1 files changed, 70 insertions, 154 deletions

diff --git a/auth-passwd.c b/auth-passwd.c
index 2307c1e5e..971c7ba19 100644
--- a/auth-passwd.c
+++ b/auth-passwd.c
@@ -36,55 +36,20 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth-passwd.c,v 1.27 2002/05/24 16:45:16 stevesk Exp $");
+RCSID("$OpenBSD: auth-passwd.c,v 1.29 2003/08/26 09:58:43 markus Exp $");
 
 #include "packet.h"
 #include "log.h"
 #include "servconf.h"
 #include "auth.h"
-
-#if !defined(USE_PAM) && !defined(HAVE_OSF_SIA)
-/* Don't need any of these headers for the PAM or SIA cases */
-# ifdef HAVE_CRYPT_H
-#  include <crypt.h>
-# endif
-# ifdef WITH_AIXAUTHENTICATE
-#  include <login.h>
-# endif
-# ifdef __hpux
-#  include <hpsecurity.h>
-#  include <prot.h>
-# endif
-# ifdef HAVE_SECUREWARE
-#  include <sys/security.h>
-#  include <sys/audit.h>
-#  include <prot.h>
-# endif /* HAVE_SECUREWARE */
-# if defined(HAVE_SHADOW_H) && !defined(DISABLE_SHADOW)
-#  include <shadow.h>
-# endif
-# if defined(HAVE_GETPWANAM) && !defined(DISABLE_SHADOW)
-#  include <sys/label.h>
-#  include <sys/audit.h>
-#  include <pwdadj.h>
-# endif
-# if defined(HAVE_MD5_PASSWORDS) && !defined(HAVE_MD5_CRYPT)
-#  include "md5crypt.h"
-# endif /* defined(HAVE_MD5_PASSWORDS) && !defined(HAVE_MD5_CRYPT) */
-
-# ifdef HAVE_CYGWIN
-#  undef ERROR
-#  include <windows.h>
-#  include <sys/cygwin.h>
-#  define is_winnt       (GetVersion() < 0x80000000)
-# endif
-#endif /* !USE_PAM && !HAVE_OSF_SIA */
-
-extern ServerOptions options;
 #ifdef WITH_AIXAUTHENTICATE
-extern char *aixloginmsg;
+# include "buffer.h"
+# include "canohost.h"
+extern Buffer loginmsg;
 #endif
 
+extern ServerOptions options;
+
 /*
  * Tries to authenticate the user using password.  Returns true if
  * authentication succeeds.
@@ -94,58 +59,25 @@ auth_password(Authctxt *authctxt, const char *password)
 {
         struct passwd * pw = authctxt->pw;
         int ok = authctxt->valid;
-#if !defined(USE_PAM) && !defined(HAVE_OSF_SIA)
-        char *encrypted_password;
-        char *pw_password;
-        char *salt;
-# if defined(__hpux) || defined(HAVE_SECUREWARE)
-        struct pr_passwd *spw;
-# endif /* __hpux || HAVE_SECUREWARE */
-# if defined(HAVE_SHADOW_H) && !defined(DISABLE_SHADOW)
-        struct spwd *spw;
-# endif
-# if defined(HAVE_GETPWANAM) && !defined(DISABLE_SHADOW)
-        struct passwd_adjunct *spw;
-# endif
-# ifdef WITH_AIXAUTHENTICATE
-        char *authmsg;
-        int authsuccess;
-        int reenter = 1;
-# endif
-#endif /* !defined(USE_PAM) && !defined(HAVE_OSF_SIA) */
 
         /* deny if no user. */
         if (pw == NULL)
-                ok = 0;
+                return 0;
 #ifndef HAVE_CYGWIN
         if (pw && pw->pw_uid == 0 && options.permit_root_login != PERMIT_YES)
                 ok = 0;
 #endif
         if (*password == '\0' && options.permit_empty_passwd == 0)
-                ok = 0;
-
-#if defined(USE_PAM)
-        /*
-         * If the user logging in is root and RootLogin=no, always attempt
-         * an invalid root login to prevent leaking timing information
-         */
-        if (pw && pw->pw_uid == 0 && options.permit_root_login != PERMIT_YES) {
-                auth_pam_password(authctxt, "\b\n\r\177INCORRECT");
                 return 0;
-        }
-        return auth_pam_password(authctxt, password) && ok;
-#elif defined(HAVE_OSF_SIA)
-        if (!ok)
-                return 0;
-        return auth_sia_password(authctxt, password);
+
+#if defined(HAVE_OSF_SIA)
+        return auth_sia_password(authctxt, password) && ok;
 #else
-        if (!ok)
-                return 0;
 # ifdef KRB5
         if (options.kerberos_authentication == 1) {
                 int ret = auth_krb5_password(authctxt, password);
                 if (ret == 1 || ret == 0)
-                        return ret;
+                        return ret && ok;
                 /* Fall back to ordinary passwd authentication. */
         }
 # endif
@@ -156,27 +88,47 @@ auth_password(Authctxt *authctxt, const char *password)
                 if (hToken == INVALID_HANDLE_VALUE)
                         return 0;
                 cygwin_set_impersonation_token(hToken);
-                return 1;
+                return ok;
         }
 # endif
 # ifdef WITH_AIXAUTHENTICATE
-        authsuccess = (authenticate(pw->pw_name,password,&reenter,&authmsg) == 0);
-
-        if (authsuccess)
-                /* We don't have a pty yet, so just label the line as "ssh" */
-                if (loginsuccess(authctxt->user,
-                        get_canonical_hostname(options.verify_reverse_mapping),
-                        "ssh", &aixloginmsg) < 0)
-                                aixloginmsg = NULL;
-
-        return(authsuccess);
-# endif
-# ifdef KRB4
-        if (options.kerberos_authentication == 1) {
-                int ret = auth_krb4_password(authctxt, password);
-                if (ret == 1 || ret == 0)
-                        return ret;
-                /* Fall back to ordinary passwd authentication. */
+        {
+                char *authmsg = NULL;
+                int reenter = 1;
+                int authsuccess = 0;
+
+                if (authenticate(pw->pw_name, password, &reenter,
+                    &authmsg) == 0 && ok) {
+                        char *msg;
+                        char *host = 
+                            (char *)get_canonical_hostname(options.use_dns);
+
+                        authsuccess = 1;
+                        aix_remove_embedded_newlines(authmsg);  
+
+                        debug3("AIX/authenticate succeeded for user %s: %.100s",
+                                pw->pw_name, authmsg);
+
+                        /* No pty yet, so just label the line as "ssh" */
+                        aix_setauthdb(authctxt->user);
+                        if (loginsuccess(authctxt->user, host, "ssh", 
+                            &msg) == 0) {
+                                if (msg != NULL) {
+                                        debug("%s: msg %s", __func__, msg);
+                                        buffer_append(&loginmsg, msg, 
+                                            strlen(msg));
+                                        xfree(msg);
+                                }
+                        }
+                } else {
+                        debug3("AIX/authenticate failed for user %s: %.100s",
+                            pw->pw_name, authmsg);
+                }
+
+                if (authmsg != NULL)
+                        xfree(authmsg);
+
+                return authsuccess;
         }
 # endif
 # ifdef BSD_AUTH
@@ -184,64 +136,28 @@ auth_password(Authctxt *authctxt, const char *password)
             (char *)password) == 0)
                 return 0;
         else
-                return 1;
-# endif
-        pw_password = pw->pw_passwd;
-
-        /*
-         * Various interfaces to shadow or protected password data
-         */
-# if defined(HAVE_SHADOW_H) && !defined(DISABLE_SHADOW)
-        spw = getspnam(pw->pw_name);
-        if (spw != NULL)
-                pw_password = spw->sp_pwdp;
-# endif /* defined(HAVE_SHADOW_H) && !defined(DISABLE_SHADOW) */
-
-# if defined(HAVE_GETPWANAM) && !defined(DISABLE_SHADOW)
-        if (issecure() && (spw = getpwanam(pw->pw_name)) != NULL)
-                pw_password = spw->pwa_passwd;
-# endif /* defined(HAVE_GETPWANAM) && !defined(DISABLE_SHADOW) */
-
-# ifdef HAVE_SECUREWARE
-        if ((spw = getprpwnam(pw->pw_name)) != NULL)
-                pw_password = spw->ufld.fd_encrypt;
-# endif /* HAVE_SECUREWARE */
-
-# if defined(__hpux) && !defined(HAVE_SECUREWARE)
-        if (iscomsec() && (spw = getprpwnam(pw->pw_name)) != NULL)
-                pw_password = spw->ufld.fd_encrypt;
-# endif /* defined(__hpux) && !defined(HAVE_SECUREWARE) */
+                return ok;
+# else
+        {
+        /* Just use the supplied fake password if authctxt is invalid */
+        char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd;
 
         /* Check for users with no password. */
-        if ((password[0] == '\0') && (pw_password[0] == '\0'))
-                return 1;
-
-        if (pw_password[0] != '\0')
-                salt = pw_password;
-        else
-                salt = "xx";
+        if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0)
+                return ok;
+        else {
+                /* Encrypt the candidate password using the proper salt. */
+                char *encrypted_password = xcrypt(password,
+                    (pw_password[0] && pw_password[1]) ? pw_password : "xx");
+
+                /*
+                 * Authentication is accepted if the encrypted passwords
+                 * are identical.
+                 */
+                return (strcmp(encrypted_password, pw_password) == 0) && ok;
+        }
 
-# ifdef HAVE_MD5_PASSWORDS
-        if (is_md5_salt(salt))
-                encrypted_password = md5_crypt(password, salt);
-        else
-                encrypted_password = crypt(password, salt);
-# else /* HAVE_MD5_PASSWORDS */
-#  if defined(__hpux) && !defined(HAVE_SECUREWARE)
-        if (iscomsec())
-                encrypted_password = bigcrypt(password, salt);
-        else
-                encrypted_password = crypt(password, salt);
-#  else
-#   ifdef HAVE_SECUREWARE
-        encrypted_password = bigcrypt(password, salt);
-#   else
-        encrypted_password = crypt(password, salt);
-#   endif /* HAVE_SECUREWARE */
-#  endif /* __hpux && !defined(HAVE_SECUREWARE) */
-# endif /* HAVE_MD5_PASSWORDS */
-
-        /* Authentication is accepted if the encrypted passwords are identical. */
-        return (strcmp(encrypted_password, pw_password) == 0);
-#endif /* !USE_PAM && !HAVE_OSF_SIA */
+        }
+# endif
+#endif /* !HAVE_OSF_SIA */
 }