meillo@0: /*  MasqMail
meillo@0:     Copyright (C) 2000-2001 Oliver Kurth
meillo@0:  *
meillo@0:  * This program is free software; you can redistribute it and/or modify
meillo@0:  * it under the terms of the GNU General Public License as published by
meillo@0:  * the Free Software Foundation; either version 2 of the License, or
meillo@0:  * (at your option) any later version.
meillo@0:  * 
meillo@0:  * This program is distributed in the hope that it will be useful,
meillo@0:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
meillo@0:  * GNU General Public License for more details.
meillo@0:  *
meillo@0:  * You should have received a copy of the GNU General Public License
meillo@0:  * along with this program; if not, write to the Free Software
meillo@0:  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
meillo@0:  */
meillo@0: 
meillo@0: #include <sys/wait.h>
meillo@0: 
meillo@0: #include "masqmail.h"
meillo@0: #include "peopen.h"
meillo@0: #include "readsock.h"
meillo@0: 
meillo@0: gboolean fail_msg(message *msg, gchar *template,
meillo@0: 		  GList *failed_rcpts, gchar *err_fmt, va_list args)
meillo@0: {
meillo@0:   gboolean ok = FALSE;
meillo@0:   address *ret_path = NULL;
meillo@0: 
meillo@0:   /* do not bounce bounces, send to postmaster instead */
meillo@0:   if(msg->return_path->local_part[0] == 0){
meillo@0:     GList *node;
meillo@0: 
meillo@0:     ret_path = create_address_qualified("postmaster", TRUE, conf.host_name);
meillo@0:     foreach(failed_rcpts, node){
meillo@0:       address *addr = (address *)(node->data);
meillo@0:       if(addr_isequal_parent(addr, ret_path)){
meillo@0: 	logwrite(LOG_ALERT, "%s == %s: postmaster address failed\n",
meillo@0: 		 msg->uid, addr_string(ret_path));
meillo@0: 	return FALSE;
meillo@0:       }
meillo@0:     }
meillo@0:   }else
meillo@0:     ret_path = copy_address(msg->return_path);
meillo@0: 
meillo@0:   DEBUG(1) debugf("sending failure notice to %s.\n", addr_string(ret_path));
meillo@0: 
meillo@0:   if(template){
meillo@0:     FILE *file;
meillo@0:     GList *var_table = var_table_conf(var_table_msg(NULL, msg));
meillo@0:     gchar *err_msg = g_strdup_vprintf(err_fmt, args);
meillo@0: 
meillo@0:     var_table = g_list_prepend(var_table, create_pair_string("err_msg", err_msg));
meillo@0:     g_free(err_msg);
meillo@0: 
meillo@0:     if((file = fopen(template, "r"))){
meillo@0:       FILE *out;
meillo@0:       gchar *cmd;
meillo@0:       pid_t pid;
meillo@0: 
meillo@0:       //      cmd = g_strdup_printf(SBINDIR"/masqmail -oi -f \"<>\" %s@%s",
meillo@0:       //			    ret_path->local_part, ret_path->domain);
meillo@0:       cmd = g_strdup_printf(SBINDIR"/masqmail -oi -f <> %s@%s",
meillo@0: 			    ret_path->local_part, ret_path->domain);
meillo@0:       if((out = peidopen(cmd, "w", environ, &pid, conf.mail_uid, conf.mail_gid))){
meillo@0: 	gchar fmt[256], line[256];
meillo@0: 	int status, ret;
meillo@0: 
meillo@0: 	while((ret = read_sockline(file, fmt, 256, 0, 0)) > 0){
meillo@0: 	  if(fmt[0] == '@'){
meillo@0: 	    GList *node;
meillo@0: 	    if(strncmp(fmt, "@failed_rcpts", 13) == 0){
meillo@0: 	      foreach(failed_rcpts, node){
meillo@0: 		address *rcpt = (address *)(node->data);
meillo@0: 		fprintf(out, "\t%s\n", addr_string(rcpt));
meillo@0: 	      }
meillo@0: 	    }else if(strncmp(fmt, "@msg_headers", 12) == 0){
meillo@0: 	      foreach(msg->hdr_list, node){
meillo@0: 		header *hdr = (header *)(node->data);
meillo@0: 		fputs(hdr->header, out);
meillo@0: 	      }
meillo@0: 	    }else if(strncmp(fmt, "@msg_body", 9) == 0){
meillo@0: 	      /* we may have to read the data at this point
meillo@0: 		 and remember if we did */
meillo@0: 	      gboolean flag = (msg->data_list == NULL);
meillo@0: 	      if(flag){
meillo@0: 		if(!spool_read_data(msg)){
meillo@0: 		  logwrite(LOG_ALERT, "could not open data spool file %s\n",
meillo@0: 			   msg->uid);
meillo@0: 		}
meillo@0: 	      }
meillo@0: 	      foreach(msg->data_list, node){
meillo@0: 		gchar *line = (gchar *)(node->data);
meillo@0: 		fputs(line, out);
meillo@0: 	      }
meillo@0: 	      if(flag) msg_free_data(msg);
meillo@0: 	    }
meillo@0: 	  }else{
meillo@0: 	    expand(var_table, fmt, line, 256);
meillo@0: 	    fputs(line, out);
meillo@0: 	  }
meillo@0: 	}
meillo@0: 
meillo@0: 	fclose(out);
meillo@0: 	waitpid(pid, &status, 0);
meillo@0: 	if((WEXITSTATUS(status) != EXIT_SUCCESS) || WIFSIGNALED(status)){
meillo@0: 	  if(WEXITSTATUS(status) != EXIT_SUCCESS)
meillo@0: 	    logwrite(LOG_WARNING, "child returned %d\n", WEXITSTATUS(status));
meillo@0: 	  if(WIFSIGNALED(status))
meillo@0: 	    logwrite(LOG_WARNING, "child got signal: %d\n", WTERMSIG(status));
meillo@0: 	}else ok = TRUE;
meillo@0:       }else{
meillo@0: 	logwrite(LOG_ERR, "peopen failed: %s\n", strerror(errno));
meillo@0:       }
meillo@0:       g_free(cmd);
meillo@0:       fclose(file);
meillo@0:     }else
meillo@0:       logwrite(LOG_ALERT, "could not open failure message template %s: %s\n",
meillo@0: 	       conf.errmsg_file, strerror(errno));
meillo@0: 
meillo@0:     destroy_table(var_table);
meillo@0:   }
meillo@0:     
meillo@0:   destroy_address(ret_path);
meillo@0: 
meillo@0:   return ok;
meillo@0: }
meillo@0: 
meillo@0: /*
meillo@0: ival  : |--|--|----|--------|--------|
meillo@0: warned: |-------W-------------W------
meillo@0: result: |nnnyyyynnnnyyyyyyyyyynnnnnnn
meillo@0: */
meillo@0: 
meillo@0: static
meillo@0: gboolean warn_msg_is_due(message *msg)
meillo@0: {
meillo@0:   time_t now = time(NULL);
meillo@0:   gint dummy;
meillo@0:   
meillo@0:   GList *node;
meillo@0:   for(node = g_list_last(conf.warn_intervals); node; node = g_list_previous(node)){
meillo@0:     gchar *str_ival = (gchar *)(node->data);
meillo@0:     gint ival = time_interval(str_ival, &dummy);
meillo@0:     if(ival >= 0){
meillo@0:       DEBUG(5) debugf("ival = %d\n", ival);
meillo@0:       DEBUG(5) debugf("now - msg->received_time = %d\n", now - msg->received_time);
meillo@0:       if((now - msg->received_time) > ival){
meillo@0: 	if(msg->warned_time != 0){
meillo@0: 	  if((msg->warned_time - msg->received_time) < ival)
meillo@0: 	    return TRUE;
meillo@0: 	}else
meillo@0: 	  return TRUE;
meillo@0:       }
meillo@0:     }else
meillo@0:       logwrite(LOG_WARNING, "invalid time interval: %s\n", str_ival);
meillo@0:   }
meillo@0:   return FALSE;
meillo@0: }
meillo@0: 
meillo@0: gboolean warn_msg(message *msg, gchar *template,
meillo@0: 		  GList *defered_rcpts, gchar *err_fmt, va_list args)
meillo@0: {
meillo@0:   time_t now = time(NULL);
meillo@0: 
meillo@0:   if(warn_msg_is_due(msg)){
meillo@0:     if(fail_msg(msg, template, defered_rcpts, err_fmt, args)){
meillo@0:       msg->warned_time = now;
meillo@0:       return TRUE;
meillo@0:     }else
meillo@0:       return FALSE;
meillo@0:   }
meillo@0:   return TRUE;
meillo@0: }
meillo@0: 
meillo@0: