refactor: Move loglogdata out of network.c.

With another bit of refactoring, this can be an independent bit of code
that can be independently benchmarked and tested.

CMakeLists.txt

@@ -309,6 +309,8 @@ set(toxcore_SOURCES
   toxcore/mono_time.h
   toxcore/net_crypto.c
   toxcore/net_crypto.h
+  toxcore/net_log.c
+  toxcore/net_log.h
   toxcore/net_profile.c
   toxcore/net_profile.h
   toxcore/network.c

toxcore/BUILD.bazel

@@ -368,8 +368,14 @@ cc_library(
 
 cc_library(
     name = "network",
-    srcs = ["network.c"],
-    hdrs = ["network.h"],
+    srcs = [
+        "net_log.c",
+        "network.c",
+    ],
+    hdrs = [
+        "net_log.h",
+        "network.h",
+    ],
     visibility = [
         "//c-toxcore/auto_tests:__pkg__",
         "//c-toxcore/other:__pkg__",

toxcore/Makefile.inc

@@ -100,6 +100,8 @@ libtoxcore_la_SOURCES = ../third_party/cmp/cmp.c \
                         ../toxcore/mono_time.h \
                         ../toxcore/net_crypto.c \
                         ../toxcore/net_crypto.h \
+                        ../toxcore/net_log.c \
+                        ../toxcore/net_log.h \
                         ../toxcore/net_profile.c \
                         ../toxcore/net_profile.h \
                         ../toxcore/network.c \

toxcore/net_log.c

@@ -0,0 +1,181 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2016-2025 The TokTok team.
+ * Copyright © 2013 Tox project.
+ */
+
+/**
+ * Network traffic logging function.
+ */
+
+#include "net_log.h"
+
+#include "attributes.h"
+#include "network.h"
+#include "util.h"
+
+non_null()
+static uint32_t data_0(uint16_t buflen, const uint8_t *buffer)
+{
+    uint32_t data = 0;
+
+    if (buflen > 4) {
+        net_unpack_u32(buffer + 1, &data);
+    }
+
+    return data;
+}
+non_null()
+static uint32_t data_1(uint16_t buflen, const uint8_t *buffer)
+{
+    uint32_t data = 0;
+
+    if (buflen > 8) {
+        net_unpack_u32(buffer + 5, &data);
+    }
+
+    return data;
+}
+
+static const char *net_packet_type_name(Net_Packet_Type type)
+{
+    switch (type) {
+        case NET_PACKET_PING_REQUEST:
+            return "PING_REQUEST";
+
+        case NET_PACKET_PING_RESPONSE:
+            return "PING_RESPONSE";
+
+        case NET_PACKET_GET_NODES:
+            return "GET_NODES";
+
+        case NET_PACKET_SEND_NODES_IPV6:
+            return "SEND_NODES_IPV6";
+
+        case NET_PACKET_COOKIE_REQUEST:
+            return "COOKIE_REQUEST";
+
+        case NET_PACKET_COOKIE_RESPONSE:
+            return "COOKIE_RESPONSE";
+
+        case NET_PACKET_CRYPTO_HS:
+            return "CRYPTO_HS";
+
+        case NET_PACKET_CRYPTO_DATA:
+            return "CRYPTO_DATA";
+
+        case NET_PACKET_CRYPTO:
+            return "CRYPTO";
+
+        case NET_PACKET_GC_HANDSHAKE:
+            return "GC_HANDSHAKE";
+
+        case NET_PACKET_GC_LOSSLESS:
+            return "GC_LOSSLESS";
+
+        case NET_PACKET_GC_LOSSY:
+            return "GC_LOSSY";
+
+        case NET_PACKET_LAN_DISCOVERY:
+            return "LAN_DISCOVERY";
+
+        case NET_PACKET_ONION_SEND_INITIAL:
+            return "ONION_SEND_INITIAL";
+
+        case NET_PACKET_ONION_SEND_1:
+            return "ONION_SEND_1";
+
+        case NET_PACKET_ONION_SEND_2:
+            return "ONION_SEND_2";
+
+        case NET_PACKET_ANNOUNCE_REQUEST_OLD:
+            return "ANNOUNCE_REQUEST_OLD";
+
+        case NET_PACKET_ANNOUNCE_RESPONSE_OLD:
+            return "ANNOUNCE_RESPONSE_OLD";
+
+        case NET_PACKET_ONION_DATA_REQUEST:
+            return "ONION_DATA_REQUEST";
+
+        case NET_PACKET_ONION_DATA_RESPONSE:
+            return "ONION_DATA_RESPONSE";
+
+        case NET_PACKET_ANNOUNCE_REQUEST:
+            return "ANNOUNCE_REQUEST";
+
+        case NET_PACKET_ANNOUNCE_RESPONSE:
+            return "ANNOUNCE_RESPONSE";
+
+        case NET_PACKET_ONION_RECV_3:
+            return "ONION_RECV_3";
+
+        case NET_PACKET_ONION_RECV_2:
+            return "ONION_RECV_2";
+
+        case NET_PACKET_ONION_RECV_1:
+            return "ONION_RECV_1";
+
+        case NET_PACKET_FORWARD_REQUEST:
+            return "FORWARD_REQUEST";
+
+        case NET_PACKET_FORWARDING:
+            return "FORWARDING";
+
+        case NET_PACKET_FORWARD_REPLY:
+            return "FORWARD_REPLY";
+
+        case NET_PACKET_DATA_SEARCH_REQUEST:
+            return "DATA_SEARCH_REQUEST";
+
+        case NET_PACKET_DATA_SEARCH_RESPONSE:
+            return "DATA_SEARCH_RESPONSE";
+
+        case NET_PACKET_DATA_RETRIEVE_REQUEST:
+            return "DATA_RETRIEVE_REQUEST";
+
+        case NET_PACKET_DATA_RETRIEVE_RESPONSE:
+            return "DATA_RETRIEVE_RESPONSE";
+
+        case NET_PACKET_STORE_ANNOUNCE_REQUEST:
+            return "STORE_ANNOUNCE_REQUEST";
+
+        case NET_PACKET_STORE_ANNOUNCE_RESPONSE:
+            return "STORE_ANNOUNCE_RESPONSE";
+
+        case BOOTSTRAP_INFO_PACKET_ID:
+            return "BOOTSTRAP_INFO";
+
+        case NET_PACKET_MAX:
+            return "MAX";
+    }
+
+    return "<unknown>";
+}
+
+void net_log_data(const Logger *log, const char *message, const uint8_t *buffer,
+                  uint16_t buflen, const IP_Port *ip_port, long res)
+{
+    if (res < 0) { /* Windows doesn't necessarily know `%zu` */
+        Ip_Ntoa ip_str;
+        const int error = net_error();
+        Net_Strerror error_str;
+        LOGGER_TRACE(log, "[%02x = %-21s] %s %3u%c %s:%u (%u: %s) | %08x%08x...%02x",
+                     buffer[0], net_packet_type_name((Net_Packet_Type)buffer[0]), message,
+                     min_u16(buflen, 999), 'E',
+                     net_ip_ntoa(&ip_port->ip, &ip_str), net_ntohs(ip_port->port), error,
+                     net_strerror(error, &error_str), data_0(buflen, buffer), data_1(buflen, buffer), buffer[buflen - 1]);
+    } else if ((res > 0) && ((size_t)res <= buflen)) {
+        Ip_Ntoa ip_str;
+        LOGGER_TRACE(log, "[%02x = %-21s] %s %3u%c %s:%u (%u: %s) | %08x%08x...%02x",
+                     buffer[0], net_packet_type_name((Net_Packet_Type)buffer[0]), message,
+                     min_u16(res, 999), (size_t)res < buflen ? '<' : '=',
+                     net_ip_ntoa(&ip_port->ip, &ip_str), net_ntohs(ip_port->port), 0, "OK",
+                     data_0(buflen, buffer), data_1(buflen, buffer), buffer[buflen - 1]);
+    } else { /* empty or overwrite */
+        Ip_Ntoa ip_str;
+        LOGGER_TRACE(log, "[%02x = %-21s] %s %lu%c%u %s:%u (%u: %s) | %08x%08x...%02x",
+                     buffer[0], net_packet_type_name((Net_Packet_Type)buffer[0]), message,
+                     res, res == 0 ? '!' : '>', buflen,
+                     net_ip_ntoa(&ip_port->ip, &ip_str), net_ntohs(ip_port->port), 0, "OK",
+                     data_0(buflen, buffer), data_1(buflen, buffer), buffer[buflen - 1]);
+    }
+}

toxcore/net_log.h

@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2016-2025 The TokTok team.
+ * Copyright © 2013 Tox project.
+ */
+
+#ifndef C_TOXCORE_TOXCORE_NET_LOG_H
+#define C_TOXCORE_TOXCORE_NET_LOG_H
+
+#include <stdbool.h>    // bool
+#include <stdint.h>     // uint*_t
+
+#include "attributes.h"
+#include "logger.h"
+#include "network.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+non_null()
+void net_log_data(const Logger *log, const char *message, const uint8_t *buffer,
+                  uint16_t buflen, const IP_Port *ip_port, long res);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* C_TOXCORE_TOXCORE_NET_LOG_H */