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Merge pull request #10602 from tymoteuszblochmobica/dns 

Runtime DNS server addition implement
pull/10632/head
Martin Kojtal 2019-05-22 08:51:54 +01:00 committed by GitHub
parent 4cf96b8d80 cdd31a5fc7
commit 06cf7871b9
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 42 additions and 1 deletions
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33
features/lwipstack/LWIPStack.cpp
View File

@ -198,6 +198,39 @@ nsapi_error_t LWIP::get_dns_server(int index, SocketAddress *address, const char
return NSAPI_ERROR_NO_ADDRESS;
}
nsapi_error_t LWIP::add_dns_server(const SocketAddress &address, const char *interface_name)
{
int index;
nsapi_addr_t addr = address.get_addr();
const ip_addr_t *ip_addr_move;
ip_addr_t ip_addr;
convert_mbed_addr_to_lwip(&ip_addr, &addr);
if (ip_addr_isany(&ip_addr)) {
return NSAPI_ERROR_NO_ADDRESS;
}
if (interface_name == NULL) {
for (index = DNS_MAX_SERVERS - 1; index > 0; index--) {
ip_addr_move = dns_getserver(index - 1, NULL);
if (!ip_addr_isany(ip_addr_move)) {
dns_setserver(index, ip_addr_move, NULL);
}
}
dns_setserver(0, &ip_addr, NULL);
} else {
for (index = DNS_MAX_SERVERS - 1; index > 0; index--) {
ip_addr_move = dns_get_interface_server(index - 1, interface_name);
if (!ip_addr_isany(ip_addr_move)) {
dns_add_interface_server(index, interface_name, ip_addr_move);
}
}
dns_add_interface_server(0, interface_name, &ip_addr);
}
return NSAPI_ERROR_OK;
}
void LWIP::tcpip_thread_callback(void *ptr)
{
lwip_callback *cb = static_cast<lwip_callback *>(ptr);

8
features/lwipstack/LWIPStack.h
View File

@ -272,6 +272,14 @@ public:
*/
virtual nsapi_error_t get_dns_server(int index, SocketAddress *address, const char *interface_name);
/** Add a domain name server to list of servers to query
*
* @param address Destination for the host address
* @param interface_name Network interface name
* @return NSAPI_ERROR_OK on success, negative error code on failure
*/
virtual nsapi_error_t add_dns_server(const SocketAddress &address, const char *interface_name);
/** Get the local IP address
*
* @return Null-terminated representation of the local IP address

2
features/lwipstack/lwip/src/core/lwip_dns.c
View File

@ -487,7 +487,7 @@ dns_get_interface_server(u8_t numdns, const char *interface_name)
{
struct dns_server_interface *interface_server;
if (numdns < DNS_MAX_SERVERS) {
if (numdns >= DNS_MAX_SERVERS) {
return IP_ADDR_ANY;
}