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LookupServer+LibC: Pass IP addresses in binary

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Now that we no longer depend on the textual IPC format, we can pass IP addresses
in the format most code actually has and needs it: in binary. The only places we
actually have to deal with textual address representation is:

* When reading /etc/hosts, we have to parse textual addresses & convert them to
  binary;
* When doing reverse lookups, we have to form a pseudo-hostname of the form
  x.x.x.x.in-addr.arpa.

So we do the conversion in those two cases.

This also increases uniformity between how we handle A (IPv4 address) and other
resource record types. Namely, we now store the raw binary data as received from
a DNS server.
This commit is contained in:
Sergey Bugaev 2021-02-06 17:30:33 +03:00 • committed by Andreas Kling
parent 04ff46bff4
commit d8967e4dff
4 changed files with 12 additions and 19 deletions
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3
Userland/Services/LookupServer/LookupServer.cpp
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@ -96,9 +96,10 @@ void LookupServer::load_etc_hosts()
(u8)atoi(sections[2].characters()),
(u8)atoi(sections[3].characters()),
};
auto raw_addr = addr.to_in_addr_t();
auto name = fields[1];
m_etc_hosts.set(name, addr.to_string());
m_etc_hosts.set(name, String { (const char*)&raw_addr, sizeof(raw_addr) });
IPv4Address reverse_addr {
(u8)atoi(sections[3].characters()),