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-rw-r--r--adbbu/twrpback.cpp823
1 files changed, 823 insertions, 0 deletions
diff --git a/adbbu/twrpback.cpp b/adbbu/twrpback.cpp
new file mode 100644
index 000000000..e22574b27
--- /dev/null
+++ b/adbbu/twrpback.cpp
@@ -0,0 +1,823 @@
+/*
+ Copyright 2013 to 2016 TeamWin
+ 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <zlib.h>
+#include <ctype.h>
+#include <semaphore.h>
+#include <string>
+#include <fstream>
+#include <sstream>
+#include <algorithm>
+
+#include "twadbstream.h"
+#include "twrpback.hpp"
+#include "../variables.h"
+#include "../twcommon.h"
+#include "../twrpDigest.hpp"
+
+twrpback::twrpback(void) {
+ read_fd = 0;
+ write_fd = 0;
+ adb_control_twrp_fd = 0;
+ adb_control_bu_fd = 0;
+ adb_read_fd = 0;
+ adb_write_fd = 0;
+ adb_write_fd = 0;
+ ors_fd = 0;
+ firstPart = true;
+ adbloginit();
+}
+
+twrpback::~twrpback(void) {
+ adblogfile.close();
+}
+
+void twrpback::adbloginit(void) {
+ adblogfile.open("/tmp/adb.log", std::fstream::app);
+}
+
+void twrpback::adblogwrite(std::string writemsg) {
+ adblogfile << writemsg << std::flush;
+}
+
+void twrpback::close_backup_fds() {
+ if (ors_fd > 0)
+ close(ors_fd);
+ if (write_fd > 0)
+ close(write_fd);
+ if (adb_read_fd > 0)
+ close(adb_read_fd);
+ if (adb_control_bu_fd > 0)
+ close(adb_control_bu_fd);
+ if (adbd_fp != NULL)
+ fclose(adbd_fp);
+ if (access(TW_ADB_BACKUP, F_OK) == 0)
+ unlink(TW_ADB_BACKUP);
+}
+
+void twrpback::close_restore_fds() {
+ if (ors_fd > 0)
+ close(ors_fd);
+ if (write_fd > 0)
+ close(write_fd);
+ if (adb_control_bu_fd > 0)
+ close(adb_control_bu_fd);
+ if (adb_control_twrp_fd > 0)
+ close(adb_control_twrp_fd);
+ if (adbd_fp != NULL)
+ fclose(adbd_fp);
+ if (access(TW_ADB_RESTORE, F_OK) == 0)
+ unlink(TW_ADB_RESTORE);
+}
+
+int twrpback::backup(std::string command) {
+ twrpDigest adb_md5;
+ bool breakloop = false;
+ int bytes = 0, errctr = 0;
+ char result[MAX_ADB_READ];
+ uint64_t totalbytes = 0, dataChunkBytes = 0;
+ int64_t count = -1; // Count of how many blocks set
+ uint64_t md5fnsize = 0;
+ struct AdbBackupControlType endadb;
+
+ ADBSTRUCT_STATIC_ASSERT(sizeof(endadb) == MAX_ADB_READ);
+
+ bool writedata = true;
+ bool compressed = false;
+ bool firstDataPacket = true;
+
+ adbd_fp = fdopen(adbd_fd, "w");
+ if (adbd_fp == NULL) {
+ adblogwrite("Unable to open adb_fp\n");
+ return -1;
+ }
+
+ if (mkfifo(TW_ADB_BACKUP, 0666) < 0) {
+ adblogwrite("Unable to create TW_ADB_BACKUP fifo\n");
+ return -1;
+ }
+
+ adblogwrite("opening ORS_INPUT_FILE\n");
+ write_fd = open(ORS_INPUT_FILE, O_WRONLY);
+ while (write_fd < 0) {
+ write_fd = open(ORS_INPUT_FILE, O_WRONLY);
+ usleep(10000);
+ errctr++;
+ if (errctr > ADB_BU_MAX_ERROR) {
+ adblogwrite("Unable to open ORS_INPUT_FILE\n");
+ close_backup_fds();
+ return -1;
+ }
+ }
+
+ sprintf(operation, "adbbackup %s", command.c_str());
+ if (write(write_fd, operation, sizeof(operation)) != sizeof(operation)) {
+ adblogwrite("Unable to write to ORS_INPUT_FILE\n");
+ close_backup_fds();
+ return -1;
+ }
+
+ adblogwrite("opening ORS_OUTPUT_FILE\n");
+ ors_fd = open(ORS_OUTPUT_FILE, O_RDONLY);
+ if (ors_fd < 0) {
+ adblogwrite("Unable to open ORS_OUTPUT_FILE\n");
+ close_backup_fds();
+ return -1;
+ }
+
+ memset(&result, 0, sizeof(result));
+ memset(&cmd, 0, sizeof(cmd));
+
+ adblogwrite("opening TW_ADB_BU_CONTROL\n");
+ adb_control_bu_fd = open(TW_ADB_BU_CONTROL, O_RDONLY | O_NONBLOCK);
+ if (adb_control_bu_fd < 0) {
+ adblogwrite("Unable to open TW_ADB_BU_CONTROL for reading.\n");
+ close_backup_fds();
+ return -1;
+ }
+
+ adblogwrite("opening TW_ADB_BACKUP\n");
+ adb_read_fd = open(TW_ADB_BACKUP, O_RDONLY | O_NONBLOCK);
+ if (adb_read_fd < 0) {
+ adblogwrite("Unable to open TW_ADB_BACKUP for reading.\n");
+ close_backup_fds();
+ return -1;
+ }
+
+ //loop until TWENDADB sent
+ while (!breakloop) {
+ if (read(adb_control_bu_fd, &cmd, sizeof(cmd)) > 0) {
+ struct AdbBackupControlType structcmd;
+
+ memcpy(&structcmd, cmd, sizeof(cmd));
+ std::string cmdstr(structcmd.type);
+ std::string cmdtype = cmdstr.substr(0, sizeof(structcmd.type) - 1);
+
+ //we received an error, exit and unlink
+ if (cmdtype == TWERROR) {
+ writedata = false;
+ adblogwrite("Error received. Quitting...\n");
+ close_backup_fds();
+ return -1;
+ }
+ //we received the end of adb backup stream so we should break the loop
+ else if (cmdtype == TWENDADB) {
+ writedata = false;
+ adblogwrite("Recieved TWENDADB\n");
+ memcpy(&endadb, cmd, sizeof(cmd));
+ stringstream str;
+ str << totalbytes;
+ adblogwrite(str.str() + " total bytes written\n");
+ breakloop = true;
+ }
+ //we recieved the TWSTREAMHDR structure metadata to write to adb
+ else if (cmdtype == TWSTREAMHDR) {
+ writedata = false;
+ adblogwrite("Writing TWSTREAMHDR\n");
+ if (fwrite(cmd, 1, sizeof(cmd), adbd_fp) != sizeof(cmd)) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Error writing TWSTREAMHDR to adbd" + str.str() + "\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ }
+ //we will be writing an image from TWRP
+ else if (cmdtype == TWIMG) {
+ struct twfilehdr twimghdr;
+
+ adblogwrite("Writing TWIMG\n");
+ adb_md5.initMD5();
+
+ memset(&twimghdr, 0, sizeof(twimghdr));
+ memcpy(&twimghdr, cmd, sizeof(cmd));
+ md5fnsize = twimghdr.size;
+
+ if (fwrite(cmd, 1, sizeof(cmd), adbd_fp) != sizeof(cmd)) {
+ adblogwrite("Error writing TWIMG to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ writedata = true;
+ }
+ //we will be writing a tar from TWRP
+ else if (cmdtype == TWFN) {
+ struct twfilehdr twfilehdr;
+
+ adblogwrite("Writing TWFN\n");
+ adb_md5.initMD5();
+
+ ADBSTRUCT_STATIC_ASSERT(sizeof(twfilehdr) == MAX_ADB_READ);
+
+ memset(&twfilehdr, 0, sizeof(twfilehdr));
+ memcpy(&twfilehdr, cmd, sizeof(cmd));
+ md5fnsize = twfilehdr.size;
+
+ compressed = twfilehdr.compressed == 1 ? true: false;
+
+ if (fwrite(cmd, 1, sizeof(cmd), adbd_fp) != sizeof(cmd)) {
+ adblogwrite("Error writing TWFN to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ writedata = true;
+ }
+ /*
+ We received the command that we are done with the file stream.
+ We will flush the remaining data stream.
+ Update md5 and write final results to adb stream.
+ If we need padding because the total bytes are not a multiple
+ of 512, we pad the end with 0s to we reach 512.
+ We also write the final md5 to the adb stream.
+ */
+ else if (cmdtype == TWEOF) {
+ adblogwrite("received TWEOF\n");
+ count = totalbytes / MAX_ADB_READ + 1;
+ count = count * MAX_ADB_READ;
+
+ while ((bytes = read(adb_read_fd, &result, sizeof(result))) == MAX_ADB_READ) {
+ totalbytes += bytes;
+ char *writeresult = new char [bytes];
+ memcpy(writeresult, result, bytes);
+ if (adb_md5.updateMD5stream((unsigned char *) writeresult, bytes) == -1)
+ adblogwrite("failed to update md5 stream\n");
+ if (fwrite(writeresult, 1, bytes, adbd_fp) != bytes) {
+ adblogwrite("Error writing backup data to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ delete [] writeresult;
+ memset(&result, 0, sizeof(result));
+ }
+
+ if ((totalbytes % MAX_ADB_READ) != 0) {
+ adblogwrite("writing padding to stream\n");
+ char padding[count - totalbytes];
+ memset(padding, 0, sizeof(padding));
+ if (fwrite(padding, 1, sizeof(padding), adbd_fp) != sizeof(padding)) {
+ adblogwrite("Error writing padding to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ if (adb_md5.updateMD5stream((unsigned char *) padding, sizeof(padding)) == -1)
+ adblogwrite("failed to update md5 stream\n");
+ fflush(adbd_fp);
+ totalbytes = 0;
+ }
+
+ AdbBackupFileTrailer md5trailer;
+
+ memset(&md5trailer, 0, sizeof(md5trailer));
+ adb_md5.finalizeMD5stream();
+
+ std::string md5string = adb_md5.createMD5string();
+
+ strncpy(md5trailer.start_of_trailer, TWRP, sizeof(md5trailer.start_of_trailer));
+ strncpy(md5trailer.type, MD5TRAILER, sizeof(md5trailer.type));
+ strncpy(md5trailer.md5, md5string.c_str(), sizeof(md5trailer.md5));
+
+ md5trailer.crc = crc32(0L, Z_NULL, 0);
+ md5trailer.crc = crc32(md5trailer.crc, (const unsigned char*) &md5trailer, sizeof(md5trailer));
+
+ md5trailer.ident = crc32(0L, Z_NULL, 0);
+ md5trailer.ident = crc32(md5trailer.ident, (const unsigned char*) &md5trailer, sizeof(md5trailer));
+ md5trailer.ident = crc32(md5trailer.ident, (const unsigned char*) &md5fnsize, sizeof(md5fnsize));
+
+ if (fwrite(&md5trailer, 1, sizeof(md5trailer), adbd_fp) != sizeof(md5trailer)) {
+ adblogwrite("Error writing md5trailer to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ writedata = false;
+ firstDataPacket = true;
+ }
+ memset(&cmd, 0, sizeof(cmd));
+ }
+ //If we are to write data because of a new file stream, lets write all the data.
+ //This will allow us to not write data after a command structure has been written
+ //to the adb stream.
+ //If the stream is compressed, we need to always write the data.
+ if (writedata || compressed) {
+ while ((bytes = read(adb_read_fd, &result, sizeof(result))) == MAX_ADB_READ) {
+ if (firstDataPacket) {
+ struct AdbBackupControlType data_block;
+
+ memset(&data_block, 0, sizeof(data_block));
+ strncpy(data_block.start_of_header, TWRP, sizeof(data_block.start_of_header));
+ strncpy(data_block.type, TWDATA, sizeof(data_block.type));
+ data_block.crc = crc32(0L, Z_NULL, 0);
+ data_block.crc = crc32(data_block.crc, (const unsigned char*) &data_block, sizeof(data_block));
+ if (fwrite(&data_block, 1, sizeof(data_block), adbd_fp) != sizeof(data_block)) {
+ adblogwrite("Error writing data_block to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ firstDataPacket = false;
+ }
+ char *writeresult = new char [bytes];
+ memcpy(writeresult, result, bytes);
+
+ if (adb_md5.updateMD5stream((unsigned char *) writeresult, bytes) == -1)
+ adblogwrite("failed to update md5 stream\n");
+
+ totalbytes += bytes;
+ dataChunkBytes += bytes;
+
+ if (fwrite(writeresult, 1, bytes, adbd_fp) != bytes) {
+ adblogwrite("Error writing backup data to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+
+ delete [] writeresult;
+ memset(&result, 0, sizeof(result));
+ if (dataChunkBytes == DATA_MAX_CHUNK_SIZE - sizeof(result)) {
+ struct AdbBackupControlType data_block;
+
+ memset(&data_block, 0, sizeof(data_block));
+ strncpy(data_block.start_of_header, TWRP, sizeof(data_block.start_of_header));
+ strncpy(data_block.type, TWDATA, sizeof(data_block.type));
+ data_block.crc = crc32(0L, Z_NULL, 0);
+ data_block.crc = crc32(data_block.crc, (const unsigned char*) &data_block, sizeof(data_block));
+ if (fwrite(&data_block, 1, sizeof(data_block), adbd_fp) != sizeof(data_block)) {
+ adblogwrite("Error writing data_block to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ dataChunkBytes = 0;
+ }
+
+ }
+ compressed = false;
+ }
+ }
+
+ //Write the final end adb structure to the adb stream
+ if (fwrite(&endadb, 1, sizeof(endadb), adbd_fp) != sizeof(endadb)) {
+ adblogwrite("Error writing endadb to adbd\n");
+ close_backup_fds();
+ return -1;
+ }
+ fflush(adbd_fp);
+ close_backup_fds();
+ return 0;
+}
+
+int twrpback::restore(void) {
+ twrpDigest adb_md5;
+ char cmd[MAX_ADB_READ];
+ char result[MAX_ADB_READ];
+ struct AdbBackupControlType structcmd;
+ int adb_control_twrp_fd, errctr = 0;
+ uint64_t totalbytes = 0, dataChunkBytes = 0;
+ uint64_t md5fnsize = 0;
+ bool writedata, read_from_adb;
+ bool breakloop, eofsent, md5trsent;
+
+ breakloop = false;
+ read_from_adb = true;
+
+ signal(SIGPIPE, SIG_IGN);
+
+ adbd_fp = fdopen(adbd_fd, "r");
+ if (adbd_fp == NULL) {
+ adblogwrite("Unable to open adb_fp\n");
+ close_restore_fds();
+ return -1;
+ }
+
+ if(mkfifo(TW_ADB_RESTORE, 0666)) {
+ adblogwrite("Unable to create TW_ADB_RESTORE fifo\n");
+ close_restore_fds();
+ return -1;
+ }
+
+ adblogwrite("opening ORS_INPUT_FILE\n");
+ write_fd = open(ORS_INPUT_FILE, O_WRONLY);
+
+ while (write_fd < 0) {
+ write_fd = open(ORS_INPUT_FILE, O_WRONLY);
+ errctr++;
+ if (errctr > ADB_BU_MAX_ERROR) {
+ adblogwrite("Unable to open ORS_INPUT_FILE\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+
+ sprintf(operation, "adbrestore");
+ if (write(write_fd, operation, sizeof(operation)) != sizeof(operation)) {
+ adblogwrite("Unable to write to ORS_INPUT_FILE\n");
+ close_restore_fds();
+ return -1;
+ }
+
+ ors_fd = open(ORS_OUTPUT_FILE, O_RDONLY);
+ if (ors_fd < 0) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Unable to write to ORS_OUTPUT_FILE: " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+
+ memset(&result, 0, sizeof(result));
+ memset(&cmd, 0, sizeof(cmd));
+
+ adblogwrite("opening TW_ADB_BU_CONTROL\n");
+ adb_control_bu_fd = open(TW_ADB_BU_CONTROL, O_RDONLY | O_NONBLOCK);
+ if (adb_control_bu_fd < 0) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Unable to open TW_ADB_BU_CONTROL for writing. " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+
+ adblogwrite("opening TW_ADB_TWRP_CONTROL\n");
+ adb_control_twrp_fd = open(TW_ADB_TWRP_CONTROL, O_WRONLY | O_NONBLOCK);
+ if (adb_control_twrp_fd < 0) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Unable to open TW_ADB_TWRP_CONTROL for writing. " + str.str() + ". Retrying...\n");
+ while (adb_control_twrp_fd < 0) {
+ adb_control_twrp_fd = open(TW_ADB_TWRP_CONTROL, O_WRONLY | O_NONBLOCK);
+ usleep(10000);
+ errctr++;
+ if (errctr > ADB_BU_MAX_ERROR) {
+ adblogwrite("Unable to open TW_ADB_TWRP_CONTROL\n");
+ close_backup_fds();
+ return -1;
+ }
+ }
+ }
+
+ //Loop until we receive TWENDADB from TWRP
+ while (!breakloop) {
+ memset(&cmd, 0, sizeof(cmd));
+ if (read(adb_control_bu_fd, &cmd, sizeof(cmd)) > 0) {
+ struct AdbBackupControlType structcmd;
+ memcpy(&structcmd, cmd, sizeof(cmd));
+ std::string cmdstr(structcmd.type);
+ std::string cmdtype = cmdstr.substr(0, sizeof(structcmd.type) - 1);
+
+ //If we receive TWEOF from TWRP close adb data fifo
+ if (cmdtype == TWEOF) {
+ adblogwrite("Received TWEOF\n");
+ struct AdbBackupControlType tweof;
+
+ memset(&tweof, 0, sizeof(tweof));
+ memcpy(&tweof, result, sizeof(result));
+ read_from_adb = true;
+ }
+ //Break when TWRP sends TWENDADB
+ else if (cmdtype == TWENDADB) {
+ adblogwrite("Received TWENDADB\n");
+ breakloop = true;
+ close_restore_fds();
+ }
+ //we received an error, exit and unlink
+ else if (cmdtype == TWERROR) {
+ adblogwrite("Error received. Quitting...\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+
+ //If we should read from the adb stream, write commands and data to TWRP
+ if (read_from_adb) {
+ std::string cmdstr;
+ int readbytes;
+ if ((readbytes = fread(result, 1, sizeof(result), adbd_fp)) == sizeof(result)) {
+ totalbytes += readbytes;
+ memcpy(&structcmd, result, sizeof(result));
+ cmdstr = structcmd.type;
+ std::string cmdtype = cmdstr.substr(0, sizeof(structcmd.type) - 1);
+
+ //Tell TWRP we have read the entire adb stream
+ if (cmdtype == TWENDADB) {
+ struct AdbBackupControlType endadb;
+ uint32_t crc, endadbcrc;
+
+ totalbytes -= sizeof(result);
+ memset(&endadb, 0, sizeof(endadb));
+ memcpy(&endadb, result, sizeof(result));
+ endadbcrc = endadb.crc;
+ memset(&endadb.crc, 0, sizeof(endadb.crc));
+ crc = crc32(0L, Z_NULL, 0);
+ crc = crc32(crc, (const unsigned char*) &endadb, sizeof(endadb));
+
+ if (crc == endadbcrc) {
+ adblogwrite("Sending TWENDADB\n");
+ if (write(adb_control_twrp_fd, &endadb, sizeof(endadb)) < 1) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Cannot write to ADB_CONTROL_READ_FD: " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+ else {
+ adblogwrite("ADB TWENDADB crc header doesn't match\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+ //Send TWRP partition metadata
+ else if (cmdtype == TWSTREAMHDR) {
+ struct AdbBackupStreamHeader cnthdr;
+ uint32_t crc, cnthdrcrc;
+
+ ADBSTRUCT_STATIC_ASSERT(sizeof(cnthdr) == MAX_ADB_READ);
+ totalbytes -= sizeof(result);
+
+ memset(&cnthdr, 0, sizeof(cnthdr));
+ memcpy(&cnthdr, result, sizeof(result));
+ cnthdrcrc = cnthdr.crc;
+ memset(&cnthdr.crc, 0, sizeof(cnthdr.crc));
+ crc = crc32(0L, Z_NULL, 0);
+ crc = crc32(crc, (const unsigned char*) &cnthdr, sizeof(cnthdr));
+
+ if (crc == cnthdrcrc) {
+ adblogwrite("Restoring TWSTREAMHDR\n");
+ if (write(adb_control_twrp_fd, result, sizeof(result)) < 0) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Cannot write to adb_control_twrp_fd: " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+ else {
+ adblogwrite("ADB TWSTREAMHDR crc header doesn't match\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+ //Tell TWRP we are sending a partition image
+ else if (cmdtype == TWIMG) {
+ struct twfilehdr twimghdr;
+ uint32_t crc, twimghdrcrc;
+
+ totalbytes -= sizeof(result);
+ adb_md5.initMD5();
+ adblogwrite("Restoring TWIMG\n");
+ memset(&twimghdr, 0, sizeof(twimghdr));
+ memcpy(&twimghdr, result, sizeof(result));
+ md5fnsize = twimghdr.size;
+ twimghdrcrc = twimghdr.crc;
+ memset(&twimghdr.crc, 0, sizeof(twimghdr.crc));
+
+ crc = crc32(0L, Z_NULL, 0);
+ crc = crc32(crc, (const unsigned char*) &twimghdr, sizeof(twimghdr));
+ if (crc == twimghdrcrc) {
+ if (write(adb_control_twrp_fd, result, sizeof(result)) < 1) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Cannot write to adb_control_twrp_fd: " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+ else {
+ adblogwrite("ADB TWIMG crc header doesn't match\n");
+ close_restore_fds();
+ return -1;
+ }
+ adblogwrite("opening TW_ADB_RESTORE\n");
+ adb_write_fd = open(TW_ADB_RESTORE, O_WRONLY);
+ }
+ //Tell TWRP we are sending a tar stream
+ else if (cmdtype == TWFN) {
+ struct twfilehdr twfilehdr;
+ uint32_t crc, twfilehdrcrc;
+
+ totalbytes -= sizeof(result);
+ adb_md5.initMD5();
+ adblogwrite("Restoring TWFN\n");
+ memset(&twfilehdr, 0, sizeof(twfilehdr));
+ memcpy(&twfilehdr, result, sizeof(result));
+ md5fnsize = twfilehdr.size;
+ twfilehdrcrc = twfilehdr.crc;
+ memset(&twfilehdr.crc, 0, sizeof(twfilehdr.crc));
+
+ crc = crc32(0L, Z_NULL, 0);
+ crc = crc32(crc, (const unsigned char*) &twfilehdr, sizeof(twfilehdr));
+
+ if (crc == twfilehdrcrc) {
+ if (write(adb_control_twrp_fd, result, sizeof(result)) < 1) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Cannot write to adb_control_twrp_fd: " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+ else {
+ adblogwrite("ADB TWFN crc header doesn't match\n");
+ close_restore_fds();
+ return -1;
+ }
+
+ adblogwrite("opening TW_ADB_RESTORE\n");
+ adb_write_fd = open(TW_ADB_RESTORE, O_WRONLY);
+ }
+ //Send the tar or partition image md5 to TWRP
+ else if (cmdtype == TWDATA) {
+ totalbytes -= sizeof(result);
+ while (1) {
+ if ((readbytes = fread(result, 1, sizeof(result), adbd_fp)) != sizeof(result)) {
+ close_restore_fds();
+ return -1;
+ }
+ totalbytes += readbytes;
+ memcpy(&structcmd, result, sizeof(result));
+ cmdstr = structcmd.type;
+
+ if (cmdstr.substr(0, sizeof(MD5TRAILER) - 1) == MD5TRAILER) {
+ struct AdbBackupFileTrailer md5tr;
+ uint32_t crc, md5trcrc, md5ident, md5identmatch;
+
+ ADBSTRUCT_STATIC_ASSERT(sizeof(md5tr) == MAX_ADB_READ);
+ memset(&md5tr, 0, sizeof(md5tr));
+ memcpy(&md5tr, result, sizeof(result));
+ md5ident = md5tr.ident;
+
+ memset(&md5tr.ident, 0, sizeof(md5tr.ident));
+
+ md5identmatch = crc32(0L, Z_NULL, 0);
+ md5identmatch = crc32(md5identmatch, (const unsigned char*) &md5tr, sizeof(md5tr));
+ md5identmatch = crc32(md5identmatch, (const unsigned char*) &md5fnsize, sizeof(md5fnsize));
+
+ if (md5identmatch == md5ident) {
+ totalbytes -= sizeof(result);
+ close(adb_write_fd);
+ adblogwrite("Restoring MD5TRAILER\n");
+ md5trcrc = md5tr.crc;
+ memset(&md5tr.crc, 0, sizeof(md5tr.crc));
+ crc = crc32(0L, Z_NULL, 0);
+ crc = crc32(crc, (const unsigned char*) &md5tr, sizeof(md5tr));
+ if (crc == md5trcrc) {
+ if (write(adb_control_twrp_fd, result, sizeof(result)) < 1) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Cannot write to adb_control_twrp_fd: " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+ }
+ else {
+ adblogwrite("ADB MD5TRAILER crc header doesn't match\n");
+ close_restore_fds();
+ return -1;
+ }
+ adblogwrite("md5 finalize stream\n");
+ adb_md5.finalizeMD5stream();
+
+ AdbBackupFileTrailer md5;
+
+ memset(&md5, 0, sizeof(md5));
+ strncpy(md5.start_of_trailer, TWRP, sizeof(md5.start_of_trailer));
+ strncpy(md5.type, TWMD5, sizeof(md5.type));
+ std::string md5string = adb_md5.createMD5string();
+ strncpy(md5.md5, md5string.c_str(), sizeof(md5.md5));
+
+ adblogwrite("Sending MD5Check\n");
+ if (write(adb_control_twrp_fd, &md5, sizeof(md5)) < 1) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Cannot write to adb_control_twrp_fd: " + str.str() + "\n");
+ close_restore_fds();
+ return -1;
+ }
+ read_from_adb = false; //don't read from adb until TWRP sends TWEOF
+ break;
+ }
+ }
+ if (adb_md5.updateMD5stream((unsigned char*)result, sizeof(result)) == -1)
+ adblogwrite("failed to update md5 stream\n");
+ dataChunkBytes += readbytes;
+
+ if (write(adb_write_fd, result, sizeof(result)) < 0) {
+ stringstream str;
+ str << strerror(errno);
+ adblogwrite("Cannot write to adb_write_fd\n" + str.str() + ". Retrying.\n");
+ while(write(adb_write_fd, result, sizeof(result)) < 0) {
+ adblogwrite("Cannot write to adb_write_fd\n" + str.str() + ". Retrying.\n");
+ continue;
+ }
+ }
+ if (dataChunkBytes == ((DATA_MAX_CHUNK_SIZE) - sizeof(result))) {
+ dataChunkBytes = 0;
+ break;
+ }
+ memset(&result, 0, sizeof(result));
+ }
+ }
+ }
+ }
+ }
+
+ stringstream str;
+ str << totalbytes;
+ adblogwrite(str.str() + " bytes restored from adbbackup\n");
+ return 0;
+}
+
+int main(int argc, char **argv) {
+ int index;
+ int ret = 0, pos = 0;
+ std::string command;
+ twrpback tw;
+
+ tw.adblogwrite("Starting adb backup and restore\n");
+ if (mkfifo(TW_ADB_BU_CONTROL, 0666) < 0) {
+ stringstream str;
+ str << strerror(errno);
+ tw.adblogwrite("Unable to create TW_ADB_BU_CONTROL fifo: " + str.str() + "\n");
+ unlink(TW_ADB_BU_CONTROL);
+ return -1;
+ }
+ if (mkfifo(TW_ADB_TWRP_CONTROL, 0666) < 0) {
+ stringstream str;
+ str << strerror(errno);
+ tw.adblogwrite("Unable to create TW_ADB_TWRP_CONTROL fifo: " + str.str() + "\n");
+ unlink(TW_ADB_TWRP_CONTROL);
+ unlink(TW_ADB_BU_CONTROL);
+ return -1;
+ }
+
+ command = argv[1];
+ for (index = 2; index < argc; index++) {
+ command = command + " " + argv[index];
+ }
+
+ pos = command.find("backup");
+ if (pos < 0) {
+ pos = command.find("restore");
+ }
+ command.erase(0, pos);
+ command.erase(std::remove(command.begin(), command.end(), '\''), command.end());
+ tw.adblogwrite("command: " + command + "\n");
+
+ if (command.substr(0, sizeof("backup") - 1) == "backup") {
+ tw.adblogwrite("Starting adb backup\n");
+ if (isdigit(*argv[1]))
+ tw.adbd_fd = atoi(argv[1]);
+ else
+ tw.adbd_fd = 1;
+ ret = tw.backup(command);
+ }
+ else if (command.substr(0, sizeof("restore") - 1) == "restore") {
+ tw.adblogwrite("Starting adb restore\n");
+ if (isdigit(*argv[1]))
+ tw.adbd_fd = atoi(argv[1]);
+ else
+ tw.adbd_fd = 0;
+ ret = tw.restore();
+ }
+ if (ret == 0)
+ tw.adblogwrite("Adb backup/restore completed\n");
+ else
+ tw.adblogwrite("Adb backup/restore failed\n");
+
+ if (unlink(TW_ADB_BU_CONTROL) < 0) {
+ stringstream str;
+ str << strerror(errno);
+ tw.adblogwrite("Unable to remove TW_ADB_BU_CONTROL: " + str.str());
+ }
+ unlink(TW_ADB_TWRP_CONTROL);
+ return ret;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 00:39:35 +0100