Fix adb.partitions listing

pwnlib/adb/adb.py

@@ -951,12 +951,51 @@ def data(self):
         with log.waitfor('Fetching %r partition (%s)' % (self.name, self.path)):
             return read(self.path)
 
+@with_device
+def walk(top, topdown=True):
+    join = os.path.join
+    isdir = lambda x: stat.S_ISDIR(x['mode'])
+    client = Client()
+    names = client.list(top)
+
+    dirs, nondirs = [], []
+    for name, metadata in names.items():
+        if isdir(metadata):
+            dirs.append(name)
+        else:
+            nondirs.append(name)
+
+    if topdown:
+        yield top, dirs, nondirs
+    for name in dirs:
+        new_path = join(top, name)
+        for x in walk(new_path, topdown):
+            yield x
+    if not topdown:
+        yield top, dirs, nondirs
+
+@with_device
+def find(top, name):
+    for root, dirs, files in walk(top):
+        if name in files or name in dirs:
+            yield os.path.join(root, name)
+
+@with_device
+def readlink(path):
+    path = process(['readlink', path]).recvall()
+
+    # Readlink will emit a single newline
+    # We can't use the '-n' flag since old versions don't support it
+    if path.endswith('\n'):
+        path = path[:-1]
+
+    return path
+
 class Partitions(object):
     @property
     @context.quiet
     def by_name_dir(self):
-        cmd = ['shell','find /dev/block/platform -type d -name by-name']
-        return adb(cmd).strip()
+        return next(find('/dev/block/platform','by-name'))
 
     @context.quiet
     def __dir__(self):
@@ -972,6 +1011,7 @@ def __iter__(self):
             yield name
 
     @context.quiet
+    @with_device
     def __getattr__(self, attr):
         for name in self:
             if name == attr:
@@ -982,7 +1022,7 @@ def __getattr__(self, attr):
         path = os.path.join(self.by_name_dir, name)
 
         # Find the actual path of the device
-        devpath = process(['readlink', '-n', path]).recvall()
+        devpath = readlink(path)
         devname = os.path.basename(devpath)
 
         # Get the size of the partition