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phunix/commands/ftpd200/file.c
Jorrit Herder 7279bb68ef Applied MINIX 2.0.4 pathes provides by Al Woodhull.
2005-06-17 13:00:04 +00:00

1253 lines
23 KiB
C
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/* file.c Copyright 1992-2000 by Michael Temari All Rights Reserved
*
* This file is part of ftpd.
*
* This file handles:
*
* ALLO APPE CDUP CWD DELE LIST MDTM MODE MKD NLST PWD REST RETR
* RMD RNFR RNTO SITE SIZE STAT STOR STOU STRU SYST TYPE
*
* 01/25/96 Initial Release Michael Temari
* 03/09/00 Michael Temari, <Michael@TemWare.Com>
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <net/hton.h>
#include <net/gen/in.h>
#include <net/gen/inet.h>
#include <net/gen/tcp.h>
#include "ftpd.h"
#include "access.h"
#include "file.h"
#include "net.h"
_PROTOTYPE(static int fdxcmd, (int cmd, char *arg));
_PROTOTYPE(static int endfdxcmd, (int fd));
_PROTOTYPE(static int asciisize, (char *filename, unsigned long *filesize));
_PROTOTYPE(static int cnvtfile, (char *name, char **name2));
_PROTOTYPE(static int procfile, (char *name));
_PROTOTYPE(static unsigned long fsize, (char *fname));
_PROTOTYPE(static int sendfile, (char *name, int xmode));
_PROTOTYPE(static int recvfile, (char *name, int xmode));
_PROTOTYPE(static char *uniqname, (void));
_PROTOTYPE(static int docrc, (char *buff, int xmode));
_PROTOTYPE(static int dofdet, (char *buff));
_PROTOTYPE(static char *path, (char *fname));
#define SEND_FILE 0
#define SEND_NLST 1
#define SEND_LIST 2
#define RECV_FILE 0
#define RECV_APND 1
#define RECV_UNIQ 2
#define CNVT_ERROR 0
#define CNVT_NONE 1
#define CNVT_TAR 2
#define CNVT_TAR_Z 3
#define CNVT_COMP 4
#define CNVT_TAR_GZ 5
#define CNVT_GZIP 6
#define CNVT_UNCOMP 7
#define PROG_FTPDSH "ftpdsh"
#define CMD_NLST 1
#define CMD_LIST 2
#define CMD_CRC 3
static char *msg550 = "550 %s %s.\r\n";
static unsigned long file_restart = 0;
static char rnfr[256];
static char buffer[8192];
static char bufout[8192];
static cmdpid = -1;
/* allocate, we don't need no stink'n allocate */
int doALLO(buff)
char *buff;
{
printf("202 ALLO command not needed at this site.\r\n");
return(GOOD);
}
/* append to a file if it exists */
int doAPPE(buff)
char *buff;
{
return(recvfile(buff, RECV_APND));
}
/* change to parent directory */
int doCDUP(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
return(doCWD(".."));
}
/* change directory */
int doCWD(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
if(chdir(buff))
printf(msg550, buff, strerror(errno));
else {
showmsg("250", ".ftpd_msg");
printf("250 %s command okay.\r\n", line);
}
return(GOOD);
}
/* remove a file */
int doDELE(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
if(anonymous) {
printf("550 Command not allowed for anonymous user\r\n");
return(GOOD);
}
if(unlink(buff))
printf(msg550, buff, strerror(errno));
else {
printf("250 File \"%s\" deleted.\r\n", buff);
logit("DELE", path(buff));
}
return(GOOD);
}
/* directory listing */
int doLIST(buff)
char *buff;
{
file_restart = 0;
return(sendfile(buff, SEND_LIST));
}
/* file modification time, btw when will this be put into an RFC */
int doMDTM(buff)
char *buff;
{
struct stat st;
struct tm *t;
if(ChkLoggedIn())
return(GOOD);
if(stat(buff, &st)) {
printf(msg550, buff, strerror(errno));
return(GOOD);
}
if((st.st_mode & S_IFMT) != S_IFREG) {
printf("550 Not a regular file.\r\n");
return(GOOD);
}
t = gmtime(&st.st_mtime);
printf("215 %04d%02d%02d%02d%02d%02d\r\n",
t->tm_year+1900, t->tm_mon+1, t->tm_mday,
t->tm_hour, t->tm_min, t->tm_sec);
return(GOOD);
}
/* mode */
int doMODE(buff)
char *buff;
{
switch(*buff) {
case 'b':
case 'B':
printf("200 Mode set to %c.\r\n", *buff);
mode = MODE_B;
break;
case 's':
case 'S':
printf("200 Mode set to %c.\r\n", *buff);
mode = MODE_S;
break;
default:
printf("501 Unknown mode %c.\r\n", *buff);
}
return(GOOD);
}
/* make a directory */
int doMKD(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
if(anonymous) {
printf("550 Command not allowed for anonymous user\r\n");
return(GOOD);
}
if(mkdir(buff, 0777))
printf(msg550, buff, strerror(errno));
else {
printf("257 \"%s\" directory created.\r\n", buff);
logit("MKD ", path(buff));
}
return(GOOD);
}
/* name listing */
int doNLST(buff)
char *buff;
{
file_restart = 0;
return(sendfile(buff, SEND_NLST));
}
/* where are we */
int doPWD(buff)
char *buff;
{
char dir[128];
if(ChkLoggedIn())
return(GOOD);
if(getcwd(dir, sizeof(dir)) == (char *)NULL)
printf(msg550, buff, strerror(errno));
else
printf("257 \"%s\" is current directory.\r\n", dir);
return(GOOD);
}
/* restart command */
int doREST(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
file_restart = atol(buff);
printf("350 Next file transfer will restart at %lu.\r\n", file_restart);
return(GOOD);
}
/* they want a file */
int doRETR(buff)
char *buff;
{
return(sendfile(buff, SEND_FILE));
}
/* remove a directory */
int doRMD(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
if(anonymous) {
printf("550 Command not allowed for anonymous user\r\n");
return(GOOD);
}
if(rmdir(buff))
printf(msg550, buff, strerror(errno));
else {
printf("250 Directory \"%s\" deleted.\r\n", buff);
logit("RMD ", path(buff));
}
return(GOOD);
}
/* rename from */
int doRNFR(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
if(anonymous) {
printf("550 Command not allowed for anonymous user\r\n");
return(GOOD);
}
strncpy(rnfr, buff, sizeof(rnfr));
rnfr[sizeof(rnfr)-1] = '\0';
printf("350 Got RNFR waiting for RNTO.\r\n");
return(GOOD);
}
/* rename to */
int doRNTO(buff)
char *buff;
{
if(ChkLoggedIn())
return(GOOD);
if(anonymous) {
printf("550 Command not allowed for anonymous user\r\n");
return(GOOD);
}
if(rnfr[0] == '\0') {
printf("550 Rename failed.\r\n");
return(GOOD);
}
if(rename(rnfr, buff) < 0)
printf("550 Rename failed. Error %s\r\n", strerror(errno));
else {
printf("250 Renamed %s to %s.\r\n", rnfr, buff);
logit("RNFR", path(rnfr));
logit("RNTO", path(buff));
}
rnfr[0] = '\0';
return(GOOD);
}
/* xmode = 0 for multiline crc, xmode <> 0 for single file single line crc */
static int docrc(buff, xmode)
char *buff;
int xmode;
{
unsigned short cs;
long fs;
int fd;
int s;
char *p;
if((fd = fdxcmd(CMD_CRC, buff)) < 0) {
printf("501 Could not obtain CRC.\r\n");
return(GOOD);
}
if(xmode == 0)
printf("202-SITE CRC \"%s\"\r\n", buff);
while(1) {
p = buffer;
while(1) {
if((s = read(fd, p, 1)) != 1) {
if(xmode == 0)
printf("202 SITE CRC DONE.\r\n");
else
printf("501 Could not obtain CRC.\r\n");
endfdxcmd(fd);
return(GOOD);
}
if(*p == '\n') {
*p++ = '\r';
*p++ = '\n';
*p = '\0';
break;
}
p++;
}
if(xmode != 0)
break;
printf(" %s", buffer);
}
cs = atoi(buffer);
fs = atol(buffer+6);
printf("202 CRC %05u %ld.\r\n", cs, fs);
endfdxcmd(fd);
return(GOOD);
}
/* site specific */
int doSITE(buff)
char *buff;
{
char *args;
if(ChkLoggedIn())
return(GOOD);
strncpy(line, buff, sizeof(line));
line[sizeof(line)-1] = '\0';
cvtline(&args);
if(!strcmp(line, "CRC") || !strcmp(line, "CCRC"))
return(docrc(args, strcmp(line, "CRC")));
if(!strcmp(line, "FDET"))
return(dofdet(args));
printf("501 Unknown SITE command %s.\r\n", line);
return(GOOD);
}
static unsigned long fsize(fname)
char *fname;
{
struct stat st;
unsigned long fs = 0L;
if(stat(fname, &st))
return(fs);
if((st.st_mode & S_IFMT) != S_IFREG)
return(fs);
if(type == TYPE_A)
return(fs);
fs = st.st_size;
return(fs);
}
/* file size, btw when will this be put into an RFC */
int doSIZE(buff)
char *buff;
{
struct stat st;
unsigned long filesize;
if(ChkLoggedIn())
return(GOOD);
if(stat(buff, &st)) {
printf(msg550, buff, strerror(errno));
return(GOOD);
}
if((st.st_mode & S_IFMT) != S_IFREG) {
printf("550 Not a regular file.\r\n");
return(GOOD);
}
filesize = st.st_size;
if(type == TYPE_A)
if(asciisize(buff, &filesize))
return(GOOD);
printf("215 %lu\r\n", filesize);
return(GOOD);
}
/* server status, or file status */
int doSTAT(buff)
char *buff;
{
time_t now;
struct tm *tm;
int fd;
int s;
if(!*buff) {
(void) time(&now);
tm = localtime(&now);
printf("211-%s(%s:%u) FTP server status:\r\n",
myhostname, inet_ntoa(myipaddr), ntohs(myport));
printf(" Version %s ", FtpdVersion);
printf("%s, %02d %s %d %02d:%02d:%02d %s\r\n", days[tm->tm_wday],
tm->tm_mday, months[tm->tm_mon], 1900+tm->tm_year,
tm->tm_hour, tm->tm_min, tm->tm_sec, tzname[tm->tm_isdst]);
printf(" Connected to %s:%u\r\n", inet_ntoa(rmtipaddr), ntohs(rmtport));
if(!loggedin)
printf(" Not logged in\r\n");
else
printf(" Logged in %s\r\n", username);
printf(" MODE: %s\r\n",(mode == MODE_B) ? "Block" : "Stream");
printf(" TYPE: %s\r\n",(type == TYPE_A) ? "Ascii" : "Binary");
printf("211 End of status\r\n");
return(GOOD);
}
if(ChkLoggedIn())
return(GOOD);
printf("211-Status of %s:\r\n", buff);
if((fd = fdxcmd(CMD_LIST, buff)) < 0)
printf(" Could not retrieve status");
else {
while((s = read(fd, buffer, 1)) == 1) {
if(*buffer == '\n')
printf("\r\n");
else
printf("%c", *buffer);
}
endfdxcmd(fd);
}
printf("211 End of status\r\n");
return(GOOD);
}
/* hey look, we're getting a file */
int doSTOR(buff)
char *buff;
{
return(recvfile(buff, RECV_FILE));
}
/* hey, get a file unique */
int doSTOU(buff)
char *buff;
{
return(recvfile(buff, RECV_UNIQ));
}
/* structure */
int doSTRU(buff)
char *buff;
{
switch(*buff) {
case 'f':
case 'F':
printf("200 Structure set to %c.\r\n", *buff);
break;
default:
printf("501 Unknown structure %c.\r\n", *buff);
}
return(GOOD);
}
/* we're UNIX and proud of it! */
int doSYST(buff)
char *buff;
{
printf("215 UNIX Type: L8\r\n");
return(GOOD);
}
/* change transfer type */
int doTYPE(buff)
char *buff;
{
if(*(buff+1) != '\0') {
printf("501 Syntax error in parameters.\r\n");
return(GOOD);
}
switch(*buff) {
case 'A':
case 'a':
type = TYPE_A;
printf("200 Type set to A.\r\n");
break;
case 'I':
case 'i':
type = TYPE_I;
printf("200 Type set to I.\r\n");
break;
default:
printf("501 Invalid type %c.\r\n", *buff);
}
return(GOOD);
}
static int fdxcmd(cmd, arg)
int cmd;
char *arg;
{
char xcmd[3];
char *argv[5];
int fds[2];
char *smallenv[] = { "PATH=/bin:/usr/bin:/usr/local/bin", NULL, NULL };
if((smallenv[1] = getenv("TZ")) != NULL) smallenv[1] -= 3; /* ouch... */
sprintf(xcmd, "%d", cmd);
argv[0] = PROG_FTPDSH;
argv[1] = xcmd;
argv[2] = arg;
argv[3] = (char *)NULL;
if(pipe(fds) < 0)
return(-1);
if((cmdpid = fork()) < 0) {
close(fds[0]);
close(fds[1]);
return(-1);
}
if(cmdpid == 0) { /* Child */
close(fds[0]);
close(0);
open("/dev/null", O_RDONLY);
dup2(fds[1], 1);
dup2(fds[1], 2);
close(fds[1]);
sprintf(argv[0], "/bin/%s", PROG_FTPDSH);
execve(argv[0], argv, smallenv);
sprintf(argv[0], "/usr/bin/%s", PROG_FTPDSH);
execve(argv[0], argv, smallenv);
sprintf(argv[0], "/usr/local/bin/%s", PROG_FTPDSH);
execve(argv[0], argv, smallenv);
exit(0);
}
close(fds[1]);
return(fds[0]);
}
/* Same as close if not cmd child started */
static int endfdxcmd(fd)
int fd;
{
int s;
int cs;
close(fd);
if(cmdpid == -1)
return(0);
s = waitpid(cmdpid, &cs, 0);
cmdpid = -1;
return(0);
}
/* returns -1 = size could not be determined, */
/* 0 = size determined and in filesize */
static int asciisize(filename, filesize)
char *filename;
unsigned long *filesize;
{
unsigned long count;
int fd;
char *p, *pp;
int cnt;
if((fd = open(filename, O_RDONLY)) < 0) {
printf(msg550, filename, strerror(errno));
return(-1);
}
count = 0;
while((cnt = read(fd, buffer, sizeof(buffer))) > 0) {
count += cnt;
p = buffer;
while(cnt > 0)
if((pp = memchr(p, '\n', cnt)) != (char *)NULL) {
count++;
cnt = cnt - 1 - (pp - p);
p = pp + 1;
} else
break;
}
if(cnt == 0) {
*filesize = count;
close(fd);
return(0);
}
printf(msg550, filename, strerror(errno));
close(fd);
return(-1);
}
/* see if we need to run a command to convert the file */
static int cnvtfile(name, name2)
char *name;
char **name2;
{
struct stat st;
static char fname[256];
char *p;
int cmode;
if(!stat(name, &st)) /* file exists can't be a conversion */
if((st.st_mode & S_IFMT) != S_IFREG) { /* must be regular file */
printf("550 Not a regular file.\r\n");
return(CNVT_ERROR);
} else
return(CNVT_NONE);
if(errno != ENOENT) { /* doesn't exist is okay, others are not */
printf(msg550, name, strerror(errno));
return(CNVT_ERROR);
}
/* find out what kind of conversion */
strncpy(fname, name, sizeof(fname));
fname[sizeof(fname)-1] = '\0';
p = fname + strlen(fname);
cmode = CNVT_ERROR;
while(p > fname && cmode == CNVT_ERROR) {
if(*p == '.') {
if(!strcmp(p, ".tar"))
cmode = CNVT_TAR;
else
if(!strcmp(p, ".tar.Z"))
cmode = CNVT_TAR_Z;
else
if(!strcmp(p, ".Z"))
cmode = CNVT_COMP;
else
if(!strcmp(p, ".tar.gz"))
cmode = CNVT_TAR_GZ;
else
if(!strcmp(p, ".gz"))
cmode = CNVT_GZIP;
if (cmode != CNVT_ERROR) {
/* is there a file to convert? */
*p = '\0';
if (!stat(fname, &st)) break;
*p = '.';
cmode = CNVT_ERROR;
}
}
p--;
}
if(cmode == CNVT_ERROR) {
printf(msg550, fname, strerror(errno));
return(CNVT_ERROR);
}
if(cmode == CNVT_COMP || cmode == CNVT_GZIP || cmode == CNVT_UNCOMP)
if((st.st_mode & S_IFMT) != S_IFREG) {
printf("550 Not a regular file.\r\n");
return(CNVT_ERROR);
}
*name2 = fname;
return(cmode);
}
static int procfile(name)
char *name;
{
int cmd;
int fd;
char *name2;
cmd = cnvtfile(name, &name2);
switch(cmd) {
case CNVT_TAR:
fd = fdxcmd(cmd + 10, name2);
break;
case CNVT_TAR_Z:
fd = fdxcmd(cmd + 10, name2);
break;
case CNVT_COMP:
fd = fdxcmd(cmd + 10, name2);
break;
case CNVT_TAR_GZ:
fd = fdxcmd(cmd + 10, name2);
break;
case CNVT_GZIP:
fd = fdxcmd(cmd + 10, name2);
break;
case CNVT_UNCOMP:
fd = fdxcmd(cmd + 10, name2);
break;
case CNVT_NONE:
fd = open(name, O_RDONLY);
break;
case CNVT_ERROR:
default:
return(-1);
}
if(fd < 0)
printf(msg550, name, strerror(errno));
return(fd);
}
/* oh no, they're taking a file */
static int sendfile(name, xmode)
char *name;
int xmode;
{
char *fname;
int fd, s;
time_t datastart, dataend;
unsigned long datacount;
long kbs;
char c;
char *p;
char *op, *ope;
off_t sp;
int doascii;
unsigned long fs;
char block[3];
if(ChkLoggedIn())
return(GOOD);
switch(xmode) {
case SEND_NLST:
fname = "NLST";
fd = fdxcmd(CMD_NLST, name);
if(fd < 0)
printf(msg550, name, strerror(errno));
break;
case SEND_LIST:
fname = "LIST";
fd = fdxcmd(CMD_LIST, name);
if(fd < 0)
printf(msg550, name, strerror(errno));
break;
default:
fname = name;
fd = procfile(name);
if(fd < 0)
logit("FAIL", path(fname));
else
logit("SEND", path(fname));
}
if(fd < 0)
return(GOOD);
/* set file position at approriate spot */
if(file_restart) {
if(type == TYPE_A) {
sp = 0;
while(sp < file_restart) {
sp++;
s = read(fd, buffer, 1);
if(s < 0) {
printf(msg550, fname, strerror(errno));
endfdxcmd(fd);
file_restart = 0;
return(GOOD);
}
if(s == 0) break;
if(*buffer == '\n')
sp++;
}
} else {
sp = lseek(fd, file_restart, SEEK_SET);
if(sp == -1) {
printf(msg550, fname, strerror(errno));
endfdxcmd(fd);
file_restart = 0;
return(GOOD);
}
}
if(sp != file_restart) {
printf("550 File restart point error. %lu not %lu\r\n", sp, file_restart);
endfdxcmd(fd);
file_restart = 0;
return(GOOD);
}
}
file_restart = 0;
fs = fsize(fname);
if(fs == 0L)
printf("%03d File %s okay. Opening data connection.\r\n",
ftpdata_fd >= 0 ? 125 : 150, fname);
else
printf("%03d Opening %s mode data connection for %s (%ld bytes).\r\n",
ftpdata_fd >= 0 ? 125 : 150,
type == TYPE_A ? "ASCII" : "BINARY",
fname, fs);
fflush(stdout);
#ifdef DEBUG
fprintf(logfile, "After 125/150 b4 DataConnect\n");
fflush(logfile);
#endif
if(DataConnect()) {
endfdxcmd(fd);
return(GOOD);
}
#ifdef DEBUG
fprintf(logfile, "After DataConnect\n");
fflush(logfile);
fprintf(logfile, "ftpd: parent %d start sendfile \n", getpid());
fflush(logfile);
#endif
/* start transfer */
doascii = (type == TYPE_A) ||
((xmode == SEND_LIST) || (xmode == SEND_NLST)); /* per RFC1123 4.1.2.7 */
datacount = 0;
time(&datastart);
op = bufout; ope = bufout + sizeof(bufout) - 3;
while((s = read(fd, buffer, sizeof(buffer))) > 0) {
#ifdef DEBUG
fprintf(logfile, "sendfile read %d\n", s); fflush(logfile);
#endif
datacount += s;
if(doascii) {
p = buffer;
while(s-- > 0) {
c = *p++;
if(c == '\n') {
*op++ = '\r';
datacount++;
}
*op++ = c;
if(op >= ope) {
if(mode == MODE_B) {
block[0] = '\0';
*(u16_t *)&block[1] = htons(op - bufout);
write(ftpdata_fd, block, sizeof(block));
}
write(ftpdata_fd, bufout, op - bufout);
op = bufout;
}
}
} else {
if(mode == MODE_B) {
block[0] = '\0';
*(u16_t *)&block[1] = htons(s);
write(ftpdata_fd, block, sizeof(block));
}
s = write(ftpdata_fd, buffer, s);
}
}
if(op > bufout) {
if(mode == MODE_B) {
block[0] = MODE_B_EOF;
*(u16_t *)&block[1] = htons(op - bufout);
write(ftpdata_fd, block, sizeof(block));
}
write(ftpdata_fd, bufout, op - bufout);
} else
if(mode == MODE_B) {
block[0] = MODE_B_EOF;
*(u16_t *)&block[1] = htons(0);
write(ftpdata_fd, block, sizeof(block));
}
time(&dataend);
#ifdef DEBUG
fprintf(logfile, "ftpd: parent %d end sendfile \n", getpid());
fflush(logfile);
#endif
endfdxcmd(fd);
if(mode != MODE_B) {
close(ftpdata_fd);
ftpdata_fd = -1;
}
if(dataend == datastart) dataend++;
kbs = (datacount * 100 / (dataend - datastart)) / 1024;
if(s < 0)
printf("451 Transfer aborted.\r\n");
else
printf("%03d Transfer finished successfully. %ld.%02d KB/s\r\n",
mode == MODE_B ? 250 : 226,
(long)(kbs / 100), (int)(kbs % 100));
return(GOOD);
}
static int recvfile(name, xmode)
char *name;
int xmode;
{
char *fname;
time_t datastart, dataend;
unsigned long datacount;
long kbs;
char c;
char *p;
char *op, *ope;
int fd, oflag;
int s;
int gotcr;
off_t sp;
char block[3];
unsigned short cnt;
if(ChkLoggedIn())
return(GOOD);
fname = name;
switch(xmode) {
case RECV_APND:
oflag = O_WRONLY | O_APPEND;
break;
case RECV_UNIQ:
fname = uniqname();
oflag = O_WRONLY | O_CREAT;
break;
default:
oflag = O_WRONLY | O_CREAT | O_TRUNC;
}
if(file_restart)
oflag = O_RDWR;
fd = open(fname, oflag, (anonymous ? 0000:0600));
if(fd < 0) {
printf(msg550, fname, strerror(errno));
return(GOOD);
}
/* log the received file */
logit("RECV", path(fname));
/* set file position at approriate spot */
if(file_restart) {
if(type == TYPE_A) {
sp = 0;
while(sp < file_restart) {
sp++;
s = read(fd, buffer, 1);
if(s < 0) {
printf(msg550, fname, strerror(errno));
close(fd);
file_restart = 0;
return(GOOD);
}
if(s == 0) break;
if(*buffer == '\n')
sp++;
}
} else {
sp = lseek(fd, file_restart, SEEK_SET);
if(sp == -1) {
printf(msg550, fname, strerror(errno));
close(fd);
file_restart = 0;
return(GOOD);
}
}
if(sp != file_restart) {
printf("550 File restart point error. %lu not %lu\r\n", sp, file_restart);
close(fd);
file_restart = 0;
return(GOOD);
}
}
file_restart = 0;
if(xmode == RECV_UNIQ)
printf("%03d FILE: %s\r\n",
ftpdata_fd >= 0 ? 125 : 150, fname); /* per RFC1123 4.1.2.9 */
else
printf("%03d File %s okay. Opening data connection.\r\n",
ftpdata_fd >= 0 ? 125 : 150, fname);
fflush(stdout);
if(DataConnect()) {
close(fd);
return(GOOD);
}
#ifdef DEBUG
fprintf(logfile, "ftpd: parent %d start recvfile \n", getpid());
fflush(logfile);
#endif
/* start receiving file */
datacount = 0;
gotcr = 0;
op = bufout; ope = bufout + sizeof(bufout) - 3;
cnt = 0;
time(&datastart);
while(1) {
if(mode != MODE_B)
cnt = sizeof(buffer);
else
if(cnt == 0) {
s = read(ftpdata_fd, block, sizeof(block));
cnt = ntohs(*(u16_t *)&block[1]);
s = 0;
if(cnt == 0 && block[0] & MODE_B_EOF)
break;
}
s = read(ftpdata_fd, buffer, cnt > sizeof(buffer) ? sizeof(buffer) : cnt);
if(s <= 0) break;
cnt -= s;
datacount += (long)s;
if(type == TYPE_A) {
p = buffer;
while(s-- > 0) {
c = *p++;
if(gotcr) {
gotcr = 0;
if(c != '\n')
*op++ = '\r';
}
if(c == '\r')
gotcr = 1;
else
*op++ = c;
if(op >= ope) {
write(fd, bufout, op - bufout);
op = bufout;
}
}
} else
write(fd, buffer, s);
if(cnt == 0 && mode == MODE_B && block[0] & MODE_B_EOF) {
s = 0;
break;
}
}
if(gotcr)
*op++ = '\r';
if(op > bufout)
write(fd, bufout, op - bufout);
time(&dataend);
#ifdef DEBUG
fprintf(logfile, "ftpd: parent %d end recvfile \n", getpid());
fflush(logfile);
#endif
close(fd);
if(mode != MODE_B) {
close(ftpdata_fd);
ftpdata_fd = -1;
}
if(dataend == datastart) dataend++;
kbs = (datacount * 100 / (dataend - datastart)) / 1024;
if((mode == MODE_B && cnt != 0) || s != 0)
printf("451 Transfer aborted.\r\n");
else {
printf("%03d Transfer finished successfully. ",
mode == MODE_B ? 250 : 226);
if(xmode == RECV_UNIQ)
printf("Unique file %s. ", fname);
printf("%ld.%02d KB/s\r\n", (long)(kbs / 100), (int)(kbs % 100));
}
return(GOOD);
}
static char *uniqname()
{
static char uniq[32];
int i;
struct stat st;
for(i = 0; i < 1000; i++) {
sprintf(uniq, "ftpd%d%d", getpid(), i);
if(stat(uniq, &st) == -1)
return(uniq);
}
return(uniq);
}
static char *spath[256];
static char *path(fname)
char *fname;
{
char dir[128];
if(getcwd(dir, sizeof(dir)) == (char *)NULL)
sprintf(dir, "???");
if(fname[0] == '/')
sprintf((char *)spath, "%s%s", newroot, fname);
else
if(dir[1] == '\0')
sprintf((char *)spath, "%s%s%s", newroot, dir, fname);
else
sprintf((char *)spath, "%s%s/%s", newroot, dir, fname);
return((char *)spath);
}
/* do file detail */
static int dofdet(buff)
char *buff;
{
struct stat st;
char ft;
if(ChkLoggedIn())
return(GOOD);
if(stat(buff, &st)) {
printf("501 Could not obtain file detail.\r\n");
return(GOOD);
}
switch(st.st_mode & S_IFMT) {
case S_IFIFO: ft = 'p'; break;
case S_IFCHR: ft = 'c'; break;
case S_IFDIR: ft = 'd'; break;
case S_IFBLK: ft = 'b'; break;
case S_IFREG: ft = 'f'; break;
default: ft = '?'; break;
}
printf("202 %c %u %u %u %u %u %lu %lu\r\n",
ft, /* file type */
st.st_rdev >> 8, /* Major */
st.st_rdev & 0xff, /* Minor */
st.st_uid, /* UID */
st.st_gid, /* GID */
st.st_mode, /* File Modes */
st.st_size, /* SIZE */
st.st_mtime); /* Mod Time */
return(GOOD);
}
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