diff options
Diffstat (limited to 'crypto/heimdal/lib/krb5/rd_safe.c')
-rw-r--r-- | crypto/heimdal/lib/krb5/rd_safe.c | 104 |
1 files changed, 53 insertions, 51 deletions
diff --git a/crypto/heimdal/lib/krb5/rd_safe.c b/crypto/heimdal/lib/krb5/rd_safe.c index b2fb5c5..e62906b 100644 --- a/crypto/heimdal/lib/krb5/rd_safe.c +++ b/crypto/heimdal/lib/krb5/rd_safe.c @@ -1,39 +1,37 @@ /* - * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * All rights reserved. + * Copyright (c) 1997 - 2003 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: + * 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. + * 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. + * 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. + * 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. + * 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: rd_safe.c 19827 2007-01-11 02:54:59Z lha $"); +#include "krb5_locl.h" static krb5_error_code verify_checksum(krb5_context context, @@ -43,7 +41,7 @@ verify_checksum(krb5_context context, krb5_error_code ret; u_char *buf; size_t buf_size; - size_t len; + size_t len = 0; Checksum c; krb5_crypto crypto; krb5_keyblock *key; @@ -82,7 +80,7 @@ out: return ret; } -krb5_error_code KRB5_LIB_FUNCTION +KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL krb5_rd_safe(krb5_context context, krb5_auth_context auth_context, const krb5_data *inbuf, @@ -93,33 +91,39 @@ krb5_rd_safe(krb5_context context, KRB_SAFE safe; size_t len; - if (outbuf) - krb5_data_zero(outbuf); + krb5_data_zero(outbuf); - if ((auth_context->flags & - (KRB5_AUTH_CONTEXT_RET_TIME | KRB5_AUTH_CONTEXT_RET_SEQUENCE)) && - outdata == NULL) { - krb5_set_error_string(context, "rd_safe: need outdata to return data"); - return KRB5_RC_REQUIRED; /* XXX better error, MIT returns this */ + if ((auth_context->flags & + (KRB5_AUTH_CONTEXT_RET_TIME | KRB5_AUTH_CONTEXT_RET_SEQUENCE))) + { + if (outdata == NULL) { + krb5_set_error_message(context, KRB5_RC_REQUIRED, + N_("rd_safe: need outdata " + "to return data", "")); + return KRB5_RC_REQUIRED; /* XXX better error, MIT returns this */ + } + /* if these fields are not present in the safe-part, silently + return zero */ + memset(outdata, 0, sizeof(*outdata)); } ret = decode_KRB_SAFE (inbuf->data, inbuf->length, &safe, &len); - if (ret) + if (ret) return ret; if (safe.pvno != 5) { ret = KRB5KRB_AP_ERR_BADVERSION; - krb5_clear_error_string (context); + krb5_clear_error_message (context); goto failure; } if (safe.msg_type != krb_safe) { ret = KRB5KRB_AP_ERR_MSG_TYPE; - krb5_clear_error_string (context); + krb5_clear_error_message (context); goto failure; } if (!krb5_checksum_is_keyed(context, safe.cksum.cksumtype) || !krb5_checksum_is_collision_proof(context, safe.cksum.cksumtype)) { ret = KRB5KRB_AP_ERR_INAPP_CKSUM; - krb5_clear_error_string (context); + krb5_clear_error_message (context); goto failure; } @@ -131,7 +135,7 @@ krb5_rd_safe(krb5_context context, auth_context->remote_address, safe.safe_body.s_address)) { ret = KRB5KRB_AP_ERR_BADADDR; - krb5_clear_error_string (context); + krb5_clear_error_message (context); goto failure; } @@ -143,7 +147,7 @@ krb5_rd_safe(krb5_context context, auth_context->local_address, safe.safe_body.r_address)) { ret = KRB5KRB_AP_ERR_BADADDR; - krb5_clear_error_string (context); + krb5_clear_error_message (context); goto failure; } @@ -157,7 +161,7 @@ krb5_rd_safe(krb5_context context, safe.safe_body.usec == NULL || abs(*safe.safe_body.timestamp - sec) > context->max_skew) { ret = KRB5KRB_AP_ERR_SKEW; - krb5_clear_error_string (context); + krb5_clear_error_message (context); goto failure; } } @@ -174,7 +178,7 @@ krb5_rd_safe(krb5_context context, && *safe.safe_body.seq_number != auth_context->remote_seqnumber)) { ret = KRB5KRB_AP_ERR_BADORDER; - krb5_clear_error_string (context); + krb5_clear_error_message (context); goto failure; } auth_context->remote_seqnumber++; @@ -183,22 +187,20 @@ krb5_rd_safe(krb5_context context, ret = verify_checksum (context, auth_context, &safe); if (ret) goto failure; - + outbuf->length = safe.safe_body.user_data.length; outbuf->data = malloc(outbuf->length); if (outbuf->data == NULL && outbuf->length != 0) { ret = ENOMEM; - krb5_set_error_string (context, "malloc: out of memory"); + krb5_set_error_message(context, ret, N_("malloc: out of memory", "")); krb5_data_zero(outbuf); goto failure; } memcpy (outbuf->data, safe.safe_body.user_data.data, outbuf->length); - if ((auth_context->flags & + if ((auth_context->flags & (KRB5_AUTH_CONTEXT_RET_TIME | KRB5_AUTH_CONTEXT_RET_SEQUENCE))) { - /* if these fields are not present in the safe-part, silently - return zero */ - memset(outdata, 0, sizeof(*outdata)); + if(safe.safe_body.timestamp) outdata->timestamp = *safe.safe_body.timestamp; if(safe.safe_body.usec) |