be699eb984
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23924 ec53bebd-3082-4978-b11e-865c3cabbd6b
1490 lines
34 KiB
C
1490 lines
34 KiB
C
/*
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* Copyright (c) 1997 - 2008 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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*
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* @param context a Keberos context
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* @param ops type of plugin symbol
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* @param override flag to select if the registration is to overide
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* an existing ops with the same name.
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*
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* @return Return an error code or 0, see krb5_get_error_message().
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*
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* @ingroup krb5_ccache
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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_message(context,
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KRB5_CC_TYPE_EXISTS,
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N_("cache type %s already exists", "type"),
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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_message(context, KRB5_CC_NOMEM,
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N_("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_message(context, KRB5_CC_NOMEM,
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N_("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'. 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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*
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* @param context a Keberos context.
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* @param name string name of a credential cache.
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* @param id return pointer to a found credential cache.
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*
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* @return Return 0 or an error code. In case of an error, id is set
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* to NULL, see krb5_get_error_message().
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*
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* @ingroup krb5_ccache
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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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*id = NULL;
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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_message(context, KRB5_CC_UNKNOWN_TYPE,
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N_("unknown ccache type %s", "name"), 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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*
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* @return Return an error code or 0, see krb5_get_error_message().
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*
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* @ingroup krb5_ccache
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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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return krb5_cc_new_unique(context, ops->prefix, NULL, 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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* it easier for the user to differentiate the credentials.
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*
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* @return Return an error code or 0, see krb5_get_error_message().
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*
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* @ingroup krb5_ccache
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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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krb5_error_code ret;
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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_message(context, KRB5_CC_UNKNOWN_TYPE,
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"Credential cache type %s is unknown", type);
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return KRB5_CC_UNKNOWN_TYPE;
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}
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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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* Return the name of the ccache `id'
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*
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* @ingroup krb5_ccache
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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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* @ingroup krb5_ccache
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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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* @ingroup krb5_ccache
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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_message(context, KRB5_CC_UNKNOWN_TYPE,
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"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_message(context, KRB5_CC_BADNAME,
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"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_message(context, ENOMEM, N_("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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* @ingroup krb5_ccache
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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_message(context, KRB5_CONFIG_BADFORMAT,
|
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"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_message(context,
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KRB5_CONFIG_BADFORMAT,
|
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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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if (append == NULL) {
|
||
free(*res);
|
||
*res = NULL;
|
||
krb5_set_error_message(context, ENOMEM,
|
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N_("malloc: out of memory", ""));
|
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return ENOMEM;
|
||
}
|
||
|
||
tlen = strlen(append);
|
||
tmp = realloc(*res, len + tlen + 1);
|
||
if (tmp == NULL) {
|
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free(append);
|
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free(*res);
|
||
*res = NULL;
|
||
krb5_set_error_message(context, ENOMEM,
|
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N_("malloc: out of memory", ""));
|
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return ENOMEM;
|
||
}
|
||
*res = tmp;
|
||
memcpy(*res + len, append, tlen + 1);
|
||
len = len + tlen;
|
||
free(append);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Return non-zero if envirnoment that will determine default krb5cc
|
||
* name has changed.
|
||
*/
|
||
|
||
static int
|
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environment_changed(krb5_context context)
|
||
{
|
||
const char *e;
|
||
|
||
/* if the cc name was set, don't change it */
|
||
if (context->default_cc_name_set)
|
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return 0;
|
||
|
||
if(issuid())
|
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return 0;
|
||
|
||
e = getenv("KRB5CCNAME");
|
||
if (e == NULL) {
|
||
if (context->default_cc_name_env) {
|
||
free(context->default_cc_name_env);
|
||
context->default_cc_name_env = NULL;
|
||
return 1;
|
||
}
|
||
} else {
|
||
if (context->default_cc_name_env == NULL)
|
||
return 1;
|
||
if (strcmp(e, context->default_cc_name_env) != 0)
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* Switch the default default credential cache for a specific
|
||
* credcache type (and name for some implementations).
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code
|
||
krb5_cc_switch(krb5_context context, krb5_ccache id)
|
||
{
|
||
|
||
if (id->ops->set_default == NULL)
|
||
return 0;
|
||
|
||
return (*id->ops->set_default)(context, id);
|
||
}
|
||
|
||
/**
|
||
* Set the default cc name for `context' to `name'.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_set_default_name(krb5_context context, const char *name)
|
||
{
|
||
krb5_error_code ret = 0;
|
||
char *p;
|
||
|
||
if (name == NULL) {
|
||
const char *e = NULL;
|
||
|
||
if(!issuid()) {
|
||
e = getenv("KRB5CCNAME");
|
||
if (e) {
|
||
p = strdup(e);
|
||
if (context->default_cc_name_env)
|
||
free(context->default_cc_name_env);
|
||
context->default_cc_name_env = strdup(e);
|
||
}
|
||
}
|
||
if (e == NULL) {
|
||
e = krb5_config_get_string(context, NULL, "libdefaults",
|
||
"default_cc_name", NULL);
|
||
if (e) {
|
||
ret = _krb5_expand_default_cc_name(context, e, &p);
|
||
if (ret)
|
||
return ret;
|
||
}
|
||
if (e == NULL) {
|
||
const krb5_cc_ops *ops = KRB5_DEFAULT_CCTYPE;
|
||
e = krb5_config_get_string(context, NULL, "libdefaults",
|
||
"default_cc_type", NULL);
|
||
if (e) {
|
||
ops = krb5_cc_get_prefix_ops(context, e);
|
||
if (ops == NULL) {
|
||
krb5_set_error_message(context,
|
||
KRB5_CC_UNKNOWN_TYPE,
|
||
"Credential cache type %s "
|
||
"is unknown", e);
|
||
return KRB5_CC_UNKNOWN_TYPE;
|
||
}
|
||
}
|
||
ret = (*ops->get_default_name)(context, &p);
|
||
if (ret)
|
||
return ret;
|
||
}
|
||
}
|
||
context->default_cc_name_set = 0;
|
||
} else {
|
||
p = strdup(name);
|
||
context->default_cc_name_set = 1;
|
||
}
|
||
|
||
if (p == NULL) {
|
||
krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
|
||
return ENOMEM;
|
||
}
|
||
|
||
if (context->default_cc_name)
|
||
free(context->default_cc_name);
|
||
|
||
context->default_cc_name = p;
|
||
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* Return a pointer to a context static string containing the default
|
||
* ccache name.
|
||
*
|
||
* @return String to the default credential cache name.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
const char* KRB5_LIB_FUNCTION
|
||
krb5_cc_default_name(krb5_context context)
|
||
{
|
||
if (context->default_cc_name == NULL || environment_changed(context))
|
||
krb5_cc_set_default_name(context, NULL);
|
||
|
||
return context->default_cc_name;
|
||
}
|
||
|
||
/**
|
||
* Open the default ccache in `id'.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_default(krb5_context context,
|
||
krb5_ccache *id)
|
||
{
|
||
const char *p = krb5_cc_default_name(context);
|
||
|
||
if (p == NULL) {
|
||
krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
|
||
return ENOMEM;
|
||
}
|
||
return krb5_cc_resolve(context, p, id);
|
||
}
|
||
|
||
/**
|
||
* Create a new ccache in `id' for `primary_principal'.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_initialize(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_principal primary_principal)
|
||
{
|
||
return (*id->ops->init)(context, id, primary_principal);
|
||
}
|
||
|
||
|
||
/**
|
||
* Remove the ccache `id'.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_destroy(krb5_context context,
|
||
krb5_ccache id)
|
||
{
|
||
krb5_error_code ret;
|
||
|
||
ret = (*id->ops->destroy)(context, id);
|
||
krb5_cc_close (context, id);
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* Stop using the ccache `id' and free the related resources.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_close(krb5_context context,
|
||
krb5_ccache id)
|
||
{
|
||
krb5_error_code ret;
|
||
ret = (*id->ops->close)(context, id);
|
||
free(id);
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* Store `creds' in the ccache `id'.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_store_cred(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_creds *creds)
|
||
{
|
||
return (*id->ops->store)(context, id, creds);
|
||
}
|
||
|
||
/**
|
||
* Retrieve the credential identified by `mcreds' (and `whichfields')
|
||
* from `id' in `creds'. 'creds' must be free by the caller using
|
||
* krb5_free_cred_contents.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_retrieve_cred(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_flags whichfields,
|
||
const krb5_creds *mcreds,
|
||
krb5_creds *creds)
|
||
{
|
||
krb5_error_code ret;
|
||
krb5_cc_cursor cursor;
|
||
|
||
if (id->ops->retrieve != NULL) {
|
||
return (*id->ops->retrieve)(context, id, whichfields,
|
||
mcreds, creds);
|
||
}
|
||
|
||
ret = krb5_cc_start_seq_get(context, id, &cursor);
|
||
if (ret)
|
||
return ret;
|
||
while((ret = krb5_cc_next_cred(context, id, &cursor, creds)) == 0){
|
||
if(krb5_compare_creds(context, whichfields, mcreds, creds)){
|
||
ret = 0;
|
||
break;
|
||
}
|
||
krb5_free_cred_contents (context, creds);
|
||
}
|
||
krb5_cc_end_seq_get(context, id, &cursor);
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* Return the principal of `id' in `principal'.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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 Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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 Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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'.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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'.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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_message(context,
|
||
EACCES,
|
||
"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'.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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);
|
||
}
|
||
|
||
/**
|
||
* Get the flags of `id', store them in `flags'.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_get_flags(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_flags *flags)
|
||
{
|
||
*flags = 0;
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* Copy the contents of `from' to `to'.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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;
|
||
}
|
||
|
||
|
||
/**
|
||
* Just like krb5_cc_copy_cache_match, but copy everything.
|
||
*
|
||
* @ingroup @krb5_ccache
|
||
*/
|
||
|
||
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);
|
||
}
|
||
|
||
/**
|
||
* MIT compat glue
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_copy_creds(krb5_context context,
|
||
const krb5_ccache from,
|
||
krb5_ccache to)
|
||
{
|
||
return krb5_cc_copy_cache(context, from, to);
|
||
}
|
||
|
||
/**
|
||
* Return the version of `id'.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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. If prefix the argument is NULL, the default ccache
|
||
* implemtation is returned.
|
||
*
|
||
* @return Returns NULL if ops not found.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
const krb5_cc_ops *
|
||
krb5_cc_get_prefix_ops(krb5_context context, const char *prefix)
|
||
{
|
||
char *p, *p1;
|
||
int i;
|
||
|
||
if (prefix == NULL)
|
||
return KRB5_DEFAULT_CCTYPE;
|
||
if (prefix[0] == '/')
|
||
return &krb5_fcc_ops;
|
||
|
||
p = strdup(prefix);
|
||
if (p == NULL) {
|
||
krb5_set_error_message(context, ENOMEM, N_("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 specified type. See also
|
||
* krb5_cccol_cursor_new().
|
||
|
||
* @param context A Kerberos 5 context
|
||
* @param type optional type to iterate over, if NULL, the default cache is used.
|
||
* @param cursor cursor should be freed with krb5_cc_cache_end_seq_get().
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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_message(context, KRB5_CC_UNKNOWN_TYPE,
|
||
"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_message(context, KRB5_CC_NOSUPP,
|
||
N_("Credential cache type %s doesn't support "
|
||
"iterations over caches", "type"),
|
||
ops->prefix);
|
||
return KRB5_CC_NOSUPP;
|
||
}
|
||
|
||
*cursor = calloc(1, sizeof(**cursor));
|
||
if (*cursor == NULL) {
|
||
krb5_set_error_message(context, ENOMEM, N_("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 Return 0 or an error code. Returns KRB5_CC_END when the end
|
||
* of caches is reached, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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'.
|
||
*
|
||
* @return Return an error code or 0, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
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. On success, `id' needs to be
|
||
* freed with krb5_cc_close() or krb5_cc_destroy().
|
||
*
|
||
* @return On failure, error code is returned and `id' is set to NULL.
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_cache_match (krb5_context context,
|
||
krb5_principal client,
|
||
krb5_ccache *id)
|
||
{
|
||
krb5_cccol_cursor cursor;
|
||
krb5_error_code ret;
|
||
krb5_ccache cache = NULL;
|
||
|
||
*id = NULL;
|
||
|
||
ret = krb5_cccol_cursor_new (context, &cursor);
|
||
if (ret)
|
||
return ret;
|
||
|
||
while ((ret = krb5_cccol_cursor_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_cccol_cursor_free(context, &cursor);
|
||
|
||
if (cache == NULL) {
|
||
char *str;
|
||
|
||
krb5_unparse_name(context, client, &str);
|
||
|
||
krb5_set_error_message(context, KRB5_CC_NOTFOUND,
|
||
N_("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;
|
||
}
|
||
|
||
/**
|
||
* Move the content from one credential cache to another. The
|
||
* operation is an atomic switch.
|
||
*
|
||
* @param context a Keberos context
|
||
* @param from the credential cache to move the content from
|
||
* @param to the credential cache to move the content to
|
||
|
||
* @return On sucess, from is freed. On failure, error code is
|
||
* returned and from and to are both still allocated, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code
|
||
krb5_cc_move(krb5_context context, krb5_ccache from, krb5_ccache to)
|
||
{
|
||
krb5_error_code ret;
|
||
|
||
if (strcmp(from->ops->prefix, to->ops->prefix) != 0) {
|
||
krb5_set_error_message(context, KRB5_CC_NOSUPP,
|
||
N_("Moving credentials between diffrent "
|
||
"types not yet supported", ""));
|
||
return KRB5_CC_NOSUPP;
|
||
}
|
||
|
||
ret = (*to->ops->move)(context, from, to);
|
||
if (ret == 0) {
|
||
memset(from, 0, sizeof(*from));
|
||
free(from);
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
#define KRB5_CONF_NAME "krb5_ccache_conf_data"
|
||
#define KRB5_REALM_NAME "X-CACHECONF:"
|
||
|
||
static krb5_error_code
|
||
build_conf_principals(krb5_context context, krb5_ccache id,
|
||
krb5_const_principal principal,
|
||
const char *name, krb5_creds *cred)
|
||
{
|
||
krb5_principal client;
|
||
krb5_error_code ret;
|
||
char *pname = NULL;
|
||
|
||
memset(cred, 0, sizeof(*cred));
|
||
|
||
ret = krb5_cc_get_principal(context, id, &client);
|
||
if (ret)
|
||
return ret;
|
||
|
||
if (principal) {
|
||
ret = krb5_unparse_name(context, principal, &pname);
|
||
if (ret)
|
||
return ret;
|
||
}
|
||
|
||
ret = krb5_make_principal(context, &cred->server,
|
||
krb5_principal_get_realm(context, client),
|
||
KRB5_CONF_NAME, name, pname, NULL);
|
||
free(pname);
|
||
if (ret) {
|
||
krb5_free_principal(context, client);
|
||
return ret;
|
||
}
|
||
ret = krb5_copy_principal(context, client, &cred->client);
|
||
krb5_free_principal(context, client);
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* Return TRUE (non zero) if the principal is a configuration
|
||
* principal (generated part of krb5_cc_set_config()). Returns FALSE
|
||
* (zero) if not a configuration principal.
|
||
*
|
||
* @param context a Keberos context
|
||
* @param principal principal to check if it a configuration principal
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_boolean KRB5_LIB_FUNCTION
|
||
krb5_is_config_principal(krb5_context context,
|
||
krb5_const_principal principal)
|
||
{
|
||
if (strcmp(principal->realm, KRB5_REALM_NAME) != 0)
|
||
return FALSE;
|
||
|
||
if (principal->name.name_string.len == 0 ||
|
||
strcmp(principal->name.name_string.val[0], KRB5_CONF_NAME) != 0)
|
||
return FALSE;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/**
|
||
* Store some configuration for the credential cache in the cache.
|
||
* Existing configuration under the same name is over-written.
|
||
*
|
||
* @param context a Keberos context
|
||
* @param id the credential cache to store the data for
|
||
* @param principal configuration for a specific principal, if
|
||
* NULL, global for the whole cache.
|
||
* @param name name under which the configuraion is stored.
|
||
* @param data data to store
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_set_config(krb5_context context, krb5_ccache id,
|
||
krb5_const_principal principal,
|
||
const char *name, krb5_data *data)
|
||
{
|
||
krb5_error_code ret;
|
||
krb5_creds cred;
|
||
|
||
ret = build_conf_principals(context, id, principal, name, &cred);
|
||
if (ret)
|
||
goto out;
|
||
|
||
/* Remove old configuration */
|
||
ret = krb5_cc_remove_cred(context, id, 0, &cred);
|
||
if (ret && ret != KRB5_CC_NOTFOUND)
|
||
goto out;
|
||
|
||
/* not that anyone care when this expire */
|
||
cred.times.authtime = time(NULL);
|
||
cred.times.endtime = cred.times.authtime + 3600 * 24 * 30;
|
||
|
||
ret = krb5_data_copy(&cred.ticket, data->data, data->length);
|
||
if (ret)
|
||
goto out;
|
||
|
||
ret = krb5_cc_store_cred(context, id, &cred);
|
||
|
||
out:
|
||
krb5_free_cred_contents (context, &cred);
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* Get some configuration for the credential cache in the cache.
|
||
*
|
||
* @param context a Keberos context
|
||
* @param id the credential cache to store the data for
|
||
* @param principal configuration for a specific principal, if
|
||
* NULL, global for the whole cache.
|
||
* @param name name under which the configuraion is stored.
|
||
* @param data data to fetched, free with krb5_data_free()
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_get_config(krb5_context context, krb5_ccache id,
|
||
krb5_const_principal principal,
|
||
const char *name, krb5_data *data)
|
||
{
|
||
krb5_creds mcred, cred;
|
||
krb5_error_code ret;
|
||
|
||
memset(&cred, 0, sizeof(cred));
|
||
krb5_data_zero(data);
|
||
|
||
ret = build_conf_principals(context, id, principal, name, &mcred);
|
||
if (ret)
|
||
goto out;
|
||
|
||
ret = krb5_cc_retrieve_cred(context, id, 0, &mcred, &cred);
|
||
if (ret)
|
||
goto out;
|
||
|
||
ret = krb5_data_copy(data, cred.ticket.data, cred.ticket.length);
|
||
|
||
out:
|
||
krb5_free_cred_contents (context, &cred);
|
||
krb5_free_cred_contents (context, &mcred);
|
||
return ret;
|
||
}
|
||
|
||
/*
|
||
*
|
||
*/
|
||
|
||
struct krb5_cccol_cursor {
|
||
int idx;
|
||
krb5_cc_cache_cursor cursor;
|
||
};
|
||
|
||
/**
|
||
* Get a new cache interation cursor that will interate over all
|
||
* credentials caches independent of type.
|
||
*
|
||
* @param context a Keberos context
|
||
* @param cursor passed into krb5_cccol_cursor_next() and free with krb5_cccol_cursor_free().
|
||
*
|
||
* @return Returns 0 or and error code, see krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cccol_cursor_new(krb5_context context, krb5_cccol_cursor *cursor)
|
||
{
|
||
*cursor = calloc(1, sizeof(**cursor));
|
||
if (*cursor == NULL) {
|
||
krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
|
||
return ENOMEM;
|
||
}
|
||
(*cursor)->idx = 0;
|
||
(*cursor)->cursor = NULL;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* Get next credential cache from the iteration.
|
||
*
|
||
* @param context A Kerberos 5 context
|
||
* @param cursor the iteration cursor
|
||
* @param cache the returned cursor, pointer is set to NULL on failure
|
||
* and a cache on success. The returned cache needs to be freed
|
||
* with krb5_cc_close() or destroyed with krb5_cc_destroy().
|
||
*
|
||
* @return Return 0 or and error, KRB5_CC_END is returned at the end
|
||
* of iteration. See krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cccol_cursor_next(krb5_context context, krb5_cccol_cursor cursor,
|
||
krb5_ccache *cache)
|
||
{
|
||
krb5_error_code ret;
|
||
|
||
*cache = NULL;
|
||
|
||
while (cursor->idx < context->num_cc_ops) {
|
||
|
||
if (cursor->cursor == NULL) {
|
||
ret = krb5_cc_cache_get_first (context,
|
||
context->cc_ops[cursor->idx].prefix,
|
||
&cursor->cursor);
|
||
if (ret) {
|
||
cursor->idx++;
|
||
continue;
|
||
}
|
||
}
|
||
ret = krb5_cc_cache_next(context, cursor->cursor, cache);
|
||
if (ret == 0)
|
||
break;
|
||
|
||
krb5_cc_cache_end_seq_get(context, cursor->cursor);
|
||
cursor->cursor = NULL;
|
||
if (ret != KRB5_CC_END)
|
||
break;
|
||
|
||
cursor->idx++;
|
||
}
|
||
if (cursor->idx >= context->num_cc_ops) {
|
||
krb5_set_error_message(context, KRB5_CC_END,
|
||
N_("Reached end of credential caches", ""));
|
||
return KRB5_CC_END;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* End an iteration and free all resources, can be done before end is reached.
|
||
*
|
||
* @param context A Kerberos 5 context
|
||
* @param cursor the iteration cursor to be freed.
|
||
*
|
||
* @return Return 0 or and error, KRB5_CC_END is returned at the end
|
||
* of iteration. See krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cccol_cursor_free(krb5_context context, krb5_cccol_cursor *cursor)
|
||
{
|
||
krb5_cccol_cursor c = *cursor;
|
||
|
||
*cursor = NULL;
|
||
if (c) {
|
||
if (c->cursor)
|
||
krb5_cc_cache_end_seq_get(context, c->cursor);
|
||
free(c);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* Return the last time the credential cache was modified.
|
||
*
|
||
* @param context A Kerberos 5 context
|
||
* @param id The credential cache to probe
|
||
* @param mtime the last modification time, set to 0 on error.
|
||
|
||
* @return Return 0 or and error. See krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cc_last_change_time(krb5_context context,
|
||
krb5_ccache id,
|
||
krb5_timestamp *mtime)
|
||
{
|
||
*mtime = 0;
|
||
return (*id->ops->lastchange)(context, id, mtime);
|
||
}
|
||
|
||
/**
|
||
* Return the last modfication time for a cache collection. The query
|
||
* can be limited to a specific cache type. If the function return 0
|
||
* and mtime is 0, there was no credentials in the caches.
|
||
*
|
||
* @param context A Kerberos 5 context
|
||
* @param id The credential cache to probe
|
||
* @param mtime the last modification time, set to 0 on error.
|
||
|
||
* @return Return 0 or and error. See krb5_get_error_message().
|
||
*
|
||
* @ingroup krb5_ccache
|
||
*/
|
||
|
||
krb5_error_code KRB5_LIB_FUNCTION
|
||
krb5_cccol_last_change_time(krb5_context context,
|
||
const char *type,
|
||
krb5_timestamp *mtime)
|
||
{
|
||
krb5_cccol_cursor cursor;
|
||
krb5_error_code ret;
|
||
krb5_ccache id;
|
||
krb5_timestamp t = 0;
|
||
|
||
*mtime = 0;
|
||
|
||
ret = krb5_cccol_cursor_new (context, &cursor);
|
||
if (ret)
|
||
return ret;
|
||
|
||
while ((ret = krb5_cccol_cursor_next (context, cursor, &id)) == 0) {
|
||
|
||
if (type && strcmp(krb5_cc_get_type(context, id), type) != 0)
|
||
continue;
|
||
|
||
ret = krb5_cc_last_change_time(context, id, &t);
|
||
krb5_cc_close(context, id);
|
||
if (ret)
|
||
continue;
|
||
if (t > *mtime)
|
||
*mtime = t;
|
||
}
|
||
|
||
krb5_cccol_cursor_free(context, &cursor);
|
||
|
||
return 0;
|
||
}
|