# -*- coding: utf-8 -*-
#
# Copyright 2010-2014 The pygit2 contributors
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
#
# In addition to the permissions in the GNU General Public License,
# the authors give you unlimited permission to link the compiled
# version of this file into combinations with other programs,
# and to distribute those combinations without any restriction
# coming from the use of this file. (The General Public License
# restrictions do apply in other respects; for example, they cover
# modification of the file, and distribution when not linked into
# a combined executable.)
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to
# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
# Import from the future
from __future__ import absolute_import
# Import from pygit2
from _pygit2 import Oid
from .errors import check_error, GitError
from .ffi import ffi, C
from .refspec import Refspec
from .utils import to_bytes, strarray_to_strings, strings_to_strarray
def maybe_string(ptr):
if not ptr:
return None
return ffi.string(ptr).decode()
class TransferProgress(object):
"""Progress downloading and indexing data during a fetch"""
def __init__(self, tp):
self.total_objects = tp.total_objects
"""Total number of objects to download"""
self.indexed_objects = tp.indexed_objects
"""Objects which have been indexed"""
self.received_objects = tp.received_objects
"""Objects which have been received up to now"""
self.local_objects = tp.local_objects
"""Local objects which were used to fix the thin pack"""
self.total_deltas = tp.total_deltas
"""Total number of deltas in the pack"""
self.indexed_deltas = tp.indexed_deltas
"""Deltas which have been indexed"""
self.received_bytes = tp.received_bytes
""""Number of bytes received up to now"""
class Remote(object):
def sideband_progress(self, string):
"""Progress output callback
Override this function with your own progress reporting function
:param str string: Progress otuput from the remote
"""
pass
def credentials(self, url, username_from_url, allowed_types):
"""Credentials callback
If the remote server requires authentication, this function will
be called and its return value used for authentication. Override
it if you want to be able to perform authentication.
Parameters:
- url (str) -- The url of the remote.
- username_from_url (str or None) -- Username extracted from the url,
if any.
- allowed_types (int) -- Credential types supported by the remote.
Return value: credential
"""
pass
def transfer_progress(self, stats):
"""Transfer progress callback
Override with your own function to report transfer progress.
:param TransferProgress stats: The progress up to now
"""
pass
def update_tips(self, refname, old, new):
"""Update tips callabck
Override with your own function to report reference updates
:param str refname: the name of the reference that's being updated
:param Oid old: the reference's old value
:param Oid new: the reference's new value
"""
def __init__(self, repo, ptr):
"""The constructor is for internal use only"""
self._repo = repo
self._remote = ptr
self._stored_exception = None
def __del__(self):
C.git_remote_free(self._remote)
@property
def name(self):
"""Name of the remote"""
return maybe_string(C.git_remote_name(self._remote))
def rename(self, new_name):
"""Rename this remote
Returns a list of fetch refspecs which were not in the standard format
and thus could not be remapped
"""
if not new_name:
raise ValueError("New remote name must be a non-empty string")
problems = ffi.new('git_strarray *')
err = C.git_remote_rename(problems, self._remote, to_bytes(new_name))
check_error(err)
ret = strarray_to_strings(problems)
C.git_strarray_free(problems)
return ret
@property
def url(self):
"""Url of the remote"""
return maybe_string(C.git_remote_url(self._remote))
@url.setter
def url(self, value):
err = C.git_remote_set_url(self._remote, to_bytes(value))
check_error(err)
@property
def push_url(self):
"""Push url of the remote"""
return maybe_string(C.git_remote_pushurl(self._remote))
@push_url.setter
def push_url(self, value):
err = C.git_remote_set_pushurl(self._remote, to_bytes(value))
check_error(err)
def save(self):
"""save()
Save a remote to its repository's configuration"""
err = C.git_remote_save(self._remote)
check_error(err)
def fetch(self, signature=None, message=None):
"""fetch(signature, message) -> TransferProgress
Perform a fetch against this remote.
"""
# Get the default callbacks first
defaultcallbacks = ffi.new('git_remote_callbacks *')
err = C.git_remote_init_callbacks(defaultcallbacks, 1)
check_error(err)
# Build custom callback structure
callbacks = ffi.new('git_remote_callbacks *')
callbacks.version = 1
callbacks.sideband_progress = self._sideband_progress_cb
callbacks.transfer_progress = self._transfer_progress_cb
callbacks.update_tips = self._update_tips_cb
callbacks.credentials = self._credentials_cb
# We need to make sure that this handle stays alive
self._self_handle = ffi.new_handle(self)
callbacks.payload = self._self_handle
err = C.git_remote_set_callbacks(self._remote, callbacks)
try:
check_error(err)
finally:
self._self_handle = None
if signature:
ptr = signature._pointer[:]
else:
ptr = ffi.NULL
self._stored_exception = None
try:
err = C.git_remote_fetch(self._remote, ptr, to_bytes(message))
if self._stored_exception:
raise self._stored_exception
check_error(err)
finally:
# Even on error, clear stored callbacks and reset to default
self._self_handle = None
err = C.git_remote_set_callbacks(self._remote, defaultcallbacks)
check_error(err)
return TransferProgress(C.git_remote_stats(self._remote))
@property
def refspec_count(self):
"""Total number of refspecs in this remote"""
return C.git_remote_refspec_count(self._remote)
def get_refspec(self, n):
"""get_refspec(n) -> Refspec
Return the refspec at the given position
"""
spec = C.git_remote_get_refspec(self._remote, n)
return Refspec(self, spec)
@property
def fetch_refspecs(self):
"""Refspecs that will be used for fetching"""
specs = ffi.new('git_strarray *')
err = C.git_remote_get_fetch_refspecs(specs, self._remote)
check_error(err)
return strarray_to_strings(specs)
@fetch_refspecs.setter
def fetch_refspecs(self, l):
arr, refs = strings_to_strarray(l)
err = C.git_remote_set_fetch_refspecs(self._remote, arr)
check_error(err)
@property
def push_refspecs(self):
"""Refspecs that will be used for pushing"""
specs = ffi.new('git_strarray *')
err = C.git_remote_get_push_refspecs(specs, self._remote)
check_error(err)
return strarray_to_strings(specs)
@push_refspecs.setter
def push_refspecs(self, l):
arr, refs = strings_to_strarray(l)
err = C.git_remote_set_push_refspecs(self._remote, arr)
check_error(err)
def add_fetch(self, spec):
"""add_fetch(refspec)
Add a fetch refspec to the remote"""
err = C.git_remote_add_fetch(self._remote, to_bytes(spec))
check_error(err)
def add_push(self, spec):
"""add_push(refspec)
Add a push refspec to the remote"""
err = C.git_remote_add_push(self._remote, to_bytes(spec))
check_error(err)
@ffi.callback("int (*cb)(const char *ref, const char *msg, void *data)")
def _push_cb(ref, msg, data):
self = ffi.from_handle(data)
if msg:
self._bad_message = ffi.string(msg).decode()
return 0
def push(self, spec, signature=None, message=None):
"""push(refspec, signature, message)
Push the given refspec to the remote. Raises ``GitError`` on error.
:param str spec: push refspec to use
:param Signature signature: signature to use when updating the tips
:param str message: message to use when updating the tips
"""
cpush = ffi.new('git_push **')
err = C.git_push_new(cpush, self._remote)
check_error(err)
push = cpush[0]
try:
err = C.git_push_add_refspec(push, to_bytes(spec))
check_error(err)
err = C.git_push_finish(push)
check_error(err)
if not C.git_push_unpack_ok(push):
raise GitError("remote failed to unpack objects")
err = C.git_push_status_foreach(push, self._push_cb,
ffi.new_handle(self))
check_error(err)
if hasattr(self, '_bad_message'):
raise GitError(self._bad_message)
if signature:
ptr = signature._pointer[:]
else:
ptr = ffi.NULL
err = C.git_push_update_tips(push, ptr, to_bytes(message))
check_error(err)
finally:
C.git_push_free(push)
# These functions exist to be called by the git_remote as
# callbacks. They proxy the call to whatever the user set
@ffi.callback('git_transfer_progress_cb')
def _transfer_progress_cb(stats_ptr, data):
self = ffi.from_handle(data)
if not hasattr(self, 'transfer_progress') \
or not self.transfer_progress:
return 0
try:
self.transfer_progress(TransferProgress(stats_ptr))
except Exception as e:
self._stored_exception = e
return C.GIT_EUSER
return 0
@ffi.callback('git_transport_message_cb')
def _sideband_progress_cb(string, length, data):
self = ffi.from_handle(data)
if not hasattr(self, 'progress') or not self.progress:
return 0
try:
s = ffi.string(string, length).decode()
self.progress(s)
except Exception as e:
self._stored_exception = e
return C.GIT_EUSER
return 0
@ffi.callback('int (*update_tips)(const char *refname, const git_oid *a,'
'const git_oid *b, void *data)')
def _update_tips_cb(refname, a, b, data):
self = ffi.from_handle(data)
if not hasattr(self, 'update_tips') or not self.update_tips:
return 0
try:
s = maybe_string(refname)
a = Oid(raw=bytes(ffi.buffer(a)[:]))
b = Oid(raw=bytes(ffi.buffer(b)[:]))
self.update_tips(s, a, b)
except Exception as e:
self._stored_exception = e
return C.GIT_EUSER
return 0
@ffi.callback('int (*credentials)(git_cred **cred, const char *url,'
'const char *username_from_url, unsigned int allowed_types,'
'void *data)')
def _credentials_cb(cred_out, url, username, allowed, data):
self = ffi.from_handle(data)
if not hasattr(self, 'credentials') or not self.credentials:
return 0
try:
ccred = get_credentials(self.credentials, url, username, allowed)
cred_out[0] = ccred[0]
except Exception as e:
self._stored_exception = e
return C.GIT_EUSER
return 0
def get_credentials(fn, url, username, allowed):
"""Call fn and return the credentials object"""
url_str = maybe_string(url)
username_str = maybe_string(username)
creds = fn(url_str, username_str, allowed)
if not hasattr(creds, 'credential_type') \
or not hasattr(creds, 'credential_tuple'):
raise TypeError("credential does not implement interface")
cred_type = creds.credential_type
if not (allowed & cred_type):
raise TypeError("invalid credential type")
ccred = ffi.new('git_cred **')
if cred_type == C.GIT_CREDTYPE_USERPASS_PLAINTEXT:
name, passwd = creds.credential_tuple
err = C.git_cred_userpass_plaintext_new(ccred, to_bytes(name),
to_bytes(passwd))
elif cred_type == C.GIT_CREDTYPE_SSH_KEY:
name, pubkey, privkey, passphrase = creds.credential_tuple
err = C.git_cred_ssh_key_new(ccred, to_bytes(name), to_bytes(pubkey),
to_bytes(privkey), to_bytes(passphrase))
else:
raise TypeError("unsupported credential type")
check_error(err)
return ccred