Re: [PATCH 2/2] fast-import: validate entire ident string

From: Jonathan Nieder <jrnieder@gmail.com>
Date: Apr 26, 2010, 16:30 UTC
Message-ID: <20100426163032.GB10859@progeny.tock>
In-Reply-To: <20100426162422.GA10859@progeny.tock>

Jonathan Nieder wrote:

Show 9 quoted lines

> -		lb = strstr(a + 8, " <");
> -		rb = strstr(a + 8, "> ");
> -		eol = strchr(a + 8, '\n');
> +		n = a + strlen("\nauthor");
> +		lb = strstr(n, " <");
> +		rb = strstr(lb + 2, "> ");
> +		eol = strchr(rb + 2, '\n');
>  		if (!lb || !rb || !eol)
>  			die("invalid commit: %s", use_message);

Err, this will segv when it fails; better to use

	lb = a + strlen("\nauthor ");
	lb = strchrnul(lb, '<');
	rb = strchrnul(lb, '>');
	eol = strchrnul(rb, '\n');
	if (!*lb || !*rb || !*eol)
		die("invalid commit: %s", use_message);

This is even more permissive, but I think that’s okay.

Sorry for the noise. Jonathan