Auto download IRD

libray/core.py

@@ -20,6 +20,7 @@
 
 import os
 import sys
+import shutil
 import requests
 from bs4 import BeautifulSoup
 
@@ -32,6 +33,8 @@ except ImportError:
 # Magic numbers / Constant variables
 
 SECTOR = 2048
+ALL_IRD_NET_LOC = 'http://jonnysp.bplaced.net/data.php'
+GET_IRD_NET_LOC = 'http://jonnysp.bplaced.net/ird/'
 
 # Utility functions
 
@@ -73,8 +76,42 @@ def error(msg):
   print('ERROR: %s' % msg)
   sys.exit(1)
 
+
+def warning(msg):
+  print('WARNING: %s. Continuing regardless' % msg)
+
+
+def download_ird(ird_name):
+  ird_link = GET_IRD_NET_LOC + ird_name
+  r = requests.get(ird_link, stream=True)
+
+  with open(ird_name, 'wb') as ird_file:
+    r.raw.decode_content = True
+    shutil.copyfileobj(r.raw, ird_file)
+
+
+def ird_by_game_id(game_id):
+  gameid = game_id.replace('-','')
+  r = requests.get(ALL_IRD_NET_LOC, headers = {'User-Agent': 'Anonymous (You)' }, timeout=5)
+  soup = BeautifulSoup(r.text, "html.parser")
+
+  ird_name = False
+  for elem in soup.find_all("a"):
+    url = elem.get('href').split('/')[-1].replace('\\"','')
+    if gameid in url:
+      ird_name = url
+
+  if not ird_name:
+    error("Unable to download IRD, couldn't find link")  
+
+  download_ird(ird_name)
+
+  return(ird_name)
+  
+
 # Main functions
 
+
 def decrypt(args):
 
   input_iso = iso.ISO(args)

libray/ird.py

@@ -18,6 +18,7 @@
 # You should have received a copy of the GNU General Public License
 # along with libray.  If not, see <https://www.gnu.org/licenses/>.
 
+
 import os
 import sys
 import zlib

libray/iso.py

@@ -45,14 +45,24 @@ class ISO:
 
       self.regions = self.read_regions(input_iso, args.iso)
 
+      input_iso.seek(core.SECTOR)
+      playstation = input_iso.read(16)
+      self.game_id = input_iso.read(16).decode('utf8').strip()
+
     if args.verbose:
       self.print_info()
 
+    if not args.ird:
+      core.warning('No IRD file specified, downloading required file')
+      args.ird = core.ird_by_game_id(self.game_id) # Download ird
+
     self.ird = ird.IRD(args)
 
     if self.ird.region_count != len(self.regions)-1:
-      core.error('ISO corrupted. Expected %s regions, found %s regions' % (self.ird.region_count, len(self.regions)-1))
+      core.error('Corrupt ISO. Expected %s regions, found %s regions' % (self.ird.region_count, len(self.regions)-1))
-      sys.exit()
+
+    if self.regions[-1]['start'] > self.size:
+      core.error('Corrupt ISO. Expected filesize larger than %.2f GiB, actual size is %.2f GiB' % (self.regions[-1]['start'] / 1024**3, self.size / 1024**3 ) )
 
     cipher = AES.new(core.ISO_SECRET, AES.MODE_CBC, core.ISO_IV)
     self.disc_key = cipher.encrypt(self.ird.data1)
@@ -65,7 +75,7 @@ class ISO:
     with open(args.iso, 'rb') as input_iso:
       with open(args.output, 'wb') as output_iso:
 
-        pbar = tqdm(total=self.size)
+        pbar = tqdm(total= (self.size // 2048) - 4 )
       
         for i, region in enumerate(self.regions):
           input_iso.seek(region['start'])
@@ -73,7 +83,10 @@ class ISO:
           if not region['enc']:
             while input_iso.tell() < region['end']:
               data = input_iso.read(core.SECTOR)
-              pbar.update(core.SECTOR)
+              if not data:
+                core.warning("Trying to read past the end of the file")
+                break
+              pbar.update(1)
               output_iso.write(data)
             continue
           else:
@@ -85,7 +98,10 @@ class ISO:
                 num >>= 8
             
               data = input_iso.read(core.SECTOR)
-              pbar.update(core.SECTOR)
+              if not data:
+                core.warning("Trying to read past the end of the file")
+                break
+              pbar.update(1)
              
               cipher = AES.new(self.disc_key, AES.MODE_CBC, bytes(iv))
               decrypted = cipher.decrypt(data)

libray/libray.py

@@ -34,9 +34,9 @@ if __name__ == '__main__':
   parser = argparse.ArgumentParser(description='A Libre (FLOSS) Python application for unencrypting, extracting, repackaging, and encrypting PS3 ISOs')
   parser.add_argument('-v', '--verbose', help="Increase verbosity", action='count')
   parser.add_argument('-o', '--output', dest='output', type=str, help="Output filename", default='output.iso')
+  parser.add_argument('-k', '--ird', dest='ird', type=str, help="Path to .ird file", default="")
   required = parser.add_argument_group('required arguments')
   required.add_argument('-i', '--iso', dest='iso', type=str, help="Path to .iso file", required=True)
-  required.add_argument('-k', '--ird', dest='ird', type=str, help="Path to .ird file", required=True)
   args = parser.parse_args()
 
   core.decrypt(args)