Compare reality with what is needed
(self, list)
| 131 | logging.info("Delete rule %s from table %s", r.to_str(True), r.get_table()) |
| 132 | |
| 133 | def compare(self, list): |
| 134 | """ Compare reality with what is needed """ |
| 135 | # PASS 1: Ensure all chains are present |
| 136 | for fw in list: |
| 137 | new_rule = CsNetfilter() |
| 138 | new_rule.parse(fw[2]) |
| 139 | new_rule.set_table(fw[0]) |
| 140 | self.add_chain(new_rule) |
| 141 | |
| 142 | ruleSet = set() |
| 143 | # PASS 2: Create rules |
| 144 | for fw in list: |
| 145 | tupledFw = tuple(fw) |
| 146 | if tupledFw in ruleSet: |
| 147 | logging.debug("Already processed : %s", tupledFw) |
| 148 | continue |
| 149 | |
| 150 | new_rule = CsNetfilter() |
| 151 | new_rule.parse(fw[2]) |
| 152 | new_rule.set_table(fw[0]) |
| 153 | if isinstance(fw[1], int): |
| 154 | new_rule.set_count(fw[1]) |
| 155 | |
| 156 | rule_chain = new_rule.get_chain() |
| 157 | |
| 158 | logging.debug("Checking if the rule already exists: rule=%s table=%s chain=%s", new_rule.get_rule(), new_rule.get_table(), new_rule.get_chain()) |
| 159 | if self.has_rule(new_rule): |
| 160 | logging.debug("Exists: rule=%s table=%s", fw[2], new_rule.get_table()) |
| 161 | else: |
| 162 | # print "Add rule %s in table %s" % ( fw[2], new_rule.get_table()) |
| 163 | logging.info("Add: rule=%s table=%s", fw[2], new_rule.get_table()) |
| 164 | # front means insert instead of append |
| 165 | cpy = fw[2] |
| 166 | if fw[1] == "front": |
| 167 | cpy = cpy.replace('-A', '-I') |
| 168 | if isinstance(fw[1], int): |
| 169 | # if the rule is for ACLs, we want to insert them in order, right before the DROP all |
| 170 | if rule_chain.startswith("ACL_INBOUND") or rule_chain.startswith("ACL_OUTBOUND"): |
| 171 | rule_count = self.chain.get_count(rule_chain) if self.chain.get_count(rule_chain) > 0 else 1 |
| 172 | cpy = cpy.replace("-A %s" % new_rule.get_chain(), '-I %s %s' % (new_rule.get_chain(), rule_count)) |
| 173 | else: |
| 174 | cpy = cpy.replace("-A %s" % new_rule.get_chain(), '-I %s %s' % (new_rule.get_chain(), fw[1])) |
| 175 | ret = CsHelper.execute2("iptables -t %s %s" % (new_rule.get_table(), cpy)) |
| 176 | # There are some issues in this framework causing failures .. like adding a chain without checking it is present causing |
| 177 | # the failures. Also some of the rule like removeFromLoadBalancerRule is deleting rule and deleteLoadBalancerRule |
| 178 | # trying to delete which causes the failure. |
| 179 | # For now raising the log. |
| 180 | # TODO: Need to fix in the framework. |
| 181 | if ret.returncode != 0: |
| 182 | error = ret.communicate()[0].decode() |
| 183 | logging.debug("iptables command got failed ... continuing") |
| 184 | ruleSet.add(tupledFw) |
| 185 | self.chain.add_rule(rule_chain) |
| 186 | self.del_standard() |
| 187 | self.get_unseen() |
| 188 | |
| 189 | def add_chain(self, rule): |
| 190 | """ Add the given chain if it is not already present """ |
no test coverage detected