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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
static char *ngx_http_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_command_t ngx_http_status_commands[] = {
{ ngx_string("status"),
NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_http_status,
0,
0,
NULL },
ngx_null_command
};
ngx_http_module_t ngx_http_status_module_ctx = {
NULL, /* pre conf */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
NULL, /* create location configuration */
NULL /* merge location configuration */
};
ngx_module_t ngx_http_status_module = {
NGX_MODULE,
&ngx_http_status_module_ctx, /* module context */
ngx_http_status_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init module */
NULL /* init process */
};
static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r)
{
size_t len;
ngx_int_t rc;
ngx_uint_t i, dash;
ngx_buf_t *b;
ngx_chain_t out;
ngx_connection_t *c;
ngx_http_request_t *rq;
if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) {
return NGX_HTTP_NOT_ALLOWED;
}
rc = ngx_http_discard_body(r);
if (rc != NGX_OK && rc != NGX_AGAIN) {
return rc;
}
if (!(r->headers_out.content_type =
ngx_http_add_header(&r->headers_out, ngx_http_headers_out)))
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
r->headers_out.content_type->key.len = 0;
r->headers_out.content_type->key.data = NULL;
r->headers_out.content_type->value.len = sizeof("text/plain") - 1;
r->headers_out.content_type->value.data = (u_char *) "text/plain";
if (r->method == NGX_HTTP_HEAD) {
r->headers_out.status = NGX_HTTP_OK;
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
}
len = 0;
dash = 0;
c = ngx_cycle->connections;
for (i = 0; i < ngx_cycle->connection_n; i++) {
rq = c[i].data;
if (rq && rq->signature == NGX_HTTP_MODULE) {
if (rq->request_line.len) {
len += NGX_INT32_LEN + 1 + rq->request_line.len + 2 + 2;
dash = 0;
}
continue;
}
if (!dash) {
len += 3;
dash = 1;
}
}
if (!(b = ngx_create_temp_buf(r->pool, len))) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
dash = 0;
for (i = 0; i < ngx_cycle->connection_n; i++) {
rq = c[i].data;
if (rq && rq->signature == NGX_HTTP_MODULE) {
#if 0
switch (rq->http_state) {
case NGX_HTTP_INITING_REQUEST_STATE:
case NGX_HTTP_KEEPALIVE_STATE:
}
#endif
if (rq->request_line.len) {
b->last += ngx_snprintf((char *) b->last, NGX_INT32_LEN,
"%u", i);
*(b->last++) = ' ';
*(b->last++) = '"';
b->last = ngx_cpymem(b->last, r->request_line.data,
r->request_line.len);
*(b->last++) = '"';
*(b->last++) = CR; *(b->last++) = LF;
dash = 0;
}
continue;
}
if (!dash) {
*(b->last++) = '-'; *(b->last++) = CR; *(b->last++) = LF;
dash = 1;
}
}
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = b->last - b->pos;
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
if (!r->main) {
b->last_buf = 1;
}
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
static char *ngx_http_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_conf_ctx_t *ctx;
ngx_http_core_loc_conf_t *clcf;
ctx = cf->ctx;
clcf = ctx->loc_conf[ngx_http_core_module.ctx_index];
clcf->handler = ngx_http_status_handler;
return NGX_CONF_OK;
}
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