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Fixed "database disk image is malformed" error when sending a large number of books to idevices.

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Fixed _afc_file_read to continuing reading bytes until all bytes are
read up to the requested file length; the first read only returns the
first 0x400000 bytes, so any files larger than that were not being fully
read. The missing bytes were initialised to null in the target file,
resulting in a corrupt file (the local copy of the Marvin sqlite
database).
This commit is contained in:
Polyfun 2014-11-13 08:19:30 +00:00
parent 77ebeb6eea
commit 2792dbc37c
1 changed files with 22 additions and 14 deletions
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36
src/calibre/devices/idevice/libimobiledevice.py
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@ -284,22 +284,22 @@ class libiMobileDevice():
if handle is not None:
file_stats = self._afc_get_file_info(src)
file_size = int(file_stats['st_size'])
self._log("file_size: {:,} bytes".format(file_size))
self._log("file {0} file_size: {1:,} bytes".format(repr(src), file_size))
if file_size > BUFFER_SIZE:
bytes_remaining = file_size
while bytes_remaining:
if bytes_remaining > BUFFER_SIZE:
self._log("copying {:,} byte chunk".format(BUFFER_SIZE))
self._log("copying file {0} to {1}, {2:,} byte chunk".format(repr(src), dst.name, BUFFER_SIZE))
data = self._afc_file_read(handle, BUFFER_SIZE, mode)
dst.write(data)
bytes_remaining -= BUFFER_SIZE
else:
self._log("copying final {:,} bytes".format(bytes_remaining))
self._log("copying file {0} to {1}, final {2:,} bytes".format(repr(src), dst.name, bytes_remaining))
data = self._afc_file_read(handle, bytes_remaining, mode)
dst.write(data)
bytes_remaining = 0
else:
self._log("copying {:,} bytes".format(file_size))
self._log("copying file {0} to {1}, {2:,} bytes".format(repr(src), dst.name, file_size))
data = self._afc_file_read(handle, file_size, mode)
dst.write(data)
@ -308,6 +308,7 @@ class libiMobileDevice():
# Update timestamps to match
file_stats = self._afc_get_file_info(src)
self._log("copied file {0} ({1:,} bytes) to file '{2}' ({3:,} bytes)".format(repr(src), file_size, dst.name, os.path.getsize(dst.name)))
os.utime(dst.name, (file_stats['st_mtime'], file_stats['st_mtime']))
else:
@ -903,22 +904,28 @@ class libiMobileDevice():
bytes_read = c_uint(0)
bytes_remaining = size
if 'b' in mode:
data = bytearray(size)
datatype = c_char * size
error = self.lib.afc_file_read(byref(self.afc),
handle,
byref(datatype.from_buffer(data)),
size,
byref(bytes_read)) & 0xFFFF
if error:
self._log_error(" ERROR: {0} handle:{1}".format(self._afc_error(error), handle))
while bytes_remaining > 0:
error = self.lib.afc_file_read(byref(self.afc),
handle,
byref(datatype.from_buffer(data), size - bytes_remaining),
bytes_remaining,
byref(bytes_read)) & 0xFFFF
if error:
self._log_error(" ERROR: {0} handle:{1}".format(self._afc_error(error), handle))
bytes_remaining -= bytes_read.value
bytes_read = c_uint(0)
return data
else:
data = create_string_buffer(size)
error = self.lib.afc_file_read(byref(self.afc), handle, byref(data), size, byref(bytes_read))
if error:
self._log_error(" ERROR: {0} handle:{1}".format(self._afc_error(error), handle))
while bytes_remaining > 0:
error = self.lib.afc_file_read(byref(self.afc), handle, byref(data, size - bytes_remaining), bytes_remaining, byref(bytes_read))
if error:
self._log_error(" ERROR: {0} handle:{1}".format(self._afc_error(error), handle))
bytes_remaining -= bytes_read.value
return data.value
def _afc_file_write(self, handle, content, mode='w'):
@ -1914,3 +1921,4 @@ class libiMobileDevice():
def __null(self, *args, **kwargs):
pass