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Sync OpenBSD patchset 181:

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Make all messages sent between the client and server fixed size.

This is the first of two changes to make the protocol more resilient and less
sensitive to other changes in the code, particularly with commands. The client
now packs argv into a buffer and sends it to the server for parsing, rather
than doing it itself and sending the parsed command data.

As a side-effect this also removes a lot of now-unused command marshalling
code.

Mixing a server without this change and a client with or vice versa will cause
tmux to hang or crash, please ensure that tmux is entirely killed before
upgrading.
This commit is contained in:
Tiago Cunha
2009-07-28 22:12:16 +00:00
parent f5c0695605
commit d637cb33da
82 changed files with 335 additions and 862 deletions
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27
cmd-split-window.c
View File

@@ -1,4 +1,4 @@
/* $Id: cmd-split-window.c,v 1.20 2009-07-23 13:10:38 tcunha Exp $ */
/* $Id: cmd-split-window.c,v 1.21 2009-07-28 22:12:16 tcunha Exp $ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -29,8 +29,6 @@
int cmd_split_window_parse(struct cmd *, int, char **, char **);
int cmd_split_window_exec(struct cmd *, struct cmd_ctx *);
void cmd_split_window_send(struct cmd *, struct buffer *);
void cmd_split_window_recv(struct cmd *, struct buffer *);
void cmd_split_window_free(struct cmd *);
void cmd_split_window_init(struct cmd *, int);
size_t cmd_split_window_print(struct cmd *, char *, size_t);
@@ -51,8 +49,6 @@ const struct cmd_entry cmd_split_window_entry = {
cmd_split_window_init,
cmd_split_window_parse,
cmd_split_window_exec,
cmd_split_window_send,
cmd_split_window_recv,
cmd_split_window_free,
cmd_split_window_print
};
@@ -211,27 +207,6 @@ error:
return (-1);
}
void
cmd_split_window_send(struct cmd *self, struct buffer *b)
{
struct cmd_split_window_data *data = self->data;
buffer_write(b, data, sizeof *data);
cmd_send_string(b, data->target);
cmd_send_string(b, data->cmd);
}
void
cmd_split_window_recv(struct cmd *self, struct buffer *b)
{
struct cmd_split_window_data *data;
self->data = data = xmalloc(sizeof *data);
buffer_read(b, data, sizeof *data);
data->target = cmd_recv_string(b);
data->cmd = cmd_recv_string(b);
}
void
cmd_split_window_free(struct cmd *self)
{