esp-idf/examples/common_components/protocol_examples_common/addr_from_stdin.c

69 lines
2.2 KiB
C

#include <string.h>
#include "esp_system.h"
#include "esp_log.h"
#include "esp_netif.h"
#include "protocol_examples_common.h"
#include "lwip/sockets.h"
#include <lwip/netdb.h>
#include <arpa/inet.h>
#define HOST_IP_SIZE 128
esp_err_t get_addr_from_stdin(int port, int sock_type, int *ip_protocol, int *addr_family, struct sockaddr_storage *dest_addr)
{
char host_ip[HOST_IP_SIZE];
int len;
static bool already_init = false;
// this function could be called multiple times -> make sure UART init runs only once
if (!already_init) {
example_configure_stdin_stdout();
already_init = true;
}
// ignore empty or LF only string (could receive from DUT class)
do {
fgets(host_ip, HOST_IP_SIZE, stdin);
len = strlen(host_ip);
} while (len<=1 && host_ip[0] == '\n');
host_ip[len - 1] = '\0';
struct addrinfo hints, *addr_list, *cur;
memset( &hints, 0, sizeof( hints ) );
// run getaddrinfo() to decide on the IP protocol
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = sock_type;
hints.ai_protocol = IPPROTO_TCP;
if( getaddrinfo( host_ip, NULL, &hints, &addr_list ) != 0 ) {
return ESP_FAIL;
}
for( cur = addr_list; cur != NULL; cur = cur->ai_next ) {
memcpy(dest_addr, cur->ai_addr, sizeof(*dest_addr));
if (cur->ai_family == AF_INET) {
*ip_protocol = IPPROTO_IP;
*addr_family = AF_INET;
// add port number and return on first IPv4 match
((struct sockaddr_in*)dest_addr)->sin_port = htons(port);
freeaddrinfo( addr_list );
return ESP_OK;
}
#if CONFIG_LWIP_IPV6
else if (cur->ai_family == AF_INET6) {
*ip_protocol = IPPROTO_IPV6;
*addr_family = AF_INET6;
// add port and interface number and return on first IPv6 match
((struct sockaddr_in6*)dest_addr)->sin6_port = htons(port);
((struct sockaddr_in6*)dest_addr)->sin6_scope_id = esp_netif_get_netif_impl_index(EXAMPLE_INTERFACE);
freeaddrinfo( addr_list );
return ESP_OK;
}
#endif
}
// no match found
freeaddrinfo( addr_list );
return ESP_FAIL;
}