commit 1cb89d0393bac19f3b9e409ba46d1fd4136ff332
parent ad9dc67eb7331616c4bbe6229576495a25741928
Author: Christian Grothoff <christian@grothoff.org>
Date: Sat, 1 May 2021 22:59:59 +0200
revive ELF plugin
Diffstat:
9 files changed, 915 insertions(+), 912 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -1,8 +1,4 @@
-On branch master
-Your branch is up-to-date with 'origin/master'.
-Untracked files:
- (use "git add <file>..." to include in what will be committed)
-
+**/*~
INSTALL
Makefile
Makefile.in
@@ -72,290 +68,60 @@ src/main/extract.o
src/main/getopt.o
src/main/getopt1.o
src/main/libextractor.la
-src/main/libextractor_la-extractor.lo
-src/main/libextractor_la-extractor.o
-src/main/libextractor_la-extractor_common.lo
-src/main/libextractor_la-extractor_common.o
-src/main/libextractor_la-extractor_datasource.lo
-src/main/libextractor_la-extractor_datasource.o
-src/main/libextractor_la-extractor_ipc.lo
-src/main/libextractor_la-extractor_ipc.o
-src/main/libextractor_la-extractor_ipc_gnu.lo
-src/main/libextractor_la-extractor_ipc_gnu.o
-src/main/libextractor_la-extractor_logging.lo
-src/main/libextractor_la-extractor_logging.o
-src/main/libextractor_la-extractor_metatypes.lo
-src/main/libextractor_la-extractor_metatypes.o
-src/main/libextractor_la-extractor_plugin_main.lo
-src/main/libextractor_la-extractor_plugin_main.o
-src/main/libextractor_la-extractor_plugins.lo
-src/main/libextractor_la-extractor_plugins.o
-src/main/libextractor_la-extractor_plugpath.lo
-src/main/libextractor_la-extractor_plugpath.o
-src/main/libextractor_la-extractor_print.lo
-src/main/libextractor_la-extractor_print.o
-src/main/libextractor_test.la
-src/main/libextractor_test2.la
-src/main/test-suite.log
-src/main/test2_extractor.lo
-src/main/test2_extractor.o
+src/main/*.o
+src/main/*.lo
+src/main/*.la
+src/main/*.trs
+src/main/*.log
src/main/test_bzip2
-src/main/test_bzip2.log
-src/main/test_bzip2.o
-src/main/test_bzip2.trs
-src/main/test_extractor.lo
-src/main/test_extractor.o
src/main/test_file
-src/main/test_file.log
-src/main/test_file.o
-src/main/test_file.trs
src/main/test_gzip
-src/main/test_gzip.log
-src/main/test_gzip.o
-src/main/test_gzip.trs
src/main/test_ipc
-src/main/test_ipc.log
-src/main/test_ipc.o
-src/main/test_ipc.trs
src/main/test_plugin_load_multi
-src/main/test_plugin_load_multi.log
-src/main/test_plugin_load_multi.o
-src/main/test_plugin_load_multi.trs
src/main/test_plugin_loading
-src/main/test_plugin_loading.log
-src/main/test_plugin_loading.o
-src/main/test_plugin_loading.trs
src/main/test_trivial
-src/main/test_trivial.log
-src/main/test_trivial.o
-src/main/test_trivial.trs
src/plugins/.deps/
src/plugins/.libs/
src/plugins/Makefile
src/plugins/Makefile.in
-src/plugins/archive_extractor.lo
-src/plugins/archive_extractor.o
-src/plugins/deb_extractor.lo
-src/plugins/deb_extractor.o
-src/plugins/dvi_extractor.lo
-src/plugins/dvi_extractor.o
-src/plugins/exiv2_extractor.lo
-src/plugins/exiv2_extractor.o
-src/plugins/flac_extractor.lo
-src/plugins/flac_extractor.o
-src/plugins/gif_extractor.lo
-src/plugins/gif_extractor.o
-src/plugins/html_extractor.lo
-src/plugins/html_extractor.o
-src/plugins/it_extractor.lo
-src/plugins/it_extractor.o
-src/plugins/jpeg_extractor.lo
-src/plugins/jpeg_extractor.o
-src/plugins/thumbnailffmpeg_extractor.lo
-src/plugins/thumbnailffmpeg_extractor.o
-src/plugins/libextractor_archive.la
-src/plugins/libextractor_deb.la
-src/plugins/libextractor_dvi.la
-src/plugins/libextractor_exiv2.la
-src/plugins/libextractor_flac.la
-src/plugins/libextractor_gif.la
-src/plugins/libextractor_gstreamer.la
-src/plugins/libextractor_thumbnailffmpeg.la
-src/plugins/libextractor_gstreamer_la-gstreamer_extractor.lo
-src/plugins/libextractor_gstreamer_la-gstreamer_extractor.o
-src/plugins/libextractor_html.la
-src/plugins/libextractor_it.la
-src/plugins/libextractor_jpeg.la
-src/plugins/libextractor_man.la
-src/plugins/libextractor_midi.la
-src/plugins/libextractor_midi_la-midi_extractor.lo
-src/plugins/libextractor_midi_la-midi_extractor.o
-src/plugins/libextractor_mime.la
-src/plugins/libextractor_mpeg.la
-src/plugins/libextractor_nsf.la
-src/plugins/libextractor_nsfe.la
-src/plugins/libextractor_odf.la
-src/plugins/libextractor_ogg.la
-src/plugins/libextractor_ole2.la
-src/plugins/libextractor_ole2_la-ole2_extractor.lo
-src/plugins/libextractor_ole2_la-ole2_extractor.o
-src/plugins/libextractor_pdf.la
-src/plugins/libextractor_png.la
-src/plugins/libextractor_ps.la
-src/plugins/libextractor_riff.la
-src/plugins/libextractor_rpm.la
-src/plugins/libextractor_s3m.la
-src/plugins/libextractor_sid.la
-src/plugins/libextractor_thumbnailgtk.la
-src/plugins/libextractor_thumbnailgtk_la-thumbnailgtk_extractor.lo
-src/plugins/libextractor_thumbnailgtk_la-thumbnailgtk_extractor.o
-src/plugins/libextractor_tiff.la
-src/plugins/libextractor_wav.la
-src/plugins/libextractor_xm.la
-src/plugins/libextractor_zip.la
-src/plugins/libtest.la
-src/plugins/man_extractor.lo
-src/plugins/man_extractor.o
-src/plugins/mime_extractor.lo
-src/plugins/mime_extractor.o
-src/plugins/mpeg_extractor.lo
-src/plugins/mpeg_extractor.o
-src/plugins/nsf_extractor.lo
-src/plugins/nsf_extractor.o
-src/plugins/nsfe_extractor.lo
-src/plugins/nsfe_extractor.o
-src/plugins/odf_extractor.lo
-src/plugins/odf_extractor.o
-src/plugins/ogg_extractor.lo
-src/plugins/ogg_extractor.o
-src/plugins/pdf_extractor.lo
-src/plugins/pdf_extractor.o
-src/plugins/png_extractor.lo
-src/plugins/png_extractor.o
-src/plugins/ps_extractor.lo
-src/plugins/ps_extractor.o
-src/plugins/riff_extractor.lo
-src/plugins/riff_extractor.o
-src/plugins/rpm_extractor.lo
-src/plugins/rpm_extractor.o
-src/plugins/s3m_extractor.lo
-src/plugins/s3m_extractor.o
-src/plugins/sid_extractor.lo
-src/plugins/sid_extractor.o
+src/plugins/*.o
+src/plugins/*.lo
+src/plugins/*.la
+src/plugins/*.log
+src/plugins/*.trs
src/plugins/test-suite.log
src/plugins/test_archive
-src/plugins/test_archive.log
-src/plugins/test_archive.o
-src/plugins/test_archive.trs
src/plugins/test_deb
-src/plugins/test_deb.log
-src/plugins/test_deb.o
-src/plugins/test_deb.trs
src/plugins/test_dvi
-src/plugins/test_dvi.log
-src/plugins/test_dvi.o
-src/plugins/test_dvi.trs
+src/plugins/test_elf
src/plugins/test_exiv2
-src/plugins/test_exiv2.log
-src/plugins/test_exiv2.o
-src/plugins/test_exiv2.trs
src/plugins/test_flac
-src/plugins/test_flac.log
-src/plugins/test_flac.o
-src/plugins/test_flac.trs
src/plugins/test_gif
-src/plugins/test_gif.log
-src/plugins/test_gif.o
-src/plugins/test_gif.trs
src/plugins/test_gstreamer
-src/plugins/test_gstreamer-test_gstreamer.o
-src/plugins/test_gstreamer.log
-src/plugins/test_gstreamer.trs
src/plugins/test_html
-src/plugins/test_html.log
-src/plugins/test_html.o
-src/plugins/test_html.trs
src/plugins/test_it
-src/plugins/test_it.log
-src/plugins/test_it.o
-src/plugins/test_it.trs
src/plugins/test_jpeg
-src/plugins/test_jpeg.log
-src/plugins/test_jpeg.o
-src/plugins/test_jpeg.trs
-src/plugins/test_lib.lo
-src/plugins/test_lib.o
src/plugins/test_man
-src/plugins/test_man.log
-src/plugins/test_man.o
-src/plugins/test_man.trs
src/plugins/test_midi
-src/plugins/test_midi.log
-src/plugins/test_midi.o
-src/plugins/test_midi.trs
src/plugins/test_mime
-src/plugins/test_mime.log
-src/plugins/test_mime.o
-src/plugins/test_mime.trs
src/plugins/test_mpeg
-src/plugins/test_mpeg.log
-src/plugins/test_mpeg.o
-src/plugins/test_mpeg.trs
src/plugins/test_nsf
-src/plugins/test_nsf.log
-src/plugins/test_nsf.o
-src/plugins/test_nsf.trs
src/plugins/test_nsfe
-src/plugins/test_nsfe.log
-src/plugins/test_nsfe.o
-src/plugins/test_nsfe.trs
src/plugins/test_odf
-src/plugins/test_odf.log
-src/plugins/test_odf.o
-src/plugins/test_odf.trs
src/plugins/test_ogg
-src/plugins/test_ogg.log
-src/plugins/test_ogg.o
-src/plugins/test_ogg.trs
src/plugins/test_ole2
-src/plugins/test_ole2.log
-src/plugins/test_ole2.o
-src/plugins/test_ole2.trs
src/plugins/test_png
-src/plugins/test_png.log
-src/plugins/test_png.o
-src/plugins/test_png.trs
src/plugins/test_ps
-src/plugins/test_ps.log
-src/plugins/test_ps.o
-src/plugins/test_ps.trs
src/plugins/test_riff
-src/plugins/test_riff.log
-src/plugins/test_riff.o
-src/plugins/test_riff.trs
src/plugins/test_rpm
-src/plugins/test_rpm.log
-src/plugins/test_rpm.o
-src/plugins/test_rpm.trs
src/plugins/test_s3m
-src/plugins/test_s3m.log
-src/plugins/test_s3m.o
-src/plugins/test_s3m.trs
src/plugins/test_sid
-src/plugins/test_sid.log
-src/plugins/test_sid.o
-src/plugins/test_sid.trs
src/plugins/test_thumbnailgtk
-src/plugins/test_thumbnailgtk.log
-src/plugins/test_thumbnailgtk.o
-src/plugins/test_thumbnailgtk.trs
src/plugins/test_tiff
-src/plugins/test_tiff.log
-src/plugins/test_tiff.o
-src/plugins/test_tiff.trs
src/plugins/test_wav
-src/plugins/test_wav.log
-src/plugins/test_wav.o
-src/plugins/test_wav.trs
src/plugins/test_xm
-src/plugins/test_xm.log
-src/plugins/test_xm.o
-src/plugins/test_xm.trs
src/plugins/test_zip
-src/plugins/test_zip.log
-src/plugins/test_zip.o
-src/plugins/test_zip.trs
-src/plugins/tiff_extractor.lo
-src/plugins/tiff_extractor.o
-src/plugins/wav_extractor.lo
-src/plugins/wav_extractor.o
-src/plugins/xm_extractor.lo
-src/plugins/xm_extractor.o
-src/plugins/zip_extractor.lo
-src/plugins/zip_extractor.o
stamp-h1
test-driver
-
-nothing added to commit but untracked files present (use "git add" to track)
src/plugins/test_thumbnailffmpeg
build-aux/
diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,6 @@
+Sat 01 May 2021 10:57:55 PM CEST
+ Revive ELF plugin (fixes #2516). -CG
+
Tue 20 Apr 2021 06:33:46 PM CEST
Removing plugins depending on buggy, unstable libffmpeg library. -CG
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
@@ -165,6 +165,7 @@ endif
plugin_LTLIBRARIES = \
libextractor_dvi.la \
+ libextractor_elf.la \
libextractor_it.la \
libextractor_man.la \
libextractor_nsf.la \
@@ -200,6 +201,7 @@ endif
check_PROGRAMS = \
test_dvi \
+ test_elf \
test_it \
test_man \
test_nsf \
@@ -283,6 +285,19 @@ test_dvi_SOURCES = \
test_dvi_LDADD = \
$(top_builddir)/src/plugins/libtest.la
+libextractor_elf_la_SOURCES = \
+ elf_extractor.c \
+ pack.c pack.h
+libextractor_elf_la_LDFLAGS = \
+ $(PLUGINFLAGS)
+libextractor_elf_la_LIBADD = \
+ $(XLIB) $(SOCKET_LIBS)
+
+test_elf_SOURCES = \
+ test_elf.c
+test_elf_LDADD = \
+ $(top_builddir)/src/plugins/libtest.la
+
libextractor_exiv2_la_SOURCES = \
exiv2_extractor.cc
diff --git a/src/plugins/elf_extractor.c b/src/plugins/elf_extractor.c
@@ -0,0 +1,802 @@
+/*
+ This file is part of libextractor.
+ Copyright (C) 2012 Vidyut Samanta and Christian Grothoff
+
+ libextractor is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ libextractor is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with libextractor; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+ */
+/**
+ * @file plugins/gif_extractor.c
+ * @brief plugin to support GIF files
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "extractor.h"
+#include "pack.h"
+#include <stdint.h>
+
+
+typedef uint32_t Elf32_Addr;
+typedef uint16_t Elf32_Half;
+typedef uint32_t Elf32_Off;
+typedef int32_t Elf32_Sword;
+typedef uint32_t Elf32_Word;
+
+typedef uint16_t Elf64_Half;
+typedef uint32_t Elf64_Word;
+typedef uint64_t Elf64_Addr;
+typedef uint64_t Elf64_Off;
+
+/* first 4 bytes of the ELF header */
+static char elfMagic[] = { 0x7f, 'E', 'L', 'F' };
+
+#define EI_CLASS 4
+#define EI_DATA 5
+#define EI_VERSION 6
+#define EI_OSABI 7
+#define EI_NIDENT 16
+
+typedef struct
+{
+ Elf32_Half e_type;
+ Elf32_Half e_machine;
+ Elf32_Word e_version;
+ Elf32_Addr e_entry;
+ Elf32_Off e_phoff;
+ Elf32_Off e_shoff; /* offset of the section header table */
+ Elf32_Word e_flags;
+ Elf32_Half e_ehsize;
+ Elf32_Half e_phensize;
+ Elf32_Half e_phnum;
+ Elf32_Half e_shentsize; /* size of each entry in SH table */
+ Elf32_Half e_shnum; /* how many entries in section header table */
+ Elf32_Half e_shstrndx; /* section header's sh_name member is index into this string table! */
+} Elf32_Ehdr;
+
+/* elf-header minus e_ident */
+#define ELF_HEADER_SIZE sizeof (Elf32_Ehdr)
+
+#define ELF_HEADER_FIELDS(p) \
+ & (p)->e_type, \
+ &(p)->e_machine, \
+ &(p)->e_version, \
+ &(p)->e_entry, \
+ &(p)->e_phoff, \
+ &(p)->e_shoff, \
+ &(p)->e_flags, \
+ &(p)->e_ehsize, \
+ &(p)->e_phensize, \
+ &(p)->e_phnum, \
+ &(p)->e_shentsize, \
+ &(p)->e_shnum, \
+ &(p)->e_shstrndx
+static char *ELF_HEADER_SPECS[] = {
+ "hhwwwwwhhhhhh",
+ "HHWWWWWHHHHHH",
+};
+
+typedef struct
+{
+ Elf64_Half e_type;
+ Elf64_Half e_machine;
+ Elf64_Word e_version;
+ Elf64_Addr e_entry;
+ Elf64_Off e_phoff;
+ Elf64_Off e_shoff;
+ Elf64_Word e_flags;
+ Elf64_Half e_ehsize;
+ Elf64_Half e_phensize;
+ Elf64_Half e_phnum;
+ Elf64_Half e_shentsize;
+ Elf64_Half e_shnum;
+ Elf64_Half e_shstrndx;
+} Elf64_Ehdr;
+
+/* elf-header minus e_ident */
+#define ELF64_HEADER_SIZE sizeof (Elf64_Ehdr)
+
+#define ELF64_HEADER_FIELDS(p) \
+ & (p)->e_type, \
+ &(p)->e_machine, \
+ &(p)->e_version, \
+ &(p)->e_entry, \
+ &(p)->e_phoff, \
+ &(p)->e_shoff, \
+ &(p)->e_flags, \
+ &(p)->e_ehsize, \
+ &(p)->e_phensize, \
+ &(p)->e_phnum, \
+ &(p)->e_shentsize, \
+ &(p)->e_shnum, \
+ &(p)->e_shstrndx
+static char *ELF64_HEADER_SPECS[] = {
+ "hhwxxxwhhhhhh",
+ "HHWXXXWHHHHHH",
+};
+
+
+typedef struct
+{
+ Elf32_Word sh_name;
+ Elf32_Word sh_type;
+ Elf32_Word sh_flags;
+ Elf32_Addr sh_addr; /* where loaded */
+ Elf32_Off sh_offset; /* where in image (! sh_type==SHT_NOBITS) */
+ Elf32_Word sh_size; /* section size in bytes */
+ Elf32_Word sh_link; /* for symbol table: section header index of the associated string table! */
+ Elf32_Word sh_info; /* "one greater than the symbol table index of the last local symbol _STB_LOCAL_" */
+ Elf32_Word sh_addralign;
+ Elf32_Word sh_entsize;
+} Elf32_Shdr;
+#define ELF_SECTION_SIZE 40
+
+#define ELF_SECTION_FIELDS(p) \
+ & (p)->sh_name, \
+ &(p)->sh_type, \
+ &(p)->sh_flags, \
+ &(p)->sh_addr, \
+ &(p)->sh_offset, \
+ &(p)->sh_size, \
+ &(p)->sh_link, \
+ &(p)->sh_info, \
+ &(p)->sh_addralign, \
+ &(p)->sh_entsize
+static char *ELF_SECTION_SPECS[] = {
+ "wwwwwwwwww",
+ "WWWWWWWWWW",
+};
+
+typedef struct
+{
+ Elf32_Word p_type;
+ Elf32_Off p_offset;
+ Elf32_Addr p_vaddr;
+ Elf32_Addr p_paddr;
+ Elf32_Word p_filesz;
+ Elf32_Word p_memsz;
+ Elf32_Word p_flags;
+ Elf32_Word p_align;
+} Elf32_Phdr;
+#define ELF_PDHR_SIZE 32
+#define ELF_PHDR_FIELDS(p) \
+ & (p)->p_type, \
+ &(p)->p_offset, \
+ &(p)->p_vaddr, \
+ &(p)->p_paddr, \
+ &(p)->p_filesz, \
+ &(p)->p_memsz, \
+ &(p)->p_flags, \
+ &(p)->p_align
+static char *ELF_PHDR_SPECS[] = {
+ "wwwwwwww",
+ "WWWWWWWW",
+};
+
+typedef struct
+{
+ Elf32_Sword d_tag;
+ union
+ {
+ Elf32_Word d_val;
+ Elf32_Addr d_ptr;
+ } d_un;
+} Elf32_Dyn;
+#define ELF_DYN_SIZE 8
+#define ELF_DYN_FIELDS(p) \
+ & (p)->d_tag, \
+ &(p)->d_un
+static char *ELF_DYN_SPECS[] = {
+ "ww",
+ "WW",
+};
+
+#define ET_NONE 0
+#define ET_REL 1
+#define ET_EXEC 2
+#define ET_DYN 3
+#define ET_CORE 4
+#define ET_LOPROC 0xff00
+#define ET_HIPROC 0xffff
+
+#define EM_NONE 0
+#define EM_M32 1
+#define EM_SPARC 2
+#define EM_386 3
+#define EM_68K 4
+#define EM_88K 5
+#define EM_860 7
+#define EM_MIPS 8
+#define EM_PPC 20
+#define EM_PPC64 21
+#define EM_S390 22
+#define EM_ARM 40
+#define EM_ALPHA 41
+#define EM_IA_64 50
+#define EM_X86_64 62
+#define EM_CUDA 190
+
+#define ELFOSABI_NETBSD 2
+#define ELFOSABI_LINUX 3
+#define ELFOSABI_IRIX 8
+#define ELFOSABI_FREEBSD 9
+#define ELFOSABI_OPENBSD 12
+
+#define EV_NONE 0
+#define EV_CURRENT 1
+
+#define SHT_NULL 0
+#define SHT_PROGBITS 1
+#define SHT_SYMTAB 2
+/* string table! */
+#define SHT_STRTAB 3
+#define SHT_RELA 4
+#define SHT_HASH 5
+/* dynamic linking info! */
+#define SHT_DYNAMIC 6
+#define SHT_NOTE 7
+#define SHT_NOBITS 8
+#define SHT_REL 9
+#define SHT_SHLIB 10
+#define SHT_DYNSYM 11
+#define SHT_LOPROC 0x70000000
+#define SHT_HIPROC 0x7fffffff
+#define SHT_LOUSER 0x80000000
+#define SHT_HIUSER 0xffffffff
+
+#define SHF_WRITE 0x1
+#define SHF_ALLOC 0x2
+#define SHF_EXECINSTR 0x4
+#define SHF_MASKPROC 0xf000000
+
+#define DT_NULL 0
+/* name of a needed library, offset into table
+ recorded in DT_STRTAB entry */
+#define DT_NEEDED 1
+#define DT_PLTRELSZ 2
+#define DT_PLTGOT 3
+#define DT_HASH 4
+/* address of the string table from where symbol
+ names, library names, etc for this DT come from */
+#define DT_STRTAB 5
+#define DT_SYMTAB 6
+#define DT_SYMENT 7
+#define DT_RELA 7
+#define DT_RELASZ 8
+#define DT_RELAENT 9
+/* size of the string-table in bytes */
+#define DT_STRSZ 10
+/* fixme 11 */
+#define DT_INIT 12
+#define DT_FINI 13
+/* string-table offset giving the name of the shared object */
+#define DT_SONAME 14
+/* string-table offset of a null-terminated library search path */
+#define DT_RPATH 15
+#define DT_SYMBOLIC 16
+
+
+#define PT_NULL 0
+#define PT_LOAD 1
+#define PT_DYNAMIC 2
+#define PT_INTERP 3
+#define PT_NOTE 4
+#define PT_SHLIB 5
+#define PT_PHDR 6
+#define PT_LOPROC 0x70000000
+#define PT_HIPROC 0x7fffffff
+
+
+#define ELFCLASSNONE 0
+#define ELFCLASS32 1
+#define ELFCLASS64 2
+
+#define ELFDATANONE 0
+/* little endian */
+#define ELFDATA2LSB 1
+/* big endian */
+#define ELFDATA2MSB 2
+
+/**
+ * @param ei_data ELFDATA2LSB or ELFDATA2MSB
+ * @return 1 if we need to convert, 0 if not
+ */
+static int
+getByteorder (char ei_data)
+{
+ if (ei_data == ELFDATA2LSB)
+ {
+#if __BYTE_ORDER == __BIG_ENDIAN
+ return 1;
+#else
+ return 0;
+#endif
+ }
+ else
+ {
+#if __BYTE_ORDER == __BIG_ENDIAN
+ return 0;
+#else
+ return 1;
+#endif
+ }
+}
+
+
+/**
+ *
+ * @return 0 on success, -1 on error
+ */
+static int
+getSectionHdr (struct EXTRACTOR_ExtractContext *ec,
+ unsigned int bo,
+ const Elf32_Ehdr *ehdr,
+ Elf32_Half idx,
+ Elf32_Shdr *ret)
+{
+ ssize_t size;
+ uint64_t max;
+ int64_t off;
+ void *data;
+
+ if (ehdr->e_shnum <= idx)
+ return -1;
+ max = ec->get_size (ec->cls);
+ if (ehdr->e_shoff + ehdr->e_shentsize * idx + sizeof (*ret) > max)
+ return -1;
+ off = ec->seek (ec->cls,
+ ehdr->e_shoff + ehdr->e_shentsize * idx,
+ SEEK_SET);
+ if (-1 == off)
+ return -1;
+ size = ec->read (ec->cls,
+ &data,
+ sizeof (*ret));
+ if (size < sizeof (*ret))
+ return -1;
+ EXTRACTOR_common_cat_unpack (data,
+ ELF_SECTION_SPECS[bo],
+ ELF_SECTION_FIELDS (ret));
+ return 0;
+}
+
+
+/**
+ *
+ * @return 0 on success, -1 on error
+ */
+static int
+getDynTag (struct EXTRACTOR_ExtractContext *ec,
+ unsigned int bo,
+ const Elf32_Ehdr *ehdr,
+ Elf32_Off off,
+ Elf32_Word osize,
+ unsigned int idx,
+ Elf32_Dyn *ret)
+{
+ ssize_t size;
+ uint64_t max;
+ int64_t soff;
+ void *data;
+
+ max = ec->get_size (ec->cls);
+ if ( (off + osize > max) ||
+ ((idx + 1) * ELF_DYN_SIZE > osize) )
+ return -1;
+ if (off + idx * ELF_DYN_SIZE + sizeof (*ret) > max)
+ return -1;
+ soff = ec->seek (ec->cls,
+ off + idx * ELF_DYN_SIZE,
+ SEEK_SET);
+ if (-1 == soff)
+ return -1;
+ size = ec->read (ec->cls,
+ &data,
+ sizeof (*ret));
+ if (size < sizeof (*ret))
+ return -1;
+ EXTRACTOR_common_cat_unpack (data,
+ ELF_DYN_SPECS[bo],
+ ELF_DYN_FIELDS (ret));
+ return 0;
+}
+
+
+/**
+ *
+ * @return 0 on success, -1 on error
+ */
+static int
+getProgramHdr (struct EXTRACTOR_ExtractContext *ec,
+ unsigned int bo,
+ const Elf32_Ehdr *ehdr,
+ Elf32_Half idx,
+ Elf32_Phdr *ret)
+{
+ void *data;
+ ssize_t size;
+ int64_t off;
+
+ if (ehdr->e_phnum <= idx)
+ return -1;
+ off = ec->seek (ec->cls,
+ ehdr->e_phoff + ehdr->e_phensize * idx,
+ SEEK_SET);
+ if (-1 == off)
+ return -1;
+ size = ec->read (ec->cls,
+ &data,
+ sizeof (*ret));
+ if (size < sizeof (*ret))
+ return -1;
+ EXTRACTOR_common_cat_unpack (data,
+ ELF_PHDR_SPECS[bo],
+ ELF_PHDR_FIELDS (ret));
+ return 0;
+}
+
+
+/**
+ * @return the string (offset into data, do NOT free), NULL on error
+ */
+static char *
+readStringTable (struct EXTRACTOR_ExtractContext *ec,
+ unsigned int bo,
+ const Elf32_Ehdr *ehdr,
+ Elf32_Half strTableOffset,
+ Elf32_Word sh_name)
+{
+ Elf32_Shdr shrd;
+ char *data;
+ ssize_t size;
+ int64_t off;
+
+ if (-1 == getSectionHdr (ec,
+ bo,
+ ehdr,
+ strTableOffset,
+ &shrd))
+ return NULL;
+ if ((shrd.sh_type != SHT_STRTAB) ||
+ (shrd.sh_size <= sh_name) )
+ return NULL;
+ off = ec->seek (ec->cls,
+ shrd.sh_offset,
+ SEEK_SET);
+ if (-1 == off)
+ return NULL;
+ size = ec->read (ec->cls,
+ (void **) &data,
+ shrd.sh_size);
+ if (size < shrd.sh_size)
+ return NULL;
+ if (data[shrd.sh_size - 1] != '\0')
+ return NULL;
+ return strdup (&data[sh_name]);
+}
+
+
+#define ADD(s, type) do { \
+ if (0!=ec->proc (ec->cls, "elf", type, \
+ EXTRACTOR_METAFORMAT_UTF8, "text/plain", \
+ s, strlen (s) + 1)) \
+ { \
+ return; \
+ } \
+} while (0)
+
+
+/**
+ * Main entry method for the 'application/x-executable' extraction plugin.
+ *
+ * @param ec extraction context provided to the plugin
+ */
+void
+EXTRACTOR_elf_extract_method (struct EXTRACTOR_ExtractContext *ec)
+{
+ Elf32_Ehdr ehdr;
+ Elf64_Ehdr ehdr64;
+ int ret;
+ unsigned int bo;
+ char *data;
+ ssize_t size;
+ uint64_t max;
+ size_t want;
+
+ max = ec->get_size (ec->cls);
+ want = sizeof (ehdr);
+ if (sizeof (ehdr64) > want)
+ want = sizeof (ehdr64);
+ want += EI_NIDENT;
+ if (max < want)
+ return;
+ size = ec->read (ec->cls,
+ (void**) &data,
+ max);
+ if (size < EI_NIDENT)
+ return;
+ if (0 != memcmp (data,
+ elfMagic,
+ sizeof (elfMagic)))
+ return; /* not an elf */
+ switch (data[EI_CLASS])
+ {
+ case ELFCLASS32:
+ if (size < sizeof (Elf32_Ehdr) + EI_NIDENT)
+ return;
+ bo = getByteorder (data[EI_DATA]);
+ EXTRACTOR_common_cat_unpack (&data[EI_NIDENT],
+ ELF_HEADER_SPECS[bo],
+ ELF_HEADER_FIELDS (&ehdr));
+ if (ehdr.e_shoff + ehdr.e_shentsize * ehdr.e_shnum > max)
+ return; /* invalid offsets... */
+ if (ehdr.e_shentsize < ELF_SECTION_SIZE)
+ return; /* huh? */
+ if (ehdr.e_phoff + ehdr.e_phensize * ehdr.e_phnum > max)
+ return;
+ ret = 0;
+ bo = getByteorder (data[EI_CLASS]);
+ break;
+ case ELFCLASS64:
+ if (size < sizeof (Elf64_Ehdr) + EI_NIDENT)
+ return;
+ bo = getByteorder (data[EI_DATA]);
+ EXTRACTOR_common_cat_unpack (&data[EI_NIDENT],
+ ELF64_HEADER_SPECS[bo],
+ ELF64_HEADER_FIELDS (&ehdr64));
+ if (ehdr64.e_shoff + ((uint32_t) ehdr64.e_shentsize * ehdr64.e_shnum) >
+ max)
+ return; /* invalid offsets... */
+ if (ehdr64.e_phoff + ((uint32_t) ehdr64.e_phensize * ehdr64.e_phnum) >
+ max)
+ return;
+ bo = getByteorder (data[EI_CLASS]);
+ ret = 1;
+ break;
+ default:
+ return;
+ }
+
+ ADD ("application/x-executable",
+ EXTRACTOR_METATYPE_MIMETYPE);
+ switch ( ((unsigned char*) data)[EI_OSABI])
+ {
+ case ELFOSABI_LINUX:
+ ADD ("Linux",
+ EXTRACTOR_METATYPE_TARGET_OS);
+ break;
+ case ELFOSABI_FREEBSD:
+ ADD ("FreeBSD",
+ EXTRACTOR_METATYPE_TARGET_OS);
+ break;
+ case ELFOSABI_NETBSD:
+ ADD ("NetBSD",
+ EXTRACTOR_METATYPE_TARGET_OS);
+ break;
+ case ELFOSABI_OPENBSD:
+ ADD ("OpenBSD",
+ EXTRACTOR_METATYPE_TARGET_OS);
+ break;
+ case ELFOSABI_IRIX:
+ ADD ("IRIX",
+ EXTRACTOR_METATYPE_TARGET_OS);
+ break;
+ default:
+ break;
+ }
+ switch ( (0 == ret) ? ehdr.e_type : ehdr64.e_type)
+ {
+ case ET_REL:
+ ADD ("Relocatable file",
+ EXTRACTOR_METATYPE_RESOURCE_TYPE);
+ break;
+ case ET_EXEC:
+ ADD ("Executable file",
+ EXTRACTOR_METATYPE_RESOURCE_TYPE);
+ break;
+ case ET_DYN:
+ ADD ("Shared object file",
+ EXTRACTOR_METATYPE_RESOURCE_TYPE);
+ break;
+ case ET_CORE:
+ ADD ("Core file",
+ EXTRACTOR_METATYPE_RESOURCE_TYPE);
+ break;
+ default:
+ break; /* unknown */
+ }
+ switch ( (0 == ret) ? ehdr.e_machine : ehdr64.e_machine)
+ {
+ case EM_M32:
+ ADD ("M32",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_386:
+ ADD ("i386",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_68K:
+ ADD ("68K",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_88K:
+ ADD ("88K",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_SPARC:
+ ADD ("Sparc",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_860:
+ ADD ("960",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_MIPS:
+ ADD ("MIPS",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_PPC:
+ ADD ("PPC",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_PPC64:
+ ADD ("PPC64",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_S390:
+ ADD ("S390",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_ARM:
+ ADD ("ARM",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_ALPHA:
+ ADD ("ALPHA",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_IA_64:
+ ADD ("IA-64",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_X86_64:
+ ADD ("x86_64",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ case EM_CUDA:
+ ADD ("NVIDIA CUDA",
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
+ break;
+ default:
+ break; /* oops */
+ }
+
+ if (0 != ret)
+ return; /* FIXME: full support for 64-bit ELF... */
+ for (Elf32_Half idx = 0; idx < ehdr.e_phnum; idx++)
+ {
+ Elf32_Phdr phdr;
+
+ if (0 != getProgramHdr (ec,
+ bo,
+ &ehdr,
+ idx,
+ &phdr))
+ return;
+ if (phdr.p_type == PT_DYNAMIC)
+ {
+ unsigned int dc = phdr.p_filesz / ELF_DYN_SIZE;
+ Elf32_Addr stringPtr;
+ Elf32_Half stringIdx;
+ Elf32_Half six;
+
+ stringPtr = 0;
+ for (unsigned int id = 0; id < dc; id++)
+ {
+ Elf32_Dyn dyn;
+
+ if (0 != getDynTag (ec,
+ bo,
+ &ehdr,
+ phdr.p_offset,
+ phdr.p_filesz,
+ id,
+ &dyn))
+ return;
+ if (DT_STRTAB == dyn.d_tag)
+ {
+ stringPtr = dyn.d_un.d_ptr;
+ break;
+ }
+ }
+ if (0 == stringPtr)
+ return;
+ for (six = 0; six < ehdr.e_shnum; six++)
+ {
+ Elf32_Shdr sec;
+
+ if (-1 == getSectionHdr (ec,
+ bo,
+ &ehdr,
+ six,
+ &sec))
+ return;
+ if ( (sec.sh_addr == stringPtr) &&
+ (sec.sh_type == SHT_STRTAB) )
+ {
+ stringIdx = six;
+ break;
+ }
+ }
+ if (six == ehdr.e_shnum)
+ return; /* stringIdx not found */
+
+ for (unsigned int id = 0; id < dc; id++)
+ {
+ Elf32_Dyn dyn;
+
+ if (0 != getDynTag (ec,
+ bo,
+ &ehdr,
+ phdr.p_offset,
+ phdr.p_filesz,
+ id,
+ &dyn))
+ return;
+ switch (dyn.d_tag)
+ {
+ case DT_RPATH:
+ {
+ char *rpath;
+
+ rpath = readStringTable (ec,
+ bo,
+ &ehdr,
+ stringIdx,
+ dyn.d_un.d_val);
+ /* "source" of the dependencies: path
+ to dynamic libraries */
+ if (NULL != rpath)
+ {
+ ADD (rpath,
+ EXTRACTOR_METATYPE_LIBRARY_SEARCH_PATH);
+ free (rpath);
+ }
+ break;
+ }
+ case DT_NEEDED:
+ {
+ char *needed;
+
+ needed = readStringTable (ec,
+ bo,
+ &ehdr,
+ stringIdx,
+ dyn.d_un.d_val);
+ if (NULL != needed)
+ {
+ ADD (needed,
+ EXTRACTOR_METATYPE_LIBRARY_DEPENDENCY);
+ free (needed);
+ }
+ break;
+ }
+ }
+ }
+ }
+ }
+}
+
+
+/* end of gif_extractor.c */
diff --git a/src/plugins/old/elf_extractor.c b/src/plugins/old/elf_extractor.c
@@ -1,666 +0,0 @@
-/*
- This file is part of libextractor.
- Copyright (C) 2004, 2009 Vidyut Samanta and Christian Grothoff
-
- libextractor is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
- option) any later version.
-
- libextractor is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with libextractor; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
- */
-
-#include "platform.h"
-#include "extractor.h"
-#include "pack.h"
-#include <stdint.h>
-
-typedef uint32_t Elf32_Addr;
-typedef uint16_t Elf32_Half;
-typedef uint32_t Elf32_Off;
-typedef int32_t Elf32_Sword;
-typedef uint32_t Elf32_Word;
-
-typedef uint16_t Elf64_Half;
-typedef uint32_t Elf64_Word;
-typedef uint64_t Elf64_Addr;
-typedef uint64_t Elf64_Off;
-
-/* first 4 bytes of the ELF header */
-static char elfMagic[] = { 0x7f, 'E', 'L', 'F' };
-
-#define EI_CLASS 4
-#define EI_DATA 5
-#define EI_VERSION 6
-#define EI_OSABI 7
-#define EI_NIDENT 16
-
-typedef struct
-{
- Elf32_Half e_type;
- Elf32_Half e_machine;
- Elf32_Word e_version;
- Elf32_Addr e_entry;
- Elf32_Off e_phoff;
- Elf32_Off e_shoff; /* offset of the section header table */
- Elf32_Word e_flags;
- Elf32_Half e_ehsize;
- Elf32_Half e_phensize;
- Elf32_Half e_phnum;
- Elf32_Half e_shentsize; /* size of each entry in SH table */
- Elf32_Half e_shnum; /* how many entries in section header table */
- Elf32_Half e_shstrndx; /* section header's sh_name member is index into this string table! */
-} Elf32_Ehdr;
-
-/* elf-header minus e_ident */
-#define ELF_HEADER_SIZE sizeof (Elf32_Ehdr)
-
-#define ELF_HEADER_FIELDS(p) \
- & (p)->e_type, \
- &(p)->e_machine, \
- &(p)->e_version, \
- &(p)->e_entry, \
- &(p)->e_phoff, \
- &(p)->e_shoff, \
- &(p)->e_flags, \
- &(p)->e_ehsize, \
- &(p)->e_phensize, \
- &(p)->e_phnum, \
- &(p)->e_shentsize, \
- &(p)->e_shnum, \
- &(p)->e_shstrndx
-static char *ELF_HEADER_SPECS[] = {
- "hhwwwwwhhhhhh",
- "HHWWWWWHHHHHH",
-};
-
-typedef struct
-{
- Elf64_Half e_type;
- Elf64_Half e_machine;
- Elf64_Word e_version;
- Elf64_Addr e_entry;
- Elf64_Off e_phoff;
- Elf64_Off e_shoff;
- Elf64_Word e_flags;
- Elf64_Half e_ehsize;
- Elf64_Half e_phensize;
- Elf64_Half e_phnum;
- Elf64_Half e_shentsize;
- Elf64_Half e_shnum;
- Elf64_Half e_shstrndx;
-} Elf64_Ehdr;
-
-/* elf-header minus e_ident */
-#define ELF64_HEADER_SIZE sizeof (Elf64_Ehdr)
-
-#define ELF64_HEADER_FIELDS(p) \
- & (p)->e_type, \
- &(p)->e_machine, \
- &(p)->e_version, \
- &(p)->e_entry, \
- &(p)->e_phoff, \
- &(p)->e_shoff, \
- &(p)->e_flags, \
- &(p)->e_ehsize, \
- &(p)->e_phensize, \
- &(p)->e_phnum, \
- &(p)->e_shentsize, \
- &(p)->e_shnum, \
- &(p)->e_shstrndx
-static char *ELF64_HEADER_SPECS[] = {
- "hhwxxxwhhhhhh",
- "HHWXXXWHHHHHH",
-};
-
-
-typedef struct
-{
- Elf32_Word sh_name;
- Elf32_Word sh_type;
- Elf32_Word sh_flags;
- Elf32_Addr sh_addr; /* where loaded */
- Elf32_Off sh_offset; /* where in image (! sh_type==SHT_NOBITS) */
- Elf32_Word sh_size; /* section size in bytes */
- Elf32_Word sh_link; /* for symbol table: section header index of the associated string table! */
- Elf32_Word sh_info; /* "one greater than the symbol table index of the last local symbol _STB_LOCAL_" */
- Elf32_Word sh_addralign;
- Elf32_Word sh_entsize;
-} Elf32_Shdr;
-#define ELF_SECTION_SIZE 40
-
-#define ELF_SECTION_FIELDS(p) \
- & (p)->sh_name, \
- &(p)->sh_type, \
- &(p)->sh_flags, \
- &(p)->sh_addr, \
- &(p)->sh_offset, \
- &(p)->sh_size, \
- &(p)->sh_link, \
- &(p)->sh_info, \
- &(p)->sh_addralign, \
- &(p)->sh_entsize
-static char *ELF_SECTION_SPECS[] = {
- "wwwwwwwwww",
- "WWWWWWWWWW",
-};
-
-typedef struct
-{
- Elf32_Word p_type;
- Elf32_Off p_offset;
- Elf32_Addr p_vaddr;
- Elf32_Addr p_paddr;
- Elf32_Word p_filesz;
- Elf32_Word p_memsz;
- Elf32_Word p_flags;
- Elf32_Word p_align;
-} Elf32_Phdr;
-#define ELF_PDHR_SIZE 32
-#define ELF_PHDR_FIELDS(p) \
- & (p)->p_type, \
- &(p)->p_offset, \
- &(p)->p_vaddr, \
- &(p)->p_paddr, \
- &(p)->p_filesz, \
- &(p)->p_memsz, \
- &(p)->p_flags, \
- &(p)->p_align
-static char *ELF_PHDR_SPECS[] = {
- "wwwwwwww",
- "WWWWWWWW",
-};
-
-typedef struct
-{
- Elf32_Sword d_tag;
- union
- {
- Elf32_Word d_val;
- Elf32_Addr d_ptr;
- } d_un;
-} Elf32_Dyn;
-#define ELF_DYN_SIZE 8
-#define ELF_DYN_FIELDS(p) \
- & (p)->d_tag, \
- &(p)->d_un
-static char *ELF_DYN_SPECS[] = {
- "ww",
- "WW",
-};
-
-#define ET_NONE 0
-#define ET_REL 1
-#define ET_EXEC 2
-#define ET_DYN 3
-#define ET_CORE 4
-#define ET_LOPROC 0xff00
-#define ET_HIPROC 0xffff
-
-#define EM_NONE 0
-#define EM_M32 1
-#define EM_SPARC 2
-#define EM_386 3
-#define EM_68K 4
-#define EM_88K 5
-#define EM_860 7
-#define EM_MIPS 8
-#define EM_PPC 20
-#define EM_PPC64 21
-#define EM_S390 22
-#define EM_ARM 40
-#define EM_ALPHA 41
-#define EM_IA_64 50
-#define EM_X86_64 62
-#define EM_CUDA 190
-
-#define ELFOSABI_NETBSD 2
-#define ELFOSABI_LINUX 3
-#define ELFOSABI_IRIX 8
-#define ELFOSABI_FREEBSD 9
-#define ELFOSABI_OPENBSD 12
-
-#define EV_NONE 0
-#define EV_CURRENT 1
-
-#define SHT_NULL 0
-#define SHT_PROGBITS 1
-#define SHT_SYMTAB 2
-/* string table! */
-#define SHT_STRTAB 3
-#define SHT_RELA 4
-#define SHT_HASH 5
-/* dynamic linking info! */
-#define SHT_DYNAMIC 6
-#define SHT_NOTE 7
-#define SHT_NOBITS 8
-#define SHT_REL 9
-#define SHT_SHLIB 10
-#define SHT_DYNSYM 11
-#define SHT_LOPROC 0x70000000
-#define SHT_HIPROC 0x7fffffff
-#define SHT_LOUSER 0x80000000
-#define SHT_HIUSER 0xffffffff
-
-#define SHF_WRITE 0x1
-#define SHF_ALLOC 0x2
-#define SHF_EXECINSTR 0x4
-#define SHF_MASKPROC 0xf000000
-
-#define DT_NULL 0
-/* name of a needed library, offset into table
- recorded in DT_STRTAB entry */
-#define DT_NEEDED 1
-#define DT_PLTRELSZ 2
-#define DT_PLTGOT 3
-#define DT_HASH 4
-/* address of the string table from where symbol
- names, library names, etc for this DT come from */
-#define DT_STRTAB 5
-#define DT_SYMTAB 6
-#define DT_SYMENT 7
-#define DT_RELA 7
-#define DT_RELASZ 8
-#define DT_RELAENT 9
-/* size of the string-table in bytes */
-#define DT_STRSZ 10
-/* fixme 11 */
-#define DT_INIT 12
-#define DT_FINI 13
-/* string-table offset giving the name of the shared object */
-#define DT_SONAME 14
-/* string-table offset of a null-terminated library search path */
-#define DT_RPATH 15
-#define DT_SYMBOLIC 16
-
-
-#define PT_NULL 0
-#define PT_LOAD 1
-#define PT_DYNAMIC 2
-#define PT_INTERP 3
-#define PT_NOTE 4
-#define PT_SHLIB 5
-#define PT_PHDR 6
-#define PT_LOPROC 0x70000000
-#define PT_HIPROC 0x7fffffff
-
-
-#define ELFCLASSNONE 0
-#define ELFCLASS32 1
-#define ELFCLASS64 2
-
-#define ELFDATANONE 0
-/* little endian */
-#define ELFDATA2LSB 1
-/* big endian */
-#define ELFDATA2MSB 2
-
-/**
- * @param ei_data ELFDATA2LSB or ELFDATA2MSB
- * @return 1 if we need to convert, 0 if not
- */
-static int
-getByteorder (char ei_data)
-{
- if (ei_data == ELFDATA2LSB)
- {
-#if __BYTE_ORDER == __BIG_ENDIAN
- return 1;
-#else
- return 0;
-#endif
- }
- else
- {
-#if __BYTE_ORDER == __BIG_ENDIAN
- return 0;
-#else
- return 1;
-#endif
- }
-}
-
-
-/**
- *
- * @return 0 on success, -1 on error
- */
-static int
-getSectionHdr (const char *data,
- size_t size,
- Elf32_Ehdr *ehdr, Elf32_Half idx, Elf32_Shdr *ret)
-{
- if (ehdr->e_shnum <= idx)
- return -1;
-
- EXTRACTOR_common_cat_unpack (&data[ehdr->e_shoff + ehdr->e_shentsize * idx],
- ELF_SECTION_SPECS[getByteorder (data[EI_CLASS])],
- ELF_SECTION_FIELDS (ret));
- return 0;
-}
-
-
-/**
- *
- * @return 0 on success, -1 on error
- */
-static int
-getDynTag (const char *data,
- size_t size,
- Elf32_Ehdr *ehdr,
- Elf32_Off off, Elf32_Word osize, unsigned int idx, Elf32_Dyn *ret)
-{
- if ((off + osize > size) || ((idx + 1) * ELF_DYN_SIZE > osize))
- return -1;
- EXTRACTOR_common_cat_unpack (&data[off + idx * ELF_DYN_SIZE],
- ELF_DYN_SPECS[getByteorder (data[EI_CLASS])],
- ELF_DYN_FIELDS (ret));
- return 0;
-}
-
-
-/**
- *
- * @return 0 on success, -1 on error
- */
-static int
-getProgramHdr (const char *data,
- size_t size,
- Elf32_Ehdr *ehdr, Elf32_Half idx, Elf32_Phdr *ret)
-{
- if (ehdr->e_phnum <= idx)
- return -1;
-
- EXTRACTOR_common_cat_unpack (&data[ehdr->e_phoff + ehdr->e_phensize * idx],
- ELF_PHDR_SPECS[getByteorder (data[EI_CLASS])],
- ELF_PHDR_FIELDS (ret));
- return 0;
-}
-
-
-/**
- * Parse ELF header.
- * @return 0 on success for 32 bit, 1 on success for 64 bit, -1 on error
- */
-static int
-getELFHdr (const char *data,
- size_t size,
- Elf32_Ehdr *ehdr,
- Elf64_Ehdr *ehdr64)
-{
- /* catlib */
- if (size < EI_NIDENT)
- return -1;
- if (0 != strncmp (data, elfMagic, sizeof (elfMagic)))
- return -1; /* not an elf */
-
- switch (data[EI_CLASS])
- {
- case ELFCLASS32:
- if (size < sizeof (Elf32_Ehdr) + EI_NIDENT)
- return -1;
- EXTRACTOR_common_cat_unpack (&data[EI_NIDENT],
- ELF_HEADER_SPECS[getByteorder (data[EI_DATA])],
- ELF_HEADER_FIELDS (ehdr));
- if (ehdr->e_shoff + ehdr->e_shentsize * ehdr->e_shnum > size)
- return -1; /* invalid offsets... */
- if (ehdr->e_shentsize < ELF_SECTION_SIZE)
- return -1; /* huh? */
- if (ehdr->e_phoff + ehdr->e_phensize * ehdr->e_phnum > size)
- return -1;
- return 0;
- case ELFCLASS64:
- if (size < sizeof (Elf64_Ehdr) + EI_NIDENT)
- return -1;
- EXTRACTOR_common_cat_unpack (&data[EI_NIDENT],
- ELF64_HEADER_SPECS[getByteorder (
- data[EI_DATA])],
- ELF64_HEADER_FIELDS (ehdr64));
- if (ehdr64->e_shoff + ((uint32_t) ehdr64->e_shentsize * ehdr64->e_shnum) >
- size)
- return -1; /* invalid offsets... */
- if (ehdr64->e_phoff + ((uint32_t) ehdr64->e_phensize * ehdr64->e_phnum) >
- size)
- return -1;
- return 1;
- default:
- return -1;
- }
-}
-
-
-/**
- * @return the string (offset into data, do NOT free), NULL on error
- */
-static const char *
-readStringTable (const char *data,
- size_t size,
- Elf32_Ehdr *ehdr,
- Elf32_Half strTableOffset, Elf32_Word sh_name)
-{
- Elf32_Shdr shrd;
- if (-1 == getSectionHdr (data, size, ehdr, strTableOffset, &shrd))
- return NULL;
- if ((shrd.sh_type != SHT_STRTAB) ||
- (shrd.sh_offset + shrd.sh_size > size) ||
- (shrd.sh_size <= sh_name) ||
- (data[shrd.sh_offset + shrd.sh_size - 1] != '\0'))
- return NULL;
- return &data[shrd.sh_offset + sh_name];
-}
-
-
-#define ADD(s, type) do { if (0!=proc (proc_cls, "elf", type, \
- EXTRACTOR_METAFORMAT_UTF8, "text/plain", \
- s, strlen (s) + 1)) return 1; \
-} while (0)
-
-/* application/x-executable, ELF */
-int
-EXTRACTOR_elf_extract (const char *data,
- size_t size,
- EXTRACTOR_MetaDataProcessor proc,
- void *proc_cls,
- const char *options)
-{
- Elf32_Ehdr ehdr;
- Elf32_Half idx;
- Elf64_Ehdr ehdr64;
- int ret;
-
- ret = getELFHdr (data, size, &ehdr, &ehdr64);
- if (ret == -1)
- return 0;
- ADD ("application/x-executable", EXTRACTOR_METATYPE_MIMETYPE);
- switch ( ((unsigned char*) data)[EI_OSABI])
- {
- case ELFOSABI_LINUX:
- ADD ("Linux", EXTRACTOR_METATYPE_TARGET_OS);
- break;
- case ELFOSABI_FREEBSD:
- ADD ("FreeBSD", EXTRACTOR_METATYPE_TARGET_OS);
- break;
- case ELFOSABI_NETBSD:
- ADD ("NetBSD", EXTRACTOR_METATYPE_TARGET_OS);
- break;
- case ELFOSABI_OPENBSD:
- ADD ("OpenBSD", EXTRACTOR_METATYPE_TARGET_OS);
- break;
- case ELFOSABI_IRIX:
- ADD ("IRIX", EXTRACTOR_METATYPE_TARGET_OS);
- break;
- default:
- break;
- }
- switch ( (ret == 0) ? ehdr.e_type : ehdr64.e_type)
- {
- case ET_REL:
- ADD ("Relocatable file", EXTRACTOR_METATYPE_RESOURCE_TYPE);
- break;
- case ET_EXEC:
- ADD ("Executable file", EXTRACTOR_METATYPE_RESOURCE_TYPE);
- break;
- case ET_DYN:
- ADD ("Shared object file", EXTRACTOR_METATYPE_RESOURCE_TYPE);
- break;
- case ET_CORE:
- ADD ("Core file", EXTRACTOR_METATYPE_RESOURCE_TYPE);
- break;
- default:
- break; /* unknown */
- }
- switch ( (ret == 0) ? ehdr.e_machine : ehdr64.e_machine)
- {
- case EM_M32:
- ADD ("M32", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_386:
- ADD ("i386", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_68K:
- ADD ("68K", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_88K:
- ADD ("88K", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_SPARC:
- ADD ("Sparc", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_860:
- ADD ("960", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_MIPS:
- ADD ("MIPS", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_PPC:
- ADD ("PPC", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_PPC64:
- ADD ("PPC64", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_S390:
- ADD ("S390", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_ARM:
- ADD ("ARM", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_ALPHA:
- ADD ("ALPHA", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_IA_64:
- ADD ("IA-64", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_X86_64:
- ADD ("x86_64", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- case EM_CUDA:
- ADD ("NVIDIA CUDA", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE);
- break;
- default:
- break; /* oops */
- }
-
- if (ret != 0)
- return 0; /* FIXME: full support for 64-bit ELF... */
- for (idx = 0; idx < ehdr.e_phnum; idx++)
- {
- Elf32_Phdr phdr;
-
- if (0 != getProgramHdr (data, size, &ehdr, idx, &phdr))
- return 0;
- if (phdr.p_type == PT_DYNAMIC)
- {
- unsigned int dc = phdr.p_filesz / ELF_DYN_SIZE;
- unsigned int id;
- Elf32_Addr stringPtr;
- Elf32_Half stringIdx;
- Elf32_Half six;
-
- stringPtr = 0;
-
- for (id = 0; id < dc; id++)
- {
- Elf32_Dyn dyn;
- if (0 != getDynTag (data,
- size,
- &ehdr,
- phdr.p_offset, phdr.p_filesz, id, &dyn))
- return 0;
- if (DT_STRTAB == dyn.d_tag)
- {
- stringPtr = dyn.d_un.d_ptr;
- break;
- }
- }
- if (stringPtr == 0)
- return 0;
- for (six = 0; six < ehdr.e_shnum; six++)
- {
- Elf32_Shdr sec;
- if (-1 == getSectionHdr (data, size, &ehdr, six, &sec))
- return 0;
- if ((sec.sh_addr == stringPtr) && (sec.sh_type == SHT_STRTAB))
- {
- stringIdx = six;
- break;
- }
- }
- if (six == ehdr.e_shnum)
- return 0; /* stringIdx not found */
-
- for (id = 0; id < dc; id++)
- {
- Elf32_Dyn dyn;
- if (0 != getDynTag (data,
- size,
- &ehdr,
- phdr.p_offset, phdr.p_filesz, id, &dyn))
- return 0;
- switch (dyn.d_tag)
- {
- case DT_RPATH:
- {
- const char *rpath;
-
- rpath = readStringTable (data,
- size,
- &ehdr,
- stringIdx, dyn.d_un.d_val);
- /* "source" of the dependencies: path
- to dynamic libraries */
- if (rpath != NULL)
- {
- ADD (rpath, EXTRACTOR_METATYPE_LIBRARY_SEARCH_PATH);
- }
- break;
- }
- case DT_NEEDED:
- {
- const char *needed;
-
- needed = readStringTable (data,
- size,
- &ehdr,
- stringIdx, dyn.d_un.d_val);
- if (needed != NULL)
- {
- ADD (needed, EXTRACTOR_METATYPE_LIBRARY_DEPENDENCY);
- }
- break;
- }
- }
- }
-
- }
- }
-
- return 0;
-}
diff --git a/src/plugins/old/pack.c b/src/plugins/pack.c
diff --git a/src/plugins/old/pack.h b/src/plugins/pack.h
diff --git a/src/plugins/test_elf.c b/src/plugins/test_elf.c
@@ -0,0 +1,83 @@
+/*
+ This file is part of libextractor.
+ Copyright (C) 2021 Christian Grothoff
+
+ libextractor is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ libextractor is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with libextractor; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+/**
+ * @file plugins/test_elf.c
+ * @brief testcase for elf plugin
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "test_lib.h"
+
+
+/**
+ * Main function for the ELF testcase.
+ *
+ * @param argc number of arguments (ignored)
+ * @param argv arguments (ignored)
+ * @return 0 on success
+ */
+int
+main (int argc, char *argv[])
+{
+ struct SolutionData elf_sol[] = {
+ {
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ "application/x-executable",
+ strlen ("application/x-executable") + 1,
+ 0
+ },
+ {
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ "i386",
+ strlen ("i386") + 1,
+ 0
+ },
+ {
+ EXTRACTOR_METATYPE_RESOURCE_TYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ "Executable file",
+ strlen ("Executable file") + 1,
+ 0
+ },
+ {
+ EXTRACTOR_METATYPE_LIBRARY_DEPENDENCY,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ "libc.so.6",
+ strlen ("libc.so.6") + 1,
+ 0
+ },
+ { 0, 0, NULL, NULL, 0, -1 }
+ };
+ struct ProblemSet ps[] = {
+ { "testdata/chello-elf",
+ elf_sol },
+ { NULL, NULL }
+ };
+ return ET_main ("elf", ps);
+}
+
+
+/* end of test_elf.c */
diff --git a/src/plugins/testdata/chello-elf b/src/plugins/testdata/chello-elf
Binary files differ.
