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Diffstat (limited to 'crypto/heimdal/lib/kadm5/ipropd_master.c')
-rw-r--r--crypto/heimdal/lib/kadm5/ipropd_master.c422
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 000000000000..b2e71a736dd2
--- /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, &timestamp, &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, &current_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, &current_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;
+}
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