commit 29afc1541aa39797fd9990c452b9f260f2ac91fa
parent 32f281a5d1ad6770e6dbffc3141d90cac6dcef34
Author: Christian Grothoff <christian@grothoff.org>
Date: Mon, 14 Dec 2009 18:24:41 +0000
deb
Diffstat:
5 files changed, 417 insertions(+), 365 deletions(-)
diff --git a/src/include/extractor.h b/src/include/extractor.h
@@ -182,19 +182,32 @@ enum EXTRACTOR_MetaType
EXTRACTOR_METATYPE_EMBEDDED_FILE_SIZE = 66,
EXTRACTOR_METATYPE_FINDER_FILE_TYPE = 67,
EXTRACTOR_METATYPE_FINDER_FILE_CREATOR = 68,
- /* FIXME... */
/* software package specifics (deb, rpm, tgz) */
-
+ EXTRACTOR_METATYPE_PACKAGE_NAME = 69,
+ EXTRACTOR_METATYPE_PACKAGE_VERSION = 70,
+ EXTRACTOR_METATYPE_PACKAGE_SECTION = 71,
+ EXTRACTOR_METATYPE_UPLOAD_PRIORITY = 72,
+ EXTRACTOR_METATYPE_PACKAGE_DEPENDENCY = 73,
+ EXTRACTOR_METATYPE_PACKAGE_CONFLICTS = 74,
+ EXTRACTOR_METATYPE_PACKAGE_REPLACES = 75,
+ EXTRACTOR_METATYPE_PACKAGE_PROVIDES = 76,
+ EXTRACTOR_METATYPE_PACKAGE_RECOMMENDS = 77,
+ EXTRACTOR_METATYPE_PACKAGE_SUGGESTS = 78,
+ EXTRACTOR_METATYPE_PACKAGE_MAINTAINER = 79,
+ EXTRACTOR_METATYPE_PACKAGE_INSTALLED_SIZE = 80,
+ EXTRACTOR_METATYPE_PACKAGE_SOURCE = 81,
+ EXTRACTOR_METATYPE_PACKAGE_ESSENTIAL = 82,
+ EXTRACTOR_METATYPE_TARGET_ARCHITECTURE = 83,
+ EXTRACTOR_METATYPE_PACKAGE_PRE_DEPENDENCY = 84,
+
+
EXTRACTOR_METATYPE_PACKAGER = 45,
EXTRACTOR_METATYPE_VENDOR = 46,
EXTRACTOR_METATYPE_LICENSE = 47,
EXTRACTOR_METATYPE_DISTRIBUTION = 48,
EXTRACTOR_METATYPE_BUILDHOST = 49,
EXTRACTOR_METATYPE_TARGET_OS = 50,
- EXTRACTOR_METATYPE_DEPENDENCY = 51,
- EXTRACTOR_METATYPE_CONFLICTS = 61,
- EXTRACTOR_METATYPE_REPLACES = 62,
EXTRACTOR_METATYPE_PROVIDES = 63,
/* (text) document processing specifics */
@@ -268,7 +281,6 @@ enum EXTRACTOR_MetaType
EXTRACTOR_METATYPE_DISCLAIMER = 27,
EXTRACTOR_METATYPE_FULL_DATA = 137,
- EXTRACTOR_METATYPE_VERSIONNUMBER = 14,
EXTRACTOR_METATYPE_ORGANIZATION = 15,
EXTRACTOR_METATYPE_CONTRIBUTOR = 19,
diff --git a/src/main/extractor.c b/src/main/extractor.c
@@ -226,8 +226,42 @@ static const struct MetaTypeDescription meta_type_descriptions[] = {
gettext_noop ("standard Macintosh Finder file type information") },
{ gettext_noop ("creator"),
gettext_noop ("standard Macintosh Finder file creator information") },
-
-
+ { gettext_noop ("package name"),
+ gettext_noop ("unique identifier for the package") },
+ /* 70 */
+ { gettext_noop ("package version"),
+ gettext_noop ("version of the software and its package") },
+ { gettext_noop ("section"),
+ gettext_noop ("category the software package belongs to") },
+ { gettext_noop ("upload priority"),
+ gettext_noop ("priority for promoting the release to production") },
+ { gettext_noop ("dependencies"),
+ gettext_noop ("packages this package depends upon") },
+ { gettext_noop ("conflicting packages"),
+ gettext_noop ("packages that cannot be installed with this package") },
+ /* 75 */
+ { gettext_noop ("replaced packages"),
+ gettext_noop ("packages made obsolete by this package") },
+ { gettext_noop ("provides"),
+ gettext_noop ("functionality provided by this package") },
+ { gettext_noop ("recommendations"),
+ gettext_noop ("packages recommended for installation in conjunction with this package") },
+ { gettext_noop ("suggestions"),
+ gettext_noop ("packages suggested for installation in conjunction with this package") },
+ { gettext_noop ("maintainer"),
+ gettext_noop ("name of the maintainer") },
+ /* 80 */
+ { gettext_noop ("installed size"),
+ gettext_noop ("space consumption after installation") },
+ { gettext_noop ("source"),
+ gettext_noop ("original source code") },
+ { gettext_noop ("is essential"),
+ gettext_noop ("package is marked as essential") },
+ { gettext_noop ("target architecture"),
+ gettext_noop ("hardware architecture the package can be used for") },
+ { gettext_noop ("pre-dependency"),
+ gettext_noop ("dependency that must be satisfied before installation") },
+ /* 85 */
#if 0
gettext_noop("author"),
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
@@ -88,6 +88,7 @@ endif
plugin_LTLIBRARIES = \
libextractor_applefile.la \
libextractor_asf.la \
+ libextractor_deb.la \
libextractor_html.la \
libextractor_it.la \
libextractor_mime.la
@@ -105,6 +106,13 @@ libextractor_asf_la_SOURCES = \
libextractor_asf_la_LDFLAGS = \
$(PLUGINFLAGS)
+libextractor_deb_la_SOURCES = \
+ deb_extractor.c
+libextractor_deb_la_LDFLAGS = \
+ $(PLUGINFLAGS)
+libextractor_deb_la_LIBADD = \
+ -lz
+
libextractor_html_la_SOURCES = \
html_extractor.c
libextractor_html_la_LDFLAGS = \
@@ -127,7 +135,6 @@ libextractor_mime_la_LDFLAGS = \
OLD_LIBS = \
$(pdfplugin) \
- libextractor_deb.la \
libextractor_dvi.la \
libextractor_elf.la \
$(extraflac) \
@@ -316,16 +323,6 @@ libextractor_man_la_LIBADD = \
$(top_builddir)/src/main/libextractor.la \
$(LE_LIBINTL)
-if HAVE_ZLIB
-libextractor_deb_la_SOURCES = \
- debextractor.c
-libextractor_deb_la_LDFLAGS = \
- $(PLUGINFLAGS)
-libextractor_deb_la_LIBADD = \
- $(top_builddir)/src/main/libextractor.la \
- -lz
-endif
-
libextractor_riff_la_SOURCES = \
riffextractor.c
libextractor_riff_la_LDFLAGS = \
diff --git a/src/plugins/deb_extractor.c b/src/plugins/deb_extractor.c
@@ -0,0 +1,355 @@
+/*
+ This file is part of libextractor.
+ (C) 2002, 2003, 2004 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
+
+#include "platform.h"
+#include "extractor.h"
+#include <zlib.h>
+
+/*
+ * The .deb is an ar-chive file. It contains a tar.gz file
+ * named "control.tar.gz" which then contains a file 'control'
+ * that has the meta-data. And which variant of the various
+ * ar file formats is used is also not quite certain. Yuck.
+ *
+ * References:
+ * http://www.mkssoftware.com/docs/man4/tar.4.asp
+ * http://lists.debian.org/debian-policy/2003/12/msg00000.html
+ * http://www.opengroup.org/onlinepubs/009695399/utilities/ar.html
+ */
+
+
+static char *
+stndup (const char *str, size_t n)
+{
+ char *tmp;
+ tmp = malloc (n + 1);
+ tmp[n] = '\0';
+ memcpy (tmp, str, n);
+ return tmp;
+}
+
+
+
+typedef struct
+{
+ const char *text;
+ enum EXTRACTOR_MetaType type;
+} Matches;
+
+/* see also: "man 5 deb-control" */
+static Matches tmap[] = {
+ {"Package: ", EXTRACTOR_METATYPE_PACKAGE_NAME},
+ {"Version: ", EXTRACTOR_METATYPE_PACKAGE_VERSION},
+ {"Section: ", EXTRACTOR_METATYPE_PACKAGE_SECTION},
+ {"Priority: ", EXTRACTOR_METATYPE_UPLOAD_PRIORITY},
+ {"Architecture: ", EXTRACTOR_METATYPE_TARGET_ARCHITECTURE},
+ {"Depends: ", EXTRACTOR_METATYPE_PACKAGE_DEPENDENCY},
+ {"Recommends: ", EXTRACTOR_METATYPE_PACKAGE_RECOMMENDS},
+ {"Suggests: ", EXTRACTOR_METATYPE_PACKAGE_SUGGESTS},
+ {"Installed-Size: ",EXTRACTOR_METATYPE_PACKAGE_INSTALLED_SIZE},
+ {"Maintainer: ", EXTRACTOR_METATYPE_PACKAGE_MAINTAINER},
+ {"Description: ", EXTRACTOR_METATYPE_DESCRIPTION},
+ {"Source: ", EXTRACTOR_METATYPE_PACKAGE_SOURCE},
+ {"Pre-Depends: ", EXTRACTOR_METATYPE_PACKAGE_PRE_DEPENDENCY},
+ {"Conflicts: ", EXTRACTOR_METATYPE_PACKAGE_CONFLICTS},
+ {"Replaces: ", EXTRACTOR_METATYPE_PACKAGE_REPLACES},
+ {"Provides: ", EXTRACTOR_METATYPE_PACKAGE_PROVIDES},
+ {"Essential: ", EXTRACTOR_METATYPE_PACKAGE_ESSENTIAL},
+ {NULL, 0}
+};
+
+
+/**
+ * Process the control file.
+ */
+static int
+processControl (const char *data,
+ const size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
+{
+ size_t pos;
+ char *key;
+ char *val;
+
+ pos = 0;
+ while (pos < size)
+ {
+ size_t colon;
+ size_t eol;
+ int i;
+
+ colon = pos;
+ while (data[colon] != ':')
+ {
+ if ((colon > size) || (data[colon] == '\n'))
+ return 0;
+ colon++;
+ }
+ colon++;
+ while ((colon < size) && (isspace (data[colon])))
+ colon++;
+ eol = colon;
+ while ((eol < size) &&
+ ((data[eol] != '\n') ||
+ ((eol + 1 < size) && (data[eol + 1] == ' '))))
+ eol++;
+ if ((eol == colon) || (eol > size))
+ return 0;
+ key = stndup (&data[pos], colon - pos);
+ i = 0;
+ while (tmap[i].text != NULL)
+ {
+ if (0 == strcmp (key, tmap[i].text))
+ {
+ val = stndup (&data[colon], eol - colon);
+ if (0 != proc (proc_cls,
+ "deb",
+ tmap[i].type,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ val,
+ strlen(val) + 1))
+ {
+ free (val);
+ return 1;
+ }
+ free (val);
+ break;
+ }
+ i++;
+ }
+ free (key);
+ pos = eol + 1;
+ }
+ return 0;
+}
+
+
+typedef struct
+{
+ char name[100];
+ char mode[8];
+ char userId[8];
+ char groupId[8];
+ char filesize[12];
+ char lastModTime[12];
+ char chksum[8];
+ char link;
+ char linkName[100];
+} TarHeader;
+
+typedef struct
+{
+ TarHeader tar;
+ char magic[6];
+ char version[2];
+ char uname[32];
+ char gname[32];
+ char devmajor[8];
+ char devminor[8];
+ char prefix[155];
+} USTarHeader;
+
+/**
+ * Process the control.tar file.
+ */
+static int
+processControlTar (const char *data,
+ const size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
+{
+ TarHeader *tar;
+ USTarHeader *ustar;
+ size_t pos;
+
+ pos = 0;
+ while (pos + sizeof (TarHeader) < size)
+ {
+ unsigned long long fsize;
+ char buf[13];
+
+ tar = (TarHeader *) & data[pos];
+ if (pos + sizeof (USTarHeader) < size)
+ {
+ ustar = (USTarHeader *) & data[pos];
+ if (0 == strncmp ("ustar", &ustar->magic[0], strlen ("ustar")))
+ pos += 512; /* sizeof(USTarHeader); */
+ else
+ pos += 257; /* sizeof(TarHeader); minus gcc alignment... */
+ }
+ else
+ {
+ pos += 257; /* sizeof(TarHeader); minus gcc alignment... */
+ }
+
+ memcpy (buf, &tar->filesize[0], 12);
+ buf[12] = '\0';
+ if (1 != sscanf (buf, "%12llo", &fsize)) /* octal! Yuck yuck! */
+ return 0;
+ if ((pos + fsize > size) || (fsize > size) || (pos + fsize < pos))
+ return 0;
+
+ if (0 == strncmp (&tar->name[0], "./control", strlen ("./control")))
+ {
+ return processControl (&data[pos], fsize, proc, proc_cls);
+ }
+ if ((fsize & 511) != 0)
+ fsize = (fsize | 511) + 1; /* round up! */
+ if (pos + fsize < pos)
+ return 0;
+ pos += fsize;
+ }
+ return 0;
+}
+
+#define MAX_CONTROL_SIZE (1024 * 1024)
+
+static voidpf
+Emalloc (voidpf opaque, uInt items, uInt size)
+{
+ return malloc (size * items);
+}
+
+static void
+Efree (voidpf opaque, voidpf ptr)
+{
+ free (ptr);
+}
+
+/**
+ * Process the control.tar.gz file.
+ */
+static int
+processControlTGZ (const unsigned char *data,
+ size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
+{
+ uint32_t bufSize;
+ char *buf;
+ z_stream strm;
+ int ret;
+
+ bufSize = data[size - 4] + (data[size - 3] << 8) + (data[size - 2] << 16) + (data[size - 1] << 24);
+ if (bufSize > MAX_CONTROL_SIZE)
+ return 0;
+ memset (&strm, 0, sizeof (z_stream));
+ strm.next_in = (Bytef *) data;
+ strm.avail_in = size;
+ strm.total_in = 0;
+ strm.zalloc = &Emalloc;
+ strm.zfree = &Efree;
+ strm.opaque = NULL;
+
+ if (Z_OK == inflateInit2 (&strm, 15 + 32))
+ {
+ buf = malloc (bufSize);
+ if (buf == NULL)
+ {
+ inflateEnd (&strm);
+ return 0;
+ }
+ strm.next_out = (Bytef *) buf;
+ strm.avail_out = bufSize;
+ inflate (&strm, Z_FINISH);
+ if (strm.total_out > 0)
+ {
+ ret = processControlTar (buf, strm.total_out, proc, proc_cls);
+ inflateEnd (&strm);
+ free (buf);
+ return ret;
+ }
+ free (buf);
+ inflateEnd (&strm);
+ }
+ return 0;
+}
+
+typedef struct
+{
+ char name[16];
+ char lastModTime[12];
+ char userId[6];
+ char groupId[6];
+ char modeInOctal[8];
+ char filesize[10];
+ char trailer[2];
+} ObjectHeader;
+
+
+int
+EXTRACTOR_deb_extract (const char *data,
+ size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *options)
+{
+ size_t pos;
+ int done = 0;
+ ObjectHeader *hdr;
+ unsigned long long fsize;
+ char buf[11];
+
+ if (size < 128)
+ return 0;
+ if (0 != strncmp ("!<arch>\n", data, strlen ("!<arch>\n")))
+ return 0;
+ pos = strlen ("!<arch>\n");
+ while (pos + sizeof (ObjectHeader) < size)
+ {
+ hdr = (ObjectHeader *) & data[pos];
+ if (0 != strncmp (&hdr->trailer[0], "`\n", 2))
+ return 0;
+ memcpy (buf, &hdr->filesize[0], 10);
+ buf[10] = '\0';
+ if (1 != sscanf (buf, "%10llu", &fsize))
+ return 0;
+ pos += sizeof (ObjectHeader);
+ if ((pos + fsize > size) || (fsize > size) || (pos + fsize < pos))
+ return 0;
+ if (0 == strncmp (&hdr->name[0],
+ "control.tar.gz", strlen ("control.tar.gz")))
+ {
+ if (0 != processControlTGZ ((const unsigned char *) &data[pos],
+ fsize, proc, proc_cls))
+ return 1;
+ done++;
+ }
+ if (0 == strncmp (&hdr->name[0],
+ "debian-binary", strlen ("debian-binary")))
+ {
+ if (0 != proc (proc_cls,
+ "deb",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ "application/x-debian-package",
+ strlen ("application/x-debian-package")))
+ return 1;
+ done++;
+ }
+ pos += fsize;
+ if (done == 2)
+ break; /* no need to process the rest of the archive */
+ }
+ return 0;
+}
diff --git a/src/plugins/debextractor.c b/src/plugins/debextractor.c
@@ -1,346 +0,0 @@
-/*
- This file is part of libextractor.
- (C) 2002, 2003, 2004 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
-
-#include "platform.h"
-#include "extractor.h"
-#include <zlib.h>
-
-/*
- * The .deb is an ar-chive file. It contains a tar.gz file
- * named "control.tar.gz" which then contains a file 'control'
- * that has the meta-data. And which variant of the various
- * ar file formats is used is also not quite certain. Yuck.
- *
- * References:
- * http://www.mkssoftware.com/docs/man4/tar.4.asp
- * http://lists.debian.org/debian-policy/2003/12/msg00000.html
- * http://www.opengroup.org/onlinepubs/009695399/utilities/ar.html
- */
-
-static EXTRACTOR_KeywordList *
-addKeyword (EXTRACTOR_KeywordType type,
- char *keyword, EXTRACTOR_KeywordList * next)
-{
- EXTRACTOR_KeywordList *result;
-
- if (keyword == NULL)
- return next;
- result = malloc (sizeof (EXTRACTOR_KeywordList));
- result->next = next;
- result->keyword = keyword;
- result->keywordType = type;
- return result;
-}
-
-static char *
-stndup (const char *str, size_t n)
-{
- char *tmp;
- tmp = malloc (n + 1);
- tmp[n] = '\0';
- memcpy (tmp, str, n);
- return tmp;
-}
-
-
-
-typedef struct
-{
- const char *text;
- EXTRACTOR_KeywordType type;
-} Matches;
-
-/* see also: "man 5 deb-control" */
-static Matches tmap[] = {
- {"Package: ", EXTRACTOR_SOFTWARE},
- {"Version: ", EXTRACTOR_VERSIONNUMBER},
- {"Section: ", EXTRACTOR_GENRE},
- {"Priority: ", EXTRACTOR_PRIORITY},
- {"Architecture: ", EXTRACTOR_CREATED_FOR},
- {"Depends: ", EXTRACTOR_DEPENDENCY},
- {"Recommends: ", EXTRACTOR_RELATION},
- {"Suggests: ", EXTRACTOR_RELATION},
- {"Installed-Size: ", EXTRACTOR_SIZE},
- {"Maintainer: ", EXTRACTOR_PACKAGER},
- {"Description: ", EXTRACTOR_DESCRIPTION},
- {"Source: ", EXTRACTOR_SOURCE},
- {"Pre-Depends: ", EXTRACTOR_DEPENDENCY},
- {"Conflicts: ", EXTRACTOR_CONFLICTS},
- {"Replaces: ", EXTRACTOR_REPLACES},
- {"Provides: ", EXTRACTOR_PROVIDES},
- {NULL, 0},
- {"Essential: ", EXTRACTOR_UNKNOWN}
-};
-
-
-/**
- * Process the control file.
- */
-static struct EXTRACTOR_Keywords *
-processControl (const char *data,
- const size_t size, struct EXTRACTOR_Keywords *prev)
-{
- size_t pos;
- char *key;
-
- pos = 0;
- while (pos < size)
- {
- size_t colon;
- size_t eol;
- int i;
-
- colon = pos;
- while (data[colon] != ':')
- {
- if ((colon > size) || (data[colon] == '\n'))
- return prev;
- colon++;
- }
- colon++;
- while ((colon < size) && (isspace (data[colon])))
- colon++;
- eol = colon;
- while ((eol < size) &&
- ((data[eol] != '\n') ||
- ((eol + 1 < size) && (data[eol + 1] == ' '))))
- eol++;
- if ((eol == colon) || (eol > size))
- return prev;
- key = stndup (&data[pos], colon - pos);
- i = 0;
- while (tmap[i].text != NULL)
- {
- if (0 == strcmp (key, tmap[i].text))
- {
- char *val;
-
- val = stndup (&data[colon], eol - colon);
- prev = addKeyword (tmap[i].type, val, prev);
- break;
- }
- i++;
- }
- free (key);
- pos = eol + 1;
- }
- return prev;
-}
-
-
-typedef struct
-{
- char name[100];
- char mode[8];
- char userId[8];
- char groupId[8];
- char filesize[12];
- char lastModTime[12];
- char chksum[8];
- char link;
- char linkName[100];
-} TarHeader;
-
-typedef struct
-{
- TarHeader tar;
- char magic[6];
- char version[2];
- char uname[32];
- char gname[32];
- char devmajor[8];
- char devminor[8];
- char prefix[155];
-} USTarHeader;
-
-/**
- * Process the control.tar file.
- */
-static struct EXTRACTOR_Keywords *
-processControlTar (const char *data,
- const size_t size, struct EXTRACTOR_Keywords *prev)
-{
- TarHeader *tar;
- USTarHeader *ustar;
- size_t pos;
-
- pos = 0;
- while (pos + sizeof (TarHeader) < size)
- {
- unsigned long long fsize;
- char buf[13];
-
- tar = (TarHeader *) & data[pos];
- if (pos + sizeof (USTarHeader) < size)
- {
- ustar = (USTarHeader *) & data[pos];
- if (0 == strncmp ("ustar", &ustar->magic[0], strlen ("ustar")))
- pos += 512; /* sizeof(USTarHeader); */
- else
- pos += 257; /* sizeof(TarHeader); minus gcc alignment... */
- }
- else
- {
- pos += 257; /* sizeof(TarHeader); minus gcc alignment... */
- }
-
- memcpy (buf, &tar->filesize[0], 12);
- buf[12] = '\0';
- if (1 != sscanf (buf, "%12llo", &fsize)) /* octal! Yuck yuck! */
- return prev;
- if ((pos + fsize > size) || (fsize > size) || (pos + fsize < pos))
- return prev;
-
- if (0 == strncmp (&tar->name[0], "./control", strlen ("./control")))
- {
- return processControl (&data[pos], fsize, prev);
- }
- if ((fsize & 511) != 0)
- fsize = (fsize | 511) + 1; /* round up! */
- if (pos + fsize < pos)
- return prev;
- pos += fsize;
- }
- return prev;
-}
-
-#define MAX_CONTROL_SIZE (1024 * 1024)
-
-static voidpf
-Emalloc (voidpf opaque, uInt items, uInt size)
-{
- return malloc (size * items);
-}
-
-static void
-Efree (voidpf opaque, voidpf ptr)
-{
- free (ptr);
-}
-
-/**
- * Process the control.tar.gz file.
- */
-static struct EXTRACTOR_Keywords *
-processControlTGZ (const unsigned char *data,
- size_t size, struct EXTRACTOR_Keywords *prev)
-{
- uint32_t bufSize;
- char *buf;
- z_stream strm;
-
- bufSize = data[size - 4] + (data[size - 3] << 8) + (data[size - 2] << 16) + (data[size - 1] << 24);
- if (bufSize > MAX_CONTROL_SIZE)
- return prev;
-
- memset (&strm, 0, sizeof (z_stream));
-
- strm.next_in = (Bytef *) data;
- strm.avail_in = size;
- strm.total_in = 0;
- strm.zalloc = &Emalloc;
- strm.zfree = &Efree;
- strm.opaque = NULL;
-
- if (Z_OK == inflateInit2 (&strm, 15 + 32))
- {
- buf = malloc (bufSize);
- if (buf == NULL)
- {
- inflateEnd (&strm);
- return prev;
- }
- strm.next_out = (Bytef *) buf;
- strm.avail_out = bufSize;
- inflate (&strm, Z_FINISH);
- if (strm.total_out > 0)
- {
- prev = processControlTar (buf, strm.total_out, prev);
- inflateEnd (&strm);
- free (buf);
- return prev;
- }
- free (buf);
- inflateEnd (&strm);
- }
- return prev;
-}
-
-typedef struct
-{
- char name[16];
- char lastModTime[12];
- char userId[6];
- char groupId[6];
- char modeInOctal[8];
- char filesize[10];
- char trailer[2];
-} ObjectHeader;
-
-struct EXTRACTOR_Keywords *
-libextractor_deb_extract (const char *filename,
- const char *data,
- const size_t size, struct EXTRACTOR_Keywords *prev)
-{
- size_t pos;
- int done = 0;
-
- if (size < 128)
- return prev;
- if (0 != strncmp ("!<arch>\n", data, strlen ("!<arch>\n")))
- return prev;
- pos = strlen ("!<arch>\n");
- while (pos + sizeof (ObjectHeader) < size)
- {
- ObjectHeader *hdr;
- unsigned long long fsize;
- char buf[11];
-
- hdr = (ObjectHeader *) & data[pos];
- if (0 != strncmp (&hdr->trailer[0], "`\n", 2))
- return prev;
-
- memcpy (buf, &hdr->filesize[0], 10);
- buf[10] = '\0';
- if (1 != sscanf (buf, "%10llu", &fsize))
- return prev;
- pos += sizeof (ObjectHeader);
- if ((pos + fsize > size) || (fsize > size) || (pos + fsize < pos))
- return prev;
- if (0 == strncmp (&hdr->name[0],
- "control.tar.gz", strlen ("control.tar.gz")))
- {
- prev = processControlTGZ ((const unsigned char *) &data[pos],
- fsize, prev);
- done++;
- }
- if (0 == strncmp (&hdr->name[0],
- "debian-binary", strlen ("debian-binary")))
- {
- prev = addKeyword (EXTRACTOR_MIMETYPE,
- strdup ("application/x-debian-package"), prev);
- done++;
- }
- pos += fsize;
- if (done == 2)
- break; /* no need to process the rest of the archive */
- }
- return prev;
-}
