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@ -3000,7 +3000,7 @@ diff -u libmagic.orig/readelf.h libmagic/readelf.h |
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typedef uint8_t Elf64_Char; |
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diff -u libmagic.orig/softmagic.c libmagic/softmagic.c
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--- libmagic.orig/softmagic.c Thu Mar 21 18:45:14 2013
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+++ libmagic/softmagic.c Thu Feb 20 18:57:46 2014
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+++ libmagic/softmagic.c Mon Mar 10 14:03:18 2014
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@@ -41,6 +41,11 @@
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#include <stdlib.h> |
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#include <time.h> |
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@ -3013,7 +3013,16 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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private int match(struct magic_set *, struct magic *, uint32_t, |
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const unsigned char *, size_t, size_t, int, int, int, int, int *, int *, |
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@@ -69,13 +74,13 @@
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@@ -62,6 +67,8 @@
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private void cvt_32(union VALUETYPE *, const struct magic *); |
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private void cvt_64(union VALUETYPE *, const struct magic *); |
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+#define OFFSET_OOB(n, o, i) ((n) < (o) || (i) > ((n) - (o)))
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+
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/* |
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* softmagic - lookup one file in parsed, in-memory copy of database |
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* Passed the name and FILE * of one file to be typed. |
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@@ -69,13 +76,13 @@
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/*ARGSUSED1*/ /* nbytes passed for regularity, maybe need later */ |
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protected int |
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file_softmagic(struct magic_set *ms, const unsigned char *buf, size_t nbytes, |
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@ -3029,7 +3038,7 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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NULL)) != 0) |
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return rv; |
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@@ -132,7 +137,7 @@
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@@ -132,7 +139,7 @@
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struct magic *m = &magic[magindex]; |
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if (m->type != FILE_NAME) |
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@ -3038,7 +3047,7 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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#define FLT (STRING_BINTEST | STRING_TEXTTEST) |
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((text && (m->str_flags & FLT) == STRING_BINTEST) || |
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(!text && (m->str_flags & FLT) == STRING_TEXTTEST))) || |
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@@ -209,8 +214,8 @@
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@@ -209,8 +216,8 @@
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if (file_check_mem(ms, ++cont_level) == -1) |
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return -1; |
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@ -3049,7 +3058,7 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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m = &magic[magindex]; |
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ms->line = m->lineno; /* for messages */ |
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@@ -335,44 +340,22 @@
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@@ -335,44 +342,22 @@
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private int |
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check_fmt(struct magic_set *ms, struct magic *m) |
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{ |
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@ -3104,7 +3113,7 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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private int32_t |
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mprint(struct magic_set *ms, struct magic *m) |
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{ |
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@@ -583,13 +566,13 @@
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@@ -583,13 +568,13 @@
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char *cp; |
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int rval; |
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@ -3120,7 +3129,7 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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if (rval == -1) |
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return -1; |
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@@ -835,16 +818,16 @@
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@@ -835,16 +820,16 @@
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if (m->num_mask) \ |
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switch (m->mask_op & FILE_OPS_MASK) { \ |
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case FILE_OPADD: \ |
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@ -3141,7 +3150,7 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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break; \ |
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} \ |
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@@ -1145,9 +1128,6 @@
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@@ -1145,9 +1130,6 @@
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"nbytes=%zu, count=%u)\n", m->type, m->flag, offset, o, |
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nbytes, count); |
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mdebug(offset, (char *)(void *)p, sizeof(union VALUETYPE)); |
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@ -3151,7 +3160,79 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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} |
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if (m->flag & INDIR) { |
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@@ -1644,16 +1624,13 @@
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@@ -1191,7 +1173,7 @@
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} |
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switch (cvt_flip(m->in_type, flip)) { |
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case FILE_BYTE: |
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- if (nbytes < (offset + 1))
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+ if (OFFSET_OOB(nbytes, offset, 1))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1226,7 +1208,7 @@
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offset = ~offset; |
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break; |
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case FILE_BESHORT: |
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- if (nbytes < (offset + 2))
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+ if (OFFSET_OOB(nbytes, offset, 2))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1278,7 +1260,7 @@
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offset = ~offset; |
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break; |
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case FILE_LESHORT: |
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- if (nbytes < (offset + 2))
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+ if (OFFSET_OOB(nbytes, offset, 2))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1330,7 +1312,7 @@
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offset = ~offset; |
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break; |
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case FILE_SHORT: |
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- if (nbytes < (offset + 2))
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+ if (OFFSET_OOB(nbytes, offset, 2))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1367,7 +1349,7 @@
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break; |
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case FILE_BELONG: |
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case FILE_BEID3: |
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- if (nbytes < (offset + 4))
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+ if (OFFSET_OOB(nbytes, offset, 4))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1438,7 +1420,7 @@
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break; |
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case FILE_LELONG: |
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case FILE_LEID3: |
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- if (nbytes < (offset + 4))
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+ if (OFFSET_OOB(nbytes, offset, 4))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1508,7 +1490,7 @@
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offset = ~offset; |
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break; |
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case FILE_MELONG: |
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- if (nbytes < (offset + 4))
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+ if (OFFSET_OOB(nbytes, offset, 4))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1578,7 +1560,7 @@
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offset = ~offset; |
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break; |
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case FILE_LONG: |
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- if (nbytes < (offset + 4))
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+ if (OFFSET_OOB(nbytes, offset, 4))
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return 0; |
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if (off) { |
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switch (m->in_op & FILE_OPS_MASK) { |
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@@ -1644,23 +1626,20 @@
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if ((ms->flags & MAGIC_DEBUG) != 0) { |
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mdebug(offset, (char *)(void *)p, |
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sizeof(union VALUETYPE)); |
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@ -3165,20 +3246,57 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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switch (m->type) { |
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case FILE_BYTE: |
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- if (nbytes < (offset + 1)) /* should alway be true */
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+ if (nbytes < (offset + 1)) /* should always be true */
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+ if (OFFSET_OOB(nbytes, offset, 1))
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return 0; |
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break; |
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case FILE_SHORT: |
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case FILE_BESHORT: |
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case FILE_LESHORT: |
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- if (nbytes < (offset + 2))
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+ if (OFFSET_OOB(nbytes, offset, 2))
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return 0; |
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break; |
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@@ -1703,6 +1680,8 @@
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@@ -1679,38 +1658,40 @@
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case FILE_FLOAT: |
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case FILE_BEFLOAT: |
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case FILE_LEFLOAT: |
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- if (nbytes < (offset + 4))
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+ if (OFFSET_OOB(nbytes, offset, 4))
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return 0; |
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break; |
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case FILE_DOUBLE: |
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case FILE_BEDOUBLE: |
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case FILE_LEDOUBLE: |
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- if (nbytes < (offset + 8))
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+ if (OFFSET_OOB(nbytes, offset, 8))
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return 0; |
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break; |
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case FILE_STRING: |
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case FILE_PSTRING: |
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case FILE_SEARCH: |
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- if (nbytes < (offset + m->vallen))
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+ if (OFFSET_OOB(nbytes, offset, m->vallen))
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return 0; |
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break; |
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case FILE_REGEX: |
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- if (nbytes < offset)
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+ if (OFFSET_OOB(nbytes, offset, 0))
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return 0; |
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break; |
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case FILE_INDIRECT: |
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- if (nbytes < offset)
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+ if (offset == 0)
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+ return 0;
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if (nbytes < offset) |
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+ if (OFFSET_OOB(nbytes, offset, 0))
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return 0; |
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sbuf = ms->o.buf; |
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@@ -1710,19 +1689,21 @@
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soffset = ms->offset; |
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ms->o.buf = NULL; |
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ms->offset = 0; |
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rv = file_softmagic(ms, s + offset, nbytes - offset, |
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@ -3187,24 +3305,38 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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if ((ms->flags & MAGIC_DEBUG) != 0) |
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fprintf(stderr, "indirect @offs=%u[%d]\n", offset, rv); |
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rbuf = ms->o.buf; |
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ms->o.buf = sbuf; |
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@@ -1718,16 +1699,26 @@
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ms->offset = soffset; |
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if (rv == 1) { |
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- if ((ms->flags & (MAGIC_MIME|MAGIC_APPLE)) == 0 &&
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+ if ((ms->flags & (MAGIC_MIME|MAGIC_APPLE)) == 0 &&
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file_printf(ms, m->desc, offset) == -1) |
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- return -1;
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+ return -1;
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if (file_printf(ms, "%s", rbuf) == -1) |
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if ((ms->flags & (MAGIC_MIME|MAGIC_APPLE)) == 0 && |
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- file_printf(ms, m->desc, offset) == -1)
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+ file_printf(ms, m->desc, offset) == -1) {
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+ if (rbuf) {
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+ efree(rbuf);
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+ }
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return -1; |
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- if (file_printf(ms, "%s", rbuf) == -1)
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+ }
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+ if (file_printf(ms, "%s", rbuf) == -1) {
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+ if (rbuf) {
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+ efree(rbuf);
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+ }
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return -1; |
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- free(rbuf);
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+ }
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+ }
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+ if (rbuf) {
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+ efree(rbuf);
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} |
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return rv; |
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@@ -1837,6 +1818,42 @@
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case FILE_USE: |
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- if (nbytes < offset)
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+ if (OFFSET_OOB(nbytes, offset, 0))
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return 0; |
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sbuf = m->value.s; |
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if (*sbuf == '^') { |
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@@ -1837,6 +1828,42 @@
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return file_strncmp(a, b, len, flags); |
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} |
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@ -3247,7 +3379,7 @@ diff -u libmagic.orig/softmagic.c libmagic/softmagic.c |
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private int |
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magiccheck(struct magic_set *ms, struct magic *m) |
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{ |
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@@ -1996,69 +2013,157 @@
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@@ -1996,69 +2023,157 @@
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break; |
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} |
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case FILE_REGEX: { |
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