/*
* Load a jvm from "jvmpath" and initialize the invocation functions.
*/
jboolean
LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
{
HINSTANCE handle;
if (_launcher_debug) {
printf("JVM path is %s\n", jvmpath);
}
/* Load the Java VM DLL */
if ((handle = LoadLibrary(jvmpath)) == 0) {
ReportErrorMessage2("Error loading: %s", (char *)jvmpath, JNI_TRUE);
return JNI_FALSE;
}
/* Now get the function addresses */
ifn->CreateJavaVM =
(void *)GetProcAddress(handle, "JNI_CreateJavaVM");
ifn->GetDefaultJavaVMInitArgs =
(void *)GetProcAddress(handle, "JNI_GetDefaultJavaVMInitArgs");
if (ifn->CreateJavaVM == 0 || ifn->GetDefaultJavaVMInitArgs == 0) {
ReportErrorMessage2("Error: can't find JNI interfaces in: %s",
(char *)jvmpath, JNI_TRUE);
return JNI_FALSE;
}
return JNI_TRUE;
}
/*
* Load a jvm from "jvmpath" and initialize the invocation functions.
*/
jboolean
LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
{
HINSTANCE handle;
char crtpath[MAXPATHLEN];
if (_launcher_debug) {
printf("JVM path is %s\n", jvmpath);
}
/*
* The Microsoft C Runtime Library needs to be loaded first. A copy is
* assumed to be present in the "JRE path" directory. If it is not found
* there (or "JRE path" fails to resolve), skip the explicit load and let
* nature take its course, which is likely to be a failure to execute.
*/
if (GetJREPath(crtpath, MAXPATHLEN)) {
(void)strcat(crtpath, "\\bin\\" CRT_DLL); /* Add crt dll */
if (_launcher_debug) {
printf("CRT path is %s\n", crtpath);
}
if (_access(crtpath, 0) == 0) {
if (LoadLibrary(crtpath) == 0) {
ReportErrorMessage2("Error loading: %s", crtpath, JNI_TRUE);
return JNI_FALSE;
}
}
}
/* Load the Java VM DLL */
if ((handle = LoadLibrary(jvmpath)) == 0) {
ReportErrorMessage2("Error loading: %s", (char *)jvmpath, JNI_TRUE);
return JNI_FALSE;
}
/* Now get the function addresses */
ifn->CreateJavaVM =
(void *)GetProcAddress(handle, "JNI_CreateJavaVM");
ifn->GetDefaultJavaVMInitArgs =
(void *)GetProcAddress(handle, "JNI_GetDefaultJavaVMInitArgs");
if (ifn->CreateJavaVM == 0 || ifn->GetDefaultJavaVMInitArgs == 0) {
ReportErrorMessage2("Error: can't find JNI interfaces in: %s",
(char *)jvmpath, JNI_TRUE);
return JNI_FALSE;
}
return JNI_TRUE;
}
static jboolean
LoadMSVCRT()
{
// Only do this once
static int loaded = 0;
char crtpath[MAXPATHLEN];
if (!loaded) {
/*
* The Microsoft C Runtime Library needs to be loaded first. A copy is
* assumed to be present in the "JRE path" directory. If it is not found
* there (or "JRE path" fails to resolve), skip the explicit load and let
* nature take its course, which is likely to be a failure to execute.
*/
if (GetJREPath(crtpath, MAXPATHLEN)) {
(void)strcat(crtpath, "\\bin\\" CRT_DLL); /* Add crt dll */
if (_launcher_debug) {
printf("CRT path is %s\n", crtpath);
}
if (_access(crtpath, 0) == 0) {
if (LoadLibrary(crtpath) == 0) {
ReportErrorMessage2("Error loading: %s", crtpath, JNI_TRUE);
return JNI_FALSE;
}
}
}
loaded = 1;
}
return JNI_TRUE;
}
/*
* Load a jvm from "jvmpath" and initialize the invocation functions.
*/
jboolean
LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
{
#ifdef GAMMA
/* JVM is directly linked with gamma launcher; no Loadlibrary() */
ifn->CreateJavaVM = JNI_CreateJavaVM;
ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs;
return JNI_TRUE;
#else
HINSTANCE handle;
if (_launcher_debug) {
printf("JVM path is %s\n", jvmpath);
}
/* The Microsoft C Runtime Library needs to be loaded first. */
LoadMSVCRT();
/* Load the Java VM DLL */
if ((handle = LoadLibrary(jvmpath)) == 0) {
ReportErrorMessage2("Error loading: %s", (char *)jvmpath, JNI_TRUE);
return JNI_FALSE;
}
/* Now get the function addresses */
ifn->CreateJavaVM =
(void *)GetProcAddress(handle, "JNI_CreateJavaVM");
ifn->GetDefaultJavaVMInitArgs =
(void *)GetProcAddress(handle, "JNI_GetDefaultJavaVMInitArgs");
if (ifn->CreateJavaVM == 0 || ifn->GetDefaultJavaVMInitArgs == 0) {
ReportErrorMessage2("Error: can't find JNI interfaces in: %s",
(char *)jvmpath, JNI_TRUE);
return JNI_FALSE;
}
return JNI_TRUE;
#endif /* ifndef GAMMA */
}
/*
* Parses command line arguments. Returns JNI_FALSE if launcher
* should exit without starting vm (e.g. certain version and usage
* options); returns JNI_TRUE if vm needs to be started to process
* given options. *pret (the launcher process return value) is set to
* 0 for a normal exit.
*/
static jboolean
ParseArguments(int *pargc, char ***pargv, char **pjarfile,
char **pclassname, int *pret)
{
int argc = *pargc;
char **argv = *pargv;
jboolean jarflag = JNI_FALSE;
char *arg;
*pret = 1;
while ((arg = *argv) != 0 && *arg == '-') {
argv++; --argc;
if (strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) {
if (argc < 1) {
ReportErrorMessage2("%s requires class path specification",
arg, JNI_TRUE);
PrintUsage();
return JNI_FALSE;
}
SetClassPath(*argv);
argv++; --argc;
} else if (strcmp(arg, "-jar") == 0) {
jarflag = JNI_TRUE;
} else if (strcmp(arg, "-help") == 0 ||
strcmp(arg, "-h") == 0 ||
strcmp(arg, "-?") == 0) {
PrintUsage();
*pret = 0;
return JNI_FALSE;
} else if (strcmp(arg, "-version") == 0) {
printVersion = JNI_TRUE;
return JNI_TRUE;
} else if (strcmp(arg, "-showversion") == 0) {
showVersion = JNI_TRUE;
} else if (strcmp(arg, "-X") == 0) {
*pret = PrintXUsage();
return JNI_FALSE;
/*
* The following case provide backward compatibility with old-style
* command line options.
*/
} else if (strcmp(arg, "-fullversion") == 0) {
fprintf(stderr, "%s full version \"%s\"\n", progname,
FULL_VERSION);
*pret = 0;
return JNI_FALSE;
} else if (strcmp(arg, "-verbosegc") == 0) {
AddOption("-verbose:gc", NULL);
} else if (strcmp(arg, "-t") == 0) {
AddOption("-Xt", NULL);
} else if (strcmp(arg, "-tm") == 0) {
AddOption("-Xtm", NULL);
} else if (strcmp(arg, "-debug") == 0) {
AddOption("-Xdebug", NULL);
} else if (strcmp(arg, "-noclassgc") == 0) {
AddOption("-Xnoclassgc", NULL);
} else if (strcmp(arg, "-Xfuture") == 0) {
AddOption("-Xverify:all", NULL);
} else if (strcmp(arg, "-verify") == 0) {
AddOption("-Xverify:all", NULL);
} else if (strcmp(arg, "-verifyremote") == 0) {
AddOption("-Xverify:remote", NULL);
} else if (strcmp(arg, "-noverify") == 0) {
AddOption("-Xverify:none", NULL);
} else if (strcmp(arg, "-XXsuppressExitMessage") == 0) {
noExitErrorMessage = 1;
} else if (strncmp(arg, "-prof", 5) == 0) {
char *p = arg + 5;
char *tmp = MemAlloc(strlen(arg) + 50);
if (*p) {
sprintf(tmp, "-Xrunhprof:cpu=old,file=%s", p + 1);
} else {
sprintf(tmp, "-Xrunhprof:cpu=old,file=java.prof");
}
AddOption(tmp, NULL);
} else if (strncmp(arg, "-ss", 3) == 0 ||
strncmp(arg, "-oss", 4) == 0 ||
strncmp(arg, "-ms", 3) == 0 ||
strncmp(arg, "-mx", 3) == 0) {
char *tmp = MemAlloc(strlen(arg) + 6);
sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
AddOption(tmp, NULL);
} else if (strcmp(arg, "-checksource") == 0 ||
strcmp(arg, "-cs") == 0 ||
strcmp(arg, "-noasyncgc") == 0) {
/* No longer supported */
fprintf(stderr,
"Warning: %s option is no longer supported.\n",
arg);
} else if (strncmp(arg, "-version:", 9) == 0 ||
strcmp(arg, "-no-jre-restrict-search") == 0 ||
strcmp(arg, "-jre-restrict-search") == 0) {
; /* Ignore machine independent options already handled */
} else if (RemovableMachineDependentOption(arg) ) {
; /* Do not pass option to vm. */
}
else {
AddOption(arg, NULL);
}
}
if (--argc >= 0) {
if (jarflag) {
*pjarfile = *argv++;
*pclassname = 0;
} else {
*pjarfile = 0;
*pclassname = *argv++;
}
*pargc = argc;
*pargv = argv;
}
return JNI_TRUE;
}
/*
* The SelectVersion() routine ensures that an appropriate version of
* the JRE is running. The specification for the appropriate version
* is obtained from either the manifest of a jar file (preferred) or
* from command line options.
*/
static void
SelectVersion(int argc, char **argv, char **main_class)
{
char *arg;
char **new_argv;
char **new_argp;
char *operand;
char *version = NULL;
char *jre = NULL;
int jarflag = 0;
int restrict_search = -1; /* -1 implies not known */
manifest_info info;
char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
char *env_in;
int res;
/*
* If the version has already been selected, set *main_class
* with the value passed through the environment (if any) and
* simply return.
*/
if ((env_in = getenv(ENV_ENTRY)) != NULL) {
if (*env_in != '\0')
*main_class = strdup(env_in);
return;
}
/*
* Scan through the arguments for options relevant to multiple JRE
* support. For reference, the command line syntax is defined as:
*
* SYNOPSIS
* java [options] class [argument...]
*
* java [options] -jar file.jar [argument...]
*
* As the scan is performed, make a copy of the argument list with
* the version specification options (new to 1.5) removed, so that
* a version less than 1.5 can be exec'd.
*/
new_argv = MemAlloc((argc + 1) * sizeof(char*));
new_argv[0] = argv[0];
new_argp = &new_argv[1];
argc--;
argv++;
while ((arg = *argv) != 0 && *arg == '-') {
if (strncmp(arg, "-version:", 9) == 0) {
version = arg + 9;
} else if (strcmp(arg, "-jre-restrict-search") == 0) {
restrict_search = 1;
} else if (strcmp(arg, "-no-jre-restrict-search") == 0) {
restrict_search = 0;
} else {
if (strcmp(arg, "-jar") == 0)
jarflag = 1;
/* deal with "unfortunate" classpath syntax */
if (strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) {
if (argc >= 1) {
*new_argp++ = arg;
argc--;
argv++;
arg = *argv;
}
}
*new_argp++ = arg;
}
argc--;
argv++;
}
if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
operand = NULL;
} else {
argc--;
*new_argp++ = operand = *argv++;
}
while (argc-- > 0) /* Copy over [argument...] */
*new_argp++ = *argv++;
*new_argp = NULL;
/*
* If there is a jar file, read the manifest. If the jarfile can't be
* read, the manifest can't be read from the jar file, or the manifest
* is corrupt, issue the appropriate error messages and exit.
*
* Even if there isn't a jar file, construct a manifest_info structure
* containing the command line information. Its a convenient way to carry
* this data around.
*/
if (jarflag && operand) {
if ((res = parse_manifest(operand, &info)) != 0) {
if (res == -1)
ReportErrorMessage2("Unable to access jarfile %s",
operand, JNI_TRUE);
else
ReportErrorMessage2("Invalid or corrupt jarfile %s",
operand, JNI_TRUE);
exit(1);
}
} else {
info.manifest_version = NULL;
info.main_class = NULL;
info.jre_version = NULL;
info.jre_restrict_search = 0;
}
/*
* The JRE-Version and JRE-Restrict-Search values (if any) from the
* manifest are overwritten by any specified on the command line.
*/
if (version != NULL)
info.jre_version = version;
if (restrict_search != -1)
info.jre_restrict_search = restrict_search;
/*
* "Valid" returns (other than unrecoverable errors) follow. Set
* main_class as a side-effect of this routine.
*/
if (info.main_class != NULL)
*main_class = strdup(info.main_class);
/*
* If no version selection information is found either on the command
* line or in the manifest, simply return.
*/
if (info.jre_version == NULL) {
free_manifest();
free(new_argv);
return;
}
/*
* Check for correct syntax of the version specification (JSR 56).
*/
if (!valid_version_string(info.jre_version)) {
ReportErrorMessage2("Syntax error in version specification \"%s\"",
info.jre_version, JNI_TRUE);
exit(1);
}
/*
* Find the appropriate JVM on the system. Just to be as forgiving as
* possible, if the standard algorithms don't locate an appropriate
* jre, check to see if the one running will satisfy the requirements.
* This can happen on systems which haven't been set-up for multiple
* JRE support.
*/
jre = LocateJRE(&info);
if (_launcher_debug)
printf("JRE-Version = %s, JRE-Restrict-Search = %s Selected = %s\n",
(info.jre_version?info.jre_version:"null"),
(info.jre_restrict_search?"true":"false"), (jre?jre:"null"));
if (jre == NULL) {
if (acceptable_release(FULL_VERSION, info.jre_version)) {
free_manifest();
free(new_argv);
return;
} else {
ReportErrorMessage2(
"Unable to locate JRE meeting specification \"%s\"",
info.jre_version, JNI_TRUE);
exit(1);
}
}
/*
* If I'm not the chosen one, exec the chosen one. Returning from
* ExecJRE indicates that I am indeed the chosen one.
*
* The private environment variable _JAVA_VERSION_SET is used to
* prevent the chosen one from re-reading the manifest file and
* using the values found within to override the (potential) command
* line flags stripped from argv (because the target may not
* understand them). Passing the MainClass value is an optimization
* to avoid locating, expanding and parsing the manifest extra
* times.
*/
if (info.main_class != NULL) {
if (strlen(info.main_class) <= MAXNAMELEN) {
(void)strcat(env_entry, info.main_class);
} else {
ReportErrorMessage("Error: main-class: attribute exceeds system limits\n", JNI_TRUE);
exit(1);
}
}
(void)putenv(env_entry);
ExecJRE(jre, new_argv);
free_manifest();
free(new_argv);
return;
}
/*
* Checks the command line options to find which JVM type was
* specified. If no command line option was given for the JVM type,
* the default type is used. The environment variable
* JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
* checked as ways of specifying which JVM type to invoke.
*/
char *
CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
int i, argi;
int argc;
char **newArgv;
int newArgvIdx = 0;
int isVMType;
int jvmidx = -1;
char *jvmtype = getenv("JDK_ALTERNATE_VM");
argc = *pargc;
/* To make things simpler we always copy the argv array */
newArgv = MemAlloc((argc + 1) * sizeof(char *));
/* The program name is always present */
newArgv[newArgvIdx++] = (*argv)[0];
for (argi = 1; argi < argc; argi++) {
char *arg = (*argv)[argi];
isVMType = 0;
#ifdef JAVA_ARGS
if (arg[0] != '-') {
newArgv[newArgvIdx++] = arg;
continue;
}
#else
if (strcmp(arg, "-classpath") == 0 ||
strcmp(arg, "-cp") == 0) {
newArgv[newArgvIdx++] = arg;
argi++;
if (argi < argc) {
newArgv[newArgvIdx++] = (*argv)[argi];
}
continue;
}
if (arg[0] != '-') break;
#endif
/* Did the user pass an explicit VM type? */
i = KnownVMIndex(arg);
if (i >= 0) {
jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
isVMType = 1;
*pargc = *pargc - 1;
}
/* Did the user specify an "alternate" VM? */
else if (strncmp(arg, "-XXaltjvm=", 10) == 0 || strncmp(arg, "-J-XXaltjvm=", 12) == 0) {
isVMType = 1;
jvmtype = arg+((arg[1]=='X')? 10 : 12);
jvmidx = -1;
}
if (!isVMType) {
newArgv[newArgvIdx++] = arg;
}
}
/*
* Finish copying the arguments if we aborted the above loop.
* NOTE that if we aborted via "break" then we did NOT copy the
* last argument above, and in addition argi will be less than
* argc.
*/
while (argi < argc) {
newArgv[newArgvIdx++] = (*argv)[argi];
argi++;
}
/* argv is null-terminated */
newArgv[newArgvIdx] = 0;
/* Copy back argv */
*argv = newArgv;
*pargc = newArgvIdx;
/* use the default VM type if not specified (no alias processing) */
if (jvmtype == NULL)
return knownVMs[0].name+1;
/* if using an alternate VM, no alias processing */
if (jvmidx < 0)
return jvmtype;
/* Resolve aliases first */
{
int loopCount = 0;
while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
if (loopCount > knownVMsCount) {
if (!speculative) {
ReportErrorMessage("Error: Corrupt jvm.cfg file; cycle in alias list.",
JNI_TRUE);
exit(1);
} else {
return "ERROR";
/* break; */
}
}
if (nextIdx < 0) {
if (!speculative) {
ReportErrorMessage2("Error: Unable to resolve VM alias %s",
knownVMs[jvmidx].alias, JNI_TRUE);
exit(1);
} else {
return "ERROR";
}
}
jvmidx = nextIdx;
jvmtype = knownVMs[jvmidx].name+1;
loopCount++;
}
}
switch (knownVMs[jvmidx].flag) {
case VM_WARN:
if (!speculative) {
fprintf(stderr, "Warning: %s VM not supported; %s VM will be used\n",
jvmtype, knownVMs[0].name + 1);
}
jvmtype = knownVMs[jvmidx=0].name + 1;
/* fall through */
case VM_KNOWN:
break;
case VM_ERROR:
if (!speculative) {
ReportErrorMessage2("Error: %s VM not supported", jvmtype, JNI_TRUE);
exit(1);
} else {
return "ERROR";
}
}
return jvmtype;
}
/*
* Read the jvm.cfg file and fill the knownJVMs[] array.
*
* The functionality of the jvm.cfg file is subject to change without
* notice and the mechanism will be removed in the future.
*
* The lexical structure of the jvm.cfg file is as follows:
*
* jvmcfg := { vmLine }
* vmLine := knownLine
* | aliasLine
* | warnLine
* | errorLine
* | commentLine
* knownLine := flag "KNOWN" EOL
* warnLine := flag "WARN" EOL
* errorLine := flag "ERROR" EOL
* aliasLine := flag "ALIASED_TO" flag EOL
* commentLine := "#" text EOL
* flag := "-" identifier
*
* The semantics are that when someone specifies a flag on the command line:
* - if the flag appears on a knownLine, then the identifier is used as
* the name of the directory holding the JVM library (the name of the JVM).
* - if the flag appears as the first flag on an aliasLine, the identifier
* of the second flag is used as the name of the JVM.
* - if the flag appears on a warnLine, the identifier is used as the
* name of the JVM, but a warning is generated.
* - if the flag appears on an errorLine, an error is generated.
* If no flag is given on the command line, the first vmLine of the jvm.cfg
* file determines the name of the JVM.
*
* The intent of the jvm.cfg file is to allow several JVM libraries to
* be installed in different subdirectories of a single JRE installation,
* for space-savings and convenience in testing.
* The intent is explicitly not to provide a full aliasing or predicate
* mechanism.
*/
jint
ReadKnownVMs(const char *jrepath, char * arch, jboolean speculative)
{
FILE *jvmCfg;
char jvmCfgName[MAXPATHLEN+20];
char line[MAXPATHLEN+20];
int cnt = 0;
int lineno = 0;
jlong start, end;
int vmType;
char *tmpPtr;
char *altVMName;
static char *whiteSpace = " \t";
if (_launcher_debug) {
start = CounterGet();
}
strcpy(jvmCfgName, jrepath);
strcat(jvmCfgName, FILESEP "lib" FILESEP);
strcat(jvmCfgName, arch);
strcat(jvmCfgName, FILESEP "jvm.cfg");
jvmCfg = fopen(jvmCfgName, "r");
if (jvmCfg == NULL) {
if (!speculative) {
ReportErrorMessage2("Error: could not open `%s'", jvmCfgName,
JNI_TRUE);
exit(1);
} else {
return -1;
}
}
while (fgets(line, sizeof(line), jvmCfg) != NULL) {
vmType = VM_UNKNOWN;
lineno++;
if (line[0] == '#')
continue;
if (line[0] != '-') {
fprintf(stderr, "Warning: no leading - on line %d of `%s'\n",
lineno, jvmCfgName);
}
if (cnt >= knownVMsLimit) {
GrowKnownVMs(cnt);
}
line[strlen(line)-1] = '\0'; /* remove trailing newline */
tmpPtr = line + strcspn(line, whiteSpace);
if (*tmpPtr == 0) {
fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n",
lineno, jvmCfgName);
} else {
/* Null-terminate this string for strdup below */
*tmpPtr++ = 0;
tmpPtr += strspn(tmpPtr, whiteSpace);
if (*tmpPtr == 0) {
fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n",
lineno, jvmCfgName);
} else {
if (!strncmp(tmpPtr, "KNOWN", strlen("KNOWN"))) {
vmType = VM_KNOWN;
} else if (!strncmp(tmpPtr, "ALIASED_TO", strlen("ALIASED_TO"))) {
tmpPtr += strcspn(tmpPtr, whiteSpace);
if (*tmpPtr != 0) {
tmpPtr += strspn(tmpPtr, whiteSpace);
}
if (*tmpPtr == 0) {
fprintf(stderr, "Warning: missing VM alias on line %d of `%s'\n",
lineno, jvmCfgName);
} else {
/* Null terminate altVMName */
altVMName = tmpPtr;
tmpPtr += strcspn(tmpPtr, whiteSpace);
*tmpPtr = 0;
vmType = VM_ALIASED_TO;
}
} else if (!strncmp(tmpPtr, "WARN", strlen("WARN"))) {
vmType = VM_WARN;
} else if (!strncmp(tmpPtr, "ERROR", strlen("ERROR"))) {
vmType = VM_ERROR;
} else {
fprintf(stderr, "Warning: unknown VM type on line %d of `%s'\n",
lineno, &jvmCfgName[0]);
vmType = VM_KNOWN;
}
}
}
if (_launcher_debug)
printf("jvm.cfg[%d] = ->%s<-\n", cnt, line);
if (vmType != VM_UNKNOWN) {
knownVMs[cnt].name = strdup(line);
knownVMs[cnt].flag = vmType;
switch (vmType) {
default:
break;
case VM_ALIASED_TO:
knownVMs[cnt].alias = strdup(altVMName);
if (_launcher_debug) {
printf(" name: %s vmType: %s alias: %s\n",
knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
}
break;
}
cnt++;
}
}
fclose(jvmCfg);
knownVMsCount = cnt;
if (_launcher_debug) {
end = CounterGet();
printf("%ld micro seconds to parse jvm.cfg\n",
(long)(jint)Counter2Micros(end-start));
}
return cnt;
}
