mirror of
https://github.com/CTCaer/CTCaer-TWRP.git
synced 2024-11-23 18:29:52 +00:00
560 lines
15 KiB
C++
560 lines
15 KiB
C++
/*
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Copyright 2012 bigbiff/Dees_Troy TeamWin
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This file is part of TWRP/TeamWin Recovery Project.
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TWRP is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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TWRP is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with TWRP. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <string>
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#include <vector>
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#include <string.h>
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#include <libgen.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include "gui/rapidxml.hpp"
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#include "fixPermissions.hpp"
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#include "twrp-functions.hpp"
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#include "common.h"
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using namespace std;
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using namespace rapidxml;
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int fixPermissions::fixPerms(bool enable_debug, bool remove_data_for_missing_apps) {
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packageFile = "/data/system/packages.xml";
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debug = enable_debug;
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remove_data = remove_data_for_missing_apps;
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multi_user = TWFunc::Path_Exists("/data/user");
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if (!(TWFunc::Path_Exists(packageFile))) {
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ui_print("Can't check permissions\n");
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ui_print("after Factory Reset.\n");
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ui_print("Please boot rom and try\n");
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ui_print("again after you reboot into\n");
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ui_print("recovery.\n");
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return -1;
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}
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ui_print("Fixing permissions...\nLoading packages...\n");
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if ((getPackages()) != 0) {
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return -1;
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}
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ui_print("Fixing /system/app permissions...\n");
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if ((fixSystemApps()) != 0) {
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return -1;
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}
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ui_print("Fixing /data/app permisions...\n");
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if ((fixDataApps()) != 0) {
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return -1;
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}
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if (multi_user) {
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DIR *d = opendir("/data/user");
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string new_path, user_id;
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if (d == NULL) {
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LOGE("Error opening '/data/user'\n");
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return -1;
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}
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if (d) {
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struct dirent *p;
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while ((p = readdir(d))) {
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if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, ".."))
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continue;
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new_path = "/data/user/";
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new_path.append(p->d_name);
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user_id = "u";
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user_id += p->d_name;
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user_id += "_";
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if (p->d_type == DT_LNK) {
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char link[512], realPath[512];
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strcpy(link, new_path.c_str());
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memset(realPath, 0, sizeof(realPath));
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while (readlink(link, realPath, sizeof(realPath)) > 0) {
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strcpy(link, realPath);
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memset(realPath, 0, sizeof(realPath));
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}
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new_path = link;
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} else if (p->d_type != DT_DIR) {
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continue;
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} else {
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new_path.append("/");
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// We're probably going to need to fix permissions on multi user but
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// it will have to wait for another time. Need to figure out where
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// the uid and gid is stored for other users.
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continue;
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}
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ui_print("Fixing %s permissions...\n", new_path.c_str());
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if ((fixDataData(new_path)) != 0) {
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closedir(d);
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return -1;
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}
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}
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closedir(d);
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}
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} else {
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ui_print("Fixing /data/data permisions...\n");
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if ((fixDataData("/data/data/")) != 0) {
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return -1;
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}
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}
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ui_print("Done fixing permissions.\n");
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return 0;
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}
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int fixPermissions::pchown(string fn, int puid, int pgid) {
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LOGI("Fixing %s, uid: %d, gid: %d\n", fn.c_str(), puid, pgid);
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if (chown(fn.c_str(), puid, pgid) != 0) {
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LOGE("Unable to chown '%s' %i %i\n", fn.c_str(), puid, pgid);
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return -1;
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}
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return 0;
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}
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int fixPermissions::pchmod(string fn, string mode) {
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long mask = 0;
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LOGI("Fixing %s, mode: %s\n", fn.c_str(), mode.c_str());
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for ( std::string::size_type n = 0; n < mode.length(); ++n) {
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if (n == 0) {
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if (mode[n] == '0')
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continue;
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else if (mode[n] == '1')
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mask = S_ISVTX;
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else if (mode[n] == '2')
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mask = S_ISGID;
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}
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else if (n == 1) {
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if (mode[n] == '7') {
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mask |= S_IRWXU;
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}
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if (mode[n] == '6') {
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mask |= S_IRUSR;
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mask |= S_IWUSR;
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}
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if (mode[n] == '5') {
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mask |= S_IRUSR;
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mask |= S_IXUSR;
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}
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if (mode[n] == '4')
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mask |= S_IRUSR;
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if (mode[n] == '3') {
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mask |= S_IWUSR;
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mask |= S_IRUSR;
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}
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if (mode[n] == '2')
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mask |= S_IWUSR;
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if (mode[n] == '1')
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mask |= S_IXUSR;
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}
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else if (n == 2) {
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if (mode[n] == '7') {
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mask |= S_IRWXG;
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}
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if (mode[n] == '6') {
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mask |= S_IRGRP;
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mask |= S_IWGRP;
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}
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if (mode[n] == '5') {
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mask |= S_IRGRP;
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mask |= S_IXGRP;
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}
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if (mode[n] == '4')
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mask |= S_IRGRP;
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if (mode[n] == '3') {
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mask |= S_IWGRP;
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mask |= S_IXGRP;
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}
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if (mode[n] == '2')
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mask |= S_IWGRP;
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if (mode[n] == '1')
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mask |= S_IXGRP;
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}
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else if (n == 3) {
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if (mode[n] == '7') {
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mask |= S_IRWXO;
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}
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if (mode[n] == '6') {
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mask |= S_IROTH;
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mask |= S_IWOTH;
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}
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if (mode[n] == '5') {
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mask |= S_IROTH;
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mask |= S_IXOTH;
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}
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if (mode[n] == '4')
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mask |= S_IROTH;
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if (mode[n] == '3') {
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mask |= S_IWOTH;
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mask |= S_IXOTH;
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}
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if (mode[n] == '2')
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mask |= S_IWOTH;
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if (mode[n] == '1')
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mask |= S_IXOTH;
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}
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}
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if (chmod(fn.c_str(), mask) != 0) {
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LOGE("Unable to chmod '%s' %l\n", fn.c_str(), mask);
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return -1;
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}
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return 0;
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}
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int fixPermissions::fixSystemApps() {
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temp = head;
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while (temp != NULL) {
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if (TWFunc::Path_Exists(temp->codePath)) {
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if (temp->appDir.compare("/system/app") == 0) {
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if (debug) {
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LOGI("Looking at '%s'\n", temp->codePath.c_str());
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LOGI("Fixing permissions on '%s'\n", temp->pkgName.c_str());
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LOGI("Directory: '%s'\n", temp->appDir.c_str());
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LOGI("Original package owner: %d, group: %d\n", temp->uid, temp->gid);
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}
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if (pchown(temp->codePath, 0, 0) != 0)
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return -1;
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if (pchmod(temp->codePath, "0644") != 0)
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return -1;
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}
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} else {
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//Remove data directory since app isn't installed
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if (remove_data && TWFunc::Path_Exists(temp->dDir) && temp->appDir.size() >= 9 && temp->appDir.substr(0, 9) != "/mnt/asec") {
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if (debug)
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LOGI("Looking at '%s', removing data dir: '%s', appDir: '%s'", temp->codePath.c_str(), temp->dDir.c_str(), temp->appDir.c_str());
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if (TWFunc::removeDir(temp->dDir, false) != 0) {
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LOGI("Unable to removeDir '%s'\n", temp->dDir.c_str());
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return -1;
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}
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}
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}
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temp = temp->next;
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}
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return 0;
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}
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int fixPermissions::fixDataApps() {
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bool fix = false;
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int new_gid = 0;
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string perms = "0000";
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temp = head;
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while (temp != NULL) {
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if (TWFunc::Path_Exists(temp->codePath)) {
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if (temp->appDir.compare("/data/app") == 0 || temp->appDir.compare("/sd-ext/app") == 0) {
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fix = true;
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new_gid = 1000;
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perms = "0644";
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} else if (temp->appDir.compare("/data/app-private") == 0 || temp->appDir.compare("/sd-ext/app-private") == 0) {
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fix = true;
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new_gid = temp->gid;
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perms = "0640";
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} else
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fix = false;
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if (fix) {
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if (debug) {
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LOGI("Looking at '%s'\n", temp->codePath.c_str());
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LOGI("Fixing permissions on '%s'\n", temp->pkgName.c_str());
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LOGI("Directory: '%s'\n", temp->appDir.c_str());
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LOGI("Original package owner: %d, group: %d\n", temp->uid, temp->gid);
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}
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if (pchown(temp->codePath, 1000, new_gid) != 0)
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return -1;
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if (pchmod(temp->codePath, perms) != 0)
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return -1;
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}
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} else {
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//Remove data directory since app isn't installed
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if (remove_data && TWFunc::Path_Exists(temp->dDir) && temp->appDir.size() >= 9 && temp->appDir.substr(0, 9) != "/mnt/asec") {
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if (debug)
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LOGI("Looking at '%s', removing data dir: '%s', appDir: '%s'", temp->codePath.c_str(), temp->dDir.c_str(), temp->appDir.c_str());
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if (TWFunc::removeDir(temp->dDir, false) != 0) {
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LOGI("Unable to removeDir '%s'\n", temp->dDir.c_str());
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return -1;
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}
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}
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}
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temp = temp->next;
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}
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return 0;
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}
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int fixPermissions::fixAllFiles(string directory, int gid, int uid, string file_perms) {
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vector <string> files;
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string file;
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files = listAllFiles(directory);
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for (unsigned i = 0; i < files.size(); ++i) {
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file = directory + "/";
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file.append(files.at(i));
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if (debug)
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LOGI("Looking at file '%s'\n", file.c_str());
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if (pchmod(file, file_perms) != 0)
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return -1;
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if (pchown(file, uid, gid) != 0)
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return -1;
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}
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return 0;
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}
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int fixPermissions::fixDataData(string dataDir) {
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string directory, dir;
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temp = head;
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while (temp != NULL) {
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dir = dataDir + temp->dDir;
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if (TWFunc::Path_Exists(dir)) {
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vector <string> dataDataDirs = listAllDirectories(dir);
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for (unsigned n = 0; n < dataDataDirs.size(); ++n) {
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directory = dir + "/";
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directory.append(dataDataDirs.at(n));
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if (debug)
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LOGI("Looking at data directory: '%s'\n", directory.c_str());
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if (dataDataDirs.at(n) == ".") {
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if (pchmod(directory, "0755") != 0)
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return -1;
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if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
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return -1;
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if (fixAllFiles(directory, temp->uid, temp->gid, "0755") != 0)
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return -1;
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}
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else if (dataDataDirs.at(n) == "..") {
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if (debug)
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LOGI("Skipping ..\n");
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continue;
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}
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else if (dataDataDirs.at(n) == "lib") {
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if (pchmod(directory.c_str(), "0755") != 0)
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return -1;
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if (pchown(directory.c_str(), 1000, 1000) != 0)
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return -1;
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if (fixAllFiles(directory, temp->uid, temp->gid, "0755") != 0)
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return -1;
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}
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else if (dataDataDirs.at(n) == "shared_prefs") {
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if (pchmod(directory.c_str(), "0771") != 0)
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return -1;
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if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
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return -1;
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if (fixAllFiles(directory, temp->uid, temp->gid, "0660") != 0)
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return -1;
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}
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else if (dataDataDirs.at(n) == "databases") {
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if (pchmod(directory.c_str(), "0771") != 0)
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return -1;
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if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
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return -1;
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if (fixAllFiles(directory, temp->uid, temp->gid, "0660") != 0)
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return -1;
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}
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else if (dataDataDirs.at(n) == "cache") {
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if (pchmod(directory.c_str(), "0771") != 0)
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return -1;
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if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
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return -1;
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if (fixAllFiles(directory, temp->uid, temp->gid, "0600") != 0)
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return -1;
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}
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else {
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if (pchmod(directory.c_str(), "0771") != 0)
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return -1;
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if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
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return -1;
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if (fixAllFiles(directory, temp->uid, temp->gid, "0755") != 0)
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return -1;
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}
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}
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}
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temp = temp->next;
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}
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return 0;
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}
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vector <string> fixPermissions::listAllDirectories(string path) {
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DIR *dir = opendir(path.c_str());
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vector <string> dirs;
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if (dir == NULL) {
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LOGE("Error opening '%s'\n", path.c_str());
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return dirs;
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}
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struct dirent *entry = readdir(dir);
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while (entry != NULL) {
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if (entry->d_type == DT_DIR)
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dirs.push_back(entry->d_name);
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entry = readdir(dir);
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}
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closedir(dir);
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return dirs;
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}
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vector <string> fixPermissions::listAllFiles(string path) {
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DIR *dir = opendir(path.c_str());
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vector <string> files;
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if (dir == NULL) {
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LOGE("Error opening '%s'\n", path.c_str());
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return files;
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}
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struct dirent *entry = readdir(dir);
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while (entry != NULL) {
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if (entry->d_type == DT_REG)
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files.push_back(entry->d_name);
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entry = readdir(dir);
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}
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closedir(dir);
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return files;
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}
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int fixPermissions::getPackages() {
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int len = 0;
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bool skiploop = false;
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vector <string> skip;
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string name;
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head = NULL;
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skip.push_back("/system/framework/framework-res.apk");
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skip.push_back("/system/framework/com.htc.resources.apk");
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ifstream xmlFile(packageFile.c_str());
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xmlFile.seekg(0, ios::end);
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len = (int) xmlFile.tellg();
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xmlFile.seekg(0, ios::beg);
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char xmlBuf[len + 1];
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xmlFile.read(&xmlBuf[0], len);
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xmlBuf[len] = '\0';
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xml_document<> pkgDoc;
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pkgDoc.parse<parse_full>(&xmlBuf[0]);
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xml_node<> * pkgNode = pkgDoc.first_node("packages");
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xml_node <> * next = pkgNode->first_node("package");
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if (next == NULL) {
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LOGE("No packages found to fix.\n");
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return -1;
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}
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//Get packages
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while (next->first_attribute("name") != NULL) {
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package* temp = new package;
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for (unsigned n = 0; n < skip.size(); ++n) {
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if (skip.at(n).compare(next->first_attribute("codePath")->value()) == 0) {
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skiploop = true;
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break;
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}
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}
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if (skiploop == true) {
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if (debug)
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LOGI("Skipping package %s\n", next->first_attribute("codePath")->value());
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free(temp);
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next = next->next_sibling();
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skiploop = false;
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continue;
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}
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name.append((next->first_attribute("name")->value()));
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temp->pkgName = next->first_attribute("name")->value();
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if (debug)
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LOGI("Loading pkg: %s\n", next->first_attribute("name")->value());
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if (next->first_attribute("codePath") == NULL) {
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LOGI("Problem with codePath on %s\n", next->first_attribute("name")->value());
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} else {
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temp->codePath = next->first_attribute("codePath")->value();
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temp->app = basename(next->first_attribute("codePath")->value());
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temp->appDir = dirname(next->first_attribute("codePath")->value());
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}
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temp->dDir = name;
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if ( next->first_attribute("sharedUserId") != NULL) {
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temp->uid = atoi(next->first_attribute("sharedUserId")->value());
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temp->gid = atoi(next->first_attribute("sharedUserId")->value());
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}
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else {
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if (next->first_attribute("userId") == NULL) {
|
|
LOGI("Problem with userID on %s\n", next->first_attribute("name")->value());
|
|
} else {
|
|
temp->uid = atoi(next->first_attribute("userId")->value());
|
|
temp->gid = atoi(next->first_attribute("userId")->value());
|
|
}
|
|
}
|
|
temp->next = head;
|
|
head = temp;
|
|
if (next->next_sibling("package") == NULL)
|
|
break;
|
|
name.clear();
|
|
next = next->next_sibling("package");
|
|
}
|
|
//Get updated packages
|
|
next = pkgNode->first_node("updated-package");
|
|
if (next != NULL) {
|
|
while (next->first_attribute("name") != NULL) {
|
|
package* temp = new package;
|
|
for (unsigned n = 0; n < skip.size(); ++n) {
|
|
if (skip.at(n).compare(next->first_attribute("codePath")->value()) == 0) {
|
|
skiploop = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (skiploop == true) {
|
|
if (debug)
|
|
LOGI("Skipping package %s\n", next->first_attribute("codePath")->value());
|
|
free(temp);
|
|
next = next->next_sibling();
|
|
skiploop = false;
|
|
continue;
|
|
}
|
|
name.append((next->first_attribute("name")->value()));
|
|
temp->pkgName = next->first_attribute("name")->value();
|
|
if (debug)
|
|
LOGI("Loading pkg: %s\n", next->first_attribute("name")->value());
|
|
if (next->first_attribute("codePath") == NULL) {
|
|
LOGI("Problem with codePath on %s\n", next->first_attribute("name")->value());
|
|
} else {
|
|
temp->codePath = next->first_attribute("codePath")->value();
|
|
temp->app = basename(next->first_attribute("codePath")->value());
|
|
temp->appDir = dirname(next->first_attribute("codePath")->value());
|
|
}
|
|
|
|
temp->dDir = name;
|
|
if ( next->first_attribute("sharedUserId") != NULL) {
|
|
temp->uid = atoi(next->first_attribute("sharedUserId")->value());
|
|
temp->gid = atoi(next->first_attribute("sharedUserId")->value());
|
|
}
|
|
else {
|
|
if (next->first_attribute("userId") == NULL) {
|
|
LOGI("Problem with userID on %s\n", next->first_attribute("name")->value());
|
|
} else {
|
|
temp->uid = atoi(next->first_attribute("userId")->value());
|
|
temp->gid = atoi(next->first_attribute("userId")->value());
|
|
}
|
|
}
|
|
temp->next = head;
|
|
head = temp;
|
|
if (next->next_sibling("package") == NULL)
|
|
break;
|
|
name.clear();
|
|
next = next->next_sibling("package");
|
|
}
|
|
}
|
|
return 0;
|
|
}
|