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Added incoming resource transfer size limits

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This commit is contained in:
Mark Qvist 2024-03-01 23:26:27 +01:00
parent 64050d39bf
commit 7ecd3c0d5e
2 changed files with 25 additions and 5 deletions
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26
LXMF/LXMRouter.py
View File

@ -32,7 +32,7 @@ class LXMRouter:
FASTEST_N_RANDOM_POOL = 2
PROPAGATION_LIMIT = 256
DELIVERY_LIMIT = 1024
DELIVERY_LIMIT = 1000
PR_PATH_TIMEOUT = 10
@ -970,7 +970,8 @@ class LXMRouter:
def delivery_link_established(self, link):
link.track_phy_stats(True)
link.set_packet_callback(self.delivery_packet)
link.set_resource_strategy(RNS.Link.ACCEPT_ALL)
link.set_resource_strategy(RNS.Link.ACCEPT_APP)
link.set_resource_callback(self.delivery_resource_advertised)
link.set_resource_started_callback(self.resource_transfer_began)
link.set_resource_concluded_callback(self.delivery_resource_concluded)
@ -980,6 +981,15 @@ class LXMRouter:
def resource_transfer_began(self, resource):
RNS.log("Transfer began for LXMF delivery resource "+str(resource), RNS.LOG_DEBUG)
def delivery_resource_advertised(self, resource):
size = resource.get_data_size()
limit = self.delivery_per_transfer_limit*1000
if limit != None and size > limit:
RNS.log("Rejecting "+RNS.prettysize(size)+" incoming LXMF delivery resource, since it exceeds the limit of "+RNS.prettysize(limit), RNS.LOG_DEBUG)
return False
else:
return True
def delivery_resource_concluded(self, resource):
RNS.log("Transfer concluded for LXMF delivery resource "+str(resource), RNS.LOG_DEBUG)
if resource.status == RNS.Resource.COMPLETE:
@ -1080,11 +1090,21 @@ class LXMRouter:
def propagation_link_established(self, link):
link.set_packet_callback(self.propagation_packet)
link.set_resource_strategy(RNS.Link.ACCEPT_ALL)
link.set_resource_strategy(RNS.Link.ACCEPT_APP)
link.set_resource_callback(self.propagation_resource_advertised)
link.set_resource_started_callback(self.resource_transfer_began)
link.set_resource_concluded_callback(self.propagation_resource_concluded)
self.active_propagation_links.append(link)
def propagation_resource_advertised(self, resource):
size = resource.get_data_size()
limit = self.propagation_per_transfer_limit*1000
if limit != None and size > limit:
RNS.log("Rejecting "+RNS.prettysize(size)+" incoming LXMF propagation resource, since it exceeds the limit of "+RNS.prettysize(limit), RNS.LOG_DEBUG)
return False
else:
return True
def propagation_packet(self, data, packet):
try:
if packet.destination_type != RNS.Destination.LINK:

4
LXMF/Utilities/lxmd.py
View File

@ -83,7 +83,7 @@ def apply_config():
if active_configuration["delivery_transfer_max_accepted_size"] < 0.38:
active_configuration["delivery_transfer_max_accepted_size"] = 0.38
else:
active_configuration["delivery_transfer_max_accepted_size"] = 1024
active_configuration["delivery_transfer_max_accepted_size"] = 1000
if "lxmf" in lxmd_config and "on_inbound" in lxmd_config["lxmf"]:
active_configuration["on_inbound"] = lxmd_config["lxmf"]["on_inbound"]
@ -526,7 +526,7 @@ announce_at_start = no
# this will be rejected before the transfer
# begins.
delivery_transfer_max_accepted_size = 1024
delivery_transfer_max_accepted_size = 1000
# You can configure an external program to be run
# every time a message is received. The program