1 files changed, 168 insertions, 4 deletions

diff --git a/_ont/ont-huawei-ma5671a-rooted.md b/_ont/ont-huawei-ma5671a-rooted.md
index b4b3884..a4a6d14 100644
--- a/_ont/ont-huawei-ma5671a-rooted.md
+++ b/_ont/ont-huawei-ma5671a-rooted.md
@@ -7,10 +7,174 @@ layout: default
 
 # General setting
 
-[Edit sfp_a2_info file](https://forum.openwrt.org/t/support-ma5671a-sfp-gpon/48042/24)
+
+{% include alert.html content="Unlike the other firmware in this firmware, the data must be modified in a base64-encoded file. To simplify this, you can use the following web application." alert="Info" icon="svg-info" color="blue" %}
+
+## Web procedure
+
+
+1. Get `sfp_a2_info` and paste into the form
+
+<form id="huawei-rooted">
+    <div class="form-floating mb-3">
+        <input type="text" class="form-control" placeholder="sfp_a2_info input" name="sfp-a2-info" id="sfp-a2-info"    >
+        <label for="sfp-a2-info">sfp_a2_info input</label>
+    </div>
+    <div class="form-floating mb-3">
+        <input type="text" class="form-control" placeholder="GPON S/N" name="gpon-sn" id="gpon-sn" value="">
+        <label for="gpon-sn">GPON S/N in format  GPON00001234or 47504F4E12345678, empty for not modify it</label>
+    </div>
+    <div class="form-floating mb-3">
+        <input type="text" class="form-control" placeholder="GPON Ploam Password" name="gpon-password" id="gpon-password" value="">
+        <label for="gpon-password">GPON S/N in format 1234567890, 31323334353637383930 or 0x31323334353637383930, empty for not modify it</label>
+    </div>
+    <div class="form-floating mb-3">
+        <input type="text" class="form-control" placeholder="MAC address" name="mac-addr" id="mac-addr" value="">
+        <label for="mac-addr">MAC Address in format 48:57:02:da:be:ef, 48-57-02-da-be-ef or 485702dabeef, empty for not modify it</label>
+    </div>
+    <div class="mb-3">
+        <input type="submit" class="btn btn-primary" value="Calculate!">
+    </div>
+    <div class="form-floating mb-3">
+        <input readonly class="form-control" type="text" id="result" placeholder="sfp_a2_info result">
+        <label for="result">sfp_a2_info result</label>
+    </div>
+</form>
+<script>
+    var form = document.getElementById('huawei-rooted');
+    form.addEventListener('submit',(event) => {
+        event.preventDefault();
+        var fomrdata = new FormData(form);
+        var sfp_a2_info = fomrdata.get('sfp-a2-info');
+        var sfp_a2_info_arr = sfp_a2_info.split('@');
+        if(sfp_a2_info_arr.length > 10 && sfp_a2_info_arr[0] === 'begin-base64 644 sfp_a2_info ') {
+            var gpon_sn = fomrdata.get('gpon-sn');
+            if(gpon_sn.length == 12) {  
+                var vendor_id = gpon_sn.substring(0, 4);
+                var progressive = gpon_sn.substring(4);
+                var vendor_id_hex = ([...vendor_id].map((elem, n) => Number(vendor_id.charCodeAt(n)).toString(16)).join(''));
+                gpon_sn = vendor_id_hex+progressive;
+            }
+            if(gpon_sn.length == 16) {  
+                var hex = base64ToHex(sfp_a2_info_arr[6]);
+                hex = hex.substring(0,16) + gpon_sn + hex.substring(32);
+                sfp_a2_info_arr[6] = hexToBase64(hex);
+            }
+            var gpon_password = fomrdata.get('gpon-password');
+            if(gpon_password.length > 0) {
+                if(gpon_password.length <= 10) {  
+                    gpon_password = ([...gpon_password].map((elem, n) => Number(gpon_password.charCodeAt(n)).toString(16)).join(''));
+                    gpon_password += '0'.repeat(20-gpon_password.length);
+                }
+                else if(gpon_password.length == 22 && gpon_password.substring(0,2) === '0x') {  
+                    gpon_password = gpon_password.substring(3);
+                }
+                if(gpon_password.length == 20) {  
+                    var hex = base64ToHex(sfp_a2_info_arr[5]);
+                    hex = hex.substring(0,22) + gpon_password + hex.substring(42);
+                    sfp_a2_info_arr[5] = hexToBase64(hex);
+                }
+            }
+            var mac_addr = fomrdata.get('mac-addr');
+            if(mac_addr.length == 17) {
+                mac_addr = mac_addr.replace('-','');
+                mac_addr = mac_addr.replace(':','');
+            }
+            if(mac_addr.length == 12) {
+                var hex = base64ToHex(sfp_a2_info_arr[9]);
+                hex = hex.substring(0,48) + mac_addr + hex.substring(61);
+                sfp_a2_info_arr[9] = hexToBase64(hex);
+            }
+            document.getElementById('result').value =  sfp_a2_info_arr.join('@');       
+        } else {
+            document.getElementById('result').value = 'sfp_a2_info variable in wrong format!';
+        }
+    });
+    function hexToBase64(hexStr) {
+        return btoa([...hexStr].reduce((acc, _, i) => acc += !(i - 1 & 1) ? String.fromCharCode(parseInt(hexStr.substring(i - 1, i + 1), 16)) : '', ''));
+    }
+    function base64ToHex(base64Value) {
+        return [...atob(base64Value)].map(c=> c.charCodeAt(0).toString(16).padStart(2,0)).join('');
+    }
+</script>
+
+{:style="counter-reset:none"}
+2. Transfer modified file back into variable `sfp_a2_info`, replace `<output>` with the output of web form.
+
+```shell
+fw_setenv sfp_a2_info "<output>"
+```
+
+## Temporary file procedure
+
+1. Save `sfp_a2_info` in into temporary file
+
+```shell
+fw_printenv sfp_a2_info | sed "s/^sfp_a2_info=//" > /tmp/sfp_a2.txt
+```
+And print a pretty version:
+```shell
+fw_printenv sfp_a2_info | sed "s/^sfp_a2_info=//" | tr '@' '\n'
+```
+
+2. Setting S/N
+
+The S/N is stored on the 6th line, for sample `4857544311223344` (where `48575443` are hex encoding of `HWTC`) are stored:
+```
+AAAAAAAAAAJIV1RDESIzRP///////////////////wAAAAAAAAAAAAAAAAAA
+00000000000000024857544311223344ffffffffffffffffffffffffffffff0000000000000000000000000000
+```
+
+The entire S/N, including the PON ID, is encoded first in hex and then in base64
+
+3. Setting Ploam Password
+
+The Ploam Password is stored on the 5th line, for sample (`1234567890`) are stored:
+```
+ffffffffffffffff00021437d77db7df7e37e77eb7ef7f37f77d00000000000000000000000000000000000000
+//////////8AAhQ31323334353637383930AAAAAAAAAAAAAAAAAAAAAAAAA
+```
+
+The entire Ploam, is encoded first in hex and then in base64
+
+4. Setting MAC Address
+
+The Ploam Password is stored on the 9th line, for sample (`48:57:02:da:be:ef`) are stored:
+```
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAASFcC2r7vAAAAAAAAAAAAAAAAAAAA
+000000000000000000000000000000000000000000000000485702dabeef000000000000000000000000000000
+```
+
+5. Transfer modified file back into variable `sfp_a2_info`
+
+```shell
+fw_setenv sfp_a2_info $(cat /tmp/sfp_a2.txt)
+```
+
+## Review and testing
+
+After reboot I check for new variables:
+
+```shell
+fw_printenv nPassword
+fw_printenv gSerial
+fw_printenv ethaddr
+```
+
+After reboot I check for new variables:
+
+## Check registration status for O5 (successful)
+
+```shell
+onu ploamsg
+```
 
 # Disable dying gasp
 
-```sh
-# fw_setenv nDyingGaspEnable 0 
-```
\ No newline at end of file
+```shell
+fw_setenv nDyingGaspEnable 0 
+```
+
+# Miscellaneous Links
+
+- [Edit sfp_a2_info file](https://forum.openwrt.org/t/support-ma5671a-sfp-gpon/48042/25)