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Diffstat (limited to 'third_party/heimdal/kcm/config.c')
| -rw-r--r-- | third_party/heimdal/kcm/config.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/third_party/heimdal/kcm/config.c b/third_party/heimdal/kcm/config.c new file mode 100644 index 0000000..be4bce6 --- /dev/null +++ b/third_party/heimdal/kcm/config.c @@ -0,0 +1,402 @@ +/* + * Copyright (c) 2005, PADL Software Pty Ltd. + * All rights reserved. + * + * Portions Copyright (c) 2009 Apple Inc. 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> + +static const char *config_file; /* location of kcm config file */ + +size_t max_request = 0; /* maximal size of a request */ +char *socket_path = NULL; + +static char *max_request_str; /* `max_request' as a string */ + +int detach_from_console = -1; +int daemon_child = -1; + +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 launchd_flag = 0; +int disallow_getting_krbtgt = 0; +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" + }, + { + "launchd", 0, arg_flag, &launchd_flag, + "when in use by launchd", NULL + }, + { + "detach", 0 , arg_flag, &detach_from_console, + "detach from console", NULL + }, + { + "daemon-child", 0 , arg_integer, &daemon_child, + "private argument, do not use", NULL + }, + { "help", 'h', arg_flag, &help_flag, NULL, NULL }, + { + "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", NULL + }, + { + "disallow-getting-krbtgt", 0, arg_flag, &disallow_getting_krbtgt, + "disable fetching krbtgt from the cache", NULL + }, + { + "renewable-life", 'r', arg_string, &renew_life, + "renewable lifetime of system tickets", "time" + }, + { + "max-request", 'r', arg_integer, &max_request_str, + "max request size", "bytes" + }, + { + "socket-path", 's', arg_string, &socket_path, + "path to kcm domain socket", "path" + }, + { + "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, NULL, NULL } +}; + +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 = "6 months"; + + 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 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; + argv += 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) { + ssize_t bytes; + + if ((bytes = parse_bytes(max_request_str, NULL)) < 0) + krb5_errx(kcm_context, 1, + "--max-request size must be non-negative"); + + max_request = bytes; + } + + if(max_request == 0){ + p = krb5_config_get_string (kcm_context, + NULL, + "kcm", + "max-request", + NULL); + if (p) { + ssize_t bytes; + + if ((bytes = parse_bytes(max_request_str, NULL)) < 0) + krb5_errx(kcm_context, 1, + "[kcm] max-request size must be non-negative"); + max_request = bytes; + } + } + + 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, + FALSE, + "kcm", + "detach", NULL); + kcm_openlog(); + if(max_request == 0) + max_request = 64 * 1024; +} + |