source: trunk/src/sh_filetype.c@ 496

Last change on this file since 496 was 481, checked in by katerina, 9 years ago

Enhancements and fixes for tickets #374, #375, #376, #377, #378, and #379.
File size: 18.0 KB
Line 
1/* SAMHAIN file system integrity testing */
2/* Copyright (C) 2011 Rainer Wichmann */
3/* */
4/* This program is free software; you can redistribute it */
5/* and/or modify */
6/* it under the terms of the GNU General Public License as */
7/* published by */
8/* the Free Software Foundation; either version 2 of the License, or */
9/* (at your option) any later version. */
10/* */
11/* This program is distributed in the hope that it will be useful, */
12/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
14/* GNU General Public License for more details. */
15/* */
16/* You should have received a copy of the GNU General Public License */
17/* along with this program; if not, write to the Free Software */
18/* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "config_xor.h"
21
22#ifndef NULL
23#if !defined(__cplusplus)
24#define NULL ((void*)0)
25#else
26#define NULL (0)
27#endif
28#endif
29
30#if defined(SH_WITH_CLIENT) || defined(SH_STANDALONE)
31
32#include "samhain.h"
33#include "sh_mem.h"
34#include "sh_error_min.h"
35#include "sh_utils.h"
36
37#define FIL__ _("sh_filetype.c")
38
39#include <string.h>
40#include <stdlib.h>
41#include <ctype.h>
42
43/* #define SH_FILE_MAIN 1 */
44#ifdef SH_FILE_MAIN
45#include <stdio.h>
46#define _(a) a
47#define N_(a) a
48#define sl_strlcpy strncpy
49#endif
50
51#define SH_FTYPE_MAX 32
52
53/* List of filetype description, in the format:
54 * offset : type(0=text, 1=binary) : length(if binary) : G1 : G2 : G3 : Name : Teststring
55 *
56 * This list is mostly taken from the 'filetype' library by Paul L Daniels.
57 *
58 * Copyright (c) 2003, PLD
59 * All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or
62 * without modification, are permitted provided that the
63 * following conditions are met:
64 *
65 * * Redistributions of source code must retain the above
66 * copyright notice, this list of conditions and the following
67 * disclaimer.
68 *
69 * * Redistributions in binary form must reproduce the above
70 * copyright notice, this list of conditions and the following
71 * disclaimer in the documentation and/or other materials provided
72 * with the distribution.
73 *
74 * * Neither the name of the PLD nor the names of its contributors
75 * may be used to endorse or promote products derived from this software
76 * without specific prior written permission.
77 *
78 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
79 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
80 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
81 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
82 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
83 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
84 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
85 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
86 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
87 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
88 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
89 * POSSIBILITY OF SUCH DAMAGE.
90 */
91
92
93char * sh_ftype_list[] = {
94
95 N_("6:0:0:IMAGE:COMPRESSED:JPG:JFIF Jpeg:JFIF"),
96 N_("0:0:0:IMAGE:COMPRESSED:PNG:PNG:=89PNG=0d=0a=1a=0a"),
97 N_("0:0:0:IMAGE:COMPRESSED:JPG:JFIF Jpeg:=FF=D8=FF"),
98 N_("0:0:0:IMAGE:COMPRESSED:GIF:GIF:GIF97a"),
99 N_("0:0:0:IMAGE:COMPRESSED:GIF:GIF:GIF89a"),
100 N_("0:0:0:IMAGE:COMPRESSED:GIF:GIF:GIF87a"),
101 N_("0:1:4:IMAGE:COMPRESSED:TIFF:TIFF-LE:II=2A=00"),
102 N_("0:1:4:IMAGE:COMPRESSED:TIFF:TIFF-BE:MM=00=2A"),
103 N_("0:1:2:IMAGE:COMPRESSED:PCX:PCX25:=0A=00"),
104 N_("0:1:2:IMAGE:COMPRESSED:PCX:PCX28WP:=0A=02"),
105 N_("0:1:2:IMAGE:COMPRESSED:PCX:PCX28NP:=0A=03"),
106 N_("0:1:2:IMAGE:COMPRESSED:PCX:PCX30:=0A=05"),
107 N_("0:0:0:IMAGE:RAW:BMP:Bitmap:BM"),
108 N_("0:0:0:IMAGE:RAW:XPM:XPM:/* XPM */"),
109 N_("0:0:0:IMAGE:SPECIAL:AUTOCAD:DWT:AC=31=30=31"),
110 N_("0:0:0:IMAGE:SPECIAL:AUTOCAD:DWF:(DWF V"),
111 N_("0:0:0:IMAGE:SPECIAL:AUTOCAD:WMF:=D7=CD=C6=9A"),
112 N_("0:0:0:IMAGE:SPECIAL:AUTOCAD:DWG:AC10"),
113 N_("8:0:0:IMAGE:SPECIAL:COREL:CorelDraw:CDR"),
114 N_("0:0:0:IMAGE:SPECIAL:FITS:Fits file:SIMPLE=20=20="),
115 N_("1536:0:0:IMAGE:SPECIAL:VISIO:VisioDraw:Visio"),
116 N_("128:0:0:IMAGE:SPECIAL:DICM:DICOM medical:DICM"),
117 N_("0:0:0:IMAGE:SPECIAL:PHS:Photoshop:8BPS"),
118 N_("0:0:0:IMAGE:SPECIAL:XCF:Gimp XCF:gimp xcf"),
119 N_("0:0:0:MOVIE:COMPRESSED:RIFF:RIFF/AVI Movie:RIFF"),
120 N_("0:0:0:MOVIE:RAW:MOV:SGI Movie:MOVI:.mov SGI Movie"),
121 N_("0:1:4:MOVIE:COMPRESSED:MPG:Mpeg 2:=00=00=01=BA"),
122 N_("0:1:4:MOVIE:COMPRESSED:MPG:Mpeg 2:=00=00=01=B3"),
123 N_("4:0:0:MOVIE:COMPRESSED:QT:QuickTime:moov"),
124 N_("4:0:0:MOVIE:COMPRESSED:QT:QuickTime:mdat"),
125 N_("36:0:0:MOVIE:COMPRESSED:QT:QuickTime:moov"),
126 N_("36:0:0:MOVIE:COMPRESSED:QT:QuickTime:mdat"),
127 N_("68:0:0:MOVIE:COMPRESSED:QT:QuickTime:moov"),
128 N_("68:0:0:MOVIE:COMPRESSED:QT:QuickTime:mdat"),
129 N_("0:1:3:MOVIE:COMPRESSED:FLI:FLIC animation:=00=11=AF"),
130 N_("0:0:0:MOVIE:COMPRESSED:FLASH:Flash data:FWS"),
131 N_("0:0:0:MOVIE:COMPRESSED:FLASH:Flash data:CWS"),
132 N_("0:0:0:MOVIE:COMPRESSED:FLASH:Flash video:FLV"),
133 N_("0:0:0:MOVIE:COMPRESSED:WMV:WMV:=30=26=B2=75=8E=66=CF"),
134 N_("0:0:0:AUDIO:RAW:SND:Sun Audio:.snd"),
135 N_("0:0:0:AUDIO:RAW:EMOD:EMOD:Mod"),
136 N_("1080:0:0:AUDIO:RAW:MOD:SoundTracker (.M.K):.M.K"),
137 N_("1080:0:0:AUDIO:RAW:MOD:SoundTracker (M.K.):M.K."),
138 N_("1080:0:0:AUDIO:RAW:MOD:NoiseTracker:N.T."),
139 N_("1080:0:0:AUDIO:RAW:MOD:SoundTracker (M!K!):M!K!"),
140 N_("1080:0:0:AUDIO:RAW:MOD:SoundTracker (M&K!):M&K!"),
141 N_("8:0:0:AUDIO:RAW:WAVE:Wave:WAVE"),
142 N_("0:1:4:AUDIO:RAW:DEC:DEC-Audio:=00=64=73=2E"),
143 N_("0:0:0:AUDIO:STANDARD:MIDI:Midi:MThd"),
144 N_("0:0:0:AUDIO:COMPRESSED:REAL:RealMedia:.RMF"),
145 N_("0:0:0:AUDIO:COMPRESSED:OGG:Ogg Vorbis:OggS"),
146 N_("0:0:0:AUDIO:COMPRESSED:FLAC:Flac:fLaC"),
147 N_("0:1:5:AUDIO:COMPRESSED:MP3:MP3 Audio:=49=44=33=02=00"),
148 N_("0:1:5:AUDIO:COMPRESSED:MP3:MP3 Audio:=49=44=33=03=00"),
149 N_("0:1:5:AUDIO:COMPRESSED:MP3:MP3 Audio:=49=44=33=04=00"),
150 N_("0:1:2:AUDIO:COMPRESSED:MP3:MP3 Audio:=ff=fb"),
151 N_("0:1:2:AUDIO:COMPRESSED:MP3:MP3 Audio:=ff=fa"),
152 N_("2:0:0:ARCHIVE:COMPRESSED:LHA:Lha 0:-lh0-"),
153 N_("2:0:0:ARCHIVE:COMPRESSED:LHA:Lha 1:-lh1-"),
154 N_("2:0:0:ARCHIVE:COMPRESSED:LHA:Lha 4:-lz4-"),
155 N_("2:0:0:ARCHIVE:COMPRESSED:LHA:Lha z5:-lz5-"),
156 N_("2:0:0:ARCHIVE:COMPRESSED:LHA:Lha 5:-lh5-"),
157 N_("0:0:0:ARCHIVE:COMPRESSED:RAR:RarArchive:Rar!"),
158 N_("0:0:0:ARCHIVE:COMPRESSED:ZIP:PkZip:PK=03=04"),
159 N_("0:0:0:ARCHIVE:COMPRESSED:7Z:7-Zip:=37=7A=BC=AF=27=1C"),
160 N_("0:0:0:ARCHIVE:COMPRESSED:COMPRESS:Compress:=1F=89"),
161 N_("0:0:0:ARCHIVE:COMPRESSED:GZIP:Gzip:=1F=8B"),
162 N_("0:0:0:ARCHIVE:COMPRESSED:BZIP2:Bzip2:BZh"),
163 N_("0:0:0:ARCHIVE:COMPRESSED:ARJ:ARJ:=60=ea"),
164 N_("0:0:0:ARCHIVE:COMPRESSED:ARJ:ARJ:=ea=60"),
165 N_("0:0:0:ARCHIVE:COMPRESSED:HPAK:HPack:HPAK"),
166 N_("0:0:0:ARCHIVE:COMPRESSED:JAM:Jam:=E9,=01JAM"),
167 N_("0:0:0:ARCHIVE:COMPRESSED:SQUISH:Squish:SQSH"),
168 N_("0:1:8:ARCHIVE:COMPRESSED:CAB:MS Cabinet:MSCF=00=00=00=00"),
169 N_("20:0:0:ARCHIVE:COMPRESSED:ZOO:Zoo:=FD=C4=A7=DC"),
170 N_("0:0:0:ARCHIVE:COMPRESSED:XPK:Amiga XPK Archive:XPKF"),
171 N_("0:0:0:ARCHIVE:PACKAGE:RPM:RPM:=ED=AB=EE=DB"),
172 N_("0:0:0:ARCHIVE:PACKAGE:DEB:DEB:!<arch>=0A""debian"),
173 N_("0:0:0:ARCHIVE:UNIX:AR:AR:!<arch>"),
174 N_("0:0:0:ARCHIVE:UNIX:AR:AR:<ar>"),
175 N_("257:1:8:ARCHIVE:UNIX:TAR:TAR:ustar=20=20=00"),
176 N_("257:1:6:ARCHIVE:UNIX:TAR:TAR:ustar=00"),
177 N_("0:0:0:LIBRARY:JAVA:CLASS:Java:=CA=FE=BA=BE"),
178 N_("2108:0:0:DOCUMENT:OFFICE:WORD:Word v5:MSWordDoc"),
179 N_("2112:0:0:DOCUMENT:OFFICE:WORD:Word v5:MSWordDoc"),
180 N_("2080:0:0:DOCUMENT:OFFICE:EXCEL:Excel v4:Microsoft Excel"),
181 N_("2080:0:0:DOCUMENT:OFFICE:WORD:MS Word:Microsoft Word"),
182 N_("0:0:0:DOCUMENT:OFFICE:WORD:Word:=94=A6=2E"),
183 N_("512:1:19:DOCUMENT:OFFICE:WORD:Word:R=00o=00o=00t=00 =00""E=00n=00t=00r=00y"),
184 N_("0:1:9:DOCUMENT:OFFICE:ALL:MSOffice:=D0=CF=11=E0=A1=B1=1A=E1=00"),
185 N_("0:0:0:DOCUMENT:ADOBE:PDF:PortableDocument:%PDF-"),
186 N_("0:0:0:DOCUMENT:ADOBE:EPS:EncapsulatedPS:%!PS-ADOBE EPS"),
187 N_("0:0:0:DOCUMENT:STANDARD:RTF:RichText:{\\rtf"),
188 N_("6:1:4:DOCUMENT:STANDARD:RTF:RichText Compressed:=00=00LZ"),
189 N_("6:0:0:DOCUMENT:ID:VCARD:VCARD:vcard"),
190 N_("0:0:0:EXECUTABLE:DOS:EXE:DosExe:MZ"),
191 N_("0:0:0:EXECUTABLE:DOS:EXE:DosExe:LZ"),
192 N_("0:0:0:EXECUTABLE:DOS:COM:DosCom 1:=E9"),
193 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Bourne:#!/bin/sh"),
194 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Bourne:#! /bin/sh"),
195 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Bourne:#!/bin/bash"),
196 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Bourne:#! /bin/bash"),
197 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Bourne:#!/usr/bin/bash"),
198 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Bourne:#! /usr/bin/bash"),
199 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Csh:#!/usr/bin/csh"),
200 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Csh:#! /usr/bin/csh"),
201 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Csh:#!/bin/csh"),
202 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Csh:#! /bin/csh"),
203 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Korn:#! /usr/bin/ksh"),
204 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Korn:#!/usr/bin/ksh"),
205 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Korn:#! /bin/ksh"),
206 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Korn:#!/bin/ksh"),
207 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Tenex:#!/usr/bin/tcsh"),
208 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Tenex:#! /usr/bin/tcsh"),
209 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Tenex:#!/bin/tcsh"),
210 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Tenex:#! /bin/tcsh"),
211 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Zsh:#!/usr/bin/zsh"),
212 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Zsh:#! /usr/bin/zsh"),
213 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Zsh:#!/bin/zsh"),
214 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Zsh:#! /bin/zsh"),
215 N_("0:0:0:EXECUTABLE:UNIX:SHELL:ash:#!/usr/bin/ash"),
216 N_("0:0:0:EXECUTABLE:UNIX:SHELL:ash:#! /usr/bin/ash"),
217 N_("0:0:0:EXECUTABLE:UNIX:SHELL:ash:#!/bin/ash"),
218 N_("0:0:0:EXECUTABLE:UNIX:SHELL:ash:#! /bin/ash"),
219 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#!/usr/bin/nawk"),
220 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#! /usr/bin/nawk"),
221 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#!/bin/nawk"),
222 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#! /bin/nawk"),
223 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#!/bin/gawk"),
224 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#! /bin/gawk"),
225 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#!/bin/awk"),
226 N_("0:0:0:EXECUTABLE:UNIX:SHELL:awk:#! /bin/awk"),
227 N_("0:0:0:EXECUTABLE:UNIX:SHELL:perl:#!/usr/bin/perl"),
228 N_("0:0:0:EXECUTABLE:UNIX:SHELL:perl:#! /usr/bin/perl"),
229 N_("0:0:0:EXECUTABLE:UNIX:SHELL:perl:#!/bin/perl"),
230 N_("0:0:0:EXECUTABLE:UNIX:SHELL:perl:#! /bin/perl"),
231 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Shell script:#!/"),
232 N_("0:0:0:EXECUTABLE:UNIX:SHELL:Shell script:#! /"),
233 N_("0:0:0:EXECUTABLE:UNIX:ELF:Linux ELF32:=7f""ELF=01"),
234 N_("0:0:0:EXECUTABLE:UNIX:ELF:Linux ELF:=7f""ELF=02"),
235 N_("0:0:0:EXECUTABLE:DOS:COM:DosCom 2:=8c"),
236 N_("0:0:0:EXECUTABLE:DOS:COM:DosCom 3:=eb"),
237 N_("0:0:0:EXECUTABLE:DOS:COM:DosCom 4:=b8"),
238 N_("0:1:4:EXECUTABLE:AMIGAOS:EXECUTABLE:AmigaOS Executable:=00=00=03=F3"),
239 N_("0:1:20:DATABASE:ANY:ACCESS:MSAccess:=00=01=00=00Standard=20Jet=20""DB=00"),
240 N_("0:1:2:DATABASE:ANY:MYSQL:MySQL database:=fe=01"),
241 N_("0:1:4:DATABASE:ANY:MYSQL:MySQL database:=fe=fe=03=00"),
242 N_("0:1:4:DATABASE:ANY:MYSQL:MySQL database:=fe=fe=07=00"),
243 N_("0:1:4:DATABASE:ANY:MYSQL:MySQL database:=fe=fe=05=00"),
244 N_("0:1:4:DATABASE:ANY:MYSQL:MySQL database:=fe=fe=06=00"),
245
246 NULL,
247 NULL,
248 NULL,
249 NULL,
250
251 NULL,
252 NULL,
253 NULL,
254 NULL,
255
256 NULL,
257 NULL,
258 NULL,
259 NULL,
260
261 NULL,
262 NULL,
263 NULL,
264 NULL,
265
266 NULL,
267};
268
269static unsigned int sh_ftype_def = 0;
270
271#define SH_FTYPE_ADD 16
272
273struct sh_ftype_rec {
274 size_t offset;
275 size_t length;
276 char pattern[SH_FTYPE_MAX];
277
278 char type[SH_FTYPE_MAX];
279};
280
281
282struct sh_ftype_rec ** sh_ftype_arr = NULL;
283static unsigned int sh_ftype_nn = 0;
284
285#if !defined(SH_FILE_MAIN)
286
287static unsigned int sh_ftype_usr = 0;
288
289extern char * unquote_string (const char * str, size_t len);
290
291int sh_restrict_add_ftype(const char * str)
292{
293 size_t len;
294 char * cond;
295
296 if (sh_ftype_def == 0)
297 {
298 while(sh_ftype_list[sh_ftype_def] != NULL) ++sh_ftype_def;
299 }
300
301 if (!str)
302 {
303 if (sh_ftype_usr > 0)
304 {
305 unsigned int i, j = sh_ftype_def;
306
307 for (i = 0; i < sh_ftype_usr; ++i)
308 {
309 SH_FREE(sh_ftype_list[j+i]);
310 sh_ftype_list[j+i] = NULL;
311 }
312 sh_ftype_usr = 0;
313 }
314
315 if (sh_ftype_arr)
316 {
317 unsigned int i = 0;
318
319 while(sh_ftype_arr[i] != NULL)
320 {
321 SH_FREE(sh_ftype_arr[i]);
322 ++i;
323 }
324 SH_FREE(sh_ftype_arr);
325 sh_ftype_arr = NULL;
326 }
327 }
328 else if (sh_ftype_usr < SH_FTYPE_ADD)
329 {
330 len = strlen(str);
331 cond = unquote_string(str, len);
332 sh_ftype_list[sh_ftype_def+sh_ftype_usr] = cond;
333 ++sh_ftype_usr;
334 }
335 else
336 {
337 return -1;
338 }
339 return 0;
340}
341
342
343#endif
344
345
346static int init_record(unsigned int n, char * define,
347 struct sh_ftype_rec * record)
348{
349 unsigned int offset, dtype, length, i = 0, xn = 0;
350 char type[SH_FTYPE_MAX];
351 char pattern[SH_FTYPE_MAX];
352
353 char * end;
354 char * start;
355
356 offset = strtoul(define, &end, 0);
357 if (*end != ':')
358 return -1;
359
360 start = end; ++start;
361 dtype = strtoul(start, &end, 0);
362 if (*end != ':')
363 return -1;
364
365 start = end; ++start;
366 length = strtoul(start, &end, 0);
367 if (*end != ':')
368 return -1;
369
370 start = end; ++start;
371
372 while (*start && (i < sizeof(type)))
373 {
374 type[i] = *start; ++start;
375 if (type[i] == ':')
376 ++xn;
377 if (xn == 3)
378 {
379 type[i] = '\0';
380 break;
381 }
382 ++i;
383 }
384 if (xn != 3)
385 return -1;
386
387 start = strchr(start, ':');
388
389 if (!start)
390 return -1;
391
392 ++start;
393
394 if (dtype == 0)
395 {
396 sl_strlcpy(pattern, start, sizeof(pattern));
397 length = strlen(pattern);
398 }
399 else if (length <= sizeof(pattern))
400 {
401 memcpy(pattern, start, length);
402 }
403 else
404 {
405 return -1;
406 }
407
408 for (i = 0; i < n; ++i)
409 {
410 if (sh_ftype_arr[i]->length <= length &&
411 sh_ftype_arr[i]->offset == offset)
412 {
413 if (0 == memcmp(sh_ftype_arr[i]->pattern, pattern,
414 sh_ftype_arr[i]->length))
415 {
416#ifdef SH_FILE_MAIN
417 fprintf(stderr,
418 "Pattern %d (%s / %s) override by earlier pattern %d (%s / %s)\n",
419 n, type, pattern,
420 i, sh_ftype_arr[i]->type, sh_ftype_arr[i]->pattern);
421#else
422 char errbuf[256];
423
424 sl_snprintf(errbuf, sizeof(errbuf),
425 _("Pattern %d (%s) override by earlier pattern %d (%s)"),
426 n, type,
427 i, sh_ftype_arr[i]->type);
428 sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
429 errbuf,
430 _("init_record"));
431#endif
432 }
433 }
434 }
435
436
437 record->offset = offset;
438 record->length = length;
439 memcpy(record->pattern, pattern, length);
440 sl_strlcpy(record->type, type, SH_FTYPE_MAX);
441
442 return 0;
443}
444
445static void file_arr_init()
446{
447 unsigned int i, nn = 0;
448
449 if (sh_ftype_def == 0)
450 {
451 while(sh_ftype_list[sh_ftype_def] != NULL) ++sh_ftype_def;
452 }
453
454 while (sh_ftype_list[nn] != NULL) ++nn;
455
456#ifdef SH_FILE_MAIN
457 printf("%d definitions found, defined = %d\n", nn, sh_ftype_def);
458#endif
459
460#ifdef SH_FILE_MAIN
461 sh_ftype_arr = calloc((nn+1), sizeof(struct sh_ftype_rec *));
462#else
463 sh_ftype_arr = SH_ALLOC((nn+1) * sizeof(struct sh_ftype_rec *));
464#endif
465
466 for(i = 0; i < nn; i++)
467 {
468#ifdef SH_FILE_MAIN
469 sh_ftype_arr[i] = calloc(1, sizeof(struct sh_ftype_rec));
470#else
471 sh_ftype_arr[i] = SH_ALLOC(sizeof(struct sh_ftype_rec));
472#endif
473
474 memset(sh_ftype_arr[i], 0, sizeof(struct sh_ftype_rec));
475 if (i < sh_ftype_def)
476 {
477 char * p = _(sh_ftype_list[i]);
478 size_t len = strlen(p);
479 char * cond = unquote_string(p, len);
480
481 init_record(i, cond, sh_ftype_arr[i]);
482 }
483 else
484 {
485 init_record(i, sh_ftype_list[i], sh_ftype_arr[i]);
486 }
487 }
488 sh_ftype_arr[nn] = NULL;
489 sh_ftype_nn = nn;
490
491 return;
492}
493
494static char * check_filetype(char * filetype,
495 const char * buffer, size_t buflen)
496{
497 unsigned int i;
498 const char * p;
499
500 if (!sh_ftype_arr)
501 {
502 file_arr_init();
503 }
504
505 for (i = 0; i < sh_ftype_nn; ++i)
506 {
507 if (sh_ftype_arr[i]->length > 0 &&
508 (sh_ftype_arr[i]->length + sh_ftype_arr[i]->offset) < buflen)
509 {
510 p = &buffer[sh_ftype_arr[i]->offset];
511
512 if (0 == memcmp(p, sh_ftype_arr[i]->pattern, sh_ftype_arr[i]->length))
513 {
514 sl_strlcpy(filetype, sh_ftype_arr[i]->type, SH_FTYPE_MAX);
515 return (filetype);
516 }
517 }
518 }
519
520 if (buflen > 0) {
521
522 int flag = 0;
523
524 p = buffer;
525 for (i = 0; i < buflen; ++i) {
526 if (*p == '\0')
527 {
528 sl_strlcpy(filetype, _("FILE:BINARY:UNKNOWN"), SH_FTYPE_MAX);
529 goto out;
530 }
531 else if (!isgraph((int)*p) && !isspace((int)*p))
532 {
533 flag = 1;
534 }
535 ++p;
536 }
537 if (flag == 0)
538 {
539 sl_strlcpy(filetype, _("FILE:TEXT:ASCII"), SH_FTYPE_MAX);
540 goto out;
541 }
542 }
543 sl_strlcpy(filetype, _("FILE:UNKNOWN:UNKNOWN"), SH_FTYPE_MAX);
544 out:
545 return filetype;
546}
547
548#if !defined(SH_FILE_MAIN)
549
550int matches_filetype(SL_TICKET ft, char * test_type)
551{
552 char buffer[3072];
553 char filetype[SH_FTYPE_MAX];
554 long len;
555
556 len = sl_read_timeout (ft, buffer, sizeof(buffer), 12, S_TRUE);
557
558 sl_rewind(ft);
559
560 if (len > 0)
561 {
562 check_filetype(filetype, buffer, len);
563 }
564 else
565 {
566 sl_strlcpy(filetype, _("FILE:UNKNOWN:UNKNOWN"), SH_FTYPE_MAX);
567 }
568
569 if (0 == strcmp(filetype, test_type))
570 {
571 return 1;
572 }
573
574 return 0;
575}
576
577#else
578/* SH_FILE_MAIN */
579#include <unistd.h>
580
581int main (int argc, char * argv[])
582{
583 char buffer[3072];
584 char filetype[SH_FTYPE_MAX];
585 size_t len;
586
587 FILE * fh = fopen(argv[1], "r");
588
589 if (fh)
590 {
591 int fd = fileno(fh);
592
593 len = read(fd, buffer, 3072);
594
595 check_filetype(filetype, buffer, len);
596
597 fprintf(stdout, "%s: %s\n", argv[1], filetype);
598
599 return 0;
600 }
601 return 1;
602}
603#endif
604
605#endif
606/* #if defined(SH_WITH_CLIENT) || defined(SH_STANDALONE) */
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