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Diffstat (limited to 'sendmail/libmilter/main.c')
| -rw-r--r-- | sendmail/libmilter/main.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/sendmail/libmilter/main.c b/sendmail/libmilter/main.c new file mode 100644 index 000000000000..faff4f8363db --- /dev/null +++ b/sendmail/libmilter/main.c @@ -0,0 +1,246 @@ +/* + * Copyright (c) 1999-2003, 2006, 2007 Sendmail, Inc. and its suppliers. + * All rights reserved. + * + * By using this file, you agree to the terms and conditions set + * forth in the LICENSE file which can be found at the top level of + * the sendmail distribution. + * + */ + +#include <sm/gen.h> +SM_RCSID("@(#)$Id: main.c,v 8.83 2007/04/23 22:22:50 ca Exp $") + +#define _DEFINE 1 +#include "libmilter.h" +#include <fcntl.h> +#include <sys/stat.h> + + +static smfiDesc_ptr smfi = NULL; + +/* +** SMFI_REGISTER -- register a filter description +** +** Parameters: +** smfilter -- description of filter to register +** +** Returns: +** MI_SUCCESS/MI_FAILURE +*/ + +int +smfi_register(smfilter) + smfiDesc_str smfilter; +{ + size_t len; + + if (smfi == NULL) + { + smfi = (smfiDesc_ptr) malloc(sizeof *smfi); + if (smfi == NULL) + return MI_FAILURE; + } + (void) memcpy(smfi, &smfilter, sizeof *smfi); + if (smfilter.xxfi_name == NULL) + smfilter.xxfi_name = "Unknown"; + + len = strlen(smfilter.xxfi_name) + 1; + smfi->xxfi_name = (char *) malloc(len); + if (smfi->xxfi_name == NULL) + return MI_FAILURE; + (void) sm_strlcpy(smfi->xxfi_name, smfilter.xxfi_name, len); + + /* compare milter version with hard coded version */ + if (smfi->xxfi_version != SMFI_VERSION && + smfi->xxfi_version != 2 && + smfi->xxfi_version != 3 && + smfi->xxfi_version != 4) + { + /* hard failure for now! */ + smi_log(SMI_LOG_ERR, + "%s: smfi_register: version mismatch application: %d != milter: %d", + smfi->xxfi_name, smfi->xxfi_version, + (int) SMFI_VERSION); + + /* XXX how about smfi? */ + free(smfi->xxfi_name); + return MI_FAILURE; + } + + return MI_SUCCESS; +} + +/* +** SMFI_STOP -- stop milter +** +** Parameters: +** none. +** +** Returns: +** success. +*/ + +int +smfi_stop() +{ + mi_stop_milters(MILTER_STOP); + return MI_SUCCESS; +} + +/* +** Default values for some variables. +** Most of these can be changed with the functions below. +*/ + +static int dbg = 0; +static char *conn = NULL; +static int timeout = MI_TIMEOUT; +static int backlog = MI_SOMAXCONN; + +/* +** SMFI_OPENSOCKET -- try the socket setup to make sure we'll be +** able to start up +** +** Parameters: +** rmsocket -- if true, instructs libmilter to attempt +** to remove the socket before creating it; +** only applies for "local:" or "unix:" sockets +** +** Return: +** MI_SUCCESS/MI_FAILURE +*/ + +int +smfi_opensocket(rmsocket) + bool rmsocket; +{ + if (smfi == NULL || conn == NULL) + return MI_FAILURE; + + return mi_opensocket(conn, backlog, dbg, rmsocket, smfi); +} + +/* +** SMFI_SETDBG -- set debug level. +** +** Parameters: +** odbg -- new debug level. +** +** Returns: +** MI_SUCCESS +*/ + +int +smfi_setdbg(odbg) + int odbg; +{ + dbg = odbg; + return MI_SUCCESS; +} + +/* +** SMFI_SETTIMEOUT -- set timeout (for read/write). +** +** Parameters: +** otimeout -- new timeout. +** +** Returns: +** MI_SUCCESS +*/ + +int +smfi_settimeout(otimeout) + int otimeout; +{ + timeout = otimeout; + return MI_SUCCESS; +} + +/* +** SMFI_SETCONN -- set connection information (socket description) +** +** Parameters: +** oconn -- new connection information. +** +** Returns: +** MI_SUCCESS/MI_FAILURE +*/ + +int +smfi_setconn(oconn) + char *oconn; +{ + size_t l; + + if (oconn == NULL || *oconn == '\0') + return MI_FAILURE; + l = strlen(oconn) + 1; + if ((conn = (char *) malloc(l)) == NULL) + return MI_FAILURE; + if (sm_strlcpy(conn, oconn, l) >= l) + return MI_FAILURE; + return MI_SUCCESS; +} + +/* +** SMFI_SETBACKLOG -- set backlog +** +** Parameters: +** obacklog -- new backlog. +** +** Returns: +** MI_SUCCESS/MI_FAILURE +*/ + +int +smfi_setbacklog(obacklog) + int obacklog; +{ + if (obacklog <= 0) + return MI_FAILURE; + backlog = obacklog; + return MI_SUCCESS; +} + + +/* +** SMFI_MAIN -- setup milter connnection and start listener. +** +** Parameters: +** none. +** +** Returns: +** MI_SUCCESS/MI_FAILURE +*/ + +int +smfi_main() +{ + int r; + + (void) signal(SIGPIPE, SIG_IGN); + if (conn == NULL) + { + smi_log(SMI_LOG_FATAL, "%s: missing connection information", + smfi->xxfi_name); + return MI_FAILURE; + } + + (void) atexit(mi_clean_signals); + if (mi_control_startup(smfi->xxfi_name) != MI_SUCCESS) + { + smi_log(SMI_LOG_FATAL, + "%s: Couldn't start signal thread", + smfi->xxfi_name); + return MI_FAILURE; + } + r = MI_MONITOR_INIT(); + + /* Startup the listener */ + if (mi_listener(conn, dbg, smfi, timeout, backlog) != MI_SUCCESS) + r = MI_FAILURE; + + return r; +} + |