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lighttpd1.4/src/mod_status.c

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#include "first.h"
#include "base.h"
#include "fdevent.h"
#include "h2.h"
#include "http_chunk.h"
#include "http_header.h"
#include "log.h"
#include "plugin.h"
#include <sys/types.h>
#include "sys-time.h"
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
typedef struct {
const buffer *config_url;
const buffer *status_url;
const buffer *statistics_url;
int sort;
} plugin_config;
typedef struct {
PLUGIN_DATA;
plugin_config defaults;
plugin_config conf;
double traffic_out;
double requests;
double mod_5s_traffic_out[5];
double mod_5s_requests[5];
size_t mod_5s_ndx;
double rel_traffic_out;
double rel_requests;
double abs_traffic_out;
double abs_requests;
double bytes_written;
} plugin_data;
INIT_FUNC(mod_status_init) {
return calloc(1, sizeof(plugin_data));
}
static void mod_status_merge_config_cpv(plugin_config * const pconf, const config_plugin_value_t * const cpv) {
switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */
case 0: /* status.status-url */
pconf->status_url = cpv->v.b;
break;
case 1: /* status.config-url */
pconf->config_url = cpv->v.b;
break;
case 2: /* status.statistics-url */
pconf->statistics_url = cpv->v.b;
break;
case 3: /* status.enable-sort */
pconf->sort = (int)cpv->v.u;
break;
default:/* should not happen */
return;
}
}
static void mod_status_merge_config(plugin_config * const pconf, const config_plugin_value_t *cpv) {
do {
mod_status_merge_config_cpv(pconf, cpv);
} while ((++cpv)->k_id != -1);
}
static void mod_status_patch_config(request_st * const r, plugin_data * const p) {
p->conf = p->defaults; /* copy small struct instead of memcpy() */
/*memcpy(&p->conf, &p->defaults, sizeof(plugin_config));*/
for (int i = 1, used = p->nconfig; i < used; ++i) {
if (config_check_cond(r, (uint32_t)p->cvlist[i].k_id))
mod_status_merge_config(&p->conf, p->cvlist + p->cvlist[i].v.u2[0]);
}
}
SETDEFAULTS_FUNC(mod_status_set_defaults) {
static const config_plugin_keys_t cpk[] = {
{ CONST_STR_LEN("status.status-url"),
T_CONFIG_STRING,
T_CONFIG_SCOPE_CONNECTION }
,{ CONST_STR_LEN("status.config-url"),
T_CONFIG_STRING,
T_CONFIG_SCOPE_CONNECTION }
,{ CONST_STR_LEN("status.statistics-url"),
T_CONFIG_STRING,
T_CONFIG_SCOPE_CONNECTION }
,{ CONST_STR_LEN("status.enable-sort"),
T_CONFIG_BOOL,
T_CONFIG_SCOPE_CONNECTION }
,{ NULL, 0,
T_CONFIG_UNSET,
T_CONFIG_SCOPE_UNSET }
};
plugin_data * const p = p_d;
if (!config_plugin_values_init(srv, p, cpk, "mod_status"))
return HANDLER_ERROR;
/* process and validate config directives
* (init i to 0 if global context; to 1 to skip empty global context) */
for (int i = !p->cvlist[0].v.u2[1]; i < p->nconfig; ++i) {
config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0];
for (; -1 != cpv->k_id; ++cpv) {
switch (cpv->k_id) {
case 0: /* status.status-url */
case 1: /* status.config-url */
case 2: /* status.statistics-url */
if (buffer_is_blank(cpv->v.b))
cpv->v.b = NULL;
break;
case 3: /* status.enable-sort */
break;
default:/* should not happen */
break;
}
}
}
p->defaults.sort = 1;
/* initialize p->defaults from global config context */
if (p->nconfig > 0 && p->cvlist->v.u2[1]) {
const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0];
if (-1 != cpv->k_id)
mod_status_merge_config(&p->defaults, cpv);
}
return HANDLER_GO_ON;
}
static void
mod_status_append_state (buffer * const b, request_state_t state)
{
const char *s;
size_t n;
switch (state) {
case CON_STATE_CONNECT:
s = "connect"; n = sizeof("connect")-1; break;
case CON_STATE_READ:
s = "read"; n = sizeof("read")-1; break;
case CON_STATE_READ_POST:
s = "readpost"; n = sizeof("readpost")-1; break;
case CON_STATE_WRITE:
s = "write"; n = sizeof("write")-1; break;
case CON_STATE_CLOSE:
s = "close"; n = sizeof("close")-1; break;
case CON_STATE_ERROR:
s = "error"; n = sizeof("error")-1; break;
case CON_STATE_HANDLE_REQUEST:
s = "handle-req"; n = sizeof("handle-req")-1; break;
case CON_STATE_REQUEST_START:
s = "req-start"; n = sizeof("req-start")-1; break;
case CON_STATE_REQUEST_END:
s = "req-end"; n = sizeof("req-end")-1; break;
case CON_STATE_RESPONSE_START:
s = "resp-start"; n = sizeof("resp-start")-1; break;
case CON_STATE_RESPONSE_END:
s = "resp-end"; n = sizeof("resp-end")-1; break;
default:
s = "(unknown)"; n = sizeof("(unknown)")-1; break;
}
buffer_append_string_len(b, s, n);
}
static const char *
mod_status_get_short_state (request_state_t state)
{
switch (state) {
case CON_STATE_CONNECT: return ".";
case CON_STATE_READ: return "r";
case CON_STATE_READ_POST: return "R";
case CON_STATE_WRITE: return "W";
case CON_STATE_CLOSE: return "C";
case CON_STATE_ERROR: return "E";
case CON_STATE_HANDLE_REQUEST: return "h";
case CON_STATE_REQUEST_START: return "q";
case CON_STATE_REQUEST_END: return "Q";
case CON_STATE_RESPONSE_START: return "s";
case CON_STATE_RESPONSE_END: return "S";
default: return "x";
}
}
static void mod_status_header_append_sort(buffer *b, plugin_data *p, const char* k, size_t klen)
{
p->conf.sort
? buffer_append_str3(b,
CONST_STR_LEN("<th class=\"status\"><a href=\"#\" class=\"sortheader\" onclick=\"resort(this);return false;\">"),
k, klen,
CONST_STR_LEN("<span class=\"sortarrow\">:</span></a></th>\n"))
: buffer_append_str3(b,
CONST_STR_LEN("<th class=\"status\">"),
k, klen,
CONST_STR_LEN("</th>\n"));
}
static void mod_status_get_multiplier(buffer *b, double avg, int size) {
char unit[] = " ";
if (avg > size) { avg /= size; unit[1] = 'k'; }
if (avg > size) { avg /= size; unit[1] = 'M'; }
if (avg > size) { avg /= size; unit[1] = 'G'; }
if (avg > size) { avg /= size; unit[1] = 'T'; }
if (avg > size) { avg /= size; unit[1] = 'P'; }
if (avg > size) { avg /= size; unit[1] = 'E'; }
if (avg > size) { avg /= size; unit[1] = 'Z'; }
if (avg > size) { avg /= size; unit[1] = 'Y'; }
if (size == 1000) {
buffer_append_int(b, (intmax_t)avg);
}
else { /* (size == 1024) */
char buf[32+1];
buffer_append_string_len(b, buf, (size_t)
snprintf(buf, sizeof(buf), "%.2f", avg));
}
buffer_append_string_len(b, unit, 2);
}
static void mod_status_html_rtable_r (buffer * const b, const request_st * const r, const connection * const con, const time_t cur_ts) {
buffer_append_str3(b, CONST_STR_LEN("<tr><td class=\"string\">"),
BUF_PTR_LEN(con->dst_addr_buf),
CONST_STR_LEN("</td><td class=\"int\">"));
if (r->reqbody_length) {
buffer_append_int(b, r->reqbody_queue.bytes_in);
buffer_append_string_len(b, CONST_STR_LEN("/"));
buffer_append_int(b, r->reqbody_length);
}
else
buffer_append_string_len(b, CONST_STR_LEN("0/0"));
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"int\">"));
buffer_append_int(b, r->write_queue.bytes_out);
buffer_append_string_len(b, CONST_STR_LEN("/"));
buffer_append_int(b, r->write_queue.bytes_out + chunkqueue_length(&r->write_queue));
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"string\">"));
if (CON_STATE_READ == r->state && !buffer_is_blank(&r->target_orig)) {
buffer_append_string_len(b, CONST_STR_LEN("keep-alive"));
}
else
mod_status_append_state(b, r->state);
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"int\">"));
buffer_append_int(b, cur_ts - r->start_hp.tv_sec);
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"string\">"));
if (buffer_is_blank(r->server_name))
buffer_append_string_encoded(b, BUF_PTR_LEN(&r->uri.authority), ENCODING_HTML);
else
buffer_append_string_encoded(b, BUF_PTR_LEN(r->server_name), ENCODING_HTML);
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"string\">"));
if (!buffer_is_blank(&r->uri.path))
buffer_append_string_encoded(b, BUF_PTR_LEN(&r->uri.path), ENCODING_HTML);
if (!buffer_is_blank(&r->uri.query)) {
buffer_append_string_len(b, CONST_STR_LEN("?"));
buffer_append_string_encoded(b, BUF_PTR_LEN(&r->uri.query), ENCODING_HTML);
}
if (!buffer_is_blank(&r->target_orig)) {
buffer_append_string_len(b, CONST_STR_LEN(" ("));
buffer_append_string_encoded(b, BUF_PTR_LEN(&r->target_orig), ENCODING_HTML);
buffer_append_string_len(b, CONST_STR_LEN(")"));
}
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"string\">"));
buffer_append_string_encoded(b, BUF_PTR_LEN(&r->physical.path), ENCODING_HTML);
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"));
}
static void mod_status_html_rtable (request_st * const rq, const server * const srv, const time_t cur_ts) {
/* connection table and URLs might be large, so double-buffer to aggregate
* before sending to chunkqueue, which might be temporary file
* (avoid write() per connection) */
buffer * const b = rq->tmp_buf;
buffer_clear(b);
connection * const * const cptr = srv->conns.ptr;
for (uint32_t i = 0, used = srv->conns.used; i < used; ++i) {
const connection * const con = cptr[i];
const request_st * const r = &con->request;
if (r->http_status <= HTTP_VERSION_1_1) {
if (buffer_string_space(b) < 4096) {
http_chunk_append_mem(rq, BUF_PTR_LEN(b));
buffer_clear(b);
}
mod_status_html_rtable_r(b, r, con, cur_ts);
}
else {
h2con * const h2c = con->h2;
for (uint32_t j = 0, rused = h2c->rused; j < rused; ++j) {
if (buffer_string_space(b) < 4096) {
http_chunk_append_mem(rq, BUF_PTR_LEN(b));
buffer_clear(b);
}
mod_status_html_rtable_r(b, h2c->r[j], con, cur_ts);
}
}
}
http_chunk_append_mem(rq, BUF_PTR_LEN(b));
}
static handler_t mod_status_handle_server_status_html(server *srv, request_st * const r, plugin_data *p) {
buffer * const b = chunkqueue_append_buffer_open(&r->write_queue);
buffer_string_prepare_append(b, 8192-1);/*(status page base HTML is ~5.2k)*/
double avg;
uint32_t j;
time_t ts;
const time_t cur_ts = log_epoch_secs;
int days, hours, mins, seconds;
/*(CON_STATE_CLOSE must be last state in enum connection_state_t)*/
int cstates[CON_STATE_CLOSE+3];
memset(cstates, 0, sizeof(cstates));
buffer_copy_string_len(b, CONST_STR_LEN(
"<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"
"<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n"
" <head>\n"
" <title>Status</title>\n"
" <style type=\"text/css\">\n"
" table.status { border: black solid thin; }\n"
" td { white-space: nowrap; }\n"
" td.int { background-color: #f0f0f0; text-align: right }\n"
" td.string { background-color: #f0f0f0; text-align: left }\n"
" th.status { background-color: black; color: white; font-weight: bold; }\n"
" a.sortheader { background-color: black; color: white; font-weight: bold; text-decoration: none; display: block; }\n"
" span.sortarrow { color: white; text-decoration: none; }\n"
" </style>\n"));
if (!buffer_is_blank(&r->uri.query) && 0 == memcmp(r->uri.query.ptr, CONST_STR_LEN("refresh="))) {
/* Note: Refresh is an historical, but non-standard HTTP header
* References (meta http-equiv="refresh" use is deprecated):
* https://www.w3.org/TR/WCAG10-HTML-TECHS/#meta-element
* https://www.w3.org/TR/WCAG10-CORE-TECHS/#auto-page-refresh
* https://www.w3.org/QA/Tips/reback
*/
const long refresh = strtol(r->uri.query.ptr+sizeof("refresh=")-1, NULL, 10);
if (refresh > 0) {
buffer_append_string_len(b, CONST_STR_LEN("<meta http-equiv=\"refresh\" content=\""));
buffer_append_int(b, refresh < 604800 ? refresh : 604800);
buffer_append_string_len(b, CONST_STR_LEN("\">\n"));
}
}
if (p->conf.sort) {
buffer_append_string_len(b, CONST_STR_LEN(
"<script type=\"text/javascript\">\n"
"// <!--\n"
"var sort_column;\n"
"var prev_span = null;\n"
"function get_inner_text(el) {\n"
" if((typeof el == 'string')||(typeof el == 'undefined'))\n"
" return el;\n"
" if(el.innerText)\n"
" return el.innerText;\n"
" else {\n"
" var str = \"\";\n"
" var cs = el.childNodes;\n"
" var l = cs.length;\n"
" for (i=0;i<l;i++) {\n"
" if (cs[i].nodeType==1) str += get_inner_text(cs[i]);\n"
" else if (cs[i].nodeType==3) str += cs[i].nodeValue;\n"
" }\n"
" }\n"
" return str;\n"
"}\n"
"function sortfn(a,b) {\n"
" var at = get_inner_text(a.cells[sort_column]);\n"
" var bt = get_inner_text(b.cells[sort_column]);\n"
" if (a.cells[sort_column].className == 'int') {\n"
" return parseInt(at)-parseInt(bt);\n"
" } else {\n"
" aa = at.toLowerCase();\n"
" bb = bt.toLowerCase();\n"
" if (aa==bb) return 0;\n"
" else if (aa<bb) return -1;\n"
" else return 1;\n"
" }\n"
"}\n"
"function resort(lnk) {\n"
" var span = lnk.childNodes[1];\n"
" var table = lnk.parentNode.parentNode.parentNode.parentNode;\n"
" var rows = new Array();\n"
" for (j=1;j<table.rows.length;j++)\n"
" rows[j-1] = table.rows[j];\n"
" sort_column = lnk.parentNode.cellIndex;\n"
" rows.sort(sortfn);\n"
" if (prev_span != null) prev_span.innerHTML = '';\n"
" if (span.getAttribute('sortdir')=='down') {\n"
" span.innerHTML = '&uarr;';\n"
" span.setAttribute('sortdir','up');\n"
" rows.reverse();\n"
" } else {\n"
" span.innerHTML = '&darr;';\n"
" span.setAttribute('sortdir','down');\n"
" }\n"
" for (i=0;i<rows.length;i++)\n"
" table.tBodies[0].appendChild(rows[i]);\n"
" prev_span = span;\n"
"}\n"
"// -->\n"
"</script>\n"));
}
buffer_append_string_len(b, CONST_STR_LEN(
" </head>\n"
"<body>\n"));
/* connection listing */
buffer_append_string_len(b,
CONST_STR_LEN("<h1>Server-Status"));
if (r->conf.server_tag)
buffer_append_str3(b, CONST_STR_LEN(
" ("),
BUF_PTR_LEN(r->conf.server_tag),
CONST_STR_LEN(
")"));
buffer_append_string_len(b,
CONST_STR_LEN("</h1>"
"<table summary=\"status\" class=\"status\">"
"<tr><td>Hostname</td><td class=\"string\">"));
buffer_append_string_encoded(b, BUF_PTR_LEN(&r->uri.authority), ENCODING_HTML);
if (!buffer_is_blank(r->server_name) && r->server_name != &r->uri.authority) {
buffer_append_string_len(b, CONST_STR_LEN(" ("));
buffer_append_string_encoded(b, BUF_PTR_LEN(r->server_name), ENCODING_HTML);
buffer_append_string_len(b, CONST_STR_LEN(")"));
}
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"
"<tr><td>Uptime</td><td class=\"string\">"));
ts = cur_ts - srv->startup_ts;
days = ts / (60 * 60 * 24);
ts %= (60 * 60 * 24);
hours = ts / (60 * 60);
ts %= (60 * 60);
mins = ts / (60);
ts %= (60);
seconds = ts;
if (days) {
buffer_append_int(b, days);
buffer_append_string_len(b, CONST_STR_LEN(" days "));
}
if (hours) {
buffer_append_int(b, hours);
buffer_append_string_len(b, CONST_STR_LEN(" hours "));
}
if (mins) {
buffer_append_int(b, mins);
buffer_append_string_len(b, CONST_STR_LEN(" min "));
}
buffer_append_int(b, seconds);
buffer_append_string_len(b, CONST_STR_LEN(" s"
"</td></tr>\n"
"<tr><td>Started at</td><td class=\"string\">"));
ts = srv->startup_ts;
struct tm tm;
buffer_append_strftime(b, "%F %T", localtime_r(&ts, &tm));
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"
"<tr><th colspan=\"2\">absolute (since start)</th></tr>\n"
"<tr><td>Requests</td><td class=\"string\">"));
avg = p->abs_requests;
mod_status_get_multiplier(b, avg, 1000);
buffer_append_string_len(b, CONST_STR_LEN("req</td></tr>\n"
"<tr><td>Traffic</td><td class=\"string\">"));
avg = p->abs_traffic_out;
mod_status_get_multiplier(b, avg, 1024);
buffer_append_string_len(b, CONST_STR_LEN("byte</td></tr>\n"
"<tr><th colspan=\"2\">average (since start)</th></tr>\n"
"<tr><td>Requests</td><td class=\"string\">"));
avg = p->abs_requests / (cur_ts - srv->startup_ts);
mod_status_get_multiplier(b, avg, 1000);
buffer_append_string_len(b, CONST_STR_LEN("req/s</td></tr>\n"
"<tr><td>Traffic</td><td class=\"string\">"));
avg = p->abs_traffic_out / (cur_ts - srv->startup_ts);
mod_status_get_multiplier(b, avg, 1024);
buffer_append_string_len(b, CONST_STR_LEN("byte/s</td></tr>\n"
"<tr><th colspan=\"2\">average (5s sliding average)</th></tr>\n"));
for (j = 0, avg = 0; j < 5; j++) {
avg += p->mod_5s_requests[j];
}
avg /= 5;
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Requests</td><td class=\"string\">"));
mod_status_get_multiplier(b, avg, 1000);
buffer_append_string_len(b, CONST_STR_LEN("req/s</td></tr>\n"));
for (j = 0, avg = 0; j < 5; j++) {
avg += p->mod_5s_traffic_out[j];
}
avg /= 5;
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Traffic</td><td class=\"string\">"));
mod_status_get_multiplier(b, avg, 1024);
buffer_append_string_len(b, CONST_STR_LEN("byte/s</td></tr>\n"
"</table>\n"
"<hr />\n<pre>\n"
"<b>"));
buffer_append_int(b, srv->conns.used);
buffer_append_string_len(b, CONST_STR_LEN(" connections</b>\n"));
int per_line = 50;
for (j = 0; j < srv->conns.used; ++j) {
connection *c = srv->conns.ptr[j];
const request_st * const cr = &c->request;
const char *state;
if ((c->h2 && 0 == c->h2->rused)
|| (CON_STATE_READ == cr->state && !buffer_is_blank(&cr->target_orig))) {
state = "k";
++cstates[CON_STATE_CLOSE+2];
} else {
state = mod_status_get_short_state(cr->state);
++cstates[(cr->state <= CON_STATE_CLOSE ? cr->state : CON_STATE_CLOSE+1)];
}
buffer_append_string_len(b, state, 1);
if (0 == --per_line) {
per_line = 50;
buffer_append_string_len(b, CONST_STR_LEN("\n"));
}
}
buffer_append_string_len(b, CONST_STR_LEN("\n\n<table>\n"
"<tr><td style=\"text-align:right\">"));
buffer_append_int(b, cstates[CON_STATE_CLOSE+2]);
buffer_append_string_len(b, CONST_STR_LEN("<td>&nbsp;&nbsp;k = keep-alive</td></tr>\n"));
for (j = 0; j < CON_STATE_CLOSE+2; ++j) {
/*(skip "unknown" state if there are none; there should not be any unknown)*/
if (0 == cstates[j] && j == CON_STATE_CLOSE+1) continue;
buffer_append_string_len(b, CONST_STR_LEN("<tr><td style=\"text-align:right\">"));
buffer_append_int(b, cstates[j]);
buffer_append_str3(b, CONST_STR_LEN("</td><td>&nbsp;&nbsp;"),
mod_status_get_short_state(j), 1,
CONST_STR_LEN(" = "));
mod_status_append_state(b, j);
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"));
}
buffer_append_string_len(b, CONST_STR_LEN(
"</table>\n"
"</pre><hr />\n<h2>Connections</h2>\n"
"<table summary=\"status\" class=\"status\">\n"
"<tr>"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("Client IP"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("Read"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("Written"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("State"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("Time"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("Host"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("URI"));
mod_status_header_append_sort(b, p, CONST_STR_LEN("File"));
buffer_append_string_len(b, CONST_STR_LEN("</tr>\n"));
chunkqueue_append_buffer_commit(&r->write_queue);
/* connection table might be large, so buffer separately */
mod_status_html_rtable(r, srv, cur_ts);
http_chunk_append_mem(r, CONST_STR_LEN(
"</table>\n"
"</body>\n"
"</html>\n"
));
http_header_response_set(r, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/html"));
return 0;
}
static handler_t mod_status_handle_server_status_text(server *srv, request_st * const r, plugin_data *p) {
buffer *b = chunkqueue_append_buffer_open(&r->write_queue);
/* output total number of requests */
buffer_append_string_len(b, CONST_STR_LEN("Total Accesses: "));
buffer_append_int(b, (intmax_t)p->abs_requests);
buffer_append_string_len(b, CONST_STR_LEN("\nTotal kBytes: "));
buffer_append_int(b, (intmax_t)(p->abs_traffic_out / 1024));
buffer_append_string_len(b, CONST_STR_LEN("\nUptime: "));
buffer_append_int(b, log_epoch_secs - srv->startup_ts);
buffer_append_string_len(b, CONST_STR_LEN("\nBusyServers: "));
buffer_append_int(b, srv->conns.used);
buffer_append_string_len(b, CONST_STR_LEN("\nIdleServers: "));
buffer_append_int(b, srv->conns.size - srv->conns.used);
buffer_append_string_len(b, CONST_STR_LEN("\nScoreboard: "));
for (uint32_t i = 0; i < srv->conns.used; ++i) {
connection *c = srv->conns.ptr[i];
const request_st * const cr = &c->request;
const char *state =
((c->h2 && 0 == c->h2->rused)
|| (CON_STATE_READ == cr->state && !buffer_is_blank(&cr->target_orig)))
? "k"
: mod_status_get_short_state(cr->state);
buffer_append_string_len(b, state, 1);
}
for (uint32_t i = 0; i < srv->conns.size - srv->conns.used; ++i) {
buffer_append_string_len(b, CONST_STR_LEN("_"));
}
buffer_append_string_len(b, CONST_STR_LEN("\n"));
chunkqueue_append_buffer_commit(&r->write_queue);
/* set text/plain output */
http_header_response_set(r, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/plain"));
return 0;
}
static handler_t mod_status_handle_server_status_json(server *srv, request_st * const r, plugin_data *p) {
buffer *b = chunkqueue_append_buffer_open(&r->write_queue);
double avg;
uint32_t j;
unsigned int jsonp = 0;
if (buffer_clen(&r->uri.query) >= sizeof("jsonp=")-1
&& 0 == memcmp(r->uri.query.ptr, CONST_STR_LEN("jsonp="))) {
/* not a full parse of query string for multiple parameters,
* not URL-decoding param and not XML-encoding (XSS protection),
* so simply ensure that json function name isalnum() or '_' */
const char *f = r->uri.query.ptr + sizeof("jsonp=")-1;
int len = 0;
while (light_isalnum(f[len]) || f[len] == '_') ++len;
if (0 != len && light_isalpha(f[0]) && f[len] == '\0') {
buffer_append_str2(b, f, len, CONST_STR_LEN("("));
jsonp = 1;
}
}
buffer_append_string_len(b, CONST_STR_LEN("{\n\t\"RequestsTotal\": "));
buffer_append_int(b, (intmax_t)p->abs_requests);
buffer_append_string_len(b, CONST_STR_LEN(",\n\t\"TrafficTotal\": "));
buffer_append_int(b, (intmax_t)(p->abs_traffic_out / 1024));
buffer_append_string_len(b, CONST_STR_LEN(",\n\t\"Uptime\": "));
buffer_append_int(b, log_epoch_secs - srv->startup_ts);
buffer_append_string_len(b, CONST_STR_LEN(",\n\t\"BusyServers\": "));
buffer_append_int(b, srv->conns.used);
buffer_append_string_len(b, CONST_STR_LEN(",\n\t\"IdleServers\": "));
buffer_append_int(b, srv->conns.size - srv->conns.used);
buffer_append_string_len(b, CONST_STR_LEN(",\n"));
for (j = 0, avg = 0; j < 5; j++) {
avg += p->mod_5s_requests[j];
}
avg /= 5;
buffer_append_string_len(b, CONST_STR_LEN("\t\"RequestAverage5s\":"));
buffer_append_int(b, avg);
buffer_append_string_len(b, CONST_STR_LEN(",\n"));
for (j = 0, avg = 0; j < 5; j++) {
avg += p->mod_5s_traffic_out[j];
}
avg /= 5;
buffer_append_string_len(b, CONST_STR_LEN("\t\"TrafficAverage5s\":"));
buffer_append_int(b, avg / 1024); /* kbps */
buffer_append_string_len(b, CONST_STR_LEN("\n}"));
if (jsonp) buffer_append_string_len(b, CONST_STR_LEN(");"));
chunkqueue_append_buffer_commit(&r->write_queue);
/* set text/plain output */
http_header_response_set(r, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("application/javascript"));
return 0;
}
static handler_t mod_status_handle_server_statistics(request_st * const r) {
buffer *b;
size_t i;
array *st = &plugin_stats;
if (0 == st->used) {
/* we have nothing to send */
r->http_status = 204;
r->resp_body_finished = 1;
return HANDLER_FINISHED;
}
b = chunkqueue_append_buffer_open(&r->write_queue);
for (i = 0; i < st->used; i++) {
buffer_append_str2(b, BUF_PTR_LEN(&st->sorted[i]->key),
CONST_STR_LEN(": "));
buffer_append_int(b, ((data_integer *)st->sorted[i])->value);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
}
chunkqueue_append_buffer_commit(&r->write_queue);
http_header_response_set(r, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/plain"));
r->http_status = 200;
r->resp_body_finished = 1;
return HANDLER_FINISHED;
}
static handler_t mod_status_handle_server_status(request_st * const r, plugin_data * const p) {
server * const srv = r->con->srv;
if (buffer_is_equal_string(&r->uri.query, CONST_STR_LEN("auto"))) {
mod_status_handle_server_status_text(srv, r, p);
} else if (buffer_clen(&r->uri.query) >= sizeof("json")-1
&& 0 == memcmp(r->uri.query.ptr, CONST_STR_LEN("json"))) {
mod_status_handle_server_status_json(srv, r, p);
} else {
mod_status_handle_server_status_html(srv, r, p);
}
r->http_status = 200;
r->resp_body_finished = 1;
return HANDLER_FINISHED;
}
static void mod_status_row_append(buffer *b, const char *k, size_t klen, const char *v, size_t vlen)
{
struct const_iovec iov[] = {
{ CONST_STR_LEN(" <tr>\n"
" <td><b>") }
,{ k, klen }
,{ CONST_STR_LEN("</b></td>\n"
" <td>") }
,{ v, vlen }
,{ CONST_STR_LEN("</td>\n"
" </tr>\n") }
};
buffer_append_iovec(b, iov, sizeof(iov)/sizeof(*iov));
}
static void mod_status_header_append(buffer *b, const char *k, size_t klen)
{
buffer_append_str3(b,
CONST_STR_LEN(" <tr>\n"
" <th colspan=\"2\">"),
k, klen,
CONST_STR_LEN("</th>\n"
" </tr>\n"));
}
static handler_t mod_status_handle_server_config(request_st * const r) {
server * const srv = r->con->srv;
buffer * const tb = r->tmp_buf;
buffer_clear(tb);
for (uint32_t i = 0; i < srv->plugins.used; ++i) {
const char *name = ((plugin **)srv->plugins.ptr)[i]->name;
if (i != 0) {
buffer_append_string_len(tb, CONST_STR_LEN("<br />"));
}
buffer_append_string_len(tb, name, strlen(name));
}
buffer *b = chunkqueue_append_buffer_open(&r->write_queue);
/*(could expand the following into a single buffer_append_iovec(),
* but this routine is not expected to be under high load)*/
buffer_append_string_len(b, CONST_STR_LEN(
"<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"
"<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n"
" <head>\n"
" <title>Status</title>\n"
" </head>\n"
" <body>\n"));
if (r->conf.server_tag)
buffer_append_str3(b, CONST_STR_LEN(
" <h1>"),
BUF_PTR_LEN(r->conf.server_tag),
CONST_STR_LEN(
" </h1>\n"));
buffer_append_string_len(b, CONST_STR_LEN(
" <table summary=\"status\" border=\"1\">\n"));
mod_status_header_append(b, CONST_STR_LEN("Server-Features"));
#ifdef HAVE_PCRE_H
mod_status_row_append(b, CONST_STR_LEN("RegEx Conditionals"), CONST_STR_LEN("enabled"));
#else
mod_status_row_append(b, CONST_STR_LEN("RegEx Conditionals"), CONST_STR_LEN("disabled - pcre missing"));
#endif
mod_status_header_append(b, CONST_STR_LEN("Network Engine"));
mod_status_row_append(b, CONST_STR_LEN("fd-Event-Handler"),
srv->srvconf.event_handler,
strlen(srv->srvconf.event_handler));
mod_status_header_append(b, CONST_STR_LEN("Config-File-Settings"));
mod_status_row_append(b, CONST_STR_LEN("Loaded Modules"), BUF_PTR_LEN(tb));
buffer_append_string_len(b, CONST_STR_LEN(
" </table>\n"
" </body>\n"
"</html>\n"
));
chunkqueue_append_buffer_commit(&r->write_queue);
http_header_response_set(r, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/html"));
r->http_status = 200;
r->resp_body_finished = 1;
return HANDLER_FINISHED;
}
static handler_t mod_status_handler(request_st * const r, void *p_d) {
plugin_data *p = p_d;
if (NULL != r->handler_module) return HANDLER_GO_ON;
mod_status_patch_config(r, p);
if (p->conf.status_url &&
buffer_is_equal(p->conf.status_url, &r->uri.path)) {
return mod_status_handle_server_status(r, p);
} else if (p->conf.config_url &&
buffer_is_equal(p->conf.config_url, &r->uri.path)) {
return mod_status_handle_server_config(r);
} else if (p->conf.statistics_url &&
buffer_is_equal(p->conf.statistics_url, &r->uri.path)) {
return mod_status_handle_server_statistics(r);
}
return HANDLER_GO_ON;
}
TRIGGER_FUNC(mod_status_trigger) {
plugin_data *p = p_d;
/* check all connections */
for (uint32_t i = 0; i < srv->conns.used; ++i) {
connection *c = srv->conns.ptr[i];
p->bytes_written += c->bytes_written_cur_second;
}
/* a sliding average */
p->mod_5s_traffic_out[p->mod_5s_ndx] = p->bytes_written;
p->mod_5s_requests [p->mod_5s_ndx] = p->requests;
p->mod_5s_ndx = (p->mod_5s_ndx+1) % 5;
p->abs_traffic_out += p->bytes_written;
p->rel_traffic_out += p->bytes_written;
p->bytes_written = 0;
/* reset storage - second */
p->traffic_out = 0;
p->requests = 0;
return HANDLER_GO_ON;
}
REQUESTDONE_FUNC(mod_status_account) {
plugin_data *p = p_d;
p->requests++;
p->rel_requests++;
p->abs_requests++;
p->bytes_written += r->con->bytes_written_cur_second;
return HANDLER_GO_ON;
}
int mod_status_plugin_init(plugin *p);
int mod_status_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = "status";
p->init = mod_status_init;
p->set_defaults= mod_status_set_defaults;
p->handle_uri_clean = mod_status_handler;
p->handle_trigger = mod_status_trigger;
p->handle_request_done = mod_status_account;
return 0;
}