my sample code is given below which is not working in window
define _CRT_SECURE_NO_DEPRECATE
#include <stdio.h>
#include <winsock2.h>
#include <openssl/crypto.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#define MAXHOSTNAMELEN 100
int startWinsock();
int main ()
{
int x = startWinsock();
if ( !x)
printf( "%i\n", x );
struct sockaddr_in host_addr;
int size;
int s;
struct hostent *host;
char hostname[MAXHOSTNAMELEN];
char buf[1000];
char request[1000];
SSL_CTX *ctx;
SSL *ssl;
int err;
printf("\nEnter Hostname: ");
scanf("%s", &hostname);
host = gethostbyname(hostname);
if (host == NULL) {
fprintf(stderr, "Unknown Host %s\n", hostname);
return -1;
}
fflush(stdout);
s = socket(PF_INET, SOCK_STREAM, 0);
if (s < 0) {
fprintf(stderr, "Socket Error\n");
return
-1;
}
host_addr.sin_family = AF_INET;
host_addr.sin_addr = *((struct in_addr *)host->h_addr);
host_addr.sin_port = htons(334);
if (connect(s, (struct sockaddr *)&host_addr,
sizeof(host_addr)) == -1) {
closesocket(s);
fprintf(stderr, "Connection Error\n");
return -1;
}
SSL_load_error_strings();
SSL_library_init();
ctx=SSL_CTX_new(SSLv23_client_method());
ssl=SSL_new(ctx);
if(!ssl) {
closesocket(s);
fprintf(stderr, "SSL creation error\n");
return -1;
}
SSL_set_fd(ssl, s);
err=SSL_connect(ssl);
if(!err) {
closesocket(s);
fprintf(stderr, "SSL connect error\nretval: %d\n",
err);
err=SSL_get_error(ssl, err);
fprintf(stderr, "SSL error: %d\n", err);
return -1;
}
//fgets( request, sizeof( request ), stdin );
if(!err) {
closesocket(s);
fprintf(stderr, "SSL write error\n");
return -1;
}
while(true)
{
sprintf( request,"Hallo,
Welt!" );
err=SSL_write(ssl, request, strlen(request));
int read_size = SSL_read(ssl, buf, sizeof(buf) );
if ( read_size > 0 )
{
buf[read_size]='\0';
printf("Getting %d Bytes of Data\nData: %s\n", read_size, buf);
}
else
{
switch( SSL_get_error( ssl, read_size ) )
{
case SSL_ERROR_ZERO_RETURN:
printf( "ZERO" );
break;
case SSL_ERROR_NONE:
printf( "No Error" );
break;
case SSL_ERROR_SSL:
printf( "SSL ERROR" );
break;
}
break;
}
Sleep(1);
}
SSL_shutdown(ssl);
SSL_free(ssl);
SSL_CTX_free(ctx);
fflush(stdout);
closesocket(s);
return 0;
}
int startWinsock()
{
WSADATA wsa;
return WSAStartup(MAKEWORD(2,0),&wsa);
}
#define _CRT_SECURE_NO_DEPRECATE
#include <windows.h>
#include <winsock.h>
#include <stdio.h>
#include <openssl/crypto.h>
#include
<openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
//Prototypen
int startWinsock(void);
int main()
{
long rc;
SOCKET acceptSocket;
SOCKET connectedSocket = NULL;
SOCKADDR_IN addr;
char buf[1024];
char buf2[1024];
SSL_CTX *ctx;
SSL *ssl;
int err;
// Winsock starten
rc=startWinsock();
if(rc!=0)
{
printf("Fehler: startWinsock, fehler code: %d\n",rc);
return 1;
}
else
{
printf("Winsock gestartet!\n");
}
// Socket erstellen
acceptSocket=socket(AF_INET,SOCK_STREAM,0);
if(acceptSocket==INVALID_SOCKET)
{
printf("Fehler: Der Socket konnte nicht erstellt werden, fehler
code: %d\n",WSAGetLastError());
return 1;
}
else
{
printf("Socket erstellt!\n");
}
// Socket
binden
memset(&addr,0,sizeof(SOCKADDR_IN));
addr.sin_family=AF_INET;
addr.sin_port=htons(334);
addr.sin_addr.s_addr=INADDR_ANY;
rc=bind(acceptSocket,(SOCKADDR*)&addr,sizeof(SOCKA DDR_IN));
if(rc==SOCKET_ERROR)
{
printf("Fehler: bind, fehler code: %d\n",WSAGetLastError());
return 1;
}
else
{
printf("Socket an port gebunden\n");
}
// In den listen Modus
rc=listen(acceptSocket,10);
if(rc==SOCKET_ERROR)
{
printf("Fehler: listen, fehler code: %d\n",WSAGetLastError());
return 1;
}
else
{
printf("acceptSocket ist im listen Modus....\n");
}
// Verbindung annehmen
connectedSocket=accept(acceptSocket,NULL,NULL);
if(connectedSocket==INVALID_SOCKET)
{
printf("Fehler: accept, fehler code: %d\n",WSAGetLastError());
return 1;
}
else
{
printf("Neue Verbindung wurde
akzeptiert!\n");
}
SSL_load_error_strings();
SSL_library_init();
ctx=SSL_CTX_new(SSLv23_server_method());
ssl=SSL_new(ctx);
if(!ssl) {
closesocket(connectedSocket);
fprintf(stderr, "SSL creation error\n");
return -1;
}
SSL_set_fd(ssl, connectedSocket);
err=SSL_accept(ssl);
if(!err) {
closesocket(connectedSocket);
fprintf(stderr, "SSL accept error\nretval: %d\n",
err);
err=SSL_get_error(ssl, err);
fprintf(stderr, "SSL error: %d\n", err);
return -1;
}
// Daten austauschen
while(true)
{
int read_size = SSL_read(ssl, buf, sizeof(buf) );
if ( read_size > 0 )
{
buf[read_size]='\0';
printf("Getting %d Bytes of Data\nData: %s\n", read_size, buf);
}
//else break;
sprintf( buf2,"Du mich auch %s\r\n", "x" );
err=SSL_write(ssl, buf2, strlen(buf2));
if(!err) {
closesocket(connectedSocket);
fprintf(stderr, "SSL write error\n");
return
-1;
}
Sleep(1000);
}
SSL_shutdown(ssl);
SSL_free(ssl);
SSL_CTX_free(ctx);
fflush(stdout);
closesocket(acceptSocket);
closesocket(connectedSocket);
WSACleanup();
return 0;
}
int startWinsock(void)
{
WSADATA wsa;
return WSAStartup(MAKEWORD(2,0),&wsa);
}
Regards,
Amit
--- On Thu, 24/4/08, amit pansuria <[EMAIL PROTECTED]> wrote:
From: amit pansuria <[EMAIL PROTECTED]>
Subject: how to write openssl based win32 c,c++ application without using winsock or mfc
To: [email protected]
Date: Thursday, 24 April, 2008, 6:23 PM
|
I want to write client socket application using c,c++ language on windows platform on vc++(vc++ console application or win32 static library).
i dont want to use any Winsock API or MFC class for creating and connecting socket.
because when i create socket using winsock API and after that if i use
SSL_read() on the fd retured by winsock API, then it will not working.
for simplicity,
IS it possible to write openssl -based client socket application using c,c++ on windows-vc++ platform without using any winsock class and MFC class
if possible then what i have to do
(1) what openssl version i have to use for windows
(2) what API i have to use for creating socket,connecting socket, reading data and writing data.
right now i m creating socket like this in window using vc++ . I m using window XP
int sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) I think in window socket() is defined in winsock.h
now i how i use SSL functionality.
whethere SSL_read() support fd return by WINSOCK API socket. if not then what is the solution.I heard that winsock doest not support for SSL
is there any third party lib i have to use or i have to write my own SSL lib API
Regards,
Amit
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