コード例 #1
0
static jlong nativeCreate(JNIEnv* env, jclass thiz, jint fd, jlong size) {
    initializeLibraryIfNeeded();

    FPDF_FILEACCESS loader;
    loader.m_FileLen = size;
    loader.m_Param = reinterpret_cast<void*>(intptr_t(fd));
    loader.m_GetBlock = &getBlock;

    FPDF_DOCUMENT document = FPDF_LoadCustomDocument(&loader, NULL);

    if (!document) {
        const long error = FPDF_GetLastError();
        switch (error) {
            case FPDF_ERR_PASSWORD:
            case FPDF_ERR_SECURITY: {
                jniThrowExceptionFmt(env, "java/lang/SecurityException",
                        "cannot create document. Error: %ld", error);
            } break;
            default: {
                jniThrowExceptionFmt(env, "java/io/IOException",
                        "cannot create document. Error: %ld", error);
            } break;
        }
        destroyLibraryIfNeeded();
        return -1;
    }

    return reinterpret_cast<jlong>(document);
}
コード例 #2
0
static jstring AlphabeticIndex_getBucketLabel(JNIEnv* env, jclass, jlong peer, jint index) {
  if (index < 0) {
    jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", "Invalid index: %d", index);
    return NULL;
  }

  // Iterate to the nth bucket.
  AlphabeticIndex* ai = fromPeer(peer);
  UErrorCode status = U_ZERO_ERROR;
  ai->resetBucketIterator(status);
  if (maybeThrowIcuException(env, "AlphabeticIndex::resetBucketIterator", status)) {
    return NULL;
  }
  for (jint i = 0; i <= index; ++i) {
    if (!ai->nextBucket(status)) {
      jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", "Invalid index: %d", index);
      return NULL;
    }
    if (maybeThrowIcuException(env, "AlphabeticIndex::nextBucket", status)) {
      return NULL;
    }
  }

  // Return "" for the underflow/inflow/overflow buckets.
  if (ai->getBucketLabelType() != U_ALPHAINDEX_NORMAL) {
    return env->NewStringUTF("");
  }

  const UnicodeString& label(ai->getBucketLabel());
  return env->NewString(label.getBuffer(), label.length());
}
コード例 #3
0
jobject sockaddrToInetAddress(JNIEnv* env, const sockaddr_storage* ss, jint* port) {
    // Convert IPv4-mapped IPv6 addresses to IPv4 addresses.
    // The RI states "Java will never return an IPv4-mapped address".
    sockaddr_storage tmp;
    memset(&tmp, 0, sizeof(tmp));
    const sockaddr_in6* sin6 = reinterpret_cast<const sockaddr_in6*>(ss);
    if (ss->ss_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
        // Copy the IPv6 address into the temporary sockaddr_storage.
        memcpy(&tmp, ss, sizeof(tmp));
        // Unmap it into an IPv4 address.
        sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(&tmp);
        sin->sin_family = AF_INET;
        sin->sin_port = sin6->sin6_port;
        memcpy(&sin->sin_addr.s_addr, &sin6->sin6_addr.s6_addr[12], 4);
        // Fall through into the regular conversion using the unmapped address.
        ss = &tmp;
    }

    const void* rawAddress;
    size_t addressLength;
    int sin_port;
    int scope_id = 0;
    if (ss->ss_family == AF_INET) {
        const sockaddr_in* sin = reinterpret_cast<const sockaddr_in*>(ss);
        rawAddress = &sin->sin_addr.s_addr;
        addressLength = 4;
        sin_port = ntohs(sin->sin_port);
    } else if (ss->ss_family == AF_INET6) {
        const sockaddr_in6* sin6 = reinterpret_cast<const sockaddr_in6*>(ss);
        rawAddress = &sin6->sin6_addr.s6_addr;
        addressLength = 16;
        sin_port = ntohs(sin6->sin6_port);
        scope_id = sin6->sin6_scope_id;
    } else {
        // We can't throw SocketException. We aren't meant to see bad addresses, so seeing one
        // really does imply an internal error.
        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
                "sockaddrToInetAddress bad ss_family: %i", ss->ss_family);
        return NULL;
    }
    if (port != NULL) {
        *port = sin_port;
    }

    ScopedLocalRef<jbyteArray> byteArray(env, env->NewByteArray(addressLength));
    if (byteArray.get() == NULL) {
        return NULL;
    }
    env->SetByteArrayRegion(byteArray.get(), 0, addressLength,
            reinterpret_cast<const jbyte*>(rawAddress));

    static jmethodID getByAddressMethod = env->GetStaticMethodID(JniConstants::inetAddressClass,
            "getByAddress", "(Ljava/lang/String;[BI)Ljava/net/InetAddress;");
    if (getByAddressMethod == NULL) {
        return NULL;
    }
    return env->CallStaticObjectMethod(JniConstants::inetAddressClass, getByAddressMethod,
            NULL, byteArray.get(), scope_id);
}
コード例 #4
0
static void nativeWrite(JNIEnv* env, jclass thiz, jlong documentPtr, jint fd) {
    FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr);
    PdfToFdWriter writer;
    writer.dstFd = fd;
    writer.WriteBlock = &writeBlock;
    const bool success = FPDF_SaveAsCopy(document, &writer, FPDF_NO_INCREMENTAL);
    if (!success) {
        jniThrowExceptionFmt(env, "java/io/IOException",
                "cannot write to fd. Error: %d", errno);
        destroyLibraryIfNeeded();
    }
}
static void android_net_utils_attachRaFilter(JNIEnv *env, jobject clazz, jobject javaFd,
        jint hardwareAddressType)
{
    if (hardwareAddressType != ARPHRD_ETHER) {
        jniThrowExceptionFmt(env, "java/net/SocketException",
                "attachRaFilter only supports ARPHRD_ETHER");
        return;
    }

    uint32_t ipv6_offset = sizeof(ether_header);
    uint32_t ipv6_next_header_offset = ipv6_offset + offsetof(ip6_hdr, ip6_nxt);
    uint32_t icmp6_offset = ipv6_offset + sizeof(ip6_hdr);
    uint32_t icmp6_type_offset = icmp6_offset + offsetof(icmp6_hdr, icmp6_type);
    struct sock_filter filter_code[] = {
        // Check IPv6 Next Header is ICMPv6.
        BPF_STMT(BPF_LD  | BPF_B   | BPF_ABS,  ipv6_next_header_offset),
        BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K,    IPPROTO_ICMPV6, 0, 3),

        // Check ICMPv6 type is Router Advertisement.
        BPF_STMT(BPF_LD  | BPF_B   | BPF_ABS,  icmp6_type_offset),
        BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K,    ND_ROUTER_ADVERT, 0, 1),

        // Accept or reject.
        BPF_STMT(BPF_RET | BPF_K,              0xffff),
        BPF_STMT(BPF_RET | BPF_K,              0)
    };
    struct sock_fprog filter = {
        sizeof(filter_code) / sizeof(filter_code[0]),
        filter_code,
    };

    int fd = jniGetFDFromFileDescriptor(env, javaFd);
    if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) {
        jniThrowExceptionFmt(env, "java/net/SocketException",
                "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno));
    }
}
コード例 #6
0
static jstring ImmutableIndex_getBucketLabel(JNIEnv* env, jclass, jlong peer, jint index) {
  AlphabeticIndex::ImmutableIndex* ii = immutableIndexFromPeer(peer);
  const AlphabeticIndex::Bucket* bucket = ii->getBucket(index);
  if (bucket == NULL) {
    jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", "Invalid index: %d", index);
    return NULL;
  }

  // Return "" for the underflow/inflow/overflow buckets.
  if (bucket->getLabelType() != U_ALPHAINDEX_NORMAL) {
    return env->NewStringUTF("");
  }

  const UnicodeString& label(bucket->getLabel());
  return env->NewString(label.getBuffer(), label.length());
}
コード例 #7
0
static jlong nativeOpen(JNIEnv* env, jclass thiz, jint fd, jlong size) {
    initializeLibraryIfNeeded();

    FPDF_FILEACCESS loader;
    loader.m_FileLen = size;
    loader.m_Param = reinterpret_cast<void*>(intptr_t(fd));
    loader.m_GetBlock = &getBlock;

    FPDF_DOCUMENT document = FPDF_LoadCustomDocument(&loader, NULL);

    if (!document) {
        const long error = FPDF_GetLastError();
        jniThrowExceptionFmt(env, "java/io/IOException",
                "cannot create document. Error: %ld", error);
        destroyLibraryIfNeeded();
        return -1;
    }

    return reinterpret_cast<jlong>(document);
}
static void android_net_utils_attachDhcpFilter(JNIEnv *env, jobject clazz, jobject javaFd)
{
    uint32_t ip_offset = sizeof(ether_header);
    uint32_t proto_offset = ip_offset + offsetof(iphdr, protocol);
    uint32_t flags_offset = ip_offset + offsetof(iphdr, frag_off);
    uint32_t dport_indirect_offset = ip_offset + offsetof(udphdr, dest);
    struct sock_filter filter_code[] = {
        // Check the protocol is UDP.
        BPF_STMT(BPF_LD  | BPF_B   | BPF_ABS,  proto_offset),
        BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K,    IPPROTO_UDP, 0, 6),

        // Check this is not a fragment.
        BPF_STMT(BPF_LD  | BPF_H    | BPF_ABS, flags_offset),
        BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K,   0x1fff, 4, 0),

        // Get the IP header length.
        BPF_STMT(BPF_LDX | BPF_B    | BPF_MSH, ip_offset),

        // Check the destination port.
        BPF_STMT(BPF_LD  | BPF_H    | BPF_IND, dport_indirect_offset),
        BPF_JUMP(BPF_JMP | BPF_JEQ  | BPF_K,   kDhcpClientPort, 0, 1),

        // Accept or reject.
        BPF_STMT(BPF_RET | BPF_K,              0xffff),
        BPF_STMT(BPF_RET | BPF_K,              0)
    };
    struct sock_fprog filter = {
        sizeof(filter_code) / sizeof(filter_code[0]),
        filter_code,
    };

    int fd = jniGetFDFromFileDescriptor(env, javaFd);
    if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) {
        jniThrowExceptionFmt(env, "java/net/SocketException",
                "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno));
    }
}
コード例 #9
0
static bool inetAddressToSockaddr(JNIEnv* env, jobject inetAddress, int port, sockaddr_storage* ss, bool map) {
    memset(ss, 0, sizeof(*ss));

    if (inetAddress == NULL) {
        jniThrowNullPointerException(env, NULL);
        return false;
    }

    // Get the address family.
    static jfieldID familyFid = env->GetFieldID(JniConstants::inetAddressClass, "family", "I");
    ss->ss_family = env->GetIntField(inetAddress, familyFid);
    if (ss->ss_family == AF_UNSPEC) {
        return true; // Job done!
    }

    // Check this is an address family we support.
    if (ss->ss_family != AF_INET && ss->ss_family != AF_INET6) {
        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
                "inetAddressToSockaddr bad family: %i", ss->ss_family);
        return false;
    }

    // Get the byte array that stores the IP address bytes in the InetAddress.
    static jfieldID bytesFid = env->GetFieldID(JniConstants::inetAddressClass, "ipaddress", "[B");
    ScopedLocalRef<jbyteArray> addressBytes(env, reinterpret_cast<jbyteArray>(env->GetObjectField(inetAddress, bytesFid)));
    if (addressBytes.get() == NULL) {
        jniThrowNullPointerException(env, NULL);
        return false;
    }

    // We use AF_INET6 sockets, so we want an IPv6 address (which may be a IPv4-mapped address).
    sockaddr_in6* sin6 = reinterpret_cast<sockaddr_in6*>(ss);
    sin6->sin6_port = htons(port);
    if (ss->ss_family == AF_INET6) {
        // IPv6 address. Copy the bytes...
        jbyte* dst = reinterpret_cast<jbyte*>(&sin6->sin6_addr.s6_addr);
        env->GetByteArrayRegion(addressBytes.get(), 0, 16, dst);
        // ...and set the scope id...
        static jfieldID scopeFid = env->GetFieldID(JniConstants::inet6AddressClass, "scope_id", "I");
        sin6->sin6_scope_id = env->GetIntField(inetAddress, scopeFid);
        return true;
    }

    // Deal with Inet4Address instances.
    if (map) {
        // We should represent this Inet4Address as an IPv4-mapped IPv6 sockaddr_in6.
        // Change the family...
        sin6->sin6_family = AF_INET6;
        // Copy the bytes...
        jbyte* dst = reinterpret_cast<jbyte*>(&sin6->sin6_addr.s6_addr[12]);
        env->GetByteArrayRegion(addressBytes.get(), 0, 4, dst);
        // INADDR_ANY and in6addr_any are both all-zeros...
        if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
            // ...but all other IPv4-mapped addresses are ::ffff:a.b.c.d, so insert the ffff...
            memset(&(sin6->sin6_addr.s6_addr[10]), 0xff, 2);
        }
    } else {
        // We should represent this Inet4Address as an IPv4 sockaddr_in.
        sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(ss);
        sin->sin_port = htons(port);
        jbyte* dst = reinterpret_cast<jbyte*>(&sin->sin_addr.s_addr);
        env->GetByteArrayRegion(addressBytes.get(), 0, 4, dst);
    }
    return true;
}
コード例 #10
0
ファイル: osfs.hpp プロジェクト: Zengwn/android-platform-ndk
inline int jniThrowExceptionFmt(JNIEnv* env, const char* className, const char* fmt, ...) {
    va_list args;
    va_start(args, fmt);
    return jniThrowExceptionFmt(env, className, fmt, args);
    va_end(args);
}
コード例 #11
0
jobject sockaddrToInetAddress(JNIEnv* env, const sockaddr_storage& ss, jint* port) {
    // Convert IPv4-mapped IPv6 addresses to IPv4 addresses.
    // The RI states "Java will never return an IPv4-mapped address".
    const sockaddr_in6& sin6 = reinterpret_cast<const sockaddr_in6&>(ss);
    if (ss.ss_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&sin6.sin6_addr)) {
        // Copy the IPv6 address into the temporary sockaddr_storage.
        sockaddr_storage tmp;
        memset(&tmp, 0, sizeof(tmp));
        memcpy(&tmp, &ss, sizeof(sockaddr_in6));
        // Unmap it into an IPv4 address.
        sockaddr_in& sin = reinterpret_cast<sockaddr_in&>(tmp);
        sin.sin_family = AF_INET;
        sin.sin_port = sin6.sin6_port;
        memcpy(&sin.sin_addr.s_addr, &sin6.sin6_addr.s6_addr[12], 4);
        // Do the regular conversion using the unmapped address.
        return sockaddrToInetAddress(env, tmp, port);
    }

    const void* rawAddress;
    size_t addressLength;
    int sin_port = 0;
    int scope_id = 0;
    if (ss.ss_family == AF_INET) {
        const sockaddr_in& sin = reinterpret_cast<const sockaddr_in&>(ss);
        rawAddress = &sin.sin_addr.s_addr;
        addressLength = 4;
        sin_port = ntohs(sin.sin_port);
    } else if (ss.ss_family == AF_INET6) {
        const sockaddr_in6& sin6 = reinterpret_cast<const sockaddr_in6&>(ss);
        rawAddress = &sin6.sin6_addr.s6_addr;
        addressLength = 16;
        sin_port = ntohs(sin6.sin6_port);
        scope_id = sin6.sin6_scope_id;
    } else if (ss.ss_family == AF_UNIX) {
        const sockaddr_un& sun = reinterpret_cast<const sockaddr_un&>(ss);
        rawAddress = &sun.sun_path;
        addressLength = strlen(sun.sun_path);
    } else {
        // We can't throw SocketException. We aren't meant to see bad addresses, so seeing one
        // really does imply an internal error.
        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
                             "sockaddrToInetAddress unsupported ss_family: %i", ss.ss_family);
        return NULL;
    }
    if (port != NULL) {
        *port = sin_port;
    }

    ScopedLocalRef<jbyteArray> byteArray(env, env->NewByteArray(addressLength));
    if (byteArray.get() == NULL) {
        return NULL;
    }
    env->SetByteArrayRegion(byteArray.get(), 0, addressLength,
            reinterpret_cast<const jbyte*>(rawAddress));

    if (ss.ss_family == AF_UNIX) {
        // Note that we get here for AF_UNIX sockets on accept(2). The unix(7) man page claims
        // that the peer's sun_path will contain the path, but in practice it doesn't, and the
        // peer length is returned as 2 (meaning only the sun_family field was set).
        static jmethodID ctor = env->GetMethodID(JniConstants::inetUnixAddressClass, "<init>", "([B)V");
        return env->NewObject(JniConstants::inetUnixAddressClass, ctor, byteArray.get());
    }

    static jmethodID getByAddressMethod = env->GetStaticMethodID(JniConstants::inetAddressClass,
            "getByAddress", "(Ljava/lang/String;[BI)Ljava/net/InetAddress;");
    if (getByAddressMethod == NULL) {
        return NULL;
    }
    return env->CallStaticObjectMethod(JniConstants::inetAddressClass, getByAddressMethod,
            NULL, byteArray.get(), scope_id);
}
コード例 #12
0
static bool inetAddressToSockaddr(JNIEnv* env, jobject inetAddress, int port, sockaddr_storage& ss, socklen_t& sa_len, bool map) {
    memset(&ss, 0, sizeof(ss));
    sa_len = 0;

    if (inetAddress == NULL) {
        jniThrowNullPointerException(env, NULL);
        return false;
    }

    // Get the address family.
    static jfieldID familyFid = env->GetFieldID(JniConstants::inetAddressClass, "family", "I");
    ss.ss_family = env->GetIntField(inetAddress, familyFid);
    if (ss.ss_family == AF_UNSPEC) {
        sa_len = sizeof(ss.ss_family);
        return true; // Job done!
    }

    // Check this is an address family we support.
    if (ss.ss_family != AF_INET && ss.ss_family != AF_INET6 && ss.ss_family != AF_UNIX) {
        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
                "inetAddressToSockaddr bad family: %i", ss.ss_family);
        return false;
    }

    // Get the byte array that stores the IP address bytes in the InetAddress.
    static jfieldID bytesFid = env->GetFieldID(JniConstants::inetAddressClass, "ipaddress", "[B");
    ScopedLocalRef<jbyteArray> addressBytes(env, reinterpret_cast<jbyteArray>(env->GetObjectField(inetAddress, bytesFid)));
    if (addressBytes.get() == NULL) {
        jniThrowNullPointerException(env, NULL);
        return false;
    }

    // Handle the AF_UNIX special case.
    if (ss.ss_family == AF_UNIX) {
        sockaddr_un& sun = reinterpret_cast<sockaddr_un&>(ss);

        size_t path_length = env->GetArrayLength(addressBytes.get());
        if (path_length >= sizeof(sun.sun_path)) {
            jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
                                 "inetAddressToSockaddr path too long for AF_UNIX: %i", path_length);
            return false;
        }

        // Copy the bytes...
        jbyte* dst = reinterpret_cast<jbyte*>(&sun.sun_path);
        memset(dst, 0, sizeof(sun.sun_path));
        env->GetByteArrayRegion(addressBytes.get(), 0, path_length, dst);
        sa_len = sizeof(sun.sun_path);
        return true;
    }

    // TODO: bionic's getnameinfo(3) seems to want its length parameter to be exactly
    // sizeof(sockaddr_in) for an IPv4 address and sizeof (sockaddr_in6) for an
    // IPv6 address. Fix getnameinfo so it accepts sizeof(sockaddr_storage), and
    // then unconditionally set sa_len to sizeof(sockaddr_storage) instead of having
    // to deal with this case by case.

    // We use AF_INET6 sockets, so we want an IPv6 address (which may be a IPv4-mapped address).
    sockaddr_in6& sin6 = reinterpret_cast<sockaddr_in6&>(ss);
    sin6.sin6_port = htons(port);
    if (ss.ss_family == AF_INET6) {
        // IPv6 address. Copy the bytes...
        jbyte* dst = reinterpret_cast<jbyte*>(&sin6.sin6_addr.s6_addr);
        env->GetByteArrayRegion(addressBytes.get(), 0, 16, dst);
        // ...and set the scope id...
        static jfieldID scopeFid = env->GetFieldID(JniConstants::inet6AddressClass, "scope_id", "I");
        sin6.sin6_scope_id = env->GetIntField(inetAddress, scopeFid);
        sa_len = sizeof(sockaddr_in6);
        return true;
    }

    // Deal with Inet4Address instances.
    if (map) {
        // We should represent this Inet4Address as an IPv4-mapped IPv6 sockaddr_in6.
        // Change the family...
        sin6.sin6_family = AF_INET6;
        // Copy the bytes...
        jbyte* dst = reinterpret_cast<jbyte*>(&sin6.sin6_addr.s6_addr[12]);
        env->GetByteArrayRegion(addressBytes.get(), 0, 4, dst);
        // INADDR_ANY and in6addr_any are both all-zeros...
        if (!IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) {
            // ...but all other IPv4-mapped addresses are ::ffff:a.b.c.d, so insert the ffff...
            memset(&(sin6.sin6_addr.s6_addr[10]), 0xff, 2);
        }
        sa_len = sizeof(sockaddr_in6);
    } else {
        // We should represent this Inet4Address as an IPv4 sockaddr_in.
        sockaddr_in& sin = reinterpret_cast<sockaddr_in&>(ss);
        sin.sin_port = htons(port);
        jbyte* dst = reinterpret_cast<jbyte*>(&sin.sin_addr.s_addr);
        env->GetByteArrayRegion(addressBytes.get(), 0, 4, dst);
        sa_len = sizeof(sockaddr_in);
    }
    return true;
}