1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ 2 /* dbus-marshal-validate.h Validation routines for marshaled data 3 * 4 * Copyright (C) 2005 Red Hat, Inc. 5 * 6 * Licensed under the Academic Free License version 2.1 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 * 22 */ 23 24 #ifndef DBUS_MARSHAL_VALIDATE_H 25 #define DBUS_MARSHAL_VALIDATE_H 26 27 /** 28 * @addtogroup DBusMarshal 29 * 30 * @{ 31 */ 32 33 /** 34 * This is used rather than a bool for high visibility 35 */ 36 typedef enum 37 { 38 DBUS_VALIDATION_MODE_WE_TRUST_THIS_DATA_ABSOLUTELY, 39 DBUS_VALIDATION_MODE_DATA_IS_UNTRUSTED 40 } DBusValidationMode; 41 42 /** 43 * This is primarily used in unit testing, so we can verify that each 44 * invalid message is invalid for the expected reasons. Thus we really 45 * want a distinct enum value for every codepath leaving the validator 46 * functions. Enum values are specified manually for ease of debugging 47 * (so you can see the enum value given a printf) 48 */ 49 typedef enum 50 { 51 #define _DBUS_NEGATIVE_VALIDITY_COUNT 4 52 DBUS_VALIDITY_UNKNOWN_OOM_ERROR = -4, /**< can't determine validity due to OOM */ 53 DBUS_INVALID_FOR_UNKNOWN_REASON = -3, 54 DBUS_VALID_BUT_INCOMPLETE = -2, 55 DBUS_VALIDITY_UNKNOWN = -1, 56 DBUS_VALID = 0, /**< the data is valid */ 57 DBUS_INVALID_UNKNOWN_TYPECODE = 1, 58 DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE = 2, 59 DBUS_INVALID_SIGNATURE_TOO_LONG = 3, /* this one is impossible right now since 60 * you can't put a too-long value in a byte 61 */ 62 DBUS_INVALID_EXCEEDED_MAXIMUM_ARRAY_RECURSION = 4, 63 DBUS_INVALID_EXCEEDED_MAXIMUM_STRUCT_RECURSION = 5, 64 DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED = 6, 65 DBUS_INVALID_STRUCT_STARTED_BUT_NOT_ENDED = 7, 66 DBUS_INVALID_STRUCT_HAS_NO_FIELDS = 8, 67 DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL = 9, 68 DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE = 10, 69 DBUS_INVALID_NOT_ENOUGH_DATA = 11, 70 DBUS_INVALID_TOO_MUCH_DATA = 12, /**< trailing junk makes it invalid */ 71 DBUS_INVALID_BAD_BYTE_ORDER = 13, 72 DBUS_INVALID_BAD_PROTOCOL_VERSION = 14, 73 DBUS_INVALID_BAD_MESSAGE_TYPE = 15, 74 DBUS_INVALID_BAD_SERIAL = 16, 75 DBUS_INVALID_INSANE_FIELDS_ARRAY_LENGTH = 17, 76 DBUS_INVALID_INSANE_BODY_LENGTH = 18, 77 DBUS_INVALID_MESSAGE_TOO_LONG = 19, 78 DBUS_INVALID_HEADER_FIELD_CODE = 20, 79 DBUS_INVALID_HEADER_FIELD_HAS_WRONG_TYPE = 21, 80 DBUS_INVALID_USES_LOCAL_INTERFACE = 22, 81 DBUS_INVALID_USES_LOCAL_PATH = 23, 82 DBUS_INVALID_HEADER_FIELD_APPEARS_TWICE = 24, 83 DBUS_INVALID_BAD_DESTINATION = 25, 84 DBUS_INVALID_BAD_INTERFACE = 26, 85 DBUS_INVALID_BAD_MEMBER = 27, 86 DBUS_INVALID_BAD_ERROR_NAME = 28, 87 DBUS_INVALID_BAD_SENDER = 29, 88 DBUS_INVALID_MISSING_PATH = 30, 89 DBUS_INVALID_MISSING_INTERFACE = 31, 90 DBUS_INVALID_MISSING_MEMBER = 32, 91 DBUS_INVALID_MISSING_ERROR_NAME = 33, 92 DBUS_INVALID_MISSING_REPLY_SERIAL = 34, 93 DBUS_INVALID_LENGTH_OUT_OF_BOUNDS = 35, 94 DBUS_INVALID_ARRAY_LENGTH_EXCEEDS_MAXIMUM = 36, 95 DBUS_INVALID_BAD_PATH = 37, 96 DBUS_INVALID_SIGNATURE_LENGTH_OUT_OF_BOUNDS = 38, 97 DBUS_INVALID_BAD_UTF8_IN_STRING = 39, 98 DBUS_INVALID_ARRAY_LENGTH_INCORRECT = 40, 99 DBUS_INVALID_VARIANT_SIGNATURE_LENGTH_OUT_OF_BOUNDS = 41, 100 DBUS_INVALID_VARIANT_SIGNATURE_BAD = 42, 101 DBUS_INVALID_VARIANT_SIGNATURE_EMPTY = 43, 102 DBUS_INVALID_VARIANT_SIGNATURE_SPECIFIES_MULTIPLE_VALUES = 44, 103 DBUS_INVALID_VARIANT_SIGNATURE_MISSING_NUL = 45, 104 DBUS_INVALID_STRING_MISSING_NUL = 46, 105 DBUS_INVALID_SIGNATURE_MISSING_NUL = 47, 106 DBUS_INVALID_EXCEEDED_MAXIMUM_DICT_ENTRY_RECURSION = 48, 107 DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED = 49, 108 DBUS_INVALID_DICT_ENTRY_STARTED_BUT_NOT_ENDED = 50, 109 DBUS_INVALID_DICT_ENTRY_HAS_NO_FIELDS = 51, 110 DBUS_INVALID_DICT_ENTRY_HAS_ONLY_ONE_FIELD = 52, 111 DBUS_INVALID_DICT_ENTRY_HAS_TOO_MANY_FIELDS = 53, 112 DBUS_INVALID_DICT_ENTRY_NOT_INSIDE_ARRAY = 54, 113 DBUS_INVALID_DICT_KEY_MUST_BE_BASIC_TYPE = 55, 114 DBUS_INVALID_MISSING_UNIX_FDS = 56, 115 DBUS_INVALID_NESTED_TOO_DEEPLY = 57, 116 DBUS_VALIDITY_LAST 117 } DBusValidity; 118 119 DBusValidity _dbus_validate_signature_with_reason (const DBusString *type_str, 120 int type_pos, 121 int len); 122 DBusValidity _dbus_validate_body_with_reason (const DBusString *expected_signature, 123 int expected_signature_start, 124 int byte_order, 125 int *bytes_remaining, 126 const DBusString *value_str, 127 int value_pos, 128 int len); 129 130 const char *_dbus_validity_to_error_message (DBusValidity validity); 131 132 dbus_bool_t _dbus_validate_path (const DBusString *str, 133 int start, 134 int len); 135 dbus_bool_t _dbus_validate_interface (const DBusString *str, 136 int start, 137 int len); 138 dbus_bool_t _dbus_validate_member (const DBusString *str, 139 int start, 140 int len); 141 dbus_bool_t _dbus_validate_error_name (const DBusString *str, 142 int start, 143 int len); 144 dbus_bool_t _dbus_validate_bus_name (const DBusString *str, 145 int start, 146 int len); 147 dbus_bool_t _dbus_validate_signature (const DBusString *str, 148 int start, 149 int len); 150 151 #ifdef DBUS_DISABLE_CHECKS 152 153 /* Be sure they don't exist, since we don't want to use them outside of checks 154 * and so we want the compile failure. 155 */ 156 #define DECLARE_DBUS_NAME_CHECK(what) 157 #define DEFINE_DBUS_NAME_CHECK(what) 158 159 #else /* !DBUS_DISABLE_CHECKS */ 160 161 /** A name check is used in _dbus_return_if_fail(), it's not suitable 162 * for validating untrusted data. use _dbus_validate_whatever for that. 163 */ 164 #define DECLARE_DBUS_NAME_CHECK(what) \ 165 dbus_bool_t _dbus_check_is_valid_##what (const char *name) 166 167 /** Define a name check to be used in _dbus_return_if_fail() statements. 168 */ 169 #define DEFINE_DBUS_NAME_CHECK(what) \ 170 dbus_bool_t \ 171 _dbus_check_is_valid_##what (const char *name) \ 172 { \ 173 DBusString str; \ 174 \ 175 if (name == NULL) \ 176 return FALSE; \ 177 \ 178 _dbus_string_init_const (&str, name); \ 179 return _dbus_validate_##what (&str, 0, \ 180 _dbus_string_get_length (&str)); \ 181 } 182 #endif /* !DBUS_DISABLE_CHECKS */ 183 184 /** defines _dbus_check_is_valid_path() */ 185 DECLARE_DBUS_NAME_CHECK(path); 186 /** defines _dbus_check_is_valid_interface() */ 187 DECLARE_DBUS_NAME_CHECK(interface); 188 /** defines _dbus_check_is_valid_member() */ 189 DECLARE_DBUS_NAME_CHECK(member); 190 /** defines _dbus_check_is_valid_error_name() */ 191 DECLARE_DBUS_NAME_CHECK(error_name); 192 /** defines _dbus_check_is_valid_bus_name() */ 193 DECLARE_DBUS_NAME_CHECK(bus_name); 194 /** defines _dbus_check_is_valid_signature() */ 195 DECLARE_DBUS_NAME_CHECK(signature); 196 197 /** @} */ 198 199 #endif /* DBUS_MARSHAL_VALIDATE_H */ 200