source: azure_iot_hub_f767zi/trunk/azure_iot_sdk/c-utility/src/httpapiexsas.c@ 464

Last change on this file since 464 was 464, checked in by coas-nagasima, 3 years ago

WolfSSLとAzure IoT SDKを更新
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1// Copyright (c) Microsoft. All rights reserved.
2// Licensed under the MIT license. See LICENSE file in the project root for full license information.
3
4#include <stdlib.h>
5#include <time.h>
6#include "azure_c_shared_utility/gballoc.h"
7#include "azure_c_shared_utility/agenttime.h"
8#include "azure_c_shared_utility/strings.h"
9#include "azure_c_shared_utility/buffer_.h"
10#include "azure_c_shared_utility/sastoken.h"
11#include "azure_c_shared_utility/httpheaders.h"
12#include "azure_c_shared_utility/httpapiex.h"
13#include "azure_c_shared_utility/httpapiexsas.h"
14#include "azure_c_shared_utility/xlogging.h"
15#include "azure_c_shared_utility/crt_abstractions.h"
16
17#define SHARED_ACCESS_SIGNATURE_PREFIX "sas="
18
19typedef struct HTTPAPIEX_SAS_STATE_TAG
20{
21 char* key;
22 char* uriResource;
23 char* keyName;
24} HTTPAPIEX_SAS_STATE;
25
26static HTTPAPIEX_SAS_STATE* construct_httpex_sas(const char* key, const char* uriResource, const char* keyName)
27{
28 HTTPAPIEX_SAS_STATE* result;
29
30 result = (HTTPAPIEX_SAS_STATE*)malloc(sizeof(HTTPAPIEX_SAS_STATE));
31 if (result == NULL)
32 {
33 LogError("Failure allocating HTTPAPIEX_SAS_Create.");
34 }
35 else
36 {
37 (void)memset(result, 0, sizeof(HTTPAPIEX_SAS_STATE));
38 if (mallocAndStrcpy_s(&result->key, key) != 0)
39 {
40 /*Codes_SRS_HTTPAPIEXSAS_06_004: [If there are any other errors in the instantiation of this handle then HTTPAPIEX_SAS_Create shall return NULL.]*/
41 LogError("Failure allocating sas key.");
42 HTTPAPIEX_SAS_Destroy(result);
43 result = NULL;
44 }
45 else if (mallocAndStrcpy_s(&result->uriResource, uriResource) != 0)
46 {
47 /*Codes_SRS_HTTPAPIEXSAS_06_004: [If there are any other errors in the instantiation of this handle then HTTPAPIEX_SAS_Create shall return NULL.]*/
48 LogError("Failure allocating sas uriResource.");
49 HTTPAPIEX_SAS_Destroy(result);
50 result = NULL;
51 }
52 else if (keyName != NULL && mallocAndStrcpy_s(&result->keyName, keyName) != 0)
53 {
54 /*Codes_SRS_HTTPAPIEXSAS_06_004: [If there are any other errors in the instantiation of this handle then HTTPAPIEX_SAS_Create shall return NULL.]*/
55 LogError("Failure allocating sas keyName.");
56 HTTPAPIEX_SAS_Destroy(result);
57 result = NULL;
58 }
59 }
60 return result;
61}
62
63HTTPAPIEX_SAS_HANDLE HTTPAPIEX_SAS_Create_From_String(const char* key, const char* uriResource, const char* keyName)
64{
65 HTTPAPIEX_SAS_HANDLE result = NULL;
66 if (key == NULL || uriResource == NULL)
67 {
68 /* Codes_SRS_HTTPAPIEXSAS_07_001: [ If the parameter key or uriResource is NULL then HTTPAPIEX_SAS_Create_From_String shall return NULL. ] */
69 LogError("Invalid parameter key: %p, uriResource: %p", key, uriResource);
70 result = NULL;
71 }
72 else
73 {
74 /* Codes_SRS_HTTPAPIEXSAS_07_002: [ If there are any other errors in the instantiation of this handle then HTTPAPIEX_SAS_Create_From_String shall return NULL. ] */
75 result = construct_httpex_sas(key, uriResource, keyName);
76 }
77 /* Codes_SRS_HTTPAPIEXSAS_07_003: [ HTTPAPIEX_SAS_Create_From_String shall create a new instance of HTTPAPIEX_SAS and return a non-NULL handle to it ] */
78 return result;
79}
80
81HTTPAPIEX_SAS_HANDLE HTTPAPIEX_SAS_Create(STRING_HANDLE key, STRING_HANDLE uriResource, STRING_HANDLE keyName)
82{
83 HTTPAPIEX_SAS_HANDLE result = NULL;
84 if (key == NULL)
85 {
86 /*Codes_SRS_HTTPAPIEXSAS_06_001: [If the parameter key is NULL then HTTPAPIEX_SAS_Create shall return NULL.]*/
87 LogError("No key passed to HTTPAPIEX_SAS_Create.");
88 }
89 else if (uriResource == NULL)
90 {
91 /*Codes_SRS_HTTPAPIEXSAS_06_002: [If the parameter uriResource is NULL then HTTPAPIEX_SAS_Create shall return NULL.]*/
92 LogError("No uri resource passed to HTTPAPIEX_SAS_Create.");
93 }
94 else
95 {
96 /*Codes_SRS_HTTPAPIEXSAS_06_003: [The parameter keyName for HTTPAPIEX_SAS_Create is optional and can be NULL.]*/
97 /*Codes_SRS_HTTPAPIEXSAS_01_001: [ HTTPAPIEX_SAS_Create shall create a new instance of HTTPAPIEX_SAS and return a non-NULL handle to it. ]*/
98 const char* keyStr = STRING_c_str(key);
99 const char* uriStr = STRING_c_str(uriResource);
100 const char* keyNameStr = STRING_c_str(keyName);
101 result = construct_httpex_sas(keyStr, uriStr, keyNameStr);
102 }
103 return result;
104}
105
106void HTTPAPIEX_SAS_Destroy(HTTPAPIEX_SAS_HANDLE handle)
107{
108 /*Codes_SRS_HTTPAPIEXSAS_06_005: [If the parameter handle is NULL then HTTAPIEX_SAS_Destroy shall do nothing and return.]*/
109 HTTPAPIEX_SAS_STATE* state = (HTTPAPIEX_SAS_STATE*)handle;
110 if (state)
111 {
112 /*Codes_SRS_HTTPAPIEXSAS_06_006: [HTTAPIEX_SAS_Destroy shall deallocate any structures denoted by the parameter handle.]*/
113 if (state->key)
114 {
115 free(state->key);
116 }
117 if (state->uriResource)
118 {
119 free(state->uriResource);
120 }
121 if (state->keyName)
122 {
123 free(state->keyName);
124 }
125 free(state);
126 }
127}
128
129HTTPAPIEX_RESULT HTTPAPIEX_SAS_ExecuteRequest(HTTPAPIEX_SAS_HANDLE sasHandle, HTTPAPIEX_HANDLE handle, HTTPAPI_REQUEST_TYPE requestType, const char* relativePath, HTTP_HEADERS_HANDLE requestHttpHeadersHandle, BUFFER_HANDLE requestContent, unsigned int* statusCode, HTTP_HEADERS_HANDLE responseHeadersHandle, BUFFER_HANDLE responseContent)
130{
131 /*Codes_SRS_HTTPAPIEXSAS_06_007: [If the parameter sasHandle is NULL then HTTPAPIEX_SAS_ExecuteRequest shall simply invoke HTTPAPIEX_ExecuteRequest with the remaining parameters (following sasHandle) as its arguments and shall return immediately with the result of that call as the result of HTTPAPIEX_SAS_ExecuteRequest.]*/
132 if (sasHandle != NULL)
133 {
134 /*Codes_SRS_HTTPAPIEXSAS_06_008: [if the parameter requestHttpHeadersHandle is NULL then fallthrough.]*/
135 if (requestHttpHeadersHandle != NULL)
136 {
137 /*Codes_SRS_HTTPAPIEXSAS_06_009: [HTTPHeaders_FindHeaderValue shall be invoked with the requestHttpHeadersHandle as its first argument and the string "Authorization" as its second argument.]*/
138 /*Codes_SRS_HTTPAPIEXSAS_06_010: [If the return result of the invocation of HTTPHeaders_FindHeaderValue is NULL then fallthrough.]*/
139 if (HTTPHeaders_FindHeaderValue(requestHttpHeadersHandle, "Authorization") != NULL)
140 {
141 HTTPAPIEX_SAS_STATE* state = (HTTPAPIEX_SAS_STATE*)sasHandle;
142 /*Codes_SRS_HTTPAPIEXSAS_06_018: [A value of type time_t that shall be known as currentTime is obtained from calling get_time.]*/
143 time_t currentTime = get_time(NULL);
144 /*Codes_SRS_HTTPAPIEXSAS_06_019: [If the value of currentTime is (time_t)-1 is then fallthrough.]*/
145 if (currentTime == (time_t)-1)
146 {
147 LogError("Time does not appear to be working.");
148 }
149 else
150 {
151 STRING_HANDLE newSASToken = NULL;
152 if (strncmp(state->key, SHARED_ACCESS_SIGNATURE_PREFIX, 4) == 0)
153 {
154 /*Codes_SRS_HTTPAPIEXSAS_06_017: [If state->key is prefixed with "sas=", SharedAccessSignature will be used rather than created. STRING_construct will be invoked.]*/
155 newSASToken = STRING_construct(&state->key[4]);
156 }
157 else
158 {
159 /*Codes_SRS_HTTPAPIEXSAS_06_011: [SASToken_Create shall be invoked.]*/
160 /*Codes_SRS_HTTPAPIEXSAS_06_012: [If the return result of SASToken_Create is NULL then fallthrough.]*/
161 uint64_t expiry = (uint64_t)(difftime(currentTime, 0) + 3600);
162 newSASToken = SASToken_CreateString(state->key, state->uriResource, state->keyName, expiry);
163 }
164
165 if (newSASToken != NULL)
166 {
167 /*Codes_SRS_HTTPAPIEXSAS_06_013: [HTTPHeaders_ReplaceHeaderNameValuePair shall be invoked with "Authorization" as its second argument and STRING_c_str (newSASToken) as its third argument.]*/
168 if (HTTPHeaders_ReplaceHeaderNameValuePair(requestHttpHeadersHandle, "Authorization", STRING_c_str(newSASToken)) != HTTP_HEADERS_OK)
169 {
170 /*Codes_SRS_HTTPAPIEXSAS_06_014: [If the result of the invocation of HTTPHeaders_ReplaceHeaderNameValuePair is NOT HTTP_HEADERS_OK then fallthrough.]*/
171 LogError("Unable to replace the old SAS Token.");
172 }
173 /*Codes_SRS_HTTPAPIEXSAS_06_015: [STRING_delete(newSASToken) will be invoked.]*/
174 STRING_delete(newSASToken);
175 }
176 else
177 {
178 LogError("Unable to create a new SAS token.");
179 }
180 }
181 }
182 }
183 }
184 /*Codes_SRS_HTTPAPIEXSAS_06_016: [HTTPAPIEX_ExecuteRequest with the remaining parameters (following sasHandle) as its arguments will be invoked and the result of that call is the result of HTTPAPIEX_SAS_ExecuteRequest.]*/
185 return HTTPAPIEX_ExecuteRequest(handle,requestType,relativePath,requestHttpHeadersHandle,requestContent,statusCode,responseHeadersHandle,responseContent);
186}
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