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-rw-r--r--crypto/kerberosIV/appl/ftp/ftpd/ftpd.c2250
1 files changed, 0 insertions, 2250 deletions
diff --git a/crypto/kerberosIV/appl/ftp/ftpd/ftpd.c b/crypto/kerberosIV/appl/ftp/ftpd/ftpd.c
deleted file mode 100644
index 6d8a392..0000000
--- a/crypto/kerberosIV/appl/ftp/ftpd/ftpd.c
+++ /dev/null
@@ -1,2250 +0,0 @@
-/*
- * Copyright (c) 1985, 1988, 1990, 1992, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#define FTP_NAMES
-#include "ftpd_locl.h"
-#ifdef KRB5
-#include <krb5.h>
-#endif
-#include "getarg.h"
-
-RCSID("$Id: ftpd.c,v 1.131.2.4 2000/09/26 09:30:26 assar Exp $");
-
-static char version[] = "Version 6.00";
-
-extern off_t restart_point;
-extern char cbuf[];
-
-struct sockaddr_storage ctrl_addr_ss;
-struct sockaddr *ctrl_addr = (struct sockaddr *)&ctrl_addr_ss;
-
-struct sockaddr_storage data_source_ss;
-struct sockaddr *data_source = (struct sockaddr *)&data_source_ss;
-
-struct sockaddr_storage data_dest_ss;
-struct sockaddr *data_dest = (struct sockaddr *)&data_dest_ss;
-
-struct sockaddr_storage his_addr_ss;
-struct sockaddr *his_addr = (struct sockaddr *)&his_addr_ss;
-
-struct sockaddr_storage pasv_addr_ss;
-struct sockaddr *pasv_addr = (struct sockaddr *)&pasv_addr_ss;
-
-int data;
-jmp_buf errcatch, urgcatch;
-int oobflag;
-int logged_in;
-struct passwd *pw;
-int debug = 0;
-int ftpd_timeout = 900; /* timeout after 15 minutes of inactivity */
-int maxtimeout = 7200;/* don't allow idle time to be set beyond 2 hours */
-int logging;
-int guest;
-int dochroot;
-int type;
-int form;
-int stru; /* avoid C keyword */
-int mode;
-int usedefault = 1; /* for data transfers */
-int pdata = -1; /* for passive mode */
-int transflag;
-off_t file_size;
-off_t byte_count;
-#if !defined(CMASK) || CMASK == 0
-#undef CMASK
-#define CMASK 027
-#endif
-int defumask = CMASK; /* default umask value */
-int guest_umask = 0777; /* Paranoia for anonymous users */
-char tmpline[10240];
-char hostname[MaxHostNameLen];
-char remotehost[MaxHostNameLen];
-static char ttyline[20];
-
-#define AUTH_PLAIN (1 << 0) /* allow sending passwords */
-#define AUTH_OTP (1 << 1) /* passwords are one-time */
-#define AUTH_FTP (1 << 2) /* allow anonymous login */
-
-static int auth_level = 0; /* Only allow kerberos login by default */
-
-/*
- * 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 */
-
-int swaitmax = SWAITMAX;
-int swaitint = SWAITINT;
-
-#ifdef HAVE_SETPROCTITLE
-char proctitle[BUFSIZ]; /* initial part of title */
-#endif /* HAVE_SETPROCTITLE */
-
-#define LOGCMD(cmd, file) \
- if (logging > 1) \
- syslog(LOG_INFO,"%s %s%s", cmd, \
- *(file) == '/' ? "" : curdir(), file);
-#define LOGCMD2(cmd, file1, file2) \
- if (logging > 1) \
- syslog(LOG_INFO,"%s %s%s %s%s", cmd, \
- *(file1) == '/' ? "" : curdir(), file1, \
- *(file2) == '/' ? "" : curdir(), file2);
-#define LOGBYTES(cmd, file, cnt) \
- if (logging > 1) { \
- if (cnt == (off_t)-1) \
- syslog(LOG_INFO,"%s %s%s", cmd, \
- *(file) == '/' ? "" : curdir(), file); \
- else \
- syslog(LOG_INFO, "%s %s%s = %ld bytes", \
- cmd, (*(file) == '/') ? "" : curdir(), file, (long)cnt); \
- }
-
-static void ack (char *);
-static void myoob (int);
-static int checkuser (char *, char *);
-static int checkaccess (char *);
-static FILE *dataconn (const char *, off_t, const char *);
-static void dolog (struct sockaddr *);
-static void end_login (void);
-static FILE *getdatasock (const char *);
-static char *gunique (char *);
-static RETSIGTYPE lostconn (int);
-static int receive_data (FILE *, FILE *);
-static void send_data (FILE *, FILE *);
-static struct passwd * sgetpwnam (char *);
-
-static char *
-curdir(void)
-{
- static char path[MaxPathLen+1]; /* path + '/' + '\0' */
-
- if (getcwd(path, sizeof(path)-1) == NULL)
- return ("");
- if (path[1] != '\0') /* special case for root dir. */
- strlcat(path, "/", sizeof(path));
- /* For guest account, skip / since it's chrooted */
- return (guest ? path+1 : path);
-}
-
-#ifndef LINE_MAX
-#define LINE_MAX 1024
-#endif
-
-static int
-parse_auth_level(char *str)
-{
- char *p;
- int ret = 0;
- char *foo = NULL;
-
- for(p = strtok_r(str, ",", &foo);
- p;
- p = strtok_r(NULL, ",", &foo)) {
- if(strcmp(p, "user") == 0)
- ;
-#ifdef OTP
- else if(strcmp(p, "otp") == 0)
- ret |= AUTH_PLAIN|AUTH_OTP;
-#endif
- else if(strcmp(p, "ftp") == 0 ||
- strcmp(p, "safe") == 0)
- ret |= AUTH_FTP;
- else if(strcmp(p, "plain") == 0)
- ret |= AUTH_PLAIN;
- else if(strcmp(p, "none") == 0)
- ret |= AUTH_PLAIN|AUTH_FTP;
- else
- warnx("bad value for -a: `%s'", p);
- }
- return ret;
-}
-
-/*
- * Print usage and die.
- */
-
-static int interactive_flag;
-static char *guest_umask_string;
-static char *port_string;
-static char *umask_string;
-static char *auth_string;
-
-int use_builtin_ls = -1;
-
-static int help_flag;
-static int version_flag;
-
-struct getargs args[] = {
- { NULL, 'a', arg_string, &auth_string, "required authentication" },
- { NULL, 'i', arg_flag, &interactive_flag, "don't assume stdin is a socket" },
- { NULL, 'p', arg_string, &port_string, "what port to listen to" },
- { NULL, 'g', arg_string, &guest_umask_string, "umask for guest logins" },
- { NULL, 'l', arg_counter, &logging, "log more stuff", "" },
- { NULL, 't', arg_integer, &ftpd_timeout, "initial timeout" },
- { NULL, 'T', arg_integer, &maxtimeout, "max timeout" },
- { NULL, 'u', arg_string, &umask_string, "umask for user logins" },
- { NULL, 'd', arg_flag, &debug, "enable debugging" },
- { NULL, 'v', arg_flag, &debug, "enable debugging" },
- { "builtin-ls", 'B', arg_flag, &use_builtin_ls, "use built-in ls to list files" },
- { "version", 0, arg_flag, &version_flag },
- { "help", 'h', arg_flag, &help_flag }
-};
-
-static int num_args = sizeof(args) / sizeof(args[0]);
-
-static void
-usage (int code)
-{
- arg_printusage(args, num_args, NULL, "");
- exit (code);
-}
-
-/* output contents of a file */
-static int
-show_file(const char *file, int code)
-{
- FILE *f;
- char buf[128];
-
- f = fopen(file, "r");
- if(f == NULL)
- return -1;
- while(fgets(buf, sizeof(buf), f)){
- buf[strcspn(buf, "\r\n")] = '\0';
- lreply(code, "%s", buf);
- }
- fclose(f);
- return 0;
-}
-
-int
-main(int argc, char **argv)
-{
- int addrlen, on = 1, tos;
- char *cp, line[LINE_MAX];
- FILE *fd;
- int port;
- struct servent *sp;
-
- int optind = 0;
-
-#ifdef KRB4
- /* detach from any tickets and tokens */
- {
- char tkfile[1024];
- snprintf(tkfile, sizeof(tkfile),
- "/tmp/ftp_%u", (unsigned)getpid());
- krb_set_tkt_string(tkfile);
- if(k_hasafs())
- k_setpag();
- }
-#endif
- if(getarg(args, num_args, argc, argv, &optind))
- usage(1);
-
- if(help_flag)
- usage(0);
-
- if(version_flag) {
- print_version(NULL);
- exit(0);
- }
-
- if(auth_string)
- auth_level = parse_auth_level(auth_string);
- {
- char *p;
- long val = 0;
-
- if(guest_umask_string) {
- val = strtol(guest_umask_string, &p, 8);
- if (*p != '\0' || val < 0)
- warnx("bad value for -g");
- else
- guest_umask = val;
- }
- if(umask_string) {
- val = strtol(umask_string, &p, 8);
- if (*p != '\0' || val < 0)
- warnx("bad value for -u");
- else
- defumask = val;
- }
- }
- if(port_string) {
- sp = getservbyname(port_string, "tcp");
- if(sp)
- port = sp->s_port;
- else
- if(isdigit(port_string[0]))
- port = htons(atoi(port_string));
- else
- warnx("bad value for -p");
- } else {
- sp = getservbyname("ftp", "tcp");
- if(sp)
- port = sp->s_port;
- else
- port = htons(21);
- }
-
- if (maxtimeout < ftpd_timeout)
- maxtimeout = ftpd_timeout;
-
-#if 0
- if (ftpd_timeout > maxtimeout)
- ftpd_timeout = maxtimeout;
-#endif
-
-
- if(interactive_flag)
- mini_inetd (port);
-
- /*
- * 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_FTP);
- addrlen = sizeof(his_addr_ss);
- if (getpeername(STDIN_FILENO, his_addr, &addrlen) < 0) {
- syslog(LOG_ERR, "getpeername (%s): %m",argv[0]);
- exit(1);
- }
- addrlen = sizeof(ctrl_addr_ss);
- if (getsockname(STDIN_FILENO, ctrl_addr, &addrlen) < 0) {
- syslog(LOG_ERR, "getsockname (%s): %m",argv[0]);
- exit(1);
- }
-#if defined(IP_TOS) && defined(HAVE_SETSOCKOPT)
- tos = IPTOS_LOWDELAY;
- if (setsockopt(STDIN_FILENO, IPPROTO_IP, IP_TOS,
- (void *)&tos, sizeof(int)) < 0)
- syslog(LOG_WARNING, "setsockopt (IP_TOS): %m");
-#endif
- data_source->sa_family = ctrl_addr->sa_family;
- socket_set_port (data_source,
- htons(ntohs(socket_get_port(ctrl_addr)) - 1));
-
- /* set this here so it can be put in wtmp */
- snprintf(ttyline, sizeof(ttyline), "ftp%u", (unsigned)getpid());
-
-
- /* freopen(_PATH_DEVNULL, "w", stderr); */
- signal(SIGPIPE, lostconn);
- signal(SIGCHLD, SIG_IGN);
-#ifdef SIGURG
- if (signal(SIGURG, myoob) == SIG_ERR)
- syslog(LOG_ERR, "signal: %m");
-#endif
-
- /* Try to handle urgent data inline */
-#if defined(SO_OOBINLINE) && defined(HAVE_SETSOCKOPT)
- if (setsockopt(0, SOL_SOCKET, SO_OOBINLINE, (void *)&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';
-
- /* If logins are disabled, print out the message. */
- if(show_file(_PATH_NOLOGIN, 530) == 0) {
- reply(530, "System not available.");
- exit(0);
- }
- show_file(_PATH_FTPWELCOME, 220);
- /* reply(220,) must follow */
- gethostname(hostname, sizeof(hostname));
-
- reply(220, "%s FTP server (%s"
-#ifdef KRB5
- "+%s"
-#endif
-#ifdef KRB4
- "+%s"
-#endif
- ") ready.", hostname, version
-#ifdef KRB5
- ,heimdal_version
-#endif
-#ifdef KRB4
- ,krb4_version
-#endif
- );
-
- setjmp(errcatch);
- for (;;)
- yyparse();
- /* NOTREACHED */
-}
-
-static RETSIGTYPE
-lostconn(int signo)
-{
-
- if (debug)
- syslog(LOG_DEBUG, "lost connection");
- dologout(-1);
-}
-
-/*
- * Helper function for sgetpwnam().
- */
-static char *
-sgetsave(char *s)
-{
- char *new = strdup(s);
-
- if (new == NULL) {
- perror_reply(421, "Local resource failure: malloc");
- dologout(1);
- /* NOTREACHED */
- }
- 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(char *name)
-{
- static struct passwd save;
- struct passwd *p;
-
- if ((p = k_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);
-}
-
-static int login_attempts; /* number of failed login attempts */
-static int askpasswd; /* had user command, ask for passwd */
-static char curname[10]; /* current USER name */
-#ifdef OTP
-OtpContext otp_ctx;
-#endif
-
-/*
- * 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.
- */
-void
-user(char *name)
-{
- char *cp, *shell;
-
- if(auth_level == 0 && !sec_complete){
- reply(530, "No login allowed without authorization.");
- return;
- }
-
- if (logged_in) {
- if (guest) {
- reply(530, "Can't change user from guest login.");
- return;
- } else if (dochroot) {
- reply(530, "Can't change user from chroot user.");
- return;
- }
- end_login();
- }
-
- guest = 0;
- if (strcmp(name, "ftp") == 0 || strcmp(name, "anonymous") == 0) {
- if ((auth_level & AUTH_FTP) == 0 ||
- checkaccess("ftp") ||
- checkaccess("anonymous"))
- reply(530, "User %s access denied.", name);
- else if ((pw = sgetpwnam("ftp")) != NULL) {
- guest = 1;
- defumask = guest_umask; /* paranoia for incoming */
- askpasswd = 1;
- reply(331, "Guest login ok, type your name as password.");
- } else
- reply(530, "User %s unknown.", name);
- if (!askpasswd && logging) {
- char data_addr[256];
-
- if (inet_ntop (his_addr->sa_family,
- socket_get_address(his_addr),
- data_addr, sizeof(data_addr)) == NULL)
- strlcpy (data_addr, "unknown address",
- sizeof(data_addr));
-
- syslog(LOG_NOTICE,
- "ANONYMOUS FTP LOGIN REFUSED FROM %s(%s)",
- remotehost, data_addr);
- }
- return;
- }
- if((auth_level & AUTH_PLAIN) == 0 && !sec_complete){
- reply(530, "Only authorized and anonymous login allowed.");
- return;
- }
- if ((pw = sgetpwnam(name))) {
- if ((shell = pw->pw_shell) == NULL || *shell == 0)
- shell = _PATH_BSHELL;
- while ((cp = getusershell()) != NULL)
- if (strcmp(cp, shell) == 0)
- break;
- endusershell();
-
- if (cp == NULL || checkaccess(name)) {
- reply(530, "User %s access denied.", name);
- if (logging) {
- char data_addr[256];
-
- if (inet_ntop (his_addr->sa_family,
- socket_get_address(his_addr),
- data_addr,
- sizeof(data_addr)) == NULL)
- strlcpy (data_addr,
- "unknown address",
- sizeof(data_addr));
-
- syslog(LOG_NOTICE,
- "FTP LOGIN REFUSED FROM %s(%s), %s",
- remotehost,
- data_addr,
- name);
- }
- pw = (struct passwd *) NULL;
- return;
- }
- }
- if (logging)
- strlcpy(curname, name, sizeof(curname));
- if(sec_complete) {
- if(sec_userok(name) == 0)
- do_login(232, name);
- else
- reply(530, "User %s access denied.", name);
- } else {
- char ss[256];
-
-#ifdef OTP
- if (otp_challenge(&otp_ctx, name, ss, sizeof(ss)) == 0) {
- reply(331, "Password %s for %s required.",
- ss, name);
- askpasswd = 1;
- } else
-#endif
- if ((auth_level & AUTH_OTP) == 0) {
- reply(331, "Password required for %s.", name);
- askpasswd = 1;
- } else {
- char *s;
-
-#ifdef OTP
- if ((s = otp_error (&otp_ctx)) != NULL)
- lreply(530, "OTP: %s", s);
-#endif
- reply(530,
- "Only authorized, anonymous"
-#ifdef OTP
- " and OTP "
-#endif
- "login allowed.");
- }
-
- }
- /*
- * Delay before reading passwd after first failed
- * attempt to slow down passwd-guessing programs.
- */
- if (login_attempts)
- sleep(login_attempts);
-}
-
-/*
- * Check if a user is in the file "fname"
- */
-static int
-checkuser(char *fname, char *name)
-{
- FILE *fd;
- int found = 0;
- char *p, line[BUFSIZ];
-
- if ((fd = fopen(fname, "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) == 0) {
- found = 1;
- break;
- }
- }
- fclose(fd);
- }
- return (found);
-}
-
-
-/*
- * Determine whether a user has access, based on information in
- * _PATH_FTPUSERS. The users are listed one per line, with `allow'
- * or `deny' after the username. If anything other than `allow', or
- * just nothing, is given after the username, `deny' is assumed.
- *
- * If the user is not found in the file, but the pseudo-user `*' is,
- * the permission is taken from that line.
- *
- * This preserves the old semantics where if a user was listed in the
- * file he was denied, otherwise he was allowed.
- *
- * Return 1 if the user is denied, or 0 if he is allowed. */
-
-static int
-match(const char *pattern, const char *string)
-{
- return fnmatch(pattern, string, FNM_NOESCAPE);
-}
-
-static int
-checkaccess(char *name)
-{
-#define ALLOWED 0
-#define NOT_ALLOWED 1
- FILE *fd;
- int allowed = ALLOWED;
- char *user, *perm, line[BUFSIZ];
- char *foo;
-
- fd = fopen(_PATH_FTPUSERS, "r");
-
- if(fd == NULL)
- return allowed;
-
- while (fgets(line, sizeof(line), fd) != NULL) {
- foo = NULL;
- user = strtok_r(line, " \t\n", &foo);
- if (user == NULL || user[0] == '#')
- continue;
- perm = strtok_r(NULL, " \t\n", &foo);
- if (match(user, name) == 0){
- if(perm && strcmp(perm, "allow") == 0)
- allowed = ALLOWED;
- else
- allowed = NOT_ALLOWED;
- break;
- }
- }
- fclose(fd);
- return allowed;
-}
-#undef ALLOWED
-#undef NOT_ALLOWED
-
-
-int do_login(int code, char *passwd)
-{
- FILE *fd;
- login_attempts = 0; /* this time successful */
- if (setegid((gid_t)pw->pw_gid) < 0) {
- reply(550, "Can't set gid.");
- return -1;
- }
- initgroups(pw->pw_name, pw->pw_gid);
-
- /* open wtmp before chroot */
- ftpd_logwtmp(ttyline, pw->pw_name, remotehost);
- logged_in = 1;
-
- dochroot = checkuser(_PATH_FTPCHROOT, pw->pw_name);
- 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.");
- return -1;
- }
- } else if (dochroot) {
- if (chroot(pw->pw_dir) < 0 || chdir("/") < 0) {
- reply(550, "Can't change root.");
- return -1;
- }
- } 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);
- return -1;
- } else
- lreply(code, "No directory! Logging in with home=/");
- }
- if (seteuid((uid_t)pw->pw_uid) < 0) {
- reply(550, "Can't set uid.");
- return -1;
- }
-
- if(use_builtin_ls == -1) {
- struct stat st;
- /* if /bin/ls exist and is a regular file, use it, otherwise
- use built-in ls */
- if(stat("/bin/ls", &st) == 0 &&
- S_ISREG(st.st_mode))
- use_builtin_ls = 0;
- else
- use_builtin_ls = 1;
- }
-
- /*
- * Display a login message, if it exists.
- * N.B. reply(code,) must follow the message.
- */
- show_file(_PATH_FTPLOGINMESG, code);
- if(show_file(_PATH_ISSUE_NET, code) != 0)
- show_file(_PATH_ISSUE, code);
- if (guest) {
- reply(code, "Guest login ok, access restrictions apply.");
-#ifdef HAVE_SETPROCTITLE
- snprintf (proctitle, sizeof(proctitle),
- "%s: anonymous/%s",
- remotehost,
- passwd);
- setproctitle("%s", proctitle);
-#endif /* HAVE_SETPROCTITLE */
- if (logging) {
- char data_addr[256];
-
- if (inet_ntop (his_addr->sa_family,
- socket_get_address(his_addr),
- data_addr, sizeof(data_addr)) == NULL)
- strlcpy (data_addr, "unknown address",
- sizeof(data_addr));
-
- syslog(LOG_INFO, "ANONYMOUS FTP LOGIN FROM %s(%s), %s",
- remotehost,
- data_addr,
- passwd);
- }
- } else {
- reply(code, "User %s logged in.", pw->pw_name);
-#ifdef HAVE_SETPROCTITLE
- snprintf(proctitle, sizeof(proctitle), "%s: %s", remotehost, pw->pw_name);
- setproctitle("%s", proctitle);
-#endif /* HAVE_SETPROCTITLE */
- if (logging) {
- char data_addr[256];
-
- if (inet_ntop (his_addr->sa_family,
- socket_get_address(his_addr),
- data_addr, sizeof(data_addr)) == NULL)
- strlcpy (data_addr, "unknown address",
- sizeof(data_addr));
-
- syslog(LOG_INFO, "FTP LOGIN FROM %s(%s) as %s",
- remotehost,
- data_addr,
- pw->pw_name);
- }
- }
- umask(defumask);
- return 0;
-}
-
-/*
- * Terminate login as previous user, if any, resetting state;
- * used when USER command is given or login fails.
- */
-static void
-end_login(void)
-{
-
- seteuid((uid_t)0);
- if (logged_in)
- ftpd_logwtmp(ttyline, "", "");
- pw = NULL;
- logged_in = 0;
- guest = 0;
- dochroot = 0;
-}
-
-void
-pass(char *passwd)
-{
- int rval;
-
- /* some clients insists on sending a password */
- if (logged_in && askpasswd == 0){
- reply(230, "Dumpucko!");
- return;
- }
-
- if (logged_in || askpasswd == 0) {
- reply(503, "Login with USER first.");
- return;
- }
- askpasswd = 0;
- rval = 1;
- if (!guest) { /* "ftp" is only account allowed no password */
- if (pw == NULL)
- rval = 1; /* failure below */
-#ifdef OTP
- else if (otp_verify_user (&otp_ctx, passwd) == 0) {
- rval = 0;
- }
-#endif
- else if((auth_level & AUTH_OTP) == 0) {
-#ifdef KRB4
- char realm[REALM_SZ];
- if((rval = krb_get_lrealm(realm, 1)) == KSUCCESS)
- rval = krb_verify_user(pw->pw_name,
- "", realm,
- passwd,
- KRB_VERIFY_SECURE, NULL);
- if (rval == KSUCCESS ) {
- chown (tkt_string(), pw->pw_uid, pw->pw_gid);
- if(k_hasafs())
- krb_afslog(0, 0);
- } else
-#endif
- rval = unix_verify_user(pw->pw_name, passwd);
- } else {
- char *s;
-
-#ifdef OTP
- if ((s = otp_error(&otp_ctx)) != NULL)
- lreply(530, "OTP: %s", s);
-#endif
- }
- memset (passwd, 0, strlen(passwd));
-
- /*
- * If rval == 1, the user failed the authentication
- * check above. If rval == 0, either Kerberos or
- * local authentication succeeded.
- */
- if (rval) {
- char data_addr[256];
-
- if (inet_ntop (his_addr->sa_family,
- socket_get_address(his_addr),
- data_addr, sizeof(data_addr)) == NULL)
- strlcpy (data_addr, "unknown address",
- sizeof(data_addr));
-
- reply(530, "Login incorrect.");
- if (logging)
- syslog(LOG_NOTICE,
- "FTP LOGIN FAILED FROM %s(%s), %s",
- remotehost,
- data_addr,
- curname);
- pw = NULL;
- if (login_attempts++ >= 5) {
- syslog(LOG_NOTICE,
- "repeated login failures from %s(%s)",
- remotehost,
- data_addr);
- exit(0);
- }
- return;
- }
- }
- if(!do_login(230, passwd))
- return;
-
- /* Forget all about it... */
- end_login();
-}
-
-void
-retrieve(const char *cmd, char *name)
-{
- FILE *fin = NULL, *dout;
- struct stat st;
- int (*closefunc) (FILE *);
- char line[BUFSIZ];
-
-
- if (cmd == 0) {
- fin = fopen(name, "r");
- closefunc = fclose;
- st.st_size = 0;
- if(fin == NULL){
- int save_errno = errno;
- struct cmds {
- const char *ext;
- const char *cmd;
- const char *rev_cmd;
- } cmds[] = {
- {".tar", "/bin/gtar cPf - %s", NULL},
- {".tar.gz", "/bin/gtar zcPf - %s", NULL},
- {".tar.Z", "/bin/gtar ZcPf - %s", NULL},
- {".gz", "/bin/gzip -c -- %s", "/bin/gzip -c -d -- %s"},
- {".Z", "/bin/compress -c -- %s", "/bin/uncompress -c -- %s"},
- {NULL, NULL}
- };
- struct cmds *p;
- for(p = cmds; p->ext; p++){
- char *tail = name + strlen(name) - strlen(p->ext);
- char c = *tail;
-
- if(strcmp(tail, p->ext) == 0 &&
- (*tail = 0) == 0 &&
- access(name, R_OK) == 0){
- snprintf (line, sizeof(line), p->cmd, name);
- *tail = c;
- break;
- }
- *tail = c;
- if (p->rev_cmd != NULL) {
- char *ext;
-
- asprintf(&ext, "%s%s", name, p->ext);
- if (ext != NULL) {
- if (access(ext, R_OK) == 0) {
- snprintf (line, sizeof(line),
- p->rev_cmd, ext);
- free(ext);
- break;
- }
- free(ext);
- }
- }
-
- }
- if(p->ext){
- fin = ftpd_popen(line, "r", 0, 0);
- closefunc = ftpd_pclose;
- st.st_size = -1;
- cmd = line;
- } else
- errno = save_errno;
- }
- } else {
- snprintf(line, sizeof(line), cmd, name);
- name = line;
- fin = ftpd_popen(line, "r", 1, 0);
- closefunc = ftpd_pclose;
- st.st_size = -1;
- }
- if (fin == NULL) {
- if (errno != 0) {
- perror_reply(550, name);
- if (cmd == 0) {
- LOGCMD("get", name);
- }
- }
- return;
- }
- byte_count = -1;
- if (cmd == 0){
- if(fstat(fileno(fin), &st) < 0 || !S_ISREG(st.st_mode)) {
- reply(550, "%s: not a plain file.", name);
- goto done;
- }
- }
- if (restart_point) {
- if (type == TYPE_A) {
- off_t i, n;
- int 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) < 0) {
- perror_reply(550, name);
- goto done;
- }
- }
- dout = dataconn(name, st.st_size, "w");
- if (dout == NULL)
- goto done;
- set_buffer_size(fileno(dout), 0);
- send_data(fin, dout);
- fclose(dout);
- data = -1;
- pdata = -1;
-done:
- if (cmd == 0)
- LOGBYTES("get", name, byte_count);
- (*closefunc)(fin);
-}
-
-/* filename sanity check */
-
-int
-filename_check(char *filename)
-{
- static const char good_chars[] = "+-=_,.";
- char *p;
-
- p = strrchr(filename, '/');
- if(p)
- filename = p + 1;
-
- p = filename;
-
- if(isalnum(*p)){
- p++;
- while(*p && (isalnum(*p) || strchr(good_chars, *p)))
- p++;
- if(*p == '\0')
- return 0;
- }
- lreply(553, "\"%s\" is an illegal filename.", filename);
- lreply(553, "The filename must start with an alphanumeric "
- "character and must only");
- reply(553, "consist of alphanumeric characters or any of the following: %s",
- good_chars);
- return 1;
-}
-
-void
-do_store(char *name, char *mode, int unique)
-{
- FILE *fout, *din;
- struct stat st;
- int (*closefunc) (FILE *);
-
- if(guest && filename_check(name))
- return;
- if (unique && stat(name, &st) == 0 &&
- (name = gunique(name)) == NULL) {
- LOGCMD(*mode == 'w' ? "put" : "append", name);
- return;
- }
-
- if (restart_point)
- mode = "r+";
- 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) {
- off_t i, n;
- int 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) < 0) {
- perror_reply(550, name);
- goto done;
- }
- } else if (lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
- perror_reply(550, name);
- goto done;
- }
- }
- din = dataconn(name, (off_t)-1, "r");
- if (din == NULL)
- goto done;
- set_buffer_size(fileno(din), 1);
- 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:
- LOGBYTES(*mode == 'w' ? "put" : "append", name, byte_count);
- (*closefunc)(fout);
-}
-
-static FILE *
-getdatasock(const char *mode)
-{
- int s, t, tries;
-
- if (data >= 0)
- return (fdopen(data, mode));
- seteuid(0);
- s = socket(ctrl_addr->sa_family, SOCK_STREAM, 0);
- if (s < 0)
- goto bad;
- socket_set_reuseaddr (s, 1);
- /* anchor socket to avoid multi-homing problems */
- socket_set_address_and_port (data_source,
- socket_get_address (ctrl_addr),
- socket_get_port (data_source));
-
- for (tries = 1; ; tries++) {
- if (bind(s, data_source,
- socket_sockaddr_size (data_source)) >= 0)
- break;
- if (errno != EADDRINUSE || tries > 10)
- goto bad;
- sleep(tries);
- }
- seteuid(pw->pw_uid);
-#ifdef IPTOS_THROUGHPUT
- socket_set_tos (s, IPTOS_THROUGHPUT);
-#endif
- return (fdopen(s, mode));
-bad:
- /* Return the real value of errno (close may change it) */
- t = errno;
- seteuid((uid_t)pw->pw_uid);
- close(s);
- errno = t;
- return (NULL);
-}
-
-static FILE *
-dataconn(const char *name, off_t size, const char *mode)
-{
- char sizebuf[32];
- FILE *file;
- int retry = 0;
-
- file_size = size;
- byte_count = 0;
- if (size >= 0)
- snprintf(sizebuf, sizeof(sizebuf), " (%ld bytes)", (long)size);
- else
- *sizebuf = '\0';
- if (pdata >= 0) {
- struct sockaddr_storage from_ss;
- struct sockaddr *from = (struct sockaddr *)&from_ss;
- int s;
- int fromlen = sizeof(from_ss);
-
- s = accept(pdata, from, &fromlen);
- if (s < 0) {
- reply(425, "Can't open data connection.");
- close(pdata);
- pdata = -1;
- return (NULL);
- }
- close(pdata);
- pdata = s;
-#if defined(IP_TOS) && defined(HAVE_SETSOCKOPT)
- {
- int tos = IPTOS_THROUGHPUT;
-
- setsockopt(s, IPPROTO_IP, IP_TOS, (void *)&tos,
- sizeof(tos));
- }
-#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) {
- char data_addr[256];
-
- if (inet_ntop (data_source->sa_family,
- socket_get_address(data_source),
- data_addr, sizeof(data_addr)) == NULL)
- strlcpy (data_addr, "unknown address",
- sizeof(data_addr));
-
- reply(425, "Can't create data socket (%s,%d): %s.",
- data_addr,
- socket_get_port (data_source),
- strerror(errno));
- return (NULL);
- }
- data = fileno(file);
- while (connect(data, data_dest,
- socket_sockaddr_size(data_dest)) < 0) {
- if (errno == EADDRINUSE && retry < swaitmax) {
- sleep(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 void
-send_data(FILE *instr, FILE *outstr)
-{
- int c, cnt, filefd, netfd;
- static char *buf;
- static size_t bufsize;
-
- transflag++;
- if (setjmp(urgcatch)) {
- transflag = 0;
- return;
- }
- switch (type) {
-
- case TYPE_A:
- while ((c = getc(instr)) != EOF) {
- byte_count++;
- if(c == '\n')
- sec_putc('\r', outstr);
- sec_putc(c, outstr);
- }
- sec_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 defined(HAVE_MMAP) && !defined(NO_MMAP)
-#ifndef MAP_FAILED
-#define MAP_FAILED (-1)
-#endif
- {
- struct stat st;
- char *chunk;
- int in = fileno(instr);
- if(fstat(in, &st) == 0 && S_ISREG(st.st_mode)
- && st.st_size > 0) {
- /*
- * mmap zero bytes has potential of loosing, don't do it.
- */
- chunk = mmap(0, st.st_size, PROT_READ,
- MAP_SHARED, in, 0);
- if((void *)chunk != (void *)MAP_FAILED) {
- cnt = st.st_size - restart_point;
- sec_write(fileno(outstr), chunk + restart_point, cnt);
- if (munmap(chunk, st.st_size) < 0)
- warn ("munmap");
- sec_fflush(outstr);
- byte_count = cnt;
- transflag = 0;
- }
- }
- }
-#endif
- if(transflag) {
- struct stat st;
-
- netfd = fileno(outstr);
- filefd = fileno(instr);
- buf = alloc_buffer (buf, &bufsize,
- fstat(filefd, &st) >= 0 ? &st : NULL);
- if (buf == NULL) {
- transflag = 0;
- perror_reply(451, "Local resource failure: malloc");
- return;
- }
- while ((cnt = read(filefd, buf, bufsize)) > 0 &&
- sec_write(netfd, buf, cnt) == cnt)
- byte_count += cnt;
- sec_fflush(outstr); /* to end an encrypted stream */
- transflag = 0;
- 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(FILE *instr, FILE *outstr)
-{
- int cnt, bare_lfs = 0;
- static char *buf;
- static size_t bufsize;
- struct stat st;
-
- transflag++;
- if (setjmp(urgcatch)) {
- transflag = 0;
- return (-1);
- }
-
- buf = alloc_buffer (buf, &bufsize,
- fstat(fileno(outstr), &st) >= 0 ? &st : NULL);
- if (buf == NULL) {
- transflag = 0;
- perror_reply(451, "Local resource failure: malloc");
- return -1;
- }
-
- switch (type) {
-
- case TYPE_I:
- case TYPE_L:
- while ((cnt = sec_read(fileno(instr), buf, bufsize)) > 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:
- {
- char *p, *q;
- int cr_flag = 0;
- while ((cnt = sec_read(fileno(instr),
- buf + cr_flag,
- bufsize - cr_flag)) > 0){
- byte_count += cnt;
- cnt += cr_flag;
- cr_flag = 0;
- for(p = buf, q = buf; p < buf + cnt;) {
- if(*p == '\n')
- bare_lfs++;
- if(*p == '\r') {
- if(p == buf + cnt - 1){
- cr_flag = 1;
- p++;
- continue;
- }else if(p[1] == '\n'){
- *q++ = '\n';
- p += 2;
- continue;
- }
- }
- *q++ = *p++;
- }
- fwrite(buf, q - buf, 1, outstr);
- if(cr_flag)
- buf[0] = '\r';
- }
- if(cr_flag)
- putc('\r', outstr);
- fflush(outstr);
- if (ferror(instr))
- goto data_err;
- if (ferror(outstr))
- goto file_err;
- transflag = 0;
- if (bare_lfs) {
- lreply(226, "WARNING! %d bare linefeeds received in ASCII mode\r\n"
- " File may not have transferred correctly.\r\n",
- bare_lfs);
- }
- 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);
-}
-
-void
-statfilecmd(char *filename)
-{
- FILE *fin;
- int c;
- char line[LINE_MAX];
-
- snprintf(line, sizeof(line), "/bin/ls -la -- %s", filename);
- fin = ftpd_popen(line, "r", 1, 0);
- 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");
-}
-
-void
-statcmd(void)
-{
-#if 0
- struct sockaddr_in *sin;
- u_char *a, *p;
-
- lreply(211, "%s FTP server (%s) 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");
-#endif
- reply(211, "End of status");
-}
-
-void
-fatal(char *s)
-{
-
- reply(451, "Error in server: %s\n", s);
- reply(221, "Closing connection due to server error.");
- dologout(0);
- /* NOTREACHED */
-}
-
-static void
-int_reply(int, char *, const char *, va_list)
-#ifdef __GNUC__
-__attribute__ ((format (printf, 3, 0)))
-#endif
-;
-
-static void
-int_reply(int n, char *c, const char *fmt, va_list ap)
-{
- char buf[10240];
- char *p;
- p=buf;
- if(n){
- snprintf(p, sizeof(buf), "%d%s", n, c);
- p+=strlen(p);
- }
- vsnprintf(p, sizeof(buf) - strlen(p), fmt, ap);
- p+=strlen(p);
- snprintf(p, sizeof(buf) - strlen(p), "\r\n");
- p+=strlen(p);
- sec_fprintf(stdout, "%s", buf);
- fflush(stdout);
- if (debug)
- syslog(LOG_DEBUG, "<--- %s- ", buf);
-}
-
-void
-reply(int n, const char *fmt, ...)
-{
- va_list ap;
- va_start(ap, fmt);
- int_reply(n, " ", fmt, ap);
- delete_ftp_command();
- va_end(ap);
-}
-
-void
-lreply(int n, const char *fmt, ...)
-{
- va_list ap;
- va_start(ap, fmt);
- int_reply(n, "-", fmt, ap);
- va_end(ap);
-}
-
-void
-nreply(const char *fmt, ...)
-{
- va_list ap;
- va_start(ap, fmt);
- int_reply(0, NULL, fmt, ap);
- va_end(ap);
-}
-
-static void
-ack(char *s)
-{
-
- reply(250, "%s command successful.", s);
-}
-
-void
-nack(char *s)
-{
-
- reply(502, "%s command not implemented.", s);
-}
-
-/* ARGSUSED */
-void
-yyerror(char *s)
-{
- char *cp;
-
- if ((cp = strchr(cbuf,'\n')))
- *cp = '\0';
- reply(500, "'%s': command not understood.", cbuf);
-}
-
-void
-do_delete(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");
-}
-
-void
-cwd(char *path)
-{
-
- if (chdir(path) < 0)
- perror_reply(550, path);
- else
- ack("CWD");
-}
-
-void
-makedir(char *name)
-{
-
- LOGCMD("mkdir", name);
- if(guest && filename_check(name))
- return;
- if (mkdir(name, 0777) < 0)
- perror_reply(550, name);
- else{
- if(guest)
- chmod(name, 0700); /* guest has umask 777 */
- reply(257, "MKD command successful.");
- }
-}
-
-void
-removedir(char *name)
-{
-
- LOGCMD("rmdir", name);
- if (rmdir(name) < 0)
- perror_reply(550, name);
- else
- ack("RMD");
-}
-
-void
-pwd(void)
-{
- char path[MaxPathLen];
- char *ret;
-
- /* SunOS has a broken getcwd that does popen(pwd) (!!!), this
- * failes miserably when running chroot
- */
- ret = getcwd(path, sizeof(path));
- if (ret == NULL)
- reply(550, "%s.", strerror(errno));
- else
- reply(257, "\"%s\" is current directory.", path);
-}
-
-char *
-renamefrom(char *name)
-{
- struct stat st;
-
- if (stat(name, &st) < 0) {
- perror_reply(550, name);
- return NULL;
- }
- reply(350, "File exists, ready for destination name");
- return (name);
-}
-
-void
-renamecmd(char *from, char *to)
-{
-
- LOGCMD2("rename", from, to);
- if(guest && filename_check(to))
- return;
- if (rename(from, to) < 0)
- perror_reply(550, "rename");
- else
- ack("RNTO");
-}
-
-static void
-dolog(struct sockaddr *sa)
-{
- struct sockaddr_in *sin = (struct sockaddr_in *)sa;
-
- inaddr2str (sin->sin_addr, remotehost, sizeof(remotehost));
-#ifdef HAVE_SETPROCTITLE
- snprintf(proctitle, sizeof(proctitle), "%s: connected", remotehost);
- setproctitle("%s", proctitle);
-#endif /* HAVE_SETPROCTITLE */
-
- if (logging) {
- char data_addr[256];
-
- if (inet_ntop (his_addr->sa_family,
- socket_get_address(his_addr),
- data_addr, sizeof(data_addr)) == NULL)
- strlcpy (data_addr, "unknown address",
- sizeof(data_addr));
-
-
- syslog(LOG_INFO, "connection from %s(%s)",
- remotehost,
- data_addr);
- }
-}
-
-/*
- * Record logout in wtmp file
- * and exit with supplied status.
- */
-void
-dologout(int status)
-{
- transflag = 0;
- if (logged_in) {
- seteuid((uid_t)0);
- ftpd_logwtmp(ttyline, "", "");
-#ifdef KRB4
- cond_kdestroy();
-#endif
- }
- /* beware of flushing buffers after a SIGPIPE */
-#ifdef XXX
- exit(status);
-#else
- _exit(status);
-#endif
-}
-
-void abor(void)
-{
-}
-
-static void
-myoob(int signo)
-{
-#if 0
- char *cp;
-#endif
-
- /* only process if transfer occurring */
- if (!transflag)
- return;
-
- /* This is all XXX */
- oobflag = 1;
- /* if the command resulted in a new command,
- parse that as well */
- do{
- yyparse();
- } while(ftp_command);
- oobflag = 0;
-
-#if 0
- cp = tmpline;
- if (ftpd_getline(cp, 7) == 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: %ld of %ld bytes transferred",
- (long)byte_count,
- (long)file_size);
- else
- reply(213, "Status: %ld bytes transferred"
- (long)byte_count);
- }
-#endif
-}
-
-/*
- * 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.
- */
-void
-pasv(void)
-{
- int len;
- char *p, *a;
- struct sockaddr_in *sin;
-
- if (ctrl_addr->sa_family != AF_INET) {
- reply(425,
- "You cannot do PASV with something that's not IPv4");
- return;
- }
-
- pdata = socket(ctrl_addr->sa_family, SOCK_STREAM, 0);
- if (pdata < 0) {
- perror_reply(425, "Can't open passive connection");
- return;
- }
- pasv_addr->sa_family = ctrl_addr->sa_family;
- socket_set_address_and_port (pasv_addr,
- socket_get_address (ctrl_addr),
- 0);
- seteuid(0);
- if (bind(pdata, pasv_addr, socket_sockaddr_size (pasv_addr)) < 0) {
- seteuid(pw->pw_uid);
- goto pasv_error;
- }
- seteuid(pw->pw_uid);
- len = sizeof(pasv_addr_ss);
- if (getsockname(pdata, pasv_addr, &len) < 0)
- goto pasv_error;
- if (listen(pdata, 1) < 0)
- goto pasv_error;
- sin = (struct sockaddr_in *)pasv_addr;
- a = (char *) &sin->sin_addr;
- p = (char *) &sin->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;
-}
-
-void
-epsv(char *proto)
-{
- int len;
-
- pdata = socket(ctrl_addr->sa_family, SOCK_STREAM, 0);
- if (pdata < 0) {
- perror_reply(425, "Can't open passive connection");
- return;
- }
- pasv_addr->sa_family = ctrl_addr->sa_family;
- socket_set_address_and_port (pasv_addr,
- socket_get_address (ctrl_addr),
- 0);
- seteuid(0);
- if (bind(pdata, pasv_addr, socket_sockaddr_size (pasv_addr)) < 0) {
- seteuid(pw->pw_uid);
- goto pasv_error;
- }
- seteuid(pw->pw_uid);
- len = sizeof(pasv_addr_ss);
- if (getsockname(pdata, pasv_addr, &len) < 0)
- goto pasv_error;
- if (listen(pdata, 1) < 0)
- goto pasv_error;
-
- reply(229, "Entering Extended Passive Mode (|||%d|)",
- ntohs(socket_get_port (pasv_addr)));
- return;
-
-pasv_error:
- close(pdata);
- pdata = -1;
- perror_reply(425, "Can't open passive connection");
- return;
-}
-
-void
-eprt(char *str)
-{
- char *end;
- char sep;
- int af;
- int ret;
- int port;
-
- usedefault = 0;
- if (pdata >= 0) {
- close(pdata);
- pdata = -1;
- }
-
- sep = *str++;
- if (sep == '\0') {
- reply(500, "Bad syntax in EPRT");
- return;
- }
- af = strtol (str, &end, 0);
- if (af == 0 || *end != sep) {
- reply(500, "Bad syntax in EPRT");
- return;
- }
- str = end + 1;
- switch (af) {
-#ifdef HAVE_IPV6
- case 2 :
- data_dest->sa_family = AF_INET6;
- break;
-#endif
- case 1 :
- data_dest->sa_family = AF_INET;
- break;
- default :
- reply(522, "Network protocol %d not supported, use (1"
-#ifdef HAVE_IPV6
- ",2"
-#endif
- ")", af);
- return;
- }
- end = strchr (str, sep);
- if (end == NULL) {
- reply(500, "Bad syntax in EPRT");
- return;
- }
- *end = '\0';
- ret = inet_pton (data_dest->sa_family, str,
- socket_get_address (data_dest));
-
- if (ret != 1) {
- reply(500, "Bad address syntax in EPRT");
- return;
- }
- str = end + 1;
- port = strtol (str, &end, 0);
- if (port == 0 || *end != sep) {
- reply(500, "Bad port syntax in EPRT");
- return;
- }
- socket_set_port (data_dest, htons(port));
- reply(200, "EPRT command successful.");
-}
-
-/*
- * 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(char *local)
-{
- static char new[MaxPathLen];
- struct stat st;
- int count;
- char *cp;
-
- cp = strrchr(local, '/');
- if (cp)
- *cp = '\0';
- if (stat(cp ? local : ".", &st) < 0) {
- perror_reply(553, cp ? local : ".");
- return NULL;
- }
- if (cp)
- *cp = '/';
- for (count = 1; count < 100; count++) {
- snprintf (new, sizeof(new), "%s.%d", local, count);
- if (stat(new, &st) < 0)
- return (new);
- }
- reply(452, "Unique file name cannot be created.");
- return (NULL);
-}
-
-/*
- * Format and send reply containing system error number.
- */
-void
-perror_reply(int code, const char *string)
-{
- reply(code, "%s: %s.", string, strerror(errno));
-}
-
-static char *onefile[] = {
- "",
- 0
-};
-
-void
-list_file(char *file)
-{
- if(use_builtin_ls) {
- FILE *dout;
- dout = dataconn(file, -1, "w");
- if (dout == NULL)
- return;
- set_buffer_size(fileno(dout), 0);
- builtin_ls(dout, file);
- reply(226, "Transfer complete.");
- fclose(dout);
- data = -1;
- pdata = -1;
- } else {
-#ifdef HAVE_LS_A
- const char *cmd = "/bin/ls -lA -- %s";
-#else
- const char *cmd = "/bin/ls -la -- %s";
-#endif
- retrieve(cmd, file);
- }
-}
-
-void
-send_file_list(char *whichf)
-{
- struct stat st;
- DIR *dirp = NULL;
- struct dirent *dir;
- FILE *dout = NULL;
- char **dirlist, *dirname;
- int simple = 0;
- int freeglob = 0;
- glob_t gl;
- char buf[MaxPathLen];
-
- if (strpbrk(whichf, "~{[*?") != NULL) {
- int flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_QUOTE|GLOB_TILDE;
-
- memset(&gl, 0, sizeof(gl));
- freeglob = 1;
- if (glob(whichf, flags, 0, &gl)) {
- reply(550, "not found");
- goto out;
- } else if (gl.gl_pathc == 0) {
- errno = ENOENT;
- perror_reply(550, whichf);
- goto out;
- }
- dirlist = gl.gl_pathv;
- } else {
- onefile[0] = whichf;
- dirlist = onefile;
- simple = 1;
- }
-
- if (setjmp(urgcatch)) {
- transflag = 0;
- goto out;
- }
- 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) {
- list_file(dirname);
- goto out;
- }
- perror_reply(550, whichf);
- if (dout != NULL) {
- fclose(dout);
- transflag = 0;
- data = -1;
- pdata = -1;
- }
- goto out;
- }
-
- if (S_ISREG(st.st_mode)) {
- if (dout == NULL) {
- dout = dataconn("file list", (off_t)-1, "w");
- if (dout == NULL)
- goto out;
- transflag++;
- }
- snprintf(buf, sizeof(buf), "%s%s\n", dirname,
- type == TYPE_A ? "\r" : "");
- sec_write(fileno(dout), buf, strlen(buf));
- byte_count += strlen(dirname) + 1;
- continue;
- } else if (!S_ISDIR(st.st_mode))
- continue;
-
- if ((dirp = opendir(dirname)) == NULL)
- continue;
-
- while ((dir = readdir(dirp)) != NULL) {
- char nbuf[MaxPathLen];
-
- if (!strcmp(dir->d_name, "."))
- continue;
- if (!strcmp(dir->d_name, ".."))
- 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 &&
- S_ISREG(st.st_mode))) {
- if (dout == NULL) {
- dout = dataconn("file list", (off_t)-1, "w");
- if (dout == NULL)
- goto out;
- transflag++;
- }
- if(strncmp(nbuf, "./", 2) == 0)
- snprintf(buf, sizeof(buf), "%s%s\n", nbuf +2,
- type == TYPE_A ? "\r" : "");
- else
- snprintf(buf, sizeof(buf), "%s%s\n", nbuf,
- type == TYPE_A ? "\r" : "");
- sec_write(fileno(dout), buf, strlen(buf));
- 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){
- sec_write(fileno(dout), buf, 0); /* XXX flush */
-
- fclose(dout);
- }
- data = -1;
- pdata = -1;
-out:
- if (freeglob) {
- freeglob = 0;
- globfree(&gl);
- }
-}
-
-
-int
-find(char *pattern)
-{
- char line[1024];
- FILE *f;
-
- snprintf(line, sizeof(line),
- "/bin/locate -d %s -- %s",
- ftp_rooted("/etc/locatedb"),
- pattern);
- f = ftpd_popen(line, "r", 1, 1);
- if(f == NULL){
- perror_reply(550, "/bin/locate");
- return 1;
- }
- lreply(200, "Output from find.");
- while(fgets(line, sizeof(line), f)){
- if(line[strlen(line)-1] == '\n')
- line[strlen(line)-1] = 0;
- nreply("%s", line);
- }
- reply(200, "Done");
- ftpd_pclose(f);
- return 0;
-}
-
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