+static int ff_poll_interrupt(struct pollfd *p, nfds_t nfds, int timeout,
+ AVIOInterruptCB *cb)
+{
+ int runs = timeout / POLLING_TIME;
+ int ret = 0;
+
+ do {
+ if (ff_check_interrupt(cb))
+ return AVERROR_EXIT;
+ ret = poll(p, nfds, POLLING_TIME);
+ if (ret != 0)
+ break;
+ } while (timeout < 0 || runs-- > 0);
+
+ if (!ret)
+ return AVERROR(ETIMEDOUT);
+ if (ret < 0)
+ return AVERROR(errno);
+ return ret;
+}
+
+int ff_socket(int af, int type, int proto)
+{
+ int fd;
+
+#ifdef SOCK_CLOEXEC
+ fd = socket(af, type | SOCK_CLOEXEC, proto);
+ if (fd == -1 && errno == EINVAL)
+#endif
+ {
+ fd = socket(af, type, proto);
+#if HAVE_FCNTL
+ if (fd != -1)
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+#endif
+ }
+ return fd;
+}
+
+int ff_listen_bind(int fd, const struct sockaddr *addr,
+ socklen_t addrlen, int timeout, URLContext *h)
+{
+ int ret;
+ int reuse = 1;
+ struct pollfd lp = { fd, POLLIN, 0 };
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse));
+ ret = bind(fd, addr, addrlen);
+ if (ret)
+ return ff_neterrno();
+
+ ret = listen(fd, 1);
+ if (ret)
+ return ff_neterrno();
+
+ ret = ff_poll_interrupt(&lp, 1, timeout, &h->interrupt_callback);
+ if (ret < 0)
+ return ret;
+
+ ret = accept(fd, NULL, NULL);
+ if (ret < 0)
+ return ff_neterrno();
+
+ closesocket(fd);
+
+ ff_socket_nonblock(ret, 1);
+ return ret;
+}
+
+int ff_listen_connect(int fd, const struct sockaddr *addr,
+ socklen_t addrlen, int timeout, URLContext *h,
+ int will_try_next)
+{
+ struct pollfd p = {fd, POLLOUT, 0};
+ int ret;
+ socklen_t optlen;
+
+ ff_socket_nonblock(fd, 1);
+
+ while ((ret = connect(fd, addr, addrlen))) {
+ ret = ff_neterrno();
+ switch (ret) {
+ case AVERROR(EINTR):
+ if (ff_check_interrupt(&h->interrupt_callback))
+ return AVERROR_EXIT;
+ continue;
+ case AVERROR(EINPROGRESS):
+ case AVERROR(EAGAIN):
+ ret = ff_poll_interrupt(&p, 1, timeout, &h->interrupt_callback);
+ if (ret < 0)
+ return ret;
+ optlen = sizeof(ret);
+ if (getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen))
+ ret = AVUNERROR(ff_neterrno());
+ if (ret != 0) {
+ char errbuf[100];
+ ret = AVERROR(ret);
+ av_strerror(ret, errbuf, sizeof(errbuf));
+ if (will_try_next)
+ av_log(h, AV_LOG_WARNING,
+ "Connection to %s failed (%s), trying next address\n",
+ h->filename, errbuf);
+ else
+ av_log(h, AV_LOG_ERROR, "Connection to %s failed: %s\n",
+ h->filename, errbuf);
+ }
+ default:
+ return ret;
+ }
+ }
+ return ret;
+}
+
+static int match_host_pattern(const char *pattern, const char *hostname)
+{
+ int len_p, len_h;
+ if (!strcmp(pattern, "*"))
+ return 1;
+ // Skip a possible *. at the start of the pattern
+ if (pattern[0] == '*')
+ pattern++;
+ if (pattern[0] == '.')
+ pattern++;
+ len_p = strlen(pattern);
+ len_h = strlen(hostname);
+ if (len_p > len_h)
+ return 0;
+ // Simply check if the end of hostname is equal to 'pattern'
+ if (!strcmp(pattern, &hostname[len_h - len_p])) {
+ if (len_h == len_p)
+ return 1; // Exact match
+ if (hostname[len_h - len_p - 1] == '.')
+ return 1; // The matched substring is a domain and not just a substring of a domain
+ }
+ return 0;
+}
+
+int ff_http_match_no_proxy(const char *no_proxy, const char *hostname)
+{
+ char *buf, *start;
+ int ret = 0;
+ if (!no_proxy)
+ return 0;
+ if (!hostname)
+ return 0;
+ buf = av_strdup(no_proxy);
+ if (!buf)
+ return 0;
+ start = buf;
+ while (start) {
+ char *sep, *next = NULL;
+ start += strspn(start, " ,");
+ sep = start + strcspn(start, " ,");
+ if (*sep) {
+ next = sep + 1;
+ *sep = '\0';
+ }
+ if (match_host_pattern(start, hostname)) {
+ ret = 1;
+ break;
+ }
+ start = next;
+ }
+ av_free(buf);
+ return ret;
+}