private void GetImagesPpt(OleDocument doc)
{
using (Stream stmPictures = doc.OpenStream("Pictures"))
{
if (stmPictures == null)
{
return;
}
int ImagesFound = 0;
stmPictures.Seek(0, SeekOrigin.Begin);
while (stmPictures.Position < stmPictures.Length - 0x19)
{
stmPictures.Seek(0x4, SeekOrigin.Current);
BinaryReader brData = new BinaryReader(stmPictures);
UInt32 PICLength = brData.ReadUInt32();
if (PICLength == 0 || stmPictures.Position + PICLength > stmPictures.Length)
{
break;
}
byte[] bufferPIC = brData.ReadBytes((int)PICLength);
string strImageName = "Image" + ImagesFound++;
using (MemoryStream msJPG = new MemoryStream(bufferPIC, 0x11, bufferPIC.Length - 0x11))
{
EXIFDocument eDoc = new EXIFDocument(msJPG, ".jpg");
eDoc.analyzeFile();
eDoc.Close();
if (eDoc.Thumbnail != null)
{
lon += eDoc.Thumbnail.Length;
}
cont++;
System.Diagnostics.Debug.WriteLine(cont.ToString());
System.Diagnostics.Debug.WriteLine(lon / (1024 * 1024) + " Megacas");
dicPictureEXIF.Add(strImageName, eDoc);
foreach (UserItem uiEXIF in eDoc.FoundUsers.Items)
{
FoundUsers.AddUniqueItem(uiEXIF.Name, false, uiEXIF.Notes);
}
foreach (ApplicationsItem Application in eDoc.FoundMetaData.Applications.Items)
{
string strApplication = Application.Name;
if (!string.IsNullOrEmpty(strApplication.Trim()) && !FoundMetaData.Applications.Items.Any(A => A.Name == strApplication.Trim()))
{
FoundMetaData.Applications.Items.Add(new ApplicationsItem(strApplication.Trim()));
}
}
}
}
}
}
public override void analyzeFile()
{
try
{
using (Package pZip = Package.Open(stm))
{
Uri uriFile = new Uri("/docProps/core.xml", UriKind.Relative);
if (pZip.PartExists(uriFile))
{
PackagePart pDocument = pZip.GetPart(uriFile);
using (Stream stmDoc = pDocument.GetStream(FileMode.Open, FileAccess.Read))
{
analizeFileCore(stmDoc);
}
}
uriFile = new Uri("/docProps/app.xml", UriKind.Relative);
if (pZip.PartExists(uriFile))
{
PackagePart pDocument = pZip.GetPart(uriFile);
using (Stream stmDoc = pDocument.GetStream(FileMode.Open, FileAccess.Read))
{
analizeFileApp(stmDoc);
}
}
//Control de versiones
if (strExtlo == ".docx")
{
uriFile = new Uri("/word/document.xml", UriKind.Relative);
if (pZip.PartExists(uriFile))
{
PackagePart pDocument = pZip.GetPart(uriFile);
using (Stream stmDoc = pDocument.GetStream(FileMode.Open, FileAccess.Read))
{
analizeFileDocument(stmDoc);
}
}
//Consulta el fichero settings para recuperar el idioma del documento
if (FoundMetaData.Language == string.Empty)
{
uriFile = new Uri("/word/settings.xml", UriKind.Relative);
if (pZip.PartExists(uriFile))
{
PackagePart pDocument = pZip.GetPart(uriFile);
using (Stream stmDoc = pDocument.GetStream(FileMode.Open, FileAccess.Read))
{
analizeFileSettings(stmDoc);
}
}
}
//Consulta el fichero document.xml.rels para obtener los links del documento
uriFile = new Uri("/word/_rels/document.xml.rels", UriKind.Relative);
if (pZip.PartExists(uriFile))
{
PackagePart pDocument = pZip.GetPart(uriFile);
using (Stream stmDoc = pDocument.GetStream(FileMode.Open, FileAccess.Read))
{
analizeLinks(stmDoc);
}
}
}
//Obtiene el nombre de las impresoras y los links de los documentos xlsx
else if (strExtlo == ".xlsx")
{
List <Uri> lstFiles = new List <Uri>();
foreach (PackagePart pp in pZip.GetParts())
{
if (pp.Uri.ToString().StartsWith("/xl/printerSettings/printerSettings"))
{
PackagePart pDocument = pZip.GetPart(pp.Uri);
if (pDocument != null)
{
char[] name = new char[32];
using (StreamReader sr = new StreamReader(pDocument.GetStream(FileMode.Open, FileAccess.Read), Encoding.Unicode))
{
sr.Read(name, 0, 32);
}
FoundPrinters.AddUniqueItem(Functions.FilterPrinter((new string(name).Replace("\0", ""))));
}
}
if (pp.Uri.ToString().StartsWith("/xl/worksheets/_rels/"))
{
PackagePart pDocument = pZip.GetPart(pp.Uri);
using (Stream stmDoc = pDocument.GetStream(FileMode.Open, FileAccess.Read))
{
analizeLinks(stmDoc);
}
}
}
}
else if (strExtlo == ".pptx")
{
List <Uri> lstFiles = new List <Uri>();
foreach (PackagePart pp in pZip.GetParts())
{
if (pp.Uri.ToString().StartsWith("/ppt/slides/_rels/"))
{
PackagePart pDocument = pZip.GetPart(pp.Uri);
using (Stream stmDoc = pDocument.GetStream(FileMode.Open, FileAccess.Read))
{
analizeLinks(stmDoc);
}
}
}
}
//Extraer información EXIF de cada imagen
foreach (PackagePart pp in pZip.GetParts())
{
string strFileName = pp.Uri.ToString();
string strFileNameLo = strFileName.ToLower();
//Filtro que se queda con todas las imagenes *.jpg y *.jpeg de las 3 posibles carpetas
if ((strFileNameLo.StartsWith("/word/media/") ||
strFileNameLo.StartsWith("/ppt/media/") ||
strFileNameLo.StartsWith("/xl/media/")) &&
(strFileNameLo.EndsWith(".jpg") ||
strFileNameLo.EndsWith(".jpeg")))
{
EXIFDocument eDoc = new EXIFDocument(pp.GetStream(FileMode.Open, FileAccess.Read), Path.GetExtension(strFileNameLo));
eDoc.analyzeFile();
dicPictureEXIF.Add(Path.GetFileName(strFileName), eDoc);
//Copiamos los metadatos sobre usuarios y Applications de la imagen al documento
foreach (UserItem uiEXIF in eDoc.FoundUsers.Items)
{
FoundUsers.AddUniqueItem(uiEXIF.Name, false, uiEXIF.Notes);
}
foreach (ApplicationsItem Application in eDoc.FoundMetaData.Applications.Items)
{
string strApplication = Application.Name;
if (!FoundMetaData.Applications.Items.Any(A => A.Name == strApplication.Trim()))
{
FoundMetaData.Applications.Items.Add(new ApplicationsItem(strApplication.Trim()));
}
}
}
}
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
}
}
/// <summary>
/// Extrae los metadatos del documento
/// </summary>
public override void analyzeFile()
{
try
{
using (ZipFile zip = ZipFile.Read(stm))
{
string strFile = "meta.xml";
if (zip.EntryFileNames.Contains(strFile))
{
using (Stream stmXML = new MemoryStream())
{
zip.Extract(strFile, stmXML);
stmXML.Seek(0, SeekOrigin.Begin);
analizeFileMeta(stmXML);
}
}
strFile = "settings.xml";
if (zip.EntryFileNames.Contains(strFile))
{
using (Stream stmXML = new MemoryStream())
{
zip.Extract(strFile, stmXML);
stmXML.Seek(0, SeekOrigin.Begin);
analizeFileSettings(stmXML);
}
}
strFile = "content.xml";
if (zip.EntryFileNames.Contains(strFile))
{
using (Stream stmXML = new MemoryStream())
{
zip.Extract(strFile, stmXML);
stmXML.Seek(0, SeekOrigin.Begin);
analizeFileContent(stmXML);
}
}
strFile = "VersionList.xml";
if (zip.EntryFileNames.Contains(strFile))
{
using (Stream stmXML = new MemoryStream())
{
zip.Extract(strFile, stmXML);
stmXML.Seek(0, SeekOrigin.Begin);
analizeFileVersionList(stmXML, zip);
}
}
//Extrae inforamción EXIF de las imágenes embebidas en el documento
foreach (string strFileName in zip.EntryFileNames)
{
string strFileNameLo = strFileName.ToLower();
//Filtro que obtiene las imagenes *.jpg, *.jpeg dentro de la carpeta "Pictures/"
if (strFileNameLo.StartsWith("pictures/") &&
(strFileNameLo.EndsWith(".jpg") || strFileNameLo.EndsWith(".jpeg")))
{
using (Stream stmXML = new MemoryStream())
{
zip.Extract(strFileName, stmXML);
stmXML.Seek(0, SeekOrigin.Begin);
EXIFDocument eDoc = new EXIFDocument(stmXML, Path.GetExtension(strFileNameLo));
eDoc.analyzeFile();
//Añadimos al diccionario la imagen encontrada junto con la información EXIF de la misma
dicPictureEXIF.Add(Path.GetFileName(strFileName), eDoc);
//Los usuarios de la información EXIF se añaden a los usuarios del documento
foreach (UserItem uiEXIF in eDoc.FoundUsers.Items)
{
FoundUsers.AddUniqueItem(uiEXIF.Name, false, "EXIF");
}
//Añadir el software encontrado en la información EXIF al software usado para generar el documento
foreach (ApplicationsItem Application in eDoc.FoundMetaData.Applications.Items)
{
string strApplication = Application.Name;
if (!FoundMetaData.Applications.Items.Any(A => A.Name == strApplication.Trim()))
{
FoundMetaData.Applications.Items.Add(new ApplicationsItem(strApplication.Trim()));
}
}
}
}
}
}
//Buscamos usuarios en las rutas del documento
foreach (PathsItem ri in FoundPaths.Items)
{
string strUser = PathAnalysis.ExtractUserFromPath(ri.Path);
if (!string.IsNullOrEmpty(strUser))
{
FoundUsers.AddUniqueItem(strUser, ri.IsComputerFolder, "Path: " + ri.Path);
}
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(String.Format("Error analyzing OpenOffice document ({0})", e.ToString()));
}
}
private void GetImagesDoc(OleDocument doc)
{
using (Stream WordDocument = doc.OpenStream("WordDocument"))
{
using (Stream stmData = doc.OpenStream("Data"))
{
if (WordDocument == null || stmData == null)
{
return;
}
WordDocument.Seek(0x18, SeekOrigin.Begin);
BinaryReader br = new BinaryReader(WordDocument);
Int32 fcMin = br.ReadInt32();
Int32 fcMac = br.ReadInt32();
Int32 FKPStart = fcMac % 0x200 == 0 ? fcMac : (fcMac - fcMac % 0x200) + 0x200;
WordDocument.Seek(FKPStart, SeekOrigin.Begin);
int ImagesFound = 0;
while (WordDocument.Position + 0x200 < WordDocument.Length)
{
byte[] FKP = br.ReadBytes(0x200);
if (FKP[0x1FF] == 00)
{
break;
}
foreach (int offset in Functions.SearchBytesInBytes(FKP, new byte[] { 0x03, 0x6A }))
{
if (offset < 0x200 - 5)
{
int PICOffset = FKP[offset + 5] * 0x1000000 + FKP[offset + 4] * 0x10000 + FKP[offset + 3] * 0x100 + FKP[offset + 2];
if (PICOffset >= 0 && PICOffset < stmData.Length)
{
stmData.Seek(PICOffset, SeekOrigin.Begin);
BinaryReader brData = new BinaryReader(stmData);
UInt32 PICLength = brData.ReadUInt32();
long posOri = stmData.Position;
int bufferLen = PICLength < stmData.Length - stmData.Position ? (int)PICLength - 4 : (int)(stmData.Length - stmData.Position);
if (bufferLen == 0)
{
continue;
}
byte[] bufferPIC = brData.ReadBytes(bufferLen);
string strImageName = "Image" + ImagesFound++;
using (StreamReader sr = new StreamReader(new MemoryStream(bufferPIC), Encoding.Unicode))
{
String sRead = sr.ReadToEnd();
foreach (Match m in Regex.Matches(sRead, @"([a-z]:|\\)\\[a-zá-ú0-9\\\s,;.\-_#\$%&()=ñ´'¨{}Ç`/n/r\[\]+^@]+\\[a-zá-ú0-9\\\s,;.\-_#\$%&()=ñ´'¨{}Ç`/n/r\[\]+^@]+", RegexOptions.IgnoreCase))
{
String path = m.Value.Trim();
FoundPaths.AddUniqueItem(PathAnalysis.CleanPath(path), true);
strImageName = Path.GetFileName(path);
}
}
List <int> lstJPEG = Functions.SearchBytesInBytes(bufferPIC, new byte[] { 0xFF, 0xD8 });
if (lstJPEG.Count > 0)
{
using (MemoryStream msJPG = new MemoryStream(bufferPIC, lstJPEG[0], bufferPIC.Length - lstJPEG[0]))
{
EXIFDocument eDoc = new EXIFDocument(msJPG, ".jpg");
eDoc.analyzeFile();
dicPictureEXIF.Add(strImageName, eDoc);
foreach (UserItem uiEXIF in eDoc.FoundUsers.Items)
{
FoundUsers.AddUniqueItem(uiEXIF.Name, false, uiEXIF.Notes);
}
foreach (ApplicationsItem Application in eDoc.FoundMetaData.Applications.Items)
{
string strApplication = Application.Name;
if (!string.IsNullOrEmpty(strApplication.Trim()) && !FoundMetaData.Applications.Items.Any(A => A.Name == strApplication.Trim()))
{
FoundMetaData.Applications.Items.Add(new ApplicationsItem(strApplication.Trim()));
}
}
eDoc.Close();
}
}
}
}
}
}
}
}
}