123 lines
2.5 KiB
C++
123 lines
2.5 KiB
C++
/*
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* \brief HTTP back-end interface
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* \author Sebastian Sumpf <Sebastian.Sumpf@genode-labs.com>
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* \date 2010-08-24
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*/
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/*
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* Copyright (C) 2010-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _HTTP_H_
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#define _HTTP_H_
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#include <base/stdint.h>
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struct addrinfo;
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class Http
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{
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typedef Genode::size_t size_t;
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typedef Genode::addr_t addr_t;
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typedef Genode::off_t off_t;
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private:
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size_t _size; /* number of bytes in file */
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char *_host; /* host name */
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char *_port; /* host port */
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char *_path; /* absolute file path on host */
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char *_http_buf; /* internal data buffer */
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unsigned _http_ret; /* HTTP status code */
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struct addrinfo *_info; /* Resolved address info for host */
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int _fd; /* Socket file handle */
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addr_t _base_addr; /* Address of I/O dataspace */
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/*
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* Send 'HEAD' command
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*/
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void cmd_head();
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/*
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* Connect to host
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*/
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void connect();
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/*
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* Re-connect to host
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*/
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void reconnect();
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/*
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* Set URI of remote file
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*/
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void parse_uri(char *uri);
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/*
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* Resolve host
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*/
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void resolve_uri();
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/*
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* Read HTTP header and parse server-status code
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*/
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size_t read_header();
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/*
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* Determine remote-file size
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*/
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void get_capacity();
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/*
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* Read 'size' bytes into buffer
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*/
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void do_read(void * buf, size_t size);
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public:
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/*
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* Constructor (default host port is 80
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*/
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Http(char *uri);
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/*
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* Destructor
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*/
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~Http();
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/**
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* Read remote file size
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*
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* \return Remote file size in bytes
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*/
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size_t file_size() { return _size; }
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/**
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* Set base address of I/O dataspace
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*
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* \param base_addr Base of dataspace
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*/
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void base_addr(addr_t base_addr) { _base_addr = base_addr; }
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/**
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* Send 'GET' command
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*
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* \param file_offset Read from offset of remote file
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* \param size Number of byts to transfer
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* \param buffer address in I/O dataspace
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*/
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void cmd_get(size_t file_offset, size_t size, addr_t buffer);
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/* Exceptions */
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class Exception : public ::Genode::Exception { };
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class Uri_error : public Exception { };
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class Socket_error : public Exception { };
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class Socket_closed : public Exception { };
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class Server_error : public Exception { };
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};
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#endif /* _HTTP_H_ */
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