GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: bin/pax/gen_subs.c Lines: 42 120 35.0 %
Date: 2016-12-06 Branches: 32 116 27.6 %

Line Branch Exec Source
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/*	$OpenBSD: gen_subs.c,v 1.28 2015/03/17 03:23:17 guenther Exp $	*/
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/*	$NetBSD: gen_subs.c,v 1.5 1995/03/21 09:07:26 cgd Exp $	*/
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/*-
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 * Copyright (c) 1992 Keith Muller.
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 * Copyright (c) 1992, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Keith Muller of the University of California, San Diego.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <utmp.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <vis.h>
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#include "pax.h"
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#include "extern.h"
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49
/*
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 * a collection of general purpose subroutines used by pax
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 */
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53
/*
54
 * constants used by ls_list() when printing out archive members
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 */
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#define MODELEN 20
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#define DATELEN 64
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#define SECSPERDAY	(24 * 60 * 60)
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#define SIXMONTHS	(SECSPERDAY * 365 / 2)
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#define CURFRMT		"%b %e %H:%M"
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#define OLDFRMT		"%b %e  %Y"
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#define NAME_WIDTH	8
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#define	TIMEFMT(t, now) \
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	(((t) + SIXMONTHS <= (now) || (t) > (now)) ? OLDFRMT : CURFRMT)
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66
/*
67
 * ls_list()
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 *	list the members of an archive in ls format
69
 */
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71
void
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ls_list(ARCHD *arcn, time_t now, FILE *fp)
73
100
{
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	struct stat *sbp;
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	char f_mode[MODELEN];
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	char f_date[DATELEN];
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	int term;
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79
100
	term = zeroflag ? '\0' : '\n';	/* path termination character */
80
81
	/*
82
	 * if not verbose, just print the file name
83
	 */
84
100
	if (!vflag) {
85
100
		if (zeroflag)
86
			(void)fputs(arcn->name, fp);
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		else
88
100
			safe_print(arcn->name, fp);
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100
		(void)putc(term, fp);
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100
		(void)fflush(fp);
91
100
		return;
92
	}
93
94
	/*
95
	 * user wants long mode
96
	 */
97
	sbp = &(arcn->sb);
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	strmode(sbp->st_mode, f_mode);
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100
	/*
101
	 * print file mode, link count, uid, gid and time
102
	 */
103
	if (strftime(f_date, sizeof(f_date), TIMEFMT(sbp->st_mtime, now),
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	    localtime(&(sbp->st_mtime))) == 0)
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		f_date[0] = '\0';
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	(void)fprintf(fp, "%s%2u %-*.*s %-*.*s ", f_mode, sbp->st_nlink,
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		NAME_WIDTH, UT_NAMESIZE, name_uid(sbp->st_uid, 1),
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		NAME_WIDTH, UT_NAMESIZE, name_gid(sbp->st_gid, 1));
109
110
	/*
111
	 * print device id's for devices, or sizes for other nodes
112
	 */
113
	if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK))
114
		(void)fprintf(fp, "%4lu, %4lu ",
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		    (unsigned long)MAJOR(sbp->st_rdev),
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		    (unsigned long)MINOR(sbp->st_rdev));
117
	else {
118
		(void)fprintf(fp, "%9llu ", sbp->st_size);
119
	}
120
121
	/*
122
	 * print name and link info for hard and soft links
123
	 */
124
	(void)fputs(f_date, fp);
125
	(void)putc(' ', fp);
126
	safe_print(arcn->name, fp);
127
	if (PAX_IS_HARDLINK(arcn->type)) {
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		fputs(" == ", fp);
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		safe_print(arcn->ln_name, fp);
130
	} else if (arcn->type == PAX_SLK) {
131
		fputs(" -> ", fp);
132
		safe_print(arcn->ln_name, fp);
133
	}
134
	(void)putc(term, fp);
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	(void)fflush(fp);
136
}
137
138
/*
139
 * tty_ls()
140
 *	print a short summary of file to tty.
141
 */
142
143
void
144
ls_tty(ARCHD *arcn)
145
{
146
	char f_date[DATELEN];
147
	char f_mode[MODELEN];
148
	time_t now = time(NULL);
149
150
	/*
151
	 * convert time to string, and print
152
	 */
153
	if (strftime(f_date, DATELEN, TIMEFMT(arcn->sb.st_mtime, now),
154
	    localtime(&(arcn->sb.st_mtime))) == 0)
155
		f_date[0] = '\0';
156
	strmode(arcn->sb.st_mode, f_mode);
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	tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name);
158
}
159
160
void
161
safe_print(const char *str, FILE *fp)
162
100
{
163
	char visbuf[5];
164
	const char *cp;
165
166
	/*
167
	 * if printing to a tty, use vis(3) to print special characters.
168
	 */
169

100
	if (isatty(fileno(fp))) {
170
		for (cp = str; *cp; cp++) {
171
			(void)vis(visbuf, cp[0], VIS_CSTYLE, cp[1]);
172
			(void)fputs(visbuf, fp);
173
		}
174
	} else {
175
100
		(void)fputs(str, fp);
176
	}
177
100
}
178
179
/*
180
 * asc_ul()
181
 *	convert hex/octal character string into a u_long. We do not have to
182
 *	check for overflow! (the headers in all supported formats are not large
183
 *	enough to create an overflow).
184
 *	NOTE: strings passed to us are NOT TERMINATED.
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 * Return:
186
 *	unsigned long value
187
 */
188
189
u_long
190
asc_ul(char *str, int len, int base)
191
466
{
192
	char *stop;
193
466
	u_long tval = 0;
194
195
466
	stop = str + len;
196
197
	/*
198
	 * skip over leading blanks and zeros
199
	 */
200

2262
	while ((str < stop) && ((*str == ' ') || (*str == '0')))
201
1330
		++str;
202
203
	/*
204
	 * for each valid digit, shift running value (tval) over to next digit
205
	 * and add next digit
206
	 */
207
466
	if (base == HEX) {
208
		while (str < stop) {
209
			if ((*str >= '0') && (*str <= '9'))
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				tval = (tval << 4) + (*str++ - '0');
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			else if ((*str >= 'A') && (*str <= 'F'))
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				tval = (tval << 4) + 10 + (*str++ - 'A');
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			else if ((*str >= 'a') && (*str <= 'f'))
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				tval = (tval << 4) + 10 + (*str++ - 'a');
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			else
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				break;
217
		}
218
	} else {
219

2264
		while ((str < stop) && (*str >= '0') && (*str <= '7'))
220
1798
			tval = (tval << 3) + (*str++ - '0');
221
	}
222
466
	return(tval);
223
}
224
225
/*
226
 * ul_asc()
227
 *	convert an unsigned long into an hex/oct ascii string. pads with LEADING
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 *	ascii 0's to fill string completely
229
 *	NOTE: the string created is NOT TERMINATED.
230
 */
231
232
int
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ul_asc(u_long val, char *str, int len, int base)
234
{
235
	char *pt;
236
	u_long digit;
237
238
	/*
239
	 * WARNING str is not '\0' terminated by this routine
240
	 */
241
	pt = str + len - 1;
242
243
	/*
244
	 * do a tailwise conversion (start at right most end of string to place
245
	 * least significant digit). Keep shifting until conversion value goes
246
	 * to zero (all digits were converted)
247
	 */
248
	if (base == HEX) {
249
		while (pt >= str) {
250
			if ((digit = (val & 0xf)) < 10)
251
				*pt-- = '0' + (char)digit;
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			else
253
				*pt-- = 'a' + (char)(digit - 10);
254
			if ((val = (val >> 4)) == (u_long)0)
255
				break;
256
		}
257
	} else {
258
		while (pt >= str) {
259
			*pt-- = '0' + (char)(val & 0x7);
260
			if ((val = (val >> 3)) == (u_long)0)
261
				break;
262
		}
263
	}
264
265
	/*
266
	 * pad with leading ascii ZEROS. We return -1 if we ran out of space.
267
	 */
268
	while (pt >= str)
269
		*pt-- = '0';
270
	if (val != (u_long)0)
271
		return(-1);
272
	return(0);
273
}
274
275
/*
276
 * asc_uqd()
277
 *	convert hex/octal character string into a u_quad_t. We do not have to
278
 *	check for overflow! (the headers in all supported formats are not large
279
 *	enough to create an overflow).
280
 *	NOTE: strings passed to us are NOT TERMINATED.
281
 * Return:
282
 *	u_quad_t value
283
 */
284
285
u_quad_t
286
asc_uqd(char *str, int len, int base)
287
240
{
288
	char *stop;
289
240
	u_quad_t tval = 0;
290
291
240
	stop = str + len;
292
293
	/*
294
	 * skip over leading blanks and zeros
295
	 */
296

1788
	while ((str < stop) && ((*str == ' ') || (*str == '0')))
297
1308
		++str;
298
299
	/*
300
	 * for each valid digit, shift running value (tval) over to next digit
301
	 * and add next digit
302
	 */
303
240
	if (base == HEX) {
304
		while (str < stop) {
305
			if ((*str >= '0') && (*str <= '9'))
306
				tval = (tval << 4) + (*str++ - '0');
307
			else if ((*str >= 'A') && (*str <= 'F'))
308
				tval = (tval << 4) + 10 + (*str++ - 'A');
309
			else if ((*str >= 'a') && (*str <= 'f'))
310
				tval = (tval << 4) + 10 + (*str++ - 'a');
311
			else
312
				break;
313
		}
314
	} else {
315

1586
		while ((str < stop) && (*str >= '0') && (*str <= '7'))
316
1346
			tval = (tval << 3) + (*str++ - '0');
317
	}
318
240
	return(tval);
319
}
320
321
/*
322
 * uqd_asc()
323
 *	convert an u_quad_t into a hex/oct ascii string. pads with LEADING
324
 *	ascii 0's to fill string completely
325
 *	NOTE: the string created is NOT TERMINATED.
326
 */
327
328
int
329
uqd_asc(u_quad_t val, char *str, int len, int base)
330
{
331
	char *pt;
332
	u_quad_t digit;
333
334
	/*
335
	 * WARNING str is not '\0' terminated by this routine
336
	 */
337
	pt = str + len - 1;
338
339
	/*
340
	 * do a tailwise conversion (start at right most end of string to place
341
	 * least significant digit). Keep shifting until conversion value goes
342
	 * to zero (all digits were converted)
343
	 */
344
	if (base == HEX) {
345
		while (pt >= str) {
346
			if ((digit = (val & 0xf)) < 10)
347
				*pt-- = '0' + (char)digit;
348
			else
349
				*pt-- = 'a' + (char)(digit - 10);
350
			if ((val = (val >> 4)) == (u_quad_t)0)
351
				break;
352
		}
353
	} else {
354
		while (pt >= str) {
355
			*pt-- = '0' + (char)(val & 0x7);
356
			if ((val = (val >> 3)) == (u_quad_t)0)
357
				break;
358
		}
359
	}
360
361
	/*
362
	 * pad with leading ascii ZEROS. We return -1 if we ran out of space.
363
	 */
364
	while (pt >= str)
365
		*pt-- = '0';
366
	if (val != (u_quad_t)0)
367
		return(-1);
368
	return(0);
369
}
370
371
/*
372
 * Copy at max min(bufz, fieldsz) chars from field to buf, stopping
373
 * at the first NUL char. NUL terminate buf if there is room left.
374
 */
375
size_t
376
fieldcpy(char *buf, size_t bufsz, const char *field, size_t fieldsz)
377
322
{
378
322
	char *p = buf;
379
322
	const char *q = field;
380
322
	size_t i = 0;
381
382
322
	if (fieldsz > bufsz)
383
22
		fieldsz = bufsz;
384

12126
	while (i < fieldsz && *q != '\0') {
385
11804
		*p++ = *q++;
386
11804
		i++;
387
	}
388
322
	if (i < bufsz)
389
316
		*p = '\0';
390
322
	return(i);
391
}