1 /* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */
2
3 #include "lib.h"
4 #include "buffer.h"
5 #include "hostpid.h"
6 #include "settings-parser.h"
7 #include "service-settings.h"
8 #include "mail-storage-settings.h"
9 #include "smtp-submit-settings.h"
10 #include "imap-settings.h"
11
12 #include <stddef.h>
13 #include <unistd.h>
14
15 static bool imap_settings_verify(void *_set, pool_t pool,
16 const char **error_r);
17
18 /* <settings checks> */
19 static struct file_listener_settings imap_unix_listeners_array[] = {
20 { "login/imap", 0666, "", "" },
21 { "imap-master", 0600, "", "" }
22 };
23 static struct file_listener_settings *imap_unix_listeners[] = {
24 &imap_unix_listeners_array[0],
25 &imap_unix_listeners_array[1]
26 };
27 static buffer_t imap_unix_listeners_buf = {
28 { { imap_unix_listeners, sizeof(imap_unix_listeners) } }
29 };
30 /* </settings checks> */
31
32 struct service_settings imap_service_settings = {
33 .name = "imap",
34 .protocol = "imap",
35 .type = "",
36 .executable = "imap",
37 .user = "",
38 .group = "",
39 .privileged_group = "",
40 .extra_groups = "$default_internal_group",
41 .chroot = "",
42
43 .drop_priv_before_exec = FALSE,
44
45 .process_min_avail = 0,
46 .process_limit = 1024,
47 .client_limit = 1,
48 .service_count = 1,
49 .idle_kill = 0,
50 .vsz_limit = UOFF_T_MAX,
51
52 .unix_listeners = { { &imap_unix_listeners_buf,
53 sizeof(imap_unix_listeners[0]) } },
54 .fifo_listeners = ARRAY_INIT,
55 .inet_listeners = ARRAY_INIT
56 };
57
58 #undef DEF
59 #undef DEFLIST
60 #define DEF(type, name) \
61 SETTING_DEFINE_STRUCT_##type(#name, name, struct imap_settings)
62 #define DEFLIST(field, name, defines) \
63 { .type = SET_DEFLIST, .key = name, \
64 .offset = offsetof(struct imap_settings, field), \
65 .list_info = defines }
66
67 static const struct setting_define imap_setting_defines[] = {
68 DEF(BOOL, verbose_proctitle),
69 DEF(STR_VARS, rawlog_dir),
70
71 DEF(SIZE, imap_max_line_length),
72 DEF(TIME, imap_idle_notify_interval),
73 DEF(STR, imap_capability),
74 DEF(STR, imap_client_workarounds),
75 DEF(STR, imap_logout_format),
76 DEF(STR, imap_id_send),
77 DEF(STR, imap_id_log),
78 DEF(ENUM, imap_fetch_failure),
79 DEF(BOOL, imap_metadata),
80 DEF(BOOL, imap_literal_minus),
81 DEF(TIME, imap_hibernate_timeout),
82
83 DEF(STR, imap_urlauth_host),
84 DEF(IN_PORT, imap_urlauth_port),
85
86 SETTING_DEFINE_LIST_END
87 };
88
89 static const struct imap_settings imap_default_settings = {
90 .verbose_proctitle = FALSE,
91 .rawlog_dir = "",
92
93 /* RFC-2683 recommends at least 8000 bytes. Some clients however don't
94 break large message sets to multiple commands, so we're pretty
95 liberal by default. */
96 .imap_max_line_length = 64*1024,
97 .imap_idle_notify_interval = 2*60,
98 .imap_capability = "",
99 .imap_client_workarounds = "",
100 .imap_logout_format = "in=%i out=%o deleted=%{deleted} "
101 "expunged=%{expunged} trashed=%{trashed} "
102 "hdr_count=%{fetch_hdr_count} hdr_bytes=%{fetch_hdr_bytes} "
103 "body_count=%{fetch_body_count} body_bytes=%{fetch_body_bytes}",
104 .imap_id_send = "name *",
105 .imap_id_log = "",
106 .imap_fetch_failure = "disconnect-immediately:disconnect-after:no-after",
107 .imap_metadata = FALSE,
108 .imap_literal_minus = FALSE,
109 .imap_hibernate_timeout = 0,
110
111 .imap_urlauth_host = "",
112 .imap_urlauth_port = 143
113 };
114
115 static const struct setting_parser_info *imap_setting_dependencies[] = {
116 &mail_user_setting_parser_info,
117 &smtp_submit_setting_parser_info,
118 NULL
119 };
120
121 const struct setting_parser_info imap_setting_parser_info = {
122 .module_name = "imap",
123 .defines = imap_setting_defines,
124 .defaults = &imap_default_settings,
125
126 .type_offset = SIZE_MAX,
127 .struct_size = sizeof(struct imap_settings),
128
129 .parent_offset = SIZE_MAX,
130
131 .check_func = imap_settings_verify,
132 .dependencies = imap_setting_dependencies
133 };
134
135 /* <settings checks> */
136 struct imap_client_workaround_list {
137 const char *name;
138 enum imap_client_workarounds num;
139 };
140
141 static const struct imap_client_workaround_list imap_client_workaround_list[] = {
142 { "delay-newmail", WORKAROUND_DELAY_NEWMAIL },
143 { "tb-extra-mailbox-sep", WORKAROUND_TB_EXTRA_MAILBOX_SEP },
144 { "tb-lsub-flags", WORKAROUND_TB_LSUB_FLAGS },
145 { NULL, 0 }
146 };
147
148 static int
imap_settings_parse_workarounds(struct imap_settings * set,const char ** error_r)149 imap_settings_parse_workarounds(struct imap_settings *set,
150 const char **error_r)
151 {
152 enum imap_client_workarounds client_workarounds = 0;
153 const struct imap_client_workaround_list *list;
154 const char *const *str;
155
156 str = t_strsplit_spaces(set->imap_client_workarounds, " ,");
157 for (; *str != NULL; str++) {
158 list = imap_client_workaround_list;
159 for (; list->name != NULL; list++) {
160 if (strcasecmp(*str, list->name) == 0) {
161 client_workarounds |= list->num;
162 break;
163 }
164 }
165 if (list->name == NULL) {
166 *error_r = t_strdup_printf("imap_client_workarounds: "
167 "Unknown workaround: %s", *str);
168 return -1;
169 }
170 }
171 set->parsed_workarounds = client_workarounds;
172 return 0;
173 }
174
175
176 static bool
imap_settings_verify(void * _set,pool_t pool ATTR_UNUSED,const char ** error_r)177 imap_settings_verify(void *_set, pool_t pool ATTR_UNUSED, const char **error_r)
178 {
179 struct imap_settings *set = _set;
180
181 if (imap_settings_parse_workarounds(set, error_r) < 0)
182 return FALSE;
183
184 if (strcmp(set->imap_fetch_failure, "disconnect-immediately") == 0)
185 set->parsed_fetch_failure = IMAP_CLIENT_FETCH_FAILURE_DISCONNECT_IMMEDIATELY;
186 else if (strcmp(set->imap_fetch_failure, "disconnect-after") == 0)
187 set->parsed_fetch_failure = IMAP_CLIENT_FETCH_FAILURE_DISCONNECT_AFTER;
188 else if (strcmp(set->imap_fetch_failure, "no-after") == 0)
189 set->parsed_fetch_failure = IMAP_CLIENT_FETCH_FAILURE_NO_AFTER;
190 else {
191 *error_r = t_strdup_printf("Unknown imap_fetch_failure: %s",
192 set->imap_fetch_failure);
193 return FALSE;
194 }
195 return TRUE;
196 }
197 /* </settings checks> */
198