diff options
| author | Rustem Shaykhutdinov | 2018-11-13 22:35:38 +0300 |
|---|---|---|
| committer | Rustem Shaykhutdinov | 2018-11-13 22:35:38 +0300 |
| commit | 073471c7c7cc04c1d64f5da9611c99ec113c9f0c (patch) | |
| tree | 28ba491f00a5b639b194d215825ae315d310d9bb | |
| parent | 2f947e71f73480000b1e359b4a17e417c3668262 (diff) | |
| download | aur-073471c7c7cc04c1d64f5da9611c99ec113c9f0c.tar.gz | |
fixed CVE-2018-11574
| -rw-r--r-- | PKGBUILD | 11 | ||||
| -rw-r--r-- | ppp-2.4.7-eaptls-mppe-0.999.patch | 3205 |
2 files changed, 7 insertions, 3209 deletions
@@ -2,7 +2,7 @@ # Maintainer: Rustem Shaykhutdinov <buzz.rustem@gmail.com> pkgname=ppp-eap-tls pkgver=2.4.7 -pkgrel=1 +pkgrel=2 pkgdesc="EAP-TLS patched daemon which implements the Point-to-Point Protocol for dial-up networking." arch=(i686 x86_64) url="http://www.samba.org/ppp/" @@ -12,7 +12,7 @@ provides=('ppp') conflicts=('ppp') backup=(etc/ppp/{chap-secrets,pap-secrets,options,ip-up,ip-down,ip-down.d/00-dns.sh,ip-up.d/00-dns.sh,ipv6-up.d/00-iface-config.sh}) source=(https://download.samba.org/pub/ppp/ppp-${pkgver}.tar.gz{,.asc} - "https://www.nikhef.nl/~janjust/ppp/ppp-2.4.7-eaptls-mppe-0.999.patch" + "https://www.nikhef.nl/~janjust/ppp/ppp-2.4.7-eaptls-mppe-1.101.patch" ppp-2.4.6-makefiles.patch options ip-up @@ -25,10 +25,11 @@ source=(https://download.samba.org/pub/ppp/ppp-${pkgver}.tar.gz{,.asc} ppp.systemd CVE-2015-3310.patch ppp-build-fix.patch::"https://github.com/paulusmack/ppp/commit/50a2997b.patch" + ppp-openssl.patch::https://github.com/paulusmack/ppp/commit/3c7b86229f7bd2600d74db14b1fe5b3896be3875.patch LICENSE) sha256sums=('02e0a3dd3e4799e33103f70ec7df75348c8540966ee7c948e4ed8a42bbccfb30' 'SKIP' - '51fec18a1df323eed8bf96f69c868fac4be28d0de1607a24c5b7b8d566871e99' + 'f7efef8dcddb3492cb1b92ee8c11a12a3330a14816627c8e6af7532a755e3992' 'f04f47318226c79594f45b8b75877c30710d22fe0fb1e2e17db3b4257dc4218c' '0933fecb9e0adaddd88ee1e049a5f3a0508e83b81dc1aa333df784e729ab4b6e' 'ddef42b2cc5d49e81556dc9dbacf5ee3bf8dc32704f3670c2233eed42c4a4efd' @@ -41,6 +42,7 @@ sha256sums=('02e0a3dd3e4799e33103f70ec7df75348c8540966ee7c948e4ed8a42bbccfb30' 'eb8ab2e2d71c3bb9c4297cf847b6e9d52616a3fdbf2257c479cc43dff318c831' 'f0fe7e7d9b35141c2565a09e39c4f66b475ed3fe8e2528d10faa4412f480e338' '94225c64e806e75d6f792649c4beb26a791c4994c2701dc6a47cfccf3d91e4bf' + '3f199d83d2632274dbbe7345e5369891469f64642f28e4afb471747a88888b62' '96fd35104e3d0ec472517afecead88419913ae73ae0189476d5dad9029c2be42') validpgpkeys=('631E179E370CD727A7F2A33A9E4295D605F66CE9') # Paul Mackerras (Signing key) <paulus@samba.org> @@ -50,7 +52,8 @@ prepare() { patch -p1 -i "${srcdir}/ppp-2.4.6-makefiles.patch" patch -p1 -i "${srcdir}/CVE-2015-3310.patch" patch -p1 -i "${srcdir}/ppp-build-fix.patch" - patch -p1 -i "${srcdir}/ppp-2.4.7-eaptls-mppe-0.999.patch" + patch -p1 -i "${srcdir}/ppp-2.4.7-eaptls-mppe-1.101.patch" + patch -p1 -i "${srcdir}/ppp-openssl.patch" # enable active filter sed -i "s:^#FILTER=y:FILTER=y:" pppd/Makefile.linux diff --git a/ppp-2.4.7-eaptls-mppe-0.999.patch b/ppp-2.4.7-eaptls-mppe-0.999.patch deleted file mode 100644 index 2f71a8e7a25c..000000000000 --- a/ppp-2.4.7-eaptls-mppe-0.999.patch +++ /dev/null @@ -1,3205 +0,0 @@ -diff -Naur ppp-2.4.7/README.eap-tls ppp-2.4.7-eaptls-mppe-0.999/README.eap-tls ---- ppp-2.4.7/README.eap-tls 1970-01-01 01:00:00.000000000 +0100 -+++ ppp-2.4.7-eaptls-mppe-0.999/README.eap-tls 2017-05-09 14:38:55.129084488 +0200 -@@ -0,0 +1,280 @@ -+EAP-TLS authentication support for PPP -+====================================== -+ -+1. Intro -+ -+ The Extensible Authentication Protocol (EAP; RFC 3748) is a -+ security protocol that can be used with PPP. It provides a means -+ to plug in multiple optional authentication methods. -+ -+ Transport Level Security (TLS; RFC 2246) provides for mutual -+ authentication, integrity-protected ciphersuite negotiation and -+ key exchange between two endpoints. It also provides for optional -+ MPPE encryption. -+ -+ EAP-TLS (RFC 2716) incapsulates the TLS messages in EAP packets, -+ allowing TLS mutual authentication to be used as a generic EAP -+ mechanism. It also provides optional encryption using the MPPE -+ protocol. -+ -+ This patch provide EAP-TLS support to pppd. -+ This authentication method can be used in both client or server -+ mode. -+ -+2. Building -+ -+ To build pppd with EAP-TLS support, OpenSSL (http://www.openssl.org) -+ is required. Any version from 0.9.7 should work. -+ -+ Configure, compile, and install as usual. -+ -+3. Configuration -+ -+ On the client side there are two ways to configure EAP-TLS: -+ -+ 1. supply the appropriate 'ca', 'cert' and 'key' command-line parameters -+ -+ 2. edit the /etc/ppp/eaptls-client file. -+ Insert a line for each system with which you use EAP-TLS. -+ The line is composed of this fields separated by tab: -+ -+ - Client name -+ The name used by the client for authentication, can be * -+ - Server name -+ The name of the server, can be * -+ - Client certificate file -+ The file containing the certificate chain for the -+ client in PEM format -+ - Server certificate file -+ If you want to specify the certificate that the -+ server is allowed to use, put the certificate file name. -+ Else put a dash '-'. -+ - CA certificate file -+ The file containing the trusted CA certificates in PEM -+ format. -+ - Client private key file -+ The file containing the client private key in PEM format. -+ -+ -+ On the server side edit the /etc/ppp/eaptls-server file. -+ Insert a line for each system with which you use EAP-TLS. -+ The line is composed of this fields separated by tab: -+ -+ - Client name -+ The name used by the client for authentication, can be * -+ - Server name -+ The name of the server, can be * -+ - Client certificate file -+ If you want to specify the certificate that the -+ client is allowed to use, put the certificate file name. -+ Else put a dash '-'. -+ - Server certificate file -+ The file containing the certificate chain for the -+ server in PEM format -+ - CA certificate file -+ The file containing the trusted CA certificates in PEM format. -+ - Client private key file -+ The file containing the server private key in PEM format. -+ - addresses -+ A list of IP addresses the client is allowed to use. -+ -+ -+ OpenSSL engine support is included starting with v0.95 of this patch. -+ Currently the only engine tested is the 'pkcs11' engine (hardware token -+ support). To use the 'pksc11' engine: -+ - Use a special private key fileiname in the /etc/ppp/eaptls-client file: -+ <engine>:<identifier> -+ e.g. -+ pkcs11:123456 -+ -+ - The certificate can also be loaded from the 'pkcs11' engine using -+ a special client certificate filename in the /etc/ppp/eaptls-client file: -+ <engine>:<identifier> -+ e.g. -+ pkcs11:123456 -+ -+ - Create an /etc/ppp/openssl.cnf file to load the right OpenSSL engine prior -+ to starting 'pppd'. A sample openssl.cnf file is -+ -+ openssl_conf = openssl_def -+ -+ [ openssl_def ] -+ engines = engine_section -+ -+ [ engine_section ] -+ pkcs11 = pkcs11_section -+ -+ [ pkcs11_section ] -+ engine_id = pkcs11 -+ dynamic_path = /usr/lib64/openssl/engines/engine_pkcs11.so -+ MODULE_PATH = /usr/lib64/libeTPkcs11.so -+ init = 0 -+ -+ - There are two ways to specify a password/PIN for the PKCS11 engine: -+ - inside the openssl.cnf file using -+ PIN = your-secret-pin -+ Note The keyword 'PIN' is case sensitive! -+ - Using the 'password' in the ppp options file. -+ From v0.97 of the eap-tls patch the password can also be supplied -+ using the appropriate 'eaptls_passwd_hook' (see plugins/passprompt.c -+ for an example). -+ -+ -+4. Options -+ -+ These pppd options are available: -+ -+ ca <ca-file> -+ Use the CA public certificate found in <ca-file> in PEM format -+ cert <cert-file> -+ Use the client public certificate found in <cert-file> in PEM format -+ or in engine:engine_id format -+ key <key-file> -+ Use the client private key found in <key-file> in PEM format -+ or in engine:engine_id format -+ crl <crl-file> -+ Use the Certificate Revocation List (CRL) file <crl-file> in PEM format. -+ crl-dir <dir> -+ Use CRL files from directory <dir>. It contains CRL files in PEM -+ format and each file contains a CRL. The files are looked up -+ by the issuer name hash value. Use the c_rehash utility -+ to create necessary links. -+ need-peer-eap -+ If the peer doesn't ask us to authenticate or doesn't use eap -+ to authenticate us, disconnect. -+ -+ Note: -+ password-encrypted certificates can be used as of v0.94 of this -+ patch. The password for the eap-tls.key file is specified using -+ the regular -+ password .... -+ statement in the ppp options file, or by using the appropriate -+ plugin which supplies a 'eaptls_passwd_hook' routine. -+ -+5. Connecting -+ -+ If you're setting up a pppd server, edit the EAP-TLS configuration file -+ as written above and then run pppd with the 'auth' option to authenticate -+ the client. The EAP-TLS method will be used if the other eap methods can't -+ be used (no secrets). -+ -+ If you're setting up a client, edit the configuration file and then run -+ pppd with 'remotename' option to specify the server name. Add the -+ 'need-peer-eap' option if you want to be sure the peer ask you to -+ authenticate (and to use eap) and to disconnect if it doesn't. -+ -+6. Example -+ -+ The following example can be used to connect a Linux client with the 'pptp' -+ package to a Linux server running the 'pptpd' (PoPToP) package. The server -+ was configured with a certificate with name (CN) 'pptp-server', the client -+ was configured with a certificate with name (CN) 'pptp-client', both -+ signed by the same Certificate Authority (CA). -+ -+ Server side: -+ - /etc/pptpd.conf file: -+ option /etc/ppp/options-pptpd-eaptls -+ localip 172.16.1.1 -+ remoteip 172.16.1.10-20 -+ - /etc/ppp/options-pptpd-eaptls file: -+ name pptp-server -+ lock -+ mtu 1500 -+ mru 1450 -+ auth -+ lcp-echo-failure 3 -+ lcp-echo-interval 5 -+ nodeflate -+ nobsdcomp -+ nopredictor1 -+ nopcomp -+ noaccomp -+ -+ require-eap -+ require-mppe-128 -+ -+ crl /home/janjust/ppp/keys/crl.pem -+ -+ debug -+ logfile /tmp/pppd.log -+ -+ - /etc/ppp/eaptls-server file: -+ * pptp-server - /etc/ppp/pptp-server.crt /etc/ppp/ca.crt /etc/ppp/pptp-server.key * -+ -+ - On the server, run -+ pptdp --conf /etc/pptpd.conf -+ -+ Client side: -+ - Run -+ pppd noauth require-eap require-mppe-128 \ -+ ipcp-accept-local ipcp-accept-remote noipdefault \ -+ cert /etc/ppp/keys/pptp-client.crt \ -+ key /etc/ppp/keys/pptp-client.key \ -+ ca /etc/ppp/keys/ca.crt \ -+ name pptp-client remotename pptp-server \ -+ debug logfile /tmp/pppd.log -+ pty "pptp pptp-server.example.com --nolaunchpppd" -+ -+ Check /var/log/messages and the files /tmp/pppd.log on both sides for debugging info. -+ -+7. Notes -+ -+ This is experimental code. -+ Send suggestions and comments to Jan Just Keijser <janjust@nikhef.nl> -+ -+8. Changelog of ppp-<>-eaptls-mppe-* patches -+ -+v0.7 (22-Nov-2005) -+ - First version of the patch to include MPPE support -+ - ppp-2.4.3 only -+v0.9 (25-Jul-2006) -+ - Bug fixes -+ - First version for ppp-2.4.4 -+v0.91 (03-Sep-2006) -+ - Added missing #include for md5.h -+ - Last version for ppp-2.4.3 -+v0.92 (22-Apr-2008) -+ - Fix for openssl 0.9.8 issue with md5 function overload. -+v0.93 (14-Aug-2008) -+ - Make sure 'noauth' option can be used to bypass server certificate verification. -+v0.94 (15-Oct-2008) -+ - Added support for password-protected private keys by (ab)using the 'password' field. -+v0.95 (23-Dec-2009) -+ - First version with OpenSSL engine support. -+v0.96 (27-Jan-2010) -+ - Added fully functional support for OpenSSL engines (PKCS#11) -+ - First version for ppp-2.4.5 -+v0.97 (20-Apr-2010) -+ - Some bug fixes for v0.96 -+ - Added support for entering the password via a plugin. The sample plugin -+ .../pppd/plugins/passprompt.c has been extended with EAP-TLS support. -+ The "old" methods using the password option or the /etc/ppp/openssl.cnf file still work. -+ - Added support for specifying the client CA, certificate and private key on the command-line -+ or via the ppp config file. -+v0.98 (20-Apr-2010) -+ - Fix initialisation bug when using ca/cert/key command-line options. -+ - Last version for ppp-2.4.4 -+v0.99 (05-Oct-2010) -+ - Fix coredump when using multilink option. -+v0.991 (08-Aug-2011) -+ - Fix compilation issue with openssl 1.0. -+v0.992 (01-Dec-2011) -+ - Fix compilation issue with eaptls_check_hook and passwordfd plugin. -+v0.993 (24-Apr-2012) -+ - Fix compilation issue when EAP_TLS=n in pppd/Makefile. -+v0.994 (11-Jun-2012) -+ - Fix compilation issue on Ubuntu 11.10. -+v0.995 (27-May-2014) -+ - Add support for a CRL file using the command-line option 'crl' -+ (prior only 'crl-dir' was supported). -+ - Fix segfault when pkcs11 enginename was not specified correctly. -+ - Fix segfault when client was misconfigured. -+ - Disable SSL Session Ticket support as Windows 8 does not support this. -+v0.996 (28-May-2014) -+ - Fix minor bug where SessionTicket message was printed as 'Unknown SSL3 code 4' -+ - Add EAP-TLS-specific options to pppd.8 manual page. -+ - Updated README.eap-tls file with new option and provide an example. -+v0.997 (19-Jun-2014) -+ - change SSL_OP_NO_TICKETS to SSL_OP_NO_TICKET -+ - fix bug in initialisation code with fragmented packets. -+ -diff -Naur ppp-2.4.7/etc.ppp/eaptls-client ppp-2.4.7-eaptls-mppe-0.999/etc.ppp/eaptls-client ---- ppp-2.4.7/etc.ppp/eaptls-client 1970-01-01 01:00:00.000000000 +0100 -+++ ppp-2.4.7-eaptls-mppe-0.999/etc.ppp/eaptls-client 2017-05-09 14:38:55.129084488 +0200 -@@ -0,0 +1,10 @@ -+# Parameters for authentication using EAP-TLS (client) -+ -+# client name (can be *) -+# server name (can be *) -+# client certificate file (required) -+# server certificate file (optional, if unused put '-') -+# CA certificate file (required) -+# client private key file (required) -+ -+#client server /root/cert/client.crt - /root/cert/ca.crt /root/cert/client.key -diff -Naur ppp-2.4.7/etc.ppp/eaptls-server ppp-2.4.7-eaptls-mppe-0.999/etc.ppp/eaptls-server ---- ppp-2.4.7/etc.ppp/eaptls-server 1970-01-01 01:00:00.000000000 +0100 -+++ ppp-2.4.7-eaptls-mppe-0.999/etc.ppp/eaptls-server 2017-05-09 14:38:55.137084099 +0200 -@@ -0,0 +1,11 @@ -+# Parameters for authentication using EAP-TLS (server) -+ -+# client name (can be *) -+# server name (can be *) -+# client certificate file (optional, if unused put '-') -+# server certificate file (required) -+# CA certificate file (required) -+# server private key file (required) -+# allowed addresses (required, can be *) -+ -+#client server - /root/cert/server.crt /root/cert/ca.crt /root/cert/server.key 192.168.1.0/24 -diff -Naur ppp-2.4.7/etc.ppp/openssl.cnf ppp-2.4.7-eaptls-mppe-0.999/etc.ppp/openssl.cnf ---- ppp-2.4.7/etc.ppp/openssl.cnf 1970-01-01 01:00:00.000000000 +0100 -+++ ppp-2.4.7-eaptls-mppe-0.999/etc.ppp/openssl.cnf 2017-05-09 14:38:55.137084099 +0200 -@@ -0,0 +1,14 @@ -+openssl_conf = openssl_def -+ -+[ openssl_def ] -+engines = engine_section -+ -+[ engine_section ] -+pkcs11 = pkcs11_section -+ -+[ pkcs11_section ] -+engine_id = pkcs11 -+dynamic_path = /usr/lib64/openssl/engines/engine_pkcs11.so -+MODULE_PATH = /usr/lib64/libeTPkcs11.so -+init = 0 -+ -diff -Naur ppp-2.4.7/linux/Makefile.top ppp-2.4.7-eaptls-mppe-0.999/linux/Makefile.top ---- ppp-2.4.7/linux/Makefile.top 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/linux/Makefile.top 2017-05-09 14:38:55.138084052 +0200 -@@ -26,7 +26,7 @@ - cd pppdump; $(MAKE) $(MFLAGS) install - - install-etcppp: $(ETCDIR) $(ETCDIR)/options $(ETCDIR)/pap-secrets \ -- $(ETCDIR)/chap-secrets -+ $(ETCDIR)/chap-secrets $(ETCDIR)/eaptls-server $(ETCDIR)/eaptls-client - - install-devel: - cd pppd; $(MAKE) $(MFLAGS) install-devel -@@ -37,6 +37,10 @@ - $(INSTALL) -c -m 600 etc.ppp/pap-secrets $@ - $(ETCDIR)/chap-secrets: - $(INSTALL) -c -m 600 etc.ppp/chap-secrets $@ -+$(ETCDIR)/eaptls-server: -+ $(INSTALL) -c -m 600 etc.ppp/eaptls-server $@ -+$(ETCDIR)/eaptls-client: -+ $(INSTALL) -c -m 600 etc.ppp/eaptls-client $@ - - $(BINDIR): - $(INSTALL) -d -m 755 $@ -diff -Naur ppp-2.4.7/pppd/Makefile.linux ppp-2.4.7-eaptls-mppe-0.999/pppd/Makefile.linux ---- ppp-2.4.7/pppd/Makefile.linux 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/Makefile.linux 2017-05-09 14:38:55.138084052 +0200 -@@ -76,6 +76,9 @@ - # Use libutil - USE_LIBUTIL=y - -+# Enable EAP-TLS authentication (requires libssl and libcrypto) -+USE_EAPTLS=y -+ - MAXOCTETS=y - - INCLUDE_DIRS= -I../include -@@ -115,6 +118,15 @@ - PPPDOBJS += sha1.o - endif - -+# EAP-TLS -+ifdef USE_EAPTLS -+CFLAGS += -DUSE_EAPTLS=1 -I/usr/kerberos/include -+LIBS += -lssl -lcrypto -+PPPDSRC += eap-tls.c -+HEADERS += eap-tls.h -+PPPDOBJS += eap-tls.o -+endif -+ - ifdef HAS_SHADOW - CFLAGS += -DHAS_SHADOW - #LIBS += -lshadow $(LIBS) -diff -Naur ppp-2.4.7/pppd/auth.c ppp-2.4.7-eaptls-mppe-0.999/pppd/auth.c ---- ppp-2.4.7/pppd/auth.c 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/auth.c 2017-05-09 14:38:55.139084004 +0200 -@@ -109,6 +109,9 @@ - #include "upap.h" - #include "chap-new.h" - #include "eap.h" -+#ifdef USE_EAPTLS -+#include "eap-tls.h" -+#endif - #ifdef CBCP_SUPPORT - #include "cbcp.h" - #endif -@@ -183,6 +186,11 @@ - /* Hook for a plugin to get the CHAP password for authenticating us */ - int (*chap_passwd_hook) __P((char *user, char *passwd)) = NULL; - -+#ifdef USE_EAPTLS -+/* Hook for a plugin to get the EAP-TLS password for authenticating us */ -+int (*eaptls_passwd_hook) __P((char *user, char *passwd)) = NULL; -+#endif -+ - /* Hook for a plugin to say whether it is OK if the peer - refuses to authenticate. */ - int (*null_auth_hook) __P((struct wordlist **paddrs, -@@ -238,6 +246,14 @@ - bool explicit_user = 0; /* Set if "user" option supplied */ - bool explicit_passwd = 0; /* Set if "password" option supplied */ - char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ -+#ifdef USE_EAPTLS -+char *cacert_file = NULL; /* CA certificate file (pem format) */ -+char *cert_file = NULL; /* client certificate file (pem format) */ -+char *privkey_file = NULL; /* client private key file (pem format) */ -+char *crl_dir = NULL; /* directory containing CRL files */ -+char *crl_file = NULL; /* Certificate Revocation List (CRL) file (pem format) */ -+bool need_peer_eap = 0; /* Require peer to authenticate us */ -+#endif - - static char *uafname; /* name of most recent +ua file */ - -@@ -254,6 +270,19 @@ - static int have_chap_secret __P((char *, char *, int, int *)); - static int have_srp_secret __P((char *client, char *server, int need_ip, - int *lacks_ipp)); -+ -+#ifdef USE_EAPTLS -+static int have_eaptls_secret_server -+__P((char *client, char *server, int need_ip, int *lacks_ipp)); -+static int have_eaptls_secret_client __P((char *client, char *server)); -+static int scan_authfile_eaptls __P((FILE * f, char *client, char *server, -+ char *cli_cert, char *serv_cert, -+ char *ca_cert, char *pk, -+ struct wordlist ** addrs, -+ struct wordlist ** opts, -+ char *filename, int flags)); -+#endif -+ - static int ip_addr_check __P((u_int32_t, struct permitted_ip *)); - static int scan_authfile __P((FILE *, char *, char *, char *, - struct wordlist **, struct wordlist **, -@@ -401,6 +430,15 @@ - "Set telephone number(s) which are allowed to connect", - OPT_PRIV | OPT_A2LIST }, - -+#ifdef USE_EAPTLS -+ { "ca", o_string, &cacert_file, "EAP-TLS CA certificate in PEM format" }, -+ { "cert", o_string, &cert_file, "EAP-TLS client certificate in PEM format" }, -+ { "key", o_string, &privkey_file, "EAP-TLS client private key in PEM format" }, -+ { "crl-dir", o_string, &crl_dir, "Use CRLs in directory" }, -+ { "crl", o_string, &crl_file, "Use specific CRL file" }, -+ { "need-peer-eap", o_bool, &need_peer_eap, -+ "Require the peer to authenticate us", 1 }, -+#endif /* USE_EAPTLS */ - { NULL } - }; - -@@ -730,6 +768,9 @@ - lcp_options *wo = &lcp_wantoptions[unit]; - lcp_options *go = &lcp_gotoptions[unit]; - lcp_options *ho = &lcp_hisoptions[unit]; -+#ifdef USE_EAPTLS -+ lcp_options *ao = &lcp_allowoptions[unit]; -+#endif - int i; - struct protent *protp; - -@@ -764,6 +805,22 @@ - } - } - -+#ifdef USE_EAPTLS -+ if (need_peer_eap && !ao->neg_eap) { -+ warn("eap required to authenticate us but no suitable secrets"); -+ lcp_close(unit, "couldn't negotiate eap"); -+ status = EXIT_AUTH_TOPEER_FAILED; -+ return; -+ } -+ -+ if (need_peer_eap && !ho->neg_eap) { -+ warn("peer doesn't want to authenticate us with eap"); -+ lcp_close(unit, "couldn't negotiate eap"); -+ status = EXIT_PEER_AUTH_FAILED; -+ return; -+ } -+#endif -+ - new_phase(PHASE_AUTHENTICATE); - auth = 0; - if (go->neg_eap) { -@@ -1277,6 +1334,15 @@ - our_name, 1, &lacks_ip); - } - -+#ifdef USE_EAPTLS -+ if (!can_auth && wo->neg_eap) { -+ can_auth = -+ have_eaptls_secret_server((explicit_remote ? remote_name : -+ NULL), our_name, 1, &lacks_ip); -+ -+ } -+#endif -+ - if (auth_required && !can_auth && noauth_addrs == NULL) { - if (default_auth) { - option_error( -@@ -1331,7 +1397,11 @@ - passwd[0] != 0 || - (hadchap == 1 || (hadchap == -1 && have_chap_secret(user, - (explicit_remote? remote_name: NULL), 0, NULL))) || -- have_srp_secret(user, (explicit_remote? remote_name: NULL), 0, NULL)); -+ have_srp_secret(user, (explicit_remote? remote_name: NULL), 0, NULL) -+#ifdef USE_EAPTLS -+ || have_eaptls_secret_client(user, (explicit_remote? remote_name: NULL)) -+#endif -+ ); - - hadchap = -1; - if (go->neg_upap && !uselogin && !have_pap_secret(NULL)) -@@ -1346,8 +1416,14 @@ - !have_chap_secret((explicit_remote? remote_name: NULL), our_name, - 1, NULL))) && - !have_srp_secret((explicit_remote? remote_name: NULL), our_name, 1, -- NULL)) -+ NULL) -+#ifdef USE_EAPTLS -+ && !have_eaptls_secret_server((explicit_remote? remote_name: NULL), -+ our_name, 1, NULL) -+#endif -+ ) - go->neg_eap = 0; -+ - } - - -@@ -1707,6 +1783,7 @@ - } - - -+ - /* - * get_secret - open the CHAP secret file and return the secret - * for authenticating the given client on the given server. -@@ -2359,3 +2436,335 @@ - - auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL, 0); - } -+ -+ -+#ifdef USE_EAPTLS -+static int -+have_eaptls_secret_server(client, server, need_ip, lacks_ipp) -+ char *client; -+ char *server; -+ int need_ip; -+ int *lacks_ipp; -+{ -+ FILE *f; -+ int ret; -+ char *filename; -+ struct wordlist *addrs; -+ char servcertfile[MAXWORDLEN]; -+ char clicertfile[MAXWORDLEN]; -+ char cacertfile[MAXWORDLEN]; -+ char pkfile[MAXWORDLEN]; -+ -+ filename = _PATH_EAPTLSSERVFILE; -+ f = fopen(filename, "r"); -+ if (f == NULL) -+ return 0; -+ -+ if (client != NULL && client[0] == 0) -+ client = NULL; -+ else if (server != NULL && server[0] == 0) -+ server = NULL; -+ -+ ret = -+ scan_authfile_eaptls(f, client, server, clicertfile, servcertfile, -+ cacertfile, pkfile, &addrs, NULL, filename, -+ 0); -+ -+ fclose(f); -+ -+/* -+ if (ret >= 0 && !eaptls_init_ssl(1, cacertfile, servcertfile, -+ clicertfile, pkfile)) -+ ret = -1; -+*/ -+ -+ if (ret >= 0 && need_ip && !some_ip_ok(addrs)) { -+ if (lacks_ipp != 0) -+ *lacks_ipp = 1; -+ ret = -1; -+ } -+ if (addrs != 0) -+ free_wordlist(addrs); -+ -+ return ret >= 0; -+} -+ -+ -+static int -+have_eaptls_secret_client(client, server) -+ char *client; -+ char *server; -+{ -+ FILE *f; -+ int ret; -+ char *filename; -+ struct wordlist *addrs = NULL; -+ char servcertfile[MAXWORDLEN]; -+ char clicertfile[MAXWORDLEN]; -+ char cacertfile[MAXWORDLEN]; -+ char pkfile[MAXWORDLEN]; -+ -+ if (client != NULL && client[0] == 0) -+ client = NULL; -+ else if (server != NULL && server[0] == 0) -+ server = NULL; -+ -+ if (cacert_file && cert_file && privkey_file) -+ return 1; -+ -+ filename = _PATH_EAPTLSCLIFILE; -+ f = fopen(filename, "r"); -+ if (f == NULL) -+ return 0; -+ -+ ret = -+ scan_authfile_eaptls(f, client, server, clicertfile, servcertfile, -+ cacertfile, pkfile, &addrs, NULL, filename, -+ 0); -+ fclose(f); -+ -+/* -+ if (ret >= 0 && !eaptls_init_ssl(0, cacertfile, clicertfile, -+ servcertfile, pkfile)) -+ ret = -1; -+*/ -+ -+ if (addrs != 0) -+ free_wordlist(addrs); -+ -+ return ret >= 0; -+} -+ -+ -+static int -+scan_authfile_eaptls(f, client, server, cli_cert, serv_cert, ca_cert, pk, -+ addrs, opts, filename, flags) -+ FILE *f; -+ char *client; -+ char *server; -+ char *cli_cert; -+ char *serv_cert; -+ char *ca_cert; -+ char *pk; -+ struct wordlist **addrs; -+ struct wordlist **opts; -+ char *filename; -+ int flags; -+{ -+ int newline; -+ int got_flag, best_flag; -+ struct wordlist *ap, *addr_list, *alist, **app; -+ char word[MAXWORDLEN]; -+ -+ if (addrs != NULL) -+ *addrs = NULL; -+ if (opts != NULL) -+ *opts = NULL; -+ addr_list = NULL; -+ if (!getword(f, word, &newline, filename)) -+ return -1; /* file is empty??? */ -+ newline = 1; -+ best_flag = -1; -+ for (;;) { -+ /* -+ * Skip until we find a word at the start of a line. -+ */ -+ while (!newline && getword(f, word, &newline, filename)); -+ if (!newline) -+ break; /* got to end of file */ -+ -+ /* -+ * Got a client - check if it's a match or a wildcard. -+ */ -+ got_flag = 0; -+ if (client != NULL && strcmp(word, client) != 0 && !ISWILD(word)) { -+ newline = 0; -+ continue; -+ } -+ if (!ISWILD(word)) -+ got_flag = NONWILD_CLIENT; -+ -+ /* -+ * Now get a server and check if it matches. -+ */ -+ if (!getword(f, word, &newline, filename)) -+ break; -+ if (newline) -+ continue; -+ if (!ISWILD(word)) { -+ if (server != NULL && strcmp(word, server) != 0) -+ continue; -+ got_flag |= NONWILD_SERVER; -+ } -+ -+ /* -+ * Got some sort of a match - see if it's better than what -+ * we have already. -+ */ -+ if (got_flag <= best_flag) -+ continue; -+ -+ /* -+ * Get the cli_cert -+ */ -+ if (!getword(f, word, &newline, filename)) -+ break; -+ if (newline) -+ continue; -+ if (strcmp(word, "-") != 0) { -+ strlcpy(cli_cert, word, MAXWORDLEN); -+ } else -+ cli_cert[0] = 0; -+ -+ /* -+ * Get serv_cert -+ */ -+ if (!getword(f, word, &newline, filename)) -+ break; -+ if (newline) -+ continue; -+ if (strcmp(word, "-") != 0) { -+ strlcpy(serv_cert, word, MAXWORDLEN); -+ } else -+ serv_cert[0] = 0; -+ -+ /* -+ * Get ca_cert -+ */ -+ if (!getword(f, word, &newline, filename)) -+ break; -+ if (newline) -+ continue; -+ strlcpy(ca_cert, word, MAXWORDLEN); -+ -+ /* -+ * Get pk -+ */ -+ if (!getword(f, word, &newline, filename)) -+ break; -+ if (newline) -+ continue; -+ strlcpy(pk, word, MAXWORDLEN); -+ -+ -+ /* -+ * Now read address authorization info and make a wordlist. -+ */ -+ app = &alist; -+ for (;;) { -+ if (!getword(f, word, &newline, filename) || newline) -+ break; -+ ap = (struct wordlist *) -+ malloc(sizeof(struct wordlist) + strlen(word) + 1); -+ if (ap == NULL) -+ novm("authorized addresses"); -+ ap->word = (char *) (ap + 1); -+ strcpy(ap->word, word); -+ *app = ap; -+ app = &ap->next; -+ } -+ *app = NULL; -+ /* -+ * This is the best so far; remember it. -+ */ -+ best_flag = got_flag; -+ if (addr_list) -+ free_wordlist(addr_list); -+ addr_list = alist; -+ -+ if (!newline) -+ break; -+ } -+ -+ /* scan for a -- word indicating the start of options */ -+ for (app = &addr_list; (ap = *app) != NULL; app = &ap->next) -+ if (strcmp(ap->word, "--") == 0) -+ break; -+ /* ap = start of options */ -+ if (ap != NULL) { -+ ap = ap->next; /* first option */ -+ free(*app); /* free the "--" word */ -+ *app = NULL; /* terminate addr list */ -+ } -+ if (opts != NULL) -+ *opts = ap; -+ else if (ap != NULL) -+ free_wordlist(ap); -+ if (addrs != NULL) -+ *addrs = addr_list; -+ else if (addr_list != NULL) -+ free_wordlist(addr_list); -+ -+ return best_flag; -+} -+ -+ -+int -+get_eaptls_secret(unit, client, server, clicertfile, servcertfile, -+ cacertfile, pkfile, am_server) -+ int unit; -+ char *client; -+ char *server; -+ char *clicertfile; -+ char *servcertfile; -+ char *cacertfile; -+ char *pkfile; -+ int am_server; -+{ -+ FILE *fp; -+ int ret; -+ char *filename = NULL; -+ struct wordlist *addrs = NULL; -+ struct wordlist *opts = NULL; -+ -+ /* in client mode the ca+cert+privkey can also be specified as options */ -+ if (!am_server && cacert_file && cert_file && privkey_file ) -+ { -+ strlcpy( clicertfile, cert_file, MAXWORDLEN ); -+ strlcpy( cacertfile, cacert_file, MAXWORDLEN ); -+ strlcpy( pkfile, privkey_file, MAXWORDLEN ); -+ servcertfile[0] = '\0'; -+ } -+ else -+ { -+ filename = (am_server ? _PATH_EAPTLSSERVFILE : _PATH_EAPTLSCLIFILE); -+ addrs = NULL; -+ -+ fp = fopen(filename, "r"); -+ if (fp == NULL) -+ { -+ error("Can't open eap-tls secret file %s: %m", filename); -+ return 0; -+ } -+ -+ check_access(fp, filename); -+ -+ ret = scan_authfile_eaptls(fp, client, server, clicertfile, servcertfile, -+ cacertfile, pkfile, &addrs, &opts, filename, 0); -+ -+ fclose(fp); -+ -+ if (ret < 0) return 0; -+ } -+ -+ if (eaptls_passwd_hook) -+ { -+ dbglog( "Calling eaptls password hook" ); -+ if ( (*eaptls_passwd_hook)(pkfile, passwd) < 0) -+ { -+ error("Unable to obtain EAP-TLS password for %s (%s) from plugin", -+ client, pkfile); -+ return 0; -+ } -+ } -+ if (am_server) -+ set_allowed_addrs(unit, addrs, opts); -+ else if (opts != NULL) -+ free_wordlist(opts); -+ if (addrs != NULL) -+ free_wordlist(addrs); -+ -+ return 1; -+} -+#endif -+ -diff -Naur ppp-2.4.7/pppd/ccp.c ppp-2.4.7-eaptls-mppe-0.999/pppd/ccp.c ---- ppp-2.4.7/pppd/ccp.c 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/ccp.c 2017-05-09 14:38:55.148083482 +0200 -@@ -540,6 +540,9 @@ - if (go->mppe) { - ccp_options *ao = &ccp_allowoptions[f->unit]; - int auth_mschap_bits = auth_done[f->unit]; -+#ifdef USE_EAPTLS -+ int auth_eap_bits = auth_done[f->unit]; -+#endif - int numbits; - - /* -@@ -567,8 +570,23 @@ - lcp_close(f->unit, "MPPE required but not available"); - return; - } -+ -+#ifdef USE_EAPTLS -+ /* -+ * MPPE is also possible in combination with EAP-TLS. -+ * It is not possible to detect if we're doing EAP or EAP-TLS -+ * at this stage, hence we accept all forms of EAP. If TLS is -+ * not used then the MPPE keys will not be derived anyway. -+ */ -+ /* Leave only the eap auth bits set */ -+ auth_eap_bits &= (EAP_WITHPEER | EAP_PEER ); -+ -+ if ((numbits == 0) && (auth_eap_bits == 0)) { -+ error("MPPE required, but MS-CHAP[v2] nor EAP-TLS auth are performed."); -+#else - if (!numbits) { -- error("MPPE required, but MS-CHAP[v2] auth not performed."); -+ error("MPPE required, but MS-CHAP[v2] auth not performed."); -+#endif - lcp_close(f->unit, "MPPE required but not available"); - return; - } -diff -Naur ppp-2.4.7/pppd/chap-md5.c ppp-2.4.7-eaptls-mppe-0.999/pppd/chap-md5.c ---- ppp-2.4.7/pppd/chap-md5.c 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/chap-md5.c 2017-05-09 14:38:55.148083482 +0200 -@@ -36,7 +36,11 @@ - #include "chap-new.h" - #include "chap-md5.h" - #include "magic.h" -+#ifdef USE_EAPTLS -+#include "eap-tls.h" -+#else - #include "md5.h" -+#endif /* USE_EAPTLS */ - - #define MD5_HASH_SIZE 16 - #define MD5_MIN_CHALLENGE 16 -diff -Naur ppp-2.4.7/pppd/eap-tls.c ppp-2.4.7-eaptls-mppe-0.999/pppd/eap-tls.c ---- ppp-2.4.7/pppd/eap-tls.c 1970-01-01 01:00:00.000000000 +0100 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/eap-tls.c 2017-05-11 10:43:00.345739124 +0200 -@@ -0,0 +1,1308 @@ -+/* -+ * eap-tls.c - EAP-TLS implementation for PPP -+ * -+ * Copyright (c) Beniamino Galvani 2005 All rights reserved. -+ * -+ * Redistribution and use in source and binary forms, with or without -+ * modification, are permitted provided that the following conditions -+ * are met: -+ * -+ * 1. Redistributions of source code must retain the above copyright -+ * notice, this list of conditions and the following disclaimer. -+ * -+ * 2. Redistributions in binary form must reproduce the above copyright -+ * notice, this list of conditions and the following disclaimer in -+ * the documentation and/or other materials provided with the -+ * distribution. -+ * -+ * 3. The name(s) of the authors of this software must not be used to -+ * endorse or promote products derived from this software without -+ * prior written permission. -+ * -+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO -+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY -+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY -+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN -+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING -+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -+ * -+ */ -+ -+#include <string.h> -+#include <unistd.h> -+#include <sys/types.h> -+#include <sys/stat.h> -+#include <fcntl.h> -+ -+#include <openssl/conf.h> -+#include <openssl/engine.h> -+#include <openssl/hmac.h> -+#include <openssl/err.h> -+#include <openssl/x509v3.h> -+ -+#include "pppd.h" -+#include "eap.h" -+#include "eap-tls.h" -+#include "fsm.h" -+#include "lcp.h" -+#include "pathnames.h" -+ -+/* The openssl configuration file and engines can be loaded only once */ -+static CONF *ssl_config = NULL; -+static ENGINE *cert_engine = NULL; -+static ENGINE *pkey_engine = NULL; -+ -+#ifdef MPPE -+ -+#if OPENSSL_VERSION_NUMBER < 0x10100000L -+ -+/* -+ * https://wiki.openssl.org/index.php/1.1_API_Changes -+ * tries to provide some guidance but ultimately falls short. -+ */ -+ -+static void HMAC_CTX_free(HMAC_CTX *ctx) -+{ -+ if (ctx != NULL) { -+ HMAC_CTX_cleanup(ctx); -+ OPENSSL_free(ctx); -+ } -+} -+ -+static HMAC_CTX *HMAC_CTX_new(void) -+{ -+ HMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx)); -+ if (ctx != NULL) -+ HMAC_CTX_init(ctx); -+ return ctx; -+} -+ -+/* -+ * These were basically jacked directly from the OpenSSL tree -+ * without adjustments. -+ */ -+ -+static size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, -+ size_t outlen) -+{ -+ if (outlen == 0) -+ return sizeof(ssl->s3->client_random); -+ if (outlen > sizeof(ssl->s3->client_random)) -+ outlen = sizeof(ssl->s3->client_random); -+ memcpy(out, ssl->s3->client_random, outlen); -+ return outlen; -+} -+ -+static size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, -+ size_t outlen) -+{ -+ if (outlen == 0) -+ return sizeof(ssl->s3->server_random); -+ if (outlen > sizeof(ssl->s3->server_random)) -+ outlen = sizeof(ssl->s3->server_random); -+ memcpy(out, ssl->s3->server_random, outlen); -+ return outlen; -+} -+ -+static size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, -+ unsigned char *out, size_t outlen) -+{ -+ if (outlen == 0) -+ return session->master_key_length; -+ if (outlen > session->master_key_length) -+ outlen = session->master_key_length; -+ memcpy(out, session->master_key, outlen); -+ return outlen; -+} -+ -+/* Avoid a deprecated warning in OpenSSL 1.1 whilst still allowing to build against 1.0.x */ -+#define TLS_method TLSv1_method -+ -+#endif /* OPENSSL_VERSION_NUMBER < 0x10100000L */ -+ -+/* -+ * TLS PRF from RFC 2246 -+ */ -+static void P_hash(const EVP_MD *evp_md, -+ const unsigned char *secret, unsigned int secret_len, -+ const unsigned char *seed, unsigned int seed_len, -+ unsigned char *out, unsigned int out_len) -+{ -+ HMAC_CTX *ctx_a, *ctx_out; -+ unsigned char a[HMAC_MAX_MD_CBLOCK]; -+ unsigned int size; -+ -+ ctx_a = HMAC_CTX_new(); -+ ctx_out = HMAC_CTX_new(); -+ HMAC_Init_ex(ctx_a, secret, secret_len, evp_md, NULL); -+ HMAC_Init_ex(ctx_out, secret, secret_len, evp_md, NULL); -+ -+ size = HMAC_size(ctx_out); -+ -+ /* Calculate A(1) */ -+ HMAC_Update(ctx_a, seed, seed_len); -+ HMAC_Final(ctx_a, a, NULL); -+ -+ while (1) { -+ /* Calculate next part of output */ -+ HMAC_Update(ctx_out, a, size); -+ HMAC_Update(ctx_out, seed, seed_len); -+ -+ /* Check if last part */ -+ if (out_len < size) { -+ HMAC_Final(ctx_out, a, NULL); -+ memcpy(out, a, out_len); -+ break; -+ } -+ -+ /* Place digest in output buffer */ -+ HMAC_Final(ctx_out, out, NULL); -+ HMAC_Init_ex(ctx_out, NULL, 0, NULL, NULL); -+ out += size; -+ out_len -= size; -+ -+ /* Calculate next A(i) */ -+ HMAC_Init_ex(ctx_a, NULL, 0, NULL, NULL); -+ HMAC_Update(ctx_a, a, size); -+ HMAC_Final(ctx_a, a, NULL); -+ } -+ -+ HMAC_CTX_free(ctx_a); -+ HMAC_CTX_free(ctx_out); -+ memset(a, 0, sizeof(a)); -+} -+ -+static void PRF(const unsigned char *secret, unsigned int secret_len, -+ const unsigned char *seed, unsigned int seed_len, -+ unsigned char *out, unsigned char *buf, unsigned int out_len) -+{ -+ unsigned int i; -+ unsigned int len = (secret_len + 1) / 2; -+ const unsigned char *s1 = secret; -+ const unsigned char *s2 = secret + (secret_len - len); -+ -+ P_hash(EVP_md5(), s1, len, seed, seed_len, out, out_len); -+ P_hash(EVP_sha1(), s2, len, seed, seed_len, buf, out_len); -+ -+ for (i=0; i < out_len; i++) { -+ out[i] ^= buf[i]; -+ } -+} -+ -+#define EAPTLS_MPPE_KEY_LEN 32 -+ -+/* -+ * Generate keys according to RFC 2716 and add to reply -+ */ -+void eaptls_gen_mppe_keys(struct eaptls_session *ets, const char *prf_label, -+ int client) -+{ -+ unsigned char out[4*EAPTLS_MPPE_KEY_LEN], buf[4*EAPTLS_MPPE_KEY_LEN]; -+ unsigned char seed[64 + 2*SSL3_RANDOM_SIZE]; -+ unsigned char *p = seed; -+ SSL *s = ets->ssl; -+ size_t prf_size; -+ unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH]; -+ size_t master_key_length; -+ -+ prf_size = strlen(prf_label); -+ -+ memcpy(p, prf_label, prf_size); -+ p += prf_size; -+ -+ prf_size += SSL_get_client_random(s, p, SSL3_RANDOM_SIZE); -+ p += SSL3_RANDOM_SIZE; -+ -+ prf_size += SSL_get_server_random(s, p, SSL3_RANDOM_SIZE); -+ -+ master_key_length = SSL_SESSION_get_master_key(SSL_get_session(s), master_key, -+ sizeof(master_key)); -+ PRF(master_key, master_key_length, seed, prf_size, out, buf, sizeof(out)); -+ -+ /* -+ * We now have the master send and receive keys. -+ * From these, generate the session send and receive keys. -+ * (see RFC3079 / draft-ietf-pppext-mppe-keys-03.txt for details) -+ */ -+ if (client) -+ { -+ p = out; -+ BCOPY( p, mppe_send_key, sizeof(mppe_send_key) ); -+ p += EAPTLS_MPPE_KEY_LEN; -+ BCOPY( p, mppe_recv_key, sizeof(mppe_recv_key) ); -+ } -+ else -+ { -+ p = out; -+ BCOPY( p, mppe_recv_key, sizeof(mppe_recv_key) ); -+ p += EAPTLS_MPPE_KEY_LEN; -+ BCOPY( p, mppe_send_key, sizeof(mppe_send_key) ); -+ } -+ -+ mppe_keys_set = 1; -+} -+ -+#endif -+ -+void log_ssl_errors( void ) -+{ -+ unsigned long ssl_err = ERR_get_error(); -+ -+ if (ssl_err != 0) -+ dbglog("EAP-TLS SSL error stack:"); -+ while (ssl_err != 0) { -+ dbglog( ERR_error_string( ssl_err, NULL ) ); -+ ssl_err = ERR_get_error(); -+ } -+} -+ -+ -+int password_callback (char *buf, int size, int rwflag, void *u) -+{ -+ if (buf) -+ { -+ strncpy (buf, passwd, size); -+ return strlen (buf); -+ } -+ return 0; -+} -+ -+ -+CONF *eaptls_ssl_load_config( void ) -+{ -+ CONF *config; -+ int ret_code; -+ long error_line = 33; -+ -+ config = NCONF_new( NULL ); -+ dbglog( "Loading OpenSSL config file" ); -+ ret_code = NCONF_load( config, _PATH_OPENSSLCONFFILE, &error_line ); -+ if (ret_code == 0) -+ { -+ warn( "EAP-TLS: Error in OpenSSL config file %s at line %d", _PATH_OPENSSLCONFFILE, error_line ); -+ NCONF_free( config ); -+ config = NULL; -+ ERR_clear_error(); -+ } -+ -+ dbglog( "Loading OpenSSL built-ins" ); -+ ENGINE_load_builtin_engines(); -+ OPENSSL_load_builtin_modules(); -+ -+ dbglog( "Loading OpenSSL configured modules" ); -+ if (CONF_modules_load( config, NULL, 0 ) <= 0 ) -+ { -+ warn( "EAP-TLS: Error loading OpenSSL modules" ); -+ log_ssl_errors(); -+ config = NULL; -+ } -+ -+ return config; -+} -+ -+ENGINE *eaptls_ssl_load_engine( char *engine_name ) -+{ -+ ENGINE *e = NULL; -+ -+ dbglog( "Enabling OpenSSL auto engines" ); -+ ENGINE_register_all_complete(); -+ -+ dbglog( "Loading OpenSSL '%s' engine support", engine_name ); -+ e = ENGINE_by_id( engine_name ); -+ if (!e) -+ { -+ dbglog( "EAP-TLS: Cannot load '%s' engine support, trying 'dynamic'", engine_name ); -+ e = ENGINE_by_id( "dynamic" ); -+ if (e) -+ { -+ if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine_name, 0) -+ || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) -+ { -+ warn( "EAP-TLS: Error loading dynamic engine '%s'", engine_name ); -+ log_ssl_errors(); -+ ENGINE_free(e); -+ e = NULL; -+ } -+ } -+ else -+ { -+ warn( "EAP-TLS: Cannot load dynamic engine support" ); -+ } -+ } -+ -+ if (e) -+ { -+ dbglog( "Initialising engine" ); -+ if(!ENGINE_set_default(e, ENGINE_METHOD_ALL)) -+ { -+ warn( "EAP-TLS: Cannot use that engine" ); -+ log_ssl_errors(); -+ ENGINE_free(e); -+ e = NULL; -+ } -+ } -+ -+ return e; -+} -+ -+/* -+ * Initialize the SSL stacks and tests if certificates, key and crl -+ * for client or server use can be loaded. -+ */ -+SSL_CTX *eaptls_init_ssl(int init_server, char *cacertfile, -+ char *certfile, char *peer_certfile, char *privkeyfile) -+{ -+ char *cert_engine_name = NULL; -+ char *cert_identifier = NULL; -+ char *pkey_engine_name = NULL; -+ char *pkey_identifier = NULL; -+ SSL_CTX *ctx; -+ X509_STORE *certstore; -+ X509_LOOKUP *lookup; -+ X509 *tmp; -+ -+ /* -+ * Without these can't continue -+ */ -+ if (!cacertfile[0]) -+ { -+ error("EAP-TLS: CA certificate missing"); -+ return NULL; -+ } -+ -+ if (!certfile[0]) -+ { -+ error("EAP-TLS: User certificate missing"); -+ return NULL; -+ } -+ -+ if (!privkeyfile[0]) -+ { -+ error("EAP-TLS: User private key missing"); -+ return NULL; -+ } -+ -+ SSL_library_init(); -+ SSL_load_error_strings(); -+ -+ ctx = SSL_CTX_new(TLS_method()); -+ -+ if (!ctx) { -+ error("EAP-TLS: Cannot initialize SSL CTX context"); -+ goto fail; -+ } -+ -+ /* if the certificate filename is of the form engine:id. e.g. -+ pkcs11:12345 -+ then we try to load and use this engine. -+ If the certificate filename starts with a / or . then we -+ ALWAYS assume it is a file and not an engine/pkcs11 identifier -+ */ -+ if ( index( certfile, '/' ) == NULL && index( certfile, '.') == NULL ) -+ { -+ cert_identifier = index( certfile, ':' ); -+ -+ if (cert_identifier) -+ { -+ cert_engine_name = certfile; -+ *cert_identifier = '\0'; -+ cert_identifier++; -+ -+ dbglog( "Found certificate engine '%s'", cert_engine_name ); -+ dbglog( "Found certificate identifier '%s'", cert_identifier ); -+ } -+ } -+ -+ /* if the privatekey filename is of the form engine:id. e.g. -+ pkcs11:12345 -+ then we try to load and use this engine. -+ If the privatekey filename starts with a / or . then we -+ ALWAYS assume it is a file and not an engine/pkcs11 identifier -+ */ -+ if ( index( privkeyfile, '/' ) == NULL && index( privkeyfile, '.') == NULL ) -+ { -+ pkey_identifier = index( privkeyfile, ':' ); -+ -+ if (pkey_identifier) -+ { -+ pkey_engine_name = privkeyfile; -+ *pkey_identifier = '\0'; -+ pkey_identifier++; -+ -+ dbglog( "Found privatekey engine '%s'", pkey_engine_name ); -+ dbglog( "Found privatekey identifier '%s'", pkey_identifier ); -+ } -+ } -+ -+ if (cert_identifier && pkey_identifier) -+ { -+ if (strlen( cert_identifier ) == 0) -+ { -+ if (strlen( pkey_identifier ) == 0) -+ error( "EAP-TLS: both the certificate and privatekey identifiers are missing!" ); -+ else -+ { -+ dbglog( "Substituting privatekey identifier for certificate identifier" ); -+ cert_identifier = pkey_identifier; -+ } -+ } -+ else -+ { -+ if (strlen( pkey_identifier ) == 0) -+ { -+ dbglog( "Substituting certificate identifier for privatekey identifier" ); -+ pkey_identifier = cert_identifier; -+ } -+ } -+ -+ } -+ -+ /* load the openssl config file only once */ -+ if (!ssl_config) -+ { -+ if (cert_engine_name || pkey_engine_name) -+ ssl_config = eaptls_ssl_load_config(); -+ -+ if (ssl_config && cert_engine_name) -+ cert_engine = eaptls_ssl_load_engine( cert_engine_name ); -+ -+ if (ssl_config && pkey_engine_name) -+ { -+ /* don't load the same engine twice */ -+ if ( cert_engine && strcmp( cert_engine_name, pkey_engine_name) == 0 ) -+ pkey_engine = cert_engine; -+ else -+ pkey_engine = eaptls_ssl_load_engine( pkey_engine_name ); -+ } -+ } -+ -+ SSL_CTX_set_default_passwd_cb (ctx, password_callback); -+ -+ if (!SSL_CTX_load_verify_locations(ctx, cacertfile, NULL)) -+ { -+ error("EAP-TLS: Cannot load or verify CA file %s", cacertfile); -+ goto fail; -+ } -+ -+ if (init_server) -+ SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(cacertfile)); -+ -+ if (cert_engine) -+ { -+ struct -+ { -+ const char *s_slot_cert_id; -+ X509 *cert; -+ } cert_info; -+ -+ cert_info.s_slot_cert_id = cert_identifier; -+ cert_info.cert = NULL; -+ -+ if (!ENGINE_ctrl_cmd( cert_engine, "LOAD_CERT_CTRL", 0, &cert_info, NULL, 0 ) ) -+ { -+ error( "EAP-TLS: Error loading certificate with id '%s' from engine", cert_identifier ); -+ goto fail; -+ } -+ -+ if (cert_info.cert) -+ { -+ dbglog( "Got the certificate, adding it to SSL context" ); -+ dbglog( "subject = %s", X509_NAME_oneline( X509_get_subject_name( cert_info.cert ), NULL, 0 ) ); -+ if (SSL_CTX_use_certificate(ctx, cert_info.cert) <= 0) -+ { -+ error("EAP-TLS: Cannot use PKCS11 certificate %s", cert_identifier); -+ goto fail; -+ } -+ } -+ else -+ { -+ warn("EAP-TLS: Cannot load PKCS11 key %s", cert_identifier); -+ log_ssl_errors(); -+ } -+ } -+ else -+ { -+ if (!SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM)) -+ { -+ error( "EAP-TLS: Cannot use public certificate %s", certfile ); -+ goto fail; -+ } -+ } -+ -+ if (pkey_engine) -+ { -+ EVP_PKEY *pkey = NULL; -+ PW_CB_DATA cb_data; -+ -+ cb_data.password = passwd; -+ cb_data.prompt_info = pkey_identifier; -+ -+ dbglog( "Loading private key '%s' from engine", pkey_identifier ); -+ pkey = ENGINE_load_private_key(pkey_engine, pkey_identifier, NULL, &cb_data); -+ if (pkey) -+ { -+ dbglog( "Got the private key, adding it to SSL context" ); -+ if (SSL_CTX_use_PrivateKey(ctx, pkey) <= 0) -+ { -+ error("EAP-TLS: Cannot use PKCS11 key %s", pkey_identifier); -+ goto fail; -+ } -+ } -+ else -+ { -+ warn("EAP-TLS: Cannot load PKCS11 key %s", pkey_identifier); -+ log_ssl_errors(); -+ } -+ } -+ else -+ { -+ if (!SSL_CTX_use_PrivateKey_file(ctx, privkeyfile, SSL_FILETYPE_PEM)) -+ { -+ error("EAP-TLS: Cannot use private key %s", privkeyfile); -+ goto fail; -+ } -+ } -+ -+ if (SSL_CTX_check_private_key(ctx) != 1) { -+ error("EAP-TLS: Private key %s fails security check", privkeyfile); -+ goto fail; -+ } -+ -+ /* Explicitly set the NO_TICKETS flag to support Win7/Win8 clients */ -+ SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 -+#ifdef SSL_OP_NO_TICKET -+ | SSL_OP_NO_TICKET -+#endif -+); -+ SSL_CTX_set_verify_depth(ctx, 5); -+ SSL_CTX_set_verify(ctx, -+ SSL_VERIFY_PEER | -+ SSL_VERIFY_FAIL_IF_NO_PEER_CERT, -+ &ssl_verify_callback); -+ -+ if (crl_dir) { -+ if (!(certstore = SSL_CTX_get_cert_store(ctx))) { -+ error("EAP-TLS: Failed to get certificate store"); -+ goto fail; -+ } -+ -+ if (!(lookup = -+ X509_STORE_add_lookup(certstore, X509_LOOKUP_hash_dir()))) { -+ error("EAP-TLS: Store lookup for CRL failed"); -+ -+ goto fail; -+ } -+ -+ X509_LOOKUP_add_dir(lookup, crl_dir, X509_FILETYPE_PEM); -+ X509_STORE_set_flags(certstore, X509_V_FLAG_CRL_CHECK); -+ } -+ -+ if (crl_file) { -+ FILE *fp = NULL; -+ X509_CRL *crl = NULL; -+ -+ fp = fopen(crl_file, "r"); -+ if (!fp) { -+ error("EAP-TLS: Cannot open CRL file '%s'", crl_file); -+ goto fail; -+ } -+ -+ crl = PEM_read_X509_CRL(fp, NULL, NULL, NULL); -+ if (!crl) { -+ error("EAP-TLS: Cannot read CRL file '%s'", crl_file); -+ goto fail; -+ } -+ -+ if (!(certstore = SSL_CTX_get_cert_store(ctx))) { -+ error("EAP-TLS: Failed to get certificate store"); -+ goto fail; -+ } -+ if (!X509_STORE_add_crl(certstore, crl)) { -+ error("EAP-TLS: Cannot add CRL to certificate store"); -+ goto fail; -+ } -+ X509_STORE_set_flags(certstore, X509_V_FLAG_CRL_CHECK); -+ -+ } -+ -+ /* -+ * If a peer certificate file was specified, it must be valid, else fail -+ */ -+ if (peer_certfile[0]) { -+ if (!(tmp = get_X509_from_file(peer_certfile))) { -+ error("EAP-TLS: Error loading client certificate from file %s", -+ peer_certfile); -+ goto fail; -+ } -+ X509_free(tmp); -+ } -+ -+ return ctx; -+ -+fail: -+ log_ssl_errors(); -+ SSL_CTX_free(ctx); -+ return NULL; -+} -+ -+/* -+ * Determine the maximum packet size by looking at the LCP handshake -+ */ -+ -+int eaptls_get_mtu(int unit) -+{ -+ int mtu, mru; -+ -+ lcp_options *wo = &lcp_wantoptions[unit]; -+ lcp_options *go = &lcp_gotoptions[unit]; -+ lcp_options *ho = &lcp_hisoptions[unit]; -+ lcp_options *ao = &lcp_allowoptions[unit]; -+ -+ mtu = ho->neg_mru? ho->mru: PPP_MRU; -+ mru = go->neg_mru? MAX(wo->mru, go->mru): PPP_MRU; -+ mtu = MIN(MIN(mtu, mru), ao->mru)- PPP_HDRLEN - 10; -+ -+ dbglog("MTU = %d", mtu); -+ return mtu; -+} -+ -+ -+/* -+ * Init the ssl handshake (server mode) -+ */ -+int eaptls_init_ssl_server(eap_state * esp) -+{ -+ struct eaptls_session *ets; -+ char servcertfile[MAXWORDLEN]; -+ char clicertfile[MAXWORDLEN]; -+ char cacertfile[MAXWORDLEN]; -+ char pkfile[MAXWORDLEN]; -+ /* -+ * Allocate new eaptls session -+ */ -+ esp->es_server.ea_session = malloc(sizeof(struct eaptls_session)); -+ if (!esp->es_server.ea_session) -+ fatal("Allocation error"); -+ ets = esp->es_server.ea_session; -+ -+ if (!esp->es_server.ea_peer) { -+ error("EAP-TLS: Error: client name not set (BUG)"); -+ return 0; -+ } -+ -+ strncpy(ets->peer, esp->es_server.ea_peer, MAXWORDLEN); -+ -+ dbglog( "getting eaptls secret" ); -+ if (!get_eaptls_secret(esp->es_unit, esp->es_server.ea_peer, -+ esp->es_server.ea_name, clicertfile, -+ servcertfile, cacertfile, pkfile, 1)) { -+ error( "EAP-TLS: Cannot get secret/password for client \"%s\", server \"%s\"", -+ esp->es_server.ea_peer, esp->es_server.ea_name ); -+ return 0; -+ } -+ -+ ets->mtu = eaptls_get_mtu(esp->es_unit); -+ -+ ets->ctx = eaptls_init_ssl(1, cacertfile, servcertfile, clicertfile, pkfile); -+ if (!ets->ctx) -+ goto fail; -+ -+ if (!(ets->ssl = SSL_new(ets->ctx))) -+ goto fail; -+ -+ /* -+ * Set auto-retry to avoid timeouts on BIO_read -+ */ -+ SSL_set_mode(ets->ssl, SSL_MODE_AUTO_RETRY); -+ -+ /* -+ * Initialize the BIOs we use to read/write to ssl engine -+ */ -+ ets->into_ssl = BIO_new(BIO_s_mem()); -+ ets->from_ssl = BIO_new(BIO_s_mem()); -+ SSL_set_bio(ets->ssl, ets->into_ssl, ets->from_ssl); -+ -+ SSL_set_msg_callback(ets->ssl, ssl_msg_callback); -+ SSL_set_msg_callback_arg(ets->ssl, ets); -+ -+ /* -+ * Attach the session struct to the connection, so we can later -+ * retrieve it when doing certificate verification -+ */ -+ SSL_set_ex_data(ets->ssl, 0, ets); -+ -+ SSL_set_accept_state(ets->ssl); -+ -+ ets->data = NULL; -+ ets->datalen = 0; -+ ets->alert_sent = 0; -+ ets->alert_recv = 0; -+ -+ /* -+ * If we specified the client certificate file, store it in ets->peercertfile, -+ * so we can check it later in ssl_verify_callback() -+ */ -+ if (clicertfile[0]) -+ strncpy(&ets->peercertfile[0], clicertfile, MAXWORDLEN); -+ else -+ ets->peercertfile[0] = 0; -+ -+ return 1; -+ -+fail: -+ SSL_CTX_free(ets->ctx); -+ return 0; -+} -+ -+/* -+ * Init the ssl handshake (client mode) -+ */ -+int eaptls_init_ssl_client(eap_state * esp) -+{ -+ struct eaptls_session *ets; -+ char servcertfile[MAXWORDLEN]; -+ char clicertfile[MAXWORDLEN]; -+ char cacertfile[MAXWORDLEN]; -+ char pkfile[MAXWORDLEN]; -+ -+ /* -+ * Allocate new eaptls session -+ */ -+ esp->es_client.ea_session = malloc(sizeof(struct eaptls_session)); -+ if (!esp->es_client.ea_session) -+ fatal("Allocation error"); -+ ets = esp->es_client.ea_session; -+ -+ /* -+ * If available, copy server name in ets; it will be used in cert -+ * verify -+ */ -+ if (esp->es_client.ea_peer) -+ strncpy(ets->peer, esp->es_client.ea_peer, MAXWORDLEN); -+ else -+ ets->peer[0] = 0; -+ -+ ets->mtu = eaptls_get_mtu(esp->es_unit); -+ -+ dbglog( "calling get_eaptls_secret" ); -+ if (!get_eaptls_secret(esp->es_unit, esp->es_client.ea_name, -+ ets->peer, clicertfile, -+ servcertfile, cacertfile, pkfile, 0)) { -+ error( "EAP-TLS: Cannot get secret/password for client \"%s\", server \"%s\"", -+ esp->es_client.ea_name, ets->peer ); -+ return 0; -+ } -+ -+ dbglog( "calling eaptls_init_ssl" ); -+ ets->ctx = eaptls_init_ssl(0, cacertfile, clicertfile, servcertfile, pkfile); -+ if (!ets->ctx) -+ goto fail; -+ -+ ets->ssl = SSL_new(ets->ctx); -+ -+ if (!ets->ssl) -+ goto fail; -+ -+ /* -+ * Initialize the BIOs we use to read/write to ssl engine -+ */ -+ dbglog( "Initializing SSL BIOs" ); -+ ets->into_ssl = BIO_new(BIO_s_mem()); -+ ets->from_ssl = BIO_new(BIO_s_mem()); -+ SSL_set_bio(ets->ssl, ets->into_ssl, ets->from_ssl); -+ -+ SSL_set_msg_callback(ets->ssl, ssl_msg_callback); -+ SSL_set_msg_callback_arg(ets->ssl, ets); -+ -+ /* -+ * Attach the session struct to the connection, so we can later -+ * retrieve it when doing certificate verification -+ */ -+ SSL_set_ex_data(ets->ssl, 0, ets); -+ -+ SSL_set_connect_state(ets->ssl); -+ -+ ets->data = NULL; -+ ets->datalen = 0; -+ ets->alert_sent = 0; -+ ets->alert_recv = 0; -+ -+ /* -+ * If we specified the server certificate file, store it in -+ * ets->peercertfile, so we can check it later in -+ * ssl_verify_callback() -+ */ -+ if (servcertfile[0]) -+ strncpy(ets->peercertfile, servcertfile, MAXWORDLEN); -+ else -+ ets->peercertfile[0] = 0; -+ -+ return 1; -+ -+fail: -+ dbglog( "eaptls_init_ssl_client: fail" ); -+ SSL_CTX_free(ets->ctx); -+ return 0; -+ -+} -+ -+void eaptls_free_session(struct eaptls_session *ets) -+{ -+ if (ets->ssl) -+ SSL_free(ets->ssl); -+ -+ if (ets->ctx) -+ SSL_CTX_free(ets->ctx); -+ -+ free(ets); -+} -+ -+/* -+ * Handle a received packet, reassembling fragmented messages and -+ * passing them to the ssl engine -+ */ -+int eaptls_receive(struct eaptls_session *ets, u_char * inp, int len) -+{ -+ u_char flags; -+ u_int tlslen; -+ u_char dummy[65536]; -+ -+ GETCHAR(flags, inp); -+ len--; -+ -+ if (flags & EAP_TLS_FLAGS_LI && !ets->data) { -+ -+ /* -+ * This is the first packet of a message -+ */ -+ -+ GETLONG(tlslen, inp); -+ len -= 4; -+ -+ if (tlslen > EAP_TLS_MAX_LEN) { -+ error("Error: tls message length > %d, truncated", -+ EAP_TLS_MAX_LEN); -+ tlslen = EAP_TLS_MAX_LEN; -+ } -+ -+ /* -+ * Allocate memory for the whole message -+ */ -+ ets->data = malloc(tlslen); -+ if (!ets->data) -+ fatal("EAP TLS: allocation error\n"); -+ -+ ets->datalen = 0; -+ ets->tlslen = tlslen; -+ -+ } -+ else if (flags & EAP_TLS_FLAGS_LI && ets->data) { -+ /* -+ * Non first with LI (strange...) -+ */ -+ -+ GETLONG(tlslen, inp); -+ len -= 4; -+ -+ } -+ else if (!ets->data) { -+ /* -+ * A non fragmented message without LI flag -+ */ -+ -+ ets->data = malloc(len); -+ if (!ets->data) -+ fatal("EAP TLS: allocation error\n"); -+ -+ ets->datalen = 0; -+ ets->tlslen = len; -+ } -+ -+ if (flags & EAP_TLS_FLAGS_MF) -+ ets->frag = 1; -+ else -+ ets->frag = 0; -+ -+ if (len + ets->datalen > ets->tlslen) { -+ warn("EAP TLS: received data > TLS message length"); -+ return 1; -+ } -+ -+ BCOPY(inp, ets->data + ets->datalen, len); -+ ets->datalen += len; -+ -+ if (!ets->frag) { -+ -+ /* -+ * If we have the whole message, pass it to ssl -+ */ -+ -+ if (ets->datalen != ets->tlslen) { -+ warn("EAP TLS: received data != TLS message length"); -+ return 1; -+ } -+ -+ if (BIO_write(ets->into_ssl, ets->data, ets->datalen) == -1) -+ log_ssl_errors(); -+ -+ SSL_read(ets->ssl, dummy, 65536); -+ -+ free(ets->data); -+ ets->data = NULL; -+ ets->datalen = 0; -+ } -+ -+ return 0; -+} -+ -+/* -+ * Return an eap-tls packet in outp. -+ * A TLS message read from the ssl engine is buffered in ets->data. -+ * At each call we control if there is buffered data and send a -+ * packet of mtu bytes. -+ */ -+int eaptls_send(struct eaptls_session *ets, u_char ** outp) -+{ -+ bool first = 0; -+ int size; -+ u_char fromtls[65536]; -+ int res; -+ u_char *start; -+ -+ start = *outp; -+ -+ if (!ets->data) { -+ -+ if(!ets->alert_sent) -+ SSL_read(ets->ssl, fromtls, 65536); -+ -+ /* -+ * Read from ssl -+ */ -+ if ((res = BIO_read(ets->from_ssl, fromtls, 65536)) == -1) -+ fatal("No data from BIO_read"); -+ -+ ets->datalen = res; -+ -+ ets->data = malloc(ets->datalen); -+ BCOPY(fromtls, ets->data, ets->datalen); -+ -+ ets->offset = 0; -+ first = 1; -+ -+ } -+ -+ size = ets->datalen - ets->offset; -+ -+ if (size > ets->mtu) { -+ size = ets->mtu; -+ ets->frag = 1; -+ } else -+ ets->frag = 0; -+ -+ PUTCHAR(EAPT_TLS, *outp); -+ -+ /* -+ * Set right flags and length if necessary -+ */ -+ if (ets->frag && first) { -+ PUTCHAR(EAP_TLS_FLAGS_LI | EAP_TLS_FLAGS_MF, *outp); -+ PUTLONG(ets->datalen, *outp); -+ } else if (ets->frag) { -+ PUTCHAR(EAP_TLS_FLAGS_MF, *outp); -+ } else -+ PUTCHAR(0, *outp); -+ -+ /* -+ * Copy the data in outp -+ */ -+ BCOPY(ets->data + ets->offset, *outp, size); -+ INCPTR(size, *outp); -+ -+ /* -+ * Copy the packet in retransmission buffer -+ */ -+ BCOPY(start, &ets->rtx[0], *outp - start); -+ ets->rtx_len = *outp - start; -+ -+ ets->offset += size; -+ -+ if (ets->offset >= ets->datalen) { -+ -+ /* -+ * The whole message has been sent -+ */ -+ -+ free(ets->data); -+ ets->data = NULL; -+ ets->datalen = 0; -+ ets->offset = 0; -+ } -+ -+ return 0; -+} -+ -+/* -+ * Get the sent packet from the retransmission buffer -+ */ -+void eaptls_retransmit(struct eaptls_session *ets, u_char ** outp) -+{ -+ BCOPY(ets->rtx, *outp, ets->rtx_len); -+ INCPTR(ets->rtx_len, *outp); -+} -+ -+/* -+ * Verify a certificate. -+ * Most of the work (signatures and issuer attributes checking) -+ * is done by ssl; we check the CN in the peer certificate -+ * against the peer name. -+ */ -+int ssl_verify_callback(int preverify_ok, X509_STORE_CTX * ctx) -+{ -+ char subject[256]; -+ char cn_str[256]; -+ X509 *peer_cert; -+ int err, depth; -+ int ok = preverify_ok; -+ SSL *ssl; -+ struct eaptls_session *ets; -+ -+ peer_cert = X509_STORE_CTX_get_current_cert(ctx); -+ err = X509_STORE_CTX_get_error(ctx); -+ depth = X509_STORE_CTX_get_error_depth(ctx); -+ -+ dbglog("certificate verify depth: %d", depth); -+ -+ if (auth_required && !ok) { -+ X509_NAME_oneline(X509_get_subject_name(peer_cert), -+ subject, 256); -+ -+ X509_NAME_get_text_by_NID(X509_get_subject_name(peer_cert), -+ NID_commonName, cn_str, 256); -+ -+ dbglog("Certificate verification error:\n depth: %d CN: %s" -+ "\n err: %d (%s)\n", depth, cn_str, err, -+ X509_verify_cert_error_string(err)); -+ -+ return 0; -+ } -+ -+ ssl = X509_STORE_CTX_get_ex_data(ctx, -+ SSL_get_ex_data_X509_STORE_CTX_idx()); -+ -+ ets = (struct eaptls_session *)SSL_get_ex_data(ssl, 0); -+ -+ if (ets == NULL) { -+ error("Error: SSL_get_ex_data returned NULL"); -+ return 0; -+ } -+ -+ log_ssl_errors(); -+ -+ if (!depth) { /* This is the peer certificate */ -+ -+ X509_NAME_oneline(X509_get_subject_name(peer_cert), -+ subject, 256); -+ -+ X509_NAME_get_text_by_NID(X509_get_subject_name(peer_cert), -+ NID_commonName, cn_str, 256); -+ -+ /* -+ * If acting as client and the name of the server wasn't specified -+ * explicitely, we can't verify the server authenticity -+ */ -+ if (!ets->peer[0]) { -+ warn("Peer name not specified: no check"); -+ return 1; -+ } -+ -+ /* -+ * Check the CN -+ */ -+ if (strcmp(cn_str, ets->peer)) { -+ error -+ ("Certificate verification error: CN (%s) != peer_name (%s)", -+ cn_str, ets->peer); -+ return 0; -+ } -+ -+ warn("Certificate CN: %s , peer name %s", cn_str, ets->peer); -+ -+ /* -+ * If a peer certificate file was specified, here we check it -+ */ -+ if (ets->peercertfile[0]) { -+ if (ssl_cmp_certs(&ets->peercertfile[0], peer_cert) -+ != 0) { -+ error -+ ("Peer certificate doesn't match stored certificate"); -+ return 0; -+ } -+ } -+ } -+ -+ return 1; -+} -+ -+/* -+ * Compare a certificate with the one stored in a file -+ */ -+int ssl_cmp_certs(char *filename, X509 * a) -+{ -+ X509 *b; -+ int ret; -+ -+ if (!(b = get_X509_from_file(filename))) -+ return 1; -+ -+ ret = X509_cmp(a, b); -+ X509_free(b); -+ -+ return ret; -+ -+} -+ -+X509 *get_X509_from_file(char *filename) -+{ -+ FILE *fp; -+ X509 *ret; -+ -+ if (!(fp = fopen(filename, "r"))) -+ return NULL; -+ -+ ret = PEM_read_X509(fp, NULL, NULL, NULL); -+ -+ fclose(fp); -+ -+ return ret; -+} -+ -+/* -+ * Every sent & received message this callback function is invoked, -+ * so we know when alert messages have arrived or are sent and -+ * we can print debug information about TLS handshake. -+ */ -+void -+ssl_msg_callback(int write_p, int version, int content_type, -+ const void *buf, size_t len, SSL * ssl, void *arg) -+{ -+ char string[256]; -+ struct eaptls_session *ets = (struct eaptls_session *)arg; -+ unsigned char code; -+ const unsigned char*msg = buf; -+ int hvers = msg[1] << 8 | msg[2]; -+ -+ if(write_p) -+ strcpy(string, " -> "); -+ else -+ strcpy(string, " <- "); -+ -+ switch(content_type) { -+ -+#if OPENSSL_VERSION_NUMBER >= 0x10100000L -+ case SSL3_RT_HEADER: -+ strcat(string, "SSL/TLS Header: "); -+ switch(hvers) { -+ case SSL3_VERSION: -+ strcat(string, "SSL 3.0"); -+ break; -+ case TLS1_VERSION: -+ strcat(string, "TLS 1.0"); -+ break; -+ case TLS1_1_VERSION: -+ strcat(string, "TLS 1.1"); -+ break; -+ case TLS1_2_VERSION: -+ strcat(string, "TLS 1.2"); -+ break; -+ case DTLS1_VERSION: -+ strcat(string, "DTLS 1.0"); -+ break; -+ case DTLS1_2_VERSION: -+ strcat(string, "DTLS 1.2"); -+ break; -+ default: -+ strcat(string, "Unknown version"); -+ } -+ break; -+#endif /* OPENSSL_VERSION_NUMBER >= 0x10100000L */ -+ -+ case SSL3_RT_ALERT: -+ strcat(string, "Alert: "); -+ code = msg[1]; -+ -+ if (write_p) { -+ ets->alert_sent = 1; -+ ets->alert_sent_desc = code; -+ } else { -+ ets->alert_recv = 1; -+ ets->alert_recv_desc = code; -+ } -+ -+ strcat(string, SSL_alert_desc_string_long(code)); -+ break; -+ -+ case SSL3_RT_CHANGE_CIPHER_SPEC: -+ strcat(string, "ChangeCipherSpec"); -+ break; -+ -+ case SSL3_RT_HANDSHAKE: -+ -+ strcat(string, "Handshake: "); -+ code = msg[0]; -+ -+ switch(code) { -+ case SSL3_MT_HELLO_REQUEST: -+ strcat(string,"Hello Request"); -+ break; -+ case SSL3_MT_CLIENT_HELLO: -+ strcat(string,"Client Hello"); -+ break; -+ case SSL3_MT_SERVER_HELLO: -+ strcat(string,"Server Hello"); -+ break; -+#ifdef SSL3_MT_NEWSESSION_TICKET -+ case SSL3_MT_NEWSESSION_TICKET: -+ strcat(string,"New Session Ticket"); -+ break; -+#endif -+ case SSL3_MT_CERTIFICATE: -+ strcat(string,"Certificate"); -+ break; -+ case SSL3_MT_SERVER_KEY_EXCHANGE: -+ strcat(string,"Server Key Exchange"); -+ break; -+ case SSL3_MT_CERTIFICATE_REQUEST: -+ strcat(string,"Certificate Request"); -+ break; -+ case SSL3_MT_SERVER_DONE: -+ strcat(string,"Server Hello Done"); -+ break; -+ case SSL3_MT_CERTIFICATE_VERIFY: -+ strcat(string,"Certificate Verify"); -+ break; -+ case SSL3_MT_CLIENT_KEY_EXCHANGE: -+ strcat(string,"Client Key Exchange"); -+ break; -+ case SSL3_MT_FINISHED: -+ strcat(string,"Finished"); -+ break; -+ -+ default: -+ sprintf( string, "Handshake: Unknown SSL3 code received: %d", code ); -+ } -+ break; -+ -+ default: -+ sprintf( string, "SSL message contains unknown content type: %d", content_type ); -+ -+ } -+ -+ /* Alert messages must always be displayed */ -+ if(content_type == SSL3_RT_ALERT) -+ error("%s", string); -+ else -+ dbglog("%s", string); -+} -+ -diff -Naur ppp-2.4.7/pppd/eap-tls.h ppp-2.4.7-eaptls-mppe-0.999/pppd/eap-tls.h ---- ppp-2.4.7/pppd/eap-tls.h 1970-01-01 01:00:00.000000000 +0100 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/eap-tls.h 2017-05-09 14:38:55.150083347 +0200 -@@ -0,0 +1,107 @@ -+/* -+ * eap-tls.h -+ * -+ * Copyright (c) Beniamino Galvani 2005 All rights reserved. -+ * -+ * Redistribution and use in source and binary forms, with or without -+ * modification, are permitted provided that the following conditions -+ * are met: -+ * -+ * 1. Redistributions of source code must retain the above copyright -+ * notice, this list of conditions and the following disclaimer. -+ * -+ * 2. Redistributions in binary form must reproduce the above copyright -+ * notice, this list of conditions and the following disclaimer in -+ * the documentation and/or other materials provided with the -+ * distribution. -+ * -+ * 3. The name(s) of the authors of this software must not be used to -+ * endorse or promote products derived from this software without -+ * prior written permission. -+ * -+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO -+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY -+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY -+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN -+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING -+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -+ * -+ */ -+ -+#ifndef __EAP_TLS_H__ -+#define __EAP_TLS_H__ -+ -+#include "eap.h" -+ -+#include <openssl/ssl.h> -+#include <openssl/bio.h> -+#include <openssl/md5.h> -+ -+#define EAP_TLS_FLAGS_LI 128 /* length included flag */ -+#define EAP_TLS_FLAGS_MF 64 /* more fragments flag */ -+#define EAP_TLS_FLAGS_START 32 /* start flag */ -+ -+#define EAP_TLS_MAX_LEN 65536 /* max eap tls packet size */ -+ -+struct eaptls_session -+{ -+ u_char *data; /* buffered data */ -+ int datalen; /* buffered data len */ -+ int offset; /* from where to send */ -+ int tlslen; /* total length of tls data */ -+ bool frag; /* packet is fragmented */ -+ SSL_CTX *ctx; -+ SSL *ssl; /* ssl connection */ -+ BIO *from_ssl; -+ BIO *into_ssl; -+ char peer[MAXWORDLEN]; /* peer name */ -+ char peercertfile[MAXWORDLEN]; -+ bool alert_sent; -+ u_char alert_sent_desc; -+ bool alert_recv; -+ u_char alert_recv_desc; -+ char rtx[65536]; /* retransmission buffer */ -+ int rtx_len; -+ int mtu; /* unit mtu */ -+}; -+ -+typedef struct pw_cb_data -+{ -+ const void *password; -+ const char *prompt_info; -+} PW_CB_DATA; -+ -+ -+int ssl_verify_callback(int, X509_STORE_CTX *); -+void ssl_msg_callback(int write_p, int version, int ct, const void *buf, -+ size_t len, SSL * ssl, void *arg); -+ -+X509 *get_X509_from_file(char *filename); -+int ssl_cmp_certs(char *filename, X509 * a); -+ -+SSL_CTX *eaptls_init_ssl(int init_server, char *cacertfile, -+ char *certfile, char *peer_certfile, char *privkeyfile); -+int eaptls_init_ssl_server(eap_state * esp); -+int eaptls_init_ssl_client(eap_state * esp); -+void eaptls_free_session(struct eaptls_session *ets); -+ -+int eaptls_receive(struct eaptls_session *ets, u_char * inp, int len); -+int eaptls_send(struct eaptls_session *ets, u_char ** outp); -+void eaptls_retransmit(struct eaptls_session *ets, u_char ** outp); -+ -+int get_eaptls_secret(int unit, char *client, char *server, -+ char *clicertfile, char *servcertfile, char *cacertfile, -+ char *pkfile, int am_server); -+ -+#ifdef MPPE -+#include "mppe.h" /* MPPE_MAX_KEY_LEN */ -+extern u_char mppe_send_key[MPPE_MAX_KEY_LEN]; -+extern u_char mppe_recv_key[MPPE_MAX_KEY_LEN]; -+extern int mppe_keys_set; -+ -+void eaptls_gen_mppe_keys(struct eaptls_session *ets, const char *prf_label, int client); -+ -+#endif -+ -+#endif -diff -Naur ppp-2.4.7/pppd/eap.c ppp-2.4.7-eaptls-mppe-0.999/pppd/eap.c ---- ppp-2.4.7/pppd/eap.c 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/eap.c 2017-05-09 14:38:55.151083274 +0200 -@@ -43,6 +43,11 @@ - * Based on draft-ietf-pppext-eap-srp-03.txt. - */ - -+/* -+ * Modification by Beniamino Galvani, Mar 2005 -+ * Implemented EAP-TLS authentication -+ */ -+ - #define RCSID "$Id: eap.c,v 1.4 2004/11/09 22:39:25 paulus Exp $" - - /* -@@ -62,8 +67,12 @@ - - #include "pppd.h" - #include "pathnames.h" --#include "md5.h" - #include "eap.h" -+#ifdef USE_EAPTLS -+#include "eap-tls.h" -+#else -+#include "md5.h" -+#endif /* USE_EAPTLS */ - - #ifdef USE_SRP - #include <t_pwd.h> -@@ -209,6 +218,9 @@ - esp->es_server.ea_id = (u_char)(drand48() * 0x100); - esp->es_client.ea_timeout = EAP_DEFREQTIME; - esp->es_client.ea_maxrequests = EAP_DEFALLOWREQ; -+#ifdef USE_EAPTLS -+ esp->es_client.ea_using_eaptls = 0; -+#endif /* USE_EAPTLS */ - } - - /* -@@ -436,8 +448,16 @@ - u_char vals[2]; - struct b64state bs; - #endif /* USE_SRP */ -+#ifdef USE_EAPTLS -+ struct eaptls_session *ets; -+ int secret_len; -+ char secret[MAXWORDLEN]; -+#endif /* USE_EAPTLS */ - - esp->es_server.ea_timeout = esp->es_savedtime; -+#ifdef USE_EAPTLS -+ esp->es_server.ea_prev_state = esp->es_server.ea_state; -+#endif /* USE_EAPTLS */ - switch (esp->es_server.ea_state) { - case eapBadAuth: - return; -@@ -562,9 +582,79 @@ - break; - } - #endif /* USE_SRP */ -+#ifdef USE_EAPTLS -+ if (!get_secret(esp->es_unit, esp->es_server.ea_peer, -+ esp->es_server.ea_name, secret, &secret_len, 1)) { -+ -+ esp->es_server.ea_state = eapTlsStart; -+ break; -+ } -+#endif /* USE_EAPTLS */ -+ - esp->es_server.ea_state = eapMD5Chall; - break; - -+#ifdef USE_EAPTLS -+ case eapTlsStart: -+ /* Initialize ssl session */ -+ if(!eaptls_init_ssl_server(esp)) { -+ esp->es_server.ea_state = eapBadAuth; -+ break; -+ } -+ -+ esp->es_server.ea_state = eapTlsRecv; -+ break; -+ -+ case eapTlsRecv: -+ ets = (struct eaptls_session *) esp->es_server.ea_session; -+ -+ if(ets->alert_sent) { -+ esp->es_server.ea_state = eapTlsSendAlert; -+ break; -+ } -+ -+ if (status) { -+ esp->es_server.ea_state = eapBadAuth; -+ break; -+ } -+ ets = (struct eaptls_session *) esp->es_server.ea_session; -+ -+ if(ets->frag) -+ esp->es_server.ea_state = eapTlsSendAck; -+ else -+ esp->es_server.ea_state = eapTlsSend; -+ break; -+ -+ case eapTlsSend: -+ ets = (struct eaptls_session *) esp->es_server.ea_session; -+ -+ if(ets->frag) -+ esp->es_server.ea_state = eapTlsRecvAck; -+ else -+ if(SSL_is_init_finished(ets->ssl)) -+ esp->es_server.ea_state = eapTlsRecvClient; -+ else -+ esp->es_server.ea_state = eapTlsRecv; -+ break; -+ -+ case eapTlsSendAck: -+ esp->es_server.ea_state = eapTlsRecv; -+ break; -+ -+ case eapTlsRecvAck: -+ if (status) { -+ esp->es_server.ea_state = eapBadAuth; -+ break; -+ } -+ -+ esp->es_server.ea_state = eapTlsSend; -+ break; -+ -+ case eapTlsSendAlert: -+ esp->es_server.ea_state = eapTlsRecvAlertAck; -+ break; -+#endif /* USE_EAPTLS */ -+ - case eapSRP1: - #ifdef USE_SRP - ts = (struct t_server *)esp->es_server.ea_session; -@@ -718,6 +808,30 @@ - INCPTR(esp->es_server.ea_namelen, outp); - break; - -+#ifdef USE_EAPTLS -+ case eapTlsStart: -+ PUTCHAR(EAPT_TLS, outp); -+ PUTCHAR(EAP_TLS_FLAGS_START, outp); -+ eap_figure_next_state(esp, 0); -+ break; -+ -+ case eapTlsSend: -+ eaptls_send(esp->es_server.ea_session, &outp); -+ eap_figure_next_state(esp, 0); -+ break; -+ -+ case eapTlsSendAck: -+ PUTCHAR(EAPT_TLS, outp); -+ PUTCHAR(0, outp); -+ eap_figure_next_state(esp, 0); -+ break; -+ -+ case eapTlsSendAlert: -+ eaptls_send(esp->es_server.ea_session, &outp); -+ eap_figure_next_state(esp, 0); -+ break; -+#endif /* USE_EAPTLS */ -+ - #ifdef USE_SRP - case eapSRP1: - PUTCHAR(EAPT_SRP, outp); -@@ -904,11 +1018,57 @@ - eap_server_timeout(arg) - void *arg; - { -+#ifdef USE_EAPTLS -+ u_char *outp; -+ u_char *lenloc; -+ int outlen; -+#endif /* USE_EAPTLS */ -+ - eap_state *esp = (eap_state *) arg; - - if (!eap_server_active(esp)) - return; - -+#ifdef USE_EAPTLS -+ switch(esp->es_server.ea_prev_state) { -+ -+ /* -+ * In eap-tls the state changes after a request, so we return to -+ * previous state ... -+ */ -+ case(eapTlsStart): -+ case(eapTlsSendAck): -+ esp->es_server.ea_state = esp->es_server.ea_prev_state; -+ break; -+ -+ /* -+ * ... or resend the stored data -+ */ -+ case(eapTlsSend): -+ case(eapTlsSendAlert): -+ outp = outpacket_buf; -+ MAKEHEADER(outp, PPP_EAP); -+ PUTCHAR(EAP_REQUEST, outp); -+ PUTCHAR(esp->es_server.ea_id, outp); -+ lenloc = outp; -+ INCPTR(2, outp); -+ -+ eaptls_retransmit(esp->es_server.ea_session, &outp); -+ -+ outlen = (outp - outpacket_buf) - PPP_HDRLEN; -+ PUTSHORT(outlen, lenloc); -+ output(esp->es_unit, outpacket_buf, outlen + PPP_HDRLEN); -+ esp->es_server.ea_requests++; -+ -+ if (esp->es_server.ea_timeout > 0) -+ TIMEOUT(eap_server_timeout, esp, esp->es_server.ea_timeout); -+ -+ return; -+ default: -+ break; -+ } -+#endif /* USE_EAPTLS */ -+ - /* EAP ID number must not change on timeout. */ - eap_send_request(esp); - } -@@ -1166,6 +1326,81 @@ - } - #endif /* USE_SRP */ - -+#ifdef USE_EAPTLS -+/* -+ * Send an EAP-TLS response message with tls data -+ */ -+static void -+eap_tls_response(esp, id) -+eap_state *esp; -+u_char id; -+{ -+ u_char *outp; -+ int outlen; -+ u_char *lenloc; -+ -+ outp = outpacket_buf; -+ -+ MAKEHEADER(outp, PPP_EAP); -+ -+ PUTCHAR(EAP_RESPONSE, outp); -+ PUTCHAR(id, outp); -+ -+ lenloc = outp; -+ INCPTR(2, outp); -+ -+ /* -+ If the id in the request is unchanged, we must retransmit -+ the old data -+ */ -+ if(id == esp->es_client.ea_id) -+ eaptls_retransmit(esp->es_client.ea_session, &outp); -+ else -+ eaptls_send(esp->es_client.ea_session, &outp); -+ -+ outlen = (outp - outpacket_buf) - PPP_HDRLEN; -+ PUTSHORT(outlen, lenloc); -+ -+ output(esp->es_unit, outpacket_buf, PPP_HDRLEN + outlen); -+ -+ esp->es_client.ea_id = id; -+ -+} -+ -+/* -+ * Send an EAP-TLS ack -+ */ -+static void -+eap_tls_sendack(esp, id) -+eap_state *esp; -+u_char id; -+{ -+ u_char *outp; -+ int outlen; -+ u_char *lenloc; -+ -+ outp = outpacket_buf; -+ -+ MAKEHEADER(outp, PPP_EAP); -+ -+ PUTCHAR(EAP_RESPONSE, outp); -+ PUTCHAR(id, outp); -+ esp->es_client.ea_id = id; -+ -+ lenloc = outp; -+ INCPTR(2, outp); -+ -+ PUTCHAR(EAPT_TLS, outp); -+ PUTCHAR(0, outp); -+ -+ outlen = (outp - outpacket_buf) - PPP_HDRLEN; -+ PUTSHORT(outlen, lenloc); -+ -+ output(esp->es_unit, outpacket_buf, PPP_HDRLEN + outlen); -+ -+} -+#endif /* USE_EAPTLS */ -+ - static void - eap_send_nak(esp, id, type) - eap_state *esp; -@@ -1320,6 +1555,11 @@ - char rhostname[256]; - MD5_CTX mdContext; - u_char hash[MD5_SIGNATURE_SIZE]; -+#ifdef USE_EAPTLS -+ u_char flags; -+ struct eaptls_session *ets = esp->es_client.ea_session; -+#endif /* USE_EAPTLS */ -+ - #ifdef USE_SRP - struct t_client *tc; - struct t_num sval, gval, Nval, *Ap, Bval; -@@ -1456,6 +1696,90 @@ - esp->es_client.ea_namelen); - break; - -+#ifdef USE_EAPTLS -+ case EAPT_TLS: -+ -+ switch(esp->es_client.ea_state) { -+ -+ case eapListen: -+ -+ GETCHAR(flags, inp); -+ if(flags & EAP_TLS_FLAGS_START){ -+ -+ esp->es_client.ea_using_eaptls = 1; -+ -+ if (explicit_remote){ -+ esp->es_client.ea_peer = strdup(remote_name); -+ esp->es_client.ea_peerlen = strlen(remote_name); -+ } else -+ esp->es_client.ea_peer = NULL; -+ -+ /* Init ssl session */ -+ if(!eaptls_init_ssl_client(esp)) { -+ dbglog("cannot init ssl"); -+ eap_send_nak(esp, id, EAPT_TLS); -+ esp->es_client.ea_using_eaptls = 0; -+ break; -+ } -+ -+ ets = esp->es_client.ea_session; -+ eap_tls_response(esp, id); -+ esp->es_client.ea_state = (ets->frag ? eapTlsRecvAck : -+ eapTlsRecv); -+ break; -+ } -+ -+ /* The server has sent a bad start packet. */ -+ eap_send_nak(esp, id, EAPT_TLS); -+ break; -+ -+ case eapTlsRecvAck: -+ eap_tls_response(esp, id); -+ esp->es_client.ea_state = (ets->frag ? eapTlsRecvAck : -+ eapTlsRecv); -+ break; -+ -+ case eapTlsRecv: -+ eaptls_receive(ets, inp, len); -+ -+ if(ets->frag) { -+ eap_tls_sendack(esp, id); -+ esp->es_client.ea_state = eapTlsRecv; -+ break; -+ } -+ -+ if(ets->alert_recv) { -+ eap_tls_sendack(esp, id); -+ esp->es_client.ea_state = eapTlsRecvFailure; -+ break; -+ } -+ -+ /* Check if TLS handshake is finished */ -+ if(SSL_is_init_finished(ets->ssl)){ -+#ifdef MPPE -+ eaptls_gen_mppe_keys( ets, "client EAP encryption", 1 ); -+#endif -+ eaptls_free_session(ets); -+ eap_tls_sendack(esp, id); -+ esp->es_client.ea_state = eapTlsRecvSuccess; -+ break; -+ } -+ -+ eap_tls_response(esp,id); -+ esp->es_client.ea_state = (ets->frag ? eapTlsRecvAck : -+ eapTlsRecv); -+ -+ break; -+ -+ default: -+ eap_send_nak(esp, id, EAPT_TLS); -+ esp->es_client.ea_using_eaptls = 0; -+ break; -+ } -+ -+ break; -+#endif /* USE_EAPTLS */ -+ - #ifdef USE_SRP - case EAPT_SRP: - if (len < 1) { -@@ -1737,6 +2061,11 @@ - u_char dig[SHA_DIGESTSIZE]; - #endif /* USE_SRP */ - -+#ifdef USE_EAPTLS -+ struct eaptls_session *ets; -+ u_char flags; -+#endif /* USE_EAPTLS */ -+ - if (esp->es_server.ea_id != id) { - dbglog("EAP: discarding Response %d; expected ID %d", id, - esp->es_server.ea_id); -@@ -1776,6 +2105,60 @@ - eap_figure_next_state(esp, 0); - break; - -+#ifdef USE_EAPTLS -+ case EAPT_TLS: -+ switch(esp->es_server.ea_state) { -+ -+ case eapTlsRecv: -+ ets = (struct eaptls_session *) esp->es_server.ea_session; -+ eap_figure_next_state(esp, -+ eaptls_receive(esp->es_server.ea_session, inp, len)); -+ -+ if(ets->alert_recv) { -+ eap_send_failure(esp); -+ break; -+ } -+ break; -+ -+ case eapTlsRecvAck: -+ if(len > 1) { -+ dbglog("EAP-TLS ACK with extra data"); -+ } -+ eap_figure_next_state(esp, 0); -+ break; -+ -+ case eapTlsRecvClient: -+ /* Receive authentication response from client */ -+ -+ GETCHAR(flags, inp); -+ -+ if(len == 1 && !flags) { /* Ack = ok */ -+#ifdef MPPE -+ eaptls_gen_mppe_keys( esp->es_server.ea_session, "client EAP encryption", 0 ); -+#endif -+ eap_send_success(esp); -+ } -+ else { /* failure */ -+ eaptls_receive(esp->es_server.ea_session, inp, len); -+ warn("Server authentication failed"); -+ eap_send_failure(esp); -+ } -+ -+ eaptls_free_session(esp->es_server.ea_session); -+ -+ break; -+ -+ case eapTlsRecvAlertAck: -+ eap_send_failure(esp); -+ break; -+ -+ default: -+ eap_figure_next_state(esp, 1); -+ break; -+ } -+ break; -+#endif /* USE_EAPTLS */ -+ - case EAPT_NOTIFICATION: - dbglog("EAP unexpected Notification; response discarded"); - break; -@@ -1807,6 +2190,13 @@ - esp->es_server.ea_state = eapMD5Chall; - break; - -+#ifdef USE_EAPTLS -+ /* Send EAP-TLS start packet */ -+ case EAPT_TLS: -+ esp->es_server.ea_state = eapTlsStart; -+ break; -+#endif /* USE_EAPTLS */ -+ - default: - dbglog("EAP: peer requesting unknown Type %d", vallen); - switch (esp->es_server.ea_state) { -@@ -2018,13 +2408,27 @@ - int id; - int len; - { -- if (esp->es_client.ea_state != eapOpen && !eap_client_active(esp)) { -+ if (esp->es_client.ea_state != eapOpen && !eap_client_active(esp) -+#ifdef USE_EAPTLS -+ && esp->es_client.ea_state != eapTlsRecvSuccess -+#endif /* USE_EAPTLS */ -+ ) { - dbglog("EAP unexpected success message in state %s (%d)", - eap_state_name(esp->es_client.ea_state), - esp->es_client.ea_state); - return; - } - -+#ifdef USE_EAPTLS -+ if(esp->es_client.ea_using_eaptls && esp->es_client.ea_state != -+ eapTlsRecvSuccess) { -+ dbglog("EAP-TLS unexpected success message in state %s (%d)", -+ eap_state_name(esp->es_client.ea_state), -+ esp->es_client.ea_state); -+ return; -+ } -+#endif /* USE_EAPTLS */ -+ - if (esp->es_client.ea_timeout > 0) { - UNTIMEOUT(eap_client_timeout, (void *)esp); - } -@@ -2150,6 +2554,9 @@ - int code, id, len, rtype, vallen; - u_char *pstart; - u_int32_t uval; -+#ifdef USE_EAPTLS -+ u_char flags; -+#endif /* USE_EAPTLS */ - - if (inlen < EAP_HEADERLEN) - return (0); -@@ -2214,6 +2621,24 @@ - } - break; - -+#ifdef USE_EAPTLS -+ case EAPT_TLS: -+ if (len < 1) -+ break; -+ GETCHAR(flags, inp); -+ len--; -+ -+ if(flags == 0 && len == 0){ -+ printer(arg, " Ack"); -+ break; -+ } -+ -+ printer(arg, flags & EAP_TLS_FLAGS_LI ? " L":" -"); -+ printer(arg, flags & EAP_TLS_FLAGS_MF ? "M":"-"); -+ printer(arg, flags & EAP_TLS_FLAGS_START ? "S":"- "); -+ break; -+#endif /* USE_EAPTLS */ -+ - case EAPT_SRP: - if (len < 3) - goto truncated; -@@ -2325,6 +2750,25 @@ - } - break; - -+#ifdef USE_EAPTLS -+ case EAPT_TLS: -+ if (len < 1) -+ break; -+ GETCHAR(flags, inp); -+ len--; -+ -+ if(flags == 0 && len == 0){ -+ printer(arg, " Ack"); -+ break; -+ } -+ -+ printer(arg, flags & EAP_TLS_FLAGS_LI ? " L":" -"); -+ printer(arg, flags & EAP_TLS_FLAGS_MF ? "M":"-"); -+ printer(arg, flags & EAP_TLS_FLAGS_START ? "S":"- "); -+ -+ break; -+#endif /* USE_EAPTLS */ -+ - case EAPT_NAK: - if (len <= 0) { - printer(arg, " <missing hint>"); -@@ -2426,3 +2870,4 @@ - - return (inp - pstart); - } -+ -diff -Naur ppp-2.4.7/pppd/eap.h ppp-2.4.7-eaptls-mppe-0.999/pppd/eap.h ---- ppp-2.4.7/pppd/eap.h 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/eap.h 2017-05-09 14:38:55.152083200 +0200 -@@ -84,6 +84,16 @@ - eapClosed, /* Authentication not in use */ - eapListen, /* Client ready (and timer running) */ - eapIdentify, /* EAP Identify sent */ -+ eapTlsStart, /* Send EAP-TLS start packet */ -+ eapTlsRecv, /* Receive EAP-TLS tls data */ -+ eapTlsSendAck, /* Send EAP-TLS ack */ -+ eapTlsSend, /* Send EAP-TLS tls data */ -+ eapTlsRecvAck, /* Receive EAP-TLS ack */ -+ eapTlsRecvClient, /* Receive EAP-TLS auth response from client*/ -+ eapTlsSendAlert, /* Send EAP-TLS tls alert (server)*/ -+ eapTlsRecvAlertAck, /* Receive EAP-TLS ack after sending alert */ -+ eapTlsRecvSuccess, /* Receive EAP success */ -+ eapTlsRecvFailure, /* Receive EAP failure */ - eapSRP1, /* Sent EAP SRP-SHA1 Subtype 1 */ - eapSRP2, /* Sent EAP SRP-SHA1 Subtype 2 */ - eapSRP3, /* Sent EAP SRP-SHA1 Subtype 3 */ -@@ -95,9 +105,18 @@ - - #define EAP_STATES \ - "Initial", "Pending", "Closed", "Listen", "Identify", \ -+ "TlsStart", "TlsRecv", "TlsSendAck", "TlsSend", "TlsRecvAck", "TlsRecvClient",\ -+ "TlsSendAlert", "TlsRecvAlertAck" , "TlsRecvSuccess", "TlsRecvFailure", \ - "SRP1", "SRP2", "SRP3", "MD5Chall", "Open", "SRP4", "BadAuth" - --#define eap_client_active(esp) ((esp)->es_client.ea_state == eapListen) -+#ifdef USE_EAPTLS -+#define eap_client_active(esp) ((esp)->es_client.ea_state != eapInitial &&\ -+ (esp)->es_client.ea_state != eapPending &&\ -+ (esp)->es_client.ea_state != eapClosed) -+#else -+#define eap_client_active(esp) ((esp)->es_client.ea_state == eapListen) -+#endif /* USE_EAPTLS */ -+ - #define eap_server_active(esp) \ - ((esp)->es_server.ea_state >= eapIdentify && \ - (esp)->es_server.ea_state <= eapMD5Chall) -@@ -112,11 +131,17 @@ - u_short ea_namelen; /* Length of our name */ - u_short ea_peerlen; /* Length of peer's name */ - enum eap_state_code ea_state; -+#ifdef USE_EAPTLS -+ enum eap_state_code ea_prev_state; -+#endif - u_char ea_id; /* Current id */ - u_char ea_requests; /* Number of Requests sent/received */ - u_char ea_responses; /* Number of Responses */ - u_char ea_type; /* One of EAPT_* */ - u_int32_t ea_keyflags; /* SRP shared key usage flags */ -+#ifdef USE_EAPTLS -+ bool ea_using_eaptls; -+#endif - }; - - /* -@@ -139,7 +164,12 @@ - * Timeouts. - */ - #define EAP_DEFTIMEOUT 3 /* Timeout (seconds) for rexmit */ -+#ifdef USE_EAPTLS -+#define EAP_DEFTRANSMITS 30 /* max # times to transmit */ -+ /* certificates can be long ... */ -+#else - #define EAP_DEFTRANSMITS 10 /* max # times to transmit */ -+#endif /* USE_EAPTLS */ - #define EAP_DEFREQTIME 20 /* Time to wait for peer request */ - #define EAP_DEFALLOWREQ 20 /* max # times to accept requests */ - -diff -Naur ppp-2.4.7/pppd/md5.c ppp-2.4.7-eaptls-mppe-0.999/pppd/md5.c ---- ppp-2.4.7/pppd/md5.c 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/md5.c 2017-05-09 14:38:55.152083200 +0200 -@@ -33,6 +33,8 @@ - *********************************************************************** - */ - -+#ifndef USE_EAPTLS -+ - #include <string.h> - #include "md5.h" - -@@ -305,3 +307,5 @@ - ** End of md5.c ** - ******************************** (cut) ******************************** - */ -+#endif /* USE_EAPTLS */ -+ -diff -Naur ppp-2.4.7/pppd/md5.h ppp-2.4.7-eaptls-mppe-0.999/pppd/md5.h ---- ppp-2.4.7/pppd/md5.h 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/md5.h 2017-05-09 14:38:55.152083200 +0200 -@@ -36,6 +36,7 @@ - ** documentation and/or software. ** - *********************************************************************** - */ -+#ifndef USE_EAPTLS - - #ifndef __MD5_INCLUDE__ - -@@ -63,3 +64,5 @@ - - #define __MD5_INCLUDE__ - #endif /* __MD5_INCLUDE__ */ -+ -+#endif /* USE_EAPTLS */ -diff -Naur ppp-2.4.7/pppd/pathnames.h ppp-2.4.7-eaptls-mppe-0.999/pppd/pathnames.h ---- ppp-2.4.7/pppd/pathnames.h 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/pathnames.h 2017-05-09 14:38:55.153083126 +0200 -@@ -21,6 +21,13 @@ - #define _PATH_UPAPFILE _ROOT_PATH "/etc/ppp/pap-secrets" - #define _PATH_CHAPFILE _ROOT_PATH "/etc/ppp/chap-secrets" - #define _PATH_SRPFILE _ROOT_PATH "/etc/ppp/srp-secrets" -+ -+#ifdef USE_EAPTLS -+#define _PATH_EAPTLSCLIFILE _ROOT_PATH "/etc/ppp/eaptls-client" -+#define _PATH_EAPTLSSERVFILE _ROOT_PATH "/etc/ppp/eaptls-server" -+#define _PATH_OPENSSLCONFFILE _ROOT_PATH "/etc/ppp/openssl.cnf" -+#endif /* USE_EAPTLS */ -+ - #define _PATH_SYSOPTIONS _ROOT_PATH "/etc/ppp/options" - #define _PATH_IPUP _ROOT_PATH "/etc/ppp/ip-up" - #define _PATH_IPDOWN _ROOT_PATH "/etc/ppp/ip-down" -diff -Naur ppp-2.4.7/pppd/plugins/Makefile.linux ppp-2.4.7-eaptls-mppe-0.999/pppd/plugins/Makefile.linux ---- ppp-2.4.7/pppd/plugins/Makefile.linux 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/plugins/Makefile.linux 2017-05-09 14:38:55.153083126 +0200 -@@ -4,6 +4,9 @@ - LDFLAGS = -shared - INSTALL = install - -+# EAP-TLS -+CFLAGS += -DUSE_EAPTLS=1 -+ - DESTDIR = $(INSTROOT)@DESTDIR@ - BINDIR = $(DESTDIR)/sbin - MANDIR = $(DESTDIR)/share/man/man8 -diff -Naur ppp-2.4.7/pppd/plugins/passprompt.c ppp-2.4.7-eaptls-mppe-0.999/pppd/plugins/passprompt.c ---- ppp-2.4.7/pppd/plugins/passprompt.c 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/plugins/passprompt.c 2017-05-09 14:38:55.153083126 +0200 -@@ -107,4 +107,7 @@ - { - add_options(options); - pap_passwd_hook = promptpass; -+#ifdef USE_EAPTLS -+ eaptls_passwd_hook = promptpass; -+#endif - } -diff -Naur ppp-2.4.7/pppd/plugins/passwordfd.c ppp-2.4.7-eaptls-mppe-0.999/pppd/plugins/passwordfd.c ---- ppp-2.4.7/pppd/plugins/passwordfd.c 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/plugins/passwordfd.c 2017-05-09 14:38:55.154083052 +0200 -@@ -79,4 +79,8 @@ - - chap_check_hook = pwfd_check; - chap_passwd_hook = pwfd_passwd; -+ -+#ifdef USE_EAPTLS -+ eaptls_passwd_hook = pwfd_passwd; -+#endif - } -diff -Naur ppp-2.4.7/pppd/pppd.8 ppp-2.4.7-eaptls-mppe-0.999/pppd/pppd.8 ---- ppp-2.4.7/pppd/pppd.8 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/pppd.8 2017-05-09 14:38:55.155082978 +0200 -@@ -248,6 +248,12 @@ - compression in the corresponding direction. Use \fInobsdcomp\fR or - \fIbsdcomp 0\fR to disable BSD-Compress compression entirely. - .TP -+.B ca \fIca-file -+(EAP-TLS) Use the file \fIca-file\fR as the X.509 Certificate Authority -+(CA) file (in PEM format), needed for setting up an EAP-TLS connection. -+This option is used on the client-side in conjunction with the \fBcert\fR -+and \fBkey\fR options. -+.TP - .B cdtrcts - Use a non-standard hardware flow control (i.e. DTR/CTS) to control - the flow of data on the serial port. If neither the \fIcrtscts\fR, -@@ -259,6 +265,12 @@ - bi-directional flow control. The sacrifice is that this flow - control mode does not permit using DTR as a modem control line. - .TP -+.B cert \fIcertfile -+(EAP-TLS) Use the file \fIcertfile\fR as the X.509 certificate (in PEM -+format), needed for setting up an EAP-TLS connection. This option is -+used on the client-side in conjunction with the \fBca\fR and -+\fBkey\fR options. -+.TP - .B chap\-interval \fIn - If this option is given, pppd will rechallenge the peer every \fIn\fR - seconds. -@@ -287,6 +299,18 @@ - 1000 (1 second). This wait period only applies if the \fBconnect\fR - or \fBpty\fR option is used. - .TP -+.B crl \fIfilename -+(EAP-TLS) Use the file \fIfilename\fR as the Certificate Revocation List -+to check for the validity of the peer's certificate. This option is not -+mandatory for setting up an EAP-TLS connection. Also see the \fBcrl-dir\fR -+option. -+.TP -+.B crl-dir \fIdirectory -+(EAP-TLS) Use the directory \fIdirectory\fR to scan for CRL files in -+has format ($hash.r0) to check for the validity of the peer's certificate. -+This option is not mandatory for setting up an EAP-TLS connection. -+Also see the \fBcrl\fR option. -+.TP - .B debug - Enables connection debugging facilities. - If this option is given, pppd will log the contents of all -@@ -551,6 +575,12 @@ - the kernel are logged by syslog(1) to a file as directed in the - /etc/syslog.conf configuration file. - .TP -+.B key \fIkeyfile -+(EAP-TLS) Use the file \fIkeyfile\fR as the private key file (in PEM -+format), needed for setting up an EAP-TLS connection. This option is -+used on the client-side in conjunction with the \fBca\fR and -+\fBcert\fR options. -+.TP - .B ktune - Enables pppd to alter kernel settings as appropriate. Under Linux, - pppd will enable IP forwarding (i.e. set /proc/sys/net/ipv4/ip_forward -@@ -709,6 +739,9 @@ - Disable Address/Control compression in both directions (send and - receive). - .TP -+.B need-peer-eap -+(EAP-TLS) Require the peer to verify our authentication credentials. -+.TP - .B noauth - Do not require the peer to authenticate itself. This option is - privileged. -diff -Naur ppp-2.4.7/pppd/pppd.h ppp-2.4.7-eaptls-mppe-0.999/pppd/pppd.h ---- ppp-2.4.7/pppd/pppd.h 2014-08-09 14:31:39.000000000 +0200 -+++ ppp-2.4.7-eaptls-mppe-0.999/pppd/pppd.h 2017-05-09 14:38:55.156082905 +0200 -@@ -325,6 +325,11 @@ - extern bool dryrun; /* check everything, print options, exit */ - extern int child_wait; /* # seconds to wait for children at end */ - -+#ifdef USE_EAPTLS -+extern char *crl_dir; -+extern char *crl_file; -+#endif /* USE_EAPTLS */ -+ - #ifdef MAXOCTETS - extern unsigned int maxoctets; /* Maximum octetes per session (in bytes) */ - extern int maxoctets_dir; /* Direction : -@@ -741,6 +746,10 @@ - extern int (*chap_passwd_hook) __P((char *user, char *passwd)); - extern void (*multilink_join_hook) __P((void)); - -+#ifdef USE_EAPTLS -+extern int (*eaptls_passwd_hook) __P((char *user, char *passwd)); -+#endif -+ - /* Let a plugin snoop sent and received packets. Useful for L2TP */ - extern void (*snoop_recv_hook) __P((unsigned char *p, int len)); - extern void (*snoop_send_hook) __P((unsigned char *p, int len)); |