shadow-utils/shadow-4.1.5.1-ingroup.patch

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diff -up shadow-4.1.5.1/src/newgrp.c.ingroup shadow-4.1.5.1/src/newgrp.c
--- shadow-4.1.5.1/src/newgrp.c.ingroup 2014-08-29 13:31:38.000000000 +0200
+++ shadow-4.1.5.1/src/newgrp.c 2014-08-29 14:04:57.183849650 +0200
@@ -83,15 +83,29 @@ static void usage (void)
}
}
+static bool ingroup(const char *name, struct group *gr)
+{
+ char **look;
+ bool notfound = true;
+
+ look = gr->gr_mem;
+ while (*look && notfound)
+ notfound = strcmp (*look++, name);
+
+ return !notfound;
+}
+
/*
- * find_matching_group - search all groups of a given group id for
+ * find_matching_group - search all groups of a gr's group id for
* membership of a given username
+ * but check gr itself first
*/
-static /*@null@*/struct group *find_matching_group (const char *name, gid_t gid)
+static /*@null@*/struct group *find_matching_group (const char *name, struct group *gr)
{
- struct group *gr;
- char **look;
- bool notfound = true;
+ gid_t gid = gr->gr_gid;
+
+ if (ingroup(name, gr))
+ return gr;
setgrent ();
while ((gr = getgrent ()) != NULL) {
@@ -103,14 +117,8 @@ static /*@null@*/struct group *find_matc
* A group with matching GID was found.
* Test for membership of 'name'.
*/
- look = gr->gr_mem;
- while ((NULL != *look) && notfound) {
- notfound = (strcmp (*look, name) != 0);
- look++;
- }
- if (!notfound) {
+ if (ingroup(name, gr))
break;
- }
}
endgrent ();
return gr;
@@ -616,7 +624,7 @@ int main (int argc, char **argv)
* groups of the same GID like the requested group for
* membership of the current user.
*/
- grp = find_matching_group (name, grp->gr_gid);
+ grp = find_matching_group (name, grp);
if (NULL == grp) {
/*
* No matching group found. As we already know that