forked from MarcoBuster/Magisk
143 lines
3.2 KiB
C++
143 lines
3.2 KiB
C++
/*
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** Copyright 2018, John Wu (@topjohnwu)
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** Copyright 2010, Adam Shanks (@ChainsDD)
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** Copyright 2008, Zinx Verituse (@zinxv)
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**
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <magisk.h>
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#include <daemon.h>
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#include <utils.h>
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#include "su.h"
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#define BROADCAST_BOOT_COMPLETED \
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"/system/bin/app_process", "/system/bin", "com.android.commands.am.Am", \
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"broadcast", nullptr, nullptr, "-a", "android.intent.action.BOOT_COMPLETED", \
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"-f", "0x00000020"
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static inline const char *get_command(const struct su_request *to) {
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if (to->command[0])
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return to->command;
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if (to->shell[0])
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return to->shell;
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return DEFAULT_SHELL;
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}
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static void silent_run(const char **args, struct su_info *info) {
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char component[128];
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if (SDK_INT >= 22) {
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args[4] = "-p";
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args[5] = info->str[SU_MANAGER];
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} else {
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sprintf(component, "%s/a.h", info->str[SU_MANAGER]);
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args[4] = "-n";
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args[5] = component;
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}
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exec_t exec {
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.pre_exec = []() -> void {
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int null = xopen("/dev/null", O_WRONLY | O_CLOEXEC);
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dup2(null, STDOUT_FILENO);
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dup2(null, STDERR_FILENO);
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setenv("CLASSPATH", "/system/framework/am.jar", 1);
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},
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.fork = fork_dont_care,
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.argv = args
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};
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exec_command(exec);
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}
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static void setup_user(char *user, struct su_info *info) {
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switch (info->cfg[SU_MULTIUSER_MODE]) {
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case MULTIUSER_MODE_OWNER_ONLY:
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case MULTIUSER_MODE_OWNER_MANAGED:
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sprintf(user, "%d", 0);
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break;
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case MULTIUSER_MODE_USER:
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sprintf(user, "%d", info->uid / 100000);
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break;
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}
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}
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void app_log(struct su_context *ctx) {
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char user[8];
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setup_user(user, ctx->info);
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char fromUid[8];
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sprintf(fromUid, "%d",
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ctx->info->cfg[SU_MULTIUSER_MODE] == MULTIUSER_MODE_OWNER_MANAGED ?
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ctx->info->uid % 100000 : ctx->info->uid);
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char toUid[8];
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sprintf(toUid, "%d", ctx->req.uid);
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char pid[8];
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sprintf(pid, "%d", ctx->pid);
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char policy[2];
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sprintf(policy, "%d", ctx->info->access.policy);
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const char *cmd[] = {
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BROADCAST_BOOT_COMPLETED,
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"--user", user,
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"--es", "action", "log",
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"--ei", "from.uid", fromUid,
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"--ei", "to.uid", toUid,
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"--ei", "pid", pid,
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"--ei", "policy", policy,
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"--es", "command", get_command(&ctx->req),
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"--ez", "notify", ctx->info->access.notify ? "true" : "false",
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nullptr
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};
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silent_run(cmd, ctx->info);
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}
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void app_notify(struct su_context *ctx) {
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char user[8];
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setup_user(user, ctx->info);
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char fromUid[8];
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sprintf(fromUid, "%d",
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ctx->info->cfg[SU_MULTIUSER_MODE] == MULTIUSER_MODE_OWNER_MANAGED ?
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ctx->info->uid % 100000 : ctx->info->uid);
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char policy[2];
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sprintf(policy, "%d", ctx->info->access.policy);
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const char *cmd[] = {
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BROADCAST_BOOT_COMPLETED,
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"--user", user,
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"--es", "action", "notify",
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"--ei", "from.uid", fromUid,
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"--ei", "policy", policy,
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nullptr
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};
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silent_run(cmd, ctx->info);
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}
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void app_connect(const char *socket, struct su_info *info) {
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char user[8];
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setup_user(user, info);
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const char *cmd[] = {
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BROADCAST_BOOT_COMPLETED,
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"--user", user,
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"--es", "action", "request",
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"--es", "socket", socket,
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nullptr
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};
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silent_run(cmd, info);
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}
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void socket_send_request(int fd, struct su_info *info) {
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write_key_token(fd, "uid", info->uid);
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write_string_be(fd, "eof");
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}
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