vpn/plugins/ipsec.c

   1 /*
   2  *
   3  *  ConnMan VPN daemon
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License version 2 as
   7  *  published by the Free Software Foundation.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <stdio.h>
  29 #include <sys/stat.h>
  30 #include <net/if.h>
  31
  32 #include <glib.h>
  33 #include <gio/gio.h>
  34
  35 #include <openssl/bio.h>
  36 #include <openssl/pem.h>
  37 #include <openssl/err.h>
  38 #include <openssl/safestack.h>
  39 #include <openssl/pkcs12.h>
  40 #include <openssl/x509.h>
  41 #include <openssl/conf.h>
  42
  43 #define CONNMAN_API_SUBJECT_TO_CHANGE
  44 #include <connman/plugin.h>
  45 #include <connman/log.h>
  46 #include <connman/task.h>
  47 #include <connman/dbus.h>
  48 #include <connman/ipconfig.h>
  49
  50 #include "../vpn-provider.h"
  51
  52 #include "vpn.h"
  53 #include "ipsec.h"
  54 #include "vici-client.h"
  55
  56 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
  57
  58 typedef enum {
  59         CERT_TYPE_NONE,
  60         CERT_TYPE_DER,
  61         CERT_TYPE_PEM,
  62         CERT_TYPE_PKCS12,
  63         CERT_TYPE_MAX,
  64 } cert_type_e;
  65
  66 static DBusConnection *connection;
  67 static VICIClient *vici_client;
  68 static GFileMonitor* monitor;
  69
  70 struct openssl_private_data {
  71         EVP_PKEY *private_key;
  72         X509 *local_cert;
  73         STACK_OF(X509) *ca_certs;
  74 };
  75
  76 struct ipsec_private_data {
  77         struct vpn_provider *provider;
  78         struct openssl_private_data openssl_data;
  79         vpn_provider_connect_cb_t cb;
  80
  81         void *user_data;
  82 };
  83
  84 struct {
  85         const char *cm_opt;
  86         const char *vici_key;
  87         const char *subsection;
  88         vici_add_element add_elem;
  89 } ipsec_conn_options[] = {
  90         {"IPsec.Version", "version", NULL, vici_add_kv},
  91         {"IPsec.LeftAddrs", "local_addrs", NULL, vici_add_kvl},
  92         {"IPsec.RightAddrs", "remote_addrs", NULL, vici_add_kvl},
  93
  94         {"IPsec.LocalAuth", "auth", "local", vici_add_kv},
  95         {"IPsec.LocalID", "id", "local", vici_add_kv},
  96         {"IPsec.LocalXauthID", "xauth_id", "local", vici_add_kv},
  97         {"IPsec.LocalXauthAuth", "auth", "local-xauth", vici_add_kv},
  98         {"IPsec.LocalXauthXauthID", "xauth_id", "local-xauth", vici_add_kv},
  99         {"IPsec.RemoteAuth", "auth", "remote", vici_add_kv},
 100         {"IPsec.RemoteID", "id", "remote", vici_add_kv},
 101         {"IPsec.RemoteXauthID", "xauth_id", "remote", vici_add_kv},
 102         {"IPsec.RemoteXauthAuth", "auth", "remote-xauth", vici_add_kv},
 103         {"IPsec.RemoteXauthXauthID", "xauth_id", "remote-xauth", vici_add_kv},
 104         {"IPsec.ChildrenLocalTS", "local_ts", "children", vici_add_kvl},
 105         {"IPsec.ChildrenRemoteTS", "remote_ts", "children", vici_add_kvl},
 106 };
 107
 108 struct {
 109         const char *cm_opt;
 110         const char *vici_type;
 111 } ipsec_shared_options[] = {
 112         {"IPsec.IKEData", "data"},
 113         {"IPsec.IKEOwners", "owners"},
 114         {"IPsec.XauthData", "data"},
 115         {"IPsec.XauthOwners", "owners"},
 116 };
 117
 118 struct {
 119         const char *cm_opt;
 120         const char *vici_type;
 121         const char *vici_flag;
 122 } ipsec_cert_options[] = {
 123         {"IPsec.CertType", "type", NULL},
 124         {"IPsec.CertFlag", "flag", NULL},
 125         {"IPsec.CertData", "data", NULL},
 126         {"IPsec.CertPass", "data", NULL},
 127 };
 128
 129 struct {
 130         const char *cm_opt;
 131         const char *vici_type;
 132 } ipsec_pkey_options[] = {
 133         {"IPsec.PKeyType", "type"},
 134         {"IPsec.PKeyData", "data"},
 135 };
 136
 137 static const char *ikev1_esp_proposals [] ={
 138                 "aes256-sha256",
 139                 "aes128-sha256",
 140                 "aes256-sha1",
 141                 "aes128-sha1",
 142                 "aes256-md5",
 143                 "aes128-md5",
 144                 "3des-sha1",
 145                 "3des-md5",
 146                 NULL,
 147 };
 148
 149 static const char *ikev1_proposals [] ={
 150                 "aes256-sha256-modp1024",
 151                 "aes128-sha256-modp1024",
 152                 "aes256-sha1-modp1024",
 153                 "aes128-sha1-modp1024",
 154                 "aes256-md5-modp1024",
 155                 "aes128-md5-modp1024",
 156                 "3des-sha1-modp1024",
 157                 "3des-md5-modp1024",
 158                 NULL,
 159 };
 160
 161 static const char *ikev2_esp_proposals = "aes256-aes128-sha512-sha384-sha256-sha1-modp2048-modp1536-modp1024";
 162
 163 static const char *ikev2_proposals = "aes256-aes128-sha512-sha384-sha256-sha1-modp2048-modp1536-modp1024";
 164
 165 static void init_openssl(void)
 166 {
 167         /* Load the human readable error strings for libcrypto */
 168 #if OPENSSL_API_COMPAT < 0x10100000L
 169         /* TODO :remove this after debug */
 170         DBG("openssl version is under 1.01");
 171         ERR_load_crypto_strings();
 172 #else
 173         /* As of version 1.1.0 OpenSSL will automatically allocate
 174          * all resources that it needs so no explicit initialisation
 175          * is required. Similarly it will also automatically
 176          * deinitialise as required. */
 177         /* OPENSSL_init_crypto(); */
 178 #endif
 179         /* Load all digest and cipher algorithms */
 180 #if OPENSSL_API_COMPAT < 0x10100000L
 181         OpenSSL_add_all_algorithms();
 182 #else
 183         /* As of version 1.1.0 OpenSSL will automatically allocate
 184          * all resources that it needs so no explicit initialisation
 185          * is required. Similarly it will also automatically
 186          * deinitialise as required. */
 187         /* OPENSSL_init_crypto(); */
 188 #endif
 189 #if OPENSSL_API_COMPAT < 0x10100000L
 190         OPENSSL_config(NULL);
 191 #else
 192 #endif
 193         /* TODO :remove this after debug */
 194         DBG("init openssl");
 195         return;
 196 }
 197
 198 static void deinit_openssl(void)
 199 {
 200 #if OPENSSL_API_COMPAT < 0x10100000L
 201         EVP_cleanup();
 202 #else
 203 #endif
 204 #if OPENSSL_API_COMPAT < 0x10100000L
 205         ERR_free_strings();
 206 #else
 207 #endif
 208         return;
 209 }
 210
 211 static int print_openssl_error_cb(const char *str, size_t len, void *u)
 212 {
 213         connman_error("%s", str);
 214         return 0;
 215 }
 216
 217 static void print_openssl_error()
 218 {
 219         ERR_print_errors_cb(print_openssl_error_cb, NULL);
 220         return;
 221 }
 222
 223 static int get_cert_type(const char *path)
 224 {
 225         char *down_str = NULL;
 226         int cert_type;
 227
 228         down_str = g_ascii_strdown(path, strlen(path));
 229         if (!down_str)
 230                 return CERT_TYPE_NONE;
 231
 232         if(g_str_has_suffix(down_str, ".pem"))
 233                 cert_type = CERT_TYPE_PEM;
 234         else if (g_str_has_suffix(down_str, ".der") || g_str_has_suffix(down_str, ".crt"))
 235                 cert_type = CERT_TYPE_DER;
 236         else if (g_str_has_suffix(down_str, ".p12") || g_str_has_suffix(down_str, ".pfx"))
 237                 cert_type = CERT_TYPE_PKCS12;
 238         else
 239                 cert_type = CERT_TYPE_NONE;
 240         g_free(down_str);
 241
 242         return cert_type;
 243 }
 244
 245 static void read_der_file(const char *path, X509 **cert)
 246 {
 247         FILE *fp = NULL;
 248
 249         DBG("der path %s\n", path);
 250         fp = fopen(path, "r");
 251         *cert = d2i_X509_fp(fp, NULL);
 252         fclose(fp);
 253         return;
 254 }
 255
 256 static void read_pem_file(const char *path, X509 **cert)
 257 {
 258         FILE *fp = NULL;
 259
 260         DBG("pem path %s\n", path);
 261         fp = fopen(path, "r");
 262         *cert = PEM_read_X509(fp, cert, NULL, NULL);
 263         fclose(fp);
 264         return;
 265 }
 266
 267 static void read_pkcs12_file(const char *path, const char *pass, EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
 268 {
 269         FILE *fp = NULL;
 270         PKCS12 *p12;
 271
 272         DBG("pkcs12 path %s\n", path);
 273         fp = fopen(path, "r");
 274
 275         p12 = d2i_PKCS12_fp(fp, NULL);
 276         if (!p12) {
 277                 print_openssl_error();
 278                 fclose(fp);
 279                 return;
 280         }
 281
 282         if (!PKCS12_parse(p12, pass, pkey, cert, ca)) {
 283                 print_openssl_error();
 284                 fclose(fp);
 285                 return;
 286         }
 287
 288         PKCS12_free(p12);
 289         return;
 290 }
 291
 292 static char *get_private_key_str(struct openssl_private_data *data)
 293 {
 294         EVP_PKEY *pkey;
 295         BIO* bio;
 296         BUF_MEM *buf_ptr;
 297         char *private_key_str = NULL;
 298
 299         if (!data)
 300                 return NULL;
 301
 302         if (!(pkey = data->private_key))
 303                 return NULL;
 304
 305         bio = BIO_new(BIO_s_mem());
 306         if (!bio) {
 307                 print_openssl_error();
 308                 return NULL;
 309         }
 310
 311         if (!PEM_write_bio_PrivateKey(bio, pkey, NULL, NULL, 0, NULL, NULL)) {
 312                 print_openssl_error();
 313                 BIO_free(bio);
 314                 return NULL;
 315         }
 316
 317         BIO_get_mem_ptr(bio, &buf_ptr);
 318         if (!buf_ptr) {
 319                 print_openssl_error();
 320                 BIO_free(bio);
 321                 return NULL;
 322         }
 323
 324         private_key_str = g_try_malloc0(buf_ptr->length + 1);
 325         if (!private_key_str) {
 326                 print_openssl_error();
 327                 BIO_free(bio);
 328                 return NULL;
 329         }
 330
 331         g_strlcpy(private_key_str, buf_ptr->data, buf_ptr->length);
 332
 333         BIO_free(bio);
 334
 335         return private_key_str;
 336 }
 337
 338 static char *get_cert_str(X509 *cert)
 339 {
 340         BIO* bio;
 341         BUF_MEM *buf_ptr;
 342         char *cert_str = NULL;
 343
 344         if (!cert)
 345                 return NULL;
 346
 347         bio = BIO_new(BIO_s_mem());
 348         if (!bio) {
 349                 print_openssl_error();
 350                 return NULL;
 351         }
 352
 353         if (!PEM_write_bio_X509_AUX(bio, cert)) {
 354                 print_openssl_error();
 355                 BIO_free(bio);
 356                 return NULL;
 357         }
 358
 359         BIO_get_mem_ptr(bio, &buf_ptr);
 360         if (!buf_ptr) {
 361                 print_openssl_error();
 362                 BIO_free(bio);
 363                 return NULL;
 364         }
 365
 366         cert_str = g_try_malloc0(buf_ptr->length + 1);
 367         if (!cert_str) {
 368                 print_openssl_error();
 369                 BIO_free(bio);
 370                 return NULL;
 371         }
 372
 373         g_strlcpy(cert_str, buf_ptr->data, buf_ptr->length);
 374
 375         BIO_free(bio);
 376         return cert_str;
 377 }
 378
 379 static char * get_local_cert_str(struct openssl_private_data *data)
 380 {
 381         if (!data)
 382                 return NULL;
 383
 384         if (!(data->local_cert))
 385                 return NULL;
 386
 387         return get_cert_str(data->local_cert);
 388 }
 389
 390 int get_ca_cert_num(struct openssl_private_data *data)
 391 {
 392         if(!data || !data->ca_certs)
 393                 return 0;
 394
 395         return sk_X509_num(data->ca_certs);
 396 }
 397
 398 static char * get_nth_ca_cert_str(struct openssl_private_data *data, int num)
 399 {
 400         X509 *cert = NULL;
 401
 402         if (!data)
 403                 return NULL;
 404
 405         if (!(data->ca_certs))
 406                 return NULL;
 407
 408         cert = sk_X509_value(data->ca_certs, num);
 409
 410         return get_cert_str(cert);
 411 }
 412
 413 static void extract_cert_info(const char *path, const char *pass, struct openssl_private_data *data)
 414 {
 415         if(!path || !data) {
 416                 /* TODO :remove this after debug */
 417                 DBG("there's no cert data");
 418                 return;
 419         }
 420
 421         switch (get_cert_type(path)) {
 422         case CERT_TYPE_DER:
 423                 read_der_file(path, &(data->local_cert));
 424                 break;
 425         case CERT_TYPE_PEM:
 426                 read_pem_file(path, &(data->local_cert));
 427                 break;
 428         case CERT_TYPE_PKCS12:
 429                 read_pkcs12_file(path, pass, &(data->private_key), &(data->local_cert), &(data->ca_certs));
 430                 break;
 431         default:
 432                 break;
 433         }
 434
 435         return;
 436 }
 437
 438 static void free_openssl_private_data(struct openssl_private_data *data)
 439 {
 440         if (!data)
 441                 return;
 442
 443         EVP_PKEY *private_key = data->private_key;
 444         X509 *local_cert = data->local_cert;
 445         STACK_OF(X509) *ca_certs = data->ca_certs;
 446
 447         if (private_key)
 448                 EVP_PKEY_free(private_key);
 449
 450         if (local_cert)
 451                 X509_free(local_cert);
 452
 453         if (ca_certs)
 454                 sk_X509_pop_free(ca_certs, X509_free);
 455
 456         return;
 457 }
 458
 459 static void free_private_data(struct ipsec_private_data *data)
 460 {
 461         free_openssl_private_data(&(data->openssl_data));
 462         deinit_openssl();
 463         g_free(data);
 464 }
 465
 466 static int ipsec_notify(DBusMessage *msg, struct vpn_provider *provider)
 467 {
 468         return 0;
 469 }
 470
 471 static int ipsec_is_same_auth(const char* req, const char* target)
 472 {
 473         if (req == NULL || target == NULL)
 474                 return 0;
 475         return (g_strcmp0(req, target) == 0);
 476 }
 477
 478 static int vici_load_cert(const char* type, const char* flag, const char* data)
 479 {
 480         VICISection *sect;
 481         int ret = 0;
 482
 483         sect = vici_create_section(NULL);
 484         if (!sect)
 485                 return -ENOMEM;
 486
 487         vici_add_kv(sect, "type", type, NULL);
 488         vici_add_kv(sect, "flag", flag, NULL);
 489         vici_add_kv(sect, "data", data, NULL);
 490
 491         ret = vici_send_request(vici_client, VICI_CMD_LOAD_CERT, sect);
 492         if (ret < 0)
 493                 connman_error("vici_send_request failed");
 494
 495         vici_destroy_section(sect);
 496
 497         return ret;
 498 }
 499
 500 static int vici_load_key(const char* type, const char* data)
 501 {
 502         VICISection *sect;
 503         sect = vici_create_section(NULL);
 504         int ret = 0;
 505
 506         vici_add_kv(sect, "type", type, NULL);
 507         vici_add_kv(sect, "data", data, NULL);
 508         ret = vici_send_request(vici_client, VICI_CMD_LOAD_KEY, sect);
 509         if (ret < 0)
 510                 connman_error("vici_send_request failed");
 511
 512         vici_destroy_section(sect);
 513
 514         return ret;
 515 }
 516
 517 static void ipsec_add_default_child_sa_data(struct vpn_provider *provider, VICISection *child)
 518 {
 519         const char *version = vpn_provider_get_string(provider, "IPsec.Version");
 520         if (g_strcmp0(version, "1") == 0) {
 521                 int i = 0;
 522                 GSList *list;
 523
 524                 for (list = NULL; ikev1_esp_proposals[i] != NULL; i++)
 525                         list = g_slist_append(list, g_strdup(ikev1_esp_proposals[i]));
 526                 vici_add_list(child, "esp_proposals", list, "net");
 527                 list = NULL;
 528         } else {
 529                 vici_add_kvl(child, "esp_proposals", ikev2_esp_proposals, "net");
 530         }
 531         return;
 532 }
 533
 534 static void ipsec_add_default_conn_data(struct vpn_provider *provider, VICISection *conn)
 535 {
 536         const char *version = vpn_provider_get_string(provider, "IPsec.Version");
 537         if (g_strcmp0(version, "1") == 0) {
 538                 int i = 0;
 539                 GSList *list;
 540
 541                 for (list = NULL; ikev1_proposals[i] != NULL; i++)
 542                         list = g_slist_append(list, g_strdup(ikev1_proposals[i]));
 543                 vici_add_list(conn, "proposals", list, NULL);
 544                 list = NULL;
 545
 546                 if (g_strcmp0(vpn_provider_get_string(provider, "IPsec.LocalAuth"), "psk") == 0)
 547                         vici_add_kv(conn, "aggressive", "yes", NULL);
 548
 549         } else {
 550                 vici_add_kvl(conn, "proposals", ikev2_proposals, NULL);
 551         }
 552
 553         vici_add_kvl(conn, "vips", "0.0.0.0", NULL);
 554         return;
 555 }
 556
 557
 558 static int ipsec_load_conn(struct vpn_provider *provider, struct ipsec_private_data *data)
 559 {
 560         const char *key;
 561         const char *value;
 562         const char *subsection;
 563         char *local_cert_str;
 564         VICISection *conn;
 565         VICISection *children;
 566         int i;
 567         int ret = 0;
 568
 569         if (!provider || !data) {
 570                 connman_error("invalid provider or data");
 571                 return -EINVAL;
 572         }
 573
 574         value = vpn_provider_get_string(provider, "Name");
 575         DBG("Name: %s", value);
 576         conn = vici_create_section(value);
 577         children = vici_create_section("children");
 578         add_subsection("children", children, conn);
 579
 580         for (i = 0; i < (int)ARRAY_SIZE(ipsec_conn_options); i++) {
 581                 value = vpn_provider_get_string(provider, ipsec_conn_options[i].cm_opt);
 582                 if (!value)
 583                         continue;
 584
 585                 key = ipsec_conn_options[i].vici_key;
 586                 subsection = ipsec_conn_options[i].subsection;
 587                 ipsec_conn_options[i].add_elem(conn, key, value, subsection);
 588         }
 589
 590         local_cert_str = get_local_cert_str(&(data->openssl_data));
 591         if (local_cert_str) {
 592                 /* TODO :remove this after debug */
 593                 DBG("There's local certification to add local section");
 594                 vici_add_kvl(conn, "certs", local_cert_str, "local");
 595                 g_free(local_cert_str);
 596         }
 597
 598         ipsec_add_default_conn_data(provider, conn);
 599         ipsec_add_default_child_sa_data(provider, children);
 600
 601         ret = vici_send_request(vici_client, VICI_CMD_LOAD_CONN, conn);
 602         if (ret < 0)
 603                 connman_error("vici_send_request failed");
 604
 605         vici_destroy_section(conn);
 606
 607         return ret;
 608 }
 609
 610 static int ipsec_load_private_data(struct ipsec_private_data *data)
 611 {
 612         char *private_key_str;
 613         char *ca_cert_str;
 614         int ca_cert_num;
 615         int i;
 616         int ret = 0;
 617
 618         private_key_str = get_private_key_str(&(data->openssl_data));
 619         if (private_key_str) {
 620                 /* TODO :remove this after debug */
 621                 DBG("load private key");
 622                 ret = vici_load_key("RSA", private_key_str);
 623                 g_free(private_key_str);
 624         }
 625
 626         if (ret < 0)
 627                 return ret;
 628
 629         ca_cert_num = get_ca_cert_num(&(data->openssl_data));
 630         if (ca_cert_num < 1)
 631                 return 0;
 632
 633         for (i = 0; i < ca_cert_num; i++) {
 634                 /* TODO :remove this after debug */
 635                 DBG("load CA cert");
 636                 ca_cert_str = get_nth_ca_cert_str(&(data->openssl_data), i);
 637                 ret = vici_load_cert("X509", "CA", ca_cert_str);
 638                 g_free(ca_cert_str);
 639                 if (ret < 0)
 640                         return ret;
 641         }
 642
 643         return ret;
 644 }
 645
 646 static int ipsec_load_shared_psk(struct vpn_provider *provider)
 647 {
 648         const char *data;
 649         const char *owner;
 650         VICISection *sect;
 651         int ret = 0;
 652
 653         if (!provider) {
 654                 connman_error("invalid provider");
 655                 ret = -EINVAL;
 656         }
 657
 658         data = vpn_provider_get_string(provider, "IPsec.IKEData");
 659         owner = vpn_provider_get_string(provider, "IPsec.IKEOwners");
 660         DBG("IKEData: %s, IKEOwners: %s", data, owner);
 661
 662         if (!data)
 663                 return 0;
 664
 665         sect = vici_create_section(NULL);
 666         if (!sect) {
 667                 return -ENOMEM;
 668         }
 669
 670         vici_add_kv(sect, "type", VICI_SHARED_TYPE_PSK, NULL);
 671         vici_add_kv(sect, "data", data, NULL);
 672         vici_add_kvl(sect, "owners", owner, NULL);
 673
 674         ret = vici_send_request(vici_client, VICI_CMD_LOAD_SHARED, sect);
 675         if (ret < 0)
 676                 connman_error("vici_send_request failed");
 677
 678         vici_destroy_section(sect);
 679
 680         return ret;
 681 }
 682
 683 static int ipsec_load_shared_xauth(struct vpn_provider *provider)
 684 {
 685         const char *data;
 686         const char *owner;
 687         VICISection *sect;
 688         int ret = 0;
 689
 690         if (!provider) {
 691                 connman_error("invalid provider");
 692                 return -EINVAL;
 693         }
 694
 695         data = vpn_provider_get_string(provider, "IPsec.XauthData");
 696         owner = vpn_provider_get_string(provider, "IPsec.XauthOwners");
 697         DBG("XauthData: %s, XauthOwners: %s", data, owner);
 698
 699         if (!data)
 700                 return 0;
 701
 702         sect = vici_create_section(NULL);
 703
 704         vici_add_kv(sect, "type", VICI_SHARED_TYPE_XAUTH, NULL);
 705         vici_add_kv(sect, "data", data, NULL);
 706         vici_add_kvl(sect, "owners", owner, NULL);
 707
 708         ret = vici_send_request(vici_client, VICI_CMD_LOAD_SHARED, sect);
 709         if (ret < 0)
 710                 connman_error("vici_send_request failed");
 711
 712         vici_destroy_section(sect);
 713
 714         return ret;
 715 }
 716
 717 static char *load_file_from_path(const char *path)
 718 {
 719         struct stat st;
 720         FILE *fp = NULL;
 721         int fd = 0;
 722         size_t  file_size = 0;
 723         char *file_buff = NULL;
 724
 725         if (path) {
 726                 connman_error("File path is NULL\n");
 727                 return NULL;
 728         }
 729
 730         fp = fopen(path, "rb");
 731         if (!fp) {
 732                 connman_error("fopen %s is failed\n", path);
 733                 return NULL;
 734         }
 735
 736         fd = fileno(fp);
 737         fstat(fd, &st);
 738         file_size = st.st_size;
 739         file_buff = g_try_malloc0(sizeof(char)*st.st_size);
 740         if (file_buff == NULL) {
 741                 connman_error("g_try_malloc0 failed\n");
 742                 fclose(fp);
 743                 return NULL;
 744         }
 745
 746         if (fread(file_buff, 1, file_size, fp) != file_size) {
 747                 connman_error("file size not matched\n");
 748                 g_free(file_buff);
 749                 file_buff = NULL;
 750         }
 751
 752         fclose(fp);
 753         return file_buff;
 754 }
 755
 756 static int ipsec_load_key(struct vpn_provider *provider)
 757 {
 758         const char *type;
 759         const char *path;
 760         char *data;
 761         VICISection *sect;
 762         int ret = 0;
 763
 764         if (!provider) {
 765                 connman_error("invalid provider");
 766                 return -EINVAL;
 767         }
 768
 769         type = vpn_provider_get_string(provider, "IPsec.PKeyType");
 770         path = vpn_provider_get_string(provider, "IPsec.PKeyData");
 771         DBG("PKeyType: %s, PKeyData: %s", type, path);
 772
 773         if (!type || !path)
 774                 return 0;
 775
 776         data = load_file_from_path(path);
 777         if (!data)
 778                 return 0;
 779
 780         sect = vici_create_section(NULL);
 781         if (!sect)
 782                 return -ENOMEM;
 783
 784         vici_add_kv(sect, "type", type, NULL);
 785         vici_add_kv(sect, "data", data, NULL);
 786
 787         ret = vici_send_request(vici_client, VICI_CMD_LOAD_KEY, sect);
 788         if (ret < 0)
 789                 connman_error("vici_send_request failed");
 790
 791         vici_destroy_section(sect);
 792         g_free(data);
 793
 794         return ret;
 795 }
 796
 797 static int ipsec_initiate(struct vpn_provider *provider)
 798 {
 799         VICISection *sect;
 800         int ret = 0;
 801
 802         sect = vici_create_section(NULL);
 803         if (!sect)
 804                 return -ENOMEM;
 805
 806         vici_add_kv(sect, "child", "net", NULL);
 807         ret = vici_send_request(vici_client, VICI_CMD_INITIATE, sect);
 808         if (ret < 0)
 809                 connman_error("vici_send_request failed");
 810
 811         vici_destroy_section(sect);
 812
 813         return ret;
 814 }
 815
 816 static int ipsec_load_cert(struct vpn_provider *provider)
 817 {
 818         const char *type;
 819         const char *flag;
 820         char *data;
 821         const char *local_auth_type;
 822         const char *remote_auth_type;
 823         int ret = 0;
 824
 825         if (!provider) {
 826                 connman_error("invalid provider");
 827                 return -EINVAL;
 828         }
 829
 830         local_auth_type = vpn_provider_get_string(provider, "IPsec.LocalAuth");
 831         remote_auth_type = vpn_provider_get_string(provider, "IPsec.RemoteAuth");
 832         if (!ipsec_is_same_auth(local_auth_type, "pubkey") &&
 833                         !ipsec_is_same_auth(remote_auth_type, "pubkey")) {
 834                 DBG("invalid auth type");
 835                 return 0;
 836         }
 837
 838         type = vpn_provider_get_string(provider, "IPsec.CertType");
 839         flag = vpn_provider_get_string(provider, "IPsec.CertFlag");
 840         data = load_file_from_path(vpn_provider_get_string(provider, "IPsec.CertData"));
 841         DBG("CertType: %s, CertFalg: %s,CertData: %s", type, flag, data);
 842         if (!type || ! flag || !data) {
 843                 connman_error("invalid certification information");
 844                 return -EINVAL;
 845         }
 846
 847         ret = vici_load_cert(type, flag, data);
 848         if (ret < 0)
 849                 connman_error("failed to load cert");
 850
 851         g_free(data);
 852
 853         return ret;
 854 }
 855
 856 void connect_reply_cb(int err, void *user_data)
 857 {
 858         struct ipsec_private_data *data;
 859
 860         data = (struct ipsec_private_data *)user_data;
 861         data->cb(data->provider, data->user_data, err);
 862
 863         free_private_data(data);
 864 }
 865
 866 static struct ipsec_private_data* create_ipsec_private_data(struct vpn_provider *provider,
 867                 vpn_provider_connect_cb_t cb, void* user_data)
 868 {
 869         struct ipsec_private_data *data;
 870         data = g_try_new0(struct ipsec_private_data, 1);
 871         if (!data) {
 872                 connman_error("out of memory");
 873                 return NULL;
 874         }
 875
 876         init_openssl();
 877
 878         data->provider = provider;
 879         data->cb = cb;
 880         data->user_data = user_data;
 881         return data;
 882 }
 883
 884 static void vici_connect(struct ipsec_private_data *data)
 885 {
 886         struct vpn_provider *provider = NULL;
 887         vpn_provider_connect_cb_t cb = NULL;
 888         int err = 0;
 889
 890         if (!data)
 891                 IPSEC_ERROR_CHECK_GOTO(-1, done, "Invalid data parameter");
 892
 893         provider = data->provider;
 894         cb = data->cb;
 895         if (!provider || !cb)
 896                 IPSEC_ERROR_CHECK_GOTO(-1, done, "Invalid provider or callback");
 897
 898         DBG("data %p, provider %p", data, provider);
 899
 900         /*
 901          * Initialize vici client
 902          */
 903         err = vici_initialize(&vici_client);
 904         IPSEC_ERROR_CHECK_GOTO(err, done, "failed to initialize vici_client");
 905
 906         /* TODO :remove this after debug */
 907         DBG("success to initialize vici socket");
 908
 909         vici_set_connect_reply_cb(vici_client, (vici_connect_reply_cb)connect_reply_cb, data);
 910
 911         /*
 912          * Send the load-conn command
 913          */
 914         err = ipsec_load_conn(provider, data);
 915         IPSEC_ERROR_CHECK_GOTO(err, done, "load-conn failed");
 916
 917         /* TODO :remove this after debug */
 918         DBG("success to ipsec_load_conn");
 919
 920         err = ipsec_load_private_data(data);
 921         IPSEC_ERROR_CHECK_GOTO(err, done, "load private data failed");
 922
 923         /* TODO :remove this after debug */
 924         DBG("success to ipsec_load_private_data");
 925
 926         /*
 927          * Send the load-shared command for PSK
 928          */
 929         err = ipsec_load_shared_psk(provider);
 930         IPSEC_ERROR_CHECK_GOTO(err, done, "load-shared failed");
 931
 932         /* TODO :remove this after debug */
 933         DBG("success to ipsec_load_shared_psk");
 934
 935         /*
 936          * Send the load-shared command for XAUTH
 937          */
 938         err = ipsec_load_shared_xauth(provider);
 939         IPSEC_ERROR_CHECK_GOTO(err, done, "load-shared failed");
 940
 941         /* TODO :remove this after debug */
 942         DBG("success to ipsec_load_shared_xauth");
 943         /*
 944          * Send the load-cert command
 945          */
 946         err = ipsec_load_cert(provider);
 947         IPSEC_ERROR_CHECK_GOTO(err, done, "load-cert failed");
 948
 949         /* TODO :remove this after debug */
 950         DBG("success to ipsec_load_cert");
 951
 952         /*
 953          * Send the load-key command
 954          */
 955         err = ipsec_load_key(provider);
 956         IPSEC_ERROR_CHECK_GOTO(err, done, "load-key failed");
 957
 958         /* TODO :remove this after debug */
 959         DBG("success to ipsec_load_cert");
 960         /*
 961          * Send the initiate command
 962          */
 963         err = ipsec_initiate(provider);
 964         IPSEC_ERROR_CHECK_GOTO(err, done, "initiate failed");
 965
 966         /* TODO :remove this after debug */
 967         DBG("success to ipsec_initiate");
 968
 969 done:
 970         /* refer to connect_cb on vpn-provider.c for cb */
 971         if(err != 0 && cb)
 972                 cb(provider, data->user_data, -err);
 973
 974         return;
 975 }
 976
 977 static void monitor_changed(GFileMonitor *monitor, GFile *file, GFile *other_file,
 978                 GFileMonitorEvent  event_type, gpointer user_data)
 979 {
 980         DBG("file %s", g_file_get_path(file));
 981         if (event_type == G_FILE_MONITOR_EVENT_CREATED) {
 982                 if (g_file_test(VICI_DEFAULT_URI, G_FILE_TEST_EXISTS)) {
 983                         DBG("file created: %s", VICI_DEFAULT_URI);
 984                         struct ipsec_private_data *data = user_data;
 985                         vici_connect(data);
 986                         g_object_unref(monitor);
 987                 }
 988         }
 989 }
 990
 991 static void monitor_vici_socket(struct ipsec_private_data *data)
 992 {
 993         GError *error = NULL;
 994         GFile* file;
 995
 996         file = g_file_new_for_path(VICI_DEFAULT_URI);
 997         monitor = g_file_monitor_file(file, G_FILE_MONITOR_SEND_MOVED, NULL, &error);
 998         if (error) {
 999                 connman_error("g_file_monitor_directory failed: %s / %d", error->message, error->code);
1000                 g_error_free(error);
1001                 return;
1002         }
1003         /* TODO :remove this after debug */
1004         DBG("starting to monitor vici socket");
1005         g_signal_connect(monitor, "changed", G_CALLBACK(monitor_changed), data);
1006         g_object_unref(file);
1007 }
1008
1009 static void check_vici_socket(struct ipsec_private_data *data)
1010 {
1011         DBG("data %p", data);
1012         if (g_file_test(VICI_DEFAULT_URI, G_FILE_TEST_EXISTS)) {
1013                 DBG("file exists: %s", VICI_DEFAULT_URI);
1014                 vici_connect(data);
1015         } else {
1016                 monitor_vici_socket(data);
1017         }
1018 }
1019
1020 static int ipsec_connect(struct vpn_provider *provider,
1021                         struct connman_task *task, const char *if_name,
1022                         vpn_provider_connect_cb_t cb, const char *dbus_sender,
1023                         void *user_data)
1024 {
1025         struct ipsec_private_data *data;
1026         const char *path;
1027         const char *pass;
1028         int err = 0;
1029
1030         data = create_ipsec_private_data(provider, cb, user_data);
1031         if (!data) {
1032                 connman_error("create ipsec private data failed");
1033                 return -ENOMEM;
1034         }
1035         /*
1036          * Start charon daemon using ipsec script of strongSwan.
1037          */
1038         err = connman_task_run(task, vpn_died, provider, NULL, NULL, NULL);
1039         if (err < 0) {
1040                 connman_error("charon start failed");
1041                 if (cb)
1042                         cb(provider, user_data, err);
1043                 return err;
1044         }
1045
1046         path = vpn_provider_get_string(provider, "IPsec.LocalCerts");
1047         pass = vpn_provider_get_string(provider, "IPsec.LocalCertPass");
1048         extract_cert_info(path, pass, &(data->openssl_data));
1049
1050         check_vici_socket(data);
1051 //      g_usleep(G_USEC_PER_SEC);
1052
1053         return err;
1054 }
1055
1056 static int ipsec_error_code(struct vpn_provider *provider, int exit_code)
1057 {
1058         return 0;
1059 }
1060
1061 static int ipsec_save(struct vpn_provider *provider, GKeyFile *keyfile)
1062 {
1063         int i;
1064         const char *option;
1065
1066         DBG("");
1067         /*
1068          * Save IKE connection configurations
1069          */
1070         for (i = 0; i < (int)ARRAY_SIZE(ipsec_conn_options); i++) {
1071                 option = vpn_provider_get_string(provider, ipsec_conn_options[i].cm_opt);
1072                 if (option)
1073                         g_key_file_set_string(keyfile,
1074                                         vpn_provider_get_save_group(provider),
1075                                         ipsec_conn_options[i].cm_opt,
1076                                         option);
1077         }
1078
1079         /*
1080          * Save shared IKE PSK, EAP or XAUTH secret
1081          */
1082         for (i = 0; i < (int)ARRAY_SIZE(ipsec_shared_options); i++) {
1083                 option = vpn_provider_get_string(provider, ipsec_shared_options[i].cm_opt);
1084                 if (option)
1085                         g_key_file_set_string(keyfile,
1086                                         vpn_provider_get_save_group(provider),
1087                                         ipsec_shared_options[i].cm_opt,
1088                                         option);
1089         }
1090
1091         /*
1092          * Save certification
1093          */
1094         for (i = 0; i < (int)ARRAY_SIZE(ipsec_cert_options); i++) {
1095                 option = vpn_provider_get_string(provider, ipsec_cert_options[i].cm_opt);
1096                 if (option)
1097                         g_key_file_set_string(keyfile,
1098                                         vpn_provider_get_save_group(provider),
1099                                         ipsec_cert_options[i].cm_opt,
1100                                         option);
1101         }
1102
1103         /*
1104          * Save private key
1105          */
1106         for (i = 0; i < (int)ARRAY_SIZE(ipsec_pkey_options); i++) {
1107                 option = vpn_provider_get_string(provider, ipsec_pkey_options[i].cm_opt);
1108                 if (option)
1109                         g_key_file_set_string(keyfile,
1110                                         vpn_provider_get_save_group(provider),
1111                                         ipsec_pkey_options[i].cm_opt,
1112                                         option);
1113         }
1114
1115         /*
1116          * Save local certification
1117          */
1118         option = vpn_provider_get_string(provider, "IPsec.LocalCerts");
1119         if (option)
1120                 g_key_file_set_string(keyfile,
1121                                 vpn_provider_get_save_group(provider),
1122                                 "IPsec.LocalCerts",
1123                                 option);
1124         option = vpn_provider_get_string(provider, "IPsec.LocalCertPass");
1125         if (option)
1126                 g_key_file_set_string(keyfile,
1127                                 vpn_provider_get_save_group(provider),
1128                                 "IPsec.LocalCertPass",
1129                                 option);
1130         /*
1131          * Save CA certification directory
1132          */
1133         option = vpn_provider_get_string(provider, "IPsec.CACertsDir");
1134         if (option)
1135                 g_key_file_set_string(keyfile,
1136                                 vpn_provider_get_save_group(provider),
1137                                 "IPsec.CACertsDir",
1138                                 option);
1139
1140         return 0;
1141 }
1142
1143 static void ipsec_disconnect(struct vpn_provider *provider)
1144 {
1145         int err = 0;
1146
1147         err = vici_deinitialize(vici_client);
1148         IPSEC_ERROR_CHECK_RETURN(err, "failed to deinitialize vici_client");
1149 }
1150
1151 static struct vpn_driver vpn_driver = {
1152         .flags = VPN_FLAG_NO_TUN,
1153         .notify = ipsec_notify,
1154         .connect = ipsec_connect,
1155         .error_code = ipsec_error_code,
1156         .save = ipsec_save,
1157         .disconnect = ipsec_disconnect,
1158 };
1159
1160 static int ipsec_init(void)
1161 {
1162         connection = connman_dbus_get_connection();
1163
1164         return vpn_register("ipsec", &vpn_driver, IPSEC);
1165 }
1166
1167 static void ipsec_exit(void)
1168 {
1169         vpn_unregister("ipsec");
1170
1171         dbus_connection_unref(connection);
1172 }
1173
1174 CONNMAN_PLUGIN_DEFINE(ipsec, "IPSec plugin", VERSION,
1175         CONNMAN_PLUGIN_PRIORITY_DEFAULT, ipsec_init, ipsec_exit)