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master
vanitasvitae 3 years ago
commit
9f53052954
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10 changed files with 755 additions and 0 deletions
  1. +36
    -0
      .gitignore
  2. +38
    -0
      build.gradle
  3. BIN
      gradle/wrapper/gradle-wrapper.jar
  4. +172
    -0
      gradlew
  5. +84
    -0
      gradlew.bat
  6. +2
    -0
      settings.gradle
  7. +49
    -0
      src/main/java/de/vanitasvitae/sync_client/Client.java
  8. +161
    -0
      src/main/java/de/vanitasvitae/sync_client/Main.java
  9. +187
    -0
      src/main/java/de/vanitasvitae/sync_client/Master.java
  10. +26
    -0
      src/main/java/de/vanitasvitae/sync_client/Slave.java

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- 0
.gitignore View File

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# IntelliJ
.idea
.idea/*
*.iml
.idea/workspace.xml
# Mac OS X
.DS_Store
.classpath
.project
.settings
.gradle
gradle.properties
build/
core/build/
debug/build/
experimental/build/
extensions/build/
gradle/wrapper/gradle-wrapper.properties
store/
bin/
core/bin
debug/bin
experimental/bin
extensions/bin
target/
.metadata
clocc.ipr
clocc.iws

+ 38
- 0
build.gradle View File

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group 'de.vanitasvitae.xmpp_sync'
version '1.0-SNAPSHOT'
apply plugin: 'java'
apply plugin: 'idea'
sourceCompatibility = 1.8
repositories {
mavenLocal()
mavenCentral()
}
ext {
smackVersion="4.3.0-alpha1-SNAPSHOT"
}
dependencies {
testCompile group: 'junit', name: 'junit', version: '4.12'
compile "org.igniterealtime.smack:smack-java7:$smackVersion"
compile "org.igniterealtime.smack:smack-omemo-signal:$smackVersion"
compile "org.igniterealtime.smack:smack-resolver-dnsjava:$smackVersion"
compile "org.igniterealtime.smack:smack-tcp:$smackVersion"
compile 'commons-cli:commons-cli:1.4'
}
jar {
from(configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }) {
exclude "META-INF/*.SF"
exclude "META-INF/LICENSE"
}
manifest {
attributes(
'Main-Class': 'de.vanitasvitae.sync_client.Main'
)
}
}

BIN
gradle/wrapper/gradle-wrapper.jar View File


+ 172
- 0
gradlew View File

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#!/usr/bin/env sh
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS=""
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn ( ) {
echo "$*"
}
die ( ) {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=$((i+1))
done
case $i in
(0) set -- ;;
(1) set -- "$args0" ;;
(2) set -- "$args0" "$args1" ;;
(3) set -- "$args0" "$args1" "$args2" ;;
(4) set -- "$args0" "$args1" "$args2" "$args3" ;;
(5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
(6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
(7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
(8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
(9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save ( ) {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=$(save "$@")
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
cd "$(dirname "$0")"
fi
exec "$JAVACMD" "$@"

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gradlew.bat View File

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@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS=
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windows variants
if not "%OS%" == "Windows_NT" goto win9xME_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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settings.gradle View File

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rootProject.name = 'client'

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src/main/java/de/vanitasvitae/sync_client/Client.java View File

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package de.vanitasvitae.sync_client;
import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.HashSet;
import java.util.Set;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.roster.Roster;
import org.jivesoftware.smack.roster.SubscribeListener;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smackx.jingle.transport.jingle_ibb.JingleIBBTransport;
import org.jivesoftware.smackx.jingle.transport.jingle_ibb.JingleIBBTransportManager;
import org.jivesoftware.smackx.jingle.transport.jingle_s5b.JingleS5BTransportManager;
import org.jxmpp.jid.FullJid;
import org.jxmpp.stringprep.XmppStringprepException;
public class Client {
protected final XMPPConnection connection;
protected final Path root;
protected final Set<FullJid> remotes = new HashSet<>();
public Client(String username, String password, String directory) throws XmppStringprepException {
File dir = new File(directory);
if (!dir.exists()) {
throw new IllegalArgumentException("Directory " + directory + " does not exist!");
}
root = Paths.get(directory);
connection = new XMPPTCPConnection(username, password);
Roster.getInstanceFor(connection).addSubscribeListener((from, subscribeRequest) -> SubscribeListener.SubscribeAnswer.Approve);
JingleS5BTransportManager.getInstanceFor(connection);
JingleIBBTransportManager.getInstanceFor(connection);
}
public void login() throws InterruptedException, IOException, SmackException, XMPPException {
((XMPPTCPConnection) connection).connect().login();
}
public void addRemote(FullJid remote) {
remotes.add(remote);
}
}

+ 161
- 0
src/main/java/de/vanitasvitae/sync_client/Main.java View File

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package de.vanitasvitae.sync_client;
import java.io.IOException;
import java.util.List;
import java.util.Scanner;
import org.jivesoftware.smack.AbstractXMPPConnection;
import org.jivesoftware.smack.SmackConfiguration;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.roster.Roster;
import org.jivesoftware.smack.roster.RosterEntry;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.jxmpp.jid.BareJid;
import org.jxmpp.jid.FullJid;
import org.jxmpp.jid.impl.JidCreate;
import org.jxmpp.stringprep.XmppStringprepException;
public class Main {
private static Options prepareOptions() {
Options options = new Options();
Option username = Option.builder("u").longOpt("username").required().argName("user@server.tld").hasArg().desc("Barejid of the XMPP account").build();
Option password = Option.builder("p").longOpt("password").required().argName("swordfish").hasArg().desc("Password of the XMPP account").build();
Option debug = Option.builder("d").longOpt("debug").desc("Start in debug mode").build();
Option directory = Option.builder("D").longOpt("directory").hasArg().required().desc("Directory to sync").build();
Option master = Option.builder("m").longOpt("master").desc("Start in master mode").build();
options.addOption(username);
options.addOption(password);
options.addOption(debug);
options.addOption(directory);
options.addOption(master);
return options;
}
public static Slave slave(String username, String password, String dir) throws IOException, InterruptedException, XMPPException, SmackException {
return new Slave(username, password, dir);
}
public static Master master(String username, String password, String dir) throws IOException, InterruptedException, XMPPException, SmackException {
return new Master(username, password, dir);
}
public static void main(String[] args) throws Exception {
Options options = prepareOptions();
HelpFormatter formatter = new HelpFormatter();
CommandLineParser parser = new DefaultParser();
CommandLine cmd = null;
try {
cmd = parser.parse(options, args);
} catch (ParseException e) {
formatter.printHelp("client", options, true);
return;
}
String username = cmd.getOptionValue('u');
String password = cmd.getOptionValue('p');
String dir = cmd.getOptionValue('D');
if (cmd.hasOption('d')) {
SmackConfiguration.DEBUG = true;
}
Client client;
if (cmd.hasOption('m')) {
client = master(username, password, dir);
} else {
client = slave(username, password, dir);
}
client.login();
System.out.println("Ready!");
Scanner scanner = new Scanner(System.in);
outerloop: while (true) {
String line = scanner.nextLine();
if (line == null || line.isEmpty()) {
continue;
}
String[] split = line.split(" ");
if (split.length == 0) {
continue;
}
Roster roster = Roster.getInstanceFor(client.connection);
switch (split[0]) {
case "/add":
if (split.length != 2) {
System.out.println("Usage: /add user@server.tld");
for (RosterEntry r : roster.getEntries()) {
System.out.println(r.getJid());
}
continue outerloop;
}
try {
BareJid bareJid = getJid(split[1]);
roster.createEntry(getJid(split[1]), bareJid.getLocalpartOrNull().toString(), null);
} catch (XmppStringprepException e) {
System.out.println("Illegal BareJid.");
}
break;
case "/sync":
if (split.length != 2) {
System.out.println("Usage: /sync user@server.tld");
for (FullJid fullJid : client.remotes) {
System.out.println(fullJid.toString());
}
continue outerloop;
}
List<Presence> presences = roster.getPresences(getJid(split[1]));
if (presences.size() == 0) {
System.out.println("No device online!");
continue outerloop;
} else if (presences.size() == 1) {
client.addRemote(presences.get(0).getFrom().asFullJidOrThrow());
} else {
while (true) {
System.out.println("Please select a resource:");
for (int i = 0; i < presences.size(); i++) {
System.out.println(i + " " + presences.get(i).getFrom().asFullJidOrThrow().toString());
}
int selection = Integer.parseInt(scanner.nextLine());
if (selection < 0 || selection >= presences.size()) {
System.out.println("Invalid selection.");
continue;
}
client.addRemote(presences.get(selection).getFrom().asFullJidOrThrow());
continue outerloop;
}
}
break;
case "/quit":
((AbstractXMPPConnection) client.connection).disconnect(new Presence(Presence.Type.unavailable, "Shutdown", 100, Presence.Mode.away));
break outerloop;
}
}
scanner.close();
System.exit(0);
}
public static BareJid getJid(String string) throws XmppStringprepException {
return JidCreate.bareFrom(string);
}
}

+ 187
- 0
src/main/java/de/vanitasvitae/sync_client/Master.java View File

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package de.vanitasvitae.sync_client;
import static java.nio.file.LinkOption.NOFOLLOW_LINKS;
import static java.nio.file.StandardWatchEventKinds.ENTRY_CREATE;
import static java.nio.file.StandardWatchEventKinds.ENTRY_DELETE;
import static java.nio.file.StandardWatchEventKinds.ENTRY_MODIFY;
import static java.nio.file.StandardWatchEventKinds.OVERFLOW;
import java.io.File;
import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.WatchEvent;
import java.nio.file.WatchKey;
import java.nio.file.WatchService;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.HashMap;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.util.Async;
import org.jivesoftware.smackx.jft.JingleFileTransferManager;
import org.jxmpp.jid.FullJid;
public class Master extends Client {
private final WatchService fileWatcher;
private final HashMap<WatchKey, Path> fileKeys;
private boolean trace;
private JingleFileTransferManager jftm;
public Master(String username, String password, String directory) throws IOException, InterruptedException, SmackException, XMPPException {
super(username, password, directory);
fileWatcher = FileSystems.getDefault().newWatchService();
fileKeys = new HashMap<>();
registerFileWatcher();
jftm = JingleFileTransferManager.getInstanceFor(connection);
jftm.addIncomingFileOfferListener(offer -> {
try {
offer.accept(connection, new File(root.toFile(), offer.getFile().getName()));
} catch (InterruptedException | XMPPException.XMPPErrorException | SmackException.NoResponseException | SmackException.NotConnectedException e) {
e.printStackTrace();
}
});
}
private void registerFileWatcher() throws IOException {
Files.walkFileTree(root, new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
throws IOException
{
WatchKey key = dir.register(fileWatcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
if (trace) {
Path prev = fileKeys.get(key);
if (prev == null) {
System.out.format("register: %s\n", dir);
} else {
if (!dir.equals(prev)) {
System.out.format("update: %s -> %s\n", prev, dir);
}
}
}
fileKeys.put(key, dir);
return FileVisitResult.CONTINUE;
}
});
trace = true;
Async.go(() -> {
try {
processEvents();
} catch (InterruptedException | SmackException.NoResponseException | SmackException.NotConnectedException | XMPPException.XMPPErrorException | SmackException.FeatureNotSupportedException e) {
e.printStackTrace();
}
});
}
void processEvents() throws InterruptedException, SmackException.FeatureNotSupportedException, XMPPException.XMPPErrorException, SmackException.NotConnectedException, SmackException.NoResponseException {
for (;;) {
// wait for key to be signalled
WatchKey key;
try {
key = fileWatcher.take();
} catch (InterruptedException x) {
return;
}
Path dir = fileKeys.get(key);
if (dir == null) {
System.err.println("WatchKey not recognized!!");
continue;
}
for (WatchEvent<?> event: key.pollEvents()) {
WatchEvent.Kind kind = event.kind();
// TBD - provide example of how OVERFLOW event is handled
if (kind == OVERFLOW) {
continue;
}
// Context for directory entry event is the file name of entry
WatchEvent<Path> ev = (WatchEvent<Path>) event;
Path name = ev.context();
Path child = dir.resolve(name);
// print out event
System.out.format("%s: %s\n", event.kind().name(), child);
// if directory is created, and watching recursively, then
// register it and its sub-directories
if (kind == ENTRY_CREATE) {
try {
if (Files.isDirectory(child, NOFOLLOW_LINKS)) {
Files.walkFileTree(child, new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
throws IOException
{
WatchKey key = dir.register(fileWatcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
if (trace) {
Path prev = fileKeys.get(key);
if (prev == null) {
System.out.format("register: %s\n", dir);
} else {
if (!dir.equals(prev)) {
System.out.format("update: %s -> %s\n", prev, dir);
}
}
File[] files = dir.toFile().listFiles();
for (File f : files) {
if (f.isFile()) {
try {
sendFile(f);
} catch (InterruptedException | SmackException.FeatureNotSupportedException | SmackException.NoResponseException | SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
e.printStackTrace();
}
}
}
}
fileKeys.put(key, dir);
return FileVisitResult.CONTINUE;
}
});
} else if (child.toFile().isFile()) {
sendFile(child.toFile());
}
} catch (IOException x) {
}
} else if (kind == ENTRY_MODIFY && child.toFile().isFile()) {
sendFile(child.toFile());
}
}
// reset key and remove from set if directory no longer accessible
boolean valid = key.reset();
if (!valid) {
fileKeys.remove(key);
// all directories are inaccessible
if (fileKeys.isEmpty()) {
break;
}
}
}
}
public void sendFile(File file) throws InterruptedException, SmackException.FeatureNotSupportedException, XMPPException.XMPPErrorException, SmackException.NotConnectedException, SmackException.NoResponseException {
String fileName = file.getAbsolutePath();
String rootPath = root.toAbsolutePath().toString();
if (fileName.startsWith(rootPath)) {
fileName = fileName.substring(rootPath.length());
} else {
throw new AssertionError("Illegal path! " + fileName);
}
for (FullJid recipient : remotes) {
jftm.sendFile(file, fileName, recipient);
}
}
}

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src/main/java/de/vanitasvitae/sync_client/Slave.java View File

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package de.vanitasvitae.sync_client;
import java.io.File;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smackx.jft.JingleFileTransferManager;
import org.jxmpp.stringprep.XmppStringprepException;
public class Slave extends Client {
public Slave(String username, String password, String dir) throws XmppStringprepException {
super(username, password, dir);
JingleFileTransferManager jingleFileTransferManager = JingleFileTransferManager.getInstanceFor(connection);
jingleFileTransferManager.addIncomingFileOfferListener(offer -> {
try {
File target = new File(root.toFile(), offer.getFile().getName());
target.getParentFile().mkdirs();
offer.accept(connection, target);
} catch (InterruptedException | XMPPException.XMPPErrorException | SmackException.NoResponseException | SmackException.NotConnectedException e) {
e.printStackTrace();
}
});
}
}

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