gcdsfh145
408 lines
11 KiB
C++
Executable File
408 lines
11 KiB
C++
Executable File
#include <stdio.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <vector>
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#include <time.h>
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#include <iostream>
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#include <unistd.h>
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#include <cstring>
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#ifdef __cplusplus
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extern "C"{
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#endif
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char* strstrstr(char* str, char* text, char* rear);//变态级的函数,看了可能会崩溃
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char* httppost(char* hostname, char* url, char* cs);//POST方法
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char* httpget(const char* hostname, char* url);//GET方法
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char* getip(char* hostname);//域名转换IP
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int hextoint(char* hex);//16进制字符串转整数
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#ifdef __cplusplus
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}
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#endif
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char* httppost(char* hostname, char* url, char* cs){
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// sock句柄
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int sockfd;
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struct sockaddr_in serveraddr;
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//两个是同一个类型，可混用，但是会警告
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//int addrlen = sizeof(serveraddr);
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socklen_t addrlen = sizeof(serveraddr);
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if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
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//printf("创建网络连接失败---socket error!\n");
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return NULL;
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}
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//C4droid的GCC没有这个函数，编译会报错
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//bzero(&serveraddr, addrlen);
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//可以使用这个函数
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memset(&serveraddr,0,addrlen);
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serveraddr.sin_family = AF_INET;
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//端口80
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serveraddr.sin_port = htons(80);
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struct hostent* host;
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host = gethostbyname(hostname);
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if (host == NULL){
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printf("无法解析域名\n");
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close(sockfd);
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return NULL;
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}
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struct in_addr ip = *((struct in_addr *)host->h_addr);
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//printf("ip:%s\n",inet_ntoa(ip));
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serveraddr.sin_addr = ip;
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if (connect(sockfd, (struct sockaddr*) & serveraddr, addrlen) < 0){
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//printf("连接到服务器失败,connect error!\n");
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close(sockfd);
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return NULL;
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}
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//因为懒，所以char[2048]
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//可以通过strlen获取参数长度来动态申请内存
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char postxyt[2048];
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char postsjlen[5];
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// 发送数据
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//32位要用 "%u" 经测试发现还是long最稳定
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//顺利通过 GCC，arm-linux-gcc，arm-linux-gnueabi-gcc，安卓jni 编译 无警告
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#if __SIZEOF_LONG__ == 8
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sprintf(postsjlen, "%lu", strlen(cs));
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#else
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sprintf(postsjlen, "%u", strlen(cs));
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#endif
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memset(postxyt, 0, 2048);
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// 追加字符串（请求协议头）
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//个人感觉strcat函数比较低效
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//用char指针和strcpy函数会比较快
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sprintf(postxyt,"POST /%s HTTP/1.1\r\nHost: %s\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: %ld\r\n\r\n%s\r\n\r\n",url,hostname,strlen(cs),cs);
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//别问，问就是 “一切皆文件”
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/*
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if (write(sockfd, postxyt, strlen(postxyt)) == -1){
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//printf("发送失败！错误代码:%d，错误信息:%s\n", errno, strerror(errno));
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close(sockfd);
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return NULL;
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}*/
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if (send(sockfd, postxyt, strlen(postxyt),0) == -1){
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printf("%d，%s\n", errno, strerror(errno));
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close(sockfd);
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return NULL;
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}
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fd_set fds;
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struct timeval tv = { 3,0 }; //select等待3秒，3秒轮询，要非阻塞就置0
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//非阻塞需要循环
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FD_ZERO(&fds); //每次循环都要清空集合，否则不能检测描述符变化
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FD_SET(sockfd, &fds); //添加描述符
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if (select(sockfd + 1, &fds, NULL, NULL, &tv) < 1){
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//非阻塞时使用continue;
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//-1错误
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//0无写入数据
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close(sockfd);
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return NULL;
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}
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if (FD_ISSET(sockfd, &fds)) { //测试sock是否可读，即是否网络上有数据
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char xyt[1024];
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char* xytzz = xyt;
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char* xytmaxlen = xyt + 1023;
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int readlen;
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while (readlen = read(sockfd, xytzz, 1)){
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if(*xytzz == '\n'){
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//printf("匹配到一个\\n\n");
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if(strncmp(xytzz - 3,"\r\n\r",3) == 0){
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*++xytzz = '\0';
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//printf("嗨呀，完全匹配，好开心\n");
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break;
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}
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}
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xytzz++;
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if(xytmaxlen == xytzz){
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//printf("什么吊毛协议头这么长\n");
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close(sockfd);
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return NULL;
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}
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}
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if(!readlen){
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//printf("服务器断开了连接，并未发送任何数据。\n");
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close(sockfd);
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return NULL;
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}
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//printf("%s\n--\n",xyt);
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char* xylen = strstrstr(xyt,"Content-Length: ","\n");
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char* xyzw;
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if(xylen == NULL){
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//如果读取正文长度失败则进入分段读取模式
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char hexlen[8];
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char* hex = hexlen;
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do{
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read(sockfd, hex, 1);
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}while(*hex++ != '\n');
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*hex = '\0';
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int rdlen = hextoint(hexlen);
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if(rdlen == 0){
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close(sockfd);
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return NULL;
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}
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//rdlen++;
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xyzw = (char*)malloc(rdlen + 2);//把\r\n读出来
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read(sockfd, xyzw, rdlen + 2);//方便下面读取区块信息
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//xyzw[rdlen] = '\0';
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//读取下一块内容
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while(1){
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hex = hexlen;
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do{
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read(sockfd, hex, 1);
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}while(*hex++ != '\n');
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*hex = '\0';
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int chlen = hextoint(hexlen);
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//判断当前区块是否为0
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if(chlen == 0)break;
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rdlen += chlen;
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xyzw = (char*)realloc(xyzw,rdlen + 2);
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char* xrzz = xyzw + rdlen - chlen;
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read(sockfd, xrzz, chlen + 2);
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//xyzw[rdlen] = '\0';
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}
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xyzw[rdlen] = '\0';
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}else{
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//得到正文长度，一次性读取 申请内存
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int xyzwlen = atoi(xylen);
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free(xylen);
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//printf("正文共%d字节\n",xyzwlen);
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xyzw = (char*)malloc(xyzwlen + 1);
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readlen = read(sockfd, xyzw, xyzwlen);//接受网络数据
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xyzw[readlen] = '\0';
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//printf("读取了%d字节\n",readlen);
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}
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close(sockfd);
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return xyzw;
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}
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close(sockfd);
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return NULL;
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}
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char* httpget(const char* hostname, char* url){
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// sock句柄
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int sockfd;
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struct sockaddr_in serveraddr;
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//两个是同一个类型，可混用，但是会警告
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//int addrlen = sizeof(serveraddr);
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socklen_t addrlen = sizeof(serveraddr);
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if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
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//printf("创建网络连接失败---socket error!\n");
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return NULL;
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}
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//C4droid的GCC没有这个函数，编译会报错
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//bzero(&serveraddr, addrlen);
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//可以使用这个函数
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memset(&serveraddr,0,addrlen);
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serveraddr.sin_family = AF_INET;
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//端口80
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serveraddr.sin_port = htons(80);
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struct hostent* host;
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host = gethostbyname(hostname);
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if (host == NULL){
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//printf("无法解析域名\n");
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close(sockfd);
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return NULL;
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}
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struct in_addr ip = *((struct in_addr *)host->h_addr);
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//printf("ip:%s\n",inet_ntoa(ip));
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serveraddr.sin_addr = ip;
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if (connect(sockfd, (struct sockaddr*) & serveraddr, addrlen) < 0){
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//printf("连接到服务器失败,connect error!\n");
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close(sockfd);
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return NULL;
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}
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//因为懒，所以char[2048]
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//可以通过strlen获取参数长度来动态申请内存
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char postxyt[2048];
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memset(postxyt, 0, 2048);
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// 追加字符串（请求协议头）
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//个人感觉strcat函数比较低效
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//用char指针和strcpy函数会比较快
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sprintf(postxyt,"GET /%s HTTP/1.1\r\nHost: %s\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\n",url,hostname);
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//别问，问就是 “一切皆文件”
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/*
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if (write(sockfd, postxyt, strlen(postxyt)) == -1){
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//printf("发送失败！错误代码:%d，错误信息:%s\n", errno, strerror(errno));
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close(sockfd);
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return NULL;
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}*/
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if (send(sockfd, postxyt, strlen(postxyt),0) == -1){
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printf("%d%s\n", errno, strerror(errno));
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close(sockfd);
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return NULL;
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}
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fd_set fds;
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struct timeval tv = { 3,0 }; //select等待3秒，3秒轮询，要非阻塞就置0
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//非阻塞需要循环
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FD_ZERO(&fds); //每次循环都要清空集合，否则不能检测描述符变化
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FD_SET(sockfd, &fds); //添加描述符
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if (select(sockfd + 1, &fds, NULL, NULL, &tv) < 1){
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//非阻塞时使用continue;
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//-1错误
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//0无写入数据
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close(sockfd);
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return NULL;
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}
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if (FD_ISSET(sockfd, &fds)) { //测试sock是否可读，即是否网络上有数据
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char xyt[1024];
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char* xytzz = xyt;
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char* xytmaxlen = xyt + 1023;
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int readlen;
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while (readlen = read(sockfd, xytzz, 1)){
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if(*xytzz == '\n'){
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//printf("匹配到一个\\n\n");
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if(strncmp(xytzz - 3,"\r\n\r",3) == 0){
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*++xytzz = '\0';
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//printf("嗨呀，完全匹配，好开心\n");
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break;
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}
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}
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xytzz++;
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if(xytmaxlen == xytzz){
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//printf("什么吊毛协议头这么长\n%s\n",xyt);
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close(sockfd);
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return NULL;
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}
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}
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if(!readlen){
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//printf("服务器断开了连接，并未发送任何数据。\n");
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close(sockfd);
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return NULL;
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}
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//printf("%s\n--\n",xyt);
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char* xylen = strstrstr(xyt,"Content-Length: ","\n");
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char* xyzw;
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if(xylen == NULL){
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//如果读取正文长度失败则进入分段读取模式
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char hexlen[8];
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char* hex = hexlen;
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do{
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read(sockfd, hex, 1);
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}while(*hex++ != '\n');
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*hex = '\0';
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int rdlen = hextoint(hexlen);
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if(rdlen == 0){
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close(sockfd);
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return NULL;
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}
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//rdlen++;
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xyzw = (char*)malloc(rdlen + 2);//把\r\n读出来
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read(sockfd, xyzw, rdlen + 2);//方便下面读取区块信息
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//xyzw[rdlen] = '\0';
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//读取下一块内容
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while(1){
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hex = hexlen;
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do{
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read(sockfd, hex, 1);
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}while(*hex++ != '\n');
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*hex = '\0';
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int chlen = hextoint(hexlen);
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//判断当前区块是否为0
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if(chlen == 0)break;
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rdlen += chlen;
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xyzw = (char*)realloc(xyzw,rdlen + 2);
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char* xrzz = xyzw + rdlen - chlen;
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read(sockfd, xrzz, chlen + 2);
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//xyzw[rdlen] = '\0';
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}
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xyzw[rdlen] = '\0';
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}else{
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//得到正文长度，一次性读取 申请内存
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int xyzwlen = atoi(xylen);
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free(xylen);
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//printf("正文共%d字节\n",xyzwlen);
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xyzw = (char*)malloc(xyzwlen + 1);
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readlen = read(sockfd, xyzw, xyzwlen);//接受网络数据
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xyzw[readlen] = '\0';
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//printf("读取了%d字节\n",readlen);
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}
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close(sockfd);
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return xyzw;
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}
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close(sockfd);
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return NULL;
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}
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char* strstrstr(char* str, char* front, char* rear){
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if(!str || !front || !rear)return NULL;//如果你不传NULL,我至于吗
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char* s;
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char* t;
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while(*str) {
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s = str;
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t = front;
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while (*s == *t) {
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s++;
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t++;
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if (!*t) {
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str = s;
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char* old = str;
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do{
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s = str;
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t = rear;
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while (*s == *t) {
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s++;
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t++;
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if (!*t) {
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int charlen = str - old;
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char* newstr = (char*)malloc(charlen + 1);
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strncpy(newstr, old, charlen);
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//使用Visual studio编程时会警告strncpy函数存在风险，使用strncpy_s替换之
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//strncpy_s(newstr, charlen + 1,old, charlen);
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newstr[charlen] = '\0';
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return newstr;
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}
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}
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str++;
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}while(*str);
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return NULL;
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}
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}
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str++;
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}
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return NULL;
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}
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char* getip(char* hostname) {
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//不多bb，面向百度编程
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struct hostent* host;
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host = gethostbyname(hostname);
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if (host == NULL){
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perror("cannot get host by hostname");
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return NULL;
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}
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return inet_ntoa(*((struct in_addr *)host->h_addr));
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}
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int hextoint(char * hex){
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int value = 0;
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while (*hex){
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if (*hex >= 'A' && *hex <= 'F')
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value = (*hex - 55) + 16 * value;
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else if (*hex >= 'a' && *hex <= 'f')
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value = (*hex - 87) + 16 * value;
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else if (*hex >= '0' && *hex <= '9')
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value = (*hex - 48) + 16 * value;
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else{
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return value;
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}
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hex++;
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}
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return value;
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}
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