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_rm.h"
  42 #include "cmd_mv.h"
  43 #include "cmd_mkdir.h"
  44 #include "cmd_rmdir.h"
  45 #include "cmd_quit.h"
  46 #include "cmd_help.h"
  47
  48
  49 CaptiveVfsObject *cmdline_captive_vfs_object;
  50
  51
  52 GQuark cmdline_main_error_quark(void)
  53 {
  54 GQuark r=0;
  55
  56         if (!r)
  57                 r=g_quark_from_static_string("cmdline-main");
  58
  59         return r;
  60 }
  61
  62
  63 static const struct poptOption popt_table[]={
  64                 CAPTIVE_POPT_INCLUDE,
  65                 POPT_AUTOHELP
  66                 POPT_TABLEEND
  67                 };
  68
  69 const struct cmdline_command cmdline_command_table[]={
  70                 /* First entry is the default if no command name was specified. */
  71                 { "shell",N_("Interactive commands shell.")                        ,cmd_shell_table,cmd_shell,0,0 },
  72                 { "cd"   ,N_("Print or change current guest-os directory[1].")     ,cmd_cd_table   ,cmd_cd   ,0,1 },
  73                 { "lcd"  ,N_("Print or change current host-os  directory[1].")     ,cmd_lcd_table  ,cmd_lcd  ,0,1 },
  74                 { "ls"   ,N_("Directory[1] listing.")                              ,cmd_ls_table   ,cmd_ls   ,0,1 },
  75                 { "get"  ,N_("Copy guest-os file[1] to host-os (opt. file[2]).")   ,cmd_get_table  ,cmd_get  ,1,2 },
  76                 { "put"  ,N_("Copy host-os file[1] to guest-os (opt. file[2]).")   ,cmd_put_table  ,cmd_put  ,1,2 },
  77                 { "info" ,N_("Query information about guest-os item[1].")          ,cmd_info_table ,cmd_info ,1,1 },
  78                 { "rm"   ,N_("Remove guest-os file[1].")                           ,cmd_rm_table   ,cmd_rm   ,1,1 },
  79                 { "mv"   ,N_("Move (rename) guest-os item[1] to guest-os item[2]."),cmd_mv_table   ,cmd_mv   ,2,2 },
  80                 { "mkdir",N_("Create guest-os directory[1].")                      ,cmd_mkdir_table,cmd_mkdir,1,1 },
  81                 { "rmdir",N_("Remove guest-os directory[1].")                      ,cmd_rmdir_table,cmd_rmdir,1,1 },
  82                 { "quit" ,N_("Quit this program.")                                 ,cmd_quit_table ,cmd_quit ,0,0 },
  83                 { "help" ,N_("Show this list of commands.")                        ,cmd_help_table ,cmd_help ,0,0 },
  84                 { NULL },       /* G_N_ELEMENTS() not usable as sizeof() is not visible for 'extern' */
  85                 };
  86
  87
  88 static void invoke_cmd_err(int cmd_argc,const char **cmd_argv,GError **errp)
  89 {
  90 const struct cmdline_command *commandp;
  91 const char *cmd_name=NULL;
  92 poptContext cmd_context;
  93 int errint;
  94 const char **cmdarg_argv;
  95 int cmdarg_argc;
  96 const char **csp;
  97 const char *emptyargv_NULL=NULL;
  98
  99         g_return_if_fail(cmd_argc>=0);
 100         g_return_if_fail(!errp || !*errp);
 101
 102         /* poptGetContext() cannot be passed argc==0 even if we lass POPT_CONTEXT_KEEP_FIRST
 103          * as it is buggy. Workaround it by keeping the command name as argv[0].
 104          */
 105         if (!cmd_argc) {
 106 const char *stub_shell[]={ cmdline_command_table[0].name,NULL };
 107
 108                 cmd_argc=1;
 109                 cmd_argv=stub_shell;
 110                 }
 111
 112         cmd_name=*cmd_argv;
 113         for (commandp=cmdline_command_table;commandp->name;commandp++) {
 114                 if (!cmd_name   /* NULL cmd_name fallback to the first table entry - "shell" */
 115                                 || !strcasecmp(cmd_name,commandp->name))
 116                         break;
 117                 }
 118         if (!commandp->name) {
 119                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_UNKNOWN_COMMAND,
 120                                 _("Unknown command, try 'help': %s"),cmd_name);
 121                 return;
 122                 }
 123         cmd_context=poptGetContext(
 124                         PACKAGE,        /* name */
 125                         cmd_argc,cmd_argv,      /* argc,argv */
 126                         commandp->table,        /* options */
 127                         POPT_CONTEXT_POSIXMEHARDER);    /* flags; !POPT_CONTEXT_KEEP_FIRST */
 128         if (cmd_context==NULL) {
 129                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_INVALID_COMMAND_ARGUMENTS,
 130                                 _("Invalid arguments for command: %s"),cmd_name);
 131                 return;
 132                 }
 133         errint=poptReadDefaultConfig(cmd_context,
 134                         TRUE);  /* useEnv */
 135         if (errint!=0) {
 136                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_READING_COMMAND_CONFIG,
 137                                 _("Error '%s' reading default configuration for command: %s"),poptStrerror(errint),cmd_name);
 138                 return;
 139                 }
 140         errint=poptGetNextOpt(cmd_context);
 141         if (errint!=-1) {
 142                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_EXCEEDING_COMMAND_OPTION,
 143                                 _("Exceeding command option for command: %s"),cmd_name);
 144                 return;
 145                 }
 146         if (!(cmdarg_argv=poptGetArgs(cmd_context)))
 147                 cmdarg_argv=&emptyargv_NULL;
 148
 149         for (csp=cmdarg_argv,cmdarg_argc=0;*csp;csp++)
 150                 cmdarg_argc++;
 151         if (cmdarg_argc<commandp->argsn_min || cmdarg_argc>commandp->argsn_max) {
 152                 g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_INVALID_COMMAND_ARGUMENT_COUNT,
 153                                 _("Invalid number of command '%s' arguments: %d; expected from %d to %d incl."),
 154                                 cmd_name,cmdarg_argc,commandp->argsn_min,commandp->argsn_max);
 155                 return;
 156                 }
 157
 158         (*commandp->func)(cmdarg_argv,errp);
 159
 160         poptFreeContext(cmd_context);
 161 }
 162
 163
 164 void err_cleanup(GError **errp)
 165 {
 166         g_return_if_fail(errp!=NULL);
 167
 168         if (!*errp)
 169                 return;
 170         printf("\nERROR: %s\n",(*errp)->message);
 171         g_clear_error(errp);
 172 }
 173
 174
 175 void invoke_cmd(int cmd_argc,const char **cmd_argv)
 176 {
 177 GError *gerr=NULL;
 178
 179         invoke_cmd_err(cmd_argc,cmd_argv,&gerr);
 180         err_cleanup(&gerr);
 181 }
 182
 183
 184 /* Returns: Success (no error occured). */
 185 gboolean errvfsresult_to_gerr(GError **errp,GnomeVFSResult errvfsresult)
 186 {
 187         g_return_val_if_fail(!errp || !*errp,FALSE);
 188
 189         if (errvfsresult==GNOME_VFS_OK)
 190                 return TRUE;
 191
 192         g_set_error(errp,CMDLINE_MAIN_ERROR,CMDLINE_MAIN_ERROR_GENERIC_ERROR,
 193                         _("Generic error: %s"),gnome_vfs_result_to_string(errvfsresult));
 194         return FALSE;
 195 }
 196
 197 int main(int argc,char **argv)
 198 {
 199 poptContext context;
 200 int errint;
 201 const char **cmd_argv,**csp;
 202 int cmd_argc;
 203 GError *gerr=NULL;
 204 const char *cmd_cd_root_args[]={"/",NULL};
 205 struct captive_options options;
 206
 207         /* Initialize the i18n stuff */
 208         setlocale(LC_ALL,"");
 209         bindtextdomain(PACKAGE,LOCALEDIR);
 210         textdomain(PACKAGE);
 211
 212         /* Initialize GObject subsystem of GLib. */
 213         g_type_init();
 214
 215         captive_options_init(&options);
 216         captive_options=&options;       /* for parsing by 'CAPTIVE_POPT_INCLUDE' */
 217
 218         context=poptGetContext(
 219                         PACKAGE,        /* name */
 220                         argc,(/*en-const*/const char **)argv,   /* argc,argv */
 221                         popt_table,     /* options */
 222                         POPT_CONTEXT_POSIXMEHARDER);    /* flags; && !POPT_CONTEXT_KEEP_FIRST */
 223         if (context==NULL) {
 224                 g_assert_not_reached(); /* argument recognization args_error */
 225                 return EXIT_FAILURE;
 226                 }
 227         errint=poptReadDefaultConfig(context,
 228                         TRUE);  /* useEnv */
 229         if (errint!=0) {
 230                 g_assert_not_reached(); /* argument recognization args_error */
 231                 return EXIT_FAILURE;
 232                 }
 233         errint=poptGetNextOpt(context);
 234         if (errint!=-1) {
 235                 g_assert_not_reached(); /* some non-callbacked argument reached */
 236                 return EXIT_FAILURE;
 237                 }
 238         cmd_argv=poptGetArgs(context);
 239         for (csp=cmd_argv,cmd_argc=0;csp && *csp;csp++)
 240                 cmd_argc++;
 241
 242         captive_options=NULL;   /* already parsed by 'CAPTIVE_POPT_INCLUDE' */
 243
 244         /* image_iochannel */
 245         if (cmd_argc) {
 246                 g_assert(options.image_iochannel==NULL);
 247                 if (!(options.image_iochannel=g_io_channel_new_file(
 248                                 cmd_argv[0],    /* filename */
 249                                 (options.rwmode==CAPTIVE_OPTION_RWMODE_RW ? "r+" : "r"),        /* mode */
 250                                 NULL))) {       /* error */
 251                         g_error(_("image_iochannel open failed"));
 252                         return EXIT_FAILURE;
 253                         }
 254                 }
 255         if (cmd_argc>0) {
 256                 /* image file */
 257                 cmd_argc--;
 258                 cmd_argv++;
 259                 }
 260
 261         if (GNOME_VFS_OK!=captive_vfs_new(&cmdline_captive_vfs_object,&options)) {
 262                 g_error(_("captive_vfs_new() failed"));
 263                 return EXIT_FAILURE;
 264                 }
 265         captive_options_free(&options);
 266
 267         cmd_cd(cmd_cd_root_args,&gerr);
 268         if (gerr) {
 269                 err_cleanup(&gerr);
 270                 return EXIT_FAILURE;
 271                 }
 272
 273         invoke_cmd(cmd_argc,cmd_argv);
 274
 275         /* 'cmd_argv' gets cleared by 'poptFreeContext(context);' below */
 276         poptFreeContext(context);
 277
 278         return EXIT_SUCCESS;
 279 }