fix chatgui: channel persistence & peer list after restart

- chat_core_sync_my_addresses(): remove private IP filter (192.168, 10.x, etc.)
  so LAN addresses are stored for direct connections
- topo_node_sqlite_channel_peers_all(): include peers without addresses
  in WELCOME message (was skipped entirely, causing empty peer list)
- chat_core_create_channel(): pass real local addresses to member_sync_put()
  instead of NULL,0
- chat_core_init(): log number of channels loaded from DB on startup

src/topo_node_sqlite.c

@@ -380,13 +380,17 @@ int topo_node_sqlite_channel_peers_all(sqlite3* db, const char* channel_id,
             addr_cnt++;
         }
         sqlite3_finalize(ast);
-        if (addr_cnt == 0) continue;
 
         size_t peer_needed = 8 + 32 + 32 + 1 + 64 + 8 + 64 + 8 + 1 + (size_t)nl + 1;
         size_t addr_sz = off - addr_start;
-        if (off + peer_needed > buf_sz) { sqlite3_finalize(stmt); return -2; }
-        memmove(buf + addr_start + peer_needed, buf + addr_start, addr_sz);
-        off = addr_start;
+        if (addr_cnt > 0) {
+            if (off + peer_needed > buf_sz) { sqlite3_finalize(stmt); return -2; }
+            memmove(buf + addr_start + peer_needed, buf + addr_start, addr_sz);
+            off = addr_start;
+        } else {
+            if (off + peer_needed + 1 > buf_sz) { sqlite3_finalize(stmt); return -2; }
+            addr_sz = 0;
+        }
         memcpy(buf + off, &node_id, 8); off += 8;
         memcpy(buf + off, x25519, 32); off += 32;
         memcpy(buf + off, ed_pub, 32); off += 32;

tools/chatgui/transport/chat_core.c

@@ -200,11 +200,13 @@ int chat_core_init(struct UTUN_INSTANCE* inst, const char* db_path) {
         sqlite3_stmt* stmt = NULL;
         if (sqlite3_prepare_v2(g_cc.db, "SELECT channel_id FROM channels ORDER BY created_at ASC",
                                 -1, &stmt, NULL) == SQLITE_OK) {
+            int loaded = 0;
             while (sqlite3_step(stmt) == SQLITE_ROW) {
                 const char* ch = (const char*)sqlite3_column_text(stmt, 0);
-                if (ch && ch[0]) chat_core_ensure_channel_ready(ch);
+                if (ch && ch[0]) { chat_core_ensure_channel_ready(ch); loaded++; }
             }
             sqlite3_finalize(stmt);
+            DEBUG_INFO(DEBUG_CATEGORY_CONNECTIVITY, "%s: loaded %d channels from DB", CC_ID, loaded);
         }
     }
 
@@ -322,12 +324,6 @@ void chat_core_sync_my_addresses(void) {
 
         if (sa->ss_family == AF_INET) {
             struct sockaddr_in* sin = (struct sockaddr_in*)sa;
-            uint8_t b0 = (uint8_t)(ntohl(sin->sin_addr.s_addr) >> 24);
-            if (b0 == 10 || b0 == 127 ||
-                (b0 == 172 && ((ntohl(sin->sin_addr.s_addr) >> 20) & 0xF0) == 16) ||
-                (b0 == 192 && (uint8_t)(ntohl(sin->sin_addr.s_addr) >> 16) == 168) ||
-                (b0 == 169 && (uint8_t)(ntohl(sin->sin_addr.s_addr) >> 16) == 254))
-                { sock = sock->next; continue; }
             sqlite3_bind_int64(ins, 1, (sqlite3_int64)g_cc.my_node_id);
             sqlite3_bind_int(ins, 2, 4);
             sqlite3_bind_blob(ins, 3, &sin->sin_addr, 4, SQLITE_STATIC);
@@ -335,8 +331,6 @@ void chat_core_sync_my_addresses(void) {
             sqlite3_step(ins); sqlite3_reset(ins);
         } else if (sa->ss_family == AF_INET6) {
             struct sockaddr_in6* sin6 = (struct sockaddr_in6*)sa;
-            if (sin6->sin6_addr.s6_addr[0] == 0xFE && (sin6->sin6_addr.s6_addr[1] & 0xC0) == 0x80)
-                { sock = sock->next; continue; }
             sqlite3_bind_int64(ins, 1, (sqlite3_int64)g_cc.my_node_id);
             sqlite3_bind_int(ins, 2, 6);
             sqlite3_bind_blob(ins, 3, &sin6->sin6_addr, 16, SQLITE_STATIC);
@@ -982,9 +976,26 @@ void chat_core_create_channel(struct chat_channel_create* req) {
             } else {
                 memset(join_sig, 0, 64);
             }
+            uint8_t my_addrs[256]; int my_addr_cnt = 0;
+            { struct ETCP_SOCKET* s = g_cc.inst->etcp_sockets;
+              while (s && my_addr_cnt < 16) {
+                  struct sockaddr_storage* sa = s->interface_addr.ss_family ? &s->interface_addr : NULL;
+                  if (!sa) sa = s->local_addr.ss_family ? &s->local_addr : NULL;
+                  if (sa && sa->ss_family == AF_INET) {
+                      struct sockaddr_in* sin = (struct sockaddr_in*)sa;
+                      my_addrs[my_addr_cnt * 7] = 4;
+                      memcpy(my_addrs + my_addr_cnt * 7 + 1, &sin->sin_addr, 4);
+                      uint16_t port = ntohs(sin->sin_port);
+                      my_addrs[my_addr_cnt * 7 + 5] = (uint8_t)(port >> 8);
+                      my_addrs[my_addr_cnt * 7 + 6] = (uint8_t)(port & 0xFF);
+                      my_addr_cnt++;
+                  }
+                  s = s->next;
+              }
+            }
             int mrc = member_sync_put(g_cc.inst, req->channel_id, myid,
                 g_cc.inst->my_keys.public_key, g_cc.inst->my_ed25519_pubkey,
-                join_sig, join_ts, NULL, 0, g_cc.inst->name, NULL, 0);
+                join_sig, join_ts, NULL, 0, g_cc.inst->name, my_addrs, my_addr_cnt);
             if (mrc != 0) {
                 DEBUG_ERROR(DEBUG_CATEGORY_CONNECTIVITY, "%s: member_sync_put(self) FAILED ch=%s rc=%d",
                             CC_ID, req->channel_id, mrc);