aboutsummaryrefslogtreecommitdiffstats
path: root/external/libcurl_android/jni/libcurl/lib/vtls/nss.c
diff options
context:
space:
mode:
Diffstat (limited to 'external/libcurl_android/jni/libcurl/lib/vtls/nss.c')
-rwxr-xr-xexternal/libcurl_android/jni/libcurl/lib/vtls/nss.c1943
1 files changed, 0 insertions, 1943 deletions
diff --git a/external/libcurl_android/jni/libcurl/lib/vtls/nss.c b/external/libcurl_android/jni/libcurl/lib/vtls/nss.c
deleted file mode 100755
index 83b3e323..00000000
--- a/external/libcurl_android/jni/libcurl/lib/vtls/nss.c
+++ /dev/null
@@ -1,1943 +0,0 @@
-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-/*
- * Source file for all NSS-specific code for the TLS/SSL layer. No code
- * but vtls.c should ever call or use these functions.
- */
-
-#include "curl_setup.h"
-
-#ifdef USE_NSS
-
-#include "urldata.h"
-#include "sendf.h"
-#include "formdata.h" /* for the boundary function */
-#include "url.h" /* for the ssl config check function */
-#include "connect.h"
-#include "strequal.h"
-#include "select.h"
-#include "vtls.h"
-#include "llist.h"
-
-#define _MPRINTF_REPLACE /* use the internal *printf() functions */
-#include <curl/mprintf.h>
-
-#include "nssg.h"
-#include <nspr.h>
-#include <nss.h>
-#include <ssl.h>
-#include <sslerr.h>
-#include <secerr.h>
-#include <secmod.h>
-#include <sslproto.h>
-#include <prtypes.h>
-#include <pk11pub.h>
-#include <prio.h>
-#include <secitem.h>
-#include <secport.h>
-#include <certdb.h>
-#include <base64.h>
-#include <cert.h>
-#include <prerror.h>
-
-#include "curl_memory.h"
-#include "rawstr.h"
-#include "warnless.h"
-#include "x509asn1.h"
-
-/* The last #include file should be: */
-#include "memdebug.h"
-
-#define SSL_DIR "/etc/pki/nssdb"
-
-/* enough to fit the string "PEM Token #[0|1]" */
-#define SLOTSIZE 13
-
-PRFileDesc *PR_ImportTCPSocket(PRInt32 osfd);
-
-PRLock * nss_initlock = NULL;
-PRLock * nss_crllock = NULL;
-struct curl_llist *nss_crl_list = NULL;
-NSSInitContext * nss_context = NULL;
-
-volatile int initialized = 0;
-
-typedef struct {
- const char *name;
- int num;
-} cipher_s;
-
-#define PK11_SETATTRS(_attr, _idx, _type, _val, _len) do { \
- CK_ATTRIBUTE *ptr = (_attr) + ((_idx)++); \
- ptr->type = (_type); \
- ptr->pValue = (_val); \
- ptr->ulValueLen = (_len); \
-} WHILE_FALSE
-
-#define CERT_NewTempCertificate __CERT_NewTempCertificate
-
-#define NUM_OF_CIPHERS sizeof(cipherlist)/sizeof(cipherlist[0])
-static const cipher_s cipherlist[] = {
- /* SSL2 cipher suites */
- {"rc4", SSL_EN_RC4_128_WITH_MD5},
- {"rc4-md5", SSL_EN_RC4_128_WITH_MD5},
- {"rc4export", SSL_EN_RC4_128_EXPORT40_WITH_MD5},
- {"rc2", SSL_EN_RC2_128_CBC_WITH_MD5},
- {"rc2export", SSL_EN_RC2_128_CBC_EXPORT40_WITH_MD5},
- {"des", SSL_EN_DES_64_CBC_WITH_MD5},
- {"desede3", SSL_EN_DES_192_EDE3_CBC_WITH_MD5},
- /* SSL3/TLS cipher suites */
- {"rsa_rc4_128_md5", SSL_RSA_WITH_RC4_128_MD5},
- {"rsa_rc4_128_sha", SSL_RSA_WITH_RC4_128_SHA},
- {"rsa_3des_sha", SSL_RSA_WITH_3DES_EDE_CBC_SHA},
- {"rsa_des_sha", SSL_RSA_WITH_DES_CBC_SHA},
- {"rsa_rc4_40_md5", SSL_RSA_EXPORT_WITH_RC4_40_MD5},
- {"rsa_rc2_40_md5", SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5},
- {"rsa_null_md5", SSL_RSA_WITH_NULL_MD5},
- {"rsa_null_sha", SSL_RSA_WITH_NULL_SHA},
- {"fips_3des_sha", SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA},
- {"fips_des_sha", SSL_RSA_FIPS_WITH_DES_CBC_SHA},
- {"fortezza", SSL_FORTEZZA_DMS_WITH_FORTEZZA_CBC_SHA},
- {"fortezza_rc4_128_sha", SSL_FORTEZZA_DMS_WITH_RC4_128_SHA},
- {"fortezza_null", SSL_FORTEZZA_DMS_WITH_NULL_SHA},
- /* TLS 1.0: Exportable 56-bit Cipher Suites. */
- {"rsa_des_56_sha", TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA},
- {"rsa_rc4_56_sha", TLS_RSA_EXPORT1024_WITH_RC4_56_SHA},
- /* AES ciphers. */
- {"dhe_dss_aes_128_cbc_sha", TLS_DHE_DSS_WITH_AES_128_CBC_SHA},
- {"dhe_dss_aes_256_cbc_sha", TLS_DHE_DSS_WITH_AES_256_CBC_SHA},
- {"dhe_rsa_aes_128_cbc_sha", TLS_DHE_RSA_WITH_AES_128_CBC_SHA},
- {"dhe_rsa_aes_256_cbc_sha", TLS_DHE_RSA_WITH_AES_256_CBC_SHA},
- {"rsa_aes_128_sha", TLS_RSA_WITH_AES_128_CBC_SHA},
- {"rsa_aes_256_sha", TLS_RSA_WITH_AES_256_CBC_SHA},
- /* ECC ciphers. */
- {"ecdh_ecdsa_null_sha", TLS_ECDH_ECDSA_WITH_NULL_SHA},
- {"ecdh_ecdsa_rc4_128_sha", TLS_ECDH_ECDSA_WITH_RC4_128_SHA},
- {"ecdh_ecdsa_3des_sha", TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA},
- {"ecdh_ecdsa_aes_128_sha", TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA},
- {"ecdh_ecdsa_aes_256_sha", TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA},
- {"ecdhe_ecdsa_null_sha", TLS_ECDHE_ECDSA_WITH_NULL_SHA},
- {"ecdhe_ecdsa_rc4_128_sha", TLS_ECDHE_ECDSA_WITH_RC4_128_SHA},
- {"ecdhe_ecdsa_3des_sha", TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA},
- {"ecdhe_ecdsa_aes_128_sha", TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA},
- {"ecdhe_ecdsa_aes_256_sha", TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA},
- {"ecdh_rsa_null_sha", TLS_ECDH_RSA_WITH_NULL_SHA},
- {"ecdh_rsa_128_sha", TLS_ECDH_RSA_WITH_RC4_128_SHA},
- {"ecdh_rsa_3des_sha", TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA},
- {"ecdh_rsa_aes_128_sha", TLS_ECDH_RSA_WITH_AES_128_CBC_SHA},
- {"ecdh_rsa_aes_256_sha", TLS_ECDH_RSA_WITH_AES_256_CBC_SHA},
- {"echde_rsa_null", TLS_ECDHE_RSA_WITH_NULL_SHA},
- {"ecdhe_rsa_rc4_128_sha", TLS_ECDHE_RSA_WITH_RC4_128_SHA},
- {"ecdhe_rsa_3des_sha", TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA},
- {"ecdhe_rsa_aes_128_sha", TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA},
- {"ecdhe_rsa_aes_256_sha", TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA},
- {"ecdh_anon_null_sha", TLS_ECDH_anon_WITH_NULL_SHA},
- {"ecdh_anon_rc4_128sha", TLS_ECDH_anon_WITH_RC4_128_SHA},
- {"ecdh_anon_3des_sha", TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA},
- {"ecdh_anon_aes_128_sha", TLS_ECDH_anon_WITH_AES_128_CBC_SHA},
- {"ecdh_anon_aes_256_sha", TLS_ECDH_anon_WITH_AES_256_CBC_SHA},
-#ifdef TLS_RSA_WITH_NULL_SHA256
- /* new HMAC-SHA256 cipher suites specified in RFC */
- {"rsa_null_sha_256", TLS_RSA_WITH_NULL_SHA256},
- {"rsa_aes_128_cbc_sha_256", TLS_RSA_WITH_AES_128_CBC_SHA256},
- {"rsa_aes_256_cbc_sha_256", TLS_RSA_WITH_AES_256_CBC_SHA256},
- {"dhe_rsa_aes_128_cbc_sha_256", TLS_DHE_RSA_WITH_AES_128_CBC_SHA256},
- {"dhe_rsa_aes_256_cbc_sha_256", TLS_DHE_RSA_WITH_AES_256_CBC_SHA256},
- {"ecdhe_ecdsa_aes_128_cbc_sha_256", TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256},
- {"ecdhe_rsa_aes_128_cbc_sha_256", TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256},
-#endif
-#ifdef TLS_RSA_WITH_AES_128_GCM_SHA256
- /* AES GCM cipher suites in RFC 5288 and RFC 5289 */
- {"rsa_aes_128_gcm_sha_256", TLS_RSA_WITH_AES_128_GCM_SHA256},
- {"dhe_rsa_aes_128_gcm_sha_256", TLS_DHE_RSA_WITH_AES_128_GCM_SHA256},
- {"dhe_dss_aes_128_gcm_sha_256", TLS_DHE_DSS_WITH_AES_128_GCM_SHA256},
- {"ecdhe_ecdsa_aes_128_gcm_sha_256", TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
- {"ecdh_ecdsa_aes_128_gcm_sha_256", TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256},
- {"ecdhe_rsa_aes_128_gcm_sha_256", TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256},
- {"ecdh_rsa_aes_128_gcm_sha_256", TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256},
-#endif
-};
-
-static const char* pem_library = "libnsspem.so";
-SECMODModule* mod = NULL;
-
-/* NSPR I/O layer we use to detect blocking direction during SSL handshake */
-static PRDescIdentity nspr_io_identity = PR_INVALID_IO_LAYER;
-static PRIOMethods nspr_io_methods;
-
-static const char* nss_error_to_name(PRErrorCode code)
-{
- const char *name = PR_ErrorToName(code);
- if(name)
- return name;
-
- return "unknown error";
-}
-
-static void nss_print_error_message(struct SessionHandle *data, PRUint32 err)
-{
- failf(data, "%s", PR_ErrorToString(err, PR_LANGUAGE_I_DEFAULT));
-}
-
-static SECStatus set_ciphers(struct SessionHandle *data, PRFileDesc * model,
- char *cipher_list)
-{
- unsigned int i;
- PRBool cipher_state[NUM_OF_CIPHERS];
- PRBool found;
- char *cipher;
-
- /* First disable all ciphers. This uses a different max value in case
- * NSS adds more ciphers later we don't want them available by
- * accident
- */
- for(i=0; i<SSL_NumImplementedCiphers; i++) {
- SSL_CipherPrefSet(model, SSL_ImplementedCiphers[i], PR_FALSE);
- }
-
- /* Set every entry in our list to false */
- for(i=0; i<NUM_OF_CIPHERS; i++) {
- cipher_state[i] = PR_FALSE;
- }
-
- cipher = cipher_list;
-
- while(cipher_list && (cipher_list[0])) {
- while((*cipher) && (ISSPACE(*cipher)))
- ++cipher;
-
- if((cipher_list = strchr(cipher, ','))) {
- *cipher_list++ = '\0';
- }
-
- found = PR_FALSE;
-
- for(i=0; i<NUM_OF_CIPHERS; i++) {
- if(Curl_raw_equal(cipher, cipherlist[i].name)) {
- cipher_state[i] = PR_TRUE;
- found = PR_TRUE;
- break;
- }
- }
-
- if(found == PR_FALSE) {
- failf(data, "Unknown cipher in list: %s", cipher);
- return SECFailure;
- }
-
- if(cipher_list) {
- cipher = cipher_list;
- }
- }
-
- /* Finally actually enable the selected ciphers */
- for(i=0; i<NUM_OF_CIPHERS; i++) {
- if(!cipher_state[i])
- continue;
-
- if(SSL_CipherPrefSet(model, cipherlist[i].num, PR_TRUE) != SECSuccess) {
- failf(data, "cipher-suite not supported by NSS: %s", cipherlist[i].name);
- return SECFailure;
- }
- }
-
- return SECSuccess;
-}
-
-/*
- * Get the number of ciphers that are enabled. We use this to determine
- * if we need to call NSS_SetDomesticPolicy() to enable the default ciphers.
- */
-static int num_enabled_ciphers(void)
-{
- PRInt32 policy = 0;
- int count = 0;
- unsigned int i;
-
- for(i=0; i<NUM_OF_CIPHERS; i++) {
- SSL_CipherPolicyGet(cipherlist[i].num, &policy);
- if(policy)
- count++;
- }
- return count;
-}
-
-/*
- * Determine whether the nickname passed in is a filename that needs to
- * be loaded as a PEM or a regular NSS nickname.
- *
- * returns 1 for a file
- * returns 0 for not a file (NSS nickname)
- */
-static int is_file(const char *filename)
-{
- struct_stat st;
-
- if(filename == NULL)
- return 0;
-
- if(stat(filename, &st) == 0)
- if(S_ISREG(st.st_mode))
- return 1;
-
- return 0;
-}
-
-/* Check if the given string is filename or nickname of a certificate. If the
- * given string is recognized as filename, return NULL. If the given string is
- * recognized as nickname, return a duplicated string. The returned string
- * should be later deallocated using free(). If the OOM failure occurs, we
- * return NULL, too.
- */
-static char* dup_nickname(struct SessionHandle *data, enum dupstring cert_kind)
-{
- const char *str = data->set.str[cert_kind];
- const char *n;
-
- if(!is_file(str))
- /* no such file exists, use the string as nickname */
- return strdup(str);
-
- /* search the last slash; we require at least one slash in a file name */
- n = strrchr(str, '/');
- if(!n) {
- infof(data, "warning: certificate file name \"%s\" handled as nickname; "
- "please use \"./%s\" to force file name\n", str, str);
- return strdup(str);
- }
-
- /* we'll use the PEM reader to read the certificate from file */
- return NULL;
-}
-
-/* Call PK11_CreateGenericObject() with the given obj_class and filename. If
- * the call succeeds, append the object handle to the list of objects so that
- * the object can be destroyed in Curl_nss_close(). */
-static CURLcode nss_create_object(struct ssl_connect_data *ssl,
- CK_OBJECT_CLASS obj_class,
- const char *filename, bool cacert)
-{
- PK11SlotInfo *slot;
- PK11GenericObject *obj;
- CK_BBOOL cktrue = CK_TRUE;
- CK_BBOOL ckfalse = CK_FALSE;
- CK_ATTRIBUTE attrs[/* max count of attributes */ 4];
- int attr_cnt = 0;
- CURLcode err = (cacert)
- ? CURLE_SSL_CACERT_BADFILE
- : CURLE_SSL_CERTPROBLEM;
-
- const int slot_id = (cacert) ? 0 : 1;
- char *slot_name = aprintf("PEM Token #%d", slot_id);
- if(!slot_name)
- return CURLE_OUT_OF_MEMORY;
-
- slot = PK11_FindSlotByName(slot_name);
- free(slot_name);
- if(!slot)
- return err;
-
- PK11_SETATTRS(attrs, attr_cnt, CKA_CLASS, &obj_class, sizeof(obj_class));
- PK11_SETATTRS(attrs, attr_cnt, CKA_TOKEN, &cktrue, sizeof(CK_BBOOL));
- PK11_SETATTRS(attrs, attr_cnt, CKA_LABEL, (unsigned char *)filename,
- strlen(filename) + 1);
-
- if(CKO_CERTIFICATE == obj_class) {
- CK_BBOOL *pval = (cacert) ? (&cktrue) : (&ckfalse);
- PK11_SETATTRS(attrs, attr_cnt, CKA_TRUST, pval, sizeof(*pval));
- }
-
- obj = PK11_CreateGenericObject(slot, attrs, attr_cnt, PR_FALSE);
- PK11_FreeSlot(slot);
- if(!obj)
- return err;
-
- if(!Curl_llist_insert_next(ssl->obj_list, ssl->obj_list->tail, obj)) {
- PK11_DestroyGenericObject(obj);
- return CURLE_OUT_OF_MEMORY;
- }
-
- if(!cacert && CKO_CERTIFICATE == obj_class)
- /* store reference to a client certificate */
- ssl->obj_clicert = obj;
-
- return CURLE_OK;
-}
-
-/* Destroy the NSS object whose handle is given by ptr. This function is
- * a callback of Curl_llist_alloc() used by Curl_llist_destroy() to destroy
- * NSS objects in Curl_nss_close() */
-static void nss_destroy_object(void *user, void *ptr)
-{
- PK11GenericObject *obj = (PK11GenericObject *)ptr;
- (void) user;
- PK11_DestroyGenericObject(obj);
-}
-
-/* same as nss_destroy_object() but for CRL items */
-static void nss_destroy_crl_item(void *user, void *ptr)
-{
- SECItem *crl_der = (SECItem *)ptr;
- (void) user;
- SECITEM_FreeItem(crl_der, PR_TRUE);
-}
-
-static CURLcode nss_load_cert(struct ssl_connect_data *ssl,
- const char *filename, PRBool cacert)
-{
- CURLcode err = (cacert)
- ? CURLE_SSL_CACERT_BADFILE
- : CURLE_SSL_CERTPROBLEM;
-
- /* libnsspem.so leaks memory if the requested file does not exist. For more
- * details, go to <https://bugzilla.redhat.com/734760>. */
- if(is_file(filename))
- err = nss_create_object(ssl, CKO_CERTIFICATE, filename, cacert);
-
- if(CURLE_OK == err && !cacert) {
- /* we have successfully loaded a client certificate */
- CERTCertificate *cert;
- char *nickname = NULL;
- char *n = strrchr(filename, '/');
- if(n)
- n++;
-
- /* The following undocumented magic helps to avoid a SIGSEGV on call
- * of PK11_ReadRawAttribute() from SelectClientCert() when using an
- * immature version of libnsspem.so. For more details, go to
- * <https://bugzilla.redhat.com/733685>. */
- nickname = aprintf("PEM Token #1:%s", n);
- if(nickname) {
- cert = PK11_FindCertFromNickname(nickname, NULL);
- if(cert)
- CERT_DestroyCertificate(cert);
-
- free(nickname);
- }
- }
-
- return err;
-}
-
-/* add given CRL to cache if it is not already there */
-static CURLcode nss_cache_crl(SECItem *crl_der)
-{
- CERTCertDBHandle *db = CERT_GetDefaultCertDB();
- CERTSignedCrl *crl = SEC_FindCrlByDERCert(db, crl_der, 0);
- if(crl) {
- /* CRL already cached */
- SEC_DestroyCrl(crl);
- SECITEM_FreeItem(crl_der, PR_TRUE);
- return CURLE_SSL_CRL_BADFILE;
- }
-
- /* acquire lock before call of CERT_CacheCRL() and accessing nss_crl_list */
- PR_Lock(nss_crllock);
-
- /* store the CRL item so that we can free it in Curl_nss_cleanup() */
- if(!Curl_llist_insert_next(nss_crl_list, nss_crl_list->tail, crl_der)) {
- SECITEM_FreeItem(crl_der, PR_TRUE);
- PR_Unlock(nss_crllock);
- return CURLE_OUT_OF_MEMORY;
- }
-
- if(SECSuccess != CERT_CacheCRL(db, crl_der)) {
- /* unable to cache CRL */
- PR_Unlock(nss_crllock);
- return CURLE_SSL_CRL_BADFILE;
- }
-
- /* we need to clear session cache, so that the CRL could take effect */
- SSL_ClearSessionCache();
- PR_Unlock(nss_crllock);
- return CURLE_OK;
-}
-
-static CURLcode nss_load_crl(const char* crlfilename)
-{
- PRFileDesc *infile;
- PRFileInfo info;
- SECItem filedata = { 0, NULL, 0 };
- SECItem *crl_der = NULL;
- char *body;
-
- infile = PR_Open(crlfilename, PR_RDONLY, 0);
- if(!infile)
- return CURLE_SSL_CRL_BADFILE;
-
- if(PR_SUCCESS != PR_GetOpenFileInfo(infile, &info))
- goto fail;
-
- if(!SECITEM_AllocItem(NULL, &filedata, info.size + /* zero ended */ 1))
- goto fail;
-
- if(info.size != PR_Read(infile, filedata.data, info.size))
- goto fail;
-
- crl_der = SECITEM_AllocItem(NULL, NULL, 0U);
- if(!crl_der)
- goto fail;
-
- /* place a trailing zero right after the visible data */
- body = (char*)filedata.data;
- body[--filedata.len] = '\0';
-
- body = strstr(body, "-----BEGIN");
- if(body) {
- /* assume ASCII */
- char *trailer;
- char *begin = PORT_Strchr(body, '\n');
- if(!begin)
- begin = PORT_Strchr(body, '\r');
- if(!begin)
- goto fail;
-
- trailer = strstr(++begin, "-----END");
- if(!trailer)
- goto fail;
-
- /* retrieve DER from ASCII */
- *trailer = '\0';
- if(ATOB_ConvertAsciiToItem(crl_der, begin))
- goto fail;
-
- SECITEM_FreeItem(&filedata, PR_FALSE);
- }
- else
- /* assume DER */
- *crl_der = filedata;
-
- PR_Close(infile);
- return nss_cache_crl(crl_der);
-
-fail:
- PR_Close(infile);
- SECITEM_FreeItem(crl_der, PR_TRUE);
- SECITEM_FreeItem(&filedata, PR_FALSE);
- return CURLE_SSL_CRL_BADFILE;
-}
-
-static CURLcode nss_load_key(struct connectdata *conn, int sockindex,
- char *key_file)
-{
- PK11SlotInfo *slot;
- SECStatus status;
- CURLcode rv;
- struct ssl_connect_data *ssl = conn->ssl;
- (void)sockindex; /* unused */
-
- rv = nss_create_object(ssl, CKO_PRIVATE_KEY, key_file, FALSE);
- if(CURLE_OK != rv) {
- PR_SetError(SEC_ERROR_BAD_KEY, 0);
- return rv;
- }
-
- slot = PK11_FindSlotByName("PEM Token #1");
- if(!slot)
- return CURLE_SSL_CERTPROBLEM;
-
- /* This will force the token to be seen as re-inserted */
- SECMOD_WaitForAnyTokenEvent(mod, 0, 0);
- PK11_IsPresent(slot);
-
- status = PK11_Authenticate(slot, PR_TRUE,
- conn->data->set.str[STRING_KEY_PASSWD]);
- PK11_FreeSlot(slot);
- return (SECSuccess == status)
- ? CURLE_OK
- : CURLE_SSL_CERTPROBLEM;
-}
-
-static int display_error(struct connectdata *conn, PRInt32 err,
- const char *filename)
-{
- switch(err) {
- case SEC_ERROR_BAD_PASSWORD:
- failf(conn->data, "Unable to load client key: Incorrect password");
- return 1;
- case SEC_ERROR_UNKNOWN_CERT:
- failf(conn->data, "Unable to load certificate %s", filename);
- return 1;
- default:
- break;
- }
- return 0; /* The caller will print a generic error */
-}
-
-static CURLcode cert_stuff(struct connectdata *conn, int sockindex,
- char *cert_file, char *key_file)
-{
- struct SessionHandle *data = conn->data;
- CURLcode rv;
-
- if(cert_file) {
- rv = nss_load_cert(&conn->ssl[sockindex], cert_file, PR_FALSE);
- if(CURLE_OK != rv) {
- const PRErrorCode err = PR_GetError();
- if(!display_error(conn, err, cert_file)) {
- const char *err_name = nss_error_to_name(err);
- failf(data, "unable to load client cert: %d (%s)", err, err_name);
- }
-
- return rv;
- }
- }
-
- if(key_file || (is_file(cert_file))) {
- if(key_file)
- rv = nss_load_key(conn, sockindex, key_file);
- else
- /* In case the cert file also has the key */
- rv = nss_load_key(conn, sockindex, cert_file);
- if(CURLE_OK != rv) {
- const PRErrorCode err = PR_GetError();
- if(!display_error(conn, err, key_file)) {
- const char *err_name = nss_error_to_name(err);
- failf(data, "unable to load client key: %d (%s)", err, err_name);
- }
-
- return rv;
- }
- }
-
- return CURLE_OK;
-}
-
-static char * nss_get_password(PK11SlotInfo * slot, PRBool retry, void *arg)
-{
- (void)slot; /* unused */
- if(retry || NULL == arg)
- return NULL;
- else
- return (char *)PORT_Strdup((char *)arg);
-}
-
-/* bypass the default SSL_AuthCertificate() hook in case we do not want to
- * verify peer */
-static SECStatus nss_auth_cert_hook(void *arg, PRFileDesc *fd, PRBool checksig,
- PRBool isServer)
-{
- struct connectdata *conn = (struct connectdata *)arg;
- if(!conn->data->set.ssl.verifypeer) {
- infof(conn->data, "skipping SSL peer certificate verification\n");
- return SECSuccess;
- }
-
- return SSL_AuthCertificate(CERT_GetDefaultCertDB(), fd, checksig, isServer);
-}
-
-/**
- * Inform the application that the handshake is complete.
- */
-static void HandshakeCallback(PRFileDesc *sock, void *arg)
-{
-#ifdef USE_NGHTTP2
- struct connectdata *conn = (struct connectdata*) arg;
- unsigned int buflenmax = 50;
- unsigned char buf[50];
- unsigned int buflen;
- SSLNextProtoState state;
-
- if(!conn->data->set.ssl_enable_npn && !conn->data->set.ssl_enable_alpn) {
- return;
- }
-
- if(SSL_GetNextProto(sock, &state, buf, &buflen, buflenmax) == SECSuccess) {
-
- switch(state) {
- case SSL_NEXT_PROTO_NO_SUPPORT:
- case SSL_NEXT_PROTO_NO_OVERLAP:
- infof(conn->data, "TLS, neither ALPN nor NPN succeeded\n");
- return;
-#ifdef SSL_ENABLE_ALPN
- case SSL_NEXT_PROTO_SELECTED:
- infof(conn->data, "ALPN, server accepted to use %.*s\n", buflen, buf);
- break;
-#endif
- case SSL_NEXT_PROTO_NEGOTIATED:
- infof(conn->data, "NPN, server accepted to use %.*s\n", buflen, buf);
- break;
- }
-
- if(buflen == NGHTTP2_PROTO_VERSION_ID_LEN &&
- memcmp(NGHTTP2_PROTO_VERSION_ID, buf, NGHTTP2_PROTO_VERSION_ID_LEN)
- == 0) {
- conn->negnpn = NPN_HTTP2;
- }
- else if(buflen == ALPN_HTTP_1_1_LENGTH && memcmp(ALPN_HTTP_1_1, buf,
- ALPN_HTTP_1_1_LENGTH)) {
- conn->negnpn = NPN_HTTP1_1;
- }
- }
-#else
- (void)sock;
- (void)arg;
-#endif
-}
-
-static void display_cert_info(struct SessionHandle *data,
- CERTCertificate *cert)
-{
- char *subject, *issuer, *common_name;
- PRExplodedTime printableTime;
- char timeString[256];
- PRTime notBefore, notAfter;
-
- subject = CERT_NameToAscii(&cert->subject);
- issuer = CERT_NameToAscii(&cert->issuer);
- common_name = CERT_GetCommonName(&cert->subject);
- infof(data, "\tsubject: %s\n", subject);
-
- CERT_GetCertTimes(cert, &notBefore, &notAfter);
- PR_ExplodeTime(notBefore, PR_GMTParameters, &printableTime);
- PR_FormatTime(timeString, 256, "%b %d %H:%M:%S %Y GMT", &printableTime);
- infof(data, "\tstart date: %s\n", timeString);
- PR_ExplodeTime(notAfter, PR_GMTParameters, &printableTime);
- PR_FormatTime(timeString, 256, "%b %d %H:%M:%S %Y GMT", &printableTime);
- infof(data, "\texpire date: %s\n", timeString);
- infof(data, "\tcommon name: %s\n", common_name);
- infof(data, "\tissuer: %s\n", issuer);
-
- PR_Free(subject);
- PR_Free(issuer);
- PR_Free(common_name);
-}
-
-static void display_conn_info(struct connectdata *conn, PRFileDesc *sock)
-{
- SSLChannelInfo channel;
- SSLCipherSuiteInfo suite;
- CERTCertificate *cert;
- CERTCertificate *cert2;
- CERTCertificate *cert3;
- PRTime now;
- int i;
-
- if(SSL_GetChannelInfo(sock, &channel, sizeof channel) ==
- SECSuccess && channel.length == sizeof channel &&
- channel.cipherSuite) {
- if(SSL_GetCipherSuiteInfo(channel.cipherSuite,
- &suite, sizeof suite) == SECSuccess) {
- infof(conn->data, "SSL connection using %s\n", suite.cipherSuiteName);
- }
- }
-
- cert = SSL_PeerCertificate(sock);
-
- if(cert) {
- infof(conn->data, "Server certificate:\n");
-
- if(!conn->data->set.ssl.certinfo) {
- display_cert_info(conn->data, cert);
- CERT_DestroyCertificate(cert);
- }
- else {
- /* Count certificates in chain. */
- now = PR_Now();
- i = 1;
- if(!cert->isRoot) {
- cert2 = CERT_FindCertIssuer(cert, now, certUsageSSLCA);
- while(cert2) {
- i++;
- if(cert2->isRoot) {
- CERT_DestroyCertificate(cert2);
- break;
- }
- cert3 = CERT_FindCertIssuer(cert2, now, certUsageSSLCA);
- CERT_DestroyCertificate(cert2);
- cert2 = cert3;
- }
- }
- Curl_ssl_init_certinfo(conn->data, i);
- for(i = 0; cert; cert = cert2) {
- Curl_extract_certinfo(conn, i++, (char *)cert->derCert.data,
- (char *)cert->derCert.data + cert->derCert.len);
- if(cert->isRoot) {
- CERT_DestroyCertificate(cert);
- break;
- }
- cert2 = CERT_FindCertIssuer(cert, now, certUsageSSLCA);
- CERT_DestroyCertificate(cert);
- }
- }
- }
-
- return;
-}
-
-static SECStatus BadCertHandler(void *arg, PRFileDesc *sock)
-{
- struct connectdata *conn = (struct connectdata *)arg;
- struct SessionHandle *data = conn->data;
- PRErrorCode err = PR_GetError();
- CERTCertificate *cert;
-
- /* remember the cert verification result */
- data->set.ssl.certverifyresult = err;
-
- if(err == SSL_ERROR_BAD_CERT_DOMAIN && !data->set.ssl.verifyhost)
- /* we are asked not to verify the host name */
- return SECSuccess;
-
- /* print only info about the cert, the error is printed off the callback */
- cert = SSL_PeerCertificate(sock);
- if(cert) {
- infof(data, "Server certificate:\n");
- display_cert_info(data, cert);
- CERT_DestroyCertificate(cert);
- }
-
- return SECFailure;
-}
-
-/**
- *
- * Check that the Peer certificate's issuer certificate matches the one found
- * by issuer_nickname. This is not exactly the way OpenSSL and GNU TLS do the
- * issuer check, so we provide comments that mimic the OpenSSL
- * X509_check_issued function (in x509v3/v3_purp.c)
- */
-static SECStatus check_issuer_cert(PRFileDesc *sock,
- char *issuer_nickname)
-{
- CERTCertificate *cert,*cert_issuer,*issuer;
- SECStatus res=SECSuccess;
- void *proto_win = NULL;
-
- /*
- PRArenaPool *tmpArena = NULL;
- CERTAuthKeyID *authorityKeyID = NULL;
- SECITEM *caname = NULL;
- */
-
- cert = SSL_PeerCertificate(sock);
- cert_issuer = CERT_FindCertIssuer(cert,PR_Now(),certUsageObjectSigner);
-
- proto_win = SSL_RevealPinArg(sock);
- issuer = PK11_FindCertFromNickname(issuer_nickname, proto_win);
-
- if((!cert_issuer) || (!issuer))
- res = SECFailure;
- else if(SECITEM_CompareItem(&cert_issuer->derCert,
- &issuer->derCert)!=SECEqual)
- res = SECFailure;
-
- CERT_DestroyCertificate(cert);
- CERT_DestroyCertificate(issuer);
- CERT_DestroyCertificate(cert_issuer);
- return res;
-}
-
-/**
- *
- * Callback to pick the SSL client certificate.
- */
-static SECStatus SelectClientCert(void *arg, PRFileDesc *sock,
- struct CERTDistNamesStr *caNames,
- struct CERTCertificateStr **pRetCert,
- struct SECKEYPrivateKeyStr **pRetKey)
-{
- struct ssl_connect_data *connssl = (struct ssl_connect_data *)arg;
- struct SessionHandle *data = connssl->data;
- const char *nickname = connssl->client_nickname;
-
- if(connssl->obj_clicert) {
- /* use the cert/key provided by PEM reader */
- static const char pem_slotname[] = "PEM Token #1";
- SECItem cert_der = { 0, NULL, 0 };
- void *proto_win = SSL_RevealPinArg(sock);
- struct CERTCertificateStr *cert;
- struct SECKEYPrivateKeyStr *key;
-
- PK11SlotInfo *slot = PK11_FindSlotByName(pem_slotname);
- if(NULL == slot) {
- failf(data, "NSS: PK11 slot not found: %s", pem_slotname);
- return SECFailure;
- }
-
- if(PK11_ReadRawAttribute(PK11_TypeGeneric, connssl->obj_clicert, CKA_VALUE,
- &cert_der) != SECSuccess) {
- failf(data, "NSS: CKA_VALUE not found in PK11 generic object");
- PK11_FreeSlot(slot);
- return SECFailure;
- }
-
- cert = PK11_FindCertFromDERCertItem(slot, &cert_der, proto_win);
- SECITEM_FreeItem(&cert_der, PR_FALSE);
- if(NULL == cert) {
- failf(data, "NSS: client certificate from file not found");
- PK11_FreeSlot(slot);
- return SECFailure;
- }
-
- key = PK11_FindPrivateKeyFromCert(slot, cert, NULL);
- PK11_FreeSlot(slot);
- if(NULL == key) {
- failf(data, "NSS: private key from file not found");
- CERT_DestroyCertificate(cert);
- return SECFailure;
- }
-
- infof(data, "NSS: client certificate from file\n");
- display_cert_info(data, cert);
-
- *pRetCert = cert;
- *pRetKey = key;
- return SECSuccess;
- }
-
- /* use the default NSS hook */
- if(SECSuccess != NSS_GetClientAuthData((void *)nickname, sock, caNames,
- pRetCert, pRetKey)
- || NULL == *pRetCert) {
-
- if(NULL == nickname)
- failf(data, "NSS: client certificate not found (nickname not "
- "specified)");
- else
- failf(data, "NSS: client certificate not found: %s", nickname);
-
- return SECFailure;
- }
-
- /* get certificate nickname if any */
- nickname = (*pRetCert)->nickname;
- if(NULL == nickname)
- nickname = "[unknown]";
-
- if(NULL == *pRetKey) {
- failf(data, "NSS: private key not found for certificate: %s", nickname);
- return SECFailure;
- }
-
- infof(data, "NSS: using client certificate: %s\n", nickname);
- display_cert_info(data, *pRetCert);
- return SECSuccess;
-}
-
-/* This function is supposed to decide, which error codes should be used
- * to conclude server is TLS intolerant.
- *
- * taken from xulrunner - nsNSSIOLayer.cpp
- */
-static PRBool
-isTLSIntoleranceError(PRInt32 err)
-{
- switch (err) {
- case SSL_ERROR_BAD_MAC_ALERT:
- case SSL_ERROR_BAD_MAC_READ:
- case SSL_ERROR_HANDSHAKE_FAILURE_ALERT:
- case SSL_ERROR_HANDSHAKE_UNEXPECTED_ALERT:
- case SSL_ERROR_CLIENT_KEY_EXCHANGE_FAILURE:
- case SSL_ERROR_ILLEGAL_PARAMETER_ALERT:
- case SSL_ERROR_NO_CYPHER_OVERLAP:
- case SSL_ERROR_BAD_SERVER:
- case SSL_ERROR_BAD_BLOCK_PADDING:
- case SSL_ERROR_UNSUPPORTED_VERSION:
- case SSL_ERROR_PROTOCOL_VERSION_ALERT:
- case SSL_ERROR_RX_MALFORMED_FINISHED:
- case SSL_ERROR_BAD_HANDSHAKE_HASH_VALUE:
- case SSL_ERROR_DECODE_ERROR_ALERT:
- case SSL_ERROR_RX_UNKNOWN_ALERT:
- return PR_TRUE;
- default:
- return PR_FALSE;
- }
-}
-
-/* update blocking direction in case of PR_WOULD_BLOCK_ERROR */
-static void nss_update_connecting_state(ssl_connect_state state, void *secret)
-{
- struct ssl_connect_data *connssl = (struct ssl_connect_data *)secret;
- if(PR_GetError() != PR_WOULD_BLOCK_ERROR)
- /* an unrelated error is passing by */
- return;
-
- switch(connssl->connecting_state) {
- case ssl_connect_2:
- case ssl_connect_2_reading:
- case ssl_connect_2_writing:
- break;
- default:
- /* we are not called from an SSL handshake */
- return;
- }
-
- /* update the state accordingly */
- connssl->connecting_state = state;
-}
-
-/* recv() wrapper we use to detect blocking direction during SSL handshake */
-static PRInt32 nspr_io_recv(PRFileDesc *fd, void *buf, PRInt32 amount,
- PRIntn flags, PRIntervalTime timeout)
-{
- const PRRecvFN recv_fn = fd->lower->methods->recv;
- const PRInt32 rv = recv_fn(fd->lower, buf, amount, flags, timeout);
- if(rv < 0)
- /* check for PR_WOULD_BLOCK_ERROR and update blocking direction */
- nss_update_connecting_state(ssl_connect_2_reading, fd->secret);
- return rv;
-}
-
-/* send() wrapper we use to detect blocking direction during SSL handshake */
-static PRInt32 nspr_io_send(PRFileDesc *fd, const void *buf, PRInt32 amount,
- PRIntn flags, PRIntervalTime timeout)
-{
- const PRSendFN send_fn = fd->lower->methods->send;
- const PRInt32 rv = send_fn(fd->lower, buf, amount, flags, timeout);
- if(rv < 0)
- /* check for PR_WOULD_BLOCK_ERROR and update blocking direction */
- nss_update_connecting_state(ssl_connect_2_writing, fd->secret);
- return rv;
-}
-
-/* close() wrapper to avoid assertion failure due to fd->secret != NULL */
-static PRStatus nspr_io_close(PRFileDesc *fd)
-{
- const PRCloseFN close_fn = PR_GetDefaultIOMethods()->close;
- fd->secret = NULL;
- return close_fn(fd);
-}
-
-static CURLcode nss_init_core(struct SessionHandle *data, const char *cert_dir)
-{
- NSSInitParameters initparams;
-
- if(nss_context != NULL)
- return CURLE_OK;
-
- memset((void *) &initparams, '\0', sizeof(initparams));
- initparams.length = sizeof(initparams);
-
- if(cert_dir) {
- char *certpath = aprintf("sql:%s", cert_dir);
- if(!certpath)
- return CURLE_OUT_OF_MEMORY;
-
- infof(data, "Initializing NSS with certpath: %s\n", certpath);
- nss_context = NSS_InitContext(certpath, "", "", "", &initparams,
- NSS_INIT_READONLY | NSS_INIT_PK11RELOAD);
- free(certpath);
-
- if(nss_context != NULL)
- return CURLE_OK;
-
- infof(data, "Unable to initialize NSS database\n");
- }
-
- infof(data, "Initializing NSS with certpath: none\n");
- nss_context = NSS_InitContext("", "", "", "", &initparams, NSS_INIT_READONLY
- | NSS_INIT_NOCERTDB | NSS_INIT_NOMODDB | NSS_INIT_FORCEOPEN
- | NSS_INIT_NOROOTINIT | NSS_INIT_OPTIMIZESPACE | NSS_INIT_PK11RELOAD);
- if(nss_context != NULL)
- return CURLE_OK;
-
- infof(data, "Unable to initialize NSS\n");
- return CURLE_SSL_CACERT_BADFILE;
-}
-
-static CURLcode nss_init(struct SessionHandle *data)
-{
- char *cert_dir;
- struct_stat st;
- CURLcode rv;
-
- if(initialized)
- return CURLE_OK;
-
- /* list of all CRL items we need to destroy in Curl_nss_cleanup() */
- nss_crl_list = Curl_llist_alloc(nss_destroy_crl_item);
- if(!nss_crl_list)
- return CURLE_OUT_OF_MEMORY;
-
- /* First we check if $SSL_DIR points to a valid dir */
- cert_dir = getenv("SSL_DIR");
- if(cert_dir) {
- if((stat(cert_dir, &st) != 0) ||
- (!S_ISDIR(st.st_mode))) {
- cert_dir = NULL;
- }
- }
-
- /* Now we check if the default location is a valid dir */
- if(!cert_dir) {
- if((stat(SSL_DIR, &st) == 0) &&
- (S_ISDIR(st.st_mode))) {
- cert_dir = (char *)SSL_DIR;
- }
- }
-
- if(nspr_io_identity == PR_INVALID_IO_LAYER) {
- /* allocate an identity for our own NSPR I/O layer */
- nspr_io_identity = PR_GetUniqueIdentity("libcurl");
- if(nspr_io_identity == PR_INVALID_IO_LAYER)
- return CURLE_OUT_OF_MEMORY;
-
- /* the default methods just call down to the lower I/O layer */
- memcpy(&nspr_io_methods, PR_GetDefaultIOMethods(), sizeof nspr_io_methods);
-
- /* override certain methods in the table by our wrappers */
- nspr_io_methods.recv = nspr_io_recv;
- nspr_io_methods.send = nspr_io_send;
- nspr_io_methods.close = nspr_io_close;
- }
-
- rv = nss_init_core(data, cert_dir);
- if(rv)
- return rv;
-
- if(num_enabled_ciphers() == 0)
- NSS_SetDomesticPolicy();
-
- initialized = 1;
- return CURLE_OK;
-}
-
-/**
- * Global SSL init
- *
- * @retval 0 error initializing SSL
- * @retval 1 SSL initialized successfully
- */
-int Curl_nss_init(void)
-{
- /* curl_global_init() is not thread-safe so this test is ok */
- if(nss_initlock == NULL) {
- PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 256);
- nss_initlock = PR_NewLock();
- nss_crllock = PR_NewLock();
- }
-
- /* We will actually initialize NSS later */
-
- return 1;
-}
-
-CURLcode Curl_nss_force_init(struct SessionHandle *data)
-{
- CURLcode rv;
- if(!nss_initlock) {
- failf(data,
- "unable to initialize NSS, curl_global_init() should have been "
- "called with CURL_GLOBAL_SSL or CURL_GLOBAL_ALL");
- return CURLE_FAILED_INIT;
- }
-
- PR_Lock(nss_initlock);
- rv = nss_init(data);
- PR_Unlock(nss_initlock);
- return rv;
-}
-
-/* Global cleanup */
-void Curl_nss_cleanup(void)
-{
- /* This function isn't required to be threadsafe and this is only done
- * as a safety feature.
- */
- PR_Lock(nss_initlock);
- if(initialized) {
- /* Free references to client certificates held in the SSL session cache.
- * Omitting this hampers destruction of the security module owning
- * the certificates. */
- SSL_ClearSessionCache();
-
- if(mod && SECSuccess == SECMOD_UnloadUserModule(mod)) {
- SECMOD_DestroyModule(mod);
- mod = NULL;
- }
- NSS_ShutdownContext(nss_context);
- nss_context = NULL;
- }
-
- /* destroy all CRL items */
- Curl_llist_destroy(nss_crl_list, NULL);
- nss_crl_list = NULL;
-
- PR_Unlock(nss_initlock);
-
- PR_DestroyLock(nss_initlock);
- PR_DestroyLock(nss_crllock);
- nss_initlock = NULL;
-
- initialized = 0;
-}
-
-/*
- * This function uses SSL_peek to determine connection status.
- *
- * Return codes:
- * 1 means the connection is still in place
- * 0 means the connection has been closed
- * -1 means the connection status is unknown
- */
-int
-Curl_nss_check_cxn(struct connectdata *conn)
-{
- int rc;
- char buf;
-
- rc =
- PR_Recv(conn->ssl[FIRSTSOCKET].handle, (void *)&buf, 1, PR_MSG_PEEK,
- PR_SecondsToInterval(1));
- if(rc > 0)
- return 1; /* connection still in place */
-
- if(rc == 0)
- return 0; /* connection has been closed */
-
- return -1; /* connection status unknown */
-}
-
-/*
- * This function is called when an SSL connection is closed.
- */
-void Curl_nss_close(struct connectdata *conn, int sockindex)
-{
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-
- if(connssl->handle) {
- /* NSS closes the socket we previously handed to it, so we must mark it
- as closed to avoid double close */
- fake_sclose(conn->sock[sockindex]);
- conn->sock[sockindex] = CURL_SOCKET_BAD;
-
- if((connssl->client_nickname != NULL) || (connssl->obj_clicert != NULL))
- /* A server might require different authentication based on the
- * particular path being requested by the client. To support this
- * scenario, we must ensure that a connection will never reuse the
- * authentication data from a previous connection. */
- SSL_InvalidateSession(connssl->handle);
-
- if(connssl->client_nickname != NULL) {
- free(connssl->client_nickname);
- connssl->client_nickname = NULL;
- }
- /* destroy all NSS objects in order to avoid failure of NSS shutdown */
- Curl_llist_destroy(connssl->obj_list, NULL);
- connssl->obj_list = NULL;
- connssl->obj_clicert = NULL;
-
- PR_Close(connssl->handle);
- connssl->handle = NULL;
- }
-}
-
-/*
- * This function is called when the 'data' struct is going away. Close
- * down everything and free all resources!
- */
-int Curl_nss_close_all(struct SessionHandle *data)
-{
- (void)data;
- return 0;
-}
-
-/* return true if NSS can provide error code (and possibly msg) for the
- error */
-static bool is_nss_error(CURLcode err)
-{
- switch(err) {
- case CURLE_PEER_FAILED_VERIFICATION:
- case CURLE_SSL_CACERT:
- case CURLE_SSL_CERTPROBLEM:
- case CURLE_SSL_CONNECT_ERROR:
- case CURLE_SSL_ISSUER_ERROR:
- return true;
-
- default:
- return false;
- }
-}
-
-/* return true if the given error code is related to a client certificate */
-static bool is_cc_error(PRInt32 err)
-{
- switch(err) {
- case SSL_ERROR_BAD_CERT_ALERT:
- case SSL_ERROR_EXPIRED_CERT_ALERT:
- case SSL_ERROR_REVOKED_CERT_ALERT:
- return true;
-
- default:
- return false;
- }
-}
-
-static Curl_recv nss_recv;
-static Curl_send nss_send;
-
-static CURLcode nss_load_ca_certificates(struct connectdata *conn,
- int sockindex)
-{
- struct SessionHandle *data = conn->data;
- const char *cafile = data->set.ssl.CAfile;
- const char *capath = data->set.ssl.CApath;
-
- if(cafile) {
- CURLcode rv = nss_load_cert(&conn->ssl[sockindex], cafile, PR_TRUE);
- if(CURLE_OK != rv)
- return rv;
- }
-
- if(capath) {
- struct_stat st;
- if(stat(capath, &st) == -1)
- return CURLE_SSL_CACERT_BADFILE;
-
- if(S_ISDIR(st.st_mode)) {
- PRDirEntry *entry;
- PRDir *dir = PR_OpenDir(capath);
- if(!dir)
- return CURLE_SSL_CACERT_BADFILE;
-
- while((entry = PR_ReadDir(dir, PR_SKIP_BOTH | PR_SKIP_HIDDEN))) {
- char *fullpath = aprintf("%s/%s", capath, entry->name);
- if(!fullpath) {
- PR_CloseDir(dir);
- return CURLE_OUT_OF_MEMORY;
- }
-
- if(CURLE_OK != nss_load_cert(&conn->ssl[sockindex], fullpath, PR_TRUE))
- /* This is purposefully tolerant of errors so non-PEM files can
- * be in the same directory */
- infof(data, "failed to load '%s' from CURLOPT_CAPATH\n", fullpath);
-
- free(fullpath);
- }
-
- PR_CloseDir(dir);
- }
- else
- infof(data, "warning: CURLOPT_CAPATH not a directory (%s)\n", capath);
- }
-
- infof(data, " CAfile: %s\n CApath: %s\n",
- cafile ? cafile : "none",
- capath ? capath : "none");
-
- return CURLE_OK;
-}
-
-static CURLcode nss_init_sslver(SSLVersionRange *sslver,
- struct SessionHandle *data)
-{
- switch (data->set.ssl.version) {
- default:
- case CURL_SSLVERSION_DEFAULT:
- sslver->min = SSL_LIBRARY_VERSION_3_0;
- if(data->state.ssl_connect_retry) {
- infof(data, "TLS disabled due to previous handshake failure\n");
- sslver->max = SSL_LIBRARY_VERSION_3_0;
- return CURLE_OK;
- }
- /* intentional fall-through to default to highest TLS version if possible */
-
- case CURL_SSLVERSION_TLSv1:
-#ifdef SSL_LIBRARY_VERSION_TLS_1_2
- sslver->max = SSL_LIBRARY_VERSION_TLS_1_2;
-#elif defined SSL_LIBRARY_VERSION_TLS_1_1
- sslver->max = SSL_LIBRARY_VERSION_TLS_1_1;
-#else
- sslver->max = SSL_LIBRARY_VERSION_TLS_1_0;
-#endif
- return CURLE_OK;
-
- case CURL_SSLVERSION_SSLv2:
- sslver->min = SSL_LIBRARY_VERSION_2;
- sslver->max = SSL_LIBRARY_VERSION_2;
- return CURLE_OK;
-
- case CURL_SSLVERSION_SSLv3:
- sslver->min = SSL_LIBRARY_VERSION_3_0;
- sslver->max = SSL_LIBRARY_VERSION_3_0;
- return CURLE_OK;
-
- case CURL_SSLVERSION_TLSv1_0:
- sslver->min = SSL_LIBRARY_VERSION_TLS_1_0;
- sslver->max = SSL_LIBRARY_VERSION_TLS_1_0;
- return CURLE_OK;
-
- case CURL_SSLVERSION_TLSv1_1:
-#ifdef SSL_LIBRARY_VERSION_TLS_1_1
- sslver->min = SSL_LIBRARY_VERSION_TLS_1_1;
- sslver->max = SSL_LIBRARY_VERSION_TLS_1_1;
- return CURLE_OK;
-#endif
- break;
-
- case CURL_SSLVERSION_TLSv1_2:
-#ifdef SSL_LIBRARY_VERSION_TLS_1_2
- sslver->min = SSL_LIBRARY_VERSION_TLS_1_2;
- sslver->max = SSL_LIBRARY_VERSION_TLS_1_2;
- return CURLE_OK;
-#endif
- break;
- }
-
- failf(data, "TLS minor version cannot be set");
- return CURLE_SSL_CONNECT_ERROR;
-}
-
-static CURLcode nss_fail_connect(struct ssl_connect_data *connssl,
- struct SessionHandle *data,
- CURLcode curlerr)
-{
- SSLVersionRange sslver;
- PRErrorCode err = 0;
-
- /* 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);
- }
-
- /* cleanup on connection failure */
- Curl_llist_destroy(connssl->obj_list, NULL);
- connssl->obj_list = NULL;
-
- if(connssl->handle
- && (SSL_VersionRangeGet(connssl->handle, &sslver) == SECSuccess)
- && (sslver.min == SSL_LIBRARY_VERSION_3_0)
- && (sslver.max != SSL_LIBRARY_VERSION_3_0)
- && 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;
-}
-
-/* Switch the SSL socket into non-blocking mode. */
-static CURLcode nss_set_nonblock(struct ssl_connect_data *connssl,
- struct SessionHandle *data)
-{
- static PRSocketOptionData sock_opt;
- sock_opt.option = PR_SockOpt_Nonblocking;
- sock_opt.value.non_blocking = PR_TRUE;
-
- if(PR_SetSocketOption(connssl->handle, &sock_opt) != PR_SUCCESS)
- return nss_fail_connect(connssl, data, CURLE_SSL_CONNECT_ERROR);
-
- return CURLE_OK;
-}
-
-static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
-{
- PRFileDesc *model = NULL;
- PRFileDesc *nspr_io = NULL;
- PRFileDesc *nspr_io_stub = NULL;
- 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;
-
- SSLVersionRange sslver = {
- SSL_LIBRARY_VERSION_TLS_1_0, /* min */
- SSL_LIBRARY_VERSION_TLS_1_0 /* max */
- };
-
-#ifdef USE_NGHTTP2
-#if defined(SSL_ENABLE_NPN) || defined(SSL_ENABLE_ALPN)
- unsigned int alpn_protos_len = NGHTTP2_PROTO_VERSION_ID_LEN +
- ALPN_HTTP_1_1_LENGTH + 2;
- unsigned char alpn_protos[NGHTTP2_PROTO_VERSION_ID_LEN + ALPN_HTTP_1_1_LENGTH
- + 2];
- int cur = 0;
-#endif
-#endif
-
-
- 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);
-
- 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 disabled or we are not going to verify peer */
- ssl_no_cache = (conn->ssl_config.sessionid && data->set.ssl.verifypeer) ?
- PR_FALSE : PR_TRUE;
- if(SSL_OptionSet(model, SSL_NO_CACHE, ssl_no_cache) != SECSuccess)
- goto error;
-
- /* enable/disable the requested SSL version(s) */
- if(nss_init_sslver(&sslver, data) != CURLE_OK)
- goto error;
- if(SSL_VersionRangeSet(model, &sslver) != 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;
-
- 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, conn) != 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) {
- const CURLcode rv = nss_load_crl(data->set.ssl.CRLfile);
- if(CURLE_OK != rv) {
- curlerr = rv;
- goto error;
- }
- infof(data, " CRLfile: %s\n", data->set.ssl.CRLfile);
- }
-
- 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;
- }
-
- /* wrap OS file descriptor by NSPR's file descriptor abstraction */
- nspr_io = PR_ImportTCPSocket(sockfd);
- if(!nspr_io)
- goto error;
-
- /* create our own NSPR I/O layer */
- nspr_io_stub = PR_CreateIOLayerStub(nspr_io_identity, &nspr_io_methods);
- if(!nspr_io_stub) {
- PR_Close(nspr_io);
- goto error;
- }
-
- /* make the per-connection data accessible from NSPR I/O callbacks */
- nspr_io_stub->secret = (void *)connssl;
-
- /* push our new layer to the NSPR I/O stack */
- if(PR_PushIOLayer(nspr_io, PR_TOP_IO_LAYER, nspr_io_stub) != PR_SUCCESS) {
- PR_Close(nspr_io);
- PR_Close(nspr_io_stub);
- goto error;
- }
-
- /* import our model socket onto the current I/O stack */
- connssl->handle = SSL_ImportFD(model, nspr_io);
- if(!connssl->handle) {
- PR_Close(nspr_io);
- 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]);
- }
-
-#ifdef USE_NGHTTP2
- if(data->set.httpversion == CURL_HTTP_VERSION_2_0) {
-#ifdef SSL_ENABLE_NPN
- if(data->set.ssl_enable_npn) {
- if(SSL_OptionSet(connssl->handle, SSL_ENABLE_NPN, PR_TRUE) != SECSuccess)
- goto error;
- }
-#endif
-
-#ifdef SSL_ENABLE_ALPN
- if(data->set.ssl_enable_alpn) {
- if(SSL_OptionSet(connssl->handle, SSL_ENABLE_ALPN, PR_TRUE)
- != SECSuccess)
- goto error;
- }
-#endif
-
-#if defined(SSL_ENABLE_NPN) || defined(SSL_ENABLE_ALPN)
- if(data->set.ssl_enable_npn || data->set.ssl_enable_alpn) {
- alpn_protos[cur] = NGHTTP2_PROTO_VERSION_ID_LEN;
- cur++;
- memcpy(&alpn_protos[cur], NGHTTP2_PROTO_VERSION_ID,
- NGHTTP2_PROTO_VERSION_ID_LEN);
- cur += NGHTTP2_PROTO_VERSION_ID_LEN;
- alpn_protos[cur] = ALPN_HTTP_1_1_LENGTH;
- cur++;
- memcpy(&alpn_protos[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
-
- if(SSL_SetNextProtoNego(connssl->handle, alpn_protos, alpn_protos_len)
- != SECSuccess)
- goto error;
- }
- else {
- infof(data, "SSL, can't negotiate HTTP/2.0 with neither NPN nor ALPN\n");
- }
-#endif
- }
-#endif
-
-
- /* Force handshake on next I/O */
- SSL_ResetHandshake(connssl->handle, /* asServer */ PR_FALSE);
-
- SSL_SetURL(connssl->handle, conn->host.name);
-
- return CURLE_OK;
-
-error:
- if(model)
- PR_Close(model);
-
- return nss_fail_connect(connssl, data, curlerr);
-}
-
-static CURLcode nss_do_connect(struct connectdata *conn, int sockindex)
-{
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- struct SessionHandle *data = conn->data;
- CURLcode curlerr = CURLE_SSL_CONNECT_ERROR;
- PRUint32 timeout;
-
- /* check timeout situation */
- const long time_left = Curl_timeleft(data, NULL, TRUE);
- if(time_left < 0L) {
- failf(data, "timed out before SSL handshake");
- curlerr = CURLE_OPERATION_TIMEDOUT;
- goto error;
- }
-
- /* Force the handshake now */
- timeout = PR_MillisecondsToInterval((PRUint32) time_left);
- if(SSL_ForceHandshakeWithTimeout(connssl->handle, timeout) != SECSuccess) {
- if(PR_GetError() == PR_WOULD_BLOCK_ERROR)
- /* blocking direction is updated by nss_update_connecting_state() */
- return CURLE_AGAIN;
- else 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:
- return nss_fail_connect(connssl, data, curlerr);
-}
-
-static CURLcode nss_connect_common(struct connectdata *conn, int sockindex,
- bool *done)
-{
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- struct SessionHandle *data = conn->data;
- const bool blocking = (done == NULL);
- CURLcode rv;
-
- if(connssl->connecting_state == ssl_connect_1) {
- rv = nss_setup_connect(conn, sockindex);
- if(rv)
- /* we do not expect CURLE_AGAIN from nss_setup_connect() */
- return rv;
-
- if(!blocking) {
- /* in non-blocking mode, set NSS non-blocking mode before handshake */
- rv = nss_set_nonblock(connssl, data);
- if(rv)
- return rv;
- }
-
- connssl->connecting_state = ssl_connect_2;
- }
-
- rv = nss_do_connect(conn, sockindex);
- switch(rv) {
- case CURLE_OK:
- break;
- case CURLE_AGAIN:
- if(!blocking)
- /* CURLE_AGAIN in non-blocking mode is not an error */
- return CURLE_OK;
- /* fall through */
- default:
- return rv;
- }
-
- if(blocking) {
- /* in blocking mode, set NSS non-blocking mode _after_ SSL handshake */
- rv = nss_set_nonblock(connssl, data);
- if(rv)
- return rv;
- }
- else
- /* signal completed SSL handshake */
- *done = TRUE;
-
- connssl->connecting_state = ssl_connect_done;
- return CURLE_OK;
-}
-
-CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
-{
- return nss_connect_common(conn, sockindex, /* blocking */ NULL);
-}
-
-CURLcode Curl_nss_connect_nonblocking(struct connectdata *conn,
- int sockindex, bool *done)
-{
- return nss_connect_common(conn, sockindex, done);
-}
-
-static ssize_t nss_send(struct connectdata *conn, /* connection data */
- int sockindex, /* socketindex */
- const void *mem, /* send this data */
- size_t len, /* amount to write */
- CURLcode *curlcode)
-{
- ssize_t rc = PR_Send(conn->ssl[sockindex].handle, mem, (int)len, 0,
- PR_INTERVAL_NO_WAIT);
- if(rc < 0) {
- PRInt32 err = PR_GetError();
- if(err == PR_WOULD_BLOCK_ERROR)
- *curlcode = CURLE_AGAIN;
- else {
- /* print the error number and error string */
- const char *err_name = nss_error_to_name(err);
- infof(conn->data, "SSL write: error %d (%s)\n", err, err_name);
-
- /* print a human-readable message describing the error if available */
- nss_print_error_message(conn->data, err);
-
- *curlcode = (is_cc_error(err))
- ? CURLE_SSL_CERTPROBLEM
- : CURLE_SEND_ERROR;
- }
- return -1;
- }
- return rc; /* number of bytes */
-}
-
-static ssize_t nss_recv(struct connectdata * conn, /* connection data */
- int num, /* socketindex */
- char *buf, /* store read data here */
- size_t buffersize, /* max amount to read */
- CURLcode *curlcode)
-{
- ssize_t nread = PR_Recv(conn->ssl[num].handle, buf, (int)buffersize, 0,
- PR_INTERVAL_NO_WAIT);
- if(nread < 0) {
- /* failed SSL read */
- PRInt32 err = PR_GetError();
-
- if(err == PR_WOULD_BLOCK_ERROR)
- *curlcode = CURLE_AGAIN;
- else {
- /* print the error number and error string */
- const char *err_name = nss_error_to_name(err);
- infof(conn->data, "SSL read: errno %d (%s)\n", err, err_name);
-
- /* print a human-readable message describing the error if available */
- nss_print_error_message(conn->data, err);
-
- *curlcode = (is_cc_error(err))
- ? CURLE_SSL_CERTPROBLEM
- : CURLE_RECV_ERROR;
- }
- return -1;
- }
- return nread;
-}
-
-size_t Curl_nss_version(char *buffer, size_t size)
-{
- return snprintf(buffer, size, "NSS/%s", NSS_VERSION);
-}
-
-int Curl_nss_seed(struct SessionHandle *data)
-{
- /* make sure that NSS is initialized */
- return !!Curl_nss_force_init(data);
-}
-
-/* data might be NULL */
-int Curl_nss_random(struct SessionHandle *data,
- unsigned char *entropy,
- size_t length)
-{
- if(data)
- Curl_nss_seed(data); /* Initiate the seed if not already done */
- if(SECSuccess != PK11_GenerateRandom(entropy, curlx_uztosi(length))) {
- /* no way to signal a failure from here, we have to abort */
- failf(data, "PK11_GenerateRandom() failed, calling abort()...");
- abort();
- }
- return 0;
-}
-
-void Curl_nss_md5sum(unsigned char *tmp, /* input */
- size_t tmplen,
- unsigned char *md5sum, /* output */
- size_t md5len)
-{
- PK11Context *MD5pw = PK11_CreateDigestContext(SEC_OID_MD5);
- unsigned int MD5out;
- PK11_DigestOp(MD5pw, tmp, curlx_uztoui(tmplen));
- PK11_DigestFinal(MD5pw, md5sum, &MD5out, curlx_uztoui(md5len));
- PK11_DestroyContext(MD5pw, PR_TRUE);
-}
-
-#endif /* USE_NSS */