Some changes.
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1232 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
@@ -1,11 +1,3 @@
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#if !defined(lint) && !defined(SABER)
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static
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#ifdef __STDC__
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const
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#endif
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char rcsid_kerberos5_c[] = "$Id$";
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#endif /* lint */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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@@ -64,17 +56,29 @@ char rcsid_kerberos5_c[] = "$Id$";
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#include <socks.h>
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#endif
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static const char *error_message(long foo)
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{
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abort();
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}
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RCSID("$Id$");
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#ifdef KRB5
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#include <arpa/telnet.h>
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#include <stdio.h>
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#include <krb5/krb5.h>
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#define Authenticator k5_Authenticator
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#include <krb5.h>
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#undef Authenticator
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#include <des.h>
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#if 0
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#include <krb5/asn1.h>
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#include <krb5/crc-32.h>
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#include <krb5/los-proto.h>
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#include <krb5/ext-proto.h>
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#endif
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#if 0
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#include <com_err.h>
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#endif
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#include <netdb.h>
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#include <ctype.h>
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@@ -116,529 +120,386 @@ static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
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#endif /* FORWARD */
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static krb5_data auth;
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/* telnetd gets session key from here */
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static krb5_tkt_authent *authdat = NULL;
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/* telnetd gets session key from here */
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static /*krb5_tkt_authent*/ void *authdat = NULL;
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/* telnet matches the AP_REQ and AP_REP with this */
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#if 0
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static krb5_authenticator authenticator;
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#endif
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static k5_Authenticator authenticator;
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static krb5_context context;
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static krb5_auth_context *auth_context;
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/* some compilers can't hack void *, so we use the Kerberos krb5_pointer,
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which is either void * or char *, depending on the compiler. */
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#define Voidptr krb5_pointer
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des_cblock session_key;
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static int
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Data(ap, type, d, c)
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Authenticator *ap;
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int type;
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Voidptr d;
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int c;
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static int
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Data(Authenticator *ap, int type, void *d, int c)
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{
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unsigned char *p = str_data + 4;
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unsigned char *cd = (unsigned char *)d;
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unsigned char *p = str_data + 4;
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unsigned char *cd = (unsigned char *)d;
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if (c == -1)
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c = strlen(cd);
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if (c == -1)
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c = strlen(cd);
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if (auth_debug_mode) {
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printf("%s:%d: [%d] (%d)",
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str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
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str_data[3],
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type, c);
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printd(d, c);
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printf("\r\n");
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}
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*p++ = ap->type;
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*p++ = ap->way;
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*p++ = type;
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while (c-- > 0) {
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if ((*p++ = *cd++) == IAC)
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*p++ = IAC;
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}
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*p++ = IAC;
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*p++ = SE;
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if (str_data[3] == TELQUAL_IS)
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printsub('>', &str_data[2], p - &str_data[2]);
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return(net_write(str_data, p - str_data));
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}
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int
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kerberos5_init(Authenticator *ap, int server)
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{
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if (server)
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str_data[3] = TELQUAL_REPLY;
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else
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str_data[3] = TELQUAL_IS;
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krb5_init_context(&context);
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return(1);
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}
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int
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kerberos5_send(Authenticator *ap)
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{
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krb5_error_code r;
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krb5_ccache ccache;
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int ap_opts;
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if (!UserNameRequested) {
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if (auth_debug_mode) {
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printf("%s:%d: [%d] (%d)",
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str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
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str_data[3],
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type, c);
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printd(d, c);
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printf("\r\n");
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printf("Kerberos V5: no user name supplied\r\n");
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}
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*p++ = ap->type;
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*p++ = ap->way;
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*p++ = type;
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while (c-- > 0) {
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if ((*p++ = *cd++) == IAC)
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*p++ = IAC;
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return(0);
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}
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if (r = krb5_cc_default(context, &ccache)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: could not get default ccache\r\n");
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}
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*p++ = IAC;
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*p++ = SE;
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if (str_data[3] == TELQUAL_IS)
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printsub('>', &str_data[2], p - &str_data[2]);
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return(net_write(str_data, p - str_data));
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return(0);
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}
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if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL)
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ap_opts = AP_OPTS_MUTUAL_REQUIRED;
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else
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ap_opts = 0;
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auth_context = NULL;
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r = krb5_mk_req(context, &auth_context, ap_opts,
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"host", RemoteHostName,
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NULL, ccache, &auth);
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if (r) {
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if (auth_debug_mode) {
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printf("Kerberos V5: mk_req failed (%s)\r\n",
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krb5_get_err_text(r));
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}
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return(0);
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}
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if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
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if (auth_debug_mode)
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printf("Not enough room for user name\r\n");
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return(0);
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}
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if (!Data(ap, KRB_AUTH, auth.data, auth.length)) {
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if (auth_debug_mode)
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printf("Not enough room for authentication data\r\n");
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return(0);
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}
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if (auth_debug_mode) {
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printf("Sent Kerberos V5 credentials to server\r\n");
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}
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return(1);
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}
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int
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kerberos5_init(ap, server)
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Authenticator *ap;
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int server;
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void
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kerberos5_is(Authenticator *ap, unsigned char *data, int cnt)
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{
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if (server)
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str_data[3] = TELQUAL_REPLY;
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else
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str_data[3] = TELQUAL_IS;
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krb5_init_ets();
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return(1);
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}
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int r;
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krb5_data outbuf;
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krb5_ticket *ticket;
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krb5_keyblock *key_block;
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int
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kerberos5_send(ap)
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Authenticator *ap;
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{
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char **realms;
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char *name;
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char *p1, *p2;
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krb5_checksum ksum;
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krb5_octet sum[CRC32_CKSUM_LENGTH];
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krb5_principal server;
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krb5_error_code r;
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krb5_ccache ccache;
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krb5_creds creds; /* telnet gets session key from here */
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extern krb5_flags krb5_kdc_default_options;
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int ap_opts;
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if (cnt-- < 1)
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return;
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switch (*data++) {
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case KRB_AUTH:
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auth.data = (char *)data;
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auth.length = cnt;
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auth_context = NULL;
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ksum.checksum_type = CKSUMTYPE_CRC32;
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ksum.contents = sum;
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ksum.length = sizeof(sum);
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memset((Voidptr )sum, 0, sizeof(sum));
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r = krb5_rd_req(context, &auth_context, &auth,
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NULL, NULL, NULL, &ticket);
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if (!UserNameRequested) {
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if (auth_debug_mode) {
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printf("Kerberos V5: no user name supplied\r\n");
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}
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return(0);
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}
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if (r = krb5_cc_default(&ccache)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: could not get default ccache\r\n");
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}
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return(0);
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}
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if ((name = malloc(strlen(RemoteHostName)+1)) == NULL) {
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if (auth_debug_mode)
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printf("Out of memory for hostname in Kerberos V5\r\n");
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return(0);
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}
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if (r = krb5_get_host_realm(RemoteHostName, &realms)) {
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if (auth_debug_mode)
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printf("Kerberos V5: no realm for %s\r\n", RemoteHostName);
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free(name);
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return(0);
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}
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p1 = RemoteHostName;
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p2 = name;
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while (*p2 = *p1++) {
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if (isupper(*p2))
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*p2 |= 040;
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++p2;
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}
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if (r = krb5_build_principal_ext(&server,
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strlen(realms[0]), realms[0],
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4, "host",
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p2 - name, name,
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0)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: failure setting up principal (%s)\r\n",
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error_message(r));
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}
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free(name);
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krb5_free_host_realm(realms);
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return(0);
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}
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memset(&creds, 0, sizeof(creds));
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creds.server = server;
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if (r = krb5_cc_get_principal(ccache, &creds.client)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: failure on principal (%s)\r\n",
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error_message(r));
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}
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free(name);
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krb5_free_principal(server);
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krb5_free_host_realm(realms);
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return(0);
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}
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if (r = krb5_get_credentials(krb5_kdc_default_options, ccache, &creds)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: failure on credentials(%d)\r\n",r);
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}
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free(name);
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krb5_free_host_realm(realms);
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krb5_free_principal(server);
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return(0);
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}
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if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL)
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ap_opts = AP_OPTS_MUTUAL_REQUIRED;
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else
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ap_opts = 0;
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r = krb5_mk_req_extended(ap_opts, &ksum, krb5_kdc_default_options, 0,
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0,
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ccache, &creds, &authenticator, &auth);
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/* don't let the key get freed if we clean up the authenticator */
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authenticator.subkey = 0;
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free(name);
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krb5_free_host_realm(realms);
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krb5_free_principal(server);
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if (r) {
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if (auth_debug_mode) {
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printf("Kerberos V5: mk_req failed (%s)\r\n",
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error_message(r));
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}
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return(0);
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}
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char errbuf[128];
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if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
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if (auth_debug_mode)
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printf("Not enough room for user name\r\n");
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return(0);
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||||
errout:
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authdat = 0;
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||||
strcpy(errbuf, "Read req failed: ");
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strcat(errbuf, error_message(r));
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Data(ap, KRB_REJECT, errbuf, -1);
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if (auth_debug_mode)
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printf("%s\r\n", errbuf);
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return;
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}
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if (!Data(ap, KRB_AUTH, auth.data, auth.length)) {
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if (auth_debug_mode)
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printf("Not enough room for authentication data\r\n");
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return(0);
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#if 0
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||||
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
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r = krb5_mk_rep(context, auth_context, &outbuf);
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||||
if(r){
|
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||||
}
|
||||
Data(ap, KRB_RESPONSE, outbuf.data, outbuf.length);
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}
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if (krb5_unparse_name(context, ticket->enc_part2->client, &name))
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name = 0;
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||||
#endif
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||||
#if 0
|
||||
Data(ap, KRB_ACCEPT, name, name ? -1 : 0);
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||||
if (auth_debug_mode) {
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||||
printf("Sent Kerberos V5 credentials to server\r\n");
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||||
printf("Kerberos5 identifies him as ``%s''\r\n",
|
||||
name ? name : "");
|
||||
}
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||||
return(1);
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||||
}
|
||||
#endif
|
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auth_finished(ap, AUTH_USER);
|
||||
|
||||
void
|
||||
kerberos5_is(ap, data, cnt)
|
||||
Authenticator *ap;
|
||||
unsigned char *data;
|
||||
int cnt;
|
||||
{
|
||||
int r;
|
||||
struct hostent *hp;
|
||||
char *p1, *p2;
|
||||
static char *realm = NULL;
|
||||
krb5_principal server;
|
||||
krb5_ap_rep_enc_part reply;
|
||||
krb5_data outbuf;
|
||||
char *name;
|
||||
char *getenv();
|
||||
krb5_data inbuf;
|
||||
#if 0
|
||||
r = krb5_auth_con_getkey(context, auth_context, &key_block);
|
||||
if(r){
|
||||
}
|
||||
#endif
|
||||
|
||||
if(key_block->keytype == KEYTYPE_DES){
|
||||
memcpy(&session_key, key_block->contents.data,
|
||||
sizeof(session_key));
|
||||
}
|
||||
|
||||
if (cnt-- < 1)
|
||||
return;
|
||||
switch (*data++) {
|
||||
case KRB_AUTH:
|
||||
auth.data = (char *)data;
|
||||
auth.length = cnt;
|
||||
|
||||
if (!(hp = gethostbyname(LocalHostName))) {
|
||||
if (auth_debug_mode)
|
||||
printf("Cannot resolve local host name\r\n");
|
||||
Data(ap, KRB_REJECT, "Unknown local hostname.", -1);
|
||||
auth_finished(ap, AUTH_REJECT);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!realm && (krb5_get_default_realm(&realm))) {
|
||||
if (auth_debug_mode)
|
||||
printf("Could not get default realm\r\n");
|
||||
Data(ap, KRB_REJECT, "Could not get default realm.", -1);
|
||||
auth_finished(ap, AUTH_REJECT);
|
||||
return;
|
||||
}
|
||||
|
||||
if ((name = malloc(strlen(hp->h_name)+1)) == NULL) {
|
||||
if (auth_debug_mode)
|
||||
printf("Out of memory for hostname in Kerberos V5\r\n");
|
||||
Data(ap, KRB_REJECT, "Out of memory.", -1);
|
||||
auth_finished(ap, AUTH_REJECT);
|
||||
return;
|
||||
}
|
||||
|
||||
p1 = hp->h_name;
|
||||
p2 = name;
|
||||
|
||||
while (*p2 = *p1++) {
|
||||
if (isupper(*p2))
|
||||
*p2 |= 040;
|
||||
++p2;
|
||||
}
|
||||
|
||||
if (authdat)
|
||||
krb5_free_tkt_authent(authdat);
|
||||
|
||||
r = krb5_build_principal_ext(&server,
|
||||
strlen(realm), realm,
|
||||
4, "host",
|
||||
p2 - name, name,
|
||||
0);
|
||||
if (!r) {
|
||||
r = krb5_rd_req_simple(&auth, server, 0, &authdat);
|
||||
krb5_free_principal(server);
|
||||
}
|
||||
if (r) {
|
||||
char errbuf[128];
|
||||
|
||||
errout:
|
||||
authdat = 0;
|
||||
strcpy(errbuf, "Read req failed: ");
|
||||
strcat(errbuf, error_message(r));
|
||||
Data(ap, KRB_REJECT, errbuf, -1);
|
||||
if (auth_debug_mode)
|
||||
printf("%s\r\n", errbuf);
|
||||
return;
|
||||
}
|
||||
free(name);
|
||||
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
|
||||
/* do ap_rep stuff here */
|
||||
reply.ctime = authdat->authenticator->ctime;
|
||||
reply.cusec = authdat->authenticator->cusec;
|
||||
reply.subkey = 0; /* use the one he gave us, so don't
|
||||
need to return one here */
|
||||
reply.seq_number = 0; /* we don't do seq #'s. */
|
||||
|
||||
if (r = krb5_mk_rep(&reply,
|
||||
authdat->authenticator->subkey ?
|
||||
authdat->authenticator->subkey :
|
||||
authdat->ticket->enc_part2->session,
|
||||
&outbuf)) {
|
||||
goto errout;
|
||||
}
|
||||
Data(ap, KRB_RESPONSE, outbuf.data, outbuf.length);
|
||||
}
|
||||
if (krb5_unparse_name(authdat->ticket->enc_part2 ->client,
|
||||
&name))
|
||||
name = 0;
|
||||
Data(ap, KRB_ACCEPT, name, name ? -1 : 0);
|
||||
if (auth_debug_mode) {
|
||||
printf("Kerberos5 identifies him as ``%s''\r\n",
|
||||
name ? name : "");
|
||||
}
|
||||
auth_finished(ap, AUTH_USER);
|
||||
|
||||
free(name);
|
||||
if (authdat->authenticator->subkey &&
|
||||
authdat->authenticator->subkey->keytype == KEYTYPE_DES) {
|
||||
memmove((Voidptr )session_key,
|
||||
(Voidptr )authdat->authenticator->subkey->contents,
|
||||
sizeof(des_cblock));
|
||||
} else if (authdat->ticket->enc_part2->session->keytype ==
|
||||
KEYTYPE_DES) {
|
||||
memmove((Voidptr )session_key,
|
||||
(Voidptr )authdat->ticket->enc_part2->session->contents,
|
||||
sizeof(des_cblock));
|
||||
} else
|
||||
break;
|
||||
|
||||
break;
|
||||
#if 0
|
||||
krb5_free_keyblock(context, key_block);
|
||||
#endif
|
||||
|
||||
break;
|
||||
#ifdef FORWARD
|
||||
case KRB_FORWARD:
|
||||
inbuf.data = (char *)data;
|
||||
inbuf.length = cnt;
|
||||
if (r = rd_and_store_for_creds(&inbuf, authdat->ticket,
|
||||
UserNameRequested)) {
|
||||
char errbuf[128];
|
||||
case KRB_FORWARD:
|
||||
inbuf.data = (char *)data;
|
||||
inbuf.length = cnt;
|
||||
if (r = rd_and_store_for_creds(&inbuf, authdat->ticket,
|
||||
UserNameRequested)) {
|
||||
char errbuf[128];
|
||||
|
||||
strcpy(errbuf, "Read forwarded creds failed: ");
|
||||
strcat(errbuf, error_message(r));
|
||||
Data(ap, KRB_FORWARD_REJECT, errbuf, -1);
|
||||
if (auth_debug_mode)
|
||||
printf("Could not read forwarded credentials\r\n");
|
||||
}
|
||||
else
|
||||
Data(ap, KRB_FORWARD_ACCEPT, 0, 0);
|
||||
if (auth_debug_mode)
|
||||
printf("Forwarded credentials obtained\r\n");
|
||||
break;
|
||||
#endif /* FORWARD */
|
||||
default:
|
||||
if (auth_debug_mode)
|
||||
printf("Unknown Kerberos option %d\r\n", data[-1]);
|
||||
Data(ap, KRB_REJECT, 0, 0);
|
||||
break;
|
||||
strcpy(errbuf, "Read forwarded creds failed: ");
|
||||
strcat(errbuf, error_message(r));
|
||||
Data(ap, KRB_FORWARD_REJECT, errbuf, -1);
|
||||
if (auth_debug_mode)
|
||||
printf("Could not read forwarded credentials\r\n");
|
||||
}
|
||||
else
|
||||
Data(ap, KRB_FORWARD_ACCEPT, 0, 0);
|
||||
if (auth_debug_mode)
|
||||
printf("Forwarded credentials obtained\r\n");
|
||||
break;
|
||||
#endif /* FORWARD */
|
||||
default:
|
||||
if (auth_debug_mode)
|
||||
printf("Unknown Kerberos option %d\r\n", data[-1]);
|
||||
Data(ap, KRB_REJECT, 0, 0);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
kerberos5_reply(ap, data, cnt)
|
||||
Authenticator *ap;
|
||||
unsigned char *data;
|
||||
int cnt;
|
||||
void
|
||||
kerberos5_reply(Authenticator *ap, unsigned char *data, int cnt)
|
||||
{
|
||||
Session_Key skey;
|
||||
static int mutual_complete = 0;
|
||||
Session_Key skey;
|
||||
static int mutual_complete = 0;
|
||||
|
||||
if (cnt-- < 1)
|
||||
return;
|
||||
switch (*data++) {
|
||||
case KRB_REJECT:
|
||||
if (cnt > 0) {
|
||||
printf("[ Kerberos V5 refuses authentication because %.*s ]\r\n",
|
||||
cnt, data);
|
||||
} else
|
||||
printf("[ Kerberos V5 refuses authentication ]\r\n");
|
||||
if (cnt-- < 1)
|
||||
return;
|
||||
switch (*data++) {
|
||||
case KRB_REJECT:
|
||||
if (cnt > 0) {
|
||||
printf("[ Kerberos V5 refuses authentication because %.*s ]\r\n",
|
||||
cnt, data);
|
||||
} else
|
||||
printf("[ Kerberos V5 refuses authentication ]\r\n");
|
||||
auth_send_retry();
|
||||
return;
|
||||
case KRB_ACCEPT:
|
||||
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL &&
|
||||
!mutual_complete) {
|
||||
printf("[ Kerberos V5 accepted you, but didn't provide mutual authentication! ]\r\n");
|
||||
auth_send_retry();
|
||||
return;
|
||||
}
|
||||
if (cnt)
|
||||
printf("[ Kerberos V5 accepts you as ``%.*s'' ]\r\n", cnt, data);
|
||||
else
|
||||
printf("[ Kerberos V5 accepts you ]\r\n");
|
||||
auth_finished(ap, AUTH_USER);
|
||||
#ifdef FORWARD
|
||||
if (forward_flags & OPTS_FORWARD_CREDS)
|
||||
kerberos5_forward(ap);
|
||||
#endif /* FORWARD */
|
||||
break;
|
||||
case KRB_RESPONSE:
|
||||
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
|
||||
/* the rest of the reply should contain a krb_ap_rep */
|
||||
#if 0
|
||||
/*krb5_ap_rep_enc_part*/ void *reply;
|
||||
#endif
|
||||
EncAPRepPart *reply;
|
||||
krb5_data inbuf;
|
||||
krb5_error_code r;
|
||||
|
||||
inbuf.length = cnt;
|
||||
inbuf.data = (char *)data;
|
||||
|
||||
if (r = krb5_rd_rep(context, auth_context, &inbuf, &reply)) {
|
||||
printf("[ Mutual authentication failed: %s ]\r\n",
|
||||
error_message(r));
|
||||
auth_send_retry();
|
||||
return;
|
||||
case KRB_ACCEPT:
|
||||
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL &&
|
||||
!mutual_complete) {
|
||||
printf("[ Kerberos V5 accepted you, but didn't provide mutual authentication! ]\r\n");
|
||||
auth_send_retry();
|
||||
return;
|
||||
}
|
||||
if (cnt)
|
||||
printf("[ Kerberos V5 accepts you as ``%.*s'' ]\r\n", cnt, data);
|
||||
else
|
||||
printf("[ Kerberos V5 accepts you ]\r\n");
|
||||
auth_finished(ap, AUTH_USER);
|
||||
#ifdef FORWARD
|
||||
if (forward_flags & OPTS_FORWARD_CREDS)
|
||||
kerberos5_forward(ap);
|
||||
#endif /* FORWARD */
|
||||
break;
|
||||
case KRB_RESPONSE:
|
||||
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
|
||||
/* the rest of the reply should contain a krb_ap_rep */
|
||||
krb5_ap_rep_enc_part *reply;
|
||||
krb5_data inbuf;
|
||||
krb5_error_code r;
|
||||
krb5_keyblock tmpkey;
|
||||
|
||||
inbuf.length = cnt;
|
||||
inbuf.data = (char *)data;
|
||||
|
||||
tmpkey.keytype = KEYTYPE_DES;
|
||||
tmpkey.contents = session_key;
|
||||
tmpkey.length = sizeof(des_cblock);
|
||||
|
||||
if (r = krb5_rd_rep(&inbuf, &tmpkey, &reply)) {
|
||||
printf("[ Mutual authentication failed: %s ]\r\n",
|
||||
error_message(r));
|
||||
auth_send_retry();
|
||||
return;
|
||||
}
|
||||
if (reply->ctime != authenticator.ctime ||
|
||||
reply->cusec != authenticator.cusec) {
|
||||
printf("[ Mutual authentication failed (mismatched KRB_AP_REP) ]\r\n");
|
||||
auth_send_retry();
|
||||
return;
|
||||
}
|
||||
krb5_free_ap_rep_enc_part(reply);
|
||||
mutual_complete = 1;
|
||||
}
|
||||
return;
|
||||
#ifdef FORWARD
|
||||
case KRB_FORWARD_ACCEPT:
|
||||
printf("[ Kerberos V5 accepted forwarded credentials ]\r\n");
|
||||
return;
|
||||
case KRB_FORWARD_REJECT:
|
||||
printf("[ Kerberos V5 refuses forwarded credentials because %.*s ]\r\n",
|
||||
cnt, data);
|
||||
return;
|
||||
#endif /* FORWARD */
|
||||
default:
|
||||
if (auth_debug_mode)
|
||||
printf("Unknown Kerberos option %d\r\n", data[-1]);
|
||||
}
|
||||
#if 0
|
||||
if (reply->ctime != authenticator.ctime ||
|
||||
reply->cusec != authenticator.cusec) {
|
||||
printf("[ Mutual authentication failed (mismatched KRB_AP_REP) ]\r\n");
|
||||
auth_send_retry();
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
krb5_free_ap_rep_enc_part(context, reply);
|
||||
mutual_complete = 1;
|
||||
}
|
||||
return;
|
||||
#ifdef FORWARD
|
||||
case KRB_FORWARD_ACCEPT:
|
||||
printf("[ Kerberos V5 accepted forwarded credentials ]\r\n");
|
||||
return;
|
||||
case KRB_FORWARD_REJECT:
|
||||
printf("[ Kerberos V5 refuses forwarded credentials because %.*s ]\r\n",
|
||||
cnt, data);
|
||||
return;
|
||||
#endif /* FORWARD */
|
||||
default:
|
||||
if (auth_debug_mode)
|
||||
printf("Unknown Kerberos option %d\r\n", data[-1]);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
kerberos5_status(ap, name, level)
|
||||
Authenticator *ap;
|
||||
char *name;
|
||||
int level;
|
||||
int
|
||||
kerberos5_status(Authenticator *ap, char *name, int level)
|
||||
{
|
||||
if (level < AUTH_USER)
|
||||
return(level);
|
||||
if (level < AUTH_USER)
|
||||
return(level);
|
||||
|
||||
if (UserNameRequested &&
|
||||
krb5_kuserok(authdat->ticket->enc_part2->client, UserNameRequested))
|
||||
#if 0
|
||||
if (UserNameRequested &&
|
||||
krb5_kuserok(context, authdat->ticket->enc_part2->client, UserNameRequested))
|
||||
{
|
||||
strcpy(name, UserNameRequested);
|
||||
return(AUTH_VALID);
|
||||
strcpy(name, UserNameRequested);
|
||||
return(AUTH_VALID);
|
||||
} else
|
||||
return(AUTH_USER);
|
||||
return(AUTH_USER);
|
||||
#endif
|
||||
}
|
||||
|
||||
#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
|
||||
#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
|
||||
|
||||
void
|
||||
kerberos5_printsub(data, cnt, buf, buflen)
|
||||
unsigned char *data, *buf;
|
||||
int cnt, buflen;
|
||||
void
|
||||
kerberos5_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen)
|
||||
{
|
||||
char lbuf[32];
|
||||
int i;
|
||||
char lbuf[32];
|
||||
int i;
|
||||
|
||||
buf[buflen-1] = '\0'; /* make sure its NULL terminated */
|
||||
buflen -= 1;
|
||||
buf[buflen-1] = '\0'; /* make sure its NULL terminated */
|
||||
buflen -= 1;
|
||||
|
||||
switch(data[3]) {
|
||||
case KRB_REJECT: /* Rejected (reason might follow) */
|
||||
strncpy((char *)buf, " REJECT ", buflen);
|
||||
goto common;
|
||||
switch(data[3]) {
|
||||
case KRB_REJECT: /* Rejected (reason might follow) */
|
||||
strncpy((char *)buf, " REJECT ", buflen);
|
||||
goto common;
|
||||
|
||||
case KRB_ACCEPT: /* Accepted (name might follow) */
|
||||
strncpy((char *)buf, " ACCEPT ", buflen);
|
||||
common:
|
||||
BUMP(buf, buflen);
|
||||
if (cnt <= 4)
|
||||
break;
|
||||
ADDC(buf, buflen, '"');
|
||||
for (i = 4; i < cnt; i++)
|
||||
ADDC(buf, buflen, data[i]);
|
||||
ADDC(buf, buflen, '"');
|
||||
ADDC(buf, buflen, '\0');
|
||||
break;
|
||||
case KRB_ACCEPT: /* Accepted (name might follow) */
|
||||
strncpy((char *)buf, " ACCEPT ", buflen);
|
||||
common:
|
||||
BUMP(buf, buflen);
|
||||
if (cnt <= 4)
|
||||
break;
|
||||
ADDC(buf, buflen, '"');
|
||||
for (i = 4; i < cnt; i++)
|
||||
ADDC(buf, buflen, data[i]);
|
||||
ADDC(buf, buflen, '"');
|
||||
ADDC(buf, buflen, '\0');
|
||||
break;
|
||||
|
||||
|
||||
case KRB_AUTH: /* Authentication data follows */
|
||||
strncpy((char *)buf, " AUTH", buflen);
|
||||
goto common2;
|
||||
case KRB_AUTH: /* Authentication data follows */
|
||||
strncpy((char *)buf, " AUTH", buflen);
|
||||
goto common2;
|
||||
|
||||
case KRB_RESPONSE:
|
||||
strncpy((char *)buf, " RESPONSE", buflen);
|
||||
goto common2;
|
||||
case KRB_RESPONSE:
|
||||
strncpy((char *)buf, " RESPONSE", buflen);
|
||||
goto common2;
|
||||
|
||||
#ifdef FORWARD
|
||||
case KRB_FORWARD: /* Forwarded credentials follow */
|
||||
strncpy((char *)buf, " FORWARD", buflen);
|
||||
goto common2;
|
||||
case KRB_FORWARD: /* Forwarded credentials follow */
|
||||
strncpy((char *)buf, " FORWARD", buflen);
|
||||
goto common2;
|
||||
|
||||
case KRB_FORWARD_ACCEPT: /* Forwarded credentials accepted */
|
||||
strncpy((char *)buf, " FORWARD_ACCEPT", buflen);
|
||||
goto common2;
|
||||
case KRB_FORWARD_ACCEPT: /* Forwarded credentials accepted */
|
||||
strncpy((char *)buf, " FORWARD_ACCEPT", buflen);
|
||||
goto common2;
|
||||
|
||||
case KRB_FORWARD_REJECT: /* Forwarded credentials rejected */
|
||||
/* (reason might follow) */
|
||||
strncpy((char *)buf, " FORWARD_REJECT", buflen);
|
||||
goto common2;
|
||||
case KRB_FORWARD_REJECT: /* Forwarded credentials rejected */
|
||||
/* (reason might follow) */
|
||||
strncpy((char *)buf, " FORWARD_REJECT", buflen);
|
||||
goto common2;
|
||||
#endif /* FORWARD */
|
||||
|
||||
default:
|
||||
sprintf(lbuf, " %d (unknown)", data[3]);
|
||||
strncpy((char *)buf, lbuf, buflen);
|
||||
common2:
|
||||
BUMP(buf, buflen);
|
||||
for (i = 4; i < cnt; i++) {
|
||||
sprintf(lbuf, " %d", data[i]);
|
||||
strncpy((char *)buf, lbuf, buflen);
|
||||
BUMP(buf, buflen);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
sprintf(lbuf, " %d (unknown)", data[3]);
|
||||
strncpy((char *)buf, lbuf, buflen);
|
||||
common2:
|
||||
BUMP(buf, buflen);
|
||||
for (i = 4; i < cnt; i++) {
|
||||
sprintf(lbuf, " %d", data[i]);
|
||||
strncpy((char *)buf, lbuf, buflen);
|
||||
BUMP(buf, buflen);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef FORWARD
|
||||
void
|
||||
kerberos5_forward(ap)
|
||||
Authenticator *ap;
|
||||
void
|
||||
kerberos5_forward(Authenticator *ap)
|
||||
{
|
||||
struct hostent *hp;
|
||||
krb5_creds *local_creds;
|
||||
@@ -651,31 +512,31 @@ kerberos5_forward(ap)
|
||||
if (!(local_creds = (krb5_creds *)
|
||||
calloc(1, sizeof(*local_creds)))) {
|
||||
if (auth_debug_mode)
|
||||
printf("Kerberos V5: could not allocate memory for credentials\r\n");
|
||||
printf("Kerberos V5: could not allocate memory for credentials\r\n");
|
||||
return;
|
||||
}
|
||||
|
||||
if (r = krb5_sname_to_principal(RemoteHostName, "host", 1,
|
||||
if (r = krb5_sname_to_principal(context, RemoteHostName, "host", 1,
|
||||
&local_creds->server)) {
|
||||
if (auth_debug_mode)
|
||||
printf("Kerberos V5: could not build server name - %s\r\n",
|
||||
error_message(r));
|
||||
printf("Kerberos V5: could not build server name - %s\r\n",
|
||||
error_message(r));
|
||||
krb5_free_creds(local_creds);
|
||||
return;
|
||||
}
|
||||
|
||||
if (r = krb5_cc_default(&ccache)) {
|
||||
if (auth_debug_mode)
|
||||
printf("Kerberos V5: could not get default ccache - %s\r\n",
|
||||
error_message(r));
|
||||
printf("Kerberos V5: could not get default ccache - %s\r\n",
|
||||
error_message(r));
|
||||
krb5_free_creds(local_creds);
|
||||
return;
|
||||
}
|
||||
|
||||
if (r = krb5_cc_get_principal(ccache, &local_creds->client)) {
|
||||
if (auth_debug_mode)
|
||||
printf("Kerberos V5: could not get default principal - %s\r\n",
|
||||
error_message(r));
|
||||
printf("Kerberos V5: could not get default principal - %s\r\n",
|
||||
error_message(r));
|
||||
krb5_free_creds(local_creds);
|
||||
return;
|
||||
}
|
||||
@@ -683,8 +544,8 @@ kerberos5_forward(ap)
|
||||
/* Get ticket from credentials cache */
|
||||
if (r = krb5_get_credentials(KRB5_GC_CACHED, ccache, local_creds)) {
|
||||
if (auth_debug_mode)
|
||||
printf("Kerberos V5: could not obtain credentials - %s\r\n",
|
||||
error_message(r));
|
||||
printf("Kerberos V5: could not obtain credentials - %s\r\n",
|
||||
error_message(r));
|
||||
krb5_free_creds(local_creds);
|
||||
return;
|
||||
}
|
||||
@@ -697,8 +558,8 @@ kerberos5_forward(ap)
|
||||
forward_flags & OPTS_FORWARDABLE_CREDS,
|
||||
&forw_creds)) {
|
||||
if (auth_debug_mode)
|
||||
printf("Kerberos V5: error getting forwarded creds - %s\r\n",
|
||||
error_message(r));
|
||||
printf("Kerberos V5: error getting forwarded creds - %s\r\n",
|
||||
error_message(r));
|
||||
krb5_free_creds(local_creds);
|
||||
return;
|
||||
}
|
||||
@@ -706,11 +567,11 @@ kerberos5_forward(ap)
|
||||
/* Send forwarded credentials */
|
||||
if (!Data(ap, KRB_FORWARD, forw_creds.data, forw_creds.length)) {
|
||||
if (auth_debug_mode)
|
||||
printf("Not enough room for authentication data\r\n");
|
||||
printf("Not enough room for authentication data\r\n");
|
||||
}
|
||||
else {
|
||||
if (auth_debug_mode)
|
||||
printf("Forwarded local Kerberos V5 credentials to server\r\n");
|
||||
printf("Forwarded local Kerberos V5 credentials to server\r\n");
|
||||
}
|
||||
|
||||
krb5_free_creds(local_creds);
|
||||
|
||||
Reference in New Issue
Block a user