Start command validation

Makefile

@@ -16,7 +16,7 @@ input_win.o: windows.h
 jabber.o: jabber.h log.h windows.h
 profanity.o: log.h windows.h jabber.h command.h
 util.o: util.h
-command.o: command.h
+command.o: command.h util.h
 main.o: log.h windows.h profanity.h
 
 .PHONY: clean

command.c

@@ -3,6 +3,7 @@
 #include "command.h"
 #include "jabber.h"
 #include "windows.h"
+#include "util.h"
 
 static int _cmd_quit(void);
 static int _cmd_help(void);
@@ -10,32 +11,58 @@ static int _cmd_who(void);
 static int _cmd_msg(char *cmd);
 static int _cmd_close(char *cmd);
 static int _cmd_default(char *cmd);
+static int _valid_start_command(char *cmd);
 
-int handle_start_command(char *cmd)
+int handle_start_command(char *inp)
 {
     int result;
+    
+    // trim input and take a copy
+    char inp_cpy[100];
+    inp = trim(inp);
+    strcpy(inp_cpy, inp);
+    
+    // get the command "/command"
+    char *command = strtok(inp_cpy, " ");
 
-    if (strcmp(cmd, "/quit") == 0) {
+    // handle invalid commands
+    if (!_valid_start_command(command)) {
+        cons_bad_command(command);
+        gui_refresh();
+        result = AWAIT_COMMAND;
+
+    // quit
+    } else if (strcmp(command, "/quit") == 0) {
         result = QUIT_PROF;
-    } else if (strncmp(cmd, "/help", 5) == 0) {
+
+    // help
+    } else if (strcmp(command, "/help") == 0) {
         cons_help();
         gui_refresh();
         result = AWAIT_COMMAND;
-    } else if (strncmp(cmd, "/connect ", 9) == 0) {
-        char *user;
-        user = strndup(cmd+9, strlen(cmd)-9);
 
-        status_bar_get_password();
-        status_bar_refresh();
-        char passwd[20];
-        inp_get_password(passwd);
-        int connect_status = jabber_connect(user, passwd);
-        if (connect_status == CONNECTING)
-            result = START_MAIN;
-        else
+    // connect
+    } else if (strcmp(command, "/connect") == 0) {
+        if (strlen(inp) < 10) {
+            cons_bad_connect();
+            gui_refresh();
             result = AWAIT_COMMAND;
+        } else {
+            char *user;
+            user = strndup(inp+9, strlen(inp)-9);
+
+            status_bar_get_password();
+            status_bar_refresh();
+            char passwd[20];
+            inp_get_password(passwd);
+            int connect_status = jabber_connect(user, passwd);
+            if (connect_status == CONNECTING)
+                result = START_MAIN;
+            else
+                result = AWAIT_COMMAND;
+            }
     } else {
-        cons_bad_command(cmd);
+        cons_bad_command(inp);
         gui_refresh();
         result = AWAIT_COMMAND;
     }
@@ -130,3 +157,10 @@ static int _cmd_default(char *cmd)
 
     return TRUE;
 }
+
+static int _valid_start_command(char *cmd)
+{
+    return ((strcmp(cmd, "/quit") == 0) || 
+            (strcmp(cmd, "/help") == 0) ||
+            (strcmp(cmd, "/connect") == 0));
+}

command.h

@@ -5,7 +5,7 @@
 #define START_MAIN 2
 #define QUIT_PROF 3
 
-int handle_start_command(char *cmd);
+int handle_start_command(char *inp);
 int handle_command(char *cmd);
 
 #endif

util.c

@@ -1,4 +1,6 @@
 #include <time.h>
+#include <string.h>
+#include <ctype.h>
 
 void get_time(char *thetime)
 {
@@ -11,3 +13,22 @@ void get_time(char *thetime)
     strftime(thetime, 80, "%H:%M", timeinfo);
 }
 
+char *trim(char *str)
+{
+    char *end;
+
+    while (isspace(*str)) 
+        str++;
+
+    if (*str == 0)
+      return str;
+
+    end = str + strlen(str) - 1;
+    while (end > str && isspace(*end)) 
+        end--;
+
+    *(end+1) = 0;
+
+    return str;
+}
+

util.h

@@ -2,5 +2,6 @@
 #define UTIL_H
 
 void get_time(char *thetime);
+char *trim(char *str);
 
 #endif

windows.c

@@ -220,6 +220,15 @@ void cons_bad_command(char *cmd)
     wprintw(_wins[0].win, " [%s] Unknown command: %s\n", tstmp, cmd);
 }
 
+void cons_bad_connect(void)
+{
+    char tstmp[80];
+    get_time(tstmp);
+
+    wprintw(_wins[0].win, 
+        " [%s] Usage: /connect user@host\n", tstmp);
+}
+
 static void _create_windows(void)
 {
     int rows, cols;

windows.h

@@ -36,6 +36,7 @@ void win_show_outgoing_msg(char *from, char *to, char *message);
 // console window actions
 void cons_help(void);
 void cons_bad_command(char *cmd);
+void cons_bad_connect(void);
 void cons_show(char *cmd);
 
 // status bar actions