ref: 39c3fd117ab4988c041800490b23c2aedb1858d3
dir: /sys/src/cmd/lp/lpdsend.c/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#define REDIALTIMEOUT 15
#ifdef PLAN9
#include <Plan9libnet.h>
#endif
enum {
TIMEOUT = 30*60,
SBSIZE = 8192,
};
char tmpfilename[L_tmpnam+1];
unsigned char sendbuf[SBSIZE];
int alarmstate = 0;
int debugflag = 0;
int killflag = 0;
int statflag = 0;
void
cleanup(void)
{
unlink(tmpfilename);
}
void
debug(char *str)
{
if (debugflag)
fprintf(stderr, "%s", str);
}
void
alarmhandler(int sig)
{
fprintf(stderr, "timeout occurred, check printer.\n");
exit(2);
}
/* send a message after each WARNPC percent of data sent */
#define WARNPC 5
int
copyfile(int in, int out, long tosend)
{
int n;
int sent = 0;
int percent = 0;
if (debugflag)
fprintf(stderr, "lpdsend: copyfile(%d,%d,%ld)\n",
in, out, tosend);
while ((n=read(in, sendbuf, SBSIZE)) > 0) {
if (debugflag)
fprintf(stderr, "lpdsend: copyfile read %d bytes from %d\n",
n, in);
alarm(TIMEOUT);
alarmstate = 1;
if (write(out, sendbuf, n) != n) {
alarm(0);
fprintf(stderr, "write to fd %d failed\n", out);
return(0);
}
alarm(0);
if (debugflag)
fprintf(stderr, "lpdsend: copyfile wrote %d bytes to %d\n",
n, out);
sent += n;
if (tosend && sent*100/tosend >= percent+WARNPC) {
percent += WARNPC;
fprintf(stderr, ": %5.2f%% sent\n", sent*100.0/tosend);
}
}
if (debugflag)
fprintf(stderr, "lpdsend: copyfile read %d bytes from %d\n",
n, in);
return(!n);
}
char strbuf[120];
char hostname[MAXHOSTNAMELEN], *username, *printername, *killarg;
char *inputname;
char filetype = 'o'; /* 'o' is for PostScript */
int seqno = 0;
char *seqfilename;
void
killjob(int printerfd)
{
int strlength;
if (printername==0) {
fprintf(stderr, "no printer name\n");
exit(1);
}
if (username==0) {
fprintf(stderr, "no user name given\n");
exit(1);
}
if (killarg==0) {
fprintf(stderr, "no job to kill\n");
exit(1);
}
sprintf(strbuf, "%c%s %s %s\n", '\5', printername, username, killarg);
strlength = strlen(strbuf);
if (write(printerfd, strbuf, strlength) != strlength) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
copyfile(printerfd, 2, 0L);
}
void
checkqueue(int printerfd)
{
int n, strlength;
unsigned char sendbuf[1];
sprintf(strbuf, "%c%s\n", '\4', printername);
strlength = strlen(strbuf);
if (write(printerfd, strbuf, strlength) != strlength) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
copyfile(printerfd, 2, 0L);
/*
while ((n=read(printerfd, sendbuf, 1)) > 0) {
write(2, sendbuf, n);
}
*/
}
void
getack(int printerfd, int as)
{
char resp;
int rv;
alarm(TIMEOUT);
alarmstate = as;
if ((rv = read(printerfd, &resp, 1)) != 1 || resp != '\0') {
fprintf(stderr, "getack failed: read returned %d, "
"read value (if any) %d, alarmstate=%d\n",
rv, resp, alarmstate);
exit(1);
}
alarm(0);
}
/* send control file */
void
sendctrl(int printerfd)
{
char cntrlstrbuf[256];
int strlength, cntrlen;
sprintf(cntrlstrbuf, "H%s\nP%s\n%cdfA%3.3d%s\n", hostname, username, filetype, seqno, hostname);
cntrlen = strlen(cntrlstrbuf);
sprintf(strbuf, "%c%d cfA%3.3d%s\n", '\2', cntrlen, seqno, hostname);
strlength = strlen(strbuf);
if (write(printerfd, strbuf, strlength) != strlength) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
getack(printerfd, 3);
if (write(printerfd, cntrlstrbuf, cntrlen) != cntrlen) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
if (write(printerfd, "\0", 1) != 1) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
getack(printerfd, 4);
}
/* send data file */
void
senddata(int inputfd, int printerfd, long size)
{
int strlength;
sprintf(strbuf, "%c%d dfA%3.3d%s\n", '\3', size, seqno, hostname);
strlength = strlen(strbuf);
if (write(printerfd, strbuf, strlength) != strlength) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
getack(printerfd, 5);
if (!copyfile(inputfd, printerfd, size)) {
fprintf(stderr, "failed to send file to printer\n");
exit(1);
}
if (write(printerfd, "\0", 1) != 1) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
fprintf(stderr, "%d bytes sent, status: waiting for end of job\n", size);
getack(printerfd, 6);
}
void
sendjob(int inputfd, int printerfd)
{
struct stat statbuf;
int strlength;
if (fstat(inputfd, &statbuf) < 0) {
fprintf(stderr, "fstat(%s) failed\n", inputname);
exit(1);
}
sprintf(strbuf, "%c%s\n", '\2', printername);
strlength = strlen(strbuf);
if (write(printerfd, strbuf, strlength) != strlength) {
fprintf(stderr, "write(printer) error\n");
exit(1);
}
getack(printerfd, 2);
debug("send data\n");
senddata(inputfd, printerfd, statbuf.st_size);
debug("send control info\n");
sendctrl(printerfd);
fprintf(stderr, "%ld bytes sent, status: end of job\n", statbuf.st_size);
}
/*
* make an address, add the defaults
*/
char *
netmkaddr(char *linear, char *defnet, char *defsrv)
{
static char addr[512];
char *cp;
/*
* dump network name
*/
cp = strchr(linear, '!');
if(cp == 0){
if(defnet==0){
if(defsrv)
snprintf(addr, sizeof addr, "net!%s!%s", linear, defsrv);
else
snprintf(addr, sizeof addr, "net!%s", linear);
}
else {
if(defsrv)
snprintf(addr, sizeof addr, "%s!%s!%s", defnet, linear, defsrv);
else
snprintf(addr, sizeof addr, "%s!%s", defnet, linear);
}
return addr;
}
/*
* if there is already a service, use it
*/
cp = strchr(cp+1, '!');
if(cp)
return linear;
/*
* add default service
*/
if(defsrv == 0)
return linear;
sprintf(addr, "%s!%s", linear, defsrv);
return addr;
}
void
main(int argc, char *argv[])
{
int c, usgflg = 0, inputfd, printerfd, sendport;
char *desthostname, *hnend;
char portstr[4];
if (signal(SIGALRM, alarmhandler) == SIG_ERR) {
fprintf(stderr, "failed to set alarm handler\n");
exit(1);
}
while ((c = getopt(argc, argv, "Dd:k:qs:t:H:P:")) != -1)
switch (c) {
case 'D':
debugflag = 1;
debug("debugging on\n");
break;
case 'd':
printername = optarg;
break;
case 'k':
if (statflag) {
fprintf(stderr, "cannot have both -k and -q flags\n");
exit(1);
}
killflag = 1;
killarg = optarg;
break;
case 'q':
if (killflag) {
fprintf(stderr, "cannot have both -q and -k flags\n");
exit(1);
}
statflag = 1;
break;
case 's':
seqno = strtol(optarg, NULL, 10);
if (seqno < 0 || seqno > 999)
seqno = 0;
break;
case 't':
switch (filetype) {
case 'c':
case 'd':
case 'f':
case 'g':
case 'l':
case 'n':
case 'o':
case 'p':
case 'r':
case 't':
case 'v':
case 'z':
filetype = optarg[0];
break;
default:
usgflg++;
break;
}
break;
case 'H':
strncpy(hostname, optarg, MAXHOSTNAMELEN);
break;
case 'P':
username = optarg;
break;
default:
case '?':
fprintf(stderr, "unknown option %c\n", c);
usgflg++;
}
if (argc < 2) usgflg++;
if (optind < argc) {
desthostname = argv[optind++];
} else
usgflg++;
if (usgflg) {
fprintf(stderr, "usage: to send a job - %s -d printer -H hostname -P username [-s seqno] [-t[cdfgklnoprtvz]] desthost [filename]\n", argv[0]);
fprintf(stderr, " to check status - %s -d printer -q desthost\n", argv[0]);
fprintf(stderr, " to kill a job - %s -d printer -P username -k jobname desthost\n", argv[0]);
exit(1);
}
/* make sure the file to send is here and ready
* otherwise the TCP connection times out.
*/
if (!statflag && !killflag) {
if (optind < argc) {
inputname = argv[optind++];
debug("open("); debug(inputname); debug(")\n");
inputfd = open(inputname, O_RDONLY);
if (inputfd < 0) {
fprintf(stderr, "open(%s) failed\n", inputname);
exit(1);
}
} else {
inputname = "stdin";
tmpnam(tmpfilename);
debug("using stdin\n");
if ((inputfd = open(tmpfilename, O_RDWR|O_CREAT, 0600)) < 0) {
fprintf(stderr, "open(%s) failed\n", tmpfilename);
exit(1);
}
atexit(cleanup);
debug("copy input to temp file ");
debug(tmpfilename);
debug("\n");
if (!copyfile(0, inputfd, 0L)) {
fprintf(stderr, "failed to copy file to temporary file\n");
exit(1);
}
if (lseek(inputfd, 0L, 0) < 0) {
fprintf(stderr, "failed to seek back to the beginning of the temporary file\n");
exit(1);
}
}
}
sprintf(strbuf, "%s", netmkaddr(desthostname, "tcp", "printer"));
fprintf(stderr, "connecting to %s\n", strbuf);
for (sendport=721; sendport<=731; sendport++) {
sprintf(portstr, "%3.3d", sendport);
fprintf(stderr, " trying from port %s...", portstr);
debug(" dial("); debug(strbuf); debug(", "); debug(portstr); debug(", 0, 0) ...");
printerfd = dial(strbuf, portstr, 0, 0);
if (printerfd >= 0) {
fprintf(stderr, "connected\n");
break;
}
fprintf(stderr, "failed\n");
sleep(REDIALTIMEOUT);
}
if (printerfd < 0) {
fprintf(stderr, "Cannot open a valid port!\n");
fprintf(stderr, "- All source ports [721-731] may be busy.\n");
fprintf(stderr, "- Is recipient ready and online?\n");
fprintf(stderr, "- If all else fails, cycle the power!\n");
exit(1);
}
/* hostname[8] = '\0'; */
#ifndef PLAN9
if (gethostname(hostname, sizeof(hostname)) < 0) {
perror("gethostname");
exit(1);
}
#endif
/* if ((hnend = strchr(hostname, '.')) != NULL)
*hnend = '\0';
*/
if (statflag) {
checkqueue(printerfd);
} else if (killflag) {
killjob(printerfd);
} else {
sendjob(inputfd, printerfd);
}
exit(0);
}