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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
/**
* @file llcurl.h
* @author Zero / Donovan
* @date 2006-10-15
* @brief A wrapper around libcurl.
*
* $LicenseInfo:firstyear=2006&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library 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;
* version 2.1 of the License only.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLCURL_H
#define LL_LLCURL_H
#include "linden_common.h"
#include <sstream>
#include <string>
#include <vector>
#include <boost/intrusive_ptr.hpp>
#include <curl/curl.h> // TODO: remove dependency
#include "llbuffer.h"
#include "lliopipe.h"
#include "llsd.h"
class LLMutex;
// For whatever reason, this is not typedef'd in curl.h
typedef size_t (*curl_header_callback)(void *ptr, size_t size, size_t nmemb, void *stream);
class LLCurl
{
LOG_CLASS(LLCurl);
public:
class Easy;
class Multi;
struct TransferInfo
{
TransferInfo() : mSizeDownload(0.0), mTotalTime(0.0), mSpeedDownload(0.0) {}
F64 mSizeDownload;
F64 mTotalTime;
F64 mSpeedDownload;
};
class Responder
{
//LOG_CLASS(Responder);
public:
Responder();
virtual ~Responder();
/**
* @brief return true if the status code indicates success.
*/
static bool isGoodStatus(U32 status)
{
return((200 <= status) && (status < 300));
}
virtual void errorWithContent(
U32 status,
const std::string& reason,
const LLSD& content);
//< called by completed() on bad status
virtual void error(U32 status, const std::string& reason);
//< called by default error(status, reason, content)
virtual void result(const LLSD& content);
//< called by completed for good status codes.
virtual void completedRaw(
U32 status,
const std::string& reason,
const LLChannelDescriptors& channels,
const LLIOPipe::buffer_ptr_t& buffer);
/**< Override point for clients that may want to use this
class when the response is some other format besides LLSD
*/
virtual void completed(
U32 status,
const std::string& reason,
const LLSD& content);
/**< The default implemetnation calls
either:
* result(), or
* error()
*/
// Override to handle parsing of the header only. Note: this is the only place where the contents
// of the header can be parsed. In the ::completed call above only the body is contained in the LLSD.
virtual void completedHeader(U32 status, const std::string& reason, const LLSD& content);
// Used internally to set the url for debugging later.
void setURL(const std::string& url);
virtual bool followRedir()
{
return false;
}
public: /* but not really -- don't touch this */
U32 mReferenceCount;
private:
std::string mURL;
};
typedef boost::intrusive_ptr<Responder> ResponderPtr;
/**
* @ brief Set certificate authority file used to verify HTTPS certs.
*/
static void setCAFile(const std::string& file);
/**
* @ brief Set certificate authority path used to verify HTTPS certs.
*/
static void setCAPath(const std::string& path);
/**
* @ brief Return human-readable string describing libcurl version.
*/
static std::string getVersionString();
/**
* @ brief Get certificate authority file used to verify HTTPS certs.
*/
static const std::string& getCAFile() { return sCAFile; }
/**
* @ brief Get certificate authority path used to verify HTTPS certs.
*/
static const std::string& getCAPath() { return sCAPath; }
/**
* @ brief Initialize LLCurl class
*/
static void initClass();
/**
* @ brief Cleanup LLCurl class
*/
static void cleanupClass();
/**
* @ brief curl error code -> string
*/
static std::string strerror(CURLcode errorcode);
// For OpenSSL callbacks
static std::vector<LLMutex*> sSSLMutex;
// OpenSSL callbacks
static void ssl_locking_callback(int mode, int type, const char *file, int line);
static unsigned long ssl_thread_id(void);
private:
static std::string sCAPath;
static std::string sCAFile;
static const unsigned int MAX_REDIRECTS;
};
namespace boost
{
void intrusive_ptr_add_ref(LLCurl::Responder* p);
void intrusive_ptr_release(LLCurl::Responder* p);
};
class LLCurlRequest
{
public:
typedef std::vector<std::string> headers_t;
LLCurlRequest();
~LLCurlRequest();
void get(const std::string& url, LLCurl::ResponderPtr responder);
bool getByteRange(const std::string& url, const headers_t& headers, S32 offset, S32 length, LLCurl::ResponderPtr responder);
bool post(const std::string& url, const headers_t& headers, const LLSD& data, LLCurl::ResponderPtr responder);
S32 process();
S32 getQueued();
private:
void addMulti();
LLCurl::Easy* allocEasy();
bool addEasy(LLCurl::Easy* easy);
private:
typedef std::set<LLCurl::Multi*> curlmulti_set_t;
curlmulti_set_t mMultiSet;
LLCurl::Multi* mActiveMulti;
S32 mActiveRequestCount;
U32 mThreadID; // debug
};
class LLCurlEasyRequest
{
public:
LLCurlEasyRequest();
~LLCurlEasyRequest();
void setopt(CURLoption option, S32 value);
void setoptString(CURLoption option, const std::string& value);
void setPost(char* postdata, S32 size);
void setHeaderCallback(curl_header_callback callback, void* userdata);
void setWriteCallback(curl_write_callback callback, void* userdata);
void setReadCallback(curl_read_callback callback, void* userdata);
void setSSLCtxCallback(curl_ssl_ctx_callback callback, void* userdata);
void slist_append(const char* str);
void sendRequest(const std::string& url);
void requestComplete();
S32 perform();
bool getResult(CURLcode* result, LLCurl::TransferInfo* info = NULL);
std::string getErrorString();
private:
CURLMsg* info_read(S32* queue, LLCurl::TransferInfo* info);
private:
LLCurl::Multi* mMulti;
LLCurl::Easy* mEasy;
bool mRequestSent;
bool mResultReturned;
};
#endif // LL_LLCURL_H
|
