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   1 /*
   2  * Amanda, The Advanced Maryland Automatic Network Disk Archiver
   3  * Copyright (c) 1999 University of Maryland at College Park
   4  * Copyright (c) 2007-2012 Zmanda, Inc.  All Rights Reserved.
   5  * All Rights Reserved.
   6  *
   7  * Permission to use, copy, modify, distribute, and sell this software and its
   8  * documentation for any purpose is hereby granted without fee, provided that
   9  * the above copyright notice appear in all copies and that both that
  10  * copyright notice and this permission notice appear in supporting
  11  * documentation, and that the name of U.M. not be used in advertising or
  12  * publicity pertaining to distribution of the software without specific,
  13  * written prior permission.  U.M. makes no representations about the
  14  * suitability of this software for any purpose.  It is provided "as is"
  15  * without express or implied warranty.
  16  *
  17  * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
  19  * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  20  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  21  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  22  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  23  *
  24  * Authors: the Amanda Development Team.  Its members are listed in a
  25  * file named AUTHORS, in the root directory of this distribution.
  26  */
  27 /*
  28  * $Id: security.c,v 1.28 2006/05/25 01:47:12 johnfranks Exp $
  29  *
  30  * Security driver interface for the Amanda backup system.
  31  */
  32
  33 #include "amanda.h"
  34 #include "arglist.h"
  35 #include "packet.h"
  36 #include "security.h"
  37
  38 #ifdef BSD_SECURITY
  39 extern const security_driver_t bsd_security_driver;
  40 #endif
  41 #ifdef KRB5_SECURITY
  42 extern const security_driver_t krb5_security_driver;
  43 #endif
  44 #ifdef RSH_SECURITY
  45 extern const security_driver_t rsh_security_driver;
  46 #endif
  47 #ifdef SSH_SECURITY
  48 extern const security_driver_t ssh_security_driver;
  49 #endif
  50 #ifdef BSDTCP_SECURITY
  51 extern const security_driver_t bsdtcp_security_driver;
  52 #endif
  53 #ifdef BSDUDP_SECURITY
  54 extern const security_driver_t bsdudp_security_driver;
  55 #endif
  56 extern const security_driver_t local_security_driver;
  57
  58 static const security_driver_t *drivers[] = {
  59 #ifdef BSD_SECURITY
  60     &bsd_security_driver,
  61 #endif
  62 #ifdef KRB5_SECURITY
  63     &krb5_security_driver,
  64 #endif
  65 #ifdef RSH_SECURITY
  66     &rsh_security_driver,
  67 #endif
  68 #ifdef SSH_SECURITY
  69     &ssh_security_driver,
  70 #endif
  71 #ifdef BSDTCP_SECURITY
  72     &bsdtcp_security_driver,
  73 #endif
  74 #ifdef BSDUDP_SECURITY
  75     &bsdudp_security_driver,
  76 #endif
  77     &local_security_driver,
  78 };
  79 #define NDRIVERS        (size_t)(sizeof(drivers) / sizeof(drivers[0]))
  80
  81 /*
  82  * Given a name of a security type, returns the driver structure
  83  */
  84 const security_driver_t *
  85 security_getdriver(
  86     const char *        name)
  87 {
  88     size_t i;
  89
  90     assert(name != NULL);
  91
  92     for (i = 0; i < NDRIVERS; i++) {
  93         if (strcasecmp(name, drivers[i]->name) == 0) {
  94             dbprintf(_("security_getdriver(name=%s) returns %p\n"),
  95                       name, drivers[i]);
  96             return (drivers[i]);
  97         }
  98     }
  99     dbprintf(_("security_getdriver(name=%s) returns NULL\n"), name);
 100     return (NULL);
 101 }
 102
 103 /*
 104  * For the drivers: initialize the common part of a security_handle_t
 105  */
 106 void
 107 security_handleinit(
 108     security_handle_t *         handle,
 109     const security_driver_t *   driver)
 110 {
 111     dbprintf(_("security_handleinit(handle=%p, driver=%p (%s))\n"),
 112               handle, driver, driver->name);
 113     handle->driver = driver;
 114     handle->error = stralloc(_("unknown protocol error"));
 115 }
 116
 117 printf_arglist_function1(void security_seterror, security_handle_t *, handle,
 118     const char *, fmt)
 119 {
 120     static char buf[1024];
 121     va_list argp;
 122
 123     assert(handle->error != NULL);
 124     arglist_start(argp, fmt);
 125     g_vsnprintf(buf, SIZEOF(buf), fmt, argp);
 126     arglist_end(argp);
 127     handle->error = newstralloc(handle->error, buf);
 128     dbprintf(_("security_seterror(handle=%p, driver=%p (%s) error=%s)\n"),
 129               handle, handle->driver,
 130               handle->driver->name, handle->error);
 131 }
 132
 133 void
 134 security_close(
 135     security_handle_t * handle)
 136 {
 137     dbprintf(_("security_close(handle=%p, driver=%p (%s))\n"),
 138               handle, handle->driver,
 139               handle->driver->name);
 140     amfree(handle->error);
 141     (*handle->driver->close)(handle);
 142 }
 143
 144 /*
 145  * For the drivers: initialize the common part of a security_stream_t
 146  */
 147 void
 148 security_streaminit(
 149     security_stream_t *         stream,
 150     const security_driver_t *   driver)
 151 {
 152     dbprintf(_("security_streaminit(stream=%p, driver=%p (%s))\n"),
 153               stream, driver, driver->name);
 154     stream->driver = driver;
 155     stream->error = stralloc(_("unknown stream error"));
 156 }
 157
 158 printf_arglist_function1(void security_stream_seterror,
 159     security_stream_t *, stream,
 160     const char *, fmt)
 161 {
 162     static char buf[1024];
 163     va_list argp;
 164
 165     arglist_start(argp, fmt);
 166     g_vsnprintf(buf, SIZEOF(buf), fmt, argp);
 167     arglist_end(argp);
 168     stream->error = newstralloc(stream->error, buf);
 169     dbprintf(_("security_stream_seterr(%p, %s)\n"), stream, stream->error);
 170 }
 171
 172 void
 173 security_stream_close(
 174     security_stream_t * stream)
 175 {
 176     dbprintf(_("security_stream_close(%p)\n"), stream);
 177     amfree(stream->error);
 178     (*stream->driver->stream_close)(stream);
 179 }