/mandos/trunk : revision 24.1.78

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, error_t */

59

ARGP_KEY_END, ARGP_KEY_ARG,

60

error_t */

60

61

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

61

62

sigaddset(), sigaction(),

62

63

sigprocmask(), SIG_BLOCK, SIGCHLD,

64

65

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

65

66

67

#define BUFFER_SIZE 256

67

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

68

69

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

70

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

68

71

69

72

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

70

73

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

71

74

72

struct process;

73

74

typedef struct process{

75

pid_t pid;

76

int fd;

77

char *buffer;

78

size_t buffer_size;

79

size_t buffer_length;

80

bool eof;

81

bool completed;

82

int status;

83

struct process *next;

84

} process;

75

struct plugin;

85

76

86

77

typedef struct plugin{

87

78

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

90

81

char **environ;

91

82

int envc;

92

83

bool disabled;

84

85

/* Variables used for running processes*/

86

pid_t pid;

87

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;

93

94

struct plugin *next;

94

95

} plugin;

95

96

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

97

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

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){

98

104

if ((p->name == name)

99

105

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

100

106

return p;

112

118

return NULL;

113

119

}

114

120

}

115

121

116

122

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

117

123

.argc = 1,

118

.envc = 0,

119

124

.disabled = false,

120

.next = *plugin_list };

125

.next = plugin_list };

121

126

122

127

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

123

128

if (new_plugin->argv == NULL){

127

132

}

128

133

new_plugin->argv[0] = copy_name;

129

134

new_plugin->argv[1] = NULL;

130

135

131

136

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

132

137

if(new_plugin->environ == NULL){

133

138

free(copy_name);

136

141

return NULL;

137

142

}

138

143

new_plugin->environ[0] = NULL;

144

139

145

/* Append the new plugin to the list */

140

*plugin_list = new_plugin;

146

plugin_list = new_plugin;

141

147

return new_plugin;

142

148

}

143

149

177

183

if(p == NULL){

178

184

return false;

179

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

/* Refuse to add an existing variable */

192

return true;

193

}

194

}

180

195

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

181

196

}

182

197

183

184

198

/*

185

199

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

186

200

* Descriptor Flags".

197

211

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

198

212

}

199

213

200

process *process_list = NULL;

201

214

202

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

215

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

203

216

status. */

204

217

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

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;

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

}

221

245

}

222

246

247

/* Prints out a password to stdout */

223

248

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

224

249

ssize_t ret;

225

250

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

235

260

return true;

236

261

}

237

262

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;

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

}

244

287

}

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;

288

}

289

290

free(plugin_node);

257

291

}

258

292

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);

293

static void free_plugin_list(void){

294

while(plugin_list != NULL){

295

free_plugin(plugin_list);

271

296

}

272

297

}

273

298

274

299

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

275

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

276

const char *argfile = ARGFILE;

300

char *plugindir = NULL;

301

char *argfile = NULL;

277

302

FILE *conffp;

278

303

size_t d_name_len;

279

304

DIR *dir = NULL;

311

336

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

312

337

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

313

338

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

314

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

339

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

315

340

.arg = "VAR=value",

316

341

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

317

342

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

318

343

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

319

344

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

320

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

345

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

321

346

.arg = "PLUGIN:ENV=value",

322

347

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

323

348

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

326

351

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

327

352

.arg = "DIRECTORY",

328

353

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

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 },

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 },

337

365

{ .name = NULL }

338

366

};

339

367

340

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

368

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

369

struct argp_state *state) {

341

370

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

342

371

pointer to our plugin list pointer. */

343

plugin **plugins = state->input;

344

372

switch (key) {

345

case 'g':

373

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

346

374

if (arg != NULL){

347

375

char *p;

348

376

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

349

377

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

350

378

continue;

351

379

}

352

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

380

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

353

381

perror("add_argument");

354

382

return ARGP_ERR_UNKNOWN;

355

383

}

356

384

}

357

385

}

358

386

break;

359

case 'e':

387

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

360

388

if(arg == NULL){

361

389

break;

362

390

}

365

393

if(envdef == NULL){

366

394

break;

367

395

}

368

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

396

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

369

397

perror("add_environment");

370

398

}

371

399

}

372

400

break;

373

case 'o':

401

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

374

402

if (arg != NULL){

375

403

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

376

404

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

386

414

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

387

415

continue;

388

416

}

389

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

417

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

390

418

perror("add_argument");

391

419

return ARGP_ERR_UNKNOWN;

392

420

}

394

422

}

395

423

}

396

424

break;

397

case 'f':

425

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

398

426

if(arg == NULL){

399

427

break;

400

428

}

408

436

break;

409

437

}

410

438

envdef++;

411

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

439

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

412

440

perror("add_environment");

413

441

}

414

442

}

415

443

break;

416

case 'd':

444

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

417

445

if (arg != NULL){

418

plugin *p = getplugin(arg, plugins);

446

plugin *p = getplugin(arg);

419

447

if(p == NULL){

420

448

return ARGP_ERR_UNKNOWN;

421

449

}

422

450

p->disabled = true;

423

451

}

424

452

break;

425

case 128:

426

plugindir = arg;

453

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

454

plugindir = strdup(arg);

455

if(plugindir == NULL){

456

perror("strdup");

457

}

427

458

break;

428

case 129:

459

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

460

argfile = strdup(arg);

461

if(argfile == NULL){

462

perror("strdup");

463

}

464

break;

465

case 130: /* --userid */

429

466

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

430

467

break;

431

case 130:

468

case 131: /* --groupid */

432

469

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

433

470

break;

434

case 131:

471

case 132: /* --debug */

435

472

debug = true;

436

473

break;

437

474

case ARGP_KEY_ARG:

445

482

return 0;

446

483

}

447

484

448

plugin *plugin_list = NULL;

449

450

485

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

451

486

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

452

487

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

453

488

454

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

489

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

455

490

if (ret == ARGP_ERR_UNKNOWN){

456

491

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

457

492

exitstatus = EXIT_FAILURE;

458

493

goto fallback;

459

494

}

460

495

461

conffp = fopen(argfile, "r");

496

/* Opens the configfile if aviable */

497

if (argfile == NULL){

498

conffp = fopen(AFILE, "r");

499

} else {

500

conffp = fopen(argfile, "r");

501

}

462

502

if(conffp != NULL){

463

503

char *org_line = NULL;

464

504

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

467

507

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

468

508

const char comment_delim[] = "#";

469

509

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 */

470

522

while(true){

471

523

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

472

524

if(sret == -1){

480

532

continue;

481

533

}

482

534

new_arg = strdup(p);

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

}

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;

489

553

}

490

554

}

491

555

free(org_line);

498

562

goto fallback;

499

563

}

500

564

}

501

565

/* If there was any arguments from configuration file,

566

pass them to parser as command arguments */

502

567

if(custom_argv != NULL){

503

custom_argv[0] = argv[0];

504

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

568

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

505

569

if (ret == ARGP_ERR_UNKNOWN){

506

570

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

507

571

exitstatus = EXIT_FAILURE;

522

586

}

523

587

}

524

588

}

525

589

590

/* Strip permissions down to nobody */

526

591

ret = setuid(uid);

527

592

if (ret == -1){

528

593

perror("setuid");

529

}

530

594

}

531

595

setgid(gid);

532

596

if (ret == -1){

533

597

perror("setgid");

534

598

}

599

600

if (plugindir == NULL){

601

dir = opendir(PDIR);

602

} else {

603

dir = opendir(plugindir);

604

}

535

605

536

dir = opendir(plugindir);

537

606

if(dir == NULL){

538

607

perror("Could not open plugin dir");

539

608

exitstatus = EXIT_FAILURE;

554

623

}

555

624

556

625

FD_ZERO(&rfds_all);

557

626

627

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

558

628

while(true){

559

629

dirst = readdir(dir);

560

630

591

661

break;

592

662

}

593

663

}

594

595

664

if(bad_name){

596

665

continue;

597

666

}

598

599

667

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

600

668

size_t suf_len = strlen(*suf);

601

669

if((d_name_len >= suf_len)

628

696

free(filename);

629

697

continue;

630

698

}

631

699

700

/* Ignore non-executable files */

632

701

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

633

702

if(debug){

634

703

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

637

706

free(filename);

638

707

continue;

639

708

}

640

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

709

710

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

641

711

if(p == NULL){

642

712

perror("getplugin");

643

713

free(filename);

653

723

}

654

724

{

655

725

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

656

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

726

plugin *g = getplugin(NULL);

657

727

if(g != NULL){

658

728

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

659

729

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

691

761

exitstatus = EXIT_FAILURE;

692

762

goto fallback;

693

763

}

764

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

694

765

ret = set_cloexec_flag(pipefd[0]);

695

766

if(ret < 0){

696

767

perror("set_cloexec_flag");

754

825

}

755

826

/* no return */

756

827

}

757

/* parent process */

828

/* Parent process */

829

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

758

830

free(filename);

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");

831

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

832

if (new_plugin == NULL){

833

perror("getplugin");

763

834

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

764

835

if(ret < 0){

765

perror("sigprocmask");

836

perror("sigprocmask");

766

837

}

767

838

exitstatus = EXIT_FAILURE;

768

839

goto fallback;

769

840

}

770

841

771

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

772

.fd = pipefd[0],

773

.next = process_list };

774

// List handling

775

process_list = new_process;

842

new_plugin->pid = pid;

843

new_plugin->fd = pipefd[0];

844

776

845

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

777

846

has already completed */

778

847

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

782

851

goto fallback;

783

852

}

784

853

785

FD_SET(new_process->fd, &rfds_all);

854

FD_SET(new_plugin->fd, &rfds_all);

786

855

787

if (maxfd < new_process->fd){

788

maxfd = new_process->fd;

856

if (maxfd < new_plugin->fd){

857

maxfd = new_plugin->fd;

789

858

}

790

859

791

860

}

792

861

793

free_plugin_list(plugin_list);

794

plugin_list = NULL;

795

796

862

closedir(dir);

797

863

dir = NULL;

798

799

if (process_list == NULL){

800

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

801

" directory?\n");

802

process_list = 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

}

803

874

}

804

while(process_list){

875

876

/* Main loop while running plugins exist */

877

while(plugin_list){

805

878

fd_set rfds = rfds_all;

806

879

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

807

880

if (select_ret == -1){

811

884

}

812

885

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

813

886

from one of them */

814

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

887

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

815

888

/* Is this process completely done? */

816

889

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

817

890

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

818

891

if(not WIFEXITED(proc->status)

819

892

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

820

893

/* Bad exit by plugin */

894

821

895

if(debug){

822

896

if(WIFEXITED(proc->status)){

823

897

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

832

906

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

833

907

}

834

908

}

909

835

910

/* Remove the plugin */

836

911

FD_CLR(proc->fd, &rfds_all);

912

837

913

/* Block signal while modifying process_list */

838

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

914

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

839

915

if(ret < 0){

840

916

perror("sigprocmask");

841

917

exitstatus = EXIT_FAILURE;

842

918

goto fallback;

843

919

}

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

}

920

free_plugin(proc);

857

921

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

858

922

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

859

923

NULL);

860

924

if(ret < 0){

861

925

perror("sigprocmask");

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;

926

exitstatus = EXIT_FAILURE;

927

goto fallback;

928

}

929

930

if(plugin_list == NULL){

931

break;

932

}

933

continue;

869

934

}

935

870

936

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

871

937

872

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

938

bool bret = print_out_password(proc->buffer,

939

proc->buffer_length);

873

940

if(not bret){

874

941

perror("print_out_password");

875

942

exitstatus = EXIT_FAILURE;

876

943

}

877

944

goto fallback;

878

945

}

946

879

947

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

880

948

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

881

949

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

911

979

912

980

fallback:

913

981

914

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

915

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

982

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

983

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

984

occured */

916

985

bool bret;

917

986

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

918

987

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

931

1000

}

932

1001

933

1002

if(custom_argv != NULL){

934

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

1003

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

935

1004

free(*arg);

936

1005

}

937

1006

free(custom_argv);

938

1007

}

939

free_plugin_list(plugin_list);

940

1008

941

1009

if(dir != NULL){

942

1010

closedir(dir);

943

1011

}

944

1012

945

1013

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

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");

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

}

953

1022

}

954

free(process_list->buffer);

955

free(process_list);

956

1023

}

957

1024

958

1025

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

962

1029

if(errno != ECHILD){

963

1030

perror("wait");

964

1031

}

1032

1033

free_plugin_list();

1034

1035

free(plugindir);

1036

free(argfile);

965

1037

966

1038

return exitstatus;

967

1039

}