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minix/commands/zmodem/rz.c

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Initial revision
2005-04-21 16:53:53 +02:00
#define VERSION "2.03 05-17-88"
#define PUBDIR "/usr/spool/uucppublic"
/*% cc -compat -M2 -Ox -K -i -DMD -DOMEN % -o rz; size rz;
<-xtx-*> cc386 -Ox -DMD -DOMEN -DSEGMENTS=8 rz.c -o $B/rz; size $B/rz
*
* rz.c By Chuck Forsberg
*
* cc -O rz.c -o rz USG (3.0) Unix
* cc -O -DV7 rz.c -o rz Unix V7, BSD 2.8 - 4.3
*
* ln rz rb; ln rz rx For either system
*
* ln rz /usr/bin/rzrmail For remote mail. Make this the
* login shell. rzrmail then calls
* rmail(1) to deliver mail.
*
* To compile on VMS:
*
* define LNK$LIBRARY SYS$LIBRARY:VAXCRTL.OLB
* cc rz.c
* cc vvmodem.c
* link rz,vvmodem
* rz :== $disk:[username.subdir]rz.exe
*
*
* Unix is a trademark of Western Electric Company
*
* A program for Unix to receive files and commands from computers running
* Professional-YAM, PowerCom, YAM, IMP, or programs supporting XMODEM.
* rz uses Unix buffered input to reduce wasted CPU time.
*
* Iff the program is invoked by rzCOMMAND, output is piped to
* "COMMAND filename" (Unix only)
*
* Some systems (Venix, Coherent, Regulus) may not support tty raw mode
* read(2) the same way as Unix. ONEREAD must be defined to force one
* character reads for these systems. Added 7-01-84 CAF
*
* Alarm signal handling changed to work with 4.2 BSD 7-15-84 CAF
*
* BIX added 6-30-87 to support BIX(TM) upload protocol used by the
* Byte Information Exchange.
*
* NFGVMIN Updated 2-18-87 CAF for Xenix systems where c_cc[VMIN]
* doesn't work properly (even though it compiles without error!),
*
* SEGMENTS=n added 2-21-88 as a model for CP/M programs
* for CP/M-80 systems that cannot overlap modem and disk I/O.
*
* VMS flavor hacks begin with rz version 2.00
*
* -DMD may be added to compiler command line to compile in
* Directory-creating routines from Public Domain TAR by John Gilmore
*
* HOWMANY may be tuned for best performance
*
* USG UNIX (3.0) ioctl conventions courtesy Jeff Martin
*/
#include <sys/types.h>
#ifdef vax11c
#include <types.h>
#include <stat.h>
#define LOGFILE "rzlog.tmp"
#define OS "VMS"
#define BUFREAD
extern int errno;
#define SS_NORMAL SS$_NORMAL
#else
/* Not vax11c */
#define SS_NORMAL 0
#define LOGFILE "/tmp/rzlog"
#endif
#include <time.h>
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include <setjmp.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <utime.h>
#include <stdio.h>
#define OK 0
#define FALSE 0
#define TRUE 1
#undef ERROR
#define ERROR (-1)
_PROTOTYPE(long getfree , (void));
_PROTOTYPE(void alrm , (int sig ));
_PROTOTYPE(int main , (int argc , char *argv []));
_PROTOTYPE(int usage , (void));
_PROTOTYPE(int wcreceive , (int argc , char **argp ));
_PROTOTYPE(int wcrxpn , (char *rpn ));
_PROTOTYPE(int wcrx , (void));
_PROTOTYPE(int wcgetsec , (char *rxbuf , int maxtime ));
_PROTOTYPE(int readline , (int timeout ));
_PROTOTYPE(void purgeline , (void));
_PROTOTYPE(int procheader , (char *name ));
_PROTOTYPE(int make_dirs , (char *pathname ));
_PROTOTYPE(int makedir , (char *dpath , int dmode ));
_PROTOTYPE(int putsec , (char *buf , int n ));
_PROTOTYPE(void sendline , (int c ));
_PROTOTYPE(void flushmo , (void));
_PROTOTYPE(void uncaps , (char *s ));
_PROTOTYPE(int IsAnyLower , (char *s ));
_PROTOTYPE(char *substr , (char *s , char *t ));
void zperr();
_PROTOTYPE(void canit , (void));
_PROTOTYPE(void report , (int sct ));
_PROTOTYPE(void chkinvok , (char *s ));
_PROTOTYPE(void checkpath , (char *name ));
_PROTOTYPE(int tryz , (void));
_PROTOTYPE(int rzfiles , (void));
_PROTOTYPE(int rzfile , (void));
_PROTOTYPE(void zmputs , (char *s ));
_PROTOTYPE(int closeit , (void));
_PROTOTYPE(void ackbibi , (void));
_PROTOTYPE(void bttyout , (int c ));
_PROTOTYPE(int sys2 , (char *s ));
_PROTOTYPE(void exec2 , (char *s ));
/*
* Max value for HOWMANY is 255.
* A larger value reduces system overhead but may evoke kernel bugs.
* 133 corresponds to an XMODEM/CRC sector
*/
#ifndef HOWMANY
#define HOWMANY 133
#endif
/* Ward Christensen / CP/M parameters - Don't change these! */
#define ENQ 005
#define CAN ('X'&037)
#define XOFF ('s'&037)
#define XON ('q'&037)
#define SOH 1
#define STX 2
#define EOT 4
#define ACK 6
#define NAK 025
#define CPMEOF 032
#define WANTCRC 0103 /* send C not NAK to get crc not checksum */
#define TIMEOUT (-2)
#define RCDO (-3)
#define ERRORMAX 5
#define RETRYMAX 5
#define WCEOT (-10)
#define PATHLEN 257 /* ready for 4.2 bsd ? */
#define UNIXFILE 0xF000 /* The S_IFMT file mask bit for stat */
int Zmodem=0; /* ZMODEM protocol requested */
int Nozmodem = 0; /* If invoked as "rb" */
unsigned Baudrate = 2400;
#ifdef vax11c
#include "vrzsz.c" /* most of the system dependent stuff here */
#else
#include "rbsb.c" /* most of the system dependent stuff here */
#endif
#include "crctab.c"
FILE *fout;
/*
* Routine to calculate the free bytes on the current file system
* ~0 means many free bytes (unknown)
*/
long getfree()
{
return(~0L); /* many free bytes ... */
}
int Lastrx;
int Crcflg;
int Firstsec;
int Eofseen; /* indicates cpm eof (^Z) has been received */
int errors;
int Restricted=0; /* restricted; no /.. or ../ in filenames */
#ifdef ONEREAD
/* Sorry, Regulus and some others don't work right in raw mode! */
int Readnum = 1; /* Number of bytes to ask for in read() from modem */
#else
int Readnum = HOWMANY; /* Number of bytes to ask for in read() from modem */
#endif
#define DEFBYTL 2000000000L /* default rx file size */
long Bytesleft; /* number of bytes of incoming file left */
long Modtime; /* Unix style mod time for incoming file */
int Filemode; /* Unix style mode for incoming file */
char Pathname[PATHLEN];
char *Progname; /* the name by which we were called */
int Batch=0;
int Topipe=0;
int MakeLCPathname=TRUE; /* make received pathname lower case */
int Verbose=0;
int Quiet=0; /* overrides logic that would otherwise set verbose */
int Nflag = 0; /* Don't really transfer files */
int Rxclob=FALSE; /* Clobber existing file */
int Rxbinary=FALSE; /* receive all files in bin mode */
int Rxascii=FALSE; /* receive files in ascii (translate) mode */
int Thisbinary; /* current file is to be received in bin mode */
int Blklen; /* record length of received packets */
#ifdef SEGMENTS
int chinseg = 0; /* Number of characters received in this data seg */
char secbuf[1+(SEGMENTS+1)*1024];
#else
char secbuf[1025];
#endif
char linbuf[HOWMANY];
int Lleft=0; /* number of characters in linbuf */
time_t timep[2];
char Lzmanag; /* Local file management request */
char zconv; /* ZMODEM file conversion request */
char zmanag; /* ZMODEM file management request */
char ztrans; /* ZMODEM file transport request */
int Zctlesc; /* Encode control characters */
int Zrwindow = 1400; /* RX window size (controls garbage count) */
jmp_buf tohere; /* For the interrupt on RX timeout */
#define xsendline(c) sendline(c)
#include "zm.c"
int tryzhdrtype=ZRINIT; /* Header type to send corresponding to Last rx close */
void alrm(sig)
int sig;
{
longjmp(tohere, -1);
}
/* called by signal interrupt or terminate to clean things up */
void bibi(n)
int n;
{
if (Zmodem)
zmputs(Attn);
canit(); mode(0);
fprintf(stderr, "rz: caught signal %d; exiting\n", n);
cucheck();
exit(128+n);
}
int main(argc, argv)
int argc;
char *argv[];
{
register char *cp;
register npats;
char *virgin, **patts;
int exitcode = 0;
Rxtimeout = 100;
setbuf(stderr, (char *)NULL);
if ((cp=getenv("SHELL")) && (substr(cp, "rsh") || substr(cp, "rksh")))
Restricted=TRUE;
from_cu();
#ifdef vax11c
Progname = virgin = "rz";
#else
chkinvok(virgin=argv[0]); /* if called as [-]rzCOMMAND set flag */
#endif
npats = 0;
while (--argc) {
cp = *++argv;
if (*cp == '-') {
while( *++cp) {
switch(*cp) {
case '\\':
cp[1] = toupper(cp[1]); continue;
case '+':
Lzmanag = ZMAPND; break;
case 'a':
Rxascii=TRUE; break;
case 'b':
Rxbinary=TRUE; break;
case 'c':
Crcflg=TRUE; break;
#ifndef vax11c
case 'D':
Nflag = TRUE; break;
#endif
case 'e':
Zctlesc = 1; break;
case 'p':
Lzmanag = ZMPROT; break;
case 'q':
Quiet=TRUE; Verbose=0; break;
case 't':
if (--argc < 1) {
usage();
}
Rxtimeout = atoi(*++argv);
if (Rxtimeout<10 || Rxtimeout>1000)
usage();
break;
case 'w':
if (--argc < 1) {
usage();
}
Zrwindow = atoi(*++argv);
break;
case 'u':
MakeLCPathname=FALSE; break;
case 'v':
++Verbose; break;
case 'y':
Rxclob=TRUE; break;
default:
usage();
}
}
}
else if ( !npats && argc>0) {
if (argv[0][0]) {
npats=argc;
patts=argv;
}
}
}
if (npats > 1)
usage();
if (Batch && npats)
usage();
if (Verbose) {
if (freopen(LOGFILE, "a", stderr)==NULL) {
printf("Can't open log file %s\n",LOGFILE);
exit(0200);
}
setbuf(stderr, (char *)NULL);
fprintf(stderr, "argv[0]=%s Progname=%s\n", virgin, Progname);
}
if (Fromcu && !Quiet) {
if (Verbose == 0)
Verbose = 2;
}
vfile("%s %s for %s\n", Progname, VERSION, OS);
mode(1);
if (signal(SIGINT, bibi) == SIG_IGN) {
signal(SIGINT, SIG_IGN); signal(SIGKILL, SIG_IGN);
}
else {
signal(SIGINT, bibi); signal(SIGKILL, bibi);
}
signal(SIGTERM, bibi);
if (wcreceive(npats, patts)==ERROR) {
exitcode=0200;
canit();
}
mode(0);
vfile("exitcode = %d\n",exitcode);
if (exitcode && !Zmodem) /* bellow again with all thy might. */
canit();
if (exitcode)
cucheck();
if (Verbose) putc('\n', stderr);
exit(exitcode ? exitcode:SS_NORMAL);
}
int usage()
{
cucheck();
#ifdef vax11c
fprintf(stderr,"Usage: rz [-abeuvy]\n");
#else
fprintf(stderr,"Usage: rz [-abeuvy] (ZMODEM)\n");
fprintf(stderr,"or rb [-abuvy] (YMODEM)\n");
fprintf(stderr,"or rx [-abcv] file (XMODEM or XMODEM-1k)\n");
#endif
fprintf(stderr," -a ASCII transfer (strip CR)\n");
fprintf(stderr," -b Binary transfer for all files\n");
#ifndef vax11c
fprintf(stderr," -c Use 16 bit CRC (XMODEM)\n");
#endif
fprintf(stderr," -e Escape control characters (ZMODEM)\n");
fprintf(stderr," -v Verbose more v's give more info\n");
fprintf(stderr," -y Yes, clobber existing file if any\n");
fprintf(stderr,"%s %s for %s by Chuck Forsberg, Omen Technology INC\n",
Progname, VERSION, OS);
fprintf(stderr, "\t\t\042The High Reliability Software\042\n");
exit(SS_NORMAL);
}
/*
* Debugging information output interface routine
*/
/* VARARGS1 */
void vfile(f, a, b, c)
register char *f,*a,*b,*c;
{
if (Verbose > 2) {
fprintf(stderr, f, a, b, c);
fprintf(stderr, "\n");
}
}
/*
* Let's receive something already.
*/
char *rbmsg =
"%s ready. To begin transfer, type \"%s file ...\" to your modem program\r\n\n";
int wcreceive(argc, argp)
int argc;
char **argp;
{
register c;
if (Batch || argc==0) {
Crcflg=1;
if ( !Quiet)
fprintf(stderr, rbmsg, Progname, Nozmodem?"sb":"sz");
if (c=tryz()) {
if (c == ZCOMPL)
return OK;
if (c == ERROR)
goto fubar;
c = rzfiles();
if (c)
goto fubar;
} else {
for (;;) {
if (wcrxpn(secbuf)== ERROR)
goto fubar;
if (secbuf[0]==0)
return OK;
if (procheader(secbuf) == ERROR)
goto fubar;
if (wcrx()==ERROR)
goto fubar;
}
}
} else {
Bytesleft = DEFBYTL; Filemode = 0; Modtime = 0L;
procheader(""); strcpy(Pathname, *argp); checkpath(Pathname);
fprintf(stderr, "\nrz: ready to receive %s\r\n", Pathname);
if ((fout=fopen(Pathname, "w")) == NULL)
return ERROR;
if (wcrx()==ERROR)
goto fubar;
}
return OK;
fubar:
canit();
#ifndef vax11c
if (Topipe && fout) {
pclose(fout); return ERROR;
}
#endif
if (fout)
fclose(fout);
#ifndef vax11c
if (Restricted) {
unlink(Pathname);
fprintf(stderr, "\r\nrz: %s removed.\r\n", Pathname);
}
#endif
return ERROR;
}
/*
* Fetch a pathname from the other end as a C ctyle ASCIZ string.
* Length is indeterminate as long as less than Blklen
* A null string represents no more files (YMODEM)
*/
int wcrxpn(rpn)
char *rpn; /* receive a pathname */
{
register c;
#ifdef NFGVMIN
readline(1);
#else
purgeline();
#endif
et_tu:
Firstsec=TRUE; Eofseen=FALSE;
sendline(Crcflg?WANTCRC:NAK);
Lleft=0; /* Do read next time ... */
while ((c = wcgetsec(rpn, 100)) != 0) {
if (c == WCEOT) {
zperr( "Pathname fetch returned %d", c);
sendline(ACK);
Lleft=0; /* Do read next time ... */
readline(1);
goto et_tu;
}
return ERROR;
}
sendline(ACK);
return OK;
}
/*
* Adapted from CMODEM13.C, written by
* Jack M. Wierda and Roderick W. Hart
*/
int wcrx()
{
register int sectnum, sectcurr;
register char sendchar;
int cblklen; /* bytes to dump this block */
Firstsec=TRUE;sectnum=0; Eofseen=FALSE;
sendchar=Crcflg?WANTCRC:NAK;
for (;;) {
sendline(sendchar); /* send it now, we're ready! */
Lleft=0; /* Do read next time ... */
sectcurr=wcgetsec(secbuf, (sectnum&0177)?50:130);
report(sectcurr);
if (sectcurr==((sectnum+1) &0377)) {
sectnum++;
cblklen = Bytesleft>Blklen ? Blklen:Bytesleft;
if (putsec(secbuf, cblklen)==ERROR)
return ERROR;
if ((Bytesleft-=cblklen) < 0)
Bytesleft = 0;
sendchar=ACK;
}
else if (sectcurr==(sectnum&0377)) {
zperr( "Received dup Sector");
sendchar=ACK;
}
else if (sectcurr==WCEOT) {
if (closeit())
return ERROR;
sendline(ACK);
Lleft=0; /* Do read next time ... */
return OK;
}
else if (sectcurr==ERROR)
return ERROR;
else {
zperr( "Sync Error");
return ERROR;
}
}
}
/*
* Wcgetsec fetches a Ward Christensen type sector.
* Returns sector number encountered or ERROR if valid sector not received,
* or CAN CAN received
* or WCEOT if eot sector
* time is timeout for first char, set to 4 seconds thereafter
***************** NO ACK IS SENT IF SECTOR IS RECEIVED OK **************
* (Caller must do that when he is good and ready to get next sector)
*/
int wcgetsec(rxbuf, maxtime)
char *rxbuf;
int maxtime;
{
register checksum, wcj, firstch;
register unsigned short oldcrc;
register char *p;
int sectcurr;
for (Lastrx=errors=0; errors<RETRYMAX; errors++) {
if ((firstch=readline(maxtime))==STX) {
Blklen=1024; goto get2;
}
if (firstch==SOH) {
Blklen=128;
get2:
sectcurr=readline(1);
if ((sectcurr+(oldcrc=readline(1)))==0377) {
oldcrc=checksum=0;
for (p=rxbuf,wcj=Blklen; --wcj>=0; ) {
if ((firstch=readline(1)) < 0)
goto bilge;
oldcrc=updcrc(firstch, oldcrc);
checksum += (*p++ = firstch);
}
if ((firstch=readline(1)) < 0)
goto bilge;
if (Crcflg) {
oldcrc=updcrc(firstch, oldcrc);
if ((firstch=readline(1)) < 0)
goto bilge;
oldcrc=updcrc(firstch, oldcrc);
if (oldcrc & 0xFFFF)
zperr( "CRC");
else {
Firstsec=FALSE;
return sectcurr;
}
}
else if (((checksum-firstch)&0377)==0) {
Firstsec=FALSE;
return sectcurr;
}
else
zperr( "Checksum");
}
else
zperr("Sector number garbled");
}
/* make sure eot really is eot and not just mixmash */
#ifdef NFGVMIN
else if (firstch==EOT && readline(1)==TIMEOUT)
return WCEOT;
#else
else if (firstch==EOT && Lleft==0)
return WCEOT;
#endif
else if (firstch==CAN) {
if (Lastrx==CAN) {
zperr( "Sender CANcelled");
return ERROR;
} else {
Lastrx=CAN;
continue;
}
}
else if (firstch==TIMEOUT) {
if (Firstsec)
goto humbug;
bilge:
zperr( "TIMEOUT");
}
else
zperr( "Got 0%o sector header", firstch);
humbug:
Lastrx=0;
while(readline(1)!=TIMEOUT)
;
if (Firstsec) {
sendline(Crcflg?WANTCRC:NAK);
Lleft=0; /* Do read next time ... */
} else {
maxtime=40; sendline(NAK);
Lleft=0; /* Do read next time ... */
}
}
/* try to stop the bubble machine. */
canit();
return ERROR;
}
#ifndef vax11c
/*
* This version of readline is reasoably well suited for
* reading many characters.
* (except, currently, for the Regulus version!)
*
* timeout is in tenths of seconds
*/
int readline(timeout)
int timeout;
{
register n;
static char *cdq; /* pointer for removing chars from linbuf */
if (--Lleft >= 0) {
if (Verbose > 8) {
fprintf(stderr, "%02x ", *cdq&0377);
}
return (*cdq++ & 0377);
}
n = timeout/10;
if (n < 2)
n = 3;
if (Verbose > 5)
fprintf(stderr, "Calling read: alarm=%d Readnum=%d ",
n, Readnum);
if (setjmp(tohere)) {
#ifdef TIOCFLUSH
/* ioctl(iofd, TIOCFLUSH, 0); */
#endif
Lleft = 0;
if (Verbose>1)
fprintf(stderr, "Readline:TIMEOUT\n");
return TIMEOUT;
}
signal(SIGALRM, alrm); alarm(n);
Lleft=read(iofd, cdq=linbuf, Readnum);
alarm(0);
if (Verbose > 5) {
fprintf(stderr, "Read returned %d bytes\n", Lleft);
}
if (Lleft < 1)
return TIMEOUT;
--Lleft;
if (Verbose > 8) {
fprintf(stderr, "%02x ", *cdq&0377);
}
return (*cdq++ & 0377);
}
/*
* Purge the modem input queue of all characters
*/
void purgeline()
{
Lleft = 0;
#ifdef USG
ioctl(iofd, TCFLSH, 0);
#else
lseek(iofd, 0L, 2);
#endif
}
#endif
/*
* Process incoming file information header
*/
int procheader(name)
char *name;
{
register char *openmode, *p;
/* set default parameters and overrides */
openmode = "w";
Thisbinary = (!Rxascii) || Rxbinary;
if (Lzmanag)
zmanag = Lzmanag;
/*
* Process ZMODEM remote file management requests
*/
if (!Rxbinary && zconv == ZCNL) /* Remote ASCII override */
Thisbinary = 0;
if (zconv == ZCBIN) /* Remote Binary override */
Thisbinary = TRUE;
else if (zmanag == ZMAPND)
openmode = "a";
#ifndef BIX
/* Check for existing file */
if (!Rxclob && (zmanag&ZMMASK) != ZMCLOB && (fout=fopen(name, "r"))) {
fclose(fout); return ERROR;
}
#endif
Bytesleft = DEFBYTL; Filemode = 0; Modtime = 0L;
p = name + 1 + strlen(name);
if (*p) { /* file coming from Unix or DOS system */
sscanf(p, "%ld%lo%o", &Bytesleft, &Modtime, &Filemode);
#ifndef vax11c
if (Filemode & UNIXFILE)
++Thisbinary;
#endif
if (Verbose) {
fprintf(stderr, "\nIncoming: %s %ld %lo %o\n",
name, Bytesleft, Modtime, Filemode);
}
}
#ifdef BIX
if ((fout=fopen("scratchpad", openmode)) == NULL)
return ERROR;
return OK;
#else
else { /* File coming from CP/M system */
for (p=name; *p; ++p) /* change / to _ */
if ( *p == '/')
*p = '_';
if ( *--p == '.') /* zap trailing period */
*p = 0;
}
#ifndef vax11c
if (!Zmodem && MakeLCPathname && !IsAnyLower(name)
&& !(Filemode&UNIXFILE))
uncaps(name);
#endif
if (Topipe > 0) {
sprintf(Pathname, "%s %s", Progname+2, name);
if (Verbose)
fprintf(stderr, "Topipe: %s %s\n",
Pathname, Thisbinary?"BIN":"ASCII");
#ifndef vax11c
if ((fout=popen(Pathname, "w")) == NULL)
return ERROR;
#endif
} else {
strcpy(Pathname, name);
if (Verbose) {
fprintf(stderr, "Receiving %s %s %s\n",
name, Thisbinary?"BIN":"ASCII", openmode);
}
checkpath(name);
if (Nflag)
name = "/dev/null";
#ifndef vax11c
#ifdef OMEN
if (name[0] == '!' || name[0] == '|') {
if ( !(fout = popen(name+1, "w"))) {
return ERROR;
}
Topipe = -1; return(OK);
}
#endif
#endif
#ifdef MD
fout = fopen(name, openmode);
if ( !fout)
if (make_dirs(name))
fout = fopen(name, openmode);
#else
fout = fopen(name, openmode);
#endif
if ( !fout)
return ERROR;
}
return OK;
#endif /* BIX */
}
#ifdef MD
/*
* Directory-creating routines from Public Domain TAR by John Gilmore
*/
/*
* After a file/link/symlink/dir creation has failed, see if
* it's because some required directory was not present, and if
* so, create all required dirs.
*/
int make_dirs(pathname)
register char *pathname;
{
register char *p; /* Points into path */
int madeone = 0; /* Did we do anything yet? */
int save_errno = errno; /* Remember caller's errno */
char *strchr();
if (errno != ENOENT)
return 0; /* Not our problem */
for (p = strchr(pathname, '/'); p != NULL; p = strchr(p+1, '/')) {
/* Avoid mkdir of empty string, if leading or double '/' */
if (p == pathname || p[-1] == '/')
continue;
/* Avoid mkdir where last part of path is '.' */
if (p[-1] == '.' && (p == pathname+1 || p[-2] == '/'))
continue;
*p = 0; /* Truncate the path there */
if ( !makedir(pathname, 0777)) { /* Try to create it as a dir */
vfile("Made directory %s\n", pathname);
madeone++; /* Remember if we made one */
*p = '/';
continue;
}
*p = '/';
if (errno == EEXIST) /* Directory already exists */
continue;
/*
* Some other error in the makedir. We return to the caller.
*/
break;
}
errno = save_errno; /* Restore caller's errno */
return madeone; /* Tell them to retry if we made one */
}
#if (MD != 2)
#define TERM_SIGNAL(status) ((status) & 0x7F)
#define TERM_COREDUMP(status) (((status) & 0x80) != 0)
#define TERM_VALUE(status) ((status) >> 8)
/*
* Make a directory. Compatible with the mkdir() system call on 4.2BSD.
*/
int makedir(dpath, dmode)
char *dpath;
int dmode;
{
int cpid, status;
struct stat statbuf;
if (stat(dpath,&statbuf) == 0) {
errno = EEXIST; /* Stat worked, so it already exists */
return -1;
}
/* If stat fails for a reason other than non-existence, return error */
if (errno != ENOENT) return -1;
switch (cpid = fork()) {
case -1: /* Error in fork() */
return(-1); /* Errno is set already */
case 0: /* Child process */
/*
* Cheap hack to set mode of new directory. Since this
* child process is going away anyway, we zap its umask.
* FIXME, this won't suffice to set SUID, SGID, etc. on this
* directory. Does anybody care?
*/
status = umask(0); /* Get current umask */
status = umask(status | (0777 & ~dmode)); /* Set for mkdir */
execl("/bin/mkdir", "mkdir", dpath, (char *)0);
_exit(-1); /* Can't exec /bin/mkdir */
default: /* Parent process */
while (cpid != wait(&status)) ; /* Wait for kid to finish */
}
if (TERM_SIGNAL(status) != 0 || TERM_VALUE(status) != 0) {
errno = EIO; /* We don't know why, but */
return -1; /* /bin/mkdir failed */
}
return 0;
}
#endif /* MD != 2 */
#endif /* MD */
/*
* Putsec writes the n characters of buf to receive file fout.
* If not in binary mode, carriage returns, and all characters
* starting with CPMEOF are discarded.
*/
int putsec(buf, n)
char *buf;
register int n;
{
register char *p;
if (n == 0)
return OK;
if (Thisbinary) {
for (p=buf; --n>=0; )
putc( *p++, fout);
}
else {
if (Eofseen)
return OK;
for (p=buf; --n>=0; ++p ) {
if ( *p == '\r')
continue;
if (*p == CPMEOF) {
Eofseen=TRUE; return OK;
}
putc(*p ,fout);
}
}
return OK;
}
#ifndef vax11c
/*
* Send a character to modem. Small is beautiful.
*/
void sendline(c)
int c;
{
char d;
d = c;
if (Verbose>6)
fprintf(stderr, "Sendline: %x\n", c);
write(1, &d, 1);
}
void flushmo() {}
#endif
/* make string s lower case */
void uncaps(s)
register char *s;
{
for ( ; *s; ++s)
if (isupper(*s))
*s = tolower(*s);
}
/*
* IsAnyLower returns TRUE if string s has lower case letters.
*/
int IsAnyLower(s)
register char *s;
{
for ( ; *s; ++s)
if (islower(*s))
return TRUE;
return FALSE;
}
/*
* substr(string, token) searches for token in string s
* returns pointer to token within string if found, NULL otherwise
*/
char *
substr(s, t)
register char *s,*t;
{
register char *ss,*tt;
/* search for first char of token */
for (ss=s; *s; s++)
if (*s == *t)
/* compare token with substring */
for (ss=s,tt=t; ;) {
if (*tt == 0)
return s;
if (*ss++ != *tt++)
break;
}
return (char *)NULL;
}
/*
* Log an error
*/
/*VARARGS1*/
void zperr(s,p,u)
char *s, *p, *u;
{
if (Verbose <= 0)
return;
fprintf(stderr, "Retry %d: ", errors);
fprintf(stderr, s, p, u);
fprintf(stderr, "\n");
}
/* send cancel string to get the other end to shut up */
void canit()
{
static char canistr[] = {
24,24,24,24,24,24,24,24,24,24,8,8,8,8,8,8,8,8,8,8,0
};
#ifdef vax11c
raw_wbuf(strlen(canistr), canistr);
purgeline();
#else
printf(canistr);
Lleft=0; /* Do read next time ... */
fflush(stdout);
#endif
}
void report(sct)
int sct;
{
if (Verbose>1)
fprintf(stderr,"%03d%c",sct,sct%10? ' ' : '\r');
}
#ifndef vax11c
/*
* If called as [-][dir/../]vrzCOMMAND set Verbose to 1
* If called as [-][dir/../]rzCOMMAND set the pipe flag
* If called as rb use YMODEM protocol
*/
void chkinvok(s)
char *s;
{
register char *p;
p = s;
while (*p == '-')
s = ++p;
while (*p)
if (*p++ == '/')
s = p;
if (*s == 'v') {
Verbose=1; ++s;
}
Progname = s;
if (s[0]=='r' && s[1]=='z')
Batch = TRUE;
if (s[0]=='r' && s[1]=='b')
Batch = Nozmodem = TRUE;
if (s[2] && s[0]=='r' && s[1]=='b')
Topipe = 1;
if (s[2] && s[0]=='r' && s[1]=='z')
Topipe = 1;
}
#endif
/*
* Totalitarian Communist pathname processing
*/
void checkpath(name)
char *name;
{
if (Restricted) {
if (fopen(name, "r") != NULL) {
canit();
fprintf(stderr, "\r\nrz: %s exists\n", name);
bibi(-1);
}
/* restrict pathnames to current tree or uucppublic */
if ( substr(name, "../")
|| (name[0]== '/' && strncmp(name, PUBDIR, strlen(PUBDIR))) ) {
canit();
fprintf(stderr,"\r\nrz:\tSecurity Violation\r\n");
bibi(-1);
}
}
}
/*
* Initialize for Zmodem receive attempt, try to activate Zmodem sender
* Handles ZSINIT frame
* Return ZFILE if Zmodem filename received, -1 on error,
* ZCOMPL if transaction finished, else 0
*/
int tryz()
{
register c, n;
register cmdzack1flg;
if (Nozmodem) /* Check for "rb" program name */
return 0;
for (n=Zmodem?15:5; --n>=0; ) {
/* Set buffer length (0) and capability flags */
#ifdef SEGMENTS
stohdr(SEGMENTS*1024L);
#else
stohdr(0L);
#endif
#ifdef CANBREAK
Txhdr[ZF0] = CANFC32|CANFDX|CANOVIO|CANBRK;
#else
Txhdr[ZF0] = CANFC32|CANFDX|CANOVIO;
#endif
if (Zctlesc)
Txhdr[ZF0] |= TESCCTL;
zshhdr(tryzhdrtype, Txhdr);
if (tryzhdrtype == ZSKIP) /* Don't skip too far */
tryzhdrtype = ZRINIT; /* CAF 8-21-87 */
again:
switch (zgethdr(Rxhdr, 0)) {
case ZRQINIT:
continue;
case ZEOF:
continue;
case TIMEOUT:
continue;
case ZFILE:
zconv = Rxhdr[ZF0];
zmanag = Rxhdr[ZF1];
ztrans = Rxhdr[ZF2];
tryzhdrtype = ZRINIT;
c = zrdata(secbuf, 1024);
mode(3);
if (c == GOTCRCW)
return ZFILE;
zshhdr(ZNAK, Txhdr);
goto again;
case ZSINIT:
Zctlesc = TESCCTL & Rxhdr[ZF0];
if (zrdata(Attn, ZATTNLEN) == GOTCRCW) {
stohdr(1L);
zshhdr(ZACK, Txhdr);
goto again;
}
zshhdr(ZNAK, Txhdr);
goto again;
case ZFREECNT:
stohdr(getfree());
zshhdr(ZACK, Txhdr);
goto again;
case ZCOMMAND:
#ifdef vax11c
return ERROR;
#else
cmdzack1flg = Rxhdr[ZF0];
if (zrdata(secbuf, 1024) == GOTCRCW) {
if (cmdzack1flg & ZCACK1)
stohdr(0L);
else
stohdr((long)sys2(secbuf));
purgeline(); /* dump impatient questions */
do {
zshhdr(ZCOMPL, Txhdr);
}
while (++errors<20 && zgethdr(Rxhdr,1) != ZFIN);
ackbibi();
if (cmdzack1flg & ZCACK1)
exec2(secbuf);
return ZCOMPL;
}
zshhdr(ZNAK, Txhdr); goto again;
#endif
case ZCOMPL:
goto again;
default:
continue;
case ZFIN:
ackbibi(); return ZCOMPL;
case ZCAN:
return ERROR;
}
}
return 0;
}
/*
* Receive 1 or more files with ZMODEM protocol
*/
int rzfiles()
{
register c;
for (;;) {
switch (c = rzfile()) {
case ZEOF:
case ZSKIP:
switch (tryz()) {
case ZCOMPL:
return OK;
default:
return ERROR;
case ZFILE:
break;
}
continue;
default:
return c;
case ERROR:
return ERROR;
}
}
}
/*
* Receive a file with ZMODEM protocol
* Assumes file name frame is in secbuf
*/
int rzfile()
{
register c, n;
long rxbytes;
Eofseen=FALSE;
if (procheader(secbuf) == ERROR) {
return (tryzhdrtype = ZSKIP);
}
n = 20; rxbytes = 0l;
for (;;) {
#ifdef SEGMENTS
chinseg = 0;
#endif
stohdr(rxbytes);
zshhdr(ZRPOS, Txhdr);
nxthdr:
switch (c = zgethdr(Rxhdr, 0)) {
default:
vfile("rzfile: zgethdr returned %d", c);
return ERROR;
case ZNAK:
case TIMEOUT:
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
if ( --n < 0) {
vfile("rzfile: zgethdr returned %d", c);
return ERROR;
}
case ZFILE:
zrdata(secbuf, 1024);
continue;
case ZEOF:
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
if (rclhdr(Rxhdr) != rxbytes) {
/*
* Ignore eof if it's at wrong place - force
* a timeout because the eof might have gone
* out before we sent our zrpos.
*/
errors = 0; goto nxthdr;
}
if (closeit()) {
tryzhdrtype = ZFERR;
vfile("rzfile: closeit returned <> 0");
return ERROR;
}
vfile("rzfile: normal EOF");
return c;
case ERROR: /* Too much garbage in header search error */
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
if ( --n < 0) {
vfile("rzfile: zgethdr returned %d", c);
return ERROR;
}
zmputs(Attn);
continue;
case ZSKIP:
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
closeit();
vfile("rzfile: Sender SKIPPED file");
return c;
case ZDATA:
if (rclhdr(Rxhdr) != rxbytes) {
if ( --n < 0) {
return ERROR;
}
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
zmputs(Attn); continue;
}
moredata:
if (Verbose>1)
fprintf(stderr, "\r%7ld ZMODEM%s ",
rxbytes, Crc32?" CRC-32":"");
#ifdef SEGMENTS
if (chinseg >= (1024 * SEGMENTS)) {
putsec(secbuf, chinseg);
chinseg = 0;
}
switch (c = zrdata(secbuf+chinseg, 1024))
#else
switch (c = zrdata(secbuf, 1024))
#endif
{
case ZCAN:
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
vfile("rzfile: zgethdr returned %d", c);
return ERROR;
case ERROR: /* CRC error */
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
if ( --n < 0) {
vfile("rzfile: zgethdr returned %d", c);
return ERROR;
}
zmputs(Attn);
continue;
case TIMEOUT:
#ifdef SEGMENTS
putsec(secbuf, chinseg);
chinseg = 0;
#endif
if ( --n < 0) {
vfile("rzfile: zgethdr returned %d", c);
return ERROR;
}
continue;
case GOTCRCW:
n = 20;
#ifdef SEGMENTS
chinseg += Rxcount;
putsec(secbuf, chinseg);
chinseg = 0;
#else
putsec(secbuf, Rxcount);
#endif
rxbytes += Rxcount;
stohdr(rxbytes);
zshhdr(ZACK, Txhdr);
sendline(XON);
goto nxthdr;
case GOTCRCQ:
n = 20;
#ifdef SEGMENTS
chinseg += Rxcount;
#else
putsec(secbuf, Rxcount);
#endif
rxbytes += Rxcount;
stohdr(rxbytes);
zshhdr(ZACK, Txhdr);
goto moredata;
case GOTCRCG:
n = 20;
#ifdef SEGMENTS
chinseg += Rxcount;
#else
putsec(secbuf, Rxcount);
#endif
rxbytes += Rxcount;
goto moredata;
case GOTCRCE:
n = 20;
#ifdef SEGMENTS
chinseg += Rxcount;
#else
putsec(secbuf, Rxcount);
#endif
rxbytes += Rxcount;
goto nxthdr;
}
}
}
}
/*
* Send a string to the modem, processing for \336 (sleep 1 sec)
* and \335 (break signal)
*/
void zmputs(s)
char *s;
{
register c;
while (*s) {
switch (c = *s++) {
case '\336':
sleep(1); continue;
case '\335':
sendbrk(); continue;
default:
sendline(c);
}
}
}
/*
* Close the receive dataset, return OK or ERROR
*/
int closeit()
{
time_t q;
#ifndef vax11c
if (Topipe) {
if (pclose(fout)) {
return ERROR;
}
return OK;
}
#endif
if (fclose(fout)==ERROR) {
fprintf(stderr, "file close ERROR\n");
return ERROR;
}
#ifndef vax11c
if (Modtime) {
timep[0] = time(&q);
timep[1] = Modtime;
utime(Pathname, (struct utimbuf *) timep);
}
#endif
if ((Filemode&S_IFMT) == S_IFREG)
chmod(Pathname, (07777 & Filemode));
return OK;
}
/*
* Ack a ZFIN packet, let byegones be byegones
*/
void ackbibi()
{
register n;
vfile("ackbibi:");
Readnum = 1;
stohdr(0L);
for (n=3; --n>=0; ) {
purgeline();
zshhdr(ZFIN, Txhdr);
switch (readline(100)) {
case 'O':
readline(1); /* Discard 2nd 'O' */
vfile("ackbibi complete");
return;
case RCDO:
return;
case TIMEOUT:
default:
break;
}
}
}
/*
* Local console output simulation
*/
void bttyout(c)
int c;
{
if (Verbose || Fromcu)
putc(c, stderr);
}
#ifndef vax11c
/*
* Strip leading ! if present, do shell escape.
*/
int sys2(s)
register char *s;
{
if (*s == '!')
++s;
return system(s);
}
/*
* Strip leading ! if present, do exec.
*/
void exec2(s)
register char *s;
{
if (*s == '!')
++s;
mode(0);
execl("/bin/sh", "sh", "-c", s);
}
#endif
/* End of rz.c */
Reference in a new issue Copy permalink