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/*
* libwebsockets-test-server - libwebsockets test implementation
*
* Copyright (C) 2010-2016 Andy Green <andy@warmcat.com>
*
* This file is made available under the Creative Commons CC0 1.0
* Universal Public Domain Dedication.
*
* The person who associated a work with this deed has dedicated
* the work to the public domain by waiving all of his or her rights
* to the work worldwide under copyright law, including all related
* and neighboring rights, to the extent allowed by law. You can copy,
* modify, distribute and perform the work, even for commercial purposes,
* all without asking permission.
*
* The test apps are intended to be adapted for use in your code, which
* may be proprietary. So unlike the library itself, they are licensed
* Public Domain.
*/
#include "test-server.h"
#include <time.h>
static unsigned char server_info[1024];
static int server_info_len;
static int current;
static char cache[16384];
static int cache_len;
static struct per_session_data__lws_status *list;
static int live_wsi;
static void
update_status(struct lws *wsi, struct per_session_data__lws_status *pss)
{
struct per_session_data__lws_status **pp = &list;
int subsequent = 0;
char *p = cache + LWS_PRE, *start = p;
char date[128];
time_t t;
struct tm *ptm;
#ifndef WIN32
struct tm tm;
#endif
p += lws_snprintf(p, 512, " { %s, \"wsi\":\"%d\", \"conns\":[",
server_info, live_wsi);
/* render the list */
while (*pp) {
t = (*pp)->tv_established.tv_sec;
#ifdef WIN32
ptm = localtime(&t);
if (!ptm)
#else
ptm = &tm;
if (!localtime_r(&t, &tm))
#endif
strcpy(date, "unknown");
else
#ifdef WIN32
strftime(date, sizeof(date), "%Y %H:%M %Z", ptm);
#else
strftime(date, sizeof(date), "%F %H:%M %Z", ptm);
#endif
if ((p - start) > (sizeof(cache) - 512))
break;
if (subsequent)
*p++ = ',';
subsequent = 1;
p += lws_snprintf(p, sizeof(cache) - (p - start) - 1,
"{\"peer\":\"%s\",\"time\":\"%s\","
"\"ua\":\"%s\"}",
(*pp)->ip, date, (*pp)->user_agent);
pp = &((*pp)->list);
}
p += sprintf(p, "]}");
cache_len = p - start;
lwsl_err("cache_len %d\n", cache_len);
*p = '\0';
/* since we changed the list, increment the 'version' */
current++;
/* update everyone */
lws_callback_on_writable_all_protocol(lws_get_context(wsi),
lws_get_protocol(wsi));
}
/* lws-status protocol */
int
callback_lws_status(struct lws *wsi, enum lws_callback_reasons reason,
void *user, void *in, size_t len)
{
struct per_session_data__lws_status *pss =
(struct per_session_data__lws_status *)user,
**pp;
char name[128], rip[128];
int m;
switch (reason) {
case LWS_CALLBACK_PROTOCOL_INIT:
/*
* Prepare the static server info
*/
server_info_len = sprintf((char *)server_info,
"\"version\":\"%s\","
" \"hostname\":\"%s\"",
lws_get_library_version(),
lws_canonical_hostname(
lws_get_context(wsi)));
break;
case LWS_CALLBACK_ESTABLISHED:
/*
* we keep a linked list of live pss, so we can walk it
*/
pss->last = 0;
pss->list = list;
list = pss;
live_wsi++;
lws_get_peer_addresses(wsi, lws_get_socket_fd(wsi), name,
sizeof(name), rip, sizeof(rip));
sprintf(pss->ip, "%s (%s)", name, rip);
gettimeofday(&pss->tv_established, NULL);
strcpy(pss->user_agent, "unknown");
lws_hdr_copy(wsi, pss->user_agent, sizeof(pss->user_agent),
WSI_TOKEN_HTTP_USER_AGENT);
update_status(wsi, pss);
break;
case LWS_CALLBACK_SERVER_WRITEABLE:
m = lws_write(wsi, (unsigned char *)cache + LWS_PRE, cache_len,
LWS_WRITE_TEXT);
if (m < server_info_len) {
lwsl_err("ERROR %d writing to di socket\n", m);
return -1;
}
break;
case LWS_CALLBACK_CLOSED:
/*
* remove ourselves from live pss list
*/
lwsl_err("CLOSING pss %p ********\n", pss);
pp = &list;
while (*pp) {
if (*pp == pss) {
*pp = pss->list;
pss->list = NULL;
live_wsi--;
break;
}
pp = &((*pp)->list);
}
update_status(wsi, pss);
break;
default:
break;
}
return 0;
}
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