9f6a16aecf18d849f9659c01d8dbbc7fa5f30c3c
[umurmur.git] / src / ssli_gnutls.c
1 #include "ssl.h"
2 #include "conf.h"
3 #include "log.h"
4
5 static gnutls_dh_params_t dhParameters;
6 static gnutls_certificate_credentials_t certificate;
7
8 static const char * ciphers = "SECURE128:-VERS-DTLS-ALL:-VERS-SSL3.0:-VERS-TLS1.0:+COMP_ALL";
9 static gnutls_priority_t cipherCache;
10
11 void initializeCertificate()
12   {
13   char* certificatePath = (char*) getStrConf(CERTIFICATE);
14
15   if(!certificatePath) {
16     Log_fatal("No certificate file specified.");
17   }
18
19   char* keyPath = (char*) getStrConf(KEY);
20
21   if(!keyPath) {
22     Log_fatal("No key file specified");
23   }
24
25   gnutls_certificate_allocate_credentials(&certificate);
26
27   int error = gnutls_certificate_set_x509_key_file(certificate, certificatePath, keyPath, GNUTLS_X509_FMT_PEM);
28
29   if( error != GNUTLS_E_SUCCESS ) {
30     Log_fatal("Could not open key (%s) or certificate (%s).", keyPath, certificatePath);
31   }
32
33   }
34
35 void SSLi_init()
36   {
37   unsigned const bitCount = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, GNUTLS_SEC_PARAM_MEDIUM);
38
39   gnutls_dh_params_init(&dhParameters);
40   gnutls_dh_params_generate2(dhParameters, bitCount);
41
42 #if GNUTLS_VERSION_NUMBER < 0x030300
43   gnutls_global_init();
44 #endif
45
46   gnutls_priority_init(&cipherCache, ciphers, NULL);
47
48   initializeCertificate();
49
50   Log_info("Sucessfully initialized GNUTLS version %s", gnutls_check_version(NULL));
51
52   }
53
54 void SSLi_deinit()
55   {
56   gnutls_certificate_free_credentials(certificate);
57   gnutls_priority_deinit(cipherCache);
58   gnutls_global_deinit();
59   }
60
61 SSL_handle_t * SSLi_newconnection( int * fileDescriptor, bool_t * isSSLReady )
62   {
63   gnutls_session_t * session; // Maybe we need to calloc here
64
65   gnutls_init(session, GNUTLS_SERVER);
66   gnutls_priority_set(*session, cipherCache);
67   gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE, certificate);
68
69   gnutls_certificate_server_set_request(*session, GNUTLS_CERT_REQUIRE);
70
71   gnutls_transport_set_int(*session, *fileDescriptor);
72
73   int error;
74   do {
75   gnutls_handshake(*session);
76   } while(error < GNUTLS_E_SUCCESS && !gnutls_error_is_fatal(error));
77
78   if ( error < GNUTLS_E_SUCCESS ) {
79     Log_fatal("TLS handshake failed with error %i (%s).", error, gnutls_strerror(error));
80   }
81
82   return session;
83   }
84
85 bool_t SSLi_getSHA1Hash(SSL_handle_t *ssl, uint8_t *hash)
86   {
87   *hash = 0;
88   return true;
89   }