main.c revision 173340
1/* 2 * Copyright (c) 1999-2003, 2006, 2007 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * 5 * By using this file, you agree to the terms and conditions set 6 * forth in the LICENSE file which can be found at the top level of 7 * the sendmail distribution. 8 * 9 */ 10 11#include <sm/gen.h> 12SM_RCSID("@(#)$Id: main.c,v 8.83 2007/04/23 22:22:50 ca Exp $") 13 14#define _DEFINE 1 15#include "libmilter.h" 16#include <fcntl.h> 17#include <sys/stat.h> 18 19 20static smfiDesc_ptr smfi = NULL; 21 22/* 23** SMFI_REGISTER -- register a filter description 24** 25** Parameters: 26** smfilter -- description of filter to register 27** 28** Returns: 29** MI_SUCCESS/MI_FAILURE 30*/ 31 32int 33smfi_register(smfilter) 34 smfiDesc_str smfilter; 35{ 36 size_t len; 37 38 if (smfi == NULL) 39 { 40 smfi = (smfiDesc_ptr) malloc(sizeof *smfi); 41 if (smfi == NULL) 42 return MI_FAILURE; 43 } 44 (void) memcpy(smfi, &smfilter, sizeof *smfi); 45 if (smfilter.xxfi_name == NULL) 46 smfilter.xxfi_name = "Unknown"; 47 48 len = strlen(smfilter.xxfi_name) + 1; 49 smfi->xxfi_name = (char *) malloc(len); 50 if (smfi->xxfi_name == NULL) 51 return MI_FAILURE; 52 (void) sm_strlcpy(smfi->xxfi_name, smfilter.xxfi_name, len); 53 54 /* compare milter version with hard coded version */ 55 if (smfi->xxfi_version != SMFI_VERSION && 56 smfi->xxfi_version != 2 && 57 smfi->xxfi_version != 3 && 58 smfi->xxfi_version != 4) 59 { 60 /* hard failure for now! */ 61 smi_log(SMI_LOG_ERR, 62 "%s: smfi_register: version mismatch application: %d != milter: %d", 63 smfi->xxfi_name, smfi->xxfi_version, 64 (int) SMFI_VERSION); 65 66 /* XXX how about smfi? */ 67 free(smfi->xxfi_name); 68 return MI_FAILURE; 69 } 70 71 return MI_SUCCESS; 72} 73 74/* 75** SMFI_STOP -- stop milter 76** 77** Parameters: 78** none. 79** 80** Returns: 81** success. 82*/ 83 84int 85smfi_stop() 86{ 87 mi_stop_milters(MILTER_STOP); 88 return MI_SUCCESS; 89} 90 91/* 92** Default values for some variables. 93** Most of these can be changed with the functions below. 94*/ 95 96static int dbg = 0; 97static char *conn = NULL; 98static int timeout = MI_TIMEOUT; 99static int backlog = MI_SOMAXCONN; 100 101/* 102** SMFI_OPENSOCKET -- try the socket setup to make sure we'll be 103** able to start up 104** 105** Parameters: 106** rmsocket -- if true, instructs libmilter to attempt 107** to remove the socket before creating it; 108** only applies for "local:" or "unix:" sockets 109** 110** Return: 111** MI_SUCCESS/MI_FAILURE 112*/ 113 114int 115smfi_opensocket(rmsocket) 116 bool rmsocket; 117{ 118 if (smfi == NULL || conn == NULL) 119 return MI_FAILURE; 120 121 return mi_opensocket(conn, backlog, dbg, rmsocket, smfi); 122} 123 124/* 125** SMFI_SETDBG -- set debug level. 126** 127** Parameters: 128** odbg -- new debug level. 129** 130** Returns: 131** MI_SUCCESS 132*/ 133 134int 135smfi_setdbg(odbg) 136 int odbg; 137{ 138 dbg = odbg; 139 return MI_SUCCESS; 140} 141 142/* 143** SMFI_SETTIMEOUT -- set timeout (for read/write). 144** 145** Parameters: 146** otimeout -- new timeout. 147** 148** Returns: 149** MI_SUCCESS 150*/ 151 152int 153smfi_settimeout(otimeout) 154 int otimeout; 155{ 156 timeout = otimeout; 157 return MI_SUCCESS; 158} 159 160/* 161** SMFI_SETCONN -- set connection information (socket description) 162** 163** Parameters: 164** oconn -- new connection information. 165** 166** Returns: 167** MI_SUCCESS/MI_FAILURE 168*/ 169 170int 171smfi_setconn(oconn) 172 char *oconn; 173{ 174 size_t l; 175 176 if (oconn == NULL || *oconn == '\0') 177 return MI_FAILURE; 178 l = strlen(oconn) + 1; 179 if ((conn = (char *) malloc(l)) == NULL) 180 return MI_FAILURE; 181 if (sm_strlcpy(conn, oconn, l) >= l) 182 return MI_FAILURE; 183 return MI_SUCCESS; 184} 185 186/* 187** SMFI_SETBACKLOG -- set backlog 188** 189** Parameters: 190** obacklog -- new backlog. 191** 192** Returns: 193** MI_SUCCESS/MI_FAILURE 194*/ 195 196int 197smfi_setbacklog(obacklog) 198 int obacklog; 199{ 200 if (obacklog <= 0) 201 return MI_FAILURE; 202 backlog = obacklog; 203 return MI_SUCCESS; 204} 205 206 207/* 208** SMFI_MAIN -- setup milter connnection and start listener. 209** 210** Parameters: 211** none. 212** 213** Returns: 214** MI_SUCCESS/MI_FAILURE 215*/ 216 217int 218smfi_main() 219{ 220 int r; 221 222 (void) signal(SIGPIPE, SIG_IGN); 223 if (conn == NULL) 224 { 225 smi_log(SMI_LOG_FATAL, "%s: missing connection information", 226 smfi->xxfi_name); 227 return MI_FAILURE; 228 } 229 230 (void) atexit(mi_clean_signals); 231 if (mi_control_startup(smfi->xxfi_name) != MI_SUCCESS) 232 { 233 smi_log(SMI_LOG_FATAL, 234 "%s: Couldn't start signal thread", 235 smfi->xxfi_name); 236 return MI_FAILURE; 237 } 238 r = MI_MONITOR_INIT(); 239 240 /* Startup the listener */ 241 if (mi_listener(conn, dbg, smfi, timeout, backlog) != MI_SUCCESS) 242 r = MI_FAILURE; 243 244 return r; 245} 246 247