| 1 |
/* |
| 2 |
* ccs-queryd.c |
| 3 |
* |
| 4 |
* TOMOYO Linux's utilities. |
| 5 |
* |
| 6 |
* Copyright (C) 2005-2010 NTT DATA CORPORATION |
| 7 |
* |
| 8 |
* Version: 1.8.0-pre 2010/08/01 |
| 9 |
* |
| 10 |
*/ |
| 11 |
#include "ccstools.h" |
| 12 |
#include "readline.h" |
| 13 |
|
| 14 |
#define CCS_GLOBALLY_READABLE_FILES_UPDATE_NONE 0 |
| 15 |
#define CCS_GLOBALLY_READABLE_FILES_UPDATE_ASK 1 |
| 16 |
#define CCS_GLOBALLY_READABLE_FILES_UPDATE_AUTO 2 |
| 17 |
|
| 18 |
/* Prototypes */ |
| 19 |
|
| 20 |
static void ccs_printw(const char *fmt, ...) __attribute__ ((format(printf, 1, 2))); |
| 21 |
static int ccs_send_encoded(const int fd, const char *fmt, ...) __attribute__ ((format(printf, 2, 3))); |
| 22 |
static void ccs_do_check_update(const int fd); |
| 23 |
static void ccs_handle_update(const int ccs_check_update, const int fd); |
| 24 |
/* |
| 25 |
static _Bool ccs_convert_path_info(FILE *fp, const struct ccs_path_info *pattern, const char *new); |
| 26 |
*/ |
| 27 |
static _Bool ccs_handle_query(unsigned int serial); |
| 28 |
|
| 29 |
/* Utility functions */ |
| 30 |
|
| 31 |
static void ccs_printw(const char *fmt, ...) |
| 32 |
{ |
| 33 |
va_list args; |
| 34 |
int i; |
| 35 |
int len; |
| 36 |
char *buffer; |
| 37 |
va_start(args, fmt); |
| 38 |
len = vsnprintf((char *) &i, sizeof(i) - 1, fmt, args) + 16; |
| 39 |
va_end(args); |
| 40 |
buffer = malloc(len); |
| 41 |
if (!buffer) |
| 42 |
ccs_out_of_memory(); |
| 43 |
va_start(args, fmt); |
| 44 |
len = vsnprintf(buffer, len, fmt, args); |
| 45 |
va_end(args); |
| 46 |
for (i = 0; i < len; i++) { |
| 47 |
addch(buffer[i]); |
| 48 |
refresh(); |
| 49 |
} |
| 50 |
free(buffer); |
| 51 |
} |
| 52 |
|
| 53 |
static int ccs_send_encoded(const int fd, const char *fmt, ...) |
| 54 |
{ |
| 55 |
va_list args; |
| 56 |
int i; |
| 57 |
int len; |
| 58 |
char *buffer; |
| 59 |
char *sp; |
| 60 |
char *dp; |
| 61 |
va_start(args, fmt); |
| 62 |
len = vsnprintf((char *) &i, sizeof(i) - 1, fmt, args) + 16; |
| 63 |
va_end(args); |
| 64 |
buffer = malloc(len * 5); |
| 65 |
if (!buffer) |
| 66 |
ccs_out_of_memory(); |
| 67 |
va_start(args, fmt); |
| 68 |
vsnprintf(buffer, len, fmt, args); |
| 69 |
va_end(args); |
| 70 |
sp = buffer; |
| 71 |
dp = buffer + len; |
| 72 |
while (true) { |
| 73 |
unsigned char c = *(const unsigned char *) sp++; |
| 74 |
if (!c) { |
| 75 |
*dp++ = '\0'; |
| 76 |
break; |
| 77 |
} else if (c == '\\') { |
| 78 |
*dp++ = '\\'; |
| 79 |
*dp++ = '\\'; |
| 80 |
} else if (c > ' ' && c < 127) { |
| 81 |
*dp++ = c; |
| 82 |
} else { |
| 83 |
*dp++ = '\\'; |
| 84 |
*dp++ = (c >> 6) + '0'; |
| 85 |
*dp++ = ((c >> 3) & 7) + '0'; |
| 86 |
*dp++ = (c & 7) + '0'; |
| 87 |
} |
| 88 |
} |
| 89 |
len = send(fd, buffer + len, strlen(buffer + len), 0); |
| 90 |
free(buffer); |
| 91 |
return len; |
| 92 |
} |
| 93 |
|
| 94 |
#if 0 |
| 95 |
static _Bool ccs_check_path_info(const char *buffer) |
| 96 |
{ |
| 97 |
_Bool modified = false; |
| 98 |
static struct ccs_path_info *update_list = NULL; |
| 99 |
static int update_list_len = 0; |
| 100 |
char *sp = strdup(buffer); |
| 101 |
char *str = sp; |
| 102 |
const char *path_list[2] = { |
| 103 |
CCS_PROC_POLICY_EXCEPTION_POLICY, |
| 104 |
CCS_PROC_POLICY_DOMAIN_POLICY |
| 105 |
}; |
| 106 |
if (!str) |
| 107 |
return false; |
| 108 |
while (true) { |
| 109 |
int i; |
| 110 |
char *cp = strsep(&sp, " "); |
| 111 |
if (!cp) |
| 112 |
break; |
| 113 |
for (i = 0; i < update_list_len; i++) { |
| 114 |
int j; |
| 115 |
struct ccs_path_info old; |
| 116 |
/* TODO: split cp at upadte_list's depth. */ |
| 117 |
old.name = cp; |
| 118 |
ccs_fill_path_info(&old); |
| 119 |
if (!ccs_path_matches_pattern(&old, &update_list[i])) |
| 120 |
continue; |
| 121 |
for (j = 0; j < 2; j++) { |
| 122 |
FILE *fp = fopen(path_list[j], "r+"); |
| 123 |
if (!fp) |
| 124 |
continue; |
| 125 |
if (convert_path_info(fp, &update_list[i], cp)) |
| 126 |
modified = true; |
| 127 |
fclose(fp); |
| 128 |
} |
| 129 |
} |
| 130 |
} |
| 131 |
free(str); |
| 132 |
return modified; |
| 133 |
} |
| 134 |
#endif |
| 135 |
|
| 136 |
static void ccs_do_check_update(const int fd) |
| 137 |
{ |
| 138 |
FILE *fp_in = fopen(CCS_PROC_POLICY_EXCEPTION_POLICY, "r"); |
| 139 |
char **pathnames = NULL; |
| 140 |
int pathnames_len = 0; |
| 141 |
char buffer[16384]; |
| 142 |
memset(buffer, 0, sizeof(buffer)); |
| 143 |
if (!fp_in) { |
| 144 |
fprintf(stderr, "Can't open policy file.\n"); |
| 145 |
return; |
| 146 |
} |
| 147 |
while (fgets(buffer, sizeof(buffer) - 1, fp_in)) { |
| 148 |
char *cp = strchr(buffer, '\n'); |
| 149 |
if (!cp) |
| 150 |
break; |
| 151 |
*cp = '\0'; |
| 152 |
if (!ccs_str_starts(buffer, "acl_group ")) |
| 153 |
continue; |
| 154 |
cp = strchr(buffer, ' '); |
| 155 |
if (!cp) |
| 156 |
continue; |
| 157 |
memmove(buffer, cp + 1, strlen(cp + 1) + 1); |
| 158 |
if (!ccs_str_starts(buffer, "file read ")) |
| 159 |
continue; |
| 160 |
if (!ccs_decode(buffer, buffer)) |
| 161 |
continue; |
| 162 |
pathnames = realloc(pathnames, sizeof(char *) * |
| 163 |
(pathnames_len + 1)); |
| 164 |
if (!pathnames) |
| 165 |
ccs_out_of_memory(); |
| 166 |
pathnames[pathnames_len] = strdup(buffer); |
| 167 |
if (!pathnames[pathnames_len]) |
| 168 |
ccs_out_of_memory(); |
| 169 |
pathnames_len++; |
| 170 |
} |
| 171 |
fclose(fp_in); |
| 172 |
while (true) { |
| 173 |
struct stat64 buf; |
| 174 |
static time_t last_modified = 0; |
| 175 |
int i; |
| 176 |
sleep(1); |
| 177 |
for (i = 0; i < pathnames_len; i++) { |
| 178 |
int j; |
| 179 |
if (!stat64(pathnames[i], &buf)) |
| 180 |
continue; |
| 181 |
ccs_send_encoded(fd, "-%s", pathnames[i]); |
| 182 |
free(pathnames[i]); |
| 183 |
pathnames_len--; |
| 184 |
for (j = i; j < pathnames_len; j++) |
| 185 |
pathnames[j] = pathnames[j + 1]; |
| 186 |
i--; |
| 187 |
} |
| 188 |
if (stat64("/etc/ld.so.cache", &buf) || |
| 189 |
buf.st_mtime == last_modified) |
| 190 |
continue; |
| 191 |
fp_in = popen("/sbin/ldconfig -NXp", "r"); |
| 192 |
if (!fp_in) |
| 193 |
continue; |
| 194 |
last_modified = buf.st_mtime; |
| 195 |
memset(buffer, 0, sizeof(buffer)); |
| 196 |
while (fgets(buffer, sizeof(buffer) - 1, fp_in)) { |
| 197 |
char *cp = strchr(buffer, '\n'); |
| 198 |
char *real_pathname; |
| 199 |
if (!cp) |
| 200 |
break; |
| 201 |
*cp = '\0'; |
| 202 |
cp = strrchr(buffer, ' '); |
| 203 |
if (!cp || *++cp != '/') |
| 204 |
continue; |
| 205 |
if (stat64(cp, &buf)) |
| 206 |
continue; |
| 207 |
real_pathname = realpath(cp, NULL); |
| 208 |
if (!real_pathname) |
| 209 |
continue; |
| 210 |
for (i = 0; i < pathnames_len; i++) { |
| 211 |
if (!strcmp(real_pathname, pathnames[i])) |
| 212 |
break; |
| 213 |
} |
| 214 |
if (i == pathnames_len) { |
| 215 |
char *cp; |
| 216 |
pathnames = realloc(pathnames, sizeof(char *) * |
| 217 |
(pathnames_len + 1)); |
| 218 |
if (!pathnames) |
| 219 |
ccs_out_of_memory(); |
| 220 |
cp = strdup(real_pathname); |
| 221 |
if (!cp) |
| 222 |
ccs_out_of_memory(); |
| 223 |
pathnames[pathnames_len++] = cp; |
| 224 |
ccs_send_encoded(fd, "+%s", pathnames[i]); |
| 225 |
} |
| 226 |
free(real_pathname); |
| 227 |
} |
| 228 |
pclose(fp_in); |
| 229 |
} |
| 230 |
} |
| 231 |
|
| 232 |
#if 0 |
| 233 |
static _Bool ccs_convert_path_info(FILE *fp, const struct ccs_path_info *pattern, |
| 234 |
const char *new) |
| 235 |
{ |
| 236 |
_Bool modified = false; |
| 237 |
const char *cp = pattern->name; |
| 238 |
int depth = 0; |
| 239 |
while (*cp) |
| 240 |
if (*cp++ == '/') |
| 241 |
depth++; |
| 242 |
while (true) { |
| 243 |
int d = depth; |
| 244 |
char buffer[4096]; |
| 245 |
char *cp; |
| 246 |
if (fscanf(fp, "%4095s", buffer) != 1) |
| 247 |
break; |
| 248 |
if (buffer[0] != '/') |
| 249 |
goto out; |
| 250 |
cp = buffer; |
| 251 |
while (*cp) { |
| 252 |
char c; |
| 253 |
struct ccs_path_info old; |
| 254 |
_Bool matched; |
| 255 |
if (*cp != '/' || --d) |
| 256 |
continue; |
| 257 |
cp++; |
| 258 |
c = *cp; |
| 259 |
*cp = '\0'; |
| 260 |
old.name = buffer; |
| 261 |
ccs_fill_path_info(&old); |
| 262 |
matched = ccs_path_matches_pattern(&old, pattern); |
| 263 |
*cp = c; |
| 264 |
if (matched) { |
| 265 |
fprintf(fp, "%s%s", new, cp); |
| 266 |
modified = true; |
| 267 |
buffer[0] = '\0'; |
| 268 |
break; |
| 269 |
} |
| 270 |
} |
| 271 |
out: |
| 272 |
fprintf(fp, "%s ", buffer); |
| 273 |
} |
| 274 |
return modified; |
| 275 |
} |
| 276 |
#endif |
| 277 |
|
| 278 |
static void ccs_send_keepalive(void) |
| 279 |
{ |
| 280 |
static time_t previous = 0; |
| 281 |
time_t now = time(NULL); |
| 282 |
if (previous != now || !previous) { |
| 283 |
previous = now; |
| 284 |
write(ccs_query_fd, "\n", 1); |
| 285 |
} |
| 286 |
} |
| 287 |
|
| 288 |
static void ccs_handle_update(const int check_update, const int fd) |
| 289 |
{ |
| 290 |
static FILE *fp = NULL; |
| 291 |
char pathname[8192]; |
| 292 |
int c; |
| 293 |
if (!fp) |
| 294 |
fp = fopen(CCS_PROC_POLICY_EXCEPTION_POLICY, "w"); |
| 295 |
memset(pathname, 0, sizeof(pathname)); |
| 296 |
if (recv(fd, pathname, sizeof(pathname) - 1, 0) == EOF) |
| 297 |
return; |
| 298 |
if (check_update == CCS_GLOBALLY_READABLE_FILES_UPDATE_AUTO) { |
| 299 |
if (pathname[0] == '-') |
| 300 |
fprintf(fp, CCS_KEYWORD_DELETE); |
| 301 |
fprintf(fp, "acl_group 0 file read %s\n", pathname + 1); |
| 302 |
fflush(fp); |
| 303 |
ccs_printw("The pathname %s was %s globally readable file.\n\n", |
| 304 |
pathname + 1, (pathname[0] == '-') ? |
| 305 |
"deleted. Deleted from" : "created. Appended to"); |
| 306 |
return; |
| 307 |
} |
| 308 |
ccs_printw("The pathname %s was %s globally readable file? ('Y'es/'N'o):", |
| 309 |
pathname + 1, (pathname[0] == '-') ? |
| 310 |
"deleted. Delete from" : "created. Append to"); |
| 311 |
while (true) { |
| 312 |
c = ccs_getch2(); |
| 313 |
if (c == 'Y' || c == 'y' || c == 'N' || c == 'n') |
| 314 |
break; |
| 315 |
ccs_send_keepalive(); |
| 316 |
} |
| 317 |
ccs_printw("%c\n", c); |
| 318 |
if (c == 'Y' || c == 'y') { |
| 319 |
if (pathname[0] == '-') |
| 320 |
fprintf(fp, CCS_KEYWORD_DELETE); |
| 321 |
fprintf(fp, "acl_group 0 file read %s\n", pathname + 1); |
| 322 |
fflush(fp); |
| 323 |
} |
| 324 |
ccs_printw("\n"); |
| 325 |
} |
| 326 |
|
| 327 |
/* Variables */ |
| 328 |
|
| 329 |
static unsigned short int ccs_retries = 0; |
| 330 |
|
| 331 |
static int ccs_check_update = CCS_GLOBALLY_READABLE_FILES_UPDATE_AUTO; |
| 332 |
|
| 333 |
static FILE *ccs_domain_fp = NULL; |
| 334 |
static int ccs_domain_policy_fd = EOF; |
| 335 |
#define CCS_MAX_READLINE_HISTORY 20 |
| 336 |
static const char **ccs_readline_history = NULL; |
| 337 |
static int ccs_readline_history_count = 0; |
| 338 |
static const int ccs_buffer_len = 32768; |
| 339 |
static char *ccs_buffer = NULL; |
| 340 |
|
| 341 |
/* Main functions */ |
| 342 |
|
| 343 |
static _Bool ccs_handle_query(unsigned int serial) |
| 344 |
{ |
| 345 |
int c = 0; |
| 346 |
int y; |
| 347 |
int x; |
| 348 |
char *line = NULL; |
| 349 |
static unsigned int prev_pid = 0; |
| 350 |
unsigned int pid; |
| 351 |
time_t stamp; |
| 352 |
char pidbuf[128]; |
| 353 |
char *cp = strstr(ccs_buffer, " (global-pid="); |
| 354 |
if (!cp || sscanf(cp + 13, "%u", &pid) != 1) { |
| 355 |
ccs_printw("ERROR: Unsupported query.\n"); |
| 356 |
return false; |
| 357 |
} |
| 358 |
cp = ccs_buffer + strlen(ccs_buffer); |
| 359 |
if (*(cp - 1) != '\n') { |
| 360 |
ccs_printw("ERROR: Unsupported query.\n"); |
| 361 |
return false; |
| 362 |
} |
| 363 |
*(cp - 1) = '\0'; |
| 364 |
/* |
| 365 |
if (0 && !ccs_retries && check_path_info(ccs_buffer)) { |
| 366 |
c = 'r'; |
| 367 |
goto write_answer; |
| 368 |
} |
| 369 |
*/ |
| 370 |
if (pid != prev_pid) { |
| 371 |
if (prev_pid) |
| 372 |
ccs_printw("----------------------------------------\n"); |
| 373 |
prev_pid = pid; |
| 374 |
} |
| 375 |
if (sscanf(ccs_buffer, "#timestamp=%lu", &stamp) == 1) { |
| 376 |
cp = strchr(ccs_buffer, ' '); |
| 377 |
if (cp) { |
| 378 |
struct tm *tm = localtime(&stamp); |
| 379 |
ccs_printw("#%04d-%02d-%02d %02d:%02d:%02d#", |
| 380 |
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, |
| 381 |
tm->tm_hour, tm->tm_min, tm->tm_sec); |
| 382 |
memmove(ccs_buffer, cp, strlen(cp) + 1); |
| 383 |
} |
| 384 |
} |
| 385 |
ccs_printw("%s\n", ccs_buffer); |
| 386 |
/* Is this domain query? */ |
| 387 |
if (strstr(ccs_buffer, "\n#")) |
| 388 |
goto not_domain_query; |
| 389 |
memset(pidbuf, 0, sizeof(pidbuf)); |
| 390 |
snprintf(pidbuf, sizeof(pidbuf) - 1, "select global-pid=%u\n", pid); |
| 391 |
ccs_printw("Allow? ('Y'es/'N'o/'R'etry/'S'how policy/'A'dd to policy " |
| 392 |
"and retry):"); |
| 393 |
while (true) { |
| 394 |
c = ccs_getch2(); |
| 395 |
if (c == 'Y' || c == 'y' || c == 'N' || c == 'n' || c == 'R' || |
| 396 |
c == 'r' || c == 'A' || c == 'a' || c == 'S' || c == 's') |
| 397 |
break; |
| 398 |
ccs_send_keepalive(); |
| 399 |
} |
| 400 |
ccs_printw("%c\n", c); |
| 401 |
|
| 402 |
if (c == 'S' || c == 's') { |
| 403 |
if (ccs_network_mode) { |
| 404 |
fprintf(ccs_domain_fp, "%s", pidbuf); |
| 405 |
fputc(0, ccs_domain_fp); |
| 406 |
fflush(ccs_domain_fp); |
| 407 |
rewind(ccs_domain_fp); |
| 408 |
while (1) { |
| 409 |
char c; |
| 410 |
if (fread(&c, 1, 1, ccs_domain_fp) != 1 || !c) |
| 411 |
break; |
| 412 |
addch(c); |
| 413 |
refresh(); |
| 414 |
ccs_send_keepalive(); |
| 415 |
} |
| 416 |
} else { |
| 417 |
write(ccs_domain_policy_fd, pidbuf, strlen(pidbuf)); |
| 418 |
while (1) { |
| 419 |
int i; |
| 420 |
int len = read(ccs_domain_policy_fd, ccs_buffer, |
| 421 |
ccs_buffer_len - 1); |
| 422 |
if (len <= 0) |
| 423 |
break; |
| 424 |
for (i = 0; i < len; i++) { |
| 425 |
addch(ccs_buffer[i]); |
| 426 |
refresh(); |
| 427 |
} |
| 428 |
ccs_send_keepalive(); |
| 429 |
} |
| 430 |
} |
| 431 |
c = 'r'; |
| 432 |
} |
| 433 |
|
| 434 |
/* Append to domain policy. */ |
| 435 |
if (c != 'A' && c != 'a') |
| 436 |
goto not_append; |
| 437 |
c = 'r'; |
| 438 |
getyx(stdscr, y, x); |
| 439 |
cp = strrchr(ccs_buffer, '\n'); |
| 440 |
if (!cp) |
| 441 |
return false; |
| 442 |
*cp++ = '\0'; |
| 443 |
ccs_initial_readline_data = cp; |
| 444 |
ccs_readline_history_count = ccs_add_history(cp, ccs_readline_history, |
| 445 |
ccs_readline_history_count, |
| 446 |
CCS_MAX_READLINE_HISTORY); |
| 447 |
line = ccs_readline(y, 0, "Enter new entry> ", ccs_readline_history, |
| 448 |
ccs_readline_history_count, 128000, 8); |
| 449 |
scrollok(stdscr, TRUE); |
| 450 |
ccs_printw("\n"); |
| 451 |
if (!line || !*line) { |
| 452 |
ccs_printw("None added.\n"); |
| 453 |
goto not_append; |
| 454 |
} |
| 455 |
ccs_readline_history_count = ccs_add_history(line, ccs_readline_history, |
| 456 |
ccs_readline_history_count, |
| 457 |
CCS_MAX_READLINE_HISTORY); |
| 458 |
if (ccs_network_mode) { |
| 459 |
fprintf(ccs_domain_fp, "%s%s\n", pidbuf, line); |
| 460 |
fflush(ccs_domain_fp); |
| 461 |
} else { |
| 462 |
write(ccs_domain_policy_fd, pidbuf, strlen(pidbuf)); |
| 463 |
write(ccs_domain_policy_fd, line, strlen(line)); |
| 464 |
write(ccs_domain_policy_fd, "\n", 1); |
| 465 |
} |
| 466 |
ccs_printw("Added '%s'.\n", line); |
| 467 |
not_append: |
| 468 |
free(line); |
| 469 |
write_answer: |
| 470 |
/* Write answer. */ |
| 471 |
if (c == 'Y' || c == 'y' || c == 'A' || c == 'a') |
| 472 |
c = 1; |
| 473 |
else if (c == 'R' || c == 'r') |
| 474 |
c = 3; |
| 475 |
else |
| 476 |
c = 2; |
| 477 |
snprintf(ccs_buffer, ccs_buffer_len - 1, "A%u=%u\n", serial, c); |
| 478 |
write(ccs_query_fd, ccs_buffer, strlen(ccs_buffer)); |
| 479 |
ccs_printw("\n"); |
| 480 |
return true; |
| 481 |
not_domain_query: |
| 482 |
ccs_printw("Allow? ('Y'es/'N'o/'R'etry):"); |
| 483 |
while (true) { |
| 484 |
c = ccs_getch2(); |
| 485 |
if (c == 'Y' || c == 'y' || c == 'N' || c == 'n' || |
| 486 |
c == 'R' || c == 'r') |
| 487 |
break; |
| 488 |
ccs_send_keepalive(); |
| 489 |
} |
| 490 |
ccs_printw("%c\n", c); |
| 491 |
goto write_answer; |
| 492 |
} |
| 493 |
|
| 494 |
int main(int argc, char *argv[]) |
| 495 |
{ |
| 496 |
int pipe_fd[2] = { EOF, EOF }; |
| 497 |
if (argc == 1) |
| 498 |
goto ok; |
| 499 |
{ |
| 500 |
char *cp = strchr(argv[1], ':'); |
| 501 |
if (cp) { |
| 502 |
*cp++ = '\0'; |
| 503 |
ccs_network_ip = inet_addr(argv[1]); |
| 504 |
ccs_network_port = htons(atoi(cp)); |
| 505 |
ccs_network_mode = true; |
| 506 |
if (!ccs_check_remote_host()) |
| 507 |
return 1; |
| 508 |
ccs_check_update = CCS_GLOBALLY_READABLE_FILES_UPDATE_NONE; |
| 509 |
goto ok; |
| 510 |
} |
| 511 |
} |
| 512 |
if (!strcmp(argv[1], "--no-update")) { |
| 513 |
ccs_check_update = CCS_GLOBALLY_READABLE_FILES_UPDATE_NONE; |
| 514 |
goto ok; |
| 515 |
} |
| 516 |
if (!strcmp(argv[1], "--ask-update")) { |
| 517 |
ccs_check_update = CCS_GLOBALLY_READABLE_FILES_UPDATE_ASK; |
| 518 |
goto ok; |
| 519 |
} |
| 520 |
printf("Usage: %s [--no-update|--ask-update|remote_ip:remote_port]\n\n", |
| 521 |
argv[0]); |
| 522 |
printf("This program is used for granting access requests manually.\n"); |
| 523 |
printf("This program shows access requests that are about to rejected " |
| 524 |
"by the kernel's decision.\n"); |
| 525 |
printf("If you answer before the kernel's decision taken effect, your " |
| 526 |
"decision will take effect.\n"); |
| 527 |
printf("You can use this program to respond to accidental access " |
| 528 |
"requests triggered by non-routine tasks (such as restarting " |
| 529 |
"daemons after updating).\n"); |
| 530 |
printf("To terminate this program, use 'Ctrl-C'.\n"); |
| 531 |
return 0; |
| 532 |
ok: |
| 533 |
if (ccs_network_mode) { |
| 534 |
ccs_query_fd = ccs_open_stream("proc:query"); |
| 535 |
ccs_domain_fp = ccs_open_write(CCS_PROC_POLICY_DOMAIN_POLICY); |
| 536 |
} else { |
| 537 |
ccs_query_fd = open(CCS_PROC_POLICY_QUERY, O_RDWR); |
| 538 |
ccs_domain_policy_fd = open(CCS_PROC_POLICY_DOMAIN_POLICY, O_RDWR); |
| 539 |
} |
| 540 |
if (ccs_query_fd == EOF) { |
| 541 |
fprintf(stderr, |
| 542 |
"You can't run this utility for this kernel.\n"); |
| 543 |
return 1; |
| 544 |
} else if (!ccs_network_mode && write(ccs_query_fd, "", 0) != 0) { |
| 545 |
fprintf(stderr, "You need to register this program to %s to " |
| 546 |
"run this program.\n", CCS_PROC_POLICY_MANAGER); |
| 547 |
return 1; |
| 548 |
} |
| 549 |
if (ccs_check_update != CCS_GLOBALLY_READABLE_FILES_UPDATE_NONE) { |
| 550 |
socketpair(AF_UNIX, SOCK_DGRAM, 0, pipe_fd); |
| 551 |
switch (fork()) { |
| 552 |
case 0: |
| 553 |
if (ccs_domain_fp) |
| 554 |
fclose(ccs_domain_fp); |
| 555 |
else |
| 556 |
close(ccs_domain_policy_fd); |
| 557 |
close(ccs_query_fd); |
| 558 |
close(pipe_fd[0]); |
| 559 |
ccs_do_check_update(pipe_fd[1]); |
| 560 |
_exit(0); |
| 561 |
case -1: |
| 562 |
fprintf(stderr, "Can't fork().\n"); |
| 563 |
return 1; |
| 564 |
} |
| 565 |
close(pipe_fd[1]); |
| 566 |
pipe_fd[1] = EOF; |
| 567 |
} |
| 568 |
ccs_readline_history = malloc(CCS_MAX_READLINE_HISTORY * sizeof(const char *)); |
| 569 |
if (!ccs_readline_history) |
| 570 |
ccs_out_of_memory(); |
| 571 |
ccs_send_keepalive(); |
| 572 |
initscr(); |
| 573 |
cbreak(); |
| 574 |
noecho(); |
| 575 |
nonl(); |
| 576 |
intrflush(stdscr, FALSE); |
| 577 |
keypad(stdscr, TRUE); |
| 578 |
clear(); |
| 579 |
refresh(); |
| 580 |
scrollok(stdscr, TRUE); |
| 581 |
if (ccs_network_mode) { |
| 582 |
const u32 ip = ntohl(ccs_network_ip); |
| 583 |
ccs_printw("Monitoring /proc/ccs/query via %u.%u.%u.%u:%u.", |
| 584 |
(u8) (ip >> 24), (u8) (ip >> 16), (u8) (ip >> 8), |
| 585 |
(u8) ip, ntohs(ccs_network_port)); |
| 586 |
} else |
| 587 |
ccs_printw("Monitoring /proc/ccs/query %s.", |
| 588 |
ccs_check_update != CCS_GLOBALLY_READABLE_FILES_UPDATE_NONE ? |
| 589 |
"and /etc/ld.so.cache " : ""); |
| 590 |
ccs_printw(" Press Ctrl-C to terminate.\n\n"); |
| 591 |
while (true) { |
| 592 |
static _Bool first = true; |
| 593 |
static unsigned int prev_serial = 0; |
| 594 |
fd_set rfds; |
| 595 |
unsigned int serial; |
| 596 |
char *cp; |
| 597 |
if (!ccs_buffer) { |
| 598 |
ccs_buffer = malloc(ccs_buffer_len); |
| 599 |
if (!ccs_buffer) |
| 600 |
break; |
| 601 |
} |
| 602 |
/* Wait for query. */ |
| 603 |
if (ccs_network_mode) { |
| 604 |
int i; |
| 605 |
write(ccs_query_fd, "", 1); |
| 606 |
memset(ccs_buffer, 0, ccs_buffer_len); |
| 607 |
for (i = 0; i < ccs_buffer_len - 1; i++) { |
| 608 |
if (read(ccs_query_fd, ccs_buffer + i, 1) != 1) |
| 609 |
break; |
| 610 |
if (!ccs_buffer[i]) |
| 611 |
goto read_ok; |
| 612 |
} |
| 613 |
break; |
| 614 |
} |
| 615 |
FD_ZERO(&rfds); |
| 616 |
FD_SET(ccs_query_fd, &rfds); |
| 617 |
if (pipe_fd[0] != EOF) |
| 618 |
FD_SET(pipe_fd[0], &rfds); |
| 619 |
select(ccs_query_fd > pipe_fd[0] ? ccs_query_fd + 1 : pipe_fd[0] + 1, |
| 620 |
&rfds, NULL, NULL, NULL); |
| 621 |
if (pipe_fd[0] != EOF && FD_ISSET(pipe_fd[0], &rfds)) |
| 622 |
ccs_handle_update(ccs_check_update, pipe_fd[0]); |
| 623 |
if (!FD_ISSET(ccs_query_fd, &rfds)) |
| 624 |
continue; |
| 625 |
|
| 626 |
/* Read query. */ |
| 627 |
memset(ccs_buffer, 0, ccs_buffer_len); |
| 628 |
if (read(ccs_query_fd, ccs_buffer, ccs_buffer_len - 1) <= 0) |
| 629 |
continue; |
| 630 |
read_ok: |
| 631 |
cp = strchr(ccs_buffer, '\n'); |
| 632 |
if (!cp) |
| 633 |
continue; |
| 634 |
*cp = '\0'; |
| 635 |
|
| 636 |
/* Get query number. */ |
| 637 |
if (sscanf(ccs_buffer, "Q%u-%hu", &serial, &ccs_retries) != 2) |
| 638 |
continue; |
| 639 |
memmove(ccs_buffer, cp + 1, strlen(cp + 1) + 1); |
| 640 |
|
| 641 |
first = false; |
| 642 |
prev_serial = serial; |
| 643 |
/* Clear pending input. */; |
| 644 |
timeout(0); |
| 645 |
while (true) { |
| 646 |
int c = ccs_getch2(); |
| 647 |
if (c == EOF || c == ERR) |
| 648 |
break; |
| 649 |
} |
| 650 |
timeout(1000); |
| 651 |
if (ccs_handle_query(serial)) |
| 652 |
continue; |
| 653 |
break; |
| 654 |
} |
| 655 |
endwin(); |
| 656 |
return 0; |
| 657 |
} |
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