4c6a364bf5
libgssapi context (that might not exist). git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@17690 ec53bebd-3082-4978-b11e-865c3cabbd6b
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/*
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* Copyright (c) 1998 - 2001 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 "ftpd_locl.h"
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#include <gssapi.h>
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#include <krb5.h>
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RCSID("$Id$");
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/* XXX a bit too much of krb5 dependency here...
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What is the correct way to do this?
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*/
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/* XXX sync with gssapi.c */
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struct gss_data {
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gss_ctx_id_t context_hdl;
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char *client_name;
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gss_cred_id_t delegated_cred_handle;
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};
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int gss_userok(void*, char*); /* to keep gcc happy */
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int
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gss_userok(void *app_data, char *username)
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{
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struct gss_data *data = app_data;
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krb5_context context;
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krb5_error_code ret;
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krb5_principal client;
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OM_uint32 minor_status;
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ret = krb5_init_context(&context);
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if (ret)
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return 1;
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ret = krb5_parse_name(context, data->client_name, &client);
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if(ret) {
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krb5_free_context(context);
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return 1;
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}
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ret = krb5_kuserok(context, client, username);
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if (!ret) {
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krb5_free_principal(context, client);
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krb5_free_context(context);
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return 1;
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}
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ret = 0;
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/* more of krb-depend stuff :-( */
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/* gss_add_cred() ? */
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if (data->delegated_cred_handle != GSS_C_NO_CREDENTIAL) {
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krb5_ccache ccache = NULL;
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const char* ticketfile;
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struct passwd *kpw;
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ret = krb5_cc_gen_new(context, &krb5_fcc_ops, &ccache);
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if (ret)
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goto fail;
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ticketfile = krb5_cc_get_name(context, ccache);
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ret = gss_krb5_copy_ccache(&minor_status,
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data->delegated_cred_handle,
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ccache);
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if (ret) {
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ret = 0;
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goto fail;
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}
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do_destroy_tickets = 1;
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kpw = getpwnam(username);
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if (kpw == NULL) {
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unlink(ticketfile);
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ret = 1;
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goto fail;
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}
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chown (ticketfile, kpw->pw_uid, kpw->pw_gid);
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if (asprintf(&k5ccname, "FILE:%s", ticketfile) != -1) {
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esetenv ("KRB5CCNAME", k5ccname, 1);
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}
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afslog(NULL, 1);
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fail:
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if (ccache)
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krb5_cc_close(context, ccache);
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}
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gss_release_cred(&minor_status, &data->delegated_cred_handle);
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krb5_free_principal(context, client);
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krb5_free_context(context);
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return ret;
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}
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