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小弟正在使用openssl，并编写了下面代码.使用 gcc -Wall -o ssl_client ssl_client 编译报下面的错误，应该是没有找到库文件... 但是openssl的库文件在哪啊？
请问那位大哥知道啊？
/tmp/ccEWKYFS.o: In function `ShowCerts':
ssl_client.c:(.text+0xd): undefined reference to `SSL_get_peer_certificate'
ssl_client.c:(.text+0x31): undefined reference to `X509_get_subject_name'
ssl_client.c:(.text+0x49): undefined reference to `X509_NAME_oneline'
ssl_client.c:(.text+0x75): undefined reference to `X509_get_issuer_name'
ssl_client.c:(.text+0x8d): undefined reference to `X509_NAME_oneline'
ssl_client.c:(.text+0xb9): undefined reference to `X509_free'
/tmp/ccEWKYFS.o: In function `main':
ssl_client.c:(.text+0x12c): undefined reference to `SSL_library_init'
ssl_client.c:(.text+0x131): undefined reference to `OPENSSL_add_all_algorithms_noconf'
ssl_client.c:(.text+0x136): undefined reference to `SSL_load_error_strings'
ssl_client.c:(.text+0x13b): undefined reference to `SSLv23_client_method'
ssl_client.c:(.text+0x143): undefined reference to `SSL_CTX_new'
ssl_client.c:(.text+0x15f): undefined reference to `ERR_print_errors_fp'
ssl_client.c:(.text+0x29d): undefined reference to `SSL_new'
ssl_client.c:(.text+0x2bb): undefined reference to `SSL_set_fd'
ssl_client.c:(.text+0x2c9): undefined reference to `SSL_connect'
ssl_client.c:(.text+0x2db): undefined reference to `ERR_print_errors_fp'
ssl_client.c:(.text+0x2eb): undefined reference to `SSL_get_current_cipher'
ssl_client.c:(.text+0x2f3): undefined reference to `SSL_CIPHER_get_name'
ssl_client.c:(.text+0x359): undefined reference to `SSL_write'
ssl_client.c:(.text+0x3f6): undefined reference to `SSL_read'
ssl_client.c:(.text+0x461): undefined reference to `SSL_shutdown'
ssl_client.c:(.text+0x46f): undefined reference to `SSL_free'
ssl_client.c:(.text+0x48b): undefined reference to `SSL_CTX_free |
我的客户端代码如下：
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/socket.h>
#include <resolv.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#define MAXBUF 1024
void ShowCerts(SSL * ssl)
{
X509 *cert;
char *line;
cert = SSL_get_peer_certificate(ssl);
if (cert != NULL) {
printf("数字证书信息:n");
line = X509_NAME_oneline(X509_get_subject_name(cert), 0, 0);
printf("证书: %sn", line);
free(line);
line = X509_NAME_oneline(X509_get_issuer_name(cert), 0, 0);
printf("颁发者: %sn", line);
free(line);
X509_free(cert);
} else
printf("无证书信息！n");
}
/************关于本文档********************************************
*filename: ssl-client.c
*purpose: 演示利用 OpenSSL 库进行基于 IP层的 SSL 加密通讯的方法，这是客户端例子
*wrote by: zhoulifa(zhoulifa@163.com) 周立发(http://zhoulifa.bokee.com)
Linux爱好者 Linux知识传播者 SOHO族 开发者 最擅长C语言
*date time:2007-02-02 20:10
*Note: 任何人可以任意复制代码并运用这些文档，当然包括你的商业用途
* 但请遵循GPL
*Thanks to:Google
*Hope:希望越来越多的人贡献自己的力量，为科学技术发展出力
* 科技站在巨人的肩膀上进步更快！感谢有开源前辈的贡献！
*********************************************************************/
int main(int argc, char **argv)
{
int sockfd, len;
struct sockaddr_in dest;
char buffer[MAXBUF + 1];
SSL_CTX *ctx;
SSL *ssl;
if (argc != 3) {
printf
("参数格式错误！正确用法如下：ntt%s IP地址 端口nt比如:t%s 127.0.0.1 80n此程序用来从某个 IP 地址的服务器某个端口接收最多 MAXBUF 个字节的消息",
argv[0], argv[0]);
exit(0);
}
/* SSL 库初始化，参看 ssl-server.c 代码 */
SSL_library_init();
OpenSSL_add_all_algorithms();
SSL_load_error_strings();
ctx = SSL_CTX_new(SSLv23_client_method());
if (ctx == NULL) {
ERR_print_errors_fp(stdout);
exit(1);
}
/* 创建一个 socket 用于 tcp 通信 */
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("Socket");
exit(errno);
}
printf("socket createdn");
/* 初始化服务器端（对方）的地址和端口信息 */
bzero(&dest, sizeof(dest));
dest.sin_family = AF_INET;
dest.sin_port = htons(atoi(argv[2]));
if (inet_aton(argv[1], (struct in_addr *) &dest.sin_addr.s_addr) == 0) {
perror(argv[1]);
exit(errno);
}
printf("address createdn");
/* 连接服务器 */
if (connect(sockfd, (struct sockaddr *) &dest, sizeof(dest)) != 0) {
perror("Connect ");
exit(errno);
}
printf("server connectedn");
/* 基于 ctx 产生一个新的 SSL */
ssl = SSL_new(ctx);
SSL_set_fd(ssl, sockfd);
/* 建立 SSL 连接 */
if (SSL_connect(ssl) == -1)
ERR_print_errors_fp(stderr);
else {
printf("Connected with %s encryptionn", SSL_get_cipher(ssl));
ShowCerts(ssl);
}
/* 发消息给服务器 */
sprintf(buffer, "GET %s HTTP/1.1rnrn", "/accounts/ClientAuth?Email=jinhui1231&Passwd=hao1234567&PersistentCookie=false&source=googletalk");
len = SSL_write(ssl, buffer, strlen(buffer));
if (len < 0)
printf
("消息'%s'发送失败！错误代码是%d，错误信息是'%s'n",
buffer, errno, strerror(errno));
else
printf("消息'%s'发送成功，共发送了%d个字节！n",
buffer, len);
#if 1
/* 接收对方发过来的消息，最多接收 MAXBUF 个字节 */
bzero(buffer, MAXBUF + 1);
/* 接收服务器来的消息 */
len = SSL_read(ssl, buffer, MAXBUF);
if (len > 0)
printf("接收消息成功:'%s'，共%d个字节的数据n",
buffer, len);
else {
printf("消息接收失败！错误代码是%d，错误信息是'%s'n",
errno, strerror(errno));
goto finish;
}
// bzero(buffer, MAXBUF + 1);
// strcpy(buffer, "from client->server");
#endif
finish:
/* 关闭连接 */
SSL_shutdown(ssl);
SSL_free(ssl);
close(sockfd);
SSL_CTX_free(ctx);
return 0;
}
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[ 本帖最后由 _mystic 于 2009-3-12 13:37 编辑 ] |
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发表于 2009-03-12 09:34
发表于 2009-03-12 09:34
