/mandos/release : revision 99

56

#include <argp.h> /* struct argp_option, struct

57

argp_state, struct argp,

58

argp_parse(), ARGP_ERR_UNKNOWN,

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ARGP_KEY_END, ARGP_KEY_ARG,

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error_t */

59

ARGP_KEY_END, ARGP_KEY_ARG, error_t */

61

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#include <signal.h> /* struct sigaction, sigemptyset(),

62

61

sigaddset(), sigaction(),

63

62

sigprocmask(), SIG_BLOCK, SIGCHLD,

65

64

#include <errno.h> /* errno, EBADF */

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65

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66

#define BUFFER_SIZE 256

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69

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

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

67

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

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72

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

73

70

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

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71

75

struct plugin;

72

struct process;

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74

typedef struct process{

75

pid_t pid;

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int fd;

77

char *buffer;

78

size_t buffer_size;

79

size_t buffer_length;

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bool eof;

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bool completed;

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int status;

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struct process *next;

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} process;

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typedef struct plugin{

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

81

90

char **environ;

82

91

int envc;

83

92

bool disabled;

84

85

/* Variables used for running processes*/

86

pid_t pid;

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int fd;

88

char *buffer;

89

size_t buffer_size;

90

size_t buffer_length;

91

bool eof;

92

volatile bool completed;

93

volatile int status;

94

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struct plugin *next;

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} plugin;

96

95

97

static plugin *plugin_list = NULL;

98

99

/* Gets a 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){

96

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

97

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

104

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if ((p->name == name)

105

99

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

106

100

return p;

118

112

return NULL;

119

113

}

120

114

}

121

115

122

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

123

117

.argc = 1,

118

.envc = 0,

124

119

.disabled = false,

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.next = plugin_list };

120

.next = *plugin_list };

126

121

127

122

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

128

123

if (new_plugin->argv == NULL){

132

127

}

133

128

new_plugin->argv[0] = copy_name;

134

129

new_plugin->argv[1] = NULL;

135

130

136

131

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

137

132

if(new_plugin->environ == NULL){

138

133

free(copy_name);

141

136

return NULL;

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137

}

143

138

new_plugin->environ[0] = NULL;

144

145

139

/* Append the new plugin to the list */

146

plugin_list = new_plugin;

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*plugin_list = new_plugin;

147

141

return new_plugin;

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142

}

149

143

183

177

if(p == NULL){

184

178

return false;

185

179

}

186

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

187

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

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/* Search for this environment variable */

189

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

190

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

191

/* Refuse to add an existing variable */

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return true;

193

}

194

}

195

180

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

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181

}

197

182

183

198

184

/*

199

185

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

200

186

* Descriptor Flags".

211

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

212

198

}

213

199

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process *process_list = NULL;

214

201

215

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

202

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

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status. */

217

204

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

218

while(true){

219

plugin *proc = plugin_list;

220

int status;

221

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

222

if(pid == 0){

223

/* Only still running child processes */

224

break;

225

}

226

if(pid == -1){

227

if (errno != ECHILD){

228

perror("waitpid");

229

}

230

/* No child processes */

231

break;

232

}

233

234

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

235

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

236

proc = proc->next;

237

}

238

if(proc == NULL){

239

/* Process not found in process list */

240

continue;

241

}

242

proc->status = status;

243

proc->completed = true;

244

}

205

process *proc = process_list;

206

int status;

207

pid_t pid = wait(&status);

208

if(pid == -1){

209

perror("wait");

210

return;

211

}

212

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

213

proc = proc->next;

214

}

215

if(proc == NULL){

216

/* Process not found in process list */

217

return;

218

}

219

proc->status = status;

220

proc->completed = true;

245

221

}

246

222

247

/* Prints out a password to stdout */

248

223

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

249

224

ssize_t ret;

250

225

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

260

235

return true;

261

236

}

262

237

263

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

264

static void free_plugin(plugin *plugin_node){

265

266

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

267

free(*arg);

268

}

269

free(plugin_node->argv);

270

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

271

free(*env);

272

}

273

free(plugin_node->environ);

274

free(plugin_node->buffer);

275

276

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

277

if(plugin_node == plugin_list){

278

/* First one - simple */

279

plugin_list = plugin_list->next;

280

} else {

281

/* Second one or later */

282

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

283

if(p->next == plugin_node){

284

p->next = plugin_node->next;

285

break;

286

}

238

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

239

if (argv == NULL){

240

*argc = 1;

241

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

242

if(argv == NULL){

243

return NULL;

287

244

}

288

}

289

290

free(plugin_node);

245

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

246

argv[1] = NULL;

247

}

248

*argc += 1;

249

argv = realloc(argv, sizeof(char *)

250

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

251

if(argv == NULL){

252

return NULL;

253

}

254

argv[*argc-1] = arg;

255

argv[*argc] = NULL;

256

return argv;

291

257

}

292

258

293

static void free_plugin_list(void){

294

while(plugin_list != NULL){

295

free_plugin(plugin_list);

259

static void free_plugin_list(plugin *plugin_list){

260

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

261

next = plugin_list->next;

262

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

263

free(*arg);

264

}

265

free(plugin_list->argv);

266

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

267

free(*env);

268

}

269

free(plugin_list->environ);

270

free(plugin_list);

296

271

}

297

272

}

298

273

299

274

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

300

char *plugindir = NULL;

301

char *argfile = NULL;

275

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

276

const char *argfile = ARGFILE;

302

277

FILE *conffp;

303

278

size_t d_name_len;

304

279

DIR *dir = NULL;

336

311

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

337

312

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

338

313

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

339

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

314

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

340

315

.arg = "VAR=value",

341

316

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

342

317

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

343

318

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

344

319

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

345

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

320

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

346

321

.arg = "PLUGIN:ENV=value",

347

322

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

348

323

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

351

326

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

352

327

.arg = "DIRECTORY",

353

328

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

354

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

355

.arg = "FILE",

356

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

357

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

358

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

359

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

360

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

361

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

362

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

363

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

364

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

329

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

330

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

331

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

332

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

333

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

334

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

335

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

336

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

365

337

{ .name = NULL }

366

338

};

367

339

368

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

369

struct argp_state *state) {

340

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

370

341

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

371

342

pointer to our plugin list pointer. */

343

plugin **plugins = state->input;

372

344

switch (key) {

373

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

345

case 'g':

374

346

if (arg != NULL){

375

347

char *p;

376

348

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

377

349

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

378

350

continue;

379

351

}

380

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

352

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

381

353

perror("add_argument");

382

354

return ARGP_ERR_UNKNOWN;

383

355

}

384

356

}

385

357

}

386

358

break;

387

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

359

case 'e':

388

360

if(arg == NULL){

389

361

break;

390

362

}

393

365

if(envdef == NULL){

394

366

break;

395

367

}

396

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

368

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

397

369

perror("add_environment");

398

370

}

399

371

}

400

372

break;

401

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

373

case 'o':

402

374

if (arg != NULL){

403

375

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

404

376

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

414

386

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

415

387

continue;

416

388

}

417

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

389

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

418

390

perror("add_argument");

419

391

return ARGP_ERR_UNKNOWN;

420

392

}

422

394

}

423

395

}

424

396

break;

425

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

397

case 'f':

426

398

if(arg == NULL){

427

399

break;

428

400

}

436

408

break;

437

409

}

438

410

envdef++;

439

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

411

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

440

412

perror("add_environment");

441

413

}

442

414

}

443

415

break;

444

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

416

case 'd':

445

417

if (arg != NULL){

446

plugin *p = getplugin(arg);

418

plugin *p = getplugin(arg, plugins);

447

419

if(p == NULL){

448

420

return ARGP_ERR_UNKNOWN;

449

421

}

450

422

p->disabled = true;

451

423

}

452

424

break;

453

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

454

plugindir = strdup(arg);

455

if(plugindir == NULL){

456

perror("strdup");

457

}

425

case 128:

426

plugindir = arg;

458

427

break;

459

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

460

argfile = strdup(arg);

461

if(argfile == NULL){

462

perror("strdup");

463

}

464

break;

465

case 130: /* --userid */

428

case 129:

466

429

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

467

430

break;

468

case 131: /* --groupid */

431

case 130:

469

432

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

470

433

break;

471

case 132: /* --debug */

434

case 131:

472

435

debug = true;

473

436

break;

474

437

case ARGP_KEY_ARG:

482

445

return 0;

483

446

}

484

447

448

plugin *plugin_list = NULL;

449

485

450

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

486

451

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

487

452

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

488

453

489

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

454

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

490

455

if (ret == ARGP_ERR_UNKNOWN){

491

456

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

492

457

exitstatus = EXIT_FAILURE;

493

458

goto fallback;

494

459

}

495

460

496

/* Opens the configfile if aviable */

497

if (argfile == NULL){

498

conffp = fopen(AFILE, "r");

499

} else {

500

conffp = fopen(argfile, "r");

501

}

461

conffp = fopen(argfile, "r");

502

462

if(conffp != NULL){

503

463

char *org_line = NULL;

504

464

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

507

467

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

508

468

const char comment_delim[] = "#";

509

469

510

custom_argc = 1;

511

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

512

if(custom_argv == NULL){

513

perror("malloc");

514

exitstatus = EXIT_FAILURE;

515

goto fallback;

516

}

517

custom_argv[0] = argv[0];

518

custom_argv[1] = NULL;

519

520

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

521

commented text */

522

470

while(true){

523

471

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

524

472

if(sret == -1){

532

480

continue;

533

481

}

534

482

new_arg = strdup(p);

535

if(new_arg == NULL){

536

perror("strdup");

537

exitstatus = EXIT_FAILURE;

538

free(org_line);

539

goto fallback;

540

}

541

542

custom_argc += 1;

543

custom_argv = realloc(custom_argv, sizeof(char *)

544

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

545

if(custom_argv == NULL){

546

perror("realloc");

547

exitstatus = EXIT_FAILURE;

548

free(org_line);

549

goto fallback;

550

}

551

custom_argv[custom_argc-1] = new_arg;

552

custom_argv[custom_argc] = NULL;

483

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

484

if (custom_argv == NULL){

485

perror("add_to_argv");

486

exitstatus = EXIT_FAILURE;

487

goto fallback;

488

}

553

489

}

554

490

}

555

491

free(org_line);

562

498

goto fallback;

563

499

}

564

500

}

565

/* If there was any arguments from configuration file,

566

pass them to parser as command arguments */

501

567

502

if(custom_argv != NULL){

568

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

503

custom_argv[0] = argv[0];

504

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

569

505

if (ret == ARGP_ERR_UNKNOWN){

570

506

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

571

507

exitstatus = EXIT_FAILURE;

586

522

}

587

523

}

588

524

}

589

590

/* Strip permissions down to nobody */

525

591

526

ret = setuid(uid);

592

527

if (ret == -1){

593

528

perror("setuid");

594

}

529

}

530

595

531

setgid(gid);

596

532

if (ret == -1){

597

533

perror("setgid");

598

534

}

599

600

if (plugindir == NULL){

601

dir = opendir(PDIR);

602

} else {

603

dir = opendir(plugindir);

604

}

605

535

536

dir = opendir(plugindir);

606

537

if(dir == NULL){

607

538

perror("Could not open plugin dir");

608

539

exitstatus = EXIT_FAILURE;

623

554

}

624

555

625

556

FD_ZERO(&rfds_all);

626

627

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

557

628

558

while(true){

629

559

dirst = readdir(dir);

630

560

661

591

break;

662

592

}

663

593

}

594

664

595

if(bad_name){

665

596

continue;

666

597

}

598

667

599

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

668

600

size_t suf_len = strlen(*suf);

669

601

if((d_name_len >= suf_len)

696

628

free(filename);

697

629

continue;

698

630

}

699

700

/* Ignore non-executable files */

631

701

632

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

702

633

if(debug){

703

634

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

706

637

free(filename);

707

638

continue;

708

639

}

709

710

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

640

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

711

641

if(p == NULL){

712

642

perror("getplugin");

713

643

free(filename);

723

653

}

724

654

{

725

655

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

726

plugin *g = getplugin(NULL);

656

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

727

657

if(g != NULL){

728

658

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

729

659

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

761

691

exitstatus = EXIT_FAILURE;

762

692

goto fallback;

763

693

}

764

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

765

694

ret = set_cloexec_flag(pipefd[0]);

766

695

if(ret < 0){

767

696

perror("set_cloexec_flag");

825

754

}

826

755

/* no return */

827

756

}

828

/* Parent process */

829

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

757

/* parent process */

830

758

free(filename);

831

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

832

if (new_plugin == NULL){

833

perror("getplugin");

759

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

760

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

761

if (new_process == NULL){

762

perror("malloc");

834

763

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

835

764

if(ret < 0){

836

perror("sigprocmask");

765

perror("sigprocmask");

837

766

}

838

767

exitstatus = EXIT_FAILURE;

839

768

goto fallback;

840

769

}

841

770

842

new_plugin->pid = pid;

843

new_plugin->fd = pipefd[0];

844

771

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

772

.fd = pipefd[0],

773

.next = process_list };

774

// List handling

775

process_list = new_process;

845

776

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

846

777

has already completed */

847

778

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

851

782

goto fallback;

852

783

}

853

784

854

FD_SET(new_plugin->fd, &rfds_all);

785

FD_SET(new_process->fd, &rfds_all);

855

786

856

if (maxfd < new_plugin->fd){

857

maxfd = new_plugin->fd;

787

if (maxfd < new_process->fd){

788

maxfd = new_process->fd;

858

789

}

859

790

860

791

}

861

792

793

free_plugin_list(plugin_list);

794

plugin_list = NULL;

795

862

796

closedir(dir);

863

797

dir = NULL;

864

865

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

866

if(p->pid != 0){

867

break;

868

}

869

if(p->next == NULL){

870

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

871

" directory?\n");

872

free_plugin_list();

873

}

798

799

if (process_list == NULL){

800

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

801

" directory?\n");

802

process_list = NULL;

874

803

}

875

876

/* Main loop while running plugins exist */

877

while(plugin_list){

804

while(process_list){

878

805

fd_set rfds = rfds_all;

879

806

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

880

807

if (select_ret == -1){

884

811

}

885

812

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

886

813

from one of them */

887

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

814

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

888

815

/* Is this process completely done? */

889

816

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

890

817

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

891

818

if(not WIFEXITED(proc->status)

892

819

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

893

820

/* Bad exit by plugin */

894

895

821

if(debug){

896

822

if(WIFEXITED(proc->status)){

897

823

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

906

832

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

907

833

}

908

834

}

909

910

835

/* Remove the plugin */

911

836

FD_CLR(proc->fd, &rfds_all);

912

913

837

/* Block signal while modifying process_list */

914

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

838

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

915

839

if(ret < 0){

916

840

perror("sigprocmask");

917

841

exitstatus = EXIT_FAILURE;

918

842

goto fallback;

919

843

}

920

free_plugin(proc);

844

/* Delete this process entry from the list */

845

if(process_list == proc){

846

/* First one - simple */

847

process_list = proc->next;

848

} else {

849

/* Second one or later */

850

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

851

if(p->next == proc){

852

p->next = proc->next;

853

break;

854

}

855

}

856

}

921

857

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

922

858

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

923

859

NULL);

924

860

if(ret < 0){

925

861

perror("sigprocmask");

926

exitstatus = EXIT_FAILURE;

927

goto fallback;

928

}

929

930

if(plugin_list == NULL){

931

break;

932

}

933

continue;

862

}

863

free(proc->buffer);

864

free(proc);

865

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

866

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

867

the process list */

868

break;

934

869

}

935

936

870

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

937

871

938

bool bret = print_out_password(proc->buffer,

939

proc->buffer_length);

872

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

940

873

if(not bret){

941

874

perror("print_out_password");

942

875

exitstatus = EXIT_FAILURE;

943

876

}

944

877

goto fallback;

945

878

}

946

947

879

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

948

880

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

949

881

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

979

911

980

912

fallback:

981

913

982

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

983

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

984

occured */

914

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

915

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

985

916

bool bret;

986

917

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

987

918

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

1000

931

}

1001

932

1002

933

if(custom_argv != NULL){

1003

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

934

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

1004

935

free(*arg);

1005

936

}

1006

937

free(custom_argv);

1007

938

}

939

free_plugin_list(plugin_list);

1008

940

1009

941

if(dir != NULL){

1010

942

closedir(dir);

1011

943

}

1012

944

1013

945

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

1014

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

1015

if(p->pid != 0){

1016

close(p->fd);

1017

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

1018

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

1019

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

1020

perror("kill");

1021

}

946

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

947

next = process_list->next;

948

close(process_list->fd);

949

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

950

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

951

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

952

perror("kill");

1022

953

}

954

free(process_list->buffer);

955

free(process_list);

1023

956

}

1024

957

1025

958

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

1029

962

if(errno != ECHILD){

1030

963

perror("wait");

1031

964

}

1032

1033

free_plugin_list();

1034

1035

free(plugindir);

1036

free(argfile);

1037

965

1038

966

return exitstatus;

1039

967

}