From 5780fdaca5a2cd49c8218aec48cb6647374089ec Mon Sep 17 00:00:00 2001
From: kx <kx@radix.pro>
Date: Wed, 28 Sep 2022 17:07:19 +0300
Subject: users list command implementation

---
 src/users.c | 196 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 196 insertions(+)
 create mode 100644 src/users.c

(limited to 'src/users.c')

diff --git a/src/users.c b/src/users.c
new file mode 100644
index 0000000..292f9ad
--- /dev/null
+++ b/src/users.c
@@ -0,0 +1,196 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+#include <limits.h>
+#include <unistd.h>
+#include <time.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+#include <main.h>
+#include <commands.h>
+#include <completion.h>
+#include <utils.h>
+
+#include <shell.h>
+#include <users.h>
+
+/* **************************************************************** */
+/*                                                                  */
+/*                       SILA Users Commands                        */
+/*                                                                  */
+/* **************************************************************** */
+
+/* String to pass to system ().  This is for the LIST, VIEW and RENAME
+   commands. */
+static char syscom[PATH_MAX];
+
+static int argc;
+static char args[PATH_MAX];
+static const char *argv[PATH_MAX];
+
+void split_args( const char *name, char *arg )
+{
+  char *p = NULL;
+  bzero( &args[0], PATH_MAX );
+  bzero( (void *)argv, sizeof( argv ) );
+  argv[0] = name;
+  argc = 1;
+
+  if( !arg )
+  {
+    return;
+  }
+
+  strncpy( args, arg, PATH_MAX - 1 );
+  p = &args[0];
+  while( *p )
+  {
+    while( *p && (*p == '\t' || *p == ' ') )
+      ++p;
+
+    if( *p )
+    {
+      argv[argc] = p;
+      while( *p && *p != '\t' && *p != ' ' )
+        ++p;
+      *p = '\0';
+      ++p;
+
+      ++argc;
+    }
+  }
+}
+
+int com_useradd( char *arg )
+{
+  /* temporary STUB. Should use busctl or REST */
+  if( !valid_argument( "useradd", arg ) )
+    return( 1 );
+
+  sprintf (syscom, "useradd %s", arg);
+  return( system( syscom ) );
+}
+
+int com_userdel( char *arg )
+{
+  /* temporary STUB. Should use busctl or REST */
+  if( !valid_argument( "userdel", arg ) )
+    return( 1 );
+
+  sprintf( syscom, "userdel %s", arg );
+  return( system( syscom ) );
+}
+
+
+
+/***************************************************************
+  Users list functions:
+ ***************************************************************/
+
+/* Options: */
+static int userlist_opt_help = 0;
+
+static void userlist_usage( char *fname )
+{
+  fprintf( stdout, "\n" );
+  fprintf( stdout, "Usage: %s [options]\n", fname );
+  fprintf( stdout, "\n" );
+  fprintf( stdout, "List users.\n" );
+  fprintf( stdout, "\n" );
+  fprintf( stdout, "Options:\n" );
+  fprintf( stdout, "  -h,--help    Display this information.\n" );
+  fprintf( stdout, "\n" );
+}
+
+
+void userlist_get_args( int argc, char * const *argv )
+{
+  const char* short_options = "h";
+
+  const struct option long_options[] =
+  {
+    { "help",        no_argument,       NULL, 'h' },
+    { NULL,          0,                 NULL,  0  }
+  };
+
+  int ret;
+  int option_index = 0;
+
+  /* Reset options: */
+  userlist_opt_help = 0;
+
+  while( (ret = getopt_long( argc, argv, short_options, long_options, &option_index )) != -1 )
+  {
+    switch( ret )
+    {
+      case 'h':
+      {
+        userlist_opt_help = 1;
+        break;
+      }
+      case '?': default:
+      {
+        userlist_opt_help = 1;
+        break;
+      }
+    }
+  }
+
+  if( optind < argc )
+  {
+    userlist_opt_help = 1;
+  }
+
+  /* This is important for call getopt_long() several times! */
+  optind = 0;
+}
+
+
+
+int com_userlist( char *arg )
+{
+  split_args( "list", arg );
+
+/* test:
+  printf( "argc: %d\n", argc );
+  if( argc > 0 )
+  {
+    int i = 0;
+    while( i < argc )
+    {
+      printf( "arg[%d] = '%s';\n", i, argv[i] );
+      ++i;
+    }
+  }
+ */
+
+  userlist_get_args( argc, (char * const *)&argv[0] );
+
+  if( userlist_opt_help )
+  {
+    userlist_usage( "list" );
+  }
+  else
+  {
+    /*
+      list command:
+     */
+    sprintf( syscom, "busctl --list tree %s | grep %s/ | sed 's,%s/,  ,'",
+                                         USERS_DBUS_SERVICE,
+                                                   USERS_DBUS_ROOT_PATH,
+                                                                USERS_DBUS_ROOT_PATH );
+    return( system( syscom ) );
+  }
+
+  return( 0 );
+}
-- 
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