diff options
Diffstat (limited to '')
| -rw-r--r-- | third_party/heimdal/kpasswd/kpasswdd.c | 905 |
1 files changed, 905 insertions, 0 deletions
diff --git a/third_party/heimdal/kpasswd/kpasswdd.c b/third_party/heimdal/kpasswd/kpasswdd.c new file mode 100644 index 0000000..e04eebe --- /dev/null +++ b/third_party/heimdal/kpasswd/kpasswdd.c @@ -0,0 +1,905 @@ +/* + * Copyright (c) 1997-2005 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 "kpasswd_locl.h" +RCSID("$Id$"); + +#include <kadm5/admin.h> +#ifdef HAVE_SYS_UN_H +#include <sys/un.h> +#endif +#include <hdb.h> +#include <kadm5/private.h> +#include <kadm5/kadm5_err.h> + +static krb5_context context; +static krb5_log_facility *log_facility; + +static struct getarg_strings addresses_str; +krb5_addresses explicit_addresses; + +static sig_atomic_t exit_flag = 0; + +static void +add_one_address (const char *str, int first) +{ + krb5_error_code ret; + krb5_addresses tmp; + + ret = krb5_parse_address (context, str, &tmp); + if (ret) + krb5_err (context, 1, ret, "parse_address `%s'", str); + if (first) + krb5_copy_addresses(context, &tmp, &explicit_addresses); + else + krb5_append_addresses(context, &explicit_addresses, &tmp); + krb5_free_addresses (context, &tmp); +} + +static void +send_reply (int s, + struct sockaddr *sa, + int sa_size, + krb5_data *ap_rep, + krb5_data *rest) +{ + struct msghdr msghdr; + struct iovec iov[3]; + uint16_t len, ap_rep_len; + u_char header[6]; + u_char *p; + + if (ap_rep) + ap_rep_len = ap_rep->length; + else + ap_rep_len = 0; + + len = 6 + ap_rep_len + rest->length; + p = header; + *p++ = (len >> 8) & 0xFF; + *p++ = (len >> 0) & 0xFF; + *p++ = 0; + *p++ = 1; + *p++ = (ap_rep_len >> 8) & 0xFF; + *p++ = (ap_rep_len >> 0) & 0xFF; + + memset (&msghdr, 0, sizeof(msghdr)); + msghdr.msg_name = (void *)sa; + msghdr.msg_namelen = sa_size; + msghdr.msg_iov = iov; + msghdr.msg_iovlen = sizeof(iov)/sizeof(*iov); +#if 0 + msghdr.msg_control = NULL; + msghdr.msg_controllen = 0; +#endif + + iov[0].iov_base = (char *)header; + iov[0].iov_len = 6; + if (ap_rep_len) { + iov[1].iov_base = ap_rep->data; + iov[1].iov_len = ap_rep->length; + } else { + iov[1].iov_base = NULL; + iov[1].iov_len = 0; + } + iov[2].iov_base = rest->data; + iov[2].iov_len = rest->length; + + if (sendmsg (s, &msghdr, 0) < 0) + krb5_warn (context, errno, "sendmsg"); +} + +static int +make_result (krb5_data *data, + uint16_t result_code, + const char *expl) +{ + krb5_error_code ret; + krb5_storage *sp; + + sp = krb5_storage_emem(); + if (sp == NULL) goto out; + ret = krb5_store_uint16(sp, result_code); + if (ret) goto out; + ret = krb5_store_stringz(sp, expl); + if (ret) goto out; + ret = krb5_storage_to_data(sp, data); + if (ret) goto out; + krb5_storage_free(sp); + + return 0; + out: + if (sp) + krb5_storage_free(sp); + + krb5_warnx (context, "Out of memory generating error reply"); + return 1; +} + +static void +reply_error (krb5_realm realm, + int s, + struct sockaddr *sa, + int sa_size, + krb5_error_code error_code, + uint16_t result_code, + const char *expl) +{ + krb5_error_code ret; + krb5_data error_data; + krb5_data e_data; + krb5_principal server = NULL; + + if (make_result(&e_data, result_code, expl)) + return; + + if (realm) { + ret = krb5_make_principal (context, &server, realm, + "kadmin", "changepw", NULL); + if (ret) { + krb5_data_free (&e_data); + return; + } + } + + ret = krb5_mk_error (context, + error_code, + NULL, + &e_data, + NULL, + server, + NULL, + NULL, + &error_data); + if (server) + krb5_free_principal(context, server); + krb5_data_free (&e_data); + if (ret) { + krb5_warn (context, ret, "Could not even generate error reply"); + return; + } + send_reply (s, sa, sa_size, NULL, &error_data); + krb5_data_free (&error_data); +} + +static void +reply_priv (krb5_auth_context auth_context, + int s, + struct sockaddr *sa, + int sa_size, + uint16_t result_code, + const char *expl) +{ + krb5_error_code ret; + krb5_data krb_priv_data; + krb5_data ap_rep_data; + krb5_data e_data; + + ret = krb5_mk_rep (context, + auth_context, + &ap_rep_data); + if (ret) { + krb5_warn (context, ret, "Could not even generate error reply"); + return; + } + + if (make_result(&e_data, result_code, expl)) + return; + + ret = krb5_mk_priv (context, + auth_context, + &e_data, + &krb_priv_data, + NULL); + krb5_data_free (&e_data); + if (ret) { + krb5_warn (context, ret, "Could not even generate error reply"); + return; + } + send_reply (s, sa, sa_size, &ap_rep_data, &krb_priv_data); + krb5_data_free (&ap_rep_data); + krb5_data_free (&krb_priv_data); +} + +/* + * Change the password for `principal', sending the reply back on `s' + * (`sa', `sa_size') to `pwd_data'. + */ + +static void +change (krb5_auth_context auth_context, + krb5_principal admin_principal, + uint16_t version, + int s, + struct sockaddr *sa, + int sa_size, + krb5_data *in_data) +{ + krb5_error_code ret; + char *client = NULL, *admin = NULL; + kadm5_config_params conf; + void *kadm5_handle = NULL; + krb5_principal principal = NULL; + krb5_data *pwd_data = NULL; + char *tmp; + ChangePasswdDataMS chpw; + + memset (&conf, 0, sizeof(conf)); + memset(&chpw, 0, sizeof(chpw)); + + if (version == KRB5_KPASSWD_VERS_CHANGEPW) { + ret = krb5_copy_data(context, in_data, &pwd_data); + if (ret) { + krb5_warn (context, ret, "krb5_copy_data"); + reply_priv (auth_context, s, sa, sa_size, KRB5_KPASSWD_MALFORMED, + "out out memory copying password"); + return; + } + principal = admin_principal; + } else if (version == KRB5_KPASSWD_VERS_SETPW) { + size_t len; + + ret = decode_ChangePasswdDataMS(in_data->data, in_data->length, + &chpw, &len); + if (ret) { + krb5_warn (context, ret, "decode_ChangePasswdDataMS"); + reply_priv (auth_context, s, sa, sa_size, KRB5_KPASSWD_MALFORMED, + "malformed ChangePasswdData"); + return; + } + + + ret = krb5_copy_data(context, &chpw.newpasswd, &pwd_data); + if (ret) { + krb5_warn (context, ret, "krb5_copy_data"); + reply_priv (auth_context, s, sa, sa_size, KRB5_KPASSWD_MALFORMED, + "out out memory copying password"); + goto out; + } + + if (chpw.targname == NULL && chpw.targrealm != NULL) { + krb5_warn (context, ret, "kadm5_init_with_password_ctx"); + reply_priv (auth_context, s, sa, sa_size, + KRB5_KPASSWD_MALFORMED, + "targrealm but not targname"); + goto out; + } + + if (chpw.targname) { + krb5_principal_data princ; + + memset(&princ, 0, sizeof (princ)); + princ.name = *chpw.targname; + princ.realm = *chpw.targrealm; + if (princ.realm == NULL) { + ret = krb5_get_default_realm(context, &princ.realm); + + if (ret) { + krb5_warnx (context, + "kadm5_init_with_password_ctx: " + "failed to allocate realm"); + reply_priv (auth_context, s, sa, sa_size, + KRB5_KPASSWD_SOFTERROR, + "failed to allocate realm"); + goto out; + } + } + ret = krb5_copy_principal(context, &princ, &principal); + if (*chpw.targrealm == NULL) + free(princ.realm); + if (ret) { + krb5_warn(context, ret, "krb5_copy_principal"); + reply_priv(auth_context, s, sa, sa_size, + KRB5_KPASSWD_HARDERROR, + "failed to allocate principal"); + goto out; + } + } else + principal = admin_principal; + } else { + krb5_warnx (context, "kadm5_init_with_password_ctx: unknown proto"); + reply_priv (auth_context, s, sa, sa_size, + KRB5_KPASSWD_HARDERROR, + "Unknown protocol used"); + return; + } + + ret = krb5_unparse_name (context, admin_principal, &admin); + if (ret) { + krb5_warn (context, ret, "unparse_name failed"); + reply_priv (auth_context, s, sa, sa_size, + KRB5_KPASSWD_HARDERROR, "out of memory error"); + goto out; + } + + conf.realm = principal->realm; + conf.mask |= KADM5_CONFIG_REALM; + + ret = kadm5_init_with_password_ctx(context, + admin, + NULL, + KADM5_ADMIN_SERVICE, + &conf, 0, 0, + &kadm5_handle); + if (ret) { + krb5_warn (context, ret, "kadm5_init_with_password_ctx"); + reply_priv (auth_context, s, sa, sa_size, 2, + "Internal error"); + goto out; + } + + ret = krb5_unparse_name(context, principal, &client); + if (ret) { + krb5_warn (context, ret, "unparse_name failed"); + reply_priv (auth_context, s, sa, sa_size, + KRB5_KPASSWD_HARDERROR, "out of memory error"); + goto out; + } + + if (krb5_principal_compare(context, admin_principal, principal) == FALSE) { + ret = _kadm5_acl_check_permission(kadm5_handle, KADM5_PRIV_CPW, + principal); + if (ret) { + krb5_warn (context, ret, + "Check ACL failed for %s for changing %s password", + admin, client); + reply_priv (auth_context, s, sa, sa_size, + KRB5_KPASSWD_HARDERROR, "permission denied"); + goto out; + } + krb5_warnx (context, "%s is changing password for %s", admin, client); + } else { + krb5_warnx (context, "Changing password for %s", client); + } + + ret = krb5_data_realloc(pwd_data, pwd_data->length + 1); + if (ret) { + krb5_warn (context, ret, "malloc: out of memory"); + reply_priv (auth_context, s, sa, sa_size, KRB5_KPASSWD_HARDERROR, + "Internal error"); + goto out; + } + tmp = pwd_data->data; + tmp[pwd_data->length - 1] = '\0'; + + ret = kadm5_s_chpass_principal_cond (kadm5_handle, principal, 1, tmp); + krb5_free_data (context, pwd_data); + pwd_data = NULL; + if (ret) { + const char *str = krb5_get_error_message(context, ret); + + switch (ret) { + case KADM5_PASS_Q_TOOSHORT: + case KADM5_PASS_Q_CLASS: + case KADM5_PASS_Q_DICT: + case KADM5_PASS_Q_GENERIC: + krb5_warnx(context, + "%s didn't pass password quality check with error: %s", + client, str); + break; + default: + krb5_warnx(context, "kadm5_s_chpass_principal_cond: %s", str); + } + reply_priv (auth_context, s, sa, sa_size, KRB5_KPASSWD_SOFTERROR, + str ? str : "Internal error"); + krb5_free_error_message(context, str); + goto out; + } + reply_priv (auth_context, s, sa, sa_size, KRB5_KPASSWD_SUCCESS, + "Password changed"); +out: + free_ChangePasswdDataMS(&chpw); + if (principal != admin_principal) + krb5_free_principal(context, principal); + if (admin) + free(admin); + if (client) + free(client); + if (pwd_data) + krb5_free_data(context, pwd_data); + if (kadm5_handle) + kadm5_destroy (kadm5_handle); +} + +static int +verify (krb5_auth_context *auth_context, + krb5_keytab keytab, + krb5_ticket **ticket, + krb5_data *out_data, + uint16_t *version, + int s, + struct sockaddr *sa, + int sa_size, + u_char *msg, + size_t len, + krb5_address *client_addr) +{ + krb5_error_code ret; + uint16_t pkt_len, pkt_ver, ap_req_len; + krb5_data ap_req_data; + krb5_data krb_priv_data; + krb5_const_realm client_realm; + krb5_principal sprinc; + int same; + + /* + * Only send an error reply if the request passes basic length + * verification. Otherwise, kpasswdd would reply to every UDP packet, + * allowing an attacker to set up a ping-pong DoS attack via a spoofed UDP + * packet with a source address of another UDP service that also replies + * to every packet. + * + * Also suppress the error reply if ap_req_len is 0, which indicates + * either an invalid request or an error packet. An error packet may be + * the result of a ping-pong attacker pointing us at another kpasswdd. + */ + pkt_len = (msg[0] << 8) | (msg[1]); + pkt_ver = (msg[2] << 8) | (msg[3]); + ap_req_len = (msg[4] << 8) | (msg[5]); + if (pkt_len != len) { + krb5_warnx (context, "Strange len: %ld != %ld", + (long)pkt_len, (long)len); + return 1; + } + if (ap_req_len == 0) { + krb5_warnx (context, "Request is error packet (ap_req_len == 0)"); + return 1; + } + if (pkt_ver != KRB5_KPASSWD_VERS_CHANGEPW && + pkt_ver != KRB5_KPASSWD_VERS_SETPW) { + krb5_warnx (context, "Bad version (%d)", pkt_ver); + reply_error (NULL, s, sa, sa_size, 0, 1, "Wrong program version"); + return 1; + } + *version = pkt_ver; + + ap_req_data.data = msg + 6; + ap_req_data.length = ap_req_len; + + ret = krb5_rd_req (context, + auth_context, + &ap_req_data, + NULL, + keytab, + NULL, + ticket); + if (ret) { + krb5_warn (context, ret, "krb5_rd_req"); + reply_error (NULL, s, sa, sa_size, ret, 3, "Authentication failed"); + return 1; + } + + if (!(*ticket)->ticket.flags.initial) { + krb5_warnx(context, "initial flag not set"); + reply_error((*ticket)->server->realm, s, sa, sa_size, ret, 1, + "Bad request"); + goto out; + } + + /* + * The service principal must be kadmin/changepw@CLIENT-REALM, there + * is no reason to require the KDC's default realm(s) to be the same + * as the realm(s) it serves. The only potential issue is when a KDC + * is a master for realm A and a slave for realm B, in which case it + * should not accept requests to change passwords for realm B, these + * should be sent to realm B's master. This same issue is present in + * the checks that only accepted local realms, there is no new risk. + */ + + client_realm = krb5_principal_get_realm(context, (*ticket)->client); + ret = krb5_make_principal(context, &sprinc, client_realm, + "kadmin", "changepw", NULL); + if (ret) + goto out; + same = krb5_principal_compare(context, sprinc, (*ticket)->server); + krb5_free_principal(context, sprinc); + + if (!same) { + char *sname; + + if (krb5_unparse_name(context, (*ticket)->server, &sname) != 0) + sname = NULL; + krb5_warnx(context, "Invalid kpasswd service principal %s", + sname ? sname : "<enomem>"); + free(sname); + reply_error(NULL, s, sa, sa_size, ret, 1, "Bad request"); + goto out; + } + krb_priv_data.data = msg + 6 + ap_req_len; + krb_priv_data.length = len - 6 - ap_req_len; + + /* + * Only enforce client addresses on on tickets with addresses. If + * its addressless, we are guessing its behind NAT and really + * can't know this information. + */ + + if ((*ticket)->ticket.caddr && (*ticket)->ticket.caddr->len > 0) { + ret = krb5_auth_con_setaddrs (context, *auth_context, + NULL, client_addr); + if (ret) { + krb5_warn (context, ret, "krb5_auth_con_setaddr(this)"); + goto out; + } + } + + ret = krb5_rd_priv (context, + *auth_context, + &krb_priv_data, + out_data, + NULL); + + if (ret) { + krb5_warn (context, ret, "krb5_rd_priv"); + reply_error ((*ticket)->server->realm, s, sa, sa_size, ret, 3, + "Bad request"); + goto out; + } + return 0; +out: + krb5_free_ticket (context, *ticket); + ticket = NULL; + return 1; +} + +static void +process (krb5_keytab keytab, + int s, + krb5_address *this_addr, + struct sockaddr *sa, + int sa_size, + u_char *msg, + int len) +{ + krb5_error_code ret; + krb5_auth_context auth_context = NULL; + krb5_data out_data; + krb5_ticket *ticket; + krb5_address other_addr; + uint16_t version; + + memset(&other_addr, 0, sizeof(other_addr)); + krb5_data_zero (&out_data); + + ret = krb5_auth_con_init (context, &auth_context); + if (ret) { + krb5_warn (context, ret, "krb5_auth_con_init"); + return; + } + + krb5_auth_con_setflags (context, auth_context, + KRB5_AUTH_CONTEXT_DO_SEQUENCE); + + ret = krb5_sockaddr2address (context, sa, &other_addr); + if (ret) { + krb5_warn (context, ret, "krb5_sockaddr2address"); + goto out; + } + + ret = krb5_auth_con_setaddrs (context, auth_context, this_addr, NULL); + if (ret) { + krb5_warn (context, ret, "krb5_auth_con_setaddr(this)"); + goto out; + } + + if (verify (&auth_context, keytab, &ticket, &out_data, + &version, s, sa, sa_size, msg, len, &other_addr) == 0) + { + /* + * We always set the client_addr, to assume that the client + * can ignore it if it choose to do so (just the server does + * so for addressless tickets). + */ + ret = krb5_auth_con_setaddrs (context, auth_context, + this_addr, &other_addr); + if (ret) { + krb5_warn (context, ret, "krb5_auth_con_setaddr(other)"); + goto out; + } + + change (auth_context, + ticket->client, + version, + s, + sa, sa_size, + &out_data); + memset (out_data.data, 0, out_data.length); + krb5_free_ticket (context, ticket); + } + +out: + krb5_free_address(context, &other_addr); + krb5_data_free(&out_data); + krb5_auth_con_free(context, auth_context); +} + +static const char *check_library = NULL; +static const char *check_function = NULL; +static getarg_strings policy_libraries = { 0, NULL }; +static char sHDB[] = "HDBGET:"; +static char *keytab_str = sHDB; +static char *realm_str; +static int version_flag; +static int help_flag; +static int detach_from_console; +static int daemon_child = -1; +static char *port_str; +static char *config_file; + +struct getargs args[] = { +#ifdef HAVE_DLOPEN + { "check-library", 0, arg_string, &check_library, + "library to load password check function from", "library" }, + { "check-function", 0, arg_string, &check_function, + "password check function to load", "function" }, + { "policy-libraries", 0, arg_strings, &policy_libraries, + "password check function to load", "function" }, +#endif + { "addresses", 0, arg_strings, &addresses_str, + "addresses to listen on", "list of addresses" }, + { "detach", 0, arg_flag, &detach_from_console, + "detach from console", NULL }, + { "daemon-child", 0 , arg_integer, &daemon_child, + "private argument, do not use", NULL }, + { "keytab", 'k', arg_string, &keytab_str, + "keytab to get authentication key from", "kspec" }, + { "config-file", 'c', arg_string, &config_file, NULL, NULL }, + { "realm", 'r', arg_string, &realm_str, "default realm", "realm" }, + { "port", 'p', arg_string, &port_str, "port", NULL }, + { "version", 0, arg_flag, &version_flag, NULL, NULL }, + { "help", 0, arg_flag, &help_flag, NULL, NULL } +}; +int num_args = sizeof(args) / sizeof(args[0]); + +static int +doit(krb5_keytab keytab, int port) +{ + krb5_error_code ret; + int *sockets; + int maxfd; + krb5_addresses addrs; + unsigned n, i; + fd_set real_fdset; + struct sockaddr_storage __ss; + struct sockaddr *sa = (struct sockaddr *)&__ss; + + if (explicit_addresses.len) { + addrs = explicit_addresses; + } else { + ret = krb5_get_all_server_addrs(context, &addrs); + if (ret) + krb5_err(context, 1, ret, "krb5_get_all_server_addrs"); + } + n = addrs.len; + + sockets = malloc(n * sizeof(*sockets)); + if (sockets == NULL) + krb5_errx(context, 1, "out of memory"); + maxfd = -1; + FD_ZERO(&real_fdset); + for (i = 0; i < n; ++i) { + krb5_socklen_t sa_size = sizeof(__ss); + + krb5_addr2sockaddr(context, &addrs.val[i], sa, &sa_size, port); + + sockets[i] = socket(__ss.ss_family, SOCK_DGRAM, 0); + if (sockets[i] < 0) + krb5_err(context, 1, errno, "socket"); + if (bind(sockets[i], sa, sa_size) < 0) { + char str[128]; + size_t len; + int save_errno = errno; + + ret = krb5_print_address(&addrs.val[i], str, sizeof(str), &len); + if (ret) + strlcpy(str, "unknown address", sizeof(str)); + krb5_warn(context, save_errno, "bind(%s)", str); + continue; + } + maxfd = max(maxfd, sockets[i]); + if (maxfd >= FD_SETSIZE) + krb5_errx(context, 1, "fd too large"); + FD_SET(sockets[i], &real_fdset); + } + if (maxfd == -1) + krb5_errx(context, 1, "No sockets!"); + + roken_detach_finish(NULL, daemon_child); + + while (exit_flag == 0) { + krb5_ssize_t retx; + fd_set fdset = real_fdset; + + retx = select(maxfd + 1, &fdset, NULL, NULL, NULL); + if (retx < 0) { + if (errno == EINTR) + continue; + else + krb5_err(context, 1, errno, "select"); + } + for (i = 0; i < n; ++i) + if (FD_ISSET(sockets[i], &fdset)) { + u_char buf[BUFSIZ]; + socklen_t addrlen = sizeof(__ss); + + retx = recvfrom(sockets[i], buf, sizeof(buf), 0, + sa, &addrlen); + if (retx < 0) { + if (errno == EINTR) + break; + else + krb5_err(context, 1, errno, "recvfrom"); + } + + process(keytab, sockets[i], + &addrs.val[i], + sa, addrlen, + buf, retx); + } + } + + for (i = 0; i < n; ++i) + close(sockets[i]); + free(sockets); + + krb5_free_addresses(context, &addrs); + krb5_kt_close(context, keytab); + krb5_free_context(context); + return 0; +} + +static RETSIGTYPE +sigterm(int sig) +{ + exit_flag = 1; +} + +int +main(int argc, char **argv) +{ + krb5_keytab keytab; + krb5_error_code ret; + char **files; + int port, i; + int aret; + + krb5_program_setup(&context, argc, argv, args, num_args, NULL); + + if (help_flag) + krb5_std_usage(0, args, num_args); + + if (version_flag) { + print_version(NULL); + exit(0); + } + + if (detach_from_console > 0 && daemon_child == -1) + daemon_child = roken_detach_prep(argc, argv, "--daemon-child"); + + if (config_file == NULL) { + aret = asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context)); + if (aret == -1) + errx(1, "out of memory"); + } + + ret = krb5_prepend_config_files_default(config_file, &files); + if (ret) + krb5_err(context, 1, ret, "getting configuration files"); + + ret = krb5_set_config_files(context, files); + krb5_free_config_files(files); + if (ret) + krb5_err(context, 1, ret, "reading configuration files"); + + if (realm_str) + krb5_set_default_realm(context, realm_str); + + krb5_openlog(context, "kpasswdd", &log_facility); + krb5_set_warn_dest(context, log_facility); + + if (port_str != NULL) { + struct servent *s = roken_getservbyname(port_str, "udp"); + + if (s != NULL) + port = s->s_port; + else { + char *ptr; + + port = strtol(port_str, &ptr, 10); + if (port == 0 && ptr == port_str) + krb5_errx(context, 1, "bad port `%s'", port_str); + port = htons(port); + } + } else + port = krb5_getportbyname(context, "kpasswd", "udp", KPASSWD_PORT); + + ret = krb5_kt_register(context, &hdb_get_kt_ops); + if (ret) + krb5_err(context, 1, ret, "krb5_kt_register"); + + ret = krb5_kt_resolve(context, keytab_str, &keytab); + if (ret) + krb5_err(context, 1, ret, "%s", keytab_str); + + kadm5_setup_passwd_quality_check(context, check_library, check_function); + + for (i = 0; i < policy_libraries.num_strings; i++) { + ret = kadm5_add_passwd_quality_verifier(context, + policy_libraries.strings[i]); + if (ret) + krb5_err(context, 1, ret, "kadm5_add_passwd_quality_verifier"); + } + ret = kadm5_add_passwd_quality_verifier(context, NULL); + if (ret) + krb5_err(context, 1, ret, "kadm5_add_passwd_quality_verifier"); + + + explicit_addresses.len = 0; + + if (addresses_str.num_strings) { + int j; + + for (j = 0; j < addresses_str.num_strings; ++j) + add_one_address(addresses_str.strings[j], j == 0); + free_getarg_strings(&addresses_str); + } else { + char **foo = krb5_config_get_strings(context, NULL, + "kdc", "addresses", NULL); + + if (foo != NULL) { + add_one_address(*foo++, TRUE); + while (*foo) + add_one_address(*foo++, FALSE); + } + } + +#ifdef HAVE_SIGACTION + { + struct sigaction sa; + + sa.sa_flags = 0; + sa.sa_handler = sigterm; + sigemptyset(&sa.sa_mask); + + sigaction(SIGINT, &sa, NULL); + sigaction(SIGTERM, &sa, NULL); + } +#else + signal(SIGINT, sigterm); + signal(SIGTERM, sigterm); +#endif + + rk_pidfile(NULL); + + return doit(keytab, port); +} |