/mandos/release : revision 130

72

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

73

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

74

75

struct plugin;

76

77

typedef struct plugin{

78

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

79

char **argv;

80

int argc;

81

char **environ;

82

int envc;

83

bool disabled;

84

85

/* Variables used for running processes*/

75

struct process;

76

77

typedef struct process{

86

78

pid_t pid;

87

79

int fd;

88

80

char *buffer;

91

83

bool eof;

92

84

volatile bool completed;

93

85

volatile int status;

86

struct process *next;

87

} process;

88

89

typedef struct plugin{

90

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

91

char **argv;

92

int argc;

93

char **environ;

94

int envc;

95

bool disabled;

94

96

struct plugin *next;

95

97

} plugin;

96

98

97

static plugin *plugin_list = NULL;

98

99

/* Gets an existing plugin based on name,

100

or if none is found, creates a new one */

101

static plugin *getplugin(char *name){

102

/* Check for exiting plugin with that name */

103

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

99

static plugin *getplugin(char *name, plugin **plugin_list){

100

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

104

101

if ((p->name == name)

105

102

or (p->name and name and (strcmp(p->name, name) == 0))){

106

103

return p;

121

118

122

119

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

123

120

.argc = 1,

121

.envc = 0,

124

122

.disabled = false,

125

.next = plugin_list };

123

.next = *plugin_list };

126

124

127

125

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

128

126

if (new_plugin->argv == NULL){

132

130

}

133

131

new_plugin->argv[0] = copy_name;

134

132

new_plugin->argv[1] = NULL;

135

133

136

134

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

137

135

if(new_plugin->environ == NULL){

138

136

free(copy_name);

141

139

return NULL;

142

140

}

143

141

new_plugin->environ[0] = NULL;

144

145

142

/* Append the new plugin to the list */

146

plugin_list = new_plugin;

143

*plugin_list = new_plugin;

147

144

return new_plugin;

148

145

}

149

146

179

176

}

180

177

181

178

/* Add to a plugin's environment */

182

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

179

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

183

180

if(p == NULL){

184

181

return false;

185

182

}

186

/* namelen = length of name of environment variable */

187

size_t namelen = (size_t)(strchrnul(def, '=') - def);

188

/* Search for this environment variable */

189

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

190

if(strncmp(*e, def, namelen + 1) == 0){

191

/* It already exists */

192

if(replace){

193

char *new = realloc(*e, strlen(def) + 1);

194

if(new == NULL){

195

return false;

196

}

197

*e = new;

198

strcpy(*e, def);

199

}

200

return true;

201

}

202

}

203

183

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

204

184

}

205

185

186

206

187

/*

207

188

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

208

189

* Descriptor Flags".

219

200

return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);

220

201

}

221

202

203

process *process_list = NULL;

222

204

223

205

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

224

206

status. */

225

207

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

226

208

while(true){

227

plugin *proc = plugin_list;

209

process *proc = process_list;

228

210

int status;

229

211

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

230

212

if(pid == 0){

238

220

/* No child processes */

239

221

break;

240

222

}

241

223

242

224

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

243

225

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

244

226

proc = proc->next;

252

234

}

253

235

}

254

236

255

/* Prints out a password to stdout */

256

237

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

257

238

ssize_t ret;

239

if(length>0 and buffer[length-1] == '\n'){

240

length--;

241

}

258

242

for(size_t written = 0; written < length; written += (size_t)ret){

259

243

ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,

260

244

length - written));

265

249

return true;

266

250

}

267

251

268

/* Removes and free a plugin from the plugin list */

269

static void free_plugin(plugin *plugin_node){

270

271

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

272

free(*arg);

273

}

274

free(plugin_node->argv);

275

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

276

free(*env);

277

}

278

free(plugin_node->environ);

279

free(plugin_node->buffer);

280

281

/* Removes the plugin from the singly-linked list */

282

if(plugin_node == plugin_list){

283

/* First one - simple */

284

plugin_list = plugin_list->next;

285

} else {

286

/* Second one or later */

287

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

288

if(p->next == plugin_node){

289

p->next = plugin_node->next;

290

break;

291

}

292

}

293

}

294

295

free(plugin_node);

296

}

297

298

static void free_plugin_list(void){

299

while(plugin_list != NULL){

300

free_plugin(plugin_list);

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);

301

264

}

302

265

}

303

266

341

304

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

342

305

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

343

306

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

344

{ .name = "global-env", .key = 'G',

307

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

345

308

.arg = "VAR=value",

346

309

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

347

310

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

348

311

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

349

312

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

350

{ .name = "env-for", .key = 'E',

313

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

351

314

.arg = "PLUGIN:ENV=value",

352

315

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

353

316

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

354

317

.arg = "PLUGIN",

355

318

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

356

{ .name = "enable", .key = 'e',

357

.arg = "PLUGIN",

358

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

359

319

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

360

320

.arg = "DIRECTORY",

361

321

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

373

333

{ .name = NULL }

374

334

};

375

335

376

error_t parse_opt (int key, char *arg, __attribute__((unused))

377

struct argp_state *state) {

336

error_t parse_opt (int key, char *arg, struct argp_state *state) {

337

/* Get the INPUT argument from `argp_parse', which we know is a

338

pointer to our plugin list pointer. */

339

plugin **plugins = state->input;

378

340

switch (key) {

379

case 'g': /* --global-options */

341

case 'g':

380

342

if (arg != NULL){

381

343

char *p;

382

344

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

383

345

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

384

346

continue;

385

347

}

386

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

348

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

387

349

perror("add_argument");

388

350

return ARGP_ERR_UNKNOWN;

389

351

}

390

352

}

391

353

}

392

354

break;

393

case 'G': /* --global-env */

355

case 'e':

394

356

if(arg == NULL){

395

357

break;

396

358

}

399

361

if(envdef == NULL){

400

362

break;

401

363

}

402

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

364

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

403

365

perror("add_environment");

404

366

}

405

367

}

406

368

break;

407

case 'o': /* --options-for */

369

case 'o':

408

370

if (arg != NULL){

409

371

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

410

if(p_name[0] == '\0' or arg == NULL){

372

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

411

373

break;

412

374

}

413

375

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

414

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

376

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

415

377

break;

416

378

}

417

char *p;

418

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

419

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

420

continue;

421

}

422

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

423

perror("add_argument");

424

return ARGP_ERR_UNKNOWN;

379

if(opt != NULL){

380

char *p;

381

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

382

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

383

continue;

384

}

385

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

386

perror("add_argument");

387

return ARGP_ERR_UNKNOWN;

388

}

425

389

}

426

390

}

427

391

}

428

392

break;

429

case 'E': /* --env-for */

393

case 'f':

430

394

if(arg == NULL){

431

395

break;

432

396

}

440

404

break;

441

405

}

442

406

envdef++;

443

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

407

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

444

408

perror("add_environment");

445

409

}

446

410

}

447

411

break;

448

case 'd': /* --disable */

412

case 'd':

449

413

if (arg != NULL){

450

plugin *p = getplugin(arg);

414

plugin *p = getplugin(arg, plugins);

451

415

if(p == NULL){

452

416

return ARGP_ERR_UNKNOWN;

453

417

}

454

418

p->disabled = true;

455

419

}

456

420

break;

457

case 'e': /* --enable */

458

if (arg != NULL){

459

plugin *p = getplugin(arg);

460

if(p == NULL){

461

return ARGP_ERR_UNKNOWN;

462

}

463

p->disabled = false;

464

}

465

break;

466

case 128: /* --plugin-dir */

421

case 128:

467

422

plugindir = strdup(arg);

468

423

if(plugindir == NULL){

469

424

perror("strdup");

470

425

}

471

426

break;

472

case 129: /* --config-file */

473

/* This is already done by parse_opt_config_file() */

474

break;

475

case 130: /* --userid */

427

case 129:

428

argfile = strdup(arg);

429

if(argfile == NULL){

430

perror("strdup");

431

}

432

break;

433

case 130:

476

434

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

477

435

break;

478

case 131: /* --groupid */

436

case 131:

479

437

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

480

438

break;

481

case 132: /* --debug */

439

case 132:

482

440

debug = true;

483

441

break;

484

442

case ARGP_KEY_ARG:

492

450

return 0;

493

451

}

494

452

495

/* This option parser is the same as parse_opt() above, except it

496

ignores everything but the --config-file option. */

497

error_t parse_opt_config_file (int key, char *arg,

498

__attribute__((unused))

499

struct argp_state *state) {

500

switch (key) {

501

case 'g': /* --global-options */

502

case 'G': /* --global-env */

503

case 'o': /* --options-for */

504

case 'E': /* --env-for */

505

case 'd': /* --disable */

506

case 'e': /* --enable */

507

case 128: /* --plugin-dir */

508

break;

509

case 129: /* --config-file */

510

argfile = strdup(arg);

511

if(argfile == NULL){

512

perror("strdup");

513

}

514

break;

515

case 130: /* --userid */

516

case 131: /* --groupid */

517

case 132: /* --debug */

518

case ARGP_KEY_ARG:

519

case ARGP_KEY_END:

520

break;

521

default:

522

return ARGP_ERR_UNKNOWN;

523

}

524

return 0;

525

}

453

plugin *plugin_list = NULL;

526

454

527

struct argp argp = { .options = options,

528

.parser = parse_opt_config_file,

529

.args_doc = "",

455

struct argp argp = { .options = options, .parser = parse_opt,

456

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

530

457

.doc = "Mandos plugin runner -- Run plugins" };

531

458

532

/* Parse using the parse_opt_config_file in order to get the custom

533

config file location, if any. */

534

ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);

459

ret = argp_parse (&argp, argc, argv, 0, 0, &plugin_list);

535

460

if (ret == ARGP_ERR_UNKNOWN){

536

461

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

537

462

exitstatus = EXIT_FAILURE;

538

463

goto fallback;

539

464

}

540

541

/* Reset to the normal argument parser */

542

argp.parser = parse_opt;

543

544

/* Open the configfile if available */

465

545

466

if (argfile == NULL){

546

467

conffp = fopen(AFILE, "r");

547

468

} else {

548

469

conffp = fopen(argfile, "r");

549

}

470

}

471

550

472

if(conffp != NULL){

551

473

char *org_line = NULL;

552

474

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

564

486

}

565

487

custom_argv[0] = argv[0];

566

488

custom_argv[1] = NULL;

567

568

/* for each line in the config file, strip whitespace and ignore

569

commented text */

489

570

490

while(true){

571

491

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

572

492

if(sret == -1){

601

521

}

602

522

}

603

523

free(org_line);

604

} else {

524

} else{

605

525

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

606

526

not affect opening plugins */

607

527

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

610

530

goto fallback;

611

531

}

612

532

}

613

/* If there was any arguments from configuration file,

614

pass them to parser as command arguments */

533

615

534

if(custom_argv != NULL){

616

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

617

0, NULL);

535

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

618

536

if (ret == ARGP_ERR_UNKNOWN){

619

537

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

620

538

exitstatus = EXIT_FAILURE;

622

540

}

623

541

}

624

542

625

/* Parse actual command line arguments, to let them override the

626

config file */

627

ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);

628

if (ret == ARGP_ERR_UNKNOWN){

629

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

630

exitstatus = EXIT_FAILURE;

631

goto fallback;

632

}

633

634

543

if(debug){

635

544

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

636

545

fprintf(stderr, "Plugin: %s has %d arguments\n",

645

554

}

646

555

}

647

556

648

/* Strip permissions down to nobody */

649

557

ret = setuid(uid);

650

558

if (ret == -1){

651

559

perror("setuid");

652

}

560

}

561

653

562

setgid(gid);

654

563

if (ret == -1){

655

564

perror("setgid");

656

565

}

657

566

658

567

if (plugindir == NULL){

659

568

dir = opendir(PDIR);

660

569

} else {

682

591

683

592

FD_ZERO(&rfds_all);

684

593

685

/* Read and execute any executable in the plugin directory*/

686

594

while(true){

687

595

dirst = readdir(dir);

688

596

689

/* All directory entries have been processed */

597

// All directory entries have been processed

690

598

if(dirst == NULL){

691

599

if (errno == EBADF){

692

600

perror("readdir");

698

606

699

607

d_name_len = strlen(dirst->d_name);

700

608

701

/* Ignore dotfiles, backup files and other junk */

609

// Ignore dotfiles, backup files and other junk

702

610

{

703

611

bool bad_name = false;

704

612

719

627

break;

720

628

}

721

629

}

630

722

631

if(bad_name){

723

632

continue;

724

633

}

634

725

635

for(const char **suf = bad_suffixes; *suf != NULL; suf++){

726

636

size_t suf_len = strlen(*suf);

727

637

if((d_name_len >= suf_len)

742

652

}

743

653

744

654

char *filename;

745

if(plugindir == NULL){

746

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

747

} else {

748

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

749

}

655

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

750

656

if(ret < 0){

751

657

perror("asprintf");

752

658

continue;

758

664

free(filename);

759

665

continue;

760

666

}

761

762

/* Ignore non-executable files */

667

763

668

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

764

669

if(debug){

765

670

fprintf(stderr, "Ignoring plugin dir entry \"%s\""

768

673

free(filename);

769

674

continue;

770

675

}

771

772

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

676

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

773

677

if(p == NULL){

774

678

perror("getplugin");

775

679

free(filename);

785

689

}

786

690

{

787

691

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

788

plugin *g = getplugin(NULL);

692

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

789

693

if(g != NULL){

790

694

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

791

695

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

794

698

}

795

699

/* Add global environment variables */

796

700

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

797

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

701

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

798

702

perror("add_environment");

799

703

}

800

704

}

805

709

process, too. */

806

710

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

807

711

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

808

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

712

char *copy = strdup(*e);

713

if(copy == NULL){

714

perror("strdup");

715

continue;

716

}

717

if(not add_environment(p, copy)){

809

718

perror("add_environment");

810

719

}

811

720

}

818

727

exitstatus = EXIT_FAILURE;

819

728

goto fallback;

820

729

}

821

/* Ask OS to automatic close the pipe on exec */

822

730

ret = set_cloexec_flag(pipefd[0]);

823

731

if(ret < 0){

824

732

perror("set_cloexec_flag");

838

746

exitstatus = EXIT_FAILURE;

839

747

goto fallback;

840

748

}

841

/* Starting a new process to be watched */

749

// Starting a new process to be watched

842

750

pid_t pid = fork();

843

751

if(pid == -1){

844

752

perror("fork");

882

790

}

883

791

/* no return */

884

792

}

885

/* Parent process */

886

close(pipefd[1]); /* Close unused write end of pipe */

793

/* parent process */

887

794

free(filename);

888

plugin *new_plugin = getplugin(dirst->d_name);

889

if (new_plugin == NULL){

890

perror("getplugin");

795

close(pipefd[1]); /* close unused write end of pipe */

796

process *new_process = malloc(sizeof(process));

797

if (new_process == NULL){

798

perror("malloc");

891

799

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

892

800

if(ret < 0){

893

perror("sigprocmask");

801

perror("sigprocmask");

894

802

}

895

803

exitstatus = EXIT_FAILURE;

896

804

goto fallback;

897

805

}

898

806

899

new_plugin->pid = pid;

900

new_plugin->fd = pipefd[0];

901

807

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

808

.fd = pipefd[0],

809

.next = process_list };

810

// List handling

811

process_list = new_process;

902

812

/* Unblock SIGCHLD so signal handler can be run if this process

903

813

has already completed */

904

814

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

908

818

goto fallback;

909

819

}

910

820

911

FD_SET(new_plugin->fd, &rfds_all);

821

FD_SET(new_process->fd, &rfds_all);

912

822

913

if (maxfd < new_plugin->fd){

914

maxfd = new_plugin->fd;

823

if (maxfd < new_process->fd){

824

maxfd = new_process->fd;

915

825

}

916

826

917

827

}

828

829

free_plugin_list(plugin_list);

830

plugin_list = NULL;

918

831

919

832

closedir(dir);

920

833

dir = NULL;

921

922

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

923

if(p->pid != 0){

924

break;

925

}

926

if(p->next == NULL){

927

fprintf(stderr, "No plugin processes started. Incorrect plugin"

928

" directory?\n");

929

free_plugin_list();

930

}

834

835

if (process_list == NULL){

836

fprintf(stderr, "No plugin processes started. Incorrect plugin"

837

" directory?\n");

838

process_list = NULL;

931

839

}

932

933

/* Main loop while running plugins exist */

934

while(plugin_list){

840

while(process_list){

935

841

fd_set rfds = rfds_all;

936

842

int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);

937

843

if (select_ret == -1){

941

847

}

942

848

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

943

849

from one of them */

944

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

850

for(process *proc = process_list; proc ; proc = proc->next){

945

851

/* Is this process completely done? */

946

852

if(proc->eof and proc->completed){

947

853

/* Only accept the plugin output if it exited cleanly */

948

854

if(not WIFEXITED(proc->status)

949

855

or WEXITSTATUS(proc->status) != 0){

950

856

/* Bad exit by plugin */

951

952

857

if(debug){

953

858

if(WIFEXITED(proc->status)){

954

859

fprintf(stderr, "Plugin %u exited with status %d\n",

963

868

(unsigned int) (proc->pid));

964

869

}

965

870

}

966

967

871

/* Remove the plugin */

968

872

FD_CLR(proc->fd, &rfds_all);

969

970

873

/* Block signal while modifying process_list */

971

874

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

972

875

if(ret < 0){

974

877

exitstatus = EXIT_FAILURE;

975

878

goto fallback;

976

879

}

977

free_plugin(proc);

880

/* Delete this process entry from the list */

881

if(process_list == proc){

882

/* First one - simple */

883

process_list = proc->next;

884

} else {

885

/* Second one or later */

886

for(process *p = process_list; p != NULL; p = p->next){

887

if(p->next == proc){

888

p->next = proc->next;

889

break;

890

}

891

}

892

}

978

893

/* We are done modifying process list, so unblock signal */

979

894

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

980

895

NULL);

981

896

if(ret < 0){

982

897

perror("sigprocmask");

983

exitstatus = EXIT_FAILURE;

984

goto fallback;

985

}

986

987

if(plugin_list == NULL){

988

break;

989

}

990

continue;

898

}

899

free(proc->buffer);

900

free(proc);

901

/* We deleted this process from the list, so we can't go

902

proc->next. Therefore, start over from the beginning of

903

the process list */

904

break;

991

905

}

992

993

906

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

994

907

995

908

bool bret = print_out_password(proc->buffer,

1000

913

}

1001

914

goto fallback;

1002

915

}

1003

1004

916

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

1005

917

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

1006

918

/* This process had nothing to say at this time */

1036

948

1037

949

fallback:

1038

950

1039

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

951

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

1040

952

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

1041

953

occured */

1042

954

bool bret;

1043

955

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

1044

956

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

1045

size_t len = strlen(passwordbuffer);

1046

/* Strip trailing newline */

1047

if(len > 0 and passwordbuffer[len-1] == '\n'){

1048

passwordbuffer[len-1] = '\0'; /* not strictly necessary */

1049

len--;

1050

}

1051

bret = print_out_password(passwordbuffer, len);

957

bret = print_out_password(passwordbuffer, strlen(passwordbuffer));

1052

958

if(not bret){

1053

959

perror("print_out_password");

1054

960

exitstatus = EXIT_FAILURE;

1068

974

}

1069

975

free(custom_argv);

1070

976

}

977

free_plugin_list(plugin_list);

1071

978

1072

979

if(dir != NULL){

1073

980

closedir(dir);

1074

981

}

1075

982

1076

983

/* Free the process list and kill the processes */

1077

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

1078

if(p->pid != 0){

1079

close(p->fd);

1080

ret = kill(p->pid, SIGTERM);

1081

if(ret == -1 and errno != ESRCH){

1082

/* Set-uid proccesses might not get closed */

1083

perror("kill");

1084

}

984

for(process *next; process_list != NULL; process_list = next){

985

next = process_list->next;

986

close(process_list->fd);

987

ret = kill(process_list->pid, SIGTERM);

988

if(ret == -1 and errno != ESRCH){

989

/* set-uid proccesses migth not get closed */

990

perror("kill");

1085

991

}

992

free(process_list->buffer);

993

free(process_list);

1086

994

}

1087

995

1088

996

/* Wait for any remaining child processes to terminate */

1093

1001

perror("wait");

1094

1002

}

1095

1003

1096

free_plugin_list();

1097

1098

1004

free(plugindir);

1099

1005

free(argfile);

1100

1006