Hi,
my problem is solved.
Thanks anyway,
Minh.
-------------------
> Hi Dinh Thao,
> thank you very much for your reply. I have no more problem with
> linking.
> but now I have problem when I compile file client.c and common.c:
>
> [EMAIL PROTECTED]:~/SSL-connection$ gcc client.c -o client -Wall
-lcrypto
> -lssl -lpthread
> /tmp/ccUugnSm.o: In function `main':
> client.c:(.text+0xcb): undefined reference to `init_OpenSSL'
> client.c:(.text+0xfc): undefined reference to `handle_error'
> client.c:(.text+0x13f): undefined reference to `handle_error'
> collect2: ld returned 1 exit status
>
> Can you tell me where is problem?
>
> Thanks, Minh.
> ====================
> Here ist relevant code:
>
> common.h================
> #include <openssl/bio.h>
> #include <openssl/err.h>
> #include <openssl/rand.h>
> #include <openssl/ssl.h>
> #include <openssl/x509v3.h>
>
> #ifndef WIN32
> #include <pthread.h>
> #define THREAD_CC
> #define THREAD_TYPE pthread_t
> #define THREAD_CREATE(tid, entry, arg) pthread_create(&(tid), NULL,
\
> (entry),
(arg))
> #else
> #include <windows.h>
> #define THREAD_CC __cdecl
> #define THREAD_TYPE DWORD
> #define THREAD_CREATE(tid, entry, arg) do { _beginthread((entry), 0,
> (arg));\
> (tid) =
> GetCurrentThreadId(); \
> } while (0)
> #endif
>
> #define PORT "6001"
> #define SERVER "splat.zork.org"
> #define CLIENT "shell.zork.org"
>
> #define int_error(msg) handle_error(__FILE__, __LINE__, msg)
> void handle_error(const char *file, int lineno, const char *msg);
>
> void init_OpenSSL(void);
>
> common.c==========
> #include "common.h"
>
> void handle_error(const char *file, int lineno, const char *msg)
> {
> fprintf(stderr, "** %s:%i %s\n", file, lineno, msg);
> ERR_print_errors_fp(stderr);
> exit(-1);
> }
>
> void init_OpenSSL(void)
> {
> if (!SSL_library_init())
> {
> fprintf(stderr, "** OpenSSL initialization failed!\n");
> exit(-1);
> }
> SSL_load_error_strings();
> }
>
> client.c============
> #include "common.h"
>
> void do_client_loop(BIO *conn)
> {
> int err, nwritten;
> char buf[80];
>
> for (;;)
> {
> if (!fgets(buf, sizeof(buf), stdin))
> break;
> for (nwritten = 0; nwritten < sizeof(buf); nwritten +=
err)
> {
> err = BIO_write(conn, buf + nwritten, strlen(buf) -
> nwritten);
> if (err <= 0)
> return;
> }
> }
> }
>
> int main(int argc, char *argv[])
> {
> BIO *conn;
>
> init_OpenSSL();
>
> conn = BIO_new_connect(SERVER ":" PORT);
> if (!conn)
> int_error("Error creating connection BIO");
>
> if (BIO_do_connect(conn) <= 0)
> int_error("Error connecting to remote machine");
>
> fprintf(stderr, "Connection opened\n");
> do_client_loop(conn);
> fprintf(stderr, "Connection closed\n");
>
> BIO_free(conn);
> return 0;
> }
>
>
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