main.c revision 132943
1/* 2 * Copyright (c) 1999-2003 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 8.79 2003/10/20 22:25:09 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 { 57 /* hard failure for now! */ 58 smi_log(SMI_LOG_ERR, 59 "%s: smfi_register: version mismatch application: %d != milter: %d", 60 smfi->xxfi_name, smfi->xxfi_version, 61 (int) SMFI_VERSION); 62 63 /* XXX how about smfi? */ 64 free(smfi->xxfi_name); 65 return MI_FAILURE; 66 } 67 68 return MI_SUCCESS; 69} 70 71/* 72** SMFI_STOP -- stop milter 73** 74** Parameters: 75** none. 76** 77** Returns: 78** success. 79*/ 80 81int 82smfi_stop() 83{ 84 mi_stop_milters(MILTER_STOP); 85 return MI_SUCCESS; 86} 87 88/* 89** Default values for some variables. 90** Most of these can be changed with the functions below. 91*/ 92 93static int dbg = 0; 94static char *conn = NULL; 95static int timeout = MI_TIMEOUT; 96static int backlog = MI_SOMAXCONN; 97 98/* 99** SMFI_OPENSOCKET -- try the socket setup to make sure we'll be 100** able to start up 101** 102** Parameters: 103** rmsocket -- if true, instructs libmilter to attempt 104** to remove the socket before creating it; 105** only applies for "local:" or "unix:" sockets 106** 107** Return: 108** MI_SUCCESS/MI_FAILURE 109*/ 110 111int 112smfi_opensocket(rmsocket) 113 bool rmsocket; 114{ 115 if (smfi == NULL || conn == NULL) 116 return MI_FAILURE; 117 118 return mi_opensocket(conn, backlog, dbg, rmsocket, smfi); 119} 120 121/* 122** SMFI_SETDBG -- set debug level. 123** 124** Parameters: 125** odbg -- new debug level. 126** 127** Returns: 128** MI_SUCCESS 129*/ 130 131int 132smfi_setdbg(odbg) 133 int odbg; 134{ 135 dbg = odbg; 136 return MI_SUCCESS; 137} 138 139/* 140** SMFI_SETTIMEOUT -- set timeout (for read/write). 141** 142** Parameters: 143** otimeout -- new timeout. 144** 145** Returns: 146** MI_SUCCESS 147*/ 148 149int 150smfi_settimeout(otimeout) 151 int otimeout; 152{ 153 timeout = otimeout; 154 return MI_SUCCESS; 155} 156 157/* 158** SMFI_SETCONN -- set connection information (socket description) 159** 160** Parameters: 161** oconn -- new connection information. 162** 163** Returns: 164** MI_SUCCESS/MI_FAILURE 165*/ 166 167int 168smfi_setconn(oconn) 169 char *oconn; 170{ 171 size_t l; 172 173 if (oconn == NULL || *oconn == '\0') 174 return MI_FAILURE; 175 l = strlen(oconn) + 1; 176 if ((conn = (char *) malloc(l)) == NULL) 177 return MI_FAILURE; 178 if (sm_strlcpy(conn, oconn, l) >= l) 179 return MI_FAILURE; 180 return MI_SUCCESS; 181} 182 183/* 184** SMFI_SETBACKLOG -- set backlog 185** 186** Parameters: 187** obacklog -- new backlog. 188** 189** Returns: 190** MI_SUCCESS/MI_FAILURE 191*/ 192 193int 194smfi_setbacklog(obacklog) 195 int obacklog; 196{ 197 if (obacklog <= 0) 198 return MI_FAILURE; 199 backlog = obacklog; 200 return MI_SUCCESS; 201} 202 203 204/* 205** SMFI_MAIN -- setup milter connnection and start listener. 206** 207** Parameters: 208** none. 209** 210** Returns: 211** MI_SUCCESS/MI_FAILURE 212*/ 213 214int 215smfi_main() 216{ 217 int r; 218 219 (void) signal(SIGPIPE, SIG_IGN); 220 if (conn == NULL) 221 { 222 smi_log(SMI_LOG_FATAL, "%s: missing connection information", 223 smfi->xxfi_name); 224 return MI_FAILURE; 225 } 226 227 (void) atexit(mi_clean_signals); 228 if (mi_control_startup(smfi->xxfi_name) != MI_SUCCESS) 229 { 230 smi_log(SMI_LOG_FATAL, 231 "%s: Couldn't start signal thread", 232 smfi->xxfi_name); 233 return MI_FAILURE; 234 } 235 r = MI_SUCCESS; 236 237 /* Startup the listener */ 238 if (mi_listener(conn, dbg, smfi, timeout, backlog) != MI_SUCCESS) 239 r = MI_FAILURE; 240 241 return r; 242} 243 244