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@15: #include <fnmatch.h>
meillo@15: 
meillo@0: #include "masqmail.h"
meillo@0: 
meillo@10: msgout_perhost*
meillo@10: create_msgout_perhost(gchar * host)
meillo@0: {
meillo@10: 	msgout_perhost *mo_ph = g_malloc(sizeof(msgout_perhost));
meillo@10: 	if (mo_ph) {
meillo@10: 		mo_ph->host = g_strdup(host);
meillo@10: 		mo_ph->msgout_list = NULL;
meillo@10: 	}
meillo@10: 	return mo_ph;
meillo@0: }
meillo@0: 
meillo@10: void
meillo@10: destroy_msgout_perhost(msgout_perhost * mo_ph)
meillo@0: {
meillo@10: 	GList *mo_node;
meillo@0: 
meillo@10: 	foreach(mo_ph->msgout_list, mo_node) {
meillo@10: 		msg_out *mo = (msg_out *) (mo_node->data);
meillo@10: 		/* the rcpt_list is owned by the msgout's, but not the rcpt's themselves */
meillo@10: 		g_list_free(mo->rcpt_list);
meillo@10: 		g_free(mo);
meillo@10: 	}
meillo@10: 	g_list_free(mo_ph->msgout_list);
meillo@10: 	g_free(mo_ph);
meillo@0: }
meillo@0: 
meillo@10: void
meillo@10: rewrite_headers(msg_out * msgout, connect_route * route)
meillo@0: {
meillo@10: 	/* if set_h_from_domain is set, replace domain in all
meillo@10: 	   From: headers.
meillo@10: 	 */
meillo@10: 	msgout->hdr_list = g_list_copy(msgout->msg->hdr_list);
meillo@0: 
meillo@10: 	/* map from addresses */
meillo@10: 	if (route->map_h_from_addresses != NULL) {
meillo@10: 		GList *hdr_node;
meillo@10: 		foreach(msgout->hdr_list, hdr_node) {
meillo@10: 			header *hdr = (header *) (hdr_node->data);
meillo@10: 			if (hdr->id == HEAD_FROM) {
meillo@10: 				header *new_hdr = copy_header(hdr);
meillo@10: 				if (map_address_header(new_hdr, route->map_h_from_addresses)) {
meillo@10: 					hdr_node->data = new_hdr;
meillo@10: 					/* we need this list only to carefully free the extra headers: */
meillo@10: 					msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10: 				} else
meillo@10: 					g_free(new_hdr);
meillo@10: 			}
meillo@10: 		}
meillo@10: 	} else {
meillo@10: 		/* replace from domain */
meillo@10: 		if (route->set_h_from_domain != NULL) {
meillo@10: 			GList *hdr_node;
meillo@10: 
meillo@10: 			foreach(msgout->hdr_list, hdr_node) {
meillo@10: 				header *hdr = (header *) (hdr_node->data);
meillo@10: 				if (hdr->id == HEAD_FROM) {
meillo@10: 					header *new_hdr = copy_header(hdr);
meillo@10: 
meillo@10: 					DEBUG(5) debugf("setting From: domain to %s\n", route->set_h_from_domain);
meillo@10: 					if (set_address_header_domain(new_hdr, route->set_h_from_domain)) {
meillo@10: 						hdr_node->data = new_hdr;
meillo@10: 						/* we need this list only to carefully free the extra headers: */
meillo@10: 						DEBUG(6) debugf("header = %s\n", new_hdr->header);
meillo@10: 						msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10: 					} else {
meillo@15: 						logwrite(LOG_ALERT, "error in set_address_header_domain(%s, %s)\n",
meillo@15: 						         new_hdr->value, route->set_h_from_domain);
meillo@10: 					}
meillo@10: 				}
meillo@10: 			}
meillo@10: 		}
meillo@0: 	}
meillo@0: 
meillo@10: 	/* map reply-to addresses */
meillo@10: 	if (route->map_h_reply_to_addresses != NULL) {
meillo@10: 		GList *hdr_node;
meillo@10: 		foreach(msgout->hdr_list, hdr_node) {
meillo@10: 			header *hdr = (header *) (hdr_node->data);
meillo@10: 			if (hdr->id == HEAD_REPLY_TO) {
meillo@10: 				header *new_hdr = copy_header(hdr);
meillo@10: 				if (map_address_header
meillo@10: 					(new_hdr, route->map_h_reply_to_addresses)) {
meillo@10: 					hdr_node->data = new_hdr;
meillo@10: 					/* we need this list only to carefully free the extra headers: */
meillo@10: 					msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10: 				} else
meillo@10: 					g_free(new_hdr);
meillo@10: 			}
meillo@10: 		}
meillo@10: 	} else {
meillo@10: 		/* replace Reply-to domain */
meillo@10: 		if (route->set_h_reply_to_domain != NULL) {
meillo@10: 			GList *hdr_node;
meillo@10: 
meillo@10: 			foreach(msgout->hdr_list, hdr_node) {
meillo@10: 				header *hdr = (header *) (hdr_node->data);
meillo@10: 				if (hdr->id == HEAD_REPLY_TO) {
meillo@10: 					header *new_hdr = copy_header(hdr);
meillo@10: 
meillo@10: 					set_address_header_domain(new_hdr, route-> set_h_reply_to_domain);
meillo@10: 					hdr_node->data = new_hdr;
meillo@10: 					/* we need this list only to carefully free the extra headers: */
meillo@10: 					msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10: 				}
meillo@10: 			}
meillo@10: 		}
meillo@0: 	}
meillo@0: 
meillo@10: 	/* map Mail-Followup-To addresses */
meillo@10: 	if (route->map_h_mail_followup_to_addresses != NULL) {
meillo@10: 		GList *hdr_node;
meillo@10: 		foreach(msgout->hdr_list, hdr_node) {
meillo@10: 			header *hdr = (header *) (hdr_node->data);
meillo@10: 			if (strncasecmp(hdr->header, "Mail-Followup-To", 16) == 0) {
meillo@10: 				header *new_hdr = copy_header(hdr);
meillo@10: 				if (map_address_header(new_hdr, route->map_h_mail_followup_to_addresses)) {
meillo@10: 					hdr_node->data = new_hdr;
meillo@10: 					/* we need this list only to carefully free the extra headers: */
meillo@10: 					msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10: 				} else
meillo@10: 					g_free(new_hdr);
meillo@10: 			}
meillo@10: 		}
meillo@10: 	}
meillo@0: 
meillo@10: 	/* set Sender: domain to return_path->domain */
meillo@10: 	if (route->expand_h_sender_domain) {
meillo@10: 		GList *hdr_node;
meillo@0: 
meillo@10: 		foreach(msgout->hdr_list, hdr_node) {
meillo@10: 			header *hdr = (header *) (hdr_node->data);
meillo@10: 			if (hdr->id == HEAD_SENDER) {
meillo@10: 				header *new_hdr = copy_header(hdr);
meillo@0: 
meillo@10: 				set_address_header_domain(new_hdr, msgout->return_path->domain);
meillo@10: 				hdr_node->data = new_hdr;
meillo@10: 				/* we need this list only to carefully free the extra headers: */
meillo@10: 				msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10: 			}
meillo@10: 		}
meillo@10: 	}
meillo@0: 
meillo@10: 	/* set Sender: domain to return_path->domain */
meillo@10: 	if (route->expand_h_sender_address) {
meillo@10: 		GList *hdr_node;
meillo@0: 
meillo@10: 		foreach(msgout->hdr_list, hdr_node) {
meillo@10: 			header *hdr = (header *) (hdr_node->data);
meillo@10: 			if (hdr->id == HEAD_SENDER) {
meillo@10: 				header *new_hdr;
meillo@0: 
meillo@15: 				new_hdr = create_header(HEAD_SENDER, "Sender: %s@%s\n",
meillo@15: 				                        msgout->return_path->local_part, msgout->return_path->domain);
meillo@10: 				hdr_node->data = new_hdr;
meillo@10: 				/* we need this list only to carefully free the extra headers: */
meillo@10: 				msgout->xtra_hdr_list = g_list_append(msgout->xtra_hdr_list, new_hdr);
meillo@10: 			}
meillo@10: 		}
meillo@10: 	}
meillo@0: 
meillo@10: 	if (msgout->xtra_hdr_list == NULL) {
meillo@10: 		/* nothing was changed */
meillo@10: 		g_list_free(msgout->hdr_list);
meillo@10: 		msgout->hdr_list = NULL;
meillo@10: 	}
meillo@10: 	DEBUG(5) debugf("rewrite_headers() returning\n");
meillo@0: }
meillo@0: 
meillo@10: void
meillo@10: rcptlist_with_one_of_hostlist(GList * rcpt_list, GList * host_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list)
meillo@0: {
meillo@10: 	GList *rcpt_node;
meillo@0: 
meillo@10: 	if (rcpt_list == NULL)
meillo@10: 		return;
meillo@0: 
meillo@10: 	foreach(rcpt_list, rcpt_node) {
meillo@10: 		address *rcpt = (address *) (rcpt_node->data);
meillo@10: 		GList *host_node = NULL;
meillo@0: 
meillo@10: 		foreach(host_list, host_node) {
meillo@10: 			gchar *host = (gchar *) (host_node->data);
meillo@10: 			if (fnmatch(host, rcpt->domain, FNM_CASEFOLD) == 0)
meillo@10: 				break;
meillo@10: 		}
meillo@10: 		if (host_node) {
meillo@10: 			if (p_rcpt_list)
meillo@10: 				*p_rcpt_list = g_list_append(*p_rcpt_list, rcpt);
meillo@10: 		} else {
meillo@10: 			if (p_non_rcpt_list)
meillo@10: 				*p_non_rcpt_list = g_list_append(*p_non_rcpt_list, rcpt);
meillo@10: 		}
meillo@0: 
meillo@10: 	}
meillo@0: }
meillo@0: 
meillo@10: void
meillo@10: rcptlist_with_addr_is_local(GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list)
meillo@0: {
meillo@10: 	GList *rcpt_node;
meillo@0: 
meillo@10: 	if (rcpt_list == NULL)
meillo@10: 		return;
meillo@0: 
meillo@10: 	foreach(rcpt_list, rcpt_node) {
meillo@10: 		address *rcpt = (address *) (rcpt_node->data);
meillo@10: 		if (addr_is_local(rcpt)) {
meillo@10: 			if (p_rcpt_list)
meillo@10: 				*p_rcpt_list = g_list_append(*p_rcpt_list, rcpt);
meillo@10: 		} else {
meillo@10: 			if (p_non_rcpt_list)
meillo@10: 				*p_non_rcpt_list = g_list_append(*p_non_rcpt_list, rcpt);
meillo@10: 		}
meillo@0: 
meillo@10: 	}
meillo@0: }
meillo@0: 
meillo@10: static gint
meillo@10: _g_list_addrcmp(gconstpointer a, gconstpointer b)
meillo@0: {
meillo@10: 	return addr_match((address *) a, (address *) b);
meillo@0: }
meillo@0: 
meillo@10: gboolean
meillo@10: route_is_allowed_return_path(connect_route * route, address * ret_path)
meillo@0: {
meillo@10: 	if (route->not_allowed_return_paths != NULL) {
meillo@10: 		if (g_list_find_custom(route->not_allowed_return_paths, ret_path, _g_list_addrcmp) != NULL) {
meillo@10: 			return FALSE;
meillo@10: 		}
meillo@10: 	}
meillo@10: 	if (route->allowed_return_paths != NULL) {
meillo@10: 		if (g_list_find_custom(route->allowed_return_paths, ret_path, _g_list_addrcmp) != NULL) {
meillo@10: 			return TRUE;
meillo@10: 		} else {
meillo@10: 			return FALSE;
meillo@10: 		}
meillo@10: 	}
meillo@10: 	return TRUE;
meillo@0: }
meillo@0: 
meillo@10: static gint
meillo@10: _g_list_strcmp(gconstpointer a, gconstpointer b)
meillo@0: {
meillo@10: 	return (gint) strcmp(a, b);
meillo@0: }
meillo@0: 
meillo@10: gboolean
meillo@10: route_is_allowed_mail_local(connect_route * route, address * ret_path)
meillo@0: {
meillo@10: 	gchar *loc_part = ret_path->local_part;
meillo@0: 
meillo@10: 	if (route->not_allowed_mail_locals != NULL) {
meillo@10: 		if (g_list_find_custom(route->not_allowed_mail_locals, loc_part, _g_list_strcmp) != NULL)
meillo@10: 			return FALSE;
meillo@10: 	}
meillo@10: 	if (route->allowed_mail_locals != NULL) {
meillo@10: 		if (g_list_find_custom(route->allowed_mail_locals, loc_part, _g_list_strcmp) != NULL)
meillo@10: 			return TRUE;
meillo@10: 		else
meillo@10: 			return FALSE;
meillo@10: 	}
meillo@10: 	return TRUE;
meillo@0: }
meillo@0: 
meillo@10: /*
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@10: void
meillo@10: msg_rcptlist_route(connect_route * route, GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list)
meillo@0: {
meillo@10: 	GList *tmp_list = NULL;
meillo@10: 	/* sort out those domains that can be sent over this connection: */
meillo@10: 	if (route->allowed_rcpt_domains) {
meillo@10: 		DEBUG(5) debugf("testing for route->allowed_rcpt_domains\n");
meillo@10: 		rcptlist_with_one_of_hostlist(rcpt_list, route->allowed_rcpt_domains, &tmp_list, p_non_rcpt_list);
meillo@10: 	} else {
meillo@10: 		DEBUG(5) debugf("route->allowed_rcpt_domains == NULL\n");
meillo@10: 		tmp_list = g_list_copy(rcpt_list);
meillo@10: 	}
meillo@0: 
meillo@10: 	/* sort out those domains that cannot be sent over this connection: */
meillo@10: 	rcptlist_with_one_of_hostlist(tmp_list, route->not_allowed_rcpt_domains, p_non_rcpt_list, p_rcpt_list);
meillo@10: 	g_list_free(tmp_list);
meillo@0: }
meillo@0: 
meillo@10: msg_out*
meillo@10: route_prepare_msgout(connect_route * route, msg_out * msgout)
meillo@0: {
meillo@10: 	message *msg = msgout->msg;
meillo@10: 	GList *rcpt_list = msgout->rcpt_list;
meillo@0: 
meillo@10: 	if (rcpt_list != NULL) {
meillo@10: 		/* found a few */
meillo@10: 		DEBUG(5) {
meillo@10: 			GList *node;
meillo@10: 			debugf("rcpts for routed delivery, route = %s, id = %s\n", route->name, msg->uid);
meillo@10: 			foreach(rcpt_list, node) {
meillo@10: 				address *rcpt = (address *) (node->data);
meillo@114: 				debugf("  rcpt for routed delivery: <%s@%s>\n",
meillo@114: 				       rcpt->local_part, rcpt->domain);
meillo@10: 			}
meillo@10: 		}
meillo@0: 
meillo@15: 		/* rewrite return path if there is a table, use that
meillo@10: 		   if an address is found and if it has a domain, use that
meillo@10: 		 */
meillo@10: 		if (route->map_return_path_addresses) {
meillo@10: 			address *ret_path = NULL;
meillo@10: 			DEBUG(5) debugf("looking up %s in map_return_path_addresses\n", msg->return_path->local_part);
meillo@10: 			ret_path = (address *) table_find_fnmatch(route->map_return_path_addresses, msg->return_path->local_part);
meillo@10: 			if (ret_path) {
meillo@10: 				DEBUG(5) debugf("found <%s@%s>\n", ret_path->local_part, ret_path->domain);
meillo@10: 				if (ret_path->domain == NULL)
meillo@10: 					ret_path->domain = route->set_return_path_domain
meillo@10: 					                   ? route->set_return_path_domain
meillo@10: 					                   : msg->return_path->domain;
meillo@10: 				msgout->return_path = copy_address(ret_path);
meillo@10: 			}
meillo@10: 		}
meillo@10: 		if (msgout->return_path == NULL) {
meillo@10: 			DEBUG(5) debugf("setting return path to %s\n", route->set_return_path_domain);
meillo@10: 			msgout->return_path = copy_modify_address(msg->return_path, NULL, route->set_return_path_domain);
meillo@10: 		}
meillo@10: 		rewrite_headers(msgout, route);
meillo@10: 
meillo@10: 		return msgout;
meillo@10: 	}
meillo@10: 	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@10: GList*
meillo@10: route_msgout_list(connect_route * route, GList * msgout_list)
meillo@0: {
meillo@10: 	GList *mo_ph_list = NULL;
meillo@10: 	GList *msgout_node;
meillo@0: 
meillo@10: 	foreach(msgout_list, msgout_node) {
meillo@10: 		msg_out *msgout = (msg_out *) (msgout_node->data);
meillo@10: 		msg_out *msgout_new;
meillo@10: 		GList *rcpt_list = msgout->rcpt_list;
meillo@10: 		GList *rcpt_node;
meillo@0: 
meillo@10: 		foreach(rcpt_list, rcpt_node) {
meillo@10: 			address *rcpt = rcpt_node->data;
meillo@10: 			msgout_perhost *mo_ph = NULL;
meillo@10: 			GList *mo_ph_node = NULL;
meillo@0: 
meillo@10: 			/* search host in mo_ph_list */
meillo@10: 			foreach(mo_ph_list, mo_ph_node) {
meillo@10: 				mo_ph = (msgout_perhost *) (mo_ph_node->data);
meillo@10: 				if (strcasecmp(mo_ph->host, rcpt->domain) == 0)
meillo@10: 					break;
meillo@10: 			}
meillo@10: 			if (mo_ph_node != NULL) {
meillo@10: 				/* there is already a rcpt for this host */
meillo@10: 				msg_out *msgout_last = (msg_out *) ((g_list_last(mo_ph->msgout_list))->data);
meillo@10: 				if (msgout_last->msg == msgout->msg) {
meillo@15: 					/* if it is also the same message, it must be the last one appended
meillo@15: 					   to mo_ph->msgout_list (since outer loop goes through msgout_list) */
meillo@10: 					msgout_last->rcpt_list = g_list_append(msgout_last->rcpt_list, rcpt);
meillo@10: 				} else {
meillo@10: 					/* if not, we append a new msgout */
meillo@10: 					/* make a copy of msgout */
meillo@10: 					msgout_new = create_msg_out(msgout->msg);
meillo@10: 					msgout_new->return_path = msgout->return_path;
meillo@10: 					msgout_new->hdr_list = msgout->hdr_list;
meillo@0: 
meillo@10: 					/* append our rcpt to it */
meillo@10: 					/* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10: 					msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10: 					mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10: 				}
meillo@10: 			} else {
meillo@10: 				/* this rcpt to goes to another host */
meillo@10: 				mo_ph = create_msgout_perhost(rcpt->domain);
meillo@10: 				mo_ph_list = g_list_append(mo_ph_list, mo_ph);
meillo@0: 
meillo@10: 				/* make a copy of msgout */
meillo@10: 				msgout_new = create_msg_out(msgout->msg);
meillo@10: 				msgout_new->return_path = msgout->return_path;
meillo@10: 				msgout_new->hdr_list = msgout->hdr_list;
meillo@0: 
meillo@10: 				/* append our rcpt to it */
meillo@10: 				/* It is the 1st rcpt for this msg to this host, therefore we safely give NULL */
meillo@10: 				msgout_new->rcpt_list = g_list_append(NULL, rcpt);
meillo@10: 				mo_ph->msgout_list = g_list_append(mo_ph->msgout_list, msgout_new);
meillo@10: 			}  /* if mo_ph != NULL */
meillo@10: 		}  /* foreach(rcpt_list, ... */
meillo@10: 	}  /* foreach(msgout_list, ... */
meillo@10: 
meillo@10: 	return mo_ph_list;
meillo@0: }