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-rw-r--r--usr.sbin/lpr/chkprintcap/skimprintcap.c261
1 files changed, 261 insertions, 0 deletions
diff --git a/usr.sbin/lpr/chkprintcap/skimprintcap.c b/usr.sbin/lpr/chkprintcap/skimprintcap.c
new file mode 100644
index 0000000..1a634e1
--- /dev/null
+++ b/usr.sbin/lpr/chkprintcap/skimprintcap.c
@@ -0,0 +1,261 @@
+/*
+ * ------+---------+---------+---------+---------+---------+---------+---------*
+ * Copyright (c) 2001 - Garance Alistair Drosehn <gad@FreeBSD.org>.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * The views and conclusions contained in the software and documentation
+ * are those of the authors and should not be interpreted as representing
+ * official policies, either expressed or implied, of the FreeBSD Project.
+ *
+ * ------+---------+---------+---------+---------+---------+---------+---------*
+ */
+
+#include <sys/cdefs.h>
+
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <grp.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <sys/param.h> /* needed for lp.h but not used here */
+#include <dirent.h> /* ditto */
+#include "lp.h"
+#include "lp.local.h"
+#include "skimprintcap.h"
+
+/*
+ * Save the canonical queue name of the entry that is currently being
+ * scanned, in case a warning message is printed for the current queue.
+ * Only the first 'QENTRY_MAXLEN' characters will be saved, since this
+ * is only for warning messages. The variable includes space for the
+ * string " (entry " and a trailing ")", when the scanner is in the
+ * middle of an entry. When the scanner is not in a specific entry,
+ * the variable will be the a null string.
+ */
+#define QENTRY_MAXLEN 30
+#define QENTRY_PREFIX " (entry "
+static char skim_entryname[sizeof(QENTRY_PREFIX) + QENTRY_MAXLEN + 2];
+
+/*
+ * isgraph is defined to work on an 'int', in the range 0 to 255, plus EOF.
+ * Define a wrapper which can take 'char', either signed or unsigned.
+ */
+#define isgraphch(Anychar) isgraph(((int) Anychar) & 255)
+
+struct skiminfo *
+skim_printcap(const char *pcap_fname, int verbosity)
+{
+ struct skiminfo *skinf;
+ char buff[BUFSIZ];
+ char *ch, *curline, *endfield, *lastchar;
+ FILE *pc_file;
+ int missing_nl;
+ enum {NO_CONTINUE, WILL_CONTINUE, BAD_CONTINUE} is_cont, had_cont;
+ enum {CMNT_LINE, ENTRY_LINE, TAB_LINE, TABERR_LINE} is_type, had_type;
+
+ skinf = malloc(sizeof(struct skiminfo));
+ memset(skinf, 0, sizeof(struct skiminfo));
+
+ pc_file = fopen(pcap_fname, "r");
+ if (pc_file == NULL) {
+ warn("fopen(%s)", pcap_fname);
+ skinf->fatalerr++;
+ return (skinf); /* fatal error */
+ }
+
+ skim_entryname[0] = '0';
+
+ is_cont = NO_CONTINUE;
+ is_type = CMNT_LINE;
+ errno = 0;
+ curline = fgets(buff, sizeof(buff), pc_file);
+ while (curline != NULL) {
+ skinf->lines++;
+
+ /* Check for the expected newline char, and remove it */
+ missing_nl = 0;
+ lastchar = strchr(curline, '\n');
+ if (lastchar != NULL)
+ *lastchar = '\0';
+ else {
+ lastchar = strchr(curline, '\0');
+ missing_nl = 1;
+ }
+ if (curline < lastchar)
+ lastchar--;
+
+ /*
+ * Check for `\' (continuation-character) at end of line.
+ * If there is none, then trim off spaces and check again.
+ * This would be a bad line because it looks like it is
+ * continued, but it will not be treated that way.
+ */
+ had_cont = is_cont;
+ is_cont = NO_CONTINUE;
+ if (*lastchar == '\\') {
+ is_cont = WILL_CONTINUE;
+ lastchar--;
+ } else {
+ while ((curline < lastchar) && !isgraphch(*lastchar))
+ lastchar--;
+ if (*lastchar == '\\')
+ is_cont = BAD_CONTINUE;
+ }
+
+ had_type = is_type;
+ is_type = CMNT_LINE;
+ switch (*curline) {
+ case '\0': /* treat zero-length line as comment */
+ case '#':
+ skinf->comments++;
+ break;
+ case ' ':
+ case '\t':
+ is_type = TAB_LINE;
+ break;
+ default:
+ is_type = ENTRY_LINE;
+ skinf->entries++;
+
+ /* pick up the queue name, to use in warning messages */
+ ch = curline;
+ while ((ch <= lastchar) && (*ch != ':') && (*ch != '|'))
+ ch++;
+ ch--; /* last char of queue name */
+ strcpy(skim_entryname, QENTRY_PREFIX);
+ if ((ch - curline) > QENTRY_MAXLEN) {
+ strncat(skim_entryname, curline, QENTRY_MAXLEN
+ - 1);
+ strcat(skim_entryname, "+");
+ } else {
+ strncat(skim_entryname, curline, (ch - curline
+ + 1));
+ }
+ strlcat(skim_entryname, ")", sizeof(skim_entryname));
+ break;
+ }
+
+ /*
+ * Check to see if the previous line was a bad contination
+ * line. The check is delayed until now so a warning message
+ * is not printed when a "bad continuation" is on a comment
+ * line, and it just "continues" into another comment line.
+ */
+ if (had_cont == BAD_CONTINUE) {
+ if ((had_type != CMNT_LINE) || (is_type != CMNT_LINE) ||
+ (verbosity > 1)) {
+ skinf->warnings++;
+ warnx("Warning: blanks after trailing '\\',"
+ " at line %d%s", skinf->lines - 1,
+ skim_entryname);
+ }
+ }
+
+ /* If we are no longer in an entry, then forget the name */
+ if ((had_cont != WILL_CONTINUE) && (is_type != ENTRY_LINE)) {
+ skim_entryname[0] = '\0';
+ }
+
+ /*
+ * Print out warning for missing newline, done down here
+ * so we are sure to have the right entry-name for it.
+ */
+ if (missing_nl) {
+ skinf->warnings++;
+ warnx("Warning: No newline at end of line %d%s",
+ skinf->lines, skim_entryname);
+ }
+
+ /*
+ * Check for start-of-entry lines which do not include a
+ * ":" character (to indicate the end of the name field).
+ * This can cause standard printcap processing to ignore
+ * ALL of the following lines.
+ * XXXXX - May need to allow for the list-of-names to
+ * continue on to the following line...
+ */
+ if (is_type == ENTRY_LINE) {
+ endfield = strchr(curline, ':');
+ if (endfield == NULL) {
+ skinf->warnings++;
+ warnx("Warning: No ':' to terminate name-field"
+ " at line %d%s", skinf->lines,
+ skim_entryname);
+ }
+ }
+
+ /*
+ * Now check for cases where this line is (or is-not) a
+ * continuation of the previous line, and a person skimming
+ * the file would assume it is not (or is) a continuation.
+ */
+ switch (had_cont) {
+ case NO_CONTINUE:
+ case BAD_CONTINUE:
+ if (is_type == TAB_LINE) {
+ skinf->warnings++;
+ warnx("Warning: values-line after line with"
+ " NO trailing '\\', at line %d%s",
+ skinf->lines, skim_entryname);
+ }
+ break;
+
+ case WILL_CONTINUE:
+ if (is_type == ENTRY_LINE) {
+ skinf->warnings++;
+ warnx("Warning: new entry starts after line"
+ " with trailing '\\', at line %d%s",
+ skinf->lines, skim_entryname);
+ }
+ break;
+ }
+
+ /* get another line from printcap and repeat loop */
+ curline = fgets(buff, sizeof(buff), pc_file);
+ }
+
+ if (errno != 0) {
+ warn("fgets(%s)", pcap_fname);
+ skinf->fatalerr++; /* fatal error */
+ }
+
+ if (skinf->warnings > 0)
+ warnx("%4d warnings from skimming %s", skinf->warnings,
+ pcap_fname);
+
+ if (verbosity)
+ warnx("%4d lines (%d comments), %d entries for %s",
+ skinf->lines, skinf->comments, skinf->entries, pcap_fname);
+
+ fclose(pc_file);
+ return (skinf);
+}
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