1 # Copyright 2015-2016, Tresys Technology, LLC 2 # 3 # This file is part of SETools. 4 # 5 # SETools is free software: you can redistribute it and/or modify 6 # it under the terms of the GNU Lesser General Public License as 7 # published by the Free Software Foundation, either version 2.1 of 8 # the License, or (at your option) any later version. 9 # 10 # SETools is distributed in the hope that it will be useful, 11 # but WITHOUT ANY WARRANTY; without even the implied warranty of 12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 # GNU Lesser General Public License for more details. 14 # 15 # You should have received a copy of the GNU Lesser General Public 16 # License along with SETools. If not, see 17 # <http://www.gnu.org/licenses/>. 18 # 19 from ..exception import SEToolsException 20 21 # 22 # Policyrep base exception 23 # 24 25 26 class PolicyrepException(SEToolsException): 27 28 """Base class for all policyrep exceptions.""" 29 pass 30 31 32 # 33 # General Policyrep exceptions 34 # 35 36 37 class InvalidPolicy(SyntaxError, PolicyrepException): 38 39 """Exception for invalid policy.""" 40 pass 41 42 43 class MLSDisabled(PolicyrepException): 44 45 """ 46 Exception when MLS is disabled. 47 """ 48 pass 49 50 51 # 52 # Invalid component exceptions 53 # 54 class InvalidSymbol(ValueError, PolicyrepException): 55 56 """ 57 Base class for invalid symbols. Typically this is attempting to 58 look up an object in the policy, but it does not exist. 59 """ 60 pass 61 62 63 class InvalidBoolean(InvalidSymbol): 64 65 """Exception for invalid Booleans.""" 66 pass 67 68 69 class InvalidCategory(InvalidSymbol): 70 71 """Exception for invalid MLS categories.""" 72 pass 73 74 75 class InvalidClass(InvalidSymbol): 76 77 """Exception for invalid object classes.""" 78 pass 79 80 81 class InvalidCommon(InvalidSymbol): 82 83 """Exception for invalid common permission sets.""" 84 pass 85 86 87 class InvalidInitialSid(InvalidSymbol): 88 89 """Exception for invalid initial sids.""" 90 pass 91 92 93 class InvalidLevel(InvalidSymbol): 94 95 """ 96 Exception for an invalid level. 97 """ 98 pass 99 100 101 class InvalidLevelDecl(InvalidSymbol): 102 103 """ 104 Exception for an invalid level declaration. 105 """ 106 pass 107 108 109 class InvalidRange(InvalidSymbol): 110 111 """ 112 Exception for an invalid range. 113 """ 114 pass 115 116 117 class InvalidRole(InvalidSymbol): 118 119 """Exception for invalid roles.""" 120 pass 121 122 123 class InvalidSensitivity(InvalidSymbol): 124 125 """ 126 Exception for an invalid sensitivity. 127 """ 128 pass 129 130 131 class InvalidType(InvalidSymbol): 132 133 """Exception for invalid types and attributes.""" 134 pass 135 136 137 class InvalidUser(InvalidSymbol): 138 139 """Exception for invalid users.""" 140 pass 141 142 # 143 # Rule type exceptions 144 # 145 146 147 class InvalidRuleType(InvalidSymbol): 148 149 """Exception for invalid rule types.""" 150 pass 151 152 153 class InvalidBoundsType(InvalidSymbol): 154 155 """Exception for invalid *bounds rule types.""" 156 pass 157 158 159 class InvalidConstraintType(InvalidSymbol): 160 161 """Exception for invalid constraint types.""" 162 pass 163 164 165 class InvalidDefaultType(InvalidRuleType): 166 167 """Exception for invalid default_* types.""" 168 pass 169 170 171 class InvalidFSUseType(InvalidRuleType): 172 173 """Exception for invalid fs_use_* types.""" 174 pass 175 176 177 class InvalidMLSRuleType(InvalidRuleType): 178 179 """Exception for invalid MLS rule types.""" 180 pass 181 182 183 class InvalidRBACRuleType(InvalidRuleType): 184 185 """Exception for invalid RBAC rule types.""" 186 pass 187 188 189 class InvalidTERuleType(InvalidRuleType): 190 191 """Exception for invalid TE rule types.""" 192 pass 193 194 195 # 196 # Object use errors 197 # 198 class SymbolUseError(AttributeError, PolicyrepException): 199 200 """ 201 Base class for incorrectly using an object. Typically this is 202 for classes with strong similarities, but with slight variances in 203 functionality, e.g. allow vs type_transition rules. 204 """ 205 pass 206 207 208 class RuleUseError(SymbolUseError): 209 210 """ 211 Base class for incorrect parameters for a rule. For 212 example, trying to get the permissions of a rule that has no 213 permissions. 214 """ 215 pass 216 217 218 class ConstraintUseError(SymbolUseError): 219 220 """Exception when getting permissions from a validatetrans.""" 221 pass 222 223 224 class NoStatement(SymbolUseError): 225 226 """ 227 Exception for objects that have no inherent statement, such 228 as conditional expressions and MLS ranges. 229 """ 230 pass 231 232 233 # 234 # Default rule exceptions 235 # 236 class InvalidDefaultValue(InvalidSymbol): 237 238 """Exception for invalid default (not source/target)""" 239 pass 240 241 242 class InvalidDefaultRange(InvalidSymbol): 243 244 """Exception for invalid default range""" 245 pass 246 247 248 # 249 # Other exceptions 250 # 251 class NoCommon(AttributeError, PolicyrepException): 252 253 """ 254 Exception when a class does not inherit a common permission set. 255 """ 256 pass 257 258 259 class NoDefaults(InvalidSymbol): 260 261 """Exception for classes that have no default_* statements.""" 262 pass 263 264 265 class RuleNotConditional(AttributeError, PolicyrepException): 266 267 """ 268 Exception when getting the conditional expression for rules 269 that are unconditional (not conditional). 270 """ 271 pass 272 273 274 class TERuleNoFilename(AttributeError, PolicyrepException): 275 276 """ 277 Exception when getting the file name of a 278 type_transition rule that has no file name. 279 """ 280 pass 281
