wxhelper/src/db.cc
2023-06-01 08:42:04 +08:00

582 lines
20 KiB
C++

#include "pch.h"
#include "db.h"
#include "base64.h"
#include "wechat_function.h"
#include "utils.h"
using namespace std;
namespace wxhelper {
void DB::init(DWORD base) {
base_addr_ = base;
dbmap_ = {};
dbs_ = {};
}
void FreeResult(vector<vector<SqlResult>> &data) {
if (data.size() == 0) {
return;
}
for (unsigned int i = 0; i < data.size(); i++) {
for (unsigned j = 0; j < data[i].size(); j++) {
SqlResult *sr = (SqlResult *)&data[i][j];
if (sr->column_name) {
delete[] sr->column_name;
sr->column_name = NULL;
}
if (sr->content) {
delete[] sr->content;
sr->content = NULL;
}
}
data[i].clear();
}
data.clear();
}
int DB::SelectDataInner(DWORD db, const char *sql,
vector<vector<SqlResult>> &data) {
Sqlite3_prepare p_Sqlite3_prepare =
(Sqlite3_prepare)(base_addr_ + SQLITE3_PREPARE_OFFSET);
Sqlite3_step p_Sqlite3_step =
(Sqlite3_step)(base_addr_ + SQLITE3_STEP_OFFSET);
Sqlite3_column_count p_Sqlite3_column_count =
(Sqlite3_column_count)(base_addr_ + SQLITE3_COLUMN_COUNT_OFFSET);
Sqlite3_column_name p_Sqlite3_column_name =
(Sqlite3_column_name)(base_addr_ + SQLITE3_COLUMN_NAME_OFFSET);
Sqlite3_column_type p_Sqlite3_column_type =
(Sqlite3_column_type)(base_addr_ + SQLITE3_COLUMN_TYPE_OFFSET);
Sqlite3_column_blob p_Sqlite3_column_blob =
(Sqlite3_column_blob)(base_addr_ + SQLITE3_COLUMN_BLOB_OFFSET);
Sqlite3_column_bytes p_Sqlite3_column_bytes =
(Sqlite3_column_bytes)(base_addr_ + SQLITE3_COLUMN_BYTES_OFFSET);
Sqlite3_finalize p_Sqlite3_finalize =
(Sqlite3_finalize)(base_addr_ + SQLITE3_FINALIZE_OFFSET);
DWORD *stmt;
int rc = p_Sqlite3_prepare(db, sql, -1, &stmt, 0);
if (rc != SQLITE_OK) return NULL;
while (p_Sqlite3_step(stmt) == SQLITE_ROW) {
int col_count = p_Sqlite3_column_count(stmt);
vector<SqlResult> tempStruct;
for (int i = 0; i < col_count; i++) {
SqlResult temp = {0};
const char *ColName = p_Sqlite3_column_name(stmt, i);
int nType = p_Sqlite3_column_type(stmt, i);
const void *pReadBlobData = p_Sqlite3_column_blob(stmt, i);
int nLength = p_Sqlite3_column_bytes(stmt, i);
temp.column_name = new char[strlen(ColName) + 1];
memcpy(temp.column_name, ColName, strlen(ColName) + 1);
temp.column_name_len = strlen(ColName);
temp.content_len = nLength;
switch (nType) {
case SQLITE_BLOB: {
temp.content = new char[nLength];
memcpy(temp.content, pReadBlobData, nLength);
temp.is_blob = true;
break;
}
default: {
if (nLength != 0) {
temp.content = new char[nLength + 1];
memcpy(temp.content, pReadBlobData, nLength + 1);
} else {
temp.content = new char[2];
ZeroMemory(temp.content, 2);
}
temp.is_blob = false;
break;
}
}
tempStruct.push_back(temp);
}
data.push_back(tempStruct);
}
p_Sqlite3_finalize(stmt);
return 1;
}
int DB::Select(DWORD db_hanle, const char *sql,
vector<vector<string>> &query_result) {
vector<vector<SqlResult>> data;
int status = SelectDataInner(db_hanle, sql, data);
if (status == 0) {
return 0;
}
if (data.size() == 0) {
return 1;
}
vector<string> index;
for (size_t i = 0; i < data[0].size(); i++) {
index.push_back(data[0][i].column_name);
}
query_result.push_back(index);
for (auto it : data) {
vector<string> item;
for (size_t i = 0; i < it.size(); i++) {
if (!it[i].is_blob) {
bool is_utf8 = Utils::IsTextUtf8(it[i].content, it[i].content_len);
if (is_utf8) {
string content(it[i].content);
item.push_back(content);
} else {
string base64_str =
base64_encode((BYTE *)it[i].content, it[i].content_len);
item.push_back(base64_str);
}
} else {
string b64_str =
base64_encode((BYTE *)it[i].content, it[i].content_len);
item.push_back(b64_str);
}
}
query_result.push_back(item);
}
FreeResult(data);
return 1;
}
int SelectDbInfo(void *data, int argc, char **argv, char **name) {
vector<SqlResult> result;
for (int i = 0; i < argc; i++) {
SqlResult temp = {0};
temp.column_name = new char[strlen(name[i]) + 1];
memcpy(temp.column_name, name[i], strlen(name[i]) + 1);
temp.column_name_len = strlen(name[i]);
if (argv[i]) {
temp.content = new char[strlen(argv[i]) + 1];
memcpy(temp.content, argv[i], strlen(argv[i]) + 1);
temp.content_len = strlen(argv[i]);
} else {
temp.content = new char[2];
ZeroMemory(temp.content, 2);
temp.content_len = 0;
}
result.push_back(temp);
}
return 1;
}
int DB::ExecuteSQL(DWORD db, const char *sql, DWORD callback, void *data) {
DWORD sqlite3_exec_addr = base_addr_ + SQLITE3_EXEC_OFFSET;
Sqlite3_exec fn_sqlite3_exec = (Sqlite3_exec)sqlite3_exec_addr;
int status = fn_sqlite3_exec(db, sql, (Sqlite3_callback)callback, data, 0);
return status;
}
int GetDbInfo(void *data, int argc, char **argv, char **name) {
DatabaseInfo *pdata = (DatabaseInfo *)data;
TableInfo tb = {0};
if (argv[1]) {
tb.name = new char[strlen(argv[1]) + 1];
memcpy(tb.name, argv[1], strlen(argv[1]) + 1);
} else {
tb.name = (char *)"NULL";
}
if (argv[2]) {
tb.table_name = new char[strlen(argv[2]) + 1];
memcpy(tb.table_name, argv[2], strlen(argv[2]) + 1);
} else {
tb.table_name = (char *)"NULL";
}
if (argv[3]) {
tb.rootpage = new char[strlen(argv[3]) + 1];
memcpy(tb.rootpage, argv[3], strlen(argv[3]) + 1);
} else {
tb.rootpage = (char *)"NULL";
}
if (argv[4]) {
tb.sql = new char[strlen(argv[4]) + 1];
memcpy(tb.sql, argv[4], strlen(argv[4]) + 1);
} else {
tb.sql = (char *)"NULL";
}
tb.name_len = strlen(tb.name);
tb.table_name_len = strlen(tb.table_name);
tb.sql_len = strlen(tb.sql);
tb.rootpage_len = strlen(tb.rootpage);
pdata->tables.push_back(tb);
pdata->count = pdata->tables.size();
return 0;
}
std::vector<void *> DB::GetDbHandles() {
dbs_.clear();
dbmap_.clear();
DWORD p_contact_addr = *(DWORD *)(base_addr_ + CONTACT_G_PINSTANCE_OFFSET);
DWORD micro_msg_db_addr = *(DWORD *)(p_contact_addr + DB_MICRO_MSG_OFFSET);
DWORD chat_msg_db_addr = *(DWORD *)(p_contact_addr + DB_CHAT_MSG_OFFSET);
DWORD misc_db_addr = *(DWORD *)(p_contact_addr + DB_MISC_OFFSET);
DWORD emotion_db_addr = *(DWORD *)(p_contact_addr + DB_EMOTION_OFFSET);
DWORD media_db_addr = *(DWORD *)(p_contact_addr + DB_MEDIA_OFFSET);
DWORD bizchat_msg_db_addr =
*(DWORD *)(p_contact_addr + DB_BIZCHAT_MSG_OFFSET);
DWORD function_msg_db_addr =
*(DWORD *)(p_contact_addr + DB_FUNCTION_MSG_OFFSET);
// microMsg.db
DatabaseInfo micro_msg_db{0};
micro_msg_db.db_name = (wchar_t *)(*(
DWORD *)(p_contact_addr + DB_MICRO_MSG_OFFSET + DB_NAME_OFFSET));
micro_msg_db.db_name_len =
*(DWORD *)(p_contact_addr + DB_MICRO_MSG_OFFSET + DB_NAME_OFFSET + 0x4);
micro_msg_db.handle = micro_msg_db_addr;
ExecuteSQL(micro_msg_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &micro_msg_db);
dbs_.push_back(micro_msg_db);
wstring micro_msg_name = wstring((wchar_t *)(*(
DWORD *)(p_contact_addr + DB_MICRO_MSG_OFFSET + DB_NAME_OFFSET)));
dbmap_[micro_msg_name] = micro_msg_db;
// chatMsg.db
DatabaseInfo chat_msg_db{0};
chat_msg_db.db_name = (wchar_t *)(*(
DWORD *)(p_contact_addr + DB_CHAT_MSG_OFFSET + DB_NAME_OFFSET));
chat_msg_db.db_name_len =
*(DWORD *)(p_contact_addr + DB_CHAT_MSG_OFFSET + DB_NAME_OFFSET + 0x4);
chat_msg_db.handle = chat_msg_db_addr;
ExecuteSQL(chat_msg_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &chat_msg_db);
dbs_.push_back(chat_msg_db);
wstring chat_msg_name = wstring((wchar_t *)(*(
DWORD *)(p_contact_addr + DB_CHAT_MSG_OFFSET + DB_NAME_OFFSET)));
dbmap_[chat_msg_name] = chat_msg_db;
// misc.db
DatabaseInfo misc_db{0};
misc_db.db_name =
(wchar_t *)(*(DWORD *)(p_contact_addr + DB_MISC_OFFSET + DB_NAME_OFFSET));
misc_db.db_name_len =
*(DWORD *)(p_contact_addr + DB_MISC_OFFSET + DB_NAME_OFFSET + 0x4);
misc_db.handle = misc_db_addr;
ExecuteSQL(misc_db_addr, "select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &misc_db);
dbs_.push_back(misc_db);
wstring misc_name = wstring((
wchar_t *)(*(DWORD *)(p_contact_addr + DB_MISC_OFFSET + DB_NAME_OFFSET)));
dbmap_[misc_name] = misc_db;
// emotion.db
DatabaseInfo emotion_db{0};
emotion_db.db_name = (wchar_t *)(*(
DWORD *)(p_contact_addr + DB_EMOTION_OFFSET + DB_NAME_OFFSET));
emotion_db.db_name_len =
*(DWORD *)(p_contact_addr + DB_EMOTION_OFFSET + DB_NAME_OFFSET + 0x4);
emotion_db.handle = emotion_db_addr;
ExecuteSQL(emotion_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &emotion_db);
dbs_.push_back(emotion_db);
wstring emotion_name = wstring((wchar_t *)(*(
DWORD *)(p_contact_addr + DB_EMOTION_OFFSET + DB_NAME_OFFSET)));
dbmap_[emotion_name] = emotion_db;
// media.db
DatabaseInfo media_db{0};
media_db.db_name = (wchar_t *)(*(DWORD *)(p_contact_addr + DB_MEDIA_OFFSET +
DB_NAME_OFFSET));
media_db.db_name_len =
*(DWORD *)(p_contact_addr + DB_MEDIA_OFFSET + DB_NAME_OFFSET + 0x4);
media_db.handle = media_db_addr;
ExecuteSQL(media_db_addr, "select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &media_db);
dbs_.push_back(media_db);
wstring media_name = wstring((wchar_t *)(*(
DWORD *)(p_contact_addr + DB_MEDIA_OFFSET + DB_NAME_OFFSET)));
dbmap_[media_name] = media_db;
// functionMsg.db
DatabaseInfo function_msg_db{0};
function_msg_db.db_name = (wchar_t *)(*(
DWORD *)(p_contact_addr + DB_FUNCTION_MSG_OFFSET + DB_NAME_OFFSET));
function_msg_db.db_name_len = *(
DWORD *)(p_contact_addr + DB_FUNCTION_MSG_OFFSET + DB_NAME_OFFSET + 0x4);
function_msg_db.handle = function_msg_db_addr;
ExecuteSQL(function_msg_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &function_msg_db);
dbs_.push_back(function_msg_db);
wstring function_msg_name = wstring((wchar_t *)(*(
DWORD *)(p_contact_addr + DB_FUNCTION_MSG_OFFSET + DB_NAME_OFFSET)));
dbmap_[function_msg_name] = function_msg_db;
if (bizchat_msg_db_addr) {
// functionMsg.db maybe null
DatabaseInfo bizchat_msg_db{0};
bizchat_msg_db.db_name = (wchar_t *)(*(
DWORD *)(p_contact_addr + DB_FUNCTION_MSG_OFFSET + DB_NAME_OFFSET));
bizchat_msg_db.db_name_len =
*(DWORD *)(p_contact_addr + DB_FUNCTION_MSG_OFFSET + DB_NAME_OFFSET +
0x4);
bizchat_msg_db.handle = bizchat_msg_db_addr;
ExecuteSQL(bizchat_msg_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &bizchat_msg_db);
dbs_.push_back(bizchat_msg_db);
wstring bizchat_msg_name = wstring((wchar_t *)(*(
DWORD *)(p_contact_addr + DB_FUNCTION_MSG_OFFSET + DB_NAME_OFFSET)));
dbmap_[bizchat_msg_name] = bizchat_msg_db;
}
// Storage
DWORD storage_start = *(DWORD *)(p_contact_addr + STORAGE_START_OFFSET);
DWORD storage_end = *(DWORD *)(p_contact_addr + STORAGE_END_OFFSET);
// do {
// DWORD vtable_ptr = *(DWORD *)(storage_start);
// if(vtable_ptr == base + OP_LOG_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + CHAT_MSG_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + CHAT_CR_MSG_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + SESSION_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + APP_INFO_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + HEAD_IMG_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + HEAD_IMG_URL_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + BIZ_INFO_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + TICKET_INFO_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + CHAT_ROOM_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + CHAT_ROOM_INFO_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + MEDIA_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + NAME_2_ID_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + EMOTION_PACKAGE_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + EMOTION_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + BUFINFO_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + CUSTOM_EMOTION_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + DEL_SESSIONINFO_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + FUNCTION_MSG_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + FUNCTION_MSG_TASK_STORAGE_VFTABLE){
// }else if(vtable_ptr == base + REVOKE_MSG_STORAGE_VFTABLE){
// }
// storage_start = storage_start + 0x4;
// } while (storage_start != storage_end);
DWORD multi_db_mgr_addr = base_addr_ + MULTI_DB_MSG_MGR_OFFSET;
DWORD public_msg_mgr_addr = base_addr_ + PUBLIC_MSG_MGR_OFFSET;
DWORD favorite_storage_mgr_addr = base_addr_ + FAVORITE_STORAGE_MGR_OFFSET;
DWORD fts_favorite_mgr_addr = base_addr_ + FTS_FAVORITE_MGR_OFFSET;
// MsgX.db
DWORD wrap_ptr = *(DWORD *)(multi_db_mgr_addr);
DWORD db_num = *(DWORD *)(wrap_ptr + 0x30);
DWORD current_db_num = *(DWORD *)(wrap_ptr + 0x38);
DWORD begin_ptr = *(DWORD *)(wrap_ptr + 0x2c);
for (unsigned int i = 0; i < current_db_num; i++) {
DWORD next_addr = begin_ptr + i * 0x4;
DWORD db_addr = *(DWORD *)next_addr;
if (db_addr) {
DWORD msg0_db_addr = *(DWORD *)(db_addr + 0x60);
DatabaseInfo msg0_db{0};
msg0_db.db_name = (wchar_t *)(*(DWORD *)(db_addr));
msg0_db.db_name_len = *(DWORD *)(db_addr + 0x4);
msg0_db.handle = msg0_db_addr;
msg0_db.extrainfo = *(DWORD *)(*(DWORD *)(db_addr + 0x18) + 0x144);
ExecuteSQL(msg0_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &msg0_db);
dbs_.push_back(msg0_db);
wstring msg_db_name = wstring((wchar_t *)(*(DWORD *)(db_addr)));
dbmap_[msg_db_name] = msg0_db;
// BufInfoStorage
DWORD buf_info_addr = *(DWORD *)(db_addr + 0x14);
DWORD buf_info_handle = *(DWORD *)(buf_info_addr + 0x38);
DatabaseInfo media_msg0_db{0};
media_msg0_db.db_name = (wchar_t *)(*(DWORD *)(buf_info_addr + 0x4C));
media_msg0_db.db_name_len = *(DWORD *)(buf_info_addr + 0x50);
media_msg0_db.handle = buf_info_handle;
ExecuteSQL(buf_info_handle,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &media_msg0_db);
dbs_.push_back(media_msg0_db);
wstring media_msg_db_name =
wstring((wchar_t *)(*(DWORD *)(buf_info_addr + 0x4C)));
dbmap_[media_msg_db_name] = media_msg0_db;
}
}
// publicMsgMedia.db
DWORD public_msg_media_ptr = *(DWORD *)(*(DWORD *)(public_msg_mgr_addr) + 0x8);
if (public_msg_media_ptr) {
DWORD public_msg_media_db_addr = *(DWORD *)(public_msg_media_ptr + 0x38);
DatabaseInfo public_msg_media_db{0};
public_msg_media_db.db_name = (wchar_t *)(*(DWORD *)(public_msg_media_ptr + 0x4C));
public_msg_media_db.db_name_len = *(DWORD *)(public_msg_media_ptr + 0x50);
public_msg_media_db.handle = public_msg_media_db_addr;
ExecuteSQL(public_msg_media_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &public_msg_media_db);
dbs_.push_back(public_msg_media_db);
wstring public_msg_media_db_name =
wstring((wchar_t *)(*(DWORD *)(public_msg_media_ptr + 0x4C)));
dbmap_[public_msg_media_db_name] = public_msg_media_db;
}
// publicMsg.db
DWORD public_msg_ptr = *(DWORD *)(*(DWORD *)(public_msg_mgr_addr) + 0xc);
if (public_msg_ptr) {
DWORD public_msg_db_addr = *(DWORD *)(public_msg_ptr + 0x38);
DatabaseInfo public_msg_db{0};
public_msg_db.db_name = (wchar_t *)(*(DWORD *)(public_msg_ptr + 0x4C));
public_msg_db.db_name_len = *(DWORD *)(public_msg_ptr + 0x50);
public_msg_db.handle = public_msg_db_addr;
ExecuteSQL(public_msg_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &public_msg_db);
dbs_.push_back(public_msg_db);
wstring public_msg_db_name =
wstring((wchar_t *)(*(DWORD *)(public_msg_ptr + 0x4C)));
dbmap_[public_msg_db_name] = public_msg_db;
}
// Favorite.db
DWORD favItems_ptr =
*(DWORD *)(*(DWORD *)(*(DWORD *)(favorite_storage_mgr_addr) + 0x8) + 0x4);
if (favItems_ptr) {
DWORD favorite_db_addr = *(DWORD *)(favItems_ptr + 0x38);
DatabaseInfo favorite_db{0};
favorite_db.db_name = (wchar_t *)(*(DWORD *)(favItems_ptr + 0x4C));
favorite_db.db_name_len = *(DWORD *)(favItems_ptr + 0x50);
favorite_db.handle = favorite_db_addr;
ExecuteSQL(favorite_db_addr,
"select * from sqlite_master where type=\"table\";",
(DWORD)GetDbInfo, &favorite_db);
dbs_.push_back(favorite_db);
wstring public_msg_db_name =
wstring((wchar_t *)(*(DWORD *)(favItems_ptr + 0x4C)));
dbmap_[public_msg_db_name] = favorite_db;
}
DatabaseInfo db_end = {0};
dbs_.push_back(db_end);
#ifdef _DEBUG
for (unsigned int i = 0; i < dbs_.size() - 1; i++) {
// LOG(INFO) << "dbname =" << dbs_[i].db_name;
// LOG(INFO) << "handle =" << dbs_[i].handle;
// LOG(INFO) << "table_count =" << dbs_[i].tables.size();
}
#endif
vector<void *> ret_array;
for (unsigned int i = 0; i < dbs_.size() - 1; i++)
ret_array.push_back(&dbs_[i]);
return ret_array;
}
DWORD DB::GetDbHandleByDbName(wchar_t *dbname) {
if (dbmap_.size() == 0) {
GetDbHandles();
}
if (dbmap_.find(dbname) != dbmap_.end()) {
return dbmap_[dbname].handle;
}
return 0;
}
unsigned int DB::GetLocalIdByMsgId(ULONG64 msgid, int &dbIndex) {
char sql[260] = {0};
sprintf_s(sql, "select localId from MSG where MsgSvrID=%llu;", msgid);
wchar_t dbname[20] = {0};
for (int i = 0;; i++) {
swprintf_s(dbname, L"MSG%d.db", i);
DWORD handle = GetDbHandleByDbName(dbname);
if (handle == 0) {
SPDLOG_INFO("MSG db handle is null");
return 0;
}
vector<vector<string>> result;
int ret = Select(handle, (const char *)sql, result);
if (result.size() == 0) continue;
dbIndex = dbmap_[dbname].extrainfo;
return stoi(result[1][0]);
}
return 0;
}
vector<string> DB::GetChatMsgByMsgId(ULONG64 msgid) {
char sql[260] = {0};
sprintf_s(sql,
"select "
"localId,TalkerId,MsgSvrID,Type,SubType,IsSender,CreateTime,"
"Sequence,StatusEx,FlagEx,Status,MsgServerSeq,MsgSequence,"
"StrTalker,StrContent,BytesExtra from MSG where MsgSvrID=%llu;",
msgid);
wchar_t dbname[20] = {0};
for (int i = 0;; i++) {
swprintf_s(dbname, L"MSG%d.db", i);
DWORD handle = GetDbHandleByDbName(dbname);
if (handle == 0) {
// LOG(INFO) << "MSG db handle is null";
return {};
}
vector<vector<string>> result;
int ret = Select(handle, (const char *)sql, result);
if (result.size() == 0) continue;
return result[1];
}
return {};
}
std::string DB::GetVoiceBuffByMsgId(ULONG64 msgid) {
char sql[260] = {0};
sprintf_s(sql, "SELECT Buf from Media WHERE Reserved0=%llu;", msgid);
wchar_t dbname[20] = {0};
for (int i = 0;; i++) {
swprintf_s(dbname, L"MediaMSG%d.db", i);
DWORD handle = GetDbHandleByDbName(dbname);
if (handle == 0) {
// LOG(INFO) << "Media db handle is null";
return "";
}
vector<vector<string>> result;
int ret = Select(handle, (const char *)sql, result);
if (result.size() == 0) continue;
return result[1][0];
}
return "";
}
std::string DB::GetPublicMsgCompressContentByMsgId(ULONG64 msgid) {
char sql[260] = {0};
sprintf_s(sql, "SELECT CompressContent from PublicMsg WHERE MsgSvrID=%llu;", msgid);
wchar_t dbname[20] = {0};
swprintf_s( dbname, 20, L"%s", L"PublicMsg.db");
DWORD handle = GetDbHandleByDbName(dbname);
if (handle == 0) {
return "";
}
vector<vector<string>> result;
int ret = Select(handle, (const char *)sql, result);
if (result.size() == 0) {
return "";
}
return result[1][0];
}
} // namespace wxhelper