/* This is a small demo of the NetX Web HTTP Client/Server API running on a high-performance NetX TCP/IP stack. */ /* This demo works for IPv4 only */ #include "tx_api.h" #include "nx_api.h" /* If not using FileX, define this option and define the file writing services declared in filex_stub.h. #define NX_WEB_HTTP_NO_FILEX */ #ifndef NX_WEB_HTTP_NO_FILEX #include "fx_api.h" #else #include "filex_stub.h" #endif #ifndef NX_DISABLE_IPV4 #include "nx_web_http_client.h" #include "nx_web_http_server.h" #include "nx_crypto.h" #include "nx_secure_tls_api.h" #include "nx_secure_x509.h" /* Comment out this macro to see the separated API for building custom HTTP client requests. */ #define NX_WEB_SIMPLE_HTTPS_GET_DEMO #define DEMO_STACK_SIZE 4096 /* Replace the 'ram' driver with your Ethernet driver. */ VOID _nx_ram_network_driver(struct NX_IP_DRIVER_STRUCT *driver_req); VOID _fx_ram_driver(FX_MEDIA *media_ptr) ; /* Set up the HTTP client global variables. */ #define CLIENT_PACKET_SIZE (NX_WEB_HTTP_CLIENT_MIN_PACKET_SIZE * 2) static TX_THREAD client_thread; static NX_PACKET_POOL client_pool; static NX_WEB_HTTP_CLIENT my_client; static NX_IP client_ip; static UINT error_counter; /* Set up the HTTP server global variables */ #define SERVER_PACKET_SIZE (NX_WEB_HTTP_SERVER_MIN_PACKET_SIZE * 2) static NX_WEB_HTTP_SERVER my_server; static NX_PACKET_POOL server_pool; static TX_THREAD server_thread; static NX_IP server_ip; static NXD_ADDRESS server_ip_address; static void https_client_thread_entry(ULONG thread_input); static void https_server_thread_entry(ULONG thread_input); #ifdef NX_WEB_HTTPS_ENABLE /* HTTPS/TLS setup. */ /* Define some demo certificates. First, the server/device certificate. */ static unsigned char test_device_cert_der[] = { 0x30, 0x82, 0x03, 0xd2, 0x30, 0x82, 0x02, 0xba, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x01, 0x01, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30, 0x7a, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x08, 0x0c, 0x02, 0x43, 0x41, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x07, 0x0c, 0x09, 0x53, 0x61, 0x6e, 0x20, 0x44, 0x69, 0x65, 0x67, 0x6f, 0x31, 0x16, 0x30, 0x14, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x0d, 0x45, 0x78, 0x70, 0x72, 0x65, 0x73, 0x73, 0x20, 0x4c, 0x6f, 0x67, 0x69, 0x63, 0x31, 0x14, 0x30, 0x12, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x0c, 0x0b, 0x4e, 0x65, 0x74, 0x58, 0x20, 0x53, 0x65, 0x63, 0x75, 0x72, 0x65, 0x31, 0x1c, 0x30, 0x1a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x13, 0x4e, 0x65, 0x74, 0x58, 0x20, 0x53, 0x65, 0x63, 0x75, 0x72, 0x65, 0x20, 0x54, 0x65, 0x73, 0x74, 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static unsigned int test_device_cert_der_len = 982; /* Server private RSA key. */ static unsigned char test_device_cert_key_der[] = { 0x30, 0x82, 0x04, 0xa4, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00, 0xae, 0x03, 0x2c, 0xec, 0xa2, 0x79, 0xd1, 0x15, 0x20, 0x88, 0x4d, 0xcd, 0xa2, 0x1b, 0x05, 0xe3, 0xbd, 0x55, 0xad, 0xc6, 0x1f, 0x64, 0xe8, 0xb5, 0xc5, 0x0d, 0x67, 0xfc, 0x7e, 0xda, 0xfb, 0x70, 0xf6, 0xc9, 0x47, 0x87, 0x3a, 0xaa, 0x88, 0x00, 0xf1, 0xa7, 0xf7, 0xe1, 0xf5, 0x2c, 0x54, 0x0e, 0x33, 0xda, 0xbe, 0x9c, 0x66, 0x30, 0xd9, 0x40, 0xeb, 0x1d, 0xce, 0xe1, 0x55, 0x15, 0x2b, 0x11, 0x47, 0x6c, 0x7e, 0x88, 0xc6, 0x24, 0xcf, 0x87, 0x1b, 0xb5, 0x1f, 0x47, 0xb9, 0xef, 0xad, 0x29, 0xd3, 0x2e, 0x43, 0xee, 0x39, 0xdd, 0x09, 0x54, 0xba, 0xfc, 0xed, 0xbc, 0x2e, 0x0e, 0x53, 0x15, 0x37, 0xcb, 0xc5, 0xf5, 0xee, 0x70, 0x2a, 0xe8, 0x01, 0x6d, 0xb1, 0x39, 0x94, 0x5a, 0xc2, 0x8a, 0x00, 0x04, 0xa9, 0xff, 0xea, 0x56, 0xf7, 0xd7, 0xa8, 0x1b, 0xa4, 0x26, 0xcd, 0x28, 0xaf, 0xfa, 0x52, 0x85, 0x1c, 0x26, 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0x0c, 0xc5, 0x87, 0x38, 0xf5, 0xb6, 0xda, 0x8a, 0xee, 0x62, 0xc8, 0xc0, 0xa2, 0x8d, 0xbf, 0xd5, 0xf8, 0xba, 0xb5, 0x74, 0xf0, 0x07, 0xa6, 0x1c, 0xcf, 0x76, 0x61, 0xbe, 0xa4, 0x88, 0x4a, 0x95, 0xb0, 0xa3, 0x70, 0x73, 0xa1, 0x6f, 0x73, 0xf0, 0xe8, 0x38, 0x8d, 0xe8, 0xd0, 0x7e, 0x2c, 0x0c, 0xdc, 0x21, 0xfa, 0xc1 }; static unsigned int test_device_cert_key_der_len = 1192; /* Trusted CA certificate for Client. */ static unsigned char test_ca_cert_der[] = { 0x30, 0x82, 0x03, 0xc7, 0x30, 0x82, 0x02, 0xaf, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x09, 0x00, 0xa1, 0x79, 0xb0, 0x6a, 0x32, 0xbc, 0x48, 0x67, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30, 0x7a, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x08, 0x0c, 0x02, 0x43, 0x41, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x07, 0x0c, 0x09, 0x53, 0x61, 0x6e, 0x20, 0x44, 0x69, 0x65, 0x67, 0x6f, 0x31, 0x16, 0x30, 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0x89, 0x19, 0x2c, 0xb7, 0xb3, 0xa5, 0xf7, 0xa1, 0x4a, 0xc3, 0xc1, 0xdd, 0xaf, 0xb5, 0x1a, 0x16, 0x44, 0xdc, 0xa8, 0xb5, 0xca, 0xd0, 0x30, 0xaa, 0x7e, 0x73, 0xd5, 0x2e, 0x65, 0xd6, 0xf9, 0xbf, 0x5f, 0xda, 0x6f, 0x13, 0xe9, 0xd7, 0x12, 0x6c, 0x3a, 0x6c, 0x50, 0x26, 0x78, 0x6e, 0xc6, 0xeb, 0x75, 0xe1, 0x3c }; static unsigned int test_ca_cert_der_len = 971; #define ca_cert_der test_ca_cert_der #define ca_cert_der_len test_ca_cert_der_len /* TLS buffers and certificate containers. */ static CHAR crypto_metadata_server[20000 * NX_WEB_HTTP_SERVER_SESSION_MAX]; static CHAR crypto_metadata_client[20000 * NX_WEB_HTTP_SERVER_SESSION_MAX]; static UCHAR tls_packet_buffer[40000]; static NX_SECURE_X509_CERT certificate; static NX_SECURE_X509_CERT trusted_certificate; static NX_SECURE_X509_CERT remote_certificate, remote_issuer; static UCHAR remote_cert_buffer[2000]; static UCHAR remote_issuer_buffer[2000]; /* For TLS Web servers, define NX_SECURE_ENABLE_AEAD_CIPHER in NetX Crypto to allow web browsers to connect using AES_128_GCM cipher suites. */ extern const NX_SECURE_TLS_CRYPTO nx_crypto_tls_ciphers; #endif /*NX_WEB_HTTPS_ENABLE */ /* Define the RAM disk memory for FileX demo. */ static UCHAR media_memory[4096]; static CHAR ram_disk_memory[4096]; static FX_MEDIA ram_disk; /* HTTP server stack area. */ static UCHAR server_stack[16000]; /* Local IP address. */ #define HTTP_SERVER_ADDRESS IP_ADDRESS(192, 168, 1, 150) #define HTTP_CLIENT_ADDRESS IP_ADDRESS(192, 168, 1, 157) int main() { /* Enter the ThreadX kernel. */ tx_kernel_enter(); } /* Define what the initial system looks like. */ void tx_application_define(void *first_unused_memory) {CHAR *pointer; UINT status; error_counter = 0; /* Setup the working pointer. */ pointer = (CHAR *) first_unused_memory; /* Create a helper thread for the server. */ tx_thread_create(&server_thread, "HTTP Server thread", https_server_thread_entry, 0, pointer, DEMO_STACK_SIZE, 4, 4, TX_NO_TIME_SLICE, TX_AUTO_START); pointer = pointer + DEMO_STACK_SIZE; /* Initialize the NetX system. */ nx_system_initialize(); /* Create the server packet pool. */ status = nx_packet_pool_create(&server_pool, "HTTP Server Packet Pool", SERVER_PACKET_SIZE, pointer, SERVER_PACKET_SIZE*16); pointer = pointer + SERVER_PACKET_SIZE * 16; if (status) error_counter++; /* Create an IP instance. */ status = nx_ip_create(&server_ip, "HTTP Server IP", HTTP_SERVER_ADDRESS, 0xFFFFFF00UL, &server_pool, _nx_ram_network_driver, pointer, 4096, 1); pointer = pointer + 4096; if (status) error_counter++; /* Enable ARP and supply ARP cache memory for the server IP instance. */ status = nx_arp_enable(&server_ip, (void *) pointer, 1024); pointer = pointer + 1024; if (status) error_counter++; /* Enable TCP traffic. */ status = nx_tcp_enable(&server_ip); if (status) error_counter++; /* Create the HTTP Client thread. */ status = tx_thread_create(&client_thread, "HTTP Client", https_client_thread_entry, 0, pointer, DEMO_STACK_SIZE, 6, 6, TX_NO_TIME_SLICE, TX_AUTO_START); pointer = pointer + DEMO_STACK_SIZE; if (status) error_counter++; /* Create the Client packet pool. */ status = nx_packet_pool_create(&client_pool, "HTTP Client Packet Pool", CLIENT_PACKET_SIZE, pointer, CLIENT_PACKET_SIZE*16); pointer = pointer + CLIENT_PACKET_SIZE * 16; if (status) error_counter++; /* Create an IP instance. */ status = nx_ip_create(&client_ip, "HTTP Client IP", HTTP_CLIENT_ADDRESS, 0xFFFFFF00UL, &client_pool, _nx_ram_network_driver, pointer, 2048, 1); pointer = pointer + 2048; if (status) error_counter++; status = nx_arp_enable(&client_ip, (void *) pointer, 1024); pointer = pointer + 2048; if (status) error_counter++; /* Enable TCP traffic. */ status = nx_tcp_enable(&client_ip); if (status) error_counter++; } /* Define the application's authentication check. This is called by the HTTP server whenever a new request is received. */ UINT authentication_check(NX_WEB_HTTP_SERVER *server_ptr, UINT request_type, CHAR *resource, CHAR **name, CHAR **password, CHAR **realm) { NX_PARAMETER_NOT_USED(server_ptr); NX_PARAMETER_NOT_USED(request_type); NX_PARAMETER_NOT_USED(resource); /* Just use a simple name, password, and realm for all requests and resources. */ *name = "name"; *password = "password"; *realm = "NetX Duo HTTP demo"; /* Request basic authentication. */ return(NX_WEB_HTTP_BASIC_AUTHENTICATE); } #ifdef NX_WEB_HTTPS_ENABLE /* Callback to setup TLS parameters for secure HTTPS. */ UINT tls_setup_callback(NX_WEB_HTTP_CLIENT *client_ptr, NX_SECURE_TLS_SESSION *tls_session) { UINT status; NX_PARAMETER_NOT_USED(client_ptr); /* Initialize and create TLS session. */ status = nx_secure_tls_session_create(tls_session, &nx_crypto_tls_ciphers, crypto_metadata_client, sizeof(crypto_metadata_client)); /* Check status. */ if (status != NX_SUCCESS) { return(status); } /* Allocate space for packet reassembly. */ status = nx_secure_tls_session_packet_buffer_set(tls_session, tls_packet_buffer, sizeof(tls_packet_buffer)); /* Check status. */ if (status != NX_SUCCESS) { return(status); } /* Add a CA Certificate to our trusted store for verifying incoming server certificates. */ nx_secure_x509_certificate_initialize(&trusted_certificate, ca_cert_der, (USHORT)ca_cert_der_len, NX_NULL, 0, NULL, 0, NX_SECURE_X509_KEY_TYPE_NONE); nx_secure_tls_trusted_certificate_add(tls_session, &trusted_certificate); /* Need to allocate space for the certificate coming in from the remote host. */ nx_secure_tls_remote_certificate_allocate(tls_session, &remote_certificate, remote_cert_buffer, sizeof(remote_cert_buffer)); nx_secure_tls_remote_certificate_allocate(tls_session, &remote_issuer, remote_issuer_buffer, sizeof(remote_issuer_buffer)); return(NX_SUCCESS); } #endif /* Callback invoked when HTTP(S) client processes a response header. This example shows how the HTTP headers are extracted. */ VOID http_response_callback(NX_WEB_HTTP_CLIENT *client_ptr, CHAR *field_name, UINT field_name_length, CHAR *field_value, UINT field_value_length) { CHAR name[100]; CHAR value[100]; NX_PARAMETER_NOT_USED(client_ptr); if (field_name_length >= sizeof(name) || field_value_length >= sizeof(value)) { return; } memset(name, 0, sizeof(name)); memset(value, 0, sizeof(value)); memcpy(name, field_name, field_name_length); /* Use case of memcpy is verified. */ memcpy(value, field_value, field_value_length); /* Use case of memcpy is verified. */ printf("Received header: \n\tField name: %s (%d bytes)\n\tValue: %s (%d bytes)\n--------------\n", name, field_name_length, value, field_value_length); } /* Thread entry for the HTTP(S) Client demo. */ VOID https_client_thread_entry(ULONG thread_input) { UINT status; UINT get_status; NX_PACKET *receive_packet; UCHAR receive_buffer[1000]; ULONG bytes; NX_PARAMETER_NOT_USED(thread_input); /* Give IP task and driver a chance to initialize the system. */ tx_thread_sleep( NX_IP_PERIODIC_RATE); /* Create an HTTP client instance. */ status = nx_web_http_client_create(&my_client, "HTTP Client", &client_ip, &client_pool, 1536); /* GET the test page */ /* Use the 'NetX' service to send a GET request to the server (can only use IPv4 addresses). */ server_ip_address.nxd_ip_address.v4 = HTTP_SERVER_ADDRESS; server_ip_address.nxd_ip_version = NX_IP_VERSION_V4; /* Set the header callback routine. */ nx_web_http_client_response_header_callback_set(&my_client, http_response_callback); #ifdef NX_WEB_SIMPLE_HTTPS_GET_DEMO /* This is a fully-contained GET request API. Alternatively, you can build custom requests with the nx_web_http_client_connect API used below. */ #ifdef NX_WEB_HTTPS_ENABLE status = nx_web_http_client_get_secure_start(&my_client, &server_ip_address, NX_WEB_HTTPS_SERVER_PORT, "/test.txt.large", "192.168.1.150", "name", "password", tls_setup_callback, NX_WAIT_FOREVER); #else status = nx_web_http_client_get_start(&my_client, &server_ip_address, NX_WEB_HTTP_SERVER_PORT, "/test.txt.large", "192.168.1.150", "name", "password", NX_WAIT_FOREVER); #endif #else /* NX_WEB_SIMPLE_HTTPS_GET_DEMO */ #ifdef NX_WEB_HTTPS_ENABLE status = nx_web_http_client_secure_connect(&my_client, &server_ip_address, NX_WEB_HTTPS_SERVER_PORT, tls_setup_callback, NX_WAIT_FOREVER); #else status = nx_web_http_client_connect(&my_client, &server_ip_address, NX_WEB_HTTP_SERVER_PORT, NX_WAIT_FOREVER); #endif /* Check status. */ if (status != NX_SUCCESS) { printf("Error in HTTPS Connect: 0x%x\n", status); return; } /* Initialize HTTP request. */ status = nx_web_http_client_request_initialize(&my_client, NX_WEB_HTTP_METHOD_GET, /* GET, PUT, DELETE, POST, HEAD */ "/test.txt", "192.168.1.150", 0, /* Used by PUT and POST */ NX_FALSE, /* If true, input_size is ignored. */ "name", //"name", "password", // "password", NX_WAIT_FOREVER); /* Check status. */ if (status != NX_SUCCESS) { printf("Error in HTTPS request intialization: 0x%x\n", status); return; } /* Send the HTTP request we just built. */ status = nx_web_http_client_request_send(&my_client, NX_WAIT_FOREVER); /* Check status. */ if (status != NX_SUCCESS) { printf("Error in HTTPS request send: 0x%x\n", status); return; } #endif /* Receive response data from the server. Loop until all data is received. */ get_status = NX_SUCCESS; while(get_status != NX_WEB_HTTP_GET_DONE) { get_status = nx_web_http_client_response_body_get(&my_client, &receive_packet, NX_WAIT_FOREVER); /* Check for error. */ if (get_status != NX_SUCCESS && get_status != NX_WEB_HTTP_GET_DONE) { printf("HTTPS get packet failed, error: 0x%x\n", get_status); return; } else { status = nx_packet_data_extract_offset(receive_packet, 0, receive_buffer, 100, &bytes); if(status) { printf("Error in extracting response body data: 0x%x\n", status); } receive_buffer[bytes] = 0; printf("Received data: %s\n", receive_buffer); nx_packet_release(receive_packet); } } /* Clear out the HTTP client when we are done. */ status = nx_web_http_client_delete(&my_client); return; } /************* HTTP(S) Server *************************/ /* Server request callback is invoked whenever an HTTP(S) client sends a request to the server port. */ UINT server_request_callback(NX_WEB_HTTP_SERVER *server_ptr, UINT request_type, CHAR *resource, NX_PACKET *packet_ptr) { NX_PACKET *response_pkt; UINT status; CHAR response[] = "Test response from server"; NX_PARAMETER_NOT_USED(resource); /* Process GET request. */ if(request_type == NX_WEB_HTTP_SERVER_GET_REQUEST) { /* Generate HTTP header. */ status = nx_web_http_server_callback_generate_response_header(server_ptr, &response_pkt, NX_WEB_HTTP_STATUS_OK, sizeof(response) - 1, "text/htm", NX_NULL); if (status) { return(status); } nx_packet_data_append(response_pkt, response, sizeof(response) - 1, server_ptr -> nx_web_http_server_packet_pool_ptr, NX_WAIT_FOREVER); status = nx_web_http_server_callback_packet_send(server_ptr, response_pkt); if (status) { nx_packet_release(response_pkt); return(status); } } else { /* Indicate we have not processed the response to client yet.*/ return(NX_SUCCESS); } /* Indicate the response to client is transmitted. */ return(NX_WEB_HTTP_CALLBACK_COMPLETED); } /* Define the helper HTTP server thread. */ void https_server_thread_entry(ULONG thread_input) { UINT status; UINT server_port; NX_PARAMETER_NOT_USED(thread_input); fx_media_format(&ram_disk, _fx_ram_driver, // Driver entry ram_disk_memory, // RAM disk memory pointer media_memory, // Media buffer pointer sizeof(media_memory), // Media buffer size "MY_RAM_DISK", // Volume Name 1, // Number of FATs 32, // Directory Entries 0, // Hidden sectors 256, // Total sectors 512, // Sector size 8, // Sectors per cluster 1, // Heads 1); // Sectors per track /* Open the RAM disk. */ fx_media_open(&ram_disk, "RAM DISK", _fx_ram_driver, ram_disk_memory, media_memory, sizeof(media_memory)) ; fx_file_create(&ram_disk, "TEST.TXT"); /* Give NetX a chance to initialize the system. */ tx_thread_sleep(NX_IP_PERIODIC_RATE); #ifdef NX_WEB_HTTPS_ENABLE server_port = NX_WEB_HTTPS_SERVER_PORT; #else server_port = NX_WEB_HTTP_SERVER_PORT; #endif /* Create the HTTPS Server. */ status = nx_web_http_server_create(&my_server, "My HTTP Server", &server_ip, server_port, &ram_disk, &server_stack, sizeof(server_stack), &server_pool, authentication_check, server_request_callback); if (status != NX_SUCCESS) { printf("HTTPS web server create failed, error: %x\n", status); return; } #ifdef NX_WEB_HTTPS_ENABLE /* Initialize device certificate (used for all sessions in HTTPS server). */ memset(&certificate, 0, sizeof(certificate)); nx_secure_x509_certificate_initialize(&certificate, test_device_cert_der, (USHORT)test_device_cert_der_len, NX_NULL, 0, test_device_cert_key_der, (USHORT)test_device_cert_key_der_len, NX_SECURE_X509_KEY_TYPE_RSA_PKCS1_DER); /* Setup TLS session data for the TCP server. */ status = nx_web_http_server_secure_configure(&my_server, &nx_crypto_tls_ciphers, crypto_metadata_server, sizeof(crypto_metadata_server), tls_packet_buffer, sizeof(tls_packet_buffer), &certificate, NX_NULL, 0, NX_NULL, 0, NX_NULL, 0); if (status != NX_SUCCESS) { printf("HTTPS web server TLS configuration failed, error: %x\n", status); return; } #endif /* Start an HTTPS Server with TLS. */ status = nx_web_http_server_start(&my_server); if (status != NX_SUCCESS) { printf("HTTPS web server start failed, error: %x\n", status); return; } /* HTTP server ready to take requests! */ /* Let the IP thread execute. */ tx_thread_sleep(NX_IP_PERIODIC_RATE); /* Main application loop. Requests are handled in the request callback. */ while(1) { tx_thread_sleep(NX_IP_PERIODIC_RATE); } } #endif /* NX_DISABLE_IPV4 */