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NetBSD/libexec/ftpd/extern.h
lukem 5015048190 Features: 
* Add ftpd.conf(5) directive `advertise'; change the address that is
  advertised to the client for PASV transfers. this may be useful in
  certain firewall/NAT environments.

  Feature requested in [bin/9606] by Scott Presnell.

* Add -X option; syslog wu-ftpd style xferlog messages, prefixed with
  `xferlog: '.  An example line from syslog (wrapped):
	Dec 16 18:50:24 odysseus ftpd[571]: xferlog: Sat Dec 16 18:50:24 2000
	2 localhost 3747328 /pub/WLW2K601.EXE b _ o a lukem@ FTP 0 * c

  These messages can be converted to a wu-ftpd style xferlog file
  suitable for parsing with third-party tools with something like:
	grep 'xferlog: ' /var/log/xferlog | \
	    sed -e 's/^.*xferlog: //' >wuxferlog

  The format is the same as the wu-ftpd xferlog entries (with the leading
  syslog stuff), but different from the wu-ftpd syslogged xferlog entries
  because the latter is not as easy to convert into the standard xferlog
  file format.

  The choice to only syslog the xferlog messages rather than append to
  a /var/log/xferlog file was made because the latter doesn't work to
  well in the situation where the logfile is rotated and compressed and
  a long-running ftpd still has a file-descriptor to the now nonexistant
  xferlog file, and the log message will then get lost.

  Feature requested in [bin/11651] by Hubert Feyrer.


Fixes:

* In ftpd(8), clarify the -a and -c options.

* More clarifications in ftpd.conf(5).

* Ensure that all ftpd.conf commands set a parameter back to sane defaults
  if an argument of `none' or bad settings are given.

* Support the `chroot' directive for `REAL' users too (for consistency).

* For `GUEST' users, store the supplied password in pw->pw_passwd for use
  later in the xferlog.

* If show_chdir_messages() is given a code of -1, flush the cache of
  visited directories.  Invoke show_chdir_messages(-1) in end_login().

* Only syslog session stats if logging is requested.

* Rename logcmd() -> logxfer(), and dolog() -> logremotehost().

* Use cprintf() instead of fprintf() where appropriate.

* Minor KNF, and make a couple of functions static that were declared static.
2000-12-18 02:32:50 +00:00

353 lines
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/* $NetBSD: extern.h,v 1.37 2000/12/18 02:32:51 lukem Exp $ */
/*-
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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
*/
/*-
* Copyright (c) 1997-2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (C) 1997 and 1998 WIDE Project.
* 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 project 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 PROJECT 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 PROJECT 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.
*/
#ifdef NO_LONG_LONG
# define LLF "%ld"
# define LLFP(x) "%" x "ld"
# define LLT long
# define ULLF "%lu"
# define ULLFP(x) "%" x "lu"
# define ULLT unsigned long
# define STRTOLL(x,y,z) strtol(x,y,z)
#else
# define LLF "%lld"
# define LLFP(x) "%" x "lld"
# define LLT long long
# define ULLF "%llu"
# define ULLFP(x) "%" x "llu"
# define ULLT unsigned long long
# define STRTOLL(x,y,z) strtoll(x,y,z)
#endif
void blkfree(char **);
void closedataconn(FILE *);
char *conffilename(const char *);
char **copyblk(char **);
void count_users(void);
void cprintf(FILE *, const char *, ...)
__attribute__((__format__(__printf__, 2, 3)));
void cwd(const char *);
FILE *dataconn(const char *, off_t, const char *);
void delete(const char *);
int display_file(const char *, int);
char **do_conversion(const char *);
void dologout(int);
void fatal(const char *);
void feat(void);
void format_path(char *, const char *);
int ftpd_pclose(FILE *);
FILE *ftpd_popen(char *[], const char *, int);
char *getline(char *, int, FILE *);
void init_curclass(void);
void logxfer(const char *, off_t, const char *, const char *,
const struct timeval *, const char *);
void logwtmp(const char *, const char *, const char *);
struct tab *lookup(struct tab *, const char *);
void makedir(const char *);
void mlsd(const char *);
void mlst(const char *);
void opts(const char *);
void parse_conf(const char *);
void pass(const char *);
void passive(void);
int lpsvproto2af(int);
int af2lpsvproto(int);
int epsvproto2af(int);
int af2epsvproto(int);
void long_passive(char *, int);
int extended_port(const char *);
void epsv_protounsupp(const char *);
void perror_reply(int, const char *);
void pwd(void);
void removedir(const char *);
void renamecmd(const char *, const char *);
char *renamefrom(const char *);
void reply(int, const char *, ...)
__attribute__((__format__(__printf__, 2, 3)));
void retrieve(char *[], const char *);
void send_file_list(const char *);
void show_chdir_messages(int);
void sizecmd(const char *);
void statcmd(void);
void statfilecmd(const char *);
void store(const char *, const char *, int);
LLT strsuftoll(const char *);
void user(const char *);
char *xstrdup(const char *);
void yyerror(char *);
#include <netinet/in.h>
#ifdef BSD4_4
# define HAVE_SETPROCTITLE 1
# define HAVE_SOCKADDR_SA_LEN 1
#endif
struct sockinet {
union sockunion {
struct sockaddr_in su_sin;
#ifdef INET6
struct sockaddr_in6 su_sin6;
#endif
} si_su;
#if !HAVE_SOCKADDR_SA_LEN
int si_len;
#endif
};
#if !HAVE_SOCKADDR_SA_LEN
# define su_len si_len
#else
# define su_len si_su.su_sin.sin_len
#endif
#define su_addr si_su.su_sin.sin_addr
#define su_family si_su.su_sin.sin_family
#define su_port si_su.su_sin.sin_port
#ifdef INET6
# define su_6addr si_su.su_sin6.sin6_addr
# define su_scope_id si_su.su_sin6.sin6_scope_id
#endif
struct tab {
char *name;
short token;
short state;
short flags; /* 1 if command implemented, 2 if has options */
char *help;
char *options;
};
struct ftpconv {
struct ftpconv *next;
char *suffix; /* Suffix of requested name */
char *types; /* Valid file types */
char *disable; /* File to disable conversions */
char *command; /* Command to do the conversion */
};
typedef enum {
CLASS_GUEST,
CLASS_CHROOT,
CLASS_REAL
} class_ft;
typedef enum {
FLAG_checkportcmd = 1<<0, /* Check port commands */
FLAG_modify = 1<<1, /* Allow CHMOD, DELE, MKD, RMD, RNFR,
UMASK */
FLAG_passive = 1<<2, /* Allow PASV mode */
FLAG_sanenames = 1<<3, /* Restrict names of uploaded files */
FLAG_upload = 1<<4 /* As per modify, but also allow
APPE, STOR, STOU */
} classflag_t;
#define CURCLASS_FLAGS_SET(x) (curclass.flags |= (FLAG_ ## x))
#define CURCLASS_FLAGS_CLR(x) (curclass.flags &= ~(FLAG_ ## x))
#define CURCLASS_FLAGS_ISSET(x) (curclass.flags & (FLAG_ ## x))
struct ftpclass {
struct sockinet advertise; /* PASV address to advertise as */
char *chroot; /* Directory to chroot(2) to at login */
char *classname; /* Current class */
struct ftpconv *conversions; /* List of conversions */
char *display; /* File to display upon chdir */
char *homedir; /* Directory to chdir(2) to at login */
classflag_t flags; /* Flags; see classflag_t above */
int limit; /* Max connections (-1 = unlimited) */
char *limitfile; /* File to display if limit reached */
LLT maxfilesize; /* Maximum file size of uploads */
LLT maxrateget; /* Maximum get transfer rate throttle */
LLT maxrateput; /* Maximum put transfer rate throttle */
unsigned int maxtimeout; /* Maximum permitted timeout */
char *motd; /* MotD file to display after login */
char *notify; /* Files to notify about upon chdir */
int portmin; /* Minumum port for passive mode */
int portmax; /* Maximum port for passive mode */
LLT rateget; /* Get (RETR) transfer rate throttle */
LLT rateput; /* Put (STOR) transfer rate throttle */
unsigned int timeout; /* Default timeout */
class_ft type; /* Class type */
mode_t umask; /* Umask to use */
};
extern int yyparse(void);
#ifndef GLOBAL
#define GLOBAL extern
#endif
GLOBAL struct sockinet ctrl_addr;
GLOBAL struct sockinet data_dest;
GLOBAL struct sockinet data_source;
GLOBAL struct sockinet his_addr;
GLOBAL struct sockinet pasv_addr;
GLOBAL int connections;
GLOBAL struct ftpclass curclass;
GLOBAL int debug;
GLOBAL jmp_buf errcatch;
GLOBAL char *emailaddr;
GLOBAL int form;
GLOBAL int gidcount; /* number of entries in gidlist[] */
GLOBAL gid_t gidlist[NGROUPS_MAX];
GLOBAL int hasyyerrored;
GLOBAL char hostname[MAXHOSTNAMELEN+1];
GLOBAL char homedir[MAXPATHLEN];
#ifdef KERBEROS5
GLOBAL krb5_context kcontext;
#endif
GLOBAL int logged_in;
GLOBAL int logging;
GLOBAL int pdata; /* for passive mode */
#if HAVE_SETPROCTITLE
GLOBAL char proctitle[BUFSIZ]; /* initial part of title */
#endif
GLOBAL struct passwd *pw;
GLOBAL int quietmessages;
GLOBAL char remotehost[MAXHOSTNAMELEN+1];
GLOBAL off_t restart_point;
GLOBAL char tmpline[7];
GLOBAL sig_atomic_t transflag;
GLOBAL int type;
GLOBAL int usedefault; /* for data transfers */
GLOBAL const char *version;
/* total file data bytes */
GLOBAL off_t total_data_in, total_data_out, total_data;
/* total number of data files */
GLOBAL off_t total_files_in, total_files_out, total_files;
/* total bytes */
GLOBAL off_t total_bytes_in, total_bytes_out, total_bytes;
/* total number of xfers */
GLOBAL off_t total_xfers_in, total_xfers_out, total_xfers;
extern struct tab cmdtab[];
#define INTERNAL_LS "/bin/ls"
#define CMD_IMPLEMENTED(x) ((x)->flags != 0)
#define CMD_HAS_OPTIONS(x) ((x)->flags == 2)
#define CPUTC(c, f) do { \
putc(c, f); total_bytes++; total_bytes_out++; \
} while (0);
#define CURCLASSTYPE curclass.type == CLASS_GUEST ? "GUEST" : \
curclass.type == CLASS_CHROOT ? "CHROOT" : \
curclass.type == CLASS_REAL ? "REAL" : \
"<unknown>"
#define ISDOTDIR(x) (x[0] == '.' && x[1] == '\0')
#define ISDOTDOTDIR(x) (x[0] == '.' && x[1] == '.' && x[2] == '\0')
#define EMPTYSTR(p) ((p) == NULL || *(p) == '\0')
#define NEXTWORD(P, W) do { \
(W) = strsep(&(P), " \t"); \
} while ((W) != NULL && *(W) == '\0')
#define PLURAL(s) ((s) == 1 ? "" : "s")
#define REASSIGN(X,Y) do { if (X) free(X); (X)=(Y); } while (/*CONSTCOND*/0)
#ifndef IPPORT_ANONMAX
# define IPPORT_ANONMAX 65535
#endif
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