xioparam.c

   1 /* source: xioparam.c */
   2 /* Copyright Gerhard Rieger and contributors (see file CHANGES) */
   3 /* Published under the GNU General Public License V.2, see file COPYING */
   4
   5 /* this file contains the source for xio options handling */
   6
   7 #include "xiosysincludes.h"
   8 #include "xioopen.h"
   9
  10 /*#include "xioparam.h" are all in xio.h */
  11
  12 /* options that can be applied to this module */
  13 xioparms_t xioparms = {
  14    false,       /* strictopts */
  15    "!!",        /* pipesep */
  16    ":",         /* paramsep */
  17    ",",         /* optionsep */
  18    ':',         /* ip4portsep */
  19    ':',         /* ip6portsep */
  20    '\0',        /* logopt */
  21    NULL,        /* syslogfac */
  22    WITH_DEFAULT_IPV,    /* default_ip */
  23    WITH_DEFAULT_IPV,    /* preferred_ip */
  24    false,       /* experimental */
  25    NULL,        /* sniffleft_name */
  26    NULL,        /* sniffright_name */
  27    8192         /* bufsiz */
  28 } ;
  29
  30
  31 /* allow application to set xioopen options */
  32 int xiosetopt(char what, const char *arg) {
  33    switch (what) {
  34    case 's': xioparms.strictopts = true; break;
  35    case 'p': if ((xioparms.pipesep = strdup(arg)) == NULL) {
  36          Error1("strdup("F_Zu"): out of memory", strlen(arg)+1);
  37          return -1;
  38       }
  39       break;
  40    case 'o': xioparms.ip4portsep = arg[0];
  41       if (arg[1] != '\0') {
  42          Error2("xiosetopt('%c', \"%s\"): port separator must be single character",
  43                 what, arg);
  44          return -1;
  45       }
  46       break;
  47    case 'l': xioparms.logopt = *arg; break;
  48    case 'y': xioparms.syslogfac = arg; break;
  49    case 'r': xioparms.sniffleft_name = arg; break;
  50    case 'R': xioparms.sniffright_name = arg; break;
  51    default:
  52       Error2("xiosetopt('%c', \"%s\"): unknown option",
  53              what, arg?arg:"NULL");
  54       return -1;
  55    }
  56    return 0;
  57 }
  58
  59
  60 int xioinqopt(char what, char *arg, size_t n) {
  61    switch (what) {
  62    case 's': return xioparms.strictopts;
  63    case 'p':
  64       arg[0] = '\0'; strncat(arg, xioparms.pipesep, n-1);
  65       return 0;
  66    case 'o': return xioparms.ip4portsep;
  67    case 'l': return xioparms.logopt;
  68    case 'r':
  69       if (xioparms.sniffleft_name == NULL) {
  70          return 1;
  71       }
  72       if (n < strlen(xioparms.sniffleft_name)+1) {
  73          return -1;
  74       }
  75       arg[0] = '\0';
  76       strncat(arg, xioparms.sniffleft_name, n-1);
  77       return 0;
  78    case 'R':
  79       if (xioparms.sniffright_name == NULL) {
  80          return 1;
  81       }
  82       if (n < strlen(xioparms.sniffright_name)+1) {
  83          return -1;
  84       }
  85       arg[0] = '\0';
  86       strncat(arg, xioparms.sniffright_name, n-1);
  87       return 0;
  88    default:
  89       Error3("xioinqopt('%c', \"%s\", "F_Zu"): unknown option",
  90              what, arg, n);
  91       return -1;
  92    }
  93    return 0;
  94 }