annotate svr-authpam.c @ 1760:2406a9987810 default tip fuzz

Add first try at fuzzing custom mutator
author Matt Johnston <matt@ucc.asn.au>
date Sun, 25 Oct 2020 22:52:36 +0800
parents 258b57b208ae
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 /*
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
2 * Dropbear SSH
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 *
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
4 * Copyright (c) 2004 Martin Carlsson
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
5 * Portions (c) 2004 Matt Johnston
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
6 * All rights reserved.
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
7 *
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 * of this software and associated documentation files (the "Software"), to deal
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10 * in the Software without restriction, including without limitation the rights
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12 * copies of the Software, and to permit persons to whom the Software is
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 * furnished to do so, subject to the following conditions:
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 *
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15 * The above copyright notice and this permission notice shall be included in
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 * all copies or substantial portions of the Software.
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17 *
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
24 * SOFTWARE. */
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
26 /* Validates a user password using PAM */
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 #include "includes.h"
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 #include "session.h"
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 #include "buffer.h"
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31 #include "dbutil.h"
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32 #include "auth.h"
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1238
diff changeset
34 #if DROPBEAR_SVR_PAM_AUTH
432
517e76bdfb2d Make sure the #includes for pam only get hit if PAM is enabled.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
35
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
36 #if defined(HAVE_SECURITY_PAM_APPL_H)
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 #include <security/pam_appl.h>
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
38 #elif defined (HAVE_PAM_PAM_APPL_H)
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39 #include <pam/pam_appl.h>
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40 #endif
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
42 struct UserDataS {
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
43 char* user;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
44 char* passwd;
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
45 };
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
46
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
47 /* PAM conversation function - for now we only handle one message */
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
48 int
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49 pamConvFunc(int num_msg,
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
50 const struct pam_message **msg,
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
51 struct pam_response **respp,
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
52 void *appdata_ptr) {
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
54 int rc = PAM_SUCCESS;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
55 struct pam_response* resp = NULL;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
56 struct UserDataS* userDatap = (struct UserDataS*) appdata_ptr;
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
57 unsigned int msg_len = 0;
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
58 unsigned int i = 0;
660
a842469ce8ad - Fix minor leak
Matt Johnston <matt@ucc.asn.au>
parents: 594
diff changeset
59 char * compare_message = NULL;
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
60
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
61 TRACE(("enter pamConvFunc"))
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
62
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
63 if (num_msg != 1) {
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
64 /* If you're getting here - Dropbear probably can't support your pam
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
65 * modules. This whole file is a bit of a hack around lack of
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
66 * asynchronocity in PAM anyway. */
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
67 dropbear_log(LOG_INFO, "pamConvFunc() called with >1 messages: not supported.");
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
68 return PAM_CONV_ERR;
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
69 }
660
a842469ce8ad - Fix minor leak
Matt Johnston <matt@ucc.asn.au>
parents: 594
diff changeset
70
a842469ce8ad - Fix minor leak
Matt Johnston <matt@ucc.asn.au>
parents: 594
diff changeset
71 /* make a copy we can strip */
a842469ce8ad - Fix minor leak
Matt Johnston <matt@ucc.asn.au>
parents: 594
diff changeset
72 compare_message = m_strdup((*msg)->msg);
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
73
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 226
diff changeset
74 /* Make the string lowercase. */
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
75 msg_len = strlen(compare_message);
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
76 for (i = 0; i < msg_len; i++) {
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
77 compare_message[i] = tolower(compare_message[i]);
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
78 }
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
79
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 226
diff changeset
80 /* If the string ends with ": ", remove the space.
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 226
diff changeset
81 ie "login: " vs "login:" */
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
82 if (msg_len > 2
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
83 && compare_message[msg_len-2] == ':'
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
84 && compare_message[msg_len-1] == ' ') {
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
85 compare_message[msg_len-1] = '\0';
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
86 }
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
87
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
88 switch((*msg)->msg_style) {
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
89
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
90 case PAM_PROMPT_ECHO_OFF:
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
91
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
92 if (!(strcmp(compare_message, "password:") == 0)) {
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 226
diff changeset
93 /* We don't recognise the prompt as asking for a password,
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 226
diff changeset
94 so can't handle it. Add more above as required for
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 573
diff changeset
95 different pam modules/implementations. If you need
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 573
diff changeset
96 to add an entry here please mail the Dropbear developer */
573
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
97 dropbear_log(LOG_NOTICE, "PAM unknown prompt '%s' (no echo)",
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
98 compare_message);
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
99 rc = PAM_CONV_ERR;
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
100 break;
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
101 }
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
102
131
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
103 /* You have to read the PAM module-writers' docs (do we look like
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
104 * module writers? no.) to find out that the module will
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
105 * free the pam_response and its resp element - ie we _must_ malloc
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
106 * it here */
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
107 resp = (struct pam_response*) m_malloc(sizeof(struct pam_response));
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
108 memset(resp, 0, sizeof(struct pam_response));
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
109
131
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
110 resp->resp = m_strdup(userDatap->passwd);
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
111 m_burn(userDatap->passwd, strlen(userDatap->passwd));
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
112 (*respp) = resp;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
113 break;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
114
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
115
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
116 case PAM_PROMPT_ECHO_ON:
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
117
573
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
118 if (!(
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
119 (strcmp(compare_message, "login:" ) == 0)
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
120 || (strcmp(compare_message, "please enter username:") == 0)
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
121 || (strcmp(compare_message, "username:") == 0)
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
122 )) {
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 226
diff changeset
123 /* We don't recognise the prompt as asking for a username,
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 226
diff changeset
124 so can't handle it. Add more above as required for
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 573
diff changeset
125 different pam modules/implementations. If you need
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 573
diff changeset
126 to add an entry here please mail the Dropbear developer */
573
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
127 dropbear_log(LOG_NOTICE, "PAM unknown prompt '%s' (with echo)",
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
128 compare_message);
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
129 rc = PAM_CONV_ERR;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
130 break;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
131 }
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
132
131
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
133 /* You have to read the PAM module-writers' docs (do we look like
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
134 * module writers? no.) to find out that the module will
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
135 * free the pam_response and its resp element - ie we _must_ malloc
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
136 * it here */
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
137 resp = (struct pam_response*) m_malloc(sizeof(struct pam_response));
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
138 memset(resp, 0, sizeof(struct pam_response));
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
139
131
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
140 resp->resp = m_strdup(userDatap->user);
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
141 TRACE(("userDatap->user='%s'", userDatap->user))
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
142 (*respp) = resp;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
143 break;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
144
818
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
145 case PAM_ERROR_MSG:
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
146 case PAM_TEXT_INFO:
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
147
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
148 if (msg_len > 0) {
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
149 buffer * pam_err = buf_new(msg_len + 4);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
150 buf_setpos(pam_err, 0);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
151 buf_putbytes(pam_err, "\r\n", 2);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
152 buf_putbytes(pam_err, (*msg)->msg, msg_len);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
153 buf_putbytes(pam_err, "\r\n", 2);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
154 buf_setpos(pam_err, 0);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
155
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
156 send_msg_userauth_banner(pam_err);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
157 buf_free(pam_err);
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
158 }
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
159 break;
8fe36617bf4e Send PAM error messages as a banner messages
Matt Johnston <matt@ucc.asn.au>
parents: 660
diff changeset
160
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
161 default:
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
162 TRACE(("Unknown message type"))
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
163 rc = PAM_CONV_ERR;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
164 break;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
165 }
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
166
226
9a9c6d633972 channel.h: make definition extern
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
167 m_free(compare_message);
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
168 TRACE(("leave pamConvFunc, rc %d", rc))
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
169
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
170 return rc;
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 }
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 /* Process a password auth request, sending success or failure messages as
121
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
174 * appropriate. To the client it looks like it's doing normal password auth (as
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
175 * opposed to keyboard-interactive or something), so the pam module has to be
9337c9f9a607 PAM improvements
Matt Johnston <matt@ucc.asn.au>
parents: 119
diff changeset
176 * fairly standard (ie just "what's your username, what's your password, OK").
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
177 *
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
178 * Keyboard interactive would be a lot nicer, but since PAM is synchronous, it
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
179 * gets very messy trying to send the interactive challenges, and read the
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
180 * interactive responses, over the network. */
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
181 void svr_auth_pam(int valid_user) {
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
182
131
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
183 struct UserDataS userData = {NULL, NULL};
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
184 struct pam_conv pamConv = {
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
185 pamConvFunc,
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
186 &userData /* submitted to pamvConvFunc as appdata_ptr */
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
187 };
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
188 const char* printable_user = NULL;
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
190 pam_handle_t* pamHandlep = NULL;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
191
1122
aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings
Matt Johnston <matt@ucc.asn.au>
parents: 819
diff changeset
192 char * password = NULL;
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
193 unsigned int passwordlen;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
194
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
195 int rc = PAM_SUCCESS;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
196 unsigned char changepw;
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
198 /* check if client wants to change password */
179
161557a9dde8 * fix longstanding bug with connections being closed on failure to
Matt Johnston <matt@ucc.asn.au>
parents: 169
diff changeset
199 changepw = buf_getbool(ses.payload);
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
200 if (changepw) {
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
201 /* not implemented by this server */
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
202 send_msg_userauth_failure(0, 1);
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
203 goto cleanup;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
204 }
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
205
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
206 password = buf_getstring(ses.payload, &passwordlen);
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
208 /* We run the PAM conversation regardless of whether the username is valid
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
209 in case the conversation function has an inherent delay.
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
210 Use ses.authstate.username rather than ses.authstate.pw_name.
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
211 After PAM succeeds we then check the valid_user flag too */
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
212
131
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
213 /* used to pass data to the PAM conversation function - don't bother with
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
214 * strdup() etc since these are touched only by our own conversation
9c372a039532 strdup() variables correctly for the PAM conversation function
Matt Johnston <matt@ucc.asn.au>
parents: 127
diff changeset
215 * function (above) which takes care of it */
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
216 userData.user = ses.authstate.username;
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
217 userData.passwd = password;
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
219 if (ses.authstate.pw_name) {
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
220 printable_user = ses.authstate.pw_name;
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
221 } else {
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
222 printable_user = "<invalid username>";
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
223 }
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
224
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
225 /* Init pam */
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
226 if ((rc = pam_start("sshd", NULL, &pamConv, &pamHandlep)) != PAM_SUCCESS) {
819
fee485ce81eb Get rid of spurious newlines in pam log messages
Matt Johnston <matt@ucc.asn.au>
parents: 818
diff changeset
227 dropbear_log(LOG_WARNING, "pam_start() failed, rc=%d, %s",
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
228 rc, pam_strerror(pamHandlep, rc));
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
229 goto cleanup;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
230 }
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
232 /* just to set it to something */
1238
c59c10803afd Fix parentheses weird placement
Chocobo1 <Chocobo1@users.noreply.github.com>
parents: 1122
diff changeset
233 if ((rc = pam_set_item(pamHandlep, PAM_TTY, "ssh")) != PAM_SUCCESS) {
819
fee485ce81eb Get rid of spurious newlines in pam log messages
Matt Johnston <matt@ucc.asn.au>
parents: 818
diff changeset
234 dropbear_log(LOG_WARNING, "pam_set_item() failed, rc=%d, %s",
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
235 rc, pam_strerror(pamHandlep, rc));
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
236 goto cleanup;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
237 }
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
238
1425
39aaf9f4d576 set PAM_RHOST
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
239 if ((rc = pam_set_item(pamHandlep, PAM_RHOST, svr_ses.remotehost)) != PAM_SUCCESS) {
39aaf9f4d576 set PAM_RHOST
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
240 dropbear_log(LOG_WARNING, "pam_set_item() failed, rc=%d, %s",
39aaf9f4d576 set PAM_RHOST
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
241 rc, pam_strerror(pamHandlep, rc));
39aaf9f4d576 set PAM_RHOST
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
242 goto cleanup;
39aaf9f4d576 set PAM_RHOST
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
243 }
39aaf9f4d576 set PAM_RHOST
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
244
573
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
245 #ifdef HAVE_PAM_FAIL_DELAY
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
246 /* We have our own random delay code already, disable PAM's */
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
247 (void) pam_fail_delay(pamHandlep, 0 /* musec_delay */);
573
d3ea8b9672f0 - Test for pam_fail_delay() function in configure
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
248 #endif
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
249
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
250 /* (void) pam_set_item(pamHandlep, PAM_FAIL_DELAY, (void*) pamDelayFunc); */
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
251
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
252 if ((rc = pam_authenticate(pamHandlep, 0)) != PAM_SUCCESS) {
819
fee485ce81eb Get rid of spurious newlines in pam log messages
Matt Johnston <matt@ucc.asn.au>
parents: 818
diff changeset
253 dropbear_log(LOG_WARNING, "pam_authenticate() failed, rc=%d, %s",
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
254 rc, pam_strerror(pamHandlep, rc));
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
255 dropbear_log(LOG_WARNING,
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 573
diff changeset
256 "Bad PAM password attempt for '%s' from %s",
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
257 printable_user,
158
364a75cfebab Log the IP along with auth success/fail attempts
Matt Johnston <matt@ucc.asn.au>
parents: 131
diff changeset
258 svr_ses.addrstring);
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
259 send_msg_userauth_failure(0, 1);
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
260 goto cleanup;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
261 }
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
263 if ((rc = pam_acct_mgmt(pamHandlep, 0)) != PAM_SUCCESS) {
819
fee485ce81eb Get rid of spurious newlines in pam log messages
Matt Johnston <matt@ucc.asn.au>
parents: 818
diff changeset
264 dropbear_log(LOG_WARNING, "pam_acct_mgmt() failed, rc=%d, %s",
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
265 rc, pam_strerror(pamHandlep, rc));
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
266 dropbear_log(LOG_WARNING,
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 573
diff changeset
267 "Bad PAM password attempt for '%s' from %s",
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
268 printable_user,
158
364a75cfebab Log the IP along with auth success/fail attempts
Matt Johnston <matt@ucc.asn.au>
parents: 131
diff changeset
269 svr_ses.addrstring);
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
270 send_msg_userauth_failure(0, 1);
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
271 goto cleanup;
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
272 }
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
273
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
274 if (!valid_user) {
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
275 /* PAM auth succeeded but the username isn't allowed in for another reason
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
276 (checkusername() failed) */
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
277 send_msg_userauth_failure(0, 1);
1629
258b57b208ae Fix for issue successfull login of disabled user (#78)
vincentto13 <33652988+vincentto13@users.noreply.github.com>
parents: 1616
diff changeset
278 goto cleanup;
1616
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
279 }
5d2d1021ca00 Wait to fail invalid usernames
Matt Johnston <matt@ucc.asn.au>
parents: 1425
diff changeset
280
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
281 /* successful authentication */
158
364a75cfebab Log the IP along with auth success/fail attempts
Matt Johnston <matt@ucc.asn.au>
parents: 131
diff changeset
282 dropbear_log(LOG_NOTICE, "PAM password auth succeeded for '%s' from %s",
464
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep
Matt Johnston <matt@ucc.asn.au>
parents: 432
diff changeset
283 ses.authstate.pw_name,
158
364a75cfebab Log the IP along with auth success/fail attempts
Matt Johnston <matt@ucc.asn.au>
parents: 131
diff changeset
284 svr_ses.addrstring);
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
285 send_msg_userauth_success();
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
286
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
287 cleanup:
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
288 if (password != NULL) {
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
289 m_burn(password, passwordlen);
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
290 m_free(password);
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
291 }
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
292 if (pamHandlep != NULL) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
293 TRACE(("pam_end"))
119
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
294 (void) pam_end(pamHandlep, 0 /* pam_status */);
3394a7cb30cd propagate of 08347df3bca787bd3621602fe2b466c85c9dc3e2 and 717950f4061f1123659ee87c7c168805af920ab7 from branch 'matt.dbclient.rez' to 'matt.dbclient.authpam'
Matt Johnston <matt@ucc.asn.au>
parents: 57
diff changeset
295 }
57
3b2a5a1c4347 svr-authpam code merged and works. needs tidying a log
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
296 }
127
33d976eeb859 put the #ifdefs back in for authpam
Matt Johnston <matt@ucc.asn.au>
parents: 121
diff changeset
297
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1238
diff changeset
298 #endif /* DROPBEAR_SVR_PAM_AUTH */