source3/services/svc_rcinit.c

   1
   2 /*
   3  *  Unix SMB/CIFS implementation.
   4  *  Service Control API Implementation
   5  *  Copyright (C) Gerald Carter                   2005.
   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
  24 /* Implementation for LSB compliant init scripts */
  25
  26 /*******************************************************************************
  27  Get the services information  by reading and parsing the shell scripts. These
  28  are symbolically linked into the  SVCCTL_SCRIPT_DIR  directory.
  29
  30  Get the names of the services/scripts to read from the smb.conf file.
  31 *******************************************************************************/
  32
  33 BOOL get_LSB_data(char *fname,Service_info *si )
  34 {
  35         pstring initdfile;
  36         char mybuffer[256];
  37         const char *tokenptr;
  38         char **qlines;
  39         int fd = -1;
  40         int nlines, *numlines,i,in_section,in_description;
  41
  42         pstrcpy(si->servicename,"");
  43         pstrcpy(si->servicetype,"EXTERNAL");
  44         pstrcpy(si->filename,fname);
  45         pstrcpy(si->provides,"");
  46         pstrcpy(si->dependencies,"");
  47         pstrcpy(si->shouldstart,"");
  48         pstrcpy(si->shouldstop,"");
  49         pstrcpy(si->requiredstart,"");
  50         pstrcpy(si->requiredstop,"");
  51         pstrcpy(si->description,"");
  52         pstrcpy(si->shortdescription,"");
  53
  54         numlines = &nlines;
  55         in_section = 0;
  56         in_description = 0;
  57
  58
  59         if( !fname || !*fname ) {
  60                 DEBUG(0, ("Must define an \"LSB-style init file\" to read.\n"));
  61                 return False;
  62         }
  63         pstrcpy(initdfile,dyn_LIBDIR);
  64         pstrcat(initdfile,SVCCTL_SCRIPT_DIR);
  65         pstrcat(initdfile,fname);
  66
  67         /* TODO  - should check to see if the file that we're trying to open is
  68            actually a script. If it's NOT, we should do something like warn,
  69            and not continue to try to find info we're looking for */
  70
  71         DEBUG(10, ("Opening [%s]\n", initdfile));
  72         fd = -1;
  73         fd = open(initdfile,O_RDONLY);
  74         *numlines = 0;
  75
  76         if (fd == -1) {
  77                 DEBUG(10, ("Couldn't open [%s]\n", initdfile));
  78                 return False;
  79         }
  80
  81         qlines = fd_lines_load(fd, numlines);
  82         DEBUGADD(10, ("Lines returned = [%d]\n", *numlines));
  83         close(fd);
  84
  85
  86         if (*numlines) {
  87
  88                 for(i = 0; i < *numlines; i++) {
  89
  90                         DEBUGADD(10, ("Line[%d] = %s\n", i, qlines[i]));
  91                         if (!in_section && (0==strwicmp("### BEGIN INIT INFO", qlines[i]))) {
  92                                 /* we now can look for params */
  93                                 DEBUGADD(10, ("Configuration information starts on line = [%d]\n", i));
  94                                 in_section = 1;
  95
  96                         } else if (in_section && (0==strwicmp("### END INIT INFO", qlines[i]))) {
  97                                 DEBUGADD(10, ("Configuration information ends on line = [%d]\n", i));
  98                                 DEBUGADD(10, ("Description is [%s]\n", si->description));
  99                                 in_description = 0;
 100                                 in_section = 0;
 101                                 break;
 102                         } else if (in_section) {
 103                                 tokenptr = qlines[i];
 104                                 if (in_description) {
 105                                         DEBUGADD(10, ("Processing DESCRIPTION [%d]\n", *tokenptr));
 106                                         if (tokenptr && (*tokenptr=='#') && (*(tokenptr+1)=='\t')) {
 107                                                 DEBUGADD(10, ("Adding to DESCRIPTION [%d]\n", *tokenptr));
 108                                                 pstrcat(si->description," ");
 109                                                 pstrcat(si->description,tokenptr+2);
 110                                                 continue;
 111                                         }
 112                                         in_description = 0;
 113                                         DEBUGADD(10, ("Not a description!\n"));
 114                                 }
 115                                 if (!next_token(&tokenptr,mybuffer," \t",sizeof(mybuffer))) {
 116                                         DEBUGADD(10, ("Invalid line [%d]\n", i));
 117                                         break; /* bad line? */
 118                                 }
 119                                 if (0 != strncmp(mybuffer,"#",1)) {
 120                                         DEBUGADD(10, ("Invalid line [%d], is %s\n", i,mybuffer));
 121                                         break;
 122                                 }
 123                                 if (!next_token(&tokenptr,mybuffer," \t",sizeof(mybuffer))) {
 124                                         DEBUGADD(10, ("Invalid token on line [%d]\n", i));
 125                                         break; /* bad line? */
 126                                 }
 127                                 DEBUGADD(10, ("Keyword is  [%s]\n", mybuffer));
 128                                 if (0==strwicmp(mybuffer,"Description:")) {
 129                                         while (tokenptr && *tokenptr && (strchr(" \t",*tokenptr))) {
 130                                                 tokenptr++;
 131                                         }
 132                                         pstrcpy(si->description,tokenptr);
 133                                         DEBUGADD(10, ("FOUND DESCRIPTION! Data is [%s]\n", tokenptr));
 134                                         in_description = 1;
 135                                 } else {
 136                                         while (tokenptr && *tokenptr && (strchr(" \t",*tokenptr))) {
 137                                                 tokenptr++;
 138                                         }
 139                                         DEBUGADD(10, ("Data is [%s]\n", tokenptr));
 140                                         in_description = 0;
 141
 142                                         /* save certain keywords, don't save others */
 143                                         if (0==strwicmp(mybuffer, "Provides:")) {
 144                                                 pstrcpy(si->provides,tokenptr);
 145                                                 pstrcpy(si->servicename,tokenptr);
 146                                         }
 147
 148                                         if (0==strwicmp(mybuffer, "Short-Description:")) {
 149                                                 pstrcpy(si->shortdescription,tokenptr);
 150                                         }
 151
 152                                         if (0==strwicmp(mybuffer, "Required-start:")) {
 153                                                 pstrcpy(si->requiredstart,tokenptr);
 154                                                 pstrcpy(si->dependencies,tokenptr);
 155                                         }
 156
 157                                         if (0==strwicmp(mybuffer, "Should-start:")) {
 158                                                 pstrcpy(si->shouldstart,tokenptr);
 159                                         }
 160                                 }
 161                         }
 162                 }
 163
 164                 file_lines_free(qlines);
 165                         return True;
 166         }
 167
 168         return False;
 169 }
 170
 171 /*********************************************************************
 172 *********************************************************************/
 173
 174 static WERROR rcinit_stop( const char *service, SERVICE_STATUS *status )
 175 {
 176         pstring command;
 177         int ret, fd;
 178
 179         pstr_sprintf( command, "%s/%s/%s stop", dyn_LIBDIR, SVCCTL_SCRIPT_DIR, service );
 180
 181         /* we've already performed the access check when the service was opened */
 182
 183         become_root();
 184         ret = smbrun( command , &fd );
 185         unbecome_root();
 186
 187         DEBUGADD(5, ("rcinit_start: [%s] returned [%d]\n", command, ret));
 188         close(fd);
 189
 190         ZERO_STRUCTP( status );
 191         status->type = 0x0020;
 192         status->state = (ret == 0 ) ? 0x0001 : 0x0004;
 193         status->controls_accepted = 0x0005;
 194
 195         return ( ret == 0 ) ? WERR_OK : WERR_ACCESS_DENIED;
 196 }
 197
 198 /*********************************************************************
 199 *********************************************************************/
 200
 201 static WERROR rcinit_start( const char *service )
 202 {
 203         pstring command;
 204         int ret, fd;
 205
 206         pstr_sprintf( command, "%s/%s/%s start", dyn_LIBDIR, SVCCTL_SCRIPT_DIR, service );
 207
 208         /* we've already performed the access check when the service was opened */
 209
 210         become_root();
 211         ret = smbrun( command , &fd );
 212         unbecome_root();
 213
 214         DEBUGADD(5, ("rcinit_start: [%s] returned [%d]\n", command, ret));
 215         close(fd);
 216
 217         return ( ret == 0 ) ? WERR_OK : WERR_ACCESS_DENIED;
 218 }
 219
 220 /*********************************************************************
 221 *********************************************************************/
 222
 223 static WERROR rcinit_status( const char *service, SERVICE_STATUS *status )
 224 {
 225         pstring command;
 226         int ret, fd;
 227
 228         pstr_sprintf( command, "%s/%s/%s status", dyn_LIBDIR, SVCCTL_SCRIPT_DIR, service );
 229
 230         /* we've already performed the access check when the service was opened */
 231         /* assume as return code of 0 means that the service is ok.  Anything else
 232            is STOPPED */
 233
 234         become_root();
 235         ret = smbrun( command , &fd );
 236         unbecome_root();
 237
 238         DEBUGADD(5, ("rcinit_start: [%s] returned [%d]\n", command, ret));
 239         close(fd);
 240
 241         ZERO_STRUCTP( status );
 242         status->type = 0x0020;
 243         status->state = (ret == 0 ) ? 0x0004 : 0x0001;
 244         status->controls_accepted = 0x0005;
 245
 246         return WERR_OK;
 247 }
 248
 249 /*********************************************************************
 250 *********************************************************************/
 251
 252 /* struct for svcctl control to manipulate rcinit service */
 253
 254 SERVICE_CONTROL_OPS rcinit_svc_ops = {
 255         rcinit_stop,
 256         rcinit_start,
 257         rcinit_status
 258 };