Improved decoding of short dictionary keys

Author: JoshyPHP

src/Decoder.php

@@ -190,6 +190,13 @@ protected function decodeFastString(string $match, int $len, string $value): str
 
 			return $value;
 		}
+		if ($this->bencoded[$this->offset + 1] === ':')
+		{
+			$value = substr($this->bencoded, $this->offset + 2, $len - 2);
+			$this->offset += $len;
+
+			return $value;
+		}
 
 		return $this->decodeString();
 	}

tests/DecoderTest.php

@@ -194,6 +194,10 @@ public static function getDecodeTests()
 				'd8:announcei1e8:xxxxxxxx8:xxxxxxxxe',
 				new ArrayObject(['announce' => 1, 'xxxxxxxx' => 'xxxxxxxx'])
 			],
+			[
+				'd4:pathi0e40:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxi1ee',
+				new ArrayObject(['path' => 0, 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' => 1])
+			],
 		];
 	}
 
@@ -393,6 +397,10 @@ public static function getDecodeInvalidTests()
 				'd4:pathd',
 				new DecodingException('Premature end of data', 7)
 			],
+			[
+				'd4',
+				new DecodingException('Premature end of data', 1)
+			],
 			[
 				'ld1',
 				new DecodingException('Premature end of data', 2)