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- #define VERSION "sz 2.10 05-09-88"
- #define PUBDIR "/usr/spool/uucppublic"
-
- /*% cc -compat -M2 -Ox -K -i -DTXBSIZE=16384 -DNFGVMIN -DREADCHECK sz.c -lx -o sz; size sz
-
- Following is used for testing, might not be reasonable for production
- <-xtx-*> cc -Osal -DTXBSIZE=32768 -DSV sz.c -lx -o $B/sz; size $B/sz
-
- ****************************************************************************
- *
- * sz.c By Chuck Forsberg, Omen Technology INC
- *
- ****************************************************************************
- *
- * Typical Unix/Xenix/Clone compiles:
- *
- * cc -O sz.c -o sz USG (SYS III/V) Unix
- * cc -O -DSV sz.c -o sz Sys V Release 2 with non-blocking input
- * Define to allow reverse channel checking
- * cc -O -DV7 sz.c -o sz Unix Version 7, 2.8 - 4.3 BSD
- *
- * cc -O -K -i -DNFGVMIN -DREADCHECK sz.c -lx -o sz Classic Xenix
- *
- * ln sz sb **** All versions ****
- * ln sz sx **** All versions ****
- *
- ****************************************************************************
- *
- * Typical VMS compile and install sequence:
- *
- * define LNK$LIBRARY SYS$LIBRARY:VAXCRTL.OLB
- * cc sz.c
- * cc vvmodem.c
- * link sz,vvmodem
- * sz :== $disk$user2:[username.subdir]sz.exe
- *
- * If you feel adventureous, remove the #define BADSYNC line
- * immediately following the #ifdef vax11c line! Some VMS
- * systems know how to fseek, some don't.
- *
- ****************************************************************************
- *
- *
- * A program for Unix to send files and commands to computers running
- * Professional-YAM, PowerCom, YAM, IMP, or programs supporting Y/XMODEM.
- *
- * Sz uses buffered I/O to greatly reduce CPU time compared to UMODEM.
- *
- * USG UNIX (3.0) ioctl conventions courtesy Jeff Martin
- *
- * 2.1x hacks to avoid VMS fseek() bogosity, allow streaming if input from pipe
- * -DBADSEEK -DTXBSIZE=32768
- * 2.x has mods for VMS flavor
- *
- * 1.34 implements tx backchannel garbage count and ZCRCW after ZRPOS
- * in accordance with the 7-31-87 ZMODEM Protocol Description
- */
-
-
- char *substr(), *getenv();
-
- #ifdef vax11c
- #define BADSEEK
- #define TXBSIZE 32768 /* Must be power of two, < MAXINT */
- #include <types.h>
- #include <stat.h>
- #define LOGFILE "szlog.tmp"
- #include <stdio.h>
- #include <signal.h>
- #include <setjmp.h>
- #include <ctype.h>
- #include <errno.h>
- #define OS "VMS"
- #define READCHECK
- #define BUFWRITE
- #define iofd
- extern int errno;
- #define SS_NORMAL SS$_NORMAL
- #define xsendline(c) sendline(c)
-
-
- #else /* vax11c */
-
-
- #define SS_NORMAL 0
- #define LOGFILE "/tmp/szlog"
- #include <stdio.h>
- #include <signal.h>
- #include <setjmp.h>
- #include <ctype.h>
- #include <errno.h>
- extern int errno;
-
- #define sendline(c) putchar(c & 0377)
- #define xsendline(c) putchar(c)
-
- #endif
-
- #define PATHLEN 256
- #define OK 0
- #define FALSE 0
- #define TRUE 1
- #define ERROR (-1)
- /* 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 WANTG 0107 /* Send G not NAK to get nonstop batch xmsn */
- #define TIMEOUT (-2)
- #define RCDO (-3)
- #define RETRYMAX 10
-
-
- #define HOWMANY 2
- int Zmodem=0; /* ZMODEM protocol requested by receiver */
- unsigned Baudrate=2400; /* Default, should be set by first mode() call */
- unsigned Txwindow; /* Control the size of the transmitted window */
- unsigned Txwspac; /* Spacing between zcrcq requests */
- unsigned Txwcnt; /* Counter used to space ack requests */
- long Lrxpos; /* Receiver's last reported offset */
- int errors;
-
- #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"
-
- int Filesleft;
- long Totalleft;
-
- /*
- * Attention string to be executed by receiver to interrupt streaming data
- * when an error is detected. A pause (0336) may be needed before the
- * ^C (03) or after it.
- */
- #ifdef READCHECK
- char Myattn[] = { 0 };
- #else
- #ifdef USG
- char Myattn[] = { 03, 0336, 0 };
- #else
- char Myattn[] = { 0 };
- #endif
- #endif
-
- FILE *in;
-
- #ifdef BADSEEK
- int Canseek = 0; /* 1: Can seek 0: only rewind -1: neither (pipe) */
- #ifndef TXBSIZE
- #define TXBSIZE 16384 /* Must be power of two, < MAXINT */
- #endif
- #else
- int Canseek = 1; /* 1: Can seek 0: only rewind -1: neither (pipe) */
- #endif
-
- #ifdef TXBSIZE
- #define TXBMASK (TXBSIZE-1)
- char Txb[TXBSIZE]; /* Circular buffer for file reads */
- char *txbuf = Txb; /* Pointer to current file segment */
- #else
- char txbuf[1024];
- #endif
- long vpos = 0; /* Number of bytes read from file */
-
- char Lastrx;
- char Crcflg;
- int Verbose=0;
- int Modem2=0; /* XMODEM Protocol - don't send pathnames */
- int Restricted=0; /* restricted; no /.. or ../ in filenames */
- int Quiet=0; /* overrides logic that would otherwise set verbose */
- int Ascii=0; /* Add CR's for brain damaged programs */
- int Fullname=0; /* transmit full pathname */
- int Unlinkafter=0; /* Unlink file after it is sent */
- int Dottoslash=0; /* Change foo.bar.baz to foo/bar/baz */
- int firstsec;
- int errcnt=0; /* number of files unreadable */
- int blklen=128; /* length of transmitted records */
- int Optiong; /* Let it rip no wait for sector ACK's */
- int Eofseen; /* EOF seen on input set by zfilbuf */
- int BEofseen; /* EOF seen on input set by fooseek */
- int Totsecs; /* total number of sectors this file */
- int Filcnt=0; /* count of number of files opened */
- int Lfseen=0;
- unsigned Rxbuflen = 16384; /* Receiver's max buffer length */
- int Tframlen = 0; /* Override for tx frame length */
- int blkopt=0; /* Override value for zmodem blklen */
- int Rxflags = 0;
- long bytcnt;
- int Wantfcs32 = TRUE; /* want to send 32 bit FCS */
- char Lzconv; /* Local ZMODEM file conversion request */
- char Lzmanag; /* Local ZMODEM file management request */
- int Lskipnocor;
- char Lztrans;
- char zconv; /* ZMODEM file conversion request */
- char zmanag; /* ZMODEM file management request */
- char ztrans; /* ZMODEM file transport request */
- int Command; /* Send a command, then exit. */
- char *Cmdstr; /* Pointer to the command string */
- int Cmdtries = 11;
- int Cmdack1; /* Rx ACKs command, then do it */
- int Exitcode;
- int Test; /* 1= Force receiver to send Attn, etc with qbf. */
- /* 2= Character transparency test */
- char *qbf="The quick brown fox jumped over the lazy dog's back 1234567890\r\n";
- long Lastread; /* Beginning offset of last buffer read */
- int Lastn; /* Count of last buffer read or -1 */
- int Dontread; /* Don't read the buffer, it's still there */
- long Lastsync; /* Last offset to which we got a ZRPOS */
- int Beenhereb4; /* How many times we've been ZRPOS'd same place */
-
- jmp_buf tohere; /* For the interrupt on RX timeout */
- jmp_buf intrjmp; /* For the interrupt on RX CAN */
-
- /* called by signal interrupt or terminate to clean things up */
- bibi(n)
- {
- canit(); fflush(stdout); mode(0);
- fprintf(stderr, "sz: caught signal %d; exiting\n", n);
- if (n == SIGQUIT)
- abort();
- if (n == 99)
- fprintf(stderr, "mode(2) in rbsb.c not implemented!!\n");
- cucheck();
- exit(128+n);
- }
- /* Called when ZMODEM gets an interrupt (^X) */
- onintr()
- {
- signal(SIGINT, SIG_IGN);
- longjmp(intrjmp, -1);
- }
-
- int Zctlesc; /* Encode control characters */
- int Nozmodem = 0; /* If invoked as "sb" */
- char *Progname = "sz";
- int Zrwindow = 1400; /* RX window size (controls garbage count) */
- #include "zm.c"
-
-
- main(argc, argv)
- char *argv[];
- {
- register char *cp;
- register npats;
- int dm;
- char **patts;
- static char xXbuf[BUFSIZ];
-
- if ((cp = getenv("ZNULLS")) && *cp)
- Znulls = atoi(cp);
- if ((cp=getenv("SHELL")) && (substr(cp, "rsh") || substr(cp, "rksh")))
- Restricted=TRUE;
- from_cu();
- chkinvok(argv[0]);
-
- Rxtimeout = 600;
- npats=0;
- if (argc<2)
- usage();
- setbuf(stdout, xXbuf);
- while (--argc) {
- cp = *++argv;
- if (*cp++ == '-' && *cp) {
- while ( *cp) {
- switch(*cp++) {
- case '\\':
- *cp = toupper(*cp); continue;
- case '+':
- Lzmanag = ZMAPND; break;
- #ifdef CSTOPB
- case '2':
- Twostop = TRUE; break;
- #endif
- case 'a':
- Lzconv = ZCNL;
- Ascii = TRUE; break;
- case 'b':
- Lzconv = ZCBIN; break;
- case 'C':
- if (--argc < 1) {
- usage();
- }
- Cmdtries = atoi(*++argv);
- break;
- case 'i':
- Cmdack1 = ZCACK1;
- /* **** FALL THROUGH TO **** */
- case 'c':
- if (--argc != 1) {
- usage();
- }
- Command = TRUE;
- Cmdstr = *++argv;
- break;
- case 'd':
- ++Dottoslash;
- /* **** FALL THROUGH TO **** */
- case 'f':
- Fullname=TRUE; break;
- case 'e':
- Zctlesc = 1; break;
- case 'k':
- blklen=1024; break;
- case 'L':
- if (--argc < 1) {
- usage();
- }
- blkopt = atoi(*++argv);
- if (blkopt<24 || blkopt>1024)
- usage();
- break;
- case 'l':
- if (--argc < 1) {
- usage();
- }
- Tframlen = atoi(*++argv);
- if (Tframlen<32 || Tframlen>1024)
- usage();
- break;
- case 'N':
- Lzmanag = ZMNEWL; break;
- case 'n':
- Lzmanag = ZMNEW; break;
- case 'o':
- Wantfcs32 = FALSE; break;
- case 'p':
- Lzmanag = ZMPROT; break;
- case 'r':
- Lzconv = ZCRESUM;
- case 'q':
- Quiet=TRUE; Verbose=0; break;
- case 't':
- if (--argc < 1) {
- usage();
- }
- Rxtimeout = atoi(*++argv);
- if (Rxtimeout<10 || Rxtimeout>1000)
- usage();
- break;
- case 'T':
- if (++Test > 1) {
- chartest(1); chartest(2);
- mode(0); exit(0);
- }
- break;
- #ifndef vax11c
- case 'u':
- ++Unlinkafter; break;
- #endif
- case 'v':
- ++Verbose; break;
- case 'w':
- if (--argc < 1) {
- usage();
- }
- Txwindow = atoi(*++argv);
- if (Txwindow < 256)
- Txwindow = 256;
- Txwindow = (Txwindow/64) * 64;
- Txwspac = Txwindow/4;
- if (blkopt > Txwspac
- || (!blkopt && Txwspac < 1024))
- blkopt = Txwspac;
- break;
- case 'X':
- ++Modem2; break;
- case 'Y':
- Lskipnocor = TRUE;
- /* **** FALLL THROUGH TO **** */
- case 'y':
- Lzmanag = ZMCLOB; break;
- default:
- usage();
- }
- }
- }
- else if ( !npats && argc>0) {
- if (argv[0][0]) {
- npats=argc;
- patts=argv;
- #ifndef vax11c
- if ( !strcmp(*patts, "-"))
- iofd = 1;
- #endif
- }
- }
- }
- if (npats < 1 && !Command && !Test)
- usage();
- if (Verbose) {
- if (freopen(LOGFILE, "a", stderr)==NULL) {
- printf("Can't open log file %s\n",LOGFILE);
- exit(0200);
- }
- setbuf(stderr, NULL);
- }
- 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);
- }
- if ( !Fromcu)
- signal(SIGQUIT, SIG_IGN);
- signal(SIGTERM, bibi);
-
- if ( !Modem2) {
- if (!Nozmodem) {
- printf("rz\r"); fflush(stdout);
- }
- countem(npats, patts);
- if (!Nozmodem) {
- stohdr(0L);
- if (Command)
- Txhdr[ZF0] = ZCOMMAND;
- zshhdr(ZRQINIT, Txhdr);
- }
- }
- fflush(stdout);
-
- if (Command) {
- if (getzrxinit()) {
- Exitcode=0200; canit();
- }
- else if (zsendcmd(Cmdstr, 1+strlen(Cmdstr))) {
- Exitcode=0200; canit();
- }
- } else if (wcsend(npats, patts)==ERROR) {
- Exitcode=0200;
- canit();
- }
- fflush(stdout);
- mode(0);
- dm = ((errcnt != 0) | Exitcode);
- if (dm) {
- cucheck(); exit(dm);
- }
- exit(SS_NORMAL);
- /*NOTREACHED*/
- }
-
- wcsend(argc, argp)
- char *argp[];
- {
- register n;
-
- Crcflg=FALSE;
- firstsec=TRUE;
- bytcnt = -1;
- for (n=0; n<argc; ++n) {
- Totsecs = 0;
- if (wcs(argp[n])==ERROR)
- return ERROR;
- }
- Totsecs = 0;
- if (Filcnt==0) { /* bitch if we couldn't open ANY files */
- if ( !Modem2) {
- Command = TRUE;
- Cmdstr = "echo \"sz: Can't open any requested files\"";
- if (getnak()) {
- Exitcode=0200; canit();
- }
- if (!Zmodem)
- canit();
- else if (zsendcmd(Cmdstr, 1+strlen(Cmdstr))) {
- Exitcode=0200; canit();
- }
- Exitcode = 1; return OK;
- }
- canit();
- fprintf(stderr,"\r\nCan't open any requested files.\r\n");
- return ERROR;
- }
- if (Zmodem)
- saybibi();
- else if ( !Modem2)
- wctxpn("");
- return OK;
- }
-
- wcs(oname)
- char *oname;
- {
- register c;
- register char *p;
- struct stat f;
- char name[PATHLEN];
-
- strcpy(name, oname);
-
- if (Restricted) {
- /* restrict pathnames to current tree or uucppublic */
- if ( substr(name, "../")
- || (name[0]== '/' && strncmp(name, PUBDIR, strlen(PUBDIR))) ) {
- canit();
- fprintf(stderr,"\r\nsz:\tSecurity Violation\r\n");
- return ERROR;
- }
- }
-
- if ( !strcmp(oname, "-")) {
- if ((p = getenv("ONAME")) && *p)
- strcpy(name, p);
- else
- sprintf(name, "s%d.sz", getpid());
- in = stdin;
- }
- else if ((in=fopen(oname, "r"))==NULL) {
- ++errcnt;
- return OK; /* pass over it, there may be others */
- }
- BEofseen = Eofseen = 0; vpos = 0;
- Lastread = 0; Lastn = -1; Dontread = FALSE;
- /* Check for directory or block special files */
- fstat(fileno(in), &f);
- c = f.st_mode & S_IFMT;
- if (c == S_IFDIR || c == S_IFBLK) {
- fclose(in);
- return OK;
- }
-
- ++Filcnt;
- switch (wctxpn(name)) {
- case ERROR:
- return ERROR;
- case ZSKIP:
- return OK;
- }
- if (!Zmodem && wctx(f.st_size)==ERROR)
- return ERROR;
- #ifndef vax11c
- if (Unlinkafter)
- unlink(oname);
- #endif
- return 0;
- }
-
- /*
- * generate and transmit pathname block consisting of
- * pathname (null terminated),
- * file length, mode time and file mode in octal
- * as provided by the Unix fstat call.
- * N.B.: modifies the passed name, may extend it!
- */
- wctxpn(name)
- char *name;
- {
- register char *p, *q;
- char name2[PATHLEN];
- struct stat f;
-
- if (Modem2) {
- if ((in!=stdin) && *name && fstat(fileno(in), &f)!= -1) {
- fprintf(stderr, "Sending %s, %ld blocks: ",
- name, f.st_size>>7);
- }
- fprintf(stderr, "Give your local XMODEM receive command now.\r\n");
- return OK;
- }
- zperr("Awaiting pathname nak for %s", *name?name:"<END>");
- if ( !Zmodem)
- if (getnak())
- return ERROR;
-
- q = (char *) 0;
- if (Dottoslash) { /* change . to . */
- for (p=name; *p; ++p) {
- if (*p == '/')
- q = p;
- else if (*p == '.')
- *(q=p) = '/';
- }
- if (q && strlen(++q) > 8) { /* If name>8 chars */
- q += 8; /* make it .ext */
- strcpy(name2, q); /* save excess of name */
- *q = '.';
- strcpy(++q, name2); /* add it back */
- }
- }
-
- for (p=name, q=txbuf ; *p; )
- if ((*q++ = *p++) == '/' && !Fullname)
- q = txbuf;
- *q++ = 0;
- p=q;
- while (q < (txbuf + 1024))
- *q++ = 0;
- if (!Ascii && (in!=stdin) && *name && fstat(fileno(in), &f)!= -1)
- sprintf(p, "%lu %lo %o 0 %d %ld", f.st_size, f.st_mtime,
- f.st_mode, Filesleft, Totalleft);
- Totalleft -= f.st_size;
- if (--Filesleft <= 0)
- Totalleft = 0;
- if (Totalleft < 0)
- Totalleft = 0;
-
- /* force 1k blocks if name won't fit in 128 byte block */
- if (txbuf[125])
- blklen=1024;
- else { /* A little goodie for IMP/KMD */
- txbuf[127] = (f.st_size + 127) >>7;
- txbuf[126] = (f.st_size + 127) >>15;
- }
- if (Zmodem)
- return zsendfile(txbuf, 1+strlen(p)+(p-txbuf));
- if (wcputsec(txbuf, 0, 128)==ERROR)
- return ERROR;
- return OK;
- }
-
- getnak()
- {
- register firstch;
-
- Lastrx = 0;
- for (;;) {
- switch (firstch = readline(800)) {
- case ZPAD:
- if (getzrxinit())
- return ERROR;
- Ascii = 0; /* Receiver does the conversion */
- return FALSE;
- case TIMEOUT:
- zperr("Timeout on pathname");
- return TRUE;
- case WANTG:
- #ifdef MODE2OK
- mode(2); /* Set cbreak, XON/XOFF, etc. */
- #endif
- Optiong = TRUE;
- blklen=1024;
- case WANTCRC:
- Crcflg = TRUE;
- case NAK:
- return FALSE;
- case CAN:
- if ((firstch = readline(20)) == CAN && Lastrx == CAN)
- return TRUE;
- default:
- break;
- }
- Lastrx = firstch;
- }
- }
-
-
- wctx(flen)
- long flen;
- {
- register int thisblklen;
- register int sectnum, attempts, firstch;
- long charssent;
-
- charssent = 0; firstsec=TRUE; thisblklen = blklen;
- vfile("wctx:file length=%ld", flen);
-
- while ((firstch=readline(Rxtimeout))!=NAK && firstch != WANTCRC
- && firstch != WANTG && firstch!=TIMEOUT && firstch!=CAN)
- ;
- if (firstch==CAN) {
- zperr("Receiver CANcelled");
- return ERROR;
- }
- if (firstch==WANTCRC)
- Crcflg=TRUE;
- if (firstch==WANTG)
- Crcflg=TRUE;
- sectnum=0;
- for (;;) {
- if (flen <= (charssent + 896L))
- thisblklen = 128;
- if ( !filbuf(txbuf, thisblklen))
- break;
- if (wcputsec(txbuf, ++sectnum, thisblklen)==ERROR)
- return ERROR;
- charssent += thisblklen;
- }
- fclose(in);
- attempts=0;
- do {
- purgeline();
- sendline(EOT);
- fflush(stdout);
- ++attempts;
- }
- while ((firstch=(readline(Rxtimeout)) != ACK) && attempts < RETRYMAX);
- if (attempts == RETRYMAX) {
- zperr("No ACK on EOT");
- return ERROR;
- }
- else
- return OK;
- }
-
- wcputsec(buf, sectnum, cseclen)
- char *buf;
- int sectnum;
- int cseclen; /* data length of this sector to send */
- {
- register checksum, wcj;
- register char *cp;
- unsigned oldcrc;
- int firstch;
- int attempts;
-
- firstch=0; /* part of logic to detect CAN CAN */
-
- if (Verbose>2)
- fprintf(stderr, "Sector %3d %2dk\n", Totsecs, Totsecs/8 );
- else if (Verbose>1)
- fprintf(stderr, "\rSector %3d %2dk ", Totsecs, Totsecs/8 );
- for (attempts=0; attempts <= RETRYMAX; attempts++) {
- Lastrx= firstch;
- sendline(cseclen==1024?STX:SOH);
- sendline(sectnum);
- sendline(-sectnum -1);
- oldcrc=checksum=0;
- for (wcj=cseclen,cp=buf; --wcj>=0; ) {
- sendline(*cp);
- oldcrc=updcrc((0377& *cp), oldcrc);
- checksum += *cp++;
- }
- if (Crcflg) {
- oldcrc=updcrc(0,updcrc(0,oldcrc));
- sendline((int)oldcrc>>8);
- sendline((int)oldcrc);
- }
- else
- sendline(checksum);
-
- if (Optiong) {
- firstsec = FALSE; return OK;
- }
- firstch = readline(Rxtimeout);
- gotnak:
- switch (firstch) {
- case CAN:
- if(Lastrx == CAN) {
- cancan:
- zperr("Cancelled"); return ERROR;
- }
- break;
- case TIMEOUT:
- zperr("Timeout on sector ACK"); continue;
- case WANTCRC:
- if (firstsec)
- Crcflg = TRUE;
- case NAK:
- zperr("NAK on sector"); continue;
- case ACK:
- firstsec=FALSE;
- Totsecs += (cseclen>>7);
- return OK;
- case ERROR:
- zperr("Got burst for sector ACK"); break;
- default:
- zperr("Got %02x for sector ACK", firstch); break;
- }
- for (;;) {
- Lastrx = firstch;
- if ((firstch = readline(Rxtimeout)) == TIMEOUT)
- break;
- if (firstch == NAK || firstch == WANTCRC)
- goto gotnak;
- if (firstch == CAN && Lastrx == CAN)
- goto cancan;
- }
- }
- zperr("Retry Count Exceeded");
- return ERROR;
- }
-
- /* fill buf with count chars padding with ^Z for CPM */
- filbuf(buf, count)
- register char *buf;
- {
- register c, m;
-
- if ( !Ascii) {
- m = read(fileno(in), buf, count);
- if (m <= 0)
- return 0;
- while (m < count)
- buf[m++] = 032;
- return count;
- }
- m=count;
- if (Lfseen) {
- *buf++ = 012; --m; Lfseen = 0;
- }
- while ((c=getc(in))!=EOF) {
- if (c == 012) {
- *buf++ = 015;
- if (--m == 0) {
- Lfseen = TRUE; break;
- }
- }
- *buf++ =c;
- if (--m == 0)
- break;
- }
- if (m==count)
- return 0;
- else
- while (--m>=0)
- *buf++ = CPMEOF;
- return count;
- }
-
- /* Fill buffer with blklen chars */
- zfilbuf()
- {
- int n;
-
- #ifdef TXBSIZE
- /* We assume request is within buffer, or just beyond */
- txbuf = Txb + (bytcnt & TXBMASK);
- if (vpos <= bytcnt) {
- n = fread(txbuf, 1, blklen, in);
- vpos += n;
- if (n < blklen)
- Eofseen = 1;
- return n;
- }
- if (vpos >= (bytcnt+blklen))
- return blklen;
- /* May be a short block if crash recovery etc. */
- Eofseen = BEofseen;
- return (vpos - bytcnt);
- #else
- n = fread(txbuf, 1, blklen, in);
- if (n < blklen)
- Eofseen = 1;
- return n;
- #endif
- }
-
- #ifdef TXBSIZE
- fooseek(fptr, pos, whence)
- FILE *fptr;
- long pos;
- {
- int m, n;
-
- vfile("fooseek: pos =%lu vpos=%lu Canseek=%d", pos, vpos, Canseek);
- /* Seek offset < current buffer */
- if (pos < (vpos -TXBSIZE +1024)) {
- BEofseen = 0;
- if (Canseek > 0) {
- vpos = pos & ~TXBMASK;
- if (vpos >= pos)
- vpos -= TXBSIZE;
- if (fseek(fptr, vpos, 0))
- return 1;
- }
- else if (Canseek == 0)
- if (fseek(fptr, vpos = 0L, 0))
- return 1;
- else
- return 1;
- while (vpos <= pos) {
- n = fread(Txb, 1, TXBSIZE, fptr);
- vpos += n;
- vfile("n=%d vpos=%ld", n, vpos);
- if (n < TXBSIZE) {
- BEofseen = 1;
- break;
- }
- }
- vfile("vpos=%ld", vpos);
- return 0;
- }
- /* Seek offset > current buffer (crash recovery, etc.) */
- if (pos > vpos) {
- if (Canseek)
- if (fseek(fptr, vpos = (pos & ~TXBMASK), 0))
- return 1;
- while (vpos <= pos) {
- txbuf = Txb + (vpos & TXBMASK);
- m = TXBSIZE - (vpos & TXBMASK);
- n = fread(txbuf, 1, m, fptr);
- vpos += n;
- vfile("bo=%d n=%d vpos=%ld", txbuf-Txb, n, vpos);
- if (m < n) {
- BEofseen = 1;
- break;
- }
- }
- return 0;
- }
- /* Seek offset is within current buffer */
- vfile("vpos=%ld", vpos);
- return 0;
- }
- #define fseek fooseek
- #endif
-
-
- /* VARARGS1 */
- vfile(f, a, b, c)
- register char *f;
- {
- if (Verbose > 2) {
- fprintf(stderr, f, a, b, c);
- fprintf(stderr, "\n");
- }
- }
-
-
- alrm()
- {
- longjmp(tohere, -1);
- }
-
-
- #ifndef vax11c
- /*
- * readline(timeout) reads character(s) from file descriptor 0
- * timeout is in tenths of seconds
- */
- readline(timeout)
- {
- register int c;
- static char byt[1];
-
- fflush(stdout);
- if (setjmp(tohere)) {
- zperr("TIMEOUT");
- return TIMEOUT;
- }
- c = timeout/10;
- if (c<2)
- c=2;
- if (Verbose>5) {
- fprintf(stderr, "Timeout=%d Calling alarm(%d) ", timeout, c);
- }
- signal(SIGALRM, alrm); alarm(c);
- c=read(iofd, byt, 1);
- alarm(0);
- if (Verbose>5)
- fprintf(stderr, "ret %x\n", byt[0]);
- if (c<1)
- return TIMEOUT;
- return (byt[0]&0377);
- }
-
- flushmo()
- {
- fflush(stdout);
- }
-
-
- purgeline()
- {
- #ifdef USG
- ioctl(iofd, TCFLSH, 0);
- #else
- lseek(iofd, 0L, 2);
- #endif
- }
- #endif
-
- /* 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
- };
-
- #ifdef vax11c
- raw_wbuf(strlen(canistr), canistr);
- purgeline();
- #else
- printf(canistr);
- fflush(stdout);
- #endif
- }
-
-
- /*
- * Log an error
- */
- /*VARARGS1*/
- 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");
- }
-
- /*
- * 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;
- }
-
- char *babble[] = {
- #ifdef vax11c
- " Send file(s) with ZMODEM Protocol",
- "Usage: sz [-2+abdefkLlNnquvwYy] [-] file ...",
- " sz [-2Ceqv] -c COMMAND",
- " \\ Force next option letter to upper case",
- #else
- "Send file(s) with ZMODEM/YMODEM/XMODEM Protocol",
- " (Y) = Option applies to YMODEM only",
- " (Z) = Option applies to ZMODEM only",
- "Usage: sz [-2+abdefkLlNnquvwYy] [-] file ...",
- " sz [-2Ceqv] -c COMMAND",
- " sb [-2adfkquv] [-] file ...",
- " sx [-2akquv] [-] file",
- #endif
- #ifdef CSTOPB
- " 2 Use 2 stop bits",
- #endif
- " + Append to existing destination file (Z)",
- " a (ASCII) change NL to CR/LF",
- " b Binary file transfer override",
- " c send COMMAND (Z)",
- #ifndef vax11c
- " d Change '.' to '/' in pathnames (Y/Z)",
- #endif
- " e Escape all control characters (Z)",
- " f send Full pathname (Y/Z)",
- " i send COMMAND, ack Immediately (Z)",
- " k Send 1024 byte packets (Y)",
- " L N Limit subpacket length to N bytes (Z)",
- " l N Limit frame length to N bytes (l>=L) (Z)",
- " n send file if source newer (Z)",
- " N send file if source newer or longer (Z)",
- " o Use 16 bit CRC instead of 32 bit CRC (Z)",
- " p Protect existing destination file (Z)",
- " r Resume/Recover interrupted file transfer (Z)",
- " q Quiet (no progress reports)",
- #ifndef vax11c
- " u Unlink file after transmission",
- #endif
- " v Verbose - provide debugging information",
- " w N Window is N bytes (Z)",
- " Y Yes, overwrite existing file, skip if not present at rx (Z)",
- " y Yes, overwrite existing file (Z)",
- "- as pathname sends standard input as sPID.sz or environment ONAME",
- ""
- };
-
- usage()
- {
- char **pp;
-
- for (pp=babble; **pp; ++pp)
- fprintf(stderr, "%s\n", *pp);
- fprintf(stderr, "%s for %s by Chuck Forsberg, Omen Technology INC\n",
- VERSION, OS);
- fprintf(stderr, "\t\t\042The High Reliability Software\042\n");
- cucheck();
- exit(SS_NORMAL);
- }
-
- /*
- * Get the receiver's init parameters
- */
- getzrxinit()
- {
- register n;
- struct stat f;
-
- for (n=10; --n>=0; ) {
-
- switch (zgethdr(Rxhdr, 1)) {
- case ZCHALLENGE: /* Echo receiver's challenge numbr */
- stohdr(Rxpos);
- zshhdr(ZACK, Txhdr);
- continue;
- case ZCOMMAND: /* They didn't see out ZRQINIT */
- stohdr(0L);
- zshhdr(ZRQINIT, Txhdr);
- continue;
- case ZRINIT:
- Rxflags = 0377 & Rxhdr[ZF0];
- Txfcs32 = (Wantfcs32 && (Rxflags & CANFC32));
- Zctlesc |= Rxflags & TESCCTL;
- Rxbuflen = (0377 & Rxhdr[ZP0])+((0377 & Rxhdr[ZP1])<<8);
- if ( !(Rxflags & CANFDX))
- Txwindow = 0;
- vfile("Rxbuflen=%d Tframlen=%d", Rxbuflen, Tframlen);
- if ( !Fromcu)
- signal(SIGINT, SIG_IGN);
- #ifdef MODE2OK
- mode(2); /* Set cbreak, XON/XOFF, etc. */
- #endif
- #ifndef READCHECK
- #ifndef USG
- /* Use 1024 byte frames if no sample/interrupt */
- if (Rxbuflen < 32 || Rxbuflen > 1024) {
- Rxbuflen = 1024;
- vfile("Rxbuflen=%d", Rxbuflen);
- }
- #endif
- #endif
- /* Override to force shorter frame length */
- if (Rxbuflen && (Rxbuflen>Tframlen) && (Tframlen>=32))
- Rxbuflen = Tframlen;
- if ( !Rxbuflen && (Tframlen>=32) && (Tframlen<=1024))
- Rxbuflen = Tframlen;
- vfile("Rxbuflen=%d", Rxbuflen);
-
- #ifndef vax11c
- /* If using a pipe for testing set lower buf len */
- fstat(iofd, &f);
- if ((f.st_mode & S_IFMT) != S_IFCHR) {
- Rxbuflen = 1024;
- }
- #endif
- #ifdef BADSEEK
- Canseek = 0;
- Txwindow = TXBSIZE - 1024;
- Txwspac = TXBSIZE/4;
- #endif
- /*
- * If input is not a regular file, force ACK's to
- * prevent running beyond the buffer limits
- */
- if ( !Command) {
- fstat(fileno(in), &f);
- if ((f.st_mode & S_IFMT) != S_IFREG) {
- Canseek = -1;
- #ifdef TXBSIZE
- Txwindow = TXBSIZE - 1024;
- Txwspac = TXBSIZE/4;
- #else
- Rxbuflen = 1024;
- #endif
- }
- }
- /* Set initial subpacket length */
- if (blklen < 1024) { /* Command line override? */
- if (Baudrate > 300)
- blklen = 256;
- if (Baudrate > 1200)
- blklen = 512;
- if (Baudrate > 2400)
- blklen = 1024;
- }
- if (Rxbuflen && blklen>Rxbuflen)
- blklen = Rxbuflen;
- if (blkopt && blklen > blkopt)
- blklen = blkopt;
- vfile("Rxbuflen=%d blklen=%d", Rxbuflen, blklen);
- vfile("Txwindow = %u Txwspac = %d", Txwindow, Txwspac);
-
- return (sendzsinit());
- case ZCAN:
- case TIMEOUT:
- return ERROR;
- case ZRQINIT:
- if (Rxhdr[ZF0] == ZCOMMAND)
- continue;
- default:
- zshhdr(ZNAK, Txhdr);
- continue;
- }
- }
- return ERROR;
- }
-
- /* Send send-init information */
- sendzsinit()
- {
- register c;
-
- if (Myattn[0] == '\0' && (!Zctlesc || (Rxflags & TESCCTL)))
- return OK;
- errors = 0;
- for (;;) {
- stohdr(0L);
- if (Zctlesc) {
- Txhdr[ZF0] |= TESCCTL; zshhdr(ZSINIT, Txhdr);
- }
- else
- zsbhdr(ZSINIT, Txhdr);
- zsdata(Myattn, 1+strlen(Myattn), ZCRCW);
- c = zgethdr(Rxhdr, 1);
- switch (c) {
- case ZCAN:
- return ERROR;
- case ZACK:
- return OK;
- default:
- if (++errors > 19)
- return ERROR;
- continue;
- }
- }
- }
-
- /* Send file name and related info */
- zsendfile(buf, blen)
- char *buf;
- {
- register c;
-
- for (;;) {
- Txhdr[ZF0] = Lzconv; /* file conversion request */
- Txhdr[ZF1] = Lzmanag; /* file management request */
- if (Lskipnocor)
- Txhdr[ZF1] |= ZMSKNOLOC;
- Txhdr[ZF2] = Lztrans; /* file transport request */
- Txhdr[ZF3] = 0;
- zsbhdr(ZFILE, Txhdr);
- zsdata(buf, blen, ZCRCW);
- again:
- c = zgethdr(Rxhdr, 1);
- switch (c) {
- case ZRINIT:
- while ((c = readline(50)) > 0)
- if (c == ZPAD) {
- goto again;
- }
- /* **** FALL THRU TO **** */
- default:
- continue;
- case ZCAN:
- case TIMEOUT:
- case ZABORT:
- case ZFIN:
- return ERROR;
- case ZSKIP:
- fclose(in); return c;
- case ZRPOS:
- /*
- * Suppress zcrcw request otherwise triggered by
- * lastyunc==bytcnt
- */
- if (Rxpos && fseek(in, Rxpos, 0))
- return ERROR;
- Lastsync = (bytcnt = Txpos = Rxpos) -1;
- Dontread = FALSE;
- return zsendfdata();
- }
- }
- }
-
- /* Send the data in the file */
- zsendfdata()
- {
- register c, e, n;
- register newcnt;
- register long tcount = 0;
- int junkcount; /* Counts garbage chars received by TX */
- static int tleft = 6; /* Counter for test mode */
-
- Lrxpos = 0;
- junkcount = 0;
- Beenhereb4 = FALSE;
- somemore:
- if (setjmp(intrjmp)) {
- waitack:
- junkcount = 0;
- c = getinsync(0);
- gotack:
- switch (c) {
- default:
- case ZCAN:
- fclose(in);
- return ERROR;
- case ZSKIP:
- fclose(in);
- return c;
- case ZACK:
- case ZRPOS:
- break;
- case ZRINIT:
- return OK;
- }
- #ifdef READCHECK
- /*
- * If the reverse channel can be tested for data,
- * this logic may be used to detect error packets
- * sent by the receiver, in place of setjmp/longjmp
- * rdchk(fdes) returns non 0 if a character is available
- */
- while (rdchk(iofd)) {
- #ifdef SV
- switch (checked)
- #else
- switch (readline(1))
- #endif
- {
- case CAN:
- case ZPAD:
- c = getinsync(1);
- goto gotack;
- case XOFF: /* Wait a while for an XON */
- case XOFF|0200:
- readline(100);
- }
- }
- #endif
- }
-
- if ( !Fromcu)
- signal(SIGINT, onintr);
- newcnt = Rxbuflen;
- Txwcnt = 0;
- stohdr(Txpos);
- zsbhdr(ZDATA, Txhdr);
-
- /*
- * Special testing mode. This should force receiver to Attn,ZRPOS
- * many times. Each time the signal should be caught, causing the
- * file to be started over from the beginning.
- */
- if (Test) {
- if ( --tleft)
- while (tcount < 20000) {
- printf(qbf); fflush(stdout);
- tcount += strlen(qbf);
- #ifdef READCHECK
- while (rdchk(iofd)) {
- #ifdef SV
- switch (checked)
- #else
- switch (readline(1))
- #endif
- {
- case CAN:
- case ZPAD:
- #ifdef TCFLSH
- ioctl(iofd, TCFLSH, 1);
- #endif
- goto waitack;
- case XOFF: /* Wait for XON */
- case XOFF|0200:
- readline(100);
- }
- }
- #endif
- }
- signal(SIGINT, SIG_IGN); canit();
- sleep(3); purgeline(); mode(0);
- printf("\nsz: Tcount = %ld\n", tcount);
- if (tleft) {
- printf("ERROR: Interrupts Not Caught\n");
- exit(1);
- }
- exit(SS_NORMAL);
- }
-
- do {
- if (Dontread) {
- n = Lastn;
- } else {
- n = zfilbuf();
- Lastread = Txpos; Lastn = n;
- }
- Dontread = FALSE;
- if (Eofseen)
- e = ZCRCE;
- else if (junkcount > 3)
- e = ZCRCW;
- else if (bytcnt == Lastsync)
- e = ZCRCW;
- else if (Rxbuflen && (newcnt -= n) <= 0)
- e = ZCRCW;
- else if (Txwindow && (Txwcnt += n) >= Txwspac) {
- Txwcnt = 0; e = ZCRCQ;
- }
- else
- e = ZCRCG;
- if (Verbose>1)
- fprintf(stderr, "\r%7ld ZMODEM%s ",
- Txpos, Crc32t?" CRC-32":"");
- zsdata(txbuf, n, e);
- bytcnt = Txpos += n;
- if (e == ZCRCW)
- goto waitack;
- #ifdef READCHECK
- /*
- * If the reverse channel can be tested for data,
- * this logic may be used to detect error packets
- * sent by the receiver, in place of setjmp/longjmp
- * rdchk(fdes) returns non 0 if a character is available
- */
- fflush(stdout);
- while (rdchk(iofd)) {
- #ifdef SV
- switch (checked)
- #else
- switch (readline(1))
- #endif
- {
- case CAN:
- case ZPAD:
- c = getinsync(1);
- if (c == ZACK)
- break;
- #ifdef TCFLSH
- ioctl(iofd, TCFLSH, 1);
- #endif
- /* zcrce - dinna wanna starta ping-pong game */
- zsdata(txbuf, 0, ZCRCE);
- goto gotack;
- case XOFF: /* Wait a while for an XON */
- case XOFF|0200:
- readline(100);
- default:
- ++junkcount;
- }
- }
- #endif /* READCHECK */
- if (Txwindow) {
- while ((tcount = Txpos - Lrxpos) >= Txwindow) {
- vfile("%ld window >= %u", tcount, Txwindow);
- if (e != ZCRCQ)
- zsdata(txbuf, 0, e = ZCRCQ);
- c = getinsync(1);
- if (c != ZACK) {
- #ifdef TCFLSH
- ioctl(iofd, TCFLSH, 1);
- #endif
- zsdata(txbuf, 0, ZCRCE);
- goto gotack;
- }
- }
- vfile("window = %ld", tcount);
- }
- } while (!Eofseen);
- if ( !Fromcu)
- signal(SIGINT, SIG_IGN);
-
- for (;;) {
- stohdr(Txpos);
- zsbhdr(ZEOF, Txhdr);
- switch (getinsync(0)) {
- case ZACK:
- continue;
- case ZRPOS:
- goto somemore;
- case ZRINIT:
- return OK;
- case ZSKIP:
- fclose(in);
- return c;
- default:
- fclose(in);
- return ERROR;
- }
- }
- }
-
- /*
- * Respond to receiver's complaint, get back in sync with receiver
- */
- getinsync(flag)
- {
- register c;
-
- for (;;) {
- if (Test) {
- printf("\r\n\n\n***** Signal Caught *****\r\n");
- Rxpos = 0; c = ZRPOS;
- } else
- c = zgethdr(Rxhdr, 0);
- switch (c) {
- case ZCAN:
- case ZABORT:
- case ZFIN:
- case TIMEOUT:
- return ERROR;
- case ZRPOS:
- /* ************************************* */
- /* If sending to a buffered modem, you */
- /* might send a break at this point to */
- /* dump the modem's buffer. */
- if (Lastn >= 0 && Lastread == Rxpos) {
- Dontread = TRUE;
- } else {
- clearerr(in); /* In case file EOF seen */
- if (fseek(in, Rxpos, 0))
- return ERROR;
- Eofseen = 0;
- }
- bytcnt = Lrxpos = Txpos = Rxpos;
- if (Lastsync == Rxpos) {
- if (++Beenhereb4 > 4)
- if (blklen > 32)
- blklen /= 2;
- }
- Lastsync = Rxpos;
- return c;
- case ZACK:
- Lrxpos = Rxpos;
- if (flag || Txpos == Rxpos)
- return ZACK;
- continue;
- case ZRINIT:
- case ZSKIP:
- fclose(in);
- return c;
- case ERROR:
- default:
- zsbhdr(ZNAK, Txhdr);
- continue;
- }
- }
- }
-
-
- /* Say "bibi" to the receiver, try to do it cleanly */
- saybibi()
- {
- for (;;) {
- stohdr(0L); /* CAF Was zsbhdr - minor change */
- zshhdr(ZFIN, Txhdr); /* to make debugging easier */
- switch (zgethdr(Rxhdr, 0)) {
- case ZFIN:
- sendline('O'); sendline('O'); flushmo();
- case ZCAN:
- case TIMEOUT:
- return;
- }
- }
- }
-
- /* Local screen character display function */
- bttyout(c)
- {
- if (Verbose)
- putc(c, stderr);
- }
-
- /* Send command and related info */
- zsendcmd(buf, blen)
- char *buf;
- {
- register c;
- long cmdnum;
-
- cmdnum = getpid();
- errors = 0;
- for (;;) {
- stohdr(cmdnum);
- Txhdr[ZF0] = Cmdack1;
- zsbhdr(ZCOMMAND, Txhdr);
- zsdata(buf, blen, ZCRCW);
- listen:
- Rxtimeout = 100; /* Ten second wait for resp. */
- c = zgethdr(Rxhdr, 1);
-
- switch (c) {
- case ZRINIT:
- goto listen; /* CAF 8-21-87 */
- case ERROR:
- case TIMEOUT:
- if (++errors > Cmdtries)
- return ERROR;
- continue;
- case ZCAN:
- case ZABORT:
- case ZFIN:
- case ZSKIP:
- case ZRPOS:
- return ERROR;
- default:
- if (++errors > 20)
- return ERROR;
- continue;
- case ZCOMPL:
- Exitcode = Rxpos;
- saybibi();
- return OK;
- case ZRQINIT:
- #ifdef vax11c /* YAMP :== Yet Another Missing Primitive */
- return ERROR;
- #else
- vfile("******** RZ *******");
- system("rz");
- vfile("******** SZ *******");
- goto listen;
- #endif
- }
- }
- }
-
- /*
- * If called as sb use YMODEM protocol
- */
- chkinvok(s)
- char *s;
- {
- #ifdef vax11c
- Progname = "sz";
- #else
- 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]=='s' && s[1]=='b') {
- Nozmodem = TRUE; blklen=1024;
- }
- if (s[0]=='s' && s[1]=='x') {
- Modem2 = TRUE;
- }
- #endif
- }
-
- countem(argc, argv)
- register char **argv;
- {
- register c;
- struct stat f;
-
- for (Totalleft = 0, Filesleft = 0; --argc >=0; ++argv) {
- f.st_size = -1;
- if (Verbose>2) {
- fprintf(stderr, "\nCountem: %03d %s ", argc, *argv);
- fflush(stderr);
- }
- if (access(*argv, 04) >= 0 && stat(*argv, &f) >= 0) {
- c = f.st_mode & S_IFMT;
- if (c != S_IFDIR && c != S_IFBLK) {
- ++Filesleft; Totalleft += f.st_size;
- }
- }
- if (Verbose>2)
- fprintf(stderr, " %ld", f.st_size);
- }
- if (Verbose>2)
- fprintf(stderr, "\ncountem: Total %d %ld\n",
- Filesleft, Totalleft);
- }
-
- chartest(m)
- {
- register n;
-
- mode(m);
- printf("\r\n\nCharacter Transparency Test Mode %d\r\n", m);
- printf("If Pro-YAM/ZCOMM is not displaying ^M hit ALT-V NOW.\r\n");
- printf("Hit Enter.\021"); fflush(stdout);
- readline(500);
-
- for (n = 0; n < 256; ++n) {
- if (!(n%8))
- printf("\r\n");
- printf("%02x ", n); fflush(stdout);
- sendline(n); flushmo();
- printf(" "); fflush(stdout);
- if (n == 127) {
- printf("Hit Enter.\021"); fflush(stdout);
- readline(500);
- printf("\r\n"); fflush(stdout);
- }
- }
- printf("\021\r\nEnter Characters, echo is in hex.\r\n");
- printf("Hit SPACE or pause 40 seconds for exit.\r\n");
-
- while (n != TIMEOUT && n != ' ') {
- n = readline(400);
- printf("%02x\r\n", n);
- fflush(stdout);
- }
- printf("\r\nMode %d character transparency test ends.\r\n", m);
- fflush(stdout);
- }
-
- /* End of sz.c */
-