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-rw-r--r--crypto/heimdal/kcm/config.c390
1 files changed, 390 insertions, 0 deletions
diff --git a/crypto/heimdal/kcm/config.c b/crypto/heimdal/kcm/config.c
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+++ b/crypto/heimdal/kcm/config.c
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+/*
+ * Copyright (c) 2005, PADL Software Pty Ltd.
+ * 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "kcm_locl.h"
+#include <getarg.h>
+#include <parse_bytes.h>
+
+RCSID("$Id: config.c 15296 2005-05-30 10:17:43Z lha $");
+
+static const char *config_file; /* location of kcm config file */
+
+size_t max_request = 0; /* maximal size of a request */
+char *socket_path = NULL;
+char *door_path = NULL;
+
+static char *max_request_str; /* `max_request' as a string */
+
+int detach_from_console = -1;
+#define DETACH_IS_DEFAULT FALSE
+
+static const char *system_cache_name = NULL;
+static const char *system_keytab = NULL;
+static const char *system_principal = NULL;
+static const char *system_server = NULL;
+static const char *system_perms = NULL;
+static const char *system_user = NULL;
+static const char *system_group = NULL;
+
+static const char *renew_life = NULL;
+static const char *ticket_life = NULL;
+
+int disallow_getting_krbtgt = -1;
+int name_constraints = -1;
+
+static int help_flag;
+static int version_flag;
+
+static struct getargs args[] = {
+ {
+ "cache-name", 0, arg_string, &system_cache_name,
+ "system cache name", "cachename"
+ },
+ {
+ "config-file", 'c', arg_string, &config_file,
+ "location of config file", "file"
+ },
+ {
+ "group", 'g', arg_string, &system_group,
+ "system cache group", "group"
+ },
+ {
+ "max-request", 0, arg_string, &max_request,
+ "max size for a kcm-request", "size"
+ },
+#if DETACH_IS_DEFAULT
+ {
+ "detach", 'D', arg_negative_flag, &detach_from_console,
+ "don't detach from console"
+ },
+#else
+ {
+ "detach", 0 , arg_flag, &detach_from_console,
+ "detach from console"
+ },
+#endif
+ { "help", 'h', arg_flag, &help_flag },
+ {
+ "system-principal", 'k', arg_string, &system_principal,
+ "system principal name", "principal"
+ },
+ {
+ "lifetime", 'l', arg_string, &ticket_life,
+ "lifetime of system tickets", "time"
+ },
+ {
+ "mode", 'm', arg_string, &system_perms,
+ "octal mode of system cache", "mode"
+ },
+ {
+ "name-constraints", 'n', arg_negative_flag, &name_constraints,
+ "disable credentials cache name constraints"
+ },
+ {
+ "disallow-getting-krbtgt", 0, arg_flag, &disallow_getting_krbtgt,
+ "disable fetching krbtgt from the cache"
+ },
+ {
+ "renewable-life", 'r', arg_string, &renew_life,
+ "renewable lifetime of system tickets", "time"
+ },
+ {
+ "socket-path", 's', arg_string, &socket_path,
+ "path to kcm domain socket", "path"
+ },
+#ifdef HAVE_DOOR_CREATE
+ {
+ "door-path", 's', arg_string, &door_path,
+ "path to kcm door", "path"
+ },
+#endif
+ {
+ "server", 'S', arg_string, &system_server,
+ "server to get system ticket for", "principal"
+ },
+ {
+ "keytab", 't', arg_string, &system_keytab,
+ "system keytab name", "keytab"
+ },
+ {
+ "user", 'u', arg_string, &system_user,
+ "system cache owner", "user"
+ },
+ { "version", 'v', arg_flag, &version_flag }
+};
+
+static int num_args = sizeof(args) / sizeof(args[0]);
+
+static void
+usage(int ret)
+{
+ arg_printusage (args, num_args, NULL, "");
+ exit (ret);
+}
+
+static int parse_owners(kcm_ccache ccache)
+{
+ uid_t uid = 0;
+ gid_t gid = 0;
+ struct passwd *pw;
+ struct group *gr;
+ int uid_p = 0;
+ int gid_p = 0;
+
+ if (system_user != NULL) {
+ if (isdigit((unsigned char)system_user[0])) {
+ pw = getpwuid(atoi(system_user));
+ } else {
+ pw = getpwnam(system_user);
+ }
+ if (pw == NULL) {
+ return errno;
+ }
+
+ system_user = strdup(pw->pw_name);
+ if (system_user == NULL) {
+ return ENOMEM;
+ }
+
+ uid = pw->pw_uid; uid_p = 1;
+ gid = pw->pw_gid; gid_p = 1;
+ }
+
+ if (system_group != NULL) {
+ if (isdigit((unsigned char)system_group[0])) {
+ gr = getgrgid(atoi(system_group));
+ } else {
+ gr = getgrnam(system_group);
+ }
+ if (gr == NULL) {
+ return errno;
+ }
+
+ gid = gr->gr_gid; gid_p = 1;
+ }
+
+ if (uid_p)
+ ccache->uid = uid;
+ else
+ ccache->uid = 0; /* geteuid() XXX */
+
+ if (gid_p)
+ ccache->gid = gid;
+ else
+ ccache->gid = 0; /* getegid() XXX */
+
+ return 0;
+}
+
+static const char *
+kcm_system_config_get_string(const char *string)
+{
+ return krb5_config_get_string(kcm_context, NULL, "kcm",
+ "system_ccache", string, NULL);
+}
+
+static krb5_error_code
+ccache_init_system(void)
+{
+ kcm_ccache ccache;
+ krb5_error_code ret;
+
+ if (system_cache_name == NULL)
+ system_cache_name = kcm_system_config_get_string("cc_name");
+
+ ret = kcm_ccache_new(kcm_context,
+ system_cache_name ? system_cache_name : "SYSTEM",
+ &ccache);
+ if (ret)
+ return ret;
+
+ ccache->flags |= KCM_FLAGS_OWNER_IS_SYSTEM;
+ ccache->flags |= KCM_FLAGS_USE_KEYTAB;
+
+ ret = parse_owners(ccache);
+ if (ret)
+ return ret;
+
+ ret = krb5_parse_name(kcm_context, system_principal, &ccache->client);
+ if (ret) {
+ kcm_release_ccache(kcm_context, &ccache);
+ return ret;
+ }
+
+ if (system_server == NULL)
+ system_server = kcm_system_config_get_string("server");
+
+ if (system_server != NULL) {
+ ret = krb5_parse_name(kcm_context, system_server, &ccache->server);
+ if (ret) {
+ kcm_release_ccache(kcm_context, &ccache);
+ return ret;
+ }
+ }
+
+ if (system_keytab == NULL)
+ system_keytab = kcm_system_config_get_string("keytab_name");
+
+ if (system_keytab != NULL) {
+ ret = krb5_kt_resolve(kcm_context, system_keytab, &ccache->key.keytab);
+ } else {
+ ret = krb5_kt_default(kcm_context, &ccache->key.keytab);
+ }
+ if (ret) {
+ kcm_release_ccache(kcm_context, &ccache);
+ return ret;
+ }
+
+ if (renew_life == NULL)
+ renew_life = kcm_system_config_get_string("renew_life");
+
+ if (renew_life == NULL)
+ renew_life = "1 month";
+
+ if (renew_life != NULL) {
+ ccache->renew_life = parse_time(renew_life, "s");
+ if (ccache->renew_life < 0) {
+ kcm_release_ccache(kcm_context, &ccache);
+ return EINVAL;
+ }
+ }
+
+ if (ticket_life == NULL)
+ ticket_life = kcm_system_config_get_string("ticket_life");
+
+ if (ticket_life != NULL) {
+ ccache->tkt_life = parse_time(ticket_life, "s");
+ if (ccache->tkt_life < 0) {
+ kcm_release_ccache(kcm_context, &ccache);
+ return EINVAL;
+ }
+ }
+
+ if (system_perms == NULL)
+ system_perms = kcm_system_config_get_string("mode");
+
+ if (system_perms != NULL) {
+ int mode;
+
+ if (sscanf(system_perms, "%o", &mode) != 1)
+ return EINVAL;
+
+ ccache->mode = mode;
+ }
+
+ if (disallow_getting_krbtgt == -1) {
+ disallow_getting_krbtgt =
+ krb5_config_get_bool_default(kcm_context, NULL, FALSE, "kcm",
+ "disallow-getting-krbtgt", NULL);
+ }
+
+ /* enqueue default actions for credentials cache */
+ ret = kcm_ccache_enqueue_default(kcm_context, ccache, NULL);
+
+ kcm_release_ccache(kcm_context, &ccache); /* retained by event queue */
+
+ return ret;
+}
+
+void
+kcm_configure(int argc, char **argv)
+{
+ krb5_error_code ret;
+ int optind = 0;
+ const char *p;
+
+ while(getarg(args, num_args, argc, argv, &optind))
+ warnx("error at argument `%s'", argv[optind]);
+
+ if(help_flag)
+ usage (0);
+
+ if (version_flag) {
+ print_version(NULL);
+ exit(0);
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc != 0)
+ usage(1);
+
+ {
+ char **files;
+
+ if(config_file == NULL)
+ config_file = _PATH_KCM_CONF;
+
+ ret = krb5_prepend_config_files_default(config_file, &files);
+ if (ret)
+ krb5_err(kcm_context, 1, ret, "getting configuration files");
+
+ ret = krb5_set_config_files(kcm_context, files);
+ krb5_free_config_files(files);
+ if(ret)
+ krb5_err(kcm_context, 1, ret, "reading configuration files");
+ }
+
+ if(max_request_str)
+ max_request = parse_bytes(max_request_str, NULL);
+
+ if(max_request == 0){
+ p = krb5_config_get_string (kcm_context,
+ NULL,
+ "kcm",
+ "max-request",
+ NULL);
+ if(p)
+ max_request = parse_bytes(p, NULL);
+ }
+
+ if (system_principal == NULL) {
+ system_principal = kcm_system_config_get_string("principal");
+ }
+
+ if (system_principal != NULL) {
+ ret = ccache_init_system();
+ if (ret)
+ krb5_err(kcm_context, 1, ret, "initializing system ccache");
+ }
+
+ if(detach_from_console == -1)
+ detach_from_console = krb5_config_get_bool_default(kcm_context, NULL,
+ DETACH_IS_DEFAULT,
+ "kcm",
+ "detach", NULL);
+ kcm_openlog();
+ if(max_request == 0)
+ max_request = 64 * 1024;
+}
+
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