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testRoot.h
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225 lines (198 loc) · 4.92 KB
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#ifndef TEST_ROOT_H_
#define TEST_ROOT_H_
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <string.h>
#include <vector>
#include "kernel_root_helper.h"
#include "kernel_root_key.h"
//安静输出模式
#define QUIET_PRINTF
#ifdef QUIET_PRINTF
#undef TRACE
#define TRACE(fmt, ...)
#else
#ifdef __ANDROID__
#include <android/log.h>
#define LOG_TAG "JNIGlue"
//#define TRACE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
#define TRACE(fmt, ...) printf(fmt, ##__VA_ARGS__)
#else
#define TRACE(fmt, ...) printf(fmt, ##__VA_ARGS__)
#endif
#endif
static int find_all_cmdline_process(const char* str_root_key, const char* target_cmdline, std::vector<pid_t> & vOut)
{
int id;
DIR* dir;
FILE *fp;
char filename[32];
char cmdline[256];
struct dirent * entry;
vOut.clear();
if (kernel_root::get_root(str_root_key) != 0) {
return -1;
}
dir = opendir("/proc");
if (dir == NULL) {
return -3;
}
while ((entry = readdir(dir)) != NULL) {
// 如果读取到的是"."或者".."则跳过，读取到的不是文件夹名字也跳过
if ((strcmp(entry->d_name, ".") == 0) || (strcmp(entry->d_name, "..") == 0)) {
continue;
}
else if (entry->d_type != DT_DIR) {
continue;
}
else if (strspn(entry->d_name, "1234567890") != strlen(entry->d_name)) {
continue;
}
id = atoi(entry->d_name);
if (id != 0) {
sprintf(filename, "/proc/%d/cmdline", id);
fp = fopen(filename, "r");
if (fp) {
fgets(cmdline, sizeof(cmdline), fp);
fclose(fp);
//TRACE("[+] find %d process cmdline: %s\n", id, cmdline);
if (strstr(cmdline, target_cmdline)) {
/* process found */
vOut.push_back(id);
}
}
}
}
closedir(dir);
return 0;
}
static int safe_find_all_cmdline_process(const char* str_root_key, const char* target_cmdline, std::vector<pid_t> & vOut)
{
int fd[2];
if (pipe(fd)) {
return -1001;
}
pid_t pid;
if ((pid = fork()) < 0) {
//fork error
return -1002;
}
else if (pid == 0) { // child process
close(fd[0]); //close read pipe
int ret = find_all_cmdline_process(str_root_key, target_cmdline, vOut);
write(fd[1], &ret, sizeof(ret));
size_t cnt = vOut.size();
write(fd[1], &cnt, sizeof(cnt));
for (pid_t t : vOut) {
write(fd[1], &t, sizeof(t));
}
close(fd[1]); //close write pipe
_exit(0);
}
else { // father process
close(fd[1]); //close write pipe
int status;
if (waitpid(pid, &status, WUNTRACED) < 0 && errno != EACCES) {
return -1003;
}
int ret = -1004;
read(fd[0], (void*)&ret, sizeof(ret));
size_t cnt = 0;
read(fd[0], (void*)&cnt, sizeof(cnt));
for (size_t i = 0; i < cnt; i++) {
pid_t t;
read(fd[0], (void*)&t, sizeof(t));
vOut.push_back(t);
}
close(fd[0]); //close read pipe
return ret;
}
return -1005;
}
static int wait_and_find_cmdline_process(const char* str_root_key, const char* target_cmdline)
{
int id;
pid_t pid = -1;
DIR* dir;
FILE *fp;
char filename[32];
char cmdline[256];
struct dirent * entry;
if (kernel_root::get_root(str_root_key) != 0) {
return -1;
}
while (1) {
sleep(0);
dir = opendir("/proc");
if (dir == NULL) {
return -3;
}
while ((entry = readdir(dir)) != NULL) {
// 如果读取到的是"."或者".."则跳过，读取到的不是文件夹名字也跳过
if ((strcmp(entry->d_name, ".") == 0) || (strcmp(entry->d_name, "..") == 0)) {
continue;
}
else if (entry->d_type != DT_DIR) {
continue;
}
else if (strspn(entry->d_name, "1234567890") != strlen(entry->d_name)) {
continue;
}
id = atoi(entry->d_name);
if (id != 0) {
sprintf(filename, "/proc/%d/cmdline", id);
fp = fopen(filename, "r");
if (fp) {
fgets(cmdline, sizeof(cmdline), fp);
fclose(fp);
//TRACE("[+] find %d process cmdline: %s\n", id, cmdline);
if (strstr(cmdline, target_cmdline)) {
/* process found */
pid = id;
break;
}
}
}
}
closedir(dir);
if (pid <= 0) {
continue;
}
break;
}
return pid;
}
static int safe_wait_and_find_cmdline_process(const char* str_root_key, const char* target_cmdline)
{
int fd[2];
if (pipe(fd)) {
return -1001;
}
pid_t pid;
if ((pid = fork()) < 0) {
//fork error
return -1002;
}
else if (pid == 0) { // child process
close(fd[0]); //close read pipe
int ret = wait_and_find_cmdline_process(str_root_key, target_cmdline);
write(fd[1], &ret, sizeof(ret));
close(fd[1]); //close write pipe
_exit(0);
}
else { // father process
close(fd[1]); //close write pipe
int status;
if (waitpid(pid, &status, WUNTRACED) < 0 && errno != EACCES) {
return -1003;
}
int ret = -1004;
read(fd[0], (void*)&ret, sizeof(ret));
close(fd[0]); //close read pipe
return ret;
}
return -1005;
}
#endif /* TEST_ROOT_H_ */