X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.slc.support%2Fsrc%2Forg%2Fargeo%2Fslc%2Fjsch%2FScpFrom.java;fp=org.argeo.slc.support%2Fsrc%2Forg%2Fargeo%2Fslc%2Fjsch%2FScpFrom.java;h=3f83778a887d5c7d1714b322ae4586b48680cadd;hb=b9505fef5ba8186433e903e9de3c73c17bdf6562;hp=0000000000000000000000000000000000000000;hpb=04ef2e4533e909122a560a5cb6499fa62bac82ec;p=gpl%2Fargeo-slc.git

diff --git a/org.argeo.slc.support/src/org/argeo/slc/jsch/ScpFrom.java b/org.argeo.slc.support/src/org/argeo/slc/jsch/ScpFrom.java
new file mode 100644
index 000000000..3f83778a8
--- /dev/null
+++ b/org.argeo.slc.support/src/org/argeo/slc/jsch/ScpFrom.java
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.slc.jsch;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.slc.SlcException;
+import org.springframework.core.io.Resource;
+
+import com.jcraft.jsch.Channel;
+import com.jcraft.jsch.ChannelExec;
+import com.jcraft.jsch.Session;
+
+public class ScpFrom extends AbstractJschTask {
+	private final static Log log = LogFactory.getLog(ScpFrom.class);
+
+	private Resource localResource;
+	private String remotePath;
+	private Boolean mkdir = false;
+
+	public void run(Session session) {
+		if (localResource != null) {
+			File lFile;
+			try {
+				lFile = localResource.getFile();
+			} catch (IOException e) {
+				throw new SlcException("Cannot interpret resource "
+						+ localResource + " as file.", e);
+			}
+			downloadFile(session, lFile, remotePath);
+		}
+	}
+
+	protected void downloadFile(Session session, File localFile,
+			String remoteFile) {
+		OutputStream out = null;
+		OutputStream channelOut;
+		InputStream channelIn;
+		try {
+			// exec 'scp -f rfile' remotely
+			String command = "scp -f " + remoteFile;
+			Channel channel = session.openChannel("exec");
+			((ChannelExec) channel).setCommand(command);
+
+			// get I/O streams for remote scp
+			channelOut = channel.getOutputStream();
+			channelIn = channel.getInputStream();
+
+			channel.connect();
+
+			byte[] buf = new byte[1024];
+
+			// send '\0'
+			buf[0] = 0;
+			channelOut.write(buf, 0, 1);
+			channelOut.flush();
+
+			while (true) {
+				int c = checkAck(channelIn);
+				if (c != 'C') {
+					break;
+				}
+
+				// read '0644 '
+				channelIn.read(buf, 0, 5);
+
+				long filesize = 0L;
+				while (true) {
+					if (channelIn.read(buf, 0, 1) < 0) {
+						// error
+						break;
+					}
+					if (buf[0] == ' ')
+						break;
+					filesize = filesize * 10L + (long) (buf[0] - '0');
+				}
+
+				String remoteFileName = null;
+				for (int i = 0;; i++) {
+					channelIn.read(buf, i, 1);
+					if (buf[i] == (byte) 0x0a) {
+						remoteFileName = new String(buf, 0, i);
+						break;
+					}
+				}
+
+				// System.out.println("filesize="+filesize+", file="+file);
+
+				// send '\0'
+				buf[0] = 0;
+				channelOut.write(buf, 0, 1);
+				channelOut.flush();
+
+				// Create a s adirectory if it doesn't exists
+				if (!localFile.exists() && mkdir)
+					localFile.mkdirs();
+
+				// read a content of lfile
+				String localPath = localFile.isDirectory() ? localFile
+						.getPath()
+						+ File.separator + remoteFileName : localFile.getPath();
+
+				out = new FileOutputStream(localPath);
+				int foo;
+				while (true) {
+					if (buf.length < filesize)
+						foo = buf.length;
+					else
+						foo = (int) filesize;
+					foo = channelIn.read(buf, 0, foo);
+					if (foo < 0) {
+						// error
+						break;
+					}
+					out.write(buf, 0, foo);
+					filesize -= foo;
+					if (filesize == 0L)
+						break;
+				}
+
+				checkAck(channelIn);
+
+				// send '\0'
+				buf[0] = 0;
+				channelOut.write(buf, 0, 1);
+				channelOut.flush();
+
+				if (log.isDebugEnabled())
+					log.debug("Finished downloading " + remoteFile + " on "
+							+ getSshTarget() + " to " + localPath);
+			}
+
+			channel.disconnect();
+			// session.disconnect();
+		} catch (Exception e) {
+			throw new SlcException("Cannot download " + remoteFile + " to "
+					+ localFile, e);
+		} finally {
+			IOUtils.closeQuietly(out);
+		}
+	}
+
+	public void setLocalResource(Resource localFile) {
+		this.localResource = localFile;
+	}
+
+	public void setRemotePath(String remoteFile) {
+		this.remotePath = remoteFile;
+	}
+
+	public void setMkdir(Boolean mkdir) {
+		this.mkdir = mkdir;
+	}
+}