128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
#ifndef _LIGHTTPD_VIRTUALREQUEST_H_
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#define _LIGHTTPD_VIRTUALREQUEST_H_
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#ifndef _LIGHTTPD_BASE_H_
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#error Please include <lighttpd/base.h> instead of this file
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#endif
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typedef enum {
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/* waiting for request headers */
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VRS_CLEAN,
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/* all headers received, now handling them, set up input filters
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* this state is set by the previous vrequest after VRS_WROTE_RESPONSE_HEADERS (or the main connection),
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* and the handle_request function is called (which execute the action stack by default)
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*/
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VRS_HANDLE_REQUEST_HEADERS,
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/* request headers handled, input filters ready; now content is accepted
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* this state is set via handle_indirect (handle_direct skips to VRS_HANDLE_RESPONSE_HEADERS
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*/
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VRS_READ_CONTENT,
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/* all response headers written, now set up output filters */
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VRS_HANDLE_RESPONSE_HEADERS,
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/* output filters ready, content can be written */
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VRS_WRITE_CONTENT,
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/* request done */
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/* VRS_END, */
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VRS_ERROR
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} vrequest_state;
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typedef handler_t (*filter_handler)(vrequest *vr, filter *f, plugin *p);
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typedef handler_t (*vrequest_handler)(vrequest *vr);
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typedef handler_t (*vrequest_plugin_handler)(vrequest *vr, plugin *p);
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struct filter {
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chunkqueue *in, *out;
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plugin *p;
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filter_handler handle;
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};
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struct filters {
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GPtrArray *queue;
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chunkqueue *in, *out;
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gboolean pending, waitforevent, waitforfd;
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};
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struct connection;
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struct vrequest {
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struct connection *con;
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option_value *options;
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vrequest_state state;
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vrequest_handler
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handle_request_headers,
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handle_response_headers, handle_response_body,
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handle_response_error; /* this is _not_ for 500 - internal error */
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GPtrArray *plugin_ctx;
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plugin *backend;
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request request;
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physical physical;
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response response;
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/* environment entries will be passed to the backends */
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environment env;
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/* -> vr_in -> filters_in -> in -> handle -> out -> filters_out -> vr_out -> */
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gboolean cq_memory_limit_hit; /* stop feeding chunkqueues with memory chunks */
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filters filters_in, filters_out;
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chunkqueue *vr_in, *vr_out;
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chunkqueue *in, *out;
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action_stack action_stack;
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gboolean actions_wait_for_response;
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GList *job_queue_link;
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};
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#define VREQUEST_WAIT_FOR_RESPONSE_HEADERS(vr) \
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do { \
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if (vr->state == VRS_HANDLE_REQUEST_HEADERS) { \
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VR_ERROR(vr, "%s", "Cannot wait for response headers as no backend handler found - fix your config"); \
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return HANDLER_ERROR; \
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} else if (vr->state < VRS_HANDLE_RESPONSE_HEADERS) { \
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return HANDLER_WAIT_FOR_EVENT; \
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} \
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} while (0)
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LI_API vrequest* vrequest_new(struct connection *con, vrequest_handler handle_response_headers, vrequest_handler handle_response_body, vrequest_handler handle_response_error, vrequest_handler handle_request_headers);
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LI_API void vrequest_free(vrequest *vr);
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LI_API void vrequest_reset(vrequest *vr);
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/* Signals an internal error; handles the error in the _next_ loop */
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LI_API void vrequest_error(vrequest *vr);
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LI_API void vrequest_backend_overloaded(vrequest *vr);
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LI_API void vrequest_backend_dead(vrequest *vr);
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LI_API void vrequest_backend_error(vrequest *vr, backend_error berror);
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/* received all request headers */
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LI_API void vrequest_handle_request_headers(vrequest *vr);
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/* received (partial) request content */
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LI_API void vrequest_handle_request_body(vrequest *vr);
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/* received all response headers/status code - call once from your indirect handler */
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LI_API void vrequest_handle_response_headers(vrequest *vr);
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/* received (partial) response content - call from your indirect handler */
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LI_API void vrequest_handle_response_body(vrequest *vr);
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/* response completely ready */
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LI_API gboolean vrequest_handle_direct(vrequest *vr);
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/* handle request over time */
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LI_API gboolean vrequest_handle_indirect(vrequest *vr, plugin *p);
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LI_API void vrequest_state_machine(vrequest *vr);
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LI_API void vrequest_joblist_append(vrequest *vr);
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LI_API gboolean vrequest_stat(vrequest *vr);
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#endif
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