email-core/email-core-cert.c

   1 /*
   2 *  email-service
   3 *
   4 * Copyright (c) 2012 - 2013 Samsung Electronics Co., Ltd. All rights reserved.
   5 *
   6 * Contact: Kyuho Jo <kyuho.jo@samsung.com>, Sunghyun Kwon <sh0701.kwon@samsung.com>
   7 *
   8 * Licensed under the Apache License, Version 2.0 (the "License");
   9 * you may not use this file except in compliance with the License.
  10 * You may obtain a copy of the License at
  11 *
  12 * http://www.apache.org/licenses/LICENSE-2.0
  13 *
  14 * Unless required by applicable law or agreed to in writing, software
  15 * distributed under the License is distributed on an "AS IS" BASIS,
  16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17 * See the License for the specific language governing permissions and
  18 * limitations under the License.
  19 *
  20 */
  21
  22
  23 /******************************************************************************
  24  * File :  email-core-cert.h
  25  * Desc :  Certificate API
  26  *
  27  * Auth :
  28  *
  29  * History :
  30  *    2006.08.16  :  created
  31  *****************************************************************************/
  32 #include <openssl/pkcs7.h>
  33 #include <openssl/pkcs12.h>
  34 #include <openssl/pem.h>
  35 #include <openssl/err.h>
  36 #include <cert-service.h>
  37 #include <glib.h>
  38 #include <cert-svc/ccert.h>
  39 #include <cert-svc/cstring.h>
  40 #include <cert-svc/cpkcs12.h>
  41 #include <cert-svc/cinstance.h>
  42 #include <cert-svc/cprimitives.h>
  43
  44 #include "email-core-cert.h"
  45 #include "email-core-mail.h"
  46 #include "email-core-utils.h"
  47 #include "email-utilities.h"
  48 #include "email-storage.h"
  49 #include "email-debug-log.h"
  50
  51 #define READ_MODE "r"
  52 #define WRITE_MODE "w"
  53
  54 #define TRUSTED_USER "trusteduser/email/"
  55
  56 typedef enum {
  57         CERT_TYPE_ETC          = 0,
  58         CERT_TYPE_PKCS12,
  59         CERT_TYPE_PKCS7,
  60         CERT_TYPE_P7S
  61 } cert_type;
  62
  63 static int emcore_get_certificate_type(char *extension, int *err_code)
  64 {
  65         EM_DEBUG_FUNC_BEGIN("extensiong is [%s]", extension);
  66         int index = 0;
  67         int type = 0;
  68         int err = EMAIL_ERROR_NONE;
  69         char *supported_file_type[] = {"pfx", "p12", "p7s", "pem", "der", "crt", "cer", NULL};
  70
  71         if (!extension) {
  72                 EM_DEBUG_EXCEPTION("Invalid parameter");
  73                 err = EMAIL_ERROR_INVALID_PARAM;
  74                 goto FINISH_OFF;
  75         }
  76
  77         while(supported_file_type[index]) {
  78                 EM_DEBUG_LOG("certificate extension[%d]:[%s]", index, supported_file_type[index]);
  79                 if (strcasecmp(extension, supported_file_type[index]) == 0) {
  80                         switch (index) {
  81                         case 0:
  82                         case 1:
  83                                 type = CERT_TYPE_PKCS12;
  84                                 err = EMAIL_ERROR_INVALID_CERTIFICATE;
  85                                 break;
  86                         case 2:
  87                                 type = CERT_TYPE_P7S;
  88                                 break;
  89                         case 3:
  90                         case 4:
  91                         case 5:
  92                         case 6:
  93                                 type = CERT_TYPE_PKCS7;
  94                                 break;
  95                         default:
  96                                 type = CERT_TYPE_ETC;
  97                                 err = EMAIL_ERROR_INVALID_CERTIFICATE;
  98                                 break;
  99                         }
 100                 }
 101                 index++;
 102         }
 103
 104 FINISH_OFF:
 105
 106         if (err_code) {
 107                 *err_code = err;
 108         }
 109
 110         EM_DEBUG_FUNC_END("File type is [%d]", type);
 111         return type;
 112 }
 113 /*
 114 static GList *emcore_make_glist_from_string(char *email_address_list)
 115 {
 116         EM_DEBUG_FUNC_BEGIN("email_address list : [%s]", email_address_list);
 117         int index = 0;
 118         const gchar seperator = 0x01;
 119         GList *email_list = NULL;
 120         gchar *p_email_address_list = NULL;
 121         gchar **token_list = NULL;
 122
 123         p_email_address_list = g_strdup(email_address_list);
 124
 125         token_list = g_strsplit(p_email_address_list, &seperator, -1);
 126         while (token_list[index] != NULL) {
 127                 email_list = g_list_append(email_list, token_list[index]);
 128                 index++;
 129         }
 130
 131         if (p_email_address_list)
 132                 g_free(p_email_address_list);
 133
 134         return email_list;
 135 }
 136
 137 static char *emcore_store_public_certificate(STACK_OF(X509) *certificates, char *email_address, int *err_code)
 138 {
 139         EM_DEBUG_FUNC_BEGIN();
 140         int index = 0;
 141         int err = EMAIL_ERROR_NONE;
 142         char *file_path = NULL;
 143         BIO *outfile = NULL;
 144
 145         file_path = (char *)em_malloc(256);
 146         if (file_path == NULL) {
 147                 EM_DEBUG_EXCEPTION("em_malloc failed");
 148                 err = EMAIL_ERROR_OUT_OF_MEMORY;
 149                 goto FINISH_OFF;
 150         }
 151
 152         SNPRINTF(file_path, 256, "%s%s%s", CERT_SVC_STORE_PATH, TRUSTED_USER, email_address);
 153         outfile = BIO_new_file(file_path, WRITE_MODE);
 154         if (outfile == NULL) {
 155                 EM_DEBUG_EXCEPTION("File open failed[write mode]");
 156                 err = EMAIL_ERROR_SYSTEM_FAILURE;
 157                 goto FINISH_OFF;
 158         }
 159
 160         for (index = 0; index < sk_X509_num(certificates); index++) {
 161                 EM_DEBUG_LOG("Write the certificate in pem file : [%d]", index);
 162                 PEM_write_bio_X509(outfile, sk_X509_value(certificates, index));
 163         }
 164
 165 FINISH_OFF:
 166
 167         if (outfile)
 168                 BIO_free(outfile);
 169
 170         EM_DEBUG_FUNC_END();
 171
 172         return file_path;
 173 }
 174 */
 175 #if 0
 176 INTERNAL_FUNC int emcore_load_PFX_file(char *certificate, char *password, EVP_PKEY **pri_key, X509 **cert, STACK_OF(X509) **ca, int *err_code)
 177 {
 178         EM_DEBUG_FUNC_BEGIN("Certificate path : [%s], password : [%s]", certificate, password);
 179
 180         int err = EMAIL_ERROR_NONE;
 181         int ret = false;
 182         FILE *fp = NULL;
 183         PKCS12 *p12 = NULL;
 184
 185         OpenSSL_add_all_algorithms();
 186         ERR_load_crypto_strings();
 187         if (!(fp = fopen(certificate, "rb"))) {
 188                 EM_DEBUG_EXCEPTION("fopen failed : [%s]", certificate);
 189                 err = EMAIL_ERROR_SYSTEM_FAILURE;
 190                 goto FINISH_OFF;
 191         }
 192
 193         p12 = d2i_PKCS12_fp(fp, NULL);
 194         if (!p12) {
 195                 EM_DEBUG_EXCEPTION("d2i_PKCS12_fp failed");
 196                 err = EMAIL_ERROR_SYSTEM_FAILURE;
 197                 goto FINISH_OFF;
 198         }
 199
 200         if (!PKCS12_parse(p12, password, pri_key, cert, ca)) {
 201                 EM_DEBUG_EXCEPTION("PKCS12_parse failed");
 202                 err = EMAIL_ERROR_SYSTEM_FAILURE;
 203                 goto FINISH_OFF;
 204         }
 205
 206         ret = true;
 207
 208 FINISH_OFF:
 209
 210         if (fp)
 211                 fclose(fp);
 212
 213         if (p12)
 214                 PKCS12_free(p12);
 215
 216         if (err_code)
 217                 *err_code = err;
 218
 219         return ret;
 220 }
 221 #endif
 222
 223 INTERNAL_FUNC int emcore_load_PFX_file(char *certificate, EVP_PKEY **pri_key, X509 **cert, STACK_OF(X509) **ca, int *err_code)
 224 {
 225         EM_DEBUG_FUNC_BEGIN("certificate : [%s]", certificate);
 226         int err = EMAIL_ERROR_NONE;
 227         int ret = false;
 228         size_t key_size = 0;
 229         char *private_key = NULL;
 230
 231         /* Variable for certificate */
 232         X509 *t_cert = NULL;
 233         BIO *bio_mem = NULL;
 234 //      STACK_OF(X509) *t_ca = NULL;
 235
 236         /* Variable for private key */
 237         EVP_PKEY *t_pri_key = NULL;
 238
 239         CertSvcString csstring;
 240         CertSvcInstance cert_instance;
 241         CertSvcCertificate csc_cert;
 242         CertSvcCertificateList certificate_list;
 243
 244         if (certificate == NULL) {
 245                 EM_DEBUG_EXCEPTION("Invalid parameter");
 246                 err = EMAIL_ERROR_INVALID_PARAM;
 247                 goto FINISH_OFF;
 248         }
 249
 250         /* Create instance */
 251         err = certsvc_instance_new(&cert_instance);
 252         if (err != CERTSVC_SUCCESS) {
 253                 EM_DEBUG_EXCEPTION("certsvc_instance_new failed : [%d]", err);
 254                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 255                 goto FINISH_OFF;
 256         }
 257
 258         /* Make the pfxID string */
 259         err = certsvc_string_new(cert_instance, certificate, EM_SAFE_STRLEN(certificate), &csstring);
 260         if (err != CERTSVC_SUCCESS) {
 261                 EM_DEBUG_EXCEPTION("certsvc_string_new failed : [%d]", err);
 262                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 263                 goto FINISH_OFF;
 264         }
 265
 266         /* Load the certificate list of pkcs12 type */
 267         err = certsvc_pkcs12_load_certificate_list(cert_instance, csstring, &certificate_list);
 268         if (err != CERTSVC_SUCCESS) {
 269                 EM_DEBUG_EXCEPTION("certsvc_pkcs12_load_certificate_list failed : [%d]", err);
 270                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 271                 goto FINISH_OFF;
 272         }
 273
 274         /* Get a certificate */
 275         err = certsvc_certificate_list_get_one(certificate_list, 0, &csc_cert);
 276         if (err != CERTSVC_SUCCESS) {
 277                 EM_DEBUG_EXCEPTION("certsvc_certificate_list_get_one failed : [%d]", err);
 278                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 279                 goto FINISH_OFF;
 280         }
 281
 282         /* Convert from char to X509 */
 283         err = certsvc_certificate_dup_x509(csc_cert, &t_cert);
 284         if (t_cert == NULL || err != CERTSVC_SUCCESS) {
 285                 EM_DEBUG_EXCEPTION("certsvc_certificate_dup_x509 failed");
 286                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 287                 goto FINISH_OFF;
 288         }
 289
 290         /* Get the private key */
 291         err = certsvc_pkcs12_private_key_dup(cert_instance, csstring, &private_key, &key_size);
 292         if (err != CERTSVC_SUCCESS) {
 293                 EM_DEBUG_EXCEPTION("certsvc_pkcs12_private_key_dup failed : [%d]", err);
 294                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 295                 goto FINISH_OFF;
 296         }
 297
 298         EM_DEBUG_LOG("key_size : [%d], private_key : [%s]", key_size, private_key);
 299
 300         /* Convert char to pkey */
 301         bio_mem = BIO_new(BIO_s_mem());
 302         if (bio_mem == NULL) {
 303                 EM_DEBUG_EXCEPTION("malloc failed");
 304                 err = EMAIL_ERROR_OUT_OF_MEMORY;
 305                 goto FINISH_OFF;
 306         }
 307
 308         if (BIO_write(bio_mem, private_key, key_size) <= 0) {
 309                 EM_DEBUG_EXCEPTION("BIO_write failed");
 310                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 311                 goto FINISH_OFF;
 312         }
 313
 314         t_pri_key = PEM_read_bio_PrivateKey(bio_mem, NULL, 0, NULL);
 315         if (t_pri_key == NULL) {
 316                 EM_DEBUG_EXCEPTION("PEM_read_bio_PrivateKey failed");
 317                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 318                 goto FINISH_OFF;
 319         }
 320
 321         ret = true;
 322
 323 FINISH_OFF:
 324
 325         if (bio_mem)
 326                 BIO_free(bio_mem);
 327
 328         if (true) {
 329                 if (cert)
 330                         *cert = t_cert;
 331
 332                 if (pri_key)
 333                         *pri_key = t_pri_key;
 334         } else {
 335                 X509_free(t_cert);
 336                 EVP_PKEY_free(t_pri_key);
 337         }
 338
 339         if (private_key)
 340                 EM_SAFE_FREE(private_key);
 341
 342         if (err_code)
 343                 *err_code = err;
 344
 345         return ret;
 346 }
 347
 348 INTERNAL_FUNC int emcore_add_public_certificate(char *public_cert_path, char *save_name, int *err_code)
 349 {
 350         EM_DEBUG_FUNC_BEGIN("Path [%s], filename [%s]", public_cert_path, save_name);
 351         int err = EMAIL_ERROR_NONE;
 352         int ret = false;
 353         int validity = 0;
 354         int cert_type = 0;
 355         char temp_file[512] = {0, };
 356         char temp_save_name[512] = {0, };
 357         char filepath[512] = {0, };
 358         char *extension = NULL;
 359         emstorage_certificate_tbl_t *cert = NULL;
 360         CERT_CONTEXT *context = NULL;
 361
 362         if (public_cert_path == NULL || save_name == NULL) {
 363                 EM_DEBUG_EXCEPTION("Invalid parameter");
 364                 err = EMAIL_ERROR_INVALID_PARAM;
 365                 goto FINISH_OFF;
 366         }
 367
 368         /* Initilize the structure of certificate */
 369         context = cert_svc_cert_context_init();
 370
 371         /* Parse the file type */
 372         extension = em_get_extension_from_file_path(public_cert_path, NULL);
 373         if (extension == NULL) {
 374                 EM_DEBUG_EXCEPTION("Invalid parameter");
 375                 err = EMAIL_ERROR_INVALID_PARAM;
 376                 goto FINISH_OFF;
 377         }
 378
 379         /* Get the file type information */
 380         cert_type = emcore_get_certificate_type(extension, &err);
 381         if (!cert_type || err == EMAIL_ERROR_INVALID_CERTIFICATE) {
 382                 EM_DEBUG_EXCEPTION("Invalid certificate");
 383                 goto FINISH_OFF;
 384         }
 385
 386         /* Create temp file and rename */
 387         if (cert_type == CERT_TYPE_P7S) {
 388                 extension = "der";
 389         }
 390
 391         SNPRINTF(temp_file, sizeof(temp_file), "%s%s%s.%s", MAILTEMP, DIR_SEPERATOR, save_name, extension);
 392         EM_DEBUG_LOG("temp cert path : [%s]", temp_file);
 393
 394         if (!emstorage_copy_file(public_cert_path, temp_file, false, &err)) {
 395                 EM_DEBUG_EXCEPTION("emstorage_copy_file failed [%d]", err);
 396                 goto FINISH_OFF;
 397         }
 398
 399         /* Load the public certificate */
 400         err = cert_svc_load_file_to_context(context, temp_file);
 401         if (err != CERT_SVC_ERR_NO_ERROR) {
 402                 EM_DEBUG_EXCEPTION("Load cert failed : [%d]", err);
 403                 err = EMAIL_ERROR_INVALID_CERTIFICATE;
 404                 goto FINISH_OFF;
 405         }
 406
 407         /* Verify the certificate */
 408         if (cert_svc_verify_certificate(context, &validity) != CERT_SVC_ERR_NO_ERROR) {
 409                 EM_DEBUG_EXCEPTION("cert_svc_verify_certificate failed");
 410 //              err = EMAIL_ERROR_INVALID_CERTIFICATE;
 411 //              goto FINISH_OFF;
 412         }
 413
 414         if (validity <= 0) {
 415                 EM_DEBUG_LOG("Invalid certificate");
 416         }
 417
 418         /* Load the certificate information */
 419         if (cert_svc_extract_certificate_data(context) != CERT_SVC_ERR_NO_ERROR) {
 420                 EM_DEBUG_EXCEPTION("Extract the certificate failed");
 421                 err = EMAIL_ERROR_UNKNOWN;
 422                 goto FINISH_OFF;
 423         }
 424
 425         /* Store the certificate file to trusted folder */
 426         if (cert_svc_add_certificate_to_store(temp_file, TRUSTED_USER) != CERT_SVC_ERR_NO_ERROR) {
 427                 EM_DEBUG_EXCEPTION("Add certificate to trusted folder");
 428                 err = EMAIL_ERROR_UNKNOWN;
 429                 goto FINISH_OFF;
 430         }
 431
 432         /* Store the certificate to DB */
 433         SNPRINTF(filepath, sizeof(filepath), "%s%s%s.%s", CERT_SVC_STORE_PATH, TRUSTED_USER, save_name, extension);
 434         SNPRINTF(temp_save_name, sizeof(temp_save_name), "<%s>", save_name);
 435
 436         cert = (emstorage_certificate_tbl_t *)em_malloc(sizeof(emstorage_certificate_tbl_t));
 437         if (cert == NULL) {
 438                 EM_DEBUG_EXCEPTION("em_malloc failed");
 439                 err = EMAIL_ERROR_OUT_OF_MEMORY;
 440                 goto FINISH_OFF;
 441         }
 442
 443         cert->issue_year = context->certDesc->info.validPeriod.firstYear;
 444         cert->issue_year = context->certDesc->info.validPeriod.firstYear;
 445         cert->issue_month = context->certDesc->info.validPeriod.firstMonth;
 446         cert->issue_day = context->certDesc->info.validPeriod.firstDay;
 447         cert->expiration_year= context->certDesc->info.validPeriod.secondYear;
 448         cert->expiration_month = context->certDesc->info.validPeriod.secondMonth;
 449         cert->expiration_day = context->certDesc->info.validPeriod.secondDay;
 450         cert->issue_organization_name = EM_SAFE_STRDUP(context->certDesc->info.issuer.organizationName);
 451         cert->email_address = EM_SAFE_STRDUP(temp_save_name);
 452         cert->subject_str = EM_SAFE_STRDUP(context->certDesc->info.issuerStr);
 453         cert->filepath = EM_SAFE_STRDUP(filepath);
 454
 455         if (emstorage_add_certificate(cert, true, &err)) {
 456                 EM_DEBUG_EXCEPTION("emstorage_add_certificate failed");
 457                 goto FINISH_OFF;
 458         }
 459
 460         if (!emstorage_delete_file(public_cert_path, &err)) {
 461                 EM_DEBUG_EXCEPTION("emstorage_delete_file failed [%d]", err);
 462                 goto FINISH_OFF;
 463         }
 464
 465         ret = true;
 466
 467 FINISH_OFF:
 468
 469         emstorage_free_certificate(&cert, 1, NULL);
 470
 471         cert_svc_cert_context_final(context);
 472
 473         if (err_code != NULL) {
 474                 *err_code = err;
 475         }
 476
 477         EM_DEBUG_FUNC_END();
 478
 479         return ret;
 480
 481 }
 482
 483 INTERNAL_FUNC int emcore_delete_public_certificate(char *email_address, int *err_code)
 484 {
 485         EM_DEBUG_FUNC_BEGIN();
 486         int ret = false;
 487         int err = EMAIL_ERROR_NONE;
 488         emstorage_certificate_tbl_t *certificate = NULL;
 489
 490         if (email_address == NULL) {
 491                 EM_DEBUG_EXCEPTION("Invalid parameter");
 492                 err = EMAIL_ERROR_INVALID_PARAM;
 493                 goto FINISH_OFF;
 494         }
 495
 496         if (!emstorage_get_certificate_by_email_address(email_address, &certificate, false, 0, &err)) {
 497                 EM_DEBUG_EXCEPTION("emstorage_get_certificate failed");
 498                 goto FINISH_OFF;
 499         }
 500
 501         if (remove(certificate->filepath) < 0) {
 502                 EM_DEBUG_EXCEPTION("remove failed : [%s]", certificate->filepath);
 503                 goto FINISH_OFF;
 504         }
 505
 506         if (!emstorage_delete_certificate(certificate->certificate_id, true, &err)) {
 507                 EM_DEBUG_EXCEPTION("emstorage_delete_certificate failed");
 508                 goto FINISH_OFF;
 509         }
 510
 511         ret = true;
 512 FINISH_OFF:
 513
 514         if (certificate != NULL)
 515                 emstorage_free_certificate(&certificate, 1, NULL);
 516
 517         if (err_code != NULL)
 518                 *err_code = err;
 519
 520         EM_DEBUG_FUNC_END();
 521
 522         return ret;
 523 }
 524
 525 INTERNAL_FUNC int emcore_verify_signature(char *p7s_file_path, char *mime_entity, int *validity, int *err_code)
 526 {
 527         EM_DEBUG_FUNC_BEGIN("path : [%s], mime_entity : [%s]", p7s_file_path, mime_entity);
 528         int ret = false;
 529         int err = EMAIL_ERROR_NONE;
 530         int t_validity = 0;
 531         int flags = PKCS7_NOVERIFY;
 532
 533         BIO *bio_p7s = NULL;
 534
 535         BIO *bio_indata = NULL;
 536
 537         PKCS7 *pkcs7_p7s = NULL;
 538
 539         /* Initialize */
 540         OpenSSL_add_all_algorithms();
 541
 542         /* Open p7s file */
 543         bio_p7s = BIO_new_file(p7s_file_path, INMODE);
 544         if (!bio_p7s) {
 545                 EM_DEBUG_EXCEPTION("File open failed");
 546                 err = EMAIL_ERROR_SYSTEM_FAILURE;
 547                 goto FINISH_OFF;
 548         }
 549
 550         /* Open input data file */
 551         bio_indata = BIO_new_file(mime_entity, INMODE);
 552         if (!bio_p7s) {
 553                 EM_DEBUG_EXCEPTION("File open failed");
 554                 err = EMAIL_ERROR_SYSTEM_FAILURE;
 555                 goto FINISH_OFF;
 556         }
 557
 558         /* Load the p7s file */
 559         pkcs7_p7s = d2i_PKCS7_bio(bio_p7s, NULL);
 560         if (!pkcs7_p7s) {
 561                 EM_DEBUG_EXCEPTION("d2i_PKCS7_bio failed");
 562                 err = EMAIL_ERROR_LOAD_CERTIFICATE_FAILURE;
 563                 goto FINISH_OFF;
 564         }
 565
 566         if (!PKCS7_verify(pkcs7_p7s, NULL, NULL, bio_indata, NULL, flags)) {
 567                 EM_DEBUG_EXCEPTION("PKCS7_verify failed");
 568                 err = EMAIL_ERROR_SYSTEM_FAILURE;
 569                 goto FINISH_OFF;
 570         }
 571
 572         t_validity = 1;
 573
 574         ret = true;
 575
 576 FINISH_OFF:
 577
 578         EVP_cleanup();
 579
 580         if (pkcs7_p7s)
 581                 PKCS7_free(pkcs7_p7s);
 582
 583         if (bio_p7s)
 584                 BIO_free(bio_p7s);
 585
 586         if (bio_indata)
 587                 BIO_free(bio_indata);
 588
 589         if (validity)
 590                 *validity = t_validity;
 591
 592         if (err_code)
 593                 *err_code = err;
 594
 595         EM_DEBUG_FUNC_END();
 596         return ret;
 597 }
 598
 599 INTERNAL_FUNC int emcore_verify_certificate(char *certificate, int *validity, int *err_code)
 600 {
 601         EM_DEBUG_FUNC_BEGIN();
 602         int ret = false;
 603         int err = EMAIL_ERROR_NONE;
 604         int p_validity = 0;
 605
 606         CERT_CONTEXT *context = NULL;
 607
 608         context = cert_svc_cert_context_init();
 609
 610         err = cert_svc_load_file_to_context(context, certificate);
 611         if (err != CERT_SVC_ERR_NO_ERROR) {
 612                 EM_DEBUG_EXCEPTION("Certificate load failed");
 613                 goto FINISH_OFF;
 614         }
 615
 616         err = cert_svc_verify_certificate(context, &p_validity);
 617         if (err != CERT_SVC_ERR_NO_ERROR) {
 618                 EM_DEBUG_EXCEPTION("Certificate verify failed");
 619                 goto FINISH_OFF;
 620         }
 621
 622         ret = true;
 623
 624 FINISH_OFF:
 625
 626         if (validity != NULL)
 627                 *validity = p_validity;
 628
 629         if (err_code != NULL) {
 630                 *err_code = err;
 631         }
 632
 633         cert_svc_cert_context_final(context);
 634
 635         EM_DEBUG_FUNC_END();
 636         return ret;
 637 }
 638
 639 INTERNAL_FUNC int emcore_free_certificate(email_certificate_t **certificate, int count, int *err_code)
 640 {
 641         EM_DEBUG_FUNC_BEGIN("certificate [%p], count [%d]", certificate, count);
 642
 643         if (count <= 0 || !certificate || !*certificate) {
 644                 EM_DEBUG_EXCEPTION("EMAIL_ERROR_INVALID_PARAM");
 645                 if (err_code)
 646                         *err_code = EMAIL_ERROR_INVALID_PARAM;
 647                 return false;
 648         }
 649
 650         email_certificate_t *p_certificate = *certificate;
 651         int i;
 652
 653         for (i=0;i<count;i++) {
 654                 EM_SAFE_FREE(p_certificate[i].issue_organization_name);
 655                 EM_SAFE_FREE(p_certificate[i].email_address);
 656                 EM_SAFE_FREE(p_certificate[i].subject_str);
 657                 EM_SAFE_FREE(p_certificate[i].filepath);
 658         }
 659
 660         EM_SAFE_FREE(p_certificate);
 661         *certificate = NULL;
 662
 663         if (err_code)
 664                 *err_code = EMAIL_ERROR_NONE;
 665
 666         EM_DEBUG_FUNC_END();
 667         return true;
 668 }