1 /* $NetBSD: cleanup_init.c,v 1.6 2020/03/18 19:05:15 christos Exp $ */ 2 3 /*++ 4 /* NAME 5 /* cleanup_init 3 6 /* SUMMARY 7 /* cleanup callable interface, initializations 8 /* SYNOPSIS 9 /* #include "cleanup.h" 10 /* 11 /* CONFIG_BOOL_TABLE cleanup_bool_table[]; 12 /* 13 /* CONFIG_INT_TABLE cleanup_int_table[]; 14 /* 15 /* CONFIG_BOOL_TABLE cleanup_bool_table[]; 16 /* 17 /* CONFIG_STR_TABLE cleanup_str_table[]; 18 /* 19 /* CONFIG_TIME_TABLE cleanup_time_table[]; 20 /* 21 /* void cleanup_pre_jail(service_name, argv) 22 /* char *service_name; 23 /* char **argv; 24 /* 25 /* void cleanup_post_jail(service_name, argv) 26 /* char *service_name; 27 /* char **argv; 28 /* 29 /* char *cleanup_path; 30 /* VSTRING *cleanup_trace_path; 31 /* 32 /* void cleanup_all() 33 /* 34 /* void cleanup_sig(sigval) 35 /* int sigval; 36 /* DESCRIPTION 37 /* This module implements a callable interface to the cleanup service 38 /* for one-time initializations that must be done before any message 39 /* processing can take place. 40 /* 41 /* cleanup_{bool,int,str,time}_table[] specify configuration 42 /* parameters that must be initialized before calling any functions 43 /* in this module. These tables satisfy the interface as specified in 44 /* single_service(3). 45 /* 46 /* cleanup_pre_jail() and cleanup_post_jail() perform mandatory 47 /* initializations before and after the process enters the optional 48 /* chroot jail. These functions satisfy the interface as specified 49 /* in single_service(3). 50 /* 51 /* cleanup_path is either a null pointer or it is the name of a queue 52 /* file that currently is being written. This information is used 53 /* by cleanup_all() to remove incomplete files after a fatal error, 54 /* or by cleanup_sig() after arrival of a SIGTERM signal. 55 /* 56 /* cleanup_trace_path is either a null pointer or the pathname of a 57 /* trace logfile with DSN SUCCESS notifications. This information is 58 /* used to remove a trace file when the mail transaction is canceled. 59 /* 60 /* cleanup_all() must be called in case of fatal error, in order 61 /* to remove an incomplete queue file. 62 /* 63 /* cleanup_sig() must be called in case of SIGTERM, in order 64 /* to remove an incomplete queue file. 65 /* DIAGNOSTICS 66 /* Problems and transactions are logged to \fBsyslogd\fR(8) 67 /* or \fBpostlogd\fR(8). 68 /* SEE ALSO 69 /* cleanup_api(3) cleanup callable interface, message processing 70 /* LICENSE 71 /* .ad 72 /* .fi 73 /* The Secure Mailer license must be distributed with this software. 74 /* AUTHOR(S) 75 /* Wietse Venema 76 /* IBM T.J. Watson Research 77 /* P.O. Box 704 78 /* Yorktown Heights, NY 10598, USA 79 /* 80 /* Wietse Venema 81 /* Google, Inc. 82 /* 111 8th Avenue 83 /* New York, NY 10011, USA 84 /*--*/ 85 86 /* System library. */ 87 88 #include <sys_defs.h> 89 #include <signal.h> 90 #include <string.h> 91 92 /* Utility library. */ 93 94 #include <msg.h> 95 #include <iostuff.h> 96 #include <name_code.h> 97 #include <name_mask.h> 98 #include <stringops.h> 99 100 /* Global library. */ 101 102 #include <mail_addr.h> 103 #include <mail_params.h> 104 #include <mail_version.h> /* milter_macro_v */ 105 #include <ext_prop.h> 106 #include <flush_clnt.h> 107 108 /* Application-specific. */ 109 110 #include "cleanup.h" 111 112 /* 113 * Global state: any queue files that we have open, so that the error 114 * handler can clean up in case of trouble. 115 */ 116 char *cleanup_path; /* queue file name */ 117 118 /* 119 * Another piece of global state: pathnames of partial bounce or trace 120 * logfiles that need to be cleaned up when the cleanup request is aborted. 121 */ 122 VSTRING *cleanup_trace_path; 123 124 /* 125 * Tunable parameters. 126 */ 127 int var_hopcount_limit; /* max mailer hop count */ 128 char *var_canonical_maps; /* common canonical maps */ 129 char *var_send_canon_maps; /* sender canonical maps */ 130 char *var_rcpt_canon_maps; /* recipient canonical maps */ 131 char *var_canon_classes; /* what to canonicalize */ 132 char *var_send_canon_classes; /* what sender to canonicalize */ 133 char *var_rcpt_canon_classes; /* what recipient to canonicalize */ 134 char *var_virt_alias_maps; /* virtual alias maps */ 135 char *var_masq_domains; /* masquerade domains */ 136 char *var_masq_exceptions; /* users not masqueraded */ 137 char *var_header_checks; /* primary header checks */ 138 char *var_mimehdr_checks; /* mime header checks */ 139 char *var_nesthdr_checks; /* nested header checks */ 140 char *var_body_checks; /* any body checks */ 141 int var_dup_filter_limit; /* recipient dup filter */ 142 char *var_empty_addr; /* destination of bounced bounces */ 143 int var_delay_warn_time; /* delay that triggers warning */ 144 char *var_prop_extension; /* propagate unmatched extension */ 145 char *var_always_bcc; /* big brother */ 146 char *var_rcpt_witheld; /* recipients not disclosed */ 147 bool var_canon_env_rcpt; /* canonicalize envelope recipient */ 148 char *var_masq_classes; /* what to masquerade */ 149 int var_qattr_count_limit; /* named attribute limit */ 150 int var_virt_recur_limit; /* maximum virtual alias recursion */ 151 int var_virt_expan_limit; /* maximum virtual alias expansion */ 152 int var_body_check_len; /* when to stop body scan */ 153 char *var_send_bcc_maps; /* sender auto-bcc maps */ 154 char *var_rcpt_bcc_maps; /* recipient auto-bcc maps */ 155 char *var_remote_rwr_domain; /* header-only surrogate */ 156 char *var_msg_reject_chars; /* reject these characters */ 157 char *var_msg_strip_chars; /* strip these characters */ 158 int var_verp_bounce_off; /* don't verp the bounces */ 159 int var_milt_conn_time; /* milter connect/handshake timeout */ 160 int var_milt_cmd_time; /* milter command timeout */ 161 int var_milt_msg_time; /* milter content timeout */ 162 char *var_milt_protocol; /* Sendmail 8 milter protocol */ 163 char *var_milt_def_action; /* default milter action */ 164 char *var_milt_daemon_name; /* {daemon_name} macro value */ 165 char *var_milt_v; /* {v} macro value */ 166 char *var_milt_conn_macros; /* connect macros */ 167 char *var_milt_helo_macros; /* HELO macros */ 168 char *var_milt_mail_macros; /* MAIL FROM macros */ 169 char *var_milt_rcpt_macros; /* RCPT TO macros */ 170 char *var_milt_data_macros; /* DATA macros */ 171 char *var_milt_eoh_macros; /* end-of-header macros */ 172 char *var_milt_eod_macros; /* end-of-data macros */ 173 char *var_milt_unk_macros; /* unknown command macros */ 174 char *var_cleanup_milters; /* non-SMTP mail */ 175 char *var_milt_head_checks; /* post-Milter header checks */ 176 char *var_milt_macro_deflts; /* default macro settings */ 177 int var_auto_8bit_enc_hdr; /* auto-detect 8bit encoding header */ 178 int var_always_add_hdrs; /* always add missing headers */ 179 int var_virt_addrlen_limit; /* stop exponential growth */ 180 char *var_hfrom_format; /* header_from_format */ 181 182 const CONFIG_INT_TABLE cleanup_int_table[] = { 183 VAR_HOPCOUNT_LIMIT, DEF_HOPCOUNT_LIMIT, &var_hopcount_limit, 1, 0, 184 VAR_DUP_FILTER_LIMIT, DEF_DUP_FILTER_LIMIT, &var_dup_filter_limit, 0, 0, 185 VAR_QATTR_COUNT_LIMIT, DEF_QATTR_COUNT_LIMIT, &var_qattr_count_limit, 1, 0, 186 VAR_VIRT_RECUR_LIMIT, DEF_VIRT_RECUR_LIMIT, &var_virt_recur_limit, 1, 0, 187 VAR_VIRT_EXPAN_LIMIT, DEF_VIRT_EXPAN_LIMIT, &var_virt_expan_limit, 1, 0, 188 VAR_VIRT_ADDRLEN_LIMIT, DEF_VIRT_ADDRLEN_LIMIT, &var_virt_addrlen_limit, 1, 0, 189 VAR_BODY_CHECK_LEN, DEF_BODY_CHECK_LEN, &var_body_check_len, 0, 0, 190 0, 191 }; 192 193 const CONFIG_BOOL_TABLE cleanup_bool_table[] = { 194 VAR_VERP_BOUNCE_OFF, DEF_VERP_BOUNCE_OFF, &var_verp_bounce_off, 195 VAR_AUTO_8BIT_ENC_HDR, DEF_AUTO_8BIT_ENC_HDR, &var_auto_8bit_enc_hdr, 196 VAR_ALWAYS_ADD_HDRS, DEF_ALWAYS_ADD_HDRS, &var_always_add_hdrs, 197 0, 198 }; 199 200 const CONFIG_TIME_TABLE cleanup_time_table[] = { 201 VAR_DELAY_WARN_TIME, DEF_DELAY_WARN_TIME, &var_delay_warn_time, 0, 0, 202 VAR_MILT_CONN_TIME, DEF_MILT_CONN_TIME, &var_milt_conn_time, 1, 0, 203 VAR_MILT_CMD_TIME, DEF_MILT_CMD_TIME, &var_milt_cmd_time, 1, 0, 204 VAR_MILT_MSG_TIME, DEF_MILT_MSG_TIME, &var_milt_msg_time, 1, 0, 205 0, 206 }; 207 208 const CONFIG_STR_TABLE cleanup_str_table[] = { 209 VAR_CANONICAL_MAPS, DEF_CANONICAL_MAPS, &var_canonical_maps, 0, 0, 210 VAR_SEND_CANON_MAPS, DEF_SEND_CANON_MAPS, &var_send_canon_maps, 0, 0, 211 VAR_RCPT_CANON_MAPS, DEF_RCPT_CANON_MAPS, &var_rcpt_canon_maps, 0, 0, 212 VAR_CANON_CLASSES, DEF_CANON_CLASSES, &var_canon_classes, 1, 0, 213 VAR_SEND_CANON_CLASSES, DEF_SEND_CANON_CLASSES, &var_send_canon_classes, 1, 0, 214 VAR_RCPT_CANON_CLASSES, DEF_RCPT_CANON_CLASSES, &var_rcpt_canon_classes, 1, 0, 215 VAR_VIRT_ALIAS_MAPS, DEF_VIRT_ALIAS_MAPS, &var_virt_alias_maps, 0, 0, 216 VAR_MASQ_DOMAINS, DEF_MASQ_DOMAINS, &var_masq_domains, 0, 0, 217 VAR_EMPTY_ADDR, DEF_EMPTY_ADDR, &var_empty_addr, 1, 0, 218 VAR_MASQ_EXCEPTIONS, DEF_MASQ_EXCEPTIONS, &var_masq_exceptions, 0, 0, 219 VAR_HEADER_CHECKS, DEF_HEADER_CHECKS, &var_header_checks, 0, 0, 220 VAR_MIMEHDR_CHECKS, DEF_MIMEHDR_CHECKS, &var_mimehdr_checks, 0, 0, 221 VAR_NESTHDR_CHECKS, DEF_NESTHDR_CHECKS, &var_nesthdr_checks, 0, 0, 222 VAR_BODY_CHECKS, DEF_BODY_CHECKS, &var_body_checks, 0, 0, 223 VAR_PROP_EXTENSION, DEF_PROP_EXTENSION, &var_prop_extension, 0, 0, 224 VAR_ALWAYS_BCC, DEF_ALWAYS_BCC, &var_always_bcc, 0, 0, 225 VAR_RCPT_WITHELD, DEF_RCPT_WITHELD, &var_rcpt_witheld, 0, 0, 226 VAR_MASQ_CLASSES, DEF_MASQ_CLASSES, &var_masq_classes, 0, 0, 227 VAR_SEND_BCC_MAPS, DEF_SEND_BCC_MAPS, &var_send_bcc_maps, 0, 0, 228 VAR_RCPT_BCC_MAPS, DEF_RCPT_BCC_MAPS, &var_rcpt_bcc_maps, 0, 0, 229 VAR_REM_RWR_DOMAIN, DEF_REM_RWR_DOMAIN, &var_remote_rwr_domain, 0, 0, 230 VAR_MSG_REJECT_CHARS, DEF_MSG_REJECT_CHARS, &var_msg_reject_chars, 0, 0, 231 VAR_MSG_STRIP_CHARS, DEF_MSG_STRIP_CHARS, &var_msg_strip_chars, 0, 0, 232 VAR_MILT_PROTOCOL, DEF_MILT_PROTOCOL, &var_milt_protocol, 1, 0, 233 VAR_MILT_DEF_ACTION, DEF_MILT_DEF_ACTION, &var_milt_def_action, 1, 0, 234 VAR_MILT_DAEMON_NAME, DEF_MILT_DAEMON_NAME, &var_milt_daemon_name, 1, 0, 235 VAR_MILT_V, DEF_MILT_V, &var_milt_v, 1, 0, 236 VAR_MILT_CONN_MACROS, DEF_MILT_CONN_MACROS, &var_milt_conn_macros, 0, 0, 237 VAR_MILT_HELO_MACROS, DEF_MILT_HELO_MACROS, &var_milt_helo_macros, 0, 0, 238 VAR_MILT_MAIL_MACROS, DEF_MILT_MAIL_MACROS, &var_milt_mail_macros, 0, 0, 239 VAR_MILT_RCPT_MACROS, DEF_MILT_RCPT_MACROS, &var_milt_rcpt_macros, 0, 0, 240 VAR_MILT_DATA_MACROS, DEF_MILT_DATA_MACROS, &var_milt_data_macros, 0, 0, 241 VAR_MILT_EOH_MACROS, DEF_MILT_EOH_MACROS, &var_milt_eoh_macros, 0, 0, 242 VAR_MILT_EOD_MACROS, DEF_MILT_EOD_MACROS, &var_milt_eod_macros, 0, 0, 243 VAR_MILT_UNK_MACROS, DEF_MILT_UNK_MACROS, &var_milt_unk_macros, 0, 0, 244 VAR_CLEANUP_MILTERS, DEF_CLEANUP_MILTERS, &var_cleanup_milters, 0, 0, 245 VAR_MILT_HEAD_CHECKS, DEF_MILT_HEAD_CHECKS, &var_milt_head_checks, 0, 0, 246 VAR_MILT_MACRO_DEFLTS, DEF_MILT_MACRO_DEFLTS, &var_milt_macro_deflts, 0, 0, 247 VAR_HFROM_FORMAT, DEF_HFROM_FORMAT, &var_hfrom_format, 1, 0, 248 0, 249 }; 250 251 /* 252 * Mappings. 253 */ 254 MAPS *cleanup_comm_canon_maps; 255 MAPS *cleanup_send_canon_maps; 256 MAPS *cleanup_rcpt_canon_maps; 257 int cleanup_comm_canon_flags; 258 int cleanup_send_canon_flags; 259 int cleanup_rcpt_canon_flags; 260 MAPS *cleanup_header_checks; 261 MAPS *cleanup_mimehdr_checks; 262 MAPS *cleanup_nesthdr_checks; 263 MAPS *cleanup_body_checks; 264 MAPS *cleanup_virt_alias_maps; 265 ARGV *cleanup_masq_domains; 266 STRING_LIST *cleanup_masq_exceptions; 267 int cleanup_masq_flags; 268 MAPS *cleanup_send_bcc_maps; 269 MAPS *cleanup_rcpt_bcc_maps; 270 271 /* 272 * Character filters. 273 */ 274 VSTRING *cleanup_reject_chars; 275 VSTRING *cleanup_strip_chars; 276 277 /* 278 * Address extension propagation restrictions. 279 */ 280 int cleanup_ext_prop_mask; 281 282 /* 283 * Milter support. 284 */ 285 MILTERS *cleanup_milters; 286 287 /* 288 * From: header format. 289 */ 290 int hfrom_format_code; 291 292 /* cleanup_all - callback for the runtime error handler */ 293 294 void cleanup_all(void) 295 { 296 cleanup_sig(0); 297 } 298 299 /* cleanup_sig - callback for the SIGTERM handler */ 300 301 void cleanup_sig(int sig) 302 { 303 304 /* 305 * msg_fatal() is safe against calling itself recursively, but signals 306 * need extra safety. 307 * 308 * XXX While running as a signal handler, can't ask the memory manager to 309 * release VSTRING storage. 310 */ 311 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) { 312 if (cleanup_trace_path) { 313 (void) REMOVE(vstring_str(cleanup_trace_path)); 314 cleanup_trace_path = 0; 315 } 316 if (cleanup_path) { 317 (void) REMOVE(cleanup_path); 318 cleanup_path = 0; 319 } 320 if (sig) 321 _exit(sig); 322 } 323 } 324 325 /* cleanup_pre_jail - initialize before entering the chroot jail */ 326 327 void cleanup_pre_jail(char *unused_name, char **unused_argv) 328 { 329 static const NAME_MASK send_canon_class_table[] = { 330 CANON_CLASS_ENV_FROM, CLEANUP_CANON_FLAG_ENV_FROM, 331 CANON_CLASS_HDR_FROM, CLEANUP_CANON_FLAG_HDR_FROM, 332 0, 333 }; 334 static const NAME_MASK rcpt_canon_class_table[] = { 335 CANON_CLASS_ENV_RCPT, CLEANUP_CANON_FLAG_ENV_RCPT, 336 CANON_CLASS_HDR_RCPT, CLEANUP_CANON_FLAG_HDR_RCPT, 337 0, 338 }; 339 static const NAME_MASK canon_class_table[] = { 340 CANON_CLASS_ENV_FROM, CLEANUP_CANON_FLAG_ENV_FROM, 341 CANON_CLASS_ENV_RCPT, CLEANUP_CANON_FLAG_ENV_RCPT, 342 CANON_CLASS_HDR_FROM, CLEANUP_CANON_FLAG_HDR_FROM, 343 CANON_CLASS_HDR_RCPT, CLEANUP_CANON_FLAG_HDR_RCPT, 344 0, 345 }; 346 static const NAME_MASK masq_class_table[] = { 347 MASQ_CLASS_ENV_FROM, CLEANUP_MASQ_FLAG_ENV_FROM, 348 MASQ_CLASS_ENV_RCPT, CLEANUP_MASQ_FLAG_ENV_RCPT, 349 MASQ_CLASS_HDR_FROM, CLEANUP_MASQ_FLAG_HDR_FROM, 350 MASQ_CLASS_HDR_RCPT, CLEANUP_MASQ_FLAG_HDR_RCPT, 351 0, 352 }; 353 354 if (*var_canonical_maps) 355 cleanup_comm_canon_maps = 356 maps_create(VAR_CANONICAL_MAPS, var_canonical_maps, 357 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 358 | DICT_FLAG_UTF8_REQUEST); 359 if (*var_send_canon_maps) 360 cleanup_send_canon_maps = 361 maps_create(VAR_SEND_CANON_MAPS, var_send_canon_maps, 362 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 363 | DICT_FLAG_UTF8_REQUEST); 364 if (*var_rcpt_canon_maps) 365 cleanup_rcpt_canon_maps = 366 maps_create(VAR_RCPT_CANON_MAPS, var_rcpt_canon_maps, 367 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 368 | DICT_FLAG_UTF8_REQUEST); 369 if (*var_virt_alias_maps) 370 cleanup_virt_alias_maps = maps_create(VAR_VIRT_ALIAS_MAPS, 371 var_virt_alias_maps, 372 DICT_FLAG_LOCK 373 | DICT_FLAG_FOLD_FIX 374 | DICT_FLAG_UTF8_REQUEST); 375 if (*var_canon_classes) 376 cleanup_comm_canon_flags = 377 name_mask(VAR_CANON_CLASSES, canon_class_table, 378 var_canon_classes); 379 if (*var_send_canon_classes) 380 cleanup_send_canon_flags = 381 name_mask(VAR_CANON_CLASSES, send_canon_class_table, 382 var_send_canon_classes); 383 if (*var_rcpt_canon_classes) 384 cleanup_rcpt_canon_flags = 385 name_mask(VAR_CANON_CLASSES, rcpt_canon_class_table, 386 var_rcpt_canon_classes); 387 if (*var_masq_domains) 388 cleanup_masq_domains = argv_split(var_masq_domains, CHARS_COMMA_SP); 389 if (*var_header_checks) 390 cleanup_header_checks = 391 maps_create(VAR_HEADER_CHECKS, var_header_checks, DICT_FLAG_LOCK); 392 if (*var_mimehdr_checks) 393 cleanup_mimehdr_checks = 394 maps_create(VAR_MIMEHDR_CHECKS, var_mimehdr_checks, DICT_FLAG_LOCK); 395 if (*var_nesthdr_checks) 396 cleanup_nesthdr_checks = 397 maps_create(VAR_NESTHDR_CHECKS, var_nesthdr_checks, DICT_FLAG_LOCK); 398 if (*var_body_checks) 399 cleanup_body_checks = 400 maps_create(VAR_BODY_CHECKS, var_body_checks, DICT_FLAG_LOCK); 401 if (*var_masq_exceptions) 402 cleanup_masq_exceptions = 403 string_list_init(VAR_MASQ_EXCEPTIONS, MATCH_FLAG_RETURN, 404 var_masq_exceptions); 405 if (*var_masq_classes) 406 cleanup_masq_flags = name_mask(VAR_MASQ_CLASSES, masq_class_table, 407 var_masq_classes); 408 if (*var_send_bcc_maps) 409 cleanup_send_bcc_maps = 410 maps_create(VAR_SEND_BCC_MAPS, var_send_bcc_maps, 411 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 412 | DICT_FLAG_UTF8_REQUEST); 413 if (*var_rcpt_bcc_maps) 414 cleanup_rcpt_bcc_maps = 415 maps_create(VAR_RCPT_BCC_MAPS, var_rcpt_bcc_maps, 416 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 417 | DICT_FLAG_UTF8_REQUEST); 418 if (*var_cleanup_milters) 419 cleanup_milters = milter_create(var_cleanup_milters, 420 var_milt_conn_time, 421 var_milt_cmd_time, 422 var_milt_msg_time, 423 var_milt_protocol, 424 var_milt_def_action, 425 var_milt_conn_macros, 426 var_milt_helo_macros, 427 var_milt_mail_macros, 428 var_milt_rcpt_macros, 429 var_milt_data_macros, 430 var_milt_eoh_macros, 431 var_milt_eod_macros, 432 var_milt_unk_macros, 433 var_milt_macro_deflts); 434 435 flush_init(); 436 } 437 438 /* cleanup_post_jail - initialize after entering the chroot jail */ 439 440 void cleanup_post_jail(char *unused_name, char **unused_argv) 441 { 442 static const NAME_CODE hfrom_format_table[] = { 443 HFROM_FORMAT_NAME_STD, HFROM_FORMAT_CODE_STD, 444 HFROM_FORMAT_NAME_OBS, HFROM_FORMAT_CODE_OBS, 445 0, -1, 446 }; 447 448 /* 449 * Optionally set the file size resource limit. XXX This limits the 450 * message content to somewhat less than requested, because the total 451 * queue file size also includes envelope information. Unless people set 452 * really low limit, the difference is going to matter only when a queue 453 * file has lots of recipients. 454 */ 455 if (ENFORCING_SIZE_LIMIT(var_message_limit)) 456 set_file_limit((off_t) var_message_limit); 457 458 /* 459 * Control how unmatched extensions are propagated. 460 */ 461 cleanup_ext_prop_mask = 462 ext_prop_mask(VAR_PROP_EXTENSION, var_prop_extension); 463 464 /* 465 * Setup the filters for characters that should be rejected, and for 466 * characters that should be removed. 467 */ 468 if (*var_msg_reject_chars) { 469 cleanup_reject_chars = vstring_alloc(strlen(var_msg_reject_chars)); 470 unescape(cleanup_reject_chars, var_msg_reject_chars); 471 } 472 if (*var_msg_strip_chars) { 473 cleanup_strip_chars = vstring_alloc(strlen(var_msg_strip_chars)); 474 unescape(cleanup_strip_chars, var_msg_strip_chars); 475 } 476 477 /* 478 * From: header formatting. 479 */ 480 if ((hfrom_format_code = name_code(hfrom_format_table, 481 NAME_CODE_FLAG_NONE, var_hfrom_format)) < 0) 482 msg_fatal("invalid setting: %s = %s", 483 VAR_HFROM_FORMAT, var_hfrom_format); 484 } 485