Merge pull request #307 from enaess/ppp-peap

[ppp.git] / pppd / peap.h

diff --git a/pppd/peap.h b/pppd/peap.h
new file mode 100644 (file)
index 0000000..49e28e8
--- /dev/null
+++ b/pppd/peap.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2011 Rustam Kovhaev. All rights reserved.
+ * Copyright (c) 2021 Eivind Næss. 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 PPP_PEAP_H
+#define        PPP_PEAP_H
+
+#define        PEAP_PHASE_1                    1
+#define        PEAP_PHASE_2                    2
+
+#define        PEAP_HEADERLEN                  6
+#define        PEAP_FRAGMENT_LENGTH_FIELD      4
+#define        PEAP_FLAGS_FIELD                1
+#define        PEAP_FLAGS_ACK                  0
+
+#define PEAP_CAPABILITIES_TYPE         254
+#define PEAP_CAPABILITIES_LEN          12
+
+#define PEAP_TLV_TYPE                  12
+#define PEAP_TLV_LENGTH_FIELD          56
+#define PEAP_TLV_SUBTYPE_REQUEST       0
+#define PEAP_TLV_SUBTYPE_RESPONSE      1
+#define PEAP_TLV_HEADERLEN             8
+#define PEAP_TLV_RESULT_LEN            7
+#define PEAP_TLV_LEN                   71
+
+/*
+ * Microsoft PEAP client/server never exchange
+ * outer TLVs during PEAP authentication
+ */
+#define        PEAP_TLV_DATA_LEN               61
+
+#define        PEAP_TLV_TK_LEN                 60
+#define        PEAP_TLV_ISK_LEN                32
+#define        PEAP_TLV_IPMKSEED_LEN           59
+#define        PEAP_TLV_TEMPKEY_LEN            40
+#define        PEAP_TLV_IPMK_LEN               40
+#define        PEAP_TLV_CMK_LEN                20
+#define        PEAP_TLV_NONCE_LEN              32
+#define        PEAP_TLV_COMP_MAC_LEN           20
+#define        PEAP_TLV_CSK_LEN                128
+#define        PEAP_TLV_TK_SEED_LABEL          "client EAP encryption"
+#define        PEAP_TLV_IPMK_SEED_LABEL        "Inner Methods Compound Keys"
+#define        PEAP_TLV_CSK_SEED_LABEL         "Session Key Generating Function"
+
+#define        PEAP_S_FLAG_SET                 0x20
+#define        PEAP_L_FLAG_SET                 0x80
+#define        PEAP_LM_FLAG_SET                0xC0
+#define        PEAP_M_FLAG_SET                 0x40
+#define        PEAP_NO_FLAGS                   0x00
+
+#define        EAP_TLS_KEY_LEN                 0x40
+#define        TLS_RECORD_MAX_SIZE             0x4000
+
+struct peap_state;
+
+/**
+ * Initialize the PEAP structure
+ */
+int peap_init(struct peap_state** psm, const char *remote_name);
+
+/**
+ * Process a PEAP packet
+ */
+int peap_process(eap_state *esp, u_char id, u_char *inp, int len);
+
+/**
+ * Clean up the PEAP structure
+ */
+void peap_finish(struct peap_state **psm);
+
+#endif /* PPP_PEAP_H */