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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2011 New Dream Network
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include <arpa/inet.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include "common/admin_socket.h"
#include "common/errno.h"
#include "common/safe_io.h"
#include "common/admin_socket_client.h"
#include "include/compat.h"
#include "include/sock_compat.h"
using std::ostringstream;
const char* get_rand_socket_path()
{
static char *g_socket_path = NULL;
if (g_socket_path == NULL) {
char buf[512];
const char *tdir = getenv("TMPDIR");
#ifdef _WIN32
if (tdir == NULL) {
tdir = getenv("TEMP");
}
#endif /* _WIN32 */
if (tdir == NULL) {
tdir = "/tmp";
}
snprintf(buf, sizeof(((struct sockaddr_un*)0)->sun_path),
"%s/perfcounters_test_socket.%ld.%ld",
tdir, (long int)getpid(), time(NULL));
g_socket_path = (char*)strdup(buf);
}
return g_socket_path;
}
static std::string asok_connect(const std::string &path, int *fd)
{
int socket_fd = socket_cloexec(PF_UNIX, SOCK_STREAM, 0);
if(socket_fd < 0) {
int err = ceph_sock_errno();
ostringstream oss;
oss << "socket(PF_UNIX, SOCK_STREAM, 0) failed: " << cpp_strerror(err);
return oss.str();
}
struct sockaddr_un address;
// FIPS zeroization audit 20191115: this memset is fine.
memset(&address, 0, sizeof(struct sockaddr_un));
address.sun_family = AF_UNIX;
snprintf(address.sun_path, sizeof(address.sun_path), "%s", path.c_str());
if (::connect(socket_fd, (struct sockaddr *) &address,
sizeof(struct sockaddr_un)) != 0) {
int err = ceph_sock_errno();
ostringstream oss;
oss << "connect(" << socket_fd << ") failed: " << cpp_strerror(err);
compat_closesocket(socket_fd);
return oss.str();
}
struct timeval timer;
timer.tv_sec = 10;
timer.tv_usec = 0;
if (::setsockopt(socket_fd, SOL_SOCKET, SO_RCVTIMEO, (SOCKOPT_VAL_TYPE)&timer, sizeof(timer))) {
int err = ceph_sock_errno();
ostringstream oss;
oss << "setsockopt(" << socket_fd << ", SO_RCVTIMEO) failed: "
<< cpp_strerror(err);
compat_closesocket(socket_fd);
return oss.str();
}
timer.tv_sec = 10;
timer.tv_usec = 0;
if (::setsockopt(socket_fd, SOL_SOCKET, SO_SNDTIMEO, (SOCKOPT_VAL_TYPE)&timer, sizeof(timer))) {
int err = ceph_sock_errno();
ostringstream oss;
oss << "setsockopt(" << socket_fd << ", SO_SNDTIMEO) failed: "
<< cpp_strerror(err);
compat_closesocket(socket_fd);
return oss.str();
}
*fd = socket_fd;
return "";
}
static std::string asok_request(int socket_fd, std::string request)
{
ssize_t res = safe_send(socket_fd, request.c_str(), request.length() + 1);
if (res < 0) {
int err = res;
ostringstream oss;
oss << "safe_write(" << socket_fd << ") failed to write request code: "
<< cpp_strerror(err);
return oss.str();
}
return "";
}
AdminSocketClient::
AdminSocketClient(const std::string &path)
: m_path(path)
{
}
std::string AdminSocketClient::ping(bool *ok)
{
std::string version;
std::string result = do_request("{\"prefix\":\"0\"}", &version);
*ok = result == "" && version.length() == 1;
return result;
}
std::string AdminSocketClient::do_request(std::string request, std::string *result)
{
int socket_fd = 0, res;
std::string buffer;
uint32_t message_size_raw, message_size;
std::string err = asok_connect(m_path, &socket_fd);
if (!err.empty()) {
goto out;
}
err = asok_request(socket_fd, request);
if (!err.empty()) {
goto done;
}
res = safe_recv_exact(socket_fd, &message_size_raw,
sizeof(message_size_raw));
if (res < 0) {
int e = res;
ostringstream oss;
oss << "safe_recv(" << socket_fd << ") failed to read message size: "
<< cpp_strerror(e);
err = oss.str();
goto done;
}
message_size = ntohl(message_size_raw);
buffer.resize(message_size, 0);
res = safe_recv_exact(socket_fd, &buffer[0], message_size);
if (res < 0) {
int e = res;
ostringstream oss;
oss << "safe_recv(" << socket_fd << ") failed: " << cpp_strerror(e);
err = oss.str();
goto done;
}
//printf("MESSAGE FROM SERVER: %s\n", buffer.c_str());
std::swap(*result, buffer);
done:
compat_closesocket(socket_fd);
out:
return err;
}
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