#include "cryptlib.h"
#include <openssl/dso.h>
#include <openssl/engine.h>
+#include <openssl/ui.h>
#ifndef OPENSSL_NO_HW
#ifndef OPENSSL_NO_HW_NCIPHER
/* KM stuff */
static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id,
- pem_password_cb *callback, void *callback_data);
+ UI_METHOD *ui_method, void *callback_data);
static EVP_PKEY *hwcrhk_load_pubkey(ENGINE *eng, const char *key_id,
- pem_password_cb *callback, void *callback_data);
+ UI_METHOD *ui_method, void *callback_data);
static void hwcrhk_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
int ind,long argl, void *argp);
/* Interaction stuff */
+static int hwcrhk_insert_card(const char *prompt_info,
+ const char *wrong_info,
+ HWCryptoHook_PassphraseContext *ppctx,
+ HWCryptoHook_CallerContext *cactx);
static int hwcrhk_get_pass(const char *prompt_info,
int *len_io, char *buf,
HWCryptoHook_PassphraseContext *ppctx,
#define HWCRHK_CMD_SO_PATH ENGINE_CMD_BASE
#define HWCRHK_CMD_FORK_CHECK (ENGINE_CMD_BASE + 1)
#define HWCRHK_CMD_THREAD_LOCKING (ENGINE_CMD_BASE + 2)
+#define HWCRHK_CMD_SET_USER_INTERFACE (ENGINE_CMD_BASE + 3)
+#define HWCRHK_CMD_SET_CALLBACK_DATA (ENGINE_CMD_BASE + 4)
static const ENGINE_CMD_DEFN hwcrhk_cmd_defns[] = {
{HWCRHK_CMD_SO_PATH,
"SO_PATH",
"THREAD_LOCKING",
"Turns thread-safe locking on or off (boolean)",
ENGINE_CMD_FLAG_NUMERIC},
+ {HWCRHK_CMD_SET_USER_INTERFACE,
+ "SET_USER_INTERFACE",
+ "Set the global user interface (internal)",
+ ENGINE_CMD_FLAG_INTERNAL},
+ {HWCRHK_CMD_SET_CALLBACK_DATA,
+ "SET_CALLBACK_DATA",
+ "Set the global user interface extra data (internal)",
+ ENGINE_CMD_FLAG_INTERNAL},
{0, NULL, NULL, 0}
};
into HWCryptoHook_PassphraseContext */
struct HWCryptoHook_PassphraseContextValue
{
- pem_password_cb *password_callback; /* If != NULL, will be called */
+ UI_METHOD *ui_method;
void *callback_data;
};
into HWCryptoHook_CallerContext */
struct HWCryptoHook_CallerContextValue
{
- void *any;
+ pem_password_cb *password_callback; /* Deprecated! Only present for
+ backward compatibility! */
+ UI_METHOD *ui_method;
+ void *callback_data;
};
/* The MPI structure in HWCryptoHook is pretty compatible with OpenSSL
#define MPI2BN(bn, mp) \
{mp.size = bn->dmax * sizeof(BN_ULONG); mp.buf = (unsigned char *)bn->d;}
-#if 0 /* Card and password management is not yet supported */
-/* HWCryptoHook callbacks. insert_card() and get_pass() are not yet
- defined, because we haven't quite decided on the proper form yet.
- log_message() just adds an entry in the error stack. I don't know
- if that's good or bad... */
-static int insert_card(const char *prompt_info,
- const char *wrong_info,
- HWCryptoHook_PassphraseContext *ppctx,
- HWCryptoHook_CallerContext *cactx);
-static int get_pass(const char *prompt_info,
- int *len_io, char *buf,
- HWCryptoHook_PassphraseContext *ppctx,
- HWCryptoHook_CallerContext *cactx);
-#endif
-
static BIO *logstream = NULL;
-static pem_password_cb *password_callback = NULL;
-#if 0
-static void *password_callback_userdata = NULL;
-#endif
static int disable_mutex_callbacks = 0;
+/* One might wonder why these are needed, since one can pass down at least
+ a UI_METHOD and a pointer to callback data to the key-loading functions.
+ The thing is that the ModExp and RSAImmed functions can load keys as well,
+ if the data they get is in a special, nCipher-defined format (hint: if you
+ look at the private exponent of the RSA data as a string, you'll see this
+ string: "nCipher KM tool key id", followed by some bytes, followed a key
+ identity string, followed by more bytes. This happens when you use "embed"
+ keys instead of "hwcrhk" keys). Unfortunately, those functions do not take
+ any passphrase or caller context, and our functions can't really take any
+ callback data either. Still, the "insert_card" and "get_passphrase"
+ callbacks may be called down the line, and will need to know what user
+ interface callbacks to call, and having callback data from the application
+ may be a nice thing as well, so we need to keep track of that globally. */
+static HWCryptoHook_CallerContext password_context = { NULL, NULL, NULL };
+
/* Stuff to pass to the HWCryptoHook library */
static HWCryptoHook_InitInfo hwcrhk_globals = {
0, /* Flags */
0, /* hwcrhk_cv_destroy, */
hwcrhk_get_pass, /* pass phrase */
- 0, /* insert_card, */ /* insert a card */
+ hwcrhk_insert_card, /* insert a card */
hwcrhk_log_message /* Log message */
};
* called, the checking and error handling is probably down there. */
/* utility function to obtain a context */
-static int get_context(HWCryptoHook_ContextHandle *hac)
+static int get_context(HWCryptoHook_ContextHandle *hac,
+ HWCryptoHook_CallerContext *cac)
{
char tempbuf[1024];
HWCryptoHook_ErrMsgBuf rmsg;
rmsg.size = 1024;
*hac = p_hwcrhk_Init(&hwcrhk_globals, sizeof(hwcrhk_globals), &rmsg,
- NULL);
+ cac);
if (!*hac)
return 0;
return 1;
/* Try and get a context - if not, we may have a DSO but no
* accelerator! */
- if(!get_context(&hwcrhk_context))
+ if(!get_context(&hwcrhk_context, &password_context))
{
ENGINEerr(ENGINE_F_HWCRHK_INIT,ENGINE_R_UNIT_FAILURE);
goto err;
break;
case ENGINE_CTRL_SET_PASSWORD_CALLBACK:
CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
- password_callback = (pem_password_cb *)f;
+ password_context.password_callback = (pem_password_cb *)f;
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ case ENGINE_CTRL_SET_USER_INTERFACE:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ password_context.ui_method = (UI_METHOD *)p;
+ CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+ break;
+ case ENGINE_CTRL_SET_CALLBACK_DATA:
+ CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+ password_context.callback_data = p;
CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
break;
/* this enables or disables the "SimpleForkCheck" flag used in the
}
static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id,
- pem_password_cb *callback, void *callback_data)
+ UI_METHOD *ui_method, void *callback_data)
{
#ifndef OPENSSL_NO_RSA
RSA *rtmp = NULL;
ERR_R_MALLOC_FAILURE);
goto err;
}
- ppctx.password_callback = callback;
+ ppctx.ui_method = ui_method;
ppctx.callback_data = callback_data;
if (p_hwcrhk_RSALoadKey(hwcrhk_context, key_id, hptr,
&rmsg, &ppctx))
}
static EVP_PKEY *hwcrhk_load_pubkey(ENGINE *eng, const char *key_id,
- pem_password_cb *callback, void *callback_data)
+ UI_METHOD *ui_method, void *callback_data)
{
EVP_PKEY *res = NULL;
#ifndef OPENSSL_NO_RSA
- res = hwcrhk_load_privkey(eng, key_id, callback, callback_data);
+ res = hwcrhk_load_privkey(eng, key_id,
+ ui_method, callback_data);
#endif
if (res)
HWCryptoHook_PassphraseContext *ppctx,
HWCryptoHook_CallerContext *cactx)
{
- pem_password_cb *callback = password_callback;
+ pem_password_cb *callback = NULL;
void *callback_data = NULL;
+ UI_METHOD *ui_method = NULL;
+ if (cactx)
+ {
+ if (cactx->ui_method)
+ ui_method = cactx->ui_method;
+ if (cactx->password_callback)
+ callback = cactx->password_callback;
+ if (cactx->callback_data)
+ callback_data = cactx->callback_data;
+ }
if (ppctx)
{
- if (ppctx->password_callback)
- callback = ppctx->password_callback;
+ if (ppctx->ui_method)
+ {
+ ui_method = ppctx->ui_method;
+ callback = NULL;
+ }
if (ppctx->callback_data)
callback_data = ppctx->callback_data;
}
- if (callback == NULL)
+ if (callback == NULL && ui_method == NULL)
{
ENGINEerr(ENGINE_F_HWCRHK_GET_PASS,ENGINE_R_NO_CALLBACK);
return -1;
}
- *len_io = callback(buf, *len_io, 0, callback_data);
+ if (ui_method)
+ {
+ UI *ui = UI_new_method(ui_method);
+ if (ui)
+ {
+ int ok;
+ char *prompt = UI_construct_prompt(ui,
+ "pass phrase", prompt_info);
+
+ ok = UI_add_input_string(ui,prompt,
+ UI_INPUT_FLAG_DEFAULT_PWD,
+ buf,0,(*len_io) - 1);
+ UI_add_user_data(ui, callback_data);
+ if (ok >= 0)
+ ok=UI_process(ui);
+ if (ok >= 0)
+ *len_io = strlen(buf);
+
+ OPENSSL_free(prompt);
+ UI_free(ui);
+ }
+ }
+ else
+ {
+ *len_io = callback(buf, *len_io, 0, callback_data);
+ }
if(!*len_io)
return -1;
return 0;
}
+static int hwcrhk_insert_card(const char *prompt_info,
+ const char *wrong_info,
+ HWCryptoHook_PassphraseContext *ppctx,
+ HWCryptoHook_CallerContext *cactx)
+ {
+ int ok = -1;
+ UI *ui;
+ void *callback_data = NULL;
+ UI_METHOD *ui_method = NULL;
+
+ if (cactx)
+ {
+ if (cactx->ui_method)
+ ui_method = cactx->ui_method;
+ if (cactx->callback_data)
+ callback_data = cactx->callback_data;
+ }
+ if (ppctx)
+ {
+ if (ppctx->ui_method)
+ ui_method = ppctx->ui_method;
+ if (ppctx->callback_data)
+ callback_data = ppctx->callback_data;
+ }
+ if (ui_method == NULL)
+ {
+ ENGINEerr(ENGINE_F_HWCRHK_INSERT_CARD,ENGINE_R_NO_CALLBACK);
+ return -1;
+ }
+
+ ui = UI_new_method(ui_method);
+
+ if (ui)
+ {
+ char answer[10];
+ char buf[BUFSIZ];
+
+ if (wrong_info)
+ BIO_snprintf(buf, sizeof(buf)-1,
+ "Current card: \"%s\"\n", wrong_info);
+ ok = UI_dup_info_string(ui, buf);
+ if (ok && prompt_info)
+ {
+ BIO_snprintf(buf, sizeof(buf)-1,
+ "Insert card \"%s\"\n then hit <enter> or C<enter> to cancel\n", prompt_info);
+ ok = UI_dup_input_string(ui, buf, 1,
+ answer, 0, sizeof(answer)-1);
+ }
+ UI_add_user_data(ui, callback_data);
+ if (ok)
+ ok = UI_process(ui);
+ UI_free(ui);
+ /* If canceled input treat as 'cancel' */
+ if (ok == -2)
+ ok = 1;
+ else if(ok != 0)
+ ok = -1;
+ else if (answer[0] == 'c' || answer[0] == 'C')
+ ok = 1;
+ else
+ ok = 0;
+ }
+ return ok;
+ }
+
static void hwcrhk_log_message(void *logstr, const char *message)
{
BIO *lstream = NULL;
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