*/
#include "includes.h"
-RCSID("$OpenBSD: sshd.c,v 1.258 2002/09/13 19:23:09 stevesk Exp $");
+RCSID("$OpenBSD: sshd.c,v 1.268 2003/06/04 10:23:48 djm Exp $");
#include <openssl/dh.h>
#include <openssl/bn.h>
* Flag indicating whether IPv4 or IPv6. This can be set on the command line.
* Default value is AF_UNSPEC means both IPv4 and IPv6.
*/
-#ifdef IPV4_DEFAULT
-int IPv4or6 = AF_INET;
-#else
int IPv4or6 = AF_UNSPEC;
-#endif
/*
* Debug mode flag. This can be set on the command line. If debug
int startup_pipe; /* in child */
/* variables used for privilege separation */
-extern struct monitor *pmonitor;
-extern int use_privsep;
+int use_privsep;
+struct monitor *pmonitor;
/* Prototypes for various functions defined later in this file. */
void destroy_sensitive_data(void);
static void
sighup_restart(void)
{
- log("Received SIGHUP; restarting.");
+ logit("Received SIGHUP; restarting.");
close_listen_socks();
close_startup_pipes();
execv(saved_argv[0], saved_argv);
- log("RESTART FAILED: av[0]='%.100s', error: %.100s.", saved_argv[0],
+ logit("RESTART FAILED: av[0]='%.100s', error: %.100s.", saved_argv[0],
strerror(errno));
exit(1);
}
/* XXX no idea how fix this signal handler */
/* Log error and exit. */
- fatal("Timeout before authentication for %s.", get_remote_ipaddr());
+ fatal("Timeout before authentication for %s", get_remote_ipaddr());
}
/*
if (atomicio(write, sock_out, server_version_string,
strlen(server_version_string))
!= strlen(server_version_string)) {
- log("Could not write ident string to %s", get_remote_ipaddr());
+ logit("Could not write ident string to %s", get_remote_ipaddr());
fatal_cleanup();
}
memset(buf, 0, sizeof(buf));
for (i = 0; i < sizeof(buf) - 1; i++) {
if (atomicio(read, sock_in, &buf[i], 1) != 1) {
- log("Did not receive identification string from %s",
+ logit("Did not receive identification string from %s",
get_remote_ipaddr());
fatal_cleanup();
}
(void) atomicio(write, sock_out, s, strlen(s));
close(sock_in);
close(sock_out);
- log("Bad protocol version identification '%.100s' from %s",
+ logit("Bad protocol version identification '%.100s' from %s",
client_version_string, get_remote_ipaddr());
fatal_cleanup();
}
compat_datafellows(remote_version);
+ if (datafellows & SSH_BUG_PROBE) {
+ logit("probed from %s with %s. Don't panic.",
+ get_remote_ipaddr(), client_version_string);
+ fatal_cleanup();
+ }
+
if (datafellows & SSH_BUG_SCANNER) {
- log("scanned from %s with %s. Don't panic.",
+ logit("scanned from %s with %s. Don't panic.",
get_remote_ipaddr(), client_version_string);
fatal_cleanup();
}
(void) atomicio(write, sock_out, s, strlen(s));
close(sock_in);
close(sock_out);
- log("Protocol major versions differ for %s: %.200s vs. %.200s",
+ logit("Protocol major versions differ for %s: %.200s vs. %.200s",
get_remote_ipaddr(),
server_version_string, client_version_string);
fatal_cleanup();
do_setusercontext(pw);
#else
gidset[0] = pw->pw_gid;
- if (setgid(pw->pw_gid) < 0)
- fatal("setgid failed for %u", pw->pw_gid );
if (setgroups(1, gidset) < 0)
fatal("setgroups: %.100s", strerror(errno));
permanently_set_uid(pw);
__progname = get_progname(av[0]);
init_rng();
- /* Save argv. */
+ /* Save argv. Duplicate so setproctitle emulation doesn't clobber it */
saved_argc = ac;
- saved_argv = av;
+ saved_argv = xmalloc(sizeof(*saved_argv) * (ac + 1));
+ for (i = 0; i < ac; i++)
+ saved_argv[i] = xstrdup(av[i]);
+ saved_argv[i] = NULL;
+
+#ifndef HAVE_SETPROCTITLE
+ /* Prepare for later setproctitle emulation */
+ compat_init_setproctitle(ac, av);
+ av = saved_argv;
+#endif
/* Initialize configuration options to their default values. */
initialize_server_options(&options);
SYSLOG_LEVEL_INFO : options.log_level,
options.log_facility == SYSLOG_FACILITY_NOT_SET ?
SYSLOG_FACILITY_AUTH : options.log_facility,
- !inetd_flag);
+ log_stderr || !inetd_flag);
-#if defined(_CRAY) && !defined(_CRAYSV2)
+#ifdef _UNICOS
/* Cray can define user privs drop all prives now!
* Not needed on PRIV_SU systems!
*/
key_type(key));
}
if ((options.protocol & SSH_PROTO_1) && !sensitive_data.have_ssh1_key) {
- log("Disabling protocol version 1. Could not load host key");
+ logit("Disabling protocol version 1. Could not load host key");
options.protocol &= ~SSH_PROTO_1;
}
if ((options.protocol & SSH_PROTO_2) && !sensitive_data.have_ssh2_key) {
- log("Disabling protocol version 2. Could not load host key");
+ logit("Disabling protocol version 2. Could not load host key");
options.protocol &= ~SSH_PROTO_2;
}
if (!(options.protocol & (SSH_PROTO_1|SSH_PROTO_2))) {
- log("sshd: no hostkeys available -- exiting.");
+ logit("sshd: no hostkeys available -- exiting.");
exit(1);
}
#else
if (st.st_uid != 0 || (st.st_mode & (S_IWGRP|S_IWOTH)) != 0)
#endif
- fatal("Bad owner or mode for %s",
- _PATH_PRIVSEP_CHROOT_DIR);
+ fatal("%s must be owned by root and not group or "
+ "world-writable.", _PATH_PRIVSEP_CHROOT_DIR);
}
/* Configuration looks good, so exit if in test mode. */
continue;
}
/* Create socket for listening. */
- listen_sock = socket(ai->ai_family, SOCK_STREAM, 0);
+ listen_sock = socket(ai->ai_family, ai->ai_socktype,
+ ai->ai_protocol);
if (listen_sock < 0) {
/* kernel may not support ipv6 */
verbose("socket: %.100s", strerror(errno));
num_listen_socks++;
/* Start listening on the port. */
- log("Server listening on %s port %s.", ntop, strport);
+ logit("Server listening on %s port %s.", ntop, strport);
if (listen(listen_sock, 5) < 0)
fatal("listen: %.100s", strerror(errno));
if (ret < 0 && errno != EINTR)
error("select: %.100s", strerror(errno));
if (received_sigterm) {
- log("Received signal %d; terminating.",
+ logit("Received signal %d; terminating.",
(int) received_sigterm);
close_listen_socks();
unlink(options.pid_file);
if ((options.protocol & SSH_PROTO_1) &&
key_used == 0) {
/* Schedule server key regeneration alarm. */
- signal(SIGALRM, key_regeneration_alarm);
+ mysignal(SIGALRM, key_regeneration_alarm);
alarm(options.key_regeneration_time);
key_used = 1;
}
* setlogin() affects the entire process group. We don't
* want the child to be able to affect the parent.
*/
-#if 0
- /* XXX: this breaks Solaris */
+#if !defined(SSHD_ACQUIRES_CTTY)
+ /*
+ * If setsid is called, on some platforms sshd will later acquire a
+ * controlling terminal which will result in "could not set
+ * controlling tty" errors.
+ */
if (!debug_flag && !inetd_flag && setsid() < 0)
error("setsid: %.100s", strerror(errno));
#endif
* mode; it is just annoying to have the server exit just when you
* are about to discover the bug.
*/
- signal(SIGALRM, grace_alarm_handler);
+ mysignal(SIGALRM, grace_alarm_handler);
if (!debug_flag)
alarm(options.login_grace_time);
verbose("Closing connection to %.100s", remote_ip);
#ifdef USE_PAM
- finish_pam();
+ if (options.use_pam)
+ finish_pam();
#endif /* USE_PAM */
packet_close();
u_char *buf = xmalloc(bytes);
MD5_CTX md;
- log("do_connection: generating a fake encryption key");
+ logit("do_connection: generating a fake encryption key");
BN_bn2bin(session_key_int, buf);
MD5_Init(&md);
MD5_Update(&md, buf, bytes);
/* start key exchange */
kex = kex_setup(myproposal);
+ kex->kex[KEX_DH_GRP1_SHA1] = kexdh_server;
+ kex->kex[KEX_DH_GEX_SHA1] = kexgex_server;
kex->server = 1;
kex->client_version_string=client_version_string;
kex->server_version_string=server_version_string;
andersk / openssh.git / blobdiff