/mandos/trunk : revision 505.2.6

261

262

rc = gpgme_data_new_from_fd(&pgp_data, fd);

263

if(rc != GPG_ERR_NO_ERROR){

264

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

265

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

264

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

266

265

gpgme_strsource(rc), gpgme_strerror(rc));

267

266

return false;

268

267

}

269

268

270

269

rc = gpgme_op_import(mc.ctx, pgp_data);

271

270

if(rc != GPG_ERR_NO_ERROR){

272

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

273

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

271

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

274

272

gpgme_strsource(rc), gpgme_strerror(rc));

275

273

return false;

276

274

}

284

282

}

285

283

286

284

if(debug){

287

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

288

"Initializing GPGME\n");

285

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

289

286

}

290

287

291

288

/* Init GPGME */

292

289

gpgme_check_version(NULL);

293

290

rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);

294

291

if(rc != GPG_ERR_NO_ERROR){

295

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

296

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

292

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

297

293

gpgme_strsource(rc), gpgme_strerror(rc));

298

294

return false;

299

295

}

301

297

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

302

298

rc = gpgme_get_engine_info(&engine_info);

303

299

if(rc != GPG_ERR_NO_ERROR){

304

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

305

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

300

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

306

301

gpgme_strsource(rc), gpgme_strerror(rc));

307

302

return false;

308

303

}

315

310

engine_info = engine_info->next;

316

311

}

317

312

if(engine_info == NULL){

318

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

319

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

313

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

320

314

return false;

321

315

}

322

316

323

317

/* Create new GPGME "context" */

324

318

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

325

319

if(rc != GPG_ERR_NO_ERROR){

326

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

320

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

327

321

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

328

322

gpgme_strerror(rc));

329

323

return false;

350

344

ssize_t plaintext_length = 0;

351

345

352

346

if(debug){

353

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

354

"Trying to decrypt OpenPGP data\n");

347

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

355

348

}

356

349

357

350

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

358

351

rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,

359

352

0);

360

353

if(rc != GPG_ERR_NO_ERROR){

361

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

362

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

354

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

363

355

gpgme_strsource(rc), gpgme_strerror(rc));

364

356

return -1;

365

357

}

367

359

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

368

360

rc = gpgme_data_new(&dh_plain);

369

361

if(rc != GPG_ERR_NO_ERROR){

370

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

362

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

371

363

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

372

364

gpgme_strsource(rc), gpgme_strerror(rc));

373

365

gpgme_data_release(dh_crypto);

378

370

data buffer */

379

371

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

380

372

if(rc != GPG_ERR_NO_ERROR){

381

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

382

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

373

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

383

374

gpgme_strsource(rc), gpgme_strerror(rc));

384

375

plaintext_length = -1;

385

376

if(debug){

386

377

gpgme_decrypt_result_t result;

387

378

result = gpgme_op_decrypt_result(mc.ctx);

388

379

if(result == NULL){

389

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

390

"gpgme_op_decrypt_result failed\n");

380

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

391

381

} else {

392

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

393

"Unsupported algorithm: %s\n",

382

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

394

383

result->unsupported_algorithm);

395

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

396

"Wrong key usage: %u\n",

384

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

397

385

result->wrong_key_usage);

398

386

if(result->file_name != NULL){

399

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

400

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

387

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

401

388

}

402

389

gpgme_recipient_t recipient;

403

390

recipient = result->recipients;

404

391

while(recipient != NULL){

405

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

406

"Public key algorithm: %s\n",

392

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

407

393

gpgme_pubkey_algo_name(recipient->pubkey_algo));

408

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

409

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

410

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

411

"Secret key available: %s\n",

394

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

395

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

412

396

recipient->status == GPG_ERR_NO_SECKEY

413

397

? "No" : "Yes");

414

398

recipient = recipient->next;

419

403

}

420

404

421

405

if(debug){

422

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

423

"Decryption of OpenPGP data succeeded\n");

406

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

424

407

}

425

408

426

409

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

457

440

}

458

441

459

442

if(debug){

460

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

461

"Decrypted password is: ");

443

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

462

444

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

463

445

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

464

446

}

486

468

/* GnuTLS log function callback */

487

469

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

488

470

const char* string){

489

fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);

471

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

490

472

}

491

473

492

474

static int init_gnutls_global(const char *pubkeyfilename,

494

476

int ret;

495

477

496

478

if(debug){

497

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

498

"Initializing GnuTLS\n");

479

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

499

480

}

500

481

501

482

ret = gnutls_global_init();

502

483

if(ret != GNUTLS_E_SUCCESS){

503

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

504

"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));

484

fprintf_plus(stderr, "GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));

505

485

return -1;

506

486

}

507

487

516

496

/* OpenPGP credentials */

517

497

ret = gnutls_certificate_allocate_credentials(&mc.cred);

518

498

if(ret != GNUTLS_E_SUCCESS){

519

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

520

"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));

499

fprintf_plus(stderr, "GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));

521

500

gnutls_global_deinit();

522

501

return -1;

523

502

}

524

503

525

504

if(debug){

526

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

527

"Attempting to use OpenPGP public key %s and"

505

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

528

506

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

529

507

seckeyfilename);

530

508

}

533

511

(mc.cred, pubkeyfilename, seckeyfilename,

534

512

GNUTLS_OPENPGP_FMT_BASE64);

535

513

if(ret != GNUTLS_E_SUCCESS){

536

fprintf(stderr,

537

"Mandos plugin mandos-client: "

538

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

539

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

540

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

541

"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));

514

fprintf_plus(stderr,

515

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

516

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

517

fprintf_plus(stderr, "The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));

542

518

goto globalfail;

543

519

}

544

520

545

521

/* GnuTLS server initialization */

546

522

ret = gnutls_dh_params_init(&mc.dh_params);

547

523

if(ret != GNUTLS_E_SUCCESS){

548

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

549

"Error in GnuTLS DH parameter initialization:"

524

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

550

525

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

551

526

goto globalfail;

552

527

}

553

528

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

554

529

if(ret != GNUTLS_E_SUCCESS){

555

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

556

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

530

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

557

531

safer_gnutls_strerror(ret));

558

532

goto globalfail;

559

533

}

580

554

}

581

555

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

582

556

if(ret != GNUTLS_E_SUCCESS){

583

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

584

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

557

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

585

558

safer_gnutls_strerror(ret));

586

559

}

587

560

595

568

}

596

569

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

597

570

if(ret != GNUTLS_E_SUCCESS){

598

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

599

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

600

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

601

"GnuTLS error: %s\n", safer_gnutls_strerror(ret));

571

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

572

fprintf_plus(stderr, "GnuTLS error: %s\n", safer_gnutls_strerror(ret));

602

573

gnutls_deinit(*session);

603

574

return -1;

604

575

}

613

584

}

614

585

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

615

586

if(ret != GNUTLS_E_SUCCESS){

616

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

617

"Error setting GnuTLS credentials: %s\n",

587

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

618

588

safer_gnutls_strerror(ret));

619

589

gnutls_deinit(*session);

620

590

return -1;

666

636

pf = PF_INET;

667

637

break;

668

638

default:

669

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

670

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

639

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

671

640

errno = EINVAL;

672

641

return -1;

673

642

}

678

647

}

679

648

680

649

if(debug){

681

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

682

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

650

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

683

651

"\n", ip, port);

684

652

}

685

653

712

680

}

713

681

if(ret == 0){

714

682

int e = errno;

715

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

716

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

683

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

717

684

errno = e;

718

685

goto mandos_end;

719

686

}

726

693

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

727

694

-Wunreachable-code*/

728

695

if(if_index == AVAHI_IF_UNSPEC){

729

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

730

"An IPv6 link-local address is incomplete"

696

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

731

697

" without a network interface\n");

732

698

errno = EINVAL;

733

699

goto mandos_end;

752

718

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

753

719

perror_plus("if_indextoname");

754

720

} else {

755

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

756

"Connection to: %s%%%s, port %" PRIu16 "\n",

721

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

757

722

ip, interface, port);

758

723

}

759

724

} else {

760

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

761

"Connection to: %s, port %" PRIu16 "\n", ip, port);

725

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

762

726

}

763

727

char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?

764

728

INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";

774

738

perror_plus("inet_ntop");

775

739

} else {

776

740

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

777

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

778

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

741

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

779

742

}

780

743

}

781

744

}

835

798

}

836

799

837

800

if(debug){

838

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

839

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

801

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

840

802

}

841

803

842

804

if(quit_now){

862

824

863

825

if(ret != GNUTLS_E_SUCCESS){

864

826

if(debug){

865

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

866

"*** GnuTLS Handshake failed ***\n");

827

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

867

828

gnutls_perror(ret);

868

829

}

869

830

errno = EPROTO;

873

834

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

874

835

875

836

if(debug){

876

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

877

"Retrieving OpenPGP encrypted password from %s\n", ip);

837

fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from %s\n", ip);

878

838

}

879

839

880

840

while(true){

918

878

}

919

879

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

920

880

if(ret < 0){

921

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

922

"*** GnuTLS Re-handshake failed ***\n");

881

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

923

882

gnutls_perror(ret);

924

883

errno = EPROTO;

925

884

goto mandos_end;

926

885

}

927

886

break;

928

887

default:

929

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

930

"Unknown error while reading data from"

888

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

931

889

" encrypted session with Mandos server\n");

932

890

gnutls_bye(session, GNUTLS_SHUT_RDWR);

933

891

errno = EIO;

939

897

}

940

898

941

899

if(debug){

942

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

943

"Closing TLS session\n");

900

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

944

901

}

945

902

946

903

if(quit_now){

975

932

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

976

933

int e = errno;

977

934

if(debug){

978

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

979

"Error writing encrypted data: %s\n",

935

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

980

936

strerror(errno));

981

937

}

982

938

errno = e;

1040

996

switch(event){

1041

997

default:

1042

998

case AVAHI_RESOLVER_FAILURE:

1043

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

1044

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

999

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

1045

1000

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

1046

1001

avahi_strerror(avahi_server_errno(mc.server)));

1047

1002

break;

1051

1006

char ip[AVAHI_ADDRESS_STR_MAX];

1052

1007

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

1053

1008

if(debug){

1054

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

1055

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

1009

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

1056

1010

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

1057

1011

ip, (intmax_t)interface, port);

1058

1012

}

1092

1046

default:

1093

1047

case AVAHI_BROWSER_FAILURE:

1094

1048

1095

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

1096

"(Avahi browser) %s\n",

1049

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

1097

1050

avahi_strerror(avahi_server_errno(mc.server)));

1098

1051

avahi_simple_poll_quit(mc.simple_poll);

1099

1052

return;

1107

1060

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

1108

1061

name, type, domain, protocol, 0,

1109

1062

resolve_callback, NULL) == NULL)

1110

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

1111

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

1063

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

1112

1064

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

1113

1065

break;

1114

1066

1118

1070

case AVAHI_BROWSER_ALL_FOR_NOW:

1119

1071

case AVAHI_BROWSER_CACHE_EXHAUSTED:

1120

1072

if(debug){

1121

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

1122

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

1073

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

1123

1074

}

1124

1075

break;

1125

1076

}

1164

1115

/* Reject the loopback device */

1165

1116

if(ifr->ifr_flags & IFF_LOOPBACK){

1166

1117

if(debug){

1167

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

1168

"Rejecting loopback interface \"%s\"\n", ifname);

1118

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

1169

1119

}

1170

1120

return false;

1171

1121

}

1172

1122

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

1173

1123

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

1174

1124

if(debug){

1175

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

1176

"Accepting point-to-point interface \"%s\"\n", ifname);

1125

fprintf_plus(stderr, "Accepting point-to-point interface \"%s\"\n", ifname);

1177

1126

}

1178

1127

return true;

1179

1128

}

1180

1129

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

1181

1130

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

1182

1131

if(debug){

1183

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

1184

"Rejecting non-broadcast interface \"%s\"\n", ifname);

1132

fprintf_plus(stderr, "Rejecting non-broadcast interface \"%s\"\n", ifname);

1185

1133

}

1186

1134

return false;

1187

1135

}

1188

1136

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

1189

1137

if(ifr->ifr_flags & IFF_NOARP){

1190

1138

if(debug){

1191

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

1192

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

1139

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

1193

1140

}

1194

1141

return false;

1195

1142

}

1196

1143

1197

1144

/* Accept this device */

1198

1145

if(debug){

1199

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

1200

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

1146

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

1201

1147

}

1202

1148

return true;

1203

1149

}

1215

1161

struct ifreq ifr;

1216

1162

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

1217

1163

if(debug){

1218

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

1219

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

1164

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

1220

1165

if_entry->d_name);

1221

1166

}

1222

1167

return 0;

1241

1186

struct ifreq ifr;

1242

1187

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

1243

1188

if(debug){

1244

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

1245

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

1189

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

1246

1190

if_entry->d_name);

1247

1191

}

1248

1192

return 0;

1251

1195

/* Reject down interfaces */

1252

1196

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

1253

1197

if(debug){

1254

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

1255

"Rejecting down interface \"%s\"\n",

1198

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

1256

1199

if_entry->d_name);

1257

1200

}

1258

1201

return 0;

1261

1204

/* Reject non-running interfaces */

1262

1205

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

1263

1206

if(debug){

1264

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

1265

"Rejecting non-running interface \"%s\"\n",

1207

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

1266

1208

if_entry->d_name);

1267

1209

}

1268

1210

return 0;

1303

1245

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

1304

1246

/* Contains non-allowed characters */

1305

1247

if(debug){

1306

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

1307

"Ignoring hook \"%s\" with bad name\n",

1248

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

1308

1249

direntry->d_name);

1309

1250

}

1310

1251

return 0;

1327

1268

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

1328

1269

/* Not a regular file */

1329

1270

if(debug){

1330

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

1331

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

1271

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

1332

1272

direntry->d_name);

1333

1273

}

1334

1274

return 0;

1336

1276

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

1337

1277

/* Not executable */

1338

1278

if(debug){

1339

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

1340

"Ignoring hook \"%s\" - not executable\n",

1279

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

1341

1280

direntry->d_name);

1342

1281

}

1343

1282

return 0;

1354

1293

while(true){

1355

1294

if(mc.current_server == NULL){

1356

1295

if (debug){

1357

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

1358

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

1296

fprintf_plus(stderr, "Wait until first server is found. No timeout!\n");

1359

1297

}

1360

1298

ret = avahi_simple_poll_iterate(s, -1);

1361

1299

} else {

1362

1300

if (debug){

1363

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

1364

"Check current_server if we should run it,"

1301

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

1365

1302

" or wait\n");

1366

1303

}

1367

1304

/* the current time */

1384

1321

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

1385

1322

1386

1323

if (debug){

1387

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

1388

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

1324

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

1389

1325

}

1390

1326

1391

1327

if(block_time <= 0){

1581

1517

argp_state_help(state, state->out_stream,

1582

1518

ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);

1583

1519

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

1584

fprintf(state->out_stream, "Mandos plugin mandos-client: ");

1585

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

1520

fprintf_plus(state->out_stream, "Mandos plugin mandos-client: ");

1521

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

1586

1522

exit(argp_err_exit_status);

1587

1523

break;

1588

1524

default:

1740

1676

}

1741

1677

if(WIFEXITED(status)){

1742

1678

if(WEXITSTATUS(status) != 0){

1743

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

1744

"Warning: network hook \"%s\" exited"

1679

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

1745

1680

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

1746

1681

WEXITSTATUS(status));

1747

1682

free(fullname);

1748

1683

continue;

1749

1684

}

1750

1685

} else if(WIFSIGNALED(status)){

1751

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

1752

"Warning: network hook \"%s\" died by"

1686

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

1753

1687

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

1754

1688

WTERMSIG(status));

1755

1689

free(fullname);

1756

1690

continue;

1757

1691

} else {

1758

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

1759

"Warning: network hook \"%s\" crashed\n",

1692

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

1760

1693

direntry->d_name);

1761

1694

free(fullname);

1762

1695

continue;

1790

1723

/* Pick the first interface returned */

1791

1724

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

1792

1725

if(debug){

1793

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

1794

"Using interface \"%s\"\n", interface);

1726

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

1795

1727

}

1796

1728

if(interface == NULL){

1797

1729

perror_plus("malloc");

1802

1734

free(direntries);

1803

1735

} else {

1804

1736

free(direntries);

1805

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

1806

"Could not find a network interface\n");

1737

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

1807

1738

exitcode = EXIT_FAILURE;

1808

1739

goto end;

1809

1740

}

1815

1746

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

1816

1747

mc.simple_poll = avahi_simple_poll_new();

1817

1748

if(mc.simple_poll == NULL){

1818

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

1819

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

1749

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

1820

1750

exitcode = EX_UNAVAILABLE;

1821

1751

goto end;

1822

1752

}

1888

1818

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

1889

1819

if_index = (AvahiIfIndex) if_nametoindex(interface);

1890

1820

if(if_index == 0){

1891

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

1892

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

1821

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

1893

1822

exitcode = EX_UNAVAILABLE;

1894

1823

goto end;

1895

1824

}

2036

1965

2037

1966

ret = init_gnutls_global(pubkey, seckey);

2038

1967

if(ret == -1){

2039

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

2040

"init_gnutls_global failed\n");

1968

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

2041

1969

exitcode = EX_UNAVAILABLE;

2042

1970

goto end;

2043

1971

} else {

2059

1987

}

2060

1988

2061

1989

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

2062

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

2063

"init_gpgme failed\n");

1990

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

2064

1991

exitcode = EX_UNAVAILABLE;

2065

1992

goto end;

2066

1993

} else {

2076

2003

/* (Mainly meant for debugging) */

2077

2004

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

2078

2005

if(address == NULL){

2079

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

2080

"No colon in address\n");

2006

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

2081

2007

exitcode = EX_USAGE;

2082

2008

goto end;

2083

2009

}

2091

2017

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

2092

2018

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

2093

2019

or tmpmax != (uint16_t)tmpmax){

2094

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

2095

"Bad port number\n");

2020

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

2096

2021

exitcode = EX_USAGE;

2097

2022

goto end;

2098

2023

}

2128

2053

break;

2129

2054

}

2130

2055

if(debug){

2131

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

2132

"Retrying in %d seconds\n", (int)retry_interval);

2056

fprintf_plus(stderr, "Retrying in %d seconds\n", (int)retry_interval);

2133

2057

}

2134

2058

sleep((int)retry_interval);

2135

2059

}

2165

2089

2166

2090

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

2167

2091

if(mc.server == NULL){

2168

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

2169

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

2092

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

2170

2093

avahi_strerror(error));

2171

2094

exitcode = EX_UNAVAILABLE;

2172

2095

goto end;

2181

2104

AVAHI_PROTO_UNSPEC, "_mandos._tcp",

2182

2105

NULL, 0, browse_callback, NULL);

2183

2106

if(sb == NULL){

2184

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

2185

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

2107

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

2186

2108

avahi_strerror(avahi_server_errno(mc.server)));

2187

2109

exitcode = EX_UNAVAILABLE;

2188

2110

goto end;

2195

2117

/* Run the main loop */

2196

2118

2197

2119

if(debug){

2198

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

2199

"Starting Avahi loop search\n");

2120

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

2200

2121

}

2201

2122

2202

2123

ret = avahi_loop_with_timeout(mc.simple_poll,

2203

2124

(int)(retry_interval * 1000));

2204

2125

if(debug){

2205

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

2206

"avahi_loop_with_timeout exited %s\n",

2126

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

2207

2127

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

2208

2128

}

2209

2129

2210

2130

end:

2211

2131

2212

2132

if(debug){

2213

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

2214

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

2133

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

2215

2134

}

2216

2135

2217

2136

/* Cleanup things */

2297

2216

}

2298

2217

ret = remove(fullname);

2299

2218

if(ret == -1){

2300

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

2301

"remove(\"%s\"): %s\n", fullname, strerror(errno));

2219

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

2302

2220

}

2303

2221

free(fullname);

2304

2222

}