src/Parsing.cc

   1 /*
   2  * $Id$
   3  *
   4  * DEBUG: section 03    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 "squid.h"
  36 #include "compat/strtoll.h"
  37 #include "Parsing.h"
  38 #include "protos.h"
  39
  40 /*
  41  * These functions is the same as atoi/l/f, except that they check for errors
  42  */
  43
  44 double
  45 xatof(const char *token)
  46 {
  47     char *end;
  48     double ret = strtod(token, &end);
  49
  50     if (ret == 0 && end == token)
  51         self_destruct();
  52
  53     return ret;
  54 }
  55
  56 int
  57 xatoi(const char *token)
  58 {
  59     return xatol(token);
  60 }
  61
  62 long
  63 xatol(const char *token)
  64 {
  65     char *end;
  66     long ret = strtol(token, &end, 10);
  67
  68     if (end == token || *end)
  69         self_destruct();
  70
  71     return ret;
  72 }
  73
  74 unsigned short
  75 xatos(const char *token)
  76 {
  77     long port = xatol(token);
  78
  79     if (port & ~0xFFFF)
  80         self_destruct();
  81
  82     return port;
  83 }
  84
  85 int64_t
  86 GetInteger64(void)
  87 {
  88     char *token = strtok(NULL, w_space);
  89     int i;
  90
  91     if (token == NULL)
  92         self_destruct();
  93
  94     i = strtoll(token, NULL, 10);
  95
  96     return i;
  97 }
  98
  99 int
 100 GetInteger(void)
 101 {
 102     char *token = strtok(NULL, w_space);
 103     int i;
 104
 105     if (token == NULL)
 106         self_destruct();
 107
 108     // %i honors 0 and 0x prefixes, which are important for things like umask
 109     if (sscanf(token, "%i", &i) != 1)
 110         self_destruct();
 111
 112     return i;
 113 }
 114
 115 unsigned short
 116 GetShort(void)
 117 {
 118     char *token = strtok(NULL, w_space);
 119
 120     if (token == NULL)
 121         self_destruct();
 122
 123     return xatos(token);
 124 }
 125
 126 bool
 127 StringToInt(const char *s, int &result, const char **p, int base)
 128 {
 129     if (s) {
 130         char *ptr = 0;
 131         const int h = (int) strtol(s, &ptr, base);
 132
 133         if (ptr != s && ptr) {
 134             result = h;
 135
 136             if (p)
 137                 *p = ptr;
 138
 139             return true;
 140         }
 141     }
 142
 143     return false;
 144 }
 145
 146 bool
 147 StringToInt64(const char *s, int64_t &result, const char **p, int base)
 148 {
 149     if (s) {
 150         char *ptr = 0;
 151         const int64_t h = (int64_t) strtoll(s, &ptr, base);
 152
 153         if (ptr != s && ptr) {
 154             result = h;
 155
 156             if (p)
 157                 *p = ptr;
 158
 159             return true;
 160         }
 161     }
 162
 163     return false;
 164 }
 165
 166 bool
 167 GetHostWithPort(char *token, Ip::Address *ipa)
 168 {
 169     char *t;
 170     char *host;
 171     char *tmp;
 172     unsigned short port;
 173
 174     host = NULL;
 175     port = 0;
 176
 177     if (*token == '[') {
 178         /* [host]:port */
 179         host = token + 1;
 180         t = strchr(host, ']');
 181         if (!t)
 182             return false;
 183         *t = '\0';
 184         ++t;
 185         if (*t != ':')
 186             return false;
 187         port = xatos(t + 1);
 188     } else if ((t = strchr(token, ':'))) {
 189         /* host:port */
 190         host = token;
 191         *t = '\0';
 192         port = xatos(t + 1);
 193
 194         if (0 == port)
 195             return false;
 196     } else if ((port = strtol(token, &tmp, 10)), !*tmp) {
 197         /* port */
 198     } else {
 199         host = token;
 200         port = 0;
 201     }
 202
 203     if (NULL == host)
 204         ipa->SetAnyAddr();
 205     else if ( ipa->GetHostByName(host) ) /* dont use ipcache. Accept either FQDN or IPA. */
 206         (void) 0;
 207     else
 208         return false;
 209
 210     /* port MUST be set after the IPA lookup/conversion is performed. */
 211     ipa->SetPort(port);
 212
 213     return true;
 214 }