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#include <cassert>
#include <jni.h>
#include <memory>
#include <string>
#include <string_view>
#include <utility>
#include "jni.hpp"
#include "libsmb2.h"
namespace {
class Dir {
public:
Dir(std::shared_ptr<smb2_context> context, smb2dir* dir) : context_(std::move(context)), dir_(dir) {
assert(context_ && dir_);
}
~Dir() {
smb2_closedir(context_.get(), dir_);
}
Dir(const Dir&) = delete;
Dir& operator=(const Dir&) = delete;
private:
std::shared_ptr<smb2_context> context_;
smb2dir* const dir_;
};
class Url {
public:
explicit Url(smb2_url* url) : url_(url) {
assert(url_);
}
~Url() {
smb2_destroy_url(url_);
}
Url(const Url&) = delete;
Url& operator=(const Url&) = delete;
[[nodiscard]] const char* path() const { return url_->path; }
[[nodiscard]] const char* server() const { return url_->server; }
[[nodiscard]] const char* share() const { return url_->share; }
[[nodiscard]] const char* user() const { return url_->user; }
private:
smb2_url* url_;
};
class Context {
public:
Context() : context_(smb2_init_context(), ContextDeleter{}) {}
~Context() = default;
Context(const Context&) = delete;
Context& operator=(const Context&) = delete;
[[nodiscard]] std::unique_ptr<Url> ParseUrl(const std::string& url) {
auto* ptr = smb2_parse_url(context_.get(), url.c_str());
return ptr ? std::make_unique<Url>(ptr): nullptr;
}
bool Connect(const Url& url) {
return smb2_connect_share(context_.get(), url.server(), url.share(), url.user()) == 0;
}
[[nodiscard]] std::string_view GetError() {
return smb2_get_error(context_.get());
}
[[nodiscard]] std::unique_ptr<Dir> OpenDir(const std::string& path) {
auto* ptr = smb2_opendir(context_.get(), path.c_str());
return ptr ? std::make_unique<Dir>(context_, ptr) : nullptr;
}
private:
struct ContextDeleter {
void operator()(smb2_context* context) {
smb2_destroy_context(context);
}
};
std::shared_ptr<smb2_context> context_;
};
jlong nativeContextNew(JNIEnv* env, jclass clazz) {
return reinterpret_cast<jlong>(new Context());
}
void nativeContextDestroy(JNIEnv* env, jclass clazz, jlong ptr) {
delete reinterpret_cast<Context*>(ptr);
}
jlong nativeContextParseUrl(JNIEnv* env, jclass clazz, jlong ptr, jstring url) {
return reinterpret_cast<jlong>(reinterpret_cast<Context*>(ptr)->ParseUrl(jni::StringToUTF8(env, jni::ParamRef(env, url))).release());
}
jboolean nativeContextConnect(JNIEnv* env, jclass clazz, jlong context_ptr, jlong url_ptr) {
auto* url = reinterpret_cast<Url*>(url_ptr);
if (!url) return JNI_FALSE;
return reinterpret_cast<Context*>(context_ptr)->Connect(*url) ? JNI_TRUE : JNI_FALSE;
}
jstring nativeContextGetError(JNIEnv* env, jclass clazz, jlong ptr) {
return jni::UTF8ToString(env, std::string(reinterpret_cast<Context*>(ptr)->GetError())).release();
}
jlong nativeContextOpenDir(JNIEnv* env, jclass clazz, jlong ptr, jstring path) {
return reinterpret_cast<jlong>(reinterpret_cast<Context*>(ptr)->OpenDir(jni::StringToUTF8(env, jni::ParamRef<jstring>(env, path))).release());
}
void nativeUrlDestroy(JNIEnv* env, jclass clazz, jlong ptr) {
delete reinterpret_cast<Url*>(ptr);
}
jstring nativeUrlPath(JNIEnv* env, jclass clazz, jlong ptr) {
return jni::UTF8ToString(env, std::string(reinterpret_cast<Url*>(ptr)->path())).release();
}
void nativeDirDestroy(JNIEnv* env, jclass clazz, jlong ptr) {
delete reinterpret_cast<Dir*>(ptr);
}
void RegisterSamba(JNIEnv* env) {
auto clazz = jni::FindClass(env, "org/the_jk/cleversync/io/samba/NativeSamba");
ABORT_IF_NULL(env, clazz);
static const JNINativeMethod methods[] = {
{ "nativeContextNew", "()J", reinterpret_cast<void*>(&nativeContextNew) },
{ "nativeContextDestroy", "(J)V", reinterpret_cast<void*>(&nativeContextDestroy) },
{ "nativeContextParseUrl", "(JLjava/lang/String;)J", reinterpret_cast<void*>(&nativeContextParseUrl) },
{ "nativeContextConnect", "(JJ)Z", reinterpret_cast<void*>(&nativeContextConnect) },
{ "nativeContextGetError", "(J)Ljava/lang/String;", reinterpret_cast<void*>(&nativeContextGetError) },
{ "nativeContextOpenDir", "(JLjava/lang/String;)J", reinterpret_cast<void*>(&nativeContextOpenDir) },
{ "nativeUrlDestroy", "(J)V", reinterpret_cast<void*>(&nativeUrlDestroy) },
{ "nativeUrlPath", "(J)Ljava/lang/String;", reinterpret_cast<void*>(&nativeUrlPath) },
{ "nativeDirDestroy", "(J)V", reinterpret_cast<void*>(&nativeDirDestroy) },
};
auto ret = env->RegisterNatives(clazz.get(), methods, sizeof(methods) / sizeof(methods[0]));
ABORT_IF_NOT_OK(ret);
}
} // namespace
jint JNI_OnLoad(JavaVM *vm, void *reserved) {
auto* env = jni::OnLoad(vm);
RegisterSamba(env);
return jni::JNI_VERSION;
}
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