Java tutorial
//MessageSend_p.java //----------------------- //part of the AnomicHTTPD caching proxy //(C) by Michael Peter Christen; mc@yacy.net //first published on http://www.anomic.de //Frankfurt, Germany, 2004 //Last major change: 28.06.2003 //This program is free software; you can redistribute it and/or modify //it under the terms of the GNU General Public License as published by //the Free Software Foundation; either version 2 of the License, or //(at your option) any later version. //This program is distributed in the hope that it will be useful, //but WITHOUT ANY WARRANTY; without even the implied warranty of //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //GNU General Public License for more details. //You should have received a copy of the GNU General Public License //along with this program; if not, write to the Free Software //Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA //You must compile this file with //javac -classpath .:../Classes MessageSend_p.java //if the shell's current path is HTROOT import java.io.IOException; import java.net.MalformedURLException; import java.util.Date; import java.util.Map; import org.apache.http.entity.mime.content.ContentBody; import net.yacy.cora.date.GenericFormatter; import net.yacy.cora.document.encoding.ASCII; import net.yacy.cora.document.encoding.UTF8; import net.yacy.cora.document.id.MultiProtocolURL; import net.yacy.cora.protocol.RequestHeader; import net.yacy.kelondro.util.FileUtils; import net.yacy.peers.Network; import net.yacy.peers.Protocol; import net.yacy.peers.Protocol.Post; import net.yacy.peers.Seed; import net.yacy.peers.SeedDB; import net.yacy.search.Switchboard; import net.yacy.search.SwitchboardConstants; import net.yacy.server.serverObjects; import net.yacy.server.serverSwitch; import net.yacy.utils.crypt; public class MessageSend_p { public static String dateString(final Date date) { return GenericFormatter.SIMPLE_FORMATTER.format(date); } public static serverObjects respond(@SuppressWarnings("unused") final RequestHeader header, final serverObjects post, final serverSwitch env) { final Switchboard sb = (Switchboard) env; final serverObjects prop = new serverObjects(); if ((post == null) || (post.get("hash", "").isEmpty())) { prop.put("mode", "3"); return prop; } final String hash = post.get("hash", ""); String subject = post.get("subject", ""); String message = post.get("message", ""); if ((message.isEmpty()) || (post.containsKey("preview"))) { if (post.containsKey("preview")) { prop.put("mode", "1"); } else { prop.put("mode", "0"); } // open an editor page for the message // first ask if the other peer is online, and also what kind of document it accepts Seed seed = sb.peers.getConnected(ASCII.getBytes(hash)); if (seed != null) { for (final String ip : seed.getIPs()) { Map<String, String> result = null; MultiProtocolURL targetBaseURL = null; final String targetBaseURLStr = seed.getPublicURL(ip, sb.getConfigBool(SwitchboardConstants.NETWORK_PROTOCOL_HTTPS_PREFERRED, SwitchboardConstants.NETWORK_PROTOCOL_HTTPS_PREFERRED_DEFAULT)); try { targetBaseURL = new MultiProtocolURL(targetBaseURLStr); result = Protocol.permissionMessage(targetBaseURL, seed, sb); } catch (final MalformedURLException e) { Network.log.warn( "yacyClient.permissionMessage malformed target peer URL :" + targetBaseURLStr); } catch (final Exception e) { // most probably a network time-out exception Network.log.warn("yacyClient.permissionMessage error:" + e.getMessage()); if (targetBaseURL.isHTTPS()) { try { /* Request made over https : retry using http on the same IP as a fallback */ targetBaseURL = seed.getPublicMultiprotocolURL(ip, false); result = Protocol.permissionMessage(targetBaseURL, seed, sb); if (result != null) { /* Got a successfull result with http : mark now SSl as not available ont the target peer */ seed.setFlagSSLAvailable(false); sb.peers.updateConnected(seed); } } catch (final IOException e2) { Network.log.warn("yacyClient.postMessage error:" + e2.getMessage()); } } } //System.out.println("DEBUG: permission request result = " + result.toString()); String peerName; Seed targetPeer = null; if (hash.equals(sb.peers.mySeed().hash)) { peerName = sb.peers.mySeed().get(Seed.NAME, "nameless"); } else { targetPeer = sb.peers.getConnected(hash); if (targetPeer == null) { peerName = "nameless"; } else { peerName = targetPeer.get(Seed.NAME, "nameless"); } } prop.putXML("mode_permission_peerName", peerName); final String response = (result == null) ? null : result.get("response"); if (response == null || result == null) { // we don't have permission or other peer does not exist prop.put("mode_permission", "0"); if (targetPeer != null) { sb.peers.peerActions.interfaceDeparture(targetPeer, ip); } } else { prop.put("mode_permission", "1"); // write input form try { final int messagesize = Integer.parseInt(result.get("messagesize")); final int attachmentsize = Integer.parseInt(result.get("attachmentsize")); prop.putXML("mode_permission_response", response); prop.put("mode_permission_messagesize", messagesize); prop.put("mode_permission_attachmentsize", attachmentsize); prop.putXML("mode_permission_subject", subject); prop.putXML("mode_permission_message", message); prop.putHTML("mode_permission_hash", hash); if (post.containsKey("preview")) { prop.putWiki("mode_permission_previewmessage", message); } } catch (final NumberFormatException e) { // "unresolved pattern", the remote peer is alive but had an exception prop.put("mode_permission", "2"); } } } } else { // seed == null prop.put("mode_permission", "0"); prop.putXML("mode_permission_peerName", "a passive peer"); } } else { prop.put("mode", "2"); // send written message to peer try { prop.put("mode_status", "0"); int messagesize = post.getInt("messagesize", 0); //int attachmentsize = Integer.parseInt(post.get("attachmentsize", "0")); if (messagesize < 1000) messagesize = 1000; // debug if (subject.length() > 100) subject = subject.substring(0, 100); if (message.length() > messagesize) message = message.substring(0, messagesize); final byte[] mb = UTF8.getBytes(message); SeedDB seedDB = sb.peers; // prepare request final String salt = crypt.randomSalt(); // send request final Map<String, ContentBody> parts = Protocol.basicRequestParts(sb, hash, salt); parts.put("process", UTF8.StringBody("post")); parts.put("myseed", UTF8.StringBody(seedDB.mySeed().genSeedStr(salt))); parts.put("subject", UTF8.StringBody(subject)); parts.put("message", UTF8.StringBody(mb)); final Seed seed = seedDB.getConnected(ASCII.getBytes(hash)); boolean preferHttps = sb.getConfigBool(SwitchboardConstants.NETWORK_PROTOCOL_HTTPS_PREFERRED, SwitchboardConstants.NETWORK_PROTOCOL_HTTPS_PREFERRED_DEFAULT); Post post1 = null; for (final String ip : seed.getIPs()) { MultiProtocolURL targetBaseURL = null; try { targetBaseURL = seed.getPublicMultiprotocolURL(ip, preferHttps); post1 = new Post(targetBaseURL, seed.hash, "/yacy/message.html", parts, 20000); } catch (final MalformedURLException e) { Network.log.warn("yacyClient.postMessage malformed target peer URL when using ip " + ip); } catch (final IOException e) { Network.log.warn("yacyClient.postMessage error:" + e.getMessage()); if (targetBaseURL.isHTTPS()) { try { /* Request made over https : retry using http on the same IP as a fallback */ targetBaseURL = seed.getPublicMultiprotocolURL(ip, false); post1 = new Post(targetBaseURL, seed.hash, "/yacy/message.html", parts, 20000); if (post1 != null) { /* Got a successfull result with http : mark now SSl as not available ont the target peer */ seed.setFlagSSLAvailable(false); } } catch (final IOException e2) { Network.log.warn("yacyClient.postMessage error:" + e2.getMessage()); } } } if (post1 != null) { break; } seedDB.peerActions.interfaceDeparture(seed, ip); } final Map<String, String> result1 = post1 == null ? null : FileUtils.table(post1.getResult()); final Map<String, String> result = result1; if (result != null) { // message has been sent prop.put("mode_status_response", result.get("response")); } else { prop.put("mode_status", "1"); // "unresolved pattern", the remote peer is alive but had an exception prop.putXML("mode_status_message", message); } } catch (final NumberFormatException e) { prop.put("mode_status", "1"); // "unresolved pattern", the remote peer is alive but had an exception prop.putXML("mode_status_message", message); } } return prop; } }