Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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 | |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 17 | #include <ctype.h> |
| 18 | |
Mark Salyzyn | b332f1c | 2015-08-19 13:53:20 -0700 | [diff] [blame] | 19 | #include <base/stringprintf.h> |
Mark Salyzyn | 932f7ac | 2015-08-28 08:02:59 -0700 | [diff] [blame^] | 20 | #include <cutils/properties.h> |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 21 | |
| 22 | #include "LogWhiteBlackList.h" |
| 23 | |
| 24 | // White and Black list |
| 25 | |
Mark Salyzyn | 7718778 | 2015-05-12 15:21:31 -0700 | [diff] [blame] | 26 | Prune::Prune(uid_t uid, pid_t pid) : mUid(uid), mPid(pid) { |
| 27 | } |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 28 | |
| 29 | int Prune::cmp(uid_t uid, pid_t pid) const { |
| 30 | if ((mUid == uid_all) || (mUid == uid)) { |
| 31 | if (mPid == pid_all) { |
| 32 | return 0; |
| 33 | } |
| 34 | return pid - mPid; |
| 35 | } |
| 36 | return uid - mUid; |
| 37 | } |
| 38 | |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 39 | std::string Prune::format() { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 40 | if (mUid != uid_all) { |
Chih-Hung Hsieh | 634118e | 2014-09-12 16:02:28 -0700 | [diff] [blame] | 41 | if (mPid != pid_all) { |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 42 | return android::base::StringPrintf("%u/%u", mUid, mPid); |
Chih-Hung Hsieh | 634118e | 2014-09-12 16:02:28 -0700 | [diff] [blame] | 43 | } |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 44 | return android::base::StringPrintf("%u", mUid); |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 45 | } |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 46 | if (mPid != pid_all) { |
| 47 | return android::base::StringPrintf("/%u", mPid); |
| 48 | } |
| 49 | // NB: mPid == pid_all can not happen if mUid == uid_all |
| 50 | return std::string("/"); |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 51 | } |
| 52 | |
Mark Salyzyn | 932f7ac | 2015-08-28 08:02:59 -0700 | [diff] [blame^] | 53 | PruneList::PruneList() { |
| 54 | init(NULL); |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | PruneList::~PruneList() { |
| 58 | PruneCollection::iterator it; |
| 59 | for (it = mNice.begin(); it != mNice.end();) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 60 | it = mNice.erase(it); |
| 61 | } |
| 62 | for (it = mNaughty.begin(); it != mNaughty.end();) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 63 | it = mNaughty.erase(it); |
| 64 | } |
| 65 | } |
| 66 | |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 67 | int PruneList::init(const char *str) { |
Mark Salyzyn | 1a01f96 | 2014-05-06 13:49:28 -0700 | [diff] [blame] | 68 | mWorstUidEnabled = true; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 69 | PruneCollection::iterator it; |
| 70 | for (it = mNice.begin(); it != mNice.end();) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 71 | it = mNice.erase(it); |
| 72 | } |
| 73 | for (it = mNaughty.begin(); it != mNaughty.end();) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 74 | it = mNaughty.erase(it); |
| 75 | } |
| 76 | |
Mark Salyzyn | 932f7ac | 2015-08-28 08:02:59 -0700 | [diff] [blame^] | 77 | static const char _default[] = "default"; |
| 78 | // default here means take ro.logd.filter, persist.logd.filter then |
| 79 | // internal default in that order. |
| 80 | if (str && !strcmp(str, _default)) { |
| 81 | str = NULL; |
| 82 | } |
| 83 | static const char _disable[] = "disable"; |
| 84 | if (str && !strcmp(str, _disable)) { |
| 85 | str = ""; |
| 86 | } |
| 87 | |
| 88 | std::string filter; |
| 89 | |
| 90 | if (str) { |
| 91 | filter = str; |
| 92 | } else { |
| 93 | char property[PROPERTY_VALUE_MAX]; |
| 94 | property_get("ro.logd.filter", property, _default); |
| 95 | filter = property; |
| 96 | property_get("persist.logd.filter", property, filter.c_str()); |
| 97 | // default here means take ro.logd.filter |
| 98 | if (strcmp(property, _default)) { |
| 99 | filter = property; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | // default here means take internal default. |
| 104 | if (filter == _default) { |
| 105 | // See README.property for description of filter format |
| 106 | filter = "~!"; |
| 107 | } |
| 108 | if (filter == _disable) { |
| 109 | filter = ""; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | mWorstUidEnabled = false; |
| 113 | |
Mark Salyzyn | 932f7ac | 2015-08-28 08:02:59 -0700 | [diff] [blame^] | 114 | for(str = filter.c_str(); *str; ++str) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 115 | if (isspace(*str)) { |
| 116 | continue; |
| 117 | } |
| 118 | |
| 119 | PruneCollection *list; |
| 120 | if ((*str == '~') || (*str == '!')) { // ~ supported, ! undocumented |
| 121 | ++str; |
| 122 | // special case, translates to worst UID at priority in blacklist |
| 123 | if (*str == '!') { |
| 124 | mWorstUidEnabled = true; |
| 125 | ++str; |
| 126 | if (!*str) { |
| 127 | break; |
| 128 | } |
| 129 | if (!isspace(*str)) { |
| 130 | return 1; |
| 131 | } |
| 132 | continue; |
| 133 | } |
| 134 | if (!*str) { |
| 135 | return 1; |
| 136 | } |
| 137 | list = &mNaughty; |
| 138 | } else { |
| 139 | list = &mNice; |
| 140 | } |
| 141 | |
| 142 | uid_t uid = Prune::uid_all; |
| 143 | if (isdigit(*str)) { |
| 144 | uid = 0; |
| 145 | do { |
| 146 | uid = uid * 10 + *str++ - '0'; |
| 147 | } while (isdigit(*str)); |
| 148 | } |
| 149 | |
| 150 | pid_t pid = Prune::pid_all; |
| 151 | if (*str == '/') { |
| 152 | ++str; |
| 153 | if (isdigit(*str)) { |
| 154 | pid = 0; |
| 155 | do { |
| 156 | pid = pid * 10 + *str++ - '0'; |
| 157 | } while (isdigit(*str)); |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | if ((uid == Prune::uid_all) && (pid == Prune::pid_all)) { |
| 162 | return 1; |
| 163 | } |
| 164 | |
| 165 | if (*str && !isspace(*str)) { |
| 166 | return 1; |
| 167 | } |
| 168 | |
| 169 | // insert sequentially into list |
| 170 | PruneCollection::iterator it = list->begin(); |
| 171 | while (it != list->end()) { |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 172 | Prune &p = *it; |
| 173 | int m = uid - p.mUid; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 174 | if (m == 0) { |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 175 | if (p.mPid == p.pid_all) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 176 | break; |
| 177 | } |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 178 | if ((pid == p.pid_all) && (p.mPid != p.pid_all)) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 179 | it = list->erase(it); |
| 180 | continue; |
| 181 | } |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 182 | m = pid - p.mPid; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 183 | } |
Mark Salyzyn | 22e287d | 2014-03-21 13:12:16 -0700 | [diff] [blame] | 184 | if (m <= 0) { |
| 185 | if (m < 0) { |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 186 | list->insert(it, Prune(uid,pid)); |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 187 | } |
| 188 | break; |
| 189 | } |
| 190 | ++it; |
| 191 | } |
| 192 | if (it == list->end()) { |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 193 | list->push_back(Prune(uid,pid)); |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 194 | } |
| 195 | if (!*str) { |
| 196 | break; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 203 | std::string PruneList::format() { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 204 | static const char nice_format[] = " %s"; |
| 205 | const char *fmt = nice_format + 1; |
| 206 | |
Mark Salyzyn | b332f1c | 2015-08-19 13:53:20 -0700 | [diff] [blame] | 207 | std::string string; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 208 | |
| 209 | if (mWorstUidEnabled) { |
Mark Salyzyn | b332f1c | 2015-08-19 13:53:20 -0700 | [diff] [blame] | 210 | string = "~!"; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 211 | fmt = nice_format; |
| 212 | } |
| 213 | |
| 214 | PruneCollection::iterator it; |
| 215 | |
| 216 | for (it = mNice.begin(); it != mNice.end(); ++it) { |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 217 | string += android::base::StringPrintf(fmt, (*it).format().c_str()); |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 218 | fmt = nice_format; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | static const char naughty_format[] = " ~%s"; |
| 222 | fmt = naughty_format + (*fmt != ' '); |
| 223 | for (it = mNaughty.begin(); it != mNaughty.end(); ++it) { |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 224 | string += android::base::StringPrintf(fmt, (*it).format().c_str()); |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 225 | fmt = naughty_format; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 226 | } |
| 227 | |
Mark Salyzyn | 73160ac | 2015-08-20 10:01:44 -0700 | [diff] [blame] | 228 | return string; |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | // ToDo: Lists are in sorted order, Prune->cmp() returns + or - |
| 232 | // If there is scaling issues, resort to a better algorithm than linear |
| 233 | // based on these assumptions. |
| 234 | |
| 235 | bool PruneList::naughty(LogBufferElement *element) { |
| 236 | PruneCollection::iterator it; |
| 237 | for (it = mNaughty.begin(); it != mNaughty.end(); ++it) { |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 238 | if (!(*it).cmp(element)) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 239 | return true; |
| 240 | } |
| 241 | } |
| 242 | return false; |
| 243 | } |
| 244 | |
| 245 | bool PruneList::nice(LogBufferElement *element) { |
| 246 | PruneCollection::iterator it; |
| 247 | for (it = mNice.begin(); it != mNice.end(); ++it) { |
Mark Salyzyn | e0ed16c | 2015-08-19 13:31:31 -0700 | [diff] [blame] | 248 | if (!(*it).cmp(element)) { |
Mark Salyzyn | dfa7a07 | 2014-02-11 12:29:31 -0800 | [diff] [blame] | 249 | return true; |
| 250 | } |
| 251 | } |
| 252 | return false; |
| 253 | } |