kc3-lang/libjpeg-turbo/src/cjpeg.c

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• Hash : 66771223
  Author :
  Date : 2025-05-13T10:33:15
  

  cjpeg: Free ICC profile if API error when fuzzing
  
  Fixes #809
  

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• src/cjpeg.c

• /*
   * cjpeg.c
   *
   * This file was part of the Independent JPEG Group's software:
   * Copyright (C) 1991-1998, Thomas G. Lane.
   * Modified 2003-2011 by Guido Vollbeding.
   * Lossless JPEG Modifications:
   * Copyright (C) 1999, Ken Murchison.
   * libjpeg-turbo Modifications:
   * Copyright (C) 2010, 2013-2014, 2017, 2019-2022, 2024-2025,
   *           D. R. Commander.
   * For conditions of distribution and use, see the accompanying README.ijg
   * file.
   *
   * This file contains a command-line user interface for the JPEG compressor.
   * It should work on any system with Unix- or MS-DOS-style command lines.
   *
   * Two different command line styles are permitted, depending on the
   * compile-time switch TWO_FILE_COMMANDLINE:
   *      cjpeg [options]  inputfile outputfile
   *      cjpeg [options]  [inputfile]
   * In the second style, output is always to standard output, which you'd
   * normally redirect to a file or pipe to some other program.  Input is
   * either from a named file or from standard input (typically redirected).
   * The second style is convenient on Unix but is unhelpful on systems that
   * don't support pipes.  Also, you MUST use the first style if your system
   * doesn't do binary I/O to stdin/stdout.
   * To simplify script writing, the "-outfile" switch is provided.  The syntax
   *      cjpeg [options]  -outfile outputfile  inputfile
   * works regardless of which command line style is used.
   */
  
  #ifdef _MSC_VER
  #define _CRT_SECURE_NO_DEPRECATE
  #endif
  
  #ifdef CJPEG_FUZZER
  #define JPEG_INTERNALS
  #endif
  #include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
  #include "jversion.h"           /* for version message */
  #include "jconfigint.h"
  
  
  /* Create the add-on message string table. */
  
  #define JMESSAGE(code, string)  string,
  
  static const char * const cdjpeg_message_table[] = {
  #include "cderror.h"
    NULL
  };
  
  
  /*
   * This routine determines what format the input file is,
   * and selects the appropriate input-reading module.
   *
   * To determine which family of input formats the file belongs to,
   * we may look only at the first byte of the file, since C does not
   * guarantee that more than one character can be pushed back with ungetc.
   * Looking at additional bytes would require one of these approaches:
   *     1) assume we can fseek() the input file (fails for piped input);
   *     2) assume we can push back more than one character (works in
   *        some C implementations, but unportable);
   *     3) provide our own buffering (breaks input readers that want to use
   *        stdio directly);
   * or  4) don't put back the data, and modify the input_init methods to assume
   *        they start reading after the start of file.
   * #1 is attractive for MS-DOS but is untenable on Unix.
   *
   * The most portable solution for file types that can't be identified by their
   * first byte is to make the user tell us what they are.  This is also the
   * only approach for "raw" file types that contain only arbitrary values.
   * We presently apply this method for Targa files.  Most of the time Targa
   * files start with 0x00, so we recognize that case.  Potentially, however,
   * a Targa file could start with any byte value (byte 0 is the length of the
   * seldom-used ID field), so we provide a switch to force Targa input mode.
   */
  
  static boolean is_targa;        /* records user -targa switch */
  
  
  LOCAL(cjpeg_source_ptr)
  select_file_type(j_compress_ptr cinfo, FILE *infile)
  {
    int c;
  
    if (is_targa) {
  #ifdef TARGA_SUPPORTED
      return jinit_read_targa(cinfo);
  #else
      ERREXIT(cinfo, JERR_TGA_NOTCOMP);
  #endif
    }
  
    if ((c = getc(infile)) == EOF)
      ERREXIT(cinfo, JERR_INPUT_EMPTY);
    if (ungetc(c, infile) == EOF)
      ERREXIT(cinfo, JERR_UNGETC_FAILED);
  
    switch (c) {
  #ifdef BMP_SUPPORTED
    case 'B':
      return jinit_read_bmp(cinfo, TRUE);
  #endif
  #ifdef GIF_SUPPORTED
    case 'G':
      return jinit_read_gif(cinfo);
  #endif
  #ifdef PPM_SUPPORTED
    case 'P':
      if (cinfo->data_precision <= 8)
        return jinit_read_ppm(cinfo);
      else if (cinfo->data_precision <= 12)
        return j12init_read_ppm(cinfo);
      else {
  #ifdef C_LOSSLESS_SUPPORTED
        return j16init_read_ppm(cinfo);
  #else
        ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
        break;
  #endif
      }
  #endif
  #ifdef TARGA_SUPPORTED
    case 0x00:
      return jinit_read_targa(cinfo);
  #endif
    default:
      ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
      break;
    }
  
    return NULL;                  /* suppress compiler warnings */
  }
  
  
  /*
   * Argument-parsing code.
   * The switch parser is designed to be useful with DOS-style command line
   * syntax, ie, intermixed switches and file names, where only the switches
   * to the left of a given file name affect processing of that file.
   * The main program in this file doesn't actually use this capability...
   */
  
  
  static const char *progname;    /* program name for error messages */
  static char *icc_filename;      /* for -icc switch */
  static char *outfilename;       /* for -outfile switch */
  static boolean memdst;          /* for -memdst switch */
  static boolean report;          /* for -report switch */
  static boolean strict;          /* for -strict switch */
  
  
  #ifdef CJPEG_FUZZER
  
  #include <setjmp.h>
  
  struct my_error_mgr {
    struct jpeg_error_mgr pub;
    jmp_buf setjmp_buffer;
  };
  
  void my_error_exit(j_common_ptr cinfo)
  {
    struct my_error_mgr *myerr = (struct my_error_mgr *)cinfo->err;
  
    longjmp(myerr->setjmp_buffer, 1);
  }
  
  static void my_emit_message_fuzzer(j_common_ptr cinfo, int msg_level)
  {
    if (msg_level < 0)
      cinfo->err->num_warnings++;
  }
  
  #define HANDLE_ERROR() { \
    if (cinfo.global_state > CSTATE_START) { \
      if (memdst && outbuffer) \
        (*cinfo.dest->term_destination) (&cinfo); \
      jpeg_abort_compress(&cinfo); \
    } \
    jpeg_destroy_compress(&cinfo); \
    if (input_file != stdin && input_file != NULL) \
      fclose(input_file); \
    if (memdst) \
      free(outbuffer); \
    free(icc_profile); \
    return EXIT_FAILURE; \
  }
  
  #endif
  
  
  LOCAL(void)
  usage(void)
  /* complain about bad command line */
  {
    fprintf(stderr, "usage: %s [switches] ", progname);
  #ifdef TWO_FILE_COMMANDLINE
    fprintf(stderr, "inputfile outputfile\n");
  #else
    fprintf(stderr, "[inputfile]\n");
  #endif
  
    fprintf(stderr, "Switches (names may be abbreviated):\n");
    fprintf(stderr, "  -quality N[,...]   Compression quality (0..100; 5-95 is most useful range,\n");
    fprintf(stderr, "                     default is 75)\n");
    fprintf(stderr, "  -grayscale     Create monochrome JPEG file\n");
    fprintf(stderr, "  -rgb           Create RGB JPEG file\n");
  #ifdef ENTROPY_OPT_SUPPORTED
    fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression)\n");
  #endif
  #ifdef C_PROGRESSIVE_SUPPORTED
    fprintf(stderr, "  -progressive   Create progressive JPEG file\n");
  #endif
  #ifdef TARGA_SUPPORTED
    fprintf(stderr, "  -targa         Input file is Targa format (usually not needed)\n");
  #endif
    fprintf(stderr, "Switches for advanced users:\n");
    fprintf(stderr, "  -precision N   Create JPEG file with N-bit data precision\n");
  #ifdef C_LOSSLESS_SUPPORTED
    fprintf(stderr, "                 (N=2..16; default is 8; if N is not 8 or 12, then -lossless\n");
    fprintf(stderr, "                 must also be specified)\n");
  #else
    fprintf(stderr, "                 (N is 8 or 12; default is 8)\n");
  #endif
  #ifdef C_LOSSLESS_SUPPORTED
    fprintf(stderr, "  -lossless psv[,Pt]  Create lossless JPEG file\n");
  #endif
  #ifdef C_ARITH_CODING_SUPPORTED
    fprintf(stderr, "  -arithmetic    Use arithmetic coding\n");
  #endif
  #ifdef DCT_ISLOW_SUPPORTED
    fprintf(stderr, "  -dct int       Use accurate integer DCT method%s\n",
            (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
  #endif
  #ifdef DCT_IFAST_SUPPORTED
    fprintf(stderr, "  -dct fast      Use less accurate integer DCT method [legacy feature]%s\n",
            (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
  #endif
  #ifdef DCT_FLOAT_SUPPORTED
    fprintf(stderr, "  -dct float     Use floating-point DCT method [legacy feature]%s\n",
            (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
  #endif
    fprintf(stderr, "  -icc FILE      Embed ICC profile contained in FILE\n");
    fprintf(stderr, "  -restart N     Set restart interval in rows, or in blocks with B\n");
  #ifdef INPUT_SMOOTHING_SUPPORTED
    fprintf(stderr, "  -smooth N      Smooth dithered input (N=1..100 is strength)\n");
  #endif
    fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
    fprintf(stderr, "  -outfile name  Specify name for output file\n");
    fprintf(stderr, "  -memdst        Compress to memory instead of file (useful for benchmarking)\n");
    fprintf(stderr, "  -report        Report compression progress\n");
    fprintf(stderr, "  -strict        Treat all warnings as fatal\n");
    fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
    fprintf(stderr, "  -version       Print version information and exit\n");
    fprintf(stderr, "Switches for wizards:\n");
    fprintf(stderr, "  -baseline      Force baseline quantization tables\n");
    fprintf(stderr, "  -qtables FILE  Use quantization tables given in FILE\n");
    fprintf(stderr, "  -qslots N[,...]    Set component quantization tables\n");
    fprintf(stderr, "  -sample HxV[,...]  Set component sampling factors\n");
  #ifdef C_MULTISCAN_FILES_SUPPORTED
    fprintf(stderr, "  -scans FILE    Create multi-scan JPEG per script FILE\n");
  #endif
    exit(EXIT_FAILURE);
  }
  
  
  LOCAL(int)
  parse_switches(j_compress_ptr cinfo, int argc, char **argv,
                 int last_file_arg_seen, boolean for_real)
  /* Parse optional switches.
   * Returns argv[] index of first file-name argument (== argc if none).
   * Any file names with indexes <= last_file_arg_seen are ignored;
   * they have presumably been processed in a previous iteration.
   * (Pass 0 for last_file_arg_seen on the first or only iteration.)
   * for_real is FALSE on the first (dummy) pass; we may skip any expensive
   * processing.
   */
  {
    int argn;
    char *arg;
  #ifdef C_LOSSLESS_SUPPORTED
    int psv = 0, pt = 0;
  #endif
    boolean force_baseline;
    boolean simple_progressive;
    char *qualityarg = NULL;      /* saves -quality parm if any */
    char *qtablefile = NULL;      /* saves -qtables filename if any */
    char *qslotsarg = NULL;       /* saves -qslots parm if any */
    char *samplearg = NULL;       /* saves -sample parm if any */
    char *scansarg = NULL;        /* saves -scans parm if any */
  
    /* Set up default JPEG parameters. */
  
    force_baseline = FALSE;       /* by default, allow 16-bit quantizers */
    simple_progressive = FALSE;
    is_targa = FALSE;
    icc_filename = NULL;
    outfilename = NULL;
    memdst = FALSE;
    report = FALSE;
    strict = FALSE;
    cinfo->err->trace_level = 0;
  
    /* Scan command line options, adjust parameters */
  
    for (argn = 1; argn < argc; argn++) {
      arg = argv[argn];
      if (*arg != '-') {
        /* Not a switch, must be a file name argument */
        if (argn <= last_file_arg_seen) {
          outfilename = NULL;     /* -outfile applies to just one input file */
          continue;               /* ignore this name if previously processed */
        }
        break;                    /* else done parsing switches */
      }
      arg++;                      /* advance past switch marker character */
  
      if (keymatch(arg, "arithmetic", 1)) {
        /* Use arithmetic coding. */
  #ifdef C_ARITH_CODING_SUPPORTED
        cinfo->arith_code = TRUE;
  #else
        fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
                progname);
        exit(EXIT_FAILURE);
  #endif
  
      } else if (keymatch(arg, "baseline", 1)) {
        /* Force baseline-compatible output (8-bit quantizer values). */
        force_baseline = TRUE;
  
      } else if (keymatch(arg, "dct", 2)) {
        /* Select DCT algorithm. */
        if (++argn >= argc)       /* advance to next argument */
          usage();
        if (keymatch(argv[argn], "int", 1)) {
          cinfo->dct_method = JDCT_ISLOW;
        } else if (keymatch(argv[argn], "fast", 2)) {
          cinfo->dct_method = JDCT_IFAST;
        } else if (keymatch(argv[argn], "float", 2)) {
          cinfo->dct_method = JDCT_FLOAT;
        } else
          usage();
  
      } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
        /* Enable debug printouts. */
        /* On first -d, print version identification */
        static boolean printed_version = FALSE;
  
        if (!printed_version) {
          fprintf(stderr, "%s version %s (build %s)\n",
                  PACKAGE_NAME, VERSION, BUILD);
          fprintf(stderr, JCOPYRIGHT1);
          fprintf(stderr, JCOPYRIGHT2 "\n");
          fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
                  JVERSION);
          printed_version = TRUE;
        }
        cinfo->err->trace_level++;
  
      } else if (keymatch(arg, "version", 4)) {
        fprintf(stderr, "%s version %s (build %s)\n",
                PACKAGE_NAME, VERSION, BUILD);
        exit(EXIT_SUCCESS);
  
      } else if (keymatch(arg, "grayscale", 2) ||
                 keymatch(arg, "greyscale", 2)) {
        /* Force a monochrome JPEG file to be generated. */
        jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
  
      } else if (keymatch(arg, "rgb", 3)) {
        /* Force an RGB JPEG file to be generated. */
        jpeg_set_colorspace(cinfo, JCS_RGB);
  
      } else if (keymatch(arg, "icc", 1)) {
        /* Set ICC filename. */
        if (++argn >= argc)       /* advance to next argument */
          usage();
        icc_filename = argv[argn];
  
      } else if (keymatch(arg, "lossless", 1)) {
        /* Enable lossless mode. */
  #ifdef C_LOSSLESS_SUPPORTED
        char ch = ',', *ptr;
  
        if (++argn >= argc)       /* advance to next argument */
          usage();
        if (sscanf(argv[argn], "%d%c", &psv, &ch) < 1 || ch != ',')
          usage();
        ptr = argv[argn];
        while (*ptr && *ptr++ != ','); /* advance to next segment of arg
                                          string */
        if (*ptr)
          sscanf(ptr, "%d", &pt);
  
        /* We must postpone execution until data_precision is known. */
  #else
        fprintf(stderr, "%s: sorry, lossless output was not compiled\n",
                progname);
        exit(EXIT_FAILURE);
  #endif
  
      } else if (keymatch(arg, "maxmemory", 3)) {
        /* Maximum memory in Kb (or Mb with 'm'). */
        long lval;
        char ch = 'x';
  
        if (++argn >= argc)       /* advance to next argument */
          usage();
        if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
          usage();
        if (ch == 'm' || ch == 'M')
          lval *= 1000L;
        cinfo->mem->max_memory_to_use = lval * 1000L;
  
      } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
        /* Enable entropy parm optimization. */
  #ifdef ENTROPY_OPT_SUPPORTED
        cinfo->optimize_coding = TRUE;
  #else
        fprintf(stderr, "%s: sorry, entropy optimization was not compiled in\n",
                progname);
        exit(EXIT_FAILURE);
  #endif
  
      } else if (keymatch(arg, "outfile", 4)) {
        /* Set output file name. */
        if (++argn >= argc)       /* advance to next argument */
          usage();
        outfilename = argv[argn]; /* save it away for later use */
  
      } else if (keymatch(arg, "precision", 3)) {
        /* Set data precision. */
        int val;
  
        if (++argn >= argc)       /* advance to next argument */
          usage();
        if (sscanf(argv[argn], "%d", &val) != 1)
          usage();
  #ifdef C_LOSSLESS_SUPPORTED
        if (val < 2 || val > 16)
  #else
        if (val != 8 && val != 12)
  #endif
          usage();
        cinfo->data_precision = val;
  
      } else if (keymatch(arg, "progressive", 1)) {
        /* Select simple progressive mode. */
  #ifdef C_PROGRESSIVE_SUPPORTED
        simple_progressive = TRUE;
        /* We must postpone execution until num_components is known. */
  #else
        fprintf(stderr, "%s: sorry, progressive output was not compiled in\n",
                progname);
        exit(EXIT_FAILURE);
  #endif
  
      } else if (keymatch(arg, "memdst", 2)) {
        /* Use in-memory destination manager */
        memdst = TRUE;
  
      } else if (keymatch(arg, "quality", 1)) {
        /* Quality ratings (quantization table scaling factors). */
        if (++argn >= argc)       /* advance to next argument */
          usage();
        qualityarg = argv[argn];
  
      } else if (keymatch(arg, "qslots", 2)) {
        /* Quantization table slot numbers. */
        if (++argn >= argc)       /* advance to next argument */
          usage();
        qslotsarg = argv[argn];
        /* Must delay setting qslots until after we have processed any
         * colorspace-determining switches, since jpeg_set_colorspace sets
         * default quant table numbers.
         */
  
      } else if (keymatch(arg, "qtables", 2)) {
        /* Quantization tables fetched from file. */
        if (++argn >= argc)       /* advance to next argument */
          usage();
        qtablefile = argv[argn];
        /* We postpone actually reading the file in case -quality comes later. */
  
      } else if (keymatch(arg, "report", 3)) {
        report = TRUE;
  
      } else if (keymatch(arg, "restart", 1)) {
        /* Restart interval in MCU rows (or in MCUs with 'b'). */
        long lval;
        char ch = 'x';
  
        if (++argn >= argc)       /* advance to next argument */
          usage();
        if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
          usage();
        if (lval < 0 || lval > 65535L)
          usage();
        if (ch == 'b' || ch == 'B') {
          cinfo->restart_interval = (unsigned int)lval;
          cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
        } else {
          cinfo->restart_in_rows = (int)lval;
          /* restart_interval will be computed during startup */
        }
  
      } else if (keymatch(arg, "sample", 2)) {
        /* Set sampling factors. */
        if (++argn >= argc)       /* advance to next argument */
          usage();
        samplearg = argv[argn];
        /* Must delay setting sample factors until after we have processed any
         * colorspace-determining switches, since jpeg_set_colorspace sets
         * default sampling factors.
         */
  
      } else if (keymatch(arg, "scans", 2)) {
        /* Set scan script. */
  #ifdef C_MULTISCAN_FILES_SUPPORTED
        if (++argn >= argc)       /* advance to next argument */
          usage();
        scansarg = argv[argn];
        /* We must postpone reading the file in case -progressive appears. */
  #else
        fprintf(stderr, "%s: sorry, multi-scan output was not compiled in\n",
                progname);
        exit(EXIT_FAILURE);
  #endif
  
      } else if (keymatch(arg, "smooth", 2)) {
        /* Set input smoothing factor. */
        int val;
  
        if (++argn >= argc)       /* advance to next argument */
          usage();
        if (sscanf(argv[argn], "%d", &val) != 1)
          usage();
        if (val < 0 || val > 100)
          usage();
        cinfo->smoothing_factor = val;
  
      } else if (keymatch(arg, "strict", 2)) {
        strict = TRUE;
  
      } else if (keymatch(arg, "targa", 1)) {
        /* Input file is Targa format. */
        is_targa = TRUE;
  
      } else {
        usage();                  /* bogus switch */
      }
    }
  
    /* Post-switch-scanning cleanup */
  
    if (for_real) {
  
      /* Set quantization tables for selected quality. */
      /* Some or all may be overridden if -qtables is present. */
      if (qualityarg != NULL)     /* process -quality if it was present */
        if (!set_quality_ratings(cinfo, qualityarg, force_baseline))
          usage();
  
      if (qtablefile != NULL)     /* process -qtables if it was present */
        if (!read_quant_tables(cinfo, qtablefile, force_baseline))
          usage();
  
      if (qslotsarg != NULL)      /* process -qslots if it was present */
        if (!set_quant_slots(cinfo, qslotsarg))
          usage();
  
      if (samplearg != NULL)      /* process -sample if it was present */
        if (!set_sample_factors(cinfo, samplearg))
          usage();
  
  #ifdef C_PROGRESSIVE_SUPPORTED
      if (simple_progressive)     /* process -progressive; -scans can override */
        jpeg_simple_progression(cinfo);
  #endif
  
  #ifdef C_LOSSLESS_SUPPORTED
      if (psv != 0)               /* process -lossless */
        jpeg_enable_lossless(cinfo, psv, pt);
  #endif
  
  #ifdef C_MULTISCAN_FILES_SUPPORTED
      if (scansarg != NULL)       /* process -scans if it was present */
        if (!read_scan_script(cinfo, scansarg))
          usage();
  #endif
    }
  
    return argn;                  /* return index of next arg (file name) */
  }
  
  
  METHODDEF(void)
  my_emit_message(j_common_ptr cinfo, int msg_level)
  {
    if (msg_level < 0) {
      /* Treat warning as fatal */
      cinfo->err->error_exit(cinfo);
    } else {
      if (cinfo->err->trace_level >= msg_level)
        cinfo->err->output_message(cinfo);
    }
  }
  
  
  /*
   * The main program.
   */
  
  int
  main(int argc, char **argv)
  {
    struct jpeg_compress_struct cinfo;
  #ifdef CJPEG_FUZZER
    struct my_error_mgr myerr;
    struct jpeg_error_mgr &jerr = myerr.pub;
  #else
    struct jpeg_error_mgr jerr;
  #endif
    struct cdjpeg_progress_mgr progress;
    int file_index;
    cjpeg_source_ptr src_mgr;
    FILE *input_file = NULL;
    FILE *icc_file;
    JOCTET *icc_profile = NULL;
    long icc_len = 0;
    FILE *output_file = NULL;
    unsigned char *outbuffer = NULL;
    unsigned long outsize = 0;
    JDIMENSION num_scanlines;
  
    progname = argv[0];
    if (progname == NULL || progname[0] == 0)
      progname = "cjpeg";         /* in case C library doesn't provide it */
  
    /* Initialize the JPEG compression object with default error handling. */
    cinfo.err = jpeg_std_error(&jerr);
    jpeg_create_compress(&cinfo);
    /* Add some application-specific error messages (from cderror.h) */
    jerr.addon_message_table = cdjpeg_message_table;
    jerr.first_addon_message = JMSG_FIRSTADDONCODE;
    jerr.last_addon_message = JMSG_LASTADDONCODE;
  
    /* Initialize JPEG parameters.
     * Much of this may be overridden later.
     * In particular, we don't yet know the input file's color space,
     * but we need to provide some value for jpeg_set_defaults() to work.
     */
  
    cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
    jpeg_set_defaults(&cinfo);
  
    /* Scan command line to find file names.
     * It is convenient to use just one switch-parsing routine, but the switch
     * values read here are ignored; we will rescan the switches after opening
     * the input file.
     */
  
    file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
  
    if (strict)
      jerr.emit_message = my_emit_message;
  
  #ifdef TWO_FILE_COMMANDLINE
    if (!memdst) {
      /* Must have either -outfile switch or explicit output file name */
      if (outfilename == NULL) {
        if (file_index != argc - 2) {
          fprintf(stderr, "%s: must name one input and one output file\n",
                  progname);
          usage();
        }
        outfilename = argv[file_index + 1];
      } else {
        if (file_index != argc - 1) {
          fprintf(stderr, "%s: must name one input and one output file\n",
                  progname);
          usage();
        }
      }
    }
  #else
    /* Unix style: expect zero or one file name */
    if (file_index < argc - 1) {
      fprintf(stderr, "%s: only one input file\n", progname);
      usage();
    }
  #endif /* TWO_FILE_COMMANDLINE */
  
    /* Open the input file. */
    if (file_index < argc) {
      if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
        fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
        exit(EXIT_FAILURE);
      }
    } else {
      /* default input file is stdin */
      input_file = read_stdin();
    }
  
    /* Open the output file. */
    if (outfilename != NULL) {
      if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
        fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
        exit(EXIT_FAILURE);
      }
    } else if (!memdst) {
      /* default output file is stdout */
      output_file = write_stdout();
    }
  
    if (icc_filename != NULL) {
      if ((icc_file = fopen(icc_filename, READ_BINARY)) == NULL) {
        fprintf(stderr, "%s: can't open %s\n", progname, icc_filename);
        exit(EXIT_FAILURE);
      }
      if (fseek(icc_file, 0, SEEK_END) < 0 ||
          (icc_len = ftell(icc_file)) < 1 ||
          fseek(icc_file, 0, SEEK_SET) < 0) {
        fprintf(stderr, "%s: can't determine size of %s\n", progname,
                icc_filename);
        exit(EXIT_FAILURE);
      }
      if ((icc_profile = (JOCTET *)malloc(icc_len)) == NULL) {
        fprintf(stderr, "%s: can't allocate memory for ICC profile\n", progname);
        fclose(icc_file);
        exit(EXIT_FAILURE);
      }
      if (fread(icc_profile, icc_len, 1, icc_file) < 1) {
        fprintf(stderr, "%s: can't read ICC profile from %s\n", progname,
                icc_filename);
        free(icc_profile);
        fclose(icc_file);
        exit(EXIT_FAILURE);
      }
      fclose(icc_file);
    }
  
  #ifdef CJPEG_FUZZER
    jerr.error_exit = my_error_exit;
    jerr.emit_message = my_emit_message_fuzzer;
    if (setjmp(myerr.setjmp_buffer))
      HANDLE_ERROR()
  #endif
  
    if (report) {
      start_progress_monitor((j_common_ptr)&cinfo, &progress);
      progress.report = report;
    }
  
    /* Figure out the input file format, and set up to read it. */
    src_mgr = select_file_type(&cinfo, input_file);
    src_mgr->input_file = input_file;
  #ifdef CJPEG_FUZZER
    src_mgr->max_pixels = 1048576;
  #endif
  
    /* Read the input file header to obtain file size & colorspace. */
    (*src_mgr->start_input) (&cinfo, src_mgr);
  
    /* Now that we know input colorspace, fix colorspace-dependent defaults */
    jpeg_default_colorspace(&cinfo);
  
    /* Adjust default compression parameters by re-parsing the options */
    file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
  
    /* Specify data destination for compression */
    if (memdst)
      jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
    else
      jpeg_stdio_dest(&cinfo, output_file);
  
  #ifdef CJPEG_FUZZER
    if (setjmp(myerr.setjmp_buffer))
      HANDLE_ERROR()
  #endif
  
    /* Start compressor */
    jpeg_start_compress(&cinfo, TRUE);
  
    if (icc_profile != NULL)
      jpeg_write_icc_profile(&cinfo, icc_profile, (unsigned int)icc_len);
  
    /* Process data */
    if (cinfo.data_precision <= 8) {
      while (cinfo.next_scanline < cinfo.image_height) {
        num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
        (void)jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
      }
    } else if (cinfo.data_precision <= 12) {
      while (cinfo.next_scanline < cinfo.image_height) {
        num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
        (void)jpeg12_write_scanlines(&cinfo, src_mgr->buffer12, num_scanlines);
      }
    } else {
  #ifdef C_LOSSLESS_SUPPORTED
      while (cinfo.next_scanline < cinfo.image_height) {
        num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
        (void)jpeg16_write_scanlines(&cinfo, src_mgr->buffer16, num_scanlines);
      }
  #else
      ERREXIT1(&cinfo, JERR_BAD_PRECISION, cinfo.data_precision);
  #endif
    }
  
    /* Finish compression and release memory */
    (*src_mgr->finish_input) (&cinfo, src_mgr);
    jpeg_finish_compress(&cinfo);
    jpeg_destroy_compress(&cinfo);
  
    /* Close files, if we opened them */
    if (input_file != stdin)
      fclose(input_file);
    if (output_file != stdout && output_file != NULL)
      fclose(output_file);
  
    if (report)
      end_progress_monitor((j_common_ptr)&cinfo);
  
    if (memdst) {
  #ifndef CJPEG_FUZZER
      fprintf(stderr, "Compressed size:  %lu bytes\n", outsize);
  #endif
      free(outbuffer);
    }
  
    free(icc_profile);
  
    /* All done. */
    return (jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
  }
  

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