src/parser.c

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2011 Daniel Borkmann.
   5  * Subject to the GPL, version 2.
   6  */
   7
   8 #include <string.h>
   9 #include <ctype.h>
  10 #include <stdint.h>
  11
  12 #include "parser.h"
  13 #include "die.h"
  14
  15 char *getuint(char *in, uint32_t *out)
  16 {
  17         char *pt = in, tmp;
  18         char *endptr = NULL;
  19
  20         while (*in && (isdigit(*in) || isxdigit(*in) || *in == 'x'))
  21                 in++;
  22         if (!*in)
  23                 panic("Syntax error!\n");
  24
  25         errno = 0;
  26
  27         tmp = *in;
  28         *in = 0;
  29         *out = strtoul(pt, &endptr, 0);
  30
  31         if ((endptr != NULL && *endptr != '\0') || errno != 0) {
  32                 panic("Syntax error!\n");
  33         }
  34
  35         *in = tmp;
  36
  37         return in;
  38 }
  39
  40 char *strtrim_right(register char *p, register char c)
  41 {
  42         register char *end;
  43         register int len;
  44
  45         len = strlen(p);
  46         while (*p && len) {
  47                 end = p + len - 1;
  48                 if (c == *end)
  49                         *end = 0;
  50                 else
  51                         break;
  52                 len = strlen(p);
  53         }
  54
  55         return p;
  56 }
  57
  58 char *strtrim_left(register char *p, register char c)
  59 {
  60         register int len;
  61
  62         len = strlen(p);
  63         while (*p && len--) {
  64                 if (c == *p)
  65                         p++;
  66                 else
  67                         break;
  68         }
  69
  70         return p;
  71 }