vlc_tls_t *vlc_tls_ClientSessionCreate (vlc_tls_creds_t *crd, int fd,
const char *host, const char *service,
const char *const *alpn, char **alp)
{
vlc_tls_t *session;
int canc, val;
canc = vlc_savecancel();
session = vlc_tls_SessionCreate (crd, fd, host, alpn);
if (session == NULL)
{
vlc_restorecancel(canc);
return NULL;
}
mtime_t deadline = mdate ();
deadline += var_InheritInteger (crd, "ipv4-timeout") * 1000;
struct pollfd ufd[1];
ufd[0].fd = fd;
vlc_cleanup_push (cleanup_tls, session);
while ((val = crd->handshake(crd, session, host, service, alp)) != 0)
{
if (val < 0)
{
msg_Err(crd, "TLS session handshake error");
error:
vlc_tls_SessionDelete (session);
session = NULL;
break;
}
mtime_t now = mdate ();
if (now > deadline)
now = deadline;
assert (val <= 2);
ufd[0] .events = (val == 1) ? POLLIN : POLLOUT;
vlc_restorecancel(canc);
val = poll (ufd, 1, (deadline - now) / 1000);
canc = vlc_savecancel();
if (val == 0)
{
msg_Err(crd, "TLS session handshake timeout");
goto error;
}
}
vlc_cleanup_pop();
vlc_restorecancel(canc);
return session;
}
/**
* Performs client side of TLS handshake through a connected socket, and
* establishes a secure channel. This is a blocking network operation.
*
* @param fd socket through which to establish the secure channel
* @param hostname expected server name, used both as Server Name Indication
* and as expected Common Name of the peer certificate
*
* @return NULL on error.
**/
vlc_tls_t *vlc_tls_ClientSessionCreate (vlc_tls_creds_t *crd, int fd,
const char *host, const char *service)
{
vlc_tls_t *session = vlc_tls_SessionCreate (crd, fd, host);
if (session == NULL)
return NULL;
mtime_t deadline = mdate ();
deadline += var_InheritInteger (crd, "ipv4-timeout") * 1000;
struct pollfd ufd[1];
ufd[0].fd = fd;
int val;
while ((val = vlc_tls_SessionHandshake (session, host, service)) > 0)
{
mtime_t now = mdate ();
if (now > deadline)
now = deadline;
assert (val <= 2);
ufd[0] .events = (val == 1) ? POLLIN : POLLOUT;
if (poll (ufd, 1, (deadline - now) / 1000) == 0)
{
msg_Err (session, "TLS client session handshake timeout");
val = -1;
break;
}
}
while (val > 0);
if (val != 0)
{
msg_Err (session, "TLS client session handshake error");
vlc_tls_SessionDelete (session);
session = NULL;
}
return session;
}
