/mandos/trunk : revision 104

65

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

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67

#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"

68

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

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

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

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75

struct plugin;

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typedef struct plugin{

78

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

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char **argv;

80

int argc;

81

char **environ;

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int envc;

83

bool disabled;

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85

/* Variables used for running processes*/

73

struct process;

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75

typedef struct process{

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pid_t pid;

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77

int fd;

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char *buffer;

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81

bool eof;

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volatile bool completed;

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volatile int status;

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struct process *next;

85

} process;

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typedef struct plugin{

88

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

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char **argv;

90

int argc;

91

char **environ;

92

int envc;

93

bool disabled;

94

struct plugin *next;

95

} plugin;

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static plugin *plugin_list = NULL;

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/* Gets a existing plugin based on name,

100

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

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static plugin *getplugin(char *name){

102

/* Check for exiting plugin with that name */

103

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

97

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

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

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if ((p->name == name)

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

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return p;

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return NULL;

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}

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}

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

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.argc = 1,

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.envc = 0,

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.disabled = false,

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.next = plugin_list };

121

.next = *plugin_list };

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

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if (new_plugin->argv == NULL){

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128

}

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new_plugin->argv[0] = copy_name;

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130

new_plugin->argv[1] = NULL;

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131

136

132

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

137

133

if(new_plugin->environ == NULL){

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134

free(copy_name);

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137

return NULL;

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}

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new_plugin->environ[0] = NULL;

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145

140

/* Append the new plugin to the list */

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plugin_list = new_plugin;

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*plugin_list = new_plugin;

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return new_plugin;

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143

}

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144

179

174

}

180

175

181

176

/* Add to a plugin's environment */

182

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

177

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

183

178

if(p == NULL){

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179

return false;

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180

}

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 */

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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));

194

if(new == NULL){

195

return false;

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}

197

*e = new;

198

strcpy(*e, def);

199

}

200

return true;

201

}

202

}

203

181

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

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182

}

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206

185

/*

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

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* Descriptor Flags".

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

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}

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process *process_list = NULL;

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

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status. */

225

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

226

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while(true){

227

plugin *proc = plugin_list;

207

process *proc = process_list;

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int status;

229

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

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if(pid == 0){

252

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}

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}

254

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255

/* Prints out a password to stdout */

256

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

257

236

ssize_t ret;

258

237

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

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return true;

269

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}

270

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

272

static void free_plugin(plugin *plugin_node){

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

275

free(*arg);

276

}

277

free(plugin_node->argv);

278

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

279

free(*env);

280

}

281

free(plugin_node->environ);

282

free(plugin_node->buffer);

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

285

if(plugin_node == plugin_list){

286

/* First one - simple */

287

plugin_list = plugin_list->next;

288

} else {

289

/* Second one or later */

290

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

291

if(p->next == plugin_node){

292

p->next = plugin_node->next;

293

break;

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}

250

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

251

if (argv == NULL){

252

*argc = 1;

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

254

if(argv == NULL){

255

return NULL;

295

256

}

296

}

297

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free(plugin_node);

257

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

258

parsing */

259

argv[1] = NULL;

260

}

261

*argc += 1;

262

argv = realloc(argv, sizeof(char *)

263

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

264

if(argv == NULL){

265

return NULL;

266

}

267

argv[*argc-1] = arg;

268

argv[*argc] = NULL;

269

return argv;

299

270

}

300

271

301

static void free_plugin_list(void){

302

while(plugin_list != NULL){

303

free_plugin(plugin_list);

272

static void free_plugin_list(plugin *plugin_list){

273

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

274

next = plugin_list->next;

275

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

276

free(*arg);

277

}

278

free(plugin_list->argv);

279

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

280

free(*env);

281

}

282

free(plugin_list->environ);

283

free(plugin_list);

304

284

}

305

285

}

306

286

307

287

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

308

char *plugindir = NULL;

309

char *argfile = NULL;

288

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

289

const char *argfile = ARGFILE;

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FILE *conffp;

311

291

size_t d_name_len;

312

292

DIR *dir = NULL;

344

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

345

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

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

347

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

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

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.arg = "VAR=value",

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

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

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

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

353

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

333

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

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.arg = "PLUGIN:ENV=value",

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335

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

356

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

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

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.arg = "DIRECTORY",

361

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

362

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

363

.arg = "FILE",

364

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

365

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

366

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

367

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

368

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

369

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

370

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

371

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

372

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

342

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

343

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

344

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

345

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

346

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

347

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

348

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

349

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

373

350

{ .name = NULL }

374

351

};

375

352

376

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

377

struct argp_state *state) {

353

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

378

354

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

379

355

pointer to our plugin list pointer. */

356

plugin **plugins = state->input;

380

357

switch (key) {

381

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

358

case 'g':

382

359

if (arg != NULL){

383

360

char *p;

384

361

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

385

362

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

386

363

continue;

387

364

}

388

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

365

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

389

366

perror("add_argument");

390

367

return ARGP_ERR_UNKNOWN;

391

368

}

392

369

}

393

370

}

394

371

break;

395

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

372

case 'e':

396

373

if(arg == NULL){

397

374

break;

398

375

}

401

378

if(envdef == NULL){

402

379

break;

403

380

}

404

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

381

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

405

382

perror("add_environment");

406

383

}

407

384

}

408

385

break;

409

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

386

case 'o':

410

387

if (arg != NULL){

411

388

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

412

389

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

422

399

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

423

400

continue;

424

401

}

425

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

402

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

426

403

perror("add_argument");

427

404

return ARGP_ERR_UNKNOWN;

428

405

}

430

407

}

431

408

}

432

409

break;

433

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

410

case 'f':

434

411

if(arg == NULL){

435

412

break;

436

413

}

444

421

break;

445

422

}

446

423

envdef++;

447

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

424

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

448

425

perror("add_environment");

449

426

}

450

427

}

451

428

break;

452

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

429

case 'd':

453

430

if (arg != NULL){

454

plugin *p = getplugin(arg);

431

plugin *p = getplugin(arg, plugins);

455

432

if(p == NULL){

456

433

return ARGP_ERR_UNKNOWN;

457

434

}

458

435

p->disabled = true;

459

436

}

460

437

break;

461

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

462

plugindir = strdup(arg);

463

if(plugindir == NULL){

464

perror("strdup");

465

}

438

case 128:

439

plugindir = arg;

466

440

break;

467

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

468

argfile = strdup(arg);

469

if(argfile == NULL){

470

perror("strdup");

471

}

472

break;

473

case 130: /* --userid */

441

case 129:

474

442

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

475

443

break;

476

case 131: /* --groupid */

444

case 130:

477

445

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

478

446

break;

479

case 132: /* --debug */

447

case 131:

480

448

debug = true;

481

449

break;

482

450

case ARGP_KEY_ARG:

490

458

return 0;

491

459

}

492

460

461

plugin *plugin_list = NULL;

462

493

463

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

494

.args_doc = "",

464

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

495

465

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

496

466

497

/* Open the configfile if available */

498

if (argfile == NULL){

499

conffp = fopen(AFILE, "r");

500

} else {

501

conffp = fopen(argfile, "r");

502

}

467

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

468

if (ret == ARGP_ERR_UNKNOWN){

469

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

470

exitstatus = EXIT_FAILURE;

471

goto fallback;

472

}

473

474

conffp = fopen(argfile, "r");

503

475

if(conffp != NULL){

504

476

char *org_line = NULL;

505

477

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

508

480

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

509

481

const char comment_delim[] = "#";

510

482

511

custom_argc = 1;

512

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

513

if(custom_argv == NULL){

514

perror("malloc");

515

exitstatus = EXIT_FAILURE;

516

goto fallback;

517

}

518

custom_argv[0] = argv[0];

519

custom_argv[1] = NULL;

520

521

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

522

commented text */

523

483

while(true){

524

484

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

525

485

if(sret == -1){

533

493

continue;

534

494

}

535

495

new_arg = strdup(p);

536

if(new_arg == NULL){

537

perror("strdup");

538

exitstatus = EXIT_FAILURE;

539

free(org_line);

540

goto fallback;

541

}

542

543

custom_argc += 1;

544

custom_argv = realloc(custom_argv, sizeof(char *)

545

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

546

if(custom_argv == NULL){

547

perror("realloc");

548

exitstatus = EXIT_FAILURE;

549

free(org_line);

550

goto fallback;

551

}

552

custom_argv[custom_argc-1] = new_arg;

553

custom_argv[custom_argc] = NULL;

496

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

497

if (custom_argv == NULL){

498

perror("add_to_argv");

499

exitstatus = EXIT_FAILURE;

500

goto fallback;

501

}

554

502

}

555

503

}

556

504

free(org_line);

557

} else {

505

} else{

558

506

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

559

507

not affect opening plugins */

560

508

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

563

511

goto fallback;

564

512

}

565

513

}

566

/* If there was any arguments from configuration file,

567

pass them to parser as command arguments */

514

568

515

if(custom_argv != NULL){

569

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

570

0, NULL);

516

custom_argv[0] = argv[0];

517

ret = argp_parse (&argp, custom_argc, custom_argv, 0, 0,

518

&plugin_list);

571

519

if (ret == ARGP_ERR_UNKNOWN){

572

520

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

573

521

exitstatus = EXIT_FAILURE;

575

523

}

576

524

}

577

525

578

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

579

config file */

580

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

581

if (ret == ARGP_ERR_UNKNOWN){

582

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

583

exitstatus = EXIT_FAILURE;

584

goto fallback;

585

}

586

587

526

if(debug){

588

527

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

589

528

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

598

537

}

599

538

}

600

539

601

/* Strip permissions down to nobody */

602

540

ret = setuid(uid);

603

541

if (ret == -1){

604

542

perror("setuid");

605

}

543

}

544

606

545

setgid(gid);

607

546

if (ret == -1){

608

547

perror("setgid");

609

548

}

610

549

611

if (plugindir == NULL){

612

dir = opendir(PDIR);

613

} else {

614

dir = opendir(plugindir);

615

}

616

550

dir = opendir(plugindir);

617

551

if(dir == NULL){

618

552

perror("Could not open plugin dir");

619

553

exitstatus = EXIT_FAILURE;

635

569

636

570

FD_ZERO(&rfds_all);

637

571

638

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

639

572

while(true){

640

573

dirst = readdir(dir);

641

574

642

/* All directory entries have been processed */

575

// All directory entries have been processed

643

576

if(dirst == NULL){

644

577

if (errno == EBADF){

645

578

perror("readdir");

651

584

652

585

d_name_len = strlen(dirst->d_name);

653

586

654

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

587

// Ignore dotfiles, backup files and other junk

655

588

{

656

589

bool bad_name = false;

657

590

672

605

break;

673

606

}

674

607

}

608

675

609

if(bad_name){

676

610

continue;

677

611

}

612

678

613

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

679

614

size_t suf_len = strlen(*suf);

680

615

if((d_name_len >= suf_len)

707

642

free(filename);

708

643

continue;

709

644

}

710

711

/* Ignore non-executable files */

645

712

646

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

713

647

if(debug){

714

648

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

717

651

free(filename);

718

652

continue;

719

653

}

720

721

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

654

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

722

655

if(p == NULL){

723

656

perror("getplugin");

724

657

free(filename);

734

667

}

735

668

{

736

669

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

737

plugin *g = getplugin(NULL);

670

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

738

671

if(g != NULL){

739

672

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

740

673

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

743

676

}

744

677

/* Add global environment variables */

745

678

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

746

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

679

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

747

680

perror("add_environment");

748

681

}

749

682

}

754

687

process, too. */

755

688

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

756

689

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

757

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

690

char *copy = strdup(*e);

691

if(copy == NULL){

692

perror("strdup");

693

continue;

694

}

695

if(not add_environment(p, copy)){

758

696

perror("add_environment");

759

697

}

760

698

}

767

705

exitstatus = EXIT_FAILURE;

768

706

goto fallback;

769

707

}

770

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

771

708

ret = set_cloexec_flag(pipefd[0]);

772

709

if(ret < 0){

773

710

perror("set_cloexec_flag");

787

724

exitstatus = EXIT_FAILURE;

788

725

goto fallback;

789

726

}

790

/* Starting a new process to be watched */

727

// Starting a new process to be watched

791

728

pid_t pid = fork();

792

729

if(pid == -1){

793

730

perror("fork");

831

768

}

832

769

/* no return */

833

770

}

834

/* Parent process */

835

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

771

/* parent process */

836

772

free(filename);

837

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

838

if (new_plugin == NULL){

839

perror("getplugin");

773

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

774

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

775

if (new_process == NULL){

776

perror("malloc");

840

777

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

841

778

if(ret < 0){

842

perror("sigprocmask");

779

perror("sigprocmask");

843

780

}

844

781

exitstatus = EXIT_FAILURE;

845

782

goto fallback;

846

783

}

847

784

848

new_plugin->pid = pid;

849

new_plugin->fd = pipefd[0];

850

785

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

786

.fd = pipefd[0],

787

.next = process_list };

788

// List handling

789

process_list = new_process;

851

790

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

852

791

has already completed */

853

792

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

857

796

goto fallback;

858

797

}

859

798

860

FD_SET(new_plugin->fd, &rfds_all);

799

FD_SET(new_process->fd, &rfds_all);

861

800

862

if (maxfd < new_plugin->fd){

863

maxfd = new_plugin->fd;

801

if (maxfd < new_process->fd){

802

maxfd = new_process->fd;

864

803

}

865

804

866

805

}

867

806

807

free_plugin_list(plugin_list);

808

plugin_list = NULL;

809

868

810

closedir(dir);

869

811

dir = NULL;

870

871

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

872

if(p->pid != 0){

873

break;

874

}

875

if(p->next == NULL){

876

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

877

" directory?\n");

878

free_plugin_list();

879

}

812

813

if (process_list == NULL){

814

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

815

" directory?\n");

816

process_list = NULL;

880

817

}

881

882

/* Main loop while running plugins exist */

883

while(plugin_list){

818

while(process_list){

884

819

fd_set rfds = rfds_all;

885

820

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

886

821

if (select_ret == -1){

890

825

}

891

826

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

892

827

from one of them */

893

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

828

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

894

829

/* Is this process completely done? */

895

830

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

896

831

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

897

832

if(not WIFEXITED(proc->status)

898

833

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

899

834

/* Bad exit by plugin */

900

901

835

if(debug){

902

836

if(WIFEXITED(proc->status)){

903

837

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

912

846

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

913

847

}

914

848

}

915

916

849

/* Remove the plugin */

917

850

FD_CLR(proc->fd, &rfds_all);

918

919

851

/* Block signal while modifying process_list */

920

852

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

921

853

if(ret < 0){

923

855

exitstatus = EXIT_FAILURE;

924

856

goto fallback;

925

857

}

926

free_plugin(proc);

858

/* Delete this process entry from the list */

859

if(process_list == proc){

860

/* First one - simple */

861

process_list = proc->next;

862

} else {

863

/* Second one or later */

864

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

865

if(p->next == proc){

866

p->next = proc->next;

867

break;

868

}

869

}

870

}

927

871

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

928

872

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

929

873

NULL);

930

874

if(ret < 0){

931

875

perror("sigprocmask");

932

exitstatus = EXIT_FAILURE;

933

goto fallback;

934

}

935

936

if(plugin_list == NULL){

937

break;

938

}

939

continue;

876

}

877

free(proc->buffer);

878

free(proc);

879

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

880

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

881

the process list */

882

break;

940

883

}

941

942

884

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

943

885

944

886

bool bret = print_out_password(proc->buffer,

949

891

}

950

892

goto fallback;

951

893

}

952

953

894

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

954

895

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

955

896

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

985

926

986

927

fallback:

987

928

988

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

929

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

989

930

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

990

931

occured */

991

932

bool bret;

1006

947

}

1007

948

1008

949

if(custom_argv != NULL){

1009

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

950

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

1010

951

free(*arg);

1011

952

}

1012

953

free(custom_argv);

1013

954

}

955

free_plugin_list(plugin_list);

1014

956

1015

957

if(dir != NULL){

1016

958

closedir(dir);

1017

959

}

1018

960

1019

961

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

1020

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

1021

if(p->pid != 0){

1022

close(p->fd);

1023

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

1024

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

1025

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

1026

perror("kill");

1027

}

962

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

963

next = process_list->next;

964

close(process_list->fd);

965

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

966

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

967

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

968

perror("kill");

1028

969

}

970

free(process_list->buffer);

971

free(process_list);

1029

972

}

1030

973

1031

974

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

1035

978

if(errno != ECHILD){

1036

979

perror("wait");

1037

980

}

1038

1039

free_plugin_list();

1040

1041

free(plugindir);

1042

free(argfile);

1043

981

1044

982

return exitstatus;

1045

983

}