http://snippets.dzone.com/posts Wed, 23 Jul 2008 19:54:57 GMT DZone Snippets: buffer code http://snippets.dzone.com/posts/show/2949 /* <br /> * <br /> * Esempio di Buffer Overflow ... <br /> */ <br /> <br /><code> <br />#include <stdio.h> <br />#include <stdlib.h> <br /> <br />int main(int argc, char *argv[]) <br />{ <br /> char *buffer1 = (char *)calloc(5, sizeof(char)); <br /> char *buffer2 = (char *)calloc(15, sizeof(char)); <br /> char *tmp; <br /> <br /> strcpy(buffer2, "ls -a --color"); <br /> strcpy(buffer1, argv[1]); <br /> <br /> // Indirizzi di memoria... <br /> printf("%p <-- buffer1\n", buffer1); <br /> printf("%p <-- buffer2\n", buffer2); <br /> printf("\n\n"); <br /> <br /> // Stampa indirizzi... <br /> printf("Start code....\n"); <br /> tmp=buffer1; <br /> while(tmp<buffer2+15) <br /> { <br /> printf("%p: %c (0x%x)\n", tmp, *tmp, *(unsigned int *)tmp); <br /> tmp++; <br /> } <br /> <br /> printf("\n"); <br /> system(buffer2); <br /> return 0; <br />} <br /></code> Wed, 01 Nov 2006 23:04:05 GMT http://snippets.dzone.com/posts/show/2949 whitetiger () http://snippets.dzone.com/posts/show/2940 <code> <br />import java.awt.Dimension; <br /> <br />import javax.media.Buffer; <br />import javax.media.Effect; <br />import javax.media.Format; <br />import javax.media.ResourceUnavailableException; <br />import javax.media.format.RGBFormat; <br /> <br />public class SimpleFilter implements Effect <br />{ <br /> protected Format inputFormat = null; <br /> protected Format outputFormat = null; <br /> <br /> protected Format[] inputFormats = null; <br /> protected Format[] outputFormats = null; <br /> <br /> public AngelMotionCodec() <br /> { <br /> inputFormats = new Format[]{ new RGBFormat(null, Format.NOT_SPECIFIED, Format.byteArray, Format.NOT_SPECIFIED, 24, 3, 2, 1, 3, Format.NOT_SPECIFIED, Format.TRUE, Format.NOT_SPECIFIED) }; <br /> outputFormats = new Format[]{ new RGBFormat(null, Format.NOT_SPECIFIED, Format.byteArray, Format.NOT_SPECIFIED, 24, 3, 2, 1, 3, Format.NOT_SPECIFIED, Format.TRUE, Format.NOT_SPECIFIED) }; <br /> } <br /> <br /> /****** Codec ******/ <br /> public Format[] getSupportedInputFormats() <br /> { <br /> return inputFormats; <br /> } <br /> <br /> public Format[] getSupportedOutputFormats(Format input) <br /> { <br /> if(input != null) <br /> { <br /> if(matches(input, inputFormats) != null) <br /> return new Format[]{ outputFormats[0].intersects(input) }; <br /> else <br /> return new Format[0]; <br /> } <br /> <br /> return outputFormats; <br /> } <br /> <br /> public int process(Buffer input, Buffer output) <br /> { <br /> // Swap tra input & output <br /> Object tmp = input.getData(); <br /> <br /> input.setData(output.getData()); <br /> output.setData(tmp); <br /> <br /> return BUFFER_PROCESSED_OK; <br /> } <br /> <br /> public Format setInputFormat(Format input) <br /> { <br /> inputFormat = input; <br /> <br /> return input; <br /> } <br /> <br /> public Format setOutputFormat(Format output) <br /> { <br /> if(output != null || matches(output, outputFormats) != null) <br /> { <br /> RGBFormat inRGB = (RGBFormat) output; <br /> <br /> Dimension size = inRGB.getSize(); <br /> int maxDataLength = inRGB.getMaxDataLength(); <br /> int lineStride = inRGB.getLineStride(); <br /> int flipped = inRGB.getFlipped(); <br /> <br /> if(size == null) <br /> return null; <br /> <br /> if(maxDataLength < size.width*size.height*3) <br /> maxDataLength = size.width*size.height*3; <br /> <br /> if(lineStride < size.width*3) <br /> lineStride = size.width*3; <br /> <br /> if(flipped != Format.FALSE) <br /> flipped = Format.FALSE; <br /> <br /> outputFormat = outputFormats[0].intersects(new RGBFormat(size, maxDataLength, inRGB.getDataType(), inRGB.getFrameRate(), inRGB.getBitsPerPixel(), inRGB.getRedMask(), inRGB.getGreenMask(), inRGB.getBlueMask(), inRGB.getPixelStride(), lineStride, flipped, inRGB.getEndian())); <br /> <br /> return outputFormat; <br /> } <br /> <br /> return null; <br /> } <br /> /****** Codec ******/ <br /> <br /> /****** PlugIn ******/ <br /> public void close() <br /> { <br /> <br /> } <br /> <br /> public String getName() <br /> { <br /> return "Simple-Filter"; <br /> } <br /> <br /> public void open() throws ResourceUnavailableException <br /> { <br /> <br /> } <br /> <br /> public void reset() <br /> { <br /> <br /> } <br /> /****** PlugIn ******/ <br /> <br /> /****** Controls ******/ <br /> public Object getControl(String controlType) <br /> { <br /> return null; <br /> } <br /> <br /> public Object[] getControls() <br /> { <br /> return null; <br /> } <br /> /****** Controls ******/ <br /> <br /> /****** Utility ******/ <br /> private Format matches(Format in, Format[] out) <br /> { <br /> if(in != null && out != null) <br /> { <br /> for(int i=0, cnt=out.length; i<cnt; i++) <br /> { <br /> if(in.matches(out[i])) <br /> return out[i]; <br /> } <br /> } <br /> <br /> return null; <br /> } <br /> /****** Utility ******/ <br />} <br /></code> Wed, 01 Nov 2006 06:00:23 GMT http://snippets.dzone.com/posts/show/2940 whitetiger () http://snippets.dzone.com/posts/show/2575 Buffers output and eliminates problem with spaces/line breaks at the beginning/end of files. Make sure to place ob_start(); before header(); is called. <br /><code> <br /><?php <br />ob_start(); <br /> <br />header("Location: somepage.php"); //Redirect <br /> <br />ob_end_flush(); <br />exit; <br />?> <br /></code> Sun, 10 Sep 2006 03:54:29 GMT http://snippets.dzone.com/posts/show/2575 dezmarie (Desirae Beberniss) http://snippets.dzone.com/posts/show/917 <code> <br />(require 'uniquify) <br />(setq uniquify-buffer-name-style 'post-forward-angle-brackets) <br /></code> Mon, 28 Nov 2005 01:02:14 GMT http://snippets.dzone.com/posts/show/917 kzys (KATO Kazuyoshi)