ecu - SCO XENIX V/{2,3}86 Extended CU part 32/47
Warren Tucker
wht at tridom.uucp
Thu Oct 12 05:08:45 AEST 1989
---- Cut Here and unpack ----
#!/bin/sh
# this is part 32 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file sea/sealink.doc continued
#
CurArch=32
if test ! -r s2_seq_.tmp
then echo "Please unpack part 1 first!"
exit 1; fi
( read Scheck
if test "$Scheck" != $CurArch
then echo "Please unpack part $Scheck next!"
exit 1;
else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file sea/sealink.doc"
sed 's/^X//' << 'SHAR_EOF' >> sea/sealink.doc
X
X 2) If you modify it in such a way that your version cannot converse
X with the original code as supplied by us, then you should refer to
X it as "SEAlink derived", or as a "variation of SEAlink", or words
X to that effect.
X
X In short, we're not asking for any money, but we'd like to get some
X credit for our work.
X
X
X This document is not meant to be a rigorous definition of the
X protocol. The code provided should serve to document the details and
X fine points of implementing SEAlink. We will, however, present a
X brief synopsis of how SEAlink adds sliding windows to XMODEM, and why
X XMODEM doesn't mind.
X
X First of all, SEAlink adds a block number to the ACK and NAK used in
X XMODEM.(1) We thus create "ACK/NAK packets", with the following
X structure:
X
X Byte 0: ACK, NAK, or C
X Byte 1: Block number
X Byte 2: One's compliment of block number
X
X This is identical in form to the first three bytes of a data packet,
X except that the SOH has been replaced with an ACK or NAK.(2)
X
X From the receiver's point of view, it does not matter if the trans-
X mitter is using sliding window or not. The receiver simply sends ACK
X and NAK packets as appropriate. Any XMODEM driver tested to date will
X simply ignore this excess data behind the ACK or NAK.
X
X From the transmitter's point of view, it just barely matters if the
X receiver can handle sliding window. The transmitter always acts as if
X it is sending sliding window, but varies the window size. If it is
X seeing valid block numbers and check values behind the received ACKs
X and NAKs, it sets the window size to six blocks. Otherwise, it sets
X the window size to one block. The result is that it only "sends
X ahead" if the receiver can handle it.
X
X It should be a fairly simple matter to apply the underlying SEAlink
X logic to almost any variant of XMODEM.
X
X
X The SEAlink routines provided in this package are also capable of
X passing system dependent information, such as true file size and time
X of last modification. This data is passed in a special header block.
X The header block looks exactly like any other block, except that it is
X block number zero.
X
X This is still backwards compatible with XMODEM, as a SEAlink receiver
X does not mind if block zero is missing, and any XMODEM receiver yet
X tested will regard block zero as a duplicate block and ACK it.
X
X The data portion of block zero contains the following fields:
X
X
X Offset Size Contents
X ====== ==== ========
X
X 0 4 Original file length.
X 4 4 Date and time file was last mofified, in
X seconds since 1979.
X 8 17 Original file name, as a null terminated
X string.
X 25 15 Name of transmitting program, as a null
X terminated string.
X 40 88 Null filler and expansion area.
X
X
X (1) XMODEM/CRC uses a "C" in place of a NAK to indicate CRC error
X detection. SEAlink follows this convention, and supports either
X checksum or CRC. For brevity, this document will use the term NAK
X to mean either a true NAK (hex 15) or a C (hex 43).
X (2) See previous footnote.
X
X Any field which the transmitter cannot support should be set to all
X zeros. Conversly, the receiver should ignore any null fields. The
X receiver may ignore any field which he cannot support.
X
X
X
X The routines enclosed in this package should be reasonably easy to
X implement in your application. We have attempted to exclude compiler
X dependent and system dependent logic from these routines.
X
X
X You will need to alter our references to our communications driver to
X conform to your own driver. The communications related routines we
X use are:
X
X com_putc(c) Output character c to comm port.
X
X int com_getc(t) Get character from comm port within t tenths
X of a second. Return EOF if time limit
X expires.
X
X com_dump() Discard any pending output without sending it.
X
X
X In addition, we use the following routines for controlling timed
X loops:
X
X long timerset(t) Set a timer. Returns a timer value which will
X expire in t tenths of a second.
X
X int timeup(z) Check a timer. Returns true if timer z has
X expired yet, or false otherwise.
X
X
X These routines also make reference to the following functions for
X system dependent information, which is optional:
X
X filestat(name,&fs) Read directory entry for a file and return
X system dependent information.
X
X setstamp(f,dtg) Set a file's date/time of last modification.
X
X
X
X
X The SEAlink implementation provided in this package is used by
X invoking the two primary routines:
X
X
X int xmtfile(name) /* transmit a file */
X char *name; /* name of file to transmit */
X
X This routine is used to send a file. One file is sent at a time. If
X the name is blank (name is null or *name points to a null), then an
X end of transmission marker is sent.
X
X This routine returns a one if the file is successfully transmitted, or
X a zero if a fatal error occurs.
X
X
X char *rcvfile(name) /* receive a file */
X char *name; /* name of file (optional) */
X
X This routine is used to receive a file. One file is received. If a
X name is specified for the file, then that name WILL be used, and any
X name sent by the transmitter will be ignored. If the name is blank
X (name is null or *name points to a null), then the transmitter must
X provide a name for the file.
X
X This routine returns a pointer to the name of the file that was
X received. If the file transfer is not successful, then a null pointer
X is returned.
X
X The pointer returned by rcvfile() points to a static data buffer.
X This does not have to be freed (and should not be), but it will be
X overwritten the next time rcvfile() is called.
X
X The rcvfile() function works on a temporary file whose name is the
X same as the final file, but with a dash ("-") added at the beginning.
X If a file transfer is aborted, then this temporary file will be
X retained. An aborted file transfer will not harm a pre-existing file
X of the same name.
X
X
X
X These routines can be used for either single or multiple file
X transfers.
X
X To send multiple files, send each file one by one until either a
X transmit fails or all files are sent. If all files are sent, then
X signal the end by calling xmtfile() with a null pointer.
X
X To receive multiple files, call rcvfile() repeatedly until it returns
X a null pointer.
X
X
X
X This package includes a demonstration program named CLINK (pronounced
X "clink"), which is a simple TTY program for doing SEAlink file
X transfers. CLINK does not perform any sort of terminal emulation
X whatsoever. However, she will make use of the ANSI.SYS screen driver
X if you have it installed.
X
X
X CLINK may be used in either of two ways: interactive mode or command
X mode.
X
X To use CLINK in the interactive mode, give the command "CLINK" with no
X arguments. Press the "ESCape" key to give a command to CLINK. The
X command "?" (question mark) instructs CLINK to tell you what commands
X she understands.
X
X To use CLINK in the command mode, give the command "CLINK" with an
X argument. There are three arguments you can give CLINK in the command
X mode. These are:
X
X 1) Receive files; Do this with a command of the form:
X
X CLINK R
X
X CLINK will attempt to receive one or more files from COM1, and
X will terminate as soon as all files are received, or when the
X transfer aborts.
X
X 2) Transmit files; Do this with a command of the form:
X
X CLINK T <filename> ...
X
X CLINK will attempt to transmit the listed files over COM1, and
X will terminate as soon as all files are sent, or the transfer is
X aborted. <filename> may be one or more file names with or without
X drive and path specifiers. Wildcards may be used.
X
X 3) Give help; If you type:
X
X CLINK ?
X
X or any invalid command, CLINK will display a brief reminder of
X what arguments she understands in command mode.
X
X In all cases, CLINK in the command mode will not alter the serial port
X other than to set eight data bits, one stop bit, and no parity. Any
X previously installed serial drivers will be replaced, and the baud
X rate will not be changed.
X
X
X
X CLINK comes with her own serial driver built in for the IBM PC family
X and true compatibles, but she is capable of using any standard FOSSIL
X driver.
X SHAR_EOF
echo "File sea/sealink.doc is complete"
chmod 0660 sea/sealink.doc || echo "restore of sea/sealink.doc fails"
echo "x - extracting sea/lint_args.h (Text)"
sed 's/^X//' << 'SHAR_EOF' > sea/lint_args.h &&
X/* CHK=0x23C0 */
X/*+-----------------------------------------------------------------------
X lint_args.h
X------------------------------------------------------------------------*/
X/*+:EDITS:*/
X/*:07-03-1989-22:58-wht------------- ecu 2.00 ---------------- */
X/*:05-29-1989-18:39-afterlint-creation */
X
X#ifndef BUILDING_LINT_ARGS
X#ifdef LINT_ARGS
X
X/* ecusea.c */
Xchar *receive_file(void);
Xchar *sf_state_text(int );
Xint cancel_transaction(int );
Xint main(int ,char * *,char * *);
Xint receive_block(char *);
Xint send_comm_block(char *,int );
Xint send_file(char *);
Xunsigned int lgetc_timeout(int );
Xunsigned short crc_update(int ,unsigned int );
Xvoid send_file_block(struct _iobuf *,int );
Xvoid set_sf_state(int ,int );
Xvoid set_utime_1980(char *,long );
Xvoid wait_for_rcvr_response(void);
Xvoid xmit_ack(int );
Xvoid xmit_cancel(void);
Xvoid xmit_nak(int );
X/* scurses.c */
Xchar *get_elapsed_time(long );
Xchar *get_tod(int ,char *);
Xint clear_area(struct _win_st *,int ,int ,int );
Xint clear_area_char(struct _win_st *,int ,int ,int ,char );
Xint report_comm_baud_rate(unsigned int );
Xint report_error_count(void);
Xint report_file_byte_io(long );
Xint report_file_open_length(long );
Xint report_file_rcv_started(char *,long ,long );
Xint report_protocol_crc_type(char *);
Xint report_rx_tx_count(void);
Xvoid report_file_close(void);
Xvoid report_file_open_tod(void);
Xvoid report_file_send_open(char *,struct stat *);
Xvoid report_init(char *);
Xvoid report_last_rxhdr(char *,int );
Xvoid report_last_txhdr(char *,int );
Xvoid report_mode(int );
Xvoid report_rx_ind(int );
Xvoid report_rxpos(long );
Xvoid report_str(char *,int );
Xvoid report_top_line(char *);
Xvoid report_transaction(char *);
Xvoid report_tx_ind(int );
Xvoid report_txpos(long );
Xvoid report_uninit(void);
X
X#else /* compiler doesn't know about prototyping */
X
X/* ecusea.c */
Xchar *receive_file();
Xchar *sf_state_text();
Xunsigned int lgetc_timeout();
Xunsigned short crc_update();
Xvoid send_file_block();
Xvoid set_sf_state();
Xvoid set_utime_1980();
Xvoid wait_for_rcvr_response();
Xvoid xmit_ack();
Xvoid xmit_cancel();
Xvoid xmit_nak();
X/* scurses.c */
Xchar *get_elapsed_time();
Xchar *get_tod();
Xvoid report_file_close();
Xvoid report_file_open_tod();
Xvoid report_file_send_open();
Xvoid report_init();
Xvoid report_last_rxhdr();
Xvoid report_last_txhdr();
Xvoid report_mode();
Xvoid report_rx_ind();
Xvoid report_rxpos();
Xvoid report_str();
Xvoid report_top_line();
Xvoid report_transaction();
Xvoid report_tx_ind();
Xvoid report_txpos();
Xvoid report_uninit();
X
X#endif /* LINT_ARGS */
X#endif /* BUILDING_LINT_ARGS */
X
X/* end of lint_args.h */
SHAR_EOF
chmod 0644 sea/lint_args.h || echo "restore of sea/lint_args.h fails"
echo "x - extracting uucp/dialhclone.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > uucp/dialhclone.c &&
X/* CHK=0x8345 */
X/* vi: set tabstop=4 shiftwidth=4: */
X/*+-------------------------------------------------------------------------
X dialhclone.c - SCO UUCP dialer program for several Hayes-type modems
X ...!gatech!emory!tridom!wht
X
X Configuration symbols:
X MCOM9624C Microcom AX/9624c
X MCOM2400 Microcom AX/2400
X USR2400 USR Courier 2400
X HDUU defined if HDB UUCP used on system
X
X This program assumes:
X Touch-Tone phone line
X S7 register set to 30 by mdsetup string (30 seconds timeout; see below)
X modem pre-configured (by switches or nvram) to drop carrier on DTR loss
X modem pre-configured to not reset to factory, nvram or switch settings
X on DTR loss
X
X Defined functions:
X _abort(sig)
X alrmint()
X call_ungetty(call_type)
X checkbaud(baud)
X cleanup(stat)
X main(argc,argv,envp)
X matchbaud(cbaud,low,high)
X mdflush()
X mdputc(lchar)
X mdputc_paced(pace_msec,lchar)
X mdputs(string)
X mdputs_paced(pace_msec,string)
X mdread(rtime)
X mdwrite(c)
X toprint(c)
X open_acu()
X substr(s,l)
X translate(ttab,str)
X
X
X Usage: dial ttyname telnumber speed
X dial -h ttyname speed
X
X Returns:
X 0x80 bit = 1 if connection failed
X 0x10 bit = 1 if line is also used for dialin #if !defined(HDUU)
X 0x0f if msb=1: error code
X if msb=0: connected baud rate (0=same as dialed baud)
X
X Note: getty calls the dialer with -h whenever it starts up
X on a line enabled in /etc/ttys and listed in Devices with
X this dialer.
X
X Error codes are split into two catagories: 1) (codes 0-11)
X Local problems are defined as tty port, or modem problems:
X problems that can be worked around by using a different device.
X 2) (codes 12-15) Remote problems are phone busy, no answer, etc.
X : attempts to connect to this remote system should be stopped.
X
X Note: This source file can be used both for the old UUCP and
X for the new HoneyDanBer UUCP. For the latter, HDUU may
X be defined to avoid calls to the HD ungetty program - which
X assumes that uugetty is used, and so simply returns SUCCESS.
X However, dialer binaries for the old UUCP are equally valid
X for the new HoneyDanBer UUCP (but make an unnecessary call
X to the null ungetty, supplied for backward compatibility).
X--------------------------------------------------------------------------*/
X/*+:EDITS:*/
X/*:07-23-1989-14:10-wht-consolidate dialers into one source */
X/*:07-23-1989-12:42hclone-improve integrity of -h code */
X/*:07-17-1989-13:51hclone-major rework */
X/*:07-02-1989-20:49hclone-beef up mdsetup */
X
X#include <stdio.h>
X#include <signal.h>
X#include <fcntl.h>
X#include <sys/types.h>
X#include <sys/ioctl.h>
X#include <termio.h>
X#include <errno.h>
X#include <ctype.h>
X
Xchar *toprint(unsigned char );
Xint mdread(int );
Xint mdflush(void);
Xvoid mdputc(char );
Xvoid mdputc_paced(int ,char );
Xvoid mdputs(char *);
Xvoid mdputs_paced(int ,char *);
Xint mdwrite(char *);
Xint call_ungetty(char );
Xvoid translate(char *,char *);
Xint _abort(int );
Xint open_acu(void);
Xint substr(char *,char *);
Xint alrmint(void);
Xint cleanup(int );
Xint checkbaud(unsigned int );
Xint matchbaud(int ,int ,int );
Xint main(int ,char * *,char * *);
X
X/* return codes: these are set up so that an abort signal at any time can */
X/* set the fail bit and return to the caller with the correct status */
X#define RC_BAUD 0x0f /* CBAUD connected at (0=same as dialed speed) */
X#define RC_ENABLED 0x10 /* enabled flag: 1 = ungetty -r required to */
X /* restore the line */
X#define RC_FAIL 0x80 /* 1 = failed to connect */
X
X/* return code error codes */
X#define RCE_NULL 0 /* general purpose or unknown error code */
X#define RCE_INUSE 1 /* line in use */
X#define RCE_SIG 2 /* signal aborted dialer */
X#define RCE_ARGS 3 /* invalid arguments */
X#define RCE_PHNO 4 /* invalid phone number */
X#define RCE_SPEED 5 /* invalid baud rate -or- bad connect baud */
X#define RCE_OPEN 6 /* can't open line */
X#define RCE_IOCTL 7 /* ioctl error */
X#define RCE_TIMOUT 8 /* timeout */
X#define RCE_NOTONE 9 /* no dial tone */
X#define RCE_BUSY 13 /* phone is busy */
X#define RCE_NOCARR 14 /* no carrier */
X#define RCE_ANSWER 15 /* no answer */
X
X#define SUCCESS 0
X
X/* ungetty return codes */
X#define UG_NOTENAB 0
X#define UG_ENAB 1
X#define UG_RESTART 1
X#define UG_FAIL 2
X
X#define SAME 0
X#define MAXLINE 80
X
X#define DEBUG(l, f, s) if (Debug >= l) fprintf(stderr, f, s)
X#if !defined(DBG)
X#define DBG 0
X#endif
X
X/* setup to call (S7=30 assumed by program) */
X#if defined(MCOM2400)
Xchar *mdsetup = "ATQ0V1E0TX4S0=0S2=43S7=30\\N0\\C1\\J1\r";
X#endif
X#if defined(MCOM9624C)
X#define MODEM9600
X#define MODEM19200
Xchar *mdsetup_NORM = "ATQ0E0V1&D2&C1S2=43S7=30\\N0\\Q0\\G0%C1%P2\r";
Xchar *mdsetup_REL = "ATQ0E0V1&D2&C1S2=43S7=30\\N3\\Q1\\G1%C1%P2\r";
Xchar *mdsetup;
X#endif
X#if defined(USR2400)
Xchar *mdsetup = "ATQ0V1E0TX4S0=0S2=43S7=30S11=47\r";
X#endif
X
Xchar *mdreset = "ATZ\r";
Xchar *mdvalid = "0123456789PpTtRrSsWw,!@*#()-"; /* phone number characters */
Xchar *mddialin = "ATS0=1Q1V0E0\r"; /* setup for dial in */
Xchar *mddsblesc = "ATS2=128E0\r"; /* disable escape sequence */
X
X#define DIAL_RETRY 4
X/*
X * Possible messages produced by modem.
X * We ignore RING since the HAYES only produces it when answering.
X */
X#define OK 0
X#define NOCARRIER 1
X#define ERROR 2
X#define BUSY 3
X#define NOANSWER 4
X#define NODIALTONE 5
X#define CONNECT600 6
X#define CONNECT1200 7
X#define CONNECT2400 8
X#define CONNECT4800 9
X#define CONNECT9600 10
X#define CONNECT19200 11
X#define CONNECT 12
X
Xchar *mdmsgs[] =
X{
X /* 0 */ "OK",
X /* 1 */ "NO CARRIER",
X /* 2 */ "ERROR",
X /* 3 */ "BUSY",
X /* 4 */ "NO ANSWER",
X /* 5 */ "NO DIALTONE",
X /* 6 */ "CONNECT 600",
X /* 7 */ "CONNECT 1200",
X /* 8 */ "CONNECT 2400",
X /* 8 */ "CONNECT 4800",
X /* 8 */ "CONNECT 9600",
X /* 8 */ "CONNECT 19200",
X /* 9 */ "CONNECT",
X 0
X};
X
Xchar *strchr();
Xint alrmint();
X
Xstruct termio acu_termio;
X
Xchar *acu; /* device to dial through */
Xint Debug = DBG; /* set when debug flag is given */
Xint dialing; /* set while modem is dialing */
Xint fd = -1; /* file descriptor for acu */
Xint retcode = RC_FAIL; /* return code */
Xint errflag = 0; /* set on errors */
Xint hangup_flag = 0; /* set to hangup modem */
Xint highbaud,lowbaud; /* baud rate limits */
Xchar *ungetty = "/usr/lib/uucp/ungetty";
X
X/*+-------------------------------------------------------------------------
X toprint(ch) - make a character "printable"
X--------------------------------------------------------------------------*/
Xchar *
Xtoprint(ch)
Xunsigned char ch;
X{
Xstatic char buffer[10];
Xchar *pnt;
X#define toprint(x) ((x)<' '?((x)+'@'):'?')
X
X pnt = buffer;
X if(iscntrl(ch) || !isprint(ch))
X {
X if(!isascii(ch))
X { /* Top bit is set */
X *pnt++ = 'M';
X *pnt++ = '-';
X ch = toascii(ch); /* Strip it */
X }
X if(iscntrl(ch))
X {
X *pnt++ = '^';
X ch = toprint(ch); /* Make it printable */
X }
X }
X *pnt++ = ch;
X *pnt = 0;
X return(buffer);
X} /* end of toprint */
X
X/*+-------------------------------------------------------------------------
X mdread(rtime)
X
X Reads from the ACU until it finds a valid response (found in mdmsgs),
X a numeric result code (e.g., S-register value),
X or times out after rtime seconds.
X
X Returns: The index in mdmsgs of the modem response found,
X numeric result + 128 or -1 on timeout.
X--------------------------------------------------------------------------*/
Xint
Xmdread(rtime)
Xint rtime;
X{
Xint itmp;
Xchar rdchar,**mp;
Xregister char *bp;
Xchar buf[MAXLINE];
Xchar *cptr;
Xchar s10[10];
X
X bp = buf;
X alarm(rtime);
X DEBUG(6,"MODEM returned %s","<<");
X
X while(read(fd,&rdchar,1) == 1)
X {
X *bp++ = (rdchar &= 0x7F);
X DEBUG(6,"%s",toprint(rdchar));
X if(bp >= buf + MAXLINE)
X {
X alarm(0);
X DEBUG(4,">>-%s\r\n","FAIL");
X return(-1);
X }
X if(rdchar == '\r')
X {
X cptr = buf;
X if(*cptr == 0x0A)
X cptr++;
X if(isdigit(*cptr))
X {
X alarm(0);
X DEBUG(6,">>-%s\r\n","OK");
X sprintf(s10,"%d",itmp = atoi(cptr));
X DEBUG(4,"got numeric result %s\r\n",s10);
X return(128 + itmp);
X }
X
X for(mp = mdmsgs; *mp; ++mp)
X {
X if(substr(*mp,buf) == 0)
X {
X alarm(0);
X DEBUG(6,">>-%s\r\n","OK");
X DEBUG(4,"got %s\r\n",mdmsgs[mp - mdmsgs]);
X return(mp - mdmsgs);
X }
X }
X bp = buf;
X }
X }
X
X alarm(0);
X DEBUG(6,">>-%s","FAIL");
X DEBUG(4," no response\r\n",0);
X return(-1);
X} /* end of mdread */
X
X/*+-------------------------------------------------------------------------
X mdflush() - flushes input clists for modem
X--------------------------------------------------------------------------*/
Xmdflush()
X{
X ioctl(fd,TCFLSH,0);
X} /* end of mdflush */
X
X/*+-----------------------------------------------------------------------
X mdputc(lchar) -- write lchar to comm line
X------------------------------------------------------------------------*/
Xvoid
Xmdputc(lchar)
Xchar lchar;
X{
X write(fd,&lchar,1);
X DEBUG(6,"%s",toprint(lchar));
X} /* end of mdputc */
X
X/*+-----------------------------------------------------------------------
X mdputc_paced(pace_msec,lchar) -- write lchar to comm line
X with time between each character
X------------------------------------------------------------------------*/
Xvoid
Xmdputc_paced(pace_msec,lchar)
Xregister pace_msec;
Xregister char lchar;
X{
X mdputc(lchar);
X nap((long)pace_msec);
X} /* end of mdputc_paced */
X
X/*+-----------------------------------------------------------------------
X mdputs(string) -- write string to comm line
X------------------------------------------------------------------------*/
Xvoid
Xmdputs(string)
Xregister char *string;
X{
X while(*string)
X mdputc(*string++);
X}
X
X/*+-----------------------------------------------------------------------
X mdputs_paced(pace_msec,string) -- write string to comm line
X with time between each character
X------------------------------------------------------------------------*/
Xvoid
Xmdputs_paced(pace_msec,string)
Xregister pace_msec;
Xregister char *string;
X{
X while(*string)
X mdputc_paced(pace_msec,*string++);
X
X} /* end of mdputs_paced */
X
X/*+-------------------------------------------------------------------------
X mdwrite(str) - output string to acu
X Returns: 0 on completion, -1 on write errors.
X--------------------------------------------------------------------------*/
Xmdwrite(str)
Xregister char *str;
X{
Xint err;
X
X nap(1000L);
X DEBUG(6,"Sent MODEM %s","<<");
X mdputs_paced(20,str);
X DEBUG(6,">>-%s\r\n","OK");
X return(0);
X
X} /* end of mdwrite */
X
X/*+-------------------------------------------------------------------------
X call_ungetty(call_type)
X
Xtype: 'a' - acquire acu
X 't' - test to see if acu should be returned
X 'r' - return acu
X--------------------------------------------------------------------------*/
Xcall_ungetty(call_type)
Xchar call_type;
X{
Xint itmp;
Xint pid;
Xint wait_status;
X
X if((pid = fork()) == 0)
X {
X if(Debug >= 5)
X fprintf(stderr,"dialer: %s %s called\r\n",ungetty,acu);
X switch(call_type)
X {
X case 'a':
X execl(ungetty,"ungetty",acu,NULL);
X break;
X case 't':
X execl(ungetty,"ungetty","-t",acu,NULL);
X }
X fprintf(stderr,"ungetty exec error\r\n");
X exit(-1);
X }
X
X while(((itmp = wait(&wait_status)) != pid) && itmp != -1)
X ;
X
X if(Debug >= 5)
X fprintf(stderr,"dialer: %s pid %d status 0x%04x\r\n",
X ungetty,itmp,wait_status);
X
X return(wait_status);
X} /* end of call_ungetty */
X
X/*+-------------------------------------------------------------------------
X translate(ttab,str)
X
X translate the pairs of characters present in the first string
X whenever the first of the pair appears in the second string.
X--------------------------------------------------------------------------*/
Xvoid
Xtranslate(ttab,str)
Xregister char *ttab,*str;
X{
X register char *s;
X
X for(;*ttab && *(ttab+1); ttab += 2)
X for(s=str;*s;s++)
X if(*ttab == *s)
X *s = *(ttab+1);
X} /* end of translate */
X
X/*+-------------------------------------------------------------------------
X _abort(sig)
X--------------------------------------------------------------------------*/
X_abort(sig)
Xint sig;
X{
X signal(SIGINT,SIG_IGN);
X if(fd != -1)
X {
X ioctl(fd,TCGETA,&acu_termio);
X acu_termio.c_cflag |= HUPCL; /* make sure modem hangs up */
X ioctl(fd,TCSETA,&acu_termio);
X close(fd);
X }
X if(sig)
X retcode |= (RC_FAIL | RCE_SIG);
X exit(retcode);
X} /* end of _abort */
X
X/*+-------------------------------------------------------------------------
X open_acu() - open the acu (modem)
X
Xreturns 'fd' of open modem line
X--------------------------------------------------------------------------*/
Xint
Xopen_acu()
X{
Xint fd1;
Xint fd2;
X
X /* open with O_NDELAY set or the open probably will hang */
X if((fd1 = open(acu,O_RDWR | O_NDELAY)) < 0)
X {
X fprintf(stderr,"dial: Can't open device: %s\r\n",acu);
X exit(RC_FAIL | RCE_OPEN | retcode);
X }
X
X signal(SIGINT,_abort);
X
X ioctl(fd1,TCGETA,&acu_termio);
X acu_termio.c_cflag &= ~(CBAUD | HUPCL);
X acu_termio.c_cflag |= CLOCAL | (hangup_flag ? (B2400|HUPCL) : highbaud);
X acu_termio.c_lflag &= ~ECHO;
X acu_termio.c_cc[VMIN] = '\1';
X acu_termio.c_cc[VTIME] = 0;
X
X if(errflag = ioctl(fd1,TCSETA,&acu_termio))
X {
X char buf[16];
X DEBUG(1,"dial: ioctl error on %s",acu);
X DEBUG(1," errno=%d\r\n",errno);
X cleanup(RC_FAIL | RCE_IOCTL | retcode);
X }
X /* reopen line with clocal so we can talk without carrier present */
X fd2 = fd1;
X if((fd1 = open(acu,O_RDWR)) < 0)
X {
X fprintf(stderr,"dial: Can't open device local: %s\r\n",acu);
X exit(RC_FAIL | RCE_OPEN | retcode);
X }
X close(fd2);
X return(fd1);
X
X} /* end of open_acu */
X
X/*+-------------------------------------------------------------------------
X substr(s,l)
X
X Function: Checks for the presence of the string pointed to by s
X somewhere within the string pointed to by l.
X
X Returns: 0 if found.
X -1 if not found.
X--------------------------------------------------------------------------*/
Xsubstr(s,l)
Xchar *s;
Xregister char *l;
X{
X int len;
X
X len = strlen(s);
X while((l = strchr(l,*s)) != NULL)
X {
X if(strncmp(s,l,len) == SAME)
X return(0);
X l++;
X }
X return(-1);
X} /* end of substr */
X
X/*+-------------------------------------------------------------------------
X alrmint() - catch alarm call (signal 14) and exit
X--------------------------------------------------------------------------*/
Xalrmint()
X{
X DEBUG(4,"\r\nTimeout waiting for %s\r\n",dialing ? "carrier" : "acu");
X cleanup(RC_FAIL | RCE_TIMOUT | retcode);
X} /* end of alrmint */
X
X/*+-------------------------------------------------------------------------
X cleanup(stat) - close device and exit
X--------------------------------------------------------------------------*/
Xcleanup(stat)
Xint stat;
X{
X if(stat & RC_FAIL)
X { /* if we failed, drop DTR (in _abort) */
X retcode = stat;
X _abort(0);
X }
X else
X exit(stat);
X} /* end of cleanup */
X
X/*+-------------------------------------------------------------------------
X checkbaud(baud) - check for valid baud rates
X Returns: The baud rate in struct termio c_cflag fashion
X--------------------------------------------------------------------------*/
Xcheckbaud(baud)
Xunsigned int baud;
X{
Xint b_value;
X
X switch(baud)
X {
X case 110: b_value = B110; break;
X case 300: b_value = B300; break;
X case 1200: b_value = B1200; break;
X case 2400: b_value = B2400; break;
X#if defined(MODEM9600)
X case 4800: b_value = B4800; break;
X case 9600: b_value = EXTA; break;
X#endif
X#if defined(MODEM19200)
X case 19200: b_value = EXTB; break;
X#endif
X default:
X fprintf(stderr,"dial: Bad speed: %d\r\n",baud);
X exit(RC_FAIL | RCE_SPEED);
X }
X return(b_value);
X} /* end of checkbaud */
X
X/*+-------------------------------------------------------------------------
SHAR_EOF
echo "End of part 32"
echo "File uucp/dialhclone.c is continued in part 33"
echo "33" > s2_seq_.tmp
exit 0
--
-------------------------------------------------------------------
Warren Tucker, Tridom Corporation ...!gatech!emory!tridom!wht
Ker-au'-lo-phon. An 8-foot partial flue-stop, having metal pipes
surmounted by adjustable rings, and with a hole bored near the top
of each pipe, producing a soft and "reedy" tone.
More information about the Alt.sources
mailing list