/mandos/trunk : revision 89

56

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

57

argp_state, struct argp,

58

argp_parse(), ARGP_ERR_UNKNOWN,

59

ARGP_KEY_END, ARGP_KEY_ARG,

60

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

67

66

#define BUFFER_SIZE 256

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69

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

70

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

67

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

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68

72

69

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

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70

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

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71

75

struct plugin;

72

struct process;

73

74

typedef struct process{

75

pid_t pid;

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int fd;

77

char *buffer;

78

size_t buffer_size;

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size_t buffer_length;

80

bool eof;

81

bool completed;

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int status;

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struct process *next;

84

} process;

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85

77

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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*/

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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

93

struct plugin *next;

95

94

} 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

98

if ((p->name == name)

105

99

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

106

100

return p;

111

105

if (new_plugin == NULL){

112

106

return NULL;

113

107

}

114

char *copy_name = NULL;

115

if(name != NULL){

116

copy_name = strdup(name);

117

if(copy_name == NULL){

118

return NULL;

119

}

108

char *copy_name = strdup(name);

109

if(copy_name == NULL){

110

return NULL;

120

111

}

121

112

122

113

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

123

114

.argc = 1,

115

.envc = 0,

124

116

.disabled = false,

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.next = plugin_list };

117

.next = *plugin_list };

126

118

127

119

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

128

120

if (new_plugin->argv == NULL){

129

free(copy_name);

130

121

free(new_plugin);

131

122

return NULL;

132

123

}

135

126

136

127

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

137

128

if(new_plugin->environ == NULL){

138

free(copy_name);

139

129

free(new_plugin->argv);

140

130

free(new_plugin);

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131

return NULL;

142

132

}

143

133

new_plugin->environ[0] = NULL;

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145

134

/* Append the new plugin to the list */

146

plugin_list = new_plugin;

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*plugin_list = new_plugin;

147

136

return new_plugin;

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137

}

149

138

186

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

187

176

}

188

177

178

189

179

/*

190

180

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

191

181

* Descriptor Flags".

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

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193

}

204

194

195

process *process_list = NULL;

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196

206

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

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

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198

status. */

208

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

209

while(true){

210

plugin *proc = plugin_list;

211

int status;

212

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

213

if(pid == 0){

214

/* Only still running child processes */

215

break;

216

}

217

if(pid == -1){

218

if (errno != ECHILD){

219

perror("waitpid");

220

}

221

/* No child processes */

222

break;

223

}

224

225

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

226

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

227

proc = proc->next;

228

}

229

if(proc == NULL){

230

/* Process not found in process list */

231

continue;

232

}

233

proc->status = status;

234

proc->completed = true;

235

}

200

process *proc = process_list;

201

int status;

202

pid_t pid = wait(&status);

203

if(pid == -1){

204

perror("wait");

205

return;

206

}

207

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

208

proc = proc->next;

209

}

210

if(proc == NULL){

211

/* Process not found in process list */

212

return;

213

}

214

proc->status = status;

215

proc->completed = true;

236

216

}

237

217

238

/* Prints out a password to stdout */

239

218

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

240

219

ssize_t ret;

241

220

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

251

230

return true;

252

231

}

253

232

254

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

255

static void free_plugin(plugin *plugin_node){

256

257

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

258

free(*arg);

259

}

260

free(plugin_node->argv);

261

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

262

free(*env);

263

}

264

free(plugin_node->environ);

265

free(plugin_node->buffer);

266

267

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

268

if(plugin_node == plugin_list){

269

/* First one - simple */

270

plugin_list = plugin_list->next;

271

} else {

272

/* Second one or later */

273

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

274

if(p->next == plugin_node){

275

p->next = plugin_node->next;

276

break;

277

}

233

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

234

if (argv == NULL){

235

*argc = 1;

236

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

237

if(argv == NULL){

238

return NULL;

278

239

}

279

}

280

281

free(plugin_node);

240

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

241

argv[1] = NULL;

242

}

243

*argc += 1;

244

argv = realloc(argv, sizeof(char *)

245

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

246

if(argv == NULL){

247

return NULL;

248

}

249

argv[*argc-1] = arg;

250

argv[*argc] = NULL;

251

return argv;

282

252

}

283

253

284

static void free_plugin_list(void){

285

while(plugin_list != NULL){

286

free_plugin(plugin_list);

287

}

254

static void free_plugin_list(plugin *plugin_list){

255

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

256

next = plugin_list->next;

257

free(plugin_list->name);

258

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

259

free(*arg);

260

}

261

free(plugin_list->argv);

262

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

263

free(*env);

264

}

265

free(plugin_list->environ);

266

free(plugin_list);

267

}

288

268

}

289

269

290

270

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

291

char *plugindir = NULL;

292

char *argfile = NULL;

271

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

272

const char *argfile = ARGFILE;

293

273

FILE *conffp;

294

274

size_t d_name_len;

295

275

DIR *dir = NULL;

318

298

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

319

299

if(ret == -1){

320

300

perror("sigaction");

321

exitstatus = EXIT_FAILURE;

301

exitstatus = EXIT_FAILURE;

322

302

goto fallback;

323

303

}

324

304

342

322

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

343

323

.arg = "DIRECTORY",

344

324

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

345

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

346

.arg = "FILE",

347

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

348

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

349

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

350

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

351

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

352

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

353

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

354

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

355

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

325

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

326

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

327

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

328

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

329

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

330

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

331

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

332

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

356

333

{ .name = NULL }

357

334

};

358

335

359

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

360

struct argp_state *state) {

336

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

361

337

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

362

338

pointer to our plugin list pointer. */

339

plugin **plugins = state->input;

363

340

switch (key) {

364

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

341

case 'g':

365

342

if (arg != NULL){

366

343

char *p;

367

344

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

368

345

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

369

346

continue;

370

347

}

371

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

348

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

372

349

perror("add_argument");

373

350

return ARGP_ERR_UNKNOWN;

374

351

}

375

352

}

376

353

}

377

354

break;

378

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

355

case 'e':

379

356

if(arg == NULL){

380

357

break;

381

358

}

384

361

if(envdef == NULL){

385

362

break;

386

363

}

387

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

364

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

388

365

perror("add_environment");

389

366

}

390

367

}

391

368

break;

392

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

369

case 'o':

393

370

if (arg != NULL){

394

371

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

395

372

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

405

382

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

406

383

continue;

407

384

}

408

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

385

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

409

386

perror("add_argument");

410

387

return ARGP_ERR_UNKNOWN;

411

388

}

413

390

}

414

391

}

415

392

break;

416

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

393

case 'f':

417

394

if(arg == NULL){

418

395

break;

419

396

}

427

404

break;

428

405

}

429

406

envdef++;

430

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

407

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

431

408

perror("add_environment");

432

409

}

433

410

}

434

411

break;

435

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

412

case 'd':

436

413

if (arg != NULL){

437

plugin *p = getplugin(arg);

414

plugin *p = getplugin(arg, plugins);

438

415

if(p == NULL){

439

416

return ARGP_ERR_UNKNOWN;

440

417

}

441

418

p->disabled = true;

442

419

}

443

420

break;

444

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

445

plugindir = strdup(arg);

446

if(plugindir == NULL){

447

perror("strdup");

448

}

421

case 128:

422

plugindir = arg;

449

423

break;

450

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

451

argfile = strdup(arg);

452

if(argfile == NULL){

453

perror("strdup");

454

}

455

break;

456

case 130: /* --userid */

424

case 129:

457

425

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

458

426

break;

459

case 131: /* --groupid */

427

case 130:

460

428

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

461

429

break;

462

case 132: /* --debug */

430

case 131:

463

431

debug = true;

464

432

break;

465

433

case ARGP_KEY_ARG:

473

441

return 0;

474

442

}

475

443

444

plugin *plugin_list = NULL;

445

476

446

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

477

447

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

478

448

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

479

449

480

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

450

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

481

451

if (ret == ARGP_ERR_UNKNOWN){

482

452

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

483

453

exitstatus = EXIT_FAILURE;

484

454

goto fallback;

485

455

}

486

456

487

/* Opens the configfile if aviable */

488

if (argfile == NULL){

489

conffp = fopen(AFILE, "r");

490

} else {

491

conffp = fopen(argfile, "r");

492

}

457

conffp = fopen(argfile, "r");

493

458

if(conffp != NULL){

494

459

char *org_line = NULL;

495

460

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

498

463

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

499

464

const char comment_delim[] = "#";

500

465

501

custom_argc = 1;

502

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

503

if(custom_argv == NULL){

504

perror("malloc");

505

exitstatus = EXIT_FAILURE;

506

goto fallback;

507

}

508

custom_argv[0] = argv[0];

509

custom_argv[1] = NULL;

510

511

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

512

commented text */

513

466

while(true){

514

467

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

515

468

if(sret == -1){

523

476

continue;

524

477

}

525

478

new_arg = strdup(p);

526

if(new_arg == NULL){

527

perror("strdup");

528

exitstatus = EXIT_FAILURE;

529

free(org_line);

530

goto fallback;

531

}

532

533

custom_argc += 1;

534

custom_argv = realloc(custom_argv, sizeof(char *)

535

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

536

if(custom_argv == NULL){

537

perror("realloc");

538

exitstatus = EXIT_FAILURE;

539

free(org_line);

540

goto fallback;

541

}

542

custom_argv[custom_argc-1] = new_arg;

543

custom_argv[custom_argc] = NULL;

479

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

480

if (custom_argv == NULL){

481

perror("add_to_argv");

482

exitstatus = EXIT_FAILURE;

483

goto fallback;

484

}

544

485

}

545

486

}

546

487

free(org_line);

553

494

goto fallback;

554

495

}

555

496

}

556

/* If there was any arguments from configuration file,

557

pass them to parser as command arguments */

497

558

498

if(custom_argv != NULL){

559

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

499

custom_argv[0] = argv[0];

500

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

560

501

if (ret == ARGP_ERR_UNKNOWN){

561

502

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

562

503

exitstatus = EXIT_FAILURE;

577

518

}

578

519

}

579

520

}

580

581

/* Strip permissions down to nobody */

521

582

522

ret = setuid(uid);

583

523

if (ret == -1){

584

524

perror("setuid");

585

}

525

}

526

586

527

setgid(gid);

587

528

if (ret == -1){

588

529

perror("setgid");

589

530

}

590

591

if (plugindir == NULL){

592

dir = opendir(PDIR);

593

} else {

594

dir = opendir(plugindir);

595

}

596

531

532

dir = opendir(plugindir);

597

533

if(dir == NULL){

598

534

perror("Could not open plugin dir");

599

535

exitstatus = EXIT_FAILURE;

614

550

}

615

551

616

552

FD_ZERO(&rfds_all);

617

618

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

553

619

554

while(true){

620

555

dirst = readdir(dir);

621

556

652

587

break;

653

588

}

654

589

}

590

655

591

if(bad_name){

656

592

continue;

657

593

}

594

658

595

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

659

596

size_t suf_len = strlen(*suf);

660

597

if((d_name_len >= suf_len)

687

624

free(filename);

688

625

continue;

689

626

}

690

691

/* Ignore non-executable files */

627

692

628

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

693

629

if(debug){

694

630

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

697

633

free(filename);

698

634

continue;

699

635

}

700

701

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

636

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

702

637

if(p == NULL){

703

638

perror("getplugin");

704

639

free(filename);

714

649

}

715

650

{

716

651

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

717

plugin *g = getplugin(NULL);

652

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

718

653

if(g != NULL){

719

654

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

720

655

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

745

680

}

746

681

}

747

682

748

int pipefd[2];

683

int pipefd[2];

749

684

ret = pipe(pipefd);

750

685

if (ret == -1){

751

686

perror("pipe");

752

687

exitstatus = EXIT_FAILURE;

753

688

goto fallback;

754

689

}

755

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

756

690

ret = set_cloexec_flag(pipefd[0]);

757

691

if(ret < 0){

758

692

perror("set_cloexec_flag");

816

750

}

817

751

/* no return */

818

752

}

819

/* Parent process */

820

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

753

/* parent process */

821

754

free(filename);

822

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

823

if (new_plugin == NULL){

824

perror("getplugin");

755

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

756

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

757

if (new_process == NULL){

758

perror("malloc");

825

759

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

826

760

if(ret < 0){

827

perror("sigprocmask");

761

perror("sigprocmask");

828

762

}

829

763

exitstatus = EXIT_FAILURE;

830

764

goto fallback;

831

765

}

832

766

833

new_plugin->pid = pid;

834

new_plugin->fd = pipefd[0];

835

767

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

768

.fd = pipefd[0],

769

.next = process_list };

770

// List handling

771

process_list = new_process;

836

772

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

837

773

has already completed */

838

774

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

842

778

goto fallback;

843

779

}

844

780

845

FD_SET(new_plugin->fd, &rfds_all);

781

FD_SET(new_process->fd, &rfds_all);

846

782

847

if (maxfd < new_plugin->fd){

848

maxfd = new_plugin->fd;

783

if (maxfd < new_process->fd){

784

maxfd = new_process->fd;

849

785

}

850

786

851

787

}

852

788

789

free_plugin_list(plugin_list);

790

853

791

closedir(dir);

854

792

dir = NULL;

855

856

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

857

if(p->pid != 0){

858

break;

859

}

860

if(p->next == NULL){

861

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

862

" directory?\n");

863

free_plugin_list();

864

}

793

794

if (process_list == NULL){

795

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

796

" directory?\n");

797

process_list = NULL;

865

798

}

866

867

/* Main loop while running plugins exist */

868

while(plugin_list){

799

while(process_list){

869

800

fd_set rfds = rfds_all;

870

801

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

871

802

if (select_ret == -1){

875

806

}

876

807

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

877

808

from one of them */

878

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

809

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

879

810

/* Is this process completely done? */

880

811

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

881

812

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

882

813

if(not WIFEXITED(proc->status)

883

814

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

884

815

/* Bad exit by plugin */

885

886

816

if(debug){

887

817

if(WIFEXITED(proc->status)){

888

818

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

897

827

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

898

828

}

899

829

}

900

901

830

/* Remove the plugin */

902

831

FD_CLR(proc->fd, &rfds_all);

903

904

832

/* Block signal while modifying process_list */

905

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

833

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

906

834

if(ret < 0){

907

835

perror("sigprocmask");

908

836

exitstatus = EXIT_FAILURE;

909

837

goto fallback;

910

838

}

911

free_plugin(proc);

839

/* Delete this process entry from the list */

840

if(process_list == proc){

841

/* First one - simple */

842

process_list = proc->next;

843

} else {

844

/* Second one or later */

845

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

846

if(p->next == proc){

847

p->next = proc->next;

848

break;

849

}

850

}

851

}

912

852

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

913

853

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

914

854

NULL);

915

855

if(ret < 0){

916

856

perror("sigprocmask");

917

exitstatus = EXIT_FAILURE;

918

goto fallback;

919

}

920

921

if(plugin_list == NULL){

922

break;

923

}

924

continue;

857

}

858

free(proc->buffer);

859

free(proc);

860

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

861

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

862

the process list */

863

break;

925

864

}

926

927

865

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

928

866

929

bool bret = print_out_password(proc->buffer,

930

proc->buffer_length);

867

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

931

868

if(not bret){

932

869

perror("print_out_password");

933

870

exitstatus = EXIT_FAILURE;

934

871

}

935

872

goto fallback;

936

873

}

937

938

874

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

939

875

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

940

876

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

970

906

971

907

fallback:

972

908

973

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

974

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

975

occured */

909

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

910

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

976

911

bool bret;

977

912

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

978

913

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

991

926

}

992

927

993

928

if(custom_argv != NULL){

994

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

929

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

995

930

free(*arg);

996

931

}

997

932

free(custom_argv);

998

933

}

934

free_plugin_list(plugin_list);

999

935

1000

936

if(dir != NULL){

1001

937

closedir(dir);

1002

938

}

1003

939

1004

940

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

1005

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

1006

if(p->pid != 0){

1007

close(p->fd);

1008

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

1009

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

1010

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

1011

perror("kill");

1012

}

941

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

942

next = process_list->next;

943

close(process_list->fd);

944

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

945

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

946

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

947

perror("kill");

1013

948

}

949

free(process_list->buffer);

950

free(process_list);

1014

951

}

1015

952

1016

953

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

1020

957

if(errno != ECHILD){

1021

958

perror("wait");

1022

959

}

1023

1024

free_plugin_list();

1025

1026

free(plugindir);

1027

free(argfile);

1028

960

1029

961

return exitstatus;

1030

962

}