/mandos/release : revision 138

65

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

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#define BUFFER_SIZE 256

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

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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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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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73

struct process;

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typedef struct process{

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struct plugin;

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typedef struct plugin{

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

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char **argv;

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int argc;

81

char **environ;

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int envc;

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bool disabled;

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/* Variables used for running processes*/

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pid_t pid;

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int fd;

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char *buffer;

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91

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{

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

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char **argv;

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int argc;

91

char **environ;

92

int envc;

93

bool disabled;

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struct plugin *next;

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} plugin;

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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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static plugin *plugin_list = NULL;

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/* Gets a existing plugin based on name,

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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){

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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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118

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 };

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.next = plugin_list };

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

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128

if (new_plugin->argv == NULL){

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132

}

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new_plugin->argv[0] = copy_name;

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new_plugin->argv[1] = NULL;

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

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if(new_plugin->environ == NULL){

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free(copy_name);

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141

return NULL;

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}

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new_plugin->environ[0] = NULL;

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140

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/* 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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147

return new_plugin;

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148

}

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149

174

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}

175

180

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/* Add to a plugin's environment */

177

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

182

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

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183

if(p == NULL){

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184

return false;

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185

}

186

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

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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++){

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

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/* 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;

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strcpy(*e, def);

199

}

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return true;

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}

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}

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

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}

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/*

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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. */

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

206

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while(true){

207

process *proc = process_list;

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plugin *proc = plugin_list;

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int status;

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

210

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if(pid == 0){

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252

}

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}

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255

/* Prints out a password to stdout */

235

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

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257

ssize_t ret;

237

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

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return true;

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269

}

249

270

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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;

271

/* 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++){

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free(*arg);

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}

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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}

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}

257

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

258

argv[1] = NULL;

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}

260

*argc += 1;

261

argv = realloc(argv, sizeof(char *)

262

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

263

if(argv == NULL){

264

return NULL;

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}

266

argv[*argc-1] = arg;

267

argv[*argc] = NULL;

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return argv;

296

}

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free(plugin_node);

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}

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300

271

static void free_plugin_list(plugin *plugin_list){

272

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

273

next = plugin_list->next;

274

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

275

free(*arg);

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}

277

free(plugin_list->argv);

278

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

279

free(*env);

280

}

281

free(plugin_list->environ);

282

free(plugin_list);

301

static void free_plugin_list(void){

302

while(plugin_list != NULL){

303

free_plugin(plugin_list);

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}

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}

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286

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

287

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

288

const char *argfile = ARGFILE;

308

char *plugindir = NULL;

309

char *argfile = NULL;

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FILE *conffp;

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size_t d_name_len;

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DIR *dir = NULL;

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

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

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

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

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

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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" },

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

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

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.arg = "PLUGIN:ENV=value",

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

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

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.arg = "PLUGIN",

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.doc = "Disable a specific plugin", .group = 1 },

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{ .name = "enable", .key = 'e',

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.arg = "PLUGIN",

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.doc = "Enable a specific plugin", .group = 1 },

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

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.arg = "DIRECTORY",

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364

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

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

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

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

344

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

345

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

346

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

347

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

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

365

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

366

.arg = "FILE",

367

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

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

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

370

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

371

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

372

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

373

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

374

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

375

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

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376

{ .name = NULL }

350

377

};

351

378

352

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

353

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

354

pointer to our plugin list pointer. */

355

plugin **plugins = state->input;

379

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

380

struct argp_state *state) {

356

381

switch (key) {

357

case 'g':

382

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

358

383

if (arg != NULL){

359

384

char *p;

360

385

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

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386

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

362

387

continue;

363

388

}

364

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

389

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

365

390

perror("add_argument");

366

391

return ARGP_ERR_UNKNOWN;

367

392

}

368

393

}

369

394

}

370

395

break;

371

case 'e':

396

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

372

397

if(arg == NULL){

373

398

break;

374

399

}

377

402

if(envdef == NULL){

378

403

break;

379

404

}

380

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

405

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

381

406

perror("add_environment");

382

407

}

383

408

}

384

409

break;

385

case 'o':

410

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

386

411

if (arg != NULL){

387

412

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

388

413

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

398

423

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

399

424

continue;

400

425

}

401

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

426

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

402

427

perror("add_argument");

403

428

return ARGP_ERR_UNKNOWN;

404

429

}

406

431

}

407

432

}

408

433

break;

409

case 'f':

434

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

410

435

if(arg == NULL){

411

436

break;

412

437

}

420

445

break;

421

446

}

422

447

envdef++;

423

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

448

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

424

449

perror("add_environment");

425

450

}

426

451

}

427

452

break;

428

case 'd':

453

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

429

454

if (arg != NULL){

430

plugin *p = getplugin(arg, plugins);

455

plugin *p = getplugin(arg);

431

456

if(p == NULL){

432

457

return ARGP_ERR_UNKNOWN;

433

458

}

434

459

p->disabled = true;

435

460

}

436

461

break;

437

case 128:

438

plugindir = arg;

439

break;

440

case 129:

462

case 'e': /* --enable */

463

if (arg != NULL){

464

plugin *p = getplugin(arg);

465

if(p == NULL){

466

return ARGP_ERR_UNKNOWN;

467

}

468

p->disabled = false;

469

}

470

break;

471

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

472

plugindir = strdup(arg);

473

if(plugindir == NULL){

474

perror("strdup");

475

}

476

break;

477

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

478

/* This is already done by parse_opt_config_file() */

479

break;

480

case 130: /* --userid */

441

481

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

442

482

break;

443

case 130:

483

case 131: /* --groupid */

444

484

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

445

485

break;

446

case 131:

486

case 132: /* --debug */

447

487

debug = true;

448

488

break;

449

489

case ARGP_KEY_ARG:

457

497

return 0;

458

498

}

459

499

460

plugin *plugin_list = NULL;

500

/* This option parser is the same as parse_opt() above, except it

501

ignores everything but the --config-file option. */

502

error_t parse_opt_config_file (int key, char *arg,

503

__attribute__((unused))

504

struct argp_state *state) {

505

switch (key) {

506

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

507

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

508

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

509

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

510

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

511

case 'e': /* --enable */

512

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

513

break;

514

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

515

argfile = strdup(arg);

516

if(argfile == NULL){

517

perror("strdup");

518

}

519

break;

520

case 130: /* --userid */

521

case 131: /* --groupid */

522

case 132: /* --debug */

523

case ARGP_KEY_ARG:

524

case ARGP_KEY_END:

525

break;

526

default:

527

return ARGP_ERR_UNKNOWN;

528

}

529

return 0;

530

}

461

531

462

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

463

.args_doc = "[+PLUS_SEPARATED_OPTIONS]",

532

struct argp argp = { .options = options,

533

.parser = parse_opt_config_file,

534

.args_doc = "",

464

535

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

465

536

466

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

537

/* Parse using the parse_opt_config_file in order to get the custom

538

config file location, if any. */

539

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

467

540

if (ret == ARGP_ERR_UNKNOWN){

468

541

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

469

542

exitstatus = EXIT_FAILURE;

470

543

goto fallback;

471

544

}

472

473

conffp = fopen(argfile, "r");

545

546

/* Reset to the normal argument parser */

547

argp.parser = parse_opt;

548

549

/* Open the configfile if available */

550

if (argfile == NULL){

551

conffp = fopen(AFILE, "r");

552

} else {

553

conffp = fopen(argfile, "r");

554

}

474

555

if(conffp != NULL){

475

556

char *org_line = NULL;

476

557

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

479

560

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

480

561

const char comment_delim[] = "#";

481

562

563

custom_argc = 1;

564

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

565

if(custom_argv == NULL){

566

perror("malloc");

567

exitstatus = EXIT_FAILURE;

568

goto fallback;

569

}

570

custom_argv[0] = argv[0];

571

custom_argv[1] = NULL;

572

573

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

574

commented text */

482

575

while(true){

483

576

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

484

577

if(sret == -1){

492

585

continue;

493

586

}

494

587

new_arg = strdup(p);

495

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

496

if (custom_argv == NULL){

497

perror("add_to_argv");

498

exitstatus = EXIT_FAILURE;

499

goto fallback;

500

}

588

if(new_arg == NULL){

589

perror("strdup");

590

exitstatus = EXIT_FAILURE;

591

free(org_line);

592

goto fallback;

593

}

594

595

custom_argc += 1;

596

custom_argv = realloc(custom_argv, sizeof(char *)

597

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

598

if(custom_argv == NULL){

599

perror("realloc");

600

exitstatus = EXIT_FAILURE;

601

free(org_line);

602

goto fallback;

603

}

604

custom_argv[custom_argc-1] = new_arg;

605

custom_argv[custom_argc] = NULL;

501

606

}

502

607

}

503

608

free(org_line);

504

} else{

609

} else {

505

610

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

506

611

not affect opening plugins */

507

612

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

510

615

goto fallback;

511

616

}

512

617

}

513

618

/* If there was any arguments from configuration file,

619

pass them to parser as command arguments */

514

620

if(custom_argv != NULL){

515

custom_argv[0] = argv[0];

516

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

621

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

622

0, NULL);

517

623

if (ret == ARGP_ERR_UNKNOWN){

518

624

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

519

625

exitstatus = EXIT_FAILURE;

521

627

}

522

628

}

523

629

630

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

631

config file */

632

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

633

if (ret == ARGP_ERR_UNKNOWN){

634

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

635

exitstatus = EXIT_FAILURE;

636

goto fallback;

637

}

638

524

639

if(debug){

525

640

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

526

641

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

535

650

}

536

651

}

537

652

653

/* Strip permissions down to nobody */

538

654

ret = setuid(uid);

539

655

if (ret == -1){

540

656

perror("setuid");

541

}

542

657

}

543

658

setgid(gid);

544

659

if (ret == -1){

545

660

perror("setgid");

546

661

}

547

662

548

dir = opendir(plugindir);

663

if (plugindir == NULL){

664

dir = opendir(PDIR);

665

} else {

666

dir = opendir(plugindir);

667

}

668

549

669

if(dir == NULL){

550

670

perror("Could not open plugin dir");

551

671

exitstatus = EXIT_FAILURE;

567

687

568

688

FD_ZERO(&rfds_all);

569

689

690

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

570

691

while(true){

571

692

dirst = readdir(dir);

572

693

573

// All directory entries have been processed

694

/* All directory entries have been processed */

574

695

if(dirst == NULL){

575

696

if (errno == EBADF){

576

697

perror("readdir");

582

703

583

704

d_name_len = strlen(dirst->d_name);

584

705

585

// Ignore dotfiles, backup files and other junk

706

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

586

707

{

587

708

bool bad_name = false;

588

709

603

724

break;

604

725

}

605

726

}

606

607

727

if(bad_name){

608

728

continue;

609

729

}

610

611

730

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

612

731

size_t suf_len = strlen(*suf);

613

732

if((d_name_len >= suf_len)

640

759

free(filename);

641

760

continue;

642

761

}

643

762

763

/* Ignore non-executable files */

644

764

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

645

765

if(debug){

646

766

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

649

769

free(filename);

650

770

continue;

651

771

}

652

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

772

773

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

653

774

if(p == NULL){

654

775

perror("getplugin");

655

776

free(filename);

665

786

}

666

787

{

667

788

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

668

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

789

plugin *g = getplugin(NULL);

669

790

if(g != NULL){

670

791

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

671

792

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

674

795

}

675

796

/* Add global environment variables */

676

797

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

677

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

798

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

678

799

perror("add_environment");

679

800

}

680

801

}

685

806

process, too. */

686

807

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

687

808

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

688

char *copy = strdup(*e);

689

if(copy == NULL){

690

perror("strdup");

691

continue;

692

}

693

if(not add_environment(p, copy)){

809

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

694

810

perror("add_environment");

695

811

}

696

812

}

703

819

exitstatus = EXIT_FAILURE;

704

820

goto fallback;

705

821

}

822

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

706

823

ret = set_cloexec_flag(pipefd[0]);

707

824

if(ret < 0){

708

825

perror("set_cloexec_flag");

722

839

exitstatus = EXIT_FAILURE;

723

840

goto fallback;

724

841

}

725

// Starting a new process to be watched

842

/* Starting a new process to be watched */

726

843

pid_t pid = fork();

727

844

if(pid == -1){

728

845

perror("fork");

766

883

}

767

884

/* no return */

768

885

}

769

/* parent process */

886

/* Parent process */

887

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

770

888

free(filename);

771

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

772

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

773

if (new_process == NULL){

774

perror("malloc");

889

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

890

if (new_plugin == NULL){

891

perror("getplugin");

775

892

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

776

893

if(ret < 0){

777

perror("sigprocmask");

894

perror("sigprocmask");

778

895

}

779

896

exitstatus = EXIT_FAILURE;

780

897

goto fallback;

781

898

}

782

899

783

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

784

.fd = pipefd[0],

785

.next = process_list };

786

// List handling

787

process_list = new_process;

900

new_plugin->pid = pid;

901

new_plugin->fd = pipefd[0];

902

788

903

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

789

904

has already completed */

790

905

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

794

909

goto fallback;

795

910

}

796

911

797

FD_SET(new_process->fd, &rfds_all);

912

FD_SET(new_plugin->fd, &rfds_all);

798

913

799

if (maxfd < new_process->fd){

800

maxfd = new_process->fd;

914

if (maxfd < new_plugin->fd){

915

maxfd = new_plugin->fd;

801

916

}

802

917

803

918

}

804

919

805

free_plugin_list(plugin_list);

806

plugin_list = NULL;

807

808

920

closedir(dir);

809

921

dir = NULL;

810

811

if (process_list == NULL){

812

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

813

" directory?\n");

814

process_list = NULL;

922

923

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

924

if(p->pid != 0){

925

break;

926

}

927

if(p->next == NULL){

928

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

929

" directory?\n");

930

free_plugin_list();

931

}

815

932

}

816

while(process_list){

933

934

/* Main loop while running plugins exist */

935

while(plugin_list){

817

936

fd_set rfds = rfds_all;

818

937

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

819

938

if (select_ret == -1){

823

942

}

824

943

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

825

944

from one of them */

826

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

945

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

827

946

/* Is this process completely done? */

828

947

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

829

948

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

830

949

if(not WIFEXITED(proc->status)

831

950

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

832

951

/* Bad exit by plugin */

952

833

953

if(debug){

834

954

if(WIFEXITED(proc->status)){

835

955

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

844

964

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

845

965

}

846

966

}

967

847

968

/* Remove the plugin */

848

969

FD_CLR(proc->fd, &rfds_all);

970

849

971

/* Block signal while modifying process_list */

850

972

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

851

973

if(ret < 0){

853

975

exitstatus = EXIT_FAILURE;

854

976

goto fallback;

855

977

}

856

/* Delete this process entry from the list */

857

if(process_list == proc){

858

/* First one - simple */

859

process_list = proc->next;

860

} else {

861

/* Second one or later */

862

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

863

if(p->next == proc){

864

p->next = proc->next;

865

break;

866

}

867

}

868

}

978

free_plugin(proc);

869

979

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

870

980

ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,

871

981

NULL);

872

982

if(ret < 0){

873

983

perror("sigprocmask");

874

}

875

free(proc->buffer);

876

free(proc);

877

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

878

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

879

the process list */

880

break;

984

exitstatus = EXIT_FAILURE;

985

goto fallback;

986

}

987

988

if(plugin_list == NULL){

989

break;

990

}

991

continue;

881

992

}

993

882

994

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

883

995

884

996

bool bret = print_out_password(proc->buffer,

889

1001

}

890

1002

goto fallback;

891

1003

}

1004

892

1005

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

893

1006

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

894

1007

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

924

1037

925

1038

fallback:

926

1039

927

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

1040

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

928

1041

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

929

1042

occured */

930

1043

bool bret;

945

1058

}

946

1059

947

1060

if(custom_argv != NULL){

948

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

1061

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

949

1062

free(*arg);

950

1063

}

951

1064

free(custom_argv);

952

1065

}

953

free_plugin_list(plugin_list);

954

1066

955

1067

if(dir != NULL){

956

1068

closedir(dir);

957

1069

}

958

1070

959

1071

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

960

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

961

next = process_list->next;

962

close(process_list->fd);

963

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

964

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

965

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

966

perror("kill");

1072

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

1073

if(p->pid != 0){

1074

close(p->fd);

1075

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

1076

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

1077

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

1078

perror("kill");

1079

}

967

1080

}

968

free(process_list->buffer);

969

free(process_list);

970

1081

}

971

1082

972

1083

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

976

1087

if(errno != ECHILD){

977

1088

perror("wait");

978

1089

}

1090

1091

free_plugin_list();

1092

1093

free(plugindir);

1094

free(argfile);

979

1095

980

1096

return exitstatus;

981

1097

}