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d0fa39af7f
Generic lws_system IPv4 DHCP client - netif and route control via lib/plat apis - linux plat pieces implemented - Uses raw ip socket for UDP broadcast and rx - security-aware - usual stuff plus up to 4 x dns server If it's enabled for build, it holds the system state at DHCP until at least one registered interface has acquired a set of IP / mask / router / DNS server It uses PF_PACKET which is Linux-only atm. But those areas are isolated into plat code. TODOs - lease timing and reacquire - plat pieces for other than Linux
79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
/*
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* lws-api-test-dhcpc
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*
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* Written in 2019 by Andy Green <andy@warmcat.com>
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*
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* This file is made available under the Creative Commons CC0 1.0
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* Universal Public Domain Dedication.
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*/
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#include <libwebsockets.h>
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#include <signal.h>
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static int interrupted, ok, fail, exp = 1;
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struct lws_context *context;
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const char *nif;
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static int
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lws_dhcpc_cb(void *opaque, int af, uint8_t *ip, int ip_len)
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{
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lwsl_user("%s: dhcp set OK\n", __func__);
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ok = 1;
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interrupted = 1;
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return 0;
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}
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void sigint_handler(int sig)
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{
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interrupted = 1;
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}
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int
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main(int argc, const char **argv)
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{
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struct lws_context_creation_info info;
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const char *p;
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int n = 1;
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signal(SIGINT, sigint_handler);
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memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
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lws_cmdline_option_handle_builtin(argc, argv, &info);
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lwsl_user("LWS API selftest: DHCP Client\n");
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info.port = CONTEXT_PORT_NO_LISTEN;
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info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
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if ((p = lws_cmdline_option(argc, argv, "-i")))
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nif = p;
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context = lws_create_context(&info);
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if (!context) {
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lwsl_err("lws init failed\n");
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return 1;
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}
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if (nif) {
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lwsl_user("%s: requesting DHCP for %s\n", __func__, nif);
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lws_dhcpc_request(context, nif, AF_INET, lws_dhcpc_cb, NULL);
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} else {
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lwsl_err("%s: use -i <network-interface> to select if\n", __func__);
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interrupted = 1;
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}
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/* the usual lws event loop */
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n = 1;
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while (n >= 0 && !interrupted)
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n = lws_service(context, 0);
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lws_context_destroy(context);
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if (fail || ok != exp)
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lwsl_user("Completed: PASS: %d / %d, FAIL: %d\n", ok, exp,
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fail);
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else
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lwsl_user("Completed: ALL PASS: %d / %d\n", ok, exp);
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return !(ok == exp && !fail);
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}
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