/mandos/release : revision 237.16.10

85

raise() */

86

#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,

87

EX_NOHOST, EX_IOERR, EX_PROTOCOL */

88

#include <sys/wait.h> /* waitpid(), WIFEXITED(),

89

WEXITSTATUS(), WTERMSIG() */

88

90

89

91

#ifdef __linux__

90

92

#include <sys/klog.h> /* klogctl() */

108

110

init_gnutls_session(),

109

111

GNUTLS_* */

110

112

#include <gnutls/openpgp.h>

111

/* gnutls_certificate_set_openpgp_key_file(),

112

GNUTLS_OPENPGP_FMT_BASE64 */

113

/* gnutls_certificate_set_openpgp_key_file(),

114

GNUTLS_OPENPGP_FMT_BASE64 */

113

115

114

116

/* GPGME */

115

117

#include <gpgme.h> /* All GPGME types, constants and

131

133

const char *argp_program_bug_address = "<mandos@recompile.se>";

132

134

static const char sys_class_net[] = "/sys/class/net";

133

135

char *connect_to = NULL;

136

const char *hookdir = HOOKDIR;

134

137

135

138

/* Doubly linked list that need to be circularly linked when used */

136

139

typedef struct server{

171

174

perror(print_text);

172

175

}

173

176

177

int fprintf_plus(FILE *stream, const char *format, ...){

178

va_list ap;

179

va_start (ap, format);

180

181

TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",

182

program_invocation_short_name));

183

return TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));

184

}

185

174

186

/*

175

187

* Make additional room in "buffer" for at least BUFFER_SIZE more

176

188

* bytes. "buffer_capacity" is how much is currently allocated,

177

189

* "buffer_length" is how much is already used.

178

190

*/

179

191

size_t incbuffer(char **buffer, size_t buffer_length,

180

size_t buffer_capacity){

192

size_t buffer_capacity){

181

193

if(buffer_length + BUFFER_SIZE > buffer_capacity){

182

194

*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);

183

195

if(buffer == NULL){

189

201

}

190

202

191

203

/* Add server to set of servers to retry periodically */

192

int add_server(const char *ip, uint16_t port,

193

AvahiIfIndex if_index,

194

int af){

204

int add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,

205

int af){

195

206

int ret;

196

207

server *new_server = malloc(sizeof(server));

197

208

if(new_server == NULL){

199

210

return -1;

200

211

}

201

212

*new_server = (server){ .ip = strdup(ip),

202

.port = port,

203

.if_index = if_index,

204

.af = af };

213

.port = port,

214

.if_index = if_index,

215

.af = af };

205

216

if(new_server->ip == NULL){

206

217

perror_plus("strdup");

207

218

return -1;

229

240

/*

230

241

* Initialize GPGME.

231

242

*/

232

static bool init_gpgme(const char *seckey,

233

const char *pubkey, const char *tempdir){

243

static bool init_gpgme(const char *seckey, const char *pubkey,

244

const char *tempdir){

234

245

gpgme_error_t rc;

235

246

gpgme_engine_info_t engine_info;

236

247

251

262

252

263

rc = gpgme_data_new_from_fd(&pgp_data, fd);

253

264

if(rc != GPG_ERR_NO_ERROR){

254

fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",

255

gpgme_strsource(rc), gpgme_strerror(rc));

265

fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",

266

gpgme_strsource(rc), gpgme_strerror(rc));

256

267

return false;

257

268

}

258

269

259

270

rc = gpgme_op_import(mc.ctx, pgp_data);

260

271

if(rc != GPG_ERR_NO_ERROR){

261

fprintf(stderr, "bad gpgme_op_import: %s: %s\n",

262

gpgme_strsource(rc), gpgme_strerror(rc));

272

fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",

273

gpgme_strsource(rc), gpgme_strerror(rc));

263

274

return false;

264

275

}

265

276

272

283

}

273

284

274

285

if(debug){

275

fprintf(stderr, "Initializing GPGME\n");

286

fprintf_plus(stderr, "Initializing GPGME\n");

276

287

}

277

288

278

289

/* Init GPGME */

279

290

gpgme_check_version(NULL);

280

291

rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);

281

292

if(rc != GPG_ERR_NO_ERROR){

282

fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",

283

gpgme_strsource(rc), gpgme_strerror(rc));

293

fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",

294

gpgme_strsource(rc), gpgme_strerror(rc));

284

295

return false;

285

296

}

286

297

287

298

/* Set GPGME home directory for the OpenPGP engine only */

288

299

rc = gpgme_get_engine_info(&engine_info);

289

300

if(rc != GPG_ERR_NO_ERROR){

290

fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",

291

gpgme_strsource(rc), gpgme_strerror(rc));

301

fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",

302

gpgme_strsource(rc), gpgme_strerror(rc));

292

303

return false;

293

304

}

294

305

while(engine_info != NULL){

300

311

engine_info = engine_info->next;

301

312

}

302

313

if(engine_info == NULL){

303

fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);

314

fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",

315

tempdir);

304

316

return false;

305

317

}

306

318

307

319

/* Create new GPGME "context" */

308

320

rc = gpgme_new(&(mc.ctx));

309

321

if(rc != GPG_ERR_NO_ERROR){

310

fprintf(stderr, "bad gpgme_new: %s: %s\n",

311

gpgme_strsource(rc), gpgme_strerror(rc));

322

fprintf_plus(stderr, "Mandos plugin mandos-client: "

323

"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),

324

gpgme_strerror(rc));

312

325

return false;

313

326

}

314

327

333

346

ssize_t plaintext_length = 0;

334

347

335

348

if(debug){

336

fprintf(stderr, "Trying to decrypt OpenPGP data\n");

349

fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");

337

350

}

338

351

339

352

/* Create new GPGME data buffer from memory cryptotext */

340

353

rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,

341

354

0);

342

355

if(rc != GPG_ERR_NO_ERROR){

343

fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",

344

gpgme_strsource(rc), gpgme_strerror(rc));

356

fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",

357

gpgme_strsource(rc), gpgme_strerror(rc));

345

358

return -1;

346

359

}

347

360

348

361

/* Create new empty GPGME data buffer for the plaintext */

349

362

rc = gpgme_data_new(&dh_plain);

350

363

if(rc != GPG_ERR_NO_ERROR){

351

fprintf(stderr, "bad gpgme_data_new: %s: %s\n",

352

gpgme_strsource(rc), gpgme_strerror(rc));

364

fprintf_plus(stderr, "Mandos plugin mandos-client: "

365

"bad gpgme_data_new: %s: %s\n",

366

gpgme_strsource(rc), gpgme_strerror(rc));

353

367

gpgme_data_release(dh_crypto);

354

368

return -1;

355

369

}

358

372

data buffer */

359

373

rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);

360

374

if(rc != GPG_ERR_NO_ERROR){

361

fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",

362

gpgme_strsource(rc), gpgme_strerror(rc));

375

fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",

376

gpgme_strsource(rc), gpgme_strerror(rc));

363

377

plaintext_length = -1;

364

378

if(debug){

365

379

gpgme_decrypt_result_t result;

366

380

result = gpgme_op_decrypt_result(mc.ctx);

367

381

if(result == NULL){

368

fprintf(stderr, "gpgme_op_decrypt_result failed\n");

382

fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");

369

383

} else {

370

fprintf(stderr, "Unsupported algorithm: %s\n",

371

result->unsupported_algorithm);

372

fprintf(stderr, "Wrong key usage: %u\n",

373

result->wrong_key_usage);

384

fprintf_plus(stderr, "Unsupported algorithm: %s\n",

385

result->unsupported_algorithm);

386

fprintf_plus(stderr, "Wrong key usage: %u\n",

387

result->wrong_key_usage);

374

388

if(result->file_name != NULL){

375

fprintf(stderr, "File name: %s\n", result->file_name);

389

fprintf_plus(stderr, "File name: %s\n", result->file_name);

376

390

}

377

391

gpgme_recipient_t recipient;

378

392

recipient = result->recipients;

379

393

while(recipient != NULL){

380

fprintf(stderr, "Public key algorithm: %s\n",

381

gpgme_pubkey_algo_name(recipient->pubkey_algo));

382

fprintf(stderr, "Key ID: %s\n", recipient->keyid);

383

fprintf(stderr, "Secret key available: %s\n",

384

recipient->status == GPG_ERR_NO_SECKEY

385

? "No" : "Yes");

394

fprintf_plus(stderr, "Public key algorithm: %s\n",

395

gpgme_pubkey_algo_name

396

(recipient->pubkey_algo));

397

fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);

398

fprintf_plus(stderr, "Secret key available: %s\n",

399

recipient->status == GPG_ERR_NO_SECKEY

400

? "No" : "Yes");

386

401

recipient = recipient->next;

387

402

}

388

403

}

391

406

}

392

407

393

408

if(debug){

394

fprintf(stderr, "Decryption of OpenPGP data succeeded\n");

409

fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");

395

410

}

396

411

397

412

/* Seek back to the beginning of the GPGME plaintext data buffer */

404

419

*plaintext = NULL;

405

420

while(true){

406

421

plaintext_capacity = incbuffer(plaintext,

407

(size_t)plaintext_length,

408

plaintext_capacity);

422

(size_t)plaintext_length,

423

plaintext_capacity);

409

424

if(plaintext_capacity == 0){

410

perror_plus("incbuffer");

411

plaintext_length = -1;

412

goto decrypt_end;

425

perror_plus("incbuffer");

426

plaintext_length = -1;

427

goto decrypt_end;

413

428

}

414

429

415

430

ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,

428

443

}

429

444

430

445

if(debug){

431

fprintf(stderr, "Decrypted password is: ");

446

fprintf_plus(stderr, "Decrypted password is: ");

432

447

for(ssize_t i = 0; i < plaintext_length; i++){

433

448

fprintf(stderr, "%02hhX ", (*plaintext)[i]);

434

449

}

456

471

/* GnuTLS log function callback */

457

472

static void debuggnutls(__attribute__((unused)) int level,

458

473

const char* string){

459

fprintf(stderr, "GnuTLS: %s", string);

474

fprintf_plus(stderr, "GnuTLS: %s", string);

460

475

}

461

476

462

477

static int init_gnutls_global(const char *pubkeyfilename,

464

479

int ret;

465

480

466

481

if(debug){

467

fprintf(stderr, "Initializing GnuTLS\n");

482

fprintf_plus(stderr, "Initializing GnuTLS\n");

468

483

}

469

484

470

485

ret = gnutls_global_init();

471

486

if(ret != GNUTLS_E_SUCCESS){

472

fprintf(stderr, "GnuTLS global_init: %s\n",

473

safer_gnutls_strerror(ret));

487

fprintf_plus(stderr, "GnuTLS global_init: %s\n",

488

safer_gnutls_strerror(ret));

474

489

return -1;

475

490

}

476

491

485

500

/* OpenPGP credentials */

486

501

ret = gnutls_certificate_allocate_credentials(&mc.cred);

487

502

if(ret != GNUTLS_E_SUCCESS){

488

fprintf(stderr, "GnuTLS memory error: %s\n",

489

safer_gnutls_strerror(ret));

503

fprintf_plus(stderr, "GnuTLS memory error: %s\n",

504

safer_gnutls_strerror(ret));

490

505

gnutls_global_deinit();

491

506

return -1;

492

507

}

493

508

494

509

if(debug){

495

fprintf(stderr, "Attempting to use OpenPGP public key %s and"

496

" secret key %s as GnuTLS credentials\n", pubkeyfilename,

497

seckeyfilename);

510

fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"

511

" secret key %s as GnuTLS credentials\n",

512

pubkeyfilename,

513

seckeyfilename);

498

514

}

499

515

500

516

ret = gnutls_certificate_set_openpgp_key_file

501

517

(mc.cred, pubkeyfilename, seckeyfilename,

502

518

GNUTLS_OPENPGP_FMT_BASE64);

503

519

if(ret != GNUTLS_E_SUCCESS){

504

fprintf(stderr,

505

"Error[%d] while reading the OpenPGP key pair ('%s',"

506

" '%s')\n", ret, pubkeyfilename, seckeyfilename);

507

fprintf(stderr, "The GnuTLS error is: %s\n",

508

safer_gnutls_strerror(ret));

520

fprintf_plus(stderr,

521

"Error[%d] while reading the OpenPGP key pair ('%s',"

522

" '%s')\n", ret, pubkeyfilename, seckeyfilename);

523

fprintf_plus(stderr, "The GnuTLS error is: %s\n",

524

safer_gnutls_strerror(ret));

509

525

goto globalfail;

510

526

}

511

527

512

528

/* GnuTLS server initialization */

513

529

ret = gnutls_dh_params_init(&mc.dh_params);

514

530

if(ret != GNUTLS_E_SUCCESS){

515

fprintf(stderr, "Error in GnuTLS DH parameter initialization:"

516

" %s\n", safer_gnutls_strerror(ret));

531

fprintf_plus(stderr, "Error in GnuTLS DH parameter"

532

" initialization: %s\n",

533

safer_gnutls_strerror(ret));

517

534

goto globalfail;

518

535

}

519

536

ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);

520

537

if(ret != GNUTLS_E_SUCCESS){

521

fprintf(stderr, "Error in GnuTLS prime generation: %s\n",

522

safer_gnutls_strerror(ret));

538

fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",

539

safer_gnutls_strerror(ret));

523

540

goto globalfail;

524

541

}

525

542

545

562

}

546

563

} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);

547

564

if(ret != GNUTLS_E_SUCCESS){

548

fprintf(stderr, "Error in GnuTLS session initialization: %s\n",

549

safer_gnutls_strerror(ret));

565

fprintf_plus(stderr,

566

"Error in GnuTLS session initialization: %s\n",

567

safer_gnutls_strerror(ret));

550

568

}

551

569

552

570

{

559

577

}

560

578

} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);

561

579

if(ret != GNUTLS_E_SUCCESS){

562

fprintf(stderr, "Syntax error at: %s\n", err);

563

fprintf(stderr, "GnuTLS error: %s\n",

564

safer_gnutls_strerror(ret));

580

fprintf_plus(stderr, "Syntax error at: %s\n", err);

581

fprintf_plus(stderr, "GnuTLS error: %s\n",

582

safer_gnutls_strerror(ret));

565

583

gnutls_deinit(*session);

566

584

return -1;

567

585

}

576

594

}

577

595

} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);

578

596

if(ret != GNUTLS_E_SUCCESS){

579

fprintf(stderr, "Error setting GnuTLS credentials: %s\n",

580

safer_gnutls_strerror(ret));

597

fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",

598

safer_gnutls_strerror(ret));

581

599

gnutls_deinit(*session);

582

600

return -1;

583

601

}

628

646

pf = PF_INET;

629

647

break;

630

648

default:

631

fprintf(stderr, "Bad address family: %d\n", af);

649

fprintf_plus(stderr, "Bad address family: %d\n", af);

632

650

errno = EINVAL;

633

651

return -1;

634

652

}

639

657

}

640

658

641

659

if(debug){

642

fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16

643

"\n", ip, port);

660

fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"

661

PRIu16 "\n", ip, port);

644

662

}

645

663

646

664

tcp_sd = socket(pf, SOCK_STREAM, 0);

672

690

}

673

691

if(ret == 0){

674

692

int e = errno;

675

fprintf(stderr, "Bad address: %s\n", ip);

693

fprintf_plus(stderr, "Bad address: %s\n", ip);

676

694

errno = e;

677

695

goto mandos_end;

678

696

}

683

701

684

702

if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */

685

703

(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and

686

-Wunreachable-code*/

704

-Wunreachable-code*/

687

705

if(if_index == AVAHI_IF_UNSPEC){

688

fprintf(stderr, "An IPv6 link-local address is incomplete"

689

" without a network interface\n");

706

fprintf_plus(stderr, "An IPv6 link-local address is"

707

" incomplete without a network interface\n");

690

708

errno = EINVAL;

691

709

goto mandos_end;

692

710

}

710

728

if(if_indextoname((unsigned int)if_index, interface) == NULL){

711

729

perror_plus("if_indextoname");

712

730

} else {

713

fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",

714

ip, interface, port);

731

fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIu16

732

"\n", ip, interface, port);

715

733

}

716

734

} else {

717

fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,

718

port);

735

fprintf_plus(stderr, "Connection to: %s, port %" PRIu16 "\n",

736

ip, port);

719

737

}

720

738

char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?

721

739

INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";

731

749

perror_plus("inet_ntop");

732

750

} else {

733

751

if(strcmp(addrstr, ip) != 0){

734

fprintf(stderr, "Canonical address form: %s\n", addrstr);

752

fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);

735

753

}

736

754

}

737

755

}

765

783

while(true){

766

784

size_t out_size = strlen(out);

767

785

ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,

768

out_size - written));

786

out_size - written));

769

787

if(ret == -1){

770

788

int e = errno;

771

789

perror_plus("write");

791

809

}

792

810

793

811

if(debug){

794

fprintf(stderr, "Establishing TLS session with %s\n", ip);

812

fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);

795

813

}

796

814

797

815

if(quit_now){

817

835

818

836

if(ret != GNUTLS_E_SUCCESS){

819

837

if(debug){

820

fprintf(stderr, "*** GnuTLS Handshake failed ***\n");

838

fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");

821

839

gnutls_perror(ret);

822

840

}

823

841

errno = EPROTO;

827

845

/* Read OpenPGP packet that contains the wanted password */

828

846

829

847

if(debug){

830

fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",

831

ip);

848

fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"

849

" %s\n", ip);

832

850

}

833

851

834

852

while(true){

839

857

}

840

858

841

859

buffer_capacity = incbuffer(&buffer, buffer_length,

842

buffer_capacity);

860

buffer_capacity);

843

861

if(buffer_capacity == 0){

844

862

int e = errno;

845

863

perror_plus("incbuffer");

872

890

}

873

891

} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);

874

892

if(ret < 0){

875

fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");

893

fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "

894

"***\n");

876

895

gnutls_perror(ret);

877

896

errno = EPROTO;

878

897

goto mandos_end;

879

898

}

880

899

break;

881

900

default:

882

fprintf(stderr, "Unknown error while reading data from"

883

" encrypted session with Mandos server\n");

901

fprintf_plus(stderr, "Unknown error while reading data from"

902

" encrypted session with Mandos server\n");

884

903

gnutls_bye(session, GNUTLS_SHUT_RDWR);

885

904

errno = EIO;

886

905

goto mandos_end;

891

910

}

892

911

893

912

if(debug){

894

fprintf(stderr, "Closing TLS session\n");

913

fprintf_plus(stderr, "Closing TLS session\n");

895

914

}

896

915

897

916

if(quit_now){

909

928

910

929

if(buffer_length > 0){

911

930

ssize_t decrypted_buffer_size;

912

decrypted_buffer_size = pgp_packet_decrypt(buffer,

913

buffer_length,

931

decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,

914

932

&decrypted_buffer);

915

933

if(decrypted_buffer_size >= 0){

916

934

927

945

if(ret == 0 and ferror(stdout)){

928

946

int e = errno;

929

947

if(debug){

930

fprintf(stderr, "Error writing encrypted data: %s\n",

931

strerror(errno));

948

fprintf_plus(stderr, "Error writing encrypted data: %s\n",

949

strerror(errno));

932

950

}

933

951

errno = e;

934

952

goto mandos_end;

991

1009

switch(event){

992

1010

default:

993

1011

case AVAHI_RESOLVER_FAILURE:

994

fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"

995

" of type '%s' in domain '%s': %s\n", name, type, domain,

996

avahi_strerror(avahi_server_errno(mc.server)));

1012

fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "

1013

"'%s' of type '%s' in domain '%s': %s\n", name, type,

1014

domain,

1015

avahi_strerror(avahi_server_errno(mc.server)));

997

1016

break;

998

1017

999

1018

case AVAHI_RESOLVER_FOUND:

1001

1020

char ip[AVAHI_ADDRESS_STR_MAX];

1002

1021

avahi_address_snprint(ip, sizeof(ip), address);

1003

1022

if(debug){

1004

fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"

1005

PRIdMAX ") on port %" PRIu16 "\n", name, host_name,

1006

ip, (intmax_t)interface, port);

1023

fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"

1024

PRIdMAX ") on port %" PRIu16 "\n", name,

1025

host_name, ip, (intmax_t)interface, port);

1007

1026

}

1008

1027

int ret = start_mandos_communication(ip, port, interface,

1009

1028

avahi_proto_to_af(proto));

1041

1060

default:

1042

1061

case AVAHI_BROWSER_FAILURE:

1043

1062

1044

fprintf(stderr, "(Avahi browser) %s\n",

1045

avahi_strerror(avahi_server_errno(mc.server)));

1063

fprintf_plus(stderr, "(Avahi browser) %s\n",

1064

avahi_strerror(avahi_server_errno(mc.server)));

1046

1065

avahi_simple_poll_quit(mc.simple_poll);

1047

1066

return;

1048

1067

1055

1074

if(avahi_s_service_resolver_new(mc.server, interface, protocol,

1056

1075

name, type, domain, protocol, 0,

1057

1076

resolve_callback, NULL) == NULL)

1058

fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",

1059

name, avahi_strerror(avahi_server_errno(mc.server)));

1077

fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"

1078

" %s\n", name,

1079

avahi_strerror(avahi_server_errno(mc.server)));

1060

1080

break;

1061

1081

1062

1082

case AVAHI_BROWSER_REMOVE:

1065

1085

case AVAHI_BROWSER_ALL_FOR_NOW:

1066

1086

case AVAHI_BROWSER_CACHE_EXHAUSTED:

1067

1087

if(debug){

1068

fprintf(stderr, "No Mandos server found, still searching...\n");

1088

fprintf_plus(stderr, "No Mandos server found, still"

1089

" searching...\n");

1069

1090

}

1070

1091

break;

1071

1092

}

1110

1131

/* Reject the loopback device */

1111

1132

if(ifr->ifr_flags & IFF_LOOPBACK){

1112

1133

if(debug){

1113

fprintf(stderr, "Rejecting loopback interface \"%s\"\n",

1114

ifname);

1134

fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",

1135

ifname);

1115

1136

}

1116

1137

return false;

1117

1138

}

1118

1139

/* Accept point-to-point devices only if connect_to is specified */

1119

1140

if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){

1120

1141

if(debug){

1121

fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",

1122

ifname);

1142

fprintf_plus(stderr, "Accepting point-to-point interface"

1143

" \"%s\"\n", ifname);

1123

1144

}

1124

1145

return true;

1125

1146

}

1126

1147

/* Otherwise, reject non-broadcast-capable devices */

1127

1148

if(not (ifr->ifr_flags & IFF_BROADCAST)){

1128

1149

if(debug){

1129

fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",

1130

ifname);

1150

fprintf_plus(stderr, "Rejecting non-broadcast interface"

1151

" \"%s\"\n", ifname);

1131

1152

}

1132

1153

return false;

1133

1154

}

1134

1155

/* Reject non-ARP interfaces (including dummy interfaces) */

1135

1156

if(ifr->ifr_flags & IFF_NOARP){

1136

1157

if(debug){

1137

fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n", ifname);

1158

fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",

1159

ifname);

1138

1160

}

1139

1161

return false;

1140

1162

}

1141

1163

1142

1164

/* Accept this device */

1143

1165

if(debug){

1144

fprintf(stderr, "Interface \"%s\" is good\n", ifname);

1166

fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);

1145

1167

}

1146

1168

return true;

1147

1169

}

1159

1181

struct ifreq ifr;

1160

1182

if(not get_flags(if_entry->d_name, &ifr)){

1161

1183

if(debug){

1162

fprintf(stderr, "Failed to get flags for interface \"%s\"\n",

1163

if_entry->d_name);

1184

fprintf_plus(stderr, "Failed to get flags for interface "

1185

"\"%s\"\n", if_entry->d_name);

1164

1186

}

1165

1187

return 0;

1166

1188

}

1184

1206

struct ifreq ifr;

1185

1207

if(not get_flags(if_entry->d_name, &ifr)){

1186

1208

if(debug){

1187

fprintf(stderr, "Failed to get flags for interface \"%s\"\n",

1188

if_entry->d_name);

1209

fprintf_plus(stderr, "Failed to get flags for interface "

1210

"\"%s\"\n", if_entry->d_name);

1189

1211

}

1190

1212

return 0;

1191

1213

}

1193

1215

/* Reject down interfaces */

1194

1216

if(not (ifr.ifr_flags & IFF_UP)){

1195

1217

if(debug){

1196

fprintf(stderr, "Rejecting down interface \"%s\"\n",

1197

if_entry->d_name);

1218

fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",

1219

if_entry->d_name);

1198

1220

}

1199

1221

return 0;

1200

1222

}

1202

1224

/* Reject non-running interfaces */

1203

1225

if(not (ifr.ifr_flags & IFF_RUNNING)){

1204

1226

if(debug){

1205

fprintf(stderr, "Rejecting non-running interface \"%s\"\n",

1206

if_entry->d_name);

1227

fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",

1228

if_entry->d_name);

1207

1229

}

1208

1230

return 0;

1209

1231

}

1228

1250

/* Is this directory entry a runnable program? */

1229

1251

int runnable_hook(const struct dirent *direntry){

1230

1252

int ret;

1253

size_t sret;

1231

1254

struct stat st;

1232

1255

1233

1256

if((direntry->d_name)[0] == '\0'){

1235

1258

return 0;

1236

1259

}

1237

1260

1238

/* Save pointer to last character */

1239

char *end = strchr(direntry->d_name, '\0')-1;

1240

1241

if(*end == '~'){

1242

/* Backup name~ */

1243

return 0;

1244

}

1245

1246

if(((direntry->d_name)[0] == '#')

1247

and (*end == '#')){

1248

/* Temporary #name# */

1249

return 0;

1250

}

1251

1252

/* XXX more rules here */

1253

1254

ret = stat(direntry->d_name, &st);

1261

sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

1262

"abcdefghijklmnopqrstuvwxyz"

1263

"0123456789"

1264

"_-");

1265

if((direntry->d_name)[sret] != '\0'){

1266

/* Contains non-allowed characters */

1267

if(debug){

1268

fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",

1269

direntry->d_name);

1270

}

1271

return 0;

1272

}

1273

1274

char *fullname = NULL;

1275

ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);

1276

if(ret < 0){

1277

perror_plus("asprintf");

1278

return 0;

1279

}

1280

1281

ret = stat(fullname, &st);

1255

1282

if(ret == -1){

1256

1283

if(debug){

1257

perror_plus("Could not stat plugin");

1284

perror_plus("Could not stat hook");

1258

1285

}

1259

1286

return 0;

1260

1287

}

1261

1288

if(not (S_ISREG(st.st_mode))){

1262

1289

/* Not a regular file */

1290

if(debug){

1291

fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",

1292

direntry->d_name);

1293

}

1263

1294

return 0;

1264

1295

}

1265

1296

if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){

1266

1297

/* Not executable */

1298

if(debug){

1299

fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",

1300

direntry->d_name);

1301

}

1267

1302

return 0;

1268

1303

}

1269

1304

return 1;

1278

1313

while(true){

1279

1314

if(mc.current_server == NULL){

1280

1315

if (debug){

1281

fprintf(stderr,

1282

"Wait until first server is found. No timeout!\n");

1316

fprintf_plus(stderr, "Wait until first server is found."

1317

" No timeout!\n");

1283

1318

}

1284

1319

ret = avahi_simple_poll_iterate(s, -1);

1285

1320

} else {

1286

1321

if (debug){

1287

fprintf(stderr, "Check current_server if we should run it,"

1288

" or wait\n");

1322

fprintf_plus(stderr, "Check current_server if we should run"

1323

" it, or wait\n");

1289

1324

}

1290

1325

/* the current time */

1291

1326

ret = clock_gettime(CLOCK_MONOTONIC, &now);

1307

1342

- ((intmax_t)waited_time.tv_nsec / 1000000));

1308

1343

1309

1344

if (debug){

1310

fprintf(stderr, "Blocking for %" PRIdMAX " ms\n", block_time);

1345

fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",

1346

block_time);

1311

1347

}

1312

1348

1313

1349

if(block_time <= 0){

1333

1369

ret = avahi_simple_poll_iterate(s, (int)block_time);

1334

1370

}

1335

1371

if(ret != 0){

1336

if (ret > 0 or errno != EINTR) {

1372

if (ret > 0 or errno != EINTR){

1337

1373

return (ret != 1) ? ret : 0;

1338

1374

}

1339

1375

}

1340

1376

}

1341

1377

}

1342

1378

1379

bool run_network_hooks(const char *mode, const char *interface,

1380

const float delay){

1381

struct dirent **direntries;

1382

struct dirent *direntry;

1383

int ret;

1384

int numhooks = scandir(hookdir, &direntries, runnable_hook,

1385

alphasort);

1386

if(numhooks == -1){

1387

perror_plus("scandir");

1388

} else {

1389

int devnull = open("/dev/null", O_RDONLY);

1390

for(int i = 0; i < numhooks; i++){

1391

direntry = direntries[0];

1392

char *fullname = NULL;

1393

ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);

1394

if(ret < 0){

1395

perror_plus("asprintf");

1396

continue;

1397

}

1398

pid_t hook_pid = fork();

1399

if(hook_pid == 0){

1400

/* Child */

1401

dup2(devnull, STDIN_FILENO);

1402

close(devnull);

1403

dup2(STDERR_FILENO, STDOUT_FILENO);

1404

ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);

1405

if(ret == -1){

1406

perror_plus("setenv");

1407

return false;

1408

}

1409

ret = setenv("DEVICE", interface, 1);

1410

if(ret == -1){

1411

perror_plus("setenv");

1412

return false;

1413

}

1414

ret = setenv("VERBOSE", debug ? "1" : "0", 1);

1415

if(ret == -1){

1416

perror_plus("setenv");

1417

return false;

1418

}

1419

ret = setenv("MODE", mode, 1);

1420

if(ret == -1){

1421

perror_plus("setenv");

1422

return false;

1423

}

1424

char *delaystring;

1425

ret = asprintf(&delaystring, "%f", delay);

1426

if(ret == -1){

1427

perror_plus("asprintf");

1428

return false;

1429

}

1430

ret = setenv("DELAY", delaystring, 1);

1431

if(ret == -1){

1432

free(delaystring);

1433

perror_plus("setenv");

1434

return false;

1435

}

1436

free(delaystring);

1437

ret = execl(fullname, direntry->d_name, mode, NULL);

1438

perror_plus("execl");

1439

} else {

1440

int status;

1441

if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){

1442

perror_plus("waitpid");

1443

free(fullname);

1444

continue;

1445

}

1446

if(WIFEXITED(status)){

1447

if(WEXITSTATUS(status) != 0){

1448

fprintf_plus(stderr, "Warning: network hook \"%s\" exited"

1449

" with status %d\n", direntry->d_name,

1450

WEXITSTATUS(status));

1451

free(fullname);

1452

continue;

1453

}

1454

} else if(WIFSIGNALED(status)){

1455

fprintf_plus(stderr, "Warning: network hook \"%s\" died by"

1456

" signal %d\n", direntry->d_name,

1457

WTERMSIG(status));

1458

free(fullname);

1459

continue;

1460

} else {

1461

fprintf_plus(stderr, "Warning: network hook \"%s\""

1462

" crashed\n", direntry->d_name);

1463

free(fullname);

1464

continue;

1465

}

1466

}

1467

free(fullname);

1468

if(quit_now){

1469

break;

1470

}

1471

}

1472

close(devnull);

1473

}

1474

return true;

1475

}

1476

1343

1477

int main(int argc, char *argv[]){

1344

1478

AvahiSServiceBrowser *sb = NULL;

1345

1479

int error;

1427

1561

.arg = "SECONDS",

1428

1562

.doc = "Retry interval used when denied by the mandos server",

1429

1563

.group = 2 },

1564

{ .name = "network-hook-dir", .key = 133,

1565

.arg = "DIR",

1566

.doc = "Directory where network hooks are located",

1567

.group = 2 },

1430

1568

/*

1431

1569

* These reproduce what we would get without ARGP_NO_HELP

1432

1570

*/

1485

1623

argp_error(state, "Bad retry interval");

1486

1624

}

1487

1625

break;

1626

case 133: /* --network-hook-dir */

1627

hookdir = arg;

1628

break;

1488

1629

/*

1489

1630

* These reproduce what we would get without ARGP_NO_HELP

1490

1631

*/

1496

1637

argp_state_help(state, state->out_stream,

1497

1638

ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);

1498

1639

case 'V': /* --version */

1499

fprintf(state->out_stream, "%s\n", argp_program_version);

1640

fprintf_plus(state->out_stream,

1641

"Mandos plugin mandos-client: ");

1642

fprintf_plus(state->out_stream, "%s\n", argp_program_version);

1500

1643

exit(argp_err_exit_status);

1501

1644

break;

1502

1645

default:

1547

1690

if(ret == -1){

1548

1691

perror_plus("fstat");

1549

1692

} else {

1550

if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){

1693

if(S_ISREG(st.st_mode)

1694

and st.st_uid == 0 and st.st_gid == 0){

1551

1695

ret = fchown(seckey_fd, uid, gid);

1552

1696

if(ret == -1){

1553

1697

perror_plus("fchown");

1567

1711

if(ret == -1){

1568

1712

perror_plus("fstat");

1569

1713

} else {

1570

if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){

1714

if(S_ISREG(st.st_mode)

1715

and st.st_uid == 0 and st.st_gid == 0){

1571

1716

ret = fchown(pubkey_fd, uid, gid);

1572

1717

if(ret == -1){

1573

1718

perror_plus("fchown");

1586

1731

}

1587

1732

}

1588

1733

1589

/* Find network hooks and run them */

1734

/* Run network hooks */

1590

1735

{

1591

struct dirent **direntries;

1592

struct dirent *direntry;

1593

int numhooks = scandir(HOOKDIR, &direntries, runnable_hook,

1594

alphasort);

1595

int devnull = open("/dev/null", O_RDONLY);

1596

for(int i = 0; i < numhooks; i++){

1597

direntry = direntries[0];

1598

char *fullname = NULL;

1599

ret = asprintf(&fullname, "%s/%s", tempdir,

1600

direntry->d_name);

1601

if(ret < 0){

1602

perror_plus("asprintf");

1603

continue;

1604

}

1605

pid_t hook_pid = fork();

1606

if(hook_pid == 0){

1607

/* Child */

1608

dup2(devnull, STDIN_FILENO);

1609

close(devnull);

1610

dup2(STDERR_FILENO, STDOUT_FILENO);

1611

setenv("DEVICE", interface, 1);

1612

setenv("VERBOSE", debug ? "1" : "0", 1);

1613

setenv("MODE", "start", 1);

1614

/* setenv( XXX more here */

1615

ret = execl(fullname, direntry->d_name, "start", NULL);

1616

perror_plus("execl");

1617

}

1618

free(fullname);

1619

if(quit_now){

1620

goto end;

1621

}

1622

}

1623

close(devnull);

1736

/* Re-raise priviliges */

1737

errno = 0;

1738

ret = seteuid(0);

1739

if(ret == -1){

1740

perror_plus("seteuid");

1741

}

1742

if(not run_network_hooks("start", interface, delay)){

1743

goto end;

1744

}

1745

/* Lower privileges */

1746

errno = 0;

1747

ret = seteuid(uid);

1748

if(ret == -1){

1749

perror_plus("seteuid");

1750

}

1624

1751

}

1625

1752

1626

1753

if(not debug){

1642

1769

/* Pick the first interface returned */

1643

1770

interface = strdup(direntries[0]->d_name);

1644

1771

if(debug){

1645

fprintf(stderr, "Using interface \"%s\"\n", interface);

1772

fprintf_plus(stderr, "Using interface \"%s\"\n", interface);

1646

1773

}

1647

1774

if(interface == NULL){

1648

1775

perror_plus("malloc");

1653

1780

free(direntries);

1654

1781

} else {

1655

1782

free(direntries);

1656

fprintf(stderr, "Could not find a network interface\n");

1783

fprintf_plus(stderr, "Could not find a network interface\n");

1657

1784

exitcode = EXIT_FAILURE;

1658

1785

goto end;

1659

1786

}

1665

1792

srand((unsigned int) time(NULL));

1666

1793

mc.simple_poll = avahi_simple_poll_new();

1667

1794

if(mc.simple_poll == NULL){

1668

fprintf(stderr, "Avahi: Failed to create simple poll object.\n");

1795

fprintf_plus(stderr,

1796

"Avahi: Failed to create simple poll object.\n");

1669

1797

exitcode = EX_UNAVAILABLE;

1670

1798

goto end;

1671

1799

}

1737

1865

if(strcmp(interface, "none") != 0){

1738

1866

if_index = (AvahiIfIndex) if_nametoindex(interface);

1739

1867

if(if_index == 0){

1740

fprintf(stderr, "No such interface: \"%s\"\n", interface);

1868

fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);

1741

1869

exitcode = EX_UNAVAILABLE;

1742

1870

goto end;

1743

1871

}

1863

1991

#endif /* __linux__ */

1864

1992

/* Lower privileges */

1865

1993

errno = 0;

1866

if(take_down_interface){

1867

/* Lower privileges */

1868

ret = seteuid(uid);

1869

if(ret == -1){

1870

perror_plus("seteuid");

1871

}

1872

} else {

1873

/* Lower privileges permanently */

1874

ret = setuid(uid);

1875

if(ret == -1){

1876

perror_plus("setuid");

1877

}

1994

/* Lower privileges */

1995

ret = seteuid(uid);

1996

if(ret == -1){

1997

perror_plus("seteuid");

1878

1998

}

1879

1999

}

1880

2000

1884

2004

1885

2005

ret = init_gnutls_global(pubkey, seckey);

1886

2006

if(ret == -1){

1887

fprintf(stderr, "init_gnutls_global failed\n");

2007

fprintf_plus(stderr, "init_gnutls_global failed\n");

1888

2008

exitcode = EX_UNAVAILABLE;

1889

2009

goto end;

1890

2010

} else {

1906

2026

}

1907

2027

1908

2028

if(not init_gpgme(pubkey, seckey, tempdir)){

1909

fprintf(stderr, "init_gpgme failed\n");

2029

fprintf_plus(stderr, "init_gpgme failed\n");

1910

2030

exitcode = EX_UNAVAILABLE;

1911

2031

goto end;

1912

2032

} else {

1922

2042

/* (Mainly meant for debugging) */

1923

2043

char *address = strrchr(connect_to, ':');

1924

2044

if(address == NULL){

1925

fprintf(stderr, "No colon in address\n");

2045

fprintf_plus(stderr, "No colon in address\n");

1926

2046

exitcode = EX_USAGE;

1927

2047

goto end;

1928

2048

}

1936

2056

tmpmax = strtoimax(address+1, &tmp, 10);

1937

2057

if(errno != 0 or tmp == address+1 or *tmp != '\0'

1938

2058

or tmpmax != (uint16_t)tmpmax){

1939

fprintf(stderr, "Bad port number\n");

2059

fprintf_plus(stderr, "Bad port number\n");

1940

2060

exitcode = EX_USAGE;

1941

2061

goto end;

1942

2062

}

1972

2092

break;

1973

2093

}

1974

2094

if(debug){

1975

fprintf(stderr, "Retrying in %d seconds\n",

1976

(int)retry_interval);

2095

fprintf_plus(stderr, "Retrying in %d seconds\n",

2096

(int)retry_interval);

1977

2097

}

1978

2098

sleep((int)retry_interval);

1979

2099

}

2009

2129

2010

2130

/* Check if creating the Avahi server object succeeded */

2011

2131

if(mc.server == NULL){

2012

fprintf(stderr, "Failed to create Avahi server: %s\n",

2013

avahi_strerror(error));

2132

fprintf_plus(stderr, "Failed to create Avahi server: %s\n",

2133

avahi_strerror(error));

2014

2134

exitcode = EX_UNAVAILABLE;

2015

2135

goto end;

2016

2136

}

2024

2144

AVAHI_PROTO_UNSPEC, "_mandos._tcp",

2025

2145

NULL, 0, browse_callback, NULL);

2026

2146

if(sb == NULL){

2027

fprintf(stderr, "Failed to create service browser: %s\n",

2028

avahi_strerror(avahi_server_errno(mc.server)));

2147

fprintf_plus(stderr, "Failed to create service browser: %s\n",

2148

avahi_strerror(avahi_server_errno(mc.server)));

2029

2149

exitcode = EX_UNAVAILABLE;

2030

2150

goto end;

2031

2151

}

2037

2157

/* Run the main loop */

2038

2158

2039

2159

if(debug){

2040

fprintf(stderr, "Starting Avahi loop search\n");

2160

fprintf_plus(stderr, "Starting Avahi loop search\n");

2041

2161

}

2042

2162

2043

2163

ret = avahi_loop_with_timeout(mc.simple_poll,

2044

2164

(int)(retry_interval * 1000));

2045

2165

if(debug){

2046

fprintf(stderr, "avahi_loop_with_timeout exited %s\n",

2047

(ret == 0) ? "successfully" : "with error");

2166

fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",

2167

(ret == 0) ? "successfully" : "with error");

2048

2168

}

2049

2169

2050

2170

end:

2051

2171

2052

2172

if(debug){

2053

fprintf(stderr, "%s exiting\n", argv[0]);

2173

fprintf_plus(stderr, "%s exiting\n", argv[0]);

2054

2174

}

2055

2175

2056

2176

/* Cleanup things */

2084

2204

}

2085

2205

}

2086

2206

2087

/* XXX run network hooks "stop" here */

2088

2089

/* Take down the network interface */

2090

if(take_down_interface){

2091

/* Re-raise priviliges */

2207

/* Re-raise priviliges */

2208

{

2092

2209

errno = 0;

2093

2210

ret = seteuid(0);

2094

2211

if(ret == -1){

2095

2212

perror_plus("seteuid");

2096

2213

}

2097

if(geteuid() == 0){

2214

/* Run network hooks */

2215

if(not run_network_hooks("stop", interface, delay)){

2216

goto end;

2217

}

2218

2219

/* Take down the network interface */

2220

if(take_down_interface and geteuid() == 0){

2098

2221

ret = ioctl(sd, SIOCGIFFLAGS, &network);

2099

2222

if(ret == -1){

2100

2223

perror_plus("ioctl SIOCGIFFLAGS");

2101

} else if(network.ifr_flags & IFF_UP) {

2224

} else if(network.ifr_flags & IFF_UP){

2102

2225

network.ifr_flags &= ~(short)IFF_UP; /* clear flag */

2103

2226

ret = ioctl(sd, SIOCSIFFLAGS, &network);

2104

2227

if(ret == -1){

2109

2232

if(ret == -1){

2110

2233

perror_plus("close");

2111

2234

}

2112

/* Lower privileges permanently */

2113

errno = 0;

2114

ret = setuid(uid);

2115

if(ret == -1){

2116

perror_plus("setuid");

2117

}

2118

2235

}

2119

2236

}

2237

/* Lower privileges permanently */

2238

errno = 0;

2239

ret = setuid(uid);

2240

if(ret == -1){

2241

perror_plus("setuid");

2242

}

2120

2243

2121

2244

/* Removes the GPGME temp directory and all files inside */

2122

2245

if(tempdir_created){

2136

2259

}

2137

2260

ret = remove(fullname);

2138

2261

if(ret == -1){

2139

fprintf(stderr, "remove(\"%s\"): %s\n", fullname,

2140

strerror(errno));

2262

fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,

2263

strerror(errno));

2141

2264

}

2142

2265

free(fullname);

2143

2266

}