notion/notion.c

   1 /*
   2  * notion/notion/notion.c
   3  *
   4  * Copyright (c) the Notion team 2013.
   5  * Copyright (c) Tuomo Valkonen 1999-2009.
   6  *
   7  * See the included file LICENSE for details.
   8  */
   9
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12 #include <unistd.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include <sys/types.h>
  16 #include <sys/wait.h>
  17 #include <sys/stat.h>
  18 #include <fcntl.h>
  19
  20 #include <libtu/util.h>
  21 #include <libtu/optparser.h>
  22 #include <libtu/errorlog.h>
  23 #include <libtu/prefix.h>
  24 #include <libextl/readconfig.h>
  25 #include <libmainloop/exec.h>
  26
  27 #include <ioncore/common.h>
  28 #include <ioncore/global.h>
  29 #include <ioncore/ioncore.h>
  30 #include <ioncore/exec.h>
  31 #include <ioncore/event.h>
  32 #include "../version.h"
  33
  34 #ifndef P_tmpdir
  35 #define P_tmpdir "/tmp"
  36 #endif
  37
  38 /* Options. Getopt is not used because getopt_long is quite gnu-specific
  39  * and they don't know of '-display foo' -style args anyway.
  40  * Instead, I've reinvented the wheel in libtu :(.
  41  */
  42 static OptParserOpt ion_opts[]={
  43     {OPT_ID('d'), "display",  OPT_ARG, "host:dpy.scr",
  44      DUMMY_TR("X display to use")},
  45
  46     {'c', "conffile", OPT_ARG, "config_file",
  47      DUMMY_TR("Configuration file")},
  48
  49     {'s', "searchdir", OPT_ARG, "dir",
  50      DUMMY_TR("Add directory to search path")},
  51
  52     {OPT_ID('o'), "oneroot",  0, NULL,
  53      DUMMY_TR("Manage default screen only")},
  54
  55     {OPT_ID('s'), "session",  OPT_ARG, "session_name",
  56      DUMMY_TR("Name of session (affects savefiles)")},
  57
  58     {OPT_ID('S'), "smclientid", OPT_ARG, "client_id",
  59      DUMMY_TR("Session manager client ID")},
  60
  61     {OPT_ID('N'), "noerrorlog", 0, NULL,
  62      DUMMY_TR("Do not create startup error log and display it "
  63               "with xmessage.")},
  64
  65     {'h', "help", 0, NULL,
  66      DUMMY_TR("Show this help")},
  67
  68     {'V', "version", 0, NULL,
  69      DUMMY_TR("Show program version")},
  70
  71     {OPT_ID('a'), "about", 0, NULL,
  72      DUMMY_TR("Show about text")},
  73
  74     END_OPTPARSEROPTS
  75 };
  76
  77
  78 void check_new_user_help()
  79 {
  80     const char *userdir=extl_userdir();
  81     char *oldbeard=NULL;
  82     char *tmp=NULL, *cmd=NULL;
  83     bool ret;
  84
  85     if(userdir==NULL){
  86         warn(TR("Could not get user configuration file directory."));
  87         return;
  88     }
  89
  90     libtu_asprintf(&oldbeard, "%s/.welcome_msg_displayed", userdir);
  91
  92     if(oldbeard==NULL)
  93         return;
  94
  95     if(access(oldbeard, F_OK)==0){
  96         free(oldbeard);
  97         return;
  98     }
  99
 100     libtu_asprintf(&tmp, TR("%s/welcome.txt"), SHAREDIR);
 101
 102     if(tmp!=NULL){
 103         if(access(tmp, F_OK)==0)
 104             libtu_asprintf(&cmd, "%s %s", CF_XMESSAGE, tmp);
 105         else
 106             libtu_asprintf(&cmd, "%s %s/welcome.txt", CF_XMESSAGE, SHAREDIR);
 107
 108         free(tmp);
 109
 110         if(cmd!=NULL){
 111             ret=ioncore_exec(cmd);
 112
 113             free(cmd);
 114
 115             if(ret){
 116                 /* This should actually be done when less or xmessage returns,
 117                  * but that would mean yet another script...
 118                  */
 119                 mkdir(userdir, 0700);
 120                 if(open(oldbeard, O_CREAT|O_RDWR, 0600)<0)
 121                     warn_err_obj(oldbeard);
 122             }
 123         }
 124     }
 125
 126     free(oldbeard);
 127 }
 128
 129
 130 static void help()
 131 {
 132     int i;
 133     printf(TR("Usage: %s [options]\n\n"), libtu_progname());
 134     for(i=0; ion_opts[i].descr!=NULL; i++)
 135         ion_opts[i].descr=TR(ion_opts[i].descr);
 136     optparser_printhelp(OPTP_MIDLONG, ion_opts);
 137     printf("\n");
 138 }
 139
 140
 141 int main(int argc, char*argv[])
 142 {
 143     const char *cfgfile="cfg_notion";
 144     const char *display=NULL;
 145     char *cmd=NULL;
 146     int stflags=0;
 147     int opt;
 148     ErrorLog el;
 149     FILE *ef=NULL;
 150     char *efnam=NULL;
 151     bool may_continue=FALSE;
 152     bool noerrorlog=FALSE;
 153     char *localedir;
 154
 155     libtu_init(argv[0]);
 156
 157 #ifdef CF_RELOCATABLE_BIN_LOCATION
 158     prefix_set(argv[0], CF_RELOCATABLE_BIN_LOCATION);
 159 #endif
 160
 161     localedir=prefix_add(LOCALEDIR);
 162
 163     if(!ioncore_init(CF_EXECUTABLE, argc, argv, localedir))
 164         return EXIT_FAILURE;
 165
 166     if(localedir!=NULL)
 167         free(localedir);
 168
 169     prefix_wrap_simple(extl_add_searchdir, EXTRABINDIR); /* ion-completefile */
 170     prefix_wrap_simple(extl_add_searchdir, MODULEDIR);
 171     prefix_wrap_simple(extl_add_searchdir, ETCDIR);
 172     prefix_wrap_simple(extl_add_searchdir, SHAREDIR);
 173     prefix_wrap_simple(extl_add_searchdir, LCDIR);
 174     extl_set_userdirs(CF_EXECUTABLE);
 175
 176     optparser_init(argc, argv, OPTP_MIDLONG, ion_opts);
 177
 178     while((opt=optparser_get_opt())){
 179         switch(opt){
 180         case OPT_ID('d'):
 181             display=optparser_get_arg();
 182             break;
 183         case 'c':
 184             cfgfile=optparser_get_arg();
 185             break;
 186         case 's':
 187             extl_add_searchdir(optparser_get_arg());
 188             break;
 189         case OPT_ID('S'):
 190             ioncore_g.sm_client_id=optparser_get_arg();
 191             break;
 192         case OPT_ID('o'):
 193             stflags|=IONCORE_STARTUP_ONEROOT;
 194             break;
 195         case OPT_ID('s'):
 196             extl_set_sessiondir(optparser_get_arg());
 197             break;
 198         case OPT_ID('N'):
 199             noerrorlog=TRUE;
 200             break;
 201         case 'h':
 202             help();
 203             return EXIT_SUCCESS;
 204         case 'V':
 205             printf("%s\n", ION_VERSION);
 206             return EXIT_SUCCESS;
 207         case OPT_ID('a'):
 208             printf("%s\n", ioncore_aboutmsg());
 209             return EXIT_SUCCESS;
 210         default:
 211             warn(TR("Invalid command line."));
 212             help();
 213             return EXIT_FAILURE;
 214         }
 215     }
 216
 217     if(!noerrorlog){
 218         /* We may have to pass the file to xmessage so just using tmpfile()
 219          * isn't sufficient.
 220          */
 221         libtu_asprintf(&efnam, "%s/ion-%d-startup-errorlog", P_tmpdir,
 222                        getpid());
 223         if(efnam==NULL){
 224             warn_err();
 225         }else{
 226             ef=fopen(efnam, "wt");
 227             if(ef==NULL){
 228                 warn_err_obj(efnam);
 229                 free(efnam);
 230                 efnam=NULL;
 231             }else{
 232                 cloexec_braindamage_fix(fileno(ef));
 233                 fprintf(ef, TR("Notion startup error log:\n"));
 234                 errorlog_begin_file(&el, ef);
 235             }
 236         }
 237     }
 238
 239     if(ioncore_startup(display, cfgfile, stflags))
 240         may_continue=TRUE;
 241
 242     if(!may_continue)
 243         warn(TR("Refusing to start due to encountered errors."));
 244     else
 245         check_new_user_help();
 246
 247     if(ef!=NULL){
 248         pid_t pid=-1;
 249         if(errorlog_end(&el) && ioncore_g.dpy!=NULL){
 250             fclose(ef);
 251             pid=fork();
 252             if(pid==0){
 253                 ioncore_setup_display(DefaultScreen(ioncore_g.dpy));
 254                 if(!may_continue)
 255                     XCloseDisplay(ioncore_g.dpy);
 256                 else
 257                     close(ioncore_g.conn);
 258                 libtu_asprintf(&cmd, CF_XMESSAGE " %s", efnam);
 259                 if(cmd==NULL){
 260                     warn_err();
 261                 }else if(system(cmd)==-1){
 262                     warn_err_obj(cmd);
 263                 }
 264                 unlink(efnam);
 265                 exit(EXIT_SUCCESS);
 266             }
 267             if(!may_continue && pid>0)
 268                 waitpid(pid, NULL, 0);
 269         }else{
 270             fclose(ef);
 271         }
 272         if(pid<0)
 273             unlink(efnam);
 274         free(efnam);
 275     }
 276
 277     if(!may_continue)
 278         return EXIT_FAILURE;
 279
 280     ioncore_mainloop();
 281
 282     /* The code should never return here */
 283     return EXIT_SUCCESS;
 284 }