1 /* $OpenBSD: cmd-save-buffer.c,v 1.16 2012/07/11 07:10:15 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 26 #include "tmux.h" 27 28 /* 29 * Saves a paste buffer to a file. 30 */ 31 32 enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmd_ctx *); 33 34 const struct cmd_entry cmd_save_buffer_entry = { 35 "save-buffer", "saveb", 36 "ab:", 1, 1, 37 "[-a] " CMD_BUFFER_USAGE " path", 38 0, 39 NULL, 40 NULL, 41 cmd_save_buffer_exec 42 }; 43 44 enum cmd_retval 45 cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx) 46 { 47 struct args *args = self->args; 48 struct client *c = ctx->cmdclient; 49 struct session *s; 50 struct paste_buffer *pb; 51 const char *path, *newpath, *wd; 52 char *cause; 53 int buffer; 54 mode_t mask; 55 FILE *f; 56 57 if (!args_has(args, 'b')) { 58 if ((pb = paste_get_top(&global_buffers)) == NULL) { 59 ctx->error(ctx, "no buffers"); 60 return (CMD_RETURN_ERROR); 61 } 62 } else { 63 buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause); 64 if (cause != NULL) { 65 ctx->error(ctx, "buffer %s", cause); 66 free(cause); 67 return (CMD_RETURN_ERROR); 68 } 69 70 pb = paste_get_index(&global_buffers, buffer); 71 if (pb == NULL) { 72 ctx->error(ctx, "no buffer %d", buffer); 73 return (CMD_RETURN_ERROR); 74 } 75 } 76 77 path = args->argv[0]; 78 if (strcmp(path, "-") == 0) { 79 if (c == NULL) { 80 ctx->error(ctx, "%s: can't write to stdout", path); 81 return (CMD_RETURN_ERROR); 82 } 83 evbuffer_add(c->stdout_data, pb->data, pb->size); 84 server_push_stdout(c); 85 } else { 86 if (c != NULL) 87 wd = c->cwd; 88 else if ((s = cmd_current_session(ctx, 0)) != NULL) { 89 wd = options_get_string(&s->options, "default-path"); 90 if (*wd == '\0') 91 wd = s->cwd; 92 } else 93 wd = NULL; 94 if (wd != NULL && *wd != '\0') { 95 newpath = get_full_path(wd, path); 96 if (newpath != NULL) 97 path = newpath; 98 } 99 100 mask = umask(S_IRWXG | S_IRWXO); 101 if (args_has(self->args, 'a')) 102 f = fopen(path, "ab"); 103 else 104 f = fopen(path, "wb"); 105 umask(mask); 106 if (f == NULL) { 107 ctx->error(ctx, "%s: %s", path, strerror(errno)); 108 return (CMD_RETURN_ERROR); 109 } 110 if (fwrite(pb->data, 1, pb->size, f) != pb->size) { 111 ctx->error(ctx, "%s: fwrite error", path); 112 fclose(f); 113 return (CMD_RETURN_ERROR); 114 } 115 fclose(f); 116 } 117 118 return (CMD_RETURN_NORMAL); 119 } 120