getaddrinfo via string specifying host and port

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@7899 ec53bebd-3082-4978-b11e-865c3cabbd6b
2000-02-07 13:38:22 +00:00
parent ba912b7548
commit 5403dddf67
1 changed files with 89 additions and 0 deletions
--- a/lib/roken/getaddrinfo_hostspec.c
+++ b/lib/roken/getaddrinfo_hostspec.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2000 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+RCSID("$Id$");
+#endif
+
+#include "roken.h"
+
+/* getaddrinfo via string specifying host and port */
+
+int
+roken_getaddrinfo_hostspec(const char *hostspec, 
+			   int port,
+			   struct addrinfo **ai)
+{
+    const char *p;
+    char portstr[NI_MAXSERV];
+    char host[MAXHOSTNAMELEN];
+    struct addrinfo hints;
+
+    struct hst {
+	const char *prefix;
+	int socktype;
+	int protocol;
+	int port;
+    } *hstp, hst[] = {
+	{ "http://", SOCK_STREAM, IPPROTO_TCP, 80 },
+	{ "http/", SOCK_STREAM, IPPROTO_TCP, 80 },
+	{ "tcp/", SOCK_STREAM, IPPROTO_TCP },
+	{ "udp/", SOCK_DGRAM, IPPROTO_UDP },
+	{ NULL }
+    };
+
+    memset(&hints, 0, sizeof(hints));
+	
+    for(hstp = hst; hstp->prefix; hstp++) {
+	if(strncmp(hostspec, hstp->prefix, strlen(hstp->prefix)) == 0) {
+	    hints.ai_socktype = hstp->socktype;
+	    hints.ai_protocol = hstp->protocol;
+	    if(port == 0)
+		port = hstp->port;
+	    hostspec += strlen(hstp->prefix);
+	    break;
+	}
+    }
+    
+    p = strchr (hostspec, ':');
+    if (p != NULL) {
+	char *end;
+
+	port = strtol (p + 1, &end, 0);
+    }
+    snprintf (portstr, sizeof(portstr), "%u", port);
+    
+    snprintf (host, sizeof(host), "%.*s", p - hostspec, hostspec);
+    return getaddrinfo (host, portstr, &hints, ai);
+}