lib/ntlmauth/support_bits.cci

   1 /*
   2  * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef SQUID_LIBNTLMAUTH_SUPPORT_BITS_CCI
  10 #define SQUID_LIBNTLMAUTH_SUPPORT_BITS_CCI
  11
  12 #if HAVE_STRING_H
  13 #include <string.h>
  14 #endif
  15
  16 /*
  17  * Defines several functions which are used and mutually shared by the NTLM helpers
  18  * These do not (yet) have a defined stable home to go to.
  19  * For now include this file into helper main .cc where needed.
  20  */
  21
  22 /* makes a null-terminated string upper-case. Changes CONTENTS! */
  23 inline void
  24 uc(char *string)
  25 {
  26     char *p = string, c;
  27     while ((c = *p)) {
  28         *p = xtoupper(c);
  29         ++p;
  30     }
  31 }
  32
  33 /* makes a null-terminated string lower-case. Changes CONTENTS! */
  34 inline void
  35 lc(char *string)
  36 {
  37     char *p = string, c;
  38     while ((c = *p)) {
  39         *p = xtolower(c);
  40         ++p;
  41     }
  42 }
  43
  44 inline void
  45 hex_dump(unsigned char *data, int size)
  46 {
  47     /* dumps size bytes of *data to stdout. Looks like:
  48      * [0000] 75 6E 6B 6E 6F 77 6E 20
  49      *                  30 FF 00 00 00 00 39 00 unknown 0.....9.
  50      * (in a single line of course)
  51      */
  52
  53     if (!data)
  54         return;
  55
  56     if (debug_enabled) {
  57         unsigned char *p = data;
  58         unsigned char c;
  59         int n;
  60         char bytestr[4] = {0};
  61         char addrstr[10] = {0};
  62         char hexstr[16 * 3 + 5] = {0};
  63         char charstr[16 * 1 + 5] = {0};
  64         for (n = 1; n <= size; ++n) {
  65             if (n % 16 == 1) {
  66                 /* store address for this line */
  67                 snprintf(addrstr, sizeof(addrstr), "%.4x", (int) (p - data));
  68             }
  69             c = *p;
  70             if (xisalnum(c) == 0) {
  71                 c = '.';
  72             }
  73             /* store hex str (for left side) */
  74             snprintf(bytestr, sizeof(bytestr), "%02X ", *p);
  75             strncat(hexstr, bytestr, sizeof(hexstr) - strlen(hexstr) - 1);
  76
  77             /* store char str (for right side) */
  78             snprintf(bytestr, sizeof(bytestr), "%c", c);
  79             strncat(charstr, bytestr, sizeof(charstr) - strlen(charstr) - 1);
  80
  81             if (n % 16 == 0) {
  82                 /* line completed */
  83                 fprintf(stderr, "[%4.4s]   %-50.50s  %s\n", addrstr, hexstr, charstr);
  84                 hexstr[0] = 0;
  85                 charstr[0] = 0;
  86             } else if (n % 8 == 0) {
  87                 /* half line: add whitespaces */
  88                 strncat(hexstr, "  ", sizeof(hexstr) - strlen(hexstr) - 1);
  89                 strncat(charstr, " ", sizeof(charstr) - strlen(charstr) - 1);
  90             }
  91             ++p;                /* next byte */
  92         }
  93
  94         if (strlen(hexstr) > 0) {
  95             /* print rest of buffer if not empty */
  96             fprintf(stderr, "[%4.4s]   %-50.50s  %s\n", addrstr, hexstr, charstr);
  97         }
  98     }
  99
 100     if (0) { //temporary hack to keep the linker happy
 101         uc(NULL);
 102         lc(NULL);
 103         hex_dump(NULL,0);
 104     }
 105
 106 }
 107
 108 #endif /* SQUID_LIBNTLMAUTH_SUPPORT_BITS_CCI */
 109