1 /* GNU Mailutils -- a suite of utilities for electronic mail
2 Copyright (C) 1999-2021 Free Software Foundation, Inc.
3
4 GNU Mailutils is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3, or (at your option)
7 any later version.
8
9 GNU Mailutils is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
16
17 #include "mail.h"
18 #include <pwd.h>
19
20 static mu_list_t alternate_names = NULL;
21 static char *my_email;
22 static char *my_name;
23
24 /*
25 * alt[ernates] name...
26 */
27
28 int
mail_alt(int argc,char ** argv)29 mail_alt (int argc, char **argv)
30 {
31 if (argc == 1)
32 {
33 if (alternate_names)
34 {
35 util_slist_print (alternate_names, 0);
36 mu_printf ("\n");
37 }
38 }
39 else
40 {
41 util_slist_destroy (&alternate_names);
42 while (--argc)
43 util_slist_add (&alternate_names, *++argv);
44 }
45 return 0;
46 }
47
48 char *
mail_whoami()49 mail_whoami ()
50 {
51 return my_name;
52 }
53
54 void
mail_set_my_name(char * name)55 mail_set_my_name (char *name)
56 {
57 if (!name)
58 {
59 struct passwd *pw = getpwuid (getuid ());
60 if (!pw)
61 {
62 mu_error (_("Cannot determine my username"));
63 exit (1);
64 }
65 name = pw->pw_name;
66 }
67 my_name = mu_strdup (name);
68 my_email = mu_get_user_email (name);
69 if (!my_email)
70 {
71 mu_error(_("Cannot determine my email address: %s"),
72 mu_strerror (errno));
73 exit (1);
74 }
75 }
76
77 int
mail_is_my_name(const char * name)78 mail_is_my_name (const char *name)
79 {
80 if (strchr(name, '@') == NULL && mu_c_strcasecmp (name, my_name) == 0)
81 return 1;
82 if (mu_c_strcasecmp (name, my_email) == 0)
83 return 1;
84 return util_slist_lookup (alternate_names, name);
85 }
86