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115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
#include <llarp/dtls.h>
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struct dtls_link
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{
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struct llarp_alloc * mem;
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struct llarp_logic * logic;
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uint32_t timeout_job_id;
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};
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static struct dtls_link * dtls_link_alloc(struct llarp_alloc * mem, struct llarp_msg_muxer * muxer, char * keyfile, char * certfile)
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{
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struct dtls_link * link = mem->alloc(mem, sizeof(struct dtls_link), 8);
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if(link)
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link->mem = mem;
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return link;
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}
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static const char * dtls_link_name()
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{
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return "dtls";
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}
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// forward declare
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static void dtls_link_cleanup_timer(void * l, uint64_t orig, uint64_t left);
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static void dtls_link_issue_cleanup_timer(struct dtls_link * link, uint64_t timeout)
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{
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struct llarp_timeout_job job = {
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.timeout = timeout,
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.user = link,
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.handler = &dtls_link_cleanup_timer
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};
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link->timeout_job_id = llarp_logic_call_later(link->logic, job);
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}
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static bool dtls_link_start(struct llarp_link * l, struct llarp_logic * logic)
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{
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struct dtls_link * link = l->impl;
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link->timeout_job_id = 0;
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link->logic = logic;
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// start cleanup timer
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dtls_link_issue_cleanup_timer(link, 1000); // every 1 second
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return true;
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}
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static void dtls_link_cleanup_dead_sessions(struct dtls_link * link)
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{
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// TODO: implement
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}
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static void dtls_link_cleanup_timer(void * l, uint64_t orig, uint64_t left)
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{
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struct dtls_link * link = l;
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// clear out previous id of job
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link->timeout_job_id = 0;
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if(!left)
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{
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dtls_link_cleanup_dead_sessions(link);
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//TODO: exponential backoff for cleanup timer ?
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dtls_link_issue_cleanup_timer(link, orig);
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}
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}
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static bool dtls_link_stop(struct llarp_link *l)
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{
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struct dtls_link * link = l->impl;
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if(link->timeout_job_id)
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{
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llarp_logic_cancel_call(link->logic, link->timeout_job_id);
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}
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return true;
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}
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static void dtls_link_iter_sessions(struct llarp_link * l, struct llarp_link_session_iter * iter)
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{
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/*
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struct dtls_link * link = l->impl;
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struct llarp_link_session * session;
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iter->link = l;
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*/
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}
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static void dtls_link_try_establish(struct llarp_link * link, struct llarp_link_establish_job job, struct llarp_link_session_listener l)
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{
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}
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static void dtls_link_free(struct llarp_link *l)
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{
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struct dtls_link * link = l->impl;
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struct llarp_alloc * mem = link->mem;
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mem->free(mem, link);
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}
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void dtls_link_init(struct llarp_link * link, struct llarp_dtls_args args, struct llarp_msg_muxer * muxer)
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{
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link->impl = dtls_link_alloc(args.mem, muxer, args.key_file, args.cert_file);
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link->name = dtls_link_name;
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/*
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link->register_listener = dtls_link_reg_listener;
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link->deregister_listener = dtls_link_dereg_listener;
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*/
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link->start_link = dtls_link_start;
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link->stop_link = dtls_link_stop;
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link->iter_sessions = dtls_link_iter_sessions;
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link->try_establish = dtls_link_try_establish;
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link->free_impl = dtls_link_free;
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}
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