Move MagiskSU sources to native/jni/su

2025-06-13 05:37:47 +02:00 · 2018-07-18 18:23:36 +08:00
parent 6ccc5f3788
commit cf211e26f4
7 changed files with 0 additions and 0 deletions
--- a/native/jni/su/activity.c
+++ b/native/jni/su/activity.c
@ -0,0 +1,141 @@
+/*
+** Copyright 2017, John Wu (@topjohnwu)
+** Copyright 2010, Adam Shanks (@ChainsDD)
+** Copyright 2008, Zinx Verituse (@zinxv)
+**
+*/
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+#include "magisk.h"
+#include "su.h"
+
+/* intent actions */
+#define ACTION_REQUEST "%s/" REQUESTOR_PREFIX ".RequestActivity"
+#define ACTION_RESULT  "%s/" REQUESTOR_PREFIX ".SuReceiver"
+
+#define AM_PATH "/system/bin/app_process", "/system/bin", "com.android.commands.am.Am"
+
+static char *get_command(const struct su_request *to) {
+	if (to->command)
+		return to->command;
+	if (to->shell)
+		return to->shell;
+	return DEFAULT_SHELL;
+}
+
+static void silent_run(char* const args[]) {
+	set_identity(0);
+	if (fork())
+		return;
+	int zero = open("/dev/zero", O_RDONLY | O_CLOEXEC);
+	dup2(zero, 0);
+	int null = open("/dev/null", O_WRONLY | O_CLOEXEC);
+	dup2(null, 1);
+	dup2(null, 2);
+	setenv("CLASSPATH", "/system/framework/am.jar", 1);
+	execv(args[0], args);
+	PLOGE("exec am");
+	_exit(EXIT_FAILURE);
+}
+
+static int setup_user(struct su_context *ctx, char* user) {
+	switch (ctx->info->dbs.v[SU_MULTIUSER_MODE]) {
+	case MULTIUSER_MODE_OWNER_ONLY:   /* Should already be denied if not owner */
+	case MULTIUSER_MODE_OWNER_MANAGED:
+		sprintf(user, "%d", 0);
+		return ctx->info->uid / 100000;
+	case MULTIUSER_MODE_USER:
+		sprintf(user, "%d", ctx->info->uid / 100000);
+		break;
+	}
+	return 0;
+}
+
+void app_send_result(struct su_context *ctx, policy_t policy) {
+	char fromUid[16];
+	if (ctx->info->dbs.v[SU_MULTIUSER_MODE] == MULTIUSER_MODE_OWNER_MANAGED)
+		sprintf(fromUid, "%d", ctx->info->uid % 100000);
+	else
+		sprintf(fromUid, "%d", ctx->info->uid);
+
+	char toUid[16];
+	sprintf(toUid, "%d", ctx->to.uid);
+
+	char pid[16];
+	sprintf(pid, "%d", ctx->pid);
+
+	char user[16];
+	int notify = setup_user(ctx, user);
+
+	char activity[128];
+	sprintf(activity, ACTION_RESULT, ctx->info->str.s[SU_MANAGER]);
+
+	// Send notice to manager, enable logging
+	char *result_command[] = {
+		AM_PATH, "broadcast", "-n",
+		activity,
+		"--user", user,
+		"--ei", "mode", "0",
+		"--ei", "from.uid", fromUid,
+		"--ei", "to.uid", toUid,
+		"--ei", "pid", pid,
+		"--es", "command", get_command(&ctx->to),
+		"--es", "action", policy == ALLOW ? "allow" : "deny",
+		NULL
+	};
+	silent_run(result_command);
+
+	// Send notice to user (if needed) to create toasts
+	if (notify) {
+		sprintf(fromUid, "%d", ctx->info->uid);
+		sprintf(user, "%d", notify);
+		char *notify_command[] = {
+			AM_PATH, "broadcast", "-n",
+			activity,
+			"--user", user,
+			"--ei", "mode", "1",
+			"--ei", "from.uid", fromUid,
+			"--es", "action", policy == ALLOW ? "allow" : "deny",
+			NULL
+		};
+		silent_run(notify_command);
+	}
+}
+
+void app_send_request(struct su_context *ctx) {
+	char user[16];
+	int notify = setup_user(ctx, user);
+
+	char activity[128];
+	sprintf(activity, ACTION_REQUEST, ctx->info->str.s[SU_MANAGER]);
+
+	char *request_command[] = {
+		AM_PATH, "start", "-n",
+		activity,
+		"--user", user,
+		"--es", "socket", ctx->sock_path,
+		"--ez", "timeout", notify ? "false" : "true",
+		NULL
+	};
+	silent_run(request_command);
+
+	// Send notice to user to tell them root is managed by owner
+	if (notify) {
+		sprintf(user, "%d", notify);
+		sprintf(activity, ACTION_RESULT, ctx->info->str.s[SU_MANAGER]);
+		char *notify_command[] = {
+			AM_PATH, "broadcast", "-n",
+			activity,
+			"--user", user,
+			"--ei", "mode", "2",
+			NULL
+		};
+		silent_run(notify_command);
+	}
+}