GDAL

cpl_google_cloud.h
1 /**********************************************************************
2 * Project: CPL - Common Portability Library
3 * Purpose: Google Cloud Storage routines
4 * Author: Even Rouault <even.rouault at spatialys.com>
5 *
6 **********************************************************************
7 * Copyright (c) 2017, Even Rouault <even.rouault at spatialys.com>
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
26 ****************************************************************************/
27
28 #ifndef CPL_GOOGLE_CLOUD_INCLUDED_H
29 #define CPL_GOOGLE_CLOUD_INCLUDED_H
30
31 #ifndef DOXYGEN_SKIP
32
33 #include <cstddef>
34
35 #include "cpl_string.h"
36
37 #ifdef HAVE_CURL
38
39 #include <curl/curl.h>
40 #include "cpl_http.h"
41 #include "cpl_aws.h"
42 #include <map>
43
44 class VSIGSHandleHelper final : public IVSIS3LikeHandleHelper
45 {
46 CPL_DISALLOW_COPY_ASSIGN(VSIGSHandleHelper)
47
48 CPLString m_osURL;
49 CPLString m_osEndpoint;
50 CPLString m_osBucketObjectKey;
51 CPLString m_osSecretAccessKey;
52 CPLString m_osAccessKeyId;
53 bool m_bUseAuthenticationHeader;
54 GOA2Manager m_oManager;
55 std::string m_osUserProject{};
56
57 static bool GetConfiguration(const std::string &osPathForOption,
58 CSLConstList papszOptions,
59 CPLString &osSecretAccessKey,
60 CPLString &osAccessKeyId,
61 bool &bUseAuthenticationHeader,
62 GOA2Manager &oManager);
63
64 static bool GetConfigurationFromConfigFile(CPLString &osSecretAccessKey,
65 CPLString &osAccessKeyId,
66 CPLString &osOAuth2RefreshToken,
67 CPLString &osOAuth2ClientId,
68 CPLString &osOAuth2ClientSecret,
69 CPLString &osCredentials);
70
71 void RebuildURL() override;
72
73 public:
74 VSIGSHandleHelper(const CPLString &osEndpoint,
75 const CPLString &osBucketObjectKey,
76 const CPLString &osSecretAccessKey,
77 const CPLString &osAccessKeyId, bool bUseHeaderFile,
78 const GOA2Manager &oManager,
79 const std::string &osUserProject);
80 ~VSIGSHandleHelper();
81
82 static VSIGSHandleHelper *BuildFromURI(const char *pszURI,
83 const char *pszFSPrefix,
84 CSLConstList papszOptions = nullptr);
85
86 bool UsesHMACKey() const;
87
88 struct curl_slist *
89 GetCurlHeaders(const CPLString &osVerbosVerb,
90 const struct curl_slist *psExistingHeaders,
91 const void *pabyDataContent = nullptr,
92 size_t nBytesContent = 0) const override;
93
94 const CPLString &GetURL() const override
95 {
96 return m_osURL;
97 }
98
99 CPLString GetCopySourceHeader() const override
100 {
101 return "x-goog-copy-source";
102 }
103 const char *GetMetadataDirectiveREPLACE() const override
104 {
105 return "x-goog-metadata-directive: REPLACE";
106 }
107
108 CPLString GetSignedURL(CSLConstList papszOptions);
109
110 static void CleanMutex();
111 static void ClearCache();
112 };
113
114 #endif /* HAVE_CURL */
115
116 #endif /* #ifndef DOXYGEN_SKIP */
117
118 #endif /* CPL_GOOGLE_CLOUD_INCLUDED_H */
GOA2Manager
Manager of Google OAuth2 authentication.
Definition: cpl_http.h:199
CPLString
Convenient string class based on std::string.
Definition: cpl_string.h:311
cpl_http.h
CSLConstList
char ** CSLConstList
Type of a constant null-terminated list of nul terminated strings.
Definition: cpl_port.h:1178
cpl_string.h
CPL_DISALLOW_COPY_ASSIGN
#define CPL_DISALLOW_COPY_ASSIGN(ClassName)
Helper to remove the copy and assignment constructors so that the compiler will not generate the defa...
Definition: cpl_port.h:1042