| … | |
… | |
| 38 | #include <cstdlib> |
38 | #include <cstdlib> |
| 39 | |
39 | |
| 40 | #include <sys/types.h> |
40 | #include <sys/types.h> |
| 41 | #include <sys/socket.h> |
41 | #include <sys/socket.h> |
| 42 | #include <sys/wait.h> |
42 | #include <sys/wait.h> |
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|
43 | #include <sys/stat.h> |
| 43 | #include <errno.h> |
44 | #include <errno.h> |
| 44 | #include <time.h> |
45 | #include <time.h> |
| 45 | #include <unistd.h> |
46 | #include <unistd.h> |
| 46 | #include <fcntl.h> |
47 | #include <fcntl.h> |
| 47 | #include <sys/socket.h> |
48 | #include <sys/socket.h> |
| … | |
… | |
| 51 | #include "pidfile.h" |
52 | #include "pidfile.h" |
| 52 | |
53 | |
| 53 | #include "connection.h" |
54 | #include "connection.h" |
| 54 | #include "util.h" |
55 | #include "util.h" |
| 55 | #include "vpn.h" |
56 | #include "vpn.h" |
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|
57 | |
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|
58 | using namespace std; |
| 56 | |
59 | |
| 57 | vpn network; // THE vpn (bad design...) |
60 | vpn network; // THE vpn (bad design...) |
| 58 | |
61 | |
| 59 | ///////////////////////////////////////////////////////////////////////////// |
62 | ///////////////////////////////////////////////////////////////////////////// |
| 60 | |
63 | |
| … | |
… | |
| 392 | |
395 | |
| 393 | return 0; |
396 | return 0; |
| 394 | } |
397 | } |
| 395 | |
398 | |
| 396 | bool |
399 | bool |
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|
400 | vpn::drop_privileges () |
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401 | { |
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402 | if (::conf.change_root) |
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403 | { |
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404 | if (!strcmp (::conf.change_root, "/")) |
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405 | { |
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406 | char dir [L_tmpnam]; |
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407 | if (!tmpnam (dir)) |
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408 | { |
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409 | slog (L_CRIT, _("unable to create anonymous root path.")); |
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410 | return false; |
|
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411 | } |
|
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412 | |
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413 | if (mkdir (dir, 0700)) |
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414 | { |
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415 | slog (L_CRIT, _("unable to crate anonymous root directory.")); |
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416 | return false; |
|
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417 | } |
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418 | |
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419 | if (chdir (dir)) |
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420 | { |
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421 | slog (L_CRIT, _("unable to change to anonymous root directory.")); |
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422 | return false; |
|
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423 | } |
|
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424 | |
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425 | if (rmdir (dir)) |
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426 | slog (L_ERR, _("unable to remove anonymous root directory, continuing.")); |
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427 | } |
|
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428 | else |
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429 | { |
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430 | if (chdir (::conf.change_root)) |
|
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431 | { |
|
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432 | slog (L_CRIT, _("%s: unable to change to specified root directory."), ::conf.change_root); |
|
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433 | return false; |
|
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434 | } |
|
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435 | } |
|
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436 | |
|
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437 | if (chroot (".")) |
|
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438 | { |
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439 | slog (L_CRIT, _("unable to set new root directory.")); |
|
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440 | return false; |
|
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441 | } |
|
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442 | |
|
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443 | if (chdir ("/")) |
|
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444 | { |
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445 | slog (L_CRIT, _("unable to set cwd to new root directory.")); |
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446 | return false; |
|
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447 | } |
|
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448 | } |
|
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449 | |
|
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450 | if (::conf.change_gid) |
|
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451 | if (setgid (::conf.change_gid)) |
|
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452 | { |
|
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453 | slog (L_CRIT, _("unable to change group id to %d."), ::conf.change_gid); |
|
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454 | return false; |
|
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455 | } |
|
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456 | |
|
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457 | if (::conf.change_uid) |
|
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458 | if (setuid (::conf.change_uid)) |
|
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459 | { |
|
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460 | slog (L_CRIT, _("unable to change user id to %d."), ::conf.change_uid); |
|
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461 | return false; |
|
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462 | } |
|
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463 | |
|
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464 | return true; |
|
|
465 | } |
|
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466 | |
|
|
467 | bool |
| 397 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
468 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
| 398 | { |
469 | { |
| 399 | set_tos (ipv4_fd, ipv4_tos, tos); |
470 | set_tos (ipv4_fd, ipv4_tos, tos); |
| 400 | sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
471 | sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
| 401 | |
472 | |
