A small memory footprint AMQP implimentation
Dependents: iothub_client_sample_amqp remote_monitoring simplesample_amqp
sasl_mechanism.c
- Committer:
- AzureIoTClient
- Date:
- 2017-02-24
- Revision:
- 19:000ab4e6a2c1
- Parent:
- 17:923575db8b2d
- Child:
- 20:206846c14c80
File content as of revision 19:000ab4e6a2c1:
// 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/optimize_size.h" #include "azure_uamqp_c/sasl_mechanism.h" #include "azure_uamqp_c/amqpalloc.h" typedef struct SASL_MECHANISM_INSTANCE_TAG { const SASL_MECHANISM_INTERFACE_DESCRIPTION* sasl_mechanism_interface_description; CONCRETE_SASL_MECHANISM_HANDLE concrete_sasl_mechanism_handle; } SASL_MECHANISM_INSTANCE; SASL_MECHANISM_HANDLE saslmechanism_create(const SASL_MECHANISM_INTERFACE_DESCRIPTION* sasl_mechanism_interface_description, void* sasl_mechanism_create_parameters) { SASL_MECHANISM_INSTANCE* sasl_mechanism_instance; /* Codes_SRS_SASL_MECHANISM_01_004: [If the argument sasl_mechanism_interface_description is NULL, saslmechanism_create shall return NULL.] */ if ((sasl_mechanism_interface_description == NULL) || /* Codes_SRS_SASL_MECHANISM_01_005: [If any sasl_mechanism_interface_description member is NULL, sasl_mechanism_create shall fail and return NULL.] */ (sasl_mechanism_interface_description->concrete_sasl_mechanism_create == NULL) || (sasl_mechanism_interface_description->concrete_sasl_mechanism_destroy == NULL) || (sasl_mechanism_interface_description->concrete_sasl_mechanism_get_init_bytes == NULL) || (sasl_mechanism_interface_description->concrete_sasl_mechanism_get_mechanism_name == NULL)) { sasl_mechanism_instance = NULL; } else { sasl_mechanism_instance = (SASL_MECHANISM_INSTANCE*)amqpalloc_malloc(sizeof(SASL_MECHANISM_INSTANCE)); if (sasl_mechanism_instance != NULL) { sasl_mechanism_instance->sasl_mechanism_interface_description = sasl_mechanism_interface_description; /* Codes_SRS_SASL_MECHANISM_01_002: [In order to instantiate the concrete SASL mechanism implementation the function concrete_sasl_mechanism_create from the sasl_mechanism_interface_description shall be called, passing the sasl_mechanism_create_parameters to it.] */ sasl_mechanism_instance->concrete_sasl_mechanism_handle = sasl_mechanism_instance->sasl_mechanism_interface_description->concrete_sasl_mechanism_create((void*)sasl_mechanism_create_parameters); if (sasl_mechanism_instance->concrete_sasl_mechanism_handle == NULL) { /* Codes_SRS_SASL_MECHANISM_01_003: [If the underlying concrete_sasl_mechanism_create call fails, saslmechanism_create shall return NULL.] */ amqpalloc_free(sasl_mechanism_instance); sasl_mechanism_instance = NULL; } } } /* Codes_SRS_SASL_MECHANISM_01_001: [saslmechanism_create shall return on success a non-NULL handle to a new SASL mechanism interface.] */ return (SASL_MECHANISM_HANDLE)sasl_mechanism_instance; } void saslmechanism_destroy(SASL_MECHANISM_HANDLE sasl_mechanism) { if (sasl_mechanism != NULL) { SASL_MECHANISM_INSTANCE* sasl_mechanism_instance = (SASL_MECHANISM_INSTANCE*)sasl_mechanism; /* Codes_SRS_SASL_MECHANISM_01_008: [saslmechanism_destroy shall also call the concrete_sasl_mechanism_destroy function that is member of the sasl_mechanism_interface_description argument passed to saslmechanism_create, while passing as argument to concrete_sasl_mechanism_destroy the result of the underlying concrete SASL mechanism handle.] */ sasl_mechanism_instance->sasl_mechanism_interface_description->concrete_sasl_mechanism_destroy(sasl_mechanism_instance->concrete_sasl_mechanism_handle); /* Codes_SRS_SASL_MECHANISM_01_007: [saslmechanism_destroy shall free all resources associated with the SASL mechanism handle.] */ amqpalloc_free(sasl_mechanism_instance); } } int saslmechanism_get_init_bytes(SASL_MECHANISM_HANDLE sasl_mechanism, SASL_MECHANISM_BYTES* init_bytes) { int result; /* Codes_SRS_SASL_MECHANISM_01_012: [If the argument sasl_mechanism is NULL, saslmechanism_get_init_bytes shall fail and return a non-zero value.] */ if (sasl_mechanism == NULL) { result = __FAILURE__; } else { SASL_MECHANISM_INSTANCE* sasl_mechanism_instance = (SASL_MECHANISM_INSTANCE*)sasl_mechanism; /* Codes_SRS_SASL_MECHANISM_01_010: [saslmechanism_get_init_bytes shall call the specific concrete_sasl_mechanism_get_init_bytes function specified in saslmechanism_create, passing the init_bytes argument to it.] */ if (sasl_mechanism_instance->sasl_mechanism_interface_description->concrete_sasl_mechanism_get_init_bytes(sasl_mechanism_instance->concrete_sasl_mechanism_handle, init_bytes) != 0) { /* Codes_SRS_SASL_MECHANISM_01_013: [If the underlying concrete_sasl_mechanism_get_init_bytes fails, saslmechanism_get_init_bytes shall fail and return a non-zero value.] */ result = __FAILURE__; } else { /* Codes_SRS_SASL_MECHANISM_01_011: [On success, saslmechanism_get_init_bytes shall return 0.] */ result = 0; } } return result; } const char* saslmechanism_get_mechanism_name(SASL_MECHANISM_HANDLE sasl_mechanism) { const char* result; /* Codes_SRS_SASL_MECHANISM_01_016: [If the argument sasl_mechanism is NULL, saslmechanism_get_mechanism_name shall fail and return a non-zero value.] */ if (sasl_mechanism == NULL) { result = NULL; } else { SASL_MECHANISM_INSTANCE* sasl_mechanism_instance = (SASL_MECHANISM_INSTANCE*)sasl_mechanism; /* Codes_SRS_SASL_MECHANISM_01_014: [saslmechanism_get_mechanism_name shall call the specific concrete_sasl_mechanism_get_mechanism_name function specified in saslmechanism_create.] */ /* Codes_SRS_SASL_MECHANISM_01_015: [On success, saslmechanism_get_mechanism_name shall return a pointer to a string with the mechanism name.] */ /* Codes_SRS_SASL_MECHANISM_01_017: [If the underlying concrete_sasl_mechanism_get_mechanism_name fails, saslmechanism_get_mechanism_name shall return NULL.] */ result = sasl_mechanism_instance->sasl_mechanism_interface_description->concrete_sasl_mechanism_get_mechanism_name(sasl_mechanism_instance->concrete_sasl_mechanism_handle); } return result; } int saslmechanism_challenge(SASL_MECHANISM_HANDLE sasl_mechanism, const SASL_MECHANISM_BYTES* challenge_bytes, SASL_MECHANISM_BYTES* response_bytes) { int result; /* Codes_SRS_SASL_MECHANISM_01_020: [If the argument sasl_mechanism is NULL, saslmechanism_challenge shall fail and return a non-zero value.] */ if (sasl_mechanism == NULL) { result = __FAILURE__; } else { /* Codes_SRS_SASL_MECHANISM_01_018: [saslmechanism_challenge shall call the specific concrete_sasl_mechanism_challenge function specified in saslmechanism_create, while passing the challenge_bytes and response_bytes arguments to it.] */ if (sasl_mechanism->sasl_mechanism_interface_description->concrete_sasl_mechanism_challenge(sasl_mechanism->concrete_sasl_mechanism_handle, challenge_bytes, response_bytes) != 0) { /* Codes_SRS_SASL_MECHANISM_01_021: [If the underlying concrete_sasl_mechanism_challenge fails, saslmechanism_challenge shall fail and return a non-zero value.] */ result = __FAILURE__; } else { /* Codes_SRS_SASL_MECHANISM_01_019: [On success, saslmechanism_challenge shall return 0.] */ result = 0; } } return result; }