forked from fidoman/PyFTN
/
ftnexport.py
982 lines (764 loc) · 32.3 KB
/
ftnexport.py
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"""
Message flow from database to links and users
"""
import xml.etree.ElementTree
import io
import traceback
import time
import zipfile
import os
from ftnconfig import suitable_charset, get_link_password, get_link_id, \
ADDRESS, PACKETTHRESHOLD, BUNDLETHRESHOLD, get_addr_id, get_addr, DOUTBOUND, addrdir, connectdb, \
EXPORTLOCK, PKTLOCK, BUNDLELOCK, TICLOCK, get_link_pkt_format, get_link_bundler
import ftnimport
import ftn.msg
import ftn.attr
from ftn.ftn import FTNFail, FTNWrongPassword
from stringutil import *
import postgresql.alock
# AUTOCOMMIT assumed
def get_subscribers(db, target, onlyvital=False):
""" query all subscribers including that who are subscribed to group of the target """
for r in db.prepare("""
with recursive all_groups(id, level) as
(
select $1::BIGINT, 0
union
select a.group, g.level+1 from addresses a, all_groups g where a.id = g.id
)
select s.subscriber, s.vital, g.level from subscriptions s, all_groups g
where s.target = g.id""" + (" and s.vital = True" if onlyvital else ""))(target):
yield r
def get_addrtree(db, addr):
for a in db.prepare("""
with recursive all_nested(id, level) as
(
select $1::BIGINT, 0
union
select a.id, n.level+1 from addresses a, all_nested n where a.group = n.id
)
select id from all_nested where level>0""")(addr):
yield a
def get_subscriber_messages_n(db, subscriber, domain):
""" get all subscribed addresses in specified domain and
fetch all messages with id>lastsent or if lastsent is None - with processed==0
Non-vital netmail subscription should be processed as echomail """
try:
query = db.Q_get_subscriber_messages_n
except AttributeError:
query = db.Q_get_subscriber_messages_n = db.prepare("""
with recursive allsubscription(id, target, dir) as
(
select s.id, s.target, 1 from subscriptions s, addresses a
where s.subscriber=$1 and s.vital=TRUE and s.target=a.id and a.domain=$2
Union
select s.id, a.id, 0 from allsubscription s, addresses a
where a.group = s.target
and (select count(id) from subscriptions where target=a.id) = 0
and a.domain = $2
)
select m.id, m.source, m.destination, m.msgid, m.header, m.body, m.origcharset, m.receivedfrom
from allsubscription alls, messages m
where m.processed=0 and m.destination=alls.target
order by m.id
;
""")
for m in query(subscriber, domain):
yield m
def get_direct_messages(db, subscriber):
try:
query = db.Q_get_direct_messages
except AttributeError:
query = db.Q_get_direct_messages = db.prepare("""
select m.id, m.source, m.destination, m.msgid, m.header, m.body, m.origcharset, m.receivedfrom
from messages m
where m.processed=8 and m.destination=$1
order by m.id
;
""")
for m in query(subscriber):
yield m
# SET cpu_tuple_cost = 0.2; set enable_hashjoin=false; set enable_mergejoin=false;
def get_subscriber_messages_e_heavy(db, subscriber, domain):
""" get all subscribed addresses in specified domain and
fetch all messages with id>lastsent or if lastsent is None - with processed==0 """
try:
query = db.Q_get_subscriber_messages_e
except AttributeError:
# seems checking that nobody is subscribed to subgroup is not needed for echomail
# and should be removed
query = db.Q_get_subscriber_messages_e = db.prepare("""
with recursive allsubscription(id, lastsent, target, dir) as
(
select id, lastsent, target, 1 from subscriptions where subscriber=$1
Union
select s.id, s.lastsent, a.id, 0 from allsubscription s, addresses a
where a.group = s.target
)
select m.id, m.source, m.destination, m.msgid, m.header, m.body, m.origcharset, m.receivedfrom, alls.id
from allsubscription alls, addresses sa, messages m
where sa.id=alls.target and sa.domain=$2 and
m.id>alls.lastsent and m.destination=alls.target and
m.receivedfrom<>$1 and m.processed<>5
order by m.id
;
""")
for m in query(subscriber, domain):
yield m
#id_msg, src, dest, msgid, header, body, recvfrom, withsubscr
def get_subscriber_messages_e(db, subscriber, domain):
for target_id, target_name, target_last, subs_id, subs_last in get_subscriptions_x(db, subscriber, domain):
if target_last>subs_last:
print ("something new", target_id, target_name, target_last, subs_id, subs_last)
for mid,msrc,mdst,mmsgid,mhdr,mbody,mchr,mrecvfrom,mproc in db.prepare(
"select m.id, m.source, m.destination, m.msgid, m.header, "
"m.body, m.origcharset, m.receivedfrom, m.processed from messages m where destination=$1 and id>$2 order by id")(target_id, subs_last):
yield mid, msrc, mdst, mmsgid, mhdr, mbody, mchr, mrecvfrom, subs_id, mproc
def _get_messages(db, dest_id, lastsent):
""" use lastsent >= -1 for fetching echomail
or lastsent = None for netmail """
try:
Q_get_subscription_messages_e = db.Q_get_subscription_messages_e
Q_get_subscription_messages_n = db.Q_get_subscription_messages_n
except AttributeError:
Q_get_subscription_messages_e = db.Q_get_subscription_messages_e = db.prepare(
"select m.id, s.domain, s.text, m.msgid, m.header, m.body, m.receivedfrom "
"from messages m, addresses s "
"where m.id>$2 and m.destination=$1"
"and m.source=s.id")
Q_get_subscription_messages_n = db.Q_get_subscription_messages_n = db.prepare(
"select m.id, s.domain, s.text, m.msgid, m.header, m.body, m.receivedfrom "
"from messages m, addresses s "
"where m.destination=$1 and m.processed=0"
"and m.source=s.id")
if lastsent is not None:
# echomail-style
for m in Q_get_subscription_messages_e(dest_id, lastsent):
yield m[0], db.FTN_backdomains[m[1]], m[2], m[3], m[4], m[5], m[6]
else:
# netmail-style
for m in Q_get_subscription_messages_n(dest_id):
yield m[0], db.FTN_backdomains[m[1]], m[2], m[3], m[4], m[5], m[6]
return
def update_subscription_watermark(db, subscription, id):
db.prepare("update subscriptions set lastsent=$1 where id=$2")(id, subscription)
def denormalize_message(orig, dest, msgid, header, body, charset, echodest=None, addvia=None, addseenby=[], addpath=None):
(origdom, origaddr) = orig
(destdom, destaddr) = dest
if charset is None:
# not imported message
overwriteCHRS = True
charset = suitable_charset(None, None, "encode", origdom, origaddr, destdom, destaddr) or 'utf-8'
else:
overwriteCHRS = False
#print(charset)
if origdom!="node":
raise FTNFail("message source must be node not %s"%origdom)
msg=ftn.msg.MSG()
nltail=len(body)
while(nltail>0 and body[nltail-1]=="\n"):
nltail-=1
try:
fname=(header.find("sendername").text or '').encode(charset)
tname=(header.find("recipientname").text or '').encode(charset)
msg.subj=(unclean_str(header.find("subject").text or '')).encode(charset)
msg.date=(header.find("date").text or '').encode(charset)
msg.body = body[:nltail].encode(charset).split(b"\n")
except UnicodeEncodeError:
try:
charset = "cp437"
fname=(header.find("sendername").text or '').encode(charset)
tname=(header.find("recipientname").text or '').encode(charset)
msg.subj=(unclean_str(header.find("subject").text or '')).encode(charset)
msg.date=(header.find("date").text or '').encode(charset)
msg.body = body[:nltail].encode(charset).split(b"\n")
except UnicodeEncodeError:
charset = "utf-8"
fname=(header.find("sendername").text or '').encode(charset)
tname=(header.find("recipientname").text or '').encode(charset)
msg.subj=(unclean_str(header.find("subject").text or '')).encode(charset)
msg.date=(header.find("date").text or '').encode(charset)
msg.body = body[:nltail].encode(charset).split(b"\n")
#print(fname, tname, subj, date)
#print(xml.etree.ElementTree.tostring(header, encoding="utf-8").decode("utf-8"))
ftnheader=header.find("FTN")
# print(xml.etree.ElementTree.tostring(ftnheader).decode("utf-8"))
msg.kludge = {}
for kludge in ftnheader.findall("KLUDGE"):
#print(kludge.get("name"), kludge.get("value"))
msg.kludge[kludge.get("name").encode(charset)] = kludge.get("value").encode(charset)
# overwrite CHRS kludge
if overwriteCHRS:
if charset=="fido_relics":
if b"CHRS:" in msg.kludge:
del msg.kludge[b"CHRS:"]
elif charset!="utf-8":
msg.kludge[b"CHRS:"] = (charset.upper() + " 2").encode("ascii")
else:
msg.kludge[b"CHRS:"] = (charset.upper() + " 4").encode("ascii")
# print(msg.kludge)
msg.via = [] # netmail only
for via in ftnheader.findall("VIA"):
for viak, viav in via.attrib.items():
msg.via.append((viak.encode(charset), viav.encode(charset)))
if addvia:
msg.via.append((b"Via", addvia.encode(charset)))
# print(msg.via)
msg.path = []
msg.seenby = set() # echomail only
if destdom=="echo":
dest_zone=ftn.addr.str2addr(echodest)[0]
my_zone=ftn.addr.str2addr(addpath)[0] # addpath should be this node's address
for zpth in ftnheader.findall("ZPTH"):
zpth_record = zpth.get("record")
msg.add_zpth(zpth_record)
if my_zone==dest_zone:
for path in ftnheader.findall("PATH"):
#print(path.get("record"))
msg.add_path(path.get("record"))
if addpath:
#print("additional path", addpath)
pathaddr=ftn.addr.str2addr(addpath)
if not pathaddr[3]:
msg.add_path(addpath)
else:
for path in ftnheader.findall("PATH"):
pathaddr=ftn.addr.str2addr(path.get("record"))
msg.add_zpth(ftn.addr.addr2str((my_zone, pathaddr[1], pathaddr[2], None)))
if addpath:
#print("additional path", addpath)
pathaddr=ftn.addr.str2addr(addpath)
if not pathaddr[3]:
msg.add_zpth(ftn.addr.addr2str((my_zone, pathaddr[1], pathaddr[2], None)))
if my_zone==dest_zone:
for seenby in ftnheader.findall("SEEN-BY"):
seenbyaddr = (seenby.get("zone"), seenby.get("net"), seenby.get("node"), seenby.get("point"))
#print(seenbyaddr)
msg.add_seenby(ftn.addr.addr2str(seenbyaddr))
else:
pass # drop old seen-by's
for seenby in addseenby:
#print("additional seenby", seenby)
sbaddr=ftn.addr.str2addr(seenby)
if sbaddr[0]==dest_zone and not sbaddr[3]:
msg.add_seenby(seenby)
msg.orig=(fname, ftn.addr.str2addr(origaddr))
if destdom=="node":
msg.dest=(tname, ftn.addr.str2addr(destaddr))
msg.area=None
elif destdom=="echo":
#print("packing echomail msg to "+echodest)
msg.dest=(tname, ftn.addr.str2addr(echodest))
msg.area=destaddr.encode(charset)
else:
raise FTNFail("do not know how to pack message to "+destdom)
msg.attr=0
if destdom=="node":
attrs=[]
for attr in ftnheader.findall("ATTR"):
attrs.append(attr.get("id"))
try:
msg.attr = ftn.attr.text_to_binary(attrs)
except:
traceback.print_exc()
msg.cost=0
msg.readcount=0
msg.replyto=0
msg.nextreply=0
#print(msg.__dict__)
return msg, charset
# ---
class filecommitter:
def __init__(self, filename):
self.filename = filename
def show(self):
print ("file committer:", self.filename)
def commit(self):
print ("commit file", repr(self.filename))
os.unlink(self.filename)
class netmailcommitter:
def __init__(self, newstatus=2):
self.newstatus=newstatus
self.msglist=set()
self.msgarqlist=[]
self.db = connectdb()
def show(self):
print ("netmail committer:", self.newstatus, self.msglist)
def add(self, d):
if type(d) is netmailcommitter:
if self.msglist.intersection(d.msglist):
raise Exception("double export of netmail message")
self.msglist.update(d.msglist)
self.msgarqlist.extend(d.msgarqlist)
else:
if d[0] in self.msglist:
raise Exception("double export of netmail message")
self.msglist.add(d[0])
if d[1]:
self.msgarqlist.append(d[1])
def commit(self):
try:
with ftnimport.session(self.db) as sess:
for addr, name, deliverto, msg, charset in self.msgarqlist:
print("send audit request to", addr)
sess.send_message("Audit tracker", addr, name, None, "Audit tracking response", """
This reply confirms that your message has been successfully delivered
to node %s
*******************************************************************************
%s
*******************************************************************************
"""%(deliverto, msg.as_str(shorten=True).decode(charset)))
except:
print("error sending ARq reply")
traceback.print_exc()
for msg in self.msglist:
self.db.prepare("update messages set processed=$2 where id=$1")(msg,self.newstatus)
print("commit msg #%d"%msg)
self.msglist=set()
self.msgarqlist=[]
class echomailcommitter:
def __init__(self):
self.lasts = {} # subscription: lastsent
self.db = connectdb()
def add_one(self, k, v):
if k in self.lasts and v<=self.lasts[k]:
raise Exception("non-monotonic echomail export")
self.lasts[k] = v
def add(self, d):
if type(d) is echomailcommitter:
for k, v in d.lasts.items():
self.add_one(k, v)
else:
self.add_one(*d)
def commit(self):
for k, v in self.lasts.items():
self.db.prepare("update subscriptions set lastsent=$1 where id=$2")(v, k)
print("commit subscription %d up to message #%d"%(k, v))
self.lasts = {}
def show(self):
print("echomail committer:", self.lasts)
# --- file export ---
def get_pkt_n(db, link_id):
with postgresql.alock.ExclusiveLock(db, ((PKTLOCK, link_id))):
r = db.prepare("select pktn from links where id=$1").first(link_id)
db.prepare("update links set pktn=pktn+1 where id=$1")(link_id)
return r
def get_bundle_n(db, link_id):
with postgresql.alock.ExclusiveLock(db, ((BUNDLELOCK, link_id))):
r = db.prepare("select bundlen from links where id=$1").first(link_id)
db.prepare("update links set bundlen=bundlen+1 where id=$1")(link_id)
return r
def get_tic_n(db, link_id):
with postgresql.alock.ExclusiveLock(db, ((TICLOCK, link_id))):
r = db.prepare("select ticn from links where id=$1").first(link_id)
db.prepare("update links set ticn=ticn+1 where id=$1")(link_id)
return r
def file_export(db, address, password, what):
""" This generator fetches messages from database and
yields objects, that contain the file information
and instructions how to commit to db inforamtion
about successful message delivery """
# first netmail
# then requested file
# then echoes
# then filebox
# and at last fileechoes
print("export to", repr(address), repr(password), repr(what))
if password != (get_link_password(db, address) or ""):
raise FTNWrongPassword()
print("password is correct" if password else "password is empty")
# WARNING!
# unprotected sessions never must do queries as it may result in leaking netmail
# if address of some hub is spoofed
addr_id = get_addr_id(db, db.FTN_domains["node"], address)
link_pkt_format = get_link_pkt_format(db, address)
link_bundler = get_link_bundler(db, address)
if password and ("netmail" in what):
explock = postgresql.alock.ExclusiveLock(db, ((EXPORTLOCK["netmail"], addr_id)))
if explock.acquire(False):
try:
print ("exporting netmail")
# only vital subscriptions is processed
# non-vital (CC) should be processed just like echomail
# set password in netmail packets
p = pktpacker(link_pkt_format, ADDRESS, address, get_link_password(db, address) or '', lambda: get_pkt_n(db, get_link_id(db, address)), lambda: netmailcommitter())
#..firstly send pkts in outbound
for id_msg, src, dest, msgid, header, body, origcharset, recvfrom in get_subscriber_messages_n(db, addr_id, db.FTN_domains["node"]):
print("netmail %d recvfrom %d pack to %s"%(id_msg, recvfrom, repr(address)))
# if exporting to utf8z always use UTF-8
if link_pkt_format == "utf8z":
origcharset = "utf-8"
myvia = "PyFTN " + ADDRESS + " " + time.asctime()
srca=db.prepare("select domain, text from addresses where id=$1").first(src)
dsta=db.prepare("select domain, text from addresses where id=$1").first(dest)
try:
msg, msgcharset = denormalize_message(
(db.FTN_backdomains[srca[0]], srca[1]),
(db.FTN_backdomains[dsta[0]], dsta[1]),
msgid, header, body, origcharset, address, addvia = myvia)
except:
raise Exception("denormalization error on message id=%d"%id_msg+"\n"+traceback.format_exc())
try:
print ("export msg attributes", msg.attr)
except:
traceback.print_exception()
if 'AuditRequest' in ftn.attr.binary_to_text(msg.attr):
audit_reply = (db.FTN_backdomains[srca[0]], srca[1]), header.find("sendername").text, address, msg, msgcharset
else:
audit_reply = None
for x in p.add_item(msg, (id_msg, audit_reply)): # add ARQ flag
yield x
for x in p.flush():
yield x
del p
finally:
explock.release()
else:
print ("could not acquire netmail lock")
if "direct" in what: # available for unprotected sessions
# export messages with processed==8 and destination==addr_id
explock = postgresql.alock.ExclusiveLock(db, ((EXPORTLOCK["netmail"], addr_id)))
if explock.acquire(False):
print ("exporting direct netmail")
# only vital subscriptions is processed
# non-vital (CC) should be processed just like echomail
# set password in netmail packets
link_id=get_link_id(db, address, withfailback=True)
p = pktpacker(link_pkt_format, ADDRESS, address, get_link_password(db, address) or '', lambda: get_pkt_n(db, link_id), lambda: netmailcommitter(newstatus=7))
#..firstly send pkts in outbound
for id_msg, src, dest, msgid, header, body, origcharset, recvfrom in get_direct_messages(db, addr_id):
print("direct netmail %d recvfrom %d pack to %s"%(id_msg, recvfrom, repr(address)))
# if exporting to utf8z always use UTF-8
if link_pkt_format == "utf8z":
origcharset = "utf-8"
myvia = "PyFTN " + ADDRESS + " DIRECT " + time.asctime()
srca=db.prepare("select domain, text from addresses where id=$1").first(src)
dsta=db.prepare("select domain, text from addresses where id=$1").first(dest)
try:
msg, msgcharset = denormalize_message(
(db.FTN_backdomains[srca[0]], srca[1]),
(db.FTN_backdomains[dsta[0]], dsta[1]),
msgid, header, body, origcharset, address, addvia = myvia)
except:
raise Exception("denormalization error on message id=%d"%id_msg+"\n"+traceback.format_exc())
try:
print ("export msg attributes", msg.attr)
except:
traceback.print_exception()
if 'AuditRequest' in ftn.attr.binary_to_text(msg.attr):
audit_reply = (db.FTN_backdomains[srca[0]], srca[1]), header.find("sendername").text, address, msg, msgcharset
else:
audit_reply = None
for x in p.add_item(msg, (id_msg, audit_reply)): # add ARQ flag
yield x
for x in p.flush():
yield x
del p
explock.release()
pass
if password and ("echomail" in what):
explock = postgresql.alock.ExclusiveLock(db, ((EXPORTLOCK["echomail"], addr_id)))
if explock.acquire(False):
try:
print ("exporting echomail")
#..firstly send bundles in outbound
#
if link_bundler:
p = pktpacker(link_pkt_format, ADDRESS, address, get_link_password(db, address) or '', lambda: get_pkt_n(db, get_link_id(db, address)), lambda: echomailcommitter(),
bundlepacker(link_bundler, address, lambda: get_bundle_n(db, get_link_id(db, address)), lambda: echomailcommitter()))
else:
p = pktpacker(link_pkt_format, ADDRESS, address, get_link_password(db, address) or '', lambda: get_pkt_n(db, get_link_id(db, address)), lambda: echomailcommitter())
subscache = {}
for id_msg, xxsrc, dest, msgid, header, body, origcharset, recvfrom, withsubscr, processed in get_subscriber_messages_e(db, addr_id, db.FTN_domains["echo"]):
will_export = True # do we really must send message or just update last_sent pointer
#print("echomail %d"%id_msg, repr(dest))
#print("dest %d recvfrom %s subscr %s pack to %s"%(dest, repr(recvfrom), repr(withsubscr), address))
# ignore src - for echomail it is just recv_from
# if exporting to utf8z always use UTF-8
if link_pkt_format == "utf8z":
origcharset = "utf-8"
if recvfrom == addr_id:
#print ("Message from this link, will not export")
will_export = False
if processed == 5:
#print ("Archived message, will not export")
will_export = False
# check commuter
subscriber_comm = db.FTN_commuter.get(withsubscr)
if subscriber_comm is not None: # must check as None==None => no export at all
# get subscription through what message was received
recvfrom_subscription = db.prepare("select id from subscriptions where target=$1 and subscriber=$2").first(sub_tart, m_recvfrom)
recvfrom_comm = db.FTN_commuter.get(recvfrom_subscription)
if recvfrom_comm == subscriber_comm:
print("commuter %d - %d, will not export"%(withsubscr, recvfrom_subscription))
will_export = False
# continue # do not forward between subscriptions in one commuter group (e.g. two uplinks)
if dest in subscache:
subscribers = subscache[dest]
else:
subscribers = db.prepare("select a.domain, a.text from subscriptions s, addresses a where s.target=$1 and s.subscriber=a.id")(dest)
if not all([x[0]==db.FTN_domains["node"] for x in subscribers]):
raise FTNFail("subscribers from wrong domain for "+str(sub_targ))
# print(sub_id, sub_targ, "all subscribers:", [x[1] for x in subscribers])
subscribers = subscache[dest] = [x[1] for x in subscribers]
#print("subscribers:", repr(subscribers))
# if withsubscr not in subscribers:
# raise Exception("strange: exporting to non-existent subscription", withsubscr)
dsta = db.prepare("select domain, text from addresses where id=$1").first(dest)
# modify path and seen-by
# seen-by's - get list of all subscribers of this target; add subscribers list
#... if go to another zone remove path and seen-by's and only add seen-by's of that zone -> ftnexport
if will_export: # create MSG else do not bother
try:
msg, msgcharset = denormalize_message(
("node", ADDRESS),
(db.FTN_backdomains[dsta[0]], dsta[1]),
msgid, header, body, origcharset, address, addseenby=subscribers, addpath=ADDRESS)
except:
raise Exception("denormalization error on message id=%d"%id_msg+"\n"+traceback.format_exc())
for x in p.add_item((msg if will_export else None), (withsubscr, id_msg)):
yield x
for x in p.flush():
yield x
finally:
explock.release()
else:
print("could not acquire echomail lock")
if password and ("filebox" in what):
explock = postgresql.alock.ExclusiveLock(db, ((EXPORTLOCK["filebox"], addr_id)))
if explock.acquire(False):
# ..send freq filebox
print ("exporting filebox")
dsend = addrdir(DOUTBOUND, address)
if os.path.isdir(dsend):
print ("exporting daemon outbound")
for f in os.listdir(dsend):
fname = os.path.join(dsend, f)
if os.path.isfile(fname):
obj = outfile()
obj.data = open(fname, "rb")
obj.filename = f
obj.length = os.path.getsize(fname)
yield obj, filecommitter(fname)
explock.release()
if password and ("fileecho" in what):
explock = postgresql.alock.ExclusiveLock(db, ((EXPORTLOCK["fileecho"], addr_id)))
if explock.acquire(False):
# ..send fileechoes
print ("exporting fileechoes (nothing here)")
pass #1/0
explock.release()
return
class outfile:
def commit(self):
self.commitdb()
# filename
# data
# length
def show(self):
print ("exported file",self.filename,self.length)
class pktpacker:
def __init__(self, format, me, node, passw, counter, commitgen, packto=None):
self.format = format
self.packet = None
self.node = node
self.me = me
self.packto = packto
self.counter = counter
self.commitgen = commitgen
self.passw = passw.encode("utf-8")[:8]
self.committer = None
def add_item(self, m, commitdata):
if m is not None:
if self.packet is None:
self.packet=ftn.pkt.PKT()
self.packet.password=self.passw
self.packet.source=ftn.addr.str2addr(self.me)
self.packet.destination=ftn.addr.str2addr(self.node)
self.packet.date=time.localtime()
self.packet.msg=[]
self.packet.approxlen=0
self.packet.msg.append(m)
self.packet.approxlen+=len(m.pack()) # double packing :(
if self.committer is None:
self.committer = self.commitgen()
# if m is not None it will be send else just last_sent will be updated
self.committer.add(commitdata)
if self.packet and self.packet.approxlen>PACKETTHRESHOLD:
for x in self.pack():
yield x
def pack(self):
if self.packet is not None:
p = outfile()
if self.format=='utf8z':
p.filename = "%08x.upkt"%self.counter()
else:
p.filename = "%08x.pkt"%self.counter()
print("PACKET %s"%p.filename)
p.data = io.BytesIO()
self.packet.save(p.data, format=self.format)
p.length = p.data.tell()
p.data.seek(0)
self.packet = None
else:
print("PACKET = None")
print("Committer:")
print(self.committer.show() if self.committer else "None")
p = None
if p or self.committer:
if self.packto:
for x in self.packto.add_item(p, self.committer):
yield x
else:
yield p, self.committer
self.committer = None
def flush(self):
for x in self.pack():
yield x
if self.packto:
for x in self.packto.flush():
yield x
class bundlepacker:
def __init__(self, bundler, destination, counter, commitgen, packto=None):
self.bundler = bundler
self.destination = destination
self.counter = counter
self.bundle = None
self.commitgen = commitgen
self.packto = packto
self.committer = None
def add_item(self, p, commitdata):
if p is not None:
if self.bundle is None:
fo = io.BytesIO()
self.bundle = (fo, zipfile.ZipFile(fo, "w", zipfile.ZIP_DEFLATED))
self.bundle[1].writestr(p.filename, p.data.read())
if self.committer is None:
self.committer = self.commitgen()
self.committer.add(commitdata)
if self.bundle and self.bundle[0].tell()>BUNDLETHRESHOLD:
for x in self.pack():
yield x
def pack(self):
if self.bundle is not None:
b = outfile()
zone, net, node, point = ftn.addr.str2addr(ADDRESS)
dzone, dnet, dnode, dpoint = ftn.addr.str2addr(self.destination)
if dpoint:
basename = "0000p%03x"%dpoint
else:
netd = net - dnet
noded = node - dnode
basename = "%04x%04x"%(netd%0x10000, noded%0x10000)
c = self.counter()
d = c%16
c = c//16
e = ["mo", "tu", "we", "th", "fr", "sa", "su"][c%7]
c = c//7
b.filename = "%s.%s%x"%(basename, e, d)
print("BUNDLE %s"%b.filename)
self.bundle[1].close()
b.data = self.bundle[0]
b.length = b.data.tell()
b.data.seek(0)
self.bundle = None
else:
print("BUNDLE = None")
print("Committer:")
print(self.committer.show() if self.committer else "None")
b = None
if b or self.committer:
if self.packto:
for x in self.packto.add_item(b, self.committer):
yield x
else:
yield b, self.committer
self.committer = None
def flush(self):
for x in self.pack():
yield x
if self.packto:
for x in self.packto.flush():
yield x
# --------------- auxiliary functions ---------------------
def get_node_subscriptions(db, subscriber, targetdomain, asuplink = False):
return [x[0] for x in db.prepare("select t.text, s.id, s.lastsent from subscriptions s, addresses sr, addresses t "
"where s.target=t.id and t.domain=$1 and s.subscriber=sr.id and sr.domain=$2 and sr.text=$3"
+ (" and s.vital = True" if asuplink else "") + " order by t.text")(db.FTN_domains[targetdomain], db.FTN_domains["node"], subscriber)]
def get_subscriptions_x(db, subscriber_id, targetdomain_id, asuplink = False):
return [x for x in db.prepare("select t.id, t.text, t.last, s.id, s.lastsent from subscriptions s, addresses t "
"where s.target=t.id and t.domain=$1 and s.subscriber=$2 and t.last is not NULL"
+ (" and s.vital = True" if asuplink else "") + " order by t.text")(targetdomain_id, subscriber_id)]
def get_all_targets(db, targetdomain):
return [x[0] for x in db.prepare("select t.text from addresses t where t.domain=$1 order by text")(db.FTN_domains[targetdomain])]
# --- NNTP ---
def nntp_list_active(db, newerthan=None):
group_q = db.prepare("select min(id), max(id) from messages where destination=$1")
if newerthan is None:
query = db.prepare("select t.id, t.text from addresses t "
"where t.domain=$1 order by text")(db.FTN_domains["echo"])
else:
query = db.prepare("select t.id, t.text from addresses t "
"where t.domain=$1 and created>=$2 order by text")(db.FTN_domains["echo"], newerthan)
for aid, atext in query:
low, high = group_q.first(aid) # new message always added at end; messages cannot be hidden
yield atext, low, high
def nntp_group(db, group):
aid=db.prepare("select id from addresses where text=$1").first(group)
if aid is None:
return None
return db.prepare("select count(id), min(id), max(id) from messages where destination=$1").first(aid)
def nntp_group_list(db, group, gte=None, lte=None):
aid=db.prepare("select id from addresses where text=$1").first(group)
if aid is None:
return None
criteria=""
if gte:
criteria+=" and id>=%d"%gte
if lte:
criteria+=" and id<=%d"%lte
for x in db.prepare("select id from messages where destination=$1"+criteria+" order by id")(aid):
yield x[0]
def nntp_next(db, group, msgn):
aid=db.prepare("select id from addresses where text=$1").first(group)
if aid is None:
return None
r = db.prepare("select id from messages where destination=$1 and id>$2"
"order by id asc limit 1 offset 0").first(aid, msgn)
if r is None:
return None
return r[0]
def nntp_prev(db, group, msgn):
aid=db.prepare("select id from addresses where text=$1").first(group)
if aid is None:
return None
r = db.prepare("select id from messages where destination=$1 and id<$2"
"order by id desc limit 1 offset 0").first(aid, msgn)
if r is None:
return None
return r[0]
def nntp_fetch(db, head, body, msgid=None, group=None, article=None):
return None
def nntp_msgid(db, group, msgn):
pass
# --- **** ---
def count_messages_to(db, address):
return int(db.prepare("select count(*) from messages where destination=$1")(address)[0][0])
def get_matching_targets(db, targetdomain, mask):
mask = mask.replace("+", "++").replace("%", "+%").replace("_", "+_").replace("*", "%").replace("?", "_")
return [x[0] for x in db.prepare("select t.text from addresses t where t.domain=$1 and t.text like $2 escape '+'")\
(db.FTN_domains[targetdomain], mask)]
def get_subnodes(db, addr):
return [x[0] for x in db.prepare("select s.text from addresses n, addresses s where s.group=n.id and n.text=$1 and n.domain=$2")(addr, db.FTN_domains["node"])]
def get_supernode(db, addr):
r = db.prepare("select s.text from addresses n, addresses s where s.id=n.group and n.text=$1 and n.domain=$2")(addr, db.FTN_domains["node"])
if len(r):
return r[0][0]
else:
return None
if __name__ == "__main__":
from ftnconfig import connectdb
# for s in get_node_subscriptions(connectdb(), "2:5020/4441", "echo"):
# if s.find("TEST")!=-1:
# print (s)
print (get_subnodes(connectdb(), '2:5020/733315'))