// static
void
XPCThrower::Verbosify(XPCCallContext& ccx,
char** psz, PRBool own)
{
char* sz = nsnull;
if(ccx.HasInterfaceAndMember())
{
XPCNativeInterface* iface = ccx.GetInterface();
jsid id = ccx.GetMember()->GetName();
JSAutoByteString bytes;
const char *name = JSID_IS_VOID(id) ? "Unknown" : bytes.encode(ccx, JSID_TO_STRING(id));
if(!name)
{
name = "";
}
sz = JS_smprintf("%s [%s.%s]", *psz, iface->GetNameString(), name);
}
if(sz)
{
if(own)
JS_smprintf_free(*psz);
*psz = sz;
}
}
static JSBool
rpmfc_enumerate(JSContext *cx, JSObject *obj, JSIterateOp op,
jsval *statep, jsid *idp)
{
_ENUMERATE_DEBUG_ENTRY(_debug < 0);
switch (op) {
case JSENUMERATE_INIT:
case JSENUMERATE_INIT_ALL:
*statep = JSVAL_VOID;
if (idp)
*idp = JSVAL_ZERO;
break;
case JSENUMERATE_NEXT:
*statep = JSVAL_VOID;
if (!JSID_IS_VOID(*idp))
break;
/*@fallthrough@*/
case JSENUMERATE_DESTROY:
*statep = JSVAL_NULL;
break;
}
return JS_TRUE;
}
static JSBool
rpmps_enumerate(JSContext *cx, JSObject *obj, JSIterateOp op,
jsval *statep, jsid *idp)
{
_ENUMERATE_DEBUG_ENTRY(_debug);
#ifdef DYING
switch (op) {
case JSENUMERATE_INIT:
case JSENUMERATE_INIT_ALL:
if ((iterator = JS_NewPropertyIterator(cx, obj)) == NULL)
goto exit;
*statep = OBJECT_TO_JSVAL(iterator);
if (idp)
*idp = JSVAL_ZERO;
break;
case JSENUMERATE_NEXT:
iterator = (JSObject *) JSVAL_TO_OBJECT(*statep);
if (!JS_NextProperty(cx, iterator, idp))
goto exit;
if (!JSID_IS_VOID(*idp))
break;
/*@fallthrough@*/
case JSENUMERATE_DESTROY:
/* Allow our iterator object to be GC'd. */
*statep = JSVAL_NULL;
break;
}
#else
{ static const char hex[] = "0123456789abcdef";
const char * s;
char name[2];
JSString * valstr;
char value[5];
for (s = "AaBbCc"; *s != '\0'; s++) {
name[0] = s[0]; name[1] = '\0';
value[0] = '0'; value[1] = 'x';
value[2] = hex[(name[0] >> 4) & 0xf];
value[3] = hex[(name[0] ) & 0xf];
value[4] = '\0';
if ((valstr = JS_NewStringCopyZ(cx, value)) == NULL
|| !JS_DefineProperty(cx, obj, name, STRING_TO_JSVAL(valstr),
NULL, NULL, JSPROP_ENUMERATE))
goto exit;
}
}
#endif
exit:
return JS_TRUE;
}
static JSBool
rpmdir_enumerate(JSContext *cx, JSObject *obj, JSIterateOp op,
jsval *statep, jsid *idp)
{
void * ptr = JS_GetInstancePrivate(cx, obj, &rpmdirClass, NULL);
DIR * dir = ptr;
struct dirent * dp;
unsigned int ix = 0;
/* XXX VG: JS_Enumerate (jsobj.c:4211) doesn't initialize some fields. */
_ENUMERATE_DEBUG_ENTRY(_debug < 0);
switch (op) {
case JSENUMERATE_INIT:
case JSENUMERATE_INIT_ALL:
if (idp)
*idp = JSVAL_ZERO;
*statep = INT_TO_JSVAL(ix);
if (_debug)
fprintf(stderr, "\tINIT dir %p\n", dir);
break;
case JSENUMERATE_NEXT:
ix = JSVAL_TO_INT(*statep);
if ((dp = Readdir(dir)) != NULL) {
(void) JS_DefineElement(cx, obj,
ix, STRING_TO_JSVAL(JS_NewStringCopyZ(cx, dp->d_name)),
NULL, NULL, JSPROP_ENUMERATE);
JS_ValueToId(cx, *statep, idp);
if (_debug)
fprintf(stderr, "\tNEXT dir %p[%u] dirent %p \"%s\"\n", dir, ix, dp, dp->d_name);
*statep = INT_TO_JSVAL(ix+1);
} else
*idp = JSVAL_VOID;
if (!JSID_IS_VOID(*idp))
break;
/*@fallthrough@*/
case JSENUMERATE_DESTROY:
ix = JSVAL_TO_INT(*statep);
(void) JS_DefineProperty(cx, obj, "length", INT_TO_JSVAL(ix),
NULL, NULL, JSPROP_ENUMERATE);
if (_debug)
fprintf(stderr, "\tFINI dir %p[%u]\n", dir, ix);
*statep = JSVAL_NULL;
break;
}
return JS_TRUE;
}
// static
void
XPCThrower::Verbosify(XPCCallContext& ccx,
char** psz, PRBool own)
{
char* sz = nsnull;
if(ccx.HasInterfaceAndMember())
{
XPCNativeInterface* iface = ccx.GetInterface();
jsid id = JSID_VOID;
#ifdef XPC_IDISPATCH_SUPPORT
NS_ASSERTION(ccx.GetIDispatchMember() == nsnull ||
ccx.GetMember() == nsnull,
"Both IDispatch member and regular XPCOM member "
"were set in XPCCallContext");
if(ccx.GetIDispatchMember())
{
XPCDispInterface::Member * member =
reinterpret_cast<XPCDispInterface::Member*>(ccx.GetIDispatchMember());
if(member && JSID_IS_STRING(member->GetName()))
{
id = member->GetName();
}
}
else
#endif
{
id = ccx.GetMember()->GetName();
}
JSAutoByteString bytes;
const char *name = JSID_IS_VOID(id) ? "Unknown" : bytes.encode(ccx, JSID_TO_STRING(id));
if(!name)
{
name = "";
}
sz = JS_smprintf("%s [%s.%s]", *psz, iface->GetNameString(), name);
}
if(sz)
{
if(own)
JS_smprintf_free(*psz);
*psz = sz;
}
}
JSBool JsGlobal::event_enumerate(JSContext *cx, JSObject *obj, JSIterateOp enum_op,
jsval *statep, jsid *idp)
{
static log4cplus::Logger log = log4cplus::Logger::getInstance("fsm.JsContext.enumerate");
JSObject *iterator;
//fsm::env::Js::ToString objString(cx,OBJECT_TO_JSVAL(obj));
LOG4CPLUS_ERROR(log,"[_event] enumerate.");
switch (enum_op) {
case JSENUMERATE_INIT:
case JSENUMERATE_INIT_ALL:
LOG4CPLUS_TRACE(log, "enumerate [_event] Init properties.");
iterator = JS_NewPropertyIterator(cx, obj);
if (!iterator)
return JS_FALSE;
*statep = OBJECT_TO_JSVAL(iterator);
if (idp)
*idp = INT_TO_JSID(0);
break;
case JSENUMERATE_NEXT:
/*if (its_enum_fail) {
JS_ReportError(cx, "its enumeration failed");
return JS_FALSE;
}*/
LOG4CPLUS_TRACE(log, "enumerate [_event] next properties.");
iterator = (JSObject *) JSVAL_TO_OBJECT(*statep);
if (!JS_NextProperty(cx, iterator, idp))
return JS_FALSE;
if (!JSID_IS_VOID(*idp))
break;
/* Fall through. */
case JSENUMERATE_DESTROY:
/* Allow our iterator object to be GC'd. */
LOG4CPLUS_TRACE(log, "enumerate [_event] destroy properties.");
*statep = JSVAL_NULL;
break;
}
return JS_TRUE;
}
JSBool
XPCJSRuntime::OnJSContextNew(JSContext *cx)
{
NS_TIME_FUNCTION;
// if it is our first context then we need to generate our string ids
JSBool ok = JS_TRUE;
if(JSID_IS_VOID(mStrIDs[0]))
{
JS_SetGCParameterForThread(cx, JSGC_MAX_CODE_CACHE_BYTES, 16 * 1024 * 1024);
JSAutoRequest ar(cx);
for(uintN i = 0; i < IDX_TOTAL_COUNT; i++)
{
JSString* str = JS_InternString(cx, mStrings[i]);
if(!str || !JS_ValueToId(cx, STRING_TO_JSVAL(str), &mStrIDs[i]))
{
mStrIDs[0] = JSID_VOID;
ok = JS_FALSE;
break;
}
mStrJSVals[i] = STRING_TO_JSVAL(str);
}
}
if (!ok)
return JS_FALSE;
XPCPerThreadData* tls = XPCPerThreadData::GetData(cx);
if(!tls)
return JS_FALSE;
XPCContext* xpc = new XPCContext(this, cx);
if (!xpc)
return JS_FALSE;
JS_SetNativeStackQuota(cx, 128 * sizeof(size_t) * 1024);
JS_SetScriptStackQuota(cx, 25 * sizeof(size_t) * 1024 * 1024);
// we want to mark the global object ourselves since we use a different color
JS_ToggleOptions(cx, JSOPTION_UNROOTED_GLOBAL);
return JS_TRUE;
}
static void
load_module_elements(JSContext *context,
JSObject *in_object,
ImporterIterator *iter,
const char *init_path) {
JSObject *module_obj;
JSObject *jsiter;
module_obj = load_module_init(context, in_object, init_path);
if (module_obj != NULL) {
jsid idp;
jsiter = JS_NewPropertyIterator(context, module_obj);
if (jsiter == NULL) {
return;
}
if (!JS_NextProperty(context, jsiter, &idp)) {
return;
}
while (!JSID_IS_VOID(idp)) {
char *name;
if (!gjs_get_string_id(context, idp, &name)) {
continue;
}
/* Pass ownership of name */
g_ptr_array_add(iter->elements, name);
if (!JS_NextProperty(context, jsiter, &idp)) {
break;
}
}
}
}
JSBool
CheckFilename(JSContext *cx, jsid id, JSStackFrame *fp)
{
const char *filename;
if (fp &&
(filename = fp->getScript()->filename) &&
!strncmp(filename, prefix, NS_ARRAY_LENGTH(prefix) - 1)) {
return JS_TRUE;
}
if (JSID_IS_VOID(id)) {
ThrowException(NS_ERROR_XPC_SECURITY_MANAGER_VETO, cx);
} else {
jsval idval;
JSString *str;
if (JS_IdToValue(cx, id, &idval) && (str = JS_ValueToString(cx, idval))) {
JS_ReportError(cx, "Permission denied to access property '%hs' from a non-chrome context",
JS_GetStringChars(str));
}
}
return JS_FALSE;
}
void
XPCCallContext::Init(XPCContext::LangType callerLanguage,
JSBool callBeginRequest,
JSObject* obj,
JSObject* funobj,
WrapperInitOptions wrapperInitOptions,
jsid name,
uintN argc,
jsval *argv,
jsval *rval)
{
if (!mXPC)
return;
mThreadData = XPCPerThreadData::GetData(mJSContext);
if (!mThreadData)
return;
XPCJSContextStack* stack = mThreadData->GetJSContextStack();
JSContext* topJSContext;
if (!stack || NS_FAILED(stack->Peek(&topJSContext))) {
// If we don't have a stack we're probably in shutdown.
NS_ASSERTION(!stack, "Bad, Peek failed!");
mJSContext = nsnull;
return;
}
if (!mJSContext) {
// This is slightly questionable. If called without an explicit
// JSContext (generally a call to a wrappedJS) we will use the JSContext
// on the top of the JSContext stack - if there is one - *before*
// falling back on the safe JSContext.
// This is good AND bad because it makes calls from JS -> native -> JS
// have JS stack 'continuity' for purposes of stack traces etc.
// Note: this *is* what the pre-XPCCallContext xpconnect did too.
if (topJSContext)
mJSContext = topJSContext;
else if (NS_FAILED(stack->GetSafeJSContext(&mJSContext)) || !mJSContext)
return;
}
if (topJSContext != mJSContext) {
if (NS_FAILED(stack->Push(mJSContext))) {
NS_ERROR("bad!");
return;
}
mContextPopRequired = true;
}
// Get into the request as early as we can to avoid problems with scanning
// callcontexts on other threads from within the gc callbacks.
NS_ASSERTION(!callBeginRequest || mCallerLanguage == NATIVE_CALLER,
"Don't call JS_BeginRequest unless the caller is native.");
if (callBeginRequest)
JS_BeginRequest(mJSContext);
mXPCContext = XPCContext::GetXPCContext(mJSContext);
mPrevCallerLanguage = mXPCContext->SetCallingLangType(mCallerLanguage);
// hook into call context chain for our thread
mPrevCallContext = mThreadData->SetCallContext(this);
// We only need to addref xpconnect once so only do it if this is the first
// context in the chain.
if (!mPrevCallContext)
NS_ADDREF(mXPC);
mState = HAVE_CONTEXT;
if (!obj)
return;
mScopeForNewJSObjects = obj;
mState = HAVE_SCOPE;
mMethodIndex = 0xDEAD;
mState = HAVE_OBJECT;
mTearOff = nsnull;
if (wrapperInitOptions == INIT_SHOULD_LOOKUP_WRAPPER) {
mWrapper = XPCWrappedNative::GetWrappedNativeOfJSObject(mJSContext, obj,
funobj,
&mFlattenedJSObject,
&mTearOff);
if (mWrapper) {
DEBUG_CheckWrapperThreadSafety(mWrapper);
mFlattenedJSObject = mWrapper->GetFlatJSObject();
if (mTearOff)
mScriptableInfo = nsnull;
else
mScriptableInfo = mWrapper->GetScriptableInfo();
} else {
NS_ABORT_IF_FALSE(!mFlattenedJSObject || IS_SLIM_WRAPPER(mFlattenedJSObject),
"should have a slim wrapper");
}
}
if (!JSID_IS_VOID(name))
SetName(name);
if (argc != NO_ARGS)
SetArgsAndResultPtr(argc, argv, rval);
CHECK_STATE(HAVE_OBJECT);
}
/* Initialize a newly created Boxed from an object that is a "hash" of
* properties to set as fieds of the object. We don't require that every field
* of the object be set.
*/
static JSBool
boxed_init_from_props(JSContext *context,
JSObject *obj,
Boxed *priv,
jsval props_value)
{
JSObject *props;
JSObject *iter;
jsid prop_id;
GHashTable *field_map;
gboolean success;
success = FALSE;
if (!JSVAL_IS_OBJECT(props_value)) {
gjs_throw(context, "argument should be a hash with fields to set");
return JS_FALSE;
}
props = JSVAL_TO_OBJECT(props_value);
iter = JS_NewPropertyIterator(context, props);
if (iter == NULL) {
gjs_throw(context, "Failed to create property iterator for fields hash");
return JS_FALSE;
}
field_map = get_field_map(priv->info);
prop_id = JSID_VOID;
if (!JS_NextProperty(context, iter, &prop_id))
goto out;
while (!JSID_IS_VOID(prop_id)) {
GIFieldInfo *field_info;
char *name;
jsval value;
if (!gjs_get_string_id(context, prop_id, &name))
goto out;
field_info = g_hash_table_lookup(field_map, name);
if (field_info == NULL) {
gjs_throw(context, "No field %s on boxed type %s",
name, g_base_info_get_name((GIBaseInfo *)priv->info));
g_free(name);
goto out;
}
if (!gjs_object_require_property(context, props, "property list", name, &value)) {
g_free(name);
goto out;
}
g_free(name);
if (!boxed_set_field_from_value(context, priv, field_info, value))
goto out;
prop_id = JSID_VOID;
if (!JS_NextProperty(context, iter, &prop_id))
goto out;
}
success = TRUE;
out:
g_hash_table_destroy(field_map);
return success;
}
nsresult
leakmonJSObjectInfo::Init(leakmonObjectsInReportTable &aObjectsInReport)
{
mIsInitialized = PR_TRUE;
JSContext *cx = leakmonService::GetJSContext();
NS_ENSURE_TRUE(cx, NS_ERROR_UNEXPECTED);
JSAutoRequest ar(cx);
if (!JSVAL_IS_PRIMITIVE(mJSValue)) {
JSObject *obj = JSVAL_TO_OBJECT(mJSValue);
// All of the objects in obj's prototype chain, and all
// objects reachable from JS_NewPropertyIterator should
// (I think?) be in the same compartment.
JSAutoEnterCompartment ac;
if (!ac.enter(cx, obj)) {
return NS_ERROR_FAILURE;
}
JSObject *p;
for (p = obj; p; p = JS_GetPrototype(cx, p)) {
// Stack-scanning protects newly-created objects
// (etor) from GC. (And protecting |etor|
// should in turn protect |id|.)
// JS_NewPropertyIterator has the nice property that it
// avoids JS_Enumerate on native objects (where it can
// execute code) and uses the scope properties, but doesn't
// require this code to use the unstable OBJ_IS_NATIVE API.
JSObject *etor = JS_NewPropertyIterator(cx, p);
if (!etor)
return NS_ERROR_OUT_OF_MEMORY;
jsid id;
while (JS_NextProperty(cx, etor, &id) && !JSID_IS_VOID(id)) {
nsresult rv = AppendProperty(id, cx, aObjectsInReport);
NS_ENSURE_SUCCESS(rv, rv);
}
}
if (JS_ObjectIsFunction(cx, obj)) {
JSFunction *fun = JS_ValueToFunction(cx, mJSValue);
NS_ENSURE_TRUE(fun, NS_ERROR_UNEXPECTED);
JSScript *script = JS_GetFunctionScript(cx, fun);
if (script) { // null for native code
const char *fname = JS_GetScriptFilename(cx, script);
// XXX Do we know the encoding of this file name?
mFileName = NS_ConvertUTF8toUTF16(fname);
mLineStart = JS_GetScriptBaseLineNumber(cx, script);
mLineEnd = mLineStart + JS_GetScriptLineExtent(cx, script) - 1;
}
}
}
ValueToString(cx, mJSValue, mString);
return NS_OK;
}
// If you change this code, change also nsContentUtils::CanAccessNativeAnon()!
JSBool
AllowedToAct(JSContext *cx, jsid id)
{
// TODO bug 508928: Refactor this with the XOW security checking code.
nsIScriptSecurityManager *ssm = GetSecurityManager();
if (!ssm) {
return JS_TRUE;
}
JSStackFrame *fp;
nsIPrincipal *principal = ssm->GetCxSubjectPrincipalAndFrame(cx, &fp);
if (!principal) {
return ThrowException(NS_ERROR_UNEXPECTED, cx);
}
if (!fp) {
if (!JS_FrameIterator(cx, &fp)) {
// No code at all is running. So we must be arriving here as the result
// of C++ code asking us to do something. Allow access.
return JS_TRUE;
}
// Some code is running, we can't make the assumption, as above, but we
// can't use a native frame, so clear fp.
fp = nsnull;
} else if (!fp->hasScript()) {
fp = nsnull;
}
PRBool privileged;
if (NS_SUCCEEDED(ssm->IsSystemPrincipal(principal, &privileged)) &&
privileged) {
// Chrome things are allowed to touch us.
return JS_TRUE;
}
// XXX HACK EWW! Allow chrome://global/ access to these things, even
// if they've been cloned into less privileged contexts.
const char *filename;
if (fp &&
(filename = fp->getScript()->filename) &&
!strncmp(filename, prefix, NS_ARRAY_LENGTH(prefix) - 1)) {
return JS_TRUE;
}
// Before we throw, check for UniversalXPConnect.
nsresult rv = ssm->IsCapabilityEnabled("UniversalXPConnect", &privileged);
if (NS_SUCCEEDED(rv) && privileged) {
return JS_TRUE;
}
if (JSID_IS_VOID(id)) {
ThrowException(NS_ERROR_XPC_SECURITY_MANAGER_VETO, cx);
} else {
// TODO Localize me?
jsval idval;
JSString *str;
if (JS_IdToValue(cx, id, &idval) && (str = JS_ValueToString(cx, idval))) {
JS_ReportError(cx, "Permission denied to access property '%hs' from a non-chrome context",
JS_GetStringChars(str));
}
}
return JS_FALSE;
}
static JSBool
rpmxar_enumerate(JSContext *cx, JSObject *obj, JSIterateOp op,
jsval *statep, jsid *idp)
{
void * ptr = JS_GetInstancePrivate(cx, obj, &rpmxarClass, NULL);
rpmxar xar = ptr;
int ix = 0;
_ENUMERATE_DEBUG_ENTRY(_debug < 0);
switch (op) {
case JSENUMERATE_INIT:
case JSENUMERATE_INIT_ALL:
if (idp)
*idp = JSVAL_ZERO;
*statep = INT_TO_JSVAL(ix);
if (_debug)
fprintf(stderr, "\tINIT xar %p\n", xar);
break;
case JSENUMERATE_NEXT:
ix = JSVAL_TO_INT(*statep);
if (!rpmxarNext(xar)) {
const char * path = rpmxarPath(xar);
struct stat * st = xmalloc(sizeof(*st));
JSObject * arr = JS_NewArrayObject(cx, 0, NULL);
JSBool ok = JS_AddRoot(cx, &arr);
JSObject * o;
jsval v;
v = STRING_TO_JSVAL(JS_NewStringCopyZ(cx, path));
ok = JS_SetElement(cx, arr, 0, &v);
if (!rpmxarStat(xar, st)
&& (o = JS_NewObject(cx, &rpmstClass, NULL, NULL)) != NULL
&& JS_SetPrivate(cx, o, (void *)st))
v = OBJECT_TO_JSVAL(o);
else {
st = _free(st);
v = JSVAL_NULL;
}
ok = JS_SetElement(cx, arr, 1, &v);
v = OBJECT_TO_JSVAL(arr);
ok = JS_DefineElement(cx, obj, ix, v, NULL, NULL, JSPROP_ENUMERATE);
(void) JS_RemoveRoot(cx, &arr);
if (_debug)
fprintf(stderr, "\tNEXT xar %p[%u] \"%s\"\n", xar, ix, path);
path = _free(path);
JS_ValueToId(cx, *statep, idp);
*statep = INT_TO_JSVAL(ix+1);
} else
*idp = JSVAL_VOID;
if (!JSID_IS_VOID(*idp))
break;
/*@fallthrough@*/
case JSENUMERATE_DESTROY:
ix = JSVAL_TO_INT(*statep);
(void) JS_DefineProperty(cx, obj, "length", INT_TO_JSVAL(ix),
NULL, NULL, JSPROP_ENUMERATE);
if (_debug)
fprintf(stderr, "\tFINI xar %p[%u]\n", xar, ix);
*statep = JSVAL_NULL;
break;
}
return JS_TRUE;
}
