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Change stock boot image SHA1 backup method

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This commit is contained in:
topjohnwu 2018-11-15 00:33:20 -05:00
parent 89e0be0099
commit 83ae66daea
4 changed files with 38 additions and 52 deletions
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5
app/src/full/res/raw/utils.sh
View File

@ -79,8 +79,9 @@ mm_patch_dtbo() {
}
restore_imgs() {
local SHA1=`cat /.backup/.sha1`
[ -z $SHA1 ] && local SHA1=`grep_prop #STOCKSHA1`
local SHA1=`grep_prop SHA1 /.backup/.magisk`
[ -z $SHA1 ] && local SHA1=`cat /.backup/.sha1`
[ -z $SHA1 ] && local SHA1=`grep_prop #STOCKSHA1 /.backup/.magisk`
[ -z $SHA1 ] && return 1
local STOCKBOOT=/data/stock_boot_${SHA1}.img.gz
local STOCKDTBO=/data/stock_dtbo.img.gz

10
native/jni/magiskboot/main.cpp
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@ -57,18 +57,12 @@ static void usage(char *arg0) {
" 0:stock 1:Magisk 2:unsupported (phh, SuperSU, Xposed)\n"
" patch KEEPVERITY KEEPFORCEENCRYPT\n"
" Ramdisk patches. KEEP**** are boolean values\n"
" backup ORIG [SHA1]\n"
" backup ORIG\n"
" Create ramdisk backups from ORIG\n"
" SHA1 of stock boot image is optional\n"
" restore\n"
" Restore ramdisk from ramdisk backup stored within incpio\n"
" magisk ORIG KEEPVERITY KEEPFORCEENCRYPT [SHA1]\n"
" Do Magisk patches and backups all in one step\n"
" Create ramdisk backups from ORIG\n"
" KEEP**** are boolean values\n"
" SHA1 of stock boot image is optional\n"
" sha1\n"
" Print stock boot SHA1 if previously stored\n"
" Print stock boot SHA1 if previously backed up in ramdisk\n"
"\n"
" --dtb-<cmd> <dtb>\n"
" Do dtb related cmds to <dtb> (modifications are done directly)\n"

65
native/jni/magiskboot/ramdisk.cpp
View File

@ -13,7 +13,7 @@ public:
int test();
char * sha1();
void restore();
void backup(Vector<cpio_entry*> &bak, const char *orig, const char *sha1);
void backup(const char *orig);
};
void magisk_cpio::patch(bool keepverity, bool keepforceencrypt) {
@ -64,16 +64,26 @@ int magisk_cpio::test() {
return STOCK_BOOT;
}
#define for_each_line(line, buf, size) \
for (line = (char *) buf; line < (char *) buf + size && line[0]; line = strchr(line + 1, '\n') + 1)
char *magisk_cpio::sha1() {
char sha1[41];
char *line;
for (auto &e : arr) {
if (!e) continue;
if (e->filename == "init.magisk.rc" || e->filename == "overlay/init.magisk.rc") {
for (char *pos = (char *) e->data; pos < (char *) e->data + e->filesize;
pos = strchr(pos + 1, '\n') + 1) {
if (memcmp(pos, "# STOCKSHA1=", 12) == 0) {
pos += 12;
memcpy(sha1, pos, 40);
for_each_line(line, e->data, e->filesize) {
if (strncmp(line, "#STOCKSHA1=", 11) == 0) {
strncpy(sha1, line + 12, 40);
sha1[40] = '\0';
return strdup(sha1);
}
}
} else if (e->filename == ".backup/.magisk") {
for_each_line(line, e->data, e->filesize) {
if (strncmp(line, "SHA1=", 5) == 0) {
strncpy(sha1, line + 5, 40);
sha1[40] = '\0';
return strdup(sha1);
}
@ -109,8 +119,9 @@ void magisk_cpio::restore() {
rm("magisk", true);
}
void magisk_cpio::backup(Vector<cpio_entry*> &bak, const char *orig, const char *sha1) {
cpio_entry *m, *n, *rem, *cksm;
void magisk_cpio::backup(const char *orig) {
Vector<cpio_entry*> bak;
cpio_entry *m, *n, *rem;
char buf[PATH_MAX];
m = new cpio_entry();
@ -122,16 +133,6 @@ void magisk_cpio::backup(Vector<cpio_entry*> &bak, const char *orig, const char
rem->filename = ".backup/.rmlist";
rem->mode = S_IFREG;
if (sha1) {
fprintf(stderr, "Save SHA1: [%s] -> [.backup/.sha1]\n", sha1);
cksm = new cpio_entry();
cksm->filename = ".backup/.sha1";
cksm->mode = S_IFREG;
cksm->data = strdup(sha1);
cksm->filesize = strlen(sha1) + 1;
bak.push_back(cksm);
}
magisk_cpio o(orig);
// Remove possible backups in original ramdisk
@ -193,6 +194,9 @@ void magisk_cpio::backup(Vector<cpio_entry*> &bak, const char *orig, const char
bak.push_back(rem);
else
delete rem;
if (bak.size() > 1)
insert(bak);
}
@ -224,29 +228,10 @@ int cpio_commands(int argc, char *argv[]) {
cpio.restore();
} else if (strcmp(cmdv[0], "sha1") == 0) {
char *sha1 = cpio.sha1();
if (sha1)
printf("%s\n", sha1);
free(sha1);
if (sha1) printf("%s\n", sha1);
return 0;
} else if (cmdc >= 2 && strcmp(cmdv[0], "backup") == 0) {
Vector<cpio_entry*> bak;
cpio.backup(bak, cmdv[1], cmdv[2]);
cpio.insert(bak);
} else if (cmdc >= 4 && strcmp(cmdv[0], "magisk") == 0) {
cpio.patch(strcmp(cmdv[2], "true") == 0, strcmp(cmdv[3], "true") == 0);
Vector<cpio_entry*> bak;
cpio.backup(bak, cmdv[1], cmdv[4]);
auto e = new cpio_entry();
e->filename = ".backup/.magisk";
e->mode = S_IFREG;
e->data = xmalloc(50);
snprintf((char *) e->data, 50, "KEEPVERITY=%s\nKEEPFORCEENCRYPT=%s\n", cmdv[2], cmdv[3]);
e->filesize = strlen((char *) e->data) + 1;
cpio.insert(bak);
cpio.insert(e);
cpio.backup(cmdv[1]);
} else if (cmdc >= 2 && strcmp(cmdv[0], "rm") == 0) {
bool r = cmdc > 2 && strcmp(cmdv[1], "-r") == 0;
cpio.rm(cmdv[1 + r], r);
@ -256,7 +241,7 @@ int cpio_commands(int argc, char *argv[]) {
cpio.patch(strcmp(cmdv[1], "true") == 0, strcmp(cmdv[2], "true") == 0);
} else if (strcmp(cmdv[0], "extract") == 0) {
if (cmdc == 3) {
return cpio.extract(cmdv[1], cmdv[2]);
return !cpio.extract(cmdv[1], cmdv[2]);
} else {
cpio.extract();
return 0;

10
scripts/boot_patch.sh
View File

@ -125,11 +125,17 @@ esac
ui_print "- Patching ramdisk"
echo "KEEPVERITY=$KEEPVERITY" > config
echo "KEEPFORCEENCRYPT=$KEEPFORCEENCRYPT" >> config
[ ! -z $SHA1 ] && echo "SHA1=$SHA1" >> config
./magiskboot --cpio ramdisk.cpio \
"add 750 init magiskinit" \
"magisk ramdisk.cpio.orig $KEEPVERITY $KEEPFORCEENCRYPT $SHA1"
"patch $KEEPVERITY $KEEPFORCEENCRYPT" \
"backup ramdisk.cpio.orig" \
"add 000 .backup/.magisk config"
rm -f ramdisk.cpio.orig
rm -f ramdisk.cpio.orig config
##########################################################################################
# Binary patches