diff options
Diffstat (limited to 'openssl/engines/e_chil.c')
| -rw-r--r-- | openssl/engines/e_chil.c | 1368 |
1 files changed, 1368 insertions, 0 deletions
diff --git a/openssl/engines/e_chil.c b/openssl/engines/e_chil.c new file mode 100644 index 000000000..e1847622e --- /dev/null +++ b/openssl/engines/e_chil.c @@ -0,0 +1,1368 @@ +/* crypto/engine/e_chil.c -*- mode: C; c-file-style: "eay" -*- */ +/* Written by Richard Levitte (richard@levitte.org), Geoff Thorpe + * (geoff@geoffthorpe.net) and Dr Stephen N Henson (steve@openssl.org) + * for the OpenSSL project 2000. + */ +/* ==================================================================== + * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include <string.h> +#include <openssl/crypto.h> +#include <openssl/pem.h> +#include <openssl/dso.h> +#include <openssl/engine.h> +#include <openssl/ui.h> +#include <openssl/rand.h> +#ifndef OPENSSL_NO_RSA +#include <openssl/rsa.h> +#endif +#ifndef OPENSSL_NO_DH +#include <openssl/dh.h> +#endif +#include <openssl/bn.h> + +#ifndef OPENSSL_NO_HW +#ifndef OPENSSL_NO_HW_CHIL + +/* Attribution notice: nCipher have said several times that it's OK for + * us to implement a general interface to their boxes, and recently declared + * their HWCryptoHook to be public, and therefore available for us to use. + * Thanks, nCipher. + * + * The hwcryptohook.h included here is from May 2000. + * [Richard Levitte] + */ +#ifdef FLAT_INC +#include "hwcryptohook.h" +#else +#include "vendor_defns/hwcryptohook.h" +#endif + +#define HWCRHK_LIB_NAME "CHIL engine" +#include "e_chil_err.c" + +static int hwcrhk_destroy(ENGINE *e); +static int hwcrhk_init(ENGINE *e); +static int hwcrhk_finish(ENGINE *e); +static int hwcrhk_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void)); + +/* Functions to handle mutexes */ +static int hwcrhk_mutex_init(HWCryptoHook_Mutex*, HWCryptoHook_CallerContext*); +static int hwcrhk_mutex_lock(HWCryptoHook_Mutex*); +static void hwcrhk_mutex_unlock(HWCryptoHook_Mutex*); +static void hwcrhk_mutex_destroy(HWCryptoHook_Mutex*); + +/* BIGNUM stuff */ +static int hwcrhk_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx); + +#ifndef OPENSSL_NO_RSA +/* RSA stuff */ +static int hwcrhk_rsa_mod_exp(BIGNUM *r, const BIGNUM *I, RSA *rsa, BN_CTX *ctx); +#endif +#ifndef OPENSSL_NO_RSA +/* This function is aliased to mod_exp (with the mont stuff dropped). */ +static int hwcrhk_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); +#endif + +#ifndef OPENSSL_NO_DH +/* DH stuff */ +/* This function is alised to mod_exp (with the DH and mont dropped). */ +static int hwcrhk_mod_exp_dh(const DH *dh, BIGNUM *r, + const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); +#endif + +/* RAND stuff */ +static int hwcrhk_rand_bytes(unsigned char *buf, int num); +static int hwcrhk_rand_status(void); + +/* KM stuff */ +static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id, + UI_METHOD *ui_method, void *callback_data); +static EVP_PKEY *hwcrhk_load_pubkey(ENGINE *eng, const char *key_id, + UI_METHOD *ui_method, void *callback_data); +#ifndef OPENSSL_NO_RSA +static void hwcrhk_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad, + int ind,long argl, void *argp); +#endif + +/* 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, + HWCryptoHook_CallerContext *cactx); +static void hwcrhk_log_message(void *logstr, const char *message); + +/* The definitions for control commands specific to this engine */ +#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", + "Specifies the path to the 'hwcrhk' shared library", + ENGINE_CMD_FLAG_STRING}, + {HWCRHK_CMD_FORK_CHECK, + "FORK_CHECK", + "Turns fork() checking on (non-zero) or off (zero)", + ENGINE_CMD_FLAG_NUMERIC}, + {HWCRHK_CMD_THREAD_LOCKING, + "THREAD_LOCKING", + "Turns thread-safe locking on (zero) or off (non-zero)", + 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} + }; + +#ifndef OPENSSL_NO_RSA +/* Our internal RSA_METHOD that we provide pointers to */ +static RSA_METHOD hwcrhk_rsa = + { + "CHIL RSA method", + NULL, + NULL, + NULL, + NULL, + hwcrhk_rsa_mod_exp, + hwcrhk_mod_exp_mont, + NULL, + NULL, + 0, + NULL, + NULL, + NULL, + NULL + }; +#endif + +#ifndef OPENSSL_NO_DH +/* Our internal DH_METHOD that we provide pointers to */ +static DH_METHOD hwcrhk_dh = + { + "CHIL DH method", + NULL, + NULL, + hwcrhk_mod_exp_dh, + NULL, + NULL, + 0, + NULL, + NULL + }; +#endif + +static RAND_METHOD hwcrhk_rand = + { + /* "CHIL RAND method", */ + NULL, + hwcrhk_rand_bytes, + NULL, + NULL, + hwcrhk_rand_bytes, + hwcrhk_rand_status, + }; + +/* Constants used when creating the ENGINE */ +static const char *engine_hwcrhk_id = "chil"; +static const char *engine_hwcrhk_name = "CHIL hardware engine support"; + +#ifndef OPENSSL_NO_DYNAMIC_ENGINE +/* Compatibility hack, the dynamic library uses this form in the path */ +static const char *engine_hwcrhk_id_alt = "ncipher"; +#endif + +/* Internal stuff for HWCryptoHook */ + +/* Some structures needed for proper use of thread locks */ +/* hwcryptohook.h has some typedefs that turn struct HWCryptoHook_MutexValue + into HWCryptoHook_Mutex */ +struct HWCryptoHook_MutexValue + { + int lockid; + }; + +/* hwcryptohook.h has some typedefs that turn + struct HWCryptoHook_PassphraseContextValue + into HWCryptoHook_PassphraseContext */ +struct HWCryptoHook_PassphraseContextValue + { + UI_METHOD *ui_method; + void *callback_data; + }; + +/* hwcryptohook.h has some typedefs that turn + struct HWCryptoHook_CallerContextValue + into HWCryptoHook_CallerContext */ +struct HWCryptoHook_CallerContextValue + { + 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 + BIGNUM's, so lets define a couple of conversion macros */ +#define BN2MPI(mp, bn) \ + {mp.size = bn->top * sizeof(BN_ULONG); mp.buf = (unsigned char *)bn->d;} +#define MPI2BN(bn, mp) \ + {mp.size = bn->dmax * sizeof(BN_ULONG); mp.buf = (unsigned char *)bn->d;} + +static BIO *logstream = NULL; +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 = { + HWCryptoHook_InitFlags_SimpleForkCheck, /* Flags */ + &logstream, /* logstream */ + sizeof(BN_ULONG), /* limbsize */ + 0, /* mslimb first: false for BNs */ + -1, /* msbyte first: use native */ + 0, /* Max mutexes, 0 = no small limit */ + 0, /* Max simultaneous, 0 = default */ + + /* The next few are mutex stuff: we write wrapper functions + around the OS mutex functions. We initialise them to 0 + here, and change that to actual function pointers in hwcrhk_init() + if dynamic locks are supported (that is, if the application + programmer has made sure of setting up callbacks bafore starting + this engine) *and* if disable_mutex_callbacks hasn't been set by + a call to ENGINE_ctrl(ENGINE_CTRL_CHIL_NO_LOCKING). */ + sizeof(HWCryptoHook_Mutex), + 0, + 0, + 0, + 0, + + /* The next few are condvar stuff: we write wrapper functions + round the OS functions. Currently not implemented and not + and absolute necessity even in threaded programs, therefore + 0'ed. Will hopefully be implemented some day, since it + enhances the efficiency of HWCryptoHook. */ + 0, /* sizeof(HWCryptoHook_CondVar), */ + 0, /* hwcrhk_cv_init, */ + 0, /* hwcrhk_cv_wait, */ + 0, /* hwcrhk_cv_signal, */ + 0, /* hwcrhk_cv_broadcast, */ + 0, /* hwcrhk_cv_destroy, */ + + hwcrhk_get_pass, /* pass phrase */ + hwcrhk_insert_card, /* insert a card */ + hwcrhk_log_message /* Log message */ +}; + + +/* Now, to our own code */ + +/* This internal function is used by ENGINE_chil() and possibly by the + * "dynamic" ENGINE support too */ +static int bind_helper(ENGINE *e) + { +#ifndef OPENSSL_NO_RSA + const RSA_METHOD *meth1; +#endif +#ifndef OPENSSL_NO_DH + const DH_METHOD *meth2; +#endif + if(!ENGINE_set_id(e, engine_hwcrhk_id) || + !ENGINE_set_name(e, engine_hwcrhk_name) || +#ifndef OPENSSL_NO_RSA + !ENGINE_set_RSA(e, &hwcrhk_rsa) || +#endif +#ifndef OPENSSL_NO_DH + !ENGINE_set_DH(e, &hwcrhk_dh) || +#endif + !ENGINE_set_RAND(e, &hwcrhk_rand) || + !ENGINE_set_destroy_function(e, hwcrhk_destroy) || + !ENGINE_set_init_function(e, hwcrhk_init) || + !ENGINE_set_finish_function(e, hwcrhk_finish) || + !ENGINE_set_ctrl_function(e, hwcrhk_ctrl) || + !ENGINE_set_load_privkey_function(e, hwcrhk_load_privkey) || + !ENGINE_set_load_pubkey_function(e, hwcrhk_load_pubkey) || + !ENGINE_set_cmd_defns(e, hwcrhk_cmd_defns)) + return 0; + +#ifndef OPENSSL_NO_RSA + /* We know that the "PKCS1_SSLeay()" functions hook properly + * to the cswift-specific mod_exp and mod_exp_crt so we use + * those functions. NB: We don't use ENGINE_openssl() or + * anything "more generic" because something like the RSAref + * code may not hook properly, and if you own one of these + * cards then you have the right to do RSA operations on it + * anyway! */ + meth1 = RSA_PKCS1_SSLeay(); + hwcrhk_rsa.rsa_pub_enc = meth1->rsa_pub_enc; + hwcrhk_rsa.rsa_pub_dec = meth1->rsa_pub_dec; + hwcrhk_rsa.rsa_priv_enc = meth1->rsa_priv_enc; + hwcrhk_rsa.rsa_priv_dec = meth1->rsa_priv_dec; +#endif + +#ifndef OPENSSL_NO_DH + /* Much the same for Diffie-Hellman */ + meth2 = DH_OpenSSL(); + hwcrhk_dh.generate_key = meth2->generate_key; + hwcrhk_dh.compute_key = meth2->compute_key; +#endif + + /* Ensure the hwcrhk error handling is set up */ + ERR_load_HWCRHK_strings(); + return 1; + } + +#ifdef OPENSSL_NO_DYNAMIC_ENGINE +static ENGINE *engine_chil(void) + { + ENGINE *ret = ENGINE_new(); + if(!ret) + return NULL; + if(!bind_helper(ret)) + { + ENGINE_free(ret); + return NULL; + } + return ret; + } + +void ENGINE_load_chil(void) + { + /* Copied from eng_[openssl|dyn].c */ + ENGINE *toadd = engine_chil(); + if(!toadd) return; + ENGINE_add(toadd); + ENGINE_free(toadd); + ERR_clear_error(); + } +#endif + +/* This is a process-global DSO handle used for loading and unloading + * the HWCryptoHook library. NB: This is only set (or unset) during an + * init() or finish() call (reference counts permitting) and they're + * operating with global locks, so this should be thread-safe + * implicitly. */ +static DSO *hwcrhk_dso = NULL; +static HWCryptoHook_ContextHandle hwcrhk_context = 0; +#ifndef OPENSSL_NO_RSA +static int hndidx_rsa = -1; /* Index for KM handle. Not really used yet. */ +#endif + +/* These are the function pointers that are (un)set when the library has + * successfully (un)loaded. */ +static HWCryptoHook_Init_t *p_hwcrhk_Init = NULL; +static HWCryptoHook_Finish_t *p_hwcrhk_Finish = NULL; +static HWCryptoHook_ModExp_t *p_hwcrhk_ModExp = NULL; +#ifndef OPENSSL_NO_RSA +static HWCryptoHook_RSA_t *p_hwcrhk_RSA = NULL; +#endif +static HWCryptoHook_RandomBytes_t *p_hwcrhk_RandomBytes = NULL; +#ifndef OPENSSL_NO_RSA +static HWCryptoHook_RSALoadKey_t *p_hwcrhk_RSALoadKey = NULL; +static HWCryptoHook_RSAGetPublicKey_t *p_hwcrhk_RSAGetPublicKey = NULL; +static HWCryptoHook_RSAUnloadKey_t *p_hwcrhk_RSAUnloadKey = NULL; +#endif +static HWCryptoHook_ModExpCRT_t *p_hwcrhk_ModExpCRT = NULL; + +/* Used in the DSO operations. */ +static const char *HWCRHK_LIBNAME = NULL; +static void free_HWCRHK_LIBNAME(void) + { + if(HWCRHK_LIBNAME) + OPENSSL_free((void*)HWCRHK_LIBNAME); + HWCRHK_LIBNAME = NULL; + } +static const char *get_HWCRHK_LIBNAME(void) + { + if(HWCRHK_LIBNAME) + return HWCRHK_LIBNAME; + return "nfhwcrhk"; + } +static long set_HWCRHK_LIBNAME(const char *name) + { + free_HWCRHK_LIBNAME(); + return (((HWCRHK_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0); + } +static const char *n_hwcrhk_Init = "HWCryptoHook_Init"; +static const char *n_hwcrhk_Finish = "HWCryptoHook_Finish"; +static const char *n_hwcrhk_ModExp = "HWCryptoHook_ModExp"; +#ifndef OPENSSL_NO_RSA +static const char *n_hwcrhk_RSA = "HWCryptoHook_RSA"; +#endif +static const char *n_hwcrhk_RandomBytes = "HWCryptoHook_RandomBytes"; +#ifndef OPENSSL_NO_RSA +static const char *n_hwcrhk_RSALoadKey = "HWCryptoHook_RSALoadKey"; +static const char *n_hwcrhk_RSAGetPublicKey = "HWCryptoHook_RSAGetPublicKey"; +static const char *n_hwcrhk_RSAUnloadKey = "HWCryptoHook_RSAUnloadKey"; +#endif +static const char *n_hwcrhk_ModExpCRT = "HWCryptoHook_ModExpCRT"; + +/* HWCryptoHook library functions and mechanics - these are used by the + * higher-level functions further down. NB: As and where there's no + * error checking, take a look lower down where these functions are + * called, the checking and error handling is probably down there. */ + +/* utility function to obtain a context */ +static int get_context(HWCryptoHook_ContextHandle *hac, + HWCryptoHook_CallerContext *cac) + { + char tempbuf[1024]; + HWCryptoHook_ErrMsgBuf rmsg; + + rmsg.buf = tempbuf; + rmsg.size = sizeof(tempbuf); + + *hac = p_hwcrhk_Init(&hwcrhk_globals, sizeof(hwcrhk_globals), &rmsg, + cac); + if (!*hac) + return 0; + return 1; + } + +/* similarly to release one. */ +static void release_context(HWCryptoHook_ContextHandle hac) + { + p_hwcrhk_Finish(hac); + } + +/* Destructor (complements the "ENGINE_chil()" constructor) */ +static int hwcrhk_destroy(ENGINE *e) + { + free_HWCRHK_LIBNAME(); + ERR_unload_HWCRHK_strings(); + return 1; + } + +/* (de)initialisation functions. */ +static int hwcrhk_init(ENGINE *e) + { + HWCryptoHook_Init_t *p1; + HWCryptoHook_Finish_t *p2; + HWCryptoHook_ModExp_t *p3; +#ifndef OPENSSL_NO_RSA + HWCryptoHook_RSA_t *p4; + HWCryptoHook_RSALoadKey_t *p5; + HWCryptoHook_RSAGetPublicKey_t *p6; + HWCryptoHook_RSAUnloadKey_t *p7; +#endif + HWCryptoHook_RandomBytes_t *p8; + HWCryptoHook_ModExpCRT_t *p9; + + if(hwcrhk_dso != NULL) + { + HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_ALREADY_LOADED); + goto err; + } + /* Attempt to load libnfhwcrhk.so/nfhwcrhk.dll/whatever. */ + hwcrhk_dso = DSO_load(NULL, get_HWCRHK_LIBNAME(), NULL, 0); + if(hwcrhk_dso == NULL) + { + HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_DSO_FAILURE); + goto err; + } + if(!(p1 = (HWCryptoHook_Init_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_Init)) || + !(p2 = (HWCryptoHook_Finish_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_Finish)) || + !(p3 = (HWCryptoHook_ModExp_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_ModExp)) || +#ifndef OPENSSL_NO_RSA + !(p4 = (HWCryptoHook_RSA_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSA)) || + !(p5 = (HWCryptoHook_RSALoadKey_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSALoadKey)) || + !(p6 = (HWCryptoHook_RSAGetPublicKey_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSAGetPublicKey)) || + !(p7 = (HWCryptoHook_RSAUnloadKey_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_RSAUnloadKey)) || +#endif + !(p8 = (HWCryptoHook_RandomBytes_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_RandomBytes)) || + !(p9 = (HWCryptoHook_ModExpCRT_t *) + DSO_bind_func(hwcrhk_dso, n_hwcrhk_ModExpCRT))) + { + HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_DSO_FAILURE); + goto err; + } + /* Copy the pointers */ + p_hwcrhk_Init = p1; + p_hwcrhk_Finish = p2; + p_hwcrhk_ModExp = p3; +#ifndef OPENSSL_NO_RSA + p_hwcrhk_RSA = p4; + p_hwcrhk_RSALoadKey = p5; + p_hwcrhk_RSAGetPublicKey = p6; + p_hwcrhk_RSAUnloadKey = p7; +#endif + p_hwcrhk_RandomBytes = p8; + p_hwcrhk_ModExpCRT = p9; + + /* Check if the application decided to support dynamic locks, + and if it does, use them. */ + if (disable_mutex_callbacks == 0) + { + if (CRYPTO_get_dynlock_create_callback() != NULL && + CRYPTO_get_dynlock_lock_callback() != NULL && + CRYPTO_get_dynlock_destroy_callback() != NULL) + { + hwcrhk_globals.mutex_init = hwcrhk_mutex_init; + hwcrhk_globals.mutex_acquire = hwcrhk_mutex_lock; + hwcrhk_globals.mutex_release = hwcrhk_mutex_unlock; + hwcrhk_globals.mutex_destroy = hwcrhk_mutex_destroy; + } + } + + /* Try and get a context - if not, we may have a DSO but no + * accelerator! */ + if(!get_context(&hwcrhk_context, &password_context)) + { + HWCRHKerr(HWCRHK_F_HWCRHK_INIT,HWCRHK_R_UNIT_FAILURE); + goto err; + } + /* Everything's fine. */ +#ifndef OPENSSL_NO_RSA + if (hndidx_rsa == -1) + hndidx_rsa = RSA_get_ex_new_index(0, + "nFast HWCryptoHook RSA key handle", + NULL, NULL, hwcrhk_ex_free); +#endif + return 1; +err: + if(hwcrhk_dso) + DSO_free(hwcrhk_dso); + hwcrhk_dso = NULL; + p_hwcrhk_Init = NULL; + p_hwcrhk_Finish = NULL; + p_hwcrhk_ModExp = NULL; +#ifndef OPENSSL_NO_RSA + p_hwcrhk_RSA = NULL; + p_hwcrhk_RSALoadKey = NULL; + p_hwcrhk_RSAGetPublicKey = NULL; + p_hwcrhk_RSAUnloadKey = NULL; +#endif + p_hwcrhk_ModExpCRT = NULL; + p_hwcrhk_RandomBytes = NULL; + return 0; + } + +static int hwcrhk_finish(ENGINE *e) + { + int to_return = 1; + free_HWCRHK_LIBNAME(); + if(hwcrhk_dso == NULL) + { + HWCRHKerr(HWCRHK_F_HWCRHK_FINISH,HWCRHK_R_NOT_LOADED); + to_return = 0; + goto err; + } + release_context(hwcrhk_context); + if(!DSO_free(hwcrhk_dso)) + { + HWCRHKerr(HWCRHK_F_HWCRHK_FINISH,HWCRHK_R_DSO_FAILURE); + to_return = 0; + goto err; + } + err: + if (logstream) + BIO_free(logstream); + hwcrhk_dso = NULL; + p_hwcrhk_Init = NULL; + p_hwcrhk_Finish = NULL; + p_hwcrhk_ModExp = NULL; +#ifndef OPENSSL_NO_RSA + p_hwcrhk_RSA = NULL; + p_hwcrhk_RSALoadKey = NULL; + p_hwcrhk_RSAGetPublicKey = NULL; + p_hwcrhk_RSAUnloadKey = NULL; +#endif + p_hwcrhk_ModExpCRT = NULL; + p_hwcrhk_RandomBytes = NULL; + return to_return; + } + +static int hwcrhk_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void)) + { + int to_return = 1; + + switch(cmd) + { + case HWCRHK_CMD_SO_PATH: + if(hwcrhk_dso) + { + HWCRHKerr(HWCRHK_F_HWCRHK_CTRL,HWCRHK_R_ALREADY_LOADED); + return 0; + } + if(p == NULL) + { + HWCRHKerr(HWCRHK_F_HWCRHK_CTRL,ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + return set_HWCRHK_LIBNAME((const char *)p); + case ENGINE_CTRL_SET_LOGSTREAM: + { + BIO *bio = (BIO *)p; + + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + if (logstream) + { + BIO_free(logstream); + logstream = NULL; + } + if (CRYPTO_add(&bio->references,1,CRYPTO_LOCK_BIO) > 1) + logstream = bio; + else + HWCRHKerr(HWCRHK_F_HWCRHK_CTRL,HWCRHK_R_BIO_WAS_FREED); + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + break; + case ENGINE_CTRL_SET_PASSWORD_CALLBACK: + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + password_context.password_callback = (pem_password_cb *)f; + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + break; + case ENGINE_CTRL_SET_USER_INTERFACE: + case HWCRHK_CMD_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: + case HWCRHK_CMD_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 + * initialisation structure. */ + case ENGINE_CTRL_CHIL_SET_FORKCHECK: + case HWCRHK_CMD_FORK_CHECK: + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + if(i) + hwcrhk_globals.flags |= + HWCryptoHook_InitFlags_SimpleForkCheck; + else + hwcrhk_globals.flags &= + ~HWCryptoHook_InitFlags_SimpleForkCheck; + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + break; + /* This will prevent the initialisation function from "installing" + * the mutex-handling callbacks, even if they are available from + * within the library (or were provided to the library from the + * calling application). This is to remove any baggage for + * applications not using multithreading. */ + case ENGINE_CTRL_CHIL_NO_LOCKING: + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + disable_mutex_callbacks = 1; + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + break; + case HWCRHK_CMD_THREAD_LOCKING: + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + disable_mutex_callbacks = ((i == 0) ? 0 : 1); + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + break; + + /* The command isn't understood by this engine */ + default: + HWCRHKerr(HWCRHK_F_HWCRHK_CTRL, + HWCRHK_R_CTRL_COMMAND_NOT_IMPLEMENTED); + to_return = 0; + break; + } + + return to_return; + } + +static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id, + UI_METHOD *ui_method, void *callback_data) + { +#ifndef OPENSSL_NO_RSA + RSA *rtmp = NULL; +#endif + EVP_PKEY *res = NULL; +#ifndef OPENSSL_NO_RSA + HWCryptoHook_MPI e, n; + HWCryptoHook_RSAKeyHandle *hptr; +#endif +#if !defined(OPENSSL_NO_RSA) + char tempbuf[1024]; + HWCryptoHook_ErrMsgBuf rmsg; + HWCryptoHook_PassphraseContext ppctx; +#endif + +#if !defined(OPENSSL_NO_RSA) + rmsg.buf = tempbuf; + rmsg.size = sizeof(tempbuf); +#endif + + if(!hwcrhk_context) + { + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY, + HWCRHK_R_NOT_INITIALISED); + goto err; + } +#ifndef OPENSSL_NO_RSA + hptr = OPENSSL_malloc(sizeof(HWCryptoHook_RSAKeyHandle)); + if (!hptr) + { + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY, + ERR_R_MALLOC_FAILURE); + goto err; + } + ppctx.ui_method = ui_method; + ppctx.callback_data = callback_data; + if (p_hwcrhk_RSALoadKey(hwcrhk_context, key_id, hptr, + &rmsg, &ppctx)) + { + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY, + HWCRHK_R_CHIL_ERROR); + ERR_add_error_data(1,rmsg.buf); + goto err; + } + if (!*hptr) + { + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY, + HWCRHK_R_NO_KEY); + goto err; + } +#endif +#ifndef OPENSSL_NO_RSA + rtmp = RSA_new_method(eng); + RSA_set_ex_data(rtmp, hndidx_rsa, (char *)hptr); + rtmp->e = BN_new(); + rtmp->n = BN_new(); + rtmp->flags |= RSA_FLAG_EXT_PKEY; + MPI2BN(rtmp->e, e); + MPI2BN(rtmp->n, n); + if (p_hwcrhk_RSAGetPublicKey(*hptr, &n, &e, &rmsg) + != HWCRYPTOHOOK_ERROR_MPISIZE) + { + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,HWCRHK_R_CHIL_ERROR); + ERR_add_error_data(1,rmsg.buf); + goto err; + } + + bn_expand2(rtmp->e, e.size/sizeof(BN_ULONG)); + bn_expand2(rtmp->n, n.size/sizeof(BN_ULONG)); + MPI2BN(rtmp->e, e); + MPI2BN(rtmp->n, n); + + if (p_hwcrhk_RSAGetPublicKey(*hptr, &n, &e, &rmsg)) + { + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY, + HWCRHK_R_CHIL_ERROR); + ERR_add_error_data(1,rmsg.buf); + goto err; + } + rtmp->e->top = e.size / sizeof(BN_ULONG); + bn_fix_top(rtmp->e); + rtmp->n->top = n.size / sizeof(BN_ULONG); + bn_fix_top(rtmp->n); + + res = EVP_PKEY_new(); + EVP_PKEY_assign_RSA(res, rtmp); +#endif + + if (!res) + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY, + HWCRHK_R_PRIVATE_KEY_ALGORITHMS_DISABLED); + + return res; + err: + if (res) + EVP_PKEY_free(res); +#ifndef OPENSSL_NO_RSA + if (rtmp) + RSA_free(rtmp); +#endif + return NULL; + } + +static EVP_PKEY *hwcrhk_load_pubkey(ENGINE *eng, const char *key_id, + UI_METHOD *ui_method, void *callback_data) + { + EVP_PKEY *res = NULL; + +#ifndef OPENSSL_NO_RSA + res = hwcrhk_load_privkey(eng, key_id, + ui_method, callback_data); +#endif + + if (res) + switch(res->type) + { +#ifndef OPENSSL_NO_RSA + case EVP_PKEY_RSA: + { + RSA *rsa = NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY); + rsa = res->pkey.rsa; + res->pkey.rsa = RSA_new(); + res->pkey.rsa->n = rsa->n; + res->pkey.rsa->e = rsa->e; + rsa->n = NULL; + rsa->e = NULL; + CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY); + RSA_free(rsa); + } + break; +#endif + default: + HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PUBKEY, + HWCRHK_R_CTRL_COMMAND_NOT_IMPLEMENTED); + goto err; + } + + return res; + err: + if (res) + EVP_PKEY_free(res); + return NULL; + } + +/* A little mod_exp */ +static int hwcrhk_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx) + { + char tempbuf[1024]; + HWCryptoHook_ErrMsgBuf rmsg; + /* Since HWCryptoHook_MPI is pretty compatible with BIGNUM's, + we use them directly, plus a little macro magic. We only + thing we need to make sure of is that enough space is allocated. */ + HWCryptoHook_MPI m_a, m_p, m_n, m_r; + int to_return, ret; + + to_return = 0; /* expect failure */ + rmsg.buf = tempbuf; + rmsg.size = sizeof(tempbuf); + + if(!hwcrhk_context) + { + HWCRHKerr(HWCRHK_F_HWCRHK_MOD_EXP,HWCRHK_R_NOT_INITIALISED); + goto err; + } + /* Prepare the params */ + bn_expand2(r, m->top); /* Check for error !! */ + BN2MPI(m_a, a); + BN2MPI(m_p, p); + BN2MPI(m_n, m); + MPI2BN(r, m_r); + + /* Perform the operation */ + ret = p_hwcrhk_ModExp(hwcrhk_context, m_a, m_p, m_n, &m_r, &rmsg); + + /* Convert the response */ + r->top = m_r.size / sizeof(BN_ULONG); + bn_fix_top(r); + + if (ret < 0) + { + /* FIXME: When this error is returned, HWCryptoHook is + telling us that falling back to software computation + might be a good thing. */ + if(ret == HWCRYPTOHOOK_ERROR_FALLBACK) + { + HWCRHKerr(HWCRHK_F_HWCRHK_MOD_EXP,HWCRHK_R_REQUEST_FALLBACK); + } + else + { + HWCRHKerr(HWCRHK_F_HWCRHK_MOD_EXP,HWCRHK_R_REQUEST_FAILED); + } + ERR_add_error_data(1,rmsg.buf); + goto err; + } + + to_return = 1; +err: + return to_return; + } + +#ifndef OPENSSL_NO_RSA +static int hwcrhk_rsa_mod_exp(BIGNUM *r, const BIGNUM *I, RSA *rsa, BN_CTX *ctx) + { + char tempbuf[1024]; + HWCryptoHook_ErrMsgBuf rmsg; + HWCryptoHook_RSAKeyHandle *hptr; + int to_return = 0, ret; + + rmsg.buf = tempbuf; + rmsg.size = sizeof(tempbuf); + + if(!hwcrhk_context) + { + HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP,HWCRHK_R_NOT_INITIALISED); + goto err; + } + + /* This provides support for nForce keys. Since that's opaque data + all we do is provide a handle to the proper key and let HWCryptoHook + take care of the rest. */ + if ((hptr = (HWCryptoHook_RSAKeyHandle *) RSA_get_ex_data(rsa, hndidx_rsa)) + != NULL) + { + HWCryptoHook_MPI m_a, m_r; + + if(!rsa->n) + { + HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP, + HWCRHK_R_MISSING_KEY_COMPONENTS); + goto err; + } + + /* Prepare the params */ + bn_expand2(r, rsa->n->top); /* Check for error !! */ + BN2MPI(m_a, I); + MPI2BN(r, m_r); + + /* Perform the operation */ + ret = p_hwcrhk_RSA(m_a, *hptr, &m_r, &rmsg); + + /* Convert the response */ + r->top = m_r.size / sizeof(BN_ULONG); + bn_fix_top(r); + + if (ret < 0) + { + /* FIXME: When this error is returned, HWCryptoHook is + telling us that falling back to software computation + might be a good thing. */ + if(ret == HWCRYPTOHOOK_ERROR_FALLBACK) + { + HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP, + HWCRHK_R_REQUEST_FALLBACK); + } + else + { + HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP, + HWCRHK_R_REQUEST_FAILED); + } + ERR_add_error_data(1,rmsg.buf); + goto err; + } + } + else + { + HWCryptoHook_MPI m_a, m_p, m_q, m_dmp1, m_dmq1, m_iqmp, m_r; + + if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) + { + HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP, + HWCRHK_R_MISSING_KEY_COMPONENTS); + goto err; + } + + /* Prepare the params */ + bn_expand2(r, rsa->n->top); /* Check for error !! */ + BN2MPI(m_a, I); + BN2MPI(m_p, rsa->p); + BN2MPI(m_q, rsa->q); + BN2MPI(m_dmp1, rsa->dmp1); + BN2MPI(m_dmq1, rsa->dmq1); + BN2MPI(m_iqmp, rsa->iqmp); + MPI2BN(r, m_r); + + /* Perform the operation */ + ret = p_hwcrhk_ModExpCRT(hwcrhk_context, m_a, m_p, m_q, + m_dmp1, m_dmq1, m_iqmp, &m_r, &rmsg); + + /* Convert the response */ + r->top = m_r.size / sizeof(BN_ULONG); + bn_fix_top(r); + + if (ret < 0) + { + /* FIXME: When this error is returned, HWCryptoHook is + telling us that falling back to software computation + might be a good thing. */ + if(ret == HWCRYPTOHOOK_ERROR_FALLBACK) + { + HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP, + HWCRHK_R_REQUEST_FALLBACK); + } + else + { + HWCRHKerr(HWCRHK_F_HWCRHK_RSA_MOD_EXP, + HWCRHK_R_REQUEST_FAILED); + } + ERR_add_error_data(1,rmsg.buf); + goto err; + } + } + /* If we're here, we must be here with some semblance of success :-) */ + to_return = 1; +err: + return to_return; + } +#endif + +#ifndef OPENSSL_NO_RSA +/* This function is aliased to mod_exp (with the mont stuff dropped). */ +static int hwcrhk_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) + { + return hwcrhk_mod_exp(r, a, p, m, ctx); + } +#endif + +#ifndef OPENSSL_NO_DH +/* This function is aliased to mod_exp (with the dh and mont dropped). */ +static int hwcrhk_mod_exp_dh(const DH *dh, BIGNUM *r, + const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) + { + return hwcrhk_mod_exp(r, a, p, m, ctx); + } +#endif + +/* Random bytes are good */ +static int hwcrhk_rand_bytes(unsigned char *buf, int num) + { + char tempbuf[1024]; + HWCryptoHook_ErrMsgBuf rmsg; + int to_return = 0; /* assume failure */ + int ret; + + rmsg.buf = tempbuf; + rmsg.size = sizeof(tempbuf); + + if(!hwcrhk_context) + { + HWCRHKerr(HWCRHK_F_HWCRHK_RAND_BYTES,HWCRHK_R_NOT_INITIALISED); + goto err; + } + + ret = p_hwcrhk_RandomBytes(hwcrhk_context, buf, num, &rmsg); + if (ret < 0) + { + /* FIXME: When this error is returned, HWCryptoHook is + telling us that falling back to software computation + might be a good thing. */ + if(ret == HWCRYPTOHOOK_ERROR_FALLBACK) + { + HWCRHKerr(HWCRHK_F_HWCRHK_RAND_BYTES, + HWCRHK_R_REQUEST_FALLBACK); + } + else + { + HWCRHKerr(HWCRHK_F_HWCRHK_RAND_BYTES, + HWCRHK_R_REQUEST_FAILED); + } + ERR_add_error_data(1,rmsg.buf); + goto err; + } + to_return = 1; + err: + return to_return; + } + +static int hwcrhk_rand_status(void) + { + return 1; + } + +/* This cleans up an RSA KM key, called when ex_data is freed */ +#ifndef OPENSSL_NO_RSA +static void hwcrhk_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad, + int ind,long argl, void *argp) +{ + char tempbuf[1024]; + HWCryptoHook_ErrMsgBuf rmsg; +#ifndef OPENSSL_NO_RSA + HWCryptoHook_RSAKeyHandle *hptr; +#endif +#if !defined(OPENSSL_NO_RSA) + int ret; +#endif + + rmsg.buf = tempbuf; + rmsg.size = sizeof(tempbuf); + +#ifndef OPENSSL_NO_RSA + hptr = (HWCryptoHook_RSAKeyHandle *) item; + if(hptr) + { + ret = p_hwcrhk_RSAUnloadKey(*hptr, NULL); + OPENSSL_free(hptr); + } +#endif +} +#endif + +/* Mutex calls: since the HWCryptoHook model closely follows the POSIX model + * these just wrap the POSIX functions and add some logging. + */ + +static int hwcrhk_mutex_init(HWCryptoHook_Mutex* mt, + HWCryptoHook_CallerContext *cactx) + { + mt->lockid = CRYPTO_get_new_dynlockid(); + if (mt->lockid == 0) + return 1; /* failure */ + return 0; /* success */ + } + +static int hwcrhk_mutex_lock(HWCryptoHook_Mutex *mt) + { + CRYPTO_w_lock(mt->lockid); + return 0; + } + +static void hwcrhk_mutex_unlock(HWCryptoHook_Mutex * mt) + { + CRYPTO_w_unlock(mt->lockid); + } + +static void hwcrhk_mutex_destroy(HWCryptoHook_Mutex *mt) + { + CRYPTO_destroy_dynlockid(mt->lockid); + } + +static int hwcrhk_get_pass(const char *prompt_info, + int *len_io, char *buf, + HWCryptoHook_PassphraseContext *ppctx, + HWCryptoHook_CallerContext *cactx) + { + 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->ui_method) + { + ui_method = ppctx->ui_method; + callback = NULL; + } + if (ppctx->callback_data) + callback_data = ppctx->callback_data; + } + if (callback == NULL && ui_method == NULL) + { + HWCRHKerr(HWCRHK_F_HWCRHK_GET_PASS,HWCRHK_R_NO_CALLBACK); + return -1; + } + + 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); + UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0); + + if (ok >= 0) + do + { + ok=UI_process(ui); + } + while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0)); + + if (ok >= 0) + *len_io = strlen(buf); + + UI_free(ui); + OPENSSL_free(prompt); + } + } + 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) + { + HWCRHKerr(HWCRHK_F_HWCRHK_INSERT_CARD, + HWCRHK_R_NO_CALLBACK); + return -1; + } + + ui = UI_new_method(ui_method); + + if (ui) + { + char answer; + 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 >= 0 && prompt_info) + { + BIO_snprintf(buf, sizeof(buf)-1, + "Insert card \"%s\"", prompt_info); + ok = UI_dup_input_boolean(ui, buf, + "\n then hit <enter> or C<enter> to cancel\n", + "\r\n", "Cc", UI_INPUT_FLAG_ECHO, &answer); + } + UI_add_user_data(ui, callback_data); + + if (ok >= 0) + ok = UI_process(ui); + UI_free(ui); + + if (ok == -2 || (ok >= 0 && answer == 'C')) + ok = 1; + else if (ok < 0) + ok = -1; + else + ok = 0; + } + return ok; + } + +static void hwcrhk_log_message(void *logstr, const char *message) + { + BIO *lstream = NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_BIO); + if (logstr) + lstream=*(BIO **)logstr; + if (lstream) + { + BIO_printf(lstream, "%s\n", message); + } + CRYPTO_w_unlock(CRYPTO_LOCK_BIO); + } + +/* This stuff is needed if this ENGINE is being compiled into a self-contained + * shared-library. */ +#ifndef OPENSSL_NO_DYNAMIC_ENGINE +static int bind_fn(ENGINE *e, const char *id) + { + if(id && (strcmp(id, engine_hwcrhk_id) != 0) && + (strcmp(id, engine_hwcrhk_id_alt) != 0)) + return 0; + if(!bind_helper(e)) + return 0; + return 1; + } +IMPLEMENT_DYNAMIC_CHECK_FN() +IMPLEMENT_DYNAMIC_BIND_FN(bind_fn) +#endif /* OPENSSL_NO_DYNAMIC_ENGINE */ + +#endif /* !OPENSSL_NO_HW_CHIL */ +#endif /* !OPENSSL_NO_HW */ |