src/src/functions.h

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2018 */
   6 /* Copyright (c) The Exim Maintainers 2020 */
   7 /* See the file NOTICE for conditions of use and distribution. */
   8
   9
  10 /* Prototypes for functions that appear in various modules. Gathered together
  11 to avoid having a lot of tiddly little headers with only a couple of lines in
  12 them. However, some functions that are used (or not used) by utility programs
  13 are in in fact in separate headers. */
  14 #ifndef _FUNCTIONS_H_
  15 #define _FUNCTIONS_H_
  16
  17 #include <ctype.h>
  18 #include <sys/time.h>
  19
  20
  21 #ifdef EXIM_PERL
  22 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
  23                  uschar **) WARN_UNUSED_RESULT;
  24 extern void    cleanup_perl(void);
  25 extern uschar *init_perl(uschar *);
  26 #endif
  27
  28
  29 #ifndef DISABLE_TLS
  30 extern const char *
  31                std_dh_prime_default(void);
  32 extern const char *
  33                std_dh_prime_named(const uschar *);
  34
  35 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
  36 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
  37 extern uschar * tls_cert_issuer(void *, uschar * mod);
  38 extern uschar * tls_cert_not_before(void *, uschar * mod);
  39 extern uschar * tls_cert_not_after(void *, uschar * mod);
  40 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
  41 extern uschar * tls_cert_serial_number(void *, uschar * mod);
  42 extern uschar * tls_cert_signature(void *, uschar * mod);
  43 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
  44 extern uschar * tls_cert_subject(void *, uschar * mod);
  45 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
  46 extern uschar * tls_cert_version(void *, uschar * mod);
  47
  48 extern uschar * tls_cert_der_b64(void * cert);
  49 extern uschar * tls_cert_fprt_md5(void *);
  50 extern uschar * tls_cert_fprt_sha1(void *);
  51 extern uschar * tls_cert_fprt_sha256(void *);
  52
  53 extern void    tls_clean_env(void);
  54 extern BOOL    tls_client_start(client_conn_ctx *, smtp_connect_args *,
  55                   void *, tls_support *, uschar **);
  56
  57 extern void    tls_close(void *, int);
  58 extern BOOL    tls_could_read(void);
  59 extern void    tls_daemon_init(void);
  60 extern BOOL    tls_dropprivs_validate_require_cipher(BOOL);
  61 extern BOOL    tls_export_cert(uschar *, size_t, void *);
  62 extern int     tls_feof(void);
  63 extern int     tls_ferror(void);
  64 extern void    tls_free_cert(void **);
  65 extern int     tls_getc(unsigned);
  66 extern uschar *tls_getbuf(unsigned *);
  67 extern void    tls_get_cache(void);
  68 extern BOOL    tls_import_cert(const uschar *, void **);
  69 extern int     tls_read(void *, uschar *, size_t);
  70 extern int     tls_server_start(const uschar *, uschar **);
  71 extern BOOL    tls_smtp_buffered(void);
  72 extern int     tls_ungetc(int);
  73 extern int     tls_write(void *, const uschar *, size_t, BOOL);
  74 extern uschar *tls_validate_require_cipher(void);
  75 extern void    tls_version_report(FILE *);
  76 # ifdef USE_OPENSSL
  77 extern BOOL    tls_openssl_options_parse(uschar *, long *);
  78 # endif
  79 extern uschar * tls_field_from_dn(uschar *, const uschar *);
  80 extern BOOL    tls_is_name_for_cert(const uschar *, void *);
  81
  82 # ifdef SUPPORT_DANE
  83 extern int     tlsa_lookup(const host_item *, dns_answer *, BOOL);
  84 # endif
  85
  86 #endif  /*DISABLE_TLS*/
  87
  88
  89 /* Everything else... */
  90
  91 extern acl_block *acl_read(uschar *(*)(void), uschar **);
  92 extern int     acl_check(int, uschar *, uschar *, uschar **, uschar **);
  93 extern int     acl_eval(int, uschar *, uschar **, uschar **);
  94
  95 extern tree_node *acl_var_create(uschar *);
  96 extern void    acl_var_write(uschar *, uschar *, void *);
  97
  98 #ifdef EXPERIMENTAL_ARC
  99 extern void   *arc_ams_setup_sign_bodyhash(void);
 100 extern const uschar *arc_header_feed(gstring *, BOOL);
 101 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
 102 extern void     arc_sign_init(void);
 103 extern const uschar *acl_verify_arc(void);
 104 extern uschar * fn_arc_domains(void);
 105 #endif
 106
 107 extern void    assert_no_variables(void *, int, const char *, int);
 108 extern int     auth_call_pam(const uschar *, uschar **);
 109 extern int     auth_call_pwcheck(uschar *, uschar **);
 110 extern int     auth_call_radius(const uschar *, uschar **);
 111 extern int     auth_call_saslauthd(const uschar *, const uschar *,
 112                  const uschar *, const uschar *, uschar **);
 113 extern int     auth_check_serv_cond(auth_instance *);
 114 extern int     auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
 115 extern int     auth_client_item(void *, auth_instance *, const uschar **,
 116                  unsigned, int, uschar *, int);
 117
 118
 119 extern int     auth_get_data(uschar **, const uschar *, int);
 120 extern int     auth_get_no64_data(uschar **, uschar *);
 121 extern int     auth_prompt(const uschar *);
 122 extern int     auth_read_input(const uschar *);
 123 extern gstring * auth_show_supported(gstring *);
 124 extern uschar *auth_xtextencode(uschar *, int);
 125 extern int     auth_xtextdecode(uschar *, uschar **);
 126
 127 #ifdef EXPERIMENTAL_ARC
 128 extern gstring *authres_arc(gstring *);
 129 #endif
 130 #ifndef DISABLE_DKIM
 131 extern gstring *authres_dkim(gstring *);
 132 #endif
 133 #ifdef SUPPORT_DMARC
 134 extern gstring *authres_dmarc(gstring *);
 135 #endif
 136 extern gstring *authres_smtpauth(gstring *);
 137 #ifdef SUPPORT_SPF
 138 extern gstring *authres_spf(gstring *);
 139 #endif
 140
 141 extern uschar *b64encode(const uschar *, int);
 142 extern uschar *b64encode_taint(const uschar *, int, BOOL);
 143 extern int     b64decode(const uschar *, uschar **);
 144 extern int     bdat_getc(unsigned);
 145 extern uschar *bdat_getbuf(unsigned *);
 146 extern int     bdat_ungetc(int);
 147 extern void    bdat_flush_data(void);
 148
 149 extern void    bits_clear(unsigned int *, size_t, int *);
 150 extern void    bits_set(unsigned int *, size_t, int *);
 151
 152 extern void    cancel_cutthrough_connection(BOOL, const uschar *);
 153 extern gstring *cat_file(FILE *, gstring *, uschar *);
 154 extern gstring *cat_file_tls(void *, gstring *, uschar *);
 155 extern int     check_host(void *, const uschar *, const uschar **, uschar **);
 156 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
 157 extern pid_t   child_open_exim_function(int *, const uschar *);
 158 extern pid_t   child_open_exim2_function(int *, uschar *, uschar *,
 159                  const uschar *);
 160 extern pid_t   child_open_function(uschar **, uschar **, int,
 161                  int *, int *, BOOL, const uschar *);
 162 extern pid_t   child_open_uid(const uschar **, const uschar **, int,
 163                  uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
 164 extern BOOL    cleanup_environment(void);
 165 extern void    cutthrough_data_puts(uschar *, int);
 166 extern void    cutthrough_data_put_nl(void);
 167 extern uschar *cutthrough_finaldot(void);
 168 extern BOOL    cutthrough_flush_send(void);
 169 extern BOOL    cutthrough_headers_send(void);
 170 extern BOOL    cutthrough_predata(void);
 171 extern void    release_cutthrough_connection(const uschar *);
 172
 173 extern void    daemon_go(void);
 174
 175 #ifdef EXPERIMENTAL_DCC
 176 extern int     dcc_process(uschar **);
 177 #endif
 178
 179 extern void    debug_logging_activate(uschar *, uschar *);
 180 extern void    debug_logging_stop(void);
 181 extern void    debug_print_argv(const uschar **);
 182 extern void    debug_print_ids(uschar *);
 183 extern void    debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
 184 extern void    debug_print_string(uschar *);
 185 extern void    debug_print_tree(tree_node *);
 186 extern void    debug_vprintf(int, const char *, va_list);
 187 extern void    debug_print_socket(int);
 188
 189 extern void    decode_bits(unsigned int *, size_t, int *,
 190                    uschar *, bit_table *, int, uschar *, int);
 191 extern void    delete_pid_file(void);
 192 extern address_item *deliver_make_addr(uschar *, BOOL);
 193 extern void    delivery_log(int, address_item *, int, uschar *);
 194 extern int     deliver_message(uschar *, BOOL, BOOL);
 195 extern void    deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
 196 extern void    deliver_set_expansions(address_item *);
 197 extern int     deliver_split_address(address_item *);
 198 extern void    deliver_succeeded(address_item *);
 199
 200 extern uschar *deliver_get_sender_address (uschar *id);
 201 extern void    delivery_re_exec(int);
 202
 203 extern void    die_tainted(const uschar *, const uschar *, int);
 204 extern BOOL    directory_make(const uschar *, const uschar *, int, BOOL);
 205 #ifndef DISABLE_DKIM
 206 extern uschar *dkim_exim_query_dns_txt(const uschar *);
 207 extern void    dkim_exim_sign_init(void);
 208
 209 extern BOOL    dkim_transport_write_message(transport_ctx *,
 210                   struct ob_dkim *, const uschar ** errstr);
 211 #endif
 212 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
 213 extern int     dns_basic_lookup(dns_answer *, const uschar *, int);
 214 extern uschar *dns_build_reverse(const uschar *);
 215 extern time_t  dns_expire_from_soa(dns_answer *, int);
 216 extern void    dns_init(BOOL, BOOL, BOOL);
 217 extern BOOL    dns_is_aa(const dns_answer *);
 218 extern BOOL    dns_is_secure(const dns_answer *);
 219 extern int     dns_lookup(dns_answer *, const uschar *, int, const uschar **);
 220 extern void    dns_pattern_init(void);
 221 extern int     dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
 222 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
 223 extern uschar *dns_text_type(int);
 224 extern void    dscp_list_to_stream(FILE *);
 225 extern BOOL    dscp_lookup(const uschar *, int, int *, int *, int *);
 226
 227 extern void    enq_end(uschar *);
 228 extern BOOL    enq_start(uschar *, unsigned);
 229 #ifndef DISABLE_EVENT
 230 extern uschar *event_raise(uschar *, const uschar *, uschar *);
 231 extern void    msg_event_raise(const uschar *, const address_item *);
 232 #endif
 233
 234 extern int     exim_chown_failure(int, const uschar*, uid_t, gid_t);
 235 extern const uschar * exim_errstr(int);
 236 extern void    exim_exit(int) NORETURN;
 237 extern void    exim_nullstd(void);
 238 extern void    exim_setugid(uid_t, gid_t, BOOL, uschar *);
 239 extern void    exim_underbar_exit(int) NORETURN;
 240 extern void    exim_wait_tick(struct timeval *, int);
 241 extern int     exp_bool(address_item *addr,
 242   uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
 243   uschar *svalue, BOOL *rvalue);
 244 extern BOOL    expand_check_condition(uschar *, uschar *, uschar *);
 245 extern uschar *expand_file_big_buffer(const uschar *);
 246 extern uschar *expand_string(uschar *); /* public, cannot make const */
 247 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
 248 extern uschar *expand_getkeyed(const uschar *, const uschar *);
 249
 250 extern uschar *expand_hide_passwords(uschar * );
 251 extern uschar *expand_string_copy(const uschar *);
 252 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
 253 extern void    modify_variable(uschar *, void *);
 254
 255 extern BOOL    fd_ready(int, time_t);
 256
 257 extern int     filter_interpret(uschar *, int, address_item **, uschar **);
 258 extern BOOL    filter_personal(string_item *, BOOL);
 259 extern BOOL    filter_runtest(int, uschar *, BOOL, BOOL);
 260 extern BOOL    filter_system_interpret(address_item **, uschar **);
 261
 262 extern uschar * fn_hdrs_added(void);
 263
 264 extern void    header_add(int, const char *, ...);
 265 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
 266 extern int     header_checkname(header_line *, BOOL);
 267 extern BOOL    header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
 268 extern int     host_address_extract_port(uschar *);
 269 extern uschar *host_and_ident(BOOL);
 270 extern int     host_aton(const uschar *, int *);
 271 extern void    host_build_hostlist(host_item **, const uschar *, BOOL);
 272 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
 273 extern void    host_build_log_info(void);
 274 extern void    host_build_sender_fullhost(void);
 275 extern int     host_find_byname(host_item *, const uschar *, int,
 276                                 const uschar **, BOOL);
 277 extern int     host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
 278                  uschar *, const dnssec_domains *, const uschar **, BOOL *);
 279 extern ip_address_item *host_find_interfaces(void);
 280 extern BOOL    host_is_in_net(const uschar *, const uschar *, int);
 281 extern BOOL    host_is_tls_on_connect_port(int);
 282 extern int     host_item_get_port(host_item *);
 283 extern void    host_mask(int, int *, int);
 284 extern int     host_name_lookup(void);
 285 extern int     host_nmtoa(int, int *, int, uschar *, int);
 286 extern uschar *host_ntoa(int, const void *, uschar *, int *);
 287 extern int     host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
 288
 289 extern uschar *imap_utf7_encode(uschar *, const uschar *,
 290                                  uschar, uschar *, uschar **);
 291
 292 extern void    invert_address(uschar *, uschar *);
 293 extern int     ip_addr(void *, int, const uschar *, int);
 294 extern int     ip_bind(int, int, uschar *, int);
 295 extern int     ip_connect(int, int, const uschar *, int, int, const blob *);
 296 extern int     ip_connectedsocket(int, const uschar *, int, int,
 297                  int, host_item *, uschar **, const blob *);
 298 extern int     ip_get_address_family(int);
 299 extern void    ip_keepalive(int, const uschar *, BOOL);
 300 extern int     ip_recv(client_conn_ctx *, uschar *, int, time_t);
 301 extern int     ip_socket(int, int);
 302
 303 extern int     ip_tcpsocket(const uschar *, uschar **, int, host_item *);
 304 extern int     ip_unixsocket(const uschar *, uschar **);
 305 extern int     ip_streamsocket(const uschar *, uschar **, int, host_item *);
 306
 307 extern int     ipv6_nmtoa(int *, uschar *);
 308
 309 extern uschar *local_part_quote(uschar *);
 310 extern int     log_create(uschar *);
 311 extern int     log_create_as_exim(uschar *);
 312 extern void    log_close_all(void);
 313
 314 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
 315 extern BOOL    macro_read_assignment(uschar *);
 316 extern uschar *macros_expand(int, int *, BOOL *);
 317 extern void    mainlog_close(void);
 318 #ifdef WITH_CONTENT_SCAN
 319 extern int     malware(const uschar *, int);
 320 extern int     malware_in_file(uschar *);
 321 extern void    malware_init(void);
 322 extern gstring * malware_show_supported(gstring *);
 323 #endif
 324 extern int     match_address_list(const uschar *, BOOL, BOOL, const uschar **,
 325                  unsigned int *, int, int, const uschar **);
 326 extern int     match_address_list_basic(const uschar *, const uschar **, int);
 327 extern int     match_check_list(const uschar **, int, tree_node **, unsigned int **,
 328                  int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
 329                  const uschar *, const uschar **);
 330 extern int     match_isinlist(const uschar *, const uschar **, int, tree_node **,
 331                  unsigned int *, int, BOOL, const uschar **);
 332 extern int     match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
 333                  const uschar **);
 334 extern void    md5_end(md5 *, const uschar *, int, uschar *);
 335 extern void    md5_mid(md5 *, const uschar *);
 336 extern void    md5_start(md5 *);
 337 extern void    millisleep(int);
 338 #ifdef WITH_CONTENT_SCAN
 339 struct mime_boundary_context;
 340 extern int     mime_acl_check(uschar *acl, FILE *f,
 341                  struct mime_boundary_context *, uschar **, uschar **);
 342 extern int     mime_decode(const uschar **);
 343 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
 344 extern int     mime_regex(const uschar **);
 345 extern void    mime_set_anomaly(int);
 346 #endif
 347 extern uschar *moan_check_errorcopy(uschar *);
 348 extern BOOL    moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
 349                  BOOL, uschar *);
 350 extern void    moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
 351 extern BOOL    moan_send_message(uschar *, int, error_block *eblock,
 352                  header_line *, FILE *, uschar *);
 353 extern void    moan_tell_someone(uschar *, address_item *,
 354                  const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
 355 extern BOOL    moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
 356 extern void    moan_write_from(FILE *);
 357 extern void    moan_write_references(FILE *, uschar *);
 358 extern FILE   *modefopen(const uschar *, const char *, mode_t);
 359
 360 extern int     open_cutthrough_connection( address_item * addr );
 361
 362 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
 363                  BOOL);
 364 extern int     parse_forward_list(uschar *, int, address_item **, uschar **,
 365                  const uschar *, uschar *, error_block **);
 366 extern uschar *parse_find_address_end(uschar *, BOOL);
 367 extern uschar *parse_find_at(uschar *);
 368 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
 369 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
 370 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
 371 extern uschar *parse_date_time(uschar *str, time_t *t);
 372 extern int     vaguely_random_number(int);
 373 #ifndef DISABLE_TLS
 374 extern int     vaguely_random_number_fallback(int);
 375 #endif
 376
 377 extern BOOL    queue_action(uschar *, int, uschar **, int, int);
 378 extern void    queue_check_only(void);
 379 extern unsigned queue_count(void);
 380 extern unsigned queue_count_cached(void);
 381 extern void    queue_list(int, uschar **, int);
 382 #ifdef EXPERIMENTAL_QUEUE_RAMP
 383 extern void    queue_notify_daemon(const uschar * hostname);
 384 #endif
 385 extern void    queue_run(uschar *, uschar *, BOOL);
 386
 387 extern int     random_number(int);
 388 extern const uschar *rc_to_string(int);
 389 extern int     rda_interpret(redirect_block *, int, uschar *, uschar *,
 390                  uschar *, uschar *, uschar *, ugid_block *, address_item **,
 391                  uschar **, error_block **, int *, uschar *);
 392 extern int     rda_is_filter(const uschar *);
 393 extern BOOL    readconf_depends(driver_instance *, uschar *);
 394 extern void    readconf_driver_init(uschar *, driver_instance **,
 395                  driver_info *, int, void *, int, optionlist *, int);
 396 extern uschar *readconf_find_option(void *);
 397 extern void    readconf_main(BOOL);
 398 extern void    readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
 399 extern BOOL    readconf_print(uschar *, uschar *, BOOL);
 400 extern uschar *readconf_printtime(int);
 401 extern uschar *readconf_readname(uschar *, int, uschar *);
 402 extern int     readconf_readtime(const uschar *, int, BOOL);
 403 extern void    readconf_rest(void);
 404 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
 405 extern void    readconf_save_config(const uschar *);
 406 extern void    read_message_body(BOOL);
 407 extern void    receive_bomb_out(uschar *, uschar *) NORETURN;
 408 extern BOOL    receive_check_fs(int);
 409 extern BOOL    receive_check_set_sender(uschar *);
 410 extern BOOL    receive_msg(BOOL);
 411 extern int_eximarith_t receive_statvfs(BOOL, int *);
 412 extern void    receive_swallow_smtp(void);
 413 #ifdef WITH_CONTENT_SCAN
 414 extern int     regex(const uschar **);
 415 #endif
 416 extern BOOL    regex_match_and_setup(const pcre *, const uschar *, int, int);
 417 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
 418 extern void    retry_add_item(address_item *, uschar *, int);
 419 extern BOOL    retry_check_address(const uschar *, host_item *, uschar *, BOOL,
 420                  uschar **, uschar **);
 421 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
 422 extern BOOL    retry_ultimate_address_timeout(uschar *, const uschar *,
 423                  dbdata_retry *, time_t);
 424 extern void    retry_update(address_item **, address_item **, address_item **);
 425 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
 426 extern uschar *rewrite_address_qualify(uschar *, BOOL);
 427 extern header_line *rewrite_header(header_line *,
 428                const uschar *, const uschar *,
 429                rewrite_rule *, int, BOOL);
 430 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
 431                  rewrite_rule *);
 432 extern void    rewrite_test(uschar *);
 433 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
 434                  uschar **);
 435 extern int     route_address(address_item *, address_item **, address_item **,
 436                  address_item **, address_item **, int);
 437 extern int     route_check_prefix(const uschar *, const uschar *, unsigned *);
 438 extern int     route_check_suffix(const uschar *, const uschar *, unsigned *);
 439 extern BOOL    route_findgroup(uschar *, gid_t *);
 440 extern BOOL    route_finduser(const uschar *, struct passwd **, uid_t *);
 441 extern BOOL    route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
 442                  uschar **);
 443 extern BOOL    route_find_expanded_user(uschar *, uschar *, uschar *,
 444                  struct passwd **, uid_t *, uschar **);
 445 extern void    route_init(void);
 446 extern gstring * route_show_supported(gstring *);
 447 extern void    route_tidyup(void);
 448
 449 extern uschar *search_find(void *, const uschar *, uschar *, int,
 450                  const uschar *, int, int, int *, const uschar *);
 451 extern int     search_findtype(const uschar *, int);
 452 extern int     search_findtype_partial(const uschar *, int *, const uschar **, int *,
 453                  int *, const uschar **);
 454 extern void   *search_open(const uschar *, int, int, uid_t *, gid_t *);
 455 extern void    search_tidyup(void);
 456 extern void    set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
 457 extern void    sha1_end(hctx *, const uschar *, int, uschar *);
 458 extern void    sha1_mid(hctx *, const uschar *);
 459 extern void    sha1_start(hctx *);
 460 extern int     sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
 461                  uschar *, address_item **, uschar **);
 462 extern void    sigalrm_handler(int);
 463 extern BOOL    smtp_buffered(void);
 464 extern void    smtp_closedown(uschar *);
 465 extern void    smtp_command_timeout_exit(void) NORETURN;
 466 extern void    smtp_command_sigterm_exit(void) NORETURN;
 467 extern void    smtp_data_timeout_exit(void) NORETURN;
 468 extern void    smtp_data_sigint_exit(void) NORETURN;
 469 extern void    smtp_deliver_init(void);
 470 extern uschar *smtp_cmd_hist(void);
 471 extern int     smtp_connect(smtp_connect_args *, const blob *);
 472 extern int     smtp_sock_connect(host_item *, int, int, uschar *,
 473                  transport_instance * tb, int, const blob *);
 474 extern int     smtp_feof(void);
 475 extern int     smtp_ferror(void);
 476 extern uschar *smtp_get_connection_info(void);
 477 extern BOOL    smtp_get_interface(uschar *, int, address_item *,
 478                  uschar **, uschar *);
 479 extern BOOL    smtp_get_port(uschar *, address_item *, int *, uschar *);
 480 extern int     smtp_getc(unsigned);
 481 extern uschar *smtp_getbuf(unsigned *);
 482 extern void    smtp_get_cache(void);
 483 extern int     smtp_handle_acl_fail(int, int, uschar *, uschar *);
 484 extern void    smtp_log_no_mail(void);
 485 extern void    smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
 486 extern void    smtp_proxy_tls(void *, uschar *, size_t, int *, int) NORETURN;
 487 extern BOOL    smtp_read_response(void *, uschar *, int, int, int);
 488 extern void   *smtp_reset(void *);
 489 extern void    smtp_respond(uschar *, int, BOOL, uschar *);
 490 extern void    smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
 491 extern void    smtp_port_for_connect(host_item *, int);
 492 extern void    smtp_send_prohibition_message(int, uschar *);
 493 extern int     smtp_setup_msg(void);
 494 extern BOOL    smtp_start_session(void);
 495 extern int     smtp_ungetc(int);
 496 extern BOOL    smtp_verify_helo(void);
 497 extern int     smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
 498 #ifdef WITH_CONTENT_SCAN
 499 extern int     spam(const uschar **);
 500 extern FILE   *spool_mbox(unsigned long *, const uschar *, uschar **);
 501 #endif
 502 extern void    spool_clear_header_globals(void);
 503 extern BOOL    spool_move_message(uschar *, uschar *, uschar *, uschar *);
 504 extern int     spool_open_datafile(uschar *);
 505 extern int     spool_open_temp(uschar *);
 506 extern int     spool_read_header(uschar *, BOOL, BOOL);
 507 extern int     spool_write_header(uschar *, int, uschar **);
 508 extern int     stdin_getc(unsigned);
 509 extern int     stdin_feof(void);
 510 extern int     stdin_ferror(void);
 511 extern int     stdin_ungetc(int);
 512
 513 extern void    store_exit(void);
 514 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
 515 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
 516 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
 517 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
 518 extern uschar *string_base62(unsigned long int);
 519 extern gstring *string_cat (gstring *, const uschar *     ) WARN_UNUSED_RESULT;
 520 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
 521 extern int     string_compare_by_pointer(const void *, const void *);
 522 extern uschar *string_copy_dnsdomain(uschar *);
 523 extern uschar *string_copy_malloc(const uschar *);
 524 extern uschar *string_dequote(const uschar **);
 525 extern uschar *string_format_size(int, uschar *);
 526 extern int     string_interpret_escape(const uschar **);
 527 extern int     string_is_ip_address(const uschar *, int *);
 528 #ifdef SUPPORT_I18N
 529 extern BOOL    string_is_utf8(const uschar *);
 530 #endif
 531 extern const uschar *string_printing2(const uschar *, BOOL);
 532 extern uschar *string_split_message(uschar *);
 533 extern uschar *string_unprinting(uschar *);
 534 #ifdef SUPPORT_I18N
 535 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
 536 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
 537 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
 538 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
 539 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
 540 #endif
 541
 542 #define string_format(buf, siz, fmt, ...) \
 543         string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
 544 extern BOOL    string_format_trc(uschar *, int, const uschar *, unsigned,
 545                         const char *, ...) ALMOST_PRINTF(5,6);
 546
 547 #define string_vformat(g, flgs, fmt, ap) \
 548         string_vformat_trc(g, US __FUNCTION__, __LINE__, \
 549                          STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
 550 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
 551                         unsigned, unsigned, const char *, va_list);
 552
 553 #define string_open_failed(eno, fmt, ...) \
 554         string_open_failed_trc(eno, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
 555 extern uschar *string_open_failed_trc(int, const uschar *, unsigned,
 556                         const char *, ...) PRINTF_FUNCTION(4,5);
 557
 558 #define string_nextinlist(lp, sp, b, l) \
 559         string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
 560 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
 561                         const uschar * func, int line);
 562
 563 extern int     strcmpic(const uschar *, const uschar *);
 564 extern int     strncmpic(const uschar *, const uschar *, int);
 565 extern uschar *strstric(uschar *, uschar *, BOOL);
 566
 567 extern int     test_harness_fudged_queue_time(int);
 568 extern void    tcp_init(void);
 569 #ifdef EXIM_TFO_PROBE
 570 extern void    tfo_probe(void);
 571 #endif
 572 extern void    tls_modify_variables(tls_support *);
 573 extern uschar *tod_stamp(int);
 574
 575 extern BOOL    transport_check_waiting(const uschar *, const uschar *, int, uschar *,
 576                  BOOL *, oicf, void*);
 577 extern void    transport_init(void);
 578 extern void    transport_do_pass_socket(const uschar *, const uschar *,
 579                  const uschar *, uschar *, int);
 580 extern BOOL    transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
 581                  int);
 582 extern uschar *transport_rcpt_address(address_item *, BOOL);
 583 extern BOOL    transport_set_up_command(const uschar ***, uschar *,
 584                  BOOL, int, address_item *, uschar *, uschar **);
 585 extern void    transport_update_waiting(host_item *, uschar *);
 586 extern BOOL    transport_write_block(transport_ctx *, uschar *, int, BOOL);
 587 extern void    transport_write_reset(int);
 588 extern BOOL    transport_write_string(int, const char *, ...);
 589 extern BOOL    transport_headers_send(transport_ctx *,
 590                  BOOL (*)(transport_ctx *, uschar *, int));
 591 extern gstring * transport_show_supported(gstring *);
 592 extern BOOL    transport_write_message(transport_ctx *, int);
 593 extern void    tree_add_duplicate(uschar *, address_item *);
 594 extern void    tree_add_nonrecipient(uschar *);
 595 extern void    tree_add_unusable(host_item *);
 596 extern void    tree_dup(tree_node **, tree_node *);
 597 extern int     tree_insertnode(tree_node **, tree_node *);
 598 extern tree_node *tree_search(tree_node *, const uschar *);
 599 extern void    tree_write(tree_node *, FILE *);
 600 extern void    tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
 601
 602 #ifdef WITH_CONTENT_SCAN
 603 extern void    unspool_mbox(void);
 604 #endif
 605 #ifdef SUPPORT_I18N
 606 extern void    utf8_version_report(FILE *);
 607 #endif
 608
 609 extern int     verify_address(address_item *, FILE *, int, int, int, int,
 610                  uschar *, uschar *, BOOL *);
 611 extern int     verify_check_dnsbl(int, const uschar **, uschar **);
 612 extern int     verify_check_header_address(uschar **, uschar **, int, int, int,
 613                  uschar *, uschar *, int, int *);
 614 extern int     verify_check_headers(uschar **);
 615 extern int     verify_check_header_names_ascii(uschar **);
 616 extern int     verify_check_host(uschar **);
 617 extern int     verify_check_notblind(BOOL);
 618 extern int     verify_check_given_host(const uschar **, const host_item *);
 619 extern int     verify_check_this_host(const uschar **, unsigned int *,
 620                  const uschar*, const uschar *, const uschar **);
 621 extern address_item *verify_checked_sender(uschar *);
 622 extern void    verify_get_ident(int);
 623 extern BOOL    verify_sender(int *, uschar **);
 624 extern BOOL    verify_sender_preliminary(int *, uschar **);
 625 extern void    version_init(void);
 626
 627 extern BOOL    write_chunk(transport_ctx *, uschar *, int);
 628 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
 629
 630
 631 /******************************************************************************/
 632 /* Predicate: if an address is in a tainted pool.
 633 By extension, a variable pointing to this address is tainted.
 634 */
 635
 636 static inline BOOL
 637 is_tainted(const void * p)
 638 {
 639 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
 640 return FALSE;
 641
 642 #else
 643 extern BOOL is_tainted_fn(const void *);
 644 return is_tainted_fn(p);
 645 #endif
 646 }
 647
 648 /******************************************************************************/
 649 /* String functions */
 650 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
 651 {
 652 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
 653 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
 654 #endif
 655 return US strcat(CS dst, CCS src);
 656 }
 657 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
 658 {
 659 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
 660 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
 661 #endif
 662 return US strcpy(CS dst, CCS src);
 663 }
 664 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
 665 {
 666 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
 667 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
 668 #endif
 669 return US strncat(CS dst, CCS src, n);
 670 }
 671 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
 672 {
 673 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
 674 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
 675 #endif
 676 return US strncpy(CS dst, CCS src, n);
 677 }
 678 /*XXX will likely need unchecked copy also */
 679
 680
 681 /* Advance the string pointer given over any whitespace.
 682 Return the next char as there's enought places using it to be useful. */
 683
 684 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
 685
 686 static inline uschar skip_whitespace(const uschar ** sp)
 687 { while (isspace(**sp)) (*sp)++; return **sp; }
 688
 689
 690 /******************************************************************************/
 691
 692 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
 693 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
 694 chown(<exim-uid>, <exim-gid>).
 695
 696 Probably because the idmapping is broken, misconfigured or set up in
 697 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
 698 case of misconfiguration, or if there are more such broken systems
 699 out, I try to impose as least impact as possible and for now just write
 700 a panic log entry pointing to the bug report. You're encouraged to
 701 contact the developers, if you experience this issue.
 702
 703 fd     the file descriptor (or -1 if not valid)
 704 name   the file name for error messages or for file operations,
 705   if fd is < 0
 706 owner  the owner
 707 group  the group
 708
 709 returns 0 on success, -1 on failure */
 710
 711 static inline int
 712 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
 713 {
 714 return fchown(fd, owner, group)
 715   ? exim_chown_failure(fd, name, owner, group) : 0;
 716 }
 717
 718 static inline int
 719 exim_chown(const uschar *name, uid_t owner, gid_t group)
 720 {
 721 return chown(CCS name, owner, group)
 722   ? exim_chown_failure(-1, name, owner, group) : 0;
 723 }
 724 #endif  /* !MACRO_PREDEF && !COMPILE_UTILITY */
 725
 726 /******************************************************************************/
 727 /* String functions */
 728
 729 #if !defined(MACRO_PREDEF)
 730 /*************************************************
 731 *            Copy and save string                *
 732 *************************************************/
 733
 734 /* This function assumes that memcpy() is faster than strcpy().
 735 The result is explicitly nul-terminated.
 736 */
 737
 738 static inline uschar *
 739 string_copyn_taint_trc(const uschar * s, unsigned len,
 740         BOOL tainted, const char * func, int line)
 741 {
 742 uschar * ss = store_get_3(len + 1, tainted, func, line);
 743 memcpy(ss, s, len);
 744 ss[len] = '\0';
 745 return ss;
 746 }
 747
 748 static inline uschar *
 749 string_copy_taint_trc(const uschar * s, BOOL tainted, const char * func, int line)
 750 { return string_copyn_taint_trc(s, Ustrlen(s), tainted, func, line); }
 751
 752 static inline uschar *
 753 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
 754 { return string_copyn_taint_trc(s, len, is_tainted(s), func, line); }
 755 static inline uschar *
 756 string_copy_trc(const uschar * s, const char * func, int line)
 757 { return string_copy_taint_trc(s, is_tainted(s), func, line); }
 758
 759
 760 /* String-copy functions explicitly setting the taint status */
 761
 762 #define string_copyn_taint(s, len, tainted) \
 763         string_copyn_taint_trc((s), (len), (tainted), __FUNCTION__, __LINE__)
 764 #define string_copy_taint(s, tainted) \
 765         string_copy_taint_trc((s), (tainted), __FUNCTION__, __LINE__)
 766
 767 /* Simple string-copy functions maintaining the taint */
 768
 769 #define string_copyn(s, len) \
 770         string_copyn_taint_trc((s), (len), is_tainted(s), __FUNCTION__, __LINE__)
 771 #define string_copy(s) \
 772         string_copy_taint_trc((s), is_tainted(s), __FUNCTION__, __LINE__)
 773
 774
 775 /*************************************************
 776 *       Copy, lowercase and save string          *
 777 *************************************************/
 778
 779 /*
 780 Argument: string to copy
 781 Returns:  copy of string in new store, with letters lowercased
 782 */
 783
 784 static inline uschar *
 785 string_copylc(const uschar *s)
 786 {
 787 uschar *ss = store_get(Ustrlen(s) + 1, is_tainted(s));
 788 uschar *p = ss;
 789 while (*s != 0) *p++ = tolower(*s++);
 790 *p = 0;
 791 return ss;
 792 }
 793
 794
 795
 796 /*************************************************
 797 * Copy, lowercase, and save string, given length *
 798 *************************************************/
 799
 800 /* It is assumed the data contains no zeros. A zero is added
 801 onto the end.
 802
 803 Arguments:
 804   s         string to copy
 805   n         number of characters
 806
 807 Returns:    copy of string in new store, with letters lowercased
 808 */
 809
 810 static inline uschar *
 811 string_copynlc(uschar *s, int n)
 812 {
 813 uschar *ss = store_get(n + 1, is_tainted(s));
 814 uschar *p = ss;
 815 while (n-- > 0) *p++ = tolower(*s++);
 816 *p = 0;
 817 return ss;
 818 }
 819
 820
 821 # ifndef COMPILE_UTILITY
 822 /*************************************************
 823 *     Copy and save string in longterm store     *
 824 *************************************************/
 825
 826 /* This function assumes that memcpy() is faster than strcpy().
 827
 828 Argument: string to copy
 829 Returns:  copy of string in new store
 830 */
 831
 832 static inline uschar *
 833 string_copy_perm(const uschar *s, BOOL force_taint)
 834 {
 835 int old_pool = store_pool;
 836 int len = Ustrlen(s) + 1;
 837 uschar *ss;
 838
 839 store_pool = POOL_PERM;
 840 ss = store_get(len, force_taint || is_tainted(s));
 841 memcpy(ss, s, len);
 842 store_pool = old_pool;
 843 return ss;
 844 }
 845 # endif
 846
 847
 848
 849 /* sprintf into a buffer, taint-unchecked */
 850
 851 static inline void
 852 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
 853 {
 854 gstring gs = { .size = siz, .ptr = 0, .s = buf };
 855 va_list ap;
 856 va_start(ap, fmt);
 857 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
 858 va_end(ap);
 859 }
 860
 861
 862
 863 /******************************************************************************/
 864 /* Growable-string functions */
 865
 866 /* Create a growable-string with some preassigned space */
 867
 868 #define string_get_tainted(size, tainted) \
 869         string_get_tainted_trc((size), (tainted), __FUNCTION__, __LINE__)
 870
 871 static inline gstring *
 872 string_get_tainted_trc(unsigned size, BOOL tainted, const char * func, unsigned line)
 873 {
 874 gstring * g = store_get_3(sizeof(gstring) + size, tainted, func, line);
 875 g->size = size;
 876 g->ptr = 0;
 877 g->s = US(g + 1);
 878 return g;
 879 }
 880
 881 #define string_get(size) \
 882         string_get_trc((size), __FUNCTION__, __LINE__)
 883
 884 static inline gstring *
 885 string_get_trc(unsigned size, const char * func, unsigned line)
 886 {
 887 return string_get_tainted_trc(size, FALSE, func, line);
 888 }
 889
 890 /* NUL-terminate the C string in the growable-string, and return it. */
 891
 892 static inline uschar *
 893 string_from_gstring(gstring * g)
 894 {
 895 if (!g) return NULL;
 896 g->s[g->ptr] = '\0';
 897 return g->s;
 898 }
 899
 900 static inline unsigned
 901 gstring_length(const gstring * g)
 902 {
 903 return g ? (unsigned)g->ptr : 0;
 904 }
 905
 906
 907 #define gstring_release_unused(g) \
 908         gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
 909
 910 static inline void
 911 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
 912 {
 913 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
 914 }
 915
 916
 917 /* sprintf-append to a growable-string */
 918
 919 #define string_fmt_append(g, fmt, ...) \
 920         string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
 921         SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
 922
 923 #define string_fmt_append_f(g, flgs, fmt, ...) \
 924         string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
 925         flgs,         fmt, __VA_ARGS__)
 926
 927 static inline gstring *
 928 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
 929   unsigned flags, const char *format, ...)
 930 {
 931 va_list ap;
 932 va_start(ap, format);
 933 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
 934                         flags, format, ap);
 935 va_end(ap);
 936 return g;
 937 }
 938
 939
 940 /* Copy the content of a string to tainted memory */
 941
 942 static inline void
 943 gstring_rebuffer(gstring * g)
 944 {
 945 uschar * s = store_get(g->size, TRUE);
 946 memcpy(s, g->s, g->ptr);
 947 g->s = s;
 948 }
 949
 950
 951 /******************************************************************************/
 952
 953 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
 954
 955 static inline dns_answer *
 956 store_get_dns_answer_trc(const uschar * func, unsigned line)
 957 {
 958 return store_get_3(sizeof(dns_answer), TRUE, CCS func, line);  /* use tainted mem */
 959 }
 960
 961 /******************************************************************************/
 962 /* Routines with knowledge of spool layout */
 963
 964 # ifndef COMPILE_UTILITY
 965 static inline void
 966 spool_pname_buf(uschar * buf, int len)
 967 {
 968 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
 969 }
 970
 971 static inline uschar *
 972 spool_dname(const uschar * purpose, uschar * subdir)
 973 {
 974 return string_sprintf("%s/%s/%s/%s",
 975         spool_directory, queue_name, purpose, subdir);
 976 }
 977 # endif
 978
 979 static inline uschar *
 980 spool_q_sname(const uschar * purpose, const uschar * q, uschar * subdir)
 981 {
 982 return string_sprintf("%s%s%s%s%s",
 983                     q, *q ? "/" : "",
 984                     purpose,
 985                     *subdir ? "/" : "", subdir);
 986 }
 987
 988 static inline uschar *
 989 spool_sname(const uschar * purpose, uschar * subdir)
 990 {
 991 return spool_q_sname(purpose, queue_name, subdir);
 992 }
 993
 994 static inline uschar *
 995 spool_q_fname(const uschar * purpose, const uschar * q,
 996         const uschar * subdir, const uschar * fname, const uschar * suffix)
 997 {
 998 return string_sprintf("%s/%s/%s/%s/%s%s",
 999         spool_directory, q, purpose, subdir, fname, suffix);
1000 }
1001
1002 static inline uschar *
1003 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1004         const uschar * suffix)
1005 {
1006 #ifdef COMPILE_UTILITY          /* version avoiding string-extension */
1007 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1008         + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1009 uschar * buf = store_get(len, FALSE);
1010 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1011         spool_directory, queue_name, purpose, subdir, fname, suffix);
1012 return buf;
1013 #else
1014 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1015 #endif
1016 }
1017
1018 static inline void
1019 set_subdir_str(uschar * subdir_str, const uschar * name,
1020         int search_sequence)
1021 {
1022 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1023        ? name[5] : '\0';
1024 subdir_str[1] = '\0';
1025 }
1026
1027 /******************************************************************************/
1028 /* Time calculations */
1029
1030 static inline void
1031 timesince(struct timeval * diff, const struct timeval * then)
1032 {
1033 gettimeofday(diff, NULL);
1034 diff->tv_sec -= then->tv_sec;
1035 if ((diff->tv_usec -= then->tv_usec) < 0)
1036   {
1037   diff->tv_sec--;
1038   diff->tv_usec += 1000*1000;
1039   }
1040 }
1041
1042 static inline uschar *
1043 string_timediff(const struct timeval * diff)
1044 {
1045 static uschar buf[sizeof("0.000s")];
1046
1047 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1048   return readconf_printtime((int)diff->tv_sec);
1049
1050 snprintf(CS buf, sizeof(buf), "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1051 return buf;
1052 }
1053
1054
1055 static inline uschar *
1056 string_timesince(const struct timeval * then)
1057 {
1058 struct timeval diff;
1059 timesince(&diff, then);
1060 return string_timediff(&diff);
1061 }
1062
1063 static inline void
1064 report_time_since(const struct timeval * t0, const uschar * where)
1065 {
1066 # ifdef MEASURE_TIMING
1067 struct timeval diff;
1068 timesince(&diff, t0);
1069 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1070        (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1071 # endif
1072 }
1073
1074
1075 static inline void
1076 testharness_pause_ms(int millisec)
1077 {
1078 #ifndef MEASURE_TIMING
1079 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1080 #endif
1081 }
1082
1083 /******************************************************************************/
1084 /* Taint-checked file opens */
1085
1086 static inline int
1087 exim_open2(const char *pathname, int flags)
1088 {
1089 if (!is_tainted(pathname)) return open(pathname, flags);
1090 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1091 errno = EACCES;
1092 return -1;
1093 }
1094 static inline int
1095 exim_open(const char *pathname, int flags, mode_t mode)
1096 {
1097 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1098 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1099 errno = EACCES;
1100 return -1;
1101 }
1102 static inline int
1103 exim_openat(int dirfd, const char *pathname, int flags)
1104 {
1105 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1106 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1107 errno = EACCES;
1108 return -1;
1109 }
1110 static inline int
1111 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1112 {
1113 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1114 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1115 errno = EACCES;
1116 return -1;
1117 }
1118
1119 static inline FILE *
1120 exim_fopen(const char *pathname, const char *mode)
1121 {
1122 if (!is_tainted(pathname)) return fopen(pathname, mode);
1123 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1124 errno = EACCES;
1125 return NULL;
1126 }
1127
1128 static inline DIR *
1129 exim_opendir(const uschar * name)
1130 {
1131 if (!is_tainted(name)) return opendir(CCS name);
1132 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1133 errno = EACCES;
1134 return NULL;
1135 }
1136
1137 /******************************************************************************/
1138 # if !defined(COMPILE_UTILITY)
1139 /* Process manipulation */
1140
1141 static inline pid_t
1142 exim_fork(const unsigned char * purpose)
1143 {
1144 pid_t pid;
1145 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1146 if ((pid = fork()) == 0)
1147   {
1148   process_purpose = purpose;
1149   DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1150   }
1151 else
1152   {
1153   testharness_pause_ms(100); /* let child work */
1154   DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1155   }
1156 return pid;
1157 }
1158
1159
1160 static inline pid_t
1161 child_open_exim(int * fdptr, const uschar * purpose)
1162 { return child_open_exim_function(fdptr, purpose); }
1163
1164 static inline pid_t
1165 child_open_exim2(int * fdptr, uschar * sender,
1166   uschar * sender_auth, const uschar * purpose)
1167 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1168
1169 static inline pid_t
1170 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1171   int *outfdptr, BOOL make_leader, const uschar * purpose)
1172 { return child_open_function(argv, envp, newumask, infdptr,
1173   outfdptr, make_leader, purpose);
1174 }
1175
1176 # endif /* !COMPILE_UTILITY */
1177
1178 /******************************************************************************/
1179 #endif  /* !MACRO_PREDEF */
1180
1181 #endif  /* _FUNCTIONS_H_ */
1182
1183 /* vi: aw
1184 */
1185 /* End of functions.h */