static int gopher_open(URLContext *h, const char *uri, int flags)
{
GopherContext *s;
char hostname[1024], auth[1024], path[1024], buf[1024];
int port, err;
h->is_streamed = 1;
s = av_malloc(sizeof(GopherContext));
if (!s) {
return AVERROR(ENOMEM);
}
h->priv_data = s;
/* needed in any case to build the host string */
ff_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
path, sizeof(path), uri);
if (port < 0)
port = 70;
ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
s->hd = NULL;
err = url_open(&s->hd, buf, URL_RDWR);
if (err < 0)
goto fail;
if ((err = gopher_connect(h, path)) < 0)
goto fail;
return 0;
fail:
gopher_close(h);
return err;
}
static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
{
int port;
const char *p;
char proto[32];
ff_url_split(proto, sizeof(proto), NULL, 0, dest_addr, size, &port, NULL, 0, url);
*ttl = 0;
if (strcmp(proto, "rtp")) {
/* The url isn't for the actual rtp sessions,
* don't parse out anything else than the destination.
*/
return 0;
}
p = strchr(url, '?');
if (p) {
char buff[64];
int is_multicast = find_info_tag(buff, sizeof(buff), "multicast", p);
if (is_multicast) {
if (find_info_tag(buff, sizeof(buff), "ttl", p)) {
*ttl = strtol(buff, NULL, 10);
} else {
*ttl = 5;
}
}
}
return port;
}
/**
* If no filename is given to av_open_input_file because you want to
* get the local port first, then you must call this function to set
* the remote server address.
*
* url syntax: udp://host:port[?option=val...]
* option: 'ttl=n' : set the ttl value (for multicast only)
* 'localport=n' : set the local port
* 'pkt_size=n' : set max packet size
* 'reuse=1' : enable reusing the socket
*
* @param s1 media file context
* @param uri of the remote server
* @return zero if no error.
*/
int udp_set_remote_url(URLContext *h, const char *uri)
{
UDPContext *s = h->priv_data;
char hostname[256];
int port;
ff_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
/* set the destination address */
s->dest_addr_len = udp_set_url(&s->dest_addr, hostname, port);
if (s->dest_addr_len < 0) {
return AVERROR(EIO);
}
s->is_multicast = is_multicast_address(&s->dest_addr);
return 0;
}
/* return non zero if error */
static int tcp_open(URLContext *h, const char *uri, int flags)
{
struct addrinfo hints, *ai, *cur_ai;
int port, fd = -1;
TCPContext *s = NULL;
fd_set wfds;
int fd_max, ret;
struct timeval tv;
socklen_t optlen;
char hostname[1024],proto[1024],path[1024];
char portstr[10];
ff_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
&port, path, sizeof(path), uri);
if (strcmp(proto,"tcp") || port <= 0 || port >= 65536)
return AVERROR(EINVAL);
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
snprintf(portstr, sizeof(portstr), "%d", port);
if (getaddrinfo(hostname, portstr, &hints, &ai))
return AVERROR(EIO);
cur_ai = ai;
restart:
fd = socket(cur_ai->ai_family, cur_ai->ai_socktype, cur_ai->ai_protocol);
if (fd < 0)
goto fail;
ff_socket_nonblock(fd, 1);
redo:
ret = connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
if (ret < 0) {
if (ff_neterrno() == FF_NETERROR(EINTR))
goto redo;
if (ff_neterrno() != FF_NETERROR(EINPROGRESS) &&
ff_neterrno() != FF_NETERROR(EAGAIN))
goto fail;
/* wait until we are connected or until abort */
for(;;) {
if (url_interrupt_cb()) {
ret = AVERROR(EINTR);
goto fail1;
}
fd_max = fd;
FD_ZERO(&wfds);
FD_SET(fd, &wfds);
tv.tv_sec = 0;
tv.tv_usec = 100 * 1000;
ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
if (ret > 0 && FD_ISSET(fd, &wfds))
break;
}
/* test error */
optlen = sizeof(ret);
getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
if (ret != 0)
goto fail;
}
s = av_malloc(sizeof(TCPContext));
if (!s) {
freeaddrinfo(ai);
return AVERROR(ENOMEM);
}
h->priv_data = s;
h->is_streamed = 1;
s->fd = fd;
freeaddrinfo(ai);
return 0;
fail:
if (cur_ai->ai_next) {
/* Retry with the next sockaddr */
cur_ai = cur_ai->ai_next;
if (fd >= 0)
closesocket(fd);
goto restart;
}
ret = AVERROR(EIO);
fail1:
if (fd >= 0)
closesocket(fd);
freeaddrinfo(ai);
return ret;
}
/* return non zero if error */
static int udp_open(URLContext *h, const char *uri, int flags)
{
char hostname[1024];
int port, udp_fd = -1, tmp, bind_ret = -1;
UDPContext *s = NULL;
int is_output;
const char *p;
char buf[256];
struct sockaddr_storage my_addr;
int len;
h->is_streamed = 1;
h->max_packet_size = 1472;
is_output = (flags & URL_WRONLY);
s = av_mallocz(sizeof(UDPContext));
if (!s)
return AVERROR(ENOMEM);
h->priv_data = s;
s->ttl = 16;
s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
p = strchr(uri, '?');
if (p) {
s->reuse_socket = find_info_tag(buf, sizeof(buf), "reuse", p);
if (find_info_tag(buf, sizeof(buf), "ttl", p)) {
s->ttl = strtol(buf, NULL, 10);
}
if (find_info_tag(buf, sizeof(buf), "localport", p)) {
s->local_port = strtol(buf, NULL, 10);
}
if (find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
h->max_packet_size = strtol(buf, NULL, 10);
}
if (find_info_tag(buf, sizeof(buf), "buffer_size", p)) {
s->buffer_size = strtol(buf, NULL, 10);
}
}
/* fill the dest addr */
ff_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
/* XXX: fix ff_url_split */
if (hostname[0] == '\0' || hostname[0] == '?') {
/* only accepts null hostname if input */
if (flags & URL_WRONLY)
goto fail;
} else {
udp_set_remote_url(h, uri);
}
if (s->is_multicast && !(h->flags & URL_WRONLY))
s->local_port = port;
udp_fd = udp_socket_create(s, &my_addr, &len);
if (udp_fd < 0)
goto fail;
if (s->reuse_socket)
if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0)
goto fail;
/* the bind is needed to give a port to the socket now */
/* if multicast, try the multicast address bind first */
if (s->is_multicast && !(h->flags & URL_WRONLY)) {
bind_ret = bind(udp_fd,(struct sockaddr *)&s->dest_addr, len);
}
/* bind to the local address if not multicast or if the multicast
* bind failed */
if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0)
goto fail;
len = sizeof(my_addr);
getsockname(udp_fd, (struct sockaddr *)&my_addr, &len);
s->local_port = udp_port(&my_addr, len);
if (s->is_multicast) {
if (h->flags & URL_WRONLY) {
/* output */
if (udp_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr) < 0)
goto fail;
} else {
/* input */
if (udp_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr) < 0)
goto fail;
}
}
if (is_output) {
/* limit the tx buf size to limit latency */
tmp = s->buffer_size;
if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
av_log(NULL, AV_LOG_ERROR, "setsockopt(SO_SNDBUF): %s\n", strerror(errno));
goto fail;
}
} else {
/* set udp recv buffer size to the largest possible udp packet size to
* avoid losing data on OSes that set this too low by default. */
tmp = s->buffer_size;
if (setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) {
av_log(NULL, AV_LOG_WARNING, "setsockopt(SO_RECVBUF): %s\n", strerror(errno));
}
/* make the socket non-blocking */
ff_socket_nonblock(udp_fd, 1);
}
s->udp_fd = udp_fd;
return 0;
fail:
if (udp_fd >= 0)
closesocket(udp_fd);
av_free(s);
return AVERROR(EIO);
}
/* return non zero if error */
static int http_open_cnx(URLContext *h)
{
const char *path, *proxy_path;
char hostname[1024], hoststr[1024];
char auth[1024];
char path1[1024];
char buf[1024];
int port, use_proxy, err, location_changed = 0, redirects = 0;
HTTPAuthType cur_auth_type;
HTTPContext *s = h->priv_data;
URLContext *hd = NULL;
s->init = 1;
proxy_path = getenv("http_proxy");
use_proxy = (proxy_path != NULL) && !getenv("no_proxy") &&
av_strstart(proxy_path, "http://", NULL);
/* fill the dest addr */
redo:
/* needed in any case to build the host string */
ff_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
path1, sizeof(path1), s->location);
ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
if (use_proxy) {
ff_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
NULL, 0, proxy_path);
path = s->location;
} else {
if (path1[0] == '\0')
path = "/";
else
path = path1;
}
if (port < 0)
port = 80;
ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
err = url_open(&hd, buf, URL_RDWR);
if (err < 0)
goto fail;
s->hd = hd;
cur_auth_type = s->auth_state.auth_type;
if (http_connect(h, path, hoststr, auth, &location_changed) < 0)
goto fail;
if (s->http_code == 401) {
if (cur_auth_type == HTTP_AUTH_NONE && s->auth_state.auth_type != HTTP_AUTH_NONE) {
url_close(hd);
goto redo;
} else
goto fail;
}
if ((s->http_code == 302 || s->http_code == 303) && location_changed == 1) {
/* url moved, get next */
url_close(hd);
if (redirects++ >= MAX_REDIRECTS)
return AVERROR(EIO);
location_changed = 0;
goto redo;
}
return 0;
fail:
if (hd)
url_close(hd);
s->hd = NULL;
return AVERROR(EIO);
}
