print.c revision 34650d7da670a6653a5b0546b0656d1772779fd2
1/*
2 * Copyright (c) Ian F. Darwin 1986-1995.
3 * Software written by Ian F. Darwin and others;
4 * maintained 1995-present by Christos Zoulas and others.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice immediately at the beginning of the file, without modification,
11 *    this list of conditions, and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28/*
29 * print.c - debugging printout routines
30 */
31
32#include "file.h"
33
34#ifndef lint
35FILE_RCSID("@(#)$File: print.c,v 1.80 2015/07/16 14:28:57 christos Exp $")
36#endif  /* lint */
37
38#include <string.h>
39#include <stdarg.h>
40#include <stdlib.h>
41#ifdef HAVE_UNISTD_H
42#include <unistd.h>
43#endif
44#include <time.h>
45
46#define SZOF(a)	(sizeof(a) / sizeof(a[0]))
47
48#include "cdf.h"
49
50#ifndef COMPILE_ONLY
51protected void
52file_mdump(struct magic *m)
53{
54	static const char optyp[] = { FILE_OPS };
55	char tbuf[26];
56
57	(void) fprintf(stderr, "%u: %.*s %u", m->lineno,
58	    (m->cont_level & 7) + 1, ">>>>>>>>", m->offset);
59
60	if (m->flag & INDIR) {
61		(void) fprintf(stderr, "(%s,",
62		    /* Note: type is unsigned */
63		    (m->in_type < file_nnames) ? file_names[m->in_type] :
64		    "*bad in_type*");
65		if (m->in_op & FILE_OPINVERSE)
66			(void) fputc('~', stderr);
67		(void) fprintf(stderr, "%c%u),",
68		    ((size_t)(m->in_op & FILE_OPS_MASK) <
69		    SZOF(optyp)) ? optyp[m->in_op & FILE_OPS_MASK] : '?',
70		    m->in_offset);
71	}
72	(void) fprintf(stderr, " %s%s", (m->flag & UNSIGNED) ? "u" : "",
73	    /* Note: type is unsigned */
74	    (m->type < file_nnames) ? file_names[m->type] : "*bad type");
75	if (m->mask_op & FILE_OPINVERSE)
76		(void) fputc('~', stderr);
77
78	if (IS_STRING(m->type)) {
79		if (m->str_flags) {
80			(void) fputc('/', stderr);
81			if (m->str_flags & STRING_COMPACT_WHITESPACE)
82				(void) fputc(CHAR_COMPACT_WHITESPACE, stderr);
83			if (m->str_flags & STRING_COMPACT_OPTIONAL_WHITESPACE)
84				(void) fputc(CHAR_COMPACT_OPTIONAL_WHITESPACE,
85				    stderr);
86			if (m->str_flags & STRING_IGNORE_LOWERCASE)
87				(void) fputc(CHAR_IGNORE_LOWERCASE, stderr);
88			if (m->str_flags & STRING_IGNORE_UPPERCASE)
89				(void) fputc(CHAR_IGNORE_UPPERCASE, stderr);
90			if (m->str_flags & REGEX_OFFSET_START)
91				(void) fputc(CHAR_REGEX_OFFSET_START, stderr);
92			if (m->str_flags & STRING_TEXTTEST)
93				(void) fputc(CHAR_TEXTTEST, stderr);
94			if (m->str_flags & STRING_BINTEST)
95				(void) fputc(CHAR_BINTEST, stderr);
96			if (m->str_flags & PSTRING_1_BE)
97				(void) fputc(CHAR_PSTRING_1_BE, stderr);
98			if (m->str_flags & PSTRING_2_BE)
99				(void) fputc(CHAR_PSTRING_2_BE, stderr);
100			if (m->str_flags & PSTRING_2_LE)
101				(void) fputc(CHAR_PSTRING_2_LE, stderr);
102			if (m->str_flags & PSTRING_4_BE)
103				(void) fputc(CHAR_PSTRING_4_BE, stderr);
104			if (m->str_flags & PSTRING_4_LE)
105				(void) fputc(CHAR_PSTRING_4_LE, stderr);
106			if (m->str_flags & PSTRING_LENGTH_INCLUDES_ITSELF)
107				(void) fputc(
108				    CHAR_PSTRING_LENGTH_INCLUDES_ITSELF,
109				    stderr);
110		}
111		if (m->str_range)
112			(void) fprintf(stderr, "/%u", m->str_range);
113	}
114	else {
115		if ((size_t)(m->mask_op & FILE_OPS_MASK) < SZOF(optyp))
116			(void) fputc(optyp[m->mask_op & FILE_OPS_MASK], stderr);
117		else
118			(void) fputc('?', stderr);
119
120		if (m->num_mask) {
121			(void) fprintf(stderr, "%.8llx",
122			    (unsigned long long)m->num_mask);
123		}
124	}
125	(void) fprintf(stderr, ",%c", m->reln);
126
127	if (m->reln != 'x') {
128		switch (m->type) {
129		case FILE_BYTE:
130		case FILE_SHORT:
131		case FILE_LONG:
132		case FILE_LESHORT:
133		case FILE_LELONG:
134		case FILE_MELONG:
135		case FILE_BESHORT:
136		case FILE_BELONG:
137		case FILE_INDIRECT:
138			(void) fprintf(stderr, "%d", m->value.l);
139			break;
140		case FILE_BEQUAD:
141		case FILE_LEQUAD:
142		case FILE_QUAD:
143			(void) fprintf(stderr, "%" INT64_T_FORMAT "d",
144			    (unsigned long long)m->value.q);
145			break;
146		case FILE_PSTRING:
147		case FILE_STRING:
148		case FILE_REGEX:
149		case FILE_BESTRING16:
150		case FILE_LESTRING16:
151		case FILE_SEARCH:
152			file_showstr(stderr, m->value.s, (size_t)m->vallen);
153			break;
154		case FILE_DATE:
155		case FILE_LEDATE:
156		case FILE_BEDATE:
157		case FILE_MEDATE:
158			(void)fprintf(stderr, "%s,",
159			    file_fmttime(m->value.l, 0, tbuf));
160			break;
161		case FILE_LDATE:
162		case FILE_LELDATE:
163		case FILE_BELDATE:
164		case FILE_MELDATE:
165			(void)fprintf(stderr, "%s,",
166			    file_fmttime(m->value.l, FILE_T_LOCAL, tbuf));
167			break;
168		case FILE_QDATE:
169		case FILE_LEQDATE:
170		case FILE_BEQDATE:
171			(void)fprintf(stderr, "%s,",
172			    file_fmttime(m->value.q, 0, tbuf));
173			break;
174		case FILE_QLDATE:
175		case FILE_LEQLDATE:
176		case FILE_BEQLDATE:
177			(void)fprintf(stderr, "%s,",
178			    file_fmttime(m->value.q, FILE_T_LOCAL, tbuf));
179			break;
180		case FILE_QWDATE:
181		case FILE_LEQWDATE:
182		case FILE_BEQWDATE:
183			(void)fprintf(stderr, "%s,",
184			    file_fmttime(m->value.q, FILE_T_WINDOWS, tbuf));
185			break;
186		case FILE_FLOAT:
187		case FILE_BEFLOAT:
188		case FILE_LEFLOAT:
189			(void) fprintf(stderr, "%G", m->value.f);
190			break;
191		case FILE_DOUBLE:
192		case FILE_BEDOUBLE:
193		case FILE_LEDOUBLE:
194			(void) fprintf(stderr, "%G", m->value.d);
195			break;
196		case FILE_DEFAULT:
197			/* XXX - do anything here? */
198			break;
199		case FILE_USE:
200		case FILE_NAME:
201			(void) fprintf(stderr, "'%s'", m->value.s);
202			break;
203		default:
204			(void) fprintf(stderr, "*bad type %d*", m->type);
205			break;
206		}
207	}
208	(void) fprintf(stderr, ",\"%s\"]\n", m->desc);
209}
210#endif
211
212/*VARARGS*/
213protected void
214file_magwarn(struct magic_set *ms, const char *f, ...)
215{
216	va_list va;
217
218	/* cuz we use stdout for most, stderr here */
219	(void) fflush(stdout);
220
221	if (ms->file)
222		(void) fprintf(stderr, "%s, %lu: ", ms->file,
223		    (unsigned long)ms->line);
224	(void) fprintf(stderr, "Warning: ");
225	va_start(va, f);
226	(void) vfprintf(stderr, f, va);
227	va_end(va);
228	(void) fputc('\n', stderr);
229}
230
231protected const char *
232file_fmttime(uint64_t v, int flags, char *buf)
233{
234	char *pp;
235	time_t t;
236	struct tm *tm, tmz;
237
238	if (flags & FILE_T_WINDOWS) {
239		struct timespec ts;
240		cdf_timestamp_to_timespec(&ts, v);
241		t = ts.tv_sec;
242	} else {
243		// XXX: perhaps detect and print something if overflow
244		// on 32 bit time_t?
245		t = (time_t)v;
246	}
247
248	if (flags & FILE_T_LOCAL) {
249		tm = localtime_r(&t, &tmz);
250	} else {
251		tm = gmtime_r(&t, &tmz);
252	}
253	if (tm == NULL)
254		goto out;
255	pp = asctime_r(tm, buf);
256
257	if (pp == NULL)
258		goto out;
259	pp[strcspn(pp, "\n")] = '\0';
260	return pp;
261out:
262	return strcpy(buf, "*Invalid time*");
263}
264