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-rw-r--r--lib/krb5/get_in_tkt.c834
1 files changed, 834 insertions, 0 deletions
diff --git a/lib/krb5/get_in_tkt.c b/lib/krb5/get_in_tkt.c
new file mode 100644
index 0000000..ffd4ca2
--- /dev/null
+++ b/lib/krb5/get_in_tkt.c
@@ -0,0 +1,834 @@
+/*
+ * Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "krb5_locl.h"
+
+RCSID("$Id: get_in_tkt.c 20226 2007-02-16 03:31:50Z lha $");
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_init_etype (krb5_context context,
+ unsigned *len,
+ krb5_enctype **val,
+ const krb5_enctype *etypes)
+{
+ int i;
+ krb5_error_code ret;
+ krb5_enctype *tmp = NULL;
+
+ ret = 0;
+ if (etypes == NULL) {
+ ret = krb5_get_default_in_tkt_etypes(context,
+ &tmp);
+ if (ret)
+ return ret;
+ etypes = tmp;
+ }
+
+ for (i = 0; etypes[i]; ++i)
+ ;
+ *len = i;
+ *val = malloc(i * sizeof(**val));
+ if (i != 0 && *val == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto cleanup;
+ }
+ memmove (*val,
+ etypes,
+ i * sizeof(*tmp));
+cleanup:
+ if (tmp != NULL)
+ free (tmp);
+ return ret;
+}
+
+
+static krb5_error_code
+decrypt_tkt (krb5_context context,
+ krb5_keyblock *key,
+ krb5_key_usage usage,
+ krb5_const_pointer decrypt_arg,
+ krb5_kdc_rep *dec_rep)
+{
+ krb5_error_code ret;
+ krb5_data data;
+ size_t size;
+ krb5_crypto crypto;
+
+ ret = krb5_crypto_init(context, key, 0, &crypto);
+ if (ret)
+ return ret;
+
+ ret = krb5_decrypt_EncryptedData (context,
+ crypto,
+ usage,
+ &dec_rep->kdc_rep.enc_part,
+ &data);
+ krb5_crypto_destroy(context, crypto);
+
+ if (ret)
+ return ret;
+
+ ret = krb5_decode_EncASRepPart(context,
+ data.data,
+ data.length,
+ &dec_rep->enc_part,
+ &size);
+ if (ret)
+ ret = krb5_decode_EncTGSRepPart(context,
+ data.data,
+ data.length,
+ &dec_rep->enc_part,
+ &size);
+ krb5_data_free (&data);
+ if (ret)
+ return ret;
+ return 0;
+}
+
+int
+_krb5_extract_ticket(krb5_context context,
+ krb5_kdc_rep *rep,
+ krb5_creds *creds,
+ krb5_keyblock *key,
+ krb5_const_pointer keyseed,
+ krb5_key_usage key_usage,
+ krb5_addresses *addrs,
+ unsigned nonce,
+ unsigned flags,
+ krb5_decrypt_proc decrypt_proc,
+ krb5_const_pointer decryptarg)
+{
+ krb5_error_code ret;
+ krb5_principal tmp_principal;
+ int tmp;
+ size_t len;
+ time_t tmp_time;
+ krb5_timestamp sec_now;
+
+ ret = _krb5_principalname2krb5_principal (context,
+ &tmp_principal,
+ rep->kdc_rep.cname,
+ rep->kdc_rep.crealm);
+ if (ret)
+ goto out;
+
+ /* compare client */
+
+ if((flags & EXTRACT_TICKET_ALLOW_CNAME_MISMATCH) == 0){
+ tmp = krb5_principal_compare (context, tmp_principal, creds->client);
+ if (!tmp) {
+ krb5_free_principal (context, tmp_principal);
+ krb5_clear_error_string (context);
+ ret = KRB5KRB_AP_ERR_MODIFIED;
+ goto out;
+ }
+ }
+
+ krb5_free_principal (context, creds->client);
+ creds->client = tmp_principal;
+
+ /* extract ticket */
+ ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
+ &rep->kdc_rep.ticket, &len, ret);
+ if(ret)
+ goto out;
+ if (creds->ticket.length != len)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+ creds->second_ticket.length = 0;
+ creds->second_ticket.data = NULL;
+
+ /* compare server */
+
+ ret = _krb5_principalname2krb5_principal (context,
+ &tmp_principal,
+ rep->kdc_rep.ticket.sname,
+ rep->kdc_rep.ticket.realm);
+ if (ret)
+ goto out;
+ if(flags & EXTRACT_TICKET_ALLOW_SERVER_MISMATCH){
+ krb5_free_principal(context, creds->server);
+ creds->server = tmp_principal;
+ tmp_principal = NULL;
+ } else {
+ tmp = krb5_principal_compare (context, tmp_principal,
+ creds->server);
+ krb5_free_principal (context, tmp_principal);
+ if (!tmp) {
+ ret = KRB5KRB_AP_ERR_MODIFIED;
+ krb5_clear_error_string (context);
+ goto out;
+ }
+ }
+
+ /* decrypt */
+
+ if (decrypt_proc == NULL)
+ decrypt_proc = decrypt_tkt;
+
+ ret = (*decrypt_proc)(context, key, key_usage, decryptarg, rep);
+ if (ret)
+ goto out;
+
+ /* verify names */
+ if(flags & EXTRACT_TICKET_MATCH_REALM){
+ const char *srealm = krb5_principal_get_realm(context, creds->server);
+ const char *crealm = krb5_principal_get_realm(context, creds->client);
+
+ if (strcmp(rep->enc_part.srealm, srealm) != 0 ||
+ strcmp(rep->enc_part.srealm, crealm) != 0)
+ {
+ ret = KRB5KRB_AP_ERR_MODIFIED;
+ krb5_clear_error_string(context);
+ goto out;
+ }
+ }
+
+ /* compare nonces */
+
+ if (nonce != rep->enc_part.nonce) {
+ ret = KRB5KRB_AP_ERR_MODIFIED;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto out;
+ }
+
+ /* set kdc-offset */
+
+ krb5_timeofday (context, &sec_now);
+ if (rep->enc_part.flags.initial
+ && context->kdc_sec_offset == 0
+ && krb5_config_get_bool (context, NULL,
+ "libdefaults",
+ "kdc_timesync",
+ NULL)) {
+ context->kdc_sec_offset = rep->enc_part.authtime - sec_now;
+ krb5_timeofday (context, &sec_now);
+ }
+
+ /* check all times */
+
+ if (rep->enc_part.starttime) {
+ tmp_time = *rep->enc_part.starttime;
+ } else
+ tmp_time = rep->enc_part.authtime;
+
+ if (creds->times.starttime == 0
+ && abs(tmp_time - sec_now) > context->max_skew) {
+ ret = KRB5KRB_AP_ERR_SKEW;
+ krb5_set_error_string (context,
+ "time skew (%d) larger than max (%d)",
+ abs(tmp_time - sec_now),
+ (int)context->max_skew);
+ goto out;
+ }
+
+ if (creds->times.starttime != 0
+ && tmp_time != creds->times.starttime) {
+ krb5_clear_error_string (context);
+ ret = KRB5KRB_AP_ERR_MODIFIED;
+ goto out;
+ }
+
+ creds->times.starttime = tmp_time;
+
+ if (rep->enc_part.renew_till) {
+ tmp_time = *rep->enc_part.renew_till;
+ } else
+ tmp_time = 0;
+
+ if (creds->times.renew_till != 0
+ && tmp_time > creds->times.renew_till) {
+ krb5_clear_error_string (context);
+ ret = KRB5KRB_AP_ERR_MODIFIED;
+ goto out;
+ }
+
+ creds->times.renew_till = tmp_time;
+
+ creds->times.authtime = rep->enc_part.authtime;
+
+ if (creds->times.endtime != 0
+ && rep->enc_part.endtime > creds->times.endtime) {
+ krb5_clear_error_string (context);
+ ret = KRB5KRB_AP_ERR_MODIFIED;
+ goto out;
+ }
+
+ creds->times.endtime = rep->enc_part.endtime;
+
+ if(rep->enc_part.caddr)
+ krb5_copy_addresses (context, rep->enc_part.caddr, &creds->addresses);
+ else if(addrs)
+ krb5_copy_addresses (context, addrs, &creds->addresses);
+ else {
+ creds->addresses.len = 0;
+ creds->addresses.val = NULL;
+ }
+ creds->flags.b = rep->enc_part.flags;
+
+ creds->authdata.len = 0;
+ creds->authdata.val = NULL;
+ creds->session.keyvalue.length = 0;
+ creds->session.keyvalue.data = NULL;
+ creds->session.keytype = rep->enc_part.key.keytype;
+ ret = krb5_data_copy (&creds->session.keyvalue,
+ rep->enc_part.key.keyvalue.data,
+ rep->enc_part.key.keyvalue.length);
+
+out:
+ memset (rep->enc_part.key.keyvalue.data, 0,
+ rep->enc_part.key.keyvalue.length);
+ return ret;
+}
+
+
+static krb5_error_code
+make_pa_enc_timestamp(krb5_context context, PA_DATA *pa,
+ krb5_enctype etype, krb5_keyblock *key)
+{
+ PA_ENC_TS_ENC p;
+ unsigned char *buf;
+ size_t buf_size;
+ size_t len;
+ EncryptedData encdata;
+ krb5_error_code ret;
+ int32_t usec;
+ int usec2;
+ krb5_crypto crypto;
+
+ krb5_us_timeofday (context, &p.patimestamp, &usec);
+ usec2 = usec;
+ p.pausec = &usec2;
+
+ ASN1_MALLOC_ENCODE(PA_ENC_TS_ENC, buf, buf_size, &p, &len, ret);
+ if (ret)
+ return ret;
+ if(buf_size != len)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+ ret = krb5_crypto_init(context, key, 0, &crypto);
+ if (ret) {
+ free(buf);
+ return ret;
+ }
+ ret = krb5_encrypt_EncryptedData(context,
+ crypto,
+ KRB5_KU_PA_ENC_TIMESTAMP,
+ buf,
+ len,
+ 0,
+ &encdata);
+ free(buf);
+ krb5_crypto_destroy(context, crypto);
+ if (ret)
+ return ret;
+
+ ASN1_MALLOC_ENCODE(EncryptedData, buf, buf_size, &encdata, &len, ret);
+ free_EncryptedData(&encdata);
+ if (ret)
+ return ret;
+ if(buf_size != len)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+ pa->padata_type = KRB5_PADATA_ENC_TIMESTAMP;
+ pa->padata_value.length = len;
+ pa->padata_value.data = buf;
+ return 0;
+}
+
+static krb5_error_code
+add_padata(krb5_context context,
+ METHOD_DATA *md,
+ krb5_principal client,
+ krb5_key_proc key_proc,
+ krb5_const_pointer keyseed,
+ krb5_enctype *enctypes,
+ unsigned netypes,
+ krb5_salt *salt)
+{
+ krb5_error_code ret;
+ PA_DATA *pa2;
+ krb5_salt salt2;
+ krb5_enctype *ep;
+ int i;
+
+ if(salt == NULL) {
+ /* default to standard salt */
+ ret = krb5_get_pw_salt (context, client, &salt2);
+ salt = &salt2;
+ }
+ if (!enctypes) {
+ enctypes = context->etypes;
+ netypes = 0;
+ for (ep = enctypes; *ep != ETYPE_NULL; ep++)
+ netypes++;
+ }
+ pa2 = realloc (md->val, (md->len + netypes) * sizeof(*md->val));
+ if (pa2 == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ return ENOMEM;
+ }
+ md->val = pa2;
+
+ for (i = 0; i < netypes; ++i) {
+ krb5_keyblock *key;
+
+ ret = (*key_proc)(context, enctypes[i], *salt, keyseed, &key);
+ if (ret)
+ continue;
+ ret = make_pa_enc_timestamp (context, &md->val[md->len],
+ enctypes[i], key);
+ krb5_free_keyblock (context, key);
+ if (ret)
+ return ret;
+ ++md->len;
+ }
+ if(salt == &salt2)
+ krb5_free_salt(context, salt2);
+ return 0;
+}
+
+static krb5_error_code
+init_as_req (krb5_context context,
+ KDCOptions opts,
+ krb5_creds *creds,
+ const krb5_addresses *addrs,
+ const krb5_enctype *etypes,
+ const krb5_preauthtype *ptypes,
+ const krb5_preauthdata *preauth,
+ krb5_key_proc key_proc,
+ krb5_const_pointer keyseed,
+ unsigned nonce,
+ AS_REQ *a)
+{
+ krb5_error_code ret;
+ krb5_salt salt;
+
+ memset(a, 0, sizeof(*a));
+
+ a->pvno = 5;
+ a->msg_type = krb_as_req;
+ a->req_body.kdc_options = opts;
+ a->req_body.cname = malloc(sizeof(*a->req_body.cname));
+ if (a->req_body.cname == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto fail;
+ }
+ a->req_body.sname = malloc(sizeof(*a->req_body.sname));
+ if (a->req_body.sname == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto fail;
+ }
+ ret = _krb5_principal2principalname (a->req_body.cname, creds->client);
+ if (ret)
+ goto fail;
+ ret = _krb5_principal2principalname (a->req_body.sname, creds->server);
+ if (ret)
+ goto fail;
+ ret = copy_Realm(&creds->client->realm, &a->req_body.realm);
+ if (ret)
+ goto fail;
+
+ if(creds->times.starttime) {
+ a->req_body.from = malloc(sizeof(*a->req_body.from));
+ if (a->req_body.from == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto fail;
+ }
+ *a->req_body.from = creds->times.starttime;
+ }
+ if(creds->times.endtime){
+ ALLOC(a->req_body.till, 1);
+ *a->req_body.till = creds->times.endtime;
+ }
+ if(creds->times.renew_till){
+ a->req_body.rtime = malloc(sizeof(*a->req_body.rtime));
+ if (a->req_body.rtime == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto fail;
+ }
+ *a->req_body.rtime = creds->times.renew_till;
+ }
+ a->req_body.nonce = nonce;
+ ret = krb5_init_etype (context,
+ &a->req_body.etype.len,
+ &a->req_body.etype.val,
+ etypes);
+ if (ret)
+ goto fail;
+
+ /*
+ * This means no addresses
+ */
+
+ if (addrs && addrs->len == 0) {
+ a->req_body.addresses = NULL;
+ } else {
+ a->req_body.addresses = malloc(sizeof(*a->req_body.addresses));
+ if (a->req_body.addresses == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto fail;
+ }
+
+ if (addrs)
+ ret = krb5_copy_addresses(context, addrs, a->req_body.addresses);
+ else {
+ ret = krb5_get_all_client_addrs (context, a->req_body.addresses);
+ if(ret == 0 && a->req_body.addresses->len == 0) {
+ free(a->req_body.addresses);
+ a->req_body.addresses = NULL;
+ }
+ }
+ if (ret)
+ return ret;
+ }
+
+ a->req_body.enc_authorization_data = NULL;
+ a->req_body.additional_tickets = NULL;
+
+ if(preauth != NULL) {
+ int i;
+ ALLOC(a->padata, 1);
+ if(a->padata == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto fail;
+ }
+ a->padata->val = NULL;
+ a->padata->len = 0;
+ for(i = 0; i < preauth->len; i++) {
+ if(preauth->val[i].type == KRB5_PADATA_ENC_TIMESTAMP){
+ int j;
+
+ for(j = 0; j < preauth->val[i].info.len; j++) {
+ krb5_salt *sp = &salt;
+ if(preauth->val[i].info.val[j].salttype)
+ salt.salttype = *preauth->val[i].info.val[j].salttype;
+ else
+ salt.salttype = KRB5_PW_SALT;
+ if(preauth->val[i].info.val[j].salt)
+ salt.saltvalue = *preauth->val[i].info.val[j].salt;
+ else
+ if(salt.salttype == KRB5_PW_SALT)
+ sp = NULL;
+ else
+ krb5_data_zero(&salt.saltvalue);
+ ret = add_padata(context, a->padata, creds->client,
+ key_proc, keyseed,
+ &preauth->val[i].info.val[j].etype, 1,
+ sp);
+ if (ret == 0)
+ break;
+ }
+ }
+ }
+ } else
+ /* not sure this is the way to use `ptypes' */
+ if (ptypes == NULL || *ptypes == KRB5_PADATA_NONE)
+ a->padata = NULL;
+ else if (*ptypes == KRB5_PADATA_ENC_TIMESTAMP) {
+ ALLOC(a->padata, 1);
+ if (a->padata == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_string(context, "malloc: out of memory");
+ goto fail;
+ }
+ a->padata->len = 0;
+ a->padata->val = NULL;
+
+ /* make a v5 salted pa-data */
+ add_padata(context, a->padata, creds->client,
+ key_proc, keyseed, a->req_body.etype.val,
+ a->req_body.etype.len, NULL);
+
+ /* make a v4 salted pa-data */
+ salt.salttype = KRB5_PW_SALT;
+ krb5_data_zero(&salt.saltvalue);
+ add_padata(context, a->padata, creds->client,
+ key_proc, keyseed, a->req_body.etype.val,
+ a->req_body.etype.len, &salt);
+ } else {
+ krb5_set_error_string (context, "pre-auth type %d not supported",
+ *ptypes);
+ ret = KRB5_PREAUTH_BAD_TYPE;
+ goto fail;
+ }
+ return 0;
+fail:
+ free_AS_REQ(a);
+ return ret;
+}
+
+static int
+set_ptypes(krb5_context context,
+ KRB_ERROR *error,
+ const krb5_preauthtype **ptypes,
+ krb5_preauthdata **preauth)
+{
+ static krb5_preauthdata preauth2;
+ static krb5_preauthtype ptypes2[] = { KRB5_PADATA_ENC_TIMESTAMP, KRB5_PADATA_NONE };
+
+ if(error->e_data) {
+ METHOD_DATA md;
+ int i;
+ decode_METHOD_DATA(error->e_data->data,
+ error->e_data->length,
+ &md,
+ NULL);
+ for(i = 0; i < md.len; i++){
+ switch(md.val[i].padata_type){
+ case KRB5_PADATA_ENC_TIMESTAMP:
+ *ptypes = ptypes2;
+ break;
+ case KRB5_PADATA_ETYPE_INFO:
+ *preauth = &preauth2;
+ ALLOC_SEQ(*preauth, 1);
+ (*preauth)->val[0].type = KRB5_PADATA_ENC_TIMESTAMP;
+ krb5_decode_ETYPE_INFO(context,
+ md.val[i].padata_value.data,
+ md.val[i].padata_value.length,
+ &(*preauth)->val[0].info,
+ NULL);
+ break;
+ default:
+ break;
+ }
+ }
+ free_METHOD_DATA(&md);
+ } else {
+ *ptypes = ptypes2;
+ }
+ return(1);
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_get_in_cred(krb5_context context,
+ krb5_flags options,
+ const krb5_addresses *addrs,
+ const krb5_enctype *etypes,
+ const krb5_preauthtype *ptypes,
+ const krb5_preauthdata *preauth,
+ krb5_key_proc key_proc,
+ krb5_const_pointer keyseed,
+ krb5_decrypt_proc decrypt_proc,
+ krb5_const_pointer decryptarg,
+ krb5_creds *creds,
+ krb5_kdc_rep *ret_as_reply)
+{
+ krb5_error_code ret;
+ AS_REQ a;
+ krb5_kdc_rep rep;
+ krb5_data req, resp;
+ size_t len;
+ krb5_salt salt;
+ krb5_keyblock *key;
+ size_t size;
+ KDCOptions opts;
+ PA_DATA *pa;
+ krb5_enctype etype;
+ krb5_preauthdata *my_preauth = NULL;
+ unsigned nonce;
+ int done;
+
+ opts = int2KDCOptions(options);
+
+ krb5_generate_random_block (&nonce, sizeof(nonce));
+ nonce &= 0xffffffff;
+
+ do {
+ done = 1;
+ ret = init_as_req (context,
+ opts,
+ creds,
+ addrs,
+ etypes,
+ ptypes,
+ preauth,
+ key_proc,
+ keyseed,
+ nonce,
+ &a);
+ if (my_preauth) {
+ free_ETYPE_INFO(&my_preauth->val[0].info);
+ free (my_preauth->val);
+ my_preauth = NULL;
+ }
+ if (ret)
+ return ret;
+
+ ASN1_MALLOC_ENCODE(AS_REQ, req.data, req.length, &a, &len, ret);
+ free_AS_REQ(&a);
+ if (ret)
+ return ret;
+ if(len != req.length)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+
+ ret = krb5_sendto_kdc (context, &req, &creds->client->realm, &resp);
+ krb5_data_free(&req);
+ if (ret)
+ return ret;
+
+ memset (&rep, 0, sizeof(rep));
+ ret = decode_AS_REP(resp.data, resp.length, &rep.kdc_rep, &size);
+ if(ret) {
+ /* let's try to parse it as a KRB-ERROR */
+ KRB_ERROR error;
+ int ret2;
+
+ ret2 = krb5_rd_error(context, &resp, &error);
+ if(ret2 && resp.data && ((char*)resp.data)[0] == 4)
+ ret = KRB5KRB_AP_ERR_V4_REPLY;
+ krb5_data_free(&resp);
+ if (ret2 == 0) {
+ ret = krb5_error_from_rd_error(context, &error, creds);
+ /* if no preauth was set and KDC requires it, give it
+ one more try */
+ if (!ptypes && !preauth
+ && ret == KRB5KDC_ERR_PREAUTH_REQUIRED
+#if 0
+ || ret == KRB5KDC_ERR_BADOPTION
+#endif
+ && set_ptypes(context, &error, &ptypes, &my_preauth)) {
+ done = 0;
+ preauth = my_preauth;
+ krb5_free_error_contents(context, &error);
+ krb5_clear_error_string(context);
+ continue;
+ }
+ if(ret_as_reply)
+ ret_as_reply->error = error;
+ else
+ free_KRB_ERROR (&error);
+ return ret;
+ }
+ return ret;
+ }
+ krb5_data_free(&resp);
+ } while(!done);
+
+ pa = NULL;
+ etype = rep.kdc_rep.enc_part.etype;
+ if(rep.kdc_rep.padata){
+ int i = 0;
+ pa = krb5_find_padata(rep.kdc_rep.padata->val, rep.kdc_rep.padata->len,
+ KRB5_PADATA_PW_SALT, &i);
+ if(pa == NULL) {
+ i = 0;
+ pa = krb5_find_padata(rep.kdc_rep.padata->val,
+ rep.kdc_rep.padata->len,
+ KRB5_PADATA_AFS3_SALT, &i);
+ }
+ }
+ if(pa) {
+ salt.salttype = pa->padata_type;
+ salt.saltvalue = pa->padata_value;
+
+ ret = (*key_proc)(context, etype, salt, keyseed, &key);
+ } else {
+ /* make a v5 salted pa-data */
+ ret = krb5_get_pw_salt (context, creds->client, &salt);
+
+ if (ret)
+ goto out;
+ ret = (*key_proc)(context, etype, salt, keyseed, &key);
+ krb5_free_salt(context, salt);
+ }
+ if (ret)
+ goto out;
+
+ {
+ unsigned flags = 0;
+ if (opts.request_anonymous)
+ flags |= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH;
+
+ ret = _krb5_extract_ticket(context,
+ &rep,
+ creds,
+ key,
+ keyseed,
+ KRB5_KU_AS_REP_ENC_PART,
+ NULL,
+ nonce,
+ flags,
+ decrypt_proc,
+ decryptarg);
+ }
+ memset (key->keyvalue.data, 0, key->keyvalue.length);
+ krb5_free_keyblock_contents (context, key);
+ free (key);
+
+out:
+ if (ret == 0 && ret_as_reply)
+ *ret_as_reply = rep;
+ else
+ krb5_free_kdc_rep (context, &rep);
+ return ret;
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_get_in_tkt(krb5_context context,
+ krb5_flags options,
+ const krb5_addresses *addrs,
+ const krb5_enctype *etypes,
+ const krb5_preauthtype *ptypes,
+ krb5_key_proc key_proc,
+ krb5_const_pointer keyseed,
+ krb5_decrypt_proc decrypt_proc,
+ krb5_const_pointer decryptarg,
+ krb5_creds *creds,
+ krb5_ccache ccache,
+ krb5_kdc_rep *ret_as_reply)
+{
+ krb5_error_code ret;
+
+ ret = krb5_get_in_cred (context,
+ options,
+ addrs,
+ etypes,
+ ptypes,
+ NULL,
+ key_proc,
+ keyseed,
+ decrypt_proc,
+ decryptarg,
+ creds,
+ ret_as_reply);
+ if(ret)
+ return ret;
+ if (ccache)
+ ret = krb5_cc_store_cred (context, ccache, creds);
+ return ret;
+}
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