forked from MarcoBuster/Magisk
145 lines
3.5 KiB
C++
145 lines
3.5 KiB
C++
#include <unistd.h>
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include <magisk.hpp>
|
|
#include <utils.hpp>
|
|
#include <selinux.hpp>
|
|
|
|
using namespace std;
|
|
|
|
#define BBEXEC_CMD bbpath(), "sh"
|
|
|
|
static const char *bbpath() {
|
|
static string path;
|
|
if (path.empty())
|
|
path = MAGISKTMP + "/" BBPATH "/busybox";
|
|
return path.data();
|
|
}
|
|
|
|
static void set_script_env() {
|
|
setenv("ASH_STANDALONE", "1", 1);
|
|
char new_path[4096];
|
|
sprintf(new_path, "%s:%s", getenv("PATH"), MAGISKTMP.data());
|
|
setenv("PATH", new_path, 1);
|
|
};
|
|
|
|
void exec_script(const char *script) {
|
|
exec_t exec {
|
|
.pre_exec = set_script_env,
|
|
.fork = fork_no_zombie
|
|
};
|
|
exec_command_sync(exec, BBEXEC_CMD, script);
|
|
}
|
|
|
|
void exec_common_scripts(const char *stage) {
|
|
LOGI("* Running %s.d scripts\n", stage);
|
|
char path[4096];
|
|
char *name = path + sprintf(path, SECURE_DIR "/%s.d", stage);
|
|
auto dir = xopen_dir(path);
|
|
if (!dir)
|
|
return;
|
|
|
|
int dfd = dirfd(dir.get());
|
|
bool pfs = stage == "post-fs-data"sv;
|
|
*(name++) = '/';
|
|
|
|
for (dirent *entry; (entry = xreaddir(dir.get()));) {
|
|
if (entry->d_type == DT_REG) {
|
|
if (faccessat(dfd, entry->d_name, X_OK, 0) != 0)
|
|
continue;
|
|
LOGI("%s.d: exec [%s]\n", stage, entry->d_name);
|
|
strcpy(name, entry->d_name);
|
|
exec_t exec {
|
|
.pre_exec = set_script_env,
|
|
.fork = pfs ? fork_no_zombie : fork_dont_care
|
|
};
|
|
if (pfs)
|
|
exec_command_sync(exec, BBEXEC_CMD, path);
|
|
else
|
|
exec_command(exec, BBEXEC_CMD, path);
|
|
}
|
|
}
|
|
}
|
|
|
|
void exec_module_scripts(const char *stage, const vector<string> &module_list) {
|
|
LOGI("* Running module %s scripts\n", stage);
|
|
char path[4096];
|
|
bool pfs = stage == "post-fs-data"sv;
|
|
for (auto &m : module_list) {
|
|
const char* module = m.data();
|
|
sprintf(path, MODULEROOT "/%s/%s.sh", module, stage);
|
|
if (access(path, F_OK) == -1)
|
|
continue;
|
|
LOGI("%s: exec [%s.sh]\n", module, stage);
|
|
exec_t exec {
|
|
.pre_exec = set_script_env,
|
|
.fork = pfs ? fork_no_zombie : fork_dont_care
|
|
};
|
|
if (pfs)
|
|
exec_command_sync(exec, BBEXEC_CMD, path);
|
|
else
|
|
exec_command(exec, BBEXEC_CMD, path);
|
|
}
|
|
}
|
|
|
|
constexpr char install_script[] = R"EOF(
|
|
APK=%s
|
|
log -t Magisk "apk_install: $APK"
|
|
log -t Magisk "apk_install: $(pm install -r $APK 2>&1)"
|
|
rm -f $APK
|
|
)EOF";
|
|
|
|
void install_apk(const char *apk) {
|
|
setfilecon(apk, "u:object_r:" SEPOL_FILE_TYPE ":s0");
|
|
exec_t exec {
|
|
.fork = fork_no_zombie
|
|
};
|
|
char cmds[sizeof(install_script) + 4096];
|
|
sprintf(cmds, install_script, apk);
|
|
exec_command_sync(exec, "/system/bin/sh", "-c", cmds);
|
|
}
|
|
|
|
[[noreturn]] __printflike(1, 2)
|
|
static void abort(const char *fmt, ...) {
|
|
va_list valist;
|
|
va_start(valist, fmt);
|
|
vfprintf(stderr, fmt, valist);
|
|
fprintf(stderr, "\n\n");
|
|
va_end(valist);
|
|
exit(1);
|
|
}
|
|
|
|
constexpr char install_module_script[] = R"EOF(
|
|
exec $(magisk --path)/.magisk/busybox/busybox sh -c '
|
|
. /data/adb/magisk/util_functions.sh
|
|
install_module
|
|
exit 0'
|
|
)EOF";
|
|
|
|
void install_module(const char *file) {
|
|
if (getuid() != 0)
|
|
abort("Run this command with root");
|
|
if (access(DATABIN, F_OK) ||
|
|
access(DATABIN "/busybox", X_OK) ||
|
|
access(DATABIN "/util_functions.sh", F_OK))
|
|
abort("Incomplete Magisk install");
|
|
if (access(file, F_OK)) {
|
|
abort("'%s' does not exist", file);
|
|
}
|
|
|
|
setenv("OUTFD", "1", 1);
|
|
setenv("ZIPFILE", file, 1);
|
|
setenv("ASH_STANDALONE", "1", 1);
|
|
|
|
int fd = xopen("/dev/null", O_RDONLY);
|
|
xdup2(fd, STDERR_FILENO);
|
|
close(fd);
|
|
|
|
const char *argv[] = { "/system/bin/sh", "-c", install_module_script };
|
|
execve(argv[0], (char **) argv, environ);
|
|
abort("Failed to execute BusyBox shell");
|
|
}
|