[OE-core] [PATCH] extrausers: Use static ids when available

[David Vincent]

When creating users at the image level using extrausers class, the
current behavior is to ignore the status of USERADDEXTENSION. This could
lead to undefined behavior when static ids are expected but the system
falls back to dynamic ones.

Signed-off-by: David Vincent <freesilicon at gmail.com>
---
 meta/classes/extrausers.bbclass        |  4 ++++
 meta/classes/useradd-staticids.bbclass | 37 ++++++++++++++++++++++++++++------
 2 files changed, 35 insertions(+), 6 deletions(-)

diff --git a/meta/classes/extrausers.bbclass b/meta/classes/extrausers.bbclass
index 402fc7d808..7709407b69 100644
--- a/meta/classes/extrausers.bbclass
+++ b/meta/classes/extrausers.bbclass
@@ -63,3 +63,7 @@ set_user_group () {
 		remaining=`echo $remaining | cut -d ';' -f2-`
 	done
 }
+
+USERADDEXTENSION ?= ""
+
+inherit ${USERADDEXTENSION}
diff --git a/meta/classes/useradd-staticids.bbclass b/meta/classes/useradd-staticids.bbclass
index 94bcbaa3d7..f7f6057ac3 100644
--- a/meta/classes/useradd-staticids.bbclass
+++ b/meta/classes/useradd-staticids.bbclass
@@ -58,7 +58,7 @@ def update_useradd_static_config(d):
             bb.warn("%s - %s: %sname %s does not have a static ID defined." % (d.getVar('PN'), pkg, type, id))
 
     # We parse and rewrite the useradd components
-    def rewrite_useradd(params):
+    def rewrite_useradd(params, is_pkg):
         # The following comes from --help on useradd from shadow
         parser = myArgumentParser(prog='useradd')
         parser.add_argument("-b", "--base-dir", metavar="BASE_DIR", help="base directory for the home directory of the new account")
@@ -162,7 +162,7 @@ def update_useradd_static_config(d):
 
                 uaargs.gid = uaargs.groupid
                 uaargs.user_group = None
-                if newgroup:
+                if newgroup and is_pkg:
                     groupadd = d.getVar("GROUPADD_PARAM_%s" % pkg)
                     if groupadd:
                         d.setVar("GROUPADD_PARAM_%s" % pkg, "%s; %s" % (groupadd, newgroup))
@@ -206,7 +206,7 @@ def update_useradd_static_config(d):
         return ";".join(newparams).strip()
 
     # We parse and rewrite the groupadd components
-    def rewrite_groupadd(params):
+    def rewrite_groupadd(params, is_pkg):
         # The following comes from --help on groupadd from shadow
         parser = myArgumentParser(prog='groupadd')
         parser.add_argument("-f", "--force", help="exit successfully if the group already exists, and cancel -g if the GID is already used", action="store_true")
@@ -298,7 +298,7 @@ def update_useradd_static_config(d):
             bb.parse.mark_dependency(d, bb.utils.which(bbpath, conf_file))
 
     # Load and process the users and groups, rewriting the adduser/addgroup params
-    useradd_packages = d.getVar('USERADD_PACKAGES')
+    useradd_packages = d.getVar('USERADD_PACKAGES') or ""
 
     for pkg in useradd_packages.split():
         # Groupmems doesn't have anything we might want to change, so simply validating
@@ -306,15 +306,40 @@ def update_useradd_static_config(d):
         useradd_param = d.getVar('USERADD_PARAM_%s' % pkg)
         if useradd_param:
             #bb.warn("Before: 'USERADD_PARAM_%s' - '%s'" % (pkg, useradd_param))
-            d.setVar('USERADD_PARAM_%s' % pkg, rewrite_useradd(useradd_param))
+            d.setVar('USERADD_PARAM_%s' % pkg, rewrite_useradd(useradd_param, True))
             #bb.warn("After:  'USERADD_PARAM_%s' - '%s'" % (pkg, d.getVar('USERADD_PARAM_%s' % pkg)))
 
         groupadd_param = d.getVar('GROUPADD_PARAM_%s' % pkg)
         if groupadd_param:
             #bb.warn("Before: 'GROUPADD_PARAM_%s' - '%s'" % (pkg, groupadd_param))
-            d.setVar('GROUPADD_PARAM_%s' % pkg, rewrite_groupadd(groupadd_param))
+            d.setVar('GROUPADD_PARAM_%s' % pkg, rewrite_groupadd(groupadd_param, True))
             #bb.warn("After:  'GROUPADD_PARAM_%s' - '%s'" % (pkg, d.getVar('GROUPADD_PARAM_%s' % pkg)))
 
+    # Load and process extra users and groups, rewriting only adduser/addgroup params
+    pkg = d.getVar('PN')
+    extrausers = d.getVar('EXTRA_USERS_PARAMS') or ""
+
+    #bb.warn("Before:  'EXTRA_USERS_PARAMS' - '%s'" % (d.getVar('EXTRA_USERS_PARAMS')))
+    new_extrausers = []
+    for cmd in re.split('''[ \t]*;[ \t]*(?=(?:[^'"]|'[^']*'|"[^"]*")*$)''', extrausers):
+        cmd = cmd.strip()
+        if not cmd:
+            continue
+
+        if re.match('''useradd (.*)''', cmd):
+            useradd_param = re.match('''useradd (.*)''', cmd).group(1)
+            useradd_param = rewrite_useradd(useradd_param, False)
+            cmd = 'useradd %s' % useradd_param
+        elif re.match('''groupadd (.*)''', cmd):
+            groupadd_param = re.match('''groupadd (.*)''', cmd).group(1)
+            groupadd_param = rewrite_groupadd(groupadd_param, False)
+            cmd = 'groupadd %s' % groupadd_param
+
+        new_extrausers.append(cmd)
+
+    new_extrausers.append('')
+    d.setVar('EXTRA_USERS_PARAMS', ';'.join(new_extrausers))
+    #bb.warn("After:  'EXTRA_USERS_PARAMS' - '%s'" % (d.getVar('EXTRA_USERS_PARAMS')))
 
 
 python __anonymous() {
-- 
2.11.0