/mandos/release : revision 24.1.66

21

* Contact the authors at <mandos@fukt.bsnet.se>.

22

*/

23

24

#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */

25

24

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

25

asprintf() */

26

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

27

#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,

28

EXIT_SUCCESS, realloc() */

51

close() */

52

#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,

53

FD_CLOEXEC */

54

#include <string.h> /* strtok, strlen(), strcpy(),

55

strcat() */

54

#include <string.h> /* strsep, strlen(), asprintf() */

56

55

#include <errno.h> /* errno */

57

56

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

58

57

argp_state, struct argp,

59

58

argp_parse(), ARGP_ERR_UNKNOWN,

60

ARGP_KEY_END, ARGP_KEY_ARG, error_t */

59

ARGP_KEY_END, ARGP_KEY_ARG,

60

error_t */

61

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

62

sigaddset(), sigaction(),

63

sigprocmask(), SIG_BLOCK, SIGCHLD,

65

#include <errno.h> /* errno, EBADF */

66

67

#define BUFFER_SIZE 256

68

#define ARGFILE "/conf/conf.d/mandos/plugin-runner.conf"

68

69

const char *argp_program_version = "mandos-client 1.0";

70

const char *argp_program_version = "plugin-runner 1.0";

70

71

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

71

72

73

struct process;

78

79

size_t buffer_size;

79

80

size_t buffer_length;

80

81

bool eof;

81

bool completed;

82

int status;

82

volatile bool completed;

83

volatile int status;

83

84

struct process *next;

84

85

} process;

85

86

87

88

char *name; /* can be NULL or any plugin name */

88

89

char **argv;

89

90

int argc;

91

char **environ;

92

int envc;

90

93

bool disabled;

91

94

struct plugin *next;

92

95

} plugin;

101

104

/* Create a new plugin */

102

105

plugin *new_plugin = malloc(sizeof(plugin));

103

106

if (new_plugin == NULL){

104

perror("malloc");

105

exit(EXIT_FAILURE);

106

}

107

new_plugin->name = name;

107

return NULL;

108

}

109

char *copy_name = NULL;

110

if(name != NULL){

111

copy_name = strdup(name);

112

if(copy_name == NULL){

113

return NULL;

114

}

115

}

116

117

*new_plugin = (plugin) { .name = copy_name,

118

.argc = 1,

119

.envc = 0,

120

.disabled = false,

121

.next = *plugin_list };

122

108

123

new_plugin->argv = malloc(sizeof(char *) * 2);

109

124

if (new_plugin->argv == NULL){

110

perror("malloc");

111

exit(EXIT_FAILURE);

125

free(copy_name);

126

free(new_plugin);

127

return NULL;

112

128

}

113

new_plugin->argv[0] = name;

129

new_plugin->argv[0] = copy_name;

114

130

new_plugin->argv[1] = NULL;

115

new_plugin->argc = 1;

116

new_plugin->disabled = false;

117

new_plugin->next = *plugin_list;

131

132

new_plugin->environ = malloc(sizeof(char *));

133

if(new_plugin->environ == NULL){

134

free(copy_name);

135

free(new_plugin->argv);

136

free(new_plugin);

137

return NULL;

138

}

139

new_plugin->environ[0] = NULL;

118

140

/* Append the new plugin to the list */

119

141

*plugin_list = new_plugin;

120

142

return new_plugin;

121

143

}

122

144

123

static void addargument(plugin *p, char *arg){

124

p->argv[p->argc] = arg;

125

p->argv = realloc(p->argv, sizeof(char *) * (size_t)(p->argc + 2));

126

if (p->argv == NULL){

127

perror("malloc");

128

exit(EXIT_FAILURE);

129

}

130

p->argc++;

131

p->argv[p->argc] = NULL;

132

}

145

/* Helper function for add_argument and add_environment */

146

static bool add_to_char_array(const char *new, char ***array,

147

int *len){

148

/* Resize the pointed-to array to hold one more pointer */

149

*array = realloc(*array, sizeof(char *)

150

* (size_t) ((*len) + 2));

151

/* Malloc check */

152

if(*array == NULL){

153

return false;

154

}

155

/* Make a copy of the new string */

156

char *copy = strdup(new);

157

if(copy == NULL){

158

return false;

159

}

160

/* Insert the copy */

161

(*array)[*len] = copy;

162

(*len)++;

163

/* Add a new terminating NULL pointer to the last element */

164

(*array)[*len] = NULL;

165

return true;

166

}

167

168

/* Add to a plugin's argument vector */

169

static bool add_argument(plugin *p, const char *arg){

170

if(p == NULL){

171

return false;

172

}

173

return add_to_char_array(arg, &(p->argv), &(p->argc));

174

}

175

176

/* Add to a plugin's environment */

177

static bool add_environment(plugin *p, const char *def){

178

if(p == NULL){

179

return false;

180

}

181

return add_to_char_array(def, &(p->environ), &(p->envc));

182

}

183

133

184

134

185

/*

135

186

* Based on the example in the GNU LibC manual chapter 13.13 "File

149

200

150

201

process *process_list = NULL;

151

202

152

/* Mark a process as completed when it exits, and save its exit

203

/* Mark processes as completed when they exit, and save their exit

153

204

status. */

154

205

void handle_sigchld(__attribute__((unused)) int sig){

155

process *proc = process_list;

156

int status;

157

pid_t pid = wait(&status);

158

if(pid == -1){

159

perror("wait");

160

return;

161

}

162

while(proc != NULL and proc->pid != pid){

163

proc = proc->next;

164

}

165

if(proc == NULL){

166

/* Process not found in process list */

167

return;

168

}

169

proc->status = status;

170

proc->completed = true;

206

while(true){

207

process *proc = process_list;

208

int status;

209

pid_t pid = waitpid(-1, &status, WNOHANG);

210

if(pid == 0){

211

/* Only still running child processes */

212

break;

213

}

214

if(pid == -1){

215

if (errno != ECHILD){

216

perror("waitpid");

217

}

218

/* No child processes */

219

break;

220

}

221

222

/* A child exited, find it in process_list */

223

while(proc != NULL and proc->pid != pid){

224

proc = proc->next;

225

}

226

if(proc == NULL){

227

/* Process not found in process list */

228

continue;

229

}

230

proc->status = status;

231

proc->completed = true;

232

}

171

233

}

172

234

173

235

bool print_out_password(const char *buffer, size_t length){

185

247

return true;

186

248

}

187

249

250

char **add_to_argv(char **argv, int *argc, char *arg){

251

if (argv == NULL){

252

*argc = 1;

253

argv = malloc(sizeof(char*) * 2);

254

if(argv == NULL){

255

return NULL;

256

}

257

argv[0] = NULL; /* Will be set to argv[0] in main before parsing */

258

argv[1] = NULL;

259

}

260

*argc += 1;

261

argv = realloc(argv, sizeof(char *)

262

* ((unsigned int) *argc + 1));

263

if(argv == NULL){

264

return NULL;

265

}

266

argv[*argc-1] = arg;

267

argv[*argc] = NULL;

268

return argv;

269

}

270

271

static void free_plugin_list(plugin *plugin_list){

272

for(plugin *next; plugin_list != NULL; plugin_list = next){

273

next = plugin_list->next;

274

for(char **arg = plugin_list->argv; *arg != NULL; arg++){

275

free(*arg);

276

}

277

free(plugin_list->argv);

278

for(char **env = plugin_list->environ; *env != NULL; env++){

279

free(*env);

280

}

281

free(plugin_list->environ);

282

free(plugin_list);

283

}

284

}

285

188

286

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

189

const char *plugindir = "/conf/conf.d/mandos/plugins.d";

287

const char *plugindir = "/lib/mandos/plugins.d";

288

const char *argfile = ARGFILE;

289

FILE *conffp;

190

290

size_t d_name_len;

191

291

DIR *dir = NULL;

192

292

struct dirent *dirst;

200

300

struct sigaction old_sigchld_action;

201

301

struct sigaction sigchld_action = { .sa_handler = handle_sigchld,

202

302

.sa_flags = SA_NOCLDSTOP };

203

char *plus_options = NULL;

204

char **plus_argv = NULL;

205

303

char **custom_argv = NULL;

304

int custom_argc = 0;

305

206

306

/* Establish a signal handler */

207

307

sigemptyset(&sigchld_action.sa_mask);

208

308

ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);

209

if(ret < 0){

309

if(ret == -1){

210

310

perror("sigaddset");

211

exit(EXIT_FAILURE);

311

exitstatus = EXIT_FAILURE;

312

goto fallback;

212

313

}

213

314

ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);

214

if(ret < 0){

315

if(ret == -1){

215

316

perror("sigaction");

216

exit(EXIT_FAILURE);

317

exitstatus = EXIT_FAILURE;

318

goto fallback;

217

319

}

218

320

219

321

/* The options we understand. */

221

323

{ .name = "global-options", .key = 'g',

222

324

.arg = "OPTION[,OPTION[,...]]",

223

325

.doc = "Options passed to all plugins" },

326

{ .name = "global-envs", .key = 'e',

327

.arg = "VAR=value",

328

.doc = "Environment variable passed to all plugins" },

224

329

{ .name = "options-for", .key = 'o',

225

330

.arg = "PLUGIN:OPTION[,OPTION[,...]]",

226

331

.doc = "Options passed only to specified plugin" },

332

{ .name = "envs-for", .key = 'f',

333

.arg = "PLUGIN:ENV=value",

334

.doc = "Environment variable passed to specified plugin" },

227

335

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

228

336

.arg = "PLUGIN",

229

337

.doc = "Disable a specific plugin", .group = 1 },

248

356

switch (key) {

249

357

case 'g':

250

358

if (arg != NULL){

251

char *p = strtok(arg, ",");

252

do{

253

addargument(getplugin(NULL, plugins), p);

254

p = strtok(NULL, ",");

255

} while (p != NULL);

359

char *p;

360

while((p = strsep(&arg, ",")) != NULL){

361

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

362

continue;

363

}

364

if(not add_argument(getplugin(NULL, plugins), p)){

365

perror("add_argument");

366

return ARGP_ERR_UNKNOWN;

367

}

368

}

369

}

370

break;

371

case 'e':

372

if(arg == NULL){

373

break;

374

}

375

{

376

char *envdef = strdup(arg);

377

if(envdef == NULL){

378

break;

379

}

380

if(not add_environment(getplugin(NULL, plugins), envdef)){

381

perror("add_environment");

382

}

256

383

}

257

384

break;

258

385

case 'o':

259

386

if (arg != NULL){

260

char *name = strtok(arg, ":");

261

char *p = strtok(NULL, ":");

262

if(p != NULL){

263

p = strtok(p, ",");

264

do{

265

addargument(getplugin(name, plugins), p);

266

p = strtok(NULL, ",");

267

} while (p != NULL);

387

char *p_name = strsep(&arg, ":");

388

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

389

break;

390

}

391

char *opt = strsep(&arg, ":");

392

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

393

break;

394

}

395

if(opt != NULL){

396

char *p;

397

while((p = strsep(&opt, ",")) != NULL){

398

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

399

continue;

400

}

401

if(not add_argument(getplugin(p_name, plugins), p)){

402

perror("add_argument");

403

return ARGP_ERR_UNKNOWN;

404

}

405

}

406

}

407

}

408

break;

409

case 'f':

410

if(arg == NULL){

411

break;

412

}

413

{

414

char *envdef = strchr(arg, ':');

415

if(envdef == NULL){

416

break;

417

}

418

char *p_name = strndup(arg, (size_t) (envdef-arg));

419

if(p_name == NULL){

420

break;

421

}

422

envdef++;

423

if(not add_environment(getplugin(p_name, plugins), envdef)){

424

perror("add_environment");

268

425

}

269

426

}

270

427

break;

271

428

case 'd':

272

429

if (arg != NULL){

273

getplugin(arg, plugins)->disabled = true;

430

plugin *p = getplugin(arg, plugins);

431

if(p == NULL){

432

return ARGP_ERR_UNKNOWN;

433

}

434

p->disabled = true;

274

435

}

275

436

break;

276

437

case 128:

286

447

debug = true;

287

448

break;

288

449

case ARGP_KEY_ARG:

289

if(plus_options != NULL or arg == NULL or arg[0] != '+'){

290

argp_usage (state);

291

}

292

plus_options = arg;

450

fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);

293

451

break;

294

452

case ARGP_KEY_END:

295

453

break;

309

467

if (ret == ARGP_ERR_UNKNOWN){

310

468

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

311

469

exitstatus = EXIT_FAILURE;

312

goto end;

470

goto fallback;

313

471

}

314

315

if(plus_options){

316

/* This is a mangled argument in the form of

317

"+--option+--other-option=parameter+--yet-another-option", etc */

318

/* Make new argc and argv vars, and call argp_parse() again. */

319

plus_options++; /* skip the first '+' character */

320

const char delims[] = "+";

321

char *arg;

322

int new_argc = 1;

323

plus_argv = malloc(sizeof(char*) * 2);

324

if(plus_argv == NULL){

325

perror("malloc");

472

473

conffp = fopen(argfile, "r");

474

if(conffp != NULL){

475

char *org_line = NULL;

476

char *p, *arg, *new_arg, *line;

477

size_t size = 0;

478

ssize_t sret;

479

const char whitespace_delims[] = " \r\t\f\v\n";

480

const char comment_delim[] = "#";

481

482

while(true){

483

sret = getline(&org_line, &size, conffp);

484

if(sret == -1){

485

break;

486

}

487

488

line = org_line;

489

arg = strsep(&line, comment_delim);

490

while((p = strsep(&arg, whitespace_delims)) != NULL){

491

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

492

continue;

493

}

494

new_arg = strdup(p);

495

custom_argv = add_to_argv(custom_argv, &custom_argc, new_arg);

496

if (custom_argv == NULL){

497

perror("add_to_argv");

498

exitstatus = EXIT_FAILURE;

499

goto fallback;

500

}

501

}

502

}

503

free(org_line);

504

} else{

505

/* Check for harmful errors and go to fallback. Other errors might

506

not affect opening plugins */

507

if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){

508

perror("fopen");

326

509

exitstatus = EXIT_FAILURE;

327

goto end;

328

}

329

plus_argv[0] = argv[0];

330

plus_argv[1] = NULL;

331

arg = strtok(plus_options, delims); /* Get first argument */

332

while(arg != NULL){

333

new_argc++;

334

plus_argv = realloc(plus_argv, sizeof(char *)

335

* ((unsigned int) new_argc + 1));

336

if(plus_argv == NULL){

337

perror("realloc");

338

exitstatus = EXIT_FAILURE;

339

goto end;

340

}

341

plus_argv[new_argc-1] = arg;

342

plus_argv[new_argc] = NULL;

343

arg = strtok(NULL, delims); /* Get next argument */

344

}

345

ret = argp_parse (&argp, new_argc, plus_argv, 0, 0, &plugin_list);

510

goto fallback;

511

}

512

}

513

514

if(custom_argv != NULL){

515

custom_argv[0] = argv[0];

516

ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0, &plugin_list);

346

517

if (ret == ARGP_ERR_UNKNOWN){

347

518

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

348

519

exitstatus = EXIT_FAILURE;

349

goto end;

520

goto fallback;

350

521

}

351

522

}

352

523

357

528

for(char **a = p->argv; *a != NULL; a++){

358

529

fprintf(stderr, "\tArg: %s\n", *a);

359

530

}

531

fprintf(stderr, "...and %u environment variables\n", p->envc);

532

for(char **a = p->environ; *a != NULL; a++){

533

fprintf(stderr, "\t%s\n", *a);

534

}

360

535

}

361

536

}

362

537

374

549

if(dir == NULL){

375

550

perror("Could not open plugin dir");

376

551

exitstatus = EXIT_FAILURE;

377

goto end;

552

goto fallback;

378

553

}

379

554

380

555

/* Set the FD_CLOEXEC flag on the directory, if possible */

385

560

if(ret < 0){

386

561

perror("set_cloexec_flag");

387

562

exitstatus = EXIT_FAILURE;

388

goto end;

563

goto fallback;

389

564

}

390

565

}

391

566

}

400

575

if (errno == EBADF){

401

576

perror("readdir");

402

577

exitstatus = EXIT_FAILURE;

403

goto end;

578

goto fallback;

404

579

}

405

580

break;

406

581

}

451

626

continue;

452

627

}

453

628

}

454

455

char *filename = malloc(d_name_len + strlen(plugindir) + 2);

456

if (filename == NULL){

457

perror("malloc");

458

exitstatus = EXIT_FAILURE;

459

goto end;

629

630

char *filename;

631

ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);

632

if(ret < 0){

633

perror("asprintf");

634

continue;

460

635

}

461

strcpy(filename, plugindir); /* Spurious warning */

462

strcat(filename, "/"); /* Spurious warning */

463

strcat(filename, dirst->d_name); /* Spurious warning */

464

636

465

637

ret = stat(filename, &st);

466

638

if (ret == -1){

467

639

perror("stat");

468

exitstatus = EXIT_FAILURE;

469

goto end;

640

free(filename);

641

continue;

470

642

}

471

643

472

644

if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){

477

649

free(filename);

478

650

continue;

479

651

}

480

if(getplugin(dirst->d_name, &plugin_list)->disabled){

652

plugin *p = getplugin(dirst->d_name, &plugin_list);

653

if(p == NULL){

654

perror("getplugin");

655

free(filename);

656

continue;

657

}

658

if(p->disabled){

481

659

if(debug){

482

660

fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",

483

661

dirst->d_name);

485

663

free(filename);

486

664

continue;

487

665

}

488

plugin *p = getplugin(dirst->d_name, &plugin_list);

489

666

{

490

667

/* Add global arguments to argument list for this plugin */

491

668

plugin *g = getplugin(NULL, &plugin_list);

492

for(char **a = g->argv + 1; *a != NULL; a++){

493

addargument(p, *a);

494

}

495

}

496

int pipefd[2];

669

if(g != NULL){

670

for(char **a = g->argv + 1; *a != NULL; a++){

671

if(not add_argument(p, *a)){

672

perror("add_argument");

673

}

674

}

675

/* Add global environment variables */

676

for(char **e = g->environ; *e != NULL; e++){

677

if(not add_environment(p, *e)){

678

perror("add_environment");

679

}

680

}

681

}

682

}

683

/* If this plugin has any environment variables, we will call

684

using execve and need to duplicate the environment from this

685

process, too. */

686

if(p->environ[0] != NULL){

687

for(char **e = environ; *e != NULL; e++){

688

char *copy = strdup(*e);

689

if(copy == NULL){

690

perror("strdup");

691

continue;

692

}

693

if(not add_environment(p, copy)){

694

perror("add_environment");

695

}

696

}

697

}

698

699

int pipefd[2];

497

700

ret = pipe(pipefd);

498

701

if (ret == -1){

499

702

perror("pipe");

500

703

exitstatus = EXIT_FAILURE;

501

goto end;

704

goto fallback;

502

705

}

503

706

ret = set_cloexec_flag(pipefd[0]);

504

707

if(ret < 0){

505

708

perror("set_cloexec_flag");

506

709

exitstatus = EXIT_FAILURE;

507

goto end;

710

goto fallback;

508

711

}

509

712

ret = set_cloexec_flag(pipefd[1]);

510

713

if(ret < 0){

511

714

perror("set_cloexec_flag");

512

715

exitstatus = EXIT_FAILURE;

513

goto end;

716

goto fallback;

514

717

}

515

718

/* Block SIGCHLD until process is safely in process list */

516

719

ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);

517

720

if(ret < 0){

518

721

perror("sigprocmask");

519

722

exitstatus = EXIT_FAILURE;

520

goto end;

723

goto fallback;

521

724

}

522

725

// Starting a new process to be watched

523

726

pid_t pid = fork();

727

if(pid == -1){

728

perror("fork");

729

exitstatus = EXIT_FAILURE;

730

goto fallback;

731

}

524

732

if(pid == 0){

525

733

/* this is the child process */

526

734

ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);

545

753

above and must now close it manually here. */

546

754

closedir(dir);

547

755

}

548

if(execv(filename, p->argv) < 0){

549

perror("execv");

550

_exit(EXIT_FAILURE);

756

if(p->environ[0] == NULL){

757

if(execv(filename, p->argv) < 0){

758

perror("execv");

759

_exit(EXIT_FAILURE);

760

}

761

} else {

762

if(execve(filename, p->argv, p->environ) < 0){

763

perror("execve");

764

_exit(EXIT_FAILURE);

765

}

551

766

}

552

767

/* no return */

553

768

}

562

777

perror("sigprocmask");

563

778

}

564

779

exitstatus = EXIT_FAILURE;

565

goto end;

780

goto fallback;

566

781

}

567

782

568

783

*new_process = (struct process){ .pid = pid,

576

791

if(ret < 0){

577

792

perror("sigprocmask");

578

793

exitstatus = EXIT_FAILURE;

579

goto end;

794

goto fallback;

580

795

}

581

796

582

797

FD_SET(new_process->fd, &rfds_all);

587

802

588

803

}

589

804

590

/* Free the plugin list */

591

for(plugin *next; plugin_list != NULL; plugin_list = next){

592

next = plugin_list->next;

593

free(plugin_list->argv);

594

free(plugin_list);

595

}

805

free_plugin_list(plugin_list);

806

plugin_list = NULL;

596

807

597

808

closedir(dir);

598

809

dir = NULL;

608

819

if (select_ret == -1){

609

820

perror("select");

610

821

exitstatus = EXIT_FAILURE;

611

goto end;

822

goto fallback;

612

823

}

613

824

/* OK, now either a process completed, or something can be read

614

825

from one of them */

636

847

/* Remove the plugin */

637

848

FD_CLR(proc->fd, &rfds_all);

638

849

/* Block signal while modifying process_list */

639

ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);

850

ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);

640

851

if(ret < 0){

641

852

perror("sigprocmask");

642

853

exitstatus = EXIT_FAILURE;

643

goto end;

854

goto fallback;

644

855

}

645

856

/* Delete this process entry from the list */

646

857

if(process_list == proc){

670

881

}

671

882

/* This process exited nicely, so print its buffer */

672

883

673

bool bret = print_out_password(proc->buffer, proc->buffer_length);

884

bool bret = print_out_password(proc->buffer,

885

proc->buffer_length);

674

886

if(not bret){

675

887

perror("print_out_password");

676

888

exitstatus = EXIT_FAILURE;

677

889

}

678

goto end;

890

goto fallback;

679

891

}

680

892

/* This process has not completed. Does it have any output? */

681

893

if(proc->eof or not FD_ISSET(proc->fd, &rfds)){

689

901

if (proc->buffer == NULL){

690

902

perror("malloc");

691

903

exitstatus = EXIT_FAILURE;

692

goto end;

904

goto fallback;

693

905

}

694

906

proc->buffer_size += BUFFER_SIZE;

695

907

}

710

922

}

711

923

712

924

713

end:

925

fallback:

714

926

715

927

if(process_list == NULL or exitstatus != EXIT_SUCCESS){

716

/* Fallback if all plugins failed or an error occured */

928

/* Fallback if all plugins failed, none are found or an error

929

occured */

717

930

bool bret;

718

931

fprintf(stderr, "Going to fallback mode using getpass(3)\n");

719

932

char *passwordbuffer = getpass("Password: ");

721

934

if(not bret){

722

935

perror("print_out_password");

723

936

exitstatus = EXIT_FAILURE;

724

goto end;

725

937

}

726

938

}

727

939

728

940

/* Restore old signal handler */

729

sigaction(SIGCHLD, &old_sigchld_action, NULL);

730

731

free(plus_argv);

732

733

/* Free the plugin list */

734

for(plugin *next; plugin_list != NULL; plugin_list = next){

735

next = plugin_list->next;

736

free(plugin_list->argv);

737

free(plugin_list);

738

}

941

ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);

942

if(ret == -1){

943

perror("sigaction");

944

exitstatus = EXIT_FAILURE;

945

}

946

947

if(custom_argv != NULL){

948

for(char **arg = custom_argv; *arg != NULL; arg++){

949

free(*arg);

950

}

951

free(custom_argv);

952

}

953

free_plugin_list(plugin_list);

739

954

740

955

if(dir != NULL){

741

956

closedir(dir);