Re: [PATCH] http: honor no_http env variable to bypass proxy

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2016-03-07 21:33 GMT+01:00 Junio C Hamano <gitster@xxxxxxxxx>:
> Junio C Hamano <gitster@xxxxxxxxx> writes:
>
> Second call for help.  I hate having to revert 30f302f7 (Merge
> branch 'kf/http-proxy-auth-methods', 2016-02-03) this late in the
> cycle.
Ok. I made the original merge commit for master. So,  if it is
sufficient, for me the patch is correct.

I am sorry for the delay in the response.

Best
>
>> Jiang Xin <worldhello.net@xxxxxxxxx> writes:
>>
>>> From: Jiang Xin <xin.jiang@xxxxxxxxxx>
>>>
>>> Curl and its families honor several proxy related environment variables:
>>>
>>> * http_proxy and https_proxy define proxy for http/https connections.
>>> * no_proxy (a comma separated hosts) defines hosts bypass the proxy.
>>>
>>> This command will bypass the bad-proxy and connect to the host directly:
>>>
>>>     no_proxy=* https_proxy=http://bad-proxy/ \
>>>     curl -sk https://google.com/
>>>
>>> Before commit 372370f (http: use credential API to handle proxy auth...),
>>> Environment variable "no_proxy" will take effect if the config variable
>>> "http.proxy" is not set.  So the following comamnd won't fail if not
>>> behind a firewall.
>>>
>>>     no_proxy=* https_proxy=http://bad-proxy/ \
>>>     git ls-remote https://github.com/git/git
>>>
>>> But commit 372370f not only read git config variable "http.proxy", but
>>> also read "http_proxy" and "https_proxy" environment variables, and set
>>> the curl option using:
>>>
>>>     curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
>>>
>>> This caused "no_proxy" environment variable not working any more.
>>>
>>> Set extra curl option "CURLOPT_NOPROXY" will fix this issue.
>>>
>>> Signed-off-by: Jiang Xin <xin.jiang@xxxxxxxxxx>
>>> ---
>>>  http.c | 6 ++++++
>>>  1 file changed, 6 insertions(+)
>>
>> Sounds sensible; I am guessing that this is 2.8.0-rc0 regression
>> that we need to fast-track?
>>
>> Knut, does this look good?
>>
>> Thanks.
>>
>>> diff --git a/http.c b/http.c
>>> index 1d5e3bb..69da445 100644
>>> --- a/http.c
>>> +++ b/http.c
>>> @@ -70,6 +70,7 @@ static long curl_low_speed_limit = -1;
>>>  static long curl_low_speed_time = -1;
>>>  static int curl_ftp_no_epsv;
>>>  static const char *curl_http_proxy;
>>> +static const char *curl_no_proxy;
>>>  static const char *http_proxy_authmethod;
>>>  static struct {
>>>      const char *name;
>>> @@ -624,6 +625,11 @@ static CURL *get_curl_handle(void)
>>>              }
>>>
>>>              curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
>>> +#if LIBCURL_VERSION_NUM >= 0x071304
>>> +            var_override(&curl_no_proxy, getenv("NO_PROXY"));
>>> +            var_override(&curl_no_proxy, getenv("no_proxy"));
>>> +            curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
>>> +#endif
>>>      }
>>>      init_curl_proxy_auth(result);
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