/* engines/e_capi.c */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project. */ /* ==================================================================== * Copyright (c) 2008 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. * ==================================================================== */ #include <stdio.h> #include <string.h> #include <openssl/crypto.h> #include <openssl/buffer.h> #include <openssl/rsa.h> #include <openssl/bn.h> #ifdef OPENSSL_SYS_WIN32 #ifndef OPENSSL_NO_CAPIENG #include <windows.h> #ifndef _WIN32_WINNT #define _WIN32_WINNT 0x0400 #endif #include <wincrypt.h> #undef X509_EXTENSIONS #undef X509_CERT_PAIR /* Definitions which may be missing from earlier version of headers */ #ifndef CERT_STORE_OPEN_EXISTING_FLAG #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000 #endif #ifndef CERT_STORE_CREATE_NEW_FLAG #define CERT_STORE_CREATE_NEW_FLAG 0x00002000 #endif #include <openssl/engine.h> #include <openssl/pem.h> #include <openssl/x509v3.h> #include "e_capi_err.h" #include "e_capi_err.c" static const char *engine_capi_id = "capi"; static const char *engine_capi_name = "CryptoAPI ENGINE"; typedef struct CAPI_CTX_st CAPI_CTX; typedef struct CAPI_KEY_st CAPI_KEY; static void capi_addlasterror(void); static void capi_adderror(DWORD err); static void CAPI_trace(CAPI_CTX *ctx, char *format, ...); static int capi_list_providers(CAPI_CTX *ctx, BIO *out); static int capi_list_containers(CAPI_CTX *ctx, BIO *out); int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename); void capi_free_key(CAPI_KEY *key); static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore); CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id); static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id, UI_METHOD *ui_method, void *callback_data); static int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len, unsigned char *sigret, unsigned int *siglen, const RSA *rsa); static int capi_rsa_priv_enc(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding); static int capi_rsa_priv_dec(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding); static int capi_rsa_free(RSA *rsa); static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen, DSA *dsa); static int capi_dsa_free(DSA *dsa); static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl, STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey, STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data); static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs); #ifdef OPENSSL_CAPIENG_DIALOG static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs); #endif typedef PCCERT_CONTEXT (WINAPI *CERTDLG)(HCERTSTORE, HWND, LPCWSTR, LPCWSTR, DWORD, DWORD, void *); typedef HWND (WINAPI *GETCONSWIN)(void); /* This structure contains CAPI ENGINE specific data: * it contains various global options and affects how * other functions behave. */ #define CAPI_DBG_TRACE 2 #define CAPI_DBG_ERROR 1 struct CAPI_CTX_st { int debug_level; char *debug_file; /* Parameters to use for container lookup */ DWORD keytype; LPTSTR cspname; DWORD csptype; /* Certificate store name to use */ LPTSTR storename; LPTSTR ssl_client_store; /* System store flags */ DWORD store_flags; /* Lookup string meanings in load_private_key */ /* Substring of subject: uses "storename" */ #define CAPI_LU_SUBSTR 0 /* Friendly name: uses storename */ #define CAPI_LU_FNAME 1 /* Container name: uses cspname, keytype */ #define CAPI_LU_CONTNAME 2 int lookup_method; /* Info to dump with dumpcerts option */ /* Issuer and serial name strings */ #define CAPI_DMP_SUMMARY 0x1 /* Friendly name */ #define CAPI_DMP_FNAME 0x2 /* Full X509_print dump */ #define CAPI_DMP_FULL 0x4 /* Dump PEM format certificate */ #define CAPI_DMP_PEM 0x8 /* Dump pseudo key (if possible) */ #define CAPI_DMP_PSKEY 0x10 /* Dump key info (if possible) */ #define CAPI_DMP_PKEYINFO 0x20 DWORD dump_flags; int (*client_cert_select)(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs); CERTDLG certselectdlg; GETCONSWIN getconswindow; }; static CAPI_CTX *capi_ctx_new(); static void capi_ctx_free(CAPI_CTX *ctx); static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check); static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx); #define CAPI_CMD_LIST_CERTS ENGINE_CMD_BASE #define CAPI_CMD_LOOKUP_CERT (ENGINE_CMD_BASE + 1) #define CAPI_CMD_DEBUG_LEVEL (ENGINE_CMD_BASE + 2) #define CAPI_CMD_DEBUG_FILE (ENGINE_CMD_BASE + 3) #define CAPI_CMD_KEYTYPE (ENGINE_CMD_BASE + 4) #define CAPI_CMD_LIST_CSPS (ENGINE_CMD_BASE + 5) #define CAPI_CMD_SET_CSP_IDX (ENGINE_CMD_BASE + 6) #define CAPI_CMD_SET_CSP_NAME (ENGINE_CMD_BASE + 7) #define CAPI_CMD_SET_CSP_TYPE (ENGINE_CMD_BASE + 8) #define CAPI_CMD_LIST_CONTAINERS (ENGINE_CMD_BASE + 9) #define CAPI_CMD_LIST_OPTIONS (ENGINE_CMD_BASE + 10) #define CAPI_CMD_LOOKUP_METHOD (ENGINE_CMD_BASE + 11) #define CAPI_CMD_STORE_NAME (ENGINE_CMD_BASE + 12) #define CAPI_CMD_STORE_FLAGS (ENGINE_CMD_BASE + 13) static const ENGINE_CMD_DEFN capi_cmd_defns[] = { {CAPI_CMD_LIST_CERTS, "list_certs", "List all certificates in store", ENGINE_CMD_FLAG_NO_INPUT}, {CAPI_CMD_LOOKUP_CERT, "lookup_cert", "Lookup and output certificates", ENGINE_CMD_FLAG_STRING}, {CAPI_CMD_DEBUG_LEVEL, "debug_level", "debug level (1=errors, 2=trace)", ENGINE_CMD_FLAG_NUMERIC}, {CAPI_CMD_DEBUG_FILE, "debug_file", "debugging filename)", ENGINE_CMD_FLAG_STRING}, {CAPI_CMD_KEYTYPE, "key_type", "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE", ENGINE_CMD_FLAG_NUMERIC}, {CAPI_CMD_LIST_CSPS, "list_csps", "List all CSPs", ENGINE_CMD_FLAG_NO_INPUT}, {CAPI_CMD_SET_CSP_IDX, "csp_idx", "Set CSP by index", ENGINE_CMD_FLAG_NUMERIC}, {CAPI_CMD_SET_CSP_NAME, "csp_name", "Set CSP name, (default CSP used if not specified)", ENGINE_CMD_FLAG_STRING}, {CAPI_CMD_SET_CSP_TYPE, "csp_type", "Set CSP type, (default RSA_PROV_FULL)", ENGINE_CMD_FLAG_NUMERIC}, {CAPI_CMD_LIST_CONTAINERS, "list_containers", "list container names", ENGINE_CMD_FLAG_NO_INPUT}, {CAPI_CMD_LIST_OPTIONS, "list_options", "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, " "32=private key info)", ENGINE_CMD_FLAG_NUMERIC}, {CAPI_CMD_LOOKUP_METHOD, "lookup_method", "Set key lookup method (1=substring, 2=friendlyname, 3=container name)", ENGINE_CMD_FLAG_NUMERIC}, {CAPI_CMD_STORE_NAME, "store_name", "certificate store name, default \"MY\"", ENGINE_CMD_FLAG_STRING}, {CAPI_CMD_STORE_FLAGS, "store_flags", "Certificate store flags: 1 = system store", ENGINE_CMD_FLAG_NUMERIC}, {0, NULL, NULL, 0} }; static int capi_idx = -1; static int rsa_capi_idx = -1; static int dsa_capi_idx = -1; static int cert_capi_idx = -1; static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void)) { int ret = 1; CAPI_CTX *ctx; BIO *out; if (capi_idx == -1) { CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED); return 0; } ctx = ENGINE_get_ex_data(e, capi_idx); out = BIO_new_fp(stdout, BIO_NOCLOSE); switch (cmd) { case CAPI_CMD_LIST_CSPS: ret = capi_list_providers(ctx, out); break; case CAPI_CMD_LIST_CERTS: ret = capi_list_certs(ctx, out, NULL); break; case CAPI_CMD_LOOKUP_CERT: ret = capi_list_certs(ctx, out, p); break; case CAPI_CMD_LIST_CONTAINERS: ret = capi_list_containers(ctx, out); break; case CAPI_CMD_STORE_NAME: if (ctx->storename) OPENSSL_free(ctx->storename); ctx->storename = BUF_strdup(p); CAPI_trace(ctx, "Setting store name to %s\n", p); break; case CAPI_CMD_STORE_FLAGS: if (i & 1) { ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE; ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER; } else { ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER; ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE; } CAPI_trace(ctx, "Setting flags to %d\n", i); break; case CAPI_CMD_DEBUG_LEVEL: ctx->debug_level = (int)i; CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level); break; case CAPI_CMD_DEBUG_FILE: ctx->debug_file = BUF_strdup(p); CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file); break; case CAPI_CMD_KEYTYPE: ctx->keytype = i; CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype); break; case CAPI_CMD_SET_CSP_IDX: ret = capi_ctx_set_provname_idx(ctx, i); break; case CAPI_CMD_LIST_OPTIONS: ctx->dump_flags = i; break; case CAPI_CMD_LOOKUP_METHOD: if (i < 1 || i > 3) { CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD); return 0; } ctx->lookup_method = i; break; case CAPI_CMD_SET_CSP_NAME: ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1); break; case CAPI_CMD_SET_CSP_TYPE: ctx->csptype = i; break; default: CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND); ret = 0; } BIO_free(out); return ret; } static RSA_METHOD capi_rsa_method = { "CryptoAPI RSA method", 0, /* pub_enc */ 0, /* pub_dec */ capi_rsa_priv_enc, /* priv_enc */ capi_rsa_priv_dec, /* priv_dec */ 0, /* rsa_mod_exp */ 0, /* bn_mod_exp */ 0, /* init */ capi_rsa_free, /* finish */ RSA_FLAG_SIGN_VER, /* flags */ NULL, /* app_data */ capi_rsa_sign, /* rsa_sign */ 0 /* rsa_verify */ }; static DSA_METHOD capi_dsa_method = { "CryptoAPI DSA method", capi_dsa_do_sign, /* dsa_do_sign */ 0, /* dsa_sign_setup */ 0, /* dsa_do_verify */ 0, /* dsa_mod_exp */ 0, /* bn_mod_exp */ 0, /* init */ capi_dsa_free, /* finish */ 0, /* flags */ NULL, /* app_data */ 0, /* dsa_paramgen */ 0 /* dsa_keygen */ }; static int capi_init(ENGINE *e) { CAPI_CTX *ctx; const RSA_METHOD *ossl_rsa_meth; const DSA_METHOD *ossl_dsa_meth; capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0); cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0); ctx = capi_ctx_new(); if (!ctx || (capi_idx < 0)) goto memerr; ENGINE_set_ex_data(e, capi_idx, ctx); /* Setup RSA_METHOD */ rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0); ossl_rsa_meth = RSA_PKCS1_SSLeay(); capi_rsa_method.rsa_pub_enc = ossl_rsa_meth->rsa_pub_enc; capi_rsa_method.rsa_pub_dec = ossl_rsa_meth->rsa_pub_dec; capi_rsa_method.rsa_mod_exp = ossl_rsa_meth->rsa_mod_exp; capi_rsa_method.bn_mod_exp = ossl_rsa_meth->bn_mod_exp; /* Setup DSA Method */ dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0); ossl_dsa_meth = DSA_OpenSSL(); capi_dsa_method.dsa_do_verify = ossl_dsa_meth->dsa_do_verify; capi_dsa_method.dsa_mod_exp = ossl_dsa_meth->dsa_mod_exp; capi_dsa_method.bn_mod_exp = ossl_dsa_meth->bn_mod_exp; #ifdef OPENSSL_CAPIENG_DIALOG { HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL")); HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL")); if (cryptui) ctx->certselectdlg = (CERTDLG)GetProcAddress(cryptui, "CryptUIDlgSelectCertificateFromStore"); if (kernel) ctx->getconswindow = (GETCONSWIN)GetProcAddress(kernel, "GetConsoleWindow"); if (cryptui && !OPENSSL_isservice()) ctx->client_cert_select = cert_select_dialog; } #endif return 1; memerr: CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE); return 0; return 1; } static int capi_destroy(ENGINE *e) { ERR_unload_CAPI_strings(); return 1; } static int capi_finish(ENGINE *e) { CAPI_CTX *ctx; ctx = ENGINE_get_ex_data(e, capi_idx); capi_ctx_free(ctx); ENGINE_set_ex_data(e, capi_idx, NULL); return 1; } /* CryptoAPI key application data. This contains * a handle to the private key container (for sign operations) * and a handle to the key (for decrypt operations). */ struct CAPI_KEY_st { /* Associated certificate context (if any) */ PCCERT_CONTEXT pcert; HCRYPTPROV hprov; HCRYPTKEY key; DWORD keyspec; }; static int bind_capi(ENGINE *e) { if (!ENGINE_set_id(e, engine_capi_id) || !ENGINE_set_name(e, engine_capi_name) || !ENGINE_set_init_function(e, capi_init) || !ENGINE_set_finish_function(e, capi_finish) || !ENGINE_set_destroy_function(e, capi_destroy) || !ENGINE_set_RSA(e, &capi_rsa_method) || !ENGINE_set_DSA(e, &capi_dsa_method) || !ENGINE_set_load_privkey_function(e, capi_load_privkey) || !ENGINE_set_load_ssl_client_cert_function(e, capi_load_ssl_client_cert) || !ENGINE_set_cmd_defns(e, capi_cmd_defns) || !ENGINE_set_ctrl_function(e, capi_ctrl)) return 0; ERR_load_CAPI_strings(); return 1; } #ifndef OPENSSL_NO_DYNAMIC_ENGINE static int bind_helper(ENGINE *e, const char *id) { if(id && (strcmp(id, engine_capi_id) != 0)) return 0; if(!bind_capi(e)) return 0; return 1; } IMPLEMENT_DYNAMIC_CHECK_FN() IMPLEMENT_DYNAMIC_BIND_FN(bind_helper) #else static ENGINE *engine_capi(void) { ENGINE *ret = ENGINE_new(); if(!ret) return NULL; if(!bind_capi(ret)) { ENGINE_free(ret); return NULL; } return ret; } void ENGINE_load_capi(void) { /* Copied from eng_[openssl|dyn].c */ ENGINE *toadd = engine_capi(); if(!toadd) return; ENGINE_add(toadd); ENGINE_free(toadd); ERR_clear_error(); } #endif static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen) { int i; /* Reverse buffer in place: since this is a keyblob structure * that will be freed up after conversion anyway it doesn't * matter if we change it. */ for(i = 0; i < binlen / 2; i++) { unsigned char c; c = bin[i]; bin[i] = bin[binlen - i - 1]; bin[binlen - i - 1] = c; } if (!BN_bin2bn(bin, binlen, bn)) return 0; return 1; } /* Given a CAPI_KEY get an EVP_PKEY structure */ static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key) { unsigned char *pubkey = NULL; DWORD len; BLOBHEADER *bh; RSA *rkey = NULL; DSA *dkey = NULL; EVP_PKEY *ret = NULL; if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len)) { CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR); capi_addlasterror(); return NULL; } pubkey = OPENSSL_malloc(len); if (!pubkey) goto memerr; if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len)) { CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR); capi_addlasterror(); goto err; } bh = (BLOBHEADER *)pubkey; if (bh->bType != PUBLICKEYBLOB) { CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB); goto err; } if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX) { RSAPUBKEY *rp; DWORD rsa_modlen; unsigned char *rsa_modulus; rp = (RSAPUBKEY *)(bh + 1); if (rp->magic != 0x31415352) { char magstr[10]; BIO_snprintf(magstr, 10, "%lx", rp->magic); CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER); ERR_add_error_data(2, "magic=0x", magstr); goto err; } rsa_modulus = (unsigned char *)(rp + 1); rkey = RSA_new_method(eng); if (!rkey) goto memerr; rkey->e = BN_new(); rkey->n = BN_new(); if (!rkey->e || !rkey->n) goto memerr; if (!BN_set_word(rkey->e, rp->pubexp)) goto memerr; rsa_modlen = rp->bitlen / 8; if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen)) goto memerr; RSA_set_ex_data(rkey, rsa_capi_idx, key); if (!(ret = EVP_PKEY_new())) goto memerr; EVP_PKEY_assign_RSA(ret, rkey); rkey = NULL; } else if (bh->aiKeyAlg == CALG_DSS_SIGN) { DSSPUBKEY *dp; DWORD dsa_plen; unsigned char *btmp; dp = (DSSPUBKEY *)(bh + 1); if (dp->magic != 0x31535344) { char magstr[10]; BIO_snprintf(magstr, 10, "%lx", dp->magic); CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER); ERR_add_error_data(2, "magic=0x", magstr); goto err; } dsa_plen = dp->bitlen / 8; btmp = (unsigned char *)(dp + 1); dkey = DSA_new_method(eng); if (!dkey) goto memerr; dkey->p = BN_new(); dkey->q = BN_new(); dkey->g = BN_new(); dkey->pub_key = BN_new(); if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key) goto memerr; if (!lend_tobn(dkey->p, btmp, dsa_plen)) goto memerr; btmp += dsa_plen; if (!lend_tobn(dkey->q, btmp, 20)) goto memerr; btmp += 20; if (!lend_tobn(dkey->g, btmp, dsa_plen)) goto memerr; btmp += dsa_plen; if (!lend_tobn(dkey->pub_key, btmp, dsa_plen)) goto memerr; btmp += dsa_plen; DSA_set_ex_data(dkey, dsa_capi_idx, key); if (!(ret = EVP_PKEY_new())) goto memerr; EVP_PKEY_assign_DSA(ret, dkey); dkey = NULL; } else { char algstr[10]; BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg); CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM); ERR_add_error_data(2, "aiKeyAlg=0x", algstr); goto err; } err: if (pubkey) OPENSSL_free(pubkey); if (!ret) { if (rkey) RSA_free(rkey); if (dkey) DSA_free(dkey); } return ret; memerr: CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_MALLOC_FAILURE); goto err; } static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id, UI_METHOD *ui_method, void *callback_data) { CAPI_CTX *ctx; CAPI_KEY *key; EVP_PKEY *ret; ctx = ENGINE_get_ex_data(eng, capi_idx); if (!ctx) { CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT); return NULL; } key = capi_find_key(ctx, key_id); if (!key) return NULL; ret = capi_get_pkey(eng, key); if (!ret) capi_free_key(key); return ret; } /* CryptoAPI RSA operations */ int capi_rsa_priv_enc(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding) { CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED); return -1; } int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len, unsigned char *sigret, unsigned int *siglen, const RSA *rsa) { ALG_ID alg; HCRYPTHASH hash; DWORD slen; unsigned int i; int ret = -1; CAPI_KEY *capi_key; CAPI_CTX *ctx; ctx = ENGINE_get_ex_data(rsa->engine, capi_idx); CAPI_trace(ctx, "Called CAPI_rsa_sign()\n"); capi_key = RSA_get_ex_data(rsa, rsa_capi_idx); if (!capi_key) { CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY); return -1; } /* Convert the signature type to a CryptoAPI algorithm ID */ switch(dtype) { case NID_sha1: alg = CALG_SHA1; break; case NID_md5: alg = CALG_MD5; break; case NID_md5_sha1: alg = CALG_SSL3_SHAMD5; break; default: { char algstr[10]; BIO_snprintf(algstr, 10, "%lx", dtype); CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID); ERR_add_error_data(2, "NID=0x", algstr); return -1; } } /* Create the hash object */ if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash)) { CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT); capi_addlasterror(); return -1; } /* Set the hash value to the value passed */ if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0)) { CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE); capi_addlasterror(); goto err; } /* Finally sign it */ slen = RSA_size(rsa); if(!CryptSignHash(hash, capi_key->keyspec, NULL, 0, sigret, &slen)) { CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH); capi_addlasterror(); goto err; } else { ret = 1; /* Inplace byte reversal of signature */ for(i = 0; i < slen / 2; i++) { unsigned char c; c = sigret[i]; sigret[i] = sigret[slen - i - 1]; sigret[slen - i - 1] = c; } *siglen = slen; } /* Now cleanup */ err: CryptDestroyHash(hash); return ret; } int capi_rsa_priv_dec(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding) { int i; unsigned char *tmpbuf; CAPI_KEY *capi_key; CAPI_CTX *ctx; ctx = ENGINE_get_ex_data(rsa->engine, capi_idx); CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n"); capi_key = RSA_get_ex_data(rsa, rsa_capi_idx); if (!capi_key) { CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY); return -1; } if(padding != RSA_PKCS1_PADDING) { char errstr[10]; BIO_snprintf(errstr, 10, "%d", padding); CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING); ERR_add_error_data(2, "padding=", errstr); return -1; } /* Create temp reverse order version of input */ if(!(tmpbuf = OPENSSL_malloc(flen)) ) { CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE); return -1; } for(i = 0; i < flen; i++) tmpbuf[flen - i - 1] = from[i]; /* Finally decrypt it */ if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen)) { CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR); capi_addlasterror(); OPENSSL_free(tmpbuf); return -1; } else memcpy(to, tmpbuf, flen); OPENSSL_free(tmpbuf); return flen; } static int capi_rsa_free(RSA *rsa) { CAPI_KEY *capi_key; capi_key = RSA_get_ex_data(rsa, rsa_capi_idx); capi_free_key(capi_key); RSA_set_ex_data(rsa, rsa_capi_idx, 0); return 1; } /* CryptoAPI DSA operations */ static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen, DSA *dsa) { HCRYPTHASH hash; DWORD slen; DSA_SIG *ret = NULL; CAPI_KEY *capi_key; CAPI_CTX *ctx; unsigned char csigbuf[40]; ctx = ENGINE_get_ex_data(dsa->engine, capi_idx); CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n"); capi_key = DSA_get_ex_data(dsa, dsa_capi_idx); if (!capi_key) { CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY); return NULL; } if (dlen != 20) { CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH); return NULL; } /* Create the hash object */ if(!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash)) { CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT); capi_addlasterror(); return NULL; } /* Set the hash value to the value passed */ if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0)) { CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE); capi_addlasterror(); goto err; } /* Finally sign it */ slen = sizeof(csigbuf); if(!CryptSignHash(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen)) { CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH); capi_addlasterror(); goto err; } else { ret = DSA_SIG_new(); if (!ret) goto err; ret->r = BN_new(); ret->s = BN_new(); if (!ret->r || !ret->s) goto err; if (!lend_tobn(ret->r, csigbuf, 20) || !lend_tobn(ret->s, csigbuf + 20, 20)) { DSA_SIG_free(ret); ret = NULL; goto err; } } /* Now cleanup */ err: OPENSSL_cleanse(csigbuf, 40); CryptDestroyHash(hash); return ret; } static int capi_dsa_free(DSA *dsa) { CAPI_KEY *capi_key; capi_key = DSA_get_ex_data(dsa, dsa_capi_idx); capi_free_key(capi_key); DSA_set_ex_data(dsa, dsa_capi_idx, 0); return 1; } static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr) { BIO *out; if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file)) return; out = BIO_new_file(ctx->debug_file, "a+"); BIO_vprintf(out, format, argptr); BIO_free(out); } static void CAPI_trace(CAPI_CTX *ctx, char *format, ...) { va_list args; va_start(args, format); capi_vtrace(ctx, CAPI_DBG_TRACE, format, args); va_end(args); } static void capi_addlasterror(void) { capi_adderror(GetLastError()); } static void capi_adderror(DWORD err) { char errstr[10]; BIO_snprintf(errstr, 10, "%lX", err); ERR_add_error_data(2, "Error code= 0x", errstr); } static char *wide_to_asc(LPWSTR wstr) { char *str; if (!wstr) return NULL; str = OPENSSL_malloc(wcslen(wstr) + 1); if (!str) { CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE); return NULL; } sprintf(str, "%S", wstr); return str; } static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx) { LPSTR name; DWORD len, err; CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx); if (!CryptEnumProviders(idx, NULL, 0, ptype, NULL, &len)) { err = GetLastError(); if (err == ERROR_NO_MORE_ITEMS) return 2; CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR); capi_adderror(err); return 0; } name = OPENSSL_malloc(len); if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len)) { err = GetLastError(); if (err == ERROR_NO_MORE_ITEMS) return 2; CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR); capi_adderror(err); return 0; } *pname = name; CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype); return 1; } static int capi_list_providers(CAPI_CTX *ctx, BIO *out) { DWORD idx, ptype; int ret; LPTSTR provname = NULL; CAPI_trace(ctx, "capi_list_providers\n"); BIO_printf(out, "Available CSPs:\n"); for(idx = 0; ; idx++) { ret = capi_get_provname(ctx, &provname, &ptype, idx); if (ret == 2) break; if (ret == 0) break; BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype); OPENSSL_free(provname); } return 1; } static int capi_list_containers(CAPI_CTX *ctx, BIO *out) { int ret = 1; HCRYPTPROV hprov; DWORD err, idx, flags, buflen = 0, clen; LPSTR cname; CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype); if (!CryptAcquireContext(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT)) { CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR); capi_addlasterror(); return 0; } if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST)) { CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR); capi_addlasterror(); return 0; } CAPI_trace(ctx, "Got max container len %d\n", buflen); if (buflen == 0) buflen = 1024; cname = OPENSSL_malloc(buflen); if (!cname) { CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE); goto err; } for (idx = 0;;idx++) { clen = buflen; cname[0] = 0; if (idx == 0) flags = CRYPT_FIRST; else flags = 0; if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags)) { err = GetLastError(); if (err == ERROR_NO_MORE_ITEMS) goto done; CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR); capi_adderror(err); goto err; } CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags); if (!cname[0] && (clen == buflen)) { CAPI_trace(ctx, "Enumerate bug: using workaround\n"); goto done; } BIO_printf(out, "%d. %s\n", idx, cname); } err: ret = 0; done: if (cname) OPENSSL_free(cname); CryptReleaseContext(hprov, 0); return ret; } CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert) { DWORD len; CRYPT_KEY_PROV_INFO *pinfo; if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len)) return NULL; pinfo = OPENSSL_malloc(len); if (!pinfo) { CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE); return NULL; } if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len)) { CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO); capi_addlasterror(); OPENSSL_free(pinfo); return NULL; } return pinfo; } static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo) { char *provname = NULL, *contname = NULL; if (!pinfo) { BIO_printf(out, " No Private Key\n"); return; } provname = wide_to_asc(pinfo->pwszProvName); contname = wide_to_asc(pinfo->pwszContainerName); if (!provname || !contname) goto err; BIO_printf(out, " Private Key Info:\n"); BIO_printf(out, " Provider Name: %s, Provider Type %d\n", provname, pinfo->dwProvType); BIO_printf(out, " Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec); err: if (provname) OPENSSL_free(provname); if (contname) OPENSSL_free(contname); } char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert) { LPWSTR wfname; DWORD dlen; CAPI_trace(ctx, "capi_cert_get_fname\n"); if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen)) return NULL; wfname = OPENSSL_malloc(dlen); if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen)) { char *fname = wide_to_asc(wfname); OPENSSL_free(wfname); return fname; } CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME); capi_addlasterror(); OPENSSL_free(wfname); return NULL; } void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert) { X509 *x; unsigned char *p; unsigned long flags = ctx->dump_flags; if (flags & CAPI_DMP_FNAME) { char *fname; fname = capi_cert_get_fname(ctx, cert); if (fname) { BIO_printf(out, " Friendly Name \"%s\"\n", fname); OPENSSL_free(fname); } else BIO_printf(out, " <No Friendly Name>\n"); } p = cert->pbCertEncoded; x = d2i_X509(NULL, &p, cert->cbCertEncoded); if (!x) BIO_printf(out, " <Can't parse certificate>\n"); if (flags & CAPI_DMP_SUMMARY) { BIO_printf(out, " Subject: "); X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE); BIO_printf(out, "\n Issuer: "); X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE); BIO_printf(out, "\n"); } if (flags & CAPI_DMP_FULL) X509_print_ex(out, x, XN_FLAG_ONELINE,0); if (flags & CAPI_DMP_PKEYINFO) { CRYPT_KEY_PROV_INFO *pinfo; pinfo = capi_get_prov_info(ctx, cert); capi_dump_prov_info(ctx, out, pinfo); if (pinfo) OPENSSL_free(pinfo); } if (flags & CAPI_DMP_PEM) PEM_write_bio_X509(out, x); X509_free(x); } HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename) { HCERTSTORE hstore; if (!storename) storename = ctx->storename; if (!storename) storename = "MY"; CAPI_trace(ctx, "Opening certificate store %s\n", storename); hstore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, 0, ctx->store_flags, storename); if (!hstore) { CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE); capi_addlasterror(); } return hstore; } int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id) { char *storename; int idx; int ret = 1; HCERTSTORE hstore; PCCERT_CONTEXT cert = NULL; storename = ctx->storename; if (!storename) storename = "MY"; CAPI_trace(ctx, "Listing certs for store %s\n", storename); hstore = capi_open_store(ctx, storename); if (!hstore) return 0; if (id) { cert = capi_find_cert(ctx, id, hstore); if (!cert) { ret = 0; goto err; } capi_dump_cert(ctx, out, cert); CertFreeCertificateContext(cert); } else { for(idx = 0;;idx++) { LPWSTR fname = NULL; cert = CertEnumCertificatesInStore(hstore, cert); if (!cert) break; BIO_printf(out, "Certificate %d\n", idx); capi_dump_cert(ctx, out, cert); } } err: CertCloseStore(hstore, 0); return ret; } static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore) { PCCERT_CONTEXT cert = NULL; char *fname = NULL; int match; switch(ctx->lookup_method) { case CAPI_LU_SUBSTR: return CertFindCertificateInStore(hstore, X509_ASN_ENCODING, 0, CERT_FIND_SUBJECT_STR_A, id, NULL); case CAPI_LU_FNAME: for(;;) { cert = CertEnumCertificatesInStore(hstore, cert); if (!cert) return NULL; fname = capi_cert_get_fname(ctx, cert); if (fname) { if (strcmp(fname, id)) match = 0; else match = 1; OPENSSL_free(fname); if (match) return cert; } } default: return NULL; } } static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec) { CAPI_KEY *key; key = OPENSSL_malloc(sizeof(CAPI_KEY)); CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n", contname, provname, ptype); if (!CryptAcquireContext(&key->hprov, contname, provname, ptype, 0)) { CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR); capi_addlasterror(); goto err; } if (!CryptGetUserKey(key->hprov, keyspec, &key->key)) { CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR); capi_addlasterror(); CryptReleaseContext(key->hprov, 0); goto err; } key->keyspec = keyspec; key->pcert = NULL; return key; err: OPENSSL_free(key); return NULL; } static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert) { CAPI_KEY *key = NULL; CRYPT_KEY_PROV_INFO *pinfo = NULL; char *provname = NULL, *contname = NULL; pinfo = capi_get_prov_info(ctx, cert); if (!pinfo) goto err; provname = wide_to_asc(pinfo->pwszProvName); contname = wide_to_asc(pinfo->pwszContainerName); if (!provname || !contname) goto err; key = capi_get_key(ctx, contname, provname, pinfo->dwProvType, pinfo->dwKeySpec); err: if (pinfo) OPENSSL_free(pinfo); if (provname) OPENSSL_free(provname); if (contname) OPENSSL_free(contname); return key; } CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id) { PCCERT_CONTEXT cert; HCERTSTORE hstore; CAPI_KEY *key = NULL; switch (ctx->lookup_method) { case CAPI_LU_SUBSTR: case CAPI_LU_FNAME: hstore = capi_open_store(ctx, NULL); if (!hstore) return NULL; cert = capi_find_cert(ctx, id, hstore); if (cert) { key = capi_get_cert_key(ctx, cert); CertFreeCertificateContext(cert); } CertCloseStore(hstore, 0); break; case CAPI_LU_CONTNAME: key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype, ctx->keytype); break; } return key; } void capi_free_key(CAPI_KEY *key) { if (!key) return; CryptDestroyKey(key->key); CryptReleaseContext(key->hprov, 0); if (key->pcert) CertFreeCertificateContext(key->pcert); OPENSSL_free(key); } /* Initialize a CAPI_CTX structure */ static CAPI_CTX *capi_ctx_new() { CAPI_CTX *ctx; ctx = OPENSSL_malloc(sizeof(CAPI_CTX)); if (!ctx) { CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE); return NULL; } ctx->cspname = NULL; ctx->csptype = PROV_RSA_FULL; ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME; ctx->keytype = AT_KEYEXCHANGE; ctx->storename = NULL; ctx->ssl_client_store = NULL; ctx->store_flags = CERT_STORE_OPEN_EXISTING_FLAG | CERT_STORE_READONLY_FLAG | CERT_SYSTEM_STORE_CURRENT_USER; ctx->lookup_method = CAPI_LU_SUBSTR; ctx->debug_level = 0; ctx->debug_file = NULL; ctx->client_cert_select = cert_select_simple; return ctx; } static void capi_ctx_free(CAPI_CTX *ctx) { CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx); if (!ctx) return; if (ctx->cspname) OPENSSL_free(ctx->cspname); if (ctx->debug_file) OPENSSL_free(ctx->debug_file); if (ctx->storename) OPENSSL_free(ctx->storename); if (ctx->ssl_client_store) OPENSSL_free(ctx->ssl_client_store); OPENSSL_free(ctx); } static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check) { CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type); if (check) { HCRYPTPROV hprov; if (!CryptAcquireContext(&hprov, NULL, pname, type, CRYPT_VERIFYCONTEXT)) { CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR); capi_addlasterror(); return 0; } CryptReleaseContext(hprov, 0); } ctx->cspname = BUF_strdup(pname); ctx->csptype = type; return 1; } static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx) { LPSTR pname; DWORD type; if (capi_get_provname(ctx, &pname, &type, idx) != 1) return 0; return capi_ctx_set_provname(ctx, pname, type, 0); } static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x) { int i; X509_NAME *nm; /* Special case: empty list: match anything */ if (sk_X509_NAME_num(ca_dn) <= 0) return 1; for (i = 0; i < sk_X509_NAME_num(ca_dn); i++) { nm = sk_X509_NAME_value(ca_dn, i); if (!X509_NAME_cmp(nm, X509_get_issuer_name(x))) return 1; } return 0; } static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl, STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey, STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data) { STACK_OF(X509) *certs = NULL; X509 *x; char *storename; const char *p; int i, client_cert_idx; HCERTSTORE hstore; PCCERT_CONTEXT cert = NULL, excert = NULL; CAPI_CTX *ctx; CAPI_KEY *key; ctx = ENGINE_get_ex_data(e, capi_idx); *pcert = NULL; *pkey = NULL; storename = ctx->ssl_client_store; if (!storename) storename = "MY"; hstore = capi_open_store(ctx, storename); if (!hstore) return 0; /* Enumerate all certificates collect any matches */ for(i = 0;;i++) { cert = CertEnumCertificatesInStore(hstore, cert); if (!cert) break; p = cert->pbCertEncoded; x = d2i_X509(NULL, &p, cert->cbCertEncoded); if (!x) { CAPI_trace(ctx, "Can't Parse Certificate %d\n", i); continue; } if (cert_issuer_match(ca_dn, x) && X509_check_purpose(x, X509_PURPOSE_SSL_CLIENT, 0)) { key = capi_get_cert_key(ctx, cert); if (!key) { X509_free(x); continue; } /* Match found: attach extra data to it so * we can retrieve the key later. */ excert = CertDuplicateCertificateContext(cert); key->pcert = excert; X509_set_ex_data(x, cert_capi_idx, key); if (!certs) certs = sk_X509_new_null(); sk_X509_push(certs, x); } else X509_free(x); } if (cert) CertFreeCertificateContext(cert); if (hstore) CertCloseStore(hstore, 0); if (!certs) return 0; /* Select the appropriate certificate */ client_cert_idx = ctx->client_cert_select(e, ssl, certs); /* Set the selected certificate and free the rest */ for(i = 0; i < sk_X509_num(certs); i++) { x = sk_X509_value(certs, i); if (i == client_cert_idx) *pcert = x; else { key = X509_get_ex_data(x, cert_capi_idx); capi_free_key(key); X509_free(x); } } sk_X509_free(certs); if (!*pcert) return 0; /* Setup key for selected certificate */ key = X509_get_ex_data(*pcert, cert_capi_idx); *pkey = capi_get_pkey(e, key); X509_set_ex_data(*pcert, cert_capi_idx, NULL); return 1; } /* Simple client cert selection function: always select first */ static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs) { return 0; } #ifdef OPENSSL_CAPIENG_DIALOG /* More complex cert selection function, using standard function * CryptUIDlgSelectCertificateFromStore() to produce a dialog box. */ /* Definitions which are in cryptuiapi.h but this is not present in older * versions of headers. */ #ifndef CRYPTUI_SELECT_LOCATION_COLUMN #define CRYPTUI_SELECT_LOCATION_COLUMN 0x000000010 #define CRYPTUI_SELECT_INTENDEDUSE_COLUMN 0x000000004 #endif #define dlg_title L"OpenSSL Application SSL Client Certificate Selection" #define dlg_prompt L"Select a certificate to use for authentication" #define dlg_columns CRYPTUI_SELECT_LOCATION_COLUMN \ |CRYPTUI_SELECT_INTENDEDUSE_COLUMN static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs) { X509 *x; HCERTSTORE dstore; PCCERT_CONTEXT cert; CAPI_CTX *ctx; CAPI_KEY *key; HWND hwnd; int i, idx = -1; if (sk_X509_num(certs) == 1) return 0; ctx = ENGINE_get_ex_data(e, capi_idx); /* Create an in memory store of certificates */ dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0, CERT_STORE_CREATE_NEW_FLAG, NULL); if (!dstore) { CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_CREATING_STORE); capi_addlasterror(); goto err; } /* Add all certificates to store */ for(i = 0; i < sk_X509_num(certs); i++) { x = sk_X509_value(certs, i); key = X509_get_ex_data(x, cert_capi_idx); if (!CertAddCertificateContextToStore(dstore, key->pcert, CERT_STORE_ADD_NEW, NULL)) { CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_ADDING_CERT); capi_addlasterror(); goto err; } } hwnd = GetForegroundWindow(); if (!hwnd) hwnd = GetActiveWindow(); if (!hwnd && ctx->getconswindow) hwnd = ctx->getconswindow(); /* Call dialog to select one */ cert = ctx->certselectdlg(dstore, hwnd, dlg_title, dlg_prompt, dlg_columns, 0, NULL); /* Find matching cert from list */ if (cert) { for(i = 0; i < sk_X509_num(certs); i++) { x = sk_X509_value(certs, i); key = X509_get_ex_data(x, cert_capi_idx); if (CertCompareCertificate( X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, cert->pCertInfo, key->pcert->pCertInfo)) { idx = i; break; } } } err: if (dstore) CertCloseStore(dstore, 0); return idx; } #endif #endif #else /* !WIN32 */ #include <openssl/engine.h> #ifndef OPENSSL_NO_DYNAMIC_ENGINE OPENSSL_EXPORT int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; } IMPLEMENT_DYNAMIC_CHECK_FN() #endif #endif