diff options
Diffstat (limited to 'crypto/heimdal/lib/kadm5/acl.c')
| -rw-r--r-- | crypto/heimdal/lib/kadm5/acl.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/crypto/heimdal/lib/kadm5/acl.c b/crypto/heimdal/lib/kadm5/acl.c deleted file mode 100644 index 9a2f75b..0000000 --- a/crypto/heimdal/lib/kadm5/acl.c +++ /dev/null @@ -1,216 +0,0 @@ -/* - * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. Neither the name of the Institute nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include "kadm5_locl.h" - -RCSID("$Id: acl.c 17445 2006-05-05 10:37:46Z lha $"); - -static struct units acl_units[] = { - { "all", KADM5_PRIV_ALL }, - { "change-password",KADM5_PRIV_CPW }, - { "cpw", KADM5_PRIV_CPW }, - { "list", KADM5_PRIV_LIST }, - { "delete", KADM5_PRIV_DELETE }, - { "modify", KADM5_PRIV_MODIFY }, - { "add", KADM5_PRIV_ADD }, - { "get", KADM5_PRIV_GET }, - { NULL } -}; - -kadm5_ret_t -_kadm5_string_to_privs(const char *s, uint32_t* privs) -{ - int flags; - flags = parse_flags(s, acl_units, 0); - if(flags < 0) - return KADM5_FAILURE; - *privs = flags; - return 0; -} - -kadm5_ret_t -_kadm5_privs_to_string(uint32_t privs, char *string, size_t len) -{ - if(privs == 0) - strlcpy(string, "none", len); - else - unparse_flags(privs, acl_units + 1, string, len); - return 0; -} - -/* - * retrieve the right for the current caller on `princ' (NULL means all) - * and store them in `ret_flags' - * return 0 or an error. - */ - -static kadm5_ret_t -fetch_acl (kadm5_server_context *context, - krb5_const_principal princ, - unsigned *ret_flags) -{ - FILE *f; - krb5_error_code ret = 0; - char buf[256]; - - *ret_flags = 0; - - /* no acl file -> no rights */ - f = fopen(context->config.acl_file, "r"); - if (f == NULL) - return 0; - - while(fgets(buf, sizeof(buf), f) != NULL) { - char *foo = NULL, *p; - krb5_principal this_princ; - unsigned flags = 0; - - p = strtok_r(buf, " \t\n", &foo); - if(p == NULL) - continue; - if (*p == '#') /* comment */ - continue; - ret = krb5_parse_name(context->context, p, &this_princ); - if(ret) - break; - if(!krb5_principal_compare(context->context, - context->caller, this_princ)) { - krb5_free_principal(context->context, this_princ); - continue; - } - krb5_free_principal(context->context, this_princ); - p = strtok_r(NULL, " \t\n", &foo); - if(p == NULL) - continue; - ret = _kadm5_string_to_privs(p, &flags); - if (ret) - break; - p = strtok_r(NULL, " \t\n", &foo); - if (p == NULL) { - *ret_flags = flags; - break; - } - if (princ != NULL) { - krb5_principal pattern_princ; - krb5_boolean match; - - ret = krb5_parse_name (context->context, p, &pattern_princ); - if (ret) - break; - match = krb5_principal_match (context->context, - princ, pattern_princ); - krb5_free_principal (context->context, pattern_princ); - if (match) { - *ret_flags = flags; - break; - } - } - } - fclose(f); - return ret; -} - -/* - * set global acl flags in `context' for the current caller. - * return 0 on success or an error - */ - -kadm5_ret_t -_kadm5_acl_init(kadm5_server_context *context) -{ - krb5_principal princ; - krb5_error_code ret; - - ret = krb5_parse_name(context->context, KADM5_ADMIN_SERVICE, &princ); - if (ret) - return ret; - ret = krb5_principal_compare(context->context, context->caller, princ); - krb5_free_principal(context->context, princ); - if(ret != 0) { - context->acl_flags = KADM5_PRIV_ALL; - return 0; - } - - return fetch_acl (context, NULL, &context->acl_flags); -} - -/* - * check if `flags' allows `op' - * return 0 if OK or an error - */ - -static kadm5_ret_t -check_flags (unsigned op, - unsigned flags) -{ - unsigned res = ~flags & op; - - if(res & KADM5_PRIV_GET) - return KADM5_AUTH_GET; - if(res & KADM5_PRIV_ADD) - return KADM5_AUTH_ADD; - if(res & KADM5_PRIV_MODIFY) - return KADM5_AUTH_MODIFY; - if(res & KADM5_PRIV_DELETE) - return KADM5_AUTH_DELETE; - if(res & KADM5_PRIV_CPW) - return KADM5_AUTH_CHANGEPW; - if(res & KADM5_PRIV_LIST) - return KADM5_AUTH_LIST; - if(res) - return KADM5_AUTH_INSUFFICIENT; - return 0; -} - -/* - * return 0 if the current caller in `context' is allowed to perform - * `op' on `princ' and otherwise an error - * princ == NULL if it's not relevant. - */ - -kadm5_ret_t -_kadm5_acl_check_permission(kadm5_server_context *context, - unsigned op, - krb5_const_principal princ) -{ - kadm5_ret_t ret; - unsigned princ_flags; - - ret = check_flags (op, context->acl_flags); - if (ret == 0) - return ret; - ret = fetch_acl (context, princ, &princ_flags); - if (ret) - return ret; - return check_flags (op, princ_flags); -} |
