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tools/obexctl: Add initial code
authorLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Mon, 12 Aug 2013 13:30:46 +0000 (16:30 +0300)
committerLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Tue, 15 Oct 2013 13:50:20 +0000 (16:50 +0300)
This add initial code for things like input handling as well as some
basic commands.

tools/obexctl.c

index 0006799..ab2e9ac 100644 (file)
 #include <config.h>
 #endif
 
+#include <stdio.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/signalfd.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+#include <glib.h>
+#include <gdbus.h>
+
+#include <client/display.h>
+
+/* String display constants */
+#define COLORED_NEW    COLOR_GREEN "NEW" COLOR_OFF
+#define COLORED_CHG    COLOR_YELLOW "CHG" COLOR_OFF
+#define COLORED_DEL    COLOR_RED "DEL" COLOR_OFF
+
+#define PROMPT_ON      COLOR_BLUE "[obex]" COLOR_OFF "# "
+#define PROMPT_OFF     "[obex]# "
+
+static GMainLoop *main_loop;
+static DBusConnection *dbus_conn;
+
+static void connect_handler(DBusConnection *connection, void *user_data)
+{
+       rl_set_prompt(PROMPT_ON);
+       printf("\r");
+       rl_on_new_line();
+       rl_redisplay();
+}
+
+static void disconnect_handler(DBusConnection *connection, void *user_data)
+{
+       rl_set_prompt(PROMPT_OFF);
+       printf("\r");
+       rl_on_new_line();
+       rl_redisplay();
+}
+
+static void cmd_quit(int argc, char *argv[])
+{
+       g_main_loop_quit(main_loop);
+}
+
+static const struct {
+       const char *cmd;
+       const char *arg;
+       void (*func) (int argc, char *argv[]);
+       const char *desc;
+} cmd_table[] = {
+       { "quit",         NULL,       cmd_quit, "Quit program" },
+       { "exit",         NULL,       cmd_quit },
+       { "help" },
+       {}
+};
+
+static char *cmd_generator(const char *text, int state)
+{
+       static int index, len;
+       const char *cmd;
+
+       if (!state) {
+               index = 0;
+               len = strlen(text);
+       }
+
+       while ((cmd = cmd_table[index].cmd)) {
+               index++;
+
+               if (!strncmp(cmd, text, len))
+                       return strdup(cmd);
+       }
+
+       return NULL;
+}
+
+static char **cmd_completion(const char *text, int start, int end)
+{
+       char **matches = NULL;
+
+       if (start == 0) {
+               rl_completion_display_matches_hook = NULL;
+               matches = rl_completion_matches(text, cmd_generator);
+       }
+
+       if (!matches)
+               rl_attempted_completion_over = 1;
+
+       return matches;
+}
+
+static void rl_handler(char *input)
+{
+       int argc;
+       char **argv = NULL;
+       int i;
+
+       if (!input) {
+               rl_insert_text("quit");
+               rl_redisplay();
+               rl_crlf();
+               g_main_loop_quit(main_loop);
+               return;
+       }
+
+       if (!strlen(input))
+               goto done;
+
+       add_history(input);
+
+       argv = g_strsplit(input, " ", -1);
+       if (argv == NULL)
+               goto done;
+
+       for (argc = 0; argv[argc];)
+               argc++;
+
+       if (argc == 0)
+               goto done;
+
+       for (i = 0; cmd_table[i].cmd; i++) {
+               if (strcmp(argv[0], cmd_table[i].cmd))
+                       continue;
+
+               if (cmd_table[i].func) {
+                       cmd_table[i].func(argc, argv);
+                       goto done;
+               }
+       }
+
+       if (strcmp(argv[0], "help")) {
+               printf("Invalid command\n");
+               goto done;
+       }
+
+       printf("Available commands:\n");
+
+       for (i = 0; cmd_table[i].cmd; i++) {
+               if (cmd_table[i].desc)
+                       printf("  %s %-*s %s\n", cmd_table[i].cmd,
+                                       (int)(25 - strlen(cmd_table[i].cmd)),
+                                       cmd_table[i].arg ? : "",
+                                       cmd_table[i].desc ? : "");
+       }
+
+done:
+       g_strfreev(argv);
+       free(input);
+}
+
+static gboolean option_version = FALSE;
+
+static GOptionEntry options[] = {
+       { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
+                               "Show version information and exit" },
+       { NULL },
+};
+
+static gboolean signal_handler(GIOChannel *channel, GIOCondition condition,
+                                                       gpointer user_data)
+{
+       static unsigned int __terminated = 0;
+       struct signalfd_siginfo si;
+       ssize_t result;
+       int fd;
+
+       if (condition & (G_IO_NVAL | G_IO_ERR | G_IO_HUP)) {
+               g_main_loop_quit(main_loop);
+               return FALSE;
+       }
+
+       fd = g_io_channel_unix_get_fd(channel);
+
+       result = read(fd, &si, sizeof(si));
+       if (result != sizeof(si))
+               return FALSE;
+
+       switch (si.ssi_signo) {
+       case SIGINT:
+               rl_replace_line("", 0);
+               rl_crlf();
+               rl_on_new_line();
+               rl_redisplay();
+               break;
+       case SIGTERM:
+               if (__terminated == 0) {
+                       rl_replace_line("", 0);
+                       rl_crlf();
+                       g_main_loop_quit(main_loop);
+               }
+
+               __terminated = 1;
+               break;
+       }
+
+       return TRUE;
+}
+
+static guint setup_signalfd(void)
+{
+       GIOChannel *channel;
+       guint source;
+       sigset_t mask;
+       int fd;
+
+       sigemptyset(&mask);
+       sigaddset(&mask, SIGINT);
+       sigaddset(&mask, SIGTERM);
+
+       if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
+               perror("Failed to set signal mask");
+               return 0;
+       }
+
+       fd = signalfd(-1, &mask, 0);
+       if (fd < 0) {
+               perror("Failed to create signal descriptor");
+               return 0;
+       }
+
+       channel = g_io_channel_unix_new(fd);
+
+       g_io_channel_set_close_on_unref(channel, TRUE);
+       g_io_channel_set_encoding(channel, NULL, NULL);
+       g_io_channel_set_buffered(channel, FALSE);
+
+       source = g_io_add_watch(channel,
+                               G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
+                               signal_handler, NULL);
+
+       g_io_channel_unref(channel);
+
+       return source;
+}
+
+static gboolean input_handler(GIOChannel *channel, GIOCondition condition,
+                                                       gpointer user_data)
+{
+       if (condition & (G_IO_HUP | G_IO_ERR | G_IO_NVAL)) {
+               g_main_loop_quit(main_loop);
+               return FALSE;
+       }
+
+       rl_callback_read_char();
+       return TRUE;
+}
+
+static guint setup_standard_input(void)
+{
+       GIOChannel *channel;
+       guint source;
+
+       channel = g_io_channel_unix_new(fileno(stdin));
+
+       source = g_io_add_watch(channel,
+                               G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
+                               input_handler, NULL);
+
+       g_io_channel_unref(channel);
+
+       return source;
+}
+
 int main(int argc, char *argv[])
 {
+       GOptionContext *context;
+       GError *error = NULL;
+       GDBusClient *client;
+       guint signal, input;
+
+       context = g_option_context_new(NULL);
+       g_option_context_add_main_entries(context, options, NULL);
+
+       if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
+               if (error != NULL) {
+                       g_printerr("%s\n", error->message);
+                       g_error_free(error);
+               } else
+                       g_printerr("An unknown error occurred\n");
+               exit(1);
+       }
+
+       g_option_context_free(context);
+
+       if (option_version == TRUE) {
+               printf("%s\n", VERSION);
+               exit(0);
+       }
+
+       main_loop = g_main_loop_new(NULL, FALSE);
+       dbus_conn = g_dbus_setup_bus(DBUS_BUS_SESSION, NULL, NULL);
+
+       rl_attempted_completion_function = cmd_completion;
+
+       rl_erase_empty_line = 1;
+       rl_callback_handler_install(NULL, rl_handler);
+
+       rl_set_prompt(PROMPT_OFF);
+       rl_redisplay();
+
+       input = setup_standard_input();
+       signal = setup_signalfd();
+       client = g_dbus_client_new(dbus_conn, "org.bluez.obex",
+                                                       "/org/bluez/obex");
+
+       g_dbus_client_set_connect_watch(client, connect_handler, NULL);
+       g_dbus_client_set_disconnect_watch(client, disconnect_handler, NULL);
+
+       g_main_loop_run(main_loop);
+
+       g_dbus_client_unref(client);
+       g_source_remove(signal);
+       g_source_remove(input);
+
+       rl_message("");
+       rl_callback_handler_remove();
+
+       dbus_connection_unref(dbus_conn);
+       g_main_loop_unref(main_loop);
+
        return 0;
 }