#include "libavutil/avstring.h"
#include "avformat.h"
#include "avio_internal.h"
-#include "rtpdec.h"
+#include "rtp.h"
+#include "rtpproto.h"
#include "url.h"
-#include <unistd.h>
#include <stdarg.h>
#include "internal.h"
#include "network.h"
#if HAVE_POLL_H
#include <sys/poll.h>
#endif
-#include <sys/time.h>
-
-#define RTP_TX_BUF_SIZE (64 * 1024)
-#define RTP_RX_BUF_SIZE (128 * 1024)
typedef struct RTPContext {
URLContext *rtp_hd, *rtcp_hd;
- int rtp_fd, rtcp_fd;
+ int rtp_fd, rtcp_fd, nb_ssm_include_addrs, nb_ssm_exclude_addrs;
+ struct sockaddr_storage **ssm_include_addrs, **ssm_exclude_addrs;
} RTPContext;
/**
* @return zero if no error.
*/
-int rtp_set_remote_url(URLContext *h, const char *uri)
+int ff_rtp_set_remote_url(URLContext *h, const char *uri)
{
RTPContext *s = h->priv_data;
char hostname[256];
- int port;
+ int port, rtcp_port;
+ const char *p;
char buf[1024];
char path[1024];
av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port,
path, sizeof(path), uri);
+ rtcp_port = port + 1;
+
+ p = strchr(uri, '?');
+ if (p) {
+ if (av_find_info_tag(buf, sizeof(buf), "rtcpport", p)) {
+ rtcp_port = strtol(buf, NULL, 10);
+ }
+ }
ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, port, "%s", path);
ff_udp_set_remote_url(s->rtp_hd, buf);
- ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, port + 1, "%s", path);
+ ff_url_join(buf, sizeof(buf), "udp", NULL, hostname, rtcp_port, "%s", path);
ff_udp_set_remote_url(s->rtcp_hd, buf);
return 0;
}
+static struct addrinfo* rtp_resolve_host(const char *hostname, int port,
+ int type, int family, int flags)
+{
+ struct addrinfo hints = { 0 }, *res = 0;
+ int error;
+ char service[16];
+
+ snprintf(service, sizeof(service), "%d", port);
+ hints.ai_socktype = type;
+ hints.ai_family = family;
+ hints.ai_flags = flags;
+ if ((error = getaddrinfo(hostname, service, &hints, &res))) {
+ res = NULL;
+ av_log(NULL, AV_LOG_ERROR, "rtp_resolve_host: %s\n", gai_strerror(error));
+ }
+
+ return res;
+}
+
+static int compare_addr(const struct sockaddr_storage *a,
+ const struct sockaddr_storage *b)
+{
+ if (a->ss_family != b->ss_family)
+ return 1;
+ if (a->ss_family == AF_INET) {
+ return (((const struct sockaddr_in *)a)->sin_addr.s_addr !=
+ ((const struct sockaddr_in *)b)->sin_addr.s_addr);
+ }
+
+#if defined(IPPROTO_IPV6)
+ if (a->ss_family == AF_INET6) {
+ const uint8_t *s6_addr_a = ((const struct sockaddr_in6 *)a)->sin6_addr.s6_addr;
+ const uint8_t *s6_addr_b = ((const struct sockaddr_in6 *)b)->sin6_addr.s6_addr;
+ return memcmp(s6_addr_a, s6_addr_b, 16);
+ }
+#endif
+ return 1;
+}
+
+static int rtp_check_source_lists(RTPContext *s, struct sockaddr_storage *source_addr_ptr)
+{
+ int i;
+ if (s->nb_ssm_exclude_addrs) {
+ for (i = 0; i < s->nb_ssm_exclude_addrs; i++) {
+ if (!compare_addr(source_addr_ptr, s->ssm_exclude_addrs[i]))
+ return 1;
+ }
+ }
+ if (s->nb_ssm_include_addrs) {
+ for (i = 0; i < s->nb_ssm_include_addrs; i++) {
+ if (!compare_addr(source_addr_ptr, s->ssm_include_addrs[i]))
+ return 0;
+ }
+ return 1;
+ }
+ return 0;
+}
/**
* add option to url of the form:
* "http://host:port/path?option1=val1&option2=val2...
*/
-static void url_add_option(char *buf, int buf_size, const char *fmt, ...)
+static av_printf_format(3, 4) void url_add_option(char *buf, int buf_size, const char *fmt, ...)
{
char buf1[1024];
va_list ap;
static void build_udp_url(char *buf, int buf_size,
const char *hostname, int port,
int local_port, int ttl,
- int max_packet_size, int connect)
+ int max_packet_size, int connect,
+ const char *include_sources,
+ const char *exclude_sources)
{
ff_url_join(buf, buf_size, "udp", NULL, hostname, port, NULL);
if (local_port >= 0)
url_add_option(buf, buf_size, "pkt_size=%d", max_packet_size);
if (connect)
url_add_option(buf, buf_size, "connect=1");
+ if (include_sources && include_sources[0])
+ url_add_option(buf, buf_size, "sources=%s", include_sources);
+ if (exclude_sources && exclude_sources[0])
+ url_add_option(buf, buf_size, "block=%s", exclude_sources);
+}
+
+static void rtp_parse_addr_list(URLContext *h, char *buf,
+ struct sockaddr_storage ***address_list_ptr,
+ int *address_list_size_ptr)
+{
+ struct addrinfo *ai = NULL;
+ struct sockaddr_storage *source_addr;
+ char tmp = '\0', *p = buf, *next;
+
+ /* Resolve all of the IPs */
+
+ while (p && p[0]) {
+ next = strchr(p, ',');
+
+ if (next) {
+ tmp = *next;
+ *next = '\0';
+ }
+
+ ai = rtp_resolve_host(p, 0, SOCK_DGRAM, AF_UNSPEC, 0);
+ if (ai) {
+ source_addr = av_mallocz(sizeof(struct sockaddr_storage));
+ if (!source_addr)
+ break;
+
+ memcpy(source_addr, ai->ai_addr, ai->ai_addrlen);
+ freeaddrinfo(ai);
+ dynarray_add(address_list_ptr, address_list_size_ptr, source_addr);
+ } else {
+ av_log(h, AV_LOG_WARNING, "Unable to resolve %s\n", p);
+ }
+
+ if (next) {
+ *next = tmp;
+ p = next + 1;
+ } else {
+ p = NULL;
+ }
+ }
}
/**
* 'connect=0/1' : do a connect() on the UDP socket
* deprecated option:
* 'localport=n' : set the local port to n
+ * 'sources=ip[,ip]' : list allowed source IP addresses
*
* if rtcpport isn't set the rtcp port will be the rtp port + 1
* if local rtp port isn't set any available port will be used for the local
static int rtp_open(URLContext *h, const char *uri, int flags)
{
- RTPContext *s;
+ RTPContext *s = h->priv_data;
int rtp_port, rtcp_port,
- is_output, ttl, connect,
+ ttl, connect,
local_rtp_port, local_rtcp_port, max_packet_size;
- char hostname[256];
+ char hostname[256], include_sources[1024] = "", exclude_sources[1024] = "";
char buf[1024];
char path[1024];
const char *p;
- is_output = (flags & AVIO_FLAG_WRITE);
-
- s = av_mallocz(sizeof(RTPContext));
- if (!s)
- return AVERROR(ENOMEM);
- h->priv_data = s;
-
av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &rtp_port,
path, sizeof(path), uri);
/* extract parameters */
if (av_find_info_tag(buf, sizeof(buf), "connect", p)) {
connect = strtol(buf, NULL, 10);
}
+ if (av_find_info_tag(buf, sizeof(buf), "sources", p)) {
+ av_strlcpy(include_sources, buf, sizeof(include_sources));
+ rtp_parse_addr_list(h, buf, &s->ssm_include_addrs, &s->nb_ssm_include_addrs);
+ }
+ if (av_find_info_tag(buf, sizeof(buf), "block", p)) {
+ av_strlcpy(exclude_sources, buf, sizeof(exclude_sources));
+ rtp_parse_addr_list(h, buf, &s->ssm_exclude_addrs, &s->nb_ssm_exclude_addrs);
+ }
}
build_udp_url(buf, sizeof(buf),
hostname, rtp_port, local_rtp_port, ttl, max_packet_size,
- connect);
- if (ffurl_open(&s->rtp_hd, buf, flags) < 0)
+ connect, include_sources, exclude_sources);
+ if (ffurl_open(&s->rtp_hd, buf, flags, &h->interrupt_callback, NULL) < 0)
goto fail;
if (local_rtp_port>=0 && local_rtcp_port<0)
local_rtcp_port = ff_udp_get_local_port(s->rtp_hd) + 1;
build_udp_url(buf, sizeof(buf),
hostname, rtcp_port, local_rtcp_port, ttl, max_packet_size,
- connect);
- if (ffurl_open(&s->rtcp_hd, buf, flags) < 0)
+ connect, include_sources, exclude_sources);
+ if (ffurl_open(&s->rtcp_hd, buf, flags, &h->interrupt_callback, NULL) < 0)
goto fail;
/* just to ease handle access. XXX: need to suppress direct handle
ffurl_close(s->rtp_hd);
if (s->rtcp_hd)
ffurl_close(s->rtcp_hd);
- av_free(s);
return AVERROR(EIO);
}
RTPContext *s = h->priv_data;
struct sockaddr_storage from;
socklen_t from_len;
- int len, n;
+ int len, n, i;
struct pollfd p[2] = {{s->rtp_fd, POLLIN, 0}, {s->rtcp_fd, POLLIN, 0}};
+ int poll_delay = h->flags & AVIO_FLAG_NONBLOCK ? 0 : 100;
-#if 0
for(;;) {
- from_len = sizeof(from);
- len = recvfrom (s->rtp_fd, buf, size, 0,
- (struct sockaddr *)&from, &from_len);
- if (len < 0) {
- if (ff_neterrno() == AVERROR(EAGAIN) ||
- ff_neterrno() == AVERROR(EINTR))
- continue;
- return AVERROR(EIO);
- }
- break;
- }
-#else
- for(;;) {
- if (url_interrupt_cb())
+ if (ff_check_interrupt(&h->interrupt_callback))
return AVERROR_EXIT;
- /* build fdset to listen to RTP and RTCP packets */
- n = poll(p, 2, 100);
+ n = poll(p, 2, poll_delay);
if (n > 0) {
- /* first try RTCP */
- if (p[1].revents & POLLIN) {
- from_len = sizeof(from);
- len = recvfrom (s->rtcp_fd, buf, size, 0,
- (struct sockaddr *)&from, &from_len);
- if (len < 0) {
- if (ff_neterrno() == AVERROR(EAGAIN) ||
- ff_neterrno() == AVERROR(EINTR))
- continue;
- return AVERROR(EIO);
- }
- break;
- }
- /* then RTP */
- if (p[0].revents & POLLIN) {
+ /* first try RTCP, then RTP */
+ for (i = 1; i >= 0; i--) {
+ if (!(p[i].revents & POLLIN))
+ continue;
from_len = sizeof(from);
- len = recvfrom (s->rtp_fd, buf, size, 0,
+ len = recvfrom(p[i].fd, buf, size, 0,
(struct sockaddr *)&from, &from_len);
if (len < 0) {
if (ff_neterrno() == AVERROR(EAGAIN) ||
continue;
return AVERROR(EIO);
}
- break;
+ if (rtp_check_source_lists(s, &from))
+ continue;
+ return len;
}
} else if (n < 0) {
if (ff_neterrno() == AVERROR(EINTR))
continue;
return AVERROR(EIO);
}
+ if (h->flags & AVIO_FLAG_NONBLOCK)
+ return AVERROR(EAGAIN);
}
-#endif
return len;
}
int ret;
URLContext *hd;
- if (buf[1] >= RTCP_SR && buf[1] <= RTCP_APP) {
+ if (size < 2)
+ return AVERROR(EINVAL);
+
+ if (RTP_PT_IS_RTCP(buf[1])) {
/* RTCP payload type */
hd = s->rtcp_hd;
} else {
}
ret = ffurl_write(hd, buf, size);
-#if 0
- {
- struct timespec ts;
- ts.tv_sec = 0;
- ts.tv_nsec = 10 * 1000000;
- nanosleep(&ts, NULL);
- }
-#endif
return ret;
}
static int rtp_close(URLContext *h)
{
RTPContext *s = h->priv_data;
+ int i;
+
+ for (i = 0; i < s->nb_ssm_include_addrs; i++)
+ av_free(s->ssm_include_addrs[i]);
+ av_freep(&s->ssm_include_addrs);
+ for (i = 0; i < s->nb_ssm_exclude_addrs; i++)
+ av_free(s->ssm_exclude_addrs[i]);
+ av_freep(&s->ssm_exclude_addrs);
ffurl_close(s->rtp_hd);
ffurl_close(s->rtcp_hd);
- av_free(s);
return 0;
}
* @return the local port number
*/
-int rtp_get_local_rtp_port(URLContext *h)
+int ff_rtp_get_local_rtp_port(URLContext *h)
{
RTPContext *s = h->priv_data;
return ff_udp_get_local_port(s->rtp_hd);
* @return the local port number
*/
-int rtp_get_local_rtcp_port(URLContext *h)
+int ff_rtp_get_local_rtcp_port(URLContext *h)
{
RTPContext *s = h->priv_data;
return ff_udp_get_local_port(s->rtcp_hd);
return s->rtp_fd;
}
-int rtp_get_rtcp_file_handle(URLContext *h) {
+static int rtp_get_multi_file_handle(URLContext *h, int **handles,
+ int *numhandles)
+{
RTPContext *s = h->priv_data;
- return s->rtcp_fd;
+ int *hs = *handles = av_malloc(sizeof(**handles) * 2);
+ if (!hs)
+ return AVERROR(ENOMEM);
+ hs[0] = s->rtp_fd;
+ hs[1] = s->rtcp_fd;
+ *numhandles = 2;
+ return 0;
}
URLProtocol ff_rtp_protocol = {
- .name = "rtp",
- .url_open = rtp_open,
- .url_read = rtp_read,
- .url_write = rtp_write,
- .url_close = rtp_close,
- .url_get_file_handle = rtp_get_file_handle,
+ .name = "rtp",
+ .url_open = rtp_open,
+ .url_read = rtp_read,
+ .url_write = rtp_write,
+ .url_close = rtp_close,
+ .url_get_file_handle = rtp_get_file_handle,
+ .url_get_multi_file_handle = rtp_get_multi_file_handle,
+ .priv_data_size = sizeof(RTPContext),
+ .flags = URL_PROTOCOL_FLAG_NETWORK,
};
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