diff options
Diffstat (limited to 'twrpDigestDriver.cpp')
| -rw-r--r-- | twrpDigestDriver.cpp | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/twrpDigestDriver.cpp b/twrpDigestDriver.cpp new file mode 100644 index 000000000..71ec9840b --- /dev/null +++ b/twrpDigestDriver.cpp @@ -0,0 +1,218 @@ +/* + Copyright 2013 to 2017 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 <fcntl.h> +#include <string> +#include <unistd.h> +#include "data.hpp" +#include "partitions.hpp" +#include "set_metadata.h" +#include "twrpDigestDriver.hpp" +#include "twrp-functions.hpp" +#include "twcommon.h" +#include "variables.h" +#include "gui/gui.hpp" +#include "twrpDigest/twrpDigest.hpp" +#include "twrpDigest/twrpMD5.hpp" +#include "twrpDigest/twrpSHA.hpp" + + +bool twrpDigestDriver::Check_Restore_File_Digest(const string& Filename) { + twrpDigest *digest; + string digestfile = Filename, file_name = Filename; + string digest_str; + bool use_sha2 = false; + +#ifndef TW_NO_SHA2_LIBRARY + + digestfile += ".sha2"; + if (TWFunc::Path_Exists(digestfile)) { + digest = new twrpSHA256(); + use_sha2 = true; + } + else { + digest = new twrpMD5(); + digestfile = Filename + ".md5"; + + } +#else + digest = new twrpMD5(); + digestfile = Filename + ".md5"; + +#endif + + if (!TWFunc::Path_Exists(digestfile)) { + gui_msg(Msg(msg::kError, "no_digest_found=No digest file found for '{1}'. Please unselect Enable Digest verification to restore.")(Filename)); + delete digest; + return false; + } + + + if (TWFunc::read_file(digestfile, digest_str) != 0) { + gui_msg("digest_error=Digest Error!"); + delete digest; + return false; + } + + if (!stream_file_to_digest(file_name, digest)) { + delete digest; + return false; + } + string digest_check = digest->return_digest_string(); + if (digest_check == digest_str) { + if (use_sha2) + LOGINFO("SHA2 Digest: %s %s\n", digest_str.c_str(), TWFunc::Get_Filename(Filename).c_str()); + else + LOGINFO("MD5 Digest: %s %s\n", digest_str.c_str(), TWFunc::Get_Filename(Filename).c_str()); + delete digest; + return true; + } + + gui_msg(Msg(msg::kError, "digest_fail_match=Digest failed to match on '{1}'.")(Filename)); + delete digest; + return false; + +} + +bool twrpDigestDriver::Check_Digest(string Full_Filename) { + char split_filename[512]; + int index = 0; + + sync(); + if (!TWFunc::Path_Exists(Full_Filename)) { + // This is a split archive, we presume + memset(split_filename, 0, sizeof(split_filename)); + while (index < 1000) { + sprintf(split_filename, "%s%03i", Full_Filename.c_str(), index); + if (!TWFunc::Path_Exists(split_filename)) + break; + LOGINFO("split_filename: %s\n", split_filename); + if (!Check_Restore_File_Digest(split_filename)) + return false; + index++; + } + return true; + } + return Check_Restore_File_Digest(Full_Filename); // Single file archive +} + +bool twrpDigestDriver::Write_Digest(string Full_Filename) { + twrpDigest *digest; + string digest_filename, digest_str; + int use_sha2; + +#ifdef TW_NO_SHA2_LIBRARY + use_sha2 = 0; +#else + DataManager::GetValue(TW_USE_SHA2, use_sha2); +#endif + + if (use_sha2) { +#ifndef TW_NO_SHA2_LIBRARY + digest = new twrpSHA256(); + digest_filename = Full_Filename + ".sha2"; + if (!stream_file_to_digest(Full_Filename, digest)) { + delete digest; + return false; + } + digest_str = digest->return_digest_string(); + if (digest_str.empty()) { + delete digest; + return false; + } + LOGINFO("SHA2 Digest: %s %s\n", digest_str.c_str(), TWFunc::Get_Filename(Full_Filename).c_str()); +#endif + } + else { + digest = new twrpMD5(); + digest_filename = Full_Filename + ".md5"; + if (!stream_file_to_digest(Full_Filename, digest)) { + delete digest; + return false; + } + digest_str = digest->return_digest_string(); + if (digest_str.empty()) { + delete digest; + return false; + } + LOGINFO("MD5 Digest: %s %s\n", digest_str.c_str(), TWFunc::Get_Filename(Full_Filename).c_str()); + } + + digest_str = digest_str + " " + TWFunc::Get_Filename(Full_Filename) + "\n"; + LOGINFO("digest_filename: %s\n", digest_filename.c_str()); + + if (TWFunc::write_file(digest_filename, digest_str) == 0) { + tw_set_default_metadata(digest_filename.c_str()); + gui_msg("digest_created= * Digest Created."); + } + else { + gui_err("digest_error= * Digest Error!"); + delete digest; + return false; + } + delete digest; + return true; +} + +bool twrpDigestDriver::Make_Digest(string Full_Filename) { + string command, result; + + TWFunc::GUI_Operation_Text(TW_GENERATE_DIGEST_TEXT, gui_parse_text("{@generating_digest1}")); + gui_msg("generating_digest2= * Generating digest..."); + if (TWFunc::Path_Exists(Full_Filename)) { + if (!Write_Digest(Full_Filename)) + return false; + } else { + char filename[512]; + int index = 0; + sprintf(filename, "%s%03i", Full_Filename.c_str(), index); + while (index < 1000) { + string digest_src(filename); + if (TWFunc::Path_Exists(filename)) { + if (!Write_Digest(filename)) + return false; + } + else + break; + index++; + sprintf(filename, "%s%03i", Full_Filename.c_str(), index); + } + if (index == 0) { + LOGERR("Backup file: '%s' not found!\n", filename); + return false; + } + gui_msg("digest_created= * Digest Created."); + } + return true; +} + +bool twrpDigestDriver::stream_file_to_digest(string filename, twrpDigest* digest) { + char buf[4096]; + int bytes; + + int fd = open(filename.c_str(), O_RDONLY); + if (fd < 0) { + return false; + } + while ((bytes = read(fd, &buf, sizeof(buf))) != 0) { + digest->update((unsigned char*)buf, bytes); + } + close(fd); + return true; +} |