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Diffstat (limited to 'third_party/libtiff/tif_jpeg.c')
-rw-r--r--third_party/libtiff/tif_jpeg.c194
1 files changed, 175 insertions, 19 deletions
diff --git a/third_party/libtiff/tif_jpeg.c b/third_party/libtiff/tif_jpeg.c
index df06e03fab..19fa87a7e2 100644
--- a/third_party/libtiff/tif_jpeg.c
+++ b/third_party/libtiff/tif_jpeg.c
@@ -1,4 +1,4 @@
-/* $Id: tif_jpeg.c,v 1.127 2017-01-31 13:02:27 erouault Exp $ */
+/* $Id: tif_jpeg.c,v 1.134 2017-10-17 19:04:47 erouault Exp $ */
/*
* Copyright (c) 1994-1997 Sam Leffler
@@ -27,6 +27,8 @@
#define WIN32_LEAN_AND_MEAN
#define VC_EXTRALEAN
+#include <stdlib.h>
+
#include "tiffiop.h"
#ifdef JPEG_SUPPORT
@@ -47,6 +49,7 @@
int TIFFFillStrip(TIFF* tif, uint32 strip);
int TIFFFillTile(TIFF* tif, uint32 tile);
int TIFFReInitJPEG_12( TIFF *tif, int scheme, int is_encode );
+int TIFFJPEGIsFullStripRequired_12(TIFF* tif);
/* We undefine FAR to avoid conflict with JPEG definition */
@@ -153,6 +156,8 @@ typedef struct {
jpeg_error_mgr err; /* libjpeg error manager */
JMP_BUF exit_jmpbuf; /* for catching libjpeg failures */
+
+ struct jpeg_progress_mgr progress;
/*
* The following two members could be a union, but
* they're small enough that it's not worth the effort.
@@ -183,6 +188,7 @@ typedef struct {
int jpegtablesmode; /* What to put in JPEGTables */
int ycbcrsampling_fetched;
+ int max_allowed_scan_number;
} JPEGState;
#define JState(tif) ((JPEGState*)(tif)->tif_data)
@@ -243,6 +249,33 @@ TIFFjpeg_output_message(j_common_ptr cinfo)
TIFFWarningExt(((JPEGState *) cinfo)->tif->tif_clientdata, "JPEGLib", "%s", buffer);
}
+/* Avoid the risk of denial-of-service on crafted JPEGs with an insane */
+/* number of scans. */
+/* See http://www.libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf */
+static void
+TIFFjpeg_progress_monitor(j_common_ptr cinfo)
+{
+ JPEGState *sp = (JPEGState *) cinfo; /* NB: cinfo assumed first */
+ if (cinfo->is_decompressor)
+ {
+ const int scan_no =
+ ((j_decompress_ptr)cinfo)->input_scan_number;
+ if (scan_no >= sp->max_allowed_scan_number)
+ {
+ TIFFErrorExt(((JPEGState *) cinfo)->tif->tif_clientdata,
+ "TIFFjpeg_progress_monitor",
+ "Scan number %d exceeds maximum scans (%d). This limit "
+ "can be raised through the LIBTIFF_JPEG_MAX_ALLOWED_SCAN_NUMBER "
+ "environment variable.",
+ scan_no, sp->max_allowed_scan_number);
+
+ jpeg_abort(cinfo); /* clean up libjpeg state */
+ LONGJMP(sp->exit_jmpbuf, 1); /* return to libtiff caller */
+ }
+ }
+}
+
+
/*
* Interface routines. This layer of routines exists
* primarily to limit side-effects from using setjmp.
@@ -345,8 +378,23 @@ TIFFjpeg_read_header(JPEGState* sp, boolean require_image)
}
static int
+TIFFjpeg_has_multiple_scans(JPEGState* sp)
+{
+ return CALLJPEG(sp, 0, jpeg_has_multiple_scans(&sp->cinfo.d));
+}
+
+static int
TIFFjpeg_start_decompress(JPEGState* sp)
{
+ const char* sz_max_allowed_scan_number;
+ /* progress monitor */
+ sp->cinfo.d.progress = &sp->progress;
+ sp->progress.progress_monitor = TIFFjpeg_progress_monitor;
+ sp->max_allowed_scan_number = 100;
+ sz_max_allowed_scan_number = getenv("LIBTIFF_JPEG_MAX_ALLOWED_SCAN_NUMBER");
+ if( sz_max_allowed_scan_number )
+ sp->max_allowed_scan_number = atoi(sz_max_allowed_scan_number);
+
return CALLVJPEG(sp, jpeg_start_decompress(&sp->cinfo.d));
}
@@ -597,9 +645,8 @@ std_term_source(j_decompress_ptr cinfo)
}
static void
-TIFFjpeg_data_src(JPEGState* sp, TIFF* tif)
+TIFFjpeg_data_src(JPEGState* sp)
{
- (void) tif;
sp->cinfo.d.src = &sp->src;
sp->src.init_source = std_init_source;
sp->src.fill_input_buffer = std_fill_input_buffer;
@@ -625,9 +672,9 @@ tables_init_source(j_decompress_ptr cinfo)
}
static void
-TIFFjpeg_tables_src(JPEGState* sp, TIFF* tif)
+TIFFjpeg_tables_src(JPEGState* sp)
{
- TIFFjpeg_data_src(sp, tif);
+ TIFFjpeg_data_src(sp);
sp->src.init_source = tables_init_source;
}
@@ -984,7 +1031,7 @@ JPEGSetupDecode(TIFF* tif)
/* Read JPEGTables if it is present */
if (TIFFFieldSet(tif,FIELD_JPEGTABLES)) {
- TIFFjpeg_tables_src(sp, tif);
+ TIFFjpeg_tables_src(sp);
if(TIFFjpeg_read_header(sp,FALSE) != JPEG_HEADER_TABLES_ONLY) {
TIFFErrorExt(tif->tif_clientdata, "JPEGSetupDecode", "Bogus JPEGTables field");
return (0);
@@ -1006,11 +1053,47 @@ JPEGSetupDecode(TIFF* tif)
}
/* Set up for reading normal data */
- TIFFjpeg_data_src(sp, tif);
+ TIFFjpeg_data_src(sp);
tif->tif_postdecode = _TIFFNoPostDecode; /* override byte swapping */
return (1);
}
+/* Returns 1 if the full strip should be read, even when doing scanline per */
+/* scanline decoding. This happens when the JPEG stream uses multiple scans. */
+/* Currently only called in CHUNKY_STRIP_READ_SUPPORT mode through */
+/* scanline interface. */
+/* Only reads tif->tif_dir.td_bitspersample, tif->tif_rawdata and */
+/* tif->tif_rawcc members. */
+/* Can be called independently of the usual setup/predecode/decode states */
+int TIFFJPEGIsFullStripRequired(TIFF* tif)
+{
+ int ret;
+ JPEGState state;
+
+#if defined(JPEG_DUAL_MODE_8_12) && !defined(TIFFJPEGIsFullStripRequired)
+ if( tif->tif_dir.td_bitspersample == 12 )
+ return TIFFJPEGIsFullStripRequired_12( tif );
+#endif
+
+ memset(&state, 0, sizeof(JPEGState));
+ state.tif = tif;
+
+ TIFFjpeg_create_decompress(&state);
+
+ TIFFjpeg_data_src(&state);
+
+ if (TIFFjpeg_read_header(&state, TRUE) != JPEG_HEADER_OK)
+ {
+ TIFFjpeg_destroy(&state);
+ return (0);
+ }
+ ret = TIFFjpeg_has_multiple_scans(&state);
+
+ TIFFjpeg_destroy(&state);
+
+ return ret;
+}
+
/*
* Set up for decoding a strip or tile.
*/
@@ -1051,13 +1134,13 @@ JPEGPreDecode(TIFF* tif, uint16 s)
/*
* Check image parameters and set decompression parameters.
*/
- segment_width = td->td_imagewidth;
- segment_height = td->td_imagelength - tif->tif_row;
if (isTiled(tif)) {
segment_width = td->td_tilewidth;
segment_height = td->td_tilelength;
sp->bytesperline = TIFFTileRowSize(tif);
} else {
+ segment_width = td->td_imagewidth;
+ segment_height = td->td_imagelength - tif->tif_row;
if (segment_height > td->td_rowsperstrip)
segment_height = td->td_rowsperstrip;
sp->bytesperline = TIFFScanlineSize(tif);
@@ -1078,9 +1161,23 @@ JPEGPreDecode(TIFF* tif, uint16 s)
segment_width, segment_height,
sp->cinfo.d.image_width,
sp->cinfo.d.image_height);
- }
- if (sp->cinfo.d.image_width > segment_width ||
- sp->cinfo.d.image_height > segment_height) {
+ }
+ if( sp->cinfo.d.image_width == segment_width &&
+ sp->cinfo.d.image_height > segment_height &&
+ tif->tif_row + segment_height == td->td_imagelength &&
+ !isTiled(tif) ) {
+ /* Some files have a last strip, that should be truncated, */
+ /* but their JPEG codestream has still the maximum strip */
+ /* height. Warn about this as this is non compliant, but */
+ /* we can safely recover from that. */
+ TIFFWarningExt(tif->tif_clientdata, module,
+ "JPEG strip size exceeds expected dimensions,"
+ " expected %dx%d, got %dx%d",
+ segment_width, segment_height,
+ sp->cinfo.d.image_width, sp->cinfo.d.image_height);
+ }
+ else if (sp->cinfo.d.image_width > segment_width ||
+ sp->cinfo.d.image_height > segment_height) {
/*
* This case could be dangerous, if the strip or tile size has
* been reported as less than the amount of data jpeg will
@@ -1113,6 +1210,47 @@ JPEGPreDecode(TIFF* tif, uint16 s)
return (0);
}
#endif
+
+ /* In some cases, libjpeg needs to allocate a lot of memory */
+ /* http://www.libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf */
+ if( TIFFjpeg_has_multiple_scans(sp) )
+ {
+ /* In this case libjpeg will need to allocate memory or backing */
+ /* store for all coefficients */
+ /* See call to jinit_d_coef_controller() from master_selection() */
+ /* in libjpeg */
+ toff_t nRequiredMemory = (toff_t)sp->cinfo.d.image_width *
+ sp->cinfo.d.image_height *
+ sp->cinfo.d.num_components *
+ ((td->td_bitspersample+7)/8);
+ /* BLOCK_SMOOTHING_SUPPORTED is generally defined, so we need */
+ /* to replicate the logic of jinit_d_coef_controller() */
+ if( sp->cinfo.d.progressive_mode )
+ nRequiredMemory *= 3;
+
+#ifndef TIFF_LIBJPEG_LARGEST_MEM_ALLOC
+#define TIFF_LIBJPEG_LARGEST_MEM_ALLOC (100 * 1024 * 1024)
+#endif
+
+ if( nRequiredMemory > TIFF_LIBJPEG_LARGEST_MEM_ALLOC &&
+ getenv("LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC") == NULL )
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Reading this strip would require libjpeg to allocate "
+ "at least %u bytes. "
+ "This is disabled since above the %u threshold. "
+ "You may override this restriction by defining the "
+ "LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC environment variable, "
+ "or recompile libtiff by defining the "
+ "TIFF_LIBJPEG_LARGEST_MEM_ALLOC macro to a value greater "
+ "than %u",
+ (unsigned)nRequiredMemory,
+ (unsigned)TIFF_LIBJPEG_LARGEST_MEM_ALLOC,
+ (unsigned)TIFF_LIBJPEG_LARGEST_MEM_ALLOC);
+ return (0);
+ }
+ }
+
if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
/* Component 0 should have expected sampling factors */
if (sp->cinfo.d.comp_info[0].h_samp_factor != sp->h_sampling ||
@@ -1374,10 +1512,18 @@ JPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
{
JPEGState *sp = JState(tif);
tmsize_t nrows;
+ TIFFDirectory *td = &tif->tif_dir;
(void) s;
+ nrows = sp->cinfo.d.image_height;
+ /* For last strip, limit number of rows to its truncated height */
+ /* even if the codestream height is larger (which is not compliant, */
+ /* but that we tolerate) */
+ if( (uint32)nrows > td->td_imagelength - tif->tif_row && !isTiled(tif) )
+ nrows = td->td_imagelength - tif->tif_row;
+
/* data is expected to be read in multiples of a scanline */
- if ( (nrows = sp->cinfo.d.image_height) != 0 ) {
+ if ( nrows != 0 ) {
/* Cb,Cr both have sampling factors 1, so this is correct */
JDIMENSION clumps_per_line = sp->cinfo.d.comp_info[1].downsampled_width;
@@ -2318,12 +2464,22 @@ static int JPEGInitializeLibJPEG( TIFF * tif, int decompress )
#ifndef TIFF_JPEG_MAX_MEMORY_TO_USE
#define TIFF_JPEG_MAX_MEMORY_TO_USE (10 * 1024 * 1024)
#endif
- /* Increase the max memory usable. This helps when creating files */
- /* with "big" tile, without using libjpeg temporary files. */
- /* For example a 512x512 tile with 3 bands */
- /* requires 1.5 MB which is above libjpeg 1MB default */
- if( sp->cinfo.c.mem->max_memory_to_use < TIFF_JPEG_MAX_MEMORY_TO_USE )
- sp->cinfo.c.mem->max_memory_to_use = TIFF_JPEG_MAX_MEMORY_TO_USE;
+ /* libjpeg turbo 1.5.2 honours max_memory_to_use, but has no backing */
+ /* store implementation, so better not set max_memory_to_use ourselves. */
+ /* See https://github.com/libjpeg-turbo/libjpeg-turbo/issues/162 */
+ if( sp->cinfo.c.mem->max_memory_to_use > 0 )
+ {
+ /* This is to address bug related in ticket GDAL #1795. */
+ if (getenv("JPEGMEM") == NULL)
+ {
+ /* Increase the max memory usable. This helps when creating files */
+ /* with "big" tile, without using libjpeg temporary files. */
+ /* For example a 512x512 tile with 3 bands */
+ /* requires 1.5 MB which is above libjpeg 1MB default */
+ if( sp->cinfo.c.mem->max_memory_to_use < TIFF_JPEG_MAX_MEMORY_TO_USE )
+ sp->cinfo.c.mem->max_memory_to_use = TIFF_JPEG_MAX_MEMORY_TO_USE;
+ }
+ }
}
sp->cinfo_initialized = TRUE;