#include <netinet/in.h>
#include <arpa/inet.h>
#include <gnutls/gnutls.h>
+#include <zlib.h>
static void * get_creds(char *certfile)
{
gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE, cred);
}
+static int deflateRecord(char *buffer, size_t len, char **out, size_t *olen)
+{
+ z_stream zstrm;
+ int r;
+ zstrm.zalloc = Z_NULL;
+ zstrm.zfree = Z_NULL;
+ zstrm.opaque = Z_NULL;
+ if ((r = deflateInit(&zstrm, Z_DEFAULT_COMPRESSION)) != Z_OK)
+ return -1;
+ *out = malloc(len * 2 + 36);
+ if (!out) {
+ deflateEnd(&zstrm);
+ return -1;
+ }
+ zstrm.next_in = buffer;
+ zstrm.avail_in = len;
+ zstrm.next_out = *out + 6;
+ zstrm.avail_out = len * 2 + 30;
+ while ((r = deflate(&zstrm, Z_FINISH)) != Z_STREAM_END &&
+ zstrm.avail_out > 0);
+ if ((r = deflate(&zstrm, Z_FINISH)) != Z_STREAM_END) {
+ deflateEnd(&zstrm);
+ free(*out);
+ return -1;
+ }
+ *olen = zstrm.avail_out + 6;
+ (*out)[0] = 0x1;
+ (*out)[1] = (zstrm.avail_out >> 8);
+ (*out)[2] = (zstrm.avail_out & 0xff);
+ (*out)[3] = (len >> 8);
+ (*out)[4] = (len & 0xff);
+ (*out)[5] = 0x1;
+ deflateEnd(&zstrm);
+ return 0;
+}
+
int main(int argc, char **argv)
{
struct sockaddr_in saddr;
int c;
int r;
char buffer[256];
+ char *out;
+ size_t olen;
gnutls_session_t session;
gnutls_global_init();
session_new(&session);
else
fprintf(stderr, "handshake ok\n");
buffer[0] = 0x40;
- gnutls_record_send(session, buffer, 1);
+ deflateRecord(buffer, 1, &out, &olen);
+ gnutls_record_send(session, out, olen);
+ free(out);
while ((r = gnutls_record_recv(session, buffer, sizeof(buffer))) > 0)
write(1, buffer, r);
close(c);