mirror of https://github.com/tmux/tmux.git
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "tmux.h"
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/*
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* Loads a session paste buffer from a file.
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*/
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int cmd_load_buffer_exec(struct cmd *, struct cmd_ctx *);
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const struct cmd_entry cmd_load_buffer_entry = {
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"load-buffer", "loadb",
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CMD_BUFFER_SESSION_USAGE " path",
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CMD_ARG1, "",
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cmd_buffer_init,
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cmd_buffer_parse,
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cmd_load_buffer_exec,
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cmd_buffer_free,
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cmd_buffer_print
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};
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int
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cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
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{
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struct cmd_buffer_data *data = self->data;
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struct session *s;
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struct stat sb;
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FILE *f;
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char *pdata = NULL;
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size_t psize;
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u_int limit;
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if ((s = cmd_find_session(ctx, data->target)) == NULL)
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return (-1);
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if ((f = fopen(data->arg, "rb")) == NULL) {
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ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
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return (-1);
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}
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if (fstat(fileno(f), &sb) < 0) {
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ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
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goto error;
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}
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if (sb.st_size <= 0 || (uintmax_t) sb.st_size > SIZE_MAX) {
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ctx->error(ctx, "%s: file empty or too large", data->arg);
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goto error;
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}
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psize = (size_t) sb.st_size;
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/*
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* We don't want to die due to memory exhaustion, hence xmalloc can't
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* be used here.
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*/
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if ((pdata = malloc(psize)) == NULL) {
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ctx->error(ctx, "malloc error: %s", strerror(errno));
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goto error;
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}
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if (fread(pdata, 1, psize, f) != psize) {
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ctx->error(ctx, "%s: fread error", data->arg);
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goto error;
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}
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fclose(f);
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limit = options_get_number(&s->options, "buffer-limit");
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if (data->buffer == -1) {
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paste_add(&s->buffers, pdata, psize, limit);
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return (0);
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}
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if (paste_replace(&s->buffers, data->buffer, pdata, psize) != 0) {
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ctx->error(ctx, "no buffer %d", data->buffer);
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goto error;
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}
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return (0);
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error:
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if (pdata != NULL)
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xfree(pdata);
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fclose(f);
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return (-1);
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}
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