Telegram-Android/TMessagesProj/jni/utilities.cpp

#include <jni.h>
#include <sys/stat.h>
#include <climits>
#include <unistd.h>
#include <string>

#include <android/log.h>
#include "breakpad/src/client/linux/handler/exception_handler.h"
#include "breakpad/src/client/linux/handler/minidump_descriptor.h"


thread_local static char buf[PATH_MAX + 1];

extern "C" JNIEXPORT jstring Java_org_telegram_messenger_Utilities_readlink(JNIEnv *env, jclass clazz, jstring path) {
    const char *fileName = env->GetStringUTFChars(path, NULL);
    ssize_t result = readlink(fileName, buf, PATH_MAX);
    jstring value = 0;
    if (result != -1) {
        buf[result] = '\0';
        value = env->NewStringUTF(buf);
    }
    env->ReleaseStringUTFChars(path, fileName);
    return value;
}

extern "C" JNIEXPORT jstring Java_org_telegram_messenger_Utilities_readlinkFd(JNIEnv *env, jclass clazz, int fd) {
    std::string path = "/proc/self/fd/";
    path += fd;
    ssize_t result = readlink(path.c_str(), buf, PATH_MAX);
    jstring value = 0;
    if (result != -1) {
        buf[result] = '\0';
        value = env->NewStringUTF(buf);
    }
    return value;
}

bool dumpCallback(const google_breakpad::MinidumpDescriptor &descriptor,
                  void *context,
                  bool succeeded) {

    __android_log_print(ANDROID_LOG_DEBUG, "tmessages",
                        "Wrote breakpad minidump at %s succeeded=%d\n", descriptor.path(),
                        succeeded);
    return false;
}

extern "C"
JNIEXPORT void JNICALL
Java_org_telegram_messenger_Utilities_setupNativeCrashesListener(JNIEnv *env, jclass clazz,
                                                                 jstring path) {
    const char *dumpPath = (char *) env->GetStringUTFChars(path, NULL);
    google_breakpad::MinidumpDescriptor descriptor(dumpPath);
    new google_breakpad::ExceptionHandler(descriptor, NULL, dumpCallback, NULL, true, -1);
    env->ReleaseStringUTFChars(path, dumpPath);
}