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

   1 /*      $NetBSD$        */
   2
   3 /*++
   4 /* NAME
   5 /*      input_transp 3
   6 /* SUMMARY
   7 /*      receive transparency control
   8 /* SYNOPSIS
   9 /*      #include <input_transp.h>
  10 /*
  11 /*      int     input_transp_mask(param_name, pattern)
  12 /*      const char *param_name;
  13 /*      const char *pattern;
  14 /*
  15 /*      int     input_transp_cleanup(cleanup_flags, transp_mask)
  16 /*      int     cleanup_flags;
  17 /*      int     transp_mask;
  18 /* DESCRIPTION
  19 /*      This module controls how much processing happens before mail is
  20 /*      written to the Postfix queue. Each transparency option is either
  21 /*      implemented by a client of the cleanup service, or is passed
  22 /*      along in a client request to the cleanup service. This eliminates
  23 /*      the need to configure multiple cleanup service instances.
  24 /*
  25 /*      input_transp_mask() takes a comma-separated list of names and
  26 /*      computes the corresponding mask. The following names are
  27 /*      recognized in \fBpattern\fR, with the corresponding bit mask
  28 /*      given in parentheses:
  29 /* .IP "no_unknown_recipient_checks (INPUT_TRANSP_UNKNOWN_RCPT)"
  30 /*      Do not try to reject unknown recipients.
  31 /* .IP "no_address_mappings (INPUT_TRANSP_ADDRESS_MAPPING)"
  32 /*      Disable canonical address mapping, virtual alias map expansion,
  33 /*      address masquerading, and automatic BCC recipients.
  34 /* .IP "no_header_body_checks (INPUT_TRANSP_HEADER_BODY)"
  35 /*      Disable header/body_checks.
  36 /* .IP "no_milters (INPUT_TRANSP_MILTER)"
  37 /*      Disable Milter applications.
  38 /*
  39 /*      input_transp_cleanup() takes a bunch of cleanup processing
  40 /*      flags and updates them according to the settings in the
  41 /*      specified input transparency mask.
  42 /* DIAGNOSTICS
  43 /*      Panic: inappropriate use.
  44 /* LICENSE
  45 /* .ad
  46 /* .fi
  47 /*      The Secure Mailer license must be distributed with this software.
  48 /* AUTHOR(S)
  49 /*      Wietse Venema
  50 /*      IBM T.J. Watson Research
  51 /*      P.O. Box 704
  52 /*      Yorktown Heights, NY 10598, USA
  53 /*--*/
  54
  55 /* System library. */
  56
  57 #include <sys_defs.h>
  58
  59 /* Utility library. */
  60
  61 #include <name_mask.h>
  62 #include <msg.h>
  63
  64 /* Global library. */
  65
  66 #include <mail_params.h>
  67 #include <cleanup_user.h>
  68 #include <input_transp.h>
  69
  70 /* input_transp_mask - compute mail receive transparency mask */
  71
  72 int     input_transp_mask(const char *param_name, const char *pattern)
  73 {
  74     static const NAME_MASK table[] = {
  75         "no_unknown_recipient_checks", INPUT_TRANSP_UNKNOWN_RCPT,
  76         "no_address_mappings", INPUT_TRANSP_ADDRESS_MAPPING,
  77         "no_header_body_checks", INPUT_TRANSP_HEADER_BODY,
  78         "no_milters", INPUT_TRANSP_MILTER,
  79         0,
  80     };
  81
  82     return (name_mask(param_name, table, pattern));
  83 }
  84
  85 /* input_transp_cleanup - adjust cleanup options */
  86
  87 int     input_transp_cleanup(int cleanup_flags, int transp_mask)
  88 {
  89     const char *myname = "input_transp_cleanup";
  90
  91     if (msg_verbose)
  92         msg_info("before %s: cleanup flags = %s",
  93                  myname, cleanup_strflags(cleanup_flags));
  94     if (transp_mask & INPUT_TRANSP_ADDRESS_MAPPING)
  95         cleanup_flags &= ~(CLEANUP_FLAG_BCC_OK | CLEANUP_FLAG_MAP_OK);
  96     if (transp_mask & INPUT_TRANSP_HEADER_BODY)
  97         cleanup_flags &= ~CLEANUP_FLAG_FILTER;
  98     if (transp_mask & INPUT_TRANSP_MILTER)
  99         cleanup_flags &= ~CLEANUP_FLAG_MILTER;
 100     if (msg_verbose)
 101         msg_info("after %s: cleanup flags = %s",
 102                  myname, cleanup_strflags(cleanup_flags));
 103     return (cleanup_flags);
 104 }