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- #define VERSION "1.26 08-21-87"
- #define PUBDIR "/usr/spool/uucppublic"
-
- /*% cc -M0 -Ox -K -i % -o rz; size rz;
- <-xtx-*> cc386 -Ox 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.
- *
- *
- * 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"
- *
- * 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!),
- *
- * HOWMANY may be tuned for best performance
- *
- * USG UNIX (3.0) ioctl conventions courtesy Jeff Martin
- */
- #define LOGFILE "/tmp/rzlog"
-
- #include <stdio.h>
- #include <signal.h>
- #include <setjmp.h>
- #include <ctype.h>
- FILE *popen();
-
- #define OK 0
- #define FALSE 0
- #define TRUE 1
- #define ERROR (-1)
-
- /*
- * 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
-
- int Zmodem=0; /* ZMODEM protocol requested */
- int Nozmodem = 0; /* If invoked as "rb" */
- unsigned Baudrate;
- #include "rbsb.c" /* most of the system dependent stuff here */
-
- char *substr();
- 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 ... */
- }
-
- /* 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 SECSIZ 128 /* cp/m's Magic Number record size */
- #define PATHLEN 257 /* ready for 4.2 bsd ? */
- #define KSIZE 1024 /* record size with k option */
- #define UNIXFILE 0x8000 /* happens to the the S_IFREG file mask bit for stat */
-
- 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 */
- short Filemode; /* Unix style mode for incoming file */
- char Pathname[PATHLEN];
- char *Progname; /* the name by which we were called */
-
- int Batch=0;
- int Wcsmask=0377;
- 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 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 */
- char secbuf[KSIZE+1];
- 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 */
-
- #include "zm.c"
-
- int tryzhdrtype=ZRINIT; /* Header type to send corresponding to Last rx close */
-
- alrm()
- {
- longjmp(tohere, -1);
- }
-
- /* called by signal interrupt or terminate to clean things up */
- bibi(n)
- {
- if (Zmodem)
- zmputs(Attn);
- canit(); mode(0);
- fprintf(stderr, "rz: caught signal %d; exiting", n);
- exit(128+n);
- }
-
- main(argc, argv)
- char *argv[];
- {
- register char *cp;
- register npats;
- char *virgin, **patts;
- char *getenv();
- int exitcode;
-
- Rxtimeout = 100;
- setbuf(stderr, NULL);
- if ((cp=getenv("SHELL")) && (substr(cp, "rsh") || substr(cp, "rksh")))
- Restricted=TRUE;
-
- chkinvok(virgin=argv[0]); /* if called as [-]rzCOMMAND set flag */
- npats = 0;
- while (--argc) {
- cp = *++argv;
- if (*cp == '-') {
- while( *++cp) {
- switch(*cp) {
- case '+':
- Lzmanag = ZMAPND; break;
- case '1':
- iofd = 1; break;
- case '7':
- Wcsmask = 0177;
- case 'a':
- Rxascii=TRUE; break;
- case 'b':
- Rxbinary=TRUE; break;
- case 'c':
- Crcflg=TRUE; break;
- case 'D':
- Nflag = TRUE; break;
- 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;
- default:
- usage();
- }
- }
- }
- else if ( !npats && argc>0) {
- if (argv[0][0]) {
- npats=argc;
- patts=argv;
- }
- }
- }
- if (npats > 1)
- usage();
- if (Verbose) {
- if (freopen(LOGFILE, "a", stderr)==NULL) {
- printf("Can't open log file %s\n",LOGFILE);
- exit(0200);
- }
- setbuf(stderr, NULL);
- fprintf(stderr, "argv[0]=%s Progname=%s\n", virgin, Progname);
- }
- if (fromcu() && !Quiet) {
- if (Verbose == 0)
- Verbose = 2;
- }
- 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);
- if (exitcode && !Zmodem) /* bellow again with all thy might. */
- canit();
- exit(exitcode);
- }
-
-
- usage()
- {
- fprintf(stderr,"%s %s for %s by Chuck Forsberg\n",
- Progname, VERSION, OS);
- fprintf(stderr,"Usage: rz [-1abeuv] (ZMODEM Batch)\n");
- fprintf(stderr,"or rb [-1abuv] (YMODEM Batch)\n");
- fprintf(stderr,"or rx [-1abcv] file (XMODEM or XMODEM-1k)\n");
- fprintf(stderr," -1 For cu(1): Use fd 1 for input\n");
- fprintf(stderr," -a ASCII transfer (strip CR)\n");
- fprintf(stderr," -b Binary transfer for all files\n");
- fprintf(stderr," -c Use 16 bit CRC (XMODEM)\n");
- fprintf(stderr," -e Ignore control characters (ZMODEM)\n");
- fprintf(stderr," -v Verbose more v's give more info\n");
- exit(1);
- }
- /*
- * Debugging information output interface routine
- */
- /* VARARGS1 */
- vfile(f, a, b, c)
- register char *f;
- {
- 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";
-
- wcreceive(argc, argp)
- char **argp;
- {
- register c;
-
- if (Batch || argc==0) {
- Crcflg=(Wcsmask==0377);
- 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();
- if (Topipe && fout) {
- pclose(fout); return ERROR;
- }
- if (fout)
- fclose(fout);
- if (Restricted) {
- unlink(Pathname);
- fprintf(stderr, "\r\nrz: %s removed.\r\n", Pathname);
- }
- 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)
- */
- 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
- */
-
- wcrx()
- {
- register int sectnum, sectcurr;
- register char sendchar;
- register char *p;
- 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 &Wcsmask)) {
- 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&Wcsmask)) {
- 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)
- */
-
- 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=KSIZE; goto get2;
- }
- if (firstch==SOH) {
- Blklen=SECSIZ;
- get2:
- sectcurr=readline(1);
- if ((sectcurr+(oldcrc=readline(1)))==Wcsmask) {
- 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 Error");
- else {
- Firstsec=FALSE;
- return sectcurr;
- }
- }
- else if (((checksum-firstch)&Wcsmask)==0) {
- Firstsec=FALSE;
- return sectcurr;
- }
- else
- zperr( "Checksum Error");
- }
- 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;
- }
-
- /*
- * This version of readline is reasoably well suited for
- * reading many characters.
- * (except, currently, for the Regulus version!)
- *
- * timeout is in tenths of seconds
- */
- 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++ & Wcsmask);
- }
- 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++ & Wcsmask);
- }
-
-
-
- /*
- * Purge the modem input queue of all characters
- */
- purgeline()
- {
- Lleft = 0;
- #ifdef USG
- ioctl(iofd, TCFLSH, 0);
- #else
- lseek(iofd, 0L, 2);
- #endif
- }
-
-
- /*
- * Process incoming file information header
- */
- procheader(name)
- char *name;
- {
- register char *openmode, *p, **pp;
-
- /* 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
- /* ZMPROT check for existing file */
- if (zmanag == ZMPROT && (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);
- if (Filemode & UNIXFILE)
- ++Thisbinary;
- if (Verbose) {
- fprintf(stderr, "Incoming: %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;
- }
-
- if (!Zmodem && MakeLCPathname && !IsAnyLower(name))
- uncaps(name);
- if (Topipe) {
- sprintf(Pathname, "%s %s", Progname+2, name);
- if (Verbose)
- fprintf(stderr, "Topipe: %s %s\n",
- Pathname, Thisbinary?"BIN":"ASCII");
- if ((fout=popen(Pathname, "w")) == NULL)
- return ERROR;
- } 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";
- if ((fout=fopen(name, openmode)) == NULL)
- return ERROR;
- }
- return OK;
- #endif /* BIX */
- }
-
- /*
- * 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.
- */
- putsec(buf, n)
- char *buf;
- register n;
- {
- register char *p;
-
- 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;
- }
-
- /*
- * Send a character to modem. Small is beautiful.
- */
- sendline(c)
- {
- char d;
-
- d = c;
- if (Verbose>6)
- fprintf(stderr, "Sendline: %x\n", c);
- write(1, &d, 1);
- }
-
- xsendline(c)
- {
- sendline(c);
- }
-
- flushmo() {}
-
-
-
-
- /* make string s lower case */
- uncaps(s)
- register char *s;
- {
- for ( ; *s; ++s)
- if (isupper(*s))
- *s = tolower(*s);
- }
- /*
- * IsAnyLower returns TRUE if string s has lower case letters.
- */
- 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 NULL;
- }
-
- /*
- * Log an error
- */
- /*VARARGS1*/
- zperr(s,p,u)
- char *s, *p, *u;
- {
- if (Verbose <= 0)
- return;
- fprintf(stderr, "Error %d: ", errors);
- fprintf(stderr, s, p, u);
- fprintf(stderr, "\n");
- }
-
- /* send cancel string to get the other end to shut up */
- 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
- };
-
- printf(canistr);
- Lleft=0; /* Do read next time ... */
- fflush(stdout);
- }
-
-
- /*
- * Return 1 iff stdout and stderr are different devices
- * indicating this program operating with a modem on a
- * different line
- */
- fromcu()
- {
- struct stat a, b;
- fstat(1, &a); fstat(2, &b);
- return (a.st_rdev != b.st_rdev);
- }
-
- report(sct)
- int sct;
- {
- if (Verbose>1)
- fprintf(stderr,"%03d%c",sct,sct%10? ' ' : '\r');
- }
-
- /*
- * 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
- */
- 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]=='b')
- Nozmodem = TRUE;
- if (s[2] && s[0]=='r' && s[1]=='b')
- Topipe=TRUE;
- if (s[2] && s[0]=='r' && s[1]=='z')
- Topipe=TRUE;
- }
-
- /*
- * Totalitarian Communist pathname processing
- */
- 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
- */
- 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 */
- stohdr(0L);
- #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, KSIZE);
- mode(3);
- if (c == GOTCRCW)
- return ZFILE;
- zshhdr(ZNAK, Txhdr);
- goto again;
- case ZSINIT:
- Zctlesc = TESCCTL & Rxhdr[ZF0];
- if (zrdata(Attn, ZATTNLEN) == GOTCRCW) {
- zshhdr(ZACK, Txhdr);
- goto again;
- }
- zshhdr(ZNAK, Txhdr);
- goto again;
- case ZFREECNT:
- stohdr(getfree());
- zshhdr(ZACK, Txhdr);
- goto again;
- case ZCOMMAND:
- cmdzack1flg = Rxhdr[ZF0];
- if (zrdata(secbuf, KSIZE) == 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;
- 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
- */
- 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
- */
- rzfile()
- {
- register c, n;
- long rxbytes;
-
- Eofseen=FALSE;
- if (procheader(secbuf) == ERROR) {
- return (tryzhdrtype = ZSKIP);
- }
-
- n = 20; rxbytes = 0l;
-
- for (;;) {
- stohdr(rxbytes);
- zshhdr(ZRPOS, Txhdr);
- nxthdr:
- switch (c = zgethdr(Rxhdr, 0)) {
- default:
- vfile("rzfile: zgethdr returned %d", c);
- return ERROR;
- case ZNAK:
- case TIMEOUT:
- if ( --n < 0) {
- vfile("rzfile: zgethdr returned %d", c);
- return ERROR;
- }
- case ZFILE:
- zrdata(secbuf, KSIZE);
- continue;
- case ZEOF:
- 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 */
- if ( --n < 0) {
- vfile("rzfile: zgethdr returned %d", c);
- return ERROR;
- }
- zmputs(Attn);
- continue;
- case ZDATA:
- if (rclhdr(Rxhdr) != rxbytes) {
- if ( --n < 0) {
- return ERROR;
- }
- zmputs(Attn); continue;
- }
- moredata:
- if (Verbose>1)
- fprintf(stderr, "\r%7ld ZMODEM%s ",
- rxbytes, Crc32?" CRC-32":"");
- switch (c = zrdata(secbuf, KSIZE)) {
- case ZCAN:
- vfile("rzfile: zgethdr returned %d", c);
- return ERROR;
- case ERROR: /* CRC error */
- if ( --n < 0) {
- vfile("rzfile: zgethdr returned %d", c);
- return ERROR;
- }
- zmputs(Attn);
- continue;
- case TIMEOUT:
- if ( --n < 0) {
- vfile("rzfile: zgethdr returned %d", c);
- return ERROR;
- }
- continue;
- case GOTCRCW:
- n = 20;
- putsec(secbuf, Rxcount);
- rxbytes += Rxcount;
- stohdr(rxbytes);
- zshhdr(ZACK, Txhdr);
- sendline(XON);
- goto nxthdr;
- case GOTCRCQ:
- n = 20;
- putsec(secbuf, Rxcount);
- rxbytes += Rxcount;
- stohdr(rxbytes);
- zshhdr(ZACK, Txhdr);
- goto moredata;
- case GOTCRCG:
- n = 20;
- putsec(secbuf, Rxcount);
- rxbytes += Rxcount;
- goto moredata;
- case GOTCRCE:
- n = 20;
- putsec(secbuf, Rxcount);
- rxbytes += Rxcount;
- goto nxthdr;
- }
- }
- }
- }
-
- /*
- * Send a string to the modem, processing for \336 (sleep 1 sec)
- * and \335 (break signal)
- */
- 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
- */
- closeit()
- {
- if (Topipe) {
- if (pclose(fout)) {
- return ERROR;
- }
- return OK;
- }
- if (fclose(fout)==ERROR) {
- fprintf(stderr, "file close ERROR\n");
- return ERROR;
- }
- if (Modtime) {
- timep[0] = time(NULL);
- timep[1] = Modtime;
- utime(Pathname, timep);
- }
- if (Filemode)
- chmod(Pathname, (07777 & Filemode));
- return OK;
- }
-
- /*
- * Ack a ZFIN packet, let byegones be byegones
- */
- 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
- */
- bttyout(c)
- {
- if (Verbose || fromcu())
- putc(c, stderr);
- }
-
- /*
- * Strip leading ! if present, do shell escape.
- */
- sys2(s)
- register char *s;
- {
- if (*s == '!')
- ++s;
- return system(s);
- }
- /*
- * Strip leading ! if present, do exec.
- */
- exec2(s)
- register char *s;
- {
- if (*s == '!')
- ++s;
- mode(0);
- execl("/bin/sh", "sh", "-c", s);
- }
- /* End of rz.c */
-