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/*++
/* NAME
/* local_transport 3
/* SUMMARY
/* determine if transport delivers locally
/* SYNOPSIS
/* #include <local_transport.h>
/*
/* const char *get_def_local_transport()
/*
/* int match_def_local_transport(transport)
/* const char *transport;
/*
/* int match_any_local_transport(transport)
/* const char *transport;
/* DESCRIPTION
/* This module uses the information kept in the "local_transports"
/* configuration parameter, which lists the name of the default
/* local transport, followed by the names of zero or more other
/* transports that deliver locally.
/*
/* get_def_local_transport() returns the name of the default local
/* transport, that is, the first transport name specified with
/* the "local_transports" configuration parameter.
/*
/* match_def_local_transport() determines if the named transport is
/* identical to the default local transport.
/*
/* match_any_local_transport() determines if the named transport is
/* listed in the "local_transports" configuration parameter.
/* SEE ALSO
/* resolve_local(3), see if address resolves locally
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <string.h>
/* Utility library. */
#include <msg.h>
#include <mymalloc.h>
#include <string_list.h>
/* Global library. */
#include <mail_params.h>
#include <local_transport.h>
/* Application-specific */
static STRING_LIST *local_transport_list;
static char *local_transport_name;
/* local_transport_init - initialize lookup table */
static void local_transport_init(void)
{
char *myname = "local_transport_init";
/*
* Sanity check.
*/
if (local_transport_list || local_transport_name)
msg_panic("local_transport_init: duplicate initialization");
/*
* Initialize.
*/
local_transport_list = string_list_init(var_local_transports);
local_transport_name = mystrndup(var_local_transports,
strcspn(var_local_transports, ", \t\r\n"));
/*
* Sanity check.
*/
if (!match_any_local_transport(local_transport_name)
|| !match_def_local_transport(local_transport_name))
msg_panic("%s: unable to intialize", myname);
}
/* get_def_local_transport - determine default local transport */
const char *get_def_local_transport(void)
{
/*
* Initialize on the fly.
*/
if (local_transport_name == 0)
local_transport_init();
/*
* Return the first transport listed.
*/
return (local_transport_name);
}
/* match_def_local_transport - match against default local transport */
int match_def_local_transport(const char *transport)
{
/*
* Initialize on the fly.
*/
if (local_transport_list == 0)
local_transport_init();
/*
* Compare the transport against the list of transports that are listed
* as delivering locally.
*/
return (strcmp(transport, local_transport_name) == 0);
}
/* match_any_local_transport - match against list of local transports */
int match_any_local_transport(const char *transport)
{
/*
* Initialize on the fly.
*/
if (local_transport_list == 0)
local_transport_init();
/*
* Compare the transport against the list of transports that are listed
* as delivering locally.
*/
return (string_list_match(local_transport_list, transport));
}
#ifdef TEST
#include <vstream.h>
#include <mail_conf.h>
int main(int argc, char **argv)
{
if (argc != 2)
msg_fatal("usage: %s transport", argv[0]);
mail_conf_read();
vstream_printf("%s\n", match_any_local_transport(argv[1]) ? "yes" : "no");
vstream_fflush(VSTREAM_OUT);
}
#endif
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