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-rw-r--r--third_party/heimdal/lib/hdb/dbinfo.c291
1 files changed, 291 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/hdb/dbinfo.c b/third_party/heimdal/lib/hdb/dbinfo.c
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+/*
+ * Copyright (c) 2005 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 "hdb_locl.h"
+
+struct hdb_dbinfo {
+ char *label;
+ char *realm;
+ char *dbname;
+ char *mkey_file;
+ char *acl_file;
+ char *log_file;
+ const krb5_config_binding *binding;
+ struct hdb_dbinfo *next;
+};
+
+static int
+get_dbinfo(krb5_context context,
+ const krb5_config_binding *db_binding,
+ const char *label,
+ struct hdb_dbinfo **db)
+{
+ struct hdb_dbinfo *di;
+ const char *p;
+
+ *db = NULL;
+
+ p = krb5_config_get_string(context, db_binding, "dbname", NULL);
+ if(p == NULL)
+ return 0;
+
+ di = calloc(1, sizeof(*di));
+ if (di == NULL) {
+ krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+ return ENOMEM;
+ }
+ di->label = strdup(label);
+ di->dbname = strdup(p);
+
+ p = krb5_config_get_string(context, db_binding, "realm", NULL);
+ if(p)
+ di->realm = strdup(p);
+ p = krb5_config_get_string(context, db_binding, "mkey_file", NULL);
+ if(p)
+ di->mkey_file = strdup(p);
+ p = krb5_config_get_string(context, db_binding, "acl_file", NULL);
+ if(p)
+ di->acl_file = strdup(p);
+ p = krb5_config_get_string(context, db_binding, "log_file", NULL);
+ if(p)
+ di->log_file = strdup(p);
+
+ di->binding = db_binding;
+
+ *db = di;
+ return 0;
+}
+
+
+int
+hdb_get_dbinfo(krb5_context context, struct hdb_dbinfo **dbp)
+{
+ const krb5_config_binding *db_binding;
+ struct hdb_dbinfo *di, **dt, *databases;
+ const char *default_dbname = HDB_DEFAULT_DB;
+ const char *default_mkey = HDB_DB_DIR "/m-key";
+ const char *default_acl = HDB_DB_DIR "/kadmind.acl";
+ const char *p;
+ int ret;
+
+ *dbp = NULL;
+ dt = NULL;
+ databases = NULL;
+
+ db_binding = krb5_config_get_list(context, NULL,
+ "kdc",
+ "database",
+ NULL);
+ if (db_binding) {
+
+ ret = get_dbinfo(context, db_binding, "default", &databases);
+ if (ret == 0 && databases != NULL)
+ dt = &databases->next;
+
+ for ( ; db_binding != NULL; db_binding = db_binding->next) {
+
+ if (db_binding->type != krb5_config_list)
+ continue;
+
+ ret = get_dbinfo(context, db_binding->u.list,
+ db_binding->name, &di);
+ if (ret)
+ krb5_err(context, 1, ret, "failed getting realm");
+
+ if (di == NULL)
+ continue;
+
+ if (dt)
+ *dt = di;
+ else {
+ hdb_free_dbinfo(context, &databases);
+ databases = di;
+ }
+ dt = &di->next;
+
+ }
+ }
+
+ if (databases == NULL) {
+ /* if there are none specified, create one and use defaults */
+ databases = calloc(1, sizeof(*databases));
+ databases->label = strdup("default");
+ }
+
+ for (di = databases; di; di = di->next) {
+ if (di->dbname == NULL) {
+ di->dbname = strdup(default_dbname);
+ if (di->mkey_file == NULL)
+ di->mkey_file = strdup(default_mkey);
+ }
+ if (di->mkey_file == NULL) {
+ p = strrchr(di->dbname, '.');
+ if(p == NULL || strchr(p, '/') != NULL)
+ /* final pathname component does not contain a . */
+ ret = asprintf(&di->mkey_file, "%s.mkey", di->dbname);
+ else
+ /* the filename is something.else, replace .else with
+ .mkey */
+ ret = asprintf(&di->mkey_file, "%.*s.mkey",
+ (int)(p - di->dbname), di->dbname);
+ if (ret == -1) {
+ hdb_free_dbinfo(context, &databases);
+ return ENOMEM;
+ }
+ }
+ if(di->acl_file == NULL)
+ di->acl_file = strdup(default_acl);
+ }
+ *dbp = databases;
+ return 0;
+}
+
+
+struct hdb_dbinfo *
+hdb_dbinfo_get_next(struct hdb_dbinfo *dbp, struct hdb_dbinfo *dbprevp)
+{
+ if (dbprevp == NULL)
+ return dbp;
+ else
+ return dbprevp->next;
+}
+
+const char *
+hdb_dbinfo_get_label(krb5_context context, struct hdb_dbinfo *dbp)
+{
+ return dbp->label;
+}
+
+const char *
+hdb_dbinfo_get_realm(krb5_context context, struct hdb_dbinfo *dbp)
+{
+ return dbp->realm;
+}
+
+const char *
+hdb_dbinfo_get_dbname(krb5_context context, struct hdb_dbinfo *dbp)
+{
+ return dbp->dbname;
+}
+
+const char *
+hdb_dbinfo_get_mkey_file(krb5_context context, struct hdb_dbinfo *dbp)
+{
+ return dbp->mkey_file;
+}
+
+const char *
+hdb_dbinfo_get_acl_file(krb5_context context, struct hdb_dbinfo *dbp)
+{
+ return dbp->acl_file;
+}
+
+const char *
+hdb_dbinfo_get_log_file(krb5_context context, struct hdb_dbinfo *dbp)
+{
+ return dbp->log_file;
+}
+
+const krb5_config_binding *
+hdb_dbinfo_get_binding(krb5_context context, struct hdb_dbinfo *dbp)
+{
+ return dbp->binding;
+}
+
+void
+hdb_free_dbinfo(krb5_context context, struct hdb_dbinfo **dbp)
+{
+ struct hdb_dbinfo *di, *ndi;
+
+ for(di = *dbp; di != NULL; di = ndi) {
+ ndi = di->next;
+ free (di->label);
+ free (di->realm);
+ free (di->dbname);
+ free (di->mkey_file);
+ free (di->acl_file);
+ free (di->log_file);
+ free(di);
+ }
+ *dbp = NULL;
+}
+
+/**
+ * Return the directory where the hdb database resides.
+ *
+ * @param context Kerberos 5 context.
+ *
+ * @return string pointing to directory.
+ */
+
+const char *
+hdb_db_dir(krb5_context context)
+{
+ const char *p;
+
+ p = krb5_config_get_string(context, NULL, "hdb", "db-dir", NULL);
+ if (p)
+ return p;
+
+ return HDB_DB_DIR;
+}
+
+/**
+ * Return the default hdb database resides.
+ *
+ * @param context Kerberos 5 context.
+ *
+ * @return string pointing to directory.
+ */
+
+const char *
+hdb_default_db(krb5_context context)
+{
+ static char *default_hdb = NULL;
+ struct hdb_dbinfo *dbinfo = NULL;
+ struct hdb_dbinfo *d = NULL;
+ const char *s;
+
+ if (default_hdb)
+ return default_hdb;
+
+ (void) hdb_get_dbinfo(context, &dbinfo);
+ while ((d = hdb_dbinfo_get_next(dbinfo, d)) != NULL) {
+ if ((s = hdb_dbinfo_get_dbname(context, d)) &&
+ (default_hdb = strdup(s)))
+ break;
+ }
+
+ hdb_free_dbinfo(context, &dbinfo);
+ return default_hdb ? default_hdb : HDB_DEFAULT_DB;
+}
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