*/
#include "includes.h"
-RCSID("$OpenBSD: session.c,v 1.128 2002/02/16 00:51:44 markus Exp $");
+RCSID("$OpenBSD: session.c,v 1.134 2002/03/29 18:59:31 markus Exp $");
#include "ssh.h"
#include "ssh1.h"
#include "serverloop.h"
#include "canohost.h"
#include "session.h"
+#include "monitor_wrap.h"
#ifdef GSSAPI
#include "ssh-gss.h"
#define is_winnt (GetVersion() < 0x80000000)
#endif
-/* types */
-
-#define TTYSZ 64
-typedef struct Session Session;
-struct Session {
- int used;
- int self;
- struct passwd *pw;
- Authctxt *authctxt;
- pid_t pid;
- /* tty */
- char *term;
- int ptyfd, ttyfd, ptymaster;
- int row, col, xpixel, ypixel;
- char tty[TTYSZ];
- /* X11 */
- int display_number;
- char *display;
- int screen;
- char *auth_display;
- char *auth_proto;
- char *auth_data;
- int single_connection;
- /* proto 2 */
- int chanid;
- int is_subsystem;
-};
-
/* func */
Session *session_new(void);
void session_set_fds(Session *, int, int, int);
-static void session_pty_cleanup(void *);
+void session_pty_cleanup(void *);
void session_proctitle(Session *);
int session_setup_x11fwd(Session *);
void do_exec_pty(Session *, const char *);
static void do_authenticated1(Authctxt *);
static void do_authenticated2(Authctxt *);
-static void session_close(Session *);
static int session_pty_req(Session *);
/* import */
#endif /* WITH_AIXAUTHENTICATE */
#ifdef HAVE_LOGIN_CAP
-static login_cap_t *lc;
+login_cap_t *lc;
#endif
void
close(startup_pipe);
startup_pipe = -1;
}
-#if defined(HAVE_LOGIN_CAP) && defined(HAVE_PW_CLASS_IN_PASSWD)
- if ((lc = login_getclass(authctxt->pw->pw_class)) == NULL) {
- error("unable to get login class");
- return;
- }
-#ifdef BSD_AUTH
- if (auth_approval(NULL, lc, authctxt->pw->pw_name, "ssh") <= 0) {
- packet_disconnect("Approval failure for %s",
- authctxt->pw->pw_name);
- }
-#endif
-#endif
#ifdef WITH_AIXAUTHENTICATE
/* We don't have a pty yet, so just label the line as "ssh" */
if (loginsuccess(authctxt->user,
do_login(Session *s, const char *command)
{
char *time_string;
- char hostname[MAXHOSTNAMELEN];
socklen_t fromlen;
struct sockaddr_storage from;
- time_t last_login_time;
struct passwd * pw = s->pw;
pid_t pid = getpid();
}
}
- /* Get the time and hostname when the user last logged in. */
- if (options.print_lastlog) {
- hostname[0] = '\0';
- last_login_time = get_last_login_time(pw->pw_uid, pw->pw_name,
- hostname, sizeof(hostname));
- }
-
/* Record that there was a login on that tty from the remote host. */
- record_login(pid, s->tty, pw->pw_name, pw->pw_uid,
- get_remote_name_or_ip(utmp_len, options.verify_reverse_mapping),
- (struct sockaddr *)&from);
+ if (!use_privsep)
+ record_login(pid, s->tty, pw->pw_name, pw->pw_uid,
+ get_remote_name_or_ip(utmp_len,
+ options.verify_reverse_mapping),
+ (struct sockaddr *)&from);
#ifdef USE_PAM
/*
printf("%s\n", aixloginmsg);
#endif /* WITH_AIXAUTHENTICATE */
- if (options.print_lastlog && last_login_time != 0) {
- time_string = ctime(&last_login_time);
+ if (options.print_lastlog && s->last_login_time != 0) {
+ time_string = ctime(&s->last_login_time);
if (strchr(time_string, '\n'))
*strchr(time_string, '\n') = 0;
- if (strcmp(hostname, "") == 0)
+ if (strcmp(s->hostname, "") == 0)
printf("Last login: %s\r\n", time_string);
else
- printf("Last login: %s from %s\r\n", time_string, hostname);
+ printf("Last login: %s from %s\r\n", time_string,
+ s->hostname);
}
do_motd();
* needed for loading shared libraries. So the path better
* remains intact here.
*/
+# ifdef SUPERUSER_PATH
+ child_set_env(&env, &envsize, "PATH",
+ s->pw->pw_uid == 0 ? SUPERUSER_PATH : _PATH_STDPATH);
+# else
child_set_env(&env, &envsize, "PATH", _PATH_STDPATH);
+# endif /* SUPERUSER_PATH */
# endif /* HAVE_CYGWIN */
#endif /* HAVE_LOGIN_CAP */
}
/* Set login name, uid, gid, and groups. */
-static void
+void
do_setusercontext(struct passwd *pw)
{
#ifdef HAVE_CYGWIN
fatal("Failed to set uids to %u.", (u_int) pw->pw_uid);
}
+static void
+launch_login(struct passwd *pw, const char *hostname)
+{
+ /* Launch login(1). */
+
+ execl("/usr/bin/login", "login", "-h", hostname,
+#ifdef xxxLOGIN_NEEDS_TERM
+ (s->term ? s->term : "unknown"),
+#endif /* LOGIN_NEEDS_TERM */
+#ifdef LOGIN_NO_ENDOPT
+ "-p", "-f", pw->pw_name, (char *)NULL);
+#else
+ "-p", "-f", "--", pw->pw_name, (char *)NULL);
+#endif
+
+ /* Login couldn't be executed, die. */
+
+ perror("login");
+ exit(1);
+}
+
/*
* Performs common processing for the child, such as setting up the
* environment, closing extra file descriptors, setting the user and group
signal(SIGPIPE, SIG_DFL);
if (options.use_login) {
- /* Launch login(1). */
-
- execl(LOGIN_PROGRAM, "login", "-h", hostname,
-#ifdef LOGIN_NEEDS_TERM
- (s->term ? s->term : "unknown"),
-#endif /* LOGIN_NEEDS_TERM */
- "-p", "-f", "--", pw->pw_name, (char *)NULL);
-
- /* Login couldn't be executed, die. */
-
- perror("login");
- exit(1);
+ launch_login(pw, hostname);
+ /* NEVERREACHED */
}
/* Get the last component of the shell name. */
return 1;
}
+Session *
+session_by_tty(char *tty)
+{
+ int i;
+ for (i = 0; i < MAX_SESSIONS; i++) {
+ Session *s = &sessions[i];
+ if (s->used && s->ttyfd != -1 && strcmp(s->tty, tty) == 0) {
+ debug("session_by_tty: session %d tty %s", i, tty);
+ return s;
+ }
+ }
+ debug("session_by_tty: unknown tty %.100s", tty);
+ session_dump();
+ return NULL;
+}
+
static Session *
session_by_channel(int id)
{
packet_disconnect("Protocol error: you already have a pty.");
return 0;
}
+ /* Get the time and hostname when the user last logged in. */
+ if (options.print_lastlog) {
+ s->hostname[0] = '\0';
+ s->last_login_time = get_last_login_time(s->pw->pw_uid,
+ s->pw->pw_name, s->hostname, sizeof(s->hostname));
+ }
s->term = packet_get_string(&len);
/* Allocate a pty and open it. */
debug("Allocating pty.");
- if (!pty_allocate(&s->ptyfd, &s->ttyfd, s->tty, sizeof(s->tty))) {
+ if (!PRIVSEP(pty_allocate(&s->ptyfd, &s->ttyfd, s->tty, sizeof(s->tty)))) {
if (s->term)
xfree(s->term);
s->term = NULL;
* time in case we call fatal() (e.g., the connection gets closed).
*/
fatal_add_cleanup(session_pty_cleanup, (void *)s);
- pty_setowner(s->pw, s->tty);
+ if (!use_privsep)
+ pty_setowner(s->pw, s->tty);
/* Set window size from the packet. */
pty_change_window_size(s->ptyfd, s->row, s->col, s->xpixel, s->ypixel);
* Function to perform pty cleanup. Also called if we get aborted abnormally
* (e.g., due to a dropped connection).
*/
-static void
-session_pty_cleanup(void *session)
+void
+session_pty_cleanup2(void *session)
{
Session *s = session;
record_logout(s->pid, s->tty, s->pw->pw_name);
/* Release the pseudo-tty. */
- pty_release(s->tty);
+ if (getuid() == 0)
+ pty_release(s->tty);
/*
* Close the server side of the socket pairs. We must do this after
* while we're still cleaning up.
*/
if (close(s->ptymaster) < 0)
- error("close(s->ptymaster): %s", strerror(errno));
+ error("close(s->ptymaster/%d): %s", s->ptymaster, strerror(errno));
/* unlink pty from session */
s->ttyfd = -1;
}
+void
+session_pty_cleanup(void *session)
+{
+ PRIVSEP(session_pty_cleanup2(session));
+}
+
static void
session_exit_message(Session *s, int status)
{
s->chanid = -1;
}
-static void
+void
session_close(Session *s)
{
debug("session_close: session %d pid %d", s->self, s->pid);
}
void
-session_destroy_all(void)
+session_destroy_all(void (*closefunc)(Session *))
{
int i;
for (i = 0; i < MAX_SESSIONS; i++) {
Session *s = &sessions[i];
- if (s->used)
- session_close(s);
+ if (s->used) {
+ if (closefunc != NULL)
+ closefunc(s);
+ else
+ session_close(s);
+ }
}
}
andersk / gssapi-openssh.git / blobdiff