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(svn r15969) -Codechange: make the list of broadcast addresses virtually unlimited.

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This commit is contained in:
rubidium
2009-04-07 19:06:36 +00:00
parent fdddfd6269
commit 82f8badc07
7 changed files with 38 additions and 57 deletions
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72
src/network/core/host.cpp
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@@ -15,14 +15,12 @@
* Internal implementation for finding the broadcast IPs.
* This function is implemented multiple times for multiple targets.
* @param broadcast the list of broadcasts to write into.
* @param limit the maximum number of items to add.
*/
static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit);
static void NetworkFindBroadcastIPsInternal(NetworkAddressList *broadcast);
#if defined(PSP)
static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit) // PSP implementation
static void NetworkFindBroadcastIPsInternal(NetworkAddressList *broadcast) // PSP implementation
{
return 0;
}
#elif defined(BEOS_NET_SERVER) /* doesn't have neither getifaddrs or net/if.h */
@@ -39,27 +37,25 @@ int seek_past_header(char **pos, const char *header)
return B_OK;
}
static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit) // BEOS implementation
static void NetworkFindBroadcastIPsInternal(NetworkAddressList *broadcast) // BEOS implementation
{
int sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock < 0) {
DEBUG(net, 0, "[core] error creating socket");
return 0;
return;
}
char *output_pointer = NULL;
int output_length = _netstat(sock, &output_pointer, 1);
if (output_length < 0) {
DEBUG(net, 0, "[core] error running _netstat");
return 0;
return;
}
int index;
char **output = &output_pointer;
if (seek_past_header(output, "IP Interfaces:") == B_OK) {
while (index != limit) {
for (;;) {
uint32 n, fields, read;
uint8 i1, i2, i3, i4, j1, j2, j3, j4;
struct in_addr inaddr;
@@ -80,7 +76,7 @@ static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit)
sockaddr_storage address;
memset(&address, 0, sizeof(address));
((sockaddr_in*)&address)->sin_addr.s_addr = htonl(ip | ~netmask);
broadcast[index] = NetworkAddress(address, sizeof(sockaddr));
*broadcast->Append() = NetworkAddress(address, sizeof(sockaddr));
index++;
}
if (read < 0) {
@@ -90,47 +86,40 @@ static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit)
}
closesocket(sock);
}
return index;
}
#elif defined(HAVE_GETIFADDRS)
static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit) // GETIFADDRS implementation
static void NetworkFindBroadcastIPsInternal(NetworkAddressList *broadcast) // GETIFADDRS implementation
{
struct ifaddrs *ifap, *ifa;
if (getifaddrs(&ifap) != 0) return 0;
if (getifaddrs(&ifap) != 0) return;
int index = 0;
for (ifa = ifap; ifa != NULL && index != limit; ifa = ifa->ifa_next) {
for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
if (!(ifa->ifa_flags & IFF_BROADCAST)) continue;
if (ifa->ifa_broadaddr == NULL) continue;
if (ifa->ifa_broadaddr->sa_family != AF_INET) continue;
broadcast[index] = NetworkAddress(ifa->ifa_broadaddr, sizeof(sockaddr));
index++;
*broadcast->Append() = NetworkAddress(ifa->ifa_broadaddr, sizeof(sockaddr));
}
freeifaddrs(ifap);
return index;
}
#elif defined(WIN32)
static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit) // Win32 implementation
static void NetworkFindBroadcastIPsInternal(NetworkAddressList *broadcast) // Win32 implementation
{
SOCKET sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock == INVALID_SOCKET) return 0;
if (sock == INVALID_SOCKET) return;
DWORD len = 0;
INTERFACE_INFO *ifo = AllocaM(INTERFACE_INFO, limit);
memset(ifo, 0, limit * sizeof(*ifo));
if ((WSAIoctl(sock, SIO_GET_INTERFACE_LIST, NULL, 0, &ifo[0], limit * sizeof(*ifo), &len, NULL, NULL)) != 0) {
closesocket(sock);
return 0;
return;
}
int index = 0;
for (uint j = 0; j < len / sizeof(*ifo) && index != limit; j++) {
for (uint j = 0; j < len / sizeof(*ifo); j++) {
if (ifo[j].iiFlags & IFF_LOOPBACK) continue;
if (!(ifo[j].iiFlags & IFF_BROADCAST)) continue;
@@ -139,22 +128,20 @@ static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit)
/* iiBroadcast is unusable, because it always seems to be set to 255.255.255.255. */
memcpy(&address, &ifo[j].iiAddress.Address, sizeof(sockaddr));
((sockaddr_in*)&address)->sin_addr.s_addr = ifo[j].iiAddress.AddressIn.sin_addr.s_addr | ~ifo[j].iiNetmask.AddressIn.sin_addr.s_addr;
broadcast[index] = NetworkAddress(address, sizeof(sockaddr));
index++;
*broadcast->Append() = NetworkAddress(address, sizeof(sockaddr));
}
closesocket(sock);
return index;
}
#else /* not HAVE_GETIFADDRS */
#include "../../string_func.h"
static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit) // !GETIFADDRS implementation
static void NetworkFindBroadcastIPsInternal(NetworkAddressList *broadcast) // !GETIFADDRS implementation
{
SOCKET sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock == INVALID_SOCKET) return 0;
if (sock == INVALID_SOCKET) return;
char buf[4 * 1024]; // Arbitrary buffer size
struct ifconf ifconf;
@@ -163,12 +150,11 @@ static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit)
ifconf.ifc_buf = buf;
if (ioctl(sock, SIOCGIFCONF, &ifconf) == -1) {
closesocket(sock);
return 0;
return;
}
const char *buf_end = buf + ifconf.ifc_len;
int index = 0;
for (const char *p = buf; p < buf_end && index != limit;) {
for (const char *p = buf; p < buf_end;) {
const struct ifreq *req = (const struct ifreq*)p;
if (req->ifr_addr.sa_family == AF_INET) {
@@ -178,7 +164,7 @@ static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit)
if (ioctl(sock, SIOCGIFFLAGS, &r) != -1 &&
r.ifr_flags & IFF_BROADCAST &&
ioctl(sock, SIOCGIFBRDADDR, &r) != -1) {
broadcast[index++] = NetworkAddress(&r.ifr_broadaddr, sizeof(sockaddr));
*broadcast->Append() = NetworkAddress(&r.ifr_broadaddr, sizeof(sockaddr));
}
}
@@ -189,8 +175,6 @@ static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit)
}
closesocket(sock);
return index;
}
#endif /* all NetworkFindBroadcastIPsInternals */
@@ -198,19 +182,17 @@ static int NetworkFindBroadcastIPsInternal(NetworkAddress *broadcast, int limit)
* Find the IPv4 broadcast addresses; IPv6 uses a completely different
* strategy for broadcasting.
* @param broadcast the list of broadcasts to write into.
* @param limit the maximum number of items to add.
*/
void NetworkFindBroadcastIPs(NetworkAddress *broadcast, int limit)
void NetworkFindBroadcastIPs(NetworkAddressList *broadcast)
{
int count = NetworkFindBroadcastIPsInternal(broadcast, limit);
/* Make sure the list is terminated. */
broadcast[count] = NetworkAddress("");
NetworkFindBroadcastIPsInternal(broadcast);
/* Now display to the debug all the detected ips */
DEBUG(net, 3, "Detected broadcast addresses:");
for (int i = 0; !StrEmpty(broadcast[i].GetHostname()); i++) {
DEBUG(net, 3, "%d) %s", i, broadcast[i].GetHostname());
int i = 0;
for (NetworkAddress *addr = broadcast->Begin(); addr != broadcast->End(); addr++) {
addr->SetPort(NETWORK_DEFAULT_PORT);
DEBUG(net, 3, "%d) %s", i++, addr->GetHostname());
}
}