On Sat, Sep 28, 2013 at 4:34 AM, Jeff King <peff@xxxxxxxx> wrote:
> diff --git a/http.c b/http.c
> index 65a0048..8775b5c 100644
> --- a/http.c
> +++ b/http.c
> @@ -921,11 +921,71 @@ static int http_request_reauth(const char *url,
> +static int update_url_from_redirect(struct strbuf *base,
> + const char *asked,
> + const struct strbuf *got)
> +{
> + const char *tail;
> + size_t tail_len;
> +
> + if (!strcmp(asked, got->buf))
> + return 0;
> +
> + if (strncmp(asked, base->buf, base->len))
> + die("BUG: update_url_from_redirect: %s is not a superset of %s",
> + asked, base->buf);
Is there something non-obvious going on here? die(...,base->buf) takes
advantage of the terminating NUL promised by strbuf, but then
strncmp(...,base->buf,base->len) is used rather than the simpler
strcmp(...,base->buf).
> + tail = asked + base->len;
> + tail_len = strlen(tail);
> +
> + if (got->len < tail_len ||
> + strcmp(tail, got->buf + got->len - tail_len))
> + return 0; /* insane redirect scheme */
> +
> + strbuf_reset(base);
> + strbuf_add(base, got->buf, got->len - tail_len);
> + return 1;
> +}
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