external/ibm-public/postfix/dist/src/global/tok822_rewrite.c

   1 /*      $NetBSD$        */
   2
   3 /*++
   4 /* NAME
   5 /*      tok822_rewrite 3
   6 /* SUMMARY
   7 /*      address rewriting, client interface
   8 /* SYNOPSIS
   9 /*      #include <tok822.h>
  10 /*
  11 /*      TOK822  *tok822_rewrite(addr, how)
  12 /*      TOK822  *addr;
  13 /*      char    *how;
  14 /* DESCRIPTION
  15 /*      tok822_rewrite() takes an address token tree and transforms
  16 /*      it according to the rule set specified via \fIhow\fR. The
  17 /*      result is the \fIaddr\fR argument.
  18 /* LICENSE
  19 /* .ad
  20 /* .fi
  21 /*      The Secure Mailer license must be distributed with this software.
  22 /* AUTHOR(S)
  23 /*      Wietse Venema
  24 /*      IBM T.J. Watson Research
  25 /*      P.O. Box 704
  26 /*      Yorktown Heights, NY 10598, USA
  27 /*--*/
  28
  29 /* System library. */
  30
  31 #include <sys_defs.h>
  32
  33 /* Utility library. */
  34
  35 #include <vstring.h>
  36 #include <msg.h>
  37
  38 /* Global library. */
  39
  40 #include "rewrite_clnt.h"
  41 #include "tok822.h"
  42
  43 /* tok822_rewrite - address rewriting interface */
  44
  45 TOK822 *tok822_rewrite(TOK822 *addr, const char *how)
  46 {
  47     VSTRING *input_ext_form = vstring_alloc(100);
  48     VSTRING *canon_ext_form = vstring_alloc(100);
  49
  50     if (addr->type != TOK822_ADDR)
  51         msg_panic("tok822_rewrite: non-address token type: %d", addr->type);
  52
  53     /*
  54      * Externalize the token tree, ship it to the rewrite service, and parse
  55      * the result. Shipping external form is much simpler than shipping parse
  56      * trees.
  57      */
  58     tok822_externalize(input_ext_form, addr->head, TOK822_STR_DEFL);
  59     if (msg_verbose)
  60         msg_info("tok822_rewrite: input: %s", vstring_str(input_ext_form));
  61     rewrite_clnt(how, vstring_str(input_ext_form), canon_ext_form);
  62     if (msg_verbose)
  63         msg_info("tok822_rewrite: result: %s", vstring_str(canon_ext_form));
  64     tok822_free_tree(addr->head);
  65     addr->head = tok822_scan(vstring_str(canon_ext_form), &addr->tail);
  66
  67     vstring_free(input_ext_form);
  68     vstring_free(canon_ext_form);
  69     return (addr);
  70 }