2348 lines
51 KiB
C
2348 lines
51 KiB
C
/*
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* Copyright (c) 1985, 1988, 1990 Regents of the University of California.
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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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* 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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* 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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* 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 the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1985, 1988, 1990 Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)ftpd.c 5.40 (Berkeley) 7/2/91";
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#endif /* not lint */
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/*
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* FTP server.
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/wait.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#define FTP_NAMES
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#include <arpa/ftp.h>
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#include <arpa/inet.h>
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#include <arpa/telnet.h>
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#include <signal.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <glob.h>
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#include <time.h>
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#include <pwd.h>
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#include <setjmp.h>
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#include <netdb.h>
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#include <errno.h>
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#include <syslog.h>
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#ifndef sgi
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#include <varargs.h>
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#endif
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#include <unistd.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <cap_net.h>
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/* patch 1211 - use ia_* to find out about expired passwords */
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#include <shadow.h>
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#include <ia.h>
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static uinfo_t uinfo;
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long ia_expire, ia_lstchg, now;
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#include "pathnames.h"
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#if defined(_SHAREII) || defined(DCE)
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#include <dlfcn.h>
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#endif /* defined(_SHAREII) || defined(DCE) */
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#ifdef _SHAREII
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#include <shareIIhooks.h>
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SH_DECLARE_HOOK(SETMYNAME);
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SH_DECLARE_HOOK(FTP);
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#endif /* _SHAREII */
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/*
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* File containing login names
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* NOT to be used on this machine.
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* Commonly used to disallow uucp.
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*/
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#ifdef sgi
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/*
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* Global buffers are page aligned using memalign(), which
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* is a Good Thing if you like page flipping.
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*/
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#define NBUFS 3
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#define FTPBUFSIZ (48*1024)
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#define FTPBUFALIGN (16*1024)
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long ibufsize, obufsize;
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char *ftp_inbuf[NBUFS];
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char *ftp_outbuf[NBUFS];
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extern char *crypt();
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#include <strings.h>
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#include <sys/file.h>
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#include <sys/sat.h>
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#endif /* sgi */
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#ifdef sgi
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/*
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* use off64_t, *stat64 and irix (non-bsd) readdir64 for
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* large files and filesystems
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*/
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#define stat stat64
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#define fstat fstat64
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#define off_t off64_t
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#define readdir readdir64
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#endif
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extern char version[];
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extern FILE *ftpd_popen();
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extern int ftpd_pclose();
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extern char *getline();
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extern char *ftpd_tilde(char*, char*);
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extern char cbuf[];
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extern off_t restart_point;
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struct sockaddr_in ctrl_addr;
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struct sockaddr_in data_source;
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struct sockaddr_in data_dest;
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struct sockaddr_in his_addr;
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struct sockaddr_in pasv_addr;
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int data;
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jmp_buf errcatch, urgcatch;
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int logged_in;
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struct passwd *pw;
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int debug;
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int timeout = 900; /* timeout after 15 minutes of inactivity */
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int portcheck = 0; /* check that return address = client address */
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int maxtimeout = 7200;/* don't allow idle time to be set beyond 2 hours */
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int logging;
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int guest;
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int type;
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int form;
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int stru; /* avoid C keyword */
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int mode;
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int usedefault = 1; /* for data transfers */
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int pdata = -1; /* for passive mode */
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int transflag;
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off_t file_size;
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off_t byte_count;
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#if !defined(CMASK) || CMASK == 0
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#undef CMASK
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#ifdef sgi
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#define CMASK 022
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#else
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#define CMASK 027
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#endif
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#endif
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int defumask = CMASK; /* default umask value */
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char tmpline[7];
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char hostname[MAXHOSTNAMELEN];
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char remotehost[MAXHOSTNAMELEN];
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int big_pipe;
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int odirect;
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extern size_t splice(int, int);
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#define ENOUGH (2<<20) /* file transfer size (1M) */
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#ifdef AFS
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int (*afs_verify)();
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#endif
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#ifdef DCE
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int dce_verify(char *user, uid_t uid, gid_t gid, char *passwd, char **msg);
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#endif /* DCE */
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/*
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* Timeout intervals for retrying connections
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* to hosts that don't accept PORT cmds. This
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* is a kludge, but given the problems with TCP...
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*/
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#define SWAITMAX 90 /* wait at most 90 seconds */
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#define SWAITINT 5 /* interval between retries */
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int swaitmax = SWAITMAX;
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int swaitint = SWAITINT;
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void lostconn(), myoob();
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FILE *getdatasock(), *dataconn(char *name, off_t size, char *mode);
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void send_data(FILE *instr, FILE *outstr, off_t blksize);
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void reply(int n, char *fmt, ...);
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#ifdef SETPROCTITLE
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char **Argv = NULL; /* pointer to argument vector */
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char *LastArgv = NULL; /* end of argv */
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char proctitle[BUFSIZ]; /* initial part of title */
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#endif /* SETPROCTITLE */
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#define MAXLINE 256
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/*
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* Restricted accounts require a password but file access is restricted to
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* the account's home directory tree.
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*
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* The account name must be listed in the ftpusers file with the keyword
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* "restrict" after the name. If the name isn't in the file then it has
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* normal access to the full directory structure.
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*/
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int restricted; /* Special login that needs a chroot */
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#define RESTRICT_KEY "restrict"
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int safer_guest; /* hide symbolic links */
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#define LOGCMD(cmd,file) \
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if (logging > 1) \
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syslog(LOG_INFO,"%s %s%s", cmd, \
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*(file) == '/' ? "" : curdir(), file);
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#define LOGCMD2(cmd,file1,file2) \
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if (logging > 1) \
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syslog(LOG_INFO,"%s %s%s %s%s", cmd, \
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*(file1) == '/' ? "" : curdir(), file1, \
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*(file2) == '/' ? "" : curdir(), file2);
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#ifdef sgi
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#define LOGBYTES(cmd, file, cnt) \
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if (logging > 1) { \
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if (logging == 2 || cnt == (off_t)-1) \
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syslog(LOG_INFO,"%s %s%s", cmd, \
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*(file) == '/' ? "" : curdir(), file); \
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else \
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syslog(LOG_INFO, "%s %s%s = %lld bytes", \
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cmd, (*(file) == '/') ? "" : curdir(), file, cnt); \
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}
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#else
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if (logging > 1) { \
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if (logging == 2 || cnt == (off_t)-1) \
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syslog(LOG_INFO,"%s %s%s", cmd, \
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*(file) == '/' ? "" : curdir(), file); \
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else \
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syslog(LOG_INFO, "%s %s%s = %ld bytes", \
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cmd, (*(file) == '/') ? "" : curdir(), file, cnt); \
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}
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#endif
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static int
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cap_seteuid(uid_t uid)
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{
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cap_t ocap;
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const cap_value_t cv = CAP_SETUID;
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int r;
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ocap = cap_acquire(1, &cv);
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r = seteuid(uid);
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cap_surrender(ocap);
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return (r);
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}
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static int
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cap_setegid(gid_t gid)
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{
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cap_t ocap;
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const cap_value_t cv = CAP_SETGID;
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int r;
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ocap = cap_acquire(1, &cv);
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r = setegid(gid);
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cap_surrender(ocap);
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return (r);
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}
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static int
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cap_initgroups(char *name, gid_t gid)
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{
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cap_t ocap;
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const cap_value_t cv = CAP_SETGID;
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int r;
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ocap = cap_acquire(1, &cv);
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r = initgroups(name, gid);
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cap_surrender(ocap);
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return (r);
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}
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static char *
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curdir(void)
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{
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static char path[MAXPATHLEN + 2];
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if (getwd(path) == NULL)
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return("");
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if (path[1] != '\0') /* special case for root dir. */
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strcat(path, "/");
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if (guest || restricted)
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return(path+1); /* skip / since it's chrooted */
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else
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return(path);
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}
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main(argc, argv, envp)
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int argc;
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char *argv[];
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char **envp;
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{
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int addrlen, on = 1, tos;
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char *cp, line[MAXLINE];
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FILE *fd;
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int len;
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int i;
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int s;
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len = sizeof(ibufsize);
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(void)getsockopt(0, SOL_SOCKET, SO_RCVBUF, &ibufsize, &len);
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len = sizeof(obufsize);
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(void)getsockopt(0, SOL_SOCKET, SO_SNDBUF, &obufsize, &len);
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if (ibufsize < FTPBUFSIZ)
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ibufsize = FTPBUFSIZ;
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if (obufsize < FTPBUFSIZ)
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obufsize = FTPBUFSIZ;
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if (ibufsize > 2*1024*1024)
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ibufsize = 2*1024*1024;
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if (obufsize > 2*1024*1024)
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obufsize = 2*1024*1024;
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#ifdef sgi
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/*
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* use memalign to set up page-aligned buffers
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*/
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for (i = 0; i < NBUFS; i++) {
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if ((ftp_inbuf[i] = memalign(FTPBUFALIGN, ibufsize)) == NULL) {
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syslog(LOG_ERR,"ftpd: couldn't allocate I/O buffer\n");
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exit(1);
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}
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if ((ftp_outbuf[i] = memalign(FTPBUFALIGN, obufsize)) == NULL){
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syslog(LOG_ERR,"ftpd: couldn't allocate I/O buffer\n");
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exit(1);
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}
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}
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#endif /* sgi */
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/*
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* LOG_NDELAY sets up the logging connection immediately,
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* necessary for anonymous ftp's that chroot and can't do it later.
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*/
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openlog("ftpd", LOG_PID | LOG_NDELAY, LOG_DAEMON);
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addrlen = sizeof (his_addr);
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if (getpeername(0, (struct sockaddr *)&his_addr, &addrlen) < 0) {
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syslog(LOG_ERR, "getpeername (%s): %m",argv[0]);
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exit(1);
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}
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addrlen = sizeof (ctrl_addr);
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if (getsockname(0, (struct sockaddr *)&ctrl_addr, &addrlen) < 0) {
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syslog(LOG_ERR, "getsockname (%s): %m",argv[0]);
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exit(1);
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}
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#ifdef IP_TOS
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tos = IPTOS_LOWDELAY;
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if (setsockopt(0, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
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syslog(LOG_WARNING, "setsockopt (IP_TOS): %m");
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#endif
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data_source.sin_port = htons(ntohs(ctrl_addr.sin_port) - 1);
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debug = 0;
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#ifdef SETPROCTITLE
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/*
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* Save start and extent of argv for setproctitle.
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*/
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Argv = argv;
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while (*envp)
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envp++;
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LastArgv = envp[-1] + strlen(envp[-1]);
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#endif /* SETPROCTITLE */
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argc--, argv++;
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while (argc > 0 && *argv[0] == '-') {
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for (cp = &argv[0][1]; *cp; cp++) switch (*cp) {
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case 'v':
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debug = 1;
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break;
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case 'd':
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debug = 1;
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break;
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case 'l':
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logging++; /* > 1 == extra logging */
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break;
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case 'p':
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portcheck = 1; /* Prevent PORT command redirection */
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break;
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case 't':
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timeout = atoi(++cp);
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if (maxtimeout < timeout)
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maxtimeout = timeout;
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goto nextopt;
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case 'T':
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maxtimeout = atoi(++cp);
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if (timeout > maxtimeout)
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timeout = maxtimeout;
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goto nextopt;
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case 'u':
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{
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int val = 0;
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while (*++cp && *cp >= '0' && *cp <= '9')
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val = val*8 + *cp - '0';
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if (*cp)
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fprintf(stderr, "ftpd: Bad value for -u\n");
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else
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defumask = val;
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goto nextopt;
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}
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|
|
|
#ifdef sgi
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case 'S':
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safer_guest = 1;
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goto nextopt;
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|
|
|
#endif
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default:
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fprintf(stderr, "ftpd: Unknown flag -%c ignored.\n",
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*cp);
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break;
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}
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nextopt:
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argc--, argv++;
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}
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|
(void) freopen(_PATH_DEVNULL, "w", stderr);
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|
(void) signal(SIGPIPE, (SIG_PF)lostconn);
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(void) signal(SIGCHLD, SIG_IGN);
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if ((int)signal(SIGURG, (SIG_PF)myoob) < 0)
|
|
syslog(LOG_ERR, "signal: %m");
|
|
|
|
/* Try to handle urgent data inline */
|
|
#ifdef SO_OOBINLINE
|
|
if (setsockopt(0, SOL_SOCKET, SO_OOBINLINE, (char *)&on, sizeof(on)) < 0)
|
|
syslog(LOG_ERR, "setsockopt: %m");
|
|
#endif
|
|
|
|
#ifdef F_SETOWN
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|
if (fcntl(fileno(stdin), F_SETOWN, getpid()) == -1)
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|
syslog(LOG_ERR, "fcntl F_SETOWN: %m");
|
|
#endif
|
|
dolog(&his_addr);
|
|
/*
|
|
* Set up default state
|
|
*/
|
|
data = -1;
|
|
type = TYPE_A;
|
|
form = FORM_N;
|
|
stru = STRU_F;
|
|
mode = MODE_S;
|
|
tmpline[0] = '\0';
|
|
|
|
/* If logins are disabled, print out the message. */
|
|
if ((fd = fopen(_PATH_NOLOGIN,"r")) != NULL) {
|
|
while (fgets(line, sizeof (line), fd) != NULL) {
|
|
if ((cp = index(line, '\n')) != NULL)
|
|
*cp = '\0';
|
|
lreply(530, "%s", line);
|
|
}
|
|
(void) fflush(stdout);
|
|
(void) fclose(fd);
|
|
reply(530, "System not available.");
|
|
exit(0);
|
|
}
|
|
#ifdef AFS
|
|
afs_verify = (int (*)())__afs_getsym("afs_verify");
|
|
#endif
|
|
if ((fd = fopen(_PATH_WELCOME, "r")) != NULL) {
|
|
while (fgets(line, sizeof (line), fd) != NULL) {
|
|
if ((cp = index(line, '\n')) != NULL)
|
|
*cp = '\0';
|
|
lreply(220, "%s", line);
|
|
}
|
|
(void) fflush(stdout);
|
|
(void) fclose(fd);
|
|
/* reply(220,) must follow */
|
|
}
|
|
(void) gethostname(hostname, sizeof (hostname));
|
|
#ifdef sgi
|
|
{ /* Canonicalize hostname. */
|
|
struct hostent *hp;
|
|
if ((hp = gethostbyname(hostname)) != NULL) {
|
|
strncpy(hostname, hp->h_name, sizeof(hostname)-1);
|
|
hostname[sizeof(hostname)-1] = '\0';
|
|
}
|
|
}
|
|
reply(220, "%s FTP server ready.", hostname);
|
|
#else
|
|
reply(220, "%s FTP server (%s) ready.", hostname, version);
|
|
#endif
|
|
(void) setjmp(errcatch);
|
|
for (;;)
|
|
(void) yyparse();
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
void
|
|
lostconn()
|
|
{
|
|
if (debug)
|
|
syslog(LOG_DEBUG, "lost connection");
|
|
dologout(-1);
|
|
}
|
|
|
|
#ifdef sgi
|
|
#define ttyline ""
|
|
#else
|
|
static char ttyline[20];
|
|
#endif
|
|
|
|
/*
|
|
* Helper function for sgetpwnam().
|
|
*/
|
|
char *
|
|
sgetsave(s)
|
|
char *s;
|
|
{
|
|
char *new = malloc((unsigned) strlen(s) + 1);
|
|
|
|
if (new == NULL) {
|
|
perror_reply(421, "Local resource failure: malloc");
|
|
dologout(1);
|
|
/* NOTREACHED */
|
|
}
|
|
(void) strcpy(new, s);
|
|
return (new);
|
|
}
|
|
|
|
/*
|
|
* Save the result of a getpwnam. Used for USER command, since
|
|
* the data returned must not be clobbered by any other command
|
|
* (e.g., globbing).
|
|
*/
|
|
struct passwd *
|
|
sgetpwnam(name)
|
|
char *name;
|
|
{
|
|
static struct passwd save;
|
|
register struct passwd *p;
|
|
char *sgetsave();
|
|
|
|
if ((p = getpwnam(name)) == NULL)
|
|
return (p);
|
|
if (save.pw_name) {
|
|
free(save.pw_name);
|
|
free(save.pw_passwd);
|
|
free(save.pw_gecos);
|
|
free(save.pw_dir);
|
|
free(save.pw_shell);
|
|
}
|
|
save = *p;
|
|
save.pw_name = sgetsave(p->pw_name);
|
|
save.pw_passwd = sgetsave(p->pw_passwd);
|
|
save.pw_gecos = sgetsave(p->pw_gecos);
|
|
save.pw_dir = sgetsave(p->pw_dir);
|
|
save.pw_shell = sgetsave(p->pw_shell);
|
|
return (&save);
|
|
}
|
|
|
|
int login_attempts; /* number of failed login attempts */
|
|
int askpasswd; /* had user command, ask for passwd */
|
|
char curname[10]; /* current USER name */
|
|
|
|
/*
|
|
* USER command.
|
|
* Sets global passwd pointer pw if named account exists and is acceptable;
|
|
* sets askpasswd if a PASS command is expected. If logged in previously,
|
|
* need to reset state. If name is "ftp" or "anonymous", the name is not in
|
|
* _PATH_FTPUSERS, and ftp account exists, set guest and pw, then just return.
|
|
* If account doesn't exist, ask for passwd anyway. Otherwise, check user
|
|
* requesting login privileges. Disallow anyone who does not have a standard
|
|
* shell as returned by getusershell(). Disallow anyone mentioned in the file
|
|
* _PATH_FTPUSERS to allow people such as root and uucp to be avoided.
|
|
*/
|
|
user(name)
|
|
char *name;
|
|
{
|
|
register char *cp;
|
|
#ifndef sgi
|
|
char *shell;
|
|
char *getusershell();
|
|
#endif
|
|
|
|
if (logged_in) {
|
|
if (guest || restricted) {
|
|
reply(530, "Can't change user from guest login.");
|
|
return;
|
|
}
|
|
end_login();
|
|
}
|
|
|
|
guest = restricted = 0;
|
|
if (strcmp(name, "ftp") == 0 || strcmp(name, "anonymous") == 0) {
|
|
if (checkuser("ftp", NULL) || checkuser("anonymous", NULL))
|
|
reply(530, "User %s access denied.", name);
|
|
else if ((pw = sgetpwnam("ftp")) != NULL) {
|
|
guest = 1;
|
|
askpasswd = 1;
|
|
reply(331,
|
|
"Guest login ok, type your name as password.");
|
|
} else
|
|
reply(530, "User %s unknown.", name);
|
|
if (!askpasswd && logging)
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"ANONYMOUS FTP LOGIN REFUSED FROM %s", remotehost);
|
|
return;
|
|
}
|
|
if (pw = sgetpwnam(name)) {
|
|
#ifdef sgi
|
|
cp = "";
|
|
#else
|
|
if ((shell = pw->pw_shell) == NULL || *shell == 0)
|
|
shell = _PATH_BSHELL;
|
|
while ((cp = getusershell()) != NULL)
|
|
if (strcmp(cp, shell) == 0)
|
|
break;
|
|
endusershell();
|
|
#endif
|
|
|
|
if (cp == NULL || checkuser(name, &restricted)) {
|
|
reply(530, "User %s access denied.", name);
|
|
if (logging)
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"FTP LOGIN REFUSED FROM %s, %s",
|
|
remotehost, name);
|
|
pw = (struct passwd *) NULL;
|
|
return;
|
|
}
|
|
}
|
|
if (logging)
|
|
strncpy(curname, name, sizeof(curname)-1);
|
|
reply(331, "Password required for %s.", name);
|
|
askpasswd = 1;
|
|
/*
|
|
* Delay before reading passwd after first failed
|
|
* attempt to slow down passwd-guessing programs.
|
|
*/
|
|
if (login_attempts)
|
|
sleep((unsigned) login_attempts);
|
|
}
|
|
|
|
/*
|
|
* Check if a user is in the file _PATH_FTPUSERS
|
|
*/
|
|
checkuser(name, restrict)
|
|
char *name;
|
|
int *restrict;
|
|
{
|
|
register FILE *fd;
|
|
register char *p;
|
|
char line[BUFSIZ];
|
|
int access = 0;
|
|
|
|
if ((fd = fopen(_PATH_FTPUSERS, "r")) != NULL) {
|
|
while (fgets(line, sizeof(line), fd) != NULL) {
|
|
if ((p = index(line, '\n')) != NULL) {
|
|
*p = '\0';
|
|
if (line[0] == '#')
|
|
continue;
|
|
/* Strip trailing white space */
|
|
if ((p = strtok(line, " \t")) &&
|
|
strcmp(p, name) == 0) {
|
|
/*
|
|
* If the line contains an account name
|
|
* followed by "restrict", then allow
|
|
* restricted access to the account.
|
|
*/
|
|
if ((p = strtok(NULL, " \t")) &&
|
|
strcasecmp(p, RESTRICT_KEY) == 0) {
|
|
if (restrict)
|
|
*restrict = 1;
|
|
} else
|
|
access = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
(void) fclose(fd);
|
|
}
|
|
return (access);
|
|
}
|
|
|
|
/*
|
|
* Terminate login as previous user, if any, resetting state;
|
|
* used when USER command is given or login fails.
|
|
*/
|
|
end_login()
|
|
{
|
|
(void) cap_seteuid((uid_t)0);
|
|
if (logged_in)
|
|
logwtmp(ttyline, "", "");
|
|
pw = NULL;
|
|
logged_in = 0;
|
|
guest = 0;
|
|
restricted = 0;
|
|
}
|
|
|
|
pass(passwd)
|
|
char *passwd;
|
|
{
|
|
char *xpasswd, *salt;
|
|
FILE *fd;
|
|
|
|
if (logged_in || askpasswd == 0) {
|
|
reply(503, "Login with USER first.");
|
|
return;
|
|
}
|
|
|
|
askpasswd = 0;
|
|
if (!guest) { /* "ftp" is only account allowed no password */
|
|
if (pw == NULL)
|
|
salt = "xx";
|
|
else
|
|
salt = pw->pw_passwd;
|
|
#ifdef AFS
|
|
if (pw != NULL && afs_verify)
|
|
if ((*afs_verify)(pw->pw_name, passwd, NULL, 1) == 0)
|
|
goto good;
|
|
#endif
|
|
#ifdef DCE
|
|
if (pw != NULL && strcmp(pw->pw_passwd,"-DCE-") == 0) {
|
|
void *handle=NULL;
|
|
char *dce_err;
|
|
if (!(handle=sgidladd("libdce.so",RTLD_LAZY))) {
|
|
if (logging) {
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"FTP DCE LOGIN FAILED, NO DCE LIBRARY");
|
|
}
|
|
goto login_failed;
|
|
}
|
|
if (!dlsym(handle,"dce_verify")) {
|
|
if (logging) {
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"FTP DCE LOGIN FAILED, WRONG DCE LIBRARY");
|
|
}
|
|
goto login_failed;
|
|
}
|
|
if (dce_verify(pw->pw_name, pw->pw_uid, pw->pw_gid,
|
|
passwd, &dce_err)) {
|
|
memset(passwd, 'x', strlen(passwd));
|
|
if (dce_err) {
|
|
if (logging) {
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"FTP DCE LOGIN FAILED, %s",
|
|
dce_err);
|
|
}
|
|
free(dce_err);
|
|
} else {
|
|
if (logging) {
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"FTP DCE LOGIN FAILED");
|
|
}
|
|
}
|
|
goto login_failed;
|
|
}
|
|
memset(passwd, 'x', strlen(passwd));
|
|
goto password_verified;
|
|
}
|
|
#endif /* DCE */
|
|
xpasswd = crypt(passwd, salt);
|
|
memset(passwd, 'x', strlen(passwd));
|
|
/* The strcmp does not catch null passwords! */
|
|
if (pw == NULL || *pw->pw_passwd == '\0' ||
|
|
strcmp(xpasswd, pw->pw_passwd)) {
|
|
login_failed:
|
|
reply(530, "Login incorrect.");
|
|
if (logging)
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"FTP LOGIN FAILED FROM %s, %s",
|
|
remotehost, curname);
|
|
pw = NULL;
|
|
if (login_attempts++ >= 5) {
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"repeated login failures from %s",
|
|
remotehost);
|
|
exit(0);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
password_verified:
|
|
#ifdef _SHAREII
|
|
/*
|
|
* Perform Share II resource limit checks.
|
|
*/
|
|
if (sgidladd(SH_LIMITS_LIB, RTLD_LAZY))
|
|
{
|
|
static const char *Myname = "ftpd";
|
|
|
|
SH_HOOK_SETMYNAME(Myname);
|
|
|
|
if (SH_HOOK_FTP(pw->pw_uid))
|
|
{
|
|
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"Share II resource limit checks for user '%s' failed",
|
|
pw->pw_name);
|
|
return;
|
|
}
|
|
}
|
|
#endif /* _SHAREII */
|
|
|
|
good:
|
|
/* patch 1211 - add in ia_userinfo use to check for expired
|
|
* passwords. This should be better integrated.
|
|
*/
|
|
if ( ia_openinfo(pw->pw_name, &uinfo) || (uinfo == NULL) ) {
|
|
reply(530, "Unexpected login failure - contact system administrator");
|
|
syslog(LOG_ALERT|LOG_AUTH, "ia_openinfo failed for valid user!");
|
|
exit(1);
|
|
}
|
|
/* check for passwd expiration */
|
|
ia_get_logexpire(uinfo, &ia_expire);
|
|
ia_get_logchg(uinfo, &ia_lstchg);
|
|
now = DAY_NOW;
|
|
if ( ((ia_expire > 0) && (ia_expire < now))
|
|
||((ia_lstchg == 0) || (ia_lstchg > now)) ){
|
|
reply(530,
|
|
"Your password has expired, please login to change it.");
|
|
syslog(LOG_NOTICE|LOG_AUTH,
|
|
"%s tried to login with an expired password", pw->pw_name);
|
|
exit(0);
|
|
}
|
|
/* end of 1211 changes */
|
|
|
|
login_attempts = 0; /* this time successful */
|
|
if (cap_setegid((gid_t)pw->pw_gid) < 0) {
|
|
reply(550, "Can't set gid.");
|
|
return;
|
|
}
|
|
(void) cap_initgroups(pw->pw_name, pw->pw_gid);
|
|
|
|
#ifdef sgi
|
|
/* update utmp,wtmp before chroot */
|
|
dologin(pw, remotehost, guest || restricted);
|
|
#else
|
|
/* open wtmp before chroot */
|
|
(void)sprintf(ttyline, "ftp%d", getpid());
|
|
logwtmp(ttyline, pw->pw_name, remotehost);
|
|
#endif
|
|
logged_in = 1;
|
|
|
|
if (guest || restricted) {
|
|
const cap_value_t cap_chroot = CAP_CHROOT;
|
|
cap_t ocap = cap_acquire(1, &cap_chroot);
|
|
if (chroot(pw->pw_dir) < 0) {
|
|
cap_surrender(ocap);
|
|
reply(550, "Can't set guest privileges.");
|
|
goto bad;
|
|
}
|
|
cap_surrender(ocap);
|
|
}
|
|
|
|
if (cap_seteuid((uid_t)pw->pw_uid) < 0) {
|
|
reply(550, "Can't set uid.");
|
|
goto bad;
|
|
}
|
|
|
|
if (guest || restricted) {
|
|
/*
|
|
* We MUST do a chdir() after the chroot. Otherwise
|
|
* the old current directory will be accessible as "."
|
|
* outside the new root!
|
|
*/
|
|
if (chdir("/") < 0) {
|
|
reply(550, "Can't set guest privileges.");
|
|
goto bad;
|
|
}
|
|
|
|
/*
|
|
* Display a login message, if it exists.
|
|
* N.B. reply(230,) must follow the message.
|
|
*/
|
|
if ((fd = fopen(_PATH_FTPLOGINMESG, "r")) != NULL) {
|
|
char *cp, line[MAXLINE];
|
|
|
|
while (fgets(line, sizeof (line), fd) != NULL) {
|
|
if ((cp = index(line, '\n')) != NULL)
|
|
*cp = '\0';
|
|
lreply(230, "%s", line);
|
|
}
|
|
(void) fflush(stdout);
|
|
(void) fclose(fd);
|
|
}
|
|
} else {
|
|
if (chdir(pw->pw_dir) < 0) {
|
|
if (chdir("/") < 0) {
|
|
reply(530, "User %s: can't change directory to %s.", pw->pw_name, pw->pw_dir);
|
|
goto bad;
|
|
} else {
|
|
lreply(230, "No directory! Logging in with home=/");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (guest) {
|
|
reply(230, "Guest login ok, access restrictions apply.");
|
|
#ifdef SETPROCTITLE
|
|
sprintf(proctitle, "%s: anonymous/%.*s", remotehost,
|
|
sizeof(proctitle) - sizeof(remotehost) -
|
|
sizeof(": anonymous/"), passwd);
|
|
setproctitle(proctitle);
|
|
#endif /* SETPROCTITLE */
|
|
if (logging)
|
|
syslog(LOG_INFO|LOG_AUTH, "ANONYMOUS FTP LOGIN FROM %s, %s",
|
|
remotehost, passwd);
|
|
} else if (restricted) {
|
|
reply(230, "User %s logged in, access restrictions apply.",
|
|
pw->pw_name);
|
|
if (logging)
|
|
syslog(LOG_INFO|LOG_AUTH,
|
|
"RESTRICTED FTP LOGIN FROM %s as %s",
|
|
remotehost, pw->pw_name);
|
|
#ifdef SETPROCTITLE
|
|
sprintf(proctitle, "%s: restricted/%s", remotehost,pw->pw_name);
|
|
setproctitle(proctitle);
|
|
#endif /* SETPROCTITLE */
|
|
} else {
|
|
reply(230, "User %s logged in.", pw->pw_name);
|
|
#ifdef SETPROCTITLE
|
|
sprintf(proctitle, "%s: %s", remotehost, pw->pw_name);
|
|
setproctitle(proctitle);
|
|
#endif /* SETPROCTITLE */
|
|
if (logging)
|
|
syslog(LOG_INFO|LOG_AUTH, "FTP LOGIN FROM %s as %s",
|
|
remotehost, pw->pw_name);
|
|
}
|
|
|
|
(void) umask(defumask);
|
|
return;
|
|
bad:
|
|
/* Forget all about it... */
|
|
end_login();
|
|
}
|
|
|
|
retrieve(cmd, name)
|
|
char *cmd, *name;
|
|
{
|
|
FILE *fin, *dout;
|
|
struct stat st;
|
|
int (*closefunc)();
|
|
|
|
if (cmd == 0) {
|
|
fin = fopen(name, "r"), closefunc = fclose;
|
|
st.st_size = 0;
|
|
} else {
|
|
char line[BUFSIZ];
|
|
|
|
(void) sprintf(line, cmd, name), name = line;
|
|
fin = ftpd_popen(line, "r"), closefunc = ftpd_pclose;
|
|
st.st_size = -1;
|
|
#ifndef sgi /* Not defined in SYSV. */
|
|
st.st_blksize = BUFSIZ;
|
|
#endif
|
|
}
|
|
if (fin == NULL) {
|
|
if (errno != 0) {
|
|
perror_reply(550, name);
|
|
if (cmd == 0) {
|
|
LOGCMD("get", name);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
byte_count = -1;
|
|
if (cmd == 0 &&
|
|
(fstat(fileno(fin), &st) < 0 || (st.st_mode&S_IFMT) != S_IFREG)) {
|
|
reply(550, "%s: not a plain file.", name);
|
|
goto done;
|
|
}
|
|
if (restart_point) {
|
|
if (type == TYPE_A) {
|
|
register int i, n, c;
|
|
|
|
n = restart_point;
|
|
i = 0;
|
|
while (i++ < n) {
|
|
if ((c=getc(fin)) == EOF) {
|
|
perror_reply(550, name);
|
|
goto done;
|
|
}
|
|
if (c == '\n')
|
|
i++;
|
|
}
|
|
} else if (lseek(fileno(fin), restart_point, L_SET) < 0) {
|
|
perror_reply(550, name);
|
|
goto done;
|
|
}
|
|
}
|
|
dout = dataconn(name, st.st_size, "w");
|
|
if (dout == NULL)
|
|
goto done;
|
|
#ifdef sgi
|
|
send_data(fin, dout, (off_t) obufsize);
|
|
#else
|
|
send_data(fin, dout, st.st_blksize);
|
|
#endif
|
|
(void) fclose(dout);
|
|
data = -1;
|
|
pdata = -1;
|
|
done:
|
|
if (cmd == 0)
|
|
LOGBYTES("get", name, byte_count);
|
|
(*closefunc)(fin);
|
|
}
|
|
|
|
store(name, mode, unique)
|
|
char *name, *mode;
|
|
int unique;
|
|
{
|
|
FILE *fout, *din;
|
|
struct stat st;
|
|
int (*closefunc)();
|
|
char *gunique();
|
|
|
|
if (unique && stat(name, &st) == 0 &&
|
|
(name = gunique(name)) == NULL) {
|
|
LOGCMD(*mode == 'w' ? "put" : "append", name);
|
|
return;
|
|
}
|
|
|
|
if (restart_point)
|
|
mode = "r+w";
|
|
fout = fopen(name, mode);
|
|
closefunc = fclose;
|
|
if (fout == NULL) {
|
|
perror_reply(553, name);
|
|
LOGCMD(*mode == 'w' ? "put" : "append", name);
|
|
return;
|
|
}
|
|
byte_count = -1;
|
|
if (restart_point) {
|
|
if (type == TYPE_A) {
|
|
register int i, n, c;
|
|
|
|
n = restart_point;
|
|
i = 0;
|
|
while (i++ < n) {
|
|
if ((c=getc(fout)) == EOF) {
|
|
perror_reply(550, name);
|
|
goto done;
|
|
}
|
|
if (c == '\n')
|
|
i++;
|
|
}
|
|
/*
|
|
* We must do this seek to "current" position
|
|
* because we are changing from reading to
|
|
* writing.
|
|
*/
|
|
if (fseek(fout, 0L, L_INCR) < 0) {
|
|
perror_reply(550, name);
|
|
goto done;
|
|
}
|
|
} else if (lseek(fileno(fout), restart_point, L_SET) < 0) {
|
|
perror_reply(550, name);
|
|
goto done;
|
|
}
|
|
}
|
|
din = dataconn(name, (off_t)-1, "r");
|
|
if (din == NULL)
|
|
goto done;
|
|
if (receive_data(din, fout) == 0) {
|
|
if (unique)
|
|
reply(226, "Transfer complete (unique file name:%s).",
|
|
name);
|
|
else
|
|
reply(226, "Transfer complete.");
|
|
}
|
|
(void) fclose(din);
|
|
data = -1;
|
|
pdata = -1;
|
|
done:
|
|
LOGBYTES(*mode == 'w' ? "put" : "append", name, byte_count);
|
|
(*closefunc)(fout);
|
|
}
|
|
|
|
FILE *
|
|
getdatasock(mode)
|
|
char *mode;
|
|
{
|
|
int s, on = 1, tries;
|
|
int t;
|
|
|
|
if (data >= 0)
|
|
return (fdopen(data, mode));
|
|
s = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (s < 0)
|
|
return (NULL);
|
|
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
|
|
(char *) &on, sizeof (on)) < 0)
|
|
goto bad;
|
|
/* anchor socket to avoid multi-homing problems */
|
|
data_source.sin_family = AF_INET;
|
|
data_source.sin_addr = ctrl_addr.sin_addr;
|
|
for (tries = 1; ; tries++) {
|
|
if (cap_bind(s, (struct sockaddr *)&data_source,
|
|
sizeof (data_source)) >= 0)
|
|
break;
|
|
if (errno != EADDRINUSE || tries > 10)
|
|
goto bad;
|
|
sleep(tries);
|
|
}
|
|
#ifdef IP_TOS
|
|
on = IPTOS_THROUGHPUT;
|
|
if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)) < 0)
|
|
syslog(LOG_WARNING, "setsockopt (IP_TOS): %m");
|
|
#endif
|
|
if (big_pipe) {
|
|
int sz = big_pipe;
|
|
|
|
(void)setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sz, sizeof(sz));
|
|
(void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sz, sizeof(sz));
|
|
}
|
|
|
|
return (fdopen(s, mode));
|
|
bad:
|
|
/* Return the real value of errno (close may change it) */
|
|
t = errno;
|
|
(void) close(s);
|
|
errno = t;
|
|
return (NULL);
|
|
}
|
|
|
|
FILE *
|
|
dataconn(char *name, off_t size, char *mode)
|
|
{
|
|
char sizebuf[32];
|
|
FILE *file;
|
|
int retry = 0, tos;
|
|
extern void toolong(int);
|
|
|
|
file_size = size;
|
|
byte_count = 0;
|
|
if (size != (off_t) -1)
|
|
#ifdef sgi
|
|
(void) sprintf (sizebuf, " (%lld bytes)", size);
|
|
#else
|
|
(void) sprintf (sizebuf, " (%ld bytes)", size);
|
|
#endif
|
|
else
|
|
(void) strcpy(sizebuf, "");
|
|
if (pdata >= 0) {
|
|
struct sockaddr_in from;
|
|
int s, fromlen = sizeof(from);
|
|
|
|
signal(SIGALRM, toolong);
|
|
(void) alarm((unsigned)timeout);
|
|
s = accept(pdata, (struct sockaddr *)&from, &fromlen);
|
|
if (s < 0) {
|
|
(void) alarm(0);
|
|
reply(425, "Can't open data connection.");
|
|
(void) close(pdata);
|
|
pdata = -1;
|
|
return(NULL);
|
|
}
|
|
(void) alarm(0);
|
|
(void) close(pdata);
|
|
pdata = s;
|
|
#ifdef IP_TOS
|
|
tos = IPTOS_LOWDELAY;
|
|
(void) setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos,
|
|
sizeof(int));
|
|
#endif
|
|
|
|
if (big_pipe) {
|
|
int sz = big_pipe;
|
|
|
|
(void)setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sz,
|
|
sizeof(sz));
|
|
(void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sz,
|
|
sizeof(sz));
|
|
}
|
|
reply(150, "Opening %s mode data connection for '%s'%s.",
|
|
type == TYPE_A ? "ASCII" : "BINARY", name, sizebuf);
|
|
return(fdopen(pdata, mode));
|
|
}
|
|
if (data >= 0) {
|
|
reply(125, "Using existing data connection for '%s'%s.",
|
|
name, sizebuf);
|
|
usedefault = 1;
|
|
return (fdopen(data, mode));
|
|
}
|
|
if (usedefault)
|
|
data_dest = his_addr;
|
|
if (portcheck && data_dest.sin_addr.s_addr != his_addr.sin_addr.s_addr) {
|
|
reply(425, "Can't redirect to third party");
|
|
return (NULL);
|
|
}
|
|
usedefault = 1;
|
|
file = getdatasock(mode);
|
|
if (file == NULL) {
|
|
reply(425, "Can't create data socket (%s,%d): %s.",
|
|
inet_ntoa(data_source.sin_addr),
|
|
ntohs(data_source.sin_port), strerror(errno));
|
|
return (NULL);
|
|
}
|
|
data = fileno(file);
|
|
while (connect(data, (struct sockaddr *)&data_dest,
|
|
sizeof (data_dest)) < 0) {
|
|
if (errno == EADDRINUSE && retry < swaitmax) {
|
|
sleep((unsigned) swaitint);
|
|
retry += swaitint;
|
|
continue;
|
|
}
|
|
perror_reply(425, "Can't build data connection");
|
|
(void) fclose(file);
|
|
data = -1;
|
|
return (NULL);
|
|
}
|
|
if (big_pipe) {
|
|
int sz = big_pipe;
|
|
|
|
(void)setsockopt(data, SOL_SOCKET, SO_SNDBUF, &sz, sizeof(sz));
|
|
(void)setsockopt(data, SOL_SOCKET, SO_RCVBUF, &sz, sizeof(sz));
|
|
}
|
|
reply(150, "Opening %s mode data connection for '%s'%s.",
|
|
type == TYPE_A ? "ASCII" : "BINARY", name, sizebuf);
|
|
return (file);
|
|
}
|
|
|
|
/*
|
|
* Tranfer the contents of "instr" to
|
|
* "outstr" peer using the appropriate
|
|
* encapsulation of the data subject
|
|
* to Mode, Structure, and Type.
|
|
*
|
|
* NB: Form isn't handled.
|
|
*/
|
|
void
|
|
send_data(FILE *instr, FILE *outstr, off_t blksize)
|
|
{
|
|
register int c, cnt;
|
|
int b = 0;
|
|
#ifndef sgi
|
|
register char *buf;
|
|
#endif
|
|
int netfd, filefd;
|
|
|
|
transflag++;
|
|
if (setjmp(urgcatch)) {
|
|
transflag = 0;
|
|
return;
|
|
}
|
|
switch (type) {
|
|
|
|
case TYPE_A:
|
|
while ((c = getc(instr)) != EOF) {
|
|
byte_count++;
|
|
if (c == '\n') {
|
|
if (ferror(outstr))
|
|
goto data_err;
|
|
(void) putc('\r', outstr);
|
|
}
|
|
(void) putc(c, outstr);
|
|
}
|
|
fflush(outstr);
|
|
transflag = 0;
|
|
if (ferror(instr))
|
|
goto file_err;
|
|
if (ferror(outstr))
|
|
goto data_err;
|
|
reply(226, "Transfer complete.");
|
|
return;
|
|
|
|
case TYPE_I:
|
|
case TYPE_L:
|
|
#ifdef sgi
|
|
netfd = fileno(outstr);
|
|
filefd = fileno(instr);
|
|
|
|
if (odirect || big_pipe) {
|
|
cnt = splice(filefd, netfd);
|
|
transflag = 0;
|
|
if (cnt == -2) {
|
|
goto data_err;
|
|
} else if (cnt == -1) {
|
|
goto file_err;
|
|
}
|
|
byte_count += cnt;
|
|
goto out;
|
|
}
|
|
while ((cnt = read(filefd, ftp_outbuf[b], obufsize)) > 0 &&
|
|
write(netfd, ftp_outbuf[b], cnt) == cnt) {
|
|
byte_count += cnt;
|
|
b++;
|
|
if (b == NBUFS) {
|
|
b = 0;
|
|
}
|
|
}
|
|
transflag = 0;
|
|
#else
|
|
if ((buf = malloc((u_int)blksize)) == NULL) {
|
|
transflag = 0;
|
|
perror_reply(451, "Local resource failure: malloc");
|
|
return;
|
|
}
|
|
netfd = fileno(outstr);
|
|
filefd = fileno(instr);
|
|
while ((cnt = read(filefd, buf, (u_int)blksize)) > 0 &&
|
|
write(netfd, buf, cnt) == cnt)
|
|
byte_count += cnt;
|
|
transflag = 0;
|
|
(void)free(buf);
|
|
#endif
|
|
if (cnt != 0) {
|
|
if (cnt < 0)
|
|
goto file_err;
|
|
goto data_err;
|
|
}
|
|
out:
|
|
reply(226, "Transfer complete.");
|
|
return;
|
|
default:
|
|
transflag = 0;
|
|
reply(550, "Unimplemented TYPE %d in send_data", type);
|
|
return;
|
|
}
|
|
|
|
data_err:
|
|
transflag = 0;
|
|
perror_reply(426, "Data connection");
|
|
return;
|
|
|
|
file_err:
|
|
transflag = 0;
|
|
perror_reply(551, "Error on input file");
|
|
}
|
|
|
|
/*
|
|
* Transfer data from peer to
|
|
* "outstr" using the appropriate
|
|
* encapulation of the data subject
|
|
* to Mode, Structure, and Type.
|
|
*
|
|
* N.B.: Form isn't handled.
|
|
*/
|
|
receive_data(instr, outstr)
|
|
FILE *instr, *outstr;
|
|
{
|
|
register int c;
|
|
int cnt, bare_lfs = 0;
|
|
#ifndef sgi
|
|
char buf[BUFSIZ];
|
|
#endif
|
|
int b = 0;
|
|
|
|
transflag++;
|
|
if (setjmp(urgcatch)) {
|
|
transflag = 0;
|
|
return (-1);
|
|
}
|
|
switch (type) {
|
|
|
|
case TYPE_I:
|
|
case TYPE_L:
|
|
#ifdef sgi
|
|
if (odirect || big_pipe) {
|
|
cnt = splice(fileno(instr), fileno(outstr));
|
|
if (cnt == -1) {
|
|
goto data_err;
|
|
} else if (cnt == -2) {
|
|
goto file_err;
|
|
}
|
|
byte_count += cnt;
|
|
return 0;
|
|
}
|
|
while ((cnt = read(fileno(instr), ftp_inbuf[b], ibufsize))
|
|
> 0) {
|
|
if (write(fileno(outstr), ftp_inbuf[b], cnt) != cnt)
|
|
goto file_err;
|
|
byte_count += cnt;
|
|
b++;
|
|
if (b == NBUFS) {
|
|
b = 0;
|
|
}
|
|
}
|
|
#else
|
|
while ((cnt = read(fileno(instr), buf, sizeof buf)) > 0) {
|
|
if (write(fileno(outstr), buf, cnt) != cnt)
|
|
goto file_err;
|
|
byte_count += cnt;
|
|
}
|
|
#endif
|
|
if (cnt < 0)
|
|
goto data_err;
|
|
transflag = 0;
|
|
return (0);
|
|
|
|
case TYPE_E:
|
|
reply(553, "TYPE E not implemented.");
|
|
transflag = 0;
|
|
return (-1);
|
|
|
|
case TYPE_A:
|
|
while ((c = getc(instr)) != EOF) {
|
|
byte_count++;
|
|
if (c == '\n')
|
|
bare_lfs++;
|
|
while (c == '\r') {
|
|
if (ferror(outstr))
|
|
goto data_err;
|
|
if ((c = getc(instr)) != '\n') {
|
|
(void) putc ('\r', outstr);
|
|
if (c == '\0' || c == EOF)
|
|
goto contin2;
|
|
}
|
|
}
|
|
(void) putc(c, outstr);
|
|
contin2: ;
|
|
}
|
|
fflush(outstr);
|
|
if (ferror(instr))
|
|
goto data_err;
|
|
if (ferror(outstr))
|
|
goto file_err;
|
|
transflag = 0;
|
|
if (bare_lfs) {
|
|
lreply(230, "WARNING! %d bare linefeeds received in ASCII mode", bare_lfs);
|
|
printf(" File may not have transferred correctly.\r\n");
|
|
}
|
|
return (0);
|
|
default:
|
|
reply(550, "Unimplemented TYPE %d in receive_data", type);
|
|
transflag = 0;
|
|
return (-1);
|
|
}
|
|
|
|
data_err:
|
|
transflag = 0;
|
|
perror_reply(426, "Data Connection");
|
|
return (-1);
|
|
|
|
file_err:
|
|
transflag = 0;
|
|
perror_reply(452, "Error writing file");
|
|
return (-1);
|
|
}
|
|
|
|
statfilecmd(filename)
|
|
char *filename;
|
|
{
|
|
char line[BUFSIZ];
|
|
FILE *fin;
|
|
int c;
|
|
|
|
#ifdef sgi
|
|
(void) sprintf(line, "/bin/ls -lA %s", filename);
|
|
#else
|
|
(void) sprintf(line, "/bin/ls -lgA %s", filename);
|
|
#endif
|
|
fin = ftpd_popen(line, "r");
|
|
lreply(211, "status of %s:", filename);
|
|
while ((c = getc(fin)) != EOF) {
|
|
if (c == '\n') {
|
|
if (ferror(stdout)){
|
|
perror_reply(421, "control connection");
|
|
(void) ftpd_pclose(fin);
|
|
dologout(1);
|
|
/* NOTREACHED */
|
|
}
|
|
if (ferror(fin)) {
|
|
perror_reply(551, filename);
|
|
(void) ftpd_pclose(fin);
|
|
return;
|
|
}
|
|
(void) putc('\r', stdout);
|
|
}
|
|
(void) putc(c, stdout);
|
|
}
|
|
(void) ftpd_pclose(fin);
|
|
reply(211, "End of Status");
|
|
}
|
|
|
|
statcmd()
|
|
{
|
|
struct sockaddr_in *sin;
|
|
u_char *a, *p;
|
|
|
|
lreply(211, "%s FTP server status:", hostname, version);
|
|
printf(" %s\r\n", version);
|
|
printf(" Connected to %s", remotehost);
|
|
if (!isdigit(remotehost[0]))
|
|
printf(" (%s)", inet_ntoa(his_addr.sin_addr));
|
|
printf("\r\n");
|
|
if (logged_in) {
|
|
if (guest)
|
|
printf(" Logged in anonymously\r\n");
|
|
else
|
|
printf(" Logged in as %s\r\n", pw->pw_name);
|
|
} else if (askpasswd)
|
|
printf(" Waiting for password\r\n");
|
|
else
|
|
printf(" Waiting for user name\r\n");
|
|
printf(" TYPE: %s", typenames[type]);
|
|
if (type == TYPE_A || type == TYPE_E)
|
|
printf(", FORM: %s", formnames[form]);
|
|
if (type == TYPE_L)
|
|
#if NBBY == 8
|
|
printf(" %d", NBBY);
|
|
#else
|
|
printf(" %d", bytesize); /* need definition! */
|
|
#endif
|
|
printf("; STRUcture: %s; transfer MODE: %s\r\n",
|
|
strunames[stru], modenames[mode]);
|
|
if (data != -1)
|
|
printf(" Data connection open\r\n");
|
|
else if (pdata != -1) {
|
|
printf(" in Passive mode");
|
|
sin = &pasv_addr;
|
|
goto printaddr;
|
|
} else if (usedefault == 0) {
|
|
printf(" PORT");
|
|
sin = &data_dest;
|
|
printaddr:
|
|
a = (u_char *) &sin->sin_addr;
|
|
p = (u_char *) &sin->sin_port;
|
|
#define UC(b) (((int) b) & 0xff)
|
|
printf(" (%d,%d,%d,%d,%d,%d)\r\n", UC(a[0]),
|
|
UC(a[1]), UC(a[2]), UC(a[3]), UC(p[0]), UC(p[1]));
|
|
#undef UC
|
|
} else
|
|
printf(" No data connection\r\n");
|
|
reply(211, "End of status");
|
|
}
|
|
|
|
fatal(s)
|
|
char *s;
|
|
{
|
|
reply(451, "Error in server: %s\n", s);
|
|
reply(221, "Closing connection due to server error.");
|
|
dologout(0);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
void
|
|
reply(int n, char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
printf("%d ", n);
|
|
va_start(args, fmt);
|
|
vprintf(fmt, args);
|
|
va_end(args);
|
|
printf("\r\n");
|
|
(void)fflush(stdout);
|
|
if (debug) {
|
|
syslog(LOG_DEBUG, "<--- %d ", n);
|
|
va_start(args, fmt);
|
|
vsyslog(LOG_DEBUG, fmt, args);
|
|
va_end(args);
|
|
}
|
|
}
|
|
|
|
/* VARARGS2 */
|
|
lreply(n, fmt, p0, p1, p2, p3, p4, p5)
|
|
int n;
|
|
char *fmt;
|
|
{
|
|
printf("%d- ", n);
|
|
printf(fmt, p0, p1, p2, p3, p4, p5);
|
|
printf("\r\n");
|
|
(void)fflush(stdout);
|
|
if (debug) {
|
|
syslog(LOG_DEBUG, "<--- %d- ", n);
|
|
syslog(LOG_DEBUG, fmt, p0, p1, p2, p3, p4, p5);
|
|
}
|
|
}
|
|
|
|
ack(s)
|
|
char *s;
|
|
{
|
|
reply(250, "%s command successful.", s);
|
|
}
|
|
|
|
nack(s)
|
|
char *s;
|
|
{
|
|
reply(502, "%s command not implemented.", s);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
yyerror(s)
|
|
char *s;
|
|
{
|
|
char *cp;
|
|
|
|
if (cp = index(cbuf,'\n'))
|
|
*cp = '\0';
|
|
reply(500, "'%s': command not understood.", cbuf);
|
|
}
|
|
|
|
delete(name)
|
|
char *name;
|
|
{
|
|
struct stat st;
|
|
|
|
LOGCMD("delete", name);
|
|
if (stat(name, &st) < 0) {
|
|
perror_reply(550, name);
|
|
return;
|
|
}
|
|
if ((st.st_mode&S_IFMT) == S_IFDIR) {
|
|
if (rmdir(name) < 0) {
|
|
perror_reply(550, name);
|
|
return;
|
|
}
|
|
goto done;
|
|
}
|
|
if (unlink(name) < 0) {
|
|
perror_reply(550, name);
|
|
return;
|
|
}
|
|
done:
|
|
ack("DELE");
|
|
}
|
|
|
|
cwd(path)
|
|
char *path;
|
|
{
|
|
if (chdir(path) < 0)
|
|
perror_reply(550, path);
|
|
else
|
|
ack("CWD");
|
|
}
|
|
|
|
makedir(name)
|
|
char *name;
|
|
{
|
|
LOGCMD("mkdir", name);
|
|
if (mkdir(name, 0777) < 0)
|
|
perror_reply(550, name);
|
|
else
|
|
reply(257, "MKD command successful.");
|
|
}
|
|
|
|
removedir(name)
|
|
char *name;
|
|
{
|
|
LOGCMD("rmdir", name);
|
|
if (rmdir(name) < 0)
|
|
perror_reply(550, name);
|
|
else
|
|
ack("RMD");
|
|
}
|
|
|
|
pwd()
|
|
{
|
|
char path[MAXPATHLEN + 1];
|
|
|
|
if (getwd(path) == (char *)NULL)
|
|
reply(550, "%s.", path);
|
|
else
|
|
reply(257, "\"%s\" is current directory.", path);
|
|
}
|
|
|
|
char *
|
|
renamefrom(name)
|
|
char *name;
|
|
{
|
|
struct stat st;
|
|
|
|
if (stat(name, &st) < 0) {
|
|
perror_reply(550, name);
|
|
return ((char *)0);
|
|
}
|
|
reply(350, "File exists, ready for destination name");
|
|
return (name);
|
|
}
|
|
|
|
renamecmd(from, to)
|
|
char *from, *to;
|
|
{
|
|
LOGCMD2("rename", from, to);
|
|
if (rename(from, to) < 0)
|
|
perror_reply(550, "rename");
|
|
else
|
|
ack("RNTO");
|
|
}
|
|
|
|
dolog(sin)
|
|
struct sockaddr_in *sin;
|
|
{
|
|
struct hostent *hp = gethostbyaddr((char *)&sin->sin_addr,
|
|
sizeof (struct in_addr), AF_INET);
|
|
|
|
if (hp)
|
|
(void) strncpy(remotehost, hp->h_name, sizeof (remotehost));
|
|
else
|
|
(void) strncpy(remotehost, inet_ntoa(sin->sin_addr),
|
|
sizeof (remotehost));
|
|
#ifdef SETPROCTITLE
|
|
sprintf(proctitle, "%s: connected", remotehost);
|
|
setproctitle(proctitle);
|
|
#endif /* SETPROCTITLE */
|
|
|
|
if (logging) {
|
|
syslog(LOG_INFO, "connection from %s", remotehost);
|
|
}
|
|
}
|
|
|
|
#ifdef sgi
|
|
/*
|
|
* Record login in wtmp and wtmpx files.
|
|
*/
|
|
#include <utmpx.h>
|
|
extern int __keepwtmps_open;
|
|
extern int __keeputmp_open;
|
|
|
|
#define LOCK_TRIES 2
|
|
|
|
/* lock_utmpx
|
|
*
|
|
* file lock the entire utmpx file.
|
|
*
|
|
* This lock could try and sleep for a finite number of times,
|
|
* but this indefinite sleep locking provides greater workload
|
|
* throughput when the workload is dominated by ftp sessions.
|
|
*/
|
|
static int
|
|
lock_utmpx(void)
|
|
{
|
|
int fd;
|
|
|
|
if ((fd = open(UTMPX_FILE, O_RDWR, 0644)) != -1 &&
|
|
lockf(fd, F_LOCK, 0) != -1)
|
|
return fd;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
cap_pututxline(struct utmpx *utmp)
|
|
{
|
|
cap_t ocap;
|
|
const cap_value_t cv = CAP_DAC_WRITE;
|
|
|
|
ocap = cap_acquire(1, &cv);
|
|
(void) pututxline(utmp);
|
|
cap_surrender(ocap);
|
|
}
|
|
|
|
static void
|
|
cap_updwtmpx(const char *file, struct utmpx *utmp)
|
|
{
|
|
cap_t ocap;
|
|
const cap_value_t cv = CAP_DAC_WRITE;
|
|
|
|
ocap = cap_acquire(1, &cv);
|
|
updwtmpx(file, utmp);
|
|
cap_surrender(ocap);
|
|
}
|
|
|
|
#define unlock_utmpx(fd) \
|
|
lockf(fd, F_ULOCK, 0); \
|
|
close(fd)
|
|
|
|
#define SCPYN(a, b) (void) strncpy(a, b, sizeof (a))
|
|
|
|
static struct utmpx utmp;
|
|
static int line_num = 0;
|
|
static int didutmp;
|
|
#define MAX_LINE_NUM (sizeof(line_nc)-1)
|
|
#define LINE_ID id[3]
|
|
#define UTHLEN (sizeof(utmp.ut_host)-1)
|
|
#define NUM_SLOTS 254
|
|
#define FIRST_ASCII_PRINTABLE 33
|
|
|
|
typedef struct table {
|
|
unsigned char character;
|
|
char used;
|
|
} table_t;
|
|
|
|
/* if remotehost is short enough, store something in ut_host field to
|
|
* prevent interpretting the missing remote user info to mean that the
|
|
* local and remote usernames are the same, which IS what this means for
|
|
* rlogin utmpx entries.
|
|
*/
|
|
static char *noknowstr = "UNKNOWN";
|
|
|
|
dologin(pw, remotehost, chr)
|
|
struct passwd *pw;
|
|
char *remotehost;
|
|
int chr;
|
|
{
|
|
int rh_len, ru_len;
|
|
table_t slots_char_table[NUM_SLOTS];
|
|
char *char_p;
|
|
int found_ftp_id;
|
|
int wtmpx_lock_fd;
|
|
int i, j;
|
|
struct utmpx *utmpx_ptr;
|
|
|
|
/* initialize the slots table starting with the first ascii
|
|
printable character. */
|
|
char_p = (char *)&slots_char_table;
|
|
for (i = 0, j = FIRST_ASCII_PRINTABLE; i < NUM_SLOTS; i++) {
|
|
*char_p++ = (char)j;
|
|
*char_p++ = (char)0;
|
|
j = ++j % 256;
|
|
if (j == 0) j++;
|
|
}
|
|
rh_len = strlen(remotehost);
|
|
if (rh_len > UTHLEN)
|
|
rh_len = UTHLEN;
|
|
/*
|
|
* compute max # of chars we can grab from noknowstr array
|
|
* without truncating a remote host string of length 'rhlen'.
|
|
* -1 for the '@' separator.
|
|
*/
|
|
ru_len = (UTHLEN - rh_len - 1);
|
|
sprintf(&(utmp.ut_host[0]), "%.*s%s%.*s", ru_len,
|
|
noknowstr, (ru_len > 0 ? "@" : ""), rh_len, remotehost);
|
|
SCPYN(utmp.ut_name, pw->pw_name);
|
|
utmp.ut_pid = getpid();
|
|
utmp.ut_type = USER_PROCESS;
|
|
utmp.ut_xtime = time(0);
|
|
sprintf(utmp.ut_line, "ftp%d", utmp.ut_pid);
|
|
|
|
/*
|
|
* After the slot is found, don't call "endutent" to close the utmp
|
|
* file. It must kept open so dologout will work after chroot.
|
|
* Ditto for wtmp.
|
|
* In order to provide additional info, we attempt to add a line
|
|
* to utmp - note that BSD doesn't do this. Since the 'id' field
|
|
* is only 4 chars long and must be unique - we can only do this
|
|
* for MAX_LINE_NUM ftp connections. Regardless of whether we
|
|
* find a utmp entry, we need to log this for wtmp.
|
|
*/
|
|
if (chr)
|
|
__keeputmp_open = 1;
|
|
/* Try to lock the utmpx file. */
|
|
if ((wtmpx_lock_fd = lock_utmpx()) != -1) {
|
|
/* Locked the utmpx file so look for an available slot. */
|
|
i = 0;
|
|
while ((utmpx_ptr = getutxent()) != NULL) {
|
|
char_p = utmpx_ptr->ut_id;
|
|
/* Does the entry's ID start with "ftp?" */
|
|
if ((*char_p++ == 'f') && (*char_p++ == 't') &&
|
|
(*char_p++ == 'p'))
|
|
/* If the entry is for a dead process, grab it and then,
|
|
further down in this function, log this entry to the
|
|
wtmp. */
|
|
if (utmpx_ptr->ut_type == DEAD_PROCESS) {
|
|
utmp.ut_id[3] = *char_p;
|
|
cap_pututxline(&utmp);
|
|
didutmp = 1;
|
|
i = NUM_SLOTS;
|
|
break;
|
|
} else if (utmpx_ptr->ut_type == USER_PROCESS) {
|
|
/* The entry is for a user process, so note that it is
|
|
* used.
|
|
*/
|
|
slots_char_table[((int)*char_p)-FIRST_ASCII_PRINTABLE].used
|
|
= 1;
|
|
i++;
|
|
}
|
|
}
|
|
if (i < NUM_SLOTS) {
|
|
/* If a slot is available, find it in the table */
|
|
for (i = 0; (i < NUM_SLOTS); i++)
|
|
if (!(slots_char_table[i].used)) {
|
|
utmp.ut_id[3] = slots_char_table[i].character;
|
|
break;
|
|
}
|
|
cap_pututxline(&utmp);
|
|
didutmp = 1;
|
|
}
|
|
/* unlock the utmpx file */
|
|
unlock_utmpx(wtmpx_lock_fd);
|
|
}
|
|
if (!didutmp)
|
|
SCPYN(utmp.ut_id, "ftp?");
|
|
|
|
/*
|
|
* updwtmpx attempts to update both wtmp and wtmpx,
|
|
* which must be kept in sync for 'last' to produce
|
|
* any helpful remote-host info.
|
|
*/
|
|
if (chr)
|
|
__keepwtmps_open = 1;
|
|
cap_updwtmpx(WTMPX_FILE, &utmp);
|
|
}
|
|
|
|
/*
|
|
* Kludge used by end_login and dologout.
|
|
*/
|
|
/*ARGSUSED*/
|
|
logwtmp(a, b, c)
|
|
char *a,*b,*c;
|
|
{
|
|
static char satid[5];
|
|
const cap_value_t cap_audit_write = CAP_AUDIT_WRITE;
|
|
cap_t ocap;
|
|
|
|
utmp.ut_type = DEAD_PROCESS;
|
|
utmp.ut_xtime = time(0);
|
|
utmp.ut_host[0] = '\0';
|
|
if (didutmp) {
|
|
setutxent();
|
|
cap_pututxline(&utmp);
|
|
endutxent();
|
|
}
|
|
/* update wtmp and wtmpx files */
|
|
/* last likes this! */
|
|
utmp.ut_user[0] = '\0';
|
|
cap_updwtmpx(WTMPX_FILE, &utmp);
|
|
strncpy(satid, utmp.ut_id, sizeof(utmp.ut_id));
|
|
ocap = cap_acquire(1, &cap_audit_write);
|
|
satvwrite(SAT_AE_IDENTITY, SAT_SUCCESS,
|
|
"ftpd|+|?|Remote ftp logout id %s", satid);
|
|
cap_surrender(ocap);
|
|
}
|
|
#endif /* sgi */
|
|
|
|
/*
|
|
* Record logout in wtmp file
|
|
* and exit with supplied status.
|
|
*/
|
|
dologout(status)
|
|
int status;
|
|
{
|
|
if (logged_in) {
|
|
(void) cap_seteuid((uid_t)0);
|
|
logwtmp(ttyline, "", "");
|
|
}
|
|
/* beware of flushing buffers after a SIGPIPE */
|
|
_exit(status);
|
|
}
|
|
|
|
void
|
|
myoob()
|
|
{
|
|
char *cp;
|
|
|
|
/* only process if transfer occurring */
|
|
if (!transflag)
|
|
return;
|
|
cp = tmpline;
|
|
if (getline(cp, 7, stdin) == NULL) {
|
|
reply(221, "You could at least say goodbye.");
|
|
dologout(0);
|
|
}
|
|
upper(cp);
|
|
if (strcmp(cp, "ABOR\r\n") == 0) {
|
|
tmpline[0] = '\0';
|
|
reply(426, "Transfer aborted. Data connection closed.");
|
|
reply(226, "Abort successful");
|
|
longjmp(urgcatch, 1);
|
|
}
|
|
if (strcmp(cp, "STAT\r\n") == 0) {
|
|
if (file_size != (off_t) -1)
|
|
reply(213, "Status: %llu of %llu bytes transferred",
|
|
byte_count, file_size);
|
|
else
|
|
reply(213, "Status: %llu bytes transferred", byte_count);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Note: a response of 425 is not mentioned as a possible response to
|
|
* the PASV command in RFC959. However, it has been blessed as
|
|
* a legitimate response by Jon Postel in a telephone conversation
|
|
* with Rick Adams on 25 Jan 89.
|
|
*/
|
|
passive()
|
|
{
|
|
int len;
|
|
register char *p, *a;
|
|
|
|
pdata = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (pdata < 0) {
|
|
perror_reply(425, "Can't open passive connection");
|
|
return;
|
|
}
|
|
pasv_addr = ctrl_addr;
|
|
pasv_addr.sin_port = 0;
|
|
if (cap_bind(pdata, (struct sockaddr *)&pasv_addr, sizeof(pasv_addr)) < 0) {
|
|
goto pasv_error;
|
|
}
|
|
len = sizeof(pasv_addr);
|
|
if (getsockname(pdata, (struct sockaddr *) &pasv_addr, &len) < 0)
|
|
goto pasv_error;
|
|
if (listen(pdata, 1) < 0)
|
|
goto pasv_error;
|
|
a = (char *) &pasv_addr.sin_addr;
|
|
p = (char *) &pasv_addr.sin_port;
|
|
|
|
#define UC(b) (((int) b) & 0xff)
|
|
|
|
reply(227, "Entering Passive Mode (%d,%d,%d,%d,%d,%d)", UC(a[0]),
|
|
UC(a[1]), UC(a[2]), UC(a[3]), UC(p[0]), UC(p[1]));
|
|
return;
|
|
|
|
pasv_error:
|
|
(void) close(pdata);
|
|
pdata = -1;
|
|
perror_reply(425, "Can't open passive connection");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Generate unique name for file with basename "local".
|
|
* The file named "local" is already known to exist.
|
|
* Generates failure reply on error.
|
|
*/
|
|
char *
|
|
gunique(local)
|
|
char *local;
|
|
{
|
|
static char new[MAXPATHLEN];
|
|
struct stat st;
|
|
char *cp = rindex(local, '/');
|
|
int count = 0;
|
|
|
|
if (cp)
|
|
*cp = '\0';
|
|
if (stat(cp ? local : ".", &st) < 0) {
|
|
perror_reply(553, cp ? local : ".");
|
|
return((char *) 0);
|
|
}
|
|
if (cp)
|
|
*cp = '/';
|
|
(void) strcpy(new, local);
|
|
cp = new + strlen(new);
|
|
*cp++ = '.';
|
|
for (count = 1; count < 100; count++) {
|
|
(void) sprintf(cp, "%d", count);
|
|
if (stat(new, &st) < 0)
|
|
return(new);
|
|
}
|
|
reply(452, "Unique file name cannot be created.");
|
|
return((char *) 0);
|
|
}
|
|
|
|
/*
|
|
* Format and send reply containing system error number.
|
|
*/
|
|
perror_reply(code, string)
|
|
int code;
|
|
char *string;
|
|
{
|
|
reply(code, "%s: %s.", string, strerror(errno));
|
|
}
|
|
|
|
static char *onefile[] = {
|
|
"",
|
|
0
|
|
};
|
|
|
|
send_file_list(whichfiles)
|
|
char *whichfiles;
|
|
{
|
|
struct stat st;
|
|
DIR *dirp = NULL;
|
|
#ifdef sgi
|
|
struct dirent64 *dir;
|
|
char *ndirname = ".";
|
|
#else
|
|
struct direct *dir;
|
|
#endif
|
|
FILE *dout = NULL;
|
|
register char **dirlist, *dirname;
|
|
int simple = 0;
|
|
int freeglob = 0;
|
|
char *ppat, patbuf[MAXPATHLEN+1];
|
|
glob_t gl;
|
|
|
|
|
|
if (strstr(whichfiles, "../*/..")) {
|
|
reply(550, "Arguments too long");
|
|
return;
|
|
}
|
|
|
|
if (strchr(whichfiles, '~') != NULL) {
|
|
ppat = ftpd_tilde(whichfiles,patbuf);
|
|
if (ppat != patbuf)
|
|
strcpy(patbuf, ppat);
|
|
} else
|
|
strcpy(patbuf,whichfiles);
|
|
|
|
if (strpbrk(patbuf, "{[*?") != NULL) {
|
|
int flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_QUOTE;
|
|
|
|
memset(&gl, 0, sizeof(gl));
|
|
freeglob = 1;
|
|
if (glob(patbuf, flags, 0, &gl)) {
|
|
reply(550, "not found");
|
|
goto out;
|
|
} else if (gl.gl_pathc == 0) {
|
|
errno = ENOENT;
|
|
perror_reply(550, whichfiles);
|
|
goto out;
|
|
}
|
|
dirlist = gl.gl_pathv;
|
|
} else {
|
|
onefile[0] = patbuf;
|
|
dirlist = onefile;
|
|
simple = 1;
|
|
}
|
|
|
|
if (setjmp(urgcatch)) {
|
|
transflag = 0;
|
|
return;
|
|
}
|
|
while (dirname = *dirlist++) {
|
|
if (stat(dirname, &st) < 0) {
|
|
/*
|
|
* If user typed "ls -l", etc, and the client
|
|
* used NLST, do what the user meant.
|
|
*/
|
|
if (dirname[0] == '-' && *dirlist == NULL &&
|
|
transflag == 0) {
|
|
if ((guest || restricted) && safer_guest)
|
|
retrieve("/bin/ls -L %s", dirname);
|
|
else
|
|
retrieve("/bin/ls %s", dirname);
|
|
return;
|
|
}
|
|
perror_reply(550, whichfiles);
|
|
if (dout != NULL) {
|
|
(void) fclose(dout);
|
|
transflag = 0;
|
|
data = -1;
|
|
pdata = -1;
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ((st.st_mode&S_IFMT) == S_IFREG) {
|
|
if (dout == NULL) {
|
|
dout = dataconn("file list", (off_t)-1, "w");
|
|
if (dout == NULL)
|
|
return;
|
|
transflag++;
|
|
}
|
|
fprintf(dout, "%s%s\n", dirname,
|
|
type == TYPE_A ? "\r" : "");
|
|
byte_count += strlen(dirname) + 1;
|
|
continue;
|
|
} else if ((st.st_mode&S_IFMT) != S_IFDIR)
|
|
continue;
|
|
|
|
#ifdef sgi
|
|
/*
|
|
* we do this silliness because bsd opendir treats "" as "."
|
|
*/
|
|
if (dirname != NULL && *dirname != '\0')
|
|
ndirname = dirname;
|
|
if ((dirp = opendir(ndirname)) == NULL)
|
|
#else
|
|
if ((dirp = opendir(dirname)) == NULL)
|
|
#endif
|
|
continue;
|
|
|
|
while ((dir = readdir(dirp)) != NULL) {
|
|
char nbuf[MAXPATHLEN];
|
|
#ifdef sgi
|
|
/*
|
|
* since dirent doesn't have namelen and dirent names
|
|
* are guaranteed to be null-terminated
|
|
*/
|
|
if (dir->d_name[0] == '.' && dir->d_name[1] == '\0')
|
|
continue;
|
|
if (dir->d_name[0] == '.' && dir->d_name[1] == '.' &&
|
|
dir->d_name[2] == '\0')
|
|
continue;
|
|
#else
|
|
if (dir->d_name[0] == '.' && dir->d_namlen == 1)
|
|
continue;
|
|
if (dir->d_name[0] == '.' && dir->d_name[1] == '.' &&
|
|
dir->d_namlen == 2)
|
|
continue;
|
|
#endif /* sgi */
|
|
sprintf(nbuf, "%s/%s", dirname, dir->d_name);
|
|
|
|
/*
|
|
* We have to do a stat to insure it's
|
|
* not a directory or special file.
|
|
*/
|
|
if (simple || (stat(nbuf, &st) == 0 &&
|
|
(st.st_mode&S_IFMT) == S_IFREG)) {
|
|
if (dout == NULL) {
|
|
dout = dataconn("file list", (off_t)-1,
|
|
"w");
|
|
if (dout == NULL)
|
|
return;
|
|
transflag++;
|
|
}
|
|
if (nbuf[0] == '.' && nbuf[1] == '/')
|
|
fprintf(dout, "%s%s\n", &nbuf[2],
|
|
type == TYPE_A ? "\r" : "");
|
|
else
|
|
fprintf(dout, "%s%s\n", nbuf,
|
|
type == TYPE_A ? "\r" : "");
|
|
byte_count += strlen(nbuf) + 1;
|
|
}
|
|
}
|
|
(void) closedir(dirp);
|
|
}
|
|
|
|
if (dout == NULL)
|
|
reply(550, "No files found.");
|
|
else if (ferror(dout) != 0)
|
|
perror_reply(550, "Data connection");
|
|
else
|
|
reply(226, "Transfer complete.");
|
|
|
|
transflag = 0;
|
|
if (dout != NULL)
|
|
(void) fclose(dout);
|
|
data = -1;
|
|
pdata = -1;
|
|
out:
|
|
if (freeglob) {
|
|
freeglob = 0;
|
|
globfree(&gl);
|
|
}
|
|
}
|
|
|
|
#ifdef SETPROCTITLE
|
|
/*
|
|
* clobber argv so ps will show what we're doing.
|
|
* (stolen from sendmail)
|
|
* warning, since this is usually started from inetd.conf, it
|
|
* often doesn't have much of an environment or arglist to overwrite.
|
|
*/
|
|
|
|
/*VARARGS1*/
|
|
setproctitle(fmt, a, b, c)
|
|
char *fmt;
|
|
{
|
|
register char *p, *bp, ch;
|
|
register int i;
|
|
char buf[BUFSIZ];
|
|
|
|
(void) sprintf(buf, fmt, a, b, c);
|
|
|
|
/* make ps print our process name */
|
|
p = Argv[0];
|
|
*p++ = '-';
|
|
|
|
i = strlen(buf);
|
|
if (i > LastArgv - p - 2) {
|
|
i = LastArgv - p - 2;
|
|
buf[i] = '\0';
|
|
}
|
|
bp = buf;
|
|
while (ch = *bp++)
|
|
if (ch != '\n' && ch != '\r')
|
|
*p++ = ch;
|
|
while (p < LastArgv)
|
|
*p++ = ' ';
|
|
}
|
|
#endif /* SETPROCTITLE */
|
|
|
|
#define EOS '\0'
|
|
#define TILDE '~'
|
|
#define SLASH '/'
|
|
/*
|
|
* expand tilde from the passwd file.
|
|
*/
|
|
char *
|
|
ftpd_tilde(char *pattern, char *patbuf)
|
|
{
|
|
struct passwd *pwd;
|
|
char *h;
|
|
const char *p;
|
|
char *b;
|
|
|
|
if (*pattern != TILDE)
|
|
return pattern;
|
|
|
|
/* Copy up to the end of the string or / */
|
|
for (p = pattern + 1, h = (char *) patbuf; *p && *p != SLASH;
|
|
*h++ = *p++)
|
|
continue;
|
|
|
|
*h = EOS;
|
|
|
|
if (((char *) patbuf)[0] == EOS) {
|
|
/*
|
|
* handle a plain ~ or ~/ by expanding the password file
|
|
*/
|
|
if (pw == NULL)
|
|
return pattern;
|
|
else
|
|
h = pw->pw_dir;
|
|
}
|
|
else {
|
|
/*
|
|
* Expand a ~user
|
|
*/
|
|
if ((pwd = getpwnam((char*) patbuf)) == NULL)
|
|
return pattern;
|
|
else
|
|
h = pwd->pw_dir;
|
|
}
|
|
|
|
/* Copy the home directory */
|
|
for (b = patbuf; *h; *b++ = *h++)
|
|
continue;
|
|
|
|
/* Append the rest of the pattern */
|
|
while ((*b++ = *p++) != EOS)
|
|
continue;
|
|
|
|
return patbuf;
|
|
}
|
|
|
|
win(int size)
|
|
{
|
|
big_pipe = size ? size : ENOUGH;
|
|
reply(250, "TCP windows set to %d", big_pipe);
|
|
}
|
|
|
|
direct(int size)
|
|
{
|
|
switch (size) {
|
|
case -1:
|
|
odirect = ENOUGH;
|
|
break;
|
|
default:
|
|
odirect = size;
|
|
break;
|
|
}
|
|
reply(250, "Remote server direct I/O buffer set to %d", odirect);
|
|
}
|