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Michael R Sweet 2023-11-15 08:38:47 -05:00
parent efe7c01015
commit ddd984215a
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3 changed files with 17 additions and 4 deletions
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4
pdfio-common.c
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@ -375,9 +375,9 @@ _pdfioFileSeek(pdfio_file_t *pdf, // I - PDF file
if (whence != SEEK_END && offset >= pdf->bufpos && offset < (pdf->bufpos + pdf->bufend - pdf->buffer)) if (whence != SEEK_END && offset >= pdf->bufpos && offset < (pdf->bufpos + pdf->bufend - pdf->buffer))
{ {
// Yes, seek within existing buffer... // Yes, seek within existing buffer...
pdf->bufptr = pdf->buffer + offset - pdf->bufpos; pdf->bufptr = pdf->buffer + (offset - pdf->bufpos);
PDFIO_DEBUG("_pdfioFileSeek: Seek within buffer, bufpos=%ld.\n", (long)pdf->bufpos); PDFIO_DEBUG("_pdfioFileSeek: Seek within buffer, bufpos=%ld.\n", (long)pdf->bufpos);
PDFIO_DEBUG("_pdfioFileSeek: buffer=%p, bufptr=%p, bufend=%p\n", pdf->buffer, pdf->bufptr, pdf->bufend); PDFIO_DEBUG("_pdfioFileSeek: buffer=%p, bufptr=%p(<%02X%02X...>), bufend=%p\n", pdf->buffer, pdf->bufptr, pdf->bufptr[0] & 255, pdf->bufptr[1] & 255, pdf->bufend);
return (offset); return (offset);
} }

15
pdfio-file.c
View File

@ -1514,6 +1514,7 @@ load_obj_stream(pdfio_obj_t *obj) // I - Object to load
// Skip offset // Skip offset
_pdfioTokenGet(&tb, buffer, sizeof(buffer)); _pdfioTokenGet(&tb, buffer, sizeof(buffer));
PDFIO_DEBUG("load_obj_stream: %ld at offset %s\n", (long)number, buffer);
} }
if (!buffer[0]) if (!buffer[0])
@ -1865,8 +1866,18 @@ load_xref(
break; break;
} }
if (i >= num_sobjs && num_sobjs < (sizeof(sobjs) / sizeof(sobjs[0]))) if (i >= num_sobjs)
sobjs[num_sobjs ++] = (size_t)offset; {
if (num_sobjs < (sizeof(sobjs) / sizeof(sobjs[0])))
{
sobjs[num_sobjs ++] = (size_t)offset;
}
else
{
_pdfioFileError(pdf, "Too many object streams.");
return (false);
}
}
} }
else if (!current) else if (!current)
{ {

2
pdfio-stream.c
View File

@ -452,6 +452,7 @@ _pdfioStreamOpen(pdfio_obj_t *obj, // I - Object
return (NULL); return (NULL);
} }
PDFIO_DEBUG("_pdfioStreamOpen: ivlen=%d\n", (int)ivlen);
if (ivlen > 0) if (ivlen > 0)
_pdfioFileConsume(st->pdf, ivlen); _pdfioFileConsume(st->pdf, ivlen);
@ -567,6 +568,7 @@ _pdfioStreamOpen(pdfio_obj_t *obj, // I - Object
else else
st->predictor = _PDFIO_PREDICTOR_NONE; st->predictor = _PDFIO_PREDICTOR_NONE;
PDFIO_DEBUG("_pdfioStreamOpen: pos=%ld\n", (long)_pdfioFileTell(st->pdf));
if (sizeof(st->cbuffer) > st->remaining) if (sizeof(st->cbuffer) > st->remaining)
rbytes = _pdfioFileRead(st->pdf, st->cbuffer, st->remaining); rbytes = _pdfioFileRead(st->pdf, st->cbuffer, st->remaining);
else else