1 files changed, 104 insertions, 0 deletions
diff --git a/utils/gssd/gss_clnt_send_err.c b/utils/gssd/gss_clnt_send_err.c
new file mode 100644
index 0000000..5260b53
--- /dev/null
+++ b/utils/gssd/gss_clnt_send_err.c
@@ -0,0 +1,104 @@
+/*
+  Copyright (c) 2000 The Regents of the University of Michigan.
+  All rights reserved.
+
+  Copyright (c) 2004 Bruce Fields <bfields@umich.edu>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+
+  1. Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+  3. Neither the name of the University nor the names of its
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <rpc/rpc.h>
+
+#include <unistd.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pwd.h>
+#include <fcntl.h>
+
+#include "gssd.h"
+#include "write_bytes.h"
+
+char pipefsdir[PATH_MAX] = GSSD_PIPEFS_DIR;
+
+static void
+usage(char *progname)
+{
+	fprintf(stderr, "usage: %s clntdir user [user ...]\n", progname);
+	exit(1);
+}
+
+static int
+do_error_downcall(int k5_fd, uid_t uid, int err)
+{
+	char    buf[1024];
+	char    *p = buf, *end = buf + 1024;
+	unsigned int timeout = 0;
+	int     zero = 0;
+
+	if (WRITE_BYTES(&p, end, uid)) return -1;
+	if (WRITE_BYTES(&p, end, timeout)) return -1;
+	/* use seq_win = 0 to indicate an error: */
+	if (WRITE_BYTES(&p, end, zero)) return -1;
+	if (WRITE_BYTES(&p, end, err)) return -1;
+
+	if (write(k5_fd, buf, p - buf) < p - buf) return -1;
+	return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+	int fd;
+	int i;
+	uid_t uid;
+	char *endptr;
+	struct passwd *pw;
+
+	if (argc < 3)
+		usage(argv[0]);
+	fd = open(argv[1], O_WRONLY);
+	if (fd == -1)
+		err(1, "unable to open %s", argv[1]);
+
+	for (i = 2; i < argc; i++) {
+		uid = strtol(argv[i], &endptr, 10);
+		if (*endptr != '\0') {
+			pw = getpwnam(argv[i]);
+			if (!pw)
+				err(1, "unknown user %s", argv[i]);
+			uid = pw->pw_uid;
+		}
+		if (do_error_downcall(fd, uid, -1))
+			err(1, "failed to destroy cred for user %s", argv[i]);
+	}
+	exit(0);
+}