Skip to content
This repository
Fetching contributors…

Cannot retrieve contributors at this time

file 204 lines (163 sloc) 4.925 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/* Cherokee
*
* Authors:
* Alvaro Lopez Ortega <alvaro@alobbs.com>
*
* Copyright (C) 2001-2011 Alvaro Lopez Ortega
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/

#include "common-internal.h"
#include "handler_error_nn.h"

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>

#include "thread.h"
#include "connection.h"
#include "connection-protected.h"
#include "module.h"
#include "plugin_loader.h"
#include "connection.h"
#include "levenshtein_distance.h"
#include "handler_error.h"
#include "util.h"


/* Plug-in initialization
*/
PLUGIN_INFO_HANDLER_EASIEST_INIT (error_nn, http_all_methods);


/* Methods implementation
*/
ret_t
cherokee_handler_error_nn_configure (cherokee_config_node_t *conf,
cherokee_server_t *srv,
cherokee_module_props_t **_props)
{
UNUSED(conf);
UNUSED(srv);
UNUSED(_props);

return ret_ok;
}


static ret_t
get_nearest_from_directory (char *directory, char *request, cherokee_buffer_t *output)
{
int re;
int dis;
DIR *dir;
char entry_buf[512];
struct dirent *entry;
int min_diff = 9999;
cherokee_boolean_t found = false;

dir = cherokee_opendir (directory);
if (dir == NULL)
goto go_out;

for (;;) {
re = cherokee_readdir (dir, (struct dirent *)entry_buf, &entry);
if ((re != 0) || (entry == NULL))
break;

if (!strncmp (entry->d_name, ".", 1)) continue;
if (!strncmp (entry->d_name, "..", 2)) continue;

dis = distance ((char *)request, entry->d_name);
if (dis < min_diff) {
min_diff = dis;
found = true;

cherokee_buffer_clean (output);
cherokee_buffer_add (output, entry->d_name, strlen(entry->d_name));
}

}

cherokee_closedir (dir);

go_out:
return (found) ? ret_ok : ret_error;
}


static ret_t
get_nearest_name (cherokee_connection_t *conn,
cherokee_buffer_t *local_dir,
cherokee_buffer_t *request,
cherokee_buffer_t *output)
{
ret_t ret;
char *rest;
cherokee_thread_t *thread = CONN_THREAD(conn);
cherokee_buffer_t *req = THREAD_TMP_BUF1(thread);

/* Build the local request path
*/
rest = strrchr (request->buf, '/');
if (rest == NULL) {
return ret_error;
}
rest++;

cherokee_buffer_clean (req);
cherokee_buffer_add_buffer (req, local_dir);
cherokee_buffer_add (req, request->buf, rest - request->buf);

/* Copy the new filename to the output buffer
*/
ret = get_nearest_from_directory (req->buf, rest, output);
if (unlikely (ret != ret_ok)) {
return ret_error;
}

/* Prepend the rest of the old request to the new filename
*/
cherokee_buffer_prepend (output, request->buf, rest - request->buf);
return ret_ok;
}


static ret_t
error_nn_init (cherokee_handler_error_t *hdl)
{
ret_t ret;
cherokee_connection_t *conn = HANDLER_CONN(hdl);

cherokee_buffer_clean (&conn->redirect);

ret = get_nearest_name (conn, &conn->local_directory, &conn->request, &conn->redirect);
if (unlikely (ret != ret_ok)) {
conn->error_code = http_not_found;
return ret_error;
}

conn->error_code = http_moved_temporarily;
return ret_error;
}

static ret_t
error_nn_add_headers (cherokee_handler_error_t *hdl, cherokee_buffer_t *buffer)
{
UNUSED(hdl);
UNUSED(buffer);

return ret_ok;
}

static ret_t
error_nn_step (cherokee_handler_error_t *hdl, cherokee_buffer_t *buffer)
{
UNUSED(hdl);
UNUSED(buffer);

return ret_eof;
}

static ret_t
error_nn_free (cherokee_handler_error_t *hdl)
{
UNUSED(hdl);

return ret_ok;
}


ret_t
cherokee_handler_error_nn_new (cherokee_handler_t **hdl,
cherokee_connection_t *conn,
cherokee_module_props_t *props)
{
CHEROKEE_NEW_STRUCT (n, handler_error_nn);

cherokee_handler_init_base (HANDLER(n), conn, HANDLER_PROPS(props), PLUGIN_INFO_HANDLER_PTR(error_nn));
HANDLER(n)->support = hsupport_error | hsupport_length;

MODULE(n)->init = (handler_func_init_t) error_nn_init;
MODULE(n)->free = (module_func_free_t) error_nn_free;
HANDLER(n)->step = (handler_func_step_t) error_nn_step;
HANDLER(n)->add_headers = (handler_func_add_headers_t) error_nn_add_headers;

*hdl = HANDLER(n);
return ret_ok;
}
Something went wrong with that request. Please try again.