gecko-dev/mozglue/android/APKOpen.cpp

410 lines
12 KiB
C++

/* 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 custom library loading code is only meant to be called
* during initialization. As a result, it takes no special
* precautions to be threadsafe. Any of the library loading functions
* like mozload should not be available to other code.
*/
#include <jni.h>
#include <android/log.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/limits.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#include <zlib.h>
#include "dlfcn.h"
#include "APKOpen.h"
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/prctl.h>
#include "Zip.h"
#include "sqlite3.h"
#include "SQLiteBridge.h"
#include "NSSBridge.h"
#include "ElfLoader.h"
#include "application.ini.h"
/* Android headers don't define RUSAGE_THREAD */
#ifndef RUSAGE_THREAD
#define RUSAGE_THREAD 1
#endif
#ifndef RELEASE_BUILD
/* Official builds have the debuggable flag set to false, which disables
* the backtrace dumper from bionic. However, as it is useful for native
* crashes happening before the crash reporter is registered, re-enable
* it on non release builds (i.e. nightly and aurora).
* Using a constructor so that it is re-enabled as soon as libmozglue.so
* is loaded.
*/
__attribute__((constructor))
void make_dumpable() {
prctl(PR_SET_DUMPABLE, 1);
}
#endif
extern "C" {
/*
* To work around http://code.google.com/p/android/issues/detail?id=23203
* we don't link with the crt objects. In some configurations, this means
* a lack of the __dso_handle symbol because it is defined there, and
* depending on the android platform and ndk versions used, it may or may
* not be defined in libc.so. In the latter case, we fail to link. Defining
* it here as weak makes us provide the symbol when it's not provided by
* the crt objects, making the change transparent for future NDKs that
* would fix the original problem. On older NDKs, it is not a problem
* either because the way __dso_handle was used was already broken (and
* the custom linker works around it).
*/
NS_EXPORT __attribute__((weak)) void *__dso_handle;
}
typedef int mozglueresult;
enum StartupEvent {
#define mozilla_StartupTimeline_Event(ev, z) ev,
#include "StartupTimeline.h"
#undef mozilla_StartupTimeline_Event
MAX_STARTUP_EVENT_ID
};
using namespace mozilla;
/**
* Local TimeStamp::Now()-compatible implementation used to record timestamps
* which will be passed to XRE_StartupTimelineRecord().
*/
static uint64_t TimeStamp_Now()
{
struct timespec ts;
int rv = clock_gettime(CLOCK_MONOTONIC, &ts);
if (rv != 0) {
return 0;
}
uint64_t baseNs = (uint64_t)ts.tv_sec * 1000000000;
return baseNs + (uint64_t)ts.tv_nsec;
}
static struct mapping_info * lib_mapping = nullptr;
NS_EXPORT const struct mapping_info *
getLibraryMapping()
{
return lib_mapping;
}
void
JNI_Throw(JNIEnv* jenv, const char* classname, const char* msg)
{
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Throw\n");
jclass cls = jenv->FindClass(classname);
if (cls == nullptr) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't find exception class (or exception pending) %s\n", classname);
exit(FAILURE);
}
int rc = jenv->ThrowNew(cls, msg);
if (rc < 0) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Error throwing exception %s\n", msg);
exit(FAILURE);
}
jenv->DeleteLocalRef(cls);
}
#define JNI_STUBS
#include "jni-stubs.inc"
#undef JNI_STUBS
static void * xul_handle = nullptr;
#ifndef MOZ_FOLD_LIBS
static void * sqlite_handle = nullptr;
static void * nspr_handle = nullptr;
static void * plc_handle = nullptr;
#else
#define sqlite_handle nss_handle
#define nspr_handle nss_handle
#define plc_handle nss_handle
#endif
static void * nss_handle = nullptr;
template <typename T> inline void
xul_dlsym(const char *symbolName, T *value)
{
*value = (T) (uintptr_t) __wrap_dlsym(xul_handle, symbolName);
}
static int mapping_count = 0;
#define MAX_MAPPING_INFO 32
extern "C" void
report_mapping(char *name, void *base, uint32_t len, uint32_t offset)
{
if (mapping_count >= MAX_MAPPING_INFO)
return;
struct mapping_info *info = &lib_mapping[mapping_count++];
info->name = strdup(name);
info->base = (uintptr_t)base;
info->len = len;
info->offset = offset;
}
static mozglueresult
loadGeckoLibs(const char *apkName)
{
chdir(getenv("GRE_HOME"));
uint64_t t0 = TimeStamp_Now();
struct rusage usage1_thread, usage1;
getrusage(RUSAGE_THREAD, &usage1_thread);
getrusage(RUSAGE_SELF, &usage1);
RefPtr<Zip> zip = ZipCollection::GetZip(apkName);
char *file = new char[strlen(apkName) + sizeof("!/assets/libxul.so")];
sprintf(file, "%s!/assets/libxul.so", apkName);
xul_handle = __wrap_dlopen(file, RTLD_GLOBAL | RTLD_LAZY);
delete[] file;
if (!xul_handle) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't get a handle to libxul!");
return FAILURE;
}
#define JNI_BINDINGS
#include "jni-stubs.inc"
#undef JNI_BINDINGS
void (*XRE_StartupTimelineRecord)(int, uint64_t);
xul_dlsym("XRE_StartupTimelineRecord", &XRE_StartupTimelineRecord);
uint64_t t1 = TimeStamp_Now();
struct rusage usage2_thread, usage2;
getrusage(RUSAGE_THREAD, &usage2_thread);
getrusage(RUSAGE_SELF, &usage2);
#define RUSAGE_TIMEDIFF(u1, u2, field) \
((u2.ru_ ## field.tv_sec - u1.ru_ ## field.tv_sec) * 1000 + \
(u2.ru_ ## field.tv_usec - u1.ru_ ## field.tv_usec) / 1000)
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Loaded libs in %lldms total, %ldms(%ldms) user, %ldms(%ldms) system, %ld(%ld) faults",
(t1 - t0) / 1000000,
RUSAGE_TIMEDIFF(usage1_thread, usage2_thread, utime),
RUSAGE_TIMEDIFF(usage1, usage2, utime),
RUSAGE_TIMEDIFF(usage1_thread, usage2_thread, stime),
RUSAGE_TIMEDIFF(usage1, usage2, stime),
usage2_thread.ru_majflt - usage1_thread.ru_majflt,
usage2.ru_majflt - usage1.ru_majflt);
XRE_StartupTimelineRecord(LINKER_INITIALIZED, t0);
XRE_StartupTimelineRecord(LIBRARIES_LOADED, t1);
return SUCCESS;
}
static mozglueresult loadNSSLibs(const char *apkName);
static mozglueresult
loadSQLiteLibs(const char *apkName)
{
if (sqlite_handle)
return SUCCESS;
#ifdef MOZ_FOLD_LIBS
if (loadNSSLibs(apkName) != SUCCESS)
return FAILURE;
#else
chdir(getenv("GRE_HOME"));
RefPtr<Zip> zip = ZipCollection::GetZip(apkName);
if (!lib_mapping) {
lib_mapping = (struct mapping_info *)calloc(MAX_MAPPING_INFO, sizeof(*lib_mapping));
}
char *file = new char[strlen(apkName) + sizeof("!/assets/libmozsqlite3.so")];
sprintf(file, "%s!/assets/libmozsqlite3.so", apkName);
sqlite_handle = __wrap_dlopen(file, RTLD_GLOBAL | RTLD_LAZY);
delete [] file;
if (!sqlite_handle) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't get a handle to libmozsqlite3!");
return FAILURE;
}
#endif
setup_sqlite_functions(sqlite_handle);
return SUCCESS;
}
static mozglueresult
loadNSSLibs(const char *apkName)
{
if (nss_handle && nspr_handle && plc_handle)
return SUCCESS;
chdir(getenv("GRE_HOME"));
RefPtr<Zip> zip = ZipCollection::GetZip(apkName);
if (!lib_mapping) {
lib_mapping = (struct mapping_info *)calloc(MAX_MAPPING_INFO, sizeof(*lib_mapping));
}
char *file = new char[strlen(apkName) + sizeof("!/assets/libnss3.so")];
sprintf(file, "%s!/assets/libnss3.so", apkName);
nss_handle = __wrap_dlopen(file, RTLD_GLOBAL | RTLD_LAZY);
delete [] file;
#ifndef MOZ_FOLD_LIBS
file = new char[strlen(apkName) + sizeof("!/assets/libnspr4.so")];
sprintf(file, "%s!/assets/libnspr4.so", apkName);
nspr_handle = __wrap_dlopen(file, RTLD_GLOBAL | RTLD_LAZY);
delete [] file;
file = new char[strlen(apkName) + sizeof("!/assets/libplc4.so")];
sprintf(file, "%s!/assets/libplc4.so", apkName);
plc_handle = __wrap_dlopen(file, RTLD_GLOBAL | RTLD_LAZY);
delete [] file;
#endif
if (!nss_handle) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't get a handle to libnss3!");
return FAILURE;
}
#ifndef MOZ_FOLD_LIBS
if (!nspr_handle) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't get a handle to libnspr4!");
return FAILURE;
}
if (!plc_handle) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't get a handle to libplc4!");
return FAILURE;
}
#endif
return setup_nss_functions(nss_handle, nspr_handle, plc_handle);
}
extern "C" NS_EXPORT void JNICALL
Java_org_mozilla_gecko_mozglue_GeckoLoader_loadGeckoLibsNative(JNIEnv *jenv, jclass jGeckoAppShellClass, jstring jApkName)
{
const char* str;
// XXX: java doesn't give us true UTF8, we should figure out something
// better to do here
str = jenv->GetStringUTFChars(jApkName, nullptr);
if (str == nullptr)
return;
int res = loadGeckoLibs(str);
if (res != SUCCESS) {
JNI_Throw(jenv, "java/lang/Exception", "Error loading gecko libraries");
}
jenv->ReleaseStringUTFChars(jApkName, str);
}
extern "C" NS_EXPORT void JNICALL
Java_org_mozilla_gecko_mozglue_GeckoLoader_loadSQLiteLibsNative(JNIEnv *jenv, jclass jGeckoAppShellClass, jstring jApkName) {
const char* str;
// XXX: java doesn't give us true UTF8, we should figure out something
// better to do here
str = jenv->GetStringUTFChars(jApkName, nullptr);
if (str == nullptr)
return;
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Load sqlite start\n");
mozglueresult rv = loadSQLiteLibs(str);
if (rv != SUCCESS) {
JNI_Throw(jenv, "java/lang/Exception", "Error loading sqlite libraries");
}
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Load sqlite done\n");
jenv->ReleaseStringUTFChars(jApkName, str);
}
extern "C" NS_EXPORT void JNICALL
Java_org_mozilla_gecko_mozglue_GeckoLoader_loadNSSLibsNative(JNIEnv *jenv, jclass jGeckoAppShellClass, jstring jApkName) {
const char* str;
// XXX: java doesn't give us true UTF8, we should figure out something
// better to do here
str = jenv->GetStringUTFChars(jApkName, nullptr);
if (str == nullptr)
return;
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Load nss start\n");
mozglueresult rv = loadNSSLibs(str);
if (rv != SUCCESS) {
JNI_Throw(jenv, "java/lang/Exception", "Error loading nss libraries");
}
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Load nss done\n");
jenv->ReleaseStringUTFChars(jApkName, str);
}
typedef void (*GeckoStart_t)(void *, const nsXREAppData *);
extern "C" NS_EXPORT void JNICALL
Java_org_mozilla_gecko_mozglue_GeckoLoader_nativeRun(JNIEnv *jenv, jclass jc, jstring jargs)
{
GeckoStart_t GeckoStart;
xul_dlsym("GeckoStart", &GeckoStart);
if (GeckoStart == nullptr)
return;
// XXX: java doesn't give us true UTF8, we should figure out something
// better to do here
int len = jenv->GetStringUTFLength(jargs);
// GeckoStart needs to write in the args buffer, so we need a copy.
char *args = (char *) malloc(len + 1);
jenv->GetStringUTFRegion(jargs, 0, len, args);
args[len] = '\0';
GeckoStart(args, &sAppData);
free(args);
}
typedef int GeckoProcessType;
extern "C" NS_EXPORT mozglueresult
ChildProcessInit(int argc, char* argv[])
{
int i;
for (i = 0; i < (argc - 1); i++) {
if (strcmp(argv[i], "-greomni"))
continue;
i = i + 1;
break;
}
if (loadNSSLibs(argv[i]) != SUCCESS) {
return FAILURE;
}
if (loadSQLiteLibs(argv[i]) != SUCCESS) {
return FAILURE;
}
if (loadGeckoLibs(argv[i]) != SUCCESS) {
return FAILURE;
}
void (*fXRE_SetProcessType)(char*);
xul_dlsym("XRE_SetProcessType", &fXRE_SetProcessType);
mozglueresult (*fXRE_InitChildProcess)(int, char**);
xul_dlsym("XRE_InitChildProcess", &fXRE_InitChildProcess);
fXRE_SetProcessType(argv[--argc]);
return fXRE_InitChildProcess(argc, argv);
}