diff options
Diffstat (limited to 'crypto/heimdal/lib/kadm5/acl.c')
-rw-r--r-- | crypto/heimdal/lib/kadm5/acl.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/kadm5/acl.c b/crypto/heimdal/lib/kadm5/acl.c new file mode 100644 index 0000000..3f42c60 --- /dev/null +++ b/crypto/heimdal/lib/kadm5/acl.c @@ -0,0 +1,138 @@ +/* + * Copyright (c) 1997, 1999 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,v 1.10 1999/12/02 17:05:05 joda Exp $"); + +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, u_int32_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(u_int32_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; +} + +kadm5_ret_t +_kadm5_acl_init(kadm5_server_context *context) +{ + FILE *f; + char buf[128]; + krb5_principal princ; + int flags; + krb5_error_code ret; + + krb5_parse_name(context->context, KADM5_ADMIN_SERVICE, &princ); + 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; + } + + flags = -1; + f = fopen(context->config.acl_file, "r"); + if(f){ + while(fgets(buf, sizeof(buf), f)){ + char *foo = NULL, *p; + p = strtok_r(buf, " \t\n", &foo); + if(p == NULL) + continue; + ret = krb5_parse_name(context->context, p, &princ); + if(ret) + continue; + if(!krb5_principal_compare(context->context, + context->caller, princ)){ + krb5_free_principal(context->context, princ); + continue; + } + krb5_free_principal(context->context, princ); + p = strtok_r(NULL, "\n", &foo); + if(p == NULL) + continue; + ret = _kadm5_string_to_privs(p, &flags); + break; + } + fclose(f); + } + if(flags == -1) + flags = 0; + context->acl_flags = flags; + return 0; +} + +kadm5_ret_t +_kadm5_acl_check_permission(kadm5_server_context *context, unsigned op) +{ + unsigned res = ~context->acl_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; +} |