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Attempt to make code platform agnostic

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Getting scope_id from device name from ipv6 link-local address was
previously using only a unix supported api. Added (untested) code to do
the same for windows machines.
This commit is contained in:
Stephen Seo 2019-09-19 10:35:22 +09:00
parent 5eb0feb22b
commit 8661af9529
1 changed files with 17 additions and 1 deletions
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18
cpp_impl/src/UDPConnection.cpp
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@ -13,8 +13,13 @@
#include <ios>
#include <iomanip>
#include <regex>
#if UDPC_PLATFORM == UDPC_PLATFORM_WINDOWS
#include <netioapi.h>
#elif UDPC_PLATFORM == UDPC_PLATFORM_MAC || UDPC_PLATFORM == UDPC_PLATFORM_LINUX
#include <sys/ioctl.h>
#include <net/if.h>
#endif
//static const std::regex ipv6_regex = std::regex(R"d((([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])))d");
static const std::regex ipv6_regex_nolink = std::regex(R"d((([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])))d");
@ -1605,6 +1610,15 @@ struct in6_addr UDPC_strtoa_link(const char *addrStr, uint32_t *linkId_out) {
}
}
}
uint32_t scope_id;
#if UDPC_PLATFORM == UDPC_PLATFORM_WINDOWS
scope_id = if_nametoindex(linkName);
if(scope_id == 0) {
checkSetOut(0);
return in6addr_loopback;
}
#elif UDPC_PLATFORM == UDPC_PLATFORM_MAC || UDPC_PLATFORM == UDPC_PLATFORM_LINUX
struct ifreq req{{0}, 0, 0};
std::strncpy(req.ifr_name, linkName, IFNAMSIZ);
int socketHandle = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
@ -1613,8 +1627,10 @@ struct in6_addr UDPC_strtoa_link(const char *addrStr, uint32_t *linkId_out) {
checkSetOut(0);
return in6addr_loopback;
}
scope_id = req.ifr_ifindex;
#endif
CleanupSocket(socketHandle);
checkSetOut(req.ifr_ifindex);
checkSetOut(scope_id);
return result;
}