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#include "base.h"
#include "log.h"
#include "buffer.h"
#include "plugin.h"
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
/**
* this is a skeleton for a lighttpd plugin
*
* just replaces every occurance of 'skeleton' by your plugin name
*
* e.g. in vim:
*
* :%s/skeleton/myhandler/
*
*/
/* plugin config for all request/connections */
typedef struct {
array *match;
} plugin_config;
typedef struct {
PLUGIN_DATA;
buffer *match_buf;
plugin_config **config_storage;
plugin_config conf;
} plugin_data;
typedef struct {
size_t foo;
} handler_ctx;
static handler_ctx * handler_ctx_init() {
handler_ctx * hctx;
hctx = calloc(1, sizeof(*hctx));
return hctx;
}
static void handler_ctx_free(handler_ctx *hctx) {
free(hctx);
}
/* init the plugin data */
INIT_FUNC(mod_skeleton_init) {
plugin_data *p;
p = calloc(1, sizeof(*p));
p->match_buf = buffer_init();
return p;
}
/* detroy the plugin data */
FREE_FUNC(mod_skeleton_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->match);
free(s);
}
free(p->config_storage);
}
buffer_free(p->match_buf);
free(p);
return HANDLER_GO_ON;
}
/* handle plugin config and check values */
SETDEFAULTS_FUNC(mod_skeleton_set_defaults) {
plugin_data *p = p_d;
size_t i = 0;
config_values_t cv[] = {
{ "skeleton.array", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
{ 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->match = array_init();
cv[0].destination = s->match;
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_skeleton_patch_connection(server *srv, connection *con, plugin_data *p) {
size_t i, j;
plugin_config *s = p->config_storage[0];
PATCH(match);
/* 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("skeleton.array"))) {
PATCH(match);
}
}
}
return 0;
}
#undef PATCH
URIHANDLER_FUNC(mod_skeleton_uri_handler) {
plugin_data *p = p_d;
int s_len;
size_t k, i;
UNUSED(srv);
if (con->mode != DIRECT) return HANDLER_GO_ON;
if (con->uri.path->used == 0) return HANDLER_GO_ON;
mod_skeleton_patch_connection(srv, con, p);
s_len = con->uri.path->used - 1;
for (k = 0; k < p->conf.match->used; k++) {
data_string *ds = (data_string *)p->conf.match->data[k];
int ct_len = ds->value->used - 1;
if (ct_len > s_len) continue;
if (ds->value->used == 0) continue;
if (0 == strncmp(con->uri.path->ptr + s_len - ct_len, ds->value->ptr, ct_len)) {
con->http_status = 403;
return HANDLER_FINISHED;
}
}
/* not found */
return HANDLER_GO_ON;
}
/* this function is called at dlopen() time and inits the callbacks */
int mod_skeleton_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = buffer_init_string("skeleton");
p->init = mod_skeleton_init;
p->handle_uri_clean = mod_skeleton_uri_handler;
p->set_defaults = mod_skeleton_set_defaults;
p->cleanup = mod_skeleton_free;
p->data = NULL;
return 0;
}
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