diff options
| author | Max Kellermann <max@musicpd.org> | 2018-08-20 15:59:17 +0200 |
|---|---|---|
| committer | Max Kellermann <max@musicpd.org> | 2018-08-20 15:59:17 +0200 |
| commit | 11396d4fba1346ccbd534b13b1a4aa8500a9a60c (patch) | |
| tree | 955527bfc80feb935ec5521cc449f7c006f72c80 /src/net | |
| parent | 4c6ae4e9e8c30e5eb970ef4f599fc2c72df1fd9f (diff) | |
net/SocketAddress: add method GetLocalRaw()
Diffstat (limited to 'src/net')
| -rw-r--r-- | src/net/SocketAddress.cxx | 27 | ||||
| -rw-r--r-- | src/net/SocketAddress.hxx | 13 |
2 files changed, 40 insertions, 0 deletions
diff --git a/src/net/SocketAddress.cxx b/src/net/SocketAddress.cxx index 8b28832f8..70175a29f 100644 --- a/src/net/SocketAddress.cxx +++ b/src/net/SocketAddress.cxx @@ -29,9 +29,14 @@ #include "config.h" #include "SocketAddress.hxx" +#include "util/StringView.hxx" #include <string.h> +#ifdef HAVE_UN +#include <sys/un.h> +#endif + #ifdef HAVE_TCP #ifdef _WIN32 #include <ws2tcpip.h> @@ -46,6 +51,28 @@ SocketAddress::operator==(SocketAddress other) const noexcept return size == other.size && memcmp(address, other.address, size) == 0; } +#ifdef HAVE_UN + +StringView +SocketAddress::GetLocalRaw() const noexcept +{ + if (IsNull() || GetFamily() != AF_LOCAL) + /* not applicable */ + return nullptr; + + const auto sun = (const struct sockaddr_un *)GetAddress(); + const auto start = (const char *)sun; + const auto path = sun->sun_path; + const size_t header_size = path - start; + if (size < header_size) + /* malformed address */ + return nullptr; + + return {path, size - header_size}; +} + +#endif + #ifdef HAVE_TCP bool diff --git a/src/net/SocketAddress.hxx b/src/net/SocketAddress.hxx index 6a75352ac..b83cbf5b0 100644 --- a/src/net/SocketAddress.hxx +++ b/src/net/SocketAddress.hxx @@ -41,6 +41,8 @@ #include <sys/socket.h> #endif +struct StringView; + /** * An OO wrapper for struct sockaddr. */ @@ -94,6 +96,17 @@ public: return GetFamily() != AF_UNSPEC; } +#ifdef HAVE_UN + /** + * Extract the local socket path (which may begin with a null + * byte, denoting an "abstract" socket). The return value's + * "size" attribute includes the null terminator. Returns + * nullptr if not applicable. + */ + gcc_pure + StringView GetLocalRaw() const noexcept; +#endif + #ifdef HAVE_TCP /** * Is this the IPv6 wildcard address (in6addr_any)? |