enum okay
ssl_open(const char *server, struct sock *sp, const char *uhp)
{
PRFileDesc *fdp, *fdc;
if (nss_init() == STOP)
return STOP;
ssl_set_vrfy_level(uhp);
nss_select_method(uhp);
if ((fdp = PR_ImportTCPSocket(sp->s_fd)) == NULL) {
nss_gen_err("Error importing OS file descriptor");
return STOP;
}
if ((fdc = SSL_ImportFD(NULL, fdp)) == NULL) {
nss_gen_err("Error importing NSPR file descriptor");
PR_Close(fdp);
return STOP;
}
SSL_SetURL(fdc, server);
SSL_SetPKCS11PinArg(fdc, NULL);
SSL_BadCertHook(fdc, bad_cert_cb, NULL);
if (SSL_ResetHandshake(fdc, PR_FALSE) != SECSuccess) {
nss_gen_err("Cannot reset NSS handshake");
PR_Close(fdc);
return STOP;
}
if (SSL_ForceHandshake(fdc) != 0) {
nss_gen_err("SSL/TLS handshake failed");
PR_Close(fdc);
return STOP;
}
sp->s_prfd = fdc;
if (nss_check_host(server, sp) != OKAY && ssl_vrfy_decide() != OKAY) {
PR_Close(fdc);
sp->s_prfd = NULL;
return STOP;
}
sp->s_use_ssl = 1;
if (verbose) {
char *cipher, *issuer, *subject;
int keysize, secretkeysize;
if (SSL_SecurityStatus(fdc, NULL, &cipher,
&keysize, &secretkeysize,
&issuer, &subject) == SECSuccess) {
fprintf(stderr, "SSL parameters: cipher=%s, "
"keysize=%d, secretkeysize=%d,\n"
"issuer=%s\n"
"subject=%s\n",
cipher, keysize, secretkeysize,
issuer, subject);
PR_Free(cipher);
PR_Free(issuer);
PR_Free(subject);
} else
nss_gen_err("Could not read status information");
}
return OKAY;
}
/** Create socket. If ssl is >0, socket is ssl enabled.
@param ssl Enable ssl (Client, SSL2+3, no TLS, compatible hello) if PR_TRUE, otherwise no.
@param ipv6 New socket will be IPv4 if this value is 0, otherwise it will be ipv6
@return NULL on error, otherwise socket.
*/
static PRFileDesc *create_socket(int ssl,int ipv6) {
PRFileDesc *res_socket;
res_socket=PR_OpenTCPSocket((ipv6?PR_AF_INET6:PR_AF_INET));
if (res_socket==NULL) {
print_nspr_error();
return NULL;
}
if (!ssl) return res_socket;
if (!(res_socket=SSL_ImportFD(NULL,res_socket))) {
print_nspr_error();
return NULL;
}
if ((SSL_OptionSet(res_socket,SSL_SECURITY,ssl)!=SECSuccess) ||
(SSL_OptionSet(res_socket,SSL_HANDSHAKE_AS_SERVER,PR_FALSE)!=SECSuccess) ||
(SSL_OptionSet(res_socket,SSL_HANDSHAKE_AS_CLIENT,PR_TRUE)!=SECSuccess) ||
(SSL_OptionSet(res_socket,SSL_ENABLE_SSL2,ssl)!=SECSuccess) ||
(SSL_OptionSet(res_socket,SSL_ENABLE_SSL3,ssl)!=SECSuccess) ||
(SSL_OptionSet(res_socket,SSL_ENABLE_TLS,PR_FALSE)!=SECSuccess) ||
(SSL_OptionSet(res_socket,SSL_V2_COMPATIBLE_HELLO,ssl)!=SECSuccess) ||
(SSL_SetPKCS11PinArg(res_socket,NULL)==-1) ||
(SSL_AuthCertificateHook(res_socket,SSL_AuthCertificate,CERT_GetDefaultCertDB())!=SECSuccess) ||
(SSL_BadCertHook(res_socket,nss_bad_cert_hook,NULL)!=SECSuccess)) {
print_nspr_error();
if (PR_Close(res_socket)!=PR_SUCCESS) {
print_nspr_error();
}
return NULL;
}
return res_socket;
}
CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
{
PRErrorCode err = 0;
PRFileDesc *model = NULL;
PRBool ssl2 = PR_FALSE;
PRBool ssl3 = PR_FALSE;
PRBool tlsv1 = PR_FALSE;
PRBool ssl_no_cache;
PRBool ssl_cbc_random_iv;
struct SessionHandle *data = conn->data;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
CURLcode curlerr;
const int *cipher_to_enable;
PRSocketOptionData sock_opt;
long time_left;
PRUint32 timeout;
if(connssl->state == ssl_connection_complete)
return CURLE_OK;
connssl->data = data;
/* list of all NSS objects we need to destroy in Curl_nss_close() */
connssl->obj_list = Curl_llist_alloc(nss_destroy_object);
if(!connssl->obj_list)
return CURLE_OUT_OF_MEMORY;
/* FIXME. NSS doesn't support multiple databases open at the same time. */
PR_Lock(nss_initlock);
curlerr = nss_init(conn->data);
if(CURLE_OK != curlerr) {
PR_Unlock(nss_initlock);
goto error;
}
curlerr = CURLE_SSL_CONNECT_ERROR;
if(!mod) {
char *configstring = aprintf("library=%s name=PEM", pem_library);
if(!configstring) {
PR_Unlock(nss_initlock);
goto error;
}
mod = SECMOD_LoadUserModule(configstring, NULL, PR_FALSE);
free(configstring);
if(!mod || !mod->loaded) {
if(mod) {
SECMOD_DestroyModule(mod);
mod = NULL;
}
infof(data, "WARNING: failed to load NSS PEM library %s. Using "
"OpenSSL PEM certificates will not work.\n", pem_library);
}
}
PK11_SetPasswordFunc(nss_get_password);
PR_Unlock(nss_initlock);
model = PR_NewTCPSocket();
if(!model)
goto error;
model = SSL_ImportFD(NULL, model);
/* make the socket nonblocking */
sock_opt.option = PR_SockOpt_Nonblocking;
sock_opt.value.non_blocking = PR_TRUE;
if(PR_SetSocketOption(model, &sock_opt) != PR_SUCCESS)
goto error;
if(SSL_OptionSet(model, SSL_SECURITY, PR_TRUE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_SERVER, PR_FALSE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE) != SECSuccess)
goto error;
/* do not use SSL cache if we are not going to verify peer */
ssl_no_cache = (data->set.ssl.verifypeer) ? PR_FALSE : PR_TRUE;
if(SSL_OptionSet(model, SSL_NO_CACHE, ssl_no_cache) != SECSuccess)
goto error;
switch (data->set.ssl.version) {
default:
case CURL_SSLVERSION_DEFAULT:
ssl3 = PR_TRUE;
if(data->state.ssl_connect_retry)
infof(data, "TLS disabled due to previous handshake failure\n");
else
tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_TLSv1:
tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv2:
ssl2 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv3:
ssl3 = PR_TRUE;
break;
}
if(SSL_OptionSet(model, SSL_ENABLE_SSL2, ssl2) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_SSL3, ssl3) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_TLS, tlsv1) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_V2_COMPATIBLE_HELLO, ssl2) != SECSuccess)
goto error;
ssl_cbc_random_iv = !data->set.ssl_enable_beast;
#ifdef SSL_CBC_RANDOM_IV
/* unless the user explicitly asks to allow the protocol vulnerability, we
use the work-around */
if(SSL_OptionSet(model, SSL_CBC_RANDOM_IV, ssl_cbc_random_iv) != SECSuccess)
infof(data, "warning: failed to set SSL_CBC_RANDOM_IV = %d\n",
ssl_cbc_random_iv);
#else
if(ssl_cbc_random_iv)
infof(data, "warning: support for SSL_CBC_RANDOM_IV not compiled in\n");
#endif
/* reset the flag to avoid an infinite loop */
data->state.ssl_connect_retry = FALSE;
/* enable all ciphers from enable_ciphers_by_default */
cipher_to_enable = enable_ciphers_by_default;
while(SSL_NULL_WITH_NULL_NULL != *cipher_to_enable) {
if(SSL_CipherPrefSet(model, *cipher_to_enable, PR_TRUE) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
cipher_to_enable++;
}
if(data->set.ssl.cipher_list) {
if(set_ciphers(data, model, data->set.ssl.cipher_list) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
}
if(!data->set.ssl.verifypeer && data->set.ssl.verifyhost)
infof(data, "warning: ignoring value of ssl.verifyhost\n");
/* bypass the default SSL_AuthCertificate() hook in case we do not want to
* verify peer */
if(SSL_AuthCertificateHook(model, nss_auth_cert_hook, conn) != SECSuccess)
goto error;
data->set.ssl.certverifyresult=0; /* not checked yet */
if(SSL_BadCertHook(model, BadCertHandler, conn) != SECSuccess)
goto error;
if(SSL_HandshakeCallback(model, HandshakeCallback, NULL) != SECSuccess)
goto error;
if(data->set.ssl.verifypeer) {
const CURLcode rv = nss_load_ca_certificates(conn, sockindex);
if(CURLE_OK != rv) {
curlerr = rv;
goto error;
}
}
if(data->set.ssl.CRLfile) {
if(SECSuccess != nss_load_crl(data->set.ssl.CRLfile)) {
curlerr = CURLE_SSL_CRL_BADFILE;
goto error;
}
infof(data,
" CRLfile: %s\n",
data->set.ssl.CRLfile ? data->set.ssl.CRLfile : "none");
}
if(data->set.str[STRING_CERT]) {
char *nickname = dup_nickname(data, STRING_CERT);
if(nickname) {
/* we are not going to use libnsspem.so to read the client cert */
connssl->obj_clicert = NULL;
}
else {
CURLcode rv = cert_stuff(conn, sockindex, data->set.str[STRING_CERT],
data->set.str[STRING_KEY]);
if(CURLE_OK != rv) {
/* failf() is already done in cert_stuff() */
curlerr = rv;
goto error;
}
}
/* store the nickname for SelectClientCert() called during handshake */
connssl->client_nickname = nickname;
}
else
connssl->client_nickname = NULL;
if(SSL_GetClientAuthDataHook(model, SelectClientCert,
(void *)connssl) != SECSuccess) {
curlerr = CURLE_SSL_CERTPROBLEM;
goto error;
}
/* Import our model socket onto the existing file descriptor */
connssl->handle = PR_ImportTCPSocket(sockfd);
connssl->handle = SSL_ImportFD(model, connssl->handle);
if(!connssl->handle)
goto error;
PR_Close(model); /* We don't need this any more */
model = NULL;
/* This is the password associated with the cert that we're using */
if(data->set.str[STRING_KEY_PASSWD]) {
SSL_SetPKCS11PinArg(connssl->handle, data->set.str[STRING_KEY_PASSWD]);
}
/* Force handshake on next I/O */
SSL_ResetHandshake(connssl->handle, /* asServer */ PR_FALSE);
SSL_SetURL(connssl->handle, conn->host.name);
/* check timeout situation */
time_left = Curl_timeleft(data, NULL, TRUE);
if(time_left < 0L) {
failf(data, "timed out before SSL handshake");
curlerr = CURLE_OPERATION_TIMEDOUT;
goto error;
}
timeout = PR_MillisecondsToInterval((PRUint32) time_left);
/* Force the handshake now */
if(SSL_ForceHandshakeWithTimeout(connssl->handle, timeout) != SECSuccess) {
if(conn->data->set.ssl.certverifyresult == SSL_ERROR_BAD_CERT_DOMAIN)
curlerr = CURLE_PEER_FAILED_VERIFICATION;
else if(conn->data->set.ssl.certverifyresult!=0)
curlerr = CURLE_SSL_CACERT;
goto error;
}
connssl->state = ssl_connection_complete;
conn->recv[sockindex] = nss_recv;
conn->send[sockindex] = nss_send;
display_conn_info(conn, connssl->handle);
if(data->set.str[STRING_SSL_ISSUERCERT]) {
SECStatus ret = SECFailure;
char *nickname = dup_nickname(data, STRING_SSL_ISSUERCERT);
if(nickname) {
/* we support only nicknames in case of STRING_SSL_ISSUERCERT for now */
ret = check_issuer_cert(connssl->handle, nickname);
free(nickname);
}
if(SECFailure == ret) {
infof(data,"SSL certificate issuer check failed\n");
curlerr = CURLE_SSL_ISSUER_ERROR;
goto error;
}
else {
infof(data, "SSL certificate issuer check ok\n");
}
}
return CURLE_OK;
error:
/* reset the flag to avoid an infinite loop */
data->state.ssl_connect_retry = FALSE;
if(is_nss_error(curlerr)) {
/* read NSPR error code */
err = PR_GetError();
if(is_cc_error(err))
curlerr = CURLE_SSL_CERTPROBLEM;
/* print the error number and error string */
infof(data, "NSS error %d (%s)\n", err, nss_error_to_name(err));
/* print a human-readable message describing the error if available */
nss_print_error_message(data, err);
}
if(model)
PR_Close(model);
/* cleanup on connection failure */
Curl_llist_destroy(connssl->obj_list, NULL);
connssl->obj_list = NULL;
if(ssl3 && tlsv1 && isTLSIntoleranceError(err)) {
/* schedule reconnect through Curl_retry_request() */
data->state.ssl_connect_retry = TRUE;
infof(data, "Error in TLS handshake, trying SSLv3...\n");
return CURLE_OK;
}
return curlerr;
}
/* one copy of this function is launched in a separate thread for each
** connection to be made.
*/
SECStatus
do_connects(void *a, int connection)
{
PRNetAddr *addr = (PRNetAddr *)a;
PRFileDesc *sslSocket;
PRHostEnt hostEntry;
char buffer[PR_NETDB_BUF_SIZE];
PRStatus prStatus;
PRIntn hostenum;
PRInt32 ip;
SECStatus secStatus;
/* Set up SSL secure socket. */
sslSocket = setupSSLSocket(addr);
if (sslSocket == NULL) {
errWarn("setupSSLSocket");
return SECFailure;
}
secStatus = SSL_SetPKCS11PinArg(sslSocket, &pwdata);
if (secStatus != SECSuccess) {
errWarn("SSL_SetPKCS11PinArg");
return secStatus;
}
secStatus = SSL_SetURL(sslSocket, hostName);
if (secStatus != SECSuccess) {
errWarn("SSL_SetURL");
return secStatus;
}
/* Prepare and setup network connection. */
prStatus = PR_GetHostByName(hostName, buffer, sizeof(buffer), &hostEntry);
if (prStatus != PR_SUCCESS) {
errWarn("PR_GetHostByName");
return SECFailure;
}
hostenum = PR_EnumerateHostEnt(0, &hostEntry, port, addr);
if (hostenum == -1) {
errWarn("PR_EnumerateHostEnt");
return SECFailure;
}
ip = PR_ntohl(addr->inet.ip);
fprintf(stderr,
"Connecting to host %s (addr %d.%d.%d.%d) on port %d\n",
hostName, BYTE(3,ip), BYTE(2,ip), BYTE(1,ip),
BYTE(0,ip), PR_ntohs(addr->inet.port));
prStatus = PR_Connect(sslSocket, addr, PR_INTERVAL_NO_TIMEOUT);
if (prStatus != PR_SUCCESS) {
errWarn("PR_Connect");
return SECFailure;
}
/* Established SSL connection, ready to send data. */
#if 0
secStatus = SSL_ForceHandshake(sslSocket);
if (secStatus != SECSuccess) {
errWarn("SSL_ForceHandshake");
return secStatus;
}
#endif
secStatus = SSL_ResetHandshake(sslSocket, /* asServer */ PR_FALSE);
if (secStatus != SECSuccess) {
errWarn("SSL_ResetHandshake");
prStatus = PR_Close(sslSocket);
if (prStatus != PR_SUCCESS) {
errWarn("PR_Close");
}
return secStatus;
}
secStatus = handle_connection(sslSocket, connection);
if (secStatus != SECSuccess) {
/* error already printed out in handle_connection */
/* errWarn("handle_connection"); */
prStatus = PR_Close(sslSocket);
if (prStatus != PR_SUCCESS) {
errWarn("PR_Close");
}
return secStatus;
}
PR_Close(sslSocket);
return SECSuccess;
}
/**
* Performs SSL handshake on a TCP socket.
*/
PRFileDesc *Connection::secureSocket(const std::string &certDBPasswd,
const std::string &certNickName,
bool alwaysTrustServerCert,
PRFileDesc *rawSocket) {
bool upgradeExisting = false;
// Use object's socket if none passed
if (rawSocket == static_cast<PRFileDesc *>(NULL)) {
rawSocket = socket;
upgradeExisting = true;
}
PRFileDesc *sslSocket = SSL_ImportFD(NULL, rawSocket);
if (static_cast<PRFileDesc *>(NULL) != sslSocket) {
SECStatus secStatus = SECSuccess;
const char *sslMethodName;
// In case there was any communication on the socket
// before the upgrade we should call a reset
if (upgradeExisting) {
sslMethodName = "SSL_ResetHandshake";
secStatus = SSL_ResetHandshake(sslSocket, false);
}
if (SECSuccess == secStatus) {
sslMethodName = "SSL_OptionSet";
secStatus = SSL_OptionSet(sslSocket, SSL_SECURITY, PR_TRUE);
}
if (SECSuccess == secStatus) {
secStatus = SSL_OptionSet(sslSocket,
SSL_HANDSHAKE_AS_CLIENT, PR_TRUE);
if (SECSuccess == secStatus && alwaysTrustServerCert) {
sslMethodName = "SSL_AuthCertificateHook";
secStatus = SSL_AuthCertificateHook(sslSocket, acceptAnyCert,
NULL);
}
if (SECSuccess == secStatus && certDBPasswd.size() > 0) {
sslMethodName = "SSL_SetPKCS11PinArg";
secStatus = SSL_SetPKCS11PinArg(sslSocket, certdbpasswd);
}
if (SECSuccess == secStatus) {
if (certNickName.size() > 0) {
certnickname = strdup(certNickName.c_str());
}
sslMethodName = "SSL_GetClientAuthDataHook";
secStatus = SSL_GetClientAuthDataHook(sslSocket,
NSS_GetClientAuthData,
static_cast<void *>(certnickname));
}
if (SECSuccess == secStatus) {
sslMethodName = "SSL_HandshakeCallback";
secStatus = SSL_HandshakeCallback(sslSocket,
(SSLHandshakeCallback)finishedHandshakeHandler,
NULL);
}
}
if (SECSuccess != secStatus) {
PRErrorCode error = PR_GetError();
PR_Close(sslSocket);
throw NSPRException("Connection::secureSocket",
sslMethodName, error);
}
} else {
PRErrorCode error = PR_GetError();
PR_Close(rawSocket);
throw NSPRException("Connection::secureSocket", "SSL_ImportFD",
error);
}
socket = sslSocket;
return sslSocket;
}
int SetServerSecParms(struct ThreadData *td) {
int rv;
SECKEYPrivateKey *privKey;
PRFileDesc *s;
s = td->r;
rv = SSL_Enable(s, SSL_SECURITY, 1); /* Enable security on this socket */
if (rv < 0) return Error(10);
if (SSLT_CLIENTAUTH_INITIAL == REP_ServerDoClientAuth) {
rv = SSL_Enable(s, SSL_REQUEST_CERTIFICATE, 1);
if (rv < 0) return Error(11);
}
ClearCiphers(td);
EnableCiphers(td);
PK11_SetPasswordFunc(MyPWFunc);
SSL_SetPKCS11PinArg(s,(void*) MyPWFunc);
/* Find the certificates we are going to use from the database */
/* Test for dummy certificate, which shouldn't exist */
td->cert = PK11_FindCertFromNickname("XXXXXX_CERT_HARDCOREII_1024",NULL);
if (td->cert != NULL) return Error(16);
td->cert = NULL;
if (NO_CERT != REP_ServerCert) {
td->cert = PK11_FindCertFromNickname(nicknames[REP_ServerCert],NULL);
}
/* Note: if we're set to use NO_CERT as the server cert, then we'll
* just essentially skip the rest of this (except for session ID cache setup)
*/
if ( (NULL == td->cert) && ( NO_CERT != REP_ServerCert )) {
PR_fprintf(PR_STDERR, "Can't find certificate %s\n", nicknames[REP_ServerCert]);
PR_fprintf(PR_STDERR, "Server: Seclib error: %s\n",
SECU_ErrorString ((int16) PR_GetError()));
return Error(12);
}
if ((NO_CERT != REP_ServerCert)) {
privKey = PK11_FindKeyByAnyCert(td->cert, NULL);
if (privKey == NULL) {
dbmsg((PR_STDERR, "Can't find key for this certificate\n"));
return Error(13);
}
rv = SSL_ConfigSecureServer(s,td->cert,privKey, kt_rsa);
if (rv != PR_SUCCESS) {
dbmsg((PR_STDERR, "Can't config server error(%d) \n",rv));
return Error(14);
}
}
rv = SSL_ConfigServerSessionIDCache(10, 0, 0, ".");
if (rv != 0) {
dbmsg((PR_STDERR, "Can't config server session ID cache (%d) \n",rv));
return Error(15);
}
return 0;
}
CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
{
PRInt32 err;
PRFileDesc *model = NULL;
PRBool ssl2, ssl3, tlsv1;
struct SessionHandle *data = conn->data;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
SECStatus rv;
char *certDir = NULL;
int curlerr;
const int *cipher_to_enable;
curlerr = CURLE_SSL_CONNECT_ERROR;
if (connssl->state == ssl_connection_complete)
return CURLE_OK;
connssl->data = data;
#ifdef HAVE_PK11_CREATEGENERICOBJECT
connssl->cacert[0] = NULL;
connssl->cacert[1] = NULL;
connssl->key = NULL;
#endif
/* FIXME. NSS doesn't support multiple databases open at the same time. */
PR_Lock(nss_initlock);
if(!initialized) {
struct_stat st;
/* First we check if $SSL_DIR points to a valid dir */
certDir = getenv("SSL_DIR");
if(certDir) {
if((stat(certDir, &st) != 0) ||
(!S_ISDIR(st.st_mode))) {
certDir = NULL;
}
}
/* Now we check if the default location is a valid dir */
if(!certDir) {
if((stat(SSL_DIR, &st) == 0) &&
(S_ISDIR(st.st_mode))) {
certDir = (char *)SSL_DIR;
}
}
if (!NSS_IsInitialized()) {
initialized = 1;
infof(conn->data, "Initializing NSS with certpath: %s\n",
certDir ? certDir : "none");
if(!certDir) {
rv = NSS_NoDB_Init(NULL);
}
else {
char *certpath = PR_smprintf("%s%s",
NSS_VersionCheck("3.12.0") ? "sql:" : "",
certDir);
rv = NSS_Initialize(certpath, "", "", "", NSS_INIT_READONLY);
PR_smprintf_free(certpath);
}
if(rv != SECSuccess) {
infof(conn->data, "Unable to initialize NSS database\n");
curlerr = CURLE_SSL_CACERT_BADFILE;
initialized = 0;
PR_Unlock(nss_initlock);
goto error;
}
}
if(num_enabled_ciphers() == 0)
NSS_SetDomesticPolicy();
#ifdef HAVE_PK11_CREATEGENERICOBJECT
if(!mod) {
char *configstring = aprintf("library=%s name=PEM", pem_library);
if(!configstring) {
PR_Unlock(nss_initlock);
goto error;
}
mod = SECMOD_LoadUserModule(configstring, NULL, PR_FALSE);
free(configstring);
if(!mod || !mod->loaded) {
if(mod) {
SECMOD_DestroyModule(mod);
mod = NULL;
}
infof(data, "WARNING: failed to load NSS PEM library %s. Using OpenSSL "
"PEM certificates will not work.\n", pem_library);
}
}
#endif
PK11_SetPasswordFunc(nss_get_password);
}
PR_Unlock(nss_initlock);
model = PR_NewTCPSocket();
if(!model)
goto error;
model = SSL_ImportFD(NULL, model);
if(SSL_OptionSet(model, SSL_SECURITY, PR_TRUE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_SERVER, PR_FALSE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE) != SECSuccess)
goto error;
ssl2 = ssl3 = tlsv1 = PR_FALSE;
switch (data->set.ssl.version) {
default:
case CURL_SSLVERSION_DEFAULT:
ssl3 = tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_TLSv1:
tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv2:
ssl2 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv3:
ssl3 = PR_TRUE;
break;
}
if(SSL_OptionSet(model, SSL_ENABLE_SSL2, ssl2) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_SSL3, ssl3) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_TLS, tlsv1) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_V2_COMPATIBLE_HELLO, ssl2) != SECSuccess)
goto error;
/* enable all ciphers from enable_ciphers_by_default */
cipher_to_enable = enable_ciphers_by_default;
while (SSL_NULL_WITH_NULL_NULL != *cipher_to_enable) {
if (SSL_CipherPrefSet(model, *cipher_to_enable, PR_TRUE) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
cipher_to_enable++;
}
if(data->set.ssl.cipher_list) {
if(set_ciphers(data, model, data->set.ssl.cipher_list) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
}
if(data->set.ssl.verifyhost == 1)
infof(data, "warning: ignoring unsupported value (1) of ssl.verifyhost\n");
data->set.ssl.certverifyresult=0; /* not checked yet */
if(SSL_BadCertHook(model, (SSLBadCertHandler) BadCertHandler, conn)
!= SECSuccess) {
goto error;
}
if(SSL_HandshakeCallback(model, (SSLHandshakeCallback) HandshakeCallback,
NULL) != SECSuccess)
goto error;
if(!data->set.ssl.verifypeer)
/* skip the verifying of the peer */
;
else if(data->set.ssl.CAfile) {
int rc = nss_load_cert(&conn->ssl[sockindex], data->set.ssl.CAfile,
PR_TRUE);
if(!rc) {
curlerr = CURLE_SSL_CACERT_BADFILE;
goto error;
}
}
else if(data->set.ssl.CApath) {
struct_stat st;
PRDir *dir;
PRDirEntry *entry;
if(stat(data->set.ssl.CApath, &st) == -1) {
curlerr = CURLE_SSL_CACERT_BADFILE;
goto error;
}
if(S_ISDIR(st.st_mode)) {
int rc;
dir = PR_OpenDir(data->set.ssl.CApath);
do {
entry = PR_ReadDir(dir, PR_SKIP_BOTH | PR_SKIP_HIDDEN);
if(entry) {
char fullpath[PATH_MAX];
snprintf(fullpath, sizeof(fullpath), "%s/%s", data->set.ssl.CApath,
entry->name);
rc = nss_load_cert(&conn->ssl[sockindex], fullpath, PR_TRUE);
/* FIXME: check this return value! */
}
/* This is purposefully tolerant of errors so non-PEM files
* can be in the same directory */
} while(entry != NULL);
PR_CloseDir(dir);
}
}
infof(data,
" CAfile: %s\n"
" CApath: %s\n",
data->set.ssl.CAfile ? data->set.ssl.CAfile : "none",
data->set.ssl.CApath ? data->set.ssl.CApath : "none");
if (data->set.ssl.CRLfile) {
int rc = nss_load_crl(data->set.ssl.CRLfile, PR_FALSE);
if (!rc) {
curlerr = CURLE_SSL_CRL_BADFILE;
goto error;
}
infof(data,
" CRLfile: %s\n",
data->set.ssl.CRLfile ? data->set.ssl.CRLfile : "none");
}
if(data->set.str[STRING_CERT]) {
bool nickname_alloc = FALSE;
char *nickname = fmt_nickname(data->set.str[STRING_CERT], &nickname_alloc);
if(!nickname)
return CURLE_OUT_OF_MEMORY;
if(!cert_stuff(conn, sockindex, data->set.str[STRING_CERT],
data->set.str[STRING_KEY])) {
/* failf() is already done in cert_stuff() */
if(nickname_alloc)
free(nickname);
return CURLE_SSL_CERTPROBLEM;
}
/* this "takes over" the pointer to the allocated name or makes a
dup of it */
connssl->client_nickname = nickname_alloc?nickname:strdup(nickname);
if(!connssl->client_nickname)
return CURLE_OUT_OF_MEMORY;
}
else
connssl->client_nickname = NULL;
if(SSL_GetClientAuthDataHook(model, SelectClientCert,
(void *)connssl) != SECSuccess) {
curlerr = CURLE_SSL_CERTPROBLEM;
goto error;
}
/* Import our model socket onto the existing file descriptor */
connssl->handle = PR_ImportTCPSocket(sockfd);
connssl->handle = SSL_ImportFD(model, connssl->handle);
if(!connssl->handle)
goto error;
PR_Close(model); /* We don't need this any more */
/* This is the password associated with the cert that we're using */
if (data->set.str[STRING_KEY_PASSWD]) {
SSL_SetPKCS11PinArg(connssl->handle, data->set.str[STRING_KEY_PASSWD]);
}
/* Force handshake on next I/O */
SSL_ResetHandshake(connssl->handle, /* asServer */ PR_FALSE);
SSL_SetURL(connssl->handle, conn->host.name);
/* Force the handshake now */
if(SSL_ForceHandshakeWithTimeout(connssl->handle,
PR_SecondsToInterval(HANDSHAKE_TIMEOUT))
!= SECSuccess) {
if(conn->data->set.ssl.certverifyresult == SSL_ERROR_BAD_CERT_DOMAIN)
curlerr = CURLE_PEER_FAILED_VERIFICATION;
else if(conn->data->set.ssl.certverifyresult!=0)
curlerr = CURLE_SSL_CACERT;
goto error;
}
connssl->state = ssl_connection_complete;
display_conn_info(conn, connssl->handle);
if (data->set.str[STRING_SSL_ISSUERCERT]) {
SECStatus ret;
bool nickname_alloc = FALSE;
char *nickname = fmt_nickname(data->set.str[STRING_SSL_ISSUERCERT],
&nickname_alloc);
if(!nickname)
return CURLE_OUT_OF_MEMORY;
ret = check_issuer_cert(connssl->handle, nickname);
if(nickname_alloc)
free(nickname);
if(SECFailure == ret) {
infof(data,"SSL certificate issuer check failed\n");
curlerr = CURLE_SSL_ISSUER_ERROR;
goto error;
}
else {
infof(data, "SSL certificate issuer check ok\n");
}
}
return CURLE_OK;
error:
err = PR_GetError();
infof(data, "NSS error %d\n", err);
if(model)
PR_Close(model);
return curlerr;
}
/* make the connection.
*/
static SECStatus
do_connect(PRNetAddr *addr)
{
PRFileDesc *sslSocket;
PRStatus prStatus;
#if 0
PRHostEnt hostEntry;
char buffer[PR_NETDB_BUF_SIZE];
PRIntn hostenum;
#endif
SECStatus secStatus;
secStatus = SECSuccess;
/* Set up SSL secure socket. */
sslSocket = setupSSLSocket();
if (sslSocket == NULL)
return SECFailure;
#if 0 /* no client authentication */
secStatus = SSL_SetPKCS11PinArg(sslSocket, password);
if (secStatus != SECSuccess)
goto done;
#endif
secStatus = SSL_SetURL(sslSocket, hostName);
if (secStatus != SECSuccess)
goto done;
#if 0 /* Already done */
/* Prepare and setup network connection. */
prStatus = PR_GetHostByName(hostName, buffer, sizeof(buffer), &hostEntry);
if (prStatus != PR_SUCCESS)
{
secStatus = SECFailure;
goto done;
}
hostenum = PR_EnumerateHostEnt(0, &hostEntry, port, addr);
if (hostenum == -1)
{
secStatus = SECFailure;
goto done;
}
#endif
prStatus = PR_Connect(sslSocket, addr, PR_INTERVAL_NO_TIMEOUT);
if (prStatus != PR_SUCCESS)
{
secStatus = SECFailure;
goto done;
}
/* Established SSL connection, ready to send data. */
secStatus = SSL_ResetHandshake(sslSocket, /* asServer */ PR_FALSE);
if (secStatus != SECSuccess)
goto done;
/* This is normally done automatically on the first I/O operation,
but doing it here catches any authentication problems early. */
secStatus = SSL_ForceHandshake(sslSocket);
if (secStatus != SECSuccess)
goto done;
secStatus = handle_connection(sslSocket);
if (secStatus != SECSuccess)
goto done;
done:
prStatus = PR_Close(sslSocket);
return secStatus;
}
void OsTLSServerConnectionSocket::NSSInitSocket(PRFileDesc* pDescriptor, long timeoutInSecs, const char* szPassword)
{
PRFileDesc *tcpSocket = NULL;
PRSocketOptionData socketOption;
PRStatus prStatus;
SECStatus secStatus;
// PRIntn hostenum;
// PRNetAddr addr;
SSLKEAType certKEA;
tcpSocket = pDescriptor;
if (socketDescriptor > OS_INVALID_SOCKET_DESCRIPTOR)
{
mpCert = PK11_FindCertFromNickname((char*)mCertNickname.data(), (char*)mCertPassword.data());
if (mpCert == NULL)
{
mbInitializeFailed = true;
goto TlsError;
}
unsigned char* szPwd = (unsigned char*) PR_Malloc(mCertPassword.length()+ 1);
strncpy((char*)szPwd, mCertPassword.data(), mCertPassword.length()+1);
mpPrivKey = PK11_FindKeyByAnyCert(mpCert, (char*)szPwd);
if (mpPrivKey == NULL)
{
mbInitializeFailed = true;
goto TlsError;
}
if (tcpSocket)
{
/* Make the socket blocking. */
socketOption.option = PR_SockOpt_Nonblocking;
socketOption.value.non_blocking = PR_FALSE;
prStatus = PR_SetSocketOption(tcpSocket, &socketOption);
if (prStatus != PR_SUCCESS)
{
mbInitializeFailed = true;
goto TlsError;
}
/* Import the socket into the SSL layer. */
mpPRfd = SSL_ImportFD(NULL, tcpSocket);
if (!mpPRfd)
{
mbInitializeFailed = true;
goto TlsError;
}
/* Set configuration options. */
secStatus = SSL_OptionSet(mpPRfd, SSL_SECURITY, PR_TRUE);
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
secStatus = SSL_OptionSet(mpPRfd, SSL_HANDSHAKE_AS_SERVER, PR_TRUE);
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
secStatus = SSL_AuthCertificateHook(mpPRfd,
(SSLAuthCertificate)OsTLS::AuthCertificate,
(void *)CERT_GetDefaultCertDB());
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
secStatus = SSL_BadCertHook(mpPRfd,
(SSLBadCertHandler)OsTLS::BadCertHandler, NULL);
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
secStatus = SSL_HandshakeCallback(mpPRfd,
(SSLHandshakeCallback)OsTLS::HandshakeCallback,
(void*)this);
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
secStatus = SSL_SetPKCS11PinArg(mpPRfd, (void*)szPassword);
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
certKEA = NSS_FindCertKEAType(mpCert);
secStatus = SSL_ConfigSecureServer(mpPRfd, mpCert, mpPrivKey, certKEA);
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
secStatus = SSL_ResetHandshake(mpPRfd, /* asServer */ PR_TRUE);
if (secStatus != SECSuccess)
{
mbInitializeFailed = true;
goto TlsError;
}
PR_Free(szPwd);
}
else
{
mIsConnected = FALSE;
OsConnectionSocket::close();
mbInitializeFailed = true;
}
}
TlsError:
return;
}
CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
{
PRInt32 err;
PRFileDesc *model = NULL;
PRBool ssl2 = PR_FALSE;
PRBool ssl3 = PR_FALSE;
PRBool tlsv1 = PR_FALSE;
struct SessionHandle *data = conn->data;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
int curlerr;
const int *cipher_to_enable;
PRSocketOptionData sock_opt;
long time_left;
PRUint32 timeout;
if (connssl->state == ssl_connection_complete)
return CURLE_OK;
connssl->data = data;
#ifdef HAVE_PK11_CREATEGENERICOBJECT
/* list of all NSS objects we need to destroy in Curl_nss_close() */
connssl->obj_list = Curl_llist_alloc(nss_destroy_object);
if(!connssl->obj_list)
return CURLE_OUT_OF_MEMORY;
#endif
/* FIXME. NSS doesn't support multiple databases open at the same time. */
PR_Lock(nss_initlock);
curlerr = init_nss(conn->data);
if(CURLE_OK != curlerr) {
PR_Unlock(nss_initlock);
goto error;
}
curlerr = CURLE_SSL_CONNECT_ERROR;
#ifdef HAVE_PK11_CREATEGENERICOBJECT
if(!mod) {
char *configstring = aprintf("library=%s name=PEM", pem_library);
if(!configstring) {
PR_Unlock(nss_initlock);
goto error;
}
mod = SECMOD_LoadUserModule(configstring, NULL, PR_FALSE);
free(configstring);
if(!mod || !mod->loaded) {
if(mod) {
SECMOD_DestroyModule(mod);
mod = NULL;
}
infof(data, "WARNING: failed to load NSS PEM library %s. Using "
"OpenSSL PEM certificates will not work.\n", pem_library);
}
}
#endif
PK11_SetPasswordFunc(nss_get_password);
PR_Unlock(nss_initlock);
model = PR_NewTCPSocket();
if(!model)
goto error;
model = SSL_ImportFD(NULL, model);
/* make the socket nonblocking */
sock_opt.option = PR_SockOpt_Nonblocking;
sock_opt.value.non_blocking = PR_TRUE;
if(PR_SetSocketOption(model, &sock_opt) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_SECURITY, PR_TRUE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_SERVER, PR_FALSE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE) != SECSuccess)
goto error;
switch (data->set.ssl.version) {
default:
case CURL_SSLVERSION_DEFAULT:
ssl3 = PR_TRUE;
if (data->state.ssl_connect_retry)
infof(data, "TLS disabled due to previous handshake failure\n");
else
tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_TLSv1:
tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv2:
ssl2 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv3:
ssl3 = PR_TRUE;
break;
}
if(SSL_OptionSet(model, SSL_ENABLE_SSL2, ssl2) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_SSL3, ssl3) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_TLS, tlsv1) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_V2_COMPATIBLE_HELLO, ssl2) != SECSuccess)
goto error;
/* reset the flag to avoid an infinite loop */
data->state.ssl_connect_retry = FALSE;
/* enable all ciphers from enable_ciphers_by_default */
cipher_to_enable = enable_ciphers_by_default;
while (SSL_NULL_WITH_NULL_NULL != *cipher_to_enable) {
if (SSL_CipherPrefSet(model, *cipher_to_enable, PR_TRUE) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
cipher_to_enable++;
}
if(data->set.ssl.cipher_list) {
if(set_ciphers(data, model, data->set.ssl.cipher_list) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
}
if(data->set.ssl.verifyhost == 1)
infof(data, "warning: ignoring unsupported value (1) of ssl.verifyhost\n");
data->set.ssl.certverifyresult=0; /* not checked yet */
if(SSL_BadCertHook(model, (SSLBadCertHandler) BadCertHandler, conn)
!= SECSuccess) {
goto error;
}
if(SSL_HandshakeCallback(model, (SSLHandshakeCallback) HandshakeCallback,
NULL) != SECSuccess)
goto error;
if(data->set.ssl.verifypeer && (CURLE_OK !=
(curlerr = nss_load_ca_certificates(conn, sockindex))))
goto error;
if (data->set.ssl.CRLfile) {
if(SECSuccess != nss_load_crl(data->set.ssl.CRLfile)) {
curlerr = CURLE_SSL_CRL_BADFILE;
goto error;
}
infof(data,
" CRLfile: %s\n",
data->set.ssl.CRLfile ? data->set.ssl.CRLfile : "none");
}
if(data->set.str[STRING_CERT]) {
bool is_nickname;
char *nickname = fmt_nickname(data, STRING_CERT, &is_nickname);
if(!nickname)
return CURLE_OUT_OF_MEMORY;
if(!is_nickname && !cert_stuff(conn, sockindex, data->set.str[STRING_CERT],
data->set.str[STRING_KEY])) {
/* failf() is already done in cert_stuff() */
free(nickname);
return CURLE_SSL_CERTPROBLEM;
}
/* store the nickname for SelectClientCert() called during handshake */
connssl->client_nickname = nickname;
}
else
connssl->client_nickname = NULL;
if(SSL_GetClientAuthDataHook(model, SelectClientCert,
(void *)connssl) != SECSuccess) {
curlerr = CURLE_SSL_CERTPROBLEM;
goto error;
}
/* Import our model socket onto the existing file descriptor */
connssl->handle = PR_ImportTCPSocket(sockfd);
connssl->handle = SSL_ImportFD(model, connssl->handle);
if(!connssl->handle)
goto error;
PR_Close(model); /* We don't need this any more */
model = NULL;
/* This is the password associated with the cert that we're using */
if (data->set.str[STRING_KEY_PASSWD]) {
SSL_SetPKCS11PinArg(connssl->handle, data->set.str[STRING_KEY_PASSWD]);
}
/* Force handshake on next I/O */
SSL_ResetHandshake(connssl->handle, /* asServer */ PR_FALSE);
SSL_SetURL(connssl->handle, conn->host.name);
/* check timeout situation */
time_left = Curl_timeleft(data, NULL, TRUE);
if(time_left < 0L) {
failf(data, "timed out before SSL handshake");
goto error;
}
timeout = PR_MillisecondsToInterval((PRUint32) time_left);
/* Force the handshake now */
if(SSL_ForceHandshakeWithTimeout(connssl->handle, timeout) != SECSuccess) {
if(conn->data->set.ssl.certverifyresult == SSL_ERROR_BAD_CERT_DOMAIN)
curlerr = CURLE_PEER_FAILED_VERIFICATION;
else if(conn->data->set.ssl.certverifyresult!=0)
curlerr = CURLE_SSL_CACERT;
goto error;
}
connssl->state = ssl_connection_complete;
conn->recv[sockindex] = nss_recv;
conn->send[sockindex] = nss_send;
display_conn_info(conn, connssl->handle);
if (data->set.str[STRING_SSL_ISSUERCERT]) {
SECStatus ret = SECFailure;
bool is_nickname;
char *nickname = fmt_nickname(data, STRING_SSL_ISSUERCERT, &is_nickname);
if(!nickname)
return CURLE_OUT_OF_MEMORY;
if(is_nickname)
/* we support only nicknames in case of STRING_SSL_ISSUERCERT for now */
ret = check_issuer_cert(connssl->handle, nickname);
free(nickname);
if(SECFailure == ret) {
infof(data,"SSL certificate issuer check failed\n");
curlerr = CURLE_SSL_ISSUER_ERROR;
goto error;
}
else {
infof(data, "SSL certificate issuer check ok\n");
}
}
return CURLE_OK;
error:
/* reset the flag to avoid an infinite loop */
data->state.ssl_connect_retry = FALSE;
err = PR_GetError();
if(handle_cc_error(err, data))
curlerr = CURLE_SSL_CERTPROBLEM;
else
infof(data, "NSS error %d\n", err);
if(model)
PR_Close(model);
if (ssl3 && tlsv1 && isTLSIntoleranceError(err)) {
/* schedule reconnect through Curl_retry_request() */
data->state.ssl_connect_retry = TRUE;
infof(data, "Error in TLS handshake, trying SSLv3...\n");
return CURLE_OK;
}
return curlerr;
}