/* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * All rights reserved. * * This code is derived from software donated to Berkeley by * Jan-Simon Pendry. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)pt_tcp.c 8.3 (Berkeley) 3/27/94 * * $Id: pt_tcp.c,v 1.1.1.1 1994/05/26 06:34:34 rgrimes Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include "portald.h" /* * Key will be tcp/host/port[/"priv"] * Create a TCP socket connected to the * requested host and port. * Some trailing suffix values have special meanings. * An unrecognised suffix is an error. */ int portal_tcp(pcr, key, v, kso, fdp) struct portal_cred *pcr; char *key; char **v; int kso; int *fdp; { char host[MAXHOSTNAMELEN]; char port[MAXHOSTNAMELEN]; char *p = key + (v[1] ? strlen(v[1]) : 0); char *q; struct hostent *hp; struct servent *sp; struct in_addr **ipp; struct in_addr *ip[2]; struct in_addr ina; u_short s_port; int priv = 0; struct sockaddr_in sain; q = strchr(p, '/'); if (q == 0 || q - p >= sizeof(host)) return (EINVAL); *q = '\0'; strcpy(host, p); p = q + 1; q = strchr(p, '/'); if (q) *q = '\0'; if (strlen(p) >= sizeof(port)) return (EINVAL); strcpy(port, p); if (q) { p = q + 1; if (strcmp(p, "priv") == 0) { if (pcr->pcr_uid == 0) priv = 1; else return (EPERM); } else { return (EINVAL); } } hp = gethostbyname(host); if (hp != 0) { ipp = (struct in_addr **) hp->h_addr_list; } else { ina.s_addr = inet_addr(host); if (ina.s_addr == INADDR_NONE) return (EINVAL); ip[0] = &ina; ip[1] = 0; ipp = ip; } #ifdef DEBUG printf ("inet address for %s is %s\n", host, inet_ntoa(*ipp[0])); #endif sp = getservbyname(port, "tcp"); if (sp != NULL) s_port = (u_short)sp->s_port; else { s_port = htons ((u_short)strtol (port, (char**)NULL, 10)); if (s_port == 0) return (EINVAL); } #ifdef DEBUG printf ("port number for %s is %d\n", port, s_port); #endif bzero(&sain, sizeof(sain)); sain.sin_len = sizeof(sain); sain.sin_family = AF_INET; sain.sin_port = s_port; while (ipp[0]) { int so; if (priv) so = rresvport((int *) 0); else so = socket(AF_INET, SOCK_STREAM, 0); if (so < 0) { syslog(LOG_ERR, "socket: %m"); return (errno); } sain.sin_addr = *ipp[0]; if (connect(so, (struct sockaddr *) &sain, sizeof(sain)) == 0) { *fdp = so; return (0); } (void) close(so); ipp++; } return (errno); }