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BSD 4_1c_2 development
[unix-history] / usr / src / usr.lib / lpr / lpd.c
/* lpd.c 4.17 83/03/09 */
/*
* lpd -- remote spooling line-printer daemon
*
* Recorded into c from assembly. Part of the code is stolen
* from the dat-phone daemon.
* Runs set user-id root in order to connect to remote machines
* without passwords.
* NOTE: the lock file is used to pass information to lpq and lprm.
* it does not need to be removed because file locks are dynamic.
*/
#include <signal.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sgtty.h>
#ifdef BSD41C
#include <netdb.h>
#else
#include <net/in.h>
#endif
#include <errno.h>
#include <wait.h>
#include "lp.local.h"
#include "getq.h"
/*
* Some utilities used by lpd
*/
#define PR "/bin/pr"
#define MAIL "/usr/lib/sendmail"
#define DORETURN 0 /* absorb fork error */
#define DOABORT 1 /* abort lpd if dofork fails */
#define DOUNLOCK 2 /* remove lock file before aborting */
char line[132]; /* line from control file */
char title[80]; /* ``pr'' title */
FILE *cfp; /* control file */
int pfd; /* printer file descriptor */
int ofd; /* output filter file descriptor */
int lfd; /* lock file descriptor */
int pid; /* id of lpd process */
int prchild; /* id of pr process */
int child; /* id of any filters */
int ofilter; /* id of output filter, if any */
int tof = 1; /* top of form; init true if open does ff */
int remote; /* non zero if sending files to remote */
int DU; /* daeomon user-id */
char *DN; /* daemon path name */
char *LP; /* line printer device name */
char *RM; /* remote machine name */
char *RP; /* remote printer name */
char *RL; /* path name of rlpr on remote machine */
char *LO; /* lock file name */
char *ST; /* status file name */
char *SD; /* spool directory */
char *AF; /* accounting file */
char *LF; /* log file for error messages */
char *OF; /* name of ouput filter (one only) */
char *IF; /* name of input filter (per job) */
char *TF; /* name of troff filter */
char *VF; /* name of vplot filter */
char *CF; /* name of cifplot filter */
char *PF; /* name of vrast filter */
char *FF; /* form feed string */
char *TR; /* trailer string to be output when Q empties */
short SF; /* suppress FF on each print job */
short SH; /* suppress header page */
short SB; /* short banner instead of normal header */
short PW; /* page width */
short PL; /* page length */
short BR; /* baud rate if lp is a tty */
short FC; /* flags to clear if lp is a tty */
short FS; /* flags to set if lp is a tty */
extern banner(); /* big character printer */
char logname[32]; /* user's login name */
char hostname[32]; /* user's host machine */
char jobname[32]; /* job or file name */
char class[32]; /* classification field */
char width[10] = "-w"; /* page width for `pr' */
char length[10] = "-l"; /* page length for `pr' */
char *name; /* name of program */
char *printer; /* name of printer */
extern errno;
char *rindex();
char *pgetstr();
/*ARGSUSED*/
main(argc, argv)
char *argv[];
{
struct stat stb;
register struct queue *q, **qp;
struct queue **queue;
register int i, nitems;
long pidoff;
int cleanup();
/*
* set-up controlled environment; trap bad signals
*/
signal(SIGHUP, SIG_IGN);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
signal(SIGTERM, cleanup); /* for use with lprm */
name = argv[0];
printer = argv[1];
init(); /* set up capabilities */
for (i = 0; i < NOFILE; i++)
(void) close(i);
(void) open("/dev/null", 0); /* standard input */
(void) open(LF, 1); /* standard output */
(void) dup2(1, 2); /* standard error */
(void) lseek(1, 0L, 2); /* append if into a file */
/*
* uses short form file names
*/
if (chdir(SD) < 0) {
log("cannot chdir to %s", SD);
exit(1);
}
#ifdef BSD41C
umask(0);
if ((lfd = open(LO, FWRONLY|FCREATE|FTRUNCATE|FEXLOCK|FNBLOCK, FILMOD)) < 0) {
if (errno == EWOULDBLOCK) /* active deamon present */
exit(0);
log("cannot create %s", LO);
exit(1);
}
#else
if (stat(LO, &stb) >= 0 || (lfd = creat(LO, 0444)) < 0)
exit(0);
#endif
/*
* kill the parent so the user's shell can function
*/
#ifdef BSD41C
if (dofork(DOABORT))
#else
if (dofork(DOUNLOCK))
#endif
exit(0);
/*
* write process id for others to know
*/
pid = getpid();
sprintf(line, "%u\n", pid);
pidoff = i = strlen(line);
if (write(lfd, line, i) != i)
log("cannot write daemon pid");
/*
* acquire line printer or remote connection
*/
if (*LP) {
for (i = 1; ; i = i < 256 ? i << 1 : i) {
pfd = open(LP, 1);
if (pfd >= 0)
break;
if (errno == ENOENT) {
log("cannot open %s", LP);
#ifndef BSD41C
unlink(LO);
#endif
exit(1);
}
if (i == 1)
status("waiting for %s to become ready (offline ?)", printer);
sleep(i);
}
if (isatty(pfd))
setty();
}
else if (RM != NULL) {
#ifdef BSD41C
struct servent *sp;
sp = getservbyname("shell", "tcp");
if (sp == NULL) {
log("shell/tcp: unknown service");
exit(1);
}
#endif
strcpy(line, RL);
if (RP != NULL)
(void) sprintf(line+strlen(line), " -P%s", RP);
for (i = 1; ; i = i < 512 ? i << 1 : i) {
#ifdef BSD41C
pfd = rcmd(&RM, sp->s_port, "root", "root", line, 0);
#else
pfd = rcmd(&RM, IPPORT_CMDSERVER, "root", "root", line, 0);
#endif
if (pfd >= 0)
break;
if (i == 1)
status("waiting for %s to come up", RM);
sleep(i);
}
response();
remote = 1;
}
else {
log("no line printer device or remote machine name");
#ifndef BSD41C
(void) unlink(LO);
#endif
exit(1);
}
/*
* Start running as daemon instead of root
*/
setuid(DU);
/*
* Start up an output filter, if needed.
*/
if (OF) {
int p[2];
char *cp;
pipe(p);
#ifdef BSD41C
if ((ofilter = dofork(DOABORT)) == 0) { /* child */
#else
if ((ofilter = dofork(DOUNLOCK)) == 0) { /* child */
#endif
dup2(p[0], 0); /* pipe is std in */
dup2(pfd, 1); /* printer is std out */
for (i = 3; i < NOFILE; i++)
(void) close(i);
if ((cp = rindex(OF, '/')) == NULL)
cp = OF;
else
cp++;
execl(OF, cp, 0);
log("can't execl output filter %s", OF);
exit(1);
}
(void) close(p[0]); /* close input side */
ofd = p[1]; /* use pipe for output */
} else {
ofd = pfd;
ofilter = 0;
}
/*
* search the spool directory for work and sort by queue order.
*/
again:
if ((nitems = getq(&queue)) < 0) {
log("can't scan spool directory %s", SD);
#ifndef BSD41C
(void) unlink(LO);
#endif
exit(1);
}
if (nitems == 0) { /* EOF => no work to do */
if (!SF && !tof)
(void) write(ofd, FF, strlen(FF));
if (TR != NULL) /* output trailer */
(void) write(ofd, TR, strlen(TR));
#ifndef BSD41C
(void) unlink(LO);
#endif
exit(0);
}
/*
* we found something to do now do it --
* write the name of the current control file into the lock file
* so the spool queue program can tell what we're working on
*/
if (!remote)
status("%s is ready and printing", printer);
else
status("sending to %s", RM);
for (qp = queue; nitems--; ) {
q = *qp++;
if (stat(q->q_name, &stb) < 0)
continue;
lseek(lfd, pidoff, 0);
sprintf(line, "%s\n", q->q_name);
i = strlen(line);
if (write(lfd, line, i) != i)
log("can't write (%d) control file name", errno);
if (!remote)
i = doit(q->q_name);
else
i = sendit(q->q_name);
if (i > 0) { /* restart daemon to reprint job */
#ifndef BSD41C
unlink(LO);
#endif
execl(DN, DN, printer);
log("cannot execl %d", DN);
exit(1);
}
free(q);
}
free((char *)queue);
goto again;
}
char fonts[4][50]; /* fonts for troff */
static char ifonts[4][50] = {
"/usr/lib/vfont/R",
"/usr/lib/vfont/I",
"/usr/lib/vfont/B",
"/usr/lib/vfont/S"
};
/*
* The remaining part is the reading of the control file (cf)
* and performing the various actions.
* Returns 0 if everthing was OK and 1 if we should try to reprint the job.
*/
doit(file)
char *file;
{
register int i;
int bombed = 0;
/*
* open control file
*/
if ((cfp = fopen(file, "r")) == NULL) {
log("control file (%s) open failure <errno = %d>", file, errno);
return(0);
}
/*
* Reset troff fonts.
*/
for (i = 0; i < 4; i++)
strcpy(fonts[i], ifonts[i]);
/*
* read the control file for work to do
*
* file format -- first character in the line is a command
* rest of the line is the argument.
* valid commands are:
*
* J -- "job name" on banner page
* C -- "class name" on banner page
* L -- "literal" user's name to print on banner
* T -- "title" for pr
* H -- "host name" of machine where lpr was done
* P -- "person" user's login name
* I -- "indent" changes default indents driver
* must have stty/gtty avaialble
* f -- "file name" name of file to print
* 1 -- "R font file" for troff
* 2 -- "I font file" for troff
* 3 -- "B font file" for troff
* 4 -- "S font file" for troff
* N -- "name" of file (used by lpq)
* U -- "unlink" name of file to remove
* (after we print it. (Pass 2 only)).
* M -- "mail" to user when done printing
*
* getline reads a line and expands tabs to blanks
*/
/* pass 1 */
while (getline())
switch (line[0]) {
case 'H':
strcpy(hostname, line+1);
if (class[0] == '\0')
strcpy(class, line+1);
continue;
case 'P':
strcpy(logname, line+1);
continue;
case 'J':
if (line[1] != '\0' )
strcpy(jobname, line+1);
else
strcpy(jobname, " ");
continue;
case 'C':
if (line[1] != '\0' )
strcpy(class, line+1);
else if (class[0] == '\0')
gethostname(class, sizeof (class));
continue;
case 'T': /* header title for pr */
strcpy(title, line+1);
continue;
case 'L': /* identification line */
if (!SH)
banner(line+1, jobname);
continue;
case '1': /* troff fonts */
case '2':
case '3':
case '4':
strcpy(fonts[line[0]-'1'], line+1);
continue;
case 'W': /* page width */
strcpy(width+2, line+1);
continue;
default:
if ((i = dump(line[0], line+1)) > 0)
return(1);
else if (i < 0)
bombed = 1;
title[0] = '\0';
continue;
case 'I':
case 'N':
case 'U':
case 'M':
continue;
}
/* pass 2 */
fseek(cfp, 0L, 0);
while (getline())
switch (line[0]) {
case 'M':
sendmail(bombed);
continue;
case 'U':
(void) unlink(line+1);
}
/*
* clean-up incase another control file exists
*/
(void) fclose(cfp);
(void) unlink(file);
return(0);
}
/*
* Print a file.
* Set up the chain [ PR [ | IF ] ] or [ {IF | TF | CF | VF} ].
* Return -1 if a non-recoverable error occured, 1 if a recoverable error and
* 0 if all is well.
*/
dump(format, file)
int format;
char *file;
{
register int n, fi, fo;
register char *prog;
char *av[15], buf[BUFSIZ];
int pid, p[2];
union wait status;
if ((fi = open(file, 0)) < 0) {
log("%s: open failure <errno = %d>", file, errno);
return(-1);
}
if (!SF && !tof) /* start on a fresh page */
(void) write(ofd, FF, strlen(FF));
if (IF == NULL && (format == 'f' || format == 'l')) {
while ((n = read(fi, buf, BUFSIZ)) > 0)
if (write(ofd, buf, n) != n) {
(void) close(fi);
return(1);
}
tof = 0;
(void) close(fi);
return(0);
}
switch (format) {
case 'p': /* print file using 'pr' */
if (IF == NULL) { /* use output filter */
prog = PR;
av[0] = "pr";
av[1] = width;
av[2] = length;
av[3] = "-h";
av[4] = *title ? title : " ";
av[5] = 0;
goto start;
}
pipe(p);
if ((prchild = dofork(DORETURN)) == 0) { /* child */
dup2(fi, 0); /* file is stdin */
dup2(p[1], 1); /* pipe is stdout */
for (n = 3; n < NOFILE; n++)
(void) close(n);
execl(PR, "pr", width, length, "-h", *title ? title : " ", 0);
log("cannot execl %s", PR);
exit(2);
}
(void) close(p[1]); /* close output side */
(void) close(fi);
fi = p[0]; /* use pipe for input */
case 'f': /* print plain text file */
prog = IF;
av[1] = width;
av[2] = length;
n = 3;
fo = pfd;
break;
case 'l': /* like 'f' but pass control characters */
prog = IF;
av[1] = "-l";
av[2] = width;
av[3] = length;
n = 4;
fo = pfd;
break;
case 't': /* print troff output */
(void) unlink(".railmag");
fo = creat(".railmag", 0666);
for (n = 0; n < 4; n++) {
if (fonts[n][0] != '/')
(void) write(fo, "/usr/lib/vfont/", 15);
(void) write(fo, fonts[n], strlen (fonts[n]));
(void) write(fo, "\n", 1);
}
(void) close(fo);
prog = TF;
n = 1;
fo = pfd;
break;
case 'c': /* print cifplot output */
prog = CF;
n = 1;
fo = pfd;
break;
case 'v': /* print vplot output (plain raster file) */
prog = VF;
n = 1;
fo = pfd;
break;
default:
log("illegal format character '%c'", format);
return(-1);
}
if ((av[0] = rindex(prog, '/')) != NULL)
av[0]++;
else
av[0] = prog;
av[n++] = "-n";
av[n++] = logname;
av[n++] = "-h";
av[n++] = hostname;
av[n++] = AF;
av[n++] = 0;
start:
if (ofilter > 0) { /* stop output filter */
write(ofd, "\031\1", 2);
while ((pid = wait3(&status, WUNTRACED, 0)) > 0 && pid != ofilter)
;
if (status.w_stopval != WSTOPPED) {
log("output filter died (%d)", status.w_retcode);
return(1);
}
}
if ((child = dofork(DORETURN)) == 0) { /* child */
dup2(fi, 0);
dup2(fo, 1);
for (n = 3; n < NOFILE; n++)
(void) close(n);
execv(prog, av);
log("cannot execl %s", prog);
exit(2); /* execl failed or not one of above cases. */
}
(void) close(fi);
if (child < 0) {
child = 0;
return(-1);
}
while ((pid = wait(&status)) > 0 && pid != child)
;
tof = 1;
child = 0;
prchild = 0;
if (ofilter > 0) { /* restart output filter */
if (kill(ofilter, SIGCONT) < 0) {
log("cannot continue output filter");
#ifndef BSD41C
unlink(LO);
#endif
exit(1);
}
}
if (!WIFEXITED(status) || status.w_retcode > 1) {
log("Daemon Filter Malfunction");
return(-1);
} else if (status.w_retcode == 1)
return(1);
return(0);
}
/*
* Getline reads a line from the control file, removes tabs, converts
* new-line to null and leaves it in line.
* returns 0 at EOF or the number of characters read.
*/
getline()
{
register int linel = 0;
register char *lp = line;
register c;
while ((c = getc(cfp)) != '\n') {
if (c == EOF)
return(0);
if (c == '\t') {
do {
*lp++ = ' ';
linel++;
} while ((linel & 07) != 0);
continue;
}
*lp++ = c;
linel++;
}
*lp++ = '\0';
return(linel);
}
/*
* Send the daemon control file (cf) and any data files.
*/
sendit(file)
char *file;
{
register int linelen, i;
char last[132];
/*
* open control file
*/
if ((cfp = fopen(file, "r")) == NULL) {
log("control file (%s) open failure <errno = %d>", file, errno);
return(0);
}
/*
* read the control file for work to do
*
* file format -- first character in the line is a command
* rest of the line is the argument.
* commands of interest are:
*
* f -- "file name" name of file to print
* U -- "unlink" name of file to remove
* (after we print it. (Pass 2 only)).
*/
/*
* pass 1
*/
while (getline()) {
again:
if (line[0] >= 'a' && line[0] <= 'z') {
strcpy(last, line);
while (linelen = getline())
if (strcmp(last, line))
break;
if (send('\3', last+1) > 0)
return(1);
if (linelen)
goto again;
break;
}
}
if (send('\2', file) > 0)
return(1);
/*
* pass 2
*/
fseek(cfp, 0L, 0);
while (getline())
if (line[0] == 'U')
(void) unlink(line+1);
/*
* clean-up incase another control file exists
*/
(void) fclose(cfp);
(void) unlink(file);
return(0);
}
/*
* Send a data file to the remote machine and spool it.
* Return positive if we should try resending.
*/
send(type, file)
char type, *file;
{
register int f, i, amt;
struct stat stb;
char buf[BUFSIZ];
int sizerr;
if ((f = open(file, 0)) < 0 || fstat(f, &stb) < 0) {
log("file (%s) open failure <errno = %d>", file, errno);
return(-1);
}
(void) sprintf(buf, "%c%d %s\n", type, stb.st_size, file);
if (write(pfd, buf, strlen(buf)) < 0)
return(1);
if (response())
return(1);
sizerr = 0;
for (i = 0; i < stb.st_size; i += BUFSIZ) {
amt = BUFSIZ;
if (i + amt > stb.st_size)
amt = stb.st_size - i;
if (sizerr == 0 && read(f, buf, amt) != amt)
sizerr = 1;
if (write(pfd, buf, amt) < 0)
return(1);
}
(void) close(f);
if (sizerr) {
log("%s: changed size", file);
if(write(pfd, "\1", 1) < 0) /* signal an error occured */
return(1);
} else {
if (write(pfd, "", 1) < 0)
return(1);
if (response())
return(1);
}
return(0);
}
/*
* Check to make sure there have been no errors and that both programs
* are in sync with eachother.
* Return non-zero if the connection was lost.
*/
response()
{
char resp;
if (read(pfd, &resp, 1) != 1)
return(1);
if (resp) {
log("fatal error in rlpr");
#ifndef BSD41C
(void) unlink(LO);
#endif
exit(1);
}
return(0);
}
/*
* Banner printing stuff
*/
banner(name1, name2)
char *name1, *name2;
{
time_t tvec;
extern char *ctime();
time(&tvec);
if (!SF && !tof)
(void) write(ofd, FF, strlen(FF));
if (SB) { /* short banner only */
if (class[0]) {
(void) write(ofd, class, strlen(class));
(void) write(ofd, ":", 1);
}
(void) write(ofd, name1, strlen(name1));
(void) write(ofd, " Job: ", 7);
(void) write(ofd, name2, strlen(name2));
(void) write(ofd, " Date: ", 8);
(void) write(ofd, ctime(&tvec), 24);
(void) write(ofd, "\n", 1);
} else { /* normal banner */
(void) write(ofd, "\n\n\n", 3);
scan_out(ofd, name1, '\0');
(void) write(ofd, "\n\n", 2);
scan_out(ofd, name2, '\0');
if (class[0]) {
(void) write(ofd,"\n\n\n",3);
scan_out(ofd, class, '\0');
}
(void) write(ofd, "\n\n\n\n\t\t\t\t\tJob: ", 15);
(void) write(ofd, name2, strlen(name2));
(void) write(ofd, "\n\t\t\t\t\tDate: ", 12);
(void) write(ofd, ctime(&tvec), 24);
(void) write(ofd, "\n", 1);
}
if (!SF)
(void) write(ofd, FF, strlen(FF));
tof = 1;
}
char *
scnline(key, p, c)
register char key, *p;
char c;
{
register scnwidth;
for (scnwidth = WIDTH; --scnwidth;) {
key <<= 1;
*p++ = key & 0200 ? c : BACKGND;
}
return (p);
}
#define TRC(q) (((q)-' ')&0177)
scan_out(scfd, scsp, dlm)
int scfd;
char *scsp, dlm;
{
register char *strp;
register nchrs, j;
char outbuf[LINELEN+1], *sp, c, cc;
int d, scnhgt;
extern char scnkey[][HEIGHT]; /* in lpdchar.c */
for (scnhgt = 0; scnhgt++ < HEIGHT+DROP;) {
strp = &outbuf[0];
sp = scsp;
for (nchrs = 0;;) {
d = dropit(c = TRC(cc = *sp++));
if ((!d && scnhgt>HEIGHT ) || (scnhgt<=DROP && d))
for (j=WIDTH; --j;)
*strp++ = BACKGND;
else
strp = scnline(scnkey[c][scnhgt-1-d], strp, cc);
if (*sp==dlm || *sp=='\0' || nchrs++>=LINELEN/(WIDTH+1)-1)
break;
*strp++ = BACKGND;
*strp++ = BACKGND;
}
while (*--strp== BACKGND && strp >= outbuf)
;
strp++;
*strp++ = '\n';
(void) write(scfd, outbuf, strp-outbuf);
}
}
dropit(c)
char c;
{
switch(c) {
case TRC('_'):
case TRC(';'):
case TRC(','):
case TRC('g'):
case TRC('j'):
case TRC('p'):
case TRC('q'):
case TRC('y'):
return (DROP);
default:
return (0);
}
}
/*
* sendmail ---
* tell people about job completion
*/
sendmail(bombed)
int bombed;
{
static int p[2];
register int i;
int stat;
register char *cp;
char buf[100];
pipe(p);
if ((stat = dofork(DORETURN)) == 0) {
(void) close(0);
dup(p[0]);
for (i = 3; i <= NOFILE; i++)
(void) close(i);
if ((cp = rindex(MAIL, '/')) != NULL)
cp++;
else
cp = MAIL;
sprintf(buf, "%s.%s", hostname, line+1);
execl(MAIL, cp, buf, 0);
exit(0);
} else if (stat > 0) {
(void) close(1);
dup(p[1]);
printf("To: %s\n", line+1);
printf("Subject: printer job\n\n");
printf("Your printer job ");
if (*jobname)
printf("(%s) ", jobname);
if (bombed)
printf("bombed\n");
else
printf("is done\n");
fflush(stdout);
(void) close(1);
}
(void) close(p[0]);
(void) close(p[1]);
open(LF, 1);
wait(&stat);
}
/*
* dofork - fork with retries on failure
*/
dofork(action)
int action;
{
register int i, pid;
for (i = 0; i < 20; i++) {
if ((pid = fork()) < 0)
sleep((unsigned)(i*i));
else
return (pid);
}
log("can't fork");
switch(action) {
case DORETURN:
return (-1);
default:
log("bad action (%d) to dofork", action);
/*FALL THRU*/
#ifndef BSD41C
case DOUNLOCK:
(void) unlink(LO);
/*FALL THRU*/
#endif
case DOABORT:
exit(1);
}
/*NOTREACHED*/
}
cleanup()
{
signal(SIGTERM, SIG_IGN);
if (prchild > 0)
kill(child, SIGKILL); /* get rid of pr's */
if (child > 0)
kill(child, SIGKILL); /* get rid of filters */
if (ofilter > 0)
kill(ofilter, SIGKILL); /* get rid of output filter */
while (wait(0) > 0)
;
exit(0); /* lprm removes the lock file */
}
/*VARARGS1*/
log(message, a1, a2, a3)
char *message;
{
short console = isatty(fileno(stderr));
fprintf(stderr, console ? "\r\n%s: " : "%s: ", name);
fprintf(stderr, message, a1, a2, a3);
if (console)
putc('\r', stderr);
putc('\n', stderr);
fflush(stderr);
}
/*VARARGS1*/
status(message, a1, a2, a3)
char *message;
{
register int fd;
char buf[BUFSIZ];
if ((fd = creat(ST, FILMOD)) < 0) {
log("cannot create %s", ST);
#ifndef BSD41C
unlink(LO);
#endif
exit(1);
}
sprintf(buf, message, a1, a2, a3);
strcat(buf, "\n");
(void) write(fd, buf, strlen(buf));
(void) close(fd);
}
init()
{
char b[BUFSIZ];
static char buf[BUFSIZ/2];
static char *bp = buf;
int status;
if ((status = pgetent(b, printer)) < 0) {
printf("%s: can't open printer description file\n", name);
exit(3);
} else if (status == 0) {
printf("%s: unknown printer\n", printer);
exit(4);
}
if ((DN = pgetstr("dn", &bp)) == NULL)
DN = DEFDAEMON;
if ((LP = pgetstr("lp", &bp)) == NULL)
LP = DEFDEVLP;
if ((LO = pgetstr("lo", &bp)) == NULL)
LO = DEFLOCK;
if ((ST = pgetstr("st", &bp)) == NULL)
ST = DEFSTAT;
if ((LF = pgetstr("lf", &bp)) == NULL)
LF = DEFLOGF;
if ((SD = pgetstr("sd", &bp)) == NULL)
SD = DEFSPOOL;
if ((FF = pgetstr("ff", &bp)) == NULL)
FF = DEFFF;
if ((RL = pgetstr("rl", &bp)) == NULL)
RL = DEFRLPR;
if ((DU = pgetnum("du")) < 0)
DU = DEFUID;
if ((PW = pgetnum("pw")) < 0)
PW = DEFWIDTH;
sprintf(&width[2], "%d", PW);
if ((PL = pgetnum("pl")) < 0)
PL = DEFLENGTH;
sprintf(&length[2], "%d", PL);
RM = pgetstr("rm", &bp);
RP = pgetstr("rp", &bp);
AF = pgetstr("af", &bp);
OF = pgetstr("of", &bp);
IF = pgetstr("if", &bp);
TF = pgetstr("tf", &bp);
VF = pgetstr("vf", &bp);
CF = pgetstr("cf", &bp);
PF = pgetstr("pf", &bp);
TR = pgetstr("tr", &bp);
SF = pgetflag("sf");
SH = pgetflag("sh");
SB = pgetflag("sb");
BR = pgetnum("br");
if ((FC = pgetnum("fc")) < 0)
FC = 0;
if ((FS = pgetnum("fs")) < 0)
FS = 0;
}
struct bauds {
int baud;
int speed;
} bauds[] = {
50, B50,
75, B75,
110, B110,
134, B134,
150, B150,
200, B200,
300, B300,
600, B600,
1200, B1200,
1800, B1800,
2400, B2400,
4800, B4800,
9600, B9600,
19200, EXTA,
38400, EXTB,
0, 0
};
/*
* setup tty lines.
*/
setty()
{
struct sgttyb ttybuf;
register struct bauds *bp;
if (ioctl(pfd, TIOCGETP, (char *)&ttybuf) < 0) {
log("cannot get tty parameters");
#ifndef BSD41C
(void) unlink(LO);
#endif
exit(1);
}
if (BR > 0) {
for (bp = bauds; bp->baud; bp++)
if (BR == bp->baud)
break;
if (!bp->baud) {
log("illegal baud rate %d", BR);
#ifndef BSD41C
(void) unlink(LO);
#endif
exit(1);
}
ttybuf.sg_ispeed = ttybuf.sg_ospeed = bp->speed;
}
if (FC)
ttybuf.sg_flags &= ~FC;
if (FS)
ttybuf.sg_flags |= FS;
if (ioctl(pfd, TIOCSETN, (char *)&ttybuf) < 0) {
log("cannot set tty parameters");
#ifndef BSD41C
(void) unlink(LO);
#endif
exit(1);
}
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.