/mandos/trunk : revision 103

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> /* strsep, 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

258

parsing */

259

argv[1] = NULL;

260

}

261

*argc += 1;

262

argv = realloc(argv, sizeof(char *)

263

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

264

if(argv == NULL){

265

return NULL;

266

}

267

argv[*argc-1] = arg;

268

argv[*argc] = NULL;

269

return argv;

270

}

271

272

static void free_plugin_list(plugin *plugin_list){

273

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

274

next = plugin_list->next;

275

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

276

free(*arg);

277

}

278

free(plugin_list->argv);

279

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

280

free(*env);

281

}

282

free(plugin_list->environ);

283

free(plugin_list);

284

}

285

}

286

188

287

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

189

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

288

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

289

const char *argfile = ARGFILE;

290

FILE *conffp;

190

291

size_t d_name_len;

191

292

DIR *dir = NULL;

192

293

struct dirent *dirst;

200

301

struct sigaction old_sigchld_action;

201

302

struct sigaction sigchld_action = { .sa_handler = handle_sigchld,

202

303

.sa_flags = SA_NOCLDSTOP };

203

char *plus_options = NULL;

204

char **plus_argv = NULL;

205

304

char **custom_argv = NULL;

305

int custom_argc = 0;

306

206

307

/* Establish a signal handler */

207

308

sigemptyset(&sigchld_action.sa_mask);

208

309

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

209

if(ret < 0){

310

if(ret == -1){

210

311

perror("sigaddset");

211

exit(EXIT_FAILURE);

312

exitstatus = EXIT_FAILURE;

313

goto fallback;

212

314

}

213

315

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

214

if(ret < 0){

316

if(ret == -1){

215

317

perror("sigaction");

216

exit(EXIT_FAILURE);

318

exitstatus = EXIT_FAILURE;

319

goto fallback;

217

320

}

218

321

219

322

/* The options we understand. */

221

324

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

222

325

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

223

326

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

327

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

328

.arg = "VAR=value",

329

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

224

330

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

225

331

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

226

332

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

333

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

334

.arg = "PLUGIN:ENV=value",

335

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

227

336

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

228

337

.arg = "PLUGIN",

229

338

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

250

359

if (arg != NULL){

251

360

char *p;

252

361

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

253

if(strcmp(p, "") == 0){

362

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

254

363

continue;

255

364

}

256

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

365

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

366

perror("add_argument");

367

return ARGP_ERR_UNKNOWN;

368

}

369

}

370

}

371

break;

372

case 'e':

373

if(arg == NULL){

374

break;

375

}

376

{

377

char *envdef = strdup(arg);

378

if(envdef == NULL){

379

break;

380

}

381

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

382

perror("add_environment");

257

383

}

258

384

}

259

385

break;

260

386

case 'o':

261

387

if (arg != NULL){

262

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

263

if(strcmp(name, "") == 0){

388

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

389

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

264

390

break;

265

391

}

266

392

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

267

if(strcmp(opt, "") == 0){

393

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

268

394

break;

269

395

}

270

396

if(opt != NULL){

271

397

char *p;

272

398

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

273

if(strcmp(p, "") == 0){

399

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

274

400

continue;

275

401

}

276

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

402

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

403

perror("add_argument");

404

return ARGP_ERR_UNKNOWN;

405

}

277

406

}

278

407

}

279

408

}

280

409

break;

410

case 'f':

411

if(arg == NULL){

412

break;

413

}

414

{

415

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

416

if(envdef == NULL){

417

break;

418

}

419

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

420

if(p_name == NULL){

421

break;

422

}

423

envdef++;

424

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

425

perror("add_environment");

426

}

427

}

428

break;

281

429

case 'd':

282

430

if (arg != NULL){

283

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

431

plugin *p = getplugin(arg, plugins);

432

if(p == NULL){

433

return ARGP_ERR_UNKNOWN;

434

}

435

p->disabled = true;

284

436

}

285

437

break;

286

438

case 128:

296

448

debug = true;

297

449

break;

298

450

case ARGP_KEY_ARG:

299

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

300

argp_usage (state);

301

}

302

plus_options = arg;

451

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

303

452

break;

304

453

case ARGP_KEY_END:

305

454

break;

319

468

if (ret == ARGP_ERR_UNKNOWN){

320

469

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

321

470

exitstatus = EXIT_FAILURE;

322

goto end;

471

goto fallback;

323

472

}

324

325

if(plus_options){

326

/* This is a mangled argument in the form of

327

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

328

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

329

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

330

const char delims[] = "+";

331

char *arg;

332

int new_argc = 1;

333

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

334

if(plus_argv == NULL){

335

perror("malloc");

473

474

conffp = fopen(argfile, "r");

475

if(conffp != NULL){

476

char *org_line = NULL;

477

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

478

size_t size = 0;

479

ssize_t sret;

480

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

481

const char comment_delim[] = "#";

482

483

while(true){

484

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

485

if(sret == -1){

486

break;

487

}

488

489

line = org_line;

490

arg = strsep(&line, comment_delim);

491

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

492

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

493

continue;

494

}

495

new_arg = strdup(p);

496

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

497

if (custom_argv == NULL){

498

perror("add_to_argv");

499

exitstatus = EXIT_FAILURE;

500

goto fallback;

501

}

502

}

503

}

504

free(org_line);

505

} else{

506

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

507

not affect opening plugins */

508

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

509

perror("fopen");

336

510

exitstatus = EXIT_FAILURE;

337

goto end;

338

}

339

plus_argv[0] = argv[0];

340

plus_argv[1] = NULL;

341

342

while((arg = strsep(&plus_options, delims)) != NULL){

343

new_argc++;

344

plus_argv = realloc(plus_argv, sizeof(char *)

345

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

346

if(plus_argv == NULL){

347

perror("realloc");

348

exitstatus = EXIT_FAILURE;

349

goto end;

350

}

351

plus_argv[new_argc-1] = arg;

352

plus_argv[new_argc] = NULL;

353

}

354

355

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

511

goto fallback;

512

}

513

}

514

515

if(custom_argv != NULL){

516

custom_argv[0] = argv[0];

517

ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0,

518

&plugin_list);

356

519

if (ret == ARGP_ERR_UNKNOWN){

357

520

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

358

521

exitstatus = EXIT_FAILURE;

359

goto end;

522

goto fallback;

360

523

}

361

524

}

362

525

367

530

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

368

531

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

369

532

}

533

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

534

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

535

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

536

}

370

537

}

371

538

}

372

539

384

551

if(dir == NULL){

385

552

perror("Could not open plugin dir");

386

553

exitstatus = EXIT_FAILURE;

387

goto end;

554

goto fallback;

388

555

}

389

556

390

557

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

395

562

if(ret < 0){

396

563

perror("set_cloexec_flag");

397

564

exitstatus = EXIT_FAILURE;

398

goto end;

565

goto fallback;

399

566

}

400

567

}

401

568

}

410

577

if (errno == EBADF){

411

578

perror("readdir");

412

579

exitstatus = EXIT_FAILURE;

413

goto end;

580

goto fallback;

414

581

}

415

582

break;

416

583

}

461

628

continue;

462

629

}

463

630

}

464

465

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

466

if (filename == NULL){

467

perror("malloc");

631

632

char *filename;

633

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

634

if(ret < 0){

635

perror("asprintf");

468

636

continue;

469

637

}

470

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

471

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

472

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

473

638

474

639

ret = stat(filename, &st);

475

640

if (ret == -1){

486

651

free(filename);

487

652

continue;

488

653

}

489

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

654

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

655

if(p == NULL){

656

perror("getplugin");

657

free(filename);

658

continue;

659

}

660

if(p->disabled){

490

661

if(debug){

491

662

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

492

663

dirst->d_name);

494

665

free(filename);

495

666

continue;

496

667

}

497

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

498

668

{

499

669

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

500

670

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

501

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

502

addargument(p, *a);

503

}

504

}

505

int pipefd[2];

671

if(g != NULL){

672

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

673

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

674

perror("add_argument");

675

}

676

}

677

/* Add global environment variables */

678

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

679

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

680

perror("add_environment");

681

}

682

}

683

}

684

}

685

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

686

using execve and need to duplicate the environment from this

687

process, too. */

688

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

689

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

690

char *copy = strdup(*e);

691

if(copy == NULL){

692

perror("strdup");

693

continue;

694

}

695

if(not add_environment(p, copy)){

696

perror("add_environment");

697

}

698

}

699

}

700

701

int pipefd[2];

506

702

ret = pipe(pipefd);

507

703

if (ret == -1){

508

704

perror("pipe");

509

705

exitstatus = EXIT_FAILURE;

510

goto end;

706

goto fallback;

511

707

}

512

708

ret = set_cloexec_flag(pipefd[0]);

513

709

if(ret < 0){

514

710

perror("set_cloexec_flag");

515

711

exitstatus = EXIT_FAILURE;

516

goto end;

712

goto fallback;

517

713

}

518

714

ret = set_cloexec_flag(pipefd[1]);

519

715

if(ret < 0){

520

716

perror("set_cloexec_flag");

521

717

exitstatus = EXIT_FAILURE;

522

goto end;

718

goto fallback;

523

719

}

524

720

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

525

721

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

526

722

if(ret < 0){

527

723

perror("sigprocmask");

528

724

exitstatus = EXIT_FAILURE;

529

goto end;

725

goto fallback;

530

726

}

531

727

// Starting a new process to be watched

532

728

pid_t pid = fork();

533

729

if(pid == -1){

534

730

perror("fork");

535

731

exitstatus = EXIT_FAILURE;

536

goto end;

732

goto fallback;

537

733

}

538

734

if(pid == 0){

539

735

/* this is the child process */

559

755

above and must now close it manually here. */

560

756

closedir(dir);

561

757

}

562

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

563

perror("execv");

564

_exit(EXIT_FAILURE);

758

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

759

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

760

perror("execv");

761

_exit(EXIT_FAILURE);

762

}

763

} else {

764

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

765

perror("execve");

766

_exit(EXIT_FAILURE);

767

}

565

768

}

566

769

/* no return */

567

770

}

576

779

perror("sigprocmask");

577

780

}

578

781

exitstatus = EXIT_FAILURE;

579

goto end;

782

goto fallback;

580

783

}

581

784

582

785

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

590

793

if(ret < 0){

591

794

perror("sigprocmask");

592

795

exitstatus = EXIT_FAILURE;

593

goto end;

796

goto fallback;

594

797

}

595

798

596

799

FD_SET(new_process->fd, &rfds_all);

601

804

602

805

}

603

806

604

/* Free the plugin list */

605

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

606

next = plugin_list->next;

607

free(plugin_list->argv);

608

free(plugin_list);

609

}

807

free_plugin_list(plugin_list);

808

plugin_list = NULL;

610

809

611

810

closedir(dir);

612

811

dir = NULL;

622

821

if (select_ret == -1){

623

822

perror("select");

624

823

exitstatus = EXIT_FAILURE;

625

goto end;

824

goto fallback;

626

825

}

627

826

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

628

827

from one of them */

650

849

/* Remove the plugin */

651

850

FD_CLR(proc->fd, &rfds_all);

652

851

/* Block signal while modifying process_list */

653

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

852

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

654

853

if(ret < 0){

655

854

perror("sigprocmask");

656

855

exitstatus = EXIT_FAILURE;

657

goto end;

856

goto fallback;

658

857

}

659

858

/* Delete this process entry from the list */

660

859

if(process_list == proc){

684

883

}

685

884

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

686

885

687

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

886

bool bret = print_out_password(proc->buffer,

887

proc->buffer_length);

688

888

if(not bret){

689

889

perror("print_out_password");

690

890

exitstatus = EXIT_FAILURE;

691

891

}

692

goto end;

892

goto fallback;

693

893

}

694

894

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

695

895

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

703

903

if (proc->buffer == NULL){

704

904

perror("malloc");

705

905

exitstatus = EXIT_FAILURE;

706

goto end;

906

goto fallback;

707

907

}

708

908

proc->buffer_size += BUFFER_SIZE;

709

909

}

724

924

}

725

925

726

926

727

end:

927

fallback:

728

928

729

929

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

730

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

930

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

931

occured */

731

932

bool bret;

732

933

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

733

934

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

735

936

if(not bret){

736

937

perror("print_out_password");

737

938

exitstatus = EXIT_FAILURE;

738

goto end;

739

939

}

740

940

}

741

941

742

942

/* Restore old signal handler */

743

sigaction(SIGCHLD, &old_sigchld_action, NULL);

744

745

free(plus_argv);

746

747

/* Free the plugin list */

748

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

749

next = plugin_list->next;

750

free(plugin_list->argv);

751

free(plugin_list);

752

}

943

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

944

if(ret == -1){

945

perror("sigaction");

946

exitstatus = EXIT_FAILURE;

947

}

948

949

if(custom_argv != NULL){

950

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

951

free(*arg);

952

}

953

free(custom_argv);

954

}

955

free_plugin_list(plugin_list);

753

956

754

957

if(dir != NULL){

755

958

closedir(dir);