Clean up potentially unsafe unwrap() statements.

src/commons/api/admin.rs

@@ -11,7 +11,6 @@ use serde::de;
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 
 use rpki::cert::Cert;
-use rpki::crypto::Signer;
 use rpki::uri;
 use rpki::x509::Time;
 
@@ -53,11 +52,14 @@ impl TryFrom<&PathBuf> for Handle {
     type Error = InvalidHandle;
 
     fn try_from(path: &PathBuf) -> Result<Self, Self::Error> {
-        let path = path.file_name().unwrap();
-        let s = path.to_string_lossy().to_string();
-        let s = s.replace("+", "/");
-        let s = s.replace("=", "\\");
-        Self::from_str(&s)
+        if let Some(path) = path.file_name() {
+            let s = path.to_string_lossy().to_string();
+            let s = s.replace("+", "/");
+            let s = s.replace("=", "\\");
+            Self::from_str(&s)
+        } else {
+            Err(InvalidHandle)
+        }
     }
 }
 
@@ -129,15 +131,6 @@ pub struct InvalidHandle;
 #[derive(Clone, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Token(String);
 
-impl Token {
-    pub fn random<S: Signer>(signer: &S) -> Self {
-        let mut res = <[u8; 20]>::default();
-        signer.rand(&mut res).unwrap();
-        let string = hex::encode(res);
-        Token(string)
-    }
-}
-
 impl From<&str> for Token {
     fn from(s: &str) -> Self {
         Token(s.to_string())

src/commons/eventsourcing/store.rs

@@ -375,10 +375,12 @@ impl KeyStore for DiskKeyStore {
 
         if let Ok(dir) = fs::read_dir(&self.dir) {
             for d in dir {
-                let path = d.unwrap().path();
-                if path.is_dir() {
-                    if let Ok(id) = Handle::try_from(&path) {
-                        res.push(id);
+                if let Ok(d) = d {
+                    let path = d.path();
+                    if path.is_dir() {
+                        if let Ok(id) = Handle::try_from(&path) {
+                            res.push(id);
+                        }
                     }
                 }
             }

src/commons/remote/rfc6492.rs

@@ -55,7 +55,7 @@ pub struct Message {
 /// # Data Access
 ///
 impl Message {
-    pub fn unwrap(self) -> (Sender, Recipient, Content) {
+    pub fn unpack(self) -> (Sender, Recipient, Content) {
         (self.sender, self.recipient, self.content)
     }
 

src/daemon/ca/server.rs

@@ -329,7 +329,7 @@ impl<S: Signer> CaServer<S> {
 
         let content = ca.verify_rfc6492(msg)?;
 
-        let (child, recipient, content) = content.unwrap();
+        let (child, recipient, content) = content.unpack();
 
         let cms_logger = CmsLogger::for_rfc6492_rcvd(self.rfc6492_log_dir.as_ref(), &recipient, &child);