1 /* $OpenBSD: cmd-save-buffer.c,v 1.14 2012/05/21 18:27:42 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 paste buffer to a file. 29 */ 30 31 int cmd_save_buffer_exec(struct cmd *, struct cmd_ctx *); 32 33 const struct cmd_entry cmd_save_buffer_entry = { 34 "save-buffer", "saveb", 35 "ab:", 1, 1, 36 "[-a] " CMD_BUFFER_USAGE " path", 37 0, 38 NULL, 39 NULL, 40 cmd_save_buffer_exec 41 }; 42 43 int 44 cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx) 45 { 46 struct args *args = self->args; 47 struct client *c = ctx->cmdclient; 48 struct session *s; 49 struct paste_buffer *pb; 50 const char *path, *newpath, *wd; 51 char *cause; 52 int buffer; 53 mode_t mask; 54 FILE *f; 55 56 if (!args_has(args, 'b')) { 57 if ((pb = paste_get_top(&global_buffers)) == NULL) { 58 ctx->error(ctx, "no buffers"); 59 return (-1); 60 } 61 } else { 62 buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause); 63 if (cause != NULL) { 64 ctx->error(ctx, "buffer %s", cause); 65 xfree(cause); 66 return (-1); 67 } 68 69 pb = paste_get_index(&global_buffers, buffer); 70 if (pb == NULL) { 71 ctx->error(ctx, "no buffer %d", buffer); 72 return (-1); 73 } 74 } 75 76 path = args->argv[0]; 77 if (strcmp(path, "-") == 0) { 78 if (c == NULL) { 79 ctx->error(ctx, "%s: can't write to stdout", path); 80 return (-1); 81 } 82 evbuffer_add(c->stdout_data, pb->data, pb->size); 83 server_push_stdout(c); 84 } else { 85 if (c != NULL) 86 wd = c->cwd; 87 else if ((s = cmd_current_session(ctx, 0)) != NULL) { 88 wd = options_get_string(&s->options, "default-path"); 89 if (*wd == '\0') 90 wd = s->cwd; 91 } else 92 wd = NULL; 93 if (wd != NULL && *wd != '\0') { 94 newpath = get_full_path(wd, path); 95 if (newpath != NULL) 96 path = newpath; 97 } 98 99 mask = umask(S_IRWXG | S_IRWXO); 100 if (args_has(self->args, 'a')) 101 f = fopen(path, "ab"); 102 else 103 f = fopen(path, "wb"); 104 umask(mask); 105 if (f == NULL) { 106 ctx->error(ctx, "%s: %s", path, strerror(errno)); 107 return (-1); 108 } 109 if (fwrite(pb->data, 1, pb->size, f) != pb->size) { 110 ctx->error(ctx, "%s: fwrite error", path); 111 fclose(f); 112 return (-1); 113 } 114 fclose(f); 115 } 116 117 return (0); 118 } 119