print.c

 
#include <winpr/config.h>
#include <winpr/debug.h>
 
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
 
#include <winpr/crt.h>
#include <winpr/print.h>
 
#include "../log.h"
 
#ifndef MIN
#define MIN(a, b) (a) < (b) ? (a) : (b)
#endif
 
void winpr_HexDump(const char* tag, UINT32 level, const void* data, size_t length)
{
  wLog* log = WLog_Get(tag);
  winpr_HexLogDump(log, level, data, length);
}
 
void winpr_HexLogDump(wLog* log, UINT32 lvl, const void* data, size_t length)
{
  const BYTE* p = data;
  size_t line = 0;
  size_t offset = 0;
  const size_t maxlen = 20; /* 64bit SIZE_MAX as decimal */
  /* String line length:
   * prefix          '[1234] '
   * hexdump         '01 02 03 04'
   * separator       '   '
   * ASIC line       'ab..cd'
   * zero terminator '\0'
   */
  const size_t blen = (maxlen + 3ULL) + (WINPR_HEXDUMP_LINE_LENGTH * 3ULL) + 3ULL +
                      WINPR_HEXDUMP_LINE_LENGTH + 1ULL;
  size_t pos = 0;
 
  char* buffer = NULL;
 
  if (!WLog_IsLevelActive(log, lvl))
    return;
 
  if (!log)
    return;
 
  buffer = malloc(blen);
 
  if (!buffer)
  {
    char ebuffer[256] = { 0 };
    WLog_Print(log, WLOG_ERROR, "malloc(%" PRIuz ") failed with [%" PRIuz "] %s", blen, errno,
               winpr_strerror(errno, ebuffer, sizeof(ebuffer)));
    return;
  }
 
  while (offset < length)
  {
    int rc = _snprintf(&buffer[pos], blen - pos, "%04" PRIuz " ", offset);
 
    if (rc < 0)
      goto fail;
 
    pos += (size_t)rc;
    line = length - offset;
 
    if (line > WINPR_HEXDUMP_LINE_LENGTH)
      line = WINPR_HEXDUMP_LINE_LENGTH;
 
    size_t i = 0;
    for (; i < line; i++)
    {
      rc = _snprintf(&buffer[pos], blen - pos, "%02" PRIx8 " ", p[i]);
 
      if (rc < 0)
        goto fail;
 
      pos += (size_t)rc;
    }
 
    for (; i < WINPR_HEXDUMP_LINE_LENGTH; i++)
    {
      rc = _snprintf(&buffer[pos], blen - pos, "   ");
 
      if (rc < 0)
        goto fail;
 
      pos += (size_t)rc;
    }
 
    for (size_t j = 0; j < line; j++)
    {
      rc = _snprintf(&buffer[pos], blen - pos, "%c",
                     (p[j] >= 0x20 && p[j] < 0x7F) ? (char)p[j] : '.');
 
      if (rc < 0)
        goto fail;
 
      pos += (size_t)rc;
    }
 
    WLog_Print(log, lvl, "%s", buffer);
    offset += line;
    p += line;
    pos = 0;
  }
 
  WLog_Print(log, lvl, "[length=%" PRIuz "] ", length);
fail:
  free(buffer);
}
 
void winpr_CArrayDump(const char* tag, UINT32 level, const void* data, size_t length, size_t width)
{
  const BYTE* p = data;
  size_t offset = 0;
  const size_t llen = ((length > width) ? width : length) * 4ull + 1ull;
  size_t pos = 0;
  char* buffer = malloc(llen);
 
  if (!buffer)
  {
    char ebuffer[256] = { 0 };
    WLog_ERR(tag, "malloc(%" PRIuz ") failed with [%d] %s", llen, errno,
             winpr_strerror(errno, ebuffer, sizeof(ebuffer)));
    return;
  }
 
  while (offset < length)
  {
    size_t line = length - offset;
 
    if (line > width)
      line = width;
 
    pos = 0;
 
    for (size_t i = 0; i < line; i++)
    {
      const int rc = _snprintf(&buffer[pos], llen - pos, "\\x%02" PRIX8 "", p[i]);
      if (rc < 0)
        goto fail;
      pos += (size_t)rc;
    }
 
    WLog_LVL(tag, level, "%s", buffer);
    offset += line;
    p += line;
  }
 
fail:
  free(buffer);
}
 
static BYTE value(char c)
{
  if ((c >= '0') && (c <= '9'))
    return c - '0';
  if ((c >= 'A') && (c <= 'F'))
    return 10 + c - 'A';
  if ((c >= 'a') && (c <= 'f'))
    return 10 + c - 'a';
  return 0;
}
 
size_t winpr_HexStringToBinBuffer(const char* str, size_t strLength, BYTE* data, size_t dataLength)
{
  size_t y = 0;
  size_t maxStrLen = 0;
  if (!str || !data || (strLength == 0) || (dataLength == 0))
    return 0;
 
  maxStrLen = strnlen(str, strLength);
  for (size_t x = 0; x < maxStrLen;)
  {
    BYTE val = value(str[x++]);
    if (x < maxStrLen)
      val = (BYTE)(val << 4) | (value(str[x++]));
    if (x < maxStrLen)
    {
      if (str[x] == ' ')
        x++;
    }
    data[y++] = val;
    if (y >= dataLength)
      return y;
  }
  return y;
}
 
size_t winpr_BinToHexStringBuffer(const BYTE* data, size_t length, char* dstStr, size_t dstSize,
                                  BOOL space)
{
  const size_t n = space ? 3 : 2;
  const char bin2hex[] = "0123456789ABCDEF";
  const size_t maxLength = MIN(length, dstSize / n);
 
  if (!data || !dstStr || (length == 0) || (dstSize == 0))
    return 0;
 
  for (size_t i = 0; i < maxLength; i++)
  {
    const int ln = data[i] & 0xF;
    const int hn = (data[i] >> 4) & 0xF;
    char* dst = &dstStr[i * n];
 
    dst[0] = bin2hex[hn];
    dst[1] = bin2hex[ln];
 
    if (space)
      dst[2] = ' ';
  }
 
  if (space && (maxLength > 0))
  {
    dstStr[maxLength * n - 1] = '\0';
    return maxLength * n - 1;
  }
  dstStr[maxLength * n] = '\0';
  return maxLength * n;
}
 
char* winpr_BinToHexString(const BYTE* data, size_t length, BOOL space)
{
  size_t rc = 0;
  const size_t n = space ? 3 : 2;
  const size_t size = (length + 1ULL) * n;
  char* p = (char*)malloc(size);
 
  if (!p)
    return NULL;
 
  rc = winpr_BinToHexStringBuffer(data, length, p, size, space);
  if (rc == 0)
  {
    free(p);
    return NULL;
  }
 
  return p;
}