boinc/client/http_curl.h

181 lines
5.9 KiB
C++

// Berkeley Open Infrastructure for Network Computing
// http://boinc.berkeley.edu
// Copyright (C) 2005 University of California
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// either version 2.1 of the License, or (at your option) any later version.
//
// This software is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// To view the GNU Lesser General Public License visit
// http://www.gnu.org/copyleft/lesser.html
// or write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// HTTP_OP represents an HTTP operation.
// There are variants for GET and POST,
// and for the data source/sink (see below).
// We use libcurl: http://curl.haxx.se/libcurl
#ifndef _HTTP_
#define _HTTP_
// SOCKS #defines
#define SOCKS_VERSION_4 0x04
#define SOCKS_VERSION_5 0x05
#include <curl/curl.h>
#include "network.h"
#include "proxy_info.h"
extern int curl_init();
extern int curl_cleanup();
// official HTTP status codes
#define HTTP_STATUS_CONTINUE 100
#define HTTP_STATUS_OK 200
#define HTTP_STATUS_PARTIAL_CONTENT 206
#define HTTP_STATUS_MOVED_PERM 301
#define HTTP_STATUS_MOVED_TEMP 302
#define HTTP_STATUS_NOT_FOUND 404
#define HTTP_STATUS_PROXY_AUTH_REQ 407
#define HTTP_STATUS_RANGE_REQUEST_ERROR 416
#define HTTP_STATUS_INTERNAL_SERVER_ERROR 500
#define HTTP_STATUS_SERVICE_UNAVAILABLE 503
#define HTTP_OP_NONE 0
#define HTTP_OP_GET 1
// data sink is a file (used for file download)
#define HTTP_OP_POST 2
// data source and sink are files (used for scheduler op)
#define HTTP_OP_HEAD 4
// no data (used for file upload)
#define HTTP_OP_POST2 5
// a POST operation where the request comes from a combination
// of a string and a file w/offset,
// and the reply goes into a memory buffer.
// Used for file upload
#define HTTP_STATE_IDLE 0
#define HTTP_STATE_CONNECTING 1
#define HTTP_STATE_DONE 2
class HTTP_OP {
public:
HTTP_OP();
~HTTP_OP();
PROXY_INFO pi;
char m_url[256];
char szCurlProxyUserPwd[128]; // string needed for proxy username/password
int content_length;
double file_offset;
int trace_id;
char request_header[4096];
FILE* fileIn;
FILE* fileOut; // CMC need an output file for POST responses
CURL* curlEasy; // the "easy curl" handle for this net_xfer request
struct curl_slist *pcurlList; // curl slist for http headers
struct curl_httppost *pcurlFormStart; // a pointer to a form item for POST
struct curl_httppost *pcurlFormEnd; // a pointer to a form item for POST
unsigned char* pByte; // pointer to bytes for reading via libcurl_read function
long lSeek; // this is a pointer within the file we're reading
char infile[PATH_MAX];
char outfile[PATH_MAX];
char error_msg[256]; // put Curl error message here
bool bTempOutfile; // CMC -- flag that outfile is really a tempfile we should delete
char* req1;
bool bSentHeader; // CMC -- a flag that I already sent the header
CURLcode CurlResult; // CMC -- send up curl result code
bool want_download; // at most one should be true
bool want_upload;
int error;
int response;
double start_time;
double xfer_speed;
double bytes_xferred; // bytes transferred in this session
int http_op_state; // values above
int http_op_type;
int http_op_retval;
// save authorization types supported by proxy/socks server
bool auth_flag; // TRUE = server uses authorization
long auth_type; // 0 = haven't contacted server yet.
void reset();
void init();
int get_ip_addr(int &ip_addr);
void close_socket();
void close_file();
void update_speed();
void got_error();
//int init_head(const char* url);
int init_get(const char* url, const char* outfile, bool del_old_file, double offset=0);
int init_post(const char* url, const char* infile, const char* outfile);
int init_post2(
const char* url,
char* req1, // first part of request. ALSO USED FOR REPLY
const char* infile, double offset // infile is NULL if no file sent
);
bool http_op_done();
int set_proxy(PROXY_INFO *new_pi);
void setupProxyCurl();
private:
// internal use in the class -- takes an init_get/post/post2 and turns it into
// an appropriate libcurl request
int libcurl_exec(const char* url, const char* in = NULL, const char* out = NULL,
double offset = 0.0f, bool bPost = true
);
};
// global function used by libcurl to write http replies to disk
size_t libcurl_write(void *ptr, size_t size, size_t nmemb, HTTP_OP* phop);
size_t libcurl_read( void *ptr, size_t size, size_t nmemb, HTTP_OP* phop);
curlioerr libcurl_ioctl(CURL *handle, curliocmd cmd, HTTP_OP* phop);
int libcurl_debugfunction(CURL *handle, curl_infotype type,
unsigned char *data, size_t size, HTTP_OP* phop);
// represents a set of HTTP requests in progress
//
class HTTP_OP_SET {
std::vector<HTTP_OP*> http_ops;
public:
HTTP_OP_SET();
int insert(HTTP_OP*);
int remove(HTTP_OP*);
int nops();
double max_bytes_sec_up, max_bytes_sec_down;
// user-specified limits on throughput
double bytes_left_up, bytes_left_down;
// bytes left to transfer in the current second
double bytes_up, bytes_down;
// total bytes transferred
int last_time;
void get_fdset(FDSET_GROUP&);
void got_select(FDSET_GROUP&, double);
HTTP_OP* lookup_curl(CURL* pcurl); // lookup by easycurl handle
};
extern void parse_url(const char* url, char* host, int &port, char* file);
#endif //__HTTP_H