/mandos/trunk : revision 261

36

#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */

37

38

#include <stdio.h> /* fprintf(), stderr, fwrite(),

39

stdout, ferror(), sscanf */

39

stdout, ferror() */

40

#include <stdint.h> /* uint16_t, uint32_t */

41

#include <stddef.h> /* NULL, size_t, ssize_t */

42

#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,

48

#include <sys/types.h> /* socket(), inet_pton(), sockaddr,

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sockaddr_in6, PF_INET6,

50

SOCK_STREAM, INET6_ADDRSTRLEN,

51

uid_t, gid_t, open(), opendir(),

52

DIR */

51

uid_t, gid_t, open(), opendir(), DIR */

53

52

#include <sys/stat.h> /* open() */

54

53

#include <sys/socket.h> /* socket(), struct sockaddr_in6,

55

54

struct in6_addr, inet_pton(),

56

55

connect() */

57

56

#include <fcntl.h> /* open() */

58

#include <dirent.h> /* opendir(), struct dirent, readdir()

59

*/

60

#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */

57

#include <dirent.h> /* opendir(), struct dirent, readdir() */

58

#include <inttypes.h> /* PRIu16 */

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59

#include <assert.h> /* assert() */

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60

#include <errno.h> /* perror(), errno */

63

61

#include <time.h> /* time() */

69

67

getuid(), getgid(), setuid(),

70

68

setgid() */

71

69

#include <arpa/inet.h> /* inet_pton(), htons */

72

#include <iso646.h> /* not, and, or */

70

#include <iso646.h> /* not, and */

73

71

#include <argp.h> /* struct argp_option, error_t, struct

74

72

argp_state, struct argp,

75

73

argp_parse(), ARGP_KEY_ARG,

92

90

gnutls_*

93

91

init_gnutls_session(),

94

92

GNUTLS_* */

95

#include <gnutls/openpgp.h>

96

/* gnutls_certificate_set_openpgp_key_file(),

93

#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),

97

94

GNUTLS_OPENPGP_FMT_BASE64 */

98

95

99

96

/* GPGME */

132

129

*/

133

130

size_t adjustbuffer(char **buffer, size_t buffer_length,

134

131

size_t buffer_capacity){

135

if(buffer_length + BUFFER_SIZE > buffer_capacity){

132

if (buffer_length + BUFFER_SIZE > buffer_capacity){

136

133

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

137

if(buffer == NULL){

134

if (buffer == NULL){

138

135

return 0;

139

136

}

140

137

buffer_capacity += BUFFER_SIZE;

166

163

}

167

164

168

165

rc = gpgme_data_new_from_fd(&pgp_data, fd);

169

if(rc != GPG_ERR_NO_ERROR){

166

if (rc != GPG_ERR_NO_ERROR){

170

167

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

171

168

gpgme_strsource(rc), gpgme_strerror(rc));

172

169

return false;

173

170

}

174

171

175

172

rc = gpgme_op_import(mc->ctx, pgp_data);

176

if(rc != GPG_ERR_NO_ERROR){

173

if (rc != GPG_ERR_NO_ERROR){

177

174

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

178

175

gpgme_strsource(rc), gpgme_strerror(rc));

179

176

return false;

187

184

return true;

188

185

}

189

186

190

if(debug){

187

if (debug){

191

188

fprintf(stderr, "Initialize gpgme\n");

192

189

}

193

190

194

191

/* Init GPGME */

195

192

gpgme_check_version(NULL);

196

193

rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);

197

if(rc != GPG_ERR_NO_ERROR){

194

if (rc != GPG_ERR_NO_ERROR){

198

195

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

199

196

gpgme_strsource(rc), gpgme_strerror(rc));

200

197

return false;

201

198

}

202

199

203

200

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

204

rc = gpgme_get_engine_info(&engine_info);

205

if(rc != GPG_ERR_NO_ERROR){

201

rc = gpgme_get_engine_info (&engine_info);

202

if (rc != GPG_ERR_NO_ERROR){

206

203

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

207

204

gpgme_strsource(rc), gpgme_strerror(rc));

208

205

return false;

222

219

223

220

/* Create new GPGME "context" */

224

221

rc = gpgme_new(&(mc->ctx));

225

if(rc != GPG_ERR_NO_ERROR){

222

if (rc != GPG_ERR_NO_ERROR){

226

223

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

227

224

gpgme_strsource(rc), gpgme_strerror(rc));

228

225

return false;

229

226

}

230

227

231

if(not import_key(pubkey) or not import_key(seckey)){

228

if (not import_key(pubkey) or not import_key(seckey)){

232

229

return false;

233

230

}

234

231

239

236

* Decrypt OpenPGP data.

240

237

* Returns -1 on error

241

238

*/

242

static ssize_t pgp_packet_decrypt(const mandos_context *mc,

243

const char *cryptotext,

244

size_t crypto_size,

245

char **plaintext){

239

static ssize_t pgp_packet_decrypt (const mandos_context *mc,

240

const char *cryptotext,

241

size_t crypto_size,

242

char **plaintext){

246

243

gpgme_data_t dh_crypto, dh_plain;

247

244

gpgme_error_t rc;

248

245

ssize_t ret;

249

246

size_t plaintext_capacity = 0;

250

247

ssize_t plaintext_length = 0;

251

248

252

if(debug){

249

if (debug){

253

250

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

254

251

}

255

252

256

253

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

257

254

rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,

258

255

0);

259

if(rc != GPG_ERR_NO_ERROR){

256

if (rc != GPG_ERR_NO_ERROR){

260

257

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

261

258

gpgme_strsource(rc), gpgme_strerror(rc));

262

259

return -1;

264

261

265

262

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

266

263

rc = gpgme_data_new(&dh_plain);

267

if(rc != GPG_ERR_NO_ERROR){

264

if (rc != GPG_ERR_NO_ERROR){

268

265

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

269

266

gpgme_strsource(rc), gpgme_strerror(rc));

270

267

gpgme_data_release(dh_crypto);

274

271

/* Decrypt data from the cryptotext data buffer to the plaintext

275

272

data buffer */

276

273

rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);

277

if(rc != GPG_ERR_NO_ERROR){

274

if (rc != GPG_ERR_NO_ERROR){

278

275

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

279

276

gpgme_strsource(rc), gpgme_strerror(rc));

280

277

plaintext_length = -1;

281

if(debug){

278

if (debug){

282

279

gpgme_decrypt_result_t result;

283

280

result = gpgme_op_decrypt_result(mc->ctx);

284

if(result == NULL){

281

if (result == NULL){

285

282

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

286

283

} else {

287

284

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

314

311

}

315

312

316

313

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

317

if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){

314

if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){

318

315

perror("gpgme_data_seek");

319

316

plaintext_length = -1;

320

317

goto decrypt_end;

325

322

plaintext_capacity = adjustbuffer(plaintext,

326

323

(size_t)plaintext_length,

327

324

plaintext_capacity);

328

if(plaintext_capacity == 0){

325

if (plaintext_capacity == 0){

329

326

perror("adjustbuffer");

330

327

plaintext_length = -1;

331

328

goto decrypt_end;

334

331

ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,

335

332

BUFFER_SIZE);

336

333

/* Print the data, if any */

337

if(ret == 0){

334

if (ret == 0){

338

335

/* EOF */

339

336

break;

340

337

}

364

361

return plaintext_length;

365

362

}

366

363

367

static const char * safer_gnutls_strerror(int value) {

368

const char *ret = gnutls_strerror(value); /* Spurious warning from

369

-Wunreachable-code */

370

if(ret == NULL)

364

static const char * safer_gnutls_strerror (int value) {

365

const char *ret = gnutls_strerror (value); /* Spurious warning */

366

if (ret == NULL)

371

367

ret = "(unknown)";

372

368

return ret;

373

369

}

388

384

}

389

385

390

386

ret = gnutls_global_init();

391

if(ret != GNUTLS_E_SUCCESS) {

392

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

393

safer_gnutls_strerror(ret));

387

if (ret != GNUTLS_E_SUCCESS) {

388

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

389

safer_gnutls_strerror(ret));

394

390

return -1;

395

391

}

396

392

397

if(debug){

393

if (debug){

398

394

/* "Use a log level over 10 to enable all debugging options."

399

395

* - GnuTLS manual

400

396

*/

404

400

405

401

/* OpenPGP credentials */

406

402

gnutls_certificate_allocate_credentials(&mc->cred);

407

if(ret != GNUTLS_E_SUCCESS){

408

fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning

409

* from

410

* -Wunreachable-code

411

*/

412

safer_gnutls_strerror(ret));

413

gnutls_global_deinit();

403

if (ret != GNUTLS_E_SUCCESS){

404

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

405

warning */

406

safer_gnutls_strerror(ret));

407

gnutls_global_deinit ();

414

408

return -1;

415

409

}

416

410

423

417

ret = gnutls_certificate_set_openpgp_key_file

424

418

(mc->cred, pubkeyfilename, seckeyfilename,

425

419

GNUTLS_OPENPGP_FMT_BASE64);

426

if(ret != GNUTLS_E_SUCCESS) {

420

if (ret != GNUTLS_E_SUCCESS) {

427

421

fprintf(stderr,

428

422

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

429

423

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

434

428

435

429

/* GnuTLS server initialization */

436

430

ret = gnutls_dh_params_init(&mc->dh_params);

437

if(ret != GNUTLS_E_SUCCESS) {

438

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

439

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

431

if (ret != GNUTLS_E_SUCCESS) {

432

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

433

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

440

434

goto globalfail;

441

435

}

442

436

ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);

443

if(ret != GNUTLS_E_SUCCESS) {

444

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

445

safer_gnutls_strerror(ret));

437

if (ret != GNUTLS_E_SUCCESS) {

438

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

439

safer_gnutls_strerror(ret));

446

440

goto globalfail;

447

441

}

448

442

463

457

int ret;

464

458

/* GnuTLS session creation */

465

459

ret = gnutls_init(session, GNUTLS_SERVER);

466

if(ret != GNUTLS_E_SUCCESS){

460

if (ret != GNUTLS_E_SUCCESS){

467

461

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

468

462

safer_gnutls_strerror(ret));

469

463

}

471

465

{

472

466

const char *err;

473

467

ret = gnutls_priority_set_direct(*session, mc->priority, &err);

474

if(ret != GNUTLS_E_SUCCESS) {

468

if (ret != GNUTLS_E_SUCCESS) {

475

469

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

476

470

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

477

471

safer_gnutls_strerror(ret));

478

gnutls_deinit(*session);

472

gnutls_deinit (*session);

479

473

return -1;

480

474

}

481

475

}

482

476

483

477

ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,

484

478

mc->cred);

485

if(ret != GNUTLS_E_SUCCESS) {

479

if (ret != GNUTLS_E_SUCCESS) {

486

480

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

487

481

safer_gnutls_strerror(ret));

488

gnutls_deinit(*session);

482

gnutls_deinit (*session);

489

483

return -1;

490

484

}

491

485

492

486

/* ignore client certificate if any. */

493

gnutls_certificate_server_set_request(*session,

494

GNUTLS_CERT_IGNORE);

487

gnutls_certificate_server_set_request (*session,

488

GNUTLS_CERT_IGNORE);

495

489

496

gnutls_dh_set_prime_bits(*session, mc->dh_bits);

490

gnutls_dh_set_prime_bits (*session, mc->dh_bits);

497

491

498

492

return 0;

499

493

}

519

513

char interface[IF_NAMESIZE];

520

514

gnutls_session_t session;

521

515

522

ret = init_gnutls_session(mc, &session);

523

if(ret != 0){

516

ret = init_gnutls_session (mc, &session);

517

if (ret != 0){

524

518

return -1;

525

519

}

526

520

548

542

/* It would be nice to have a way to detect if we were passed an

549

543

IPv4 address here. Now we assume an IPv6 address. */

550

544

ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);

551

if(ret < 0 ){

545

if (ret < 0 ){

552

546

perror("inet_pton");

553

547

return -1;

554

548

}

556

550

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

557

551

return -1;

558

552

}

559

to.in6.sin6_port = htons(port); /* Spurious warnings from

560

-Wconversion and

561

-Wunreachable-code */

553

to.in6.sin6_port = htons(port); /* Spurious warning */

562

554

563

555

to.in6.sin6_scope_id = (uint32_t)if_index;

564

556

577

569

}

578

570

579

571

ret = connect(tcp_sd, &to.in, sizeof(to));

580

if(ret < 0){

572

if (ret < 0){

581

573

perror("connect");

582

574

return -1;

583

575

}

584

576

585

577

const char *out = mandos_protocol_version;

586

578

written = 0;

587

while(true){

579

while (true){

588

580

size_t out_size = strlen(out);

589

581

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

590

582

out_size - written));

591

if(ret == -1){

583

if (ret == -1){

592

584

perror("write");

593

585

retval = -1;

594

586

goto mandos_end;

597

589

if(written < out_size){

598

590

continue;

599

591

} else {

600

if(out == mandos_protocol_version){

592

if (out == mandos_protocol_version){

601

593

written = 0;

602

594

out = "\r\n";

603

595

} else {

610

602

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

611

603

}

612

604

613

gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);

605

gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);

614

606

615

607

do{

616

ret = gnutls_handshake(session);

608

ret = gnutls_handshake (session);

617

609

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

618

610

619

if(ret != GNUTLS_E_SUCCESS){

611

if (ret != GNUTLS_E_SUCCESS){

620

612

if(debug){

621

613

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

622

gnutls_perror(ret);

614

gnutls_perror (ret);

623

615

}

624

616

retval = -1;

625

617

goto mandos_end;

635

627

while(true){

636

628

buffer_capacity = adjustbuffer(&buffer, buffer_length,

637

629

buffer_capacity);

638

if(buffer_capacity == 0){

630

if (buffer_capacity == 0){

639

631

perror("adjustbuffer");

640

632

retval = -1;

641

633

goto mandos_end;

643

635

644

636

sret = gnutls_record_recv(session, buffer+buffer_length,

645

637

BUFFER_SIZE);

646

if(sret == 0){

638

if (sret == 0){

647

639

break;

648

640

}

649

if(sret < 0){

641

if (sret < 0){

650

642

switch(sret){

651

643

case GNUTLS_E_INTERRUPTED:

652

644

case GNUTLS_E_AGAIN:

653

645

break;

654

646

case GNUTLS_E_REHANDSHAKE:

655

647

do{

656

ret = gnutls_handshake(session);

648

ret = gnutls_handshake (session);

657

649

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

658

if(ret < 0){

650

if (ret < 0){

659

651

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

660

gnutls_perror(ret);

652

gnutls_perror (ret);

661

653

retval = -1;

662

654

goto mandos_end;

663

655

}

666

658

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

667

659

" encrypted session with Mandos server\n");

668

660

retval = -1;

669

gnutls_bye(session, GNUTLS_SHUT_RDWR);

661

gnutls_bye (session, GNUTLS_SHUT_RDWR);

670

662

goto mandos_end;

671

663

}

672

664

} else {

678

670

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

679

671

}

680

672

681

gnutls_bye(session, GNUTLS_SHUT_RDWR);

673

gnutls_bye (session, GNUTLS_SHUT_RDWR);

682

674

683

if(buffer_length > 0){

675

if (buffer_length > 0){

684

676

decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,

685

677

buffer_length,

686

678

&decrypted_buffer);

687

if(decrypted_buffer_size >= 0){

679

if (decrypted_buffer_size >= 0){

688

680

written = 0;

689

681

while(written < (size_t) decrypted_buffer_size){

690

ret = (int)fwrite(decrypted_buffer + written, 1,

691

(size_t)decrypted_buffer_size - written,

692

stdout);

682

ret = (int)fwrite (decrypted_buffer + written, 1,

683

(size_t)decrypted_buffer_size - written,

684

stdout);

693

685

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

694

686

if(debug){

695

687

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

716

708

if(ret == -1){

717

709

perror("close");

718

710

}

719

gnutls_deinit(session);

711

gnutls_deinit (session);

720

712

return retval;

721

713

}

722

714

740

732

/* Called whenever a service has been resolved successfully or

741

733

timed out */

742

734

743

switch(event) {

735

switch (event) {

744

736

default:

745

737

case AVAHI_RESOLVER_FAILURE:

746

738

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

754

746

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

755

747

if(debug){

756

748

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

757

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

758

ip, (intmax_t)interface, port);

749

PRIu16 ") on port %d\n", name, host_name, ip,

750

interface, port);

759

751

}

760

752

int ret = start_mandos_communication(ip, port, interface, mc);

761

if(ret == 0){

753

if (ret == 0){

762

754

avahi_simple_poll_quit(mc->simple_poll);

763

755

}

764

756

}

782

774

/* Called whenever a new services becomes available on the LAN or

783

775

is removed from the LAN */

784

776

785

switch(event) {

777

switch (event) {

786

778

default:

787

779

case AVAHI_BROWSER_FAILURE:

788

780

797

789

the callback function is called the Avahi server will free the

798

790

resolver for us. */

799

791

800

if(!(avahi_s_service_resolver_new(mc->server, interface,

792

if (!(avahi_s_service_resolver_new(mc->server, interface,

801

793

protocol, name, type, domain,

802

794

AVAHI_PROTO_INET6, 0,

803

795

resolve_callback, mc)))

821

813

AvahiSServiceBrowser *sb = NULL;

822

814

int error;

823

815

int ret;

824

intmax_t tmpmax;

825

int numchars;

826

816

int exitcode = EXIT_SUCCESS;

827

817

const char *interface = "eth0";

828

818

struct ifreq network;

874

864

{ .name = NULL }

875

865

};

876

866

877

error_t parse_opt(int key, char *arg,

878

struct argp_state *state) {

879

switch(key) {

867

error_t parse_opt (int key, char *arg,

868

struct argp_state *state) {

869

/* Get the INPUT argument from `argp_parse', which we know is

870

a pointer to our plugin list pointer. */

871

switch (key) {

880

872

case 128: /* --debug */

881

873

debug = true;

882

874

break;

893

885

pubkey = arg;

894

886

break;

895

887

case 129: /* --dh-bits */

896

ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);

897

if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax

898

or arg[numchars] != '\0'){

899

fprintf(stderr, "Bad number of DH bits\n");

888

errno = 0;

889

mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);

890

if (errno){

891

perror("strtol");

900

892

exit(EXIT_FAILURE);

901

893

}

902

mc.dh_bits = (typeof(mc.dh_bits))tmpmax;

903

894

break;

904

895

case 130: /* --priority */

905

896

mc.priority = arg;

906

897

break;

907

898

case ARGP_KEY_ARG:

908

argp_usage(state);

899

argp_usage (state);

909

900

case ARGP_KEY_END:

910

901

break;

911

902

default:

918

909

.args_doc = "",

919

910

.doc = "Mandos client -- Get and decrypt"

920

911

" passwords from a Mandos server" };

921

ret = argp_parse(&argp, argc, argv, 0, 0, NULL);

922

if(ret == ARGP_ERR_UNKNOWN){

912

ret = argp_parse (&argp, argc, argv, 0, 0, NULL);

913

if (ret == ARGP_ERR_UNKNOWN){

923

914

fprintf(stderr, "Unknown error while parsing arguments\n");

924

915

exitcode = EXIT_FAILURE;

925

916

goto end;

960

951

gid = getgid();

961

952

962

953

ret = setuid(uid);

963

if(ret == -1){

954

if (ret == -1){

964

955

perror("setuid");

965

956

}

966

957

967

958

setgid(gid);

968

if(ret == -1){

959

if (ret == -1){

969

960

perror("setgid");

970

961

}

971

962

972

963

ret = init_gnutls_global(&mc, pubkey, seckey);

973

if(ret == -1){

964

if (ret == -1){

974

965

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

975

966

exitcode = EXIT_FAILURE;

976

967

goto end;

1007

998

exitcode = EXIT_FAILURE;

1008

999

goto end;

1009

1000

}

1010

uint16_t port;

1011

ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);

1012

if(ret < 1 or tmpmax != (uint16_t)tmpmax

1013

or address[numchars+1] != '\0'){

1014

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

1001

errno = 0;

1002

uint16_t port = (uint16_t) strtol(address+1, NULL, 10);

1003

if(errno){

1004

perror("Bad port number");

1015

1005

exitcode = EXIT_FAILURE;

1016

1006

goto end;

1017

1007

}

1018

port = (uint16_t)tmpmax;

1019

1008

*address = '\0';

1020

1009

address = connect_to;

1021

1010

ret = start_mandos_communication(address, port, if_index, &mc);

1027

1016

goto end;

1028

1017

}

1029

1018

1030

if(not debug){

1019

if (not debug){

1031

1020

avahi_set_log_function(empty_log);

1032

1021

}

1033

1022

1036

1025

1037

1026

/* Allocate main Avahi loop object */

1038

1027

mc.simple_poll = avahi_simple_poll_new();

1039

if(mc.simple_poll == NULL) {

1028

if (mc.simple_poll == NULL) {

1040

1029

fprintf(stderr, "Avahi: Failed to create simple poll"

1041

1030

" object.\n");

1042

1031

exitcode = EXIT_FAILURE;

1062

1051

}

1063

1052

1064

1053

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

1065

if(mc.server == NULL) {

1054

if (mc.server == NULL) {

1066

1055

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

1067

1056

avahi_strerror(error));

1068

1057

exitcode = EXIT_FAILURE;

1074

1063

AVAHI_PROTO_INET6,

1075

1064

"_mandos._tcp", NULL, 0,

1076

1065

browse_callback, &mc);

1077

if(sb == NULL) {

1066

if (sb == NULL) {

1078

1067

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

1079

1068

avahi_strerror(avahi_server_errno(mc.server)));

1080

1069

exitcode = EXIT_FAILURE;

1083

1072

1084

1073

/* Run the main loop */

1085

1074

1086

if(debug){

1075

if (debug){

1087

1076

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

1088

1077

}

1089

1078

1091

1080

1092

1081

end:

1093

1082

1094

if(debug){

1083

if (debug){

1095

1084

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

1096

1085

}

1097

1086

1098

1087

/* Cleanup things */

1099

if(sb != NULL)

1088

if (sb != NULL)

1100

1089

avahi_s_service_browser_free(sb);

1101

1090

1102

if(mc.server != NULL)

1091

if (mc.server != NULL)

1103

1092

avahi_server_free(mc.server);

1104

1093

1105

if(mc.simple_poll != NULL)

1094

if (mc.simple_poll != NULL)

1106

1095

avahi_simple_poll_free(mc.simple_poll);

1107

1096

1108

if(gnutls_initalized){

1097

if (gnutls_initalized){

1109

1098

gnutls_certificate_free_credentials(mc.cred);

1110

gnutls_global_deinit();

1099

gnutls_global_deinit ();

1111

1100

gnutls_dh_params_deinit(mc.dh_params);

1112

1101

}

1113

1102

1121

1110

struct dirent *direntry;

1122

1111

d = opendir(tempdir);

1123

1112

if(d == NULL){

1124

if(errno != ENOENT){

1125

perror("opendir");

1126

}

1113

perror("opendir");

1127

1114

} else {

1128

1115

while(true){

1129

1116

direntry = readdir(d);

1130

1117

if(direntry == NULL){

1131

1118

break;

1132

1119

}

1133

if(direntry->d_type == DT_REG){

1120

if (direntry->d_type == DT_REG){

1134

1121

char *fullname = NULL;

1135

1122

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

1136

1123

direntry->d_name);

1149

1136

closedir(d);

1150

1137

}

1151

1138

ret = rmdir(tempdir);

1152

if(ret == -1 and errno != ENOENT){

1139

if(ret == -1){

1153

1140

perror("rmdir");

1154

1141

}

1155

1142

}