Re: [PATCH] http.c: fix parsing of http.sslCertPasswordProtected variable

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On Jul 12, 2013, at 12:05, Jonathan Nieder wrote:
> Junio C Hamano wrote:
>
>> The existing code triggers only when the configuration variable is
>> set to true.  Once the variable is set to true in a more generic
>> configuration file (e.g. ~/.gitconfig), it cannot be overriden to
>> false in the repository specific one (e.g. .git/config).
> [...]
>> --- a/http.c
>> +++ b/http.c
>> @@ -160,8 +160,7 @@ static int http_options(const char *var, const  
>> char *value, void *cb)
>> 	if (!strcmp("http.sslcainfo", var))
>> 		return git_config_string(&ssl_cainfo, var, value);
>> 	if (!strcmp("http.sslcertpasswordprotected", var)) {
>> -		if (git_config_bool(var, value))
>> -			ssl_cert_password_required = 1;
>> +		ssl_cert_password_required = git_config_bool(var, value);
>
> Thanks for catching it.  The documentation doesn't say anything about
> this "can only enable and cannot disable" behavior and the usual
> pattern is to allow later settings to override earlier ones, so this
> change looks good.
>
> Reviewed-by: Jonathan Nieder <jrnieder@xxxxxxxxx>

Looks good to me too.

> FWIW the GIT_SSL_CERT_PASSWORD_PROTECTED envvar has a similar "can
> only enable" behavior, but since it's documented, that's not as big
> of a problem.

Hmmm.  git help config says:

> Can be overridden by the GIT_SSL_CERT_PASSWORD_PROTECTED environment
> variable.

in the http.sslCertPasswordProtected section of the help.  It doesn't
say it can only be overridden to on.  Is there some other documentation
for that somewhere I'm missing about being can-only-enable?

If not, perhaps a change something like the following could be added
to the patch:

diff --git a/http.c b/http.c
index 2d086ae..83fc6b4 100644
--- a/http.c
+++ b/http.c
@@ -404,11 +404,10 @@ void http_init(struct remote *remote, const char *url, int proactive_auth)
 		curl_ftp_no_epsv = 1;
 
 	if (url) {
+		int pwdreq = git_env_bool("GIT_SSL_CERT_PASSWORD_PROTECTED", -1);
 		credential_from_url(&http_auth, url);
-		if (!ssl_cert_password_required &&
-		    getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
-		    !prefixcmp(url, "https://";))
-			ssl_cert_password_required = 1;
+		if (pwdreq != -1 && !prefixcmp(url, "https://";))
+			ssl_cert_password_required = pwdreq;
 	}
 
 #ifndef NO_CURL_EASY_DUPHANDLE
-- 
--
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