/*
* Routine to get the information for a single printer (which will be
* called by the routines which implement individual commands).
* Note: This is for commands operating on a *single* printer.
*/
struct printer *
setup_myprinter(char *pwanted, struct printer *pp, int sump_opts)
{
int cdres, cmdstatus;
init_printer(pp);
cmdstatus = getprintcap(pwanted, pp);
switch (cmdstatus) {
default:
fatal(pp, "%s", pcaperr(cmdstatus));
/* NOTREACHED */
case PCAPERR_NOTFOUND:
printf("unknown printer %s\n", pwanted);
return (NULL);
case PCAPERR_TCOPEN:
printf("warning: %s: unresolved tc= reference(s)", pwanted);
break;
case PCAPERR_SUCCESS:
break;
}
if ((sump_opts & SUMP_NOHEADER) == 0)
printf("%s:\n", pp->printer);
if (sump_opts & SUMP_CHDIR_SD) {
PRIV_START
cdres = chdir(pp->spool_dir);
PRIV_END
if (cdres < 0) {
printf("\tcannot chdir to %s\n", pp->spool_dir);
free_printer(pp);
return (NULL);
}
}
/*
* Perform lookup for printer name or abbreviation --
*/
static int
chkprinter(const char *ptrname)
{
int stat;
struct printer myprinter, *pp = &myprinter;
init_printer(&myprinter);
stat = getprintcap(ptrname, pp);
switch(stat) {
case PCAPERR_OSERR:
printf("pac: getprintcap: %s\n", pcaperr(stat));
exit(3);
case PCAPERR_NOTFOUND:
return 0;
case PCAPERR_TCLOOP:
fatal(pp, "%s", pcaperr(stat));
}
if ((acctfile = pp->acct_file) == NULL)
errx(3, "accounting not enabled for printer %s", ptrname);
if (!pflag && pp->price100)
price = pp->price100/10000.0;
sumfile = (char *) calloc(sizeof(char), strlen(acctfile)+5);
if (sumfile == NULL)
errx(1, "calloc failed");
strcpy(sumfile, acctfile);
strcat(sumfile, "_sum");
return(1);
}
/*
* Perform lookup for printer name or abbreviation --
*/
static void
chkprinter(const char *s)
{
char *cp;
getprintcap(s);
RG = cgetstr(bp, "rg", &cp) == -1 ? NULL : cp;
if (cgetnum(bp, "mx", &MX) < 0)
MX = DEFMX;
if (cgetnum(bp,"mc", &MC) < 0)
MC = DEFMAXCOPIES;
if (cgetnum(bp, "du", &DU) < 0)
DU = DEFUID;
SC = (cgetcap(bp, "sc", ':') != NULL);
}
/*
* Perform lookup for printer name or abbreviation --
*/
static void
chkprinter(const char *ptrname, struct printer *pp)
{
int status;
init_printer(pp);
status = getprintcap(ptrname, pp);
switch(status) {
case PCAPERR_OSERR:
case PCAPERR_TCLOOP:
errx(1, "%s: %s", ptrname, pcaperr(status));
case PCAPERR_NOTFOUND:
errx(1, "%s: unknown printer", ptrname);
case PCAPERR_TCOPEN:
warnx("%s: unresolved tc= reference(s)", ptrname);
}
}
void
rmjob(const char *printer)
{
register int i, nitems;
int assassinated = 0;
struct dirent **files;
char *cp;
struct printer myprinter, *pp = &myprinter;
init_printer(pp);
if ((i = getprintcap(printer, pp)) < 0)
fatal(pp, "getprintcap: %s", pcaperr(i));
if ((cp = checkremote(pp))) {
printf("Warning: %s\n", cp);
free(cp);
}
/*
* If the format was `lprm -' and the user isn't the super-user,
* then fake things to look like he said `lprm user'.
*/
if (users < 0) {
if (getuid() == 0)
all = 1; /* all files in local queue */
else {
user[0] = person;
users = 1;
}
}
if (!strcmp(person, "-all")) {
if (from_host == local_host)
fatal(pp, "The login name \"-all\" is reserved");
all = 1; /* all those from 'from_host' */
person = root;
}
seteuid(euid);
if (chdir(pp->spool_dir) < 0)
fatal(pp, "cannot chdir to spool directory");
if ((nitems = scandir(".", &files, iscf, NULL)) < 0)
fatal(pp, "cannot access spool directory");
seteuid(uid);
if (nitems) {
/*
* Check for an active printer daemon (in which case we
* kill it if it is reading our file) then remove stuff
* (after which we have to restart the daemon).
*/
if (lockchk(pp, pp->lock_file) && chk(current)) {
seteuid(euid);
assassinated = kill(cur_daemon, SIGINT) == 0;
seteuid(uid);
if (!assassinated)
fatal(pp, "cannot kill printer daemon");
}
/*
* process the files
*/
for (i = 0; i < nitems; i++)
process(pp, files[i]->d_name);
}
rmremote(pp);
/*
* Restart the printer daemon if it was killed
*/
if (assassinated && !startdaemon(pp))
fatal(pp, "cannot restart printer daemon\n");
exit(0);
}
int
main(int argc, char **argv)
{
int ch, aflag, lflag;
const char *printer;
struct printer myprinter, *pp = &myprinter;
printer = NULL;
euid = geteuid();
uid = getuid();
seteuid(uid);
progname = *argv;
if (gethostname(local_host, sizeof(local_host)))
err(1, "gethostname");
openlog("lpd", 0, LOG_LPR);
aflag = lflag = 0;
while ((ch = getopt(argc, argv, "alP:")) != -1)
switch((char)ch) {
case 'a':
++aflag;
break;
case 'l': /* long output */
++lflag;
break;
case 'P': /* printer name */
printer = optarg;
break;
case '?':
default:
usage();
}
if (!aflag && printer == NULL && (printer = getenv("PRINTER")) == NULL)
printer = DEFLP;
for (argc -= optind, argv += optind; argc; --argc, ++argv)
if (isdigit(argv[0][0])) {
if (requests >= MAXREQUESTS)
fatal(0, "too many requests");
requ[requests++] = atoi(*argv);
}
else {
if (users >= MAXUSERS)
fatal(0, "too many users");
user[users++] = *argv;
}
if (aflag) {
int more, status;
more = firstprinter(pp, &status);
if (status)
goto looperr;
while (more) {
if (ckqueue(pp) > 0) {
printf("%s:\n", pp->printer);
displayq(pp, lflag);
printf("\n");
}
do {
more = nextprinter(pp, &status);
looperr:
switch (status) {
case PCAPERR_TCOPEN:
printf("warning: %s: unresolved "
"tc= reference(s) ",
pp->printer);
case PCAPERR_SUCCESS:
break;
default:
fatal(pp, "%s", pcaperr(status));
}
} while (more && status);
}
} else {
int status;
init_printer(pp);
status = getprintcap(printer, pp);
if (status < 0)
fatal(pp, "%s", pcaperr(status));
displayq(pp, lflag);
}
exit(0);
}
void
generic(void (*specificrtn)(struct printer *_pp), int cmdopts,
void (*initrtn)(int _argc, char *_argv[]), int argc, char *argv[])
{
int cmdstatus, more, targc;
struct printer myprinter, *pp;
char **margv, **targv;
if (argc == 1) {
/*
* Usage needs a special case for 'down': The user must
* either include `-msg', or only the first parameter
* that they give will be processed as a printer name.
*/
printf("usage: %s {all | printer ...}", argv[0]);
if (strcmp(argv[0], "down") == 0) {
printf(" -msg [<text> ...]\n");
printf(" or: down {all | printer} [<text> ...]");
} else if (cmdopts & LPC_MSGOPT)
printf(" [-msg <text> ...]");
printf("\n");
return;
}
/* The first argument is the command name. */
generic_cmdname = *argv++;
argc--;
/*
* The initialization routine for a command might set a generic
* "wrapup" routine, which should be called after processing all
* the printers in the command. This might print summary info.
*
* Note that the initialization routine may also parse (and
* nullify) some of the parameters given on the command, leaving
* only the parameters which have to do with printer names.
*/
pp = &myprinter;
generic_wrapup = NULL;
generic_qselect = QSEL_UNKNOWN;
cmdstatus = 0;
/* this just needs to be a distinct value of type 'char *' */
if (generic_nullarg == NULL)
generic_nullarg = strdup("");
/*
* Some commands accept a -msg argument, which indicates that
* all remaining arguments should be combined into a string.
*/
generic_msg = NULL;
if (cmdopts & LPC_MSGOPT) {
targc = argc;
targv = argv;
for (; targc > 0; targc--, targv++) {
if (strcmp(*targv, "-msg") == 0) {
argc -= targc;
generic_msg = args2line(targc - 1, targv + 1);
break;
}
}
}
/* call initialization routine, if there is one for this cmd */
if (initrtn != NULL) {
generic_initerr = 0;
(*initrtn)(argc, argv);
if (generic_initerr)
return;
/*
* The initrtn may have null'ed out some of the parameters.
* Compact the parameter list to remove those nulls, and
* correct the arg-count.
*/
targc = argc;
targv = argv;
margv = argv;
argc = 0;
for (; targc > 0; targc--, targv++) {
if (*targv != generic_nullarg) {
if (targv != margv)
*margv = *targv;
margv++;
argc++;
}
}
}
if (argc == 1 && strcmp(*argv, "all") == 0) {
generic_qselect = QSEL_ALL;
more = firstprinter(pp, &cmdstatus);
if (cmdstatus)
goto looperr;
while (more) {
(*specificrtn)(pp);
do {
more = nextprinter(pp, &cmdstatus);
looperr:
switch (cmdstatus) {
case PCAPERR_TCOPEN:
printf("warning: %s: unresolved "
"tc= reference(s) ",
pp->printer);
case PCAPERR_SUCCESS:
break;
default:
fatal(pp, "%s", pcaperr(cmdstatus));
}
} while (more && cmdstatus);
}
goto wrapup;
}
generic_qselect = QSEL_BYNAME; /* specifically-named ptrs */
for (; argc > 0; argc--, argv++) {
init_printer(pp);
cmdstatus = getprintcap(*argv, pp);
switch (cmdstatus) {
default:
fatal(pp, "%s", pcaperr(cmdstatus));
case PCAPERR_NOTFOUND:
printf("unknown printer %s\n", *argv);
continue;
case PCAPERR_TCOPEN:
printf("warning: %s: unresolved tc= reference(s)\n",
*argv);
break;
case PCAPERR_SUCCESS:
break;
}
(*specificrtn)(pp);
}
wrapup:
if (generic_wrapup) {
(*generic_wrapup)(cmdstatus);
}
free_printer(pp);
if (generic_msg)
free(generic_msg);
}
static void
doit(void)
{
char *cp, *printer;
int n;
int status;
struct printer myprinter, *pp = &myprinter;
init_printer(&myprinter);
for (;;) {
cp = cbuf;
do {
if (cp >= &cbuf[sizeof(cbuf) - 1])
fatal(0, "Command line too long");
if ((n = read(STDOUT_FILENO, cp, 1)) != 1) {
if (n < 0)
fatal(0, "Lost connection");
return;
}
} while (*cp++ != '\n');
*--cp = '\0';
cp = cbuf;
if (lflag) {
if (*cp >= '\1' && *cp <= '\5')
syslog(LOG_INFO, "%s requests %s %s",
from_host, cmdnames[(u_char)*cp], cp+1);
else
syslog(LOG_INFO, "bad request (%d) from %s",
*cp, from_host);
}
switch (*cp++) {
case CMD_CHECK_QUE: /* check the queue, print any jobs there */
startprinting(cp);
break;
case CMD_TAKE_THIS: /* receive files to be queued */
if (!from_remote) {
syslog(LOG_INFO, "illegal request (%d)", *cp);
exit(1);
}
recvjob(cp);
break;
case CMD_SHOWQ_SHORT: /* display the queue (short form) */
case CMD_SHOWQ_LONG: /* display the queue (long form) */
/* XXX - this all needs to be redone. */
printer = cp;
while (*cp) {
if (*cp != ' ') {
cp++;
continue;
}
*cp++ = '\0';
while (isspace(*cp))
cp++;
if (*cp == '\0')
break;
if (isdigit(*cp)) {
if (requests >= MAXREQUESTS)
fatal(0, "Too many requests");
requ[requests++] = atoi(cp);
} else {
if (users >= MAXUSERS)
fatal(0, "Too many users");
user[users++] = cp;
}
}
status = getprintcap(printer, pp);
if (status < 0)
fatal(pp, "%s", pcaperr(status));
displayq(pp, cbuf[0] == CMD_SHOWQ_LONG);
exit(0);
case CMD_RMJOB: /* remove a job from the queue */
if (!from_remote) {
syslog(LOG_INFO, "illegal request (%d)", *cp);
exit(1);
}
printer = cp;
while (*cp && *cp != ' ')
cp++;
if (!*cp)
break;
*cp++ = '\0';
person = cp;
while (*cp) {
if (*cp != ' ') {
cp++;
continue;
}
*cp++ = '\0';
while (isspace(*cp))
cp++;
if (*cp == '\0')
break;
if (isdigit(*cp)) {
if (requests >= MAXREQUESTS)
fatal(0, "Too many requests");
requ[requests++] = atoi(cp);
} else {
if (users >= MAXUSERS)
fatal(0, "Too many users");
user[users++] = cp;
}
}
rmjob(printer);
break;
}
fatal(0, "Illegal service request");
}
}
/*
* Display the current state of the queue. Format = 1 if long format.
*/
void
displayq(int format)
{
struct queue *q;
int i, nitems, fd, ret;
char *cp, *ecp;
struct queue **queue;
struct stat statb;
FILE *fp;
lflag = format;
totsize = 0;
rank = -1;
getprintcap(printer);
/*
* Print out local queue
* Find all the control files in the spooling directory
*/
seteuid(euid);
if (chdir(SD) < 0)
fatal("cannot chdir to spooling directory");
seteuid(uid);
if ((nitems = getq(&queue)) < 0)
fatal("cannot examine spooling area\n");
seteuid(euid);
ret = stat(LO, &statb);
seteuid(uid);
if (ret >= 0) {
if (statb.st_mode & S_IXUSR) {
if (remote)
printf("%s: ", host);
printf("Warning: %s is down: ", printer);
seteuid(euid);
fd = open(ST, O_RDONLY);
seteuid(uid);
if (fd >= 0) {
(void)flock(fd, LOCK_SH);
while ((i = read(fd, line, sizeof(line))) > 0)
(void)fwrite(line, 1, (size_t)i, stdout);
(void)close(fd); /* unlocks as well */
} else
putchar('\n');
}
if (statb.st_mode & S_IXGRP) {
if (remote)
printf("%s: ", host);
printf("Warning: %s queue is turned off\n", printer);
}
}
if (nitems) {
seteuid(euid);
fp = fopen(LO, "r");
seteuid(uid);
if (fp == NULL)
nodaemon();
else {
/* get daemon pid */
cp = current;
ecp = cp + sizeof(current) - 1;
while ((i = getc(fp)) != EOF && i != '\n') {
if (cp < ecp)
*cp++ = i;
}
*cp = '\0';
i = atoi(current);
if (i <= 0) {
ret = -1;
} else {
seteuid(euid);
ret = kill(i, 0);
seteuid(uid);
}
if (ret < 0) {
nodaemon();
} else {
/* read current file name */
cp = current;
ecp = cp + sizeof(current) - 1;
while ((i = getc(fp)) != EOF && i != '\n') {
if (cp < ecp)
*cp++ = i;
}
*cp = '\0';
/*
* Print the status file.
*/
if (remote)
printf("%s: ", host);
seteuid(euid);
fd = open(ST, O_RDONLY);
seteuid(uid);
if (fd >= 0) {
(void)flock(fd, LOCK_SH);
while ((i = read(fd, line, sizeof(line))) > 0)
(void)fwrite(line, 1, (size_t)i, stdout);
(void)close(fd); /* unlocks as well */
} else
putchar('\n');
}
(void)fclose(fp);
}
/*
* Now, examine the control files and print out the jobs to
* be done for each user.
*/
if (!lflag)
header();
for (i = 0; i < nitems; i++) {
q = queue[i];
inform(q->q_name);
}
}
freeq(queue, nitems);
if (!remote) {
if (nitems == 0)
puts("no entries");
return;
}
/*
* Print foreign queue
* Note that a file in transit may show up in either queue.
*/
if (nitems)
putchar('\n');
(void)snprintf(line, sizeof(line), "%c%s", format + '\3', RP);
cp = line;
ecp = line + sizeof(line);
for (i = 0;
i < requests && (size_t)(cp - line + 11) < sizeof(line) - 2;
i++) {
cp += strlen(cp);
(void)snprintf(cp, ecp - cp, " %d", requ[i]);
}
for (i = 0;
i < users && cp - line + 1 + strlen(user[i]) < sizeof(line) - 2;
i++) {
cp += strlen(cp);
if ((size_t)(cp - line) > sizeof(line) - 2)
break;
*cp++ = ' ';
/* truncation may happen */
(void)strlcpy(cp, user[i], ecp - cp);
}
(void)strlcat(line, "\n", sizeof(line));
fd = getport(RM);
if (fd < 0) {
if (from != host)
printf("%s: ", host);
(void)printf("connection to %s is down\n", RM);
}
else {
struct sigaction osa, nsa;
i = strlen(line);
if (write(fd, line, (size_t)i) != i)
fatal("Lost connection");
nsa.sa_handler = alarmer;
sigemptyset(&nsa.sa_mask);
sigaddset(&nsa.sa_mask, SIGALRM);
nsa.sa_flags = 0;
(void)sigaction(SIGALRM, &nsa, &osa);
alarm(wait_time);
while ((i = read(fd, line, sizeof(line))) > 0) {
(void)fwrite(line, 1, (size_t)i, stdout);
alarm(wait_time);
}
alarm(0);
(void)sigaction(SIGALRM, &osa, NULL);
(void)close(fd);
}
}
