1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
* This file is part of PowerDNS or weakforced.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 3 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include <map>
#include <string>
#include <sstream>
#include <vector>
#include <memory>
#include <curl/curlver.h>
#include <stdint.h>
#if defined(LIBCURL_VERSION_NUM) && LIBCURL_VERSION_NUM >= 0x073200
/* we need this so that 'CURL' is not typedef'd to void,
which prevents us from wrapping it in a unique_ptr.
Wrapping in a shared_ptr is fine because of type erasure,
but it is a bit wasteful. */
#define CURL_STRICTER 1
#endif
#include <curl/curl.h>
// turns out 'CURL' is currently typedef for void which means we can't easily forward declare it
using MiniCurlHeaders = std::map<std::string, std::string>;
class MiniCurl
{
public:
MiniCurl();
virtual ~MiniCurl();
MiniCurl& operator=(const MiniCurl&) = delete;
MiniCurl& operator=(const MiniCurl&&) = delete;
void setURLData(const std::string& url, const MiniCurlHeaders& headers);
std::string getURL(const std::string& url, const MiniCurlHeaders& headers);
template <class T> void setCurlOption(int option, T optval) {
if (d_curl) {
#ifdef CURL_STRICTER
(void) curl_easy_setopt(d_curl.get(), static_cast<CURLoption>(option), optval);
#else
(void) curl_easy_setopt(d_curl, static_cast<CURLoption>(option), optval);
#endif
}
}
virtual void setTimeout(uint64_t timeout_secs);
void setPostData(const std::string& url, const std::string& post_body,
const MiniCurlHeaders& headers);
std::string getPostResult() { return d_data; }
bool postURL(const std::string& url, const std::string& post_body,
const MiniCurlHeaders& headers,
std::string& error_msg);
// This version returns the POST result in post_res
bool postURL(const std::string& url, const std::string& post_body,
const MiniCurlHeaders& headers,
std::string& post_res,
std::string& error_msg);
CURL* getCurlHandle();
unsigned int getID() { return d_id; }
std::string getErrorMsg() { return std::string(d_error_buf); }
void setID(unsigned int id) { d_id = id; }
protected:
void setCurlOpts();
void setCurlHeaders(const MiniCurlHeaders& headers);
void clearCurlHeaders();
bool initCurlGlobal();
bool is2xx(const int& code) const { return code/100 == 2; }
private:
#ifdef CURL_STRICTER
std::unique_ptr<CURL, decltype(&curl_easy_cleanup)> d_curl{nullptr, curl_easy_cleanup};
std::unique_ptr<struct curl_slist, decltype(&curl_slist_free_all)> d_header_list{nullptr, curl_slist_free_all};
#else
CURL *d_curl{};
struct curl_slist* d_header_list{};
#endif
static size_t write_callback(char *ptr, size_t size, size_t nmemb, void *userdata);
static size_t read_callback(char *buffer, size_t size, size_t nitems, void *userdata);
std::string d_data;
std::istringstream d_post_body;
char d_error_buf[CURL_ERROR_SIZE];
unsigned int d_id;
};
const unsigned int numMultiCurlConnections=10;
struct mcmPostReturn {
unsigned int id;
bool ret;
std::string result_data;
std::string error_msg;
};
class MiniCurlMulti : public MiniCurl
{
public:
MiniCurlMulti();
MiniCurlMulti(size_t num_connections);
~MiniCurlMulti();
unsigned int getNumConnections() { return d_ccs.size(); }
bool addPost(unsigned id, const std::string& url,
const std::string& post_body,
const MiniCurlHeaders& headers);
const std::vector<mcmPostReturn> runPost();
void setTimeout(uint64_t timeout_secs);
template <class T> void setMCurlOption(int option, T optval) {
setCurlOption(option, optval);
for (auto& i : d_ccs) {
i.setCurlOption(option, optval);
}
}
protected:
void initMCurl();
void finishPost();
std::vector<MiniCurl>::iterator findMiniCurl(CURL *curl)
{
for (auto i = d_ccs.begin(); i != d_ccs.end(); ++i)
if (i->getCurlHandle() == curl)
return i;
return d_ccs.end();
}
private:
std::vector<MiniCurl>::iterator d_current;
std::vector<MiniCurl> d_ccs;
#ifdef CURL_STRICTER
std::unique_ptr<CURLM, decltype(&curl_multi_cleanup)> d_mcurl{nullptr, curl_multi_cleanup};
#else
CURLM* d_mcurl = nullptr;
#endif
};
struct curlTLSOptions {
bool verifyPeer = true;
bool verifyHost = true;
std::string caCertBundleFile;
std::string clientCertFile;
std::string clientKeyFile;
};
|
