diff options
author | markm <markm@FreeBSD.org> | 2000-01-09 20:58:00 +0000 |
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committer | markm <markm@FreeBSD.org> | 2000-01-09 20:58:00 +0000 |
commit | 5f68254a360fdb4f3ebc30f6ad6507556425dd0a (patch) | |
tree | a96b9cd24173c10bba3fd7e2acf5d68e5bb0773e /crypto/heimdal/lib/kadm5/ipropd_master.c | |
parent | d88c9767e1793993cc2242ccfb9a8ba002a061c6 (diff) | |
parent | 4ecbd6db44d79348bc815f31096e53104f50838b (diff) | |
download | FreeBSD-src-5f68254a360fdb4f3ebc30f6ad6507556425dd0a.zip FreeBSD-src-5f68254a360fdb4f3ebc30f6ad6507556425dd0a.tar.gz |
This commit was generated by cvs2svn to compensate for changes in r55682,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'crypto/heimdal/lib/kadm5/ipropd_master.c')
-rw-r--r-- | crypto/heimdal/lib/kadm5/ipropd_master.c | 422 |
1 files changed, 422 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/kadm5/ipropd_master.c b/crypto/heimdal/lib/kadm5/ipropd_master.c new file mode 100644 index 0000000..b2e71a7 --- /dev/null +++ b/crypto/heimdal/lib/kadm5/ipropd_master.c @@ -0,0 +1,422 @@ +/* + * Copyright (c) 1997, 1998 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 "iprop.h" + +RCSID("$Id: ipropd_master.c,v 1.12 1999/12/02 17:05:06 joda Exp $"); + +static int +make_signal_socket (krb5_context context) +{ + struct sockaddr_un addr; + int fd; + + fd = socket (AF_UNIX, SOCK_DGRAM, 0); + if (fd < 0) + krb5_err (context, 1, errno, "socket AF_UNIX"); + memset (&addr, 0, sizeof(addr)); + addr.sun_family = AF_UNIX; + strncpy (addr.sun_path, KADM5_LOG_SIGNAL, sizeof(addr.sun_path)); + addr.sun_path[sizeof(addr.sun_path) - 1] = '\0'; + unlink (addr.sun_path); + if (bind (fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) + krb5_err (context, 1, errno, "bind %s", addr.sun_path); + return fd; +} + +static int +make_listen_socket (krb5_context context) +{ + int fd; + int one = 1; + struct sockaddr_in addr; + + fd = socket (AF_INET, SOCK_STREAM, 0); + if (fd < 0) + krb5_err (context, 1, errno, "socket AF_INET"); + setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); + memset (&addr, 0, sizeof(addr)); + addr.sin_family = AF_INET; + addr.sin_port = htons(4711); + if(bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) + krb5_err (context, 1, errno, "bind"); + if (listen(fd, SOMAXCONN) < 0) + krb5_err (context, 1, errno, "listen"); + return fd; +} + +struct slave { + int fd; + struct sockaddr_in addr; + char *name; + krb5_auth_context ac; + u_int32_t version; + struct slave *next; +}; + +typedef struct slave slave; + +static int +check_acl (krb5_context context, const char *name) +{ + FILE *fp; + char buf[256]; + int ret = 1; + + fp = fopen (KADM5_SLAVE_ACL, "r"); + if (fp == NULL) + return 1; + while (fgets(buf, sizeof(buf), fp) != NULL) { + if (buf[strlen(buf) - 1 ] == '\n') + buf[strlen(buf) - 1 ] = '\0'; + if (strcmp (buf, name) == 0) { + ret = 0; + break; + } + } + fclose (fp); + return ret; +} + +static void +add_slave (krb5_context context, slave **root, int fd) +{ + krb5_principal server; + krb5_error_code ret; + slave *s; + int addr_len; + krb5_ticket *ticket = NULL; + char hostname[128]; + + s = malloc(sizeof(*s)); + if (s == NULL) { + krb5_warnx (context, "add_slave: no memory"); + return; + } + s->name = NULL; + s->ac = NULL; + + addr_len = sizeof(s->addr); + s->fd = accept (fd, (struct sockaddr *)&s->addr, &addr_len); + if (s->fd < 0) { + krb5_warn (context, errno, "accept"); + goto error; + } + gethostname(hostname, sizeof(hostname)); + ret = krb5_sname_to_principal (context, hostname, IPROP_NAME, + KRB5_NT_SRV_HST, &server); + if (ret) { + krb5_warn (context, ret, "krb5_sname_to_principal"); + goto error; + } + + ret = krb5_recvauth (context, &s->ac, &s->fd, + IPROP_VERSION, server, 0, NULL, &ticket); + krb5_free_principal (context, server); + if (ret) { + krb5_warn (context, ret, "krb5_recvauth"); + goto error; + } + ret = krb5_unparse_name (context, ticket->client, &s->name); + if (ret) { + krb5_warn (context, ret, "krb5_unparse_name"); + goto error; + } + if (check_acl (context, s->name)) { + krb5_warnx (context, "%s not in acl", s->name); + goto error; + } + krb5_free_ticket (context, ticket); + printf ("connection from %s\n", s->name); + + s->version = 0; + s->next = *root; + *root = s; + return; +error: + if (s->name) + free (s->name); + if (s->ac) + krb5_auth_con_free(context, s->ac); + if (ticket) + krb5_free_ticket (context, ticket); + close (s->fd); + free(s); +} + +static void +remove_slave (krb5_context context, slave *s, slave **root) +{ + slave **p; + + close (s->fd); + free (s->name); + krb5_auth_con_free (context, s->ac); + + for (p = root; *p; p = &(*p)->next) + if (*p == s) { + *p = s->next; + break; + } + free (s); +} + +static int +send_complete (krb5_context context, slave *s) +{ + abort (); +} + +static int +send_diffs (krb5_context context, slave *s, int log_fd, + u_int32_t current_version) +{ + krb5_storage *sp, *data_sp; + u_int32_t ver; + time_t timestamp; + enum kadm_ops op; + u_int32_t len; + off_t right, left; + krb5_data data; + krb5_data priv_data; + int ret = 0; + + if (s->version == current_version) + return 0; + + sp = kadm5_log_goto_end (log_fd); + right = sp->seek(sp, 0, SEEK_CUR); + printf ("%ld, looking for %d\n", (long)right, s->version); + for (;;) { + if (kadm5_log_previous (sp, &ver, ×tamp, &op, &len)) + abort (); + printf ("version = %d\n", ver); + left = sp->seek(sp, -16, SEEK_CUR); + if (ver == s->version) + return 0; + if (ver == s->version + 1) + break; + if (left == 0) + return send_complete (context, s); + } + krb5_data_alloc (&data, right - left + 4); + sp->fetch (sp, (char *)data.data + 4, data.length - 4); + krb5_storage_free(sp); + + _krb5_put_int(data.data, FOR_YOU, 4); + + ret = krb5_mk_priv (context, s->ac, &data, &priv_data, NULL); + krb5_data_free(&data); + if (ret) { + krb5_warn (context, ret, "krb_mk_priv"); + return 0; + } + + ret = krb5_write_message (context, &s->fd, &priv_data); + krb5_data_free (&priv_data); + if (ret) { + krb5_warn (context, ret, "krb5_write_message"); + return 1; + } + return 0; +} + +static int +process_msg (krb5_context context, slave *s, int log_fd, + u_int32_t current_version) +{ + int ret = 0; + krb5_data in, out; + krb5_storage *sp; + int32_t tmp; + + ret = krb5_read_message (context, &s->fd, &in); + if (ret) + return 1; + + if(in.length == 0) { + krb5_warnx(context, "process_msg: short message"); + return 1; + } + + ret = krb5_rd_priv (context, s->ac, &in, &out, NULL); + krb5_data_free (&in); + if (ret) { + krb5_warn (context, ret, "krb5_rd_priv"); + return 1; + } + + sp = krb5_storage_from_mem (out.data, out.length); + krb5_ret_int32 (sp, &tmp); + switch (tmp) { + case I_HAVE : + krb5_ret_int32 (sp, &tmp); + s->version = tmp; + ret = send_diffs (context, s, log_fd, current_version); + break; + case FOR_YOU : + default : + krb5_warnx (context, "Ignoring command %d", tmp); + break; + } + + krb5_data_free (&out); + return ret; +} + +char *realm; +int version_flag; +int help_flag; +struct getargs args[] = { + { "realm", 'r', arg_string, &realm }, + { "version", 0, arg_flag, &version_flag }, + { "help", 0, arg_flag, &help_flag } +}; +int num_args = sizeof(args) / sizeof(args[0]); + +int +main(int argc, char **argv) +{ + krb5_error_code ret; + krb5_context context; + void *kadm_handle; + kadm5_server_context *server_context; + kadm5_config_params conf; + int signal_fd, listen_fd; + int log_fd; + slave *slaves = NULL; + u_int32_t current_version, old_version = 0; + + int optind; + + optind = 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); + } + + memset(&conf, 0, sizeof(conf)); + if(realm) { + conf.mask |= KADM5_CONFIG_REALM; + conf.realm = realm; + } + ret = kadm5_init_with_password_ctx (context, + KADM5_ADMIN_SERVICE, + NULL, + KADM5_ADMIN_SERVICE, + &conf, 0, 0, + &kadm_handle); + if (ret) + krb5_err (context, 1, ret, "kadm5_init_with_password_ctx"); + + server_context = (kadm5_server_context *)kadm_handle; + + log_fd = open (server_context->log_context.log_file, O_RDONLY, 0); + if (log_fd < 0) + krb5_err (context, 1, errno, "open %s", + server_context->log_context.log_file); + + signal_fd = make_signal_socket (context); + listen_fd = make_listen_socket (context); + + for (;;) { + slave *p; + fd_set readset; + int max_fd = 0; + struct timeval to = {30, 0}; + u_int32_t vers; + + FD_ZERO(&readset); + FD_SET(signal_fd, &readset); + max_fd = max(max_fd, signal_fd); + FD_SET(listen_fd, &readset); + max_fd = max(max_fd, listen_fd); + + for (p = slaves; p != NULL; p = p->next) { + FD_SET(p->fd, &readset); + max_fd = max(max_fd, p->fd); + } + + ret = select (max_fd + 1, + &readset, NULL, NULL, &to); + if (ret < 0) { + if (errno == EINTR) + continue; + else + krb5_err (context, 1, errno, "select"); + } + + if (ret == 0) { + old_version = current_version; + kadm5_log_get_version (log_fd, ¤t_version); + + if (current_version > old_version) + for (p = slaves; p != NULL; p = p->next) + send_diffs (context, p, log_fd, current_version); + } + + if (ret && FD_ISSET(signal_fd, &readset)) { + struct sockaddr_un peer_addr; + int peer_len = sizeof(peer_addr); + + if(recvfrom(signal_fd, &vers, sizeof(vers), 0, + (struct sockaddr *)&peer_addr, &peer_len) < 0) { + krb5_warn (context, errno, "recvfrom"); + continue; + } + printf ("signal: %u\n", vers); + --ret; + old_version = current_version; + kadm5_log_get_version (log_fd, ¤t_version); + for (p = slaves; p != NULL; p = p->next) + send_diffs (context, p, log_fd, current_version); + } + + for(p = slaves; p != NULL && ret--; p = p->next) + if (FD_ISSET(p->fd, &readset)) { + if(process_msg (context, p, log_fd, current_version)) + remove_slave (context, p, &slaves); + } + + if (ret && FD_ISSET(listen_fd, &readset)) { + add_slave (context, &slaves, listen_fd); + --ret; + } + + } + + return 0; +} |