obsolete-buildroot/sources/dnsmasq1-openwrt.patch

   1 diff -x CVS -urN dnsmasq-1.18/dhcp.c dnsmasq.old/dhcp.c
   2 --- dnsmasq-1.18/dhcp.c 2003-11-05 08:30:20.000000000 -0600
   3 +++ dnsmasq.old/dhcp.c  2004-01-05 23:40:11.000000000 -0600
   4 @@ -15,14 +15,20 @@
   5
   6  #include "dnsmasq.h"
   7
   8 -static int next_token (char *token, int buffsize, FILE * fp);
   9 +struct dhcpOfferedAddr {
  10 +        u_int8_t hostname[16];
  11 +        u_int8_t chaddr[16];
  12 +        u_int32_t yiaddr;       /* network order */
  13 +        u_int32_t expires;      /* host order */
  14 +};
  15
  16  void load_dhcp(char *file, char *suffix, time_t now, char *hostname)
  17  {
  18 -  char token[MAXTOK], *dot;
  19 +  char *dot;
  20    struct all_addr host_address;
  21 -  time_t ttd, tts;
  22 +  time_t ttd;
  23    FILE *fp = fopen (file, "r");
  24 +  struct dhcpOfferedAddr lease;
  25
  26    if (!fp)
  27      {
  28 @@ -34,154 +40,45 @@
  29
  30    /* remove all existing DHCP cache entries */
  31    cache_unhash_dhcp();
  32 -
  33 -  while ((next_token(token, MAXTOK, fp)))
  34 -    {
  35 -      if (strcmp(token, "lease") == 0)
  36 -        {
  37 -          hostname[0] = '\0';
  38 -         ttd = tts = (time_t)(-1);
  39 -#ifdef HAVE_IPV6
  40 -          if (next_token(token, MAXTOK, fp) &&
  41 -             inet_pton(AF_INET, token, &host_address))
  42 -#else
  43 -         if (next_token(token, MAXTOK, fp) &&
  44 -             (host_address.addr4.s_addr = inet_addr(token)) != (in_addr_t) -1)
  45 -#endif
  46 -            {
  47 -              if (next_token(token, MAXTOK, fp) && *token == '{')
  48 -                {
  49 -                  while (next_token(token, MAXTOK, fp) && *token != '}')
  50 +
  51 +  while (fread(&lease, sizeof(lease), 1, fp)) {
  52 +         host_address.addr.addr4.s_addr = lease.yiaddr;
  53 +
  54 +       strcpy(hostname,lease.hostname);
  55 +       if (lease.expires>(unsigned)now)
  56 +       ttd = lease.expires;
  57 +       else
  58 +       ttd = -1;
  59 +                  dot = strchr(hostname, '.');
  60 +                  if (suffix)
  61                      {
  62 -                      if ((strcmp(token, "client-hostname") == 0) ||
  63 -                         (strcmp(token, "hostname") == 0))
  64 -                       {
  65 -                         if (next_token(hostname, MAXDNAME, fp))
  66 -                           if (!canonicalise(hostname))
  67 -                             {
  68 -                               *hostname = 0;
  69 -                               syslog(LOG_ERR, "bad name in %s", file);
  70 -                             }
  71 -                       }
  72 -                      else if ((strcmp(token, "ends") == 0) ||
  73 -                              (strcmp(token, "starts") == 0))
  74 -                        {
  75 -                          struct tm lease_time;
  76 -                         int is_ends = (strcmp(token, "ends") == 0);
  77 -                         if (next_token(token, MAXTOK, fp) &&  /* skip weekday */
  78 -                             next_token(token, MAXTOK, fp) &&  /* Get date from lease file */
  79 -                             sscanf (token, "%d/%d/%d",
  80 -                                     &lease_time.tm_year,
  81 -                                     &lease_time.tm_mon,
  82 -                                     &lease_time.tm_mday) == 3 &&
  83 -                             next_token(token, MAXTOK, fp) &&
  84 -                             sscanf (token, "%d:%d:%d:",
  85 -                                     &lease_time.tm_hour,
  86 -                                     &lease_time.tm_min,
  87 -                                     &lease_time.tm_sec) == 3)
  88 -                           {
  89 -                             /* There doesn't seem to be a universally available library function
  90 -                                which converts broken-down _GMT_ time to seconds-in-epoch.
  91 -                                The following was borrowed from ISC dhcpd sources, where
  92 -                                 it is noted that it might not be entirely accurate for odd seconds.
  93 -                                Since we're trying to get the same answer as dhcpd, that's just
  94 -                                fine here. */
  95 -                             static int months [11] = { 31, 59, 90, 120, 151, 181,
  96 -                                                        212, 243, 273, 304, 334 };
  97 -                             time_t time = ((((((365 * (lease_time.tm_year - 1970) + /* Days in years since '70 */
  98 -                                                 (lease_time.tm_year - 1969) / 4 +   /* Leap days since '70 */
  99 -                                                 (lease_time.tm_mon > 1                /* Days in months this year */
 100 -                                                  ? months [lease_time.tm_mon - 2]
 101 -                                                  : 0) +
 102 -                                                 (lease_time.tm_mon > 2 &&         /* Leap day this year */
 103 -                                                  !((lease_time.tm_year - 1972) & 3)) +
 104 -                                                 lease_time.tm_mday - 1) * 24) +   /* Day of month */
 105 -                                               lease_time.tm_hour) * 60) +
 106 -                                             lease_time.tm_min) * 60) + lease_time.tm_sec;
 107 -                             if (is_ends)
 108 -                               ttd = time;
 109 -                             else
 110 -                               tts = time;                         }
 111 +                      if (dot)
 112 +                        { /* suffix and lease has ending: must match */
 113 +                          if (strcmp(dot+1, suffix) != 0)
 114 +                            syslog(LOG_WARNING,
 115 +                                   "Ignoring DHCP lease for %s because it has an illegal domain part", hostname);
 116 +                          else
 117 +                            cache_add_dhcp_entry(hostname, &host_address, ttd, F_REVERSE);
 118                          }
 119 -                   }
 120 -
 121 -                 /* missing info? */
 122 -                 if (!*hostname)
 123 -                   continue;
 124 -                 if (ttd == (time_t)(-1))
 125 -                   continue;
 126 -
 127 -                 /* infinite lease to is represented by -1 */
 128 -                 /* This makes is to the lease file as
 129 -                    start time one less than end time. */
 130 -                 /* We use -1 as infinite in ttd */
 131 -                 if ((tts != -1) && (ttd == tts - 1))
 132 -                   ttd = (time_t)(-1);
 133 -                 else if (ttd < now)
 134 -                   continue;
 135 -
 136 -                 dot = strchr(hostname, '.');
 137 -                 if (suffix)
 138 -                   {
 139 -                     if (dot)
 140 -                       { /* suffix and lease has ending: must match */
 141 -                         if (strcmp(dot+1, suffix) != 0)
 142 -                           syslog(LOG_WARNING,
 143 -                                  "Ignoring DHCP lease for %s because it has an illegal domain part", hostname);
 144 -                         else
 145 -                           cache_add_dhcp_entry(hostname, &host_address, ttd, F_REVERSE);
 146 -                       }
 147 -                     else
 148 -                       { /* suffix exists but lease has no ending - add lease and lease.suffix */
 149 -                         cache_add_dhcp_entry(hostname, &host_address, ttd, 0);
 150 -                         strncat(hostname, ".", MAXDNAME);
 151 -                         strncat(hostname, suffix, MAXDNAME);
 152 -                         hostname[MAXDNAME-1] = 0; /* in case strncat hit limit */
 153 -                         /* Make FQDN canonical for reverse lookups */
 154 -                         cache_add_dhcp_entry(hostname, &host_address, ttd, F_REVERSE);
 155 -                       }
 156 -                   }
 157 -                 else
 158 -                   { /* no suffix */
 159 -                     if (dot) /* no lease ending allowed */
 160 -                       syslog(LOG_WARNING,
 161 -                              "Ignoring DHCP lease for %s because it has a domain part", hostname);
 162 -                     else
 163 -                       cache_add_dhcp_entry(hostname, &host_address, ttd, F_REVERSE);
 164 -                   }
 165 -               }
 166 -           }
 167 -       }
 168 -    }
 169 +                      else
 170 +                        { /* suffix exists but lease has no ending - add lease and lease.suffix */
 171 +                          cache_add_dhcp_entry(hostname, &host_address, ttd, 0);
 172 +                          strncat(hostname, ".", MAXDNAME);
 173 +                          strncat(hostname, suffix, MAXDNAME);
 174 +                          hostname[MAXDNAME-1] = 0; /* in case strncat hit limit */
 175 +                          /* Make FQDN canonical for reverse lookups */
 176 +                          cache_add_dhcp_entry(hostname, &host_address, ttd, F_REVERSE);
 177 +                        }
 178 +                    }
 179 +                  else
 180 +                    { /* no suffix */
 181 +                      if (dot) /* no lease ending allowed */
 182 +                        syslog(LOG_WARNING,
 183 +                               "Ignoring DHCP lease for %s because it has a domain part", hostname);
 184 +                      else
 185 +                        cache_add_dhcp_entry(hostname, &host_address, ttd, F_REVERSE);
 186 +                    }
 187 +  }
 188    fclose(fp);
 189
 190  }
 191 -
 192 -static int next_token (char *token, int buffsize, FILE * fp)
 193 -{
 194 -  int c, count = 0;
 195 -  char *cp = token;
 196 -
 197 -  while((c = getc(fp)) != EOF)
 198 -    {
 199 -      if (c == '#')
 200 -       do { c = getc(fp); } while (c != '\n' && c != EOF);
 201 -
 202 -      if (c == ' ' || c == '\t' || c == '\n' || c == ';')
 203 -       {
 204 -         if (count)
 205 -           break;
 206 -       }
 207 -      else if ((c != '"') && (count<buffsize-1))
 208 -       {
 209 -         *cp++ = c;
 210 -         count++;
 211 -       }
 212 -    }
 213 -
 214 -  *cp = 0;
 215 -  return count ? 1 : 0;
 216 -}
 217 -
 218 -
 219 -