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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 09:44:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 09:44:07 +0000
commit39ce00b8d520cbecbd6af87257e8fb11df0ec273 (patch)
tree4c21a2674c19e5c44be3b3550b476b9e63d8ae3d /src/routers/rf_get_ugid.c
parentInitial commit. (diff)
downloadexim4-39ce00b8d520cbecbd6af87257e8fb11df0ec273.tar.xz
exim4-39ce00b8d520cbecbd6af87257e8fb11df0ec273.zip
Adding upstream version 4.94.2.upstream/4.94.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/routers/rf_get_ugid.c')
-rw-r--r--src/routers/rf_get_ugid.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/src/routers/rf_get_ugid.c b/src/routers/rf_get_ugid.c
new file mode 100644
index 0000000..1735e59
--- /dev/null
+++ b/src/routers/rf_get_ugid.c
@@ -0,0 +1,80 @@
+/*************************************************
+* 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 */