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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
Sections of this were taken/modified from mod_auth_path for Apache
@TODO: License?
*/
#include "config.h"
#include <security/pam_appl.h>
#if !defined(__sun) && !defined(__FreeBSD__)
#include <security/pam_misc.h>
#endif
#include "drizzled/security_context.h"
#include "drizzled/plugin/authentication.h"
using namespace drizzled;
typedef struct {
const char *name;
const char *password;
} auth_pam_userinfo;
extern "C"
int auth_pam_talker(int num_msg,
#ifdef __sun
struct pam_message **msg,
#else
const struct pam_message **msg,
#endif
struct pam_response **resp,
void *appdata_ptr);
int auth_pam_talker(int num_msg,
#ifdef __sun
struct pam_message **msg,
#else
const struct pam_message **msg,
#endif
struct pam_response **resp,
void *appdata_ptr)
{
auth_pam_userinfo *userinfo = (auth_pam_userinfo*)appdata_ptr;
struct pam_response *response = 0;
int x;
/* parameter sanity checking */
if(!resp || !msg || !userinfo)
return PAM_CONV_ERR;
/* allocate memory to store response */
response= (struct pam_response*)malloc(num_msg * sizeof(struct pam_response));
if(!response)
return PAM_CONV_ERR;
/* copy values */
for(x= 0; x < num_msg; x++)
{
/* initialize to safe values */
response[x].resp_retcode= 0;
response[x].resp= 0;
/* select response based on requested output style */
switch(msg[x]->msg_style)
{
case PAM_PROMPT_ECHO_ON:
/* on memory allocation failure, auth fails */
response[x].resp = strdup(userinfo->name);
break;
case PAM_PROMPT_ECHO_OFF:
response[x].resp = strdup(userinfo->password);
break;
default:
if(response)
free(response);
return PAM_CONV_ERR;
}
}
/* everything okay, set PAM response values */
*resp = response;
return PAM_SUCCESS;
}
class Auth_pam : public drizzled::plugin::Authentication
{
public:
Auth_pam(std::string name_arg)
: drizzled::plugin::Authentication(name_arg) {}
virtual bool authenticate(const SecurityContext &sctx,
const std::string &password)
{
int retval;
auth_pam_userinfo userinfo= { NULL, NULL };
struct pam_conv conv_info= { &auth_pam_talker, (void*)&userinfo };
pam_handle_t *pamh= NULL;
userinfo.name= sctx.getUser().c_str();
userinfo.password= password.c_str();
retval= pam_start("check_user", userinfo.name, &conv_info, &pamh);
if (retval == PAM_SUCCESS)
retval= pam_authenticate(pamh, PAM_DISALLOW_NULL_AUTHTOK);
if (retval == PAM_SUCCESS)
retval= pam_acct_mgmt(pamh, PAM_DISALLOW_NULL_AUTHTOK);
pam_end(pamh, retval);
return (retval == PAM_SUCCESS) ? true: false;
}
};
static Auth_pam *auth= NULL;
static int initialize(drizzled::plugin::Registry ®istry)
{
auth= new Auth_pam("auth_pam");
registry.add(auth);
return 0;
}
static int finalize(drizzled::plugin::Registry ®istry)
{
if (auth)
{
registry.remove(auth);
delete auth;
}
return 0;
}
DRIZZLE_DECLARE_PLUGIN
{
DRIZZLE_VERSION_ID,
"pam",
"0.1",
"Brian Aker",
"PAM based authenication.",
PLUGIN_LICENSE_GPL,
initialize, /* Plugin Init */
finalize, /* Plugin Deinit */
NULL, /* system variables */
NULL /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
|