contrib/ipfilter/lib/parsefields.c

   1 #include "ipf.h"
   2
   3 extern int nohdrfields;
   4
   5 wordtab_t *parsefields(table, arg)
   6         wordtab_t *table;
   7         char *arg;
   8 {
   9         wordtab_t *f, *fields;
  10         char *s, *t;
  11         int num;
  12
  13         fields = NULL;
  14         num = 0;
  15
  16         for (s = strtok(arg, ","); s != NULL; s = strtok(NULL, ",")) {
  17                 t = strchr(s, '=');
  18                 if (t != NULL) {
  19                         *t++ = '\0';
  20                         if (*t == '\0')
  21                                 nohdrfields = 1;
  22                 }
  23
  24                 f = findword(table, s);
  25                 if (f == NULL) {
  26                         fprintf(stderr, "Unknown field '%s'\n", s);
  27                         exit(1);
  28                 }
  29
  30                 num++;
  31                 if (fields == NULL) {
  32                         fields = malloc(2 * sizeof(*fields));
  33                 } else {
  34                         fields = realloc(fields, (num + 1) * sizeof(*fields));
  35                 }
  36
  37                 if (t == NULL) {
  38                         fields[num - 1].w_word = f->w_word;
  39                 } else {
  40                         fields[num - 1].w_word = t;
  41                 }
  42                 fields[num - 1].w_value = f->w_value;
  43                 fields[num].w_word = NULL;
  44                 fields[num].w_value = 0;
  45         }
  46
  47         return fields;
  48 }