external/ibm-public/postfix/dist/src/global/match_parent_style.c

   1 /*      $NetBSD$        */
   2
   3 /*++
   4 /* NAME
   5 /*      match_parent_style 3
   6 /* SUMMARY
   7 /*      parent domain matching control
   8 /* SYNOPSIS
   9 /*      #include <match_parent_style.h>
  10 /*
  11 /*      int     match_parent_style(name)
  12 /*      const char *name;
  13 /* DESCRIPTION
  14 /*      This module queries configuration parameters for the policy that
  15 /*      controls how wild-card parent domain names are used by various
  16 /*      postfix lookup mechanisms.
  17 /*
  18 /*      match_parent_style() looks up "name" in the
  19 /*      parent_domain_matches_subdomain configuration parameter
  20 /*      and returns either MATCH_FLAG_PARENT (parent domain matches
  21 /*      subdomains) or MATCH_FLAG_NONE.
  22 /* DIAGNOSTICS
  23 /*      Fatal error: out of memory, name listed under both parent wild card
  24 /*      matching policies.
  25 /* SEE ALSO
  26 /*      string_list(3) plain string matching
  27 /*      domain_list(3) match host name patterns
  28 /*      namadr_list(3) match host name/address patterns
  29 /* LICENSE
  30 /* .ad
  31 /* .fi
  32 /*      The Secure Mailer license must be distributed with this software.
  33 /* AUTHOR(S)
  34 /*      Wietse Venema
  35 /*      IBM T.J. Watson Research
  36 /*      P.O. Box 704
  37 /*      Yorktown Heights, NY 10598, USA
  38 /*--*/
  39
  40 /* System library. */
  41
  42 #include <sys_defs.h>
  43
  44 /* Utility library. */
  45
  46 /* Global library. */
  47
  48 #include <string_list.h>
  49 #include <mail_params.h>
  50 #include <match_parent_style.h>
  51
  52 /* Application-specific. */
  53
  54 static STRING_LIST *match_par_dom_list;
  55
  56 int     match_parent_style(const char *name)
  57 {
  58     int     result;
  59
  60     /*
  61      * Initialize on the fly.
  62      */
  63     if (match_par_dom_list == 0)
  64         match_par_dom_list =
  65             string_list_init(MATCH_FLAG_NONE, var_par_dom_match);
  66
  67     /*
  68      * Look up the parent domain matching policy.
  69      */
  70     if (string_list_match(match_par_dom_list, name))
  71         result = MATCH_FLAG_PARENT;
  72     else
  73         result = 0;
  74     return (result);
  75 }