text: #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;
  }
  
  /* destroy 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 (NULL == 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(plugin_config *));
  
  	for (i = 0; i < srv->config_context->used; i++) {
  		data_config const* config = (data_config const*)srv->config_context->data[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, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
  			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;
  }
  