ensure to load buildconfig from selected git sha

webinstall/cibuild.js

@@ -226,7 +226,10 @@ import fileDownload from "https://cdn.skypack.dev/js-file-download@0.4.12"
         downloadConfig: downloadConfig
     };
     const loadConfig=async (url)=>{
-        let config=await fetch(url).then((r)=>r.text());
+        let config=await fetch(url).then((r)=>{
+            if (!r.ok) throw new Error("unable to fetch: "+r.statusText);
+            return r.text()
+        });
         let parsed=yamlLoad(config);
         return parsed;
     }
@@ -423,9 +426,6 @@ import fileDownload from "https://cdn.skypack.dev/js-file-download@0.4.12"
             fetchStatus(true);
             setRunning(true);
         }
-        structure=await loadConfig("build.yaml");
-        buildSelectors(ROOT_PATH,structure.config.children,true);
-        if (! running) findPipeline();
         let gitParam={user:GITUSER,repo:GITREPO};
         let branch=getParam('branch');
         if (branch){
@@ -479,6 +479,19 @@ import fileDownload from "https://cdn.skypack.dev/js-file-download@0.4.12"
         else{
             setValue('gitSha',gitSha);
         }
+        if (gitSha !== undefined){
+            let url=buildUrl(GITAPI,Object.assign({},gitParam,{sha:gitSha,proxy:'webinstall/build.yaml'}));
+            try{
+                structure=await loadConfig(url);
+            }catch (e){
+                alert("unable to load config for selected release:\n "+e+"\n falling back to default");
+            }
+        }
+        if (! structure){
+            structure=await loadConfig("build.yaml");
+        }
+        buildSelectors(ROOT_PATH,structure.config.children,true);
+        if (! running) findPipeline();
         updateStart();
     }
 })();

webinstall/config.php

@@ -15,12 +15,12 @@ function fillUserAndRepo($vars=null,$source=null){
     }
     foreach (array('user','repo') as $n){
         if (! isset($source[$n])){
-            die("missing parameter $n");
+            throw new Exception("missing parameter $n");
         }
         $v=$source[$n];
         $av=$allowed[$n];
         if (! in_array($v,$av)){
-            die("value $v for $n not allowed");
+            throw new Exception("value $v for $n not allowed");
         }
         $vars[$n]=$v;
     }

webinstall/functions.php

@@ -39,7 +39,7 @@ function addVars(&$vars,$names,$defaults=null){
     foreach ($names as $n){
         $v=null;
         if (! isset($_REQUEST[$n])){
-            if ($defaults == null || ! isset($defaults[$n])) die("missing parameter $n");
+            if ($defaults == null || ! isset($defaults[$n])) throw new Exception("missing parameter $n");
             $v=$defaults[$n];
         }
         else{

webinstall/install.php

@@ -7,6 +7,7 @@ $branchsha=API_BASE."/git/refs/heads/#branch#";
 $tagsha=API_BASE."/git/refs/tags/#tag#";
 $download = "https://github.com/#user#/#repo#/releases/download/#dlVersion#/#dlName#";
 $manifest = "?dlName=#mName#&dlVersion=#mVersion#&user=#user#&repo=#repo#";
+$proxurl="https://raw.githubusercontent.com/#user#/#repo#/#sha#/#proxy#";
 try {
 	if (isset($_REQUEST['api'])) {
 		$vars = fillUserAndRepo();
@@ -50,11 +51,17 @@ try {
 			}
 		}
 		if (!$targetUrl)
-			die("unable to find $targetBase $mode\n");
+			throw new Exception("unable to find $targetBase $mode\n");
 		#echo("download for $targetBase=$targetUrl\n");
 		proxy($targetUrl);
 		exit(0);
 	}
+	if (isset($_REQUEST['proxy'])){
+		$vars = fillUserAndRepo();
+		$vars = addVars($vars, array('sha', 'proxy'));
+		proxy(replaceVars($proxurl, $vars));
+		exit(0);
+	}
 } catch (HTTPErrorException $h) {
 	header($_SERVER['SERVER_PROTOCOL'] . " " . $h->code . " " . $h->getMessage());
 	die($h->getMessage());