diff options
Diffstat (limited to 'Linux-PAM/modules/pam_ftp')
| -rw-r--r-- | Linux-PAM/modules/pam_ftp/Makefile.am | 31 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_ftp/Makefile.in | 665 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_ftp/README | 52 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_ftp/README.xml | 41 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_ftp/pam_ftp.8 | 95 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_ftp/pam_ftp.8.xml | 183 | ||||
| -rw-r--r-- | Linux-PAM/modules/pam_ftp/pam_ftp.c | 233 | ||||
| -rwxr-xr-x | Linux-PAM/modules/pam_ftp/tst-pam_ftp | 2 |
8 files changed, 1302 insertions, 0 deletions
diff --git a/Linux-PAM/modules/pam_ftp/Makefile.am b/Linux-PAM/modules/pam_ftp/Makefile.am new file mode 100644 index 00000000..e6d510a1 --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/Makefile.am @@ -0,0 +1,31 @@ +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + +CLEANFILES = *~ + +EXTRA_DIST = README $(MANS) $(XMLS) tst-pam_ftp + +man_MANS = pam_ftp.8 +XMLS = README.xml pam_ftp.8.xml + +securelibdir = $(SECUREDIR) +secureconfdir = $(SCONFIGDIR) + +AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include +AM_LDFLAGS = -no-undefined -avoid-version -module \ + -L$(top_builddir)/libpam -lpam +if HAVE_VERSIONING + AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map +endif + +securelib_LTLIBRARIES = pam_ftp.la + +TESTS = tst-pam_ftp + +if ENABLE_REGENERATE_MAN +noinst_DATA = README +README: pam_ftp.8.xml +-include $(top_srcdir)/Make.xml.rules +endif + diff --git a/Linux-PAM/modules/pam_ftp/Makefile.in b/Linux-PAM/modules/pam_ftp/Makefile.in new file mode 100644 index 00000000..875a71a1 --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/Makefile.in @@ -0,0 +1,665 @@ +# Makefile.in generated by automake 1.10 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = 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+.PHONY: CTAGS GTAGS all all-am check check-TESTS check-am clean \ + clean-generic clean-libtool clean-securelibLTLIBRARIES ctags \ + distclean distclean-compile distclean-generic \ + distclean-libtool distclean-tags distdir dvi dvi-am html \ + html-am info info-am install install-am install-data \ + install-data-am install-dvi install-dvi-am install-exec \ + install-exec-am install-html install-html-am install-info \ + install-info-am install-man install-man8 install-pdf \ + install-pdf-am install-ps install-ps-am \ + install-securelibLTLIBRARIES install-strip installcheck \ + installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am uninstall-man uninstall-man8 \ + uninstall-securelibLTLIBRARIES + +@ENABLE_REGENERATE_MAN_TRUE@README: pam_ftp.8.xml +@ENABLE_REGENERATE_MAN_TRUE@-include $(top_srcdir)/Make.xml.rules +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/Linux-PAM/modules/pam_ftp/README b/Linux-PAM/modules/pam_ftp/README new file mode 100644 index 00000000..15f4130e --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/README @@ -0,0 +1,52 @@ +pam_ftp — PAM module for anonymous access module + +━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ + +DESCRIPTION + +pam_ftp is a PAM module which provides a pluggable anonymous ftp mode of +access. + +This module intercepts the user's name and password. If the name is ftp or +anonymous, the user's password is broken up at the @ delimiter into a PAM_RUSER +and a PAM_RHOST part; these pam-items being set accordingly. The username ( +PAM_USER) is set to ftp. In this case the module succeeds. Alternatively, the +module sets the PAM_AUTHTOK item with the entered password and fails. + +This module is not safe and easily spoofable. + +OPTIONS + +debug + + Print debug information. + +ignore + + Pay no attention to the email address of the user (if supplied). + +ftp=XXX,YYY,... + + Instead of ftp or anonymous, provide anonymous login to the comma separated + list of users: XXX,YYY,.... Should the applicant enter one of these + usernames the returned username is set to the first in the list: XXX. + +EXAMPLES + +Add the following line to /etc/pam.d/ftpd to handle ftp style anonymous login: + +# +# ftpd; add ftp-specifics. These lines enable anonymous ftp over +# standard UN*X access (the listfile entry blocks access to +# users listed in /etc/ftpusers) +# +auth sufficient pam_ftp.so +auth required pam_unix.so use_first_pass +auth required pam_listfile.so \ + onerr=succeed item=user sense=deny file=/etc/ftpusers + + +AUTHOR + +pam_ftp was written by Andrew G. Morgan <morgan@kernel.org>. + diff --git a/Linux-PAM/modules/pam_ftp/README.xml b/Linux-PAM/modules/pam_ftp/README.xml new file mode 100644 index 00000000..65de28e3 --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/README.xml @@ -0,0 +1,41 @@ +<?xml version="1.0" encoding='UTF-8'?> +<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" +"http://www.docbook.org/xml/4.3/docbookx.dtd" +[ +<!-- +<!ENTITY pamaccess SYSTEM "pam_ftp.8.xml"> +--> +]> + +<article> + + <articleinfo> + + <title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_ftp.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_ftp-name"]/*)'/> + </title> + + </articleinfo> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_ftp.8.xml" xpointer='xpointer(//refsect1[@id = "pam_ftp-description"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_ftp.8.xml" xpointer='xpointer(//refsect1[@id = "pam_ftp-options"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_ftp.8.xml" xpointer='xpointer(//refsect1[@id = "pam_ftp-examples"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_ftp.8.xml" xpointer='xpointer(//refsect1[@id = "pam_ftp-author"]/*)'/> + </section> + +</article> diff --git a/Linux-PAM/modules/pam_ftp/pam_ftp.8 b/Linux-PAM/modules/pam_ftp/pam_ftp.8 new file mode 100644 index 00000000..0c730267 --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/pam_ftp.8 @@ -0,0 +1,95 @@ +.\" Title: pam_ftp +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.70.1 <http://docbook.sf.net/> +.\" Date: 06/09/2006 +.\" Manual: Linux\-PAM Manual +.\" Source: Linux\-PAM Manual +.\" +.TH "PAM_FTP" "8" "06/09/2006" "Linux\-PAM Manual" "Linux\-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_ftp \- PAM module for anonymous access module +.SH "SYNOPSIS" +.HP 11 +\fBpam_ftp.so\fR [debug] [ignore] [users=\fIXXX,YYY,\fR...] +.SH "DESCRIPTION" +.PP +pam_ftp is a PAM module which provides a pluggable anonymous ftp mode of access. +.PP +This module intercepts the user's name and password. If the name is +\fIftp\fR +or +\fIanonymous\fR, the user's password is broken up at the +\fI@\fR +delimiter into a +\fIPAM_RUSER\fR +and a +\fIPAM_RHOST\fR +part; these pam\-items being set accordingly. The username (\fIPAM_USER\fR) is set to +\fIftp\fR. In this case the module succeeds. Alternatively, the module sets the +\fIPAM_AUTHTOK\fR +item with the entered password and fails. +.PP +This module is not safe and easily spoofable. +.SH "OPTIONS" +.PP +.TP 3n +\fBdebug\fR +Print debug information. +.TP 3n +\fBignore\fR +Pay no attention to the email address of the user (if supplied). +.TP 3n +\fBftp=\fR\fB\fIXXX,YYY,...\fR\fR +Instead of +\fIftp\fR +or +\fIanonymous\fR, provide anonymous login to the comma separated list of users: +\fB\fIXXX,YYY,...\fR\fR. Should the applicant enter one of these usernames the returned username is set to the first in the list: +\fIXXX\fR. +.SH "MODULE SERVICES PROVIDED" +.PP +Only the +\fBauth\fR +service is supported. +.SH "RETURN VALUES" +.PP +.TP 3n +PAM_SUCCESS +The authentication was successfull. +.TP 3n +PAM_USER_UNKNOWN +User not known. +.SH "EXAMPLES" +.PP +Add the following line to +\fI/etc/pam.d/ftpd\fR +to handle ftp style anonymous login: +.sp +.RS 3n +.nf +# +# ftpd; add ftp\-specifics. These lines enable anonymous ftp over +# standard UN*X access (the listfile entry blocks access to +# users listed in /etc/ftpusers) +# +auth sufficient pam_ftp.so +auth required pam_unix.so use_first_pass +auth required pam_listfile.so \\ + onerr=succeed item=user sense=deny file=/etc/ftpusers + +.fi +.RE +.sp +.SH "SEE ALSO" +.PP + +\fBpam.conf\fR(5), +\fBpam.d\fR(8), +\fBpam\fR(8) +.SH "AUTHOR" +.PP +pam_ftp was written by Andrew G. Morgan <morgan@kernel.org>. diff --git a/Linux-PAM/modules/pam_ftp/pam_ftp.8.xml b/Linux-PAM/modules/pam_ftp/pam_ftp.8.xml new file mode 100644 index 00000000..aca21694 --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/pam_ftp.8.xml @@ -0,0 +1,183 @@ +<?xml version="1.0" encoding='UTF-8'?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" + "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"> + +<refentry id="pam_ftp"> + + <refmeta> + <refentrytitle>pam_ftp</refentrytitle> + <manvolnum>8</manvolnum> + <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_ftp-name"> + <refname>pam_ftp</refname> + <refpurpose>PAM module for anonymous access module</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis id="pam_ftp-cmdsynopsis"> + <command>pam_ftp.so</command> + <arg choice="opt"> + debug + </arg> + <arg choice="opt"> + ignore + </arg> + <arg choice="opt" rep='repeat'> + users=<replaceable>XXX,YYY,</replaceable> + </arg> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1 id="pam_ftp-description"> + + <title>DESCRIPTION</title> + + <para> + pam_ftp is a PAM module which provides a pluggable + anonymous ftp mode of access. + </para> + <para> + This module intercepts the user's name and password. If the name is + <emphasis>ftp</emphasis> or <emphasis>anonymous</emphasis>, the + user's password is broken up at the <emphasis>@</emphasis> delimiter + into a <emphasis>PAM_RUSER</emphasis> and a + <emphasis>PAM_RHOST</emphasis> part; these pam-items being set + accordingly. The username (<emphasis>PAM_USER</emphasis>) is set + to <emphasis>ftp</emphasis>. In this case the module succeeds. + Alternatively, the module sets the <emphasis>PAM_AUTHTOK</emphasis> + item with the entered password and fails. + </para> + <para> + This module is not safe and easily spoofable. + </para> + </refsect1> + + <refsect1 id="pam_ftp-options"> + + <title>OPTIONS</title> + <para> + <variablelist> + + <varlistentry> + <term> + <option>debug</option> + </term> + <listitem> + <para> + Print debug information. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>ignore</option> + </term> + <listitem> + <para> + Pay no attention to the email address of the user + (if supplied). + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> + <option>ftp=<replaceable>XXX,YYY,...</replaceable></option> + </term> + <listitem> + <para> + Instead of <emphasis>ftp</emphasis> or + <emphasis>anonymous</emphasis>, provide anonymous login + to the comma separated list of users: + <option><replaceable>XXX,YYY,...</replaceable></option>. + Should the applicant enter + one of these usernames the returned username is set to + the first in the list: <emphasis>XXX</emphasis>. + </para> + </listitem> + </varlistentry> + + </variablelist> + + </para> + </refsect1> + + <refsect1 id="pam_ftp-services"> + <title>MODULE SERVICES PROVIDED</title> + <para> + Only the <option>auth</option> service is supported. + </para> + </refsect1> + + <refsect1 id='pam_ftp-return_values'> + <title>RETURN VALUES</title> + <para> + <variablelist> + + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The authentication was successfull. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User not known. + </para> + </listitem> + </varlistentry> + + </variablelist> + </para> + </refsect1> + + <refsect1 id='pam_ftp-examples'> + <title>EXAMPLES</title> + <para> + Add the following line to <filename>/etc/pam.d/ftpd</filename> to + handle ftp style anonymous login: + <programlisting> +# +# ftpd; add ftp-specifics. These lines enable anonymous ftp over +# standard UN*X access (the listfile entry blocks access to +# users listed in /etc/ftpusers) +# +auth sufficient pam_ftp.so +auth required pam_unix.so use_first_pass +auth required pam_listfile.so \ + onerr=succeed item=user sense=deny file=/etc/ftpusers + </programlisting> + </para> + </refsect1> + + <refsect1 id='pam_ftp-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam.d</refentrytitle><manvolnum>8</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_ftp-author'> + <title>AUTHOR</title> + <para> + pam_ftp was written by Andrew G. Morgan <morgan@kernel.org>. + </para> + </refsect1> + +</refentry> diff --git a/Linux-PAM/modules/pam_ftp/pam_ftp.c b/Linux-PAM/modules/pam_ftp/pam_ftp.c new file mode 100644 index 00000000..948dd729 --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/pam_ftp.c @@ -0,0 +1,233 @@ +/* pam_ftp module */ + +/* + * $Id: pam_ftp.c,v 1.10 2005/10/04 11:35:18 ldv Exp $ + * + * Written by Andrew Morgan <morgan@linux.kernel.org> 1996/3/11 + * + */ + +#define PLEASE_ENTER_PASSWORD "Password required for %s." +#define GUEST_LOGIN_PROMPT "Guest login ok, " \ +"send your complete e-mail address as password." + +/* the following is a password that "can't be correct" */ +#define BLOCK_PASSWORD "\177BAD PASSWPRD\177" + +#include "config.h" + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <syslog.h> +#include <stdarg.h> +#include <string.h> + +/* + * here, we make a definition for the externally accessible function + * in this file (this definition is required for static a module + * but strongly encouraged generally) it is used to instruct the + * modules include file to define the function prototypes. + */ + +#define PAM_SM_AUTH + +#include <security/pam_modules.h> +#include <security/_pam_macros.h> +#include <security/pam_ext.h> + +/* argument parsing */ + +#define PAM_DEBUG_ARG 01 +#define PAM_IGNORE_EMAIL 02 +#define PAM_NO_ANON 04 + +static int +_pam_parse(pam_handle_t *pamh, int argc, const char **argv, const char **users) +{ + int ctrl=0; + + /* step through arguments */ + for (ctrl=0; argc-- > 0; ++argv) { + + /* generic options */ + + if (!strcmp(*argv,"debug")) + ctrl |= PAM_DEBUG_ARG; + else if (!strncmp(*argv,"users=",6)) { + *users = 6 + *argv; + } else if (!strcmp(*argv,"ignore")) { + ctrl |= PAM_IGNORE_EMAIL; + } else { + pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv); + } + } + + return ctrl; +} + +/* + * check if name is in list or default list. place users name in *_user + * return 1 if listed 0 if not. + */ + +static int lookup(const char *name, const char *list, const char **_user) +{ + int anon = 0; + + *_user = name; /* this is the default */ + if (list && *list) { + const char *l; + char *list_copy, *x; + + list_copy = x_strdup(list); + x = list_copy; + while (list_copy && (l = strtok(x, ","))) { + x = NULL; + if (!strcmp(name, l)) { + *_user = list; + anon = 1; + } + } + _pam_overwrite(list_copy); + _pam_drop(list_copy); + } else { +#define MAX_L 2 + static const char *l[MAX_L] = { "ftp", "anonymous" }; + int i; + + for (i=0; i<MAX_L; ++i) { + if (!strcmp(l[i], name)) { + *_user = l[0]; + anon = 1; + break; + } + } + } + + return anon; +} + +/* --- authentication management functions (only) --- */ + +PAM_EXTERN int +pam_sm_authenticate (pam_handle_t *pamh, int flags UNUSED, + int argc, const char **argv) +{ + int retval, anon=0, ctrl; + const char *user; + const char *users = NULL; + + /* + * this module checks if the user name is ftp or annonymous. If + * this is the case, it can set the PAM_RUSER to the entered email + * address and SUCCEEDS, otherwise it FAILS. + */ + + ctrl = _pam_parse(pamh, argc, argv, &users); + + retval = pam_get_user(pamh, &user, NULL); + if (retval != PAM_SUCCESS || user == NULL) { + pam_syslog(pamh, LOG_ERR, "no user specified"); + return PAM_USER_UNKNOWN; + } + + if (!(ctrl & PAM_NO_ANON)) { + anon = lookup(user, users, &user); + } + + if (anon) { + retval = pam_set_item(pamh, PAM_USER, (const void *)user); + if (retval != PAM_SUCCESS || user == NULL) { + pam_syslog(pamh, LOG_ERR, "user resetting failed"); + return PAM_USER_UNKNOWN; + } + } + + /* + * OK. we require an email address for user or the user's password. + * - build conversation and get their input. + */ + + { + char *resp = NULL; + const char *token; + + if (!anon) + retval = pam_prompt (pamh, PAM_PROMPT_ECHO_OFF, &resp, + PLEASE_ENTER_PASSWORD, user); + else + retval = pam_prompt (pamh, PAM_PROMPT_ECHO_OFF, &resp, + GUEST_LOGIN_PROMPT); + + if (retval != PAM_SUCCESS) { + _pam_drop (resp); + return ((retval == PAM_CONV_AGAIN) + ? PAM_INCOMPLETE:PAM_AUTHINFO_UNAVAIL); + } + + if (anon) { + /* XXX: Some effort should be made to verify this email address! */ + + if (!(ctrl & PAM_IGNORE_EMAIL)) { + token = strtok(resp, "@"); + retval = pam_set_item(pamh, PAM_RUSER, token); + + if ((token) && (retval == PAM_SUCCESS)) { + token = strtok(NULL, "@"); + retval = pam_set_item(pamh, PAM_RHOST, token); + } + } + + /* we are happy to grant annonymous access to the user */ + retval = PAM_SUCCESS; + + } else { + /* + * we have a password so set AUTHTOK + */ + + pam_set_item(pamh, PAM_AUTHTOK, resp); + + /* + * this module failed, but the next one might succeed with + * this password. + */ + + retval = PAM_AUTH_ERR; + } + + /* clean up */ + _pam_drop(resp); + + /* success or failure */ + + return retval; + } +} + +PAM_EXTERN int +pam_sm_setcred (pam_handle_t *pamh UNUSED, int flags UNUSED, + int argc UNUSED, const char **argv UNUSED) +{ + return PAM_IGNORE; +} + + +#ifdef PAM_STATIC + +/* static module data */ + +struct pam_module _pam_ftp_modstruct = { + "pam_ftp", + pam_sm_authenticate, + pam_sm_setcred, + NULL, + NULL, + NULL, + NULL, +}; + +#endif + +/* end of module definition */ diff --git a/Linux-PAM/modules/pam_ftp/tst-pam_ftp b/Linux-PAM/modules/pam_ftp/tst-pam_ftp new file mode 100755 index 00000000..1a4f67c7 --- /dev/null +++ b/Linux-PAM/modules/pam_ftp/tst-pam_ftp @@ -0,0 +1,2 @@ +#!/bin/sh +../../tests/tst-dlopen .libs/pam_ftp.so |