src/client/cmdline/main.c

   1 /* $Id$
   2  * client cmdline interface for libcaptive
   3  * Copyright (C) 2002-2003 Jan Kratochvil <project-captive@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include <glib/gmessages.h>
  23 #include <stdlib.h>
  24 #include <glib/giochannel.h>
  25 #include <glib/gerror.h>
  26 #include <popt.h>
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include <locale.h>
  30
  31 #include <captive/client-vfs.h>
  32
  33 #include "main.h"       /* self */
  34 #include "cmd_shell.h"
  35 #include "cmd_cd.h"
  36 #include "cmd_lcd.h"
  37 #include "cmd_ls.h"
  38 #include "cmd_get.h"
  39 #include "cmd_put.h"
  40 #include "cmd_info.h"
  41 #include "cmd_volume.h"
  42 #include "cmd_rm.h"
  43 #include "cmd_mv.h"
  44 #include "cmd_mkdir.h"
  45 #include "cmd_rmdir.h"
  46 #include "cmd_commit.h"
  47 #include "cmd_open.h"
  48 #include "cmd_create.h"
  49 #include "cmd_close.h"
  50 #include "cmd_quit.h"
  51 #include "cmd_help.h"
  52
  53
  54 CaptiveVfsObject *cmdline_captive_vfs_object;
  55
  56
  57 GQuark cmdline_main_error_quark(void)
  58 {
  59 GQuark r=0;
  60
  61         if (!r)
  62                 r=g_quark_from_static_string("cmdline-main");
  63
  64         return r;
  65 }
  66
  67
  68 static const struct poptOption popt_table[]={
  69                 CAPTIVE_POPT_INCLUDE,
  70                 POPT_AUTOHELP
  71                 POPT_TABLEEND
  72                 };
  73
  74 const struct cmdline_command cmdline_command_table[]={
  75                 /* First entry is the default if no command name was specified. */
  76                 { "shell" ,N_("Interactive commands shell.")                                ,cmd_shell_table ,cmd_shell ,0,0 },
  77                 { "cd"    ,N_("Print or change current guest-os directory[1].")             ,cmd_cd_table    ,cmd_cd    ,0,1 },
  78                 { "lcd"   ,N_("Print or change current host-os  directory[1].")             ,cmd_lcd_table   ,cmd_lcd   ,0,1 },
  79                 { "ls"    ,N_("Directory[1] listing.")                                      ,cmd_ls_table    ,cmd_ls    ,0,1 },
  80                 { "get"   ,N_("Copy guest-os file[1] to host-os (opt. file[2]).")           ,cmd_get_table   ,cmd_get   ,1,2 },
  81                 { "put"   ,N_("Copy host-os file[1] to guest-os (opt. file[2]).")           ,cmd_put_table   ,cmd_put   ,1,2 },
  82                 { "info"  ,N_("Query information about guest-os item[1].")                  ,cmd_info_table  ,cmd_info  ,1,1 },
  83                 { "volume",N_("Query information about guest-os volume.")                   ,cmd_volume_table,cmd_volume,0,0 },
  84                 { "rm"    ,N_("Remove guest-os file[1].")                                   ,cmd_rm_table    ,cmd_rm    ,1,1 },
  85                 { "mv"    ,N_("Move (rename) guest-os item[1] to guest-os item[2].")        ,cmd_mv_table    ,cmd_mv    ,2,2 },
  86                 { "mkdir" ,N_("Create guest-os directory[1].")                              ,cmd_mkdir_table ,cmd_mkdir ,1,1 },
  87                 { "rmdir" ,N_("Remove guest-os directory[1].")                              ,cmd_rmdir_table ,cmd_rmdir ,1,1 },
  88                 { "commit",N_("Write any pending changes and remount the volume.")          ,cmd_commit_table,cmd_commit,0,0 },
  89                 { "open"  ,N_("Open as[1] file[2] in mode; see 'open --help'")              ,cmd_open_table  ,cmd_open  ,2,2 },
  90                 { "create",N_("Create as[1] file[2] in mode with perm; see 'create --help'"),cmd_create_table,cmd_create,2,2 },
  91                 { "close" ,N_("Close handle[1]")                                            ,cmd_close_table ,cmd_close ,1,1 },
  92                 { "quit"  ,N_("Quit this program.")                                         ,cmd_quit_table  ,cmd_quit  ,0,0 },
  93                 { "help"  ,N_("Show this list of commands or help for command[1].")         ,cmd_help_table  ,cmd_help  ,0,1 },
  94                 { NULL },       /* G_N_ELEMENTS() not usable as sizeof() is not visible for 'extern' */
  95                 };
  96
  97
  98 static gboolean displayArgs_hit;
  99
 100 static void displayArgs(poptContext con,enum poptCallbackReason foo,struct poptOption *key,const char *arg,void *data)
 101 {
 102         displayArgs_hit=TRUE;
 103
 104         if (key->shortName=='?')
 105                 poptPrintHelp(con,stdout,0);
 106         else
 107                 poptPrintUsage(con,stdout,0);
 108 }
 109
 110 const struct poptOption cmdline_poptHelpOptions[]={
 111                 { argInfo:POPT_ARG_INTL_DOMAIN,arg:"popt" },
 112                 { NULL   ,'\0',POPT_ARG_CALLBACK,(void *)&displayArgs,'\0',NULL,NULL },
 113                 { "help" ,'?' ,0                ,NULL,'?',/* N_ */("Show this help message"),     NULL },
 114                 { "usage",'\0',0                ,NULL,'u',/* N_ */("Display brief usage message"),NULL },
 115                 POPT_TABLEEND
 116                 };
 117
 118
 119 static void invoke_cmd_err(int cmd_argc,const char **cmd_argv,GError **errp)
 120 {
 121 const struct cmdline_command *commandp;
 122 const char *cmd_name=NULL;
 123 poptContext cmd_context;
 124 int errint;
 125 const char **cmdarg_argv;
 126 int cmdarg_argc;
 127 const char **csp;
 128 const char *emptyargv_NULL=NULL;
 129
 130         g_return_if_fail(cmd_argc>=0);
 131         g_return_if_fail(!errp || !*errp);
 132
 133         /* poptGetContext() cannot be passed argc==0 even if we lass POPT_CONTEXT_KEEP_FIRST
 134          * as it is buggy. Workaround it by keeping the command name as argv[0].
 135          */
 136         if (!cmd_argc) {
 137 const char *stub_shell[]={ cmdline_command_table[0].name,NULL };
 138
 139                 cmd_argc=1;
 140                 cmd_argv=stub_shell;
 141                 }
 142
 143         cmd_name=*cmd_argv;
 144         for (commandp=cmdline_command_table;commandp->name;commandp++) {
 145                 if (!cmd_name   /* NULL cmd_name fallback to the first table entry - "shell" */
 146                                 || !strcasecmp(cmd_name,commandp->name))
 147                         break;
 148                 }
 149         if (!commandp->name) {
 150                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_UNKNOWN_COMMAND,
 151                                 _("Unknown command, try 'help': %s"),cmd_name);
 152                 return;
 153                 }
 154         displayArgs_hit=FALSE;
 155         cmd_context=poptGetContext(
 156                         PACKAGE,        /* name */
 157                         cmd_argc,cmd_argv,      /* argc,argv */
 158                         commandp->table,        /* options */
 159                         POPT_CONTEXT_POSIXMEHARDER);    /* flags; !POPT_CONTEXT_KEEP_FIRST */
 160         if (cmd_context==NULL) {
 161                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_INVALID_COMMAND_ARGUMENTS,
 162                                 _("Invalid arguments for command: %s"),cmd_name);
 163                 return;
 164                 }
 165         errint=poptReadDefaultConfig(cmd_context,
 166                         TRUE);  /* useEnv */
 167         if (errint!=0) {
 168                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_READING_COMMAND_CONFIG,
 169                                 _("Error '%s' reading default configuration for command: %s"),poptStrerror(errint),cmd_name);
 170                 goto err_free_context;
 171                 }
 172         errint=poptGetNextOpt(cmd_context);
 173         if (errint!=-1) {
 174                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_EXCEEDING_COMMAND_OPTION,
 175                                 _("Exceeding command option for command: %s"),cmd_name);
 176                 goto err_free_context;
 177                 }
 178         if (!(cmdarg_argv=poptGetArgs(cmd_context)))
 179                 cmdarg_argv=&emptyargv_NULL;
 180
 181         if (displayArgs_hit)
 182                 goto err_free_context;
 183
 184         for (csp=cmdarg_argv,cmdarg_argc=0;*csp;csp++)
 185                 cmdarg_argc++;
 186         if (cmdarg_argc<commandp->argsn_min || cmdarg_argc>commandp->argsn_max) {
 187                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_INVALID_COMMAND_ARGUMENT_COUNT,
 188                                 _("Invalid number of command '%s' arguments: %d; expected from %d to %d incl."),
 189                                 cmd_name,cmdarg_argc,commandp->argsn_min,commandp->argsn_max);
 190                 goto err_free_context;
 191                 }
 192
 193         (*commandp->func)(cmdarg_argv,errp);
 194
 195 err_free_context:
 196         poptFreeContext(cmd_context);
 197 }
 198
 199
 200 void err_cleanup(GError **errp)
 201 {
 202         g_return_if_fail(errp!=NULL);
 203
 204         if (!*errp)
 205                 return;
 206         printf("\nERROR: %s\n",(*errp)->message);
 207         g_clear_error(errp);
 208 }
 209
 210
 211 void invoke_cmd(int cmd_argc,const char **cmd_argv)
 212 {
 213 GError *gerr=NULL;
 214
 215         invoke_cmd_err(cmd_argc,cmd_argv,&gerr);
 216         err_cleanup(&gerr);
 217 }
 218
 219
 220 /* Returns: Success (no error occured). */
 221 gboolean errvfsresult_to_gerr(GError **errp,GnomeVFSResult errvfsresult)
 222 {
 223         g_return_val_if_fail(!errp || !*errp,FALSE);
 224
 225         if (errvfsresult==GNOME_VFS_OK)
 226                 return TRUE;
 227
 228         g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_GENERIC_ERROR,
 229                         _("Generic error: %s"),gnome_vfs_result_to_string(errvfsresult));
 230         return FALSE;
 231 }
 232
 233 static GIOChannel *main_giochannel;
 234
 235 void main_exit(void) G_GNUC_NORETURN;
 236 void main_exit(void)
 237 {
 238         if (cmdline_captive_vfs_object) {
 239                 g_object_unref(cmdline_captive_vfs_object);
 240                 cmdline_captive_vfs_object=NULL;
 241                 }
 242         if (main_giochannel) {
 243                 g_io_channel_unref(main_giochannel);
 244                 main_giochannel=NULL;
 245                 }
 246         exit(EXIT_SUCCESS);
 247 }
 248
 249 int main(int argc,char **argv)
 250 {
 251 poptContext context;
 252 int errint;
 253 const char **cmd_argv,**csp;
 254 int cmd_argc;
 255 GError *gerr=NULL;
 256 struct captive_options options;
 257
 258         /* Do not set g_log_set_always_fatal() here as we would not be able
 259          * to restart failed children due to communication-failure alarms.
 260          */
 261
 262         /* Prevent output block buffering if redirecting stdout to file. */
 263         setvbuf(stdout,(char *)NULL,_IONBF,0);
 264         setvbuf(stderr,(char *)NULL,_IONBF,0);
 265
 266         /* Initialize the i18n stuff */
 267         setlocale(LC_ALL,"");
 268         bindtextdomain(PACKAGE,LOCALEDIR);
 269         textdomain(PACKAGE);
 270
 271         /* Initialize GObject subsystem of GLib. */
 272         g_type_init();
 273
 274         captive_options_init(&options);
 275         captive_options=&options;       /* for parsing by 'CAPTIVE_POPT_INCLUDE' */
 276
 277         context=poptGetContext(
 278                         PACKAGE,        /* name */
 279                         argc,(/*en-const*/const char **)argv,   /* argc,argv */
 280                         popt_table,     /* options */
 281                         POPT_CONTEXT_POSIXMEHARDER);    /* flags; && !POPT_CONTEXT_KEEP_FIRST */
 282         if (context==NULL) {
 283                 g_error(_("Error parsing command-line arguments"));
 284                 return EXIT_FAILURE;
 285                 }
 286         errint=poptReadDefaultConfig(context,
 287                         TRUE);  /* useEnv */
 288         if (errint!=0)
 289                 g_warning(_("Error reading default popt configuration"));
 290         errint=poptGetNextOpt(context);
 291         if (errint!=-1) {
 292                 g_error(_("Error parsing (dash-prefixed) command-line argument"));
 293                 return EXIT_FAILURE;
 294                 }
 295         cmd_argv=poptGetArgs(context);
 296         for (csp=cmd_argv,cmd_argc=0;csp && *csp;csp++)
 297                 cmd_argc++;
 298
 299         captive_options=NULL;   /* already parsed by 'CAPTIVE_POPT_INCLUDE' */
 300
 301         /* image_iochannel */
 302         if (cmd_argc<=0) {
 303                 g_error(_("File/device disk image pathname command-line argument required"));
 304                 return EXIT_FAILURE;
 305                 }
 306         g_assert(options.image_iochannel==NULL);
 307         if (!(options.image_iochannel=g_io_channel_new_file(
 308                         cmd_argv[0],    /* filename */
 309                         (options.rwmode==CAPTIVE_OPTION_RWMODE_RW ? "r+" : "r"),        /* mode */
 310                         NULL))) {       /* error */
 311                 g_error(_("image_iochannel open failed"));
 312                 return EXIT_FAILURE;
 313                 }
 314         cmd_argc--;
 315         cmd_argv++;
 316
 317         if (options.filesystem.type==CAPTIVE_OPTIONS_MODULE_TYPE_EMPTY) {
 318                 g_error(_("'--filesystem' option required ('ntfs.sys' pathname suggested)"));
 319                 return EXIT_FAILURE;
 320                 }
 321         if (!options.load_module) {
 322                 g_warning(_("'--load-module' option required ('ntoskrnl.exe' pathname suggested)"));
 323                 return EXIT_FAILURE;
 324                 }
 325
 326         if (GNOME_VFS_OK!=captive_vfs_new(&cmdline_captive_vfs_object,&options)) {
 327                 g_error(_("captive_vfs_new() failed"));
 328                 return EXIT_FAILURE;
 329                 }
 330         captive_options_free(&options);
 331
 332         cmd_cd_internal("/",&gerr);
 333         if (gerr) {
 334                 err_cleanup(&gerr);
 335                 return EXIT_FAILURE;
 336                 }
 337
 338         invoke_cmd(cmd_argc,cmd_argv);
 339
 340         /* 'cmd_argv' gets cleared by 'poptFreeContext(context);' below */
 341         poptFreeContext(context);
 342
 343         main_exit();    /* unref 'cmdline_captive_vfs_object' */
 344         /* NOTREACHED */
 345 }