400 lines
11 KiB
C++
400 lines
11 KiB
C++
// natSystemProperties.cc - Implementation of native side of
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// SystemProperties class.
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/* Copyright (C) 2005 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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#include <config.h>
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#include <platform.h>
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#include <stdlib.h>
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#include <errno.h>
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#ifdef HAVE_UNAME
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#include <sys/utsname.h>
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#endif
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#ifdef HAVE_LOCALE_H
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#include <locale.h>
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#endif
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#ifdef HAVE_LANGINFO_H
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#include <langinfo.h>
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#endif
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#include <gcj/cni.h>
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#include <jvm.h>
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#include <java-props.h>
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#include <gnu/classpath/SystemProperties.h>
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#include <java/lang/String.h>
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#include <jni.h>
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char *_Jv_Module_Load_Path = NULL;
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#ifdef USE_LTDL
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#include <ltdl.h>
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void
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_Jv_SetDLLSearchPath (const char *path)
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{
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_Jv_Module_Load_Path = strdup (path);
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}
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#else
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void
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_Jv_SetDLLSearchPath (const char *)
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{
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// Nothing.
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}
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#endif /* USE_LTDL */
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#if ! defined (DEFAULT_FILE_ENCODING) && defined (HAVE_ICONV) \
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&& defined (HAVE_NL_LANGINFO)
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static const char *
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file_encoding ()
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{
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setlocale (LC_CTYPE, "");
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const char *e = nl_langinfo (CODESET);
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if (e == NULL || *e == '\0')
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e = "8859_1";
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return e;
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}
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#define DEFAULT_FILE_ENCODING file_encoding ()
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#endif
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#ifndef DEFAULT_FILE_ENCODING
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#define DEFAULT_FILE_ENCODING "8859_1"
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#endif
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static const char *default_file_encoding = DEFAULT_FILE_ENCODING;
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#if HAVE_GETPWUID_R
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/* Use overload resolution to find out the signature of getpwuid_r. */
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/* This is Posix getpwuid_r. */
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template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
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static inline int
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getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
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T_buf *buf_r, T_len len_r,
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T_passwd **pwd_entry_ptr),
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uid_t user_id, struct passwd *pwd_r,
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char *buf_r, size_t len_r, struct passwd **pwd_entry)
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{
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return getpwuid_r (user_id, pwd_r, buf_r, len_r, pwd_entry);
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}
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/* This is used on HPUX 10.20 */
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template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
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static inline int
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getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
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T_buf *buf_r, T_len len_r),
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uid_t user_id, struct passwd *pwd_r,
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char *buf_r, size_t len_r, struct passwd **pwd_entry)
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{
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return getpwuid_r (user_id, pwd_r, buf_r, len_r);
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}
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/* This is used on IRIX 5.2. */
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template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
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static inline int
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getpwuid_adaptor(T_passwd * (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
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T_buf *buf_r, T_len len_r),
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uid_t user_id, struct passwd *pwd_r,
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char *buf_r, size_t len_r, struct passwd **pwd_entry)
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{
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*pwd_entry = getpwuid_r (user_id, pwd_r, buf_r, len_r);
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return (*pwd_entry == NULL) ? errno : 0;
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}
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#endif
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void
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gnu::classpath::SystemProperties::insertSystemProperties (java::util::Properties *newprops)
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{
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// A convenience define.
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#define SET(Prop,Val) \
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newprops->put(JvNewStringLatin1 (Prop), JvNewStringLatin1 (Val))
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// A mixture of the Java Product Versioning Specification
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// (introduced in 1.2), and earlier versioning properties. Some
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// programs rely on seeing values that they expect, so we claim to
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// be a 1.4-ish VM for their sake.
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SET ("java.version", JV_VERSION);
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SET ("java.runtime.version", JV_VERSION);
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SET ("java.vendor", "Free Software Foundation, Inc.");
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SET ("java.vendor.url", "http://gcc.gnu.org/java/");
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SET ("java.class.version", "46.0");
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SET ("java.vm.specification.version", "1.0");
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SET ("java.vm.specification.name", "Java(tm) Virtual Machine Specification");
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SET ("java.vm.specification.vendor", "Sun Microsystems Inc.");
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SET ("java.vm.version", __VERSION__);
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SET ("java.vm.vendor", "Free Software Foundation, Inc.");
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SET ("java.vm.name", "GNU libgcj");
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SET ("java.specification.version", JV_API_VERSION);
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SET ("java.specification.name", "Java(tm) Platform API Specification");
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SET ("java.specification.vendor", "Sun Microsystems Inc.");
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char value[100];
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#define NAME "GNU libgcj "
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strcpy (value, NAME);
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strncpy (value + sizeof (NAME) - 1, __VERSION__,
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sizeof(value) - sizeof(NAME));
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value[sizeof (value) - 1] = '\0';
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jstring version = JvNewStringLatin1 (value);
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newprops->put (JvNewStringLatin1 ("java.fullversion"), version);
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newprops->put (JvNewStringLatin1 ("java.vm.info"), version);
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// This definition is rather arbitrary: we choose $(prefix). In
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// part we do this because most people specify only --prefix and
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// nothing else when installing gcj. Plus, people are free to
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// redefine `java.home' with `-D' if necessary.
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SET ("java.home", JAVA_HOME);
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SET ("gnu.classpath.home", PREFIX);
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// This is set to $(libdir) because we use this to find .security
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// files at runtime.
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char val2[sizeof ("file://") + sizeof (LIBDIR) + 1];
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strcpy (val2, "file://");
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strcat (val2, LIBDIR);
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SET ("gnu.classpath.home.url", val2);
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SET ("file.encoding", default_file_encoding);
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#ifdef HAVE_UNAME
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struct utsname u;
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if (! uname (&u))
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{
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SET ("os.name", u.sysname);
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SET ("os.version", u.release);
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// Normalize x86 architecture names to "i386" (except on Windows, which
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// is handled in win32.cc).
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if (u.machine[0] == 'i'
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&& u.machine[1] != 0
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&& u.machine[2] == '8'
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&& u.machine[3] == '6'
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&& u.machine[4] == 0)
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SET ("os.arch", "i386");
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else
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SET ("os.arch", u.machine);
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}
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else
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{
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SET ("os.name", "unknown");
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SET ("os.arch", "unknown");
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SET ("os.version", "unknown");
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}
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#endif /* HAVE_UNAME */
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#ifndef NO_GETUID
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#ifdef HAVE_PWD_H
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uid_t user_id = getuid ();
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struct passwd *pwd_entry;
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#ifdef HAVE_GETPWUID_R
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struct passwd pwd_r;
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size_t len_r = 200;
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char *buf_r = (char *) _Jv_AllocBytes (len_r);
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while (buf_r != NULL)
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{
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int r = getpwuid_adaptor (getpwuid_r, user_id, &pwd_r,
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buf_r, len_r, &pwd_entry);
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if (r == 0)
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break;
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else if (r != ERANGE)
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{
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pwd_entry = NULL;
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break;
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}
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len_r *= 2;
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buf_r = (char *) _Jv_AllocBytes (len_r);
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}
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#else
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pwd_entry = getpwuid (user_id);
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#endif /* HAVE_GETPWUID_R */
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if (pwd_entry != NULL)
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{
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SET ("user.name", pwd_entry->pw_name);
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SET ("user.home", pwd_entry->pw_dir);
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}
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#endif /* HAVE_PWD_H */
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#endif /* NO_GETUID */
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#ifdef HAVE_GETCWD
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#ifdef HAVE_UNISTD_H
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/* Use getcwd to set "user.dir". */
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int buflen = 250;
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char *buffer = (char *) malloc (buflen);
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while (buffer != NULL)
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{
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if (getcwd (buffer, buflen) != NULL)
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{
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SET ("user.dir", buffer);
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break;
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}
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if (errno != ERANGE)
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break;
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buflen = 2 * buflen;
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buffer = (char *) realloc (buffer, buflen);
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}
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if (buffer != NULL)
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free (buffer);
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#endif /* HAVE_UNISTD_H */
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#endif /* HAVE_GETCWD */
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// Set user locale properties based on setlocale()
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#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
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// We let the user choose the locale. However, since Java differs
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// from POSIX, we arbitrarily pick LC_MESSAGES as determining the
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// Java locale. We can't use LC_ALL because it might return a full
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// list of all the settings. If we don't have LC_MESSAGES then we
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// just default to `en_US'.
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setlocale (LC_ALL, "");
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char *locale = setlocale (LC_MESSAGES, "");
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if (locale && strlen (locale) >= 2)
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{
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char buf[3];
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buf[2] = '\0';
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// copy the first two chars to user.language
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strncpy (buf, locale, 2);
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SET ("user.language", buf);
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// if the next char is a '_', copy the two after that to user.region
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locale += 2;
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if (locale[0] == '_')
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{
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locale++;
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strncpy (buf, locale, 2);
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SET ("user.region", buf);
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}
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}
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else
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#endif /* HAVE_SETLOCALE and HAVE_LC_MESSAGES */
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{
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SET ("user.language", "en");
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SET ("user.region", "US");
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}
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// The java extensions directory.
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SET ("java.ext.dirs", JAVA_EXT_DIRS);
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// The endorsed directories that libgcj knows about by default.
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// This is a way to get other jars into the boot class loader
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// without overriding java.endorsed.dirs.
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SET ("gnu.gcj.runtime.endorsed.dirs", GCJ_ENDORSED_DIRS);
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// The path to libgcj's boot classes
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SET ("sun.boot.class.path", BOOT_CLASS_PATH);
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// If there is a default system database, set it.
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SET ("gnu.gcj.precompiled.db.path", LIBGCJ_DEFAULT_DATABASE);
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// Set some properties according to whatever was compiled in with
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// `-D'. Important: after this point, the only properties that
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// should be set are those which either the user cannot meaningfully
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// override, or which augment whatever value the user has provided.
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for (int i = 0; i < _Jv_Properties_Count; ++i)
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{
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const char *s, *p;
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// Find the `='.
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for (s = p = _Jv_Compiler_Properties[i]; *s && *s != '='; ++s)
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;
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jstring name = JvNewStringLatin1 (p, s - p);
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jstring val = JvNewStringLatin1 (*s == '=' ? s + 1 : s);
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newprops->put (name, val);
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}
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// Set the system properties from the user's environment.
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#ifndef DISABLE_GETENV_PROPERTIES
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if (_Jv_Environment_Properties)
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{
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size_t i = 0;
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while (_Jv_Environment_Properties[i].key)
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{
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SET (_Jv_Environment_Properties[i].key,
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_Jv_Environment_Properties[i].value);
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i++;
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}
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}
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#endif
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// The name used to invoke this process (argv[0] in C).
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SET ("gnu.gcj.progname", _Jv_GetSafeArg (0));
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// Allow platform specific settings and overrides.
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_Jv_platform_initProperties (newprops);
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// If java.library.path is set, tell libltdl so we search the new
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// directories as well. FIXME: does this work properly on Windows?
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::java::lang::String *path = newprops->getProperty(JvNewStringLatin1("java.library.path"));
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if (path)
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{
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char *val = (char *) _Jv_Malloc (JvGetStringUTFLength (path) + 1);
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jsize total = JvGetStringUTFRegion (path, 0, path->length(), val);
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val[total] = '\0';
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_Jv_SetDLLSearchPath (val);
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_Jv_Free (val);
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}
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else
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{
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// Set a value for user code to see.
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#ifdef USE_LTDL
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char *libpath = getenv (LTDL_SHLIBPATH_VAR);
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if (libpath)
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newprops->put(JvNewStringLatin1 ("java.library.path"),
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JvNewStringLatin1 (libpath));
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else
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SET ("java.library.path", "");
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#else
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SET ("java.library.path", "");
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#endif
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}
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// If java.class.path is still not set then set it according to the
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// CLASSPATH environment variable if given. See gij.cc main () and
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// prims.cc _Jv_CreateJavaVM () for all the ways this could have
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// been set much earlier.
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// If CLASSPATH isn't set or if the path is empty fall back to "."
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path = newprops->getProperty(JvNewStringLatin1("java.class.path"));
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if (!path)
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{
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char *classpath = getenv("CLASSPATH");
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if (classpath && classpath[0] != 0)
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{
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path = JvNewStringLatin1 (classpath);
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newprops->put(JvNewStringLatin1 ("java.class.path"), path);
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}
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}
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if (!path || path->length() == 0)
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SET ("java.class.path", ".");
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}
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jboolean
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gnu::classpath::SystemProperties::isWordsBigEndian (void)
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{
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union
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{
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long lval;
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char cval;
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} u;
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u.lval = 1;
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return u.cval == 0;
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}
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