#include "first.h"
#include "base.h"
#include "connections.h"
#include "fdevent.h"
#include "http_header.h"
#include "log.h"
#include "plugin.h"
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <stdio.h>
typedef struct {
buffer *config_url;
buffer *status_url;
buffer *statistics_url;
int sort;
} plugin_config;
typedef struct {
PLUGIN_DATA;
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;
buffer *module_list;
plugin_config **config_storage;
plugin_config conf;
} plugin_data;
INIT_FUNC(mod_status_init) {
plugin_data *p;
size_t i;
p = calloc(1, sizeof(*p));
p->traffic_out = p->requests = 0;
p->rel_traffic_out = p->rel_requests = 0;
p->abs_traffic_out = p->abs_requests = 0;
p->bytes_written = 0;
p->module_list = buffer_init();
for (i = 0; i < 5; i++) {
p->mod_5s_traffic_out[i] = p->mod_5s_requests[i] = 0;
}
return p;
}
FREE_FUNC(mod_status_free) {
plugin_data *p = p_d;
UNUSED(srv);
if (!p) return HANDLER_GO_ON;
buffer_free(p->module_list);
if (p->config_storage) {
size_t i;
for (i = 0; i < srv->config_context->used; i++) {
plugin_config *s = p->config_storage[i];
if (NULL == s) continue;
buffer_free(s->status_url);
buffer_free(s->statistics_url);
buffer_free(s->config_url);
free(s);
}
free(p->config_storage);
}
free(p);
return HANDLER_GO_ON;
}
SETDEFAULTS_FUNC(mod_status_set_defaults) {
plugin_data *p = p_d;
size_t i;
config_values_t cv[] = {
{ "status.status-url", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION },
{ "status.config-url", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION },
{ "status.enable-sort", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION },
{ "status.statistics-url", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION },
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
if (!p) return HANDLER_ERROR;
p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *));
for (i = 0; i < srv->config_context->used; i++) {
data_config const* config = (data_config const*)srv->config_context->data[i];
plugin_config *s;
s = calloc(1, sizeof(plugin_config));
s->config_url = buffer_init();
s->status_url = buffer_init();
s->sort = 1;
s->statistics_url = buffer_init();
cv[0].destination = s->status_url;
cv[1].destination = s->config_url;
cv[2].destination = &(s->sort);
cv[3].destination = s->statistics_url;
p->config_storage[i] = s;
if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
return HANDLER_ERROR;
}
}
return HANDLER_GO_ON;
}
static int mod_status_row_append(buffer *b, const char *key, const char *value) {
buffer_append_string_len(b, CONST_STR_LEN(" <tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN(" <td><b>"));
buffer_append_string(b, key);
buffer_append_string_len(b, CONST_STR_LEN("</b></td>\n"));
buffer_append_string_len(b, CONST_STR_LEN(" <td>"));
buffer_append_string(b, value);
buffer_append_string_len(b, CONST_STR_LEN("</td>\n"));
buffer_append_string_len(b, CONST_STR_LEN(" </tr>\n"));
return 0;
}
static int mod_status_header_append(buffer *b, const char *key) {
buffer_append_string_len(b, CONST_STR_LEN(" <tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN(" <th colspan=\"2\">"));
buffer_append_string(b, key);
buffer_append_string_len(b, CONST_STR_LEN("</th>\n"));
buffer_append_string_len(b, CONST_STR_LEN(" </tr>\n"));
return 0;
}
static int mod_status_header_append_sort(buffer *b, void *p_d, const char* key) {
plugin_data *p = p_d;
if (p->conf.sort) {
buffer_append_string_len(b, CONST_STR_LEN("<th class=\"status\"><a href=\"#\" class=\"sortheader\" onclick=\"resort(this);return false;\">"));
buffer_append_string(b, key);
buffer_append_string_len(b, CONST_STR_LEN("<span class=\"sortarrow\">:</span></a></th>\n"));
} else {
buffer_append_string_len(b, CONST_STR_LEN("<th class=\"status\">"));
buffer_append_string(b, key);
buffer_append_string_len(b, CONST_STR_LEN("</th>\n"));
}
return 0;
}
static int mod_status_get_multiplier(double *avg, char *multiplier, int size) {
*multiplier = ' ';
if (*avg > size) { *avg /= size; *multiplier = 'k'; }
if (*avg > size) { *avg /= size; *multiplier = 'M'; }
if (*avg > size) { *avg /= size; *multiplier = 'G'; }
if (*avg > size) { *avg /= size; *multiplier = 'T'; }
if (*avg > size) { *avg /= size; *multiplier = 'P'; }
if (*avg > size) { *avg /= size; *multiplier = 'E'; }
if (*avg > size) { *avg /= size; *multiplier = 'Z'; }
if (*avg > size) { *avg /= size; *multiplier = 'Y'; }
return 0;
}
static handler_t mod_status_handle_server_status_html(server *srv, connection *con, void *p_d) {
plugin_data *p = p_d;
buffer *b = chunkqueue_append_buffer_open(con->write_queue);
size_t j;
double avg;
char multiplier = '\0';
char buf[32];
time_t ts;
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_string_is_empty(con->uri.query) && 0 == memcmp(con->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(con->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 = '↑';\n"
" span.setAttribute('sortdir','up');\n"
" rows.reverse();\n"
" } else {\n"
" span.innerHTML = '↓';\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 ("));
buffer_append_string_buffer(b, con->conf.server_tag);
buffer_append_string_len(b, CONST_STR_LEN(")</h1>"));
buffer_append_string_len(b, CONST_STR_LEN("<table summary=\"status\" class=\"status\">"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Hostname</td><td class=\"string\">"));
buffer_append_string_buffer(b, con->uri.authority);
buffer_append_string_len(b, CONST_STR_LEN(" ("));
buffer_append_string_buffer(b, con->server_name);
buffer_append_string_len(b, CONST_STR_LEN(")</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Uptime</td><td class=\"string\">"));
ts = srv->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"));
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Started at</td><td class=\"string\">"));
ts = srv->startup_ts;
strftime(buf, sizeof(buf) - 1, "%Y-%m-%d %H:%M:%S", localtime(&ts));
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><th colspan=\"2\">absolute (since start)</th></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Requests</td><td class=\"string\">"));
avg = p->abs_requests;
mod_status_get_multiplier(&avg, &multiplier, 1000);
buffer_append_int(b, avg);
buffer_append_string_len(b, CONST_STR_LEN(" "));
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
buffer_append_string_len(b, CONST_STR_LEN("req</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Traffic</td><td class=\"string\">"));
avg = p->abs_traffic_out;
mod_status_get_multiplier(&avg, &multiplier, 1024);
snprintf(buf, sizeof(buf), "%.2f", avg);
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN(" "));
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
buffer_append_string_len(b, CONST_STR_LEN("byte</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><th colspan=\"2\">average (since start)</th></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Requests</td><td class=\"string\">"));
avg = p->abs_requests / (srv->cur_ts - srv->startup_ts);
mod_status_get_multiplier(&avg, &multiplier, 1000);
buffer_append_int(b, avg);
buffer_append_string_len(b, CONST_STR_LEN(" "));
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
buffer_append_string_len(b, CONST_STR_LEN("req/s</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td>Traffic</td><td class=\"string\">"));
avg = p->abs_traffic_out / (srv->cur_ts - srv->startup_ts);
mod_status_get_multiplier(&avg, &multiplier, 1024);
snprintf(buf, sizeof(buf), "%.2f", avg);
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN(" "));
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
buffer_append_string_len(b, CONST_STR_LEN("byte/s</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<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(&avg, &multiplier, 1000);
buffer_append_int(b, avg);
buffer_append_string_len(b, CONST_STR_LEN(" "));
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
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(&avg, &multiplier, 1024);
snprintf(buf, sizeof(buf), "%.2f", avg);
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN(" "));
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
buffer_append_string_len(b, CONST_STR_LEN("byte/s</td></tr>\n"));
buffer_append_string_len(b, CONST_STR_LEN("</table>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<hr />\n<pre>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<b>"));
buffer_append_int(b, srv->conns->used);
buffer_append_string_len(b, CONST_STR_LEN(" connections</b>\n"));
for (j = 0; j < srv->conns->used; j++) {
connection *c = srv->conns->ptr[j];
const char *state;
if (CON_STATE_READ == c->state && !buffer_string_is_empty(c->request.orig_uri)) {
state = "k";
++cstates[CON_STATE_CLOSE+2];
} else {
state = connection_get_short_state(c->state);
++cstates[(c->state <= CON_STATE_CLOSE ? c->state : CON_STATE_CLOSE+1)];
}
buffer_append_string_len(b, state, 1);
if (((j + 1) % 50) == 0) {
buffer_append_string_len(b, CONST_STR_LEN("\n"));
}
}
buffer_append_string_len(b, CONST_STR_LEN("\n\n<table>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr><td style=\"text-align:right\">"));
buffer_append_int(b, cstates[CON_STATE_CLOSE+2]);
buffer_append_string_len(b, CONST_STR_LEN("<td> 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_string_len(b, CONST_STR_LEN("</td><td> "));
buffer_append_string_len(b, connection_get_short_state(j), 1);
buffer_append_string_len(b, CONST_STR_LEN(" = "));
buffer_append_string(b, connection_get_state(j));
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"));
}
buffer_append_string_len(b, CONST_STR_LEN("</table>"));
buffer_append_string_len(b, CONST_STR_LEN("\n</pre><hr />\n<h2>Connections</h2>\n"));
buffer_append_string_len(b, CONST_STR_LEN("<table summary=\"status\" class=\"status\">\n"));
buffer_append_string_len(b, CONST_STR_LEN("<tr>"));
mod_status_header_append_sort(b, p_d, "Client IP");
mod_status_header_append_sort(b, p_d, "Read");
mod_status_header_append_sort(b, p_d, "Written");
mod_status_header_append_sort(b, p_d, "State");
mod_status_header_append_sort(b, p_d, "Time");
mod_status_header_append_sort(b, p_d, "Host");
mod_status_header_append_sort(b, p_d, "URI");
mod_status_header_append_sort(b, p_d, "File");
buffer_append_string_len(b, CONST_STR_LEN("</tr>\n"));
for (j = 0; j < srv->conns->used; j++) {
connection *c = srv->conns->ptr[j];
buffer_append_string_len(b, CONST_STR_LEN("<tr><td class=\"string\">"));
buffer_append_string_buffer(b, c->dst_addr_buf);
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"int\">"));
if (c->request.content_length) {
buffer_append_int(b, c->request_content_queue->bytes_in);
buffer_append_string_len(b, CONST_STR_LEN("/"));
buffer_append_int(b, c->request.content_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, c->write_queue->bytes_out);
buffer_append_string_len(b, CONST_STR_LEN("/"));
buffer_append_int(b, c->write_queue->bytes_out + chunkqueue_length(c->write_queue));
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"string\">"));
if (CON_STATE_READ == c->state && !buffer_string_is_empty(c->request.orig_uri)) {
buffer_append_string_len(b, CONST_STR_LEN("keep-alive"));
} else {
buffer_append_string(b, connection_get_state(c->state));
}
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"int\">"));
buffer_append_int(b, srv->cur_ts - c->request_start);
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"string\">"));
if (buffer_string_is_empty(c->server_name)) {
buffer_append_string_buffer(b, c->uri.authority);
}
else {
buffer_append_string_buffer(b, c->server_name);
}
buffer_append_string_len(b, CONST_STR_LEN("</td><td class=\"string\">"));
if (!buffer_string_is_empty(c->uri.path)) {
buffer_append_string_encoded(b, CONST_BUF_LEN(c->uri.path), ENCODING_HTML);
}
if (!buffer_string_is_empty(c->uri.query)) {
buffer_append_string_len(b, CONST_STR_LEN("?"));
buffer_append_string_encoded(b, CONST_BUF_LEN(c->uri.query), ENCODING_HTML);
}
if (!buffer_string_is_empty(c->request.orig_uri)) {
buffer_append_string_len(b, CONST_STR_LEN(" ("));
buffer_append_string_encoded(b, CONST_BUF_LEN(c->request.orig_uri), 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_buffer(b, c->physical.path);
buffer_append_string_len(b, CONST_STR_LEN("</td></tr>\n"));
}
buffer_append_string_len(b, CONST_STR_LEN(
"</table>\n"));
buffer_append_string_len(b, CONST_STR_LEN(
" </body>\n"
"</html>\n"
));
chunkqueue_append_buffer_commit(con->write_queue);
http_header_response_set(con, 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, connection *con, void *p_d) {
plugin_data *p = p_d;
buffer *b = chunkqueue_append_buffer_open(con->write_queue);
double avg;
time_t ts;
char buf[32];
unsigned int k;
unsigned int l;
/* output total number of requests */
buffer_append_string_len(b, CONST_STR_LEN("Total Accesses: "));
avg = p->abs_requests;
snprintf(buf, sizeof(buf) - 1, "%.0f", avg);
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
/* output total traffic out in kbytes */
buffer_append_string_len(b, CONST_STR_LEN("Total kBytes: "));
avg = p->abs_traffic_out / 1024;
snprintf(buf, sizeof(buf) - 1, "%.0f", avg);
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
/* output uptime */
buffer_append_string_len(b, CONST_STR_LEN("Uptime: "));
ts = srv->cur_ts - srv->startup_ts;
buffer_append_int(b, ts);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
/* output busy servers */
buffer_append_string_len(b, CONST_STR_LEN("BusyServers: "));
buffer_append_int(b, srv->conns->used);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
buffer_append_string_len(b, CONST_STR_LEN("IdleServers: "));
buffer_append_int(b, srv->conns->size - srv->conns->used);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
/* output scoreboard */
buffer_append_string_len(b, CONST_STR_LEN("Scoreboard: "));
for (k = 0; k < srv->conns->used; k++) {
connection *c = srv->conns->ptr[k];
const char *state =
(CON_STATE_READ == c->state && !buffer_string_is_empty(c->request.orig_uri))
? "k"
: connection_get_short_state(c->state);
buffer_append_string_len(b, state, 1);
}
for (l = 0; l < srv->conns->size - srv->conns->used; l++) {
buffer_append_string_len(b, CONST_STR_LEN("_"));
}
buffer_append_string_len(b, CONST_STR_LEN("\n"));
chunkqueue_append_buffer_commit(con->write_queue);
/* set text/plain output */
http_header_response_set(con, 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, connection *con, void *p_d) {
plugin_data *p = p_d;
buffer *b = chunkqueue_append_buffer_open(con->write_queue);
double avg;
time_t ts;
char buf[32];
size_t j;
unsigned int jsonp = 0;
if (buffer_string_length(con->uri.query) >= sizeof("jsonp=")-1
&& 0 == memcmp(con->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 = con->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_string_len(b, f, len);
buffer_append_string_len(b, CONST_STR_LEN("("));
jsonp = 1;
}
}
/* output total number of requests */
buffer_append_string_len(b, CONST_STR_LEN("{\n\t\"RequestsTotal\": "));
avg = p->abs_requests;
snprintf(buf, sizeof(buf) - 1, "%.0f", avg);
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN(",\n"));
/* output total traffic out in kbytes */
buffer_append_string_len(b, CONST_STR_LEN("\t\"TrafficTotal\": "));
avg = p->abs_traffic_out / 1024;
snprintf(buf, sizeof(buf) - 1, "%.0f", avg);
buffer_append_string(b, buf);
buffer_append_string_len(b, CONST_STR_LEN(",\n"));
/* output uptime */
buffer_append_string_len(b, CONST_STR_LEN("\t\"Uptime\": "));
ts = srv->cur_ts - srv->startup_ts;
buffer_append_int(b, ts);
buffer_append_string_len(b, CONST_STR_LEN(",\n"));
/* output busy servers */
buffer_append_string_len(b, CONST_STR_LEN("\t\"BusyServers\": "));
buffer_append_int(b, srv->conns->used);
buffer_append_string_len(b, CONST_STR_LEN(",\n"));
buffer_append_string_len(b, CONST_STR_LEN("\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(con->write_queue);
/* set text/plain output */
http_header_response_set(con, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("application/javascript"));
return 0;
}
static handler_t mod_status_handle_server_statistics(server *srv, connection *con, void *p_d) {
buffer *b;
size_t i;
array *st = srv->status;
UNUSED(p_d);
if (0 == st->used) {
/* we have nothing to send */
con->http_status = 204;
con->file_finished = 1;
return HANDLER_FINISHED;
}
b = chunkqueue_append_buffer_open(con->write_queue);
for (i = 0; i < st->used; i++) {
size_t ndx = st->sorted[i];
buffer_append_string_buffer(b, st->data[ndx]->key);
buffer_append_string_len(b, CONST_STR_LEN(": "));
buffer_append_int(b, ((data_integer *)(st->data[ndx]))->value);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
}
chunkqueue_append_buffer_commit(con->write_queue);
http_header_response_set(con, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/plain"));
con->http_status = 200;
con->file_finished = 1;
return HANDLER_FINISHED;
}
static handler_t mod_status_handle_server_status(server *srv, connection *con, void *p_d) {
if (buffer_is_equal_string(con->uri.query, CONST_STR_LEN("auto"))) {
mod_status_handle_server_status_text(srv, con, p_d);
} else if (buffer_string_length(con->uri.query) >= sizeof("json")-1
&& 0 == memcmp(con->uri.query->ptr, CONST_STR_LEN("json"))) {
mod_status_handle_server_status_json(srv, con, p_d);
} else {
mod_status_handle_server_status_html(srv, con, p_d);
}
con->http_status = 200;
con->file_finished = 1;
return HANDLER_FINISHED;
}
static handler_t mod_status_handle_server_config(server *srv, connection *con, void *p_d) {
plugin_data *p = p_d;
buffer *b = chunkqueue_append_buffer_open(con->write_queue);
buffer *m = p->module_list;
size_t i;
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"
" </head>\n"
" <body>\n"
" <h1>"));
buffer_append_string_buffer(b, con->conf.server_tag);
buffer_append_string_len(b, CONST_STR_LEN(
"</h1>\n"
" <table summary=\"status\" border=\"1\">\n"));
mod_status_header_append(b, "Server-Features");
#ifdef HAVE_PCRE_H
mod_status_row_append(b, "RegEx Conditionals", "enabled");
#else
mod_status_row_append(b, "RegEx Conditionals", "disabled - pcre missing");
#endif
mod_status_header_append(b, "Network Engine");
mod_status_row_append(b, "fd-Event-Handler", srv->srvconf.event_handler->ptr);
mod_status_header_append(b, "Config-File-Settings");
for (i = 0; i < srv->plugins.used; i++) {
plugin **ps = srv->plugins.ptr;
plugin *pl = ps[i];
if (i == 0) {
buffer_copy_buffer(m, pl->name);
} else {
buffer_append_string_len(m, CONST_STR_LEN("<br />"));
buffer_append_string_buffer(m, pl->name);
}
}
mod_status_row_append(b, "Loaded Modules", m->ptr);
buffer_append_string_len(b, CONST_STR_LEN(" </table>\n"));
buffer_append_string_len(b, CONST_STR_LEN(
" </body>\n"
"</html>\n"
));
chunkqueue_append_buffer_commit(con->write_queue);
http_header_response_set(con, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/html"));
con->http_status = 200;
con->file_finished = 1;
return HANDLER_FINISHED;
}
#define PATCH(x) \
p->conf.x = s->x;
static int mod_status_patch_connection(server *srv, connection *con, plugin_data *p) {
size_t i, j;
plugin_config *s = p->config_storage[0];
PATCH(status_url);
PATCH(config_url);
PATCH(sort);
PATCH(statistics_url);
/* skip the first, the global context */
for (i = 1; i < srv->config_context->used; i++) {
data_config *dc = (data_config *)srv->config_context->data[i];
s = p->config_storage[i];
/* condition didn't match */
if (!config_check_cond(srv, con, dc)) continue;
/* merge config */
for (j = 0; j < dc->value->used; j++) {
data_unset *du = dc->value->data[j];
if (buffer_is_equal_string(du->key, CONST_STR_LEN("status.status-url"))) {
PATCH(status_url);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("status.config-url"))) {
PATCH(config_url);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("status.enable-sort"))) {
PATCH(sort);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("status.statistics-url"))) {
PATCH(statistics_url);
}
}
}
return 0;
}
static handler_t mod_status_handler(server *srv, connection *con, void *p_d) {
plugin_data *p = p_d;
if (con->mode != DIRECT) return HANDLER_GO_ON;
mod_status_patch_connection(srv, con, p);
if (!buffer_string_is_empty(p->conf.status_url) &&
buffer_is_equal(p->conf.status_url, con->uri.path)) {
return mod_status_handle_server_status(srv, con, p_d);
} else if (!buffer_string_is_empty(p->conf.config_url) &&
buffer_is_equal(p->conf.config_url, con->uri.path)) {
return mod_status_handle_server_config(srv, con, p_d);
} else if (!buffer_string_is_empty(p->conf.statistics_url) &&
buffer_is_equal(p->conf.statistics_url, con->uri.path)) {
return mod_status_handle_server_statistics(srv, con, p_d);
}
return HANDLER_GO_ON;
}
TRIGGER_FUNC(mod_status_trigger) {
plugin_data *p = p_d;
size_t i;
/* check all connections */
for (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;
UNUSED(srv);
p->requests++;
p->rel_requests++;
p->abs_requests++;
p->bytes_written += 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 = buffer_init_string("status");
p->init = mod_status_init;
p->cleanup = mod_status_free;
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;
p->data = NULL;
return 0;
}
↑ V522 There might be dereferencing of a potential null pointer 'p'. Check lines: 59, 57.
↑ V522 There might be dereferencing of a potential null pointer 's'. Check lines: 123, 122.
↑ V522 There might be dereferencing of a potential null pointer 'p->config_storage'. Check lines: 133, 116.
↑ V1016 Expression 'c->state <= CON_STATE_CLOSE' is always true.