我试图做一个简单的连接到SMTP服务器(需要认证)。 我使用SSL(C中的OpenSSL库)在端口587上连接到smtp.live.com。如何在C中使用SMTP身份验证?
我首先用socket()函数初始化我的套接字,然后用connect()连接到服务器。然后我启动SSL通道,然后尝试登录。
这里是我的壳输出:
server : 220 BLU0-SMTP261.phx.gbl Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Sat, 9 Mar 2013 07:25:17 -0800
EHLO [127.0.0.1]
server : 250-BLU0-SMTP261.phx.gbl Hello [163.5.221.45]
250-TURN
250-SIZE 41943040
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-TLS
250-STARTTLS
250 OK
STARTTLS
server : 220 2.0.0 SMTP server ready
EHLO [127.0.0.1]
server : 250-BLU0-SMTP261.phx.gbl Hello [163.5.221.45]
250-TURN
250-SIZE 41943040
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-AUTH LOGIN PLAIN
250 OK
AUTH LOGIN
server : 334 VXNlcm5hbWU6
Y2hlcmGhvdXXXXXXXXXXXuY29tXHJcbg0K
serveur :
U2hsYWXXXXXXXXXXXwblxyXG4NCg0K
server :
正如你所看到的,用户名和密码是用base64编码两种(没有\ r \ n)的。我不明白为什么服务器不答什么...(我试图把一个sleep()读取套接字之前,但我得到了同样的结果)
代码连接到服务器:
static int _connect_IPV4(int socket, struct hostent *host)
{
struct sockaddr_in addr;
addr.sin_port = htons(587);
addr.sin_family = AF_INET;
addr.sin_addr = *(struct in_addr *)host->h_addr;
bzero(&addr.sin_zero, 8);
if (connect(socket, (struct sockaddr *)&addr, sizeof(struct sockaddr_in)) == -1)
printf("%s\n", strerror(errno));
else
return (socket);
}
代码开始SSL:
static void _launch_ssl(int socket)
{
read_socket(socket);
write_socket(socket, "EHLO [127.0.0.1]\r\n");
read_socket(socket);
write_socket(socket, "STARTTLS\r\n");
read_socket(socket);
}
代码连接SSL:
connection *ssl_connect()
{
connection *c;
c = malloc(sizeof(connection));
c->ssl_handle = NULL;
c->ssl_context = NULL;
c->socket = connect_TCP_IP();
_launch_ssl(c->socket);
if (c->socket != -1)
{
SSL_load_error_strings();
SSL_library_init();
SSL_CTX_new(SSLv23_client_method());
SSL_new(c->ssl_context);
SSL_set_fd(c->ssl_handle, c->socket);
SSL_connect(c->ssl_handle);
}
return (c);
}
主营:
int main()
{
connection *c;
c = ssl_connect();
ssl_write_socket(c, "EHLO [127.0.0.1]\r\n");
ssl_read_socket(c);
ssl_write_socket(c, "AUTH LOGIN\r\n");
ssl_read_socket(c);
ssl_write_socket(c, "Y2hlcmNoZXN0b3lhQGhvdG1haWwuY29tXHJcbg0K");
printf("\n");
ssl_read_socket(c);
ssl_write_socket(c, "U2hsYWdldHRvUHIwblxyXG4NCg0K");
printf("\n");
ssl_read_socket(c);
}
您需要向我们展示你的代码... – 2013-03-09 15:43:17