#include "mutt_ssl.h"
#include "mutt_regex.h"
+/* certificate error bitmap values */
+#define CERTERR_VALID 0
+#define CERTERR_EXPIRED 1
+#define CERTERR_NOTYETVALID 2
+#define CERTERR_REVOKED 4
+#define CERTERR_NOTTRUSTED 8
+#define CERTERR_HOSTNAME 16
+#define CERTERR_SIGNERNOTCA 32
+#define CERTERR_INSECUREALG 64
+
typedef struct _tlssockdata
{
gnutls_session state;
return -1;
}
- ret = gnutls_record_recv (data->state, buf, len);
- if (ret < 0 && gnutls_error_is_fatal(ret) == 1)
- {
- mutt_error ("tls_socket_read (%s)", gnutls_strerror (ret));
- mutt_sleep (4);
- return -1;
+ do {
+ ret = gnutls_record_recv (data->state, buf, len);
+ if (ret < 0 && gnutls_error_is_fatal(ret) == 1)
+ {
+ mutt_error ("tls_socket_read (%s)", gnutls_strerror (ret));
+ mutt_sleep (4);
+ return -1;
+ }
}
+ while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
+
return ret;
}
return 0;
}
+static void tls_get_client_cert (CONNECTION* conn)
+{
+ tlssockdata *data = conn->sockdata;
+ const gnutls_datum_t* crtdata;
+ gnutls_x509_crt_t clientcrt;
+ char* dn;
+ char* cn;
+ char* cnend;
+ size_t dnlen;
+
+ /* get our cert CN if we have one */
+ if (!(crtdata = gnutls_certificate_get_ours (data->state)))
+ return;
+
+ if (gnutls_x509_crt_init (&clientcrt) < 0)
+ {
+ dprint (1, (debugfile, "Failed to init gnutls crt\n"));
+ return;
+ }
+ if (gnutls_x509_crt_import (clientcrt, crtdata, GNUTLS_X509_FMT_DER) < 0)
+ {
+ dprint (1, (debugfile, "Failed to import gnutls client crt\n"));
+ goto err_crt;
+ }
+ /* get length of DN */
+ dnlen = 0;
+ gnutls_x509_crt_get_dn (clientcrt, NULL, &dnlen);
+ if (!(dn = calloc (1, dnlen)))
+ {
+ dprint (1, (debugfile, "could not allocate DN\n"));
+ goto err_crt;
+ }
+ gnutls_x509_crt_get_dn (clientcrt, dn, &dnlen);
+ dprint (2, (debugfile, "client certificate DN: %s\n", dn));
+
+ /* extract CN to use as external user name */
+ if (!(cn = strstr (dn, "CN=")))
+ {
+ dprint (1, (debugfile, "no CN found in DN\n"));
+ goto err_dn;
+ }
+ cn += 3;
+
+ if ((cnend = strstr (dn, ",EMAIL=")))
+ *cnend = '\0';
+
+ /* if we are using a client cert, SASL may expect an external auth name */
+ mutt_account_getuser (&conn->account);
+
+err_dn:
+ FREE (&dn);
+err_crt:
+ gnutls_x509_crt_deinit (clientcrt);
+}
+
static int protocol_priority[] = {GNUTLS_TLS1, GNUTLS_SSL3, 0};
/* tls_negotiate: After TLS state has been initialised, attempt to negotiate
GNUTLS_X509_FMT_PEM);
}
-/*
- gnutls_set_x509_client_key (data->xcred, "", "");
- gnutls_set_x509_cert_callback (data->xcred, cert_callback);
-*/
+ if (SslClientCert)
+ {
+ dprint (2, (debugfile, "Using client certificate %s\n", SslClientCert));
+ gnutls_certificate_set_x509_key_file (data->xcred, SslClientCert,
+ SslClientCert, GNUTLS_X509_FMT_PEM);
+ }
+
+#if HAVE_DECL_GNUTLS_VERIFY_DISABLE_TIME_CHECKS
+ /* disable checking certificate activation/expiration times
+ in gnutls, we do the checks ourselves */
+ gnutls_certificate_set_verify_flags(data->xcred, GNUTLS_VERIFY_DISABLE_TIME_CHECKS);
+#endif
gnutls_init(&data->state, GNUTLS_CLIENT);
/* NB: gnutls_cipher_get_key_size() returns key length in bytes */
conn->ssf = gnutls_cipher_get_key_size (gnutls_cipher_get (data->state)) * 8;
- mutt_message (_("SSL/TLS connection using %s (%s/%s/%s)"),
- gnutls_protocol_get_name (gnutls_protocol_get_version (data->state)),
- gnutls_kx_get_name (gnutls_kx_get (data->state)),
- gnutls_cipher_get_name (gnutls_cipher_get (data->state)),
- gnutls_mac_get_name (gnutls_mac_get (data->state)));
- mutt_sleep (0);
+ tls_get_client_cert (conn);
+
+ if (!option(OPTNOCURSES)) {
+ mutt_message (_("SSL/TLS connection using %s (%s/%s/%s)"),
+ gnutls_protocol_get_name (gnutls_protocol_get_version (data->state)),
+ gnutls_kx_get_name (gnutls_kx_get (data->state)),
+ gnutls_cipher_get_name (gnutls_cipher_get (data->state)),
+ gnutls_mac_get_name (gnutls_mac_get (data->state)));
+ mutt_sleep (0);
+ }
return 0;
}
b64_data.size = fread(b64_data.data, 1, b64_data.size, fd1);
- fclose(fd1);
+ safe_fclose (&fd1);
do {
ret = gnutls_pem_base64_decode_alloc(NULL, &b64_data, &cert);
buf[0] = '\0';
tls_fingerprint (GNUTLS_DIG_MD5, buf, sizeof (buf), cert);
- while ((linestr = mutt_read_line(linestr, &linestrsize, fp, &linenum)) != NULL)
+ while ((linestr = mutt_read_line(linestr, &linestrsize, fp, &linenum, 0)) != NULL)
{
if(linestr[0] == '#' && linestr[1] == 'H')
{
{
regfree(&preg);
FREE(&linestr);
- fclose(fp);
+ safe_fclose (&fp);
return 1;
}
}
}
regfree(&preg);
- fclose(fp);
+ safe_fclose (&fp);
}
/* not found a matching name */
return 0;
}
-static int tls_check_certificate (CONNECTION* conn)
+static int tls_check_preauth (const gnutls_datum_t *certdata,
+ gnutls_certificate_status certstat,
+ const char *hostname, int chainidx, int* certerr,
+ int* savedcert)
{
- tlssockdata *data = conn->sockdata;
- gnutls_session state = data->state;
- char helpstr[LONG_STRING];
- char buf[SHORT_STRING];
- char fpbuf[SHORT_STRING];
- size_t buflen;
- char dn_common_name[SHORT_STRING];
- char dn_email[SHORT_STRING];
- char dn_organization[SHORT_STRING];
- char dn_organizational_unit[SHORT_STRING];
- char dn_locality[SHORT_STRING];
- char dn_province[SHORT_STRING];
- char dn_country[SHORT_STRING];
- MUTTMENU *menu;
- int done, row, i, ret;
- FILE *fp;
- time_t t;
- const gnutls_datum *cert_list;
- unsigned int cert_list_size = 0;
- gnutls_certificate_status certstat;
- char datestr[30];
gnutls_x509_crt cert;
- gnutls_datum pemdata;
- int certerr_expired = 0;
- int certerr_notyetvalid = 0;
- int certerr_hostname = 0;
- int certerr_nottrusted = 0;
- int certerr_revoked = 0;
- int certerr_signernotca = 0;
-
- if (gnutls_auth_get_type(state) != GNUTLS_CRD_CERTIFICATE)
- {
- mutt_error (_("Unable to get certificate from peer"));
- mutt_sleep (2);
- return 0;
- }
-
- certstat = gnutls_certificate_verify_peers(state);
-
- if (certstat == GNUTLS_E_NO_CERTIFICATE_FOUND)
- {
- mutt_error (_("Unable to get certificate from peer"));
- mutt_sleep (2);
- return 0;
- }
- if (certstat < 0)
- {
- mutt_error (_("Certificate verification error (%s)"), gnutls_strerror(certstat));
- mutt_sleep (2);
- return 0;
- }
- /* We only support X.509 certificates (not OpenPGP) at the moment */
- if (gnutls_certificate_type_get(state) != GNUTLS_CRT_X509)
- {
- mutt_error (_("Certificate is not X.509"));
- mutt_sleep (2);
- return 0;
- }
+ *certerr = CERTERR_VALID;
+ *savedcert = 0;
- if (gnutls_x509_crt_init(&cert) < 0)
+ if (gnutls_x509_crt_init (&cert) < 0)
{
mutt_error (_("Error initialising gnutls certificate data"));
mutt_sleep (2);
- return 0;
- }
-
- cert_list = gnutls_certificate_get_peers(state, &cert_list_size);
- if (!cert_list)
- {
- mutt_error (_("Unable to get certificate from peer"));
- mutt_sleep (2);
- return 0;
+ return -1;
}
- /* FIXME: Currently only check first certificate in chain. */
- if (gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER) < 0)
+ if (gnutls_x509_crt_import (cert, certdata, GNUTLS_X509_FMT_DER) < 0)
{
mutt_error (_("Error processing certificate data"));
mutt_sleep (2);
- return 0;
- }
-
- if (gnutls_x509_crt_get_expiration_time(cert) < time(NULL))
- {
- certerr_expired = 1;
+ gnutls_x509_crt_deinit (cert);
+ return -1;
}
- if (gnutls_x509_crt_get_activation_time(cert) > time(NULL))
+ if (option (OPTSSLVERIFYDATES) != M_NO)
{
- certerr_notyetvalid = 1;
+ if (gnutls_x509_crt_get_expiration_time (cert) < time(NULL))
+ *certerr |= CERTERR_EXPIRED;
+ if (gnutls_x509_crt_get_activation_time (cert) > time(NULL))
+ *certerr |= CERTERR_NOTYETVALID;
}
- if (!gnutls_x509_crt_check_hostname(cert, conn->account.host) &&
- !tls_check_stored_hostname (&cert_list[0], conn->account.host))
- {
- certerr_hostname = 1;
- }
+ if (chainidx == 0 && option (OPTSSLVERIFYHOST) != M_NO
+ && !gnutls_x509_crt_check_hostname (cert, hostname)
+ && !tls_check_stored_hostname (certdata, hostname))
+ *certerr |= CERTERR_HOSTNAME;
/* see whether certificate is in our cache (certificates file) */
- if (tls_compare_certificates (&cert_list[0]))
+ if (tls_compare_certificates (certdata))
{
- if (certstat & GNUTLS_CERT_INVALID)
+ *savedcert = 1;
+
+ if (chainidx == 0 && certstat & GNUTLS_CERT_INVALID)
{
/* doesn't matter - have decided is valid because server
- certificate is in our trusted cache */
+ certificate is in our trusted cache */
certstat ^= GNUTLS_CERT_INVALID;
}
- if (certstat & GNUTLS_CERT_SIGNER_NOT_FOUND)
+ if (chainidx == 0 && certstat & GNUTLS_CERT_SIGNER_NOT_FOUND)
{
/* doesn't matter that we haven't found the signer, since
- certificate is in our trusted cache */
+ certificate is in our trusted cache */
certstat ^= GNUTLS_CERT_SIGNER_NOT_FOUND;
}
- if (certstat & GNUTLS_CERT_SIGNER_NOT_CA)
+ if (chainidx <= 1 && certstat & GNUTLS_CERT_SIGNER_NOT_CA)
{
/* Hmm. Not really sure how to handle this, but let's say
- that we don't care if the CA certificate hasn't got the
- correct X.509 basic constraints if server certificate is
- in our cache. */
+ that we don't care if the CA certificate hasn't got the
+ correct X.509 basic constraints if server or first signer
+ certificate is in our cache. */
certstat ^= GNUTLS_CERT_SIGNER_NOT_CA;
}
+ if (chainidx == 0 && certstat & GNUTLS_CERT_INSECURE_ALGORITHM)
+ {
+ /* doesn't matter that it was signed using an insecure
+ algorithm, since certificate is in our trusted cache */
+ certstat ^= GNUTLS_CERT_INSECURE_ALGORITHM;
+ }
}
if (certstat & GNUTLS_CERT_REVOKED)
{
- certerr_revoked = 1;
+ *certerr |= CERTERR_REVOKED;
certstat ^= GNUTLS_CERT_REVOKED;
}
if (certstat & GNUTLS_CERT_INVALID)
{
- certerr_nottrusted = 1;
+ *certerr |= CERTERR_NOTTRUSTED;
certstat ^= GNUTLS_CERT_INVALID;
}
if (certstat & GNUTLS_CERT_SIGNER_NOT_FOUND)
{
/* NB: already cleared if cert in cache */
- certerr_nottrusted = 1;
+ *certerr |= CERTERR_NOTTRUSTED;
certstat ^= GNUTLS_CERT_SIGNER_NOT_FOUND;
}
if (certstat & GNUTLS_CERT_SIGNER_NOT_CA)
{
/* NB: already cleared if cert in cache */
- certerr_signernotca = 1;
+ *certerr |= CERTERR_SIGNERNOTCA;
certstat ^= GNUTLS_CERT_SIGNER_NOT_CA;
}
- /* OK if signed by (or is) a trusted certificate */
- /* we've been zeroing the interesting bits in certstat -
- don't return OK if there are any unhandled bits we don't
- understand */
- if (!(certerr_expired || certerr_notyetvalid ||
- certerr_hostname || certerr_nottrusted) && certstat == 0)
+ if (certstat & GNUTLS_CERT_INSECURE_ALGORITHM)
{
- gnutls_x509_crt_deinit(cert);
- return 1;
+ /* NB: already cleared if cert in cache */
+ *certerr |= CERTERR_INSECUREALG;
+ certstat ^= GNUTLS_CERT_INSECURE_ALGORITHM;
}
+ gnutls_x509_crt_deinit (cert);
+
+ /* we've been zeroing the interesting bits in certstat -
+ don't return OK if there are any unhandled bits we don't
+ understand */
+ if (*certerr == CERTERR_VALID && certstat == 0)
+ return 0;
+
+ return -1;
+}
+
+static int tls_check_one_certificate (const gnutls_datum_t *certdata,
+ gnutls_certificate_status certstat,
+ const char* hostname, int idx, int len)
+{
+ int certerr, savedcert;
+ gnutls_x509_crt cert;
+ char buf[SHORT_STRING];
+ char fpbuf[SHORT_STRING];
+ size_t buflen;
+ char dn_common_name[SHORT_STRING];
+ char dn_email[SHORT_STRING];
+ char dn_organization[SHORT_STRING];
+ char dn_organizational_unit[SHORT_STRING];
+ char dn_locality[SHORT_STRING];
+ char dn_province[SHORT_STRING];
+ char dn_country[SHORT_STRING];
+ time_t t;
+ char datestr[30];
+ MUTTMENU *menu;
+ char helpstr[LONG_STRING];
+ char title[STRING];
+ FILE *fp;
+ gnutls_datum pemdata;
+ int i, row, done, ret;
+
+ if (!tls_check_preauth (certdata, certstat, hostname, idx, &certerr,
+ &savedcert))
+ return 1;
+
+ /* skip signers if insecure algorithm was used */
+ if (idx && (certerr & CERTERR_INSECUREALG))
+ {
+ if (idx == 1)
+ {
+ mutt_error (_("Warning: Server certificate was signed using an insecure algorithm"));
+ mutt_sleep (2);
+ }
+ return 0;
+ }
/* interactive check from user */
- menu = mutt_new_menu ();
+ if (gnutls_x509_crt_init (&cert) < 0)
+ {
+ mutt_error (_("Error initialising gnutls certificate data"));
+ mutt_sleep (2);
+ return 0;
+ }
+
+ if (gnutls_x509_crt_import (cert, certdata, GNUTLS_X509_FMT_DER) < 0)
+ {
+ mutt_error (_("Error processing certificate data"));
+ mutt_sleep (2);
+ gnutls_x509_crt_deinit (cert);
+ return -1;
+ }
+
+ menu = mutt_new_menu (-1);
menu->max = 25;
menu->dialog = (char **) safe_calloc (1, menu->max * sizeof (char *));
for (i = 0; i < menu->max; i++)
strfcpy (menu->dialog[row], _("This certificate belongs to:"), SHORT_STRING);
row++;
- buflen = sizeof(dn_common_name);
- if (gnutls_x509_crt_get_dn_by_oid(cert, GNUTLS_OID_X520_COMMON_NAME, 0, 0,
- dn_common_name, &buflen) != 0)
+ buflen = sizeof (dn_common_name);
+ if (gnutls_x509_crt_get_dn_by_oid (cert, GNUTLS_OID_X520_COMMON_NAME, 0, 0,
+ dn_common_name, &buflen) != 0)
dn_common_name[0] = '\0';
- buflen = sizeof(dn_email);
- if (gnutls_x509_crt_get_dn_by_oid(cert, GNUTLS_OID_PKCS9_EMAIL, 0, 0,
- dn_email, &buflen) != 0)
+ buflen = sizeof (dn_email);
+ if (gnutls_x509_crt_get_dn_by_oid (cert, GNUTLS_OID_PKCS9_EMAIL, 0, 0,
+ dn_email, &buflen) != 0)
dn_email[0] = '\0';
- buflen = sizeof(dn_organization);
- if (gnutls_x509_crt_get_dn_by_oid(cert, GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0,
- dn_organization, &buflen) != 0)
+ buflen = sizeof (dn_organization);
+ if (gnutls_x509_crt_get_dn_by_oid (cert, GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0,
+ dn_organization, &buflen) != 0)
dn_organization[0] = '\0';
- buflen = sizeof(dn_organizational_unit);
- if (gnutls_x509_crt_get_dn_by_oid(cert, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME, 0, 0,
- dn_organizational_unit, &buflen) != 0)
+ buflen = sizeof (dn_organizational_unit);
+ if (gnutls_x509_crt_get_dn_by_oid (cert, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME, 0, 0,
+ dn_organizational_unit, &buflen) != 0)
dn_organizational_unit[0] = '\0';
- buflen = sizeof(dn_locality);
- if (gnutls_x509_crt_get_dn_by_oid(cert, GNUTLS_OID_X520_LOCALITY_NAME, 0, 0,
- dn_locality, &buflen) != 0)
+ buflen = sizeof (dn_locality);
+ if (gnutls_x509_crt_get_dn_by_oid (cert, GNUTLS_OID_X520_LOCALITY_NAME, 0, 0,
+ dn_locality, &buflen) != 0)
dn_locality[0] = '\0';
- buflen = sizeof(dn_province);
- if (gnutls_x509_crt_get_dn_by_oid(cert, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0, 0,
- dn_province, &buflen) != 0)
+ buflen = sizeof (dn_province);
+ if (gnutls_x509_crt_get_dn_by_oid (cert, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0, 0,
+ dn_province, &buflen) != 0)
dn_province[0] = '\0';
- buflen = sizeof(dn_country);
- if (gnutls_x509_crt_get_dn_by_oid(cert, GNUTLS_OID_X520_COUNTRY_NAME, 0, 0,
- dn_country, &buflen) != 0)
+ buflen = sizeof (dn_country);
+ if (gnutls_x509_crt_get_dn_by_oid (cert, GNUTLS_OID_X520_COUNTRY_NAME, 0, 0,
+ dn_country, &buflen) != 0)
dn_country[0] = '\0';
snprintf (menu->dialog[row++], SHORT_STRING, " %s %s", dn_common_name, dn_email);
snprintf (menu->dialog[row++], SHORT_STRING, " %s %s %s",
dn_locality, dn_province, dn_country);
row++;
-
+
strfcpy (menu->dialog[row], _("This certificate was issued by:"), SHORT_STRING);
row++;
- buflen = sizeof(dn_common_name);
- if (gnutls_x509_crt_get_issuer_dn_by_oid(cert, GNUTLS_OID_X520_COMMON_NAME, 0, 0,
- dn_common_name, &buflen) != 0)
+ buflen = sizeof (dn_common_name);
+ if (gnutls_x509_crt_get_issuer_dn_by_oid (cert, GNUTLS_OID_X520_COMMON_NAME, 0, 0,
+ dn_common_name, &buflen) != 0)
dn_common_name[0] = '\0';
- buflen = sizeof(dn_email);
- if (gnutls_x509_crt_get_issuer_dn_by_oid(cert, GNUTLS_OID_PKCS9_EMAIL, 0, 0,
- dn_email, &buflen) != 0)
+ buflen = sizeof (dn_email);
+ if (gnutls_x509_crt_get_issuer_dn_by_oid (cert, GNUTLS_OID_PKCS9_EMAIL, 0, 0,
+ dn_email, &buflen) != 0)
dn_email[0] = '\0';
- buflen = sizeof(dn_organization);
- if (gnutls_x509_crt_get_issuer_dn_by_oid(cert, GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0,
- dn_organization, &buflen) != 0)
+ buflen = sizeof (dn_organization);
+ if (gnutls_x509_crt_get_issuer_dn_by_oid (cert, GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0,
+ dn_organization, &buflen) != 0)
dn_organization[0] = '\0';
- buflen = sizeof(dn_organizational_unit);
- if (gnutls_x509_crt_get_issuer_dn_by_oid(cert, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME, 0, 0,
- dn_organizational_unit, &buflen) != 0)
+ buflen = sizeof (dn_organizational_unit);
+ if (gnutls_x509_crt_get_issuer_dn_by_oid (cert, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME, 0, 0,
+ dn_organizational_unit, &buflen) != 0)
dn_organizational_unit[0] = '\0';
- buflen = sizeof(dn_locality);
- if (gnutls_x509_crt_get_issuer_dn_by_oid(cert, GNUTLS_OID_X520_LOCALITY_NAME, 0, 0,
- dn_locality, &buflen) != 0)
+ buflen = sizeof (dn_locality);
+ if (gnutls_x509_crt_get_issuer_dn_by_oid (cert, GNUTLS_OID_X520_LOCALITY_NAME, 0, 0,
+ dn_locality, &buflen) != 0)
dn_locality[0] = '\0';
- buflen = sizeof(dn_province);
- if (gnutls_x509_crt_get_issuer_dn_by_oid(cert, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0, 0,
- dn_province, &buflen) != 0)
+ buflen = sizeof (dn_province);
+ if (gnutls_x509_crt_get_issuer_dn_by_oid (cert, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0, 0,
+ dn_province, &buflen) != 0)
dn_province[0] = '\0';
- buflen = sizeof(dn_country);
- if (gnutls_x509_crt_get_issuer_dn_by_oid(cert, GNUTLS_OID_X520_COUNTRY_NAME, 0, 0,
- dn_country, &buflen) != 0)
+ buflen = sizeof (dn_country);
+ if (gnutls_x509_crt_get_issuer_dn_by_oid (cert, GNUTLS_OID_X520_COUNTRY_NAME, 0, 0,
+ dn_country, &buflen) != 0)
dn_country[0] = '\0';
snprintf (menu->dialog[row++], SHORT_STRING, " %s %s", dn_common_name, dn_email);
snprintf (menu->dialog[row++], SHORT_STRING, _("This certificate is valid"));
- t = gnutls_x509_crt_get_activation_time(cert);
- snprintf (menu->dialog[row++], SHORT_STRING, _(" from %s"),
- tls_make_date(t, datestr, 30));
+ t = gnutls_x509_crt_get_activation_time (cert);
+ snprintf (menu->dialog[row++], SHORT_STRING, _(" from %s"),
+ tls_make_date (t, datestr, 30));
- t = gnutls_x509_crt_get_expiration_time(cert);
- snprintf (menu->dialog[row++], SHORT_STRING, _(" to %s"),
- tls_make_date(t, datestr, 30));
+ t = gnutls_x509_crt_get_expiration_time (cert);
+ snprintf (menu->dialog[row++], SHORT_STRING, _(" to %s"),
+ tls_make_date (t, datestr, 30));
fpbuf[0] = '\0';
- tls_fingerprint (GNUTLS_DIG_SHA, fpbuf, sizeof (fpbuf), &cert_list[0]);
+ tls_fingerprint (GNUTLS_DIG_SHA, fpbuf, sizeof (fpbuf), certdata);
snprintf (menu->dialog[row++], SHORT_STRING, _("SHA1 Fingerprint: %s"), fpbuf);
fpbuf[0] = '\0';
- tls_fingerprint (GNUTLS_DIG_MD5, fpbuf, sizeof (fpbuf), &cert_list[0]);
+ tls_fingerprint (GNUTLS_DIG_MD5, fpbuf, sizeof (fpbuf), certdata);
snprintf (menu->dialog[row++], SHORT_STRING, _("MD5 Fingerprint: %s"), fpbuf);
- if (certerr_notyetvalid)
+ if (certerr & CERTERR_NOTYETVALID)
{
row++;
strfcpy (menu->dialog[row], _("WARNING: Server certificate is not yet valid"), SHORT_STRING);
}
- if (certerr_expired)
+ if (certerr & CERTERR_EXPIRED)
{
row++;
strfcpy (menu->dialog[row], _("WARNING: Server certificate has expired"), SHORT_STRING);
}
- if (certerr_revoked)
+ if (certerr & CERTERR_REVOKED)
{
row++;
strfcpy (menu->dialog[row], _("WARNING: Server certificate has been revoked"), SHORT_STRING);
}
- if (certerr_hostname)
+ if (certerr & CERTERR_HOSTNAME)
{
row++;
strfcpy (menu->dialog[row], _("WARNING: Server hostname does not match certificate"), SHORT_STRING);
}
- if (certerr_signernotca)
+ if (certerr & CERTERR_SIGNERNOTCA)
{
row++;
strfcpy (menu->dialog[row], _("WARNING: Signer of server certificate is not a CA"), SHORT_STRING);
}
- menu->title = _("TLS/SSL Certificate check");
+ snprintf (title, sizeof (title),
+ _("SSL Certificate check (certificate %d of %d in chain)"),
+ len - idx, len);
+ menu->title = title;
/* certificates with bad dates, or that are revoked, must be
- accepted manually each and every time */
- if (SslCertFile && !certerr_expired && !certerr_notyetvalid && !certerr_revoked)
+ accepted manually each and every time */
+ if (SslCertFile && !savedcert
+ && !(certerr & (CERTERR_EXPIRED | CERTERR_NOTYETVALID
+ | CERTERR_REVOKED)))
{
menu->prompt = _("(r)eject, accept (o)nce, (a)ccept always");
menu->keys = _("roa");
menu->prompt = _("(r)eject, accept (o)nce");
menu->keys = _("ro");
}
-
+
helpstr[0] = '\0';
mutt_make_help (buf, sizeof (buf), _("Exit "), MENU_GENERIC, OP_EXIT);
safe_strcat (helpstr, sizeof (helpstr), buf);
if ((fp = fopen (SslCertFile, "a")))
{
/* save hostname if necessary */
- if (certerr_hostname)
+ if (certerr & CERTERR_HOSTNAME)
{
- fprintf(fp, "#H %s %s\n", conn->account.host, fpbuf);
+ fprintf(fp, "#H %s %s\n", hostname, fpbuf);
done = 1;
}
- if (certerr_nottrusted)
+ if (certerr & CERTERR_NOTTRUSTED)
{
done = 0;
- ret = gnutls_pem_base64_encode_alloc ("CERTIFICATE", &cert_list[0],
+ ret = gnutls_pem_base64_encode_alloc ("CERTIFICATE", certdata,
&pemdata);
if (ret == 0)
{
- if (fwrite(pemdata.data, pemdata.size, 1, fp) == 1)
+ if (fwrite (pemdata.data, pemdata.size, 1, fp) == 1)
{
done = 1;
}
- gnutls_free(pemdata.data);
+ gnutls_free (pemdata.data);
}
}
- fclose (fp);
+ safe_fclose (&fp);
}
if (!done)
{
}
unset_option (OPTUNBUFFEREDINPUT);
mutt_menuDestroy (&menu);
- gnutls_x509_crt_deinit(cert);
+ gnutls_x509_crt_deinit (cert);
+
return (done == 2);
}
+
+/* sanity-checking wrapper for gnutls_certificate_verify_peers */
+static gnutls_certificate_status tls_verify_peers (gnutls_session tlsstate)
+{
+ gnutls_certificate_status certstat;
+
+ certstat = gnutls_certificate_verify_peers (tlsstate);
+ if (!certstat)
+ return certstat;
+
+ if (certstat == GNUTLS_E_NO_CERTIFICATE_FOUND)
+ {
+ mutt_error (_("Unable to get certificate from peer"));
+ mutt_sleep (2);
+ return 0;
+ }
+ if (certstat < 0)
+ {
+ mutt_error (_("Certificate verification error (%s)"),
+ gnutls_strerror (certstat));
+ mutt_sleep (2);
+ return 0;
+ }
+
+ /* We only support X.509 certificates (not OpenPGP) at the moment */
+ if (gnutls_certificate_type_get (tlsstate) != GNUTLS_CRT_X509)
+ {
+ mutt_error (_("Certificate is not X.509"));
+ mutt_sleep (2);
+ return 0;
+ }
+
+ return certstat;
+}
+
+static int tls_check_certificate (CONNECTION* conn)
+{
+ tlssockdata *data = conn->sockdata;
+ gnutls_session state = data->state;
+ const gnutls_datum *cert_list;
+ unsigned int cert_list_size = 0;
+ gnutls_certificate_status certstat;
+ int certerr, i, preauthrc, savedcert, rc = 0;
+
+ if (gnutls_auth_get_type (state) != GNUTLS_CRD_CERTIFICATE)
+ {
+ mutt_error (_("Unable to get certificate from peer"));
+ mutt_sleep (2);
+ return 0;
+ }
+
+ certstat = tls_verify_peers (state);
+
+ cert_list = gnutls_certificate_get_peers (state, &cert_list_size);
+ if (!cert_list)
+ {
+ mutt_error (_("Unable to get certificate from peer"));
+ mutt_sleep (2);
+ return 0;
+ }
+
+ /* tls_verify_peers doesn't check hostname or expiration, so walk
+ * from most specific to least checking these. If we see a saved certificate,
+ * its status short-circuits the remaining checks. */
+ preauthrc = 0;
+ for (i = 0; i < cert_list_size; i++) {
+ rc = tls_check_preauth(&cert_list[i], certstat, conn->account.host, i,
+ &certerr, &savedcert);
+ preauthrc += rc;
+
+ if (savedcert)
+ {
+ if (!preauthrc)
+ return 1;
+ else
+ break;
+ }
+ }
+
+ /* then check interactively, starting from chain root */
+ for (i = cert_list_size - 1; i >= 0; i--)
+ {
+ rc = tls_check_one_certificate (&cert_list[i], certstat, conn->account.host,
+ i, cert_list_size);
+
+ /* add signers to trust set, then reverify */
+ if (i && rc) {
+ rc = gnutls_certificate_set_x509_trust_mem (data->xcred, &cert_list[i],
+ GNUTLS_X509_FMT_DER);
+ if (rc != 1)
+ dprint (1, (debugfile, "error trusting certificate %d: %d\n", i, rc));
+
+ certstat = tls_verify_peers (state);
+ if (!certstat)
+ return 1;
+ }
+ }
+
+ return rc;
+}
projects / software / mutt-debian.git / blobdiff