Project

General

Profile

Feature #1259 ยป mod_autoext.c

Special, 2007-07-06 23:08

 
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include "base.h"
#include "log.h"
#include "buffer.h"

#include "plugin.h"

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

/*
* Copyright (c) 2007 John Brooks (special@inspircd.org)
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/

/* plugin config for all request/connections */

typedef struct {
array *suffixes;
} plugin_config;

typedef struct {
PLUGIN_DATA;

plugin_config **config_storage;
plugin_config conf;
} plugin_data;

/* init the plugin data */
INIT_FUNC(mod_autoext_init)
{
plugin_data *p;
p = calloc(1, sizeof(*p));
return p;
}

/* detroy the plugin data */
FREE_FUNC(mod_autoext_free)
{
plugin_data *p = p_d;
UNUSED(srv);
if (!p)
return HANDLER_GO_ON;
if (p->config_storage)
{
size_t i;

for (i = 0; i < srv->config_context->used; i++)
{
plugin_config *s = p->config_storage[i];
if (!s)
continue;

array_free(s->suffixes);
free(s);
}
free(p->config_storage);
}

free(p);

return HANDLER_GO_ON;
}

/* handle plugin config and check values */

SETDEFAULTS_FUNC(mod_autoext_set_defaults)
{
plugin_data *p = p_d;
size_t i = 0;

config_values_t cv[] = {
{ "autoext.suffixes", NULL, T_CONFIG_ARRAY, 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(specific_config*));

for (i = 0; i < srv->config_context->used; i++)
{
plugin_config *s;

s = calloc(1, sizeof(plugin_config));
s->suffixes = array_init();

cv[0].destination = s->suffixes;

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;
}

#define PATCH(x) p->conf.x = s->x;

static int mod_autoext_patch_connection(server *srv, connection *con, plugin_data *p)
{
size_t i, j;
plugin_config *s = p->config_storage[0];

PATCH(suffixes);

/* 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("autoext.suffixes")))
{
PATCH(suffixes);
}
}
}

return 0;
}
#undef PATCH

PHYSICALPATH_FUNC(mod_autoext_handle_physical)
{
struct stat st;
size_t i, k;
plugin_data *p = (plugin_data *) p_d;
if (stat(con->physical.path->ptr, &st) == 0)
return HANDLER_GO_ON;
buffer_copy_string_buffer(srv->tmp_buf, con->physical.path);
mod_autoext_patch_connection(srv, con, p);
for (i = 1; i < srv->tmp_buf->used; i++)
{
if (srv->tmp_buf->ptr[i] != '/' && srv->tmp_buf->ptr[i] != '\0')
continue;
srv->tmp_buf->ptr[i] = '\0';
if (stat(srv->tmp_buf->ptr, &st) != 0 && errno == ENOENT)
{
// We have our file that doesn't exist! Now, find out which suffix, if any, this has
buffer *apbuf = buffer_init();
buffer_copy_string(apbuf, srv->tmp_buf->ptr);
int apbaselen = apbuf->used;
for (k = 0; k < p->conf.suffixes->used; k++)
{
apbuf->used = apbaselen;
buffer_append_string(apbuf, ((data_string*) p->conf.suffixes->data[k])->value->ptr);
if (stat(apbuf->ptr, &st) == 0)
{
// Match!
buffer_append_string(apbuf, con->physical.path->ptr + i);
buffer_reset(con->physical.path);
buffer_copy_string(con->physical.path, apbuf->ptr);
return HANDLER_GO_ON;
}
}
break;
}
srv->tmp_buf->ptr[i] = '/';
}
return HANDLER_GO_ON;
}

/* this function is called at dlopen() time and inits the callbacks */

int mod_autoext_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = buffer_init_string("autoext");

p->init = mod_autoext_init;
p->handle_physical = mod_autoext_handle_physical;
p->set_defaults = mod_autoext_set_defaults;
p->cleanup = mod_autoext_free;

p->data = NULL;

return 0;
}
    (1-1/1)