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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <cassert>
+#include <cstddef>
+#include <cstring>
+#include <limits>
+
+#ifdef IOS
+#include <premac.h>
+#import <Foundation/Foundation.h>
+#include <postmac.h>
+#endif
+
+#include "system.hxx"
+
+#include <o3tl/safeint.hxx>
+#include <osl/security.h>
+#include <rtl/bootstrap.hxx>
+#include <sal/log.hxx>
+
+#include <osl/thread.h>
+#include <osl/file.h>
+
+#if defined LINUX || defined __sun
+#include <crypt.h>
+#endif
+
+#if defined HAIKU
+#include <fs_info.h>
+#include <FindDirectory.h>
+#endif
+
+#include "secimpl.hxx"
+
+#ifdef ANDROID
+#define getpwuid_r(uid, pwd, buf, buflen, result) (*(result) = getpwuid(uid), (*(result) ? (memcpy (buf, *(result), sizeof (struct passwd)), 0) : errno))
+#endif
+
+static bool osl_psz_getHomeDir(oslSecurity Security, OString* pszDirectory);
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory);
+
+static bool sysconf_SC_GETPW_R_SIZE_MAX(std::size_t * value) {
+#if defined _SC_GETPW_R_SIZE_MAX
+ long m;
+ errno = 0;
+ m = sysconf(_SC_GETPW_R_SIZE_MAX);
+ if (m == -1) {
+ /* _SC_GETPW_R_SIZE_MAX has no limit; some platforms like certain
+ FreeBSD versions support sysconf(_SC_GETPW_R_SIZE_MAX) in a broken
+ way and always set EINVAL, so be resilient here: */
+ return false;
+ }
+ SAL_WARN_IF( m < 0 || o3tl::make_unsigned(m) >= std::numeric_limits<std::size_t>::max(), "sal.osl",
+ "m < 0 || (unsigned long) m >= std::numeric_limits<std::size_t>::max()");
+ *value = static_cast<std::size_t>(m);
+ return true;
+#else
+ /* some platforms like macOS 1.3 do not define _SC_GETPW_R_SIZE_MAX: */
+ return false;
+#endif
+}
+
+static oslSecurityImpl * growSecurityImpl(
+ oslSecurityImpl * impl, std::size_t * bufSize)
+{
+ std::size_t n = 0;
+ oslSecurityImpl * p = nullptr;
+ if (impl == nullptr) {
+ if (!sysconf_SC_GETPW_R_SIZE_MAX(&n)) {
+ /* choose something sensible (the callers of growSecurityImpl will
+ detect it if the allocated buffer is too small: */
+ n = 1024;
+ }
+ } else if (*bufSize <= std::numeric_limits<std::size_t>::max() / 2) {
+ n = 2 * *bufSize;
+ }
+ if (n != 0) {
+ if (n <= std::numeric_limits<std::size_t>::max()
+ - offsetof(oslSecurityImpl, m_buffer))
+ {
+ *bufSize = n;
+ n += offsetof(oslSecurityImpl, m_buffer);
+ } else {
+ *bufSize = std::numeric_limits<std::size_t>::max()
+ - offsetof(oslSecurityImpl, m_buffer);
+ n = std::numeric_limits<std::size_t>::max();
+ }
+ p = static_cast<oslSecurityImpl *>(realloc(impl, n));
+ memset (p, 0, n);
+ }
+ if (p == nullptr) {
+ free(impl);
+ }
+ return p;
+}
+
+static void deleteSecurityImpl(oslSecurityImpl * impl) {
+ free(impl);
+}
+
+oslSecurity SAL_CALL osl_getCurrentSecurity()
+{
+ std::size_t n = 0;
+ oslSecurityImpl * p = nullptr;
+ for (;;) {
+ struct passwd * found;
+ p = growSecurityImpl(p, &n);
+ if (p == nullptr) {
+ return nullptr;
+ }
+#if defined(IOS) && defined(X86_64)
+ // getpwuid_r() does not work in the iOS simulator
+ (void) found;
+ char * buffer = p->m_buffer;
+ assert(n >= 100);
+ strcpy(buffer, "mobile");
+ p->m_pPasswd.pw_name = buffer;
+ buffer += strlen(buffer) + 1;
+ strcpy(buffer, "*");
+ p->m_pPasswd.pw_passwd = buffer;
+ buffer += strlen(buffer) + 1;
+ p->m_pPasswd.pw_uid = geteuid();
+ p->m_pPasswd.pw_gid = getegid();
+ p->m_pPasswd.pw_change = 0;
+ strcpy(buffer, "");
+ p->m_pPasswd.pw_class = buffer;
+ buffer += strlen(buffer) + 1;
+ strcpy(buffer, "Mobile User");
+ p->m_pPasswd.pw_gecos = buffer;
+ buffer += strlen(buffer) + 1;
+ strcpy(buffer, "/var/mobile"); // ???
+ p->m_pPasswd.pw_dir = buffer;
+ buffer += strlen(buffer) + 1;
+ strcpy(buffer, "");
+ p->m_pPasswd.pw_shell = buffer;
+ buffer += strlen(buffer) + 1;
+ p->m_pPasswd.pw_expire = 0;
+ return p;
+#else
+ switch (getpwuid_r(getuid(), &p->m_pPasswd, p->m_buffer, n, &found)) {
+ case ERANGE:
+ break;
+ case 0:
+ if (found != nullptr) {
+ return p;
+ }
+ [[fallthrough]];
+ default:
+ deleteSecurityImpl(p);
+ return nullptr;
+ }
+#endif
+ }
+}
+
+oslSecurityError SAL_CALL osl_loginUser(
+ SAL_UNUSED_PARAMETER rtl_uString *,
+ SAL_UNUSED_PARAMETER rtl_uString *,
+ SAL_UNUSED_PARAMETER oslSecurity *
+ )
+{
+ return osl_Security_E_None;
+}
+
+oslSecurityError SAL_CALL osl_loginUserOnFileServer(
+ SAL_UNUSED_PARAMETER rtl_uString *,
+ SAL_UNUSED_PARAMETER rtl_uString *,
+ SAL_UNUSED_PARAMETER rtl_uString *,
+ SAL_UNUSED_PARAMETER oslSecurity *
+ )
+{
+ return osl_Security_E_UserUnknown;
+}
+
+sal_Bool SAL_CALL osl_getUserIdent(oslSecurity Security, rtl_uString **ustrIdent)
+{
+ bool bRet = false;
+ char pszIdent[1024];
+
+ pszIdent[0] = '\0';
+
+ bRet = osl_psz_getUserIdent(Security,pszIdent,sizeof(pszIdent));
+
+ rtl_string2UString( ustrIdent, pszIdent, rtl_str_getLength( pszIdent ), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+ SAL_WARN_IF(*ustrIdent == nullptr, "sal.osl", "*ustrIdent == NULL");
+
+ return bRet;
+}
+
+bool osl_psz_getUserIdent(oslSecurity Security, char *pszIdent, sal_uInt32 nMax)
+{
+ char buffer[32];
+ sal_Int32 nChr;
+
+ oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+ if (pSecImpl == nullptr)
+ return false;
+
+ nChr = snprintf(buffer, sizeof(buffer), "%u", pSecImpl->m_pPasswd.pw_uid);
+ if ( nChr < 0 || sal::static_int_cast<sal_uInt32>(nChr) >= sizeof(buffer)
+ || sal::static_int_cast<sal_uInt32>(nChr) >= nMax )
+ return false; /* leave *pszIdent unmodified in case of failure */
+
+ memcpy(pszIdent, buffer, nChr+1);
+ return true;
+}
+
+sal_Bool SAL_CALL osl_getUserName(oslSecurity Security, rtl_uString **ustrName)
+{
+ bool bRet = false;
+ char * pszName;
+ sal_Int32 len;
+
+ oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+ if (pSecImpl != nullptr && pSecImpl->m_pPasswd.pw_name != nullptr) {
+ pszName = pSecImpl->m_pPasswd.pw_name;
+ auto const n = std::strlen(pszName);
+ if (n <= o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+ len = n;
+ bRet = true;
+ }
+ }
+
+ if (!bRet) {
+ pszName = nullptr;
+ len = 0;
+ }
+
+ rtl_string2UString( ustrName, pszName, len, osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+ SAL_WARN_IF(*ustrName == nullptr, "sal.osl", "ustrName == NULL");
+
+ return bRet;
+}
+
+sal_Bool SAL_CALL osl_getShortUserName(oslSecurity Security, rtl_uString **ustrName)
+{
+ return osl_getUserName(Security, ustrName); // No domain name on unix
+}
+
+sal_Bool SAL_CALL osl_getHomeDir(oslSecurity Security, rtl_uString **pustrDirectory)
+{
+ bool bRet = false;
+ OString pszDirectory;
+
+ bRet = osl_psz_getHomeDir(Security,&pszDirectory);
+
+ if ( bRet )
+ {
+ rtl_string2UString( pustrDirectory, pszDirectory.getStr(), pszDirectory.getLength(), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+ SAL_WARN_IF(*pustrDirectory == nullptr, "sal.osl", "*pustrDirectory == NULL");
+ osl_getFileURLFromSystemPath( *pustrDirectory, pustrDirectory );
+ }
+
+ return bRet;
+}
+
+static bool osl_psz_getHomeDir(oslSecurity Security, OString* pszDirectory)
+{
+ assert(pszDirectory != nullptr);
+
+ oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+ if (pSecImpl == nullptr)
+ return false;
+
+#ifdef HAIKU
+ dev_t volume = dev_for_path("/boot");
+ char homeDir[B_PATH_NAME_LENGTH + B_FILE_NAME_LENGTH];
+ status_t result = find_directory(B_USER_DIRECTORY, volume, false, homeDir,
+ sizeof(homeDir));
+ if (result == B_OK) {
+ static_assert(
+ B_PATH_NAME_LENGTH + B_FILE_NAME_LENGTH <= std::numeric_limits<sal_Int32>::max());
+ *pszDirectory = OString(homeDir, std::strlen(homeDir));
+ return true;
+ }
+ return false;
+#endif
+
+#ifdef ANDROID
+{
+ OUString pValue;
+
+ if (rtl::Bootstrap::get("HOME", pValue))
+ {
+ auto const pStrValue = OUStringToOString(pValue, RTL_TEXTENCODING_UTF8);
+ if (!pStrValue.isEmpty())
+ {
+ *pszDirectory = pStrValue;
+ return true;
+ }
+ }
+}
+#endif
+
+#ifdef IOS
+ {
+ // Let's pretend the app-specific "Documents" directory is the home directory for now
+ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
+ NSString *userDirectory = [paths objectAtIndex:0];
+ auto const len = [userDirectory length];
+ if (len <= std::numeric_limits<sal_Int32>::max())
+ {
+ *pszDirectory = OString([userDirectory UTF8String], len);
+ return sal_True;
+ }
+ }
+#endif
+
+ /* if current user, check also environment for HOME */
+ if (getuid() == pSecImpl->m_pPasswd.pw_uid)
+ {
+ char *pStr = nullptr;
+#ifdef __sun
+ char buffer[8192];
+
+ struct passwd pwd;
+ struct passwd *ppwd;
+
+#ifdef _POSIX_PTHREAD_SEMANTICS
+ if ( 0 != getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer), &ppwd ) )
+ ppwd = NULL;
+#else
+ ppwd = getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer) );
+#endif
+
+ if ( ppwd )
+ pStr = ppwd->pw_dir;
+#else
+ pStr = getenv("HOME");
+#endif
+
+ if (pStr != nullptr && pStr[0] != '\0' && access(pStr, 0) == 0)
+ {
+ auto const len = std::strlen(pStr);
+ if (len > o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+ return false;
+ }
+ *pszDirectory = OString(pStr, len);
+ return true;
+ }
+ }
+ if (pSecImpl->m_pPasswd.pw_dir != nullptr)
+ {
+ auto const len = std::strlen(pSecImpl->m_pPasswd.pw_dir);
+ if (len > o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+ return false;
+ }
+ *pszDirectory = OString(pSecImpl->m_pPasswd.pw_dir, len);
+ }
+ else
+ return false;
+
+ return true;
+}
+
+sal_Bool SAL_CALL osl_getConfigDir(oslSecurity Security, rtl_uString **pustrDirectory)
+{
+ bool bRet = false;
+ OString pszDirectory;
+
+ bRet = osl_psz_getConfigDir(Security,&pszDirectory);
+
+ if ( bRet )
+ {
+ rtl_string2UString( pustrDirectory, pszDirectory.getStr(), pszDirectory.getLength(), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+ SAL_WARN_IF(*pustrDirectory == nullptr, "sal.osl", "*pustrDirectory == NULL");
+ osl_getFileURLFromSystemPath( *pustrDirectory, pustrDirectory );
+ }
+
+ return bRet;
+}
+
+#if defined HAIKU
+
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory)
+{
+ assert(pszDirectory != nullptr);
+ (void) Security;
+ dev_t volume = dev_for_path("/boot");
+ char configDir[B_PATH_NAME_LENGTH + B_FILE_NAME_LENGTH];
+ status_t result = find_directory(B_USER_SETTINGS_DIRECTORY, volume, false,
+ configDir, sizeof(configDir));
+ if (result == B_OK) {
+ auto const len = strlen(configDir);
+ if (len <= sal_uInt32(std::numeric_limits<sal_Int32>::max())) {
+ *pszDirectory = OString(configDir, len);
+ return true;
+ }
+ }
+ return false;
+}
+
+#elif !defined(MACOSX) && !defined(IOS)
+
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory)
+{
+ assert(pszDirectory != nullptr);
+
+ char *pStr = getenv("XDG_CONFIG_HOME");
+
+ if (pStr == nullptr || pStr[0] == '\0' || access(pStr, 0) != 0)
+ {
+ // a default equal to $HOME/.config should be used.
+ OString home;
+ if (!osl_psz_getHomeDir(Security, &home))
+ return false;
+ auto const config = OString(home + "/.config");
+
+ // try to create dir if not present
+ bool dirOK = true;
+ if (mkdir(config.getStr(), S_IRWXU) != 0)
+ {
+ int e = errno;
+ if (e != EEXIST)
+ {
+ SAL_WARN(
+ "sal.osl",
+ "mkdir(" << config << "): errno=" << e);
+ dirOK = false;
+ }
+ }
+ if (dirOK)
+ {
+ // check file type and permissions
+ struct stat st;
+ if (stat(config.getStr(), &st) != 0)
+ {
+ SAL_INFO("sal.osl","Could not stat $HOME/.config");
+ dirOK = false;
+ }
+ else
+ {
+ if (!S_ISDIR(st.st_mode))
+ {
+ SAL_INFO("sal.osl", "$HOME/.config is not a directory");
+ dirOK = false;
+ }
+ if (!(st.st_mode & S_IRUSR && st.st_mode & S_IWUSR && st.st_mode & S_IXUSR))
+ {
+ SAL_INFO("sal.osl", "$HOME/.config has bad permissions");
+ dirOK = false;
+ }
+ }
+ }
+
+ // if !dirOK, resort to HOME
+ if (dirOK)
+ home = config;
+ *pszDirectory = home;
+ }
+ else
+ {
+ auto const len = std::strlen(pStr);
+ if (len > o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+ return false;
+ }
+ *pszDirectory = OString(pStr, len);
+ }
+
+ return true;
+}
+
+#else
+
+/*
+ * FIXME: rewrite to use more flexible
+ * NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES)
+ * as soon as we can bump the baseline to Tiger (for NSApplicationSupportDirectory) and have
+ * support for Objective-C in the build environment
+ */
+
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory)
+{
+ assert(pszDirectory != nullptr);
+
+ OString home;
+ if( osl_psz_getHomeDir(Security, &home) )
+ {
+ *pszDirectory = home + "/Library/Application Support"; /* Used on iOS, too */
+ return true;
+ }
+
+ return false;
+}
+
+#endif
+
+sal_Bool SAL_CALL osl_isAdministrator(oslSecurity Security)
+{
+ oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+ if (pSecImpl == nullptr)
+ return false;
+
+ if (pSecImpl->m_pPasswd.pw_uid != 0)
+ return false;
+
+ return true;
+}
+
+void SAL_CALL osl_freeSecurityHandle(oslSecurity Security)
+{
+ deleteSecurityImpl(static_cast<oslSecurityImpl *>(Security));
+}
+
+sal_Bool SAL_CALL osl_loadUserProfile(SAL_UNUSED_PARAMETER oslSecurity)
+{
+ return false;
+}
+
+void SAL_CALL osl_unloadUserProfile(SAL_UNUSED_PARAMETER oslSecurity) {}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */