diff options
Diffstat (limited to 'contrib/opie/opieftpd.c')
| -rw-r--r-- | contrib/opie/opieftpd.c | 1715 |
1 files changed, 0 insertions, 1715 deletions
diff --git a/contrib/opie/opieftpd.c b/contrib/opie/opieftpd.c deleted file mode 100644 index eb6015f4130e..000000000000 --- a/contrib/opie/opieftpd.c +++ /dev/null @@ -1,1715 +0,0 @@ -/* opieftpd.c: Main program for an FTP daemon. - -%%% portions-copyright-cmetz-96 -Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights -Reserved. The Inner Net License Version 2 applies to these portions of -the software. -You should have received a copy of the license with this software. If -you didn't get a copy, you may request one from <license@inner.net>. - -Portions of this software are Copyright 1995 by Randall Atkinson and Dan -McDonald, All Rights Reserved. All Rights under this copyright are assigned -to the U.S. Naval Research Laboratory (NRL). The NRL Copyright Notice and -License Agreement applies to this software. - - History: - - Modified by cmetz for OPIE 2.4. Add id parameter to opielogwtmp. Use - opiestrncpy(). Fix incorrect use of setproctitle(). - Modified by cmetz for OPIE 2.32. Remove include of dirent.h here; it's - done already (and conditionally) in opie_cfg.h. - Modified by cmetz for OPIE 2.31. Merged in some 4.4BSD-Lite changes. - Merged in a security fix to BSD-derived ftpds. - Modified by cmetz for OPIE 2.3. Fixed the filename at the top. - Moved LS_COMMAND here. - Modified by cmetz for OPIE 2.2. Use FUNCTION definition et al. - Removed useless strings (I don't think that removing the - ucb copyright one is a problem -- please let me know if - I'm wrong). Changed default CMASK to 077. Removed random - comments. Use ANSI stdargs for reply/lreply if we can, - added stdargs version of reply/lreply. Don't declare the - tos variable unless IP_TOS defined. Include stdargs headers - early. More headers ifdefed. Made everything static. - Got rid of gethostname() call and use of hostname. Pared - down status response for places where header files frequently - cause trouble. Made logging of user logins (ala -l) - non-optional. Moved reply()/lrepy(). Fixed some prototypes. - Modified at NRL for OPIE 2.1. Added declaration of envp. Discard - result of opiechallenge (allows access control to work). - Added patches for AIX. Symbol changes for autoconf. - Modified at NRL for OPIE 2.01. Changed password lookup handling - to avoid problems with drain-bamaged shadow password packages. - Properly handle internal state for anonymous FTP. Unlock - user accounts properly if login fails because of /etc/shells. - Make sure to close syslog by function to avoid problems with - drain bamaged syslog implementations. - Modified at NRL for OPIE 2.0. - Originally from BSD Net/2. - - There is some really, really ugly code in here. - -$FreeBSD$ -*/ -/* - * Copyright (c) 1985, 1988, 1990 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. - */ - -#include "opie_cfg.h" - -#if HAVE_ANSISTDARG -#include <stdarg.h> -#endif /* HAVE_ANSISTDARG */ - -/* - * FTP server. - */ - -#if HAVE_SYS_PARAM_H -#include <sys/param.h> -#endif /* HAVE_SYS_PARAM_H */ -#include <sys/stat.h> -/* #include <sys/ioctl.h> */ -#include <sys/socket.h> -#include <sys/wait.h> -#ifdef SYS_FCNTL_H -#include <sys/fcntl.h> -#else -#include <fcntl.h> -#endif /* SYS_FCNTL_H */ -#include <sys/types.h> - -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/ip.h> - -#define FTP_NAMES -#include <arpa/ftp.h> -#include <arpa/inet.h> -#include <arpa/telnet.h> - -#include <signal.h> -#include <fcntl.h> -#if HAVE_TIME_H -#include <time.h> -#endif /* HAVE_TIME_H */ -#if HAVE_PWD_H -#include <pwd.h> -#endif /* HAVE_PWD_H */ -#include <setjmp.h> -#include <netdb.h> -#include <errno.h> -#include <syslog.h> -#if HAVE_UNISTD_H -#include <unistd.h> -#endif /* HAVE_UNISTD_H */ -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> -#include <string.h> -#include <grp.h> - -#include "opie.h" - -#if HAVE_SHADOW_H -#include <shadow.h> -#endif /* HAVE_SHADOW_H */ - -#if HAVE_CRYPT_H -#include <crypt.h> -#endif /* HAVE_CRYPT_H */ - -#if HAVE_SYS_UTSNAME_H -#include <sys/utsname.h> -#endif /* HAVE_SYS_UTSNAME_H */ - -#ifdef _AIX -#include <sys/id.h> -#include <sys/priv.h> -#endif /* _AIX */ - -#ifdef IP_TOS -#ifndef IPTOS_THROUGHPUT -#undef IP_TOS -#endif /* !IPTOS_THROUGHPUT */ -#ifndef IPTOS_LOWDELAY -#undef IP_TOS -#endif /* !IPTOS_LOWDELAY */ -#endif /* IP_TOS */ - -extern int errno; -extern char *home; /* pointer to home directory for glob */ -extern FILE *ftpd_popen __P((char *, char *)); -extern int ftpd_pclose __P((FILE *)); -extern char cbuf[]; -extern off_t restart_point; - -static struct sockaddr_in ctrl_addr; -static struct sockaddr_in data_source; -struct sockaddr_in data_dest; -struct sockaddr_in his_addr; -static struct sockaddr_in pasv_addr; - -static int data; -jmp_buf errcatch; -static jmp_buf urgcatch; -int logged_in; -struct passwd *pw; -int debug; -int timeout = 900; /* timeout after 15 minutes of inactivity */ -int maxtimeout = 7200; /* don't allow idle time to be set beyond 2 hours */ - -#if DOANONYMOUS -static int guest; -#endif /* DOANONYMOUS */ -int type; -int form; -static int stru; /* avoid C keyword */ -static int mode; -int usedefault = 1; /* for data transfers */ -int pdata = -1; /* for passive mode */ -static int transflag; -static off_t file_size; -static off_t byte_count; - -#if (!defined(CMASK) || CMASK == 0) -#undef CMASK -#define CMASK 077 -#endif - -static int defumask = CMASK; /* default umask value */ -char tmpline[7]; -char remotehost[MAXHOSTNAMELEN]; - -/* - * Timeout intervals for retrying connections - * to hosts that don't accept PORT cmds. This - * is a kludge, but given the problems with TCP... - */ -#define SWAITMAX 90 /* wait at most 90 seconds */ -#define SWAITINT 5 /* interval between retries */ - -static int swaitmax = SWAITMAX; -static int swaitint = SWAITINT; - -#if DOTITLE -static char **Argv = NULL; /* pointer to argument vector */ -static char *LastArgv = NULL; /* end of argv */ -static char proctitle[BUFSIZ]; /* initial part of title */ -#endif /* DOTITLE */ - -static int af_pwok = 0, pwok = 0; -static struct opie opiestate; - -VOIDRET perror_reply __P((int, char *)); -VOIDRET dologout __P((int)); -char *getline __P((char *, int, FILE *)); -VOIDRET upper __P((char *)); - -static VOIDRET lostconn __P((int)); -static VOIDRET myoob __P((int)); -static FILE *getdatasock __P((char *)); -static FILE *dataconn __P((char *, off_t, char *)); -static int checkuser __P((char *)); -static VOIDRET end_login __P((void)); -static VOIDRET send_data __P((FILE *, FILE *, off_t)); -static int receive_data __P((FILE *, FILE *)); -static char *gunique __P((char *)); -static char *sgetsave __P((char *)); - -int opielogwtmp __P((char *, char *, char *, char *)); - -int fclose __P((FILE *)); - -#ifdef HAVE_ANSISTDARG -VOIDRET reply FUNCTION((stdarg is ANSI only), int n AND char *fmt AND ...) -{ - va_list ap; - char buffer[1024]; - - va_start(ap, fmt); - vsprintf(buffer, fmt, ap); - va_end(ap); - - printf("%d %s\r\n", n, buffer); - fflush(stdout); - if (debug) - syslog(LOG_DEBUG, "<--- %d %s", n, buffer); -} -#else /* HAVE_ANSISTDARG */ -VOIDRET reply FUNCTION((n, fmt, p0, p1, p2, p3, p4, p5), int n AND char *fmt AND int p0 AND int p1 AND int p2 AND int p3 AND int p4 AND int p5) -{ - printf("%d ", n); - printf(fmt, p0, p1, p2, p3, p4, p5); - printf("\r\n"); - fflush(stdout); - if (debug) { - syslog(LOG_DEBUG, "<--- %d ", n); - syslog(LOG_DEBUG, fmt, p0, p1, p2, p3, p4, p5); - } -} -#endif /* HAVE_ANSISTDARG */ - -#ifdef HAVE_ANSISTDARG -VOIDRET lreply FUNCTION((stdarg is ANSI only), int n AND char *fmt AND ...) -{ - va_list ap; - char buffer[1024]; - - va_start(ap, fmt); - vsprintf(buffer, fmt, ap); - va_end(ap); - - printf("%d- %s\r\n", n, buffer); - fflush(stdout); - if (debug) - syslog(LOG_DEBUG, "<--- %d- %s", n, buffer); -} -#else /* HAVE_ANSISTDARG */ -VOIDRET lreply FUNCTION((n, fmt, p0, p1, p2, p3, p4, p5), int n AND char *fmt AND int p0 AND int p1 AND int p2 AND int p3 AND int p4 AND int p5) -{ - printf("%d- ", n); - printf(fmt, p0, p1, p2, p3, p4, p5); - printf("\r\n"); - fflush(stdout); - if (debug) { - syslog(LOG_DEBUG, "<--- %d- ", n); - syslog(LOG_DEBUG, fmt, p0, p1, p2, p3, p4, p5); - } -} -#endif /* HAVE_ANSISTDARG */ - -VOIDRET enable_signalling FUNCTION_NOARGS -{ - signal(SIGPIPE, lostconn); - if ((int)signal(SIGURG, myoob) < 0) - syslog(LOG_ERR, "signal: %m"); -} - -VOIDRET disable_signalling FUNCTION_NOARGS -{ - signal(SIGPIPE, SIG_IGN); - if ((int)signal(SIGURG, SIG_IGN) < 0) - syslog(LOG_ERR, "signal: %m"); -} - -static VOIDRET lostconn FUNCTION((input), int input) -{ - if (debug) - syslog(LOG_DEBUG, "lost connection"); - dologout(-1); -} - -static char ttyline[20]; - -/* - * Helper function for sgetpwnam(). - */ -static char *sgetsave FUNCTION((s), char *s) -{ - char *new = malloc((unsigned) strlen(s) + 1); - - if (new == NULL) { - perror_reply(421, "Local resource failure: malloc"); - dologout(1); - /* NOTREACHED */ - } - 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). - */ -static struct passwd *sgetpwnam FUNCTION((name), char *name) -{ - static struct passwd save; - register struct passwd *p; - -#if HAVE_SHADOW - struct spwd *spwd; -#endif /* HAVE_SHADOW */ - - if ((p = getpwnam(name)) == NULL) - return (p); - -#if HAVE_SHADOW - if ((spwd = getspnam(name)) == NULL) - return NULL; - - endspent(); - - p->pw_passwd = spwd->sp_pwdp; -#endif /* HAVE_SHADOW */ - - endpwent(); - - 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 */ - -/* - * 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. - */ -int user FUNCTION((name), char *name) -{ - register char *cp; - char *shell; - - if (logged_in) { -#if DOANONYMOUS - if (guest) { - reply(530, "Can't change user from guest login."); - return -1; - } -#endif /* DOANONMOUS */ - end_login(); - } - askpasswd = 1; -#if DOANONYMOUS - guest = 0; - if (!strcmp(name, "ftp") || !strcmp(name, "anonymous")) - if (!checkuser("ftp") && !checkuser("anonymous")) - if ((pw = sgetpwnam("ftp")) != NULL) { - guest = 1; - askpasswd = 1; - reply(331, "Guest login ok, send your e-mail address as your password."); - syslog(LOG_INFO, "Anonymous FTP connection made from host %s.", remotehost); - return 0; - } -#endif /* DOANONYMOUS */ - if (pw = sgetpwnam(name)) { - if ((shell = pw->pw_shell) == NULL || *shell == 0) - shell = _PATH_BSHELL; - while ((cp = getusershell()) != NULL) - if (!strcmp(cp, shell)) - break; - endusershell(); - if (cp == NULL || checkuser(name) || ((pw->pw_passwd[0] == '*') || (pw->pw_passwd[0] == '#'))) { -#if DEBUG - if (!cp) - syslog(LOG_DEBUG, "Couldn't find %s in the list of valid shells.", pw->pw_shell); - if (checkuser(name)) - syslog(LOG_DEBUG, "checkuser failed - user in /etc/ftpusers?"); - if (((pw->pw_passwd[0] == '*') || (pw->pw_passwd[0] == '#'))) - syslog(LOG_DEBUG, "Login disabled: pw_passwd == %s", pw->pw_passwd); -#endif /* DEBUG */ - pw = (struct passwd *) NULL; - askpasswd = -1; - } - } - { - char prompt[OPIE_CHALLENGE_MAX + 1]; - - opiechallenge(&opiestate, name, prompt); - - if (askpasswd == -1) { - syslog(LOG_WARNING, "Invalid FTP user name %s attempted from %s.", name, remotehost); - pwok = 0; - } else - pwok = af_pwok && opiealways(pw->pw_dir); - -#if NEW_PROMPTS - reply(331, "Response to %s %s for %s.", prompt, -#else /* NEW_PROMPTS */ - reply(331, "OTP response %s %s for %s.", prompt, -#endif /* NEW_PROMPTS */ - pwok ? "requested" : "required", name); - } - /* Delay before reading passwd after first failed attempt to slow down - passwd-guessing programs. */ - if (login_attempts) - sleep((unsigned) login_attempts); - - return 0; -} - -/* - * Check if a user is in the file _PATH_FTPUSERS - */ -static int checkuser FUNCTION((name), char *name) -{ - register FILE *fd; - register char *p; - char line[BUFSIZ]; - - if ((fd = fopen(_PATH_FTPUSERS, "r")) != NULL) { - while (fgets(line, sizeof(line), fd) != NULL) - if ((p = strchr(line, '\n')) != NULL) { - *p = '\0'; - if (line[0] == '#') - continue; - if (!strcmp(line, name)) { - fclose(fd); - return (1); - } - } - fclose(fd); - } - return (0); -} - -/* - * Terminate login as previous user, if any, resetting state; - * used when USER command is given or login fails. - */ -static VOIDRET end_login FUNCTION_NOARGS -{ - disable_signalling(); - if (seteuid((uid_t) 0)) - syslog(LOG_ERR, "Can't set euid"); - if (logged_in) - opielogwtmp(ttyline, "", "", "ftp"); - pw = NULL; - logged_in = 0; -#if DOANONYMOUS - guest = 0; -#endif /* DOANONYMOUS */ - enable_signalling(); -} - -VOIDRET pass FUNCTION((passwd), char *passwd) -{ - int legit = askpasswd + 1, i; - - if (logged_in || askpasswd == 0) { - reply(503, "Login with USER first."); - return; - } - askpasswd = 0; - -#if DOANONYMOUS - if (!guest) { /* "ftp" is only account allowed no password */ -#endif /* DOANONYMOUS */ - i = opieverify(&opiestate, passwd); - if (legit && i && pwok) - i = strcmp(crypt(passwd, pw->pw_passwd), pw->pw_passwd); - if (!legit || i) { - reply(530, "Login incorrect."); - pw = NULL; - if (login_attempts++ >= 5) { - syslog(LOG_WARNING, - "Repeated login failures for user %s from %s", - pw->pw_name, remotehost); - exit(0); - } - return; - } -#if DOANONYMOUS - } else - if ((passwd[0] <= ' ') || checkuser(passwd)) { - reply(530, "No identity, no service."); - syslog(LOG_DEBUG, "Bogus address: %s", passwd); - exit(0); - } -#endif /* DOANONYMOUS */ - login_attempts = 0; /* this time successful */ - if (setegid((gid_t) pw->pw_gid) < 0) { - reply(550, "Can't set gid."); - syslog(LOG_DEBUG, "gid = %d, errno = %s(%d)", pw->pw_gid, strerror(errno), errno); - return; - } - initgroups(pw->pw_name, pw->pw_gid); - - /* open wtmp before chroot */ - sprintf(ttyline, "ftp%d", getpid()); - opielogwtmp(ttyline, pw->pw_name, remotehost, "ftp"); - logged_in = 1; - -#if DOANONYMOUS - if (guest) { - /* We MUST do a chdir() after the chroot. Otherwise the old current - directory will be accessible as "." outside the new root! */ - if (chroot(pw->pw_dir) < 0 || chdir("/") < 0) { - reply(550, "Can't set guest privileges."); - goto bad; - } - } else -#endif /* DOANONYMOUS */ - 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=/"); - } -/* This patch was contributed by an OPIE user. We don't know what it - does, exactly. It may or may not work. */ -#ifdef _AIX - { - priv_t priv; - priv.pv_priv[0] = 0; - priv.pv_priv[1] = 0; - setgroups(NULL, NULL); - if (setpriv(PRIV_SET|PRIV_INHERITED|PRIV_EFFECTIVE|PRIV_BEQUEATH, - &priv, sizeof(priv_t)) < 0 || - setgidx(ID_REAL|ID_EFFECTIVE, (gid_t)pw->pw_gid) < 0 || - setuidx(ID_REAL|ID_EFFECTIVE, (uid_t)pw->pw_uid) < 0 || - seteuid((uid_t)pw->pw_uid) < 0) { - reply(550, "Can't set uid (_AIX3)."); - goto bad; - } - } -#else /* _AIX */ - if (seteuid((uid_t) pw->pw_uid) < 0) { - reply(550, "Can't set uid."); - goto bad; - } -#endif /* _AIX */ - /* - * Display a login message, if it exists. - * N.B. reply(230,) must follow the message. - */ - { - FILE *fd; - - if ((fd = fopen(_PATH_FTPLOGINMESG, "r")) != NULL) { - char *cp, line[128]; - - while (fgets(line, sizeof(line), fd) != NULL) { - if ((cp = strchr(line, '\n')) != NULL) - *cp = '\0'; - lreply(230, "%s", line); - } - (void) fflush(stdout); - (void) fclose(fd); - } - } -#if DOANONYMOUS - if (guest) { - reply(230, "Guest login ok, access restrictions apply."); -#if DOTITLE - setproctitle("%s: anonymous/%.*s", remotehost, - sizeof(proctitle) - sizeof(remotehost) - sizeof(": anonymous/"), - passwd); -#endif /* DOTITLE */ - syslog(LOG_NOTICE, "ANONYMOUS FTP login from %s with ID %s", - remotehost, passwd); - } else -#endif /* DOANONYMOUS */ - { - reply(230, "User %s logged in.", pw->pw_name); - -#if DOTITLE - setproctitle("%s: %s", remotehost, pw->pw_name); -#endif /* DOTITLE */ - syslog(LOG_INFO, "FTP login from %s with user name %s", remotehost, pw->pw_name); - } - home = pw->pw_dir; /* home dir for globbing */ - umask(defumask); - return; - -bad: - /* Forget all about it... */ - end_login(); -} - -VOIDRET retrieve FUNCTION((cmd, name), char *cmd AND char *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]; - - snprintf(line, sizeof(line), cmd, name); - name = line; - fin = ftpd_popen(line, "r"), closefunc = ftpd_pclose; - st.st_size = -1; -#if HAVE_ST_BLKSIZE - st.st_blksize = BUFSIZ; -#endif /* HAVE_ST_BLKSIZE */ - } - if (fin == NULL) { - if (errno != 0) - perror_reply(550, name); - return; - } - 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, SEEK_SET /* L_SET */ ) < 0) { - perror_reply(550, name); - goto done; - } - } - dout = dataconn(name, st.st_size, "w"); - if (dout == NULL) - goto done; -#if HAVE_ST_BLKSIZE - send_data(fin, dout, st.st_blksize); -#else /* HAVE_ST_BLKSIZE */ - send_data(fin, dout, BUFSIZ); -#endif /* HAVE_ST_BLKSIZE */ - fclose(dout); - data = -1; - pdata = -1; -done: - (*closefunc) (fin); -} - -VOIDRET store FUNCTION((name, mode, unique), char *name AND char *mode AND int unique) -{ - FILE *fout, *din; - struct stat st; - int (*closefunc) (); - - if (unique && stat(name, &st) == 0 && - (name = gunique(name)) == NULL) - return; - - if (restart_point) - mode = "r+w"; - fout = fopen(name, mode); - closefunc = fclose; - if (fout == NULL) { - perror_reply(553, name); - return; - } - 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, SEEK_CUR /* L_INCR */ ) < 0) { - perror_reply(550, name); - goto done; - } - } else - if (lseek(fileno(fout), restart_point, SEEK_SET /* 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."); - } - fclose(din); - data = -1; - pdata = -1; -done: - (*closefunc) (fout); -} - -static FILE *getdatasock FUNCTION((mode), char *mode) -{ - int s, on = 1, tries; - - if (data >= 0) - return (fdopen(data, mode)); - disable_signalling(); - if (seteuid((uid_t) 0)) - syslog(LOG_ERR, "Can't set euid"); - s = socket(AF_INET, SOCK_STREAM, 0); - if (s < 0) - goto bad; - 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 (bind(s, (struct sockaddr *) & data_source, - sizeof(data_source)) >= 0) - break; - if (errno != EADDRINUSE || tries > 10) - goto bad; - sleep(tries); - } - if (seteuid((uid_t) pw->pw_uid)) - syslog(LOG_ERR, "Can't set euid"); - enable_signalling(); -#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 - return (fdopen(s, mode)); -bad: - { - int t = errno; - - if (seteuid((uid_t) pw->pw_uid)) - syslog(LOG_ERR, "Can't set euid"); - enable_signalling(); - close(s); - - errno = t; - } - return (NULL); -} - -static FILE *dataconn FUNCTION((name, size, mode), char *name AND off_t size AND char *mode) -{ - char sizebuf[32]; - FILE *file; - int retry = 0; -#ifdef IP_TOS - int tos; -#endif /* IP_TOS */ - - file_size = size; - byte_count = 0; - if (size != (off_t) - 1) - snprintf(sizebuf, sizeof(sizebuf), " (%ld bytes)", size); - else - strcpy(sizebuf, ""); - if (pdata >= 0) { - struct sockaddr_in from; - int s, fromlen = sizeof(from); - - s = accept(pdata, (struct sockaddr *) & from, &fromlen); - if (s < 0) { - reply(425, "Can't open data connection."); - close(pdata); - pdata = -1; - return (NULL); - } - close(pdata); - pdata = s; -#ifdef IP_TOS - tos = IPTOS_LOWDELAY; - setsockopt(s, IPPROTO_IP, IP_TOS, (char *) &tos, - sizeof(int)); - -#endif - 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; - 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"); - fclose(file); - data = -1; - return (NULL); - } - 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. - */ -static VOIDRET send_data FUNCTION((instr, outstr, blksize), FILE *instr AND FILE *outstr AND off_t blksize) -{ - register int c, cnt; - register char *buf; - 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; - putc('\r', outstr); - } - 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: - 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; - free(buf); - if (cnt != 0) { - if (cnt < 0) - goto file_err; - goto data_err; - } - 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. - */ -static int receive_data FUNCTION((instr, outstr), FILE *instr AND FILE *outstr) -{ - register int c; - int cnt, bare_lfs = 0; - char buf[BUFSIZ]; - - transflag++; - if (setjmp(urgcatch)) { - transflag = 0; - return (-1); - } - switch (type) { - - case TYPE_I: - case TYPE_L: - while ((cnt = read(fileno(instr), buf, sizeof buf)) > 0) { - if (write(fileno(outstr), buf, cnt) != cnt) - goto file_err; - byte_count += cnt; - } - 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') { - putc('\r', outstr); - if (c == '\0' || c == EOF) - goto contin2; - } - } - 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); -} - -VOIDRET statfilecmd FUNCTION((filename), char *filename) -{ - char line[BUFSIZ]; - FILE *fin; - int c; - -#if HAVE_LS_G_FLAG - snprintf(line, sizeof(line), "%s %s", "/bin/ls -lgA", filename); -#else /* HAVE_LS_G_FLAG */ - snprintf(line, sizeof(line), "%s %s", "/bin/ls -lA", filename); -#endif /* HAVE_LS_G_FLAG */ - 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"); - ftpd_pclose(fin); - dologout(1); - /* NOTREACHED */ - } - if (ferror(fin)) { - perror_reply(551, filename); - ftpd_pclose(fin); - return; - } - putc('\r', stdout); - } - putc(c, stdout); - } - ftpd_pclose(fin); - reply(211, "End of Status"); -} - -VOIDRET statcmd FUNCTION_NOARGS -{ -/* COMMENTED OUT STUFF BECAUSE THINGS BROKE ON SUNOS. */ - struct sockaddr_in *sin; - u_char *a, *p; - - lreply(211, "FTP server status:"); - printf(" \r\n"); - printf(" Connected to %s", remotehost); - if (!isdigit(remotehost[0])) - printf(" (%s)", inet_ntoa(his_addr.sin_addr)); - printf("\r\n"); - if (logged_in) { -#if DOANONYMOUS - if (guest) - printf(" Logged in anonymously\r\n"); - else -#endif /* DOANONYMOUS */ - 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"); - 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"); -} - -VOIDRET opiefatal FUNCTION((s), char *s) -{ - reply(451, "Error in server: %s\n", s); - reply(221, "Closing connection due to server error."); - dologout(0); - /* NOTREACHED */ -} - -static VOIDRET ack FUNCTION((s), char *s) -{ - reply(250, "%s command successful.", s); -} - -VOIDRET nack FUNCTION((s), char *s) -{ - reply(502, "%s command not implemented.", s); -} - -VOIDRET yyerror FUNCTION((s), char *s) -{ - char *cp; - - if (cp = strchr(cbuf, '\n')) - *cp = '\0'; - reply(500, "'%s': command not understood.", cbuf); -} - -VOIDRET delete FUNCTION((name), char *name) -{ - struct stat st; - - 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"); -} - -VOIDRET cwd FUNCTION((path), char *path) -{ - if (chdir(path) < 0) - perror_reply(550, path); - else - ack("CWD"); -} - -VOIDRET makedir FUNCTION((name), char *name) -{ - if (mkdir(name, 0777) < 0) - perror_reply(550, name); - else - reply(257, "MKD command successful."); -} - -VOIDRET removedir FUNCTION((name), char *name) -{ - if (rmdir(name) < 0) - perror_reply(550, name); - else - ack("RMD"); -} - -VOIDRET pwd FUNCTION_NOARGS -{ - char path[MAXPATHLEN + 1]; - - if (getcwd(path, MAXPATHLEN) == (char *) NULL) - reply(550, "%s.", path); - else - reply(257, "\"%s\" is current directory.", path); -} - -char *renamefrom FUNCTION((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); -} - -VOIDRET renamecmd FUNCTION((from, to), char *from AND char *to) -{ - if (rename(from, to) < 0) - perror_reply(550, "rename"); - else - ack("RNTO"); -} - -static VOIDRET dolog FUNCTION((sin), struct sockaddr_in *sin) -{ - struct hostent *hp = gethostbyaddr((char *) &sin->sin_addr, - sizeof(struct in_addr), AF_INET); - time_t t, time(); - - if (hp) - opiestrncpy(remotehost, hp->h_name, sizeof(remotehost)); - else - opiestrncpy(remotehost, inet_ntoa(sin->sin_addr), sizeof(remotehost)); -#if DOTITLE - setproctitle("%s: connected", remotehost); -#endif /* DOTITLE */ - - t = time((time_t *) 0); - syslog(LOG_INFO, "connection from %s at %s", - remotehost, ctime(&t)); -} - -/* - * Record logout in wtmp file - * and exit with supplied status. - */ -VOIDRET dologout FUNCTION((status), int status) -{ - disable_signalling(); - if (logged_in) { - if (seteuid((uid_t) 0)) - syslog(LOG_ERR, "Can't set euid"); - opielogwtmp(ttyline, "", "", "ftp"); - } - /* beware of flushing buffers after a SIGPIPE */ - _exit(status); -} - -static VOIDRET myoob FUNCTION((input), int input) -{ - 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: %lu of %lu bytes transferred", - byte_count, file_size); - else - reply(213, "Status: %lu 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. - */ -VOIDRET passive FUNCTION_NOARGS -{ - 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 (seteuid((uid_t) 0)) - syslog(LOG_ERR, "Can't set euid"); - if (bind(pdata, (struct sockaddr *) & pasv_addr, sizeof(pasv_addr)) < 0) { - seteuid((uid_t) pw->pw_uid); - goto pasv_error; - } - if (seteuid((uid_t) pw->pw_uid)) - syslog(LOG_ERR, "Can't set euid"); - 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: - 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. - */ -static char *gunique FUNCTION((local), char *local) -{ - static char new[MAXPATHLEN+1]; - struct stat st; - char *cp = strrchr(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 = '/'; - strcpy(new, local); - cp = new + strlen(new); - *cp++ = '.'; - for (count = 1; count < 100; count++) { - snprintf(cp, sizeof(new) - (cp - new), "%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. - */ -VOIDRET perror_reply FUNCTION((code, string), int code AND char *string) -{ - reply(code, "%s: %s.", string, strerror(errno)); -} - -static char *onefile[] = -{ - "", - 0 -}; - -VOIDRET send_file_list FUNCTION((whichfiles), char *whichfiles) -{ - struct stat st; - DIR *dirp = NULL; - struct dirent *dir; - FILE *dout = NULL; - register char **dirlist, *dirname; - int simple = 0; - - if (strpbrk(whichfiles, "~{[*?") != NULL) { - extern char **ftpglob(), *globerr; - - globerr = NULL; - dirlist = ftpglob(whichfiles); - if (globerr != NULL) { - reply(550, globerr); - return; - } else - if (dirlist == NULL) { - errno = ENOENT; - perror_reply(550, whichfiles); - return; - } - } else { - onefile[0] = whichfiles; - 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) { - retrieve("/bin/ls %s", dirname); - return; - } - perror_reply(550, whichfiles); - if (dout != NULL) { - 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; - - if ((dirp = opendir(dirname)) == NULL) - continue; - - while ((dir = readdir(dirp)) != NULL) { - char nbuf[MAXPATHLEN+1]; - - if (dir->d_name[0] == '.' && (strlen(dir->d_name) == 1)) - continue; - if (dir->d_name[0] == '.' && dir->d_name[1] == '.' && - (strlen(dir->d_name) == 2)) - continue; - - snprintf(nbuf, sizeof(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; - } - } - 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) - fclose(dout); - data = -1; - pdata = -1; -} - -#if DOTITLE -/* - * 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. - */ -VOIDRET setproctitle FUNCTION((fmt, a, b, c), char *fmt AND int a AND int b AND int c) -{ - register char *p, *bp, ch; - register int i; - char buf[BUFSIZ]; - - snprintf(buf, sizeof(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 /* DOTITLE */ - -VOIDRET catchexit FUNCTION_NOARGS -{ - closelog(); -} - -int main FUNCTION((argc, argv, envp), int argc AND char *argv[] AND char *envp[]) -{ - int addrlen, on = 1; - char *cp; -#ifdef IP_TOS - int tos; -#endif /* IP_TOS */ - - { - int i; - - for (i = sysconf(_SC_OPEN_MAX); i > 2; i--) - close(i); - } - - /* LOG_NDELAY sets up the logging connection immediately, necessary for - anonymous ftp's that chroot and can't do it later. */ - openlog("ftpd", LOG_PID | LOG_NDELAY, LOG_DAEMON); - atexit(catchexit); - addrlen = sizeof(his_addr); - if (getpeername(0, (struct sockaddr *) & his_addr, &addrlen) < 0) { - syslog(LOG_ERR, "getpeername (%s): %m", argv[0]); - exit(1); - } - addrlen = sizeof(ctrl_addr); - if (getsockname(0, (struct sockaddr *) & ctrl_addr, &addrlen) < 0) { - syslog(LOG_ERR, "getsockname (%s): %m", argv[0]); - exit(1); - } -#ifdef IP_TOS - tos = IPTOS_LOWDELAY; - if (setsockopt(0, IPPROTO_IP, IP_TOS, (char *) &tos, sizeof(int)) < 0) - syslog(LOG_WARNING, "setsockopt (IP_TOS): %m"); -#endif - data_source.sin_port = htons(ntohs(ctrl_addr.sin_port) - 1); - debug = 0; -#if DOTITLE - /* Save start and extent of argv for setproctitle. */ - Argv = argv; - while (*envp) - envp++; - LastArgv = envp[-1] + strlen(envp[-1]); -#endif /* DOTITLE */ - - argc--, argv++; - while (argc > 0 && *argv[0] == '-') { - for (cp = &argv[0][1]; *cp; cp++) - switch (*cp) { - - case 'v': - debug = 1; - break; - - case 'd': - debug = 1; - break; - - case 'l': - break; - - case 't': - timeout = atoi(++cp); - if (maxtimeout < timeout) - maxtimeout = timeout; - goto nextopt; - - case 'T': - maxtimeout = atoi(++cp); - if (timeout > maxtimeout) - timeout = maxtimeout; - goto nextopt; - - case 'u': - { - int val = 0; - - while (*++cp && *cp >= '0' && *cp <= '9') - val = val * 8 + *cp - '0'; - if (*cp) - fprintf(stderr, "ftpd: Bad value for -u\n"); - else - defumask = val; - goto nextopt; - } - - default: - fprintf(stderr, "ftpd: Unknown flag -%c ignored.\n", - *cp); - break; - } -nextopt: - argc--, argv++; - } - freopen(_PATH_DEVNULL, "w", stderr); - signal(SIGCHLD, SIG_IGN); - enable_signalling(); - - /* 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 - if (fcntl(fileno(stdin), F_SETOWN, getpid()) == -1) - 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'; - af_pwok = opieaccessfile(remotehost); - - { - FILE *fd; - char line[128]; - - /* If logins are disabled, print out the message. */ - if ((fd = fopen(_PATH_NOLOGIN,"r")) != NULL) { - while (fgets(line, sizeof(line), fd) != NULL) { - if ((cp = strchr(line, '\n')) != NULL) - *cp = '\0'; - lreply(530, "%s", line); - } - (void) fflush(stdout); - (void) fclose(fd); - reply(530, "System not available."); - exit(0); - } - if ((fd = fopen(_PATH_FTPWELCOME, "r")) != NULL) { - while (fgets(line, sizeof(line), fd) != NULL) { - if ((cp = strchr(line, '\n')) != NULL) - *cp = '\0'; - lreply(220, "%s", line); - } - (void) fflush(stdout); - (void) fclose(fd); - /* reply(220,) must follow */ - } - }; - - reply(220, "FTP server ready."); - - setjmp(errcatch); - for (;;) - yyparse(); - /* NOTREACHED */ - return 0; -} |