Merge branch 'jk/http-redact-fix' into maint

Sensitive data in the HTTP trace were supposed to be redacted, but
we failed to do so in HTTP/2 requests.

* jk/http-redact-fix:
  http: match headers case-insensitively when redacting
diff --git a/http.c b/http.c
index 8119247..fdb6e22 100644
--- a/http.c
+++ b/http.c
@@ -643,8 +643,8 @@
 	const char *sensitive_header;
 
 	if (trace_curl_redact &&
-	    (skip_prefix(header->buf, "Authorization:", &sensitive_header) ||
-	     skip_prefix(header->buf, "Proxy-Authorization:", &sensitive_header))) {
+	    (skip_iprefix(header->buf, "Authorization:", &sensitive_header) ||
+	     skip_iprefix(header->buf, "Proxy-Authorization:", &sensitive_header))) {
 		/* The first token is the type, which is OK to log */
 		while (isspace(*sensitive_header))
 			sensitive_header++;
@@ -654,7 +654,7 @@
 		strbuf_setlen(header,  sensitive_header - header->buf);
 		strbuf_addstr(header, " <redacted>");
 	} else if (trace_curl_redact &&
-		   skip_prefix(header->buf, "Cookie:", &sensitive_header)) {
+		   skip_iprefix(header->buf, "Cookie:", &sensitive_header)) {
 		struct strbuf redacted_header = STRBUF_INIT;
 		const char *cookie;
 
diff --git a/t/t5551-http-fetch-smart.sh b/t/t5551-http-fetch-smart.sh
index 4f87d90..4e54226 100755
--- a/t/t5551-http-fetch-smart.sh
+++ b/t/t5551-http-fetch-smart.sh
@@ -196,8 +196,8 @@
 
 	# Ensure that there is no "Basic" followed by a base64 string, but that
 	# the auth details are redacted
-	! grep "Authorization: Basic [0-9a-zA-Z+/]" trace &&
-	grep "Authorization: Basic <redacted>" trace
+	! grep -i "Authorization: Basic [0-9a-zA-Z+/]" trace &&
+	grep -i "Authorization: Basic <redacted>" trace
 '
 
 test_expect_success 'GIT_CURL_VERBOSE redacts auth details' '
@@ -208,8 +208,8 @@
 
 	# Ensure that there is no "Basic" followed by a base64 string, but that
 	# the auth details are redacted
-	! grep "Authorization: Basic [0-9a-zA-Z+/]" trace &&
-	grep "Authorization: Basic <redacted>" trace
+	! grep -i "Authorization: Basic [0-9a-zA-Z+/]" trace &&
+	grep -i "Authorization: Basic <redacted>" trace
 '
 
 test_expect_success 'GIT_TRACE_CURL does not redact auth details if GIT_TRACE_REDACT=0' '
@@ -219,7 +219,7 @@
 		git clone --bare "$HTTPD_URL/auth/smart/repo.git" redact-auth &&
 	expect_askpass both user@host &&
 
-	grep "Authorization: Basic [0-9a-zA-Z+/]" trace
+	grep -i "Authorization: Basic [0-9a-zA-Z+/]" trace
 '
 
 test_expect_success 'disable dumb http on server' '
@@ -474,10 +474,10 @@
 	GIT_TRACE_CURL=true \
 		git -c "http.cookieFile=$(pwd)/cookies" clone \
 		$HTTPD_URL/smart/repo.git clone 2>err &&
-	grep "Cookie:.*Foo=<redacted>" err &&
-	grep "Cookie:.*Bar=<redacted>" err &&
-	! grep "Cookie:.*Foo=1" err &&
-	! grep "Cookie:.*Bar=2" err
+	grep -i "Cookie:.*Foo=<redacted>" err &&
+	grep -i "Cookie:.*Bar=<redacted>" err &&
+	! grep -i "Cookie:.*Foo=1" err &&
+	! grep -i "Cookie:.*Bar=2" err
 '
 
 test_expect_success 'empty values of cookies are also redacted' '
@@ -486,7 +486,7 @@
 	GIT_TRACE_CURL=true \
 		git -c "http.cookieFile=$(pwd)/cookies" clone \
 		$HTTPD_URL/smart/repo.git clone 2>err &&
-	grep "Cookie:.*Foo=<redacted>" err
+	grep -i "Cookie:.*Foo=<redacted>" err
 '
 
 test_expect_success 'GIT_TRACE_REDACT=0 disables cookie redaction' '
@@ -496,8 +496,8 @@
 	GIT_TRACE_REDACT=0 GIT_TRACE_CURL=true \
 		git -c "http.cookieFile=$(pwd)/cookies" clone \
 		$HTTPD_URL/smart/repo.git clone 2>err &&
-	grep "Cookie:.*Foo=1" err &&
-	grep "Cookie:.*Bar=2" err
+	grep -i "Cookie:.*Foo=1" err &&
+	grep -i "Cookie:.*Bar=2" err
 '
 
 test_expect_success 'GIT_TRACE_CURL_NO_DATA prevents data from being traced' '