static int
_gsasl_listmech (Gsasl * ctx,
Gsasl_mechanism * mechs,
size_t n_mechs, char **out, int clientp)
{
Gsasl_session *sctx;
char *list;
size_t i;
int rc;
list = calloc (n_mechs + 1, GSASL_MAX_MECHANISM_SIZE + 1);
if (!list)
return GSASL_MALLOC_ERROR;
for (i = 0; i < n_mechs; i++)
{
if (clientp)
rc = gsasl_client_start (ctx, mechs[i].name, &sctx);
else
rc = gsasl_server_start (ctx, mechs[i].name, &sctx);
if (rc == GSASL_OK)
{
gsasl_finish (sctx);
strcat (list, mechs[i].name);
if (i < n_mechs - 1)
strcat (list, " ");
}
}
*out = list;
return GSASL_OK;
}
static void
client (Gsasl * ctx)
{
Gsasl_session *session;
const char *mech = "PLAIN";
int rc;
/* Create new authentication session. */
if ((rc = gsasl_client_start (ctx, mech, &session)) != GSASL_OK)
{
printf ("Cannot initialize client (%d): %s\n", rc, gsasl_strerror (rc));
return;
}
/* Set username and password in session handle. This info will be
lost when this session is deallocated below. */
gsasl_property_set (session, GSASL_AUTHID, "jas");
gsasl_property_set (session, GSASL_PASSWORD, "secret");
/* Do it. */
client_authenticate (session);
/* Cleanup. */
gsasl_finish (session);
}
static void
smtp (FILE * fh, Gsasl * ctx)
{
char *line = NULL;
size_t n = 0;
int rc;
print (fh, "220 localhost ESMTP GNU SASL smtp-server\n");
while (gettrimline (&line, &n, fh) >= 0)
{
if (strncmp (line, "EHLO ", 5) == 0 || strncmp (line, "ehlo ", 5) == 0)
{
char *mechlist;
rc = gsasl_server_mechlist (ctx, &mechlist);
if (rc != GSASL_OK)
{
print (fh, "221 localhost gsasl_server_mechlist (%d): %s\n",
rc, gsasl_strerror (rc));
goto done;
}
print (fh, "250-localhost\n");
print (fh, "250 AUTH %s\n", mechlist);
gsasl_free (mechlist);
}
else if (strncmp (line, "AUTH ", 5) == 0
|| strncmp (line, "auth ", 5) == 0)
{
Gsasl_session *session = NULL;
if ((rc = gsasl_server_start (ctx, line + 5, &session)) != GSASL_OK)
{
print (fh, "221 localhost gsasl_server_start (%d): %s\n",
rc, gsasl_strerror (rc));
goto done;
}
server_auth (fh, session);
gsasl_finish (session);
}
else if (strncmp (line, "QUIT", 4) == 0
|| strncmp (line, "quit", 4) == 0)
{
print (fh, "221 localhost QUIT\n");
goto done;
}
else
print (fh, "500 unrecognized command\n");
}
print (fh, "221 localhost getline failure\n");
done:
free (line);
}
END_TEST
START_TEST (test_saslplugin_request_cram_md5)
{
g_print("Starting test_saslplugin_request_cram_md5\n");
gpointer plugin;
Gsasl *gsasl_context;
Gsasl_session *gsasl_session;
plugin = g_object_new(GSIGNOND_TYPE_SASL_PLUGIN, NULL);
fail_if(plugin == NULL);
fail_if (gsasl_init (&gsasl_context) != GSASL_OK);
fail_if (gsasl_server_start (gsasl_context,
"CRAM-MD5",
&gsasl_session) != GSASL_OK);
GSignondSessionData* result = NULL;
GSignondSessionData* result_final = NULL;
GError* error = NULL;
g_signal_connect(plugin, "response-final", G_CALLBACK(response_callback), &result_final);
g_signal_connect(plugin, "response",
G_CALLBACK(response_callback), &result);
g_signal_connect(plugin, "error", G_CALLBACK(error_callback), &error);
GSignondSessionData* data = gsignond_dictionary_new();
char* server_challenge;
fail_if(gsasl_step64(gsasl_session, "", &server_challenge) != GSASL_NEEDS_MORE);
gsignond_dictionary_set_string(data, "ChallengeBase64", server_challenge);
free(server_challenge);
gsignond_session_data_set_username(data, "*****@*****.**");
gsignond_session_data_set_secret(data, "megapassword");
gsignond_plugin_request_initial(plugin, data, NULL, "CRAM-MD5");
fail_if(result != NULL);
fail_if(result_final == NULL);
fail_if(error != NULL);
const gchar* response = gsignond_dictionary_get_string(result_final,
"ResponseBase64");
char *response_decoded;
size_t response_decoded_len;
fail_if(gsasl_base64_from(response, strlen(response), &response_decoded,
&response_decoded_len) != GSASL_OK);
fail_if(strncmp(response_decoded, "*****@*****.**", strlen("*****@*****.**")) != 0);
free(response_decoded);
gsignond_dictionary_unref(result_final);
result_final = NULL;
gsasl_finish(gsasl_session);
gsasl_done(gsasl_context);
gsignond_dictionary_unref(data);
g_object_unref(plugin);
}
SASLSession::~SASLSession()
{
gsasl_finish(m_gsaslSession);
m_gsaslSession = 0;
gsasl_done(m_gsaslContext);
m_gsaslContext = 0;
}
/**
* gsasl_client_suggest_mechanism:
* @ctx: libgsasl handle.
* @mechlist: input character array with SASL mechanism names,
* separated by invalid characters (e.g. SPC).
*
* Given a list of mechanisms, suggest which to use.
*
* Return value: Returns name of "best" SASL mechanism supported by
* the libgsasl client which is present in the input string.
**/
const char *
gsasl_client_suggest_mechanism (Gsasl * ctx, const char *mechlist)
{
size_t mechlist_len, target_mech, i;
mechlist_len = mechlist ? strlen (mechlist) : 0;
target_mech = ctx->n_client_mechs; /* ~ no target */
for (i = 0; i < mechlist_len;)
{
size_t len;
len = strspn (mechlist + i, GSASL_VALID_MECHANISM_CHARACTERS);
if (!len)
++i;
else
{
size_t j;
/* Assumption: the mechs array is sorted by preference
* from low security to high security. */
for (j = (target_mech < ctx->n_client_mechs ? target_mech + 1 : 0);
j < ctx->n_client_mechs; ++j)
{
if (strncmp (ctx->client_mechs[j].name, mechlist + i, len) == 0)
{
Gsasl_session *sctx;
if (gsasl_client_start (ctx, ctx->client_mechs[j].name,
&sctx) == GSASL_OK)
{
gsasl_finish (sctx);
target_mech = j;
}
break;
}
}
i += len + 1;
}
}
return target_mech < ctx->n_client_mechs ?
ctx->client_mechs[target_mech].name : NULL;
}
static void
client (Gsasl * ctx)
{
Gsasl_session *session;
const char *mech = "SECURID";
int rc;
/* Create new authentication session. */
if ((rc = gsasl_client_start (ctx, mech, &session)) != GSASL_OK)
{
printf ("Cannot initialize client (%d): %s\n", rc, gsasl_strerror (rc));
return;
}
/* Do it. */
client_authenticate (session);
/* Cleanup. */
gsasl_finish (session);
}
static char *
sasl_auth_plain(
char *user,
char *pass)
{
Gsasl *ctx = NULL;
Gsasl_session *session;
char *p = NULL;
const char *mech = "PLAIN";
if (gsasl_init(&ctx) != GSASL_OK) /* TODO: do this only once at startup */
return p;
if (gsasl_client_start(ctx, mech, &session) != GSASL_OK) {
gsasl_done(ctx);
return p;
}
gsasl_property_set(session, GSASL_AUTHID, user);
gsasl_property_set(session, GSASL_PASSWORD, pass);
if (gsasl_step64(session, NULL, &p) != GSASL_OK)
FreeAndNull(p);
gsasl_finish(session);
gsasl_done(ctx);
return p;
}
static int
start (Gsasl * ctx,
const char *mech,
Gsasl_session ** sctx,
size_t n_mechs, Gsasl_mechanism * mechs, int clientp)
{
Gsasl_session *out;
int res;
out = calloc (1, sizeof (*out));
if (out == NULL)
return GSASL_MALLOC_ERROR;
res = setup (ctx, mech, out, n_mechs, mechs, clientp);
if (res != GSASL_OK)
{
gsasl_finish (out);
return res;
}
*sctx = out;
return GSASL_OK;
}
static int
sasl_auth(dico_stream_t str, char *mechanism, char *initresp,
Gsasl_session **psess)
{
int rc;
Gsasl_session *sess_ctx;
char *input;
char *output;
char *inbuf;
size_t insize;
struct sasl_data sdata = { NULL, 0 };
if (disabled_mechanism_p(mechanism))
return RC_NOMECH;
rc = gsasl_server_start (ctx, mechanism, &sess_ctx);
if (rc != GSASL_OK) {
dico_log(L_ERR, 0, _("SASL gsasl_server_start: %s"),
gsasl_strerror(rc));
return rc == GSASL_UNKNOWN_MECHANISM ? RC_NOMECH : RC_FAIL;
}
gsasl_callback_hook_set(ctx, &sdata);
output = NULL;
if (initresp) {
inbuf = xstrdup(initresp);
insize = strlen(initresp) + 1;
} else {
inbuf = NULL;
insize = 0;
}
input = inbuf;
while ((rc = gsasl_step64(sess_ctx, input, &output)) == GSASL_NEEDS_MORE) {
send_challenge(str, output);
free(output);
output = NULL;
if (get_sasl_response(str, &input, &inbuf, &insize))
return RC_FAIL;
}
if (rc != GSASL_OK) {
dico_log(L_ERR, 0, _("GSASL error: %s"), gsasl_strerror(rc));
free(output);
free(inbuf);
gsasl_finish(sess_ctx);
return RC_FAIL;
}
/* Some SASL mechanisms output data when GSASL_OK is returned */
if (output[0])
send_challenge(str, output);
free(output);
free(inbuf);
if (sdata.username == NULL) {
dico_log(L_ERR, 0, _("GSASL %s: cannot get username"), mechanism);
gsasl_finish(sess_ctx);
return RC_FAIL;
}
user_name = xstrdup(sdata.username);
if (sdata.anon) {
if (sasl_anon_groups) {
user_groups = xdico_list_create();
dico_list_iterate (sasl_anon_groups, _append_item, user_groups);
}
} else
dico_udb_get_groups(user_db, sdata.username, &user_groups);
check_db_visibility();
*psess = sess_ctx;
return RC_SUCCESS;
}
void
doit (void)
{
Gsasl *ctx = NULL;
Gsasl_session *server = NULL, *client = NULL;
char *s1 = NULL, *s2 = NULL;
int rc, res1, res2;
if (getenv ("GNUGSS") && strcmp (getenv ("GNUGSS"), "no") == 0)
{
fail ("Not using GNU GSS, skipping self-test.\n");
exit (77);
}
rc = gsasl_init (&ctx);
if (rc != GSASL_OK)
{
fail ("gsasl_init() failed (%d):\n%s\n", rc, gsasl_strerror (rc));
return;
}
if (!gsasl_client_support_p (ctx, "GS2-KRB5")
|| !gsasl_server_support_p (ctx, "GS2-KRB5"))
{
gsasl_done (ctx);
fail ("No support for GS2-KRB5.\n");
exit (77);
}
gsasl_callback_set (ctx, callback);
for (i = 0; i < 5; i++)
{
bool client_first = (i % 2) == 0;
rc = gsasl_server_start (ctx, "GS2-KRB5", &server);
if (rc != GSASL_OK)
{
fail ("gsasl_server_start() failed (%d):\n%s\n",
rc, gsasl_strerror (rc));
return;
}
rc = gsasl_client_start (ctx, "GS2-KRB5", &client);
if (rc != GSASL_OK)
{
fail ("gsasl_client_start() failed (%d):\n%s\n",
rc, gsasl_strerror (rc));
return;
}
if (client_first)
{
rc = gsasl_step64 (client, NULL, &s1);
if (rc != GSASL_OK && rc != GSASL_NEEDS_MORE)
{
fail ("gsasl_step64 failed (%d):\n%s\n", rc,
gsasl_strerror (rc));
return;
}
if (debug)
printf ("C: %s [%c]\n", s1, ret_char (rc));
}
do
{
res1 = gsasl_step64 (server, s1, &s2);
if (s1 == NULL && res1 == GSASL_OK)
fail ("gsasl_step64 direct success?\n");
if (s1)
{
gsasl_free (s1);
s1 = NULL;
}
if (res1 != GSASL_OK && res1 != GSASL_NEEDS_MORE)
{
fail ("gsasl_step64 (1) failed (%d):\n%s\n", res1,
gsasl_strerror (res1));
return;
}
if (debug)
printf ("S: %s [%c]\n", s2, ret_char (res1));
res2 = gsasl_step64 (client, s2, &s1);
gsasl_free (s2);
if (res2 != GSASL_OK && res2 != GSASL_NEEDS_MORE)
{
fail ("gsasl_step64 (2) failed (%d):\n%s\n", res2,
gsasl_strerror (res2));
return;
}
if (debug)
printf ("C: %s [%c]\n", s1, ret_char (res2));
}
while (res1 != GSASL_OK || res2 != GSASL_OK);
if (s1)
{
gsasl_free (s1);
s1 = NULL;
}
if (debug)
printf ("\n");
gsasl_finish (client);
gsasl_finish (server);
}
gsasl_done (ctx);
}
static void sasl_authenticate( SV *client, mongo_link *link ) {
Gsasl *ctx = NULL;
Gsasl_session *session;
SV *username, *mechanism, *conv_id;
HV *result; /* response document from mongod */
char *p, *buf; /* I/O buffers for gsasl */
int rc;
char out_buf[8192];
mechanism = perl_mongo_call_method( client, "sasl_mechanism", 0, 0 );
if ( !SvOK( mechanism ) ) {
croak( "MongoDB: Could not retrieve SASL mechanism from client object\n" );
}
if ( strncmp( "PLAIN", SvPV_nolen( mechanism ), 5 ) == 0 ) {
/* SASL PLAIN does not require a libgsasl conversation loop, so we can handle it elsewhere */
return perl_mongo_call_method( client, "_sasl_plain_authenticate", 0, 0 );
}
if ( ( rc = gsasl_init( &ctx ) ) != GSASL_OK ) {
croak( "MongoDB: Cannot initialize libgsasl (%d): %s\n", rc, gsasl_strerror(rc) );
}
if ( ( rc = gsasl_client_start( ctx, SvPV_nolen( mechanism ), &session ) ) != GSASL_OK ) {
croak( "MongoDB: Cannot initialize SASL client (%d): %s\n", rc, gsasl_strerror(rc) );
}
username = perl_mongo_call_method( client, "username", 0, 0 );
if ( !SvOK( username ) ) {
croak( "MongoDB: Cannot start SASL session without username. Specify username in constructor\n" );
}
gsasl_property_set( session, GSASL_SERVICE, "mongodb" );
gsasl_property_set( session, GSASL_HOSTNAME, link->master->host );
gsasl_property_set( session, GSASL_AUTHID, SvPV_nolen( username ) );
rc = gsasl_step64( session, "", &p );
if ( ( rc != GSASL_OK ) && ( rc != GSASL_NEEDS_MORE ) ) {
croak( "MongoDB: No data from GSSAPI. Did you run kinit?\n" );
}
if ( ! strncpy( out_buf, p, 8192 ) ) {
croak( "MongoDB: Unable to copy SASL output buffer\n" );
}
gsasl_free( p );
result = (HV *)SvRV( perl_mongo_call_method( client, "_sasl_start", 0, 2, newSVpv( out_buf, 0 ), mechanism ) );
#if 0
fprintf( stderr, "result conv id = [%s]\n", SvPV_nolen( *hv_fetch( result, "conversationId", 14, FALSE ) ) );
fprintf( stderr, "result payload = [%s]\n", SvPV_nolen( *hv_fetch( result, "payload", 7, FALSE ) ) );
#endif
buf = SvPV_nolen( *hv_fetch( result, "payload", 7, FALSE ) );
conv_id = *hv_fetch( result, "conversationId", 14, FALSE );
do {
rc = gsasl_step64( session, buf, &p );
if ( ( rc != GSASL_OK ) && ( rc != GSASL_NEEDS_MORE ) ) {
croak( "MongoDB: SASL step error (%d): %s\n", rc, gsasl_strerror(rc) );
}
if ( ! strncpy( out_buf, p, 8192 ) ) {
croak( "MongoDB: Unable to copy SASL output buffer\n" );
}
gsasl_free( p );
result = (HV *)SvRV( perl_mongo_call_method( client, "_sasl_continue", 0, 2, newSVpv( out_buf, 0 ), conv_id ) );
#if 0
fprintf( stderr, "result conv id = [%s]\n", SvPV_nolen( *hv_fetch( result, "conversationId", 14, FALSE ) ) );
fprintf( stderr, "result payload = [%s]\n", SvPV_nolen( *hv_fetch( result, "payload", 7, FALSE ) ) );
#endif
buf = SvPV_nolen( *hv_fetch( result, "payload", 7, FALSE ) );
} while( rc == GSASL_NEEDS_MORE );
if ( rc != GSASL_OK ) {
croak( "MongoDB: SASL Authentication error (%d): %s\n", rc, gsasl_strerror(rc) );
}
gsasl_finish( session );
gsasl_done( ctx );
}
END_TEST
START_TEST (test_saslplugin_request_scram_sha_1)
{
g_print("Starting test_saslplugin_request_scram_sha_1\n");
gpointer plugin;
Gsasl *gsasl_context;
Gsasl_session *gsasl_session;
plugin = g_object_new(GSIGNOND_TYPE_SASL_PLUGIN, NULL);
fail_if(plugin == NULL);
fail_if (gsasl_init (&gsasl_context) != GSASL_OK);
fail_if (gsasl_server_start (gsasl_context,
"SCRAM-SHA-1",
&gsasl_session) != GSASL_OK);
GSignondSessionData* result = NULL;
GSignondSessionData* result_final = NULL;
GError* error = NULL;
g_signal_connect(plugin, "response-final", G_CALLBACK(response_callback), &result_final);
g_signal_connect(plugin, "response",
G_CALLBACK(response_callback), &result);
g_signal_connect(plugin, "error", G_CALLBACK(error_callback), &error);
GSignondSessionData* data = gsignond_dictionary_new();
char* server_challenge;
fail_if(gsasl_step64(gsasl_session, "", &server_challenge) != GSASL_NEEDS_MORE);
gsignond_dictionary_set_string(data, "ChallengeBase64", server_challenge);
free(server_challenge);
gsignond_session_data_set_username(data, "*****@*****.**");
gsignond_session_data_set_secret(data, "megapassword");
gsignond_plugin_request_initial(plugin, data, NULL, "SCRAM-SHA-1");
fail_if(result == NULL);
fail_if(result_final != NULL);
fail_if(error != NULL);
gsasl_property_set(gsasl_session, GSASL_PASSWORD, "megapassword");
fail_if (gsasl_step64(gsasl_session,
gsignond_dictionary_get_string(result,
"ResponseBase64"),
&server_challenge) != GSASL_NEEDS_MORE);
gsignond_dictionary_unref(result);
result = NULL;
gsignond_dictionary_set_string(data, "ChallengeBase64", server_challenge);
free(server_challenge);
gsignond_plugin_request(plugin, data);
fail_if(result == NULL);
fail_if(result_final != NULL);
fail_if(error != NULL);
fail_if (gsasl_step64(gsasl_session,
gsignond_dictionary_get_string(result,
"ResponseBase64"),
&server_challenge) != GSASL_OK);
gsignond_dictionary_unref(result);
result = NULL;
gsignond_dictionary_set_string(data, "ChallengeBase64", server_challenge);
free(server_challenge);
gsignond_plugin_request(plugin, data);
fail_if(result != NULL);
fail_if(result_final == NULL);
fail_if(error != NULL);
fail_if(strlen(gsignond_dictionary_get_string(result_final,
"ResponseBase64")) > 0);
gsignond_dictionary_unref(result_final);
result_final = NULL;
gsasl_finish(gsasl_session);
gsasl_done(gsasl_context);
gsignond_dictionary_unref(data);
g_object_unref(plugin);
}
int
main (int argc, char *argv[])
{
Gsasl *ctx = NULL;
int res;
char *in;
char *connect_hostname = NULL;
char *connect_service = NULL;
#ifdef HAVE_LIBGNUTLS
gnutls_anon_client_credentials anoncred;
gnutls_certificate_credentials x509cred;
#endif
set_program_name (argv[0]);
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
/* This is necessary for modern MinGW compilers that provide working
getaddrinfo function, which results in gnulib not detecting that
it is broken. The proper fix is for gnulib to wrap the
getaddrinfo call and initialize Windows sockets in the
wrapper. */
(void) gl_sockets_startup (SOCKETS_1_1);
if (cmdline_parser (argc, argv, &args_info) != 0)
return EXIT_FAILURE;
if (args_info.version_given)
{
const char *p = PACKAGE_NAME;
if (strcmp (gsasl_check_version (NULL), PACKAGE_VERSION) != 0)
p = PACKAGE_STRING;
version_etc (stdout, "gsasl", p, gsasl_check_version (NULL),
"Simon Josefsson", (char *) NULL);
return EXIT_SUCCESS;
}
if (args_info.help_given)
usage (EXIT_SUCCESS);
if (!(args_info.client_flag || args_info.client_given) &&
!args_info.server_given &&
!args_info.client_mechanisms_flag && !args_info.server_mechanisms_flag)
{
error (0, 0, _("missing argument"));
usage (EXIT_FAILURE);
}
if ((args_info.x509_cert_file_arg && !args_info.x509_key_file_arg) ||
(!args_info.x509_cert_file_arg && args_info.x509_key_file_arg))
error (EXIT_FAILURE, 0,
_("need both --x509-cert-file and --x509-key-file"));
if (args_info.starttls_flag && args_info.no_starttls_flag)
error (EXIT_FAILURE, 0,
_("cannot use both --starttls and --no-starttls"));
if (args_info.smtp_flag && args_info.imap_flag)
error (EXIT_FAILURE, 0, _("cannot use both --smtp and --imap"));
if (!args_info.connect_given && args_info.inputs_num == 0 &&
!args_info.client_given && !args_info.server_given &&
!args_info.client_mechanisms_flag && !args_info.server_mechanisms_flag)
{
cmdline_parser_print_help ();
emit_bug_reporting_address ();
return EXIT_SUCCESS;
}
if (args_info.connect_given)
{
if (strrchr (args_info.connect_arg, ':'))
{
connect_hostname = xstrdup (args_info.connect_arg);
*strrchr (connect_hostname, ':') = '\0';
connect_service =
xstrdup (strrchr (args_info.connect_arg, ':') + 1);
}
else
{
connect_hostname = xstrdup (args_info.connect_arg);
if (args_info.smtp_flag)
connect_service = xstrdup ("smtp");
else
connect_service = xstrdup ("imap");
}
}
else if (args_info.inputs_num > 0)
{
connect_hostname = args_info.inputs[0];
if (args_info.inputs_num > 1)
connect_service = args_info.inputs[1];
else if (args_info.smtp_flag)
connect_service = xstrdup ("smtp");
else
connect_service = xstrdup ("imap");
}
if (connect_service && !args_info.smtp_flag && !args_info.imap_flag)
{
if (strcmp (connect_service, "25") == 0 ||
strcmp (connect_service, "smtp") == 0)
args_info.smtp_flag = 1;
else
args_info.imap_flag = 1;
}
if (args_info.imap_flag && !args_info.service_given)
args_info.service_arg = xstrdup ("imap");
if (args_info.smtp_flag && !args_info.service_given)
args_info.service_arg = xstrdup ("smtp");
if (args_info.imap_flag || args_info.smtp_flag)
args_info.no_client_first_flag = 1;
if (connect_hostname && !args_info.hostname_arg)
args_info.hostname_arg = xstrdup (connect_hostname);
if (!isatty (STDOUT_FILENO))
setvbuf (stdout, NULL, _IOLBF, BUFSIZ);
res = gsasl_init (&ctx);
if (res != GSASL_OK)
error (EXIT_FAILURE, 0, _("initialization failure: %s"),
gsasl_strerror (res));
gsasl_callback_set (ctx, callback);
if (args_info.client_mechanisms_flag || args_info.server_mechanisms_flag)
{
char *mechs;
if (args_info.client_mechanisms_flag)
res = gsasl_client_mechlist (ctx, &mechs);
else
res = gsasl_server_mechlist (ctx, &mechs);
if (res != GSASL_OK)
error (EXIT_FAILURE, 0, _("error listing mechanisms: %s"),
gsasl_strerror (res));
if (!args_info.quiet_given)
{
if (args_info.client_mechanisms_flag)
fprintf (stderr,
_("This client supports the following mechanisms:\n"));
else
fprintf (stderr,
_("This server supports the following mechanisms:\n"));
}
fprintf (stdout, "%s\n", mechs);
free (mechs);
return EXIT_SUCCESS;
}
if (args_info.connect_given || args_info.inputs_num > 0)
{
struct addrinfo hints;
struct addrinfo *ai0, *ai;
memset (&hints, 0, sizeof (hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_socktype = SOCK_STREAM;
res = getaddrinfo (connect_hostname, connect_service, &hints, &ai0);
if (res != 0)
error (EXIT_FAILURE, 0, "%s: %s", connect_hostname,
gai_strerror (res));
for (ai = ai0; ai; ai = ai->ai_next)
{
fprintf (stderr, "Trying %s...\n", quote (ai->ai_canonname ?
ai->ai_canonname :
connect_hostname));
sockfd = socket (ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (sockfd < 0)
{
error (0, errno, "socket");
continue;
}
if (connect (sockfd, ai->ai_addr, ai->ai_addrlen) < 0)
{
int save_errno = errno;
close (sockfd);
sockfd = -1;
error (0, save_errno, "connect");
continue;
}
break;
}
if (sockfd < 0)
error (EXIT_FAILURE, errno, "socket");
freeaddrinfo (ai);
}
if (!greeting ())
return 1;
#ifdef HAVE_LIBGNUTLS
if (sockfd && !args_info.no_starttls_flag &&
(args_info.starttls_flag || has_starttls ()))
{
res = gnutls_global_init ();
if (res < 0)
error (EXIT_FAILURE, 0, _("GnuTLS global initialization failed: %s"),
gnutls_strerror (res));
res = gnutls_init (&session, GNUTLS_CLIENT);
if (res < 0)
error (EXIT_FAILURE, 0, _("GnuTLS initialization failed: %s"),
gnutls_strerror (res));
res = gnutls_set_default_priority (session);
if (res < 0)
error (EXIT_FAILURE, 0, _("setting GnuTLS defaults failed: %s"),
gnutls_strerror (res));
res = gnutls_anon_allocate_client_credentials (&anoncred);
if (res < 0)
error (EXIT_FAILURE, 0,
_("allocating anonymous GnuTLS credential: %s"),
gnutls_strerror (res));
res = gnutls_credentials_set (session, GNUTLS_CRD_ANON, anoncred);
if (res < 0)
error (EXIT_FAILURE, 0, _("setting anonymous GnuTLS credential: %s"),
gnutls_strerror (res));
res = gnutls_certificate_allocate_credentials (&x509cred);
if (res < 0)
error (EXIT_FAILURE, 0, _("allocating X.509 GnuTLS credential: %s"),
gnutls_strerror (res));
if (args_info.x509_cert_file_arg && args_info.x509_key_file_arg)
res = gnutls_certificate_set_x509_key_file
(x509cred, args_info.x509_cert_file_arg,
args_info.x509_key_file_arg, GNUTLS_X509_FMT_PEM);
if (res != GNUTLS_E_SUCCESS)
error (EXIT_FAILURE, 0, _("loading X.509 GnuTLS credential: %s"),
gnutls_strerror (res));
if (args_info.x509_ca_file_arg)
{
res = gnutls_certificate_set_x509_trust_file
(x509cred, args_info.x509_ca_file_arg, GNUTLS_X509_FMT_PEM);
if (res < 0)
error (EXIT_FAILURE, 0, _("no X.509 CAs found: %s"),
gnutls_strerror (res));
if (res == 0)
error (EXIT_FAILURE, 0, _("no X.509 CAs found"));
}
res = gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE,
x509cred);
if (res < 0)
error (EXIT_FAILURE, 0, _("setting X.509 GnuTLS credential: %s"),
gnutls_strerror (res));
if (args_info.priority_arg)
{
const char *err_pos;
res = gnutls_priority_set_direct (session, args_info.priority_arg,
&err_pos);
if (res < 0)
error (EXIT_FAILURE, 0,
_("setting GnuTLS cipher priority (%s): %s\n"),
gnutls_strerror (res), err_pos);
}
gnutls_transport_set_ptr (session, (gnutls_transport_ptr)
(unsigned long) sockfd);
if (!starttls ())
return 1;
res = gnutls_handshake (session);
if (res < 0)
error (EXIT_FAILURE, 0, _("GnuTLS handshake failed: %s"),
gnutls_strerror (res));
if (args_info.x509_ca_file_arg)
{
unsigned int status;
res = gnutls_certificate_verify_peers2 (session, &status);
if (res < 0)
error (EXIT_FAILURE, 0, _("verifying peer certificate: %s"),
gnutls_strerror (res));
if (status & GNUTLS_CERT_INVALID)
error (EXIT_FAILURE, 0, _("server certificate is not trusted"));
if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
error (EXIT_FAILURE, 0,
_("server certificate hasn't got a known issuer"));
if (status & GNUTLS_CERT_REVOKED)
error (EXIT_FAILURE, 0, _("server certificate has been revoked"));
if (status != 0)
error (EXIT_FAILURE, 0,
_("could not verify server certificate (rc=%d)"), status);
}
#if HAVE_GNUTLS_SESSION_CHANNEL_BINDING
if (!args_info.no_cb_flag)
{
gnutls_datum cb;
res = gnutls_session_channel_binding (session,
GNUTLS_CB_TLS_UNIQUE, &cb);
if (res != GNUTLS_E_SUCCESS)
error (EXIT_FAILURE, 0, _("getting channel binding failed: %s"),
gnutls_strerror (res));
res = gsasl_base64_to ((char *) cb.data, cb.size,
&b64cbtlsunique, NULL);
if (res != GSASL_OK)
error (EXIT_FAILURE, 0, "%s", gsasl_strerror (res));
}
#endif
using_tls = true;
}
#endif
if (args_info.client_flag || args_info.client_given
|| args_info.server_given)
{
char *out;
char *b64output;
size_t output_len;
size_t b64output_len;
const char *mech;
Gsasl_session *xctx = NULL;
if (!select_mechanism (&in))
return 1;
mech = gsasl_client_suggest_mechanism (ctx, in);
if (mech == NULL)
{
fprintf (stderr, _("Cannot find mechanism...\n"));
return 0;
}
if (args_info.mechanism_arg)
mech = args_info.mechanism_arg;
if (!authenticate (mech))
return 1;
/* Authenticate using mechanism */
if (args_info.server_flag)
res = gsasl_server_start (ctx, mech, &xctx);
else
res = gsasl_client_start (ctx, mech, &xctx);
if (res != GSASL_OK)
error (EXIT_FAILURE, 0, _("mechanism unavailable: %s"),
gsasl_strerror (res));
in = NULL;
out = NULL;
if (!args_info.server_flag && args_info.no_client_first_flag)
{
res = GSASL_NEEDS_MORE;
goto no_client_first;
}
do
{
int res2;
res = gsasl_step64 (xctx, in, &out);
if (res != GSASL_NEEDS_MORE && res != GSASL_OK)
break;
if (!step_send (out))
return 1;
no_client_first:
if (!args_info.quiet_given &&
!args_info.imap_flag && !args_info.smtp_flag)
{
if (args_info.server_flag)
fprintf (stderr, _("Enter base64 authentication data "
"from client (press RET if none):\n"));
else
fprintf (stderr, _("Enter base64 authentication data "
"from server (press RET if none):\n"));
}
/* Return 1 on token, 2 on protocol success, 3 on protocol fail, 0 on
errors. */
res2 = step_recv (&in);
if (!res2)
return 1;
if (res2 == 3)
error (EXIT_FAILURE, 0, _("server error"));
if (res2 == 2)
break;
}
while (args_info.imap_flag || args_info.smtp_flag
|| res == GSASL_NEEDS_MORE);
if (res != GSASL_OK)
error (EXIT_FAILURE, 0, _("mechanism error: %s"),
gsasl_strerror (res));
if (!args_info.quiet_given)
{
if (args_info.server_flag)
fprintf (stderr, _("Server authentication "
"finished (client trusted)...\n"));
else
fprintf (stderr, _("Client authentication "
"finished (server trusted)...\n"));
fflush (stderr);
}
/* Transfer application payload */
if (args_info.application_data_flag)
{
struct pollfd pfd[2];
char *sockbuf = NULL;
/* we read chunks of 1000 bytes at a time */
size_t sockpos = 0, sockalloc = 0, sockalloc1 = 1000;
/* Setup pollfd structs... */
pfd[0].fd = STDIN_FILENO;
pfd[0].events = POLLIN;
if (sockfd)
{
pfd[1].fd = sockfd;
pfd[1].events = POLLIN;
}
if (!args_info.quiet_given)
{
fprintf (stderr,
_("Enter application data (EOF to finish):\n"));
fflush (stderr);
}
while (1)
{
int rc;
pfd[0].revents = 0;
pfd[1].revents = 0;
rc = poll (pfd, sockfd ? 2 : 1, -1);
if (rc < 0 && errno == EINTR)
continue;
/* Always check for errors */
if (rc < 0)
error (EXIT_FAILURE, errno, "poll");
/* We got data to read from stdin.. */
if ((pfd[0].revents & (POLLIN | POLLERR)) == POLLIN)
{
char *line = NULL;
size_t n;
ssize_t len;
len = getline (&line, &n, stdin);
if (len <= 0)
break;
if (args_info.imap_flag || args_info.smtp_flag)
{
if (len < 2 || strcmp (&line[len - 2], "\r\n") != 0)
{
line = xrealloc (line, len + 2);
line[len - 1] = '\r';
line[len] = '\n';
line[len + 1] = '\0';
len++;
}
}
else
{
len--;
line[len] = '\0';
}
res = gsasl_encode (xctx, line, len, &out, &output_len);
if (res != GSASL_OK)
break;
if (sockfd)
{
#ifdef HAVE_LIBGNUTLS
if (using_tls)
len = gnutls_record_send (session, out, output_len);
else
#endif
len = write (sockfd, out, output_len);
if (len != output_len)
error (EXIT_FAILURE, errno, "write");
}
else if (!(strlen (line) == output_len &&
memcmp (line, out, output_len) == 0))
{
res = gsasl_base64_to (out, output_len,
&b64output, &b64output_len);
if (res != GSASL_OK)
break;
if (!args_info.quiet_given)
fprintf (stderr, _("Base64 encoded application "
"data to send:\n"));
fprintf (stdout, "%s\n", b64output);
free (b64output);
}
free (line);
free (out);
}
/* If there was an error, quit. */
else if (pfd[0].revents & (POLLERR | POLLHUP))
{
error (0, 0, "poll stdin");
break;
}
/* We got data to read from the socket.. */
if (sockfd && (pfd[1].revents & (POLLIN | POLLERR)) == POLLIN)
{
ssize_t len;
if (sockalloc == sockpos)
sockbuf = x2realloc (sockbuf, &sockalloc1);
sockalloc = sockalloc1;
#ifdef HAVE_LIBGNUTLS
if (using_tls)
len = gnutls_record_recv (session, &sockbuf[sockpos],
sockalloc - sockpos);
else
#endif
len = recv (sockfd, &sockbuf[sockpos],
sockalloc - sockpos, 0);
if (len <= 0)
break;
sockpos += len;
res = gsasl_decode (xctx, sockbuf, sockpos,
&out, &output_len);
if (res == GSASL_NEEDS_MORE)
{
#define MAX_INPUT_SIZE 0x100000
if (sockpos > MAX_INPUT_SIZE)
error (EXIT_FAILURE, 0,
_("SASL record too large: %zu\n"), sockpos);
continue;
}
if (res != GSASL_OK)
break;
free (sockbuf);
sockbuf = NULL;
sockpos = 0;
sockalloc = 0;
sockalloc1 = 1000;
printf ("%.*s", (int) output_len, out);
free (out);
}
/* If there was an error, quit. */
else if (pfd[1].revents & (POLLERR | POLLHUP))
{
error (0, 0, "poll socket");
break;
}
}
if (res != GSASL_OK)
error (EXIT_FAILURE, 0, _("encoding error: %s"),
gsasl_strerror (res));
}
if (!args_info.quiet_given)
fprintf (stderr, _("Session finished...\n"));
if (!logout ())
return 1;
gsasl_finish (xctx);
}
if (sockfd)
{
#ifdef HAVE_LIBGNUTLS
if (using_tls)
{
res = gnutls_bye (session, GNUTLS_SHUT_RDWR);
if (res < 0)
error (EXIT_FAILURE, 0,
_("terminating GnuTLS session failed: %s"),
gnutls_strerror (res));
}
#endif
shutdown (sockfd, SHUT_RDWR);
close (sockfd);
}
gsasl_done (ctx);
#ifdef HAVE_LIBGNUTLS
if (using_tls)
{
gnutls_deinit (session);
gnutls_anon_free_client_credentials (anoncred);
gnutls_certificate_free_credentials (x509cred);
gnutls_global_deinit ();
}
#endif
return 0;
}
void
doit (void)
{
Gsasl *ctx = NULL;
Gsasl_session *sctx = NULL;
char *out = NULL;
int i, j;
int res;
if (!gsasl_check_version (GSASL_VERSION))
fail ("gsasl_check_version failure");
success ("Header version %s library version %s\n",
GSASL_VERSION, gsasl_check_version (NULL));
res = gsasl_init (&ctx);
if (res != GSASL_OK)
{
fail ("gsasl_init() failed (%d):\n%s\n", res, gsasl_strerror (res));
return;
}
gsasl_callback_set (ctx, cb);
res = gsasl_client_mechlist (ctx, &out);
if (res != GSASL_OK)
fail ("gsasl_client_mechlist() failed (%d):\n%s\n",
res, gsasl_strerror (res));
success ("client_mechlist: %s\n", out);
gsasl_free (out);
out = NULL;
res = gsasl_server_mechlist (ctx, &out);
if (res != GSASL_OK)
fail ("gsasl_server_mechlist() failed (%d):\n%s\n",
res, gsasl_strerror (res));
success ("server_mechlist: %s\n", out);
gsasl_free (out);
out = NULL;
for (i = 0; i < sizeof (sasltv) / sizeof (sasltv[0]); i++)
{
gsasl_callback_hook_set (ctx, &i);
if (debug)
printf ("Entry %d %s mechanism %s:\n",
i, sasltv[i].clientp ? "client" : "server", sasltv[i].mech);
if (sasltv[i].clientp)
res = gsasl_client_support_p (ctx, sasltv[i].mech);
else
res = gsasl_server_support_p (ctx, sasltv[i].mech);
if (!res)
continue;
if (sasltv[i].clientp)
res = gsasl_client_start (ctx, sasltv[i].mech, &sctx);
else
res = gsasl_server_start (ctx, sasltv[i].mech, &sctx);
if (res != GSASL_OK)
{
fail ("SASL %s start for mechanism %s failed (%d):\n%s\n",
sasltv[i].clientp ? "client" : "server",
sasltv[i].mech, res, gsasl_strerror (res));
continue;
}
for (j = 0; sasltv[i].step[j]; j += 2)
{
gsasl_session_hook_set (sctx, &j);
if (debug)
printf ("Input : %s\n",
sasltv[i].step[j] ? sasltv[i].step[j] : "");
res = gsasl_step64 (sctx, sasltv[i].step[j], &out);
if (debug)
printf ("Output: %s\n", out ? out : "(null)");
if (res != GSASL_OK && res != GSASL_NEEDS_MORE)
{
fail ("gsasl_step64 failed (%d): %s", res,
gsasl_strerror (res));
break;
}
if (strlen (out) !=
strlen (sasltv[i].step[j + 1] ? sasltv[i].step[j + 1] : ""))
{
printf ("Expected: %s\n", sasltv[i].step[j + 1] ?
sasltv[i].step[j + 1] : "");
fail
("SASL entry %d mechanism %s client step %d length error\n",
i, sasltv[i].mech, j);
j = -1;
break;
}
if (strcmp (out, sasltv[i].step[j + 1] ?
sasltv[i].step[j + 1] : "") != 0)
{
printf ("Expected: %s\n", sasltv[i].step[j + 1] ?
sasltv[i].step[j + 1] : "");
fail ("SASL entry %d mechanism %s client step %d data error\n",
i, sasltv[i].mech, j);
j = -1;
break;
}
gsasl_free (out);
out = NULL;
if (strcmp (sasltv[i].mech, "SECURID") != 0 && res == GSASL_OK)
break;
}
if (j != (size_t) - 1 && res == GSASL_OK && sasltv[i].step[j + 2])
fail ("SASL entry %d mechanism %s step %d code ended prematurely\n",
i, sasltv[i].mech, j);
else if (j != (size_t) - 1 && res == GSASL_NEEDS_MORE)
fail ("SASL entry %d mechanism %s step %d table ended prematurely\n",
i, sasltv[i].mech, j);
else if (j != (size_t) - 1 && res != GSASL_OK)
fail ("SASL entry %d mechanism %s step %d failed (%d):\n%s\n",
i, sasltv[i].mech, j, res, gsasl_strerror (res));
else
printf ("PASS: simple %s %s %d\n", sasltv[i].mech,
sasltv[i].clientp ? "client" : "server", i);
{
size_t outlen;
res = gsasl_encode (sctx, "foo", 3, &out, &outlen);
if (res != GSASL_OK)
fail ("gsasl_encode %d: %s\n", res, gsasl_strerror (res));
if (outlen != 3 && memcmp (out, "foo", outlen) != 0)
fail ("gsasl_encode memcmp: %.*s\n", (int) outlen, out);
gsasl_free (out);
out = NULL;
res = gsasl_decode (sctx, "foo", 3, &out, &outlen);
if (res != GSASL_OK)
fail ("gsasl_decode %d: %s\n", res, gsasl_strerror (res));
if (outlen != 3 && memcmp (out, "foo", outlen) != 0)
fail ("gsasl_decode memcmp: %.*s\n", (int) outlen, out);
gsasl_free (out);
out = NULL;
}
gsasl_finish (sctx);
if (debug)
printf ("\n");
}
gsasl_done (ctx);
/* Sanity check interfaces. */
gsasl_finish (NULL);
gsasl_done (NULL);
}