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- added methods which will allocate mem

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This commit is contained in:
Martin Willi 2005-11-16 16:10:47 +00:00
parent a698ba19a4
commit 146e568fe7
2 changed files with 59 additions and 1 deletions
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33
Source/charon/utils/randomizer.c
View File

@ -121,6 +121,20 @@ static status_t get_random_bytes(private_randomizer_t *this,size_t bytes, u_int8
{
return (this->get_bytes_from_device(this, FALSE, bytes, buffer));
}
/**
* Implements randomizer_t's allocate_random_bytes function.
* See #randomizer_t.allocate_random_bytes for description.
*/
static status_t allocate_random_bytes(private_randomizer_t *this, size_t bytes, chunk_t *chunk)
{
chunk->len = bytes;
chunk->ptr = allocator_alloc(bytes);
if (chunk->ptr == NULL)
{
return OUT_OF_RES;
}
return (this->get_bytes_from_device(this, FALSE, bytes, chunk->ptr));
}
/**
* Implements randomizer_t's get_pseudo_random_bytes function.
@ -131,6 +145,23 @@ static status_t get_pseudo_random_bytes(private_randomizer_t *this,size_t bytes,
return (this->get_bytes_from_device(this, TRUE, bytes, buffer));
}
/**
* Implements randomizer_t's allocate_random_bytes function.
* See #randomizer_t.allocate_random_bytes for description.
*/
static status_t allocate_pseudo_random_bytes(private_randomizer_t *this, size_t bytes, chunk_t *chunk)
{
chunk->len = bytes;
chunk->ptr = allocator_alloc(bytes);
if (chunk->ptr == NULL)
{
return OUT_OF_RES;
}
return (this->get_bytes_from_device(this, TRUE, bytes, chunk->ptr));
}
/**
* Implements randomizer_t's destroy function.
* See #randomizer_t.destroy for description.
@ -169,7 +200,9 @@ randomizer_t *randomizer_create_on_devices(char * random_dev_name,char * prandom
/* public functions */
this->public.get_random_bytes = (status_t (*) (randomizer_t *,size_t, u_int8_t *)) get_random_bytes;
this->public.allocate_random_bytes = (status_t (*) (randomizer_t *,size_t, chunk_t *)) allocate_random_bytes;
this->public.get_pseudo_random_bytes = (status_t (*) (randomizer_t *,size_t, u_int8_t *)) get_pseudo_random_bytes;
this->public.allocate_pseudo_random_bytes = (status_t (*) (randomizer_t *,size_t, chunk_t *)) allocate_pseudo_random_bytes;
this->public.destroy = (status_t (*) (randomizer_t *))destroy;
/* private functions */

27
Source/charon/utils/randomizer.h
View File

@ -47,6 +47,19 @@ struct randomizer_s {
*/
status_t (*get_random_bytes) (randomizer_t *this,size_t bytes, u_int8_t *buffer);
/**
* @brief Allocates space and writes in random bytes
*
* @param this calling randomizer_t object
* @param bytes Number of bytes to allocate
* @param[out] chunk chunk which will hold the allocated random bytes
* @return
* - SUCCESS
* - OUT_OF_RES
* - FAILED
*/
status_t (*allocate_random_bytes) (randomizer_t *this, size_t bytes, chunk_t *chunk);
/**
* @brief Reads a specific number of bytes from pseudo random device.
*
@ -59,7 +72,19 @@ struct randomizer_s {
* - FAILED
*/
status_t (*get_pseudo_random_bytes) (randomizer_t *this,size_t bytes, u_int8_t *buffer);
/**
* @brief Allocates space and writes in pseudo random bytes
*
* @param this calling randomizer_t object
* @param bytes Number of bytes to allocate
* @param[out] chunk chunk which will hold the allocated random bytes
* @return
* - SUCCESS
* - OUT_OF_RES
* - FAILED
*/
status_t (*allocate_pseudo_random_bytes) (randomizer_t *this, size_t bytes, chunk_t *chunk);
/**
* @brief Destroys a randomizer_t object.