#include "kcm_locl.h"
#include <getarg.h>
static const char *config_file;
size_t max_request = 0;
char *socket_path = NULL;
char *door_path = NULL;
static char *max_request_str;
#ifdef SUPPORT_DETACH
int detach_from_console = -1;
#define DETACH_IS_DEFAULT FALSE
#endif
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_user = NULL;
static const char *system_group = NULL;
static const char *renew_life = NULL;
static const char *ticket_life = NULL;
int launchd_flag = 0;
int disallow_getting_krbtgt = 0;
int use_uid_matching = 0;
int max_num_requests = 100000;
int kcm_timeout = -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"
},
{
"launchd", 0, arg_flag, &launchd_flag,
"when in use by launchd"
},
#ifdef SUPPORT_DETACH
#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
#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"
},
{
"disallow-getting-krbtgt", 0, arg_flag, &disallow_getting_krbtgt,
"disable fetching krbtgt from the cache"
},
{
"use-uid-matching", 0, arg_flag, &use_uid_matching,
"only use UID when matching allowed credentials or not"
},
{
"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"
},
{
"number-requests", 0, arg_integer, &max_num_requests,
"number of requests processed before exit"
},
{
"idle-timeout", 0, arg_integer, &kcm_timeout,
"number of seconds of idle time before timeout (0 disables timeout)", "seconds"
},
{ "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;
struct passwd *pw;
int uid_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;
}
if (uid_p)
ccache->uid = uid;
else
ccache->uid = 0;
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->keytab);
} else {
ret = krb5_kt_default(kcm_context, &ccache->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;
}
}
ret = kcm_ccache_enqueue_default(kcm_context, ccache, NULL);
kcm_release_ccache(kcm_context, ccache);
return ret;
}
void
kcm_configure(int argc, char **argv)
{
krb5_error_code ret;
int optidx = 0;
const char *p;
while(getarg(args, num_args, argc, argv, &optidx))
warnx("error at argument `%s'", argv[optidx]);
if(help_flag)
usage (0);
if (version_flag) {
print_version(NULL);
exit(0);
}
argc -= optidx;
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 (disallow_getting_krbtgt == -1) {
disallow_getting_krbtgt =
krb5_config_get_bool_default(kcm_context, NULL, FALSE, "kcm",
"disallow-getting-krbtgt", NULL);
}
#ifdef SUPPORT_DETACH
if(detach_from_console == -1)
detach_from_console = krb5_config_get_bool_default(kcm_context, NULL,
DETACH_IS_DEFAULT,
"kcm",
"detach", NULL);
#endif
kcm_openlog();
if(max_request == 0)
max_request = 64 * 1024;
}