src/Parsing.cc

   1 /*
   2  * $Id$
   3  *
   4  * DEBUG: section 3     Configuration File Parsing
   5  * AUTHOR: Harvest Derived
   6  *
   7  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   8  * ----------------------------------------------------------
   9  *
  10  *  Squid is the result of efforts by numerous individuals from
  11  *  the Internet community; see the CONTRIBUTORS file for full
  12  *  details.   Many organizations have provided support for Squid's
  13  *  development; see the SPONSORS file for full details.  Squid is
  14  *  Copyrighted (C) 2001 by the Regents of the University of
  15  *  California; see the COPYRIGHT file for full details.  Squid
  16  *  incorporates software developed and/or copyrighted by other
  17  *  sources; see the CREDITS file for full details.
  18  *
  19  *  This program is free software; you can redistribute it and/or modify
  20  *  it under the terms of the GNU General Public License as published by
  21  *  the Free Software Foundation; either version 2 of the License, or
  22  *  (at your option) any later version.
  23  *
  24  *  This program is distributed in the hope that it will be useful,
  25  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  *  GNU General Public License for more details.
  28  *
  29  *  You should have received a copy of the GNU General Public License
  30  *  along with this program; if not, write to the Free Software
  31  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  32  *
  33  */
  34
  35 #include "config.h"
  36 #include "compat/strtoll.h"
  37 #include "Parsing.h"
  38
  39 /*
  40  * These functions is the same as atoi/l/f, except that they check for errors
  41  */
  42
  43 double
  44 xatof(const char *token)
  45 {
  46     char *end;
  47     double ret = strtod(token, &end);
  48
  49     if (ret == 0 && end == token)
  50         self_destruct();
  51
  52     return ret;
  53 }
  54
  55 int
  56 xatoi(const char *token)
  57 {
  58     return xatol(token);
  59 }
  60
  61 long
  62 xatol(const char *token)
  63 {
  64     char *end;
  65     long ret = strtol(token, &end, 10);
  66
  67     if (end == token || *end)
  68         self_destruct();
  69
  70     return ret;
  71 }
  72
  73 unsigned short
  74 xatos(const char *token)
  75 {
  76     long port = xatol(token);
  77
  78     if (port & ~0xFFFF)
  79         self_destruct();
  80
  81     return port;
  82 }
  83
  84 int64_t
  85 GetInteger64(void)
  86 {
  87     char *token = strtok(NULL, w_space);
  88     int i;
  89
  90     if (token == NULL)
  91         self_destruct();
  92
  93     i = strtoll(token, NULL, 10);
  94
  95     return i;
  96 }
  97
  98 int
  99 GetInteger(void)
 100 {
 101     char *token = strtok(NULL, w_space);
 102     int i;
 103
 104     if (token == NULL)
 105         self_destruct();
 106
 107     // %i honors 0 and 0x prefixes, which are important for things like umask
 108     if (sscanf(token, "%i", &i) != 1)
 109         self_destruct();
 110
 111     return i;
 112 }
 113
 114 u_short
 115 GetShort(void)
 116 {
 117     char *token = strtok(NULL, w_space);
 118
 119     if (token == NULL)
 120         self_destruct();
 121
 122     return xatos(token);
 123 }
 124
 125 bool
 126 StringToInt(const char *s, int &result, const char **p, int base)
 127 {
 128     if (s) {
 129         char *ptr = 0;
 130         const int h = (int) strtol(s, &ptr, base);
 131
 132         if (ptr != s && ptr) {
 133             result = h;
 134
 135             if (p)
 136                 *p = ptr;
 137
 138             return true;
 139         }
 140     }
 141
 142     return false;
 143 }
 144
 145 bool
 146 StringToInt64(const char *s, int64_t &result, const char **p, int base)
 147 {
 148     if (s) {
 149         char *ptr = 0;
 150         const int64_t h = (int64_t) strtoll(s, &ptr, base);
 151
 152         if (ptr != s && ptr) {
 153             result = h;
 154
 155             if (p)
 156                 *p = ptr;
 157
 158             return true;
 159         }
 160     }
 161
 162     return false;
 163 }
 164
 165 bool
 166 GetHostWithPort(char *token, Ip::Address *ipa)
 167 {
 168     char *t;
 169     char *host;
 170     char *tmp;
 171     unsigned short port;
 172
 173     host = NULL;
 174     port = 0;
 175
 176 #if USE_IPV6
 177     if (*token == '[') {
 178         /* [host]:port */
 179         host = token + 1;
 180         t = strchr(host, ']');
 181         if (!t)
 182             return false;
 183         *t++ = '\0';
 184         if (*t != ':')
 185             return false;
 186         port = xatos(t + 1);
 187     } else
 188 #endif
 189         if ((t = strchr(token, ':'))) {
 190             /* host:port */
 191             host = token;
 192             *t = '\0';
 193             port = xatos(t + 1);
 194
 195             if (0 == port)
 196                 return false;
 197         } else if ((port = strtol(token, &tmp, 10)), !*tmp) {
 198             /* port */
 199         } else {
 200             host = token;
 201             port = 0;
 202         }
 203
 204     if (NULL == host)
 205         ipa->SetAnyAddr();
 206     else if ( ipa->GetHostByName(host) ) /* dont use ipcache. Accept either FQDN or IPA. */
 207         (void) 0;
 208     else
 209         return false;
 210
 211     /* port MUST be set after the IPA lookup/conversion is performed. */
 212     ipa->SetPort(port);
 213
 214     return true;
 215 }