A small memory footprint AMQP implimentation

Dependents:   iothub_client_sample_amqp remote_monitoring simplesample_amqp

Revision:
28:add19eb7defa
Parent:
23:1111ee8bcba4
Child:
31:cafc87baef79
--- a/sasl_mechanism.c	Fri Jun 02 15:53:07 2017 -0700
+++ b/sasl_mechanism.c	Fri Jun 30 10:41:22 2017 -0700
@@ -9,157 +9,157 @@
 
 typedef struct SASL_MECHANISM_INSTANCE_TAG
 {
-	const SASL_MECHANISM_INTERFACE_DESCRIPTION* sasl_mechanism_interface_description;
-	CONCRETE_SASL_MECHANISM_HANDLE concrete_sasl_mechanism_handle;
+    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_HANDLE result;
+    SASL_MECHANISM_HANDLE result;
 
-	/* Codes_SRS_SASL_MECHANISM_01_004: [If the argument `sasl_mechanism_interface_description` is NULL, `saslmechanism_create` shall return NULL.] */
+    /* 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)
     {
         LogError("NULL sasl_mechanism_interface_description");
-		result = NULL;
+        result = NULL;
     }
     /* Codes_SRS_SASL_MECHANISM_01_005: [If any `sasl_mechanism_interface_description` member is NULL, `sasl_mechanism_create` shall fail and return NULL.] */
     else if ((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_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))
+    {
         LogError("Bad interface, concrete_sasl_mechanism_create = %p, concrete_sasl_mechanism_destroy = %p, concrete_sasl_mechanism_get_init_bytes = %p, concrete_sasl_mechanism_get_mechanism_name = %p",
             sasl_mechanism_interface_description->concrete_sasl_mechanism_create,
             sasl_mechanism_interface_description->concrete_sasl_mechanism_destroy,
             sasl_mechanism_interface_description->concrete_sasl_mechanism_get_init_bytes,
             sasl_mechanism_interface_description->concrete_sasl_mechanism_get_mechanism_name);
-		result = NULL;
-	}
-	else
-	{
-		result = (SASL_MECHANISM_HANDLE)malloc(sizeof(SASL_MECHANISM_INSTANCE));
+        result = NULL;
+    }
+    else
+    {
+        result = (SASL_MECHANISM_HANDLE)malloc(sizeof(SASL_MECHANISM_INSTANCE));
         if (result == NULL)
         {
-			/* Codes_SRS_SASL_MECHANISM_01_006: [If allocating the memory needed for the SASL mechanism interface fails then `saslmechanism_create` shall fail and return NULL.] */
-			LogError("Could not allocate memory for SASL mechanism");
+            /* Codes_SRS_SASL_MECHANISM_01_006: [If allocating the memory needed for the SASL mechanism interface fails then `saslmechanism_create` shall fail and return NULL.] */
+            LogError("Could not allocate memory for SASL mechanism");
         }
         else
         {
-			result->sasl_mechanism_interface_description = sasl_mechanism_interface_description;
+            result->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.] */
-			result->concrete_sasl_mechanism_handle = result->sasl_mechanism_interface_description->concrete_sasl_mechanism_create((void*)sasl_mechanism_create_parameters);
-			if (result->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.] */
+            /* 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.] */
+            result->concrete_sasl_mechanism_handle = result->sasl_mechanism_interface_description->concrete_sasl_mechanism_create((void*)sasl_mechanism_create_parameters);
+            if (result->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.] */
                 LogError("concrete_sasl_mechanism_create failed");
                 free(result);
-				result = NULL;
-			}
-		}
-	}
+                result = NULL;
+            }
+        }
+    }
 
-	/* Codes_SRS_SASL_MECHANISM_01_001: [`saslmechanism_create` shall return on success a non-NULL handle to a new SASL mechanism interface.] */
-	return result;
+    /* Codes_SRS_SASL_MECHANISM_01_001: [`saslmechanism_create` shall return on success a non-NULL handle to a new SASL mechanism interface.] */
+    return result;
 }
 
 void saslmechanism_destroy(SASL_MECHANISM_HANDLE sasl_mechanism)
 {
     if (sasl_mechanism == NULL)
     {
-		/* Codes_SRS_SASL_MECHANISM_01_009: [If the argument `sasl_mechanism` is NULL, `saslmechanism_destroy` shall do nothing.] */
-		LogError("NULL sasl_mechanism");
+        /* Codes_SRS_SASL_MECHANISM_01_009: [If the argument `sasl_mechanism` is NULL, `saslmechanism_destroy` shall do nothing.] */
+        LogError("NULL sasl_mechanism");
     }
     else
     {
-		/* 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->sasl_mechanism_interface_description->concrete_sasl_mechanism_destroy(sasl_mechanism->concrete_sasl_mechanism_handle);
+        /* 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->sasl_mechanism_interface_description->concrete_sasl_mechanism_destroy(sasl_mechanism->concrete_sasl_mechanism_handle);
 
-		/* Codes_SRS_SASL_MECHANISM_01_007: [`saslmechanism_destroy` shall free all resources associated with the SASL mechanism handle.] */
-		free(sasl_mechanism);
-	}
+        /* Codes_SRS_SASL_MECHANISM_01_007: [`saslmechanism_destroy` shall free all resources associated with the SASL mechanism handle.] */
+        free(sasl_mechanism);
+    }
 }
 
 int saslmechanism_get_init_bytes(SASL_MECHANISM_HANDLE sasl_mechanism, SASL_MECHANISM_BYTES* init_bytes)
 {
-	int result;
+    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)
-	{
+    /* 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)
+    {
         LogError("NULL sasl_mechanism");
         result = __FAILURE__;
-	}
-	else
-	{
-		/* 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->sasl_mechanism_interface_description->concrete_sasl_mechanism_get_init_bytes(sasl_mechanism->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.] */
+    }
+    else
+    {
+        /* 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->sasl_mechanism_interface_description->concrete_sasl_mechanism_get_init_bytes(sasl_mechanism->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.] */
             LogError("concrete_sasl_mechanism_get_init_bytes failed");
             result = __FAILURE__;
-		}
-		else
-		{
-			/* Codes_SRS_SASL_MECHANISM_01_011: [On success, `saslmechanism_get_init_bytes` shall return 0.] */
-			result = 0;
-		}
-	}
+        }
+        else
+        {
+            /* Codes_SRS_SASL_MECHANISM_01_011: [On success, `saslmechanism_get_init_bytes` shall return 0.] */
+            result = 0;
+        }
+    }
 
-	return result;
+    return result;
 }
 
 const char* saslmechanism_get_mechanism_name(SASL_MECHANISM_HANDLE sasl_mechanism)
 {
-	const char* result;
+    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)
-	{
+    /* 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)
+    {
         LogError("NULL sasl_mechanism");
         result = NULL;
-	}
-	else
-	{
-		/* 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->sasl_mechanism_interface_description->concrete_sasl_mechanism_get_mechanism_name(sasl_mechanism->concrete_sasl_mechanism_handle);
+    }
+    else
+    {
+        /* 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->sasl_mechanism_interface_description->concrete_sasl_mechanism_get_mechanism_name(sasl_mechanism->concrete_sasl_mechanism_handle);
         if (result == NULL)
         {
             LogError("concrete_sasl_mechanism_get_mechanism_name failed");
         }
-	}
+    }
 
-	return result;
+    return result;
 }
 
 int saslmechanism_challenge(SASL_MECHANISM_HANDLE sasl_mechanism, const SASL_MECHANISM_BYTES* challenge_bytes, SASL_MECHANISM_BYTES* response_bytes)
 {
-	int result;
+    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)
-	{
+    /* 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)
+    {
         LogError("NULL sasl_mechanism");
         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.] */
+    }
+    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.] */
             LogError("concrete_sasl_mechanism_challenge failed");
             result = __FAILURE__;
-		}
-		else
-		{
-			/* Codes_SRS_SASL_MECHANISM_01_019: [On success, `saslmechanism_challenge` shall return 0.] */
-			result = 0;
-		}
-	}
+        }
+        else
+        {
+            /* Codes_SRS_SASL_MECHANISM_01_019: [On success, `saslmechanism_challenge` shall return 0.] */
+            result = 0;
+        }
+    }
 
-	return result;
+    return result;
 }