/mandos/trunk : revision 135

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, 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

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

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

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71

69

72

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

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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;

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bool completed;

82

int status;

83

struct process *next;

84

} process;

75

struct plugin;

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76

86

77

typedef struct plugin{

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

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81

char **environ;

91

82

int envc;

92

83

bool disabled;

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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;

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volatile bool completed;

93

volatile int status;

93

94

struct plugin *next;

94

95

} plugin;

95

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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;

105

111

if (new_plugin == NULL){

106

112

return NULL;

107

113

}

108

char *copy_name = strdup(name);

109

if(copy_name == NULL){

110

return NULL;

114

char *copy_name = NULL;

115

if(name != NULL){

116

copy_name = strdup(name);

117

if(copy_name == NULL){

118

return NULL;

119

}

111

120

}

112

121

113

122

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

114

123

.argc = 1,

115

.envc = 0,

116

124

.disabled = false,

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.next = *plugin_list };

125

.next = plugin_list };

118

126

119

127

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

120

128

if (new_plugin->argv == NULL){

129

free(copy_name);

121

130

free(new_plugin);

122

131

return NULL;

123

132

}

124

133

new_plugin->argv[0] = copy_name;

125

134

new_plugin->argv[1] = NULL;

126

135

127

136

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

128

137

if(new_plugin->environ == NULL){

138

free(copy_name);

129

139

free(new_plugin->argv);

130

140

free(new_plugin);

131

141

return NULL;

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142

}

133

143

new_plugin->environ[0] = NULL;

144

134

145

/* Append the new plugin to the list */

135

*plugin_list = new_plugin;

146

plugin_list = new_plugin;

136

147

return new_plugin;

137

148

}

138

149

172

183

if(p == NULL){

173

184

return false;

174

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

}

175

195

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

176

196

}

177

197

178

179

198

/*

180

199

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

181

200

* Descriptor Flags".

192

211

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

193

212

}

194

213

195

process *process_list = NULL;

196

214

197

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

215

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

198

216

status. */

199

217

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

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;

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

}

216

245

}

217

246

247

/* Prints out a password to stdout */

218

248

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

219

249

ssize_t ret;

220

250

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

230

260

return true;

231

261

}

232

262

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;

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

}

239

287

}

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;

288

}

289

290

free(plugin_node);

252

291

}

253

292

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

}

293

static void free_plugin_list(void){

294

while(plugin_list != NULL){

295

free_plugin(plugin_list);

296

}

268

297

}

269

298

270

299

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

271

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

272

const char *argfile = ARGFILE;

300

char *plugindir = NULL;

301

char *argfile = NULL;

273

302

FILE *conffp;

274

303

size_t d_name_len;

275

304

DIR *dir = NULL;

298

327

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

299

328

if(ret == -1){

300

329

perror("sigaction");

301

exitstatus = EXIT_FAILURE;

330

exitstatus = EXIT_FAILURE;

302

331

goto fallback;

303

332

}

304

333

307

336

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

308

337

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

309

338

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

310

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

339

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

311

340

.arg = "VAR=value",

312

341

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

313

342

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

314

343

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

315

344

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

316

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

345

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

317

346

.arg = "PLUGIN:ENV=value",

318

347

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

319

348

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

322

351

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

323

352

.arg = "DIRECTORY",

324

353

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

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 },

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 },

333

365

{ .name = NULL }

334

366

};

335

367

336

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) {

337

370

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

338

371

pointer to our plugin list pointer. */

339

plugin **plugins = state->input;

340

372

switch (key) {

341

case 'g':

373

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

342

374

if (arg != NULL){

343

375

char *p;

344

376

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

345

377

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

346

378

continue;

347

379

}

348

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

380

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

349

381

perror("add_argument");

350

382

return ARGP_ERR_UNKNOWN;

351

383

}

352

384

}

353

385

}

354

386

break;

355

case 'e':

387

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

356

388

if(arg == NULL){

357

389

break;

358

390

}

361

393

if(envdef == NULL){

362

394

break;

363

395

}

364

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

396

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

365

397

perror("add_environment");

366

398

}

367

399

}

368

400

break;

369

case 'o':

401

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

370

402

if (arg != NULL){

371

403

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

372

404

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

382

414

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

383

415

continue;

384

416

}

385

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

417

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

386

418

perror("add_argument");

387

419

return ARGP_ERR_UNKNOWN;

388

420

}

390

422

}

391

423

}

392

424

break;

393

case 'f':

425

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

394

426

if(arg == NULL){

395

427

break;

396

428

}

404

436

break;

405

437

}

406

438

envdef++;

407

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

439

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

408

440

perror("add_environment");

409

441

}

410

442

}

411

443

break;

412

case 'd':

444

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

413

445

if (arg != NULL){

414

plugin *p = getplugin(arg, plugins);

446

plugin *p = getplugin(arg);

415

447

if(p == NULL){

416

448

return ARGP_ERR_UNKNOWN;

417

449

}

418

450

p->disabled = true;

419

451

}

420

452

break;

421

case 128:

422

plugindir = arg;

453

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

454

plugindir = strdup(arg);

455

if(plugindir == NULL){

456

perror("strdup");

457

}

423

458

break;

424

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 */

425

466

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

426

467

break;

427

case 130:

468

case 131: /* --groupid */

428

469

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

429

470

break;

430

case 131:

471

case 132: /* --debug */

431

472

debug = true;

432

473

break;

433

474

case ARGP_KEY_ARG:

441

482

return 0;

442

483

}

443

484

444

plugin *plugin_list = NULL;

445

446

485

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

447

486

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

448

487

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

449

488

450

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

489

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

451

490

if (ret == ARGP_ERR_UNKNOWN){

452

491

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

453

492

exitstatus = EXIT_FAILURE;

454

493

goto fallback;

455

494

}

456

495

457

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

}

458

502

if(conffp != NULL){

459

503

char *org_line = NULL;

460

504

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

463

507

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

464

508

const char comment_delim[] = "#";

465

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 */

466

522

while(true){

467

523

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

468

524

if(sret == -1){

476

532

continue;

477

533

}

478

534

new_arg = strdup(p);

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

}

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;

485

553

}

486

554

}

487

555

free(org_line);

494

562

goto fallback;

495

563

}

496

564

}

497

565

/* If there was any arguments from configuration file,

566

pass them to parser as command arguments */

498

567

if(custom_argv != NULL){

499

custom_argv[0] = argv[0];

500

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

568

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

501

569

if (ret == ARGP_ERR_UNKNOWN){

502

570

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

503

571

exitstatus = EXIT_FAILURE;

518

586

}

519

587

}

520

588

}

521

589

590

/* Strip permissions down to nobody */

522

591

ret = setuid(uid);

523

592

if (ret == -1){

524

593

perror("setuid");

525

}

526

594

}

527

595

setgid(gid);

528

596

if (ret == -1){

529

597

perror("setgid");

530

598

}

599

600

if (plugindir == NULL){

601

dir = opendir(PDIR);

602

} else {

603

dir = opendir(plugindir);

604

}

531

605

532

dir = opendir(plugindir);

533

606

if(dir == NULL){

534

607

perror("Could not open plugin dir");

535

608

exitstatus = EXIT_FAILURE;

550

623

}

551

624

552

625

FD_ZERO(&rfds_all);

553

626

627

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

554

628

while(true){

555

629

dirst = readdir(dir);

556

630

587

661

break;

588

662

}

589

663

}

590

591

664

if(bad_name){

592

665

continue;

593

666

}

594

595

667

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

596

668

size_t suf_len = strlen(*suf);

597

669

if((d_name_len >= suf_len)

624

696

free(filename);

625

697

continue;

626

698

}

627

699

700

/* Ignore non-executable files */

628

701

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

629

702

if(debug){

630

703

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

633

706

free(filename);

634

707

continue;

635

708

}

636

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

709

710

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

637

711

if(p == NULL){

638

712

perror("getplugin");

639

713

free(filename);

649

723

}

650

724

{

651

725

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

652

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

726

plugin *g = getplugin(NULL);

653

727

if(g != NULL){

654

728

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

655

729

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

680

754

}

681

755

}

682

756

683

int pipefd[2];

757

int pipefd[2];

684

758

ret = pipe(pipefd);

685

759

if (ret == -1){

686

760

perror("pipe");

687

761

exitstatus = EXIT_FAILURE;

688

762

goto fallback;

689

763

}

764

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

690

765

ret = set_cloexec_flag(pipefd[0]);

691

766

if(ret < 0){

692

767

perror("set_cloexec_flag");

750

825

}

751

826

/* no return */

752

827

}

753

/* parent process */

828

/* Parent process */

829

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

754

830

free(filename);

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");

831

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

832

if (new_plugin == NULL){

833

perror("getplugin");

759

834

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

760

835

if(ret < 0){

761

perror("sigprocmask");

836

perror("sigprocmask");

762

837

}

763

838

exitstatus = EXIT_FAILURE;

764

839

goto fallback;

765

840

}

766

841

767

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

768

.fd = pipefd[0],

769

.next = process_list };

770

// List handling

771

process_list = new_process;

842

new_plugin->pid = pid;

843

new_plugin->fd = pipefd[0];

844

772

845

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

773

846

has already completed */

774

847

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

778

851

goto fallback;

779

852

}

780

853

781

FD_SET(new_process->fd, &rfds_all);

854

FD_SET(new_plugin->fd, &rfds_all);

782

855

783

if (maxfd < new_process->fd){

784

maxfd = new_process->fd;

856

if (maxfd < new_plugin->fd){

857

maxfd = new_plugin->fd;

785

858

}

786

859

787

860

}

788

861

789

free_plugin_list(plugin_list);

790

791

862

closedir(dir);

792

863

dir = NULL;

793

794

if (process_list == NULL){

795

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

796

" directory?\n");

797

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

}

798

874

}

799

while(process_list){

875

876

/* Main loop while running plugins exist */

877

while(plugin_list){

800

878

fd_set rfds = rfds_all;

801

879

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

802

880

if (select_ret == -1){

806

884

}

807

885

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

808

886

from one of them */

809

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

887

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

810

888

/* Is this process completely done? */

811

889

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

812

890

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

813

891

if(not WIFEXITED(proc->status)

814

892

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

815

893

/* Bad exit by plugin */

894

816

895

if(debug){

817

896

if(WIFEXITED(proc->status)){

818

897

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

827

906

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

828

907

}

829

908

}

909

830

910

/* Remove the plugin */

831

911

FD_CLR(proc->fd, &rfds_all);

912

832

913

/* Block signal while modifying process_list */

833

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

914

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

834

915

if(ret < 0){

835

916

perror("sigprocmask");

836

917

exitstatus = EXIT_FAILURE;

837

918

goto fallback;

838

919

}

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

}

920

free_plugin(proc);

852

921

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

853

922

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

854

923

NULL);

855

924

if(ret < 0){

856

925

perror("sigprocmask");

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;

926

exitstatus = EXIT_FAILURE;

927

goto fallback;

928

}

929

930

if(plugin_list == NULL){

931

break;

932

}

933

continue;

864

934

}

935

865

936

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

866

937

867

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

938

bool bret = print_out_password(proc->buffer,

939

proc->buffer_length);

868

940

if(not bret){

869

941

perror("print_out_password");

870

942

exitstatus = EXIT_FAILURE;

871

943

}

872

944

goto fallback;

873

945

}

946

874

947

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

875

948

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

876

949

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

906

979

907

980

fallback:

908

981

909

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

910

/* 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 */

911

985

bool bret;

912

986

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

913

987

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

926

1000

}

927

1001

928

1002

if(custom_argv != NULL){

929

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

1003

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

930

1004

free(*arg);

931

1005

}

932

1006

free(custom_argv);

933

1007

}

934

free_plugin_list(plugin_list);

935

1008

936

1009

if(dir != NULL){

937

1010

closedir(dir);

938

1011

}

939

1012

940

1013

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

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");

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

}

948

1022

}

949

free(process_list->buffer);

950

free(process_list);

951

1023

}

952

1024

953

1025

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

957

1029

if(errno != ECHILD){

958

1030

perror("wait");

959

1031

}

1032

1033

free_plugin_list();

1034

1035

free(plugindir);

1036

free(argfile);

960

1037

961

1038

return exitstatus;

962

1039

}