T5688: Fixed ip pool migration scripts for l2tp, sstp, pppoe

Fixed migration 'subnet' option in l2tp, sstp, pppoe.
'subnet' option can contain several values.

(cherry picked from commit 21e5db430f93fd48ebc598ddf95c67d77485f5f5)

3 files changed, 46 insertions, 14 deletions

diff --git a/src/migration-scripts/l2tp/4-to-5 b/src/migration-scripts/l2tp/4-to-5
index fe8ab357e..496dc83d6 100755
--- a/src/migration-scripts/l2tp/4-to-5
+++ b/src/migration-scripts/l2tp/4-to-5
@@ -45,12 +45,22 @@ if not config.exists(pool_base):
     exit(0)
 default_pool = ''
 range_pool_name = 'default-range-pool'
-subnet_pool_name = 'default-subnet-pool'
+subnet_base_name = 'default-subnet-pool'
+number = 1
+subnet_pool_name = f'{subnet_base_name}-{number}'
+prev_subnet_pool = subnet_pool_name
 if config.exists(pool_base + ['subnet']):
-    subnet = config.return_value(pool_base + ['subnet'])
-    config.delete(pool_base + ['subnet'])
-    config.set(pool_base + [subnet_pool_name, 'range'], value=subnet)
     default_pool = subnet_pool_name
+    for subnet in config.return_values(pool_base + ['subnet']):
+        config.set(pool_base + [subnet_pool_name, 'range'], value=subnet)
+        if prev_subnet_pool != subnet_pool_name:
+            config.set(pool_base + [prev_subnet_pool, 'next-pool'],
+                       value=subnet_pool_name)
+            prev_subnet_pool = subnet_pool_name
+        number += 1
+        subnet_pool_name = f'{subnet_base_name}-{number}'
+
+    config.delete(pool_base + ['subnet'])
 
 if config.exists(pool_base + ['start']) and config.exists(pool_base + ['stop']):
     start_ip = config.return_value(pool_base + ['start'])
@@ -61,7 +71,7 @@ if config.exists(pool_base + ['start']) and config.exists(pool_base + ['stop']):
     config.set(pool_base + [range_pool_name, 'range'], value=ip_range)
     if default_pool:
         config.set(pool_base + [range_pool_name, 'next-pool'],
-                   value=subnet_pool_name)
+                   value=default_pool)
     default_pool = range_pool_name
 
 if default_pool:
diff --git a/src/migration-scripts/pppoe-server/6-to-7 b/src/migration-scripts/pppoe-server/6-to-7
index 34996d8fe..d856c1f34 100755
--- a/src/migration-scripts/pppoe-server/6-to-7
+++ b/src/migration-scripts/pppoe-server/6-to-7
@@ -50,13 +50,24 @@ if not config.exists(pool_base):
     exit(0)
 default_pool = ''
 range_pool_name = 'default-range-pool'
-subnet_pool_name = 'default-subnet-pool'
+
+subnet_base_name = 'default-subnet-pool'
+number = 1
+subnet_pool_name = f'{subnet_base_name}-{number}'
+prev_subnet_pool = subnet_pool_name
 #Default nameless pools migrations
 if config.exists(pool_base + ['subnet']):
-    subnet = config.return_value(pool_base + ['subnet'])
-    config.delete(pool_base + ['subnet'])
-    config.set(pool_base + [subnet_pool_name, 'range'], value=subnet)
     default_pool = subnet_pool_name
+    for subnet in config.return_values(pool_base + ['subnet']):
+        config.set(pool_base + [subnet_pool_name, 'range'], value=subnet)
+        if prev_subnet_pool != subnet_pool_name:
+            config.set(pool_base + [prev_subnet_pool, 'next-pool'],
+                       value=subnet_pool_name)
+            prev_subnet_pool = subnet_pool_name
+        number += 1
+        subnet_pool_name = f'{subnet_base_name}-{number}'
+
+    config.delete(pool_base + ['subnet'])
 
 if config.exists(pool_base + ['start']) and config.exists(pool_base + ['stop']):
     start_ip = config.return_value(pool_base + ['start'])
@@ -67,7 +78,7 @@ if config.exists(pool_base + ['start']) and config.exists(pool_base + ['stop']):
     config.set(pool_base + [range_pool_name, 'range'], value=ip_range)
     if default_pool:
         config.set(pool_base + [range_pool_name, 'next-pool'],
-                   value=subnet_pool_name)
+                   value=default_pool)
     default_pool = range_pool_name
 
 gateway = ''
diff --git a/src/migration-scripts/sstp/4-to-5 b/src/migration-scripts/sstp/4-to-5
index 0f332e04f..3a86c79ec 100755
--- a/src/migration-scripts/sstp/4-to-5
+++ b/src/migration-scripts/sstp/4-to-5
@@ -43,12 +43,23 @@ if not config.exists(base):
 if not config.exists(pool_base):
     exit(0)
 
-subnet_pool_name = 'default-subnet-pool'
+subnet_base_name = 'default-subnet-pool'
+number = 1
+subnet_pool_name = f'{subnet_base_name}-{number}'
+prev_subnet_pool = subnet_pool_name
 if config.exists(pool_base + ['subnet']):
-    subnet = config.return_value(pool_base + ['subnet'])
+    default_pool = subnet_pool_name
+    for subnet in config.return_values(pool_base + ['subnet']):
+        config.set(pool_base + [subnet_pool_name, 'range'], value=subnet)
+        if prev_subnet_pool != subnet_pool_name:
+            config.set(pool_base + [prev_subnet_pool, 'next-pool'],
+                       value=subnet_pool_name)
+            prev_subnet_pool = subnet_pool_name
+        number += 1
+        subnet_pool_name = f'{subnet_base_name}-{number}'
+
     config.delete(pool_base + ['subnet'])
-    config.set(pool_base + [subnet_pool_name, 'range'], value=subnet)
-    config.set(base + ['default-pool'], value=subnet_pool_name)
+    config.set(base + ['default-pool'], value=default_pool)
 # format as tag node
 config.set_tag(pool_base)