mirror of
https://github.com/matrix-construct/construct
synced 2024-09-15 21:18:53 +02:00
394b8dde17
This was an asston of pain, and it still feels "dirty" as it introduces an async call where there normally wouldn't be one. Better implementation more than welcome.
138 lines
3 KiB
C
138 lines
3 KiB
C
/* authd/authd.c - main code for authd
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* Copyright (c) 2016 William Pitcock <nenolod@dereferenced.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "authd.h"
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#include "dns.h"
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#define MAXPARA 10
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static void handle_stat(int parc, char *parv[]);
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rb_helper *authd_helper = NULL;
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authd_cmd_handler authd_cmd_handlers[255] = {
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['D'] = resolve_dns,
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['S'] = handle_stat,
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};
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authd_stat_handler authd_stat_handlers[255] = {
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['D'] = enumerate_nameservers,
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};
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static void
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handle_stat(int parc, char *parv[])
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{
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authd_stat_handler handler;
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if(parc < 3)
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/* XXX Should log this somehow */
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return;
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if (!(handler = authd_stat_handlers[parv[2][0]]))
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return;
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handler(parv[1], parv[2][0]);
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}
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static void
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parse_request(rb_helper *helper)
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{
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static char *parv[MAXPARA + 1];
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static char readbuf[READBUF_SIZE];
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int parc;
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int len;
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authd_cmd_handler handler;
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while((len = rb_helper_read(helper, readbuf, sizeof(readbuf))) > 0)
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{
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parc = rb_string_to_array(readbuf, parv, MAXPARA);
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if(parc < 1)
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continue;
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handler = authd_cmd_handlers[parv[0][0]];
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if (handler != NULL)
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handler(parc, parv);
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}
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}
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static void
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error_cb(rb_helper *helper)
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{
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exit(1);
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}
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#ifndef WINDOWS
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static void
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dummy_handler(int sig)
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{
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return;
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}
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#endif
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static void
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setup_signals(void)
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{
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#ifndef WINDOWS
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struct sigaction act;
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act.sa_flags = 0;
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act.sa_handler = SIG_IGN;
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sigemptyset(&act.sa_mask);
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sigaddset(&act.sa_mask, SIGPIPE);
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sigaddset(&act.sa_mask, SIGALRM);
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#ifdef SIGTRAP
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sigaddset(&act.sa_mask, SIGTRAP);
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#endif
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#ifdef SIGWINCH
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sigaddset(&act.sa_mask, SIGWINCH);
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sigaction(SIGWINCH, &act, 0);
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#endif
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sigaction(SIGPIPE, &act, 0);
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#ifdef SIGTRAP
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sigaction(SIGTRAP, &act, 0);
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#endif
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act.sa_handler = dummy_handler;
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sigaction(SIGALRM, &act, 0);
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#endif
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}
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int
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main(int argc, char *argv[])
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{
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setup_signals();
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authd_helper = rb_helper_child(parse_request, error_cb, NULL, NULL, NULL, 256, 256, 256); /* XXX fix me */
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if(authd_helper == NULL)
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{
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fprintf(stderr, "authd is not meant to be invoked by end users\n");
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exit(1);
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}
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rb_set_time();
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setup_signals();
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init_resolver();
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rb_init_prng(NULL, RB_PRNG_DEFAULT);
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rb_helper_loop(authd_helper, 0);
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return 0;
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}
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