X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=youtube_dl%2Fupdate.py;h=e4a1aaa641b34ed8c6a33e6b5fb725fce6cdba01;hb=1bf996fa5cd996c5f586089388853e324dc3850d;hp=fc7ac8305d71c8cce077ef3040cd0903ac9f09c5;hpb=665b6c123685ea9b090087d30cb5ac9fec58bf30;p=youtube-dl

diff --git a/youtube_dl/update.py b/youtube_dl/update.py
index fc7ac8305..e4a1aaa64 100644
--- a/youtube_dl/update.py
+++ b/youtube_dl/update.py
@@ -9,45 +9,26 @@ import subprocess
 import sys
 from zipimport import zipimporter
 
-from .compat import (
-    compat_str,
-    compat_urllib_request,
-)
-from .utils import make_HTTPS_handler
+from .utils import encode_compat_str
+
 from .version import __version__
 
 
 def rsa_verify(message, signature, key):
-    from struct import pack
     from hashlib import sha256
-
     assert isinstance(message, bytes)
-    block_size = 0
-    n = key[0]
-    while n:
-        block_size += 1
-        n >>= 8
-    signature = pow(int(signature, 16), key[1], key[0])
-    raw_bytes = []
-    while signature:
-        raw_bytes.insert(0, pack("B", signature & 0xFF))
-        signature >>= 8
-    signature = (block_size - len(raw_bytes)) * b'\x00' + b''.join(raw_bytes)
-    if signature[0:2] != b'\x00\x01':
-        return False
-    signature = signature[2:]
-    if b'\x00' not in signature:
+    byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8
+    signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode()
+    signature = (byte_size * 2 - len(signature)) * b'0' + signature
+    asn1 = b'3031300d060960864801650304020105000420'
+    asn1 += sha256(message).hexdigest().encode()
+    if byte_size < len(asn1) // 2 + 11:
         return False
-    signature = signature[signature.index(b'\x00') + 1:]
-    if not signature.startswith(b'\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20'):
-        return False
-    signature = signature[19:]
-    if signature != sha256(message).digest():
-        return False
-    return True
+    expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1
+    return expected == signature
 
 
-def update_self(to_screen, verbose):
+def update_self(to_screen, verbose, opener):
     """Update the program file with the latest version from the repository"""
 
     UPDATE_URL = "https://rg3.github.io/youtube-dl/update/"
@@ -59,15 +40,12 @@ def update_self(to_screen, verbose):
         to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
         return
 
-    https_handler = make_HTTPS_handler({})
-    opener = compat_urllib_request.build_opener(https_handler)
-
     # Check if there is a new version
     try:
         newversion = opener.open(VERSION_URL).read().decode('utf-8').strip()
     except Exception:
         if verbose:
-            to_screen(compat_str(traceback.format_exc()))
+            to_screen(encode_compat_str(traceback.format_exc()))
         to_screen('ERROR: can\'t find the current version. Please try again later.')
         return
     if newversion == __version__:
@@ -80,7 +58,7 @@ def update_self(to_screen, verbose):
         versions_info = json.loads(versions_info)
     except Exception:
         if verbose:
-            to_screen(compat_str(traceback.format_exc()))
+            to_screen(encode_compat_str(traceback.format_exc()))
         to_screen('ERROR: can\'t obtain versions info. Please try again later.')
         return
     if 'signature' not in versions_info:
@@ -129,7 +107,7 @@ def update_self(to_screen, verbose):
             urlh.close()
         except (IOError, OSError):
             if verbose:
-                to_screen(compat_str(traceback.format_exc()))
+                to_screen(encode_compat_str(traceback.format_exc()))
             to_screen('ERROR: unable to download latest version')
             return
 
@@ -143,7 +121,7 @@ def update_self(to_screen, verbose):
                 outf.write(newcontent)
         except (IOError, OSError):
             if verbose:
-                to_screen(compat_str(traceback.format_exc()))
+                to_screen(encode_compat_str(traceback.format_exc()))
             to_screen('ERROR: unable to write the new version')
             return
 
@@ -163,7 +141,7 @@ start /b "" cmd /c del "%%~f0"&exit /b"
             return  # Do not show premature success messages
         except (IOError, OSError):
             if verbose:
-                to_screen(compat_str(traceback.format_exc()))
+                to_screen(encode_compat_str(traceback.format_exc()))
             to_screen('ERROR: unable to overwrite current version')
             return
 
@@ -175,7 +153,7 @@ start /b "" cmd /c del "%%~f0"&exit /b"
             urlh.close()
         except (IOError, OSError):
             if verbose:
-                to_screen(compat_str(traceback.format_exc()))
+                to_screen(encode_compat_str(traceback.format_exc()))
             to_screen('ERROR: unable to download latest version')
             return
 
@@ -189,7 +167,7 @@ start /b "" cmd /c del "%%~f0"&exit /b"
                 outf.write(newcontent)
         except (IOError, OSError):
             if verbose:
-                to_screen(compat_str(traceback.format_exc()))
+                to_screen(encode_compat_str(traceback.format_exc()))
             to_screen('ERROR: unable to overwrite current version')
             return