source: trunk/minix/commands/pax/gen_subs.c@ 15

Last change on this file since 15 was 9, checked in by Mattia Monga, 14 years ago

Minix 3.1.2a
File size: 9.6 KB
Line 
1/*-
2 * Copyright (c) 1992 Keith Muller.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Keith Muller of the University of California, San Diego.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93";
37#endif
38#endif /* not lint */
39
40#include <sys/types.h>
41#include <sys/time.h>
42#include <sys/stat.h>
43#include <stdint.h>
44#include <stdio.h>
45#include <utmp.h>
46#include <unistd.h>
47#include <stdlib.h>
48#include <string.h>
49#include <time.h>
50#include "pax.h"
51#include "extern.h"
52
53/*
54 * a collection of general purpose subroutines used by pax
55 */
56
57/*
58 * constants used by ls_list() when printing out archive members
59 */
60#define MODELEN 20
61#define DATELEN 64
62#define SIXMONTHS ((365 / 2) * 86400)
63#define CURFRMTM "%b %e %H:%M"
64#define OLDFRMTM "%b %e %Y"
65#define CURFRMTD "%e %b %H:%M"
66#define OLDFRMTD "%e %b %Y"
67#ifndef UT_NAMESIZE
68#define UT_NAMESIZE 8
69#endif
70#define UT_GRPSIZE 6
71
72static int d_first = -1;
73
74/*
75 * ls_list()
76 * list the members of an archive in ls format
77 */
78
79void
80ls_list(ARCHD *arcn, time_t now, FILE *fp)
81{
82 struct stat *sbp;
83 char f_mode[MODELEN];
84 char f_date[DATELEN];
85 const char *timefrmt;
86
87 /*
88 * if not verbose, just print the file name
89 */
90 if (!vflag) {
91 (void)fprintf(fp, "%s\n", arcn->name);
92 (void)fflush(fp);
93 return;
94 }
95
96 if (d_first < 0)
97 d_first = 0;
98 /*
99 * user wants long mode
100 */
101 sbp = &(arcn->sb);
102#if 0
103 strmode(sbp->st_mode, f_mode);
104#else
105 strcpy(f_mode, "");
106#endif
107
108 /*
109 * time format based on age compared to the time pax was started.
110 */
111 if ((sbp->st_mtime + SIXMONTHS) <= now)
112 timefrmt = d_first ? OLDFRMTD : OLDFRMTM;
113 else
114 timefrmt = d_first ? CURFRMTD : CURFRMTM;
115
116 /*
117 * print file mode, link count, uid, gid and time
118 */
119#if 0
120 if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0)
121#endif
122 f_date[0] = '\0';
123 (void)fprintf(fp, "%s%2u %-*s %-*s ", f_mode, sbp->st_nlink,
124 UT_NAMESIZE, name_uid(sbp->st_uid, 1), UT_GRPSIZE,
125 name_gid(sbp->st_gid, 1));
126
127 /*
128 * print device id's for devices, or sizes for other nodes
129 */
130 if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK))
131# ifdef NET2_STAT
132 (void)fprintf(fp, "%4u,%4u ", major(sbp->st_rdev),
133 minor(sbp->st_rdev));
134# else
135 (void)fprintf(fp, "%4lu,%4lu ", (unsigned long)major(sbp->st_rdev),
136 (unsigned long)minor(sbp->st_rdev));
137# endif
138 else {
139# ifdef NET2_STAT
140 (void)fprintf(fp, "%9lu ", sbp->st_size);
141# else
142 (void)fprintf(fp, "%9ju ", (uintmax_t)sbp->st_size);
143# endif
144 }
145
146 /*
147 * print name and link info for hard and soft links
148 */
149 (void)fprintf(fp, "%s %s", f_date, arcn->name);
150 if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG))
151 (void)fprintf(fp, " == %s\n", arcn->ln_name);
152 else if (arcn->type == PAX_SLK)
153 (void)fprintf(fp, " => %s\n", arcn->ln_name);
154 else
155 (void)putc('\n', fp);
156 (void)fflush(fp);
157 return;
158}
159
160/*
161 * tty_ls()
162 * print a short summary of file to tty.
163 */
164
165void
166ls_tty(ARCHD *arcn)
167{
168 char f_date[DATELEN];
169 char f_mode[MODELEN];
170 const char *timefrmt;
171
172 if (d_first < 0)
173 d_first = 0;
174
175 if ((arcn->sb.st_mtime + SIXMONTHS) <= time(NULL))
176 timefrmt = d_first ? OLDFRMTD : OLDFRMTM;
177 else
178 timefrmt = d_first ? CURFRMTD : CURFRMTM;
179
180 /*
181 * convert time to string, and print
182 */
183#if 0
184 if (strftime(f_date, DATELEN, timefrmt,
185 localtime(&(arcn->sb.st_mtime))) == 0)
186#endif
187 f_date[0] = '\0';
188#if 0
189 strmode(arcn->sb.st_mode, f_mode);
190#else
191 strcpy(f_mode, "");
192#endif
193 tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name);
194 return;
195}
196
197/*
198 * l_strncpy()
199 * copy src to dest up to len chars (stopping at first '\0').
200 * when src is shorter than len, pads to len with '\0'.
201 * Return:
202 * number of chars copied. (Note this is a real performance win over
203 * doing a strncpy(), a strlen(), and then a possible memset())
204 */
205
206int
207l_strncpy(char *dest, const char *src, int len)
208{
209 char *stop;
210 char *start;
211
212 stop = dest + len;
213 start = dest;
214 while ((dest < stop) && (*src != '\0'))
215 *dest++ = *src++;
216 len = dest - start;
217 while (dest < stop)
218 *dest++ = '\0';
219 return(len);
220}
221
222/*
223 * asc_ul()
224 * convert hex/octal character string into a u_long. We do not have to
225 * check for overflow! (the headers in all supported formats are not large
226 * enough to create an overflow).
227 * NOTE: strings passed to us are NOT TERMINATED.
228 * Return:
229 * unsigned long value
230 */
231
232u_long
233asc_ul(char *str, int len, int base)
234{
235 char *stop;
236 u_long tval = 0;
237
238 stop = str + len;
239
240 /*
241 * skip over leading blanks and zeros
242 */
243 while ((str < stop) && ((*str == ' ') || (*str == '0')))
244 ++str;
245
246 /*
247 * for each valid digit, shift running value (tval) over to next digit
248 * and add next digit
249 */
250 if (base == HEX) {
251 while (str < stop) {
252 if ((*str >= '0') && (*str <= '9'))
253 tval = (tval << 4) + (*str++ - '0');
254 else if ((*str >= 'A') && (*str <= 'F'))
255 tval = (tval << 4) + 10 + (*str++ - 'A');
256 else if ((*str >= 'a') && (*str <= 'f'))
257 tval = (tval << 4) + 10 + (*str++ - 'a');
258 else
259 break;
260 }
261 } else {
262 while ((str < stop) && (*str >= '0') && (*str <= '7'))
263 tval = (tval << 3) + (*str++ - '0');
264 }
265 return(tval);
266}
267
268/*
269 * ul_asc()
270 * convert an unsigned long into an hex/oct ascii string. pads with LEADING
271 * ascii 0's to fill string completely
272 * NOTE: the string created is NOT TERMINATED.
273 */
274
275int
276ul_asc(u_long val, char *str, int len, int base)
277{
278 char *pt;
279 u_long digit;
280
281 /*
282 * WARNING str is not '\0' terminated by this routine
283 */
284 pt = str + len - 1;
285
286 /*
287 * do a tailwise conversion (start at right most end of string to place
288 * least significant digit). Keep shifting until conversion value goes
289 * to zero (all digits were converted)
290 */
291 if (base == HEX) {
292 while (pt >= str) {
293 if ((digit = (val & 0xf)) < 10)
294 *pt-- = '0' + (char)digit;
295 else
296 *pt-- = 'a' + (char)(digit - 10);
297 if ((val = (val >> 4)) == (u_long)0)
298 break;
299 }
300 } else {
301 while (pt >= str) {
302 *pt-- = '0' + (char)(val & 0x7);
303 if ((val = (val >> 3)) == (u_long)0)
304 break;
305 }
306 }
307
308 /*
309 * pad with leading ascii ZEROS. We return -1 if we ran out of space.
310 */
311 while (pt >= str)
312 *pt-- = '0';
313 if (val != (u_long)0)
314 return(-1);
315 return(0);
316}
317
318#ifndef NET2_STAT
319/*
320 * asc_uqd()
321 * convert hex/octal character string into a u_quad_t. We do not have to
322 * check for overflow! (the headers in all supported formats are not large
323 * enough to create an overflow).
324 * NOTE: strings passed to us are NOT TERMINATED.
325 * Return:
326 * u_quad_t value
327 */
328
329u_quad_t
330asc_uqd(char *str, int len, int base)
331{
332 char *stop;
333 u_quad_t tval = 0;
334
335 stop = str + len;
336
337 /*
338 * skip over leading blanks and zeros
339 */
340 while ((str < stop) && ((*str == ' ') || (*str == '0')))
341 ++str;
342
343 /*
344 * for each valid digit, shift running value (tval) over to next digit
345 * and add next digit
346 */
347 if (base == HEX) {
348 while (str < stop) {
349 if ((*str >= '0') && (*str <= '9'))
350 tval = (tval << 4) + (*str++ - '0');
351 else if ((*str >= 'A') && (*str <= 'F'))
352 tval = (tval << 4) + 10 + (*str++ - 'A');
353 else if ((*str >= 'a') && (*str <= 'f'))
354 tval = (tval << 4) + 10 + (*str++ - 'a');
355 else
356 break;
357 }
358 } else {
359 while ((str < stop) && (*str >= '0') && (*str <= '7'))
360 tval = (tval << 3) + (*str++ - '0');
361 }
362 return(tval);
363}
364
365/*
366 * uqd_asc()
367 * convert an u_quad_t into a hex/oct ascii string. pads with LEADING
368 * ascii 0's to fill string completely
369 * NOTE: the string created is NOT TERMINATED.
370 */
371
372int
373uqd_asc(u_quad_t val, char *str, int len, int base)
374{
375 char *pt;
376 u_quad_t digit;
377
378 /*
379 * WARNING str is not '\0' terminated by this routine
380 */
381 pt = str + len - 1;
382
383 /*
384 * do a tailwise conversion (start at right most end of string to place
385 * least significant digit). Keep shifting until conversion value goes
386 * to zero (all digits were converted)
387 */
388 if (base == HEX) {
389 while (pt >= str) {
390 if ((digit = (val & 0xf)) < 10)
391 *pt-- = '0' + (char)digit;
392 else
393 *pt-- = 'a' + (char)(digit - 10);
394 if ((val = (val >> 4)) == (u_quad_t)0)
395 break;
396 }
397 } else {
398 while (pt >= str) {
399 *pt-- = '0' + (char)(val & 0x7);
400 if ((val = (val >> 3)) == (u_quad_t)0)
401 break;
402 }
403 }
404
405 /*
406 * pad with leading ascii ZEROS. We return -1 if we ran out of space.
407 */
408 while (pt >= str)
409 *pt-- = '0';
410 if (val != (u_quad_t)0)
411 return(-1);
412 return(0);
413}
414#endif
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