1 /* $OpenBSD: cmd-load-buffer.c,v 1.6 2009/09/07 18:50:45 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 <stdlib.h> 24 #include <string.h> 25 #include <unistd.h> 26 27 #include "tmux.h" 28 29 /* 30 * Loads a session paste buffer from a file. 31 */ 32 33 int cmd_load_buffer_exec(struct cmd *, struct cmd_ctx *); 34 35 const struct cmd_entry cmd_load_buffer_entry = { 36 "load-buffer", "loadb", 37 CMD_BUFFER_SESSION_USAGE " path", 38 CMD_ARG1, 0, 39 cmd_buffer_init, 40 cmd_buffer_parse, 41 cmd_load_buffer_exec, 42 cmd_buffer_free, 43 cmd_buffer_print 44 }; 45 46 int 47 cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx) 48 { 49 struct cmd_buffer_data *data = self->data; 50 struct session *s; 51 struct stat sb; 52 FILE *f; 53 u_char *buf; 54 u_int limit; 55 56 if ((s = cmd_find_session(ctx, data->target)) == NULL) 57 return (-1); 58 59 if (stat(data->arg, &sb) < 0) { 60 ctx->error(ctx, "%s: %s", data->arg, strerror(errno)); 61 return (-1); 62 } 63 64 if ((f = fopen(data->arg, "rb")) == NULL) { 65 ctx->error(ctx, "%s: %s", data->arg, strerror(errno)); 66 return (-1); 67 } 68 69 /* 70 * We don't want to die due to memory exhaustion, hence xmalloc can't 71 * be used here. 72 */ 73 if ((buf = malloc(sb.st_size + 1)) == NULL) { 74 ctx->error(ctx, "malloc error: %s", strerror(errno)); 75 fclose(f); 76 return (-1); 77 } 78 79 if (fread(buf, 1, sb.st_size, f) != (size_t) sb.st_size) { 80 ctx->error(ctx, "%s: fread error", data->arg); 81 xfree(buf); 82 fclose(f); 83 return (-1); 84 } 85 86 fclose(f); 87 88 limit = options_get_number(&s->options, "buffer-limit"); 89 if (data->buffer == -1) { 90 paste_add(&s->buffers, buf, sb.st_size, limit); 91 return (0); 92 } 93 if (paste_replace(&s->buffers, data->buffer, buf, sb.st_size) != 0) { 94 ctx->error(ctx, "no buffer %d", data->buffer); 95 xfree(buf); 96 return (-1); 97 } 98 99 return (0); 100 } 101