appimaged.c

   1 /**************************************************************************
   2  *
   3  * Copyright (c) 2004-17 Simon Peter
   4  *
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #ident "AppImage by Simon Peter, http://appimage.org/"
  28
  29 /*
  30  * Optional daempon to watch directories for AppImages
  31  * and register/unregister them with the system
  32  *
  33  * TODO (feel free to send pull requests):
  34  * - Switch to https://developer.gnome.org/gio/stable/GFileMonitor.html (but with subdirectories)
  35  *   which would drop the dependency on libinotifytools.so.0
  36  * - Add and remove subdirectories on the fly at runtime -
  37  *   see https://github.com/paragone/configure-via-inotify/blob/master/inotify/src/inotifywatch.c
  38  */
  39
  40 #include <stdio.h>
  41 #include <errno.h>
  42 #include <string.h>
  43 #include <stdlib.h>
  44 #include <unistd.h>
  45 #include <sys/types.h>
  46 #include <dirent.h>
  47
  48 #include <inotifytools/inotifytools.h>
  49 #include <inotifytools/inotify.h>
  50
  51 #include <glib.h>
  52 #include <glib/gprintf.h>
  53
  54 #include "shared.c"
  55
  56 #include <pthread.h>
  57
  58 extern int notify(char *title, char *body, int timeout);
  59
  60 static gboolean verbose = FALSE;
  61 static gboolean version = FALSE;
  62 static gboolean install = FALSE;
  63 static gboolean uninstall = FALSE;
  64 gchar **remaining_args = NULL;
  65
  66 static GOptionEntry entries[] =
  67 {
  68     { "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, "Be verbose", NULL },
  69     { "install", 'i', 0, G_OPTION_ARG_NONE, &install, "Install this appimaged instance to $HOME", NULL },
  70     { "uninstall", 'u', 0, G_OPTION_ARG_NONE, &uninstall, "Uninstall an appimaged instance from $HOME", NULL },
  71     { "version", 0, 0, G_OPTION_ARG_NONE, &version, "Show version number", NULL },
  72     { G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &remaining_args, NULL },
  73     { NULL }
  74 };
  75
  76 #define EXCLUDE_CHUNK 1024
  77 #define WR_EVENTS (IN_CLOSE_WRITE | IN_MOVED_FROM | IN_MOVED_TO | IN_DELETE | IN_DELETE_SELF | IN_MOVE_SELF)
  78
  79 /* Run the actual work in treads;
  80  * pthread allows to pass only one argument to the thread function,
  81  * hence we use a struct as the argument in which the real arguments are */
  82 struct arg_struct {
  83     char* path;
  84     gboolean verbose;
  85 };
  86
  87 void *thread_appimage_register_in_system(void *arguments)
  88 {
  89     struct arg_struct *args = arguments;
  90     appimage_register_in_system(args->path, args->verbose);
  91     pthread_exit(NULL);
  92 }
  93
  94 void *thread_appimage_unregister_in_system(void *arguments)
  95 {
  96     struct arg_struct *args = arguments;
  97     appimage_unregister_in_system(args->path, args->verbose);
  98     pthread_exit(NULL);
  99 }
 100
 101 /* Recursively process the files in this directory and its subdirectories,
 102  * http://stackoverflow.com/questions/8436841/how-to-recursively-list-directories-in-c-on-linux
 103  */
 104 void initially_register(const char *name, int level)
 105 {
 106     DIR *dir;
 107     struct dirent *entry;
 108
 109     if (!(dir = opendir(name))) {
 110         if (verbose) {
 111             if (errno == EACCES) {
 112                 g_print("_________________________\n");
 113                 g_print("Permission denied on dir '%s'\n", name);
 114             }
 115             else {
 116                 g_print("_________________________\n");
 117                 g_print("Failed to open dir '%s'\n", name);
 118             }
 119         }
 120         closedir(dir);
 121         return;
 122     }
 123
 124     if (!(entry = readdir(dir))) {
 125         if (verbose) {
 126             g_print("_________________________\n");
 127             g_print("Invalid directory stream descriptor '%s'\n", name);
 128         }
 129         closedir(dir);
 130         return;
 131     }
 132
 133     do {
 134         if (entry->d_type == DT_DIR) {
 135             char path[1024];
 136             int len = snprintf(path, sizeof(path)-1, "%s/%s", name, entry->d_name);
 137             path[len] = 0;
 138             if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
 139                 continue;
 140             initially_register(path, level + 1);
 141         }
 142         else {
 143             int ret;
 144             gchar *absolute_path = g_build_path(G_DIR_SEPARATOR_S, name, entry->d_name, NULL);
 145             if(g_file_test(absolute_path, G_FILE_TEST_IS_REGULAR)){
 146                 pthread_t some_thread;
 147                 struct arg_struct args;
 148                 args.path = absolute_path;
 149                 args.verbose = verbose;
 150                 ret = pthread_create(&some_thread, NULL, thread_appimage_register_in_system, &args);
 151                 if (!ret) {
 152                     pthread_join(some_thread, NULL);
 153                 }
 154             }
 155         }
 156     } while ((entry = readdir(dir)) != NULL);
 157     closedir(dir);
 158 }
 159
 160 void add_dir_to_watch(char *directory)
 161 {
 162     if (g_file_test (directory, G_FILE_TEST_IS_DIR)){
 163         if(!inotifytools_watch_recursively(directory, WR_EVENTS) ) {
 164             fprintf(stderr, "%s\n", strerror(inotifytools_error()));
 165             exit(1);
 166
 167         }
 168         initially_register(directory, 0);
 169     }
 170 }
 171
 172 void handle_event(struct inotify_event *event)
 173 {
 174     int ret;
 175     gchar *absolute_path = g_build_path(G_DIR_SEPARATOR_S, inotifytools_filename_from_wd(event->wd), event->name, NULL);
 176
 177     if((event->mask & IN_CLOSE_WRITE) | (event->mask & IN_MOVED_TO)){
 178         if(g_file_test(absolute_path, G_FILE_TEST_IS_REGULAR)){
 179             pthread_t some_thread;
 180             struct arg_struct args;
 181             args.path = absolute_path;
 182             args.verbose = verbose;
 183             g_print("_________________________\n");
 184             ret = pthread_create(&some_thread, NULL, thread_appimage_register_in_system, &args);
 185             if (!ret) {
 186                 pthread_join(some_thread, NULL);
 187             }
 188         }
 189     }
 190
 191     if((event->mask & IN_MOVED_FROM) | (event->mask & IN_DELETE)){
 192         pthread_t some_thread;
 193         struct arg_struct args;
 194         args.path = absolute_path;
 195         args.verbose = verbose;
 196         g_print("_________________________\n");
 197         ret = pthread_create(&some_thread, NULL, thread_appimage_unregister_in_system, &args);
 198         if (!ret) {
 199             pthread_join(some_thread, NULL);
 200         }
 201     }
 202
 203     /* Too many FS events were received, some event notifications were potentially lost */
 204     if (event->mask & IN_Q_OVERFLOW){
 205         printf ("Warning: AN OVERFLOW EVENT OCCURRED\n");
 206     }
 207
 208     if(event->mask & IN_IGNORED){
 209         printf ("Warning: AN IN_IGNORED EVENT OCCURRED\n");
 210     }
 211
 212 }
 213
 214 int main(int argc, char ** argv) {
 215
 216     GError *error = NULL;
 217     GOptionContext *context;
 218
 219     context = g_option_context_new ("");
 220     g_option_context_add_main_entries (context, entries, NULL);
 221     // g_option_context_add_group (context, gtk_get_option_group (TRUE));
 222     if (!g_option_context_parse (context, &argc, &argv, &error))
 223     {
 224         g_print("option parsing failed: %s\n", error->message);
 225         exit (1);
 226     }
 227
 228     if(version){
 229         fprintf(stderr,"Version: %s\n", VERSION_NUMBER);
 230         exit(0);
 231     }
 232
 233     if ( !inotifytools_initialize()){
 234         fprintf(stderr, "inotifytools_initialize error\n");
 235         exit(1);
 236     }
 237
 238     gchar *user_bin_dir = g_build_filename(g_get_home_dir(), "/.local/bin", NULL);
 239     gchar *installed_appimaged_location = g_build_filename(user_bin_dir, "appimaged", NULL);
 240     const gchar *appimage_location = g_getenv("APPIMAGE");
 241     gchar *own_desktop_file_location = g_build_filename(g_getenv("APPDIR"), "/appimaged.desktop", NULL);
 242     gchar *global_autostart_file = "/etc/xdg/autostart/appimaged.desktop";
 243     gchar *global_systemd_file = "/usr/lib/systemd/user/appimaged.service";
 244     gchar *partial_path = g_strdup_printf("autostart/appimagekit-appimaged.desktop");
 245     gchar *destination = g_build_filename(g_get_user_config_dir(), partial_path, NULL);
 246
 247     if(uninstall){
 248             if(g_file_test (installed_appimaged_location, G_FILE_TEST_EXISTS))
 249                 fprintf(stderr, "* Please delete %s\n", installed_appimaged_location);
 250             if(g_file_test (destination, G_FILE_TEST_EXISTS))
 251                 fprintf(stderr, "* Please delete %s\n", destination);
 252             fprintf(stderr, "* To remove all AppImage desktop integration, run\n");
 253             fprintf(stderr, "  find ~/.local/share -name 'appimagekit_*' -exec rm {} \\;\n\n");
 254         exit(0);
 255     }
 256
 257     if(install){
 258         if(((appimage_location != NULL)) && ((own_desktop_file_location != NULL))){
 259             printf("Running from within %s\n", appimage_location);
 260             if ( (! g_file_test ("/usr/bin/appimaged", G_FILE_TEST_EXISTS)) && (! g_file_test (global_autostart_file, G_FILE_TEST_EXISTS)) && (! g_file_test (global_systemd_file, G_FILE_TEST_EXISTS))){
 261                 printf ("%s is not installed, moving it to %s\n", argv[0], installed_appimaged_location);
 262                 g_mkdir_with_parents(user_bin_dir, 0755);
 263                 gchar *command = g_strdup_printf("mv \"%s\" \"%s\"", appimage_location, installed_appimaged_location);
 264                 system(command);
 265                 /* When appimaged installs itself, then to the $XDG_CONFIG_HOME/autostart/ directory, falling back to ~/.config/autostart/ */
 266                 fprintf(stderr, "Installing to autostart: %s\n", own_desktop_file_location);
 267                 g_mkdir_with_parents(g_path_get_dirname(destination), 0755);
 268                 gchar *command2 = g_strdup_printf("cp \"%s\" \"%s\"", own_desktop_file_location, destination);
 269                 system(command2);
 270                 if(g_file_test (installed_appimaged_location, G_FILE_TEST_EXISTS))
 271                     fprintf(stderr, "* Installed %s\n", installed_appimaged_location);
 272                 if(g_file_test (destination, G_FILE_TEST_EXISTS)){
 273                     gchar *command3 = g_strdup_printf("sed -i -e 's|^Exec=.*|Exec=%s|g' '%s'", installed_appimaged_location, destination);
 274                     if(verbose)
 275                         fprintf(stderr, "%s\n", command3);
 276                     system(command3);
 277                     fprintf(stderr, "* Installed %s\n", destination);
 278                 }
 279                 if(g_file_test (installed_appimaged_location, G_FILE_TEST_EXISTS))
 280                     fprintf(stderr, "\nTo uninstall, run %s --uninstall and follow the instructions\n\n", installed_appimaged_location);
 281                 char *title;
 282                 char *body;
 283                 title = g_strdup_printf("Please log out");
 284                 body = g_strdup_printf("and log in again to complete the installation");
 285                 notify(title, body, 15);
 286                 exit(0);
 287             }
 288         } else {
 289             printf("Not running from within an AppImage. This binary cannot be installed in this way.\n");
 290             exit(1);
 291         }
 292     }
 293
 294     /* When we run from inside an AppImage, then we check if we are installed
 295      * in a per-user location and if not, we install ourselves there */
 296     if(((appimage_location != NULL)) && ((own_desktop_file_location != NULL))){
 297         if ( (! g_file_test ("/usr/bin/appimaged", G_FILE_TEST_EXISTS)) && ((! g_file_test (global_autostart_file, G_FILE_TEST_EXISTS)) || (! g_file_test (destination, G_FILE_TEST_EXISTS))) && (! g_file_test (global_systemd_file, G_FILE_TEST_EXISTS)) && (! g_file_test (installed_appimaged_location, G_FILE_TEST_EXISTS)) && (g_file_test (own_desktop_file_location, G_FILE_TEST_IS_REGULAR))){
 298             char *title;
 299             char *body;
 300             title = g_strdup_printf("Not installed\n");
 301             body = g_strdup_printf("Please run %s --install", argv[0]);
 302             notify(title, body, 15);
 303             exit(1);
 304         }
 305     }
 306
 307     add_dir_to_watch(user_bin_dir);
 308     add_dir_to_watch(g_build_filename(g_get_home_dir(), "/Downloads", NULL));
 309     add_dir_to_watch(g_build_filename(g_get_home_dir(), "/bin", NULL));
 310     add_dir_to_watch(g_build_filename("/Applications", NULL));
 311     add_dir_to_watch(g_build_filename("/isodevice/Applications", NULL)); // Ubuntu Live media
 312     add_dir_to_watch(g_build_filename("/isofrom/Applications", NULL)); // openSUSE Live media
 313     add_dir_to_watch(g_build_filename("/run/archiso/img_dev/Applications", NULL)); // Antergos Live media
 314     add_dir_to_watch(g_build_filename("/opt", NULL));
 315     add_dir_to_watch(g_build_filename("/usr/local/bin", NULL));
 316
 317     struct inotify_event * event = inotifytools_next_event(-1);
 318     while (event) {
 319         if(verbose){
 320             inotifytools_printf(event, "%w%f %e\n");
 321         }
 322         fflush(stdout);
 323         handle_event(event);
 324         fflush(stdout);
 325         event = inotifytools_next_event(-1);
 326     }
 327 }