server.c revision 31962
1193326Sed/*- 2193326Sed * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org> 3193326Sed * All rights reserved. 4193326Sed * 5193326Sed * Redistribution and use in source and binary forms, with or without 6193326Sed * modification, are permitted provided that the following conditions 7193326Sed * are met: 8193326Sed * 1. Redistributions of source code must retain the above copyright 9193326Sed * notice, this list of conditions and the following disclaimer. 10193326Sed * 2. Redistributions in binary form must reproduce the above copyright 11193326Sed * notice, this list of conditions and the following disclaimer in the 12193326Sed * documentation and/or other materials provided with the distribution. 13193326Sed * 14193326Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15193326Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16202379Srdivacky * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17198092Srdivacky * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18203955Srdivacky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19199482Srdivacky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20193326Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21193326Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22203955Srdivacky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23193326Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24193326Sed * SUCH DAMAGE. 25193326Sed * 26198092Srdivacky * $Id: server.c,v 1.14 1997/12/21 12:11:08 brian Exp $ 27193326Sed */ 28193326Sed 29204643Srdivacky#include <sys/param.h> 30204643Srdivacky#include <sys/socket.h> 31204643Srdivacky#include <netinet/in.h> 32204643Srdivacky#include <arpa/inet.h> 33204643Srdivacky#include <netinet/in_systm.h> 34204643Srdivacky#include <netinet/ip.h> 35204643Srdivacky 36204643Srdivacky#include <errno.h> 37204643Srdivacky#include <stdio.h> 38204643Srdivacky#include <string.h> 39204643Srdivacky#include <sys/stat.h> 40204643Srdivacky#include <sys/un.h> 41193326Sed#include <unistd.h> 42193326Sed 43198092Srdivacky#include "command.h" 44193326Sed#include "mbuf.h" 45193326Sed#include "log.h" 46193326Sed#include "loadalias.h" 47198092Srdivacky#include "defs.h" 48193326Sed#include "vars.h" 49193326Sed#include "server.h" 50193326Sed#include "id.h" 51193326Sed 52193326Sedint server = -1; 53193326Sed 54193326Sedstatic struct sockaddr_un ifsun; 55198092Srdivackystatic char *rm; 56193326Sed 57200583Srdivackyint 58198893SrdivackyServerLocalOpen(const char *name, mode_t mask) 59193326Sed{ 60200583Srdivacky int s; 61193326Sed 62193326Sed if (VarLocalAuth == LOCAL_DENY) { 63193326Sed LogPrintf(LogERROR, "Local: Can't open socket %s: No password " 64200583Srdivacky "in ppp.secret\n", name); 65198893Srdivacky return 1; 66200583Srdivacky } 67193326Sed 68193326Sed if (mode & MODE_INTER) { 69193326Sed LogPrintf(LogERROR, "Local: Can't open socket in interactive mode\n"); 70200583Srdivacky return 1; 71193326Sed } 72198092Srdivacky 73198092Srdivacky memset(&ifsun, '\0', sizeof ifsun); 74193326Sed ifsun.sun_len = strlen(name); 75198092Srdivacky if (ifsun.sun_len > sizeof ifsun.sun_path - 1) { 76194613Sed LogPrintf(LogERROR, "Local: %s: Path too long\n", name); 77193326Sed return 2; 78199990Srdivacky } 79199990Srdivacky ifsun.sun_family = AF_LOCAL; 80200583Srdivacky strcpy(ifsun.sun_path, name); 81198893Srdivacky 82198893Srdivacky s = ID0socket(PF_LOCAL, SOCK_STREAM, 0); 83198893Srdivacky if (s < 0) { 84193326Sed LogPrintf(LogERROR, "Local: socket: %s\n", strerror(errno)); 85193326Sed return 3; 86199990Srdivacky } 87193326Sed setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &s, sizeof s); 88193326Sed if (mask != (mode_t)-1) 89193326Sed mask = umask(mask); 90193326Sed if (bind(s, (struct sockaddr *)&ifsun, sizeof ifsun) < 0) { 91193326Sed if (mask != (mode_t)-1) 92193326Sed umask(mask); 93198092Srdivacky LogPrintf(LogERROR, "Local: bind: %s\n", strerror(errno)); 94193326Sed if (errno == EADDRINUSE && VarTerm) 95193326Sed fprintf(VarTerm, "Wait for a while, then try again.\n"); 96199512Srdivacky close(s); 97193326Sed return 4; 98198092Srdivacky } 99193326Sed if (mask != (mode_t)-1) 100198893Srdivacky umask(mask); 101200583Srdivacky if (listen(s, 5) != 0) { 102198893Srdivacky LogPrintf(LogERROR, "Local: Unable to listen to socket - OS overload?\n"); 103198893Srdivacky close(s); 104198893Srdivacky ID0unlink(name); 105193326Sed return 5; 106193326Sed } 107198092Srdivacky ServerClose(); 108193326Sed server = s; 109198092Srdivacky rm = ifsun.sun_path; 110198092Srdivacky LogPrintf(LogPHASE, "Listening at local socket %s.\n", name); 111198893Srdivacky return 0; 112198893Srdivacky} 113200583Srdivacky 114198893Srdivackyint 115198893SrdivackyServerTcpOpen(int port) 116198893Srdivacky{ 117198092Srdivacky struct sockaddr_in ifsin; 118198092Srdivacky int s; 119198092Srdivacky 120198092Srdivacky if (VarLocalAuth == LOCAL_DENY) { 121193326Sed LogPrintf(LogERROR, "Tcp: Can't open socket %d: No password " 122193326Sed "in ppp.secret\n", port); 123193326Sed return 6; 124199482Srdivacky } 125199482Srdivacky 126202379Srdivacky if (mode & MODE_INTER) { 127202379Srdivacky LogPrintf(LogERROR, "Tcp: Can't open socket in interactive mode\n"); 128198092Srdivacky return 6; 129199482Srdivacky } 130204643Srdivacky 131198092Srdivacky s = ID0socket(PF_INET, SOCK_STREAM, 0); 132199990Srdivacky if (s < 0) { 133193326Sed LogPrintf(LogERROR, "Tcp: socket: %s\n", strerror(errno)); 134199482Srdivacky return 7; 135206084Srdivacky } 136206084Srdivacky memset(&ifsin, '\0', sizeof ifsin); 137199482Srdivacky ifsin.sin_family = AF_INET; 138193326Sed ifsin.sin_addr.s_addr = INADDR_ANY; 139193326Sed ifsin.sin_port = htons(port); 140193326Sed setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &s, sizeof s); 141198092Srdivacky if (bind(s, (struct sockaddr *)&ifsin, sizeof ifsin) < 0) { 142193326Sed LogPrintf(LogERROR, "Tcp: bind: %s\n", strerror(errno)); 143203955Srdivacky if (errno == EADDRINUSE && VarTerm) 144203955Srdivacky fprintf(VarTerm, "Wait for a while, then try again.\n"); 145199990Srdivacky close(s); 146199990Srdivacky return 8; 147199990Srdivacky } 148193326Sed if (listen(s, 5) != 0) { 149193326Sed LogPrintf(LogERROR, "Tcp: Unable to listen to socket - OS overload?\n"); 150202379Srdivacky close(s); 151202379Srdivacky return 9; 152202379Srdivacky } 153204643Srdivacky ServerClose(); 154204643Srdivacky server = s; 155199482Srdivacky LogPrintf(LogPHASE, "Listening at port %d.\n", port); 156199482Srdivacky return 0; 157198092Srdivacky} 158193326Sed 159193326Sedvoid 160198092SrdivackyServerClose() 161207619Srdivacky{ 162207619Srdivacky if (server >= 0) { 163193326Sed close(server); 164193326Sed if (rm) { 165198092Srdivacky ID0unlink(rm); 166193326Sed rm = 0; 167193326Sed } 168198092Srdivacky } 169199482Srdivacky server = -1; 170199482Srdivacky} 171199482Srdivacky