extern.h

linux下ftpd服务器端的源码实现

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  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.
 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 *
 *	@(#)extern.h	8.2 (Berkeley) 4/4/94
 */

#include <stdio.h>
#include <setjmp.h>
#include <sys/types.h>

extern void cwd            (const char *);
extern int  checkuser      (const char *filename, const char *name);
extern void delete         (const char *);
extern int  display_file   (const char *name, int code);
extern void dologout       (int);
extern void fatal          (const char *);
extern int  ftpd_pclose    (FILE *);
extern FILE *ftpd_popen    (char *, const char *);
#if !HAVE_DECL_GETUSERSHELL
extern char *getusershell  (void);
#endif
extern void lreply         (int, const char *, ...);
extern void makedir        (const char *);
extern void nack           (const char *);
extern void pass           (const char *);
extern void passive        (void);
extern void perror_reply   (int, const char *);
extern void pwd            (void);
extern void removedir      (const char *);
extern void renamecmd      (const char *, const char *);
extern char *renamefrom    (const char *);
extern void reply          (int, const char *, ...);
extern void retrieve       (const char *, const char *);
extern void send_file_list (const char *);
extern void setproctitle   (const char *, ...);
extern void statcmd        (void);
extern void statfilecmd    (const char *);
extern void store          (const char *, const char *, int);
extern void toolong        (int);
extern char *telnet_fgets  (char *, int, FILE *);
extern void upper          (char *);
extern void user           (const char *);
extern char *sgetsave      (const char *);

/* Exported from ftpd.c.  */
jmp_buf  errcatch;
extern struct sockaddr_in data_dest;
extern struct sockaddr_in his_addr;
extern int logged_in;
extern struct passwd *pw;
extern int guest;
extern int logging;
extern int type;
extern int form;
extern int debug;
extern int timeout;
extern int maxtimeout;
extern int pdata;
extern char *hostname;
extern char *remotehost;
extern char proctitle[];
extern int usedefault;
extern char tmpline[];

/* Exported from ftpcmd.y.  */
extern off_t restart_point;

/* Exported from server_mode.c.  */
extern int server_mode (const char *pidfile, struct sockaddr_in *phis_addr);

/* Credential for the request.  */
struct credentials
{
  char *name;
  char *homedir;
  char *rootdir;
  char *shell;
  char *remotehost;
  char *passwd;
  char *pass;
  char *message; /* Sending back custom messages.  */
  uid_t uid;
  gid_t gid;
  int guest;
  int dochroot;
  int logged_in;
#define AUTH_TYPE_PASSWD    0
#define AUTH_TYPE_PAM       1
#define AUTH_TYPE_KERBEROS  2
#define AUTH_TYPE_KERBEROS5 3
#define AUTH_TYPE_OPIE      4
  int auth_type;
};

extern struct credentials cred;
extern int  sgetcred       (const char *, struct credentials *);
extern int  auth_user      (const char *, struct credentials *);
extern int  auth_pass      (const char *, struct credentials *);

/* Exported from pam.c */
#ifdef WITH_PAM
extern int  pam_user       (const char *, struct credentials *);
extern int  pam_pass       (const char *, struct credentials *);
#endif