50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
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diff --git a/jdmarker.c b/jdmarker.c
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index f2a9cc4..2edebc2 100644
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--- a/jdmarker.c
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+++ b/jdmarker.c
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@@ -305,7 +305,7 @@ get_sos (j_decompress_ptr cinfo)
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/* Process a SOS marker */
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{
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INT32 length;
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- int i, ci, n, c, cc;
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+ int i, j, ci, n, c, cc;
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jpeg_component_info * compptr;
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INPUT_VARS(cinfo);
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@@ -340,7 +340,11 @@ get_sos (j_decompress_ptr cinfo)
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ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc);
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id_found:
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-
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+ for (j = 0; j < i; j++) {
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+ if (cinfo->cur_comp_info[j] == compptr) {
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+ ERREXIT1(cinfo, JERR_DUP_COMPONENT_ID, cc);
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+ }
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+ }
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cinfo->cur_comp_info[i] = compptr;
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compptr->dc_tbl_no = (c >> 4) & 15;
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compptr->ac_tbl_no = (c ) & 15;
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@@ -480,7 +484,9 @@ get_dht (j_decompress_ptr cinfo)
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*htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo);
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MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits));
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- MEMCOPY((*htblptr)->huffval, huffval, SIZEOF((*htblptr)->huffval));
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+ MEMCOPY((*htblptr)->huffval, huffval, count);
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+
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+ MEMZERO((*htblptr)->huffval + count, SIZEOF( (*htblptr)->huffval) - count);
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}
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if (length != 0)
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diff --git a/jerror.h b/jerror.h
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index 1cfb2b1..4007c49 100644
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--- a/jerror.h
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+++ b/jerror.h
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@@ -77,6 +77,7 @@ JMESSAGE(JERR_DAC_INDEX, "Bogus DAC index %d")
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JMESSAGE(JERR_DAC_VALUE, "Bogus DAC value 0x%x")
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JMESSAGE(JERR_DHT_INDEX, "Bogus DHT index %d")
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JMESSAGE(JERR_DQT_INDEX, "Bogus DQT index %d")
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+JMESSAGE(JERR_DUP_COMPONENT_ID, "Duplicate component ID")
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JMESSAGE(JERR_EMPTY_IMAGE, "Empty JPEG image (DNL not supported)")
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JMESSAGE(JERR_EMS_READ, "Read from EMS failed")
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JMESSAGE(JERR_EMS_WRITE, "Write to EMS failed")
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