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emulation on host: fix binding from a particular interface (#7372)

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allows to effectively use virtual interfaces (ifconfig eth0:1) with a different IP address
This commit is contained in:
david gauchard
2020-06-13 14:04:28 +02:00
committed by GitHub
parent a70e834d1e
commit 89d0c78703
5 changed files with 27 additions and 15 deletions
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31
tests/host/common/user_interface.cpp
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@ -117,41 +117,54 @@ void wifi_fpm_set_sleep_type (sleep_type_t type)
uint32_t global_ipv4_netfmt = 0; // global binding
netif netif0;
uint32_t global_source_address = INADDR_ANY;
bool wifi_get_ip_info (uint8 if_index, struct ip_info *info)
{
// emulate wifi_get_ip_info()
// ignore if_index
// use global option -i (host_interface) to select bound interface/address
struct ifaddrs * ifAddrStruct = NULL, * ifa = NULL;
uint32_t ipv4 = lwip_htonl(0x7f000001);
uint32_t mask = lwip_htonl(0xff000000);
global_source_address = INADDR_ANY; // =0
if (getifaddrs(&ifAddrStruct) != 0)
{
perror("getifaddrs");
exit(EXIT_FAILURE);
}
if (host_interface)
mockverbose("host: looking for interface '%s':\n", host_interface);
else
mockverbose("host: looking the first for non-local IPv4 interface:\n");
for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next)
{
mockverbose("host: interface: %s", ifa->ifa_name);
if ( ifa->ifa_addr
&& ifa->ifa_addr->sa_family == AF_INET // ip_info is IPv4 only
)
{
if (lwip_ntohl(*(uint32_t*)&((struct sockaddr_in*) ifa->ifa_netmask)->sin_addr) != 0xff000000)
auto test_ipv4 = lwip_ntohl(*(uint32_t*)&((struct sockaddr_in*)ifa->ifa_addr)->sin_addr);
mockverbose(" IPV4 (0x%08lx)", test_ipv4);
if ((test_ipv4 & 0xff000000) == 0x7f000000)
// 127./8
mockverbose(" (local, ignored)");
else
{
if (ipv4 == lwip_htonl(0x7f000001))
if (!host_interface || (host_interface && strcmp(ifa->ifa_name, host_interface) == 0))
{
// take the first by default
ipv4 = *(uint32_t*)&((struct sockaddr_in*)ifa->ifa_addr)->sin_addr;
mask = *(uint32_t*)&((struct sockaddr_in*)ifa->ifa_netmask)->sin_addr;
}
if (host_interface && strcmp(ifa->ifa_name, host_interface) == 0)
{
// .. or the one specified by user on cmdline
// use the first non-local interface, or, if specified, the one selected by user on cmdline
ipv4 = *(uint32_t*)&((struct sockaddr_in*)ifa->ifa_addr)->sin_addr;
mask = *(uint32_t*)&((struct sockaddr_in*)ifa->ifa_netmask)->sin_addr;
mockverbose(" (selected)\n");
global_source_address = ntohl(ipv4);
break;
}
}
}
mockverbose("\n");
}
if (ifAddrStruct != NULL)
freeifaddrs(ifAddrStruct);