mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-07-15 01:23:04 -07:00
97 lines
No EOL
2.8 KiB
C
97 lines
No EOL
2.8 KiB
C
//
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// Created by DXL on 2017/9/1.
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//
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//including header
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#include <malloc.h>
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#include <jni_tools.h>
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#include "stdbool.h"
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//当前线程是否添加的标志位
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static bool g_IsAttach;
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//TODO 环境变量获取函数
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JNIEnv *getJniEnv() {
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JNIEnv *currentThreadEnv;
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g_IsAttach = false;
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if ((*g_JavaVM)->GetEnv(g_JavaVM, (void **) ¤tThreadEnv, JNI_VERSION_1_4) != JNI_OK) {
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LOGE("Get Env Fail!");
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if ((*g_JavaVM)->AttachCurrentThread(g_JavaVM, ¤tThreadEnv, NULL) != JNI_OK) {
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LOGE("Attach the current thread Fail!");
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g_IsAttach = false;
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return NULL;
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} else {
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g_IsAttach = true;
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LOGE("Attach the current thread Success!");
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return currentThreadEnv;
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}
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} else {
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g_IsAttach = false;
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//LOGE("Get Env Success!");
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return currentThreadEnv;
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}
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}
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//解绑线程env
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void deatchThread() {
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if (g_IsAttach) {
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LOGD("线程解绑成功!");
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(*g_JavaVM)->DetachCurrentThread(g_JavaVM);
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}
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}
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//TODO 命令行解析
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CMD *parse_command_line(const char *commandStr) {
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//一个指针，指向传进来的命令字符串（const修饰的，我们需要复刻一份!）
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CMD *cmd = (CMD *) malloc(sizeof(CMD));
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if (!cmd) {
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LOGD("申请空间失败!");
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return NULL;
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}
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//拷贝字符串到堆空间!
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char *pTmp = strdup(commandStr);
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LOGD("拷贝参数字符串到临时堆!");
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//返回的结果!先初始化为20个空间
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int size = 20;
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cmd->cmd = (char **) malloc(size * sizeof(char **));
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if (cmd->cmd) {
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LOGD("申请参数空间成功!");
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} else {
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LOGD("申请空间失败!");
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}
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//进行截取
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char *pStr = strtok(pTmp, " ");
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LOGD("第0次截取完成: %s", pStr);
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//给结果数组进行下标为0的第一次初始化
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cmd->cmd[0] = pStr;
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//局部变量用于储存解析到的命令个数，下标移动为一
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int count = 1;
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//需要截取命令参数，以空格为限定符
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for (; pStr != NULL; ++count) {
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//如果容量不够，则扩容!
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if (count == (size - 1)) {
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size += 20;
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cmd->cmd = (char **) realloc(cmd->cmd, size * sizeof(char **));
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LOGD("超过初始容量，自动扩容!");
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}
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pStr = strtok(NULL, " ");
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if (pStr) {
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cmd->cmd[count] = pStr;
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LOGD("第%d次截取完成: %s", count, pStr);
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}
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}
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cmd->len = (count - 1);
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LOGD("解析函数执行完成!");
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return cmd;
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}
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//内存释放
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void free_command_line(CMD *cmd) {
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//二级指针需要逐层释放!
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LOGD("释放命令行字符串二级引用!");
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free(cmd->cmd[0]);
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LOGD("释放命令行一级引用!");
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free(cmd->cmd);
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LOGD("释放结构体内存");
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free(cmd);
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} |