mongoose/examples/zephyr/http-server/src/main.c
2022-10-06 17:30:27 -03:00

107 lines
4.0 KiB
C

// Copyright (c) 2020 Cesanta Software Limited
// All rights reserved
#include "certs.h"
#include "mongoose.h"
static const char *s_web_dir = "/";
static const char *s_http_addr = "http://0.0.0.0:8000";
static const char *s_https_addr = "https://0.0.0.0:8443";
static time_t s_boot_timestamp = 0;
static struct mg_connection *s_sntp_conn = NULL;
// Event handler for the listening HTTP/HTTPS connection.
static void wcb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
if (ev == MG_EV_ACCEPT && fn_data != NULL) {
struct mg_tls_opts opts = {.cert = s_ssl_cert, .certkey = s_ssl_key};
mg_tls_init(c, &opts);
} else if (ev == MG_EV_HTTP_MSG) {
struct mg_http_message *hm = ev_data;
MG_INFO(("%.*s %.*s %ld", (int) hm->method.len, hm->method.ptr,
(int) hm->uri.len, hm->uri.ptr, (long) hm->body.len));
if (mg_http_match_uri(hm, "/api/#")) { // REST API requests
// Print some statistics about currently established connections
mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
mg_http_printf_chunk(c, "ID PROTO TYPE LOCAL REMOTE\n");
for (struct mg_connection *t = c->mgr->conns; t != NULL; t = t->next) {
char loc[40], rem[40];
mg_http_printf_chunk(c, "%-3lu %4s %s %-15s %s\n", t->id,
t->is_udp ? "UDP" : "TCP",
t->is_listening ? "LISTENING"
: t->is_accepted ? "ACCEPTED "
: "CONNECTED",
mg_straddr(&t->loc, loc, sizeof(loc)),
mg_straddr(&t->rem, rem, sizeof(rem)));
}
mg_http_printf_chunk(c, ""); // Don't forget the last empty chunk
} else {
struct mg_http_serve_opts opts = {.root_dir = s_web_dir}; // Serve
mg_http_serve_dir(c, hm, &opts); // static files
}
} else if (ev == MG_EV_OPEN) {
// c->is_hexdumping = 1;
}
}
// example system time()-like function
time_t ourtime(time_t *tp) {
time_t t = s_boot_timestamp + mg_millis() / 1000;
if (tp != NULL) *tp = t;
return t;
}
// SNTP callback. Modifies s_boot_timestamp, to make ourtime() correct
static void sfn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
if (ev == MG_EV_SNTP_TIME) {
int64_t t = *(int64_t *) ev_data;
MG_INFO(("Got SNTP time: %lld ms from epoch", t));
s_boot_timestamp = (time_t) ((t - mg_millis()) / 1000);
} else if (ev == MG_EV_CLOSE) {
s_sntp_conn = NULL;
}
}
// Periodic timer syncs time via SNTP
static void timer_fn(void *arg) {
struct mg_mgr *mgr = (struct mg_mgr *) arg;
if (s_sntp_conn == NULL) s_sntp_conn = mg_sntp_connect(mgr, NULL, sfn, NULL);
if (s_boot_timestamp < 9999) mg_sntp_request(s_sntp_conn);
}
// Zephyr: Define a semaphore and network management callback to be able to wait
// until our IP address is ready. The main function will start and block on this
// semaphore until this event handler releases it when the network is ready
K_SEM_DEFINE(run, 0, 1);
static void zeh(struct net_mgmt_event_callback *cb, uint32_t mgmt_event,
struct net_if *iface) {
if (mgmt_event == NET_EVENT_L4_CONNECTED) k_sem_give(&run);
}
int main(int argc, char *argv[]) {
// Zephyr: Register the network management callback and block on the semaphore
struct net_mgmt_event_callback ncb;
net_mgmt_init_event_callback(&ncb, zeh, NET_EVENT_L4_CONNECTED);
net_mgmt_add_event_callback(&ncb);
k_sem_take(&run, K_FOREVER);
struct mg_mgr mgr;
mg_log_set(MG_LL_DEBUG);
mg_mgr_init(&mgr);
mg_http_listen(&mgr, s_http_addr, wcb, NULL);
mg_http_listen(&mgr, s_https_addr, wcb, &mgr);
mg_timer_add(&mgr, 5000, MG_TIMER_REPEAT | MG_TIMER_RUN_NOW, timer_fn, &mgr);
// Start infinite event loop
MG_INFO(("Mongoose version : v%s", MG_VERSION));
MG_INFO(("Listening on : %s", s_http_addr));
MG_INFO(("Listening on : %s", s_https_addr));
MG_INFO(("Web root : [%s]", s_web_dir));
for (;;) mg_mgr_poll(&mgr, 1000);
mg_mgr_free(&mgr);
return 0;
}