- ling.l_onoff=1;
- ling.l_linger=0;
- i=setsockopt(ret,SOL_SOCKET,SO_LINGER,(char *)&ling,sizeof(ling));
- if (i < 0) { perror("linger"); return(0); }
- i=0;
- i=setsockopt(ret,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
- if (i < 0) { perror("keepalive"); return(0); }
-*/
-
- if (host == NULL) goto end;
-#ifndef BIT_FIELD_LIMITS
- /* I should use WSAAsyncGetHostByName() under windows */
- h1=gethostbyaddr((char *)&from.sin_addr.s_addr,
- sizeof(from.sin_addr.s_addr),AF_INET);
-#else
- h1=gethostbyaddr((char *)&from.sin_addr,
- sizeof(struct in_addr),AF_INET);
+ * do_server - helper routine to perform a server operation
+ * @accept_sock: pointer to storage of resulting socket.
+ * @host: the host name or path (for AF_UNIX) to connect to.
+ * @port: the port to connect to (ignored for AF_UNIX).
+ * @family: desired socket family, may be AF_INET, AF_INET6, AF_UNIX or
+ * AF_UNSPEC
+ * @type: socket type, must be SOCK_STREAM or SOCK_DGRAM
+ * @cb: pointer to a function that receives the accepted socket and
+ * should perform the communication with the connecting client.
+ * @context: pointer to memory that's passed verbatim to the cb function.
+ * @naccept: number of times an incoming connect should be accepted. If -1,
+ * unlimited number.
+ *
+ * This will create a socket and use it to listen to a host:port, or if
+ * family == AF_UNIX, to the path found in host, then start accepting
+ * incoming connections and run cb on the resulting socket.
+ *
+ * 0 on failure, something other on success.
+ */
+int do_server(int *accept_sock, const char *host, const char *port,
+ int family, int type, int protocol, do_server_cb cb,
+ unsigned char *context, int naccept, BIO *bio_s_out)
+{
+ int asock = 0;
+ int sock;
+ int i;
+ BIO_ADDRINFO *res = NULL;
+ const BIO_ADDRINFO *next;
+ int sock_family, sock_type, sock_protocol, sock_port;
+ const BIO_ADDR *sock_address;
+ int sock_options = BIO_SOCK_REUSEADDR;
+ int ret = 0;
+
+ if (BIO_sock_init() != 1)
+ return 0;
+
+ if (!BIO_lookup_ex(host, port, BIO_LOOKUP_SERVER, family, type, protocol,
+ &res)) {
+ ERR_print_errors(bio_err);
+ return 0;
+ }
+
+ /* Admittedly, these checks are quite paranoid, we should not get
+ * anything in the BIO_ADDRINFO chain that we haven't asked for */
+ OPENSSL_assert((family == AF_UNSPEC || family == BIO_ADDRINFO_family(res))
+ && (type == 0 || type == BIO_ADDRINFO_socktype(res))
+ && (protocol == 0 || protocol == BIO_ADDRINFO_protocol(res)));
+
+ sock_family = BIO_ADDRINFO_family(res);
+ sock_type = BIO_ADDRINFO_socktype(res);
+ sock_protocol = BIO_ADDRINFO_protocol(res);
+ sock_address = BIO_ADDRINFO_address(res);
+ next = BIO_ADDRINFO_next(res);
+ if (sock_family == AF_INET6)
+ sock_options |= BIO_SOCK_V6_ONLY;
+ if (next != NULL
+ && BIO_ADDRINFO_socktype(next) == sock_type
+ && BIO_ADDRINFO_protocol(next) == sock_protocol) {
+ if (sock_family == AF_INET
+ && BIO_ADDRINFO_family(next) == AF_INET6) {
+ sock_family = AF_INET6;
+ sock_address = BIO_ADDRINFO_address(next);
+ } else if (sock_family == AF_INET6
+ && BIO_ADDRINFO_family(next) == AF_INET) {
+ sock_options &= ~BIO_SOCK_V6_ONLY;
+ }
+ }
+
+ asock = BIO_socket(sock_family, sock_type, sock_protocol, 0);
+ if (asock == INVALID_SOCKET
+ || !BIO_listen(asock, sock_address, sock_options)) {
+ BIO_ADDRINFO_free(res);
+ ERR_print_errors(bio_err);
+ if (asock != INVALID_SOCKET)
+ BIO_closesocket(asock);
+ goto end;
+ }
+
+#ifndef OPENSSL_NO_SCTP
+ if (protocol == IPPROTO_SCTP) {
+ /*
+ * For SCTP we have to set various options on the socket prior to
+ * accepting. This is done automatically by BIO_new_dgram_sctp().
+ * We don't actually need the created BIO though so we free it again
+ * immediately.
+ */
+ BIO *tmpbio = BIO_new_dgram_sctp(asock, BIO_NOCLOSE);
+
+ if (tmpbio == NULL) {
+ BIO_closesocket(asock);
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ BIO_free(tmpbio);
+ }