#include "includes.h"
#include "openbsd-compat/sys-queue.h"
-RCSID("$OpenBSD: ssh-agent.c,v 1.112 2003/09/18 08:49:45 markus Exp $");
+RCSID("$OpenBSD: ssh-agent.c,v 1.117 2003/12/02 17:01:15 markus Exp $");
#include <openssl/evp.h>
#include <openssl/md5.h>
#include "scard.h"
#endif
+#if defined(HAVE_SYS_PRCTL_H)
+#include <sys/prctl.h> /* For prctl() and PR_SET_DUMPABLE */
+#endif
+
typedef enum {
AUTH_UNUSED,
AUTH_SOCKET,
p = read_passphrase(prompt, RP_ALLOW_EOF);
if (p != NULL) {
/*
- * Accept empty responses and responses consisting
+ * Accept empty responses and responses consisting
* of the word "yes" as affirmative.
*/
if (*p == '\0' || *p == '\n' || strcasecmp(p, "yes") == 0)
}
static void
-cleanup_socket(void *p)
+cleanup_socket(void)
{
if (socket_name[0])
unlink(socket_name);
rmdir(socket_dir);
}
-static void
+void
cleanup_exit(int i)
{
- cleanup_socket(NULL);
- exit(i);
+ cleanup_socket();
+ _exit(i);
}
static void
cleanup_handler(int sig)
{
- cleanup_socket(NULL);
+ cleanup_socket();
_exit(2);
}
setegid(getgid());
setgid(getgid());
+#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE)
+ /* Disable ptrace on Linux without sgid bit */
+ prctl(PR_SET_DUMPABLE, 0);
+#endif
+
SSLeay_add_all_algorithms();
__progname = ssh_get_progname(av[0]);
if (agentsocket == NULL) {
/* Create private directory for agent socket */
- strlcpy(socket_dir, "/tmp/ssh-XXXXXXXX", sizeof socket_dir);
+ strlcpy(socket_dir, "/tmp/ssh-XXXXXXXXXX", sizeof socket_dir);
if (mkdtemp(socket_dir) == NULL) {
perror("mkdtemp: private socket dir");
exit(1);
#ifdef HAVE_CYGWIN
umask(prev_mask);
#endif
- if (listen(sock, 128) < 0) {
+ if (listen(sock, SSH_LISTEN_BACKLOG) < 0) {
perror("listen");
cleanup_exit(1);
}
#endif
skip:
- fatal_add_cleanup(cleanup_socket, NULL);
new_socket(AUTH_SOCKET, sock);
if (ac > 0) {
mysignal(SIGALRM, check_parent_exists);