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v0.17.0 mtls added to network chain, sinks, and sources

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lixen
2026-08-29 18:44:44 -04:00
parent 5fbd5c71cf
commit dd665bb339
26 changed files with 2293 additions and 488 deletions
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internal/source/httpchain/httpchain.go
+82 -24
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@@ -6,6 +6,7 @@ import (
"crypto/tls"
"errors"
"fmt"
"maps"
"net"
"net/http"
"strconv"
@@ -14,6 +15,7 @@ import (
"sync/atomic"
"time"
"logwisp/internal/authz"
"logwisp/internal/chain"
"logwisp/internal/config"
"logwisp/internal/core"
@@ -54,7 +56,10 @@ type HTTPChainSource struct {
// TLS
tlsConfig *tls.Config
// Session cache: one session per remote host + declared node
// Authorization
auth *authz.Policy
// Session cache: one session per remote host + node + authenticated identity
sessions map[string]string // key -> sessionID
sessionsMu sync.Mutex
@@ -104,6 +109,10 @@ func NewHTTPChainSourcePlugin(
if err != nil {
return nil, err
}
authPolicy, err := authz.New(opts.Auth, opts.TLS, authz.RoleChainListener)
if err != nil {
return nil, err
}
s := &HTTPChainSource{
id: id,
@@ -113,6 +122,7 @@ func NewHTTPChainSourcePlugin(
sessions: make(map[string]string),
logger: logger,
tlsConfig: tlsCfg,
auth: authPolicy,
}
s.lastEntryTime.Store(time.Time{})
@@ -123,7 +133,21 @@ func NewHTTPChainSourcePlugin(
"port", opts.Port,
"ingest_path", opts.IngestPath,
"tls", tlsCfg != nil,
"mtls", tlsCfg != nil && tlsCfg.ClientAuth == tls.RequireAndVerifyClientCert)
"mtls", tlsCfg != nil && tlsCfg.ClientAuth == tls.RequireAndVerifyClientCert,
"auth", authPolicy.Describe())
if authPolicy.Unrestricted() {
logger.Warn("msg", "Auth policy admits any identity the configured CA vouches for",
"component", "http_chain_source",
"instance_id", id,
"hint", "set auth.allow or auth.allow_patterns to authorize named peers")
}
if authPolicy.BindsNode() {
logger.Info("msg", "Node labels bound to peer identity; trust_node is ignored",
"component", "http_chain_source",
"instance_id", id,
"node_binding", authPolicy.NodeBinding(),
"trust_node", opts.TrustNode)
}
return s, nil
}
@@ -132,9 +156,9 @@ func (s *HTTPChainSource) Capabilities() []core.Capability {
caps := []core.Capability{core.CapSessionAware, core.CapMultiSession}
if s.tlsConfig != nil {
caps = append(caps, core.CapTLS)
if s.tlsConfig.ClientAuth == tls.RequireAndVerifyClientCert {
caps = append(caps, core.CapAuth) // mTLS is authentication
}
}
if s.auth.Enabled() {
caps = append(caps, core.CapAuth) // authorizes peers, not just the CA
}
return caps
}
@@ -226,6 +250,19 @@ func (s *HTTPChainSource) GetStats() source.SourceStats {
cachedSessions := len(s.sessions)
s.sessionsMu.Unlock()
details := map[string]any{
"host": s.config.Host,
"port": s.config.Port,
"ingest_path": s.config.IngestPath,
"tls": s.tlsConfig != nil,
"total_requests": s.totalRequests.Load(),
"rejected_requests": s.rejectedRequests.Load(),
"parse_errors": s.parseErrors.Load(),
"cached_sessions": cachedSessions,
"trust_node": s.config.TrustNode,
}
maps.Copy(details, s.auth.Stats())
return source.SourceStats{
ID: s.id,
Type: "http_chain",
@@ -233,17 +270,7 @@ func (s *HTTPChainSource) GetStats() source.SourceStats {
DroppedEntries: s.droppedEntries.Load(),
StartTime: s.startTime,
LastEntryTime: lastEntry,
Details: map[string]any{
"host": s.config.Host,
"port": s.config.Port,
"ingest_path": s.config.IngestPath,
"tls": s.tlsConfig != nil,
"total_requests": s.totalRequests.Load(),
"rejected_requests": s.rejectedRequests.Load(),
"parse_errors": s.parseErrors.Load(),
"cached_sessions": cachedSessions,
"trust_node": s.config.TrustNode,
},
Details: details,
}
}
@@ -252,6 +279,22 @@ func (s *HTTPChainSource) GetStats() source.SourceStats {
func (s *HTTPChainSource) handleIngest(w http.ResponseWriter, r *http.Request) {
s.totalRequests.Add(1)
// Authorize before the body is read: an unauthorized sender should not get
// to stream max_body_bytes into the process. 403 is distinct from the 400
// used for protocol errors, so a sender can tell "not allowed" from
// "malformed batch".
ident, err := s.auth.Authorize(r.TLS)
if err != nil {
s.rejectedRequests.Add(1)
s.logger.Warn("msg", "Request rejected by auth policy",
"component", "http_chain_source",
"instance_id", s.id,
"remote_addr", r.RemoteAddr,
"error", err)
http.Error(w, "forbidden", http.StatusForbidden)
return
}
if r.Header.Get(chain.HeaderProtocol) != strconv.Itoa(chain.ProtocolVersion) {
s.rejectedRequests.Add(1)
http.Error(w, "unsupported protocol version", http.StatusBadRequest)
@@ -262,10 +305,22 @@ func (s *HTTPChainSource) handleIngest(w http.ResponseWriter, r *http.Request) {
if host, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
remoteHost = host
}
connNode := r.Header.Get(chain.HeaderNode)
if connNode == "" || !s.config.TrustNode {
connNode = remoteHost
declaredNode := r.Header.Get(chain.HeaderNode)
connNode, err := s.auth.ResolveNode(declaredNode, remoteHost, s.config.TrustNode, ident)
if err != nil {
s.rejectedRequests.Add(1)
s.logger.Warn("msg", "Request rejected by node binding",
"component", "http_chain_source",
"instance_id", s.id,
"remote_addr", r.RemoteAddr,
"declared_node", declaredNode,
"error", err)
http.Error(w, "forbidden", http.StatusForbidden)
return
}
// force relabels every entry, so a sender cannot smuggle a foreign origin
// through the per-entry node field either
trustEntryNode := s.auth.TrustsEntryNode(s.config.TrustNode)
body := http.MaxBytesReader(w, r.Body, s.config.MaxBodyBytes)
scanner := bufio.NewScanner(body)
@@ -277,7 +332,7 @@ func (s *HTTPChainSource) handleIngest(w http.ResponseWriter, r *http.Request) {
if len(line) == 0 {
continue
}
entry, err := chain.DecodeEntry(line, connNode, s.config.TrustNode)
entry, err := chain.DecodeEntry(line, connNode, trustEntryNode)
if err != nil {
// Content error within a clean transfer: skip line, keep batch
s.parseErrors.Add(1)
@@ -304,15 +359,17 @@ func (s *HTTPChainSource) handleIngest(w http.ResponseWriter, r *http.Request) {
for _, entry := range entries {
s.publish(entry)
}
s.proxy.UpdateActivity(s.sessionFor(remoteHost, connNode, r.TLS))
s.proxy.UpdateActivity(s.sessionFor(remoteHost, connNode, r.TLS, ident))
w.Header().Set(chain.HeaderAccepted, strconv.Itoa(len(entries)))
w.WriteHeader(http.StatusNoContent)
}
// sessionFor returns the cached session for a remote+node, recreating after idle expiry
func (s *HTTPChainSource) sessionFor(remoteHost, node string, cs *tls.ConnectionState) string {
key := remoteHost + "|" + node
// sessionFor returns the cached session for a remote+node+identity,
// recreating after idle expiry. Identity is part of the key so two peers
// sharing a remote address never share a session.
func (s *HTTPChainSource) sessionFor(remoteHost, node string, cs *tls.ConnectionState, ident authz.Identity) string {
key := remoteHost + "|" + node + "|" + ident.Name
s.sessionsMu.Lock()
defer s.sessionsMu.Unlock()
@@ -331,6 +388,7 @@ func (s *HTTPChainSource) sessionFor(remoteHost, node string, cs *tls.Connection
meta["tls_peer_cn"] = cn
}
}
ident.Apply(meta)
sess := s.proxy.CreateSession(remoteHost, meta)
s.sessions[key] = sess.ID
return sess.ID