/mandos/release : revision 237.2.201

43

stdout, ferror(), remove() */

44

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

45

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

46

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

47

srand(), strtof() */

46

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

47

strtof(), abort() */

48

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

49

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

50

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

63

strtoimax() */

64

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

65

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

66

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

66

#include <time.h> /* nanosleep(), time(), sleep() */

67

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

68

SIOCSIFFLAGS, if_indextoname(),

69

if_nametoindex(), IF_NAMESIZE */

72

*/

73

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

74

getuid(), getgid(), seteuid(),

75

setgid() */

75

setgid(), pause() */

76

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

77

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

78

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

82

#include <signal.h> /* sigemptyset(), sigaddset(),

83

sigaction(), SIGTERM, sig_atomic_t,

84

raise() */

85

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

86

EX_NOHOST, EX_IOERR, EX_PROTOCOL */

85

87

86

88

#ifdef __linux__

87

89

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

125

127

static const char mandos_protocol_version[] = "1";

126

128

const char *argp_program_version = "mandos-client " VERSION;

127

129

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

130

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

131

char *connect_to = NULL;

128

132

129

133

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

130

134

typedef struct {

544

548

struct sockaddr_in6 in6;

545

549

} to;

546

550

char *buffer = NULL;

547

char *decrypted_buffer;

551

char *decrypted_buffer = NULL;

548

552

size_t buffer_length = 0;

549

553

size_t buffer_capacity = 0;

550

554

size_t written;

551

int retval = 0;

555

int retval = -1;

552

556

gnutls_session_t session;

553

557

int pf; /* Protocol family */

554

558

559

errno = 0;

560

555

561

if(quit_now){

562

errno = EINTR;

556

563

return -1;

557

564

}

558

565

572

break;

566

573

default:

567

574

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

575

errno = EINVAL;

568

576

return -1;

569

577

}

570

578

580

588

581

589

tcp_sd = socket(pf, SOCK_STREAM, 0);

582

590

if(tcp_sd < 0){

591

int e = errno;

583

592

perror("socket");

584

retval = -1;

593

errno = e;

585

594

goto mandos_end;

586

595

}

587

596

588

597

if(quit_now){

589

retval = -1;

598

errno = EINTR;

590

599

goto mandos_end;

591

600

}

592

601

599

608

ret = inet_pton(af, ip, &to.in.sin_addr);

600

609

}

601

610

if(ret < 0 ){

611

int e = errno;

602

612

perror("inet_pton");

603

retval = -1;

613

errno = e;

604

614

goto mandos_end;

605

615

}

606

616

if(ret == 0){

617

int e = errno;

607

618

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

608

retval = -1;

619

errno = e;

609

620

goto mandos_end;

610

621

}

611

622

if(af == AF_INET6){

619

630

if(if_index == AVAHI_IF_UNSPEC){

620

631

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

621

632

" without a network interface\n");

622

retval = -1;

633

errno = EINVAL;

623

634

goto mandos_end;

624

635

}

625

636

/* Set the network interface number as scope */

632

643

}

633

644

634

645

if(quit_now){

635

retval = -1;

646

errno = EINTR;

636

647

goto mandos_end;

637

648

}

638

649

669

680

}

670

681

671

682

if(quit_now){

672

retval = -1;

683

errno = EINTR;

673

684

goto mandos_end;

674

685

}

675

686

679

690

ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */

680

691

}

681

692

if(ret < 0){

682

perror("connect");

683

retval = -1;

693

if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){

694

int e = errno;

695

perror("connect");

696

errno = e;

697

}

684

698

goto mandos_end;

685

699

}

686

700

687

701

if(quit_now){

688

retval = -1;

702

errno = EINTR;

689

703

goto mandos_end;

690

704

}

691

705

696

710

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

697

711

out_size - written));

698

712

if(ret == -1){

713

int e = errno;

699

714

perror("write");

700

retval = -1;

715

errno = e;

701

716

goto mandos_end;

702

717

}

703

718

written += (size_t)ret;

713

728

}

714

729

715

730

if(quit_now){

716

retval = -1;

731

errno = EINTR;

717

732

goto mandos_end;

718

733

}

719

734

}

723

738

}

724

739

725

740

if(quit_now){

726

retval = -1;

741

errno = EINTR;

727

742

goto mandos_end;

728

743

}

729

744

730

745

gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);

731

746

732

747

if(quit_now){

733

retval = -1;

748

errno = EINTR;

734

749

goto mandos_end;

735

750

}

736

751

737

752

do {

738

753

ret = gnutls_handshake(session);

739

754

if(quit_now){

740

retval = -1;

755

errno = EINTR;

741

756

goto mandos_end;

742

757

}

743

758

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

747

762

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

748

763

gnutls_perror(ret);

749

764

}

750

retval = -1;

765

errno = EPROTO;

751

766

goto mandos_end;

752

767

}

753

768

761

776

while(true){

762

777

763

778

if(quit_now){

764

retval = -1;

779

errno = EINTR;

765

780

goto mandos_end;

766

781

}

767

782

768

783

buffer_capacity = incbuffer(&buffer, buffer_length,

769

784

buffer_capacity);

770

785

if(buffer_capacity == 0){

786

int e = errno;

771

787

perror("incbuffer");

772

retval = -1;

788

errno = e;

773

789

goto mandos_end;

774

790

}

775

791

776

792

if(quit_now){

777

retval = -1;

793

errno = EINTR;

778

794

goto mandos_end;

779

795

}

780

796

793

809

ret = gnutls_handshake(session);

794

810

795

811

if(quit_now){

796

retval = -1;

812

errno = EINTR;

797

813

goto mandos_end;

798

814

}

799

815

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

800

816

if(ret < 0){

801

817

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

802

818

gnutls_perror(ret);

803

retval = -1;

819

errno = EPROTO;

804

820

goto mandos_end;

805

821

}

806

822

break;

807

823

default:

808

824

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

809

825

" encrypted session with Mandos server\n");

810

retval = -1;

811

826

gnutls_bye(session, GNUTLS_SHUT_RDWR);

827

errno = EIO;

812

828

goto mandos_end;

813

829

}

814

830

} else {

821

837

}

822

838

823

839

if(quit_now){

824

retval = -1;

840

errno = EINTR;

825

841

goto mandos_end;

826

842

}

827

843

828

844

do {

829

845

ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);

830

846

if(quit_now){

831

retval = -1;

847

errno = EINTR;

832

848

goto mandos_end;

833

849

}

834

850

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

843

859

written = 0;

844

860

while(written < (size_t) decrypted_buffer_size){

845

861

if(quit_now){

846

retval = -1;

862

errno = EINTR;

847

863

goto mandos_end;

848

864

}

849

865

851

867

(size_t)decrypted_buffer_size - written,

852

868

stdout);

853

869

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

870

int e = errno;

854

871

if(debug){

855

872

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

856

873

strerror(errno));

857

874

}

858

retval = -1;

859

break;

875

errno = e;

876

goto mandos_end;

860

877

}

861

878

written += (size_t)ret;

862

879

}

863

free(decrypted_buffer);

864

} else {

865

retval = -1;

880

retval = 0;

866

881

}

867

} else {

868

retval = -1;

869

882

}

870

883

871

884

/* Shutdown procedure */

872

885

873

886

mandos_end:

874

free(buffer);

875

if(tcp_sd >= 0){

876

ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));

877

}

878

if(ret == -1){

879

perror("close");

880

}

881

gnutls_deinit(session);

882

if(quit_now){

883

retval = -1;

887

{

888

int e = errno;

889

free(decrypted_buffer);

890

free(buffer);

891

if(tcp_sd >= 0){

892

ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));

893

}

894

if(ret == -1){

895

if(e == 0){

896

e = errno;

897

}

898

perror("close");

899

}

900

gnutls_deinit(session);

901

if(quit_now){

902

e = EINTR;

903

retval = -1;

904

}

905

errno = e;

884

906

}

885

907

return retval;

886

908

}

1002

1024

errno = old_errno;

1003

1025

}

1004

1026

1027

/*

1028

* This function determines if a directory entry in /sys/class/net

1029

* corresponds to an acceptable network device.

1030

* (This function is passed to scandir(3) as a filter function.)

1031

*/

1032

int good_interface(const struct dirent *if_entry){

1033

ssize_t ssret;

1034

char *flagname = NULL;

1035

int ret = asprintf(&flagname, "%s/%s/flags", sys_class_net,

1036

if_entry->d_name);

1037

if(ret < 0){

1038

perror("asprintf");

1039

return 0;

1040

}

1041

if(if_entry->d_name[0] == '.'){

1042

return 0;

1043

}

1044

int flags_fd = (int)TEMP_FAILURE_RETRY(open(flagname, O_RDONLY));

1045

if(flags_fd == -1){

1046

perror("open");

1047

return 0;

1048

}

1049

typedef short ifreq_flags; /* ifreq.ifr_flags in netdevice(7) */

1050

/* read line from flags_fd */

1051

ssize_t to_read = (sizeof(ifreq_flags)*2)+3; /* "0x1003\n" */

1052

char *flagstring = malloc((size_t)to_read+1); /* +1 for final \0 */

1053

flagstring[(size_t)to_read] = '\0';

1054

if(flagstring == NULL){

1055

perror("malloc");

1056

close(flags_fd);

1057

return 0;

1058

}

1059

while(to_read > 0){

1060

ssret = (ssize_t)TEMP_FAILURE_RETRY(read(flags_fd, flagstring,

1061

(size_t)to_read));

1062

if(ssret == -1){

1063

perror("read");

1064

free(flagstring);

1065

close(flags_fd);

1066

return 0;

1067

}

1068

to_read -= ssret;

1069

if(ssret == 0){

1070

break;

1071

}

1072

}

1073

close(flags_fd);

1074

intmax_t tmpmax;

1075

char *tmp;

1076

errno = 0;

1077

tmpmax = strtoimax(flagstring, &tmp, 0);

1078

if(errno != 0 or tmp == flagstring or (*tmp != '\0'

1079

and not (isspace(*tmp)))

1080

or tmpmax != (ifreq_flags)tmpmax){

1081

if(debug){

1082

fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",

1083

flagstring, if_entry->d_name);

1084

}

1085

free(flagstring);

1086

return 0;

1087

}

1088

free(flagstring);

1089

ifreq_flags flags = (ifreq_flags)tmpmax;

1090

/* Reject the loopback device */

1091

if(flags & IFF_LOOPBACK){

1092

if(debug){

1093

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

1094

if_entry->d_name);

1095

}

1096

return 0;

1097

}

1098

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

1099

if(connect_to != NULL and (flags & IFF_POINTOPOINT)){

1100

if(debug){

1101

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

1102

if_entry->d_name);

1103

}

1104

return 1;

1105

}

1106

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

1107

if(not (flags & IFF_BROADCAST)){

1108

if(debug){

1109

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

1110

if_entry->d_name);

1111

}

1112

return 0;

1113

}

1114

/* Accept this device */

1115

if(debug){

1116

fprintf(stderr, "Interface \"%s\" is acceptable\n",

1117

if_entry->d_name);

1118

}

1119

return 1;

1120

}

1121

1005

1122

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

1006

1123

AvahiSServiceBrowser *sb = NULL;

1007

1124

int error;

1009

1126

intmax_t tmpmax;

1010

1127

char *tmp;

1011

1128

int exitcode = EXIT_SUCCESS;

1012

const char *interface = "eth0";

1129

const char *interface = "";

1013

1130

struct ifreq network;

1014

1131

int sd = -1;

1015

1132

bool take_down_interface = false;

1016

1133

uid_t uid;

1017

1134

gid_t gid;

1018

char *connect_to = NULL;

1019

1135

char tempdir[] = "/tmp/mandosXXXXXX";

1020

1136

bool tempdir_created = false;

1021

1137

AvahiIfIndex if_index = AVAHI_IF_UNSPEC;

1084

1200

.arg = "SECONDS",

1085

1201

.doc = "Maximum delay to wait for interface startup",

1086

1202

.group = 2 },

1203

/*

1204

* These reproduce what we would get without ARGP_NO_HELP

1205

*/

1206

{ .name = "help", .key = '?',

1207

.doc = "Give this help list", .group = -1 },

1208

{ .name = "usage", .key = -3,

1209

.doc = "Give a short usage message", .group = -1 },

1210

{ .name = "version", .key = 'V',

1211

.doc = "Print program version", .group = -1 },

1087

1212

{ .name = NULL }

1088

1213

};

1089

1214

1090

1215

error_t parse_opt(int key, char *arg,

1091

1216

struct argp_state *state){

1217

errno = 0;

1092

1218

switch(key){

1093

1219

case 128: /* --debug */

1094

1220

debug = true;

1110

1236

tmpmax = strtoimax(arg, &tmp, 10);

1111

1237

if(errno != 0 or tmp == arg or *tmp != '\0'

1112

1238

or tmpmax != (typeof(mc.dh_bits))tmpmax){

1113

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

1114

exit(EXIT_FAILURE);

1239

argp_error(state, "Bad number of DH bits");

1115

1240

}

1116

1241

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

1117

1242

break;

1122

1247

errno = 0;

1123

1248

delay = strtof(arg, &tmp);

1124

1249

if(errno != 0 or tmp == arg or *tmp != '\0'){

1125

fprintf(stderr, "Bad delay\n");

1126

exit(EXIT_FAILURE);

1250

argp_error(state, "Bad delay");

1127

1251

}

1128

1252

break;

1129

case ARGP_KEY_ARG:

1130

argp_usage(state);

1131

case ARGP_KEY_END:

1253

/*

1254

* These reproduce what we would get without ARGP_NO_HELP

1255

*/

1256

case '?': /* --help */

1257

argp_state_help(state, state->out_stream,

1258

(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)

1259

& ~(unsigned int)ARGP_HELP_EXIT_OK);

1260

case -3: /* --usage */

1261

argp_state_help(state, state->out_stream,

1262

ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);

1263

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

1264

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

1265

exit(argp_err_exit_status);

1132

1266

break;

1133

1267

default:

1134

1268

return ARGP_ERR_UNKNOWN;

1135

1269

}

1136

return 0;

1270

return errno;

1137

1271

}

1138

1272

1139

1273

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

1140

1274

.args_doc = "",

1141

1275

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

1142

1276

" passwords from a Mandos server" };

1143

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

1144

if(ret == ARGP_ERR_UNKNOWN){

1145

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

1146

exitcode = EXIT_FAILURE;

1277

ret = argp_parse(&argp, argc, argv,

1278

ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);

1279

switch(ret){

1280

case 0:

1281

break;

1282

case ENOMEM:

1283

default:

1284

errno = ret;

1285

perror("argp_parse");

1286

exitcode = EX_OSERR;

1287

goto end;

1288

case EINVAL:

1289

exitcode = EX_USAGE;

1147

1290

goto end;

1148

1291

}

1149

1292

}

1151

1294

if(not debug){

1152

1295

avahi_set_log_function(empty_log);

1153

1296

}

1297

1298

if(interface[0] == '\0'){

1299

struct dirent **direntries;

1300

ret = scandir(sys_class_net, &direntries, good_interface,

1301

alphasort);

1302

if(ret >= 1){

1303

/* Pick the first good interface */

1304

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

1305

if(debug){

1306

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

1307

}

1308

if(interface == NULL){

1309

perror("malloc");

1310

free(direntries);

1311

exitcode = EXIT_FAILURE;

1312

goto end;

1313

}

1314

free(direntries);

1315

} else {

1316

free(direntries);

1317

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

1318

exitcode = EXIT_FAILURE;

1319

goto end;

1320

}

1321

}

1154

1322

1155

1323

/* Initialize Avahi early so avahi_simple_poll_quit() can be called

1156

1324

from the signal handler */

1159

1327

mc.simple_poll = avahi_simple_poll_new();

1160

1328

if(mc.simple_poll == NULL){

1161

1329

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

1162

exitcode = EXIT_FAILURE;

1330

exitcode = EX_UNAVAILABLE;

1163

1331

goto end;

1164

1332

}

1165

1333

1167

1335

ret = sigaddset(&sigterm_action.sa_mask, SIGINT);

1168

1336

if(ret == -1){

1169

1337

perror("sigaddset");

1170

exitcode = EXIT_FAILURE;

1338

exitcode = EX_OSERR;

1171

1339

goto end;

1172

1340

}

1173

1341

ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);

1174

1342

if(ret == -1){

1175

1343

perror("sigaddset");

1176

exitcode = EXIT_FAILURE;

1344

exitcode = EX_OSERR;

1177

1345

goto end;

1178

1346

}

1179

1347

ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);

1180

1348

if(ret == -1){

1181

1349

perror("sigaddset");

1182

exitcode = EXIT_FAILURE;

1350

exitcode = EX_OSERR;

1183

1351

goto end;

1184

1352

}

1185

1353

/* Need to check if the handler is SIG_IGN before handling:

1189

1357

ret = sigaction(SIGINT, NULL, &old_sigterm_action);

1190

1358

if(ret == -1){

1191

1359

perror("sigaction");

1192

return EXIT_FAILURE;

1360

return EX_OSERR;

1193

1361

}

1194

1362

if(old_sigterm_action.sa_handler != SIG_IGN){

1195

1363

ret = sigaction(SIGINT, &sigterm_action, NULL);

1196

1364

if(ret == -1){

1197

1365

perror("sigaction");

1198

exitcode = EXIT_FAILURE;

1366

exitcode = EX_OSERR;

1199

1367

goto end;

1200

1368

}

1201

1369

}

1202

1370

ret = sigaction(SIGHUP, NULL, &old_sigterm_action);

1203

1371

if(ret == -1){

1204

1372

perror("sigaction");

1205

return EXIT_FAILURE;

1373

return EX_OSERR;

1206

1374

}

1207

1375

if(old_sigterm_action.sa_handler != SIG_IGN){

1208

1376

ret = sigaction(SIGHUP, &sigterm_action, NULL);

1209

1377

if(ret == -1){

1210

1378

perror("sigaction");

1211

exitcode = EXIT_FAILURE;

1379

exitcode = EX_OSERR;

1212

1380

goto end;

1213

1381

}

1214

1382

}

1215

1383

ret = sigaction(SIGTERM, NULL, &old_sigterm_action);

1216

1384

if(ret == -1){

1217

1385

perror("sigaction");

1218

return EXIT_FAILURE;

1386

return EX_OSERR;

1219

1387

}

1220

1388

if(old_sigterm_action.sa_handler != SIG_IGN){

1221

1389

ret = sigaction(SIGTERM, &sigterm_action, NULL);

1222

1390

if(ret == -1){

1223

1391

perror("sigaction");

1224

exitcode = EXIT_FAILURE;

1392

exitcode = EX_OSERR;

1225

1393

goto end;

1226

1394

}

1227

1395

}

1228

1396

1229

1397

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

1230

if(interface[0] != '\0'){

1398

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

1231

1399

if_index = (AvahiIfIndex) if_nametoindex(interface);

1232

1400

if(if_index == 0){

1233

1401

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

1234

exitcode = EXIT_FAILURE;

1402

exitcode = EX_UNAVAILABLE;

1235

1403

goto end;

1236

1404

}

1237

1405

1248

1416

1249

1417

#ifdef __linux__

1250

1418

/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO

1251

messages to mess up the prompt */

1419

messages about the network interface to mess up the prompt */

1252

1420

ret = klogctl(8, NULL, 5);

1253

1421

bool restore_loglevel = true;

1254

1422

if(ret == -1){

1260

1428

sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);

1261

1429

if(sd < 0){

1262

1430

perror("socket");

1263

exitcode = EXIT_FAILURE;

1431

exitcode = EX_OSERR;

1264

1432

#ifdef __linux__

1265

1433

if(restore_loglevel){

1266

1434

ret = klogctl(7, NULL, 0);

1289

1457

}

1290

1458

}

1291

1459

#endif /* __linux__ */

1292

exitcode = EXIT_FAILURE;

1460

exitcode = EX_OSERR;

1293

1461

/* Lower privileges */

1294

1462

errno = 0;

1295

1463

ret = seteuid(uid);

1304

1472

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

1305

1473

if(ret == -1){

1306

1474

take_down_interface = false;

1307

perror("ioctl SIOCSIFFLAGS");

1308

exitcode = EXIT_FAILURE;

1475

perror("ioctl SIOCSIFFLAGS +IFF_UP");

1476

exitcode = EX_OSERR;

1309

1477

#ifdef __linux__

1310

1478

if(restore_loglevel){

1311

1479

ret = klogctl(7, NULL, 0);

1377

1545

ret = init_gnutls_global(pubkey, seckey);

1378

1546

if(ret == -1){

1379

1547

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

1380

exitcode = EXIT_FAILURE;

1548

exitcode = EX_UNAVAILABLE;

1381

1549

goto end;

1382

1550

} else {

1383

1551

gnutls_initialized = true;

1400

1568

1401

1569

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

1402

1570

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

1403

exitcode = EXIT_FAILURE;

1571

exitcode = EX_UNAVAILABLE;

1404

1572

goto end;

1405

1573

} else {

1406

1574

gpgme_initialized = true;

1416

1584

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

1417

1585

if(address == NULL){

1418

1586

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

1419

exitcode = EXIT_FAILURE;

1587

exitcode = EX_USAGE;

1420

1588

goto end;

1421

1589

}

1422

1590

1430

1598

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

1431

1599

or tmpmax != (uint16_t)tmpmax){

1432

1600

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

1433

exitcode = EXIT_FAILURE;

1601

exitcode = EX_USAGE;

1434

1602

goto end;

1435

1603

}

1436

1604

1452

1620

if(quit_now){

1453

1621

goto end;

1454

1622

}

1455

1456

ret = start_mandos_communication(address, port, if_index, af);

1457

if(ret < 0){

1458

exitcode = EXIT_FAILURE;

1459

} else {

1623

1624

while(not quit_now){

1625

ret = start_mandos_communication(address, port, if_index, af);

1626

if(quit_now or ret == 0){

1627

break;

1628

}

1629

sleep(15);

1630

};

1631

1632

if (not quit_now){

1460

1633

exitcode = EXIT_SUCCESS;

1461

1634

}

1635

1462

1636

goto end;

1463

1637

}

1464

1638

1488

1662

if(mc.server == NULL){

1489

1663

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

1490

1664

avahi_strerror(error));

1491

exitcode = EXIT_FAILURE;

1665

exitcode = EX_UNAVAILABLE;

1492

1666

goto end;

1493

1667

}

1494

1668

1503

1677

if(sb == NULL){

1504

1678

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

1505

1679

avahi_strerror(avahi_server_errno(mc.server)));

1506

exitcode = EXIT_FAILURE;

1680

exitcode = EX_UNAVAILABLE;

1507

1681

goto end;

1508

1682

}

1509

1683

1558

1732

if(ret == -1){

1559

1733

perror("ioctl SIOCGIFFLAGS");

1560

1734

} else if(network.ifr_flags & IFF_UP) {

1561

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

1735

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

1562

1736

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

1563

1737

if(ret == -1){

1564

perror("ioctl SIOCSIFFLAGS");

1738

perror("ioctl SIOCSIFFLAGS -IFF_UP");

1565

1739

}

1566

1740

}

1567

1741

ret = (int)TEMP_FAILURE_RETRY(close(sd));

1624

1798

if(quit_now){

1625

1799

sigemptyset(&old_sigterm_action.sa_mask);

1626

1800

old_sigterm_action.sa_handler = SIG_DFL;

1627

ret = sigaction(signal_received, &old_sigterm_action, NULL);

1801

ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,

1802

&old_sigterm_action,

1803

NULL));

1628

1804

if(ret == -1){

1629

1805

perror("sigaction");

1630

1806

}

1631

raise(signal_received);

1807

do {

1808

ret = raise(signal_received);

1809

} while(ret != 0 and errno == EINTR);

1810

if(ret != 0){

1811

perror("raise");

1812

abort();

1813

}

1814

TEMP_FAILURE_RETRY(pause());

1632

1815

}

1633

1816

1634

1817

return exitcode;