Feat/marketplace show links (#2105)

* closes #2084, rearranges marketplace show, app show, and donation link for Start9

* use url query param if present when fetching license and instructions

* remove log

* chore: Add some checking

* chore: Update something about validation

* chore: Update to use correct default

Co-authored-by: BluJ <mogulslayer@gmail.com>

backend/src/s9pk/manifest.rs

@@ -76,6 +76,9 @@ pub struct Manifest {
     pub dependencies: Dependencies,
     #[model]
     pub containers: Option<DockerContainers>,
+
+    #[serde(default)]
+    pub replaces: Vec<String>,
 }
 
 impl Manifest {

backend/src/s9pk/reader.rs

@@ -24,6 +24,9 @@ use crate::s9pk::docker::DockerReader;
 use crate::util::Version;
 use crate::{Error, ResultExt};
 
+const MAX_REPLACES: usize = 10;
+const MAX_TITLE_LEN: usize = 30;
+
 #[pin_project::pin_project]
 #[derive(Debug)]
 pub struct ReadHandle<'a, R = File> {
@@ -231,6 +234,35 @@ impl<R: AsyncRead + AsyncSeek + Unpin + Send + Sync> S9pkReader<R> {
             &validated_image_ids,
         )?;
 
+        #[cfg(feature = "js_engine")]
+        if man.containers.is_some()
+            || matches!(man.main, crate::procedure::PackageProcedure::Script(_))
+        {
+            return Err(Error::new(
+                eyre!("Right now we don't support the containers and the long running main"),
+                crate::ErrorKind::ValidateS9pk,
+            ));
+        }
+
+        if man.replaces.len() >= MAX_REPLACES {
+            return Err(Error::new(
+                eyre!("Cannot have more than {MAX_REPLACES} replaces"),
+                crate::ErrorKind::ValidateS9pk,
+            ));
+        }
+        if let Some(too_big) = man.replaces.iter().find(|x| x.len() >= MAX_REPLACES) {
+            return Err(Error::new(
+                eyre!("We have found a replaces of ({too_big}) that exceeds the max length of {MAX_TITLE_LEN} "),
+                crate::ErrorKind::ValidateS9pk,
+            ));
+        }
+        if man.title.len() >= MAX_TITLE_LEN {
+            return Err(Error::new(
+                eyre!("Cannot have more than a length of {MAX_TITLE_LEN} for title"),
+                crate::ErrorKind::ValidateS9pk,
+            ));
+        }
+
         if man.containers.is_some()
             && matches!(man.main, crate::procedure::PackageProcedure::Docker(_))
         {