3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char copyright[] =
32 "@(#) Copyright (c) 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)lam.c 8.1 (Berkeley) 6/6/93";
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
45 * lam - laminate files
46 * Author: John Kunze, UCB
49 #include <sys/capsicum.h>
51 #include <capsicum_helpers.h>
61 #define BIGBUFSIZ 5 * BUFSIZ
63 static struct openfile { /* open file structure */
64 FILE *fp; /* file pointer */
65 short eof; /* eof flag */
66 short pad; /* pad flag for missing columns */
67 char eol; /* end of line character */
68 const char *sepstring; /* string to print before each line */
69 const char *format; /* printf(3) style string spec. */
72 static int morefiles; /* set by getargs(), changed by gatherline() */
73 static int nofinalnl; /* normally append \n to each output line */
74 static char line[BIGBUFSIZ];
77 static char *gatherline(struct openfile *);
78 static void getargs(char *[]);
79 static char *pad(struct openfile *);
80 static void usage(void);
83 main(int argc, char *argv[])
89 if (caph_limit_stdio() == -1)
90 err(1, "unable to limit stdio");
96 * Cache NLS data, for strerror, for err(3), before entering capability
99 caph_cache_catpages();
100 if (cap_enter() < 0 && errno != ENOSYS)
101 err(1, "unable to enter capability mode");
105 for (ip = input; ip->fp != NULL; ip++)
106 linep = gatherline(ip);
110 fputs(ip->sepstring, stdout);
119 struct openfile *ip = input;
121 static char fmtbuf[BUFSIZ];
124 cap_rights_t rights_ro;
126 cap_rights_init(&rights_ro, CAP_READ, CAP_FSTAT);
127 P = S = F = T = 0; /* capitalized options */
128 while ((p = *++av) != NULL) {
129 if (*p != '-' || !p[1]) {
130 if (++morefiles >= MAXOFILES)
131 errx(1, "too many input files");
134 else if ((ip->fp = fopen(p, "r")) == NULL) {
137 if (cap_rights_limit(fileno(ip->fp), &rights_ro) < 0
139 err(1, "unable to limit rights on: %s", p);
142 ip->sepstring = (S ? (ip-1)->sepstring : "");
144 ip->format = ((P || F) ? (ip-1)->format : "%s");
146 ip->eol = (T ? (ip-1)->eol : '\n');
151 switch (tolower((unsigned char)*c)) {
153 if (*++p || (p = *++av))
157 S = (*c == 'S' ? 1 : 0);
160 if (*++p || (p = *++av))
164 T = (*c == 'T' ? 1 : 0);
169 P = (*c == 'P' ? 1 : 0);
172 F = (*c == 'F' ? 1 : 0);
173 if (*++p || (p = *++av)) {
174 fmtp += strlen(fmtp) + 1;
175 if (fmtp >= fmtbuf + sizeof(fmtbuf))
176 errx(1, "no more format space");
177 /* restrict format string to only valid width formatters */
178 if (strspn(p, "-.0123456789") != strlen(p))
179 errx(1, "invalid format string `%s'", p);
180 if (snprintf(fmtp, fmtbuf + sizeof(fmtbuf) - fmtp, "%%%ss", p)
181 >= fmtbuf + sizeof(fmtbuf) - fmtp)
182 errx(1, "no more format space");
198 pad(struct openfile *ip)
202 strlcpy(lp, ip->sepstring, line + sizeof(line) - lp);
205 snprintf(lp, line + sizeof(line) - lp, ip->format, "");
212 gatherline(struct openfile *ip)
218 char *end = s + sizeof(s) - 1;
222 for (p = s; (c = fgetc(ip->fp)) != EOF && p < end; p++)
223 if ((*p = c) == ip->eol)
233 strlcpy(lp, ip->sepstring, line + sizeof(line) - lp);
235 snprintf(lp, line + sizeof(line) - lp, ip->format, s);
243 fprintf(stderr, "%s\n%s\n",
244 "usage: lam [ -f min.max ] [ -s sepstring ] [ -t c ] file ...",
245 " lam [ -p min.max ] [ -s sepstring ] [ -t c ] file ...");