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Added fetch request jail option to rncp

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Mark Qvist 2024-05-28 20:58:20 +02:00
parent 1f6560619e
commit 3a163c6f09
1 changed files with 20 additions and 9 deletions
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29
RNS/Utilities/rncp.py
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@ -34,13 +34,14 @@ from RNS._version import __version__
APP_NAME = "rncp"
allow_all = False
allow_fetch = False
fetch_jail = None
allowed_identity_hashes = []
REQ_FETCH_NOT_ALLOWED = 0xF0
def listen(configdir, verbosity = 0, quietness = 0, allowed = [], display_identity = False,
limit = None, disable_auth = None, fetch_allowed = False, announce = False):
global allow_all, allow_fetch, allowed_identity_hashes
limit = None, disable_auth = None, fetch_allowed = False, jail = None, announce = False):
global allow_all, allow_fetch, allowed_identity_hashes, fetch_jail
from tempfile import TemporaryFile
allow_fetch = fetch_allowed
@ -51,6 +52,10 @@ def listen(configdir, verbosity = 0, quietness = 0, allowed = [], display_identi
targetloglevel = 3+verbosity-quietness
reticulum = RNS.Reticulum(configdir=configdir, loglevel=targetloglevel)
if jail != None:
fetch_jail = os.path.abspath(os.path.expanduser(jail))
RNS.log("Restricting fetch requests to paths under \""+fetch_jail+"\"", RNS.LOG_VERBOSE)
identity_path = RNS.Reticulum.identitypath+"/"+APP_NAME
if os.path.isfile(identity_path):
identity = RNS.Identity.from_file(identity_path)
@ -121,16 +126,20 @@ def listen(configdir, verbosity = 0, quietness = 0, allowed = [], display_identi
print("Warning: No allowed identities configured, rncp will not accept any files!")
def fetch_request(path, data, request_id, link_id, remote_identity, requested_at):
global allow_fetch
global allow_fetch, fetch_jail
if not allow_fetch:
return REQ_FETCH_NOT_ALLOWED
file_path = os.path.abspath(os.path.expanduser(data))
if fetch_jail:
if not file_path.startswith(jail):
return REQ_FETCH_NOT_ALLOWED
target_link = None
for link in RNS.Transport.active_links:
if link.link_id == link_id:
target_link = link
file_path = os.path.expanduser(data)
if not os.path.isfile(file_path):
RNS.log("Client-requested file not found: "+str(file_path), RNS.LOG_VERBOSE)
return False
@ -438,25 +447,25 @@ def fetch(configdir, verbosity = 0, quietness = 0, destination = None, file = No
if not silent: print("\r \r", end="")
print("Fetch request failed, fetching the file "+str(file)+" was not allowed by the remote")
link.teardown()
time.sleep(1)
time.sleep(0.15)
exit(0)
elif request_status == "not_found":
if not silent: print("\r \r", end="")
print("Fetch request failed, the file "+str(file)+" was not found on the remote")
link.teardown()
time.sleep(1)
time.sleep(0.15)
exit(0)
elif request_status == "remote_error":
if not silent: print("\r \r", end="")
print("Fetch request failed due to an error on the remote system")
link.teardown()
time.sleep(1)
time.sleep(0.15)
exit(0)
elif request_status == "unknown":
if not silent: print("\r \r", end="")
print("Fetch request failed due to an unknown error (probably not authorised)")
link.teardown()
time.sleep(1)
time.sleep(0.15)
exit(0)
elif request_status == "found":
if not silent: print("\r \r", end="")
@ -486,7 +495,7 @@ def fetch(configdir, verbosity = 0, quietness = 0, destination = None, file = No
else:
print("\r \r"+str(file)+" fetched from "+RNS.prettyhexrep(destination_hash))
link.teardown()
time.sleep(0.25)
time.sleep(0.15)
exit(0)
link.teardown()
@ -678,6 +687,7 @@ def main():
parser.add_argument("-l", '--listen', action='store_true', default=False, help="listen for incoming transfer requests")
parser.add_argument("-F", '--allow-fetch', action='store_true', default=False, help="allow authenticated clients to fetch files")
parser.add_argument("-f", '--fetch', action='store_true', default=False, help="fetch file from remote listener instead of sending")
parser.add_argument("-j", "--jail", metavar="path", action="store", default=None, help="restrict fetch requests to specified path", type=str)
parser.add_argument("-b", action='store', metavar="seconds", default=-1, help="announce interval, 0 to only announce at startup", type=int)
parser.add_argument('-a', metavar="allowed_hash", dest="allowed", action='append', help="allow this identity", type=str)
parser.add_argument('-n', '--no-auth', action='store_true', default=False, help="accept requests from anyone")
@ -695,6 +705,7 @@ def main():
quietness=args.quiet,
allowed = args.allowed,
fetch_allowed = args.allow_fetch,
jail = args.jail,
display_identity=args.print_identity,
# limit=args.limit,
disable_auth=args.no_auth,