Follow CNAME chains only one step. Bug 2264
[exim.git] / src / src / readconf.c
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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
f9ba5e22 5/* Copyright (c) University of Cambridge 1995 - 2018 */
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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 },
d8d9f930 126 { "dns_cname_loops", opt_int, &dns_cname_loops },
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127 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
128 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
83712b39 129 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
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130 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
131 { "dns_retrans", opt_time, &dns_retrans },
132 { "dns_retry", opt_int, &dns_retry },
9820a77f 133 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
e97d1f08 134 { "dns_use_edns0", opt_int, &dns_use_edns0 },
4c04137d 135 /* This option is now a no-op, retained for compatibility */
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136 { "drop_cr", opt_bool, &drop_cr },
137/*********************************************************/
6c1c3d1d 138 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
0e22dfd1 139 { "dsn_from", opt_stringptr, &dsn_from },
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140 { "envelope_to_remove", opt_bool, &envelope_to_remove },
141 { "errors_copy", opt_stringptr, &errors_copy },
142 { "errors_reply_to", opt_stringptr, &errors_reply_to },
0cbf2b82 143#ifndef DISABLE_EVENT
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144 { "event_action", opt_stringptr, &event_action },
145#endif
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146 { "exim_group", opt_gid, &exim_gid },
147 { "exim_path", opt_stringptr, &exim_path },
148 { "exim_user", opt_uid, &exim_uid },
149 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
150 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
151 { "finduser_retries", opt_int, &finduser_retries },
152 { "freeze_tell", opt_stringptr, &freeze_tell },
153 { "gecos_name", opt_stringptr, &gecos_name },
154 { "gecos_pattern", opt_stringptr, &gecos_pattern },
83da1223 155#ifdef SUPPORT_TLS
2519e60d 156 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
e6060e2c 157 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
83da1223 158#endif
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159 { "header_line_maxsize", opt_int, &header_line_maxsize },
160 { "header_maxsize", opt_int, &header_maxsize },
161 { "headers_charset", opt_stringptr, &headers_charset },
162 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
163 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
164 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
165 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
166 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
167 { "hold_domains", opt_stringptr, &hold_domains },
168 { "host_lookup", opt_stringptr, &host_lookup },
169 { "host_lookup_order", opt_stringptr, &host_lookup_order },
170 { "host_reject_connection", opt_stringptr, &host_reject_connection },
171 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
cee5f132 172#ifdef SUPPORT_PROXY
7a2fa0bc 173 { "hosts_proxy", opt_stringptr, &hosts_proxy },
cee5f132 174#endif
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175 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
176#ifdef LOOKUP_IBASE
177 { "ibase_servers", opt_stringptr, &ibase_servers },
178#endif
179 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
180 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
181 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
bc3c7bb7 182 { "keep_environment", opt_stringptr, &keep_environment },
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183 { "keep_malformed", opt_time, &keep_malformed },
184#ifdef LOOKUP_LDAP
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185 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
186 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
187 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
188 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
189 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
059ec3d9 190 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
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191 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
192 { "ldap_start_tls", opt_bool, &eldap_start_tls },
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193 { "ldap_version", opt_int, &eldap_version },
194#endif
195 { "local_from_check", opt_bool, &local_from_check },
196 { "local_from_prefix", opt_stringptr, &local_from_prefix },
197 { "local_from_suffix", opt_stringptr, &local_from_suffix },
198 { "local_interfaces", opt_stringptr, &local_interfaces },
9723f966 199#ifdef HAVE_LOCAL_SCAN
059ec3d9 200 { "local_scan_timeout", opt_time, &local_scan_timeout },
9723f966 201#endif
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202 { "local_sender_retain", opt_bool, &local_sender_retain },
203 { "localhost_number", opt_stringptr, &host_number_string },
204 { "log_file_path", opt_stringptr, &log_file_path },
205 { "log_selector", opt_stringptr, &log_selector_string },
206 { "log_timezone", opt_bool, &log_timezone },
207 { "lookup_open_max", opt_int, &lookup_open_max },
208 { "max_username_length", opt_int, &max_username_length },
ddea74fa 209 { "message_body_newlines", opt_bool, &message_body_newlines },
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210 { "message_body_visible", opt_mkint, &message_body_visible },
211 { "message_id_header_domain", opt_stringptr, &message_id_domain },
212 { "message_id_header_text", opt_stringptr, &message_id_text },
213 { "message_logs", opt_bool, &message_logs },
214 { "message_size_limit", opt_stringptr, &message_size_limit },
215#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
216 { "move_frozen_messages", opt_bool, &move_frozen_messages },
217#endif
218 { "mua_wrapper", opt_bool, &mua_wrapper },
219#ifdef LOOKUP_MYSQL
220 { "mysql_servers", opt_stringptr, &mysql_servers },
221#endif
222 { "never_users", opt_uidlist, &never_users },
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223#ifdef SUPPORT_TLS
224 { "openssl_options", opt_stringptr, &openssl_options },
225#endif
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226#ifdef LOOKUP_ORACLE
227 { "oracle_servers", opt_stringptr, &oracle_servers },
228#endif
229 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
230#ifdef EXIM_PERL
231 { "perl_at_start", opt_bool, &opt_perl_at_start },
232 { "perl_startup", opt_stringptr, &opt_perl_startup },
2f680c0c 233 { "perl_taintmode", opt_bool, &opt_perl_taintmode },
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234#endif
235#ifdef LOOKUP_PGSQL
236 { "pgsql_servers", opt_stringptr, &pgsql_servers },
237#endif
238 { "pid_file_path", opt_stringptr, &pid_file_path },
239 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
8ccd00b1 240#ifndef DISABLE_PRDR
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241 { "prdr_enable", opt_bool, &prdr_enable },
242#endif
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243 { "preserve_message_logs", opt_bool, &preserve_message_logs },
244 { "primary_hostname", opt_stringptr, &primary_hostname },
245 { "print_topbitchars", opt_bool, &print_topbitchars },
246 { "process_log_path", opt_stringptr, &process_log_path },
247 { "prod_requires_admin", opt_bool, &prod_requires_admin },
248 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
249 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
250 { "queue_domains", opt_stringptr, &queue_domains },
251 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
252 { "queue_only", opt_bool, &queue_only },
253 { "queue_only_file", opt_stringptr, &queue_only_file },
254 { "queue_only_load", opt_fixed, &queue_only_load },
8669f003 255 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
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256 { "queue_only_override", opt_bool, &queue_only_override },
257 { "queue_run_in_order", opt_bool, &queue_run_in_order },
0cd5fd23 258 { "queue_run_max", opt_stringptr, &queue_run_max },
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259 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
260 { "receive_timeout", opt_time, &receive_timeout },
261 { "received_header_text", opt_stringptr, &received_header_text },
262 { "received_headers_max", opt_int, &received_headers_max },
263 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
264 { "recipients_max", opt_int, &recipients_max },
265 { "recipients_max_reject", opt_bool, &recipients_max_reject },
de78e2d5 266#ifdef LOOKUP_REDIS
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267 { "redis_servers", opt_stringptr, &redis_servers },
268#endif
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269 { "remote_max_parallel", opt_int, &remote_max_parallel },
270 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
271 { "retry_data_expire", opt_time, &retry_data_expire },
272 { "retry_interval_max", opt_time, &retry_interval_max },
273 { "return_path_remove", opt_bool, &return_path_remove },
274 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
275 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
276 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
277 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
846430d9 278 { "slow_lookup_log", opt_int, &slow_lookup_log },
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279 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
280 { "smtp_accept_max", opt_int, &smtp_accept_max },
281 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
282 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
283 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
284 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
285 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
286 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
287 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
288 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
289 { "smtp_banner", opt_stringptr, &smtp_banner },
290 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
291 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
292 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
293 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
294 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
295 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
296 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
297 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
298 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
299 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
300 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
1ad6489e 301 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
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302 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
303 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
8c5d388a 304#ifdef SUPPORT_I18N
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305 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
306#endif
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307#ifdef WITH_CONTENT_SCAN
308 { "spamd_address", opt_stringptr, &spamd_address },
309#endif
7952eef9 310#ifdef SUPPORT_SPF
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311 { "spf_guess", opt_stringptr, &spf_guess },
312#endif
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313 { "split_spool_directory", opt_bool, &split_spool_directory },
314 { "spool_directory", opt_stringptr, &spool_directory },
328c5688 315 { "spool_wireformat", opt_bool, &spool_wireformat },
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316#ifdef LOOKUP_SQLITE
317 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
318#endif
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319#ifdef EXPERIMENTAL_SRS
320 { "srs_config", opt_stringptr, &srs_config },
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321 { "srs_hashlength", opt_int, &srs_hashlength },
322 { "srs_hashmin", opt_int, &srs_hashmin },
323 { "srs_maxage", opt_int, &srs_maxage },
324 { "srs_secrets", opt_stringptr, &srs_secrets },
325 { "srs_usehash", opt_bool, &srs_usehash },
326 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
8523533c 327#endif
38a0a95f 328 { "strict_acl_vars", opt_bool, &strict_acl_vars },
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329 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
330 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
331 { "syslog_duplication", opt_bool, &syslog_duplication },
332 { "syslog_facility", opt_stringptr, &syslog_facility_str },
2333e06f 333 { "syslog_pid", opt_bool, &syslog_pid },
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334 { "syslog_processname", opt_stringptr, &syslog_processname },
335 { "syslog_timestamp", opt_bool, &syslog_timestamp },
336 { "system_filter", opt_stringptr, &system_filter },
337 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
338 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
339 { "system_filter_group", opt_gid, &system_filter_gid },
340 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
341 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
342 { "system_filter_user", opt_uid, &system_filter_uid },
343 { "tcp_nodelay", opt_bool, &tcp_nodelay },
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344#ifdef USE_TCP_WRAPPERS
345 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
346#endif
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347 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
348 { "timezone", opt_stringptr, &timezone_string },
059ec3d9 349 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
23f3dc67 350#ifdef SUPPORT_TLS
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351 { "tls_certificate", opt_stringptr, &tls_certificate },
352 { "tls_crl", opt_stringptr, &tls_crl },
3375e053 353 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
059ec3d9 354 { "tls_dhparam", opt_stringptr, &tls_dhparam },
10ca4f1c 355 { "tls_eccurve", opt_stringptr, &tls_eccurve },
f2de3a33 356# ifndef DISABLE_OCSP
3f7eeb86 357 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
817d9f57
JH
358# endif
359 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
059ec3d9
PH
360 { "tls_privatekey", opt_stringptr, &tls_privatekey },
361 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
362 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
363 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
364 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
365 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
366#endif
367 { "trusted_groups", opt_gidlist, &trusted_groups },
368 { "trusted_users", opt_uidlist, &trusted_users },
369 { "unknown_login", opt_stringptr, &unknown_login },
370 { "unknown_username", opt_stringptr, &unknown_username },
371 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
372 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
373 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
374 { "warn_message_file", opt_stringptr, &warn_message_file },
375 { "write_rejectlog", opt_bool, &write_rejectlog }
376};
377
cab0c277 378#ifndef MACRO_PREDEF
d7bed771 379static int optionlist_config_size = nelem(optionlist_config);
cab0c277 380#endif
059ec3d9
PH
381
382
d185889f
JH
383#ifdef MACRO_PREDEF
384
385static void fn_smtp_receive_timeout(const uschar * name, const uschar * str) {/*Dummy*/}
386
387void
388options_main(void)
389{
390options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN", NULL);
391}
392
393void
394options_auths(void)
395{
396struct auth_info * ai;
397uschar buf[64];
398
399options_from_list(optionlist_auths, optionlist_auths_size, US"AUTHENTICATORS", NULL);
400
401for (ai = auths_available; ai->driver_name[0]; ai++)
402 {
cab0c277 403 spf(buf, sizeof(buf), US"_DRIVER_AUTHENTICATOR_%T", ai->driver_name);
d185889f
JH
404 builtin_macro_create(buf);
405 options_from_list(ai->options, (unsigned)*ai->options_count, US"AUTHENTICATOR", ai->driver_name);
406 }
407}
408
409
410#else /*!MACRO_PREDEF*/
411
412extern char **environ;
413
414static void save_config_line(const uschar* line);
415static void save_config_position(const uschar *file, int line);
416static void print_config(BOOL admin, BOOL terse);
417
418
419#define CSTATE_STACK_SIZE 10
420
421const uschar *config_directory = NULL;
422
423
424/* Structure for chain (stack) of .included files */
425
426typedef struct config_file_item {
427 struct config_file_item *next;
428 const uschar *filename;
429 const uschar *directory;
430 FILE *file;
431 int lineno;
432} config_file_item;
433
434/* Structure for chain of configuration lines (-bP config) */
435
436typedef struct config_line_item {
437 struct config_line_item *next;
438 uschar *line;
439} config_line_item;
440
441static config_line_item* config_lines;
442
443/* Structure of table of conditional words and their state transitions */
444
445typedef struct cond_item {
446 uschar *name;
447 int namelen;
448 int action1;
449 int action2;
450 int pushpop;
451} cond_item;
452
453/* Structure of table of syslog facility names and values */
454
455typedef struct syslog_fac_item {
456 uschar *name;
457 int value;
458} syslog_fac_item;
459
460/* constants */
461static const char * const hidden = "<value not displayable>";
462
463/* Static variables */
464
465static config_file_item *config_file_stack = NULL; /* For includes */
466
467static uschar *syslog_facility_str = NULL;
468static uschar next_section[24];
469static uschar time_buffer[24];
470
471/* State variables for conditional loading (.ifdef / .else / .endif) */
472
473static int cstate = 0;
474static int cstate_stack_ptr = -1;
475static int cstate_stack[CSTATE_STACK_SIZE];
476
477/* Table of state transitions for handling conditional inclusions. There are
478four possible state transitions:
479
480 .ifdef true
481 .ifdef false
482 .elifdef true (or .else)
483 .elifdef false
484
485.endif just causes the previous cstate to be popped off the stack */
486
487static int next_cstate[3][4] =
488 {
489 /* State 0: reading from file, or reading until next .else or .endif */
490 { 0, 1, 2, 2 },
491 /* State 1: condition failed, skipping until next .else or .endif */
492 { 2, 2, 0, 1 },
493 /* State 2: skipping until .endif */
494 { 2, 2, 2, 2 },
495 };
496
497/* Table of conditionals and the states to set. For each name, there are four
498values: the length of the name (to save computing it each time), the state to
499set if a macro was found in the line, the state to set if a macro was not found
500in the line, and a stack manipulation setting which is:
501
502 -1 pull state value off the stack
503 0 don't alter the stack
504 +1 push value onto stack, before setting new state
505*/
506
507static cond_item cond_list[] = {
508 { US"ifdef", 5, 0, 1, 1 },
509 { US"ifndef", 6, 1, 0, 1 },
510 { US"elifdef", 7, 2, 3, 0 },
511 { US"elifndef", 8, 3, 2, 0 },
512 { US"else", 4, 2, 2, 0 },
513 { US"endif", 5, 0, 0, -1 }
514};
515
516static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
517
518/* Table of syslog facility names and their values */
519
520static syslog_fac_item syslog_list[] = {
521 { US"mail", LOG_MAIL },
522 { US"user", LOG_USER },
523 { US"news", LOG_NEWS },
524 { US"uucp", LOG_UUCP },
525 { US"local0", LOG_LOCAL0 },
526 { US"local1", LOG_LOCAL1 },
527 { US"local2", LOG_LOCAL2 },
528 { US"local3", LOG_LOCAL3 },
529 { US"local4", LOG_LOCAL4 },
530 { US"local5", LOG_LOCAL5 },
531 { US"local6", LOG_LOCAL6 },
532 { US"local7", LOG_LOCAL7 },
533 { US"daemon", LOG_DAEMON }
534};
535
536static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
537
538
539
059ec3d9
PH
540
541/*************************************************
542* Find the name of an option *
543*************************************************/
544
545/* This function is to aid debugging. Various functions take arguments that are
546pointer variables in the options table or in option tables for various drivers.
547For debugging output, it is useful to be able to find the name of the option
548which is currently being processed. This function finds it, if it exists, by
549searching the table(s).
550
551Arguments: a value that is presumed to be in the table above
552Returns: the option name, or an empty string
553*/
554
555uschar *
556readconf_find_option(void *p)
557{
558int i;
559router_instance *r;
560transport_instance *t;
561
c0b9d3e8 562for (i = 0; i < nelem(optionlist_config); i++)
059ec3d9
PH
563 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
564
d7bed771 565for (r = routers; r; r = r->next)
059ec3d9
PH
566 {
567 router_info *ri = r->info;
c4b738a9 568 for (i = 0; i < *ri->options_count; i++)
059ec3d9
PH
569 {
570 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
5903c6ff 571 if (p == CS (r->options_block) + (long int)(ri->options[i].value))
059ec3d9
PH
572 return US ri->options[i].name;
573 }
574 }
575
d7bed771 576for (t = transports; t; t = t->next)
059ec3d9
PH
577 {
578 transport_info *ti = t->info;
c4b738a9 579 for (i = 0; i < *ti->options_count; i++)
059ec3d9 580 {
c4b738a9
JH
581 optionlist * op = &ti->options[i];
582 if ((op->type & opt_mask) != opt_stringptr) continue;
583 if (p == ( op->type & opt_public
5903c6ff
JH
584 ? CS t
585 : CS t->options_block
c4b738a9
JH
586 )
587 + (long int)op->value)
588 return US op->name;
059ec3d9
PH
589 }
590 }
591
592return US"";
593}
594
595
596
597
1a7c9a48
JH
598/*************************************************
599* Deal with an assignment to a macro *
600*************************************************/
601
602/* We have a new definition; append to the list.
603
604Args:
85e03244
JH
605 name Name of the macro; will be copied
606 val Expansion result for the macro; will be copied
1a7c9a48
JH
607*/
608
609macro_item *
610macro_create(const uschar * name, const uschar * val, BOOL command_line)
611{
612macro_item * m = store_get(sizeof(macro_item));
613
614/* fprintf(stderr, "%s: '%s' '%s'\n", __FUNCTION__, name, val); */
615m->next = NULL;
616m->command_line = command_line;
617m->namelen = Ustrlen(name);
618m->replen = Ustrlen(val);
85e03244
JH
619m->name = string_copy(name);
620m->replacement = string_copy(val);
1a7c9a48
JH
621if (mlast)
622 mlast->next = m;
623else
624 macros = m;
625mlast = m;
85e03244
JH
626if (!macros_user)
627 macros_user = m;
1a7c9a48
JH
628return m;
629}
630
631
cf00dad6
PH
632/* This function is called when a line that starts with an upper case letter is
633encountered. The argument "line" should contain a complete logical line, and
634start with the first letter of the macro name. The macro name and the
635replacement text are extracted and stored. Redefinition of existing,
636non-command line, macros is permitted using '==' instead of '='.
637
638Arguments:
639 s points to the start of the logical line
640
9650d98a 641Returns: FALSE iff fatal error
cf00dad6
PH
642*/
643
9650d98a
JH
644BOOL
645macro_read_assignment(uschar *s)
cf00dad6
PH
646{
647uschar name[64];
648int namelen = 0;
649BOOL redef = FALSE;
650macro_item *m;
cf00dad6
PH
651
652while (isalnum(*s) || *s == '_')
653 {
654 if (namelen >= sizeof(name) - 1)
9650d98a
JH
655 {
656 log_write(0, LOG_PANIC|LOG_CONFIG_IN,
ef840681 657 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
9650d98a
JH
658 return FALSE;
659 }
cf00dad6
PH
660 name[namelen++] = *s++;
661 }
662name[namelen] = 0;
663
664while (isspace(*s)) s++;
665if (*s++ != '=')
9650d98a
JH
666 {
667 log_write(0, LOG_PANIC|LOG_CONFIG_IN, "malformed macro definition");
668 return FALSE;
669 }
cf00dad6
PH
670
671if (*s == '=')
672 {
673 redef = TRUE;
674 s++;
675 }
676while (isspace(*s)) s++;
677
678/* If an existing macro of the same name was defined on the command line, we
679just skip this definition. It's an error to attempt to redefine a macro without
680redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
681It is also an error to define a macro whose name begins with the name of a
1a7c9a48
JH
682previously defined macro. This is the requirement that make using a tree
683for macros hard; we must check all macros for the substring. Perhaps a
684sorted list, and a bsearch, would work?
c193398d 685Note: it is documented that the other way round works. */
cf00dad6 686
1a7c9a48 687for (m = macros; m; m = m->next)
cf00dad6 688 {
1a7c9a48 689 if (Ustrcmp(m->name, name) == 0)
9650d98a 690 {
1a7c9a48
JH
691 if (!m->command_line && !redef)
692 {
693 log_write(0, LOG_CONFIG|LOG_PANIC, "macro \"%s\" is already "
f04f9047 694 "defined (use \"==\" if you want to redefine it)", name);
1a7c9a48
JH
695 return FALSE;
696 }
697 break;
165acdd1 698 }
1a7c9a48
JH
699
700 if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
165acdd1 701 {
1a7c9a48
JH
702 log_write(0, LOG_CONFIG|LOG_PANIC, "\"%s\" cannot be defined as "
703 "a macro because previously defined macro \"%s\" is a substring",
704 name, m->name);
9650d98a
JH
705 return FALSE;
706 }
cf00dad6 707
1a7c9a48
JH
708 /* We cannot have this test, because it is documented that a substring
709 macro is permitted (there is even an example).
710 *
711 * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
712 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
713 * "a macro because it is a substring of previously defined macro \"%s\"",
714 * name, m->name);
715 */
cf00dad6
PH
716 }
717
1a7c9a48
JH
718/* Check for an overriding command-line definition. */
719
720if (m && m->command_line) return TRUE;
721
cf00dad6
PH
722/* Redefinition must refer to an existing macro. */
723
724if (redef)
c193398d 725 if (m)
b8f899cf
JH
726 {
727 m->replen = Ustrlen(s);
1a7c9a48 728 m->replacement = string_copy(s);
b8f899cf 729 }
c193398d 730 else
9650d98a
JH
731 {
732 log_write(0, LOG_CONFIG|LOG_PANIC, "can't redefine an undefined macro "
cf00dad6 733 "\"%s\"", name);
9650d98a
JH
734 return FALSE;
735 }
cf00dad6 736
c193398d 737/* We have a new definition. */
cf00dad6 738else
85e03244 739 (void) macro_create(name, s, FALSE);
9650d98a 740return TRUE;
8e6c4db1
JH
741}
742
743
cf00dad6
PH
744
745
059ec3d9 746
9650d98a
JH
747/* Process line for macros. The line is in big_buffer starting at offset len.
748Expand big_buffer if needed. Handle definitions of new macros, and
85e03244 749macro expansions, rewriting the line in the buffer.
9650d98a
JH
750
751Arguments:
752 len Offset in buffer of start of line
753 newlen Pointer to offset of end of line, updated on return
754 macro_found Pointer to return that a macro was expanded
755
756Return: pointer to first nonblank char in line
757*/
758
759uschar *
760macros_expand(int len, int * newlen, BOOL * macro_found)
761{
762uschar * ss = big_buffer + len;
763uschar * s;
1a7c9a48 764macro_item * m;
9650d98a
JH
765
766/* Find the true start of the physical line - leading spaces are always
767ignored. */
768
769while (isspace(*ss)) ss++;
770
771/* Process the physical line for macros. If this is the start of the logical
772line, skip over initial text at the start of the line if it starts with an
773upper case character followed by a sequence of name characters and an equals
774sign, because that is the definition of a new macro, and we don't do
775replacement therein. */
776
777s = ss;
778if (len == 0 && isupper(*s))
779 {
780 while (isalnum(*s) || *s == '_') s++;
781 while (isspace(*s)) s++;
782 if (*s != '=') s = ss; /* Not a macro definition */
783 }
784
1a7c9a48
JH
785/* Skip leading chars which cannot start a macro name, to avoid multiple
786pointless rescans in Ustrstr calls. */
787
85e03244 788while (*s && !isupper(*s) && !(*s == '_' && isupper(s[1]))) s++;
1a7c9a48
JH
789
790/* For each defined macro, scan the line (from after XXX= if present),
791replacing all occurrences of the macro. */
9650d98a
JH
792
793*macro_found = FALSE;
85e03244 794if (*s) for (m = *s == '_' ? macros : macros_user; m; m = m->next)
9650d98a 795 {
1a7c9a48 796 uschar * p, *pp;
85e03244
JH
797 uschar * t;
798
799 while (*s && !isupper(*s) && !(*s == '_' && isupper(s[1]))) s++;
800 if (!*s) break;
9650d98a 801
85e03244 802 t = s;
1a7c9a48
JH
803 while ((p = Ustrstr(t, m->name)) != NULL)
804 {
805 int moveby;
9650d98a 806
1a7c9a48
JH
807/* fprintf(stderr, "%s: matched '%s' in '%s'\n", __FUNCTION__, m->name, ss); */
808 /* Expand the buffer if necessary */
9650d98a 809
1a7c9a48
JH
810 while (*newlen - m->namelen + m->replen + 1 > big_buffer_size)
811 {
812 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
813 uschar *newbuffer = store_malloc(newsize);
814 memcpy(newbuffer, big_buffer, *newlen + 1);
815 p = newbuffer + (p - big_buffer);
816 s = newbuffer + (s - big_buffer);
817 ss = newbuffer + (ss - big_buffer);
818 t = newbuffer + (t - big_buffer);
819 big_buffer_size = newsize;
820 store_free(big_buffer);
821 big_buffer = newbuffer;
822 }
165acdd1 823
1a7c9a48
JH
824 /* Shuffle the remaining characters up or down in the buffer before
825 copying in the replacement text. Don't rescan the replacement for this
826 same macro. */
165acdd1 827
1a7c9a48
JH
828 pp = p + m->namelen;
829 if ((moveby = m->replen - m->namelen) != 0)
830 {
831 memmove(p + m->replen, pp, (big_buffer + *newlen) - pp + 1);
832 *newlen += moveby;
9650d98a 833 }
1a7c9a48
JH
834 Ustrncpy(p, m->replacement, m->replen);
835 t = p + m->replen;
85e03244 836 while (*t && !isupper(*t) && !(*t == '_' && isupper(t[1]))) t++;
1a7c9a48 837 *macro_found = TRUE;
9650d98a
JH
838 }
839 }
840
841/* An empty macro replacement at the start of a line could mean that ss no
842longer points to the first non-blank character. */
843
844while (isspace(*ss)) ss++;
845return ss;
846}
847
059ec3d9
PH
848/*************************************************
849* Read configuration line *
850*************************************************/
851
852/* A logical line of text is read from the configuration file into the big
853buffer, taking account of macros, .includes, and continuations. The size of
854big_buffer is increased if necessary. The count of configuration lines is
855maintained. Physical input lines starting with # (ignoring leading white space,
856and after macro replacement) and empty logical lines are always ignored.
857Leading and trailing spaces are removed.
858
859If we hit a line of the form "begin xxxx", the xxxx is placed in the
860next_section vector, and the function returns NULL, indicating the end of a
861configuration section. On end-of-file, NULL is returned with next_section
862empty.
863
864Arguments: none
865
866Returns: a pointer to the first non-blank in the line,
867 or NULL if eof or end of section is reached
868*/
869
870static uschar *
871get_config_line(void)
872{
873int startoffset = 0; /* To first non-blank char in logical line */
874int len = 0; /* Of logical line so far */
875int newlen;
876uschar *s, *ss;
059ec3d9
PH
877BOOL macro_found;
878
879/* Loop for handling continuation lines, skipping comments, and dealing with
880.include files. */
881
882for (;;)
883 {
884 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
885 {
886 if (config_file_stack != NULL) /* EOF inside .include */
887 {
f1e894f3 888 (void)fclose(config_file);
059ec3d9
PH
889 config_file = config_file_stack->file;
890 config_filename = config_file_stack->filename;
29f67888 891 config_directory = config_file_stack->directory;
059ec3d9
PH
892 config_lineno = config_file_stack->lineno;
893 config_file_stack = config_file_stack->next;
bf3c2c6b
HSHR
894 if (config_lines)
895 save_config_position(config_filename, config_lineno);
059ec3d9
PH
896 continue;
897 }
898
899 /* EOF at top level */
900
901 if (cstate_stack_ptr >= 0)
902 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
903 "Unexpected end of configuration file: .endif missing");
904
905 if (len != 0) break; /* EOF after continuation */
906 next_section[0] = 0; /* EOF at start of logical line */
907 return NULL;
908 }
909
910 config_lineno++;
911 newlen = len + Ustrlen(big_buffer + len);
912
bf3c2c6b
HSHR
913 if (config_lines && config_lineno == 1)
914 save_config_position(config_filename, config_lineno);
915
059ec3d9
PH
916 /* Handle pathologically long physical lines - yes, it did happen - by
917 extending big_buffer at this point. The code also copes with very long
918 logical lines. */
919
920 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
921 {
922 uschar *newbuffer;
923 big_buffer_size += BIG_BUFFER_SIZE;
924 newbuffer = store_malloc(big_buffer_size);
925
926 /* This use of strcpy is OK because we know that the string in the old
927 buffer is shorter than the new buffer. */
928
929 Ustrcpy(newbuffer, big_buffer);
930 store_free(big_buffer);
931 big_buffer = newbuffer;
932 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
933 break;
934 newlen += Ustrlen(big_buffer + newlen);
935 }
936
9650d98a 937 ss = macros_expand(len, &newlen, &macro_found);
059ec3d9
PH
938
939 /* Check for comment lines - these are physical lines. */
940
941 if (*ss == '#') continue;
942
943 /* Handle conditionals, which are also applied to physical lines. Conditions
944 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
945 expansion occured on the rest of the line. A preliminary test for the leading
946 '.' saves effort on most lines. */
947
948 if (*ss == '.')
949 {
950 int i;
951
952 /* Search the list of conditional directives */
953
954 for (i = 0; i < cond_list_size; i++)
955 {
956 int n;
957 cond_item *c = cond_list+i;
958 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
959
960 /* The following character must be white space or end of string */
961
962 n = ss[1 + c->namelen];
963 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
964
965 /* .ifdef and .ifndef push the current state onto the stack, then set
966 a new one from the table. Stack overflow is an error */
967
968 if (c->pushpop > 0)
969 {
970 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
971 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
972 ".%s nested too deeply", c->name);
973 cstate_stack[++cstate_stack_ptr] = cstate;
974 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
975 }
976
977 /* For any of the others, stack underflow is an error. The next state
978 comes either from the stack (.endif) or from the table. */
979
980 else
981 {
982 if (cstate_stack_ptr < 0)
983 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
984 ".%s without matching .ifdef", c->name);
985 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
986 next_cstate[cstate][macro_found? c->action1 : c->action2];
987 }
988
989 /* Having dealt with a directive, break the loop */
990
991 break;
992 }
993
994 /* If we have handled a conditional directive, continue with the next
995 physical line. Otherwise, fall through. */
996
997 if (i < cond_list_size) continue;
998 }
999
1000 /* If the conditional state is not 0 (actively using these lines), ignore
1001 this input line. */
1002
1003 if (cstate != 0) continue; /* Conditional skip */
1004
1005 /* Handle .include lines - these are also physical lines. */
1006
1007 if (Ustrncmp(ss, ".include", 8) == 0 &&
1008 (isspace(ss[8]) ||
1009 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
1010 {
1011 uschar *t;
1012 int include_if_exists = isspace(ss[8])? 0 : 10;
1013 config_file_item *save;
1014 struct stat statbuf;
1015
1016 ss += 9 + include_if_exists;
1017 while (isspace(*ss)) ss++;
1018 t = ss + Ustrlen(ss);
1019 while (t > ss && isspace(t[-1])) t--;
1020 if (*ss == '\"' && t[-1] == '\"')
1021 {
1022 ss++;
1023 t--;
1024 }
1025 *t = 0;
1026
29f67888
HSHR
1027 /* We allow relative file names. For security reasons currently
1028 relative names not allowed with .include_if_exists. For .include_if_exists
1029 we need to check the permissions/ownership of the containing folder */
145396a6 1030 if (*ss != '/')
29f67888
HSHR
1031 if (include_if_exists) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
1032 "absolute path \"%s\"", ss);
1033 else
1034 {
acec9514
JH
1035 gstring * g = string_append(NULL, 3, config_directory, "/", ss);
1036 ss = string_from_gstring(g);
29f67888 1037 }
145396a6 1038
059ec3d9
PH
1039 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
1040
bf3c2c6b
HSHR
1041 if (config_lines)
1042 save_config_position(config_filename, config_lineno);
059ec3d9
PH
1043 save = store_get(sizeof(config_file_item));
1044 save->next = config_file_stack;
1045 config_file_stack = save;
1046 save->file = config_file;
1047 save->filename = config_filename;
29f67888 1048 save->directory = config_directory;
059ec3d9
PH
1049 save->lineno = config_lineno;
1050
10c50704 1051 if (!(config_file = Ufopen(ss, "rb")))
059ec3d9
PH
1052 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
1053 "configuration file %s", ss);
10c50704 1054
059ec3d9 1055 config_filename = string_copy(ss);
863bd541 1056 config_directory = string_copyn(ss, CUstrrchr(ss, '/') - ss);
059ec3d9
PH
1057 config_lineno = 0;
1058 continue;
1059 }
1060
1061 /* If this is the start of the logical line, remember where the non-blank
1062 data starts. Otherwise shuffle down continuation lines to remove leading
1063 white space. */
1064
1065 if (len == 0)
1066 startoffset = ss - big_buffer;
1067 else
1068 {
1069 s = big_buffer + len;
1070 if (ss > s)
1071 {
1072 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1073 newlen -= ss - s;
1074 }
1075 }
1076
1077 /* Accept the new addition to the line. Remove trailing white space. */
1078
1079 len = newlen;
1080 while (len > 0 && isspace(big_buffer[len-1])) len--;
1081 big_buffer[len] = 0;
1082
1083 /* We are done if the line does not end in backslash and contains some data.
1084 Empty logical lines are ignored. For continuations, remove the backslash and
1085 go round the loop to read the continuation line. */
1086
1087 if (len > 0)
1088 {
1089 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1090 big_buffer[--len] = 0; /* Remove backslash */
1091 }
1092 } /* Loop for reading multiple physical lines */
1093
1094/* We now have a logical line. Test for the end of a configuration section (or,
1095more accurately, for the start of the next section). Place the name of the next
1096section in next_section, and return NULL. If the name given is longer than
1097next_section, truncate it. It will be unrecognized later, because all the known
1098section names do fit. Leave space for pluralizing. */
1099
1100s = big_buffer + startoffset; /* First non-space character */
bf3c2c6b
HSHR
1101
1102if (config_lines)
1103 save_config_line(s);
1104
059ec3d9
PH
1105if (strncmpic(s, US"begin ", 6) == 0)
1106 {
1107 s += 6;
1108 while (isspace(*s)) s++;
1109 if (big_buffer + len - s > sizeof(next_section) - 2)
1110 s[sizeof(next_section) - 2] = 0;
1111 Ustrcpy(next_section, s);
1112 return NULL;
1113 }
1114
1115/* Return the first non-blank character. */
1116
1117return s;
1118}
1119
1120
1121
1122/*************************************************
1123* Read a name *
1124*************************************************/
1125
1126/* The yield is the pointer to the next uschar. Names longer than the
1127output space are silently truncated. This function is also used from acl.c when
1128parsing ACLs.
1129
1130Arguments:
1131 name where to put the name
1132 len length of name
1133 s input pointer
1134
1135Returns: new input pointer
1136*/
1137
1138uschar *
1139readconf_readname(uschar *name, int len, uschar *s)
1140{
1141int p = 0;
1142while (isspace(*s)) s++;
1143if (isalpha(*s))
1144 {
1145 while (isalnum(*s) || *s == '_')
1146 {
1147 if (p < len-1) name[p++] = *s;
1148 s++;
1149 }
1150 }
1151name[p] = 0;
1152while (isspace(*s)) s++;
1153return s;
1154}
1155
1156
1157
1158
1159/*************************************************
1160* Read a time value *
1161*************************************************/
1162
1163/* This function is also called from outside, to read argument
1164time values. The format of a time value is:
1165
1166 [<n>w][<n>d][<n>h][<n>m][<n>s]
1167
1168as long as at least one is present. If a format error is encountered,
1169return a negative value. The value must be terminated by the given
1170terminator.
1171
1172Arguments:
1173 s input pointer
1174 terminator required terminating character
1175 return_msec if TRUE, allow fractional seconds and return milliseconds
1176
1177Returns: the time value, or -1 on syntax error
1178 value is seconds if return_msec is FALSE
1179 value is milliseconds if return_msec is TRUE
1180*/
1181
1182int
1ad6489e 1183readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
059ec3d9
PH
1184{
1185int yield = 0;
1186for (;;)
1187 {
1188 int value, count;
1189 double fraction;
1190
1191 if (!isdigit(*s)) return -1;
1ad6489e 1192 (void)sscanf(CCS s, "%d%n", &value, &count);
059ec3d9
PH
1193 s += count;
1194
1195 switch (*s)
1196 {
1197 case 'w': value *= 7;
1198 case 'd': value *= 24;
1199 case 'h': value *= 60;
1200 case 'm': value *= 60;
1201 case 's': s++;
1202 break;
1203
1204 case '.':
1205 if (!return_msec) return -1;
1ad6489e 1206 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
059ec3d9
PH
1207 s += count;
1208 if (*s++ != 's') return -1;
1209 yield += (int)(fraction * 1000.0);
1210 break;
1211
1212 default: return -1;
1213 }
1214
1215 if (return_msec) value *= 1000;
1216 yield += value;
1217 if (*s == terminator) return yield;
1218 }
1219/* Control never reaches here. */
1220}
1221
1222
1223
1224/*************************************************
1225* Read a fixed point value *
1226*************************************************/
1227
1228/* The value is returned *1000
1229
1230Arguments:
1231 s input pointer
1232 terminator required terminator
1233
1234Returns: the value, or -1 on error
1235*/
1236
1237static int
55414b25 1238readconf_readfixed(const uschar *s, int terminator)
059ec3d9
PH
1239{
1240int yield = 0;
1241int value, count;
1242if (!isdigit(*s)) return -1;
1243(void)sscanf(CS s, "%d%n", &value, &count);
1244s += count;
1245yield = value * 1000;
1246if (*s == '.')
1247 {
1248 int m = 100;
1249 while (isdigit((*(++s))))
1250 {
1251 yield += (*s - '0') * m;
1252 m /= 10;
1253 }
1254 }
1255
1256return (*s == terminator)? yield : (-1);
1257}
1258
1259
1260
1261/*************************************************
1262* Find option in list *
1263*************************************************/
1264
1265/* The lists are always in order, so binary chop can be used.
1266
1267Arguments:
1268 name the option name to search for
1269 ol the first entry in the option list
1270 last one more than the offset of the last entry in the option list
1271
1272Returns: pointer to an option entry, or NULL if not found
1273*/
1274
1275static optionlist *
1276find_option(uschar *name, optionlist *ol, int last)
1277{
1278int first = 0;
1279while (last > first)
1280 {
1281 int middle = (first + last)/2;
1282 int c = Ustrcmp(name, ol[middle].name);
d7bed771 1283
059ec3d9 1284 if (c == 0) return ol + middle;
d7bed771
JH
1285 else if (c > 0) first = middle + 1;
1286 else last = middle;
059ec3d9
PH
1287 }
1288return NULL;
1289}
1290
1291
1292
1293/*************************************************
1294* Find a set flag in option list *
1295*************************************************/
1296
1297/* Because some versions of Unix make no restrictions on the values of uids and
1298gids (even negative ones), we cannot represent "unset" by a special value.
1299There is therefore a separate boolean variable for each one indicating whether
1300a value is set or not. This function returns a pointer to the boolean, given
1301the original option name. It is a major disaster if the flag cannot be found.
1302
1303Arguments:
1304 name the name of the uid or gid option
1305 oltop points to the start of the relevant option list
1306 last one more than the offset of the last item in the option list
1307 data_block NULL when reading main options => data values in the option
1308 list are absolute addresses; otherwise they are byte offsets
1309 in data_block (used for driver options)
1310
1311Returns: a pointer to the boolean flag.
1312*/
1313
1314static BOOL *
1315get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1316{
1317optionlist *ol;
1318uschar name2[64];
1319sprintf(CS name2, "*set_%.50s", name);
1320ol = find_option(name2, oltop, last);
1321if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1322 "Exim internal error: missing set flag for %s", name);
1323return (data_block == NULL)? (BOOL *)(ol->value) :
5903c6ff 1324 (BOOL *)(US data_block + (long int)(ol->value));
059ec3d9
PH
1325}
1326
1327
1328
1329
1330/*************************************************
1331* Output extra characters message and die *
1332*************************************************/
1333
1334/* Called when an option line has junk on the end. Sometimes this is because
1335the sysadmin thinks comments are permitted.
1336
1337Arguments:
1338 s points to the extra characters
1339 t1..t3 strings to insert in the log message
1340
1341Returns: doesn't return; dies
1342*/
1343
1344static void
55414b25 1345extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
059ec3d9
PH
1346{
1347uschar *comment = US"";
1348if (*s == '#') comment = US" (# is comment only at line start)";
1349log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1350 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1351}
1352
1353
1354
1355/*************************************************
1356* Read rewrite information *
1357*************************************************/
1358
1359/* Each line of rewrite information contains:
1360
1361. A complete address in the form user@domain, possibly with
1362 leading * for each part; or alternatively, a regex.
1363
1364. A replacement string (which will be expanded).
1365
1366. An optional sequence of one-letter flags, indicating which
1367 headers etc. to apply this rule to.
1368
1369All this is decoded and placed into a control block. The OR of the flags is
1370maintained in a common word.
1371
1372Arguments:
1373 p points to the string that makes up the rule
1374 existflags points to the overall flag word
1375 isglobal TRUE if reading global rewrite rules
1376
1377Returns: the control block for the parsed rule.
1378*/
1379
1380static rewrite_rule *
55414b25 1381readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
059ec3d9
PH
1382{
1383rewrite_rule *next = store_get(sizeof(rewrite_rule));
1384
1385next->next = NULL;
1386next->key = string_dequote(&p);
1387
1388while (isspace(*p)) p++;
1389if (*p == 0)
1390 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1391 "missing rewrite replacement string");
1392
1393next->flags = 0;
1394next->replacement = string_dequote(&p);
1395
1396while (*p != 0) switch (*p++)
1397 {
1398 case ' ': case '\t': break;
1399
1400 case 'q': next->flags |= rewrite_quit; break;
1401 case 'w': next->flags |= rewrite_whole; break;
1402
1403 case 'h': next->flags |= rewrite_all_headers; break;
1404 case 's': next->flags |= rewrite_sender; break;
1405 case 'f': next->flags |= rewrite_from; break;
1406 case 't': next->flags |= rewrite_to; break;
1407 case 'c': next->flags |= rewrite_cc; break;
1408 case 'b': next->flags |= rewrite_bcc; break;
1409 case 'r': next->flags |= rewrite_replyto; break;
1410
1411 case 'E': next->flags |= rewrite_all_envelope; break;
1412 case 'F': next->flags |= rewrite_envfrom; break;
1413 case 'T': next->flags |= rewrite_envto; break;
1414
1415 case 'Q': next->flags |= rewrite_qualify; break;
1416 case 'R': next->flags |= rewrite_repeat; break;
1417
1418 case 'S':
1419 next->flags |= rewrite_smtp;
1420 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1421 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1422 "rewrite rule has the S flag but is not a regular expression");
1423 break;
1424
1425 default:
1426 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1427 "unknown rewrite flag character '%c' "
1428 "(could be missing quotes round replacement item)", p[-1]);
1429 break;
1430 }
1431
1432/* If no action flags are set, set all the "normal" rewrites. */
1433
1434if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1435 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1436
1437/* Remember which exist, for optimization, and return the rule */
1438
1439*existflags |= next->flags;
1440return next;
1441}
1442
1443
1444
1445
1446/*************************************************
1447* Read global rewrite information *
1448*************************************************/
1449
1450/* Each line is a single rewrite rule; it is parsed into a control block
1451by readconf_one_rewrite(), and its flags are ORed into the global flag
1452word rewrite_existflags. */
1453
1454void
1455readconf_rewrites(void)
1456{
1457rewrite_rule **chain = &global_rewrite_rules;
1458uschar *p;
1459
1460while ((p = get_config_line()) != NULL)
1461 {
1462 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1463 *chain = next;
1464 chain = &(next->next);
1465 }
1466}
1467
1468
1469
1470/*************************************************
1471* Read a string *
1472*************************************************/
1473
1474/* Strings are read into the normal store pool. As long we aren't too
1475near the end of the current block, the string will just use what is necessary
1476on the top of the stacking pool, because string_cat() uses the extension
1477mechanism.
1478
1479Argument:
1480 s the rest of the input line
1481 name the option name (for errors)
1482
1483Returns: pointer to the string
1484*/
1485
1486static uschar *
55414b25 1487read_string(const uschar *s, const uschar *name)
059ec3d9
PH
1488{
1489uschar *yield;
55414b25 1490const uschar *ss;
059ec3d9
PH
1491
1492if (*s != '\"') return string_copy(s);
1493
1494ss = s;
1495yield = string_dequote(&s);
1496
1497if (s == ss+1 || s[-1] != '\"')
1498 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1499 "missing quote at end of string value for %s", name);
1500
1501if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1502
1503return yield;
1504}
1505
1506
1507/*************************************************
1ad6489e
JH
1508* Custom-handler options *
1509*************************************************/
1510static void
1511fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1512{
1ad6489e
JH
1513if (*str == '$')
1514 smtp_receive_timeout_s = string_copy(str);
1515else
1516 {
1517 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1518 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1519 if (smtp_receive_timeout < 0)
1520 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1521 name);
1522 }
1523}
1524
1525/*************************************************
059ec3d9
PH
1526* Handle option line *
1527*************************************************/
1528
1529/* This function is called from several places to process a line containing the
1530setting of an option. The first argument is the line to be decoded; it has been
1531checked not to be empty and not to start with '#'. Trailing newlines and white
1532space have been removed. The second argument is a pointer to the list of
1533variable names that are to be recognized, together with their types and
1534locations, and the third argument gives the number of entries in the list.
1535
1536The fourth argument is a pointer to a data block. If it is NULL, then the data
1537values in the options list are absolute addresses. Otherwise, they are byte
1538offsets in the data block.
1539
1540String option data may continue onto several lines; this function reads further
1541data from config_file if necessary.
1542
1543The yield of this function is normally zero. If a string continues onto
1544multiple lines, then the data value is permitted to be followed by a comma
1545or a semicolon (for use in drivers) and the yield is that character.
1546
1547Arguments:
1548 buffer contains the configuration line to be handled
1549 oltop points to the start of the relevant option list
1550 last one more than the offset of the last item in the option list
1551 data_block NULL when reading main options => data values in the option
1552 list are absolute addresses; otherwise they are byte offsets
1553 in data_block when they have opt_public set; otherwise
1554 they are byte offsets in data_block->options_block.
1555 unknown_txt format string to use in panic message for unknown option;
1556 must contain %s for option name
1557 if given as NULL, don't panic on unknown option
1558
1559Returns: TRUE if an option was read successfully,
1560 FALSE false for an unknown option if unknown_txt == NULL,
1561 otherwise panic and die on an unknown option
1562*/
1563
1564static BOOL
1565readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1566 void *data_block, uschar *unknown_txt)
1567{
1568int ptr = 0;
1569int offset = 0;
1570int n, count, type, value;
1571int issecure = 0;
1572uid_t uid;
1573gid_t gid;
1574BOOL boolvalue = TRUE;
1575BOOL freesptr = TRUE;
1576optionlist *ol, *ol2;
1577struct passwd *pw;
1578void *reset_point;
1579int intbase = 0;
1580uschar *inttype = US"";
1581uschar *sptr;
1582uschar *s = buffer;
532be449 1583uschar **str_target;
059ec3d9
PH
1584uschar name[64];
1585uschar name2[64];
1586
1587/* There may be leading spaces; thereafter, we expect an option name starting
1588with a letter. */
1589
1590while (isspace(*s)) s++;
1591if (!isalpha(*s))
1592 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1593
1594/* Read the name of the option, and skip any subsequent white space. If
1595it turns out that what we read was "hide", set the flag indicating that
1596this is a secure option, and loop to read the next word. */
1597
1598for (n = 0; n < 2; n++)
1599 {
1600 while (isalnum(*s) || *s == '_')
1601 {
1602 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1603 s++;
1604 }
1605 name[ptr] = 0;
1606 while (isspace(*s)) s++;
1607 if (Ustrcmp(name, "hide") != 0) break;
1608 issecure = opt_secure;
1609 ptr = 0;
1610 }
1611
1612/* Deal with "no_" or "not_" here for booleans */
1613
1614if (Ustrncmp(name, "no_", 3) == 0)
1615 {
1616 boolvalue = FALSE;
1617 offset = 3;
1618 }
1619
1620if (Ustrncmp(name, "not_", 4) == 0)
1621 {
1622 boolvalue = FALSE;
1623 offset = 4;
1624 }
1625
1626/* Search the list for the given name. A non-existent name, or an option that
1627is set twice, is a disaster. */
1628
d7bed771 1629if (!(ol = find_option(name + offset, oltop, last)))
059ec3d9
PH
1630 {
1631 if (unknown_txt == NULL) return FALSE;
1632 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1633 }
1634
846726c5
JH
1635if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1636 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1637 "\"%s\" option set for the second time", name);
059ec3d9
PH
1638
1639ol->type |= opt_set | issecure;
1640type = ol->type & opt_mask;
1641
1642/* Types with data values must be followed by '='; the "no[t]_" prefix
1643applies only to boolean values. */
1644
1645if (type < opt_bool || type > opt_bool_last)
1646 {
1647 if (offset != 0)
1648 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1649 "negation prefix applied to a non-boolean option");
1650 if (*s == 0)
1651 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1652 "unexpected end of line (data missing) after %s", name);
1653 if (*s != '=')
1654 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1655 }
1656
1657/* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
9c695f6d 1658true/false/yes/no, or, in the case of opt_expand_bool, a general string that
059ec3d9
PH
1659ultimately expands to one of those values. */
1660
1661else if (*s != 0 && (offset != 0 || *s != '='))
1662 extra_chars_error(s, US"boolean option ", name, US"");
1663
1664/* Skip white space after = */
1665
1666if (*s == '=') while (isspace((*(++s))));
1667
1668/* If there is a data block and the opt_public flag is not set, change
1669the data block pointer to the private options block. */
1670
1671if (data_block != NULL && (ol->type & opt_public) == 0)
1672 data_block = (void *)(((driver_instance *)data_block)->options_block);
1673
1674/* Now get the data according to the type. */
1675
1676switch (type)
1677 {
1678 /* If a string value is not enclosed in quotes, it consists of
1679 the rest of the current line, verbatim. Otherwise, string escapes
1680 are processed.
1681
1682 A transport is specified as a string, which is then looked up in the
1683 list of transports. A search type is specified as one of a number of
1684 known strings.
1685
1686 A set or rewrite rules for a driver is specified as a string, which is
1687 then parsed into a suitable chain of control blocks.
1688
1689 Uids and gids are specified as strings which are then looked up in the
1690 passwd file. Lists of uids and gids are similarly specified as colon-
1691 separated strings. */
1692
1693 case opt_stringptr:
1694 case opt_uid:
1695 case opt_gid:
1696 case opt_expand_uid:
1697 case opt_expand_gid:
1698 case opt_uidlist:
1699 case opt_gidlist:
1700 case opt_rewrite:
1701
1702 reset_point = sptr = read_string(s, name);
1703
1704 /* Having read a string, we now have several different ways of using it,
1705 depending on the data type, so do another switch. If keeping the actual
1706 string is not required (because it is interpreted), freesptr is set TRUE,
1707 and at the end we reset the pool. */
1708
1709 switch (type)
1710 {
1711 /* If this was a string, set the variable to point to the new string,
1712 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1713 rules, we still keep the string (for printing), and parse the rules into a
1714 control block and flags word. */
1715
1716 case opt_stringptr:
adaa0e2c
JH
1717 str_target = data_block ? USS (US data_block + (long int)(ol->value))
1718 : USS (ol->value);
846726c5 1719 if (ol->type & opt_rep_con)
532be449 1720 {
adaa0e2c 1721 uschar * saved_condition;
6a8de854
PP
1722 /* We already have a condition, we're conducting a crude hack to let
1723 multiple condition rules be chained together, despite storing them in
1724 text form. */
adaa0e2c
JH
1725 *str_target = string_copy_malloc( (saved_condition = *str_target)
1726 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1727 saved_condition, sptr)
1728 : sptr);
846726c5
JH
1729 /* TODO(pdp): there is a memory leak here and just below
1730 when we set 3 or more conditions; I still don't
1731 understand the store mechanism enough to know
1732 what's the safe way to free content from an earlier store.
6a8de854
PP
1733 AFAICT, stores stack, so freeing an early stored item also stores
1734 all data alloc'd after it. If we knew conditions were adjacent,
1735 we could survive that, but we don't. So I *think* we need to take
1736 another bit from opt_type to indicate "malloced"; this seems like
1737 quite a hack, especially for this one case. It also means that
1738 we can't ever reclaim the store from the *first* condition.
1739
1740 Because we only do this once, near process start-up, I'm prepared to
1741 let this slide for the time being, even though it rankles. */
532be449 1742 }
76146973
JH
1743 else if (ol->type & opt_rep_str)
1744 {
2ad78978
JH
1745 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1746 int sep_i = -(int)sep_o;
55414b25 1747 const uschar * list = sptr;
2ad78978 1748 uschar * s;
acec9514 1749 gstring * list_o = NULL;
4226691b 1750
acec9514
JH
1751 if (*str_target)
1752 {
1753 list_o = string_get(Ustrlen(*str_target) + Ustrlen(sptr));
1754 list_o = string_cat(list_o, *str_target);
1755 }
2ad78978
JH
1756
1757 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
acec9514
JH
1758 list_o = string_append_listele(list_o, sep_o, s);
1759
2ad78978 1760 if (list_o)
acec9514 1761 *str_target = string_copy_malloc(string_from_gstring(list_o));
76146973 1762 }
532be449
PP
1763 else
1764 {
1765 *str_target = sptr;
1766 freesptr = FALSE;
1767 }
1768 break;
1769
059ec3d9 1770 case opt_rewrite:
adaa0e2c
JH
1771 if (data_block)
1772 *USS (US data_block + (long int)(ol->value)) = sptr;
059ec3d9 1773 else
adaa0e2c 1774 *USS (ol->value) = sptr;
059ec3d9
PH
1775 freesptr = FALSE;
1776 if (type == opt_rewrite)
1777 {
1778 int sep = 0;
1779 int *flagptr;
1780 uschar *p = sptr;
1781 rewrite_rule **chain;
1782 optionlist *ol3;
1783
1784 sprintf(CS name2, "*%.50s_rules", name);
1785 ol2 = find_option(name2, oltop, last);
1786 sprintf(CS name2, "*%.50s_flags", name);
1787 ol3 = find_option(name2, oltop, last);
1788
1789 if (ol2 == NULL || ol3 == NULL)
1790 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1791 "rewrite rules not available for driver");
1792
1793 if (data_block == NULL)
1794 {
1795 chain = (rewrite_rule **)(ol2->value);
1796 flagptr = (int *)(ol3->value);
1797 }
1798 else
1799 {
5903c6ff
JH
1800 chain = (rewrite_rule **)(US data_block + (long int)(ol2->value));
1801 flagptr = (int *)(US data_block + (long int)(ol3->value));
059ec3d9
PH
1802 }
1803
55414b25 1804 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
059ec3d9
PH
1805 {
1806 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1807 *chain = next;
1808 chain = &(next->next);
1809 }
1810
1811 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1812 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1813 "non-header rewrite - not allowed at transport time -");
1814 }
1815 break;
1816
1817 /* If it was an expanded uid, see if there is any expansion to be
1818 done by checking for the presence of a $ character. If there is, save it
1819 in the corresponding *expand_user option field. Otherwise, fall through
1820 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1821 of data. */
1822
1823 case opt_expand_uid:
1824 sprintf(CS name2, "*expand_%.50s", name);
1825 ol2 = find_option(name2, oltop, last);
1826 if (ol2 != NULL)
1827 {
1828 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1829
1830 if (data_block == NULL)
1831 *((uschar **)(ol2->value)) = ss;
1832 else
5903c6ff 1833 *((uschar **)(US data_block + (long int)(ol2->value))) = ss;
059ec3d9
PH
1834
1835 if (ss != NULL)
1836 {
1837 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1838 freesptr = FALSE;
1839 break;
1840 }
1841 }
1842
1843 /* Look up a fixed uid, and also make use of the corresponding gid
1844 if a passwd entry is returned and the gid has not been set. */
1845
1846 case opt_uid:
1847 if (!route_finduser(sptr, &pw, &uid))
1848 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1849 if (data_block == NULL)
1850 *((uid_t *)(ol->value)) = uid;
1851 else
5903c6ff 1852 *((uid_t *)(US data_block + (long int)(ol->value))) = uid;
059ec3d9
PH
1853
1854 /* Set the flag indicating a fixed value is set */
1855
1856 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1857
1858 /* Handle matching gid if we have a passwd entry: done by finding the
1859 same name with terminating "user" changed to "group"; if not found,
1860 ignore. Also ignore if the value is already set. */
1861
1862 if (pw == NULL) break;
1863 Ustrcpy(name+Ustrlen(name)-4, "group");
1864 ol2 = find_option(name, oltop, last);
1865 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1866 (ol2->type & opt_mask) == opt_expand_gid))
1867 {
1868 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1869 if (! *set_flag)
1870 {
1871 if (data_block == NULL)
1872 *((gid_t *)(ol2->value)) = pw->pw_gid;
1873 else
5903c6ff 1874 *((gid_t *)(US data_block + (long int)(ol2->value))) = pw->pw_gid;
059ec3d9
PH
1875 *set_flag = TRUE;
1876 }
1877 }
1878 break;
1879
1880 /* If it was an expanded gid, see if there is any expansion to be
1881 done by checking for the presence of a $ character. If there is, save it
1882 in the corresponding *expand_user option field. Otherwise, fall through
1883 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1884 of data. */
1885
1886 case opt_expand_gid:
1887 sprintf(CS name2, "*expand_%.50s", name);
1888 ol2 = find_option(name2, oltop, last);
1889 if (ol2 != NULL)
1890 {
1891 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1892
1893 if (data_block == NULL)
1894 *((uschar **)(ol2->value)) = ss;
1895 else
5903c6ff 1896 *((uschar **)(US data_block + (long int)(ol2->value))) = ss;
059ec3d9
PH
1897
1898 if (ss != NULL)
1899 {
1900 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1901 freesptr = FALSE;
1902 break;
1903 }
1904 }
1905
1906 /* Handle freestanding gid */
1907
1908 case opt_gid:
1909 if (!route_findgroup(sptr, &gid))
1910 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1911 if (data_block == NULL)
1912 *((gid_t *)(ol->value)) = gid;
1913 else
5903c6ff 1914 *((gid_t *)(US data_block + (long int)(ol->value))) = gid;
059ec3d9
PH
1915 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1916 break;
1917
1918 /* If it was a uid list, look up each individual entry, and build
1919 a vector of uids, with a count in the first element. Put the vector
1920 in malloc store so we can free the string. (We are reading into
1921 permanent store already.) */
1922
1923 case opt_uidlist:
1924 {
1925 int count = 1;
1926 uid_t *list;
1927 int ptr = 0;
55414b25
JH
1928 const uschar *p;
1929 const uschar *op = expand_string (sptr);
0925ede6
PH
1930
1931 if (op == NULL)
1932 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1933 name, expand_string_message);
059ec3d9 1934
0925ede6 1935 p = op;
059ec3d9 1936 if (*p != 0) count++;
0925ede6 1937 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
1938 list = store_malloc(count*sizeof(uid_t));
1939 list[ptr++] = (uid_t)(count - 1);
1940
1941 if (data_block == NULL)
1942 *((uid_t **)(ol->value)) = list;
1943 else
5903c6ff 1944 *((uid_t **)(US data_block + (long int)(ol->value))) = list;
059ec3d9 1945
0925ede6 1946 p = op;
059ec3d9
PH
1947 while (count-- > 1)
1948 {
1949 int sep = 0;
1950 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1951 if (!route_finduser(big_buffer, NULL, &uid))
1952 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1953 big_buffer);
1954 list[ptr++] = uid;
1955 }
1956 }
1957 break;
1958
1959 /* If it was a gid list, look up each individual entry, and build
1960 a vector of gids, with a count in the first element. Put the vector
1961 in malloc store so we can free the string. (We are reading into permanent
1962 store already.) */
1963
1964 case opt_gidlist:
1965 {
1966 int count = 1;
1967 gid_t *list;
1968 int ptr = 0;
55414b25
JH
1969 const uschar *p;
1970 const uschar *op = expand_string (sptr);
0925ede6
PH
1971
1972 if (op == NULL)
1973 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1974 name, expand_string_message);
059ec3d9 1975
0925ede6 1976 p = op;
059ec3d9 1977 if (*p != 0) count++;
0925ede6 1978 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
1979 list = store_malloc(count*sizeof(gid_t));
1980 list[ptr++] = (gid_t)(count - 1);
1981
1982 if (data_block == NULL)
1983 *((gid_t **)(ol->value)) = list;
1984 else
5903c6ff 1985 *((gid_t **)(US data_block + (long int)(ol->value))) = list;
059ec3d9 1986
0925ede6 1987 p = op;
059ec3d9
PH
1988 while (count-- > 1)
1989 {
1990 int sep = 0;
1991 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1992 if (!route_findgroup(big_buffer, &gid))
1993 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1994 big_buffer);
1995 list[ptr++] = gid;
1996 }
1997 }
1998 break;
1999 }
2000
2001 /* Release store if the value of the string doesn't need to be kept. */
2002
2003 if (freesptr) store_reset(reset_point);
2004 break;
2005
2006 /* Expanded boolean: if no characters follow, or if there are no dollar
2007 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
2008 save the string for later expansion in the alternate place. */
2009
2010 case opt_expand_bool:
2011 if (*s != 0 && Ustrchr(s, '$') != 0)
2012 {
2013 sprintf(CS name2, "*expand_%.50s", name);
2014 ol2 = find_option(name2, oltop, last);
2015 if (ol2 != NULL)
2016 {
2017 reset_point = sptr = read_string(s, name);
2018 if (data_block == NULL)
2019 *((uschar **)(ol2->value)) = sptr;
2020 else
5903c6ff 2021 *((uschar **)(US data_block + (long int)(ol2->value))) = sptr;
059ec3d9
PH
2022 freesptr = FALSE;
2023 break;
2024 }
2025 }
2026 /* Fall through */
2027
2028 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
2029 look for yes/not/true/false. Some booleans are stored in a single bit in
2030 a single int. There's a special fudge for verify settings; without a suffix
2031 they set both xx_sender and xx_recipient. The table points to the sender
2032 value; search subsequently for the recipient. There's another special case:
2033 opt_bool_set also notes when a boolean has been set. */
2034
2035 case opt_bool:
2036 case opt_bit:
2037 case opt_bool_verify:
2038 case opt_bool_set:
2039 if (*s != 0)
2040 {
2041 s = readconf_readname(name2, 64, s);
2042 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
2043 boolvalue = TRUE;
2044 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
2045 boolvalue = FALSE;
2046 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2047 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
2048 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
2049 US"for boolean option ", name);
2050 }
2051
2052 /* Handle single-bit type. */
2053
2054 if (type == opt_bit)
2055 {
2056 int bit = 1 << ((ol->type >> 16) & 31);
2057 int *ptr = (data_block == NULL)?
2058 (int *)(ol->value) :
5903c6ff 2059 (int *)(US data_block + (long int)ol->value);
059ec3d9
PH
2060 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
2061 break;
2062 }
2063
2064 /* Handle full BOOL types */
2065
2066 if (data_block == NULL)
2067 *((BOOL *)(ol->value)) = boolvalue;
2068 else
5903c6ff 2069 *((BOOL *)(US data_block + (long int)(ol->value))) = boolvalue;
059ec3d9
PH
2070
2071 /* Verify fudge */
2072
2073 if (type == opt_bool_verify)
2074 {
2075 sprintf(CS name2, "%.50s_recipient", name + offset);
2076 ol2 = find_option(name2, oltop, last);
2077 if (ol2 != NULL)
2078 {
2079 if (data_block == NULL)
2080 *((BOOL *)(ol2->value)) = boolvalue;
2081 else
5903c6ff 2082 *((BOOL *)(US data_block + (long int)(ol2->value))) = boolvalue;
059ec3d9
PH
2083 }
2084 }
2085
2086 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2087
2088 else if (type == opt_bool_set)
2089 {
2090 sprintf(CS name2, "*set_%.50s", name + offset);
2091 ol2 = find_option(name2, oltop, last);
2092 if (ol2 != NULL)
2093 {
2094 if (data_block == NULL)
2095 *((BOOL *)(ol2->value)) = TRUE;
2096 else
5903c6ff 2097 *((BOOL *)(US data_block + (long int)(ol2->value))) = TRUE;
059ec3d9
PH
2098 }
2099 }
2100 break;
2101
2102 /* Octal integer */
2103
2104 case opt_octint:
2105 intbase = 8;
2106 inttype = US"octal ";
2107
2108 /* Integer: a simple(ish) case; allow octal and hex formats, and
dcb72db9 2109 suffixes K, M and G. The different types affect output, not input. */
059ec3d9
PH
2110
2111 case opt_mkint:
2112 case opt_int:
2113 {
2114 uschar *endptr;
7e8d92ba
PH
2115 long int lvalue;
2116
059ec3d9 2117 errno = 0;
7e8d92ba 2118 lvalue = strtol(CS s, CSS &endptr, intbase);
059ec3d9
PH
2119
2120 if (endptr == s)
2121 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2122 inttype, name);
2123
2124 if (errno != ERANGE)
059ec3d9
PH
2125 if (tolower(*endptr) == 'k')
2126 {
7e8d92ba
PH
2127 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
2128 else lvalue *= 1024;
059ec3d9
PH
2129 endptr++;
2130 }
2131 else if (tolower(*endptr) == 'm')
2132 {
7e8d92ba 2133 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
059ec3d9 2134 errno = ERANGE;
7e8d92ba 2135 else lvalue *= 1024*1024;
059ec3d9
PH
2136 endptr++;
2137 }
dcb72db9
JH
2138 else if (tolower(*endptr) == 'g')
2139 {
2140 if (lvalue > INT_MAX/(1024*1024*1024) || lvalue < INT_MIN/(1024*1024*1024))
2141 errno = ERANGE;
2142 else lvalue *= 1024*1024*1024;
2143 endptr++;
2144 }
059ec3d9 2145
7e8d92ba
PH
2146 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2147 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2148 "absolute value of integer \"%s\" is too large (overflow)", s);
059ec3d9
PH
2149
2150 while (isspace(*endptr)) endptr++;
2151 if (*endptr != 0)
2152 extra_chars_error(endptr, inttype, US"integer value for ", name);
7e8d92ba
PH
2153
2154 value = (int)lvalue;
059ec3d9
PH
2155 }
2156
2157 if (data_block == NULL)
2158 *((int *)(ol->value)) = value;
2159 else
5903c6ff 2160 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2161 break;
2162
dcb72db9
JH
2163 /* Integer held in K: again, allow octal and hex formats, and suffixes K, M
2164 and G. */
13559da6 2165 /*XXX consider moving to int_eximarith_t (but mind the overflow test 0415) */
059ec3d9
PH
2166
2167 case opt_Kint:
2168 {
2169 uschar *endptr;
2170 errno = 0;
2171 value = strtol(CS s, CSS &endptr, intbase);
2172
2173 if (endptr == s)
2174 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2175 inttype, name);
2176
2177 if (errno != ERANGE)
dcb72db9 2178 if (tolower(*endptr) == 'g')
059ec3d9 2179 {
dcb72db9
JH
2180 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
2181 errno = ERANGE;
2182 else
2183 value *= 1024*1024;
059ec3d9
PH
2184 endptr++;
2185 }
dcb72db9 2186 else if (tolower(*endptr) == 'm')
059ec3d9 2187 {
dcb72db9
JH
2188 if (value > INT_MAX/1024 || value < INT_MIN/1024)
2189 errno = ERANGE;
2190 else
2191 value *= 1024;
059ec3d9
PH
2192 endptr++;
2193 }
dcb72db9
JH
2194 else if (tolower(*endptr) == 'k')
2195 endptr++;
059ec3d9 2196 else
059ec3d9 2197 value = (value + 512)/1024;
059ec3d9
PH
2198
2199 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2200 "absolute value of integer \"%s\" is too large (overflow)", s);
2201
2202 while (isspace(*endptr)) endptr++;
2203 if (*endptr != 0)
2204 extra_chars_error(endptr, inttype, US"integer value for ", name);
2205 }
2206
2207 if (data_block == NULL)
2208 *((int *)(ol->value)) = value;
2209 else
5903c6ff 2210 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2211 break;
2212
2213 /* Fixed-point number: held to 3 decimal places. */
2214
2215 case opt_fixed:
2216 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2217 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2218 "fixed-point number expected for %s", name);
2219
2220 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2221 "integer \"%s\" is too large (overflow)", s);
2222
2223 value *= 1000;
2224
2225 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2226 "integer \"%s\" is too large (overflow)", s);
2227
76ac1b5b
JH
2228 /* We get a coverity error here for using count, as it derived
2229 from the tainted buffer pointed to by s, as parsed by sscanf().
4c04137d 2230 By the definition of sscanf we must be accessing between start
76ac1b5b
JH
2231 and end of s (assuming it is nul-terminated...) so ignore the error. */
2232 /* coverity[tainted_data] */
059ec3d9
PH
2233 if (s[count] == '.')
2234 {
2235 int d = 100;
2236 while (isdigit(s[++count]))
2237 {
2238 value += (s[count] - '0') * d;
2239 d /= 10;
2240 }
2241 }
2242
2243 while (isspace(s[count])) count++;
2244
2245 if (s[count] != 0)
2246 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2247
2248 if (data_block == NULL)
2249 *((int *)(ol->value)) = value;
2250 else
5903c6ff 2251 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2252 break;
2253
2254 /* There's a special routine to read time values. */
2255
2256 case opt_time:
2257 value = readconf_readtime(s, 0, FALSE);
2258 if (value < 0)
2259 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2260 name);
2261 if (data_block == NULL)
2262 *((int *)(ol->value)) = value;
2263 else
5903c6ff 2264 *((int *)(US data_block + (long int)(ol->value))) = value;
059ec3d9
PH
2265 break;
2266
2267 /* A time list is a list of colon-separated times, with the first
2268 element holding the size of the list and the second the number of
2269 entries used. */
2270
2271 case opt_timelist:
2272 {
2273 int count = 0;
2274 int *list = (data_block == NULL)?
2275 (int *)(ol->value) :
5903c6ff 2276 (int *)(US data_block + (long int)(ol->value));
059ec3d9
PH
2277
2278 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2279 {
2280 int terminator = 0;
2281 uschar *snext = Ustrchr(s, ':');
2282 if (snext != NULL)
2283 {
2284 uschar *ss = snext;
2285 while (ss > s && isspace(ss[-1])) ss--;
2286 terminator = *ss;
2287 }
2288 value = readconf_readtime(s, terminator, FALSE);
2289 if (value < 0)
2290 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2291 name);
2292 if (count > 1 && value <= list[count])
2293 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2294 "time value out of order for %s", name);
2295 list[count+1] = value;
2296 if (snext == NULL) break;
2297 s = snext + 1;
2298 while (isspace(*s)) s++;
2299 }
2300
2301 if (count > list[0] - 2)
2302 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2303 name);
2304 if (count > 0 && list[2] == 0) count = 0;
2305 list[1] = count;
1ad6489e 2306 break;
059ec3d9
PH
2307 }
2308
1ad6489e
JH
2309 case opt_func:
2310 {
2311 void (*fn)() = ol->value;
2312 fn(name, s);
2313 break;
2314 }
059ec3d9
PH
2315 }
2316
2317return TRUE;
2318}
2319
2320
2321
2322/*************************************************
2323* Print a time value *
2324*************************************************/
2325
2326/*
2327Argument: a time value in seconds
2328Returns: pointer to a fixed buffer containing the time as a string,
2329 in readconf_readtime() format
2330*/
2331
2332uschar *
2333readconf_printtime(int t)
2334{
2335int s, m, h, d, w;
2336uschar *p = time_buffer;
2337
ea49d0e1
PH
2338if (t < 0)
2339 {
2340 *p++ = '-';
2341 t = -t;
2342 }
2343
059ec3d9
PH
2344s = t % 60;
2345t /= 60;
2346m = t % 60;
2347t /= 60;
2348h = t % 24;
2349t /= 24;
2350d = t % 7;
2351w = t/7;
2352
32dfdf8b
JH
2353if (w > 0) p += sprintf(CS p, "%dw", w);
2354if (d > 0) p += sprintf(CS p, "%dd", d);
2355if (h > 0) p += sprintf(CS p, "%dh", h);
2356if (m > 0) p += sprintf(CS p, "%dm", m);
059ec3d9
PH
2357if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2358
2359return time_buffer;
2360}
2361
2362
2363
2364/*************************************************
2365* Print an individual option value *
2366*************************************************/
2367
2368/* This is used by the -bP option, so prints to the standard output.
2369The entire options list is passed in as an argument, because some options come
2370in pairs - typically uid/gid settings, which can either be explicit numerical
2371values, or strings to be expanded later. If the numerical value is unset,
2372search for "*expand_<name>" to see if there is a string equivalent.
2373
2374Arguments:
2375 ol option entry, or NULL for an unknown option
2376 name option name
2377 options_block NULL for main configuration options; otherwise points to
2378 a driver block; if the option doesn't have opt_public
2379 set, then options_block->options_block is where the item
2380 resides.
2381 oltop points to the option list in which ol exists
2382 last one more than the offset of the last entry in optop
12f69989 2383 no_labels do not show "foo = " at the start.
059ec3d9 2384
2be324ee 2385Returns: boolean success
059ec3d9
PH
2386*/
2387
2be324ee 2388static BOOL
059ec3d9 2389print_ol(optionlist *ol, uschar *name, void *options_block,
12f69989 2390 optionlist *oltop, int last, BOOL no_labels)
059ec3d9
PH
2391{
2392struct passwd *pw;
2393struct group *gr;
2394optionlist *ol2;
2395void *value;
2396uid_t *uidlist;
2397gid_t *gidlist;
2398uschar *s;
2399uschar name2[64];
2400
2be324ee 2401if (!ol)
059ec3d9
PH
2402 {
2403 printf("%s is not a known option\n", name);
2be324ee 2404 return FALSE;
059ec3d9
PH
2405 }
2406
2407/* Non-admin callers cannot see options that have been flagged secure by the
2408"hide" prefix. */
2409
2be324ee 2410if (!admin_user && ol->type & opt_secure)
059ec3d9 2411 {
12f69989
PP
2412 if (no_labels)
2413 printf("%s\n", hidden);
2414 else
2415 printf("%s = %s\n", name, hidden);
2be324ee 2416 return TRUE;
059ec3d9
PH
2417 }
2418
2419/* Else show the value of the option */
2420
2421value = ol->value;
2be324ee 2422if (options_block)
059ec3d9 2423 {
2be324ee 2424 if (!(ol->type & opt_public))
059ec3d9 2425 options_block = (void *)(((driver_instance *)options_block)->options_block);
5903c6ff 2426 value = (void *)(US options_block + (long int)value);
059ec3d9
PH
2427 }
2428
2429switch(ol->type & opt_mask)
2430 {
2431 case opt_stringptr:
2432 case opt_rewrite: /* Show the text value */
2be324ee
JH
2433 s = *(USS value);
2434 if (!no_labels) printf("%s = ", name);
2435 printf("%s\n", s ? string_printing2(s, FALSE) : US"");
2436 break;
059ec3d9
PH
2437
2438 case opt_int:
2be324ee
JH
2439 if (!no_labels) printf("%s = ", name);
2440 printf("%d\n", *((int *)value));
2441 break;
059ec3d9
PH
2442
2443 case opt_mkint:
2444 {
2445 int x = *((int *)value);
2446 if (x != 0 && (x & 1023) == 0)
2447 {
2448 int c = 'K';
2449 x >>= 10;
2450 if ((x & 1023) == 0)
2451 {
2452 c = 'M';
2453 x >>= 10;
2454 }
12f69989
PP
2455 if (!no_labels) printf("%s = ", name);
2456 printf("%d%c\n", x, c);
2457 }
2458 else
2459 {
2460 if (!no_labels) printf("%s = ", name);
2461 printf("%d\n", x);
059ec3d9 2462 }
059ec3d9 2463 }
2be324ee 2464 break;
059ec3d9
PH
2465
2466 case opt_Kint:
2467 {
2468 int x = *((int *)value);
12f69989
PP
2469 if (!no_labels) printf("%s = ", name);
2470 if (x == 0) printf("0\n");
2be324ee
JH
2471 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2472 else printf("%dK\n", x);
059ec3d9 2473 }
2be324ee 2474 break;
059ec3d9
PH
2475
2476 case opt_octint:
2be324ee
JH
2477 if (!no_labels) printf("%s = ", name);
2478 printf("%#o\n", *((int *)value));
2479 break;
059ec3d9
PH
2480
2481 /* Can be negative only when "unset", in which case integer */
2482
2483 case opt_fixed:
2484 {
2485 int x = *((int *)value);
2486 int f = x % 1000;
2487 int d = 100;
2488 if (x < 0) printf("%s =\n", name); else
2489 {
12f69989
PP
2490 if (!no_labels) printf("%s = ", name);
2491 printf("%d.", x/1000);
059ec3d9
PH
2492 do
2493 {
2494 printf("%d", f/d);
2495 f %= d;
2496 d /= 10;
2497 }
2498 while (f != 0);
2499 printf("\n");
2500 }
2501 }
2be324ee 2502 break;
059ec3d9
PH
2503
2504 /* If the numerical value is unset, try for the string value */
2505
2506 case opt_expand_uid:
2be324ee 2507 if (! *get_set_flag(name, oltop, last, options_block))
059ec3d9 2508 {
2be324ee
JH
2509 sprintf(CS name2, "*expand_%.50s", name);
2510 if ((ol2 = find_option(name2, oltop, last)))
2511 {
2512 void *value2 = ol2->value;
2513 if (options_block)
2514 value2 = (void *)(US options_block + (long int)value2);
2515 s = *(USS value2);
2516 if (!no_labels) printf("%s = ", name);
2517 printf("%s\n", s ? string_printing(s) : US"");
2518 break;
2519 }
059ec3d9 2520 }
059ec3d9 2521
2be324ee 2522 /* Else fall through */
059ec3d9
PH
2523
2524 case opt_uid:
2be324ee
JH
2525 if (!no_labels) printf("%s = ", name);
2526 if (! *get_set_flag(name, oltop, last, options_block))
2527 printf("\n");
2528 else
2529 if ((pw = getpwuid(*((uid_t *)value))))
2530 printf("%s\n", pw->pw_name);
2531 else
2532 printf("%ld\n", (long int)(*((uid_t *)value)));
2533 break;
059ec3d9
PH
2534
2535 /* If the numerical value is unset, try for the string value */
2536
2537 case opt_expand_gid:
2be324ee 2538 if (! *get_set_flag(name, oltop, last, options_block))
059ec3d9 2539 {
2be324ee
JH
2540 sprintf(CS name2, "*expand_%.50s", name);
2541 if ( (ol2 = find_option(name2, oltop, last))
2542 && (ol2->type & opt_mask) == opt_stringptr)
2543 {
2544 void *value2 = ol2->value;
2545 if (options_block)
2546 value2 = (void *)(US options_block + (long int)value2);
2547 s = *(USS value2);
2548 if (!no_labels) printf("%s = ", name);
2549 printf("%s\n", s ? string_printing(s) : US"");
2550 break;
2551 }
059ec3d9 2552 }
059ec3d9 2553
2be324ee 2554 /* Else fall through */
059ec3d9
PH
2555
2556 case opt_gid:
2be324ee
JH
2557 if (!no_labels) printf("%s = ", name);
2558 if (! *get_set_flag(name, oltop, last, options_block))
2559 printf("\n");
2560 else
2561 if ((gr = getgrgid(*((int *)value))))
2562 printf("%s\n", gr->gr_name);
2563 else
2564 printf("%ld\n", (long int)(*((int *)value)));
2565 break;
059ec3d9
PH
2566
2567 case opt_uidlist:
2be324ee
JH
2568 uidlist = *((uid_t **)value);
2569 if (!no_labels) printf("%s =", name);
2570 if (uidlist)
059ec3d9 2571 {
2be324ee
JH
2572 int i;
2573 uschar sep = no_labels ? '\0' : ' ';
2574 for (i = 1; i <= (int)(uidlist[0]); i++)
2575 {
2576 uschar *name = NULL;
2577 if ((pw = getpwuid(uidlist[i]))) name = US pw->pw_name;
2578 if (sep != '\0') printf("%c", sep);
2579 if (name) printf("%s", name);
2580 else printf("%ld", (long int)(uidlist[i]));
2581 sep = ':';
2582 }
059ec3d9 2583 }
2be324ee
JH
2584 printf("\n");
2585 break;
059ec3d9
PH
2586
2587 case opt_gidlist:
2be324ee
JH
2588 gidlist = *((gid_t **)value);
2589 if (!no_labels) printf("%s =", name);
2590 if (gidlist)
059ec3d9 2591 {
2be324ee
JH
2592 int i;
2593 uschar sep = no_labels ? '\0' : ' ';
2594 for (i = 1; i <= (int)(gidlist[0]); i++)
2595 {
2596 uschar *name = NULL;
2597 if ((gr = getgrgid(gidlist[i]))) name = US gr->gr_name;
2598 if (sep != '\0') printf("%c", sep);
2599 if (name) printf("%s", name);
2600 else printf("%ld", (long int)(gidlist[i]));
2601 sep = ':';
2602 }
059ec3d9 2603 }
2be324ee
JH
2604 printf("\n");
2605 break;
059ec3d9
PH
2606
2607 case opt_time:
2be324ee
JH
2608 if (!no_labels) printf("%s = ", name);
2609 printf("%s\n", readconf_printtime(*((int *)value)));
2610 break;
059ec3d9
PH
2611
2612 case opt_timelist:
2613 {
2614 int i;
2615 int *list = (int *)value;
12f69989 2616 if (!no_labels) printf("%s = ", name);
059ec3d9 2617 for (i = 0; i < list[1]; i++)
2be324ee 2618 printf("%s%s", i == 0 ? "" : ":", readconf_printtime(list[i+2]));
059ec3d9
PH
2619 printf("\n");
2620 }
2be324ee 2621 break;
059ec3d9
PH
2622
2623 case opt_bit:
2be324ee
JH
2624 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2625 "" : "no_", name);
2626 break;
059ec3d9
PH
2627
2628 case opt_expand_bool:
2be324ee
JH
2629 sprintf(CS name2, "*expand_%.50s", name);
2630 if ((ol2 = find_option(name2, oltop, last)) && ol2->value)
059ec3d9 2631 {
2be324ee
JH
2632 void *value2 = ol2->value;
2633 if (options_block)
2634 value2 = (void *)(US options_block + (long int)value2);
2635 s = *(USS value2);
2636 if (s)
2637 {
2638 if (!no_labels) printf("%s = ", name);
2639 printf("%s\n", string_printing(s));
2640 break;
2641 }
2642 /* s == NULL => string not set; fall through */
059ec3d9 2643 }
059ec3d9 2644
2be324ee 2645 /* Fall through */
059ec3d9
PH
2646
2647 case opt_bool:
2648 case opt_bool_verify:
2649 case opt_bool_set:
2be324ee
JH
2650 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2651 break;
059ec3d9 2652 }
2be324ee 2653return TRUE;
059ec3d9
PH
2654}
2655
2656
2657
2658/*************************************************
2659* Print value from main configuration *
2660*************************************************/
2661
2662/* This function, called as a result of encountering the -bP option,
2663causes the value of any main configuration variable to be output if the
2664second argument is NULL. There are some special values:
2665
2666 all print all main configuration options
44f6c01d
HSHR
2667 config_file print the name of the configuration file
2668 (configure_file will still work, for backward
2669 compatibility)
059ec3d9
PH
2670 routers print the routers' configurations
2671 transports print the transports' configuration
2672 authenticators print the authenticators' configuration
5d9c27ec 2673 macros print the macros' configuration
059ec3d9
PH
2674 router_list print a list of router names
2675 transport_list print a list of transport names
2676 authenticator_list print a list of authentication mechanism names
5d9c27ec 2677 macro_list print a list of macro names
059ec3d9
PH
2678 +name print a named list item
2679 local_scan print the local_scan options
bf3c2c6b 2680 config print the configuration as it is parsed
bc3c7bb7 2681 environment print the used execution environment
059ec3d9 2682
5d9c27ec
TK
2683If the second argument is not NULL, it must be one of "router", "transport",
2684"authenticator" or "macro" in which case the first argument identifies the
2685driver whose options are to be printed.
059ec3d9
PH
2686
2687Arguments:
2688 name option name if type == NULL; else driver name
2689 type NULL or driver type name, as described above
12f69989 2690 no_labels avoid the "foo = " at the start of an item
059ec3d9 2691
2be324ee 2692Returns: Boolean success
059ec3d9
PH
2693*/
2694
2be324ee 2695BOOL
12f69989 2696readconf_print(uschar *name, uschar *type, BOOL no_labels)
059ec3d9
PH
2697{
2698BOOL names_only = FALSE;
2699optionlist *ol;
2700optionlist *ol2 = NULL;
2701driver_instance *d = NULL;
5d9c27ec 2702macro_item *m;
059ec3d9
PH
2703int size = 0;
2704
2be324ee 2705if (!type)
059ec3d9
PH
2706 {
2707 if (*name == '+')
2708 {
2709 int i;
2710 tree_node *t;
2711 BOOL found = FALSE;
2712 static uschar *types[] = { US"address", US"domain", US"host",
2713 US"localpart" };
2714 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2715 &hostlist_anchor, &localpartlist_anchor };
2716
2717 for (i = 0; i < 4; i++)
2be324ee 2718 if ((t = tree_search(*(anchors[i]), name+1)))
059ec3d9
PH
2719 {
2720 found = TRUE;
12f69989
PP
2721 if (no_labels)
2722 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2723 else
2724 printf("%slist %s = %s\n", types[i], name+1,
2725 ((namedlist_block *)(t->data.ptr))->string);
059ec3d9 2726 }
059ec3d9
PH
2727
2728 if (!found)
2729 printf("no address, domain, host, or local part list called \"%s\" "
2730 "exists\n", name+1);
2731
2be324ee 2732 return found;
059ec3d9
PH
2733 }
2734
d7bed771
JH
2735 if ( Ustrcmp(name, "configure_file") == 0
2736 || Ustrcmp(name, "config_file") == 0)
059ec3d9
PH
2737 {
2738 printf("%s\n", CS config_main_filename);
2be324ee 2739 return TRUE;
059ec3d9
PH
2740 }
2741
2742 if (Ustrcmp(name, "all") == 0)
2743 {
2744 for (ol = optionlist_config;
c0b9d3e8 2745 ol < optionlist_config + nelem(optionlist_config); ol++)
2be324ee
JH
2746 if (!(ol->type & opt_hidden))
2747 (void) print_ol(ol, US ol->name, NULL,
2748 optionlist_config, nelem(optionlist_config),
2749 no_labels);
2750 return TRUE;
059ec3d9
PH
2751 }
2752
2753 if (Ustrcmp(name, "local_scan") == 0)
2754 {
2be324ee 2755#ifndef LOCAL_SCAN_HAS_OPTIONS
059ec3d9 2756 printf("local_scan() options are not supported\n");
2be324ee
JH
2757 return FALSE;
2758#else
059ec3d9
PH
2759 for (ol = local_scan_options;
2760 ol < local_scan_options + local_scan_options_count; ol++)
2be324ee
JH
2761 (void) print_ol(ol, US ol->name, NULL, local_scan_options,
2762 local_scan_options_count, no_labels);
2763 return TRUE;
2764#endif
059ec3d9
PH
2765 }
2766
bf3c2c6b
HSHR
2767 if (Ustrcmp(name, "config") == 0)
2768 {
3257ed4b 2769 print_config(admin_user, no_labels);
2be324ee 2770 return TRUE;
bf3c2c6b
HSHR
2771 }
2772
059ec3d9
PH
2773 if (Ustrcmp(name, "routers") == 0)
2774 {
2775 type = US"router";
2776 name = NULL;
2777 }
2778 else if (Ustrcmp(name, "transports") == 0)
2779 {
2780 type = US"transport";
2781 name = NULL;
2782 }
059ec3d9
PH
2783 else if (Ustrcmp(name, "authenticators") == 0)
2784 {
2785 type = US"authenticator";
2786 name = NULL;
2787 }
5d9c27ec 2788 else if (Ustrcmp(name, "macros") == 0)
059ec3d9 2789 {
5d9c27ec 2790 type = US"macro";
059ec3d9 2791 name = NULL;
059ec3d9 2792 }
059ec3d9
PH
2793 else if (Ustrcmp(name, "router_list") == 0)
2794 {
2795 type = US"router";
2796 name = NULL;
2797 names_only = TRUE;
2798 }
2799 else if (Ustrcmp(name, "transport_list") == 0)
2800 {
2801 type = US"transport";
2802 name = NULL;
2803 names_only = TRUE;
2804 }
5d9c27ec
TK
2805 else if (Ustrcmp(name, "authenticator_list") == 0)
2806 {
2807 type = US"authenticator";
2808 name = NULL;
2809 names_only = TRUE;
2810 }
5d9c27ec
TK
2811 else if (Ustrcmp(name, "macro_list") == 0)
2812 {
2813 type = US"macro";
2814 name = NULL;
2815 names_only = TRUE;
2816 }
bc3c7bb7
HSHR
2817 else if (Ustrcmp(name, "environment") == 0)
2818 {
2819 if (environ)
2820 {
77560253 2821 uschar ** p;
bc3c7bb7 2822 for (p = USS environ; *p; p++) ;
84bbb4d8 2823 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
bc3c7bb7
HSHR
2824
2825 for (p = USS environ; *p; p++)
2826 {
77560253
JH
2827 uschar * q;
2828 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
f2cb6292 2829 puts(CS *p);
bc3c7bb7
HSHR
2830 }
2831 }
2be324ee 2832 return TRUE;
bc3c7bb7
HSHR
2833 }
2834
059ec3d9 2835 else
2be324ee
JH
2836 return print_ol(find_option(name,
2837 optionlist_config, nelem(optionlist_config)),
c0b9d3e8 2838 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
059ec3d9
PH
2839 }
2840
2841/* Handle the options for a router or transport. Skip options that are flagged
2842as hidden. Some of these are options with names starting with '*', used for
2843internal alternative representations of other options (which the printing
2844function will sort out). Others are synonyms kept for backward compatibility.
2845*/
2846
2847if (Ustrcmp(type, "router") == 0)
2848 {
2849 d = (driver_instance *)routers;
2850 ol2 = optionlist_routers;
2851 size = optionlist_routers_size;
2852 }
2853else if (Ustrcmp(type, "transport") == 0)
2854 {
2855 d = (driver_instance *)transports;
2856 ol2 = optionlist_transports;
2857 size = optionlist_transports_size;
2858 }
2859else if (Ustrcmp(type, "authenticator") == 0)
2860 {
2861 d = (driver_instance *)auths;
2862 ol2 = optionlist_auths;
2863 size = optionlist_auths_size;
2864 }
2865
5d9c27ec
TK
2866else if (Ustrcmp(type, "macro") == 0)
2867 {
2868 /* People store passwords in macros and they were previously not available
2869 for printing. So we have an admin_users restriction. */
2870 if (!admin_user)
2871 {
2872 fprintf(stderr, "exim: permission denied\n");
2be324ee 2873 return FALSE;
5d9c27ec 2874 }
1a7c9a48
JH
2875 for (m = macros; m; m = m->next)
2876 if (!name || Ustrcmp(name, m->name) == 0)
2be324ee 2877 {
1a7c9a48
JH
2878 if (names_only)
2879 printf("%s\n", CS m->name);
2880 else
2881 printf("%s=%s\n", CS m->name, CS m->replacement);
2882 if (name)
2883 return TRUE;
2be324ee 2884 }
1a7c9a48 2885 if (!name) return TRUE;
165acdd1 2886
1a7c9a48
JH
2887 printf("%s %s not found\n", type, name);
2888 return FALSE;
5d9c27ec
TK
2889 }
2890
059ec3d9
PH
2891if (names_only)
2892 {
165acdd1 2893 for (; d; d = d->next) printf("%s\n", CS d->name);
1a7c9a48 2894 return TRUE;
059ec3d9
PH
2895 }
2896
2897/* Either search for a given driver, or print all of them */
2898
165acdd1 2899for (; d; d = d->next)
059ec3d9 2900 {
2be324ee 2901 BOOL rc = FALSE;
165acdd1 2902 if (!name)
059ec3d9 2903 printf("\n%s %s:\n", d->name, type);
1a7c9a48 2904 else if (Ustrcmp(d->name, name) != 0) continue;
059ec3d9
PH
2905
2906 for (ol = ol2; ol < ol2 + size; ol++)
2be324ee
JH
2907 if (!(ol->type & opt_hidden))
2908 rc |= print_ol(ol, US ol->name, d, ol2, size, no_labels);
059ec3d9
PH
2909
2910 for (ol = d->info->options;
2911 ol < d->info->options + *(d->info->options_count); ol++)
2be324ee
JH
2912 if (!(ol->type & opt_hidden))
2913 rc |= print_ol(ol, US ol->name, d, d->info->options,
2914 *d->info->options_count, no_labels);
165acdd1 2915
2be324ee 2916 if (name) return rc;
059ec3d9 2917 }
2be324ee
JH
2918if (!name) return TRUE;
2919
2920printf("%s %s not found\n", type, name);
2921return FALSE;
059ec3d9
PH
2922}
2923
2924
2925
2926/*************************************************
2927* Read a named list item *
2928*************************************************/
2929
2930/* This function reads a name and a list (i.e. string). The name is used to
2931save the list in a tree, sorted by its name. Each entry also has a number,
2932which can be used for caching tests, but if the string contains any expansion
2933items other than $key, the number is set negative to inhibit caching. This
2934mechanism is used for domain, host, and address lists that are referenced by
2935the "+name" syntax.
2936
2937Arguments:
2938 anchorp points to the tree anchor
2939 numberp points to the current number for this tree
2940 max the maximum number permitted
2941 s the text of the option line, starting immediately after the name
2942 of the list type
2943 tname the name of the list type, for messages
2944
2945Returns: nothing
2946*/
2947
2948static void
2949read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2950 uschar *tname)
2951{
2952BOOL forcecache = FALSE;
2953uschar *ss;
2954tree_node *t;
2955namedlist_block *nb = store_get(sizeof(namedlist_block));
2956
2957if (Ustrncmp(s, "_cache", 6) == 0)
2958 {
2959 forcecache = TRUE;
2960 s += 6;
2961 }
2962
2963if (!isspace(*s))
2964 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2965
2966if (*numberp >= max)
2967 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2968 tname, max);
2969
2970while (isspace(*s)) s++;
2971ss = s;
2972while (isalnum(*s) || *s == '_') s++;
2973t = store_get(sizeof(tree_node) + s-ss);
2974Ustrncpy(t->name, ss, s-ss);
2975t->name[s-ss] = 0;
2976while (isspace(*s)) s++;
2977
2978if (!tree_insertnode(anchorp, t))
2979 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2980 "duplicate name \"%s\" for a named %s", t->name, tname);
2981
2982t->data.ptr = nb;
2983nb->number = *numberp;
2984*numberp += 1;
2985
2986if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2987 "missing '=' after \"%s\"", t->name);
2988while (isspace(*s)) s++;
2989nb->string = read_string(s, t->name);
2990nb->cache_data = NULL;
2991
2992/* Check the string for any expansions; if any are found, mark this list
2993uncacheable unless the user has explicited forced caching. */
2994
2995if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2996}
2997
2998
2999
3000
3001/*************************************************
3002* Unpick data for a rate limit *
3003*************************************************/
3004
3005/* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
3006separate values.
3007
3008Arguments:
3009 s string, in the form t,b,f,l
3010 where t is the threshold (integer)
3011 b is the initial delay (time)
3012 f is the multiplicative factor (fixed point)
3013 k is the maximum time (time)
3014 threshold where to store threshold
3015 base where to store base in milliseconds
3016 factor where to store factor in milliseconds
3017 limit where to store limit
3018
3019Returns: nothing (panics on error)
3020*/
3021
3022static void
3023unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
3024 int *limit)
3025{
3026uschar bstring[16], lstring[16];
3027
3028if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
3029 factor, lstring) == 4)
3030 {
3031 *base = readconf_readtime(bstring, 0, TRUE);
3032 *limit = readconf_readtime(lstring, 0, TRUE);
3033 if (*base >= 0 && *limit >= 0) return;
3034 }
3035log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
3036}
3037
3038
3039
3040
3041/*************************************************
3375e053
PP
3042* Drop privs for checking TLS config *
3043*************************************************/
3044
3045/* We want to validate TLS options during readconf, but do not want to be
3046root when we call into the TLS library, in case of library linkage errors
3047which cause segfaults; before this check, those were always done as the Exim
3048runtime user and it makes sense to continue with that.
3049
3050Assumes: tls_require_ciphers has been set, if it will be
3051 exim_user has been set, if it will be
3052 exim_group has been set, if it will be
3053
3054Returns: bool for "okay"; false will cause caller to immediately exit.
3055*/
3056
3057#ifdef SUPPORT_TLS
3058static BOOL
34e86e20 3059tls_dropprivs_validate_require_cipher(BOOL nowarn)
3375e053
PP
3060{
3061const uschar *errmsg;
3062pid_t pid;
3063int rc, status;
3064void (*oldsignal)(int);
3065
23f3dc67
JH
3066/* If TLS will never be used, no point checking ciphers */
3067
3068if ( !tls_advertise_hosts
3069 || !*tls_advertise_hosts
3070 || Ustrcmp(tls_advertise_hosts, ":") == 0
3071 )
3072 return TRUE;
34e86e20 3073else if (!nowarn && !tls_certificate)
23bb6982
JH
3074 log_write(0, LOG_MAIN,
3075 "Warning: No server certificate defined; will use a selfsigned one.\n"
23f3dc67
JH
3076 " Suggested action: either install a certificate or change tls_advertise_hosts option");
3077
3375e053
PP
3078oldsignal = signal(SIGCHLD, SIG_DFL);
3079
3080fflush(NULL);
3081if ((pid = fork()) < 0)
3082 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
3083
3084if (pid == 0)
3085 {
1d7a353e
PP
3086 /* in some modes, will have dropped privilege already */
3087 if (!geteuid())
3088 exim_setugid(exim_uid, exim_gid, FALSE,
3089 US"calling tls_validate_require_cipher");
3375e053 3090
cf0c6164 3091 if ((errmsg = tls_validate_require_cipher()))
3375e053
PP
3092 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3093 "tls_require_ciphers invalid: %s", errmsg);
3375e053
PP
3094 fflush(NULL);
3095 _exit(0);
3096 }
3097
3098do {
3099 rc = waitpid(pid, &status, 0);
3100} while (rc < 0 && errno == EINTR);
3101
9d26b8c0 3102DEBUG(D_tls)
3375e053
PP
3103 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
3104 (int)pid, status);
3105
3106signal(SIGCHLD, oldsignal);
3107
3108return status == 0;
3109}
3110#endif /* SUPPORT_TLS */
3111
3112
3113
3114
3115/*************************************************
059ec3d9
PH
3116* Read main configuration options *
3117*************************************************/
3118
3119/* This function is the first to be called for configuration reading. It
3120opens the configuration file and reads general configuration settings until
3121it reaches the end of the configuration section. The file is then left open so
3122that the remaining configuration data can subsequently be read if needed for
3123this run of Exim.
3124
3125The configuration file must be owned either by root or exim, and be writeable
3126only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3127in the config file, so the test is done on the compiled in values. A slight
3128anomaly, to be carefully documented.
3129
3130The name of the configuration file is taken from a list that is included in the
3131binary of Exim. It can be altered from the command line, but if that is done,
3132root privilege is immediately withdrawn unless the caller is root or exim.
3133The first file on the list that exists is used.
3134
3135For use on multiple systems that share file systems, first look for a
3136configuration file whose name has the current node name on the end. If that is
3137not found, try the generic name. For really contorted configurations, that run
3138multiple Exims with different uid settings, first try adding the effective uid
3139before the node name. These complications are going to waste resources on most
3140systems. Therefore they are available only when requested by compile-time
3141options. */
3142
3143void
34e86e20 3144readconf_main(BOOL nowarn)
059ec3d9
PH
3145{
3146int sep = 0;
3147struct stat statbuf;
3148uschar *s, *filename;
55414b25 3149const uschar *list = config_main_filelist;
059ec3d9
PH
3150
3151/* Loop through the possible file names */
3152
8e6c4db1 3153while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
059ec3d9 3154 {
bc3c7bb7 3155
059ec3d9
PH
3156 /* Cut out all the fancy processing unless specifically wanted */
3157
3158 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3159 uschar *suffix = filename + Ustrlen(filename);
3160
3161 /* Try for the node-specific file if a node name exists */
3162
3163 #ifdef CONFIGURE_FILE_USE_NODE
3164 struct utsname uts;
3165 if (uname(&uts) >= 0)
3166 {
3167 #ifdef CONFIGURE_FILE_USE_EUID
3168 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3169 config_file = Ufopen(filename, "rb");
3170 if (config_file == NULL)
3171 #endif /* CONFIGURE_FILE_USE_EUID */
3172 {
3173 sprintf(CS suffix, ".%.256s", uts.nodename);
3174 config_file = Ufopen(filename, "rb");
3175 }
3176 }
3177 #endif /* CONFIGURE_FILE_USE_NODE */
3178
3179 /* Otherwise, try the generic name, possibly with the euid added */
3180
3181 #ifdef CONFIGURE_FILE_USE_EUID
3182 if (config_file == NULL)
3183 {
3184 sprintf(CS suffix, ".%ld", (long int)original_euid);
3185 config_file = Ufopen(filename, "rb");
3186 }
3187 #endif /* CONFIGURE_FILE_USE_EUID */
3188
3189 /* Finally, try the unadorned name */
3190
3191 if (config_file == NULL)
3192 {
3193 *suffix = 0;
3194 config_file = Ufopen(filename, "rb");
3195 }
3196 #else /* if neither defined */
3197
3198 /* This is the common case when the fancy processing is not included. */
3199
3200 config_file = Ufopen(filename, "rb");
3201 #endif
3202
3203 /* If the file does not exist, continue to try any others. For any other
3204 error, break out (and die). */
3205
3206 if (config_file != NULL || errno != ENOENT) break;
3207 }
3208
3209/* On success, save the name for verification; config_filename is used when
3210logging configuration errors (it changes for .included files) whereas
3211config_main_filename is the name shown by -bP. Failure to open a configuration
3212file is a serious disaster. */
3213
8e7e1357 3214if (config_file)
059ec3d9 3215 {
8e7e1357 3216 uschar *last_slash = Ustrrchr(filename, '/');
059ec3d9 3217 config_filename = config_main_filename = string_copy(filename);
98b8312f 3218
8e7e1357
HSHR
3219 /* The config_main_directory we need for the $config_dir expansion.
3220 config_main_filename we need for $config_file expansion.
29f67888
HSHR
3221 And config_dir is the directory of the current configuration, used for
3222 relative .includes. We do need to know it's name, as we change our working
3223 directory later. */
3224
3225 if (filename[0] == '/')
8e7e1357 3226 config_main_directory = last_slash == filename ? US"/" : string_copyn(filename, last_slash - filename);
29f67888
HSHR
3227 else
3228 {
3229 /* relative configuration file name: working dir + / + basename(filename) */
3230
863bd541 3231 uschar buf[PATH_MAX];
acec9514 3232 gstring * g;
29f67888 3233
863bd541 3234 if (os_getcwd(buf, PATH_MAX) == NULL)
29f67888
HSHR
3235 {
3236 perror("exim: getcwd");
3237 exit(EXIT_FAILURE);
3238 }
acec9514 3239 g = string_cat(NULL, buf);
29f67888
HSHR
3240
3241 /* If the dir does not end with a "/", append one */
acec9514
JH
3242 if (g->s[g->ptr-1] != '/')
3243 g = string_catn(g, US"/", 1);
29f67888
HSHR
3244
3245 /* If the config file contains a "/", extract the directory part */
8e7e1357 3246 if (last_slash)
acec9514 3247 g = string_catn(g, filename, last_slash - filename);
8e7e1357 3248
acec9514 3249 config_main_directory = string_from_gstring(g);
29f67888
HSHR
3250 }
3251 config_directory = config_main_directory;
059ec3d9
PH
3252 }
3253else
3254 {
3255 if (filename == NULL)
3256 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3257 "%s", config_main_filelist);
3258 else
3259 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3260 "configuration file %s", filename));
3261 }
3262
29f67888
HSHR
3263/* Now, once we found and opened our configuration file, we change the directory
3264to a safe place. Later we change to $spool_directory. */
3265
3266if (Uchdir("/") < 0)
3267 {
3268 perror("exim: chdir `/': ");
3269 exit(EXIT_FAILURE);
3270 }
3271
e2f5dc15 3272/* Check the status of the file we have opened, if we have retained root
fea24b2e 3273privileges and the file isn't /dev/null (which *should* be 0666). */
059ec3d9 3274
fea24b2e 3275if (trusted_config && Ustrcmp(filename, US"/dev/null"))
059ec3d9
PH
3276 {
3277 if (fstat(fileno(config_file), &statbuf) != 0)
3278 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3279 big_buffer);
3280
c1d94452 3281 if ((statbuf.st_uid != root_uid /* owner not root */
059ec3d9
PH
3282 #ifdef CONFIGURE_OWNER
3283 && statbuf.st_uid != config_uid /* owner not the special one */
3284 #endif
3285 ) || /* or */
c1d94452 3286 (statbuf.st_gid != root_gid /* group not root & */
35edf2ff
PH
3287 #ifdef CONFIGURE_GROUP
3288 && statbuf.st_gid != config_gid /* group not the special one */
8e669ac1 3289 #endif
35edf2ff 3290 && (statbuf.st_mode & 020) != 0) || /* group writeable */
059ec3d9
PH
3291 /* or */
3292 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3293
3294 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3295 "wrong owner, group, or mode", big_buffer);
3296 }
3297
3298/* Process the main configuration settings. They all begin with a lower case
3299letter. If we see something starting with an upper case letter, it is taken as
3300a macro definition. */
3301
5bfe3b35 3302while ((s = get_config_line()))
059ec3d9 3303 {
af542dcf
HSHR
3304 if (config_lineno == 1 && Ustrstr(s, "\xef\xbb\xbf") == s)
3305 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3306 "found unexpected BOM (Byte Order Mark)");
3307
9650d98a
JH
3308 if (isupper(s[0]))
3309 { if (!macro_read_assignment(s)) exim_exit(EXIT_FAILURE, US""); }
059ec3d9
PH
3310
3311 else if (Ustrncmp(s, "domainlist", 10) == 0)
3312 read_named_list(&domainlist_anchor, &domainlist_count,
3313 MAX_NAMED_LIST, s+10, US"domain list");
3314
3315 else if (Ustrncmp(s, "hostlist", 8) == 0)
3316 read_named_list(&hostlist_anchor, &hostlist_count,
3317 MAX_NAMED_LIST, s+8, US"host list");
3318
3319 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3320 read_named_list(&addresslist_anchor, &addresslist_count,
3321 MAX_NAMED_LIST, s+11, US"address list");
3322
3323 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3324 read_named_list(&localpartlist_anchor, &localpartlist_count,
3325 MAX_NAMED_LIST, s+13, US"local part list");
3326
3327 else
3328 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3329 NULL, US"main option \"%s\" unknown");
3330 }
3331
3332
3333/* If local_sender_retain is set, local_from_check must be unset. */
3334
3335if (local_sender_retain && local_from_check)
3336 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3337 "local_sender_retain are set; this combination is not allowed");
3338
3339/* If the timezone string is empty, set it to NULL, implying no TZ variable
3340wanted. */
3341
3342if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3343
944a9c55
PH
3344/* The max retry interval must not be greater than 24 hours. */
3345
3346if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3347
059ec3d9
PH
3348/* remote_max_parallel must be > 0 */
3349
3350if (remote_max_parallel <= 0) remote_max_parallel = 1;
3351
6a3f1455
PH
3352/* Save the configured setting of freeze_tell, so we can re-instate it at the
3353start of a new SMTP message. */
3354
3355freeze_tell_config = freeze_tell;
3356
059ec3d9
PH
3357/* The primary host name may be required for expansion of spool_directory
3358and log_file_path, so make sure it is set asap. It is obtained from uname(),
3359but if that yields an unqualified value, make a FQDN by using gethostbyname to
3360canonize it. Some people like upper case letters in their host names, so we
3361don't force the case. */
3362
3363if (primary_hostname == NULL)
3364 {
55414b25 3365 const uschar *hostname;
059ec3d9
PH
3366 struct utsname uts;
3367 if (uname(&uts) < 0)
3368 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3369 hostname = US uts.nodename;
3370
3371 if (Ustrchr(hostname, '.') == NULL)
3372 {
3373 int af = AF_INET;
3374 struct hostent *hostdata;
3375
3376 #if HAVE_IPV6
7e66e54d 3377 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
55414b25
JH
3378 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3379 MCL_DOMAIN, TRUE, NULL) != OK))
059ec3d9
PH
3380 af = AF_INET6;
3381 #else
3382 af = AF_INET;
3383 #endif
3384
3385 for (;;)
3386 {
3387 #if HAVE_IPV6
3388 #if HAVE_GETIPNODEBYNAME
3389 int error_num;
3390 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3391 #else
3392 hostdata = gethostbyname2(CS hostname, af);
3393 #endif
3394 #else
3395 hostdata = gethostbyname(CS hostname);
3396 #endif
3397
3398 if (hostdata != NULL)
3399 {
3400 hostname = US hostdata->h_name;
3401 break;
3402 }
3403
3404 if (af == AF_INET) break;
3405 af = AF_INET;
3406 }
3407 }
3408
3409 primary_hostname = string_copy(hostname);
3410 }
3411
3412/* Set up default value for smtp_active_hostname */
3413
3414smtp_active_hostname = primary_hostname;
3415
3416/* If spool_directory wasn't set in the build-time configuration, it must have
3417got set above. Of course, writing to the log may not work if log_file_path is
3418not set, but it will at least get to syslog or somewhere, with any luck. */
3419
3420if (*spool_directory == 0)
3421 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3422 "proceed");
3423
3424/* Expand the spool directory name; it may, for example, contain the primary
3425host name. Same comment about failure. */
3426
3427s = expand_string(spool_directory);
3428if (s == NULL)
3429 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3430 "\"%s\": %s", spool_directory, expand_string_message);
3431spool_directory = s;
3432
3433/* Expand log_file_path, which must contain "%s" in any component that isn't
f1e5fef5
PP
3434the null string or "syslog". It is also allowed to contain one instance of %D
3435or %M. However, it must NOT contain % followed by anything else. */
059ec3d9
PH
3436
3437if (*log_file_path != 0)
3438 {
55414b25 3439 const uschar *ss, *sss;
059ec3d9
PH
3440 int sep = ':'; /* Fixed for log file path */
3441 s = expand_string(log_file_path);
3442 if (s == NULL)
3443 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3444 "\"%s\": %s", log_file_path, expand_string_message);
3445
3446 ss = s;
3447 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3448 {
3449 uschar *t;
3450 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3451 t = Ustrstr(sss, "%s");
3452 if (t == NULL)
3453 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3454 "contain \"%%s\"", sss);
3455 *t = 'X';
3456 t = Ustrchr(sss, '%');
3457 if (t != NULL)
3458 {
f1e5fef5 3459 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
059ec3d9
PH
3460 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3461 "unexpected \"%%\" character", s);
3462 }
3463 }
3464
3465 log_file_path = s;
3466 }
3467
3468/* Interpret syslog_facility into an integer argument for 'ident' param to
3469openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3470leading "log_". */
3471
5bfe3b35 3472if (syslog_facility_str)
059ec3d9
PH
3473 {
3474 int i;
3475 uschar *s = syslog_facility_str;
3476
3477 if ((Ustrlen(syslog_facility_str) >= 4) &&
3478 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3479 s += 4;
3480
3481 for (i = 0; i < syslog_list_size; i++)
059ec3d9
PH
3482 if (strcmpic(s, syslog_list[i].name) == 0)
3483 {
3484 syslog_facility = syslog_list[i].value;
3485 break;
3486 }
059ec3d9
PH
3487
3488 if (i >= syslog_list_size)
059ec3d9
PH
3489 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3490 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
059ec3d9
PH
3491 }
3492
3493/* Expand pid_file_path */
3494
3495if (*pid_file_path != 0)
3496 {
5bfe3b35 3497 if (!(s = expand_string(pid_file_path)))
059ec3d9
PH
3498 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3499 "\"%s\": %s", pid_file_path, expand_string_message);
3500 pid_file_path = s;
3501 }
3502
921b12ca
TF
3503/* Set default value of process_log_path */
3504
5bfe3b35 3505if (!process_log_path || *process_log_path =='\0')
921b12ca
TF
3506 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3507
059ec3d9
PH
3508/* Compile the regex for matching a UUCP-style "From_" line in an incoming
3509message. */
3510
3511regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3512
3513/* Unpick the SMTP rate limiting options, if set */
3514
5bfe3b35 3515if (smtp_ratelimit_mail)
059ec3d9
PH
3516 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3517 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
059ec3d9 3518
5bfe3b35 3519if (smtp_ratelimit_rcpt)
059ec3d9
PH
3520 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3521 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
059ec3d9
PH
3522
3523/* The qualify domains default to the primary host name */
3524
5bfe3b35 3525if (!qualify_domain_sender)
059ec3d9 3526 qualify_domain_sender = primary_hostname;
5bfe3b35 3527if (!qualify_domain_recipient)
059ec3d9
PH
3528 qualify_domain_recipient = qualify_domain_sender;
3529
3530/* Setting system_filter_user in the configuration sets the gid as well if a
3531name is given, but a numerical value does not. */
3532
3533if (system_filter_uid_set && !system_filter_gid_set)
3534 {
3535 struct passwd *pw = getpwuid(system_filter_uid);
5bfe3b35 3536 if (!pw)
059ec3d9
PH
3537 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3538 (long int)system_filter_uid);
3539 system_filter_gid = pw->pw_gid;
3540 system_filter_gid_set = TRUE;
3541 }
3542
3543/* If the errors_reply_to field is set, check that it is syntactically valid
3544and ensure it contains a domain. */
3545
5bfe3b35 3546if (errors_reply_to)
059ec3d9
PH
3547 {
3548 uschar *errmess;
3549 int start, end, domain;
3550 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3551 &start, &end, &domain, FALSE);
3552
5bfe3b35 3553 if (!recipient)
059ec3d9
PH
3554 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3555 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3556
3557 if (domain == 0)
3558 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3559 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3560 }
3561
3562/* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3563smtp_accept_max must also be set. */
3564
3565if (smtp_accept_max == 0 &&
3566 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3567 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3568 "smtp_accept_max must be set if smtp_accept_queue or "
3569 "smtp_accept_max_per_host is set");
3570
3571/* Set up the host number if anything is specified. It is an expanded string
3572so that it can be computed from the host name, for example. We do this last
3573so as to ensure that everything else is set up before the expansion. */
3574
5bfe3b35 3575if (host_number_string)
059ec3d9 3576 {
ef840681 3577 long int n;
059ec3d9
PH
3578 uschar *end;
3579 uschar *s = expand_string(host_number_string);
5bfe3b35
JH
3580
3581 if (!s)
ef840681
PP
3582 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3583 "failed to expand localhost_number \"%s\": %s",
3584 host_number_string, expand_string_message);
3585 n = Ustrtol(s, &end, 0);
059ec3d9
PH
3586 while (isspace(*end)) end++;
3587 if (*end != 0)
3588 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3589 "localhost_number value is not a number: %s", s);
3590 if (n > LOCALHOST_MAX)
3591 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3592 "localhost_number is greater than the maximum allowed value (%d)",
3593 LOCALHOST_MAX);
3594 host_number = n;
3595 }
3596
3597#ifdef SUPPORT_TLS
3598/* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3599
5bfe3b35 3600if ((tls_verify_hosts || tls_try_verify_hosts) && !tls_verify_certificates)
059ec3d9
PH
3601 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3602 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
5bfe3b35 3603 tls_verify_hosts ? "" : "try_");
77bb000f 3604
3375e053
PP
3605/* This also checks that the library linkage is working and we can call
3606routines in it, so call even if tls_require_ciphers is unset */
34e86e20 3607if (!tls_dropprivs_validate_require_cipher(nowarn))
3375e053
PP
3608 exit(1);
3609
3610/* Magic number: at time of writing, 1024 has been the long-standing value
3611used by so many clients, and what Exim used to use always, that it makes
3612sense to just min-clamp this max-clamp at that. */
3613if (tls_dh_max_bits < 1024)
3614 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3615 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3616
77bb000f 3617/* If openssl_options is set, validate it */
7006ee24 3618if (openssl_options)
77bb000f
PP
3619 {
3620# ifdef USE_GNUTLS
3621 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3622 "openssl_options is set but we're using GnuTLS");
77bb000f
PP
3623# else
3624 long dummy;
7006ee24 3625 if (!tls_openssl_options_parse(openssl_options, &dummy))
77bb000f 3626 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3627 "openssl_options parse error: %s", openssl_options);
77bb000f
PP
3628# endif
3629 }
32d07012 3630#endif /*SUPPORT_TLS*/
bc3c7bb7 3631
34e86e20 3632if (!nowarn && !keep_environment && environ && *environ)
bc3c7bb7 3633 log_write(0, LOG_MAIN,
8e58ed80
HSHR
3634 "Warning: purging the environment.\n"
3635 " Suggested action: use keep_environment.");
059ec3d9
PH
3636}
3637
3638
3639
3640/*************************************************
3641* Initialize one driver *
3642