ftpcmd.y revision 110037
11592Srgrimes/* 21592Srgrimes * Copyright (c) 1985, 1988, 1993, 1994 31592Srgrimes * The Regents of the University of California. All rights reserved. 41592Srgrimes * 51592Srgrimes * Redistribution and use in source and binary forms, with or without 61592Srgrimes * modification, are permitted provided that the following conditions 71592Srgrimes * are met: 81592Srgrimes * 1. Redistributions of source code must retain the above copyright 91592Srgrimes * notice, this list of conditions and the following disclaimer. 101592Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111592Srgrimes * notice, this list of conditions and the following disclaimer in the 121592Srgrimes * documentation and/or other materials provided with the distribution. 131592Srgrimes * 3. All advertising materials mentioning features or use of this software 141592Srgrimes * must display the following acknowledgement: 151592Srgrimes * This product includes software developed by the University of 161592Srgrimes * California, Berkeley and its contributors. 171592Srgrimes * 4. Neither the name of the University nor the names of its contributors 181592Srgrimes * may be used to endorse or promote products derived from this software 191592Srgrimes * without specific prior written permission. 201592Srgrimes * 211592Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221592Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231592Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241592Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251592Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261592Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271592Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281592Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291592Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301592Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311592Srgrimes * SUCH DAMAGE. 321592Srgrimes * 331592Srgrimes * @(#)ftpcmd.y 8.3 (Berkeley) 4/6/94 341592Srgrimes */ 351592Srgrimes 361592Srgrimes/* 371592Srgrimes * Grammar for FTP commands. 381592Srgrimes * See RFC 959. 391592Srgrimes */ 401592Srgrimes 411592Srgrimes%{ 421592Srgrimes 431592Srgrimes#ifndef lint 4431329Scharnier#if 0 451592Srgrimesstatic char sccsid[] = "@(#)ftpcmd.y 8.3 (Berkeley) 4/6/94"; 4631329Scharnier#endif 4731329Scharnierstatic const char rcsid[] = 4850476Speter "$FreeBSD: head/libexec/ftpd/ftpcmd.y 110037 2003-01-29 10:58:58Z yar $"; 491592Srgrimes#endif /* not lint */ 501592Srgrimes 511592Srgrimes#include <sys/param.h> 521592Srgrimes#include <sys/socket.h> 531592Srgrimes#include <sys/stat.h> 541592Srgrimes 551592Srgrimes#include <netinet/in.h> 561592Srgrimes#include <arpa/ftp.h> 571592Srgrimes 581592Srgrimes#include <ctype.h> 591592Srgrimes#include <errno.h> 601592Srgrimes#include <glob.h> 6192090Smaxim#include <libutil.h> 6292272Smaxim#include <limits.h> 6392090Smaxim#include <md5.h> 6456668Sshin#include <netdb.h> 651592Srgrimes#include <pwd.h> 661592Srgrimes#include <signal.h> 671592Srgrimes#include <stdio.h> 681592Srgrimes#include <stdlib.h> 691592Srgrimes#include <string.h> 701592Srgrimes#include <syslog.h> 711592Srgrimes#include <time.h> 721592Srgrimes#include <unistd.h> 731592Srgrimes 741592Srgrimes#include "extern.h" 75109380Syar#include "pathnames.h" 761592Srgrimes 7756668Sshinextern union sockunion data_dest, his_addr; 78110037Syarextern int hostinfo; 791592Srgrimesextern int logged_in; 801592Srgrimesextern struct passwd *pw; 811592Srgrimesextern int guest; 82110036Syarextern char *homedir; 8317435Spstextern int paranoid; 841592Srgrimesextern int logging; 851592Srgrimesextern int type; 861592Srgrimesextern int form; 8776096Smarkmextern int ftpdebug; 881592Srgrimesextern int timeout; 891592Srgrimesextern int maxtimeout; 901592Srgrimesextern int pdata; 9127650Sdavidnextern char *hostname; 9227650Sdavidnextern char remotehost[]; 931592Srgrimesextern char proctitle[]; 941592Srgrimesextern int usedefault; 951592Srgrimesextern int transflag; 961592Srgrimesextern char tmpline[]; 9770102Sphkextern int readonly; 9870102Sphkextern int noepsv; 9982460Snikextern int noretr; 10082796Ssheldonhextern int noguestretr; 101100684Syarextern char *typenames[]; /* defined in <arpa/ftp.h> included from ftpd.c */ 1021592Srgrimes 1031592Srgrimesoff_t restart_point; 1041592Srgrimes 1051592Srgrimesstatic int cmd_type; 1061592Srgrimesstatic int cmd_form; 1071592Srgrimesstatic int cmd_bytesz; 10889935Syarstatic int state; 1091592Srgrimeschar cbuf[512]; 11088935Sdwmalonechar *fromname = (char *) 0; 1111592Srgrimes 11256668Sshinextern int epsvall; 11356668Sshin 1141592Srgrimes%} 1151592Srgrimes 1161592Srgrimes%union { 11792272Smaxim struct { 11892272Smaxim off_t o; 11992272Smaxim int i; 12092272Smaxim } u; 1211592Srgrimes char *s; 1221592Srgrimes} 1231592Srgrimes 1241592Srgrimes%token 1251592Srgrimes A B C E F I 1261592Srgrimes L N P R S T 12756668Sshin ALL 1281592Srgrimes 1291592Srgrimes SP CRLF COMMA 1301592Srgrimes 1311592Srgrimes USER PASS ACCT REIN QUIT PORT 1321592Srgrimes PASV TYPE STRU MODE RETR STOR 1331592Srgrimes APPE MLFL MAIL MSND MSOM MSAM 1341592Srgrimes MRSQ MRCP ALLO REST RNFR RNTO 1351592Srgrimes ABOR DELE CWD LIST NLST SITE 1361592Srgrimes STAT HELP NOOP MKD RMD PWD 1371592Srgrimes CDUP STOU SMNT SYST SIZE MDTM 13856668Sshin LPRT LPSV EPRT EPSV 1391592Srgrimes 14075535Sphk UMASK IDLE CHMOD MDFIVE 1411592Srgrimes 142102565Syar LEXERR NOTIMPL 1431592Srgrimes 1441592Srgrimes%token <s> STRING 14592272Smaxim%token <u> NUMBER 1461592Srgrimes 14792272Smaxim%type <u.i> check_login octal_number byte_size 14892272Smaxim%type <u.i> check_login_ro check_login_epsv 14992272Smaxim%type <u.i> struct_code mode_code type_code form_code 15075567Speter%type <s> pathstring pathname password username 151102565Syar%type <s> ALL NOTIMPL 1521592Srgrimes 1531592Srgrimes%start cmd_list 1541592Srgrimes 1551592Srgrimes%% 1561592Srgrimes 1571592Srgrimescmd_list 1581592Srgrimes : /* empty */ 1591592Srgrimes | cmd_list cmd 1601592Srgrimes { 16188935Sdwmalone if (fromname) 16288935Sdwmalone free(fromname); 1631592Srgrimes fromname = (char *) 0; 1641592Srgrimes restart_point = (off_t) 0; 1651592Srgrimes } 1661592Srgrimes | cmd_list rcmd 1671592Srgrimes ; 1681592Srgrimes 1691592Srgrimescmd 1701592Srgrimes : USER SP username CRLF 1711592Srgrimes { 1721592Srgrimes user($3); 1731592Srgrimes free($3); 1741592Srgrimes } 1751592Srgrimes | PASS SP password CRLF 1761592Srgrimes { 1771592Srgrimes pass($3); 1781592Srgrimes free($3); 1791592Srgrimes } 18075556Sgreen | PASS CRLF 18175556Sgreen { 18275556Sgreen pass(""); 18375556Sgreen } 18417433Spst | PORT check_login SP host_port CRLF 1851592Srgrimes { 18656668Sshin if (epsvall) { 18756668Sshin reply(501, "no PORT allowed after EPSV ALL"); 18856668Sshin goto port_done; 18956668Sshin } 19056668Sshin if (!$2) 19156668Sshin goto port_done; 19256668Sshin if (port_check("PORT") == 1) 19356668Sshin goto port_done; 19456668Sshin#ifdef INET6 19556668Sshin if ((his_addr.su_family != AF_INET6 || 19656668Sshin !IN6_IS_ADDR_V4MAPPED(&his_addr.su_sin6.sin6_addr))) { 19756668Sshin /* shoud never happen */ 19856668Sshin usedefault = 1; 19956668Sshin reply(500, "Invalid address rejected."); 20056668Sshin goto port_done; 20156668Sshin } 20256668Sshin port_check_v6("pcmd"); 20356668Sshin#endif 20456668Sshin port_done: 20556668Sshin } 20656668Sshin | LPRT check_login SP host_long_port CRLF 20756668Sshin { 20856668Sshin if (epsvall) { 20956668Sshin reply(501, "no LPRT allowed after EPSV ALL"); 21056668Sshin goto lprt_done; 21156668Sshin } 21256668Sshin if (!$2) 21356668Sshin goto lprt_done; 21456668Sshin if (port_check("LPRT") == 1) 21556668Sshin goto lprt_done; 21656668Sshin#ifdef INET6 21756668Sshin if (his_addr.su_family != AF_INET6) { 21856668Sshin usedefault = 1; 21956668Sshin reply(500, "Invalid address rejected."); 22056668Sshin goto lprt_done; 22156668Sshin } 22256668Sshin if (port_check_v6("LPRT") == 1) 22356668Sshin goto lprt_done; 22456668Sshin#endif 22556668Sshin lprt_done: 22656668Sshin } 22756668Sshin | EPRT check_login SP STRING CRLF 22856668Sshin { 22956668Sshin char delim; 23056668Sshin char *tmp = NULL; 23156668Sshin char *p, *q; 23256668Sshin char *result[3]; 23356668Sshin struct addrinfo hints; 23456668Sshin struct addrinfo *res; 23556668Sshin int i; 23656668Sshin 23756668Sshin if (epsvall) { 23856668Sshin reply(501, "no EPRT allowed after EPSV ALL"); 23956668Sshin goto eprt_done; 24056668Sshin } 24156668Sshin if (!$2) 24256668Sshin goto eprt_done; 24356668Sshin 24456668Sshin memset(&data_dest, 0, sizeof(data_dest)); 24556668Sshin tmp = strdup($4); 24676096Smarkm if (ftpdebug) 24756668Sshin syslog(LOG_DEBUG, "%s", tmp); 24856668Sshin if (!tmp) { 24976096Smarkm fatalerror("not enough core"); 25056668Sshin /*NOTREACHED*/ 25156668Sshin } 25256668Sshin p = tmp; 25356668Sshin delim = p[0]; 25456668Sshin p++; 25556668Sshin memset(result, 0, sizeof(result)); 25656668Sshin for (i = 0; i < 3; i++) { 25756668Sshin q = strchr(p, delim); 25856668Sshin if (!q || *q != delim) { 25956668Sshin parsefail: 26056668Sshin reply(500, 26156668Sshin "Invalid argument, rejected."); 26256668Sshin if (tmp) 26356668Sshin free(tmp); 26417433Spst usedefault = 1; 26556668Sshin goto eprt_done; 26617433Spst } 26756668Sshin *q++ = '\0'; 26856668Sshin result[i] = p; 26976096Smarkm if (ftpdebug) 27056668Sshin syslog(LOG_DEBUG, "%d: %s", i, p); 27156668Sshin p = q; 2721592Srgrimes } 27356668Sshin 27456668Sshin /* some more sanity check */ 27556668Sshin p = result[0]; 27656668Sshin while (*p) { 27756668Sshin if (!isdigit(*p)) 27856668Sshin goto parsefail; 27956668Sshin p++; 28056668Sshin } 28156668Sshin p = result[2]; 28256668Sshin while (*p) { 28356668Sshin if (!isdigit(*p)) 28456668Sshin goto parsefail; 28556668Sshin p++; 28656668Sshin } 28756668Sshin 28856668Sshin /* grab address */ 28956668Sshin memset(&hints, 0, sizeof(hints)); 29056668Sshin if (atoi(result[0]) == 1) 29156668Sshin hints.ai_family = PF_INET; 29256668Sshin#ifdef INET6 29356668Sshin else if (atoi(result[0]) == 2) 29456668Sshin hints.ai_family = PF_INET6; 29556668Sshin#endif 29656668Sshin else 29756668Sshin hints.ai_family = PF_UNSPEC; /*XXX*/ 29856668Sshin hints.ai_socktype = SOCK_STREAM; 29956668Sshin i = getaddrinfo(result[1], result[2], &hints, &res); 30056668Sshin if (i) 30156668Sshin goto parsefail; 30256668Sshin memcpy(&data_dest, res->ai_addr, res->ai_addrlen); 30356668Sshin#ifdef INET6 30456668Sshin if (his_addr.su_family == AF_INET6 30556668Sshin && data_dest.su_family == AF_INET6) { 30656668Sshin /* XXX more sanity checks! */ 30756668Sshin data_dest.su_sin6.sin6_scope_id = 30856668Sshin his_addr.su_sin6.sin6_scope_id; 30956668Sshin } 31056668Sshin#endif 31156668Sshin free(tmp); 31256668Sshin tmp = NULL; 31356668Sshin 31456668Sshin if (port_check("EPRT") == 1) 31556668Sshin goto eprt_done; 31656668Sshin#ifdef INET6 31756668Sshin if (his_addr.su_family != AF_INET6) { 31856668Sshin usedefault = 1; 31956668Sshin reply(500, "Invalid address rejected."); 32056668Sshin goto eprt_done; 32156668Sshin } 32256668Sshin if (port_check_v6("EPRT") == 1) 32356668Sshin goto eprt_done; 32456668Sshin#endif 32588935Sdwmalone eprt_done: 32688935Sdwmalone free($4); 3271592Srgrimes } 32817433Spst | PASV check_login CRLF 3291592Srgrimes { 33056668Sshin if (epsvall) 33156668Sshin reply(501, "no PASV allowed after EPSV ALL"); 33256668Sshin else if ($2) 33317433Spst passive(); 3341592Srgrimes } 33556668Sshin | LPSV check_login CRLF 33656668Sshin { 33756668Sshin if (epsvall) 33856668Sshin reply(501, "no LPSV allowed after EPSV ALL"); 33956668Sshin else if ($2) 34056668Sshin long_passive("LPSV", PF_UNSPEC); 34156668Sshin } 34270102Sphk | EPSV check_login_epsv SP NUMBER CRLF 34356668Sshin { 34456668Sshin if ($2) { 34556668Sshin int pf; 34692272Smaxim switch ($4.i) { 34756668Sshin case 1: 34856668Sshin pf = PF_INET; 34956668Sshin break; 35056668Sshin#ifdef INET6 35156668Sshin case 2: 35256668Sshin pf = PF_INET6; 35356668Sshin break; 35456668Sshin#endif 35556668Sshin default: 35656668Sshin pf = -1; /*junk value*/ 35756668Sshin break; 35856668Sshin } 35956668Sshin long_passive("EPSV", pf); 36056668Sshin } 36156668Sshin } 36270102Sphk | EPSV check_login_epsv SP ALL CRLF 36356668Sshin { 36456668Sshin if ($2) { 36556668Sshin reply(200, 36656668Sshin "EPSV ALL command successful."); 36756668Sshin epsvall++; 36856668Sshin } 36956668Sshin } 37070102Sphk | EPSV check_login_epsv CRLF 37156668Sshin { 37256668Sshin if ($2) 37356668Sshin long_passive("EPSV", PF_UNSPEC); 37456668Sshin } 37571278Sjedgar | TYPE check_login SP type_code CRLF 3761592Srgrimes { 37771278Sjedgar if ($2) { 37871278Sjedgar switch (cmd_type) { 3791592Srgrimes 38071278Sjedgar case TYPE_A: 38171278Sjedgar if (cmd_form == FORM_N) { 38271278Sjedgar reply(200, "Type set to A."); 38371278Sjedgar type = cmd_type; 38471278Sjedgar form = cmd_form; 38571278Sjedgar } else 38671278Sjedgar reply(504, "Form must be N."); 38771278Sjedgar break; 3881592Srgrimes 38971278Sjedgar case TYPE_E: 39071278Sjedgar reply(504, "Type E not implemented."); 39171278Sjedgar break; 3921592Srgrimes 39371278Sjedgar case TYPE_I: 39471278Sjedgar reply(200, "Type set to I."); 39571278Sjedgar type = cmd_type; 39671278Sjedgar break; 3971592Srgrimes 39871278Sjedgar case TYPE_L: 399103949Smike#if CHAR_BIT == 8 40071278Sjedgar if (cmd_bytesz == 8) { 40171278Sjedgar reply(200, 40271278Sjedgar "Type set to L (byte size 8)."); 40371278Sjedgar type = cmd_type; 40471278Sjedgar } else 40571278Sjedgar reply(504, "Byte size must be 8."); 406103949Smike#else /* CHAR_BIT == 8 */ 407103949Smike UNIMPLEMENTED for CHAR_BIT != 8 408103949Smike#endif /* CHAR_BIT == 8 */ 40971278Sjedgar } 4101592Srgrimes } 4111592Srgrimes } 41271278Sjedgar | STRU check_login SP struct_code CRLF 4131592Srgrimes { 41471278Sjedgar if ($2) { 41571278Sjedgar switch ($4) { 4161592Srgrimes 41771278Sjedgar case STRU_F: 41871278Sjedgar reply(200, "STRU F ok."); 41971278Sjedgar break; 4201592Srgrimes 42171278Sjedgar default: 42271278Sjedgar reply(504, "Unimplemented STRU type."); 42371278Sjedgar } 4241592Srgrimes } 4251592Srgrimes } 42671278Sjedgar | MODE check_login SP mode_code CRLF 4271592Srgrimes { 42871278Sjedgar if ($2) { 42971278Sjedgar switch ($4) { 4301592Srgrimes 43171278Sjedgar case MODE_S: 43271278Sjedgar reply(200, "MODE S ok."); 43371278Sjedgar break; 43471278Sjedgar 43571278Sjedgar default: 43671278Sjedgar reply(502, "Unimplemented MODE type."); 43771278Sjedgar } 4381592Srgrimes } 4391592Srgrimes } 44071278Sjedgar | ALLO check_login SP NUMBER CRLF 4411592Srgrimes { 44271278Sjedgar if ($2) { 44371278Sjedgar reply(202, "ALLO command ignored."); 44471278Sjedgar } 4451592Srgrimes } 44671278Sjedgar | ALLO check_login SP NUMBER SP R SP NUMBER CRLF 4471592Srgrimes { 44871278Sjedgar if ($2) { 44971278Sjedgar reply(202, "ALLO command ignored."); 45071278Sjedgar } 4511592Srgrimes } 4521592Srgrimes | RETR check_login SP pathname CRLF 4531592Srgrimes { 45482796Ssheldonh if (noretr || (guest && noguestretr)) 45582460Snik reply(500, "RETR command is disabled"); 45682460Snik else if ($2 && $4 != NULL) 4571592Srgrimes retrieve((char *) 0, $4); 45882460Snik 4591592Srgrimes if ($4 != NULL) 4601592Srgrimes free($4); 4611592Srgrimes } 46270102Sphk | STOR check_login_ro SP pathname CRLF 4631592Srgrimes { 4641592Srgrimes if ($2 && $4 != NULL) 4651592Srgrimes store($4, "w", 0); 4661592Srgrimes if ($4 != NULL) 4671592Srgrimes free($4); 4681592Srgrimes } 46970102Sphk | APPE check_login_ro SP pathname CRLF 4701592Srgrimes { 4711592Srgrimes if ($2 && $4 != NULL) 4721592Srgrimes store($4, "a", 0); 4731592Srgrimes if ($4 != NULL) 4741592Srgrimes free($4); 4751592Srgrimes } 4761592Srgrimes | NLST check_login CRLF 4771592Srgrimes { 4781592Srgrimes if ($2) 4791592Srgrimes send_file_list("."); 4801592Srgrimes } 481101395Syar | NLST check_login SP pathstring CRLF 4821592Srgrimes { 483101395Syar if ($2) 4841592Srgrimes send_file_list($4); 485101395Syar free($4); 4861592Srgrimes } 4871592Srgrimes | LIST check_login CRLF 4881592Srgrimes { 4891592Srgrimes if ($2) 490109380Syar retrieve(_PATH_LS " -lgA", ""); 4911592Srgrimes } 49275567Speter | LIST check_login SP pathstring CRLF 4931592Srgrimes { 494101395Syar if ($2) 495109380Syar retrieve(_PATH_LS " -lgA %s", $4); 496101395Syar free($4); 4971592Srgrimes } 4981592Srgrimes | STAT check_login SP pathname CRLF 4991592Srgrimes { 5001592Srgrimes if ($2 && $4 != NULL) 5011592Srgrimes statfilecmd($4); 5021592Srgrimes if ($4 != NULL) 5031592Srgrimes free($4); 5041592Srgrimes } 50571278Sjedgar | STAT check_login CRLF 5061592Srgrimes { 50771278Sjedgar if ($2) { 50871278Sjedgar statcmd(); 50971278Sjedgar } 5101592Srgrimes } 51170102Sphk | DELE check_login_ro SP pathname CRLF 5121592Srgrimes { 5131592Srgrimes if ($2 && $4 != NULL) 5141592Srgrimes delete($4); 5151592Srgrimes if ($4 != NULL) 5161592Srgrimes free($4); 5171592Srgrimes } 51870102Sphk | RNTO check_login_ro SP pathname CRLF 5191592Srgrimes { 520101379Syar if ($2 && $4 != NULL) { 52117433Spst if (fromname) { 52217433Spst renamecmd(fromname, $4); 52317433Spst free(fromname); 52417433Spst fromname = (char *) 0; 52517433Spst } else { 52617433Spst reply(503, "Bad sequence of commands."); 52717433Spst } 5281592Srgrimes } 529101379Syar if ($4 != NULL) 530101379Syar free($4); 5311592Srgrimes } 53271278Sjedgar | ABOR check_login CRLF 5331592Srgrimes { 53471278Sjedgar if ($2) 53571278Sjedgar reply(225, "ABOR command successful."); 5361592Srgrimes } 5371592Srgrimes | CWD check_login CRLF 5381592Srgrimes { 53969234Sdanny if ($2) { 540110036Syar cwd(homedir); 54169234Sdanny } 5421592Srgrimes } 5431592Srgrimes | CWD check_login SP pathname CRLF 5441592Srgrimes { 5451592Srgrimes if ($2 && $4 != NULL) 5461592Srgrimes cwd($4); 5471592Srgrimes if ($4 != NULL) 5481592Srgrimes free($4); 5491592Srgrimes } 5501592Srgrimes | HELP CRLF 5511592Srgrimes { 5521592Srgrimes help(cmdtab, (char *) 0); 5531592Srgrimes } 5541592Srgrimes | HELP SP STRING CRLF 5551592Srgrimes { 5561592Srgrimes char *cp = $3; 5571592Srgrimes 5581592Srgrimes if (strncasecmp(cp, "SITE", 4) == 0) { 5591592Srgrimes cp = $3 + 4; 5601592Srgrimes if (*cp == ' ') 5611592Srgrimes cp++; 5621592Srgrimes if (*cp) 5631592Srgrimes help(sitetab, cp); 5641592Srgrimes else 5651592Srgrimes help(sitetab, (char *) 0); 5661592Srgrimes } else 5671592Srgrimes help(cmdtab, $3); 56888935Sdwmalone free($3); 5691592Srgrimes } 5701592Srgrimes | NOOP CRLF 5711592Srgrimes { 5721592Srgrimes reply(200, "NOOP command successful."); 5731592Srgrimes } 57470102Sphk | MKD check_login_ro SP pathname CRLF 5751592Srgrimes { 5761592Srgrimes if ($2 && $4 != NULL) 5771592Srgrimes makedir($4); 5781592Srgrimes if ($4 != NULL) 5791592Srgrimes free($4); 5801592Srgrimes } 58170102Sphk | RMD check_login_ro SP pathname CRLF 5821592Srgrimes { 5831592Srgrimes if ($2 && $4 != NULL) 5841592Srgrimes removedir($4); 5851592Srgrimes if ($4 != NULL) 5861592Srgrimes free($4); 5871592Srgrimes } 5881592Srgrimes | PWD check_login CRLF 5891592Srgrimes { 5901592Srgrimes if ($2) 5911592Srgrimes pwd(); 5921592Srgrimes } 5931592Srgrimes | CDUP check_login CRLF 5941592Srgrimes { 5951592Srgrimes if ($2) 5961592Srgrimes cwd(".."); 5971592Srgrimes } 5981592Srgrimes | SITE SP HELP CRLF 5991592Srgrimes { 6001592Srgrimes help(sitetab, (char *) 0); 6011592Srgrimes } 6021592Srgrimes | SITE SP HELP SP STRING CRLF 6031592Srgrimes { 6041592Srgrimes help(sitetab, $5); 60588935Sdwmalone free($5); 6061592Srgrimes } 60775535Sphk | SITE SP MDFIVE check_login SP pathname CRLF 60875535Sphk { 60975535Sphk char p[64], *q; 61075535Sphk 611101379Syar if ($4 && $6) { 61275535Sphk q = MD5File($6, p); 61375535Sphk if (q != NULL) 61475535Sphk reply(200, "MD5(%s) = %s", $6, p); 61575535Sphk else 61675535Sphk perror_reply(550, $6); 61775535Sphk } 61888935Sdwmalone if ($6) 61988935Sdwmalone free($6); 62075535Sphk } 6211592Srgrimes | SITE SP UMASK check_login CRLF 6221592Srgrimes { 6231592Srgrimes int oldmask; 6241592Srgrimes 6251592Srgrimes if ($4) { 6261592Srgrimes oldmask = umask(0); 6271592Srgrimes (void) umask(oldmask); 6281592Srgrimes reply(200, "Current UMASK is %03o", oldmask); 6291592Srgrimes } 6301592Srgrimes } 6311592Srgrimes | SITE SP UMASK check_login SP octal_number CRLF 6321592Srgrimes { 6331592Srgrimes int oldmask; 6341592Srgrimes 6351592Srgrimes if ($4) { 6361592Srgrimes if (($6 == -1) || ($6 > 0777)) { 6371592Srgrimes reply(501, "Bad UMASK value"); 6381592Srgrimes } else { 6391592Srgrimes oldmask = umask($6); 6401592Srgrimes reply(200, 6411592Srgrimes "UMASK set to %03o (was %03o)", 6421592Srgrimes $6, oldmask); 6431592Srgrimes } 6441592Srgrimes } 6451592Srgrimes } 64670102Sphk | SITE SP CHMOD check_login_ro SP octal_number SP pathname CRLF 6471592Srgrimes { 6481592Srgrimes if ($4 && ($8 != NULL)) { 649101378Syar if (($6 == -1 ) || ($6 > 0777)) 650101378Syar reply(501, "Bad mode value"); 6511592Srgrimes else if (chmod($8, $6) < 0) 6521592Srgrimes perror_reply(550, $8); 6531592Srgrimes else 6541592Srgrimes reply(200, "CHMOD command successful."); 6551592Srgrimes } 6561592Srgrimes if ($8 != NULL) 6571592Srgrimes free($8); 6581592Srgrimes } 65971278Sjedgar | SITE SP check_login IDLE CRLF 6601592Srgrimes { 66171278Sjedgar if ($3) 66271278Sjedgar reply(200, 66371278Sjedgar "Current IDLE time limit is %d seconds; max %d", 66471278Sjedgar timeout, maxtimeout); 6651592Srgrimes } 66671278Sjedgar | SITE SP check_login IDLE SP NUMBER CRLF 6671592Srgrimes { 66871278Sjedgar if ($3) { 66992272Smaxim if ($6.i < 30 || $6.i > maxtimeout) { 67071278Sjedgar reply(501, 67171278Sjedgar "Maximum IDLE time must be between 30 and %d seconds", 67271278Sjedgar maxtimeout); 67371278Sjedgar } else { 67492272Smaxim timeout = $6.i; 67571278Sjedgar (void) alarm((unsigned) timeout); 67671278Sjedgar reply(200, 67771278Sjedgar "Maximum IDLE time set to %d seconds", 67871278Sjedgar timeout); 67971278Sjedgar } 6801592Srgrimes } 6811592Srgrimes } 68270102Sphk | STOU check_login_ro SP pathname CRLF 6831592Srgrimes { 6841592Srgrimes if ($2 && $4 != NULL) 6851592Srgrimes store($4, "w", 1); 6861592Srgrimes if ($4 != NULL) 6871592Srgrimes free($4); 6881592Srgrimes } 68971278Sjedgar | SYST check_login CRLF 6901592Srgrimes { 69171278Sjedgar if ($2) 6921592Srgrimes#ifdef unix 6931592Srgrimes#ifdef BSD 6941592Srgrimes reply(215, "UNIX Type: L%d Version: BSD-%d", 695103949Smike CHAR_BIT, BSD); 6961592Srgrimes#else /* BSD */ 697103949Smike reply(215, "UNIX Type: L%d", CHAR_BIT); 6981592Srgrimes#endif /* BSD */ 6991592Srgrimes#else /* unix */ 700103949Smike reply(215, "UNKNOWN Type: L%d", CHAR_BIT); 7011592Srgrimes#endif /* unix */ 7021592Srgrimes } 7031592Srgrimes 7041592Srgrimes /* 7051592Srgrimes * SIZE is not in RFC959, but Postel has blessed it and 7061592Srgrimes * it will be in the updated RFC. 7071592Srgrimes * 7081592Srgrimes * Return size of file in a format suitable for 7091592Srgrimes * using with RESTART (we just count bytes). 7101592Srgrimes */ 7111592Srgrimes | SIZE check_login SP pathname CRLF 7121592Srgrimes { 7131592Srgrimes if ($2 && $4 != NULL) 7141592Srgrimes sizecmd($4); 7151592Srgrimes if ($4 != NULL) 7161592Srgrimes free($4); 7171592Srgrimes } 7181592Srgrimes 7191592Srgrimes /* 7201592Srgrimes * MDTM is not in RFC959, but Postel has blessed it and 7211592Srgrimes * it will be in the updated RFC. 7221592Srgrimes * 7231592Srgrimes * Return modification time of file as an ISO 3307 7241592Srgrimes * style time. E.g. YYYYMMDDHHMMSS or YYYYMMDDHHMMSS.xxx 7251592Srgrimes * where xxx is the fractional second (of any precision, 7261592Srgrimes * not necessarily 3 digits) 7271592Srgrimes */ 7281592Srgrimes | MDTM check_login SP pathname CRLF 7291592Srgrimes { 7301592Srgrimes if ($2 && $4 != NULL) { 7311592Srgrimes struct stat stbuf; 7321592Srgrimes if (stat($4, &stbuf) < 0) 7331592Srgrimes reply(550, "%s: %s", 7341592Srgrimes $4, strerror(errno)); 7351592Srgrimes else if (!S_ISREG(stbuf.st_mode)) { 7361592Srgrimes reply(550, "%s: not a plain file.", $4); 7371592Srgrimes } else { 7381592Srgrimes struct tm *t; 7391592Srgrimes t = gmtime(&stbuf.st_mtime); 7401592Srgrimes reply(213, 74117435Spst "%04d%02d%02d%02d%02d%02d", 74217435Spst 1900 + t->tm_year, 74317435Spst t->tm_mon+1, t->tm_mday, 7441592Srgrimes t->tm_hour, t->tm_min, t->tm_sec); 7451592Srgrimes } 7461592Srgrimes } 7471592Srgrimes if ($4 != NULL) 7481592Srgrimes free($4); 7491592Srgrimes } 7501592Srgrimes | QUIT CRLF 7511592Srgrimes { 7521592Srgrimes reply(221, "Goodbye."); 7531592Srgrimes dologout(0); 7541592Srgrimes } 755102565Syar | NOTIMPL 756102565Syar { 757102565Syar nack($1); 758102565Syar } 75989935Syar | error 7601592Srgrimes { 76189935Syar yyclearin; /* discard lookahead data */ 76289935Syar yyerrok; /* clear error condition */ 763102565Syar state = CMD; /* reset lexer state */ 7641592Srgrimes } 7651592Srgrimes ; 7661592Srgrimesrcmd 76770102Sphk : RNFR check_login_ro SP pathname CRLF 7681592Srgrimes { 7691592Srgrimes restart_point = (off_t) 0; 7701592Srgrimes if ($2 && $4) { 77188935Sdwmalone if (fromname) 77288935Sdwmalone free(fromname); 77388935Sdwmalone fromname = (char *) 0; 77488935Sdwmalone if (renamefrom($4)) 77588935Sdwmalone fromname = $4; 77688935Sdwmalone else 7771592Srgrimes free($4); 77888935Sdwmalone } else if ($4) { 77988935Sdwmalone free($4); 7801592Srgrimes } 7811592Srgrimes } 78292272Smaxim | REST check_login SP NUMBER CRLF 7831592Srgrimes { 78471278Sjedgar if ($2) { 78588935Sdwmalone if (fromname) 78688935Sdwmalone free(fromname); 78771278Sjedgar fromname = (char *) 0; 78892272Smaxim restart_point = $4.o; 78992272Smaxim reply(350, "Restarting at %llu. %s", 79071278Sjedgar restart_point, 79171278Sjedgar "Send STORE or RETRIEVE to initiate transfer."); 79271278Sjedgar } 7931592Srgrimes } 7941592Srgrimes ; 7951592Srgrimes 7961592Srgrimesusername 7971592Srgrimes : STRING 7981592Srgrimes ; 7991592Srgrimes 8001592Srgrimespassword 8011592Srgrimes : /* empty */ 8021592Srgrimes { 8031592Srgrimes $$ = (char *)calloc(1, sizeof(char)); 8041592Srgrimes } 8051592Srgrimes | STRING 8061592Srgrimes ; 8071592Srgrimes 8081592Srgrimesbyte_size 8091592Srgrimes : NUMBER 81092272Smaxim { 81192272Smaxim $$ = $1.i; 81292272Smaxim } 8131592Srgrimes ; 8141592Srgrimes 8151592Srgrimeshost_port 8161592Srgrimes : NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 8171592Srgrimes NUMBER COMMA NUMBER 8181592Srgrimes { 8191592Srgrimes char *a, *p; 8201592Srgrimes 82156668Sshin data_dest.su_len = sizeof(struct sockaddr_in); 82256668Sshin data_dest.su_family = AF_INET; 82356668Sshin p = (char *)&data_dest.su_sin.sin_port; 82492272Smaxim p[0] = $9.i; p[1] = $11.i; 82556668Sshin a = (char *)&data_dest.su_sin.sin_addr; 82692272Smaxim a[0] = $1.i; a[1] = $3.i; a[2] = $5.i; a[3] = $7.i; 8271592Srgrimes } 8281592Srgrimes ; 8291592Srgrimes 83056668Sshinhost_long_port 83156668Sshin : NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 83256668Sshin NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 83356668Sshin NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 83456668Sshin NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 83556668Sshin NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 83656668Sshin NUMBER 83756668Sshin { 83856668Sshin char *a, *p; 83956668Sshin 84056668Sshin memset(&data_dest, 0, sizeof(data_dest)); 84156668Sshin data_dest.su_len = sizeof(struct sockaddr_in6); 84256668Sshin data_dest.su_family = AF_INET6; 84356668Sshin p = (char *)&data_dest.su_port; 84492272Smaxim p[0] = $39.i; p[1] = $41.i; 84556668Sshin a = (char *)&data_dest.su_sin6.sin6_addr; 84692272Smaxim a[0] = $5.i; a[1] = $7.i; a[2] = $9.i; a[3] = $11.i; 84792272Smaxim a[4] = $13.i; a[5] = $15.i; a[6] = $17.i; a[7] = $19.i; 84892272Smaxim a[8] = $21.i; a[9] = $23.i; a[10] = $25.i; a[11] = $27.i; 84992272Smaxim a[12] = $29.i; a[13] = $31.i; a[14] = $33.i; a[15] = $35.i; 85056668Sshin if (his_addr.su_family == AF_INET6) { 85156668Sshin /* XXX more sanity checks! */ 85256668Sshin data_dest.su_sin6.sin6_scope_id = 85356668Sshin his_addr.su_sin6.sin6_scope_id; 85456668Sshin } 85592272Smaxim if ($1.i != 6 || $3.i != 16 || $37.i != 2) 85656668Sshin memset(&data_dest, 0, sizeof(data_dest)); 85756668Sshin } 85856668Sshin | NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 85956668Sshin NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA 86056668Sshin NUMBER 86156668Sshin { 86256668Sshin char *a, *p; 86356668Sshin 86456668Sshin memset(&data_dest, 0, sizeof(data_dest)); 86556668Sshin data_dest.su_sin.sin_len = sizeof(struct sockaddr_in); 86656668Sshin data_dest.su_family = AF_INET; 86756668Sshin p = (char *)&data_dest.su_port; 86892272Smaxim p[0] = $15.i; p[1] = $17.i; 86956668Sshin a = (char *)&data_dest.su_sin.sin_addr; 87092272Smaxim a[0] = $5.i; a[1] = $7.i; a[2] = $9.i; a[3] = $11.i; 87192272Smaxim if ($1.i != 4 || $3.i != 4 || $13.i != 2) 87256668Sshin memset(&data_dest, 0, sizeof(data_dest)); 87356668Sshin } 87456668Sshin ; 87556668Sshin 8761592Srgrimesform_code 8771592Srgrimes : N 8781592Srgrimes { 8791592Srgrimes $$ = FORM_N; 8801592Srgrimes } 8811592Srgrimes | T 8821592Srgrimes { 8831592Srgrimes $$ = FORM_T; 8841592Srgrimes } 8851592Srgrimes | C 8861592Srgrimes { 8871592Srgrimes $$ = FORM_C; 8881592Srgrimes } 8891592Srgrimes ; 8901592Srgrimes 8911592Srgrimestype_code 8921592Srgrimes : A 8931592Srgrimes { 8941592Srgrimes cmd_type = TYPE_A; 8951592Srgrimes cmd_form = FORM_N; 8961592Srgrimes } 8971592Srgrimes | A SP form_code 8981592Srgrimes { 8991592Srgrimes cmd_type = TYPE_A; 9001592Srgrimes cmd_form = $3; 9011592Srgrimes } 9021592Srgrimes | E 9031592Srgrimes { 9041592Srgrimes cmd_type = TYPE_E; 9051592Srgrimes cmd_form = FORM_N; 9061592Srgrimes } 9071592Srgrimes | E SP form_code 9081592Srgrimes { 9091592Srgrimes cmd_type = TYPE_E; 9101592Srgrimes cmd_form = $3; 9111592Srgrimes } 9121592Srgrimes | I 9131592Srgrimes { 9141592Srgrimes cmd_type = TYPE_I; 9151592Srgrimes } 9161592Srgrimes | L 9171592Srgrimes { 9181592Srgrimes cmd_type = TYPE_L; 919103949Smike cmd_bytesz = CHAR_BIT; 9201592Srgrimes } 9211592Srgrimes | L SP byte_size 9221592Srgrimes { 9231592Srgrimes cmd_type = TYPE_L; 9241592Srgrimes cmd_bytesz = $3; 9251592Srgrimes } 9261592Srgrimes /* this is for a bug in the BBN ftp */ 9271592Srgrimes | L byte_size 9281592Srgrimes { 9291592Srgrimes cmd_type = TYPE_L; 9301592Srgrimes cmd_bytesz = $2; 9311592Srgrimes } 9321592Srgrimes ; 9331592Srgrimes 9341592Srgrimesstruct_code 9351592Srgrimes : F 9361592Srgrimes { 9371592Srgrimes $$ = STRU_F; 9381592Srgrimes } 9391592Srgrimes | R 9401592Srgrimes { 9411592Srgrimes $$ = STRU_R; 9421592Srgrimes } 9431592Srgrimes | P 9441592Srgrimes { 9451592Srgrimes $$ = STRU_P; 9461592Srgrimes } 9471592Srgrimes ; 9481592Srgrimes 9491592Srgrimesmode_code 9501592Srgrimes : S 9511592Srgrimes { 9521592Srgrimes $$ = MODE_S; 9531592Srgrimes } 9541592Srgrimes | B 9551592Srgrimes { 9561592Srgrimes $$ = MODE_B; 9571592Srgrimes } 9581592Srgrimes | C 9591592Srgrimes { 9601592Srgrimes $$ = MODE_C; 9611592Srgrimes } 9621592Srgrimes ; 9631592Srgrimes 9641592Srgrimespathname 9651592Srgrimes : pathstring 9661592Srgrimes { 9671592Srgrimes /* 9681592Srgrimes * Problem: this production is used for all pathname 9691592Srgrimes * processing, but only gives a 550 error reply. 9701592Srgrimes * This is a valid reply in some cases but not in others. 9711592Srgrimes */ 97275567Speter if (logged_in && $1) { 9731592Srgrimes glob_t gl; 974109685Syar char *p, **pp; 9751592Srgrimes int flags = 976100222Smikeh GLOB_BRACE|GLOB_NOCHECK|GLOB_TILDE; 977109685Syar int n; 9781592Srgrimes 9791592Srgrimes memset(&gl, 0, sizeof(gl)); 980109815Syar flags |= GLOB_LIMIT; 98175560Sjedgar gl.gl_matchc = MAXGLOBARGS; 9821592Srgrimes if (glob($1, flags, NULL, &gl) || 9831592Srgrimes gl.gl_pathc == 0) { 984101380Syar reply(550, "wildcard expansion error"); 9851592Srgrimes $$ = NULL; 9861592Srgrimes } else { 987109685Syar n = 0; 988109685Syar for (pp = gl.gl_pathv; *pp; pp++) 989109685Syar if (strcspn(*pp, "\r\n") == 990109685Syar strlen(*pp)) { 991109685Syar p = *pp; 992109685Syar n++; 993109685Syar } 994109685Syar if (n == 0) 995109685Syar $$ = strdup($1); 996109685Syar else if (n == 1) 997109685Syar $$ = strdup(p); 998109685Syar else { 999109685Syar reply(550, "ambiguous"); 1000109685Syar $$ = NULL; 1001109685Syar } 10021592Srgrimes } 10031592Srgrimes globfree(&gl); 10041592Srgrimes free($1); 10051592Srgrimes } else 10061592Srgrimes $$ = $1; 10071592Srgrimes } 10081592Srgrimes ; 10091592Srgrimes 10101592Srgrimespathstring 10111592Srgrimes : STRING 10121592Srgrimes ; 10131592Srgrimes 10141592Srgrimesoctal_number 10151592Srgrimes : NUMBER 10161592Srgrimes { 10171592Srgrimes int ret, dec, multby, digit; 10181592Srgrimes 10191592Srgrimes /* 10201592Srgrimes * Convert a number that was read as decimal number 10211592Srgrimes * to what it would be if it had been read as octal. 10221592Srgrimes */ 102392272Smaxim dec = $1.i; 10241592Srgrimes multby = 1; 10251592Srgrimes ret = 0; 10261592Srgrimes while (dec) { 10271592Srgrimes digit = dec%10; 10281592Srgrimes if (digit > 7) { 10291592Srgrimes ret = -1; 10301592Srgrimes break; 10311592Srgrimes } 10321592Srgrimes ret += digit * multby; 10331592Srgrimes multby *= 8; 10341592Srgrimes dec /= 10; 10351592Srgrimes } 10361592Srgrimes $$ = ret; 10371592Srgrimes } 10381592Srgrimes ; 10391592Srgrimes 10401592Srgrimes 10411592Srgrimescheck_login 10421592Srgrimes : /* empty */ 10431592Srgrimes { 104470102Sphk $$ = check_login1(); 10451592Srgrimes } 10461592Srgrimes ; 10471592Srgrimes 104870102Sphkcheck_login_epsv 104970102Sphk : /* empty */ 105070102Sphk { 105170102Sphk if (noepsv) { 105270102Sphk reply(500, "EPSV command disabled"); 105370102Sphk $$ = 0; 105470102Sphk } 105570102Sphk else 105670102Sphk $$ = check_login1(); 105770102Sphk } 105870102Sphk ; 105970102Sphk 106070102Sphkcheck_login_ro 106170102Sphk : /* empty */ 106270102Sphk { 106370102Sphk if (readonly) { 106472710Sdes reply(550, "Permission denied."); 106570102Sphk $$ = 0; 106670102Sphk } 106770102Sphk else 106870102Sphk $$ = check_login1(); 106970102Sphk } 107070102Sphk ; 107170102Sphk 10721592Srgrimes%% 10731592Srgrimes 10741592Srgrimes#define CMD 0 /* beginning of command */ 10751592Srgrimes#define ARGS 1 /* expect miscellaneous arguments */ 10761592Srgrimes#define STR1 2 /* expect SP followed by STRING */ 10771592Srgrimes#define STR2 3 /* expect STRING */ 10781592Srgrimes#define OSTR 4 /* optional SP then STRING */ 107975556Sgreen#define ZSTR1 5 /* optional SP then optional STRING */ 10801592Srgrimes#define ZSTR2 6 /* optional STRING after SP */ 10811592Srgrimes#define SITECMD 7 /* SITE command */ 10821592Srgrimes#define NSTR 8 /* Number followed by a string */ 10831592Srgrimes 108475560Sjedgar#define MAXGLOBARGS 1000 108575560Sjedgar 1086101034Syar#define MAXASIZE 10240 /* Deny ASCII SIZE on files larger than that */ 1087101034Syar 10881592Srgrimesstruct tab { 10891592Srgrimes char *name; 10901592Srgrimes short token; 10911592Srgrimes short state; 10921592Srgrimes short implemented; /* 1 if command is implemented */ 10931592Srgrimes char *help; 10941592Srgrimes}; 10951592Srgrimes 10961592Srgrimesstruct tab cmdtab[] = { /* In order defined in RFC 765 */ 10971592Srgrimes { "USER", USER, STR1, 1, "<sp> username" }, 109875556Sgreen { "PASS", PASS, ZSTR1, 1, "[<sp> [password]]" }, 10991592Srgrimes { "ACCT", ACCT, STR1, 0, "(specify account)" }, 11001592Srgrimes { "SMNT", SMNT, ARGS, 0, "(structure mount)" }, 11011592Srgrimes { "REIN", REIN, ARGS, 0, "(reinitialize server state)" }, 11021592Srgrimes { "QUIT", QUIT, ARGS, 1, "(terminate service)", }, 1103101806Syar { "PORT", PORT, ARGS, 1, "<sp> b0, b1, b2, b3, b4, b5" }, 110456668Sshin { "LPRT", LPRT, ARGS, 1, "<sp> af, hal, h1, h2, h3,..., pal, p1, p2..." }, 110556668Sshin { "EPRT", EPRT, STR1, 1, "<sp> |af|addr|port|" }, 11061592Srgrimes { "PASV", PASV, ARGS, 1, "(set server in passive mode)" }, 110756668Sshin { "LPSV", LPSV, ARGS, 1, "(set server in passive mode)" }, 110856668Sshin { "EPSV", EPSV, ARGS, 1, "[<sp> af|ALL]" }, 1109101806Syar { "TYPE", TYPE, ARGS, 1, "<sp> { A | E | I | L }" }, 11101592Srgrimes { "STRU", STRU, ARGS, 1, "(specify file structure)" }, 11111592Srgrimes { "MODE", MODE, ARGS, 1, "(specify transfer mode)" }, 11121592Srgrimes { "RETR", RETR, STR1, 1, "<sp> file-name" }, 11131592Srgrimes { "STOR", STOR, STR1, 1, "<sp> file-name" }, 11141592Srgrimes { "APPE", APPE, STR1, 1, "<sp> file-name" }, 11151592Srgrimes { "MLFL", MLFL, OSTR, 0, "(mail file)" }, 11161592Srgrimes { "MAIL", MAIL, OSTR, 0, "(mail to user)" }, 11171592Srgrimes { "MSND", MSND, OSTR, 0, "(mail send to terminal)" }, 11181592Srgrimes { "MSOM", MSOM, OSTR, 0, "(mail send to terminal or mailbox)" }, 11191592Srgrimes { "MSAM", MSAM, OSTR, 0, "(mail send to terminal and mailbox)" }, 11201592Srgrimes { "MRSQ", MRSQ, OSTR, 0, "(mail recipient scheme question)" }, 11211592Srgrimes { "MRCP", MRCP, STR1, 0, "(mail recipient)" }, 11221592Srgrimes { "ALLO", ALLO, ARGS, 1, "allocate storage (vacuously)" }, 11231592Srgrimes { "REST", REST, ARGS, 1, "<sp> offset (restart command)" }, 11241592Srgrimes { "RNFR", RNFR, STR1, 1, "<sp> file-name" }, 11251592Srgrimes { "RNTO", RNTO, STR1, 1, "<sp> file-name" }, 11261592Srgrimes { "ABOR", ABOR, ARGS, 1, "(abort operation)" }, 11271592Srgrimes { "DELE", DELE, STR1, 1, "<sp> file-name" }, 11281592Srgrimes { "CWD", CWD, OSTR, 1, "[ <sp> directory-name ]" }, 11291592Srgrimes { "XCWD", CWD, OSTR, 1, "[ <sp> directory-name ]" }, 11301592Srgrimes { "LIST", LIST, OSTR, 1, "[ <sp> path-name ]" }, 11311592Srgrimes { "NLST", NLST, OSTR, 1, "[ <sp> path-name ]" }, 11321592Srgrimes { "SITE", SITE, SITECMD, 1, "site-cmd [ <sp> arguments ]" }, 11331592Srgrimes { "SYST", SYST, ARGS, 1, "(get type of operating system)" }, 11341592Srgrimes { "STAT", STAT, OSTR, 1, "[ <sp> path-name ]" }, 11351592Srgrimes { "HELP", HELP, OSTR, 1, "[ <sp> <string> ]" }, 11361592Srgrimes { "NOOP", NOOP, ARGS, 1, "" }, 11371592Srgrimes { "MKD", MKD, STR1, 1, "<sp> path-name" }, 11381592Srgrimes { "XMKD", MKD, STR1, 1, "<sp> path-name" }, 11391592Srgrimes { "RMD", RMD, STR1, 1, "<sp> path-name" }, 11401592Srgrimes { "XRMD", RMD, STR1, 1, "<sp> path-name" }, 11411592Srgrimes { "PWD", PWD, ARGS, 1, "(return current directory)" }, 11421592Srgrimes { "XPWD", PWD, ARGS, 1, "(return current directory)" }, 11431592Srgrimes { "CDUP", CDUP, ARGS, 1, "(change to parent directory)" }, 11441592Srgrimes { "XCUP", CDUP, ARGS, 1, "(change to parent directory)" }, 11451592Srgrimes { "STOU", STOU, STR1, 1, "<sp> file-name" }, 11461592Srgrimes { "SIZE", SIZE, OSTR, 1, "<sp> path-name" }, 11471592Srgrimes { "MDTM", MDTM, OSTR, 1, "<sp> path-name" }, 11481592Srgrimes { NULL, 0, 0, 0, 0 } 11491592Srgrimes}; 11501592Srgrimes 11511592Srgrimesstruct tab sitetab[] = { 115275535Sphk { "MD5", MDFIVE, STR1, 1, "[ <sp> file-name ]" }, 11531592Srgrimes { "UMASK", UMASK, ARGS, 1, "[ <sp> umask ]" }, 11541592Srgrimes { "IDLE", IDLE, ARGS, 1, "[ <sp> maximum-idle-time ]" }, 11551592Srgrimes { "CHMOD", CHMOD, NSTR, 1, "<sp> mode <sp> file-name" }, 11561592Srgrimes { "HELP", HELP, OSTR, 1, "[ <sp> <string> ]" }, 11571592Srgrimes { NULL, 0, 0, 0, 0 } 11581592Srgrimes}; 11591592Srgrimes 116090148Simpstatic char *copy(char *); 116190148Simpstatic void help(struct tab *, char *); 11621592Srgrimesstatic struct tab * 116390148Simp lookup(struct tab *, char *); 116490148Simpstatic int port_check(const char *); 116590148Simpstatic int port_check_v6(const char *); 116690148Simpstatic void sizecmd(char *); 116790148Simpstatic void toolong(int); 116890148Simpstatic void v4map_data_dest(void); 116990148Simpstatic int yylex(void); 11701592Srgrimes 11711592Srgrimesstatic struct tab * 117290148Simplookup(struct tab *p, char *cmd) 11731592Srgrimes{ 11741592Srgrimes 11751592Srgrimes for (; p->name != NULL; p++) 11761592Srgrimes if (strcmp(cmd, p->name) == 0) 11771592Srgrimes return (p); 11781592Srgrimes return (0); 11791592Srgrimes} 11801592Srgrimes 11811592Srgrimes#include <arpa/telnet.h> 11821592Srgrimes 11831592Srgrimes/* 11841592Srgrimes * getline - a hacked up version of fgets to ignore TELNET escape codes. 11851592Srgrimes */ 11861592Srgrimeschar * 118790148Simpgetline(char *s, int n, FILE *iop) 11881592Srgrimes{ 11891592Srgrimes int c; 11901592Srgrimes register char *cs; 11911592Srgrimes 11921592Srgrimes cs = s; 11931592Srgrimes/* tmpline may contain saved command from urgent mode interruption */ 11941592Srgrimes for (c = 0; tmpline[c] != '\0' && --n > 0; ++c) { 11951592Srgrimes *cs++ = tmpline[c]; 11961592Srgrimes if (tmpline[c] == '\n') { 11971592Srgrimes *cs++ = '\0'; 119876096Smarkm if (ftpdebug) 11991592Srgrimes syslog(LOG_DEBUG, "command: %s", s); 12001592Srgrimes tmpline[0] = '\0'; 12011592Srgrimes return(s); 12021592Srgrimes } 12031592Srgrimes if (c == 0) 12041592Srgrimes tmpline[0] = '\0'; 12051592Srgrimes } 12061592Srgrimes while ((c = getc(iop)) != EOF) { 12071592Srgrimes c &= 0377; 12081592Srgrimes if (c == IAC) { 12091592Srgrimes if ((c = getc(iop)) != EOF) { 12101592Srgrimes c &= 0377; 12111592Srgrimes switch (c) { 12121592Srgrimes case WILL: 12131592Srgrimes case WONT: 12141592Srgrimes c = getc(iop); 12151592Srgrimes printf("%c%c%c", IAC, DONT, 0377&c); 12161592Srgrimes (void) fflush(stdout); 12171592Srgrimes continue; 12181592Srgrimes case DO: 12191592Srgrimes case DONT: 12201592Srgrimes c = getc(iop); 12211592Srgrimes printf("%c%c%c", IAC, WONT, 0377&c); 12221592Srgrimes (void) fflush(stdout); 12231592Srgrimes continue; 12241592Srgrimes case IAC: 12251592Srgrimes break; 12261592Srgrimes default: 12271592Srgrimes continue; /* ignore command */ 12281592Srgrimes } 12291592Srgrimes } 12301592Srgrimes } 12311592Srgrimes *cs++ = c; 12321592Srgrimes if (--n <= 0 || c == '\n') 12331592Srgrimes break; 12341592Srgrimes } 12351592Srgrimes if (c == EOF && cs == s) 12361592Srgrimes return (NULL); 12371592Srgrimes *cs++ = '\0'; 123876096Smarkm if (ftpdebug) { 12391592Srgrimes if (!guest && strncasecmp("pass ", s, 5) == 0) { 12401592Srgrimes /* Don't syslog passwords */ 12411592Srgrimes syslog(LOG_DEBUG, "command: %.5s ???", s); 12421592Srgrimes } else { 12431592Srgrimes register char *cp; 12441592Srgrimes register int len; 12451592Srgrimes 12461592Srgrimes /* Don't syslog trailing CR-LF */ 12471592Srgrimes len = strlen(s); 12481592Srgrimes cp = s + len - 1; 12491592Srgrimes while (cp >= s && (*cp == '\n' || *cp == '\r')) { 12501592Srgrimes --cp; 12511592Srgrimes --len; 12521592Srgrimes } 12531592Srgrimes syslog(LOG_DEBUG, "command: %.*s", len, s); 12541592Srgrimes } 12551592Srgrimes } 12561592Srgrimes return (s); 12571592Srgrimes} 12581592Srgrimes 12591592Srgrimesstatic void 126090148Simptoolong(int signo) 12611592Srgrimes{ 12621592Srgrimes 12631592Srgrimes reply(421, 12641592Srgrimes "Timeout (%d seconds): closing control connection.", timeout); 12651592Srgrimes if (logging) 12661592Srgrimes syslog(LOG_INFO, "User %s timed out after %d seconds", 12671592Srgrimes (pw ? pw -> pw_name : "unknown"), timeout); 12681592Srgrimes dologout(1); 12691592Srgrimes} 12701592Srgrimes 12711592Srgrimesstatic int 127290148Simpyylex(void) 12731592Srgrimes{ 127489935Syar static int cpos; 12751592Srgrimes char *cp, *cp2; 12761592Srgrimes struct tab *p; 12771592Srgrimes int n; 12781592Srgrimes char c; 12791592Srgrimes 12801592Srgrimes for (;;) { 12811592Srgrimes switch (state) { 12821592Srgrimes 12831592Srgrimes case CMD: 12841592Srgrimes (void) signal(SIGALRM, toolong); 12851592Srgrimes (void) alarm((unsigned) timeout); 12861592Srgrimes if (getline(cbuf, sizeof(cbuf)-1, stdin) == NULL) { 12871592Srgrimes reply(221, "You could at least say goodbye."); 12881592Srgrimes dologout(0); 12891592Srgrimes } 12901592Srgrimes (void) alarm(0); 12911592Srgrimes#ifdef SETPROCTITLE 129229574Sphk if (strncasecmp(cbuf, "PASS", 4) != 0) 12931592Srgrimes setproctitle("%s: %s", proctitle, cbuf); 12941592Srgrimes#endif /* SETPROCTITLE */ 12951592Srgrimes if ((cp = strchr(cbuf, '\r'))) { 12961592Srgrimes *cp++ = '\n'; 12971592Srgrimes *cp = '\0'; 12981592Srgrimes } 12991592Srgrimes if ((cp = strpbrk(cbuf, " \n"))) 13001592Srgrimes cpos = cp - cbuf; 13011592Srgrimes if (cpos == 0) 13021592Srgrimes cpos = 4; 13031592Srgrimes c = cbuf[cpos]; 13041592Srgrimes cbuf[cpos] = '\0'; 13051592Srgrimes upper(cbuf); 13061592Srgrimes p = lookup(cmdtab, cbuf); 13071592Srgrimes cbuf[cpos] = c; 13083776Spst if (p != 0) { 1309102565Syar yylval.s = p->name; 1310102565Syar if (!p->implemented) 1311102565Syar return (NOTIMPL); /* state remains CMD */ 13121592Srgrimes state = p->state; 13131592Srgrimes return (p->token); 13141592Srgrimes } 13151592Srgrimes break; 13161592Srgrimes 13171592Srgrimes case SITECMD: 13181592Srgrimes if (cbuf[cpos] == ' ') { 13191592Srgrimes cpos++; 13201592Srgrimes return (SP); 13211592Srgrimes } 13221592Srgrimes cp = &cbuf[cpos]; 13231592Srgrimes if ((cp2 = strpbrk(cp, " \n"))) 13241592Srgrimes cpos = cp2 - cbuf; 13251592Srgrimes c = cbuf[cpos]; 13261592Srgrimes cbuf[cpos] = '\0'; 13271592Srgrimes upper(cp); 13281592Srgrimes p = lookup(sitetab, cp); 13291592Srgrimes cbuf[cpos] = c; 13303777Spst if (guest == 0 && p != 0) { 1331102565Syar yylval.s = p->name; 1332102565Syar if (!p->implemented) { 13331592Srgrimes state = CMD; 1334102565Syar return (NOTIMPL); 13351592Srgrimes } 13361592Srgrimes state = p->state; 13371592Srgrimes return (p->token); 13381592Srgrimes } 13391592Srgrimes state = CMD; 13401592Srgrimes break; 13411592Srgrimes 134275556Sgreen case ZSTR1: 13431592Srgrimes case OSTR: 13441592Srgrimes if (cbuf[cpos] == '\n') { 13451592Srgrimes state = CMD; 13461592Srgrimes return (CRLF); 13471592Srgrimes } 13481592Srgrimes /* FALLTHROUGH */ 13491592Srgrimes 13501592Srgrimes case STR1: 13511592Srgrimes dostr1: 13521592Srgrimes if (cbuf[cpos] == ' ') { 13531592Srgrimes cpos++; 135451979Salfred state = state == OSTR ? STR2 : state+1; 13551592Srgrimes return (SP); 13561592Srgrimes } 13571592Srgrimes break; 13581592Srgrimes 13591592Srgrimes case ZSTR2: 13601592Srgrimes if (cbuf[cpos] == '\n') { 13611592Srgrimes state = CMD; 13621592Srgrimes return (CRLF); 13631592Srgrimes } 13641592Srgrimes /* FALLTHROUGH */ 13651592Srgrimes 13661592Srgrimes case STR2: 13671592Srgrimes cp = &cbuf[cpos]; 13681592Srgrimes n = strlen(cp); 13691592Srgrimes cpos += n - 1; 13701592Srgrimes /* 13711592Srgrimes * Make sure the string is nonempty and \n terminated. 13721592Srgrimes */ 13731592Srgrimes if (n > 1 && cbuf[cpos] == '\n') { 13741592Srgrimes cbuf[cpos] = '\0'; 13751592Srgrimes yylval.s = copy(cp); 13761592Srgrimes cbuf[cpos] = '\n'; 13771592Srgrimes state = ARGS; 13781592Srgrimes return (STRING); 13791592Srgrimes } 13801592Srgrimes break; 13811592Srgrimes 13821592Srgrimes case NSTR: 13831592Srgrimes if (cbuf[cpos] == ' ') { 13841592Srgrimes cpos++; 13851592Srgrimes return (SP); 13861592Srgrimes } 13871592Srgrimes if (isdigit(cbuf[cpos])) { 13881592Srgrimes cp = &cbuf[cpos]; 13891592Srgrimes while (isdigit(cbuf[++cpos])) 13901592Srgrimes ; 13911592Srgrimes c = cbuf[cpos]; 13921592Srgrimes cbuf[cpos] = '\0'; 139392272Smaxim yylval.u.i = atoi(cp); 13941592Srgrimes cbuf[cpos] = c; 13951592Srgrimes state = STR1; 13961592Srgrimes return (NUMBER); 13971592Srgrimes } 13981592Srgrimes state = STR1; 13991592Srgrimes goto dostr1; 14001592Srgrimes 14011592Srgrimes case ARGS: 14021592Srgrimes if (isdigit(cbuf[cpos])) { 14031592Srgrimes cp = &cbuf[cpos]; 14041592Srgrimes while (isdigit(cbuf[++cpos])) 14051592Srgrimes ; 14061592Srgrimes c = cbuf[cpos]; 14071592Srgrimes cbuf[cpos] = '\0'; 140892272Smaxim yylval.u.i = atoi(cp); 140992272Smaxim yylval.u.o = strtoull(cp, (char **)NULL, 10); 14101592Srgrimes cbuf[cpos] = c; 14111592Srgrimes return (NUMBER); 14121592Srgrimes } 141356668Sshin if (strncasecmp(&cbuf[cpos], "ALL", 3) == 0 141456668Sshin && !isalnum(cbuf[cpos + 3])) { 141556668Sshin cpos += 3; 141656668Sshin return ALL; 141756668Sshin } 14181592Srgrimes switch (cbuf[cpos++]) { 14191592Srgrimes 14201592Srgrimes case '\n': 14211592Srgrimes state = CMD; 14221592Srgrimes return (CRLF); 14231592Srgrimes 14241592Srgrimes case ' ': 14251592Srgrimes return (SP); 14261592Srgrimes 14271592Srgrimes case ',': 14281592Srgrimes return (COMMA); 14291592Srgrimes 14301592Srgrimes case 'A': 14311592Srgrimes case 'a': 14321592Srgrimes return (A); 14331592Srgrimes 14341592Srgrimes case 'B': 14351592Srgrimes case 'b': 14361592Srgrimes return (B); 14371592Srgrimes 14381592Srgrimes case 'C': 14391592Srgrimes case 'c': 14401592Srgrimes return (C); 14411592Srgrimes 14421592Srgrimes case 'E': 14431592Srgrimes case 'e': 14441592Srgrimes return (E); 14451592Srgrimes 14461592Srgrimes case 'F': 14471592Srgrimes case 'f': 14481592Srgrimes return (F); 14491592Srgrimes 14501592Srgrimes case 'I': 14511592Srgrimes case 'i': 14521592Srgrimes return (I); 14531592Srgrimes 14541592Srgrimes case 'L': 14551592Srgrimes case 'l': 14561592Srgrimes return (L); 14571592Srgrimes 14581592Srgrimes case 'N': 14591592Srgrimes case 'n': 14601592Srgrimes return (N); 14611592Srgrimes 14621592Srgrimes case 'P': 14631592Srgrimes case 'p': 14641592Srgrimes return (P); 14651592Srgrimes 14661592Srgrimes case 'R': 14671592Srgrimes case 'r': 14681592Srgrimes return (R); 14691592Srgrimes 14701592Srgrimes case 'S': 14711592Srgrimes case 's': 14721592Srgrimes return (S); 14731592Srgrimes 14741592Srgrimes case 'T': 14751592Srgrimes case 't': 14761592Srgrimes return (T); 14771592Srgrimes 14781592Srgrimes } 14791592Srgrimes break; 14801592Srgrimes 14811592Srgrimes default: 148276096Smarkm fatalerror("Unknown state in scanner."); 14831592Srgrimes } 14841592Srgrimes state = CMD; 148589935Syar return (LEXERR); 14861592Srgrimes } 14871592Srgrimes} 14881592Srgrimes 14891592Srgrimesvoid 149090148Simpupper(char *s) 14911592Srgrimes{ 14921592Srgrimes while (*s != '\0') { 14931592Srgrimes if (islower(*s)) 14941592Srgrimes *s = toupper(*s); 14951592Srgrimes s++; 14961592Srgrimes } 14971592Srgrimes} 14981592Srgrimes 14991592Srgrimesstatic char * 150090148Simpcopy(char *s) 15011592Srgrimes{ 15021592Srgrimes char *p; 15031592Srgrimes 15041592Srgrimes p = malloc((unsigned) strlen(s) + 1); 15051592Srgrimes if (p == NULL) 150676096Smarkm fatalerror("Ran out of memory."); 15071592Srgrimes (void) strcpy(p, s); 15081592Srgrimes return (p); 15091592Srgrimes} 15101592Srgrimes 15111592Srgrimesstatic void 151290148Simphelp(struct tab *ctab, char *s) 15131592Srgrimes{ 15141592Srgrimes struct tab *c; 15151592Srgrimes int width, NCMDS; 15161592Srgrimes char *type; 15171592Srgrimes 15181592Srgrimes if (ctab == sitetab) 15191592Srgrimes type = "SITE "; 15201592Srgrimes else 15211592Srgrimes type = ""; 15221592Srgrimes width = 0, NCMDS = 0; 15231592Srgrimes for (c = ctab; c->name != NULL; c++) { 15241592Srgrimes int len = strlen(c->name); 15251592Srgrimes 15261592Srgrimes if (len > width) 15271592Srgrimes width = len; 15281592Srgrimes NCMDS++; 15291592Srgrimes } 15301592Srgrimes width = (width + 8) &~ 7; 15311592Srgrimes if (s == 0) { 15321592Srgrimes int i, j, w; 15331592Srgrimes int columns, lines; 15341592Srgrimes 15351592Srgrimes lreply(214, "The following %scommands are recognized %s.", 15361592Srgrimes type, "(* =>'s unimplemented)"); 15371592Srgrimes columns = 76 / width; 15381592Srgrimes if (columns == 0) 15391592Srgrimes columns = 1; 15401592Srgrimes lines = (NCMDS + columns - 1) / columns; 15411592Srgrimes for (i = 0; i < lines; i++) { 15421592Srgrimes printf(" "); 15431592Srgrimes for (j = 0; j < columns; j++) { 15441592Srgrimes c = ctab + j * lines + i; 15451592Srgrimes printf("%s%c", c->name, 15461592Srgrimes c->implemented ? ' ' : '*'); 15471592Srgrimes if (c + lines >= &ctab[NCMDS]) 15481592Srgrimes break; 15491592Srgrimes w = strlen(c->name) + 1; 15501592Srgrimes while (w < width) { 15511592Srgrimes putchar(' '); 15521592Srgrimes w++; 15531592Srgrimes } 15541592Srgrimes } 15551592Srgrimes printf("\r\n"); 15561592Srgrimes } 15571592Srgrimes (void) fflush(stdout); 1558110037Syar if (hostinfo) 1559110037Syar reply(214, "Direct comments to ftp-bugs@%s.", hostname); 1560110037Syar else 1561110037Syar reply(214, "End."); 15621592Srgrimes return; 15631592Srgrimes } 15641592Srgrimes upper(s); 15651592Srgrimes c = lookup(ctab, s); 15661592Srgrimes if (c == (struct tab *)0) { 15671592Srgrimes reply(502, "Unknown command %s.", s); 15681592Srgrimes return; 15691592Srgrimes } 15701592Srgrimes if (c->implemented) 15711592Srgrimes reply(214, "Syntax: %s%s %s", type, c->name, c->help); 15721592Srgrimes else 15731592Srgrimes reply(214, "%s%-*s\t%s; unimplemented.", type, width, 15741592Srgrimes c->name, c->help); 15751592Srgrimes} 15761592Srgrimes 15771592Srgrimesstatic void 157890148Simpsizecmd(char *filename) 15791592Srgrimes{ 15801592Srgrimes switch (type) { 15811592Srgrimes case TYPE_L: 15821592Srgrimes case TYPE_I: { 15831592Srgrimes struct stat stbuf; 158463350Sdes if (stat(filename, &stbuf) < 0) 158563350Sdes perror_reply(550, filename); 158663350Sdes else if (!S_ISREG(stbuf.st_mode)) 15871592Srgrimes reply(550, "%s: not a plain file.", filename); 15881592Srgrimes else 15891592Srgrimes reply(213, "%qu", stbuf.st_size); 15901592Srgrimes break; } 15911592Srgrimes case TYPE_A: { 15921592Srgrimes FILE *fin; 15931592Srgrimes int c; 15941592Srgrimes off_t count; 15951592Srgrimes struct stat stbuf; 15961592Srgrimes fin = fopen(filename, "r"); 15971592Srgrimes if (fin == NULL) { 15981592Srgrimes perror_reply(550, filename); 15991592Srgrimes return; 16001592Srgrimes } 160163350Sdes if (fstat(fileno(fin), &stbuf) < 0) { 160263350Sdes perror_reply(550, filename); 160363350Sdes (void) fclose(fin); 160463350Sdes return; 160563350Sdes } else if (!S_ISREG(stbuf.st_mode)) { 16061592Srgrimes reply(550, "%s: not a plain file.", filename); 16071592Srgrimes (void) fclose(fin); 16081592Srgrimes return; 1609101034Syar } else if (stbuf.st_size > MAXASIZE) { 1610101034Syar reply(550, "%s: too large for type A SIZE.", filename); 1611101034Syar (void) fclose(fin); 1612101034Syar return; 16131592Srgrimes } 16141592Srgrimes 16151592Srgrimes count = 0; 16161592Srgrimes while((c=getc(fin)) != EOF) { 16171592Srgrimes if (c == '\n') /* will get expanded to \r\n */ 16181592Srgrimes count++; 16191592Srgrimes count++; 16201592Srgrimes } 16211592Srgrimes (void) fclose(fin); 16221592Srgrimes 16231592Srgrimes reply(213, "%qd", count); 16241592Srgrimes break; } 16251592Srgrimes default: 1626100684Syar reply(504, "SIZE not implemented for type %s.", 1627100684Syar typenames[type]); 16281592Srgrimes } 16291592Srgrimes} 163056668Sshin 163156668Sshin/* Return 1, if port check is done. Return 0, if not yet. */ 163256668Sshinstatic int 163390148Simpport_check(const char *pcmd) 163456668Sshin{ 163556668Sshin if (his_addr.su_family == AF_INET) { 163656668Sshin if (data_dest.su_family != AF_INET) { 163756668Sshin usedefault = 1; 163856668Sshin reply(500, "Invalid address rejected."); 163956668Sshin return 1; 164056668Sshin } 164156668Sshin if (paranoid && 164256668Sshin ((ntohs(data_dest.su_port) < IPPORT_RESERVED) || 164356668Sshin memcmp(&data_dest.su_sin.sin_addr, 164456668Sshin &his_addr.su_sin.sin_addr, 164556668Sshin sizeof(data_dest.su_sin.sin_addr)))) { 164656668Sshin usedefault = 1; 164756668Sshin reply(500, "Illegal PORT range rejected."); 164856668Sshin } else { 164956668Sshin usedefault = 0; 165056668Sshin if (pdata >= 0) { 165156668Sshin (void) close(pdata); 165256668Sshin pdata = -1; 165356668Sshin } 165456668Sshin reply(200, "%s command successful.", pcmd); 165556668Sshin } 165656668Sshin return 1; 165756668Sshin } 165856668Sshin return 0; 165956668Sshin} 166056668Sshin 166170102Sphkstatic int 166290148Simpcheck_login1(void) 166370102Sphk{ 166470102Sphk if (logged_in) 166570102Sphk return 1; 166670102Sphk else { 166770102Sphk reply(530, "Please login with USER and PASS."); 166870102Sphk return 0; 166970102Sphk } 167070102Sphk} 167170102Sphk 167256668Sshin#ifdef INET6 167356668Sshin/* Return 1, if port check is done. Return 0, if not yet. */ 167456668Sshinstatic int 167590148Simpport_check_v6(const char *pcmd) 167656668Sshin{ 167756668Sshin if (his_addr.su_family == AF_INET6) { 167856668Sshin if (IN6_IS_ADDR_V4MAPPED(&his_addr.su_sin6.sin6_addr)) 167956668Sshin /* Convert data_dest into v4 mapped sockaddr.*/ 168056668Sshin v4map_data_dest(); 168156668Sshin if (data_dest.su_family != AF_INET6) { 168256668Sshin usedefault = 1; 168356668Sshin reply(500, "Invalid address rejected."); 168456668Sshin return 1; 168556668Sshin } 168656668Sshin if (paranoid && 168756668Sshin ((ntohs(data_dest.su_port) < IPPORT_RESERVED) || 168856668Sshin memcmp(&data_dest.su_sin6.sin6_addr, 168956668Sshin &his_addr.su_sin6.sin6_addr, 169056668Sshin sizeof(data_dest.su_sin6.sin6_addr)))) { 169156668Sshin usedefault = 1; 169256668Sshin reply(500, "Illegal PORT range rejected."); 169356668Sshin } else { 169456668Sshin usedefault = 0; 169556668Sshin if (pdata >= 0) { 169656668Sshin (void) close(pdata); 169756668Sshin pdata = -1; 169856668Sshin } 169956668Sshin reply(200, "%s command successful.", pcmd); 170056668Sshin } 170156668Sshin return 1; 170256668Sshin } 170356668Sshin return 0; 170456668Sshin} 170556668Sshin 170656668Sshinstatic void 170790148Simpv4map_data_dest(void) 170856668Sshin{ 170956668Sshin struct in_addr savedaddr; 171056668Sshin int savedport; 171156668Sshin 171256668Sshin if (data_dest.su_family != AF_INET) { 171356668Sshin usedefault = 1; 171456668Sshin reply(500, "Invalid address rejected."); 171556668Sshin return; 171656668Sshin } 171756668Sshin 171856668Sshin savedaddr = data_dest.su_sin.sin_addr; 171956668Sshin savedport = data_dest.su_port; 172056668Sshin 172156668Sshin memset(&data_dest, 0, sizeof(data_dest)); 172256668Sshin data_dest.su_sin6.sin6_len = sizeof(struct sockaddr_in6); 172356668Sshin data_dest.su_sin6.sin6_family = AF_INET6; 172456668Sshin data_dest.su_sin6.sin6_port = savedport; 172556668Sshin memset((caddr_t)&data_dest.su_sin6.sin6_addr.s6_addr[10], 0xff, 2); 172656668Sshin memcpy((caddr_t)&data_dest.su_sin6.sin6_addr.s6_addr[12], 172756668Sshin (caddr_t)&savedaddr, sizeof(savedaddr)); 172856668Sshin} 172956668Sshin#endif 1730