1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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
usage(char * name,int ecode)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
version(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
get_arg(const char * arg,const char * option,const char ** value_p)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
main(int argc,char * argv[])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