(29.02.2020): Changes and additions.

(29.02.2019)  82 files is different. Changed 45 files, added 37 files, 3 files was been deleted - in 14 folders.
See all changes in changes of Changes.txt

download/created/temp_file_to_create_directory.txt

@@ -0,0 +1 @@
+This temp file just need to create this empty directory. You can delete this file, if this will not be automatically deleted, in future.

download/generated/temp_file_to_create_directory.txt

@@ -0,0 +1 @@
+This temp file just need to create this empty directory. You can delete this file, if this will not be automatically deleted, in future.

nanodb.exe-source/Captcha/ByteStringExt.cs

@@ -26,11 +26,21 @@ public static string Stringify(this byte[] bytes)
 
         public static byte[] Bytify(this string @string)
         {
-            var bytes = new byte[@string.Length / 2];
+			//when database is corrupted and damaged,
+			//or when some text contains in the end of the post, after [sign=blahblah]some_text
+			string sign_value = @string.Split(']')[0];				//just cut signature [sign=blahblah], and working with signature only.
+            var bytes = new byte[sign_value.Length / 2];
 
-            for (int i = 0; i < @string.Length / 2; i++)
+            for (int i = 0; i < sign_value.Length / 2; i++)
             {
-                bytes[i] = byte.Parse(@string[i * 2] + "" + @string[i * 2 + 1], System.Globalization.NumberStyles.HexNumber);
+				try{						//try 
+					bytes[i] = byte.Parse(sign_value[i * 2] + "" + sign_value[i * 2 + 1], System.Globalization.NumberStyles.HexNumber);
+					//Sometimes System.Byte.Parse return incorrect value, when @string contains some text, after signature.
+				}
+				catch (Exception ex){		//or return some shit, as bytes.
+					Console.WriteLine(ex);
+					bytes[i] = 0;			//add null byte, just to skip this step.
+				}
             }
 
             return bytes;

nanodb.exe-source/Captcha/Captcha.cs

@@ -51,7 +51,7 @@ class Captcha
 		public static string original_captcha_file_sha256_hash = "0732888283037E2B17FFF361EAB73BEC26F7D2505CDB98C83C80EC14B9680413";
 		public static string captcha_downloading_url = "http://some_url_to_download_captcha/";	//This value can be customized in config-3.json, without hardcoding this.
 
-		public static bool captcha_checked = false;
+		public static bool captcha_checked = false;		public static bool bypassValidation = false;
 		public static bool IsCaptchaValid = false;
 		public static bool captcha_found = false;
 
@@ -194,7 +194,7 @@ private static string ToHex(byte[] bytes, bool upperCase)
 
 		public static bool verify_captcha_hash(){
             _packFile = Configurator.Instance.GetValue("captcha_pack_file", captcha_file);
-			captcha_downloading_url = Configurator.Instance.GetValue("captcha_url", captcha_downloading_url);
+			captcha_downloading_url = Uri.UnescapeDataString(Configurator.Instance.GetValue("captcha_url", captcha_downloading_url));
 
 			string captcha_file_hash = "";
 			if(!File.Exists(_packFile)){
@@ -362,6 +362,7 @@ public static string AddPow(string post)
                 hash = ComputeHash(xpost + trash);
             }
 
+//			Console.WriteLine("Catcha.cs. AddPow. trash: "+trash+", hash: "+BitConverter.ToString(hash).Replace("-", ""));
             return post + trash;
         }
     }

nanodb.exe-source/Captcha/PostSignatureExt.cs

@@ -22,8 +22,8 @@ public static string ExceptSignature(this string post)
         public static byte[] Signature(this string post)
         {
             if (post.IndexOf("["+Captcha.SignatureTag+"=") == -1) return new byte[64];
-            var offset = post.LastIndexOf("["+Captcha.SignatureTag+"=") + ("["+Captcha.SignatureTag+"=").Length;
-            return post.Substring(offset).TrimEnd(']').Bytify();
+            int offset = post.LastIndexOf("["+Captcha.SignatureTag+"=") + ("["+Captcha.SignatureTag+"=").Length;
+            return ((byte[])((string)(post.Substring(offset).TrimEnd(']'))).Bytify());
         }
     }
 

nanodb.exe-source/Database/FileUtil.cs

@@ -10,7 +10,10 @@ static class FileUtil
         /* Appends bytes to the end of file */
         public static int Append(string path, string @string)
         {
-            return Append(path, System.Text.Encoding.UTF8.GetBytes(@string));
+            lock (_lock) //sometimes .db3 file busy by another process, when program try to append string there. lock it.
+            {
+				return Append(path, System.Text.Encoding.UTF8.GetBytes(@string));
+			}
         }
 
         /* Appends bytes to the end of file */

nanodb.exe-source/Database/Post.cs

@@ -10,7 +10,13 @@ namespace NDB
     /*
         Post entity used by DB class and API handlers for read/write.
     */
-    public class Post
+	[System.Runtime.InteropServices.ComVisible(true)]
+	public interface ICloneable
+	{
+		object Clone();	//Need to Clone Ndb.Post (Post). See comment at line 95.
+	}
+
+    public class Post : ICloneable
     {
 #pragma warning disable 0649
         [JsonProperty("hash")]
@@ -21,23 +27,51 @@ public class Post
         public string replyto;											//here			//this
 #pragma warning restore 0649
 
+		object _lock = new object();	//lock datetime_result
 		//from client 3.1
         public DateTime date
         {
-            get
+            get	//get date and time from [g][/g] tag in the message of the post.
             {
-                DateTime res;
-                try
-                {
-                    res = Convert.ToDateTime(message.FromB64().Split(new string[] { "[g]" }, StringSplitOptions.None)[1].
-                        Split(new string[] { ", client:" }, StringSplitOptions.None)[0]);
-
-                }
-                catch//(Exception e) //fix compile warning
-                {
-                    res = new DateTime();
-                }
-                return res;
+				lock(_lock){	//_lock datetime_result value
+					DateTime datetime_result = new DateTime();					//new DateTime() == DateTime.Parse("01.01.0001 0:00:00")
+
+					string[] splitted =
+								message								//get post message
+								.Replace("post_was_deleted", "")	//remove "post_was_deleted", if this was been "deleted_once"
+//								.Replace("post_is_reported", "")	//remove "post_is_reported", if this was been "reported"
+								.FromB64()							//decode base64-encoded post-message to string
+								.Split(								//split this string
+									new string[] { "[g]" },			//by "[g]"
+									StringSplitOptions.None
+								);
+					;
+
+					if(splitted.Length>1){							//if "[g]" was been found and splitted-array length > 1
+						splitted = splitted[1]						//continue to split the second part splitted[1]
+							.Split(									//split it
+								new string[] { ", client:" },		//by ", client: "
+								StringSplitOptions.None
+							);
+					}else{											//else if "[g]" not found
+						return datetime_result;										//return default date-time
+					}
+
+					//[g]Mon, 11/Feb/2019, 20:35:20.535 (Europe/Helsinki), client: karasiq-nanoboard v1.3.2[/g]
+					if(splitted[0].Contains("(")){	//DateTime.TryParse("Mon, 11/Feb/2019, 20:35:20.535 (Europe/Helsinki)", out datetime_result); //not working
+						splitted = splitted[0].Split('(');	//DateTime.TryParse("Mon, 11/Feb/2019, 20:35:20.535", out datetime_result); // return 11.02.2019 20:35:20 - working
+					}
+
+					try{
+						DateTime.TryParse(splitted[0], out datetime_result);	//after all, in splitted[0] must to be DateTime.
+																				//Try to parse this and save DateTime in datetime_result.
+					}
+					catch(Exception ex){
+						Console.WriteLine("Post.cs. date. Post hash: "+hash+", post message: "+message.Substring(0, 100)+", Exception: "+ex);
+					}
+
+					return datetime_result; //return parsed DateTime or just return default.
+				}
             }
         }
 
@@ -56,5 +90,16 @@ public Post(string r, string m)
             message = m;
             hash = HashCalculator.Calculate(r + m.FromB64());
         }
+
+		/**
+			Need to clone Post,
+			because when
+			Post newPost = Post oldPost;
+			newPost.message += "post was deleted"+newPost.message; //oldPost.message changing too.
+		*/
+		public object Clone()
+		{
+			return this.MemberwiseClone();	//now, clonning is available by command: Post newPost = (NDB.Post)oldPost.Clone();
+		}
     }
 }