masqmail

view src/alias.c @ 113:c93023f58cc7

find changesets by author, revision, files, or words in the commit message
Paolo's code and vanilla code differs what is the correct way? Someone should check. ;-)
author meillo@marmaro.de
date Wed, 30 Jun 2010 13:23:49 +0200
parents 26e34ae9a3e3
children a80ebfa16cd5
line source
1 /* MasqMail
2 Copyright (C) 2000-2001 Oliver Kurth
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19 #include "masqmail.h"
20 #include <fnmatch.h>
21
22 gboolean
23 addr_is_local(address * addr)
24 {
25 GList *dom_node;
26 GList *addr_node;
27 address *a;
28
29 foreach(conf.local_hosts, dom_node) {
30 if (addr->domain == NULL)
31 return TRUE;
32 if (fnmatch(dom_node->data, addr->domain, FNM_CASEFOLD) == 0) {
33 foreach(conf.not_local_addresses, addr_node) {
34 a = create_address_qualified(addr_node->data, TRUE, conf.host_name);
35 if (addr_isequal(a, addr)) {
36 destroy_address(a);
37 return FALSE;
38 }
39 destroy_address(a);
40 }
41 return TRUE;
42 }
43 }
44 foreach(conf.local_addresses, addr_node) {
45 a = create_address_qualified(addr_node->data, TRUE, conf.host_name);
46 if (addr_isequal(a, addr)) {
47 destroy_address(a);
48 return TRUE;
49 }
50 destroy_address(a);
51 }
52 return FALSE;
53 }
54
55 static gboolean
56 addr_isequal_alias(address * addr1, address * addr2)
57 {
58 return (conf.alias_local_cmp(addr1->local_part, addr2->local_part) == 0)
59 && (strcasecmp(addr1->domain, addr2->domain) == 0);
60 }
61
62 static GList*
63 parse_list(gchar * line)
64 {
65 GList *list = NULL;
66 gchar buf[256];
67 gchar *p, *q;
68
69 p = line;
70 while (*p != '\0') {
71 q = buf;
72 while (isspace(*p))
73 p++;
74 if (*p != '\"') {
75 while (*p && (*p != ',') && (q < buf + 255))
76 *(q++) = *(p++);
77 *q = '\0';
78 } else {
79 gboolean escape = FALSE;
80 p++;
81 while (*p && (*p != '\"' || escape) && (q < buf + 255)) {
82 if ((*p == '\\') && !escape)
83 escape = TRUE;
84 else {
85 escape = FALSE;
86 *(q++) = *p;
87 }
88 p++;
89 }
90 *q = '\0';
91 while (*p && (*p != ','))
92 p++;
93 }
94 list = g_list_append(list, g_strdup(g_strchomp(buf)));
95 if (*p)
96 p++;
97 }
98 return list;
99 }
100
101 GList*
102 alias_expand(GList * alias_table, GList * rcpt_list, GList * non_rcpt_list)
103 {
104 GList *done_list = NULL;
105 GList *rcpt_node = g_list_copy(rcpt_list);
106
107 while (rcpt_node != NULL) {
108 address *addr = (address *) (rcpt_node->data);
109 DEBUG(5) debugf("alias_expand begin: '%s@%s'\n", addr->local_part, addr->domain);
110 /* if(addr_is_local(addr) && (addr->local_part[0] != '|') && */
111 if (addr_is_local(addr) && !(addr->flags & ADDR_FLAG_NOEXPAND)) {
112 gchar *val;
113
114 /* special handling for postmaster */
115 if (strcasecmp(addr->local_part, "postmaster") == 0)
116 val = (gchar *) table_find_func(alias_table, addr->local_part, strcasecmp);
117 else
118 val = (gchar *) table_find_func(alias_table, addr->local_part, conf.alias_local_cmp);
119
120 DEBUG(5) debugf("alias: '%s' is local\n", addr->local_part);
121 if (val != NULL) {
122 GList *val_list = parse_list(val);
123 GList *val_node;
124 GList *alias_list = NULL;
125
126 DEBUG(5) debugf("alias: '%s' -> '%s'\n", addr->local_part, val);
127 foreach(val_list, val_node) {
128 gchar *val = (gchar *) (val_node->data);
129 address *alias_addr;
130 address *addr_parent = NULL;
131
132 if (val[0] == '|') {
133 DEBUG(5) debugf("alias: %s is a pipe address\n", val);
134 alias_addr = create_address_pipe(val);
135 DEBUG(5) debugf("alias_pipe: %s is a pipe address\n", alias_addr->local_part);
136 } else if (val[0] == '\\') {
137 DEBUG(5) debugf("alias: shall not be expanded: '%s'\n", val);
138 alias_addr = create_address_qualified(&(val[1]), TRUE, conf.host_name);
139 alias_addr->flags |= ADDR_FLAG_NOEXPAND;
140 DEBUG(5) debugf("alias: not expanded: '%s'\n", alias_addr->local_part);
141 } else {
142 alias_addr = create_address_qualified(val, TRUE, conf.host_name);
143
144 /* search in parents for loops: */
145 for (addr_parent = addr; addr_parent; addr_parent = addr_parent->parent) {
146 if (addr_isequal_alias (alias_addr, addr_parent)) {
147 logwrite(LOG_ALERT,
148 "detected alias loop, (ignoring): %s@%s -> %s@%s\n",
149 addr_parent->local_part,
150 addr_parent->domain,
151 addr->local_part, addr->domain);
152 break;
153 }
154 }
155 }
156 if (!addr_parent) {
157 alias_list = g_list_append(alias_list, alias_addr);
158 alias_addr->parent = addr;
159 }
160 g_free(val);
161 }
162 g_list_free(val_list);
163 addr->children = g_list_copy(alias_list);
164 rcpt_node = g_list_concat(rcpt_node, alias_list);
165 } else {
166 DEBUG(5) debugf("alias: '%s' is completed\n", addr->local_part);
167 done_list = g_list_append(done_list, addr);
168 }
169 } else {
170 DEBUG(5) debugf("alias: '%s@%s' is not local\n", addr->local_part, addr->domain);
171 done_list = g_list_append(done_list, addr);
172 }
173 rcpt_node = g_list_next(rcpt_node);
174 }
175
176 /* delete addresses from done_list if they are in the non_rcpt_list */
177 if (non_rcpt_list) {
178 GList *rcpt_node_next;
179 for (rcpt_node = g_list_first(done_list); rcpt_node; rcpt_node = rcpt_node_next) {
180 address *addr = (address *) (rcpt_node->data);
181 GList *non_node;
182
183 rcpt_node_next = g_list_next(rcpt_node);
184
185 foreach(non_rcpt_list, non_node) {
186 address *non_addr = (address *) (non_node->data);
187 if (addr_isequal(addr, non_addr)) {
188 done_list = g_list_remove_link(done_list, rcpt_node);
189 g_list_free_1(rcpt_node);
190 addr_mark_delivered(addr); /* this address is still in the children lists of the original address */
191 break;
192 }
193 }
194 }
195 }
196 return done_list;
197 }