[tor-bugs] #22099 [Core Tor/Tor]: begin_cell_parse and IPv6

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#22099: begin_cell_parse and IPv6
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     Reporter:  cypherpunks   |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+-----------------
 spec about IPV6 inside BEGIN cell -- ADDRPORT is made of ADDRESS | ':' |
 PORT | [00] where ADDRESS is IPv6 address surrounded by square brackets;
 and where PORT is a decimal integer between 1 and 65535, inclusive.

 begin_cell_parse can't parse IPV6 by tor_addr_port_split correctly. for
 example [2607:f8b0:4000:800::200e]:80 tor_addr_parse can't handle port and
 will return corrupted result in this case, addr_port_lookup can't handle
 (any bracketed) ipv6 part either. it's impossible to request IPv6
 connection without dns mafia.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22099>
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