1 /* $OpenBSD: cfg.c,v 1.83 2021/04/07 12:50:12 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com> 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 21 #include <ctype.h> 22 #include <errno.h> 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <util.h> 27 28 #include "tmux.h" 29 30 struct client *cfg_client; 31 int cfg_finished; 32 static char **cfg_causes; 33 static u_int cfg_ncauses; 34 static struct cmdq_item *cfg_item; 35 36 int cfg_quiet = 1; 37 char **cfg_files; 38 u_int cfg_nfiles; 39 40 static enum cmd_retval 41 cfg_client_done(__unused struct cmdq_item *item, __unused void *data) 42 { 43 if (!cfg_finished) 44 return (CMD_RETURN_WAIT); 45 return (CMD_RETURN_NORMAL); 46 } 47 48 static enum cmd_retval 49 cfg_done(__unused struct cmdq_item *item, __unused void *data) 50 { 51 if (cfg_finished) 52 return (CMD_RETURN_NORMAL); 53 cfg_finished = 1; 54 55 if (!RB_EMPTY(&sessions)) 56 cfg_show_causes(RB_MIN(sessions, &sessions)); 57 58 if (cfg_item != NULL) 59 cmdq_continue(cfg_item); 60 61 status_prompt_load_history(); 62 63 return (CMD_RETURN_NORMAL); 64 } 65 66 void 67 start_cfg(void) 68 { 69 struct client *c; 70 u_int i; 71 72 /* 73 * Configuration files are loaded without a client, so commands are run 74 * in the global queue with item->client NULL. 75 * 76 * However, we must block the initial client (but just the initial 77 * client) so that its command runs after the configuration is loaded. 78 * Because start_cfg() is called so early, we can be sure the client's 79 * command queue is currently empty and our callback will be at the 80 * front - we need to get in before MSG_COMMAND. 81 */ 82 cfg_client = c = TAILQ_FIRST(&clients); 83 if (c != NULL) { 84 cfg_item = cmdq_get_callback(cfg_client_done, NULL); 85 cmdq_append(c, cfg_item); 86 } 87 88 for (i = 0; i < cfg_nfiles; i++) { 89 if (cfg_quiet) 90 load_cfg(cfg_files[i], c, NULL, CMD_PARSE_QUIET, NULL); 91 else 92 load_cfg(cfg_files[i], c, NULL, 0, NULL); 93 } 94 95 cmdq_append(NULL, cmdq_get_callback(cfg_done, NULL)); 96 } 97 98 int 99 load_cfg(const char *path, struct client *c, struct cmdq_item *item, int flags, 100 struct cmdq_item **new_item) 101 { 102 FILE *f; 103 struct cmd_parse_input pi; 104 struct cmd_parse_result *pr; 105 struct cmdq_item *new_item0; 106 struct cmdq_state *state; 107 108 if (new_item != NULL) 109 *new_item = NULL; 110 111 log_debug("loading %s", path); 112 if ((f = fopen(path, "rb")) == NULL) { 113 if (errno == ENOENT && (flags & CMD_PARSE_QUIET)) 114 return (0); 115 cfg_add_cause("%s: %s", path, strerror(errno)); 116 return (-1); 117 } 118 119 memset(&pi, 0, sizeof pi); 120 pi.flags = flags; 121 pi.file = path; 122 pi.line = 1; 123 pi.item = item; 124 pi.c = c; 125 126 pr = cmd_parse_from_file(f, &pi); 127 fclose(f); 128 if (pr->status == CMD_PARSE_EMPTY) 129 return (0); 130 if (pr->status == CMD_PARSE_ERROR) { 131 cfg_add_cause("%s", pr->error); 132 free(pr->error); 133 return (-1); 134 } 135 if (flags & CMD_PARSE_PARSEONLY) { 136 cmd_list_free(pr->cmdlist); 137 return (0); 138 } 139 140 if (item != NULL) 141 state = cmdq_copy_state(cmdq_get_state(item)); 142 else 143 state = cmdq_new_state(NULL, NULL, 0); 144 cmdq_add_format(state, "current_file", "%s", pi.file); 145 146 new_item0 = cmdq_get_command(pr->cmdlist, state); 147 if (item != NULL) 148 new_item0 = cmdq_insert_after(item, new_item0); 149 else 150 new_item0 = cmdq_append(NULL, new_item0); 151 cmd_list_free(pr->cmdlist); 152 cmdq_free_state(state); 153 154 if (new_item != NULL) 155 *new_item = new_item0; 156 return (0); 157 } 158 159 int 160 load_cfg_from_buffer(const void *buf, size_t len, const char *path, 161 struct client *c, struct cmdq_item *item, int flags, 162 struct cmdq_item **new_item) 163 { 164 struct cmd_parse_input pi; 165 struct cmd_parse_result *pr; 166 struct cmdq_item *new_item0; 167 struct cmdq_state *state; 168 169 if (new_item != NULL) 170 *new_item = NULL; 171 172 log_debug("loading %s", path); 173 174 memset(&pi, 0, sizeof pi); 175 pi.flags = flags; 176 pi.file = path; 177 pi.line = 1; 178 pi.item = item; 179 pi.c = c; 180 181 pr = cmd_parse_from_buffer(buf, len, &pi); 182 if (pr->status == CMD_PARSE_EMPTY) 183 return (0); 184 if (pr->status == CMD_PARSE_ERROR) { 185 cfg_add_cause("%s", pr->error); 186 free(pr->error); 187 return (-1); 188 } 189 if (flags & CMD_PARSE_PARSEONLY) { 190 cmd_list_free(pr->cmdlist); 191 return (0); 192 } 193 194 if (item != NULL) 195 state = cmdq_copy_state(cmdq_get_state(item)); 196 else 197 state = cmdq_new_state(NULL, NULL, 0); 198 cmdq_add_format(state, "current_file", "%s", pi.file); 199 200 new_item0 = cmdq_get_command(pr->cmdlist, state); 201 if (item != NULL) 202 new_item0 = cmdq_insert_after(item, new_item0); 203 else 204 new_item0 = cmdq_append(NULL, new_item0); 205 cmd_list_free(pr->cmdlist); 206 cmdq_free_state(state); 207 208 if (new_item != NULL) 209 *new_item = new_item0; 210 return (0); 211 } 212 213 void 214 cfg_add_cause(const char *fmt, ...) 215 { 216 va_list ap; 217 char *msg; 218 219 va_start(ap, fmt); 220 xvasprintf(&msg, fmt, ap); 221 va_end(ap); 222 223 cfg_ncauses++; 224 cfg_causes = xreallocarray(cfg_causes, cfg_ncauses, sizeof *cfg_causes); 225 cfg_causes[cfg_ncauses - 1] = msg; 226 } 227 228 void 229 cfg_print_causes(struct cmdq_item *item) 230 { 231 u_int i; 232 233 for (i = 0; i < cfg_ncauses; i++) { 234 cmdq_print(item, "%s", cfg_causes[i]); 235 free(cfg_causes[i]); 236 } 237 238 free(cfg_causes); 239 cfg_causes = NULL; 240 cfg_ncauses = 0; 241 } 242 243 void 244 cfg_show_causes(struct session *s) 245 { 246 struct window_pane *wp; 247 struct window_mode_entry *wme; 248 u_int i; 249 250 if (s == NULL || cfg_ncauses == 0) 251 return; 252 wp = s->curw->window->active; 253 254 wme = TAILQ_FIRST(&wp->modes); 255 if (wme == NULL || wme->mode != &window_view_mode) 256 window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL); 257 for (i = 0; i < cfg_ncauses; i++) { 258 window_copy_add(wp, "%s", cfg_causes[i]); 259 free(cfg_causes[i]); 260 } 261 262 free(cfg_causes); 263 cfg_causes = NULL; 264 cfg_ncauses = 0; 265 } 266