contrib/sendmail/src/stats.c

   1 /*
   2  * Copyright (c) 1998-2002 Sendmail, Inc. and its suppliers.
   3  *      All rights reserved.
   4  * Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.
   5  * Copyright (c) 1988, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * By using this file, you agree to the terms and conditions set
   9  * forth in the LICENSE file which can be found at the top level of
  10  * the sendmail distribution.
  11  *
  12  */
  13
  14 #include <sendmail.h>
  15
  16 SM_RCSID("@(#)$Id: stats.c,v 8.55 2002/05/21 22:28:52 gshapiro Exp $")
  17
  18 #include <sendmail/mailstats.h>
  19
  20 static struct statistics        Stat;
  21
  22 static bool     GotStats = false;       /* set when we have stats to merge */
  23
  24 /* See http://physics.nist.gov/cuu/Units/binary.html */
  25 #define ONE_K           1000            /* one thousand (twenty-four?) */
  26 #define KBYTES(x)       (((x) + (ONE_K - 1)) / ONE_K)
  27 /*
  28 **  MARKSTATS -- mark statistics
  29 **
  30 **      Parameters:
  31 **              e -- the envelope.
  32 **              to -- to address.
  33 **              type -- type of stats this represents.
  34 **
  35 **      Returns:
  36 **              none.
  37 **
  38 **      Side Effects:
  39 **              changes static Stat structure
  40 */
  41
  42 void
  43 markstats(e, to, type)
  44         register ENVELOPE *e;
  45         register ADDRESS *to;
  46         int type;
  47 {
  48         switch (type)
  49         {
  50 #if _FFR_QUARANTINE
  51           case STATS_QUARANTINE:
  52                 if (e->e_from.q_mailer != NULL)
  53                         Stat.stat_nq[e->e_from.q_mailer->m_mno]++;
  54                 break;
  55 #endif /* _FFR_QUARANTINE */
  56
  57           case STATS_REJECT:
  58                 if (e->e_from.q_mailer != NULL)
  59                 {
  60                         if (bitset(EF_DISCARD, e->e_flags))
  61                                 Stat.stat_nd[e->e_from.q_mailer->m_mno]++;
  62                         else
  63                                 Stat.stat_nr[e->e_from.q_mailer->m_mno]++;
  64                 }
  65                 Stat.stat_cr++;
  66                 break;
  67
  68           case STATS_CONNECT:
  69                 if (to == NULL)
  70                         Stat.stat_cf++;
  71                 else
  72                         Stat.stat_ct++;
  73                 break;
  74
  75           case STATS_NORMAL:
  76                 if (to == NULL)
  77                 {
  78                         if (e->e_from.q_mailer != NULL)
  79                         {
  80                                 Stat.stat_nf[e->e_from.q_mailer->m_mno]++;
  81                                 Stat.stat_bf[e->e_from.q_mailer->m_mno] +=
  82                                         KBYTES(e->e_msgsize);
  83                         }
  84                 }
  85                 else
  86                 {
  87                         Stat.stat_nt[to->q_mailer->m_mno]++;
  88                         Stat.stat_bt[to->q_mailer->m_mno] += KBYTES(e->e_msgsize);
  89                 }
  90                 break;
  91
  92           default:
  93                 /* Silently ignore bogus call */
  94                 return;
  95         }
  96
  97
  98         GotStats = true;
  99 }
 100 /*
 101 **  CLEARSTATS -- clear statistics structure
 102 **
 103 **      Parameters:
 104 **              none.
 105 **
 106 **      Returns:
 107 **              none.
 108 **
 109 **      Side Effects:
 110 **              clears the Stat structure.
 111 */
 112
 113 void
 114 clearstats()
 115 {
 116         /* clear the structure to avoid future disappointment */
 117         memset(&Stat, '\0', sizeof Stat);
 118         GotStats = false;
 119 }
 120 /*
 121 **  POSTSTATS -- post statistics in the statistics file
 122 **
 123 **      Parameters:
 124 **              sfile -- the name of the statistics file.
 125 **
 126 **      Returns:
 127 **              none.
 128 **
 129 **      Side Effects:
 130 **              merges the Stat structure with the sfile file.
 131 */
 132
 133 void
 134 poststats(sfile)
 135         char *sfile;
 136 {
 137         int fd;
 138         static bool entered = false;
 139         long sff = SFF_REGONLY|SFF_OPENASROOT;
 140         struct statistics stats;
 141         extern off_t lseek();
 142
 143         if (sfile == NULL || *sfile == '\0' || !GotStats || entered)
 144                 return;
 145         entered = true;
 146
 147         (void) time(&Stat.stat_itime);
 148         Stat.stat_size = sizeof Stat;
 149         Stat.stat_magic = STAT_MAGIC;
 150         Stat.stat_version = STAT_VERSION;
 151
 152         if (!bitnset(DBS_WRITESTATSTOSYMLINK, DontBlameSendmail))
 153                 sff |= SFF_NOSLINK;
 154         if (!bitnset(DBS_WRITESTATSTOHARDLINK, DontBlameSendmail))
 155                 sff |= SFF_NOHLINK;
 156
 157         fd = safeopen(sfile, O_RDWR, 0600, sff);
 158         if (fd < 0)
 159         {
 160                 if (LogLevel > 12)
 161                         sm_syslog(LOG_INFO, NOQID, "poststats: %s: %s",
 162                                   sfile, sm_errstring(errno));
 163                 errno = 0;
 164                 entered = false;
 165                 return;
 166         }
 167         if (read(fd, (char *) &stats, sizeof stats) == sizeof stats &&
 168             stats.stat_size == sizeof stats &&
 169             stats.stat_magic == Stat.stat_magic &&
 170             stats.stat_version == Stat.stat_version)
 171         {
 172                 /* merge current statistics into statfile */
 173                 register int i;
 174
 175                 for (i = 0; i < MAXMAILERS; i++)
 176                 {
 177                         stats.stat_nf[i] += Stat.stat_nf[i];
 178                         stats.stat_bf[i] += Stat.stat_bf[i];
 179                         stats.stat_nt[i] += Stat.stat_nt[i];
 180                         stats.stat_bt[i] += Stat.stat_bt[i];
 181                         stats.stat_nr[i] += Stat.stat_nr[i];
 182                         stats.stat_nd[i] += Stat.stat_nd[i];
 183 #if _FFR_QUARANTINE
 184                         stats.stat_nq[i] += Stat.stat_nq[i];
 185 #endif /* _FFR_QUARANTINE */
 186                 }
 187                 stats.stat_cr += Stat.stat_cr;
 188                 stats.stat_ct += Stat.stat_ct;
 189                 stats.stat_cf += Stat.stat_cf;
 190         }
 191         else
 192                 memmove((char *) &stats, (char *) &Stat, sizeof stats);
 193
 194         /* write out results */
 195         (void) lseek(fd, (off_t) 0, 0);
 196         (void) write(fd, (char *) &stats, sizeof stats);
 197         (void) close(fd);
 198
 199         /* clear the structure to avoid future disappointment */
 200         clearstats();
 201         entered = false;
 202 }