initial files

bencode_parser.py

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-/home/pa/work/ratio-spoof/bencode_parser.py

bencode_parser.py

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+import socket
+import struct
+import sys
+from enum import Enum
+import os
+import json
+import hashlib
+import os
+import urllib.parse
+
+
+class BencodeKeys(Enum):
+    dic = 'd'
+    number=  'i'
+    arr = 'l'
+    end_of_collecion = 'e'
+    length_and_value_string_separator = ':'
+
+    
+def string_parse(startIdx, data:bytes):
+    current  = startIdx
+    while data[current:current +1].decode() != BencodeKeys.length_and_value_string_separator.value:
+        current= current + 1
+    size = data[startIdx:current].decode()
+    string_nextidx = current+1 + int(size)
+    data_slice = data[current+1:current+1 + int(size)]
+    return (str(data_slice, 'utf-8', 'replace'), string_nextidx)
+
+def number_parse(startIdx, data:bytes):
+    current = startIdx
+    while data[current:current +1].decode() != BencodeKeys.end_of_collecion.value:
+           current = current +1
+    number_nextidx = current +1
+    data_slice = data[startIdx +1:current]
+    return (int(data_slice), number_nextidx)
+
+def find_parse(startIdx,data:bytes):
+    c = data[startIdx:startIdx +1].decode()
+    if(c == BencodeKeys.number.value):
+        return number_parse(startIdx, data)
+    elif(c == BencodeKeys.dic.value):
+        return dic_parse(startIdx,data)
+    elif(c == BencodeKeys.arr.value):
+        return list_parse(startIdx,data)
+    elif(str(c).isdigit()):   
+        return string_parse(startIdx, data)
+    else:
+        raise Exception('Error parse')
+
+
+def list_parse(startIdx, data):
+    result = []
+    current = startIdx +1
+    while current < len(data):
+        value, nextIdx = find_parse(current, data)
+        result.append(value)
+        current = nextIdx
+        if (data[current: current+1].decode()== BencodeKeys.end_of_collecion.value):
+           current = current +1
+           break
+    list_nextidx = current
+    return (result, list_nextidx)
+
+
+def dic_parse(startIdx,data):
+    dic = {}
+    initial_dict_idx = startIdx
+    current = startIdx +1
+
+    while current < len(data):
+       key, nextIdx = find_parse(current, data)
+       current = nextIdx
+       value,nextIdx = find_parse(current, data)
+       dic[key] = value
+       current = nextIdx
+       if (data[current: current+1].decode()==BencodeKeys.end_of_collecion.value):
+           current = current +1
+           final_dict_idx = current
+           dic['byte_offsets'] =  [initial_dict_idx,final_dict_idx]
+           break
+    dic_nextidx = current
+    return dic, dic_nextidx
+
+
+def decode(data:bytes):
+    result,_ = find_parse(0,data)
+    return result
+
+
+
+
+

ratio-spoof.py

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-/home/pa/work/ratio-spoof/ratio-spoof.py

ratio-spoof.py

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+import bencode_parser
+
+with open('/home/pa/Downloads/TorrentDB-1586737303638.txt', 'rb') as f: 
+    raw_data = f.read()
+    result = bencode_parser.decode(raw_data)
+    print(result)
+   
+   # offsets =data['info']['byte_offsets']
+    #info_hash = hashlib.sha1(raw_data[offsets[0]: offsets[1]]).hexdigest()
+   # sha1_hash =hashlib.sha1(raw_data[offsets[0]: offsets[1]])
+    #test  = hashlib.sha1(raw_data[offsets[0]: offsets[1]]).digest()
+    #print(data['announce'])
+    #print(urllib.parse.quote(test).lower())