src/core/sip-sec-tls-dsk.c

   1 /**
   2  * @file sip-sec-tls-dsk.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2011 SIPE Project <http://sipe.sourceforge.net/>
   7  *
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  *
  23  *
  24  * Specification references:
  25  *
  26  *   - [MS-SIPAE]:    http://msdn.microsoft.com/en-us/library/cc431510.aspx
  27  *   - [MS-OCAUTHWS]: http://msdn.microsoft.com/en-us/library/ff595592.aspx
  28  *   - MS Tech-Ed Europe 2010 "UNC310: Microsoft Lync 2010 Technology Explained"
  29  *     http://ecn.channel9.msdn.com/o9/te/Europe/2010/pptx/unc310.pptx
  30  */
  31
  32 #include <glib.h>
  33
  34 #include "sipe-common.h"
  35 #include "sip-sec.h"
  36 #include "sip-sec-mech.h"
  37 #include "sip-sec-tls-dsk.h"
  38 #include "sipe-tls.h"
  39 #include "sipe-utils.h"
  40
  41 /* Security context for TLS-DSK */
  42 typedef struct _context_tls_dsk {
  43         struct sip_sec_context common;
  44         struct sipe_tls_state *state;
  45 } *context_tls_dsk;
  46
  47 /* sip-sec-mech.h API implementation for TLS-DSK */
  48
  49 static sip_uint32
  50 sip_sec_acquire_cred__tls_dsk(SipSecContext context,
  51                               SIPE_UNUSED_PARAMETER const char *domain,
  52                               SIPE_UNUSED_PARAMETER const char *username,
  53                               const char *password)
  54 {
  55         context_tls_dsk ctx = (context_tls_dsk)context;
  56
  57         ctx->state = sipe_tls_start((gpointer) password);
  58         if (ctx->state) {
  59                 /* Authentication not yet completed */
  60                 ctx->common.is_ready = FALSE;
  61
  62                 return SIP_SEC_E_OK;
  63         } else {
  64                 return SIP_SEC_E_INTERNAL_ERROR;
  65         }
  66 }
  67
  68 static sip_uint32
  69 sip_sec_init_sec_context__tls_dsk(SipSecContext context,
  70                                   SipSecBuffer in_buff,
  71                                   SipSecBuffer *out_buff,
  72                                   SIPE_UNUSED_PARAMETER const char *service_name)
  73 {
  74         context_tls_dsk ctx = (context_tls_dsk) context;
  75         struct sipe_tls_state *state = ctx->state;
  76
  77         state->in_buffer = in_buff.value;
  78         state->in_length = in_buff.length;
  79
  80         if (sipe_tls_next(state)) {
  81                 if (state->session_key) {
  82                         /* Authentication is completed */
  83                         ctx->common.is_ready = TRUE;
  84
  85                         /* TBD... copy session key */
  86
  87                         sipe_tls_free(state);
  88                         ctx->state = NULL;
  89                 } else {
  90                         out_buff->value  = state->out_buffer;
  91                         out_buff->length = state->out_length;
  92                         /* we take ownership of the buffer */
  93                         state->out_buffer = NULL;
  94                 }
  95         } else {
  96                 sipe_tls_free(state);
  97                 ctx->state = NULL;
  98         }
  99
 100         return((ctx->common.is_ready || ctx->state) ? SIP_SEC_E_OK : SIP_SEC_E_INTERNAL_ERROR);
 101 }
 102
 103 static sip_uint32
 104 sip_sec_make_signature__tls_dsk(SipSecContext context,
 105                                 const char *message,
 106                                 SipSecBuffer *signature)
 107 {
 108         context_tls_dsk ctx = (context_tls_dsk) context;
 109
 110         /* temporary */
 111         (void)ctx;
 112         (void)message;
 113         (void)signature;
 114
 115         return SIP_SEC_E_INTERNAL_ERROR;
 116 }
 117
 118 static sip_uint32
 119 sip_sec_verify_signature__tls_dsk(SipSecContext context,
 120                                   const char *message,
 121                                   SipSecBuffer signature)
 122 {
 123         context_tls_dsk ctx = (context_tls_dsk) context;
 124
 125         /* temporary */
 126         (void)ctx;
 127         (void)message;
 128         (void)signature;
 129
 130         return SIP_SEC_E_INTERNAL_ERROR;
 131 }
 132
 133 static void
 134 sip_sec_destroy_sec_context__tls_dsk(SipSecContext context)
 135 {
 136         context_tls_dsk ctx = (context_tls_dsk) context;
 137
 138         sipe_tls_free(ctx->state);
 139         g_free(ctx);
 140 }
 141
 142 SipSecContext
 143 sip_sec_create_context__tls_dsk(SIPE_UNUSED_PARAMETER guint type)
 144 {
 145         context_tls_dsk context = g_malloc0(sizeof(struct _context_tls_dsk));
 146         if (!context) return(NULL);
 147
 148         context->common.acquire_cred_func     = sip_sec_acquire_cred__tls_dsk;
 149         context->common.init_context_func     = sip_sec_init_sec_context__tls_dsk;
 150         context->common.destroy_context_func  = sip_sec_destroy_sec_context__tls_dsk;
 151         context->common.make_signature_func   = sip_sec_make_signature__tls_dsk;
 152         context->common.verify_signature_func = sip_sec_verify_signature__tls_dsk;
 153
 154         return((SipSecContext) context);
 155 }
 156
 157 /*
 158   Local Variables:
 159   mode: c
 160   c-file-style: "bsd"
 161   indent-tabs-mode: t
 162   tab-width: 8
 163   End:
 164 */