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Fix potential non-null-terminated string bug

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Stephen Seo 2020-01-09 16:45:57 +09:00
parent 4d68715efb
commit 40c4c9b2ba
1 changed files with 1 additions and 0 deletions
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src/UDPConnection.cpp
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@ -2907,6 +2907,7 @@ UDPC_IPV6_ADDR_TYPE UDPC_strtoa_link(const char *addrStr, uint32_t *linkId_out)
else { else {
struct ifreq req{{0}, 0, 0}; struct ifreq req{{0}, 0, 0};
std::strncpy(req.ifr_name, linkName, IFNAMSIZ); std::strncpy(req.ifr_name, linkName, IFNAMSIZ);
req.ifr_name[IFNAMSIZ - 1] = 0;
int socketHandle = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); int socketHandle = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
if(ioctl(socketHandle, SIOCGIFINDEX, &req) < 0) { if(ioctl(socketHandle, SIOCGIFINDEX, &req) < 0) {
UDPC_CLEANUPSOCKET(socketHandle); UDPC_CLEANUPSOCKET(socketHandle);