Merge branch 'master' of ssh://leap.se/leap_client

1 files changed, 178 insertions, 0 deletions

diff --git a/src/leap/services/eip/eipbootstrapper.py b/src/leap/services/eip/eipbootstrapper.py
new file mode 100644
index 00000000..b2af0aea
--- /dev/null
+++ b/src/leap/services/eip/eipbootstrapper.py
@@ -0,0 +1,178 @@
+# -*- coding: utf-8 -*-
+# eipbootstrapper.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+EIP bootstrapping
+"""
+
+import logging
+import os
+
+from PySide import QtCore
+
+from leap.common.check import leap_assert, leap_assert_type
+from leap.common import certs
+from leap.common.files import check_and_fix_urw_only, get_mtime, mkdir_p
+from leap.config.providerconfig import ProviderConfig
+from leap.crypto.srpauth import SRPAuth
+from leap.services.eip.eipconfig import EIPConfig
+from leap.util.request_helpers import get_content
+from leap.services.abstractbootstrapper import AbstractBootstrapper
+
+logger = logging.getLogger(__name__)
+
+
+class EIPBootstrapper(AbstractBootstrapper):
+    """
+    Sets up EIP for a provider a series of checks and emits signals
+    after they are passed.
+    If a check fails, the subsequent checks are not executed
+    """
+
+    # All dicts returned are of the form
+    # {"passed": bool, "error": str}
+    download_config = QtCore.Signal(dict)
+    download_client_certificate = QtCore.Signal(dict)
+
+    def __init__(self):
+        AbstractBootstrapper.__init__(self)
+
+        self._provider_config = None
+        self._eip_config = None
+        self._download_if_needed = False
+
+    def _download_config(self, *args):
+        """
+        Downloads the EIP config for the given provider
+        """
+
+        leap_assert(self._provider_config,
+                    "We need a provider configuration!")
+
+        logger.debug("Downloading EIP config for %s" %
+                     (self._provider_config.get_domain(),))
+
+        self._eip_config = EIPConfig()
+
+        headers = {}
+        mtime = get_mtime(os.path.join(self._eip_config
+                                       .get_path_prefix(),
+                                       "leap",
+                                       "providers",
+                                       self._provider_config.get_domain(),
+                                       "eip-service.json"))
+
+        if self._download_if_needed and mtime:
+            headers['if-modified-since'] = mtime
+
+        # there is some confusion with this uri,
+        # it's in 1/config/eip, config/eip and config/1/eip...
+        config_uri = "%s/%s/config/eip-service.json" % (
+            self._provider_config.get_api_uri(),
+            self._provider_config.get_api_version())
+        logger.debug('Downloading eip config from: %s' % config_uri)
+
+        res = self._session.get(config_uri,
+                                verify=self._provider_config
+                                .get_ca_cert_path(),
+                                headers=headers)
+        res.raise_for_status()
+
+        # Not modified
+        if res.status_code == 304:
+            logger.debug("EIP definition has not been modified")
+        else:
+            eip_definition, mtime = get_content(res)
+
+            self._eip_config.load(data=eip_definition, mtime=mtime)
+            self._eip_config.save(["leap",
+                                   "providers",
+                                   self._provider_config.get_domain(),
+                                   "eip-service.json"])
+
+    def _download_client_certificates(self, *args):
+        """
+        Downloads the EIP client certificate for the given provider
+        """
+        leap_assert(self._provider_config, "We need a provider configuration!")
+        leap_assert(self._eip_config, "We need an eip configuration!")
+
+        logger.debug("Downloading EIP client certificate for %s" %
+                     (self._provider_config.get_domain(),))
+
+        client_cert_path = self._eip_config.\
+            get_client_cert_path(self._provider_config,
+                                 about_to_download=True)
+
+        # For re-download if something is wrong with the cert
+        self._download_if_needed = self._download_if_needed and \
+            not certs.should_redownload(client_cert_path)
+
+        if self._download_if_needed and \
+                os.path.exists(client_cert_path):
+            check_and_fix_urw_only(client_cert_path)
+            return
+
+        srp_auth = SRPAuth(self._provider_config)
+        session_id = srp_auth.get_session_id()
+        cookies = None
+        if session_id:
+            cookies = {"_session_id": session_id}
+        cert_uri = "%s/%s/cert" % (
+            self._provider_config.get_api_uri(),
+            self._provider_config.get_api_version())
+        logger.debug('getting cert from uri: %s' % cert_uri)
+        res = self._session.get(cert_uri,
+                                verify=self._provider_config
+                                .get_ca_cert_path(),
+                                cookies=cookies)
+        res.raise_for_status()
+        client_cert = res.content
+
+        if not certs.is_valid_pemfile(client_cert):
+            raise Exception(self.tr("The downloaded certificate is not a "
+                                    "valid PEM file"))
+
+        mkdir_p(os.path.dirname(client_cert_path))
+
+        with open(client_cert_path, "w") as f:
+            f.write(client_cert)
+
+        check_and_fix_urw_only(client_cert_path)
+
+    def run_eip_setup_checks(self,
+                             provider_config,
+                             download_if_needed=False):
+        """
+        Starts the checks needed for a new eip setup
+
+        :param provider_config: Provider configuration
+        :type provider_config: ProviderConfig
+        """
+        leap_assert(provider_config, "We need a provider config!")
+        leap_assert_type(provider_config, ProviderConfig)
+
+        self._provider_config = provider_config
+        self._download_if_needed = download_if_needed
+
+        cb_chain = [
+            (self._download_config, self.download_config),
+            (self._download_client_certificates,
+             self.download_client_certificate)
+        ]
+
+        return self.addCallbackChain(cb_chain)