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00024 #include "dbus-internals.h"
00025 #include "dbus-marshal-validate.h"
00026 #include "dbus-marshal-recursive.h"
00027 #include "dbus-marshal-basic.h"
00028 #include "dbus-signature.h"
00029 #include "dbus-string.h"
00030
00049 DBusValidity
00050 _dbus_validate_signature_with_reason (const DBusString *type_str,
00051 int type_pos,
00052 int len)
00053 {
00054 const unsigned char *p;
00055 const unsigned char *end;
00056 int last;
00057 int struct_depth;
00058 int array_depth;
00059 int dict_entry_depth;
00060 DBusValidity result;
00061
00062 int element_count;
00063 DBusList *element_count_stack;
00064
00065 result = DBUS_VALID;
00066 element_count_stack = NULL;
00067
00068 if (!_dbus_list_append (&element_count_stack, _DBUS_INT_TO_POINTER (0)))
00069 {
00070 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
00071 goto out;
00072 }
00073
00074 _dbus_assert (type_str != NULL);
00075 _dbus_assert (type_pos < _DBUS_INT32_MAX - len);
00076 _dbus_assert (len >= 0);
00077 _dbus_assert (type_pos >= 0);
00078
00079 if (len > DBUS_MAXIMUM_SIGNATURE_LENGTH)
00080 {
00081 result = DBUS_INVALID_SIGNATURE_TOO_LONG;
00082 goto out;
00083 }
00084
00085 p = _dbus_string_get_const_data_len (type_str, type_pos, 0);
00086
00087 end = _dbus_string_get_const_data_len (type_str, type_pos + len, 0);
00088 struct_depth = 0;
00089 array_depth = 0;
00090 dict_entry_depth = 0;
00091 last = DBUS_TYPE_INVALID;
00092
00093 while (p != end)
00094 {
00095 switch (*p)
00096 {
00097 case DBUS_TYPE_BYTE:
00098 case DBUS_TYPE_BOOLEAN:
00099 case DBUS_TYPE_INT16:
00100 case DBUS_TYPE_UINT16:
00101 case DBUS_TYPE_INT32:
00102 case DBUS_TYPE_UINT32:
00103 case DBUS_TYPE_INT64:
00104 case DBUS_TYPE_UINT64:
00105 case DBUS_TYPE_DOUBLE:
00106 case DBUS_TYPE_STRING:
00107 case DBUS_TYPE_OBJECT_PATH:
00108 case DBUS_TYPE_SIGNATURE:
00109 case DBUS_TYPE_VARIANT:
00110 break;
00111
00112 case DBUS_TYPE_ARRAY:
00113 array_depth += 1;
00114 if (array_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
00115 {
00116 result = DBUS_INVALID_EXCEEDED_MAXIMUM_ARRAY_RECURSION;
00117 goto out;
00118 }
00119 break;
00120
00121 case DBUS_STRUCT_BEGIN_CHAR:
00122 struct_depth += 1;
00123
00124 if (struct_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
00125 {
00126 result = DBUS_INVALID_EXCEEDED_MAXIMUM_STRUCT_RECURSION;
00127 goto out;
00128 }
00129
00130 if (!_dbus_list_append (&element_count_stack,
00131 _DBUS_INT_TO_POINTER (0)))
00132 {
00133 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
00134 goto out;
00135 }
00136
00137 break;
00138
00139 case DBUS_STRUCT_END_CHAR:
00140 if (struct_depth == 0)
00141 {
00142 result = DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED;
00143 goto out;
00144 }
00145
00146 if (last == DBUS_STRUCT_BEGIN_CHAR)
00147 {
00148 result = DBUS_INVALID_STRUCT_HAS_NO_FIELDS;
00149 goto out;
00150 }
00151
00152 _dbus_list_pop_last (&element_count_stack);
00153
00154 struct_depth -= 1;
00155 break;
00156
00157 case DBUS_DICT_ENTRY_BEGIN_CHAR:
00158 if (last != DBUS_TYPE_ARRAY)
00159 {
00160 result = DBUS_INVALID_DICT_ENTRY_NOT_INSIDE_ARRAY;
00161 goto out;
00162 }
00163
00164 dict_entry_depth += 1;
00165
00166 if (dict_entry_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
00167 {
00168 result = DBUS_INVALID_EXCEEDED_MAXIMUM_DICT_ENTRY_RECURSION;
00169 goto out;
00170 }
00171
00172 if (!_dbus_list_append (&element_count_stack,
00173 _DBUS_INT_TO_POINTER (0)))
00174 {
00175 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
00176 goto out;
00177 }
00178
00179 break;
00180
00181 case DBUS_DICT_ENTRY_END_CHAR:
00182 if (dict_entry_depth == 0)
00183 {
00184 result = DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED;
00185 goto out;
00186 }
00187
00188 dict_entry_depth -= 1;
00189
00190 element_count =
00191 _DBUS_POINTER_TO_INT (_dbus_list_pop_last (&element_count_stack));
00192
00193 if (element_count != 2)
00194 {
00195 if (element_count == 0)
00196 result = DBUS_INVALID_DICT_ENTRY_HAS_NO_FIELDS;
00197 else if (element_count == 1)
00198 result = DBUS_INVALID_DICT_ENTRY_HAS_ONLY_ONE_FIELD;
00199 else
00200 result = DBUS_INVALID_DICT_ENTRY_HAS_TOO_MANY_FIELDS;
00201
00202 goto out;
00203 }
00204 break;
00205
00206 case DBUS_TYPE_STRUCT:
00207 case DBUS_TYPE_DICT_ENTRY:
00208 default:
00209 result = DBUS_INVALID_UNKNOWN_TYPECODE;
00210 goto out;
00211 }
00212
00213 if (*p != DBUS_TYPE_ARRAY &&
00214 *p != DBUS_DICT_ENTRY_BEGIN_CHAR &&
00215 *p != DBUS_STRUCT_BEGIN_CHAR)
00216 {
00217 element_count =
00218 _DBUS_POINTER_TO_INT (_dbus_list_pop_last (&element_count_stack));
00219
00220 ++element_count;
00221
00222 if (!_dbus_list_append (&element_count_stack,
00223 _DBUS_INT_TO_POINTER (element_count)))
00224 {
00225 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
00226 goto out;
00227 }
00228 }
00229
00230 if (array_depth > 0)
00231 {
00232 if (*p == DBUS_TYPE_ARRAY && p != end)
00233 {
00234 const char *p1;
00235 p1 = p + 1;
00236 if (*p1 == DBUS_STRUCT_END_CHAR ||
00237 *p1 == DBUS_DICT_ENTRY_END_CHAR)
00238 {
00239 result = DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE;
00240 goto out;
00241 }
00242 }
00243 else
00244 {
00245 array_depth = 0;
00246 }
00247 }
00248
00249 if (last == DBUS_DICT_ENTRY_BEGIN_CHAR)
00250 {
00251 if (!(_dbus_type_is_valid (*p) && dbus_type_is_basic (*p)))
00252 {
00253 result = DBUS_INVALID_DICT_KEY_MUST_BE_BASIC_TYPE;
00254 goto out;
00255 }
00256 }
00257
00258 last = *p;
00259 ++p;
00260 }
00261
00262
00263 if (array_depth > 0)
00264 {
00265 result = DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE;
00266 goto out;
00267 }
00268
00269 if (struct_depth > 0)
00270 {
00271 result = DBUS_INVALID_STRUCT_STARTED_BUT_NOT_ENDED;
00272 goto out;
00273 }
00274
00275 if (dict_entry_depth > 0)
00276 {
00277 result = DBUS_INVALID_DICT_ENTRY_STARTED_BUT_NOT_ENDED;
00278 goto out;
00279 }
00280
00281 _dbus_assert (last != DBUS_TYPE_ARRAY);
00282 _dbus_assert (last != DBUS_STRUCT_BEGIN_CHAR);
00283 _dbus_assert (last != DBUS_DICT_ENTRY_BEGIN_CHAR);
00284
00285 result = DBUS_VALID;
00286
00287 out:
00288 _dbus_list_clear (&element_count_stack);
00289 return result;
00290 }
00291
00292
00293
00294
00295 static DBusValidity
00296 validate_body_helper (DBusTypeReader *reader,
00297 int byte_order,
00298 dbus_bool_t walk_reader_to_end,
00299 int total_depth,
00300 const unsigned char *p,
00301 const unsigned char *end,
00302 const unsigned char **new_p)
00303 {
00304 int current_type;
00305
00306
00307
00308
00309
00310
00311 if (total_depth > (DBUS_MAXIMUM_TYPE_RECURSION_DEPTH * 2))
00312 {
00313 return DBUS_INVALID_NESTED_TOO_DEEPLY;
00314 }
00315
00316 while ((current_type = _dbus_type_reader_get_current_type (reader)) != DBUS_TYPE_INVALID)
00317 {
00318 const unsigned char *a;
00319 int alignment;
00320
00321 #if 0
00322 _dbus_verbose (" validating value of type %s type reader %p type_pos %d p %p end %p %d remain\n",
00323 _dbus_type_to_string (current_type), reader, reader->type_pos, p, end,
00324 (int) (end - p));
00325 #endif
00326
00327
00328 if (p == end)
00329 return DBUS_INVALID_NOT_ENOUGH_DATA;
00330
00331 switch (current_type)
00332 {
00333 case DBUS_TYPE_BYTE:
00334 ++p;
00335 break;
00336
00337 case DBUS_TYPE_BOOLEAN:
00338 case DBUS_TYPE_INT16:
00339 case DBUS_TYPE_UINT16:
00340 case DBUS_TYPE_INT32:
00341 case DBUS_TYPE_UINT32:
00342 case DBUS_TYPE_INT64:
00343 case DBUS_TYPE_UINT64:
00344 case DBUS_TYPE_DOUBLE:
00345 alignment = _dbus_type_get_alignment (current_type);
00346 a = _DBUS_ALIGN_ADDRESS (p, alignment);
00347 if (a >= end)
00348 return DBUS_INVALID_NOT_ENOUGH_DATA;
00349 while (p != a)
00350 {
00351 if (*p != '\0')
00352 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
00353 ++p;
00354 }
00355
00356 if (current_type == DBUS_TYPE_BOOLEAN)
00357 {
00358 dbus_uint32_t v = _dbus_unpack_uint32 (byte_order,
00359 p);
00360 if (!(v == 0 || v == 1))
00361 return DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE;
00362 }
00363
00364 p += alignment;
00365 break;
00366
00367 case DBUS_TYPE_ARRAY:
00368 case DBUS_TYPE_STRING:
00369 case DBUS_TYPE_OBJECT_PATH:
00370 {
00371 dbus_uint32_t claimed_len;
00372
00373 a = _DBUS_ALIGN_ADDRESS (p, 4);
00374 if (a + 4 > end)
00375 return DBUS_INVALID_NOT_ENOUGH_DATA;
00376 while (p != a)
00377 {
00378 if (*p != '\0')
00379 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
00380 ++p;
00381 }
00382
00383 claimed_len = _dbus_unpack_uint32 (byte_order, p);
00384 p += 4;
00385
00386
00387 _dbus_assert (p <= end);
00388
00389 if (current_type == DBUS_TYPE_ARRAY)
00390 {
00391 int array_elem_type = _dbus_type_reader_get_element_type (reader);
00392 alignment = _dbus_type_get_alignment (array_elem_type);
00393 p = _DBUS_ALIGN_ADDRESS (p, alignment);
00394 }
00395
00396 if (claimed_len > (unsigned long) (end - p))
00397 return DBUS_INVALID_LENGTH_OUT_OF_BOUNDS;
00398
00399 if (current_type == DBUS_TYPE_OBJECT_PATH)
00400 {
00401 DBusString str;
00402 _dbus_string_init_const_len (&str, p, claimed_len);
00403 if (!_dbus_validate_path (&str, 0,
00404 _dbus_string_get_length (&str)))
00405 return DBUS_INVALID_BAD_PATH;
00406
00407 p += claimed_len;
00408 }
00409 else if (current_type == DBUS_TYPE_STRING)
00410 {
00411 DBusString str;
00412 _dbus_string_init_const_len (&str, p, claimed_len);
00413 if (!_dbus_string_validate_utf8 (&str, 0,
00414 _dbus_string_get_length (&str)))
00415 return DBUS_INVALID_BAD_UTF8_IN_STRING;
00416
00417 p += claimed_len;
00418 }
00419 else if (current_type == DBUS_TYPE_ARRAY && claimed_len > 0)
00420 {
00421 DBusTypeReader sub;
00422 DBusValidity validity;
00423 const unsigned char *array_end;
00424
00425 if (claimed_len > DBUS_MAXIMUM_ARRAY_LENGTH)
00426 return DBUS_INVALID_ARRAY_LENGTH_EXCEEDS_MAXIMUM;
00427
00428
00429
00430
00431
00432 _dbus_type_reader_recurse (reader, &sub);
00433
00434 array_end = p + claimed_len;
00435
00436 while (p < array_end)
00437 {
00438
00439
00440
00441
00442
00443 validity = validate_body_helper (&sub, byte_order, FALSE, total_depth + 1, p, end, &p);
00444 if (validity != DBUS_VALID)
00445 return validity;
00446 }
00447
00448 if (p != array_end)
00449 return DBUS_INVALID_ARRAY_LENGTH_INCORRECT;
00450 }
00451
00452
00453 if (current_type != DBUS_TYPE_ARRAY)
00454 {
00455 if (p == end)
00456 return DBUS_INVALID_NOT_ENOUGH_DATA;
00457
00458 if (*p != '\0')
00459 return DBUS_INVALID_STRING_MISSING_NUL;
00460 ++p;
00461 }
00462 }
00463 break;
00464
00465 case DBUS_TYPE_SIGNATURE:
00466 {
00467 dbus_uint32_t claimed_len;
00468 DBusString str;
00469 DBusValidity validity;
00470
00471 claimed_len = *p;
00472 ++p;
00473
00474
00475 if (claimed_len + 1 > (unsigned long) (end - p))
00476 return DBUS_INVALID_SIGNATURE_LENGTH_OUT_OF_BOUNDS;
00477
00478 _dbus_string_init_const_len (&str, p, claimed_len);
00479 validity =
00480 _dbus_validate_signature_with_reason (&str, 0,
00481 _dbus_string_get_length (&str));
00482
00483 if (validity != DBUS_VALID)
00484 return validity;
00485
00486 p += claimed_len;
00487
00488 _dbus_assert (p < end);
00489 if (*p != DBUS_TYPE_INVALID)
00490 return DBUS_INVALID_SIGNATURE_MISSING_NUL;
00491
00492 ++p;
00493
00494 _dbus_verbose ("p = %p end = %p claimed_len %u\n", p, end, claimed_len);
00495 }
00496 break;
00497
00498 case DBUS_TYPE_VARIANT:
00499 {
00500
00501
00502
00503
00504
00505
00506
00507 dbus_uint32_t claimed_len;
00508 DBusString sig;
00509 DBusTypeReader sub;
00510 DBusValidity validity;
00511 int contained_alignment;
00512 int contained_type;
00513 DBusValidity reason;
00514
00515 claimed_len = *p;
00516 ++p;
00517
00518
00519 if (claimed_len + 1 > (unsigned long) (end - p))
00520 return DBUS_INVALID_VARIANT_SIGNATURE_LENGTH_OUT_OF_BOUNDS;
00521
00522 _dbus_string_init_const_len (&sig, p, claimed_len);
00523 reason = _dbus_validate_signature_with_reason (&sig, 0,
00524 _dbus_string_get_length (&sig));
00525 if (!(reason == DBUS_VALID))
00526 {
00527 if (reason == DBUS_VALIDITY_UNKNOWN_OOM_ERROR)
00528 return reason;
00529 else
00530 return DBUS_INVALID_VARIANT_SIGNATURE_BAD;
00531 }
00532
00533 p += claimed_len;
00534
00535 if (*p != DBUS_TYPE_INVALID)
00536 return DBUS_INVALID_VARIANT_SIGNATURE_MISSING_NUL;
00537 ++p;
00538
00539 contained_type = _dbus_first_type_in_signature (&sig, 0);
00540 if (contained_type == DBUS_TYPE_INVALID)
00541 return DBUS_INVALID_VARIANT_SIGNATURE_EMPTY;
00542
00543 contained_alignment = _dbus_type_get_alignment (contained_type);
00544
00545 a = _DBUS_ALIGN_ADDRESS (p, contained_alignment);
00546 if (a > end)
00547 return DBUS_INVALID_NOT_ENOUGH_DATA;
00548 while (p != a)
00549 {
00550 if (*p != '\0')
00551 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
00552 ++p;
00553 }
00554
00555 _dbus_type_reader_init_types_only (&sub, &sig, 0);
00556
00557 _dbus_assert (_dbus_type_reader_get_current_type (&sub) != DBUS_TYPE_INVALID);
00558
00559 validity = validate_body_helper (&sub, byte_order, FALSE,
00560 total_depth + 1,
00561 p, end, &p);
00562 if (validity != DBUS_VALID)
00563 return validity;
00564
00565 if (_dbus_type_reader_next (&sub))
00566 return DBUS_INVALID_VARIANT_SIGNATURE_SPECIFIES_MULTIPLE_VALUES;
00567
00568 _dbus_assert (_dbus_type_reader_get_current_type (&sub) == DBUS_TYPE_INVALID);
00569 }
00570 break;
00571
00572 case DBUS_TYPE_DICT_ENTRY:
00573 case DBUS_TYPE_STRUCT:
00574 {
00575 DBusTypeReader sub;
00576 DBusValidity validity;
00577
00578 a = _DBUS_ALIGN_ADDRESS (p, 8);
00579 if (a > end)
00580 return DBUS_INVALID_NOT_ENOUGH_DATA;
00581 while (p != a)
00582 {
00583 if (*p != '\0')
00584 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
00585 ++p;
00586 }
00587
00588 _dbus_type_reader_recurse (reader, &sub);
00589
00590 validity = validate_body_helper (&sub, byte_order, TRUE,
00591 total_depth + 1,
00592 p, end, &p);
00593 if (validity != DBUS_VALID)
00594 return validity;
00595 }
00596 break;
00597
00598 default:
00599 _dbus_assert_not_reached ("invalid typecode in supposedly-validated signature");
00600 break;
00601 }
00602
00603 #if 0
00604 _dbus_verbose (" validated value of type %s type reader %p type_pos %d p %p end %p %d remain\n",
00605 _dbus_type_to_string (current_type), reader, reader->type_pos, p, end,
00606 (int) (end - p));
00607 #endif
00608
00609 if (p > end)
00610 {
00611 _dbus_verbose ("not enough data!!! p = %p end = %p end-p = %d\n",
00612 p, end, (int) (end - p));
00613 return DBUS_INVALID_NOT_ENOUGH_DATA;
00614 }
00615
00616 if (walk_reader_to_end)
00617 _dbus_type_reader_next (reader);
00618 else
00619 break;
00620 }
00621
00622 if (new_p)
00623 *new_p = p;
00624
00625 return DBUS_VALID;
00626 }
00627
00648 DBusValidity
00649 _dbus_validate_body_with_reason (const DBusString *expected_signature,
00650 int expected_signature_start,
00651 int byte_order,
00652 int *bytes_remaining,
00653 const DBusString *value_str,
00654 int value_pos,
00655 int len)
00656 {
00657 DBusTypeReader reader;
00658 const unsigned char *p;
00659 const unsigned char *end;
00660 DBusValidity validity;
00661
00662 _dbus_assert (len >= 0);
00663 _dbus_assert (value_pos >= 0);
00664 _dbus_assert (value_pos <= _dbus_string_get_length (value_str) - len);
00665
00666 _dbus_verbose ("validating body from pos %d len %d sig '%s'\n",
00667 value_pos, len, _dbus_string_get_const_data_len (expected_signature,
00668 expected_signature_start,
00669 0));
00670
00671 _dbus_type_reader_init_types_only (&reader,
00672 expected_signature, expected_signature_start);
00673
00674 p = _dbus_string_get_const_data_len (value_str, value_pos, len);
00675 end = p + len;
00676
00677 validity = validate_body_helper (&reader, byte_order, TRUE, 0, p, end, &p);
00678 if (validity != DBUS_VALID)
00679 return validity;
00680
00681 if (bytes_remaining)
00682 {
00683 *bytes_remaining = end - p;
00684 return DBUS_VALID;
00685 }
00686 else if (p < end)
00687 return DBUS_INVALID_TOO_MUCH_DATA;
00688 else
00689 {
00690 _dbus_assert (p == end);
00691 return DBUS_VALID;
00692 }
00693 }
00694
00699 #define VALID_INITIAL_NAME_CHARACTER(c) \
00700 ( ((c) >= 'A' && (c) <= 'Z') || \
00701 ((c) >= 'a' && (c) <= 'z') || \
00702 ((c) == '_') )
00703
00708 #define VALID_NAME_CHARACTER(c) \
00709 ( ((c) >= '0' && (c) <= '9') || \
00710 ((c) >= 'A' && (c) <= 'Z') || \
00711 ((c) >= 'a' && (c) <= 'z') || \
00712 ((c) == '_') )
00713
00730 dbus_bool_t
00731 _dbus_validate_path (const DBusString *str,
00732 int start,
00733 int len)
00734 {
00735 const unsigned char *s;
00736 const unsigned char *end;
00737 const unsigned char *last_slash;
00738
00739 _dbus_assert (start >= 0);
00740 _dbus_assert (len >= 0);
00741 _dbus_assert (start <= _dbus_string_get_length (str));
00742
00743 if (len > _dbus_string_get_length (str) - start)
00744 return FALSE;
00745
00746 if (len == 0)
00747 return FALSE;
00748
00749 s = _dbus_string_get_const_data (str) + start;
00750 end = s + len;
00751
00752 if (*s != '/')
00753 return FALSE;
00754 last_slash = s;
00755 ++s;
00756
00757 while (s != end)
00758 {
00759 if (*s == '/')
00760 {
00761 if ((s - last_slash) < 2)
00762 return FALSE;
00763
00764 last_slash = s;
00765 }
00766 else
00767 {
00768 if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
00769 return FALSE;
00770 }
00771
00772 ++s;
00773 }
00774
00775 if ((end - last_slash) < 2 &&
00776 len > 1)
00777 return FALSE;
00778
00779 return TRUE;
00780 }
00781
00795 dbus_bool_t
00796 _dbus_validate_interface (const DBusString *str,
00797 int start,
00798 int len)
00799 {
00800 const unsigned char *s;
00801 const unsigned char *end;
00802 const unsigned char *iface;
00803 const unsigned char *last_dot;
00804
00805 _dbus_assert (start >= 0);
00806 _dbus_assert (len >= 0);
00807 _dbus_assert (start <= _dbus_string_get_length (str));
00808
00809 if (len > _dbus_string_get_length (str) - start)
00810 return FALSE;
00811
00812 if (len > DBUS_MAXIMUM_NAME_LENGTH)
00813 return FALSE;
00814
00815 if (len == 0)
00816 return FALSE;
00817
00818 last_dot = NULL;
00819 iface = _dbus_string_get_const_data (str) + start;
00820 end = iface + len;
00821 s = iface;
00822
00823
00824
00825
00826 if (_DBUS_UNLIKELY (*s == '.'))
00827 return FALSE;
00828 else if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*s)))
00829 return FALSE;
00830 else
00831 ++s;
00832
00833 while (s != end)
00834 {
00835 if (*s == '.')
00836 {
00837 if (_DBUS_UNLIKELY ((s + 1) == end))
00838 return FALSE;
00839 else if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*(s + 1))))
00840 return FALSE;
00841 last_dot = s;
00842 ++s;
00843 }
00844 else if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
00845 {
00846 return FALSE;
00847 }
00848
00849 ++s;
00850 }
00851
00852 if (_DBUS_UNLIKELY (last_dot == NULL))
00853 return FALSE;
00854
00855 return TRUE;
00856 }
00857
00871 dbus_bool_t
00872 _dbus_validate_member (const DBusString *str,
00873 int start,
00874 int len)
00875 {
00876 const unsigned char *s;
00877 const unsigned char *end;
00878 const unsigned char *member;
00879
00880 _dbus_assert (start >= 0);
00881 _dbus_assert (len >= 0);
00882 _dbus_assert (start <= _dbus_string_get_length (str));
00883
00884 if (len > _dbus_string_get_length (str) - start)
00885 return FALSE;
00886
00887 if (len > DBUS_MAXIMUM_NAME_LENGTH)
00888 return FALSE;
00889
00890 if (len == 0)
00891 return FALSE;
00892
00893 member = _dbus_string_get_const_data (str) + start;
00894 end = member + len;
00895 s = member;
00896
00897
00898
00899
00900
00901 if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*s)))
00902 return FALSE;
00903 else
00904 ++s;
00905
00906 while (s != end)
00907 {
00908 if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
00909 {
00910 return FALSE;
00911 }
00912
00913 ++s;
00914 }
00915
00916 return TRUE;
00917 }
00918
00932 dbus_bool_t
00933 _dbus_validate_error_name (const DBusString *str,
00934 int start,
00935 int len)
00936 {
00937
00938 return _dbus_validate_interface (str, start, len);
00939 }
00940
00945 #define VALID_INITIAL_BUS_NAME_CHARACTER(c) \
00946 ( ((c) >= 'A' && (c) <= 'Z') || \
00947 ((c) >= 'a' && (c) <= 'z') || \
00948 ((c) == '_') || ((c) == '-'))
00949
00954 #define VALID_BUS_NAME_CHARACTER(c) \
00955 ( ((c) >= '0' && (c) <= '9') || \
00956 ((c) >= 'A' && (c) <= 'Z') || \
00957 ((c) >= 'a' && (c) <= 'z') || \
00958 ((c) == '_') || ((c) == '-'))
00959
00973 dbus_bool_t
00974 _dbus_validate_bus_name (const DBusString *str,
00975 int start,
00976 int len)
00977 {
00978 const unsigned char *s;
00979 const unsigned char *end;
00980 const unsigned char *iface;
00981 const unsigned char *last_dot;
00982
00983 _dbus_assert (start >= 0);
00984 _dbus_assert (len >= 0);
00985 _dbus_assert (start <= _dbus_string_get_length (str));
00986
00987 if (len > _dbus_string_get_length (str) - start)
00988 return FALSE;
00989
00990 if (len > DBUS_MAXIMUM_NAME_LENGTH)
00991 return FALSE;
00992
00993 if (len == 0)
00994 return FALSE;
00995
00996 last_dot = NULL;
00997 iface = _dbus_string_get_const_data (str) + start;
00998 end = iface + len;
00999 s = iface;
01000
01001
01002
01003
01004 if (*s == ':')
01005 {
01006
01007 ++s;
01008 while (s != end)
01009 {
01010 if (*s == '.')
01011 {
01012 if (_DBUS_UNLIKELY ((s + 1) == end))
01013 return FALSE;
01014 if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*(s + 1))))
01015 return FALSE;
01016 ++s;
01017 }
01018 else if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*s)))
01019 {
01020 return FALSE;
01021 }
01022
01023 ++s;
01024 }
01025
01026 return TRUE;
01027 }
01028 else if (_DBUS_UNLIKELY (*s == '.'))
01029 return FALSE;
01030 else if (_DBUS_UNLIKELY (!VALID_INITIAL_BUS_NAME_CHARACTER (*s)))
01031 return FALSE;
01032 else
01033 ++s;
01034
01035 while (s != end)
01036 {
01037 if (*s == '.')
01038 {
01039 if (_DBUS_UNLIKELY ((s + 1) == end))
01040 return FALSE;
01041 else if (_DBUS_UNLIKELY (!VALID_INITIAL_BUS_NAME_CHARACTER (*(s + 1))))
01042 return FALSE;
01043 last_dot = s;
01044 ++s;
01045 }
01046 else if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*s)))
01047 {
01048 return FALSE;
01049 }
01050
01051 ++s;
01052 }
01053
01054 if (_DBUS_UNLIKELY (last_dot == NULL))
01055 return FALSE;
01056
01057 return TRUE;
01058 }
01059
01072 dbus_bool_t
01073 _dbus_validate_signature (const DBusString *str,
01074 int start,
01075 int len)
01076 {
01077 _dbus_assert (start >= 0);
01078 _dbus_assert (start <= _dbus_string_get_length (str));
01079 _dbus_assert (len >= 0);
01080
01081 if (len > _dbus_string_get_length (str) - start)
01082 return FALSE;
01083
01084 return _dbus_validate_signature_with_reason (str, start, len) == DBUS_VALID;
01085 }
01086
01088 DEFINE_DBUS_NAME_CHECK(path)
01090 DEFINE_DBUS_NAME_CHECK(interface)
01092 DEFINE_DBUS_NAME_CHECK(member)
01094 DEFINE_DBUS_NAME_CHECK(error_name)
01096 DEFINE_DBUS_NAME_CHECK(bus_name)
01098 DEFINE_DBUS_NAME_CHECK(signature)
01099
01102