diff options
Diffstat (limited to 'rpc_misc.c')
| -rw-r--r-- | rpc_misc.c | 62 |
1 files changed, 57 insertions, 5 deletions
@@ -72,6 +72,11 @@ static hal_error_t get_random(void *buffer, const size_t length) #warning PIN code not yet fully implemented +typedef struct { + hal_client_handle_t handle; + hal_user_t logged_in; +} client_slot_t; + #ifndef HAL_PIN_MINIMUM_ITERATIONS #define HAL_PIN_MINIMUM_ITERATIONS 10000 #endif @@ -80,13 +85,50 @@ static hal_error_t get_random(void *buffer, const size_t length) #define HAL_PIN_DEFAULT_ITERATIONS 20000 #endif -static hal_error_t set_pin(const hal_user_t user, +#ifndef HAL_STATIC_CLIENT_STATE_BLOCKS +#define HAL_STATIC_CLIENT_STATE_BLOCKS 10 +#endif + +#if HAL_STATIC_CLIENT_STATE_BLOCKS > 0 +static client_slot_t client_handle[HAL_STATIC_CLIENT_STATE_BLOCKS]; +#endif + +/* + * Client handles are supplied by the application, we don't get to + * pick them, we just store them and associate a login state with + * them. HAL_USER_NONE indicates an empty slot in the table. + */ + +static inline client_slot_t *alloc_slot(void) +{ +#if HAL_STATIC_CLIENT_STATE_BLOCKS > 0 + for (int i = 0; i < sizeof(client_handle)/sizeof(*client_handle); i++) + if (client_handle[i].logged_in == HAL_USER_NONE) + return &client_handle[i]; +#endif + + return NULL; +} + +static inline client_slot_t *find_handle(const hal_client_handle_t handle) +{ +#if HAL_STATIC_CLIENT_STATE_BLOCKS > 0 + for (int i = 0; i < sizeof(client_handle)/sizeof(*client_handle); i++) + if (client_handle[i].logged_in != HAL_USER_NONE && client_handle[i].handle.handle == handle.handle) + return &client_handle[i]; +#endif + + return NULL; +} + +static hal_error_t set_pin(const hal_client_handle_t client, + const hal_user_t user, const char * const newpin, const size_t newpin_len) { assert(newpin != NULL && newpin_len != 0); #warning Need access control to decide who is allowed to set this PIN -#warning Need length checks on supplied PIN +#warning Need length checks (here or in caller) on supplied PIN const hal_ks_pin_t *pp; hal_error_t err; @@ -136,15 +178,25 @@ static hal_error_t login(const hal_client_handle_t client, if (diff != 0) return HAL_ERROR_PIN_INCORRECT; -#warning Do something with client table here + client_slot_t *slot = find_handle(client); + + if (slot != NULL && (slot = alloc_slot()) == NULL) + return HAL_ERROR_NO_CLIENT_SLOTS_AVAILABLE; + + slot->handle = client; + slot->logged_in = user; return HAL_OK; } static hal_error_t logout(const hal_client_handle_t client) { -#warning And do something else with client table here - return HAL_ERROR_IMPOSSIBLE; + client_slot_t *slot = find_handle(client); + + if (slot != NULL) + slot->logged_in = HAL_USER_NONE; + + return HAL_OK; } const hal_rpc_misc_dispatch_t hal_rpc_remote_misc_dispatch = { |