@@ -62,9 +62,10 @@ import java.net.URL;
import java.net.URLConnection; import java.net.URLConnection;
import java.net.HttpURLConnection; import java.net.HttpURLConnection;
import java.util.Date; import java.util.Date;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.BuildException; import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project; import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.util.FileUtils;
/** /**
* Get a particular file from a URL source. * Get a particular file from a URL source.
@@ -75,6 +76,8 @@ import org.apache.tools.ant.Project;
* @author costin@dnt.ro * @author costin@dnt.ro
* @author gg@grtmail.com (Added Java 1.1 style HTTP basic auth) * @author gg@grtmail.com (Added Java 1.1 style HTTP basic auth)
* *
* @since Ant 1.1
*
* @ant.task category="network" * @ant.task category="network"
*/ */
public class Get extends Task { public class Get extends Task {
@@ -143,7 +146,8 @@ public class Get extends Task {
// check to see if sun's Base64 encoder is available. // check to see if sun's Base64 encoder is available.
try { try {
sun.misc.BASE64Encoder encoder = sun.misc.BASE64Encoder encoder =
(sun.misc.BASE64Encoder) Class.forName("sun.misc.BASE64Encoder").newInstance();
(sun.misc.BASE64Encoder)
Class.forName("sun.misc.BASE64Encoder").newInstance();
encoding = encoder.encode (up.getBytes()); encoding = encoder.encode (up.getBytes());
} }
@@ -151,7 +155,8 @@ public class Get extends Task {
Base64Converter encoder = new Base64Converter(); Base64Converter encoder = new Base64Converter();
encoding = encoder.encode(up.getBytes()); encoding = encoder.encode(up.getBytes());
} }
connection.setRequestProperty ("Authorization", "Basic " + encoding);
connection.setRequestProperty ("Authorization",
"Basic " + encoding);
} }
//connect to the remote site (may take some time) //connect to the remote site (may take some time)
@@ -159,24 +164,29 @@ public class Get extends Task {
//next test for a 304 result (HTTP only) //next test for a 304 result (HTTP only)
if(connection instanceof HttpURLConnection) { if(connection instanceof HttpURLConnection) {
HttpURLConnection httpConnection=(HttpURLConnection)connection; HttpURLConnection httpConnection=(HttpURLConnection)connection;
if(httpConnection.getResponseCode()==HttpURLConnection.HTTP_NOT_MODIFIED) {
//not modified so no file download. just return instead
//and trace out something so the user doesn't think that the
//download happened when it didnt
if(httpConnection.getResponseCode()
== HttpURLConnection.HTTP_NOT_MODIFIED) {
//not modified so no file download. just return
//instead and trace out something so the user
//doesn't think that the download happened when it
//didnt
log("Not modified - so not downloaded"); log("Not modified - so not downloaded");
return; return;
} }
// test for 401 result (HTTP only) // test for 401 result (HTTP only)
if(httpConnection.getResponseCode()==HttpURLConnection.HTTP_UNAUTHORIZED) {
if(httpConnection.getResponseCode()
== HttpURLConnection.HTTP_UNAUTHORIZED) {
log("Not authorized - check " + dest + " for details"); log("Not authorized - check " + dest + " for details");
return; return;
} }
} }
//REVISIT: at this point even non HTTP connections may support the if-modified-since
//behaviour -we just check the date of the content and skip the write if it is not
//newer. Some protocols (FTP) dont include dates, of course.
//REVISIT: at this point even non HTTP connections may
//support the if-modified-since behaviour -we just check
//the date of the content and skip the write if it is not
//newer. Some protocols (FTP) dont include dates, of
//course.
FileOutputStream fos = new FileOutputStream(dest); FileOutputStream fos = new FileOutputStream(dest);
@@ -204,26 +214,30 @@ public class Get extends Task {
while ((length = is.read(buffer)) >= 0) { while ((length = is.read(buffer)) >= 0) {
fos.write(buffer, 0, length); fos.write(buffer, 0, length);
if (verbose) { if (verbose) {
System.out.print(".");
System.out.print(".");
} }
} }
if(verbose) { if(verbose) {
System.out.println();
System.out.println();
} }
fos.close(); fos.close();
is.close(); is.close();
//if (and only if) the use file time option is set, then the
//saved file now has its timestamp set to that of the downloaded file
//if (and only if) the use file time option is set, then
//the saved file now has its timestamp set to that of the
//downloaded file
if(useTimestamp) { if(useTimestamp) {
long remoteTimestamp=connection.getLastModified(); long remoteTimestamp=connection.getLastModified();
if (verbose) { if (verbose) {
Date t=new Date(remoteTimestamp); Date t=new Date(remoteTimestamp);
log("last modified = "+t.toString() log("last modified = "+t.toString()
+((remoteTimestamp==0)?" - using current time instead":""));
+((remoteTimestamp==0)
? " - using current time instead"
: ""));
} }
if(remoteTimestamp!=0) { if(remoteTimestamp!=0) {
touchFile(dest,remoteTimestamp);
FileUtils.newFileUtils()
.setFileLastModified(dest, remoteTimestamp);
} }
} }
} catch (IOException ioe) { } catch (IOException ioe) {
@@ -235,34 +249,6 @@ public class Get extends Task {
} }
} }
/**
* set the timestamp of a named file to a specified time.
*
* @param filename
* @param time in milliseconds since the start of the era
* @return true if it succeeded. False means that this is a
* java1.1 system and that file times can not be set
*@exception BuildException Thrown in unrecoverable error. Likely
*this comes from file access failures.
*/
protected boolean touchFile(File file, long timemillis)
throws BuildException {
if (Project.getJavaVersion() != Project.JAVA_1_1) {
Touch touch = (Touch) project.createTask("touch");
touch.setOwningTarget(target);
touch.setTaskName(getTaskName());
touch.setLocation(getLocation());
touch.setFile(file);
touch.setMillis(timemillis);
touch.touch();
return true;
} else {
return false;
}
}
/** /**
* Set the URL. * Set the URL.
* *
@@ -302,16 +288,18 @@ public class Get extends Task {
/** /**
* Use timestamps, if set to "<CODE>true</CODE>". * Use timestamps, if set to "<CODE>true</CODE>".
* *
* <p>In this situation, the if-modified-since header is set so that the file is
* only fetched if it is newer than the local file (or there is no local file)
* This flag is only valid on HTTP connections, it is ignored in other cases.
* When the flag is set, the local copy of the downloaded file will also
* have its timestamp set to the remote file time.
* <br>
* Note that remote files of date 1/1/1970 (GMT) are treated as 'no timestamp', and
* web servers often serve files with a timestamp in the future by replacing their timestamp
* with that of the current time. Also, inter-computer clock differences can cause no end of
* grief.
* <p>In this situation, the if-modified-since header is set so
* that the file is only fetched if it is newer than the local
* file (or there is no local file) This flag is only valid on
* HTTP connections, it is ignored in other cases. When the flag
* is set, the local copy of the downloaded file will also have
* its timestamp set to the remote file time.</p>
*
* <p>Note that remote files of date 1/1/1970 (GMT) are treated as
* 'no timestamp', and web servers often serve files with a
* timestamp in the future by replacing their timestamp with that
* of the current time. Also, inter-computer clock differences can
* cause no end of grief.</p>
* @param v "true" to enable file time fetching * @param v "true" to enable file time fetching
*/ */
public void setUseTimestamp(boolean v) { public void setUseTimestamp(boolean v) {
@@ -327,7 +315,7 @@ public class Get extends Task {
* @param u username for authentication * @param u username for authentication
*/ */
public void setUsername(String u) { public void setUsername(String u) {
this.uname = u;
this.uname = u;
} }
/** /**
@@ -336,7 +324,7 @@ public class Get extends Task {
* @param p password for authentication * @param p password for authentication
*/ */
public void setPassword(String p) { public void setPassword(String p) {
this.pword = p;
this.pword = p;
} }
/********************************************************************* /*********************************************************************
@@ -346,7 +334,7 @@ public class Get extends Task {
* *
* @author * @author
* Unknown * Unknown
* @author
* @author
* <a HREF="gg@grtmail.com">Gautam Guliani</a> * <a HREF="gg@grtmail.com">Gautam Guliani</a>
*********************************************************************/ *********************************************************************/
Stefan Bodewig