+/* $OpenBSD: sshd.c,v 1.330 2006/03/25 13:17:02 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
*/
#include "includes.h"
-RCSID("$OpenBSD: sshd.c,v 1.319 2006/02/08 12:15:27 stevesk Exp $");
+#include <sys/types.h>
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+
+#ifdef HAVE_PATHS_H
#include <paths.h>
+#endif
+#include <signal.h>
#include <openssl/dh.h>
#include <openssl/bn.h>
* the effect is to reread the configuration file (and to regenerate
* the server key).
*/
+
+/*ARGSUSED*/
static void
sighup_handler(int sig)
{
/*
* Generic signal handler for terminating signals in the master daemon.
*/
+/*ARGSUSED*/
static void
sigterm_handler(int sig)
{
* SIGCHLD handler. This is called whenever a child dies. This will then
* reap any zombies left by exited children.
*/
+/*ARGSUSED*/
static void
main_sigchld_handler(int sig)
{
/*
* Signal handler for the alarm after the login grace period has expired.
*/
+/*ARGSUSED*/
static void
grace_alarm_handler(int sig)
{
arc4random_stir();
}
+/*ARGSUSED*/
static void
key_regeneration_alarm(int sig)
{
{
extern char *optarg;
extern int optind;
- int opt, j, i, fdsetsz, on = 1;
+ int opt, j, i, on = 1;
int sock_in = -1, sock_out = -1, newsock = -1;
pid_t pid;
socklen_t fromlen;
options.log_level = SYSLOG_LEVEL_QUIET;
break;
case 'b':
- options.server_key_bits = atoi(optarg);
+ options.server_key_bits = (int)strtonum(optarg, 256,
+ 32768, NULL);
break;
case 'p':
options.ports_from_cmdline = 1;
test_flag = 1;
break;
case 'u':
- utmp_len = atoi(optarg);
+ utmp_len = (u_int)strtonum(optarg, 0, MAXHOSTNAMELEN+1, NULL);
if (utmp_len > MAXHOSTNAMELEN) {
fprintf(stderr, "Invalid utmp length.\n");
exit(1);
debug("sshd version %.100s", SSH_RELEASE);
/* load private host keys */
- sensitive_data.host_keys = xmalloc(options.num_host_key_files *
+ sensitive_data.host_keys = xcalloc(options.num_host_key_files,
sizeof(Key *));
for (i = 0; i < options.num_host_key_files; i++)
sensitive_data.host_keys[i] = NULL;
}
if (use_privsep) {
- struct passwd *pw;
struct stat st;
- if ((pw = getpwnam(SSH_PRIVSEP_USER)) == NULL)
+ if (getpwnam(SSH_PRIVSEP_USER) == NULL)
fatal("Privilege separation user %s does not exist",
SSH_PRIVSEP_USER);
if ((stat(_PATH_PRIVSEP_CHROOT_DIR, &st) == -1) ||
debug("setgroups() failed: %.200s", strerror(errno));
if (rexec_flag) {
- rexec_argv = xmalloc(sizeof(char *) * (rexec_argc + 2));
+ rexec_argv = xcalloc(rexec_argc + 2, sizeof(char *));
for (i = 0; i < rexec_argc; i++) {
debug("rexec_argv[%d]='%s'", i, saved_argv[i]);
rexec_argv[i] = saved_argv[i];
num_listen_socks++;
/* Start listening on the port. */
- logit("Server listening on %s port %s.", ntop, strport);
if (listen(listen_sock, SSH_LISTEN_BACKLOG) < 0)
- fatal("listen: %.100s", strerror(errno));
-
+ fatal("listen on [%s]:%s: %.100s",
+ ntop, strport, strerror(errno));
+ logit("Server listening on %s port %s.", ntop, strport);
}
freeaddrinfo(options.listen_addrs);
if (listen_socks[i] > maxfd)
maxfd = listen_socks[i];
/* pipes connected to unauthenticated childs */
- startup_pipes = xmalloc(options.max_startups * sizeof(int));
+ startup_pipes = xcalloc(options.max_startups, sizeof(int));
for (i = 0; i < options.max_startups; i++)
startup_pipes[i] = -1;
sighup_restart();
if (fdset != NULL)
xfree(fdset);
- fdsetsz = howmany(maxfd+1, NFDBITS) * sizeof(fd_mask);
- fdset = (fd_set *)xmalloc(fdsetsz);
- memset(fdset, 0, fdsetsz);
+ fdset = (fd_set *)xcalloc(howmany(maxfd + 1, NFDBITS),
+ sizeof(fd_mask));
for (i = 0; i < num_listen_socks; i++)
FD_SET(listen_socks[i], fdset);
if (!FD_ISSET(listen_socks[i], fdset))
continue;
fromlen = sizeof(from);
- newsock = accept(listen_socks[i], (struct sockaddr *)&from,
- &fromlen);
+ newsock = accept(listen_socks[i],
+ (struct sockaddr *)&from, &fromlen);
if (newsock < 0) {
if (errno != EINTR && errno != EWOULDBLOCK)
error("accept: %.100s", strerror(errno));
*/
if ((pid = fork()) == 0) {
/*
- * Child. Close the listening and max_startup
- * sockets. Start using the accepted socket.
- * Reinitialize logging (since our pid has
- * changed). We break out of the loop to handle
+ * Child. Close the listening and
+ * max_startup sockets. Start using
+ * the accepted socket. Reinitialize
+ * logging (since our pid has changed).
+ * We break out of the loop to handle
* the connection.
*/
startup_pipe = startup_p[1];
close_listen_socks();
sock_in = newsock;
sock_out = newsock;
- log_init(__progname, options.log_level, options.log_facility, log_stderr);
+ log_init(__progname,
+ options.log_level,
+ options.log_facility,
+ log_stderr);
if (rexec_flag)
close(config_s[0]);
break;
close(config_s[1]);
}
- /* Mark that the key has been used (it was "given" to the child). */
+ /*
+ * Mark that the key has been used (it
+ * was "given" to the child).
+ */
if ((options.protocol & SSH_PROTO_1) &&
key_used == 0) {
/* Schedule server key regeneration alarm. */
}
arc4random_stir();
-
- /* Close the new socket (the child is now taking care of it). */
close(newsock);
}
/* child process check (or debug mode) */
packet_set_nonblocking();
/* allocate authentication context */
- authctxt = xmalloc(sizeof(*authctxt));
- memset(authctxt, 0, sizeof(*authctxt));
+ authctxt = xcalloc(1, sizeof(*authctxt));
authctxt->loginmsg = &loginmsg;
{
int rsafail = 0;
- if (BN_cmp(sensitive_data.server_key->rsa->n, sensitive_data.ssh1_host_key->rsa->n) > 0) {
+ if (BN_cmp(sensitive_data.server_key->rsa->n,
+ sensitive_data.ssh1_host_key->rsa->n) > 0) {
/* Server key has bigger modulus. */
if (BN_num_bits(sensitive_data.server_key->rsa->n) <
- BN_num_bits(sensitive_data.ssh1_host_key->rsa->n) + SSH_KEY_BITS_RESERVED) {
- fatal("do_connection: %s: server_key %d < host_key %d + SSH_KEY_BITS_RESERVED %d",
+ BN_num_bits(sensitive_data.ssh1_host_key->rsa->n) +
+ SSH_KEY_BITS_RESERVED) {
+ fatal("do_connection: %s: "
+ "server_key %d < host_key %d + SSH_KEY_BITS_RESERVED %d",
get_remote_ipaddr(),
BN_num_bits(sensitive_data.server_key->rsa->n),
BN_num_bits(sensitive_data.ssh1_host_key->rsa->n),
} else {
/* Host key has bigger modulus (or they are equal). */
if (BN_num_bits(sensitive_data.ssh1_host_key->rsa->n) <
- BN_num_bits(sensitive_data.server_key->rsa->n) + SSH_KEY_BITS_RESERVED) {
- fatal("do_connection: %s: host_key %d < server_key %d + SSH_KEY_BITS_RESERVED %d",
+ BN_num_bits(sensitive_data.server_key->rsa->n) +
+ SSH_KEY_BITS_RESERVED) {
+ fatal("do_connection: %s: "
+ "host_key %d < server_key %d + SSH_KEY_BITS_RESERVED %d",
get_remote_ipaddr(),
BN_num_bits(sensitive_data.ssh1_host_key->rsa->n),
BN_num_bits(sensitive_data.server_key->rsa->n),
myproposal[PROPOSAL_COMP_ALGS_CTOS] =
myproposal[PROPOSAL_COMP_ALGS_STOC] = "none,zlib@openssh.com";
}
-
+
myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] = list_hostkey_types();
/* start key exchange */
kex->kex[KEX_DH_GRP1_SHA1] = kexdh_server;
kex->kex[KEX_DH_GRP14_SHA1] = kexdh_server;
kex->kex[KEX_DH_GEX_SHA1] = kexgex_server;
+ kex->kex[KEX_DH_GEX_SHA256] = kexgex_server;
kex->server = 1;
kex->client_version_string=client_version_string;
kex->server_version_string=server_version_string;
andersk / openssh.git / blobdiff