Magisk/native/jni/core/scripting.cpp
2020-05-08 04:09:58 -07:00

93 lines
2.1 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 DATABIN "/busybox", "sh"
static void set_standalone() {
setenv("ASH_STANDALONE", "1", 1);
};
void exec_script(const char *script) {
exec_t exec {
.pre_exec = set_standalone,
.fork = fork_no_zombie
};
exec_command_sync(exec, BBEXEC_CMD, script);
}
void exec_common_script(const char *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_standalone,
.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_script(const char *stage, const vector<string> &module_list) {
char path[4096];
bool pfs = stage == "post-fs-data"sv;
for (auto &m : module_list) {
const char* module = m.c_str();
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_standalone,
.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_DOMAIN ":s0");
exec_t exec {
.pre_exec = set_standalone,
.fork = fork_no_zombie
};
char cmds[sizeof(install_script) + 4096];
sprintf(cmds, install_script, apk);
exec_command_sync(exec, BBEXEC_CMD, "-c", cmds);
}