tmux/cmd-paste-buffer.c
Nicholas Marriott 29ac832cb3 Fix two copy/paste bugs: forbid zero-length buffers to prevent a fatal error
when trying to paste them, found by me, and miscalculation of the start/end
causing random fatal errors when copying in copy-mode, reported by sthen.
2009-07-02 16:23:54 +00:00

79 lines
2.1 KiB
C

/* $Id: cmd-paste-buffer.c,v 1.16 2009-07-02 16:23:54 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
/*
* Paste paste buffer if present.
*/
int cmd_paste_buffer_exec(struct cmd *, struct cmd_ctx *);
const struct cmd_entry cmd_paste_buffer_entry = {
"paste-buffer", "pasteb",
"[-d] " CMD_BUFFER_WINDOW_USAGE,
CMD_DFLAG,
cmd_buffer_init,
cmd_buffer_parse,
cmd_paste_buffer_exec,
cmd_buffer_send,
cmd_buffer_recv,
cmd_buffer_free,
cmd_buffer_print
};
int
cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
{
struct cmd_buffer_data *data = self->data;
struct winlink *wl;
struct window *w;
struct session *s;
struct paste_buffer *pb;
if ((wl = cmd_find_window(ctx, data->target, &s)) == NULL)
return (-1);
w = wl->window;
if (data->buffer == -1)
pb = paste_get_top(&s->buffers);
else {
if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
ctx->error(ctx, "no buffer %d", data->buffer);
return (-1);
}
}
if (pb != NULL && *pb->data != '\0')
buffer_write(w->active->out, pb->data, strlen(pb->data));
/* Delete the buffer if -d. */
if (data->flags & CMD_DFLAG) {
if (data->buffer == -1)
paste_free_top(&s->buffers);
else
paste_free_index(&s->buffers, data->buffer);
}
return (0);
}