First iteration of the WUPS-Backend as a .rpx/module for the SetupPayload

- Function replacements are not implemented yet
- Serveral features like the config menu are missing

Still WIP

source/utils/logger.c

@@ -0,0 +1,82 @@
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <utils/logger.h>
+#include <nsysnet/socket.h>
+#include <coreinit/debug.h>
+
+#include <coreinit/systeminfo.h>
+#include <coreinit/thread.h>
+
+static int log_socket __attribute__((section(".data")))= -1;
+static struct sockaddr_in connect_addr __attribute__((section(".data")));
+static volatile int log_lock __attribute__((section(".data"))) = 0;
+
+void log_init_() {
+    int broadcastEnable = 1;
+    log_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+    if (log_socket < 0)
+        return;
+
+    setsockopt(log_socket, SOL_SOCKET, SO_BROADCAST, &broadcastEnable, sizeof(broadcastEnable));
+
+    memset(&connect_addr, 0, sizeof(struct sockaddr_in));
+    connect_addr.sin_family = AF_INET;
+    connect_addr.sin_port = 4405;
+    connect_addr.sin_addr.s_addr = htonl(INADDR_BROADCAST);
+}
+
+void log_print_(const char *str) {
+    // socket is always 0 initially as it is in the BSS
+    if(log_socket < 0) {
+        return;
+    }
+
+    while(log_lock)
+        OSSleepTicks(OSMicrosecondsToTicks(1000));
+    log_lock = 1;
+
+    int len = strlen(str);
+    int ret;
+    while (len > 0) {
+        int block = len < 1400 ? len : 1400; // take max 1400 bytes per UDP packet
+        ret = sendto(log_socket, str, block, 0, (struct sockaddr *)&connect_addr, sizeof(struct sockaddr_in));
+        if(ret < 0)
+            break;
+
+        len -= ret;
+        str += ret;
+    }
+
+    log_lock = 0;
+}
+
+void OSFatal_printf(const char *format, ...) {
+    char tmp[512];
+    tmp[0] = 0;
+    va_list va;
+    va_start(va, format);
+    if((vsprintf(tmp, format, va) >= 0)) {
+        OSFatal(tmp);
+    }
+    va_end(va);
+}
+
+void log_printf_(const char *format, ...) {
+    if(log_socket < 0) {
+        return;
+    }
+
+    char tmp[512];
+    tmp[0] = 0;
+
+    va_list va;
+    va_start(va, format);
+    if((vsprintf(tmp, format, va) >= 0)) {
+        log_print_(tmp);
+    }
+    va_end(va);
+}
+