Hi all of you
I complile ssl_server.c (attachment file), then I run it. But there is an
error appear below:
[EMAIL PROTECTED] Codevidu]# gcc -o ssl_server ssl_server.c -lssl -lcrypto
[EMAIL PROTECTED] Codevidu]# ./ssl_server 8000
./ssl_server: error while loading shared libraries: /lib/libssl.so.0.9.8:
cannot restore segment prot after reloc: Permission denied
Please show me how to solve this error. Thanhks.
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/*****************************************************************************/
/*** ssl_server.c ***/
/*** ***/
/*** Demonstrate an SSL server. ***/
/*****************************************************************************/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <malloc.h>
#include <string.h>
#include <sys/socket.h>
#include <resolv.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#define FAIL -1
/*---------------------------------------------------------------------*/
/*--- OpenListener - create server socket ---*/
/*---------------------------------------------------------------------*/
int OpenListener(int port)
{ int sd;
struct sockaddr_in addr;
sd = socket(PF_INET, SOCK_STREAM, 0);
bzero(&addr, 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;
}
/*---------------------------------------------------------------------*/
/*--- InitServerCTX - initialize SSL server and create context ---*/
/*---------------------------------------------------------------------*/
SSL_CTX* InitServerCTX(void)
{ SSL_METHOD *method;
SSL_CTX *ctx;
//OpenSSL_add_all_algorithms();
OpenSSL_add_all_algorithms(); /* load & register all cryptos,
etc. */
SSL_load_error_strings(); /* load all error messages */
SSL_library_init();
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;
}
/*---------------------------------------------------------------------*/
/*--- LoadCertificates - load from files. ---*/
/*---------------------------------------------------------------------*/
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();
}
}
/*---------------------------------------------------------------------*/
/*--- ShowCerts - print out certificates. ---*/
/*---------------------------------------------------------------------*/
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");
}
/*---------------------------------------------------------------------*/
/*--- Servlet - SSL servlet (contexts can be shared) ---*/
/*---------------------------------------------------------------------*/
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 */
}
/*---------------------------------------------------------------------*/
/*--- main - create SSL socket server. ---*/
/*---------------------------------------------------------------------*/
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);
}
portnum = strings[1];
ctx = InitServerCTX();
LoadCertificates(ctx, "newreq.pem", "newreq.pem");
server = OpenListener(atoi(portnum));
while (1)
{ struct sockaddr_in addr;
int len = sizeof(addr);
SSL *ssl;
int client = accept(server, (struct sockaddr*)&addr, &len);
printf("Connection: %s:%d\n",
inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
ssl = SSL_new(ctx);
SSL_set_fd(ssl, client);
Servlet(ssl);
}
close(server);
SSL_CTX_free(ctx);
}
