source/lib/launchd.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Launchd integration wrapper API
   4
   5    Copyright (C) 2007 James Peach
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23 #include "smb_launchd.h"
  24
  25 /* launchd source code and documentation is available here:
  26  *      http://launchd.macosforge.org/
  27  */
  28
  29 #if defined(WITH_LAUNCHD_SUPPORT)
  30
  31 #include <launch.h>
  32 #include <stdarg.h>
  33
  34 typedef void (*launchd_iterator)(launch_data_t, const char*, void*);
  35
  36 #define LAUNCHD_TRACE_LEVEL 10
  37
  38  void smb_launchd_checkout(struct smb_launch_info *linfo)
  39 {
  40         talloc_free(linfo->socket_list);
  41 }
  42
  43 static void pull_launch_sockets(launch_data_t key,
  44                                 const char *name,
  45                                 struct smb_launch_info *linfo)
  46 {
  47         launch_data_type_t type;
  48
  49         type = launch_data_get_type(key);
  50         DEBUG(LAUNCHD_TRACE_LEVEL,
  51                 ("Searching item name='%s' type=%d for sockets\n",
  52                  name ? name : "", (int)type));
  53
  54         switch (type) {
  55         case LAUNCH_DATA_FD:
  56                 if (!linfo->socket_list) {
  57                         /* We are counting the number of sockets. */
  58                         linfo->num_sockets++;
  59                 } else {
  60                         /* We are collecting the socket fds. */
  61                         int fd = launch_data_get_fd(key);
  62
  63                         linfo->socket_list[linfo->num_sockets] = fd;
  64                         linfo->num_sockets++;
  65                         DEBUG(LAUNCHD_TRACE_LEVEL,
  66                                 ("Added fd=%d to launchd set\n", fd));
  67                 }
  68                 return;
  69         case LAUNCH_DATA_ARRAY:
  70         {
  71                 int i;
  72                 launch_data_t item;
  73
  74                 for (i = 0; i < launch_data_array_get_count(key); ++i) {
  75                         item = launch_data_array_get_index(key, i);
  76                         pull_launch_sockets(item, name, linfo);
  77                 }
  78                 return;
  79         }
  80         case LAUNCH_DATA_DICTIONARY:
  81                 launch_data_dict_iterate(key,
  82                         (launchd_iterator)pull_launch_sockets, linfo);
  83                 return;
  84         default:
  85                 return;
  86         }
  87 }
  88
  89  BOOL smb_launchd_checkin_names(struct smb_launch_info *linfo, ...)
  90 {
  91         launch_data_t msg;
  92         launch_data_t resp;
  93         launch_data_t item;
  94         BOOL is_launchd = False;
  95
  96         ZERO_STRUCTP(linfo);
  97
  98         msg = launch_data_new_string(LAUNCH_KEY_CHECKIN);
  99         resp = launch_msg(msg);
 100         if (resp == NULL) {
 101                 /* IPC to launchd failed. */
 102                 launch_data_free(msg);
 103                 return is_launchd;
 104         }
 105
 106         if (launch_data_get_type(resp) == LAUNCH_DATA_ERRNO) {
 107                 errno = launch_data_get_errno(resp);
 108                 goto done;
 109         }
 110
 111         /* At this point, we know we are running under launchd. */
 112         linfo->idle_timeout_secs = 600;
 113         is_launchd = True;
 114
 115         if ((item = launch_data_dict_lookup(resp, LAUNCH_JOBKEY_TIMEOUT))) {
 116                 linfo->idle_timeout_secs = launch_data_get_integer(item);
 117         }
 118
 119         if ((item = launch_data_dict_lookup(resp, LAUNCH_JOBKEY_SOCKETS))) {
 120                 int count = 0;
 121                 const char * sockname = NULL;
 122                 launch_data_t sockdata;
 123                 va_list args;
 124
 125                 /* Figure out the maximum number of sockets. */
 126                 va_start(args, linfo);
 127                 while ((sockname = va_arg(args, const char *))) {
 128                     ++count;
 129                 }
 130                 va_end(args);
 131
 132                 DEBUG(LAUNCHD_TRACE_LEVEL, ("Found %d launchd sockets\n",
 133                                         linfo->num_sockets));
 134
 135                 if (launch_data_dict_get_count(item) < count) {
 136                         DEBUG(0, ("%d launchd sockets requested, "
 137                             "but only %d are available\n",
 138                             count, launch_data_dict_get_count(item)));
 139                 }
 140
 141                 linfo->socket_list = TALLOC_ARRAY(NULL, int, count);
 142                 if (linfo->socket_list == NULL) {
 143                         goto done;
 144                 }
 145
 146                 linfo->num_sockets = 0;
 147                 va_start(args, linfo);
 148                 while ((sockname = va_arg(args, const char *))) {
 149                     sockdata = launch_data_dict_lookup(item, sockname);
 150
 151                     pull_launch_sockets(sockdata, sockname, linfo);
 152                     DEBUG(LAUNCHD_TRACE_LEVEL,
 153                             ("Added launchd socket \"%s\"\n", sockname));
 154                 }
 155
 156                 SMB_ASSERT(count >= linfo->num_sockets);
 157         }
 158
 159 done:
 160         launch_data_free(msg);
 161         launch_data_free(resp);
 162         return is_launchd;
 163 }
 164
 165  BOOL smb_launchd_checkin(struct smb_launch_info *linfo)
 166 {
 167         launch_data_t msg;
 168         launch_data_t resp;
 169         launch_data_t item;
 170         BOOL is_launchd = False;
 171
 172         ZERO_STRUCTP(linfo);
 173
 174         msg = launch_data_new_string(LAUNCH_KEY_CHECKIN);
 175         resp = launch_msg(msg);
 176         if (resp == NULL) {
 177                 /* IPC to launchd failed. */
 178                 launch_data_free(msg);
 179                 return is_launchd;
 180         }
 181
 182         if (launch_data_get_type(resp) == LAUNCH_DATA_ERRNO) {
 183                 errno = launch_data_get_errno(resp);
 184                 goto done;
 185         }
 186
 187         /* At this point, we know we are running under launchd. */
 188         linfo->idle_timeout_secs = 600;
 189         is_launchd = True;
 190
 191         if ((item = launch_data_dict_lookup(resp, LAUNCH_JOBKEY_TIMEOUT))) {
 192                 linfo->idle_timeout_secs = launch_data_get_integer(item);
 193         }
 194
 195         if ((item = launch_data_dict_lookup(resp, LAUNCH_JOBKEY_SOCKETS))) {
 196                 int count;
 197
 198                 pull_launch_sockets(item, NULL, linfo);
 199                 DEBUG(LAUNCHD_TRACE_LEVEL, ("Found %d launchd sockets\n",
 200                                         linfo->num_sockets));
 201
 202                 count = linfo->num_sockets;
 203                 linfo->socket_list = TALLOC_ARRAY(NULL, int, count);
 204                 if (linfo->socket_list == NULL) {
 205                         goto done;
 206                 }
 207
 208                 linfo->num_sockets = 0;
 209                 pull_launch_sockets(item, NULL, linfo);
 210
 211                 DEBUG(LAUNCHD_TRACE_LEVEL, ("Added %d launchd sockets\n",
 212                                         linfo->num_sockets));
 213
 214                 SMB_ASSERT(count == linfo->num_sockets);
 215         }
 216
 217 done:
 218         launch_data_free(msg);
 219         launch_data_free(resp);
 220         return is_launchd;
 221 }
 222
 223 #else /* defined(WITH_LAUNCHD_SUPPORT) */
 224
 225  BOOL smb_launchd_checkin(struct smb_launch_info * UNUSED(linfo))
 226 {
 227         ZERO_STRUCTP(linfo);
 228         return False;
 229 }
 230
 231  BOOL smb_launchd_checkin_names(struct smb_launch_info * UNUSED(linfo), ...)
 232 {
 233         ZERO_STRUCTP(linfo);
 234         return False;
 235 }
 236
 237  void smb_launchd_checkout(struct smb_launch_info * UNUSED(linfo))
 238 {
 239 }
 240
 241 #endif /* defined(WITH_LAUNCHD_SUPPORT) */
 242