/* $OpenBSD: cmd-load-buffer.c,v 1.30 2014/09/01 21:50:18 nicm Exp $ */ /* * Copyright (c) 2009 Tiago Cunha * * 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 #include #include #include #include #include #include #include "tmux.h" /* * Loads a paste buffer from a file. */ enum cmd_retval cmd_load_buffer_exec(struct cmd *, struct cmd_q *); void cmd_load_buffer_callback(struct client *, int, void *); const struct cmd_entry cmd_load_buffer_entry = { "load-buffer", "loadb", "b:", 1, 1, CMD_BUFFER_USAGE " path", 0, NULL, cmd_load_buffer_exec }; enum cmd_retval cmd_load_buffer_exec(struct cmd *self, struct cmd_q *cmdq) { struct args *args = self->args; struct client *c = cmdq->client; struct session *s; FILE *f; const char *path, *bufname; char *pdata, *new_pdata, *cause; size_t psize; int ch, error, cwd, fd; bufname = NULL; if (args_has(args, 'b')) bufname = args_get(args, 'b'); path = args->argv[0]; if (strcmp(path, "-") == 0) { error = server_set_stdin_callback(c, cmd_load_buffer_callback, (void *)bufname, &cause); if (error != 0) { cmdq_error(cmdq, "%s: %s", path, cause); free(cause); return (CMD_RETURN_ERROR); } return (CMD_RETURN_WAIT); } if (c != NULL && c->session == NULL) cwd = c->cwd; else if ((s = cmd_current_session(cmdq, 0)) != NULL) cwd = s->cwd; else cwd = AT_FDCWD; if ((fd = openat(cwd, path, O_RDONLY)) == -1 || (f = fdopen(fd, "rb")) == NULL) { if (fd != -1) close(fd); cmdq_error(cmdq, "%s: %s", path, strerror(errno)); return (CMD_RETURN_ERROR); } pdata = NULL; psize = 0; while ((ch = getc(f)) != EOF) { /* Do not let the server die due to memory exhaustion. */ if ((new_pdata = realloc(pdata, psize + 2)) == NULL) { cmdq_error(cmdq, "realloc error: %s", strerror(errno)); goto error; } pdata = new_pdata; pdata[psize++] = ch; } if (ferror(f)) { cmdq_error(cmdq, "%s: read error", path); goto error; } if (pdata != NULL) pdata[psize] = '\0'; fclose(f); if (paste_set(pdata, psize, bufname, &cause) != 0) { cmdq_error(cmdq, "%s", cause); free(pdata); free(cause); return (CMD_RETURN_ERROR); } return (CMD_RETURN_NORMAL); error: free(pdata); if (f != NULL) fclose(f); return (CMD_RETURN_ERROR); } void cmd_load_buffer_callback(struct client *c, int closed, void *data) { const char *bufname = data; char *pdata, *cause; size_t psize; if (!closed) return; c->stdin_callback = NULL; c->references--; if (c->flags & CLIENT_DEAD) return; psize = EVBUFFER_LENGTH(c->stdin_data); if (psize == 0 || (pdata = malloc(psize + 1)) == NULL) goto out; memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize); pdata[psize] = '\0'; evbuffer_drain(c->stdin_data, psize); if (paste_set(pdata, psize, bufname, &cause) != 0) { /* No context so can't use server_client_msg_error. */ evbuffer_add_printf(c->stderr_data, "%s", cause); server_push_stderr(c); free(pdata); free(cause); } out: cmdq_continue(c->cmdq); }