Azure IoT common library
Dependents: STM32F746_iothub_client_sample_mqtt f767zi_mqtt iothub_client_sample_amqp iothub_client_sample_http ... more
httpapiexsas.c
- Committer:
- AzureIoTClient
- Date:
- 2018-10-04
- Revision:
- 49:6bb8b9a66642
- Parent:
- 38:ed9c888e5e12
File content as of revision 49:6bb8b9a66642:
// Copyright (c) Microsoft. All rights reserved. // Licensed under the MIT license. See LICENSE file in the project root for full license information. #include <stdlib.h> #include "azure_c_shared_utility/gballoc.h" #include <stddef.h> #include <time.h> #include "azure_c_shared_utility/agenttime.h" #include "azure_c_shared_utility/strings.h" #include "azure_c_shared_utility/buffer_.h" #include "azure_c_shared_utility/sastoken.h" #include "azure_c_shared_utility/httpheaders.h" #include "azure_c_shared_utility/httpapiex.h" #include "azure_c_shared_utility/httpapiexsas.h" #include "azure_c_shared_utility/xlogging.h" #include "azure_c_shared_utility/crt_abstractions.h" typedef struct HTTPAPIEX_SAS_STATE_TAG { char* key; char* uriResource; char* keyName; } HTTPAPIEX_SAS_STATE; static HTTPAPIEX_SAS_STATE* construct_httpex_sas(const char* key, const char* uriResource, const char* keyName) { HTTPAPIEX_SAS_STATE* result; result = (HTTPAPIEX_SAS_STATE*)malloc(sizeof(HTTPAPIEX_SAS_STATE)); if (result == NULL) { LogError("Failure allocating HTTPAPIEX_SAS_Create."); } else { (void)memset(result, 0, sizeof(HTTPAPIEX_SAS_STATE)); if (mallocAndStrcpy_s(&result->key, key) != 0) { /*Codes_SRS_HTTPAPIEXSAS_06_004: [If there are any other errors in the instantiation of this handle then HTTPAPIEX_SAS_Create shall return NULL.]*/ LogError("Failure allocating sas key."); HTTPAPIEX_SAS_Destroy(result); result = NULL; } else if (mallocAndStrcpy_s(&result->uriResource, uriResource) != 0) { /*Codes_SRS_HTTPAPIEXSAS_06_004: [If there are any other errors in the instantiation of this handle then HTTPAPIEX_SAS_Create shall return NULL.]*/ LogError("Failure allocating sas uriResource."); HTTPAPIEX_SAS_Destroy(result); result = NULL; } else if (keyName != NULL && mallocAndStrcpy_s(&result->keyName, keyName) != 0) { /*Codes_SRS_HTTPAPIEXSAS_06_004: [If there are any other errors in the instantiation of this handle then HTTPAPIEX_SAS_Create shall return NULL.]*/ LogError("Failure allocating sas keyName."); HTTPAPIEX_SAS_Destroy(result); result = NULL; } } return result; } HTTPAPIEX_SAS_HANDLE HTTPAPIEX_SAS_Create_From_String(const char* key, const char* uriResource, const char* keyName) { HTTPAPIEX_SAS_HANDLE result = NULL; if (key == NULL || uriResource == NULL) { /* Codes_SRS_HTTPAPIEXSAS_07_001: [ If the parameter key or uriResource is NULL then HTTPAPIEX_SAS_Create_From_String shall return NULL. ] */ LogError("Invalid parameter key: %p, uriResource: %p", key, uriResource); result = NULL; } else { /* 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. ] */ result = construct_httpex_sas(key, uriResource, keyName); } /* 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 ] */ return result; } HTTPAPIEX_SAS_HANDLE HTTPAPIEX_SAS_Create(STRING_HANDLE key, STRING_HANDLE uriResource, STRING_HANDLE keyName) { HTTPAPIEX_SAS_HANDLE result = NULL; if (key == NULL) { /*Codes_SRS_HTTPAPIEXSAS_06_001: [If the parameter key is NULL then HTTPAPIEX_SAS_Create shall return NULL.]*/ LogError("No key passed to HTTPAPIEX_SAS_Create."); } else if (uriResource == NULL) { /*Codes_SRS_HTTPAPIEXSAS_06_002: [If the parameter uriResource is NULL then HTTPAPIEX_SAS_Create shall return NULL.]*/ LogError("No uri resource passed to HTTPAPIEX_SAS_Create."); } else { /*Codes_SRS_HTTPAPIEXSAS_06_003: [The parameter keyName for HTTPAPIEX_SAS_Create is optional and can be NULL.]*/ /*Codes_SRS_HTTPAPIEXSAS_01_001: [ HTTPAPIEX_SAS_Create shall create a new instance of HTTPAPIEX_SAS and return a non-NULL handle to it. ]*/ result = construct_httpex_sas(STRING_c_str(key), STRING_c_str(uriResource), STRING_c_str(keyName) ); } return result; } void HTTPAPIEX_SAS_Destroy(HTTPAPIEX_SAS_HANDLE handle) { /*Codes_SRS_HTTPAPIEXSAS_06_005: [If the parameter handle is NULL then HTTAPIEX_SAS_Destroy shall do nothing and return.]*/ if (handle) { HTTPAPIEX_SAS_STATE* state = (HTTPAPIEX_SAS_STATE*)handle; /*Codes_SRS_HTTPAPIEXSAS_06_006: [HTTAPIEX_SAS_Destroy shall deallocate any structures denoted by the parameter handle.]*/ if (state->key) { free(state->key); } if (state->uriResource) { free(state->uriResource); } if (state->keyName) { free(state->keyName); } free(state); } } HTTPAPIEX_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) { /*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.]*/ if (sasHandle != NULL) { /*Codes_SRS_HTTPAPIEXSAS_06_008: [if the parameter requestHttpHeadersHandle is NULL then fallthrough.]*/ if (requestHttpHeadersHandle != NULL) { /*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.]*/ /*Codes_SRS_HTTPAPIEXSAS_06_010: [If the return result of the invocation of HTTPHeaders_FindHeaderValue is NULL then fallthrough.]*/ if (HTTPHeaders_FindHeaderValue(requestHttpHeadersHandle, "Authorization") != NULL) { HTTPAPIEX_SAS_STATE* state = (HTTPAPIEX_SAS_STATE*)sasHandle; /*Codes_SRS_HTTPAPIEXSAS_06_018: [A value of type time_t that shall be known as currentTime is obtained from calling get_time.]*/ time_t currentTime = get_time(NULL); /*Codes_SRS_HTTPAPIEXSAS_06_019: [If the value of currentTime is (time_t)-1 is then fallthrough.]*/ if (currentTime == (time_t)-1) { LogError("Time does not appear to be working."); } else { /*Codes_SRS_HTTPAPIEXSAS_06_011: [SASToken_Create shall be invoked.]*/ /*Codes_SRS_HTTPAPIEXSAS_06_012: [If the return result of SASToken_Create is NULL then fallthrough.]*/ size_t expiry = (size_t)(difftime(currentTime, 0) + 3600); STRING_HANDLE newSASToken = SASToken_CreateString(state->key, state->uriResource, state->keyName, expiry); if (newSASToken != NULL) { /*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.]*/ if (HTTPHeaders_ReplaceHeaderNameValuePair(requestHttpHeadersHandle, "Authorization", STRING_c_str(newSASToken)) != HTTP_HEADERS_OK) { /*Codes_SRS_HTTPAPIEXSAS_06_014: [If the result of the invocation of HTTPHeaders_ReplaceHeaderNameValuePair is NOT HTTP_HEADERS_OK then fallthrough.]*/ LogError("Unable to replace the old SAS Token."); } /*Codes_SRS_HTTPAPIEXSAS_06_015: [STRING_delete(newSASToken) will be invoked.]*/ STRING_delete(newSASToken); } else { LogError("Unable to create a new SAS token."); } } } } } /*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.]*/ return HTTPAPIEX_ExecuteRequest(handle,requestType,relativePath,requestHttpHeadersHandle,requestContent,statusCode,responseHeadersHandle,responseContent); }