[hackers] [ii] prevent nick collisions by only setting the nick after the server accepted it and print a message about change to server log || Nico Golde

[git]

commit 1bc3e103c0cc59b32018c3680f8c97bad4191cce
Author:     Nico Golde <n...@suckless.org>
AuthorDate: Wed Nov 4 19:35:23 2015 -0500
Commit:     Nico Golde <n...@suckless.org>
CommitDate: Wed Nov 4 19:35:23 2015 -0500

    prevent nick collisions by only setting the nick after the server accepted 
it and print a message about change to server log

diff --git a/ii.c b/ii.c
index 8f6a42f..9ea8bbc 100644
--- a/ii.c
+++ b/ii.c
@@ -38,6 +38,7 @@ static time_t last_response;
 static Channel *channels = NULL;
 static char *host = "irc.freenode.net";
 static char nick[32];                  /* might change while running */
+static char _nick[32];                 /* might change while running */
 static char path[_POSIX_PATH_MAX];
 static char message[PIPE_BUF]; /* message buf used for communication */
 
@@ -261,7 +262,7 @@ static void proc_channels_input(Channel *c, char *buf) {
                        break;
                case 'n':
                        if(strlen(buf)>=3){
-                               snprintf(nick, sizeof(nick),"%s", &buf[3]);
+                               snprintf(_nick, sizeof(nick),"%s", &buf[3]);
                                snprintf(message, PIPE_BUF, "NICK %s\r\n", 
&buf[3]);
                        }
                        break;
@@ -357,7 +358,11 @@ static void proc_server_cmd(char *buf) {
                snprintf(message, PIPE_BUF, "-!- %s changed mode/%s -> %s %s", 
argv[TOK_NICKSRV], argv[TOK_CMD + 1] ? argv[TOK_CMD + 1] : "" , argv[TOK_CMD + 
2]? argv[TOK_CMD + 2] : "", argv[TOK_CMD + 3] ? argv[TOK_CMD + 3] : "");
        else if(!strncmp("QUIT", argv[TOK_CMD], 5))
                snprintf(message, PIPE_BUF, "-!- %s(%s) has quit \"%s\"", 
argv[TOK_NICKSRV], argv[TOK_USER], argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
-       else if(!strncmp("NICK", argv[TOK_CMD], 5))
+       else if(!strncmp("NICK", argv[TOK_CMD], 5) && !strcmp(_nick, 
argv[TOK_TEXT])) {
+               snprintf(nick, sizeof(nick), "%s", _nick);
+               snprintf(message, PIPE_BUF, "-!- changed nick to \"%s\"", nick);
+               print_out(NULL, message);
+       } else if(!strncmp("NICK", argv[TOK_CMD], 5))
                snprintf(message, PIPE_BUF, "-!- %s changed nick to %s", 
argv[TOK_NICKSRV], argv[TOK_TEXT]);
        else if(!strncmp("TOPIC", argv[TOK_CMD], 6))
                snprintf(message, PIPE_BUF, "-!- %s changed topic to \"%s\"", 
argv[TOK_NICKSRV], argv[TOK_TEXT] ? argv[TOK_TEXT] : "");