Files
tubestation/xpcom/components/ManifestParser.cpp
Mike Hommey 2ec8038bc5 Bug 1365419 - Allow to apply manifest entries for all non-(Darwin,Windows,Android) OSes. r=bsmedberg
Manifest entries can contain flags, one of which allows to match on the
os running Gecko. The match is performed against the value returned by
nsIXULRuntime.getOS, which itself comes from the build-system's
OS_TARGET.

In practice, this means that things like os=WINNT, os=Darwin,
os=Android, os=Linux are valid filters, but the latter is too specific,
and most of the time, one would want something that is "any OS but
WINNT, Darwin, Android", which can't be expressed with manifest entry
flags (there is no "and" for them, only "or").

For convenience, we add the keyword "LikeUnix", which has that meaning.
2017-05-26 08:56:18 +09:00

782 lines
21 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "mozilla/ArrayUtils.h"
#include "mozilla/Printf.h"
#include "mozilla/UniquePtr.h"
#include "ManifestParser.h"
#include <string.h>
#include "prio.h"
#if defined(XP_WIN)
#include <windows.h>
#elif defined(MOZ_WIDGET_COCOA)
#include <CoreServices/CoreServices.h>
#include "nsCocoaFeatures.h"
#elif defined(MOZ_WIDGET_GTK)
#include <gtk/gtk.h>
#endif
#ifdef MOZ_WIDGET_ANDROID
#include "AndroidBridge.h"
#endif
#include "mozilla/Services.h"
#include "nsCRT.h"
#include "nsConsoleMessage.h"
#include "nsTextFormatter.h"
#include "nsVersionComparator.h"
#include "nsXPCOMCIDInternal.h"
#include "nsIConsoleService.h"
#include "nsIScriptError.h"
#include "nsIXULAppInfo.h"
#include "nsIXULRuntime.h"
using namespace mozilla;
struct ManifestDirective
{
const char* directive;
int argc;
// Binary components are only allowed for APP locations.
bool apponly;
// Some directives should only be delivered for APP or EXTENSION locations.
bool componentonly;
bool ischrome;
bool allowbootstrap;
// The contentaccessible flags only apply to content directives.
bool contentflags;
// Function to handle this directive. This isn't a union because C++ still
// hasn't learned how to initialize unions in a sane way.
void (nsComponentManagerImpl::*mgrfunc)(
nsComponentManagerImpl::ManifestProcessingContext& aCx,
int aLineNo, char* const* aArgv);
void (nsChromeRegistry::*regfunc)(
nsChromeRegistry::ManifestProcessingContext& aCx,
int aLineNo, char* const* aArgv, int aFlags);
void* xptonlyfunc;
bool isContract;
};
static const ManifestDirective kParsingTable[] = {
{
"manifest", 1, false, false, true, true, false,
&nsComponentManagerImpl::ManifestManifest, nullptr, nullptr
},
{
"binary-component", 1, true, true, false, false, false,
&nsComponentManagerImpl::ManifestBinaryComponent, nullptr, nullptr
},
{
"interfaces", 1, false, true, false, false, false,
&nsComponentManagerImpl::ManifestXPT, nullptr, nullptr
},
{
"component", 2, false, true, false, false, false,
&nsComponentManagerImpl::ManifestComponent, nullptr, nullptr
},
{
"contract", 2, false, true, false, false, false,
&nsComponentManagerImpl::ManifestContract, nullptr, nullptr, true
},
{
"category", 3, false, true, false, false, false,
&nsComponentManagerImpl::ManifestCategory, nullptr, nullptr
},
{
"content", 2, false, true, true, true, true,
nullptr, &nsChromeRegistry::ManifestContent, nullptr
},
{
"locale", 3, false, true, true, true, false,
nullptr, &nsChromeRegistry::ManifestLocale, nullptr
},
{
"skin", 3, false, false, true, true, false,
nullptr, &nsChromeRegistry::ManifestSkin, nullptr
},
{
"overlay", 2, false, true, true, false, false,
nullptr, &nsChromeRegistry::ManifestOverlay, nullptr
},
{
"style", 2, false, false, true, false, false,
nullptr, &nsChromeRegistry::ManifestStyle, nullptr
},
{
// NB: note that while skin manifests can use this, they are only allowed
// to use it for chrome://../skin/ URLs
"override", 2, false, false, true, true, false,
nullptr, &nsChromeRegistry::ManifestOverride, nullptr
},
{
"resource", 2, false, true, true, true, false,
nullptr, &nsChromeRegistry::ManifestResource, nullptr
}
};
static const char kWhitespace[] = "\t ";
static bool
IsNewline(char aChar)
{
return aChar == '\n' || aChar == '\r';
}
/**
* If we are pre-loading XPTs, this method may do nothing because the
* console service is not initialized.
*/
void
LogMessage(const char* aMsg, ...)
{
if (!nsComponentManagerImpl::gComponentManager) {
return;
}
nsCOMPtr<nsIConsoleService> console =
do_GetService(NS_CONSOLESERVICE_CONTRACTID);
if (!console) {
return;
}
va_list args;
va_start(args, aMsg);
SmprintfPointer formatted(mozilla::Vsmprintf(aMsg, args));
va_end(args);
nsCOMPtr<nsIConsoleMessage> error =
new nsConsoleMessage(NS_ConvertUTF8toUTF16(formatted.get()).get());
console->LogMessage(error);
}
/**
* If we are pre-loading XPTs, this method may do nothing because the
* console service is not initialized.
*/
void
LogMessageWithContext(FileLocation& aFile,
uint32_t aLineNumber, const char* aMsg, ...)
{
va_list args;
va_start(args, aMsg);
SmprintfPointer formatted(mozilla::Vsmprintf(aMsg, args));
va_end(args);
if (!formatted) {
return;
}
if (!nsComponentManagerImpl::gComponentManager) {
return;
}
nsCString file;
aFile.GetURIString(file);
nsCOMPtr<nsIScriptError> error =
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID);
if (!error) {
// This can happen early in component registration. Fall back to a
// generic console message.
LogMessage("Warning: in '%s', line %i: %s", file.get(),
aLineNumber, formatted.get());
return;
}
nsCOMPtr<nsIConsoleService> console =
do_GetService(NS_CONSOLESERVICE_CONTRACTID);
if (!console) {
return;
}
nsresult rv = error->Init(NS_ConvertUTF8toUTF16(formatted.get()),
NS_ConvertUTF8toUTF16(file), EmptyString(),
aLineNumber, 0, nsIScriptError::warningFlag,
"chrome registration");
if (NS_FAILED(rv)) {
return;
}
console->LogMessage(error);
}
/**
* Check for a modifier flag of the following forms:
* "flag" (same as "true")
* "flag=yes|true|1"
* "flag="no|false|0"
* @param aFlag The flag to compare.
* @param aData The tokenized data to check; this is lowercased
* before being passed in.
* @param aResult If the flag is found, the value is assigned here.
* @return Whether the flag was handled.
*/
static bool
CheckFlag(const nsSubstring& aFlag, const nsSubstring& aData, bool& aResult)
{
if (!StringBeginsWith(aData, aFlag)) {
return false;
}
if (aFlag.Length() == aData.Length()) {
// the data is simply "flag", which is the same as "flag=yes"
aResult = true;
return true;
}
if (aData.CharAt(aFlag.Length()) != '=') {
// the data is "flag2=", which is not anything we care about
return false;
}
if (aData.Length() == aFlag.Length() + 1) {
aResult = false;
return true;
}
switch (aData.CharAt(aFlag.Length() + 1)) {
case '1':
case 't': //true
case 'y': //yes
aResult = true;
return true;
case '0':
case 'f': //false
case 'n': //no
aResult = false;
return true;
}
return false;
}
enum TriState
{
eUnspecified,
eBad,
eOK
};
/**
* Check for a modifier flag of the following form:
* "flag=string"
* "flag!=string"
* @param aFlag The flag to compare.
* @param aData The tokenized data to check; this is lowercased
* before being passed in.
* @param aValue The value that is expected.
* @param aResult If this is "ok" when passed in, this is left alone.
* Otherwise if the flag is found it is set to eBad or eOK.
* @return Whether the flag was handled.
*/
static bool
CheckStringFlag(const nsSubstring& aFlag, const nsSubstring& aData,
const nsSubstring& aValue, TriState& aResult)
{
if (aData.Length() < aFlag.Length() + 1) {
return false;
}
if (!StringBeginsWith(aData, aFlag)) {
return false;
}
bool comparison = true;
if (aData[aFlag.Length()] != '=') {
if (aData[aFlag.Length()] == '!' &&
aData.Length() >= aFlag.Length() + 2 &&
aData[aFlag.Length() + 1] == '=') {
comparison = false;
} else {
return false;
}
}
if (aResult != eOK) {
nsDependentSubstring testdata =
Substring(aData, aFlag.Length() + (comparison ? 1 : 2));
if (testdata.Equals(aValue)) {
aResult = comparison ? eOK : eBad;
} else {
aResult = comparison ? eBad : eOK;
}
}
return true;
}
static bool
CheckOsFlag(const nsSubstring& aFlag, const nsSubstring& aData,
const nsSubstring& aValue, TriState& aResult)
{
bool result = CheckStringFlag(aFlag, aData, aValue, aResult);
#if defined(XP_UNIX) && !defined(XP_DARWIN) && !defined(ANDROID)
if (result && aResult == eBad) {
result = CheckStringFlag(aFlag, aData, NS_LITERAL_STRING("likeunix"), aResult);
}
#endif
return result;
}
/**
* Check for a modifier flag of the following form:
* "flag=version"
* "flag<=version"
* "flag<version"
* "flag>=version"
* "flag>version"
* @param aFlag The flag to compare.
* @param aData The tokenized data to check; this is lowercased
* before being passed in.
* @param aValue The value that is expected. If this is empty then no
* comparison will match.
* @param aResult If this is eOK when passed in, this is left alone.
* Otherwise if the flag is found it is set to eBad or eOK.
* @return Whether the flag was handled.
*/
#define COMPARE_EQ 1 << 0
#define COMPARE_LT 1 << 1
#define COMPARE_GT 1 << 2
static bool
CheckVersionFlag(const nsString& aFlag, const nsString& aData,
const nsString& aValue, TriState& aResult)
{
if (aData.Length() < aFlag.Length() + 2) {
return false;
}
if (!StringBeginsWith(aData, aFlag)) {
return false;
}
if (aValue.Length() == 0) {
if (aResult != eOK) {
aResult = eBad;
}
return true;
}
uint32_t comparison;
nsAutoString testdata;
switch (aData[aFlag.Length()]) {
case '=':
comparison = COMPARE_EQ;
testdata = Substring(aData, aFlag.Length() + 1);
break;
case '<':
if (aData[aFlag.Length() + 1] == '=') {
comparison = COMPARE_EQ | COMPARE_LT;
testdata = Substring(aData, aFlag.Length() + 2);
} else {
comparison = COMPARE_LT;
testdata = Substring(aData, aFlag.Length() + 1);
}
break;
case '>':
if (aData[aFlag.Length() + 1] == '=') {
comparison = COMPARE_EQ | COMPARE_GT;
testdata = Substring(aData, aFlag.Length() + 2);
} else {
comparison = COMPARE_GT;
testdata = Substring(aData, aFlag.Length() + 1);
}
break;
default:
return false;
}
if (testdata.Length() == 0) {
return false;
}
if (aResult != eOK) {
int32_t c = mozilla::CompareVersions(NS_ConvertUTF16toUTF8(aValue).get(),
NS_ConvertUTF16toUTF8(testdata).get());
if ((c == 0 && comparison & COMPARE_EQ) ||
(c < 0 && comparison & COMPARE_LT) ||
(c > 0 && comparison & COMPARE_GT)) {
aResult = eOK;
} else {
aResult = eBad;
}
}
return true;
}
// In-place conversion of ascii characters to lower case
static void
ToLowerCase(char* aToken)
{
for (; *aToken; ++aToken) {
*aToken = NS_ToLower(*aToken);
}
}
namespace {
struct CachedDirective
{
int lineno;
char* argv[4];
};
} // namespace
/**
* For XPT-Only mode, the parser handles only directives of "manifest"
* and "interfaces", and always call the function given by |xptonlyfunc|
* variable of struct |ManifestDirective|.
*
* This function is safe to be called before the component manager is
* ready if aXPTOnly is true for it don't invoke any component during
* parsing.
*/
void
ParseManifest(NSLocationType aType, FileLocation& aFile, char* aBuf,
bool aChromeOnly, bool aXPTOnly)
{
nsComponentManagerImpl::ManifestProcessingContext mgrcx(aType, aFile,
aChromeOnly);
nsChromeRegistry::ManifestProcessingContext chromecx(aType, aFile);
nsresult rv;
NS_NAMED_LITERAL_STRING(kContentAccessible, "contentaccessible");
NS_NAMED_LITERAL_STRING(kRemoteEnabled, "remoteenabled");
NS_NAMED_LITERAL_STRING(kRemoteRequired, "remoterequired");
NS_NAMED_LITERAL_STRING(kApplication, "application");
NS_NAMED_LITERAL_STRING(kAppVersion, "appversion");
NS_NAMED_LITERAL_STRING(kGeckoVersion, "platformversion");
NS_NAMED_LITERAL_STRING(kOs, "os");
NS_NAMED_LITERAL_STRING(kOsVersion, "osversion");
NS_NAMED_LITERAL_STRING(kABI, "abi");
NS_NAMED_LITERAL_STRING(kProcess, "process");
#if defined(MOZ_WIDGET_ANDROID)
NS_NAMED_LITERAL_STRING(kTablet, "tablet");
#endif
NS_NAMED_LITERAL_STRING(kMain, "main");
NS_NAMED_LITERAL_STRING(kContent, "content");
// Obsolete
NS_NAMED_LITERAL_STRING(kXPCNativeWrappers, "xpcnativewrappers");
nsAutoString appID;
nsAutoString appVersion;
nsAutoString geckoVersion;
nsAutoString osTarget;
nsAutoString abi;
nsAutoString process;
nsCOMPtr<nsIXULAppInfo> xapp;
if (!aXPTOnly) {
// Avoid to create any component for XPT only mode.
// No xapp means no ID, version, ..., modifiers checking.
xapp = do_GetService(XULAPPINFO_SERVICE_CONTRACTID);
}
if (xapp) {
nsAutoCString s;
rv = xapp->GetID(s);
if (NS_SUCCEEDED(rv)) {
CopyUTF8toUTF16(s, appID);
}
rv = xapp->GetVersion(s);
if (NS_SUCCEEDED(rv)) {
CopyUTF8toUTF16(s, appVersion);
}
rv = xapp->GetPlatformVersion(s);
if (NS_SUCCEEDED(rv)) {
CopyUTF8toUTF16(s, geckoVersion);
}
nsCOMPtr<nsIXULRuntime> xruntime(do_QueryInterface(xapp));
if (xruntime) {
rv = xruntime->GetOS(s);
if (NS_SUCCEEDED(rv)) {
ToLowerCase(s);
CopyUTF8toUTF16(s, osTarget);
}
rv = xruntime->GetXPCOMABI(s);
if (NS_SUCCEEDED(rv) && osTarget.Length()) {
ToLowerCase(s);
CopyUTF8toUTF16(s, abi);
abi.Insert(char16_t('_'), 0);
abi.Insert(osTarget, 0);
}
}
}
nsAutoString osVersion;
#if defined(XP_WIN)
#pragma warning(push)
#pragma warning(disable:4996) // VC12+ deprecates GetVersionEx
OSVERSIONINFO info = { sizeof(OSVERSIONINFO) };
if (GetVersionEx(&info)) {
nsTextFormatter::ssprintf(osVersion, u"%ld.%ld",
info.dwMajorVersion,
info.dwMinorVersion);
}
#pragma warning(pop)
#elif defined(MOZ_WIDGET_COCOA)
SInt32 majorVersion = nsCocoaFeatures::OSXVersionMajor();
SInt32 minorVersion = nsCocoaFeatures::OSXVersionMinor();
nsTextFormatter::ssprintf(osVersion, u"%ld.%ld",
majorVersion,
minorVersion);
#elif defined(MOZ_WIDGET_GTK)
nsTextFormatter::ssprintf(osVersion, u"%ld.%ld",
gtk_major_version,
gtk_minor_version);
#elif defined(MOZ_WIDGET_ANDROID)
bool isTablet = false;
if (mozilla::AndroidBridge::Bridge()) {
mozilla::AndroidBridge::Bridge()->GetStaticStringField("android/os/Build$VERSION",
"RELEASE",
osVersion);
isTablet = java::GeckoAppShell::IsTablet();
}
#endif
if (XRE_IsContentProcess()) {
process = kContent;
} else {
process = kMain;
}
// Because contracts must be registered after CIDs, we save and process them
// at the end.
nsTArray<CachedDirective> contracts;
char* token;
char* newline = aBuf;
uint32_t line = 0;
// outer loop tokenizes by newline
while (*newline) {
while (*newline && IsNewline(*newline)) {
++newline;
++line;
}
if (!*newline) {
break;
}
token = newline;
while (*newline && !IsNewline(*newline)) {
++newline;
}
if (*newline) {
*newline = '\0';
++newline;
}
++line;
if (*token == '#') { // ignore lines that begin with # as comments
continue;
}
char* whitespace = token;
token = nsCRT::strtok(whitespace, kWhitespace, &whitespace);
if (!token) {
continue;
}
const ManifestDirective* directive = nullptr;
for (const ManifestDirective* d = kParsingTable;
d < ArrayEnd(kParsingTable);
++d) {
if (!strcmp(d->directive, token) &&
(!aXPTOnly || d->xptonlyfunc)) {
directive = d;
break;
}
}
if (!directive) {
LogMessageWithContext(aFile, line,
"Ignoring unrecognized chrome manifest directive '%s'.",
token);
continue;
}
if (!directive->allowbootstrap && NS_BOOTSTRAPPED_LOCATION == aType) {
LogMessageWithContext(aFile, line,
"Bootstrapped manifest not allowed to use '%s' directive.",
token);
continue;
}
#ifndef MOZ_BINARY_EXTENSIONS
if (directive->apponly && NS_APP_LOCATION != aType) {
LogMessageWithContext(aFile, line,
"Only application manifests may use the '%s' directive.", token);
continue;
}
#endif
if (directive->componentonly && NS_SKIN_LOCATION == aType) {
LogMessageWithContext(aFile, line,
"Skin manifest not allowed to use '%s' directive.",
token);
continue;
}
NS_ASSERTION(directive->argc < 4, "Need to reset argv array length");
char* argv[4];
for (int i = 0; i < directive->argc; ++i) {
argv[i] = nsCRT::strtok(whitespace, kWhitespace, &whitespace);
}
if (!argv[directive->argc - 1]) {
LogMessageWithContext(aFile, line,
"Not enough arguments for chrome manifest directive '%s', expected %i.",
token, directive->argc);
continue;
}
bool ok = true;
TriState stAppVersion = eUnspecified;
TriState stGeckoVersion = eUnspecified;
TriState stApp = eUnspecified;
TriState stOsVersion = eUnspecified;
TriState stOs = eUnspecified;
TriState stABI = eUnspecified;
TriState stProcess = eUnspecified;
#if defined(MOZ_WIDGET_ANDROID)
TriState stTablet = eUnspecified;
#endif
int flags = 0;
while ((token = nsCRT::strtok(whitespace, kWhitespace, &whitespace)) &&
ok) {
ToLowerCase(token);
NS_ConvertASCIItoUTF16 wtoken(token);
if (CheckStringFlag(kApplication, wtoken, appID, stApp) ||
CheckOsFlag(kOs, wtoken, osTarget, stOs) ||
CheckStringFlag(kABI, wtoken, abi, stABI) ||
CheckStringFlag(kProcess, wtoken, process, stProcess) ||
CheckVersionFlag(kOsVersion, wtoken, osVersion, stOsVersion) ||
CheckVersionFlag(kAppVersion, wtoken, appVersion, stAppVersion) ||
CheckVersionFlag(kGeckoVersion, wtoken, geckoVersion, stGeckoVersion)) {
continue;
}
#if defined(MOZ_WIDGET_ANDROID)
bool tablet = false;
if (CheckFlag(kTablet, wtoken, tablet)) {
stTablet = (tablet == isTablet) ? eOK : eBad;
continue;
}
#endif
if (directive->contentflags) {
bool flag;
if (CheckFlag(kContentAccessible, wtoken, flag)) {
if (flag)
flags |= nsChromeRegistry::CONTENT_ACCESSIBLE;
continue;
}
if (CheckFlag(kRemoteEnabled, wtoken, flag)) {
if (flag)
flags |= nsChromeRegistry::REMOTE_ALLOWED;
continue;
}
if (CheckFlag(kRemoteRequired, wtoken, flag)) {
if (flag)
flags |= nsChromeRegistry::REMOTE_REQUIRED;
continue;
}
}
bool xpcNativeWrappers = true; // Dummy for CheckFlag.
if (CheckFlag(kXPCNativeWrappers, wtoken, xpcNativeWrappers)) {
LogMessageWithContext(aFile, line,
"Ignoring obsolete chrome registration modifier '%s'.",
token);
continue;
}
LogMessageWithContext(aFile, line,
"Unrecognized chrome manifest modifier '%s'.",
token);
ok = false;
}
if (!ok ||
stApp == eBad ||
stAppVersion == eBad ||
stGeckoVersion == eBad ||
stOs == eBad ||
stOsVersion == eBad ||
#ifdef MOZ_WIDGET_ANDROID
stTablet == eBad ||
#endif
stABI == eBad ||
stProcess == eBad) {
continue;
}
if (directive->regfunc) {
if (GeckoProcessType_Default != XRE_GetProcessType()) {
continue;
}
if (!nsChromeRegistry::gChromeRegistry) {
nsCOMPtr<nsIChromeRegistry> cr =
mozilla::services::GetChromeRegistryService();
if (!nsChromeRegistry::gChromeRegistry) {
LogMessageWithContext(aFile, line,
"Chrome registry isn't available yet.");
continue;
}
}
(nsChromeRegistry::gChromeRegistry->*(directive->regfunc))(
chromecx, line, argv, flags);
} else if (directive->ischrome || !aChromeOnly) {
if (directive->isContract) {
CachedDirective* cd = contracts.AppendElement();
cd->lineno = line;
cd->argv[0] = argv[0];
cd->argv[1] = argv[1];
} else {
(nsComponentManagerImpl::gComponentManager->*(directive->mgrfunc))(
mgrcx, line, argv);
}
}
}
for (uint32_t i = 0; i < contracts.Length(); ++i) {
CachedDirective& d = contracts[i];
nsComponentManagerImpl::gComponentManager->ManifestContract(mgrcx,
d.lineno,
d.argv);
}
}