865bab938a
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@7861 ec53bebd-3082-4978-b11e-865c3cabbd6b
260 lines
6.1 KiB
C
260 lines
6.1 KiB
C
/*
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* Copyright (c) 1995 - 2000 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. 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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/* $Id$ */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif /* HAVE_CONFIG_H */
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <errno.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#ifdef HAVE_GRP_H
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#include <grp.h>
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#endif
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#ifdef HAVE_SYSLOG_H
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#include <syslog.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#elif defined(HAVE_SYS_TIME_H)
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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#include <sys/resource.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETINET_TCP_H
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#include <netinet/tcp.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_SYS_UN_H
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#include <sys/un.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xlib.h>
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#include <X11/Xauth.h>
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#ifdef HAVE_SYS_STREAM_H
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#include <sys/stream.h>
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#endif
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#ifdef HAVE_SYS_STROPTS_H
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#include <sys/stropts.h>
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#endif
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/* as far as we know, this is only used with later versions of Slowlaris */
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#if SunOS >= 50 && defined(HAVE_SYS_STROPTS_H) && defined(HAVE_FATTACH) && defined(I_PUSH)
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#define MAY_HAVE_X11_PIPES
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#endif
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#ifdef SOCKS
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#include <socks.h>
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/* This doesn't belong here. */
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struct tm *localtime(const time_t *);
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struct hostent *gethostbyname(const char *);
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#endif
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#ifdef KRB4
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#include <krb.h>
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#include <prot.h>
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#endif
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#ifdef KRB5
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#include <krb5.h>
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#endif
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#include <err.h>
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#include <getarg.h>
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#include <roken.h>
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struct x_socket {
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char *pathname;
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int fd;
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enum {
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LISTENP = 0x80,
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TCP = LISTENP | 1,
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UNIX_SOCKET = LISTENP | 2,
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STREAM_PIPE = 3
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} flags;
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};
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extern char x_socket[];
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extern u_int32_t display_num;
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extern char display[];
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extern int display_size;
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extern char xauthfile[];
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extern int xauthfile_size;
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extern u_char cookie[];
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extern size_t cookie_len;
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int get_xsockets (int *number, struct x_socket **sockets, int tcpp);
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int chown_xsockets (int n, struct x_socket *sockets, uid_t uid, gid_t gid);
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int connect_local_xsocket (unsigned dnr);
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int create_and_write_cookie (char *xauthfile,
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size_t size,
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u_char *cookie,
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size_t sz);
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int verify_and_remove_cookies (int fd, int sock, int cookiesp);
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int replace_cookie(int xserver, int fd, char *filename, int cookiesp);
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int suspicious_address (int sock, struct sockaddr_in addr);
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#define KX_PORT 2111
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#define KX_OLD_VERSION "KXSERV.1"
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#define KX_VERSION "KXSERV.2"
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#define COOKIE_TYPE "MIT-MAGIC-COOKIE-1"
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enum { INIT = 0, ACK = 1, NEW_CONN = 2, ERROR = 3 };
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enum kx_flags { PASSIVE = 1, KEEP_ALIVE = 2 };
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typedef enum kx_flags kx_flags;
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struct kx_context {
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int (*authenticate)(struct kx_context *kc, int s);
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int (*userok)(struct kx_context *kc, char *user);
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ssize_t (*read)(struct kx_context *kc,
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int fd, void *buf, size_t len);
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ssize_t (*write)(struct kx_context *kc,
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int fd, const void *buf, size_t len);
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int (*copy_encrypted)(struct kx_context *kc,
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int fd1, int fd2);
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void (*destroy)(struct kx_context *kc);
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const char *host;
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const char *user;
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int port;
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int debug_flag;
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int keepalive_flag;
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int tcp_flag;
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struct sockaddr_in thisaddr, thataddr;
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void *data;
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};
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typedef struct kx_context kx_context;
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void
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context_set (kx_context *kc, const char *host, const char *user, int port,
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int debug_flag, int keepalive_flag, int tcp_flag);
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void
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context_destroy (kx_context *kc);
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int
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context_authenticate (kx_context *kc, int s);
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int
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context_userok (kx_context *kc, char *user);
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ssize_t
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kx_read (kx_context *kc, int fd, void *buf, size_t len);
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ssize_t
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kx_write (kx_context *kc, int fd, const void *buf, size_t len);
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int
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copy_encrypted (kx_context *kc, int fd1, int fd2);
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#ifdef KRB4
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void
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krb4_make_context (kx_context *c);
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int
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recv_v4_auth (kx_context *kc, int sock, u_char *buf);
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#endif
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#ifdef KRB5
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void
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krb5_make_context (kx_context *c);
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int
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recv_v5_auth (kx_context *kc, int sock, u_char *buf);
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#endif
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void
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fatal (kx_context *kc, int fd, char *format, ...)
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#ifdef __GNUC__
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__attribute__ ((format (printf, 3, 4)))
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#endif
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;
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#ifndef KRB4
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int
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krb_get_int(void *f, u_int32_t *to, int size, int lsb);
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int
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krb_put_int(u_int32_t from, void *to, size_t rem, int size);
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#endif
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