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sys/dvb/camutils.c: Extra checks to prevent data corruption/segfaults.

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Original commit message from CVS:
* sys/dvb/camutils.c:
Extra checks to prevent data corruption/segfaults.
This commit is contained in:
Zaheer Abbas Merali 2008-02-27 12:34:00 +00:00
parent 67e9c433df
commit 4bf32cac7a
2 changed files with 22 additions and 11 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2008-02-27 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* sys/dvb/camutils.c:
Extra checks to prevent data corruption/segfaults.
2008-02-26 Stefan Kost <ensonic@users.sf.net>
* ext/nas/nassink.c:

28
sys/dvb/camutils.c
View file

@ -232,12 +232,14 @@ cam_build_ca_pmt (GstStructure * pmt, guint8 list_management, guint8 cmd_id,
streams = gst_structure_get_value (pmt, "streams");
value = gst_structure_get_value (pmt, "descriptors");
if (value != NULL) {
program_descriptors = g_value_get_boxed (value);
/* get the length of program level CA_descriptor()s */
len = get_ca_descriptors_length (program_descriptors);
if (len > 0)
/* add one byte for the program level cmd_id */
len += 1;
if (G_VALUE_HOLDS_BOXED (value)) {
program_descriptors = g_value_get_boxed (value);
/* get the length of program level CA_descriptor()s */
len = get_ca_descriptors_length (program_descriptors);
if (len > 0)
/* add one byte for the program level cmd_id */
len += 1;
}
}
lengths = g_list_append (lengths, GINT_TO_POINTER (len));
body_size += 6 + len;
@ -249,12 +251,16 @@ cam_build_ca_pmt (GstStructure * pmt, guint8 list_management, guint8 cmd_id,
stream = g_value_get_boxed (value);
value = gst_structure_get_value (stream, "descriptors");
stream_descriptors = g_value_get_boxed (value);
if (value != NULL) {
if (G_VALUE_HOLDS_BOXED (value)) {
stream_descriptors = g_value_get_boxed (value);
len = get_ca_descriptors_length (stream_descriptors);
if (len > 0)
/* one byte for the stream level cmd_id */
len += 1;
len = get_ca_descriptors_length (stream_descriptors);
if (len > 0)
/* one byte for the stream level cmd_id */
len += 1;
}
}
lengths = g_list_append (lengths, GINT_TO_POINTER (len));
body_size += 5 + len;