ps5-payload-dev · sunnyqeen · Dec 10, 2025 · Dec 10, 2025
diff --git a/Makefile.pc b/Makefile.pc
@@ -19,7 +19,7 @@ VERSION_TAG := $(shell git describe --abbrev=10 --dirty --always --tags)
 PYTHON ?= python3
 
 BIN   := websrv.pc
-SRCS   := src/main.c src/websrv.c src/asset.c src/fs.c src/mime.c
+SRCS   := src/main.c src/websrv.c src/asset.c src/fs.c src/mime.c src/hwmonitor.c
 SRCS   += src/pc/sys.c
 
 CFLAGS := -Wall -DVERSION_TAG=\"$(VERSION_TAG)\"

diff --git a/Makefile.ps5 b/Makefile.ps5
@@ -29,7 +29,7 @@ PYTHON ?= python3
 
 BIN    := websrv-ps5.elf
 
-SRCS   := src/main.c src/websrv.c src/asset.c src/fs.c src/mime.c
+SRCS   := src/main.c src/websrv.c src/asset.c src/fs.c src/mime.c src/hwmonitor.c
 SRCS   += src/mdns.c src/smb.c
 SRCS   += src/ps5/sys.c src/ps5/pt.c src/ps5/elfldr.c src/ps5/hbldr.c src/ps5/notify.c
 

diff --git a/README.md b/README.md
@@ -28,6 +28,7 @@ Examples:
 - http://ps5:8080/smb?addr=192.168.1.1 - List shares on a remote SMB host (json)
 - http://ps5:8080/smb/share?addr=192.168.1.1 - List files and folders shared by a remote SMB host (json)
 - http://ps5:8080/smb/share/file?addr=192.168.1.1 - Download a remote SMB file via websrv
+- http://ps5:8080/hwmonitor - Monitor CPU and SOC temperatures
 
 ## Installing Homebrew
 The web server will search for homebrew in /data/homebrew, /mnt/usb%d/homebrew, /mnt/ext%d/homebrew,

diff --git a/src/hwmonitor.c b/src/hwmonitor.c
@@ -0,0 +1,128 @@
+/* Copyright (C) 2025 Sunny Qeen
+   Copyright (C) 2024 John Törnblom
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING. If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "hwmonitor.h"
+#include "mime.h"
+#include "websrv.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define DATA_BUFFER_SIZE_MAX 4096
+#define SOC_SENSOR_MAX 64
+
+int sys_get_cpu_temperature(int* temperature);
+int sys_get_soc_temperature(int index, int* temperature);
+
+enum MHD_Result hwmonitor_request(struct MHD_Connection *conn)
+{
+  const char* mime = "text/html";
+  const char* fmt;
+  int size = 0;
+  bool json = false;
+  int cpu_temperature = 0, soc_temperature[SOC_SENSOR_MAX] = {0}, soc_index;
+  enum MHD_Result ret = MHD_NO;
+  struct MHD_Response *resp;
+  char data[DATA_BUFFER_SIZE_MAX];
+  const char* html_header =
+        "<!DOCTYPE html>\r\n"
+        "<html>\r\n"
+        "<meta http-equiv=\"refresh\" content=\"2\">\r\n"
+        "<head>\r\n"
+        "<title>HWMonitor</title>\r\n"
+        "</head>\r\n"
+        "<body>\r\n"
+        "<h1>HWMonitor</h1>\r\n";
+
+  const char* html_footer =
+        "</body>\r\n"
+        "</html>\r\n";
+
+  fmt = MHD_lookup_connection_value(conn, MHD_GET_ARGUMENT_KIND, "fmt");
+  if(fmt && !strcmp(fmt, "json")) {
+    mime = "application/json";
+    json = true;
+  }
+
+  sys_get_cpu_temperature(&cpu_temperature);
+  for(soc_index = 0; soc_index < SOC_SENSOR_MAX; soc_index++) {
+    if(sys_get_soc_temperature(soc_index, soc_temperature + soc_index)) {
+      break;
+    }
+  }
+
+  if(json) {
+    int n = snprintf(data, DATA_BUFFER_SIZE_MAX, "{");
+    size += n;
+
+    if(cpu_temperature > 0) {
+      n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "\"cpu_temperature\":%d,", cpu_temperature);
+      size += n;
+    }
+
+    if(soc_index > 0) {
+      n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "\"soc_temperature\":[");
+      size += n;
+      for(int i = 0; i < soc_index; i++) {
+        n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "%d,", soc_temperature[i]);
+        size += n;
+      }
+
+      size--;
+      n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "],");
+      size += n;
+    }
+
+    if(size > 1) {
+      size--;
+    }
+    n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "}");
+    size += n;
+  } else {
+    int n = snprintf(data, DATA_BUFFER_SIZE_MAX, "%s", html_header);
+    size += n;
+
+    if(cpu_temperature > 0) {
+      n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "<p>CPU Temperature: %d&deg;C %d&deg;F</p>\r\n", cpu_temperature, cpu_temperature * 18 / 10 + 32);
+      size += n;
+    }
+
+    if(soc_index > 0) {
+      n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "<p>SOC Temperature:</p>\r\n");
+      size += n;
+      for(int i = 0; i < soc_index; i++) {
+        n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "<p>&emsp;[S%02d]: %d&deg;C %d&deg;F</p>\r\n", i + 1, soc_temperature[i], soc_temperature[i] * 18 / 10 + 32);
+        size += n;
+      }
+    }
+
+    n = snprintf(data + size, DATA_BUFFER_SIZE_MAX - size, "%s", html_footer);
+    size += n;
+  }
+
+  if((resp=MHD_create_response_from_buffer(size, data,
+                       MHD_RESPMEM_PERSISTENT))) {
+    MHD_add_response_header(resp, MHD_HTTP_HEADER_CONTENT_TYPE,
+                            mime);
+    ret = websrv_queue_response(conn, MHD_HTTP_OK, resp);
+    MHD_destroy_response(resp);
+  }
+
+  return ret;
+}
diff --git a/src/hwmonitor.h b/src/hwmonitor.h
@@ -0,0 +1,25 @@
+/* Copyright (C) 2025 Sunny Qeen
+   Copyright (C) 2024 John Törnblom
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING. If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#pragma once
+
+#include <microhttpd.h>
+
+/**
+ * Respond to a hwmonitor request.
+ **/
+enum MHD_Result hwmonitor_request(struct MHD_Connection *conn);
diff --git a/src/pc/sys.c b/src/pc/sys.c
@@ -87,3 +87,14 @@ sys_launch_payload(const char* cwd, uint8_t* elf, size_t elf_size,
   return sys_launch_homebrew(cwd, filename, args, env);
 }
 
+int
+sys_get_cpu_temperature(int* temperature) {
+  printf("get cpu temperature");
+  return -1;
+}
+
+int
+sys_get_soc_temperature(int index, int* temperature) {
+  printf("get soc[%02d] temperature", index);
+  return -1;
+}
diff --git a/src/ps5/sys.c b/src/ps5/sys.c
@@ -61,6 +61,8 @@ int sceSystemServiceKillApp(int app_id, int how, int reason, int core_dump);
 int sceSystemServiceLaunchApp(const char* title_id, char** argv,
 			      app_launch_ctx_t* ctx);
 
+int sceKernelGetCpuTemperature(int *);
+int sceKernelGetSocSensorTemperature(int, int *);
 
 /**
  * Decode an escaped argument.
@@ -372,6 +374,19 @@ sys_launch_title(const char* title_id, const char* args) {
   return err;
 }
 
+
+int
+sys_get_cpu_temperature(int* temperature) {
+  return sceKernelGetCpuTemperature(temperature);
+}
+
+
+int
+sys_get_soc_temperature(int index, int* temperature) {
+  return sceKernelGetSocSensorTemperature(index, temperature);
+}
+
+
 /**
  *
  **/

diff --git a/src/websrv.c b/src/websrv.c
@@ -31,6 +31,7 @@ along with this program; see the file COPYING. If not, see
 #include "smb.h"
 #include "sys.h"
 #include "version.h"
+#include "hwmonitor.h"
 #include "websrv.h"
 
 
@@ -324,6 +325,9 @@ websrv_on_request(void *cls, struct MHD_Connection *conn,
     if(!strcmp("/version", url)) {
       return version_request(conn);
     }
+    if(!strcmp("/hwmonitor", url)) {
+      return hwmonitor_request(conn);
+    }
     if(!strcmp("/", url) || !url[0]) {
       return asset_request(conn, "/index.html");
     }