Coverage Report

Created: 2025-07-01 06:05

/src/avahi/avahi-common/utf8.c
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Count
Source (jump to first uncovered line)
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/* This file is based on the GLIB utf8 validation functions. The
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 * original license text follows. */
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/* gutf8.c - Operations on UTF-8 strings.
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 *
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 * Copyright (C) 1999 Tom Tromey
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 * Copyright (C) 2000 Red Hat, Inc.
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the
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 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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 * Boston, MA 02111-1307, USA.
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 */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include "utf8.h"
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#define UNICODE_VALID(Char)                   \
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0
    ((Char) < 0x110000 &&                     \
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0
     (((Char) & 0xFFFFF800) != 0xD800) &&     \
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0
     ((Char) < 0xFDD0 || (Char) > 0xFDEF) &&  \
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0
     ((Char) & 0xFFFE) != 0xFFFE)
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#define CONTINUATION_CHAR                           \
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0
 do {                                     \
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0
  if ((*(const unsigned char *)p & 0xc0) != 0x80) /* 10xxxxxx */ \
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0
    goto error;                                     \
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0
  val <<= 6;                                        \
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0
  val |= (*(const unsigned char *)p) & 0x3f;                     \
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0
 } while(0)
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const char *
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avahi_utf8_valid (const char *str)
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371
{
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371
  unsigned val = 0;
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371
  unsigned min = 0;
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371
  const char *p;
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35.6M
  for (p = str; *p; p++)
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35.6M
    {
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35.6M
      if (*(const unsigned char *)p < 128)
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35.6M
  /* done */;
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0
      else
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0
  {
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0
    if ((*(const unsigned char *)p & 0xe0) == 0xc0) /* 110xxxxx */
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0
      {
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0
        if ( ((*(const unsigned char *)p & 0x1e) == 0))
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0
    goto error;
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0
        p++;
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0
        if ( ((*(const unsigned char *)p & 0xc0) != 0x80)) /* 10xxxxxx */
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0
    goto error;
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0
      }
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0
    else
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0
      {
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0
        if ((*(const unsigned char *)p & 0xf0) == 0xe0) /* 1110xxxx */
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0
    {
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0
      min = (1 << 11);
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0
      val = *(const unsigned char *)p & 0x0f;
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0
      goto TWO_REMAINING;
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0
    }
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0
        else if ((*(const unsigned char *)p & 0xf8) == 0xf0) /* 11110xxx */
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0
    {
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0
      min = (1 << 16);
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0
      val = *(const unsigned char *)p & 0x07;
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0
    }
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0
        else
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0
    goto error;
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0
        p++;
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0
        CONTINUATION_CHAR;
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0
      TWO_REMAINING:
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0
        p++;
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0
        CONTINUATION_CHAR;
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0
        p++;
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0
        CONTINUATION_CHAR;
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0
        if ( (val < min))
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0
    goto error;
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0
        if ( (!UNICODE_VALID(val)))
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0
    goto error;
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0
      }
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102
0
    continue;
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0
  error:
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0
    return NULL;
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0
  }
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35.6M
    }
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371
  return str;
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371
}