trusts/formats.c

   1 #include <stdio.h>
   2 #include <stdint.h>
   3 #include <time.h>
   4 #include <string.h>
   5 #include <stdlib.h>
   6 #include "../lib/strlfunc.h"
   7 #include "trusts.h"
   8
   9 int trusts_parsecidr(const char *host, uint32_t *ip, short *mask) {
  10   unsigned int octet1 = 0, octet2 = 0, octet3 = 0, octet4 = 0, umask = 32;
  11
  12   if(sscanf(host, "%u.%u.%u.%u/%u", &octet1, &octet2, &octet3, &octet4, &umask) != 5)
  13     if(sscanf(host, "%u.%u.%u/%u", &octet1, &octet2, &octet3, &umask) != 4)
  14       if(sscanf(host, "%u.%u/%u", &octet1, &octet2, &umask) != 3)
  15         if(sscanf(host, "%u/%u", &octet1, &umask) != 2)
  16           if(sscanf(host, "%u.%u.%u.%u", &octet1, &octet2, &octet3, &octet4) != 4)
  17             return 0;
  18
  19   if(octet1 > 255 || octet2 > 255 || octet3 > 255 || octet4 > 255 || umask > 32)
  20     return 0;
  21
  22   *ip = (octet1 << 24) | (octet2 << 16) | (octet3 << 8) | octet4;
  23   *mask = umask;
  24
  25   return 1;
  26 }
  27
  28 /* returns mask pre-anded */
  29 int trusts_str2cidr(const char *host, uint32_t *ip, uint32_t *mask) {
  30   uint32_t result;
  31   short smask;
  32
  33   if(!trusts_parsecidr(host, &result, &smask))
  34     return 0;
  35
  36   if(smask == 0) {
  37     *mask = 0;
  38   } else {
  39     *mask = 0xffffffff << (32 - smask);
  40   }
  41   *ip = result & *mask;
  42
  43   return 1;
  44 }
  45
  46 char *trusts_cidr2str(uint32_t ip, uint32_t mask) {
  47   static char buf[100];
  48   char maskbuf[10];
  49
  50   if(mask != 0) {
  51     /* count number of trailing zeros */
  52     float f = (float)(mask & -mask);
  53
  54     mask = 32 - ((*(unsigned int *)&f >> 23) - 0x7f);
  55   }
  56
  57   if(mask < 32) {
  58     snprintf(maskbuf, sizeof(maskbuf), "/%u", mask);
  59   } else {
  60     maskbuf[0] = '\0';
  61   }
  62
  63   snprintf(buf, sizeof(buf), "%u.%u.%u.%u%s", (ip >> 24) & 0xff, (ip >> 16) & 0xff, (ip >> 8) & 0xff, ip & 0xff, maskbuf);
  64
  65   return buf;
  66 }
  67
  68 char *trusts_timetostr(time_t t) {
  69   static char buf[100];
  70
  71   strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&t));
  72
  73   return buf;
  74 }
  75
  76 char *dumpth(trusthost *th, int oformat) {
  77   static char buf[512];
  78
  79   if(oformat) {
  80     snprintf(buf, sizeof(buf), "#%u,%s,%u,%u,%jd", th->group->id, trusts_cidr2str(th->ip, th->mask), th->count, th->maxusage, (intmax_t)th->lastseen);
  81   } else {
  82     snprintf(buf, sizeof(buf), "%u,%s,%u,%u,%jd", th->group->id, trusts_cidr2str(th->ip, th->mask), th->id, th->maxusage, (intmax_t)th->lastseen);
  83   }
  84
  85   return buf;
  86 }
  87
  88 char *dumptg(trustgroup *tg, int oformat) {
  89   static char buf[512];
  90
  91   if(oformat) {
  92     snprintf(buf, sizeof(buf), "#%u,%s,%u,%u,%d,%u,%u,%jd,%jd,%jd,%s,%s,%s", tg->id, tg->name->content, tg->count, tg->trustedfor, tg->mode, tg->maxperident, tg->maxusage, (intmax_t)tg->expires, (intmax_t)tg->lastseen, (intmax_t)tg->lastmaxusereset, tg->createdby->content, tg->contact->content, tg->comment->content);
  93   } else {
  94     snprintf(buf, sizeof(buf), "%u,%s,%u,%d,%u,%u,%jd,%jd,%jd,%s,%s,%s", tg->id, tg->name->content, tg->trustedfor, tg->mode, tg->maxperident, tg->maxusage, (intmax_t)tg->expires, (intmax_t)tg->lastseen, (intmax_t)tg->lastmaxusereset, tg->createdby->content, tg->contact->content, tg->comment->content);
  95   }
  96
  97   return buf;
  98 }
  99
 100 int parsetg(char *buf, trustgroup *tg, int oformat) {
 101   char *line, *createdby, *contact, *comment, *name, *id;
 102   unsigned long expires, lastseen, lastmaxusereset;
 103   char xbuf[1024];
 104   int pos;
 105
 106 /* #id,ticket35153,14,20,1,1,17,1879854575,1222639249,0,nterfacer,Qwhois&2120764,Non-Commercial Bouncer (Created by: doomie)
 107       ,name       ,current
 108                      ,trustedfor
 109                         ,mode
 110                           ,maxperident
 111                             ,maxusage
 112                                ,expires  ,lastseen   ,lastmaxusereset
 113                                                        ,createdby,contact       ,comment
 114 */
 115   int r;
 116
 117   strlcpy(xbuf, buf, sizeof(xbuf));
 118   line = xbuf;
 119
 120   if(!*line)
 121     return 0;
 122
 123   if(oformat) {
 124     if(line[0] != '#')
 125       return 0;
 126     line++;
 127   }
 128
 129   id = line;
 130   line = strchr(xbuf, ',');
 131   if(!line)
 132     return 0;
 133   *line++ = '\0';
 134
 135   if(oformat && (id[0] == '#'))
 136     id++;
 137
 138   tg->id = strtoul(id, NULL, 10);
 139   if(!tg->id)
 140     return 0;
 141
 142   name = line;
 143   line = strchr(line, ',');
 144   if(!line)
 145     return 0;
 146   *line++ = '\0';
 147
 148   if(oformat) {
 149     r = sscanf(line, "%*u,%u,%u,%u,%u,%lu,%lu,%lu,%n",
 150                /*current, */ &tg->trustedfor, &tg->mode, &tg->maxperident,
 151                &tg->maxusage, &expires, &lastseen, &lastmaxusereset, &pos);
 152   } else {
 153     r = sscanf(line, "%u,%u,%u,%u,%lu,%lu,%lu,%n",
 154                &tg->trustedfor, &tg->mode, &tg->maxperident,
 155                &tg->maxusage, &expires, &lastseen, &lastmaxusereset, &pos);
 156   }
 157   if(r != 7)
 158     return 0;
 159
 160   tg->expires = (time_t)expires;
 161   tg->lastseen = (time_t)lastseen;
 162   tg->lastmaxusereset = (time_t)lastmaxusereset;
 163
 164   createdby = &line[pos];
 165   contact = strchr(createdby, ',');
 166   if(!contact)
 167     return 0;
 168   *contact++ = '\0';
 169
 170   comment = strchr(contact, ',');
 171   if(!comment)
 172     return 0;
 173   *comment++ = '\0';
 174
 175   tg->name = getsstring(name, TRUSTNAMELEN);
 176   tg->createdby = getsstring(createdby, CREATEDBYLEN);
 177   tg->comment = getsstring(comment, COMMENTLEN);
 178   tg->contact = getsstring(contact, CONTACTLEN);
 179   if(!tg->name || !tg->createdby || !tg->comment || !tg->contact) {
 180     freesstring(tg->name);
 181     freesstring(tg->createdby);
 182     freesstring(tg->comment);
 183     freesstring(tg->contact);
 184     return 0;
 185   }
 186
 187   return 1;
 188 }
 189
 190 int parseth(char *line, trusthost *th, unsigned int *tgid, int oformat) {
 191   unsigned long lastseen;
 192   char *ip, xbuf[1024], *id;
 193
 194 /* #id,213.230.192.128/26,20,23,1222732944
 195        ip                ,cur,max,lastseen */
 196
 197   strlcpy(xbuf, line, sizeof(xbuf));
 198   id = line = xbuf;
 199
 200   line = strchr(line, ',');
 201   if(!line)
 202     return 0;
 203   *line++ = '\0';
 204
 205   if(oformat && (id[0] == '#'))
 206     id++;
 207
 208   *tgid = strtoul(id, NULL, 10);
 209   if(!*tgid)
 210     return 0;
 211
 212   ip = line;
 213   line = strchr(line, ',');
 214   if(!line)
 215     return 0;
 216   *line++ = '\0';
 217
 218   if(!trusts_str2cidr(ip, &th->ip, &th->mask))
 219     return 0;
 220
 221   if(oformat) {
 222     if(sscanf(line, "%*u,%u,%lu", /*current, */&th->maxusage, &lastseen) != 2)
 223       return 0;
 224   } else {
 225     if(sscanf(line, "%u,%u,%lu", &th->id, &th->maxusage, &lastseen) != 3)
 226       return 0;
 227   }
 228
 229   th->lastseen = (time_t)lastseen;
 230
 231   return 1;
 232 }
 233
 234 char *rtrim(char *buf) {
 235   static char obuf[1024];
 236   size_t len = strlcpy(obuf, buf, sizeof(obuf));
 237
 238   if((len < sizeof(obuf)) && (len > 0)) {
 239     int i;
 240     for(i=len-1;i>=0;i--) {
 241       if(obuf[i] != ' ')
 242         break;
 243
 244       obuf[i] = '\0';
 245     }
 246   }
 247
 248   return obuf;
 249 }