/mandos/release : revision 117

21

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

22

*/

23

24

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

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

#define PDIR "/lib/mandos/plugins.d"

70

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

69

71

70

72

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

71

73

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

79

81

size_t buffer_size;

80

82

size_t buffer_length;

81

83

bool eof;

82

bool completed;

83

int status;

84

volatile bool completed;

85

volatile int status;

84

86

struct process *next;

85

87

} process;

86

88

90

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

89

91

char **argv;

90

92

int argc;

93

char **environ;

94

int envc;

91

95

bool disabled;

92

96

struct plugin *next;

93

97

} plugin;

102

106

/* Create a new plugin */

103

107

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

104

108

if (new_plugin == NULL){

105

perror("malloc");

106

exit(EXIT_FAILURE);

107

}

108

new_plugin->name = name;

109

return NULL;

110

}

111

char *copy_name = NULL;

112

if(name != NULL){

113

copy_name = strdup(name);

114

if(copy_name == NULL){

115

return NULL;

116

}

117

}

118

119

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

120

.argc = 1,

121

.envc = 0,

122

.disabled = false,

123

.next = *plugin_list };

124

109

125

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

110

126

if (new_plugin->argv == NULL){

111

perror("malloc");

112

exit(EXIT_FAILURE);

127

free(copy_name);

128

free(new_plugin);

129

return NULL;

113

130

}

114

new_plugin->argv[0] = name;

131

new_plugin->argv[0] = copy_name;

115

132

new_plugin->argv[1] = NULL;

116

new_plugin->argc = 1;

117

new_plugin->disabled = false;

118

new_plugin->next = *plugin_list;

133

134

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

135

if(new_plugin->environ == NULL){

136

free(copy_name);

137

free(new_plugin->argv);

138

free(new_plugin);

139

return NULL;

140

}

141

new_plugin->environ[0] = NULL;

119

142

/* Append the new plugin to the list */

120

143

*plugin_list = new_plugin;

121

144

return new_plugin;

122

145

}

123

146

124

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

125

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

126

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

127

if (p->argv == NULL){

128

perror("malloc");

129

exit(EXIT_FAILURE);

130

}

131

p->argc++;

132

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

133

}

147

/* Helper function for add_argument and add_environment */

148

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

149

int *len){

150

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

151

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

152

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

153

/* Malloc check */

154

if(*array == NULL){

155

return false;

156

}

157

/* Make a copy of the new string */

158

char *copy = strdup(new);

159

if(copy == NULL){

160

return false;

161

}

162

/* Insert the copy */

163

(*array)[*len] = copy;

164

(*len)++;

165

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

166

(*array)[*len] = NULL;

167

return true;

168

}

169

170

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

171

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

172

if(p == NULL){

173

return false;

174

}

175

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

176

}

177

178

/* Add to a plugin's environment */

179

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

180

if(p == NULL){

181

return false;

182

}

183

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

184

}

185

134

186

135

187

/*

136

188

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

150

202

151

203

process *process_list = NULL;

152

204

153

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

205

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

154

206

status. */

155

207

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

156

process *proc = process_list;

157

int status;

158

pid_t pid = wait(&status);

159

if(pid == -1){

160

perror("wait");

161

return;

162

}

163

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

164

proc = proc->next;

165

}

166

if(proc == NULL){

167

/* Process not found in process list */

168

return;

169

}

170

proc->status = status;

171

proc->completed = true;

208

while(true){

209

process *proc = process_list;

210

int status;

211

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

212

if(pid == 0){

213

/* Only still running child processes */

214

break;

215

}

216

if(pid == -1){

217

if (errno != ECHILD){

218

perror("waitpid");

219

}

220

/* No child processes */

221

break;

222

}

223

224

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

225

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

226

proc = proc->next;

227

}

228

if(proc == NULL){

229

/* Process not found in process list */

230

continue;

231

}

232

proc->status = status;

233

proc->completed = true;

234

}

172

235

}

173

236

174

237

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

186

249

return true;

187

250

}

188

251

189

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

190

191

if (argv == NULL){

192

*argc = 1;

193

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

194

if(argv == NULL){

195

return NULL;

196

}

197

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

198

argv[1] = NULL;

199

}

200

*argc += 1;

201

argv = realloc(argv, sizeof(char *)

202

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

203

if(argv == NULL){

204

return NULL;

205

}

206

argv[*argc-1] = arg;

207

argv[*argc] = NULL;

208

return argv;

252

static void free_plugin_list(plugin *plugin_list){

253

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

254

next = plugin_list->next;

255

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

256

free(*arg);

257

}

258

free(plugin_list->argv);

259

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

260

free(*env);

261

}

262

free(plugin_list->environ);

263

free(plugin_list);

264

}

209

265

}

210

266

211

267

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

212

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

213

const char *argfile = ARGFILE;

268

char *plugindir = NULL;

269

char *argfile = NULL;

214

270

FILE *conffp;

215

271

size_t d_name_len;

216

272

DIR *dir = NULL;

231

287

/* Establish a signal handler */

232

288

sigemptyset(&sigchld_action.sa_mask);

233

289

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

234

if(ret < 0){

290

if(ret == -1){

235

291

perror("sigaddset");

236

exit(EXIT_FAILURE);

292

exitstatus = EXIT_FAILURE;

293

goto fallback;

237

294

}

238

295

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

239

if(ret < 0){

296

if(ret == -1){

240

297

perror("sigaction");

241

exit(EXIT_FAILURE);

298

exitstatus = EXIT_FAILURE;

299

goto fallback;

242

300

}

243

301

244

302

/* The options we understand. */

246

304

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

247

305

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

248

306

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

307

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

308

.arg = "VAR=value",

309

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

249

310

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

250

311

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

251

312

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

313

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

314

.arg = "PLUGIN:ENV=value",

315

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

252

316

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

253

317

.arg = "PLUGIN",

254

318

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

255

319

{ .name = "plugin-dir", .key = 128,

256

320

.arg = "DIRECTORY",

257

321

.doc = "Specify a different plugin directory", .group = 2 },

258

{ .name = "userid", .key = 129,

259

.arg = "ID", .flags = 0,

260

.doc = "User ID the plugins will run as", .group = 2 },

261

{ .name = "groupid", .key = 130,

262

.arg = "ID", .flags = 0,

263

.doc = "Group ID the plugins will run as", .group = 2 },

264

{ .name = "debug", .key = 131,

265

.doc = "Debug mode", .group = 3 },

322

{ .name = "config-file", .key = 129,

323

.arg = "FILE",

324

.doc = "Specify a different configuration file", .group = 2 },

325

{ .name = "userid", .key = 130,

326

.arg = "ID", .flags = 0,

327

.doc = "User ID the plugins will run as", .group = 3 },

328

{ .name = "groupid", .key = 131,

329

.arg = "ID", .flags = 0,

330

.doc = "Group ID the plugins will run as", .group = 3 },

331

{ .name = "debug", .key = 132,

332

.doc = "Debug mode", .group = 4 },

266

333

{ .name = NULL }

267

334

};

268

335

278

345

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

279

346

continue;

280

347

}

281

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

348

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

349

perror("add_argument");

350

return ARGP_ERR_UNKNOWN;

351

}

352

}

353

}

354

break;

355

case 'e':

356

if(arg == NULL){

357

break;

358

}

359

{

360

char *envdef = strdup(arg);

361

if(envdef == NULL){

362

break;

363

}

364

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

365

perror("add_environment");

282

366

}

283

367

}

284

368

break;

285

369

case 'o':

286

370

if (arg != NULL){

287

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

288

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

371

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

372

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

289

373

break;

290

374

}

291

375

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

298

382

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

299

383

continue;

300

384

}

301

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

385

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

386

perror("add_argument");

387

return ARGP_ERR_UNKNOWN;

388

}

302

389

}

303

390

}

304

391

}

305

392

break;

393

case 'f':

394

if(arg == NULL){

395

break;

396

}

397

{

398

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

399

if(envdef == NULL){

400

break;

401

}

402

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

403

if(p_name == NULL){

404

break;

405

}

406

envdef++;

407

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

408

perror("add_environment");

409

}

410

}

411

break;

306

412

case 'd':

307

413

if (arg != NULL){

308

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

414

plugin *p = getplugin(arg, plugins);

415

if(p == NULL){

416

return ARGP_ERR_UNKNOWN;

417

}

418

p->disabled = true;

309

419

}

310

420

break;

311

421

case 128:

312

plugindir = arg;

422

plugindir = strdup(arg);

423

if(plugindir == NULL){

424

perror("strdup");

425

}

313

426

break;

314

427

case 129:

428

argfile = strdup(arg);

429

if(argfile == NULL){

430

perror("strdup");

431

}

432

break;

433

case 130:

315

434

uid = (uid_t)strtol(arg, NULL, 10);

316

435

break;

317

case 130:

436

case 131:

318

437

gid = (gid_t)strtol(arg, NULL, 10);

319

438

break;

320

case 131:

439

case 132:

321

440

debug = true;

322

441

break;

323

442

case ARGP_KEY_ARG:

324

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

443

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

325

444

break;

326

445

case ARGP_KEY_END:

327

446

break;

341

460

if (ret == ARGP_ERR_UNKNOWN){

342

461

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

343

462

exitstatus = EXIT_FAILURE;

344

goto end;

463

goto fallback;

345

464

}

346

465

347

conffp = fopen(argfile, "r");

466

if (argfile == NULL){

467

conffp = fopen(AFILE, "r");

468

} else {

469

conffp = fopen(argfile, "r");

470

}

471

348

472

if(conffp != NULL){

349

473

char *org_line = NULL;

474

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

350

475

size_t size = 0;

351

476

ssize_t sret;

352

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

353

477

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

354

478

const char comment_delim[] = "#";

355

479

480

custom_argc = 1;

481

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

482

if(custom_argv == NULL){

483

perror("malloc");

484

exitstatus = EXIT_FAILURE;

485

goto fallback;

486

}

487

custom_argv[0] = argv[0];

488

custom_argv[1] = NULL;

489

356

490

while(true){

357

491

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

358

492

if(sret == -1){

366

500

continue;

367

501

}

368

502

new_arg = strdup(p);

369

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

370

if (custom_argv == NULL){

371

perror("addcustomargument");

372

exitstatus = EXIT_FAILURE;

373

goto end;

374

}

503

if(new_arg == NULL){

504

perror("strdup");

505

exitstatus = EXIT_FAILURE;

506

free(org_line);

507

goto fallback;

508

}

509

510

custom_argc += 1;

511

custom_argv = realloc(custom_argv, sizeof(char *)

512

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

513

if(custom_argv == NULL){

514

perror("realloc");

515

exitstatus = EXIT_FAILURE;

516

free(org_line);

517

goto fallback;

518

}

519

custom_argv[custom_argc-1] = new_arg;

520

custom_argv[custom_argc] = NULL;

375

521

}

376

522

}

377

523

free(org_line);

381

527

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

382

528

perror("fopen");

383

529

exitstatus = EXIT_FAILURE;

384

goto end;

530

goto fallback;

385

531

}

386

532

}

387

533

388

534

if(custom_argv != NULL){

389

custom_argv[0] = argv[0];

390

535

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

391

536

if (ret == ARGP_ERR_UNKNOWN){

392

537

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

393

538

exitstatus = EXIT_FAILURE;

394

goto end;

539

goto fallback;

395

540

}

396

541

}

397

542

402

547

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

403

548

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

404

549

}

550

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

551

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

552

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

553

}

405

554

}

406

555

}

407

556

414

563

if (ret == -1){

415

564

perror("setgid");

416

565

}

566

567

if (plugindir == NULL){

568

dir = opendir(PDIR);

569

} else {

570

dir = opendir(plugindir);

571

}

417

572

418

dir = opendir(plugindir);

419

573

if(dir == NULL){

420

574

perror("Could not open plugin dir");

421

575

exitstatus = EXIT_FAILURE;

422

goto end;

576

goto fallback;

423

577

}

424

578

425

579

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

430

584

if(ret < 0){

431

585

perror("set_cloexec_flag");

432

586

exitstatus = EXIT_FAILURE;

433

goto end;

587

goto fallback;

434

588

}

435

589

}

436

590

}

445

599

if (errno == EBADF){

446

600

perror("readdir");

447

601

exitstatus = EXIT_FAILURE;

448

goto end;

602

goto fallback;

449

603

}

450

604

break;

451

605

}

496

650

continue;

497

651

}

498

652

}

499

500

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

501

if (filename == NULL){

502

perror("malloc");

653

654

char *filename;

655

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

656

if(ret < 0){

657

perror("asprintf");

503

658

continue;

504

659

}

505

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

506

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

507

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

508

660

509

661

ret = stat(filename, &st);

510

662

if (ret == -1){

521

673

free(filename);

522

674

continue;

523

675

}

524

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

676

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

677

if(p == NULL){

678

perror("getplugin");

679

free(filename);

680

continue;

681

}

682

if(p->disabled){

525

683

if(debug){

526

684

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

527

685

dirst->d_name);

529

687

free(filename);

530

688

continue;

531

689

}

532

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

533

690

{

534

691

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

535

692

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

536

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

537

addargument(p, *a);

538

}

539

}

540

int pipefd[2];

693

if(g != NULL){

694

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

695

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

696

perror("add_argument");

697

}

698

}

699

/* Add global environment variables */

700

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

701

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

702

perror("add_environment");

703

}

704

}

705

}

706

}

707

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

708

using execve and need to duplicate the environment from this

709

process, too. */

710

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

711

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

712

char *copy = strdup(*e);

713

if(copy == NULL){

714

perror("strdup");

715

continue;

716

}

717

if(not add_environment(p, copy)){

718

perror("add_environment");

719

}

720

}

721

}

722

723

int pipefd[2];

541

724

ret = pipe(pipefd);

542

725

if (ret == -1){

543

726

perror("pipe");

544

727

exitstatus = EXIT_FAILURE;

545

goto end;

728

goto fallback;

546

729

}

547

730

ret = set_cloexec_flag(pipefd[0]);

548

731

if(ret < 0){

549

732

perror("set_cloexec_flag");

550

733

exitstatus = EXIT_FAILURE;

551

goto end;

734

goto fallback;

552

735

}

553

736

ret = set_cloexec_flag(pipefd[1]);

554

737

if(ret < 0){

555

738

perror("set_cloexec_flag");

556

739

exitstatus = EXIT_FAILURE;

557

goto end;

740

goto fallback;

558

741

}

559

742

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

560

743

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

561

744

if(ret < 0){

562

745

perror("sigprocmask");

563

746

exitstatus = EXIT_FAILURE;

564

goto end;

747

goto fallback;

565

748

}

566

749

// Starting a new process to be watched

567

750

pid_t pid = fork();

568

751

if(pid == -1){

569

752

perror("fork");

570

753

exitstatus = EXIT_FAILURE;

571

goto end;

754

goto fallback;

572

755

}

573

756

if(pid == 0){

574

757

/* this is the child process */

594

777

above and must now close it manually here. */

595

778

closedir(dir);

596

779

}

597

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

598

perror("execv");

599

_exit(EXIT_FAILURE);

780

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

781

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

782

perror("execv");

783

_exit(EXIT_FAILURE);

784

}

785

} else {

786

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

787

perror("execve");

788

_exit(EXIT_FAILURE);

789

}

600

790

}

601

791

/* no return */

602

792

}

611

801

perror("sigprocmask");

612

802

}

613

803

exitstatus = EXIT_FAILURE;

614

goto end;

804

goto fallback;

615

805

}

616

806

617

807

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

625

815

if(ret < 0){

626

816

perror("sigprocmask");

627

817

exitstatus = EXIT_FAILURE;

628

goto end;

818

goto fallback;

629

819

}

630

820

631

821

FD_SET(new_process->fd, &rfds_all);

635

825

}

636

826

637

827

}

638

639

/* Free the plugin list */

640

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

641

next = plugin_list->next;

642

free(plugin_list->argv);

643

free(plugin_list);

644

}

828

829

free_plugin_list(plugin_list);

830

plugin_list = NULL;

645

831

646

832

closedir(dir);

647

833

dir = NULL;

657

843

if (select_ret == -1){

658

844

perror("select");

659

845

exitstatus = EXIT_FAILURE;

660

goto end;

846

goto fallback;

661

847

}

662

848

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

663

849

from one of them */

685

871

/* Remove the plugin */

686

872

FD_CLR(proc->fd, &rfds_all);

687

873

/* Block signal while modifying process_list */

688

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

874

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

689

875

if(ret < 0){

690

876

perror("sigprocmask");

691

877

exitstatus = EXIT_FAILURE;

692

goto end;

878

goto fallback;

693

879

}

694

880

/* Delete this process entry from the list */

695

881

if(process_list == proc){

719

905

}

720

906

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

721

907

722

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

908

bool bret = print_out_password(proc->buffer,

909

proc->buffer_length);

723

910

if(not bret){

724

911

perror("print_out_password");

725

912

exitstatus = EXIT_FAILURE;

726

913

}

727

goto end;

914

goto fallback;

728

915

}

729

916

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

730

917

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

738

925

if (proc->buffer == NULL){

739

926

perror("malloc");

740

927

exitstatus = EXIT_FAILURE;

741

goto end;

928

goto fallback;

742

929

}

743

930

proc->buffer_size += BUFFER_SIZE;

744

931

}

759

946

}

760

947

761

948

762

end:

949

fallback:

763

950

764

951

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

765

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

952

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

953

occured */

766

954

bool bret;

767

955

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

768

956

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

770

958

if(not bret){

771

959

perror("print_out_password");

772

960

exitstatus = EXIT_FAILURE;

773

goto end;

774

961

}

775

962

}

776

963

777

964

/* Restore old signal handler */

778

sigaction(SIGCHLD, &old_sigchld_action, NULL);

779

780

free(custom_argv);

781

782

/* Free the plugin list */

783

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

784

next = plugin_list->next;

785

free(plugin_list->argv);

786

free(plugin_list);

787

}

965

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

966

if(ret == -1){

967

perror("sigaction");

968

exitstatus = EXIT_FAILURE;

969

}

970

971

if(custom_argv != NULL){

972

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

973

free(*arg);

974

}

975

free(custom_argv);

976

}

977

free_plugin_list(plugin_list);

788

978

789

979

if(dir != NULL){

790

980

closedir(dir);

810

1000

if(errno != ECHILD){

811

1001

perror("wait");

812

1002

}

1003

1004

free(plugindir);

1005

free(argfile);

813

1006

814

1007

return exitstatus;

815

1008

}