ip utils: return interface name from getHostName
Change-Id: I140c39b3bdba86da4b78b276a836669dc604da9a
diff --git a/src/ip_utils.cpp b/src/ip_utils.cpp
index 6e7b69c..3bcf38c 100644
--- a/src/ip_utils.cpp
+++ b/src/ip_utils.cpp
@@ -69,9 +69,11 @@
return hostname;
}
-int
-ip_utils::getHostName(char* out, size_t out_len)
+
+ip_utils::IpInterfaceAddress
+ip_utils::getHostName()
{
+ IpInterfaceAddress ret;
char tempstr[INET_ADDRSTRLEN];
const char* p = NULL;
#ifdef _WIN32
@@ -84,18 +86,17 @@
memcpy(&localAddr.sin_addr, h->h_addr_list[0], 4);
p = inet_ntop(AF_INET, &localAddr.sin_addr, tempstr, sizeof(tempstr));
if (p)
- strncpy(out, p, out_len);
+ ret.address = p;
else
- return -1;
+ return {};
} else {
- return -1;
+ return {};
}
#elif (defined(BSD) && BSD >= 199306) || defined(__FreeBSD_kernel__)
- int retVal = 0;
struct ifaddrs* ifap;
struct ifaddrs* ifa;
if (getifaddrs(&ifap) != 0)
- return -1;
+ return {};
// Cycle through available interfaces.
for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
// Skip loopback, point-to-point and down interfaces.
@@ -103,25 +104,27 @@
// a list of configurable interfaces.
if ((ifa->ifa_flags & IFF_LOOPBACK) || (!(ifa->ifa_flags & IFF_UP)))
continue;
- if (ifa->ifa_addr->sa_family == AF_INET) {
- if (((struct sockaddr_in*) (ifa->ifa_addr))->sin_addr.s_addr == htonl(INADDR_LOOPBACK)) {
- // We don't want the loopback interface. Go to next one.
- continue;
+ auto family = ifa->ifa_addr->sa_family;
+ if (family == AF_INET) {
+ void* addr;
+ if (family == AF_INET) {
+ if (((struct sockaddr_in*) (ifa->ifa_addr))->sin_addr.s_addr == htonl(INADDR_LOOPBACK))
+ continue;
+ addr = &((struct sockaddr_in*) (ifa->ifa_addr))->sin_addr;
}
- p = inet_ntop(AF_INET,
- &((struct sockaddr_in*) (ifa->ifa_addr))->sin_addr,
+
+ ret.interface = ifa->ifa_name;
+ p = inet_ntop(family,
+ addr,
tempstr,
sizeof(tempstr));
if (p)
- strncpy(out, p, out_len);
- else
- retVal = -1;
+ ret.address = p;
break;
}
}
freeifaddrs(ifap);
- retVal = ifa ? 0 : -1;
- return retVal;
+ return ret;
#else
struct ifconf ifConf;
struct ifreq ifReq;
@@ -136,14 +139,14 @@
// Create an unbound datagram socket to do the SIOCGIFADDR ioctl on.
localSock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (localSock == INVALID_SOCKET)
- return -1;
+ return ret;
/* Get the interface configuration information... */
ifConf.ifc_len = (int) sizeof szBuffer;
ifConf.ifc_ifcu.ifcu_buf = (caddr_t) szBuffer;
nResult = ioctl(localSock, SIOCGIFCONF, &ifConf);
if (nResult < 0) {
close(localSock);
- return -1;
+ return ret;
}
unsigned int i;
unsigned int j = 0;
@@ -161,32 +164,34 @@
if ((ifReq.ifr_flags & IFF_LOOPBACK) || (!(ifReq.ifr_flags & IFF_UP)))
continue;
if (pifReq->ifr_addr.sa_family == AF_INET) {
- memcpy(&localAddr, &pifReq->ifr_addr, sizeof pifReq->ifr_addr);
- if (localAddr.sin_addr.s_addr == htonl(INADDR_LOOPBACK)) {
+ if (((sockaddr_in*)&pifReq->ifr_addr)->sin_addr.s_addr == htonl(INADDR_LOOPBACK)) {
// We don't want the loopback interface. Go to the next one.
continue;
}
+ ret.interface = pifReq->ifr_name;
+ p = inet_ntop(pifReq->ifr_addr.sa_family,
+ (sockaddr_in*)&pifReq->ifr_addr,
+ tempstr,
+ sizeof(tempstr));
+ if (p)
+ ret.address = p;
+
}
j++; // Increment j if we found an address which is not loopback and is up.
}
close(localSock);
- p = inet_ntop(AF_INET, &localAddr.sin_addr, tempstr, sizeof(tempstr));
- if (p)
- strncpy(out, p, out_len);
- else
- return -1;
#endif
- return 0;
+ return {};
}
+
std::string
-ip_utils::getGateway(char* localHost, ip_utils::subnet_mask prefix)
+ip_utils::getGateway(std::string_view localHost, ip_utils::subnet_mask prefix)
{
- std::string_view localHostStr(localHost);
if (prefix == ip_utils::subnet_mask::prefix_32bit)
- return std::string(localHostStr);
+ return std::string(localHost);
std::string defaultGw {};
// Make a vector of each individual number in the ip address.
- std::vector<std::string_view> tokens = split_string(localHostStr, '.');
+ std::vector<std::string_view> tokens = split_string(localHost, '.');
// Build a gateway address from the individual ip components.
for (unsigned i = 0; i <= (unsigned) prefix; i++)
defaultGw = fmt::format("{:s}{:s}.", defaultGw, tokens[i]);
@@ -202,11 +207,12 @@
ip_utils::getLocalGateway()
{
char localHostBuf[INET_ADDRSTRLEN];
- if (ip_utils::getHostName(localHostBuf, INET_ADDRSTRLEN) < 0) {
+ auto hostInfo = ip_utils::getHostName();
+ if (hostInfo.address.empty()) {
// JAMI_WARN("Couldn't find local host");
return {};
} else {
- return IpAddr(ip_utils::getGateway(localHostBuf, ip_utils::subnet_mask::prefix_24bit));
+ return IpAddr(ip_utils::getGateway(hostInfo.address, ip_utils::subnet_mask::prefix_24bit));
}
}
@@ -387,12 +393,11 @@
unsigned addrCnt = PJ_ARRAY_SIZE(addrList);
std::vector<std::string> ifaceList;
-
if (pj_enum_ip_interface(pj_AF_UNSPEC(), &addrCnt, addrList) == PJ_SUCCESS) {
for (unsigned i = 0; i < addrCnt; i++) {
char addr[PJ_INET6_ADDRSTRLEN];
pj_sockaddr_print(&addrList[i], addr, sizeof(addr), 0);
- ifaceList.push_back(std::string(addr));
+ ifaceList.emplace_back(addr);
}
}