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/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
/* Copyright (c) University of Cambridge 1995 - 2009 */
/* See the file NOTICE for conditions of use and distribution. */
#include "../exim.h"
#include "rf_functions.h"
/*************************************************
* Get uid/gid for a router *
*************************************************/
/* This function is called by routers to sort out the uid/gid values which are
passed with an address for use by local transports.
Arguments:
rblock the router block
addr the address being worked on
ugid pointer to a ugid block to fill in
Returns: TRUE if all goes well, else FALSE
*/
BOOL
rf_get_ugid(router_instance *rblock, address_item *addr, ugid_block *ugid)
{
struct passwd *upw = NULL;
/* Initialize from fixed values */
ugid->uid = rblock->uid;
ugid->gid = rblock->gid;
ugid->uid_set = rblock->uid_set;
ugid->gid_set = rblock->gid_set;
ugid->initgroups = rblock->initgroups;
/* If there is no fixed uid set, see if there's a dynamic one that can
be expanded and possibly looked up. */
if (!ugid->uid_set && rblock->expand_uid != NULL)
{
if (route_find_expanded_user(rblock->expand_uid, rblock->name, US"router",
&upw, &(ugid->uid), &(addr->message))) ugid->uid_set = TRUE;
else return FALSE;
}
/* Likewise for the gid */
if (!ugid->gid_set && rblock->expand_gid != NULL)
{
if (route_find_expanded_group(rblock->expand_gid, rblock->name, US"router",
&(ugid->gid), &(addr->message))) ugid->gid_set = TRUE;
else return FALSE;
}
/* If a uid is set, then a gid must also be available; use one from the passwd
lookup if it happened. */
if (ugid->uid_set && !ugid->gid_set)
{
if (upw != NULL)
{
ugid->gid = upw->pw_gid;
ugid->gid_set = TRUE;
}
else
{
addr->message = string_sprintf("user set without group for %s router",
rblock->name);
return FALSE;
}
}
return TRUE;
}
/* End of rf_get_ugid.c */
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