Examples with LongPropertyValue org.apache.poi.hsmf.datatypes.PropertyValue.LongPropertyValue used on opensource projects

Example 1 with LongPropertyValue

use of org.apache.poi.hsmf.datatypes.PropertyValue.LongPropertyValue in project poi by apache.

the class MAPIMessage method guess7BitEncoding.

/**
    * Tries to identify the correct encoding for 7-bit (non-unicode)
    *  strings in the file.
    * <p>Many messages store their strings as unicode, which is
    *  nice and easy. Some use one-byte encodings for their
    *  strings, but don't always store the encoding anywhere
    *  helpful in the file.</p>
    * <p>This method checks for codepage properties, and failing that
    *  looks at the headers for the message, and uses these to 
    *  guess the correct encoding for your file.</p>
    * <p>Bug #49441 has more on why this is needed</p>
    */
public void guess7BitEncoding() {
    // First choice is a codepage property
    for (MAPIProperty prop : new MAPIProperty[] { MAPIProperty.MESSAGE_CODEPAGE, MAPIProperty.INTERNET_CPID }) {
        List<PropertyValue> val = mainChunks.getProperties().get(prop);
        if (val != null && val.size() > 0) {
            int codepage = ((LongPropertyValue) val.get(0)).getValue();
            try {
                String encoding = CodePageUtil.codepageToEncoding(codepage, true);
                set7BitEncoding(encoding);
                return;
            } catch (UnsupportedEncodingException e) {
                logger.log(POILogger.WARN, "Invalid codepage ID ", codepage, " set for the message via ", prop, ", ignoring");
            }
        }
    }
    // Second choice is a charset on a content type header
    try {
        String[] headers = getHeaders();
        if (headers != null && headers.length > 0) {
            // Look for a content type with a charset
            Pattern p = Pattern.compile("Content-Type:.*?charset=[\"']?([^;'\"]+)[\"']?", Pattern.CASE_INSENSITIVE);
            for (String header : headers) {
                if (header.startsWith("Content-Type")) {
                    Matcher m = p.matcher(header);
                    if (m.matches()) {
                        // Found it! Tell all the string chunks
                        String charset = m.group(1);
                        if (!charset.equalsIgnoreCase("utf-8")) {
                            set7BitEncoding(charset);
                        }
                        return;
                    }
                }
            }
        }
    } catch (ChunkNotFoundException e) {
    }
    // Nothing suitable in the headers, try HTML
    try {
        String html = getHtmlBody();
        if (html != null && html.length() > 0) {
            // Look for a content type in the meta headers
            Pattern p = Pattern.compile("<META\\s+HTTP-EQUIV=\"Content-Type\"\\s+CONTENT=\"text/html;\\s+charset=(.*?)\"");
            Matcher m = p.matcher(html);
            if (m.find()) {
                // Found it! Tell all the string chunks
                String charset = m.group(1);
                set7BitEncoding(charset);
                return;
            }
        }
    } catch (ChunkNotFoundException e) {
    }
}

Example 2 with LongPropertyValue

use of org.apache.poi.hsmf.datatypes.PropertyValue.LongPropertyValue in project poi by apache.

the class PropertiesChunk method readProperties.

protected void readProperties(InputStream value) throws IOException {
    boolean going = true;
    while (going) {
        try {
            // Read in the header
            int typeID = LittleEndian.readUShort(value);
            int id = LittleEndian.readUShort(value);
            long flags = LittleEndian.readUInt(value);
            // Turn the Type and ID into helper objects
            MAPIType type = Types.getById(typeID);
            MAPIProperty prop = MAPIProperty.get(id);
            // Wrap properties we don't know about as custom ones
            if (prop == MAPIProperty.UNKNOWN) {
                prop = MAPIProperty.createCustom(id, type, "Unknown " + id);
            }
            if (type == null) {
                logger.log(POILogger.WARN, "Invalid type found, expected ", prop.usualType, " but got ", typeID, " for property ", prop);
                going = false;
                break;
            }
            // Sanity check the property's type against the value's type
            if (prop.usualType != type) {
                // Is it an allowed substitution?
                if (type == Types.ASCII_STRING && prop.usualType == Types.UNICODE_STRING || type == Types.UNICODE_STRING && prop.usualType == Types.ASCII_STRING) {
                // It's fine to go with the specified instead of the
                // normal
                } else if (prop.usualType == Types.UNKNOWN) {
                    // We don't know what this property normally is, but it
                    // has come
                    // through with a valid type, so use that
                    logger.log(POILogger.INFO, "Property definition for ", prop, " is missing a type definition, found a value with type ", type);
                } else {
                    // Oh dear, something has gone wrong...
                    logger.log(POILogger.WARN, "Type mismatch, expected ", prop.usualType, " but got ", type, " for property ", prop);
                    going = false;
                    break;
                }
            }
            // TODO Detect if it is multi-valued, since if it is
            // then even fixed-length strings store their multiple
            // values in another chunk (much as variable length ones)
            // Work out how long the "data" is
            // This might be the actual data, or just a pointer
            // to another chunk which holds the data itself
            boolean isPointer = false;
            int length = type.getLength();
            if (!type.isFixedLength()) {
                isPointer = true;
                length = 8;
            }
            // Grab the data block
            byte[] data = new byte[length];
            IOUtils.readFully(value, data);
            // Skip over any padding
            if (length < 8) {
                byte[] padding = new byte[8 - length];
                IOUtils.readFully(value, padding);
            }
            // Wrap and store
            PropertyValue propVal = null;
            if (isPointer) {
                // We'll match up the chunk later
                propVal = new ChunkBasedPropertyValue(prop, flags, data);
            } else if (type == Types.NULL) {
                propVal = new NullPropertyValue(prop, flags, data);
            } else if (type == Types.BOOLEAN) {
                propVal = new BooleanPropertyValue(prop, flags, data);
            } else if (type == Types.SHORT) {
                propVal = new ShortPropertyValue(prop, flags, data);
            } else if (type == Types.LONG) {
                propVal = new LongPropertyValue(prop, flags, data);
            } else if (type == Types.LONG_LONG) {
                propVal = new LongLongPropertyValue(prop, flags, data);
            } else if (type == Types.FLOAT) {
                propVal = new FloatPropertyValue(prop, flags, data);
            } else if (type == Types.DOUBLE) {
                propVal = new DoublePropertyValue(prop, flags, data);
            } else if (type == Types.CURRENCY) {
                propVal = new CurrencyPropertyValue(prop, flags, data);
            } else if (type == Types.TIME) {
                propVal = new TimePropertyValue(prop, flags, data);
            } else // TODO Add in the rest of the types
            {
                propVal = new PropertyValue(prop, flags, data);
            }
            if (properties.get(prop) != null) {
                logger.log(POILogger.WARN, "Duplicate values found for " + prop);
            }
            properties.put(prop, propVal);
        } catch (BufferUnderrunException e) {
            // Invalid property, ended short
            going = false;
        }
    }
}