cmd-save-buffer.c revision 1.3 
1/* $OpenBSD: cmd-save-buffer.c,v 1.3 2009/07/26 12:58:44 nicm Exp $ */
2
3/*
4 * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <sys/types.h>
20#include <sys/stat.h>
21
22#include <errno.h>
23#include <string.h>
24
25#include "tmux.h"
26
27/*
28 * Saves a session paste buffer to a file.
29 */
30
31int	cmd_save_buffer_exec(struct cmd *, struct cmd_ctx *);
32
33const struct cmd_entry cmd_save_buffer_entry = {
34	"save-buffer", "saveb",
35	"[-a] " CMD_BUFFER_SESSION_USAGE " path",
36	CMD_ARG1, CMD_CHFLAG('a'),
37	cmd_buffer_init,
38	cmd_buffer_parse,
39	cmd_save_buffer_exec,
40	cmd_buffer_free,
41	cmd_buffer_print
42};
43
44int
45cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
46{
47	struct cmd_buffer_data	*data = self->data;
48	struct session		*s;
49	struct paste_buffer	*pb;
50	mode_t			mask;
51	FILE			*f;
52
53	if ((s = cmd_find_session(ctx, data->target)) == NULL)
54		return (-1);
55
56	if (data->buffer == -1) {
57		if ((pb = paste_get_top(&s->buffers)) == NULL) {
58			ctx->error(ctx, "no buffers");
59			return (-1);
60		}
61	} else {
62		if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
63			ctx->error(ctx, "no buffer %d", data->buffer);
64			return (-1);
65		}
66	}
67
68	mask = umask(S_IRWXG | S_IRWXO);
69	if (data->chflags & CMD_CHFLAG('a'))
70		f = fopen(data->arg, "ab");
71	else
72		f = fopen(data->arg, "wb");
73	if (f == NULL) {
74		ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
75		return (-1);
76	}
77
78	if (fwrite(pb->data, 1, strlen(pb->data), f) != strlen(pb->data)) {
79	    	ctx->error(ctx, "%s: fwrite error", data->arg);
80	    	fclose(f);
81	    	return (-1);
82	}
83
84	fclose(f);
85	umask(mask);
86
87	return (0);
88}
89