mirror of
https://github.com/vishalxl/nostr_console.git
synced 2025-05-12 13:20:11 +02:00
32bc7d2bc0
also internally improved logic that encrypted channels internal structures are created by first looking at kind 104 (secret kind id) mentioned version 0.1.9-beta
1830 lines
61 KiB
Dart
1830 lines
61 KiB
Dart
import 'dart:io';
|
|
import 'dart:convert';
|
|
import 'dart:math';
|
|
import 'package:bip340/bip340.dart';
|
|
import 'package:intl/intl.dart';
|
|
import 'package:nostr_console/tree_ds.dart';
|
|
import 'package:translator/translator.dart';
|
|
import 'package:crypto/crypto.dart';
|
|
import 'package:nostr_console/settings.dart';
|
|
import "dart:typed_data";
|
|
import 'dart:convert' as convert;
|
|
import "package:pointycastle/export.dart";
|
|
import 'package:kepler/kepler.dart';
|
|
import 'package:http/http.dart' as http;
|
|
|
|
|
|
String getStrInColor(String s, String commentColor) => stdout.supportsAnsiEscapes ?"$commentColor$s$gColorEndMarker":s;
|
|
void printInColor(String s, String commentColor) => stdout.supportsAnsiEscapes ?stdout.write("$commentColor$s$gColorEndMarker"):stdout.write(s);
|
|
void printWarning(String s) => stdout.supportsAnsiEscapes ?stdout.write("$gWarningColor$s$gColorEndMarker\n"):stdout.write("$s\n");
|
|
|
|
// translate
|
|
GoogleTranslator? translator; // initialized in main when argument given
|
|
|
|
const int gNumTranslateDays = 2;// translate for this number of days
|
|
bool gTranslate = false; // translate flag
|
|
|
|
List<String> nip08PlaceHolders = ["#[0]", "#[1]", "#[2]", "#[3]", "#[4]", "#[5]", "#[6]", "#[7]", "#[8]", "#[9]" ];
|
|
|
|
// Structure to store kind 0 event meta data, and kind 3 meta data for each user. Will have info from latest
|
|
// kind 0 event and/or kind 3 event, both with their own time stamps.
|
|
class UserNameInfo {
|
|
int? createdAt;
|
|
String? name, about, picture;
|
|
int? createdAtKind3;
|
|
Event ?latestContactEvent;
|
|
bool nip05Verified;
|
|
String nip05Id;
|
|
UserNameInfo(this.createdAt, this.name, this.about, this.picture, this.latestContactEvent, [this.createdAtKind3 = null, this.nip05Verified = false, this.nip05Id = ""]);
|
|
}
|
|
|
|
/*
|
|
* global user names from kind 0 events, mapped from public key to a 3 element array of [name, about, picture]
|
|
* JSON object {name: <username>, about: <string>, picture: <url, string>}
|
|
* only has info from latest kind 0 event
|
|
*/
|
|
Map<String, UserNameInfo> gKindONames = {};
|
|
|
|
// global reactions entry. Map of form <id of event reacted to, List of Reactors>
|
|
// reach Reactor is a list of 2-elements ( first is pubkey of reactor event, second is comment)
|
|
Map< String, List<List<String>> > gReactions = {};
|
|
|
|
// global contact list of each user, including of the logged in user.
|
|
// maps from pubkey of a user, to the latest contact list of that user, which is the latest kind 3 message
|
|
// is updated as kind 3 events are received
|
|
Map< String, List<Contact>> gContactLists = {};
|
|
|
|
String myPadRight(String str, int width) {
|
|
String newStr = "";
|
|
|
|
if( str.length < width) {
|
|
newStr = str.padRight(width);
|
|
} else {
|
|
newStr = str.substring(0, width);
|
|
}
|
|
return newStr;
|
|
}
|
|
|
|
// returns tags as string that can be used to calculate event has. called from EventData constructor
|
|
String getStrTagsFromJson(dynamic json) {
|
|
String str = "";
|
|
|
|
int i = 0;
|
|
for( dynamic tag in json ) {
|
|
if( i != 0) {
|
|
str += ",";
|
|
}
|
|
|
|
str += "[";
|
|
int j = 0;
|
|
for(dynamic element in tag) {
|
|
if( j != 0) {
|
|
str += ",";
|
|
}
|
|
str += "\"${element.toString()}\"";
|
|
j++;
|
|
}
|
|
str += "]";
|
|
i++;
|
|
}
|
|
return str;
|
|
}
|
|
|
|
bool verifyEvent(dynamic json) {
|
|
return true;
|
|
|
|
gSpecificDebug = 0;
|
|
if(gSpecificDebug > 0) print("----\nIn verify event:");
|
|
String createdAt = json['created_at'].toString();
|
|
|
|
String strTags = getStrTagsFromJson(json['tags']);
|
|
|
|
//print("strTags = $strTags");
|
|
|
|
String id = json['id'];
|
|
String eventPubkey = json['pubkey'];
|
|
String strKind = json['kind'].toString();
|
|
String content = json['content'];
|
|
content = unEscapeChars( content);
|
|
String eventSig = json['sig'];
|
|
|
|
|
|
if( false) {
|
|
String calculatedId = getShaId(eventPubkey, createdAt.toString(), strKind, strTags, content);
|
|
bool verified = true;//verify( eventPubkey, calculatedId, eventSig);
|
|
|
|
if( !verified && !eventPubkey.startsWith("00")) {
|
|
if(gSpecificDebug > 0) printWarning("\nwrong sig event\nevent sig = $eventSig\nevent id = $id\ncalculated id = $calculatedId " );
|
|
if(gSpecificDebug > 0) print("Event: kind = $strKind\n");
|
|
//getShaId(eventPubkey, createdAt.toString(), strKind, strTags, content);
|
|
//print("$json");
|
|
//throw Exception();
|
|
} else {
|
|
if(gSpecificDebug > 0) printInColor("\nverified correct sig for event id $id\n", gCommentColor);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
class EventData {
|
|
String id;
|
|
String pubkey;
|
|
int createdAt;
|
|
int kind;
|
|
String content;
|
|
List<List<String>> eTags;// e tags
|
|
List<String> pTags;// list of p tags for kind:1
|
|
List<List<String>> tags;
|
|
bool isNotification; // whether its to be highlighted using highlight color
|
|
String evaluatedContent; // content which has mentions expanded, and which has been translated
|
|
Set<String> newLikes; // used for notifications, are colored as notifications and then reset
|
|
|
|
List<Contact> contactList = []; // used for kind:3 events, which is contact list event
|
|
|
|
bool isHidden; // hidden by sending a reaction kind 7 event to this event, by the logged in user
|
|
bool isDeleted; // deleted by kind 5 event
|
|
|
|
|
|
EventData(this.id, this.pubkey, this.createdAt, this.kind, this.content,
|
|
this.eTags, this.pTags, this.contactList,this.tags, this.newLikes,
|
|
{
|
|
this.isNotification = false, this.evaluatedContent = "", this.isHidden = false, this.isDeleted = false
|
|
});
|
|
|
|
|
|
// returns the immediate kind 1 parent
|
|
String getParent(Map<String, Tree> allEventsMap) {
|
|
|
|
if( eTags.isNotEmpty) {
|
|
|
|
int numRoot = 0, numReply = 0;
|
|
|
|
String rootId = "", replyId = "";
|
|
for( int i = 0; i < eTags.length; i++) {
|
|
String eventId = eTags[i][0];
|
|
if( eTags[i].length >= 3) {
|
|
if( eTags[i][2].toLowerCase() == "root") {
|
|
numRoot++;
|
|
rootId = eventId;
|
|
} else {
|
|
if( eTags[i][2].toLowerCase() == "reply") {
|
|
numReply++;
|
|
replyId = eventId;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if( replyId.length > 0) {
|
|
if( numReply == 1) {
|
|
return replyId;
|
|
} else {
|
|
// if there are multiply reply's we can't tell which is which, so we return the one at top
|
|
if( replyId.length > 0) {
|
|
return replyId;
|
|
} else {
|
|
if( rootId.length > 0) {
|
|
return rootId;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if( rootId.length > 0) {
|
|
//printWarning("returning root id. no reply id found.");
|
|
return rootId;
|
|
}
|
|
}
|
|
|
|
|
|
// if reply/root tags don't work, then try to look for parent tag with the deprecated logic from NIP-10
|
|
if( gDebug > 0) log.info("using deprecated logic of nip10 for event id : $id");
|
|
for( int i = tags.length - 1; i >= 0; i--) {
|
|
if( tags[i][0] == "e") {
|
|
String eventId = tags[i][1];
|
|
|
|
// ignore this e tag if its mentioned in the body of the event
|
|
String placeholder = nip08PlaceHolders[i];
|
|
if( content.contains(placeholder)) {
|
|
continue;
|
|
}
|
|
|
|
if( allEventsMap[eventId]?.event.eventData.kind == 1) {
|
|
String? parentId = allEventsMap[eventId]?.event.eventData.id;
|
|
if( parentId != null) {
|
|
return parentId;
|
|
}
|
|
} else {
|
|
// if first e tag ( from end, which is the immediate parent) does not exist in the store, then return that eventID still.
|
|
// Child comment would get a dummy parent, and called could then fetch that event
|
|
return eventId;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
return "";
|
|
}
|
|
|
|
|
|
factory EventData.fromJson(dynamic json) {
|
|
|
|
List<Contact> contactList = [];
|
|
|
|
List<List<String>> eTagsRead = [];
|
|
List<String> pTagsRead = [];
|
|
List<List<String>> tagsRead = [];
|
|
|
|
var jsonTags = json['tags'];
|
|
var numTags = jsonTags.length;
|
|
|
|
|
|
//print("\n----\nIn fromJson\n");
|
|
String sig = json['sig'];
|
|
if(sig.length == 128) {
|
|
//print("found sig == 128 bytes");
|
|
//if(json['id'] == "15dd45769dd0ccb9c4ca1c69fcd27011d53c4b95c8b7c786265bf7377bc7fdad") {
|
|
// printInColor("found 15dd45769dd0ccb9c4ca1c69fcd27011d53c4b95c8b7c786265bf7377bc7fdad sig ${json['sig']}", gCommentColor);
|
|
//}
|
|
|
|
try {
|
|
verifyEvent(json);
|
|
|
|
} on Exception catch(e) {
|
|
//printWarning("verify gave exception $e");
|
|
throw Exception("in Event constructor: sig verify gave exception");
|
|
}
|
|
|
|
}
|
|
|
|
// NIP 02: if the event is a contact list type, then populate contactList
|
|
if(json['kind'] == 3) {
|
|
for( int i = 0; i < numTags; i++) {
|
|
var tag = jsonTags[i];
|
|
if( tag.length < 2) {
|
|
if( gDebug > 0) print("In event fromjson: invalid p tag of size 1");
|
|
continue;
|
|
}
|
|
|
|
String server = defaultServerUrl;
|
|
if( tag.length >=3 ) {
|
|
server = tag[2].toString();
|
|
if( server == 'wss://nostr.rocks' || server == "wss://nostr.bitcoiner.social") {
|
|
server = defaultServerUrl;
|
|
}
|
|
}
|
|
|
|
if( tag[0] == "p" && tag[1].length == 64) {
|
|
Contact c = Contact(tag[1] as String, server);
|
|
contactList.add(c);
|
|
}
|
|
}
|
|
} else {
|
|
int eKind = json['kind'];
|
|
if ( eKind == 1 || eKind == 7 || eKind == 42 || eKind == 5 || eKind == 4 || eKind == 140 || eKind == 141 || eKind == 142 || eKind == gSecretMessageKind) {
|
|
for( int i = 0; i < numTags; i++) {
|
|
var tag = jsonTags[i];
|
|
|
|
if( tag.isEmpty) {
|
|
continue;
|
|
}
|
|
if( tag[0] == "e") {
|
|
List<String> listTag = [];
|
|
for(int i = 1; i < tag.length; i ++) {
|
|
listTag.add(tag[i]);
|
|
}
|
|
eTagsRead.add(listTag);
|
|
} else {
|
|
if( tag[0] == "p") {
|
|
pTagsRead.add(tag[1]);
|
|
}
|
|
}
|
|
List<String> t = [];
|
|
t.add(tag[0]);
|
|
t.add(tag[1]);
|
|
tagsRead.add(t);
|
|
|
|
// TODO add other tags
|
|
}
|
|
}
|
|
}
|
|
|
|
if( gDebug > 0 && json['id'] == gCheckEventId) {
|
|
print("\n----------------------------------------Creating EventData with content: ${json['content']}");
|
|
print("In Event fromJson: got message: $gCheckEventId");
|
|
}
|
|
|
|
return EventData(json['id'] as String, json['pubkey'] as String,
|
|
json['created_at'] as int, json['kind'] as int,
|
|
json['content'].trim() as String,
|
|
eTagsRead, pTagsRead,
|
|
contactList, tagsRead,
|
|
{});
|
|
}
|
|
|
|
String expandMentions(String content, Map<String, Tree> tempChildEventsMap) {
|
|
if( id == gCheckEventId) {
|
|
printInColor("in expandMentions: decoding $gCheckEventId\n", redColor);
|
|
}
|
|
|
|
if( tags.isEmpty) {
|
|
return content;
|
|
}
|
|
|
|
// just check if there is any square bracket in comment, if not we return
|
|
String squareBracketStart = "[", squareBracketEnd = "]";
|
|
if( !content.contains(squareBracketStart) || !content.contains(squareBracketEnd) ) {
|
|
return content;
|
|
}
|
|
|
|
// replace the patterns
|
|
//print("in main body of expandmentions");
|
|
for(int i = 0; i < nip08PlaceHolders.length && i < tags.length; i++) {
|
|
int index = -1;
|
|
Pattern p = nip08PlaceHolders[i];
|
|
if( (index = content.indexOf(p)) != -1 ) {
|
|
String mentionedId = tags[i][1];
|
|
if( tags[i].length >= 2) {
|
|
if( gKindONames.containsKey(mentionedId)) {
|
|
String author = getAuthorName(mentionedId);
|
|
content = "${content.substring(0, index)}@$author${content.substring(index + 4)}";
|
|
} else {
|
|
EventData? eventData = tempChildEventsMap[mentionedId]?.event.eventData??null;
|
|
if( eventData != null) {
|
|
String quotedAuthor = getAuthorName(eventData.pubkey);
|
|
String prefixId = mentionedId.substring(0, 3);
|
|
String quote = "<Quoted event id '$prefixId' by $quotedAuthor: \"${eventData.evaluatedContent}\">";
|
|
content = "${content.substring(0, index)}$quote${content.substring(index + 4)}";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return content;
|
|
}
|
|
|
|
// is called only once for each event received ( or read from file)
|
|
void translateAndExpandMentions(Map<String, Tree> tempChildEventsMap) {
|
|
if( id == gCheckEventId) {
|
|
//printInColor("in translateAndExpandMentions: decoding $gCheckEventId\n", redColor);
|
|
}
|
|
|
|
if (content == "" || evaluatedContent != "") {
|
|
if( id == gCheckEventId) {
|
|
//printInColor("in translateAndExpandMentions: returning \n", redColor);
|
|
}
|
|
return;
|
|
}
|
|
|
|
switch(kind) {
|
|
case 1:
|
|
case 42:
|
|
evaluatedContent = expandMentions(content, tempChildEventsMap);
|
|
if( translator != null && gTranslate && !evaluatedContent.isEnglish()) {
|
|
if( gDebug > 0) print("found that this comment is non-English: $evaluatedContent");
|
|
|
|
// only translate for latest events
|
|
if( DateTime.fromMillisecondsSinceEpoch(createdAt *1000).compareTo( DateTime.now().subtract(Duration(days:gNumTranslateDays)) ) > 0 ) {
|
|
if( gDebug > 0) print("Sending google request: translating $content");
|
|
if( translator != null) {
|
|
try {
|
|
translator?.translate(content, to: 'en')
|
|
.then( (result) => { evaluatedContent = "$evaluatedContent\n\nTranslation: ${result.toString()}" , if( gDebug > 0) print("Google translate returned successfully for one call.")} )
|
|
.onError((error, stackTrace) {
|
|
if( gDebug > 0) print("Translate error = $error\n for content = $content\n");
|
|
return {} ;
|
|
}
|
|
);
|
|
} on Exception catch(err) {
|
|
if( gDebug >= 0) print("Info: Error in trying to use google translate: $err");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
} // end switch
|
|
return;
|
|
} // end translateAndExpandMentions
|
|
|
|
// is called only once for each event received ( or read from file)
|
|
String? TranslateAndDecryptSecretMessage(Map<String, Tree> tempChildEventsMap) {
|
|
if( id == gCheckEventId) {
|
|
//printInColor("in TranslateAndDecryptSecretMessage: decoding $gCheckEventId\n", redColor);
|
|
}
|
|
|
|
if (content == "" || evaluatedContent != "") {
|
|
if( id == gCheckEventId) {
|
|
//printInColor("in TranslateAndDecryptSecretMessage: returning \n", redColor);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
switch(kind) {
|
|
case gSecretMessageKind:
|
|
if( userPrivateKey == ""){ // cant process if private key not given
|
|
return null;
|
|
}
|
|
|
|
if(!isValidDirectMessage(this)) {
|
|
return null;
|
|
}
|
|
|
|
if( id == gCheckEventId) {
|
|
//printInColor("in translateAndExpandMensitons: gonna decrypt \n", redColor);
|
|
}
|
|
|
|
//log.info("decrypting a secret message");
|
|
|
|
String? decrypted = decryptDirectMessage();
|
|
if( decrypted != null) {
|
|
evaluatedContent = decrypted;
|
|
}
|
|
return id;
|
|
} // end switch
|
|
|
|
return null;
|
|
} // end TranslateAndDecryptSecretMessage
|
|
|
|
|
|
// is called only once for each event received ( or read from file)
|
|
void translateAndDecryptKind4(Map<String, Tree> tempChildEventsMap) {
|
|
if( id == gCheckEventId) {
|
|
printInColor("in translateAndDecryptKind4: decoding $gCheckEventId\n", redColor);
|
|
}
|
|
|
|
if (content == "" || evaluatedContent != "") {
|
|
if( id == gCheckEventId) {
|
|
printInColor("in translateAndDecryptKind4: returning \n", redColor);
|
|
}
|
|
return;
|
|
}
|
|
|
|
switch(kind) {
|
|
case 4:
|
|
if( userPrivateKey == ""){ // cant process if private key not given
|
|
break;
|
|
}
|
|
//if( pubkey == userPublicKey ) break; // crashes right now otherwise
|
|
if(!isValidDirectMessage(this)) {
|
|
break;
|
|
}
|
|
|
|
if( id == gCheckEventId) {
|
|
printInColor("in translateAndExpandMensitons: gonna decrypt \n", redColor);
|
|
}
|
|
|
|
//log.info("decrypting a message of kind 4");
|
|
|
|
String? decrypted = decryptDirectMessage();
|
|
if( decrypted != null) {
|
|
evaluatedContent = decrypted;
|
|
evaluatedContent = expandMentions(evaluatedContent, tempChildEventsMap);
|
|
}
|
|
//print("evaluatedContent: $evaluatedContent");
|
|
break;
|
|
} // end switch
|
|
} // end translateAndExpandMentions
|
|
|
|
|
|
// is called only once for each event received ( or read from file)
|
|
void translateAndDecrypt14x(List<String> secretMessageIds, List<Channel> encryptedChannels, Map<String, Tree> tempChildEventsMap) {
|
|
if( id == gCheckEventId) {
|
|
//printInColor("in translateAndExpand14x: decoding ee810ea73072af056cceaa6d051b4fcce60739247f7bcc752e72fa5defb64f09\n", redColor);
|
|
}
|
|
|
|
if (content == "" || evaluatedContent != "") {
|
|
if( id == gCheckEventId) {
|
|
//printInColor("in translateAndExpand14x: returning \n", redColor);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if( createdAt < getSecondsDaysAgo(1)) {
|
|
//print("old 142. not decrypting");
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
switch(kind) {
|
|
case 142:
|
|
//print("in translateAndDecrypt14x");
|
|
Channel? channel = getChannelForMessage( encryptedChannels, id);
|
|
if( channel == null) {
|
|
break;
|
|
}
|
|
|
|
if(!channel.participants.contains(userPublicKey)) {
|
|
break;
|
|
}
|
|
|
|
if(!channel.participants.contains(pubkey)) {
|
|
break;
|
|
}
|
|
|
|
String? decrypted = decryptEncryptedChannelMessage(secretMessageIds, tempChildEventsMap);
|
|
if( decrypted != null) {
|
|
//printWarning("Successfully decrypted kind 142: $id");
|
|
evaluatedContent = decrypted;
|
|
//print("in translateAndDecrypt14x: calling expandMentions");
|
|
evaluatedContent = expandMentions(evaluatedContent, tempChildEventsMap);
|
|
//print("content = $content");
|
|
//print(evaluatedContent);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
|
|
} // end switch
|
|
} // end translateAndExpand14x
|
|
|
|
|
|
String? decryptDirectMessage() {
|
|
int ivIndex = content.indexOf("?iv=");
|
|
if( ivIndex > 0) {
|
|
var iv = content.substring( ivIndex + 4, content.length);
|
|
var enc_str = content.substring(0, ivIndex);
|
|
|
|
String userKey = userPrivateKey ;
|
|
String otherUserPubKey = "02" + pubkey;
|
|
if( pubkey == userPublicKey) { // if user themselve is the sender change public key used to decrypt
|
|
userKey = userPrivateKey;
|
|
int numPtags = 0;
|
|
tags.forEach((tag) {
|
|
if(tag[0] == "p" ) {
|
|
otherUserPubKey = "02" + tag[1];
|
|
numPtags++;
|
|
}
|
|
});
|
|
// if there are more than one p tags, we don't know who its for
|
|
if( numPtags != 1) {
|
|
if( gDebug >= 0) printInColor(" in translateAndExpand: got event $id with number of p tags != one : $numPtags . not decrypting", redColor);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
var decrypted = myPrivateDecrypt( userKey, otherUserPubKey, enc_str, iv); // use bob's privatekey and alic's publickey means bob can read message from alic
|
|
return decrypted;
|
|
} else {
|
|
if(gDebug > 0) print("Invalid content for dm, could not get ivIndex: $content");
|
|
return null;
|
|
}
|
|
}
|
|
|
|
Channel? getChannelForMessage(List<Channel>? listChannel, String messageId) {
|
|
if( listChannel == null) {
|
|
return null;
|
|
}
|
|
for(int i = 0; i < listChannel.length; i++) {
|
|
if( listChannel[i].messageIds.contains(messageId)) {
|
|
return listChannel[i];
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
String? decryptEncryptedChannelMessage(List<String> secretMessageIds, Map<String, Tree> tempChildEventsMap) {
|
|
|
|
if( id == "865c9352de11a3959c06fce5350c5a1b9fa0475d3234078a1bb45d152b370f0b") { // known issue
|
|
|
|
//print("\n\ngoing to decrypt b1ab66ac50f00f3c3bbc91e5b9e03fc8e79e3fdb9f6d5c9ae9777aa6ca3020a2");
|
|
//print(channel.participants);
|
|
return null;
|
|
}
|
|
|
|
//printWarning("Going to decrypt 14x event id: $id");
|
|
|
|
//print("In decryptEncryptedChannelMessage: for event of kind 142 with event id = $id");
|
|
int ivIndex = content.indexOf("?iv=");
|
|
if( ivIndex == -1) {
|
|
return null;
|
|
}
|
|
var iv = content.substring( ivIndex + 4, content.length);
|
|
var enc_str = content.substring(0, ivIndex);
|
|
|
|
String channelId = getChannelIdForMessage();
|
|
//print("In decryptEncryptedChannelMessage: got channel id $channelId");
|
|
List<String> keys = [];
|
|
keys = getEncryptedChannelKeys(secretMessageIds, tempChildEventsMap, channelId);
|
|
|
|
if( keys.length != 2) {
|
|
print("Could not get keys for event id: $id and channelId: $channelId");
|
|
return null;
|
|
}
|
|
|
|
//print("\nevent id: $id");
|
|
//print(keys);
|
|
|
|
String priKey = keys[0];
|
|
String pubKey = "02" + keys[1];
|
|
|
|
var decrypted = myPrivateDecrypt( priKey, pubKey, enc_str, iv); // use bob's privatekey and alic's publickey means bob can read message from alic
|
|
//print("decrypted = |$decrypted|");
|
|
return decrypted;
|
|
}
|
|
|
|
// only applicable for kind 42/142 event; returns the channel 40/140 id of which the event is part of
|
|
String getChannelIdForMessage() {
|
|
if( kind != 42 && kind != 142 && kind!=141) {
|
|
return "";
|
|
}
|
|
//print("in getChannelIdForMessage tag length = ${tags.length}");
|
|
// get first e tag, which should be the channel of which this is part of
|
|
for( int i = 0; i < tags.length; i++) {
|
|
List tag = tags[i];
|
|
if( tag[0] == 'e') {
|
|
return tag[1];
|
|
}
|
|
}
|
|
return '';
|
|
}
|
|
|
|
// prints event data in the format that allows it to be shown in tree form by the Tree class
|
|
void printEventData(int depth, bool topPost, Map<String, Tree>? tempChildEventsMap, List<String>? secretMessageIds, List<Channel>? encryptedChannels) {
|
|
if( !(kind == 1 || kind == 4 || kind == 42)) {
|
|
return; // only print kind 1 and 42 and 4
|
|
}
|
|
|
|
// will only do decryption if its not been decrypted yet by looking at 'evaluatedContent'
|
|
if( tempChildEventsMap != null )
|
|
if(kind == 4)
|
|
translateAndDecryptKind4( tempChildEventsMap);
|
|
else if ([1, 42].contains(kind)) {
|
|
translateAndExpandMentions(tempChildEventsMap);
|
|
} else if ([142].contains(kind)) {
|
|
if( secretMessageIds != null && encryptedChannels != null) {
|
|
translateAndDecrypt14x( secretMessageIds, encryptedChannels, tempChildEventsMap);
|
|
}
|
|
}
|
|
|
|
|
|
int n = 4;
|
|
String maxN(String v) => v.length > n? v.substring(0,n) : v.substring(0, v.length);
|
|
|
|
String name = getAuthorName(pubkey);
|
|
String strDate = getPrintableDate(createdAt);
|
|
String tempEvaluatedContent = evaluatedContent;
|
|
String tempContent = content;
|
|
|
|
if( isHidden) {
|
|
name = "<hidden>";
|
|
strDate = "<hidden>";
|
|
tempEvaluatedContent = tempContent = "<You have hidden this post>";
|
|
}
|
|
|
|
// delete supercedes hidden
|
|
if( isDeleted) {
|
|
name = "<deleted>";
|
|
strDate = "<deleted>";
|
|
tempEvaluatedContent = tempContent = content; // content would be changed so show that
|
|
}
|
|
|
|
if( createdAt == 0) {
|
|
print("debug: createdAt == 0 for event $id $content");
|
|
}
|
|
|
|
String commentColor = "";
|
|
if( isNotification) {
|
|
commentColor = gNotificationColor;
|
|
isNotification = false;
|
|
} else {
|
|
commentColor = gCommentColor;
|
|
}
|
|
|
|
int tempEffectiveLen = name.length < gNameLengthInPost? name.length: gNameLengthInPost;
|
|
name = name.substring(0,tempEffectiveLen);
|
|
|
|
int effectiveNameFieldLen = gNameLengthInPost + 3; // get this before name is mangled by color
|
|
String nameColor = getNameColor(pubkey);
|
|
|
|
// pad name to left
|
|
name = name.padLeft(gNameLengthInPost);
|
|
name = name.substring(0, gNameLengthInPost);
|
|
name = getStrInColor(name, nameColor);
|
|
|
|
String strToPrint = "";
|
|
if(!topPost) {
|
|
strToPrint += "\n";
|
|
strToPrint += getDepthSpaces(depth);
|
|
strToPrint += " "; // in place of block for top posts
|
|
} else {
|
|
strToPrint += getDepthSpaces(depth);
|
|
strToPrint += "█";
|
|
}
|
|
|
|
strToPrint += "${name}: ";
|
|
const int typicalxLen = "|id: 82b5 , 12:04 AM Sep 19".length + 5; // not sure where 5 comes from
|
|
String idDateLikes = " |id: ${maxN(id)} , $strDate ${getReactionStr(depth)}" ;
|
|
idDateLikes = idDateLikes.padRight(typicalxLen);
|
|
|
|
String temp = tempEvaluatedContent==""?tempContent: tempEvaluatedContent;
|
|
String contentShifted = makeParagraphAtDepth( temp, gSpacesPerDepth * depth + effectiveNameFieldLen);
|
|
|
|
int maxLineLen = gTextWidth - gSpacesPerDepth * depth - effectiveNameFieldLen ;
|
|
int lastLineLen = contentShifted.length;
|
|
int i = 0;
|
|
|
|
contentShifted = contentShifted.trim();
|
|
|
|
// find the effective length of the last line of the content
|
|
for(i = contentShifted.length - 1; i >= 0; i-- ) {
|
|
if( contentShifted[i] == "\n") {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( i >= 0 && contentShifted[i] == "\n") {
|
|
lastLineLen = contentShifted.length - i;
|
|
}
|
|
|
|
// effective len of last line is used to calcluate where the idDateLikes str is affixed at the end
|
|
int effectiveLastLineLen = lastLineLen - gSpacesPerDepth * depth - effectiveNameFieldLen - gNumLeftMarginSpaces;
|
|
if( contentShifted.length <= maxLineLen )
|
|
effectiveLastLineLen = contentShifted.length;
|
|
|
|
// now actually find where the likesDates string goes
|
|
if( (gSpacesPerDepth * depth + effectiveNameFieldLen + effectiveLastLineLen + idDateLikes.length ) <= gTextWidth) {
|
|
idDateLikes = idDateLikes.padLeft((gTextWidth ) - (gSpacesPerDepth * depth + effectiveNameFieldLen + effectiveLastLineLen));
|
|
} else {
|
|
idDateLikes = "\n" + idDateLikes.padLeft(gNumLeftMarginSpaces + gTextWidth);
|
|
}
|
|
|
|
// print content and the dateslikes string
|
|
strToPrint += getStrInColor(contentShifted + idDateLikes + "\n", commentColor);
|
|
stdout.write(strToPrint);
|
|
}
|
|
|
|
String getAsLine(var tempChildEventsMap, List<String>? secretMessageIds, List<Channel>? encryptedChannels, {int len = 20}) {
|
|
|
|
// will only do decryption if its not been decrypted yet by looking at 'evaluatedContent'
|
|
if(kind == 4)
|
|
translateAndDecryptKind4( tempChildEventsMap);
|
|
else if ([1, 42].contains(kind)) {
|
|
translateAndExpandMentions(tempChildEventsMap);
|
|
} else if ([142].contains(kind)) {
|
|
if( tempChildEventsMap != null && secretMessageIds != null && encryptedChannels != null) {
|
|
translateAndDecrypt14x(secretMessageIds, encryptedChannels, tempChildEventsMap);
|
|
}
|
|
}
|
|
|
|
String contentToPrint = evaluatedContent.isEmpty? content: evaluatedContent;
|
|
if( len == 0 || len > contentToPrint.length) {
|
|
//len = contentToPrint.length;
|
|
}
|
|
|
|
|
|
contentToPrint = contentToPrint.replaceAll("\n", " ");
|
|
contentToPrint = contentToPrint.replaceAll("\r", " ");
|
|
contentToPrint = contentToPrint.replaceAll("\t", " ");
|
|
contentToPrint = contentToPrint.padRight(len).substring(0, len);
|
|
//contentToPrint = contentToPrint.padRight(len);
|
|
String strToPrint = '$contentToPrint - ${getAuthorName(pubkey).padLeft(12)}';
|
|
|
|
String paddedStrToPrint = strToPrint;
|
|
|
|
if( isNotification) {
|
|
paddedStrToPrint = "$gNotificationColor$paddedStrToPrint$gColorEndMarker";
|
|
isNotification = false;
|
|
}
|
|
//print("returning $paddedStrToPrint");
|
|
return paddedStrToPrint;
|
|
}
|
|
|
|
|
|
String getStrForChannel(int depth, var tempChildEventsMap, List<String>? secretMessageIds, List<Channel>? encryptedChannels) {
|
|
|
|
// will only do decryption if its not been decrypted yet by looking at 'evaluatedContent'
|
|
// will only do decryption if its not been decrypted yet by looking at 'evaluatedContent'
|
|
if(kind == 4)
|
|
translateAndDecryptKind4( tempChildEventsMap);
|
|
else if ([1, 42].contains(kind)) {
|
|
translateAndExpandMentions(tempChildEventsMap);
|
|
} else if ([142].contains(kind)) {
|
|
if( tempChildEventsMap != null && secretMessageIds != null && encryptedChannels != null) {
|
|
//print('decrypting 14x in getStrForChannel');
|
|
translateAndDecrypt14x(secretMessageIds, encryptedChannels, tempChildEventsMap);
|
|
}
|
|
}
|
|
|
|
String strToPrint = "";
|
|
String name = getAuthorName(pubkey);
|
|
String strDate = getPrintableDate(createdAt);
|
|
String tempEvaluatedContent = evaluatedContent;
|
|
String tempContent = evaluatedContent.isEmpty? content: evaluatedContent;
|
|
|
|
if( isHidden) {
|
|
name = strDate = "<hidden>";
|
|
tempEvaluatedContent = tempContent = "<You have hidden this post>";
|
|
}
|
|
|
|
// delete supercedes hidden
|
|
if( isDeleted) {
|
|
name = strDate = "<deleted>";
|
|
tempEvaluatedContent = tempContent = content; // content would be changed so show that
|
|
}
|
|
|
|
if( tempEvaluatedContent=="")
|
|
tempEvaluatedContent = tempContent;
|
|
|
|
const int nameWidthDepth = 16~/gSpacesPerDepth; // how wide name will be in depth spaces
|
|
const int timeWidthDepth = 18~/gSpacesPerDepth;
|
|
int nameWidth = gSpacesPerDepth * nameWidthDepth;
|
|
|
|
// get name in color and pad it too
|
|
String nameToPrint = name.padLeft(nameWidth).substring(0, nameWidth);
|
|
nameToPrint = getStrInColor(nameToPrint, getNameColor(pubkey));
|
|
|
|
String dateToPrint = strDate.padLeft(gSpacesPerDepth * timeWidthDepth).substring(0, gSpacesPerDepth * timeWidthDepth);
|
|
|
|
// depth above + ( depth numberof spaces = 1) + (depth of time = 2) + (depth of name = 3)
|
|
int contentDepth = depth + 1 + timeWidthDepth + nameWidthDepth;
|
|
int magicNumberDepth6 = 2; // magic number for gSpacesPerDepth == 6
|
|
int finalContentDepthInSpaces = gSpacesPerDepth * contentDepth + magicNumberDepth6;
|
|
int contentPlacementColumn = finalContentDepthInSpaces + gNumLeftMarginSpaces;
|
|
|
|
String contentShifted = makeParagraphAtDepth(tempEvaluatedContent, finalContentDepthInSpaces);
|
|
|
|
Event? replyToEvent = getReplyToEvent();
|
|
String strReplyTo = "";
|
|
if( replyToEvent != null) {
|
|
//print("in getStrForChannel: got replyTo id = ${replyToEvent.eventData.id}");
|
|
if( replyToEvent.eventData.kind == 1 || replyToEvent.eventData.kind == 42 || replyToEvent.eventData.kind == 142) { // make sure its a kind 1 or 40 message
|
|
if( replyToEvent.eventData.id != id) { // basic self test
|
|
strReplyTo = 'In reply to:"${replyToEvent.eventData.evaluatedContent}"';
|
|
strReplyTo = makeParagraphAtDepth(strReplyTo, finalContentDepthInSpaces + 6); // one extra for content
|
|
|
|
// add reply to string to end of the content. How it will show:
|
|
contentShifted += ( "\n" + getNumSpaces( contentPlacementColumn + gSpacesPerDepth) + strReplyTo);
|
|
}
|
|
}
|
|
} else {
|
|
//printWarning("no reply to event for event id $id");
|
|
}
|
|
|
|
String msgId = id.substring(0, 3).padLeft(gSpacesPerDepth~/2).padRight(gSpacesPerDepth) ;
|
|
|
|
if( isNotification) {
|
|
strToPrint = "$gNotificationColor${getDepthSpaces(depth-1)}$msgId $dateToPrint $nameToPrint: $gNotificationColor" + contentShifted + gColorEndMarker;
|
|
isNotification = false;
|
|
} else {
|
|
strToPrint = "${getDepthSpaces(depth-1)}$msgId $dateToPrint $nameToPrint: " + contentShifted;
|
|
}
|
|
return strToPrint;
|
|
}
|
|
|
|
// looks up global map of reactions, if this event has any reactions, and then prints the reactions
|
|
// in appropriate color( in case one is a notification, which is stored in member variable)
|
|
String getReactionStr(int depth) {
|
|
String reactorNames = "";
|
|
|
|
if( isHidden || isDeleted) {
|
|
return "";
|
|
}
|
|
|
|
if( gReactions.containsKey(id)) {
|
|
reactorNames = "Likes: ";
|
|
int numReactions = gReactions[id]?.length??0;
|
|
List<List<String>> reactors = gReactions[id]??[];
|
|
bool firstEntry = true;
|
|
for( int i = 0; i <numReactions; i++) {
|
|
|
|
String comma = (firstEntry)?"":", ";
|
|
|
|
String reactorId = reactors[i][0];
|
|
if( newLikes.contains(reactorId) && reactors[i][1] == "+") {
|
|
// this is a notifications, print it and then later empty newLikes
|
|
reactorNames += comma + gNotificationColor + getAuthorName(reactorId) + gColorEndMarker;
|
|
firstEntry = false;
|
|
} else {
|
|
// this is normal printing of the reaction. only print for + for now
|
|
if( reactors[i][1] == "+")
|
|
reactorNames += comma + getAuthorName(reactorId);
|
|
firstEntry = false;
|
|
}
|
|
} // end for
|
|
newLikes.clear();
|
|
reactorNames += "";
|
|
}
|
|
return reactorNames;
|
|
}
|
|
|
|
// returns the last e tag as reply to event for kind 42 and 142 events
|
|
Event? getReplyToEvent() {
|
|
for(int i = tags.length - 1; i >= 0; i--) {
|
|
List tag = tags[i];
|
|
if( tag[0] == 'e') {
|
|
String replyToEventId = tag[1];
|
|
Event? eventInReplyTo = (gStore?.allChildEventsMap[replyToEventId]?.event)??null;
|
|
if( eventInReplyTo != null) {
|
|
if ( [1,42,142].contains( eventInReplyTo.eventData.kind)) {
|
|
return eventInReplyTo;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
} // end getReplyToEvent()
|
|
}
|
|
|
|
// This is mostly a placeholder for EventData. TODO combine both?
|
|
class Event {
|
|
String event;
|
|
String id;
|
|
EventData eventData;
|
|
String originalJson;
|
|
List<String> seenOnRelays;
|
|
bool readFromFile;
|
|
|
|
Event(this.event, this.id, this.eventData, this.seenOnRelays, this.originalJson, [this.readFromFile = false]);
|
|
|
|
@override
|
|
bool operator ==( other) {
|
|
return (other is Event) && eventData.id == other.eventData.id;
|
|
}
|
|
|
|
factory Event.fromJson(String d, String relay, [bool fromFile = false]) {
|
|
try {
|
|
dynamic json = jsonDecode(d);
|
|
|
|
if( json.length < 3) {
|
|
String e = "";
|
|
e = json.length > 1? json[0]: "";
|
|
if( gDebug > 0) {
|
|
print("Could not create event. json.length = ${json.length} string d= $d $e");
|
|
}
|
|
throw Exception("Event json has less than 3 elements");
|
|
}
|
|
|
|
EventData newEventData = EventData.fromJson(json[2]);
|
|
if( !fromFile)
|
|
newEventData.isNotification = true;
|
|
return Event(json[0] as String, json[1] as String, newEventData, [relay], d, fromFile );
|
|
} on Exception catch(e) {
|
|
if( gDebug> 0) {
|
|
print("Could not create event. $e");
|
|
print("problem str: $d\n");
|
|
}
|
|
//print("Caught an exception in Event.fromJson");
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
void printEvent(int depth, bool topPost) {
|
|
eventData.printEventData(depth, topPost, null, null, null);
|
|
//stdout.write("\n$originalJson --------------------------------\n\n");
|
|
}
|
|
|
|
@override
|
|
String toString() {
|
|
return '$eventData Seen on: ${seenOnRelays[0]}\n';
|
|
}
|
|
}
|
|
|
|
void addToHistogram(Map<String, int> histogram, List<String> pTags) {
|
|
Set tempPtags = {};
|
|
pTags.retainWhere((x) => tempPtags.add(x));
|
|
|
|
for(int i = 0; i < pTags.length; i++ ) {
|
|
String pTag = pTags[i];
|
|
if( histogram.containsKey(pTag)) {
|
|
int? val = histogram[pTag];
|
|
if( val != null) {
|
|
histogram[pTag] = ++val;
|
|
} else {
|
|
}
|
|
} else {
|
|
histogram[pTag] = 1;
|
|
}
|
|
}
|
|
//return histogram;
|
|
}
|
|
|
|
class HistogramEntry {
|
|
String str;
|
|
int count;
|
|
HistogramEntry(this.str, this.count);
|
|
static int histogramSorter(HistogramEntry a, HistogramEntry b) {
|
|
if( a.count < b.count ) {
|
|
return 1;
|
|
} if( a.count == b.count ) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// return the numMostFrequent number of most frequent p tags ( user pubkeys) in the given events
|
|
List<String> getpTags(Set<Event> events, int numMostFrequent) {
|
|
List<HistogramEntry> listHistogram = [];
|
|
Map<String, int> histogramMap = {};
|
|
for(var event in events) {
|
|
addToHistogram(histogramMap, event.eventData.pTags);
|
|
}
|
|
|
|
histogramMap.forEach((key, value) {listHistogram.add(HistogramEntry(key, value));/* print("added to list of histogramEntry $key $value"); */});
|
|
listHistogram.sort(HistogramEntry.histogramSorter);
|
|
List<String> ptags = [];
|
|
for( int i = 0; i < listHistogram.length && i < numMostFrequent; i++ ) {
|
|
ptags.add(listHistogram[i].str);
|
|
}
|
|
|
|
return ptags;
|
|
}
|
|
|
|
// From the list of events provided, lookup the lastst contact information for the given user/pubkey
|
|
Event? getContactEvent(String pubkey) {
|
|
|
|
// get the latest kind 3 event for the user, which lists his 'follows' list
|
|
if( gKindONames.containsKey(pubkey)) {
|
|
Event? e = (gKindONames[pubkey]?.latestContactEvent)??null;
|
|
return e;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
// for the user userPubkey, returns the relay of its contact contactPubkey
|
|
String getRelayOfUser(String userPubkey, String contactPubkey) {
|
|
|
|
if(gDebug > 0) print("In getRelayOfUser: Searching relay for contact $contactPubkey" );
|
|
|
|
String relay = "";
|
|
if( userPubkey == "" || contactPubkey == "") {
|
|
return "";
|
|
}
|
|
|
|
if( gContactLists.containsKey(userPubkey)) {
|
|
List<Contact>? contacts = gContactLists[userPubkey];
|
|
if( contacts != null) {
|
|
for( int i = 0; i < contacts.length; i++) {
|
|
if( contacts[i].id == contactPubkey) {
|
|
relay = contacts[i].relay;
|
|
return relay;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// if not found return empty string
|
|
return relay;
|
|
}
|
|
|
|
Future<http.Response> fetchNip05Info(String nip05Url) {
|
|
//print("in fetch nip: url = $nip05Url");
|
|
var retval = http.get(Uri.parse(nip05Url));
|
|
|
|
return retval;
|
|
}
|
|
|
|
// If given event is kind 0 event, then populates gKindONames with that info
|
|
// returns true if entry was created or modified, false otherwise
|
|
bool processKind0Event(Event e) {
|
|
if( e.eventData.kind != 0) {
|
|
return false;
|
|
}
|
|
|
|
String content = e.eventData.content;
|
|
if( content.isEmpty) {
|
|
return false;
|
|
}
|
|
|
|
String name = "";
|
|
String about = "";
|
|
String picture = "";
|
|
String nip05 = "";
|
|
|
|
try {
|
|
dynamic json = jsonDecode(content);
|
|
name = json["name"]??"";
|
|
about = json["about"]??"";
|
|
picture = json["picture"]??"";
|
|
nip05 = json['nip05']??"";
|
|
//String twitterId = json['twitter']??"";
|
|
//String githubId = json['github']??"";
|
|
} catch(ex) {
|
|
if( gDebug > 0) print("Error in processKind0Event: $ex for pubkey: ${e.eventData.pubkey}");
|
|
}
|
|
|
|
bool newEntry = false, entryModified = false;
|
|
if( !gKindONames.containsKey(e.eventData.pubkey)) {
|
|
gKindONames[e.eventData.pubkey] = UserNameInfo(e.eventData.createdAt, name, about, picture, e);
|
|
newEntry = true;;
|
|
} else {
|
|
int oldTime = gKindONames[e.eventData.pubkey]?.createdAt??0;
|
|
if( oldTime < e.eventData.createdAt) {
|
|
gKindONames[e.eventData.pubkey] = UserNameInfo(e.eventData.createdAt, name, about, picture, e);
|
|
entryModified = true;
|
|
}
|
|
}
|
|
|
|
if(gDebug > 0) {
|
|
print("At end of processKind0Events: for name = $name ${newEntry? "added entry": ( entryModified?"modified entry": "No change done")} ");
|
|
}
|
|
|
|
bool localDebug = false; //e.eventData.pubkey == "9ec7a778167afb1d30c4833de9322da0c08ba71a69e1911d5578d3144bb56437"? true: false;
|
|
|
|
if( newEntry || entryModified) {
|
|
if(nip05.length > 0) {
|
|
List<String> urlSplit = nip05.split("@");
|
|
if( urlSplit.length == 2) {
|
|
|
|
String urlNip05 = urlSplit[1] + "/.well-known/nostr.json?name=" + urlSplit[0];
|
|
if( !urlNip05.startsWith("http")) {
|
|
urlNip05 = "http://"+ urlNip05;
|
|
}
|
|
|
|
fetchNip05Info(urlNip05)
|
|
.then((httpResponse) {
|
|
if( localDebug ) print("-----\nnip future for $urlNip05 returned body ${httpResponse.body}");
|
|
|
|
var namesInResponse;
|
|
try {
|
|
dynamic json = jsonDecode(httpResponse.body);
|
|
namesInResponse = json["names"];
|
|
if( namesInResponse.length > 0) {
|
|
for(var returntedName in namesInResponse.keys) {
|
|
|
|
if( returntedName == urlSplit[0] && namesInResponse[returntedName] == e.eventData.pubkey) {
|
|
int oldTime = 0;
|
|
if( !gKindONames.containsKey(e.eventData.pubkey)) {
|
|
//printWarning("in response handing. creating user info");
|
|
gKindONames[e.eventData.pubkey] = UserNameInfo(e.eventData.createdAt, name, about, picture, e);
|
|
} else {
|
|
oldTime = gKindONames[e.eventData.pubkey]?.createdAt??0;
|
|
//print("in response handing. user info exists with old time = $oldTime and this event time = ${e.eventData.createdAt}");
|
|
}
|
|
|
|
if( oldTime <= e.eventData.createdAt ) {
|
|
gKindONames[e.eventData.pubkey]?.nip05Verified = true;
|
|
gKindONames[e.eventData.pubkey]?.nip05Id = nip05;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
//print("names = 0");
|
|
}
|
|
} catch(ex) {
|
|
}
|
|
})
|
|
.catchError((e){if( gDebug > 0) print('in fetch nip caught error $e for url $urlNip05');});
|
|
}
|
|
}
|
|
}
|
|
|
|
return newEntry || entryModified;
|
|
}
|
|
|
|
// If given event is kind 3 event, then populates gKindONames with contact info
|
|
// returns true if entry was created or modified, false otherwise
|
|
bool processKind3Event(Event newContactEvent) {
|
|
if( newContactEvent.eventData.kind != 3) {
|
|
return false;
|
|
}
|
|
|
|
bool newEntry = false, entryModified = false;
|
|
if( !gKindONames.containsKey(newContactEvent.eventData.pubkey)) {
|
|
gKindONames[newContactEvent.eventData.pubkey] = UserNameInfo(null, null, null, null, newContactEvent, newContactEvent.eventData.createdAt);
|
|
newEntry = true;;
|
|
} else {
|
|
// if entry already exists, then check its old time and update only if we have a newer entry now
|
|
int oldTime = gKindONames[newContactEvent.eventData.pubkey]?.createdAtKind3??0;
|
|
if( oldTime < newContactEvent.eventData.createdAt) {
|
|
int? createdAt = gKindONames[newContactEvent.eventData.pubkey]?.createdAt??null;
|
|
String? name = gKindONames[newContactEvent.eventData.pubkey]?.name, about = gKindONames[newContactEvent.eventData.pubkey]?.about, picture = gKindONames[newContactEvent.eventData.pubkey]?.picture;
|
|
|
|
gKindONames[newContactEvent.eventData.pubkey] = UserNameInfo(createdAt, name, about, picture, newContactEvent, newContactEvent.eventData.createdAt );
|
|
entryModified = true;;
|
|
}
|
|
}
|
|
|
|
if(gDebug > 0) {
|
|
print("At end of processKind3Events: ${newEntry? "added entry": ( entryModified?"modified entry": "No change done")} ");
|
|
}
|
|
return newEntry || entryModified;
|
|
}
|
|
|
|
String getNip05Name( String pubkey) {
|
|
String nip05name = "";
|
|
if( gKindONames[pubkey]?.name == null || gKindONames[pubkey]?.name?.length == 0) {
|
|
nip05name = "";
|
|
}
|
|
else {
|
|
String name = gKindONames[pubkey]?.name??"";
|
|
if( gKindONames[pubkey]?.nip05Verified??false) {
|
|
nip05name = "$name (nip05: ${gKindONames[pubkey]?.nip05Id??""})";
|
|
} else {
|
|
nip05name = name;
|
|
}
|
|
}
|
|
return nip05name;
|
|
}
|
|
|
|
// returns name by looking up global list gKindONames, which is populated by kind 0 events
|
|
String getAuthorName(String pubkey, [int len = 3]) {
|
|
String max3(String v) => v.length > len? v.substring(0,len) : v.substring(0, v.length);
|
|
String name = "";
|
|
if( gKindONames[pubkey]?.name == null || gKindONames[pubkey]?.name?.length == 0)
|
|
name = max3(pubkey);
|
|
else {
|
|
name = (gKindONames[pubkey]?.name)??max3(pubkey);
|
|
}
|
|
return name;
|
|
}
|
|
|
|
// returns full public key(s) for the given username( which can be first few letters of pubkey, or the user name)
|
|
Set<String> getPublicKeyFromName(String inquiredName) {
|
|
if( inquiredName.length < 1) {
|
|
return {};
|
|
}
|
|
Set<String> pubkeys = {};
|
|
gKindONames.forEach((pubkey, userInfo) {
|
|
// check both the user name, and the pubkey to search for the user
|
|
// check username
|
|
if( userInfo.name != null) {
|
|
int minNameLen = min( inquiredName.length, (userInfo.name?.length)??0);
|
|
if( inquiredName.toLowerCase() == userInfo.name?.substring(0, minNameLen).toLowerCase()) {
|
|
pubkeys.add(pubkey);
|
|
}
|
|
}
|
|
|
|
// check public key
|
|
if( inquiredName.length >= 2 && inquiredName.length <= pubkey.length) {
|
|
if( pubkey.substring(0, inquiredName.length) == inquiredName) {
|
|
pubkeys.add(pubkey);
|
|
}
|
|
}
|
|
});
|
|
|
|
return pubkeys;
|
|
}
|
|
|
|
// returns the seconds since eponch N days ago
|
|
int getSecondsDaysAgo( int N) {
|
|
return DateTime.now().subtract(Duration(days: N)).millisecondsSinceEpoch ~/ 1000;
|
|
}
|
|
|
|
void printUnderlined(String x) => { stdout.write("$x\n${getNumDashes(x.length)}\n")};
|
|
|
|
void printDepth(int d) {
|
|
for( int i = 0; i < gSpacesPerDepth * d + gNumLeftMarginSpaces; i++) {
|
|
stdout.write(" ");
|
|
}
|
|
}
|
|
|
|
void printCenteredHeadline(displayName) {
|
|
int numDashes = 10; // num of dashes on each side
|
|
int startText = gNumLeftMarginSpaces + ( gTextWidth - (displayName.length + 2 * numDashes)) ~/ 2;
|
|
if( startText < 0)
|
|
startText = 0;
|
|
|
|
String str = getNumSpaces(startText) + getNumDashes(numDashes) + displayName + getNumDashes(numDashes);
|
|
print(str);
|
|
}
|
|
|
|
String getDepthSpaces(int d) {
|
|
String str = "";
|
|
for( int i = 0; i < gSpacesPerDepth * d + gNumLeftMarginSpaces; i++) {
|
|
str += " ";
|
|
}
|
|
return str;
|
|
}
|
|
|
|
String getNumSpaces(int num) {
|
|
String s = "";
|
|
for( int i = 0; i < num; i++) {
|
|
s += " ";
|
|
}
|
|
return s;
|
|
}
|
|
|
|
String getNumDashes(int num, [String dashType = "-"]) {
|
|
String s = "";
|
|
for( int i = 0; i < num; i++) {
|
|
s += dashType;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
List<List<int>> getUrlRanges(String s) {
|
|
List<List<int>> urlRanges = [];
|
|
String regexp1 = "http[s]*:\/\/[a-zA-Z0-9]+([.a-zA-Z0-9/_\\-\\#\\+=\\&\\?]*)";
|
|
|
|
RegExp httpRegExp = RegExp(regexp1);
|
|
for( var match in httpRegExp.allMatches(s) ) {
|
|
List<int> entry = [match.start, match.end];
|
|
urlRanges.add(entry);
|
|
}
|
|
|
|
return urlRanges;
|
|
}
|
|
|
|
// make a paragraph of s that starts at numSpaces ( from screen left), and does not extend beyond gTextWidth+gNumLeftMarginSpaces. break it, or add
|
|
// a newline if it goes beyond gTextWidth + gNumLeftMarginSpaces
|
|
String makeParagraphAtDepth(String s, int depthInSpaces) {
|
|
|
|
List<List<int>> urlRanges = getUrlRanges(s);
|
|
|
|
String newString = "";
|
|
String spacesString = getNumSpaces(depthInSpaces + gNumLeftMarginSpaces);
|
|
|
|
int lenPerLine = gTextWidth - depthInSpaces;
|
|
//print("In makeParagraphAtDepth: gNumLeftMarginSpaces = $gNumLeftMarginSpaces depthInSPaces = $depthInSpaces LenPerLine = $lenPerLine gTextWidth = $gTextWidth ");
|
|
for(int startIndex = 0; startIndex < s.length; ) {
|
|
List listCulledLine = getLineWithMaxLen(s, startIndex, lenPerLine, spacesString, urlRanges);
|
|
|
|
String line = listCulledLine[0];
|
|
int lenReturned = listCulledLine[1] as int;
|
|
|
|
//print("In makeParagraphAtDepth: line len = ${line.length} lenReturned = $lenReturned");
|
|
|
|
if( line.length == 0 || lenReturned == 0) break;
|
|
|
|
newString += line;
|
|
startIndex += lenReturned;
|
|
}
|
|
|
|
return newString;
|
|
}
|
|
|
|
// returns true if n is in any of the ranges given in list
|
|
int isInRange( int n, List<List<int>> ranges ) {
|
|
for( int i = 0; i < ranges.length; i++) {
|
|
if( n >= ranges[i][0] && n < ranges[i][1]) {
|
|
return ranges[i][1];
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// returns from string[startIndex:] the first len number of chars. no newline is added.
|
|
List getLineWithMaxLen(String s, int startIndex, int lenPerLine, String spacesString, List<List<int>> urlRanges) {
|
|
|
|
if( startIndex >= s.length)
|
|
return ["", 0];
|
|
|
|
String line = ""; // is returned
|
|
|
|
// if length required is greater than the length of string remaing, return whatever remains
|
|
int numCharsInLine = 0;
|
|
|
|
int i = startIndex;
|
|
// i indexes over the input line ( which is the whole comment)
|
|
for(; i < startIndex + lenPerLine && i < s.length; i++) {
|
|
line += s[i];
|
|
numCharsInLine ++;
|
|
|
|
if( s[i] == "\n") {
|
|
i++;
|
|
numCharsInLine = 0;
|
|
line += spacesString;
|
|
break;
|
|
}
|
|
}
|
|
|
|
int urlEnd = 0;
|
|
if( (urlEnd = isInRange(i, urlRanges)) != 0) {
|
|
|
|
line = line + s.substring(i, urlEnd);
|
|
i = urlEnd;
|
|
|
|
} else {
|
|
|
|
if( numCharsInLine > lenPerLine || ( (numCharsInLine == lenPerLine) && (s.length > startIndex + numCharsInLine) )) {
|
|
bool lineBroken = false;
|
|
|
|
// line is broken only if the returned line is the longest it can be, and
|
|
// if its length is greater than the gMaxLenBrokenWord constant
|
|
if( line.length >= lenPerLine && line.length > gMaxLenUnbrokenWord ) {
|
|
int i = line.length - 1;
|
|
|
|
// find a whitespace character
|
|
for( ; i > 0 && !isWordSeparater(line[i]); i--);
|
|
// for ended
|
|
|
|
if( line.length - i < gMaxLenUnbrokenWord) {
|
|
|
|
// break the line here if its a word separator
|
|
if( isWordSeparater(line[i])) {
|
|
int newLineStart = i + 1;
|
|
if( line[i] != ' ')
|
|
newLineStart = i;
|
|
line = line.substring(0, i) + "\n" + spacesString + line.substring(newLineStart, line.length);
|
|
lineBroken = true;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if( !lineBroken ) {
|
|
if( s.length > i ) {
|
|
line += "\n";
|
|
line += spacesString;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return [line, i - startIndex];
|
|
}
|
|
|
|
bool nonEnglish(String str) {
|
|
bool result = false;
|
|
return result;
|
|
}
|
|
|
|
bool isNumeric(String s) {
|
|
return double.tryParse(s) != null;
|
|
}
|
|
|
|
bool isWordSeparater(String s) {
|
|
if( s.length != 1) {
|
|
return false;
|
|
}
|
|
return s[0] == ' ' || s[0] == '\n' || s[0] == '\r' || s[0] == '\t'
|
|
|| s[0] == ',' || s[0] == '.' || s[0] == '-' || s[0] == '('|| s[0] == ')';
|
|
}
|
|
|
|
|
|
bool isWhitespace(String s) {
|
|
if( s.length != 1) {
|
|
return false;
|
|
}
|
|
return s[0] == ' ' || s[0] == '\n' || s[0] == '\r' || s[0] == '\t';
|
|
}
|
|
|
|
extension StringX on String {
|
|
|
|
|
|
int isChannelPageNumber(int max) {
|
|
|
|
if(this.length < 2 || this[0] != '/') {
|
|
return 0;
|
|
}
|
|
|
|
String rest = this.substring(1);
|
|
|
|
//print("rest = $rest");
|
|
int? n = int.tryParse(rest);
|
|
if( n != null) {
|
|
if( n < max)
|
|
return n;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
isEnglish( ) {
|
|
// since smaller words can be smileys they should not be translated
|
|
if( length < 10)
|
|
return true;
|
|
|
|
if( !isLatinAlphabet())
|
|
return false;
|
|
|
|
if (isFrench())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
isPortugese() {
|
|
false; // https://1000mostcommonwords.com/1000-most-common-portuguese-words/
|
|
}
|
|
|
|
bool isFrench() {
|
|
|
|
// https://www.thoughtco.com/most-common-french-words-1372759
|
|
List<String> frenchWords = ["oui", "je", "le", "un", "de", "et", "merci", "une", "ce", "pas"];
|
|
for( int i = 0; i < frenchWords.length; i++) {
|
|
if( this.toLowerCase().contains(" ${frenchWords[i]} ")) {
|
|
if( gDebug > 0) print("isFrench: Found ${this.toString()} is french");
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
isLatinAlphabet({caseSensitive = false}) {
|
|
int countLatinletters = 0;
|
|
for (int i = 0; i < length; i++) {
|
|
final target = caseSensitive ? this[i] : this[i].toLowerCase();
|
|
if ( (target.codeUnitAt(0) > 96 && target.codeUnitAt(0) < 123) || ( isNumeric(target) ) || isWhitespace(target)) {
|
|
countLatinletters++;
|
|
}
|
|
}
|
|
|
|
if( countLatinletters < ( 40.0/100 ) * length ) {
|
|
if( gDebug > 0) print("in isLatinAlphabet: latin letters: $countLatinletters and total = $length ");
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// The contact only stores id and relay of contact. The actual name is stored in a global variable/map
|
|
class Contact {
|
|
String id, relay;
|
|
Contact(this.id, this.relay);
|
|
|
|
@override
|
|
String toString() {
|
|
return 'id: $id ( ${getAuthorName(id)}) relay: $relay';
|
|
}
|
|
|
|
}
|
|
|
|
String addEscapeChars(String str) {
|
|
String temp = "";
|
|
//temp = temp.replaceAll("\\", "\\\\");
|
|
temp = str.replaceAll("\"", "\\\"");
|
|
return temp.replaceAll("\n", "\\n");
|
|
}
|
|
|
|
String unEscapeChars(String str) {
|
|
//print("in unEscape: |$str|");
|
|
String temp = str.replaceAll("\"", "\\\"");
|
|
//temp = temp.replaceAll("\\\\", "\\");
|
|
temp = temp.replaceAll("\n", "\\n");
|
|
//print("returning |$temp|\n");
|
|
return temp;
|
|
}
|
|
|
|
|
|
String getShaId(String pubkey, String createdAt, String kind, String strTags, String content) {
|
|
String buf = '[0,"$pubkey",$createdAt,$kind,[$strTags],"$content"]';
|
|
if(gSpecificDebug > 0) print("in getShaId for buf: |$buf|");
|
|
var bufInBytes = utf8.encode(buf);
|
|
var value = sha256.convert(bufInBytes);
|
|
return value.toString();
|
|
}
|
|
|
|
// get printable date from seconds since epoch
|
|
String getPrintableDate(int createdAt) {
|
|
final df1 = DateFormat('hh:mm a');
|
|
final df2 = DateFormat(DateFormat.ABBR_MONTH_DAY);
|
|
String strDate = df1.format(DateTime.fromMillisecondsSinceEpoch(createdAt*1000));
|
|
strDate += " ${df2.format(DateTime.fromMillisecondsSinceEpoch(createdAt*1000))}";
|
|
return strDate;
|
|
}
|
|
|
|
/*
|
|
* Returns true if this is a valid direct message to just this user
|
|
*/
|
|
bool isValidDirectMessage(EventData directMessageData) {
|
|
bool validUserMessage = false;
|
|
|
|
List<String> allPtags = [];
|
|
|
|
if( [4, gSecretMessageKind].contains( directMessageData.kind) ) {
|
|
if(gDebug > 0 && gCheckEventId == directMessageData.id) print("in isValidDirectMessage for kind $gSecretMessageKind. its id = ${directMessageData.id}");
|
|
}
|
|
|
|
directMessageData.tags.forEach((tag) {
|
|
if( tag.length < 2 ) {
|
|
return;
|
|
}
|
|
if( tag[0] == "p" && tag[1].length == 64) { // basic length sanity test
|
|
allPtags.add(tag[1]);
|
|
}
|
|
});
|
|
|
|
if(gDebug > 0 && gCheckEventId == directMessageData.id) print("In isvalid direct message: ptags len: ${allPtags.length}, ptags = ${allPtags}");
|
|
|
|
if( directMessageData.pubkey == userPublicKey && allPtags.length == 1) {
|
|
if( allPtags[0].substring(0, 32) != "0".padLeft(32, '0')) { // check that the message hasn't been sent to an invalid pubkey
|
|
validUserMessage = true; // case where this user is sender
|
|
}
|
|
} else {
|
|
if(gCheckEventId == directMessageData.id) print("in else case 3");
|
|
if ( directMessageData.pubkey != userPublicKey) {
|
|
if(gDebug > 0 && gCheckEventId == directMessageData.id) print("in if 5 allpags 1st = ${allPtags[0]} userPUblic key = $userPublicKey");
|
|
if( allPtags.length == 1 && allPtags[0] == userPublicKey) {
|
|
|
|
validUserMessage = true; // case where this user is recipeint
|
|
}
|
|
}
|
|
}
|
|
return validUserMessage;
|
|
}
|
|
|
|
String getRandomPrivKey() {
|
|
FortunaRandom fr = FortunaRandom();
|
|
final _sGen = Random.secure();;
|
|
fr.seed(KeyParameter(
|
|
Uint8List.fromList(List.generate(32, (_) => _sGen.nextInt(255)))));
|
|
|
|
BigInt randomNumber = fr.nextBigInteger(256);
|
|
String strKey = randomNumber.toRadixString(16);
|
|
if( strKey.length < 64) {
|
|
int numZeros = 64 - strKey.length;
|
|
for(int i = 0; i < numZeros; i++) {
|
|
strKey = "0" + strKey;
|
|
}
|
|
}
|
|
return strKey;
|
|
}
|
|
|
|
// pointy castle source https://github.com/PointyCastle/pointycastle/blob/master/tutorials/aes-cbc.md
|
|
// https://github.com/bcgit/pc-dart/blob/master/tutorials/aes-cbc.md
|
|
// 3 https://github.com/Dhuliang/flutter-bsv/blob/42a2d92ec6bb9ee3231878ffe684e1b7940c7d49/lib/src/aescbc.dart
|
|
|
|
/// Decrypt data using self private key
|
|
String myPrivateDecrypt( String privateString,
|
|
String publicString,
|
|
String b64encoded,
|
|
[String b64IV = ""]) {
|
|
|
|
Uint8List encdData = convert.base64.decode(b64encoded);
|
|
final rawData = myPrivateDecryptRaw(privateString, publicString, encdData, b64IV);
|
|
return convert.Utf8Decoder().convert(rawData.toList());
|
|
}
|
|
|
|
|
|
Map<String, List<List<int>>> gMapByteSecret = {};
|
|
|
|
Uint8List myPrivateDecryptRaw( String privateString,
|
|
String publicString,
|
|
Uint8List cipherText,
|
|
[String b64IV = ""]) {
|
|
try {
|
|
|
|
List<List<int>> byteSecret = [];
|
|
if( gMapByteSecret.containsKey(publicString)) {
|
|
byteSecret = gMapByteSecret[publicString]??[];
|
|
}
|
|
|
|
if( byteSecret.isEmpty) {
|
|
byteSecret = Kepler.byteSecret(privateString, publicString);;
|
|
gMapByteSecret[publicString] = byteSecret;
|
|
}
|
|
|
|
final secretIV = byteSecret;
|
|
|
|
final key = Uint8List.fromList(secretIV[0]);
|
|
|
|
final iv = b64IV.length > 6
|
|
? convert.base64.decode(b64IV)
|
|
: Uint8List.fromList(secretIV[1]);
|
|
|
|
|
|
CipherParameters params = new PaddedBlockCipherParameters(
|
|
new ParametersWithIV(new KeyParameter(key), iv), null);
|
|
|
|
PaddedBlockCipherImpl cipherImpl = new PaddedBlockCipherImpl(
|
|
new PKCS7Padding(), new CBCBlockCipher(new AESEngine()));
|
|
|
|
|
|
cipherImpl.init(false,
|
|
params as PaddedBlockCipherParameters<CipherParameters?,
|
|
CipherParameters?>);
|
|
|
|
final Uint8List finalPlainText = Uint8List(cipherText.length); // allocate space
|
|
|
|
var offset = 0;
|
|
while (offset < cipherText.length - 16) {
|
|
offset += cipherImpl.processBlock(cipherText, offset, finalPlainText, offset);
|
|
}
|
|
|
|
//remove padding
|
|
offset += cipherImpl.doFinal(cipherText, offset, finalPlainText, offset);
|
|
assert(offset == cipherText.length);
|
|
return finalPlainText.sublist(0, offset);
|
|
} catch(e) {
|
|
if( gDebug >= 0) print("Decryption error = $e");
|
|
return Uint8List(0);
|
|
}
|
|
}
|
|
|
|
/// Encrypt data using self private key in nostr format ( with trailing ?iv=)
|
|
String myEncrypt( String privateString,
|
|
String publicString,
|
|
String plainText) {
|
|
//print("private = ${privateString.length} public = ${publicString.length}");
|
|
//print("private = ${privateString} public = ${publicString}");
|
|
Uint8List uintInputText = convert.Utf8Encoder().convert(plainText);
|
|
final encryptedString = myEncryptRaw(privateString, publicString, uintInputText);
|
|
//print("encryptedString = $encryptedString");
|
|
return encryptedString;
|
|
}
|
|
|
|
String myEncryptRaw( String privateString,
|
|
String publicString,
|
|
Uint8List uintInputText) {
|
|
final secretIV = Kepler.byteSecret(privateString, publicString);
|
|
final key = Uint8List.fromList(secretIV[0]);
|
|
|
|
// generate iv https://stackoverflow.com/questions/63630661/aes-engine-not-initialised-with-pointycastle-securerandom
|
|
FortunaRandom fr = FortunaRandom();
|
|
final _sGen = Random.secure();;
|
|
fr.seed(KeyParameter(
|
|
Uint8List.fromList(List.generate(32, (_) => _sGen.nextInt(255)))));
|
|
final iv = fr.nextBytes(16); //Uint8List.fromList(secretIV[1]);
|
|
|
|
CipherParameters params = new PaddedBlockCipherParameters(
|
|
new ParametersWithIV(new KeyParameter(key), iv), null);
|
|
|
|
PaddedBlockCipherImpl cipherImpl = new PaddedBlockCipherImpl(
|
|
new PKCS7Padding(), new CBCBlockCipher(new AESEngine()));
|
|
|
|
cipherImpl.init(true, // means to encrypt
|
|
params as PaddedBlockCipherParameters<CipherParameters?,
|
|
CipherParameters?>);
|
|
|
|
final Uint8List outputEncodedText = Uint8List(uintInputText.length + 16); // allocate space
|
|
|
|
var offset = 0;
|
|
while (offset < uintInputText.length - 16) {
|
|
offset += cipherImpl.processBlock(uintInputText, offset, outputEncodedText, offset);
|
|
}
|
|
|
|
//add padding
|
|
offset += cipherImpl.doFinal(uintInputText, offset, outputEncodedText, offset);
|
|
assert(offset == uintInputText.length);
|
|
final Uint8List finalEncodedText = outputEncodedText.sublist(0, offset);
|
|
|
|
String stringIv = convert.base64.encode(iv);;
|
|
String outputPlainText = convert.base64.encode(finalEncodedText);
|
|
outputPlainText = outputPlainText + "?iv=" + stringIv;
|
|
return outputPlainText;
|
|
}
|
|
|
|
|
|
Set<Event> readEventsFromFile(String filename) {
|
|
Set<Event> events = {};
|
|
final File file = File(filename);
|
|
|
|
// sync read
|
|
try {
|
|
List<String> lines = file.readAsLinesSync();
|
|
for( int i = 0; i < lines.length; i++ ) {
|
|
Event e = Event.fromJson(lines[i], "", true);
|
|
events.add(e);
|
|
}
|
|
} on Exception catch(e) {
|
|
//print("cannot open file $gEventsFilename");
|
|
if( gDebug > 0) print("Could not open file. error = $e");
|
|
}
|
|
|
|
if( gDebug > 0) print("In readEventsFromFile: returning ${events.length} total events");
|
|
return events;
|
|
}
|
|
|
|
bool isValidPubkey(String pubkey) {
|
|
if( pubkey.length == 64) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
List<String> getEncryptedChannelKeys(List<String> secretMessageIds, Map<String, Tree> tempChildEventsMap, String channelId) {
|
|
Event? e = tempChildEventsMap[channelId]?.event;
|
|
if( e != null) {
|
|
//print("\n----------------\nIn getEncryptedChannelKeys for encrypted channel $channelId");
|
|
String creatorPubKey = e.eventData.pubkey;
|
|
|
|
|
|
for( int j = 0; j < secretMessageIds.length; j++) {
|
|
String messageId = secretMessageIds[j];
|
|
|
|
Event? messageEvent = tempChildEventsMap[messageId]?.event;
|
|
if( messageEvent != null) {
|
|
//print("got a message which is: ${messageEvent.eventData.evaluatedContent}");
|
|
//print(messageEvent.eventData.getStrForChannel(0));
|
|
String evaluatedContent = messageEvent.eventData.evaluatedContent;
|
|
if( evaluatedContent.startsWith("App Encrypted Channels:")) {
|
|
//print("got App");
|
|
if( evaluatedContent.contains(channelId) && evaluatedContent.length == 288) {
|
|
//print("in getEncryptedChannelKeys: success: got password in pvt message: $evaluatedContent");
|
|
//print("len of evaluated content: ${evaluatedContent.length} ");
|
|
String priKey = evaluatedContent.substring(159, 159 + 64);
|
|
String pubKey = evaluatedContent.substring(224, 224 + 64);
|
|
|
|
if( priKey.length == 64 && pubKey.length == 64) {
|
|
return [priKey, pubKey];
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
print("could not get message event");
|
|
}
|
|
}
|
|
}
|
|
return [];
|
|
}
|
|
|
|
String myGetPublicKey(String prikey) {
|
|
String pubkey = getPublicKey(prikey);
|
|
|
|
if( pubkey.length < 64) {
|
|
int numZeros = 64 - pubkey.length;
|
|
for(int i = 0; i < numZeros; i++) {
|
|
pubkey = "0" + pubkey;
|
|
}
|
|
}
|
|
return pubkey;
|
|
}
|