mediafire-fuse/mfshell/mfshell.c

/*
 * Copyright (C) 2013 Bryan Christ <bryan.christ@mediafire.com>
 *               2014 Johannes Schauer <j.schauer@email.de>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2, as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */


#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include <wordexp.h>

#include <sys/ioctl.h>

#include "mfshell.h"
#include "../utils/stringv.h"


#include <curl/curl.h>

#include "mfshell.h"
#include "commands.h"

struct cmd_t commands[] = {
    {"help",   "",              "show this help", mfshell_cmd_help},
    {"debug",  "",              "show debug information", mfshell_cmd_debug},
    {"host",   "<server>",      "change target server", mfshell_cmd_host},
    {"auth",   "<user <pass>>", "authenticate with active server",
        mfshell_cmd_auth},
    {"whoami", "",              "show basic user info", mfshell_cmd_whoami},
    {"ls",     "",              "show contents of active folder",
        mfshell_cmd_list},
    {"cd",     "[folderkey]",   "change active folder", mfshell_cmd_chdir},
    {"pwd",    "",              "show the active folder", mfshell_cmd_pwd},
    {"lpwd",   "",              "show the local working directory",
        mfshell_cmd_lpwd},
    {"lcd",    "[dir]",         "change the local working directory",
        mfshell_cmd_lcd},
    {"mkdir",  "[folder name]", "create a new folder", mfshell_cmd_mkdir},
    {"file",   "[quickkey]",    "show file information", mfshell_cmd_file},
    {"links",  "[quickkey]",    "show access urls for the file",
        mfshell_cmd_links},
    {"get",    "[quickkey]",    "download a file", mfshell_cmd_get},
    {NULL,     NULL,            NULL,              NULL}
};

mfshell_t*
mfshell_create(int app_id,char *app_key,char *server)
{
    mfshell_t   *mfshell;

    if(app_id <= 0) return NULL;
    if(app_key == NULL) return NULL;
    if(server == NULL) return NULL;

    /*
        check to see if the server contains a forward-slash.  if so,
        the caller did not understand the API and passed in the wrong
        type of server resource.
    */
    if(strchr(server,'/') != NULL) return NULL;

    mfshell = (mfshell_t*)calloc(1,sizeof(mfshell_t));

    mfshell->app_id = app_id;
    mfshell->app_key = strdup(app_key);
    mfshell->server = strdup(server);

    // object to track folder location
    mfshell->folder_curr = folder_alloc();
    folder_set_key(mfshell->folder_curr,"myfiles");

    // shell commands
    mfshell->commands = commands;

    return mfshell;
}

int
mfshell_exec(mfshell_t *mfshell, int argc, char **argv)
{
    cmd_t* curr_cmd;
    for (curr_cmd = mfshell->commands; curr_cmd->name != NULL; curr_cmd++) {
        if (strcmp(argv[0], curr_cmd->name) == 0) {
            return curr_cmd->handler(mfshell, argc, argv);
        }
    }
    return -1;
}

int
mfshell_exec_shell_command(mfshell_t *mfshell,char *command)
{
    wordexp_t       p;
    int             retval;

    if(mfshell == NULL) return -1;
    if(command == NULL) return -1;

    // FIXME: handle non-zero return value of wordexp
    retval = wordexp(command, &p, WRDE_SHOWERR | WRDE_UNDEF);
    if (retval != 0) {
        switch (retval) {
            case WRDE_BADCHAR: fprintf(stderr, "wordexp: WRDE_BADCHAR\n"); break;
            case WRDE_BADVAL: fprintf(stderr, "wordexp: WRDE_BADVAL\n"); break;
            case WRDE_CMDSUB: fprintf(stderr, "wordexp: WRDE_CMDSUB\n"); break;
            case WRDE_NOSPACE: fprintf(stderr, "wordexp: WRDE_NOSPACE\n"); break;
            case WRDE_SYNTAX: fprintf(stderr, "wordexp: WRDE_SYNTAX\n"); break;
        }
    }

    if (p.we_wordc < 1)
        return 0;

    if (p.we_wordv[0] == NULL)
        return 0;

    // TODO: handle retval
    retval = mfshell_exec(mfshell, p.we_wordc, p.we_wordv);

    wordfree(&p);

    return 0;
}