我正在尝试使用Windows和OpenSSL创建一个简单的SSL服务器。
#include <WS2tcpip.h>
#include <Winsock2.h>
#include <errno.h>
//#include <unistd.h>
#include <malloc.h>
#include <string.h>
//#include <arpa/inet.h>
//#include <sys/socket.h>
#include <sys/types.h>
//#include <netinet/in.h>
//#include <resolv.h>
#include "openssl/ssl.h"
#include "openssl/err.h"
#define FAIL -1
int OpenListener(int port)
{ int sd;
struct sockaddr_in addr;
sd = socket(PF_INET, SOCK_STREAM, 0);
//bzero(&addr, sizeof(addr));
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = INADDR_ANY;
if ( bind(sd, (struct sockaddr*)&addr, sizeof(addr)) != 0 )
{
perror("can't bind port");
abort();
}
if ( listen(sd, 10) != 0 )
{
perror("Can't configure listening port");
abort();
}
return sd;
}
SSL_CTX* InitServerCTX(void)
{ const SSL_METHOD *method;
SSL_CTX *ctx;
OpenSSL_add_all_algorithms(); /* load & register all cryptos, etc. */
SSL_load_error_strings(); /* load all error messages */
method = SSLv2_server_method(); /* create new server-method instance */
ctx = SSL_CTX_new(method); /* create new context from method */
if ( ctx == NULL )
{
ERR_print_errors_fp(stderr);
abort();
}
return ctx;
}
void LoadCertificates(SSL_CTX* ctx, char* CertFile, char* KeyFile)
{
/* set the local certificate from CertFile */
if ( SSL_CTX_use_certificate_file(ctx, CertFile, SSL_FILETYPE_PEM) <= 0 )
{
ERR_print_errors_fp(stderr);
abort();
}
/* set the private key from KeyFile (may be the same as CertFile) */
if ( SSL_CTX_use_PrivateKey_file(ctx, KeyFile, SSL_FILETYPE_PEM) <= 0 )
{
ERR_print_errors_fp(stderr);
abort();
}
/* verify private key */
if ( !SSL_CTX_check_private_key(ctx) )
{
fprintf(stderr, "Private key does not match the public certificate\n");
abort();
}
}
void ShowCerts(SSL* ssl)
{ X509 *cert;
char *line;
cert = SSL_get_peer_certificate(ssl); /* Get certificates (if available) */
if ( cert != NULL )
{
printf("Server certificates:\n");
line = X509_NAME_oneline(X509_get_subject_name(cert), 0, 0);
printf("Subject: %s\n", line);
free(line);
line = X509_NAME_oneline(X509_get_issuer_name(cert), 0, 0);
printf("Issuer: %s\n", line);
free(line);
X509_free(cert);
}
else
printf("No certificates.\n");
}
void Servlet(SSL* ssl) /* Serve the connection -- threadable */
{ char buf[1024];
char reply[1024];
int sd, bytes;
const char* HTMLecho="<html><body><pre>%s</pre></body></html>\n\n";
if ( SSL_accept(ssl) == FAIL ) /* do SSL-protocol accept */
ERR_print_errors_fp(stderr);
else
{
ShowCerts(ssl); /* get any certificates */
bytes = SSL_read(ssl, buf, sizeof(buf)); /* get request */
if ( bytes > 0 )
{
buf[bytes] = 0;
printf("Client msg: \"%s\"\n", buf);
sprintf(reply, HTMLecho, buf); /* construct reply */
SSL_write(ssl, reply, strlen(reply)); /* send reply */
}
else
ERR_print_errors_fp(stderr);
}
sd = SSL_get_fd(ssl); /* get socket connection */
SSL_free(ssl); /* release SSL state */
//close(sd); /* close connection */
closesocket(sd); /* close connection */
}
int main(int count, char *strings[])
{
SSL_CTX *ctx;
int server;
char *portnum;
if ( count != 2 )
{
printf("Usage: %s <portnum>\n", strings[0]);
exit(0);
}
SSL_library_init();
portnum = strings[1];
ctx = InitServerCTX(); /* initialize SSL */
LoadCertificates(ctx, "server.crt", "server.key"); /* load certs */
server = OpenListener(atoi(portnum)); /* create server socket */
while (1)
{ struct sockaddr_in addr;
socklen_t len = sizeof(addr);
SSL *ssl;
int client = accept(server, (struct sockaddr*)&addr, &len); /* accept connection as usual */
printf("Connection: %s:%d\n",inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
ssl = SSL_new(ctx); /* get new SSL state with context */
SSL_set_fd(ssl, client); /* set connection socket to SSL state */
Servlet(ssl); /* service connection */
}
//close(server); /* close server socket */
closesocket(server); /* close server socket */
SSL_CTX_free(ctx); /* release context */
}
此代码中的应用程序停止。
if ( bind(sd, (struct sockaddr*)&addr, sizeof(addr)) != 0 )
{
perror("can't bind port");
abort();
}
看起来您的帖子主要是代码;请添加更多详细信息。
我不知道我还要添加什么。
答案 0 :(得分:3)
为了完整起见:
在Windows下,有必要像这样初始化网络堆栈(WinSock):
WSADATA wsaData;
int iResult;
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
if (iResult != 0) {
printf("WSAStartup failed: %d\n", iResult);
return 1;
}
一旦完成网络堆栈以释放剩余资源,您也必须忘记致电WSACleanup
。
答案 1 :(得分:1)
所以,我重构了你的代码,删除了你不需要的所有垃圾(按照建议)并找到了问题。
portnum = strings[1];
这几乎肯定会计算为零,因此您的程序正在尝试绑定到端口0。
击>
不知道这里插入了什么价值,但我确信这不是你所期望的。
<强>不正确!!!!!! 强>
相反,该行应为:
portnum = strings(strings[1]);
此外,按照惯例,当人们编写'C'程序时,main的签名是:
int main (int argc, char **argv)
或强>
int main (int argc, char *argv[])
使用这些变量名称(argc
&amp; argv
)
请为了您的利益而跟随此惯例,以及跟随您的人。这意味着你的portnum line s / b:
portnum = atoi(argv[1]);
顺便说一下,不要忘记 Refugnic Eternium 建议的WSADATA/WSAStartup
位。