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93 lines
2.9 KiB
93 lines
2.9 KiB
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#ifndef SFRT_LIBUV_CALLBACKS_H
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#define SFRT_LIBUV_CALLBACKS_H
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#include <assert.h>
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#include <runtime.h>
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#include <sandbox.h>
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#include <sys/mman.h>
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#include <pthread.h>
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#include <signal.h>
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#include <uv.h>
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#include <http_request.h>
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/**
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* TODO: is there some weird edge case where a UNICODE character might be split between reads? Do we care?
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* Called after libuv has read a chunk of data
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* Parses data read by the libuv stream chunk-by-chunk until the message is complete
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* Then stops the stream and wakes up the sandbox
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* @param stream
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* @param number_read bytes read
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* @param buffer unused
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**/
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static inline void
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libuv_callbacks__on_read_parse_http_request(uv_stream_t *stream, ssize_t number_read, const uv_buf_t *buffer)
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{
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struct sandbox *sandbox = stream->data;
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// Parse the chunks libuv has read on our behalf until we've parse to message end
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if (number_read > 0) {
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if (sandbox__parse_http_request(sandbox, number_read) != 0) return;
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sandbox->request_response_data_length += number_read;
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struct http_request *rh = &sandbox->http_request;
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if (!rh->message_end) return;
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}
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// When the entire message has been read, stop the stream and wakeup the sandbox
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uv_read_stop(stream);
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worker_thread__wakeup_sandbox(sandbox);
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}
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/**
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* On libuv close, executes this callback to wake the blocked sandbox back up
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* @param stream
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**/
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static inline void
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libuv_callbacks__on_close_wakeup_sakebox(uv_handle_t *stream)
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{
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struct sandbox *sandbox = stream->data;
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worker_thread__wakeup_sandbox(sandbox);
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}
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/**
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* On libuv shutdown, executes this callback to wake the blocked sandbox back up
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* @param req shutdown request
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* @param status unused in callback
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**/
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static inline void
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libuv_callbacks__on_shutdown_wakeup_sakebox(uv_shutdown_t *req, int status)
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{
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struct sandbox *sandbox = req->data;
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worker_thread__wakeup_sandbox(sandbox);
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}
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/**
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* On libuv write, executes this callback to wake the blocked sandbox back up
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* In case of error, shutdown the sandbox
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* @param write shutdown request
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* @param status status code
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**/
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static inline void
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libuv_callbacks__on_write_wakeup_sandbox(uv_write_t *write, int status)
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{
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struct sandbox *sandbox = write->data;
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if (status < 0) {
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sandbox->client_libuv_shutdown_request.data = sandbox;
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uv_shutdown(&sandbox->client_libuv_shutdown_request, (uv_stream_t *)&sandbox->client_libuv_stream,
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libuv_callbacks__on_shutdown_wakeup_sakebox);
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return;
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}
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worker_thread__wakeup_sandbox(sandbox);
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}
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static inline void
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libuv_callbacks__on_allocate_setup_request_response_data(uv_handle_t *h, size_t suggested, uv_buf_t *buf)
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{
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struct sandbox *sandbox = h->data;
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size_t l = (sandbox->module->max_request_or_response_size - sandbox->request_response_data_length);
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buf->base = (sandbox->request_response_data + sandbox->request_response_data_length);
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buf->len = l > suggested ? suggested : l;
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}
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#endif /* SFRT_SANDBOX_H */
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