make toxic handle input in a more sane manner

prompt.c

@@ -16,10 +16,44 @@ uint8_t pending_requests[MAX_STR_SIZE][CLIENT_ID_SIZE]; // XXX
 uint8_t num_requests=0; // XXX
 
 extern void on_friendadded(int friendnumber);
-static void print_usage(ToxWindow *self);
 static char prompt_buf[MAX_STR_SIZE] = {0};
 static int prompt_buf_pos = 0;
 
+/* commands */
+void cmd_accept(ToxWindow *, char **);
+void cmd_add(ToxWindow *, char **);
+void cmd_clear(ToxWindow *, char **);
+void cmd_connect(ToxWindow *, char **);
+void cmd_help(ToxWindow *, char **);
+void cmd_msg(ToxWindow *, char **);
+void cmd_myid(ToxWindow *, char **);
+void cmd_nick(ToxWindow *, char **);
+void cmd_quit(ToxWindow *, char **);
+void cmd_status(ToxWindow *, char **);
+void cmd_statusmsg(ToxWindow *, char **);
+
+#define NUM_COMMANDS 13
+
+static struct {
+  char *name;
+  int numargs;
+  void (*func)(ToxWindow *, char **);
+} commands[] = {
+  { "accept",    1, cmd_accept    },
+  { "add",       2, cmd_add       },
+  { "clear",     0, cmd_clear     },
+  { "connect",   3, cmd_connect   },
+  { "exit",      0, cmd_quit      },
+  { "help",      0, cmd_help      },
+  { "msg",       2, cmd_msg       },
+  { "myid",      0, cmd_myid      },
+  { "nick",      1, cmd_nick      },
+  { "q",         0, cmd_quit      },
+  { "quit",      0, cmd_quit      },
+  { "status",    2, cmd_status    },
+  { "statusmsg", 1, cmd_statusmsg },
+};
+
 // XXX:
 int add_req(uint8_t *public_key)
 {
@@ -40,6 +74,209 @@ unsigned char *hex_string_to_bin(char hex_string[])
   return val;
 }
 
+void cmd_accept(ToxWindow *self, char **args)
+{
+  int num = atoi(args[1]);
+  if (num >= num_requests) {
+    wprintw(self->window, "Invalid syntax.\n");
+    return;
+  }
+
+  num = m_addfriend_norequest(pending_requests[num]);
+  if (num == -1)
+    wprintw(self->window, "Failed to add friend.\n");
+  else {
+    wprintw(self->window, "Friend accepted as: %d.\n", num);
+    on_friendadded(num);
+  }
+}
+
+void cmd_add(ToxWindow *self, char **args)
+{
+  uint8_t id_bin[KEY_SIZE_BYTES];
+  char xx[3];
+  uint32_t x;
+  char *id = args[1];
+  char *msg = args[2];
+
+  if (!id) {
+    wprintw(self->window, "Invalid command: add expected at least one argument.\n");
+    return;
+  }
+  if (!msg)
+    msg = "";
+
+  if (strlen(id) != 2*KEY_SIZE_BYTES) {
+    wprintw(self->window, "Invalid ID length.\n");
+    return;
+  }
+  int i;
+  for (i = 0; i < KEY_SIZE_BYTES; ++i) {
+    xx[0] = id[2*i];
+    xx[1] = id[2*i+1];
+    xx[2] = '\0';
+    if (sscanf(xx, "%02x", &x) != 1) {
+      wprintw(self->window, "Invalid ID.\n");
+      return;
+    }
+    id_bin[i] = x;
+  }
+  int num = m_addfriend(id_bin, (uint8_t*) msg, strlen(msg)+1);
+  switch (num) {
+  case FAERR_TOOLONG:
+    wprintw(self->window, "Message is too long.\n");
+    break;
+  case FAERR_NOMESSAGE:
+    wprintw(self->window, "Please add a message to your request.\n");
+    break;
+  case FAERR_OWNKEY:
+    wprintw(self->window, "That appears to be your own ID.\n");
+    break;
+  case FAERR_ALREADYSENT:
+    wprintw(self->window, "Friend request already sent.\n");
+    break;
+  case FAERR_UNKNOWN:
+    wprintw(self->window, "Undefined error when adding friend.\n");
+    break;
+  default:
+    wprintw(self->window, "Friend added as %d.\n", num);
+    on_friendadded(num);
+    break;
+  }
+}
+
+void cmd_clear(ToxWindow *self, char **args)
+{
+  wclear(self->window);
+}
+
+void cmd_connect(ToxWindow *self, char **args)
+{
+  IP_Port dht;
+  char *ip = args[1];
+  char *port = args[2];
+  char *key = args[3];
+
+  if (atoi(port) == 0) {
+    wprintw(self->window, "Invalid syntax.\n");
+    return;
+  }
+
+  dht.port = htons(atoi(port));
+  uint32_t resolved_address = resolve_addr(ip);
+  if (resolved_address == 0) {
+    return;
+  }
+
+  dht.ip.i = resolved_address;
+  unsigned char *binary_string = hex_string_to_bin(key);
+  DHT_bootstrap(dht, binary_string);
+  free(binary_string);
+}
+
+void cmd_quit(ToxWindow *self, char **args)
+{
+  endwin();
+  exit(0);
+}
+
+void cmd_help(ToxWindow *self, char **args)
+{
+  wclear(self->window);
+  wattron(self->window, COLOR_PAIR(2) | A_BOLD);
+  wprintw(self->window, "Commands:\n");
+  wattroff(self->window, A_BOLD);
+
+  wprintw(self->window, "      connect <ip> <port> <key> : Connect to DHT server\n");
+  wprintw(self->window, "      add <id> <message>        : Add friend\n");
+  wprintw(self->window, "      status <type> <message>   : Set your status\n");
+  wprintw(self->window, "      statusmsg  <message>      : Set your status\n");
+  wprintw(self->window, "      nick <nickname>           : Set your nickname\n");
+  wprintw(self->window, "      accept <number>           : Accept friend request\n");
+  wprintw(self->window, "      myid                      : Print your ID\n");
+  wprintw(self->window, "      quit/exit                 : Exit program\n");
+  wprintw(self->window, "      help                      : Print this message again\n");
+  wprintw(self->window, "      clear                     : Clear this window\n");
+  
+  wattron(self->window, A_BOLD);
+  wprintw(self->window, "TIP: Use the TAB key to navigate through the tabs.\n\n");
+  wattroff(self->window, A_BOLD);
+
+  wattroff(self->window, COLOR_PAIR(2));
+}
+
+void cmd_msg(ToxWindow *self, char **args)
+{
+  char *id = args[1];
+  char *msg = args[2];
+  if (m_sendmessage(atoi(id), (uint8_t*) msg, strlen(msg)+1) == 0)
+    wprintw(self->window, "Error occurred while sending message.\n");
+  else
+    wprintw(self->window, "Message successfully sent.\n");
+}
+
+void cmd_myid(ToxWindow *self, char **args)
+{
+  char id[KEY_SIZE_BYTES*2 + 1] = {0};
+  size_t i;
+  for (i = 0; i < KEY_SIZE_BYTES; ++i) {
+    char xx[3];
+    snprintf(xx, sizeof(xx), "%02x", self_public_key[i] & 0xff);
+    strcat(id, xx);
+  }
+  wprintw(self->window, "Your ID: %s\n", id);
+}
+
+void cmd_nick(ToxWindow *self, char **args)
+{
+  char *nick = args[1];
+  setname((uint8_t*) nick, strlen(nick)+1);
+  wprintw(self->window, "Nickname set to: %s\n", nick);
+}
+
+void cmd_status(ToxWindow *self, char **args)
+{
+  char *status = args[1];
+  char *status_text;
+
+  USERSTATUS status_kind;
+  if (!strncmp(status, "online", strlen("online"))) {
+    status_kind = USERSTATUS_NONE;
+    status_text = "ONLINE";
+  }
+  else if (!strncmp(status, "away", strlen("away"))) {
+    status_kind = USERSTATUS_AWAY;
+    status_text = "AWAY";
+  }
+  else if (!strncmp(status, "busy", strlen("busy"))) {
+    status_kind = USERSTATUS_BUSY;
+    status_text = "BUSY";
+  }
+  else
+  {
+    wprintw(self->window, "Invalid status.\n");
+    return;
+  }
+
+  char *msg = args[2];
+  if (msg == NULL) {
+    m_set_userstatus(status_kind);
+    wprintw(self->window, "Status set to: %s\n", status_text);
+  }
+  else {
+    m_set_userstatus(status_kind);
+    m_set_statusmessage((uint8_t*) msg, strlen(msg)+1);
+    wprintw(self->window, "Status set to: %s, %s\n", status_text, msg);
+  }
+}
+
+void cmd_statusmsg(ToxWindow *self, char **args)
+{
+    char *msg = args[1];
+    m_set_statusmessage((uint8_t*) msg, strlen(msg)+1);
+    wprintw(self->window, "Status set to: %s\n", msg);
+}
+
 static void execute(ToxWindow *self, char *u_cmd)
 {
   int newlines = 0;
@@ -62,237 +299,43 @@ static void execute(ToxWindow *self, char *u_cmd)
     if (!isspace(cmd[cmd_end]))
       break;
   cmd[cmd_end + 1] = '\0';
-  
-/* What is this supposed to do?
-  if (cmd[0] == '/') {
-    wprintw(self->window,"Warning: Run your command without the /, this may not work\n");
-    int i;
-    for (i = 1; i < strlen(cmd); i++) { //This doesn't work when it doesn't end with a space and another word
-      cmd[i - 1] = cmd[i]; //Still working on why
-    }
-  }
-*/
 
-  if (!strcmp(cmd, "quit") || !strcmp(cmd, "exit") || !strcmp(cmd, "q")) {
+  char *args[4];
-    endwin();
+  args[0] = strtok(cmd, " ");
-    exit(0);
-  }
 
-  else if (!strncmp(cmd, "connect ", strlen("connect "))) {
+  /* no input */
-    IP_Port dht;
+  if (!args[0])
-    char *ip = strchr(cmd, ' ');
+    return;
-    if (ip == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
-      return;
-    }
-    ip++;
 
-    char *port = strchr(ip, ' ');
+  /* match input to command list */
-    if (port == NULL) {
+  for (i = 0; i < NUM_COMMANDS; i++) {
-      wprintw(self->window, "Invalid syntax.\n");
+    if (!strcmp(args[0], commands[i].name)) {
-      return;
+      /* read in arguments */
-    }
+      int j;
-    port[0] = 0;
+      for (j = 1; j <= commands[i].numargs; j++) {
-    port++;
+        args[j] = strtok(NULL, " ");
-
+        /* check for missing arguments */
-    char *key = strchr(port, ' ');
+        /* add is special because it can take either 1 or 2 arguments */
-    if (key == NULL) {
+        if (strcmp(args[0], "add") != 0 && args[j] == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
+          wprintw(self->window, "Invalid command: %s expected %d arguments, got %d.\n",
-      return;
+                  commands[i].name, commands[i].numargs, j - 1);
-    }
+          return;
-    key[0] = 0;
+        }
-    key++;
+      }
-
+      /* check for excess arguments */
-    if (atoi(port) == 0) {
+      /* add is special because the add message may contain spaces */
-      wprintw(self->window, "Invalid syntax.\n");
+      if (strcmp(args[0], "add") != 0 && strtok(NULL, " ") != NULL) {
-      return;
+        wprintw(self->window, "Invalid command: too many arguments to %s.\n", commands[i].name);
-    }
-
-    dht.port = htons(atoi(port));
-    uint32_t resolved_address = resolve_addr(ip);
-    if (resolved_address == 0) {
-      return;
-    }
-
-    dht.ip.i = resolved_address;
-    unsigned char *binary_string = hex_string_to_bin(key);
-    DHT_bootstrap(dht, binary_string);
-    free(binary_string);
-  }
-
-  else if (!strncmp(cmd, "add ", strlen("add "))) {
-    uint8_t id_bin[KEY_SIZE_BYTES];
-    char xx[3];
-    uint32_t x;
-    char *id = strchr(cmd, ' ');
-    if (id == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
-      return;
-    }
-    id++;
-    char *msg = strchr(id, ' ');
-    if (msg != NULL) {
-      msg[0] = 0;
-      msg++;
-    }
-    else msg = "";
-    if (strlen(id) != 2*KEY_SIZE_BYTES) {
-      wprintw(self->window, "Invalid ID length.\n");
-      return;
-    }
-    int i;
-    for (i = 0; i < KEY_SIZE_BYTES; ++i) {
-      xx[0] = id[2*i];
-      xx[1] = id[2*i+1];
-      xx[2] = '\0';
-      if (sscanf(xx, "%02x", &x) != 1) {
-        wprintw(self->window, "Invalid ID.\n");
         return;
       }
-      id_bin[i] = x;
+      /* pass arguments to command function */
-    }
+      (commands[i].func)(self, args);
-    int num = m_addfriend(id_bin, (uint8_t*) msg, strlen(msg)+1);
-    switch (num) {
-    case -1:
-      wprintw(self->window, "Message is too long.\n");
-      break;
-    case -2:
-      wprintw(self->window, "Please add a message to your request.\n");
-      break;
-    case -3:
-      wprintw(self->window, "That appears to be your own ID.\n");
-      break;
-    case -4:
-      wprintw(self->window, "Friend request already sent.\n");
-      break;
-    case -5:
-      wprintw(self->window, "Undefined error when adding friend.\n");
-      break;
-    default:
-      wprintw(self->window, "Friend added as %d.\n", num);
-      on_friendadded(num);
-      break;
-    }
-  }
-
-  else if (!strcmp(cmd, "clear")) {
-    wclear(self->window);
-  }
-
-  else if (!strcmp(cmd, "help")) {
-    wclear(self->window);
-    print_usage(self);
-  }
-
-  else if (!strncmp(cmd, "status ", strlen("status "))) {
-    char *status = strchr(cmd, ' ');
-    char *msg;
-    char *status_text;
-    if (status == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
       return;
     }
-    status++;
-    USERSTATUS status_kind;
-    if (!strncmp(status, "online", strlen("online"))) {
-      status_kind = USERSTATUS_NONE;
-      status_text = "ONLINE";
-    }
-
-    else if (!strncmp(status, "away", strlen("away"))) {
-      status_kind = USERSTATUS_AWAY;
-      status_text = "AWAY";
-    }
-
-    else if (!strncmp(status, "busy", strlen("busy"))) {
-      status_kind = USERSTATUS_BUSY;
-      status_text = "BUSY";
-    }
-
-    else
-    {
-      wprintw(self->window, "Invalid status.\n");
-      return;
-    }
-
-    msg = strchr(status, ' ');
-    if (msg == NULL) {
-      m_set_userstatus(status_kind);
-      wprintw(self->window, "Status set to: %s\n", status_text);
-    }
-    else {
-      msg++;
-      m_set_userstatus(status_kind);
-      m_set_statusmessage((uint8_t*) msg, strlen(msg)+1);
-      wprintw(self->window, "Status set to: %s, %s\n", status_text, msg);
-    }
   }
 
-  else if (!strncmp(cmd, "nick ", strlen("nick "))) {
+  /* no match */
-    char *nick = strchr(cmd, ' ');
+  wprintw(self->window, "Invalid command.\n");
-    if (nick == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
-      return;
-    }
-    nick++;
-    setname((uint8_t*) nick, strlen(nick)+1);
-    wprintw(self->window, "Nickname set to: %s\n", nick);
-  }
-
-  else if (!strcmp(cmd, "myid")) {
-    char id[KEY_SIZE_BYTES*2 + 1] = {0};
-    size_t i;
-    for (i = 0; i < KEY_SIZE_BYTES; ++i) {
-      char xx[3];
-      snprintf(xx, sizeof(xx), "%02x", self_public_key[i] & 0xff);
-      strcat(id, xx);
-    }
-    wprintw(self->window, "Your ID: %s\n", id);
-  }
-
-  else if (!strncmp(cmd, "accept ", strlen("accept "))) {
-    char *id = strchr(cmd, ' ');
-    if (id == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
-      return;
-    }
-    id++;
-
-    int num = atoi(id);
-    if (num >= num_requests) {
-      wprintw(self->window, "Invalid syntax.\n");
-      return;
-    }
-
-    num = m_addfriend_norequest(pending_requests[num]);
-    if (num == -1)
-      wprintw(self->window, "Failed to add friend.\n");
-    else {
-      wprintw(self->window, "Friend accepted as: %d.\n", num);
-      on_friendadded(num);
-    }
-  }
-
-  else if (!strncmp(cmd, "msg ", strlen("msg "))) {
-    char *id = strchr(cmd, ' ');
-    if (id == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
-      return;
-    }
-    char *msg = strchr(++id, ' ');
-    if (msg == NULL) {
-      wprintw(self->window, "Invalid syntax.\n");
-      return;
-    }
-    msg[0] = 0;
-    msg++;
-    if (m_sendmessage(atoi(id), (uint8_t*) msg, strlen(msg)+1) == 0)
-      wprintw(self->window, "Error occurred while sending message.\n");
-    else
-      wprintw(self->window, "Message successfully sent.\n");
-  }
-  else
-    wprintw(self->window, "Invalid command.\n");
 }
 
 static void prompt_onKey(ToxWindow *self, int key)
@@ -352,33 +395,10 @@ static void prompt_onDraw(ToxWindow *self)
   wrefresh(self->window);
 }
 
-static void print_usage(ToxWindow *self)
-{
-  wattron(self->window, COLOR_PAIR(2) | A_BOLD);
-  wprintw(self->window, "Commands:\n");
-  wattroff(self->window, A_BOLD);
-
-  wprintw(self->window, "      connect <ip> <port> <key> : Connect to DHT server\n");
-  wprintw(self->window, "      add <id> <message>        : Add friend\n");
-  wprintw(self->window, "      status <type> <message>   : Set your status\n");
-  wprintw(self->window, "      nick <nickname>           : Set your nickname\n");
-  wprintw(self->window, "      accept <number>           : Accept friend request\n");
-  wprintw(self->window, "      myid                      : Print your ID\n");
-  wprintw(self->window, "      quit/exit                 : Exit program\n");
-  wprintw(self->window, "      help                      : Print this message again\n");
-  wprintw(self->window, "      clear                     : Clear this window\n");
-  
-  wattron(self->window, A_BOLD);
-  wprintw(self->window, "TIP: Use the TAB key to navigate through the tabs.\n\n");
-  wattroff(self->window, A_BOLD);
-
-  wattroff(self->window, COLOR_PAIR(2));
-}
-
 static void prompt_onInit(ToxWindow *self)
 {
   scrollok(self->window, 1);
-  print_usage(self);
+  cmd_help(self, NULL);
   wclrtoeol(self->window);
 }