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-rw-r--r--usr.sbin/lpr/lpc/lpc.c419
1 files changed, 419 insertions, 0 deletions
diff --git a/usr.sbin/lpr/lpc/lpc.c b/usr.sbin/lpr/lpc/lpc.c
new file mode 100644
index 0000000..cc58bd9
--- /dev/null
+++ b/usr.sbin/lpr/lpc/lpc.c
@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1983, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)lpc.c 8.3 (Berkeley) 4/28/95";
+#endif /* not lint */
+#endif
+
+#include "lp.cdefs.h" /* A cross-platform version of <sys/cdefs.h> */
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+
+#include <ctype.h>
+#include <dirent.h>
+#include <err.h>
+#include <grp.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <syslog.h>
+#include <string.h>
+#include <unistd.h>
+#include <histedit.h>
+
+#include "lp.h"
+#include "lpc.h"
+#include "extern.h"
+
+#ifndef LPR_OPER
+#define LPR_OPER "operator" /* group name of lpr operators */
+#endif
+
+/*
+ * lpc -- line printer control program
+ */
+
+#define MAX_CMDLINE 200
+#define MAX_MARGV 20
+static int fromatty;
+
+static char cmdline[MAX_CMDLINE];
+static int margc;
+static char *margv[MAX_MARGV];
+uid_t uid, euid;
+
+int main(int _argc, char *_argv[]);
+static void cmdscanner(void);
+static struct cmd *getcmd(const char *_name);
+static void intr(int _signo);
+static void makeargv(void);
+static int ingroup(const char *_grname);
+
+int
+main(int argc, char *argv[])
+{
+ register struct cmd *c;
+
+ euid = geteuid();
+ uid = getuid();
+ PRIV_END
+ progname = argv[0];
+ openlog("lpd", 0, LOG_LPR);
+
+ if (--argc > 0) {
+ c = getcmd(*++argv);
+ if (c == (struct cmd *)-1) {
+ printf("?Ambiguous command\n");
+ exit(1);
+ }
+ if (c == 0) {
+ printf("?Invalid command\n");
+ exit(1);
+ }
+ if ((c->c_opts & LPC_PRIVCMD) && getuid() &&
+ ingroup(LPR_OPER) == 0) {
+ printf("?Privileged command\n");
+ exit(1);
+ }
+ if (c->c_generic != 0)
+ generic(c->c_generic, c->c_opts, c->c_handler,
+ argc, argv);
+ else
+ (*c->c_handler)(argc, argv);
+ exit(0);
+ }
+ fromatty = isatty(fileno(stdin));
+ if (!fromatty)
+ signal(SIGINT, intr);
+ for (;;) {
+ cmdscanner();
+ }
+}
+
+static void
+intr(int signo __unused)
+{
+ /* (the '__unused' is just to avoid a compile-time warning) */
+ exit(0);
+}
+
+static const char *
+lpc_prompt(void)
+{
+ return ("lpc> ");
+}
+
+/*
+ * Command parser.
+ */
+static void
+cmdscanner(void)
+{
+ register struct cmd *c;
+ static EditLine *el;
+ static History *hist;
+ HistEvent he;
+ size_t len;
+ int num;
+ const char *bp;
+
+ num = 0;
+ bp = NULL;
+ el = NULL;
+ hist = NULL;
+ for (;;) {
+ if (fromatty) {
+ if (!el) {
+ el = el_init("lpc", stdin, stdout, stderr);
+ hist = history_init();
+ history(hist, &he, H_SETSIZE, 100);
+ el_set(el, EL_HIST, history, hist);
+ el_set(el, EL_EDITOR, "emacs");
+ el_set(el, EL_PROMPT, lpc_prompt);
+ el_set(el, EL_SIGNAL, 1);
+ el_source(el, NULL);
+ /*
+ * EditLine init may call 'cgetset()' to set a
+ * capability-db meant for termcap (eg: to set
+ * terminal type 'xterm'). Reset that now, or
+ * that same db-information will be used for
+ * printcap (giving us an "xterm" printer, with
+ * all kinds of invalid capabilities...).
+ */
+ cgetset(NULL);
+ }
+ if ((bp = el_gets(el, &num)) == NULL || num == 0)
+ quit(0, NULL);
+
+ len = (num > MAX_CMDLINE - 1) ? MAX_CMDLINE - 1 : num;
+ memcpy(cmdline, bp, len);
+ cmdline[len] = 0;
+ history(hist, &he, H_ENTER, bp);
+
+ } else {
+ if (fgets(cmdline, MAX_CMDLINE, stdin) == NULL)
+ quit(0, NULL);
+ if (cmdline[0] == 0 || cmdline[0] == '\n')
+ break;
+ }
+
+ makeargv();
+ if (margc == 0)
+ continue;
+ if (el != NULL && el_parse(el, margc, margv) != -1)
+ continue;
+
+ c = getcmd(margv[0]);
+ if (c == (struct cmd *)-1) {
+ printf("?Ambiguous command\n");
+ continue;
+ }
+ if (c == 0) {
+ printf("?Invalid command\n");
+ continue;
+ }
+ if ((c->c_opts & LPC_PRIVCMD) && getuid() &&
+ ingroup(LPR_OPER) == 0) {
+ printf("?Privileged command\n");
+ continue;
+ }
+
+ /*
+ * Two different commands might have the same generic rtn
+ * (eg: "clean" and "tclean"), and just use different
+ * handler routines for distinct command-setup. The handler
+ * routine might also be set on a generic routine for
+ * initial parameter processing.
+ */
+ if (c->c_generic != 0)
+ generic(c->c_generic, c->c_opts, c->c_handler,
+ margc, margv);
+ else
+ (*c->c_handler)(margc, margv);
+ }
+}
+
+static struct cmd *
+getcmd(const char *name)
+{
+ register const char *p, *q;
+ register struct cmd *c, *found;
+ register int nmatches, longest;
+
+ longest = 0;
+ nmatches = 0;
+ found = 0;
+ for (c = cmdtab; (p = c->c_name); c++) {
+ for (q = name; *q == *p++; q++)
+ if (*q == 0) /* exact match? */
+ return(c);
+ if (!*q) { /* the name was a prefix */
+ if (q - name > longest) {
+ longest = q - name;
+ nmatches = 1;
+ found = c;
+ } else if (q - name == longest)
+ nmatches++;
+ }
+ }
+ if (nmatches > 1)
+ return((struct cmd *)-1);
+ return(found);
+}
+
+/*
+ * Slice a string up into argc/argv.
+ */
+static void
+makeargv(void)
+{
+ register char *cp;
+ register char **argp = margv;
+ register int n = 0;
+
+ margc = 0;
+ for (cp = cmdline; *cp && (size_t)(cp - cmdline) < sizeof(cmdline) &&
+ n < MAX_MARGV - 1; n++) {
+ while (isspace(*cp))
+ cp++;
+ if (*cp == '\0')
+ break;
+ *argp++ = cp;
+ margc += 1;
+ while (*cp != '\0' && !isspace(*cp))
+ cp++;
+ if (*cp == '\0')
+ break;
+ *cp++ = '\0';
+ }
+ *argp++ = 0;
+}
+
+#define HELPINDENT (sizeof ("directory"))
+
+/*
+ * Help command.
+ */
+void
+help(int argc, char *argv[])
+{
+ register struct cmd *c;
+
+ if (argc == 1) {
+ register int i, j, w;
+ int columns, width = 0, lines;
+
+ printf("Commands may be abbreviated. Commands are:\n\n");
+ for (c = cmdtab; c->c_name; c++) {
+ int len = strlen(c->c_name);
+
+ if (len > width)
+ width = len;
+ }
+ width = (width + 8) &~ 7;
+ columns = 80 / width;
+ if (columns == 0)
+ columns = 1;
+ lines = (NCMDS + columns - 1) / columns;
+ for (i = 0; i < lines; i++) {
+ for (j = 0; j < columns; j++) {
+ c = cmdtab + j * lines + i;
+ if (c->c_name)
+ printf("%s", c->c_name);
+ if (c + lines >= &cmdtab[NCMDS]) {
+ printf("\n");
+ break;
+ }
+ w = strlen(c->c_name);
+ while (w < width) {
+ w = (w + 8) &~ 7;
+ putchar('\t');
+ }
+ }
+ }
+ return;
+ }
+ while (--argc > 0) {
+ register char *arg;
+ arg = *++argv;
+ c = getcmd(arg);
+ if (c == (struct cmd *)-1)
+ printf("?Ambiguous help command %s\n", arg);
+ else if (c == (struct cmd *)0)
+ printf("?Invalid help command %s\n", arg);
+ else
+ printf("%-*s\t%s\n", (int) HELPINDENT,
+ c->c_name, c->c_help);
+ }
+}
+
+/*
+ * return non-zero if the user is a member of the given group
+ */
+static int
+ingroup(const char *grname)
+{
+ static struct group *gptr=NULL;
+ static int ngroups = 0;
+ static long ngroups_max;
+ static gid_t *groups;
+ register gid_t gid;
+ register int i;
+
+ if (gptr == NULL) {
+ if ((gptr = getgrnam(grname)) == NULL) {
+ warnx("warning: unknown group '%s'", grname);
+ return(0);
+ }
+ ngroups_max = sysconf(_SC_NGROUPS_MAX);
+ if ((groups = malloc(sizeof(gid_t) * ngroups_max)) == NULL)
+ err(1, "malloc");
+ ngroups = getgroups(ngroups_max, groups);
+ if (ngroups < 0)
+ err(1, "getgroups");
+ }
+ gid = gptr->gr_gid;
+ for (i = 0; i < ngroups; i++)
+ if (gid == groups[i])
+ return(1);
+ return(0);
+}
+
+/*
+ * 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);
+ }
+ }
+
+ return (pp);
+}
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