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Import byacc 20120115 Approved by: des (mentor)
2012-05-03 09:57:52 +00:00
/*
* Copyright (c) 1985, 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* @(#)ftpcmd.y 5.20.1.1 (Berkeley) 3/2/89
*/
/*
* Grammar for FTP commands.
* See RFC 959.
*/
%{
/* sccsid[] = "@(#)ftpcmd.y 5.20.1.1 (Berkeley) 3/2/89"; */
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/ftp.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
#include <ctype.h>
#include <pwd.h>
#include <setjmp.h>
#include <syslog.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>
#include <assert.h>
#ifdef YYBISON
int yylex(void);
static void yyerror(const char *);
#endif
extern struct sockaddr_in data_dest;
extern int logged_in;
extern struct passwd *pw;
extern int guest;
extern int logging;
extern int type;
extern int form;
extern int debug;
extern int timeout;
extern int maxtimeout;
extern int pdata;
extern char hostname[], remotehost[];
extern char proctitle[];
extern char *globerr;
extern int usedefault;
extern int transflag;
extern char tmpline[];
extern char **glob(char *);
extern char *renamefrom(char *);
extern void cwd(const char *);
extern void dologout(int);
extern void fatal(const char *);
extern void makedir(const char *);
extern void nack(const char *);
extern void pass(const char *);
extern void passive(void);
extern void pwd(void);
extern void removedir(char *);
extern void renamecmd(char *, char *);
extern void retrieve(const char *, const char *);
extern void send_file_list(const char *);
extern void statcmd(void);
extern void statfilecmd(const char *);
extern void store(char *, const char *, int);
extern void user(const char *);
extern void perror_reply(int, const char *, ...);
extern void reply(int, const char *, ...);
extern void lreply(int, const char *, ...);
static int cmd_type;
static int cmd_form;
static int cmd_bytesz;
char cbuf[512];
char *fromname;
struct tab {
const char *name;
short token;
short state;
short implemented; /* 1 if command is implemented */
const char *help;
};
static char * copy(const char *);
#ifdef YYBISON
static void sizecmd(char *filename);
static void help(struct tab *ctab, char *s);
struct tab cmdtab[];
struct tab sitetab[];
#endif
static void
yyerror(const char *msg)
{
perror(msg);
}
%}
%token
A B C E F I
L N P R S T
SP CRLF COMMA STRING NUMBER
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
UMASK IDLE CHMOD
LEXERR
%start cmd_list
%%
cmd_list: /* empty */
| cmd_list cmd
{
fromname = (char *) 0;
}
| cmd_list rcmd
;
cmd: USER SP username CRLF
{
user((char *) $3);
free((char *) $3);
}
| PASS SP password CRLF
{
pass((char *) $3);
free((char *) $3);
}
| PORT SP host_port CRLF
{
usedefault = 0;
if (pdata >= 0) {
(void) close(pdata);
pdata = -1;
}
reply(200, "PORT command successful.");
}
| PASV CRLF
{
passive();
}
| TYPE SP type_code CRLF
{
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
{
switch ($3) {
case STRU_F:
reply(200, "STRU F ok.");
break;
default:
reply(504, "Unimplemented STRU type.");
}
}
| MODE SP mode_code CRLF
{
switch ($3) {
case MODE_S:
reply(200, "MODE S ok.");
break;
default:
reply(502, "Unimplemented MODE type.");
}
}
| ALLO SP NUMBER CRLF
{
reply(202, "ALLO command ignored.");
}
| ALLO SP NUMBER SP R SP NUMBER CRLF
{
reply(202, "ALLO command ignored.");
}
| RETR check_login SP pathname CRLF
{
if ($2 && $4 != 0)
retrieve((char *) 0, (char *) $4);
if ($4 != 0)
free((char *) $4);
}
| STOR check_login SP pathname CRLF
{
if ($2 && $4 != 0)
store((char *) $4, "w", 0);
if ($4 != 0)
free((char *) $4);
}
| APPE check_login SP pathname CRLF
{
if ($2 && $4 != 0)
store((char *) $4, "a", 0);
if ($4 != 0)
free((char *) $4);
}
| NLST check_login CRLF
{
if ($2)
send_file_list(".");
}
| NLST check_login SP STRING CRLF
{
if ($2 && $4 != 0)
send_file_list((char *) $4);
if ($4 != 0)
free((char *) $4);
}
| LIST check_login CRLF
{
if ($2)
retrieve("/bin/ls -lgA", "");
}
| LIST check_login SP pathname CRLF
{
if ($2 && $4 != 0)
retrieve("/bin/ls -lgA %s", (char *) $4);
if ($4 != 0)
free((char *) $4);
}
| STAT check_login SP pathname CRLF
{
if ($2 && $4 != 0)
statfilecmd((char *) $4);
if ($4 != 0)
free((char *) $4);
}
| STAT CRLF
{
statcmd();
}
| DELE check_login SP pathname CRLF
{
if ($2 && $4 != 0)
remove((char *) $4);
if ($4 != 0)
free((char *) $4);
}
| RNTO SP pathname CRLF
{
if (fromname) {
renamecmd(fromname, (char *) $3);
free(fromname);
fromname = (char *) 0;
} else {
reply(503, "Bad sequence of commands.");
}
free((char *) $3);
}
| ABOR CRLF
{
reply(225, "ABOR command successful.");
}
| CWD check_login CRLF
{
if ($2)
cwd(pw->pw_dir);
}
| CWD check_login SP pathname CRLF
{
if ($2 && $4 != 0)
cwd((char *) $4);
if ($4 != 0)
free((char *) $4);
}
| HELP CRLF
{
help(cmdtab, (char *) 0);
}
| HELP SP STRING CRLF
{
register char *cp = (char *)$3;
if (strncasecmp(cp, "SITE", 4) == 0) {
cp = (char *)$3 + 4;
if (*cp == ' ')
cp++;
if (*cp)
help(sitetab, cp);
else
help(sitetab, (char *) 0);
} else
help(cmdtab, (char *) $3);
}
| NOOP CRLF
{
reply(200, "NOOP command successful.");
}
| MKD check_login SP pathname CRLF
{
if ($2 && $4 != 0)
makedir((char *) $4);
if ($4 != 0)
free((char *) $4);
}
| RMD check_login SP pathname CRLF
{
if ($2 && $4 != 0)
removedir((char *) $4);
if ($4 != 0)
free((char *) $4);
}
| PWD check_login CRLF
{
if ($2)
pwd();
}
| CDUP check_login CRLF
{
if ($2)
cwd("..");
}
| SITE SP HELP CRLF
{
help(sitetab, (char *) 0);
}
| SITE SP HELP SP STRING CRLF
{
help(sitetab, (char *) $5);
}
| SITE SP UMASK check_login CRLF
{
int oldmask;
if ($4) {
oldmask = umask(0);
(void) umask(oldmask);
reply(200, "Current UMASK is %03o", oldmask);
}
}
| SITE SP UMASK check_login SP octal_number CRLF
{
int oldmask;
if ($4) {
if (($6 == -1) || ($6 > 0777)) {
reply(501, "Bad UMASK value");
} else {
oldmask = umask($6);
reply(200,
"UMASK set to %03o (was %03o)",
$6, oldmask);
}
}
}
| SITE SP CHMOD check_login SP octal_number SP pathname CRLF
{
if ($4 && ($8 != 0)) {
if ($6 > 0777)
reply(501,
"CHMOD: Mode value must be between 0 and 0777");
else if (chmod((char *) $8, $6) < 0)
perror_reply(550, (char *) $8);
else
reply(200, "CHMOD command successful.");
}
if ($8 != 0)
free((char *) $8);
}
| SITE SP IDLE CRLF
{
reply(200,
"Current IDLE time limit is %d seconds; max %d",
timeout, maxtimeout);
}
| SITE SP IDLE SP NUMBER CRLF
{
if ($5 < 30 || $5 > maxtimeout) {
reply(501,
"Maximum IDLE time must be between 30 and %d seconds",
maxtimeout);
} else {
timeout = $5;
(void) alarm((unsigned) timeout);
reply(200,
"Maximum IDLE time set to %d seconds",
timeout);
}
}
| STOU check_login SP pathname CRLF
{
if ($2 && $4 != 0)
store((char *) $4, "w", 1);
if ($4 != 0)
free((char *) $4);
}
| SYST CRLF
{
#ifdef unix
#ifdef BSD
reply(215, "UNIX Type: L%d Version: BSD-%d",
NBBY, BSD);
#else /* BSD */
reply(215, "UNIX Type: L%d", NBBY);
#endif /* BSD */
#else /* unix */
reply(215, "UNKNOWN Type: L%d", NBBY);
#endif /* unix */
}
/*
* 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 check_login SP pathname CRLF
{
if ($2 && $4 != 0)
sizecmd((char *) $4);
if ($4 != 0)
free((char *) $4);
}
/*
* 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 check_login SP pathname CRLF
{
if ($2 && $4 != 0) {
struct stat stbuf;
if (stat((char *) $4, &stbuf) < 0)
perror_reply(550, "%s", (char *) $4);
else if ((stbuf.st_mode&S_IFMT) != S_IFREG) {
reply(550, "%s: not a plain file.",
(char *) $4);
} else {
register struct tm *t;
t = gmtime(&stbuf.st_mtime);
reply(213,
"%04d%02d%02d%02d%02d%02d",
1900 + t->tm_year,
t->tm_mon+1, t->tm_mday,
t->tm_hour, t->tm_min, t->tm_sec);
}
}
if ($4 != 0)
free((char *) $4);
}
| QUIT CRLF
{
reply(221, "Goodbye.");
dologout(0);
}
| error CRLF
{
yyerrok;
}
;
rcmd: RNFR check_login SP pathname CRLF
{
if ($2 && $4) {
fromname = renamefrom((char *) $4);
if (fromname == (char *) 0 && $4) {
free((char *) $4);
}
}
}
;
username: STRING
;
password: /* empty */
{
*(const char **)(&($$)) = "";
}
| STRING
;
byte_size: NUMBER
;
host_port: NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA
NUMBER COMMA NUMBER
{
register char *a, *p;
a = (char *)&data_dest.sin_addr;
a[0] = $1; a[1] = $3; a[2] = $5; a[3] = $7;
p = (char *)&data_dest.sin_port;
p[0] = $9; p[1] = $11;
data_dest.sin_family = AF_INET;
}
;
form_code: N
{
$$ = 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 && strncmp((char *) $1, "~", 1) == 0) {
*(char **)&($$) = *glob((char *) $1);
if (globerr != 0) {
reply(550, globerr);
$$ = 0;
}
free((char *) $1);
} else
$$ = $1;
}
;
pathstring: STRING
;
octal_number: NUMBER
{
register int ret, dec, multby, digit;
/*
* Convert a number that was read as decimal number
* to what it would be if it had been read as octal.
*/
dec = $1;
multby = 1;
ret = 0;
while (dec) {
digit = dec%10;
if (digit > 7) {
ret = -1;
break;
}
ret += digit * multby;
multby *= 8;
dec /= 10;
}
$$ = ret;
}
;
check_login: /* empty */
{
if (logged_in)
$$ = 1;
else {
reply(530, "Please login with USER and PASS.");
$$ = 0;
}
}
;
%%
#ifdef YYBYACC
extern int YYLEX_DECL();
#endif
extern jmp_buf errcatch;
static void upper(char *);
#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" },
{ "PASV", PASV, ARGS, 1, "(set server in passive mode)" },
{ "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, 0, "(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" },
{ 0, 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> ]" },
{ 0, 0, 0, 0, 0 }
};
static struct tab *
lookup(struct tab *p, char *cmd)
{
for (; p->name != 0; p++)
if (strcmp(cmd, p->name) == 0)
return (p);
return (0);
}
#include <arpa/telnet.h>
/*
* get_line - a hacked up version of fgets to ignore TELNET escape codes.
*/
static char *
get_line(char *s, int n, FILE *iop)
{
register int c;
register char *cs;
cs = s;
/* tmpline may contain saved command from urgent mode interruption */
for (c = 0; tmpline[c] != '\0' && --n > 0; ++c) {
*cs++ = tmpline[c];
if (tmpline[c] == '\n') {
*cs = '\0';
if (debug)
syslog(LOG_DEBUG, "command: %s", s);
tmpline[0] = '\0';
return(s);
}
if (c == 0)
tmpline[0] = '\0';
}
while ((c = getc(iop)) != EOF) {
c &= 0377;
if (c == IAC) {
if ((c = getc(iop)) != EOF) {
c &= 0377;
switch (c) {
case WILL:
case WONT:
c = getc(iop);
printf("%c%c%c", IAC, DONT, 0377&c);
(void) fflush(stdout);
continue;
case DO:
case DONT:
c = getc(iop);
printf("%c%c%c", IAC, WONT, 0377&c);
(void) fflush(stdout);
continue;
case IAC:
break;
default:
continue; /* ignore command */
}
}
}
*cs++ = c;
if (--n <= 0 || c == '\n')
break;
}
if (c == EOF && cs == s)
return (0);
*cs = '\0';
if (debug)
syslog(LOG_DEBUG, "command: %s", s);
return (s);
}
static void
toolong(int sig)
{
time_t now;
(void) sig;
reply(421,
"Timeout (%d seconds): closing control connection.", timeout);
(void) time(&now);
if (logging) {
syslog(LOG_INFO,
"User %s timed out after %d seconds at %s",
(pw ? pw -> pw_name : "unknown"), timeout, ctime(&now));
}
dologout(1);
}
int
yylex(void)
{
static int cpos, state;
register char *cp, *cp2;
register struct tab *p;
int n;
char c;
for (;;) {
switch (state) {
case CMD:
(void) signal(SIGALRM, toolong);
(void) alarm((unsigned) timeout);
if (get_line(cbuf, sizeof(cbuf)-1, stdin) == 0) {
reply(221, "You could at least say goodbye.");
dologout(0);
}
(void) alarm(0);
#ifdef SETPROCTITLE
if (strncasecmp(cbuf, "PASS", 4) != 0)
setproctitle("%s: %s", proctitle, cbuf);
#endif /* 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';
upper(cbuf);
p = lookup(cmdtab, cbuf);
cbuf[cpos] = c;
if (p != 0) {
if (p->implemented == 0) {
nack(p->name);
longjmp(errcatch,0);
/* NOTREACHED */
}
state = p->state;
*(const char **)(&yylval) = 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';
upper(cp);
p = lookup(sitetab, cp);
cbuf[cpos] = c;
if (p != 0) {
if (p->implemented == 0) {
state = CMD;
nack(p->name);
longjmp(errcatch,0);
/* NOTREACHED */
}
state = p->state;
*(const char **)(&yylval) = 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';
*(char **)&yylval = copy(cp);
cbuf[cpos] = '\n';
state = ARGS;
return (STRING);
}
break;
case NSTR:
if (cbuf[cpos] == ' ') {
cpos++;
return (SP);
}
if (isdigit(cbuf[cpos])) {
cp = &cbuf[cpos];
while (isdigit(cbuf[++cpos]))
;
c = cbuf[cpos];
cbuf[cpos] = '\0';
yylval = atoi(cp);
cbuf[cpos] = c;
state = STR1;
return (NUMBER);
}
state = STR1;
goto dostr1;
case ARGS:
if (isdigit(cbuf[cpos])) {
cp = &cbuf[cpos];
while (isdigit(cbuf[++cpos]))
;
c = cbuf[cpos];
cbuf[cpos] = '\0';
yylval = 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((char *) 0);
state = CMD;
longjmp(errcatch,0);
}
}
static void
upper(char *s)
{
while (*s != '\0') {
if (islower(*s))
*s = toupper(*s);
s++;
}
}
static char *
copy(const char *s)
{
char *p;
p = (char * )malloc(strlen(s) + 1);
if (p == 0)
fatal("Ran out of memory.");
else
(void) strcpy(p, s);
return (p);
}
static void
help(struct tab *ctab, char *s)
{
register struct tab *c;
register int width, NCMDS;
const char *help_type;
if (ctab == sitetab)
help_type = "SITE ";
else
help_type = "";
width = 0, NCMDS = 0;
for (c = ctab; c->name != 0; c++) {
int len = strlen(c->name);
if (len > width)
width = len;
NCMDS++;
}
width = (width + 8) &~ 7;
if (s == 0) {
register int i, j, w;
int columns, lines;
lreply(214, "The following %scommands are recognized %s.",
help_type, "(* =>'s unimplemented)");
columns = 76 / width;
if (columns == 0)
columns = 1;
lines = (NCMDS + columns - 1) / columns;
for (i = 0; i < lines; i++) {
printf(" ");
for (j = 0; j < columns; j++) {
c = ctab + j * lines + i;
assert(c->name != 0);
printf("%s%c", c->name,
c->implemented ? ' ' : '*');
if (c + lines >= &ctab[NCMDS])
break;
w = strlen(c->name) + 1;
while (w < width) {
putchar(' ');
w++;
}
}
printf("\r\n");
}
(void) fflush(stdout);
reply(214, "Direct comments to ftp-bugs@%s.", hostname);
return;
}
upper(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", help_type, c->name, c->help);
else
reply(214, "%s%-*s\t%s; unimplemented.", help_type, 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 ||
(stbuf.st_mode&S_IFMT) != S_IFREG)
reply(550, "%s: not a plain file.", filename);
else
#ifdef HAVE_LONG_LONG
reply(213, "%llu", (long long) stbuf.st_size);
#else
reply(213, "%lu", stbuf.st_size);
#endif
break;}
case TYPE_A: {
FILE *fin;
register int c, count;
struct stat stbuf;
fin = fopen(filename, "r");
if (fin == 0) {
perror_reply(550, filename);
return;
}
if (fstat(fileno(fin), &stbuf) < 0 ||
(stbuf.st_mode&S_IFMT) != S_IFREG) {
reply(550, "%s: not a plain file.", filename);
(void) fclose(fin);
return;
}
count = 0;
while((c=getc(fin)) != EOF) {
if (c == '\n') /* will get expanded to \r\n */
count++;
count++;
}
(void) fclose(fin);
reply(213, "%ld", count);
break;}
default:
reply(504, "SIZE not implemented for Type %c.", "?AEIL"[type]);
}
}
Reference in New Issue Copy Permalink