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udpnetutils: add helper functions for udp uri handling

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Add some helpers to parse udp uris. Make sure IPV6 is supported too.
This commit is contained in:
Wim Taymans 2010-03-09 17:13:31 +01:00
parent a6dfe96169
commit 14ae2080d2
2 changed files with 135 additions and 8 deletions
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113
gst/udp/gstudpnetutils.c
View file

@ -27,6 +27,8 @@
#include <stdio.h>
#include <memory.h>
#include <gst/gst.h>
#include "gstudpnetutils.h"
/* EAI_ADDRFAMILY was obsoleted in BSD at some point */
@ -352,3 +354,114 @@ gst_udp_is_multicast (struct sockaddr_storage *addr)
return ret;
}
void
gst_udp_uri_init (GstUDPUri * uri, const gchar * host, gint port)
{
uri->host = NULL;
uri->port = -1;
gst_udp_uri_update (uri, host, port);
}
int
gst_udp_uri_update (GstUDPUri * uri, const gchar * host, gint port)
{
if (host) {
g_free (uri->host);
uri->host = g_strdup (host);
if (strchr (host, ':'))
uri->is_ipv6 = TRUE;
else
uri->is_ipv6 = FALSE;
}
if (port != -1)
uri->port = port;
return 0;
}
int
gst_udp_parse_uri (const gchar * uristr, GstUDPUri * uri)
{
gchar *protocol;
gchar *location, *location_end;
gchar *colptr;
protocol = gst_uri_get_protocol (uristr);
if (strcmp (protocol, "udp") != 0)
goto wrong_protocol;
g_free (protocol);
location = gst_uri_get_location (uristr);
if (!location)
return FALSE;
GST_DEBUG ("got location '%s'", location);
if (location[0] == '[') {
GST_DEBUG ("parse IPV6 address '%s'", location);
location_end = strchr (location, ']');
if (location_end == NULL)
goto wrong_address;
uri->is_ipv6 = TRUE;
g_free (uri->host);
uri->host = g_strndup (location + 1, location_end - location - 1);
colptr = strrchr (location_end, ':');
} else {
GST_DEBUG ("parse IPV4 address '%s'", location);
uri->is_ipv6 = FALSE;
colptr = strrchr (location, ':');
g_free (uri->host);
if (colptr != NULL) {
uri->host = g_strndup (location, colptr - location);
} else {
uri->host = g_strdup (location);
}
}
GST_DEBUG ("host set to '%s'", uri->host);
if (colptr != NULL) {
uri->port = atoi (colptr + 1);
}
g_free (location);
return 0;
/* ERRORS */
wrong_protocol:
{
GST_ERROR ("error parsing uri %s: wrong protocol (%s != udp)", uristr,
protocol);
g_free (protocol);
return -1;
}
wrong_address:
{
GST_ERROR ("error parsing uri %s", uristr);
g_free (location);
return -1;
}
}
gchar *
gst_udp_uri_string (GstUDPUri * uri)
{
gchar *result;
if (uri->is_ipv6) {
result = g_strdup_printf ("udp://[%s]:%d", uri->host, uri->port);
} else {
result = g_strdup_printf ("udp://%s:%d", uri->host, uri->port);
}
return result;
}
void
gst_udp_uri_free (GstUDPUri * uri)
{
g_free (uri->host);
uri->host = NULL;
uri->port = -1;
}

14
gst/udp/gstudpnetutils.h
View file

@ -75,6 +75,12 @@ gboolean gst_udp_net_utils_win32_wsa_startup (GstObject * obj);
#endif
typedef struct {
gchar *host;
gint port;
gboolean is_ipv6;
} GstUDPUri;
int gst_udp_get_sockaddr_length (struct sockaddr_storage *addr);
int gst_udp_get_addr (const char *hostname, int port, struct sockaddr_storage *addr);
@ -83,9 +89,17 @@ int gst_udp_is_multicast (struct sockaddr_storage *addr);
int gst_udp_set_loop (int sockfd, gboolean loop);
int gst_udp_set_ttl (int sockfd, int ttl, gboolean is_multicast);
/* multicast groups */
int gst_udp_join_group (int sockfd, struct sockaddr_storage *addr,
gchar *iface);
int gst_udp_leave_group (int sockfd, struct sockaddr_storage *addr);
/* uri handling */
void gst_udp_uri_init (GstUDPUri *uri, const gchar *host, gint port);
int gst_udp_uri_update (GstUDPUri *uri, const gchar *host, gint port);
int gst_udp_parse_uri (const gchar *uristr, GstUDPUri *uri);
gchar * gst_udp_uri_string (GstUDPUri *uri);
void gst_udp_uri_free (GstUDPUri *uri);
#endif /* __GST_UDP_NET_UTILS_H__*/