From ed02760159a4a777ed0e1b617dafddbc9c62f5a1 Mon Sep 17 00:00:00 2001
From: kx <kx@radix.pro>
Date: Thu, 29 Sep 2022 01:46:11 +0300
Subject: users: passwd

---
 src/users.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 57 insertions(+), 6 deletions(-)

(limited to 'src/users.c')

diff --git a/src/users.c b/src/users.c
index 338834f..b0f767c 100644
--- a/src/users.c
+++ b/src/users.c
@@ -24,6 +24,10 @@
 #include <shell.h>
 #include <users.h>
 
+
+char user_name[USER_NAME_SIZE];
+char user_role[USER_ROLE_SIZE];
+
 /* **************************************************************** */
 /*                                                                  */
 /*                       SILA Users Commands                        */
@@ -39,9 +43,6 @@ static char args[PATH_MAX];
 static const char *argv[PATH_MAX];
 
 /* Options: */
-#define USER_NAME_SIZE  64
-#define USER_ROLE_SIZE  16
-
 static int  opt_help = 0;
 static char opt_name[USER_NAME_SIZE];
 static char opt_role[USER_ROLE_SIZE];
@@ -132,9 +133,12 @@ void get_args( int argc, char * const *argv )
     }
   }
 
+  /*
+    Assume that the last argument is a user name:
+   */
   if( optind < argc )
   {
-    opt_help = 1;
+    strncpy( opt_name, (const char *)argv[optind++], sizeof( opt_name ) - 1 );
   }
 
   /* This is important for call getopt_long() several times! */
@@ -146,17 +150,64 @@ void get_args( int argc, char * const *argv )
   Users management commands:
  ***************************************************************/
 
+static void passwd_usage( char *fname )
+{
+  fprintf( stdout, "\n" );
+  fprintf( stdout, "Usage: %s [username]\n", fname );
+  fprintf( stdout, "\n" );
+  fprintf( stdout, "Set or change user password.\n" );
+  fprintf( stdout, "\n" );
+  fprintf( stdout, "Options:\n" );
+  fprintf( stdout, "  -h,--help    Display this information.\n" );
+  fprintf( stdout, "\n" );
+  fprintf( stdout, "Parameter:\n" );
+  fprintf( stdout, "  [username]   User name (default: %s).\n", user_name );
+  fprintf( stdout, "\n" );
+}
+
+int com_passwd( char *arg )
+{
+  split_args( "passwd", arg );
+
+  get_args( argc, (char * const *)&argv[0] );
+
+  if( opt_help )
+  {
+    passwd_usage( "passwd" );
+  }
+  else
+  {
+    /* check args */
+    if( !opt_name[0] )
+    {
+      sprintf( syscom, "passwd %s", user_name );
+    }
+    else
+    {
+      if( !strncmp( user_role, ROLE_ADMIN, sizeof( ROLE_ADMIN ) ) )
+        sprintf( syscom, "passwd %s", opt_name );
+      else
+        sprintf( syscom, "echo \"Only users with role='%s' can change other user's password\"", ROLE_ADMIN );
+    }
+
+    return( system( syscom ) );
+  }
+
+  return( 0 );
+}
+
+
 static void useradd_usage( char *fname )
 {
   fprintf( stdout, "\n" );
-  fprintf( stdout, "Usage: %s [options]\n", fname );
+  fprintf( stdout, "Usage: %s [options] [user name]\n", fname );
   fprintf( stdout, "\n" );
   fprintf( stdout, "Delete user.\n" );
   fprintf( stdout, "\n" );
   fprintf( stdout, "Options:\n" );
   fprintf( stdout, "  -h,--help    Display this information.\n" );
   fprintf( stdout, "  -n,--name    User Name.\n" );
-  fprintf( stdout, "  -r,--role    User Role (default: %s.\n", ROLE_USER );
+  fprintf( stdout, "  -r,--role    User Role (default: %s).\n", ROLE_USER );
   fprintf( stdout, "\n" );
 }
 
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