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mbedtls: mbedlts_net_bind should bind on all interfaces with bind_ip == NULL

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As per mbedtls documentation. This is different to lwip_getaddrinfo()
which uses loopback for a NULL address.

Fixes bug mentioned here https://groups.google.com/forum/#!topic/esp-open-rtos/3KH5TZSTMUw
This commit is contained in:
Angus Gratton 2016-02-09 10:54:57 +11:00
parent e2759f9e7d
commit 3dfa2272cc
2 changed files with 34 additions and 10 deletions
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2
examples/tls_server/tls_server.c
View file

@ -158,7 +158,7 @@ void tls_server_task(void *pvParameters)
/*
* 1. Start the connection
*/
ret = mbedtls_net_bind(&server_ctx, "0.0.0.0", PORT, MBEDTLS_NET_PROTO_TCP);
ret = mbedtls_net_bind(&server_ctx, NULL, PORT, MBEDTLS_NET_PROTO_TCP);
if(ret != 0)
{
printf(" failed\n ! mbedtls_net_bind returned %d\n\n", ret);

42
extras/mbedtls/net_lwip.c
View file

@ -129,19 +129,41 @@ int mbedtls_net_connect( mbedtls_net_context *ctx, const char *host, const char
int mbedtls_net_bind( mbedtls_net_context *ctx, const char *bind_ip, const char *port, int proto )
{
int n, ret;
struct addrinfo hints, *addr_list, *cur;
struct addrinfo *addr_list, *cur;
/* Only request desired protocol */
const struct addrinfo hints = {
.ai_family = AF_UNSPEC,
.ai_socktype = (proto == MBEDTLS_NET_PROTO_UDP ? SOCK_DGRAM : SOCK_STREAM),
.ai_protocol = (proto == MBEDTLS_NET_PROTO_UDP ? IPPROTO_UDP : IPPROTO_TCP),
};
struct sockaddr_in sockaddr_ipaddr_any = {
.sin_len = sizeof(struct sockaddr_in),
.sin_family = AF_INET,
.sin_port = htons(atoi(port)),
.sin_addr = { IPADDR_ANY },
};
struct addrinfo all_interfaces_addr = {
.ai_family = AF_INET,
.ai_socktype = hints.ai_socktype,
.ai_protocol = hints.ai_protocol,
.ai_addrlen = sizeof(struct sockaddr_in),
.ai_addr = (struct sockaddr *)&sockaddr_ipaddr_any,
};
if( ( ret = net_prepare() ) != 0 )
return( ret );
/* Bind to IPv6 and/or IPv4, but only in the desired protocol */
memset( &hints, 0, sizeof( hints ) );
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = proto == MBEDTLS_NET_PROTO_UDP ? SOCK_DGRAM : SOCK_STREAM;
hints.ai_protocol = proto == MBEDTLS_NET_PROTO_UDP ? IPPROTO_UDP : IPPROTO_TCP;
if( getaddrinfo( bind_ip, port, &hints, &addr_list ) != 0 )
if(bind_ip == NULL) {
/* mbedTLS docs specify bind_ip == NULL means all interfaces, but lwip getaddrinfo() assumes NULL
means localhost. So we swap in a precreated IPADDR_ANY addrinfo result here. */
addr_list = &all_interfaces_addr;
}
else if( getaddrinfo( bind_ip, port, &hints, &addr_list ) != 0 ) {
return( MBEDTLS_ERR_NET_UNKNOWN_HOST );
}
/* Try the sockaddrs until a binding succeeds */
ret = MBEDTLS_ERR_NET_UNKNOWN_HOST;
@ -187,7 +209,9 @@ int mbedtls_net_bind( mbedtls_net_context *ctx, const char *bind_ip, const char
break;
}
freeaddrinfo( addr_list );
if(bind_ip != NULL) {
freeaddrinfo( addr_list );
}
return( ret );