Ano-sys
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
#pragma once
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#include <stdlib.h>
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#include <sys/types.h>
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#include "util.h"
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#define HTTP_MAX_SIZE 8192
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#define HTTP_MAX_HEADERS 40
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/**
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* Simple string tuple representing a HTTP header
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*/
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struct header {
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string key;
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string value;
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};
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/**
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* Representation of a HTTP request
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*/
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struct request {
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string method;
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string uri;
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struct header headers[HTTP_MAX_HEADERS];
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char *payload;
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ssize_t payload_length;
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};
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/**
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* The state of an ongoing HTTP connection
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*
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* `sock`: the socket connected to the client
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* `buffer`: buffer for the raw received data
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* `end`: end of unprocessed data in `buffer`
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* `current_request`: current, complete request, not yet answered to. Reuses
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* memory of `buffer`.
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*/
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struct connection_state {
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int sock;
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char buffer[HTTP_MAX_SIZE];
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char *end;
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struct request current_request;
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};
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/**
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* Parse HTTP request into the given structure.
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*
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* When a full request is read, `request` is populated with its corresponding
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* values, utilizing the existing memory in `buffer`, and the number of bytes
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* read is returned. Otherwise, `buffer` remains unchanged, and zero is
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* returned.
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*/
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ssize_t parse_request(char *buffer, size_t n, struct request *request);
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/**
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* Get value of header in request if set, or NULL.
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*/
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string get_header(const struct request *request, const string name);
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