1 /* $Cambridge: exim/src/src/readconf.c,v 1.2 2004/10/18 09:16:57 ph10 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2004 */
8 /* See the file NOTICE for conditions of use and distribution. */
10 /* Functions for reading the configuration file, and for displaying
11 overall configuration values. Thanks to Brian Candler for the original
12 implementation of the conditional .ifdef etc. */
16 #define CSTATE_STACK_SIZE 10
19 /* Structure for chain (stack) of .included files */
21 typedef struct config_file_item {
22 struct config_file_item *next;
28 /* Structure of table of conditional words and their state transitions */
30 typedef struct cond_item {
38 /* Structure of table of syslog facility names and values */
40 typedef struct syslog_fac_item {
46 /* Static variables */
48 static config_file_item *config_file_stack = NULL; /* For includes */
50 static uschar *syslog_facility_str = NULL;
51 static uschar next_section[24];
52 static uschar time_buffer[24];
54 /* State variables for conditional loading (.ifdef / .else / .endif) */
56 static int cstate = 0;
57 static int cstate_stack_ptr = -1;
58 static int cstate_stack[CSTATE_STACK_SIZE];
60 /* Table of state transitions for handling conditional inclusions. There are
61 four possible state transitions:
65 .elifdef true (or .else)
68 .endif just causes the previous cstate to be popped off the stack */
70 static int next_cstate[3][4] =
72 /* State 0: reading from file, or reading until next .else or .endif */
74 /* State 1: condition failed, skipping until next .else or .endif */
76 /* State 2: skipping until .endif */
80 /* Table of conditionals and the states to set. For each name, there are four
81 values: the length of the name (to save computing it each time), the state to
82 set if a macro was found in the line, the state to set if a macro was not found
83 in the line, and a stack manipulation setting which is:
85 -1 pull state value off the stack
86 0 don't alter the stack
87 +1 push value onto stack, before setting new state
90 static cond_item cond_list[] = {
91 { US"ifdef", 5, 0, 1, 1 },
92 { US"ifndef", 6, 1, 0, 1 },
93 { US"elifdef", 7, 2, 3, 0 },
94 { US"elifndef", 8, 3, 2, 0 },
95 { US"else", 4, 2, 2, 0 },
96 { US"endif", 5, 0, 0, -1 }
99 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
101 /* Table of syslog facility names and their values */
103 static syslog_fac_item syslog_list[] = {
104 { US"mail", LOG_MAIL },
105 { US"user", LOG_USER },
106 { US"news", LOG_NEWS },
107 { US"uucp", LOG_UUCP },
108 { US"local0", LOG_LOCAL0 },
109 { US"local1", LOG_LOCAL1 },
110 { US"local2", LOG_LOCAL2 },
111 { US"local3", LOG_LOCAL3 },
112 { US"local4", LOG_LOCAL4 },
113 { US"local5", LOG_LOCAL5 },
114 { US"local6", LOG_LOCAL6 },
115 { US"local7", LOG_LOCAL7 },
116 { US"daemon", LOG_DAEMON }
119 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
124 /*************************************************
125 * Main configuration options *
126 *************************************************/
128 /* The list of options that can be set in the main configuration file. This
129 must be in alphabetic order because it is searched by binary chop. */
131 static optionlist optionlist_config[] = {
132 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
133 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
134 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
135 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
136 { "accept_8bitmime", opt_bool, &accept_8bitmime },
137 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
138 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
139 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
140 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
141 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
142 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
143 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
144 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
145 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
146 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
147 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
148 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
150 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
152 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
153 { "admin_groups", opt_gidlist, &admin_groups },
154 { "allow_domain_literals", opt_bool, &allow_domain_literals },
155 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
156 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
157 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
158 { "auto_thaw", opt_time, &auto_thaw },
159 { "bi_command", opt_stringptr, &bi_command },
160 { "bounce_message_file", opt_stringptr, &bounce_message_file },
161 { "bounce_message_text", opt_stringptr, &bounce_message_text },
162 { "bounce_return_body", opt_bool, &bounce_return_body },
163 { "bounce_return_message", opt_bool, &bounce_return_message },
164 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
165 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
166 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
167 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
168 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
169 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
170 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
171 { "check_log_inodes", opt_int, &check_log_inodes },
172 { "check_log_space", opt_Kint, &check_log_space },
173 { "check_spool_inodes", opt_int, &check_spool_inodes },
174 { "check_spool_space", opt_Kint, &check_spool_space },
175 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
176 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
177 { "delay_warning", opt_timelist, &delay_warning },
178 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
179 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
180 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
181 { "delivery_date_remove", opt_bool, &delivery_date_remove },
182 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
183 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
184 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
185 { "dns_retrans", opt_time, &dns_retrans },
186 { "dns_retry", opt_int, &dns_retry },
187 /* This option is now a no-op, retained for compability */
188 { "drop_cr", opt_bool, &drop_cr },
189 /*********************************************************/
190 { "envelope_to_remove", opt_bool, &envelope_to_remove },
191 { "errors_copy", opt_stringptr, &errors_copy },
192 { "errors_reply_to", opt_stringptr, &errors_reply_to },
193 { "exim_group", opt_gid, &exim_gid },
194 { "exim_path", opt_stringptr, &exim_path },
195 { "exim_user", opt_uid, &exim_uid },
196 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
197 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
198 { "finduser_retries", opt_int, &finduser_retries },
199 { "freeze_tell", opt_stringptr, &freeze_tell },
200 { "gecos_name", opt_stringptr, &gecos_name },
201 { "gecos_pattern", opt_stringptr, &gecos_pattern },
202 { "header_line_maxsize", opt_int, &header_line_maxsize },
203 { "header_maxsize", opt_int, &header_maxsize },
204 { "headers_charset", opt_stringptr, &headers_charset },
205 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
206 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
207 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
208 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
209 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
210 { "hold_domains", opt_stringptr, &hold_domains },
211 { "host_lookup", opt_stringptr, &host_lookup },
212 { "host_lookup_order", opt_stringptr, &host_lookup_order },
213 { "host_reject_connection", opt_stringptr, &host_reject_connection },
214 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
215 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
217 { "ibase_servers", opt_stringptr, &ibase_servers },
219 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
220 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
221 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
222 { "keep_malformed", opt_time, &keep_malformed },
224 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
225 { "ldap_version", opt_int, &eldap_version },
227 { "local_from_check", opt_bool, &local_from_check },
228 { "local_from_prefix", opt_stringptr, &local_from_prefix },
229 { "local_from_suffix", opt_stringptr, &local_from_suffix },
230 { "local_interfaces", opt_stringptr, &local_interfaces },
231 { "local_scan_timeout", opt_time, &local_scan_timeout },
232 { "local_sender_retain", opt_bool, &local_sender_retain },
233 { "localhost_number", opt_stringptr, &host_number_string },
234 { "log_file_path", opt_stringptr, &log_file_path },
235 { "log_selector", opt_stringptr, &log_selector_string },
236 { "log_timezone", opt_bool, &log_timezone },
237 { "lookup_open_max", opt_int, &lookup_open_max },
238 { "max_username_length", opt_int, &max_username_length },
239 { "message_body_visible", opt_mkint, &message_body_visible },
240 { "message_id_header_domain", opt_stringptr, &message_id_domain },
241 { "message_id_header_text", opt_stringptr, &message_id_text },
242 { "message_logs", opt_bool, &message_logs },
243 { "message_size_limit", opt_stringptr, &message_size_limit },
244 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
245 { "move_frozen_messages", opt_bool, &move_frozen_messages },
247 { "mua_wrapper", opt_bool, &mua_wrapper },
249 { "mysql_servers", opt_stringptr, &mysql_servers },
251 { "never_users", opt_uidlist, &never_users },
253 { "oracle_servers", opt_stringptr, &oracle_servers },
255 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
257 { "perl_at_start", opt_bool, &opt_perl_at_start },
258 { "perl_startup", opt_stringptr, &opt_perl_startup },
261 { "pgsql_servers", opt_stringptr, &pgsql_servers },
263 { "pid_file_path", opt_stringptr, &pid_file_path },
264 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
265 { "preserve_message_logs", opt_bool, &preserve_message_logs },
266 { "primary_hostname", opt_stringptr, &primary_hostname },
267 { "print_topbitchars", opt_bool, &print_topbitchars },
268 { "process_log_path", opt_stringptr, &process_log_path },
269 { "prod_requires_admin", opt_bool, &prod_requires_admin },
270 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
271 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
272 { "queue_domains", opt_stringptr, &queue_domains },
273 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
274 { "queue_only", opt_bool, &queue_only },
275 { "queue_only_file", opt_stringptr, &queue_only_file },
276 { "queue_only_load", opt_fixed, &queue_only_load },
277 { "queue_only_override", opt_bool, &queue_only_override },
278 { "queue_run_in_order", opt_bool, &queue_run_in_order },
279 { "queue_run_max", opt_int, &queue_run_max },
280 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
281 { "receive_timeout", opt_time, &receive_timeout },
282 { "received_header_text", opt_stringptr, &received_header_text },
283 { "received_headers_max", opt_int, &received_headers_max },
284 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
285 { "recipients_max", opt_int, &recipients_max },
286 { "recipients_max_reject", opt_bool, &recipients_max_reject },
287 { "remote_max_parallel", opt_int, &remote_max_parallel },
288 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
289 { "retry_data_expire", opt_time, &retry_data_expire },
290 { "retry_interval_max", opt_time, &retry_interval_max },
291 { "return_path_remove", opt_bool, &return_path_remove },
292 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
293 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
294 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
295 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
296 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
297 { "smtp_accept_max", opt_int, &smtp_accept_max },
298 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
299 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
300 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
301 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
302 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
303 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
304 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
305 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
306 { "smtp_banner", opt_stringptr, &smtp_banner },
307 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
308 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
309 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
310 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
311 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
312 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
313 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
314 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
315 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
316 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
317 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
318 { "smtp_receive_timeout", opt_time, &smtp_receive_timeout },
319 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
320 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
321 { "split_spool_directory", opt_bool, &split_spool_directory },
322 { "spool_directory", opt_stringptr, &spool_directory },
323 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
324 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
325 { "syslog_duplication", opt_bool, &syslog_duplication },
326 { "syslog_facility", opt_stringptr, &syslog_facility_str },
327 { "syslog_processname", opt_stringptr, &syslog_processname },
328 { "syslog_timestamp", opt_bool, &syslog_timestamp },
329 { "system_filter", opt_stringptr, &system_filter },
330 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
331 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
332 { "system_filter_group", opt_gid, &system_filter_gid },
333 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
334 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
335 { "system_filter_user", opt_uid, &system_filter_uid },
336 { "tcp_nodelay", opt_bool, &tcp_nodelay },
337 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
338 { "timezone", opt_stringptr, &timezone_string },
340 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
341 { "tls_certificate", opt_stringptr, &tls_certificate },
342 { "tls_crl", opt_stringptr, &tls_crl },
343 { "tls_dhparam", opt_stringptr, &tls_dhparam },
344 { "tls_on_connect_ports", opt_stringptr, &tls_on_connect_ports },
345 { "tls_privatekey", opt_stringptr, &tls_privatekey },
346 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
347 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
348 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
349 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
350 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
352 { "trusted_groups", opt_gidlist, &trusted_groups },
353 { "trusted_users", opt_uidlist, &trusted_users },
354 { "unknown_login", opt_stringptr, &unknown_login },
355 { "unknown_username", opt_stringptr, &unknown_username },
356 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
357 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
358 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
359 { "warn_message_file", opt_stringptr, &warn_message_file },
360 { "write_rejectlog", opt_bool, &write_rejectlog }
363 static int optionlist_config_size =
364 sizeof(optionlist_config)/sizeof(optionlist);
368 /*************************************************
369 * Find the name of an option *
370 *************************************************/
372 /* This function is to aid debugging. Various functions take arguments that are
373 pointer variables in the options table or in option tables for various drivers.
374 For debugging output, it is useful to be able to find the name of the option
375 which is currently being processed. This function finds it, if it exists, by
376 searching the table(s).
378 Arguments: a value that is presumed to be in the table above
379 Returns: the option name, or an empty string
383 readconf_find_option(void *p)
387 transport_instance *t;
389 for (i = 0; i < optionlist_config_size; i++)
390 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
392 for (r = routers; r != NULL; r = r->next)
394 router_info *ri = r->info;
395 for (i = 0; i < ri->options_count[0]; i++)
397 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
398 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
399 return US ri->options[i].name;
403 for (t = transports; t != NULL; t = t->next)
405 transport_info *ti = t->info;
406 for (i = 0; i < ti->options_count[0]; i++)
408 if ((ti->options[i].type & opt_mask) != opt_stringptr) continue;
409 if (p == (char *)(t->options_block) + (long int)(ti->options[i].value))
410 return US ti->options[i].name;
421 /*************************************************
422 * Read configuration line *
423 *************************************************/
425 /* A logical line of text is read from the configuration file into the big
426 buffer, taking account of macros, .includes, and continuations. The size of
427 big_buffer is increased if necessary. The count of configuration lines is
428 maintained. Physical input lines starting with # (ignoring leading white space,
429 and after macro replacement) and empty logical lines are always ignored.
430 Leading and trailing spaces are removed.
432 If we hit a line of the form "begin xxxx", the xxxx is placed in the
433 next_section vector, and the function returns NULL, indicating the end of a
434 configuration section. On end-of-file, NULL is returned with next_section
439 Returns: a pointer to the first non-blank in the line,
440 or NULL if eof or end of section is reached
444 get_config_line(void)
446 int startoffset = 0; /* To first non-blank char in logical line */
447 int len = 0; /* Of logical line so far */
453 /* Loop for handling continuation lines, skipping comments, and dealing with
458 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
460 if (config_file_stack != NULL) /* EOF inside .include */
463 config_file = config_file_stack->file;
464 config_filename = config_file_stack->filename;
465 config_lineno = config_file_stack->lineno;
466 config_file_stack = config_file_stack->next;
470 /* EOF at top level */
472 if (cstate_stack_ptr >= 0)
473 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
474 "Unexpected end of configuration file: .endif missing");
476 if (len != 0) break; /* EOF after continuation */
477 next_section[0] = 0; /* EOF at start of logical line */
482 newlen = len + Ustrlen(big_buffer + len);
484 /* Handle pathologically long physical lines - yes, it did happen - by
485 extending big_buffer at this point. The code also copes with very long
488 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
491 big_buffer_size += BIG_BUFFER_SIZE;
492 newbuffer = store_malloc(big_buffer_size);
494 /* This use of strcpy is OK because we know that the string in the old
495 buffer is shorter than the new buffer. */
497 Ustrcpy(newbuffer, big_buffer);
498 store_free(big_buffer);
499 big_buffer = newbuffer;
500 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
502 newlen += Ustrlen(big_buffer + newlen);
505 /* Find the true start of the physical line - leading spaces are always
508 ss = big_buffer + len;
509 while (isspace(*ss)) ss++;
511 /* Process the physical line for macros. If this is the start of the logical
512 line, skip over initial text at the start of the line if it starts with an
513 upper case character followed by a sequence of name characters and an equals
514 sign, because that is the definition of a new macro, and we don't do
515 replacement therein. */
518 if (len == 0 && isupper(*s))
520 while (isalnum(*s) || *s == '_') s++;
521 while (isspace(*s)) s++;
522 if (*s != '=') s = ss; /* Not a macro definition */
525 /* For each defined macro, scan the line (from after XXX= if present),
526 replacing all occurrences of the macro. */
529 for (m = macros; m != NULL; m = m->next)
534 while ((p = Ustrstr(t, m->name)) != NULL)
537 int namelen = Ustrlen(m->name);
538 int replen = Ustrlen(m->replacement);
540 /* Expand the buffer if necessary */
542 while (newlen - namelen + replen + 1 > big_buffer_size)
544 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
545 uschar *newbuffer = store_malloc(newsize);
546 memcpy(newbuffer, big_buffer, newlen + 1);
547 p = newbuffer + (p - big_buffer);
548 s = newbuffer + (s - big_buffer);
549 ss = newbuffer + (ss - big_buffer);
550 t = newbuffer + (t - big_buffer);
551 big_buffer_size = newsize;
552 store_free(big_buffer);
553 big_buffer = newbuffer;
556 /* Shuffle the remaining characters up or down in the buffer before
557 copying in the replacement text. Don't rescan the replacement for this
561 moveby = replen - namelen;
564 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
567 Ustrncpy(p, m->replacement, replen);
573 /* An empty macro replacement at the start of a line could mean that ss no
574 longer points to the first non-blank character. */
576 while (isspace(*ss)) ss++;
578 /* Check for comment lines - these are physical lines. */
580 if (*ss == '#') continue;
582 /* Handle conditionals, which are also applied to physical lines. Conditions
583 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
584 expansion occured on the rest of the line. A preliminary test for the leading
585 '.' saves effort on most lines. */
591 /* Search the list of conditional directives */
593 for (i = 0; i < cond_list_size; i++)
596 cond_item *c = cond_list+i;
597 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
599 /* The following character must be white space or end of string */
601 n = ss[1 + c->namelen];
602 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
604 /* .ifdef and .ifndef push the current state onto the stack, then set
605 a new one from the table. Stack overflow is an error */
609 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
610 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
611 ".%s nested too deeply", c->name);
612 cstate_stack[++cstate_stack_ptr] = cstate;
613 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
616 /* For any of the others, stack underflow is an error. The next state
617 comes either from the stack (.endif) or from the table. */
621 if (cstate_stack_ptr < 0)
622 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
623 ".%s without matching .ifdef", c->name);
624 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
625 next_cstate[cstate][macro_found? c->action1 : c->action2];
628 /* Having dealt with a directive, break the loop */
633 /* If we have handled a conditional directive, continue with the next
634 physical line. Otherwise, fall through. */
636 if (i < cond_list_size) continue;
639 /* If the conditional state is not 0 (actively using these lines), ignore
642 if (cstate != 0) continue; /* Conditional skip */
644 /* Handle .include lines - these are also physical lines. */
646 if (Ustrncmp(ss, ".include", 8) == 0 &&
648 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
651 int include_if_exists = isspace(ss[8])? 0 : 10;
652 config_file_item *save;
655 ss += 9 + include_if_exists;
656 while (isspace(*ss)) ss++;
657 t = ss + Ustrlen(ss);
658 while (t > ss && isspace(t[-1])) t--;
659 if (*ss == '\"' && t[-1] == '\"')
666 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
668 save = store_get(sizeof(config_file_item));
669 save->next = config_file_stack;
670 config_file_stack = save;
671 save->file = config_file;
672 save->filename = config_filename;
673 save->lineno = config_lineno;
675 config_file = Ufopen(ss, "rb");
676 if (config_file == NULL)
677 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
678 "configuration file %s", ss);
679 config_filename = string_copy(ss);
684 /* If this is the start of the logical line, remember where the non-blank
685 data starts. Otherwise shuffle down continuation lines to remove leading
689 startoffset = ss - big_buffer;
692 s = big_buffer + len;
695 memmove(s, ss, (newlen - len) - (ss - s) + 1);
700 /* Accept the new addition to the line. Remove trailing white space. */
703 while (len > 0 && isspace(big_buffer[len-1])) len--;
706 /* We are done if the line does not end in backslash and contains some data.
707 Empty logical lines are ignored. For continuations, remove the backslash and
708 go round the loop to read the continuation line. */
712 if (big_buffer[len-1] != '\\') break; /* End of logical line */
713 big_buffer[--len] = 0; /* Remove backslash */
715 } /* Loop for reading multiple physical lines */
717 /* We now have a logical line. Test for the end of a configuration section (or,
718 more accurately, for the start of the next section). Place the name of the next
719 section in next_section, and return NULL. If the name given is longer than
720 next_section, truncate it. It will be unrecognized later, because all the known
721 section names do fit. Leave space for pluralizing. */
723 s = big_buffer + startoffset; /* First non-space character */
724 if (strncmpic(s, US"begin ", 6) == 0)
727 while (isspace(*s)) s++;
728 if (big_buffer + len - s > sizeof(next_section) - 2)
729 s[sizeof(next_section) - 2] = 0;
730 Ustrcpy(next_section, s);
734 /* Return the first non-blank character. */
741 /*************************************************
743 *************************************************/
745 /* The yield is the pointer to the next uschar. Names longer than the
746 output space are silently truncated. This function is also used from acl.c when
750 name where to put the name
754 Returns: new input pointer
758 readconf_readname(uschar *name, int len, uschar *s)
761 while (isspace(*s)) s++;
764 while (isalnum(*s) || *s == '_')
766 if (p < len-1) name[p++] = *s;
771 while (isspace(*s)) s++;
778 /*************************************************
779 * Read a time value *
780 *************************************************/
782 /* This function is also called from outside, to read argument
783 time values. The format of a time value is:
785 [<n>w][<n>d][<n>h][<n>m][<n>s]
787 as long as at least one is present. If a format error is encountered,
788 return a negative value. The value must be terminated by the given
793 terminator required terminating character
794 return_msec if TRUE, allow fractional seconds and return milliseconds
796 Returns: the time value, or -1 on syntax error
797 value is seconds if return_msec is FALSE
798 value is milliseconds if return_msec is TRUE
802 readconf_readtime(uschar *s, int terminator, BOOL return_msec)
810 if (!isdigit(*s)) return -1;
811 (void)sscanf(CS s, "%d%n", &value, &count);
816 case 'w': value *= 7;
817 case 'd': value *= 24;
818 case 'h': value *= 60;
819 case 'm': value *= 60;
824 if (!return_msec) return -1;
825 (void)sscanf(CS s, "%lf%n", &fraction, &count);
827 if (*s++ != 's') return -1;
828 yield += (int)(fraction * 1000.0);
834 if (return_msec) value *= 1000;
836 if (*s == terminator) return yield;
838 /* Control never reaches here. */
843 /*************************************************
844 * Read a fixed point value *
845 *************************************************/
847 /* The value is returned *1000
851 terminator required terminator
853 Returns: the value, or -1 on error
857 readconf_readfixed(uschar *s, int terminator)
861 if (!isdigit(*s)) return -1;
862 (void)sscanf(CS s, "%d%n", &value, &count);
864 yield = value * 1000;
868 while (isdigit((*(++s))))
870 yield += (*s - '0') * m;
875 return (*s == terminator)? yield : (-1);
880 /*************************************************
881 * Find option in list *
882 *************************************************/
884 /* The lists are always in order, so binary chop can be used.
887 name the option name to search for
888 ol the first entry in the option list
889 last one more than the offset of the last entry in the option list
891 Returns: pointer to an option entry, or NULL if not found
895 find_option(uschar *name, optionlist *ol, int last)
900 int middle = (first + last)/2;
901 int c = Ustrcmp(name, ol[middle].name);
902 if (c == 0) return ol + middle;
903 else if (c > 0) first = middle + 1;
911 /*************************************************
912 * Find a set flag in option list *
913 *************************************************/
915 /* Because some versions of Unix make no restrictions on the values of uids and
916 gids (even negative ones), we cannot represent "unset" by a special value.
917 There is therefore a separate boolean variable for each one indicating whether
918 a value is set or not. This function returns a pointer to the boolean, given
919 the original option name. It is a major disaster if the flag cannot be found.
922 name the name of the uid or gid option
923 oltop points to the start of the relevant option list
924 last one more than the offset of the last item in the option list
925 data_block NULL when reading main options => data values in the option
926 list are absolute addresses; otherwise they are byte offsets
927 in data_block (used for driver options)
929 Returns: a pointer to the boolean flag.
933 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
937 sprintf(CS name2, "*set_%.50s", name);
938 ol = find_option(name2, oltop, last);
939 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
940 "Exim internal error: missing set flag for %s", name);
941 return (data_block == NULL)? (BOOL *)(ol->value) :
942 (BOOL *)((uschar *)data_block + (long int)(ol->value));
948 /*************************************************
949 * Output extra characters message and die *
950 *************************************************/
952 /* Called when an option line has junk on the end. Sometimes this is because
953 the sysadmin thinks comments are permitted.
956 s points to the extra characters
957 t1..t3 strings to insert in the log message
959 Returns: doesn't return; dies
963 extra_chars_error(uschar *s, uschar *t1, uschar *t2, uschar *t3)
965 uschar *comment = US"";
966 if (*s == '#') comment = US" (# is comment only at line start)";
967 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
968 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
973 /*************************************************
974 * Read rewrite information *
975 *************************************************/
977 /* Each line of rewrite information contains:
979 . A complete address in the form user@domain, possibly with
980 leading * for each part; or alternatively, a regex.
982 . A replacement string (which will be expanded).
984 . An optional sequence of one-letter flags, indicating which
985 headers etc. to apply this rule to.
987 All this is decoded and placed into a control block. The OR of the flags is
988 maintained in a common word.
991 p points to the string that makes up the rule
992 existflags points to the overall flag word
993 isglobal TRUE if reading global rewrite rules
995 Returns: the control block for the parsed rule.
998 static rewrite_rule *
999 readconf_one_rewrite(uschar *p, int *existflags, BOOL isglobal)
1001 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1004 next->key = string_dequote(&p);
1006 while (isspace(*p)) p++;
1008 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1009 "missing rewrite replacement string");
1012 next->replacement = string_dequote(&p);
1014 while (*p != 0) switch (*p++)
1016 case ' ': case '\t': break;
1018 case 'q': next->flags |= rewrite_quit; break;
1019 case 'w': next->flags |= rewrite_whole; break;
1021 case 'h': next->flags |= rewrite_all_headers; break;
1022 case 's': next->flags |= rewrite_sender; break;
1023 case 'f': next->flags |= rewrite_from; break;
1024 case 't': next->flags |= rewrite_to; break;
1025 case 'c': next->flags |= rewrite_cc; break;
1026 case 'b': next->flags |= rewrite_bcc; break;
1027 case 'r': next->flags |= rewrite_replyto; break;
1029 case 'E': next->flags |= rewrite_all_envelope; break;
1030 case 'F': next->flags |= rewrite_envfrom; break;
1031 case 'T': next->flags |= rewrite_envto; break;
1033 case 'Q': next->flags |= rewrite_qualify; break;
1034 case 'R': next->flags |= rewrite_repeat; break;
1037 next->flags |= rewrite_smtp;
1038 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1039 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1040 "rewrite rule has the S flag but is not a regular expression");
1044 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1045 "unknown rewrite flag character '%c' "
1046 "(could be missing quotes round replacement item)", p[-1]);
1050 /* If no action flags are set, set all the "normal" rewrites. */
1052 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1053 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1055 /* Remember which exist, for optimization, and return the rule */
1057 *existflags |= next->flags;
1064 /*************************************************
1065 * Read global rewrite information *
1066 *************************************************/
1068 /* Each line is a single rewrite rule; it is parsed into a control block
1069 by readconf_one_rewrite(), and its flags are ORed into the global flag
1070 word rewrite_existflags. */
1073 readconf_rewrites(void)
1075 rewrite_rule **chain = &global_rewrite_rules;
1078 while ((p = get_config_line()) != NULL)
1080 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1082 chain = &(next->next);
1088 /*************************************************
1090 *************************************************/
1092 /* Strings are read into the normal store pool. As long we aren't too
1093 near the end of the current block, the string will just use what is necessary
1094 on the top of the stacking pool, because string_cat() uses the extension
1098 s the rest of the input line
1099 name the option name (for errors)
1101 Returns: pointer to the string
1105 read_string(uschar *s, uschar *name)
1110 if (*s != '\"') return string_copy(s);
1113 yield = string_dequote(&s);
1115 if (s == ss+1 || s[-1] != '\"')
1116 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1117 "missing quote at end of string value for %s", name);
1119 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1125 /*************************************************
1126 * Handle option line *
1127 *************************************************/
1129 /* This function is called from several places to process a line containing the
1130 setting of an option. The first argument is the line to be decoded; it has been
1131 checked not to be empty and not to start with '#'. Trailing newlines and white
1132 space have been removed. The second argument is a pointer to the list of
1133 variable names that are to be recognized, together with their types and
1134 locations, and the third argument gives the number of entries in the list.
1136 The fourth argument is a pointer to a data block. If it is NULL, then the data
1137 values in the options list are absolute addresses. Otherwise, they are byte
1138 offsets in the data block.
1140 String option data may continue onto several lines; this function reads further
1141 data from config_file if necessary.
1143 The yield of this function is normally zero. If a string continues onto
1144 multiple lines, then the data value is permitted to be followed by a comma
1145 or a semicolon (for use in drivers) and the yield is that character.
1148 buffer contains the configuration line to be handled
1149 oltop points to the start of the relevant option list
1150 last one more than the offset of the last item in the option list
1151 data_block NULL when reading main options => data values in the option
1152 list are absolute addresses; otherwise they are byte offsets
1153 in data_block when they have opt_public set; otherwise
1154 they are byte offsets in data_block->options_block.
1155 unknown_txt format string to use in panic message for unknown option;
1156 must contain %s for option name
1157 if given as NULL, don't panic on unknown option
1159 Returns: TRUE if an option was read successfully,
1160 FALSE false for an unknown option if unknown_txt == NULL,
1161 otherwise panic and die on an unknown option
1165 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1166 void *data_block, uschar *unknown_txt)
1170 int n, count, type, value;
1174 BOOL boolvalue = TRUE;
1175 BOOL freesptr = TRUE;
1176 optionlist *ol, *ol2;
1180 uschar *inttype = US"";
1186 /* There may be leading spaces; thereafter, we expect an option name starting
1189 while (isspace(*s)) s++;
1191 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1193 /* Read the name of the option, and skip any subsequent white space. If
1194 it turns out that what we read was "hide", set the flag indicating that
1195 this is a secure option, and loop to read the next word. */
1197 for (n = 0; n < 2; n++)
1199 while (isalnum(*s) || *s == '_')
1201 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1205 while (isspace(*s)) s++;
1206 if (Ustrcmp(name, "hide") != 0) break;
1207 issecure = opt_secure;
1211 /* Deal with "no_" or "not_" here for booleans */
1213 if (Ustrncmp(name, "no_", 3) == 0)
1219 if (Ustrncmp(name, "not_", 4) == 0)
1225 /* Search the list for the given name. A non-existent name, or an option that
1226 is set twice, is a disaster. */
1228 ol = find_option(name + offset, oltop, last);
1232 if (unknown_txt == NULL) return FALSE;
1233 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1236 if ((ol->type & opt_set) != 0)
1238 uschar *mname = name;
1239 if (Ustrncmp(mname, "no_", 3) == 0) mname += 3;
1240 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1241 "\"%s\" option set for the second time", mname);
1244 ol->type |= opt_set | issecure;
1245 type = ol->type & opt_mask;
1247 /* Types with data values must be followed by '='; the "no[t]_" prefix
1248 applies only to boolean values. */
1250 if (type < opt_bool || type > opt_bool_last)
1253 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1254 "negation prefix applied to a non-boolean option");
1256 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1257 "unexpected end of line (data missing) after %s", name);
1259 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1262 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1263 true/false/yes/no, or, in the case of opt_expanded_bool, a general string that
1264 ultimately expands to one of those values. */
1266 else if (*s != 0 && (offset != 0 || *s != '='))
1267 extra_chars_error(s, US"boolean option ", name, US"");
1269 /* Skip white space after = */
1271 if (*s == '=') while (isspace((*(++s))));
1273 /* If there is a data block and the opt_public flag is not set, change
1274 the data block pointer to the private options block. */
1276 if (data_block != NULL && (ol->type & opt_public) == 0)
1277 data_block = (void *)(((driver_instance *)data_block)->options_block);
1279 /* Now get the data according to the type. */
1283 /* If a string value is not enclosed in quotes, it consists of
1284 the rest of the current line, verbatim. Otherwise, string escapes
1287 A transport is specified as a string, which is then looked up in the
1288 list of transports. A search type is specified as one of a number of
1291 A set or rewrite rules for a driver is specified as a string, which is
1292 then parsed into a suitable chain of control blocks.
1294 Uids and gids are specified as strings which are then looked up in the
1295 passwd file. Lists of uids and gids are similarly specified as colon-
1296 separated strings. */
1301 case opt_expand_uid:
1302 case opt_expand_gid:
1307 reset_point = sptr = read_string(s, name);
1309 /* Having read a string, we now have several different ways of using it,
1310 depending on the data type, so do another switch. If keeping the actual
1311 string is not required (because it is interpreted), freesptr is set TRUE,
1312 and at the end we reset the pool. */
1316 /* If this was a string, set the variable to point to the new string,
1317 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1318 rules, we still keep the string (for printing), and parse the rules into a
1319 control block and flags word. */
1323 if (data_block == NULL)
1324 *((uschar **)(ol->value)) = sptr;
1326 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1328 if (type == opt_rewrite)
1333 rewrite_rule **chain;
1336 sprintf(CS name2, "*%.50s_rules", name);
1337 ol2 = find_option(name2, oltop, last);
1338 sprintf(CS name2, "*%.50s_flags", name);
1339 ol3 = find_option(name2, oltop, last);
1341 if (ol2 == NULL || ol3 == NULL)
1342 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1343 "rewrite rules not available for driver");
1345 if (data_block == NULL)
1347 chain = (rewrite_rule **)(ol2->value);
1348 flagptr = (int *)(ol3->value);
1352 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1353 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1356 while ((p = string_nextinlist(&sptr, &sep, big_buffer, BIG_BUFFER_SIZE))
1359 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1361 chain = &(next->next);
1364 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1365 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1366 "non-header rewrite - not allowed at transport time -");
1370 /* If it was an expanded uid, see if there is any expansion to be
1371 done by checking for the presence of a $ character. If there is, save it
1372 in the corresponding *expand_user option field. Otherwise, fall through
1373 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1376 case opt_expand_uid:
1377 sprintf(CS name2, "*expand_%.50s", name);
1378 ol2 = find_option(name2, oltop, last);
1381 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1383 if (data_block == NULL)
1384 *((uschar **)(ol2->value)) = ss;
1386 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1390 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1396 /* Look up a fixed uid, and also make use of the corresponding gid
1397 if a passwd entry is returned and the gid has not been set. */
1400 if (!route_finduser(sptr, &pw, &uid))
1401 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1402 if (data_block == NULL)
1403 *((uid_t *)(ol->value)) = uid;
1405 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1407 /* Set the flag indicating a fixed value is set */
1409 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1411 /* Handle matching gid if we have a passwd entry: done by finding the
1412 same name with terminating "user" changed to "group"; if not found,
1413 ignore. Also ignore if the value is already set. */
1415 if (pw == NULL) break;
1416 Ustrcpy(name+Ustrlen(name)-4, "group");
1417 ol2 = find_option(name, oltop, last);
1418 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1419 (ol2->type & opt_mask) == opt_expand_gid))
1421 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1424 if (data_block == NULL)
1425 *((gid_t *)(ol2->value)) = pw->pw_gid;
1427 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1433 /* If it was an expanded gid, see if there is any expansion to be
1434 done by checking for the presence of a $ character. If there is, save it
1435 in the corresponding *expand_user option field. Otherwise, fall through
1436 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1439 case opt_expand_gid:
1440 sprintf(CS name2, "*expand_%.50s", name);
1441 ol2 = find_option(name2, oltop, last);
1444 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1446 if (data_block == NULL)
1447 *((uschar **)(ol2->value)) = ss;
1449 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1453 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1459 /* Handle freestanding gid */
1462 if (!route_findgroup(sptr, &gid))
1463 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1464 if (data_block == NULL)
1465 *((gid_t *)(ol->value)) = gid;
1467 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1468 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1471 /* If it was a uid list, look up each individual entry, and build
1472 a vector of uids, with a count in the first element. Put the vector
1473 in malloc store so we can free the string. (We are reading into
1474 permanent store already.) */
1483 if (*p != 0) count++;
1484 while (*p != 0) if (*p++ == ':') count++;
1485 list = store_malloc(count*sizeof(uid_t));
1486 list[ptr++] = (uid_t)(count - 1);
1488 if (data_block == NULL)
1489 *((uid_t **)(ol->value)) = list;
1491 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1497 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1498 if (!route_finduser(big_buffer, NULL, &uid))
1499 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1506 /* If it was a gid list, look up each individual entry, and build
1507 a vector of gids, with a count in the first element. Put the vector
1508 in malloc store so we can free the string. (We are reading into permanent
1518 if (*p != 0) count++;
1519 while (*p != 0) if (*p++ == ':') count++;
1520 list = store_malloc(count*sizeof(gid_t));
1521 list[ptr++] = (gid_t)(count - 1);
1523 if (data_block == NULL)
1524 *((gid_t **)(ol->value)) = list;
1526 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1532 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1533 if (!route_findgroup(big_buffer, &gid))
1534 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1542 /* Release store if the value of the string doesn't need to be kept. */
1544 if (freesptr) store_reset(reset_point);
1547 /* Expanded boolean: if no characters follow, or if there are no dollar
1548 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1549 save the string for later expansion in the alternate place. */
1551 case opt_expand_bool:
1552 if (*s != 0 && Ustrchr(s, '$') != 0)
1554 sprintf(CS name2, "*expand_%.50s", name);
1555 ol2 = find_option(name2, oltop, last);
1558 reset_point = sptr = read_string(s, name);
1559 if (data_block == NULL)
1560 *((uschar **)(ol2->value)) = sptr;
1562 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1569 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1570 look for yes/not/true/false. Some booleans are stored in a single bit in
1571 a single int. There's a special fudge for verify settings; without a suffix
1572 they set both xx_sender and xx_recipient. The table points to the sender
1573 value; search subsequently for the recipient. There's another special case:
1574 opt_bool_set also notes when a boolean has been set. */
1578 case opt_bool_verify:
1582 s = readconf_readname(name2, 64, s);
1583 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1585 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1587 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1588 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1589 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1590 US"for boolean option ", name);
1593 /* Handle single-bit type. */
1595 if (type == opt_bit)
1597 int bit = 1 << ((ol->type >> 16) & 31);
1598 int *ptr = (data_block == NULL)?
1599 (int *)(ol->value) :
1600 (int *)((uschar *)data_block + (long int)ol->value);
1601 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1605 /* Handle full BOOL types */
1607 if (data_block == NULL)
1608 *((BOOL *)(ol->value)) = boolvalue;
1610 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1614 if (type == opt_bool_verify)
1616 sprintf(CS name2, "%.50s_recipient", name + offset);
1617 ol2 = find_option(name2, oltop, last);
1620 if (data_block == NULL)
1621 *((BOOL *)(ol2->value)) = boolvalue;
1623 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1627 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1629 else if (type == opt_bool_set)
1631 sprintf(CS name2, "*set_%.50s", name + offset);
1632 ol2 = find_option(name2, oltop, last);
1635 if (data_block == NULL)
1636 *((BOOL *)(ol2->value)) = TRUE;
1638 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1647 inttype = US"octal ";
1649 /* Integer: a simple(ish) case; allow octal and hex formats, and
1650 suffixes K and M. The different types affect output, not input. */
1657 value = strtol(CS s, CSS &endptr, intbase);
1660 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1663 if (errno != ERANGE)
1665 if (tolower(*endptr) == 'k')
1667 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
1671 else if (tolower(*endptr) == 'm')
1673 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
1675 else value *= 1024*1024;
1680 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1681 "absolute value of integer \"%s\" is too large (overflow)", s);
1683 while (isspace(*endptr)) endptr++;
1685 extra_chars_error(endptr, inttype, US"integer value for ", name);
1688 if (data_block == NULL)
1689 *((int *)(ol->value)) = value;
1691 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1694 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
1701 value = strtol(CS s, CSS &endptr, intbase);
1704 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1707 if (errno != ERANGE)
1709 if (tolower(*endptr) == 'm')
1711 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
1715 else if (tolower(*endptr) == 'k')
1721 value = (value + 512)/1024;
1725 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1726 "absolute value of integer \"%s\" is too large (overflow)", s);
1728 while (isspace(*endptr)) endptr++;
1730 extra_chars_error(endptr, inttype, US"integer value for ", name);
1733 if (data_block == NULL)
1734 *((int *)(ol->value)) = value;
1736 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1739 /* Fixed-point number: held to 3 decimal places. */
1742 if (sscanf(CS s, "%d%n", &value, &count) != 1)
1743 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1744 "fixed-point number expected for %s", name);
1746 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1747 "integer \"%s\" is too large (overflow)", s);
1751 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1752 "integer \"%s\" is too large (overflow)", s);
1754 if (s[count] == '.')
1757 while (isdigit(s[++count]))
1759 value += (s[count] - '0') * d;
1764 while (isspace(s[count])) count++;
1767 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
1769 if (data_block == NULL)
1770 *((int *)(ol->value)) = value;
1772 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1775 /* There's a special routine to read time values. */
1778 value = readconf_readtime(s, 0, FALSE);
1780 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1782 if (data_block == NULL)
1783 *((int *)(ol->value)) = value;
1785 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1788 /* A time list is a list of colon-separated times, with the first
1789 element holding the size of the list and the second the number of
1795 int *list = (data_block == NULL)?
1796 (int *)(ol->value) :
1797 (int *)((uschar *)data_block + (long int)(ol->value));
1799 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
1802 uschar *snext = Ustrchr(s, ':');
1806 while (ss > s && isspace(ss[-1])) ss--;
1809 value = readconf_readtime(s, terminator, FALSE);
1811 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1813 if (count > 1 && value <= list[count])
1814 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1815 "time value out of order for %s", name);
1816 list[count+1] = value;
1817 if (snext == NULL) break;
1819 while (isspace(*s)) s++;
1822 if (count > list[0] - 2)
1823 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
1825 if (count > 0 && list[2] == 0) count = 0;
1837 /*************************************************
1838 * Print a time value *
1839 *************************************************/
1842 Argument: a time value in seconds
1843 Returns: pointer to a fixed buffer containing the time as a string,
1844 in readconf_readtime() format
1848 readconf_printtime(int t)
1851 uschar *p = time_buffer;
1862 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
1863 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
1864 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
1865 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
1866 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
1873 /*************************************************
1874 * Print an individual option value *
1875 *************************************************/
1877 /* This is used by the -bP option, so prints to the standard output.
1878 The entire options list is passed in as an argument, because some options come
1879 in pairs - typically uid/gid settings, which can either be explicit numerical
1880 values, or strings to be expanded later. If the numerical value is unset,
1881 search for "*expand_<name>" to see if there is a string equivalent.
1884 ol option entry, or NULL for an unknown option
1886 options_block NULL for main configuration options; otherwise points to
1887 a driver block; if the option doesn't have opt_public
1888 set, then options_block->options_block is where the item
1890 oltop points to the option list in which ol exists
1891 last one more than the offset of the last entry in optop
1897 print_ol(optionlist *ol, uschar *name, void *options_block,
1898 optionlist *oltop, int last)
1911 printf("%s is not a known option\n", name);
1915 /* Non-admin callers cannot see options that have been flagged secure by the
1918 if (!admin_user && (ol->type & opt_secure) != 0)
1920 printf("%s = <value not displayable>\n", name);
1924 /* Else show the value of the option */
1927 if (options_block != NULL)
1929 if ((ol->type & opt_public) == 0)
1930 options_block = (void *)(((driver_instance *)options_block)->options_block);
1931 value = (void *)((uschar *)options_block + (long int)value);
1934 switch(ol->type & opt_mask)
1937 case opt_rewrite: /* Show the text value */
1938 s = *((uschar **)value);
1939 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing2(s, FALSE));
1943 printf("%s = %d\n", name, *((int *)value));
1948 int x = *((int *)value);
1949 if (x != 0 && (x & 1023) == 0)
1953 if ((x & 1023) == 0)
1958 printf("%s = %d%c\n", name, x, c);
1960 else printf("%s = %d\n", name, x);
1966 int x = *((int *)value);
1967 if (x == 0) printf("%s = 0\n", name);
1968 else if ((x & 1023) == 0) printf("%s = %dM\n", name, x >> 10);
1969 else printf("%s = %dK\n", name, x);
1974 printf("%s = %#o\n", name, *((int *)value));
1977 /* Can be negative only when "unset", in which case integer */
1981 int x = *((int *)value);
1984 if (x < 0) printf("%s =\n", name); else
1986 printf("%s = %d.", name, x/1000);
1999 /* If the numerical value is unset, try for the string value */
2001 case opt_expand_uid:
2002 if (! *get_set_flag(name, oltop, last, options_block))
2004 sprintf(CS name2, "*expand_%.50s", name);
2005 ol2 = find_option(name2, oltop, last);
2008 void *value2 = ol2->value;
2009 if (options_block != NULL)
2010 value2 = (void *)((uschar *)options_block + (long int)value2);
2011 s = *((uschar **)value2);
2012 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s));
2017 /* Else fall through */
2020 if (! *get_set_flag(name, oltop, last, options_block))
2021 printf("%s =\n", name);
2024 pw = getpwuid(*((uid_t *)value));
2026 printf("%s = %ld\n", name, (long int)(*((uid_t *)value)));
2027 else printf("%s = %s\n", name, pw->pw_name);
2031 /* If the numerical value is unset, try for the string value */
2033 case opt_expand_gid:
2034 if (! *get_set_flag(name, oltop, last, options_block))
2036 sprintf(CS name2, "*expand_%.50s", name);
2037 ol2 = find_option(name2, oltop, last);
2038 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2040 void *value2 = ol2->value;
2041 if (options_block != NULL)
2042 value2 = (void *)((uschar *)options_block + (long int)value2);
2043 s = *((uschar **)value2);
2044 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s));
2049 /* Else fall through */
2052 if (! *get_set_flag(name, oltop, last, options_block))
2053 printf("%s =\n", name);
2056 gr = getgrgid(*((int *)value));
2058 printf("%s = %ld\n", name, (long int)(*((int *)value)));
2059 else printf("%s = %s\n", name, gr->gr_name);
2064 uidlist = *((uid_t **)value);
2065 printf("%s =", name);
2066 if (uidlist != NULL)
2070 for (i = 1; i <= (int)(uidlist[0]); i++)
2072 uschar *name = NULL;
2073 pw = getpwuid(uidlist[i]);
2074 if (pw != NULL) name = US pw->pw_name;
2075 if (name != NULL) printf("%c%s", sep, name);
2076 else printf("%c%ld", sep, (long int)(uidlist[i]));
2084 gidlist = *((gid_t **)value);
2085 printf("%s =", name);
2086 if (gidlist != NULL)
2090 for (i = 1; i <= (int)(gidlist[0]); i++)
2092 uschar *name = NULL;
2093 gr = getgrgid(gidlist[i]);
2094 if (gr != NULL) name = US gr->gr_name;
2095 if (name != NULL) printf("%c%s", sep, name);
2096 else printf("%c%ld", sep, (long int)(gidlist[i]));
2104 printf("%s = %s\n", name, readconf_printtime(*((int *)value)));
2110 int *list = (int *)value;
2111 printf("%s = ", name);
2112 for (i = 0; i < list[1]; i++)
2113 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2119 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2123 case opt_expand_bool:
2124 sprintf(CS name2, "*expand_%.50s", name);
2125 ol2 = find_option(name2, oltop, last);
2126 if (ol2 != NULL && ol2->value != NULL)
2128 void *value2 = ol2->value;
2129 if (options_block != NULL)
2130 value2 = (void *)((uschar *)options_block + (long int)value2);
2131 s = *((uschar **)value2);
2134 printf("%s = %s\n", name, string_printing(s));
2137 /* s == NULL => string not set; fall through */
2143 case opt_bool_verify:
2145 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2152 /*************************************************
2153 * Print value from main configuration *
2154 *************************************************/
2156 /* This function, called as a result of encountering the -bP option,
2157 causes the value of any main configuration variable to be output if the
2158 second argument is NULL. There are some special values:
2160 all print all main configuration options
2161 configure_file print the name of the configuration file
2162 routers print the routers' configurations
2163 transports print the transports' configuration
2164 authenticators print the authenticators' configuration
2165 router_list print a list of router names
2166 transport_list print a list of transport names
2167 authenticator_list print a list of authentication mechanism names
2168 +name print a named list item
2169 local_scan print the local_scan options
2171 If the second argument is not NULL, it must be one of "router", "transport", or
2172 "authenticator" in which case the first argument identifies the driver whose
2173 options are to be printed.
2176 name option name if type == NULL; else driver name
2177 type NULL or driver type name, as described above
2183 readconf_print(uschar *name, uschar *type)
2185 BOOL names_only = FALSE;
2187 optionlist *ol2 = NULL;
2188 driver_instance *d = NULL;
2198 static uschar *types[] = { US"address", US"domain", US"host",
2200 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2201 &hostlist_anchor, &localpartlist_anchor };
2203 for (i = 0; i < 4; i++)
2205 t = tree_search(*(anchors[i]), name+1);
2209 printf("%slist %s = %s\n", types[i], name+1,
2210 ((namedlist_block *)(t->data.ptr))->string);
2215 printf("no address, domain, host, or local part list called \"%s\" "
2216 "exists\n", name+1);
2221 if (Ustrcmp(name, "configure_file") == 0)
2223 printf("%s\n", CS config_main_filename);
2227 if (Ustrcmp(name, "all") == 0)
2229 for (ol = optionlist_config;
2230 ol < optionlist_config + optionlist_config_size; ol++)
2232 if ((ol->type & opt_hidden) == 0)
2233 print_ol(ol, US ol->name, NULL, optionlist_config, optionlist_config_size);
2238 if (Ustrcmp(name, "local_scan") == 0)
2240 #ifndef LOCAL_SCAN_HAS_OPTIONS
2241 printf("local_scan() options are not supported\n");
2243 for (ol = local_scan_options;
2244 ol < local_scan_options + local_scan_options_count; ol++)
2246 print_ol(ol, US ol->name, NULL, local_scan_options,
2247 local_scan_options_count);
2253 if (Ustrcmp(name, "routers") == 0)
2258 else if (Ustrcmp(name, "transports") == 0)
2260 type = US"transport";
2264 else if (Ustrcmp(name, "authenticators") == 0)
2266 type = US"authenticator";
2270 else if (Ustrcmp(name, "authenticator_list") == 0)
2272 type = US"authenticator";
2277 else if (Ustrcmp(name, "router_list") == 0)
2283 else if (Ustrcmp(name, "transport_list") == 0)
2285 type = US"transport";
2291 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2292 name, NULL, optionlist_config, optionlist_config_size);
2297 /* Handle the options for a router or transport. Skip options that are flagged
2298 as hidden. Some of these are options with names starting with '*', used for
2299 internal alternative representations of other options (which the printing
2300 function will sort out). Others are synonyms kept for backward compatibility.
2303 if (Ustrcmp(type, "router") == 0)
2305 d = (driver_instance *)routers;
2306 ol2 = optionlist_routers;
2307 size = optionlist_routers_size;
2309 else if (Ustrcmp(type, "transport") == 0)
2311 d = (driver_instance *)transports;
2312 ol2 = optionlist_transports;
2313 size = optionlist_transports_size;
2315 else if (Ustrcmp(type, "authenticator") == 0)
2317 d = (driver_instance *)auths;
2318 ol2 = optionlist_auths;
2319 size = optionlist_auths_size;
2324 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2328 /* Either search for a given driver, or print all of them */
2330 for (; d != NULL; d = d->next)
2333 printf("\n%s %s:\n", d->name, type);
2334 else if (Ustrcmp(d->name, name) != 0) continue;
2336 for (ol = ol2; ol < ol2 + size; ol++)
2338 if ((ol->type & opt_hidden) == 0)
2339 print_ol(ol, US ol->name, d, ol2, size);
2342 for (ol = d->info->options;
2343 ol < d->info->options + *(d->info->options_count); ol++)
2345 if ((ol->type & opt_hidden) == 0)
2346 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count));
2348 if (name != NULL) return;
2350 if (name != NULL) printf("%s %s not found\n", type, name);
2355 /*************************************************
2356 * Read a named list item *
2357 *************************************************/
2359 /* This function reads a name and a list (i.e. string). The name is used to
2360 save the list in a tree, sorted by its name. Each entry also has a number,
2361 which can be used for caching tests, but if the string contains any expansion
2362 items other than $key, the number is set negative to inhibit caching. This
2363 mechanism is used for domain, host, and address lists that are referenced by
2367 anchorp points to the tree anchor
2368 numberp points to the current number for this tree
2369 max the maximum number permitted
2370 s the text of the option line, starting immediately after the name
2372 tname the name of the list type, for messages
2378 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2381 BOOL forcecache = FALSE;
2384 namedlist_block *nb = store_get(sizeof(namedlist_block));
2386 if (Ustrncmp(s, "_cache", 6) == 0)
2393 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2395 if (*numberp >= max)
2396 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2399 while (isspace(*s)) s++;
2401 while (isalnum(*s) || *s == '_') s++;
2402 t = store_get(sizeof(tree_node) + s-ss);
2403 Ustrncpy(t->name, ss, s-ss);
2405 while (isspace(*s)) s++;
2407 if (!tree_insertnode(anchorp, t))
2408 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2409 "duplicate name \"%s\" for a named %s", t->name, tname);
2412 nb->number = *numberp;
2415 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2416 "missing '=' after \"%s\"", t->name);
2417 while (isspace(*s)) s++;
2418 nb->string = read_string(s, t->name);
2419 nb->cache_data = NULL;
2421 /* Check the string for any expansions; if any are found, mark this list
2422 uncacheable unless the user has explicited forced caching. */
2424 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2430 /*************************************************
2431 * Unpick data for a rate limit *
2432 *************************************************/
2434 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2438 s string, in the form t,b,f,l
2439 where t is the threshold (integer)
2440 b is the initial delay (time)
2441 f is the multiplicative factor (fixed point)
2442 k is the maximum time (time)
2443 threshold where to store threshold
2444 base where to store base in milliseconds
2445 factor where to store factor in milliseconds
2446 limit where to store limit
2448 Returns: nothing (panics on error)
2452 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2455 uschar bstring[16], lstring[16];
2457 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2458 factor, lstring) == 4)
2460 *base = readconf_readtime(bstring, 0, TRUE);
2461 *limit = readconf_readtime(lstring, 0, TRUE);
2462 if (*base >= 0 && *limit >= 0) return;
2464 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2470 /*************************************************
2471 * Read main configuration options *
2472 *************************************************/
2474 /* This function is the first to be called for configuration reading. It
2475 opens the configuration file and reads general configuration settings until
2476 it reaches the end of the configuration section. The file is then left open so
2477 that the remaining configuration data can subsequently be read if needed for
2480 The configuration file must be owned either by root or exim, and be writeable
2481 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2482 in the config file, so the test is done on the compiled in values. A slight
2483 anomaly, to be carefully documented.
2485 The name of the configuration file is taken from a list that is included in the
2486 binary of Exim. It can be altered from the command line, but if that is done,
2487 root privilege is immediately withdrawn unless the caller is root or exim.
2488 The first file on the list that exists is used.
2490 For use on multiple systems that share file systems, first look for a
2491 configuration file whose name has the current node name on the end. If that is
2492 not found, try the generic name. For really contorted configurations, that run
2493 multiple Exims with different uid settings, first try adding the effective uid
2494 before the node name. These complications are going to waste resources on most
2495 systems. Therefore they are available only when requested by compile-time
2502 struct stat statbuf;
2503 uschar *s, *filename;
2504 uschar *list = config_main_filelist;
2506 /* Loop through the possible file names */
2508 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2511 /* Cut out all the fancy processing unless specifically wanted */
2513 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2514 uschar *suffix = filename + Ustrlen(filename);
2516 /* Try for the node-specific file if a node name exists */
2518 #ifdef CONFIGURE_FILE_USE_NODE
2520 if (uname(&uts) >= 0)
2522 #ifdef CONFIGURE_FILE_USE_EUID
2523 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2524 config_file = Ufopen(filename, "rb");
2525 if (config_file == NULL)
2526 #endif /* CONFIGURE_FILE_USE_EUID */
2528 sprintf(CS suffix, ".%.256s", uts.nodename);
2529 config_file = Ufopen(filename, "rb");
2532 #endif /* CONFIGURE_FILE_USE_NODE */
2534 /* Otherwise, try the generic name, possibly with the euid added */
2536 #ifdef CONFIGURE_FILE_USE_EUID
2537 if (config_file == NULL)
2539 sprintf(CS suffix, ".%ld", (long int)original_euid);
2540 config_file = Ufopen(filename, "rb");
2542 #endif /* CONFIGURE_FILE_USE_EUID */
2544 /* Finally, try the unadorned name */
2546 if (config_file == NULL)
2549 config_file = Ufopen(filename, "rb");
2551 #else /* if neither defined */
2553 /* This is the common case when the fancy processing is not included. */
2555 config_file = Ufopen(filename, "rb");
2558 /* If the file does not exist, continue to try any others. For any other
2559 error, break out (and die). */
2561 if (config_file != NULL || errno != ENOENT) break;
2564 /* On success, save the name for verification; config_filename is used when
2565 logging configuration errors (it changes for .included files) whereas
2566 config_main_filename is the name shown by -bP. Failure to open a configuration
2567 file is a serious disaster. */
2569 if (config_file != NULL)
2571 config_filename = config_main_filename = string_copy(filename);
2575 if (filename == NULL)
2576 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
2577 "%s", config_main_filelist);
2579 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
2580 "configuration file %s", filename));
2583 /* Check the status of the file we have opened, unless it was specified on
2584 the command line, in which case privilege was given away at the start. */
2586 if (!config_changed)
2588 if (fstat(fileno(config_file), &statbuf) != 0)
2589 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
2592 if ((statbuf.st_uid != root_uid && /* owner not root */
2593 statbuf.st_uid != exim_uid /* owner not exim */
2594 #ifdef CONFIGURE_OWNER
2595 && statbuf.st_uid != config_uid /* owner not the special one */
2598 (statbuf.st_gid != exim_gid /* group not exim & */
2599 #ifdef CONFIGURE_GROUP
2600 && statbuf.st_gid != config_gid /* group not the special one */
2602 && (statbuf.st_mode & 020) != 0) || /* group writeable */
2604 ((statbuf.st_mode & 2) != 0)) /* world writeable */
2606 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
2607 "wrong owner, group, or mode", big_buffer);
2610 /* Process the main configuration settings. They all begin with a lower case
2611 letter. If we see something starting with an upper case letter, it is taken as
2612 a macro definition. */
2614 while ((s = get_config_line()) != NULL)
2619 macro_item *mlast = NULL;
2623 while (isalnum(*s) || *s == '_')
2625 if (namelen >= sizeof(name) - 1)
2626 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2627 "macro name too long (maximum is %d characters)", sizeof(name) - 1);
2628 name[namelen++] = *s++;
2631 while (isspace(*s)) s++;
2632 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2633 "malformed macro definition");
2634 while (isspace(*s)) s++;
2636 /* If an existing macro of the same name was defined on the command line,
2637 we just skip this definition. Otherwise it's an error to attempt to
2638 redefine a macro. It is also an error to define a macro whose name begins
2639 with the name of a previously-defined macro. */
2641 for (m = macros; m != NULL; m = m->next)
2643 int len = Ustrlen(m->name);
2645 if (Ustrcmp(m->name, name) == 0)
2647 if (m->command_line) break;
2648 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
2652 if (len < namelen && Ustrstr(name, m->name) != NULL)
2653 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
2654 "a macro because previously defined macro \"%s\" is a substring",
2659 if (m != NULL) continue; /* Found an overriding command-line definition */
2661 m = store_get(sizeof(macro_item) + namelen);
2663 m->command_line = FALSE;
2664 if (mlast == NULL) macros = m; else mlast->next = m;
2666 /* This use of strcpy() is OK because we have obtained a block of store
2667 whose size is based on the length of "name". The definition of the
2668 macro_item structure includes a final vector called "name" which is one
2669 byte long. Thus, adding "namelen" gives us enough room to store the "name"
2672 Ustrcpy(m->name, name);
2673 m->replacement = string_copy(s);
2676 else if (Ustrncmp(s, "domainlist", 10) == 0)
2677 read_named_list(&domainlist_anchor, &domainlist_count,
2678 MAX_NAMED_LIST, s+10, US"domain list");
2680 else if (Ustrncmp(s, "hostlist", 8) == 0)
2681 read_named_list(&hostlist_anchor, &hostlist_count,
2682 MAX_NAMED_LIST, s+8, US"host list");
2684 else if (Ustrncmp(s, US"addresslist", 11) == 0)
2685 read_named_list(&addresslist_anchor, &addresslist_count,
2686 MAX_NAMED_LIST, s+11, US"address list");
2688 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
2689 read_named_list(&localpartlist_anchor, &localpartlist_count,
2690 MAX_NAMED_LIST, s+13, US"local part list");
2693 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
2694 NULL, US"main option \"%s\" unknown");
2698 /* If local_sender_retain is set, local_from_check must be unset. */
2700 if (local_sender_retain && local_from_check)
2701 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
2702 "local_sender_retain are set; this combination is not allowed");
2704 /* If the timezone string is empty, set it to NULL, implying no TZ variable
2707 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
2709 /* remote_max_parallel must be > 0 */
2711 if (remote_max_parallel <= 0) remote_max_parallel = 1;
2713 /* The primary host name may be required for expansion of spool_directory
2714 and log_file_path, so make sure it is set asap. It is obtained from uname(),
2715 but if that yields an unqualified value, make a FQDN by using gethostbyname to
2716 canonize it. Some people like upper case letters in their host names, so we
2717 don't force the case. */
2719 if (primary_hostname == NULL)
2723 if (uname(&uts) < 0)
2724 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
2725 hostname = US uts.nodename;
2727 if (Ustrchr(hostname, '.') == NULL)
2730 struct hostent *hostdata;
2733 if (dns_ipv4_lookup == NULL ||
2734 match_isinlist(hostname, &dns_ipv4_lookup, 0, NULL, NULL, MCL_DOMAIN,
2744 #if HAVE_GETIPNODEBYNAME
2746 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
2748 hostdata = gethostbyname2(CS hostname, af);
2751 hostdata = gethostbyname(CS hostname);
2754 if (hostdata != NULL)
2756 hostname = US hostdata->h_name;
2760 if (af == AF_INET) break;
2765 primary_hostname = string_copy(hostname);
2768 /* Set up default value for smtp_active_hostname */
2770 smtp_active_hostname = primary_hostname;
2772 /* If spool_directory wasn't set in the build-time configuration, it must have
2773 got set above. Of course, writing to the log may not work if log_file_path is
2774 not set, but it will at least get to syslog or somewhere, with any luck. */
2776 if (*spool_directory == 0)
2777 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
2780 /* Expand the spool directory name; it may, for example, contain the primary
2781 host name. Same comment about failure. */
2783 s = expand_string(spool_directory);
2785 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
2786 "\"%s\": %s", spool_directory, expand_string_message);
2787 spool_directory = s;
2789 /* Expand log_file_path, which must contain "%s" in any component that isn't
2790 the null string or "syslog". It is also allowed to contain one instance of %D.
2791 However, it must NOT contain % followed by anything else. */
2793 if (*log_file_path != 0)
2796 int sep = ':'; /* Fixed for log file path */
2797 s = expand_string(log_file_path);
2799 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
2800 "\"%s\": %s", log_file_path, expand_string_message);
2803 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
2806 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
2807 t = Ustrstr(sss, "%s");
2809 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
2810 "contain \"%%s\"", sss);
2812 t = Ustrchr(sss, '%');
2815 if (t[1] != 'D' || Ustrchr(t+2, '%') != NULL)
2816 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
2817 "unexpected \"%%\" character", s);
2824 /* Interpret syslog_facility into an integer argument for 'ident' param to
2825 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
2828 if (syslog_facility_str != NULL)
2831 uschar *s = syslog_facility_str;
2833 if ((Ustrlen(syslog_facility_str) >= 4) &&
2834 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
2837 for (i = 0; i < syslog_list_size; i++)
2839 if (strcmpic(s, syslog_list[i].name) == 0)
2841 syslog_facility = syslog_list[i].value;
2846 if (i >= syslog_list_size)
2848 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2849 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
2853 /* Expand pid_file_path */
2855 if (*pid_file_path != 0)
2857 s = expand_string(pid_file_path);
2859 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
2860 "\"%s\": %s", pid_file_path, expand_string_message);
2864 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
2867 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
2869 /* Unpick the SMTP rate limiting options, if set */
2871 if (smtp_ratelimit_mail != NULL)
2873 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
2874 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
2877 if (smtp_ratelimit_rcpt != NULL)
2879 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
2880 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
2883 /* The qualify domains default to the primary host name */
2885 if (qualify_domain_sender == NULL)
2886 qualify_domain_sender = primary_hostname;
2887 if (qualify_domain_recipient == NULL)
2888 qualify_domain_recipient = qualify_domain_sender;
2890 /* Setting system_filter_user in the configuration sets the gid as well if a
2891 name is given, but a numerical value does not. */
2893 if (system_filter_uid_set && !system_filter_gid_set)
2895 struct passwd *pw = getpwuid(system_filter_uid);
2897 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
2898 (long int)system_filter_uid);
2899 system_filter_gid = pw->pw_gid;
2900 system_filter_gid_set = TRUE;
2903 /* If the errors_reply_to field is set, check that it is syntactically valid
2904 and ensure it contains a domain. */
2906 if (errors_reply_to != NULL)
2909 int start, end, domain;
2910 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
2911 &start, &end, &domain, FALSE);
2913 if (recipient == NULL)
2914 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2915 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
2918 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2919 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
2922 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
2923 smtp_accept_max must also be set. */
2925 if (smtp_accept_max == 0 &&
2926 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
2927 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2928 "smtp_accept_max must be set if smtp_accept_queue or "
2929 "smtp_accept_max_per_host is set");
2931 /* Set up the host number if anything is specified. It is an expanded string
2932 so that it can be computed from the host name, for example. We do this last
2933 so as to ensure that everything else is set up before the expansion. */
2935 if (host_number_string != NULL)
2938 uschar *s = expand_string(host_number_string);
2939 long int n = Ustrtol(s, &end, 0);
2940 while (isspace(*end)) end++;
2942 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2943 "localhost_number value is not a number: %s", s);
2944 if (n > LOCALHOST_MAX)
2945 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2946 "localhost_number is greater than the maximum allowed value (%d)",
2952 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
2954 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
2955 tls_verify_certificates == NULL)
2956 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2957 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
2958 (tls_verify_hosts != NULL)? "" : "try_");
2964 /*************************************************
2965 * Initialize one driver *
2966 *************************************************/
2968 /* This is called once the driver's generic options, if any, have been read.
2969 We can now find the driver, set up defaults for the private options, and
2970 unset any "set" bits in the private options table (which might have been
2971 set by another incarnation of the same driver).
2974 d pointer to driver instance block, with generic
2976 drivers_available vector of available drivers
2977 size_of_info size of each block in drivers_available
2978 class class of driver, for error message
2980 Returns: pointer to the driver info block
2983 static driver_info *
2984 init_driver(driver_instance *d, driver_info *drivers_available,
2985 int size_of_info, uschar *class)
2989 for (dd = drivers_available; dd->driver_name[0] != 0;
2990 dd = (driver_info *)(((uschar *)dd) + size_of_info))
2992 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
2995 int len = dd->options_len;
2997 d->options_block = store_get(len);
2998 memcpy(d->options_block, dd->options_block, len);
2999 for (i = 0; i < *(dd->options_count); i++)
3000 dd->options[i].type &= ~opt_set;
3005 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3006 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3008 return NULL; /* never obeyed */
3014 /*************************************************
3015 * Initialize driver list *
3016 *************************************************/
3018 /* This function is called for routers, transports, and authentication
3019 mechanisms. It reads the data from the current point in the configuration file
3020 up to the end of the section, and sets up a chain of instance blocks according
3021 to the file's contents. The file will already have been opened by a call to
3022 readconf_main, and must be left open for subsequent reading of further data.
3024 Any errors cause a panic crash. Note that the blocks with names driver_info and
3025 driver_instance must map the first portions of all the _info and _instance
3026 blocks for this shared code to work.
3029 class "router", "transport", or "authenticator"
3030 anchor &routers, &transports, &auths
3031 drivers_available available drivers
3032 size_of_info size of each info block
3033 instance_default points to default data for an instance
3034 instance_size size of instance block
3035 driver_optionlist generic option list
3036 driver_optionlist_count count of generic option list
3042 readconf_driver_init(
3044 driver_instance **anchor,
3045 driver_info *drivers_available,
3047 void *instance_default,
3049 optionlist *driver_optionlist,
3050 int driver_optionlist_count)
3052 driver_instance **p = anchor;
3053 driver_instance *d = NULL;
3056 /* Now process the configuration lines */
3058 while ((buffer = get_config_line()) != NULL)
3062 /* Read the first name on the line and test for the start of a new driver.
3063 If this isn't the start of a new driver, the line will be re-read. */
3065 uschar *s = readconf_readname(name, sizeof(name), buffer);
3067 /* If the line starts with a name terminated by a colon, we are at the
3068 start of the definition of a new driver. The rest of the line must be
3075 /* Finish off initializing the previous driver. */
3079 if (d->driver_name == NULL)
3080 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3081 "no driver defined for %s \"%s\"", class, d->name);
3085 /* Check that we haven't already got a driver of this name */
3087 for (d = *anchor; d != NULL; d = d->next)
3088 if (Ustrcmp(name, d->name) == 0)
3089 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3090 "there are two %ss called \"%s\"", class, name);
3092 /* Set up a new driver instance data block on the chain, with
3093 its default values installed. */
3095 d = store_get(instance_size);
3096 memcpy(d, instance_default, instance_size);
3099 d->name = string_copy(name);
3101 /* Clear out the "set" bits in the generic options */
3103 for (i = 0; i < driver_optionlist_count; i++)
3104 driver_optionlist[i].type &= ~opt_set;
3106 /* Check nothing more on this line, then do the next loop iteration. */
3108 while (isspace(*s)) s++;
3109 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3113 /* Give an error if we have not set up a current driver yet. */
3115 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3116 "%s name missing", class);
3118 /* First look to see if this is a generic option; if it is "driver",
3119 initialize the driver. If is it not a generic option, we can look for a
3120 private option provided that the driver has been previously set up. */
3122 if (readconf_handle_option(buffer, driver_optionlist,
3123 driver_optionlist_count, d, NULL))
3125 if (d->info == NULL && d->driver_name != NULL)
3126 init_driver(d, drivers_available, size_of_info, class);
3129 /* Handle private options - pass the generic block because some may
3130 live therein. A flag with each option indicates if it is in the public
3133 else if (d->info != NULL)
3135 readconf_handle_option(buffer, d->info->options,
3136 *(d->info->options_count), d, US"option \"%s\" unknown");
3139 /* The option is not generic and the driver name has not yet been given. */
3141 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3142 "(\"driver\" must be specified before any private options)", name);
3145 /* Run the initialization function for the final driver. */
3149 if (d->driver_name == NULL)
3150 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3151 "no driver defined for %s \"%s\"", class, d->name);
3158 /*************************************************
3159 * Check driver dependency *
3160 *************************************************/
3162 /* This function is passed a driver instance and a string. It checks whether
3163 any of the string options for the driver contains the given string as an
3167 d points to a driver instance block
3168 s the string to search for
3170 Returns: TRUE if a dependency is found
3174 readconf_depends(driver_instance *d, uschar *s)
3176 int count = *(d->info->options_count);
3180 for (ol = d->info->options; ol < d->info->options + count; ol++)
3182 void *options_block;
3184 int type = ol->type & opt_mask;
3185 if (type != opt_stringptr) continue;
3186 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3187 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3188 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3190 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3191 isalnum(ss[Ustrlen(s)])) continue;
3192 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3193 d->name, ol->name, s);
3198 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3205 /*************************************************
3206 * Decode an error type for retries *
3207 *************************************************/
3209 /* This function is global because it is also called from the main
3210 program when testing retry information. It decodes strings such as "quota_7d"
3211 into numerical error codes.
3214 pp points to start of text
3215 p points past end of text
3216 basic_errno points to an int to receive the main error number
3217 more_errno points to an int to receive the secondary error data
3219 Returns: NULL if decoded correctly; else points to error text
3223 readconf_retry_error(uschar *pp, uschar *p, int *basic_errno, int *more_errno)
3227 while (q < p && *q != '_') q++;
3230 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3232 *basic_errno = ERRNO_EXIMQUOTA;
3233 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3234 return US"bad time value";
3237 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3239 *basic_errno = ECONNREFUSED;
3242 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3243 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3244 else return US"A or MX expected after \"refused\"";
3248 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3250 *basic_errno = ETIMEDOUT;
3254 int xlen = p - q - 1;
3257 static uschar *extras[] =
3258 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3259 static int values[] =
3260 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3262 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3264 if (strncmpic(x, extras[i], xlen) == 0)
3266 *more_errno = values[i];
3271 if (i >= sizeof(extras)/sizeof(uschar *))
3273 if (strncmpic(x, US"DNS", xlen) == 0)
3275 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3276 "available in retry rules (it has never worked) - treated as "
3279 else return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3284 else if (strncmpic(pp, US"rcpt_4", 6) == 0)
3287 int x = 255; /* means "any 4xx code" */
3288 if (p != pp + 8) bad = TRUE; else
3290 int a = pp[6], b = pp[7];
3294 if (isdigit(b)) x += b - '0';
3295 else if (b == 'x') x += 100;
3298 else if (a != 'x' || b != 'x') bad = TRUE;
3301 if (bad) return US"rcpt_4 must be followed by xx, dx, or dd, where "
3302 "x is literal and d is any digit";
3304 *basic_errno = ERRNO_RCPT4XX;
3305 *more_errno = x << 8;
3308 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3309 strncmpic(q+1, US"failed", p-q-1) == 0)
3311 *basic_errno = ERRNO_AUTHFAIL;
3314 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3315 return string_sprintf("unknown or malformed retry error \"%.*s\"", p-pp, pp);
3323 /*************************************************
3324 * Read retry information *
3325 *************************************************/
3327 /* Each line of retry information contains:
3329 . A domain name pattern or an address pattern;
3331 . An error name, possibly with additional data, or *;
3333 . An optional sequence of retry items, each consisting of an identifying
3334 letter, a cutoff time, and optional parameters.
3336 All this is decoded and placed into a control block. */
3339 /* Subroutine to read an argument, preceded by a comma and terminated
3340 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3341 1 = fixed point number (returned *1000).
3344 paddr pointer to pointer to current character; updated
3345 type 0 => read a time; 1 => read a fixed point number
3347 Returns: time in seconds or fixed point number * 1000
3351 retry_arg(uschar **paddr, int type)
3356 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3358 while (isspace(*p)) p++;
3360 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3362 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3363 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3369 return readconf_readtime(pp, *p, FALSE);
3371 return readconf_readfixed(pp, *p);
3373 return 0; /* Keep picky compilers happy */
3376 /* The function proper */
3379 readconf_retries(void)
3381 retry_config **chain = &retries;
3385 while ((p = get_config_line()) != NULL)
3387 retry_rule **rchain;
3390 next = store_get(sizeof(retry_config));
3393 chain = &(next->next);
3394 next->basic_errno = next->more_errno = 0;
3395 next->senders = NULL;
3397 rchain = &(next->rules);
3399 next->pattern = string_dequote(&p);
3400 while (isspace(*p)) p++;
3402 while (mac_isgraph(*p)) p++;
3403 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3404 "missing error type");
3406 /* Test error names for things we understand. */
3408 if ((error = readconf_retry_error(pp, p, &(next->basic_errno),
3409 &(next->more_errno))) != NULL)
3410 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3412 /* There may be an optional address list of senders to be used as another
3413 constraint on the rule. This was added later, so the syntax is a bit of a
3414 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3417 while (isspace(*p)) p++;
3418 if (Ustrncmp(p, "senders", 7) == 0)
3421 while (isspace(*p)) p++;
3422 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3423 "\"=\" expected after \"senders\" in retry rule");
3424 while (isspace(*p)) p++;
3425 next->senders = string_dequote(&p);
3428 /* Now the retry rules. Keep the maximum timeout encountered. */
3430 while (isspace(*p)) p++;
3434 retry_rule *rule = store_get(sizeof(retry_rule));
3436 rchain = &(rule->next);
3438 rule->rule = toupper(*p++);
3439 rule->timeout = retry_arg(&p, 0);
3440 if (rule->timeout > retry_maximum_timeout)
3441 retry_maximum_timeout = rule->timeout;
3445 case 'F': /* Fixed interval */
3446 rule->p1 = retry_arg(&p, 0);
3449 case 'G': /* Geometrically increasing intervals */
3450 rule->p1 = retry_arg(&p, 0);
3451 rule->p2 = retry_arg(&p, 1);
3455 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3459 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3460 (rule->rule == 'G' && rule->p2 < 1000))
3461 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3462 "bad parameters for retry rule");
3464 while (isspace(*p)) p++;
3468 while (isspace(*p)) p++;
3471 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3478 /*************************************************
3479 * Initialize authenticators *
3480 *************************************************/
3482 /* Read the authenticators section of the configuration file.
3491 auth_instance *au, *bu;
3492 readconf_driver_init(US"authenticator",
3493 (driver_instance **)(&auths), /* chain anchor */
3494 (driver_info *)auths_available, /* available drivers */
3495 sizeof(auth_info), /* size of info block */
3496 &auth_defaults, /* default values for generic options */
3497 sizeof(auth_instance), /* size of instance block */
3498 optionlist_auths, /* generic options */
3499 optionlist_auths_size);
3501 for (au = auths; au != NULL; au = au->next)
3503 if (au->public_name == NULL)
3504 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3505 "the %s authenticator", au->name);
3506 for (bu = au->next; bu != NULL; bu = bu->next)
3508 if (strcmpic(au->public_name, bu->public_name) == 0)
3510 if ((au->client && bu->client) || (au->server && bu->server))
3511 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
3512 "(%s and %s) have the same public name (%s)",
3513 (au->client)? US"client" : US"server", au->name, bu->name,
3523 /*************************************************
3524 * Read ACL information *
3525 *************************************************/
3527 /* If this run of Exim is not doing something that involves receiving a
3528 message, we can just skip over the ACL information. No need to parse it.
3530 First, we have a function for acl_read() to call back to get the next line. We
3531 need to remember the line we passed, because at the end it will contain the
3532 name of the next ACL. */
3534 static uschar *acl_line;
3539 acl_line = get_config_line();
3544 /* Now the main function:
3547 skip TRUE when this Exim process is doing something that will
3548 not need the ACL data
3554 readconf_acl(BOOL skip)
3558 /* Not receiving messages, don't need to parse the ACL data */
3562 DEBUG(D_acl) debug_printf("skipping ACL configuration - not needed\n");
3563 while ((p = get_config_line()) != NULL);
3567 /* Read each ACL and add it into the tree */
3569 acl_line = get_config_line();
3571 while(acl_line != NULL)
3577 p = readconf_readname(name, sizeof(name), acl_line);
3579 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing ACL name");
3581 node = store_get(sizeof(tree_node) + Ustrlen(name));
3582 Ustrcpy(node->name, name);
3583 if (!tree_insertnode(&acl_anchor, node))
3584 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3585 "there are two ACLs called \"%s\"", name);
3587 node->data.ptr = acl_read(acl_callback, &error);
3589 if (node->data.ptr == NULL && error != NULL)
3590 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
3596 /*************************************************
3597 * Read configuration for local_scan() *
3598 *************************************************/
3600 /* This function is called after "begin local_scan" is encountered in the
3601 configuration file. If the local_scan() function allows for configuration
3602 options, we can process them. Otherwise, we expire in a panic.
3609 local_scan_init(void)
3611 #ifndef LOCAL_SCAN_HAS_OPTIONS
3612 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
3613 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
3617 while ((p = get_config_line()) != NULL)
3619 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
3620 NULL, US"local_scan option \"%s\" unknown");
3627 /*************************************************
3628 * Read rest of configuration (after main) *
3629 *************************************************/
3631 /* This function reads the rest of the runtime configuration, after the main
3632 configuration. It is called only when actually needed. Each subsequent section
3633 of the configuration starts with a line of the form
3637 where the name is "routers", "transports", etc. A section is terminated by
3638 hitting the next "begin" line, and the next name is left in next_section.
3639 Because it may confuse people as to whether the names are singular or plural,
3640 we add "s" if it's missing. There is always enough room in next_section for
3641 this. This function is basically just a switch.
3644 skip_acl TRUE if ACL information is not needed
3649 static uschar *section_list[] = {
3659 readconf_rest(BOOL skip_acl)
3663 while(next_section[0] != 0)
3667 int last = sizeof(section_list) / sizeof(uschar *);
3669 int n = Ustrlen(next_section);
3671 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
3675 int c = strcmpic(next_section, section_list[mid]);
3677 if (c > 0) first = mid + 1; else last = mid;
3679 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3680 "\"%.*s\" is not a known configuration section name", n, next_section);
3681 mid = (last + first)/2;
3685 if (((had ^= bit) & bit) == 0)
3686 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3687 "\"%.*s\" section is repeated in the configuration file", n,
3692 case 0: readconf_acl(skip_acl); break;
3693 case 1: auths_init(); break;
3694 case 2: local_scan_init(); break;
3695 case 3: readconf_retries(); break;
3696 case 4: readconf_rewrites(); break;
3697 case 5: route_init(); break;
3698 case 6: transport_init(); break;
3702 fclose(config_file);
3705 /* End of readconf.c */