1 files changed, 536 insertions, 0 deletions

diff --git a/fixPermissions.cpp b/fixPermissions.cpp
new file mode 100644
index 000000000..d12dc1a5f
--- /dev/null
+++ b/fixPermissions.cpp
@@ -0,0 +1,536 @@
+/*
+	Copyright 2012 bigbiff/Dees_Troy TeamWin
+	This file is part of TWRP/TeamWin Recovery Project.
+
+	TWRP is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	TWRP is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with TWRP.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <string>
+#include <vector>
+#include <string.h>
+#include <libgen.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include "gui/rapidxml.hpp"
+#include "fixPermissions.hpp"
+#include "twrp-functions.hpp"
+#include "common.h"
+
+using namespace std;
+using namespace rapidxml;
+
+int fixPermissions::fixPerms(bool enable_debug, bool remove_data_for_missing_apps) {
+	packageFile = "/data/system/packages.xml";
+	debug = enable_debug;
+	remove_data = remove_data_for_missing_apps;
+
+	if (!(TWFunc::Path_Exists(packageFile))) {
+		ui_print("Can't check permissions\n");
+		ui_print("after Factory Reset.\n");
+		ui_print("Please boot rom and try\n");
+		ui_print("again after you reboot into\n");
+		ui_print("recovery.\n");
+		return -1;
+	}
+
+	ui_print("Fixing permissions...\nLoading packages...\n");
+	if ((getPackages()) != 0) {
+		return -1;
+	}
+	
+	ui_print("Fixing /system/app perissions...\n");
+	if ((fixSystemApps()) != 0) {
+		return -1;
+	}
+
+	ui_print("Fixing /data/app permisions...\n");
+	if ((fixDataApps()) != 0) {
+		return -1;
+	}
+
+	ui_print("Fixing /data/data permisions...\n");
+	if ((fixDataData()) != 0) {
+		return -1;
+	}
+	ui_print("Done fixing permissions.\n");
+	return 0;
+}
+
+int fixPermissions::pchown(string fn, int puid, int pgid) {
+	LOGI("Fixing %s, uid: %d, gid: %d\n", fn.c_str(), puid, pgid);
+	if (chown(fn.c_str(), puid, pgid) != 0) {
+		LOGE("Unable to chown '%s' %i %i\n", fn.c_str(), puid, pgid);
+		return -1;
+	}
+	return 0;
+}
+
+int fixPermissions::pchmod(string fn, string mode) {
+	long mask = 0;
+	LOGI("Fixing %s, mode: %s\n", fn.c_str(), mode.c_str());
+	for ( std::string::size_type n = 0; n < mode.length(); ++n) {
+		if (n == 0) {
+			if (mode[n] == '0')
+				continue;
+			else if (mode[n] == '1')
+				mask = S_ISVTX;
+			else if (mode[n] == '2')
+				mask = S_ISGID;
+		}
+		else if (n == 1) {
+			if (mode[n] == '7') {
+				mask |= S_IRWXU;
+			}
+			if (mode[n] == '6') {
+				mask |= S_IRUSR;
+				mask |= S_IWUSR;
+			}
+			if (mode[n] == '5') {
+				mask |= S_IRUSR;
+				mask |= S_IXUSR;
+			}
+			if (mode[n] == '4')
+				mask |= S_IRUSR;
+			if (mode[n] == '3') {
+				mask |= S_IWUSR;
+				mask |= S_IRUSR;
+			}
+			if (mode[n] == '2')
+				mask |= S_IWUSR;
+			if (mode[n] == '1')
+				mask |= S_IXUSR;
+		}
+		else if (n == 2) {
+			if (mode[n] == '7') {
+				mask |= S_IRWXG;
+			}
+			if (mode[n] == '6') {
+				mask |= S_IRGRP;
+				mask |= S_IWGRP;
+			}
+			if (mode[n] == '5') {
+				mask |= S_IRGRP;
+				mask |= S_IXGRP;
+			}
+			if (mode[n] == '4')
+				mask |= S_IRGRP;
+			if (mode[n] == '3') {
+				mask |= S_IWGRP;
+				mask |= S_IXGRP;
+			}
+			if (mode[n] == '2')
+				mask |= S_IWGRP;
+			if (mode[n] == '1')
+				mask |= S_IXGRP;
+		}
+		else if (n == 3) {
+			if (mode[n] == '7') {
+				mask |= S_IRWXO;
+			}
+			if (mode[n] == '6') {
+				mask |= S_IROTH;
+				mask |= S_IWOTH;
+			}
+			if (mode[n] == '5') {
+				mask |= S_IROTH;
+				mask |= S_IXOTH;
+			}
+			if (mode[n] == '4')
+				mask |= S_IROTH;
+			if (mode[n] == '3') {
+				mask |= S_IWOTH;
+				mask |= S_IXOTH;
+			}
+			if (mode[n] == '2')
+				mask |= S_IWGRP;
+			if (mode[n] == '1')
+				mask |= S_IXGRP;
+		}
+	} 
+
+	if (chmod(fn.c_str(), mask) != 0) {
+		LOGE("Unable to chmod '%s' %l\n", fn.c_str(), mask);
+		return -1;
+	}
+
+	return 0;
+}
+
+int fixPermissions::removeDir(const string path) {
+	DIR *d = opendir(path.c_str());
+	int r = 0;
+	string new_path;
+
+	if (d == NULL) {
+		LOGE("Error opening '%s'\n", path.c_str());
+		return -1;
+	}
+
+	if (d) {
+		struct dirent *p;
+		while (!r && (p = readdir(d))) {
+			if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, ".."))
+				continue;
+
+			new_path = path + "/";
+			new_path.append(p->d_name);
+			if (p->d_type == DT_DIR) {
+				r = removeDir(new_path);
+				if (!r)
+					LOGI("Unable to removeDir '%s'\n", new_path.c_str());
+			} else {
+				r = unlink(new_path.c_str());
+				if (!r)
+					LOGI("Unable to unlink '%s'\n", new_path.c_str());
+			}
+		}
+		closedir(d);
+	}
+	if (!r)
+		r = rmdir(path.c_str());
+	if (!r)
+		LOGI("Unable to rmdir '%s'\n", path.c_str());
+
+	return r;
+}
+
+int fixPermissions::fixSystemApps() {
+	temp = head;
+	while (temp != NULL) {
+		if (TWFunc::Path_Exists(temp->codePath)) {
+			if (temp->appDir.compare("/system/app") == 0) {
+				if (debug)  {
+					LOGI("Looking at '%s'\n", temp->codePath.c_str());
+					LOGI("Fixing permissions on '%s'\n", temp->pkgName.c_str());
+					LOGI("Directory: '%s'\n", temp->appDir.c_str());
+					LOGI("Original package owner: %d, group: %d\n", temp->uid, temp->gid);
+				}
+				if (pchown(temp->codePath, 0, 0) != 0)
+					return -1;
+				if (pchmod(temp->codePath, "0644") != 0)
+					return -1;
+			}
+		} else {
+			//Remove data directory since app isn't installed
+			if (remove_data && TWFunc::Path_Exists(temp->dDir) && temp->appDir.size() >= 9 && temp->appDir.substr(0, 9) != "/mnt/asec") {
+				if (debug)
+					LOGI("Looking at '%s', removing data dir: '%s', appDir: '%s'", temp->codePath.c_str(), temp->dDir.c_str(), temp->appDir.c_str());
+				if (removeDir(temp->dDir) != 0) {
+					LOGI("Unable to removeDir '%s'\n", temp->dDir.c_str());
+					return -1;
+				}
+			}
+		}
+		temp = temp->next;
+	}
+	return 0;
+}
+
+int fixPermissions::fixDataApps() {
+	bool fix = false;
+	int new_gid = 0;
+	string perms = "0000";
+
+	temp = head;
+	while (temp != NULL) {
+		if (TWFunc::Path_Exists(temp->codePath)) {
+			if (temp->appDir.compare("/data/app") == 0 || temp->appDir.compare("/sd-ext/app") == 0) {
+				fix = true;
+				new_gid = 1000;
+				perms = "0644";
+			} else if (temp->appDir.compare("/data/app-private") == 0 || temp->appDir.compare("/sd-ext/app-private") == 0) {
+				fix = true;
+				new_gid = temp->gid;
+				perms = "0640";
+			} else
+				fix = false;
+			if (fix) {
+				if (debug) {
+					LOGI("Looking at '%s'\n", temp->codePath.c_str());
+					LOGI("Fixing permissions on '%s'\n", temp->pkgName.c_str());
+					LOGI("Directory: '%s'\n", temp->appDir.c_str());
+					LOGI("Original package owner: %d, group: %d\n", temp->uid, temp->gid);
+				}
+				if (pchown(temp->codePath, 1000, new_gid) != 0)
+					return -1;
+				if (pchmod(temp->codePath, perms) != 0)
+					return -1;
+			}
+		} else {
+			//Remove data directory since app isn't installed
+			if (remove_data && TWFunc::Path_Exists(temp->dDir) && temp->appDir.size() >= 9 && temp->appDir.substr(0, 9) != "/mnt/asec") {
+				if (debug)
+					LOGI("Looking at '%s', removing data dir: '%s', appDir: '%s'", temp->codePath.c_str(), temp->dDir.c_str(), temp->appDir.c_str());
+				if (removeDir(temp->dDir) != 0) {
+					LOGI("Unable to removeDir '%s'\n", temp->dDir.c_str());
+					return -1;
+				}
+			}
+		}
+		temp = temp->next;
+	}
+	return 0;
+}
+
+int fixPermissions::fixAllFiles(string directory, int gid, int uid, string file_perms) {
+	vector <string> files;
+	string file;
+
+	files = listAllFiles(directory);
+	for (unsigned i = 0; i < files.size(); ++i) {
+		file = directory + "/";
+		file.append(files.at(i));
+		if (debug)
+			LOGI("Looking at file '%s'\n", file.c_str());
+		if (pchmod(file, file_perms) != 0)
+			return -1;
+		if (pchown(file, uid, gid) != 0)
+			return -1;
+	}
+	return 0;
+}
+
+int fixPermissions::fixDataData() {
+	string directory;
+
+	temp = head;
+	while (temp != NULL) {
+		if (TWFunc::Path_Exists(temp->dDir)) {
+			vector <string> dataDataDirs = listAllDirectories(temp->dDir);
+			for (unsigned n = 0; n < dataDataDirs.size(); ++n) {
+				directory = temp->dDir + "/";
+				directory.append(dataDataDirs.at(n));
+				if (debug)
+					LOGI("Looking at data directory: '%s'\n", directory.c_str());
+				if (dataDataDirs.at(n) == ".") {
+					if (pchmod(temp->dDir, "0755") != 0)
+						return -1;
+					if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
+						return -1;
+					if (fixAllFiles(directory, temp->uid, temp->gid, "0755") != 0)
+						return -1;
+				}
+				else if (dataDataDirs.at(n) == "..") {
+					if (debug)
+						LOGI("Skipping ..\n");
+					continue;
+				}
+				else if (dataDataDirs.at(n) == "lib") {
+					if (pchmod(directory.c_str(), "0755") != 0)
+						return -1;
+					if (pchown(directory.c_str(), 1000, 1000) != 0)
+						return -1;
+					if (fixAllFiles(directory, temp->uid, temp->gid, "0755") != 0)
+						return -1;
+				}
+				else if (dataDataDirs.at(n) == "shared_prefs") {
+					if (pchmod(directory.c_str(), "0771") != 0)
+						return -1;
+					if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
+						return -1;
+					if (fixAllFiles(directory, temp->uid, temp->gid, "0660") != 0)
+						return -1;
+				}
+				else if (dataDataDirs.at(n) == "databases") {
+					if (pchmod(directory.c_str(), "0771") != 0)
+						return -1;
+					if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
+						return -1;
+					if (fixAllFiles(directory, temp->uid, temp->gid, "0660") != 0)
+						return -1;
+				}
+				else if (dataDataDirs.at(n) == "cache") {
+					if (pchmod(directory.c_str(), "0771") != 0)
+						return -1;
+					if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
+						return -1;
+					if (fixAllFiles(directory, temp->uid, temp->gid, "0600") != 0)
+						return -1;
+				}
+				else {
+					if (pchmod(directory.c_str(), "0771") != 0)
+						return -1;
+					if (pchown(directory.c_str(), temp->uid, temp->gid) != 0)
+						return -1;
+					if (fixAllFiles(directory, temp->uid, temp->gid, "0755") != 0)
+						return -1;
+				}
+			}
+		}
+		temp = temp->next;
+	}
+	return 0;
+}
+
+vector <string> fixPermissions::listAllDirectories(string path) {
+	DIR *dir = opendir(path.c_str());
+	struct dirent *entry = readdir(dir);
+	vector <string> dirs;
+
+	if (dir == NULL) {
+		LOGE("Error opening '%s'\n", path.c_str());
+		return dirs;
+	}
+
+	while (entry != NULL) {
+		if (entry->d_type == DT_DIR)
+			dirs.push_back(entry->d_name);
+		entry = readdir(dir);
+	}
+	closedir(dir);
+	return dirs;
+}
+
+vector <string> fixPermissions::listAllFiles(string path) {
+	DIR *dir = opendir(path.c_str());
+	struct dirent *entry = readdir(dir);
+	vector <string> files;
+
+	if (dir == NULL) {
+		LOGE("Error opening '%s'\n", path.c_str());
+		return files;
+	}
+
+	while (entry != NULL) {
+		if (entry->d_type == DT_REG)
+			files.push_back(entry->d_name);
+		entry = readdir(dir);
+	}
+	closedir(dir);
+	return files;
+}
+
+int fixPermissions::getPackages() {
+	int len = 0;
+	bool skiploop = false;
+	vector <string> skip;
+	string dataDir;
+	string name;
+	head = NULL;
+
+	skip.push_back("/system/framework/framework-res.apk");
+	skip.push_back("/system/framework/com.htc.resources.apk");
+
+	ifstream xmlFile(packageFile.c_str());
+	xmlFile.seekg(0, ios::end);
+	len = (int) xmlFile.tellg();
+	xmlFile.seekg(0, ios::beg);
+	char xmlBuf[len + 1];
+	xmlFile.read(&xmlBuf[0], len);
+	xmlBuf[len] = '\0';
+	xml_document<> pkgDoc;
+	pkgDoc.parse<parse_full>(&xmlBuf[0]);
+
+	xml_node<> * pkgNode = pkgDoc.first_node("packages");
+	xml_node <> * next = pkgNode->first_node("package");
+
+	if (next == NULL) {
+		LOGE("No packages found to fix.\n");
+		return -1;
+	}
+
+	//Get packages
+	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());
+		temp->codePath = next->first_attribute("codePath")->value();
+		temp->app = basename(next->first_attribute("codePath")->value());
+		temp->appDir = dirname(next->first_attribute("codePath")->value());
+		dataDir.append("/data/data/");
+		dataDir.append(name);
+		temp->dDir = dataDir;
+		if ( next->first_attribute("sharedUserId") != NULL) {
+			temp->uid = atoi(next->first_attribute("sharedUserId")->value());
+			temp->gid = atoi(next->first_attribute("sharedUserId")->value());
+		}
+		else {
+			temp->uid = atoi(next->first_attribute("userId")->value());
+			temp->gid = atoi(next->first_attribute("userId")->value());
+		}
+		next = next->next_sibling();
+		name.clear();
+		dataDir.clear();
+		temp->next = head;
+		head = temp;
+	}
+	//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());
+			temp->codePath = next->first_attribute("codePath")->value();
+			temp->app = basename(next->first_attribute("codePath")->value());
+			temp->appDir = dirname(next->first_attribute("codePath")->value());
+
+			dataDir.append("/data/data/");
+			dataDir.append(name);
+			temp->dDir = dataDir;
+			if ( next->first_attribute("sharedUserId") != NULL) {
+				temp->uid = atoi(next->first_attribute("sharedUserId")->value());
+				temp->gid = atoi(next->first_attribute("sharedUserId")->value());
+			}
+			else {
+				temp->uid = atoi(next->first_attribute("userId")->value());
+				temp->gid = atoi(next->first_attribute("userId")->value());
+			}
+			next = next->next_sibling();
+			name.clear();
+			dataDir.clear();
+			temp->next = head;
+			head = temp;
+		}
+	}
+	return 0;
+}