/mandos/trunk : revision 24.1.14

32

#define _LARGEFILE_SOURCE

33

#define _FILE_OFFSET_BITS 64

34

35

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

35

#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */

36

37

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

38

stdout, ferror() */

39

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

40

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

41

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

42

srand() */

43

#include <stdbool.h> /* bool, true */

44

#include <string.h> /* memset(), strcmp(), strlen(),

45

strerror(), asprintf(), strcpy() */

46

#include <sys/ioctl.h> /* ioctl */

47

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

48

sockaddr_in6, PF_INET6,

49

SOCK_STREAM, INET6_ADDRSTRLEN,

50

uid_t, gid_t */

51

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

52

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

53

struct in6_addr, inet_pton(),

54

connect() */

55

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

56

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

57

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

37

#include <stdio.h>

38

#include <assert.h>

39

#include <stdlib.h>

40

#include <time.h>

41

#include <net/if.h> /* if_nametoindex */

42

#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,

43

SIOCSIFFLAGS */

58

44

#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,

59

SIOCSIFFLAGS, if_indextoname(),

60

if_nametoindex(), IF_NAMESIZE */

61

#include <unistd.h> /* close(), SEEK_SET, off_t, write(),

62

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

63

setgid() */

64

#include <netinet/in.h>

65

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

66

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

67

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

68

argp_state, struct argp,

69

argp_parse(), ARGP_KEY_ARG,

70

ARGP_KEY_END, ARGP_ERR_UNKNOWN */

45

SIOCSIFFLAGS */

71

46

72

/* Avahi */

73

/* All Avahi types, constants and functions

74

Avahi*, avahi_*,

75

AVAHI_* */

76

47

#include <avahi-core/core.h>

77

48

#include <avahi-core/lookup.h>

78

49

#include <avahi-core/log.h>

80

51

#include <avahi-common/malloc.h>

81

52

#include <avahi-common/error.h>

82

53

83

/* GnuTLS */

84

#include <gnutls/gnutls.h> /* All GnuTLS types, constants and

85

functions:

86

gnutls_*

87

init_gnutls_session(),

88

GNUTLS_* */

89

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

90

GNUTLS_OPENPGP_FMT_BASE64 */

54

/* Mandos client part */

55

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

56

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

57

struct in6_addr, inet_pton() */

58

#include <gnutls/gnutls.h> /* All GnuTLS stuff */

59

#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */

91

60

61

#include <unistd.h> /* close() */

62

#include <netinet/in.h>

63

#include <stdbool.h> /* true */

64

#include <string.h> /* memset */

65

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

66

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

67

#include <net/if.h> /* IF_NAMESIZE */

68

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

69

struct argp_state, struct argp,

70

argp_parse() */

92

71

/* GPGME */

93

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

94

functions:

95

gpgme_*

96

GPGME_PROTOCOL_OpenPGP,

97

GPG_ERR_NO_* */

72

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

73

#include <gpgme.h>

98

74

99

75

#define BUFFER_SIZE 256

100

76

101

77

bool debug = false;

102

static const char *keydir = "/conf/conf.d/mandos";

103

static const char mandos_protocol_version[] = "1";

104

const char *argp_program_version = "password-request 1.0";

78

const char *keydir = "/conf/conf.d/mandos";

79

const char *argp_program_version = "mandosclient 0.9";

105

80

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

81

const char mandos_protocol_version[] = "1";

106

82

107

/* Used for passing in values through the Avahi callback functions */

83

/* Used for passing in values through all the callback functions */

108

84

typedef struct {

109

85

AvahiSimplePoll *simple_poll;

110

86

AvahiServer *server;

114

90

const char *priority;

115

91

} mandos_context;

116

92

117

/*

118

* Make room in "buffer" for at least BUFFER_SIZE additional bytes.

119

* "buffer_capacity" is how much is currently allocated,

120

* "buffer_length" is how much is already used.

121

*/

122

93

size_t adjustbuffer(char **buffer, size_t buffer_length,

123

94

size_t buffer_capacity){

124

95

if (buffer_length + BUFFER_SIZE > buffer_capacity){

214

185

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

215

186

gpgme_strsource(rc), gpgme_strerror(rc));

216

187

plaintext_length = -1;

217

if (debug){

218

gpgme_decrypt_result_t result;

219

result = gpgme_op_decrypt_result(ctx);

220

if (result == NULL){

221

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

222

} else {

223

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

224

result->unsupported_algorithm);

225

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

226

result->wrong_key_usage);

227

if(result->file_name != NULL){

228

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

229

}

230

gpgme_recipient_t recipient;

231

recipient = result->recipients;

232

if(recipient){

233

while(recipient != NULL){

234

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

235

gpgme_pubkey_algo_name(recipient->pubkey_algo));

236

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

237

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

238

recipient->status == GPG_ERR_NO_SECKEY

239

? "No" : "Yes");

240

recipient = recipient->next;

241

}

242

}

243

}

244

}

245

188

goto decrypt_end;

246

189

}

247

190

249

192

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

250

193

}

251

194

195

if (debug){

196

gpgme_decrypt_result_t result;

197

result = gpgme_op_decrypt_result(ctx);

198

if (result == NULL){

199

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

200

} else {

201

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

202

result->unsupported_algorithm);

203

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

204

result->wrong_key_usage);

205

if(result->file_name != NULL){

206

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

207

}

208

gpgme_recipient_t recipient;

209

recipient = result->recipients;

210

if(recipient){

211

while(recipient != NULL){

212

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

213

gpgme_pubkey_algo_name(recipient->pubkey_algo));

214

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

215

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

216

recipient->status == GPG_ERR_NO_SECKEY

217

? "No" : "Yes");

218

recipient = recipient->next;

219

}

220

}

221

}

222

}

223

252

224

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

253

225

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

254

226

perror("pgpme_data_seek");

258

230

259

231

*plaintext = NULL;

260

232

while(true){

261

plaintext_capacity = adjustbuffer(plaintext,

262

(size_t)plaintext_length,

233

plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,

263

234

plaintext_capacity);

264

235

if (plaintext_capacity == 0){

265

236

perror("adjustbuffer");

301

272

}

302

273

303

274

static const char * safer_gnutls_strerror (int value) {

304

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

275

const char *ret = gnutls_strerror (value);

305

276

if (ret == NULL)

306

277

ret = "(unknown)";

307

278

return ret;

314

285

}

315

286

316

287

static int init_gnutls_global(mandos_context *mc,

317

const char *pubkeyfilename,

318

const char *seckeyfilename){

288

const char *pubkeyfile,

289

const char *seckeyfile){

319

290

int ret;

320

291

321

292

if(debug){

322

293

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

323

294

}

324

325

ret = gnutls_global_init();

326

if (ret != GNUTLS_E_SUCCESS) {

295

296

if ((ret = gnutls_global_init ())

297

!= GNUTLS_E_SUCCESS) {

327

298

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

328

299

safer_gnutls_strerror(ret));

329

300

return -1;

338

309

}

339

310

340

311

/* OpenPGP credentials */

341

gnutls_certificate_allocate_credentials(&mc->cred);

342

if (ret != GNUTLS_E_SUCCESS){

343

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

344

warning */

312

if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))

313

!= GNUTLS_E_SUCCESS) {

314

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

345

315

safer_gnutls_strerror(ret));

346

gnutls_global_deinit ();

347

316

return -1;

348

317

}

349

318

350

319

if(debug){

351

320

fprintf(stderr, "Attempting to use OpenPGP certificate %s"

352

" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,

353

seckeyfilename);

321

" and keyfile %s as GnuTLS credentials\n", pubkeyfile,

322

seckeyfile);

354

323

}

355

324

356

325

ret = gnutls_certificate_set_openpgp_key_file

357

(mc->cred, pubkeyfilename, seckeyfilename,

358

GNUTLS_OPENPGP_FMT_BASE64);

326

(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);

359

327

if (ret != GNUTLS_E_SUCCESS) {

360

328

fprintf(stderr,

361

329

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

362

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

330

" '%s')\n", ret, pubkeyfile, seckeyfile);

363

331

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

364

332

safer_gnutls_strerror(ret));

365

goto globalfail;

333

return -1;

366

334

}

367

335

368

336

/* GnuTLS server initialization */

370

338

if (ret != GNUTLS_E_SUCCESS) {

371

339

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

372

340

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

373

goto globalfail;

341

return -1;

374

342

}

375

343

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

376

344

if (ret != GNUTLS_E_SUCCESS) {

377

345

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

378

346

safer_gnutls_strerror(ret));

379

goto globalfail;

347

return -1;

380

348

}

381

349

382

350

gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);

383

351

384

352

return 0;

385

386

globalfail:

387

388

gnutls_certificate_free_credentials(mc->cred);

389

gnutls_global_deinit();

390

return -1;

391

392

353

}

393

354

394

static int init_gnutls_session(mandos_context *mc,

395

gnutls_session_t *session){

355

static int init_gnutls_session(mandos_context *mc, gnutls_session_t *session){

396

356

int ret;

397

357

/* GnuTLS session creation */

398

358

ret = gnutls_init(session, GNUTLS_SERVER);

408

368

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

409

369

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

410

370

safer_gnutls_strerror(ret));

411

gnutls_deinit (*session);

412

371

return -1;

413

372

}

414

373

}

418

377

if (ret != GNUTLS_E_SUCCESS) {

419

378

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

420

379

safer_gnutls_strerror(ret));

421

gnutls_deinit (*session);

422

380

return -1;

423

381

}

424

382

440

398

AvahiIfIndex if_index,

441

399

mandos_context *mc){

442

400

int ret, tcp_sd;

443

union { struct sockaddr in; struct sockaddr_in6 in6; } to;

401

struct sockaddr_in6 to;

444

402

char *buffer = NULL;

445

403

char *decrypted_buffer;

446

404

size_t buffer_length = 0;

450

408

int retval = 0;

451

409

char interface[IF_NAMESIZE];

452

410

gnutls_session_t session;

411

gnutls_dh_params_t dh_params;

453

412

454

413

ret = init_gnutls_session (mc, &session);

455

414

if (ret != 0){

457

416

}

458

417

459

418

if(debug){

460

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

461

"\n", ip, port);

419

fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",

420

ip, port);

462

421

}

463

422

464

423

tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);

475

434

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

476

435

}

477

436

478

memset(&to, 0, sizeof(to));

479

to.in6.sin6_family = AF_INET6;

437

memset(&to,0,sizeof(to)); /* Spurious warning */

438

to.sin6_family = AF_INET6;

480

439

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

481

440

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

482

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

441

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

483

442

if (ret < 0 ){

484

443

perror("inet_pton");

485

444

return -1;

488

447

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

489

448

return -1;

490

449

}

491

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

450

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

492

451

493

to.in6.sin6_scope_id = (uint32_t)if_index;

452

to.sin6_scope_id = (uint32_t)if_index;

494

453

495

454

if(debug){

496

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

497

port);

455

fprintf(stderr, "Connection to: %s, port %d\n", ip, port);

498

456

char addrstr[INET6_ADDRSTRLEN] = "";

499

if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,

457

if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,

500

458

sizeof(addrstr)) == NULL){

501

459

perror("inet_ntop");

502

460

} else {

506

464

}

507

465

}

508

466

509

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

467

ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));

510

468

if (ret < 0){

511

469

perror("connect");

512

470

return -1;

541

499

}

542

500

543

501

gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);

544

545

do{

546

ret = gnutls_handshake (session);

547

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

502

503

ret = gnutls_handshake (session);

548

504

549

505

if (ret != GNUTLS_E_SUCCESS){

550

506

if(debug){

563

519

}

564

520

565

521

while(true){

566

buffer_capacity = adjustbuffer(&buffer, buffer_length,

567

buffer_capacity);

522

buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);

568

523

if (buffer_capacity == 0){

569

524

perror("adjustbuffer");

570

525

retval = -1;

582

537

case GNUTLS_E_AGAIN:

583

538

break;

584

539

case GNUTLS_E_REHANDSHAKE:

585

do{

586

ret = gnutls_handshake (session);

587

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

540

ret = gnutls_handshake (session);

588

541

if (ret < 0){

589

542

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

590

543

gnutls_perror (ret);

635

588

} else {

636

589

retval = -1;

637

590

}

638

} else {

639

retval = -1;

640

591

}

641

592

642

593

/* Shutdown procedure */

645

596

free(buffer);

646

597

close(tcp_sd);

647

598

gnutls_deinit (session);

599

gnutls_certificate_free_credentials (mc->cred);

600

gnutls_global_deinit ();

648

601

return retval;

649

602

}

650

603

663

616

flags,

664

617

void* userdata) {

665

618

mandos_context *mc = userdata;

666

assert(r);

619

assert(r); /* Spurious warning */

667

620

668

621

/* Called whenever a service has been resolved successfully or

669

622

timed out */

681

634

char ip[AVAHI_ADDRESS_STR_MAX];

682

635

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

683

636

if(debug){

684

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

685

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

686

interface, port);

637

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

638

" port %d\n", name, host_name, ip, interface, port);

687

639

}

688

640

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

689

641

if (ret == 0){

690

avahi_simple_poll_quit(mc->simple_poll);

642

exit(EXIT_SUCCESS);

691

643

}

692

644

}

693

645

}

705

657

flags,

706

658

void* userdata) {

707

659

mandos_context *mc = userdata;

708

assert(b);

660

assert(b); /* Spurious warning */

709

661

710

662

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

711

663

is removed from the LAN */

747

699

748

700

/* Combines file name and path and returns the malloced new

749

701

string. some sane checks could/should be added */

750

static char *combinepath(const char *first, const char *second){

751

char *tmp;

752

int ret = asprintf(&tmp, "%s/%s", first, second);

753

if(ret < 0){

702

static const char *combinepath(const char *first, const char *second){

703

size_t f_len = strlen(first);

704

size_t s_len = strlen(second);

705

char *tmp = malloc(f_len + s_len + 2);

706

if (tmp == NULL){

754

707

return NULL;

755

708

}

709

if(f_len > 0){

710

memcpy(tmp, first, f_len); /* Spurious warning */

711

}

712

tmp[f_len] = '/';

713

if(s_len > 0){

714

memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */

715

}

716

tmp[f_len + 1 + s_len] = '\0';

756

717

return tmp;

757

718

}

758

719

769

730

gid_t gid;

770

731

char *connect_to = NULL;

771

732

AvahiIfIndex if_index = AVAHI_IF_UNSPEC;

772

char *pubkeyfilename = NULL;

773

char *seckeyfilename = NULL;

774

const char *pubkeyname = "pubkey.txt";

775

const char *seckeyname = "seckey.txt";

733

const char *pubkeyfile = "pubkey.txt";

734

const char *seckeyfile = "seckey.txt";

776

735

mandos_context mc = { .simple_poll = NULL, .server = NULL,

777

736

.dh_bits = 1024, .priority = "SECURE256"};

778

bool gnutls_initalized = false;

779

737

780

738

{

781

739

struct argp_option options[] = {

783

741

.doc = "Debug mode", .group = 3 },

784

742

{ .name = "connect", .key = 'c',

785

743

.arg = "IP",

786

.doc = "Connect directly to a sepcified mandos server",

787

.group = 1 },

744

.doc = "Connect directly to a sepcified mandos server", .group = 1 },

788

745

{ .name = "interface", .key = 'i',

789

746

.arg = "INTERFACE",

790

.doc = "Interface that Avahi will conntect through",

791

.group = 1 },

747

.doc = "Interface that Avahi will conntect through", .group = 1 },

792

748

{ .name = "keydir", .key = 'd',

793

749

.arg = "KEYDIR",

794

.doc = "Directory where the openpgp keyring is",

795

.group = 1 },

750

.doc = "Directory where the openpgp keyring is", .group = 1 },

796

751

{ .name = "seckey", .key = 's',

797

752

.arg = "SECKEY",

798

.doc = "Secret openpgp key for gnutls authentication",

799

.group = 1 },

753

.doc = "Secret openpgp key for gnutls authentication", .group = 1 },

800

754

{ .name = "pubkey", .key = 'p',

801

755

.arg = "PUBKEY",

802

.doc = "Public openpgp key for gnutls authentication",

803

.group = 2 },

756

.doc = "Public openpgp key for gnutls authentication", .group = 2 },

804

757

{ .name = "dh-bits", .key = 129,

805

758

.arg = "BITS",

806

.doc = "dh-bits to use in gnutls communication",

807

.group = 2 },

759

.doc = "dh-bits to use in gnutls communication", .group = 2 },

808

760

{ .name = "priority", .key = 130,

809

761

.arg = "PRIORITY",

810

762

.doc = "GNUTLS priority", .group = 1 },

812

764

};

813

765

814

766

815

error_t parse_opt (int key, char *arg,

816

struct argp_state *state) {

817

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

818

a pointer to our plugin list pointer. */

767

error_t parse_opt (int key, char *arg, struct argp_state *state) {

768

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

769

pointer to our plugin list pointer. */

819

770

switch (key) {

820

771

case 128:

821

772

debug = true;

830

781

keydir = arg;

831

782

break;

832

783

case 's':

833

seckeyname = arg;

784

seckeyfile = arg;

834

785

break;

835

786

case 'p':

836

pubkeyname = arg;

787

pubkeyfile = arg;

837

788

break;

838

789

case 129:

839

790

errno = 0;

848

799

break;

849

800

case ARGP_KEY_ARG:

850

801

argp_usage (state);

851

case ARGP_KEY_END:

852

802

break;

803

case ARGP_KEY_END:

804

break;

853

805

default:

854

806

return ARGP_ERR_UNKNOWN;

855

807

}

858

810

859

811

struct argp argp = { .options = options, .parser = parse_opt,

860

812

.args_doc = "",

861

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

862

" passwords from mandos server" };

863

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

864

if (ret == ARGP_ERR_UNKNOWN){

865

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

866

exitcode = EXIT_FAILURE;

867

goto end;

868

}

813

.doc = "Mandos client -- Get and decrypt passwords from mandos server" };

814

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

869

815

}

870

816

871

pubkeyfilename = combinepath(keydir, pubkeyname);

872

if (pubkeyfilename == NULL){

817

pubkeyfile = combinepath(keydir, pubkeyfile);

818

if (pubkeyfile == NULL){

873

819

perror("combinepath");

874

820

exitcode = EXIT_FAILURE;

875

821

goto end;

876

822

}

877

823

878

seckeyfilename = combinepath(keydir, seckeyname);

879

if (seckeyfilename == NULL){

824

seckeyfile = combinepath(keydir, seckeyfile);

825

if (seckeyfile == NULL){

880

826

perror("combinepath");

881

exitcode = EXIT_FAILURE;

882

827

goto end;

883

828

}

884

829

885

ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);

830

ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);

886

831

if (ret == -1){

887

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

888

exitcode = EXIT_FAILURE;

832

fprintf(stderr, "init_gnutls_global\n");

889

833

goto end;

890

} else {

891

gnutls_initalized = true;

892

}

893

894

/* If the interface is down, bring it up */

895

{

896

sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);

897

if(sd < 0) {

898

perror("socket");

899

exitcode = EXIT_FAILURE;

900

goto end;

901

}

902

strcpy(network.ifr_name, interface);

903

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

904

if(ret == -1){

905

perror("ioctl SIOCGIFFLAGS");

906

exitcode = EXIT_FAILURE;

907

goto end;

908

}

909

if((network.ifr_flags & IFF_UP) == 0){

910

network.ifr_flags |= IFF_UP;

911

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

912

if(ret == -1){

913

perror("ioctl SIOCSIFFLAGS");

914

exitcode = EXIT_FAILURE;

915

goto end;

916

}

917

}

918

close(sd);

919

}

920

834

}

835

921

836

uid = getuid();

922

837

gid = getgid();

923

838

924

839

ret = setuid(uid);

925

840

if (ret == -1){

926

841

perror("setuid");

964

879

goto end;

965

880

}

966

881

882

/* If the interface is down, bring it up */

883

{

884

sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);

885

if(sd < 0) {

886

perror("socket");

887

exitcode = EXIT_FAILURE;

888

goto end;

889

}

890

strcpy(network.ifr_name, interface); /* Spurious warning */

891

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

892

if(ret == -1){

893

perror("ioctl SIOCGIFFLAGS");

894

exitcode = EXIT_FAILURE;

895

goto end;

896

}

897

if((network.ifr_flags & IFF_UP) == 0){

898

network.ifr_flags |= IFF_UP;

899

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

900

if(ret == -1){

901

perror("ioctl SIOCSIFFLAGS");

902

exitcode = EXIT_FAILURE;

903

goto end;

904

}

905

}

906

close(sd);

907

}

908

967

909

if (not debug){

968

910

avahi_set_log_function(empty_log);

969

911

}

1041

983

1042

984

if (mc.simple_poll != NULL)

1043

985

avahi_simple_poll_free(mc.simple_poll);

1044

free(pubkeyfilename);

1045

free(seckeyfilename);

1046

1047

if (gnutls_initalized){

1048

gnutls_certificate_free_credentials(mc.cred);

1049

gnutls_global_deinit ();

1050

}

986

free(pubkeyfile);

987

free(seckeyfile);

1051

988

1052

989

return exitcode;

1053

990

}