JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <stdlib.h> |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 18 | #include <fcntl.h> |
| 19 | #include <string.h> |
| 20 | |
| 21 | #include <sys/socket.h> |
| 22 | #include <sys/stat.h> |
| 23 | #include <sys/types.h> |
| 24 | #include <sys/wait.h> |
| 25 | |
| 26 | #include <linux/netlink.h> |
| 27 | #include <linux/rtnetlink.h> |
| 28 | #include <linux/pkt_sched.h> |
| 29 | |
| 30 | #define LOG_TAG "BandwidthController" |
| 31 | #include <cutils/log.h> |
| 32 | #include <cutils/properties.h> |
| 33 | |
| 34 | extern "C" int logwrap(int argc, const char **argv, int background); |
| 35 | |
| 36 | #include "BandwidthController.h" |
| 37 | |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 38 | const int BandwidthController::MAX_CMD_LEN = 1024; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 39 | const int BandwidthController::MAX_IFACENAME_LEN = 64; |
| 40 | const int BandwidthController::MAX_CMD_ARGS = 32; |
| 41 | const char BandwidthController::IPTABLES_PATH[] = "/system/bin/iptables"; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 42 | const char BandwidthController::IP6TABLES_PATH[] = "/system/bin/ip6tables"; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 43 | |
| 44 | /** |
| 45 | * Some comments about the rules: |
| 46 | * * Ordering |
| 47 | * - when an interface is marked as costly it should be INSERTED into the INPUT/OUTPUT chains. |
| 48 | * E.g. "-I INPUT -i rmnet0 --goto costly" |
| 49 | * - quota'd rules in the costly chain should be before penalty_box lookups. |
| 50 | * |
| 51 | * * global quota vs per interface quota |
| 52 | * - global quota for all costly interfaces uses a single costly chain: |
| 53 | * . initial rules |
| 54 | * iptables -N costly |
| 55 | * iptables -I INPUT -i iface0 --goto costly |
| 56 | * iptables -I OUTPUT -o iface0 --goto costly |
| 57 | * iptables -I costly -m quota \! --quota 500000 --jump REJECT --reject-with icmp-net-prohibited |
| 58 | * iptables -A costly --jump penalty_box |
| 59 | * iptables -A costly -m owner --socket-exists |
| 60 | * . adding a new iface to this, E.g.: |
| 61 | * iptables -I INPUT -i iface1 --goto costly |
| 62 | * iptables -I OUTPUT -o iface1 --goto costly |
| 63 | * |
| 64 | * - quota per interface. This is achieve by having "costly" chains per quota. |
| 65 | * E.g. adding a new costly interface iface0 with its own quota: |
| 66 | * iptables -N costly_iface0 |
| 67 | * iptables -I INPUT -i iface0 --goto costly_iface0 |
| 68 | * iptables -I OUTPUT -o iface0 --goto costly_iface0 |
| 69 | * iptables -A costly_iface0 -m quota \! --quota 500000 --jump REJECT --reject-with icmp-net-prohibited |
| 70 | * iptables -A costly_iface0 --jump penalty_box |
| 71 | * iptables -A costly_iface0 -m owner --socket-exists |
| 72 | * |
| 73 | * * penalty_box handling: |
| 74 | * - only one penalty_box for all interfaces |
| 75 | * E.g Adding an app: |
| 76 | * iptables -A penalty_box -m owner --uid-owner app_3 --jump REJECT --reject-with icmp-net-prohibited |
| 77 | */ |
| 78 | const char *BandwidthController::cleanupCommands[] = { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 79 | /* Cleanup rules. */ |
| 80 | "-F", |
| 81 | "-t raw -F", |
JP Abgrall | 39f8f24 | 2011-06-29 19:21:58 -0700 | [diff] [blame^] | 82 | /* TODO: If at some point we need more user chains than here, then we will need |
| 83 | * a different cleanup approach. |
| 84 | */ |
| 85 | "-X", /* Should normally only be costly, penalty_box, and costly_<iface> */ |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 86 | }; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 87 | |
| 88 | const char *BandwidthController::setupCommands[] = { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 89 | /* Created needed chains. */ |
| 90 | "-N costly", |
| 91 | "-N penalty_box", |
| 92 | }; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 93 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 94 | const char *BandwidthController::basicAccountingCommands[] = { |
| 95 | "-F INPUT", |
| 96 | "-A INPUT -i lo --jump ACCEPT", |
| 97 | "-A INPUT -m owner --socket-exists", /* This is a tracking rule. */ |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 98 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 99 | "-F OUTPUT", |
| 100 | "-A OUTPUT -o lo --jump ACCEPT", |
| 101 | "-A OUTPUT -m owner --socket-exists", /* This is a tracking rule. */ |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 102 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 103 | "-F costly", |
| 104 | "-A costly --jump penalty_box", |
| 105 | "-A costly -m owner --socket-exists", /* This is a tracking rule. */ |
| 106 | /* TODO(jpa): Figure out why iptables doesn't correctly return from this |
| 107 | * chain. For now, hack the chain exit with an ACCEPT. |
| 108 | */ |
| 109 | "-A costly --jump ACCEPT", |
| 110 | }; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 111 | |
| 112 | BandwidthController::BandwidthController(void) { |
| 113 | |
| 114 | char value[PROPERTY_VALUE_MAX]; |
| 115 | |
| 116 | property_get("persist.bandwidth.enable", value, "0"); |
| 117 | if (!strcmp(value, "1")) { |
| 118 | enableBandwidthControl(); |
| 119 | } |
| 120 | |
| 121 | } |
| 122 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 123 | int BandwidthController::runIpxtablesCmd(const char *cmd, IptRejectOp rejectHandling) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 124 | int res = 0; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 125 | LOGD("runIpxtablesCmd(cmd=%s)", cmd); |
| 126 | res |= runIptablesCmd(cmd, rejectHandling, IptIpV4); |
| 127 | res |= runIptablesCmd(cmd, rejectHandling, IptIpV6); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 128 | return res; |
| 129 | } |
| 130 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 131 | int BandwidthController::StrncpyAndCheck(char *buffer, const char *src, size_t buffSize) { |
| 132 | |
| 133 | memset(buffer, '\0', buffSize); // strncpy() is not filling leftover with '\0' |
| 134 | strncpy(buffer, src, buffSize); |
| 135 | return buffer[buffSize - 1]; |
| 136 | } |
| 137 | |
| 138 | int BandwidthController::runIptablesCmd(const char *cmd, IptRejectOp rejectHandling, IptIpVer iptVer) { |
| 139 | char buffer[MAX_CMD_LEN]; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 140 | const char *argv[MAX_CMD_ARGS]; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 141 | int argc = 0; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 142 | char *next = buffer; |
| 143 | char *tmp; |
| 144 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 145 | std::string fullCmd = cmd; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 146 | |
| 147 | if (rejectHandling == IptRejectAdd) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 148 | fullCmd += " --jump REJECT --reject-with"; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 149 | switch (iptVer) { |
| 150 | case IptIpV4: |
| 151 | fullCmd += " icmp-net-prohibited"; |
| 152 | break; |
| 153 | case IptIpV6: |
| 154 | fullCmd += " icmp6-adm-prohibited"; |
| 155 | break; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 156 | } |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 157 | } |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 158 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 159 | argc = 0; |
| 160 | argv[argc++] = iptVer == IptIpV4 ? IPTABLES_PATH : IP6TABLES_PATH; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 161 | |
JP Abgrall | a9f802c | 2011-06-29 15:46:45 -0700 | [diff] [blame] | 162 | LOGD("runIptablesCmd(): %s %s", argv[0], fullCmd.c_str()); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 163 | if (StrncpyAndCheck(buffer, fullCmd.c_str(), sizeof(buffer))) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 164 | LOGE("iptables command too long"); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 165 | return -1; |
| 166 | } |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 167 | |
| 168 | while ((tmp = strsep(&next, " "))) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 169 | argv[argc++] = tmp; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 170 | if (argc >= MAX_CMD_ARGS) { |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 171 | LOGE("iptables argument overflow"); |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 172 | return -1; |
| 173 | } |
| 174 | } |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 175 | |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 176 | argv[argc] = NULL; |
| 177 | /* TODO(jpa): Once this stabilizes, remove logwrap() as it tends to wedge netd |
| 178 | * Then just talk directly to the kernel via rtnetlink. |
| 179 | */ |
| 180 | return logwrap(argc, argv, 0); |
| 181 | } |
| 182 | |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 183 | int BandwidthController::enableBandwidthControl(void) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 184 | int res; |
| 185 | /* Some of the initialCommands are allowed to fail */ |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 186 | runCommands(sizeof(cleanupCommands) / sizeof(char*), cleanupCommands, RunCmdFailureOk); |
| 187 | runCommands(sizeof(setupCommands) / sizeof(char*), setupCommands, RunCmdFailureOk); |
| 188 | res = runCommands(sizeof(basicAccountingCommands) / sizeof(char*), basicAccountingCommands, RunCmdFailureBad); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 189 | return res; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 190 | |
| 191 | } |
| 192 | |
| 193 | int BandwidthController::disableBandwidthControl(void) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 194 | /* The cleanupCommands are allowed to fail. */ |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 195 | runCommands(sizeof(cleanupCommands) / sizeof(char*), cleanupCommands, RunCmdFailureOk); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 196 | return 0; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 197 | } |
| 198 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 199 | int BandwidthController::runCommands(int numCommands, const char *commands[], RunCmdErrHandling cmdErrHandling) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 200 | int res = 0; |
| 201 | LOGD("runCommands(): %d commands", numCommands); |
| 202 | for (int cmdNum = 0; cmdNum < numCommands; cmdNum++) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 203 | res = runIpxtablesCmd(commands[cmdNum], IptRejectNoAdd); |
| 204 | if (res && cmdErrHandling != RunCmdFailureBad) |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 205 | return res; |
| 206 | } |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 207 | return cmdErrHandling == RunCmdFailureBad ? res : 0; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 208 | } |
| 209 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 210 | std::string BandwidthController::makeIptablesNaughtyCmd(IptOp op, int uid) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 211 | std::string res; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 212 | char *convBuff; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 213 | |
| 214 | switch (op) { |
| 215 | case IptOpInsert: |
| 216 | res = "-I"; |
| 217 | break; |
| 218 | case IptOpReplace: |
| 219 | res = "-R"; |
| 220 | break; |
| 221 | default: |
| 222 | case IptOpDelete: |
| 223 | res = "-D"; |
| 224 | break; |
| 225 | } |
| 226 | res += " penalty_box"; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 227 | asprintf(&convBuff, "%d", uid); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 228 | res += " -m owner --uid-owner "; |
| 229 | res += convBuff; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 230 | free(convBuff); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 231 | return res; |
| 232 | } |
| 233 | |
| 234 | int BandwidthController::addNaughtyApps(int numUids, char *appUids[]) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 235 | return maninpulateNaughtyApps(numUids, appUids, NaughtyAppOpAdd); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | int BandwidthController::removeNaughtyApps(int numUids, char *appUids[]) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 239 | return maninpulateNaughtyApps(numUids, appUids, NaughtyAppOpRemove); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 240 | } |
| 241 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 242 | int BandwidthController::maninpulateNaughtyApps(int numUids, char *appStrUids[], NaughtyAppOp appOp) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 243 | char cmd[MAX_CMD_LEN]; |
| 244 | int uidNum; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 245 | const char *failLogTemplate; |
| 246 | IptOp op; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 247 | int appUids[numUids]; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 248 | std::string naughtyCmd; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 249 | switch (appOp) { |
| 250 | case NaughtyAppOpAdd: |
| 251 | op = IptOpInsert; |
| 252 | failLogTemplate = "Failed to add app uid %d to penalty box."; |
| 253 | break; |
| 254 | case NaughtyAppOpRemove: |
| 255 | op = IptOpDelete; |
| 256 | failLogTemplate = "Failed to delete app uid %d from penalty box."; |
| 257 | break; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | for (uidNum = 0; uidNum < numUids; uidNum++) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 261 | appUids[uidNum] = atol(appStrUids[uidNum]); |
| 262 | if (appUids[uidNum] == 0) { |
| 263 | LOGE(failLogTemplate, appUids[uidNum]); |
| 264 | goto fail_parse; |
| 265 | } |
| 266 | } |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 267 | |
| 268 | for (uidNum = 0; uidNum < numUids; uidNum++) { |
| 269 | naughtyCmd = makeIptablesNaughtyCmd(op, appUids[uidNum]); |
| 270 | if (runIpxtablesCmd(naughtyCmd.c_str(), IptRejectAdd)) { |
| 271 | LOGE(failLogTemplate, appUids[uidNum]); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 272 | goto fail_with_uidNum; |
| 273 | } |
| 274 | } |
| 275 | return 0; |
| 276 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 277 | fail_with_uidNum: |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 278 | /* Try to remove the uid that failed in any case*/ |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 279 | naughtyCmd = makeIptablesNaughtyCmd(IptOpDelete, appUids[uidNum]); |
| 280 | runIpxtablesCmd(naughtyCmd.c_str(), IptRejectAdd); |
| 281 | fail_parse: |
| 282 | return -1; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 283 | } |
| 284 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 285 | std::string BandwidthController::makeIptablesQuotaCmd(IptOp op, const char *costName, int64_t quota) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 286 | std::string res; |
| 287 | char convBuff[21]; // log10(2^64) ~ 20 |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 288 | |
| 289 | LOGD("makeIptablesQuotaCmd(%d, %llu)", op, quota); |
| 290 | |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 291 | switch (op) { |
| 292 | case IptOpInsert: |
| 293 | res = "-I"; |
| 294 | break; |
| 295 | case IptOpReplace: |
| 296 | res = "-R"; |
| 297 | break; |
| 298 | default: |
| 299 | case IptOpDelete: |
| 300 | res = "-D"; |
| 301 | break; |
| 302 | } |
| 303 | res += " costly"; |
| 304 | if (costName) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 305 | res += "_"; |
| 306 | res += costName; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 307 | } |
| 308 | sprintf(convBuff, "%lld", quota); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 309 | /* TODO(jpa): Use -m quota2 --name " + costName + " ! --quota " |
| 310 | * once available. |
| 311 | */ |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 312 | res += " -m quota ! --quota "; |
| 313 | res += convBuff; |
| 314 | ; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 315 | // The requried --jump REJECT ... will be added later. |
| 316 | return res; |
| 317 | } |
| 318 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 319 | int BandwidthController::prepCostlyIface(const char *ifn, QuotaType quotaType) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 320 | char cmd[MAX_CMD_LEN]; |
| 321 | int res = 0; |
| 322 | std::string costString; |
| 323 | const char *costCString; |
| 324 | |
| 325 | costString = "costly"; |
| 326 | /* The "-N costly" is created upfront, no need to handle it here. */ |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 327 | switch (quotaType) { |
| 328 | case QuotaUnique: |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 329 | costString += "_"; |
| 330 | costString += ifn; |
| 331 | costCString = costString.c_str(); |
| 332 | snprintf(cmd, sizeof(cmd), "-N %s", costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 333 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 334 | snprintf(cmd, sizeof(cmd), "-A %s -j penalty_box", costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 335 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 336 | snprintf(cmd, sizeof(cmd), "-A %s -m owner --socket-exists", costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 337 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 338 | /* TODO(jpa): Figure out why iptables doesn't correctly return from this |
| 339 | * chain. For now, hack the chain exit with an ACCEPT. |
| 340 | */ |
| 341 | snprintf(cmd, sizeof(cmd), "-A %s --jump ACCEPT", costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 342 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
| 343 | break; |
| 344 | case QuotaShared: |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 345 | costCString = costString.c_str(); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 346 | break; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | snprintf(cmd, sizeof(cmd), "-I INPUT -i %s --goto %s", ifn, costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 350 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 351 | snprintf(cmd, sizeof(cmd), "-I OUTPUT -o %s --goto %s", ifn, costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 352 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 353 | return res; |
| 354 | } |
| 355 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 356 | int BandwidthController::cleanupCostlyIface(const char *ifn, QuotaType quotaType) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 357 | char cmd[MAX_CMD_LEN]; |
| 358 | int res = 0; |
| 359 | std::string costString; |
| 360 | const char *costCString; |
| 361 | |
| 362 | costString = "costly"; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 363 | switch (quotaType) { |
| 364 | case QuotaUnique: |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 365 | costString += "_"; |
| 366 | costString += ifn; |
| 367 | costCString = costString.c_str(); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 368 | break; |
| 369 | case QuotaShared: |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 370 | costCString = costString.c_str(); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 371 | break; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | snprintf(cmd, sizeof(cmd), "-D INPUT -i %s --goto %s", ifn, costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 375 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 376 | snprintf(cmd, sizeof(cmd), "-D OUTPUT -o %s --goto %s", ifn, costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 377 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 378 | |
| 379 | /* The "-N costly" is created upfront, no need to handle it here. */ |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 380 | if (quotaType == QuotaUnique) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 381 | snprintf(cmd, sizeof(cmd), "-F %s", costCString); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 382 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | a9f802c | 2011-06-29 15:46:45 -0700 | [diff] [blame] | 383 | snprintf(cmd, sizeof(cmd), "-X %s", costCString); |
| 384 | res |= runIpxtablesCmd(cmd, IptRejectNoAdd); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 385 | } |
| 386 | return res; |
| 387 | } |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 388 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 389 | int BandwidthController::setInterfaceSharedQuota(const char *iface, int64_t maxBytes) { |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 390 | char cmd[MAX_CMD_LEN]; |
| 391 | char ifn[MAX_IFACENAME_LEN]; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 392 | int res = 0; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 393 | std::string quotaCmd; |
| 394 | std::string ifaceName;; |
| 395 | const char *costName = NULL; /* Shared quota */ |
| 396 | std::list<std::string>::iterator it; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 397 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 398 | if (StrncpyAndCheck(ifn, iface, sizeof(ifn))) { |
| 399 | LOGE("Interface name longer than %d", MAX_IFACENAME_LEN); |
| 400 | return -1; |
| 401 | } |
| 402 | ifaceName = ifn; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 403 | |
| 404 | if (maxBytes == -1) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 405 | return removeInterfaceSharedQuota(ifn); |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | /* Insert ingress quota. */ |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 409 | for (it = sharedQuotaIfaces.begin(); it != sharedQuotaIfaces.end(); it++) { |
| 410 | if (*it == ifaceName) |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 411 | break; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 412 | } |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 413 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 414 | if (it == sharedQuotaIfaces.end()) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 415 | res |= prepCostlyIface(ifn, QuotaShared); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 416 | if (sharedQuotaIfaces.empty()) { |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 417 | quotaCmd = makeIptablesQuotaCmd(IptOpInsert, costName, maxBytes); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 418 | res |= runIpxtablesCmd(quotaCmd.c_str(), IptRejectAdd); |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 419 | if (res) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 420 | LOGE("Failed set quota rule."); |
| 421 | goto fail; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 422 | } |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 423 | sharedQuotaBytes = maxBytes; |
| 424 | } |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 425 | sharedQuotaIfaces.push_front(ifaceName); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 426 | |
| 427 | } |
| 428 | |
| 429 | if (maxBytes != sharedQuotaBytes) { |
| 430 | /* Instead of replacing, which requires being aware of the rules in |
| 431 | * the kernel, we just add a new one, then delete the older one. |
| 432 | */ |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 433 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 434 | quotaCmd = makeIptablesQuotaCmd(IptOpInsert, costName, maxBytes); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 435 | res |= runIpxtablesCmd(quotaCmd.c_str(), IptRejectAdd); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 436 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 437 | quotaCmd = makeIptablesQuotaCmd(IptOpDelete, costName, sharedQuotaBytes); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 438 | res |= runIpxtablesCmd(quotaCmd.c_str(), IptRejectAdd); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 439 | |
| 440 | if (res) { |
| 441 | LOGE("Failed replace quota rule."); |
| 442 | goto fail; |
| 443 | } |
| 444 | sharedQuotaBytes = maxBytes; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 445 | } |
| 446 | return 0; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 447 | |
| 448 | fail: |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 449 | /* |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 450 | * TODO(jpa): once we get rid of iptables in favor of rtnetlink, reparse |
| 451 | * rules in the kernel to see which ones need cleaning up. |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 452 | * For now callers needs to choose if they want to "ndc bandwidth enable" |
| 453 | * which resets everything. |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 454 | */ |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 455 | removeInterfaceSharedQuota(ifn); |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 456 | return -1; |
| 457 | } |
| 458 | |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 459 | int BandwidthController::removeInterfaceSharedQuota(const char *iface) { |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 460 | char ifn[MAX_IFACENAME_LEN]; |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 461 | int res = 0; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 462 | std::string ifaceName; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 463 | std::list<std::string>::iterator it; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 464 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 465 | if(StrncpyAndCheck(ifn, iface, sizeof(ifn))) { |
| 466 | LOGE("Interface name longer than %d", MAX_IFACENAME_LEN); |
| 467 | return -1; |
| 468 | } |
| 469 | ifaceName =ifn; |
| 470 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 471 | for (it = sharedQuotaIfaces.begin(); it != sharedQuotaIfaces.end(); it++) { |
| 472 | if (*it == ifaceName) |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 473 | break; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 474 | } |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 475 | if (it == sharedQuotaIfaces.end()) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 476 | LOGE("No such iface %s to delete.", ifn); |
| 477 | return -1; |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 478 | } |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 479 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 480 | res |= cleanupCostlyIface(ifn, QuotaShared); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 481 | sharedQuotaIfaces.erase(it); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 482 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 483 | if (sharedQuotaIfaces.empty()) { |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 484 | std::string quotaCmd; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 485 | quotaCmd = makeIptablesQuotaCmd(IptOpDelete, NULL, sharedQuotaBytes); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 486 | res |= runIpxtablesCmd(quotaCmd.c_str(), IptRejectAdd); |
JP Abgrall | fa6f46d | 2011-06-17 23:17:28 -0700 | [diff] [blame] | 487 | sharedQuotaBytes = -1; |
| 488 | } |
| 489 | |
JP Abgrall | 4a5f5ca | 2011-06-15 18:37:39 -0700 | [diff] [blame] | 490 | return res; |
| 491 | } |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 492 | |
| 493 | int BandwidthController::setInterfaceQuota(const char *iface, int64_t maxBytes) { |
| 494 | char ifn[MAX_IFACENAME_LEN]; |
| 495 | int res = 0; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 496 | std::string ifaceName; |
| 497 | const char *costName; |
| 498 | std::list<QuotaInfo>::iterator it; |
| 499 | std::string quotaCmd; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 500 | |
| 501 | if (maxBytes == -1) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 502 | return removeInterfaceQuota(iface); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 503 | } |
| 504 | |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 505 | if(StrncpyAndCheck(ifn, iface, sizeof(ifn))) { |
| 506 | LOGE("Interface name longer than %d", MAX_IFACENAME_LEN); |
| 507 | return -1; |
| 508 | } |
| 509 | ifaceName = ifn; |
| 510 | costName = iface; |
| 511 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 512 | |
| 513 | /* Insert ingress quota. */ |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 514 | for (it = quotaIfaces.begin(); it != quotaIfaces.end(); it++) { |
| 515 | if (it->first == ifaceName) |
| 516 | break; |
| 517 | } |
| 518 | |
| 519 | if (it == quotaIfaces.end()) { |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 520 | res |= prepCostlyIface(ifn, QuotaUnique); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 521 | quotaCmd = makeIptablesQuotaCmd(IptOpInsert, costName, maxBytes); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 522 | res |= runIpxtablesCmd(quotaCmd.c_str(), IptRejectAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 523 | if (res) { |
| 524 | LOGE("Failed set quota rule."); |
| 525 | goto fail; |
| 526 | } |
| 527 | |
| 528 | quotaIfaces.push_front(QuotaInfo(ifaceName, maxBytes)); |
| 529 | |
| 530 | } else { |
| 531 | /* Instead of replacing, which requires being aware of the rules in |
| 532 | * the kernel, we just add a new one, then delete the older one. |
| 533 | */ |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 534 | quotaCmd = makeIptablesQuotaCmd(IptOpInsert, costName, maxBytes); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 535 | res |= runIpxtablesCmd(quotaCmd.c_str(), IptRejectAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 536 | |
| 537 | quotaCmd = makeIptablesQuotaCmd(IptOpDelete, costName, it->second); |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 538 | res |= runIpxtablesCmd(quotaCmd.c_str(), IptRejectAdd); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 539 | |
| 540 | if (res) { |
| 541 | LOGE("Failed replace quota rule."); |
| 542 | goto fail; |
| 543 | } |
| 544 | it->second = maxBytes; |
| 545 | } |
| 546 | return 0; |
| 547 | |
| 548 | fail: |
| 549 | /* |
| 550 | * TODO(jpa): once we get rid of iptables in favor of rtnetlink, reparse |
| 551 | * rules in the kernel to see which ones need cleaning up. |
| 552 | * For now callers needs to choose if they want to "ndc bandwidth enable" |
| 553 | * which resets everything. |
| 554 | */ |
| 555 | removeInterfaceSharedQuota(ifn); |
| 556 | return -1; |
| 557 | } |
| 558 | |
| 559 | int BandwidthController::removeInterfaceQuota(const char *iface) { |
| 560 | |
| 561 | char ifn[MAX_IFACENAME_LEN]; |
| 562 | int res = 0; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 563 | std::string ifaceName; |
| 564 | const char *costName; |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 565 | std::list<QuotaInfo>::iterator it; |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 566 | |
| 567 | if(StrncpyAndCheck(ifn, iface, sizeof(ifn))) { |
| 568 | LOGE("Interface name longer than %d", MAX_IFACENAME_LEN); |
| 569 | return -1; |
| 570 | } |
| 571 | ifaceName = ifn; |
| 572 | costName = iface; |
| 573 | |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 574 | for (it = quotaIfaces.begin(); it != quotaIfaces.end(); it++) { |
| 575 | if (it->first == ifaceName) |
| 576 | break; |
| 577 | } |
| 578 | |
| 579 | if (it == quotaIfaces.end()) { |
| 580 | LOGE("No such iface %s to delete.", ifn); |
| 581 | return -1; |
| 582 | } |
| 583 | |
| 584 | /* This also removes the quota command of CostlyIface chain. */ |
JP Abgrall | 26e0d49 | 2011-06-24 19:21:51 -0700 | [diff] [blame] | 585 | res |= cleanupCostlyIface(ifn, QuotaUnique); |
JP Abgrall | 0dad7c2 | 2011-06-24 11:58:14 -0700 | [diff] [blame] | 586 | |
| 587 | quotaIfaces.erase(it); |
| 588 | |
| 589 | return res; |
| 590 | } |