src/src/functions.h

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