diff options
Diffstat (limited to 'converter/other/pdbimgtopam.c')
| -rw-r--r-- | converter/other/pdbimgtopam.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/converter/other/pdbimgtopam.c b/converter/other/pdbimgtopam.c index 3cb4129a..67044109 100644 --- a/converter/other/pdbimgtopam.c +++ b/converter/other/pdbimgtopam.c @@ -97,6 +97,8 @@ parseCommandLine(int argc, const char ** argv, cmdlineP->inputFileName = argv[1]; else pm_error("Program takes at most one argument: input file name"); + + free(option_def); } @@ -211,7 +213,8 @@ readCompressed(IMAGE * const imgP, if (end_offset == UNKNOWN_OFFSET) { /* - * Read until EOF. Some of them have an extra zero byte + * Read sufficient amount for worst-case compressed image, + * or until EOF. Some of them have an extra zero byte * dangling off the end. I originally thought this was * an empty note record (even though there was no record * header for it); however, the release notes for Image @@ -221,12 +224,20 @@ readCompressed(IMAGE * const imgP, * this extra byte and ignore it by paying attention to * the image dimensions. */ - MALLOCARRAY(buffer, ipdb_img_size(imgP)); + size_t const maxCompressedSizeWithBloat = ipdb_img_size(imgP) * 2; + /* + * Provide a buffer large enough for the worst case. + * See note in lib/util/runlength.c . + * We do not use pm_rlenc_allocoutbuf() because there is no + * guarantee that the encoder that produced the image was + * efficient. + */ + MALLOCARRAY(buffer, maxCompressedSizeWithBloat); if (buffer == NULL) retval = ENOMEM; else { - dataSize = fread(buffer, 1, ipdb_img_size(imgP), fP); + dataSize = fread(buffer, 1, maxCompressedSizeWithBloat, fP); if (dataSize <= 0) retval = EIO; else @@ -307,6 +318,8 @@ imageReadData(FILE * const fileP, IMAGE * const imgP, uint32_t const end_offset) { + size_t const imageSize = ipdb_img_size(imgP); + int retval; size_t dataSize; uint8_t * buffer; @@ -318,14 +331,24 @@ imageReadData(FILE * const fileP, * Compressed data can cross row boundaries so we decompress * the data here to avoid messiness in the row access functions. */ - if (dataSize != ipdb_img_size(imgP)) { - decompress(buffer, dataSize, ipdb_img_size(imgP), &imgP->data); + if (dataSize < imageSize || imgP->version == 1) { + if (imgP->version == 0) + pm_message("Image header says raster data is uncompressed. " + "Encountered only %u instead of the " + "required %u bytes. Assuming compressed mode.", + (unsigned)dataSize, (unsigned)imageSize); + decompress(buffer, dataSize, imageSize, &imgP->data); if (imgP->data == NULL) retval = ENOMEM; else imgP->compressed = true; free(buffer); } else { + if (dataSize > imageSize) + pm_message("Image header says raster data is uncompressed. " + "Encountered %u instead of the required %u bytes. " + "Assuming uncompressed mode.", + (unsigned)dataSize, (unsigned)imageSize); imgP->compressed = false; imgP->data = buffer; /* Storage at 'buffer' now belongs to *imgP */ |