meillo@0: /*  MasqMail
meillo@0:     Copyright (C) 1999-2001 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0: */
meillo@0: 
meillo@0: #include "masqmail.h"
meillo@0: #include <fnmatch.h>
meillo@0: 
meillo@0: msgout_perhost *create_msgout_perhost(gchar *host)
meillo@0: {
meillo@0:   msgout_perhost *mo_ph = g_malloc(sizeof(msgout_perhost));
meillo@0:   if(mo_ph){
meillo@0:     mo_ph->host = g_strdup(host);
meillo@0:     mo_ph->msgout_list = NULL;
meillo@0:   }
meillo@0:   return mo_ph;
meillo@0: }
meillo@0: 
meillo@0: void destroy_msgout_perhost(msgout_perhost *mo_ph)
meillo@0: {
meillo@0:   GList *mo_node;
meillo@0: 
meillo@0:   foreach(mo_ph->msgout_list, mo_node){
meillo@0:     msg_out *mo = (msg_out *)(mo_node->data);
meillo@0:     /* the rcpt_list is owned by the msgout's,
meillo@0:        but not the rcpt's themselves */
meillo@0:     g_list_free(mo->rcpt_list);
meillo@0:     g_free(mo);
meillo@0:   }
meillo@0:   g_list_free(mo_ph->msgout_list);
meillo@0:   g_free(mo_ph);
meillo@0: }
meillo@0: 
meillo@0: void rewrite_headers(msg_out *msgout, connect_route *route)
meillo@0: {
meillo@0:   /* if set_h_from_domain is set, replace domain in all
meillo@0:      From: headers.
meillo@0:   */
meillo@0:   msgout->hdr_list = g_list_copy(msgout->msg->hdr_list);
meillo@0: 
meillo@0:   /* map from addresses */
meillo@0:   if(route->map_h_from_addresses != NULL){
meillo@0:     GList *hdr_node;
meillo@0:     foreach(msgout->hdr_list, hdr_node){
meillo@0:       header *hdr = (header *)(hdr_node->data);
meillo@0:       if(hdr->id == HEAD_FROM){
meillo@0: 	header *new_hdr = copy_header(hdr);
meillo@0: 	if(map_address_header(new_hdr, route->map_h_from_addresses)){
meillo@0: 	  hdr_node->data = new_hdr;
meillo@0: 	  /* we need this list only to carefully free the extra headers: */
meillo@0: 	  msgout->xtra_hdr_list =
meillo@0: 	    g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@0: 	}else
meillo@0: 	  g_free(new_hdr);
meillo@0:       }
meillo@0:     }
meillo@0:   }else{
meillo@0:     /* replace from domain */
meillo@0:     if(route->set_h_from_domain != NULL){
meillo@0:       GList *hdr_node;
meillo@0:       
meillo@0:       foreach(msgout->hdr_list, hdr_node){
meillo@0: 	header *hdr = (header *)(hdr_node->data);
meillo@0: 	if(hdr->id == HEAD_FROM){
meillo@0: 	  header *new_hdr = copy_header(hdr);
meillo@0: 	  
meillo@0: 	  DEBUG(5) debugf("setting From: domain to %s\n",
meillo@0: 			  route->set_h_from_domain);
meillo@0: 	  if(set_address_header_domain(new_hdr, route->set_h_from_domain)){
meillo@0: 	    hdr_node->data = new_hdr;
meillo@0: 	    /* we need this list only to carefully free the extra headers: */
meillo@0: 	    DEBUG(6) debugf("header = %s\n",
meillo@0: 			    new_hdr->header);
meillo@0: 	    msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@0: 	  }else{
meillo@0: 	    logwrite(LOG_ALERT, "error in set_address_header_domain(%s, %s)\n",
meillo@0: 		     new_hdr->value, route->set_h_from_domain);
meillo@0: 	  }
meillo@0: 	}
meillo@0:       }
meillo@0:     }
meillo@0:   }
meillo@0: 
meillo@0:   /* map reply-to addresses */
meillo@0:   if(route->map_h_reply_to_addresses != NULL){
meillo@0:     GList *hdr_node;
meillo@0:     foreach(msgout->hdr_list, hdr_node){
meillo@0:       header *hdr = (header *)(hdr_node->data);
meillo@0:       if(hdr->id == HEAD_REPLY_TO){
meillo@0: 	header *new_hdr = copy_header(hdr);
meillo@0: 	if(map_address_header(new_hdr, route->map_h_reply_to_addresses)){
meillo@0: 	  hdr_node->data = new_hdr;
meillo@0: 	  /* we need this list only to carefully free the extra headers: */
meillo@0: 	  msgout->xtra_hdr_list =
meillo@0: 	    g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@0: 	}else
meillo@0: 	  g_free(new_hdr);
meillo@0:       }
meillo@0:     }
meillo@0:   }else{
meillo@0:     /* replace Reply-to domain */
meillo@0:     if(route->set_h_reply_to_domain != NULL){
meillo@0:       GList *hdr_node;
meillo@0:       
meillo@0:       foreach(msgout->hdr_list, hdr_node){
meillo@0: 	header *hdr = (header *)(hdr_node->data);
meillo@0: 	if(hdr->id == HEAD_REPLY_TO){
meillo@0: 	  header *new_hdr = copy_header(hdr);
meillo@0: 	  
meillo@0: 	  set_address_header_domain(new_hdr, route->set_h_reply_to_domain);
meillo@0: 	  hdr_node->data = new_hdr;
meillo@0: 	  /* we need this list only to carefully free the extra headers: */
meillo@0: 	  msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@0: 	}
meillo@0:       }
meillo@0:     }
meillo@0:   }
meillo@0: 
meillo@0:   /* map Mail-Followup-To addresses */
meillo@0:   if(route->map_h_mail_followup_to_addresses != NULL){
meillo@0:     GList *hdr_node;
meillo@0:     foreach(msgout->hdr_list, hdr_node){
meillo@0:       header *hdr = (header *)(hdr_node->data);
meillo@0:       if(strncasecmp(hdr->header, "Mail-Followup-To", 16) == 0){
meillo@0: 	header *new_hdr = copy_header(hdr);
meillo@0: 	if(map_address_header(new_hdr, route->map_h_mail_followup_to_addresses)){
meillo@0: 	  hdr_node->data = new_hdr;
meillo@0: 	  /* we need this list only to carefully free the extra headers: */
meillo@0: 	  msgout->xtra_hdr_list =
meillo@0: 	    g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@0: 	}else
meillo@0: 	  g_free(new_hdr);
meillo@0:       }
meillo@0:     }
meillo@0:   }
meillo@0: 
meillo@0:   /* set Sender: domain to return_path->domain */
meillo@0:   if(route->expand_h_sender_domain){
meillo@0:     GList *hdr_node;
meillo@0: 
meillo@0:     foreach(msgout->hdr_list, hdr_node){
meillo@0:       header *hdr = (header *)(hdr_node->data);
meillo@0:       if(hdr->id == HEAD_SENDER){
meillo@0: 	header *new_hdr = copy_header(hdr);
meillo@0: 
meillo@0: 	set_address_header_domain(new_hdr, msgout->return_path->domain);
meillo@0: 	hdr_node->data = new_hdr;
meillo@0: 	/* we need this list only to carefully free the extra headers: */
meillo@0: 	msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@0:       }
meillo@0:     }
meillo@0:   }
meillo@0: 
meillo@0:   /* set Sender: domain to return_path->domain */
meillo@0:   if(route->expand_h_sender_address){
meillo@0:     GList *hdr_node;
meillo@0: 
meillo@0:     foreach(msgout->hdr_list, hdr_node){
meillo@0:       header *hdr = (header *)(hdr_node->data);
meillo@0:       if(hdr->id == HEAD_SENDER){
meillo@0: 	header *new_hdr;
meillo@0: 
meillo@0: 	new_hdr =
meillo@0: 	  create_header(HEAD_SENDER, "Sender: %s@%s\n",
meillo@0: 			msgout->return_path->local_part, msgout->return_path->domain);
meillo@0: 	hdr_node->data = new_hdr;
meillo@0: 	/* we need this list only to carefully free the extra headers: */
meillo@0: 	msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@0:       }
meillo@0:     }
meillo@0:   }
meillo@0: 
meillo@0:   if(msgout->xtra_hdr_list == NULL){
meillo@0:     /* nothing was changed */
meillo@0:     g_list_free(msgout->hdr_list);
meillo@0:     msgout->hdr_list = NULL;
meillo@0:   }
meillo@0:   DEBUG(5) debugf("rewrite_headers() returning\n");
meillo@0: }
meillo@0: 
meillo@0: void rcptlist_with_one_of_hostlist(GList *rcpt_list, GList *host_list,
meillo@0: 				   GList **p_rcpt_list, GList **p_non_rcpt_list)
meillo@0: {
meillo@0:   GList *rcpt_node;
meillo@0: 
meillo@0:   if(rcpt_list == NULL)
meillo@0:     return;
meillo@0: 
meillo@0:   foreach(rcpt_list, rcpt_node){
meillo@0:     address *rcpt = (address *)(rcpt_node->data);
meillo@0:     GList *host_node = NULL;
meillo@0: 
meillo@0:     foreach(host_list, host_node){
meillo@0:       gchar *host = (gchar *)(host_node->data);
meillo@0:       if(fnmatch(host, rcpt->domain, FNM_CASEFOLD) == 0)
meillo@0: 	break;
meillo@0:     }
meillo@0:     if(host_node){
meillo@0:       if(p_rcpt_list)
meillo@0: 	*p_rcpt_list = g_list_append(*p_rcpt_list, rcpt);
meillo@0:     }else{
meillo@0:       if(p_non_rcpt_list)
meillo@0: 	*p_non_rcpt_list = g_list_append(*p_non_rcpt_list, rcpt);
meillo@0:     }
meillo@0: 
meillo@0:   }
meillo@0: }
meillo@0: 
meillo@0: void rcptlist_with_addr_is_local(GList *rcpt_list,
meillo@0: 				 GList **p_rcpt_list, GList **p_non_rcpt_list)
meillo@0: {
meillo@0:   GList *rcpt_node;
meillo@0: 
meillo@0:   if(rcpt_list == NULL)
meillo@0:     return;
meillo@0: 
meillo@0:   foreach(rcpt_list, rcpt_node){
meillo@0:     address *rcpt = (address *)(rcpt_node->data);
meillo@0:     if(addr_is_local(rcpt)){
meillo@0:       if(p_rcpt_list)
meillo@0: 	*p_rcpt_list = g_list_append(*p_rcpt_list, rcpt);
meillo@0:     }else{
meillo@0:       if(p_non_rcpt_list)
meillo@0: 	*p_non_rcpt_list = g_list_append(*p_non_rcpt_list, rcpt);
meillo@0:     }
meillo@0: 
meillo@0:   }
meillo@0: }
meillo@0: 
meillo@0: static gint _g_list_addrcmp(gconstpointer a, gconstpointer b)
meillo@0: {
meillo@0:   return addr_match((address *)a, (address *)b);
meillo@0: }
meillo@0: 
meillo@0: gboolean route_is_allowed_return_path(connect_route *route, address *ret_path)
meillo@0: {
meillo@0:   if(route->not_allowed_return_paths != NULL){
meillo@0:     if(g_list_find_custom(route->not_allowed_return_paths, ret_path,
meillo@0: 			  _g_list_addrcmp) != NULL){
meillo@0:       return FALSE;
meillo@0:     }
meillo@0:   }
meillo@0:   if(route->allowed_return_paths != NULL){
meillo@0:     if(g_list_find_custom(route->allowed_return_paths, ret_path,
meillo@0: 			  _g_list_addrcmp) != NULL){
meillo@0:       return TRUE;
meillo@0:     }else{
meillo@0:       return FALSE;
meillo@0:     }
meillo@0:   }
meillo@0:   return TRUE;
meillo@0: }
meillo@0: 
meillo@0: static gint _g_list_strcmp(gconstpointer a, gconstpointer b)
meillo@0: {
meillo@0:   return (gint)strcmp(a, b);
meillo@0: }
meillo@0: 
meillo@0: gboolean route_is_allowed_mail_local(connect_route *route, address *ret_path)
meillo@0: {
meillo@0:   gchar *loc_part = ret_path->local_part;
meillo@0: 
meillo@0:   if(route->not_allowed_mail_locals != NULL){
meillo@0:     if(g_list_find_custom(route->not_allowed_mail_locals, loc_part,
meillo@0: 			 _g_list_strcmp) != NULL)
meillo@0:       return FALSE;
meillo@0:   }
meillo@0:   if(route->allowed_mail_locals != NULL){
meillo@0:     if(g_list_find_custom(route->allowed_mail_locals, loc_part,
meillo@0: 			  _g_list_strcmp) != NULL)
meillo@0:       return TRUE;
meillo@0:     else
meillo@0:       return FALSE;
meillo@0:   }
meillo@0:   return TRUE;
meillo@0: }
meillo@0: 
meillo@0: /* 
meillo@0:    Make lists of matching/not matching rcpts.
meillo@0:    Local domains are NOT regared here, these should be sorted out previously
meillo@0: */
meillo@0: void msg_rcptlist_route(connect_route *route, GList *rcpt_list,
meillo@0: 			GList **p_rcpt_list, GList **p_non_rcpt_list)
meillo@0: {
meillo@0:   GList *tmp_list = NULL;
meillo@0:   /* sort out those domains that can be sent over this connection: */
meillo@0:   if(route->allowed_rcpt_domains){
meillo@0:     DEBUG(5) debugf("testing for route->allowed_rcpt_domains\n");
meillo@0:     rcptlist_with_one_of_hostlist(rcpt_list, route->allowed_rcpt_domains, &tmp_list, p_non_rcpt_list);
meillo@0:   }else{
meillo@0:     DEBUG(5) debugf("route->allowed_rcpt_domains == NULL\n");
meillo@0:     tmp_list = g_list_copy(rcpt_list);
meillo@0:   }
meillo@0: 
meillo@0:   /* sort out those domains that cannot be sent over this connection: */
meillo@0:   rcptlist_with_one_of_hostlist(tmp_list, route->not_allowed_rcpt_domains, p_non_rcpt_list, p_rcpt_list);
meillo@0:   g_list_free(tmp_list);
meillo@0: }
meillo@0: 
meillo@0: msg_out *route_prepare_msgout(connect_route *route, msg_out *msgout)
meillo@0: {
meillo@0:   message *msg = msgout->msg;
meillo@0:   GList *rcpt_list = msgout->rcpt_list;
meillo@0: 
meillo@0:   if(rcpt_list != NULL){
meillo@0:     /* found a few */
meillo@0:     DEBUG(5){
meillo@0:       GList *node;
meillo@0:       debugf("rcpts for routed delivery, route = %s, id = %s\n", route->name, msg->uid);
meillo@0:       foreach(rcpt_list, node){
meillo@0: 	address *rcpt = (address *)(node->data);
meillo@0: 	debugf("rcpt for routed delivery: <%s@%s>\n",
meillo@0: 	       rcpt->local_part, rcpt->domain);
meillo@0:       }
meillo@0:     }
meillo@0:       
meillo@0:     /* rewrite return path
meillo@0:        if there is a table, use that
meillo@0:        if an address is found and if it has a domain, use that
meillo@0:     */
meillo@0:     if(route->map_return_path_addresses){
meillo@0:       address *ret_path = NULL;
meillo@0:       DEBUG(5) debugf("looking up %s in map_return_path_addresses\n",
meillo@0: 		      msg->return_path->local_part);
meillo@0:       ret_path =
meillo@0: 	(address *)table_find_fnmatch(route->map_return_path_addresses,
meillo@0: 			      msg->return_path->local_part);
meillo@0:       if(ret_path){
meillo@0: 	DEBUG(5) debugf("found <%s@%s>\n",
meillo@0: 			ret_path->local_part, ret_path->domain); 
meillo@0: 	if(ret_path->domain == NULL)
meillo@0: 	  ret_path->domain =
meillo@0: 	    route->set_return_path_domain ?
meillo@0: 	    route->set_return_path_domain : msg->return_path->domain;
meillo@0: 	msgout->return_path = copy_address(ret_path);
meillo@0:       }
meillo@0:     }
meillo@0:     if(msgout->return_path == NULL){
meillo@0:       DEBUG(5) debugf("setting return path to %s\n",
meillo@0: 		      route->set_return_path_domain);
meillo@0:       msgout->return_path =
meillo@0: 	copy_modify_address(msg->return_path,
meillo@0: 			    NULL, route->set_return_path_domain);
meillo@0:     }
meillo@0:     rewrite_headers(msgout, route);
meillo@0: 
meillo@0:     return msgout;
meillo@0:   }
meillo@0:   return NULL;
meillo@0: }
meillo@0: 
meillo@0: /* put msgout's is msgout_list into bins (msgout_perhost structs) for each
meillo@0:    host. Used if there is no mail_host.
meillo@0:    route param is not used, we leave it here because that may change.
meillo@0:  */
meillo@0: 
meillo@0: GList *route_msgout_list(connect_route *route, GList *msgout_list)
meillo@0: {
meillo@0:   GList *mo_ph_list = NULL;
meillo@0:   GList *msgout_node;
meillo@0: 
meillo@0:   foreach(msgout_list, msgout_node){
meillo@0:     msg_out *msgout = (msg_out *)(msgout_node->data);
meillo@0:     msg_out *msgout_new;
meillo@0:     GList *rcpt_list = msgout->rcpt_list;
meillo@0:     GList *rcpt_node;
meillo@0: 
meillo@0:     foreach(rcpt_list, rcpt_node){
meillo@0:       address *rcpt = rcpt_node->data;
meillo@0:       msgout_perhost *mo_ph = NULL;
meillo@0:       GList *mo_ph_node = NULL;
meillo@0: 
meillo@0:       /* search host in mo_ph_list */
meillo@0:       foreach(mo_ph_list, mo_ph_node){
meillo@0: 	mo_ph = (msgout_perhost *)(mo_ph_node->data);
meillo@0: 	if(strcasecmp(mo_ph->host, rcpt->domain) == 0)
meillo@0: 	  break;
meillo@0:       }
meillo@0:       if(mo_ph_node != NULL){
meillo@0: 	/* there is already a rcpt for this host */
meillo@0: 	msg_out *msgout_last =
meillo@0: 	  (msg_out *)((g_list_last(mo_ph->msgout_list))->data);
meillo@0: 	if(msgout_last->msg == msgout->msg){
meillo@0: 	  /* if it is also the same message, it must be the last one
meillo@0: 	     appended to mo_ph->msgout_list (since outer loop goes through
meillo@0: 	     msgout_list) */
meillo@0: 	  msgout_last->rcpt_list =
meillo@0: 	    g_list_append(msgout_last->rcpt_list, rcpt);
meillo@0: 	}else{
meillo@0: 	  /* if not, we append a new msgout */
meillo@0: 	  /* make a copy of msgout */
meillo@0: 	  msgout_new = create_msg_out(msgout->msg);
meillo@0: 	  msgout_new->return_path = msgout->return_path;
meillo@0: 	  msgout_new->hdr_list = msgout->hdr_list;
meillo@0: 
meillo@0: 	  /* append our rcpt to it */
meillo@0: 	  /* It is the 1st rcpt for this msg to this host,
meillo@0: 	     therefore we safely give NULL */
meillo@0: 	  msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@0: 	  mo_ph->msgout_list =
meillo@0: 	    g_list_append(mo_ph->msgout_list, msgout_new);
meillo@0: 	}
meillo@0:       }else{
meillo@0: 	/* this rcpt to goes to another host */
meillo@0: 	mo_ph = create_msgout_perhost(rcpt->domain);
meillo@0: 	mo_ph_list = g_list_append(mo_ph_list, mo_ph);
meillo@0: 
meillo@0: 	/* make a copy of msgout */
meillo@0: 	msgout_new = create_msg_out(msgout->msg);
meillo@0: 	msgout_new->return_path = msgout->return_path;
meillo@0: 	msgout_new->hdr_list = msgout->hdr_list;
meillo@0: 	    
meillo@0: 	/* append our rcpt to it */
meillo@0: 	/* It is the 1st rcpt for this msg to this host,
meillo@0: 	   therefore we safely give NULL */
meillo@0: 	msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@0: 	mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@0:       }/* if mo_ph != NULL */
meillo@0:     }/* foreach(rcpt_list, ... */
meillo@0:   }/* foreach(msgout_list, ... */
meillo@0: 
meillo@0:   return mo_ph_list;
meillo@0: }