fix(server): allow disabling content-type check (argoproj#16959)

* fix(server): allow disabling content-type check

Signed-off-by: Michael Crenshaw <350466+crenshaw-dev@users.noreply.github.com>

* fix spacing

Signed-off-by: Michael Crenshaw <350466+crenshaw-dev@users.noreply.github.com>

---------

Signed-off-by: Michael Crenshaw <350466+crenshaw-dev@users.noreply.github.com>
Signed-off-by: Kevin Lyda <kevin@lyda.ie>

cmd/argocd-server/commands/argocd_server.go

@@ -172,6 +172,11 @@ func NewCommand() *cobra.Command {
 				baseHRef = rootPath
 			}
 
+			var contentTypesList []string
+			if contentTypes != "" {
+				contentTypesList = strings.Split(contentTypes, ";")
+			}
+
 			argoCDOpts := server.ArgoCDServerOpts{
 				Insecure:              insecure,
 				ListenPort:            listenPort,
@@ -187,7 +192,7 @@ func NewCommand() *cobra.Command {
 				DexServerAddr:         dexServerAddress,
 				DexTLSConfig:          dexTlsConfig,
 				DisableAuth:           disableAuth,
-				ContentTypes:          strings.Split(contentTypes, ";"),
+				ContentTypes:          contentTypesList,
 				EnableGZip:            enableGZip,
 				TLSConfigCustomizer:   tlsConfigCustomizer,
 				Cache:                 cache,
@@ -243,7 +248,7 @@ func NewCommand() *cobra.Command {
 	command.Flags().StringVar(&repoServerAddress, "repo-server", env.StringFromEnv("ARGOCD_SERVER_REPO_SERVER", common.DefaultRepoServerAddr), "Repo server address")
 	command.Flags().StringVar(&dexServerAddress, "dex-server", env.StringFromEnv("ARGOCD_SERVER_DEX_SERVER", common.DefaultDexServerAddr), "Dex server address")
 	command.Flags().BoolVar(&disableAuth, "disable-auth", env.ParseBoolFromEnv("ARGOCD_SERVER_DISABLE_AUTH", false), "Disable client authentication")
-	command.Flags().StringVar(&contentTypes, "api-content-types", "application/json", "Semicolon separated list of allowed content types for non GET api requests. Any content type is allowed if empty.")
+	command.Flags().StringVar(&contentTypes, "api-content-types", env.StringFromEnv("ARGOCD_API_CONTENT_TYPES", "application/json"), "Semicolon separated list of allowed content types for non GET api requests. Any content type is allowed if empty.")
 	command.Flags().BoolVar(&enableGZip, "enable-gzip", env.ParseBoolFromEnv("ARGOCD_SERVER_ENABLE_GZIP", true), "Enable GZIP compression")
 	command.AddCommand(cli.NewVersionCmd(cliName))
 	command.Flags().StringVar(&listenHost, "address", env.StringFromEnv("ARGOCD_SERVER_LISTEN_ADDRESS", common.DefaultAddressAPIServer), "Listen on given address")

docs/operator-manual/argocd-cmd-params-cm.yaml

@@ -90,6 +90,9 @@ data:
   server.k8sclient.retry.max: "0"
   # The initial backoff delay on the first retry attempt in ms. Subsequent retries will double this backoff time up to a maximum threshold
   server.k8sclient.retry.base.backoff: "100"
+  # Semicolon-separated list of content types allowed on non-GET requests. Set an empty string to allow all. Be aware
+  # that allowing content types besides application/json may make your API more vulnerable to CSRF attacks.
+  server.api.content.types: "application/json"
 
   # Set the logging format. One of: text|json (default "text")
   server.log.format: "text"