Add ulfius webserver support to macos native target

src/mesh/raspihttp/PiWebServer.cpp

@@ -34,7 +34,10 @@ Author: Marc Philipp Hammermann
 mail:   marchammermann@googlemail.com
 
 */
-#ifdef PORTDUINO_LINUX_HARDWARE
+// Mirrors the guard in PiWebServer.h — see comment there. macOS Homebrew
+// provides ulfius + deps; Linux pulls them via apt. Either way, this
+// translation unit only compiles when the headers are present.
+#ifdef ARCH_PORTDUINO
 #if __has_include(<ulfius.h>)
 #include "PiWebServer.h"
 #include "NodeDB.h"

src/mesh/raspihttp/PiWebServer.h

@@ -1,5 +1,9 @@
 #pragma once
-#ifdef PORTDUINO_LINUX_HARDWARE
+// Portduino webserver is built whenever the ulfius headers are reachable,
+// not only on Linux. macOS users can `brew install ulfius` to enable it;
+// without ulfius the entire body is skipped and main.cpp's matching
+// __has_include guard avoids referencing the type.
+#ifdef ARCH_PORTDUINO
 #if __has_include(<ulfius.h>)
 #include "PhoneAPI.h"
 #include "ulfius-cfg.h"

src/platform/portduino/PortduinoGlue.cpp

@@ -33,6 +33,15 @@
 #include <cxxabi.h>
 #endif
 
+#ifdef __APPLE__
+// Used by getMacAddr()'s macOS fallback to read the en0 link-layer address.
+// `getifaddrs()` is the BSD-portable way; `<net/if_dl.h>` provides the
+// `sockaddr_dl` cast and the `LLADDR()` macro that points at the 6-byte MAC.
+#include <ifaddrs.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#endif
+
 #include "platform/portduino/USBHal.h"
 
 portduino_config_struct portduino_config;
@@ -156,9 +165,35 @@ void getMacAddr(uint8_t *dmac)
         dmac[3] = di.bdaddr.b[2];
         dmac[4] = di.bdaddr.b[1];
         dmac[5] = di.bdaddr.b[0];
+#elif defined(__APPLE__)
+        // No BlueZ on macOS, but we can fall back to the host's primary
+        // network interface MAC. `en0` is Wi-Fi on every shipping Mac
+        // (Ethernet, when present, is en1 or higher), which gives the user
+        // the same kind of stable, host-derived identifier that the BlueZ
+        // path provides on Linux. If en0 isn't found or has no MAC, dmac is
+        // left untouched and the caller's "Blank MAC Address not allowed!"
+        // check will still fire — preserving existing behavior for users
+        // who deliberately rely on --hwid or YAML override.
+        struct ifaddrs *ifap = nullptr;
+        if (getifaddrs(&ifap) == 0) {
+            for (struct ifaddrs *p = ifap; p != nullptr; p = p->ifa_next) {
+                if (p->ifa_addr == nullptr || p->ifa_addr->sa_family != AF_LINK) {
+                    continue;
+                }
+                if (strcmp(p->ifa_name, "en0") != 0) {
+                    continue;
+                }
+                auto *sdl = reinterpret_cast<struct sockaddr_dl *>(p->ifa_addr);
+                if (sdl->sdl_alen == 6) {
+                    memcpy(dmac, LLADDR(sdl), 6);
+                    break;
+                }
+            }
+            freeifaddrs(ifap);
+        }
 #else
-        // No BlueZ on non-Linux hosts (e.g. macOS). Leave dmac at its default;
-        // the caller can override via the --hwid CLI flag or the YAML config.
+        // No platform-specific MAC source; leave dmac at its default. Caller
+        // can override via the --hwid CLI flag or the YAML config.
         (void)dmac;
 #endif
     }

variants/native/portduino/platformio.ini

@@ -125,6 +125,8 @@ test_testing_command =
 ;
 ; Prerequisites (Homebrew):
 ;   brew install platformio yaml-cpp libuv openssl@3 libusb argp-standalone pkg-config
+;   # Optional: enable the HTTP API (PiWebServer) on macOS:
+;   brew install ulfius
 ;
 ; The macOS-side patches now live upstream:
 ;   * meshtastic/platform-native — `String.h`-shadow shim, `-Wno-enum-constexpr-conversion`,
@@ -192,6 +194,13 @@ build_flags = ${portduino_base.build_flags_common}
   -DHAS_SCREEN=0
   -DMESHTASTIC_EXCLUDE_SCREEN=1
   !pkg-config --libs openssl --silence-errors || :
+  ; PiWebServer (src/mesh/raspihttp/PiWebServer.cpp) auto-engages when ulfius
+  ; headers are reachable via `#if __has_include(<ulfius.h>)`. The `|| :`
+  ; tail keeps the build green when the user hasn't run `brew install ulfius`
+  ; — they just don't get the HTTP API in that case.
+  !pkg-config --cflags --libs libulfius --silence-errors || :
+  !pkg-config --cflags --libs liborcania --silence-errors || :
+  !pkg-config --cflags --libs libyder --silence-errors || :
 ; src/input/Linux*.{cpp,h} drive evdev (`<linux/input.h>`) which doesn't exist
 ; on macOS. graphics/Panel_sdl.* and graphics/TFTDisplay.cpp pull LovyanGFX
 ; (which we lib_ignore on macOS for the <malloc.h> issue). Neither is needed
@@ -206,3 +215,28 @@ build_src_filter = ${native_base.build_src_filter}
 lib_ignore =
   ${portduino_base.lib_ignore}
   LovyanGFX
+
+; ---------------------------------------------------------------------------
+; Same as [env:native-macos] but built with AddressSanitizer for catching
+; use-after-free, leaks, and OOB access during local development. Headless
+; (no SDL/X11/libinput) so it stays cheap to build. Mirrors the shape of
+; [env:native-tft-debug] but without the TFT/X11 dependencies.
+;
+;   pio run -e native-macos-debug
+;   .pio/build/native-macos-debug/meshtasticd -s
+;
+; ASan runtime tuning (set in the shell before launching):
+;   ASAN_OPTIONS=detect_leaks=1:halt_on_error=0:abort_on_error=1
+;   MallocStackLogging=1   # macOS: nicer stack traces in malloc reports
+; ---------------------------------------------------------------------------
+[env:native-macos-debug]
+extends = native_base
+build_type = debug
+build_unflags = ${env:native-macos.build_unflags}
+build_flags = ${env:native-macos.build_flags}
+  -O0
+  -g
+  -fsanitize=address
+  -fno-omit-frame-pointer
+build_src_filter = ${env:native-macos.build_src_filter}
+lib_ignore = ${env:native-macos.lib_ignore}