From 9acf3c2e8aca9016daf76785747d838cdc5b0330 Mon Sep 17 00:00:00 2001 From: Thomas Lenz Date: Mon, 9 Jul 2018 10:11:25 +0200 Subject: add SL20 connecter-backend in a first beta version (getCertificate looks good, create signature is untested) --- .../pdfas/lib/api/IConfigurationConstants.java | 1 + .../at/gv/egiz/pdfas/lib/util/StreamUtils.java | 168 +++++++++++++++++++++ 2 files changed, 169 insertions(+) create mode 100644 pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/util/StreamUtils.java (limited to 'pdf-as-lib/src/main/java/at/gv/egiz/pdfas') diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/IConfigurationConstants.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/IConfigurationConstants.java index e9e7e0f4..f043ff21 100644 --- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/IConfigurationConstants.java +++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/IConfigurationConstants.java @@ -91,6 +91,7 @@ public interface IConfigurationConstants { public static final String MOC_SIGN_URL = "moc.sign.url"; public static final String MOBILE_SIGN_URL = "mobile.sign.url"; + public static final String SL20_SIGN_URL = "sl20.sign.url"; public static final String REGISTER_PROVIDER = "registerSecurityProvider"; diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/util/StreamUtils.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/util/StreamUtils.java new file mode 100644 index 00000000..1590bef7 --- /dev/null +++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/util/StreamUtils.java @@ -0,0 +1,168 @@ + +package at.gv.egiz.pdfas.lib.util; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.io.PrintStream; + +public class StreamUtils { + + /** + * Compare the contents of two InputStreams. + * + * @param is1 The 1st InputStream to compare. + * @param is2 The 2nd InputStream to compare. + * @return boolean true, if both streams contain the exactly the + * same content, false otherwise. + * @throws IOException An error occurred reading one of the streams. + */ + public static boolean compareStreams(InputStream is1, InputStream is2) + throws IOException { + + byte[] buf1 = new byte[256]; + byte[] buf2 = new byte[256]; + int length1; + int length2; + + try { + while (true) { + length1 = is1.read(buf1); + length2 = is2.read(buf2); + + if (length1 != length2) { + return false; + } + if (length1 <= 0) { + return true; + } + if (!compareBytes(buf1, buf2, length1)) { + return false; + } + } + } catch (IOException e) { + throw e; + } finally { + // close both streams + try { + is1.close(); + is2.close(); + } catch (IOException e) { + // ignore this + } + } + } + + /** + * Compare two byte arrays, up to a given maximum length. + * + * @param b1 1st byte array to compare. + * @param b2 2nd byte array to compare. + * @param length The maximum number of bytes to compare. + * @return true, if the byte arrays are equal, false + * otherwise. + */ + private static boolean compareBytes(byte[] b1, byte[] b2, int length) { + if (b1.length != b2.length) { + return false; + } + + for (int i = 0; i < b1.length && i < length; i++) { + if (b1[i] != b2[i]) { + return false; + } + } + + return true; + } + + /** + * Reads a byte array from a stream. + * @param in The InputStream to read. + * @return The bytes contained in the given InputStream. + * @throws IOException on any exception thrown + */ + public static byte[] readStream(InputStream in) throws IOException { + + ByteArrayOutputStream out = new ByteArrayOutputStream(); + copyStream(in, out, null); + + /* + ByteArrayOutputStream out = new ByteArrayOutputStream(); + int b; + while ((b = in.read()) >= 0) + out.write(b); + + */ + in.close(); + return out.toByteArray(); + } + + /** + * Reads a String from a stream, using given encoding. + * @param in The InputStream to read. + * @param encoding The character encoding to use for converting the bytes + * of the InputStream into a String. + * @return The content of the given InputStream converted into + * a String. + * @throws IOException on any exception thrown + */ + public static String readStream(InputStream in, String encoding) throws IOException { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + copyStream(in, out, null); + + /* + ByteArrayOutputStream out = new ByteArrayOutputStream(); + int b; + while ((b = in.read()) >= 0) + out.write(b); + */ + in.close(); + return out.toString(encoding); + } + + /** + * Reads all data (until EOF is reached) from the given source to the + * destination stream. If the destination stream is null, all data is dropped. + * It uses the given buffer to read data and forward it. If the buffer is + * null, this method allocates a buffer. + * + * @param source The stream providing the data. + * @param destination The stream that takes the data. If this is null, all + * data from source will be read and discarded. + * @param buffer The buffer to use for forwarding. If it is null, the method + * allocates a buffer. + * @exception IOException If reading from the source or writing to the + * destination fails. + */ + private static void copyStream(InputStream source, OutputStream destination, byte[] buffer) throws IOException { + if (source == null) { + throw new NullPointerException("Argument \"source\" must not be null."); + } + if (buffer == null) { + buffer = new byte[8192]; + } + + if (destination != null) { + int bytesRead; + while ((bytesRead = source.read(buffer)) >= 0) { + destination.write(buffer, 0, bytesRead); + } + } else { + while (source.read(buffer) >= 0); + } + } + + /** + * Gets the stack trace of the Throwable passed in as a string. + * @param t The Throwable. + * @return a String representing the stack trace of the Throwable. + */ + public static String getStackTraceAsString(Throwable t) + { + ByteArrayOutputStream stackTraceBIS = new ByteArrayOutputStream(); + t.printStackTrace(new PrintStream(stackTraceBIS)); + return new String(stackTraceBIS.toByteArray()); + } +} -- cgit v1.2.3