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Make KoboStore proxying more robust.

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* Add a timeout to prevent hanging when the KoboStore isn't reachable.
* Add back a the dummy auth implementation for when proxying is
disabled.
* Return the dummy auth response as a fallback when failing to contact
the KoboStore.
* Don't contact the KoboStore during the /sync API call when proxying is
disabled.
pull/1201/head
Michael Shavit 5 years ago
parent 050feed5dc
commit df3eb40e3c
1 changed files with 107 additions and 68 deletions
Show Stats Download Patch File Download Diff File

175
cps/kobo.py
Unescape Escape View File

@ -73,8 +73,26 @@ CONNECTION_SPECIFIC_HEADERS = [
def get_kobo_activated():
return config.config_kobo_sync
def redirect_or_proxy_request(proxy=False):
if config.config_kobo_proxy or proxy == True:
def make_request_to_kobo_store(sync_token=None):
outgoing_headers = Headers(request.headers)
outgoing_headers.remove("Host")
if sync_token:
sync_token.set_kobo_store_header(outgoing_headers)
store_response = requests.request(
method=request.method,
url=get_store_url_for_current_request(),
headers=outgoing_headers,
data=request.get_data(),
allow_redirects=False,
timeout=(2, 10)
)
return store_response
def redirect_or_proxy_request():
if config.config_kobo_proxy:
if request.method == "GET":
return redirect(get_store_url_for_current_request(), 307)
if request.method == "DELETE":
@ -82,15 +100,7 @@ def redirect_or_proxy_request(proxy=False):
return make_response(jsonify({}))
else:
# The Kobo device turns other request types into GET requests on redirects, so we instead proxy to the Kobo store ourselves.
outgoing_headers = Headers(request.headers)
outgoing_headers.remove("Host")
store_response = requests.request(
method=request.method,
url=get_store_url_for_current_request(),
headers=outgoing_headers,
data=request.get_data(),
allow_redirects=False,
)
store_response = make_request_to_kobo_store()
response_headers = store_response.headers
for header_key in CONNECTION_SPECIFIC_HEADERS:
@ -102,6 +112,7 @@ def redirect_or_proxy_request(proxy=False):
else:
return make_response(jsonify({}))
@kobo.route("/v1/library/sync")
@requires_kobo_auth
@download_required
@ -160,35 +171,24 @@ def HandleSyncRequest():
def generate_sync_response(request, sync_token, entitlements):
# We first merge in sync results from the official Kobo store.
outgoing_headers = Headers(request.headers)
outgoing_headers.remove("Host")
sync_token.set_kobo_store_header(outgoing_headers)
store_response = requests.request(
method=request.method,
url=get_store_url_for_current_request(),
headers=outgoing_headers,
data=request.get_data(),
)
extra_headers = {}
if config.config_kobo_proxy:
# Merge in sync results from the official Kobo store.
try:
store_response = make_request_to_kobo_store(sync_token)
store_entitlements = store_response.json()
entitlements += store_entitlements
sync_token.merge_from_store_response(store_response)
extra_headers["x-kobo-sync"] = store_response.headers.get("x-kobo-sync")
extra_headers["x-kobo-sync-mode"] = store_response.headers.get("x-kobo-sync-mode")
extra_headers["x-kobo-recent-reads"] = store_response.headers.get("x-kobo-recent-reads")
store_entitlements = store_response.json()
entitlements += store_entitlements
sync_token.merge_from_store_response(store_response)
response = make_response(jsonify(entitlements))
sync_token.to_headers(response.headers)
try:
# These headers could probably use some more investigation.
response.headers["x-kobo-sync"] = store_response.headers["x-kobo-sync"]
response.headers["x-kobo-sync-mode"] = store_response.headers[
"x-kobo-sync-mode"
]
response.headers["x-kobo-recent-reads"] = store_response.headers[
"x-kobo-recent-reads"
]
except KeyError:
pass
except Exception as e:
log.error("Failed to receive or parse response from Kobo's sync endpoint: " + str(e))
sync_token.to_headers(extra_headers)
response = make_response(jsonify(entitlements), extra_headers)
return response
@ -377,6 +377,7 @@ def HandleUnimplementedRequest(dummy=None, book_uuid=None, shelf_name=None, tag_
log.debug("Alternative Request received:")
return redirect_or_proxy_request()
# TODO: Implement the following routes
@kobo.route("/v1/user/loyalty/<dummy>", methods=["GET", "POST"])
@kobo.route("/v1/user/profile", methods=["GET", "POST"])
@ -384,9 +385,21 @@ def HandleUnimplementedRequest(dummy=None, book_uuid=None, shelf_name=None, tag_
@kobo.route("/v1/user/recommendations", methods=["GET", "POST"])
@kobo.route("/v1/analytics/<dummy>", methods=["GET", "POST"])
def HandleUserRequest(dummy=None):
log.debug("Unimplemented Request received: %s", request.base_url)
log.debug("Unimplemented User Request received: %s", request.base_url)
return redirect_or_proxy_request()
@kobo.route("/v1/products/<dummy>/prices", methods=["GET", "POST"])
@kobo.route("/v1/products/<dummy>/recommendations", methods=["GET", "POST"])
@kobo.route("/v1/products/<dummy>/nextread", methods=["GET", "POST"])
@kobo.route("/v1/products/<dummy>/reviews", methods=["GET", "POST"])
@kobo.route("/v1/products/books/<dummy>", methods=["GET", "POST"])
@kobo.route("/v1/products/dailydeal", methods=["GET", "POST"])
def HandleProductsRequest(dummy=None):
log.debug("Unimplemented Products Request received: %s", request.base_url)
return redirect_or_proxy_request()
@kobo.app_errorhandler(404)
def handle_404(err):
# This handler acts as a catch-all for endpoints that we don't have an interest in
@ -394,14 +407,45 @@ def handle_404(err):
log.debug("Unknown Request received: %s", request.base_url)
return redirect_or_proxy_request()
def make_calibre_web_auth_response():
# As described in kobo_auth.py, CalibreWeb doesn't make use practical use of this auth/device API call for
# authentation (nor for authorization). We return a dummy response just to keep the device happy.
return make_response(
jsonify(
{
"AccessToken": "abcde",
"RefreshToken": "abcde",
"TokenType": "Bearer",
"TrackingId": "abcde",
"UserKey": "abcdefgeh",
}
)
)
@kobo.route("/v1/auth/device", methods=["POST"])
def login_auth_token():
def HandleAuthRequest():
log.info('Auth')
return redirect_or_proxy_request(proxy=True)
if config.config_kobo_proxy:
try:
return redirect_or_proxy_request()
except:
log.error("Failed to receive or parse response from Kobo's auth endpoint. Falling back to un-proxied mode.")
return make_calibre_web_auth_response()
def make_calibre_web_init_response(calibre_web_url):
resources = NATIVE_KOBO_RESOURCES(calibre_web_url)
response = make_response(jsonify({"Resources": resources}))
response.headers["x-kobo-apitoken"] = "e30="
return response
@kobo.route("/v1/initialization")
@requires_kobo_auth
def HandleInitRequest():
log.info('Init')
if not current_app.wsgi_app.is_proxied:
log.debug('Kobo: Received unproxied request, changed request port to server port')
calibre_web_url = "{url_scheme}://{url_base}:{url_port}".format(
@ -411,34 +455,29 @@ def HandleInitRequest():
)
else:
calibre_web_url = url_for("web.index", _external=True).strip("/")
if config.config_kobo_proxy:
outgoing_headers = Headers(request.headers)
outgoing_headers.remove("Host")
store_response = requests.request(
method=request.method,
url=get_store_url_for_current_request(),
headers=outgoing_headers,
data=request.get_data(),
)
store_response_json = store_response.json()
if "Resources" in store_response_json:
kobo_resources = store_response_json["Resources"]
# calibre_web_url = url_for("web.index", _external=True).strip("/")
kobo_resources["image_host"] = calibre_web_url
kobo_resources["image_url_quality_template"] = unquote(calibre_web_url + url_for("kobo.HandleCoverImageRequest",
auth_token = kobo_auth.get_auth_token(),
book_uuid="{ImageId}"))
kobo_resources["image_url_template"] = unquote(calibre_web_url + url_for("kobo.HandleCoverImageRequest",
auth_token = kobo_auth.get_auth_token(),
book_uuid="{ImageId}"))
if config.config_kobo_proxy:
try:
store_response = make_request_to_kobo_store()
store_response_json = store_response.json()
if "Resources" in store_response_json:
kobo_resources = store_response_json["Resources"]
# calibre_web_url = url_for("web.index", _external=True).strip("/")
kobo_resources["image_host"] = calibre_web_url
kobo_resources["image_url_quality_template"] = unquote(calibre_web_url + url_for("kobo.HandleCoverImageRequest",
auth_token = kobo_auth.get_auth_token(),
book_uuid="{ImageId}"))
kobo_resources["image_url_template"] = unquote(calibre_web_url + url_for("kobo.HandleCoverImageRequest",
auth_token = kobo_auth.get_auth_token(),
book_uuid="{ImageId}"))
return make_response(store_response_json, store_response.status_code)
except:
log.error("Failed to receive or parse response from Kobo's init endpoint. Falling back to un-proxied mode.")
return make_calibre_web_init_response(calibre_web_url)
return make_response(store_response_json, store_response.status_code)
else:
resources = NATIVE_KOBO_RESOURCES(calibre_web_url)
response = make_response(jsonify({"Resources": resources}))
response.headers["x-kobo-apitoken"] = "e30="
return response
def NATIVE_KOBO_RESOURCES(calibre_web_url):
return {

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