Testsuite: munge for platform errno variance
[exim.git] / src / src / readconf.c
CommitLineData
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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
80fea873 5/* Copyright (c) University of Cambridge 1995 - 2016 */
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6/* See the file NOTICE for conditions of use and distribution. */
7
8/* Functions for reading the configuration file, and for displaying
9overall configuration values. Thanks to Brian Candler for the original
10implementation of the conditional .ifdef etc. */
11
12#include "exim.h"
13
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14extern char **environ;
15
1ad6489e 16static void fn_smtp_receive_timeout(const uschar * name, const uschar * str);
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17static void save_config_line(const uschar* line);
18static void save_config_position(const uschar *file, int line);
3257ed4b 19static void print_config(BOOL admin, BOOL terse);
c0b9d3e8 20static void readconf_options_auths(void);
2478dbdf 21
1ad6489e 22
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23#define CSTATE_STACK_SIZE 10
24
25
26/* Structure for chain (stack) of .included files */
27
28typedef struct config_file_item {
29 struct config_file_item *next;
30 uschar *filename;
31 FILE *file;
32 int lineno;
33} config_file_item;
34
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35/* Structure for chain of configuration lines (-bP config) */
36
37typedef struct config_line_item {
38 struct config_line_item *next;
39 uschar *line;
40} config_line_item;
41
42static config_line_item* config_lines;
43
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44/* Structure of table of conditional words and their state transitions */
45
46typedef struct cond_item {
47 uschar *name;
48 int namelen;
49 int action1;
50 int action2;
51 int pushpop;
52} cond_item;
53
54/* Structure of table of syslog facility names and values */
55
56typedef struct syslog_fac_item {
57 uschar *name;
58 int value;
59} syslog_fac_item;
60
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61/* constants */
62static const char * const hidden = "<value not displayable>";
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63
64/* Static variables */
65
66static config_file_item *config_file_stack = NULL; /* For includes */
67
68static uschar *syslog_facility_str = NULL;
69static uschar next_section[24];
70static uschar time_buffer[24];
71
72/* State variables for conditional loading (.ifdef / .else / .endif) */
73
74static int cstate = 0;
75static int cstate_stack_ptr = -1;
76static int cstate_stack[CSTATE_STACK_SIZE];
77
78/* Table of state transitions for handling conditional inclusions. There are
79four possible state transitions:
80
81 .ifdef true
82 .ifdef false
83 .elifdef true (or .else)
84 .elifdef false
85
86.endif just causes the previous cstate to be popped off the stack */
87
88static int next_cstate[3][4] =
89 {
90 /* State 0: reading from file, or reading until next .else or .endif */
91 { 0, 1, 2, 2 },
92 /* State 1: condition failed, skipping until next .else or .endif */
93 { 2, 2, 0, 1 },
94 /* State 2: skipping until .endif */
95 { 2, 2, 2, 2 },
96 };
97
98/* Table of conditionals and the states to set. For each name, there are four
99values: the length of the name (to save computing it each time), the state to
100set if a macro was found in the line, the state to set if a macro was not found
101in the line, and a stack manipulation setting which is:
102
103 -1 pull state value off the stack
104 0 don't alter the stack
105 +1 push value onto stack, before setting new state
106*/
107
108static cond_item cond_list[] = {
109 { US"ifdef", 5, 0, 1, 1 },
110 { US"ifndef", 6, 1, 0, 1 },
111 { US"elifdef", 7, 2, 3, 0 },
112 { US"elifndef", 8, 3, 2, 0 },
113 { US"else", 4, 2, 2, 0 },
114 { US"endif", 5, 0, 0, -1 }
115};
116
117static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
118
119/* Table of syslog facility names and their values */
120
121static syslog_fac_item syslog_list[] = {
122 { US"mail", LOG_MAIL },
123 { US"user", LOG_USER },
124 { US"news", LOG_NEWS },
125 { US"uucp", LOG_UUCP },
126 { US"local0", LOG_LOCAL0 },
127 { US"local1", LOG_LOCAL1 },
128 { US"local2", LOG_LOCAL2 },
129 { US"local3", LOG_LOCAL3 },
130 { US"local4", LOG_LOCAL4 },
131 { US"local5", LOG_LOCAL5 },
132 { US"local6", LOG_LOCAL6 },
133 { US"local7", LOG_LOCAL7 },
134 { US"daemon", LOG_DAEMON }
135};
136
137static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
138
139
140
141
142/*************************************************
143* Main configuration options *
144*************************************************/
145
146/* The list of options that can be set in the main configuration file. This
147must be in alphabetic order because it is searched by binary chop. */
148
149static optionlist optionlist_config[] = {
150 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
151 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
152 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
153 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
154 { "accept_8bitmime", opt_bool, &accept_8bitmime },
155 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
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156#ifdef WITH_CONTENT_SCAN
157 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
158#endif
45b91596 159 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
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160 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
161 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
162 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
8ccd00b1 163#ifndef DISABLE_PRDR
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164 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
165#endif
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166#ifndef DISABLE_DKIM
167 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
168#endif
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169 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
170 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
171 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
172 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
173 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
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174#ifdef WITH_CONTENT_SCAN
175 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
176#endif
8f128379 177 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
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178 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
179 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
180 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
181#ifdef SUPPORT_TLS
182 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
183#endif
184 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
bc3c7bb7 185 { "add_environment", opt_stringptr, &add_environment },
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186 { "admin_groups", opt_gidlist, &admin_groups },
187 { "allow_domain_literals", opt_bool, &allow_domain_literals },
188 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
189 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
190 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
191 { "auto_thaw", opt_time, &auto_thaw },
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192#ifdef WITH_CONTENT_SCAN
193 { "av_scanner", opt_stringptr, &av_scanner },
194#endif
059ec3d9 195 { "bi_command", opt_stringptr, &bi_command },
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196#ifdef EXPERIMENTAL_BRIGHTMAIL
197 { "bmi_config_file", opt_stringptr, &bmi_config_file },
198#endif
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199 { "bounce_message_file", opt_stringptr, &bounce_message_file },
200 { "bounce_message_text", opt_stringptr, &bounce_message_text },
201 { "bounce_return_body", opt_bool, &bounce_return_body },
62b7cd08 202 { "bounce_return_linesize_limit", opt_mkint, &bounce_return_linesize_limit },
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203 { "bounce_return_message", opt_bool, &bounce_return_message },
204 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
205 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
206 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
207 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
208 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
209 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
210 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
211 { "check_log_inodes", opt_int, &check_log_inodes },
212 { "check_log_space", opt_Kint, &check_log_space },
a0d6ba8a 213 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
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214 { "check_spool_inodes", opt_int, &check_spool_inodes },
215 { "check_spool_space", opt_Kint, &check_spool_space },
aa368db3 216 { "chunking_advertise_hosts", opt_stringptr, &chunking_advertise_hosts },
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217 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
218 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
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219 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
220 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
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221#ifdef EXPERIMENTAL_DCC
222 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
223 { "dccifd_address", opt_stringptr, &dccifd_address },
224 { "dccifd_options", opt_stringptr, &dccifd_options },
225#endif
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226 { "delay_warning", opt_timelist, &delay_warning },
227 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
228 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
229 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
230 { "delivery_date_remove", opt_bool, &delivery_date_remove },
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231#ifdef ENABLE_DISABLE_FSYNC
232 { "disable_fsync", opt_bool, &disable_fsync },
233#endif
7e66e54d 234 { "disable_ipv6", opt_bool, &disable_ipv6 },
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235#ifndef DISABLE_DKIM
236 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
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237#endif
238#ifdef EXPERIMENTAL_DMARC
239 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
240 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
241 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
80a47a2c 242#endif
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243 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
244 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
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245 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
246 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
83712b39 247 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
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248 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
249 { "dns_retrans", opt_time, &dns_retrans },
250 { "dns_retry", opt_int, &dns_retry },
9820a77f 251 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
e97d1f08 252 { "dns_use_edns0", opt_int, &dns_use_edns0 },
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253 /* This option is now a no-op, retained for compability */
254 { "drop_cr", opt_bool, &drop_cr },
255/*********************************************************/
6c1c3d1d 256 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
0e22dfd1 257 { "dsn_from", opt_stringptr, &dsn_from },
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258 { "envelope_to_remove", opt_bool, &envelope_to_remove },
259 { "errors_copy", opt_stringptr, &errors_copy },
260 { "errors_reply_to", opt_stringptr, &errors_reply_to },
0cbf2b82 261#ifndef DISABLE_EVENT
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262 { "event_action", opt_stringptr, &event_action },
263#endif
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264 { "exim_group", opt_gid, &exim_gid },
265 { "exim_path", opt_stringptr, &exim_path },
266 { "exim_user", opt_uid, &exim_uid },
267 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
268 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
269 { "finduser_retries", opt_int, &finduser_retries },
270 { "freeze_tell", opt_stringptr, &freeze_tell },
271 { "gecos_name", opt_stringptr, &gecos_name },
272 { "gecos_pattern", opt_stringptr, &gecos_pattern },
83da1223 273#ifdef SUPPORT_TLS
2519e60d 274 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
e6060e2c 275 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
83da1223 276#endif
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277 { "header_line_maxsize", opt_int, &header_line_maxsize },
278 { "header_maxsize", opt_int, &header_maxsize },
279 { "headers_charset", opt_stringptr, &headers_charset },
280 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
281 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
282 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
283 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
284 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
285 { "hold_domains", opt_stringptr, &hold_domains },
286 { "host_lookup", opt_stringptr, &host_lookup },
287 { "host_lookup_order", opt_stringptr, &host_lookup_order },
288 { "host_reject_connection", opt_stringptr, &host_reject_connection },
289 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
cee5f132 290#ifdef SUPPORT_PROXY
7a2fa0bc 291 { "hosts_proxy", opt_stringptr, &hosts_proxy },
cee5f132 292#endif
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293 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
294#ifdef LOOKUP_IBASE
295 { "ibase_servers", opt_stringptr, &ibase_servers },
296#endif
297 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
298 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
299 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
bc3c7bb7 300 { "keep_environment", opt_stringptr, &keep_environment },
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301 { "keep_malformed", opt_time, &keep_malformed },
302#ifdef LOOKUP_LDAP
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303 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
304 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
305 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
306 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
307 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
059ec3d9 308 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
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309 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
310 { "ldap_start_tls", opt_bool, &eldap_start_tls },
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311 { "ldap_version", opt_int, &eldap_version },
312#endif
313 { "local_from_check", opt_bool, &local_from_check },
314 { "local_from_prefix", opt_stringptr, &local_from_prefix },
315 { "local_from_suffix", opt_stringptr, &local_from_suffix },
316 { "local_interfaces", opt_stringptr, &local_interfaces },
317 { "local_scan_timeout", opt_time, &local_scan_timeout },
318 { "local_sender_retain", opt_bool, &local_sender_retain },
319 { "localhost_number", opt_stringptr, &host_number_string },
320 { "log_file_path", opt_stringptr, &log_file_path },
321 { "log_selector", opt_stringptr, &log_selector_string },
322 { "log_timezone", opt_bool, &log_timezone },
323 { "lookup_open_max", opt_int, &lookup_open_max },
324 { "max_username_length", opt_int, &max_username_length },
ddea74fa 325 { "message_body_newlines", opt_bool, &message_body_newlines },
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326 { "message_body_visible", opt_mkint, &message_body_visible },
327 { "message_id_header_domain", opt_stringptr, &message_id_domain },
328 { "message_id_header_text", opt_stringptr, &message_id_text },
329 { "message_logs", opt_bool, &message_logs },
330 { "message_size_limit", opt_stringptr, &message_size_limit },
331#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
332 { "move_frozen_messages", opt_bool, &move_frozen_messages },
333#endif
334 { "mua_wrapper", opt_bool, &mua_wrapper },
335#ifdef LOOKUP_MYSQL
336 { "mysql_servers", opt_stringptr, &mysql_servers },
337#endif
338 { "never_users", opt_uidlist, &never_users },
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339#ifdef SUPPORT_TLS
340 { "openssl_options", opt_stringptr, &openssl_options },
341#endif
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342#ifdef LOOKUP_ORACLE
343 { "oracle_servers", opt_stringptr, &oracle_servers },
344#endif
345 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
346#ifdef EXIM_PERL
347 { "perl_at_start", opt_bool, &opt_perl_at_start },
348 { "perl_startup", opt_stringptr, &opt_perl_startup },
2f680c0c 349 { "perl_taintmode", opt_bool, &opt_perl_taintmode },
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350#endif
351#ifdef LOOKUP_PGSQL
352 { "pgsql_servers", opt_stringptr, &pgsql_servers },
353#endif
354 { "pid_file_path", opt_stringptr, &pid_file_path },
355 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
8ccd00b1 356#ifndef DISABLE_PRDR
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357 { "prdr_enable", opt_bool, &prdr_enable },
358#endif
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359 { "preserve_message_logs", opt_bool, &preserve_message_logs },
360 { "primary_hostname", opt_stringptr, &primary_hostname },
361 { "print_topbitchars", opt_bool, &print_topbitchars },
362 { "process_log_path", opt_stringptr, &process_log_path },
363 { "prod_requires_admin", opt_bool, &prod_requires_admin },
364 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
365 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
366 { "queue_domains", opt_stringptr, &queue_domains },
367 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
368 { "queue_only", opt_bool, &queue_only },
369 { "queue_only_file", opt_stringptr, &queue_only_file },
370 { "queue_only_load", opt_fixed, &queue_only_load },
8669f003 371 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
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372 { "queue_only_override", opt_bool, &queue_only_override },
373 { "queue_run_in_order", opt_bool, &queue_run_in_order },
0cd5fd23 374 { "queue_run_max", opt_stringptr, &queue_run_max },
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375 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
376 { "receive_timeout", opt_time, &receive_timeout },
377 { "received_header_text", opt_stringptr, &received_header_text },
378 { "received_headers_max", opt_int, &received_headers_max },
379 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
380 { "recipients_max", opt_int, &recipients_max },
381 { "recipients_max_reject", opt_bool, &recipients_max_reject },
de78e2d5 382#ifdef LOOKUP_REDIS
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383 { "redis_servers", opt_stringptr, &redis_servers },
384#endif
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385 { "remote_max_parallel", opt_int, &remote_max_parallel },
386 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
387 { "retry_data_expire", opt_time, &retry_data_expire },
388 { "retry_interval_max", opt_time, &retry_interval_max },
389 { "return_path_remove", opt_bool, &return_path_remove },
390 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
391 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
392 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
393 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
846430d9 394 { "slow_lookup_log", opt_int, &slow_lookup_log },
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395 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
396 { "smtp_accept_max", opt_int, &smtp_accept_max },
397 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
398 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
399 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
400 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
401 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
402 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
403 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
404 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
405 { "smtp_banner", opt_stringptr, &smtp_banner },
406 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
407 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
408 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
409 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
410 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
411 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
412 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
413 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
414 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
415 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
416 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
1ad6489e 417 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
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418 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
419 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
8c5d388a 420#ifdef SUPPORT_I18N
3d1451ea
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421 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
422#endif
8523533c
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423#ifdef WITH_CONTENT_SCAN
424 { "spamd_address", opt_stringptr, &spamd_address },
65a7d8c3
NM
425#endif
426#ifdef EXPERIMENTAL_SPF
427 { "spf_guess", opt_stringptr, &spf_guess },
8523533c 428#endif
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429 { "split_spool_directory", opt_bool, &split_spool_directory },
430 { "spool_directory", opt_stringptr, &spool_directory },
31480e42
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431#ifdef LOOKUP_SQLITE
432 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
433#endif
8523533c
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434#ifdef EXPERIMENTAL_SRS
435 { "srs_config", opt_stringptr, &srs_config },
384152a6
TK
436 { "srs_hashlength", opt_int, &srs_hashlength },
437 { "srs_hashmin", opt_int, &srs_hashmin },
438 { "srs_maxage", opt_int, &srs_maxage },
439 { "srs_secrets", opt_stringptr, &srs_secrets },
440 { "srs_usehash", opt_bool, &srs_usehash },
441 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
8523533c 442#endif
38a0a95f 443 { "strict_acl_vars", opt_bool, &strict_acl_vars },
059ec3d9
PH
444 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
445 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
446 { "syslog_duplication", opt_bool, &syslog_duplication },
447 { "syslog_facility", opt_stringptr, &syslog_facility_str },
448 { "syslog_processname", opt_stringptr, &syslog_processname },
449 { "syslog_timestamp", opt_bool, &syslog_timestamp },
450 { "system_filter", opt_stringptr, &system_filter },
451 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
452 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
453 { "system_filter_group", opt_gid, &system_filter_gid },
454 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
455 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
456 { "system_filter_user", opt_uid, &system_filter_uid },
457 { "tcp_nodelay", opt_bool, &tcp_nodelay },
5dc43717
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458#ifdef USE_TCP_WRAPPERS
459 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
460#endif
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461 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
462 { "timezone", opt_stringptr, &timezone_string },
059ec3d9 463 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
23f3dc67 464#ifdef SUPPORT_TLS
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465 { "tls_certificate", opt_stringptr, &tls_certificate },
466 { "tls_crl", opt_stringptr, &tls_crl },
3375e053 467 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
059ec3d9 468 { "tls_dhparam", opt_stringptr, &tls_dhparam },
10ca4f1c 469 { "tls_eccurve", opt_stringptr, &tls_eccurve },
f2de3a33 470# ifndef DISABLE_OCSP
3f7eeb86 471 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
817d9f57
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472# endif
473 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
059ec3d9
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474 { "tls_privatekey", opt_stringptr, &tls_privatekey },
475 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
476 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
477 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
478 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
479 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
480#endif
481 { "trusted_groups", opt_gidlist, &trusted_groups },
482 { "trusted_users", opt_uidlist, &trusted_users },
483 { "unknown_login", opt_stringptr, &unknown_login },
484 { "unknown_username", opt_stringptr, &unknown_username },
485 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
486 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
487 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
488 { "warn_message_file", opt_stringptr, &warn_message_file },
489 { "write_rejectlog", opt_bool, &write_rejectlog }
490};
491
d7bed771 492static int optionlist_config_size = nelem(optionlist_config);
059ec3d9
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493
494
495
496/*************************************************
497* Find the name of an option *
498*************************************************/
499
500/* This function is to aid debugging. Various functions take arguments that are
501pointer variables in the options table or in option tables for various drivers.
502For debugging output, it is useful to be able to find the name of the option
503which is currently being processed. This function finds it, if it exists, by
504searching the table(s).
505
506Arguments: a value that is presumed to be in the table above
507Returns: the option name, or an empty string
508*/
509
510uschar *
511readconf_find_option(void *p)
512{
513int i;
514router_instance *r;
515transport_instance *t;
516
c0b9d3e8 517for (i = 0; i < nelem(optionlist_config); i++)
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518 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
519
d7bed771 520for (r = routers; r; r = r->next)
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521 {
522 router_info *ri = r->info;
c4b738a9 523 for (i = 0; i < *ri->options_count; i++)
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PH
524 {
525 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
526 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
527 return US ri->options[i].name;
528 }
529 }
530
d7bed771 531for (t = transports; t; t = t->next)
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532 {
533 transport_info *ti = t->info;
c4b738a9 534 for (i = 0; i < *ti->options_count; i++)
059ec3d9 535 {
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536 optionlist * op = &ti->options[i];
537 if ((op->type & opt_mask) != opt_stringptr) continue;
538 if (p == ( op->type & opt_public
539 ? (char *)t
540 : (char *)t->options_block
541 )
542 + (long int)op->value)
543 return US op->name;
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PH
544 }
545 }
546
547return US"";
548}
549
550
551
552
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553/*************************************************
554* Deal with an assignment to a macro *
555*************************************************/
556
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557/* We have a new definition. The macro_item structure includes a final vector
558called "name" which is one byte long. Thus, adding "namelen" gives us enough
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559room to store the "name" string.
560If a builtin macro we place at head of list, else tail. This lets us lazy-create
561builtins. */
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562
563macro_item *
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564macro_create(const uschar * name, const uschar * val,
565 BOOL command_line, BOOL builtin)
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566{
567unsigned namelen = Ustrlen(name);
568macro_item * m = store_get(sizeof(macro_item) + namelen);
569
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570if (!macros)
571 {
572 macros = m;
573 mlast = m;
574 m->next = NULL;
575 }
576else if (builtin)
577 {
578 m->next = macros;
579 macros = m;
580 }
581else
582 {
583 mlast->next = m;
584 mlast = m;
585 m->next = NULL;
586 }
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587m->command_line = command_line;
588m->namelen = namelen;
589m->replacement = string_copy(val);
590Ustrcpy(m->name, name);
591return m;
592}
593
594
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595/* This function is called when a line that starts with an upper case letter is
596encountered. The argument "line" should contain a complete logical line, and
597start with the first letter of the macro name. The macro name and the
598replacement text are extracted and stored. Redefinition of existing,
599non-command line, macros is permitted using '==' instead of '='.
600
601Arguments:
602 s points to the start of the logical line
603
604Returns: nothing
605*/
606
dc5d51dc 607static void
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608read_macro_assignment(uschar *s)
609{
610uschar name[64];
611int namelen = 0;
612BOOL redef = FALSE;
613macro_item *m;
cf00dad6
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614
615while (isalnum(*s) || *s == '_')
616 {
617 if (namelen >= sizeof(name) - 1)
618 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
ef840681 619 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
cf00dad6
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620 name[namelen++] = *s++;
621 }
622name[namelen] = 0;
623
624while (isspace(*s)) s++;
625if (*s++ != '=')
626 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
627
628if (*s == '=')
629 {
630 redef = TRUE;
631 s++;
632 }
633while (isspace(*s)) s++;
634
635/* If an existing macro of the same name was defined on the command line, we
636just skip this definition. It's an error to attempt to redefine a macro without
637redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
638It is also an error to define a macro whose name begins with the name of a
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639previously defined macro. This is the requirement that make using a tree
640for macros hard; we must check all macros for the substring. Perhaps a
641sorted list, and a bsearch, would work?
642Note: it is documented that the other way round works. */
cf00dad6 643
c193398d 644for (m = macros; m; m = m->next)
cf00dad6 645 {
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PH
646 if (Ustrcmp(m->name, name) == 0)
647 {
648 if (!m->command_line && !redef)
649 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
650 "defined (use \"==\" if you want to redefine it", name);
651 break;
652 }
653
c193398d 654 if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
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655 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
656 "a macro because previously defined macro \"%s\" is a substring",
657 name, m->name);
658
659 /* We cannot have this test, because it is documented that a substring
660 macro is permitted (there is even an example).
661 *
c193398d 662 * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
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663 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
664 * "a macro because it is a substring of previously defined macro \"%s\"",
665 * name, m->name);
666 */
cf00dad6
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667 }
668
669/* Check for an overriding command-line definition. */
670
c193398d 671if (m && m->command_line) return;
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672
673/* Redefinition must refer to an existing macro. */
674
675if (redef)
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676 if (m)
677 m->replacement = string_copy(s);
678 else
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679 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
680 "\"%s\"", name);
cf00dad6 681
c193398d 682/* We have a new definition. */
cf00dad6 683else
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684 (void) macro_create(name, s, FALSE, FALSE);
685}
686
687
688
689
690
691/*************************************************/
692/* Create compile-time feature macros */
693static void
694readconf_features(void)
695{
696/* Probably we could work out a static initialiser for wherever
697macros are stored, but this will do for now. Some names are awkward
698due to conflicts with other common macros. */
699
700#ifdef SUPPORT_CRYPTEQ
701 macro_create(US"_HAVE_CRYPTEQ", US"y", FALSE, TRUE);
702#endif
703#if HAVE_ICONV
704 macro_create(US"_HAVE_ICONV", US"y", FALSE, TRUE);
705#endif
706#if HAVE_IPV6
707 macro_create(US"_HAVE_IPV6", US"y", FALSE, TRUE);
708#endif
709#ifdef HAVE_SETCLASSRESOURCES
710 macro_create(US"_HAVE_SETCLASSRESOURCES", US"y", FALSE, TRUE);
711#endif
712#ifdef SUPPORT_PAM
713 macro_create(US"_HAVE_PAM", US"y", FALSE, TRUE);
714#endif
715#ifdef EXIM_PERL
716 macro_create(US"_HAVE_PERL", US"y", FALSE, TRUE);
717#endif
718#ifdef EXPAND_DLFUNC
719 macro_create(US"_HAVE_DLFUNC", US"y", FALSE, TRUE);
720#endif
721#ifdef USE_TCP_WRAPPERS
722 macro_create(US"_HAVE_TCPWRAPPERS", US"y", FALSE, TRUE);
723#endif
724#ifdef SUPPORT_TLS
725 macro_create(US"_HAVE_TLS", US"y", FALSE, TRUE);
726# ifdef USE_GNUTLS
727 macro_create(US"_HAVE_GNUTLS", US"y", FALSE, TRUE);
728# else
729 macro_create(US"_HAVE_OPENSSL", US"y", FALSE, TRUE);
730# endif
731#endif
732#ifdef SUPPORT_TRANSLATE_IP_ADDRESS
733 macro_create(US"_HAVE_TRANSLATE_IP_ADDRESS", US"y", FALSE, TRUE);
734#endif
735#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
736 macro_create(US"_HAVE_MOVE_FROZEN_MESSAGES", US"y", FALSE, TRUE);
737#endif
738#ifdef WITH_CONTENT_SCAN
739 macro_create(US"_HAVE_CONTENT_SCANNING", US"y", FALSE, TRUE);
740#endif
741#ifndef DISABLE_DKIM
742 macro_create(US"_HAVE_DKIM", US"y", FALSE, TRUE);
743#endif
744#ifndef DISABLE_DNSSEC
745 macro_create(US"_HAVE_DNSSEC", US"y", FALSE, TRUE);
746#endif
747#ifndef DISABLE_EVENT
748 macro_create(US"_HAVE_EVENT", US"y", FALSE, TRUE);
749#endif
750#ifdef SUPPORT_I18N
751 macro_create(US"_HAVE_I18N", US"y", FALSE, TRUE);
752#endif
753#ifndef DISABLE_OCSP
754 macro_create(US"_HAVE_OCSP", US"y", FALSE, TRUE);
755#endif
756#ifndef DISABLE_PRDR
757 macro_create(US"_HAVE_PRDR", US"y", FALSE, TRUE);
758#endif
759#ifdef SUPPORT_PROXY
760 macro_create(US"_HAVE_PROXY", US"y", FALSE, TRUE);
761#endif
762#ifdef SUPPORT_SOCKS
763 macro_create(US"_HAVE_SOCKS", US"y", FALSE, TRUE);
764#endif
765#ifdef EXPERIMENTAL_LMDB
766 macro_create(US"_HAVE_LMDB", US"y", FALSE, TRUE);
767#endif
768#ifdef EXPERIMENTAL_SPF
769 macro_create(US"_HAVE_SPF", US"y", FALSE, TRUE);
770#endif
771#ifdef EXPERIMENTAL_SRS
772 macro_create(US"_HAVE_SRS", US"y", FALSE, TRUE);
773#endif
774#ifdef EXPERIMENTAL_BRIGHTMAIL
775 macro_create(US"_HAVE_BRIGHTMAIL", US"y", FALSE, TRUE);
776#endif
777#ifdef EXPERIMENTAL_DANE
778 macro_create(US"_HAVE_DANE", US"y", FALSE, TRUE);
779#endif
780#ifdef EXPERIMENTAL_DCC
781 macro_create(US"_HAVE_DCC", US"y", FALSE, TRUE);
782#endif
783#ifdef EXPERIMENTAL_DMARC
784 macro_create(US"_HAVE_DMARC", US"y", FALSE, TRUE);
785#endif
786#ifdef EXPERIMENTAL_DSN_INFO
787 macro_create(US"_HAVE_DSN_INFO", US"y", FALSE, TRUE);
788#endif
789
790#ifdef LOOKUP_LSEARCH
791 macro_create(US"_HAVE_LKUP_LSEARCH", US"y", FALSE, TRUE);
792#endif
793#ifdef LOOKUP_CDB
794 macro_create(US"_HAVE_LKUP_CDB", US"y", FALSE, TRUE);
795#endif
796#ifdef LOOKUP_DBM
797 macro_create(US"_HAVE_LKUP_DBM", US"y", FALSE, TRUE);
798#endif
799#ifdef LOOKUP_DNSDB
800 macro_create(US"_HAVE_LKUP_DNSDB", US"y", FALSE, TRUE);
801#endif
802#ifdef LOOKUP_DSEARCH
803 macro_create(US"_HAVE_LKUP_DSEARCH", US"y", FALSE, TRUE);
804#endif
805#ifdef LOOKUP_IBASE
806 macro_create(US"_HAVE_LKUP_IBASE", US"y", FALSE, TRUE);
807#endif
808#ifdef LOOKUP_LDAP
809 macro_create(US"_HAVE_LKUP_LDAP", US"y", FALSE, TRUE);
810#endif
811#ifdef EXPERIMENTAL_LMDB
812 macro_create(US"_HAVE_LKUP_LMDB", US"y", FALSE, TRUE);
813#endif
814#ifdef LOOKUP_MYSQL
815 macro_create(US"_HAVE_LKUP_MYSQL", US"y", FALSE, TRUE);
816#endif
817#ifdef LOOKUP_NIS
818 macro_create(US"_HAVE_LKUP_NIS", US"y", FALSE, TRUE);
819#endif
820#ifdef LOOKUP_NISPLUS
821 macro_create(US"_HAVE_LKUP_NISPLUS", US"y", FALSE, TRUE);
822#endif
823#ifdef LOOKUP_ORACLE
824 macro_create(US"_HAVE_LKUP_ORACLE", US"y", FALSE, TRUE);
825#endif
826#ifdef LOOKUP_PASSWD
827 macro_create(US"_HAVE_LKUP_PASSWD", US"y", FALSE, TRUE);
828#endif
829#ifdef LOOKUP_PGSQL
830 macro_create(US"_HAVE_LKUP_PGSQL", US"y", FALSE, TRUE);
831#endif
832#ifdef LOOKUP_REDIS
833 macro_create(US"_HAVE_LKUP_REDIS", US"y", FALSE, TRUE);
834#endif
835#ifdef LOOKUP_SQLITE
836 macro_create(US"_HAVE_LKUP_SQLITE", US"y", FALSE, TRUE);
837#endif
838#ifdef LOOKUP_TESTDB
839 macro_create(US"_HAVE_LKUP_TESTDB", US"y", FALSE, TRUE);
840#endif
841#ifdef LOOKUP_WHOSON
842 macro_create(US"_HAVE_LKUP_WHOSON", US"y", FALSE, TRUE);
843#endif
844
845#ifdef TRANSPORT_APPENDFILE
846# ifdef SUPPORT_MAILDIR
847 macro_create(US"_HAVE_TPT_APPEND_MAILDR", US"y", FALSE, TRUE);
848# endif
849# ifdef SUPPORT_MAILSTORE
850 macro_create(US"_HAVE_TPT_APPEND_MAILSTORE", US"y", FALSE, TRUE);
851# endif
852# ifdef SUPPORT_MBX
853 macro_create(US"_HAVE_TPT_APPEND_MBX", US"y", FALSE, TRUE);
854# endif
855#endif
856}
857
858
859void
860readconf_options_from_list(optionlist * opts, unsigned nopt, uschar * group)
861{
862int i;
863const uschar * s;
864
865/* Walk the array backwards to get substring-conflict names */
866for (i = nopt-1; i >= 0; i--) if (*(s = opts[i].name) && *s != '*')
867 macro_create(string_sprintf("_OPT_%T_%T", group, s), US"y", FALSE, TRUE);
cf00dad6
PH
868}
869
870
8e6c4db1
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871static void
872readconf_options(void)
873{
874readconf_options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN");
875readconf_options_routers();
876readconf_options_transports();
877readconf_options_auths();
878}
cf00dad6 879
8e6c4db1
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880static void
881macros_create_builtin(void)
882{
883readconf_features();
884readconf_options();
885macros_builtin_created = TRUE;
886}
cf00dad6 887
059ec3d9
PH
888
889/*************************************************
890* Read configuration line *
891*************************************************/
892
893/* A logical line of text is read from the configuration file into the big
894buffer, taking account of macros, .includes, and continuations. The size of
895big_buffer is increased if necessary. The count of configuration lines is
896maintained. Physical input lines starting with # (ignoring leading white space,
897and after macro replacement) and empty logical lines are always ignored.
898Leading and trailing spaces are removed.
899
900If we hit a line of the form "begin xxxx", the xxxx is placed in the
901next_section vector, and the function returns NULL, indicating the end of a
902configuration section. On end-of-file, NULL is returned with next_section
903empty.
904
905Arguments: none
906
907Returns: a pointer to the first non-blank in the line,
908 or NULL if eof or end of section is reached
909*/
910
911static uschar *
912get_config_line(void)
913{
914int startoffset = 0; /* To first non-blank char in logical line */
915int len = 0; /* Of logical line so far */
916int newlen;
917uschar *s, *ss;
918macro_item *m;
919BOOL macro_found;
920
921/* Loop for handling continuation lines, skipping comments, and dealing with
922.include files. */
923
924for (;;)
925 {
926 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
927 {
928 if (config_file_stack != NULL) /* EOF inside .include */
929 {
f1e894f3 930 (void)fclose(config_file);
059ec3d9
PH
931 config_file = config_file_stack->file;
932 config_filename = config_file_stack->filename;
933 config_lineno = config_file_stack->lineno;
934 config_file_stack = config_file_stack->next;
bf3c2c6b
HSHR
935 if (config_lines)
936 save_config_position(config_filename, config_lineno);
059ec3d9
PH
937 continue;
938 }
939
940 /* EOF at top level */
941
942 if (cstate_stack_ptr >= 0)
943 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
944 "Unexpected end of configuration file: .endif missing");
945
946 if (len != 0) break; /* EOF after continuation */
947 next_section[0] = 0; /* EOF at start of logical line */
948 return NULL;
949 }
950
951 config_lineno++;
952 newlen = len + Ustrlen(big_buffer + len);
953
bf3c2c6b
HSHR
954 if (config_lines && config_lineno == 1)
955 save_config_position(config_filename, config_lineno);
956
059ec3d9
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957 /* Handle pathologically long physical lines - yes, it did happen - by
958 extending big_buffer at this point. The code also copes with very long
959 logical lines. */
960
961 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
962 {
963 uschar *newbuffer;
964 big_buffer_size += BIG_BUFFER_SIZE;
965 newbuffer = store_malloc(big_buffer_size);
966
967 /* This use of strcpy is OK because we know that the string in the old
968 buffer is shorter than the new buffer. */
969
970 Ustrcpy(newbuffer, big_buffer);
971 store_free(big_buffer);
972 big_buffer = newbuffer;
973 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
974 break;
975 newlen += Ustrlen(big_buffer + newlen);
976 }
977
978 /* Find the true start of the physical line - leading spaces are always
979 ignored. */
980
981 ss = big_buffer + len;
982 while (isspace(*ss)) ss++;
983
984 /* Process the physical line for macros. If this is the start of the logical
985 line, skip over initial text at the start of the line if it starts with an
986 upper case character followed by a sequence of name characters and an equals
987 sign, because that is the definition of a new macro, and we don't do
988 replacement therein. */
989
990 s = ss;
991 if (len == 0 && isupper(*s))
992 {
993 while (isalnum(*s) || *s == '_') s++;
994 while (isspace(*s)) s++;
995 if (*s != '=') s = ss; /* Not a macro definition */
996 }
997
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998 /* If the builtin macros are not yet defined, and the line contains an
999 underscrore followed by an one of the three possible chars used by
1000 builtins, create them. */
1001
1002 if (!macros_builtin_created)
1003 {
1004 const uschar * t, * p;
1005 uschar c;
1006 for (t = s; (p = CUstrchr(t, '_')); t = p+1)
1007 if (c = p[1], c == 'O' || c == 'D' || c == 'H')
1008 {
1009 macros_create_builtin();
1010 break;
1011 }
1012 }
1013
059ec3d9
PH
1014 /* For each defined macro, scan the line (from after XXX= if present),
1015 replacing all occurrences of the macro. */
1016
1017 macro_found = FALSE;
a4034eb8 1018 for (m = macros; m; m = m->next)
059ec3d9
PH
1019 {
1020 uschar *p, *pp;
1021 uschar *t = s;
1022
1023 while ((p = Ustrstr(t, m->name)) != NULL)
1024 {
1025 int moveby;
059ec3d9
PH
1026 int replen = Ustrlen(m->replacement);
1027
1028 /* Expand the buffer if necessary */
1029
c193398d 1030 while (newlen - m->namelen + replen + 1 > big_buffer_size)
059ec3d9
PH
1031 {
1032 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
1033 uschar *newbuffer = store_malloc(newsize);
1034 memcpy(newbuffer, big_buffer, newlen + 1);
1035 p = newbuffer + (p - big_buffer);
1036 s = newbuffer + (s - big_buffer);
1037 ss = newbuffer + (ss - big_buffer);
1038 t = newbuffer + (t - big_buffer);
1039 big_buffer_size = newsize;
1040 store_free(big_buffer);
1041 big_buffer = newbuffer;
1042 }
1043
1044 /* Shuffle the remaining characters up or down in the buffer before
1045 copying in the replacement text. Don't rescan the replacement for this
1046 same macro. */
1047
c193398d
JH
1048 pp = p + m->namelen;
1049 if ((moveby = replen - m->namelen) != 0)
059ec3d9
PH
1050 {
1051 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
1052 newlen += moveby;
1053 }
1054 Ustrncpy(p, m->replacement, replen);
1055 t = p + replen;
1056 macro_found = TRUE;
1057 }
1058 }
1059
1060 /* An empty macro replacement at the start of a line could mean that ss no
1061 longer points to the first non-blank character. */
1062
1063 while (isspace(*ss)) ss++;
1064
1065 /* Check for comment lines - these are physical lines. */
1066
1067 if (*ss == '#') continue;
1068
1069 /* Handle conditionals, which are also applied to physical lines. Conditions
1070 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
1071 expansion occured on the rest of the line. A preliminary test for the leading
1072 '.' saves effort on most lines. */
1073
1074 if (*ss == '.')
1075 {
1076 int i;
1077
1078 /* Search the list of conditional directives */
1079
1080 for (i = 0; i < cond_list_size; i++)
1081 {
1082 int n;
1083 cond_item *c = cond_list+i;
1084 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
1085
1086 /* The following character must be white space or end of string */
1087
1088 n = ss[1 + c->namelen];
1089 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
1090
1091 /* .ifdef and .ifndef push the current state onto the stack, then set
1092 a new one from the table. Stack overflow is an error */
1093
1094 if (c->pushpop > 0)
1095 {
1096 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
1097 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1098 ".%s nested too deeply", c->name);
1099 cstate_stack[++cstate_stack_ptr] = cstate;
1100 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
1101 }
1102
1103 /* For any of the others, stack underflow is an error. The next state
1104 comes either from the stack (.endif) or from the table. */
1105
1106 else
1107 {
1108 if (cstate_stack_ptr < 0)
1109 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1110 ".%s without matching .ifdef", c->name);
1111 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
1112 next_cstate[cstate][macro_found? c->action1 : c->action2];
1113 }
1114
1115 /* Having dealt with a directive, break the loop */
1116
1117 break;
1118 }
1119
1120 /* If we have handled a conditional directive, continue with the next
1121 physical line. Otherwise, fall through. */
1122
1123 if (i < cond_list_size) continue;
1124 }
1125
1126 /* If the conditional state is not 0 (actively using these lines), ignore
1127 this input line. */
1128
1129 if (cstate != 0) continue; /* Conditional skip */
1130
1131 /* Handle .include lines - these are also physical lines. */
1132
1133 if (Ustrncmp(ss, ".include", 8) == 0 &&
1134 (isspace(ss[8]) ||
1135 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
1136 {
1137 uschar *t;
1138 int include_if_exists = isspace(ss[8])? 0 : 10;
1139 config_file_item *save;
1140 struct stat statbuf;
1141
1142 ss += 9 + include_if_exists;
1143 while (isspace(*ss)) ss++;
1144 t = ss + Ustrlen(ss);
1145 while (t > ss && isspace(t[-1])) t--;
1146 if (*ss == '\"' && t[-1] == '\"')
1147 {
1148 ss++;
1149 t--;
1150 }
1151 *t = 0;
1152
145396a6
PH
1153 if (*ss != '/')
1154 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
1155 "absolute path \"%s\"", ss);
1156
059ec3d9
PH
1157 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
1158
bf3c2c6b
HSHR
1159 if (config_lines)
1160 save_config_position(config_filename, config_lineno);
059ec3d9
PH
1161 save = store_get(sizeof(config_file_item));
1162 save->next = config_file_stack;
1163 config_file_stack = save;
1164 save->file = config_file;
1165 save->filename = config_filename;
1166 save->lineno = config_lineno;
1167
10c50704 1168 if (!(config_file = Ufopen(ss, "rb")))
059ec3d9
PH
1169 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
1170 "configuration file %s", ss);
10c50704 1171
059ec3d9
PH
1172 config_filename = string_copy(ss);
1173 config_lineno = 0;
1174 continue;
1175 }
1176
1177 /* If this is the start of the logical line, remember where the non-blank
1178 data starts. Otherwise shuffle down continuation lines to remove leading
1179 white space. */
1180
1181 if (len == 0)
1182 startoffset = ss - big_buffer;
1183 else
1184 {
1185 s = big_buffer + len;
1186 if (ss > s)
1187 {
1188 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1189 newlen -= ss - s;
1190 }
1191 }
1192
1193 /* Accept the new addition to the line. Remove trailing white space. */
1194
1195 len = newlen;
1196 while (len > 0 && isspace(big_buffer[len-1])) len--;
1197 big_buffer[len] = 0;
1198
1199 /* We are done if the line does not end in backslash and contains some data.
1200 Empty logical lines are ignored. For continuations, remove the backslash and
1201 go round the loop to read the continuation line. */
1202
1203 if (len > 0)
1204 {
1205 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1206 big_buffer[--len] = 0; /* Remove backslash */
1207 }
1208 } /* Loop for reading multiple physical lines */
1209
1210/* We now have a logical line. Test for the end of a configuration section (or,
1211more accurately, for the start of the next section). Place the name of the next
1212section in next_section, and return NULL. If the name given is longer than
1213next_section, truncate it. It will be unrecognized later, because all the known
1214section names do fit. Leave space for pluralizing. */
1215
1216s = big_buffer + startoffset; /* First non-space character */
bf3c2c6b
HSHR
1217
1218if (config_lines)
1219 save_config_line(s);
1220
059ec3d9
PH
1221if (strncmpic(s, US"begin ", 6) == 0)
1222 {
1223 s += 6;
1224 while (isspace(*s)) s++;
1225 if (big_buffer + len - s > sizeof(next_section) - 2)
1226 s[sizeof(next_section) - 2] = 0;
1227 Ustrcpy(next_section, s);
1228 return NULL;
1229 }
1230
1231/* Return the first non-blank character. */
1232
1233return s;
1234}
1235
1236
1237
1238/*************************************************
1239* Read a name *
1240*************************************************/
1241
1242/* The yield is the pointer to the next uschar. Names longer than the
1243output space are silently truncated. This function is also used from acl.c when
1244parsing ACLs.
1245
1246Arguments:
1247 name where to put the name
1248 len length of name
1249 s input pointer
1250
1251Returns: new input pointer
1252*/
1253
1254uschar *
1255readconf_readname(uschar *name, int len, uschar *s)
1256{
1257int p = 0;
1258while (isspace(*s)) s++;
1259if (isalpha(*s))
1260 {
1261 while (isalnum(*s) || *s == '_')
1262 {
1263 if (p < len-1) name[p++] = *s;
1264 s++;
1265 }
1266 }
1267name[p] = 0;
1268while (isspace(*s)) s++;
1269return s;
1270}
1271
1272
1273
1274
1275/*************************************************
1276* Read a time value *
1277*************************************************/
1278
1279/* This function is also called from outside, to read argument
1280time values. The format of a time value is:
1281
1282 [<n>w][<n>d][<n>h][<n>m][<n>s]
1283
1284as long as at least one is present. If a format error is encountered,
1285return a negative value. The value must be terminated by the given
1286terminator.
1287
1288Arguments:
1289 s input pointer
1290 terminator required terminating character
1291 return_msec if TRUE, allow fractional seconds and return milliseconds
1292
1293Returns: the time value, or -1 on syntax error
1294 value is seconds if return_msec is FALSE
1295 value is milliseconds if return_msec is TRUE
1296*/
1297
1298int
1ad6489e 1299readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
059ec3d9
PH
1300{
1301int yield = 0;
1302for (;;)
1303 {
1304 int value, count;
1305 double fraction;
1306
1307 if (!isdigit(*s)) return -1;
1ad6489e 1308 (void)sscanf(CCS s, "%d%n", &value, &count);
059ec3d9
PH
1309 s += count;
1310
1311 switch (*s)
1312 {
1313 case 'w': value *= 7;
1314 case 'd': value *= 24;
1315 case 'h': value *= 60;
1316 case 'm': value *= 60;
1317 case 's': s++;
1318 break;
1319
1320 case '.':
1321 if (!return_msec) return -1;
1ad6489e 1322 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
059ec3d9
PH
1323 s += count;
1324 if (*s++ != 's') return -1;
1325 yield += (int)(fraction * 1000.0);
1326 break;
1327
1328 default: return -1;
1329 }
1330
1331 if (return_msec) value *= 1000;
1332 yield += value;
1333 if (*s == terminator) return yield;
1334 }
1335/* Control never reaches here. */
1336}
1337
1338
1339
1340/*************************************************
1341* Read a fixed point value *
1342*************************************************/
1343
1344/* The value is returned *1000
1345
1346Arguments:
1347 s input pointer
1348 terminator required terminator
1349
1350Returns: the value, or -1 on error
1351*/
1352
1353static int
55414b25 1354readconf_readfixed(const uschar *s, int terminator)
059ec3d9
PH
1355{
1356int yield = 0;
1357int value, count;
1358if (!isdigit(*s)) return -1;
1359(void)sscanf(CS s, "%d%n", &value, &count);
1360s += count;
1361yield = value * 1000;
1362if (*s == '.')
1363 {
1364 int m = 100;
1365 while (isdigit((*(++s))))
1366 {
1367 yield += (*s - '0') * m;
1368 m /= 10;
1369 }
1370 }
1371
1372return (*s == terminator)? yield : (-1);
1373}
1374
1375
1376
1377/*************************************************
1378* Find option in list *
1379*************************************************/
1380
1381/* The lists are always in order, so binary chop can be used.
1382
1383Arguments:
1384 name the option name to search for
1385 ol the first entry in the option list
1386 last one more than the offset of the last entry in the option list
1387
1388Returns: pointer to an option entry, or NULL if not found
1389*/
1390
1391static optionlist *
1392find_option(uschar *name, optionlist *ol, int last)
1393{
1394int first = 0;
1395while (last > first)
1396 {
1397 int middle = (first + last)/2;
1398 int c = Ustrcmp(name, ol[middle].name);
d7bed771 1399
059ec3d9 1400 if (c == 0) return ol + middle;
d7bed771
JH
1401 else if (c > 0) first = middle + 1;
1402 else last = middle;
059ec3d9
PH
1403 }
1404return NULL;
1405}
1406
1407
1408
1409/*************************************************
1410* Find a set flag in option list *
1411*************************************************/
1412
1413/* Because some versions of Unix make no restrictions on the values of uids and
1414gids (even negative ones), we cannot represent "unset" by a special value.
1415There is therefore a separate boolean variable for each one indicating whether
1416a value is set or not. This function returns a pointer to the boolean, given
1417the original option name. It is a major disaster if the flag cannot be found.
1418
1419Arguments:
1420 name the name of the uid or gid option
1421 oltop points to the start of the relevant option list
1422 last one more than the offset of the last item in the option list
1423 data_block NULL when reading main options => data values in the option
1424 list are absolute addresses; otherwise they are byte offsets
1425 in data_block (used for driver options)
1426
1427Returns: a pointer to the boolean flag.
1428*/
1429
1430static BOOL *
1431get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1432{
1433optionlist *ol;
1434uschar name2[64];
1435sprintf(CS name2, "*set_%.50s", name);
1436ol = find_option(name2, oltop, last);
1437if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1438 "Exim internal error: missing set flag for %s", name);
1439return (data_block == NULL)? (BOOL *)(ol->value) :
1440 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1441}
1442
1443
1444
1445
1446/*************************************************
1447* Output extra characters message and die *
1448*************************************************/
1449
1450/* Called when an option line has junk on the end. Sometimes this is because
1451the sysadmin thinks comments are permitted.
1452
1453Arguments:
1454 s points to the extra characters
1455 t1..t3 strings to insert in the log message
1456
1457Returns: doesn't return; dies
1458*/
1459
1460static void
55414b25 1461extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
059ec3d9
PH
1462{
1463uschar *comment = US"";
1464if (*s == '#') comment = US" (# is comment only at line start)";
1465log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1466 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1467}
1468
1469
1470
1471/*************************************************
1472* Read rewrite information *
1473*************************************************/
1474
1475/* Each line of rewrite information contains:
1476
1477. A complete address in the form user@domain, possibly with
1478 leading * for each part; or alternatively, a regex.
1479
1480. A replacement string (which will be expanded).
1481
1482. An optional sequence of one-letter flags, indicating which
1483 headers etc. to apply this rule to.
1484
1485All this is decoded and placed into a control block. The OR of the flags is
1486maintained in a common word.
1487
1488Arguments:
1489 p points to the string that makes up the rule
1490 existflags points to the overall flag word
1491 isglobal TRUE if reading global rewrite rules
1492
1493Returns: the control block for the parsed rule.
1494*/
1495
1496static rewrite_rule *
55414b25 1497readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
059ec3d9
PH
1498{
1499rewrite_rule *next = store_get(sizeof(rewrite_rule));
1500
1501next->next = NULL;
1502next->key = string_dequote(&p);
1503
1504while (isspace(*p)) p++;
1505if (*p == 0)
1506 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1507 "missing rewrite replacement string");
1508
1509next->flags = 0;
1510next->replacement = string_dequote(&p);
1511
1512while (*p != 0) switch (*p++)
1513 {
1514 case ' ': case '\t': break;
1515
1516 case 'q': next->flags |= rewrite_quit; break;
1517 case 'w': next->flags |= rewrite_whole; break;
1518
1519 case 'h': next->flags |= rewrite_all_headers; break;
1520 case 's': next->flags |= rewrite_sender; break;
1521 case 'f': next->flags |= rewrite_from; break;
1522 case 't': next->flags |= rewrite_to; break;
1523 case 'c': next->flags |= rewrite_cc; break;
1524 case 'b': next->flags |= rewrite_bcc; break;
1525 case 'r': next->flags |= rewrite_replyto; break;
1526
1527 case 'E': next->flags |= rewrite_all_envelope; break;
1528 case 'F': next->flags |= rewrite_envfrom; break;
1529 case 'T': next->flags |= rewrite_envto; break;
1530
1531 case 'Q': next->flags |= rewrite_qualify; break;
1532 case 'R': next->flags |= rewrite_repeat; break;
1533
1534 case 'S':
1535 next->flags |= rewrite_smtp;
1536 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1537 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1538 "rewrite rule has the S flag but is not a regular expression");
1539 break;
1540
1541 default:
1542 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1543 "unknown rewrite flag character '%c' "
1544 "(could be missing quotes round replacement item)", p[-1]);
1545 break;
1546 }
1547
1548/* If no action flags are set, set all the "normal" rewrites. */
1549
1550if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1551 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1552
1553/* Remember which exist, for optimization, and return the rule */
1554
1555*existflags |= next->flags;
1556return next;
1557}
1558
1559
1560
1561
1562/*************************************************
1563* Read global rewrite information *
1564*************************************************/
1565
1566/* Each line is a single rewrite rule; it is parsed into a control block
1567by readconf_one_rewrite(), and its flags are ORed into the global flag
1568word rewrite_existflags. */
1569
1570void
1571readconf_rewrites(void)
1572{
1573rewrite_rule **chain = &global_rewrite_rules;
1574uschar *p;
1575
1576while ((p = get_config_line()) != NULL)
1577 {
1578 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1579 *chain = next;
1580 chain = &(next->next);
1581 }
1582}
1583
1584
1585
1586/*************************************************
1587* Read a string *
1588*************************************************/
1589
1590/* Strings are read into the normal store pool. As long we aren't too
1591near the end of the current block, the string will just use what is necessary
1592on the top of the stacking pool, because string_cat() uses the extension
1593mechanism.
1594
1595Argument:
1596 s the rest of the input line
1597 name the option name (for errors)
1598
1599Returns: pointer to the string
1600*/
1601
1602static uschar *
55414b25 1603read_string(const uschar *s, const uschar *name)
059ec3d9
PH
1604{
1605uschar *yield;
55414b25 1606const uschar *ss;
059ec3d9
PH
1607
1608if (*s != '\"') return string_copy(s);
1609
1610ss = s;
1611yield = string_dequote(&s);
1612
1613if (s == ss+1 || s[-1] != '\"')
1614 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1615 "missing quote at end of string value for %s", name);
1616
1617if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1618
1619return yield;
1620}
1621
1622
1ad6489e
JH
1623/*************************************************
1624* Custom-handler options *
1625*************************************************/
1626static void
1627fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1628{
1ad6489e
JH
1629if (*str == '$')
1630 smtp_receive_timeout_s = string_copy(str);
1631else
1632 {
1633 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1634 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1635 if (smtp_receive_timeout < 0)
1636 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1637 name);
1638 }
1639}
1640
059ec3d9
PH
1641/*************************************************
1642* Handle option line *
1643*************************************************/
1644
1645/* This function is called from several places to process a line containing the
1646setting of an option. The first argument is the line to be decoded; it has been
1647checked not to be empty and not to start with '#'. Trailing newlines and white
1648space have been removed. The second argument is a pointer to the list of
1649variable names that are to be recognized, together with their types and
1650locations, and the third argument gives the number of entries in the list.
1651
1652The fourth argument is a pointer to a data block. If it is NULL, then the data
1653values in the options list are absolute addresses. Otherwise, they are byte
1654offsets in the data block.
1655
1656String option data may continue onto several lines; this function reads further
1657data from config_file if necessary.
1658
1659The yield of this function is normally zero. If a string continues onto
1660multiple lines, then the data value is permitted to be followed by a comma
1661or a semicolon (for use in drivers) and the yield is that character.
1662
1663Arguments:
1664 buffer contains the configuration line to be handled
1665 oltop points to the start of the relevant option list
1666 last one more than the offset of the last item in the option list
1667 data_block NULL when reading main options => data values in the option
1668 list are absolute addresses; otherwise they are byte offsets
1669 in data_block when they have opt_public set; otherwise
1670 they are byte offsets in data_block->options_block.
1671 unknown_txt format string to use in panic message for unknown option;
1672 must contain %s for option name
1673 if given as NULL, don't panic on unknown option
1674
1675Returns: TRUE if an option was read successfully,
1676 FALSE false for an unknown option if unknown_txt == NULL,
1677 otherwise panic and die on an unknown option
1678*/
1679
1680static BOOL
1681readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1682 void *data_block, uschar *unknown_txt)
1683{
1684int ptr = 0;
1685int offset = 0;
1686int n, count, type, value;
1687int issecure = 0;
1688uid_t uid;
1689gid_t gid;
1690BOOL boolvalue = TRUE;
1691BOOL freesptr = TRUE;
1692optionlist *ol, *ol2;
1693struct passwd *pw;
1694void *reset_point;
1695int intbase = 0;
1696uschar *inttype = US"";
1697uschar *sptr;
1698uschar *s = buffer;
532be449 1699uschar **str_target;
059ec3d9
PH
1700uschar name[64];
1701uschar name2[64];
1702
1703/* There may be leading spaces; thereafter, we expect an option name starting
1704with a letter. */
1705
1706while (isspace(*s)) s++;
1707if (!isalpha(*s))
1708 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1709
1710/* Read the name of the option, and skip any subsequent white space. If
1711it turns out that what we read was "hide", set the flag indicating that
1712this is a secure option, and loop to read the next word. */
1713
1714for (n = 0; n < 2; n++)
1715 {
1716 while (isalnum(*s) || *s == '_')
1717 {
1718 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1719 s++;
1720 }
1721 name[ptr] = 0;
1722 while (isspace(*s)) s++;
1723 if (Ustrcmp(name, "hide") != 0) break;
1724 issecure = opt_secure;
1725 ptr = 0;
1726 }
1727
1728/* Deal with "no_" or "not_" here for booleans */
1729
1730if (Ustrncmp(name, "no_", 3) == 0)
1731 {
1732 boolvalue = FALSE;
1733 offset = 3;
1734 }
1735
1736if (Ustrncmp(name, "not_", 4) == 0)
1737 {
1738 boolvalue = FALSE;
1739 offset = 4;
1740 }
1741
1742/* Search the list for the given name. A non-existent name, or an option that
1743is set twice, is a disaster. */
1744
d7bed771 1745if (!(ol = find_option(name + offset, oltop, last)))
059ec3d9
PH
1746 {
1747 if (unknown_txt == NULL) return FALSE;
1748 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1749 }
1750
846726c5
JH
1751if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1752 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1753 "\"%s\" option set for the second time", name);
059ec3d9
PH
1754
1755ol->type |= opt_set | issecure;
1756type = ol->type & opt_mask;
1757
1758/* Types with data values must be followed by '='; the "no[t]_" prefix
1759applies only to boolean values. */
1760
1761if (type < opt_bool || type > opt_bool_last)
1762 {
1763 if (offset != 0)
1764 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1765 "negation prefix applied to a non-boolean option");
1766 if (*s == 0)
1767 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1768 "unexpected end of line (data missing) after %s", name);
1769 if (*s != '=')
1770 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1771 }
1772
1773/* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
9c695f6d 1774true/false/yes/no, or, in the case of opt_expand_bool, a general string that
059ec3d9
PH
1775ultimately expands to one of those values. */
1776
1777else if (*s != 0 && (offset != 0 || *s != '='))
1778 extra_chars_error(s, US"boolean option ", name, US"");
1779
1780/* Skip white space after = */
1781
1782if (*s == '=') while (isspace((*(++s))));
1783
1784/* If there is a data block and the opt_public flag is not set, change
1785the data block pointer to the private options block. */
1786
1787if (data_block != NULL && (ol->type & opt_public) == 0)
1788 data_block = (void *)(((driver_instance *)data_block)->options_block);
1789
1790/* Now get the data according to the type. */
1791
1792switch (type)
1793 {
1794 /* If a string value is not enclosed in quotes, it consists of
1795 the rest of the current line, verbatim. Otherwise, string escapes
1796 are processed.
1797
1798 A transport is specified as a string, which is then looked up in the
1799 list of transports. A search type is specified as one of a number of
1800 known strings.
1801
1802 A set or rewrite rules for a driver is specified as a string, which is
1803 then parsed into a suitable chain of control blocks.
1804
1805 Uids and gids are specified as strings which are then looked up in the
1806 passwd file. Lists of uids and gids are similarly specified as colon-
1807 separated strings. */
1808
1809 case opt_stringptr:
1810 case opt_uid:
1811 case opt_gid:
1812 case opt_expand_uid:
1813 case opt_expand_gid:
1814 case opt_uidlist:
1815 case opt_gidlist:
1816 case opt_rewrite:
1817
1818 reset_point = sptr = read_string(s, name);
1819
1820 /* Having read a string, we now have several different ways of using it,
1821 depending on the data type, so do another switch. If keeping the actual
1822 string is not required (because it is interpreted), freesptr is set TRUE,
1823 and at the end we reset the pool. */
1824
1825 switch (type)
1826 {
1827 /* If this was a string, set the variable to point to the new string,
1828 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1829 rules, we still keep the string (for printing), and parse the rules into a
1830 control block and flags word. */
1831
1832 case opt_stringptr:
adaa0e2c
JH
1833 str_target = data_block ? USS (US data_block + (long int)(ol->value))
1834 : USS (ol->value);
846726c5 1835 if (ol->type & opt_rep_con)
532be449 1836 {
adaa0e2c 1837 uschar * saved_condition;
6a8de854
PP
1838 /* We already have a condition, we're conducting a crude hack to let
1839 multiple condition rules be chained together, despite storing them in
1840 text form. */
adaa0e2c
JH
1841 *str_target = string_copy_malloc( (saved_condition = *str_target)
1842 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1843 saved_condition, sptr)
1844 : sptr);
846726c5
JH
1845 /* TODO(pdp): there is a memory leak here and just below
1846 when we set 3 or more conditions; I still don't
1847 understand the store mechanism enough to know
1848 what's the safe way to free content from an earlier store.
6a8de854
PP
1849 AFAICT, stores stack, so freeing an early stored item also stores
1850 all data alloc'd after it. If we knew conditions were adjacent,
1851 we could survive that, but we don't. So I *think* we need to take
1852 another bit from opt_type to indicate "malloced"; this seems like
1853 quite a hack, especially for this one case. It also means that
1854 we can't ever reclaim the store from the *first* condition.
1855
1856 Because we only do this once, near process start-up, I'm prepared to
1857 let this slide for the time being, even though it rankles. */
532be449 1858 }
76146973
JH
1859 else if (ol->type & opt_rep_str)
1860 {
2ad78978
JH
1861 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1862 int sep_i = -(int)sep_o;
55414b25 1863 const uschar * list = sptr;
2ad78978
JH
1864 uschar * s;
1865 uschar * list_o = *str_target;
1866
1867 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1868 list_o = string_append_listele(list_o, sep_o, s);
1869 if (list_o)
1870 *str_target = string_copy_malloc(list_o);
76146973 1871 }
532be449
PP
1872 else
1873 {
1874 *str_target = sptr;
1875 freesptr = FALSE;
1876 }
1877 break;
1878
059ec3d9 1879 case opt_rewrite:
adaa0e2c
JH
1880 if (data_block)
1881 *USS (US data_block + (long int)(ol->value)) = sptr;
059ec3d9 1882 else
adaa0e2c 1883 *USS (ol->value) = sptr;
059ec3d9
PH
1884 freesptr = FALSE;
1885 if (type == opt_rewrite)
1886 {
1887 int sep = 0;
1888 int *flagptr;
1889 uschar *p = sptr;
1890 rewrite_rule **chain;
1891 optionlist *ol3;
1892
1893 sprintf(CS name2, "*%.50s_rules", name);
1894 ol2 = find_option(name2, oltop, last);
1895 sprintf(CS name2, "*%.50s_flags", name);
1896 ol3 = find_option(name2, oltop, last);
1897
1898 if (ol2 == NULL || ol3 == NULL)
1899 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1900 "rewrite rules not available for driver");
1901
1902 if (data_block == NULL)
1903 {
1904 chain = (rewrite_rule **)(ol2->value);
1905 flagptr = (int *)(ol3->value);
1906 }
1907 else
1908 {
1909 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1910 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1911 }
1912
55414b25 1913 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
059ec3d9
PH
1914 {
1915 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1916 *chain = next;
1917 chain = &(next->next);
1918 }
1919
1920 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1921 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1922 "non-header rewrite - not allowed at transport time -");
1923 }
1924 break;
1925
1926 /* If it was an expanded uid, see if there is any expansion to be
1927 done by checking for the presence of a $ character. If there is, save it
1928 in the corresponding *expand_user option field. Otherwise, fall through
1929 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1930 of data. */
1931
1932 case opt_expand_uid:
1933 sprintf(CS name2, "*expand_%.50s", name);
1934 ol2 = find_option(name2, oltop, last);
1935 if (ol2 != NULL)
1936 {
1937 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1938
1939 if (data_block == NULL)
1940 *((uschar **)(ol2->value)) = ss;
1941 else
1942 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1943
1944 if (ss != NULL)
1945 {
1946 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1947 freesptr = FALSE;
1948 break;
1949 }
1950 }
1951
1952 /* Look up a fixed uid, and also make use of the corresponding gid
1953 if a passwd entry is returned and the gid has not been set. */
1954
1955 case opt_uid:
1956 if (!route_finduser(sptr, &pw, &uid))
1957 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1958 if (data_block == NULL)
1959 *((uid_t *)(ol->value)) = uid;
1960 else
1961 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1962
1963 /* Set the flag indicating a fixed value is set */
1964
1965 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1966
1967 /* Handle matching gid if we have a passwd entry: done by finding the
1968 same name with terminating "user" changed to "group"; if not found,
1969 ignore. Also ignore if the value is already set. */
1970
1971 if (pw == NULL) break;
1972 Ustrcpy(name+Ustrlen(name)-4, "group");
1973 ol2 = find_option(name, oltop, last);
1974 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1975 (ol2->type & opt_mask) == opt_expand_gid))
1976 {
1977 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1978 if (! *set_flag)
1979 {
1980 if (data_block == NULL)
1981 *((gid_t *)(ol2->value)) = pw->pw_gid;
1982 else
1983 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1984 *set_flag = TRUE;
1985 }
1986 }
1987 break;
1988
1989 /* If it was an expanded gid, see if there is any expansion to be
1990 done by checking for the presence of a $ character. If there is, save it
1991 in the corresponding *expand_user option field. Otherwise, fall through
1992 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1993 of data. */
1994
1995 case opt_expand_gid:
1996 sprintf(CS name2, "*expand_%.50s", name);
1997 ol2 = find_option(name2, oltop, last);
1998 if (ol2 != NULL)
1999 {
2000 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
2001
2002 if (data_block == NULL)
2003 *((uschar **)(ol2->value)) = ss;
2004 else
2005 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
2006
2007 if (ss != NULL)
2008 {
2009 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
2010 freesptr = FALSE;
2011 break;
2012 }
2013 }
2014
2015 /* Handle freestanding gid */
2016
2017 case opt_gid:
2018 if (!route_findgroup(sptr, &gid))
2019 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
2020 if (data_block == NULL)
2021 *((gid_t *)(ol->value)) = gid;
2022 else
2023 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
2024 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
2025 break;
2026
2027 /* If it was a uid list, look up each individual entry, and build
2028 a vector of uids, with a count in the first element. Put the vector
2029 in malloc store so we can free the string. (We are reading into
2030 permanent store already.) */
2031
2032 case opt_uidlist:
2033 {
2034 int count = 1;
2035 uid_t *list;
2036 int ptr = 0;
55414b25
JH
2037 const uschar *p;
2038 const uschar *op = expand_string (sptr);
0925ede6
PH
2039
2040 if (op == NULL)
2041 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2042 name, expand_string_message);
059ec3d9 2043
0925ede6 2044 p = op;
059ec3d9 2045 if (*p != 0) count++;
0925ede6 2046 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
2047 list = store_malloc(count*sizeof(uid_t));
2048 list[ptr++] = (uid_t)(count - 1);
2049
2050 if (data_block == NULL)
2051 *((uid_t **)(ol->value)) = list;
2052 else
2053 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2054
0925ede6 2055 p = op;
059ec3d9
PH
2056 while (count-- > 1)
2057 {
2058 int sep = 0;
2059 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2060 if (!route_finduser(big_buffer, NULL, &uid))
2061 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
2062 big_buffer);
2063 list[ptr++] = uid;
2064 }
2065 }
2066 break;
2067
2068 /* If it was a gid list, look up each individual entry, and build
2069 a vector of gids, with a count in the first element. Put the vector
2070 in malloc store so we can free the string. (We are reading into permanent
2071 store already.) */
2072
2073 case opt_gidlist:
2074 {
2075 int count = 1;
2076 gid_t *list;
2077 int ptr = 0;
55414b25
JH
2078 const uschar *p;
2079 const uschar *op = expand_string (sptr);
0925ede6
PH
2080
2081 if (op == NULL)
2082 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2083 name, expand_string_message);
059ec3d9 2084
0925ede6 2085 p = op;
059ec3d9 2086 if (*p != 0) count++;
0925ede6 2087 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
2088 list = store_malloc(count*sizeof(gid_t));
2089 list[ptr++] = (gid_t)(count - 1);
2090
2091 if (data_block == NULL)
2092 *((gid_t **)(ol->value)) = list;
2093 else
2094 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2095
0925ede6 2096 p = op;
059ec3d9
PH
2097 while (count-- > 1)
2098 {
2099 int sep = 0;
2100 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2101 if (!route_findgroup(big_buffer, &gid))
2102 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
2103 big_buffer);
2104 list[ptr++] = gid;
2105 }
2106 }
2107 break;
2108 }
2109
2110 /* Release store if the value of the string doesn't need to be kept. */
2111
2112 if (freesptr) store_reset(reset_point);
2113 break;
2114
2115 /* Expanded boolean: if no characters follow, or if there are no dollar
2116 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
2117 save the string for later expansion in the alternate place. */
2118
2119 case opt_expand_bool:
2120 if (*s != 0 && Ustrchr(s, '$') != 0)
2121 {
2122 sprintf(CS name2, "*expand_%.50s", name);
2123 ol2 = find_option(name2, oltop, last);
2124 if (ol2 != NULL)
2125 {
2126 reset_point = sptr = read_string(s, name);
2127 if (data_block == NULL)
2128 *((uschar **)(ol2->value)) = sptr;
2129 else
2130 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
2131 freesptr = FALSE;
2132 break;
2133 }
2134 }
2135 /* Fall through */
2136
2137 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
2138 look for yes/not/true/false. Some booleans are stored in a single bit in
2139 a single int. There's a special fudge for verify settings; without a suffix
2140 they set both xx_sender and xx_recipient. The table points to the sender
2141 value; search subsequently for the recipient. There's another special case:
2142 opt_bool_set also notes when a boolean has been set. */
2143
2144 case opt_bool:
2145 case opt_bit:
2146 case opt_bool_verify:
2147 case opt_bool_set:
2148 if (*s != 0)
2149 {
2150 s = readconf_readname(name2, 64, s);
2151 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
2152 boolvalue = TRUE;
2153 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
2154 boolvalue = FALSE;
2155 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2156 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
2157 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
2158 US"for boolean option ", name);
2159 }
2160
2161 /* Handle single-bit type. */
2162
2163 if (type == opt_bit)
2164 {
2165 int bit = 1 << ((ol->type >> 16) & 31);
2166 int *ptr = (data_block == NULL)?
2167 (int *)(ol->value) :
2168 (int *)((uschar *)data_block + (long int)ol->value);
2169 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
2170 break;
2171 }
2172
2173 /* Handle full BOOL types */
2174
2175 if (data_block == NULL)
2176 *((BOOL *)(ol->value)) = boolvalue;
2177 else
2178 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
2179
2180 /* Verify fudge */
2181
2182 if (type == opt_bool_verify)
2183 {
2184 sprintf(CS name2, "%.50s_recipient", name + offset);
2185 ol2 = find_option(name2, oltop, last);
2186 if (ol2 != NULL)
2187 {
2188 if (data_block == NULL)
2189 *((BOOL *)(ol2->value)) = boolvalue;
2190 else
2191 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
2192 }
2193 }
2194
2195 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2196
2197 else if (type == opt_bool_set)
2198 {
2199 sprintf(CS name2, "*set_%.50s", name + offset);
2200 ol2 = find_option(name2, oltop, last);
2201 if (ol2 != NULL)
2202 {
2203 if (data_block == NULL)
2204 *((BOOL *)(ol2->value)) = TRUE;
2205 else
2206 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
2207 }
2208 }
2209 break;
2210
2211 /* Octal integer */
2212
2213 case opt_octint:
2214 intbase = 8;
2215 inttype = US"octal ";
2216
2217 /* Integer: a simple(ish) case; allow octal and hex formats, and
dcb72db9 2218 suffixes K, M and G. The different types affect output, not input. */
059ec3d9
PH
2219
2220 case opt_mkint:
2221 case opt_int:
2222 {
2223 uschar *endptr;
7e8d92ba
PH
2224 long int lvalue;
2225
059ec3d9 2226 errno = 0;
7e8d92ba 2227 lvalue = strtol(CS s, CSS &endptr, intbase);
059ec3d9
PH
2228
2229 if (endptr == s)
2230 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2231 inttype, name);
2232
2233 if (errno != ERANGE)
059ec3d9
PH
2234 if (tolower(*endptr) == 'k')
2235 {
7e8d92ba
PH
2236 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
2237 else lvalue *= 1024;
059ec3d9
PH
2238 endptr++;
2239 }
2240 else if (tolower(*endptr) == 'm')
2241 {
7e8d92ba 2242 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
059ec3d9 2243 errno = ERANGE;
7e8d92ba 2244 else lvalue *= 1024*1024;
059ec3d9
PH
2245 endptr++;
2246 }
dcb72db9
JH
2247 else if (tolower(*endptr) == 'g')
2248 {
2249 if (lvalue > INT_MAX/(1024*1024*1024) || lvalue < INT_MIN/(1024*1024*1024))
2250 errno = ERANGE;
2251 else lvalue *= 1024*1024*1024;
2252 endptr++;
2253 }
059ec3d9 2254
7e8d92ba
PH
2255 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2256 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2257 "absolute value of integer \"%s\" is too large (overflow)", s);
059ec3d9
PH
2258
2259 while (isspace(*endptr)) endptr++;
2260 if (*endptr != 0)
2261 extra_chars_error(endptr, inttype, US"integer value for ", name);
7e8d92ba
PH
2262
2263 value = (int)lvalue;
059ec3d9
PH
2264 }
2265
2266 if (data_block == NULL)
2267 *((int *)(ol->value)) = value;
2268 else
2269 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2270 break;
2271
dcb72db9
JH
2272 /* Integer held in K: again, allow octal and hex formats, and suffixes K, M
2273 and G. */
13559da6 2274 /*XXX consider moving to int_eximarith_t (but mind the overflow test 0415) */
059ec3d9
PH
2275
2276 case opt_Kint:
2277 {
2278 uschar *endptr;
2279 errno = 0;
2280 value = strtol(CS s, CSS &endptr, intbase);
2281
2282 if (endptr == s)
2283 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2284 inttype, name);
2285
2286 if (errno != ERANGE)
dcb72db9 2287 if (tolower(*endptr) == 'g')
059ec3d9 2288 {
dcb72db9
JH
2289 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
2290 errno = ERANGE;
2291 else
2292 value *= 1024*1024;
059ec3d9
PH
2293 endptr++;
2294 }
dcb72db9 2295 else if (tolower(*endptr) == 'm')
059ec3d9 2296 {
dcb72db9
JH
2297 if (value > INT_MAX/1024 || value < INT_MIN/1024)
2298 errno = ERANGE;
2299 else
2300 value *= 1024;
059ec3d9
PH
2301 endptr++;
2302 }
dcb72db9
JH
2303 else if (tolower(*endptr) == 'k')
2304 endptr++;
059ec3d9 2305 else
059ec3d9 2306 value = (value + 512)/1024;
059ec3d9
PH
2307
2308 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2309 "absolute value of integer \"%s\" is too large (overflow)", s);
2310
2311 while (isspace(*endptr)) endptr++;
2312 if (*endptr != 0)
2313 extra_chars_error(endptr, inttype, US"integer value for ", name);
2314 }
2315
2316 if (data_block == NULL)
2317 *((int *)(ol->value)) = value;
2318 else
2319 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2320 break;
2321
2322 /* Fixed-point number: held to 3 decimal places. */
2323
2324 case opt_fixed:
2325 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2326 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2327 "fixed-point number expected for %s", name);
2328
2329 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2330 "integer \"%s\" is too large (overflow)", s);
2331
2332 value *= 1000;
2333
2334 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2335 "integer \"%s\" is too large (overflow)", s);
2336
2337 if (s[count] == '.')
2338 {
2339 int d = 100;
2340 while (isdigit(s[++count]))
2341 {
2342 value += (s[count] - '0') * d;
2343 d /= 10;
2344 }
2345 }
2346
2347 while (isspace(s[count])) count++;
2348
2349 if (s[count] != 0)
2350 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2351
2352 if (data_block == NULL)
2353 *((int *)(ol->value)) = value;
2354 else
2355 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2356 break;
2357
2358 /* There's a special routine to read time values. */
2359
2360 case opt_time:
2361 value = readconf_readtime(s, 0, FALSE);
2362 if (value < 0)
2363 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2364 name);
2365 if (data_block == NULL)
2366 *((int *)(ol->value)) = value;
2367 else
2368 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2369 break;
2370
2371 /* A time list is a list of colon-separated times, with the first
2372 element holding the size of the list and the second the number of
2373 entries used. */
2374
2375 case opt_timelist:
2376 {
2377 int count = 0;
2378 int *list = (data_block == NULL)?
2379 (int *)(ol->value) :
2380 (int *)((uschar *)data_block + (long int)(ol->value));
2381
2382 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2383 {
2384 int terminator = 0;
2385 uschar *snext = Ustrchr(s, ':');
2386 if (snext != NULL)
2387 {
2388 uschar *ss = snext;
2389 while (ss > s && isspace(ss[-1])) ss--;
2390 terminator = *ss;
2391 }
2392 value = readconf_readtime(s, terminator, FALSE);
2393 if (value < 0)
2394 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2395 name);
2396 if (count > 1 && value <= list[count])
2397 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2398 "time value out of order for %s", name);
2399 list[count+1] = value;
2400 if (snext == NULL) break;
2401 s = snext + 1;
2402 while (isspace(*s)) s++;
2403 }
2404
2405 if (count > list[0] - 2)
2406 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2407 name);
2408 if (count > 0 && list[2] == 0) count = 0;
2409 list[1] = count;
1ad6489e 2410 break;
059ec3d9
PH
2411 }
2412
1ad6489e
JH
2413 case opt_func:
2414 {
2415 void (*fn)() = ol->value;
2416 fn(name, s);
2417 break;
2418 }
059ec3d9
PH
2419 }
2420
2421return TRUE;
2422}
2423
2424
2425
2426/*************************************************
2427* Print a time value *
2428*************************************************/
2429
2430/*
2431Argument: a time value in seconds
2432Returns: pointer to a fixed buffer containing the time as a string,
2433 in readconf_readtime() format
2434*/
2435
2436uschar *
2437readconf_printtime(int t)
2438{
2439int s, m, h, d, w;
2440uschar *p = time_buffer;
2441
ea49d0e1
PH
2442if (t < 0)
2443 {
2444 *p++ = '-';
2445 t = -t;
2446 }
2447
059ec3d9
PH
2448s = t % 60;
2449t /= 60;
2450m = t % 60;
2451t /= 60;
2452h = t % 24;
2453t /= 24;
2454d = t % 7;
2455w = t/7;
2456
2457if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2458if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2459if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2460if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2461if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2462
2463return time_buffer;
2464}
2465
2466
2467
2468/*************************************************
2469* Print an individual option value *
2470*************************************************/
2471
2472/* This is used by the -bP option, so prints to the standard output.
2473The entire options list is passed in as an argument, because some options come
2474in pairs - typically uid/gid settings, which can either be explicit numerical
2475values, or strings to be expanded later. If the numerical value is unset,
2476search for "*expand_<name>" to see if there is a string equivalent.
2477
2478Arguments:
2479 ol option entry, or NULL for an unknown option
2480 name option name
2481 options_block NULL for main configuration options; otherwise points to
2482 a driver block; if the option doesn't have opt_public
2483 set, then options_block->options_block is where the item
2484 resides.
2485 oltop points to the option list in which ol exists
2486 last one more than the offset of the last entry in optop
12f69989 2487 no_labels do not show "foo = " at the start.
059ec3d9
PH
2488
2489Returns: nothing
2490*/
2491
2492static void
2493print_ol(optionlist *ol, uschar *name, void *options_block,
12f69989 2494 optionlist *oltop, int last, BOOL no_labels)
059ec3d9
PH
2495{
2496struct passwd *pw;
2497struct group *gr;
2498optionlist *ol2;
2499void *value;
2500uid_t *uidlist;
2501gid_t *gidlist;
2502uschar *s;
2503uschar name2[64];
2504
2505if (ol == NULL)
2506 {
2507 printf("%s is not a known option\n", name);
2508 return;
2509 }
2510
2511/* Non-admin callers cannot see options that have been flagged secure by the
2512"hide" prefix. */
2513
2514if (!admin_user && (ol->type & opt_secure) != 0)
2515 {
12f69989
PP
2516 if (no_labels)
2517 printf("%s\n", hidden);
2518 else
2519 printf("%s = %s\n", name, hidden);
059ec3d9
PH
2520 return;
2521 }
2522
2523/* Else show the value of the option */
2524
2525value = ol->value;
2526if (options_block != NULL)
2527 {
2528 if ((ol->type & opt_public) == 0)
2529 options_block = (void *)(((driver_instance *)options_block)->options_block);
2530 value = (void *)((uschar *)options_block + (long int)value);
2531 }
2532
2533switch(ol->type & opt_mask)
2534 {
2535 case opt_stringptr:
2536 case opt_rewrite: /* Show the text value */
2537 s = *((uschar **)value);
12f69989
PP
2538 if (!no_labels) printf("%s = ", name);
2539 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
059ec3d9
PH
2540 break;
2541
2542 case opt_int:
12f69989
PP
2543 if (!no_labels) printf("%s = ", name);
2544 printf("%d\n", *((int *)value));
059ec3d9
PH
2545 break;
2546
2547 case opt_mkint:
2548 {
2549 int x = *((int *)value);
2550 if (x != 0 && (x & 1023) == 0)
2551 {
2552 int c = 'K';
2553 x >>= 10;
2554 if ((x & 1023) == 0)
2555 {
2556 c = 'M';
2557 x >>= 10;
2558 }
12f69989
PP
2559 if (!no_labels) printf("%s = ", name);
2560 printf("%d%c\n", x, c);
2561 }
2562 else
2563 {
2564 if (!no_labels) printf("%s = ", name);
2565 printf("%d\n", x);
059ec3d9 2566 }
059ec3d9
PH
2567 }
2568 break;
2569
2570 case opt_Kint:
2571 {
2572 int x = *((int *)value);
12f69989
PP
2573 if (!no_labels) printf("%s = ", name);
2574 if (x == 0) printf("0\n");
2575 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2576 else printf("%dK\n", x);
059ec3d9
PH
2577 }
2578 break;
2579
2580 case opt_octint:
12f69989
PP
2581 if (!no_labels) printf("%s = ", name);
2582 printf("%#o\n", *((int *)value));
059ec3d9
PH
2583 break;
2584
2585 /* Can be negative only when "unset", in which case integer */
2586
2587 case opt_fixed:
2588 {
2589 int x = *((int *)value);
2590 int f = x % 1000;
2591 int d = 100;
2592 if (x < 0) printf("%s =\n", name); else
2593 {
12f69989
PP
2594 if (!no_labels) printf("%s = ", name);
2595 printf("%d.", x/1000);
059ec3d9
PH
2596 do
2597 {
2598 printf("%d", f/d);
2599 f %= d;
2600 d /= 10;
2601 }
2602 while (f != 0);
2603 printf("\n");
2604 }
2605 }
2606 break;
2607
2608 /* If the numerical value is unset, try for the string value */
2609
2610 case opt_expand_uid:
2611 if (! *get_set_flag(name, oltop, last, options_block))
2612 {
2613 sprintf(CS name2, "*expand_%.50s", name);
2614 ol2 = find_option(name2, oltop, last);
2615 if (ol2 != NULL)
2616 {
2617 void *value2 = ol2->value;
2618 if (options_block != NULL)
2619 value2 = (void *)((uschar *)options_block + (long int)value2);
2620 s = *((uschar **)value2);
12f69989
PP
2621 if (!no_labels) printf("%s = ", name);
2622 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2623 break;
2624 }
2625 }
2626
2627 /* Else fall through */
2628
2629 case opt_uid:
12f69989 2630 if (!no_labels) printf("%s = ", name);
059ec3d9 2631 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2632 printf("\n");
059ec3d9
PH
2633 else
2634 {
2635 pw = getpwuid(*((uid_t *)value));
2636 if (pw == NULL)
12f69989
PP
2637 printf("%ld\n", (long int)(*((uid_t *)value)));
2638 else printf("%s\n", pw->pw_name);
059ec3d9
PH
2639 }
2640 break;
2641
2642 /* If the numerical value is unset, try for the string value */
2643
2644 case opt_expand_gid:
2645 if (! *get_set_flag(name, oltop, last, options_block))
2646 {
2647 sprintf(CS name2, "*expand_%.50s", name);
2648 ol2 = find_option(name2, oltop, last);
2649 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2650 {
2651 void *value2 = ol2->value;
2652 if (options_block != NULL)
2653 value2 = (void *)((uschar *)options_block + (long int)value2);
2654 s = *((uschar **)value2);
12f69989
PP
2655 if (!no_labels) printf("%s = ", name);
2656 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2657 break;
2658 }
2659 }
2660
2661 /* Else fall through */
2662
2663 case opt_gid:
12f69989 2664 if (!no_labels) printf("%s = ", name);
059ec3d9 2665 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2666 printf("\n");
059ec3d9
PH
2667 else
2668 {
2669 gr = getgrgid(*((int *)value));
2670 if (gr == NULL)
12f69989
PP
2671 printf("%ld\n", (long int)(*((int *)value)));
2672 else printf("%s\n", gr->gr_name);
059ec3d9
PH
2673 }
2674 break;
2675
2676 case opt_uidlist:
2677 uidlist = *((uid_t **)value);
12f69989 2678 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2679 if (uidlist != NULL)
2680 {
2681 int i;
2682 uschar sep = ' ';
12f69989 2683 if (no_labels) sep = '\0';
059ec3d9
PH
2684 for (i = 1; i <= (int)(uidlist[0]); i++)
2685 {
2686 uschar *name = NULL;
2687 pw = getpwuid(uidlist[i]);
2688 if (pw != NULL) name = US pw->pw_name;
12f69989
PP
2689 if (sep != '\0') printf("%c", sep);
2690 if (name != NULL) printf("%s", name);
2691 else printf("%ld", (long int)(uidlist[i]));
059ec3d9
PH
2692 sep = ':';
2693 }
2694 }
2695 printf("\n");
2696 break;
2697
2698 case opt_gidlist:
2699 gidlist = *((gid_t **)value);
12f69989 2700 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2701 if (gidlist != NULL)
2702 {
2703 int i;
2704 uschar sep = ' ';
12f69989 2705 if (no_labels) sep = '\0';
059ec3d9
PH
2706 for (i = 1; i <= (int)(gidlist[0]); i++)
2707 {
2708 uschar *name = NULL;
2709 gr = getgrgid(gidlist[i]);
2710 if (gr != NULL) name = US gr->gr_name;
12f69989
PP
2711 if (sep != '\0') printf("%c", sep);
2712 if (name != NULL) printf("%s", name);
2713 else printf("%ld", (long int)(gidlist[i]));
059ec3d9
PH
2714 sep = ':';
2715 }
2716 }
2717 printf("\n");
2718 break;
2719
2720 case opt_time:
12f69989
PP
2721 if (!no_labels) printf("%s = ", name);
2722 printf("%s\n", readconf_printtime(*((int *)value)));
059ec3d9
PH
2723 break;
2724
2725 case opt_timelist:
2726 {
2727 int i;
2728 int *list = (int *)value;
12f69989 2729 if (!no_labels) printf("%s = ", name);
059ec3d9
PH
2730 for (i = 0; i < list[1]; i++)
2731 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2732 printf("\n");
2733 }
2734 break;
2735
2736 case opt_bit:
2737 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2738 "" : "no_", name);
2739 break;
2740
2741 case opt_expand_bool:
2742 sprintf(CS name2, "*expand_%.50s", name);
2743 ol2 = find_option(name2, oltop, last);
2744 if (ol2 != NULL && ol2->value != NULL)
2745 {
2746 void *value2 = ol2->value;
2747 if (options_block != NULL)
2748 value2 = (void *)((uschar *)options_block + (long int)value2);
2749 s = *((uschar **)value2);
2750 if (s != NULL)
2751 {
12f69989
PP
2752 if (!no_labels) printf("%s = ", name);
2753 printf("%s\n", string_printing(s));
059ec3d9
PH
2754 break;
2755 }
2756 /* s == NULL => string not set; fall through */
2757 }
2758
2759 /* Fall through */
2760
2761 case opt_bool:
2762 case opt_bool_verify:
2763 case opt_bool_set:
2764 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2765 break;
2766 }
2767}
2768
2769
2770
2771/*************************************************
2772* Print value from main configuration *
2773*************************************************/
2774
2775/* This function, called as a result of encountering the -bP option,
2776causes the value of any main configuration variable to be output if the
2777second argument is NULL. There are some special values:
2778
2779 all print all main configuration options
44f6c01d
HSHR
2780 config_file print the name of the configuration file
2781 (configure_file will still work, for backward
2782 compatibility)
059ec3d9
PH
2783 routers print the routers' configurations
2784 transports print the transports' configuration
2785 authenticators print the authenticators' configuration
5d9c27ec 2786 macros print the macros' configuration
059ec3d9
PH
2787 router_list print a list of router names
2788 transport_list print a list of transport names
2789 authenticator_list print a list of authentication mechanism names
5d9c27ec 2790 macro_list print a list of macro names
059ec3d9
PH
2791 +name print a named list item
2792 local_scan print the local_scan options
bf3c2c6b 2793 config print the configuration as it is parsed
bc3c7bb7 2794 environment print the used execution environment
059ec3d9 2795
5d9c27ec
TK
2796If the second argument is not NULL, it must be one of "router", "transport",
2797"authenticator" or "macro" in which case the first argument identifies the
2798driver whose options are to be printed.
059ec3d9
PH
2799
2800Arguments:
2801 name option name if type == NULL; else driver name
2802 type NULL or driver type name, as described above
12f69989 2803 no_labels avoid the "foo = " at the start of an item
059ec3d9
PH
2804
2805Returns: nothing
2806*/
2807
2808void
12f69989 2809readconf_print(uschar *name, uschar *type, BOOL no_labels)
059ec3d9
PH
2810{
2811BOOL names_only = FALSE;
2812optionlist *ol;
2813optionlist *ol2 = NULL;
2814driver_instance *d = NULL;
5d9c27ec 2815macro_item *m;
059ec3d9
PH
2816int size = 0;
2817
2818if (type == NULL)
2819 {
2820 if (*name == '+')
2821 {
2822 int i;
2823 tree_node *t;
2824 BOOL found = FALSE;
2825 static uschar *types[] = { US"address", US"domain", US"host",
2826 US"localpart" };
2827 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2828 &hostlist_anchor, &localpartlist_anchor };
2829
2830 for (i = 0; i < 4; i++)
2831 {
2832 t = tree_search(*(anchors[i]), name+1);
2833 if (t != NULL)
2834 {
2835 found = TRUE;
12f69989
PP
2836 if (no_labels)
2837 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2838 else
2839 printf("%slist %s = %s\n", types[i], name+1,
2840 ((namedlist_block *)(t->data.ptr))->string);
059ec3d9
PH
2841 }
2842 }
2843
2844 if (!found)
2845 printf("no address, domain, host, or local part list called \"%s\" "
2846 "exists\n", name+1);
2847
2848 return;
2849 }
2850
d7bed771
JH
2851 if ( Ustrcmp(name, "configure_file") == 0
2852 || Ustrcmp(name, "config_file") == 0)
059ec3d9
PH
2853 {
2854 printf("%s\n", CS config_main_filename);
2855 return;
2856 }
2857
2858 if (Ustrcmp(name, "all") == 0)
2859 {
2860 for (ol = optionlist_config;
c0b9d3e8 2861 ol < optionlist_config + nelem(optionlist_config); ol++)
059ec3d9
PH
2862 {
2863 if ((ol->type & opt_hidden) == 0)
12f69989 2864 print_ol(ol, US ol->name, NULL,
c0b9d3e8 2865 optionlist_config, nelem(optionlist_config),
12f69989 2866 no_labels);
059ec3d9
PH
2867 }
2868 return;
2869 }
2870
2871 if (Ustrcmp(name, "local_scan") == 0)
2872 {
2873 #ifndef LOCAL_SCAN_HAS_OPTIONS
2874 printf("local_scan() options are not supported\n");
2875 #else
2876 for (ol = local_scan_options;
2877 ol < local_scan_options + local_scan_options_count; ol++)
2878 {
2879 print_ol(ol, US ol->name, NULL, local_scan_options,
12f69989 2880 local_scan_options_count, no_labels);
059ec3d9
PH
2881 }
2882 #endif
2883 return;
2884 }
2885
bf3c2c6b
HSHR
2886 if (Ustrcmp(name, "config") == 0)
2887 {
3257ed4b 2888 print_config(admin_user, no_labels);
bf3c2c6b
HSHR
2889 return;
2890 }
2891
059ec3d9
PH
2892 if (Ustrcmp(name, "routers") == 0)
2893 {
2894 type = US"router";
2895 name = NULL;
2896 }
2897 else if (Ustrcmp(name, "transports") == 0)
2898 {
2899 type = US"transport";
2900 name = NULL;
2901 }
2902
2903 else if (Ustrcmp(name, "authenticators") == 0)
2904 {
2905 type = US"authenticator";
2906 name = NULL;
2907 }
2908
5d9c27ec 2909 else if (Ustrcmp(name, "macros") == 0)
059ec3d9 2910 {
5d9c27ec 2911 type = US"macro";
059ec3d9 2912 name = NULL;
059ec3d9
PH
2913 }
2914
2915 else if (Ustrcmp(name, "router_list") == 0)
2916 {
2917 type = US"router";
2918 name = NULL;
2919 names_only = TRUE;
2920 }
5d9c27ec 2921
059ec3d9
PH
2922 else if (Ustrcmp(name, "transport_list") == 0)
2923 {
2924 type = US"transport";
2925 name = NULL;
2926 names_only = TRUE;
2927 }
5d9c27ec
TK
2928
2929 else if (Ustrcmp(name, "authenticator_list") == 0)
2930 {
2931 type = US"authenticator";
2932 name = NULL;
2933 names_only = TRUE;
2934 }
2935
2936 else if (Ustrcmp(name, "macro_list") == 0)
2937 {
2938 type = US"macro";
2939 name = NULL;
2940 names_only = TRUE;
2941 }
2942
bc3c7bb7
HSHR
2943 else if (Ustrcmp(name, "environment") == 0)
2944 {
2945 if (environ)
2946 {
77560253 2947 uschar ** p;
bc3c7bb7 2948 for (p = USS environ; *p; p++) ;
84bbb4d8 2949 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
bc3c7bb7
HSHR
2950
2951 for (p = USS environ; *p; p++)
2952 {
77560253
JH
2953 uschar * q;
2954 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
f2cb6292 2955 puts(CS *p);
bc3c7bb7
HSHR
2956 }
2957 }
2958 return;
2959 }
2960
059ec3d9
PH
2961 else
2962 {
c0b9d3e8
JH
2963 print_ol(find_option(name, optionlist_config, nelem(optionlist_config)),
2964 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
059ec3d9
PH
2965 return;
2966 }
2967 }
2968
2969/* Handle the options for a router or transport. Skip options that are flagged
2970as hidden. Some of these are options with names starting with '*', used for
2971internal alternative representations of other options (which the printing
2972function will sort out). Others are synonyms kept for backward compatibility.
2973*/
2974
2975if (Ustrcmp(type, "router") == 0)
2976 {
2977 d = (driver_instance *)routers;
2978 ol2 = optionlist_routers;
2979 size = optionlist_routers_size;
2980 }
2981else if (Ustrcmp(type, "transport") == 0)
2982 {
2983 d = (driver_instance *)transports;
2984 ol2 = optionlist_transports;
2985 size = optionlist_transports_size;
2986 }
2987else if (Ustrcmp(type, "authenticator") == 0)
2988 {
2989 d = (driver_instance *)auths;
2990 ol2 = optionlist_auths;
2991 size = optionlist_auths_size;
2992 }
2993
5d9c27ec
TK
2994else if (Ustrcmp(type, "macro") == 0)
2995 {
2996 /* People store passwords in macros and they were previously not available
2997 for printing. So we have an admin_users restriction. */
2998 if (!admin_user)
2999 {
3000 fprintf(stderr, "exim: permission denied\n");
3001 exit(EXIT_FAILURE);
3002 }
8e6c4db1 3003 if (!macros_builtin_created) macros_create_builtin();
c193398d
JH
3004 for (m = macros; m; m = m->next)
3005 if (!name || Ustrcmp(name, m->name) == 0)
5d9c27ec
TK
3006 {
3007 if (names_only)
3008 printf("%s\n", CS m->name);
3009 else
3010 printf("%s=%s\n", CS m->name, CS m->replacement);
c193398d 3011 if (name)
5d9c27ec
TK
3012 return;
3013 }
c193398d 3014 if (name)
5d9c27ec
TK
3015 printf("%s %s not found\n", type, name);
3016 return;
3017 }
3018
059ec3d9
PH
3019if (names_only)
3020 {
3021 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
3022 return;
3023 }
3024
3025/* Either search for a given driver, or print all of them */
3026
3027for (; d != NULL; d = d->next)
3028 {
3029 if (name == NULL)
3030 printf("\n%s %s:\n", d->name, type);
3031 else if (Ustrcmp(d->name, name) != 0) continue;
3032
3033 for (ol = ol2; ol < ol2 + size; ol++)
3034 {
3035 if ((ol->type & opt_hidden) == 0)
12f69989 3036 print_ol(ol, US ol->name, d, ol2, size, no_labels);
059ec3d9
PH
3037 }
3038
3039 for (ol = d->info->options;
3040 ol < d->info->options + *(d->info->options_count); ol++)
3041 {
3042 if ((ol->type & opt_hidden) == 0)
12f69989 3043 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
059ec3d9
PH
3044 }
3045 if (name != NULL) return;
3046 }
3047if (name != NULL) printf("%s %s not found\n", type, name);
3048}
3049
3050
3051
3052/*************************************************
3053* Read a named list item *
3054*************************************************/
3055
3056/* This function reads a name and a list (i.e. string). The name is used to
3057save the list in a tree, sorted by its name. Each entry also has a number,
3058which can be used for caching tests, but if the string contains any expansion
3059items other than $key, the number is set negative to inhibit caching. This
3060mechanism is used for domain, host, and address lists that are referenced by
3061the "+name" syntax.
3062
3063Arguments:
3064 anchorp points to the tree anchor
3065 numberp points to the current number for this tree
3066 max the maximum number permitted
3067 s the text of the option line, starting immediately after the name
3068 of the list type
3069 tname the name of the list type, for messages
3070
3071Returns: nothing
3072*/
3073
3074static void
3075read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
3076 uschar *tname)
3077{
3078BOOL forcecache = FALSE;
3079uschar *ss;
3080tree_node *t;
3081namedlist_block *nb = store_get(sizeof(namedlist_block));
3082
3083if (Ustrncmp(s, "_cache", 6) == 0)
3084 {
3085 forcecache = TRUE;
3086 s += 6;
3087 }
3088
3089if (!isspace(*s))
3090 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
3091
3092if (*numberp >= max)
3093 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
3094 tname, max);
3095
3096while (isspace(*s)) s++;
3097ss = s;
3098while (isalnum(*s) || *s == '_') s++;
3099t = store_get(sizeof(tree_node) + s-ss);
3100Ustrncpy(t->name, ss, s-ss);
3101t->name[s-ss] = 0;
3102while (isspace(*s)) s++;
3103
3104if (!tree_insertnode(anchorp, t))
3105 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3106 "duplicate name \"%s\" for a named %s", t->name, tname);
3107
3108t->data.ptr = nb;
3109nb->number = *numberp;
3110*numberp += 1;
3111
3112if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3113 "missing '=' after \"%s\"", t->name);
3114while (isspace(*s)) s++;
3115nb->string = read_string(s, t->name);
3116nb->cache_data = NULL;
3117
3118/* Check the string for any expansions; if any are found, mark this list
3119uncacheable unless the user has explicited forced caching. */
3120
3121if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
3122}
3123
3124
3125
3126
3127/*************************************************
3128* Unpick data for a rate limit *
3129*************************************************/
3130
3131/* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
3132separate values.
3133
3134Arguments:
3135 s string, in the form t,b,f,l
3136 where t is the threshold (integer)
3137 b is the initial delay (time)
3138 f is the multiplicative factor (fixed point)
3139 k is the maximum time (time)
3140 threshold where to store threshold
3141 base where to store base in milliseconds
3142 factor where to store factor in milliseconds
3143 limit where to store limit
3144
3145Returns: nothing (panics on error)
3146*/
3147
3148static void
3149unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
3150 int *limit)
3151{
3152uschar bstring[16], lstring[16];
3153
3154if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
3155 factor, lstring) == 4)
3156 {
3157 *base = readconf_readtime(bstring, 0, TRUE);
3158 *limit = readconf_readtime(lstring, 0, TRUE);
3159 if (*base >= 0 && *limit >= 0) return;
3160 }
3161log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
3162}
3163
3164
3165
3166
3375e053
PP
3167/*************************************************
3168* Drop privs for checking TLS config *
3169*************************************************/
3170
3171/* We want to validate TLS options during readconf, but do not want to be
3172root when we call into the TLS library, in case of library linkage errors
3173which cause segfaults; before this check, those were always done as the Exim
3174runtime user and it makes sense to continue with that.
3175
3176Assumes: tls_require_ciphers has been set, if it will be
3177 exim_user has been set, if it will be
3178 exim_group has been set, if it will be
3179
3180Returns: bool for "okay"; false will cause caller to immediately exit.
3181*/
3182
3183#ifdef SUPPORT_TLS
3184static BOOL
34e86e20 3185tls_dropprivs_validate_require_cipher(BOOL nowarn)
3375e053
PP
3186{
3187const uschar *errmsg;
3188pid_t pid;
3189int rc, status;
3190void (*oldsignal)(int);
3191
23f3dc67
JH
3192/* If TLS will never be used, no point checking ciphers */
3193
3194if ( !tls_advertise_hosts
3195 || !*tls_advertise_hosts
3196 || Ustrcmp(tls_advertise_hosts, ":") == 0
3197 )
3198 return TRUE;
34e86e20 3199else if (!nowarn && !tls_certificate)
23bb6982
JH
3200 log_write(0, LOG_MAIN,
3201 "Warning: No server certificate defined; will use a selfsigned one.\n"
23f3dc67
JH
3202 " Suggested action: either install a certificate or change tls_advertise_hosts option");
3203
3375e053
PP
3204oldsignal = signal(SIGCHLD, SIG_DFL);
3205
3206fflush(NULL);
3207if ((pid = fork()) < 0)
3208 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
3209
3210if (pid == 0)
3211 {
1d7a353e
PP
3212 /* in some modes, will have dropped privilege already */
3213 if (!geteuid())
3214 exim_setugid(exim_uid, exim_gid, FALSE,
3215 US"calling tls_validate_require_cipher");
3375e053
PP
3216
3217 errmsg = tls_validate_require_cipher();
3218 if (errmsg)
3219 {
3220 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3221 "tls_require_ciphers invalid: %s", errmsg);
3222 }
3223 fflush(NULL);
3224 _exit(0);
3225 }
3226
3227do {
3228 rc = waitpid(pid, &status, 0);
3229} while (rc < 0 && errno == EINTR);
3230
9d26b8c0 3231DEBUG(D_tls)
3375e053
PP
3232 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
3233 (int)pid, status);
3234
3235signal(SIGCHLD, oldsignal);
3236
3237return status == 0;
3238}
3239#endif /* SUPPORT_TLS */
3240
3241
3242
3243
059ec3d9
PH
3244/*************************************************
3245* Read main configuration options *
3246*************************************************/
3247
3248/* This function is the first to be called for configuration reading. It
3249opens the configuration file and reads general configuration settings until
3250it reaches the end of the configuration section. The file is then left open so
3251that the remaining configuration data can subsequently be read if needed for
3252this run of Exim.
3253
3254The configuration file must be owned either by root or exim, and be writeable
3255only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3256in the config file, so the test is done on the compiled in values. A slight
3257anomaly, to be carefully documented.
3258
3259The name of the configuration file is taken from a list that is included in the
3260binary of Exim. It can be altered from the command line, but if that is done,
3261root privilege is immediately withdrawn unless the caller is root or exim.
3262The first file on the list that exists is used.
3263
3264For use on multiple systems that share file systems, first look for a
3265configuration file whose name has the current node name on the end. If that is
3266not found, try the generic name. For really contorted configurations, that run
3267multiple Exims with different uid settings, first try adding the effective uid
3268before the node name. These complications are going to waste resources on most
3269systems. Therefore they are available only when requested by compile-time
3270options. */
3271
3272void
34e86e20 3273readconf_main(BOOL nowarn)
059ec3d9
PH
3274{
3275int sep = 0;
3276struct stat statbuf;
3277uschar *s, *filename;
55414b25 3278const uschar *list = config_main_filelist;
059ec3d9
PH
3279
3280/* Loop through the possible file names */
3281
8e6c4db1 3282while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
059ec3d9 3283 {
bc3c7bb7 3284
059ec3d9
PH
3285 /* Cut out all the fancy processing unless specifically wanted */
3286
3287 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3288 uschar *suffix = filename + Ustrlen(filename);
3289
3290 /* Try for the node-specific file if a node name exists */
3291
3292 #ifdef CONFIGURE_FILE_USE_NODE
3293 struct utsname uts;
3294 if (uname(&uts) >= 0)
3295 {
3296 #ifdef CONFIGURE_FILE_USE_EUID
3297 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3298 config_file = Ufopen(filename, "rb");
3299 if (config_file == NULL)
3300 #endif /* CONFIGURE_FILE_USE_EUID */
3301 {
3302 sprintf(CS suffix, ".%.256s", uts.nodename);
3303 config_file = Ufopen(filename, "rb");
3304 }
3305 }
3306 #endif /* CONFIGURE_FILE_USE_NODE */
3307
3308 /* Otherwise, try the generic name, possibly with the euid added */
3309
3310 #ifdef CONFIGURE_FILE_USE_EUID
3311 if (config_file == NULL)
3312 {
3313 sprintf(CS suffix, ".%ld", (long int)original_euid);
3314 config_file = Ufopen(filename, "rb");
3315 }
3316 #endif /* CONFIGURE_FILE_USE_EUID */
3317
3318 /* Finally, try the unadorned name */
3319
3320 if (config_file == NULL)
3321 {
3322 *suffix = 0;
3323 config_file = Ufopen(filename, "rb");
3324 }
3325 #else /* if neither defined */
3326
3327 /* This is the common case when the fancy processing is not included. */
3328
3329 config_file = Ufopen(filename, "rb");
3330 #endif
3331
3332 /* If the file does not exist, continue to try any others. For any other
3333 error, break out (and die). */
3334
3335 if (config_file != NULL || errno != ENOENT) break;
3336 }
3337
3de973a2
HSHR
3338/* Now, once we found and opened our configuration file, we change the directory
3339to a safe place. Later we change to $spool_directory. */
3340
3341if (Uchdir("/") < 0)
3342 {
3343 perror("exim: chdir `/': ");
3344 exit(EXIT_FAILURE);
3345 }
3346
059ec3d9
PH
3347/* On success, save the name for verification; config_filename is used when
3348logging configuration errors (it changes for .included files) whereas
3349config_main_filename is the name shown by -bP. Failure to open a configuration
3350file is a serious disaster. */
3351
3352if (config_file != NULL)
3353 {
98b8312f 3354 uschar *p;
059ec3d9 3355 config_filename = config_main_filename = string_copy(filename);
98b8312f 3356
b6fbf22d 3357 p = Ustrrchr(filename, '/');
94431adb 3358 config_main_directory = p ? string_copyn(filename, p - filename)
b6fbf22d 3359 : string_copy(US".");
059ec3d9
PH
3360 }
3361else
3362 {
3363 if (filename == NULL)
3364 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3365 "%s", config_main_filelist);
3366 else
3367 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3368 "configuration file %s", filename));
3369 }
3370
e2f5dc15 3371/* Check the status of the file we have opened, if we have retained root
fea24b2e 3372privileges and the file isn't /dev/null (which *should* be 0666). */
059ec3d9 3373
fea24b2e 3374if (trusted_config && Ustrcmp(filename, US"/dev/null"))
059ec3d9
PH
3375 {
3376 if (fstat(fileno(config_file), &statbuf) != 0)
3377 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3378 big_buffer);
3379
c1d94452 3380 if ((statbuf.st_uid != root_uid /* owner not root */
059ec3d9
PH
3381 #ifdef CONFIGURE_OWNER
3382 && statbuf.st_uid != config_uid /* owner not the special one */
3383 #endif
3384 ) || /* or */
c1d94452 3385 (statbuf.st_gid != root_gid /* group not root & */
35edf2ff
PH
3386 #ifdef CONFIGURE_GROUP
3387 && statbuf.st_gid != config_gid /* group not the special one */
8e669ac1 3388 #endif
35edf2ff 3389 && (statbuf.st_mode & 020) != 0) || /* group writeable */
059ec3d9
PH
3390 /* or */
3391 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3392
3393 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3394 "wrong owner, group, or mode", big_buffer);
3395 }
3396
3397/* Process the main configuration settings. They all begin with a lower case
3398letter. If we see something starting with an upper case letter, it is taken as
3399a macro definition. */
3400
3401while ((s = get_config_line()) != NULL)
3402 {
cf00dad6 3403 if (isupper(s[0])) read_macro_assignment(s);
059ec3d9
PH
3404
3405 else if (Ustrncmp(s, "domainlist", 10) == 0)
3406 read_named_list(&domainlist_anchor, &domainlist_count,
3407 MAX_NAMED_LIST, s+10, US"domain list");
3408
3409 else if (Ustrncmp(s, "hostlist", 8) == 0)
3410 read_named_list(&hostlist_anchor, &hostlist_count,
3411 MAX_NAMED_LIST, s+8, US"host list");
3412
3413 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3414 read_named_list(&addresslist_anchor, &addresslist_count,
3415 MAX_NAMED_LIST, s+11, US"address list");
3416
3417 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3418 read_named_list(&localpartlist_anchor, &localpartlist_count,
3419 MAX_NAMED_LIST, s+13, US"local part list");
3420
3421 else
3422 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3423 NULL, US"main option \"%s\" unknown");
3424 }
3425
3426
3427/* If local_sender_retain is set, local_from_check must be unset. */
3428
3429if (local_sender_retain && local_from_check)
3430 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3431 "local_sender_retain are set; this combination is not allowed");
3432
3433/* If the timezone string is empty, set it to NULL, implying no TZ variable
3434wanted. */
3435
3436if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3437
944a9c55
PH
3438/* The max retry interval must not be greater than 24 hours. */
3439
3440if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3441
059ec3d9
PH
3442/* remote_max_parallel must be > 0 */
3443
3444if (remote_max_parallel <= 0) remote_max_parallel = 1;
3445
6a3f1455
PH
3446/* Save the configured setting of freeze_tell, so we can re-instate it at the
3447start of a new SMTP message. */
3448
3449freeze_tell_config = freeze_tell;
3450
059ec3d9
PH
3451/* The primary host name may be required for expansion of spool_directory
3452and log_file_path, so make sure it is set asap. It is obtained from uname(),
3453but if that yields an unqualified value, make a FQDN by using gethostbyname to
3454canonize it. Some people like upper case letters in their host names, so we
3455don't force the case. */
3456
3457if (primary_hostname == NULL)
3458 {
55414b25 3459 const uschar *hostname;
059ec3d9
PH
3460 struct utsname uts;
3461 if (uname(&uts) < 0)
3462 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3463 hostname = US uts.nodename;
3464
3465 if (Ustrchr(hostname, '.') == NULL)
3466 {
3467 int af = AF_INET;
3468 struct hostent *hostdata;
3469
3470 #if HAVE_IPV6
7e66e54d 3471 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
55414b25
JH
3472 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3473 MCL_DOMAIN, TRUE, NULL) != OK))
059ec3d9
PH
3474 af = AF_INET6;
3475 #else
3476 af = AF_INET;
3477 #endif
3478
3479 for (;;)
3480 {
3481 #if HAVE_IPV6
3482 #if HAVE_GETIPNODEBYNAME
3483 int error_num;
3484 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3485 #else
3486 hostdata = gethostbyname2(CS hostname, af);
3487 #endif
3488 #else
3489 hostdata = gethostbyname(CS hostname);
3490 #endif
3491
3492 if (hostdata != NULL)
3493 {
3494 hostname = US hostdata->h_name;
3495 break;
3496 }
3497
3498 if (af == AF_INET) break;
3499 af = AF_INET;
3500 }
3501 }
3502
3503 primary_hostname = string_copy(hostname);
3504 }
3505
3506/* Set up default value for smtp_active_hostname */
3507
3508smtp_active_hostname = primary_hostname;
3509
3510/* If spool_directory wasn't set in the build-time configuration, it must have
3511got set above. Of course, writing to the log may not work if log_file_path is
3512not set, but it will at least get to syslog or somewhere, with any luck. */
3513
3514if (*spool_directory == 0)
3515 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3516 "proceed");
3517
3518/* Expand the spool directory name; it may, for example, contain the primary
3519host name. Same comment about failure. */
3520
3521s = expand_string(spool_directory);
3522if (s == NULL)
3523 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3524 "\"%s\": %s", spool_directory, expand_string_message);
3525spool_directory = s;
3526
3527/* Expand log_file_path, which must contain "%s" in any component that isn't
f1e5fef5
PP
3528the null string or "syslog". It is also allowed to contain one instance of %D
3529or %M. However, it must NOT contain % followed by anything else. */
059ec3d9
PH
3530
3531if (*log_file_path != 0)
3532 {
55414b25 3533 const uschar *ss, *sss;
059ec3d9
PH
3534 int sep = ':'; /* Fixed for log file path */
3535 s = expand_string(log_file_path);
3536 if (s == NULL)
3537 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3538 "\"%s\": %s", log_file_path, expand_string_message);
3539
3540 ss = s;
3541 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3542 {
3543 uschar *t;
3544 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3545 t = Ustrstr(sss, "%s");
3546 if (t == NULL)
3547 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3548 "contain \"%%s\"", sss);
3549 *t = 'X';
3550 t = Ustrchr(sss, '%');
3551 if (t != NULL)
3552 {
f1e5fef5 3553 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
059ec3d9
PH
3554 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3555 "unexpected \"%%\" character", s);
3556 }
3557 }
3558
3559 log_file_path = s;
3560 }
3561
3562/* Interpret syslog_facility into an integer argument for 'ident' param to
3563openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3564leading "log_". */
3565
3566if (syslog_facility_str != NULL)
3567 {
3568 int i;
3569 uschar *s = syslog_facility_str;
3570
3571 if ((Ustrlen(syslog_facility_str) >= 4) &&
3572 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3573 s += 4;
3574
3575 for (i = 0; i < syslog_list_size; i++)
3576 {
3577 if (strcmpic(s, syslog_list[i].name) == 0)
3578 {
3579 syslog_facility = syslog_list[i].value;
3580 break;
3581 }
3582 }
3583
3584 if (i >= syslog_list_size)
3585 {
3586 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3587 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3588 }
3589 }
3590
3591/* Expand pid_file_path */
3592
3593if (*pid_file_path != 0)
3594 {
3595 s = expand_string(pid_file_path);
3596 if (s == NULL)
3597 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3598 "\"%s\": %s", pid_file_path, expand_string_message);
3599 pid_file_path = s;
3600 }
3601
921b12ca
TF
3602/* Set default value of process_log_path */
3603
3604if (process_log_path == NULL || *process_log_path =='\0')
3605 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3606
059ec3d9
PH
3607/* Compile the regex for matching a UUCP-style "From_" line in an incoming
3608message. */
3609
3610regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3611
3612/* Unpick the SMTP rate limiting options, if set */
3613
3614if (smtp_ratelimit_mail != NULL)
3615 {
3616 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3617 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3618 }
3619
3620if (smtp_ratelimit_rcpt != NULL)
3621 {
3622 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3623 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3624 }
3625
3626/* The qualify domains default to the primary host name */
3627
3628if (qualify_domain_sender == NULL)
3629 qualify_domain_sender = primary_hostname;
3630if (qualify_domain_recipient == NULL)
3631 qualify_domain_recipient = qualify_domain_sender;
3632
3633/* Setting system_filter_user in the configuration sets the gid as well if a
3634name is given, but a numerical value does not. */
3635
3636if (system_filter_uid_set && !system_filter_gid_set)
3637 {
3638 struct passwd *pw = getpwuid(system_filter_uid);
3639 if (pw == NULL)
3640 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3641 (long int)system_filter_uid);
3642 system_filter_gid = pw->pw_gid;
3643 system_filter_gid_set = TRUE;
3644 }
3645
3646/* If the errors_reply_to field is set, check that it is syntactically valid
3647and ensure it contains a domain. */
3648
3649if (errors_reply_to != NULL)
3650 {
3651 uschar *errmess;
3652 int start, end, domain;
3653 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3654 &start, &end, &domain, FALSE);
3655
3656 if (recipient == NULL)
3657 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3658 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3659
3660 if (domain == 0)
3661 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3662 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3663 }
3664
3665/* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3666smtp_accept_max must also be set. */
3667
3668if (smtp_accept_max == 0 &&
3669 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3670 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3671 "smtp_accept_max must be set if smtp_accept_queue or "
3672 "smtp_accept_max_per_host is set");
3673
3674/* Set up the host number if anything is specified. It is an expanded string
3675so that it can be computed from the host name, for example. We do this last
3676so as to ensure that everything else is set up before the expansion. */
3677
3678if (host_number_string != NULL)
3679 {
ef840681 3680 long int n;
059ec3d9
PH
3681 uschar *end;
3682 uschar *s = expand_string(host_number_string);
ef840681
PP
3683 if (s == NULL)
3684 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3685 "failed to expand localhost_number \"%s\": %s",
3686 host_number_string, expand_string_message);
3687 n = Ustrtol(s, &end, 0);
059ec3d9
PH
3688 while (isspace(*end)) end++;
3689 if (*end != 0)
3690 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3691 "localhost_number value is not a number: %s", s);
3692 if (n > LOCALHOST_MAX)
3693 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3694 "localhost_number is greater than the maximum allowed value (%d)",
3695 LOCALHOST_MAX);
3696 host_number = n;
3697 }
3698
3699#ifdef SUPPORT_TLS
3700/* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3701
3702if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3703 tls_verify_certificates == NULL)
3704 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3705 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3706 (tls_verify_hosts != NULL)? "" : "try_");
77bb000f 3707
3375e053
PP
3708/* This also checks that the library linkage is working and we can call
3709routines in it, so call even if tls_require_ciphers is unset */
34e86e20 3710if (!tls_dropprivs_validate_require_cipher(nowarn))
3375e053
PP
3711 exit(1);
3712
3713/* Magic number: at time of writing, 1024 has been the long-standing value
3714used by so many clients, and what Exim used to use always, that it makes
3715sense to just min-clamp this max-clamp at that. */
3716if (tls_dh_max_bits < 1024)
3717 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3718 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3719
77bb000f
PP
3720/* If openssl_options is set, validate it */
3721if (openssl_options != NULL)
3722 {
3723# ifdef USE_GNUTLS
3724 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3725 "openssl_options is set but we're using GnuTLS");
77bb000f
PP
3726# else
3727 long dummy;
3728 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3729 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3730 "openssl_options parse error: %s", openssl_options);
77bb000f
PP
3731# endif
3732 }
32d07012 3733#endif /*SUPPORT_TLS*/
bc3c7bb7 3734
34e86e20 3735if (!nowarn && !keep_environment && environ && *environ)
bc3c7bb7 3736 log_write(0, LOG_MAIN,
8e58ed80
HSHR
3737 "Warning: purging the environment.\n"
3738 " Suggested action: use keep_environment.");
059ec3d9
PH
3739}
3740
3741
3742
3743/*************************************************
3744* Initialize one driver *
3745*************************************************/
3746
3747/* This is called once the driver's generic options, if any, have been read.
3748We can now find the driver, set up defaults for the private options, and
3749unset any "set" bits in the private options table (which might have been
3750set by another incarnation of the same driver).
3751
3752Arguments:
3753 d pointer to driver instance block, with generic
3754 options filled in
3755 drivers_available vector of available drivers
3756 size_of_info size of each block in drivers_available
3757 class class of driver, for error message
3758
3759Returns: pointer to the driver info block
3760*/
3761
3762static driver_info *
3763init_driver(driver_instance *d, driver_info *drivers_available,
3764 int size_of_info, uschar *class)
3765{
3766driver_info *dd;
3767
3768for (dd = drivers_available; dd->driver_name[0] != 0;
3769 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3770 {
3771 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3772 {
3773 int i;
3774 int len = dd->options_len;
3775 d->info = dd;
3776 d->options_block = store_get(len);
3777 memcpy(d->options_block, dd->options_block, len);
3778 for (i = 0; i < *(dd->options_count); i++)
3779 dd->options[i].type &= ~opt_set;
3780 return dd;
3781 }
3782 }
3783
3784log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3785 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3786
3787return NULL; /* never obeyed */
3788}
3789
3790
3791
3792
3793/*************************************************
3794* Initialize driver list *
3795*************************************************/
3796
3797/* This function is called for routers, transports, and authentication
3798mechanisms. It reads the data from the current point in the configuration file
3799up to the end of the section, and sets up a chain of instance blocks according
3800to the file's contents. The file will already have been opened by a call to
3801readconf_main, and must be left open for subsequent reading of further data.
3802
3803Any errors cause a panic crash. Note that the blocks with names driver_info and
3804driver_instance must map the first portions of all the _info and _instance
3805blocks for this shared code to work.
3806
3807Arguments:
3808 class "router", "transport", or "authenticator"
3809 anchor &routers, &transports, &auths
3810 drivers_available available drivers
3811 size_of_info size of each info block
3812 instance_default points to default data for an instance
3813 instance_size size of instance block
3814 driver_optionlist generic option list
3815 driver_optionlist_count count of generic option list
3816
3817Returns: nothing