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Get client process id over ip/port when server runs on UNIX socket. (#1418)

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* handle socket options for UNIX socket same as others

 * set FD_CLOEXEC by default
 * invoke `socket_options` callback if set

* Offer Client info even on UNIX socket based Server

HTTP Request header "REMOTE_PORT" contains client process id if possible
when Server works on UNIX socket.

* retrigger checks

* retrigger checks

* add support macOS

Co-authored-by: Changbin Park <changbin.park@ahnlab.com>
This commit is contained in:
Changbin Park 2022-11-03 23:25:18 +09:00 • committed by GitHub
parent ad7edc7b27
commit 93a51979c4
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21
httplib.h
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@ -2601,6 +2601,9 @@ socket_t create_socket(const std::string &host, const std::string &ip, int port,
hints.ai_addrlen = static_cast<socklen_t>(
sizeof(addr) - sizeof(addr.sun_path) + addrlen);
fcntl(sock, F_SETFD, FD_CLOEXEC);
if (socket_options) { socket_options(sock); }
if (!bind_or_connect(sock, hints)) {
close_socket(sock);
sock = INVALID_SOCKET;
@ -2871,6 +2874,24 @@ inline void get_remote_ip_and_port(socket_t sock, std::string &ip, int &port) {
if (!getpeername(sock, reinterpret_cast<struct sockaddr *>(&addr),
&addr_len)) {
#ifndef _WIN32
if (addr.ss_family == AF_UNIX) {
#if defined(__linux__)
struct ucred ucred;
socklen_t len = sizeof(ucred);
if (getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &len) == 0) {
port = ucred.pid;
}
#elif defined(SOL_LOCAL) && defined(SO_PEERPID) // __APPLE__
pid_t pid;
socklen_t len = sizeof(pid);
if (getsockopt(sock, SOL_LOCAL, SO_PEERPID, &pid, &len) == 0) {
port = pid;
}
#endif
return;
}
#endif
get_remote_ip_and_port(addr, addr_len, ip, port);
}
}