nsdl_support.cpp

00001 // NSDL library support functions
00002 
00003 #include "mbed.h"
00004 #include "nsdl_support.h"
00005 #include "EthernetInterface.h"
00006 #include "node_cfg.h"
00007 
00008 
00009 #define COAP_UDP_PORT   5683
00010 extern uint8_t NSP_address_bytes[];
00011 //static ns_address_t app_dest;
00012 
00013 extern UDPSocket server;
00014 extern Endpoint nsp;
00015 
00016 #define MEM_VALID(x) \
00017     int s##x=0;\
00018     int *h##x = new int [1];\
00019     std::printf("[stack]0x%08x\t[heap]0x%08x\t[memory avail]%d bytes \tLine: %d %s\r\n", &s##x, h##x, &s##x-h##x, __LINE__, __FILE__);\
00020     if (h##x > &s##x)\
00021     printf("collision\n");\
00022     else\
00023     delete [] h##x;\
00024     __nop()
00025 
00026 extern char endpoint_name[24];
00027 extern uint8_t ep_type[];
00028 extern uint8_t lifetime_ptr[];
00029 char null_ep_name[] = "";
00030 uint8_t null_ep_type[] = "";
00031 uint8_t null_lifetime_ptr[] = "";
00032 bool nsdl_reg_update_needed = false;
00033 
00034 extern int8_t coap_udp_socket;
00035         
00036 void *nsdl_alloc(uint16_t size)
00037 {
00038     void *buf = malloc(size);
00039     return buf;
00040 }
00041 
00042 void nsdl_free(void* ptr_to_free)
00043 {
00044     free(ptr_to_free);
00045 }
00046 
00047 /*
00048  * Create a static resoure
00049  * Only get is allowed
00050  */
00051 void nsdl_create_static_resource(sn_nsdl_resource_info_s *resource_structure, uint16_t pt_len, uint8_t *pt, uint16_t rpp_len, uint8_t *rpp_ptr, uint8_t *rsc, uint16_t rsc_len)
00052 {
00053     resource_structure->access = SN_GRS_GET_ALLOWED;
00054     resource_structure->mode = SN_GRS_STATIC;
00055     resource_structure->pathlen = pt_len;
00056     resource_structure->path = pt;
00057     resource_structure->resource_parameters_ptr->resource_type_len = rpp_len;
00058     resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr;
00059     resource_structure->resource = rsc;
00060     resource_structure->resourcelen = rsc_len;
00061     sn_nsdl_create_resource(resource_structure);
00062 }
00063 
00064 void nsdl_create_dynamic_resource(sn_nsdl_resource_info_s *resource_structure, uint16_t pt_len, uint8_t *pt, uint16_t rpp_len, uint8_t *rpp_ptr, uint8_t is_observable, sn_grs_dyn_res_callback_t callback_ptr, int access_right)
00065 {
00066     resource_structure->access = (sn_grs_resource_acl_e)access_right;
00067     resource_structure->resource = 0;
00068     resource_structure->resourcelen = 0;
00069     resource_structure->sn_grs_dyn_res_callback = callback_ptr;
00070     resource_structure->mode = SN_GRS_DYNAMIC;
00071     resource_structure->pathlen = pt_len;
00072     resource_structure->path = pt;
00073     resource_structure->resource_parameters_ptr->resource_type_len = rpp_len;
00074     resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr;
00075     resource_structure->resource_parameters_ptr->observable = is_observable;
00076     sn_nsdl_create_resource(resource_structure);
00077 }
00078 
00079 sn_nsdl_ep_parameters_s* nsdl_init_register_endpoint(sn_nsdl_ep_parameters_s *endpoint_structure, uint8_t* name, uint8_t* typename_ptr, uint8_t *lifetime_ptr)
00080 {
00081     if (NULL == endpoint_structure)
00082     {   
00083         endpoint_structure = (sn_nsdl_ep_parameters_s*)nsdl_alloc(sizeof(sn_nsdl_ep_parameters_s));
00084     }
00085     if (endpoint_structure)
00086     {
00087         memset(endpoint_structure, 0, sizeof(sn_nsdl_ep_parameters_s));
00088         endpoint_structure->endpoint_name_ptr = name;
00089         endpoint_structure->endpoint_name_len = strlen((char*)name);
00090         endpoint_structure->type_ptr = typename_ptr;
00091         endpoint_structure->type_len =  strlen((char*)typename_ptr);
00092         endpoint_structure->lifetime_ptr = lifetime_ptr;
00093         endpoint_structure->lifetime_len =  strlen((char*)lifetime_ptr); 
00094     }
00095     return endpoint_structure;
00096 }
00097 
00098 void nsdl_clean_register_endpoint(sn_nsdl_ep_parameters_s **endpoint_structure){
00099     if (*endpoint_structure)
00100     {
00101         nsdl_free(*endpoint_structure);
00102         *endpoint_structure = NULL;
00103     }
00104 }
00105 
00106 static uint8_t tx_cb(sn_nsdl_capab_e protocol, uint8_t *data_ptr, uint16_t data_len, sn_nsdl_addr_s *address_ptr) {
00107     //UDP
00108     printf("TX callback!\n\rSending %d bytes\r\n", data_len);
00109     if(server.sendTo(nsp, (char*)data_ptr, data_len) != data_len)
00110         printf("sending failed\n\r");
00111     return 1;
00112 }
00113 
00114 static uint8_t rx_cb(sn_coap_hdr_s *coap_packet_ptr, sn_nsdl_addr_s *address_ptr){
00115     printf("RX callback!\r\n");
00116     printf("msg_code: %d \r\n", coap_packet_ptr->msg_code);
00117     printf("Payload length: %d bytes\r\n", coap_packet_ptr->payload_len);
00118     int i;
00119     printf("Payload:'");
00120     for (i=0; i < coap_packet_ptr->payload_len; i++)
00121         printf("%c", *(coap_packet_ptr->payload_ptr + i));
00122     printf("' \r\n");
00123     if (coap_packet_ptr->options_list_ptr && coap_packet_ptr->options_list_ptr->location_path_ptr)
00124     {
00125         printf("Location: /");
00126         int i;
00127         for (i=0; i < coap_packet_ptr->options_list_ptr->location_path_len; i++) printf("%c", (char)(coap_packet_ptr->options_list_ptr->location_path_ptr[i]));
00128         printf(" \r\n");
00129     }
00130     //sn_coap_packet_debug(coap_packet_ptr);
00131     return 0;
00132 }
00133 
00134 
00135 void NSP_registration( ) { 
00136        sn_nsdl_ep_parameters_s *endpoint_ptr = NULL;
00137  
00138         endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)endpoint_name, ep_type, lifetime_ptr);
00139         if(sn_nsdl_register_endpoint(endpoint_ptr) != 0) {
00140             printf("NSP re-registering failed\r\n");
00141         } else {
00142             printf("NSP re-registering OK\r\n");
00143             sn_nsdl_update_registration(endpoint_ptr);
00144         }
00145         nsdl_clean_register_endpoint(&endpoint_ptr);
00146 }
00147 
00148 
00149 void nsdl_init(){
00150     //uint8_t nsp_addr[4];
00151     sn_nsdl_mem_s memory_cbs;
00152 
00153     /* Initialize libNsdl */
00154     memory_cbs.sn_nsdl_alloc = &nsdl_alloc;
00155     memory_cbs.sn_nsdl_free = &nsdl_free;
00156     if(sn_nsdl_init(&tx_cb, &rx_cb, &memory_cbs) == -1)
00157         printf("libNsdl init failed\r\n");
00158     else
00159         printf("libNsdl init done\r\n");
00160         server.init();
00161         server.bind(COAP_UDP_PORT);
00162         nsp.set_address(NSP_IP_ADDRESS, COAP_UDP_PORT);
00163         /* Set nsp address for library */     
00164         //set_NSP_address(NSP_address_bytes, COAP_UDP_PORT, SN_NSDL_ADDRESS_TYPE_IPV6);
00165         set_NSP_address(NSP_address_bytes, COAP_UDP_PORT, SN_NSDL_ADDRESS_TYPE_IPV4);
00166 }
00167 
00168 void nsdl_reg_update()
00169     {
00170     sn_nsdl_ep_parameters_s *endpoint_ptr = NULL;
00171 //    endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)endpoint_name, ep_type, lifetime_ptr);
00172 //  reg update should be invoked with null parameters if nothing is changing
00173     endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)null_ep_name, null_ep_type, null_lifetime_ptr);
00174     if(sn_nsdl_update_registration(endpoint_ptr) != 0)
00175         printf("NSP re-registering failed\r\n");
00176     else
00177         printf("NSP re-registering OK\r\n");
00178     nsdl_clean_register_endpoint(&endpoint_ptr);
00179     }
00180     
00181 void nsdl_reg_update_timeout()
00182     {
00183     nsdl_reg_update_needed = true;
00184     }
00185 
00186 void nsdl_event_loop()
00187 {
00188 
00189     sn_nsdl_addr_s received_packet_address;
00190     uint8_t received_address[4];
00191 
00192     memset(&received_packet_address, 0, sizeof(sn_nsdl_addr_s));
00193     received_packet_address.addr_ptr = received_address;
00194 
00195     while(1)
00196     {
00197         //        pc.printf("checking reg timeout\r\n");
00198         if (nsdl_reg_update_needed)
00199         {
00200             nsdl_reg_update_needed = false;
00201             nsdl_reg_update();
00202         }
00203     }
00204 }