mirror of https://github.com/BOINC/boinc.git
212 lines
6.4 KiB
C++
212 lines
6.4 KiB
C++
// This file is part of BOINC.
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// http://boinc.berkeley.edu
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// Copyright (C) 2008 University of California
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//
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// BOINC is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License
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// as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// BOINC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
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// HTTP_OP represents an HTTP operation.
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// There are variants for GET and POST,
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// and for the data source/sink (see below).
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// We use libcurl: http://curl.haxx.se/libcurl
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#ifndef _HTTP_CURL_
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#define _HTTP_CURL_
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#include <curl/curl.h>
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#include "network.h"
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#include "proxy_info.h"
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extern int curl_init();
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extern int curl_cleanup();
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#define HTTP_OP_NONE 0
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#define HTTP_OP_GET 1
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// data sink is a file (used for file download)
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#define HTTP_OP_POST 2
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// data source and sink are files (used for scheduler op)
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#define HTTP_OP_POST2 5
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// a POST operation where the request comes from a combination
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// of a string and a file w/offset,
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// and the reply goes into a memory buffer.
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// Used for file upload
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#define HTTP_STATE_IDLE 0
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#define HTTP_STATE_CONNECTING 1
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#define HTTP_STATE_DONE 2
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struct PROJECT;
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class HTTP_OP {
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public:
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HTTP_OP();
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~HTTP_OP();
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PROXY_INFO pi;
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PROJECT* project; // associated project, if any
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char m_url[256];
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char m_curl_ca_bundle_location[256];
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// string needed for ssl support
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char m_curl_user_credentials[128];
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// string needed for proxy username/password
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int content_length;
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unsigned int trace_id;
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char request_header[4096];
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FILE* fileIn;
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FILE* fileOut;
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// output file for POST responses
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CURL* curlEasy;
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// the "easy curl" handle for this net_xfer request
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struct curl_slist *pcurlList;
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// curl slist for http headers
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struct curl_httppost *pcurlFormStart;
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// a pointer to a form item for POST
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struct curl_httppost *pcurlFormEnd;
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// a pointer to a form item for POST
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unsigned char* pByte;
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// pointer to bytes for reading via libcurl_read function
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// request message stuff
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//
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char* req1;
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// if not NULL, send this string first
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char infile[256];
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// then (is nonempty) this file
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double file_offset;
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// starting at this offset
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// reply message stuff
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//
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// reply is always written to a file
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char outfile[256];
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// if specified, it's written to this file w/ optional offset
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// otherwise it's written to a temp file
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// if type POST2, copy output to req1 buffer
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int req1_len;
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// with this limit
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long lSeek;
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// offset within the file or memory buffer we're reading,
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char error_msg[256];
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// put Curl error message here
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bool bTempOutfile;
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// CMC -- flag that outfile is really a tempfile we should delete
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bool bSentHeader;
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// CMC -- a flag that I already sent the header
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CURLcode CurlResult;
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// CMC -- send up curl result code
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bool want_download; // at most one should be true
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bool want_upload;
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long connect_error;
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// errno from connect() (not used for anything)
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long response;
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// HTTP status code from server
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// the above two MUST be long (not int)
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// otherwise breaks on 64-bit machines
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double start_time;
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double bytes_xferred;
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// Uncompressed bytes transferred.
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// In the case of "post2" this includes only the file part
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// In the case of restartable ops (file upload/download)
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// this includes previous count (i.e. file offset)
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double start_bytes_xferred;
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// bytes_xferred at the start of this operation;
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// used to compute transfer speed
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double xfer_speed;
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// tranfer rate based on elapsed time and bytes_xferred
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// (hence doesn't reflect compression; used only for GUI)
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int http_op_state; // values above
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int http_op_type;
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// HTTP_OP_* (see above)
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int http_op_retval;
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// Either:
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// 0
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// ERR_GETHOSTBYNAME (if no such host)
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// ERR_CONNECT (if server down)
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// ERR_HTTP_PERMANENT (if 404 or 416)
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// ERR_HTTP_TRANSIENT (other failures)
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bool is_background;
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// this operation shouldn't trigger a reference-site check
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// and a user alert if it fails.
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// For example: notice RSS feed fetches
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void reset();
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void init(PROJECT*);
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int get_ip_addr(int &ip_addr);
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void close_socket();
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void close_file();
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void update_speed();
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void set_speed_limit(bool is_upload, double bytes_sec);
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void handle_messages(CURLMsg*);
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//int init_head(const char* url);
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int init_get(
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PROJECT*, const char* url, const char* outfile,
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bool del_old_file, double offset, double size
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);
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int init_post(
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PROJECT*, const char* url, const char* infile, const char* outfile
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);
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int init_post2(
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PROJECT*,
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const char* url,
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char* req1, // first part of request. ALSO USED FOR REPLY
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int req1_len,
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const char* infile, double offset // infile is NULL if no file sent
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);
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bool http_op_done();
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void setup_proxy_session(bool no_proxy);
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bool no_proxy_for_url(const char* url);
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bool is_active() {
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return curlEasy!=NULL;
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}
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private:
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// take an init_get/post/post2 and turns it into a libcurl request
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//
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int libcurl_exec(const char* url, const char* in, const char* out,
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double offset, double size, bool is_post
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);
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};
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// represents a set of HTTP requests in progress
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class HTTP_OP_SET {
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std::vector<HTTP_OP*> http_ops;
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public:
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HTTP_OP_SET();
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void insert(HTTP_OP*);
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int remove(HTTP_OP*);
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int nops();
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double bytes_up, bytes_down;
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// total bytes transferred
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void get_fdset(FDSET_GROUP&);
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void got_select(FDSET_GROUP&, double);
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HTTP_OP* lookup_curl(CURL* pcurl);
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// lookup by easycurl handle
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void cleanup_temp_files();
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};
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extern char* get_user_agent_string();
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#endif //__HTTP_CURL_
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