /* We postpone actually reading the file in case -quality comes later. */
438
439 } else if (keymatch(arg, "report", 3)) {
440 report = TRUE;
441
442 } else if (keymatch(arg, "restart", 1)) {
443 /* Restart interval in MCU rows (or in MCUs with 'b'). */
444 long lval;
445 char ch = 'x';
446
447 if (++argn >= argc) /* advance to next argument */
448 usage();
449 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
450 usage();
451 if (lval < 0 || lval > 65535L)
452 usage();
453 if (ch == 'b' || ch == 'B') {
454 cinfo->restart_interval = (unsigned int)lval;
455 cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
456 } else {
457 cinfo->restart_in_rows = (int)lval;
458 /* restart_interval will be computed during startup */
459 }
460
461 } else if (keymatch(arg, "sample", 2)) {
462 /* Set sampling factors. */
463 if (++argn >= argc) /* advance to next argument */
464 usage();
465 samplearg = argv[argn];
466 /* Must delay setting sample factors until after we have processed any
467 * colorspace-determining switches, since jpeg_set_colorspace sets
468 * default sampling factors.
469 */
470
471 } else if (keymatch(arg, "scans", 4)) {
472 /* Set scan script. */
473 #ifdef C_MULTISCAN_FILES_SUPPORTED
474 if (++argn >= argc) /* advance to next argument */
475 usage();
476 scansarg = argv[argn];
477 /* We must postpone reading the file in case -progressive appears. */
478 #else
479 fprintf(stderr, "%s: sorry, multi-scan output was not compiled in\n",
480 progname);
481 exit(EXIT_FAILURE);
482 #endif
483
484 } else if (keymatch(arg, "smooth", 2)) {
485 /* Set input smoothing factor. */
486 int val;
487
488 if (++argn >= argc) /* advance to next argument */
489 usage();
490 if (sscanf(argv[argn], "%d", &val) != 1)
491 usage();
492 if (val < 0 || val > 100)
493 usage();
494 cinfo->smoothing_factor = val;
495
496 } else if (keymatch(arg, "targa", 1)) {
497 /* Input file is Targa format. */
498 is_targa = TRUE;
499
500 } else {
501 usage(); /* bogus switch */
502 }
503 }
504
505 /* Post-switch-scanning cleanup */
506
507 if (for_real) {
508
509 /* Set quantization tables for selected quality. */
510 /* Some or all may be overridden if -qtables is present. */
511 if (qualityarg != NULL) /* process -quality if it was present */
512 if (!set_quality_ratings(cinfo, qualityarg, force_baseline))
513 usage();
514
515 if (qtablefile != NULL) /* process -qtables if it was present */
516 if (!read_quant_tables(cinfo, qtablefile, force_baseline))
517 usage();
518
519 if (qslotsarg != NULL) /* process -qslots if it was present */
520 if (!set_quant_slots(cinfo, qslotsarg))
521 usage();
522
523 if (samplearg != NULL) /* process -sample if it was present */
524 if (!set_sample_factors(cinfo, samplearg))
525 usage();
526
527 #ifdef C_PROGRESSIVE_SUPPORTED
528 if (simple_progressive) /* process -progressive; -scans can override */
529 jpeg_simple_progression(cinfo);
530 #endif
531
532 #ifdef C_MULTISCAN_FILES_SUPPORTED
533 if (scansarg != NULL) /* process -scans if it was present */
534 if (!read_scan_script(cinfo, scansarg))
535 usage();
536 #endif
537 }
538
539 return argn; /* return index of next arg (file name) */
540 }
541
542
543 /*
544 * The main program.
545 */
546
547 int
main(int argc,char ** argv)548 main(int argc, char **argv)
549 {
550 struct jpeg_compress_struct cinfo;
551 #ifdef CJPEG_FUZZER
552 struct my_error_mgr myerr;
553 struct jpeg_error_mgr &jerr = myerr.pub;
554 #else
555 struct jpeg_error_mgr jerr;
556 #endif
557 struct cdjpeg_progress_mgr progress;
558 int file_index;
559 cjpeg_source_ptr src_mgr;
560 FILE *input_file = NULL;
561 FILE *icc_file;
562 JOCTET *icc_profile = NULL;
563 long icc_len = 0;
564 FILE *output_file = NULL;
565 unsigned char *outbuffer = NULL;
566 unsigned long outsize = 0;
567 JDIMENSION num_scanlines;
568
569 /* On Mac, fetch a command line. */
570 #ifdef USE_CCOMMAND
571 argc = ccommand(&argv);
572 #endif
573
574 progname = argv[0];
575 if (progname == NULL || progname[0] == 0)
576 progname = "cjpeg"; /* in case C library doesn't provide it */
577
578 /* Initialize the JPEG compression object with default error handling. */
579 cinfo.err = jpeg_std_error(&jerr);
580 jpeg_create_compress(&cinfo);
581 /* Add some application-specific error messages (from cderror.h) */
582 jerr.addon_message_table = cdjpeg_message_table;
583 jerr.first_addon_message = JMSG_FIRSTADDONCODE;
584 jerr.last_addon_message = JMSG_LASTADDONCODE;
585
586 /* Initialize JPEG parameters.
587 * Much of this may be overridden later.
588 * In particular, we don't yet know the input file's color space,
589 * but we need to provide some value for jpeg_set_defaults() to work.
590 */
591
592 cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
593 jpeg_set_defaults(&cinfo);
594
595 /* Scan command line to find file names.
596 * It is convenient to use just one switch-parsing routine, but the switch
597 * values read here are ignored; we will rescan the switches after opening
598 * the input file.
599 */
600
601 file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
602
603 #ifdef TWO_FILE_COMMANDLINE
604 if (!memdst) {
605 /* Must have either -outfile switch or explicit output file name */
606 if (outfilename == NULL) {
607 if (file_index != argc - 2) {
608 fprintf(stderr, "%s: must name one input and one output file\n",
609 progname);
610 usage();
611 }
612 outfilename = argv[file_index + 1];
613 } else {
614 if (file_index != argc - 1) {
615 fprintf(stderr, "%s: must name one input and one output file\n",
616 progname);
617 usage();
618 }
619 }
620 }
621 #else
622 /* Unix style: expect zero or one file name */
623 if (file_index < argc - 1) {
624 fprintf(stderr, "%s: only one input file\n", progname);
625 usage();
626 }
627 #endif /* TWO_FILE_COMMANDLINE */
628
629 /* Open the input file. */
630 if (file_index < argc) {
631 if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
632 fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
633 exit(EXIT_FAILURE);
634 }
635 } else {
636 /* default input file is stdin */
637 input_file = read_stdin();
638 }
639
640 /* Open the output file. */
641 if (outfilename != NULL) {
642 if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
643 fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
644 exit(EXIT_FAILURE);
645 }
646 } else if (!memdst) {
647 /* default output file is stdout */
648 output_file = write_stdout();
649 }
650
651 if (icc_filename != NULL) {
652 if ((icc_file = fopen(icc_filename, READ_BINARY)) == NULL) {
653 fprintf(stderr, "%s: can't open %s\n", progname, icc_filename);
654 exit(EXIT_FAILURE);
655 }
656 if (fseek(icc_file, 0, SEEK_END) < 0 ||
657 (icc_len = ftell(icc_file)) < 1 ||
658 fseek(icc_file, 0, SEEK_SET) < 0) {
659 fprintf(stderr, "%s: can't determine size of %s\n", progname,
660 icc_filename);
661 exit(EXIT_FAILURE);
662 }
663 if ((icc_profile = (JOCTET *)malloc(icc_len)) == NULL) {
664 fprintf(stderr, "%s: can't allocate memory for ICC profile\n", progname);
665 fclose(icc_file);
666 exit(EXIT_FAILURE);
667 }
668 if (fread(icc_profile, icc_len, 1, icc_file) < 1) {
669 fprintf(stderr, "%s: can't read ICC profile from %s\n", progname,
670 icc_filename);
671 free(icc_profile);
672 fclose(icc_file);
673 exit(EXIT_FAILURE);
674 }
675 fclose(icc_file);
676 }
677
678 #ifdef CJPEG_FUZZER
679 jerr.error_exit = my_error_exit;
680 jerr.emit_message = my_emit_message;
681 if (setjmp(myerr.setjmp_buffer))
682 HANDLE_ERROR()
683 #endif
684
685 if (report) {
686 start_progress_monitor((j_common_ptr)&cinfo, &progress);
687 progress.report = report;
688 }
689
690 /* Figure out the input file format, and set up to read it. */
691 src_mgr = select_file_type(&cinfo, input_file);
692 src_mgr->input_file = input_file;
693 #ifdef CJPEG_FUZZER
694 src_mgr->max_pixels = 1048576;
695 #endif
696
697 /* Read the input file header to obtain file size & colorspace. */
698 (*src_mgr->start_input) (&cinfo, src_mgr);
699
700 /* Now that we know input colorspace, fix colorspace-dependent defaults */
701 jpeg_default_colorspace(&cinfo);
702
703 /* Adjust default compression parameters by re-parsing the options */
704 file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
705
706 /* Specify data destination for compression */
707 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
708 if (memdst)
709 jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
710 else
711 #endif
712 jpeg_stdio_dest(&cinfo, output_file);
713
714 #ifdef CJPEG_FUZZER
715 if (setjmp(myerr.setjmp_buffer))
716 HANDLE_ERROR()
717 #endif
718
719 /* Start compressor */
720 jpeg_start_compress(&cinfo, TRUE);
721
722 if (icc_profile != NULL)
723 jpeg_write_icc_profile(&cinfo, icc_profile, (unsigned int)icc_len);
724
725 /* Process data */
726 while (cinfo.next_scanline < cinfo.image_height) {
727 num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
728 (void)jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
729 }
730
731 /* Finish compression and release memory */
732 (*src_mgr->finish_input) (&cinfo, src_mgr);
733 jpeg_finish_compress(&cinfo);
734 jpeg_destroy_compress(&cinfo);
735
736 /* Close files, if we opened them */
737 if (input_file != stdin)
738 fclose(input_file);
739 if (output_file != stdout && output_file != NULL)
740 fclose(output_file);
741
742 if (report)
743 end_progress_monitor((j_common_ptr)&cinfo);
744
745 if (memdst) {
746 #ifndef CJPEG_FUZZER
747 fprintf(stderr, "Compressed size: %lu bytes\n", outsize);
748 #endif
749 free(outbuffer);
750 }
751
752 free(icc_profile);
753
754 /* All done. */
755 return (jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
756 }
757