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(split_3): Accept only old format.

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Properly handle file names with leading and trailing white space.
This commit is contained in:
Jim Meyering
1995-07-20 21:09:57 +00:00
parent 1ae54a6140
commit d58bdcd4fa
1 changed files with 12 additions and 34 deletions
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46
src/md5sum.c
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@@ -146,45 +146,23 @@ split_3 (s, u, binary, w)
/* The first field has to be the 32-character hexadecimal
representation of the message digest. If it not immediately
followed by a white space it's an error. */
if (!ISWHITE (s[i + 32]))
i += 32;
if (!ISWHITE (s[i]))
return 1;
i += 32;
s[i++] = '\0';
/* Now we have to look for two possibilities: the line is in the
new format in which case we have the character 'b' or 't' followed
by a white space or we have a ' ' or '*' immediately followed by
the file name. */
if (ISWHITE (s[i + 1]))
{
if (s[i] != 'b' && s[i] != 't')
return 1;
*binary = s[i] == 'b';
i += 2;
}
else
{
if (s[i] != ' ' && s[i] != '*')
return 1;
*binary = s[i] == '*';
++i;
}
if (s[i] != ' ' && s[i] != '*')
return 1;
*binary = s[i++] == '*';
if (s[i])
{
*w = &s[i];
/* Skip past the third token. */
while (s[i] && !ISWHITE (s[i]))
++i;
if (s[i])
s[i++] = '\0';
/* Allow trailing white space. */
while (ISWHITE (s[i]))
++i;
if (!s[i])
return 0;
}
/* When using the old format, all characters between the type
indicator and end of line are significant -- that includes
leading and trailing white space. */
*w = &s[i];
/* So this line is valid as long as there is at least one character
for the filename. */
return (**w ? 0 : 1);
}
return 1;
}