/mandos/release : revision 24.1.67

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

static void free_plugin_list(plugin *plugin_list){

251

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

252

next = plugin_list->next;

253

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

254

free(*arg);

255

}

256

free(plugin_list->argv);

257

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

258

free(*env);

259

}

260

free(plugin_list->environ);

261

free(plugin_list);

262

}

263

}

264

188

265

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

189

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

266

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

267

const char *argfile = ARGFILE;

268

FILE *conffp;

190

269

size_t d_name_len;

191

270

DIR *dir = NULL;

192

271

struct dirent *dirst;

200

279

struct sigaction old_sigchld_action;

201

280

struct sigaction sigchld_action = { .sa_handler = handle_sigchld,

202

281

.sa_flags = SA_NOCLDSTOP };

203

char *plus_options = NULL;

204

char **plus_argv = NULL;

282

char **custom_argv = NULL;

283

int custom_argc = 0;

205

284

206

285

/* Establish a signal handler */

207

286

sigemptyset(&sigchld_action.sa_mask);

208

287

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

209

if(ret < 0){

288

if(ret == -1){

210

289

perror("sigaddset");

211

exit(EXIT_FAILURE);

290

exitstatus = EXIT_FAILURE;

291

goto fallback;

212

292

}

213

293

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

214

if(ret < 0){

294

if(ret == -1){

215

295

perror("sigaction");

216

exit(EXIT_FAILURE);

296

exitstatus = EXIT_FAILURE;

297

goto fallback;

217

298

}

218

299

219

300

/* The options we understand. */

221

302

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

222

303

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

223

304

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

305

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

306

.arg = "VAR=value",

307

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

224

308

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

225

309

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

226

310

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

311

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

312

.arg = "PLUGIN:ENV=value",

313

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

227

314

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

228

315

.arg = "PLUGIN",

229

316

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

248

335

switch (key) {

249

336

case 'g':

250

337

if (arg != NULL){

251

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

252

do{

253

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

254

p = strtok(NULL, ",");

255

} while (p != NULL);

338

char *p;

339

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

340

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

341

continue;

342

}

343

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

344

perror("add_argument");

345

return ARGP_ERR_UNKNOWN;

346

}

347

}

348

}

349

break;

350

case 'e':

351

if(arg == NULL){

352

break;

353

}

354

{

355

char *envdef = strdup(arg);

356

if(envdef == NULL){

357

break;

358

}

359

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

360

perror("add_environment");

361

}

256

362

}

257

363

break;

258

364

case 'o':

259

365

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);

366

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

367

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

368

break;

369

}

370

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

371

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

372

break;

373

}

374

if(opt != NULL){

375

char *p;

376

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

377

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

378

continue;

379

}

380

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

381

perror("add_argument");

382

return ARGP_ERR_UNKNOWN;

383

}

384

}

385

}

386

}

387

break;

388

case 'f':

389

if(arg == NULL){

390

break;

391

}

392

{

393

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

394

if(envdef == NULL){

395

break;

396

}

397

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

398

if(p_name == NULL){

399

break;

400

}

401

envdef++;

402

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

403

perror("add_environment");

268

404

}

269

405

}

270

406

break;

271

407

case 'd':

272

408

if (arg != NULL){

273

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

409

plugin *p = getplugin(arg, plugins);

410

if(p == NULL){

411

return ARGP_ERR_UNKNOWN;

412

}

413

p->disabled = true;

274

414

}

275

415

break;

276

416

case 128:

286

426

debug = true;

287

427

break;

288

428

case ARGP_KEY_ARG:

289

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

290

argp_usage (state);

291

}

292

plus_options = arg;

429

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

293

430

break;

294

431

case ARGP_KEY_END:

295

432

break;

309

446

if (ret == ARGP_ERR_UNKNOWN){

310

447

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

311

448

exitstatus = EXIT_FAILURE;

312

goto end;

449

goto fallback;

313

450

}

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){

451

452

conffp = fopen(argfile, "r");

453

if(conffp != NULL){

454

char *org_line = NULL;

455

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

456

size_t size = 0;

457

ssize_t sret;

458

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

459

const char comment_delim[] = "#";

460

461

custom_argc = 1;

462

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

463

if(custom_argv == NULL){

325

464

perror("malloc");

326

465

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);

466

goto fallback;

467

}

468

custom_argv[0] = argv[0];

469

custom_argv[1] = NULL;

470

471

while(true){

472

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

473

if(sret == -1){

474

break;

475

}

476

477

line = org_line;

478

arg = strsep(&line, comment_delim);

479

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

480

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

481

continue;

482

}

483

new_arg = strdup(p);

484

485

custom_argc += 1;

486

custom_argv = realloc(custom_argv, sizeof(char *)

487

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

488

if(custom_argv == NULL){

489

perror("realloc");

490

exitstatus = EXIT_FAILURE;

491

free(org_line);

492

goto fallback;

493

}

494

custom_argv[custom_argc-1] = new_arg;

495

custom_argv[custom_argc] = NULL;

496

}

497

}

498

free(org_line);

499

} else{

500

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

501

not affect opening plugins */

502

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

503

perror("fopen");

504

exitstatus = EXIT_FAILURE;

505

goto fallback;

506

}

507

}

508

509

if(custom_argv != NULL){

510

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

346

511

if (ret == ARGP_ERR_UNKNOWN){

347

512

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

348

513

exitstatus = EXIT_FAILURE;

349

goto end;

514

goto fallback;

350

515

}

351

516

}

352

517

357

522

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

358

523

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

359

524

}

525

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

526

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

527

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

528

}

360

529

}

361

530

}

362

531

374

543

if(dir == NULL){

375

544

perror("Could not open plugin dir");

376

545

exitstatus = EXIT_FAILURE;

377

goto end;

546

goto fallback;

378

547

}

379

548

380

549

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

385

554

if(ret < 0){

386

555

perror("set_cloexec_flag");

387

556

exitstatus = EXIT_FAILURE;

388

goto end;

557

goto fallback;

389

558

}

390

559

}

391

560

}

400

569

if (errno == EBADF){

401

570

perror("readdir");

402

571

exitstatus = EXIT_FAILURE;

403

goto end;

572

goto fallback;

404

573

}

405

574

break;

406

575

}

451

620

continue;

452

621

}

453

622

}

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;

623

624

char *filename;

625

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

626

if(ret < 0){

627

perror("asprintf");

628

continue;

460

629

}

461

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

462

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

463

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

464

630

465

631

ret = stat(filename, &st);

466

632

if (ret == -1){

467

633

perror("stat");

468

exitstatus = EXIT_FAILURE;

469

goto end;

634

free(filename);

635

continue;

470

636

}

471

637

472

638

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

477

643

free(filename);

478

644

continue;

479

645

}

480

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

646

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

647

if(p == NULL){

648

perror("getplugin");

649

free(filename);

650

continue;

651

}

652

if(p->disabled){

481

653

if(debug){

482

654

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

483

655

dirst->d_name);

485

657

free(filename);

486

658

continue;

487

659

}

488

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

489

660

{

490

661

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

491

662

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];

663

if(g != NULL){

664

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

665

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

666

perror("add_argument");

667

}

668

}

669

/* Add global environment variables */

670

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

671

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

672

perror("add_environment");

673

}

674

}

675

}

676

}

677

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

678

using execve and need to duplicate the environment from this

679

process, too. */

680

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

681

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

682

char *copy = strdup(*e);

683

if(copy == NULL){

684

perror("strdup");

685

continue;

686

}

687

if(not add_environment(p, copy)){

688

perror("add_environment");

689

}

690

}

691

}

692

693

int pipefd[2];

497

694

ret = pipe(pipefd);

498

695

if (ret == -1){

499

696

perror("pipe");

500

697

exitstatus = EXIT_FAILURE;

501

goto end;

698

goto fallback;

502

699

}

503

700

ret = set_cloexec_flag(pipefd[0]);

504

701

if(ret < 0){

505

702

perror("set_cloexec_flag");

506

703

exitstatus = EXIT_FAILURE;

507

goto end;

704

goto fallback;

508

705

}

509

706

ret = set_cloexec_flag(pipefd[1]);

510

707

if(ret < 0){

511

708

perror("set_cloexec_flag");

512

709

exitstatus = EXIT_FAILURE;

513

goto end;

710

goto fallback;

514

711

}

515

712

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

516

713

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

517

714

if(ret < 0){

518

715

perror("sigprocmask");

519

716

exitstatus = EXIT_FAILURE;

520

goto end;

717

goto fallback;

521

718

}

522

719

// Starting a new process to be watched

523

720

pid_t pid = fork();

721

if(pid == -1){

722

perror("fork");

723

exitstatus = EXIT_FAILURE;

724

goto fallback;

725

}

524

726

if(pid == 0){

525

727

/* this is the child process */

526

728

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

545

747

above and must now close it manually here. */

546

748

closedir(dir);

547

749

}

548

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

549

perror("execv");

550

_exit(EXIT_FAILURE);

750

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

751

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

752

perror("execv");

753

_exit(EXIT_FAILURE);

754

}

755

} else {

756

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

757

perror("execve");

758

_exit(EXIT_FAILURE);

759

}

551

760

}

552

761

/* no return */

553

762

}

562

771

perror("sigprocmask");

563

772

}

564

773

exitstatus = EXIT_FAILURE;

565

goto end;

774

goto fallback;

566

775

}

567

776

568

777

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

576

785

if(ret < 0){

577

786

perror("sigprocmask");

578

787

exitstatus = EXIT_FAILURE;

579

goto end;

788

goto fallback;

580

789

}

581

790

582

791

FD_SET(new_process->fd, &rfds_all);

587

796

588

797

}

589

798

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

}

799

free_plugin_list(plugin_list);

800

plugin_list = NULL;

596

801

597

802

closedir(dir);

598

803

dir = NULL;

608

813

if (select_ret == -1){

609

814

perror("select");

610

815

exitstatus = EXIT_FAILURE;

611

goto end;

816

goto fallback;

612

817

}

613

818

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

614

819

from one of them */

636

841

/* Remove the plugin */

637

842

FD_CLR(proc->fd, &rfds_all);

638

843

/* Block signal while modifying process_list */

639

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

844

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

640

845

if(ret < 0){

641

846

perror("sigprocmask");

642

847

exitstatus = EXIT_FAILURE;

643

goto end;

848

goto fallback;

644

849

}

645

850

/* Delete this process entry from the list */

646

851

if(process_list == proc){

670

875

}

671

876

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

672

877

673

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

878

bool bret = print_out_password(proc->buffer,

879

proc->buffer_length);

674

880

if(not bret){

675

881

perror("print_out_password");

676

882

exitstatus = EXIT_FAILURE;

677

883

}

678

goto end;

884

goto fallback;

679

885

}

680

886

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

681

887

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

689

895

if (proc->buffer == NULL){

690

896

perror("malloc");

691

897

exitstatus = EXIT_FAILURE;

692

goto end;

898

goto fallback;

693

899

}

694

900

proc->buffer_size += BUFFER_SIZE;

695

901

}

708

914

}

709

915

}

710

916

}

917

918

919

fallback:

711

920

712

if(process_list == NULL){

921

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

922

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

923

occured */

713

924

bool bret;

714

925

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

715

926

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

717

928

if(not bret){

718

929

perror("print_out_password");

719

930

exitstatus = EXIT_FAILURE;

720

goto end;

721

931

}

722

932

}

723

724

end:

725

933

726

934

/* Restore old signal handler */

727

sigaction(SIGCHLD, &old_sigchld_action, NULL);

728

729

free(plus_argv);

730

731

/* Free the plugin list */

732

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

733

next = plugin_list->next;

734

free(plugin_list->argv);

735

free(plugin_list);

736

}

935

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

936

if(ret == -1){

937

perror("sigaction");

938

exitstatus = EXIT_FAILURE;

939

}

940

941

if(custom_argv != NULL){

942

for(char **arg = custom_argv+1; *arg != NULL; arg++){

943

free(*arg);

944

}

945

free(custom_argv);

946

}

947

free_plugin_list(plugin_list);

737

948

738

949

if(dir != NULL){

739

950

closedir(dir);