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#include "node_internals.h"
#include "node_report.h"
namespace report {
using node::MallocedBuffer;
// Utility function to format libuv socket information.
void ReportEndpoints(uv_handle_t* h, std::ostringstream& out) {
struct sockaddr_storage addr_storage;
struct sockaddr* addr = reinterpret_cast<sockaddr*>(&addr_storage);
char hostbuf[NI_MAXHOST];
char portbuf[NI_MAXSERV];
uv_any_handle* handle = reinterpret_cast<uv_any_handle*>(h);
int addr_size = sizeof(addr_storage);
int rc = -1;
switch (h->type) {
case UV_UDP: {
rc = uv_udp_getsockname(&(handle->udp), addr, &addr_size);
break;
}
case UV_TCP: {
rc = uv_tcp_getsockname(&(handle->tcp), addr, &addr_size);
break;
}
default:
break;
}
if (rc == 0) {
// getnameinfo will format host and port and handle IPv4/IPv6.
rc = getnameinfo(addr,
addr_size,
hostbuf,
sizeof(hostbuf),
portbuf,
sizeof(portbuf),
NI_NUMERICSERV);
if (rc == 0) {
out << std::string(hostbuf) << ":" << std::string(portbuf);
}
if (h->type == UV_TCP) {
// Get the remote end of the connection.
rc = uv_tcp_getpeername(&(handle->tcp), addr, &addr_size);
if (rc == 0) {
rc = getnameinfo(addr,
addr_size,
hostbuf,
sizeof(hostbuf),
portbuf,
sizeof(portbuf),
NI_NUMERICSERV);
if (rc == 0) {
out << " connected to ";
out << std::string(hostbuf) << ":" << std::string(portbuf);
}
} else if (rc == UV_ENOTCONN) {
out << " (not connected)";
}
}
}
}
// Utility function to format libuv path information.
void ReportPath(uv_handle_t* h, std::ostringstream& out) {
MallocedBuffer<char> buffer(0);
int rc = -1;
size_t size = 0;
uv_any_handle* handle = reinterpret_cast<uv_any_handle*>(h);
// First call to get required buffer size.
switch (h->type) {
case UV_FS_EVENT: {
rc = uv_fs_event_getpath(&(handle->fs_event), buffer.data, &size);
break;
}
case UV_FS_POLL: {
rc = uv_fs_poll_getpath(&(handle->fs_poll), buffer.data, &size);
break;
}
default:
break;
}
if (rc == UV_ENOBUFS) {
buffer = MallocedBuffer<char>(size);
switch (h->type) {
case UV_FS_EVENT: {
rc = uv_fs_event_getpath(&(handle->fs_event), buffer.data, &size);
break;
}
case UV_FS_POLL: {
rc = uv_fs_poll_getpath(&(handle->fs_poll), buffer.data, &size);
break;
}
default:
break;
}
if (rc == 0) {
// buffer is not null terminated.
std::string name(buffer.data, size);
out << "filename: " << name;
}
}
}
// Utility function to walk libuv handles.
void WalkHandle(uv_handle_t* h, void* arg) {
const char* type = uv_handle_type_name(h->type);
std::ostringstream data;
JSONWriter* writer = static_cast<JSONWriter*>(arg);
uv_any_handle* handle = reinterpret_cast<uv_any_handle*>(h);
switch (h->type) {
case UV_FS_EVENT:
case UV_FS_POLL:
ReportPath(h, data);
break;
case UV_PROCESS:
data << "pid: " << handle->process.pid;
break;
case UV_TCP:
case UV_UDP:
ReportEndpoints(h, data);
break;
case UV_TIMER: {
uint64_t due = handle->timer.timeout;
uint64_t now = uv_now(handle->timer.loop);
data << "repeat: " << uv_timer_get_repeat(&(handle->timer));
if (due > now) {
data << ", timeout in: " << (due - now) << " ms";
} else {
data << ", timeout expired: " << (now - due) << " ms ago";
}
break;
}
case UV_TTY: {
int height, width, rc;
rc = uv_tty_get_winsize(&(handle->tty), &width, &height);
if (rc == 0) {
data << "width: " << width << ", height: " << height;
}
break;
}
case UV_SIGNAL: {
// SIGWINCH is used by libuv so always appears.
// See http://docs.libuv.org/en/v1.x/signal.html
data << "signum: " << handle->signal.signum
#ifndef _WIN32
<< " (" << node::signo_string(handle->signal.signum) << ")"
#endif
<< "";
break;
}
default:
break;
}
if (h->type == UV_TCP || h->type == UV_UDP
#ifndef _WIN32
|| h->type == UV_NAMED_PIPE
#endif
) {
// These *must* be 0 or libuv will set the buffer sizes to the non-zero
// values they contain.
int send_size = 0;
int recv_size = 0;
if (h->type == UV_TCP || h->type == UV_UDP) {
data << ", ";
}
uv_send_buffer_size(h, &send_size);
uv_recv_buffer_size(h, &recv_size);
data << "send buffer size: " << send_size
<< ", recv buffer size: " << recv_size;
}
if (h->type == UV_TCP || h->type == UV_NAMED_PIPE || h->type == UV_TTY ||
h->type == UV_UDP || h->type == UV_POLL) {
uv_os_fd_t fd_v;
int rc = uv_fileno(h, &fd_v);
// uv_os_fd_t is an int on Unix and HANDLE on Windows.
#ifndef _WIN32
if (rc == 0) {
switch (fd_v) {
case 0:
data << ", stdin";
break;
case 1:
data << ", stdout";
break;
case 2:
data << ", stderr";
break;
default:
data << ", file descriptor: " << static_cast<int>(fd_v);
break;
}
}
#endif
}
if (h->type == UV_TCP || h->type == UV_NAMED_PIPE || h->type == UV_TTY) {
data << ", write queue size: " << handle->stream.write_queue_size;
data << (uv_is_readable(&handle->stream) ? ", readable" : "")
<< (uv_is_writable(&handle->stream) ? ", writable" : "");
}
writer->json_start();
writer->json_keyvalue("type", type);
writer->json_keyvalue("is_active", static_cast<bool>(uv_is_active(h)));
writer->json_keyvalue("is_referenced", static_cast<bool>(uv_has_ref(h)));
writer->json_keyvalue("address",
std::to_string(reinterpret_cast<int64_t>(h)));
writer->json_keyvalue("details", data.str());
writer->json_end();
}
std::string EscapeJsonChars(const std::string& str) {
const std::string control_symbols[0x20] = {
"\\u0000", "\\u0001", "\\u0002", "\\u0003", "\\u0004", "\\u0005",
"\\u0006", "\\u0007", "\\b", "\\t", "\\n", "\\v", "\\f", "\\r",
"\\u000e", "\\u000f", "\\u0010", "\\u0011", "\\u0012", "\\u0013",
"\\u0014", "\\u0015", "\\u0016", "\\u0017", "\\u0018", "\\u0019",
"\\u001a", "\\u001b", "\\u001c", "\\u001d", "\\u001e", "\\u001f"
};
std::string ret = "";
size_t last_pos = 0;
size_t pos = 0;
for (; pos < str.size(); ++pos) {
std::string replace;
char ch = str[pos];
if (ch == '\\') {
replace = "\\\\";
} else if (ch == '\"') {
replace = "\\\"";
} else {
size_t num = static_cast<size_t>(ch);
if (num < 0x20) replace = control_symbols[num];
}
if (!replace.empty()) {
if (pos > last_pos) {
ret += str.substr(last_pos, pos - last_pos);
}
last_pos = pos + 1;
ret += replace;
}
}
// Append any remaining symbols.
if (last_pos < str.size()) {
ret += str.substr(last_pos, pos - last_pos);
}
return ret;
}
} // namespace report
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