text: #include "first.h"
  
  #include "base.h"
  #include "log.h"
  #include "buffer.h"
  
  #include "plugin.h"
  
  #include "stat_cache.h"
  #include "etag.h"
  #include "http_chunk.h"
  #include "response.h"
  
  #include <ctype.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  
  /**
   * this is a staticfile for a lighttpd plugin
   *
   */
  
  
  
  /* plugin config for all request/connections */
  
  typedef struct {
  	array *exclude_ext;
  	unsigned short etags_used;
  	unsigned short disable_pathinfo;
  } plugin_config;
  
  typedef struct {
  	PLUGIN_DATA;
  
  	plugin_config **config_storage;
  
  	plugin_config conf;
  } plugin_data;
  
  /* init the plugin data */
  INIT_FUNC(mod_staticfile_init) {
  	plugin_data *p;
  
  	p = calloc(1, sizeof(*p));
  
  	return p;
  }
  
  /* detroy the plugin data */
  FREE_FUNC(mod_staticfile_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->exclude_ext);
  
  			free(s);
  		}
  		free(p->config_storage);
  	}
  
  	free(p);
  
  	return HANDLER_GO_ON;
  }
  
  /* handle plugin config and check values */
  
  SETDEFAULTS_FUNC(mod_staticfile_set_defaults) {
  	plugin_data *p = p_d;
  	size_t i = 0;
  
  	config_values_t cv[] = {
  		{ "static-file.exclude-extensions", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION },       /* 0 */
  		{ "static-file.etags",    NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
  		{ "static-file.disable-pathinfo", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
  		{ 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->exclude_ext    = array_init();
  		s->etags_used     = 1;
  		s->disable_pathinfo = 0;
  
  		cv[0].destination = s->exclude_ext;
  		cv[1].destination = &(s->etags_used);
  		cv[2].destination = &(s->disable_pathinfo);
  
  		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_staticfile_patch_connection(server *srv, connection *con, plugin_data *p) {
  	size_t i, j;
  	plugin_config *s = p->config_storage[0];
  
  	PATCH(exclude_ext);
  	PATCH(etags_used);
  	PATCH(disable_pathinfo);
  
  	/* 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("static-file.exclude-extensions"))) {
  				PATCH(exclude_ext);
  			} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("static-file.etags"))) {
  				PATCH(etags_used);
  			} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("static-file.disable-pathinfo"))) {
  				PATCH(disable_pathinfo);
  			}
  		}
  	}
  
  	return 0;
  }
  #undef PATCH
  
  URIHANDLER_FUNC(mod_staticfile_subrequest) {
  	plugin_data *p = p_d;
  	size_t k;
  	data_string *ds;
  
  	/* someone else has done a decision for us */
  	if (con->http_status != 0) return HANDLER_GO_ON;
  	if (buffer_is_empty(con->uri.path)) return HANDLER_GO_ON;
  	if (buffer_is_empty(con->physical.path)) return HANDLER_GO_ON;
  
  	/* someone else has handled this request */
  	if (con->mode != DIRECT) return HANDLER_GO_ON;
  
  	/* we only handle GET, POST and HEAD */
  	switch(con->request.http_method) {
  	case HTTP_METHOD_GET:
  	case HTTP_METHOD_POST:
  	case HTTP_METHOD_HEAD:
  		break;
  	default:
  		return HANDLER_GO_ON;
  	}
  
  	mod_staticfile_patch_connection(srv, con, p);
  
  	if (p->conf.disable_pathinfo && !buffer_string_is_empty(con->request.pathinfo)) {
  		if (con->conf.log_request_handling) {
  			log_error_write(srv, __FILE__, __LINE__,  "s",  "-- NOT handling file as static file, pathinfo forbidden");
  		}
  		return HANDLER_GO_ON;
  	}
  
  	/* ignore certain extensions */
  	for (k = 0; k < p->conf.exclude_ext->used; k++) {
  		ds = (data_string *)p->conf.exclude_ext->data[k];
  
  		if (buffer_is_empty(ds->value)) continue;
  
  		if (buffer_is_equal_right_len(con->physical.path, ds->value, buffer_string_length(ds->value))) {
  			if (con->conf.log_request_handling) {
  				log_error_write(srv, __FILE__, __LINE__,  "s",  "-- NOT handling file as static file, extension forbidden");
  			}
  			return HANDLER_GO_ON;
  		}
  	}
  
  
  	if (con->conf.log_request_handling) {
  		log_error_write(srv, __FILE__, __LINE__,  "s",  "-- handling file as static file");
  	}
  
  	if (!p->conf.etags_used) con->etag_flags = 0;
  	http_response_send_file(srv, con, con->physical.path);
  
  	return HANDLER_FINISHED;
  }
  
  /* this function is called at dlopen() time and inits the callbacks */
  
  int mod_staticfile_plugin_init(plugin *p);
  int mod_staticfile_plugin_init(plugin *p) {
  	p->version     = LIGHTTPD_VERSION_ID;
  	p->name        = buffer_init_string("staticfile");
  
  	p->init        = mod_staticfile_init;
  	p->handle_subrequest_start = mod_staticfile_subrequest;
  	p->set_defaults  = mod_staticfile_set_defaults;
  	p->cleanup     = mod_staticfile_free;
  
  	p->data        = NULL;
  
  	return 0;
  }
  