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openssh-portable
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sync - don't know when this got out of sync

This commit is contained in:
Damien Miller 2002-02-13 16:56:44 +11:00
parent 6448ec6b1a
commit db95e4e107
1 changed files with 45 additions and 42 deletions
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87
auth-krb5.c
View File

@ -2,7 +2,7 @@
* Kerberos v5 authentication and ticket-passing routines. * Kerberos v5 authentication and ticket-passing routines.
* *
* $FreeBSD: src/crypto/openssh/auth-krb5.c,v 1.6 2001/02/13 16:58:04 assar Exp $ * $FreeBSD: src/crypto/openssh/auth-krb5.c,v 1.6 2001/02/13 16:58:04 assar Exp $
* $OpenBSD: auth-krb5.c,v 1.2 2001/11/12 01:47:09 dugsong Exp $ * $OpenBSD: auth-krb5.c,v 1.4 2002/01/27 15:12:09 markus Exp $
*/ */
#include "includes.h" #include "includes.h"
@ -26,7 +26,7 @@ krb5_init(void *context)
Authctxt *authctxt = (Authctxt *)context; Authctxt *authctxt = (Authctxt *)context;
krb5_error_code problem; krb5_error_code problem;
static int cleanup_registered = 0; static int cleanup_registered = 0;
if (authctxt->krb5_ctx == NULL) { if (authctxt->krb5_ctx == NULL) {
problem = krb5_init_context(&authctxt->krb5_ctx); problem = krb5_init_context(&authctxt->krb5_ctx);
if (problem) if (problem)
@ -45,7 +45,7 @@ krb5_init(void *context)
* only, in auth is received ticket, in client is returned principal * only, in auth is received ticket, in client is returned principal
* from the ticket * from the ticket
*/ */
int int
auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client) auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client)
{ {
krb5_error_code problem; krb5_error_code problem;
@ -58,52 +58,52 @@ auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client)
server = NULL; server = NULL;
ticket = NULL; ticket = NULL;
reply.length = 0; reply.length = 0;
problem = krb5_init(authctxt); problem = krb5_init(authctxt);
if (problem) if (problem)
goto err; goto err;
problem = krb5_auth_con_init(authctxt->krb5_ctx, problem = krb5_auth_con_init(authctxt->krb5_ctx,
&authctxt->krb5_auth_ctx); &authctxt->krb5_auth_ctx);
if (problem) if (problem)
goto err; goto err;
fd = packet_get_connection_in(); fd = packet_get_connection_in();
problem = krb5_auth_con_setaddrs_from_fd(authctxt->krb5_ctx, problem = krb5_auth_con_setaddrs_from_fd(authctxt->krb5_ctx,
authctxt->krb5_auth_ctx, &fd); authctxt->krb5_auth_ctx, &fd);
if (problem) if (problem)
goto err; goto err;
problem = krb5_sname_to_principal(authctxt->krb5_ctx, NULL, NULL , problem = krb5_sname_to_principal(authctxt->krb5_ctx, NULL, NULL ,
KRB5_NT_SRV_HST, &server); KRB5_NT_SRV_HST, &server);
if (problem) if (problem)
goto err; goto err;
problem = krb5_rd_req(authctxt->krb5_ctx, &authctxt->krb5_auth_ctx, problem = krb5_rd_req(authctxt->krb5_ctx, &authctxt->krb5_auth_ctx,
auth, server, NULL, NULL, &ticket); auth, server, NULL, NULL, &ticket);
if (problem) if (problem)
goto err; goto err;
problem = krb5_copy_principal(authctxt->krb5_ctx, ticket->client, problem = krb5_copy_principal(authctxt->krb5_ctx, ticket->client,
&authctxt->krb5_user); &authctxt->krb5_user);
if (problem) if (problem)
goto err; goto err;
/* if client wants mutual auth */ /* if client wants mutual auth */
problem = krb5_mk_rep(authctxt->krb5_ctx, authctxt->krb5_auth_ctx, problem = krb5_mk_rep(authctxt->krb5_ctx, authctxt->krb5_auth_ctx,
&reply); &reply);
if (problem) if (problem)
goto err; goto err;
/* Check .k5login authorization now. */ /* Check .k5login authorization now. */
if (!krb5_kuserok(authctxt->krb5_ctx, authctxt->krb5_user, if (!krb5_kuserok(authctxt->krb5_ctx, authctxt->krb5_user,
authctxt->pw->pw_name)) authctxt->pw->pw_name))
goto err; goto err;
if (client) if (client)
krb5_unparse_name(authctxt->krb5_ctx, authctxt->krb5_user, krb5_unparse_name(authctxt->krb5_ctx, authctxt->krb5_user,
client); client);
packet_start(SSH_SMSG_AUTH_KERBEROS_RESPONSE); packet_start(SSH_SMSG_AUTH_KERBEROS_RESPONSE);
packet_put_string((char *) reply.data, reply.length); packet_put_string((char *) reply.data, reply.length);
packet_send(); packet_send();
@ -117,7 +117,7 @@ auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client)
krb5_free_ticket(authctxt->krb5_ctx, ticket); krb5_free_ticket(authctxt->krb5_ctx, ticket);
if (reply.length) if (reply.length)
xfree(reply.data); xfree(reply.data);
if (problem) if (problem)
debug("Kerberos v5 authentication failed: %s", debug("Kerberos v5 authentication failed: %s",
krb5_get_err_text(authctxt->krb5_ctx, problem)); krb5_get_err_text(authctxt->krb5_ctx, problem));
@ -131,51 +131,51 @@ auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt)
krb5_error_code problem; krb5_error_code problem;
krb5_ccache ccache = NULL; krb5_ccache ccache = NULL;
char *pname; char *pname;
if (authctxt->pw == NULL || authctxt->krb5_user == NULL) if (authctxt->pw == NULL || authctxt->krb5_user == NULL)
return (0); return (0);
temporarily_use_uid(authctxt->pw); temporarily_use_uid(authctxt->pw);
problem = krb5_cc_gen_new(authctxt->krb5_ctx, &krb5_fcc_ops, &ccache); problem = krb5_cc_gen_new(authctxt->krb5_ctx, &krb5_fcc_ops, &ccache);
if (problem) if (problem)
goto fail; goto fail;
problem = krb5_cc_initialize(authctxt->krb5_ctx, ccache, problem = krb5_cc_initialize(authctxt->krb5_ctx, ccache,
authctxt->krb5_user); authctxt->krb5_user);
if (problem) if (problem)
goto fail; goto fail;
problem = krb5_rd_cred2(authctxt->krb5_ctx, authctxt->krb5_auth_ctx, problem = krb5_rd_cred2(authctxt->krb5_ctx, authctxt->krb5_auth_ctx,
ccache, tgt); ccache, tgt);
if (problem) if (problem)
goto fail; goto fail;
authctxt->krb5_fwd_ccache = ccache; authctxt->krb5_fwd_ccache = ccache;
ccache = NULL; ccache = NULL;
authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache); authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
problem = krb5_unparse_name(authctxt->krb5_ctx, authctxt->krb5_user, problem = krb5_unparse_name(authctxt->krb5_ctx, authctxt->krb5_user,
&pname); &pname);
if (problem) if (problem)
goto fail; goto fail;
debug("Kerberos v5 TGT accepted (%s)", pname); debug("Kerberos v5 TGT accepted (%s)", pname);
restore_uid(); restore_uid();
return (1); return (1);
fail: fail:
if (problem) if (problem)
debug("Kerberos v5 TGT passing failed: %s", debug("Kerberos v5 TGT passing failed: %s",
krb5_get_err_text(authctxt->krb5_ctx, problem)); krb5_get_err_text(authctxt->krb5_ctx, problem));
if (ccache) if (ccache)
krb5_cc_destroy(authctxt->krb5_ctx, ccache); krb5_cc_destroy(authctxt->krb5_ctx, ccache);
restore_uid(); restore_uid();
return (0); return (0);
} }
@ -183,47 +183,50 @@ int
auth_krb5_password(Authctxt *authctxt, const char *password) auth_krb5_password(Authctxt *authctxt, const char *password)
{ {
krb5_error_code problem; krb5_error_code problem;
if (authctxt->pw == NULL) if (authctxt->pw == NULL)
return (0); return (0);
temporarily_use_uid(authctxt->pw); temporarily_use_uid(authctxt->pw);
problem = krb5_init(authctxt); problem = krb5_init(authctxt);
if (problem) if (problem)
goto out; goto out;
problem = krb5_parse_name(authctxt->krb5_ctx, authctxt->pw->pw_name, problem = krb5_parse_name(authctxt->krb5_ctx, authctxt->pw->pw_name,
&authctxt->krb5_user); &authctxt->krb5_user);
if (problem) if (problem)
goto out; goto out;
problem = krb5_cc_gen_new(authctxt->krb5_ctx, &krb5_mcc_ops, problem = krb5_cc_gen_new(authctxt->krb5_ctx, &krb5_mcc_ops,
&authctxt->krb5_fwd_ccache); &authctxt->krb5_fwd_ccache);
if (problem) if (problem)
goto out; goto out;
problem = krb5_cc_initialize(authctxt->krb5_ctx, problem = krb5_cc_initialize(authctxt->krb5_ctx,
authctxt->krb5_fwd_ccache, authctxt->krb5_user); authctxt->krb5_fwd_ccache, authctxt->krb5_user);
if (problem) if (problem)
goto out; goto out;
restore_uid();
problem = krb5_verify_user(authctxt->krb5_ctx, authctxt->krb5_user, problem = krb5_verify_user(authctxt->krb5_ctx, authctxt->krb5_user,
authctxt->krb5_fwd_ccache, password, 1, NULL); authctxt->krb5_fwd_ccache, password, 1, NULL);
temporarily_use_uid(authctxt->pw);
if (problem) if (problem)
goto out; goto out;
authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache); authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
out: out:
restore_uid(); restore_uid();
if (problem) { if (problem) {
debug("Kerberos password authentication failed: %s", debug("Kerberos password authentication failed: %s",
krb5_get_err_text(authctxt->krb5_ctx, problem)); krb5_get_err_text(authctxt->krb5_ctx, problem));
krb5_cleanup_proc(authctxt); krb5_cleanup_proc(authctxt);
if (options.kerberos_or_local_passwd) if (options.kerberos_or_local_passwd)
return (-1); return (-1);
else else
@ -236,7 +239,7 @@ void
krb5_cleanup_proc(void *context) krb5_cleanup_proc(void *context)
{ {
Authctxt *authctxt = (Authctxt *)context; Authctxt *authctxt = (Authctxt *)context;
debug("krb5_cleanup_proc called"); debug("krb5_cleanup_proc called");
if (authctxt->krb5_fwd_ccache) { if (authctxt->krb5_fwd_ccache) {
krb5_cc_destroy(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache); krb5_cc_destroy(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);