diff options
Diffstat (limited to 'ctrl')
| -rw-r--r-- | ctrl/libhicnctrl/CMakeLists.txt | 6 | ||||
| -rw-r--r-- | ctrl/libhicnctrl/src/hicn_plugin_api.c | 1033 |
2 files changed, 350 insertions, 689 deletions
diff --git a/ctrl/libhicnctrl/CMakeLists.txt b/ctrl/libhicnctrl/CMakeLists.txt index ff586ff22..63e27ba42 100644 --- a/ctrl/libhicnctrl/CMakeLists.txt +++ b/ctrl/libhicnctrl/CMakeLists.txt @@ -40,6 +40,7 @@ if (BUILD_HICNPLUGIN AND "${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") set(LIBHICNCTRL ${LIBHICNCTRL}-memif) set(LINK_FLAGS "-Wl,-unresolved-symbols=ignore-in-shared-libs") list(APPEND HICN_LIBRARIES ${HICNPLUGIN_LIBRARIES}) + list(APPEND HICN_LIBRARIES ${SAFE_VAPI_LIBRARIES}) endif() set(LIBHICNCTRL ${LIBHICNCTRL} CACHE INTERNAL "" FORCE) @@ -58,7 +59,8 @@ if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR) set(HICN_INCLUDE_DIRS ${HICN_INCLUDE_DIRS} - ${HICNPLUGIN_INCLUDE_DIRS}) + ${HICNPLUGIN_INCLUDE_DIRS} + ${SAFE_VAPI_INCLUDE_DIRS}) else() if (${CMAKE_SYSTEM_NAME} STREQUAL "Android") @@ -71,10 +73,12 @@ else() HICN_INCLUDE_DIRS ${HICN_INCLUDE_DIRS} ${HICNPLUGIN_INCLUDE_DIRS} + ${SAFE_VAPI_INCLUDE_DIRS} ) list(APPEND DEPENDENCIES hicn_plugin + ${SAFE_VAPI_SHARED} ) else () set(HICN_LIBRARIES ${LIBHICN_SHARED}) diff --git a/ctrl/libhicnctrl/src/hicn_plugin_api.c b/ctrl/libhicnctrl/src/hicn_plugin_api.c index 52c83959e..fc8954b65 100644 --- a/ctrl/libhicnctrl/src/hicn_plugin_api.c +++ b/ctrl/libhicnctrl/src/hicn_plugin_api.c @@ -26,6 +26,7 @@ #include <string.h> // memmove, strcasecmp #include <sys/socket.h> // socket #include <unistd.h> // close, fcntl +#include <vapi/vapi_safe.h> #include <hicn/ctrl/api.h> #include <hicn/ctrl/commands.h> @@ -36,6 +37,7 @@ #include <vapi/interface.api.vapi.h> #include <hicn/util/log.h> #include <hicn/util/map.h> +#include <hicn/error.h> #include <vnet/ip/ip6_packet.h> #include <vnet/ip/ip_types_api.h> @@ -43,40 +45,20 @@ #define MAX_OUTSTANDING_REQUESTS 4 #define RESPONSE_QUEUE_SIZE 2 -// #define vl_typedefs -// #include <vpp/api/vpe_all_api_h.h> -// #undef vl_typedefs - DEFINE_VAPI_MSG_IDS_HICN_API_JSON DEFINE_VAPI_MSG_IDS_INTERFACE_API_JSON DEFINE_VAPI_MSG_IDS_IP_API_JSON typedef struct { - u32 sockets_count; vapi_ctx_t g_vapi_ctx_instance; bool async; } vapi_skc_ctx_t; vapi_skc_ctx_t vapi_skc = { - .sockets_count = 0, .g_vapi_ctx_instance = NULL, .async = false, }; -/* - * Internal state associated to a pending request - */ -typedef struct { - vapi_ctx_t g_vapi_ctx_instance; - int seq; - // Reusing the buffer of data to hold both the unparsed response from the - // forwarder and the result of the parsing - hc_data_t *data; - /* Information used to process results */ - int size_in; - HC_PARSE parse; -} hc_sock_request_t; - /** * Messages to the forwarder might be multiplexed thanks to the seqNum fields in * the header_control_message structure. The forwarder simply answers back the @@ -84,9 +66,9 @@ typedef struct { * outgoing queries so that replied can be demultiplexed and treated * appropriately. */ -TYPEDEF_MAP_H(hc_sock_map, int, hc_sock_request_t *); -TYPEDEF_MAP(hc_sock_map, int, hc_sock_request_t *, int_cmp, int_snprintf, - generic_snprintf); +/* TYPEDEF_MAP_H(hc_sock_map, int, hc_sock_request_t *); */ +/* TYPEDEF_MAP(hc_sock_map, int, hc_sock_request_t *, int_cmp, int_snprintf, */ +/* generic_snprintf); */ struct hc_sock_s { vapi_ctx_t g_vapi_ctx_instance; @@ -100,23 +82,8 @@ struct hc_sock_s { int seq; bool async; - hc_sock_map_t *map; }; -hc_sock_request_t *hc_sock_request_create(int seq, hc_data_t *data, - HC_PARSE parse) { - assert(data); - - hc_sock_request_t *request = malloc(sizeof(hc_sock_request_t)); - if (!request) return NULL; - request->seq = seq; - request->data = data; - request->parse = parse; - request->size_in = 0; - return request; -} - -void hc_sock_request_free(hc_sock_request_t *request) { free(request); } /****************************************************************************** * Message helper types and aliases @@ -160,11 +127,6 @@ typedef union { #undef _ } hc_msg_payload_t; -#define IS_DUMP_MSG(a) (a == vapi_msg_id_hicn_api_face_stats_dump || \ - a == vapi_msg_id_hicn_api_routes_dump || \ - a == vapi_msg_id_hicn_api_faces_dump || \ - a == vapi_msg_id_sw_interface_dump) - typedef struct __attribute__ ((__packed__)) { hc_msg_header_t hdr; hc_msg_payload_t payload; @@ -173,8 +135,8 @@ typedef struct __attribute__ ((__packed__)) { typedef void (* NTOH)(void *msg); typedef struct __attribute__((__packed__)) { - hc_sock_t *s; - uint32_t ctx_msg; + hc_data_t *data; + uint32_t curr_msg; } callback_ctx_t; typedef struct __attribute__((__packed__)) { @@ -242,43 +204,22 @@ hc_sock_t *hc_sock_create(void) { memset(s, 0, sizeof(hc_sock_t)); - s->map = hc_sock_map_create(); - if (!s->map) goto ERR_MAP; - //By default the socket is blocking -- not async s->async = 0; return s; -ERR_MAP: - free(s); ERR_SOCK: return NULL; } void hc_sock_free(hc_sock_t *s) { - hc_sock_request_t **request_array = NULL; - int n = hc_sock_map_get_value_array(s->map, &request_array); - if (n < 0) { - ERROR("Could not retrieve pending request array for freeing up resources"); - } else { - for (unsigned i = 0; i < n; i++) { - hc_sock_request_t *request = request_array[i]; - hc_sock_request_free(request); - } - free(request_array); - } - - hc_sock_map_free(s->map); if (s->url) free(s->url); close(s->fd); free(s); - vapi_skc.sockets_count--; - if (vapi_skc.sockets_count == 0) { - vapi_disconnect(vapi_skc.g_vapi_ctx_instance); - vapi_skc.g_vapi_ctx_instance = NULL; - } + vapi_disconnect_safe(); + vapi_skc.g_vapi_ctx_instance = NULL; } int hc_sock_get_next_seq(hc_sock_t *s) { @@ -292,126 +233,21 @@ int hc_sock_set_nonblocking(hc_sock_t *s) { int hc_sock_get_fd(hc_sock_t *s) { return 1; } -vapi_error_e vapi_cb(vapi_ctx_t ctx, void *callback_ctx, vapi_error_e error, bool is_last, void *payload) { - callback_ctx_t *ctx_call = (callback_ctx_t *)callback_ctx; - hc_sock_t *s = ctx_call->s; - int ret = VAPI_OK; - - if ((s->woff != s->roff) && (s->woff % RECV_BUFLEN == 0)) { - ERROR("[hc_sock_process] No more space on the buffer to store responces"); - ret = VAPI_ENOMEM; - goto END; - } - - if (is_last) { - s->buffer[s->woff % RECV_BUFLEN] = ctx_call->ctx_msg; - s->woff++; - } - - if(!payload) { - ret = VAPI_ENOMEM; - goto END; - } - - hc_sock_request_t *request = NULL; - if (hc_sock_map_get(s->map, ctx_call->ctx_msg, &request) < - 0) { - ERROR("[hc_sock_process] Error searching for matching request"); - ret = VAPI_ENOMEM; - goto END; - } - - if (request->data->current == request->data->size) { - if (request->data->size == 0){ - request->data->size = 1; - request->data->buffer = malloc(request->data->in_element_size * request->data->size); - } else { - request->data->buffer = realloc(request->data->buffer, request->data->in_element_size * request->data->size * 2); - request->data->size *=2; - } - } - - if (!request->data->buffer) { - request->data->size = 0; - ret = VAPI_ENOMEM; - goto END; - } - - memcpy(request->data->buffer + - request->data->current * request->data->in_element_size, - payload, request->data->in_element_size); - request->data->current++; - -END: - if (is_last) - free(callback_ctx); - - return ret; -} - int hc_sock_connect(hc_sock_t *s) { - if (vapi_skc.g_vapi_ctx_instance == NULL) { - vapi_error_e rv = vapi_ctx_alloc(&vapi_skc.g_vapi_ctx_instance); - rv = vapi_connect(vapi_skc.g_vapi_ctx_instance, APP_NAME, NULL, - MAX_OUTSTANDING_REQUESTS, RESPONSE_QUEUE_SIZE, - s->async ? VAPI_MODE_NONBLOCKING : VAPI_MODE_BLOCKING, true); - vapi_skc.async = s->async; - if (rv != VAPI_OK) { - vapi_ctx_free(vapi_skc.g_vapi_ctx_instance); - goto ERR_CONNECT; - } - s->g_vapi_ctx_instance = vapi_skc.g_vapi_ctx_instance; - printf("[hc_sock_connect] *connected %s ok", APP_NAME); - } else if (s->async == vapi_skc.async){ - s->g_vapi_ctx_instance = vapi_skc.g_vapi_ctx_instance; - printf("[hc_sock_connect] *connected %s ok", APP_NAME); - } else { - printf("Unable to create %s socket", s->async ? "non blocking" : "blocking"); + + vapi_error_e rv = vapi_connect_safe(&s->g_vapi_ctx_instance, s->async); + if (rv != VAPI_OK) goto ERR_CONNECT; - } - vapi_skc.sockets_count++; return 0; ERR_CONNECT: - ERROR("[hc_sock_connect] connection %s failes", APP_NAME); + ERROR("[hc_sock_connect] connection failed"); return -1; } int hc_sock_send(hc_sock_t *s, hc_msg_t *msg, size_t msglen, int seq) { - vapi_cb_t callback = ((hc_msg_s *)msg)->callback; - callback_ctx_t *callback_ctx = ((hc_msg_s *)msg)->callback_ctx; - - if (!msg || !callback) { - return VAPI_EINVAL; - } - if (vapi_is_nonblocking(s->g_vapi_ctx_instance) && vapi_requests_full(s->g_vapi_ctx_instance)) { - return VAPI_EAGAIN; - } - vapi_error_e rv; - if (VAPI_OK != (rv = vapi_producer_lock (s->g_vapi_ctx_instance))) { - return rv; - } - ((hc_msg_s *)msg)->hicnp_msg->hdr.context = seq; - callback_ctx->ctx_msg = seq; - vapi_msg_id_t msg_id = vapi_lookup_vapi_msg_id_t(s->g_vapi_ctx_instance, ((hc_msg_s *)msg)->hicnp_msg->hdr._vl_msg_id); - ((hc_msg_s *)msg)->ntoh(((hc_msg_s *)msg)->hicnp_msg); - if (IS_DUMP_MSG(msg_id)) { - if (VAPI_OK == (rv = vapi_send_with_control_ping (s->g_vapi_ctx_instance, ((hc_msg_s *)msg)->hicnp_msg, seq))) { - vapi_store_request(s->g_vapi_ctx_instance, seq, true, (vapi_cb_t)callback, callback_ctx); - } - } else { - if (VAPI_OK == (rv = vapi_send (s->g_vapi_ctx_instance, ((hc_msg_s *)msg)->hicnp_msg))) { - vapi_store_request(s->g_vapi_ctx_instance, seq, false, (vapi_cb_t)callback, callback_ctx); - } - } - - if (rv != VAPI_OK) { - if (VAPI_OK != vapi_producer_unlock (s->g_vapi_ctx_instance)) { - abort (); /* this really shouldn't happen */ - } - } - return rv; + return -1; } int hc_sock_get_available(hc_sock_t *s, u8 **buffer, size_t *size) { @@ -420,201 +256,19 @@ int hc_sock_get_available(hc_sock_t *s, u8 **buffer, size_t *size) { } int hc_sock_recv(hc_sock_t *s) { - vapi_error_e rv; - if (VAPI_OK != vapi_producer_unlock (s->g_vapi_ctx_instance)) { - abort (); /* this really shouldn't happen */ - } - if (vapi_is_nonblocking(s->g_vapi_ctx_instance)) { - rv = VAPI_OK; - } else { - rv = vapi_dispatch(s->g_vapi_ctx_instance); - } - - return rv; + // NOT IMPLEMENTED + return -1; } int hc_sock_process(hc_sock_t *s, hc_data_t **pdata) { - int err = 0; - int seq = s->buffer[s->roff % RECV_BUFLEN]; - - hc_sock_request_t *request = NULL; - if (hc_sock_map_get(s->map, seq, &request) < 0) { - ERROR("[hc_sock_process] Error searching for matching request"); - return -1; - } - if (!request) { - ERROR("[hc_sock_process] No request matching received sequence number"); - return -1; - } - - if (s->roff == s->woff) { - ERROR("[hc_sock_process] No data received for the corresponding request"); - return -1; - } - - if(request->parse != NULL) - err = request->parse((u8 *)request, NULL); - request->data->complete = 1; - if (!err && request->data->complete_cb != NULL) - err = request->data->complete_cb(request->data, s); - s->roff++; - - if (pdata) *pdata = request->data; - - hc_sock_map_remove(s->map, seq, NULL); - hc_sock_request_free(request); - - return err; -} - -int hc_sock_callback(hc_sock_t *s, hc_data_t **pdata) { - hc_data_t *data = NULL; - - for (;;) { - int n = hc_sock_recv(s); - if (n == 0) { - goto ERR_EOF; - } - if (n < 0) { - switch (errno) { - case ECONNRESET: - case ENODEV: - /* Forwarder restarted */ - WARN("Forwarder likely restarted: not (yet) implemented"); - goto ERR; - case EWOULDBLOCK: - // DEBUG("Would block... stop reading from socket"); - goto END; - default: - perror("hc_sock_recv"); - goto ERR; - } - } - if (hc_sock_process(s, &data) < 0) { - goto ERR; - } - } -END: - if (pdata) - *pdata = data; - else - hc_data_free(data); - return 0; - -ERR: - hc_data_free(data); -ERR_EOF: + //NOT IMPLEMENTED return -1; } -int hc_sock_reset(hc_sock_t *s) { - s->roff = s->woff = 0; - return 0; -} - /****************************************************************************** * Command-specific structures and functions ******************************************************************************/ -typedef int (*HC_PARSE)(const u8 *, u8 *); - -typedef struct { - hc_action_t cmd; - command_id cmd_id; - size_t size_in; - size_t size_out; - HC_PARSE parse; - data_callback_t complete_cb; -} hc_command_params_t; - -int hc_execute_command(hc_sock_t *s, hc_msg_t *msg, size_t msg_len, - hc_command_params_t *params, hc_data_t **pdata, - bool async) { - if (async) assert(!pdata); - - /* Sanity check */ - switch (params->cmd) { - case ACTION_CREATE: - assert(params->size_in != 0); /* payload repeated */ - //assert(params->size_out == 0); //Face will return the face id - //assert(params->parse == NULL); - break; - case ACTION_DELETE: - assert(params->size_in != 0); /* payload repeated */ - assert(params->size_out == 0); - //assert(params->parse == NULL); - break; - case ACTION_LIST: - assert(params->size_in != 0); - assert(params->size_out != 0); - //assert(params->parse != NULL); - break; - case ACTION_SET: - assert(params->size_in != 0); - assert(params->size_out == 0); - //assert(params->parse == NULL); - break; - default: - return -1; - } - - /* XXX data will at least store the result (complete) */ - hc_data_t *data = hc_data_create(params->size_in, params->size_out, params->complete_cb); - if (!data) { - ERROR("[hc_execute_command] Could not create data storage"); - goto ERR_DATA; - } - - int seq = hc_sock_get_next_seq(s); - - /* Create state used to process the request */ - hc_sock_request_t *request = NULL; - request = hc_sock_request_create(seq, data, params->parse); - if (!request) { - ERROR("[hc_execute_command] Could not create request state"); - goto ERR_REQUEST; - } - - /* Add state to map */ - if (hc_sock_map_add(s->map, seq, request) < 0) { - ERROR("[hc_execute_command] Error adding request state to map"); - goto ERR_MAP; - } - - if (hc_sock_send(s, msg, msg_len, seq) < 0) { - ERROR("[hc_execute_command] Error sending message"); - goto ERR_PROCESS; - } - - if (async) return 0; - - while (!data->complete) { - // CAN WE COLLAPSE THEM INTO A SINGLE COMMAND? Ideally the process would be - // done in the recv - /* - * As the socket is non blocking it might happen that we need to read - * several times before success... shall we alternate between blocking - * and non-blocking mode ? - */ - if (hc_sock_recv(s) < 0) continue; // break; - if (hc_sock_process(s, pdata) < 0) { - ERROR("[hc_execute_command] Error processing socket results"); - goto ERR_PROCESS; - } - } - - if (!pdata) hc_data_free(data); - - return 0; - -ERR_PROCESS: -ERR_MAP: - hc_sock_request_free(request); -ERR_REQUEST: - hc_data_free(data); -ERR_DATA: - return -1; -} /*----------------------------------------------------------------------------* * Listeners @@ -691,104 +345,137 @@ vapi_error_e process_ip_info(struct vapi_ctx_s *ctx, return rv; } -/* A listener in vpp is an interface with classify enabled */ -int listener_list_complete_cb(struct hc_data_s * data, void *ctx) { - // No need to write anything on the dst, no data expected +typedef struct { + u32 swif; + char interface_name[INTERFACE_LEN]; +} hc_vapi_interface_t; + +vapi_error_e listener_list_complete_cb (struct vapi_ctx_s *ctx, + void *callback_ctx, + vapi_error_e rv, + bool is_last, + vapi_payload_sw_interface_details *reply) { + + if (reply == NULL || rv != VAPI_OK) + return rv; + + if (is_last) + return 0; + + hc_data_t *data = (hc_data_t *)callback_ctx; + + if (data->size == data->current) { + data->buffer = realloc(data->buffer, sizeof(hc_vapi_interface_t) * data->size * 2); + + if (!data->buffer) + return VAPI_ENOMEM; + + data->size *=2; + } + + hc_vapi_interface_t *swif = &((hc_vapi_interface_t*)data->buffer)[data->current]; + + swif[0].swif = reply->sw_if_index; + memcpy(swif[0].interface_name, reply->interface_name, INTERFACE_LEN); + + data->current++; + + return rv; +} - hc_sock_t *s = (hc_sock_t *)ctx; - int n_interfaces = data->current; - u32 *swifs = malloc(sizeof(u32) * n_interfaces); +/* LISTENER LIST */ +int hc_listener_list(hc_sock_t *s, hc_data_t **pdata) { int retval = VAPI_OK; + vapi_lock(); + vapi_msg_sw_interface_dump *hicnp_msg; + hicnp_msg = vapi_alloc_sw_interface_dump(s->g_vapi_ctx_instance); - if (!swifs) { + if (!hicnp_msg) { retval = VAPI_ENOMEM; goto END; } - for (int i = 0; i < n_interfaces; i++) { - vapi_payload_sw_interface_details *reply = - (vapi_payload_sw_interface_details *)(data->buffer + i * data->in_element_size); - swifs[i] = reply->sw_if_index; + hicnp_msg->payload.sw_if_index = ~0; + hicnp_msg->payload.name_filter_valid = 0; + + hc_data_t *data = hc_data_create(0, sizeof(hc_vapi_interface_t),NULL); + + if (!data) { + retval = -1; + goto END; + } + + hc_data_t *data2 = hc_data_create(0, 1,NULL); + + if (!data2) { + retval = -1; + goto END; } - vapi_payload_sw_interface_details * temp = (vapi_payload_sw_interface_details *)data->buffer; - data->buffer = malloc(sizeof(hc_listener_t)); + data->buffer = malloc(sizeof(hc_vapi_interface_t)); data->size = 1; - data->current = 0; if (!data->buffer) { - data->current = 0; - retval = VAPI_ENOMEM; + free (data); + retval = -1; + goto FREE_DATA; + } + + int ret = vapi_sw_interface_dump(s->g_vapi_ctx_instance, hicnp_msg, listener_list_complete_cb, data); + + if (ret != VAPI_OK) { + free(data->buffer); + free(data); + retval = -1; + goto FREE_DATA_BUFFER; + } + + data2->buffer = malloc(sizeof(hc_listener_t)); + data2->size = 1; + data2->out_element_size = 1; + + if (!data2->buffer) { + free (data2->buffer); + retval =1 -1; goto CLEAN; } /* Query the forwarder for each interface */ - for(int i = 0; i < n_interfaces; i++) { - size_t index = data->current; + for(int i = 0; i < data->current; i++) { + int index = data2->current; vapi_msg_ip_address_dump* msg = vapi_alloc_ip_address_dump(s->g_vapi_ctx_instance); - msg->payload.sw_if_index = swifs[i]; + msg->payload.sw_if_index = ((hc_vapi_interface_t *)data->buffer)[i].swif; msg->payload.is_ipv6 = 0; - vapi_payload_sw_interface_details *reply = - &(temp[i]); - int retval = vapi_ip_address_dump(s->g_vapi_ctx_instance, msg, process_ip_info, data); + retval = vapi_ip_address_dump(s->g_vapi_ctx_instance, msg, process_ip_info, data2); vapi_msg_ip_address_dump* msg2 = vapi_alloc_ip_address_dump(s->g_vapi_ctx_instance); - + if (retval) goto CLEAN; - - msg2->payload.sw_if_index = swifs[i]; + + msg2->payload.sw_if_index = ((hc_vapi_interface_t *)data->buffer)[i].swif; msg2->payload.is_ipv6 = 1; - retval = vapi_ip_address_dump(s->g_vapi_ctx_instance, msg2, process_ip_info, data); - for (size_t j = index; j < data->current; j++) { - memcpy(((hc_listener_t *)(data->buffer))[j].interface_name, reply->interface_name, INTERFACE_LEN); + retval = vapi_ip_address_dump(s->g_vapi_ctx_instance, msg2, process_ip_info, data2); + for (size_t j = index; j < data2->current; j++) { + memcpy(((hc_listener_t *)(data2->buffer))[j].interface_name, ((hc_vapi_interface_t*)(data->buffer))[i].interface_name, INTERFACE_LEN); } - + if (retval) goto CLEAN; } CLEAN: - free(swifs); - free(temp); - -END: - data->size = data->current; - data->out_element_size = sizeof(hc_listener_t); +FREE_DATA_BUFFER: + free(data->buffer); +FREE_DATA: + free(data); + + data2->size = data2->current; + data2->out_element_size = sizeof(hc_listener_t); + *pdata = data2; + END: + vapi_unlock(); return retval; } -/* LISTENER LIST */ -int hc_listener_list(hc_sock_t *s, hc_data_t **pdata) { - hc_msg_s msg; - vapi_msg_sw_interface_dump *hicnp_msg; - hicnp_msg = vapi_alloc_sw_interface_dump(s->g_vapi_ctx_instance); - - if (!hicnp_msg) return VAPI_ENOMEM; - - msg.hicnp_msg = (hc_hicnp_t *)hicnp_msg; - msg.callback = &vapi_cb; - msg.callback_ctx = malloc(sizeof(callback_ctx_t)); - msg.callback_ctx->s = s; - msg.ntoh = (NTOH)&vapi_msg_sw_interface_dump_hton; - - if (!(msg.callback_ctx)) return VAPI_ENOMEM; - - hicnp_msg->payload.sw_if_index = ~0; - hicnp_msg->payload.name_filter_valid = 0; - - //hicnp_msg->payload.type = 1; //0 v4, 1 v6 - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_LISTENERS, - .size_in = sizeof(vapi_msg_sw_interface_details), - .size_out = sizeof(hc_listener_t), - .parse = (HC_PARSE)NULL, - .complete_cb = listener_list_complete_cb, - }; - - return hc_execute_command(s, (hc_msg_t *)&msg, sizeof(msg), ¶ms, pdata, - false); -} - int hc_listener_list_async(hc_sock_t *s, hc_data_t **pdata) { // NOT IMPLEMENTED return -1; @@ -940,36 +627,29 @@ int hc_connection_set_admin_state_async(hc_sock_t *s, *----------------------------------------------------------------------------*/ /* ROUTE CREATE */ -int parse_route_create(uint8_t *src, uint8_t *dst) { - // No need to write anything on the dst, no data expected +vapi_error_e parse_route_create( vapi_ctx_t ctx, + void *callback_ctx, + vapi_error_e rv, + bool is_last, + vapi_payload_hicn_api_route_nhops_add_reply *reply) { + if (reply == NULL || rv != VAPI_OK) + return rv; - hc_sock_request_t *request = (hc_sock_request_t *)src; - vapi_payload_hicn_api_route_nhops_add_reply *reply = - (vapi_payload_hicn_api_route_nhops_add_reply *)request->data->buffer; + if (reply->retval != VAPI_OK) + return reply->retval; - int retval = reply->retval; - free(reply); - return retval; + return reply->retval; } int _hc_route_create(hc_sock_t *s, hc_route_t *route, bool async) { if (!IS_VALID_FAMILY(route->family)) return -1; - hc_msg_s msg; - + vapi_lock(); vapi_msg_hicn_api_route_nhops_add *hicnp_msg; hicnp_msg = vapi_alloc_hicn_api_route_nhops_add(s->g_vapi_ctx_instance); if (!hicnp_msg) return VAPI_ENOMEM; - msg.hicnp_msg = (hc_hicnp_t *)hicnp_msg; - msg.callback = &vapi_cb; - msg.callback_ctx = malloc(sizeof(callback_ctx_t)); - msg.callback_ctx->s = s; - msg.ntoh = (NTOH)&vapi_msg_hicn_api_route_nhops_add_hton; - - if (!(msg.callback_ctx)) return VAPI_ENOMEM; - if (route->family == AF_INET) { memcpy(&hicnp_msg->payload.prefix.address.un.ip4[0], &route->remote_addr.v4, 4); } @@ -982,17 +662,10 @@ int _hc_route_create(hc_sock_t *s, hc_route_t *route, bool async) { hicnp_msg->payload.face_ids[0] = route->face_id; hicnp_msg->payload.n_faces = 1; - hc_command_params_t params = { - .cmd = ACTION_CREATE, - .cmd_id = ADD_ROUTE, - .size_in = - sizeof(vapi_msg_hicn_api_route_nhops_add), - .size_out = 0, - .parse = (HC_PARSE)parse_route_create, - }; + vapi_error_e ret = vapi_hicn_api_route_nhops_add(s->g_vapi_ctx_instance, hicnp_msg, parse_route_create, NULL); + vapi_unlock(); + return ret; - return hc_execute_command(s, (hc_msg_t *)&msg, sizeof(msg), ¶ms, NULL, - async); } int hc_route_create(hc_sock_t *s, hc_route_t *route) { @@ -1004,54 +677,38 @@ int hc_route_create_async(hc_sock_t *s, hc_route_t *route) { } /* ROUTE DELETE */ +vapi_error_e parse_route_delete( vapi_ctx_t ctx, + void *callback_ctx, + vapi_error_e rv, + bool is_last, + vapi_payload_hicn_api_route_nhop_del_reply *reply) { + if (reply == NULL || rv != VAPI_OK) + return rv; -int parse_route_delete(uint8_t *src, uint8_t *dst) { - // No need to write anything on the dst, no data expected - - hc_sock_request_t *request = (hc_sock_request_t *)src; - vapi_payload_hicn_api_route_nhop_del_reply *reply = - (vapi_payload_hicn_api_route_nhop_del_reply *)request->data->buffer; + if (reply->retval != VAPI_OK) + return reply->retval; - int retval = reply->retval; - free(reply); - return retval; + return reply->retval; } int _hc_route_delete(hc_sock_t *s, hc_route_t *route, bool async) { if (!IS_VALID_FAMILY(route->family)) return -1; - hc_msg_s msg; - + vapi_lock(); vapi_msg_hicn_api_route_nhop_del *hicnp_msg; hicnp_msg = vapi_alloc_hicn_api_route_nhop_del(s->g_vapi_ctx_instance); if (!hicnp_msg) return VAPI_ENOMEM; - msg.hicnp_msg = (hc_hicnp_t *)hicnp_msg; - msg.callback = &vapi_cb; - msg.callback_ctx = malloc(sizeof(callback_ctx_t)); - msg.callback_ctx->s = s; - msg.ntoh = (NTOH)&vapi_msg_hicn_api_route_nhop_del_hton; - - if (!(msg.callback_ctx)) return VAPI_ENOMEM; - memcpy(&hicnp_msg->payload.prefix.address.un.ip6[0], &route->remote_addr, 16); hicnp_msg->payload.prefix.address.af = route->family == AF_INET ? ADDRESS_IP4 : ADDRESS_IP6; hicnp_msg->payload.prefix.len = route->len; hicnp_msg->payload.faceid = route->face_id; - hc_command_params_t params = { - .cmd = ACTION_DELETE, - .cmd_id = REMOVE_ROUTE, - .size_in = - sizeof(vapi_msg_hicn_api_route_nhop_del), - .size_out = 0, - .parse = (HC_PARSE)parse_route_delete, - }; - - return hc_execute_command(s, (hc_msg_t *)&msg, sizeof(msg), ¶ms, NULL, - async); + int retval = vapi_hicn_api_route_nhop_del(s->g_vapi_ctx_instance, hicnp_msg, parse_route_delete, NULL); + vapi_unlock(); + return retval; } int hc_route_delete(hc_sock_t *s, hc_route_t *route) { @@ -1063,84 +720,83 @@ int hc_route_delete_async(hc_sock_t *s, hc_route_t *route) { } /* ROUTE LIST */ -int parse_route_list(uint8_t *src, uint8_t *dst) { - // No need to write anything on the dst, no data expected +vapi_error_e parse_route_list( vapi_ctx_t ctx, + void *callback_ctx, + vapi_error_e rv, + bool is_last, + vapi_payload_hicn_api_routes_details *reply) { - hc_sock_request_t *request = (hc_sock_request_t *)src; + if (reply == NULL || rv != VAPI_OK) + return rv; - int size = 0; - for (int i = 0; i < request->data->current; i++) { - vapi_payload_hicn_api_routes_details *reply = - (vapi_payload_hicn_api_routes_details - *)(request->data->buffer + i * request->data->in_element_size); - size += reply->nfaces; - } - hc_route_t *output = malloc(sizeof(hc_route_t) * size); + if (reply->retval != VAPI_OK) + return reply->retval; - int res = VAPI_OK; + hc_data_t *data = (hc_data_t *)callback_ctx; - if (!output) { - size = 0; - res = VAPI_ENOMEM; - goto END; + int empty_spots = data->size - data->current; + if (empty_spots < reply->nfaces) { + int new_size = data->size + (reply->nfaces - empty_spots); + data->buffer = realloc(data->buffer, sizeof(hc_route_t) * (new_size)); + if (!data->buffer) + return VAPI_ENOMEM; + + data->size =new_size; } - int cur = 0; - for (int j = 0; j < request->data->current; j++) { - vapi_payload_hicn_api_routes_details *reply = - (vapi_payload_hicn_api_routes_details - *)(request->data->buffer + j * request->data->in_element_size); - for (int i = 0; i < reply->nfaces; i++) { - output[cur].face_id = reply->faceids[i]; - output[cur].cost = 1; - output[cur].len = reply->prefix.len; - if (reply->prefix.address.af == ADDRESS_IP6) + for (int i = 0; i < reply->nfaces; i++) { + hc_route_t * route = &((hc_route_t*)(data->buffer))[data->current]; + route->face_id = reply->faceids[i]; + route->cost = 1; + route->len = reply->prefix.len; + if (reply->prefix.address.af == ADDRESS_IP6) { - memcpy(output[cur].remote_addr.v6.as_u8, reply->prefix.address.un.ip6, 16); + memcpy(route->remote_addr.v6.as_u8, reply->prefix.address.un.ip6, 16); } else { - memcpy(output[cur].remote_addr.v4.as_u8, reply->prefix.address.un.ip4, 4); + memcpy(route->remote_addr.v4.as_u8, reply->prefix.address.un.ip4, 4); } - output[cur].family = reply->prefix.address.af == ADDRESS_IP6? AF_INET6 : AF_INET; - cur++; - } + route->family = reply->prefix.address.af == ADDRESS_IP6? AF_INET6 : AF_INET; + data->current++; } -END: - free(request->data->buffer); - request->data->buffer = (void *)output; - request->data->size = size; - request->data->out_element_size = sizeof(hc_route_t); - return res; + return reply->retval; } int _hc_route_list(hc_sock_t *s, hc_data_t **pdata, bool async) { - hc_msg_s msg; - + vapi_lock(); vapi_msg_hicn_api_routes_dump *hicnp_msg; hicnp_msg = vapi_alloc_hicn_api_routes_dump(s->g_vapi_ctx_instance); - if (!hicnp_msg) return VAPI_ENOMEM; + hc_data_t *data = hc_data_create(0, sizeof(hc_route_t),NULL); + int ret = VAPI_OK; - msg.hicnp_msg = (hc_hicnp_t *)hicnp_msg; - msg.callback = &vapi_cb; - msg.callback_ctx = malloc(sizeof(callback_ctx_t)); - msg.callback_ctx->s = s; - msg.ntoh = (NTOH)&vapi_msg_hicn_api_routes_dump_hton; + if (!data){ + ret = -1; + goto err; + } + + data->buffer = malloc(sizeof(hc_route_t)); + data->size = 1; - if (!(msg.callback_ctx)) return VAPI_ENOMEM; + if (!data->buffer) { + ret = -1; + goto err_free; + } - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_ROUTES, - .size_in = sizeof(vapi_msg_hicn_api_routes_details), - .size_out = sizeof(hc_route_t), - .parse = (HC_PARSE)parse_route_list, - }; + ret = vapi_hicn_api_routes_dump(s->g_vapi_ctx_instance, hicnp_msg, parse_route_list, data); - return hc_execute_command(s, (hc_msg_t *)&msg, sizeof(msg), ¶ms, pdata, - async); + if (ret != VAPI_OK) + goto err_free; + + *pdata = data; + + err_free: + free(data); + err: + vapi_unlock(); + return ret; } int hc_route_list(hc_sock_t *s, hc_data_t **pdata) { @@ -1226,57 +882,46 @@ int hc_connection_to_local_listener(const hc_connection_t *connection, } /* FACE CREATE */ -int parse_face_create(uint8_t *src, uint8_t *dst) { - // No need to write anything on the dst, no data expected +vapi_error_e parse_face_create( vapi_ctx_t ctx, + void *callback_ctx, + vapi_error_e rv, + bool is_last, + vapi_payload_hicn_api_face_add_reply *reply) { - hc_sock_request_t *request = (hc_sock_request_t *)src; - vapi_payload_hicn_api_face_add_reply *reply = - (vapi_payload_hicn_api_face_add_reply *)request->data->buffer; + if (reply == NULL || rv != VAPI_OK) + return rv; - hc_face_t *output = malloc(sizeof(hc_face_t)); + if (reply->retval != VAPI_OK) + return reply->retval; - int retval = VAPI_OK; - int size = 1; + hc_data_t *data = (hc_data_t *)callback_ctx; - if (!output) { - size = 0; - retval = VAPI_ENOMEM; - goto END; - } + hc_face_t *output = (hc_face_t *)data->buffer; output->id = reply->faceid; - retval = reply->retval; - -END: - free(request->data->buffer); - request->data->buffer = (void *)output; - request->data->size = size; - request->data->out_element_size = sizeof(hc_face_t); - return retval; + return reply->retval; } int hc_face_create(hc_sock_t *s, hc_face_t *face) { - hc_msg_s msg; + vapi_lock(); vapi_msg_hicn_api_face_add *hicnp_msg; hicnp_msg = vapi_alloc_hicn_api_face_add(s->g_vapi_ctx_instance); - if (!hicnp_msg) return VAPI_ENOMEM; - - msg.hicnp_msg = (hc_hicnp_t *)hicnp_msg; - msg.callback = &vapi_cb; - msg.callback_ctx = malloc(sizeof(callback_ctx_t)); - msg.callback_ctx->s = s; - msg.ntoh = (NTOH)&vapi_msg_hicn_api_face_add_hton; - - if (!msg.callback_ctx) return VAPI_ENOMEM; + int retval = VAPI_OK; + if (!hicnp_msg) { + retval = VAPI_ENOMEM; + goto END; + } switch(face->face.type) { case FACE_TYPE_HICN: { u8 check = ip46_address_is_ip4((ip46_address_t *)&(face->face.local_addr)) == ip46_address_is_ip4((ip46_address_t *)&(face->face.remote_addr)); - if (!check) - return -1; + if (!check) { + retval = -1; + goto END; + } hicnp_msg->payload.type = IP_FACE; if (ip46_address_is_ip4((ip46_address_t *)&(face->face.local_addr))) @@ -1297,11 +942,13 @@ int hc_face_create(hc_sock_t *s, hc_face_t *face) { memcpy(hicnp_msg->payload.face.ip.if_name, face->face.netdevice.name, IFNAMSIZ); break; } - case FACE_TYPE_UDP: + case FACE_TYPE_UDP: { u8 check = ip46_address_is_ip4((ip46_address_t *)&(face->face.local_addr)) == ip46_address_is_ip4((ip46_address_t *)&(face->face.remote_addr)); - if (!check) - return -1; + if (!check) { + retval = -1; + goto END; + } hicnp_msg->payload.type = UDP_FACE; if (ip46_address_is_ip4((ip46_address_t *)&(face->face.local_addr))) @@ -1325,179 +972,189 @@ int hc_face_create(hc_sock_t *s, hc_face_t *face) { break; } default: - return -1; + { + retval = -1; + goto END; + } } - hc_command_params_t params = { - .cmd = ACTION_CREATE, - .cmd_id = ADD_CONNECTION, - .size_in = - sizeof(vapi_msg_hicn_api_face_add), - .size_out = sizeof(hc_face_t), - .parse = (HC_PARSE)parse_face_create, - }; + hc_data_t *data = hc_data_create(0, sizeof(hc_face_t),NULL); - hc_data_t *data; + if (!data) { + retval = -1; + goto END; + } - int ret = hc_execute_command(s, (hc_msg_t *)&msg, sizeof(msg), ¶ms, &data, - false); - if (ret == 0) - face->id = ((hc_face_t *)data->buffer)->id; + data->buffer = malloc(sizeof(hc_face_t)); + data->out_element_size = sizeof(hc_face_t); - return ret; -} + if (!data->buffer) { + free (data); + retval = -1; + goto END; + } -/* FACE DELETE */ -int parse_face_delete(uint8_t *src, uint8_t *dst) { - // No need to write anything on the dst, no data expected + retval = vapi_hicn_api_face_add(s->g_vapi_ctx_instance, hicnp_msg, parse_face_create, data); + + if (retval != VAPI_OK) + goto END; - hc_sock_request_t *request = (hc_sock_request_t *)src; - vapi_payload_hicn_api_face_del_reply *reply = - (vapi_payload_hicn_api_face_del_reply *)request->data->buffer; + face->id = ((hc_face_t *)data->buffer)->id; - int retval = reply->retval; - free(reply); + END: + vapi_unlock(); return retval; } -int hc_face_delete(hc_sock_t *s, hc_face_t *face) { +vapi_error_e parse_face_delete( vapi_ctx_t ctx, + void *callback_ctx, + vapi_error_e rv, + bool is_last, + vapi_payload_hicn_api_face_del_reply *reply) { - hc_msg_s msg; + if (reply == NULL || rv != VAPI_OK) + return rv; + + return reply->retval; +} + +int hc_face_delete(hc_sock_t *s, hc_face_t *face) { vapi_msg_hicn_api_face_del *hicnp_msg; + vapi_lock(); hicnp_msg = vapi_alloc_hicn_api_face_del(s->g_vapi_ctx_instance); if (!hicnp_msg) return VAPI_ENOMEM; - msg.hicnp_msg = (hc_hicnp_t *)hicnp_msg; - msg.callback = &vapi_cb; - msg.callback_ctx = malloc(sizeof(callback_ctx_t)); - msg.callback_ctx->s = s; - msg.ntoh = (NTOH)&vapi_msg_hicn_api_face_del_hton; - - if (!msg.callback_ctx) return VAPI_ENOMEM; - hicnp_msg->payload.faceid = face->id; - hc_command_params_t params = { - .cmd = ACTION_DELETE, - .cmd_id = REMOVE_ROUTE, - .size_in = - sizeof(vapi_msg_hicn_api_face_del), - .size_out = 0, - .parse = (HC_PARSE)parse_face_delete, - }; - - return hc_execute_command(s, (hc_msg_t *)&msg, sizeof(msg), ¶ms, NULL, - false); + int retval = vapi_hicn_api_face_del(s->g_vapi_ctx_instance, hicnp_msg, parse_face_delete, NULL); + vapi_unlock(); + return retval; } /* FACE LIST */ -int parse_face_list(uint8_t *src, uint8_t *dst) { - // No need to write anything on the dst, no data expected +vapi_error_e parse_face_list( vapi_ctx_t ctx, + void *callback_ctx, + vapi_error_e rv, + bool is_last, + vapi_payload_hicn_api_faces_details *reply) { - hc_sock_request_t *request = (hc_sock_request_t *)src; - hc_face_t *output = malloc(sizeof(hc_face_t)*request->data->current); + if (reply == NULL || rv != VAPI_OK) + return rv; - int retval = VAPI_OK; - int cur = 0; + if (reply->retval != VAPI_OK) + return reply->retval; - if (!output) { - retval = VAPI_ENOMEM; - request->data->current = 0; - goto END; + hc_data_t *data = (hc_data_t *)callback_ctx; + + if (data->size == data->current) { + int new_size = data->size *2; + data->buffer = realloc(data->buffer, sizeof(hc_face_t) * (new_size)); + if (!data->buffer) + return VAPI_ENOMEM; + + data->size =new_size; } - for (int j = 0; j < request->data->current; j++) { - vapi_payload_hicn_api_faces_details *reply = - (vapi_payload_hicn_api_faces_details - *)(request->data->buffer + j * request->data->in_element_size); - retval = reply->retval; - switch(reply->type) + int retval = VAPI_OK; + + hc_face_t * face = &((hc_face_t *)(data->buffer))[data->current]; + switch(reply->type) { - case IP_FACE: + case IP_FACE: { if (reply->face.ip.local_addr.af == ADDRESS_IP4) { - memcpy(output[j].face.local_addr.v4.as_u8, reply->face.ip.local_addr.un.ip4, IPV4_ADDR_LEN); - memcpy(output[j].face.remote_addr.v4.as_u8, reply->face.ip.remote_addr.un.ip4, IPV4_ADDR_LEN); + memcpy(face->face.local_addr.v4.as_u8, reply->face.ip.local_addr.un.ip4, IPV4_ADDR_LEN); + memcpy(face->face.remote_addr.v4.as_u8, reply->face.ip.remote_addr.un.ip4, IPV4_ADDR_LEN); } else { - memcpy(output[j].face.local_addr.v6.as_u8, reply->face.ip.local_addr.un.ip6, IPV6_ADDR_LEN); - memcpy(output[j].face.remote_addr.v6.as_u8, reply->face.ip.remote_addr.un.ip6, IPV6_ADDR_LEN); + memcpy(face->face.local_addr.v6.as_u8, reply->face.ip.local_addr.un.ip6, IPV6_ADDR_LEN); + memcpy(face->face.remote_addr.v6.as_u8, reply->face.ip.remote_addr.un.ip6, IPV6_ADDR_LEN); } - output[j].face.type = FACE_TYPE_HICN; - output[j].id = reply->faceid; - output[j].face.netdevice.index = reply->face.ip.swif; - memcpy(output[j].face.netdevice.name, reply->face.ip.if_name, IFNAMSIZ); + face->face.type = FACE_TYPE_HICN; + face->id = reply->faceid; + face->face.netdevice.index = reply->face.ip.swif; + memcpy(face->face.netdevice.name, reply->face.ip.if_name, IFNAMSIZ); break; } case UDP_FACE: { if (reply->face.ip.local_addr.af == ADDRESS_IP4) { - memcpy(output[j].face.local_addr.v4.as_u8, reply->face.udp.local_addr.un.ip4, IPV4_ADDR_LEN); - memcpy(output[j].face.remote_addr.v4.as_u8, reply->face.udp.remote_addr.un.ip4, IPV4_ADDR_LEN); + memcpy(face->face.local_addr.v4.as_u8, reply->face.udp.local_addr.un.ip4, IPV4_ADDR_LEN); + memcpy(face->face.remote_addr.v4.as_u8, reply->face.udp.remote_addr.un.ip4, IPV4_ADDR_LEN); } else { - memcpy(output[j].face.local_addr.v6.as_u8, reply->face.udp.local_addr.un.ip6, IPV6_ADDR_LEN); - memcpy(output[j].face.remote_addr.v6.as_u8, reply->face.udp.remote_addr.un.ip6, IPV6_ADDR_LEN); + memcpy(face->face.local_addr.v6.as_u8, reply->face.udp.local_addr.un.ip6, IPV6_ADDR_LEN); + memcpy(face->face.remote_addr.v6.as_u8, reply->face.udp.remote_addr.un.ip6, IPV6_ADDR_LEN); } - output[j].face.local_port = reply->face.udp.lport; - output[j].face.remote_port = reply->face.udp.rport; - output[j].face.type = FACE_TYPE_UDP; - output[j].id = reply->faceid; - output[j].face.netdevice.index = reply->face.udp.swif; - memcpy(output[j].face.netdevice.name, reply->face.udp.if_name, IFNAMSIZ); + face->face.local_port = reply->face.udp.lport; + face->face.remote_port = reply->face.udp.rport; + face->face.type = FACE_TYPE_UDP; + face->id = reply->faceid; + face->face.netdevice.index = reply->face.udp.swif; + memcpy(face->face.netdevice.name, reply->face.udp.if_name, IFNAMSIZ); break; } default: retval = -1; } if (!retval) - cur++; - } + data->current++; -END: - free(request->data->buffer); - request->data->buffer = (void *)output; - request->data->size = request->data->current; - request->data->out_element_size = sizeof(hc_face_t); - return retval; + return reply->retval; } int hc_face_list(hc_sock_t *s, hc_data_t **pdata) { - hc_msg_s msg; - + vapi_lock(); vapi_msg_hicn_api_faces_dump *hicnp_msg; hicnp_msg = vapi_alloc_hicn_api_faces_dump(s->g_vapi_ctx_instance); - if (!hicnp_msg) return VAPI_ENOMEM; - - msg.hicnp_msg = (hc_hicnp_t *)hicnp_msg; - msg.callback = &vapi_cb; - msg.callback_ctx = malloc(sizeof(callback_ctx_t)); - msg.callback_ctx->s = s; - msg.ntoh = (NTOH)&vapi_msg_hicn_api_faces_dump_hton; + int retval = 0; + if (!hicnp_msg) { + retval = VAPI_ENOMEM; + goto END; + } - if (!msg.callback_ctx) return VAPI_ENOMEM; + hc_data_t *data = hc_data_create(0, sizeof(hc_face_t),NULL); + if (!data) { + retval = -1; + goto END; + } - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_CONNECTIONS, - .size_in = sizeof(vapi_msg_hicn_api_faces_details), - .size_out = sizeof(hc_face_t), - .parse = (HC_PARSE)parse_face_list, - }; + data->buffer = malloc(sizeof(hc_face_t)); + data->size = 1; - return hc_execute_command(s, (hc_msg_t *)&msg, sizeof(msg), ¶ms, (hc_data_t**)pdata, - false); + if (!data->buffer) { + free (data); + retval = -1; + goto err; } + + retval = vapi_hicn_api_faces_dump(s->g_vapi_ctx_instance, hicnp_msg, parse_face_list, data); + *pdata = data; + + if (retval != VAPI_OK) + goto err; + + data->size = data->current; + vapi_unlock(); + return retval; + + err: + free(data); + END: + vapi_unlock(); + return retval; +} + int hc_connection_parse_to_face(void *in, hc_face_t *face) { return 0; } int hc_face_list_async(hc_sock_t *s) @@ -1663,4 +1320,4 @@ u8 * format_vl_api_address_union (u8 * s, va_list * args) { return NULL; -} +}
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