mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-18 05:58:30 +00:00
294 lines
7.2 KiB
C++
294 lines
7.2 KiB
C++
#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <magisk.h>
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#include <db.h>
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#include <daemon.h>
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#include <utils.h>
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#define DB_VERSION 10
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using namespace std;
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static sqlite3 *mDB = nullptr;
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int db_strings::getKeyIdx(string_view key) const {
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int idx = DB_STRING_NUM;
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for (int i = 0; i < DB_STRING_NUM; ++i) {
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if (key == DB_STRING_KEYS[i])
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idx = i;
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}
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return idx;
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}
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db_settings::db_settings() {
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// Default settings
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data[ROOT_ACCESS] = ROOT_ACCESS_APPS_AND_ADB;
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data[SU_MULTIUSER_MODE] = MULTIUSER_MODE_OWNER_ONLY;
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data[SU_MNT_NS] = NAMESPACE_MODE_REQUESTER;
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data[HIDE_CONFIG] = true;
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}
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int db_settings::getKeyIdx(string_view key) const {
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int idx = DB_SETTINGS_NUM;
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for (int i = 0; i < DB_SETTINGS_NUM; ++i) {
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if (key == DB_SETTING_KEYS[i])
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idx = i;
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}
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return idx;
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}
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static int ver_cb(void *ver, int, char **data, char **) {
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*((int *) ver) = parse_int(data[0]);
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return 0;
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}
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#define err_ret(e) if (e) return e;
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static char *open_and_init_db(sqlite3 *&db) {
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int ret = sqlite3_open_v2(MAGISKDB, &db,
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SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_FULLMUTEX, nullptr);
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if (ret)
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return strdup(sqlite3_errmsg(db));
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int ver;
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bool upgrade = false;
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char *err;
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sqlite3_exec(db, "PRAGMA user_version", ver_cb, &ver, &err);
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err_ret(err);
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if (ver > DB_VERSION) {
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// Don't support downgrading database
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sqlite3_close(db);
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return nullptr;
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}
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if (ver < 3) {
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// Policies
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sqlite3_exec(db,
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"CREATE TABLE IF NOT EXISTS policies "
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"(uid INT, package_name TEXT, policy INT, until INT, "
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"logging INT, notification INT, PRIMARY KEY(uid))",
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nullptr, nullptr, &err);
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err_ret(err);
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// Settings
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sqlite3_exec(db,
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"CREATE TABLE IF NOT EXISTS settings "
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"(key TEXT, value INT, PRIMARY KEY(key))",
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nullptr, nullptr, &err);
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err_ret(err);
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ver = 3;
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upgrade = true;
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}
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if (ver < 4) {
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// Strings
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sqlite3_exec(db,
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"CREATE TABLE IF NOT EXISTS strings "
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"(key TEXT, value TEXT, PRIMARY KEY(key))",
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nullptr, nullptr, &err);
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err_ret(err);
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ver = 4;
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upgrade = true;
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}
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if (ver < 5) {
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sqlite3_exec(db, "UPDATE policies SET uid=uid%100000", nullptr, nullptr, &err);
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err_ret(err);
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/* Directly jump to version 6 */
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ver = 6;
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upgrade = true;
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}
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if (ver < 7) {
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sqlite3_exec(db,
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"CREATE TABLE IF NOT EXISTS hidelist "
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"(package_name TEXT, process TEXT, PRIMARY KEY(package_name, process));",
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nullptr, nullptr, &err);
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err_ret(err);
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/* Directly jump to version 9 */
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ver = 9;
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upgrade = true;
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}
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if (ver < 8) {
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sqlite3_exec(db,
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"BEGIN TRANSACTION;"
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"ALTER TABLE hidelist RENAME TO hidelist_tmp;"
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"CREATE TABLE IF NOT EXISTS hidelist "
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"(package_name TEXT, process TEXT, PRIMARY KEY(package_name, process));"
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"INSERT INTO hidelist SELECT process as package_name, process FROM hidelist_tmp;"
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"DROP TABLE hidelist_tmp;"
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"COMMIT;",
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nullptr, nullptr, &err);
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err_ret(err);
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/* Directly jump to version 9 */
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ver = 9;
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upgrade = true;
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}
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if (ver < 9) {
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sqlite3_exec(db,
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"BEGIN TRANSACTION;"
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"ALTER TABLE hidelist RENAME TO hidelist_tmp;"
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"CREATE TABLE IF NOT EXISTS hidelist "
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"(package_name TEXT, process TEXT, PRIMARY KEY(package_name, process));"
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"INSERT INTO hidelist SELECT * FROM hidelist_tmp;"
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"DROP TABLE hidelist_tmp;"
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"COMMIT;",
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nullptr, nullptr, &err);
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err_ret(err);
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ver = 9;
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upgrade = true;
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}
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if (ver < 10) {
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sqlite3_exec(db, "DROP TABLE logs", nullptr, nullptr, &err);
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err_ret(err);
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ver = 10;
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upgrade = true;
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}
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if (upgrade) {
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// Set version
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char query[32];
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sprintf(query, "PRAGMA user_version=%d", ver);
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sqlite3_exec(db, query, nullptr, nullptr, &err);
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err_ret(err);
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}
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return nullptr;
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}
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char *db_exec(const char *sql) {
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char *err;
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if (mDB == nullptr) {
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err = open_and_init_db(mDB);
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db_err_cmd(err,
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// Open fails, remove and reconstruct
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unlink(MAGISKDB);
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err = open_and_init_db(mDB);
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err_ret(err);
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);
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}
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if (mDB) {
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sqlite3_exec(mDB, sql, nullptr, nullptr, &err);
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return err;
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}
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return nullptr;
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}
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char *db_exec(const char *sql, const db_row_cb &fn) {
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char *err;
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if (mDB == nullptr) {
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err = open_and_init_db(mDB);
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db_err_cmd(err,
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// Open fails, remove and reconstruct
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unlink(MAGISKDB);
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err = open_and_init_db(mDB);
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err_ret(err);
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);
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}
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if (mDB) {
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sqlite3_exec(mDB, sql, [](void *cb, int col_num, char **data, char **col_name) -> int {
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auto &func = *reinterpret_cast<const db_row_cb*>(cb);
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db_row row;
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for (int i = 0; i < col_num; ++i)
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row[col_name[i]] = data[i];
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return func(row) ? 0 : 1;
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}, (void *) &fn, &err);
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return err;
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}
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return nullptr;
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}
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int get_db_settings(db_settings &cfg, int key) {
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char *err;
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auto settings_cb = [&](db_row &row) -> bool {
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cfg[row["key"]] = parse_int(row["value"]);
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LOGD("magiskdb: query %s=[%s]\n", row["key"].data(), row["value"].data());
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return true;
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};
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if (key >= 0) {
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char query[128];
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sprintf(query, "SELECT key, value FROM settings WHERE key='%s'", DB_SETTING_KEYS[key]);
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err = db_exec(query, settings_cb);
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} else {
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err = db_exec("SELECT key, value FROM settings", settings_cb);
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}
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db_err_cmd(err, return 1);
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return 0;
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}
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int get_db_strings(db_strings &str, int key) {
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char *err;
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auto string_cb = [&](db_row &row) -> bool {
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str[row["key"]] = row["value"];
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return true;
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};
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if (key >= 0) {
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char query[128];
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sprintf(query, "SELECT key, value FROM strings WHERE key='%s'", DB_STRING_KEYS[key]);
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err = db_exec(query, string_cb);
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} else {
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err = db_exec("SELECT key, value FROM strings", string_cb);
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}
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db_err_cmd(err, return 1);
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return 0;
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}
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int get_uid_policy(su_access &su, int uid) {
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char query[256], *err;
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sprintf(query, "SELECT policy, logging, notification FROM policies "
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"WHERE uid=%d AND (until=0 OR until>%li)", uid, time(nullptr));
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err = db_exec(query, [&](db_row &row) -> bool {
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su.policy = (policy_t) parse_int(row["policy"]);
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su.log = parse_int(row["logging"]);
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su.notify = parse_int(row["notification"]);
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LOGD("magiskdb: query policy=[%d] log=[%d] notify=[%d]\n", su.policy, su.log, su.notify);
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return true;
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});
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db_err_cmd(err, return 1);
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return 0;
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}
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int validate_manager(string &alt_pkg, int userid, struct stat *st) {
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struct stat tmp_st;
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if (st == nullptr)
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st = &tmp_st;
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// Prefer DE storage
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char app_path[128];
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sprintf(app_path, "%s/%d/%s", APP_DATA_DIR, userid, alt_pkg.empty() ? "xxx" : alt_pkg.data());
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if (stat(app_path, st)) {
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// Check the official package name
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sprintf(app_path, "%s/%d/" JAVA_PACKAGE_NAME, APP_DATA_DIR, userid);
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if (stat(app_path, st)) {
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LOGE("su: cannot find manager");
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memset(st, 0, sizeof(*st));
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alt_pkg.clear();
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return 1;
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} else {
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// Switch to official package if exists
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alt_pkg = JAVA_PACKAGE_NAME;
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}
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}
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return 0;
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}
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void exec_sql(int client) {
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run_finally f([=]{ close(client); });
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char *sql = read_string(client);
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char *err = db_exec(sql, [&](db_row &row) -> bool {
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string out;
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bool first = true;
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for (auto it : row) {
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if (first) first = false;
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else out += '|';
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out += it.first;
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out += '=';
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out += it.second;
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}
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write_int(client, out.length());
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xwrite(client, out.data(), out.length());
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return true;
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});
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free(sql);
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write_int(client, 0);
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db_err_cmd(err, return; );
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}
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