1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* alias-wrapper.c --- wrapper to allow the mailman user to modify the aliases
* database.
*
* Copyright (C) 1998,1999,2000 by the Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
/* passed in from configure script */
const int LEGAL_PARENT_UID = ALIAS_UID; /* mailman's UID */
const int LEGAL_PARENT_GID = ALIAS_GID; /* mail's GID */
const char* SENDMAIL_CMD = "/usr/sbin/sendmail";
const char* ALIAS_FILE = "/etc/aliases";
const char* WRAPPER = "/home/mailman/mailman/mail/wrapper";
/*
** is the parent process allowed to call us?
*/
int
LegalCaller()
{
/* compare to our parent's uid */
if (LEGAL_PARENT_UID != getuid()) {
printf("GOT UID %d.\n", getuid());
return 0;
}
if (LEGAL_PARENT_GID != getgid()) {
printf("GOT GID %d.\n", getgid());
return 0;
}
return 1;
}
void
AddListAliases(char *list)
{
FILE *f;
int err = 0;
f = fopen(ALIAS_FILE ,"a+");
if (f == NULL) {
err = 1;
f = stderr;
fprintf(f, "\n\n***********ERROR!!!!***********\n");
fprintf(f, "Could not write to the /etc/aliases file.\n");
fprintf(f, "Please become root, add the lines below to\n");
fprintf(f, "that file, and then run the command:\n");
fprintf(f, "%s -bi\n", SENDMAIL_CMD);
}
fprintf(f, "\n\n#-- %s -- mailing list aliases:\n", list);
fprintf(f, "%s: \t|\"%s post %s\"\n", list, WRAPPER, list);
fprintf(f, "%s-admin: \t|\"%s mailowner %s\"\n", list, WRAPPER, list);
fprintf(f, "%s-request: \t|\"%s mailcmd %s\"\n", list, WRAPPER, list);
fprintf(f, "# I think we don't want this one...\n");
fprintf(f, "it'll change the unix from line...\n");
fprintf(f, "#owner-%s: \t%s-admin\n", list, list);
fprintf(f, "#%s-owner: \t%s-admin\n", list, list);
fprintf(f, "\n");
fclose(f);
if (!err) {
printf("Rebuilding alias database...\n");
execlp(SENDMAIL_CMD, SENDMAIL_CMD, "-bi");
}
}
int
main(int argc, char **argv, char **env)
{
char *command;
int i;
if (argc != 2) {
printf("Usage: %s [list-name]\n", argv[0]);
exit(0);
}
if (LegalCaller()) {
setuid(geteuid());
AddListAliases(argv[1]);
}
else {
printf("Illegal caller!\n");
return 1;
}
return 0;
}
/*
* Local Variables:
* c-file-style: "python"
* End:
*/
|
