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Apacheモジュール 1.3から2.2への移植: mod_reqinfo

Apacheモジュール プログラミングガイド の中のサンプルプログラムをApache1.3からApache2.2に書き換えたのでそのときのメモ。

#include "httpd.h"
#include "http_config.h"
#include "http_protocol.h"
#include "http_core.h"
#include "ap_config.h"

/* The sample content handler */
static int reqinfo_handler(request_rec *r)
{
    if (strcmp(r->handler, "reqinfo")) {
        return DECLINED;
    }
    r->content_type = "text/html";      

    if (r->header_only)
	return OK;
    ap_rputs("<html><body>\n", r);
    /* リクエストの情報 */
    ap_rprintf(r, "REQUEST_METHOD:   %s<br>\n", r->method);
    ap_rprintf(r, "QUERY_STRING:     %s<br>\n", r->args ? r->args : "");
    ap_rprintf(r, "SCRIPT_NAME:      %s<br>\n", r->uri);
    ap_rprintf(r, "PATH_INFO:        %s<br>\n",
               r->path_info ? r->path_info : "");
    ap_rprintf(r, "SCRIPT_FILENAME:  %s<br>\n", r->filename);
    /* リクエストヘッダの情報 */
    ap_rprintf(r, "HTTP_USER_AGENT:  %s<br>\n",
               apr_table_get(r->headers_in, "User-Agent") ?
               apr_table_get(r->headers_in, "User-Agent") : "");
    ap_rprintf(r, "HTTP_REFERER:     %s<br>\n",
               apr_table_get(r->headers_in, "Referer") ?
               apr_table_get(r->headers_in, "Referer") : "");
    /* Client/Server間接続の情報 */
    ap_rprintf(r, "SERVER_ADDR:      %s<br>\n", r->connection->local_ip);
    ap_rprintf(r, "REMOTE_ADDR:      %s<br>\n", r->connection->remote_ip);
    ap_rprintf(r, "REMOTE_USER:      %s<br>\n",
               r->user ? r->user : "");
    /* Serverの設定情報 */
    ap_rprintf(r, "DOCUMENT_ROOT:    %s<br>\n", ap_document_root(r));
    ap_rprintf(r, "SERVER_ADMIN:     %s<br>\n", r->server->server_admin);
    ap_rprintf(r, "SERVER_NAME:      %s<br>\n", ap_get_server_name(r));
    ap_rprintf(r, "SERVER_PORT:      %u<br>\n", ap_get_server_port(r));
    ap_rprintf(r, "SERVER_SOFTWARE:  %s<br>\n", ap_get_server_version());
    ap_rprintf(r, "SERVER_SIGNATURE: %s<br>\n", ap_psignature("", r));

    ap_rputs("</body></html>", r);

    return OK;
}

static void reqinfo_register_hooks(apr_pool_t *p)
{
    ap_hook_handler(reqinfo_handler, NULL, NULL, APR_HOOK_MIDDLE);
}

/* Dispatch list for API hooks */
module AP_MODULE_DECLARE_DATA reqinfo_module = {
    STANDARD20_MODULE_STUFF, 
    NULL,                  /* create per-dir    config structures */
    NULL,                  /* merge  per-dir    config structures */
    NULL,                  /* create per-server config structures */
    NULL,                  /* merge  per-server config structures */
    NULL,                  /* table of config file commands       */
    reqinfo_register_hooks  /* register hooks                      */
};