Examples with COSObjectKey org.apache.pdfbox.cos.COSObjectKey used on opensource projects

Example 11 with COSObjectKey

use of org.apache.pdfbox.cos.COSObjectKey in project pdfbox by apache.

the class ActionManagerFactory method callCreateAction.

/**
 * Call the create action to add the ActionManager to the result list. If the aDict parameter isn't an instance of
 * COSDictionary, this method throws a ValdiationException. If the aDict parameter is a reference to a
 * COSDicitonary, the action manager is create only if the linked COSObjectKey is missing from the "alreadyCreated"
 * map, in this case the action is added to the map. If the aDict parameter is an instance of COSDIctionary, it is
 * impossible to check if the ActionManager already exists in the "alreadyCreated" map.
 *
 * @param aDict
 *            a COSBase object (COSObject or COSDictionary) which represent the action dictionary.
 * @param ctx
 *            the preflight validation context.
 * @param result
 *            the list of ActionManager to updated if the aDict parameter is valid.
 * @param additionActionKey
 *            the Action identifier if it is an additional action
 * @param alreadyCreated
 *            This map is used to know if an Action has already been validated. It is useful to avoid infinite loop
 *            in an action which has a Next entry.
 * @throws ValidationException
 */
private void callCreateAction(COSBase aDict, PreflightContext ctx, List<AbstractActionManager> result, String additionActionKey, Map<COSObjectKey, Boolean> alreadyCreated) throws ValidationException {
    COSDocument cosDocument = ctx.getDocument().getDocument();
    if (COSUtils.isDictionary(aDict, cosDocument)) {
        if (aDict instanceof COSObject) {
            COSObjectKey cok = new COSObjectKey((COSObject) aDict);
            if (!alreadyCreated.containsKey(cok)) {
                result.add(createActionManager(ctx, COSUtils.getAsDictionary(aDict, cosDocument), additionActionKey));
                alreadyCreated.put(cok, true);
            }
        } else {
            result.add(createActionManager(ctx, COSUtils.getAsDictionary(aDict, cosDocument), additionActionKey));
        }
    } else {
        ctx.addValidationError(new ValidationError(PreflightConstants.ERROR_ACTION_INVALID_TYPE, "Action entry isn't an instance of COSDictionary"));
    }
}

Example 12 with COSObjectKey

use of org.apache.pdfbox.cos.COSObjectKey in project pdfbox by apache.

the class PreflightParser method parseXrefTable.

/**
 * Same method than the {@linkplain PDFParser#parseXrefTable(long)} with additional controls : -
 * EOL mandatory after the 'xref' keyword - Cross reference subsection header uses single white
 * space as separator - and so on
 *
 * @param startByteOffset the offset to start at
 * @return false on parsing error
 * @throws IOException If an IO error occurs.
 */
@Override
protected boolean parseXrefTable(long startByteOffset) throws IOException {
    if (source.peek() != 'x') {
        return false;
    }
    String xref = readString();
    if (!xref.equals("xref")) {
        addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_CROSS_REF, "xref must be followed by a EOL character"));
        return false;
    }
    if (!nextIsEOL()) {
        addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_CROSS_REF, "xref must be followed by EOL"));
    }
    // signal start of new XRef
    xrefTrailerResolver.nextXrefObj(startByteOffset, XRefType.TABLE);
    // Xref tables can have multiple sections. Each starts with a starting object id and a count.
    while (true) {
        // just after the xref<EOL> there are an integer
        // first obj id
        long currObjID;
        // the number of objects in the xref table
        int count;
        long offset = source.getPosition();
        String line = readLine();
        Pattern pattern = Pattern.compile("(\\d+)\\s(\\d+)(\\s*)");
        Matcher matcher = pattern.matcher(line);
        if (matcher.matches()) {
            currObjID = Long.parseLong(matcher.group(1));
            count = Integer.parseInt(matcher.group(2));
        } else {
            addValidationError(new ValidationError(ERROR_SYNTAX_CROSS_REF, "Cross reference subsection header is invalid: '" + line + "' at position " + source.getPosition()));
            // reset source cursor to read xref information
            source.seek(offset);
            // first obj id
            currObjID = readObjectNumber();
            // the number of objects in the xref table
            count = readInt();
        }
        skipSpaces();
        for (int i = 0; i < count; i++) {
            if (source.isEOF() || isEndOfName((char) source.peek())) {
                break;
            }
            if (source.peek() == 't') {
                addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_CROSS_REF, "Expected xref line but 't' found"));
                break;
            }
            // Ignore table contents
            String currentLine = readLine();
            String[] splitString = currentLine.split(" ");
            if (splitString.length < 3) {
                addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_CROSS_REF, "invalid xref line: " + currentLine));
                break;
            }
            // This supports the corrupt table as reported in PDFBOX-474 (XXXX XXX XX n)
            if (splitString[splitString.length - 1].equals("n")) {
                try {
                    long currOffset = Long.parseLong(splitString[0]);
                    int currGenID = Integer.parseInt(splitString[1]);
                    COSObjectKey objKey = new COSObjectKey(currObjID, currGenID);
                    xrefTrailerResolver.setXRef(objKey, currOffset);
                } catch (NumberFormatException e) {
                    addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_CROSS_REF, "offset or genid can't be read as number " + e.getMessage(), e));
                }
            } else if (!splitString[2].equals("f")) {
                addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_CROSS_REF, "Corrupt XRefTable Entry - ObjID:" + currObjID));
            }
            currObjID++;
            skipSpaces();
        }
        skipSpaces();
        if (!isDigit()) {
            break;
        }
    }
    return true;
}

Example 13 with COSObjectKey

use of org.apache.pdfbox.cos.COSObjectKey in project pdfbox by apache.

the class CatalogValidationProcess method validateICCProfile.

/**
 * This method checks the destOutputProfile which must be a valid ICCProfile.
 *
 * If an other ICCProfile exists in the mapDestOutputProfile, a ValdiationError
 * (ERROR_GRAPHIC_OUTPUT_INTENT_ICC_PROFILE_MULTIPLE) is returned because of only one profile is authorized. If the
 * ICCProfile already exist in the mapDestOutputProfile, the method returns null. If the destOutputProfile contains
 * an invalid ICCProfile, a ValidationError (ERROR_GRAPHIC_OUTPUT_INTENT_ICC_PROFILE_INVALID) is returned If the
 * destOutputProfile is an empty stream, a ValidationError(ERROR_GRAPHIC_OUTPUT_INTENT_INVALID_ENTRY) is returned.
 *
 * If the destOutputFile is valid, mapDestOutputProfile is updated, the ICCProfile is added to the document ctx and
 * null is returned.
 *
 * @param destOutputProfile
 * @param mapDestOutputProfile
 * @param ctx the preflight context.
 * @throws ValidationException
 */
protected void validateICCProfile(COSBase destOutputProfile, Map<COSObjectKey, Boolean> mapDestOutputProfile, PreflightContext ctx) throws ValidationException {
    try {
        if (destOutputProfile == null) {
            return;
        }
        // destOutputProfile should be an instance of COSObject because of this is a object reference
        if (destOutputProfile instanceof COSObject) {
            if (mapDestOutputProfile.containsKey(new COSObjectKey((COSObject) destOutputProfile))) {
                // the profile is already checked. continue
                return;
            } else if (!mapDestOutputProfile.isEmpty()) {
                // A DestOutputProfile exits but it isn't the same, error
                addValidationError(ctx, new ValidationError(ERROR_GRAPHIC_OUTPUT_INTENT_ICC_PROFILE_MULTIPLE, "More than one ICCProfile is defined"));
                return;
            }
        // else the profile will be kept in the tmpDestOutputProfile if it is valid
        }
        // keep reference to avoid multiple profile definition
        mapDestOutputProfile.put(new COSObjectKey((COSObject) destOutputProfile), true);
        COSDocument cosDocument = ctx.getDocument().getDocument();
        COSStream stream = COSUtils.getAsStream(destOutputProfile, cosDocument);
        if (stream == null) {
            addValidationError(ctx, new ValidationError(ERROR_GRAPHIC_OUTPUT_INTENT_INVALID_ENTRY, "OutputIntent object uses a NULL Object"));
            return;
        }
        InputStream is = stream.createInputStream();
        ICC_Profile iccp = null;
        try {
            iccp = ICC_Profile.getInstance(is);
        } finally {
            is.close();
        }
        if (!validateICCProfileNEntry(stream, ctx, iccp)) {
            return;
        }
        if (!validateICCProfileVersion(iccp, ctx)) {
            return;
        }
        if (ctx.getIccProfileWrapper() == null) {
            ctx.setIccProfileWrapper(new ICCProfileWrapper(iccp));
        }
    } catch (IllegalArgumentException e) {
        // this is not a ICC_Profile
        addValidationError(ctx, new ValidationError(ERROR_GRAPHIC_OUTPUT_INTENT_ICC_PROFILE_INVALID, "DestOutputProfile isn't a valid ICCProfile: " + e.getMessage(), e));
    } catch (IOException e) {
        throw new ValidationException("Unable to parse the ICC Profile.", e);
    }
}

Example 14 with COSObjectKey

use of org.apache.pdfbox.cos.COSObjectKey in project pdfbox by apache.

the class COSUtils method getAsFloat.

/**
 * Return the COSBase object as Float if the COSBase object is an instance of COSFloat or a reference to a COSFloat
 * object. In other cases, this method returns null;
 *
 * @param cbase the object to get.
 * @param cDoc the document.
 * @return the object as Float if the object is a COSFloat or a reference to it. Returns null otherwise.
 */
public static Float getAsFloat(COSBase cbase, COSDocument cDoc) {
    if (cbase instanceof COSObject) {
        COSObjectKey key = new COSObjectKey((COSObject) cbase);
        COSObject obj = cDoc.getObjectFromPool(key);
        if (obj == null) {
            return null;
        } else if (obj.getObject() instanceof COSNumber) {
            return ((COSNumber) obj.getObject()).floatValue();
        } else {
            return null;
        }
    } else if (cbase instanceof COSNumber) {
        return ((COSNumber) cbase).floatValue();
    } else {
        return null;
    }
}

Example 15 with COSObjectKey

use of org.apache.pdfbox.cos.COSObjectKey in project pdfbox by apache.

the class COSUtils method isString.

/**
 * return true if the elt is a COSString or a COSName or a reference to it.
 *
 * @param elt the object to check.
 * @param doc the document.
 * @return true if the object is a COSString or a COSName or a reference to it.
 */
public static boolean isString(COSBase elt, COSDocument doc) {
    if (elt instanceof COSObject) {
        COSObjectKey key = new COSObjectKey((COSObject) elt);
        COSObject obj = doc.getObjectFromPool(key);
        return (obj != null && (obj.getObject() instanceof COSString || obj.getObject() instanceof COSName));
    }
    return (elt instanceof COSString || elt instanceof COSName);
}