src/acl/TimeData.cc

   1 /*
   2  * Copyright (C) 1996-2017 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 28    Access Control */
  10
  11 #include "squid.h"
  12 #include "acl/Checklist.h"
  13 #include "acl/TimeData.h"
  14 #include "cache_cf.h"
  15 #include "ConfigParser.h"
  16 #include "Debug.h"
  17 #include "wordlist.h"
  18
  19 ACLTimeData::ACLTimeData () : weekbits (0), start (0), stop (0), next (NULL) {}
  20
  21 ACLTimeData::ACLTimeData(ACLTimeData const &old) : weekbits(old.weekbits), start (old.start), stop (old.stop), next (NULL)
  22 {
  23     if (old.next)
  24         next = (ACLTimeData *)old.next->clone();
  25 }
  26
  27 ACLTimeData&
  28 ACLTimeData::operator=(ACLTimeData const &old)
  29 {
  30     weekbits = old.weekbits;
  31     start = old.start;
  32     stop = old.stop;
  33     next = NULL;
  34
  35     if (old.next)
  36         next = (ACLTimeData *)old.next->clone();
  37
  38     return *this;
  39 }
  40
  41 ACLTimeData::~ACLTimeData()
  42 {
  43     if (next)
  44         delete next;
  45 }
  46
  47 bool
  48 ACLTimeData::match(time_t when)
  49 {
  50     static time_t last_when = 0;
  51
  52     static struct tm tm;
  53     time_t t;
  54
  55     if (when != last_when) {
  56         last_when = when;
  57         memcpy(&tm, localtime(&when), sizeof(struct tm));
  58     }
  59
  60     t = (time_t) (tm.tm_hour * 60 + tm.tm_min);
  61     ACLTimeData *data = this;
  62
  63     while (data) {
  64         debugs(28, 3, "aclMatchTime: checking " << t  << " in " <<
  65                data->start  << "-" << data->stop  << ", weekbits=" <<
  66                std::hex << data->weekbits);
  67
  68         if (t >= data->start && t <= data->stop && (data->weekbits & (1 << tm.tm_wday)))
  69             return 1;
  70
  71         data = data->next;
  72     }
  73
  74     return 0;
  75 }
  76
  77 SBufList
  78 ACLTimeData::dump() const
  79 {
  80     SBufList sl;
  81     const ACLTimeData *t = this;
  82
  83     while (t != NULL) {
  84         SBuf s;
  85         s.Printf("%c%c%c%c%c%c%c %02d:%02d-%02d:%02d",
  86                  t->weekbits & ACL_SUNDAY ? 'S' : '-',
  87                  t->weekbits & ACL_MONDAY ? 'M' : '-',
  88                  t->weekbits & ACL_TUESDAY ? 'T' : '-',
  89                  t->weekbits & ACL_WEDNESDAY ? 'W' : '-',
  90                  t->weekbits & ACL_THURSDAY ? 'H' : '-',
  91                  t->weekbits & ACL_FRIDAY ? 'F' : '-',
  92                  t->weekbits & ACL_SATURDAY ? 'A' : '-',
  93                  t->start / 60, t->start % 60, t->stop / 60, t->stop % 60);
  94         sl.push_back(s);
  95         t = t->next;
  96     }
  97
  98     return sl;
  99 }
 100
 101 void
 102 ACLTimeData::parse()
 103 {
 104     ACLTimeData **Tail;
 105     long parsed_weekbits = 0;
 106
 107     for (Tail = &next; *Tail; Tail = &((*Tail)->next));
 108     ACLTimeData *q = NULL;
 109
 110     int h1, m1, h2, m2;
 111
 112     while (char *t = ConfigParser::strtokFile()) {
 113         if (*t < '0' || *t > '9') {
 114             /* assume its day-of-week spec */
 115
 116             while (*t) {
 117                 switch (*t++) {
 118
 119                 case 'S':
 120                     parsed_weekbits |= ACL_SUNDAY;
 121                     break;
 122
 123                 case 'M':
 124                     parsed_weekbits |= ACL_MONDAY;
 125                     break;
 126
 127                 case 'T':
 128                     parsed_weekbits |= ACL_TUESDAY;
 129                     break;
 130
 131                 case 'W':
 132                     parsed_weekbits |= ACL_WEDNESDAY;
 133                     break;
 134
 135                 case 'H':
 136                     parsed_weekbits |= ACL_THURSDAY;
 137                     break;
 138
 139                 case 'F':
 140                     parsed_weekbits |= ACL_FRIDAY;
 141                     break;
 142
 143                 case 'A':
 144                     parsed_weekbits |= ACL_SATURDAY;
 145                     break;
 146
 147                 case 'D':
 148                     parsed_weekbits |= ACL_WEEKDAYS;
 149                     break;
 150
 151                 case '-':
 152                     /* ignore placeholder */
 153                     break;
 154
 155                 default:
 156                     debugs(28, DBG_CRITICAL, "" << cfg_filename << " line " << config_lineno <<
 157                            ": " << config_input_line);
 158                     debugs(28, DBG_CRITICAL, "aclParseTimeSpec: Bad Day '" << *t << "'" );
 159                     break;
 160                 }
 161             }
 162         } else {
 163             /* assume its time-of-day spec */
 164
 165             if ((sscanf(t, "%d:%d-%d:%d", &h1, &m1, &h2, &m2) < 4) || (!((h1 >= 0 && h1 < 24) && ((h2 >= 0 && h2 < 24) || (h2 == 24 && m2 == 0)) && (m1 >= 0 && m1 < 60) && (m2 >= 0 && m2 < 60)))) {
 166                 debugs(28, DBG_CRITICAL, "aclParseTimeSpec: Bad time range '" << t << "'");
 167                 self_destruct();
 168
 169                 if (q != this)
 170                     delete q;
 171
 172                 return;
 173             }
 174
 175             if ((parsed_weekbits == 0) && (start == 0) && (stop == 0))
 176                 q = this;
 177             else
 178                 q = new ACLTimeData;
 179
 180             q->start = h1 * 60 + m1;
 181
 182             q->stop = h2 * 60 + m2;
 183
 184             q->weekbits = parsed_weekbits;
 185
 186             parsed_weekbits = 0;
 187
 188             if (q->start > q->stop) {
 189                 debugs(28, DBG_CRITICAL, "aclParseTimeSpec: Reversed time range");
 190                 self_destruct();
 191
 192                 if (q != this)
 193                     delete q;
 194
 195                 return;
 196             }
 197
 198             if (q->weekbits == 0)
 199                 q->weekbits = ACL_ALLWEEK;
 200
 201             if (q != this) {
 202                 *(Tail) = q;
 203                 Tail = &q->next;
 204             }
 205         }
 206     }
 207
 208     if (parsed_weekbits) {
 209
 210         q = new ACLTimeData;
 211
 212         q->start = 0 * 60 + 0;
 213
 214         q->stop =  24 * 60 + 0;
 215
 216         q->weekbits = parsed_weekbits;
 217
 218         *(Tail) = q;
 219         Tail = &q->next;
 220     }
 221 }
 222
 223 bool
 224 ACLTimeData::empty() const
 225 {
 226     return false;
 227 }
 228
 229 ACLData<time_t> *
 230 ACLTimeData::clone() const
 231 {
 232     return new ACLTimeData(*this);
 233 }
 234