1 /* $OpenBSD: control.c,v 1.10 2013/03/26 10:54:48 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 #include <time.h> 26 27 #include "tmux.h" 28 29 /* Write a line. */ 30 void printflike2 31 control_write(struct client *c, const char *fmt, ...) 32 { 33 va_list ap; 34 35 va_start(ap, fmt); 36 evbuffer_add_vprintf(c->stdout_data, fmt, ap); 37 va_end(ap); 38 39 evbuffer_add(c->stdout_data, "\n", 1); 40 server_push_stdout(c); 41 } 42 43 /* Write a buffer, adding a terminal newline. Empties buffer. */ 44 void 45 control_write_buffer(struct client *c, struct evbuffer *buffer) 46 { 47 evbuffer_add_buffer(c->stdout_data, buffer); 48 evbuffer_add(c->stdout_data, "\n", 1); 49 server_push_stdout(c); 50 } 51 52 /* Control input callback. Read lines and fire commands. */ 53 void 54 control_callback(struct client *c, int closed, unused void *data) 55 { 56 char *line, *cause; 57 struct cmd_list *cmdlist; 58 59 if (closed) 60 c->flags |= CLIENT_EXIT; 61 62 for (;;) { 63 line = evbuffer_readln(c->stdin_data, NULL, EVBUFFER_EOL_LF); 64 if (line == NULL) 65 break; 66 if (*line == '\0') { /* empty line exit */ 67 c->flags |= CLIENT_EXIT; 68 break; 69 } 70 71 if (cmd_string_parse(line, &cmdlist, NULL, 0, &cause) != 0) { 72 c->cmdq->time = time(NULL); 73 c->cmdq->number++; 74 75 cmdq_guard(c->cmdq, "begin"); 76 control_write(c, "parse error: %s", cause); 77 cmdq_guard(c->cmdq, "error"); 78 79 free(cause); 80 } else { 81 cmdq_run(c->cmdq, cmdlist); 82 cmd_list_free(cmdlist); 83 } 84 85 free(line); 86 } 87 } 88