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stcp: ed25519 pubkey exchange in handshake, fix instance destroy segfault, fix chat_tcp_test

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- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll
- stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close
- utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP),
  add deferred drain in both Phase J and L
- stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39,
  exchange ed25519_pubkey in both handshake directions
- etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in
  etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb
- chat_sync.c: fix lk->conn NULL dereference for TCP links
- test_stcp.c: update stcp_server_create/stcp_client_connect callsites
- tools/chat_tcp_test: change transport udp→tcp
This commit is contained in:
evgeny committed 2026-08-07 00:48:27 +03:00
1 parent a3783b5f55
commit 38c9f229bc
1272 files changed
+968388 -1
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tests/buffer_overflow_fix.patch
+38
View File
@@ -0,0 +1,38 @@
--- test_etcp_simple_traffic.c.backup
+++ test_etcp_simple_traffic.c
@@ -172,19 +172,25 @@
DEBUG_INFO(DEBUG_CATEGORY_ETCP, "SIMULATE RX: inst=%s, len=%u",
inst->is_server ? "server" : "client", len);
- // Create a mock ETCP_DGRAM for processing
- struct ETCP_DGRAM mock_dgram;
- memset(&mock_dgram, 0, sizeof(mock_dgram));
- mock_dgram.link = NULL; // Will be set by connection processing
- mock_dgram.data_len = len > 1500 ? 1500 : len;
- mock_dgram.timestamp = get_current_timestamp();
- if (mock_dgram.data_len > 0) {
- memcpy(mock_dgram.data, data, mock_dgram.data_len);
+ // Create a mock ETCP_DGRAM for processing with proper allocation
+ size_t dgram_size = sizeof(struct ETCP_DGRAM) + (len > 1500 ? 1500 : len);
+ struct ETCP_DGRAM* mock_dgram = malloc(dgram_size);
+ if (!mock_dgram) {
+ DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Failed to allocate mock dgram");
+ return;
+ }
+ memset(mock_dgram, 0, dgram_size);
+ mock_dgram->link = NULL; // Will be set by connection processing
+ mock_dgram->data_len = len > 1500 ? 1500 : len;
+ mock_dgram->timestamp = get_current_timestamp();
+ if (mock_dgram->data_len > 0) {
+ memcpy(mock_dgram->data, data, mock_dgram->data_len);
}
// Process through ETCP input
- etcp_conn_input(&mock_dgram);
+ etcp_conn_input(mock_dgram);
+
+ // Free the allocated memory
+ free(mock_dgram);
}
// Simulate packet transmission for analysis