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redo hpacket part 2

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This commit is contained in:
sirjonasxx 2020-05-07 03:35:02 +02:00
parent bab0d11c59
commit 13b1bd055e
3 changed files with 51 additions and 65 deletions
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74
G-Earth/src/main/java/gearth/misc/packetrepresentation/PacketStructure.java
View File

@ -83,7 +83,6 @@ public class PacketStructure {
}
return hPacket;
}
public static String toString(byte[] packet) {
StringBuilder teststring = new StringBuilder();
for (byte x : packet) {
@ -96,37 +95,56 @@ public class PacketStructure {
return teststring.toString();
}
public static boolean structureEquals(HPacket packet, String structure) {
// generates an expression for a packet from a packet structure (ex. "i(isi(b))iBd")
public static String toExpressionFromGivenStructure(HPacket packet, String struct) {
int oldReadIndex = packet.getReadIndex();
packet.resetReadIndex();
StringBuilder builder = new StringBuilder();
builder.append("{l}{u:").append(packet.headerId()).append("}");
buildExpressionFromGivenStructure(packet, struct, 0, builder);
packet.setReadIndex(oldReadIndex);
return builder.toString();
}
private static void buildExpressionFromGivenStructure(HPacket p, String struct, int indexInGivenStruct, StringBuilder builder) {
int prevInt = 0;
while (indexInGivenStruct < struct.length()) {
char c = struct.charAt(indexInGivenStruct++);
if (c == '(') {
for (int i = 0; i < prevInt; i++) buildExpressionFromGivenStructure(p, struct, indexInGivenStruct, builder);
int skipping = 1;
while (skipping > 0) {
char c2 = struct.charAt(indexInGivenStruct++);
if (c2 == '(') skipping++;
else if (c2 == ')') skipping--;
}
}
else if (c == 'i') builder.append("{i:").append(prevInt = p.readInteger()).append('}');
else if (c == 's') builder.append("{s:\"").append(p.readString().replace("\"", "\\\"")).append("\"}");
else if (c == 'd') builder.append("{d:").append(p.readDouble()).append('}');
else if (c == 'b') builder.append("{b:").append(p.readByte()).append('}');
else if (c == 'B') builder.append("{b:").append(p.readBoolean()).append('}');
else return;
}
}
public static boolean structureEquals(HPacket packet, String struct) {
if (packet.isCorrupted()) return false;
int indexbuffer = packet.getReadIndex();
packet.setReadIndex(6);
packet.resetReadIndex();
String[] split = structure.split(",");
for (int i = 0; i < split.length; i++) {
String s = split[i];
if (s.equals("s")) {
if (packet.getReadIndex() + 2 > packet.getBytesLength() ||
packet.readUshort(packet.getReadIndex()) + 2 + packet.getReadIndex() > packet.getBytesLength()) return false;
packet.readString();
}
else if (s.equals("i")) {
if (packet.getReadIndex() + 4 > packet.getBytesLength()) return false;
packet.readInteger();
}
else if (s.equals("u")) {
if (packet.getReadIndex() + 2 > packet.getBytesLength()) return false;
packet.readUshort();
}
else if (s.equals("b")) {
if (packet.getReadIndex() + 1 > packet.getBytesLength()) return false;
packet.readBoolean();
}
boolean result;
try {
buildExpressionFromGivenStructure(packet, struct, 0, new StringBuilder());
result = packet.isEOF() == 1;
}
catch (Exception e) {
result = false;
}
boolean result = (packet.isEOF() == 1);
packet.setReadIndex(indexbuffer);
return result;
}
@ -138,6 +156,10 @@ public class PacketStructure {
HPacket p2 = fromString("{l}{u:4564}{i:3}{i:0}{s:\"hi\"}{i:0}{i:1}{s:\"how\"}{i:3}{b:1}{b:2}{b:3}{i:2}{s:\"r u\"}{i:1}{b:120}{i:2}{b:true}");
System.out.println(p2);
System.out.println(structureEquals(
new HPacket("{l}{u:5}{s:\"asdas\"}"),
"s"
));
}
}

40
G-Earth/src/main/java/gearth/protocol/HPacket.java
View File

@ -508,42 +508,6 @@ public class HPacket implements StringifyAble {
isEdited = edited;
}
private String toExpressionFromGivenStructure(String struct) {
int oldReadIndex = readIndex;
resetReadIndex();
StringBuilder builder = new StringBuilder();
builder.append("{l}{u:").append(headerId()).append("}");
buildExpressionFromGivenStructure(struct, 0, builder);
readIndex = oldReadIndex;
return builder.toString();
}
private void buildExpressionFromGivenStructure(String struct, int indexInGivenStruct, StringBuilder builder) {
int prevInt = 0;
while (indexInGivenStruct < struct.length()) {
char c = struct.charAt(indexInGivenStruct++);
if (c == '(') {
for (int i = 0; i < prevInt; i++) buildExpressionFromGivenStructure(struct, indexInGivenStruct, builder);
int skipping = 1;
while (skipping > 0) {
char c2 = struct.charAt(indexInGivenStruct++);
if (c2 == '(') skipping++;
else if (c2 == ')') skipping--;
}
}
else if (c == 'i') builder.append("{i:").append(prevInt = readInteger()).append('}');
else if (c == 's') builder.append("{s:\"").append(readString().replace("\"", "\\\"")).append("\"}");
else if (c == 'd') builder.append("{d:").append(readDouble()).append('}');
else if (c == 'b') builder.append("{b:").append(readByte()).append('}');
else if (c == 'B') builder.append("{b:").append(readBoolean()).append('}');
else return; // ')'
}
}
public String toExpression(HMessage.Direction direction) {
if (isCorrupted()) return "";
@ -551,7 +515,7 @@ public class HPacket implements StringifyAble {
if (HarbleAPIFetcher.HARBLEAPI != null &&
((msg = HarbleAPIFetcher.HARBLEAPI.getHarbleMessageFromHeaderId(direction, headerId())) != null)) {
if (msg.getStructure() != null) {
return toExpressionFromGivenStructure(msg.getStructure());
return PacketStructure.toExpressionFromGivenStructure(this, msg.getStructure());
}
}
return toExpression();
@ -852,7 +816,7 @@ public class HPacket implements StringifyAble {
public static void main(String[] args) {
HPacket packet = new HPacket("{l}{u:4564}{i:3}{i:0}{s:\"hi\"}{i:0}{i:1}{s:\"how\"}{i:3}{b:1}{b:2}{b:3}{i:2}{s:\"r u\"}{i:1}{b:120}{i:2}{b:true}{d:1.4}");
String str = packet.toExpressionFromGivenStructure("i(isi(b))iBd");
String str = PacketStructure.toExpressionFromGivenStructure(packet, "i(isi(b))iBd");
HPacket packetverify = new HPacket(str);

2
G-Earth/src/main/java/gearth/protocol/packethandler/IncomingPacketHandler.java
View File

@ -17,7 +17,7 @@ public class IncomingPacketHandler extends PacketHandler {
TrafficListener listener = new TrafficListener() {
@Override
public void onCapture(HMessage message) {
if (isDataStream && message.getPacket().structureEquals("s,b") && message.getPacket().length() > 500) {
if (isDataStream && message.getPacket().structureEquals("sb") && message.getPacket().length() > 500) {
((Observable<TrafficListener>)trafficObservables[0]).removeListener(this);
HPacket packet = message.getPacket();
packet.readString();