1 /* 2 * Copyright (c) 1999-2002 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> 12 SM_RCSID("@(#)$Id: main.c,v 8.64.2.8 2002/12/18 23:13:45 ca Exp $") 13 14 #define _DEFINE 1 15 #include "libmilter.h" 16 #include <fcntl.h> 17 #include <sys/stat.h> 18 19 20 static 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 32 int 33 smfi_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 81 int 82 smfi_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 93 static int dbg = 0; 94 static char *conn = NULL; 95 static int timeout = MI_TIMEOUT; 96 static int backlog = MI_SOMAXCONN; 97 98 #if _FFR_SMFI_OPENSOCKET 99 /* 100 ** SMFI_OPENSOCKET -- try the socket setup to make sure we'll be 101 ** able to start up 102 ** 103 ** Parameters: 104 ** None. 105 ** 106 ** Return: 107 ** MI_SUCCESS/MI_FAILURE 108 */ 109 110 int 111 smfi_opensocket() 112 { 113 if (smfi == NULL || conn == NULL) 114 return MI_FAILURE; 115 116 return mi_opensocket(conn, backlog, dbg, smfi); 117 } 118 #endif /* _FFR_SMFI_OPENSOCKET */ 119 120 /* 121 ** SMFI_SETDBG -- set debug level. 122 ** 123 ** Parameters: 124 ** odbg -- new debug level. 125 ** 126 ** Returns: 127 ** MI_SUCCESS 128 */ 129 130 int 131 smfi_setdbg(odbg) 132 int odbg; 133 { 134 dbg = odbg; 135 return MI_SUCCESS; 136 } 137 138 /* 139 ** SMFI_SETTIMEOUT -- set timeout (for read/write). 140 ** 141 ** Parameters: 142 ** otimeout -- new timeout. 143 ** 144 ** Returns: 145 ** MI_SUCCESS 146 */ 147 148 int 149 smfi_settimeout(otimeout) 150 int otimeout; 151 { 152 timeout = otimeout; 153 return MI_SUCCESS; 154 } 155 156 /* 157 ** SMFI_SETCONN -- set connection information (socket description) 158 ** 159 ** Parameters: 160 ** oconn -- new connection information. 161 ** 162 ** Returns: 163 ** MI_SUCCESS/MI_FAILURE 164 */ 165 166 int 167 smfi_setconn(oconn) 168 char *oconn; 169 { 170 size_t l; 171 172 if (oconn == NULL || *oconn == '\0') 173 return MI_FAILURE; 174 l = strlen(oconn) + 1; 175 if ((conn = (char *) malloc(l)) == NULL) 176 return MI_FAILURE; 177 if (sm_strlcpy(conn, oconn, l) >= l) 178 return MI_FAILURE; 179 return MI_SUCCESS; 180 } 181 182 /* 183 ** SMFI_SETBACKLOG -- set backlog 184 ** 185 ** Parameters: 186 ** obacklog -- new backlog. 187 ** 188 ** Returns: 189 ** MI_SUCCESS/MI_FAILURE 190 */ 191 192 int 193 smfi_setbacklog(obacklog) 194 int obacklog; 195 { 196 if (obacklog <= 0) 197 return MI_FAILURE; 198 backlog = obacklog; 199 return MI_SUCCESS; 200 } 201 202 203 /* 204 ** SMFI_MAIN -- setup milter connnection and start listener. 205 ** 206 ** Parameters: 207 ** none. 208 ** 209 ** Returns: 210 ** MI_SUCCESS/MI_FAILURE 211 */ 212 213 int 214 smfi_main() 215 { 216 int r; 217 218 (void) signal(SIGPIPE, SIG_IGN); 219 if (conn == NULL) 220 { 221 smi_log(SMI_LOG_FATAL, "%s: missing connection information", 222 smfi->xxfi_name); 223 return MI_FAILURE; 224 } 225 226 (void) atexit(mi_clean_signals); 227 if (mi_control_startup(smfi->xxfi_name) != MI_SUCCESS) 228 { 229 smi_log(SMI_LOG_FATAL, 230 "%s: Couldn't start signal thread", 231 smfi->xxfi_name); 232 return MI_FAILURE; 233 } 234 r = MI_SUCCESS; 235 236 /* Startup the listener */ 237 if (mi_listener(conn, dbg, smfi, timeout, backlog) != MI_SUCCESS) 238 r = MI_FAILURE; 239 return r; 240 } 241 242