/mandos/release : revision 237.7.261

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Viewing changes to plugins.d/mandos-client.c

Committer: Teddy Hogeborn
Date: 2014-07-14 21:41:08 UTC
mto: (237.7.272 trunk)
mto: This revision was merged to the branch mainline in revision 319.
Revision ID: teddy@recompile.se-20140714214108-awg7u6gaiy7d40dz

mandos-monitor: New "verbose" mode to see less important log messages.

* mandos-monitor (MandosClientWidget.__init__): Log client creation.
  (MandosClientWidget.checker_completed): Log a successful checker.
  (MandosClientWidget.checker_started): Log starting of a checker.
  (UserInterface.__init__): New optional "log_level" argument.
  (UserInterface.log_message, UserInterface.log_message_raw): Take
                                                              optional
                                                              "level"
                                                              arg.
  (UserInterface.toggle_log_display): Log visibility change.
  (UserInterface.change_log_display): Log wrap mode change.
  (UserInterface.process_input): Show new "v" key in help message and
                                 process "v" key if pressed.
* mandos-monitor.xml (KEYS): Document new "v" key.

files removed:
plugin-helpers

plugin-helpers/mandos-client-iprouteadddel.c

files modified:
DBUS-API

INSTALL

Makefile

NEWS

TODO

common.ent

debian/changelog

debian/control

debian/mandos-client.README.Debian

initramfs-tools-hook

intro.xml

mandos

mandos-ctl

mandos-keygen

mandos-monitor

mandos-options.xml

mandos.conf

mandos.conf.xml

mandos.lsm

mandos.service

mandos.xml

plugin-runner.c

plugin-runner.xml

plugins.d/askpass-fifo.c

plugins.d/mandos-client.c

plugins.d/mandos-client.xml

Show diffs side-by-side

added added

removed removed

plugins.d/mandos-client.c

* "browse_callback", and parts of "main".

* Everything else is

* This program is free software: you can redistribute it and/or

* modify it under the terms of the GNU General Public License as

240

ret = clock_gettime(CLOCK_MONOTONIC, &(new_server->last_seen));

241

if(ret == -1){

242

perror_plus("clock_gettime");

243

#ifdef __GNUC__

244

#pragma GCC diagnostic push

245

#pragma GCC diagnostic ignored "-Wcast-qual"

246

#endif

247

free((char *)(new_server->ip));

248

#ifdef __GNUC__

249

#pragma GCC diagnostic pop

250

#endif

243

free(new_server->ip);

251

244

free(new_server);

252

245

return false;

253

246

}

493

486

return plaintext_length;

494

487

}

495

488

496

__attribute__((warn_unused_result, const))

497

static const char *safe_string(const char *str){

498

if(str == NULL)

499

return "(unknown)";

500

return str;

501

}

502

503

489

__attribute__((warn_unused_result))

504

490

static const char *safer_gnutls_strerror(int value){

505

491

const char *ret = gnutls_strerror(value);

506

return safe_string(ret);

492

if(ret == NULL)

493

ret = "(unknown)";

494

return ret;

507

495

}

508

496

509

497

/* GnuTLS log function callback */

518

506

const char *seckeyfilename,

519

507

mandos_context *mc){

520

508

int ret;

521

unsigned int uret;

522

509

523

510

if(debug){

524

511

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

575

562

safer_gnutls_strerror(ret));

576

563

goto globalfail;

577

564

}

578

if(mc->dh_bits == 0){

579

/* Find out the optimal number of DH bits */

580

/* Try to read the private key file */

581

gnutls_datum_t buffer = { .data = NULL, .size = 0 };

582

{

583

int secfile = open(seckeyfilename, O_RDONLY);

584

size_t buffer_capacity = 0;

585

while(true){

586

buffer_capacity = incbuffer((char **)&buffer.data,

587

(size_t)buffer.size,

588

(size_t)buffer_capacity);

589

if(buffer_capacity == 0){

590

perror_plus("incbuffer");

591

free(buffer.data);

592

buffer.data = NULL;

593

break;

594

}

595

ssize_t bytes_read = read(secfile, buffer.data + buffer.size,

596

BUFFER_SIZE);

597

/* EOF */

598

if(bytes_read == 0){

599

break;

600

}

601

/* check bytes_read for failure */

602

if(bytes_read < 0){

603

perror_plus("read");

604

free(buffer.data);

605

buffer.data = NULL;

606

break;

607

}

608

buffer.size += (unsigned int)bytes_read;

609

}

610

close(secfile);

611

}

612

/* If successful, use buffer to parse private key */

613

gnutls_sec_param_t sec_param = GNUTLS_SEC_PARAM_ULTRA;

614

if(buffer.data != NULL){

615

{

616

gnutls_openpgp_privkey_t privkey = NULL;

617

ret = gnutls_openpgp_privkey_init(&privkey);

618

if(ret != GNUTLS_E_SUCCESS){

619

fprintf_plus(stderr, "Error initializing OpenPGP key"

620

" structure: %s", safer_gnutls_strerror(ret));

621

free(buffer.data);

622

buffer.data = NULL;

623

} else {

624

ret = gnutls_openpgp_privkey_import(privkey, &buffer,

625

GNUTLS_OPENPGP_FMT_BASE64,

626

"", 0);

627

if(ret != GNUTLS_E_SUCCESS){

628

fprintf_plus(stderr, "Error importing OpenPGP key : %s",

629

safer_gnutls_strerror(ret));

630

privkey = NULL;

631

}

632

free(buffer.data);

633

buffer.data = NULL;

634

if(privkey != NULL){

635

/* Use private key to suggest an appropriate sec_param */

636

sec_param = gnutls_openpgp_privkey_sec_param(privkey);

637

gnutls_openpgp_privkey_deinit(privkey);

638

if(debug){

639

fprintf_plus(stderr, "This OpenPGP key implies using a"

640

" GnuTLS security parameter \"%s\".\n",

641

safe_string(gnutls_sec_param_get_name

642

(sec_param)));

643

}

644

}

645

}

646

}

647

if(sec_param == GNUTLS_SEC_PARAM_UNKNOWN){

648

/* Err on the side of caution */

649

sec_param = GNUTLS_SEC_PARAM_ULTRA;

650

if(debug){

651

fprintf_plus(stderr, "Falling back to security parameter"

652

" \"%s\"\n",

653

safe_string(gnutls_sec_param_get_name

654

(sec_param)));

655

}

656

}

657

}

658

uret = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, sec_param);

659

if(uret != 0){

660

mc->dh_bits = uret;

661

if(debug){

662

fprintf_plus(stderr, "A \"%s\" GnuTLS security parameter"

663

" implies %u DH bits; using that.\n",

664

safe_string(gnutls_sec_param_get_name

665

(sec_param)),

666

mc->dh_bits);

667

}

668

} else {

669

fprintf_plus(stderr, "Failed to get implied number of DH"

670

" bits for security parameter \"%s\"): %s\n",

671

safe_string(gnutls_sec_param_get_name(sec_param)),

672

safer_gnutls_strerror(ret));

673

goto globalfail;

674

}

675

} else if(debug){

676

fprintf_plus(stderr, "DH bits explicitly set to %u\n",

677

mc->dh_bits);

678

}

679

565

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

680

566

if(ret != GNUTLS_E_SUCCESS){

681

fprintf_plus(stderr, "Error in GnuTLS prime generation (%u bits):"

682

" %s\n", mc->dh_bits, safer_gnutls_strerror(ret));

567

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

568

safer_gnutls_strerror(ret));

683

569

goto globalfail;

684

570

}

685

571

757

643

static void empty_log(__attribute__((unused)) AvahiLogLevel level,

758

644

__attribute__((unused)) const char *txt){}

759

645

760

/* Set effective uid to 0, return errno */

761

__attribute__((warn_unused_result))

762

error_t raise_privileges(void){

763

error_t old_errno = errno;

764

error_t ret_errno = 0;

765

if(seteuid(0) == -1){

766

ret_errno = errno;

767

}

768

errno = old_errno;

769

return ret_errno;

770

}

771

772

/* Set effective and real user ID to 0. Return errno. */

773

__attribute__((warn_unused_result))

774

error_t raise_privileges_permanently(void){

775

error_t old_errno = errno;

776

error_t ret_errno = raise_privileges();

777

if(ret_errno != 0){

778

errno = old_errno;

779

return ret_errno;

780

}

781

if(setuid(0) == -1){

782

ret_errno = errno;

783

}

784

errno = old_errno;

785

return ret_errno;

786

}

787

788

/* Set effective user ID to unprivileged saved user ID */

789

__attribute__((warn_unused_result))

790

error_t lower_privileges(void){

791

error_t old_errno = errno;

792

error_t ret_errno = 0;

793

if(seteuid(uid) == -1){

794

ret_errno = errno;

795

}

796

errno = old_errno;

797

return ret_errno;

798

}

799

800

/* Lower privileges permanently */

801

__attribute__((warn_unused_result))

802

error_t lower_privileges_permanently(void){

803

error_t old_errno = errno;

804

error_t ret_errno = 0;

805

if(setuid(uid) == -1){

806

ret_errno = errno;

807

}

808

errno = old_errno;

809

return ret_errno;

810

}

811

812

/* Helper function to add_local_route() and delete_local_route() */

813

__attribute__((nonnull, warn_unused_result))

814

static bool add_delete_local_route(const bool add,

815

const char *address,

816

AvahiIfIndex if_index){

817

int ret;

818

char helper[] = "mandos-client-iprouteadddel";

819

char add_arg[] = "add";

820

char delete_arg[] = "delete";

821

char debug_flag[] = "--debug";

822

char *pluginhelperdir = getenv("MANDOSPLUGINHELPERDIR");

823

if(pluginhelperdir == NULL){

824

if(debug){

825

fprintf_plus(stderr, "MANDOSPLUGINHELPERDIR environment"

826

" variable not set; cannot run helper\n");

827

}

828

return false;

829

}

830

831

char interface[IF_NAMESIZE];

832

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

833

perror_plus("if_indextoname");

834

return false;

835

}

836

837

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

838

if(devnull == -1){

839

perror_plus("open(\"/dev/null\", O_RDONLY)");

840

return false;

841

}

842

pid_t pid = fork();

843

if(pid == 0){

844

/* Child */

845

/* Raise privileges */

846

errno = raise_privileges_permanently();

847

if(errno != 0){

848

perror_plus("Failed to raise privileges");

849

/* _exit(EX_NOPERM); */

850

} else {

851

/* Set group */

852

errno = 0;

853

ret = setgid(0);

854

if(ret == -1){

855

perror_plus("setgid");

856

_exit(EX_NOPERM);

857

}

858

/* Reset supplementary groups */

859

errno = 0;

860

ret = setgroups(0, NULL);

861

if(ret == -1){

862

perror_plus("setgroups");

863

_exit(EX_NOPERM);

864

}

865

}

866

ret = dup2(devnull, STDIN_FILENO);

867

if(ret == -1){

868

perror_plus("dup2(devnull, STDIN_FILENO)");

869

_exit(EX_OSERR);

870

}

871

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

872

if(ret == -1){

873

perror_plus("close");

874

_exit(EX_OSERR);

875

}

876

ret = dup2(STDERR_FILENO, STDOUT_FILENO);

877

if(ret == -1){

878

perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");

879

_exit(EX_OSERR);

880

}

881

int helperdir_fd = (int)TEMP_FAILURE_RETRY(open(pluginhelperdir,

882

O_RDONLY

883

| O_DIRECTORY

884

| O_PATH

885

| O_CLOEXEC));

886

if(helperdir_fd == -1){

887

perror_plus("open");

888

_exit(EX_UNAVAILABLE);

889

}

890

int helper_fd = (int)TEMP_FAILURE_RETRY(openat(helperdir_fd,

891

helper, O_RDONLY));

892

if(helper_fd == -1){

893

perror_plus("openat");

894

_exit(EX_UNAVAILABLE);

895

}

896

TEMP_FAILURE_RETRY(close(helperdir_fd));

897

#ifdef __GNUC__

898

#pragma GCC diagnostic push

899

#pragma GCC diagnostic ignored "-Wcast-qual"

900

#endif

901

if(fexecve(helper_fd, (char *const [])

902

{ helper, add ? add_arg : delete_arg, (char *)address,

903

interface, debug ? debug_flag : NULL, NULL },

904

environ) == -1){

905

#ifdef __GNUC__

906

#pragma GCC diagnostic pop

907

#endif

908

perror_plus("fexecve");

909

_exit(EXIT_FAILURE);

910

}

911

}

912

if(pid == -1){

913

perror_plus("fork");

914

return false;

915

}

916

int status;

917

pid_t pret = -1;

918

errno = 0;

919

do {

920

pret = waitpid(pid, &status, 0);

921

if(pret == -1 and errno == EINTR and quit_now){

922

int errno_raising = 0;

923

if((errno = raise_privileges()) != 0){

924

errno_raising = errno;

925

perror_plus("Failed to raise privileges in order to"

926

" kill helper program");

927

}

928

if(kill(pid, SIGTERM) == -1){

929

perror_plus("kill");

930

}

931

if((errno_raising == 0) and (errno = lower_privileges()) != 0){

932

perror_plus("Failed to lower privileges after killing"

933

" helper program");

934

}

935

return false;

936

}

937

} while(pret == -1 and errno == EINTR);

938

if(pret == -1){

939

perror_plus("waitpid");

940

return false;

941

}

942

if(WIFEXITED(status)){

943

if(WEXITSTATUS(status) != 0){

944

fprintf_plus(stderr, "Error: iprouteadddel exited"

945

" with status %d\n", WEXITSTATUS(status));

946

return false;

947

}

948

return true;

949

}

950

if(WIFSIGNALED(status)){

951

fprintf_plus(stderr, "Error: iprouteadddel died by"

952

" signal %d\n", WTERMSIG(status));

953

return false;

954

}

955

fprintf_plus(stderr, "Error: iprouteadddel crashed\n");

956

return false;

957

}

958

959

__attribute__((nonnull, warn_unused_result))

960

static bool add_local_route(const char *address,

961

AvahiIfIndex if_index){

962

if(debug){

963

fprintf_plus(stderr, "Adding route to %s\n", address);

964

}

965

return add_delete_local_route(true, address, if_index);

966

}

967

968

__attribute__((nonnull, warn_unused_result))

969

static bool delete_local_route(const char *address,

970

AvahiIfIndex if_index){

971

if(debug){

972

fprintf_plus(stderr, "Removing route to %s\n", address);

973

}

974

return add_delete_local_route(false, address, if_index);

975

}

976

977

646

/* Called when a Mandos server is found */

978

647

__attribute__((nonnull, warn_unused_result))

979

648

static int start_mandos_communication(const char *ip, in_port_t port,

990

659

int retval = -1;

991

660

gnutls_session_t session;

992

661

int pf; /* Protocol family */

993

bool route_added = false;

994

662

995

663

errno = 0;

996

664

1054

722

PRIuMAX "\n", ip, (uintmax_t)port);

1055

723

}

1056

724

1057

tcp_sd = socket(pf, SOCK_STREAM | SOCK_CLOEXEC, 0);

725

tcp_sd = socket(pf, SOCK_STREAM, 0);

1058

726

if(tcp_sd < 0){

1059

727

int e = errno;

1060

728

perror_plus("socket");

1149

817

goto mandos_end;

1150

818

}

1151

819

1152

while(true){

1153

if(af == AF_INET6){

1154

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

1155

sizeof(struct sockaddr_in6));

1156

} else {

1157

ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */

1158

sizeof(struct sockaddr_in));

1159

}

1160

if(ret < 0){

1161

if(errno == ENETUNREACH

1162

and if_index != AVAHI_IF_UNSPEC

1163

and connect_to == NULL

1164

and not route_added and

1165

((af == AF_INET6 and not

1166

IN6_IS_ADDR_LINKLOCAL(&(((struct sockaddr_in6 *)

1167

&to)->sin6_addr)))

1168

or (af == AF_INET and

1169

/* Not a a IPv4LL address */

1170

(ntohl(((struct sockaddr_in *)&to)->sin_addr.s_addr)

1171

& 0xFFFF0000L) != 0xA9FE0000L))){

1172

/* Work around Avahi bug - Avahi does not announce link-local

1173

addresses if it has a global address, so local hosts with

1174

*only* a link-local address (e.g. Mandos clients) cannot

1175

connect to a Mandos server announced by Avahi on a server

1176

host with a global address. Work around this by retrying

1177

with an explicit route added with the server's address.

1178

1179

Avahi bug reference:

1180

http://lists.freedesktop.org/archives/avahi/2010-February/001833.html

1181

https://bugs.debian.org/587961

1182

1183

if(debug){

1184

fprintf_plus(stderr, "Mandos server unreachable, trying"

1185

" direct route\n");

1186

}

1187

int e = errno;

1188

route_added = add_local_route(ip, if_index);

1189

if(route_added){

1190

continue;

1191

}

1192

errno = e;

1193

}

1194

if(errno != ECONNREFUSED or debug){

1195

int e = errno;

1196

perror_plus("connect");

1197

errno = e;

1198

}

1199

goto mandos_end;

1200

}

1201

1202

if(quit_now){

1203

errno = EINTR;

1204

goto mandos_end;

1205

}

1206

break;

820

if(af == AF_INET6){

821

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

822

sizeof(struct sockaddr_in6));

823

} else {

824

ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */

825

sizeof(struct sockaddr_in));

826

}

827

if(ret < 0){

828

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

829

int e = errno;

830

perror_plus("connect");

831

errno = e;

832

}

833

goto mandos_end;

834

}

835

836

if(quit_now){

837

errno = EINTR;

838

goto mandos_end;

1207

839

}

1208

840

1209

841

const char *out = mandos_protocol_version;

1392

1024

1393

1025

mandos_end:

1394

1026

{

1395

if(route_added){

1396

if(not delete_local_route(ip, if_index)){

1397

fprintf_plus(stderr, "Failed to delete local route to %s on"

1398

" interface %d", ip, if_index);

1399

}

1400

}

1401

1027

int e = errno;

1402

1028

free(decrypted_buffer);

1403

1029

free(buffer);

1443

1069

timed out */

1444

1070

1445

1071

if(quit_now){

1446

avahi_s_service_resolver_free(r);

1447

1072

return;

1448

1073

}

1449

1074

1829

1454

}

1830

1455

}

1831

1456

1457

/* Set effective uid to 0, return errno */

1458

__attribute__((warn_unused_result))

1459

error_t raise_privileges(void){

1460

error_t old_errno = errno;

1461

error_t ret_errno = 0;

1462

if(seteuid(0) == -1){

1463

ret_errno = errno;

1464

}

1465

errno = old_errno;

1466

return ret_errno;

1467

}

1468

1469

/* Set effective and real user ID to 0. Return errno. */

1470

__attribute__((warn_unused_result))

1471

error_t raise_privileges_permanently(void){

1472

error_t old_errno = errno;

1473

error_t ret_errno = raise_privileges();

1474

if(ret_errno != 0){

1475

errno = old_errno;

1476

return ret_errno;

1477

}

1478

if(setuid(0) == -1){

1479

ret_errno = errno;

1480

}

1481

errno = old_errno;

1482

return ret_errno;

1483

}

1484

1485

/* Set effective user ID to unprivileged saved user ID */

1486

__attribute__((warn_unused_result))

1487

error_t lower_privileges(void){

1488

error_t old_errno = errno;

1489

error_t ret_errno = 0;

1490

if(seteuid(uid) == -1){

1491

ret_errno = errno;

1492

}

1493

errno = old_errno;

1494

return ret_errno;

1495

}

1496

1497

/* Lower privileges permanently */

1498

__attribute__((warn_unused_result))

1499

error_t lower_privileges_permanently(void){

1500

error_t old_errno = errno;

1501

error_t ret_errno = 0;

1502

if(setuid(uid) == -1){

1503

ret_errno = errno;

1504

}

1505

errno = old_errno;

1506

return ret_errno;

1507

}

1508

1832

1509

__attribute__((nonnull))

1833

1510

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

1834

1511

const float delay){

1835

1512

struct dirent **direntries = NULL;

1836

1513

if(hookdir_fd == -1){

1837

hookdir_fd = open(hookdir, O_RDONLY | O_DIRECTORY | O_PATH

1838

| O_CLOEXEC);

1514

hookdir_fd = open(hookdir, O_RDONLY);

1839

1515

if(hookdir_fd == -1){

1840

1516

if(errno == ENOENT){

1841

1517

if(debug){

1866

1542

}

1867

1543

struct dirent *direntry;

1868

1544

int ret;

1869

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

1870

if(devnull == -1){

1871

perror_plus("open(\"/dev/null\", O_RDONLY)");

1872

return;

1873

}

1545

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

1874

1546

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

1875

1547

direntry = direntries[i];

1876

1548

if(debug){

1900

1572

perror_plus("setgroups");

1901

1573

_exit(EX_NOPERM);

1902

1574

}

1575

ret = dup2(devnull, STDIN_FILENO);

1576

if(ret == -1){

1577

perror_plus("dup2(devnull, STDIN_FILENO)");

1578

_exit(EX_OSERR);

1579

}

1580

ret = close(devnull);

1581

if(ret == -1){

1582

perror_plus("close");

1583

_exit(EX_OSERR);

1584

}

1585

ret = dup2(STDERR_FILENO, STDOUT_FILENO);

1586

if(ret == -1){

1587

perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");

1588

_exit(EX_OSERR);

1589

}

1903

1590

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

1904

1591

if(ret == -1){

1905

1592

perror_plus("setenv");

1940

1627

_exit(EX_OSERR);

1941

1628

}

1942

1629

}

1943

int hook_fd = (int)TEMP_FAILURE_RETRY(openat(hookdir_fd,

1944

direntry->d_name,

1945

O_RDONLY));

1630

int hook_fd = openat(hookdir_fd, direntry->d_name, O_RDONLY);

1946

1631

if(hook_fd == -1){

1947

1632

perror_plus("openat");

1948

1633

_exit(EXIT_FAILURE);

1951

1636

perror_plus("close");

1952

1637

_exit(EXIT_FAILURE);

1953

1638

}

1954

ret = dup2(devnull, STDIN_FILENO);

1955

if(ret == -1){

1956

perror_plus("dup2(devnull, STDIN_FILENO)");

1957

_exit(EX_OSERR);

1958

}

1959

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

1960

if(ret == -1){

1961

perror_plus("close");

1962

_exit(EX_OSERR);

1963

}

1964

ret = dup2(STDERR_FILENO, STDOUT_FILENO);

1965

if(ret == -1){

1966

perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");

1967

_exit(EX_OSERR);

1968

}

1969

1639

if(fexecve(hook_fd, (char *const []){ direntry->d_name, NULL },

1970

1640

environ) == -1){

1971

1641

perror_plus("fexecve");

1972

1642

_exit(EXIT_FAILURE);

1973

1643

}

1974

1644

} else {

1975

if(hook_pid == -1){

1976

perror_plus("fork");

1977

free(direntry);

1978

continue;

1979

}

1980

1645

int status;

1981

1646

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

1982

1647

perror_plus("waitpid");

1983

free(direntry);

1984

1648

continue;

1985

1649

}

1986

1650

if(WIFEXITED(status)){

1988

1652

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

1989

1653

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

1990

1654

WEXITSTATUS(status));

1991

free(direntry);

1992

1655

continue;

1993

1656

}

1994

1657

} else if(WIFSIGNALED(status)){

1995

1658

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

1996

1659

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

1997

1660

WTERMSIG(status));

1998

free(direntry);

1999

1661

continue;

2000

1662

} else {

2001

1663

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

2002

1664

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

2003

free(direntry);

2004

1665

continue;

2005

1666

}

2006

1667

}

2008

1669

fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",

2009

1670

direntry->d_name);

2010

1671

}

2011

free(direntry);

2012

1672

}

2013

1673

free(direntries);

2014

1674

if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){

2222

1882

}

2223

1883

2224

1884

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

2225

mandos_context mc = { .server = NULL, .dh_bits = 0,

1885

mandos_context mc = { .server = NULL, .dh_bits = 1024,

2226

1886

.priority = "SECURE256:!CTYPE-X.509:"

2227

"+CTYPE-OPENPGP:!RSA", .current_server = NULL,

1887

"+CTYPE-OPENPGP", .current_server = NULL,

2228

1888

.interfaces = NULL, .interfaces_size = 0 };

2229

1889

AvahiSServiceBrowser *sb = NULL;

2230

1890

error_t ret_errno;

2419

2079

goto end;

2420

2080

}

2421

2081

}

2422

2082

2423

2083

{

2424

2084

/* Work around Debian bug #633582:

2425

2085

<http://bugs.debian.org/633582> */

2452

2112

TEMP_FAILURE_RETRY(close(seckey_fd));

2453

2113

}

2454

2114

}

2455

2115

2456

2116

if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){

2457

2117

int pubkey_fd = open(pubkey, O_RDONLY);

2458

2118

if(pubkey_fd == -1){

2473

2133

TEMP_FAILURE_RETRY(close(pubkey_fd));

2474

2134

}

2475

2135

}

2476

2136

2477

2137

/* Lower privileges */

2478

2138

ret_errno = lower_privileges();

2479

2139

if(ret_errno != 0){

2608

2268

if(ret_errno != 0){

2609

2269

errno = ret_errno;

2610

2270

perror_plus("argz_add");

2611

free(direntries[i]);

2612

2271

continue;

2613

2272

}

2614

2273

if(debug){

2615

2274

fprintf_plus(stderr, "Will use interface \"%s\"\n",

2616

2275

direntries[i]->d_name);

2617

2276

}

2618

free(direntries[i]);

2619

2277

}

2620

2278

free(direntries);

2621

2279

} else {

2891

2549

mc.current_server->prev->next = NULL;

2892

2550

while(mc.current_server != NULL){

2893

2551

server *next = mc.current_server->next;

2894

#ifdef __GNUC__

2895

#pragma GCC diagnostic push

2896

#pragma GCC diagnostic ignored "-Wcast-qual"

2897

#endif

2898

free((char *)(mc.current_server->ip));

2899

#ifdef __GNUC__

2900

#pragma GCC diagnostic pop

2901

#endif

2902

2552

free(mc.current_server);

2903

2553

mc.current_server = next;

2904

2554

}

2948

2598

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

2949

2599

if(tempdir != NULL){

2950

2600

struct dirent **direntries = NULL;

2951

int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY

2952

| O_NOFOLLOW

2953

| O_DIRECTORY

2954

| O_PATH));

2601

int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY |

2602

O_NOFOLLOW));

2955

2603

if(tempdir_fd == -1){

2956

2604

perror_plus("open");

2957

2605

} else {

2975

2623

" \"%s\", 0): %s\n", tempdir,

2976

2624

direntries[i]->d_name, strerror(errno));

2977

2625

}

2978

free(direntries[i]);

2979

2626

}

2980

2627

2981

2628

/* need to clean even if 0 because man page doesn't specify */

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