Builtin macros for sha3-hash and ed25519-signing support
[exim.git] / src / src / readconf.c
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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
9242a7e8 5/* Copyright (c) University of Cambridge 1995 - 2017 */
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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
d185889f 14#ifdef MACRO_PREDEF
5f69a529 15# include "macro_predef.h"
d185889f 16#endif
059ec3d9 17
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18static uschar * syslog_facility_str;
19static void fn_smtp_receive_timeout(const uschar *, const uschar *);
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20
21/*************************************************
22* Main configuration options *
23*************************************************/
24
25/* The list of options that can be set in the main configuration file. This
26must be in alphabetic order because it is searched by binary chop. */
27
28static optionlist optionlist_config[] = {
29 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
30 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
31 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
32 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
33 { "accept_8bitmime", opt_bool, &accept_8bitmime },
34 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
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35#ifdef WITH_CONTENT_SCAN
36 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
37#endif
45b91596 38 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
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39 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
40 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
41 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
8ccd00b1 42#ifndef DISABLE_PRDR
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43 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
44#endif
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45#ifndef DISABLE_DKIM
46 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
47#endif
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48 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
49 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
50 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
51 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
52 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
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53#ifdef WITH_CONTENT_SCAN
54 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
55#endif
8f128379 56 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
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57 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
58 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
59 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
60#ifdef SUPPORT_TLS
61 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
62#endif
63 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
bc3c7bb7 64 { "add_environment", opt_stringptr, &add_environment },
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65 { "admin_groups", opt_gidlist, &admin_groups },
66 { "allow_domain_literals", opt_bool, &allow_domain_literals },
67 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
68 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
69 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
70 { "auto_thaw", opt_time, &auto_thaw },
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71#ifdef WITH_CONTENT_SCAN
72 { "av_scanner", opt_stringptr, &av_scanner },
73#endif
059ec3d9 74 { "bi_command", opt_stringptr, &bi_command },
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75#ifdef EXPERIMENTAL_BRIGHTMAIL
76 { "bmi_config_file", opt_stringptr, &bmi_config_file },
77#endif
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78 { "bounce_message_file", opt_stringptr, &bounce_message_file },
79 { "bounce_message_text", opt_stringptr, &bounce_message_text },
80 { "bounce_return_body", opt_bool, &bounce_return_body },
62b7cd08 81 { "bounce_return_linesize_limit", opt_mkint, &bounce_return_linesize_limit },
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82 { "bounce_return_message", opt_bool, &bounce_return_message },
83 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
84 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
85 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
86 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
87 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
88 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
89 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
90 { "check_log_inodes", opt_int, &check_log_inodes },
91 { "check_log_space", opt_Kint, &check_log_space },
a0d6ba8a 92 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
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93 { "check_spool_inodes", opt_int, &check_spool_inodes },
94 { "check_spool_space", opt_Kint, &check_spool_space },
aa368db3 95 { "chunking_advertise_hosts", opt_stringptr, &chunking_advertise_hosts },
f33875c3 96 { "commandline_checks_require_admin", opt_bool,&commandline_checks_require_admin },
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97 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
98 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
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99 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
100 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
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101#ifdef EXPERIMENTAL_DCC
102 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
103 { "dccifd_address", opt_stringptr, &dccifd_address },
104 { "dccifd_options", opt_stringptr, &dccifd_options },
105#endif
64073d9c 106 { "debug_store", opt_bool, &debug_store },
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107 { "delay_warning", opt_timelist, &delay_warning },
108 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
109 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
110 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
111 { "delivery_date_remove", opt_bool, &delivery_date_remove },
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112#ifdef ENABLE_DISABLE_FSYNC
113 { "disable_fsync", opt_bool, &disable_fsync },
114#endif
7e66e54d 115 { "disable_ipv6", opt_bool, &disable_ipv6 },
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116#ifndef DISABLE_DKIM
117 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
118#endif
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119#ifdef EXPERIMENTAL_DMARC
120 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
121 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
122 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
123#endif
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124 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
125 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
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126 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
127 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
83712b39 128 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
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129 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
130 { "dns_retrans", opt_time, &dns_retrans },
131 { "dns_retry", opt_int, &dns_retry },
9820a77f 132 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
e97d1f08 133 { "dns_use_edns0", opt_int, &dns_use_edns0 },
4c04137d 134 /* This option is now a no-op, retained for compatibility */
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135 { "drop_cr", opt_bool, &drop_cr },
136/*********************************************************/
6c1c3d1d 137 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
0e22dfd1 138 { "dsn_from", opt_stringptr, &dsn_from },
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139 { "envelope_to_remove", opt_bool, &envelope_to_remove },
140 { "errors_copy", opt_stringptr, &errors_copy },
141 { "errors_reply_to", opt_stringptr, &errors_reply_to },
0cbf2b82 142#ifndef DISABLE_EVENT
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143 { "event_action", opt_stringptr, &event_action },
144#endif
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145 { "exim_group", opt_gid, &exim_gid },
146 { "exim_path", opt_stringptr, &exim_path },
147 { "exim_user", opt_uid, &exim_uid },
148 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
149 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
150 { "finduser_retries", opt_int, &finduser_retries },
151 { "freeze_tell", opt_stringptr, &freeze_tell },
152 { "gecos_name", opt_stringptr, &gecos_name },
153 { "gecos_pattern", opt_stringptr, &gecos_pattern },
83da1223 154#ifdef SUPPORT_TLS
2519e60d 155 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
e6060e2c 156 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
83da1223 157#endif
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158 { "header_line_maxsize", opt_int, &header_line_maxsize },
159 { "header_maxsize", opt_int, &header_maxsize },
160 { "headers_charset", opt_stringptr, &headers_charset },
161 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
162 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
163 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
164 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
165 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
166 { "hold_domains", opt_stringptr, &hold_domains },
167 { "host_lookup", opt_stringptr, &host_lookup },
168 { "host_lookup_order", opt_stringptr, &host_lookup_order },
169 { "host_reject_connection", opt_stringptr, &host_reject_connection },
170 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
cee5f132 171#ifdef SUPPORT_PROXY
7a2fa0bc 172 { "hosts_proxy", opt_stringptr, &hosts_proxy },
cee5f132 173#endif
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174 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
175#ifdef LOOKUP_IBASE
176 { "ibase_servers", opt_stringptr, &ibase_servers },
177#endif
178 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
179 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
180 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
bc3c7bb7 181 { "keep_environment", opt_stringptr, &keep_environment },
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182 { "keep_malformed", opt_time, &keep_malformed },
183#ifdef LOOKUP_LDAP
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184 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
185 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
186 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
187 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
188 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
059ec3d9 189 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
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190 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
191 { "ldap_start_tls", opt_bool, &eldap_start_tls },
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192 { "ldap_version", opt_int, &eldap_version },
193#endif
194 { "local_from_check", opt_bool, &local_from_check },
195 { "local_from_prefix", opt_stringptr, &local_from_prefix },
196 { "local_from_suffix", opt_stringptr, &local_from_suffix },
197 { "local_interfaces", opt_stringptr, &local_interfaces },
198 { "local_scan_timeout", opt_time, &local_scan_timeout },
199 { "local_sender_retain", opt_bool, &local_sender_retain },
200 { "localhost_number", opt_stringptr, &host_number_string },
201 { "log_file_path", opt_stringptr, &log_file_path },
202 { "log_selector", opt_stringptr, &log_selector_string },
203 { "log_timezone", opt_bool, &log_timezone },
204 { "lookup_open_max", opt_int, &lookup_open_max },
205 { "max_username_length", opt_int, &max_username_length },
ddea74fa 206 { "message_body_newlines", opt_bool, &message_body_newlines },
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207 { "message_body_visible", opt_mkint, &message_body_visible },
208 { "message_id_header_domain", opt_stringptr, &message_id_domain },
209 { "message_id_header_text", opt_stringptr, &message_id_text },
210 { "message_logs", opt_bool, &message_logs },
211 { "message_size_limit", opt_stringptr, &message_size_limit },
212#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
213 { "move_frozen_messages", opt_bool, &move_frozen_messages },
214#endif
215 { "mua_wrapper", opt_bool, &mua_wrapper },
216#ifdef LOOKUP_MYSQL
217 { "mysql_servers", opt_stringptr, &mysql_servers },
218#endif
219 { "never_users", opt_uidlist, &never_users },
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220#ifdef SUPPORT_TLS
221 { "openssl_options", opt_stringptr, &openssl_options },
222#endif
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223#ifdef LOOKUP_ORACLE
224 { "oracle_servers", opt_stringptr, &oracle_servers },
225#endif
226 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
227#ifdef EXIM_PERL
228 { "perl_at_start", opt_bool, &opt_perl_at_start },
229 { "perl_startup", opt_stringptr, &opt_perl_startup },
2f680c0c 230 { "perl_taintmode", opt_bool, &opt_perl_taintmode },
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231#endif
232#ifdef LOOKUP_PGSQL
233 { "pgsql_servers", opt_stringptr, &pgsql_servers },
234#endif
235 { "pid_file_path", opt_stringptr, &pid_file_path },
236 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
8ccd00b1 237#ifndef DISABLE_PRDR
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238 { "prdr_enable", opt_bool, &prdr_enable },
239#endif
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240 { "preserve_message_logs", opt_bool, &preserve_message_logs },
241 { "primary_hostname", opt_stringptr, &primary_hostname },
242 { "print_topbitchars", opt_bool, &print_topbitchars },
243 { "process_log_path", opt_stringptr, &process_log_path },
244 { "prod_requires_admin", opt_bool, &prod_requires_admin },
245 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
246 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
247 { "queue_domains", opt_stringptr, &queue_domains },
248 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
249 { "queue_only", opt_bool, &queue_only },
250 { "queue_only_file", opt_stringptr, &queue_only_file },
251 { "queue_only_load", opt_fixed, &queue_only_load },
8669f003 252 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
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253 { "queue_only_override", opt_bool, &queue_only_override },
254 { "queue_run_in_order", opt_bool, &queue_run_in_order },
0cd5fd23 255 { "queue_run_max", opt_stringptr, &queue_run_max },
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256 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
257 { "receive_timeout", opt_time, &receive_timeout },
258 { "received_header_text", opt_stringptr, &received_header_text },
259 { "received_headers_max", opt_int, &received_headers_max },
260 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
261 { "recipients_max", opt_int, &recipients_max },
262 { "recipients_max_reject", opt_bool, &recipients_max_reject },
de78e2d5 263#ifdef LOOKUP_REDIS
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264 { "redis_servers", opt_stringptr, &redis_servers },
265#endif
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266 { "remote_max_parallel", opt_int, &remote_max_parallel },
267 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
268 { "retry_data_expire", opt_time, &retry_data_expire },
269 { "retry_interval_max", opt_time, &retry_interval_max },
270 { "return_path_remove", opt_bool, &return_path_remove },
271 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
272 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
273 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
274 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
846430d9 275 { "slow_lookup_log", opt_int, &slow_lookup_log },
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276 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
277 { "smtp_accept_max", opt_int, &smtp_accept_max },
278 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
279 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
280 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
281 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
282 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
283 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
284 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
285 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
286 { "smtp_banner", opt_stringptr, &smtp_banner },
287 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
288 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
289 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
290 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
291 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
292 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
293 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
294 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
295 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
296 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
297 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
1ad6489e 298 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
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299 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
300 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
8c5d388a 301#ifdef SUPPORT_I18N
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302 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
303#endif
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304#ifdef WITH_CONTENT_SCAN
305 { "spamd_address", opt_stringptr, &spamd_address },
306#endif
7952eef9 307#ifdef SUPPORT_SPF
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308 { "spf_guess", opt_stringptr, &spf_guess },
309#endif
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310 { "split_spool_directory", opt_bool, &split_spool_directory },
311 { "spool_directory", opt_stringptr, &spool_directory },
328c5688 312 { "spool_wireformat", opt_bool, &spool_wireformat },
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313#ifdef LOOKUP_SQLITE
314 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
315#endif
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316#ifdef EXPERIMENTAL_SRS
317 { "srs_config", opt_stringptr, &srs_config },
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318 { "srs_hashlength", opt_int, &srs_hashlength },
319 { "srs_hashmin", opt_int, &srs_hashmin },
320 { "srs_maxage", opt_int, &srs_maxage },
321 { "srs_secrets", opt_stringptr, &srs_secrets },
322 { "srs_usehash", opt_bool, &srs_usehash },
323 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
8523533c 324#endif
38a0a95f 325 { "strict_acl_vars", opt_bool, &strict_acl_vars },
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326 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
327 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
328 { "syslog_duplication", opt_bool, &syslog_duplication },
329 { "syslog_facility", opt_stringptr, &syslog_facility_str },
2333e06f 330 { "syslog_pid", opt_bool, &syslog_pid },
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331 { "syslog_processname", opt_stringptr, &syslog_processname },
332 { "syslog_timestamp", opt_bool, &syslog_timestamp },
333 { "system_filter", opt_stringptr, &system_filter },
334 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
335 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
336 { "system_filter_group", opt_gid, &system_filter_gid },
337 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
338 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
339 { "system_filter_user", opt_uid, &system_filter_uid },
340 { "tcp_nodelay", opt_bool, &tcp_nodelay },
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341#ifdef USE_TCP_WRAPPERS
342 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
343#endif
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344 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
345 { "timezone", opt_stringptr, &timezone_string },
059ec3d9 346 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
23f3dc67 347#ifdef SUPPORT_TLS
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348 { "tls_certificate", opt_stringptr, &tls_certificate },
349 { "tls_crl", opt_stringptr, &tls_crl },
3375e053 350 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
059ec3d9 351 { "tls_dhparam", opt_stringptr, &tls_dhparam },
10ca4f1c 352 { "tls_eccurve", opt_stringptr, &tls_eccurve },
f2de3a33 353# ifndef DISABLE_OCSP
3f7eeb86 354 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
817d9f57
JH
355# endif
356 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
059ec3d9
PH
357 { "tls_privatekey", opt_stringptr, &tls_privatekey },
358 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
359 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
360 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
361 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
362 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
363#endif
364 { "trusted_groups", opt_gidlist, &trusted_groups },
365 { "trusted_users", opt_uidlist, &trusted_users },
366 { "unknown_login", opt_stringptr, &unknown_login },
367 { "unknown_username", opt_stringptr, &unknown_username },
368 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
369 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
370 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
371 { "warn_message_file", opt_stringptr, &warn_message_file },
372 { "write_rejectlog", opt_bool, &write_rejectlog }
373};
374
cab0c277 375#ifndef MACRO_PREDEF
d7bed771 376static int optionlist_config_size = nelem(optionlist_config);
cab0c277 377#endif
059ec3d9
PH
378
379
d185889f
JH
380#ifdef MACRO_PREDEF
381
382static void fn_smtp_receive_timeout(const uschar * name, const uschar * str) {/*Dummy*/}
383
384void
385options_main(void)
386{
387options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN", NULL);
388}
389
390void
391options_auths(void)
392{
393struct auth_info * ai;
394uschar buf[64];
395
396options_from_list(optionlist_auths, optionlist_auths_size, US"AUTHENTICATORS", NULL);
397
398for (ai = auths_available; ai->driver_name[0]; ai++)
399 {
cab0c277 400 spf(buf, sizeof(buf), US"_DRIVER_AUTHENTICATOR_%T", ai->driver_name);
d185889f
JH
401 builtin_macro_create(buf);
402 options_from_list(ai->options, (unsigned)*ai->options_count, US"AUTHENTICATOR", ai->driver_name);
403 }
404}
405
406
407#else /*!MACRO_PREDEF*/
408
409extern char **environ;
410
411static void save_config_line(const uschar* line);
412static void save_config_position(const uschar *file, int line);
413static void print_config(BOOL admin, BOOL terse);
414
415
416#define CSTATE_STACK_SIZE 10
417
418const uschar *config_directory = NULL;
419
420
421/* Structure for chain (stack) of .included files */
422
423typedef struct config_file_item {
424 struct config_file_item *next;
425 const uschar *filename;
426 const uschar *directory;
427 FILE *file;
428 int lineno;
429} config_file_item;
430
431/* Structure for chain of configuration lines (-bP config) */
432
433typedef struct config_line_item {
434 struct config_line_item *next;
435 uschar *line;
436} config_line_item;
437
438static config_line_item* config_lines;
439
440/* Structure of table of conditional words and their state transitions */
441
442typedef struct cond_item {
443 uschar *name;
444 int namelen;
445 int action1;
446 int action2;
447 int pushpop;
448} cond_item;
449
450/* Structure of table of syslog facility names and values */
451
452typedef struct syslog_fac_item {
453 uschar *name;
454 int value;
455} syslog_fac_item;
456
457/* constants */
458static const char * const hidden = "<value not displayable>";
459
460/* Static variables */
461
462static config_file_item *config_file_stack = NULL; /* For includes */
463
464static uschar *syslog_facility_str = NULL;
465static uschar next_section[24];
466static uschar time_buffer[24];
467
468/* State variables for conditional loading (.ifdef / .else / .endif) */
469
470static int cstate = 0;
471static int cstate_stack_ptr = -1;
472static int cstate_stack[CSTATE_STACK_SIZE];
473
474/* Table of state transitions for handling conditional inclusions. There are
475four possible state transitions:
476
477 .ifdef true
478 .ifdef false
479 .elifdef true (or .else)
480 .elifdef false
481
482.endif just causes the previous cstate to be popped off the stack */
483
484static int next_cstate[3][4] =
485 {
486 /* State 0: reading from file, or reading until next .else or .endif */
487 { 0, 1, 2, 2 },
488 /* State 1: condition failed, skipping until next .else or .endif */
489 { 2, 2, 0, 1 },
490 /* State 2: skipping until .endif */
491 { 2, 2, 2, 2 },
492 };
493
494/* Table of conditionals and the states to set. For each name, there are four
495values: the length of the name (to save computing it each time), the state to
496set if a macro was found in the line, the state to set if a macro was not found
497in the line, and a stack manipulation setting which is:
498
499 -1 pull state value off the stack
500 0 don't alter the stack
501 +1 push value onto stack, before setting new state
502*/
503
504static cond_item cond_list[] = {
505 { US"ifdef", 5, 0, 1, 1 },
506 { US"ifndef", 6, 1, 0, 1 },
507 { US"elifdef", 7, 2, 3, 0 },
508 { US"elifndef", 8, 3, 2, 0 },
509 { US"else", 4, 2, 2, 0 },
510 { US"endif", 5, 0, 0, -1 }
511};
512
513static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
514
515/* Table of syslog facility names and their values */
516
517static syslog_fac_item syslog_list[] = {
518 { US"mail", LOG_MAIL },
519 { US"user", LOG_USER },
520 { US"news", LOG_NEWS },
521 { US"uucp", LOG_UUCP },
522 { US"local0", LOG_LOCAL0 },
523 { US"local1", LOG_LOCAL1 },
524 { US"local2", LOG_LOCAL2 },
525 { US"local3", LOG_LOCAL3 },
526 { US"local4", LOG_LOCAL4 },
527 { US"local5", LOG_LOCAL5 },
528 { US"local6", LOG_LOCAL6 },
529 { US"local7", LOG_LOCAL7 },
530 { US"daemon", LOG_DAEMON }
531};
532
533static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
534
535
536
059ec3d9
PH
537
538/*************************************************
539* Find the name of an option *
540*************************************************/
541
542/* This function is to aid debugging. Various functions take arguments that are
543pointer variables in the options table or in option tables for various drivers.
544For debugging output, it is useful to be able to find the name of the option
545which is currently being processed. This function finds it, if it exists, by
546searching the table(s).
547
548Arguments: a value that is presumed to be in the table above
549Returns: the option name, or an empty string
550*/
551
552uschar *
553readconf_find_option(void *p)
554{
555int i;
556router_instance *r;
557transport_instance *t;
558
c0b9d3e8 559for (i = 0; i < nelem(optionlist_config); i++)
059ec3d9
PH
560 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
561
d7bed771 562for (r = routers; r; r = r->next)
059ec3d9
PH
563 {
564 router_info *ri = r->info;
c4b738a9 565 for (i = 0; i < *ri->options_count; i++)
059ec3d9
PH
566 {
567 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
5903c6ff 568 if (p == CS (r->options_block) + (long int)(ri->options[i].value))
059ec3d9
PH
569 return US ri->options[i].name;
570 }
571 }
572
d7bed771 573for (t = transports; t; t = t->next)
059ec3d9
PH
574 {
575 transport_info *ti = t->info;
c4b738a9 576 for (i = 0; i < *ti->options_count; i++)
059ec3d9 577 {
c4b738a9
JH
578 optionlist * op = &ti->options[i];
579 if ((op->type & opt_mask) != opt_stringptr) continue;
580 if (p == ( op->type & opt_public
5903c6ff
JH
581 ? CS t
582 : CS t->options_block
c4b738a9
JH
583 )
584 + (long int)op->value)
585 return US op->name;
059ec3d9
PH
586 }
587 }
588
589return US"";
590}
591
592
593
594
cf00dad6
PH
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
9650d98a 604Returns: FALSE iff fatal error
cf00dad6
PH
605*/
606
9650d98a
JH
607BOOL
608macro_read_assignment(uschar *s)
cf00dad6
PH
609{
610uschar name[64];
611int namelen = 0;
612BOOL redef = FALSE;
613macro_item *m;
cf00dad6
PH
614
615while (isalnum(*s) || *s == '_')
616 {
617 if (namelen >= sizeof(name) - 1)
9650d98a
JH
618 {
619 log_write(0, LOG_PANIC|LOG_CONFIG_IN,
ef840681 620 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
9650d98a
JH
621 return FALSE;
622 }
cf00dad6
PH
623 name[namelen++] = *s++;
624 }
625name[namelen] = 0;
626
627while (isspace(*s)) s++;
628if (*s++ != '=')
9650d98a
JH
629 {
630 log_write(0, LOG_PANIC|LOG_CONFIG_IN, "malformed macro definition");
631 return FALSE;
632 }
cf00dad6
PH
633
634if (*s == '=')
635 {
636 redef = TRUE;
637 s++;
638 }
639while (isspace(*s)) s++;
640
641/* If an existing macro of the same name was defined on the command line, we
642just skip this definition. It's an error to attempt to redefine a macro without
643redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
644It is also an error to define a macro whose name begins with the name of a
165acdd1 645previously defined macro.
c193398d 646Note: it is documented that the other way round works. */
cf00dad6 647
165acdd1 648if ((m = macro_search_prefix(name)))
cf00dad6 649 {
165acdd1 650 if (m->namelen < namelen) /* substring match */
9650d98a
JH
651 {
652 log_write(0, LOG_CONFIG|LOG_PANIC, "\"%s\" cannot be defined as "
cf00dad6 653 "a macro because previously defined macro \"%s\" is a substring",
165acdd1
JH
654 name, m->tnode.name);
655 return FALSE;
656 }
657 /* exact match */
658 if (!m->command_line && !redef)
659 {
660 log_write(0, LOG_CONFIG|LOG_PANIC, "macro \"%s\" is already "
661 "defined (use \"==\" if you want to redefine it", name);
9650d98a
JH
662 return FALSE;
663 }
cf00dad6 664
165acdd1
JH
665 if (m->command_line) /* overriding cmdline definition */
666 return TRUE;
cf00dad6
PH
667 }
668
cf00dad6
PH
669/* Redefinition must refer to an existing macro. */
670
671if (redef)
c193398d 672 if (m)
b8f899cf
JH
673 {
674 m->replen = Ustrlen(s);
165acdd1 675 m->tnode.data.ptr = string_copy(s);
b8f899cf 676 }
c193398d 677 else
9650d98a
JH
678 {
679 log_write(0, LOG_CONFIG|LOG_PANIC, "can't redefine an undefined macro "
cf00dad6 680 "\"%s\"", name);
9650d98a
JH
681 return FALSE;
682 }
cf00dad6 683
c193398d 684/* We have a new definition. */
cf00dad6 685else
165acdd1 686 (void) macro_create(name, s, FALSE);
9650d98a 687return TRUE;
8e6c4db1
JH
688}
689
690
cf00dad6
PH
691
692
059ec3d9 693
9650d98a
JH
694/* Process line for macros. The line is in big_buffer starting at offset len.
695Expand big_buffer if needed. Handle definitions of new macros, and
696imacro expansions, rewriting the line in thw buffer.
697
698Arguments:
699 len Offset in buffer of start of line
700 newlen Pointer to offset of end of line, updated on return
701 macro_found Pointer to return that a macro was expanded
702
703Return: pointer to first nonblank char in line
704*/
705
706uschar *
707macros_expand(int len, int * newlen, BOOL * macro_found)
708{
709uschar * ss = big_buffer + len;
710uschar * s;
9650d98a
JH
711
712/* Find the true start of the physical line - leading spaces are always
713ignored. */
714
715while (isspace(*ss)) ss++;
716
717/* Process the physical line for macros. If this is the start of the logical
718line, skip over initial text at the start of the line if it starts with an
719upper case character followed by a sequence of name characters and an equals
720sign, because that is the definition of a new macro, and we don't do
721replacement therein. */
722
723s = ss;
724if (len == 0 && isupper(*s))
725 {
726 while (isalnum(*s) || *s == '_') s++;
727 while (isspace(*s)) s++;
728 if (*s != '=') s = ss; /* Not a macro definition */
729 }
730
165acdd1
JH
731/* Scan the line (from after XXX= if present), replacing any macros. Rescan
732after replacement for any later-defined macros. */
9650d98a
JH
733
734*macro_found = FALSE;
165acdd1 735while (*s)
9650d98a 736 {
165acdd1 737 if (isupper(*s) || *s == '_' && isupper(s[1]))
9650d98a 738 {
165acdd1
JH
739 macro_item * m;
740 unsigned mnum = 0;
9650d98a 741
165acdd1 742 while ((m = macro_search_largest_prefix(s)) && m->m_number > mnum)
9650d98a 743 {
165acdd1
JH
744 uschar * pp;
745 int moveby;
9650d98a 746
165acdd1 747 /* Expand the buffer if necessary */
9650d98a 748
165acdd1
JH
749 while (*newlen - m->namelen + m->replen + 1 > big_buffer_size)
750 {
751 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
752 uschar *newbuffer = store_malloc(newsize);
753 memcpy(newbuffer, big_buffer, *newlen + 1);
754 s = newbuffer + (s - big_buffer);
755 ss = newbuffer + (ss - big_buffer);
756 big_buffer_size = newsize;
757 store_free(big_buffer);
758 big_buffer = newbuffer;
759 }
760
761 /* Shuffle the remaining characters up or down in the buffer before
762 copying in the replacement text. Don't rescan the replacement for this
763 same macro. */
764
765 pp = s + m->namelen;
766 if ((moveby = m->replen - m->namelen) != 0)
767 {
768 memmove(s + m->replen, pp, (big_buffer + *newlen) - pp + 1);
769 *newlen += moveby;
770 }
771 Ustrncpy(s, m->tnode.data.ptr, m->replen);
772 *macro_found = TRUE;
773 mnum = m->m_number;
9650d98a 774 }
9650d98a 775 }
165acdd1 776 s++;
9650d98a
JH
777 }
778
779/* An empty macro replacement at the start of a line could mean that ss no
780longer points to the first non-blank character. */
781
782while (isspace(*ss)) ss++;
783return ss;
784}
785
059ec3d9
PH
786/*************************************************
787* Read configuration line *
788*************************************************/
789
790/* A logical line of text is read from the configuration file into the big
791buffer, taking account of macros, .includes, and continuations. The size of
792big_buffer is increased if necessary. The count of configuration lines is
793maintained. Physical input lines starting with # (ignoring leading white space,
794and after macro replacement) and empty logical lines are always ignored.
795Leading and trailing spaces are removed.
796
797If we hit a line of the form "begin xxxx", the xxxx is placed in the
798next_section vector, and the function returns NULL, indicating the end of a
799configuration section. On end-of-file, NULL is returned with next_section
800empty.
801
802Arguments: none
803
804Returns: a pointer to the first non-blank in the line,
805 or NULL if eof or end of section is reached
806*/
807
808static uschar *
809get_config_line(void)
810{
811int startoffset = 0; /* To first non-blank char in logical line */
812int len = 0; /* Of logical line so far */
813int newlen;
814uschar *s, *ss;
059ec3d9
PH
815BOOL macro_found;
816
817/* Loop for handling continuation lines, skipping comments, and dealing with
818.include files. */
819
820for (;;)
821 {
822 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
823 {
824 if (config_file_stack != NULL) /* EOF inside .include */
825 {
f1e894f3 826 (void)fclose(config_file);
059ec3d9
PH
827 config_file = config_file_stack->file;
828 config_filename = config_file_stack->filename;
29f67888 829 config_directory = config_file_stack->directory;
059ec3d9
PH
830 config_lineno = config_file_stack->lineno;
831 config_file_stack = config_file_stack->next;
bf3c2c6b
HSHR
832 if (config_lines)
833 save_config_position(config_filename, config_lineno);
059ec3d9
PH
834 continue;
835 }
836
837 /* EOF at top level */
838
839 if (cstate_stack_ptr >= 0)
840 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
841 "Unexpected end of configuration file: .endif missing");
842
843 if (len != 0) break; /* EOF after continuation */
844 next_section[0] = 0; /* EOF at start of logical line */
845 return NULL;
846 }
847
848 config_lineno++;
849 newlen = len + Ustrlen(big_buffer + len);
850
bf3c2c6b
HSHR
851 if (config_lines && config_lineno == 1)
852 save_config_position(config_filename, config_lineno);
853
059ec3d9
PH
854 /* Handle pathologically long physical lines - yes, it did happen - by
855 extending big_buffer at this point. The code also copes with very long
856 logical lines. */
857
858 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
859 {
860 uschar *newbuffer;
861 big_buffer_size += BIG_BUFFER_SIZE;
862 newbuffer = store_malloc(big_buffer_size);
863
864 /* This use of strcpy is OK because we know that the string in the old
865 buffer is shorter than the new buffer. */
866
867 Ustrcpy(newbuffer, big_buffer);
868 store_free(big_buffer);
869 big_buffer = newbuffer;
870 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
871 break;
872 newlen += Ustrlen(big_buffer + newlen);
873 }
874
9650d98a 875 ss = macros_expand(len, &newlen, &macro_found);
059ec3d9
PH
876
877 /* Check for comment lines - these are physical lines. */
878
879 if (*ss == '#') continue;
880
881 /* Handle conditionals, which are also applied to physical lines. Conditions
882 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
883 expansion occured on the rest of the line. A preliminary test for the leading
884 '.' saves effort on most lines. */
885
886 if (*ss == '.')
887 {
888 int i;
889
890 /* Search the list of conditional directives */
891
892 for (i = 0; i < cond_list_size; i++)
893 {
894 int n;
895 cond_item *c = cond_list+i;
896 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
897
898 /* The following character must be white space or end of string */
899
900 n = ss[1 + c->namelen];
901 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
902
903 /* .ifdef and .ifndef push the current state onto the stack, then set
904 a new one from the table. Stack overflow is an error */
905
906 if (c->pushpop > 0)
907 {
908 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
909 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
910 ".%s nested too deeply", c->name);
911 cstate_stack[++cstate_stack_ptr] = cstate;
912 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
913 }
914
915 /* For any of the others, stack underflow is an error. The next state
916 comes either from the stack (.endif) or from the table. */
917
918 else
919 {
920 if (cstate_stack_ptr < 0)
921 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
922 ".%s without matching .ifdef", c->name);
923 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
924 next_cstate[cstate][macro_found? c->action1 : c->action2];
925 }
926
927 /* Having dealt with a directive, break the loop */
928
929 break;
930 }
931
932 /* If we have handled a conditional directive, continue with the next
933 physical line. Otherwise, fall through. */
934
935 if (i < cond_list_size) continue;
936 }
937
938 /* If the conditional state is not 0 (actively using these lines), ignore
939 this input line. */
940
941 if (cstate != 0) continue; /* Conditional skip */
942
943 /* Handle .include lines - these are also physical lines. */
944
945 if (Ustrncmp(ss, ".include", 8) == 0 &&
946 (isspace(ss[8]) ||
947 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
948 {
949 uschar *t;
950 int include_if_exists = isspace(ss[8])? 0 : 10;
951 config_file_item *save;
952 struct stat statbuf;
953
954 ss += 9 + include_if_exists;
955 while (isspace(*ss)) ss++;
956 t = ss + Ustrlen(ss);
957 while (t > ss && isspace(t[-1])) t--;
958 if (*ss == '\"' && t[-1] == '\"')
959 {
960 ss++;
961 t--;
962 }
963 *t = 0;
964
29f67888
HSHR
965 /* We allow relative file names. For security reasons currently
966 relative names not allowed with .include_if_exists. For .include_if_exists
967 we need to check the permissions/ownership of the containing folder */
145396a6 968 if (*ss != '/')
29f67888
HSHR
969 if (include_if_exists) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
970 "absolute path \"%s\"", ss);
971 else
972 {
acec9514
JH
973 gstring * g = string_append(NULL, 3, config_directory, "/", ss);
974 ss = string_from_gstring(g);
29f67888 975 }
145396a6 976
059ec3d9
PH
977 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
978
bf3c2c6b
HSHR
979 if (config_lines)
980 save_config_position(config_filename, config_lineno);
059ec3d9
PH
981 save = store_get(sizeof(config_file_item));
982 save->next = config_file_stack;
983 config_file_stack = save;
984 save->file = config_file;
985 save->filename = config_filename;
29f67888 986 save->directory = config_directory;
059ec3d9
PH
987 save->lineno = config_lineno;
988
10c50704 989 if (!(config_file = Ufopen(ss, "rb")))
059ec3d9
PH
990 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
991 "configuration file %s", ss);
10c50704 992
059ec3d9 993 config_filename = string_copy(ss);
863bd541 994 config_directory = string_copyn(ss, CUstrrchr(ss, '/') - ss);
059ec3d9
PH
995 config_lineno = 0;
996 continue;
997 }
998
999 /* If this is the start of the logical line, remember where the non-blank
1000 data starts. Otherwise shuffle down continuation lines to remove leading
1001 white space. */
1002
1003 if (len == 0)
1004 startoffset = ss - big_buffer;
1005 else
1006 {
1007 s = big_buffer + len;
1008 if (ss > s)
1009 {
1010 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1011 newlen -= ss - s;
1012 }
1013 }
1014
1015 /* Accept the new addition to the line. Remove trailing white space. */
1016
1017 len = newlen;
1018 while (len > 0 && isspace(big_buffer[len-1])) len--;
1019 big_buffer[len] = 0;
1020
1021 /* We are done if the line does not end in backslash and contains some data.
1022 Empty logical lines are ignored. For continuations, remove the backslash and
1023 go round the loop to read the continuation line. */
1024
1025 if (len > 0)
1026 {
1027 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1028 big_buffer[--len] = 0; /* Remove backslash */
1029 }
1030 } /* Loop for reading multiple physical lines */
1031
1032/* We now have a logical line. Test for the end of a configuration section (or,
1033more accurately, for the start of the next section). Place the name of the next
1034section in next_section, and return NULL. If the name given is longer than
1035next_section, truncate it. It will be unrecognized later, because all the known
1036section names do fit. Leave space for pluralizing. */
1037
1038s = big_buffer + startoffset; /* First non-space character */
bf3c2c6b
HSHR
1039
1040if (config_lines)
1041 save_config_line(s);
1042
059ec3d9
PH
1043if (strncmpic(s, US"begin ", 6) == 0)
1044 {
1045 s += 6;
1046 while (isspace(*s)) s++;
1047 if (big_buffer + len - s > sizeof(next_section) - 2)
1048 s[sizeof(next_section) - 2] = 0;
1049 Ustrcpy(next_section, s);
1050 return NULL;
1051 }
1052
1053/* Return the first non-blank character. */
1054
1055return s;
1056}
1057
1058
1059
1060/*************************************************
1061* Read a name *
1062*************************************************/
1063
1064/* The yield is the pointer to the next uschar. Names longer than the
1065output space are silently truncated. This function is also used from acl.c when
1066parsing ACLs.
1067
1068Arguments:
1069 name where to put the name
1070 len length of name
1071 s input pointer
1072
1073Returns: new input pointer
1074*/
1075
1076uschar *
1077readconf_readname(uschar *name, int len, uschar *s)
1078{
1079int p = 0;
1080while (isspace(*s)) s++;
1081if (isalpha(*s))
1082 {
1083 while (isalnum(*s) || *s == '_')
1084 {
1085 if (p < len-1) name[p++] = *s;
1086 s++;
1087 }
1088 }
1089name[p] = 0;
1090while (isspace(*s)) s++;
1091return s;
1092}
1093
1094
1095
1096
1097/*************************************************
1098* Read a time value *
1099*************************************************/
1100
1101/* This function is also called from outside, to read argument
1102time values. The format of a time value is:
1103
1104 [<n>w][<n>d][<n>h][<n>m][<n>s]
1105
1106as long as at least one is present. If a format error is encountered,
1107return a negative value. The value must be terminated by the given
1108terminator.
1109
1110Arguments:
1111 s input pointer
1112 terminator required terminating character
1113 return_msec if TRUE, allow fractional seconds and return milliseconds
1114
1115Returns: the time value, or -1 on syntax error
1116 value is seconds if return_msec is FALSE
1117 value is milliseconds if return_msec is TRUE
1118*/
1119
1120int
1ad6489e 1121readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
059ec3d9
PH
1122{
1123int yield = 0;
1124for (;;)
1125 {
1126 int value, count;
1127 double fraction;
1128
1129 if (!isdigit(*s)) return -1;
1ad6489e 1130 (void)sscanf(CCS s, "%d%n", &value, &count);
059ec3d9
PH
1131 s += count;
1132
1133 switch (*s)
1134 {
1135 case 'w': value *= 7;
1136 case 'd': value *= 24;
1137 case 'h': value *= 60;
1138 case 'm': value *= 60;
1139 case 's': s++;
1140 break;
1141
1142 case '.':
1143 if (!return_msec) return -1;
1ad6489e 1144 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
059ec3d9
PH
1145 s += count;
1146 if (*s++ != 's') return -1;
1147 yield += (int)(fraction * 1000.0);
1148 break;
1149
1150 default: return -1;
1151 }
1152
1153 if (return_msec) value *= 1000;
1154 yield += value;
1155 if (*s == terminator) return yield;
1156 }
1157/* Control never reaches here. */
1158}
1159
1160
1161
1162/*************************************************
1163* Read a fixed point value *
1164*************************************************/
1165
1166/* The value is returned *1000
1167
1168Arguments:
1169 s input pointer
1170 terminator required terminator
1171
1172Returns: the value, or -1 on error
1173*/
1174
1175static int
55414b25 1176readconf_readfixed(const uschar *s, int terminator)
059ec3d9
PH
1177{
1178int yield = 0;
1179int value, count;
1180if (!isdigit(*s)) return -1;
1181(void)sscanf(CS s, "%d%n", &value, &count);
1182s += count;
1183yield = value * 1000;
1184if (*s == '.')
1185 {
1186 int m = 100;
1187 while (isdigit((*(++s))))
1188 {
1189 yield += (*s - '0') * m;
1190 m /= 10;
1191 }
1192 }
1193
1194return (*s == terminator)? yield : (-1);
1195}
1196
1197
1198
1199/*************************************************
1200* Find option in list *
1201*************************************************/
1202
1203/* The lists are always in order, so binary chop can be used.
1204
1205Arguments:
1206 name the option name to search for
1207 ol the first entry in the option list
1208 last one more than the offset of the last entry in the option list
1209
1210Returns: pointer to an option entry, or NULL if not found
1211*/
1212
1213static optionlist *
1214find_option(uschar *name, optionlist *ol, int last)
1215{
1216int first = 0;
1217while (last > first)
1218 {
1219 int middle = (first + last)/2;
1220 int c = Ustrcmp(name, ol[middle].name);
d7bed771 1221
059ec3d9 1222 if (c == 0) return ol + middle;
d7bed771
JH
1223 else if (c > 0) first = middle + 1;
1224 else last = middle;
059ec3d9
PH
1225 }
1226return NULL;
1227}
1228
1229
1230
1231/*************************************************
1232* Find a set flag in option list *
1233*************************************************/
1234
1235/* Because some versions of Unix make no restrictions on the values of uids and
1236gids (even negative ones), we cannot represent "unset" by a special value.
1237There is therefore a separate boolean variable for each one indicating whether
1238a value is set or not. This function returns a pointer to the boolean, given
1239the original option name. It is a major disaster if the flag cannot be found.
1240
1241Arguments:
1242 name the name of the uid or gid option
1243 oltop points to the start of the relevant option list
1244 last one more than the offset of the last item in the option list
1245 data_block NULL when reading main options => data values in the option
1246 list are absolute addresses; otherwise they are byte offsets
1247 in data_block (used for driver options)
1248
1249Returns: a pointer to the boolean flag.
1250*/
1251
1252static BOOL *
1253get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1254{
1255optionlist *ol;
1256uschar name2[64];
1257sprintf(CS name2, "*set_%.50s", name);
1258ol = find_option(name2, oltop, last);
1259if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1260 "Exim internal error: missing set flag for %s", name);
1261return (data_block == NULL)? (BOOL *)(ol->value) :
5903c6ff 1262 (BOOL *)(US data_block + (long int)(ol->value));
059ec3d9
PH
1263}
1264
1265
1266
1267
1268/*************************************************
1269* Output extra characters message and die *
1270*************************************************/
1271
1272/* Called when an option line has junk on the end. Sometimes this is because
1273the sysadmin thinks comments are permitted.
1274
1275Arguments:
1276 s points to the extra characters
1277 t1..t3 strings to insert in the log message
1278
1279Returns: doesn't return; dies
1280*/
1281
1282static void
55414b25 1283extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
059ec3d9
PH
1284{
1285uschar *comment = US"";
1286if (*s == '#') comment = US" (# is comment only at line start)";
1287log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1288 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1289}
1290
1291
1292
1293/*************************************************
1294* Read rewrite information *
1295*************************************************/
1296
1297/* Each line of rewrite information contains:
1298
1299. A complete address in the form user@domain, possibly with
1300 leading * for each part; or alternatively, a regex.
1301
1302. A replacement string (which will be expanded).
1303
1304. An optional sequence of one-letter flags, indicating which
1305 headers etc. to apply this rule to.
1306
1307All this is decoded and placed into a control block. The OR of the flags is
1308maintained in a common word.
1309
1310Arguments:
1311 p points to the string that makes up the rule
1312 existflags points to the overall flag word
1313 isglobal TRUE if reading global rewrite rules
1314
1315Returns: the control block for the parsed rule.
1316*/
1317
1318static rewrite_rule *
55414b25 1319readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
059ec3d9
PH
1320{
1321rewrite_rule *next = store_get(sizeof(rewrite_rule));
1322
1323next->next = NULL;
1324next->key = string_dequote(&p);
1325
1326while (isspace(*p)) p++;
1327if (*p == 0)
1328 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1329 "missing rewrite replacement string");
1330
1331next->flags = 0;
1332next->replacement = string_dequote(&p);
1333
1334while (*p != 0) switch (*p++)
1335 {
1336 case ' ': case '\t': break;
1337
1338 case 'q': next->flags |= rewrite_quit; break;
1339 case 'w': next->flags |= rewrite_whole; break;
1340
1341 case 'h': next->flags |= rewrite_all_headers; break;
1342 case 's': next->flags |= rewrite_sender; break;
1343 case 'f': next->flags |= rewrite_from; break;
1344 case 't': next->flags |= rewrite_to; break;
1345 case 'c': next->flags |= rewrite_cc; break;
1346 case 'b': next->flags |= rewrite_bcc; break;
1347 case 'r': next->flags |= rewrite_replyto; break;
1348
1349 case 'E': next->flags |= rewrite_all_envelope; break;
1350 case 'F': next->flags |= rewrite_envfrom; break;
1351 case 'T': next->flags |= rewrite_envto; break;
1352
1353 case 'Q': next->flags |= rewrite_qualify; break;
1354 case 'R': next->flags |= rewrite_repeat; break;
1355
1356 case 'S':
1357 next->flags |= rewrite_smtp;
1358 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1359 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1360 "rewrite rule has the S flag but is not a regular expression");
1361 break;
1362
1363 default:
1364 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1365 "unknown rewrite flag character '%c' "
1366 "(could be missing quotes round replacement item)", p[-1]);
1367 break;
1368 }
1369
1370/* If no action flags are set, set all the "normal" rewrites. */
1371
1372if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1373 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1374
1375/* Remember which exist, for optimization, and return the rule */
1376
1377*existflags |= next->flags;
1378return next;
1379}
1380
1381
1382
1383
1384/*************************************************
1385* Read global rewrite information *
1386*************************************************/
1387
1388/* Each line is a single rewrite rule; it is parsed into a control block
1389by readconf_one_rewrite(), and its flags are ORed into the global flag
1390word rewrite_existflags. */
1391
1392void
1393readconf_rewrites(void)
1394{
1395rewrite_rule **chain = &global_rewrite_rules;
1396uschar *p;
1397
1398while ((p = get_config_line()) != NULL)
1399 {
1400 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1401 *chain = next;
1402 chain = &(next->next);
1403 }
1404}
1405
1406
1407
1408/*************************************************
1409* Read a string *
1410*************************************************/
1411
1412/* Strings are read into the normal store pool. As long we aren't too
1413near the end of the current block, the string will just use what is necessary
1414on the top of the stacking pool, because string_cat() uses the extension
1415mechanism.
1416
1417Argument:
1418 s the rest of the input line
1419 name the option name (for errors)
1420
1421Returns: pointer to the string
1422*/
1423
1424static uschar *
55414b25 1425read_string(const uschar *s, const uschar *name)
059ec3d9
PH
1426{
1427uschar *yield;
55414b25 1428const uschar *ss;
059ec3d9
PH
1429
1430if (*s != '\"') return string_copy(s);
1431
1432ss = s;
1433yield = string_dequote(&s);
1434
1435if (s == ss+1 || s[-1] != '\"')
1436 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1437 "missing quote at end of string value for %s", name);
1438
1439if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1440
1441return yield;
1442}
1443
1444
1445/*************************************************
1ad6489e
JH
1446* Custom-handler options *
1447*************************************************/
1448static void
1449fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1450{
1ad6489e
JH
1451if (*str == '$')
1452 smtp_receive_timeout_s = string_copy(str);
1453else
1454 {
1455 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1456 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1457 if (smtp_receive_timeout < 0)
1458 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1459 name);
1460 }
1461}
1462
1463/*************************************************
059ec3d9
PH
1464* Handle option line *
1465*************************************************/
1466
1467/* This function is called from several places to process a line containing the
1468setting of an option. The first argument is the line to be decoded; it has been
1469checked not to be empty and not to start with '#'. Trailing newlines and white
1470space have been removed. The second argument is a pointer to the list of
1471variable names that are to be recognized, together with their types and
1472locations, and the third argument gives the number of entries in the list.
1473
1474The fourth argument is a pointer to a data block. If it is NULL, then the data
1475values in the options list are absolute addresses. Otherwise, they are byte
1476offsets in the data block.
1477
1478String option data may continue onto several lines; this function reads further
1479data from config_file if necessary.
1480
1481The yield of this function is normally zero. If a string continues onto
1482multiple lines, then the data value is permitted to be followed by a comma
1483or a semicolon (for use in drivers) and the yield is that character.
1484
1485Arguments:
1486 buffer contains the configuration line to be handled
1487 oltop points to the start of the relevant option list
1488 last one more than the offset of the last item in the option list
1489 data_block NULL when reading main options => data values in the option
1490 list are absolute addresses; otherwise they are byte offsets
1491 in data_block when they have opt_public set; otherwise
1492 they are byte offsets in data_block->options_block.
1493 unknown_txt format string to use in panic message for unknown option;
1494 must contain %s for option name
1495 if given as NULL, don't panic on unknown option
1496
1497Returns: TRUE if an option was read successfully,
1498 FALSE false for an unknown option if unknown_txt == NULL,
1499 otherwise panic and die on an unknown option
1500*/
1501
1502static BOOL
1503readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1504 void *data_block, uschar *unknown_txt)
1505{
1506int ptr = 0;
1507int offset = 0;
1508int n, count, type, value;
1509int issecure = 0;
1510uid_t uid;
1511gid_t gid;
1512BOOL boolvalue = TRUE;
1513BOOL freesptr = TRUE;
1514optionlist *ol, *ol2;
1515struct passwd *pw;
1516void *reset_point;
1517int intbase = 0;
1518uschar *inttype = US"";
1519uschar *sptr;
1520uschar *s = buffer;
532be449 1521uschar **str_target;
059ec3d9
PH
1522uschar name[64];
1523uschar name2[64];
1524
1525/* There may be leading spaces; thereafter, we expect an option name starting
1526with a letter. */
1527
1528while (isspace(*s)) s++;
1529if (!isalpha(*s))
1530 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1531
1532/* Read the name of the option, and skip any subsequent white space. If
1533it turns out that what we read was "hide", set the flag indicating that
1534this is a secure option, and loop to read the next word. */
1535
1536for (n = 0; n < 2; n++)
1537 {
1538 while (isalnum(*s) || *s == '_')
1539 {
1540 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1541 s++;
1542 }
1543 name[ptr] = 0;
1544 while (isspace(*s)) s++;
1545 if (Ustrcmp(name, "hide") != 0) break;
1546 issecure = opt_secure;
1547 ptr = 0;
1548 }
1549
1550/* Deal with "no_" or "not_" here for booleans */
1551
1552if (Ustrncmp(name, "no_", 3) == 0)
1553 {
1554 boolvalue = FALSE;
1555 offset = 3;
1556 }
1557
1558if (Ustrncmp(name, "not_", 4) == 0)
1559 {
1560 boolvalue = FALSE;
1561 offset = 4;
1562 }
1563
1564/* Search the list for the given name. A non-existent name, or an option that
1565is set twice, is a disaster. */
1566
d7bed771 1567if (!(ol = find_option(name + offset, oltop, last)))
059ec3d9
PH
1568 {
1569 if (unknown_txt == NULL) return FALSE;
1570 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1571 }
1572
846726c5
JH
1573if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1574 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1575 "\"%s\" option set for the second time", name);
059ec3d9
PH
1576
1577ol->type |= opt_set | issecure;
1578type = ol->type & opt_mask;
1579
1580/* Types with data values must be followed by '='; the "no[t]_" prefix
1581applies only to boolean values. */
1582
1583if (type < opt_bool || type > opt_bool_last)
1584 {
1585 if (offset != 0)
1586 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1587 "negation prefix applied to a non-boolean option");
1588 if (*s == 0)
1589 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1590 "unexpected end of line (data missing) after %s", name);
1591 if (*s != '=')
1592 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1593 }
1594
1595/* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
9c695f6d 1596true/false/yes/no, or, in the case of opt_expand_bool, a general string that
059ec3d9
PH
1597ultimately expands to one of those values. */
1598
1599else if (*s != 0 && (offset != 0 || *s != '='))
1600 extra_chars_error(s, US"boolean option ", name, US"");
1601
1602/* Skip white space after = */
1603
1604if (*s == '=') while (isspace((*(++s))));
1605
1606/* If there is a data block and the opt_public flag is not set, change
1607the data block pointer to the private options block. */
1608
1609if (data_block != NULL && (ol->type & opt_public) == 0)
1610 data_block = (void *)(((driver_instance *)data_block)->options_block);
1611
1612/* Now get the data according to the type. */
1613
1614switch (type)
1615 {
1616 /* If a string value is not enclosed in quotes, it consists of
1617 the rest of the current line, verbatim. Otherwise, string escapes
1618 are processed.
1619
1620 A transport is specified as a string, which is then looked up in the
1621 list of transports. A search type is specified as one of a number of
1622 known strings.
1623
1624 A set or rewrite rules for a driver is specified as a string, which is
1625 then parsed into a suitable chain of control blocks.
1626
1627 Uids and gids are specified as strings which are then looked up in the
1628 passwd file. Lists of uids and gids are similarly specified as colon-
1629 separated strings. */
1630
1631 case opt_stringptr:
1632 case opt_uid:
1633 case opt_gid:
1634 case opt_expand_uid:
1635 case opt_expand_gid:
1636 case opt_uidlist:
1637 case opt_gidlist:
1638 case opt_rewrite:
1639
1640 reset_point = sptr = read_string(s, name);
1641
1642 /* Having read a string, we now have several different ways of using it,
1643 depending on the data type, so do another switch. If keeping the actual
1644 string is not required (because it is interpreted), freesptr is set TRUE,
1645 and at the end we reset the pool. */
1646
1647 switch (type)
1648 {
1649 /* If this was a string, set the variable to point to the new string,
1650 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1651 rules, we still keep the string (for printing), and parse the rules into a
1652 control block and flags word. */
1653
1654 case opt_stringptr:
adaa0e2c
JH
1655 str_target = data_block ? USS (US data_block + (long int)(ol->value))
1656 : USS (ol->value);
846726c5 1657 if (ol->type & opt_rep_con)
532be449 1658 {
adaa0e2c 1659 uschar * saved_condition;
6a8de854
PP
1660 /* We already have a condition, we're conducting a crude hack to let
1661 multiple condition rules be chained together, despite storing them in
1662 text form. */
adaa0e2c
JH
1663 *str_target = string_copy_malloc( (saved_condition = *str_target)
1664 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1665 saved_condition, sptr)
1666 : sptr);
846726c5
JH
1667 /* TODO(pdp): there is a memory leak here and just below
1668 when we set 3 or more conditions; I still don't
1669 understand the store mechanism enough to know
1670 what's the safe way to free content from an earlier store.
6a8de854
PP
1671 AFAICT, stores stack, so freeing an early stored item also stores
1672 all data alloc'd after it. If we knew conditions were adjacent,
1673 we could survive that, but we don't. So I *think* we need to take
1674 another bit from opt_type to indicate "malloced"; this seems like
1675 quite a hack, especially for this one case. It also means that
1676 we can't ever reclaim the store from the *first* condition.
1677
1678 Because we only do this once, near process start-up, I'm prepared to
1679 let this slide for the time being, even though it rankles. */
532be449 1680 }
76146973
JH
1681 else if (ol->type & opt_rep_str)
1682 {
2ad78978
JH
1683 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1684 int sep_i = -(int)sep_o;
55414b25 1685 const uschar * list = sptr;
2ad78978 1686 uschar * s;
acec9514 1687 gstring * list_o = NULL;
4226691b 1688
acec9514
JH
1689 if (*str_target)
1690 {
1691 list_o = string_get(Ustrlen(*str_target) + Ustrlen(sptr));
1692 list_o = string_cat(list_o, *str_target);
1693 }
2ad78978
JH
1694
1695 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
acec9514
JH
1696 list_o = string_append_listele(list_o, sep_o, s);
1697
2ad78978 1698 if (list_o)
acec9514 1699 *str_target = string_copy_malloc(string_from_gstring(list_o));
76146973 1700 }
532be449
PP
1701 else
1702 {
1703 *str_target = sptr;
1704 freesptr = FALSE;
1705 }
1706 break;
1707
059ec3d9 1708 case opt_rewrite:
adaa0e2c
JH
1709 if (data_block)
1710 *USS (US data_block + (long int)(ol->value)) = sptr;
059ec3d9 1711 else
adaa0e2c 1712 *USS (ol->value) = sptr;
059ec3d9
PH
1713 freesptr = FALSE;
1714 if (type == opt_rewrite)
1715 {
1716 int sep = 0;
1717 int *flagptr;
1718 uschar *p = sptr;
1719 rewrite_rule **chain;
1720 optionlist *ol3;
1721
1722 sprintf(CS name2, "*%.50s_rules", name);
1723 ol2 = find_option(name2, oltop, last);
1724 sprintf(CS name2, "*%.50s_flags", name);
1725 ol3 = find_option(name2, oltop, last);
1726
1727 if (ol2 == NULL || ol3 == NULL)
1728 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1729 "rewrite rules not available for driver");
1730
1731 if (data_block == NULL)
1732 {
1733 chain = (rewrite_rule **)(ol2->value);
1734 flagptr = (int *)(ol3->value);
1735 }
1736 else
1737 {
5903c6ff
JH
1738 chain = (rewrite_rule **)(US data_block + (long int)(ol2->value));
1739 flagptr = (int *)(US data_block + (long int)(ol3->value));
059ec3d9
PH
1740 }
1741
55414b25 1742 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
059ec3d9
PH
1743 {
1744 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1745 *chain = next;
1746 chain = &(next->next);
1747 }
1748
1749 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1750 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1751 "non-header rewrite - not allowed at transport time -");
1752 }
1753 break;
1754
1755 /* If it was an expanded uid, see if there is any expansion to be
1756 done by checking for the presence of a $ character. If there is, save it
1757 in the corresponding *expand_user option field. Otherwise, fall through
1758 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1759 of data. */
1760
1761 case opt_expand_uid:
1762 sprintf(CS name2, "*expand_%.50s", name);
1763 ol2 = find_option(name2, oltop, last);
1764 if (ol2 != NULL)
1765 {
1766 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1767
1768 if (data_block == NULL)
1769 *((uschar **)(ol2->value)) = ss;
1770 else
5903c6ff 1771 *((uschar **)(US data_block + (long int)(ol2->value))) = ss;
059ec3d9
PH
1772
1773 if (ss != NULL)
1774 {
1775 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1776 freesptr = FALSE;
1777 break;
1778 }
1779 }
1780
1781 /* Look up a fixed uid, and also make use of the corresponding gid
1782 if a passwd entry is returned and the gid has not been set. */
1783
1784 case opt_uid:
1785 if (!route_finduser(sptr, &pw, &uid))
1786 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1787 if (data_block == NULL)
1788 *((uid_t *)(ol->value)) = uid;
1789 else
5903c6ff 1790 *((uid_t *)(US data_block + (long int)(ol->value))) = uid;
059ec3d9
PH
1791
1792 /* Set the flag indicating a fixed value is set */
1793
1794 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1795
1796 /* Handle matching gid if we have a passwd entry: done by finding the
1797 same name with terminating "user" changed to "group"; if not found,
1798 ignore. Also ignore if the value is already set. */
1799
1800 if (pw == NULL) break;
1801 Ustrcpy(name+Ustrlen(name)-4, "group");
1802 ol2 = find_option(name, oltop, last);
1803 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1804 (ol2->type & opt_mask) == opt_expand_gid))
1805 {
1806 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1807 if (! *set_flag)
1808 {
1809 if (data_block == NULL)
1810 *((gid_t *)(ol2->value)) = pw->pw_gid;
1811 else
5903c6ff 1812 *((gid_t *)(US data_block + (long int)(ol2->value))) = pw->pw_gid;
059ec3d9
PH
1813 *set_flag = TRUE;
1814 }
1815 }
1816 break;
1817
1818 /* If it was an expanded gid, see if there is any expansion to be
1819 done by checking for the presence of a $ character. If there is, save it
1820 in the corresponding *expand_user option field. Otherwise, fall through
1821 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1822 of data. */
1823
1824 case opt_expand_gid:
1825 sprintf(CS name2, "*expand_%.50s", name);
1826 ol2 = find_option(name2, oltop, last);
1827 if (ol2 != NULL)
1828 {
1829 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1830
1831 if (data_block == NULL)
1832 *((uschar **)(ol2->value)) = ss;
1833 else
5903c6ff 1834 *((uschar **)(US data_block + (long int)(ol2->value))) = ss;
059ec3d9
PH
1835
1836 if (ss != NULL)
1837 {
1838 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1839 freesptr = FALSE;
1840 break;
1841 }
1842 }
1843
1844 /* Handle freestanding gid */
1845
1846 case opt_gid:
1847 if (!route_findgroup(sptr, &gid))
1848 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1849 if (data_block == NULL)
1850 *((gid_t *)(ol->value)) = gid;
1851 else
5903c6ff 1852 *((gid_t *)(US data_block + (long int)(ol->value))) = gid;
059ec3d9
PH
1853 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1854 break;
1855
1856 /* If it was a uid list, look up each individual entry, and build
1857 a vector of uids, with a count in the first element. Put the vector
1858 in malloc store so we can free the string. (We are reading into
1859 permanent store already.) */
1860
1861 case opt_uidlist:
1862 {
1863 int count = 1;
1864 uid_t *list;
1865 int ptr = 0;
55414b25
JH
1866 const uschar *p;
1867 const uschar *op = expand_string (sptr);
0925ede6
PH
1868
1869 if (op == NULL)
1870 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1871 name, expand_string_message);
059ec3d9 1872
0925ede6 1873 p = op;
059ec3d9 1874 if (*p != 0) count++;
0925ede6 1875 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
1876 list = store_malloc(count*sizeof(uid_t));
1877 list[ptr++] = (uid_t)(count - 1);
1878
1879 if (data_block == NULL)
1880 *((uid_t **)(ol->value)) = list;
1881 else
5903c6ff 1882 *((uid_t **)(US data_block + (long int)(ol->value))) = list;
059ec3d9 1883
0925ede6 1884 p = op;
059ec3d9
PH
1885 while (count-- > 1)
1886 {
1887 int sep = 0;
1888 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1889 if (!route_finduser(big_buffer, NULL, &uid))
1890 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1891 big_buffer);
1892 list[ptr++] = uid;
1893 }
1894 }
1895 break;
1896
1897 /* If it was a gid list, look up each individual entry, and build
1898 a vector of gids, with a count in the first element. Put the vector
1899 in malloc store so we can free the string. (We are reading into permanent
1900 store already.) */
1901
1902 case opt_gidlist:
1903 {
1904 int count = 1;
1905 gid_t *list;
1906 int ptr = 0;
55414b25
JH
1907 const uschar *p;
1908 const uschar *op = expand_string (sptr);
0925ede6
PH
1909
1910 if (op == NULL)
1911 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1912 name, expand_string_message);
059ec3d9 1913
0925ede6 1914 p = op;
059ec3d9 1915 if (*p != 0) count++;
0925ede6 1916 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
1917 list = store_malloc(count*sizeof(gid_t));
1918 list[ptr++] = (gid_t)(count - 1);
1919
1920 if (data_block == NULL)
1921 *((gid_t **)(ol->value)) = list;
1922 else
5903c6ff 1923 *((gid_t **)(US data_block + (long int)(ol->value))) = list;
059ec3d9 1924
0925ede6 1925 p = op;
059ec3d9
PH
1926 while (count-- > 1)
1927 {
1928 int sep = 0;
1929 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1930 if (!route_findgroup(big_buffer, &gid))
1931 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1932 big_buffer);
1933 list[ptr++] = gid;
1934 }
1935 }
1936 break;
1937 }
1938
1939 /* Release store if the value of the string doesn't need to be kept. */
1940
1941 if (freesptr) store_reset(reset_point);
1942 break;
1943
1944 /* Expanded boolean: if no characters follow, or if there are no dollar
1945 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1946 save the string for later expansion in the alternate place. */
1947
1948 case opt_expand_bool:
1949 if (*s != 0 && Ustrchr(s, '$') != 0)
1950 {
1951 sprintf(CS name2, "*expand_%.50s", name);
1952 ol2 = find_option(name2, oltop, last);
1953 if (ol2 != NULL)
1954 {
1955 reset_point = sptr = read_string(s, name);
1956 if (data_block == NULL)
1957 *((uschar **)(ol2->value)) = sptr;
1958 else
5903c6ff 1959 *((uschar **)(US data_block + (long int)(ol2->value))) = sptr;
059ec3d9
PH
1960 freesptr = FALSE;
1961 break;
1962 }
1963 }
1964 /* Fall through */
1965
1966 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1967 look for yes/not/true/false. Some booleans are stored in a single bit in
1968 a single int. There's a special fudge for verify settings; without a suffix
1969 they set both xx_sender and xx_recipient. The table points to the sender
1970 value; search subsequently for the recipient. There's another special case:
1971 opt_bool_set also notes when a boolean has been set. */
1972
1973 case opt_bool:
1974 case opt_bit:
1975 case opt_bool_verify:
1976 case opt_bool_set:
1977 if (*s != 0)
1978 {
1979 s = readconf_readname(name2, 64, s);
1980 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1981 boolvalue = TRUE;
1982 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1983 boolvalue = FALSE;
1984 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1985 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1986 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1987 US"for boolean option ", name);
1988 }
1989
1990 /* Handle single-bit type. */
1991
1992 if (type == opt_bit)
1993 {
1994 int bit = 1 << ((ol->type >> 16) & 31);
1995 int *ptr = (data_block == NULL)?
1996 (int *)(ol->value) :
5903c6ff 1997 (int *)(US data_block + (long int)ol->value);
059ec3d9
PH
1998 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1999 break;
2000 }
2001
2002 /* Handle full BOOL types */
2003
2004 if (data_block == NULL)
2005 *((BOOL *)(ol->value)) = boolvalue;
2006 else
5903c6ff 2007 *((BOOL *)(US data_block + (long int)(ol->value))) = boolvalue;
059ec3d9
PH
2008
2009 /* Verify fudge */
2010
2011 if (type == opt_bool_verify)
2012 {
2013 sprintf(CS name2, "%.50s_recipient", name + offset);
2014 ol2 = find_option(name2, oltop, last);
2015 if (ol2 != NULL)
2016 {
2017 if (data_block == NULL)
2018 *((BOOL *)(ol2->value)) = boolvalue;
2019 else
5903c6ff 2020 *((BOOL *)(US data_block + (long int)(ol2->value))) = boolvalue;
059ec3d9
PH
2021 }
2022 }
2023
2024 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2025
2026 else if (type == opt_bool_set)
2027 {
2028 sprintf(CS name2, "*set_%.50s", name + offset);
2029 ol2 = find_option(name2, oltop, last);
2030 if (ol2 != NULL)
2031 {
2032 if (data_block == NULL)
2033 *((BOOL *)(ol2->value)) = TRUE;
2034 else
5903c6ff 2035 *((BOOL *)(US data_block + (long int)(ol2->value))) = TRUE;
059ec3d9
PH
2036 }
2037 }
2038 break;
2039
2040 /* Octal integer */
2041
2042 case opt_octint:
2043 intbase = 8;
2044 inttype = US"octal ";
2045
2046 /* Integer: a simple(ish) case; allow octal and hex formats, and
dcb72db9 2047 suffixes K, M and G. The different types affect output, not input. */
059ec3d9
PH
2048
2049 case opt_mkint:
2050 case opt_int:
2051 {
2052 uschar *endptr;
7e8d92ba
PH
2053 long int lvalue;
2054
059ec3d9 2055 errno = 0;
7e8d92ba 2056 lvalue = strtol(CS s, CSS &endptr, intbase);
059ec3d9
PH
2057
2058 if (endptr == s)
2059 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2060 inttype, name);
2061
2062 if (errno != ERANGE)
059ec3d9
PH
2063 if (tolower(*endptr) == 'k')
2064 {
7e8d92ba
PH
2065 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
2066 else lvalue *= 1024;
059ec3d9
PH
2067 endptr++;
2068 }
2069 else if (tolower(*endptr) == 'm')
2070 {
7e8d92ba 2071 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
059ec3d9 2072 errno = ERANGE;
7e8d92ba 2073 else lvalue *= 1024*1024;
059ec3d9
PH
2074 endptr++;
2075 }
dcb72db9
JH
2076 else if (tolower(*endptr) == 'g')
2077 {
2078 if (lvalue > INT_MAX/(1024*1024*1024) || lvalue < INT_MIN/(1024*1024*1024))
2079 errno = ERANGE;
2080 else lvalue *= 1024*1024*1024;
2081 endptr++;
2082 }
059ec3d9 2083
7e8d92ba
PH
2084 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2085 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2086 "absolute value of integer \"%s\" is too large (overflow)", s);
059ec3d9
PH
2087
2088 while (isspace(*endptr)) endptr++;
2089 if (*endptr != 0)
2090 extra_chars_error(endptr, inttype, US"integer value for ", name);
7e8d92ba
PH
2091
2092 value = (int)lvalue;
059ec3d9
PH
2093 }
2094
2095 if (data_block == NULL)
2096 *((int *)(ol->value)) = value;
2097 else
5903c6ff 2098 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2099 break;
2100
dcb72db9
JH
2101 /* Integer held in K: again, allow octal and hex formats, and suffixes K, M
2102 and G. */
13559da6 2103 /*XXX consider moving to int_eximarith_t (but mind the overflow test 0415) */
059ec3d9
PH
2104
2105 case opt_Kint:
2106 {
2107 uschar *endptr;
2108 errno = 0;
2109 value = strtol(CS s, CSS &endptr, intbase);
2110
2111 if (endptr == s)
2112 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2113 inttype, name);
2114
2115 if (errno != ERANGE)
dcb72db9 2116 if (tolower(*endptr) == 'g')
059ec3d9 2117 {
dcb72db9
JH
2118 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
2119 errno = ERANGE;
2120 else
2121 value *= 1024*1024;
059ec3d9
PH
2122 endptr++;
2123 }
dcb72db9 2124 else if (tolower(*endptr) == 'm')
059ec3d9 2125 {
dcb72db9
JH
2126 if (value > INT_MAX/1024 || value < INT_MIN/1024)
2127 errno = ERANGE;
2128 else
2129 value *= 1024;
059ec3d9
PH
2130 endptr++;
2131 }
dcb72db9
JH
2132 else if (tolower(*endptr) == 'k')
2133 endptr++;
059ec3d9 2134 else
059ec3d9 2135 value = (value + 512)/1024;
059ec3d9
PH
2136
2137 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2138 "absolute value of integer \"%s\" is too large (overflow)", s);
2139
2140 while (isspace(*endptr)) endptr++;
2141 if (*endptr != 0)
2142 extra_chars_error(endptr, inttype, US"integer value for ", name);
2143 }
2144
2145 if (data_block == NULL)
2146 *((int *)(ol->value)) = value;
2147 else
5903c6ff 2148 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2149 break;
2150
2151 /* Fixed-point number: held to 3 decimal places. */
2152
2153 case opt_fixed:
2154 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2155 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2156 "fixed-point number expected for %s", name);
2157
2158 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2159 "integer \"%s\" is too large (overflow)", s);
2160
2161 value *= 1000;
2162
2163 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2164 "integer \"%s\" is too large (overflow)", s);
2165
76ac1b5b
JH
2166 /* We get a coverity error here for using count, as it derived
2167 from the tainted buffer pointed to by s, as parsed by sscanf().
4c04137d 2168 By the definition of sscanf we must be accessing between start
76ac1b5b
JH
2169 and end of s (assuming it is nul-terminated...) so ignore the error. */
2170 /* coverity[tainted_data] */
059ec3d9
PH
2171 if (s[count] == '.')
2172 {
2173 int d = 100;
2174 while (isdigit(s[++count]))
2175 {
2176 value += (s[count] - '0') * d;
2177 d /= 10;
2178 }
2179 }
2180
2181 while (isspace(s[count])) count++;
2182
2183 if (s[count] != 0)
2184 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2185
2186 if (data_block == NULL)
2187 *((int *)(ol->value)) = value;
2188 else
5903c6ff 2189 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2190 break;
2191
2192 /* There's a special routine to read time values. */
2193
2194 case opt_time:
2195 value = readconf_readtime(s, 0, FALSE);
2196 if (value < 0)
2197 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2198 name);
2199 if (data_block == NULL)
2200 *((int *)(ol->value)) = value;
2201 else
5903c6ff 2202 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2203 break;
2204
2205 /* A time list is a list of colon-separated times, with the first
2206 element holding the size of the list and the second the number of
2207 entries used. */
2208
2209 case opt_timelist:
2210 {
2211 int count = 0;
2212 int *list = (data_block == NULL)?
2213 (int *)(ol->value) :
5903c6ff 2214 (int *)(US data_block + (long int)(ol->value));
059ec3d9
PH
2215
2216 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2217 {
2218 int terminator = 0;
2219 uschar *snext = Ustrchr(s, ':');
2220 if (snext != NULL)
2221 {
2222 uschar *ss = snext;
2223 while (ss > s && isspace(ss[-1])) ss--;
2224 terminator = *ss;
2225 }
2226 value = readconf_readtime(s, terminator, FALSE);
2227 if (value < 0)
2228 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2229 name);
2230 if (count > 1 && value <= list[count])
2231 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2232 "time value out of order for %s", name);
2233 list[count+1] = value;
2234 if (snext == NULL) break;
2235 s = snext + 1;
2236 while (isspace(*s)) s++;
2237 }
2238
2239 if (count > list[0] - 2)
2240 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2241 name);
2242 if (count > 0 && list[2] == 0) count = 0;
2243 list[1] = count;
1ad6489e 2244 break;
059ec3d9
PH
2245 }
2246
1ad6489e
JH
2247 case opt_func:
2248 {
2249 void (*fn)() = ol->value;
2250 fn(name, s);
2251 break;
2252 }
059ec3d9
PH
2253 }
2254
2255return TRUE;
2256}
2257
2258
2259
2260/*************************************************
2261* Print a time value *
2262*************************************************/
2263
2264/*
2265Argument: a time value in seconds
2266Returns: pointer to a fixed buffer containing the time as a string,
2267 in readconf_readtime() format
2268*/
2269
2270uschar *
2271readconf_printtime(int t)
2272{
2273int s, m, h, d, w;
2274uschar *p = time_buffer;
2275
ea49d0e1
PH
2276if (t < 0)
2277 {
2278 *p++ = '-';
2279 t = -t;
2280 }
2281
059ec3d9
PH
2282s = t % 60;
2283t /= 60;
2284m = t % 60;
2285t /= 60;
2286h = t % 24;
2287t /= 24;
2288d = t % 7;
2289w = t/7;
2290
32dfdf8b
JH
2291if (w > 0) p += sprintf(CS p, "%dw", w);
2292if (d > 0) p += sprintf(CS p, "%dd", d);
2293if (h > 0) p += sprintf(CS p, "%dh", h);
2294if (m > 0) p += sprintf(CS p, "%dm", m);
059ec3d9
PH
2295if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2296
2297return time_buffer;
2298}
2299
2300
2301
2302/*************************************************
2303* Print an individual option value *
2304*************************************************/
2305
2306/* This is used by the -bP option, so prints to the standard output.
2307The entire options list is passed in as an argument, because some options come
2308in pairs - typically uid/gid settings, which can either be explicit numerical
2309values, or strings to be expanded later. If the numerical value is unset,
2310search for "*expand_<name>" to see if there is a string equivalent.
2311
2312Arguments:
2313 ol option entry, or NULL for an unknown option
2314 name option name
2315 options_block NULL for main configuration options; otherwise points to
2316 a driver block; if the option doesn't have opt_public
2317 set, then options_block->options_block is where the item
2318 resides.
2319 oltop points to the option list in which ol exists
2320 last one more than the offset of the last entry in optop
12f69989 2321 no_labels do not show "foo = " at the start.
059ec3d9
PH
2322
2323Returns: nothing
2324*/
2325
2326static void
2327print_ol(optionlist *ol, uschar *name, void *options_block,
12f69989 2328 optionlist *oltop, int last, BOOL no_labels)
059ec3d9
PH
2329{
2330struct passwd *pw;
2331struct group *gr;
2332optionlist *ol2;
2333void *value;
2334uid_t *uidlist;
2335gid_t *gidlist;
2336uschar *s;
2337uschar name2[64];
2338
2339if (ol == NULL)
2340 {
2341 printf("%s is not a known option\n", name);
2342 return;
2343 }
2344
2345/* Non-admin callers cannot see options that have been flagged secure by the
2346"hide" prefix. */
2347
2348if (!admin_user && (ol->type & opt_secure) != 0)
2349 {
12f69989
PP
2350 if (no_labels)
2351 printf("%s\n", hidden);
2352 else
2353 printf("%s = %s\n", name, hidden);
059ec3d9
PH
2354 return;
2355 }
2356
2357/* Else show the value of the option */
2358
2359value = ol->value;
2360if (options_block != NULL)
2361 {
2362 if ((ol->type & opt_public) == 0)
2363 options_block = (void *)(((driver_instance *)options_block)->options_block);
5903c6ff 2364 value = (void *)(US options_block + (long int)value);
059ec3d9
PH
2365 }
2366
2367switch(ol->type & opt_mask)
2368 {
2369 case opt_stringptr:
2370 case opt_rewrite: /* Show the text value */
2371 s = *((uschar **)value);
12f69989
PP
2372 if (!no_labels) printf("%s = ", name);
2373 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
059ec3d9
PH
2374 break;
2375
2376 case opt_int:
12f69989
PP
2377 if (!no_labels) printf("%s = ", name);
2378 printf("%d\n", *((int *)value));
059ec3d9
PH
2379 break;
2380
2381 case opt_mkint:
2382 {
2383 int x = *((int *)value);
2384 if (x != 0 && (x & 1023) == 0)
2385 {
2386 int c = 'K';
2387 x >>= 10;
2388 if ((x & 1023) == 0)
2389 {
2390 c = 'M';
2391 x >>= 10;
2392 }
12f69989
PP
2393 if (!no_labels) printf("%s = ", name);
2394 printf("%d%c\n", x, c);
2395 }
2396 else
2397 {
2398 if (!no_labels) printf("%s = ", name);
2399 printf("%d\n", x);
059ec3d9 2400 }
059ec3d9
PH
2401 }
2402 break;
2403
2404 case opt_Kint:
2405 {
2406 int x = *((int *)value);
12f69989
PP
2407 if (!no_labels) printf("%s = ", name);
2408 if (x == 0) printf("0\n");
2409 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2410 else printf("%dK\n", x);
059ec3d9
PH
2411 }
2412 break;
2413
2414 case opt_octint:
12f69989
PP
2415 if (!no_labels) printf("%s = ", name);
2416 printf("%#o\n", *((int *)value));
059ec3d9
PH
2417 break;
2418
2419 /* Can be negative only when "unset", in which case integer */
2420
2421 case opt_fixed:
2422 {
2423 int x = *((int *)value);
2424 int f = x % 1000;
2425 int d = 100;
2426 if (x < 0) printf("%s =\n", name); else
2427 {
12f69989
PP
2428 if (!no_labels) printf("%s = ", name);
2429 printf("%d.", x/1000);
059ec3d9
PH
2430 do
2431 {
2432 printf("%d", f/d);
2433 f %= d;
2434 d /= 10;
2435 }
2436 while (f != 0);
2437 printf("\n");
2438 }
2439 }
2440 break;
2441
2442 /* If the numerical value is unset, try for the string value */
2443
2444 case opt_expand_uid:
2445 if (! *get_set_flag(name, oltop, last, options_block))
2446 {
2447 sprintf(CS name2, "*expand_%.50s", name);
2448 ol2 = find_option(name2, oltop, last);
2449 if (ol2 != NULL)
2450 {
2451 void *value2 = ol2->value;
2452 if (options_block != NULL)
5903c6ff 2453 value2 = (void *)(US options_block + (long int)value2);
059ec3d9 2454 s = *((uschar **)value2);
12f69989
PP
2455 if (!no_labels) printf("%s = ", name);
2456 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2457 break;
2458 }
2459 }
2460
2461 /* Else fall through */
2462
2463 case opt_uid:
12f69989 2464 if (!no_labels) printf("%s = ", name);
059ec3d9 2465 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2466 printf("\n");
059ec3d9
PH
2467 else
2468 {
2469 pw = getpwuid(*((uid_t *)value));
2470 if (pw == NULL)
12f69989
PP
2471 printf("%ld\n", (long int)(*((uid_t *)value)));
2472 else printf("%s\n", pw->pw_name);
059ec3d9
PH
2473 }
2474 break;
2475
2476 /* If the numerical value is unset, try for the string value */
2477
2478 case opt_expand_gid:
2479 if (! *get_set_flag(name, oltop, last, options_block))
2480 {
2481 sprintf(CS name2, "*expand_%.50s", name);
2482 ol2 = find_option(name2, oltop, last);
2483 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2484 {
2485 void *value2 = ol2->value;
2486 if (options_block != NULL)
5903c6ff 2487 value2 = (void *)(US options_block + (long int)value2);
059ec3d9 2488 s = *((uschar **)value2);
12f69989
PP
2489 if (!no_labels) printf("%s = ", name);
2490 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2491 break;
2492 }
2493 }
2494
2495 /* Else fall through */
2496
2497 case opt_gid:
12f69989 2498 if (!no_labels) printf("%s = ", name);
059ec3d9 2499 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2500 printf("\n");
059ec3d9
PH
2501 else
2502 {
2503 gr = getgrgid(*((int *)value));
2504 if (gr == NULL)
12f69989
PP
2505 printf("%ld\n", (long int)(*((int *)value)));
2506 else printf("%s\n", gr->gr_name);
059ec3d9
PH
2507 }
2508 break;
2509
2510 case opt_uidlist:
2511 uidlist = *((uid_t **)value);
12f69989 2512 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2513 if (uidlist != NULL)
2514 {
2515 int i;
2516 uschar sep = ' ';
12f69989 2517 if (no_labels) sep = '\0';
059ec3d9
PH
2518 for (i = 1; i <= (int)(uidlist[0]); i++)
2519 {
2520 uschar *name = NULL;
2521 pw = getpwuid(uidlist[i]);
2522 if (pw != NULL) name = US pw->pw_name;
12f69989
PP
2523 if (sep != '\0') printf("%c", sep);
2524 if (name != NULL) printf("%s", name);
2525 else printf("%ld", (long int)(uidlist[i]));
059ec3d9
PH
2526 sep = ':';
2527 }
2528 }
2529 printf("\n");
2530 break;
2531
2532 case opt_gidlist:
2533 gidlist = *((gid_t **)value);
12f69989 2534 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2535 if (gidlist != NULL)
2536 {
2537 int i;
2538 uschar sep = ' ';
12f69989 2539 if (no_labels) sep = '\0';
059ec3d9
PH
2540 for (i = 1; i <= (int)(gidlist[0]); i++)
2541 {
2542 uschar *name = NULL;
2543 gr = getgrgid(gidlist[i]);
2544 if (gr != NULL) name = US gr->gr_name;
12f69989
PP
2545 if (sep != '\0') printf("%c", sep);
2546 if (name != NULL) printf("%s", name);
2547 else printf("%ld", (long int)(gidlist[i]));
059ec3d9
PH
2548 sep = ':';
2549 }
2550 }
2551 printf("\n");
2552 break;
2553
2554 case opt_time:
12f69989
PP
2555 if (!no_labels) printf("%s = ", name);
2556 printf("%s\n", readconf_printtime(*((int *)value)));
059ec3d9
PH
2557 break;
2558
2559 case opt_timelist:
2560 {
2561 int i;
2562 int *list = (int *)value;
12f69989 2563 if (!no_labels) printf("%s = ", name);
059ec3d9
PH
2564 for (i = 0; i < list[1]; i++)
2565 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2566 printf("\n");
2567 }
2568 break;
2569
2570 case opt_bit:
2571 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2572 "" : "no_", name);
2573 break;
2574
2575 case opt_expand_bool:
2576 sprintf(CS name2, "*expand_%.50s", name);
2577 ol2 = find_option(name2, oltop, last);
2578 if (ol2 != NULL && ol2->value != NULL)
2579 {
2580 void *value2 = ol2->value;
2581 if (options_block != NULL)
5903c6ff 2582 value2 = (void *)(US options_block + (long int)value2);
059ec3d9
PH
2583 s = *((uschar **)value2);
2584 if (s != NULL)
2585 {
12f69989
PP
2586 if (!no_labels) printf("%s = ", name);
2587 printf("%s\n", string_printing(s));
059ec3d9
PH
2588 break;
2589 }
2590 /* s == NULL => string not set; fall through */
2591 }
2592
2593 /* Fall through */
2594
2595 case opt_bool:
2596 case opt_bool_verify:
2597 case opt_bool_set:
2598 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2599 break;
2600 }
2601}
2602
2603
2604
2605/*************************************************
2606* Print value from main configuration *
2607*************************************************/
2608
2609/* This function, called as a result of encountering the -bP option,
2610causes the value of any main configuration variable to be output if the
2611second argument is NULL. There are some special values:
2612
2613 all print all main configuration options
44f6c01d
HSHR
2614 config_file print the name of the configuration file
2615 (configure_file will still work, for backward
2616 compatibility)
059ec3d9
PH
2617 routers print the routers' configurations
2618 transports print the transports' configuration
2619 authenticators print the authenticators' configuration
5d9c27ec 2620 macros print the macros' configuration
059ec3d9
PH
2621 router_list print a list of router names
2622 transport_list print a list of transport names
2623 authenticator_list print a list of authentication mechanism names
5d9c27ec 2624 macro_list print a list of macro names
059ec3d9
PH
2625 +name print a named list item
2626 local_scan print the local_scan options
bf3c2c6b 2627 config print the configuration as it is parsed
bc3c7bb7 2628 environment print the used execution environment
059ec3d9 2629
5d9c27ec
TK
2630If the second argument is not NULL, it must be one of "router", "transport",
2631"authenticator" or "macro" in which case the first argument identifies the
2632driver whose options are to be printed.
059ec3d9
PH
2633
2634Arguments:
2635 name option name if type == NULL; else driver name
2636 type NULL or driver type name, as described above
12f69989 2637 no_labels avoid the "foo = " at the start of an item
059ec3d9
PH
2638
2639Returns: nothing
2640*/
2641
2642void
12f69989 2643readconf_print(uschar *name, uschar *type, BOOL no_labels)
059ec3d9
PH
2644{
2645BOOL names_only = FALSE;
2646optionlist *ol;
2647optionlist *ol2 = NULL;
2648driver_instance *d = NULL;
5d9c27ec 2649macro_item *m;
059ec3d9
PH
2650int size = 0;
2651
2652if (type == NULL)
2653 {
2654 if (*name == '+')
2655 {
2656 int i;
2657 tree_node *t;
2658 BOOL found = FALSE;
2659 static uschar *types[] = { US"address", US"domain", US"host",
2660 US"localpart" };
2661 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2662 &hostlist_anchor, &localpartlist_anchor };
2663
2664 for (i = 0; i < 4; i++)
2665 {
2666 t = tree_search(*(anchors[i]), name+1);
2667 if (t != NULL)
2668 {
2669 found = TRUE;
12f69989
PP
2670 if (no_labels)
2671 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2672 else
2673 printf("%slist %s = %s\n", types[i], name+1,
2674 ((namedlist_block *)(t->data.ptr))->string);
059ec3d9
PH
2675 }
2676 }
2677
2678 if (!found)
2679 printf("no address, domain, host, or local part list called \"%s\" "
2680 "exists\n", name+1);
2681
2682 return;
2683 }
2684
d7bed771
JH
2685 if ( Ustrcmp(name, "configure_file") == 0
2686 || Ustrcmp(name, "config_file") == 0)
059ec3d9
PH
2687 {
2688 printf("%s\n", CS config_main_filename);
2689 return;
2690 }
2691
2692 if (Ustrcmp(name, "all") == 0)
2693 {
2694 for (ol = optionlist_config;
c0b9d3e8 2695 ol < optionlist_config + nelem(optionlist_config); ol++)
059ec3d9
PH
2696 {
2697 if ((ol->type & opt_hidden) == 0)
12f69989 2698 print_ol(ol, US ol->name, NULL,
c0b9d3e8 2699 optionlist_config, nelem(optionlist_config),
12f69989 2700 no_labels);
059ec3d9
PH
2701 }
2702 return;
2703 }
2704
2705 if (Ustrcmp(name, "local_scan") == 0)
2706 {
2707 #ifndef LOCAL_SCAN_HAS_OPTIONS
2708 printf("local_scan() options are not supported\n");
2709 #else
2710 for (ol = local_scan_options;
2711 ol < local_scan_options + local_scan_options_count; ol++)
2712 {
2713 print_ol(ol, US ol->name, NULL, local_scan_options,
12f69989 2714 local_scan_options_count, no_labels);
059ec3d9
PH
2715 }
2716 #endif
2717 return;
2718 }
2719
bf3c2c6b
HSHR
2720 if (Ustrcmp(name, "config") == 0)
2721 {
3257ed4b 2722 print_config(admin_user, no_labels);
bf3c2c6b
HSHR
2723 return;
2724 }
2725
059ec3d9
PH
2726 if (Ustrcmp(name, "routers") == 0)
2727 {
2728 type = US"router";
2729 name = NULL;
2730 }
2731 else if (Ustrcmp(name, "transports") == 0)
2732 {
2733 type = US"transport";
2734 name = NULL;
2735 }
2736
2737 else if (Ustrcmp(name, "authenticators") == 0)
2738 {
2739 type = US"authenticator";
2740 name = NULL;
2741 }
2742
5d9c27ec 2743 else if (Ustrcmp(name, "macros") == 0)
059ec3d9 2744 {
5d9c27ec 2745 type = US"macro";
059ec3d9 2746 name = NULL;
059ec3d9
PH
2747 }
2748
2749 else if (Ustrcmp(name, "router_list") == 0)
2750 {
2751 type = US"router";
2752 name = NULL;
2753 names_only = TRUE;
2754 }
5d9c27ec 2755
059ec3d9
PH
2756 else if (Ustrcmp(name, "transport_list") == 0)
2757 {
2758 type = US"transport";
2759 name = NULL;
2760 names_only = TRUE;
2761 }
5d9c27ec
TK
2762
2763 else if (Ustrcmp(name, "authenticator_list") == 0)
2764 {
2765 type = US"authenticator";
2766 name = NULL;
2767 names_only = TRUE;
2768 }
2769
2770 else if (Ustrcmp(name, "macro_list") == 0)
2771 {
2772 type = US"macro";
2773 name = NULL;
2774 names_only = TRUE;
2775 }
2776
bc3c7bb7
HSHR
2777 else if (Ustrcmp(name, "environment") == 0)
2778 {
2779 if (environ)
2780 {
77560253 2781 uschar ** p;
bc3c7bb7 2782 for (p = USS environ; *p; p++) ;
84bbb4d8 2783 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
bc3c7bb7
HSHR
2784
2785 for (p = USS environ; *p; p++)
2786 {
77560253
JH
2787 uschar * q;
2788 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
f2cb6292 2789 puts(CS *p);
bc3c7bb7
HSHR
2790 }
2791 }
2792 return;
2793 }
2794
059ec3d9
PH
2795 else
2796 {
c0b9d3e8
JH
2797 print_ol(find_option(name, optionlist_config, nelem(optionlist_config)),
2798 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
059ec3d9
PH
2799 return;
2800 }
2801 }
2802
2803/* Handle the options for a router or transport. Skip options that are flagged
2804as hidden. Some of these are options with names starting with '*', used for
2805internal alternative representations of other options (which the printing
2806function will sort out). Others are synonyms kept for backward compatibility.
2807*/
2808
2809if (Ustrcmp(type, "router") == 0)
2810 {
2811 d = (driver_instance *)routers;
2812 ol2 = optionlist_routers;
2813 size = optionlist_routers_size;
2814 }
2815else if (Ustrcmp(type, "transport") == 0)
2816 {
2817 d = (driver_instance *)transports;
2818 ol2 = optionlist_transports;
2819 size = optionlist_transports_size;
2820 }
2821else if (Ustrcmp(type, "authenticator") == 0)
2822 {
2823 d = (driver_instance *)auths;
2824 ol2 = optionlist_auths;
2825 size = optionlist_auths_size;
2826 }
2827
5d9c27ec
TK
2828else if (Ustrcmp(type, "macro") == 0)
2829 {
2830 /* People store passwords in macros and they were previously not available
2831 for printing. So we have an admin_users restriction. */
2832 if (!admin_user)
2833 {
2834 fprintf(stderr, "exim: permission denied\n");
2835 exit(EXIT_FAILURE);
2836 }
165acdd1 2837
c193398d 2838 if (name)
165acdd1
JH
2839 if ((m = macro_search(name)))
2840 macro_print(m->tnode.name, m->tnode.data.ptr, (void *)(long)names_only);
2841 else
2842 printf("%s %s not found\n", type, name);
2843 else
2844 tree_walk(tree_macros, macro_print, (void *)(long)names_only);
2845
5d9c27ec
TK
2846 return;
2847 }
2848
059ec3d9
PH
2849if (names_only)
2850 {
165acdd1 2851 for (; d; d = d->next) printf("%s\n", CS d->name);
059ec3d9
PH
2852 return;
2853 }
2854
2855/* Either search for a given driver, or print all of them */
2856
165acdd1 2857for (; d; d = d->next)
059ec3d9 2858 {
165acdd1 2859 if (!name)
059ec3d9 2860 printf("\n%s %s:\n", d->name, type);
165acdd1
JH
2861 else if (Ustrcmp(d->name, name) != 0)
2862 continue;
059ec3d9
PH
2863
2864 for (ol = ol2; ol < ol2 + size; ol++)
059ec3d9 2865 if ((ol->type & opt_hidden) == 0)
12f69989 2866 print_ol(ol, US ol->name, d, ol2, size, no_labels);
059ec3d9
PH
2867
2868 for (ol = d->info->options;
2869 ol < d->info->options + *(d->info->options_count); ol++)
059ec3d9 2870 if ((ol->type & opt_hidden) == 0)
12f69989 2871 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
165acdd1
JH
2872
2873 if (name) return;
059ec3d9 2874 }
165acdd1 2875if (name) printf("%s %s not found\n", type, name);
059ec3d9
PH
2876}
2877
2878
2879
2880/*************************************************
2881* Read a named list item *
2882*************************************************/
2883
2884/* This function reads a name and a list (i.e. string). The name is used to
2885save the list in a tree, sorted by its name. Each entry also has a number,
2886which can be used for caching tests, but if the string contains any expansion
2887items other than $key, the number is set negative to inhibit caching. This
2888mechanism is used for domain, host, and address lists that are referenced by
2889the "+name" syntax.
2890
2891Arguments:
2892 anchorp points to the tree anchor
2893 numberp points to the current number for this tree
2894 max the maximum number permitted
2895 s the text of the option line, starting immediately after the name
2896 of the list type
2897 tname the name of the list type, for messages
2898
2899Returns: nothing
2900*/
2901
2902static void
2903read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2904 uschar *tname)
2905{
2906BOOL forcecache = FALSE;
2907uschar *ss;
2908tree_node *t;
2909namedlist_block *nb = store_get(sizeof(namedlist_block));
2910
2911if (Ustrncmp(s, "_cache", 6) == 0)
2912 {
2913 forcecache = TRUE;
2914 s += 6;
2915 }
2916
2917if (!isspace(*s))
2918 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2919
2920if (*numberp >= max)
2921 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2922 tname, max);
2923
2924while (isspace(*s)) s++;
2925ss = s;
2926while (isalnum(*s) || *s == '_') s++;
2927t = store_get(sizeof(tree_node) + s-ss);
2928Ustrncpy(t->name, ss, s-ss);
2929t->name[s-ss] = 0;
2930while (isspace(*s)) s++;
2931
2932if (!tree_insertnode(anchorp, t))
2933 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2934 "duplicate name \"%s\" for a named %s", t->name, tname);
2935
2936t->data.ptr = nb;
2937nb->number = *numberp;
2938*numberp += 1;
2939
2940if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2941 "missing '=' after \"%s\"", t->name);
2942while (isspace(*s)) s++;
2943nb->string = read_string(s, t->name);
2944nb->cache_data = NULL;
2945
2946/* Check the string for any expansions; if any are found, mark this list
2947uncacheable unless the user has explicited forced caching. */
2948
2949if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2950}
2951
2952
2953
2954
2955/*************************************************
2956* Unpick data for a rate limit *
2957*************************************************/
2958
2959/* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2960separate values.
2961
2962Arguments:
2963 s string, in the form t,b,f,l
2964 where t is the threshold (integer)
2965 b is the initial delay (time)
2966 f is the multiplicative factor (fixed point)
2967 k is the maximum time (time)
2968 threshold where to store threshold
2969 base where to store base in milliseconds
2970 factor where to store factor in milliseconds
2971 limit where to store limit
2972
2973Returns: nothing (panics on error)
2974*/
2975
2976static void
2977unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2978 int *limit)
2979{
2980uschar bstring[16], lstring[16];
2981
2982if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2983 factor, lstring) == 4)
2984 {
2985 *base = readconf_readtime(bstring, 0, TRUE);
2986 *limit = readconf_readtime(lstring, 0, TRUE);
2987 if (*base >= 0 && *limit >= 0) return;
2988 }
2989log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2990}
2991
2992
2993
2994
2995/*************************************************
3375e053
PP
2996* Drop privs for checking TLS config *
2997*************************************************/
2998
2999/* We want to validate TLS options during readconf, but do not want to be
3000root when we call into the TLS library, in case of library linkage errors
3001which cause segfaults; before this check, those were always done as the Exim
3002runtime user and it makes sense to continue with that.
3003
3004Assumes: tls_require_ciphers has been set, if it will be
3005 exim_user has been set, if it will be
3006 exim_group has been set, if it will be
3007
3008Returns: bool for "okay"; false will cause caller to immediately exit.
3009*/
3010
3011#ifdef SUPPORT_TLS
3012static BOOL
34e86e20 3013tls_dropprivs_validate_require_cipher(BOOL nowarn)
3375e053
PP
3014{
3015const uschar *errmsg;
3016pid_t pid;
3017int rc, status;
3018void (*oldsignal)(int);
3019
23f3dc67
JH
3020/* If TLS will never be used, no point checking ciphers */
3021
3022if ( !tls_advertise_hosts
3023 || !*tls_advertise_hosts
3024 || Ustrcmp(tls_advertise_hosts, ":") == 0
3025 )
3026 return TRUE;
34e86e20 3027else if (!nowarn && !tls_certificate)
23bb6982
JH
3028 log_write(0, LOG_MAIN,
3029 "Warning: No server certificate defined; will use a selfsigned one.\n"
23f3dc67
JH
3030 " Suggested action: either install a certificate or change tls_advertise_hosts option");
3031
3375e053
PP
3032oldsignal = signal(SIGCHLD, SIG_DFL);
3033
3034fflush(NULL);
3035if ((pid = fork()) < 0)
3036 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
3037
3038if (pid == 0)
3039 {
1d7a353e
PP
3040 /* in some modes, will have dropped privilege already */
3041 if (!geteuid())
3042 exim_setugid(exim_uid, exim_gid, FALSE,
3043 US"calling tls_validate_require_cipher");
3375e053 3044
cf0c6164 3045 if ((errmsg = tls_validate_require_cipher()))
3375e053
PP
3046 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3047 "tls_require_ciphers invalid: %s", errmsg);
3375e053
PP
3048 fflush(NULL);
3049 _exit(0);
3050 }
3051
3052do {
3053 rc = waitpid(pid, &status, 0);
3054} while (rc < 0 && errno == EINTR);
3055
9d26b8c0 3056DEBUG(D_tls)
3375e053
PP
3057 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
3058 (int)pid, status);
3059
3060signal(SIGCHLD, oldsignal);
3061
3062return status == 0;
3063}
3064#endif /* SUPPORT_TLS */
3065
3066
3067
3068
3069/*************************************************
059ec3d9
PH
3070* Read main configuration options *
3071*************************************************/
3072
3073/* This function is the first to be called for configuration reading. It
3074opens the configuration file and reads general configuration settings until
3075it reaches the end of the configuration section. The file is then left open so
3076that the remaining configuration data can subsequently be read if needed for
3077this run of Exim.
3078
3079The configuration file must be owned either by root or exim, and be writeable
3080only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3081in the config file, so the test is done on the compiled in values. A slight
3082anomaly, to be carefully documented.
3083
3084The name of the configuration file is taken from a list that is included in the
3085binary of Exim. It can be altered from the command line, but if that is done,
3086root privilege is immediately withdrawn unless the caller is root or exim.
3087The first file on the list that exists is used.
3088
3089For use on multiple systems that share file systems, first look for a
3090configuration file whose name has the current node name on the end. If that is
3091not found, try the generic name. For really contorted configurations, that run
3092multiple Exims with different uid settings, first try adding the effective uid
3093before the node name. These complications are going to waste resources on most
3094systems. Therefore they are available only when requested by compile-time
3095options. */
3096
3097void
34e86e20 3098readconf_main(BOOL nowarn)
059ec3d9
PH
3099{
3100int sep = 0;
3101struct stat statbuf;
3102uschar *s, *filename;
55414b25 3103const uschar *list = config_main_filelist;
059ec3d9
PH
3104
3105/* Loop through the possible file names */
3106
8e6c4db1 3107while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
059ec3d9 3108 {
bc3c7bb7 3109
059ec3d9
PH
3110 /* Cut out all the fancy processing unless specifically wanted */
3111
3112 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3113 uschar *suffix = filename + Ustrlen(filename);
3114
3115 /* Try for the node-specific file if a node name exists */
3116
3117 #ifdef CONFIGURE_FILE_USE_NODE
3118 struct utsname uts;
3119 if (uname(&uts) >= 0)
3120 {
3121 #ifdef CONFIGURE_FILE_USE_EUID
3122 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3123 config_file = Ufopen(filename, "rb");
3124 if (config_file == NULL)
3125 #endif /* CONFIGURE_FILE_USE_EUID */
3126 {
3127 sprintf(CS suffix, ".%.256s", uts.nodename);
3128 config_file = Ufopen(filename, "rb");
3129 }
3130 }
3131 #endif /* CONFIGURE_FILE_USE_NODE */
3132
3133 /* Otherwise, try the generic name, possibly with the euid added */
3134
3135 #ifdef CONFIGURE_FILE_USE_EUID
3136 if (config_file == NULL)
3137 {
3138 sprintf(CS suffix, ".%ld", (long int)original_euid);
3139 config_file = Ufopen(filename, "rb");
3140 }
3141 #endif /* CONFIGURE_FILE_USE_EUID */
3142
3143 /* Finally, try the unadorned name */
3144
3145 if (config_file == NULL)
3146 {
3147 *suffix = 0;
3148 config_file = Ufopen(filename, "rb");
3149 }
3150 #else /* if neither defined */
3151
3152 /* This is the common case when the fancy processing is not included. */
3153
3154 config_file = Ufopen(filename, "rb");
3155 #endif
3156
3157 /* If the file does not exist, continue to try any others. For any other
3158 error, break out (and die). */
3159
3160 if (config_file != NULL || errno != ENOENT) break;
3161 }
3162
3163/* On success, save the name for verification; config_filename is used when
3164logging configuration errors (it changes for .included files) whereas
3165config_main_filename is the name shown by -bP. Failure to open a configuration
3166file is a serious disaster. */
3167
8e7e1357 3168if (config_file)
059ec3d9 3169 {
8e7e1357 3170 uschar *last_slash = Ustrrchr(filename, '/');
059ec3d9 3171 config_filename = config_main_filename = string_copy(filename);
98b8312f 3172
8e7e1357
HSHR
3173 /* The config_main_directory we need for the $config_dir expansion.
3174 config_main_filename we need for $config_file expansion.
29f67888
HSHR
3175 And config_dir is the directory of the current configuration, used for
3176 relative .includes. We do need to know it's name, as we change our working
3177 directory later. */
3178
3179 if (filename[0] == '/')
8e7e1357 3180 config_main_directory = last_slash == filename ? US"/" : string_copyn(filename, last_slash - filename);
29f67888
HSHR
3181 else
3182 {
3183 /* relative configuration file name: working dir + / + basename(filename) */
3184
863bd541 3185 uschar buf[PATH_MAX];
acec9514 3186 gstring * g;
29f67888 3187
863bd541 3188 if (os_getcwd(buf, PATH_MAX) == NULL)
29f67888
HSHR
3189 {
3190 perror("exim: getcwd");
3191 exit(EXIT_FAILURE);
3192 }
acec9514 3193 g = string_cat(NULL, buf);
29f67888
HSHR
3194
3195 /* If the dir does not end with a "/", append one */
acec9514
JH
3196 if (g->s[g->ptr-1] != '/')
3197 g = string_catn(g, US"/", 1);
29f67888
HSHR
3198
3199 /* If the config file contains a "/", extract the directory part */
8e7e1357 3200 if (last_slash)
acec9514 3201 g = string_catn(g, filename, last_slash - filename);
8e7e1357 3202
acec9514 3203 config_main_directory = string_from_gstring(g);
29f67888
HSHR
3204 }
3205 config_directory = config_main_directory;
059ec3d9
PH
3206 }
3207else
3208 {
3209 if (filename == NULL)
3210 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3211 "%s", config_main_filelist);
3212 else
3213 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3214 "configuration file %s", filename));
3215 }
3216
29f67888
HSHR
3217/* Now, once we found and opened our configuration file, we change the directory
3218to a safe place. Later we change to $spool_directory. */
3219
3220if (Uchdir("/") < 0)
3221 {
3222 perror("exim: chdir `/': ");
3223 exit(EXIT_FAILURE);
3224 }
3225
e2f5dc15 3226/* Check the status of the file we have opened, if we have retained root
fea24b2e 3227privileges and the file isn't /dev/null (which *should* be 0666). */
059ec3d9 3228
fea24b2e 3229if (trusted_config && Ustrcmp(filename, US"/dev/null"))
059ec3d9
PH
3230 {
3231 if (fstat(fileno(config_file), &statbuf) != 0)
3232 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3233 big_buffer);
3234
c1d94452 3235 if ((statbuf.st_uid != root_uid /* owner not root */
059ec3d9
PH
3236 #ifdef CONFIGURE_OWNER
3237 && statbuf.st_uid != config_uid /* owner not the special one */
3238 #endif
3239 ) || /* or */
c1d94452 3240 (statbuf.st_gid != root_gid /* group not root & */
35edf2ff
PH
3241 #ifdef CONFIGURE_GROUP
3242 && statbuf.st_gid != config_gid /* group not the special one */
8e669ac1 3243 #endif
35edf2ff 3244 && (statbuf.st_mode & 020) != 0) || /* group writeable */
059ec3d9
PH
3245 /* or */
3246 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3247
3248 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3249 "wrong owner, group, or mode", big_buffer);
3250 }
3251
3252/* Process the main configuration settings. They all begin with a lower case
3253letter. If we see something starting with an upper case letter, it is taken as
3254a macro definition. */
3255
5bfe3b35 3256while ((s = get_config_line()))
059ec3d9 3257 {
af542dcf
HSHR
3258 if (config_lineno == 1 && Ustrstr(s, "\xef\xbb\xbf") == s)
3259 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3260 "found unexpected BOM (Byte Order Mark)");
3261
9650d98a
JH
3262 if (isupper(s[0]))
3263 { if (!macro_read_assignment(s)) exim_exit(EXIT_FAILURE, US""); }
059ec3d9
PH
3264
3265 else if (Ustrncmp(s, "domainlist", 10) == 0)
3266 read_named_list(&domainlist_anchor, &domainlist_count,
3267 MAX_NAMED_LIST, s+10, US"domain list");
3268
3269 else if (Ustrncmp(s, "hostlist", 8) == 0)
3270 read_named_list(&hostlist_anchor, &hostlist_count,
3271 MAX_NAMED_LIST, s+8, US"host list");
3272
3273 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3274 read_named_list(&addresslist_anchor, &addresslist_count,
3275 MAX_NAMED_LIST, s+11, US"address list");
3276
3277 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3278 read_named_list(&localpartlist_anchor, &localpartlist_count,
3279 MAX_NAMED_LIST, s+13, US"local part list");
3280
3281 else
3282 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3283 NULL, US"main option \"%s\" unknown");
3284 }
3285
3286
3287/* If local_sender_retain is set, local_from_check must be unset. */
3288
3289if (local_sender_retain && local_from_check)
3290 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3291 "local_sender_retain are set; this combination is not allowed");
3292
3293/* If the timezone string is empty, set it to NULL, implying no TZ variable
3294wanted. */
3295
3296if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3297
944a9c55
PH
3298/* The max retry interval must not be greater than 24 hours. */
3299
3300if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3301
059ec3d9
PH
3302/* remote_max_parallel must be > 0 */
3303
3304if (remote_max_parallel <= 0) remote_max_parallel = 1;
3305
6a3f1455
PH
3306/* Save the configured setting of freeze_tell, so we can re-instate it at the
3307start of a new SMTP message. */
3308
3309freeze_tell_config = freeze_tell;
3310
059ec3d9
PH
3311/* The primary host name may be required for expansion of spool_directory
3312and log_file_path, so make sure it is set asap. It is obtained from uname(),
3313but if that yields an unqualified value, make a FQDN by using gethostbyname to
3314canonize it. Some people like upper case letters in their host names, so we
3315don't force the case. */
3316
3317if (primary_hostname == NULL)
3318 {
55414b25 3319 const uschar *hostname;
059ec3d9
PH
3320 struct utsname uts;
3321 if (uname(&uts) < 0)
3322 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3323 hostname = US uts.nodename;
3324
3325 if (Ustrchr(hostname, '.') == NULL)
3326 {
3327 int af = AF_INET;
3328 struct hostent *hostdata;
3329
3330 #if HAVE_IPV6
7e66e54d 3331 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
55414b25
JH
3332 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3333 MCL_DOMAIN, TRUE, NULL) != OK))
059ec3d9
PH
3334 af = AF_INET6;
3335 #else
3336 af = AF_INET;
3337 #endif
3338
3339 for (;;)
3340 {
3341 #if HAVE_IPV6
3342 #if HAVE_GETIPNODEBYNAME
3343 int error_num;
3344 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3345 #else
3346 hostdata = gethostbyname2(CS hostname, af);
3347 #endif
3348 #else
3349 hostdata = gethostbyname(CS hostname);
3350 #endif
3351
3352 if (hostdata != NULL)
3353 {
3354 hostname = US hostdata->h_name;
3355 break;
3356 }
3357
3358 if (af == AF_INET) break;
3359 af = AF_INET;
3360 }
3361 }
3362
3363 primary_hostname = string_copy(hostname);
3364 }
3365
3366/* Set up default value for smtp_active_hostname */
3367
3368smtp_active_hostname = primary_hostname;
3369
3370/* If spool_directory wasn't set in the build-time configuration, it must have
3371got set above. Of course, writing to the log may not work if log_file_path is
3372not set, but it will at least get to syslog or somewhere, with any luck. */
3373
3374if (*spool_directory == 0)
3375 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3376 "proceed");
3377
3378/* Expand the spool directory name; it may, for example, contain the primary
3379host name. Same comment about failure. */
3380
3381s = expand_string(spool_directory);
3382if (s == NULL)
3383 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3384 "\"%s\": %s", spool_directory, expand_string_message);
3385spool_directory = s;
3386
3387/* Expand log_file_path, which must contain "%s" in any component that isn't
f1e5fef5
PP
3388the null string or "syslog". It is also allowed to contain one instance of %D
3389or %M. However, it must NOT contain % followed by anything else. */
059ec3d9
PH
3390
3391if (*log_file_path != 0)
3392 {
55414b25 3393 const uschar *ss, *sss;
059ec3d9
PH
3394 int sep = ':'; /* Fixed for log file path */
3395 s = expand_string(log_file_path);
3396 if (s == NULL)
3397 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3398 "\"%s\": %s", log_file_path, expand_string_message);
3399
3400 ss = s;
3401 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3402 {
3403 uschar *t;
3404 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3405 t = Ustrstr(sss, "%s");
3406 if (t == NULL)
3407 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3408 "contain \"%%s\"", sss);
3409 *t = 'X';
3410 t = Ustrchr(sss, '%');
3411 if (t != NULL)
3412 {
f1e5fef5 3413 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
059ec3d9
PH
3414 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3415 "unexpected \"%%\" character", s);
3416 }
3417 }
3418
3419 log_file_path = s;
3420 }
3421
3422/* Interpret syslog_facility into an integer argument for 'ident' param to
3423openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3424leading "log_". */
3425
5bfe3b35 3426if (syslog_facility_str)
059ec3d9
PH
3427 {
3428 int i;
3429 uschar *s = syslog_facility_str;
3430
3431 if ((Ustrlen(syslog_facility_str) >= 4) &&
3432 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3433 s += 4;
3434
3435 for (i = 0; i < syslog_list_size; i++)
059ec3d9
PH
3436 if (strcmpic(s, syslog_list[i].name) == 0)
3437 {
3438 syslog_facility = syslog_list[i].value;
3439 break;
3440 }
059ec3d9
PH
3441
3442 if (i >= syslog_list_size)
059ec3d9
PH
3443 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3444 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
059ec3d9
PH
3445 }
3446
3447/* Expand pid_file_path */
3448
3449if (*pid_file_path != 0)
3450 {
5bfe3b35 3451 if (!(s = expand_string(pid_file_path)))
059ec3d9
PH
3452 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3453 "\"%s\": %s", pid_file_path, expand_string_message);
3454 pid_file_path = s;
3455 }
3456
921b12ca
TF
3457/* Set default value of process_log_path */
3458
5bfe3b35 3459if (!process_log_path || *process_log_path =='\0')
921b12ca
TF
3460 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3461
059ec3d9
PH
3462/* Compile the regex for matching a UUCP-style "From_" line in an incoming
3463message. */
3464
3465regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3466
3467/* Unpick the SMTP rate limiting options, if set */
3468
5bfe3b35 3469if (smtp_ratelimit_mail)
059ec3d9
PH
3470 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3471 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
059ec3d9 3472
5bfe3b35 3473if (smtp_ratelimit_rcpt)
059ec3d9
PH
3474 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3475 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
059ec3d9
PH
3476
3477/* The qualify domains default to the primary host name */
3478
5bfe3b35 3479if (!qualify_domain_sender)
059ec3d9 3480 qualify_domain_sender = primary_hostname;
5bfe3b35 3481if (!qualify_domain_recipient)
059ec3d9
PH
3482 qualify_domain_recipient = qualify_domain_sender;
3483
3484/* Setting system_filter_user in the configuration sets the gid as well if a
3485name is given, but a numerical value does not. */
3486
3487if (system_filter_uid_set && !system_filter_gid_set)
3488 {
3489 struct passwd *pw = getpwuid(system_filter_uid);
5bfe3b35 3490 if (!pw)
059ec3d9
PH
3491 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3492 (long int)system_filter_uid);
3493 system_filter_gid = pw->pw_gid;
3494 system_filter_gid_set = TRUE;
3495 }
3496
3497/* If the errors_reply_to field is set, check that it is syntactically valid
3498and ensure it contains a domain. */
3499
5bfe3b35 3500if (errors_reply_to)
059ec3d9
PH
3501 {
3502 uschar *errmess;
3503 int start, end, domain;
3504 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3505 &start, &end, &domain, FALSE);
3506
5bfe3b35 3507 if (!recipient)
059ec3d9
PH
3508 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3509 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3510
3511 if (domain == 0)
3512 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3513 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3514 }
3515
3516/* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3517smtp_accept_max must also be set. */
3518
3519if (smtp_accept_max == 0 &&
3520 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3521 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3522 "smtp_accept_max must be set if smtp_accept_queue or "
3523 "smtp_accept_max_per_host is set");
3524
3525/* Set up the host number if anything is specified. It is an expanded string
3526so that it can be computed from the host name, for example. We do this last
3527so as to ensure that everything else is set up before the expansion. */
3528
5bfe3b35 3529if (host_number_string)
059ec3d9 3530 {
ef840681 3531 long int n;
059ec3d9
PH
3532 uschar *end;
3533 uschar *s = expand_string(host_number_string);
5bfe3b35
JH
3534
3535 if (!s)
ef840681
PP
3536 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3537 "failed to expand localhost_number \"%s\": %s",
3538 host_number_string, expand_string_message);
3539 n = Ustrtol(s, &end, 0);
059ec3d9
PH
3540 while (isspace(*end)) end++;
3541 if (*end != 0)
3542 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3543 "localhost_number value is not a number: %s", s);
3544 if (n > LOCALHOST_MAX)
3545 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3546 "localhost_number is greater than the maximum allowed value (%d)",
3547 LOCALHOST_MAX);
3548 host_number = n;
3549 }
3550
3551#ifdef SUPPORT_TLS
3552/* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3553
5bfe3b35 3554if ((tls_verify_hosts || tls_try_verify_hosts) && !tls_verify_certificates)
059ec3d9
PH
3555 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3556 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
5bfe3b35 3557 tls_verify_hosts ? "" : "try_");
77bb000f 3558
3375e053
PP
3559/* This also checks that the library linkage is working and we can call
3560routines in it, so call even if tls_require_ciphers is unset */
34e86e20 3561if (!tls_dropprivs_validate_require_cipher(nowarn))
3375e053
PP
3562 exit(1);
3563
3564/* Magic number: at time of writing, 1024 has been the long-standing value
3565used by so many clients, and what Exim used to use always, that it makes
3566sense to just min-clamp this max-clamp at that. */
3567if (tls_dh_max_bits < 1024)
3568 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3569 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3570
77bb000f 3571/* If openssl_options is set, validate it */
7006ee24 3572if (openssl_options)
77bb000f
PP
3573 {
3574# ifdef USE_GNUTLS
3575 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3576 "openssl_options is set but we're using GnuTLS");
77bb000f
PP
3577# else
3578 long dummy;
7006ee24 3579 if (!tls_openssl_options_parse(openssl_options, &dummy))
77bb000f 3580 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3581 "openssl_options parse error: %s", openssl_options);
77bb000f
PP
3582# endif
3583 }
32d07012 3584#endif /*SUPPORT_TLS*/
bc3c7bb7 3585
34e86e20 3586if (!nowarn && !keep_environment && environ && *environ)
bc3c7bb7 3587 log_write(0, LOG_MAIN,
8e58ed80
HSHR
3588 "Warning: purging the environment.\n"
3589 " Suggested action: use keep_environment.");
059ec3d9
PH
3590}
3591
3592
3593
3594/*************************************************
3595* Initialize one driver *
3596*************************************************/
3597
3598/* This is called once the driver's generic options, if any, have been read.
3599We can now find the driver, set up defaults for the private options, and
3600unset any "set" bits in the private options table (which might have been
3601set by another incarnation of the same driver).
3602
3603Arguments:
3604 d pointer to driver instance block, with generic
3605 options filled in
3606 drivers_available vector of available drivers
3607 size_of_info size of each block in drivers_available
3608 class class of driver, for error message
3609
3610Returns: pointer to the driver info block
3611*/
3612
3613static driver_info *
3614init_driver(driver_instance *d, driver_info *drivers_available,
3615 int size_of_info, uschar *class)
3616{
3617driver_info *dd;
3618
3619for (dd = drivers_available; dd->driver_name[0] != 0;
5903c6ff 3620 dd = (driver_info *)((US dd) + size_of_info))
059ec3d9
PH
3621 {
3622 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3623 {
3624 int i;
3625 int len = dd->options_len;
3626 d->info = dd;
3627 d->options_block = store_get(len);
3628 memcpy(d->options_block, dd->options_block, len);
3629 for (i = 0; i < *(dd->options_count); i++)
3630 dd->options[i].type &= ~opt_set;
3631 return dd;
3632 }
3633 }
3634
3635log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3636 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3637
3638return NULL; /* never obeyed */
3639}
3640
3641
3642
3643
3644/*************************************************
3645* Initialize driver list *
3646*************************************************/
3647
3648/* This function is called for routers, transports, and authentication
3649mechanisms. It reads the data from the current point in the configuration file
3650up to the end of the section, and sets up a chain of instance blocks according
3651to the file's contents. The file will already have been opened by a call to
3652readconf_main, and must be left open for subsequent reading of further data.
3653
3654Any errors cause a panic crash. Note that the blocks with names driver_info and
3655driver_instance must map the first portions of all the _info and _instance
3656blocks for this shared code to work.
3657
3658Arguments:
3659 class "router", "transport", or "authenticator"
3660 anchor &routers, &transports, &auths
3661 drivers_available available drivers
3662 size_of_info size of each info block
3663 instance_default points to default data for an instance
3664 instance_size size of instance block
3665 driver_optionlist generic option list
3666 driver_optionlist_count count of generic option list
3667
3668Returns: nothing
3669*/
3670
3671void
3672readconf_driver_init(
3673 uschar *class,
3674 driver_instance **anchor,
3675 driver_info *drivers_available,
3676 int size_of_info,
3677 void *instance_default,
3678 int instance_size,
3679 optionlist *driver_optionlist,
3680 int driver_optionlist_count)
3681{
3682driver_instance **p = anchor;
3683driver_instance *d = NULL;
3684uschar *buffer;
3685
059ec3d9
PH
3686while ((buffer = get_config_line()) != NULL)
3687 {
3688 uschar name[64];
cf00dad6 3689 uschar *s;
059ec3d9 3690
cf00dad6
PH
3691 /* Read the first name on the line and test for the start of a new driver. A
3692 macro definition indicates the end of the previous driver. If this isn't the
3693 start of a new driver, the line will be re-read. */
059ec3d9