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sdp: dynamically allocate buffers

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Remove the static maximum buffer size and replace with dynamic allocation of as
much bytes as needed. Also avoids doing large allocations on the stack.
This commit is contained in:
Wim Taymans 2013-04-15 15:37:17 +02:00
parent 83a877daf6
commit 04d5dafa71
1 changed files with 18 additions and 12 deletions
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30
gst-libs/gst/sdp/gstsdpmessage.c
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@ -65,9 +65,6 @@
#include "gstsdpmessage.h"
/* FIXME, is currently allocated on the stack */
#define MAX_LINE_LEN 1024 * 16
#define FREE_STRING(field) g_free (field); (field) = NULL
#define REPLACE_STRING(field, val) FREE_STRING(field); (field) = g_strdup (val)
@ -2111,7 +2108,7 @@ gst_sdp_parse_line (SDPContext * c, gchar type, gchar * buffer)
}
case 'b':
{
gchar str2[MAX_LINE_LEN];
gchar str2[32];
read_string_del (str, sizeof (str), ':', &p);
if (*p != '\0')
@ -2189,11 +2186,12 @@ GstSDPResult
gst_sdp_message_parse_buffer (const guint8 * data, guint size,
GstSDPMessage * msg)
{
gchar *p;
gchar *p, *s;
SDPContext c;
gchar type;
gchar buffer[MAX_LINE_LEN];
guint idx = 0;
gchar *buffer = NULL;
guint bufsize = 0;
guint len = 0;
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
g_return_val_if_fail (data != NULL, GST_SDP_EINVAL);
@ -2216,13 +2214,18 @@ gst_sdp_message_parse_buffer (const guint8 * data, guint size,
goto line_done;
p++;
idx = 0;
while (*p != '\n' && *p != '\r' && *p != '\0') {
if (idx < sizeof (buffer) - 1)
buffer[idx++] = *p;
s = p;
while (*p != '\n' && *p != '\r' && *p != '\0')
p++;
len = p - s;
if (bufsize <= len) {
buffer = g_malloc (len + 1);
bufsize = len + 1;
}
buffer[idx] = '\0';
memcpy (buffer, s, len);
buffer[len] = '\0';
gst_sdp_parse_line (&c, type, buffer);
line_done:
@ -2232,6 +2235,9 @@ gst_sdp_message_parse_buffer (const guint8 * data, guint size,
p++;
}
if (buffer)
g_free (buffer);
return GST_SDP_OK;
}