diff options
Diffstat (limited to 'crypto/heimdal/appl/ftp/ftpd/ftpcmd.y')
-rw-r--r-- | crypto/heimdal/appl/ftp/ftpd/ftpcmd.y | 1496 |
1 files changed, 0 insertions, 1496 deletions
diff --git a/crypto/heimdal/appl/ftp/ftpd/ftpcmd.y b/crypto/heimdal/appl/ftp/ftpd/ftpcmd.y deleted file mode 100644 index 963a6a0..0000000 --- a/crypto/heimdal/appl/ftp/ftpd/ftpcmd.y +++ /dev/null @@ -1,1496 +0,0 @@ -/* $NetBSD: ftpcmd.y,v 1.6 1995/06/03 22:46:45 mycroft Exp $ */ - -/* - * Copyright (c) 1985, 1988, 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. - * - * @(#)ftpcmd.y 8.3 (Berkeley) 4/6/94 - */ - -/* - * Grammar for FTP commands. - * See RFC 959. - */ - -%{ - -#include "ftpd_locl.h" -RCSID("$Id: ftpcmd.y 15677 2005-07-19 18:33:08Z lha $"); - -off_t restart_point; - -static int hasyyerrored; - - -static int cmd_type; -static int cmd_form; -static int cmd_bytesz; -char cbuf[64*1024]; -char *fromname; - -struct tab { - char *name; - short token; - short state; - short implemented; /* 1 if command is implemented */ - char *help; -}; - -extern struct tab cmdtab[]; -extern struct tab sitetab[]; - -static char *copy (char *); -static void help (struct tab *, char *); -static struct tab * - lookup (struct tab *, char *); -static void sizecmd (char *); -static RETSIGTYPE toolong (int); -static int yylex (void); - -/* This is for bison */ - -#if !defined(alloca) && !defined(HAVE_ALLOCA) -#define alloca(x) malloc(x) -#endif - -%} - -%union { - int i; - char *s; -} - -%token - A B C E F I - L N P R S T - - SP CRLF COMMA - - USER PASS ACCT REIN QUIT PORT - PASV TYPE STRU MODE RETR STOR - APPE MLFL MAIL MSND MSOM MSAM - MRSQ MRCP ALLO REST RNFR RNTO - ABOR DELE CWD LIST NLST SITE - sTAT HELP NOOP MKD RMD PWD - CDUP STOU SMNT SYST SIZE MDTM - EPRT EPSV - - UMASK IDLE CHMOD - - AUTH ADAT PROT PBSZ CCC MIC - CONF ENC - - KAUTH KLIST KDESTROY KRBTKFILE AFSLOG - LOCATE URL - - FEAT OPTS - - LEXERR - -%token <s> STRING -%token <i> NUMBER - -%type <i> check_login check_login_no_guest check_secure octal_number byte_size -%type <i> struct_code mode_code type_code form_code -%type <s> pathstring pathname password username - -%start cmd_list - -%% - -cmd_list - : /* empty */ - | cmd_list cmd - { - fromname = (char *) 0; - restart_point = (off_t) 0; - } - | cmd_list rcmd - ; - -cmd - : USER SP username CRLF check_secure - { - if ($5) - user($3); - free($3); - } - | PASS SP password CRLF check_secure - { - if ($5) - pass($3); - memset ($3, 0, strlen($3)); - free($3); - } - | PORT SP host_port CRLF check_secure - { - if ($5) { - usedefault = 0; - if (pdata >= 0) { - close(pdata); - pdata = -1; - } - reply(200, "PORT command successful."); - } - } - | EPRT SP STRING CRLF check_secure - { - if ($5) - eprt ($3); - free ($3); - } - | PASV CRLF check_login - { - if($3) - pasv (); - } - | EPSV CRLF check_login - { - if($3) - epsv (NULL); - } - | EPSV SP STRING CRLF check_login - { - if($5) - epsv ($3); - free ($3); - } - | TYPE SP type_code CRLF check_secure - { - if ($5) { - switch (cmd_type) { - - case TYPE_A: - if (cmd_form == FORM_N) { - reply(200, "Type set to A."); - type = cmd_type; - form = cmd_form; - } else - reply(504, "Form must be N."); - break; - - case TYPE_E: - reply(504, "Type E not implemented."); - break; - - case TYPE_I: - reply(200, "Type set to I."); - type = cmd_type; - break; - - case TYPE_L: -#if NBBY == 8 - if (cmd_bytesz == 8) { - reply(200, - "Type set to L (byte size 8)."); - type = cmd_type; - } else - reply(504, "Byte size must be 8."); -#else /* NBBY == 8 */ - UNIMPLEMENTED for NBBY != 8 -#endif /* NBBY == 8 */ - } - } - } - | STRU SP struct_code CRLF check_secure - { - if ($5) { - switch ($3) { - - case STRU_F: - reply(200, "STRU F ok."); - break; - - default: - reply(504, "Unimplemented STRU type."); - } - } - } - | MODE SP mode_code CRLF check_secure - { - if ($5) { - switch ($3) { - - case MODE_S: - reply(200, "MODE S ok."); - break; - - default: - reply(502, "Unimplemented MODE type."); - } - } - } - | ALLO SP NUMBER CRLF check_secure - { - if ($5) { - reply(202, "ALLO command ignored."); - } - } - | ALLO SP NUMBER SP R SP NUMBER CRLF check_secure - { - if ($9) { - reply(202, "ALLO command ignored."); - } - } - | RETR SP pathname CRLF check_login - { - char *name = $3; - - if ($5 && name != NULL) - retrieve(0, name); - if (name != NULL) - free(name); - } - | STOR SP pathname CRLF check_login - { - char *name = $3; - - if ($5 && name != NULL) - do_store(name, "w", 0); - if (name != NULL) - free(name); - } - | APPE SP pathname CRLF check_login - { - char *name = $3; - - if ($5 && name != NULL) - do_store(name, "a", 0); - if (name != NULL) - free(name); - } - | NLST CRLF check_login - { - if ($3) - send_file_list("."); - } - | NLST SP STRING CRLF check_login - { - char *name = $3; - - if ($5 && name != NULL) - send_file_list(name); - if (name != NULL) - free(name); - } - | LIST CRLF check_login - { - if($3) - list_file("."); - } - | LIST SP pathname CRLF check_login - { - if($5) - list_file($3); - free($3); - } - | sTAT SP pathname CRLF check_login - { - if ($5 && $3 != NULL) - statfilecmd($3); - if ($3 != NULL) - free($3); - } - | sTAT CRLF check_secure - { - if ($3) - statcmd(); - } - | DELE SP pathname CRLF check_login_no_guest - { - if ($5 && $3 != NULL) - do_delete($3); - if ($3 != NULL) - free($3); - } - | RNTO SP pathname CRLF check_login_no_guest - { - if($5){ - if (fromname) { - renamecmd(fromname, $3); - free(fromname); - fromname = (char *) 0; - } else { - reply(503, "Bad sequence of commands."); - } - } - if ($3 != NULL) - free($3); - } - | ABOR CRLF check_secure - { - if ($3) - reply(225, "ABOR command successful."); - } - | CWD CRLF check_login - { - if ($3) - cwd(pw->pw_dir); - } - | CWD SP pathname CRLF check_login - { - if ($5 && $3 != NULL) - cwd($3); - if ($3 != NULL) - free($3); - } - | HELP CRLF check_secure - { - if ($3) - help(cmdtab, (char *) 0); - } - | HELP SP STRING CRLF check_secure - { - if ($5) { - char *cp = $3; - - if (strncasecmp(cp, "SITE", 4) == 0) { - cp = $3 + 4; - if (*cp == ' ') - cp++; - if (*cp) - help(sitetab, cp); - else - help(sitetab, (char *) 0); - } else - help(cmdtab, $3); - } - } - | NOOP CRLF check_secure - { - if ($3) - reply(200, "NOOP command successful."); - } - | MKD SP pathname CRLF check_login - { - if ($5 && $3 != NULL) - makedir($3); - if ($3 != NULL) - free($3); - } - | RMD SP pathname CRLF check_login_no_guest - { - if ($5 && $3 != NULL) - removedir($3); - if ($3 != NULL) - free($3); - } - | PWD CRLF check_login - { - if ($3) - pwd(); - } - | CDUP CRLF check_login - { - if ($3) - cwd(".."); - } - | FEAT CRLF check_secure - { - if ($3) { - lreply(211, "Supported features:"); - lreply(0, " MDTM"); - lreply(0, " REST STREAM"); - lreply(0, " SIZE"); - reply(211, "End"); - } - } - | OPTS SP STRING CRLF check_secure - { - if ($5) - reply(501, "Bad options"); - free ($3); - } - - | SITE SP HELP CRLF check_secure - { - if ($5) - help(sitetab, (char *) 0); - } - | SITE SP HELP SP STRING CRLF check_secure - { - if ($7) - help(sitetab, $5); - } - | SITE SP UMASK CRLF check_login - { - if ($5) { - int oldmask = umask(0); - umask(oldmask); - reply(200, "Current UMASK is %03o", oldmask); - } - } - | SITE SP UMASK SP octal_number CRLF check_login_no_guest - { - if ($7) { - if (($5 == -1) || ($5 > 0777)) { - reply(501, "Bad UMASK value"); - } else { - int oldmask = umask($5); - reply(200, - "UMASK set to %03o (was %03o)", - $5, oldmask); - } - } - } - | SITE SP CHMOD SP octal_number SP pathname CRLF check_login_no_guest - { - if ($9 && $7 != NULL) { - if ($5 > 0777) - reply(501, - "CHMOD: Mode value must be between 0 and 0777"); - else if (chmod($7, $5) < 0) - perror_reply(550, $7); - else - reply(200, "CHMOD command successful."); - } - if ($7 != NULL) - free($7); - } - | SITE SP IDLE CRLF check_secure - { - if ($5) - reply(200, - "Current IDLE time limit is %d seconds; max %d", - ftpd_timeout, maxtimeout); - } - | SITE SP IDLE SP NUMBER CRLF check_secure - { - if ($7) { - if ($5 < 30 || $5 > maxtimeout) { - reply(501, - "Maximum IDLE time must be between 30 and %d seconds", - maxtimeout); - } else { - ftpd_timeout = $5; - alarm((unsigned) ftpd_timeout); - reply(200, - "Maximum IDLE time set to %d seconds", - ftpd_timeout); - } - } - } - - | SITE SP KAUTH SP STRING CRLF check_login - { -#ifdef KRB4 - char *p; - - if(guest) - reply(500, "Can't be done as guest."); - else{ - if($7 && $5 != NULL){ - p = strpbrk($5, " \t"); - if(p){ - *p++ = 0; - kauth($5, p + strspn(p, " \t")); - }else - kauth($5, NULL); - } - } - if($5 != NULL) - free($5); -#else - reply(500, "Command not implemented."); -#endif - } - | SITE SP KLIST CRLF check_login - { - if($5) - klist(); - } - | SITE SP KDESTROY CRLF check_login - { -#ifdef KRB4 - if($5) - kdestroy(); -#else - reply(500, "Command not implemented."); -#endif - } - | SITE SP KRBTKFILE SP STRING CRLF check_login - { -#ifdef KRB4 - if(guest) - reply(500, "Can't be done as guest."); - else if($7 && $5) - krbtkfile($5); - if($5) - free($5); -#else - reply(500, "Command not implemented."); -#endif - } - | SITE SP AFSLOG CRLF check_login - { -#if defined(KRB4) || defined(KRB5) - if(guest) - reply(500, "Can't be done as guest."); - else if($5) - afslog(NULL, 0); -#else - reply(500, "Command not implemented."); -#endif - } - | SITE SP AFSLOG SP STRING CRLF check_login - { -#if defined(KRB4) || defined(KRB5) - if(guest) - reply(500, "Can't be done as guest."); - else if($7) - afslog($5, 0); - if($5) - free($5); -#else - reply(500, "Command not implemented."); -#endif - } - | SITE SP LOCATE SP STRING CRLF check_login - { - if($7 && $5 != NULL) - find($5); - if($5 != NULL) - free($5); - } - | SITE SP URL CRLF check_secure - { - if ($5) - reply(200, "http://www.pdc.kth.se/heimdal/"); - } - | STOU SP pathname CRLF check_login - { - if ($5 && $3 != NULL) - do_store($3, "w", 1); - if ($3 != NULL) - free($3); - } - | SYST CRLF check_secure - { - if ($3) { -#if !defined(WIN32) && !defined(__EMX__) && !defined(__OS2__) && !defined(__CYGWIN32__) - reply(215, "UNIX Type: L%d", NBBY); -#else - reply(215, "UNKNOWN Type: L%d", NBBY); -#endif - } - } - - /* - * SIZE is not in RFC959, but Postel has blessed it and - * it will be in the updated RFC. - * - * Return size of file in a format suitable for - * using with RESTART (we just count bytes). - */ - | SIZE SP pathname CRLF check_login - { - if ($5 && $3 != NULL) - sizecmd($3); - if ($3 != NULL) - free($3); - } - - /* - * MDTM is not in RFC959, but Postel has blessed it and - * it will be in the updated RFC. - * - * Return modification time of file as an ISO 3307 - * style time. E.g. YYYYMMDDHHMMSS or YYYYMMDDHHMMSS.xxx - * where xxx is the fractional second (of any precision, - * not necessarily 3 digits) - */ - | MDTM SP pathname CRLF check_login - { - if ($5 && $3 != NULL) { - struct stat stbuf; - if (stat($3, &stbuf) < 0) - reply(550, "%s: %s", - $3, strerror(errno)); - else if (!S_ISREG(stbuf.st_mode)) { - reply(550, - "%s: not a plain file.", $3); - } else { - struct tm *t; - time_t mtime = stbuf.st_mtime; - - t = gmtime(&mtime); - reply(213, - "%04d%02d%02d%02d%02d%02d", - t->tm_year + 1900, - t->tm_mon + 1, - t->tm_mday, - t->tm_hour, - t->tm_min, - t->tm_sec); - } - } - if ($3 != NULL) - free($3); - } - | QUIT CRLF check_secure - { - if ($3) { - reply(221, "Goodbye."); - dologout(0); - } - } - | error CRLF - { - yyerrok; - } - ; -rcmd - : RNFR SP pathname CRLF check_login_no_guest - { - restart_point = (off_t) 0; - if ($5 && $3) { - fromname = renamefrom($3); - if (fromname == (char *) 0 && $3) { - free($3); - } - } - } - | REST SP byte_size CRLF check_secure - { - if ($5) { - fromname = (char *) 0; - restart_point = $3; /* XXX $3 is only "int" */ - reply(350, "Restarting at %ld. %s", - (long)restart_point, - "Send STORE or RETRIEVE to initiate transfer."); - } - } - | AUTH SP STRING CRLF - { - auth($3); - free($3); - } - | ADAT SP STRING CRLF - { - adat($3); - free($3); - } - | PBSZ SP NUMBER CRLF check_secure - { - if ($5) - pbsz($3); - } - | PROT SP STRING CRLF check_secure - { - if ($5) - prot($3); - } - | CCC CRLF check_secure - { - if ($3) - ccc(); - } - | MIC SP STRING CRLF - { - mec($3, prot_safe); - free($3); - } - | CONF SP STRING CRLF - { - mec($3, prot_confidential); - free($3); - } - | ENC SP STRING CRLF - { - mec($3, prot_private); - free($3); - } - ; - -username - : STRING - ; - -password - : /* empty */ - { - $$ = (char *)calloc(1, sizeof(char)); - } - | STRING - ; - -byte_size - : NUMBER - ; - -host_port - : NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA - NUMBER COMMA NUMBER - { - struct sockaddr_in *sin4 = (struct sockaddr_in *)data_dest; - - sin4->sin_family = AF_INET; - sin4->sin_port = htons($9 * 256 + $11); - sin4->sin_addr.s_addr = - htonl(($1 << 24) | ($3 << 16) | ($5 << 8) | $7); - } - ; - -form_code - : N - { - $$ = FORM_N; - } - | T - { - $$ = FORM_T; - } - | C - { - $$ = FORM_C; - } - ; - -type_code - : A - { - cmd_type = TYPE_A; - cmd_form = FORM_N; - } - | A SP form_code - { - cmd_type = TYPE_A; - cmd_form = $3; - } - | E - { - cmd_type = TYPE_E; - cmd_form = FORM_N; - } - | E SP form_code - { - cmd_type = TYPE_E; - cmd_form = $3; - } - | I - { - cmd_type = TYPE_I; - } - | L - { - cmd_type = TYPE_L; - cmd_bytesz = NBBY; - } - | L SP byte_size - { - cmd_type = TYPE_L; - cmd_bytesz = $3; - } - /* this is for a bug in the BBN ftp */ - | L byte_size - { - cmd_type = TYPE_L; - cmd_bytesz = $2; - } - ; - -struct_code - : F - { - $$ = STRU_F; - } - | R - { - $$ = STRU_R; - } - | P - { - $$ = STRU_P; - } - ; - -mode_code - : S - { - $$ = MODE_S; - } - | B - { - $$ = MODE_B; - } - | C - { - $$ = MODE_C; - } - ; - -pathname - : pathstring - { - /* - * Problem: this production is used for all pathname - * processing, but only gives a 550 error reply. - * This is a valid reply in some cases but not in others. - */ - if (logged_in && $1 && *$1 == '~') { - glob_t gl; - int flags = - GLOB_BRACE|GLOB_NOCHECK|GLOB_QUOTE|GLOB_TILDE; - - memset(&gl, 0, sizeof(gl)); - if (glob($1, flags, NULL, &gl) || - gl.gl_pathc == 0) { - reply(550, "not found"); - $$ = NULL; - } else { - $$ = strdup(gl.gl_pathv[0]); - } - globfree(&gl); - free($1); - } else - $$ = $1; - } - ; - -pathstring - : STRING - ; - -octal_number - : NUMBER - { - int ret, dec, multby, digit; - - /* - * Convert a number that was read as decimal number - * to what it would be if it had been read as octal. - */ - dec = $1; - multby = 1; - ret = 0; - while (dec) { - digit = dec%10; - if (digit > 7) { - ret = -1; - break; - } - ret += digit * multby; - multby *= 8; - dec /= 10; - } - $$ = ret; - } - ; - - -check_login_no_guest : check_login - { - $$ = $1 && !guest; - if($1 && !$$) - reply(550, "Permission denied"); - } - ; - -check_login : check_secure - { - if($1) { - if(($$ = logged_in) == 0) - reply(530, "Please login with USER and PASS."); - } else - $$ = 0; - } - ; - -check_secure : /* empty */ - { - $$ = 1; - if(sec_complete && !ccc_passed && !secure_command()) { - $$ = 0; - reply(533, "Command protection level denied " - "for paranoid reasons."); - } - } - ; - -%% - -#define CMD 0 /* beginning of command */ -#define ARGS 1 /* expect miscellaneous arguments */ -#define STR1 2 /* expect SP followed by STRING */ -#define STR2 3 /* expect STRING */ -#define OSTR 4 /* optional SP then STRING */ -#define ZSTR1 5 /* SP then optional STRING */ -#define ZSTR2 6 /* optional STRING after SP */ -#define SITECMD 7 /* SITE command */ -#define NSTR 8 /* Number followed by a string */ - -struct tab cmdtab[] = { /* In order defined in RFC 765 */ - { "USER", USER, STR1, 1, "<sp> username" }, - { "PASS", PASS, ZSTR1, 1, "<sp> password" }, - { "ACCT", ACCT, STR1, 0, "(specify account)" }, - { "SMNT", SMNT, ARGS, 0, "(structure mount)" }, - { "REIN", REIN, ARGS, 0, "(reinitialize server state)" }, - { "QUIT", QUIT, ARGS, 1, "(terminate service)", }, - { "PORT", PORT, ARGS, 1, "<sp> b0, b1, b2, b3, b4" }, - { "EPRT", EPRT, STR1, 1, "<sp> string" }, - { "PASV", PASV, ARGS, 1, "(set server in passive mode)" }, - { "EPSV", EPSV, OSTR, 1, "[<sp> foo]" }, - { "TYPE", TYPE, ARGS, 1, "<sp> [ A | E | I | L ]" }, - { "STRU", STRU, ARGS, 1, "(specify file structure)" }, - { "MODE", MODE, ARGS, 1, "(specify transfer mode)" }, - { "RETR", RETR, STR1, 1, "<sp> file-name" }, - { "STOR", STOR, STR1, 1, "<sp> file-name" }, - { "APPE", APPE, STR1, 1, "<sp> file-name" }, - { "MLFL", MLFL, OSTR, 0, "(mail file)" }, - { "MAIL", MAIL, OSTR, 0, "(mail to user)" }, - { "MSND", MSND, OSTR, 0, "(mail send to terminal)" }, - { "MSOM", MSOM, OSTR, 0, "(mail send to terminal or mailbox)" }, - { "MSAM", MSAM, OSTR, 0, "(mail send to terminal and mailbox)" }, - { "MRSQ", MRSQ, OSTR, 0, "(mail recipient scheme question)" }, - { "MRCP", MRCP, STR1, 0, "(mail recipient)" }, - { "ALLO", ALLO, ARGS, 1, "allocate storage (vacuously)" }, - { "REST", REST, ARGS, 1, "<sp> offset (restart command)" }, - { "RNFR", RNFR, STR1, 1, "<sp> file-name" }, - { "RNTO", RNTO, STR1, 1, "<sp> file-name" }, - { "ABOR", ABOR, ARGS, 1, "(abort operation)" }, - { "DELE", DELE, STR1, 1, "<sp> file-name" }, - { "CWD", CWD, OSTR, 1, "[ <sp> directory-name ]" }, - { "XCWD", CWD, OSTR, 1, "[ <sp> directory-name ]" }, - { "LIST", LIST, OSTR, 1, "[ <sp> path-name ]" }, - { "NLST", NLST, OSTR, 1, "[ <sp> path-name ]" }, - { "SITE", SITE, SITECMD, 1, "site-cmd [ <sp> arguments ]" }, - { "SYST", SYST, ARGS, 1, "(get type of operating system)" }, - { "STAT", sTAT, OSTR, 1, "[ <sp> path-name ]" }, - { "HELP", HELP, OSTR, 1, "[ <sp> <string> ]" }, - { "NOOP", NOOP, ARGS, 1, "" }, - { "MKD", MKD, STR1, 1, "<sp> path-name" }, - { "XMKD", MKD, STR1, 1, "<sp> path-name" }, - { "RMD", RMD, STR1, 1, "<sp> path-name" }, - { "XRMD", RMD, STR1, 1, "<sp> path-name" }, - { "PWD", PWD, ARGS, 1, "(return current directory)" }, - { "XPWD", PWD, ARGS, 1, "(return current directory)" }, - { "CDUP", CDUP, ARGS, 1, "(change to parent directory)" }, - { "XCUP", CDUP, ARGS, 1, "(change to parent directory)" }, - { "STOU", STOU, STR1, 1, "<sp> file-name" }, - { "SIZE", SIZE, OSTR, 1, "<sp> path-name" }, - { "MDTM", MDTM, OSTR, 1, "<sp> path-name" }, - - /* extensions from RFC2228 */ - { "AUTH", AUTH, STR1, 1, "<sp> auth-type" }, - { "ADAT", ADAT, STR1, 1, "<sp> auth-data" }, - { "PBSZ", PBSZ, ARGS, 1, "<sp> buffer-size" }, - { "PROT", PROT, STR1, 1, "<sp> prot-level" }, - { "CCC", CCC, ARGS, 1, "" }, - { "MIC", MIC, STR1, 1, "<sp> integrity command" }, - { "CONF", CONF, STR1, 1, "<sp> confidentiality command" }, - { "ENC", ENC, STR1, 1, "<sp> privacy command" }, - - /* RFC2389 */ - { "FEAT", FEAT, ARGS, 1, "" }, - { "OPTS", OPTS, ARGS, 1, "<sp> command [<sp> options]" }, - - { NULL, 0, 0, 0, 0 } -}; - -struct tab sitetab[] = { - { "UMASK", UMASK, ARGS, 1, "[ <sp> umask ]" }, - { "IDLE", IDLE, ARGS, 1, "[ <sp> maximum-idle-time ]" }, - { "CHMOD", CHMOD, NSTR, 1, "<sp> mode <sp> file-name" }, - { "HELP", HELP, OSTR, 1, "[ <sp> <string> ]" }, - - { "KAUTH", KAUTH, STR1, 1, "<sp> principal [ <sp> ticket ]" }, - { "KLIST", KLIST, ARGS, 1, "(show ticket file)" }, - { "KDESTROY", KDESTROY, ARGS, 1, "(destroy tickets)" }, - { "KRBTKFILE", KRBTKFILE, STR1, 1, "<sp> ticket-file" }, - { "AFSLOG", AFSLOG, OSTR, 1, "[<sp> cell]" }, - - { "LOCATE", LOCATE, STR1, 1, "<sp> globexpr" }, - { "FIND", LOCATE, STR1, 1, "<sp> globexpr" }, - - { "URL", URL, ARGS, 1, "?" }, - - { NULL, 0, 0, 0, 0 } -}; - -static struct tab * -lookup(struct tab *p, char *cmd) -{ - - for (; p->name != NULL; p++) - if (strcmp(cmd, p->name) == 0) - return (p); - return (0); -} - -/* - * ftpd_getline - a hacked up version of fgets to ignore TELNET escape codes. - */ -char * -ftpd_getline(char *s, int n) -{ - int c; - char *cs; - - cs = s; - - /* might still be data within the security MIC/CONF/ENC */ - if(ftp_command){ - strlcpy(s, ftp_command, n); - if (debug) - syslog(LOG_DEBUG, "command: %s", s); - return s; - } - while ((c = getc(stdin)) != EOF) { - c &= 0377; - if (c == IAC) { - if ((c = getc(stdin)) != EOF) { - c &= 0377; - switch (c) { - case WILL: - case WONT: - c = getc(stdin); - printf("%c%c%c", IAC, DONT, 0377&c); - fflush(stdout); - continue; - case DO: - case DONT: - c = getc(stdin); - printf("%c%c%c", IAC, WONT, 0377&c); - fflush(stdout); - continue; - case IAC: - break; - default: - continue; /* ignore command */ - } - } - } - *cs++ = c; - if (--n <= 0 || c == '\n') - break; - } - if (c == EOF && cs == s) - return (NULL); - *cs++ = '\0'; - if (debug) { - if (!guest && strncasecmp("pass ", s, 5) == 0) { - /* Don't syslog passwords */ - syslog(LOG_DEBUG, "command: %.5s ???", s); - } else { - char *cp; - int len; - - /* Don't syslog trailing CR-LF */ - len = strlen(s); - cp = s + len - 1; - while (cp >= s && (*cp == '\n' || *cp == '\r')) { - --cp; - --len; - } - syslog(LOG_DEBUG, "command: %.*s", len, s); - } - } -#ifdef XXX - fprintf(stderr, "%s\n", s); -#endif - return (s); -} - -static RETSIGTYPE -toolong(int signo) -{ - - reply(421, - "Timeout (%d seconds): closing control connection.", - ftpd_timeout); - if (logging) - syslog(LOG_INFO, "User %s timed out after %d seconds", - (pw ? pw -> pw_name : "unknown"), ftpd_timeout); - dologout(1); - SIGRETURN(0); -} - -static int -yylex(void) -{ - static int cpos, state; - char *cp, *cp2; - struct tab *p; - int n; - char c; - - for (;;) { - switch (state) { - - case CMD: - hasyyerrored = 0; - - signal(SIGALRM, toolong); - alarm((unsigned) ftpd_timeout); - if (ftpd_getline(cbuf, sizeof(cbuf)-1) == NULL) { - reply(221, "You could at least say goodbye."); - dologout(0); - } - alarm(0); -#ifdef HAVE_SETPROCTITLE - if (strncasecmp(cbuf, "PASS", 4) != 0) - setproctitle("%s: %s", proctitle, cbuf); -#endif /* HAVE_SETPROCTITLE */ - if ((cp = strchr(cbuf, '\r'))) { - *cp++ = '\n'; - *cp = '\0'; - } - if ((cp = strpbrk(cbuf, " \n"))) - cpos = cp - cbuf; - if (cpos == 0) - cpos = 4; - c = cbuf[cpos]; - cbuf[cpos] = '\0'; - strupr(cbuf); - p = lookup(cmdtab, cbuf); - cbuf[cpos] = c; - if (p != 0) { - if (p->implemented == 0) { - nack(p->name); - hasyyerrored = 1; - break; - } - state = p->state; - yylval.s = p->name; - return (p->token); - } - break; - - case SITECMD: - if (cbuf[cpos] == ' ') { - cpos++; - return (SP); - } - cp = &cbuf[cpos]; - if ((cp2 = strpbrk(cp, " \n"))) - cpos = cp2 - cbuf; - c = cbuf[cpos]; - cbuf[cpos] = '\0'; - strupr(cp); - p = lookup(sitetab, cp); - cbuf[cpos] = c; - if (p != 0) { - if (p->implemented == 0) { - state = CMD; - nack(p->name); - hasyyerrored = 1; - break; - } - state = p->state; - yylval.s = p->name; - return (p->token); - } - state = CMD; - break; - - case OSTR: - if (cbuf[cpos] == '\n') { - state = CMD; - return (CRLF); - } - /* FALLTHROUGH */ - - case STR1: - case ZSTR1: - dostr1: - if (cbuf[cpos] == ' ') { - cpos++; - if(state == OSTR) - state = STR2; - else - state++; - return (SP); - } - break; - - case ZSTR2: - if (cbuf[cpos] == '\n') { - state = CMD; - return (CRLF); - } - /* FALLTHROUGH */ - - case STR2: - cp = &cbuf[cpos]; - n = strlen(cp); - cpos += n - 1; - /* - * Make sure the string is nonempty and \n terminated. - */ - if (n > 1 && cbuf[cpos] == '\n') { - cbuf[cpos] = '\0'; - yylval.s = copy(cp); - cbuf[cpos] = '\n'; - state = ARGS; - return (STRING); - } - break; - - case NSTR: - if (cbuf[cpos] == ' ') { - cpos++; - return (SP); - } - if (isdigit((unsigned char)cbuf[cpos])) { - cp = &cbuf[cpos]; - while (isdigit((unsigned char)cbuf[++cpos])) - ; - c = cbuf[cpos]; - cbuf[cpos] = '\0'; - yylval.i = atoi(cp); - cbuf[cpos] = c; - state = STR1; - return (NUMBER); - } - state = STR1; - goto dostr1; - - case ARGS: - if (isdigit((unsigned char)cbuf[cpos])) { - cp = &cbuf[cpos]; - while (isdigit((unsigned char)cbuf[++cpos])) - ; - c = cbuf[cpos]; - cbuf[cpos] = '\0'; - yylval.i = atoi(cp); - cbuf[cpos] = c; - return (NUMBER); - } - switch (cbuf[cpos++]) { - - case '\n': - state = CMD; - return (CRLF); - - case ' ': - return (SP); - - case ',': - return (COMMA); - - case 'A': - case 'a': - return (A); - - case 'B': - case 'b': - return (B); - - case 'C': - case 'c': - return (C); - - case 'E': - case 'e': - return (E); - - case 'F': - case 'f': - return (F); - - case 'I': - case 'i': - return (I); - - case 'L': - case 'l': - return (L); - - case 'N': - case 'n': - return (N); - - case 'P': - case 'p': - return (P); - - case 'R': - case 'r': - return (R); - - case 'S': - case 's': - return (S); - - case 'T': - case 't': - return (T); - - } - break; - - default: - fatal("Unknown state in scanner."); - } - yyerror(NULL); - state = CMD; - return (0); - } -} - -/* ARGSUSED */ -void -yyerror(char *s) -{ - char *cp; - - if (hasyyerrored) - return; - - if ((cp = strchr(cbuf,'\n'))) - *cp = '\0'; - reply(500, "'%s': command not understood.", cbuf); - hasyyerrored = 1; -} - -static char * -copy(char *s) -{ - char *p; - - p = strdup(s); - if (p == NULL) - fatal("Ran out of memory."); - return p; -} - -static void -help(struct tab *ctab, char *s) -{ - struct tab *c; - int width, NCMDS; - char *t; - char buf[1024]; - - if (ctab == sitetab) - t = "SITE "; - else - t = ""; - width = 0, NCMDS = 0; - for (c = ctab; c->name != NULL; c++) { - int len = strlen(c->name); - - if (len > width) - width = len; - NCMDS++; - } - width = (width + 8) &~ 7; - if (s == 0) { - int i, j, w; - int columns, lines; - - lreply(214, "The following %scommands are recognized %s.", - t, "(* =>'s unimplemented)"); - columns = 76 / width; - if (columns == 0) - columns = 1; - lines = (NCMDS + columns - 1) / columns; - for (i = 0; i < lines; i++) { - strlcpy (buf, " ", sizeof(buf)); - for (j = 0; j < columns; j++) { - c = ctab + j * lines + i; - snprintf (buf + strlen(buf), - sizeof(buf) - strlen(buf), - "%s%c", - c->name, - c->implemented ? ' ' : '*'); - if (c + lines >= &ctab[NCMDS]) - break; - w = strlen(c->name) + 1; - while (w < width) { - strlcat (buf, - " ", - sizeof(buf)); - w++; - } - } - lreply(214, "%s", buf); - } - reply(214, "Direct comments to kth-krb-bugs@pdc.kth.se"); - return; - } - strupr(s); - c = lookup(ctab, s); - if (c == (struct tab *)0) { - reply(502, "Unknown command %s.", s); - return; - } - if (c->implemented) - reply(214, "Syntax: %s%s %s", t, c->name, c->help); - else - reply(214, "%s%-*s\t%s; unimplemented.", t, width, - c->name, c->help); -} - -static void -sizecmd(char *filename) -{ - switch (type) { - case TYPE_L: - case TYPE_I: { - struct stat stbuf; - if (stat(filename, &stbuf) < 0 || !S_ISREG(stbuf.st_mode)) - reply(550, "%s: not a plain file.", filename); - else - reply(213, "%lu", (unsigned long)stbuf.st_size); - break; - } - case TYPE_A: { - FILE *fin; - int c; - size_t count; - struct stat stbuf; - fin = fopen(filename, "r"); - if (fin == NULL) { - perror_reply(550, filename); - return; - } - if (fstat(fileno(fin), &stbuf) < 0 || !S_ISREG(stbuf.st_mode)) { - reply(550, "%s: not a plain file.", filename); - fclose(fin); - return; - } - - count = 0; - while((c=getc(fin)) != EOF) { - if (c == '\n') /* will get expanded to \r\n */ - count++; - count++; - } - fclose(fin); - - reply(213, "%lu", (unsigned long)count); - break; - } - default: - reply(504, "SIZE not implemented for Type %c.", "?AEIL"[type]); - } -} |