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/* $OpenBSD: cmd-load-buffer.c,v 1.10 2009/11/26 22:32:00 nicm Exp $ */
/*
* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
*
* 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 <sys/stat.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "tmux.h"
/*
* Loads a session paste buffer from a file.
*/
int cmd_load_buffer_exec(struct cmd *, struct cmd_ctx *);
const struct cmd_entry cmd_load_buffer_entry = {
"load-buffer", "loadb",
CMD_BUFFER_SESSION_USAGE " path",
CMD_ARG1, "",
cmd_buffer_init,
cmd_buffer_parse,
cmd_load_buffer_exec,
cmd_buffer_free,
cmd_buffer_print
};
int
cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
{
struct cmd_buffer_data *data = self->data;
struct session *s;
struct stat sb;
FILE *f;
char *pdata = NULL;
size_t psize;
u_int limit;
if ((s = cmd_find_session(ctx, data->target)) == NULL)
return (-1);
if ((f = fopen(data->arg, "rb")) == NULL) {
ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
return (-1);
}
if (fstat(fileno(f), &sb) < 0) {
ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
goto error;
}
if (sb.st_size <= 0 || (uintmax_t) sb.st_size > SIZE_MAX) {
ctx->error(ctx, "%s: file empty or too large", data->arg);
goto error;
}
psize = (size_t) sb.st_size;
/*
* We don't want to die due to memory exhaustion, hence xmalloc can't
* be used here.
*/
if ((pdata = malloc(psize)) == NULL) {
ctx->error(ctx, "malloc error: %s", strerror(errno));
goto error;
}
if (fread(pdata, 1, psize, f) != psize) {
ctx->error(ctx, "%s: fread error", data->arg);
goto error;
}
fclose(f);
limit = options_get_number(&s->options, "buffer-limit");
if (data->buffer == -1) {
paste_add(&s->buffers, pdata, psize, limit);
return (0);
}
if (paste_replace(&s->buffers, data->buffer, pdata, psize) != 0) {
ctx->error(ctx, "no buffer %d", data->buffer);
goto error;
}
return (0);
error:
if (pdata != NULL)
xfree(pdata);
fclose(f);
return (-1);
}
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