main.c revision 266527
1/* 2 * Copyright (c) 1999-2003, 2006, 2007 Proofpoint, 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 8.85 2013-11-22 20:51:36 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 ((SM_LM_VRS_MAJOR(smfi->xxfi_version) != SM_LM_VRS_MAJOR(SMFI_VERSION) || 56 SM_LM_VRS_MINOR(smfi->xxfi_version) != SM_LM_VRS_MINOR(SMFI_VERSION)) && 57 smfi->xxfi_version != 2 && 58 smfi->xxfi_version != 3 && 59 smfi->xxfi_version != 4) 60 { 61 /* hard failure for now! */ 62 smi_log(SMI_LOG_ERR, 63 "%s: smfi_register: version mismatch application: %d != milter: %d", 64 smfi->xxfi_name, smfi->xxfi_version, 65 (int) SMFI_VERSION); 66 67 /* XXX how about smfi? */ 68 free(smfi->xxfi_name); 69 return MI_FAILURE; 70 } 71 72 return MI_SUCCESS; 73} 74 75/* 76** SMFI_STOP -- stop milter 77** 78** Parameters: 79** none. 80** 81** Returns: 82** success. 83*/ 84 85int 86smfi_stop() 87{ 88 mi_stop_milters(MILTER_STOP); 89 return MI_SUCCESS; 90} 91 92/* 93** Default values for some variables. 94** Most of these can be changed with the functions below. 95*/ 96 97static int dbg = 0; 98static char *conn = NULL; 99static int timeout = MI_TIMEOUT; 100static int backlog = MI_SOMAXCONN; 101 102/* 103** SMFI_OPENSOCKET -- try the socket setup to make sure we'll be 104** able to start up 105** 106** Parameters: 107** rmsocket -- if true, instructs libmilter to attempt 108** to remove the socket before creating it; 109** only applies for "local:" or "unix:" sockets 110** 111** Return: 112** MI_SUCCESS/MI_FAILURE 113*/ 114 115int 116smfi_opensocket(rmsocket) 117 bool rmsocket; 118{ 119 if (smfi == NULL || conn == NULL) 120 return MI_FAILURE; 121 122 return mi_opensocket(conn, backlog, dbg, rmsocket, smfi); 123} 124 125/* 126** SMFI_SETDBG -- set debug level. 127** 128** Parameters: 129** odbg -- new debug level. 130** 131** Returns: 132** MI_SUCCESS 133*/ 134 135int 136smfi_setdbg(odbg) 137 int odbg; 138{ 139 dbg = odbg; 140 return MI_SUCCESS; 141} 142 143/* 144** SMFI_SETTIMEOUT -- set timeout (for read/write). 145** 146** Parameters: 147** otimeout -- new timeout. 148** 149** Returns: 150** MI_SUCCESS 151*/ 152 153int 154smfi_settimeout(otimeout) 155 int otimeout; 156{ 157 timeout = otimeout; 158 return MI_SUCCESS; 159} 160 161/* 162** SMFI_SETCONN -- set connection information (socket description) 163** 164** Parameters: 165** oconn -- new connection information. 166** 167** Returns: 168** MI_SUCCESS/MI_FAILURE 169*/ 170 171int 172smfi_setconn(oconn) 173 char *oconn; 174{ 175 size_t l; 176 177 if (oconn == NULL || *oconn == '\0') 178 return MI_FAILURE; 179 l = strlen(oconn) + 1; 180 if ((conn = (char *) malloc(l)) == NULL) 181 return MI_FAILURE; 182 if (sm_strlcpy(conn, oconn, l) >= l) 183 return MI_FAILURE; 184 return MI_SUCCESS; 185} 186 187/* 188** SMFI_SETBACKLOG -- set backlog 189** 190** Parameters: 191** obacklog -- new backlog. 192** 193** Returns: 194** MI_SUCCESS/MI_FAILURE 195*/ 196 197int 198smfi_setbacklog(obacklog) 199 int obacklog; 200{ 201 if (obacklog <= 0) 202 return MI_FAILURE; 203 backlog = obacklog; 204 return MI_SUCCESS; 205} 206 207 208/* 209** SMFI_MAIN -- setup milter connnection and start listener. 210** 211** Parameters: 212** none. 213** 214** Returns: 215** MI_SUCCESS/MI_FAILURE 216*/ 217 218int 219smfi_main() 220{ 221 int r; 222 223 (void) signal(SIGPIPE, SIG_IGN); 224 if (conn == NULL) 225 { 226 smi_log(SMI_LOG_FATAL, "%s: missing connection information", 227 smfi->xxfi_name); 228 return MI_FAILURE; 229 } 230 231 (void) atexit(mi_clean_signals); 232 if (mi_control_startup(smfi->xxfi_name) != MI_SUCCESS) 233 { 234 smi_log(SMI_LOG_FATAL, 235 "%s: Couldn't start signal thread", 236 smfi->xxfi_name); 237 return MI_FAILURE; 238 } 239 r = MI_MONITOR_INIT(); 240 241 /* Startup the listener */ 242 if (mi_listener(conn, dbg, smfi, timeout, backlog) != MI_SUCCESS) 243 r = MI_FAILURE; 244 245 return r; 246} 247 248