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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  * All Rights Reserved.
   5  *
   6  * Permission to use, copy, modify, distribute, and sell this software and its
   7  * documentation for any purpose is hereby granted without fee, provided that
   8  * the above copyright notice appear in all copies and that both that
   9  * copyright notice and this permission notice appear in supporting
  10  * documentation, and that the name of U.M. not be used in advertising or
  11  * publicity pertaining to distribution of the software without specific,
  12  * written prior permission.  U.M. makes no representations about the
  13  * suitability of this software for any purpose.  It is provided "as is"
  14  * without express or implied warranty.
  15  *
  16  * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
  18  * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  19  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  20  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  *
  23  * Authors: the Amanda Development Team.  Its members are listed in a
  24  * file named AUTHORS, in the root directory of this distribution.
  25  */
  26 /*
  27  * $Id: security.c,v 1.28 2006/05/25 01:47:12 johnfranks Exp $
  28  *
  29  * Security driver interface for the Amanda backup system.
  30  */
  31
  32 #include "amanda.h"
  33 #include "arglist.h"
  34 #include "packet.h"
  35 #include "security.h"
  36
  37 #ifdef BSD_SECURITY
  38 extern const security_driver_t bsd_security_driver;
  39 #endif
  40 #ifdef KRB4_SECURITY
  41 extern const security_driver_t krb4_security_driver;
  42 #endif
  43 #ifdef KRB5_SECURITY
  44 extern const security_driver_t krb5_security_driver;
  45 #endif
  46 #ifdef RSH_SECURITY
  47 extern const security_driver_t rsh_security_driver;
  48 #endif
  49 #ifdef SSH_SECURITY
  50 extern const security_driver_t ssh_security_driver;
  51 #endif
  52 #ifdef BSDTCP_SECURITY
  53 extern const security_driver_t bsdtcp_security_driver;
  54 #endif
  55 #ifdef BSDUDP_SECURITY
  56 extern const security_driver_t bsdudp_security_driver;
  57 #endif
  58 extern const security_driver_t local_security_driver;
  59
  60 static const security_driver_t *drivers[] = {
  61 #ifdef BSD_SECURITY
  62     &bsd_security_driver,
  63 #endif
  64 #ifdef KRB4_SECURITY
  65     &krb4_security_driver,
  66 #endif
  67 #ifdef KRB5_SECURITY
  68     &krb5_security_driver,
  69 #endif
  70 #ifdef RSH_SECURITY
  71     &rsh_security_driver,
  72 #endif
  73 #ifdef SSH_SECURITY
  74     &ssh_security_driver,
  75 #endif
  76 #ifdef BSDTCP_SECURITY
  77     &bsdtcp_security_driver,
  78 #endif
  79 #ifdef BSDUDP_SECURITY
  80     &bsdudp_security_driver,
  81 #endif
  82     &local_security_driver,
  83 };
  84 #define NDRIVERS        (size_t)(sizeof(drivers) / sizeof(drivers[0]))
  85
  86 /*
  87  * Given a name of a security type, returns the driver structure
  88  */
  89 const security_driver_t *
  90 security_getdriver(
  91     const char *        name)
  92 {
  93     size_t i;
  94
  95     assert(name != NULL);
  96
  97     for (i = 0; i < NDRIVERS; i++) {
  98         if (strcasecmp(name, drivers[i]->name) == 0) {
  99             dbprintf(_("security_getdriver(name=%s) returns %p\n"),
 100                       name, drivers[i]);
 101             return (drivers[i]);
 102         }
 103     }
 104     dbprintf(_("security_getdriver(name=%s) returns NULL\n"), name);
 105     return (NULL);
 106 }
 107
 108 /*
 109  * For the drivers: initialize the common part of a security_handle_t
 110  */
 111 void
 112 security_handleinit(
 113     security_handle_t *         handle,
 114     const security_driver_t *   driver)
 115 {
 116     dbprintf(_("security_handleinit(handle=%p, driver=%p (%s))\n"),
 117               handle, driver, driver->name);
 118     handle->driver = driver;
 119     handle->error = stralloc(_("unknown protocol error"));
 120 }
 121
 122 printf_arglist_function1(void security_seterror, security_handle_t *, handle,
 123     const char *, fmt)
 124 {
 125     static char buf[1024];
 126     va_list argp;
 127
 128     assert(handle->error != NULL);
 129     arglist_start(argp, fmt);
 130     g_vsnprintf(buf, SIZEOF(buf), fmt, argp);
 131     arglist_end(argp);
 132     handle->error = newstralloc(handle->error, buf);
 133     dbprintf(_("security_seterror(handle=%p, driver=%p (%s) error=%s)\n"),
 134               handle, handle->driver,
 135               handle->driver->name, handle->error);
 136 }
 137
 138 void
 139 security_close(
 140     security_handle_t * handle)
 141 {
 142     dbprintf(_("security_close(handle=%p, driver=%p (%s))\n"),
 143               handle, handle->driver,
 144               handle->driver->name);
 145     amfree(handle->error);
 146     (*handle->driver->close)(handle);
 147 }
 148
 149 /*
 150  * For the drivers: initialize the common part of a security_stream_t
 151  */
 152 void
 153 security_streaminit(
 154     security_stream_t *         stream,
 155     const security_driver_t *   driver)
 156 {
 157     dbprintf(_("security_streaminit(stream=%p, driver=%p (%s))\n"),
 158               stream, driver, driver->name);
 159     stream->driver = driver;
 160     stream->error = stralloc(_("unknown stream error"));
 161 }
 162
 163 printf_arglist_function1(void security_stream_seterror,
 164     security_stream_t *, stream,
 165     const char *, fmt)
 166 {
 167     static char buf[1024];
 168     va_list argp;
 169
 170     arglist_start(argp, fmt);
 171     g_vsnprintf(buf, SIZEOF(buf), fmt, argp);
 172     arglist_end(argp);
 173     stream->error = newstralloc(stream->error, buf);
 174     dbprintf(_("security_stream_seterr(%p, %s)\n"), stream, stream->error);
 175 }
 176
 177 void
 178 security_stream_close(
 179     security_stream_t * stream)
 180 {
 181     dbprintf(_("security_stream_close(%p)\n"), stream);
 182     amfree(stream->error);
 183     (*stream->driver->stream_close)(stream);
 184 }