hostname and free not found, serial number on y211ga

[storepeter]

I just installed this software on a new camera to get rtsp support, and it works as expected, but

on the status page, only the video link is there the rest of he fields are empty.

When I ssh into the camera and execute stautus.json I get:

root@yi-cam1:~#  /tmp/sd/yi-hack/www/cgi-bin/status.json 
Content-type: application/json

/tmp/sd/yi-hack/www/cgi-bin/status.json: line 6: hostname: not found
/tmp/sd/yi-hack/www/cgi-bin/status.json: line 23: free: not found
/tmp/sd/yi-hack/www/cgi-bin/status.json: line 24: free: not found
{
"name":"yi-hack-allwinner-v2",
"hostname":"",
"fw_version":"0.1.8",
"home_version":"9.0.36.00_202011101611",
"model_suffix":"y211ga",
"ptz":"no",
"serial_number":"


FFFFFFFFFFFFFFFF",
"local_time":"Mon Aug 23 14:14:53 GMT 2021",
"uptime":"18924.75",
"load_avg":"1.97 1.83 1.77",
"total_memory":"",
"free_memory":"",
"free_sd":"88%",
"local_ip":"192.168.2.162",
"netmask":"255.255.255.0",
"gateway":"192.168.2.1",
"mac_addr":"84:7A:B6:60:70:92",
"wlan_essid":"Wi2-ve",
"wlan_strength":"50" 
}root@yi-cam1:~#

My camera is an IFUS... y211ga, but it looks like the Serial number is at position 656 (not 784)
hostname and free is not available on this system, I could modify the script, to extract the info from /tmp/sd/yi-hack/etc/hostname and /proc/meminfo but I was wondering if there is a better approach

Anyway here is the modification I made to make it work.

diff -Naur yi-hack/www/cgi-bin/status.json status.json 
--- yi-hack/www/cgi-bin/status.json	2021-06-17 16:35:43.000000000 -0400
+++ status.json	2021-08-23 10:46:00.432358750 -0400
@@ -3,7 +3,7 @@
 printf "Content-type: application/json\r\n\r\n"
 
 NAME="yi-hack-allwinner-v2"
-HOSTNAME=$(hostname)
+HOSTNAME=$(cat /tmp/sd/yi-hack/etc/hostname)
 FW_VERSION=$(cat /tmp/sd/yi-hack/version)
 HOME_VERSION=$(cat /home/app/.appver)
 MODEL_SUFFIX=$(cat /tmp/sd/yi-hack/model_suffix)
@@ -12,7 +12,7 @@
 else
     PTZ="no"
 fi
-if [ "$MODEL_SUFFIX" == "y211ga" ] || [ "$MODEL_SUFFIX" == "h60ga" ]; then
+if [ "$MODEL_SUFFIX" == "h60ga" ]; then
     SERIAL_NUMBER=$(dd bs=1 count=20 skip=784 if=/tmp/mmap.info 2>/dev/null | cut -c1-20)
 else
     SERIAL_NUMBER=$(dd bs=1 count=20 skip=656 if=/tmp/mmap.info 2>/dev/null | cut -c1-20)
@@ -20,8 +20,8 @@
 LOCAL_TIME=$(date)
 UPTIME=$(cat /proc/uptime | cut -d ' ' -f1)
 LOAD_AVG=$(cat /proc/loadavg | cut -d ' ' -f1-3)
-TOTAL_MEMORY=$(free -k | awk 'NR==2{print $2}')
-FREE_MEMORY=$(free -k | awk 'NR==2{print $4+$6+$7}')
+TOTAL_MEMORY=$(awk '/MemTotal/{print $2}' /proc/meminfo)
+FREE_MEMORY=$(awk '/MemAvailable/{print $2}' /proc/meminfo)
 FREE_SD=$(df | grep -m1 '/tmp/sd' |  grep mmc | awk '{print $5}' | tr -d '%')
 if [ -z "$FREE_SD" ]; then
     FREE_SD="N/A"

With this modification I get:

root@yi-cam1:~# /tmp/sd/yi-hack/www/cgi-bin/status.json 
Content-type: application/json

{
"name":"yi-hack-allwinner-v2",
"hostname":"yi-cam1",
"fw_version":"0.1.8",
"home_version":"9.0.36.00_202011101611",
"model_suffix":"y211ga",
"ptz":"no",
"serial_number":"IFUSY65Q5HJHAE210315",
"local_time":"Mon Aug 23 14:50:05 GMT 2021",
"uptime":"873.00",
"load_avg":"0.96 1.60 1.09",
"total_memory":"60912",
"free_memory":"0",
"free_sd":"88%",
"local_ip":"192.168.2.162",
"netmask":"255.255.255.0",
"gateway":"192.168.2.1",
"mac_addr":"84:7A:B6:60:70:92",
"wlan_essid":"Wi2-ve",
"wlan_strength":"53" 
}root@yi-cam1:~#