diff options
Diffstat (limited to 'third_party/heimdal/lib/krb5/rd_rep.c')
| -rw-r--r-- | third_party/heimdal/lib/krb5/rd_rep.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/krb5/rd_rep.c b/third_party/heimdal/lib/krb5/rd_rep.c new file mode 100644 index 0000000..9968db3 --- /dev/null +++ b/third_party/heimdal/lib/krb5/rd_rep.c @@ -0,0 +1,121 @@ +/* + * Copyright (c) 1997 - 2001 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" + +KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL +krb5_rd_rep(krb5_context context, + krb5_auth_context auth_context, + const krb5_data *inbuf, + krb5_ap_rep_enc_part **repl) +{ + krb5_error_code ret; + AP_REP ap_rep; + size_t len; + krb5_data data; + krb5_crypto crypto; + + *repl = NULL; + krb5_data_zero (&data); + + ret = decode_AP_REP(inbuf->data, inbuf->length, &ap_rep, &len); + if (ret) + return ret; + if (ap_rep.pvno != 5) { + ret = KRB5KRB_AP_ERR_BADVERSION; + krb5_clear_error_message (context); + goto out; + } + if (ap_rep.msg_type != krb_ap_rep) { + ret = KRB5KRB_AP_ERR_MSG_TYPE; + krb5_clear_error_message (context); + goto out; + } + + ret = krb5_crypto_init(context, auth_context->keyblock, 0, &crypto); + if (ret) + goto out; + ret = krb5_decrypt_EncryptedData(context, + crypto, + KRB5_KU_AP_REQ_ENC_PART, + &ap_rep.enc_part, + &data); + krb5_crypto_destroy(context, crypto); + if (ret) + goto out; + + *repl = malloc(sizeof(**repl)); + if (*repl == NULL) { + ret = krb5_enomem(context); + goto out; + } + ret = decode_EncAPRepPart(data.data, data.length, *repl, &len); + if (ret) { + krb5_set_error_message(context, ret, N_("Failed to decode EncAPRepPart", "")); + goto out; + } + + if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_TIME) { + if ((*repl)->ctime != auth_context->authenticator->ctime || + (*repl)->cusec != auth_context->authenticator->cusec) + { + ret = KRB5KRB_AP_ERR_MUT_FAIL; + krb5_clear_error_message(context); + goto out; + } + } + if ((*repl)->seq_number) + krb5_auth_con_setremoteseqnumber(context, auth_context, + *((*repl)->seq_number)); + if ((*repl)->subkey) + krb5_auth_con_setremotesubkey(context, auth_context, (*repl)->subkey); + + out: + if (ret) { + krb5_free_ap_rep_enc_part(context, *repl); + *repl = NULL; + } + krb5_data_free(&data); + free_AP_REP(&ap_rep); + return ret; +} + +KRB5_LIB_FUNCTION void KRB5_LIB_CALL +krb5_free_ap_rep_enc_part (krb5_context context, + krb5_ap_rep_enc_part *val) +{ + if (val) { + free_EncAPRepPart (val); + free (val); + } +} |