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add group parser

This commit is contained in:
Ryan ZHAO 2020-02-12 17:08:27 +11:00
parent 1a156c604a
commit b5ce94c6ab
2 changed files with 35 additions and 0 deletions
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34
SignalServiceKit/src/Loki/Messaging/GroupParser.swift Normal file
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@ -0,0 +1,34 @@
@objc public final class GroupParser : NSObject {
private let data: Data
@objc public init(data: Data) {
self.data = data
}
@objc public func parseGroupModels() -> [TSGroupModel] {
var index = 0
var result: [TSGroupModel] = []
while index < data.endIndex {
var uncheckedSize: UInt32? = try? data[index..<(index+4)].withUnsafeBytes { $0.pointee }
if let size = uncheckedSize, size >= data.count, let intermediate = try? data[index..<(index+4)].reversed() {
uncheckedSize = Data(intermediate).withUnsafeBytes { $0.pointee }
}
guard let size = uncheckedSize, size < data.count else { break }
let sizeAsInt = Int(size)
index += 4
guard index + sizeAsInt < data.count else { break }
let protoAsData = data[index..<(index+sizeAsInt)]
guard let proto = try? SSKProtoGroupDetails.parseData(protoAsData) else { break }
index += sizeAsInt
var groupModel = TSGroupModel.init(title: proto.name,
memberIds: proto.members,
image: nil,
groupId: proto.id,
groupType: GroupType.closedGroup,
adminIds: proto.admins)
result.append(groupModel)
}
return result
}
}

1
SignalServiceKit/src/Messages/OWSMessageManager.m
View File

@ -1107,6 +1107,7 @@ NS_ASSUME_NONNULL_BEGIN
OWSLogInfo(@"[Loki] Received group sync message.");
NSData *data = syncMessage.groups.data;
// TODO: decode the data and handle the group info
GroupParser *parser = [[GroupParser alloc] initWithData:data];
}
} else {
OWSLogWarn(@"Ignoring unsupported sync message.");