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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/content_uri_utils.h"
#include <sys/stat.h>
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/files/file.h"
#include "base/logging.h"
#include "base/time/time.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "base/content_uri_utils_jni/ContentUriUtils_jni.h"
using base::android::ConvertUTF8ToJavaString;
using base::android::JavaParamRef;
using base::android::JavaRef;
using base::android::ScopedJavaLocalRef;
namespace base {
namespace internal {
bool ContentUriExists(const FilePath& content_uri) {
JNIEnv* env = android::AttachCurrentThread();
return Java_ContentUriUtils_contentUriExists(env, content_uri.value());
}
std::optional<std::string> TranslateOpenFlagsToJavaMode(uint32_t open_flags) {
// The allowable modes from ParcelFileDescriptor#parseMode() are
// ("r", "w", "wt", "wa", "rw", "rwt"), we disallow "w" which has been the
// source of android security issues.
// Ignore async.
open_flags &= ~File::FLAG_ASYNC;
switch (open_flags) {
case File::FLAG_OPEN | File::FLAG_READ:
return "r";
case File::FLAG_OPEN_ALWAYS | File::FLAG_READ | File::FLAG_WRITE:
return "rw";
case File::FLAG_OPEN_ALWAYS | File::FLAG_APPEND:
return "wa";
case File::FLAG_CREATE_ALWAYS | File::FLAG_READ | File::FLAG_WRITE:
return "rwt";
case File::FLAG_CREATE_ALWAYS | File::FLAG_WRITE:
return "wt";
default:
return std::nullopt;
}
}
ScopedJavaLocalRef<jobject> OpenContentUri(const FilePath& content_uri,
uint32_t open_flags) {
JNIEnv* env = android::AttachCurrentThread();
auto mode = TranslateOpenFlagsToJavaMode(open_flags);
CHECK(mode.has_value()) << "Unsupported flags=0x" << std::hex << open_flags;
return Java_ContentUriUtils_openContentUri(env, content_uri.value(), *mode);
}
int ContentUriGetFd(const JavaRef<jobject>& java_parcel_file_descriptor) {
if (!java_parcel_file_descriptor) {
return -1;
}
JNIEnv* env = android::AttachCurrentThread();
int fd = Java_ContentUriUtils_getFd(env, java_parcel_file_descriptor);
return dup(fd);
}
void ContentUriClose(const JavaRef<jobject>& java_parcel_file_descriptor) {
JNIEnv* env = android::AttachCurrentThread();
Java_ContentUriUtils_close(env, java_parcel_file_descriptor);
}
bool ContentUriGetFileInfo(const FilePath& content_uri,
FileEnumerator::FileInfo* info) {
JNIEnv* env = android::AttachCurrentThread();
std::vector<FileEnumerator::FileInfo> list;
Java_ContentUriUtils_getFileInfo(env, content_uri.value(),
reinterpret_cast<jlong>(&list));
// Java will call back sync to AddFileInfoToVector(&list).
if (list.empty()) {
return false;
}
// Android can return -1 for unknown size, which
// we can't deal with, so we will consider that the file wasn't found.
if (list[0].GetSize() < 0) {
LOG(ERROR) << "Unknown file length for " << content_uri;
return false;
}
*info = std::move(list[0]);
return true;
}
std::vector<FileEnumerator::FileInfo> ListContentUriDirectory(
const FilePath& content_uri) {
JNIEnv* env = android::AttachCurrentThread();
std::vector<FileEnumerator::FileInfo> result;
Java_ContentUriUtils_listDirectory(env, content_uri.value(),
reinterpret_cast<jlong>(&result));
// Java will call back sync to AddFileInfoToVector(&result).
return result;
}
bool DeleteContentUri(const FilePath& content_uri) {
DCHECK(content_uri.IsContentUri());
JNIEnv* env = android::AttachCurrentThread();
return Java_ContentUriUtils_delete(env, content_uri.value());
}
bool IsDocumentUri(const FilePath& content_uri) {
DCHECK(content_uri.IsContentUri());
JNIEnv* env = android::AttachCurrentThread();
return Java_ContentUriUtils_isDocumentUri(env, content_uri.value());
}
} // namespace internal
void JNI_ContentUriUtils_AddFileInfoToVector(JNIEnv* env,
jlong vector_pointer,
std::string& uri,
std::string& display_name,
jboolean is_directory,
jlong size,
jlong last_modified) {
auto* result =
reinterpret_cast<std::vector<FileEnumerator::FileInfo>*>(vector_pointer);
result->emplace_back(FilePath(uri), FilePath(display_name), is_directory,
size,
Time::FromMillisecondsSinceUnixEpoch(last_modified));
}
std::string GetContentUriMimeType(const FilePath& content_uri) {
JNIEnv* env = android::AttachCurrentThread();
return Java_ContentUriUtils_getMimeType(env, content_uri.value());
}
bool MaybeGetFileDisplayName(const FilePath& content_uri,
std::u16string* file_display_name) {
if (!content_uri.IsContentUri()) {
return false;
}
DCHECK(file_display_name);
JNIEnv* env = android::AttachCurrentThread();
ScopedJavaLocalRef<jstring> j_display_name =
Java_ContentUriUtils_maybeGetDisplayName(env, content_uri.value());
if (j_display_name.is_null()) {
return false;
}
*file_display_name = android::ConvertJavaStringToUTF16(j_display_name);
return true;
}
FilePath ContentUriBuildDocumentUriUsingTree(
const FilePath& tree_uri,
const std::string& encoded_document_id) {
JNIEnv* env = android::AttachCurrentThread();
std::string j_uri = Java_ContentUriUtils_buildDocumentUriUsingTree(
env, tree_uri.value(), encoded_document_id);
return FilePath(j_uri);
}
FilePath ContentUriGetChildDocumentOrQuery(const FilePath& parent,
const std::string& display_name,
const std::string& mime_type,
bool is_directory,
bool create) {
JNIEnv* env = android::AttachCurrentThread();
std::string j_uri = Java_ContentUriUtils_getChildDocumentOrQuery(
env, parent.value(), display_name, mime_type, is_directory, create);
return FilePath(j_uri);
}
bool ContentUriIsCreateChildDocumentQuery(const FilePath& content_uri) {
JNIEnv* env = android::AttachCurrentThread();
return Java_ContentUriUtils_isCreateChildDocumentQuery(env,
content_uri.value());
}
FilePath ContentUriGetDocumentFromQuery(const FilePath& content_uri,
bool create) {
JNIEnv* env = android::AttachCurrentThread();
std::string j_uri = Java_ContentUriUtils_getDocumentFromQuery(
env, content_uri.value(), create);
return FilePath(j_uri);
}
} // namespace base
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