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
35 FILE_RCSID("@(#)$File: print.c,v 1.89 2021/06/30 10:08:48 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 #include "cdf.h"
47
48 #ifndef COMPILE_ONLY
49 protected void
file_mdump(struct magic * m)50 file_mdump(struct magic *m)
51 {
52 static const char optyp[] = { FILE_OPS };
53 char tbuf[256];
54
55 (void) fprintf(stderr, "%u: %.*s %u", m->lineno,
56 (m->cont_level & 7) + 1, ">>>>>>>>", m->offset);
57
58 if (m->flag & INDIR) {
59 (void) fprintf(stderr, "(%s,",
60 /* Note: type is unsigned */
61 (m->in_type < file_nnames) ? file_names[m->in_type] :
62 "*bad in_type*");
63 if (m->in_op & FILE_OPINVERSE)
64 (void) fputc('~', stderr);
65 (void) fprintf(stderr, "%c%u),",
66 (CAST(size_t, m->in_op & FILE_OPS_MASK) <
67 __arraycount(optyp)) ?
68 optyp[m->in_op & FILE_OPS_MASK] : '?', m->in_offset);
69 }
70 (void) fprintf(stderr, " %s%s", (m->flag & UNSIGNED) ? "u" : "",
71 /* Note: type is unsigned */
72 (m->type < file_nnames) ? file_names[m->type] : "*bad type");
73 if (m->mask_op & FILE_OPINVERSE)
74 (void) fputc('~', stderr);
75
76 if (IS_STRING(m->type)) {
77 if (m->str_flags) {
78 (void) fputc('/', stderr);
79 if (m->str_flags & STRING_COMPACT_WHITESPACE)
80 (void) fputc(CHAR_COMPACT_WHITESPACE, stderr);
81 if (m->str_flags & STRING_COMPACT_OPTIONAL_WHITESPACE)
82 (void) fputc(CHAR_COMPACT_OPTIONAL_WHITESPACE,
83 stderr);
84 if (m->str_flags & STRING_IGNORE_LOWERCASE)
85 (void) fputc(CHAR_IGNORE_LOWERCASE, stderr);
86 if (m->str_flags & STRING_IGNORE_UPPERCASE)
87 (void) fputc(CHAR_IGNORE_UPPERCASE, stderr);
88 if (m->str_flags & REGEX_OFFSET_START)
89 (void) fputc(CHAR_REGEX_OFFSET_START, stderr);
90 if (m->str_flags & STRING_TEXTTEST)
91 (void) fputc(CHAR_TEXTTEST, stderr);
92 if (m->str_flags & STRING_BINTEST)
93 (void) fputc(CHAR_BINTEST, stderr);
94 if (m->str_flags & PSTRING_1_BE)
95 (void) fputc(CHAR_PSTRING_1_BE, stderr);
96 if (m->str_flags & PSTRING_2_BE)
97 (void) fputc(CHAR_PSTRING_2_BE, stderr);
98 if (m->str_flags & PSTRING_2_LE)
99 (void) fputc(CHAR_PSTRING_2_LE, stderr);
100 if (m->str_flags & PSTRING_4_BE)
101 (void) fputc(CHAR_PSTRING_4_BE, stderr);
102 if (m->str_flags & PSTRING_4_LE)
103 (void) fputc(CHAR_PSTRING_4_LE, stderr);
104 if (m->str_flags & PSTRING_LENGTH_INCLUDES_ITSELF)
105 (void) fputc(
106 CHAR_PSTRING_LENGTH_INCLUDES_ITSELF,
107 stderr);
108 }
109 if (m->str_range)
110 (void) fprintf(stderr, "/%u", m->str_range);
111 }
112 else {
113 if (CAST(size_t, m->mask_op & FILE_OPS_MASK) <
114 __arraycount(optyp))
115 (void) fputc(optyp[m->mask_op & FILE_OPS_MASK], stderr);
116 else
117 (void) fputc('?', stderr);
118
119 if (m->num_mask) {
120 (void) fprintf(stderr, "%.8llx",
121 CAST(unsigned long long, m->num_mask));
122 }
123 }
124 (void) fprintf(stderr, ",%c", m->reln);
125
126 if (m->reln != 'x') {
127 switch (m->type) {
128 case FILE_BYTE:
129 case FILE_SHORT:
130 case FILE_LONG:
131 case FILE_LESHORT:
132 case FILE_LELONG:
133 case FILE_MELONG:
134 case FILE_BESHORT:
135 case FILE_BELONG:
136 case FILE_INDIRECT:
137 (void) fprintf(stderr, "%d", m->value.l);
138 break;
139 case FILE_BEQUAD:
140 case FILE_LEQUAD:
141 case FILE_QUAD:
142 case FILE_OFFSET:
143 (void) fprintf(stderr, "%" INT64_T_FORMAT "d",
144 CAST(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,
153 CAST(size_t, m->vallen));
154 break;
155 case FILE_DATE:
156 case FILE_LEDATE:
157 case FILE_BEDATE:
158 case FILE_MEDATE:
159 (void)fprintf(stderr, "%s,",
160 file_fmttime(tbuf, sizeof(tbuf), m->value.l, 0));
161 break;
162 case FILE_LDATE:
163 case FILE_LELDATE:
164 case FILE_BELDATE:
165 case FILE_MELDATE:
166 (void)fprintf(stderr, "%s,",
167 file_fmttime(tbuf, sizeof(tbuf), m->value.l,
168 FILE_T_LOCAL));
169 break;
170 case FILE_QDATE:
171 case FILE_LEQDATE:
172 case FILE_BEQDATE:
173 (void)fprintf(stderr, "%s,",
174 file_fmttime(tbuf, sizeof(tbuf), m->value.q, 0));
175 break;
176 case FILE_QLDATE:
177 case FILE_LEQLDATE:
178 case FILE_BEQLDATE:
179 (void)fprintf(stderr, "%s,",
180 file_fmttime(tbuf, sizeof(tbuf), m->value.q,
181 FILE_T_LOCAL));
182 break;
183 case FILE_QWDATE:
184 case FILE_LEQWDATE:
185 case FILE_BEQWDATE:
186 (void)fprintf(stderr, "%s,",
187 file_fmttime(tbuf, sizeof(tbuf), m->value.q,
188 FILE_T_WINDOWS));
189 break;
190 case FILE_FLOAT:
191 case FILE_BEFLOAT:
192 case FILE_LEFLOAT:
193 (void) fprintf(stderr, "%G", m->value.f);
194 break;
195 case FILE_DOUBLE:
196 case FILE_BEDOUBLE:
197 case FILE_LEDOUBLE:
198 (void) fprintf(stderr, "%G", m->value.d);
199 break;
200 case FILE_LEVARINT:
201 case FILE_BEVARINT:
202 (void)fprintf(stderr, "%s", file_fmtvarint(
203 m->value.us, m->type, tbuf, sizeof(tbuf)));
204 break;
205 case FILE_DEFAULT:
206 /* XXX - do anything here? */
207 break;
208 case FILE_USE:
209 case FILE_NAME:
210 case FILE_DER:
211 (void) fprintf(stderr, "'%s'", m->value.s);
212 break;
213 case FILE_GUID:
214 (void) file_print_guid(tbuf, sizeof(tbuf),
215 m->value.guid);
216 (void) fprintf(stderr, "%s", tbuf);
217 break;
218
219 default:
220 (void) fprintf(stderr, "*bad type %d*", m->type);
221 break;
222 }
223 }
224 (void) fprintf(stderr, ",\"%s\"]\n", m->desc);
225 }
226 #endif
227
228 /*VARARGS*/
229 protected void
file_magwarn(struct magic_set * ms,const char * f,...)230 file_magwarn(struct magic_set *ms, const char *f, ...)
231 {
232 va_list va;
233
234 /* cuz we use stdout for most, stderr here */
235 (void) fflush(stdout);
236
237 if (ms->file)
238 (void) fprintf(stderr, "%s, %lu: ", ms->file,
239 CAST(unsigned long, ms->line));
240 (void) fprintf(stderr, "Warning: ");
241 va_start(va, f);
242 (void) vfprintf(stderr, f, va);
243 va_end(va);
244 (void) fputc('\n', stderr);
245 }
246
247 protected const char *
file_fmtvarint(const unsigned char * us,int t,char * buf,size_t blen)248 file_fmtvarint(const unsigned char *us, int t, char *buf, size_t blen)
249 {
250 snprintf(buf, blen, "%jd", file_varint2uintmax_t(us, t, NULL));
251 return buf;
252 }
253
254 protected const char *
file_fmttime(char * buf,size_t bsize,uint64_t v,int flags)255 file_fmttime(char *buf, size_t bsize, uint64_t v, int flags)
256 {
257 char *pp;
258 time_t t;
259 struct tm *tm, tmz;
260
261 if (flags & FILE_T_WINDOWS) {
262 struct timespec ts;
263 cdf_timestamp_to_timespec(&ts, CAST(cdf_timestamp_t, v));
264 t = ts.tv_sec;
265 } else {
266 // XXX: perhaps detect and print something if overflow
267 // on 32 bit time_t?
268 t = CAST(time_t, v);
269 }
270
271 if (flags & FILE_T_LOCAL) {
272 tm = localtime_r(&t, &tmz);
273 } else {
274 tm = gmtime_r(&t, &tmz);
275 }
276 if (tm == NULL)
277 goto out;
278 pp = asctime_r(tm, buf);
279
280 if (pp == NULL)
281 goto out;
282 pp[strcspn(pp, "\n")] = '\0';
283 return pp;
284 out:
285 strlcpy(buf, "*Invalid time*", bsize);
286 return buf;
287 }
288