]>
Commit | Line | Data |
---|---|---|
34fee935 | 1 | /* |
2 | * Copyright (c) 2005 The SCO Group. All rights reserved. | |
3 | * Copyright (c) 2005 Tim Rice. All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * | |
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
17 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
24 | */ | |
25 | ||
26 | #include "includes.h" | |
27 | ||
e00da40d | 28 | #ifdef HAVE_LIBIAF |
2e437378 | 29 | #include <sys/types.h> |
34fee935 | 30 | #ifdef HAVE_CRYPT_H |
2e437378 | 31 | # include <crypt.h> |
34fee935 | 32 | #endif |
2e437378 | 33 | #include <pwd.h> |
34 | #include <stdarg.h> | |
35 | #include <stdlib.h> | |
36 | #include <stdio.h> | |
37 | #include <string.h> | |
38 | ||
39 | #include "xmalloc.h" | |
34fee935 | 40 | #include "packet.h" |
41 | #include "buffer.h" | |
2e437378 | 42 | #include "auth-options.h" |
34fee935 | 43 | #include "log.h" |
44 | #include "servconf.h" | |
2e437378 | 45 | #include "key.h" |
46 | #include "hostfile.h" | |
34fee935 | 47 | #include "auth.h" |
2e437378 | 48 | #include "ssh.h" |
34fee935 | 49 | |
50 | int nischeck(char *); | |
51 | ||
52 | int | |
53 | sys_auth_passwd(Authctxt *authctxt, const char *password) | |
54 | { | |
55 | struct passwd *pw = authctxt->pw; | |
34fee935 | 56 | char *salt; |
57 | int result; | |
58 | ||
59 | /* Just use the supplied fake password if authctxt is invalid */ | |
60 | char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd; | |
61 | ||
62 | /* Check for users with no password. */ | |
63 | if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0) | |
64 | return (1); | |
65 | ||
66 | /* Encrypt the candidate password using the proper salt. */ | |
67 | salt = (pw_password[0] && pw_password[1]) ? pw_password : "xx"; | |
34fee935 | 68 | |
69 | /* | |
70 | * Authentication is accepted if the encrypted passwords | |
71 | * are identical. | |
72 | */ | |
e00da40d | 73 | #ifdef UNIXWARE_LONG_PASSWORDS |
74 | if (!nischeck(pw->pw_name)) { | |
75 | result = ((strcmp(bigcrypt(password, salt), pw_password) == 0) | |
76 | || (strcmp(osr5bigcrypt(password, salt), pw_password) == 0)); | |
77 | } | |
78 | else | |
79 | #endif /* UNIXWARE_LONG_PASSWORDS */ | |
80 | result = (strcmp(xcrypt(password, salt), pw_password) == 0); | |
34fee935 | 81 | |
e00da40d | 82 | #if !defined(BROKEN_LIBIAF) |
34fee935 | 83 | if (authctxt->valid) |
84 | free(pw_password); | |
e00da40d | 85 | #endif |
34fee935 | 86 | return(result); |
87 | } | |
88 | ||
89 | #ifdef UNIXWARE_LONG_PASSWORDS | |
90 | int | |
91 | nischeck(char *namep) | |
92 | { | |
93 | char password_file[] = "/etc/passwd"; | |
94 | FILE *fd; | |
95 | struct passwd *ent = NULL; | |
96 | ||
97 | if ((fd = fopen (password_file, "r")) == NULL) { | |
98 | /* | |
99 | * If the passwd file has dissapeared we are in a bad state. | |
100 | * However, returning 0 will send us back through the | |
101 | * authentication scheme that has checked the ia database for | |
102 | * passwords earlier. | |
103 | */ | |
104 | return(0); | |
105 | } | |
106 | ||
107 | /* | |
108 | * fgetpwent() only reads from password file, so we know for certain | |
109 | * that the user is local. | |
110 | */ | |
111 | while (ent = fgetpwent(fd)) { | |
112 | if (strcmp (ent->pw_name, namep) == 0) { | |
113 | /* Local user */ | |
114 | fclose (fd); | |
115 | return(0); | |
116 | } | |
117 | } | |
118 | ||
119 | fclose (fd); | |
120 | return (1); | |
121 | } | |
122 | ||
123 | #endif /* UNIXWARE_LONG_PASSWORDS */ | |
124 | ||
125 | /* | |
126 | NOTE: ia_get_logpwd() allocates memory for arg 2 | |
127 | functions that call shadow_pw() will need to free | |
128 | */ | |
129 | ||
e00da40d | 130 | #if !defined(BROKEN_LIBIAF) |
34fee935 | 131 | char * |
132 | get_iaf_password(struct passwd *pw) | |
133 | { | |
134 | char *pw_password = NULL; | |
135 | ||
136 | uinfo_t uinfo; | |
137 | if (!ia_openinfo(pw->pw_name,&uinfo)) { | |
138 | ia_get_logpwd(uinfo, &pw_password); | |
139 | if (pw_password == NULL) | |
140 | fatal("ia_get_logpwd: Unable to get the shadow passwd"); | |
141 | ia_closeinfo(uinfo); | |
142 | return pw_password; | |
143 | } | |
144 | else | |
145 | fatal("ia_openinfo: Unable to open the shadow passwd file"); | |
146 | } | |
e00da40d | 147 | #endif /* !BROKEN_LIBIAF */ |
148 | #endif /* HAVE_LIBIAF */ | |
34fee935 | 149 |