mirror of
https://github.com/topjohnwu/Magisk.git
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110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
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/*
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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 "su.h"
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#define AM_PATH "/system/bin/app_process", "/system/bin", "com.android.commands.am.Am"
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static char *get_command(const struct su_request *to) {
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if (to->command)
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return to->command;
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if (to->shell)
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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(char * const args[]) {
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set_identity(0);
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if (fork())
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return;
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int zero = open("/dev/zero", O_RDONLY | O_CLOEXEC);
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dup2(zero, 0);
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int null = open("/dev/null", O_WRONLY | O_CLOEXEC);
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dup2(null, 1);
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dup2(null, 2);
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setenv("CLASSPATH", "/system/framework/am.jar", 1);
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execv(args[0], args);
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PLOGE("exec am");
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_exit(EXIT_FAILURE);
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}
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static void setup_user(char *user) {
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switch (su_ctx->info->dbs.v[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", su_ctx->info->uid / 100000);
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break;
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}
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}
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void app_log() {
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char user[8];
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setup_user(user);
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char fromUid[8];
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sprintf(fromUid, "%d",
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su_ctx->info->dbs.v[SU_MULTIUSER_MODE] == MULTIUSER_MODE_OWNER_MANAGED ?
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su_ctx->info->uid % 100000 : su_ctx->info->uid);
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char toUid[8];
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sprintf(toUid, "%d", su_ctx->to.uid);
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char pid[8];
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sprintf(pid, "%d", su_ctx->pid);
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char policy[2];
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sprintf(policy, "%d", su_ctx->info->access.policy);
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char *cmd[] = {
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AM_PATH, "broadcast",
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"-a", "android.intent.action.BOOT_COMPLETED",
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"-p", su_ctx->info->str.s[SU_MANAGER],
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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(&su_ctx->to),
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NULL
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};
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silent_run(cmd);
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}
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void app_connect(const char *socket) {
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char user[8];
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setup_user(user);
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char *cmd[] = {
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AM_PATH, "broadcast",
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"-a", "android.intent.action.BOOT_COMPLETED",
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"-p", su_ctx->info->str.s[SU_MANAGER],
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"--user", user,
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"--es", "action", "request",
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"--es", "socket", (char *) socket,
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NULL
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};
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silent_run(cmd);
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}
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void socket_send_request(int fd) {
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write_key_token(fd, "uid", su_ctx->info->uid);
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write_string_be(fd, "eof");
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}
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