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Windows: use ANSI interface names instead of net%d aliases

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This commit is contained in:
Joseph C. Lehner 2020-08-17 17:43:48 +02:00
parent 99f50229d8
commit 3bf364af06
1 changed files with 41 additions and 30 deletions
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71
ethsock.c
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@ -27,7 +27,6 @@
#include "nmrpd.h"
#if defined(NMRPFLASH_WINDOWS)
#define NMRPFLASH_NETALIAS_PREFIX "net"
#define WPCAP
#include <pcap.h>
#else
@ -425,42 +424,54 @@ static bool intf_get_info(const char *intf, uint8_t *hwaddr, DWORD *index)
return found;
}
static const char *intf_alias_to_wpcap(const char *intf)
static const char *intf_name_to_wpcap(const char *intf)
{
static char buf[128];
pcap_if_t *devs, *dev;
unsigned i = 0, dev_num = 0;
if (intf[0] == '\\') {
return intf;
} else if (sscanf(intf, NMRPFLASH_NETALIAS_PREFIX "%u", &dev_num) != 1) {
fprintf(stderr, "Invalid interface alias.\n");
return NULL;
}
if (x_pcap_findalldevs(&devs) != 0) {
return NULL;
}
do {
NET_IFINDEX index;
DWORD err;
NET_LUID luid;
GUID guid;
for (dev = devs; dev; dev = dev->next, ++i) {
if (i == dev_num) {
if (verbosity) {
printf("%s%u: %s\n", NMRPFLASH_NETALIAS_PREFIX, i, dev->name);
}
strncpy(buf, dev->name, sizeof(buf) - 1);
buf[sizeof(buf) - 1] = '\0';
index = if_nametoindex(intf);
if (!index) {
break;
}
}
pcap_freealldevs(devs);
err = ConvertInterfaceIndexToLuid(index, &luid);
if (err != NO_ERROR) {
if (verbosity) {
win_perror2("ConvertInterfaceIndexToLuid", err);
}
if (!dev) {
fprintf(stderr, "Interface alias not found.\n");
return NULL;
}
break;
}
return buf;
err = ConvertInterfaceLuidToGuid(&luid, &guid);
if (err != NO_ERROR) {
if (verbosity) {
win_perror2("ConvertInterfaceLuidToGuid", err);
}
}
snprintf(buf, sizeof(buf),
"\\Device\\NPF{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
guid.Data1, guid.Data2, guid.Data3,
guid.Data4[0], guid.Data4[1], guid.Data4[2],
guid.Data4[3], guid.Data4[4], guid.Data4[5],
guid.Data4[6], guid.Data4[7]);
return buf;
} while (false);
fprintf(stderr, "Invalid interface name.\n");
return NULL;
}
static const char *intf_get_pretty_name(const char *intf)
@ -516,10 +527,12 @@ bool ethsock_is_unplugged(struct ethsock *sock)
{
#ifdef NMRPFLASH_WINDOWS
MIB_IF_ROW2 row;
DWORD err;
memset(&row, 0, sizeof(row));
row.InterfaceIndex = sock->index;
DWORD err = GetIfEntry2(&row);
err = GetIfEntry2(&row);
if (err != NO_ERROR) {
win_perror2("GetIfEntry2", err);
return false;
@ -529,9 +542,6 @@ bool ethsock_is_unplugged(struct ethsock *sock)
#else
return false;
#endif
}
struct ethsock *ethsock_create(const char *intf, uint16_t protocol)
@ -543,7 +553,7 @@ struct ethsock *ethsock_create(const char *intf, uint16_t protocol)
int err;
#ifdef NMRPFLASH_WINDOWS
intf = intf_alias_to_wpcap(intf);
intf = intf_name_to_wpcap(intf);
if (!intf) {
return NULL;
}
@ -868,7 +878,8 @@ int ethsock_list_all(void)
pretty = intf_get_pretty_name(dev->name);
if (!verbosity) {
printf("%s%-2u", NMRPFLASH_NETALIAS_PREFIX, dev_num);
char buf[IF_MAX_STRING_SIZE];
printf("%-15s", if_indextoname(dev->index, buf));
} else {
printf("%s", dev->name);
}