P0: AWS Signature V4 implementation complete

- Full Canonical Request with signed headers
- Proper URI encoding (encode_slash option)
- X-Amz-Date timestamp support
- SignedHeaders extraction from Authorization header
- Payload hash from X-Amz-Content-Sha256
- 4 unit tests passing

Tests: 297 passed (293 + 4 new)

markbase-core/src/config/mod.rs

@@ -29,6 +29,7 @@ pub struct WebSection {
     pub log_level: String,
     pub auth_db_path: String,
     pub users_db_dir: String,
+    pub webdav_root: String,
 }
 
 impl Default for WebSection {
@@ -39,6 +40,7 @@ impl Default for WebSection {
             log_level: "info".to_string(),
             auth_db_path: "data/auth.sqlite".to_string(),
             users_db_dir: "data/users".to_string(),
+            webdav_root: "/Users/accusys/momentry/var/sftpgo/data/demo".to_string(),
         }
     }
 }

markbase-core/src/config/web.rs

@@ -18,6 +18,7 @@ pub struct ServerConfig {
     pub log_level: String,
     pub auth_db_path: String,
     pub users_db_dir: String,
+    pub webdav_root: String,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -87,6 +88,7 @@ impl MarkBaseConfig {
                 log_level: "info".to_string(),
                 auth_db_path: "data/auth.sqlite".to_string(),
                 users_db_dir: "data/users".to_string(),
+                webdav_root: "/Users/accusys/momentry/var/sftpgo/data/demo".to_string(),
             },
             postgresql: PostgreSQLConfig {
                 host: "127.0.0.1".to_string(),
@@ -138,6 +140,9 @@ impl MarkBaseConfig {
         if let Ok(log_level) = std::env::var("MB_LOG_LEVEL") {
             self.server.log_level = log_level;
         }
+        if let Ok(webdav_root) = std::env::var("MB_WEBDAV_ROOT") {
+            self.server.webdav_root = webdav_root;
+        }
 
         if let Ok(pg_host) = std::env::var("PG_HOST") {
             self.postgresql.host = pg_host;
@@ -176,6 +181,7 @@ impl MarkBaseConfig {
             "server.log_level" => Some(self.server.log_level.clone()),
             "server.auth_db_path" => Some(self.server.auth_db_path.clone()),
             "server.users_db_dir" => Some(self.server.users_db_dir.clone()),
+            "server.webdav_root" => Some(self.server.webdav_root.clone()),
 
             "postgresql.host" => Some(self.postgresql.host.clone()),
             "postgresql.port" => Some(self.postgresql.port.to_string()),
@@ -221,6 +227,7 @@ impl MarkBaseConfig {
             "server.log_level" => self.server.log_level = value.to_string(),
             "server.auth_db_path" => self.server.auth_db_path = value.to_string(),
             "server.users_db_dir" => self.server.users_db_dir = value.to_string(),
+            "server.webdav_root" => self.server.webdav_root = value.to_string(),
 
             "postgresql.host" => self.postgresql.host = value.to_string(),
             "postgresql.port" => self.postgresql.port = value.parse()?,