a9b1b8e53f
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4458 ec53bebd-3082-4978-b11e-865c3cabbd6b
273 lines
7.3 KiB
C
273 lines
7.3 KiB
C
/*
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* Copyright (c) 1997, 1998 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Kungliga Tekniska
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* Högskolan and its contributors.
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*
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* 4. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "kadm5_locl.h"
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RCSID("$Id$");
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static int
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make_signal_socket (krb5_context context)
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{
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struct sockaddr_un addr;
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int fd;
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fd = socket (AF_UNIX, SOCK_DGRAM, 0);
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if (fd < 0)
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krb5_err (context, 1, errno, "socket AF_UNIX");
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memset (&addr, 0, sizeof(addr));
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addr.sun_family = AF_UNIX;
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strncpy (addr.sun_path, KADM5_LOG_SIGNAL, sizeof(addr.sun_path));
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addr.sun_path[sizeof(addr.sun_path) - 1] = '\0';
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unlink (addr.sun_path);
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if (bind (fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
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krb5_err (context, 1, errno, "bind %s", addr.sun_path);
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return fd;
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}
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static int
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make_listen_socket (krb5_context context)
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{
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int fd;
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int one = 1;
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struct sockaddr_in addr;
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fd = socket (AF_INET, SOCK_STREAM, 0);
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if (fd < 0)
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krb5_err (context, 1, errno, "socket AF_INET");
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setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one));
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memset (&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(4711);
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if(bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
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krb5_err (context, 1, errno, "bind");
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if (listen(fd, SOMAXCONN) < 0)
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krb5_err (context, 1, errno, "listen");
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return fd;
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}
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struct slave {
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int fd;
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struct sockaddr_in addr;
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char *name;
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krb5_auth_context ac;
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u_int32_t version;
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struct slave *next;
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};
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typedef struct slave slave;
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static int
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check_acl (krb5_context context, const char *name)
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{
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FILE *fp;
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char buf[256];
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int ret = 1;
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fp = fopen (KADM5_SLAVE_ACL, "r");
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if (fp == NULL)
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return 1;
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while (fgets(buf, sizeof(buf), fp) != NULL) {
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if (buf[strlen(buf) - 1 ] == '\0')
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buf[strlen(buf) - 1 ] = '\0';
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if (strcmp (buf, name) == 0) {
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ret = 0;
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break;
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}
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}
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fclose (fp);
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return ret;
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}
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static void
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add_slave (krb5_context context, slave **root, int fd)
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{
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krb5_principal server;
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krb5_error_code ret;
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slave *s;
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int addr_len;
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krb5_ticket *ticket = NULL;
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char hostname[128];
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s = malloc(sizeof(*s));
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if (s == NULL) {
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krb5_warnx (context, "add_slave: no memory");
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return;
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}
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s->name = NULL;
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s->ac = NULL;
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addr_len = sizeof(s->addr);
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s->fd = accept (fd, (struct sockaddr *)&s->addr, &addr_len);
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if (s->fd < 0) {
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krb5_warn (context, errno, "accept");
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goto error;
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}
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gethostname(hostname, sizeof(hostname));
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ret = krb5_sname_to_principal (context, hostname, IPROP_NAME,
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KRB5_NT_SRV_HST, &server);
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if (ret) {
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krb5_warn (context, ret, "krb5_sname_to_principal");
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goto error;
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}
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ret = krb5_recvauth (context, &s->ac, &s->fd,
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IPROP_VERSION, server, 0, NULL, &ticket);
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krb5_free_principal (context, server);
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if (ret) {
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krb5_warn (context, ret, "krb5_recvauth");
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goto error;
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}
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ret = krb5_unparse_name (context, ticket->client, &s->name);
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if (ret) {
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krb5_warn (context, ret, "krb5_unparse_name");
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goto error;
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}
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if (check_acl (context, s->name)) {
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krb5_warnx (context, "%s not in acl", s->name);
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goto error;
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}
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krb5_free_ticket (context, ticket);
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printf ("connection from %s\n", s->name);
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s->version = 0;
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s->next = *root;
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*root = s;
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return;
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error:
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if (s->name)
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free (s->name);
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if (s->ac)
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krb5_auth_con_free(context, s->ac);
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if (ticket)
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krb5_free_ticket (context, ticket);
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close (s->fd);
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free(s);
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}
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int
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main(int argc, char **argv)
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{
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krb5_error_code ret;
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krb5_context context;
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void *kadm_handle;
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kadm5_server_context *server_context;
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kadm5_config_params conf;
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int signal_fd, listen_fd;
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int log_fd;
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slave *slaves = NULL;
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u_int32_t version, old_version = 0;
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set_progname(argv[0]);
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krb5_init_context(&context);
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memset(&conf, 0, sizeof(conf));
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ret = kadm5_s_init_with_password_ctx (context,
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KADM5_ADMIN_SERVICE,
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"password",
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KADM5_ADMIN_SERVICE,
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&conf, 0, 0,
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&kadm_handle);
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if (ret)
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krb5_err (context, 1, ret, "kadm5_s_init_with_password_ctx");
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server_context = (kadm5_server_context *)kadm_handle;
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log_fd = open (server_context->log_context.log_file, O_RDONLY, 0);
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if (log_fd < 0)
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krb5_err (context, 1, errno, "open %s",
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server_context->log_context.log_file);
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signal_fd = make_signal_socket (context);
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listen_fd = make_listen_socket (context);
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for (;;) {
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slave *p;
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fd_set readset;
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int max_fd = 0;
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struct timeval to = {30, 0};
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u_int32_t vers;
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FD_ZERO(&readset);
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FD_SET(signal_fd, &readset);
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max_fd = max(max_fd, signal_fd);
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FD_SET(listen_fd, &readset);
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max_fd = max(max_fd, listen_fd);
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for (p = slaves; p != NULL; p = p->next) {
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FD_SET(p->fd, &readset);
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max_fd = max(max_fd, p->fd);
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}
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ret = select (max_fd + 1,
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&readset, NULL, NULL, &to);
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if (ret < 0) {
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if (errno == EINTR)
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continue;
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else
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krb5_err (context, 1, errno, "select");
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}
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kadm5_log_get_version (log_fd, &version);
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if (version > old_version)
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; /* XXX - send out updates */
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if (ret && FD_ISSET(signal_fd, &readset)) {
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struct sockaddr_un peer_addr;
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size_t peer_len = sizeof(peer_addr);
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if(recvfrom(signal_fd, &vers, sizeof(vers), 0,
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(struct sockaddr *)&peer_addr, &peer_len) < 0) {
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krb5_warn (context, errno, "recvfrom");
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continue;
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}
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printf ("signal: %u\n", vers);
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--ret;
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}
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if (ret && FD_ISSET(listen_fd, &readset)) {
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add_slave (context, &slaves, listen_fd);
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--ret;
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}
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for(p = slaves; ret-- && p != NULL; p = p->next)
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if (FD_ISSET(p->fd, &readset)) {
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/* XXX */
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}
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}
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return 0;
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}
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