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lighttpd1.4/src/mod_status.c

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#define _GNU_SOURCE
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include "server.h"
#include "connections.h"
#include "response.h"
#include "connections.h"
#include "log.h"
#include "plugin.h"
#include "inet_ntop_cache.h"
typedef struct {
buffer *config_url;
buffer *status_url;
} 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];
buffer_free(s->status_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 },
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
if (!p) return HANDLER_ERROR;
p->config_storage = malloc(srv->config_context->used * sizeof(specific_config *));
for (i = 0; i < srv->config_context->used; i++) {
plugin_config *s;
s = malloc(sizeof(plugin_config));
s->config_url = buffer_init();
s->status_url = buffer_init();
cv[0].destination = s->status_url;
cv[1].destination = s->config_url;
p->config_storage[i] = s;
if (0 != config_insert_values_global(srv, ((data_config *)srv->config_context->data[i])->value, cv)) {
return HANDLER_ERROR;
}
}
return HANDLER_GO_ON;
}
static int mod_status_row_append(buffer *b, const char *key, const char *value) {
BUFFER_APPEND_STRING_CONST(b, " <tr>\n");
BUFFER_APPEND_STRING_CONST(b, " <td><b>");
buffer_append_string(b, key);
BUFFER_APPEND_STRING_CONST(b, "</b></td>\n");
BUFFER_APPEND_STRING_CONST(b, " <td>");
buffer_append_string(b, value);
BUFFER_APPEND_STRING_CONST(b, "</td>\n");
BUFFER_APPEND_STRING_CONST(b, " </tr>\n");
return 0;
}
static int mod_status_header_append(buffer *b, const char *key) {
BUFFER_APPEND_STRING_CONST(b, " <tr>\n");
BUFFER_APPEND_STRING_CONST(b, " <th colspan=\"2\">");
buffer_append_string(b, key);
BUFFER_APPEND_STRING_CONST(b, "</th>\n");
BUFFER_APPEND_STRING_CONST(b, " </tr>\n");
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;
size_t j;
double avg;
char multiplier = '\0';
char buf[32];
time_t ts;
int days, hours, mins, seconds;
b = chunkqueue_get_append_buffer(con->write_queue);
BUFFER_COPY_STRING_CONST(b,
"<?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");
BUFFER_APPEND_STRING_CONST(b,
" <style type=\"text/css\">\n"
"th.status { background-color: black; color: white; }\n"
"table.status { border: black solid thin; }\n"
"td.int { background-color: #f0f0f0; text-align: right }\n"
"td.string { background-color: #f0f0f0; text-align: left }\n"
" </style>\n");
BUFFER_APPEND_STRING_CONST(b,
" </head>\n"
" <body>\n");
/* connection listing */
BUFFER_APPEND_STRING_CONST(b, "<h1>Server-Status</h1>");
BUFFER_APPEND_STRING_CONST(b, "<table class=\"status\">");
BUFFER_APPEND_STRING_CONST(b, "<tr><td>Hostname</td><td class=\"string\">");
buffer_append_string_buffer(b, con->uri.authority);
BUFFER_APPEND_STRING_CONST(b, " (");
buffer_append_string_buffer(b, con->server_name);
BUFFER_APPEND_STRING_CONST(b, ")</td></tr>\n");
BUFFER_APPEND_STRING_CONST(b, "<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_long(b, days);
BUFFER_APPEND_STRING_CONST(b, " days ");
}
if (hours) {
buffer_append_long(b, hours);
BUFFER_APPEND_STRING_CONST(b, " hours ");
}
if (mins) {
buffer_append_long(b, mins);
BUFFER_APPEND_STRING_CONST(b, " min ");
}
buffer_append_long(b, seconds);
BUFFER_APPEND_STRING_CONST(b, " s");
BUFFER_APPEND_STRING_CONST(b, "</td></tr>\n");
BUFFER_APPEND_STRING_CONST(b, "<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_CONST(b, "</td></tr>\n");
BUFFER_APPEND_STRING_CONST(b, "<tr><th colspan=\"2\">absolute (since start)</th></tr>\n");
BUFFER_APPEND_STRING_CONST(b, "<tr><td>Requests</td><td class=\"string\">");
avg = p->abs_requests;
multiplier = '\0';
if (avg > 10000) { avg /= 1000; multiplier = 'k'; }
if (avg > 10000) { avg /= 1000; multiplier = 'M'; }
if (avg > 10000) { avg /= 1000; multiplier = 'G'; }
if (avg > 10000) { avg /= 1000; multiplier = 'T'; }
if (avg > 10000) { avg /= 1000; multiplier = 'P'; }
if (avg > 10000) { avg /= 1000; multiplier = 'E'; }
if (avg > 10000) { avg /= 1000; multiplier = 'Z'; }
if (avg > 10000) { avg /= 1000; multiplier = 'Y'; }
buffer_append_long(b, avg);
BUFFER_APPEND_STRING_CONST(b, " ");
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
BUFFER_APPEND_STRING_CONST(b, "req</td></tr>\n");
BUFFER_APPEND_STRING_CONST(b, "<tr><td>Traffic</td><td class=\"string\">");
avg = p->abs_traffic_out;
multiplier = '\0';
if (avg > 10240) { avg /= 1024; multiplier = 'k'; }
if (avg > 10240) { avg /= 1024; multiplier = 'M'; }
if (avg > 10240) { avg /= 1024; multiplier = 'G'; }
if (avg > 10240) { avg /= 1024; multiplier = 'T'; }
if (avg > 10240) { avg /= 1024; multiplier = 'P'; }
if (avg > 10240) { avg /= 1024; multiplier = 'E'; }
if (avg > 10240) { avg /= 1024; multiplier = 'Z'; }
if (avg > 10240) { avg /= 1024; multiplier = 'Y'; }
buffer_append_long(b, avg);
BUFFER_APPEND_STRING_CONST(b, " ");
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
BUFFER_APPEND_STRING_CONST(b, "byte</td></tr>\n");
BUFFER_APPEND_STRING_CONST(b, "<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_CONST(b, "<tr><td>Requests</td><td class=\"string\">");
multiplier = '\0';
if (avg > 10000) { avg /= 1000; multiplier = 'k'; }
if (avg > 10000) { avg /= 1000; multiplier = 'M'; }
if (avg > 10000) { avg /= 1000; multiplier = 'G'; }
if (avg > 10000) { avg /= 1000; multiplier = 'T'; }
if (avg > 10000) { avg /= 1000; multiplier = 'P'; }
if (avg > 10000) { avg /= 1000; multiplier = 'E'; }
if (avg > 10000) { avg /= 1000; multiplier = 'Z'; }
if (avg > 10000) { avg /= 1000; multiplier = 'Y'; }
buffer_append_long(b, avg);
BUFFER_APPEND_STRING_CONST(b, " ");
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
BUFFER_APPEND_STRING_CONST(b, "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_CONST(b, "<tr><td>Traffic</td><td class=\"string\">");
multiplier = '\0';
if (avg > 10240) { avg /= 1024; multiplier = 'k'; }
if (avg > 10240) { avg /= 1024; multiplier = 'M'; }
if (avg > 10240) { avg /= 1024; multiplier = 'G'; }
if (avg > 10240) { avg /= 1024; multiplier = 'T'; }
if (avg > 10240) { avg /= 1024; multiplier = 'P'; }
if (avg > 10240) { avg /= 1024; multiplier = 'E'; }
if (avg > 10240) { avg /= 1024; multiplier = 'Z'; }
if (avg > 10240) { avg /= 1024; multiplier = 'Y'; }
buffer_append_long(b, avg);
BUFFER_APPEND_STRING_CONST(b, " ");
if (multiplier) buffer_append_string_len(b, &multiplier, 1);
BUFFER_APPEND_STRING_CONST(b, "byte/s</td></tr>\n");
BUFFER_APPEND_STRING_CONST(b, "</table>\n");
BUFFER_APPEND_STRING_CONST(b, "<hr />\n<pre><b>legend</b>\n");
BUFFER_APPEND_STRING_CONST(b, ". = connect, C = close, E = hard error\n");
BUFFER_APPEND_STRING_CONST(b, "r = read, R = read-POST, W = write, h = handle-request\n");
BUFFER_APPEND_STRING_CONST(b, "q = request-start, Q = request-end\n");
BUFFER_APPEND_STRING_CONST(b, "s = response-start, S = response-end\n");
BUFFER_APPEND_STRING_CONST(b, "<b>");
buffer_append_long(b, srv->conns->used);
BUFFER_APPEND_STRING_CONST(b, " connections</b>\n");
for (j = 0; j < srv->conns->used; j++) {
connection *c = srv->conns->ptr[j];
const char *state = connection_get_short_state(c->state);
buffer_append_string_len(b, state, 1);
if (((j + 1) % 50) == 0) {
BUFFER_APPEND_STRING_CONST(b, "\n");
}
}
BUFFER_APPEND_STRING_CONST(b, "\n</pre><hr />\n<h2>Connections</h2>\n");
BUFFER_APPEND_STRING_CONST(b, "<table class=\"status\">\n");
BUFFER_APPEND_STRING_CONST(b, "<tr>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">Client IP</th>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">Read</th>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">Written</th>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">State</th>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">Time</th>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">Host</th>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">URI</th>");
BUFFER_APPEND_STRING_CONST(b, "<th class=\"status\">File</th>");
BUFFER_APPEND_STRING_CONST(b, "</tr>\n");
for (j = 0; j < srv->conns->used; j++) {
connection *c = srv->conns->ptr[j];
BUFFER_APPEND_STRING_CONST(b, "<tr><td class=\"string\">");
buffer_append_string(b, inet_ntop_cache_get_ip(srv, &(c->dst_addr)));
BUFFER_APPEND_STRING_CONST(b, "</td><td class=\"int\">");
if (con->request.content_length) {
buffer_append_long(b, c->request.content->used);
BUFFER_APPEND_STRING_CONST(b, "/");
buffer_append_long(b, c->request.content_length);
} else {
BUFFER_APPEND_STRING_CONST(b, "0/0");
}
BUFFER_APPEND_STRING_CONST(b, "</td><td class=\"int\">");
buffer_append_off_t(b, chunkqueue_written(c->write_queue));
BUFFER_APPEND_STRING_CONST(b, "/");
buffer_append_off_t(b, chunkqueue_length(c->write_queue));
BUFFER_APPEND_STRING_CONST(b, "</td><td class=\"string\">");
buffer_append_string(b, connection_get_state(c->state));
BUFFER_APPEND_STRING_CONST(b, "</td><td class=\"int\">");
buffer_append_long(b, srv->cur_ts - c->request_start);
BUFFER_APPEND_STRING_CONST(b, "</td><td class=\"string\">");
buffer_append_string_buffer(b, c->server_name);
BUFFER_APPEND_STRING_CONST(b, "</td><td class=\"string\">");
buffer_append_string_html_encoded(b, c->uri.path->ptr);
BUFFER_APPEND_STRING_CONST(b, "</td><td class=\"string\">");
buffer_append_string_buffer(b, c->physical.path);
BUFFER_APPEND_STRING_CONST(b, "</td></tr>\n");
}
BUFFER_APPEND_STRING_CONST(b,
"</table>\n");
BUFFER_APPEND_STRING_CONST(b,
" </body>\n"
"</html>\n"
);
response_header_overwrite(srv, con, 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;
double avg;
b = chunkqueue_get_append_buffer(con->write_queue);
/* output total number of requests */
BUFFER_APPEND_STRING_CONST(b, "Total Accesses: ");
avg = p->abs_requests;
buffer_append_long(b, avg);
BUFFER_APPEND_STRING_CONST(b, "\n");
/* output total traffic out in kbytes */
BUFFER_APPEND_STRING_CONST(b, "Total kBytes: ");
avg = p->abs_traffic_out / 1024;
buffer_append_long(b, avg);
BUFFER_APPEND_STRING_CONST(b, "\n");
/* set text/plain output */
response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/plain"));
return 0;
}
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 {
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, *m = p->module_list;
size_t i;
struct ev_map { fdevent_handler_t et; const char *name; } event_handlers[] =
{
/* - poll is most reliable
* - select works everywhere
* - linux-* are experimental
*/
#ifdef USE_POLL
{ FDEVENT_HANDLER_POLL, "poll" },
#endif
#ifdef USE_SELECT
{ FDEVENT_HANDLER_SELECT, "select" },
#endif
#ifdef USE_LINUX_EPOLL
{ FDEVENT_HANDLER_LINUX_SYSEPOLL, "linux-sysepoll" },
#endif
#ifdef USE_LINUX_SIGIO
{ FDEVENT_HANDLER_LINUX_RTSIG, "linux-rtsig" },
#endif
#ifdef USE_SOLARIS_DEVPOLL
{ FDEVENT_HANDLER_SOLARIS_DEVPOLL,"solaris-devpoll" },
#endif
#ifdef USE_FREEBSD_KQUEUE
{ FDEVENT_HANDLER_FREEBSD_KQUEUE, "freebsd-kqueue" },
#endif
{ FDEVENT_HANDLER_UNSET, NULL }
};
b = chunkqueue_get_append_buffer(con->write_queue);
BUFFER_COPY_STRING_CONST(b,
"<?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>" PACKAGE_NAME " " PACKAGE_VERSION "</h1>\n"
" <table border=\"1\">\n");
mod_status_header_append(b, "Server-Features");
#ifdef HAVE_PCRE_H
mod_status_row_append(b, "Rewrite Engine", "enabled");
#else
mod_status_row_append(b, "Rewrite Engine", "disabled - pcre missing");
#endif
#ifdef HAVE_ZLIB_H
mod_status_row_append(b, "On-the-Fly Output Compression", "enabled");
#else
mod_status_row_append(b, "On-the-Fly Output Compression", "disabled - zlib missing");
#endif
mod_status_header_append(b, "Network Engine");
for (i = 0; event_handlers[i].name; i++) {
if (event_handlers[i].et == srv->event_handler) {
mod_status_row_append(b, "fd-Event-Handler", event_handlers[i].name);
break;
}
}
mod_status_header_append(b, "Config-File-Settings");
mod_status_row_append(b, "Directory Listings", con->conf.dir_listing ? "enabled" : "disabled");
for (i = 0; i < srv->plugins.used; i++) {
plugin **ps = srv->plugins.ptr;
plugin *pl = ps[i];
if (i == 0) {
buffer_copy_string_buffer(m, pl->name);
} else {
BUFFER_APPEND_STRING_CONST(m, "<br />");
buffer_append_string_buffer(m, pl->name);
}
}
mod_status_row_append(b, "Loaded Modules", m->ptr);
BUFFER_APPEND_STRING_CONST(b, " </table>\n");
BUFFER_APPEND_STRING_CONST(b,
" </body>\n"
"</html>\n"
);
response_header_overwrite(srv, con, 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_skeleton_patch_connection(server *srv, connection *con, plugin_data *p, const char *stage, size_t stage_len) {
size_t i, j;
/* 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];
plugin_config *s = p->config_storage[i];
/* not our stage */
if (!buffer_is_equal_string(dc->comp_key, stage, stage_len)) continue;
/* 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);
}
}
}
return 0;
}
static int mod_skeleton_setup_connection(server *srv, connection *con, plugin_data *p) {
plugin_config *s = p->config_storage[0];
UNUSED(srv);
UNUSED(con);
PATCH(status_url);
PATCH(config_url);
return 0;
}
#undef PATCH
static handler_t mod_status_handler(server *srv, connection *con, void *p_d) {
plugin_data *p = p_d;
size_t i;
mod_skeleton_setup_connection(srv, con, p);
for (i = 0; i < srv->config_patches->used; i++) {
buffer *patch = srv->config_patches->ptr[i];
mod_skeleton_patch_connection(srv, con, p, CONST_BUF_LEN(patch));
}
if (!buffer_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_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);
}
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) {
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;
}