1 /* $OpenBSD: control.c,v 1.9 2013/03/25 11:35:55 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2012 Nicholas Marriott <nicm@users.sourceforge.net> 5 * Copyright (c) 2012 George Nachman <tmux@georgester.com> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 16 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 17 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/types.h> 21 22 #include <event.h> 23 #include <stdlib.h> 24 #include <string.h> 25 26 #include "tmux.h" 27 28 /* Write a line. */ 29 void printflike2 30 control_write(struct client *c, const char *fmt, ...) 31 { 32 va_list ap; 33 34 va_start(ap, fmt); 35 evbuffer_add_vprintf(c->stdout_data, fmt, ap); 36 va_end(ap); 37 38 evbuffer_add(c->stdout_data, "\n", 1); 39 server_push_stdout(c); 40 } 41 42 /* Write a buffer, adding a terminal newline. Empties buffer. */ 43 void 44 control_write_buffer(struct client *c, struct evbuffer *buffer) 45 { 46 evbuffer_add_buffer(c->stdout_data, buffer); 47 evbuffer_add(c->stdout_data, "\n", 1); 48 server_push_stdout(c); 49 } 50 51 /* Control input callback. Read lines and fire commands. */ 52 void 53 control_callback(struct client *c, int closed, unused void *data) 54 { 55 char *line, *cause; 56 struct cmd_list *cmdlist; 57 58 if (closed) 59 c->flags |= CLIENT_EXIT; 60 61 for (;;) { 62 line = evbuffer_readln(c->stdin_data, NULL, EVBUFFER_EOL_LF); 63 if (line == NULL) 64 break; 65 if (*line == '\0') { /* empty line exit */ 66 c->flags |= CLIENT_EXIT; 67 break; 68 } 69 70 if (cmd_string_parse(line, &cmdlist, NULL, 0, &cause) != 0) { 71 c->cmdq->time = time(NULL); 72 c->cmdq->number++; 73 74 cmdq_guard(c->cmdq, "begin"); 75 control_write(c, "parse error: %s", cause); 76 cmdq_guard(c->cmdq, "error"); 77 78 free(cause); 79 } else { 80 cmdq_run(c->cmdq, cmdlist); 81 cmd_list_free(cmdlist); 82 } 83 84 free(line); 85 } 86 } 87