20240725 allow connection to older servers (#2930)

Co-authored-by: James Hodgkinson <james@terminaloutcomes.com>

libs/client/src/lib.rs

@@ -22,6 +22,7 @@ use std::io::{ErrorKind, Read};
 #[cfg(target_family = "unix")] // not needed for windows builds
 use std::os::unix::fs::MetadataExt;
 use std::path::Path;
+use std::sync::Arc;
 use std::time::Duration;
 
 use compact_jwt::Jwk;
@@ -30,10 +31,11 @@ use kanidm_proto::constants::uri::V1_AUTH_VALID;
 use kanidm_proto::constants::{
     ATTR_DOMAIN_DISPLAY_NAME, ATTR_DOMAIN_LDAP_BASEDN, ATTR_DOMAIN_SSID, ATTR_ENTRY_MANAGED_BY,
     ATTR_KEY_ACTION_REVOKE, ATTR_LDAP_ALLOW_UNIX_PW_BIND, ATTR_NAME, CLIENT_TOKEN_CACHE, KOPID,
-    KVERSION,
+    KSESSIONID, KVERSION,
 };
 use kanidm_proto::internal::*;
 use kanidm_proto::v1::*;
+use reqwest::cookie::{CookieStore, Jar};
 use reqwest::Response;
 pub use reqwest::StatusCode;
 use serde::de::DeserializeOwned;
@@ -192,10 +194,12 @@ fn test_kanidmclientbuilder_display() {
 #[derive(Debug)]
 pub struct KanidmClient {
     pub(crate) client: reqwest::Client,
+    client_cookies: Arc<Jar>,
     pub(crate) addr: String,
     pub(crate) origin: Url,
     pub(crate) builder: KanidmClientBuilder,
     pub(crate) bearer_token: RwLock<Option<String>>,
+    pub(crate) auth_session_id: RwLock<Option<String>>,
     pub(crate) check_version: Mutex<bool>,
     /// Where to store the tokens when you auth, only modify in testing.
     token_cache_path: String,
@@ -501,11 +505,14 @@ impl KanidmClientBuilder {
 
         self.display_warnings(&address);
 
+        let client_cookies = Arc::new(Jar::default());
+
         let client_builder = reqwest::Client::builder()
             .user_agent(KanidmClientBuilder::user_agent())
             // We don't directly use cookies, but it may be required for load balancers that
             // implement sticky sessions with cookies.
             .cookie_store(true)
+            .cookie_provider(client_cookies.clone())
             .danger_accept_invalid_hostnames(!self.verify_hostnames)
             .danger_accept_invalid_certs(!self.verify_ca);
 
@@ -546,9 +553,11 @@ impl KanidmClientBuilder {
 
         Ok(KanidmClient {
             client,
+            client_cookies,
             addr: address,
             builder: self,
             bearer_token: RwLock::new(None),
+            auth_session_id: RwLock::new(None),
             origin,
             check_version: Mutex::new(true),
             token_cache_path,
@@ -765,7 +774,9 @@ impl KanidmClient {
     ) -> Result<T, ClientError> {
         trace!("perform_auth_post_request connecting to {}", dest);
 
-        let response = self.client.post(self.make_url(dest)).json(&request);
+        let auth_url = self.make_url(dest);
+
+        let response = self.client.post(auth_url.clone()).json(&request);
 
         // If we have a bearer token, set it now.
         let response = {
@@ -777,6 +788,17 @@ impl KanidmClient {
             }
         };
 
+        // If we have a session header, set it now. This is only used when connecting
+        // to an older server.
+        let response = {
+            let sguard = self.auth_session_id.read().await;
+            if let Some(sessionid) = &(*sguard) {
+                response.header(KSESSIONID, sessionid)
+            } else {
+                response
+            }
+        };
+
         let response = response
             .send()
             .await
@@ -798,6 +820,42 @@ impl KanidmClient {
             }
         }
 
+        // Do we have a cookie? Our job here isn't to parse and validate the cookies, but just to
+        // know if the session id was set *in* our cookie store at all.
+        let cookie_present = self
+            .client_cookies
+            .cookies(&auth_url)
+            .map(|cookie_header| {
+                cookie_header
+                    .to_str()
+                    .ok()
+                    .map(|cookie_str| {
+                        cookie_str
+                            .split(';')
+                            .filter_map(|c| c.split_once('='))
+                            .any(|(name, _)| name == COOKIE_AUTH_SESSION_ID)
+                    })
+                    .unwrap_or_default()
+            })
+            .unwrap_or_default();
+
+        {
+            let headers = response.headers();
+
+            let mut sguard = self.auth_session_id.write().await;
+            trace!(?cookie_present);
+            if cookie_present {
+                // Clear and auth session id if present, we have the cookie instead.
+                *sguard = None;
+            } else {
+                // This situation occurs when a newer client connects to an older server
+                debug!("Auth SessionID cookie not present, falling back to header.");
+                *sguard = headers
+                    .get(KSESSIONID)
+                    .and_then(|hv| hv.to_str().ok().map(str::to_string));
+            }
+        }
+
         response
             .json()
             .await

unix_integration/resolver/src/bin/kanidm_unixd.rs

@@ -36,6 +36,7 @@ use kanidm_unix_resolver::unix_config::{HsmType, KanidmUnixdConfig};
 
 use kanidm_utils_users::{get_current_gid, get_current_uid, get_effective_gid, get_effective_uid};
 use libc::umask;
+use sketching::tracing::span;
 use sketching::tracing_forest::traits::*;
 use sketching::tracing_forest::util::*;
 use sketching::tracing_forest::{self};
@@ -211,6 +212,9 @@ async fn handle_client(
 
     trace!("Waiting for requests ...");
     while let Some(Ok(req)) = reqs.next().await {
+        let span = span!(Level::INFO, "client_request");
+        let _enter = span.enter();
+
         let resp = match req {
             ClientRequest::SshKey(account_id) => {
                 debug!("sshkey req");

unix_integration/resolver/src/bin/kanidm_unixd_tasks.rs

@@ -150,7 +150,7 @@ fn create_home_directory(
     debug!(?use_selinux, "selinux for home dir labeling");
     #[cfg(all(target_family = "unix", feature = "selinux"))]
     let labeler = if use_selinux {
-        selinux_util::SelinuxLabeler::new(info.gid, home_prefix)?
+        selinux_util::SelinuxLabeler::new(info.gid, &home_mount_prefix_path)?
     } else {
         selinux_util::SelinuxLabeler::new_noop()
     };

unix_integration/resolver/src/db.rs

@@ -310,7 +310,7 @@ impl<'a> DbTxn<'a> {
         key: &K,
     ) -> Result<(), CacheError> {
         let data = serde_json::to_vec(key).map_err(|e| {
-            error!("insert_hsm_machine_key json error -> {:?}", e);
+            error!("json error -> {:?}", e);
             CacheError::SerdeJson
         })?;
 
@@ -451,7 +451,6 @@ impl<'a> DbTxn<'a> {
     }
 
     pub fn commit(mut self) -> Result<(), CacheError> {
-        // debug!("Committing BE txn");
         if self.committed {
             error!("Invalid state, SQL transaction was already committed!");
             return Err(CacheError::TransactionInvalidState);
@@ -1016,7 +1015,7 @@ impl<'a> Drop for DbTxn<'a> {
 mod tests {
 
     use super::{Cache, Db};
-    use crate::idprovider::interface::{GroupToken, Id, UserToken};
+    use crate::idprovider::interface::{GroupToken, Id, ProviderOrigin, UserToken};
     use kanidm_hsm_crypto::{AuthValue, Tpm};
 
     const TESTACCOUNT1_PASSWORD_A: &str = "password a for account1 test";
@@ -1042,6 +1041,7 @@ mod tests {
         assert!(dbtxn.migrate().is_ok());
 
         let mut ut1 = UserToken {
+            provider: ProviderOrigin::Files,
             name: "testuser".to_string(),
             spn: "testuser@example.com".to_string(),
             displayname: "Test User".to_string(),
@@ -1126,6 +1126,7 @@ mod tests {
         assert!(dbtxn.migrate().is_ok());
 
         let mut gt1 = GroupToken {
+            provider: ProviderOrigin::Files,
             name: "testgroup".to_string(),
             spn: "testgroup@example.com".to_string(),
             gidnumber: 2000,
@@ -1201,6 +1202,7 @@ mod tests {
         assert!(dbtxn.migrate().is_ok());
 
         let gt1 = GroupToken {
+            provider: ProviderOrigin::Files,
             name: "testuser".to_string(),
             spn: "testuser@example.com".to_string(),
             gidnumber: 2000,
@@ -1208,6 +1210,7 @@ mod tests {
         };
 
         let gt2 = GroupToken {
+            provider: ProviderOrigin::Files,
             name: "testgroup".to_string(),
             spn: "testgroup@example.com".to_string(),
             gidnumber: 2001,
@@ -1215,6 +1218,7 @@ mod tests {
         };
 
         let mut ut1 = UserToken {
+            provider: ProviderOrigin::Files,
             name: "testuser".to_string(),
             spn: "testuser@example.com".to_string(),
             displayname: "Test User".to_string(),
@@ -1284,6 +1288,7 @@ mod tests {
 
         let uuid1 = uuid::uuid!("0302b99c-f0f6-41ab-9492-852692b0fd16");
         let mut ut1 = UserToken {
+            provider: ProviderOrigin::Files,
             name: "testuser".to_string(),
             spn: "testuser@example.com".to_string(),
             displayname: "Test User".to_string(),
@@ -1353,6 +1358,7 @@ mod tests {
         assert!(dbtxn.migrate().is_ok());
 
         let mut gt1 = GroupToken {
+            provider: ProviderOrigin::Files,
             name: "testgroup".to_string(),
             spn: "testgroup@example.com".to_string(),
             gidnumber: 2000,
@@ -1360,6 +1366,7 @@ mod tests {
         };
 
         let gt2 = GroupToken {
+            provider: ProviderOrigin::Files,
             name: "testgroup".to_string(),
             spn: "testgroup@example.com".to_string(),
             gidnumber: 2001,
@@ -1408,6 +1415,7 @@ mod tests {
         assert!(dbtxn.migrate().is_ok());
 
         let mut ut1 = UserToken {
+            provider: ProviderOrigin::Files,
             name: "testuser".to_string(),
             spn: "testuser@example.com".to_string(),
             displayname: "Test User".to_string(),
@@ -1420,6 +1428,7 @@ mod tests {
         };
 
         let ut2 = UserToken {
+            provider: ProviderOrigin::Files,
             name: "testuser".to_string(),
             spn: "testuser@example.com".to_string(),
             displayname: "Test User".to_string(),

unix_integration/resolver/src/idprovider/interface.rs

@@ -39,8 +39,20 @@ pub enum Id {
     Gid(u32),
 }
 
+#[derive(Debug, Serialize, Deserialize, Clone, Default)]
+pub enum ProviderOrigin {
+    // To allow transition, we have an ignored type that effectively
+    // causes these items to be nixed.
+    #[default]
+    Ignore,
+    Files,
+    Kanidm,
+}
+
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct GroupToken {
+    #[serde(default)]
+    pub provider: ProviderOrigin,
     pub name: String,
     pub spn: String,
     pub uuid: Uuid,
@@ -49,6 +61,8 @@ pub struct GroupToken {
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct UserToken {
+    #[serde(default)]
+    pub provider: ProviderOrigin,
     pub name: String,
     pub spn: String,
     pub uuid: Uuid,

unix_integration/resolver/src/idprovider/kanidm.rs

@@ -17,6 +17,7 @@ use super::interface::{
     Id,
     IdProvider,
     IdpError,
+    ProviderOrigin,
     UserToken,
 };
 use kanidm_unix_common::unix_proto::PamAuthRequest;
@@ -52,6 +53,7 @@ impl From<UnixUserToken> for UserToken {
         let groups = groups.into_iter().map(GroupToken::from).collect();
 
         UserToken {
+            provider: ProviderOrigin::Kanidm,
             name,
             spn,
             uuid,
@@ -75,6 +77,7 @@ impl From<UnixGroupToken> for GroupToken {
         } = value;
 
         GroupToken {
+            provider: ProviderOrigin::Kanidm,
             name,
             spn,
             uuid,

unix_integration/resolver/src/resolver.rs

@@ -68,6 +68,7 @@ pub struct Resolver {
     hmac_key: HmacKey,
 
     // A local passwd/shadow resolver.
+    nxset: Mutex<HashSet<Id>>,
 
     // A set of remote resolvers
     client: Box<dyn IdProvider + Sync + Send>,
@@ -83,7 +84,6 @@ pub struct Resolver {
     uid_attr_map: UidAttr,
     gid_attr_map: UidAttr,
     allow_id_overrides: HashSet<Id>,
-    nxset: Mutex<HashSet<Id>>,
     nxcache: Mutex<LruCache<Id, SystemTime>>,
 }
 
@@ -209,6 +209,7 @@ impl Resolver {
         self.set_cachestate(CacheState::Offline).await;
     }
 
+    #[instrument(level = "debug", skip_all)]
     pub async fn clear_cache(&self) -> Result<(), ()> {
         let mut nxcache_txn = self.nxcache.lock().await;
         nxcache_txn.clear();
@@ -216,6 +217,7 @@ impl Resolver {
         dbtxn.clear().and_then(|_| dbtxn.commit()).map_err(|_| ())
     }
 
+    #[instrument(level = "debug", skip_all)]
     pub async fn invalidate(&self) -> Result<(), ()> {
         let mut nxcache_txn = self.nxcache.lock().await;
         nxcache_txn.clear();
@@ -596,8 +598,8 @@ impl Resolver {
         }
     }
 
+    #[instrument(level = "debug", skip(self))]
     async fn get_usertoken(&self, account_id: Id) -> Result<Option<UserToken>, ()> {
-        debug!("get_usertoken");
         // get the item from the cache
         let (expired, item) = self.get_cached_usertoken(&account_id).await.map_err(|e| {
             debug!("get_usertoken error -> {:?}", e);
@@ -648,8 +650,8 @@ impl Resolver {
         })
     }
 
+    #[instrument(level = "debug", skip(self))]
     async fn get_grouptoken(&self, grp_id: Id) -> Result<Option<GroupToken>, ()> {
-        debug!("get_grouptoken");
         let (expired, item) = self.get_cached_grouptoken(&grp_id).await.map_err(|e| {
             debug!("get_grouptoken error -> {:?}", e);
         })?;
@@ -707,6 +709,7 @@ impl Resolver {
     }
 
     // Get ssh keys for an account id
+    #[instrument(level = "debug", skip(self))]
     pub async fn get_sshkeys(&self, account_id: &str) -> Result<Vec<String>, ()> {
         let token = self.get_usertoken(Id::Name(account_id.to_string())).await?;
         Ok(token
@@ -763,6 +766,7 @@ impl Resolver {
         .to_string()
     }
 
+    #[instrument(level = "debug", skip_all)]
     pub async fn get_nssaccounts(&self) -> Result<Vec<NssUser>, ()> {
         self.get_cached_usertokens().await.map(|l| {
             l.into_iter()
@@ -788,10 +792,12 @@ impl Resolver {
         }))
     }
 
+    #[instrument(level = "debug", skip(self))]
     pub async fn get_nssaccount_name(&self, account_id: &str) -> Result<Option<NssUser>, ()> {
         self.get_nssaccount(Id::Name(account_id.to_string())).await
     }
 
+    #[instrument(level = "debug", skip(self))]
     pub async fn get_nssaccount_gid(&self, gid: u32) -> Result<Option<NssUser>, ()> {
         self.get_nssaccount(Id::Gid(gid)).await
     }
@@ -805,6 +811,7 @@ impl Resolver {
         .to_string()
     }
 
+    #[instrument(level = "debug", skip_all)]
     pub async fn get_nssgroups(&self) -> Result<Vec<NssGroup>, ()> {
         let l = self.get_cached_grouptokens().await?;
         let mut r: Vec<_> = Vec::with_capacity(l.len());
@@ -835,14 +842,17 @@ impl Resolver {
         }
     }
 
+    #[instrument(level = "debug", skip(self))]
     pub async fn get_nssgroup_name(&self, grp_id: &str) -> Result<Option<NssGroup>, ()> {
         self.get_nssgroup(Id::Name(grp_id.to_string())).await
     }
 
+    #[instrument(level = "debug", skip(self))]
     pub async fn get_nssgroup_gid(&self, gid: u32) -> Result<Option<NssGroup>, ()> {
         self.get_nssgroup(Id::Gid(gid)).await
     }
 
+    #[instrument(level = "debug", skip(self))]
     pub async fn pam_account_allowed(&self, account_id: &str) -> Result<Option<bool>, ()> {
         let token = self.get_usertoken(Id::Name(account_id.to_string())).await?;
 
@@ -871,6 +881,7 @@ impl Resolver {
         }
     }
 
+    #[instrument(level = "debug", skip(self, shutdown_rx))]
     pub async fn pam_account_authenticate_init(
         &self,
         account_id: &str,
@@ -945,6 +956,7 @@ impl Resolver {
         }
     }
 
+    #[instrument(level = "debug", skip_all)]
     pub async fn pam_account_authenticate_step(
         &self,
         auth_session: &mut AuthSession,
@@ -1142,6 +1154,7 @@ impl Resolver {
     }
 
     // Can this be cfg debug/test?
+    #[instrument(level = "debug", skip(self, password))]
     pub async fn pam_account_authenticate(
         &self,
         account_id: &str,
@@ -1209,6 +1222,7 @@ impl Resolver {
         }
     }
 
+    #[instrument(level = "debug", skip(self))]
     pub async fn pam_account_beginsession(
         &self,
         account_id: &str,
@@ -1224,6 +1238,7 @@ impl Resolver {
         }))
     }
 
+    #[instrument(level = "debug", skip_all)]
     pub async fn test_connection(&self) -> bool {
         let state = self.get_cachestate().await;
         match state {

unix_integration/resolver/src/selinux_util.rs

@@ -1,6 +1,6 @@
 use kanidm_utils_users::get_user_name_by_uid;
-use std::ffi::CString;
-use std::path::Path;
+use std::ffi::{CString, OsStr};
+use std::path::{Path, PathBuf};
 use std::process::Command;
 
 use selinux::{
@@ -20,14 +20,13 @@ pub fn supported() -> bool {
     }
 }
 
-fn do_setfscreatecon_for_path(path_raw: &str, labeler: &Labeler<File>) -> Result<(), String> {
-    match labeler.look_up(&CString::new(path_raw.to_owned()).unwrap(), 0) {
-        Ok(context) => {
-            if context.set_for_new_file_system_objects(true).is_err() {
-                return Err("Failed setting creation context home directory path".to_string());
-            }
-            Ok(())
-        }
+fn do_setfscreatecon_for_path(path_raw: &Path, labeler: &Labeler<File>) -> Result<(), String> {
+    let path_c_string = CString::new(path_raw.as_os_str().as_encoded_bytes())
+        .map_err(|_| "Invalid Path String".to_string())?;
+    match labeler.look_up(&path_c_string, 0) {
+        Ok(context) => context
+            .set_for_new_file_system_objects(true)
+            .map_err(|_| "Failed setting creation context home directory path".to_string()),
         Err(_) => {
             return Err("Failed looking up default context for home directory path".to_string());
         }
@@ -46,12 +45,12 @@ pub enum SelinuxLabeler {
     None,
     Enabled {
         labeler: Labeler<File>,
-        sel_lookup_path_raw: String,
+        sel_lookup_path_raw: PathBuf,
     },
 }
 
 impl SelinuxLabeler {
-    pub fn new(gid: u32, home_prefix: &str) -> Result<Self, String> {
+    pub fn new(gid: u32, home_prefix: &Path) -> Result<Self, String> {
         let labeler = get_labeler()?;
 
         // Construct a path for SELinux context lookups.
@@ -64,7 +63,7 @@ impl SelinuxLabeler {
         #[cfg(all(target_family = "unix", feature = "selinux"))]
         // Yes, gid, because we use the GID number for both the user's UID and primary GID
         let sel_lookup_path_raw = match get_user_name_by_uid(gid) {
-            Some(v) => format!("{}{}", home_prefix, v.to_str().unwrap()),
+            Some(v) => home_prefix.join(v),
             None => {
                 return Err("Failed looking up username by uid for SELinux relabeling".to_string());
             }
@@ -97,23 +96,32 @@ impl SelinuxLabeler {
                 labeler,
                 sel_lookup_path_raw,
             } => {
-                let sel_lookup_path = Path::new(&sel_lookup_path_raw).join(path.as_ref());
-                do_setfscreatecon_for_path(&sel_lookup_path.to_str().unwrap().to_string(), &labeler)
+                let sel_lookup_path = sel_lookup_path_raw.join(path.as_ref());
+                do_setfscreatecon_for_path(&sel_lookup_path, &labeler)
             }
         }
     }
 
-    pub fn setup_equivalence_rule<P: AsRef<Path>>(&self, path: P) -> Result<(), String> {
+    pub fn setup_equivalence_rule<P: AsRef<OsStr>>(&self, path: P) -> Result<(), String> {
         match &self {
             SelinuxLabeler::None => Ok(()),
             SelinuxLabeler::Enabled {
                 labeler: _,
                 sel_lookup_path_raw,
-            } => Command::new("semanage")
-                .args(["fcontext", "-ae", sel_lookup_path_raw, path.as_ref()])
-                .spawn()
-                .map(|_| ())
-                .map_err(|_| "Failed creating SELinux policy equivalence rule".to_string()),
+            } => {
+                // Looks weird but needed to force the type to be os str
+                let arg1: &OsStr = "fcontext".as_ref();
+                Command::new("semanage")
+                    .args([
+                        arg1,
+                        "-ae".as_ref(),
+                        sel_lookup_path_raw.as_ref(),
+                        path.as_ref(),
+                    ])
+                    .spawn()
+                    .map(|_| ())
+                    .map_err(|_| "Failed creating SELinux policy equivalence rule".to_string())
+            }
         }
     }