11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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***/
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#include "socket-util.h"
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typedef struct DnsStream DnsStream;
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#include "resolved-dns-packet.h"
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#include "resolved-dns-transaction.h"
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#include "resolved-manager.h"
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/* Streams are used by three subsystems:
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*
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* 1. The normal transaction logic when doing a DNS or LLMNR lookup via TCP
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* 2. The LLMNR logic when accepting a TCP-based lookup
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* 3. The DNS stub logic when accepting a TCP-based lookup
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*/
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struct DnsStream {
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Manager *manager;
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int n_ref;
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DnsProtocol protocol;
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int fd;
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union sockaddr_union peer;
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socklen_t peer_salen;
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union sockaddr_union local;
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socklen_t local_salen;
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int ifindex;
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uint32_t ttl;
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bool identified;
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sd_event_source *io_event_source;
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sd_event_source *timeout_event_source;
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be16_t write_size, read_size;
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DnsPacket *write_packet, *read_packet;
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size_t n_written, n_read;
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int (*on_packet)(DnsStream *s);
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int (*complete)(DnsStream *s, int error);
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DnsTransaction *transaction; /* when used by the transaction logic */
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DnsQuery *query; /* when used by the DNS stub logic */
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LIST_FIELDS(DnsStream, streams);
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};
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int dns_stream_new(Manager *m, DnsStream **s, DnsProtocol protocol, int fd);
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DnsStream *dns_stream_unref(DnsStream *s);
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DnsStream *dns_stream_ref(DnsStream *s);
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int dns_stream_write_packet(DnsStream *s, DnsPacket *p);
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static inline bool DNS_STREAM_QUEUED(DnsStream *s) {
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assert(s);
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if (s->fd < 0) /* already stopped? */
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return false;
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return !!s->write_packet;
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}
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