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cpl_aws.h
1 /**********************************************************************
2 * $Id: cpl_aws.h 37174 2017-01-18 20:00:36Z rouault $
3 *
4 * Name: cpl_aws.h
5 * Project: CPL - Common Portability Library
6 * Purpose: Amazon Web Services routines
7 * Author: Even Rouault <even.rouault at spatialys.com>
8 *
9 **********************************************************************
10 * Copyright (c) 2015, Even Rouault <even.rouault at spatialys.com>
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be included
20 * in all copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
23 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
28 * DEALINGS IN THE SOFTWARE.
29 ****************************************************************************/
30
31 #ifndef CPL_AWS_INCLUDED_H
32 #define CPL_AWS_INCLUDED_H
33
34 #ifndef DOXYGEN_SKIP
35
36 #include <cstddef>
37
38 #include "cpl_string.h"
39
40 CPLString CPLGetAWS_SIGN4_Authorization(const CPLString& osSecretAccessKey,
41 const CPLString& osAccessKeyId,
42 const CPLString& osAccessToken,
43 const CPLString& osAWSRegion,
44 const CPLString& osRequestPayer,
45 const CPLString& osService,
46 const CPLString& osVerb,
47 const CPLString& osHost,
48 const CPLString& osCanonicalURI,
49 const CPLString& osCanonicalQueryString,
50 const CPLString& osXAMZContentSHA256,
51 const CPLString& osTimestamp);
52
53 CPLString CPLGetLowerCaseHexSHA256( const void *pabyData, size_t nBytes );
54 CPLString CPLGetLowerCaseHexSHA256( const CPLString& osStr );
55
56 CPLString CPLGetAWS_SIGN4_Timestamp();
57
58 CPLString CPLAWSURLEncode(const CPLString& osURL, bool bEncodeSlash = true);
59
60 #ifdef HAVE_CURL
61
62 #include <curl/curl.h>
63 #include <map>
64
65 class VSIS3HandleHelper
66 {
67 CPLString m_osURL;
68 CPLString m_osSecretAccessKey;
69 CPLString m_osAccessKeyId;
70 CPLString m_osSessionToken;
71 CPLString m_osAWSS3Endpoint;
72 CPLString m_osAWSRegion;
73 CPLString m_osRequestPayer;
74 CPLString m_osBucket;
75 CPLString m_osObjectKey;
76 bool m_bUseHTTPS;
77 bool m_bUseVirtualHosting;
78 std::map<CPLString, CPLString> m_oMapQueryParameters;
79
80 static bool GetBucketAndObjectKey(const char* pszURI, const char* pszFSPrefix,
81 bool bAllowNoObject,
82 CPLString &osBucketOut, CPLString &osObjectKeyOut);
83 void RebuildURL();
84
85 protected:
86
87 public:
88 VSIS3HandleHelper(const CPLString& osSecretAccessKey,
89 const CPLString& osAccessKeyId,
90 const CPLString& osSessionToken,
91 const CPLString& osAWSS3Endpoint,
92 const CPLString& osAWSRegion,
93 const CPLString& osRequestPayer,
94 const CPLString& osBucket,
95 const CPLString& osObjectKey,
96 bool bUseHTTPS, bool bUseVirtualHosting);
97 ~VSIS3HandleHelper();
98
99 static VSIS3HandleHelper* BuildFromURI(const char* pszURI, const char* pszFSPrefix,
100 bool bAllowNoObject);
101 static CPLString BuildURL(const CPLString& osAWSS3Endpoint,
102 const CPLString& osBucket,
103 const CPLString& osObjectKey,
104 bool bUseHTTPS, bool bUseVirtualHosting);
105
106 void ResetQueryParameters();
107 void AddQueryParameter(const CPLString& osKey, const CPLString& osValue);
108 struct curl_slist* GetCurlHeaders(const CPLString& osVerb,
109 const void *pabyDataContent = NULL,
110 size_t nBytesContent = 0);
111 bool CanRestartOnError(const char* pszErrorMsg) { return CanRestartOnError(pszErrorMsg, false); }
112 bool CanRestartOnError(const char*, bool bSetError);
113
114 const CPLString& GetURL() const { return m_osURL; }
115 const CPLString& GetBucket() const { return m_osBucket; }
116 const CPLString& GetObjectKey() const { return m_osObjectKey; }
117 const CPLString& GetAWSS3Endpoint()const { return m_osAWSS3Endpoint; }
118 const CPLString& GetAWSRegion() const { return m_osAWSRegion; }
119 const CPLString& GetRequestPayer() const { return m_osRequestPayer; }
120 bool GetVirtualHosting() const { return m_bUseVirtualHosting; }
121 void SetAWSS3Endpoint(const CPLString &osStr);
122 void SetAWSRegion(const CPLString &osStr);
123 void SetRequestPayer(const CPLString &osStr);
124 void SetVirtualHosting(bool b);
125 void SetObjectKey(const CPLString &osStr);
126 };
127
128 class VSIS3UpdateParams
129 {
130 public:
131 CPLString m_osAWSRegion;
132 CPLString m_osAWSS3Endpoint;
133 CPLString m_osRequestPayer;
134 bool m_bUseVirtualHosting;
135
136 VSIS3UpdateParams(const CPLString& osAWSRegion = "",
137 const CPLString& osAWSS3Endpoint = "",
138 const CPLString& osRequestPayer = "",
139 bool bUseVirtualHosting = false) :
140 m_osAWSRegion(osAWSRegion),
141 m_osAWSS3Endpoint(osAWSS3Endpoint),
142 m_osRequestPayer(osRequestPayer),
143 m_bUseVirtualHosting(bUseVirtualHosting) {}
144 };
145
146 #endif /* HAVE_CURL */
147
148 #endif /* #ifndef DOXYGEN_SKIP */
149
150 #endif /* CPL_AWS_INCLUDED_H */
CPLString
Convenient string class based on std::string.
Definition: cpl_string.h:338
cpl_string.h
Various convenience functions for working with strings and string lists.

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