[PATCH] http: accept https:// proxies again

["Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>]

From: Johannes Schindelin <johannes.schindelin@gmx.de>

Since 663d7abe07ea (http: reject unsupported proxy URL schemes,
2026-05-05), set_curl_proxy_type() returns 0 only for the "http"
and SOCKS variants via dedicated early returns, and -1 for
everything else. The "https" branch configures the CURL handle for
HTTPS proxying but then falls through to the trailing `return -1`
intended for unknown schemes, so the caller in get_curl_handle()
treats a perfectly valid https:// proxy URL as unsupported and
refuses to use it.

Noticed while looking into a Coverity report against the same
function; the unchecked curl_easy_setopt() return values it flags
are orthogonal to this fix.

Assisted-by: Opus 4.7
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
    http: accept https:// proxies again

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-2161%2Fdscho%2Ffix-bug-in-validate-proxy-url-scheme-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-2161/dscho/fix-bug-in-validate-proxy-url-scheme-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/2161

 http.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/http.c b/http.c
index 8e5a4d8bcf..8c0f831365 100644
--- a/http.c
+++ b/http.c
@@ -802,6 +802,8 @@ static int set_curl_proxy_type(CURL *result, const char *protocol)
 		if (has_proxy_cert_password())
 			curl_easy_setopt(result, CURLOPT_PROXY_KEYPASSWD,
 					 proxy_cert_auth.password);
+
+		return 0;
 	}
 
 	return -1;

base-commit: 663d7abe07ea376c2657019a03297ae87037c993
-- 
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