13518ccd7d
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@21498 ec53bebd-3082-4978-b11e-865c3cabbd6b
898 lines
21 KiB
C
898 lines
21 KiB
C
/*
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* Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5_locl.h"
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RCSID("$Id$");
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/*
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* Add a new ccache type with operations `ops', overwriting any
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* existing one if `override'.
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* Return an error code or 0.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_register(krb5_context context,
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const krb5_cc_ops *ops,
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krb5_boolean override)
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{
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int i;
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for(i = 0; i < context->num_cc_ops && context->cc_ops[i].prefix; i++) {
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if(strcmp(context->cc_ops[i].prefix, ops->prefix) == 0) {
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if(!override) {
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krb5_set_error_string(context,
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"ccache type %s already exists",
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ops->prefix);
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return KRB5_CC_TYPE_EXISTS;
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}
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break;
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}
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}
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if(i == context->num_cc_ops) {
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krb5_cc_ops *o = realloc(context->cc_ops,
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(context->num_cc_ops + 1) *
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sizeof(*context->cc_ops));
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if(o == NULL) {
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krb5_set_error_string(context, "malloc: out of memory");
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return KRB5_CC_NOMEM;
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}
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context->num_cc_ops++;
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context->cc_ops = o;
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memset(context->cc_ops + i, 0,
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(context->num_cc_ops - i) * sizeof(*context->cc_ops));
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}
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memcpy(&context->cc_ops[i], ops, sizeof(context->cc_ops[i]));
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return 0;
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}
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/*
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* Allocate the memory for a `id' and the that function table to
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* `ops'. Returns 0 or and error code.
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*/
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krb5_error_code
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_krb5_cc_allocate(krb5_context context,
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const krb5_cc_ops *ops,
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krb5_ccache *id)
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{
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krb5_ccache p;
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p = malloc (sizeof(*p));
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if(p == NULL) {
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krb5_set_error_string(context, "malloc: out of memory");
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return KRB5_CC_NOMEM;
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}
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p->ops = ops;
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*id = p;
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return 0;
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}
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/*
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* Allocate memory for a new ccache in `id' with operations `ops'
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* and name `residual'.
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* Return 0 or an error code.
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*/
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static krb5_error_code
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allocate_ccache (krb5_context context,
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const krb5_cc_ops *ops,
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const char *residual,
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krb5_ccache *id)
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{
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krb5_error_code ret;
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ret = _krb5_cc_allocate(context, ops, id);
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if (ret)
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return ret;
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ret = (*id)->ops->resolve(context, id, residual);
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if(ret)
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free(*id);
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return ret;
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}
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/*
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* Find and allocate a ccache in `id' from the specification in `residual'.
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* If the ccache name doesn't contain any colon, interpret it as a file name.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_resolve(krb5_context context,
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const char *name,
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krb5_ccache *id)
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{
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int i;
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for(i = 0; i < context->num_cc_ops && context->cc_ops[i].prefix; i++) {
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size_t prefix_len = strlen(context->cc_ops[i].prefix);
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if(strncmp(context->cc_ops[i].prefix, name, prefix_len) == 0
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&& name[prefix_len] == ':') {
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return allocate_ccache (context, &context->cc_ops[i],
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name + prefix_len + 1,
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id);
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}
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}
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if (strchr (name, ':') == NULL)
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return allocate_ccache (context, &krb5_fcc_ops, name, id);
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else {
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krb5_set_error_string(context, "unknown ccache type %s", name);
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return KRB5_CC_UNKNOWN_TYPE;
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}
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}
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/*
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* Generate a new ccache of type `ops' in `id'.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_gen_new(krb5_context context,
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const krb5_cc_ops *ops,
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krb5_ccache *id)
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{
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krb5_error_code ret;
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ret = _krb5_cc_allocate(context, ops, id);
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if (ret)
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return ret;
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return (*id)->ops->gen_new(context, id);
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}
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/*
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* Generates a new unique ccache of `type` in `id'. If `type' is NULL,
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* the library chooses the default credential cache type. The supplied
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* `hint' (that can be NULL) is a string that the credential cache
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* type can use to base the name of the credential on, this is to make
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* its easier for the user to differentiate the credentials.
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*
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* Returns 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_new_unique(krb5_context context, const char *type,
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const char *hint, krb5_ccache *id)
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{
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const krb5_cc_ops *ops;
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if (type == NULL)
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type = KRB5_DEFAULT_CCNAME;
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ops = krb5_cc_get_prefix_ops(context, type);
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if (ops == NULL) {
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krb5_set_error_string(context, "Credential cache type %s is unknown",
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type);
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return KRB5_CC_UNKNOWN_TYPE;
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}
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return krb5_cc_gen_new(context, ops, id);
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}
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/*
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* Return the name of the ccache `id'
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*/
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const char* KRB5_LIB_FUNCTION
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krb5_cc_get_name(krb5_context context,
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krb5_ccache id)
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{
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return id->ops->get_name(context, id);
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}
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/*
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* Return the type of the ccache `id'.
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*/
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const char* KRB5_LIB_FUNCTION
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krb5_cc_get_type(krb5_context context,
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krb5_ccache id)
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{
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return id->ops->prefix;
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}
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/*
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* Return the complete resolvable name the ccache `id' in `str´.
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* `str` should be freed with free(3).
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* Returns 0 or an error (and then *str is set to NULL).
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_get_full_name(krb5_context context,
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krb5_ccache id,
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char **str)
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{
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const char *type, *name;
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*str = NULL;
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type = krb5_cc_get_type(context, id);
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if (type == NULL) {
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krb5_set_error_string(context, "cache have no name of type");
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return KRB5_CC_UNKNOWN_TYPE;
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}
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name = krb5_cc_get_name(context, id);
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if (name == NULL) {
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krb5_set_error_string(context, "cache of type %s have no name", type);
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return KRB5_CC_BADNAME;
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}
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if (asprintf(str, "%s:%s", type, name) == -1) {
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krb5_set_error_string(context, "malloc - out of memory");
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*str = NULL;
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return ENOMEM;
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}
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return 0;
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}
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/*
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* Return krb5_cc_ops of a the ccache `id'.
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*/
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const krb5_cc_ops *
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krb5_cc_get_ops(krb5_context context, krb5_ccache id)
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{
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return id->ops;
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}
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/*
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* Expand variables in `str' into `res'
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*/
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krb5_error_code
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_krb5_expand_default_cc_name(krb5_context context, const char *str, char **res)
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{
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size_t tlen, len = 0;
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char *tmp, *tmp2, *append;
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*res = NULL;
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while (str && *str) {
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tmp = strstr(str, "%{");
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if (tmp && tmp != str) {
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append = malloc((tmp - str) + 1);
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if (append) {
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memcpy(append, str, tmp - str);
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append[tmp - str] = '\0';
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}
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str = tmp;
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} else if (tmp) {
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tmp2 = strchr(tmp, '}');
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if (tmp2 == NULL) {
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free(*res);
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*res = NULL;
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krb5_set_error_string(context, "variable missing }");
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return KRB5_CONFIG_BADFORMAT;
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}
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if (strncasecmp(tmp, "%{uid}", 6) == 0)
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asprintf(&append, "%u", (unsigned)getuid());
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else if (strncasecmp(tmp, "%{null}", 7) == 0)
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append = strdup("");
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else {
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free(*res);
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*res = NULL;
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krb5_set_error_string(context,
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"expand default cache unknown "
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"variable \"%.*s\"",
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(int)(tmp2 - tmp) - 2, tmp + 2);
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return KRB5_CONFIG_BADFORMAT;
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}
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str = tmp2 + 1;
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} else {
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append = strdup(str);
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str = NULL;
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}
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if (append == NULL) {
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free(*res);
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*res = NULL;
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krb5_set_error_string(context, "malloc - out of memory");
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return ENOMEM;
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}
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tlen = strlen(append);
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tmp = realloc(*res, len + tlen + 1);
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if (tmp == NULL) {
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free(append);
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free(*res);
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*res = NULL;
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krb5_set_error_string(context, "malloc - out of memory");
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return ENOMEM;
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}
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*res = tmp;
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memcpy(*res + len, append, tlen + 1);
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len = len + tlen;
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free(append);
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}
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return 0;
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}
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/*
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* Return non-zero if envirnoment that will determine default krb5cc
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* name has changed.
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*/
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static int
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environment_changed(krb5_context context)
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{
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const char *e;
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if(issuid())
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return 0;
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e = getenv("KRB5CCNAME");
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if (e == NULL) {
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if (context->default_cc_name_env) {
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free(context->default_cc_name_env);
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context->default_cc_name_env = NULL;
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return 1;
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}
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} else {
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if (context->default_cc_name_env == NULL)
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return 1;
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if (strcmp(e, context->default_cc_name_env) != 0)
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return 1;
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}
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return 0;
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}
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/*
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* Set the default cc name for `context' to `name'.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_set_default_name(krb5_context context, const char *name)
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{
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krb5_error_code ret = 0;
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char *p;
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if (name == NULL) {
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const char *e = NULL;
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if(!issuid()) {
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e = getenv("KRB5CCNAME");
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if (e) {
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p = strdup(e);
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if (context->default_cc_name_env)
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free(context->default_cc_name_env);
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context->default_cc_name_env = strdup(e);
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}
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}
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if (e == NULL) {
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e = krb5_config_get_string(context, NULL, "libdefaults",
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"default_cc_name", NULL);
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if (e == NULL)
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e = KRB5_DEFAULT_CCNAME;
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ret = _krb5_expand_default_cc_name(context, e, &p);
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if (ret)
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return ret;
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}
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} else
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p = strdup(name);
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if (p == NULL) {
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krb5_set_error_string(context, "malloc - out of memory");
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return ENOMEM;
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}
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if (context->default_cc_name)
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free(context->default_cc_name);
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context->default_cc_name = p;
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return ret;
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}
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/*
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* Return a pointer to a context static string containing the default
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* ccache name.
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*/
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const char* KRB5_LIB_FUNCTION
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krb5_cc_default_name(krb5_context context)
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{
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if (context->default_cc_name == NULL || environment_changed(context))
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krb5_cc_set_default_name(context, NULL);
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return context->default_cc_name;
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}
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/*
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* Open the default ccache in `id'.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_default(krb5_context context,
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krb5_ccache *id)
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{
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const char *p = krb5_cc_default_name(context);
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if (p == NULL) {
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krb5_set_error_string(context, "malloc - out of memory");
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return ENOMEM;
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}
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return krb5_cc_resolve(context, p, id);
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}
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/*
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* Create a new ccache in `id' for `primary_principal'.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_initialize(krb5_context context,
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krb5_ccache id,
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krb5_principal primary_principal)
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{
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return (*id->ops->init)(context, id, primary_principal);
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}
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/*
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* Remove the ccache `id'.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_destroy(krb5_context context,
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krb5_ccache id)
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{
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krb5_error_code ret;
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ret = (*id->ops->destroy)(context, id);
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krb5_cc_close (context, id);
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return ret;
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}
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/*
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* Stop using the ccache `id' and free the related resources.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_close(krb5_context context,
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krb5_ccache id)
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{
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krb5_error_code ret;
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ret = (*id->ops->close)(context, id);
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free(id);
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return ret;
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}
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/*
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* Store `creds' in the ccache `id'.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_store_cred(krb5_context context,
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krb5_ccache id,
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krb5_creds *creds)
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{
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return (*id->ops->store)(context, id, creds);
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}
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/*
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* Retrieve the credential identified by `mcreds' (and `whichfields')
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* from `id' in `creds'. 'creds' must be free by the caller using
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* krb5_free_cred_contents.
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* Return 0 or an error code.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_cc_retrieve_cred(krb5_context context,
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krb5_ccache id,
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krb5_flags whichfields,
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const krb5_creds *mcreds,
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krb5_creds *creds)
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{
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krb5_error_code ret;
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krb5_cc_cursor cursor;
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if (id->ops->retrieve != NULL) {
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return (*id->ops->retrieve)(context, id, whichfields,
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mcreds, creds);
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}
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krb5_cc_start_seq_get(context, id, &cursor);
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while((ret = krb5_cc_next_cred(context, id, &cursor, creds)) == 0){
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if(krb5_compare_creds(context, whichfields, mcreds, creds)){
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ret = 0;
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break;
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}
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krb5_free_cred_contents (context, creds);
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}
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krb5_cc_end_seq_get(context, id, &cursor);
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return ret;
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}
|
||
|
||
/*
|
||
* Return the principal of `id' in `principal'.
|
||
* Return 0 or an error code.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_get_principal(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_principal *principal)
|
||
{
|
||
return (*id->ops->get_princ)(context, id, principal);
|
||
}
|
||
|
||
/*
|
||
* Start iterating over `id', `cursor' is initialized to the
|
||
* beginning.
|
||
* Return 0 or an error code.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_start_seq_get (krb5_context context,
|
||
const krb5_ccache id,
|
||
krb5_cc_cursor *cursor)
|
||
{
|
||
return (*id->ops->get_first)(context, id, cursor);
|
||
}
|
||
|
||
/*
|
||
* Retrieve the next cred pointed to by (`id', `cursor') in `creds'
|
||
* and advance `cursor'.
|
||
* Return 0 or an error code.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_next_cred (krb5_context context,
|
||
const krb5_ccache id,
|
||
krb5_cc_cursor *cursor,
|
||
krb5_creds *creds)
|
||
{
|
||
return (*id->ops->get_next)(context, id, cursor, creds);
|
||
}
|
||
|
||
/* like krb5_cc_next_cred, but allow for selective retrieval */
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_next_cred_match(krb5_context context,
|
||
const krb5_ccache id,
|
||
krb5_cc_cursor * cursor,
|
||
krb5_creds * creds,
|
||
krb5_flags whichfields,
|
||
const krb5_creds * mcreds)
|
||
{
|
||
krb5_error_code ret;
|
||
while (1) {
|
||
ret = krb5_cc_next_cred(context, id, cursor, creds);
|
||
if (ret)
|
||
return ret;
|
||
if (mcreds == NULL || krb5_compare_creds(context, whichfields, mcreds, creds))
|
||
return 0;
|
||
krb5_free_cred_contents(context, creds);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Destroy the cursor `cursor'.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_end_seq_get (krb5_context context,
|
||
const krb5_ccache id,
|
||
krb5_cc_cursor *cursor)
|
||
{
|
||
return (*id->ops->end_get)(context, id, cursor);
|
||
}
|
||
|
||
/*
|
||
* Remove the credential identified by `cred', `which' from `id'.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_remove_cred(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_flags which,
|
||
krb5_creds *cred)
|
||
{
|
||
if(id->ops->remove_cred == NULL) {
|
||
krb5_set_error_string(context,
|
||
"ccache %s does not support remove_cred",
|
||
id->ops->prefix);
|
||
return EACCES; /* XXX */
|
||
}
|
||
return (*id->ops->remove_cred)(context, id, which, cred);
|
||
}
|
||
|
||
/*
|
||
* Set the flags of `id' to `flags'.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_set_flags(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_flags flags)
|
||
{
|
||
return (*id->ops->set_flags)(context, id, flags);
|
||
}
|
||
|
||
/*
|
||
* Copy the contents of `from' to `to'.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_copy_cache_match(krb5_context context,
|
||
const krb5_ccache from,
|
||
krb5_ccache to,
|
||
krb5_flags whichfields,
|
||
const krb5_creds * mcreds,
|
||
unsigned int *matched)
|
||
{
|
||
krb5_error_code ret;
|
||
krb5_cc_cursor cursor;
|
||
krb5_creds cred;
|
||
krb5_principal princ;
|
||
|
||
ret = krb5_cc_get_principal(context, from, &princ);
|
||
if (ret)
|
||
return ret;
|
||
ret = krb5_cc_initialize(context, to, princ);
|
||
if (ret) {
|
||
krb5_free_principal(context, princ);
|
||
return ret;
|
||
}
|
||
ret = krb5_cc_start_seq_get(context, from, &cursor);
|
||
if (ret) {
|
||
krb5_free_principal(context, princ);
|
||
return ret;
|
||
}
|
||
if (matched)
|
||
*matched = 0;
|
||
while (ret == 0 &&
|
||
krb5_cc_next_cred_match(context, from, &cursor, &cred,
|
||
whichfields, mcreds) == 0) {
|
||
if (matched)
|
||
(*matched)++;
|
||
ret = krb5_cc_store_cred(context, to, &cred);
|
||
krb5_free_cred_contents(context, &cred);
|
||
}
|
||
krb5_cc_end_seq_get(context, from, &cursor);
|
||
krb5_free_principal(context, princ);
|
||
return ret;
|
||
}
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_copy_cache(krb5_context context,
|
||
const krb5_ccache from,
|
||
krb5_ccache to)
|
||
{
|
||
return krb5_cc_copy_cache_match(context, from, to, 0, NULL, NULL);
|
||
}
|
||
|
||
/*
|
||
* Return the version of `id'.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_get_version(krb5_context context,
|
||
const krb5_ccache id)
|
||
{
|
||
if(id->ops->get_version)
|
||
return (*id->ops->get_version)(context, id);
|
||
else
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Clear `mcreds' so it can be used with krb5_cc_retrieve_cred
|
||
*/
|
||
|
||
void KRB5_LIB_FUNCTION
|
||
krb5_cc_clear_mcred(krb5_creds *mcred)
|
||
{
|
||
memset(mcred, 0, sizeof(*mcred));
|
||
}
|
||
|
||
/*
|
||
* Get the cc ops that is registered in `context' to handle the
|
||
* `prefix'. `prefix' can be a complete credential cache name or a
|
||
* prefix, the function will only use part up to the first colon (:)
|
||
* if there is one. Returns NULL if ops not found.
|
||
*/
|
||
|
||
const krb5_cc_ops *
|
||
krb5_cc_get_prefix_ops(krb5_context context, const char *prefix)
|
||
{
|
||
char *p, *p1;
|
||
int i;
|
||
|
||
if (prefix[0] == '/')
|
||
return &krb5_fcc_ops;
|
||
|
||
p = strdup(prefix);
|
||
if (p == NULL) {
|
||
krb5_set_error_string(context, "malloc - out of memory");
|
||
return NULL;
|
||
}
|
||
p1 = strchr(p, ':');
|
||
if (p1)
|
||
*p1 = '\0';
|
||
|
||
for(i = 0; i < context->num_cc_ops && context->cc_ops[i].prefix; i++) {
|
||
if(strcmp(context->cc_ops[i].prefix, p) == 0) {
|
||
free(p);
|
||
return &context->cc_ops[i];
|
||
}
|
||
}
|
||
free(p);
|
||
return NULL;
|
||
}
|
||
|
||
struct krb5_cc_cache_cursor_data {
|
||
const krb5_cc_ops *ops;
|
||
krb5_cc_cursor cursor;
|
||
};
|
||
|
||
/*
|
||
* Start iterating over all caches of `type'. If `type' is NULL, the
|
||
* default type is * used. `cursor' is initialized to the beginning.
|
||
* Return 0 or an error code.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_cache_get_first (krb5_context context,
|
||
const char *type,
|
||
krb5_cc_cache_cursor *cursor)
|
||
{
|
||
const krb5_cc_ops *ops;
|
||
krb5_error_code ret;
|
||
|
||
if (type == NULL)
|
||
type = krb5_cc_default_name(context);
|
||
|
||
ops = krb5_cc_get_prefix_ops(context, type);
|
||
if (ops == NULL) {
|
||
krb5_set_error_string(context, "Unknown type \"%s\" when iterating "
|
||
"trying to iterate the credential caches", type);
|
||
return KRB5_CC_UNKNOWN_TYPE;
|
||
}
|
||
|
||
if (ops->get_cache_first == NULL) {
|
||
krb5_set_error_string(context, "Credential cache type %s doesn't support "
|
||
"iterations over caches", ops->prefix);
|
||
return KRB5_CC_NOSUPP;
|
||
}
|
||
|
||
*cursor = calloc(1, sizeof(**cursor));
|
||
if (*cursor == NULL) {
|
||
krb5_set_error_string(context, "malloc - out of memory");
|
||
return ENOMEM;
|
||
}
|
||
|
||
(*cursor)->ops = ops;
|
||
|
||
ret = ops->get_cache_first(context, &(*cursor)->cursor);
|
||
if (ret) {
|
||
free(*cursor);
|
||
*cursor = NULL;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
/*
|
||
* Retrieve the next cache pointed to by (`cursor') in `id'
|
||
* and advance `cursor'.
|
||
* Return 0 or an error code.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_cache_next (krb5_context context,
|
||
krb5_cc_cache_cursor cursor,
|
||
krb5_ccache *id)
|
||
{
|
||
return cursor->ops->get_cache_next(context, cursor->cursor, id);
|
||
}
|
||
|
||
/*
|
||
* Destroy the cursor `cursor'.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_cache_end_seq_get (krb5_context context,
|
||
krb5_cc_cache_cursor cursor)
|
||
{
|
||
krb5_error_code ret;
|
||
ret = cursor->ops->end_cache_get(context, cursor->cursor);
|
||
cursor->ops = NULL;
|
||
free(cursor);
|
||
return ret;
|
||
}
|
||
|
||
/*
|
||
* Search for a matching credential cache of type `type' that have the
|
||
* `principal' as the default principal. If NULL is used for `type',
|
||
* the default type is used. On success, `id' needs to be freed with
|
||
* krb5_cc_close or krb5_cc_destroy. On failure, error code is
|
||
* returned and `id' is set to NULL.
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_cache_match (krb5_context context,
|
||
krb5_principal client,
|
||
const char *type,
|
||
krb5_ccache *id)
|
||
{
|
||
krb5_cc_cache_cursor cursor;
|
||
krb5_error_code ret;
|
||
krb5_ccache cache = NULL;
|
||
|
||
*id = NULL;
|
||
|
||
ret = krb5_cc_cache_get_first (context, type, &cursor);
|
||
if (ret)
|
||
return ret;
|
||
|
||
while ((ret = krb5_cc_cache_next (context, cursor, &cache)) == 0) {
|
||
krb5_principal principal;
|
||
|
||
ret = krb5_cc_get_principal(context, cache, &principal);
|
||
if (ret == 0) {
|
||
krb5_boolean match;
|
||
|
||
match = krb5_principal_compare(context, principal, client);
|
||
krb5_free_principal(context, principal);
|
||
if (match)
|
||
break;
|
||
}
|
||
|
||
krb5_cc_close(context, cache);
|
||
cache = NULL;
|
||
}
|
||
|
||
krb5_cc_cache_end_seq_get(context, cursor);
|
||
|
||
if (cache == NULL) {
|
||
char *str;
|
||
|
||
krb5_unparse_name(context, client, &str);
|
||
|
||
krb5_set_error_string(context, "Principal %s not found in a "
|
||
"credential cache", str ? str : "<out of memory>");
|
||
if (str)
|
||
free(str);
|
||
return KRB5_CC_NOTFOUND;
|
||
}
|
||
*id = cache;
|
||
|
||
return 0;
|
||
}
|
||
|