зеркало из https://github.com/Azure/sonic-openssh.git
Stupid djm commits experimental code to head instead of branch
revert
This commit is contained in:
Damien Miller
Родитель
3225fb454d
Коммит
3a5b023330
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@ -1,4 +1,4 @@
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# $Id: Makefile.in,v 1.198 2002/03/13 01:47:54 djm Exp $
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# $Id: Makefile.in,v 1.199 2002/03/13 02:19:42 djm Exp $
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prefix=@prefix@
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exec_prefix=@exec_prefix@
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@ -50,11 +50,11 @@ INSTALL_SSH_RAND_HELPER=@INSTALL_SSH_RAND_HELPER@
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TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-agent$(EXEEXT) scp$(EXEEXT) ssh-rand-helper${EXEEXT} $(SFTP_PROGS)
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LIBSSH_OBJS=atomicio.o authfd.o authfile.o bufaux.o buffer.o canohost.o channels.o cipher.o compat.o compress.o crc32.o deattack.o dh.o dispatch.o fatal.o mac.o hostfile.o key.o kex.o kexdh.o kexgex.o log.o match.o misc.o monitor_fdpass.c monitor_wrap.c mpaux.o nchan.o packet.o radix.o rijndael.o entropy.o readpass.o rsa.o scard.o ssh-dss.o ssh-rsa.o tildexpand.o ttymodes.o uidswap.o uuencode.o xmalloc.o
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LIBSSH_OBJS=atomicio.o authfd.o authfile.o bufaux.o buffer.o canohost.o channels.o cipher.o compat.o compress.o crc32.o deattack.o dh.o dispatch.o fatal.o mac.o hostfile.o key.o kex.o kexdh.o kexgex.o log.o match.o misc.o mpaux.o nchan.o packet.o radix.o rijndael.o entropy.o readpass.o rsa.o scard.o ssh-dss.o ssh-rsa.o tildexpand.o ttymodes.o uidswap.o uuencode.o xmalloc.o
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SSHOBJS= ssh.o sshconnect.o sshconnect1.o sshconnect2.o sshtty.o readconf.o clientloop.o
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SSHDOBJS= sshd.o auth.o auth1.o auth2.o auth-chall.o auth2-chall.o auth-rhosts.o auth-options.o auth-krb4.o auth-pam.o auth2-pam.o auth-passwd.o auth-rsa.o auth-rh-rsa.o auth-sia.o monitor.c monitor_mm.c sshpty.o sshlogin.o loginrec.o servconf.o serverloop.o md5crypt.o session.o groupaccess.o auth-skey.o auth-bsdauth.o
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SSHDOBJS= sshd.o auth.o auth1.o auth2.o auth-chall.o auth2-chall.o auth-rhosts.o auth-options.o auth-krb4.o auth-pam.o auth2-pam.o auth-passwd.o auth-rsa.o auth-rh-rsa.o auth-sia.o sshpty.o sshlogin.o loginrec.o servconf.o serverloop.o md5crypt.o session.o groupaccess.o auth-skey.o auth-bsdauth.o
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MANPAGES = scp.1.out ssh-add.1.out ssh-agent.1.out ssh-keygen.1.out ssh-keyscan.1.out ssh.1.out sshd.8.out sftp-server.8.out sftp.1.out
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MANPAGES_IN = scp.1 ssh-add.1 ssh-agent.1 ssh-keygen.1 ssh-keyscan.1 ssh.1 sshd.8 sftp-server.8 sftp.1
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4
auth.h
4
auth.h
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@ -121,8 +121,8 @@ void krb5_cleanup_proc(void *authctxt);
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#include "auth-pam.h"
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#include "auth2-pam.h"
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Authctxt *do_authentication(void);
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Authctxt *do_authentication2(void);
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void do_authentication(void);
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void do_authentication2(void);
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Authctxt *authctxt_new(void);
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void auth_log(Authctxt *, int, char *, char *);
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30
auth1.c
30
auth1.c
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@ -26,13 +26,8 @@ RCSID("$OpenBSD: auth1.c,v 1.35 2002/02/03 17:53:25 markus Exp $");
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#include "session.h"
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#include "misc.h"
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#include "uidswap.h"
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#include "monitor.h"
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#include "monitor_wrap.h"
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/* import */
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extern int use_privsep;
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extern int mm_recvfd;
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extern ServerOptions options;
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/*
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@ -360,13 +355,12 @@ do_authloop(Authctxt *authctxt)
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* Performs authentication of an incoming connection. Session key has already
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* been exchanged and encryption is enabled.
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*/
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Authctxt *
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void
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do_authentication(void)
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{
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Authctxt *authctxt;
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struct passwd *pw = NULL, *pwent;
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struct passwd *pw;
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u_int ulen;
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int allowed;
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char *p, *user, *style = NULL;
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/* Get the name of the user that we wish to log in as. */
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@ -388,26 +382,17 @@ do_authentication(void)
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authctxt->style = style;
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/* Verify that the user is a valid user. */
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if (!use_privsep) {
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pwent = getpwnam(user);
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allowed = pwent ? allowed_user(pwent) : 0;
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} else
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pwent = mm_getpwnamallow(mm_recvfd, user, &allowed);
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if (pwent && allowed) {
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pw = getpwnam(user);
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if (pw && allowed_user(pw)) {
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authctxt->valid = 1;
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pw = pwcopy(pwent);
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pw = pwcopy(pw);
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} else {
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debug("do_authentication: illegal user %s", user);
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pw = NULL;
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}
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/* Free memory */
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if (use_privsep)
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pwfree(pwent);
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authctxt->pw = pw;
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setproctitle("%s%s", use_privsep ? " [net]" : "",
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pw ? user : "unknown");
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setproctitle("%s", pw ? user : "unknown");
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#ifdef USE_PAM
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start_pam(pw == NULL ? "NOUSER" : user);
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@ -433,5 +418,6 @@ do_authentication(void)
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packet_send();
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packet_write_wait();
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return (authctxt);
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/* Perform session preparation. */
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do_authenticated(authctxt);
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}
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119
auth2.c
119
auth2.c
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@ -51,13 +51,8 @@ RCSID("$OpenBSD: auth2.c,v 1.85 2002/02/24 19:14:59 markus Exp $");
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#include "hostfile.h"
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#include "canohost.h"
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#include "match.h"
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#include "monitor.h"
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#include "monitor_wrap.h"
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/* import */
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extern int use_privsep;
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extern int mm_recvfd;
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extern ServerOptions options;
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extern u_char *session_id2;
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extern int session_id2_len;
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@ -80,8 +75,8 @@ static void input_userauth_request(int, u_int32_t, void *);
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/* helper */
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static Authmethod *authmethod_lookup(const char *);
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static char *authmethods_get(void);
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int user_key_allowed(struct passwd *, Key *);
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int hostbased_key_allowed(struct passwd *, const char *, char *, Key *);
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static int user_key_allowed(struct passwd *, Key *);
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static int hostbased_key_allowed(struct passwd *, const char *, char *, Key *);
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/* auth */
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static void userauth_banner(void);
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@ -114,7 +109,7 @@ Authmethod authmethods[] = {
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* loop until authctxt->success == TRUE
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*/
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Authctxt *
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void
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do_authentication2(void)
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{
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Authctxt *authctxt = authctxt_new();
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@ -130,8 +125,7 @@ do_authentication2(void)
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dispatch_init(&dispatch_protocol_error);
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dispatch_set(SSH2_MSG_SERVICE_REQUEST, &input_service_request);
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dispatch_run(DISPATCH_BLOCK, &authctxt->success, authctxt);
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return(authctxt);
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do_authenticated(authctxt);
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}
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static void
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@ -188,15 +182,10 @@ input_userauth_request(int type, u_int32_t seq, void *ctxt)
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*style++ = 0;
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if (authctxt->attempt++ == 0) {
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/* setup auth context */
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int allowed;
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/* setup auth context */
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struct passwd *pw = NULL;
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if (!use_privsep) {
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pw = getpwnam(user);
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allowed = pw ? allowed_user(pw) : 0;
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} else
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pw = mm_getpwnamallow(mm_recvfd, user, &allowed);
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if (pw && allowed && strcmp(service, "ssh-connection")==0) {
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pw = getpwnam(user);
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if (pw && allowed_user(pw) && strcmp(service, "ssh-connection")==0) {
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authctxt->pw = pwcopy(pw);
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authctxt->valid = 1;
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debug2("input_userauth_request: setting up authctxt for %s", user);
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@ -209,18 +198,10 @@ input_userauth_request(int type, u_int32_t seq, void *ctxt)
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start_pam("NOUSER");
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#endif
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}
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/* Free memory */
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if (use_privsep)
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pwfree(pw);
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setproctitle("%s%s", use_privsep ? " [net]" : "",
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pw ? user : "unknown");
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setproctitle("%s", pw ? user : "unknown");
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authctxt->user = xstrdup(user);
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authctxt->service = xstrdup(service);
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authctxt->style = style ? xstrdup(style) : NULL;
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if (use_privsep)
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mm_inform_authserv(mm_recvfd, service, style);
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} else if (strcmp(user, authctxt->user) != 0 ||
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strcmp(service, authctxt->service) != 0) {
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packet_disconnect("Change of username or service not allowed: "
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@ -332,8 +313,6 @@ done:
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static int
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userauth_none(Authctxt *authctxt)
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{
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int res = 0;
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/* disable method "none", only allowed one time */
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Authmethod *m = authmethod_lookup("none");
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if (m != NULL)
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@ -343,16 +322,18 @@ userauth_none(Authctxt *authctxt)
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if (authctxt->valid == 0)
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return(0);
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if (!authctxt->valid)
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return (0);
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if (use_privsep)
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#if defined(USE_PAM) || defined(HAVE_OSF_SIA)
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#error NOT IMPLEMENTED FOR PRIVSEP
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#ifdef HAVE_CYGWIN
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if (check_nt_auth(1, authctxt->pw) == 0)
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return(0);
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#endif
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res = mm_auth_password(mm_recvfd, "");
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else
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res = auth_password(authctxt, "");
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return (res);
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#ifdef USE_PAM
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return auth_pam_password(authctxt->pw, "");
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#elif defined(HAVE_OSF_SIA)
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return 0;
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#else /* !HAVE_OSF_SIA && !USE_PAM */
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return auth_password(authctxt, "");
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#endif /* USE_PAM */
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}
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static int
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@ -367,16 +348,18 @@ userauth_passwd(Authctxt *authctxt)
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log("password change not supported");
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password = packet_get_string(&len);
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packet_check_eom();
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#if defined(HAVE_CYGWIN) || defined(USE_PAM) || defined(HAVE_OSF_SIA)
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#error NOT IMPLEMENTED FOR PRIVSEP
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if (authctxt->valid &&
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#ifdef HAVE_CYGWIN
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check_nt_auth(1, authctxt->pw) &&
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#endif
|
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if (authctxt->valid) {
|
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if (use_privsep)
|
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authenticated = mm_auth_password(mm_recvfd, password);
|
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else
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authenticated = auth_password(authctxt, password);
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}
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#ifdef USE_PAM
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auth_pam_password(authctxt->pw, password) == 1)
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#elif defined(HAVE_OSF_SIA)
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auth_sia_password(authctxt->user, password) == 1)
|
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#else /* !USE_PAM && !HAVE_OSF_SIA */
|
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auth_password(authctxt, password) == 1)
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#endif /* USE_PAM */
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authenticated = 1;
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memset(password, 0, len);
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xfree(password);
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return authenticated;
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@ -484,23 +467,12 @@ userauth_pubkey(Authctxt *authctxt)
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buffer_dump(&b);
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#endif
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/* test for correct signature */
|
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authenticated = 0;
|
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if (use_privsep) {
|
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if (mm_user_key_allowed(mm_recvfd, key) &&
|
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mm_key_verify(mm_recvfd,
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MM_USERKEY, NULL, NULL, key, sig, slen,
|
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buffer_ptr(&b), buffer_len(&b)) == 1)
|
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authenticated = 1;
|
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} else {
|
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if (user_key_allowed(authctxt->pw, key) &&
|
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key_verify(key, sig, slen, buffer_ptr(&b),
|
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buffer_len(&b)) == 1)
|
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authenticated = 1;
|
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}
|
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if (user_key_allowed(authctxt->pw, key) &&
|
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key_verify(key, sig, slen, buffer_ptr(&b), buffer_len(&b)) == 1)
|
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authenticated = 1;
|
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buffer_clear(&b);
|
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xfree(sig);
|
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} else {
|
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int res = 0;
|
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debug("test whether pkalg/pkblob are acceptable");
|
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packet_check_eom();
|
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|
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|
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@ -512,11 +484,7 @@ userauth_pubkey(Authctxt *authctxt)
|
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* if a user is not allowed to login. is this an
|
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* issue? -markus
|
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*/
|
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if (use_privsep)
|
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res = mm_user_key_allowed(mm_recvfd, key);
|
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else
|
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res = user_key_allowed(authctxt->pw, key);
|
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if (res) {
|
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if (user_key_allowed(authctxt->pw, key)) {
|
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packet_start(SSH2_MSG_USERAUTH_PK_OK);
|
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packet_put_string(pkalg, alen);
|
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packet_put_string(pkblob, blen);
|
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|
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@ -604,18 +572,9 @@ userauth_hostbased(Authctxt *authctxt)
|
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buffer_dump(&b);
|
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#endif
|
||||
/* test for allowed key and correct signature */
|
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authenticated = 0;
|
||||
if (use_privsep) {
|
||||
if (mm_hostbased_key_allowed(mm_recvfd, cuser, chost, key) &&
|
||||
mm_key_verify(mm_recvfd, MM_HOSTKEY, cuser, chost, key,
|
||||
sig, slen, buffer_ptr(&b), buffer_len(&b)) == 1)
|
||||
authenticated = 1;
|
||||
} else {
|
||||
if (hostbased_key_allowed(authctxt->pw, cuser, chost, key) &&
|
||||
key_verify(key, sig, slen, buffer_ptr(&b),
|
||||
buffer_len(&b)) == 1)
|
||||
authenticated = 1;
|
||||
}
|
||||
if (hostbased_key_allowed(authctxt->pw, cuser, chost, key) &&
|
||||
key_verify(key, sig, slen, buffer_ptr(&b), buffer_len(&b)) == 1)
|
||||
authenticated = 1;
|
||||
|
||||
buffer_clear(&b);
|
||||
done:
|
||||
|
|
@ -771,7 +730,7 @@ user_key_allowed2(struct passwd *pw, Key *key, char *file)
|
|||
}
|
||||
|
||||
/* check whether given key is in .ssh/authorized_keys* */
|
||||
int
|
||||
static int
|
||||
user_key_allowed(struct passwd *pw, Key *key)
|
||||
{
|
||||
int success;
|
||||
|
|
@ -791,7 +750,7 @@ user_key_allowed(struct passwd *pw, Key *key)
|
|||
}
|
||||
|
||||
/* return 1 if given hostkey is allowed */
|
||||
int
|
||||
static int
|
||||
hostbased_key_allowed(struct passwd *pw, const char *cuser, char *chost,
|
||||
Key *key)
|
||||
{
|
||||
|
|
|
|||
2
bufaux.c
2
bufaux.c
|
|
@ -221,8 +221,6 @@ buffer_put_string(Buffer *buffer, const void *buf, u_int len)
|
|||
void
|
||||
buffer_put_cstring(Buffer *buffer, const char *s)
|
||||
{
|
||||
if (s == NULL)
|
||||
fatal("buffer_put_cstring: s == NULL");
|
||||
buffer_put_string(buffer, s, strlen(s));
|
||||
}
|
||||
|
||||
|
|
|
|||
40
cipher.c
40
cipher.c
|
|
@ -541,43 +541,3 @@ evp_rijndael(void)
|
|||
#endif
|
||||
return (&rijndal_cbc);
|
||||
}
|
||||
|
||||
/*
|
||||
* Exports an IV from the CipherContext required to export the key
|
||||
* state back from the unprivileged child to the privileged parent
|
||||
* process.
|
||||
*/
|
||||
|
||||
void
|
||||
cipher_get_keyiv(CipherContext *cc, u_char *iv, u_int len)
|
||||
{
|
||||
Cipher *c = cc->cipher;
|
||||
u_char *civ = NULL;
|
||||
int evplen;
|
||||
|
||||
switch (c->number) {
|
||||
case SSH_CIPHER_SSH2:
|
||||
evplen = EVP_CIPHER_CTX_iv_length(&cc->evp);
|
||||
if (evplen == 0)
|
||||
return;
|
||||
if (evplen != len)
|
||||
fatal("%s: wrong iv length %d != %d", __FUNCTION__,
|
||||
evplen, len);
|
||||
|
||||
if (strncmp(c->name, "aes", 3) == 0) {
|
||||
struct ssh_rijndael_ctx *aesc;
|
||||
|
||||
aesc = EVP_CIPHER_CTX_get_app_data(&cc->evp);
|
||||
if (aesc == NULL)
|
||||
fatal("ssh_rijndael_cbc: no context");
|
||||
civ = aesc->r_iv;
|
||||
} else {
|
||||
civ = cc->evp.iv;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
fatal("%s: bad cipher %d", __FUNCTION__, c->number);
|
||||
}
|
||||
memcpy(iv, civ, len);
|
||||
}
|
||||
|
||||
|
|
|
|||
2
cipher.h
2
cipher.h
|
|
@ -81,6 +81,4 @@ void cipher_cleanup(CipherContext *);
|
|||
void cipher_set_key_string(CipherContext *, Cipher *, const char *, int);
|
||||
u_int cipher_blocksize(Cipher *);
|
||||
u_int cipher_keylen(Cipher *);
|
||||
|
||||
void cipher_get_keyiv(CipherContext *, u_char *, u_int);
|
||||
#endif /* CIPHER_H */
|
||||
|
|
|
|||
|
|
@ -19,8 +19,8 @@ RCSID("$OpenBSD: compress.c,v 1.17 2001/12/29 21:56:01 stevesk Exp $");
|
|||
#include "zlib.h"
|
||||
#include "compress.h"
|
||||
|
||||
z_stream incoming_stream;
|
||||
z_stream outgoing_stream;
|
||||
static z_stream incoming_stream;
|
||||
static z_stream outgoing_stream;
|
||||
static int compress_init_send_called = 0;
|
||||
static int compress_init_recv_called = 0;
|
||||
|
||||
|
|
|
|||
4
kex.c
4
kex.c
|
|
@ -43,10 +43,6 @@ RCSID("$OpenBSD: kex.c,v 1.47 2002/02/28 15:46:33 markus Exp $");
|
|||
|
||||
#define KEX_COOKIE_LEN 16
|
||||
|
||||
/* Use privilege separation for sshd */
|
||||
int use_privsep;
|
||||
int mm_recvfd;
|
||||
|
||||
/* prototype */
|
||||
static void kex_kexinit_finish(Kex *);
|
||||
static void kex_choose_conf(Kex *);
|
||||
|
|
|
|||
1
kex.h
1
kex.h
|
|
@ -111,7 +111,6 @@ struct Kex {
|
|||
char *server_version_string;
|
||||
int (*verify_host_key)(Key *);
|
||||
Key *(*load_host_key)(int);
|
||||
int (*host_key_index)(Key *);
|
||||
};
|
||||
|
||||
Kex *kex_setup(char *[PROPOSAL_MAX]);
|
||||
|
|
|
|||
13
kexdh.c
13
kexdh.c
|
|
@ -37,12 +37,6 @@ RCSID("$OpenBSD: kexdh.c,v 1.17 2002/02/28 15:46:33 markus Exp $");
|
|||
#include "packet.h"
|
||||
#include "dh.h"
|
||||
#include "ssh2.h"
|
||||
#include "monitor.h"
|
||||
#include "monitor_wrap.h"
|
||||
|
||||
/* Imports */
|
||||
extern int use_privsep;
|
||||
extern int mm_recvfd;
|
||||
|
||||
static u_char *
|
||||
kex_dh_hash(
|
||||
|
|
@ -281,12 +275,7 @@ kexdh_server(Kex *kex)
|
|||
|
||||
/* sign H */
|
||||
/* XXX hashlen depends on KEX */
|
||||
if (use_privsep)
|
||||
mm_key_sign(mm_recvfd,
|
||||
kex->host_key_index(server_host_key),
|
||||
&signature, &slen, hash, 20);
|
||||
else
|
||||
key_sign(server_host_key, &signature, &slen, hash, 20);
|
||||
key_sign(server_host_key, &signature, &slen, hash, 20);
|
||||
|
||||
/* destroy_sensitive_data(); */
|
||||
|
||||
|
|
|
|||
19
kexgex.c
19
kexgex.c
|
|
@ -38,12 +38,6 @@ RCSID("$OpenBSD: kexgex.c,v 1.20 2002/02/28 15:46:33 markus Exp $");
|
|||
#include "dh.h"
|
||||
#include "ssh2.h"
|
||||
#include "compat.h"
|
||||
#include "monitor.h"
|
||||
#include "monitor_wrap.h"
|
||||
|
||||
/* Imports */
|
||||
extern int use_privsep;
|
||||
extern int mm_recvfd;
|
||||
|
||||
static u_char *
|
||||
kexgex_hash(
|
||||
|
|
@ -302,11 +296,7 @@ kexgex_server(Kex *kex)
|
|||
fatal("DH_GEX_REQUEST, bad parameters: %d !< %d !< %d",
|
||||
min, nbits, max);
|
||||
|
||||
/* Contact privileged parent */
|
||||
if (use_privsep)
|
||||
dh = mm_choose_dh(mm_recvfd, min, nbits, max);
|
||||
else
|
||||
dh = choose_dh(min, nbits, max);
|
||||
dh = choose_dh(min, nbits, max);
|
||||
if (dh == NULL)
|
||||
packet_disconnect("Protocol error: no matching DH grp found");
|
||||
|
||||
|
|
@ -389,11 +379,7 @@ kexgex_server(Kex *kex)
|
|||
|
||||
/* sign H */
|
||||
/* XXX hashlen depends on KEX */
|
||||
if (use_privsep)
|
||||
mm_key_sign(mm_recvfd, kex->host_key_index(server_host_key),
|
||||
&signature, &slen, hash, 20);
|
||||
else
|
||||
key_sign(server_host_key, &signature, &slen, hash, 20);
|
||||
key_sign(server_host_key, &signature, &slen, hash, 20);
|
||||
|
||||
/* destroy_sensitive_data(); */
|
||||
|
||||
|
|
@ -404,7 +390,6 @@ kexgex_server(Kex *kex)
|
|||
packet_put_bignum2(dh->pub_key); /* f */
|
||||
packet_put_string(signature, slen);
|
||||
packet_send();
|
||||
|
||||
xfree(signature);
|
||||
xfree(server_host_key_blob);
|
||||
/* have keys, free DH */
|
||||
|
|
|
|||
43
key.c
43
key.c
|
|
@ -801,46 +801,3 @@ key_verify(
|
|||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Converts a private to a public key */
|
||||
|
||||
Key *
|
||||
key_demote(Key *k)
|
||||
{
|
||||
Key *pk;
|
||||
|
||||
pk = xmalloc(sizeof(*pk));
|
||||
pk->type = k->type;
|
||||
pk->flags = k->flags;
|
||||
pk->dsa = NULL;
|
||||
pk->rsa = NULL;
|
||||
|
||||
switch (k->type) {
|
||||
case KEY_RSA1:
|
||||
case KEY_RSA:
|
||||
if ((pk->rsa = RSA_new()) == NULL)
|
||||
fatal("key_demote: RSA_new failed");
|
||||
if ((pk->rsa->e = BN_dup(k->rsa->e)) == NULL)
|
||||
fatal("key_demote: BN_dup failed");
|
||||
if ((pk->rsa->n = BN_dup(k->rsa->n)) == NULL)
|
||||
fatal("key_demote: BN_dup failed");
|
||||
break;
|
||||
case KEY_DSA:
|
||||
if ((pk->dsa = DSA_new()) == NULL)
|
||||
fatal("key_demote: DSA_new failed");
|
||||
if ((pk->dsa->p = BN_dup(k->dsa->p)) == NULL)
|
||||
fatal("key_demote: BN_dup failed");
|
||||
if ((pk->dsa->q = BN_dup(k->dsa->q)) == NULL)
|
||||
fatal("key_demote: BN_dup failed");
|
||||
if ((pk->dsa->g = BN_dup(k->dsa->g)) == NULL)
|
||||
fatal("key_demote: BN_dup failed");
|
||||
if ((pk->dsa->pub_key = BN_dup(k->dsa->pub_key)) == NULL)
|
||||
fatal("key_demote: BN_dup failed");
|
||||
break;
|
||||
default:
|
||||
fatal("key_free: bad key type %d", k->type);
|
||||
break;
|
||||
}
|
||||
|
||||
return (pk);
|
||||
}
|
||||
|
|
|
|||
1
key.h
1
key.h
|
|
@ -58,7 +58,6 @@ struct Key {
|
|||
Key *key_new(int);
|
||||
Key *key_new_private(int);
|
||||
void key_free(Key *);
|
||||
Key *key_demote(Key *);
|
||||
int key_equal(Key *, Key *);
|
||||
char *key_fingerprint(Key *, enum fp_type, enum fp_rep);
|
||||
char *key_type(Key *);
|
||||
|
|
|
|||
106
packet.c
106
packet.c
|
|
@ -115,8 +115,6 @@ static int interactive_mode = 0;
|
|||
|
||||
/* Session key information for Encryption and MAC */
|
||||
Newkeys *newkeys[MODE_MAX];
|
||||
static u_int32_t read_seqnr = 0;
|
||||
static u_int32_t send_seqnr = 0;
|
||||
|
||||
/* roundup current message to extra_pad bytes */
|
||||
static u_char extra_pad = 0;
|
||||
|
|
@ -173,87 +171,6 @@ packet_connection_is_on_socket(void)
|
|||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Exports an IV from the CipherContext required to export the key
|
||||
* state back from the unprivileged child to the privileged parent
|
||||
* process.
|
||||
*/
|
||||
|
||||
void
|
||||
packet_get_keyiv(int mode, u_char *iv, u_int len)
|
||||
{
|
||||
CipherContext *cc;
|
||||
|
||||
if (mode == MODE_OUT)
|
||||
cc = &send_context;
|
||||
else
|
||||
cc = &receive_context;
|
||||
|
||||
cipher_get_keyiv(cc, iv, len);
|
||||
}
|
||||
|
||||
int
|
||||
packet_get_keycontext(int mode, u_char *dat)
|
||||
{
|
||||
int plen;
|
||||
CipherContext *cc;
|
||||
|
||||
if (mode == MODE_OUT)
|
||||
cc = &send_context;
|
||||
else
|
||||
cc = &receive_context;
|
||||
|
||||
#if OPENSSL_VERSION_NUMBER < 0x00907000L
|
||||
plen = sizeof(cc->evp.c);
|
||||
#else
|
||||
plen = cc->evp.cipher->ctx_size;
|
||||
#endif
|
||||
|
||||
if (dat == NULL)
|
||||
return (plen);
|
||||
|
||||
#if OPENSSL_VERSION_NUMBER < 0x00907000L
|
||||
memcpy(dat, &cc->evp.c, sizeof(cc->evp.c));
|
||||
#else
|
||||
memcpy(dat, &cc->evp.cipher_data, plen);
|
||||
#endif
|
||||
return (plen);
|
||||
}
|
||||
|
||||
void
|
||||
packet_set_keycontext(int mode, u_char *dat)
|
||||
{
|
||||
CipherContext *cc;
|
||||
|
||||
if (mode == MODE_OUT)
|
||||
cc = &send_context;
|
||||
else
|
||||
cc = &receive_context;
|
||||
|
||||
#if OPENSSL_VERSION_NUMBER < 0x00907000L
|
||||
memcpy(&cc->evp.c, dat, sizeof(cc->evp.c));
|
||||
#else
|
||||
memcpy(&cc->evp.cipher_data, dat, cc->evp.cipher->ctx_size);
|
||||
#endif
|
||||
}
|
||||
|
||||
u_int32_t
|
||||
packet_get_seqnr(int mode)
|
||||
{
|
||||
return (mode == MODE_IN ? read_seqnr : send_seqnr);
|
||||
}
|
||||
|
||||
void
|
||||
packet_set_seqnr(int mode, u_int32_t seqnr)
|
||||
{
|
||||
if (mode == MODE_IN)
|
||||
read_seqnr = seqnr;
|
||||
else if (mode == MODE_OUT)
|
||||
send_seqnr = seqnr;
|
||||
else
|
||||
fatal("%s: bad mode %d", __FUNCTION__, mode);
|
||||
}
|
||||
|
||||
/* returns 1 if connection is via ipv4 */
|
||||
|
||||
int
|
||||
|
|
@ -516,7 +433,7 @@ packet_send1(void)
|
|||
*/
|
||||
}
|
||||
|
||||
void
|
||||
static void
|
||||
set_newkeys(int mode)
|
||||
{
|
||||
Enc *enc;
|
||||
|
|
@ -560,9 +477,8 @@ set_newkeys(int mode)
|
|||
DBG(debug("cipher_init_context: %d", mode));
|
||||
cipher_init(cc, enc->cipher, enc->key, enc->key_len,
|
||||
enc->iv, enc->block_size, encrypt);
|
||||
/* Deleting the keys does not gain extra security */
|
||||
/* memset(enc->iv, 0, enc->block_size);
|
||||
memset(enc->key, 0, enc->key_len); */
|
||||
memset(enc->iv, 0, enc->block_size);
|
||||
memset(enc->key, 0, enc->key_len);
|
||||
if (comp->type != 0 && comp->enabled == 0) {
|
||||
packet_init_compression();
|
||||
if (mode == MODE_OUT)
|
||||
|
|
@ -579,6 +495,7 @@ set_newkeys(int mode)
|
|||
static void
|
||||
packet_send2(void)
|
||||
{
|
||||
static u_int32_t seqnr = 0;
|
||||
u_char type, *cp, *macbuf = NULL;
|
||||
u_char padlen, pad;
|
||||
u_int packet_length = 0;
|
||||
|
|
@ -659,10 +576,10 @@ packet_send2(void)
|
|||
|
||||
/* compute MAC over seqnr and packet(length fields, payload, padding) */
|
||||
if (mac && mac->enabled) {
|
||||
macbuf = mac_compute(mac, send_seqnr,
|
||||
macbuf = mac_compute(mac, seqnr,
|
||||
buffer_ptr(&outgoing_packet),
|
||||
buffer_len(&outgoing_packet));
|
||||
DBG(debug("done calc MAC out #%d", send_seqnr));
|
||||
DBG(debug("done calc MAC out #%d", seqnr));
|
||||
}
|
||||
/* encrypt packet and append to output buffer. */
|
||||
cp = buffer_append_space(&output, buffer_len(&outgoing_packet));
|
||||
|
|
@ -676,7 +593,7 @@ packet_send2(void)
|
|||
buffer_dump(&output);
|
||||
#endif
|
||||
/* increment sequence number for outgoing packets */
|
||||
if (++send_seqnr == 0)
|
||||
if (++seqnr == 0)
|
||||
log("outgoing seqnr wraps around");
|
||||
buffer_clear(&outgoing_packet);
|
||||
|
||||
|
|
@ -866,6 +783,7 @@ packet_read_poll1(void)
|
|||
static int
|
||||
packet_read_poll2(u_int32_t *seqnr_p)
|
||||
{
|
||||
static u_int32_t seqnr = 0;
|
||||
static u_int packet_length = 0;
|
||||
u_int padlen, need;
|
||||
u_char *macbuf, *cp, type;
|
||||
|
|
@ -927,17 +845,17 @@ packet_read_poll2(u_int32_t *seqnr_p)
|
|||
* increment sequence number for incoming packet
|
||||
*/
|
||||
if (mac && mac->enabled) {
|
||||
macbuf = mac_compute(mac, read_seqnr,
|
||||
macbuf = mac_compute(mac, seqnr,
|
||||
buffer_ptr(&incoming_packet),
|
||||
buffer_len(&incoming_packet));
|
||||
if (memcmp(macbuf, buffer_ptr(&input), mac->mac_len) != 0)
|
||||
packet_disconnect("Corrupted MAC on input.");
|
||||
DBG(debug("MAC #%d ok", read_seqnr));
|
||||
DBG(debug("MAC #%d ok", seqnr));
|
||||
buffer_consume(&input, mac->mac_len);
|
||||
}
|
||||
if (seqnr_p != NULL)
|
||||
*seqnr_p = read_seqnr;
|
||||
if (++read_seqnr == 0)
|
||||
*seqnr_p = seqnr;
|
||||
if (++seqnr == 0)
|
||||
log("incoming seqnr wraps around");
|
||||
|
||||
/* get padlen */
|
||||
|
|
|
|||
7
packet.h
7
packet.h
|
|
@ -56,13 +56,6 @@ void *packet_get_string(u_int *length_ptr);
|
|||
void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
|
||||
void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
|
||||
|
||||
void set_newkeys(int mode);
|
||||
void packet_get_keyiv(int, u_char *, u_int);
|
||||
int packet_get_keycontext(int, u_char *);
|
||||
void packet_set_keycontext(int, u_char *);
|
||||
u_int32_t packet_get_seqnr(int);
|
||||
void packet_set_seqnr(int, u_int32_t);
|
||||
|
||||
void packet_write_poll(void);
|
||||
void packet_write_wait(void);
|
||||
int packet_have_data_to_write(void);
|
||||
|
|
|
|||
15
servconf.c
15
servconf.c
|
|
@ -36,8 +36,6 @@ static void add_one_listen_addr(ServerOptions *, char *, u_short);
|
|||
|
||||
/* AF_UNSPEC or AF_INET or AF_INET6 */
|
||||
extern int IPv4or6;
|
||||
/* Use of privilege separation or not */
|
||||
extern int use_privsep;
|
||||
|
||||
/* Initializes the server options to their default values. */
|
||||
|
||||
|
|
@ -112,9 +110,6 @@ initialize_server_options(ServerOptions *options)
|
|||
options->client_alive_count_max = -1;
|
||||
options->authorized_keys_file = NULL;
|
||||
options->authorized_keys_file2 = NULL;
|
||||
|
||||
/* Needs to be accessable in many places */
|
||||
use_privsep = -1;
|
||||
}
|
||||
|
||||
void
|
||||
|
|
@ -240,10 +235,6 @@ fill_default_server_options(ServerOptions *options)
|
|||
}
|
||||
if (options->authorized_keys_file == NULL)
|
||||
options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS;
|
||||
|
||||
/* Turn privilege separation on by default */
|
||||
if (use_privsep == -1)
|
||||
use_privsep = 1;
|
||||
}
|
||||
|
||||
/* Keyword tokens. */
|
||||
|
|
@ -276,7 +267,6 @@ typedef enum {
|
|||
sBanner, sVerifyReverseMapping, sHostbasedAuthentication,
|
||||
sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
|
||||
sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2,
|
||||
sUsePrivilegeSeparation,
|
||||
sDeprecated
|
||||
} ServerOpCodes;
|
||||
|
||||
|
|
@ -352,7 +342,6 @@ static struct {
|
|||
{ "clientalivecountmax", sClientAliveCountMax },
|
||||
{ "authorizedkeysfile", sAuthorizedKeysFile },
|
||||
{ "authorizedkeysfile2", sAuthorizedKeysFile2 },
|
||||
{ "useprivilegeseparation", sUsePrivilegeSeparation},
|
||||
{ NULL, sBadOption }
|
||||
};
|
||||
|
||||
|
|
@ -729,10 +718,6 @@ parse_flag:
|
|||
intptr = &options->allow_tcp_forwarding;
|
||||
goto parse_flag;
|
||||
|
||||
case sUsePrivilegeSeparation:
|
||||
intptr = &use_privsep;
|
||||
goto parse_flag;
|
||||
|
||||
case sAllowUsers:
|
||||
while ((arg = strdelim(&cp)) && *arg != '\0') {
|
||||
if (options->num_allow_users >= MAX_ALLOW_USERS)
|
||||
|
|
|
|||
53
session.c
53
session.c
|
|
@ -56,8 +56,6 @@ RCSID("$OpenBSD: session.c,v 1.128 2002/02/16 00:51:44 markus Exp $");
|
|||
#include "serverloop.h"
|
||||
#include "canohost.h"
|
||||
#include "session.h"
|
||||
#include "monitor.h"
|
||||
#include "monitor_wrap.h"
|
||||
|
||||
#ifdef HAVE_CYGWIN
|
||||
#include <windows.h>
|
||||
|
|
@ -65,15 +63,39 @@ RCSID("$OpenBSD: session.c,v 1.128 2002/02/16 00:51:44 markus Exp $");
|
|||
#define is_winnt (GetVersion() < 0x80000000)
|
||||
#endif
|
||||
|
||||
/* Imports */
|
||||
extern int use_privsep;
|
||||
extern int mm_recvfd;
|
||||
/* 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);
|
||||
void session_pty_cleanup(void *);
|
||||
static void session_pty_cleanup(void *);
|
||||
void session_proctitle(Session *);
|
||||
int session_setup_x11fwd(Session *);
|
||||
void do_exec_pty(Session *, const char *);
|
||||
|
|
@ -90,6 +112,7 @@ int check_quietlogin(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 */
|
||||
|
|
@ -1425,8 +1448,7 @@ session_pty_req(Session *s)
|
|||
{
|
||||
u_int len;
|
||||
int n_bytes;
|
||||
int res;
|
||||
|
||||
|
||||
if (no_pty_flag) {
|
||||
debug("Allocating a pty not permitted for this authentication.");
|
||||
return 0;
|
||||
|
|
@ -1455,15 +1477,7 @@ session_pty_req(Session *s)
|
|||
|
||||
/* Allocate a pty and open it. */
|
||||
debug("Allocating pty.");
|
||||
if (!use_privsep) {
|
||||
res = pty_allocate(&s->ptyfd, &s->ttyfd, s->tty,
|
||||
sizeof(s->tty));
|
||||
if (res)
|
||||
pty_setowner(s->pw, s->tty);
|
||||
} else
|
||||
res = mm_pty_allocown(mm_recvfd,
|
||||
&s->ptyfd, &s->ttyfd, s->tty, sizeof(s->tty));
|
||||
if (!res) {
|
||||
if (!pty_allocate(&s->ptyfd, &s->ttyfd, s->tty, sizeof(s->tty))) {
|
||||
if (s->term)
|
||||
xfree(s->term);
|
||||
s->term = NULL;
|
||||
|
|
@ -1484,6 +1498,7 @@ session_pty_req(Session *s)
|
|||
* 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);
|
||||
|
||||
/* Set window size from the packet. */
|
||||
pty_change_window_size(s->ptyfd, s->row, s->col, s->xpixel, s->ypixel);
|
||||
|
|
@ -1646,7 +1661,7 @@ session_set_fds(Session *s, int fdin, int fdout, int fderr)
|
|||
* Function to perform pty cleanup. Also called if we get aborted abnormally
|
||||
* (e.g., due to a dropped connection).
|
||||
*/
|
||||
void
|
||||
static void
|
||||
session_pty_cleanup(void *session)
|
||||
{
|
||||
Session *s = session;
|
||||
|
|
@ -1724,7 +1739,7 @@ session_exit_message(Session *s, int status)
|
|||
s->chanid = -1;
|
||||
}
|
||||
|
||||
void
|
||||
static void
|
||||
session_close(Session *s)
|
||||
{
|
||||
debug("session_close: session %d pid %d", s->self, s->pid);
|
||||
|
|
|
|||
28
session.h
28
session.h
|
|
@ -26,32 +26,6 @@
|
|||
#ifndef SESSION_H
|
||||
#define SESSION_H
|
||||
|
||||
#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;
|
||||
};
|
||||
|
||||
void do_authenticated(Authctxt *);
|
||||
|
||||
int session_open(Authctxt*, int);
|
||||
|
|
@ -60,6 +34,4 @@ void session_close_by_pid(pid_t, int);
|
|||
void session_close_by_channel(int, void *);
|
||||
void session_destroy_all(void);
|
||||
|
||||
Session *session_new(void);
|
||||
void session_close(Session *);
|
||||
#endif
|
||||
|
|
|
|||
173
sshd.c
173
sshd.c
|
|
@ -72,11 +72,6 @@ RCSID("$OpenBSD: sshd.c,v 1.228 2002/02/27 21:23:13 stevesk Exp $");
|
|||
#include "misc.h"
|
||||
#include "dispatch.h"
|
||||
#include "channels.h"
|
||||
#include "session.h"
|
||||
#include "monitor_mm.h"
|
||||
#include "monitor.h"
|
||||
#include "monitor_wrap.h"
|
||||
#include "monitor_fdpass.h"
|
||||
|
||||
#ifdef LIBWRAP
|
||||
#include <tcpd.h>
|
||||
|
|
@ -194,20 +189,8 @@ u_int utmp_len = MAXHOSTNAMELEN;
|
|||
int *startup_pipes = NULL;
|
||||
int startup_pipe; /* in child */
|
||||
|
||||
/* variables used for privilege separation */
|
||||
#define MM_MEMSIZE 65536
|
||||
struct mm_master *mm_zback;
|
||||
struct mm_master *mm_zlib;
|
||||
|
||||
extern int use_privsep;
|
||||
/* Socket for the child to receive a fd */
|
||||
extern int mm_recvfd;
|
||||
/* Socket for the parent to send a fd */
|
||||
int mm_sendfd;
|
||||
|
||||
/* Prototypes for various functions defined later in this file. */
|
||||
void destroy_sensitive_data(void);
|
||||
void demote_sensitive_data(void);
|
||||
|
||||
static void do_ssh1_kex(void);
|
||||
static void do_ssh2_kex(void);
|
||||
|
|
@ -494,69 +477,6 @@ destroy_sensitive_data(void)
|
|||
memset(sensitive_data.ssh1_cookie, 0, SSH_SESSION_KEY_LENGTH);
|
||||
}
|
||||
|
||||
/* Demote private to public keys for network child */
|
||||
void
|
||||
demote_sensitive_data(void)
|
||||
{
|
||||
Key *tmp;
|
||||
int i;
|
||||
|
||||
if (sensitive_data.server_key) {
|
||||
tmp = key_demote(sensitive_data.server_key);
|
||||
key_free(sensitive_data.server_key);
|
||||
sensitive_data.server_key = tmp;
|
||||
}
|
||||
for (i = 0; i < options.num_host_key_files; i++) {
|
||||
if (sensitive_data.host_keys[i]) {
|
||||
tmp = key_demote(sensitive_data.host_keys[i]);
|
||||
key_free(sensitive_data.host_keys[i]);
|
||||
sensitive_data.host_keys[i] = tmp;
|
||||
}
|
||||
}
|
||||
|
||||
/* We do not clear ssh1_host key and cookie. XXX - Okay Niels? */
|
||||
}
|
||||
|
||||
void
|
||||
privsep_postauth(Authctxt *authctxt)
|
||||
{
|
||||
pid_t pid;
|
||||
|
||||
if (0) {
|
||||
/* File descriptor passing is broken */
|
||||
mm_apply_keystate(mm_zlib);
|
||||
use_privsep = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
pid = fork();
|
||||
if (pid == -1)
|
||||
fatal("fork of unprivileged child failed");
|
||||
else if (pid != 0) {
|
||||
debug2("User child is on pid %d", pid);
|
||||
close(mm_recvfd);
|
||||
monitor_child_postauth(mm_sendfd);
|
||||
|
||||
/* Teardown? */
|
||||
exit(0);
|
||||
}
|
||||
|
||||
close(mm_sendfd);
|
||||
|
||||
/* Demote the private keys to public keys. */
|
||||
demote_sensitive_data();
|
||||
|
||||
/* Drop privileges */
|
||||
if (seteuid(authctxt->pw->pw_uid) == -1)
|
||||
fatal("%s: seteuid", __FUNCTION__);
|
||||
if (setuid(authctxt->pw->pw_uid) == -1)
|
||||
fatal("%s: setuid", __FUNCTION__);
|
||||
|
||||
/* It is safe now to apply the key state */
|
||||
mm_apply_keystate(mm_zlib);
|
||||
}
|
||||
|
||||
|
||||
static char *
|
||||
list_hostkey_types(void)
|
||||
{
|
||||
|
|
@ -598,25 +518,6 @@ get_hostkey_by_type(int type)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
Key *
|
||||
get_hostkey_by_index(int ind)
|
||||
{
|
||||
if (ind < 0 || ind >= options.num_host_key_files)
|
||||
return (NULL);
|
||||
return (sensitive_data.host_keys[ind]);
|
||||
}
|
||||
|
||||
int
|
||||
get_hostkey_index(Key *key)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < options.num_host_key_files; i++) {
|
||||
if (key == sensitive_data.host_keys[i])
|
||||
return (i);
|
||||
}
|
||||
return (-1);
|
||||
}
|
||||
|
||||
/*
|
||||
* returns 1 if connection should be dropped, 0 otherwise.
|
||||
* dropping starts at connection #max_startups_begin with a probability
|
||||
|
|
@ -693,8 +594,6 @@ main(int ac, char **av)
|
|||
int listen_sock, maxfd;
|
||||
int startup_p[2];
|
||||
int startups = 0;
|
||||
Authctxt *authctxt;
|
||||
int sp[2];
|
||||
Key *key;
|
||||
int ret, key_used = 0;
|
||||
|
||||
|
|
@ -1332,84 +1231,23 @@ main(int ac, char **av)
|
|||
|
||||
packet_set_nonblocking();
|
||||
|
||||
if (!use_privsep)
|
||||
goto skip_privilegeseparation;
|
||||
|
||||
/* Set up unprivileged child process to deal with network data */
|
||||
monitor_socketpair(sp);
|
||||
mm_recvfd = sp[0];
|
||||
mm_sendfd = sp[1];
|
||||
|
||||
/* Used to share zlib space across processes */
|
||||
mm_zback = mm_create(NULL, MM_MEMSIZE);
|
||||
mm_zlib = mm_create(mm_zback, 20 * MM_MEMSIZE);
|
||||
|
||||
/* Compression needs to share state across borders */
|
||||
mm_init_compression(mm_zlib);
|
||||
|
||||
pid = fork();
|
||||
if (pid == -1)
|
||||
fatal("fork of unprivileged child failed");
|
||||
else if (pid != 0) {
|
||||
debug2("Network child is on pid %d", pid);
|
||||
authctxt = monitor_child_preauth(mm_sendfd);
|
||||
|
||||
/* The member allocation is not visible, so sync it */
|
||||
mm_share_sync(&mm_zlib, &mm_zback);
|
||||
goto authenticated;
|
||||
} else {
|
||||
/* Demote the private keys to public keys. */
|
||||
demote_sensitive_data();
|
||||
|
||||
/* Change our root directory - /var/empty is standard*/
|
||||
if (chroot("/var/empty") == -1)
|
||||
fatal("chroot(/var/empty)");
|
||||
if (chdir("/") == -1)
|
||||
fatal("chdir(/)");
|
||||
|
||||
/* Drop our privileges */
|
||||
seteuid(32767); /* XXX - Niels */
|
||||
setuid(32767);
|
||||
}
|
||||
|
||||
skip_privilegeseparation:
|
||||
|
||||
/* perform the key exchange */
|
||||
/* authenticate user and start session */
|
||||
if (compat20) {
|
||||
do_ssh2_kex();
|
||||
authctxt = do_authentication2();
|
||||
if (use_privsep)
|
||||
mm_send_keystate(mm_recvfd);
|
||||
do_authentication2();
|
||||
} else {
|
||||
do_ssh1_kex();
|
||||
authctxt = do_authentication();
|
||||
do_authentication();
|
||||
}
|
||||
|
||||
/* If we use privilege separation, the unprivileged child exits */
|
||||
if (use_privsep)
|
||||
exit(0);
|
||||
|
||||
authenticated:
|
||||
/*
|
||||
* In privilege separation, we fork another child and prepare
|
||||
* file descriptor passing.
|
||||
*/
|
||||
if (use_privsep)
|
||||
privsep_postauth(authctxt);
|
||||
|
||||
/* Perform session preparation. */
|
||||
do_authenticated(authctxt);
|
||||
/* The connection has been terminated. */
|
||||
verbose("Closing connection to %.100s", remote_ip);
|
||||
|
||||
#ifdef USE_PAM
|
||||
finish_pam();
|
||||
#endif /* USE_PAM */
|
||||
|
||||
packet_close();
|
||||
|
||||
if (use_privsep)
|
||||
mm_terminate(mm_recvfd);
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
|
|
@ -1615,6 +1453,8 @@ do_ssh1_kex(void)
|
|||
for (i = 0; i < 16; i++)
|
||||
session_id[i] = session_key[i] ^ session_key[i + 16];
|
||||
}
|
||||
/* Destroy the private and public keys. They will no longer be needed. */
|
||||
destroy_sensitive_data();
|
||||
|
||||
/* Destroy the decrypted integer. It is no longer needed. */
|
||||
BN_clear_free(session_key_int);
|
||||
|
|
@ -1662,7 +1502,6 @@ do_ssh2_kex(void)
|
|||
kex->client_version_string=client_version_string;
|
||||
kex->server_version_string=server_version_string;
|
||||
kex->load_host_key=&get_hostkey_by_type;
|
||||
kex->host_key_index=&get_hostkey_index;
|
||||
|
||||
xxx_kex = kex;
|
||||
|
||||
|
|
|
|||
Загрузка…
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