1 /* 2 * Copyright (c) 2000 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifdef HAVE_CONFIG_H 35 #include <config.h> 36 RCSID("$Id: getaddrinfo_hostspec.c,v 1.3 2000/07/15 12:50:32 joda Exp $"); 37 #endif 38 39 #include "roken.h" 40 41 /* getaddrinfo via string specifying host and port */ 42 43 int 44 roken_getaddrinfo_hostspec2(const char *hostspec, 45 int socktype, 46 int port, 47 struct addrinfo **ai) 48 { 49 const char *p; 50 char portstr[NI_MAXSERV]; 51 char host[MAXHOSTNAMELEN]; 52 struct addrinfo hints; 53 int hostspec_len; 54 55 struct hst { 56 const char *prefix; 57 int socktype; 58 int protocol; 59 int port; 60 } *hstp, hst[] = { 61 { "http://", SOCK_STREAM, IPPROTO_TCP, 80 }, 62 { "http/", SOCK_STREAM, IPPROTO_TCP, 80 }, 63 { "tcp/", SOCK_STREAM, IPPROTO_TCP }, 64 { "udp/", SOCK_DGRAM, IPPROTO_UDP }, 65 { NULL } 66 }; 67 68 memset(&hints, 0, sizeof(hints)); 69 70 hints.ai_socktype = socktype; 71 72 for(hstp = hst; hstp->prefix; hstp++) { 73 if(strncmp(hostspec, hstp->prefix, strlen(hstp->prefix)) == 0) { 74 hints.ai_socktype = hstp->socktype; 75 hints.ai_protocol = hstp->protocol; 76 if(port == 0) 77 port = hstp->port; 78 hostspec += strlen(hstp->prefix); 79 break; 80 } 81 } 82 83 p = strchr (hostspec, ':'); 84 if (p != NULL) { 85 char *end; 86 87 port = strtol (p + 1, &end, 0); 88 hostspec_len = p - hostspec; 89 } else { 90 hostspec_len = strlen(hostspec); 91 } 92 snprintf (portstr, sizeof(portstr), "%u", port); 93 94 snprintf (host, sizeof(host), "%.*s", hostspec_len, hostspec); 95 return getaddrinfo (host, portstr, &hints, ai); 96 } 97 98 int 99 roken_getaddrinfo_hostspec(const char *hostspec, 100 int port, 101 struct addrinfo **ai) 102 { 103 return roken_getaddrinfo_hostspec2(hostspec, 0, port, ai); 104 } 105