From 49f2d67070b51f6b72f8189b53abe9de6e2c727b Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Thu, 22 Dec 2022 16:45:13 -0700
Subject: [PATCH] Fix support for AIX-style path(module) syntax in sudo.conf
 Plugin lines.

---
 lib/util/sudo_dso.c |  2 +-
 src/load_plugins.c  | 16 +++++++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/lib/util/sudo_dso.c b/lib/util/sudo_dso.c
index c4fa0a5df..3516a641b 100644
--- a/lib/util/sudo_dso.c
+++ b/lib/util/sudo_dso.c
@@ -240,7 +240,7 @@ sudo_dso_load_v1(const char *path, int mode)
     cp = strrchr(path, '(');
     if (cp != NULL) {
 	size_t len = strlen(cp);
-	if (len > 2 && cp[len - 1] == '\0')
+	if (len > 2 && cp[len - 1] == ')')
 	    SET(flags, RTLD_MEMBER);
     }
 # endif /* RTLD_MEMBER */
diff --git a/src/load_plugins.c b/src/load_plugins.c
index 573460299..376306c3d 100644
--- a/src/load_plugins.c
+++ b/src/load_plugins.c
@@ -82,7 +82,21 @@ sudo_stat_plugin(struct plugin_info *info, char *fullpath,
 	}
 	status = stat(fullpath, sb);
     }
-    if (status == -1) {
+#ifdef _AIX
+    if (status == -1 && errno == ENOENT) {
+	/* Check for AIX path(module) syntax. */
+	char *cp = strrchr(fullpath, '(');
+	if (cp != NULL) {
+	    /* Only for archive files (e.g. sudoers.a). */
+	    if (cp > fullpath + 2 && cp[-2] == '.' && cp[-1] == 'a') {
+		*cp = '\0';
+		status = stat(fullpath, sb);
+		*cp = '(';
+	    }
+	}
+    }
+#endif /* _AIX */
+    if (status == -1 && errno == ENOENT) {
 	char *newpath = sudo_stat_multiarch(fullpath, sb);
 	if (newpath != NULL) {
 	    len = strlcpy(fullpath, newpath, pathsize);