Sara Golemon
6ec64e8bf9
I was learning from @jdelong and he said that you should use double quotes for local includes and angle brackets for library includes. I asked why our code was the way it was, and he said he wanted to clean it up. I beat him to it :) Conflicts: hphp/runtime/base/server/admin_request_handler.cpp hphp/runtime/vm/named_entity.h
144 linhas
4.0 KiB
C++
144 linhas
4.0 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010- Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#if !defined(SKIP_USER_CHANGE)
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#include "hphp/util/capability.h"
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#include "hphp/util/logger.h"
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#include "linux/types.h"
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#include "sys/capability.h"
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#include "sys/prctl.h"
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#include "sys/types.h"
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#include <pwd.h>
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namespace HPHP {
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///////////////////////////////////////////////////////////////////////////////
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static bool setInitialCapabilities() {
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cap_t cap_d = cap_init();
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if (cap_d != nullptr) {
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cap_value_t cap_list[] = {CAP_NET_BIND_SERVICE, CAP_SYS_RESOURCE,
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CAP_SETUID, CAP_SETGID, CAP_SYS_NICE};
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cap_clear(cap_d);
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if (cap_set_flag(cap_d, CAP_PERMITTED, 5, cap_list, CAP_SET) < 0 ||
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cap_set_flag(cap_d, CAP_EFFECTIVE, 5, cap_list, CAP_SET) < 0) {
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Logger::Error("cap_set_flag failed");
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return false;
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}
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if (cap_set_proc(cap_d) == -1) {
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Logger::Error("cap_set_proc failed");
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return false;
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}
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if (cap_free(cap_d) == -1) {
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Logger::Error("cap_free failed");
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return false;
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}
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if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) < 0) {
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Logger::Error("prctl(PR_SET_KEEPCAPS) failed");
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return false;
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}
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prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
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return true;
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}
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return false;
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}
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static bool setMinimalCapabilities() {
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cap_t cap_d = cap_init();
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if (cap_d != nullptr) {
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cap_value_t cap_list[] = {CAP_NET_BIND_SERVICE, CAP_SYS_RESOURCE,
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CAP_SYS_NICE};
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cap_clear(cap_d);
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if (cap_set_flag(cap_d, CAP_PERMITTED, 3, cap_list, CAP_SET) < 0 ||
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cap_set_flag(cap_d, CAP_EFFECTIVE, 3, cap_list, CAP_SET) < 0) {
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Logger::Error("cap_set_flag failed");
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return false;
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}
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if (cap_set_proc(cap_d) == -1) {
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Logger::Error("cap_set_proc failed");
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return false;
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}
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if (cap_free(cap_d) == -1) {
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Logger::Error("cap_free failed");
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return false;
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}
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prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
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return true;
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}
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return false;
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}
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bool Capability::ChangeUnixUser(uid_t uid) {
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if (setInitialCapabilities()) {
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struct passwd *pw;
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if ((pw = getpwuid(uid)) == nullptr) {
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Logger::Error("unable to getpwuid(%d): %s", uid, strerror(errno));
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return false;
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}
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if (pw->pw_gid == 0 || setgid(pw->pw_gid) < 0) {
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Logger::Error("unable to drop gid privs: %s", strerror(errno));
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return false;
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}
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if (uid == 0 || setuid(uid) < 0) {
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Logger::Error("unable to drop uid privs: %s", strerror(errno));
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return false;
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}
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if (!setMinimalCapabilities()) {
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Logger::Error("unable to set minimal server capabiltiies");
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return false;
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}
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return true;
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}
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return false;
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}
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bool Capability::ChangeUnixUser(const std::string &username) {
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if (!username.empty()) {
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struct passwd *pw = getpwnam(username.c_str());
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if (pw && pw->pw_uid) {
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return ChangeUnixUser(pw->pw_uid);
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}
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}
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return false;
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}
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bool Capability::SetDumpable() {
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if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0)) {
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Logger::Error("Unable to make process dumpable: %s", strerror(errno));
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}
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return true;
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}
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///////////////////////////////////////////////////////////////////////////////
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}
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#endif
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