commit 72944e8c23a2a0c2592569ffb7a6f76e09258bbb
parent 7f4e9149c26051f5e4c4ef6fd56be8f1a69eebc3
Author: Christian Grothoff <christian@grothoff.org>
Date: Fri, 10 Aug 2012 16:37:53 +0000
hacking on OLE plugin
Diffstat:
1 file changed, 592 insertions(+), 395 deletions(-)
diff --git a/src/plugins/ole2_extractor.c b/src/plugins/ole2_extractor.c
@@ -1,10 +1,10 @@
/*
This file is part of libextractor.
- (C) 2004, 2005, 2006, 2007, 2009 Vidyut Samanta and Christian Grothoff
+ (C) 2004, 2005, 2006, 2007, 2009, 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 2, or (at your
+ 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
@@ -24,16 +24,18 @@
Part of this code was borrowed from wordleaker.cpp. See also
the README file in this directory.
*/
-
+/**
+ * @file plugins/ole2_extractor.c
+ * @brief plugin to support OLE2 (DOC, XLS, etc.) files
+ * @author Christian Grothoff
+ */
#include "platform.h"
#include "extractor.h"
#include "convert.h"
-
#include <glib-object.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
-
#include <gsf/gsf-utils.h>
#include <gsf/gsf-input-memory.h>
#include <gsf/gsf-infile.h>
@@ -42,20 +44,31 @@
#define DEBUG_OLE2 0
-/* ******************************** main extraction code ************************ */
+/**
+ * Give the given UTF8 string to LE by calling 'proc'.
+ *
+ * @param proc callback to invoke
+ * @param proc_cls closure for proc
+ * @param phrase metadata string to pass; may include spaces
+ * just double-quotes or just a space in a double quote;
+ * in those cases, nothing should be done
+ * @param type meta data type to use
+ * @return if 'proc' returned 1, otherwise 0
+ */
static int
-addKeyword(EXTRACTOR_MetaDataProcessor proc,
- void *proc_cls,
- const char *phrase,
- enum EXTRACTOR_MetaType type) {
- if (strlen(phrase) == 0)
+add_metadata (EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *phrase,
+ enum EXTRACTOR_MetaType type)
+{
+ if (0 == strlen (phrase))
return 0;
- if (0 == strcmp(phrase, "\"\""))
+ if (0 == strcmp (phrase, "\"\""))
return 0;
- if (0 == strcmp(phrase, "\" \""))
+ if (0 == strcmp (phrase, "\" \""))
return 0;
- if (0 == strcmp(phrase, " "))
+ if (0 == strcmp (phrase, " "))
return 0;
return proc (proc_cls,
"ole2",
@@ -66,12 +79,26 @@ addKeyword(EXTRACTOR_MetaDataProcessor proc,
strlen (phrase) +1);
}
-typedef struct {
- const char * text;
+
+/**
+ * Entry in the map from OLE meta type strings
+ * to LE types.
+ */
+struct Matches
+{
+ /**
+ * OLE description.
+ */
+ const char *text;
+
+ /**
+ * Corresponding LE type.
+ */
enum EXTRACTOR_MetaType type;
-} Matches;
+};
+
-static Matches tmap[] = {
+static struct Matches tmap[] = {
{ "Title", EXTRACTOR_METATYPE_TITLE },
{ "PresentationFormat", EXTRACTOR_METATYPE_FORMAT },
{ "Category", EXTRACTOR_METATYPE_SECTION },
@@ -116,513 +143,683 @@ static Matches tmap[] = {
};
+/**
+ * Closure for 'process_metadata'.
+ */
struct ProcContext
{
+ /**
+ * Function to call for meta data that was found.
+ */
EXTRACTOR_MetaDataProcessor proc;
+
+ /**
+ * Closure for 'proc'.
+ */
void *proc_cls;
+
+ /**
+ * Return value; 0 to continue to extract, 1 if we are done
+ */
int ret;
};
-static void processMetadata(gpointer key,
- gpointer value,
- gpointer user_data) {
+/**
+ * Function invoked by 'gst_msole_metadata_read' with
+ * metadata found in the document.
+ *
+ * @param key 'const char *' describing the meta data
+ * @param value the UTF8 representation of the meta data
+ * @param user_data our 'struct ProcContext' (closure)
+ */
+static void
+process_metadata (gpointer key,
+ gpointer value,
+ gpointer user_data)
+{
+ const char *type = key;
+ const GsfDocProp *prop = value;
struct ProcContext *pc = user_data;
- const char * type = key;
- const GsfDocProp * prop = value;
- const GValue * gval;
- char * contents;
+ const GValue *gval;
+ char *contents;
int pos;
- if ( (key == NULL) ||
- (value == NULL) )
+ if ( (NULL == key) ||
+ (NULL == value) )
return;
- if (pc->ret != 0)
+ if (0 != pc->ret)
return;
- gval = gsf_doc_prop_get_val(prop);
+ gval = gsf_doc_prop_get_val (prop);
if (G_VALUE_TYPE(gval) == G_TYPE_STRING)
{
- contents = strdup(g_value_get_string(gval));
+ contents = strdup (g_value_get_string (gval));
}
else
{
/* convert other formats? */
- contents = g_strdup_value_contents(gval);
+ contents = g_strdup_value_contents (gval);
}
- if (contents == NULL)
+ if (NULL == contents)
return;
- if ( (strlen(contents) > 0) &&
- (contents[strlen(contents)-1] == '\n') )
- contents[strlen(contents)-1] = '\0';
- pos = 0;
- while (tmap[pos].text != NULL)
- {
- if (0 == strcmp(tmap[pos].text,
- type))
- break;
- pos++;
- }
+ if ( (strlen (contents) > 0) &&
+ ('\n' == contents[strlen (contents) - 1]) )
+ contents [strlen (contents) - 1] = '\0';
if (0 == strcmp (type, "meta:generator"))
{
- const char * mimetype = "application/vnd.ms-files";
- if((0 == strncmp(value, "Microsoft Word", 14)) ||
- (0 == strncmp(value, "Microsoft Office Word", 21)))
+ const char *mimetype = "application/vnd.ms-files";
+ if ( (0 == strncmp (value, "Microsoft Word", 14)) ||
+ (0 == strncmp (value, "Microsoft Office Word", 21)))
mimetype = "application/msword";
- else if((0 == strncmp(value, "Microsoft Excel", 15)) ||
- (0 == strncmp(value, "Microsoft Office Excel", 22)))
+ else if ( (0 == strncmp(value, "Microsoft Excel", 15)) ||
+ (0 == strncmp(value, "Microsoft Office Excel", 22)) )
mimetype = "application/vnd.ms-excel";
- else if((0 == strncmp(value, "Microsoft PowerPoint", 20)) ||
- (0 == strncmp(value, "Microsoft Office PowerPoint", 27)))
+ else if ( (0 == strncmp(value, "Microsoft PowerPoint", 20)) ||
+ (0 == strncmp(value, "Microsoft Office PowerPoint", 27)) )
mimetype = "application/vnd.ms-powerpoint";
- else if(0 == strncmp(value, "Microsoft Project", 17))
+ else if (0 == strncmp(value, "Microsoft Project", 17))
mimetype = "application/vnd.ms-project";
- else if(0 == strncmp(value, "Microsoft Visio", 15))
+ else if (0 == strncmp(value, "Microsoft Visio", 15))
mimetype = "application/vnd.visio";
- else if(0 == strncmp(value, "Microsoft Office", 16))
+ else if (0 == strncmp(value, "Microsoft Office", 16))
mimetype = "application/vnd.ms-office";
-
- if (0 != addKeyword(pc->proc,
- pc->proc_cls, mimetype, EXTRACTOR_METATYPE_MIMETYPE))
+ if (0 != add_metadata (pc->proc,
+ pc->proc_cls,
+ mimetype,
+ EXTRACTOR_METATYPE_MIMETYPE))
{
free (contents);
pc->ret = 1;
return;
}
}
- if (tmap[pos].text != NULL)
+ for (pos = 0; NULL != tmap[pos].text; pos++)
+ if (0 == strcmp (tmap[pos].text,
+ type))
+ break;
+ if ( (NULL != tmap[pos].text) &&
+ (0 != add_metadata (pc->proc, pc->proc_cls,
+ contents,
+ tmap[pos].type)) )
{
- if (0 != addKeyword(pc->proc, pc->proc_cls,
- contents,
- tmap[pos].type))
- {
- free (contents);
- pc->ret = 1;
- return;
- }
+ free (contents);
+ pc->ret = 1;
+ return;
}
-#if DEBUG_OLE2
- else
- printf("No match for type `%s'\n",
- type);
-#endif
free(contents);
}
+/**
+ * Function called on (Document)SummaryInformation OLE
+ * streams.
+ *
+ * @param in the input OLE stream
+ * @param proc function to call on meta data found
+ * @param proc_cls closure for proc
+ * @return 0 to continue to extract, 1 if we are done
+ */
static int
-process(GsfInput * in,
- EXTRACTOR_MetaDataProcessor proc,
- void *proc_cls)
+process (GsfInput *in,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
{
struct ProcContext pc;
- GsfDocMetaData * sections;
- GError * error;
+ GsfDocMetaData *sections;
pc.proc = proc;
pc.proc_cls = proc_cls;
pc.ret = 0;
- sections = gsf_doc_meta_data_new();
- error = gsf_msole_metadata_read(in, sections);
- if (error == NULL) {
- gsf_doc_meta_data_foreach(sections,
- &processMetadata,
- &pc);
- }
- g_object_unref(G_OBJECT(sections));
+ sections = gsf_doc_meta_data_new ();
+ if (NULL == gsf_msole_metadata_read (in, sections))
+ {
+ gsf_doc_meta_data_foreach (sections,
+ &process_metadata,
+ &pc);
+ }
+ g_object_unref (G_OBJECT (sections));
return pc.ret;
}
+
+/**
+ * Function called on SfxDocumentInfo OLE
+ * streams.
+ *
+ * @param in the input OLE stream
+ * @param proc function to call on meta data found
+ * @param proc_cls closure for proc
+ * @return 0 to continue to extract, 1 if we are done
+ */
static int
-processSO(GsfInput * src,
- EXTRACTOR_MetaDataProcessor proc,
- void *proc_cls) {
- off_t size = gsf_input_size(src);
- if ( (size < 0x374) || (size > 4*1024*1024) ) /* == 0x375?? */
- return 0;
- char buf[size];
- gsf_input_read(src, size, (unsigned char*) buf);
- if ( (buf[0] != 0x0F) ||
- (buf[1] != 0x0) ||
- (0 != strncmp(&buf[2],
- "SfxDocumentInfo",
- strlen("SfxDocumentInfo"))) ||
- (buf[0x11] != 0x0B) ||
- (buf[0x13] != 0x00) || /* pw protected! */
- (buf[0x12] != 0x00) )
+process_star_office (GsfInput *src,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
+{
+ off_t size = gsf_input_size (src);
+
+ if ( (size < 0x374) ||
+ (size > 4*1024*1024) ) /* == 0x375?? */
return 0;
- buf[0xd3] = '\0';
- if (buf[0x94] + buf[0x93] > 0)
- if (0 != addKeyword(proc, proc_cls,
- &buf[0x95],
- EXTRACTOR_METATYPE_TITLE))
+ {
+ char buf[size];
+
+ gsf_input_read (src, size, (unsigned char*) buf);
+ if ( (buf[0] != 0x0F) ||
+ (buf[1] != 0x0) ||
+ (0 != strncmp (&buf[2],
+ "SfxDocumentInfo",
+ strlen ("SfxDocumentInfo"))) ||
+ (buf[0x11] != 0x0B) ||
+ (buf[0x13] != 0x00) || /* pw protected! */
+ (buf[0x12] != 0x00) )
+ return 0;
+ buf[0xd3] = '\0';
+ if ( (buf[0x94] + buf[0x93] > 0) &&
+ (0 != add_metadata (proc, proc_cls,
+ &buf[0x95],
+ EXTRACTOR_METATYPE_TITLE)) )
return 1;
- buf[0x114] = '\0';
- if (buf[0xd5] + buf[0xd4] > 0)
- if (0 != addKeyword(proc, proc_cls,
- &buf[0xd6],
- EXTRACTOR_METATYPE_SUBJECT))
+ buf[0x114] = '\0';
+ if ( (buf[0xd5] + buf[0xd4] > 0) &&
+ (0 != add_metadata (proc, proc_cls,
+ &buf[0xd6],
+ EXTRACTOR_METATYPE_SUBJECT)) _)
return 1;
- buf[0x215] = '\0';
- if (buf[0x115] + buf[0x116] > 0)
- if (0 != addKeyword(proc, proc_cls,
- &buf[0x117],
- EXTRACTOR_METATYPE_COMMENT))
+ buf[0x215] = '\0';
+ if ( (buf[0x115] + buf[0x116] > 0) &&
+ (0 != add_metadata (proc, proc_cls,
+ &buf[0x117],
+ EXTRACTOR_METATYPE_COMMENT)) )
return 1;
- buf[0x296] = '\0';
- if (buf[0x216] + buf[0x217] > 0)
- if (0 != addKeyword(proc, proc_cls,
- &buf[0x218],
- EXTRACTOR_METATYPE_KEYWORDS))
+ buf[0x296] = '\0';
+ if ( (buf[0x216] + buf[0x217] > 0) &&
+ (0 != add_metadata(proc, proc_cls,
+ &buf[0x218],
+ EXTRACTOR_METATYPE_KEYWORDS)) )
return 1;
- /* fixme: do timestamps,
- mime-type, user-defined info's */
+ /* fixme: do timestamps,
+ mime-type, user-defined info's */
+ }
return 0;
}
-/* *************** wordleaker stuff *************** */
+/**
+ * We use "__" to translate using iso-639.
+ *
+ * @param a string to translate
+ * @return translated string
+ */
#define __(a) dgettext("iso-639", a)
-static const char * lidToLanguage( unsigned int lid ) {
- switch ( lid ) {
- case 0x0400:
- return _("No Proofing");
- case 0x0401:
- return __("Arabic");
- case 0x0402:
- return __("Bulgarian");
- case 0x0403:
- return __("Catalan");
- case 0x0404:
- return _("Traditional Chinese");
- case 0x0804:
- return _("Simplified Chinese");
- case 0x0405:
- return __("Chechen");
- case 0x0406:
- return __("Danish");
- case 0x0407:
- return __("German");
- case 0x0807:
- return _("Swiss German");
- case 0x0408:
- return __("Greek");
- case 0x0409:
- return _("U.S. English");
- case 0x0809:
- return _("U.K. English");
- case 0x0c09:
- return _("Australian English");
- case 0x040a:
- return _("Castilian Spanish");
- case 0x080a:
- return _("Mexican Spanish");
- case 0x040b:
- return __("Finnish");
- case 0x040c:
- return __("French");
- case 0x080c:
- return _("Belgian French");
- case 0x0c0c:
- return _("Canadian French");
- case 0x100c:
- return _("Swiss French");
- case 0x040d:
- return __("Hebrew");
- case 0x040e:
- return __("Hungarian");
- case 0x040f:
- return __("Icelandic");
- case 0x0410:
- return __("Italian");
- case 0x0810:
- return _("Swiss Italian");
- case 0x0411:
- return __("Japanese");
- case 0x0412:
- return __("Korean");
- case 0x0413:
- return __("Dutch");
- case 0x0813:
- return _("Belgian Dutch");
- case 0x0414:
- return _("Norwegian Bokmal");
- case 0x0814:
- return __("Norwegian Nynorsk");
- case 0x0415:
- return __("Polish");
- case 0x0416:
- return __("Brazilian Portuguese");
- case 0x0816:
- return __("Portuguese");
- case 0x0417:
- return _("Rhaeto-Romanic");
- case 0x0418:
- return __("Romanian");
- case 0x0419:
- return __("Russian");
- case 0x041a:
- return _("Croato-Serbian (Latin)");
- case 0x081a:
- return _("Serbo-Croatian (Cyrillic)");
- case 0x041b:
- return __("Slovak");
- case 0x041c:
+
+/**
+ * Get the language string for the given language ID (lid)
+ * value.
+ *
+ * @param lid language id value
+ * @return language string corresponding to the lid
+ */
+static const char *
+lid_to_language (unsigned int lid)
+{
+ switch (lid)
+ {
+ case 0x0400:
+ return _("No Proofing");
+ case 0x0401:
+ return __("Arabic");
+ case 0x0402:
+ return __("Bulgarian");
+ case 0x0403:
+ return __("Catalan");
+ case 0x0404:
+ return _("Traditional Chinese");
+ case 0x0804:
+ return _("Simplified Chinese");
+ case 0x0405:
+ return __("Chechen");
+ case 0x0406:
+ return __("Danish");
+ case 0x0407:
+ return __("German");
+ case 0x0807:
+ return _("Swiss German");
+ case 0x0408:
+ return __("Greek");
+ case 0x0409:
+ return _("U.S. English");
+ case 0x0809:
+ return _("U.K. English");
+ case 0x0c09:
+ return _("Australian English");
+ case 0x040a:
+ return _("Castilian Spanish");
+ case 0x080a:
+ return _("Mexican Spanish");
+ case 0x040b:
+ return __("Finnish");
+ case 0x040c:
+ return __("French");
+ case 0x080c:
+ return _("Belgian French");
+ case 0x0c0c:
+ return _("Canadian French");
+ case 0x100c:
+ return _("Swiss French");
+ case 0x040d:
+ return __("Hebrew");
+ case 0x040e:
+ return __("Hungarian");
+ case 0x040f:
+ return __("Icelandic");
+ case 0x0410:
+ return __("Italian");
+ case 0x0810:
+ return _("Swiss Italian");
+ case 0x0411:
+ return __("Japanese");
+ case 0x0412:
+ return __("Korean");
+ case 0x0413:
+ return __("Dutch");
+ case 0x0813:
+ return _("Belgian Dutch");
+ case 0x0414:
+ return _("Norwegian Bokmal");
+ case 0x0814:
+ return __("Norwegian Nynorsk");
+ case 0x0415:
+ return __("Polish");
+ case 0x0416:
+ return __("Brazilian Portuguese");
+ case 0x0816:
+ return __("Portuguese");
+ case 0x0417:
+ return _("Rhaeto-Romanic");
+ case 0x0418:
+ return __("Romanian");
+ case 0x0419:
+ return __("Russian");
+ case 0x041a:
+ return _("Croato-Serbian (Latin)");
+ case 0x081a:
+ return _("Serbo-Croatian (Cyrillic)");
+ case 0x041b:
+ return __("Slovak");
+ case 0x041c:
return __("Albanian");
- case 0x041d:
- return __("Swedish");
- case 0x041e:
- return __("Thai");
- case 0x041f:
- return __("Turkish");
- case 0x0420:
- return __("Urdu");
- case 0x0421:
- return __("Bahasa");
- case 0x0422:
- return __("Ukrainian");
- case 0x0423:
- return __("Byelorussian");
- case 0x0424:
- return __("Slovenian");
- case 0x0425:
- return __("Estonian");
- case 0x0426:
- return __("Latvian");
- case 0x0427:
- return __("Lithuanian");
- case 0x0429:
- return _("Farsi");
- case 0x042D:
- return __("Basque");
- case 0x042F:
- return __("Macedonian");
- case 0x0436:
- return __("Afrikaans");
- case 0x043E:
- return __("Malayalam");
- default:
- return NULL;
- }
+ case 0x041d:
+ return __("Swedish");
+ case 0x041e:
+ return __("Thai");
+ case 0x041f:
+ return __("Turkish");
+ case 0x0420:
+ return __("Urdu");
+ case 0x0421:
+ return __("Bahasa");
+ case 0x0422:
+ return __("Ukrainian");
+ case 0x0423:
+ return __("Byelorussian");
+ case 0x0424:
+ return __("Slovenian");
+ case 0x0425:
+ return __("Estonian");
+ case 0x0426:
+ return __("Latvian");
+ case 0x0427:
+ return __("Lithuanian");
+ case 0x0429:
+ return _("Farsi");
+ case 0x042D:
+ return __("Basque");
+ case 0x042F:
+ return __("Macedonian");
+ case 0x0436:
+ return __("Afrikaans");
+ case 0x043E:
+ return __("Malayalam");
+ default:
+ return NULL;
+ }
}
+/**
+ * Extract editing history from XTable stream.
+ *
+ * @param stream OLE stream to process
+ * @param lcSttbSavedBy length of the revision history in bytes
+ * @param fcSttbSavedBy offset of the revision history in the stream
+ * @param proc function to call on meta data found
+ * @param proc_cls closure for proc
+ * @return 0 to continue to extract, 1 if we are done
+ */
static int
-history_extract(GsfInput * stream,
- unsigned int lcbSttbSavedBy,
- unsigned int fcSttbSavedBy,
- EXTRACTOR_MetaDataProcessor proc,
- void *proc_cls)
+history_extract (GsfInput *stream,
+ unsigned int lcbSttbSavedBy,
+ unsigned int fcSttbSavedBy,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
{
- unsigned int where = 0;
- unsigned char * lbuffer;
+ unsigned int where;
+ unsigned char *lbuffer;
unsigned int i;
unsigned int length;
- char * author;
- char * filename;
- char * rbuf;
+ char *author;
+ char *filename;
+ char *rbuf;
unsigned int nRev;
int ret;
- // goto offset of revision
- gsf_input_seek(stream, fcSttbSavedBy, G_SEEK_SET);
- if (gsf_input_remaining(stream) < lcbSttbSavedBy)
+ /* goto offset of revision information */
+ gsf_input_seek (stream, fcSttbSavedBy, G_SEEK_SET);
+ if (gsf_input_remaining (stream) < lcbSttbSavedBy)
return 0;
- lbuffer = malloc(lcbSttbSavedBy);
- if (lbuffer == NULL)
+ if (NULL == (lbuffer = malloc (lcbSttbSavedBy)))
return 0;
- // read all the revision history
- gsf_input_read(stream, lcbSttbSavedBy, lbuffer);
- // there are n strings, so n/2 revisions (author & file)
+ /* read all the revision history */
+ gsf_input_read (stream, lcbSttbSavedBy, lbuffer);
+ /* there are n strings, so n/2 revisions (author & file) */
nRev = (lbuffer[2] + (lbuffer[3] << 8)) / 2;
where = 6;
ret = 0;
- for (i=0; i < nRev; i++) {
- if (where >= lcbSttbSavedBy)
- break;
- length = lbuffer[where++];
- if ( (where + 2 * length + 2 >= lcbSttbSavedBy) ||
- (where + 2 * length + 2 <= where) )
- break;
- author = EXTRACTOR_common_convert_to_utf8((const char*) &lbuffer[where],
- length * 2,
- "UTF-16BE");
- where += length * 2 + 1;
- length = lbuffer[where++];
- if ( (where + 2 * length >= lcbSttbSavedBy) ||
- (where + 2 * length + 1 <= where) ) {
- if (author != NULL)
- free(author);
- break;
+ for (i=0; i < nRev; i++)
+ {
+ if (where >= lcbSttbSavedBy)
+ break;
+ length = lbuffer[where++];
+ if ( (where + 2 * length + 2 >= lcbSttbSavedBy) ||
+ (where + 2 * length + 2 <= where) )
+ break;
+ author = EXTRACTOR_common_convert_to_utf8 ((const char*) &lbuffer[where],
+ length * 2,
+ "UTF-16BE");
+ where += length * 2 + 1;
+ length = lbuffer[where++];
+ if ( (where + 2 * length >= lcbSttbSavedBy) ||
+ (where + 2 * length + 1 <= where) )
+ {
+ if (NULL != author)
+ free(author);
+ break;
+ }
+ filename = EXTRACTOR_common_convert_to_utf8 ((const char*) &lbuffer[where],
+ length * 2,
+ "UTF-16BE");
+ where += length * 2 + 1;
+ if ( (NULL != author) &&
+ (NULL != filename) )
+ {
+ if (NULL != (rbuf = malloc (strlen (author) + strlen (filename) + 512)))
+ {
+ snprintf (rbuf,
+ 512 + strlen (author) + strlen (filename),
+ _("Revision #%u: Author `%s' worked on `%s'"),
+ i,
+ author,
+ filename);
+ ret = add_metadata (proc, proc_cls,
+ rbuf,
+ EXTRACTOR_METATYPE_REVISION_HISTORY);
+ free (rbuf);
+ }
+ }
+ if (NULL != author)
+ free (author);
+ if (NULL != filename)
+ free (filename);
+ if (0 != ret)
+ break;
}
- filename = EXTRACTOR_common_convert_to_utf8((const char*) &lbuffer[where],
- length * 2,
- "UTF-16BE");
- where += length * 2 + 1;
- if ( (author != NULL) &&
- (filename != NULL) )
- {
- rbuf = malloc(strlen(author) + strlen(filename) + 512);
- if (rbuf != NULL)
- {
- snprintf(rbuf,
- 512 + strlen(author) + strlen(filename),
- _("Revision #%u: Author '%s' worked on '%s'"),
- i, author, filename);
- ret = addKeyword(proc, proc_cls,
- rbuf,
- EXTRACTOR_METATYPE_REVISION_HISTORY);
- if (rbuf != NULL)
- free(rbuf);
- }
- }
- if (author != NULL)
- free(author);
- if (filename != NULL)
- free(filename);
- if (0 != ret)
- break;
- }
- free(lbuffer);
+ free (lbuffer);
return ret;
}
+/* *************************** custom GSF input method ***************** */
+
+G_BEGIN_DECLS
+#define LE_TYPE_INPUT (le_input_get_type ())
+#define LE_INPUT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TYPE_LE_INPUT, LeInput))
+#define LE_INPUT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TYPE_LE_INPUT, LeInputClass))
+#define IS_LE_INPUT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TYPE_LE_INPUT))
+#define IS_LE_INPUT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TYPE_LE_INPUT))
+#define LE_INPUT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TYPE_LE_INPUT, LeInputClass))
-const char *
-EXTRACTOR_ole2_options ()
+/**
+ * Overall state of an "LeInput" object.
+ */
+typedef struct _LeInput
{
- /*
- Since the Gnome developers think that being unable to
- unload plugins is an 'acceptable' limitation, we
- require out-of-process execution for plugins depending
- on libgsf and other glib-based plugins.
- See also https://bugzilla.gnome.org/show_bug.cgi?id=374940
- */
- return "oop-only";
+ /**
+ * Inherited state from parent (GsfInput).
+ */
+ GsfInput input;
+
+ /*< private > */
+ /**
+ * Private state of the LeInput.
+ */
+ LeInputPrivate *priv;
+} LeInput;
+
+
+/**
+ * Internal state of an "LeInput" object.
+ */
+typedef struct _LeInputPrivate
+{
+ /**
+ * Our extraction context.
+ */
+ struct EXTRACTOR_ExtractContext *ec;
+} LeInputPrivate;
+
+
+/**
+ * LeInput's class state.
+ */
+typedef struct _LeInputClass
+{
+ /**
+ * GsfInput is our parent class.
+ */
+ GsfInputClass parent_class;
+
+ /* Padding for future expansion */
+ void (*_gtk_reserved1) (void);
+ void (*_gtk_reserved2) (void);
+ void (*_gtk_reserved3) (void);
+ void (*_gtk_reserved4) (void);
+} LeInputClass;
+
+
+/**
+ * Required method to obtain the LeInput "type".
+ */
+GType
+le_input_get_type (void) G_GNUC_CONST;
+
+
+/**
+ * Constructor for LeInput objects.
+ *
+ * @param ec extraction context to use
+ * @return the LeInput, NULL on error
+ */
+GsfInput *
+le_input_new (struct EXTRACTOR_ExtractContext *ec);
+G_END_DECLS
+
+
+/**
+ * Macro to create LeInput type definition.
+ */
+G_DEFINE_TYPE (LeInput, le_input, GSF_TYPE_INPUT)
+
+
+/**
+ *
+ */
+static void
+le_input_class_init (LeInputClass *class)
+{
+ // GObjectClass *gobject_class;
+ GsfInputClass *input_class;
+
+ // gobject_class = (GObjectClass *) class;
+ input_class = (GsfInputClass *) class;
+ input_class->read = le_input_read;
+ g_type_class_add_private (class, sizeof (LeInputPrivate));
}
-int
-EXTRACTOR_ole2_extract (const char *data,
- size_t size,
- EXTRACTOR_MetaDataProcessor proc,
- void *proc_cls,
- const char *options)
+
+/* *********************** end of custom GSF input method ************* */
+
+
+/**
+ * Main entry method for the OLE2 extraction plugin.
+ *
+ * @param ec extraction context provided to the plugin
+ */
+void
+EXTRACTOR_ole2_extract_method (struct EXTRACTOR_ExtractContext *ec)
{
- GsfInput * input;
- GsfInfile * infile;
- GsfInput * src;
- const char * name;
- int i;
+ GsfInput *input;
+ GsfInfile *infile;
+ GsfInput *src;
+ const char *name;
+ unsigned int i;
unsigned int lcb;
unsigned int fcb;
- const unsigned char * data512;
+ const unsigned char *data512;
unsigned int lid;
- const char * lang;
+ const char *lang;
int ret;
- ret = 0;
if (size < 512 + 898)
- return 0; /* can hardly be OLE2 */
- input = gsf_input_memory_new((const guint8 *) data,
- (gsf_off_t) size,
- FALSE);
- if (input == NULL)
- return 0;
-
- infile = gsf_infile_msole_new(input, NULL);
- if (infile == NULL) {
- g_object_unref(G_OBJECT(input));
- return 0;
- }
- lcb = 0;
- fcb = 0;
- for (i=0;i<gsf_infile_num_children(infile);i++) {
- name = gsf_infile_name_by_index (infile, i);
- src = NULL;
- if (ret != 0)
- break;
- if (name == NULL)
- continue;
- if ( (0 == strcmp(name, "\005SummaryInformation"))
- || (0 == strcmp(name, "\005DocumentSummaryInformation")) ) {
- src = gsf_infile_child_by_index (infile, i);
- if (src != NULL)
- ret = process(src,
- proc,
- proc_cls);
+ return; /* can hardly be OLE2 */
+ if (NULL == (input = gsf_input_memory_new ((const guint8 *) data,
+ (gsf_off_t) size,
+ FALSE)))
+ return;
+ if (NULL == (infile = gsf_infile_msole_new (input, NULL)))
+ {
+ g_object_unref (G_OBJECT (input));
+ return 0;
}
- if (0 == strcmp(name, "SfxDocumentInfo")) {
- src = gsf_infile_child_by_index (infile, i);
- if ( (src != NULL) && (ret == 0) )
- ret = processSO(src,
- proc,
- proc_cls);
+ ret = 0;
+ for (i=0;i<gsf_infile_num_children (infile);i++)
+ {
+ if (0 != ret)
+ break;
+ if (NULL == (name = gsf_infile_name_by_index (infile, i)))
+ continue;
+ src = NULL;
+ if ( ( (0 == strcmp(name, "\005SummaryInformation")) ||
+ (0 == strcmp(name, "\005DocumentSummaryInformation")) ) &&
+ (NULL != (src = gsf_infile_child_by_index (infile, i))) )
+ ret = process (src,
+ proc,
+ proc_cls);
+ if ( (0 == strcmp (name, "SfxDocumentInfo")) &&
+ (NULL != (src = gsf_infile_child_by_index (infile, i))) )
+ ret = process_star_office (src,
+ proc,
+ proc_cls);
+ if (NULL != src)
+ g_object_unref (G_OBJECT (src));
}
- if (src != NULL)
- g_object_unref(G_OBJECT(src));
- }
+ if (0 != ret)
+ goto CLEANUP;
data512 = (const unsigned char*) &data[512];
lid = data512[6] + (data512[7] << 8);
+ if ( (NULL != (lang = lid_to_language (lid))) &&
+ (0 != (ret = add_metadata (proc, proc_cls,
+ lang,
+ EXTRACTOR_METATYPE_LANGUAGE))) )
+ goto CLEANUP;
lcb = data512[726] + (data512[727] << 8) + (data512[728] << 16) + (data512[729] << 24);
fcb = data512[722] + (data512[723] << 8) + (data512[724] << 16) + (data512[725] << 24);
- lang = lidToLanguage(lid);
- if ( (lang != NULL) && (ret == 0) )
- ret = addKeyword(proc, proc_cls,
- lang,
- EXTRACTOR_METATYPE_LANGUAGE);
- if (lcb >= 6) {
- for (i=0;i<gsf_infile_num_children(infile);i++) {
+ if (lcb < 6)
+ goto CLEANUP;
+ for (i=0;i<gsf_infile_num_children (infile);i++)
+ {
if (ret != 0)
break;
- name = gsf_infile_name_by_index (infile, i);
- if (name == NULL)
+ if (NULL == (name = gsf_infile_name_by_index (infile, i)))
continue;
- if ( (0 == strcmp(name, "1Table")) ||
- (0 == strcmp(name, "0Table")) ) {
- src = gsf_infile_child_by_index (infile, i);
- if (src != NULL) {
- ret = history_extract(src,
- lcb,
- fcb,
- proc, proc_cls);
- g_object_unref(G_OBJECT(src));
- }
- }
+ if ( ( (0 == strcmp (name, "1Table")) ||
+ (0 == strcmp (name, "0Table")) ) &&
+ (NULL != (src = gsf_infile_child_by_index (infile, i))) )
+ {
+ ret = history_extract (src,
+ lcb,
+ fcb,
+ proc, proc_cls);
+ g_object_unref (G_OBJECT (src));
+ }
}
- }
- g_object_unref(G_OBJECT(infile));
- g_object_unref(G_OBJECT(input));
+ CLEANUP:
+ g_object_unref (G_OBJECT (infile));
+ g_object_unref (G_OBJECT (input));
return ret;
}
+/**
+ * Custom log function we give to GSF to disable logging.
+ *
+ * @param log_domain unused
+ * @param log_level unused
+ * @param message unused
+ * @param user_data unused
+ */
static void
nolog (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
- gpointer user_data) {
+ gpointer user_data)
+{
+ /* do nothing */
}
-void __attribute__ ((constructor)) ole2_ltdl_init() {
+/**
+ * OLE2 plugin constructor. Initializes glib and gsf, in particular
+ * gsf logging is disabled.
+ */
+void __attribute__ ((constructor))
+ole2_ltdl_init()
+{
g_type_init();
#ifdef HAVE_GSF_INIT
gsf_init();
#endif
/* disable logging -- thanks, Jody! */
- g_log_set_handler ("libgsf:msole", G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING, &nolog, NULL);
+ g_log_set_handler ("libgsf:msole",
+ G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING,
+ &nolog, NULL);
}
-void __attribute__ ((destructor)) ole2_ltdl_fini() {
+/**
+ * OLE2 plugin destructor. Shutdown of gsf.
+ */
+void __attribute__ ((destructor))
+ole2_ltdl_fini()
+{
#ifdef HAVE_GSF_INIT
gsf_shutdown();
#endif
}
-/* end of ole2_extractor.c */
+/* end of ole2_extractor.c */
