Make get_remote_uid() work on BSD

I've attached a patch that will make file URIs work on operating systems that provide the getpeereid() function call to check the user ID of the peer connected to a UNIX domain socket.

Make get_remote_uid() work on BSD
dda5415d · Andreas Vögele · Max Kellermann · 43471144 · dda5415d · dda5415d
Commit dda5415d authored Jun 19, 2010 by Andreas Vögele Committed by Max Kellermann Jun 19, 2010
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configure.ac configure.ac +1 -0

listen.c src/listen.c +7 -1

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--- a/configure.ac
+++ b/configure.ac
@@ -445,6 +445,7 @@ esac
 if test x$enable_un = xyes; then
 	AC_DEFINE(HAVE_UN, 1, [Define if unix domain socket support is enabled])
 	STRUCT_UCRED
+	AC_CHECK_FUNCS(getpeereid)
 fi

 dnl --------------------------- Post Protocol Tests ---------------------------

--- a/src/listen.c
+++ b/src/listen.c
@@ -416,7 +416,13 @@ static int get_remote_uid(int fd)

 	return cred.uid;
 #else
-	(void)fd;
+#ifdef HAVE_GETPEEREID
+	uid_t euid;
+	gid_t egid;
+
+	if (getpeereid(fd, &euid, &egid) == 0)
+		return euid;
+#endif
 	return -1;
 #endif
 }