Virgin import of Christos Zoulas's FILE 5.00.
This commit is contained in:
David E. O'Brien
parent
1ff822f5fe
commit
4f3dd34290
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/vendor/file/dist/; revision=191739
5
Magdir/wireless
Normal file
5
Magdir/wireless
Normal file
@ -0,0 +1,5 @@
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#------------------------------------------------------------------------------
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# wireless-regdb: file(1) magic for CRDA wireless-regdb file format
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#
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0 string RGDB CRDA wireless regulatory database file
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>4 belong 19 (Version 1)
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18
Makefile.am-src
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18
Makefile.am-src
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@ -0,0 +1,18 @@
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MAGIC = $(pkgdatadir)/magic
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lib_LTLIBRARIES = libmagic.la
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include_HEADERS = magic.h
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bin_PROGRAMS = file
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AM_CPPFLAGS = -DMAGIC='"$(MAGIC)"'
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AM_CFLAGS = @WARNINGS@
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libmagic_la_SOURCES = magic.c apprentice.c softmagic.c ascmagic.c \
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encoding.c compress.c is_tar.c readelf.c print.c fsmagic.c \
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funcs.c file.h names.h patchlevel.h readelf.h tar.h apptype.c \
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file_opts.h elfclass.h mygetopt.h cdf.c cdf_time.c readcdf.c cdf.h
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libmagic_la_LDFLAGS = -no-undefined -version-info 1:0:0
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libmagic_la_LIBADD = $(LTLIBOBJS)
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file_SOURCES = file.c
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file_LDADD = libmagic.la
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298
cdf.h
Normal file
298
cdf.h
Normal file
@ -0,0 +1,298 @@
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/*-
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* Copyright (c) 2008 Christos Zoulas
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Info from: http://sc.openoffice.org/compdocfileformat.pdf
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*/
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#ifndef _H_CDF_
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#define _H_CDF_
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typedef int32_t cdf_secid_t;
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#define CDF_LOOP_LIMIT 10000
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#define CDF_SECID_NULL 0
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#define CDF_SECID_FREE -1
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#define CDF_SECID_END_OF_CHAIN -2
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#define CDF_SECID_SECTOR_ALLOCATION_TABLE -3
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#define CDF_SECID_MASTER_SECTOR_ALLOCATION_TABLE -4
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typedef struct {
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uint64_t h_magic;
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#define CDF_MAGIC 0xE11AB1A1E011CFD0LL
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uint64_t h_uuid[2];
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uint16_t h_revision;
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uint16_t h_version;
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uint16_t h_byte_order;
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uint16_t h_sec_size_p2;
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uint16_t h_short_sec_size_p2;
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uint8_t h_unused0[10];
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uint32_t h_num_sectors_in_sat;
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uint32_t h_secid_first_directory;
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uint8_t h_unused1[4];
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uint32_t h_min_size_standard_stream;
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cdf_secid_t h_secid_first_sector_in_short_sat;
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uint32_t h_num_sectors_in_short_sat;
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cdf_secid_t h_secid_first_sector_in_master_sat;
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uint32_t h_num_sectors_in_master_sat;
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cdf_secid_t h_master_sat[436/4];
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} cdf_header_t;
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#define CDF_SEC_SIZE(h) (1 << (h)->h_sec_size_p2)
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#define CDF_SEC_POS(h, secid) (CDF_SEC_SIZE(h) + (secid) * CDF_SEC_SIZE(h))
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#define CDF_SHORT_SEC_SIZE(h) (1 << (h)->h_short_sec_size_p2)
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#define CDF_SHORT_SEC_POS(h, secid) ((secid) * CDF_SHORT_SEC_SIZE(h))
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typedef int32_t cdf_dirid_t;
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#define CDF_DIRID_NULL -1
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typedef int64_t cdf_timestamp_t;
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#define CDF_BASE_YEAR 1601
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#define CDF_TIME_PREC 10000000
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typedef struct {
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uint16_t d_name[32];
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uint16_t d_namelen;
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uint8_t d_type;
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#define CDF_DIR_TYPE_EMPTY 0
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#define CDF_DIR_TYPE_USER_STORAGE 1
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#define CDF_DIR_TYPE_USER_STREAM 2
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#define CDF_DIR_TYPE_LOCKBYTES 3
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#define CDF_DIR_TYPE_PROPERTY 4
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#define CDF_DIR_TYPE_ROOT_STORAGE 5
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uint8_t d_color;
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#define CDF_DIR_COLOR_READ 0
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#define CDF_DIR_COLOR_BLACK 1
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cdf_dirid_t d_left_child;
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cdf_dirid_t d_right_child;
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cdf_dirid_t d_storage;
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uint64_t d_storage_uuid[2];
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uint32_t d_flags;
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cdf_timestamp_t d_created;
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cdf_timestamp_t d_modified;
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cdf_secid_t d_stream_first_sector;
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uint32_t d_size;
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uint32_t d_unused0;
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} cdf_directory_t;
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#define CDF_DIRECTORY_SIZE 128
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typedef struct {
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cdf_secid_t *sat_tab;
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size_t sat_len;
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} cdf_sat_t;
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typedef struct {
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cdf_directory_t *dir_tab;
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size_t dir_len;
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} cdf_dir_t;
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typedef struct {
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void *sst_tab;
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size_t sst_len;
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size_t sst_dirlen;
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} cdf_stream_t;
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typedef struct {
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uint32_t cl_dword;
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uint16_t cl_word[2];
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uint8_t cl_two[2];
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uint8_t cl_six[6];
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} cdf_classid_t;
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typedef struct {
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uint16_t si_byte_order;
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uint16_t si_zero;
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uint16_t si_os_version;
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uint16_t si_os;
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cdf_classid_t si_class;
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uint32_t si_count;
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} cdf_summary_info_header_t;
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#define CDF_SECTION_DECLARATION_OFFSET 0x1c
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typedef struct {
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cdf_classid_t sd_class;
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uint32_t sd_offset;
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} cdf_section_declaration_t;
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typedef struct {
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uint32_t sh_len;
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uint32_t sh_properties;
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} cdf_section_header_t;
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typedef struct {
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uint32_t pi_id;
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uint32_t pi_type;
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union {
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uint16_t _pi_u16;
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int16_t _pi_s16;
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uint32_t _pi_u32;
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int32_t _pi_s32;
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uint64_t _pi_u64;
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int64_t _pi_s64;
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cdf_timestamp_t _pi_tp;
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struct {
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uint32_t s_len;
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const char *s_buf;
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} _pi_str;
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} pi_val;
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#define pi_u64 pi_val._pi_u64
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#define pi_s64 pi_val._pi_s64
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#define pi_u32 pi_val._pi_u32
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#define pi_s32 pi_val._pi_s32
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#define pi_u16 pi_val._pi_u16
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#define pi_s16 pi_val._pi_s16
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#define pi_tp pi_val._pi_tp
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#define pi_str pi_val._pi_str
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} cdf_property_info_t;
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#define CDF_ROUND(val, by) (((val) + (by) - 1) & ~((by) - 1))
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/* Variant type definitions */
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#define CDF_EMPTY 0x00000000
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#define CDF_NULL 0x00000001
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#define CDF_SIGNED16 0x00000002
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#define CDF_SIGNED32 0x00000003
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#define CDF_FLOAT 0x00000004
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#define CDF_DOUBLE 0x00000005
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#define CDF_CY 0x00000006
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#define CDF_DATE 0x00000007
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#define CDF_BSTR 0x00000008
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#define CDF_DISPATCH 0x00000009
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#define CDF_ERROR 0x0000000a
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#define CDF_BOOL 0x0000000b
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#define CDF_VARIANT 0x0000000c
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#define CDF_UNKNOWN 0x0000000d
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#define CDF_DECIMAL 0x0000000e
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#define CDF_SIGNED8 0x00000010
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#define CDF_UNSIGNED8 0x00000011
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#define CDF_UNSIGNED16 0x00000012
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#define CDF_UNSIGNED32 0x00000013
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#define CDF_SIGNED64 0x00000014
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#define CDF_UNSIGNED64 0x00000015
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#define CDF_INT 0x00000016
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#define CDF_UINT 0x00000017
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#define CDF_VOID 0x00000018
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#define CDF_HRESULT 0x00000019
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#define CDF_PTR 0x0000001a
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#define CDF_SAFEARRAY 0x0000001b
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#define CDF_CARRAY 0x0000001c
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#define CDF_USERDEFINED 0x0000001d
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#define CDF_LENGTH32_STRING 0x0000001e
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#define CDF_LENGTH32_WSTRING 0x0000001f
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#define CDF_FILETIME 0x00000040
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#define CDF_BLOB 0x00000041
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#define CDF_STREAM 0x00000042
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#define CDF_STORAGE 0x00000043
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#define CDF_STREAMED_OBJECT 0x00000044
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#define CDF_STORED_OBJECT 0x00000045
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#define CDF_BLOB_OBJECT 0x00000046
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#define CDF_CLIPBOARD 0x00000047
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#define CDF_CLSID 0x00000048
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#define CDF_VECTOR 0x00001000
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#define CDF_ARRAY 0x00002000
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#define CDF_BYREF 0x00004000
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#define CDF_RESERVED 0x00008000
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#define CDF_ILLEGAL 0x0000ffff
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#define CDF_ILLEGALMASKED 0x00000fff
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#define CDF_TYPEMASK 0x00000fff
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#define CDF_PROPERTY_CODE_PAGE 0x00000001
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#define CDF_PROPERTY_TITLE 0x00000002
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#define CDF_PROPERTY_SUBJECT 0x00000003
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#define CDF_PROPERTY_AUTHOR 0x00000004
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#define CDF_PROPERTY_KEYWORDS 0x00000005
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#define CDF_PROPERTY_COMMENTS 0x00000006
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#define CDF_PROPERTY_TEMPLATE 0x00000007
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#define CDF_PROPERTY_LAST_SAVED_BY 0x00000008
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#define CDF_PROPERTY_REVISION_NUMBER 0x00000009
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#define CDF_PROPERTY_TOTAL_EDITING_TIME 0x0000000a
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#define CDF_PROPERTY_LAST_PRINTED 0X0000000b
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#define CDF_PROPERTY_CREATE_TIME 0x0000000c
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#define CDF_PROPERTY_LAST_SAVED_TIME 0x0000000d
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#define CDF_PROPERTY_NUMBER_OF_PAGES 0x0000000e
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#define CDF_PROPERTY_NUMBER_OF_WORDS 0x0000000f
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#define CDF_PROPERTY_NUMBER_OF_CHARACTERS 0x00000010
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#define CDF_PROPERTY_THUMBNAIL 0x00000011
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#define CDF_PROPERTY_NAME_OF_APPLICATION 0x00000012
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#define CDF_PROPERTY_SECURITY 0x00000013
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#define CDF_PROPERTY_LOCALE_ID 0x80000000
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struct timespec;
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int cdf_timestamp_to_timespec(struct timespec *, cdf_timestamp_t);
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int cdf_timespec_to_timestamp(cdf_timestamp_t *, const struct timespec *);
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int cdf_read_header(int, cdf_header_t *);
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void cdf_swap_header(cdf_header_t *);
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void cdf_unpack_header(cdf_header_t *, char *);
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void cdf_swap_dir(cdf_directory_t *);
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void cdf_unpack_dir(cdf_directory_t *, char *);
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void cdf_swap_class(cdf_classid_t *);
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ssize_t cdf_read_sector(int, void *, size_t, size_t, const cdf_header_t *,
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cdf_secid_t);
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ssize_t cdf_read_short_sector(const cdf_stream_t *, void *, size_t, size_t,
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const cdf_header_t *, cdf_secid_t);
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int cdf_read_sat(int, cdf_header_t *, cdf_sat_t *);
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size_t cdf_count_chain(const cdf_header_t *, const cdf_sat_t *,
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cdf_secid_t);
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int cdf_read_long_sector_chain(int, const cdf_header_t *,
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const cdf_sat_t *, cdf_secid_t, size_t, cdf_stream_t *);
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int cdf_read_short_sector_chain(const cdf_header_t *, const cdf_sat_t *,
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const cdf_stream_t *, cdf_secid_t, size_t, cdf_stream_t *);
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int cdf_read_sector_chain(int, const cdf_header_t *,
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const cdf_sat_t *, const cdf_sat_t *, const cdf_stream_t *, cdf_secid_t,
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size_t, cdf_stream_t *);
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int cdf_read_dir(int, const cdf_header_t *, const cdf_sat_t *, cdf_dir_t *);
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int cdf_read_ssat(int, const cdf_header_t *, const cdf_sat_t *, cdf_sat_t *);
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int cdf_read_short_stream(int, const cdf_header_t *, const cdf_sat_t *,
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const cdf_dir_t *, cdf_stream_t *);
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int cdf_read_property_info(const cdf_stream_t *, uint32_t,
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cdf_property_info_t **, size_t *, size_t *);
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int cdf_read_summary_info(int, const cdf_header_t *, const cdf_sat_t *,
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const cdf_sat_t *, const cdf_stream_t *, const cdf_dir_t *,
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cdf_stream_t *);
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int cdf_unpack_summary_info(const cdf_stream_t *, cdf_summary_info_header_t *,
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cdf_property_info_t **, size_t *);
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int cdf_print_classid(char *, size_t, const cdf_classid_t *);
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int cdf_print_property_name(char *, size_t, uint32_t);
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int cdf_print_elapsed_time(char *, size_t, cdf_timestamp_t);
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uint16_t cdf_tole2(uint16_t);
|
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uint32_t cdf_tole4(uint32_t);
|
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uint64_t cdf_tole8(uint64_t);
|
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|
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#ifdef CDF_DEBUG
|
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void cdf_dump_header(const cdf_header_t *);
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void cdf_dump_sat(const char *, const cdf_header_t *, const cdf_sat_t *);
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void cdf_dump(void *, size_t);
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void cdf_dump_stream(const cdf_header_t *, const cdf_stream_t *);
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void cdf_dump_dir(int, const cdf_header_t *, const cdf_sat_t *,
|
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const cdf_sat_t *, const cdf_stream_t *, const cdf_dir_t *);
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void cdf_dump_property_info(const cdf_property_info_t *, size_t);
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void cdf_dump_summary_info(const cdf_header_t *, const cdf_stream_t *);
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#endif
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#endif /* _H_CDF_ */
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182
cdf_time.c
Normal file
182
cdf_time.c
Normal file
@ -0,0 +1,182 @@
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/*-
|
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* Copyright (c) 2008 Christos Zoulas
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include "file.h"
|
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|
||||
#ifndef lint
|
||||
FILE_RCSID("@(#)$File: cdf_time.c,v 1.5 2009/02/03 20:27:51 christos Exp $")
|
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#endif
|
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|
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#include <time.h>
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#ifdef TEST
|
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#include <err.h>
|
||||
#endif
|
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#include <string.h>
|
||||
|
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#include "cdf.h"
|
||||
|
||||
#define isleap(y) ((((y) % 4) == 0) && \
|
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((((y) % 100) != 0) || (((y) % 400) == 0)))
|
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|
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static const int mdays[] = {
|
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31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
|
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};
|
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|
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/*
|
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* Return the number of days between jan 01 1601 and jan 01 of year.
|
||||
*/
|
||||
static int
|
||||
cdf_getdays(int year)
|
||||
{
|
||||
int days = 0;
|
||||
int y;
|
||||
|
||||
for (y = CDF_BASE_YEAR; y < year; y++)
|
||||
days += isleap(y) + 365;
|
||||
|
||||
return days;
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||||
}
|
||||
|
||||
/*
|
||||
* Return the day within the month
|
||||
*/
|
||||
static int
|
||||
cdf_getday(int year, int days)
|
||||
{
|
||||
size_t m;
|
||||
|
||||
for (m = 0; m < sizeof(mdays) / sizeof(mdays[0]); m++) {
|
||||
int sub = mdays[m] + (m == 1 && isleap(year));
|
||||
if (days < sub)
|
||||
return days;
|
||||
days -= sub;
|
||||
}
|
||||
return days;
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the 0...11 month number.
|
||||
*/
|
||||
static int
|
||||
cdf_getmonth(int year, int days)
|
||||
{
|
||||
size_t m;
|
||||
|
||||
for (m = 0; m < sizeof(mdays) / sizeof(mdays[0]); m++) {
|
||||
days -= mdays[m];
|
||||
if (m == 1 && isleap(year))
|
||||
days--;
|
||||
if (days <= 0)
|
||||
return (int)m;
|
||||
}
|
||||
return (int)m;
|
||||
}
|
||||
|
||||
int
|
||||
cdf_timestamp_to_timespec(struct timespec *ts, cdf_timestamp_t t)
|
||||
{
|
||||
struct tm tm;
|
||||
#ifdef HAVE_STRUCT_TM_TM_ZONE
|
||||
static char UTC[] = "UTC";
|
||||
#endif
|
||||
|
||||
/* Unit is 100's of nanoseconds */
|
||||
ts->tv_nsec = (t % CDF_TIME_PREC) * 100;
|
||||
|
||||
t /= CDF_TIME_PREC;
|
||||
tm.tm_sec = t % 60;
|
||||
t /= 60;
|
||||
|
||||
tm.tm_min = t % 60;
|
||||
t /= 60;
|
||||
|
||||
tm.tm_hour = t % 24;
|
||||
t /= 24;
|
||||
|
||||
// XXX: Approx
|
||||
tm.tm_year = CDF_BASE_YEAR + (t / 365);
|
||||
|
||||
int rdays = cdf_getdays(tm.tm_year);
|
||||
t -= rdays;
|
||||
tm.tm_mday = cdf_getday(tm.tm_year, t);
|
||||
tm.tm_mon = cdf_getmonth(tm.tm_year, t);
|
||||
tm.tm_wday = 0;
|
||||
tm.tm_yday = 0;
|
||||
tm.tm_isdst = 0;
|
||||
#ifdef HAVE_STRUCT_TM_TM_GMTOFF
|
||||
tm.tm_gmtoff = 0;
|
||||
#endif
|
||||
#ifdef HAVE_STRUCT_TM_TM_ZONE
|
||||
tm.tm_zone = UTC;
|
||||
#endif
|
||||
tm.tm_year -= 1900;
|
||||
ts->tv_sec = mktime(&tm);
|
||||
if (ts->tv_sec == -1) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
cdf_timespec_to_timestamp(cdf_timestamp_t *t, const struct timespec *ts)
|
||||
{
|
||||
(void)&t;
|
||||
(void)&ts;
|
||||
#ifdef notyet
|
||||
struct tm tm;
|
||||
if (gmtime_r(&ts->ts_sec, &tm) == NULL) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
*t = (ts->ts_nsec / 100) * CDF_TIME_PREC;
|
||||
*t = tm.tm_sec;
|
||||
*t += tm.tm_min * 60;
|
||||
*t += tm.tm_hour * 60 * 60;
|
||||
*t += tm.tm_mday * 60 * 60 * 24;
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#ifdef TEST
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
struct timespec ts;
|
||||
static const cdf_timestamp_t tst = 0x01A5E403C2D59C00ULL;
|
||||
static const char *ref = "Sat Apr 23 01:30:00 1977";
|
||||
char *p, *q;
|
||||
|
||||
cdf_timestamp_to_timespec(&ts, tst);
|
||||
p = ctime(&ts.tv_sec);
|
||||
if ((q = strchr(p, '\n')) != NULL)
|
||||
*q = '\0';
|
||||
if (strcmp(ref, p) != 0)
|
||||
errx(1, "Error date %s != %s\n", ref, p);
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
484
encoding.c
Normal file
484
encoding.c
Normal file
@ -0,0 +1,484 @@
|
||||
/*
|
||||
* Copyright (c) Ian F. Darwin 1986-1995.
|
||||
* Software written by Ian F. Darwin and others;
|
||||
* maintained 1995-present by Christos Zoulas and others.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice immediately at the beginning of the file, without modification,
|
||||
* this list of conditions, and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
||||
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
/*
|
||||
* Encoding -- determine the character encoding of a text file.
|
||||
*
|
||||
* Joerg Wunsch <joerg@freebsd.org> wrote the original support for 8-bit
|
||||
* international characters.
|
||||
*/
|
||||
|
||||
#include "file.h"
|
||||
|
||||
#ifndef lint
|
||||
FILE_RCSID("@(#)$File: encoding.c,v 1.3 2009/02/03 20:27:51 christos Exp $")
|
||||
#endif /* lint */
|
||||
|
||||
#include "magic.h"
|
||||
#include <string.h>
|
||||
#include <memory.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
|
||||
private int looks_ascii(const unsigned char *, size_t, unichar *, size_t *);
|
||||
private int looks_utf8_with_BOM(const unsigned char *, size_t, unichar *,
|
||||
size_t *);
|
||||
private int looks_ucs16(const unsigned char *, size_t, unichar *, size_t *);
|
||||
private int looks_latin1(const unsigned char *, size_t, unichar *, size_t *);
|
||||
private int looks_extended(const unsigned char *, size_t, unichar *, size_t *);
|
||||
private void from_ebcdic(const unsigned char *, size_t, unsigned char *);
|
||||
|
||||
/*
|
||||
* Try to determine whether text is in some character code we can
|
||||
* identify. Each of these tests, if it succeeds, will leave
|
||||
* the text converted into one-unichar-per-character Unicode in
|
||||
* ubuf, and the number of characters converted in ulen.
|
||||
*/
|
||||
protected int
|
||||
file_encoding(struct magic_set *ms, const unsigned char *buf, size_t nbytes, unichar **ubuf, size_t *ulen, const char **code, const char **code_mime, const char **type)
|
||||
{
|
||||
size_t mlen;
|
||||
int rv = 1, ucs_type;
|
||||
unsigned char *nbuf = NULL;
|
||||
|
||||
mlen = (nbytes + 1) * sizeof(nbuf[0]);
|
||||
if ((nbuf = CAST(unsigned char *, calloc((size_t)1, mlen))) == NULL) {
|
||||
file_oomem(ms, mlen);
|
||||
goto done;
|
||||
}
|
||||
mlen = (nbytes + 1) * sizeof((*ubuf)[0]);
|
||||
if ((*ubuf = CAST(unichar *, calloc((size_t)1, mlen))) == NULL) {
|
||||
file_oomem(ms, mlen);
|
||||
goto done;
|
||||
}
|
||||
|
||||
*type = "text";
|
||||
if (looks_ascii(buf, nbytes, *ubuf, ulen)) {
|
||||
*code = "ASCII";
|
||||
*code_mime = "us-ascii";
|
||||
} else if (looks_utf8_with_BOM(buf, nbytes, *ubuf, ulen) > 0) {
|
||||
*code = "UTF-8 Unicode (with BOM)";
|
||||
*code_mime = "utf-8";
|
||||
} else if (file_looks_utf8(buf, nbytes, *ubuf, ulen) > 1) {
|
||||
*code = "UTF-8 Unicode";
|
||||
*code_mime = "utf-8";
|
||||
} else if ((ucs_type = looks_ucs16(buf, nbytes, *ubuf, ulen)) != 0) {
|
||||
if (ucs_type == 1) {
|
||||
*code = "Little-endian UTF-16 Unicode";
|
||||
*code_mime = "utf-16le";
|
||||
} else {
|
||||
*code = "Big-endian UTF-16 Unicode";
|
||||
*code_mime = "utf-16be";
|
||||
}
|
||||
} else if (looks_latin1(buf, nbytes, *ubuf, ulen)) {
|
||||
*code = "ISO-8859";
|
||||
*code_mime = "iso-8859-1";
|
||||
} else if (looks_extended(buf, nbytes, *ubuf, ulen)) {
|
||||
*code = "Non-ISO extended-ASCII";
|
||||
*code_mime = "unknown-8bit";
|
||||
} else {
|
||||
from_ebcdic(buf, nbytes, nbuf);
|
||||
|
||||
if (looks_ascii(nbuf, nbytes, *ubuf, ulen)) {
|
||||
*code = "EBCDIC";
|
||||
*code_mime = "ebcdic";
|
||||
} else if (looks_latin1(nbuf, nbytes, *ubuf, ulen)) {
|
||||
*code = "International EBCDIC";
|
||||
*code_mime = "ebcdic";
|
||||
} else { /* Doesn't look like text at all */
|
||||
rv = 0;
|
||||
*type = "binary";
|
||||
}
|
||||
}
|
||||
|
||||
done:
|
||||
if (nbuf)
|
||||
free(nbuf);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
/*
|
||||
* This table reflects a particular philosophy about what constitutes
|
||||
* "text," and there is room for disagreement about it.
|
||||
*
|
||||
* Version 3.31 of the file command considered a file to be ASCII if
|
||||
* each of its characters was approved by either the isascii() or
|
||||
* isalpha() function. On most systems, this would mean that any
|
||||
* file consisting only of characters in the range 0x00 ... 0x7F
|
||||
* would be called ASCII text, but many systems might reasonably
|
||||
* consider some characters outside this range to be alphabetic,
|
||||
* so the file command would call such characters ASCII. It might
|
||||
* have been more accurate to call this "considered textual on the
|
||||
* local system" than "ASCII."
|
||||
*
|
||||
* It considered a file to be "International language text" if each
|
||||
* of its characters was either an ASCII printing character (according
|
||||
* to the real ASCII standard, not the above test), a character in
|
||||
* the range 0x80 ... 0xFF, or one of the following control characters:
|
||||
* backspace, tab, line feed, vertical tab, form feed, carriage return,
|
||||
* escape. No attempt was made to determine the language in which files
|
||||
* of this type were written.
|
||||
*
|
||||
*
|
||||
* The table below considers a file to be ASCII if all of its characters
|
||||
* are either ASCII printing characters (again, according to the X3.4
|
||||
* standard, not isascii()) or any of the following controls: bell,
|
||||
* backspace, tab, line feed, form feed, carriage return, esc, nextline.
|
||||
*
|
||||
* I include bell because some programs (particularly shell scripts)
|
||||
* use it literally, even though it is rare in normal text. I exclude
|
||||
* vertical tab because it never seems to be used in real text. I also
|
||||
* include, with hesitation, the X3.64/ECMA-43 control nextline (0x85),
|
||||
* because that's what the dd EBCDIC->ASCII table maps the EBCDIC newline
|
||||
* character to. It might be more appropriate to include it in the 8859
|
||||
* set instead of the ASCII set, but it's got to be included in *something*
|
||||
* we recognize or EBCDIC files aren't going to be considered textual.
|
||||
* Some old Unix source files use SO/SI (^N/^O) to shift between Greek
|
||||
* and Latin characters, so these should possibly be allowed. But they
|
||||
* make a real mess on VT100-style displays if they're not paired properly,
|
||||
* so we are probably better off not calling them text.
|
||||
*
|
||||
* A file is considered to be ISO-8859 text if its characters are all
|
||||
* either ASCII, according to the above definition, or printing characters
|
||||
* from the ISO-8859 8-bit extension, characters 0xA0 ... 0xFF.
|
||||
*
|
||||
* Finally, a file is considered to be international text from some other
|
||||
* character code if its characters are all either ISO-8859 (according to
|
||||
* the above definition) or characters in the range 0x80 ... 0x9F, which
|
||||
* ISO-8859 considers to be control characters but the IBM PC and Macintosh
|
||||
* consider to be printing characters.
|
||||
*/
|
||||
|
||||
#define F 0 /* character never appears in text */
|
||||
#define T 1 /* character appears in plain ASCII text */
|
||||
#define I 2 /* character appears in ISO-8859 text */
|
||||
#define X 3 /* character appears in non-ISO extended ASCII (Mac, IBM PC) */
|
||||
|
||||
private char text_chars[256] = {
|
||||
/* BEL BS HT LF FF CR */
|
||||
F, F, F, F, F, F, F, T, T, T, T, F, T, T, F, F, /* 0x0X */
|
||||
/* ESC */
|
||||
F, F, F, F, F, F, F, F, F, F, F, T, F, F, F, F, /* 0x1X */
|
||||
T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x2X */
|
||||
T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x3X */
|
||||
T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x4X */
|
||||
T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x5X */
|
||||
T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x6X */
|
||||
T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, F, /* 0x7X */
|
||||
/* NEL */
|
||||
X, X, X, X, X, T, X, X, X, X, X, X, X, X, X, X, /* 0x8X */
|
||||
X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, /* 0x9X */
|
||||
I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xaX */
|
||||
I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xbX */
|
||||
I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xcX */
|
||||
I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xdX */
|
||||
I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xeX */
|
||||
I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I /* 0xfX */
|
||||
};
|
||||
|
||||
private int
|
||||
looks_ascii(const unsigned char *buf, size_t nbytes, unichar *ubuf,
|
||||
size_t *ulen)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
*ulen = 0;
|
||||
|
||||
for (i = 0; i < nbytes; i++) {
|
||||
int t = text_chars[buf[i]];
|
||||
|
||||
if (t != T)
|
||||
return 0;
|
||||
|
||||
ubuf[(*ulen)++] = buf[i];
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
private int
|
||||
looks_latin1(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
*ulen = 0;
|
||||
|
||||
for (i = 0; i < nbytes; i++) {
|
||||
int t = text_chars[buf[i]];
|
||||
|
||||
if (t != T && t != I)
|
||||
return 0;
|
||||
|
||||
ubuf[(*ulen)++] = buf[i];
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
private int
|
||||
looks_extended(const unsigned char *buf, size_t nbytes, unichar *ubuf,
|
||||
size_t *ulen)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
*ulen = 0;
|
||||
|
||||
for (i = 0; i < nbytes; i++) {
|
||||
int t = text_chars[buf[i]];
|
||||
|
||||
if (t != T && t != I && t != X)
|
||||
return 0;
|
||||
|
||||
ubuf[(*ulen)++] = buf[i];
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Decide whether some text looks like UTF-8. Returns:
|
||||
*
|
||||
* -1: invalid UTF-8
|
||||
* 0: uses odd control characters, so doesn't look like text
|
||||
* 1: 7-bit text
|
||||
* 2: definitely UTF-8 text (valid high-bit set bytes)
|
||||
*
|
||||
* If ubuf is non-NULL on entry, text is decoded into ubuf, *ulen;
|
||||
* ubuf must be big enough!
|
||||
*/
|
||||
protected int
|
||||
file_looks_utf8(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen)
|
||||
{
|
||||
size_t i;
|
||||
int n;
|
||||
unichar c;
|
||||
int gotone = 0, ctrl = 0;
|
||||
|
||||
if (ubuf)
|
||||
*ulen = 0;
|
||||
|
||||
for (i = 0; i < nbytes; i++) {
|
||||
if ((buf[i] & 0x80) == 0) { /* 0xxxxxxx is plain ASCII */
|
||||
/*
|
||||
* Even if the whole file is valid UTF-8 sequences,
|
||||
* still reject it if it uses weird control characters.
|
||||
*/
|
||||
|
||||
if (text_chars[buf[i]] != T)
|
||||
ctrl = 1;
|
||||
|
||||
if (ubuf)
|
||||
ubuf[(*ulen)++] = buf[i];
|
||||
} else if ((buf[i] & 0x40) == 0) { /* 10xxxxxx never 1st byte */
|
||||
return -1;
|
||||
} else { /* 11xxxxxx begins UTF-8 */
|
||||
int following;
|
||||
|
||||
if ((buf[i] & 0x20) == 0) { /* 110xxxxx */
|
||||
c = buf[i] & 0x1f;
|
||||
following = 1;
|
||||
} else if ((buf[i] & 0x10) == 0) { /* 1110xxxx */
|
||||
c = buf[i] & 0x0f;
|
||||
following = 2;
|
||||
} else if ((buf[i] & 0x08) == 0) { /* 11110xxx */
|
||||
c = buf[i] & 0x07;
|
||||
following = 3;
|
||||
} else if ((buf[i] & 0x04) == 0) { /* 111110xx */
|
||||
c = buf[i] & 0x03;
|
||||
following = 4;
|
||||
} else if ((buf[i] & 0x02) == 0) { /* 1111110x */
|
||||
c = buf[i] & 0x01;
|
||||
following = 5;
|
||||
} else
|
||||
return -1;
|
||||
|
||||
for (n = 0; n < following; n++) {
|
||||
i++;
|
||||
if (i >= nbytes)
|
||||
goto done;
|
||||
|
||||
if ((buf[i] & 0x80) == 0 || (buf[i] & 0x40))
|
||||
return -1;
|
||||
|
||||
c = (c << 6) + (buf[i] & 0x3f);
|
||||
}
|
||||
|
||||
if (ubuf)
|
||||
ubuf[(*ulen)++] = c;
|
||||
gotone = 1;
|
||||
}
|
||||
}
|
||||
done:
|
||||
return ctrl ? 0 : (gotone ? 2 : 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Decide whether some text looks like UTF-8 with BOM. If there is no
|
||||
* BOM, return -1; otherwise return the result of looks_utf8 on the
|
||||
* rest of the text.
|
||||
*/
|
||||
private int
|
||||
looks_utf8_with_BOM(const unsigned char *buf, size_t nbytes, unichar *ubuf,
|
||||
size_t *ulen)
|
||||
{
|
||||
if (nbytes > 3 && buf[0] == 0xef && buf[1] == 0xbb && buf[2] == 0xbf)
|
||||
return file_looks_utf8(buf + 3, nbytes - 3, ubuf, ulen);
|
||||
else
|
||||
return -1;
|
||||
}
|
||||
|
||||
private int
|
||||
looks_ucs16(const unsigned char *buf, size_t nbytes, unichar *ubuf,
|
||||
size_t *ulen)
|
||||
{
|
||||
int bigend;
|
||||
size_t i;
|
||||
|
||||
if (nbytes < 2)
|
||||
return 0;
|
||||
|
||||
if (buf[0] == 0xff && buf[1] == 0xfe)
|
||||
bigend = 0;
|
||||
else if (buf[0] == 0xfe && buf[1] == 0xff)
|
||||
bigend = 1;
|
||||
else
|
||||
return 0;
|
||||
|
||||
*ulen = 0;
|
||||
|
||||
for (i = 2; i + 1 < nbytes; i += 2) {
|
||||
/* XXX fix to properly handle chars > 65536 */
|
||||
|
||||
if (bigend)
|
||||
ubuf[(*ulen)++] = buf[i + 1] + 256 * buf[i];
|
||||
else
|
||||
ubuf[(*ulen)++] = buf[i] + 256 * buf[i + 1];
|
||||
|
||||
if (ubuf[*ulen - 1] == 0xfffe)
|
||||
return 0;
|
||||
if (ubuf[*ulen - 1] < 128 &&
|
||||
text_chars[(size_t)ubuf[*ulen - 1]] != T)
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1 + bigend;
|
||||
}
|
||||
|
||||
#undef F
|
||||
#undef T
|
||||
#undef I
|
||||
#undef X
|
||||
|
||||
/*
|
||||
* This table maps each EBCDIC character to an (8-bit extended) ASCII
|
||||
* character, as specified in the rationale for the dd(1) command in
|
||||
* draft 11.2 (September, 1991) of the POSIX P1003.2 standard.
|
||||
*
|
||||
* Unfortunately it does not seem to correspond exactly to any of the
|
||||
* five variants of EBCDIC documented in IBM's _Enterprise Systems
|
||||
* Architecture/390: Principles of Operation_, SA22-7201-06, Seventh
|
||||
* Edition, July, 1999, pp. I-1 - I-4.
|
||||
*
|
||||
* Fortunately, though, all versions of EBCDIC, including this one, agree
|
||||
* on most of the printing characters that also appear in (7-bit) ASCII.
|
||||
* Of these, only '|', '!', '~', '^', '[', and ']' are in question at all.
|
||||
*
|
||||
* Fortunately too, there is general agreement that codes 0x00 through
|
||||
* 0x3F represent control characters, 0x41 a nonbreaking space, and the
|
||||
* remainder printing characters.
|
||||
*
|
||||
* This is sufficient to allow us to identify EBCDIC text and to distinguish
|
||||
* between old-style and internationalized examples of text.
|
||||
*/
|
||||
|
||||
private unsigned char ebcdic_to_ascii[] = {
|
||||
0, 1, 2, 3, 156, 9, 134, 127, 151, 141, 142, 11, 12, 13, 14, 15,
|
||||
16, 17, 18, 19, 157, 133, 8, 135, 24, 25, 146, 143, 28, 29, 30, 31,
|
||||
128, 129, 130, 131, 132, 10, 23, 27, 136, 137, 138, 139, 140, 5, 6, 7,
|
||||
144, 145, 22, 147, 148, 149, 150, 4, 152, 153, 154, 155, 20, 21, 158, 26,
|
||||
' ', 160, 161, 162, 163, 164, 165, 166, 167, 168, 213, '.', '<', '(', '+', '|',
|
||||
'&', 169, 170, 171, 172, 173, 174, 175, 176, 177, '!', '$', '*', ')', ';', '~',
|
||||
'-', '/', 178, 179, 180, 181, 182, 183, 184, 185, 203, ',', '%', '_', '>', '?',
|
||||
186, 187, 188, 189, 190, 191, 192, 193, 194, '`', ':', '#', '@', '\'','=', '"',
|
||||
195, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 196, 197, 198, 199, 200, 201,
|
||||
202, 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', '^', 204, 205, 206, 207, 208,
|
||||
209, 229, 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 210, 211, 212, '[', 214, 215,
|
||||
216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, ']', 230, 231,
|
||||
'{', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 232, 233, 234, 235, 236, 237,
|
||||
'}', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 238, 239, 240, 241, 242, 243,
|
||||
'\\',159, 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 244, 245, 246, 247, 248, 249,
|
||||
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 250, 251, 252, 253, 254, 255
|
||||
};
|
||||
|
||||
#ifdef notdef
|
||||
/*
|
||||
* The following EBCDIC-to-ASCII table may relate more closely to reality,
|
||||
* or at least to modern reality. It comes from
|
||||
*
|
||||
* http://ftp.s390.ibm.com/products/oe/bpxqp9.html
|
||||
*
|
||||
* and maps the characters of EBCDIC code page 1047 (the code used for
|
||||
* Unix-derived software on IBM's 390 systems) to the corresponding
|
||||
* characters from ISO 8859-1.
|
||||
*
|
||||
* If this table is used instead of the above one, some of the special
|
||||
* cases for the NEL character can be taken out of the code.
|
||||
*/
|
||||
|
||||
private unsigned char ebcdic_1047_to_8859[] = {
|
||||
0x00,0x01,0x02,0x03,0x9C,0x09,0x86,0x7F,0x97,0x8D,0x8E,0x0B,0x0C,0x0D,0x0E,0x0F,
|
||||
0x10,0x11,0x12,0x13,0x9D,0x0A,0x08,0x87,0x18,0x19,0x92,0x8F,0x1C,0x1D,0x1E,0x1F,
|
||||
0x80,0x81,0x82,0x83,0x84,0x85,0x17,0x1B,0x88,0x89,0x8A,0x8B,0x8C,0x05,0x06,0x07,
|
||||
0x90,0x91,0x16,0x93,0x94,0x95,0x96,0x04,0x98,0x99,0x9A,0x9B,0x14,0x15,0x9E,0x1A,
|
||||
0x20,0xA0,0xE2,0xE4,0xE0,0xE1,0xE3,0xE5,0xE7,0xF1,0xA2,0x2E,0x3C,0x28,0x2B,0x7C,
|
||||
0x26,0xE9,0xEA,0xEB,0xE8,0xED,0xEE,0xEF,0xEC,0xDF,0x21,0x24,0x2A,0x29,0x3B,0x5E,
|
||||
0x2D,0x2F,0xC2,0xC4,0xC0,0xC1,0xC3,0xC5,0xC7,0xD1,0xA6,0x2C,0x25,0x5F,0x3E,0x3F,
|
||||
0xF8,0xC9,0xCA,0xCB,0xC8,0xCD,0xCE,0xCF,0xCC,0x60,0x3A,0x23,0x40,0x27,0x3D,0x22,
|
||||
0xD8,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0xAB,0xBB,0xF0,0xFD,0xFE,0xB1,
|
||||
0xB0,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0xAA,0xBA,0xE6,0xB8,0xC6,0xA4,
|
||||
0xB5,0x7E,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0xA1,0xBF,0xD0,0x5B,0xDE,0xAE,
|
||||
0xAC,0xA3,0xA5,0xB7,0xA9,0xA7,0xB6,0xBC,0xBD,0xBE,0xDD,0xA8,0xAF,0x5D,0xB4,0xD7,
|
||||
0x7B,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0xAD,0xF4,0xF6,0xF2,0xF3,0xF5,
|
||||
0x7D,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0xB9,0xFB,0xFC,0xF9,0xFA,0xFF,
|
||||
0x5C,0xF7,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0xB2,0xD4,0xD6,0xD2,0xD3,0xD5,
|
||||
0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0xB3,0xDB,0xDC,0xD9,0xDA,0x9F
|
||||
};
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Copy buf[0 ... nbytes-1] into out[], translating EBCDIC to ASCII.
|
||||
*/
|
||||
private void
|
||||
from_ebcdic(const unsigned char *buf, size_t nbytes, unsigned char *out)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
for (i = 0; i < nbytes; i++) {
|
||||
out[i] = ebcdic_to_ascii[buf[i]];
|
||||
}
|
||||
}
|
||||
256
readcdf.c
Normal file
256
readcdf.c
Normal file
@ -0,0 +1,256 @@
|
||||
/*-
|
||||
* Copyright (c) 2008 Christos Zoulas
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
#include "file.h"
|
||||
|
||||
#ifndef lint
|
||||
FILE_RCSID("@(#)$File: readcdf.c,v 1.11 2009/02/03 20:27:51 christos Exp $")
|
||||
#endif
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <ctype.h>
|
||||
|
||||
#include "cdf.h"
|
||||
#include "magic.h"
|
||||
|
||||
#define NOTMIME(ms) (((ms)->flags & MAGIC_MIME) == 0)
|
||||
|
||||
private int
|
||||
cdf_file_property_info(struct magic_set *ms, const cdf_property_info_t *info,
|
||||
size_t count)
|
||||
{
|
||||
size_t i;
|
||||
cdf_timestamp_t tp;
|
||||
struct timespec ts;
|
||||
char buf[64];
|
||||
const char *str = "vnd.ms-office";
|
||||
const char *s;
|
||||
int len;
|
||||
|
||||
for (i = 0; i < count; i++) {
|
||||
cdf_print_property_name(buf, sizeof(buf), info[i].pi_id);
|
||||
switch (info[i].pi_type) {
|
||||
case CDF_SIGNED16:
|
||||
if (NOTMIME(ms) && file_printf(ms, ", %s: %hd", buf,
|
||||
info[i].pi_s16) == -1)
|
||||
return -1;
|
||||
break;
|
||||
case CDF_SIGNED32:
|
||||
if (NOTMIME(ms) && file_printf(ms, ", %s: %d", buf,
|
||||
info[i].pi_s32) == -1)
|
||||
return -1;
|
||||
break;
|
||||
case CDF_UNSIGNED32:
|
||||
if (NOTMIME(ms) && file_printf(ms, ", %s: %u", buf,
|
||||
info[i].pi_u32) == -1)
|
||||
return -1;
|
||||
break;
|
||||
case CDF_LENGTH32_STRING:
|
||||
len = info[i].pi_str.s_len;
|
||||
if (len > 1) {
|
||||
s = info[i].pi_str.s_buf;
|
||||
if (NOTMIME(ms)) {
|
||||
if (file_printf(ms, ", %s: %.*s", buf,
|
||||
len, s) == -1)
|
||||
return -1;
|
||||
} else if (info[i].pi_id ==
|
||||
CDF_PROPERTY_NAME_OF_APPLICATION) {
|
||||
if (strstr(s, "Word"))
|
||||
str = "msword";
|
||||
else if (strstr(s, "Excel"))
|
||||
str = "vnd.ms-excel";
|
||||
else if (strstr(s, "Powerpoint"))
|
||||
str = "vnd.ms-powerpoint";
|
||||
}
|
||||
}
|
||||
break;
|
||||
case CDF_FILETIME:
|
||||
tp = info[i].pi_tp;
|
||||
if (tp != 0) {
|
||||
if (tp < 1000000000000000LL) {
|
||||
char tbuf[64];
|
||||
cdf_print_elapsed_time(tbuf,
|
||||
sizeof(tbuf), tp);
|
||||
if (NOTMIME(ms) && file_printf(ms,
|
||||
", %s: %s", buf, tbuf) == -1)
|
||||
return -1;
|
||||
} else {
|
||||
char *c, *ec;
|
||||
cdf_timestamp_to_timespec(&ts, tp);
|
||||
c = ctime(&ts.tv_sec);
|
||||
if ((ec = strchr(c, '\n')) != NULL)
|
||||
*ec = '\0';
|
||||
|
||||
if (NOTMIME(ms) && file_printf(ms,
|
||||
", %s: %s", buf, c) == -1)
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case CDF_CLIPBOARD:
|
||||
break;
|
||||
default:
|
||||
file_error(ms, 0, "Internal parsing error");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
if (!NOTMIME(ms)) {
|
||||
if (file_printf(ms, "application/%s", str) == -1)
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
private int
|
||||
cdf_file_summary_info(struct magic_set *ms, const cdf_stream_t *sst)
|
||||
{
|
||||
cdf_summary_info_header_t si;
|
||||
cdf_property_info_t *info;
|
||||
size_t count;
|
||||
int m;
|
||||
|
||||
if (cdf_unpack_summary_info(sst, &si, &info, &count) == -1) {
|
||||
if (si.si_byte_order != 0xfffe)
|
||||
return 0;
|
||||
else
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (si.si_byte_order != 0xfffe)
|
||||
return 0;
|
||||
|
||||
if (NOTMIME(ms)) {
|
||||
if (file_printf(ms, "CDF V2 Document") == -1)
|
||||
return -1;
|
||||
|
||||
if (file_printf(ms, ", %s Endian",
|
||||
si.si_byte_order == 0xfffe ? "Little" : "Big") == -1)
|
||||
return -1;
|
||||
switch (si.si_os) {
|
||||
case 2:
|
||||
if (file_printf(ms, ", Os: Windows, Version %d.%d",
|
||||
si.si_os_version & 0xff, si.si_os_version >> 8)
|
||||
== -1)
|
||||
return -1;
|
||||
break;
|
||||
case 1:
|
||||
if (file_printf(ms, ", Os: MacOS, Version %d.%d",
|
||||
si.si_os_version >> 8, si.si_os_version & 0xff)
|
||||
== -1)
|
||||
return -1;
|
||||
break;
|
||||
default:
|
||||
if (file_printf(ms, ", Os %d, Version: %d.%d", si.si_os,
|
||||
si.si_os_version & 0xff, si.si_os_version >> 8)
|
||||
== -1)
|
||||
return -1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
m = cdf_file_property_info(ms, info, count);
|
||||
free(info);
|
||||
|
||||
return m;
|
||||
}
|
||||
|
||||
protected int
|
||||
file_trycdf(struct magic_set *ms, int fd, const unsigned char *buf,
|
||||
size_t nbytes)
|
||||
{
|
||||
cdf_header_t h;
|
||||
cdf_sat_t sat, ssat;
|
||||
cdf_stream_t sst, scn;
|
||||
cdf_dir_t dir;
|
||||
int i;
|
||||
(void)&nbytes;
|
||||
(void)&buf;
|
||||
|
||||
if (ms->flags & MAGIC_APPLE)
|
||||
return 0;
|
||||
if (cdf_read_header(fd, &h) == -1)
|
||||
return 0;
|
||||
#ifdef CDF_DEBUG
|
||||
cdf_dump_header(&h);
|
||||
#endif
|
||||
|
||||
if (cdf_read_sat(fd, &h, &sat) == -1) {
|
||||
file_error(ms, errno, "Can't read SAT");
|
||||
return -1;
|
||||
}
|
||||
#ifdef CDF_DEBUG
|
||||
cdf_dump_sat("SAT", &h, &sat);
|
||||
#endif
|
||||
|
||||
if ((i = cdf_read_ssat(fd, &h, &sat, &ssat)) == -1) {
|
||||
file_error(ms, errno, "Can't read SAT");
|
||||
goto out1;
|
||||
}
|
||||
#ifdef CDF_DEBUG
|
||||
cdf_dump_sat("SSAT", &h, &ssat);
|
||||
#endif
|
||||
|
||||
if ((i = cdf_read_dir(fd, &h, &sat, &dir)) == -1) {
|
||||
file_error(ms, errno, "Can't read directory");
|
||||
goto out2;
|
||||
}
|
||||
|
||||
if ((i = cdf_read_short_stream(fd, &h, &sat, &dir, &sst)) == -1) {
|
||||
file_error(ms, errno, "Cannot read short stream");
|
||||
goto out3;
|
||||
}
|
||||
|
||||
#ifdef CDF_DEBUG
|
||||
cdf_dump_dir(fd, &h, &sat, &ssat, &sst, &dir);
|
||||
#endif
|
||||
if ((i = cdf_read_summary_info(fd, &h, &sat, &ssat, &sst, &dir, &scn))
|
||||
== -1) {
|
||||
/* Some files don't have summary info! */
|
||||
#ifdef notyet
|
||||
file_error(ms, errno, "Can't read summary_info");
|
||||
#else
|
||||
i = 0;
|
||||
#endif
|
||||
goto out4;
|
||||
}
|
||||
#ifdef CDF_DEBUG
|
||||
cdf_dump_summary_info(&h, &scn);
|
||||
#endif
|
||||
if ((i = cdf_file_summary_info(ms, &scn)) == -1)
|
||||
file_error(ms, errno, "Can't expand summary_info");
|
||||
free(scn.sst_tab);
|
||||
out4:
|
||||
free(sst.sst_tab);
|
||||
out3:
|
||||
free(dir.dir_tab);
|
||||
out2:
|
||||
free(ssat.sat_tab);
|
||||
out1:
|
||||
free(sat.sat_tab);
|
||||
return i;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user