1 /* $Cambridge: exim/src/src/routers/rf_get_ugid.c,v 1.5 2009/11/16 19:50:38 nm4 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2009 */
8 /* See the file NOTICE for conditions of use and distribution. */
11 #include "rf_functions.h"
14 /*************************************************
15 * Get uid/gid for a router *
16 *************************************************/
18 /* This function is called by routers to sort out the uid/gid values which are
19 passed with an address for use by local transports.
22 rblock the router block
23 addr the address being worked on
24 ugid pointer to a ugid block to fill in
26 Returns: TRUE if all goes well, else FALSE
30 rf_get_ugid(router_instance *rblock, address_item *addr, ugid_block *ugid)
32 struct passwd *upw = NULL;
34 /* Initialize from fixed values */
36 ugid->uid = rblock->uid;
37 ugid->gid = rblock->gid;
38 ugid->uid_set = rblock->uid_set;
39 ugid->gid_set = rblock->gid_set;
40 ugid->initgroups = rblock->initgroups;
42 /* If there is no fixed uid set, see if there's a dynamic one that can
43 be expanded and possibly looked up. */
45 if (!ugid->uid_set && rblock->expand_uid != NULL)
47 if (route_find_expanded_user(rblock->expand_uid, rblock->name, US"router",
48 &upw, &(ugid->uid), &(addr->message))) ugid->uid_set = TRUE;
52 /* Likewise for the gid */
54 if (!ugid->gid_set && rblock->expand_gid != NULL)
56 if (route_find_expanded_group(rblock->expand_gid, rblock->name, US"router",
57 &(ugid->gid), &(addr->message))) ugid->gid_set = TRUE;
61 /* If a uid is set, then a gid must also be available; use one from the passwd
62 lookup if it happened. */
64 if (ugid->uid_set && !ugid->gid_set)
68 ugid->gid = upw->pw_gid;
73 addr->message = string_sprintf("user set without group for %s router",
82 /* End of rf_get_ugid.c */