fix indents

This commit is contained in:
Arthur Lu 2024-03-04 21:07:18 -08:00
parent 4b2b56dd79
commit 33aaa589f6
3 changed files with 233 additions and 233 deletions

View File

@ -35,7 +35,7 @@ int64_t pw_sw_off_async (alarm_id_t id, void * user_data) {
// hander fn to read from the power state // hander fn to read from the power state
bool update_current_state_async (repeating_timer_t * rt) { bool update_current_state_async (repeating_timer_t * rt) {
current_state.voltage = adc_read() * 3.3f / (1 << 12); current_state.voltage = adc_read() * 3.3f / (1 << 12);
current_state.tempC = 27.0f - (current_state.voltage - 0.706f) / 0.001721f; current_state.tempC = 27.0f - (current_state.voltage - 0.706f) / 0.001721f;
current_state.power_state = gpio_get(PW_STATE_PIN) ^ PW_STATE_INV; current_state.power_state = gpio_get(PW_STATE_PIN) ^ PW_STATE_INV;
return true; // continue repeating alarm return true; // continue repeating alarm
} }

View File

@ -13,300 +13,300 @@
extern CURRENT_STATE_T current_state; extern CURRENT_STATE_T current_state;
typedef struct TCP_SERVER_T_ { typedef struct TCP_SERVER_T_ {
struct tcp_pcb * server_pcb; struct tcp_pcb * server_pcb;
bool complete; bool complete;
ip_addr_t gw; ip_addr_t gw;
} TCP_SERVER_T; } TCP_SERVER_T;
typedef struct TCP_CONNECT_STATE_T_ { typedef struct TCP_CONNECT_STATE_T_ {
struct tcp_pcb * pcb; struct tcp_pcb * pcb;
int sent_len; int sent_len;
char method[8]; char method[8];
char request[128]; char request[128];
char params[128]; char params[128];
char protocol[8]; char protocol[8];
char headers[1024]; char headers[1024];
char body[128]; char body[128];
char result[128]; char result[128];
int header_len; int header_len;
int result_len; int result_len;
ip_addr_t * gw; ip_addr_t * gw;
} TCP_CONNECT_STATE_T; } TCP_CONNECT_STATE_T;
TCP_SERVER_T * http_serv_state = NULL; TCP_SERVER_T * http_serv_state = NULL;
static err_t tcp_close_client_connection(TCP_CONNECT_STATE_T * con_state, struct tcp_pcb * client_pcb, err_t close_err) { static err_t tcp_close_client_connection(TCP_CONNECT_STATE_T * con_state, struct tcp_pcb * client_pcb, err_t close_err) {
if (client_pcb) { if (client_pcb) {
assert(con_state && con_state->pcb == client_pcb); assert(con_state && con_state->pcb == client_pcb);
tcp_arg(client_pcb, NULL); tcp_arg(client_pcb, NULL);
tcp_poll(client_pcb, NULL, 0); tcp_poll(client_pcb, NULL, 0);
tcp_sent(client_pcb, NULL); tcp_sent(client_pcb, NULL);
tcp_recv(client_pcb, NULL); tcp_recv(client_pcb, NULL);
tcp_err(client_pcb, NULL); tcp_err(client_pcb, NULL);
err_t err = tcp_close(client_pcb); err_t err = tcp_close(client_pcb);
if (err != ERR_OK) { if (err != ERR_OK) {
DEBUG_printf("[HTTP] [ERR] Close failed %d, calling abort\n", err); DEBUG_printf("[HTTP] [ERR] Close failed %d, calling abort\n", err);
tcp_abort(client_pcb); tcp_abort(client_pcb);
close_err = ERR_ABRT; close_err = ERR_ABRT;
} }
if (con_state) { if (con_state) {
free(con_state); free(con_state);
} }
} }
return close_err; return close_err;
} }
static void tcp_server_close(TCP_SERVER_T * state) { static void tcp_server_close(TCP_SERVER_T * state) {
if (state->server_pcb) { if (state->server_pcb) {
tcp_arg(state->server_pcb, NULL); tcp_arg(state->server_pcb, NULL);
tcp_close(state->server_pcb); tcp_close(state->server_pcb);
state->server_pcb = NULL; state->server_pcb = NULL;
} }
} }
static err_t tcp_server_sent(void * arg, struct tcp_pcb * pcb, u16_t len) { static err_t tcp_server_sent(void * arg, struct tcp_pcb * pcb, u16_t len) {
TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg; TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg;
DEBUG_printf("[HTTP] [OK ] Sent %u\n", len); DEBUG_printf("[HTTP] [OK ] Sent %u\n", len);
con_state->sent_len += len; con_state->sent_len += len;
if (con_state->sent_len >= con_state->header_len + con_state->result_len) { if (con_state->sent_len >= con_state->header_len + con_state->result_len) {
DEBUG_printf("[HTTP] [OK ] Send done\n"); DEBUG_printf("[HTTP] [OK ] Send done\n");
return tcp_close_client_connection(con_state, pcb, ERR_OK); return tcp_close_client_connection(con_state, pcb, ERR_OK);
} }
return ERR_OK; return ERR_OK;
} }
static int handle_status_get (const char * request, const char * params, const char * body, char * result, size_t max_result_len) { static int handle_status_get (const char * request, const char * params, const char * body, char * result, size_t max_result_len) {
return snprintf(result, max_result_len, "{volt: %f, temp: %f, power: %d}", current_state.voltage, current_state.tempC, current_state.power_state); return snprintf(result, max_result_len, "{volt: %f, temp: %f, power: %d}", current_state.voltage, current_state.tempC, current_state.power_state);
} }
static int handle_power_post (const char * request, const char * params, const char * body, char * result, size_t max_result_len) { static int handle_power_post (const char * request, const char * params, const char * body, char * result, size_t max_result_len) {
if (strstr(body, "requested_state")) { if (strstr(body, "requested_state")) {
int requested_power_state_int; int requested_power_state_int;
int led_param = sscanf(body, "requested_state=%d", &requested_power_state_int); int led_param = sscanf(body, "requested_state=%d", &requested_power_state_int);
if (led_param) { if (led_param) {
if (requested_power_state_int == 0 || requested_power_state_int == 1) { if (requested_power_state_int == 0 || requested_power_state_int == 1) {
bmc_power_handler((bool) requested_power_state_int); bmc_power_handler((bool) requested_power_state_int);
return snprintf(result, max_result_len, "{}"); return snprintf(result, max_result_len, "{}");
} }
else { else {
return snprintf(result, max_result_len, "{error: true, description: \"invalid requested state, must be 0 or 1\"}"); return snprintf(result, max_result_len, "{error: true, description: \"invalid requested state, must be 0 or 1\"}");
} }
} }
else { else {
return snprintf(result, max_result_len, "{error: true, description: \"invalid requested state, must be 0 or 1\"}"); return snprintf(result, max_result_len, "{error: true, description: \"invalid requested state, must be 0 or 1\"}");
} }
} }
else { else {
return snprintf(result, max_result_len, "{error: true, description: \"missing required parameter requested_state\"}"); return snprintf(result, max_result_len, "{error: true, description: \"missing required parameter requested_state\"}");
} }
} }
int parse_content (struct pbuf * p, TCP_CONNECT_STATE_T * con_state) { int parse_content (struct pbuf * p, TCP_CONNECT_STATE_T * con_state) {
char content[2048] = {0}; char content[2048] = {0};
pbuf_copy_partial(p, &content, 2048 - 1, 0); pbuf_copy_partial(p, &content, 2048 - 1, 0);
char * headers_start = content; // First header line containing method request?params HTTP/protocol char * headers_start = content; // First header line containing method request?params HTTP/protocol
char * headers_other = strstr(content, "\r\n") + 2; // remaining headers follow the first line char * headers_other = strstr(content, "\r\n") + 2; // remaining headers follow the first line
char * body_start = strstr(content, "\r\n\r\n") + 4; // body begins at the end of headers char * body_start = strstr(content, "\r\n\r\n") + 4; // body begins at the end of headers
*(headers_other - 2) = 0; *(headers_other - 2) = 0;
*(body_start - 4) = 0; *(body_start - 4) = 0;
char request_params_comb[256]; char request_params_comb[256];
if (sscanf(headers_start, "%s %s HTTP/%s", con_state->method, request_params_comb, con_state->protocol) != 3) { if (sscanf(headers_start, "%s %s HTTP/%s", con_state->method, request_params_comb, con_state->protocol) != 3) {
return 0; return 0;
} }
char * params = strchr(request_params_comb, '?'); char * params = strchr(request_params_comb, '?');
if (params) { if (params) {
*params++ = 0; *params++ = 0;
strcpy(con_state->request, request_params_comb); strcpy(con_state->request, request_params_comb);
strcpy(con_state->params, params); strcpy(con_state->params, params);
} }
else { else {
strcpy(con_state->request, request_params_comb); strcpy(con_state->request, request_params_comb);
} }
strcpy(con_state->headers, headers_other); strcpy(con_state->headers, headers_other);
strcpy(con_state->body, body_start); strcpy(con_state->body, body_start);
return 1; return 1;
} }
int send_response (TCP_CONNECT_STATE_T * con_state, struct tcp_pcb * pcb) { int send_response (TCP_CONNECT_STATE_T * con_state, struct tcp_pcb * pcb) {
// Check result buffer size // Check result buffer size
if (con_state->result_len > sizeof(con_state->result) - 1) { if (con_state->result_len > sizeof(con_state->result) - 1) {
DEBUG_printf("[HTTP] [ERR] Too much result data %d\n", con_state->result_len); DEBUG_printf("[HTTP] [ERR] Too much result data %d\n", con_state->result_len);
return tcp_close_client_connection(con_state, pcb, ERR_CLSD); return tcp_close_client_connection(con_state, pcb, ERR_CLSD);
} }
// Check header buffer size // Check header buffer size
if (con_state->header_len > sizeof(con_state->headers) - 1) { if (con_state->header_len > sizeof(con_state->headers) - 1) {
DEBUG_printf("[HTTP] [ERR] Too much header data %d\n", con_state->header_len); DEBUG_printf("[HTTP] [ERR] Too much header data %d\n", con_state->header_len);
return tcp_close_client_connection(con_state, pcb, ERR_CLSD); return tcp_close_client_connection(con_state, pcb, ERR_CLSD);
} }
// Send the headers to the client // Send the headers to the client
con_state->sent_len = 0; con_state->sent_len = 0;
err_t err = tcp_write(pcb, con_state->headers, con_state->header_len, 0); err_t err = tcp_write(pcb, con_state->headers, con_state->header_len, 0);
if (err != ERR_OK) { if (err != ERR_OK) {
DEBUG_printf("[HTTP] [ERR] Failed to write header data %d\n", err); DEBUG_printf("[HTTP] [ERR] Failed to write header data %d\n", err);
return tcp_close_client_connection(con_state, pcb, err); return tcp_close_client_connection(con_state, pcb, err);
} }
// Send the body to the client // Send the body to the client
if (con_state->result_len) { if (con_state->result_len) {
err = tcp_write(pcb, con_state->result, con_state->result_len, 0); err = tcp_write(pcb, con_state->result, con_state->result_len, 0);
if (err != ERR_OK) { if (err != ERR_OK) {
DEBUG_printf("[HTTP] [ERR] Failed to write result data %d\n", err); DEBUG_printf("[HTTP] [ERR] Failed to write result data %d\n", err);
return tcp_close_client_connection(con_state, pcb, err); return tcp_close_client_connection(con_state, pcb, err);
} }
} }
return 0; return 0;
} }
err_t tcp_server_recv(void * arg, struct tcp_pcb * pcb, struct pbuf * p, err_t err) { err_t tcp_server_recv(void * arg, struct tcp_pcb * pcb, struct pbuf * p, err_t err) {
TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg; TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg;
if (!p) { if (!p) {
DEBUG_printf("[HTTP] [ERR] Client connection closed\n"); DEBUG_printf("[HTTP] [ERR] Client connection closed\n");
return tcp_close_client_connection(con_state, pcb, ERR_OK); return tcp_close_client_connection(con_state, pcb, ERR_OK);
} }
assert(con_state && con_state->pcb == pcb); assert(con_state && con_state->pcb == pcb);
if (p->tot_len > 0) { if (p->tot_len > 0) {
DEBUG_printf("[HTTP] [OK ] Server recieved %d err %d\n", p->tot_len, err); DEBUG_printf("[HTTP] [OK ] Server recieved %d err %d\n", p->tot_len, err);
// Copy the request into the buffer // Copy the request into the buffer
if (!parse_content(p, con_state)) { if (!parse_content(p, con_state)) {
DEBUG_printf("[HTTP] [ERR] Failed to parse header\n"); DEBUG_printf("[HTTP] [ERR] Failed to parse header\n");
return tcp_close_client_connection(con_state, pcb, ERR_OK); return tcp_close_client_connection(con_state, pcb, ERR_OK);
} }
// print request // print request
DEBUG_printf("[HTTP] [OK ] Request: %s %s?%s %s\n", con_state->method, con_state->request, con_state->params, con_state->body); DEBUG_printf("[HTTP] [OK ] Request: %s %s?%s %s\n", con_state->method, con_state->request, con_state->params, con_state->body);
int response_code; int response_code;
// parse request depending on method and request // parse request depending on method and request
if (strncmp(con_state->method, HTTP_GET, sizeof(HTTP_GET) - 1) == 0 && strncmp(con_state->request, "/status", sizeof("/status") - 1) == 0) { if (strncmp(con_state->method, HTTP_GET, sizeof(HTTP_GET) - 1) == 0 && strncmp(con_state->request, "/status", sizeof("/status") - 1) == 0) {
con_state->result_len = handle_status_get(con_state->request, con_state->params, con_state->body, con_state->result, sizeof(con_state->result)); con_state->result_len = handle_status_get(con_state->request, con_state->params, con_state->body, con_state->result, sizeof(con_state->result));
response_code = 200; response_code = 200;
con_state->header_len = snprintf(con_state->headers, sizeof(con_state->headers), HTTP_RESPONSE_HEADER, response_code, con_state->result_len); con_state->header_len = snprintf(con_state->headers, sizeof(con_state->headers), HTTP_RESPONSE_HEADER, response_code, con_state->result_len);
} }
else if (strncmp(con_state->method, HTTP_POST, sizeof(HTTP_POST) - 1) == 0 && strncmp(con_state->request, "/power", sizeof("/power") - 1) == 0) { else if (strncmp(con_state->method, HTTP_POST, sizeof(HTTP_POST) - 1) == 0 && strncmp(con_state->request, "/power", sizeof("/power") - 1) == 0) {
con_state->result_len = handle_power_post(con_state->request, con_state->params, con_state->body, con_state->result, sizeof(con_state->result)); con_state->result_len = handle_power_post(con_state->request, con_state->params, con_state->body, con_state->result, sizeof(con_state->result));
response_code = 200; response_code = 200;
con_state->header_len = snprintf(con_state->headers, sizeof(con_state->headers), HTTP_RESPONSE_HEADER, response_code, con_state->result_len); con_state->header_len = snprintf(con_state->headers, sizeof(con_state->headers), HTTP_RESPONSE_HEADER, response_code, con_state->result_len);
} }
else { else {
con_state->result_len = 0; con_state->result_len = 0;
response_code = 501; response_code = 501;
con_state->header_len = snprintf(con_state->headers, sizeof(con_state->headers), HTTP_RESPONSE_HEADER, response_code, con_state->result_len); con_state->header_len = snprintf(con_state->headers, sizeof(con_state->headers), HTTP_RESPONSE_HEADER, response_code, con_state->result_len);
} }
// print result // print result
DEBUG_printf("[HTTP] [OK ] Result: %d %s\n", response_code, con_state->result); DEBUG_printf("[HTTP] [OK ] Result: %d %s\n", response_code, con_state->result);
if (send_response(con_state, pcb)) { if (send_response(con_state, pcb)) {
DEBUG_printf("[HTTP] [ERR] Failure in send\n"); DEBUG_printf("[HTTP] [ERR] Failure in send\n");
} }
tcp_recved(pcb, p->tot_len); tcp_recved(pcb, p->tot_len);
} }
pbuf_free(p); pbuf_free(p);
return ERR_OK; return ERR_OK;
} }
static err_t tcp_server_poll(void * arg, struct tcp_pcb * pcb) { static err_t tcp_server_poll(void * arg, struct tcp_pcb * pcb) {
TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg; TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg;
return tcp_close_client_connection(con_state, pcb, ERR_OK); // Just disconnect clent? return tcp_close_client_connection(con_state, pcb, ERR_OK); // Just disconnect clent?
} }
static void tcp_server_err(void * arg, err_t err) { static void tcp_server_err(void * arg, err_t err) {
TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg; TCP_CONNECT_STATE_T * con_state = (TCP_CONNECT_STATE_T *)arg;
if (err != ERR_ABRT) { if (err != ERR_ABRT) {
DEBUG_printf("[HTTP] [ERR] Error %d\n", err); DEBUG_printf("[HTTP] [ERR] Error %d\n", err);
tcp_close_client_connection(con_state, con_state->pcb, err); tcp_close_client_connection(con_state, con_state->pcb, err);
} }
} }
static err_t tcp_server_accept(void * arg, struct tcp_pcb * client_pcb, err_t err) { static err_t tcp_server_accept(void * arg, struct tcp_pcb * client_pcb, err_t err) {
TCP_SERVER_T * state = (TCP_SERVER_T *)arg; TCP_SERVER_T * state = (TCP_SERVER_T *)arg;
if (err != ERR_OK || client_pcb == NULL) { if (err != ERR_OK || client_pcb == NULL) {
DEBUG_printf("[HTTP] [ERR] Failure accepting client connection\n"); DEBUG_printf("[HTTP] [ERR] Failure accepting client connection\n");
return ERR_VAL; return ERR_VAL;
} }
DEBUG_printf("[HTTP] [OK ] Client connected\n"); DEBUG_printf("[HTTP] [OK ] Client connected\n");
// Create the state for the connection // Create the state for the connection
TCP_CONNECT_STATE_T * con_state = calloc(1, sizeof(TCP_CONNECT_STATE_T)); TCP_CONNECT_STATE_T * con_state = calloc(1, sizeof(TCP_CONNECT_STATE_T));
if (!con_state) { if (!con_state) {
DEBUG_printf("[HTTP] [ERR] Failed to allocate connect state\n"); DEBUG_printf("[HTTP] [ERR] Failed to allocate connect state\n");
return ERR_MEM; return ERR_MEM;
} }
con_state->pcb = client_pcb; // for checking con_state->pcb = client_pcb; // for checking
con_state->gw = &state->gw; con_state->gw = &state->gw;
// setup connection to client // setup connection to client
tcp_arg(client_pcb, con_state); tcp_arg(client_pcb, con_state);
tcp_sent(client_pcb, tcp_server_sent); tcp_sent(client_pcb, tcp_server_sent);
tcp_recv(client_pcb, tcp_server_recv); tcp_recv(client_pcb, tcp_server_recv);
tcp_poll(client_pcb, tcp_server_poll, POLL_TIME_S * 2); tcp_poll(client_pcb, tcp_server_poll, POLL_TIME_S * 2);
tcp_err(client_pcb, tcp_server_err); tcp_err(client_pcb, tcp_server_err);
return ERR_OK; return ERR_OK;
} }
static bool tcp_server_open(void * arg) { static bool tcp_server_open(void * arg) {
TCP_SERVER_T * state = (TCP_SERVER_T *)arg; TCP_SERVER_T * state = (TCP_SERVER_T *)arg;
DEBUG_printf("[HTTP] [OK ] Starting server at %s on port %d\n", ip4addr_ntoa(netif_ip4_addr(netif_list)), TCP_PORT); DEBUG_printf("[HTTP] [OK ] Starting server at %s on port %d\n", ip4addr_ntoa(netif_ip4_addr(netif_list)), TCP_PORT);
struct tcp_pcb * pcb = tcp_new_ip_type(IPADDR_TYPE_ANY); struct tcp_pcb * pcb = tcp_new_ip_type(IPADDR_TYPE_ANY);
if (!pcb) { if (!pcb) {
DEBUG_printf("[HTTP] [ERR] Failed to create pcb\n"); DEBUG_printf("[HTTP] [ERR] Failed to create pcb\n");
return false; return false;
} }
err_t err = tcp_bind(pcb, IP_ANY_TYPE, TCP_PORT); err_t err = tcp_bind(pcb, IP_ANY_TYPE, TCP_PORT);
if (err) { if (err) {
DEBUG_printf("[HTTP] [ERR] Failed to bind to port %d\n", TCP_PORT); DEBUG_printf("[HTTP] [ERR] Failed to bind to port %d\n", TCP_PORT);
return false; return false;
} }
state->server_pcb = tcp_listen_with_backlog(pcb, 1); state->server_pcb = tcp_listen_with_backlog(pcb, 1);
if (!state->server_pcb) { if (!state->server_pcb) {
DEBUG_printf("[HTTP] [ERR] Failed to listen on port %d\n", TCP_PORT); DEBUG_printf("[HTTP] [ERR] Failed to listen on port %d\n", TCP_PORT);
if (pcb) { if (pcb) {
tcp_close(pcb); tcp_close(pcb);
} }
return false; return false;
} }
tcp_arg(state->server_pcb, state); tcp_arg(state->server_pcb, state);
tcp_accept(state->server_pcb, tcp_server_accept); tcp_accept(state->server_pcb, tcp_server_accept);
return true; return true;
} }
int http_serv_init () { int http_serv_init () {
http_serv_state = calloc(1, sizeof(TCP_SERVER_T)); http_serv_state = calloc(1, sizeof(TCP_SERVER_T));
if (!http_serv_state) { if (!http_serv_state) {
DEBUG_printf("[HTTP] [ERR] Failed to allocate state\n"); DEBUG_printf("[HTTP] [ERR] Failed to allocate state\n");
return 1; return 1;
} }
if (!tcp_server_open(http_serv_state)) { if (!tcp_server_open(http_serv_state)) {
DEBUG_printf("[HTTP] [ERR] Failed to open server\n"); DEBUG_printf("[HTTP] [ERR] Failed to open server\n");
return 1; return 1;
} }
DEBUG_printf("[HTTP] [OK ] Sucessfully initialized http server\n"); DEBUG_printf("[HTTP] [OK ] Sucessfully initialized http server\n");
return 0; return 0;
} }
int http_serv_deinit () { int http_serv_deinit () {
tcp_server_close(http_serv_state); tcp_server_close(http_serv_state);
free(http_serv_state); free(http_serv_state);
http_serv_state = NULL; http_serv_state = NULL;
return 0; return 0;
} }
#endif #endif

18
main.c
View File

@ -7,16 +7,16 @@
#include "secret.h" #include "secret.h"
int main() { int main() {
stdio_init_all(); stdio_init_all();
if (cyw43_arch_init()) { if (cyw43_arch_init()) {
DEBUG_printf("[INIT] [ERR] Failed to initialise cyw43\n"); DEBUG_printf("[INIT] [ERR] Failed to initialise cyw43\n");
return 1; return 1;
} }
cyw43_arch_enable_sta_mode(); cyw43_arch_enable_sta_mode();
if (cyw43_arch_wifi_connect_timeout_ms(WIFI_SSID, WIFI_PASS, CYW43_AUTH_WPA2_AES_PSK, 30000)){ if (cyw43_arch_wifi_connect_timeout_ms(WIFI_SSID, WIFI_PASS, CYW43_AUTH_WPA2_AES_PSK, 30000)){
DEBUG_printf("[INIT] [ERR] Wi-Fi failed to connect\n"); DEBUG_printf("[INIT] [ERR] Wi-Fi failed to connect\n");
return -1; return -1;
} }
@ -30,12 +30,12 @@ int main() {
// set LED to on to indicate it has connected and initialized // set LED to on to indicate it has connected and initialized
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1); cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
while (!http_serv_state->complete) { while (!http_serv_state->complete) {
sleep_ms(1000); sleep_ms(1000);
} }
bmc_handler_deinit(); bmc_handler_deinit();
http_serv_deinit(); http_serv_deinit();
cyw43_arch_deinit(); cyw43_arch_deinit();
return 0; return 0;
} }