1 /* -*- mode: C; c-file-style: "gnu" -*- */ 2 /* dbus-uuidgen.c Utility program to create UUIDs 3 * 4 * Copyright (C) 2006 Red Hat, Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 */ 21 22 #include <config.h> 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <string.h> 26 27 #include <dbus/dbus-uuidgen.h> 28 #include <dbus/dbus.h> 29 30 static void 31 usage (char *name, int ecode) 32 { 33 if (name == NULL) 34 name = "dbus-uuidgen"; 35 36 fprintf (stderr, "Usage: %s [--ensure[=FILENAME]] [--get[=FILENAME]]\n", name); 37 exit (ecode); 38 } 39 40 static void 41 version (void) 42 { 43 printf ("D-Bus UUID Generator %s\n" 44 "Copyright (C) 2006 Red Hat, Inc.\n" 45 "This is free software; see the source for copying conditions.\n" 46 "There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n", 47 VERSION); 48 exit (0); 49 } 50 51 static dbus_bool_t 52 get_arg (const char *arg, 53 const char *option, 54 const char **value_p) 55 { 56 const char *fn; 57 58 if (strlen(arg) < strlen(option)) 59 return FALSE; 60 61 fn = arg + strlen(option); 62 63 if (!(*fn == '=' || *fn == ' ' || *fn == '\0')) 64 { 65 usage (NULL, 1); 66 } 67 68 if (*fn == '=') 69 ++fn; 70 71 while (*fn == ' ' && *fn != '\0') 72 ++fn; 73 74 if (*fn != '\0') 75 { 76 *value_p = fn; 77 return TRUE; 78 } 79 80 return FALSE; 81 } 82 83 int 84 main (int argc, char *argv[]) 85 { 86 int i; 87 const char *filename; 88 dbus_bool_t ensure_uuid; 89 dbus_bool_t get_uuid; 90 DBusError error; 91 92 ensure_uuid = FALSE; 93 get_uuid = FALSE; 94 95 filename = NULL; 96 97 for (i = 1; i < argc; i++) 98 { 99 char *arg = argv[i]; 100 101 if (strncmp (arg, "--ensure", strlen("--ensure")) == 0) 102 { 103 get_arg (arg, "--ensure", &filename); 104 ensure_uuid = TRUE; 105 } 106 else if (strncmp (arg, "--get", strlen("--get")) == 0) 107 { 108 get_arg (arg, "--get", &filename); 109 get_uuid = TRUE; 110 } 111 else if (strcmp (arg, "--help") == 0) 112 usage (argv[0], 0); 113 else if (strcmp (arg, "--version") == 0) 114 version (); 115 else 116 usage (argv[0], 1); 117 } 118 119 if (get_uuid && ensure_uuid) 120 { 121 fprintf (stderr, "Can't specify both --get and --ensure\n"); 122 exit (1); 123 } 124 125 dbus_error_init (&error); 126 127 if (get_uuid || ensure_uuid) 128 { 129 char *uuid; 130 if (dbus_internal_do_not_use_get_uuid (filename, &uuid, ensure_uuid, &error)) 131 { 132 if (get_uuid) /* print nothing on --ensure */ 133 printf ("%s\n", uuid); 134 dbus_free (uuid); 135 } 136 } 137 else 138 { 139 char *uuid; 140 if (dbus_internal_do_not_use_create_uuid (&uuid)) 141 { 142 printf ("%s\n", uuid); 143 dbus_free (uuid); 144 } 145 else 146 { 147 dbus_set_error (&error, DBUS_ERROR_NO_MEMORY, "No memory"); 148 } 149 } 150 151 if (dbus_error_is_set (&error)) 152 { 153 fprintf (stderr, "%s\n", error.message); 154 dbus_error_free (&error); 155 exit (1); 156 } 157 else 158 { 159 exit (0); 160 } 161 } 162
