/mandos/trunk : revision 173

72

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

73

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

74

75

struct process;

76

77

typedef struct process{

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*/

78

86

pid_t pid;

79

87

int fd;

80

88

char *buffer;

83

91

bool eof;

84

92

volatile bool completed;

85

93

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;

96

94

struct plugin *next;

97

95

} plugin;

98

96

99

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

100

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

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){

101

104

if ((p->name == name)

102

105

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

103

106

return p;

118

121

119

122

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

120

123

.argc = 1,

121

.envc = 0,

122

124

.disabled = false,

123

.next = *plugin_list };

125

.next = plugin_list };

124

126

125

127

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

126

128

if (new_plugin->argv == NULL){

130

132

}

131

133

new_plugin->argv[0] = copy_name;

132

134

new_plugin->argv[1] = NULL;

133

135

134

136

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

135

137

if(new_plugin->environ == NULL){

136

138

free(copy_name);

139

141

return NULL;

140

142

}

141

143

new_plugin->environ[0] = NULL;

144

142

145

/* Append the new plugin to the list */

143

*plugin_list = new_plugin;

146

plugin_list = new_plugin;

144

147

return new_plugin;

145

148

}

146

149

176

179

}

177

180

178

181

/* Add to a plugin's environment */

179

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

182

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

180

183

if(p == NULL){

181

184

return false;

182

185

}

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

}

183

203

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

184

204

}

185

205

186

187

206

/*

188

207

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

189

208

* Descriptor Flags".

200

219

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

201

220

}

202

221

203

process *process_list = NULL;

204

222

205

223

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

206

224

status. */

207

225

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

208

226

while(true){

209

process *proc = process_list;

227

plugin *proc = plugin_list;

210

228

int status;

211

229

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

212

230

if(pid == 0){

220

238

/* No child processes */

221

239

break;

222

240

}

223

241

224

242

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

225

243

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

226

244

proc = proc->next;

234

252

}

235

253

}

236

254

255

/* Prints out a password to stdout */

237

256

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

238

257

ssize_t ret;

239

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

240

length--;

241

}

242

258

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

243

259

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

244

260

length - written));

249

265

return true;

250

266

}

251

267

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);

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);

264

301

}

265

302

}

266

303

304

341

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

305

342

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

306

343

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

307

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

344

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

308

345

.arg = "VAR=value",

309

346

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

310

347

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

311

348

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

312

349

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

313

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

350

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

314

351

.arg = "PLUGIN:ENV=value",

315

352

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

316

353

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

317

354

.arg = "PLUGIN",

318

355

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

356

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

357

.arg = "PLUGIN",

358

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

319

359

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

320

360

.arg = "DIRECTORY",

321

361

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

333

373

{ .name = NULL }

334

374

};

335

375

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;

376

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

377

struct argp_state *state) {

340

378

switch (key) {

341

case 'g':

379

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

342

380

if (arg != NULL){

343

381

char *p;

344

382

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

345

383

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

346

384

continue;

347

385

}

348

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

386

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

349

387

perror("add_argument");

350

388

return ARGP_ERR_UNKNOWN;

351

389

}

352

390

}

353

391

}

354

392

break;

355

case 'e':

393

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

356

394

if(arg == NULL){

357

395

break;

358

396

}

361

399

if(envdef == NULL){

362

400

break;

363

401

}

364

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

402

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

365

403

perror("add_environment");

366

404

}

367

405

}

368

406

break;

369

case 'o':

407

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

370

408

if (arg != NULL){

371

409

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

372

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

410

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

373

411

break;

374

412

}

375

413

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

376

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

414

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

377

415

break;

378

416

}

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

}

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;

389

425

}

390

426

}

391

427

}

392

428

break;

393

case 'f':

429

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

394

430

if(arg == NULL){

395

431

break;

396

432

}

404

440

break;

405

441

}

406

442

envdef++;

407

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

443

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

408

444

perror("add_environment");

409

445

}

410

446

}

411

447

break;

412

case 'd':

448

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

413

449

if (arg != NULL){

414

plugin *p = getplugin(arg, plugins);

450

plugin *p = getplugin(arg);

415

451

if(p == NULL){

416

452

return ARGP_ERR_UNKNOWN;

417

453

}

418

454

p->disabled = true;

419

455

}

420

456

break;

421

case 128:

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 */

422

467

plugindir = strdup(arg);

423

468

if(plugindir == NULL){

424

469

perror("strdup");

425

470

}

426

471

break;

427

case 129:

428

argfile = strdup(arg);

429

if(argfile == NULL){

430

perror("strdup");

431

}

432

break;

433

case 130:

472

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

473

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

474

break;

475

case 130: /* --userid */

434

476

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

435

477

break;

436

case 131:

478

case 131: /* --groupid */

437

479

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

438

480

break;

439

case 132:

481

case 132: /* --debug */

440

482

debug = true;

441

483

break;

442

484

case ARGP_KEY_ARG:

450

492

return 0;

451

493

}

452

494

453

plugin *plugin_list = NULL;

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

}

454

526

455

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

456

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

527

struct argp argp = { .options = options,

528

.parser = parse_opt_config_file,

529

.args_doc = "",

457

530

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

458

531

459

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

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);

460

535

if (ret == ARGP_ERR_UNKNOWN){

461

536

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

462

537

exitstatus = EXIT_FAILURE;

463

538

goto fallback;

464

539

}

465

540

541

/* Reset to the normal argument parser */

542

argp.parser = parse_opt;

543

544

/* Open the configfile if available */

466

545

if (argfile == NULL){

467

546

conffp = fopen(AFILE, "r");

468

547

} else {

469

548

conffp = fopen(argfile, "r");

470

}

471

549

}

472

550

if(conffp != NULL){

473

551

char *org_line = NULL;

474

552

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

486

564

}

487

565

custom_argv[0] = argv[0];

488

566

custom_argv[1] = NULL;

489

567

568

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

569

commented text */

490

570

while(true){

491

571

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

492

572

if(sret == -1){

521

601

}

522

602

}

523

603

free(org_line);

524

} else{

604

} else {

525

605

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

526

606

not affect opening plugins */

527

607

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

530

610

goto fallback;

531

611

}

532

612

}

533

613

/* If there was any arguments from configuration file,

614

pass them to parser as command arguments */

534

615

if(custom_argv != NULL){

535

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

616

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

617

0, NULL);

536

618

if (ret == ARGP_ERR_UNKNOWN){

537

619

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

538

620

exitstatus = EXIT_FAILURE;

540

622

}

541

623

}

542

624

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

543

634

if(debug){

544

635

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

545

636

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

554

645

}

555

646

}

556

647

648

/* Strip permissions down to nobody */

557

649

ret = setuid(uid);

558

650

if (ret == -1){

559

651

perror("setuid");

560

}

561

652

}

562

653

setgid(gid);

563

654

if (ret == -1){

564

655

perror("setgid");

565

656

}

566

657

567

658

if (plugindir == NULL){

568

659

dir = opendir(PDIR);

569

660

} else {

591

682

592

683

FD_ZERO(&rfds_all);

593

684

685

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

594

686

while(true){

595

687

dirst = readdir(dir);

596

688

597

// All directory entries have been processed

689

/* All directory entries have been processed */

598

690

if(dirst == NULL){

599

691

if (errno == EBADF){

600

692

perror("readdir");

606

698

607

699

d_name_len = strlen(dirst->d_name);

608

700

609

// Ignore dotfiles, backup files and other junk

701

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

610

702

{

611

703

bool bad_name = false;

612

704

627

719

break;

628

720

}

629

721

}

630

631

722

if(bad_name){

632

723

continue;

633

724

}

634

635

725

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

636

726

size_t suf_len = strlen(*suf);

637

727

if((d_name_len >= suf_len)

652

742

}

653

743

654

744

char *filename;

655

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

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

}

656

750

if(ret < 0){

657

751

perror("asprintf");

658

752

continue;

664

758

free(filename);

665

759

continue;

666

760

}

667

761

762

/* Ignore non-executable files */

668

763

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

669

764

if(debug){

670

765

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

673

768

free(filename);

674

769

continue;

675

770

}

676

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

771

772

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

677

773

if(p == NULL){

678

774

perror("getplugin");

679

775

free(filename);

689

785

}

690

786

{

691

787

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

692

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

788

plugin *g = getplugin(NULL);

693

789

if(g != NULL){

694

790

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

695

791

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

698

794

}

699

795

/* Add global environment variables */

700

796

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

701

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

797

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

702

798

perror("add_environment");

703

799

}

704

800

}

709

805

process, too. */

710

806

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

711

807

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)){

808

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

718

809

perror("add_environment");

719

810

}

720

811

}

727

818

exitstatus = EXIT_FAILURE;

728

819

goto fallback;

729

820

}

821

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

730

822

ret = set_cloexec_flag(pipefd[0]);

731

823

if(ret < 0){

732

824

perror("set_cloexec_flag");

746

838

exitstatus = EXIT_FAILURE;

747

839

goto fallback;

748

840

}

749

// Starting a new process to be watched

841

/* Starting a new process to be watched */

750

842

pid_t pid = fork();

751

843

if(pid == -1){

752

844

perror("fork");

790

882

}

791

883

/* no return */

792

884

}

793

/* parent process */

885

/* Parent process */

886

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

794

887

free(filename);

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");

888

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

889

if (new_plugin == NULL){

890

perror("getplugin");

799

891

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

800

892

if(ret < 0){

801

perror("sigprocmask");

893

perror("sigprocmask");

802

894

}

803

895

exitstatus = EXIT_FAILURE;

804

896

goto fallback;

805

897

}

806

898

807

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

808

.fd = pipefd[0],

809

.next = process_list };

810

// List handling

811

process_list = new_process;

899

new_plugin->pid = pid;

900

new_plugin->fd = pipefd[0];

901

812

902

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

813

903

has already completed */

814

904

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

818

908

goto fallback;

819

909

}

820

910

821

FD_SET(new_process->fd, &rfds_all);

911

FD_SET(new_plugin->fd, &rfds_all);

822

912

823

if (maxfd < new_process->fd){

824

maxfd = new_process->fd;

913

if (maxfd < new_plugin->fd){

914

maxfd = new_plugin->fd;

825

915

}

826

916

827

917

}

828

829

free_plugin_list(plugin_list);

830

plugin_list = NULL;

831

918

832

919

closedir(dir);

833

920

dir = NULL;

834

835

if (process_list == NULL){

836

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

837

" directory?\n");

838

process_list = 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

}

839

931

}

840

while(process_list){

932

933

/* Main loop while running plugins exist */

934

while(plugin_list){

841

935

fd_set rfds = rfds_all;

842

936

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

843

937

if (select_ret == -1){

847

941

}

848

942

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

849

943

from one of them */

850

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

944

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

851

945

/* Is this process completely done? */

852

946

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

853

947

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

854

948

if(not WIFEXITED(proc->status)

855

949

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

856

950

/* Bad exit by plugin */

951

857

952

if(debug){

858

953

if(WIFEXITED(proc->status)){

859

954

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

868

963

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

869

964

}

870

965

}

966

871

967

/* Remove the plugin */

872

968

FD_CLR(proc->fd, &rfds_all);

969

873

970

/* Block signal while modifying process_list */

874

971

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

875

972

if(ret < 0){

877

974

exitstatus = EXIT_FAILURE;

878

975

goto fallback;

879

976

}

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

}

977

free_plugin(proc);

893

978

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

894

979

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

895

980

NULL);

896

981

if(ret < 0){

897

982

perror("sigprocmask");

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;

983

exitstatus = EXIT_FAILURE;

984

goto fallback;

985

}

986

987

if(plugin_list == NULL){

988

break;

989

}

990

continue;

905

991

}

992

906

993

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

907

994

908

995

bool bret = print_out_password(proc->buffer,

913

1000

}

914

1001

goto fallback;

915

1002

}

1003

916

1004

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

917

1005

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

918

1006

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

948

1036

949

1037

fallback:

950

1038

951

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

1039

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

952

1040

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

953

1041

occured */

954

1042

bool bret;

955

1043

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

956

1044

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

957

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

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);

958

1052

if(not bret){

959

1053

perror("print_out_password");

960

1054

exitstatus = EXIT_FAILURE;

974

1068

}

975

1069

free(custom_argv);

976

1070

}

977

free_plugin_list(plugin_list);

978

1071

979

1072

if(dir != NULL){

980

1073

closedir(dir);

981

1074

}

982

1075

983

1076

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

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");

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

}

991

1085

}

992

free(process_list->buffer);

993

free(process_list);

994

1086

}

995

1087

996

1088

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

1001

1093

perror("wait");

1002

1094

}

1003

1095

1096

free_plugin_list();

1097

1004

1098

free(plugindir);

1005

1099

free(argfile);

1006

1100