linux下C语言实现https请求源码

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/stat.h> #include <fcntl.h> #include <sys/socket.h> #include <sys/types.h> #include <netdb.h> #include <errno.h> #include <time.h> #include <openssl/crypto.h> #include <openssl/ssl.h> #include <openssl/err.h> #include <openssl/rand.h> int https_get_request(char *ip,char *name,int portnumber,char *get_str) { int sockfd=0; int ret; int nbytes; char host_addr[256]; char request[1024]; int send, totalsend; SSL *ssl; SSL_CTX *ctx; char server_ip[16]={0}; struct hostent *host; struct in_addr addr; struct sockaddr_in servaddr; if(ip==NULL||strlen(ip)<7) { if((host=gethostbyname(name)) == NULL) { printf("gethostbyname fail..............\n"); return -1; } memcpy(&addr.s_addr,host->h_addr_list[0],sizeof(addr.s_addr)); strcpy(server_ip,(char *)inet_ntoa(addr)); //printf("gethostbyname %s ==> %s ..............\n",name,server_ip); } else { strcpy(server_ip,ip); } /* 客户程序开始建立 sockfd描述符 */ if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { /*建立SOCKET连接 */ printf("socket fail..............\n"); return -1; } /* 客户程序填充服务端的资料 */ memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = AF_INET; servaddr.sin_port = htons(portnumber); if(inet_pton(AF_INET, server_ip, &servaddr.sin_addr) <= 0) { printf("inet_pton error for %s\n",server_ip); close(sockfd); return -1; } /* 客户程序发起连接请求 */ if (connect(sockfd, (struct sockaddr *) (&servaddr), sizeof(struct sockaddr)) == -1) { printf( "Connect Error:%s\a\n", strerror(errno)); close(sockfd); return -1; } /* SSL初始化 */ SSL_library_init(); SSL_load_error_strings(); ctx = SSL_CTX_new(SSLv23_client_method()); if (ctx == NULL) { close(sockfd); return -1; } ssl = SSL_new(ctx); if (ssl == NULL) { close(sockfd); return -1; } /* 把socket和SSL关联 */ ret = SSL_set_fd(ssl, sockfd); if (ret == 0) { close(sockfd); return -1; } RAND_poll(); while (RAND_status() == 0) { unsigned short rand_ret = rand() % 65536; RAND_seed(&rand_ret, sizeof(rand_ret)); } ret = SSL_connect(ssl); if (ret != 1) { close(sockfd); return -1; } sprintf(request, "GET /%s HTTP/1.1\r\nAccept: */*\r\nAccept-Language: zh-cn\r\n\ User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)\r\n\ Host: %s:%d\r\nConnection: Close\r\n\r\n", get_str, host_addr,portnumber); //printf( "%s", request); /*准备request，将要发送给主机 */ printf("request======>:\t\t[%s]\n",get_str); /*发送https请求request */ send = 0; totalsend = 0; nbytes = strlen(request); while (totalsend < nbytes) { send = SSL_write(ssl, request + totalsend, nbytes - totalsend); if (send == -1) { close(sockfd); return -1; } totalsend += send; //printf("%d bytes send OK!\n", totalsend); } /* 结束通讯 */ SSL_shutdown(ssl); close(sockfd); SSL_free(ssl); SSL_CTX_free(ctx); ERR_free_strings(); return 0; } int https_get_request_wait_rsp(char *ip,char *name,int portnumber,char *get_str,char *rsp_str,int rsp_buf_len) { int sockfd=0; int ret; char buffer[1024*400]; int nbytes; char host_addr[256]; char request[1024]; int send, totalsend; int i; SSL *ssl; SSL_CTX *ctx; char server_ip[16]={0}; struct hostent *host; struct in_addr addr; struct sockaddr_in servaddr; if(ip==NULL||strlen(ip)<7) { if((host=gethostbyname(name)) == NULL) { printf("gethostbyname fail..............\n"); return -1; } memcpy(&addr.s_addr,host->h_addr_list[0],sizeof(addr.s_addr)); strcpy(server_ip,(char *)inet_ntoa(addr)); //printf("gethostbyname %s ==> %s ..............\n",name,server_ip); } else { strcpy(server_ip,ip); } /* 客户程序开始建立 sockfd描述符 */ if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { /*建立SOCKET连接 */ printf("socket fail..............\n"); return -1; } /* 客户程序填充服务端的资料 */ memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = AF_INET; servaddr.sin_port = htons(portnumber); if(inet_pton(AF_INET, server_ip, &servaddr.sin_addr) <= 0) { printf("inet_pton error for %s\n",server_ip); close(sockfd); return -1; } /* 客户程序发起连接请求 */ if (connect(sockfd, (struct sockaddr *) (&servaddr), sizeof(struct sockaddr)) == -1) { printf( "Connect Error:%s\a\n", strerror(errno)); close(sockfd); return -1; } /* SSL初始化 */ SSL_library_init(); SSL_load_error_strings(); ctx = SSL_CTX_new(SSLv23_client_method()); if (ctx == NULL) { close(sockfd); return -1; } ssl = SSL_new(ctx); if (ssl == NULL) { close(sockfd); return -1; } /* 把socket和SSL关联 */ ret = SSL_set_fd(ssl, sockfd); if (ret == 0) { close(sockfd); return -1; } RAND_poll(); while (RAND_status() == 0) { unsigned short rand_ret = rand() % 65536; RAND_seed(&rand_ret, sizeof(rand_ret)); } ret = SSL_connect(ssl); if (ret != 1) { close(sockfd); return -1; } sprintf(request, "GET /%s HTTP/1.1\r\nAccept: */*\r\nAccept-Language: zh-cn\r\n\ User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)\r\n\ Host: %s:%d\r\nConnection: Close\r\n\r\n", get_str, host_addr,portnumber); //printf( "%s", request); /*准备request，将要发送给主机 */ printf("request======>:\t\t[%s]\n",get_str); /*发送https请求request */ send = 0; totalsend = 0; nbytes = strlen(request); while (totalsend < nbytes) { send = SSL_write(ssl, request + totalsend, nbytes - totalsend); if (send == -1) { close(sockfd); return -1; } totalsend += send; //printf("%d bytes send OK!\n", totalsend); } //printf("\nThe following is the response header:\n"); i = 0; /* 连接成功了，接收https响应，response */ while((nbytes = SSL_read(ssl, buffer, 1)) == 1) { if(i < 4) { if (buffer[0] == '\r' || buffer[0] == '\n') { i++; if(i>=4) { break; } } else { i = 0; } //printf("%c", buffer[0]); /*把https头信息打印在屏幕上 */ } } memset(rsp_str,0,rsp_buf_len); ret = SSL_read(ssl, rsp_str, rsp_buf_len); if(ret<0) { printf("response ret =%d=============\n",ret); close(sockfd); return -1; } printf("response ret =%d=============>\t\t[%s]\n\n",ret,rsp_str); /* 结束通讯 */ SSL_shutdown(ssl); close(sockfd); SSL_free(ssl); SSL_CTX_free(ctx); ERR_free_strings(); return 0; } int main() { char rsp_buf[2048]={0}; //只发请求 不需要等待回复 https_get_request("ipx.xxx.xxx.xx",NULL,80,"xxxx/xxx.req?aa=21"); //替换成自己需要的HTTP请求 //发请求 不需要等待回复 https_get_request_wait_rsp("ipx.xxx.xxx.xx",NULL,80,"xxxx/xxx.req?aa=21",rsp_buf,sizeof(rsp_buf)); //用域名 https_get_request_wait_rsp(NULL,"www.baidu.com",8080,"xxxx/xxx.req?aa=21",rsp_buf,sizeof(rsp_buf)); https_get_request(NULL,"www.baidu.com",8080,"xxxx/xxx.req?aa=21"); printf("=============>\n"); return 0; }