Update Magisk Manager

Close #381

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.0'
         
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -19,9 +19,16 @@ allprojects {
     repositories {
         google()
         jcenter()
+        maven { url "https://jitpack.io" }
     }
 }
 
+ext {
+    compileSdkVersion = 27
+    buildToolsVersion = "27.0.3"
+    supportLibVersion = "27.1.0"
+}
+
 task clean(type: Delete) {
     delete rootProject.buildDir
 }

build.py

@@ -120,6 +120,7 @@ def build_binary(args):
 def build_apk(args):
 	header('* Building Magisk Manager')
 
+	mkdir(os.path.join('app', 'src', 'main', 'assets'))
 	for script in ['magisk_uninstaller.sh', 'util_functions.sh']:
 		source = os.path.join('scripts', script)
 		target = os.path.join('app', 'src', 'main', 'assets', script)

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Dec 04 11:24:34 CST 2017
+#Tue Mar 27 21:17:43 CST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip

native/build.gradle

@@ -1,7 +1,8 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion rootProject.ext.compileSdkVersion
+    buildToolsVersion rootProject.ext.buildToolsVersion
 
     externalNativeBuild {
         ndkBuild {

native/jni/core/daemon.c

@@ -127,6 +127,7 @@ void daemon_init() {
 	rm_rf("/data/magisk");
 	unlink("/data/magisk.img");
 	unlink("/data/magisk_debug.log");
+	xmkdir("/data/adb", 0700);
 	chmod("/data/adb", 0700);
 
 	LOGI("* Creating /sbin overlay");
@@ -178,11 +179,6 @@ void daemon_init() {
 
 	close(root);
 
-	// Backward compatibility
-	xsymlink(DATABIN, "/data/magisk");
-	xsymlink(MAINIMG, "/data/magisk.img");
-	xsymlink(MOUNTPOINT, "/magisk");
-
 	xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
 
 	LOGI("* Mounting mirrors");

native/jni/core/socket.c

@@ -8,13 +8,15 @@
 #include "utils.h"
 #include "magisk.h"
 
+char socket_name[] = SOCKET_NAME;
+
 /* Setup the address and return socket fd */
 int setup_socket(struct sockaddr_un *sun) {
 	int fd = xsocket(AF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0);
 	memset(sun, 0, sizeof(*sun));
 	sun->sun_family = AF_LOCAL;
 	sun->sun_path[0] = '\0';
-	memcpy(sun->sun_path + 1, SOCKET_NAME, sizeof(SOCKET_NAME));
+	memcpy(sun->sun_path + 1, socket_name, sizeof(SOCKET_NAME));
 	return fd;
 }
 

native/jni/include/magisk.h

@@ -55,6 +55,7 @@ extern char *argv0;     /* For changing process name */
 #define init_applet     ((char *[]) { "magiskpolicy", "supolicy", NULL })
 
 extern int (*applet_main[]) (int, char *[]), (*init_applet_main[]) (int, char *[]);
+extern char socket_name[];   /* Workaround compiler bug pre NDK r13 */
 
 int create_links(const char *bin, const char *path);
 

native/jni/magiskboot/bootimg.c

@@ -124,10 +124,16 @@ int parse_img(const char *image, boot_img *boot) {
 				fprintf(stderr, "PXA_BOOT_HDR\n");
 				boot->hdr = malloc(sizeof(pxa_boot_img_hdr));
 				memcpy(boot->hdr, head, sizeof(pxa_boot_img_hdr));
-			} else if (memcmp(((boot_img_hdr*) head)->cmdline, NOOK_MAGIC, 12) == 0) {
-				boot->flags |= NOOK_FLAG;
-				fprintf(stderr, "NOOK_GREEN_LOADER\n");
-				head += NOOK_PRE_HEADER_SZ - 1;
+			} else if (memcmp(((boot_img_hdr*) head)->cmdline, NOOKHD_MAGIC, 12) == 0
+					|| memcmp(((boot_img_hdr*) head)->cmdline, NOOKHD_NEW_MAGIC, 26) == 0) {
+				boot->flags |= NOOKHD_FLAG;
+				fprintf(stderr, "NOOKHD_GREEN_LOADER\n");
+				head += NOOKHD_PRE_HEADER_SZ - 1;
+				continue;
+			} else if (memcmp(((boot_img_hdr*) head)->name, ACCLAIM_MAGIC, 10) == 0) {
+				boot->flags |= ACCLAIM_FLAG;
+				fprintf(stderr, "ACCLAIM_BAUWKSBOOT\n");
+				head += ACCLAIM_PRE_HEADER_SZ - 1;
 				continue;
 			} else {
 				boot->hdr = malloc(sizeof(boot_img_hdr));
@@ -162,7 +168,7 @@ int parse_img(const char *image, boot_img *boot) {
 
 			if (pos < boot->map_size) {
 				boot->tail = head + pos;
-				boot->tail_size = boot->map_size - pos;
+				boot->tail_size = boot->map_size - (boot->tail - boot->map_addr);
 			}
 
 			// Check tail info, currently only for LG Bump and Samsung SEANDROIDENFORCE
@@ -202,12 +208,12 @@ int parse_img(const char *image, boot_img *boot) {
 				fprintf(stderr, "MTK_RAMDISK_HDR\n");
 				boot->flags |= MTK_RAMDISK;
 				boot->r_hdr = malloc(sizeof(mtk_hdr));
-				memcpy(boot->r_hdr, boot->kernel, sizeof(mtk_hdr));
+				memcpy(boot->r_hdr, boot->ramdisk, sizeof(mtk_hdr));
 				fprintf(stderr, "RAMDISK [%u]\n", boot->r_hdr->size);
 				fprintf(stderr, "NAME [%s]\n", boot->r_hdr->name);
 				boot->ramdisk += 512;
 				lheader(boot, ramdisk_size, -= 512);
-				boot->k_fmt = check_fmt(boot->ramdisk, header(boot, ramdisk_size));
+				boot->r_fmt = check_fmt(boot->ramdisk, header(boot, ramdisk_size));
 			}
 
 			char fmt[16];
@@ -288,8 +294,10 @@ void repack(const char* orig_image, const char* out_image) {
 	} else if (boot.flags & BLOB_FLAG) {
 		// Skip blob header
 		write_zero(fd, sizeof(blob_hdr));
-	} else if (boot.flags & NOOK_FLAG) {
-		restore_buf(fd, boot.map_addr, NOOK_PRE_HEADER_SZ);
+	} else if (boot.flags & NOOKHD_FLAG) {
+		restore_buf(fd, boot.map_addr, NOOKHD_PRE_HEADER_SZ);
+	} else if (boot.flags & ACCLAIM_FLAG) {
+		restore_buf(fd, boot.map_addr, ACCLAIM_PRE_HEADER_SZ);
 	}
 
 	// Skip a page for header
@@ -312,13 +320,14 @@ void repack(const char* orig_image, const char* out_image) {
 		} else {
 			lheader(&boot, kernel_size, = restore(KERNEL_FILE, fd));
 		}
-		// dtb
-		if (access(DTB_FILE, R_OK) == 0) {
-			lheader(&boot, kernel_size, += restore(DTB_FILE, fd));
-		}
-		file_align();
 	}
 
+	// dtb
+	if (access(DTB_FILE, R_OK) == 0) {
+		lheader(&boot, kernel_size, += restore(DTB_FILE, fd));
+	}
+	file_align();
+
 	// ramdisk
 	ramdisk_off = lseek(fd, 0, SEEK_CUR);
 	if (boot.flags & MTK_RAMDISK) {
@@ -333,7 +342,7 @@ void repack(const char* orig_image, const char* out_image) {
 			lheader(&boot, ramdisk_size, = comp(boot.r_fmt, fd, cpio, cpio_size));
 			munmap(cpio, cpio_size);
 		} else {
-			lheader(&boot, kernel_size, = restore(KERNEL_FILE, fd));
+			lheader(&boot, ramdisk_size, = restore(RAMDISK_FILE, fd));
 		}
 		file_align();
 	}

native/jni/magiskboot/bootimg.h

@@ -130,7 +130,8 @@ typedef struct blob_hdr {
 #define LG_BUMP_FLAG    0x0040
 #define SHA256_FLAG     0x0080
 #define BLOB_FLAG       0x0100
-#define NOOK_FLAG       0x0200
+#define NOOKHD_FLAG     0x0200
+#define ACCLAIM_FLAG    0x0400
 
 typedef struct boot_img {
 	// Memory map of the whole image

native/jni/magiskboot/format.h

@@ -38,8 +38,11 @@ typedef enum {
 #define DHTB_MAGIC      "\x44\x48\x54\x42\x01\x00\x00\x00"
 #define SEANDROID_MAGIC "SEANDROIDENFORCE"
 #define TEGRABLOB_MAGIC "-SIGNED-BY-SIGNBLOB-"
-#define NOOK_MAGIC      "Green Loader"
-#define NOOK_PRE_HEADER_SZ 1048575
+#define NOOKHD_MAGIC    "Green Loader"
+#define NOOKHD_NEW_MAGIC "eMMC boot.img+secondloader"
+#define NOOKHD_PRE_HEADER_SZ 1048576
+#define ACCLAIM_MAGIC   "BauwksBoot"
+#define ACCLAIM_PRE_HEADER_SZ 262144
 
 #define SUP_LIST      ((char *[]) { "gzip", "xz", "lzma", "bzip2", "lz4", "lz4_legacy", NULL })
 #define SUP_EXT_LIST  ((char *[]) { "gz", "xz", "lzma", "bz2", "lz4", "lz4", NULL })

native/jni/magiskboot/ramdisk.c

@@ -34,18 +34,22 @@ static void cpio_patch(struct vector *v, int keepverity, int keepforceencrypt) {
 
 #define STOCK_BOOT      0x0
 #define MAGISK_PATCH    0x1
-#define OTHER_PATCH     0x2
+#define HIGH_COMPRESS   0x2
+#define OTHER_PATCH     0x3
 
 static int cpio_test(struct vector *v) {
 	const char *OTHER_LIST[] = { "sbin/launch_daemonsu.sh", "sbin/su", "init.xposed.rc", "boot/sbin/launch_daemonsu.sh", NULL };
 	const char *MAGISK_LIST[] = { ".backup/.magisk", "init.magisk.rc", "overlay/init.magisk.rc", NULL };
 
 	for (int i = 0; OTHER_LIST[i]; ++i)
-		if (cpio_find(v, OTHER_LIST[i]) > 0)
+		if (cpio_find(v, OTHER_LIST[i]) >= 0)
 			return OTHER_PATCH;
 
+	if (cpio_find(v, "ramdisk.cpio.xz") >= 0)
+		return HIGH_COMPRESS;
+
 	for (int i = 0; MAGISK_LIST[i]; ++i)
-		if (cpio_find(v, MAGISK_LIST[i]) > 0)
+		if (cpio_find(v, MAGISK_LIST[i]) >= 0)
 			return MAGISK_PATCH;
 
 	return STOCK_BOOT;

native/jni/magiskhide/magiskhide.c

@@ -54,6 +54,9 @@ void launch_magiskhide(int client) {
 			write_int(client, LOGD_DISABLED);
 			close(client);
 		}
+		setprop(MAGISKHIDE_PROP, "0");
+		// Remove without actually removing persist props
+		deleteprop2(MAGISKHIDE_PROP, 0);
 		return;
 	}
 

native/jni/magiskhide/magiskhide.h

@@ -4,7 +4,6 @@
 #include <pthread.h>
 
 #define TERM_THREAD SIGUSR1
-#define HIDE_DONE   SIGUSR2
 
 // Kill process
 void kill_proc(int pid);

native/jni/magiskhide/proc_monitor.c

@@ -20,7 +20,7 @@
 #include "magiskhide.h"
 
 static char init_ns[32], zygote_ns[2][32], cache_block[256];
-static int hide_queue = 0, zygote_num, has_cache = 1, pipefd[2] = { -1, -1 };
+static int zygote_num, has_cache = 1, pipefd[2] = { -1, -1 };
 
 // Workaround for the lack of pthread_cancel
 static void term_thread(int sig) {
@@ -38,17 +38,6 @@ static void term_thread(int sig) {
 	pthread_exit(NULL);
 }
 
-static void hide_done(int sig) {
-	--hide_queue;
-	if (hide_queue == 0) {
-		xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
-		xsymlink(DATABIN, "/data/magisk");
-		xsymlink(MAINIMG, "/data/magisk.img");
-		xsymlink(MOUNTPOINT, "/magisk");
-		xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
-	}
-}
-
 static int read_namespace(const int pid, char* target, const size_t size) {
 	char path[32];
 	snprintf(path, sizeof(path), "/proc/%d/ns/mnt", pid);
@@ -140,9 +129,6 @@ exit:
 	kill(pid, SIGCONT);
 	// Free up memory
 	vec_destroy(&mount_list);
-	// Wait a while and link it back
-	sleep(10);
-	kill(ppid, HIDE_DONE);
 	_exit(0);
 }
 
@@ -151,7 +137,6 @@ void proc_monitor() {
 	sigset_t block_set;
 	sigemptyset(&block_set);
 	sigaddset(&block_set, TERM_THREAD);
-	sigaddset(&block_set, HIDE_DONE);
 	pthread_sigmask(SIG_UNBLOCK, &block_set, NULL);
 
 	// Register the cancel signal
@@ -159,8 +144,6 @@ void proc_monitor() {
 	memset(&act, 0, sizeof(act));
 	act.sa_handler = term_thread;
 	sigaction(TERM_THREAD, &act, NULL);
-	act.sa_handler = hide_done;
-	sigaction(HIDE_DONE, &act, NULL);
 
 	cache_block[0] = '\0';
 
@@ -241,14 +224,6 @@ void proc_monitor() {
 
 				LOGI("proc_monitor: %s (PID=%d ns=%s)\n", processName, pid, ns);
 
-				xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
-				unlink("/magisk");
-				unlink("/data/magisk");
-				unlink("/data/magisk.img");
-				unlink(MAGISKRC);
-				xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
-				++hide_queue;
-
 				/*
 				 * The setns system call do not support multithread processes
 				 * We have to fork a new process, setns, then do the unmounts

native/jni/resetprop/resetprop.cpp

@@ -2,52 +2,6 @@
  *
  * Copyright 2016 nkk71     <nkk71x@gmail.com>
  * Copyright 2016 topjohnwu <topjohnwu@gmail.com>
- *
- * Info:
- *
- * all changes are in
- *
- * bionic/libc/bionic/system_properties.cpp
- *
- * Functions that need to be patched/added in system_properties.cpp
- *
- * int __system_properties_init2()
- *     on android 7, first tear down the everything then let it initialize again:
- *         if (initialized) {
- *             //list_foreach(contexts, [](context_node* l) { l->reset_access(); });
- *             //return 0;
- *             free_and_unmap_contexts();
- *             initialized = false;
- *         }
- *
- *
- * static prop_area* map_prop_area(const char* filename, bool is_legacy)
- *     we dont want this read only so change: 'O_RDONLY' to 'O_RDWR'
- *
- * static prop_area* map_fd_ro(const int fd)
- *     we dont want this read only so change: 'PROT_READ' to 'PROT_READ | PROT_WRITE'
- *
- *
- * Copy the code of prop_info *prop_area::find_property, and modify to delete props
- * const prop_info *prop_area::find_property_and_del(prop_bt *const trie, const char *name)
- * {
- *    ...
- *    ...  Do not alloc a new prop_bt here, remove all code involve alloc_if_needed
- *    ...
- *
- *     if (prop_offset != 0) {
- *         atomic_store_explicit(&current->prop, 0, memory_order_release); // Add this line to nullify the prop entry
- *         return to_prop_info(&current->prop);
- *     } else {
- *
- *    ....
- * }
- *
- *
- * by patching just those functions directly, all other functions should be ok
- * as is.
- *
- *
  */
 
 #include <stdio.h>

native/jni/resetprop/system_properties.cpp

@@ -153,7 +153,7 @@ class prop_area {
   }
 
   const prop_info* find(const char* name);
-  bool del(const char *name);               // resetprop add
+  bool del(const char *name);  /* resetprop add */
   bool add(const char* name, unsigned int namelen, const char* value, unsigned int valuelen);
 
   bool foreach (void (*propfn)(const prop_info* pi, void* cookie), void* cookie);
@@ -184,7 +184,7 @@ class prop_area {
   const prop_info* find_property(prop_bt* const trie, const char* name, uint32_t namelen,
                                  const char* value, uint32_t valuelen, bool alloc_if_needed);
 
-  bool find_property_and_del(prop_bt *const trie, const char *name);    // resetprop add
+  bool find_property_and_del(prop_bt *const trie, const char *name);  /* resetprop add */
 
   bool foreach_property(prop_bt* const trie, void (*propfn)(const prop_info* pi, void* cookie),
                         void* cookie);
@@ -283,7 +283,8 @@ static prop_area* map_prop_area_rw(const char* filename, const char* context,
   return pa;
 }
 
-static prop_area* map_fd_ro(const int fd) {
+// resetprop: map the memory as rw
+static prop_area* map_fd_rw(const int fd) {
   struct stat fd_stat;
   if (fstat(fd, &fd_stat) < 0) {
     return nullptr;
@@ -298,7 +299,7 @@ static prop_area* map_fd_ro(const int fd) {
   pa_size = fd_stat.st_size;
   pa_data_size = pa_size - sizeof(prop_area);
 
-  void* const map_result = mmap(nullptr, pa_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);  // resetprop: add PROT_WRITE
+  void* const map_result = mmap(nullptr, pa_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);  /* resetprop: add PROT_WRITE */
   if (map_result == MAP_FAILED) {
     return nullptr;
   }
@@ -313,10 +314,10 @@ static prop_area* map_fd_ro(const int fd) {
 }
 
 static prop_area* map_prop_area(const char* filename) {
-  int fd = open(filename, O_CLOEXEC | O_NOFOLLOW | O_RDWR);       // resetprop: O_RDONLY -> O_RDWR
+  int fd = open(filename, O_CLOEXEC | O_NOFOLLOW | O_RDWR);  /* resetprop: O_RDONLY -> O_RDWR */
   if (fd == -1) return nullptr;
 
-  prop_area* map_result = map_fd_ro(fd);
+  prop_area* map_result = map_fd_rw(fd);
   close(fd);
 
   return map_result;
@@ -530,7 +531,7 @@ bool prop_area::find_property_and_del(prop_bt* const trie, const char* name) {
 
   uint_least32_t prop_offset = atomic_load_explicit(&current->prop, memory_order_relaxed);
   if (prop_offset != 0) {
-    atomic_store_explicit(&current->prop, 0, memory_order_release);     // resetprop: nullify the offset to delete the prop
+    atomic_store_explicit(&current->prop, 0, memory_order_release);
     return true;
   } else {
     return false;
@@ -1116,16 +1117,16 @@ static bool initialize_properties() {
     if (!initialize_properties_from_file("/system/etc/selinux/plat_property_contexts")) {
       return false;
     }
-    if (!initialize_properties_from_file("/vendor/etc/selinux/nonplat_property_contexts")) {
-      return false;
-    }
+    // Don't check for failure here, so we always have a sane list of properties.
+    // E.g. In case of recovery, the vendor partition will not have mounted and we
+    // still need the system / platform properties to function.
+    initialize_properties_from_file("/vendor/etc/selinux/nonplat_property_contexts") ||
+            initialize_properties_from_file("/vendor/etc/selinux/vendor_property_contexts");
   } else {
     if (!initialize_properties_from_file("/plat_property_contexts")) {
       return false;
     }
-    if (!initialize_properties_from_file("/nonplat_property_contexts")) {
-      return false;
-    }
+    initialize_properties_from_file("/nonplat_property_contexts");
   }
 
   return true;

native/jni/utils/img.c

@@ -17,7 +17,7 @@ static int e2fsck(const char *img) {
 	// Check and repair ext4 image
 	char buffer[128];
 	int pid, fd = -1;
-	pid = exec_command(1, &fd, NULL, "e2fsck", "-yf", img, NULL);
+	pid = exec_command(1, &fd, NULL, "/system/bin/e2fsck", "-yf", img, NULL);
 	if (pid < 0)
 		return 1;
 	while (fdgets(buffer, sizeof(buffer), fd))
@@ -58,11 +58,13 @@ int create_img(const char *img, int size) {
 	LOGI("Create %s with size %dM\n", img, size);
 	int ret;
 
-	char buffer[16];
-	snprintf(buffer, sizeof(buffer), "%dM", size);
-	ret = exec_command_sync("make_ext4fs", "-l", buffer, img, NULL);
-	if (ret < 0)
-		return 1;
+	char size_str[16];
+	snprintf(size_str, sizeof(size_str), "%dM", size);
+	ret = exec_command_sync("/system/bin/make_ext4fs", "-b", "4096", "-l", size_str, img, NULL);
+	if (ret < 0) {
+		// On Android P there is no make_ext4fs, use mke2fs
+		ret = exec_command_sync("/system/bin/mke2fs", "-b", "4096", "-t", "ext4", img, size_str, NULL);
+	}
 	return ret;
 }
 
@@ -71,7 +73,7 @@ int get_img_size(const char *img, int *used, int *total) {
 		return 1;
 	char buffer[PATH_MAX];
 	int pid, fd = -1, status = 1;
-	pid = exec_command(1, &fd, NULL, "e2fsck", "-n", img, NULL);
+	pid = exec_command(1, &fd, NULL, "/system/bin/e2fsck", "-n", img, NULL);
 	if (pid < 0)
 		return 1;
 	while (fdgets(buffer, sizeof(buffer), fd)) {
@@ -103,7 +105,7 @@ int resize_img(const char *img, int size) {
 	char buffer[128];
 	int pid, fd = -1, used, total;
 	snprintf(buffer, sizeof(buffer), "%dM", size);
-	pid = exec_command(1, &fd, NULL, "resize2fs", img, buffer, NULL);
+	pid = exec_command(1, &fd, NULL, "/system/bin/resize2fs", img, buffer, NULL);
 	if (pid < 0)
 		return 1;
 	while (fdgets(buffer, sizeof(buffer), fd))

native/jni/utils/misc.c

@@ -280,7 +280,7 @@ static int v_exec_command(int err, int *fd, void (*setupenv)(struct vector*), co
 	}
 
 	execvpe(argv0, (char **) vec_entry(&args), envp);
-	PLOGE("execvpe");
+	PLOGE("execvpe %s", argv0);
 	return -1;
 }
 

scripts/boot_patch.sh

@@ -91,9 +91,7 @@ case $? in
     abort "! Unable to unpack boot image"
     ;;
   2 )
-    ui_print "! Insufficient boot partition size detected"
     HIGHCOMP=true
-    ui_print "- Enable high compression mode"
     ;;
   3 )
     ui_print "- ChromeOS boot image detected"
@@ -114,6 +112,7 @@ esac
 
 # Test patch status and do restore, after this section, ramdisk.cpio.orig is guaranteed to exist
 ui_print "- Checking ramdisk status"
+MAGISK_PATCHED=false
 ./magiskboot --cpio ramdisk.cpio test
 case $? in
   0 )  # Stock boot
@@ -125,18 +124,32 @@ case $? in
     cp -af ramdisk.cpio ramdisk.cpio.orig
     ;;
   1 )  # Magisk patched
-    ui_print "- Magisk patched image detected"
-    # Find SHA1 of stock boot image
-    [ -z $SHA1 ] && SHA1=`./magiskboot --cpio ramdisk.cpio sha1 2>/dev/null`
-    ./magiskboot --cpio ramdisk.cpio restore
-    cp -af ramdisk.cpio ramdisk.cpio.orig
+    MAGISK_PATCHED=true
+    HIGHCOMP=false
     ;;
-  2 ) # Other patched
+  2 ) # High compression mode
+    MAGISK_PATCHED=true
+    HIGHCOMP=true
+    ;;
+  3 ) # Other patched
     ui_print "! Boot image patched by other programs"
     abort "! Please restore stock boot image"
     ;;
 esac
 
+if $MAGISK_PATCHED; then
+  ui_print "- Magisk patched image detected"
+  # Find SHA1 of stock boot image
+  [ -z $SHA1 ] && SHA1=`./magiskboot --cpio ramdisk.cpio sha1 2>/dev/null`
+  ./magiskboot --cpio ramdisk.cpio restore
+  cp -af ramdisk.cpio ramdisk.cpio.orig
+fi
+
+if $HIGHCOMP; then
+  ui_print "! Insufficient boot partition size detected"
+  ui_print "- Enable high compression mode"
+fi
+
 ##########################################################################################
 # Ramdisk patches
 ##########################################################################################

scripts/magisk_uninstaller.sh

@@ -73,7 +73,7 @@ case $? in
     ui_print "- Stock boot image detected"
     abort "! Magisk is not installed!"
     ;;
-  1 )  # Magisk patched
+  1|2 )  # Magisk patched
     ui_print "- Magisk patched image detected"
     # Find SHA1 of stock boot image
     [ -z $SHA1 ] && SHA1=`./magiskboot --cpio ramdisk.cpio sha1 2>/dev/null`
@@ -89,7 +89,7 @@ case $? in
       flash_boot_image new-boot.img "$BOOTIMAGE"
     fi
     ;;
-  2 ) # Other patched
+  3 ) # Other patched
     ui_print "! Boot image patched by other programs"
     abort "! Cannot uninstall"
     ;;
@@ -103,4 +103,4 @@ rm -rf  /cache/*magisk* /cache/unblock /data/*magisk* /data/cache/*magisk* /data
         /data/user*/*/magisk.db /data/user*/*/com.topjohnwu.magisk /data/user*/*/.tmp.magisk.config \
         /data/adb/*magisk* 2>/dev/null
 
-$BOOTMODE && reboot
+$BOOTMODE && /system/bin/reboot

snet/build.gradle

@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    compileSdkVersion rootProject.ext.compileSdkVersion
+    buildToolsVersion rootProject.ext.buildToolsVersion
 
     defaultConfig {
         applicationId "com.topjohnwu.snet"
         minSdkVersion 21
-        targetSdkVersion 27
+        targetSdkVersion rootProject.ext.compileSdkVersion
         versionCode 1
         versionName "1.0"
     }
@@ -20,10 +20,6 @@ android {
     }
 }
 
-repositories {
-    google()
-}
-
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'com.google.android.gms:play-services-safetynet:7.0.0'  /* The oldest version */

utils/src/main/java/com/topjohnwu/utils/SignAPK.java

@@ -494,6 +494,7 @@ public class SignAPK {
         outputStream.write(total_size & 0xff);
         outputStream.write((total_size >> 8) & 0xff);
         temp.writeTo(outputStream);
+        outputStream.close();
     }
     private static void signFile(Manifest manifest, JarMap inputJar,
                                  X509Certificate publicKey, PrivateKey privateKey,