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dash_mpd: restrict segment template format strings to %0[0-9]*d as per spec

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=751735
This commit is contained in:
Vincent Penquerc'h 2015-10-29 12:04:31 +00:00
parent 4eea6c3833
commit 7443f35249
2 changed files with 14 additions and 18 deletions
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22
ext/dash/gstmpdparser.c
View file

@ -2968,23 +2968,19 @@ validate_format (const gchar * format)
return FALSE;
p++;
/* the spec mandates a format like %0[width]d
But we also accept %d, because it doesn't hurt us
*/
/* Following the %, if we have a number, it must start with 0 */
if (g_ascii_isdigit (p[0]) && p[0] != '0')
/* the spec mandates a format like %0[width]d */
/* Following the %, we must have a 0 */
if (p[0] != '0')
return FALSE;
/* Following the % must be a number, or any of d, x or u.
* x and u are not part of the spec, but don't hurt us
/* Following the % must be a number starting with 0
*/
while (g_ascii_isdigit (*p))
p++;
/* After any 0 and alphanumeric values, there must be
* an d, x or u.
/* After any 0 and alphanumeric values, there must be a d.
*/
if (p[0] != 'd' && p[0] != 'x' && p[0] != 'u')
if (p[0] != 'd')
return FALSE;
p++;
@ -3020,10 +3016,10 @@ promote_format_to_uint64 (const gchar * format)
p++;
}
/* After any 0 and alphanumeric values, there must be
* an d, x or u. Otherwise validation would have failed
/* After any 0 and alphanumeric values, there must be a d.
* Otherwise validation would have failed
*/
g_assert (p[0] == 'd' || p[0] == 'x' || p[0] == 'u');
g_assert (p[0] == 'd');
promoted_format =
g_strdup_printf ("%.*s" G_GINT64_MODIFIER "%s", (gint) (p - format),

10
tests/check/elements/dash_mpd.c
View file

@ -2488,7 +2488,7 @@ GST_START_TEST (dash_mpdparser_template_parsing)
{"TestMedia$Bandwidth$$$test", "TestMedia2500$test"}, /* Bandwidth identifier */
{"TestMedia$Time$", "TestMedia100"}, /* Time identifier */
{"TestMedia$Time", NULL}, /* Identifier not finished with $ */
{"Time$Time%d$", "Time100"}, /* usage of %d (no width) */
{"Time$Time%d$", NULL}, /* usage of %d (no width) */
{"Time$Time%0d$", "Time100"}, /* usage of format smaller than number of digits */
{"Time$Time%01d$", "Time100"}, /* usage of format smaller than number of digits */
{"Time$Time%05d$", "Time00100"}, /* usage of format bigger than number of digits */
@ -2503,10 +2503,10 @@ GST_START_TEST (dash_mpdparser_template_parsing)
{"$Bandwidth1$", NULL}, /* incorrect identifier */
{"$Number1$", NULL}, /* incorrect identifier */
{"$RepresentationID%01d$", NULL}, /* incorrect format: RepresentationID does not support formatting */
{"Time$Time%05u$", "Time00100"}, /* %u format */
{"Time$Time%05x$", "Time00064"}, /* %x format */
{"Time$Time%05utest$", "Time00100test"}, /* %u format followed by text */
{"Time$Time%05xtest$", "Time00064test"}, /* %x format followed by text */
{"Time$Time%05u$", NULL}, /* %u format */
{"Time$Time%05x$", NULL}, /* %x format */
{"Time$Time%05utest$", NULL}, /* %u format followed by text */
{"Time$Time%05xtest$", NULL}, /* %x format followed by text */
{"Time$Time%05xtest%$", NULL}, /* second % character in format */
};