Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.71
1.71 ! nicm 1: /* $OpenBSD: cmd-run-shell.c,v 1.70 2021/01/01 08:36:51 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
1.3 nicm 5: * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
1.1 nicm 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: #include <sys/wait.h>
22:
1.12 nicm 23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
25:
26: #include "tmux.h"
27:
28: /*
29: * Runs a command without a window.
30: */
31:
1.41 nicm 32: static enum cmd_retval cmd_run_shell_exec(struct cmd *, struct cmdq_item *);
1.14 nicm 33:
1.60 nicm 34: static void cmd_run_shell_timer(int, short, void *);
1.38 nicm 35: static void cmd_run_shell_callback(struct job *);
36: static void cmd_run_shell_free(void *);
37: static void cmd_run_shell_print(struct job *, const char *);
1.2 nicm 38:
1.1 nicm 39: const struct cmd_entry cmd_run_shell_entry = {
1.34 nicm 40: .name = "run-shell",
41: .alias = "run",
42:
1.70 nicm 43: .args = { "bd:Ct:", 0, 1 },
44: .usage = "[-bC] [-d delay] " CMD_TARGET_PANE_USAGE " [shell-command]",
1.34 nicm 45:
1.49 nicm 46: .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
1.35 nicm 47:
48: .flags = 0,
1.34 nicm 49: .exec = cmd_run_shell_exec
1.1 nicm 50: };
51:
1.2 nicm 52: struct cmd_run_shell_data {
1.70 nicm 53: struct client *client;
1.41 nicm 54: char *cmd;
1.70 nicm 55: int shell;
1.60 nicm 56: char *cwd;
1.41 nicm 57: struct cmdq_item *item;
1.60 nicm 58: struct session *s;
1.41 nicm 59: int wp_id;
1.60 nicm 60: struct event timer;
1.69 nicm 61: int flags;
1.70 nicm 62: struct cmd_parse_input pi;
1.2 nicm 63: };
64:
1.38 nicm 65: static void
1.14 nicm 66: cmd_run_shell_print(struct job *job, const char *msg)
67: {
1.54 nicm 68: struct cmd_run_shell_data *cdata = job_get_data(job);
1.21 nicm 69: struct window_pane *wp = NULL;
1.43 nicm 70: struct cmd_find_state fs;
1.58 nicm 71: struct window_mode_entry *wme;
1.14 nicm 72:
1.21 nicm 73: if (cdata->wp_id != -1)
74: wp = window_pane_find_by_id(cdata->wp_id);
1.43 nicm 75: if (wp == NULL) {
76: if (cdata->item != NULL) {
77: cmdq_print(cdata->item, "%s", msg);
78: return;
79: }
1.51 nicm 80: if (cmd_find_from_nothing(&fs, 0) != 0)
1.43 nicm 81: return;
82: wp = fs.wp;
83: if (wp == NULL)
84: return;
1.14 nicm 85: }
86:
1.58 nicm 87: wme = TAILQ_FIRST(&wp->modes);
88: if (wme == NULL || wme->mode != &window_view_mode)
1.64 nicm 89: window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
1.56 nicm 90: window_copy_add(wp, "%s", msg);
1.14 nicm 91: }
92:
1.38 nicm 93: static enum cmd_retval
1.41 nicm 94: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 95: {
1.65 nicm 96: struct args *args = cmd_get_args(self);
1.66 nicm 97: struct cmd_find_state *target = cmdq_get_target(item);
1.2 nicm 98: struct cmd_run_shell_data *cdata;
1.70 nicm 99: struct client *tc = cmdq_get_target_client(item);
1.66 nicm 100: struct session *s = target->s;
101: struct window_pane *wp = target->wp;
1.60 nicm 102: const char *delay;
103: double d;
104: struct timeval tv;
105: char *end;
1.70 nicm 106: int wait = !args_has(args, 'b');
107:
108: if ((delay = args_get(args, 'd')) != NULL) {
109: d = strtod(delay, &end);
110: if (*end != '\0') {
111: cmdq_error(item, "invalid delay time: %s", delay);
112: return (CMD_RETURN_ERROR);
113: }
114: } else if (args->argc == 0)
115: return (CMD_RETURN_NORMAL);
1.40 nicm 116:
1.37 nicm 117: cdata = xcalloc(1, sizeof *cdata);
1.60 nicm 118: if (args->argc != 0)
1.67 nicm 119: cdata->cmd = format_single_from_target(item, args->argv[0]);
1.2 nicm 120:
1.70 nicm 121: cdata->shell = !args_has(args, 'C');
122: if (!cdata->shell) {
123: memset(&cdata->pi, 0, sizeof cdata->pi);
124: cmd_get_source(self, &cdata->pi.file, &cdata->pi.line);
125: if (wait)
126: cdata->pi.item = item;
127: cdata->pi.c = tc;
128: cmd_find_copy_state(&cdata->pi.fs, target);
129: }
130:
1.40 nicm 131: if (args_has(args, 't') && wp != NULL)
132: cdata->wp_id = wp->id;
133: else
134: cdata->wp_id = -1;
135:
1.70 nicm 136: if (wait) {
137: cdata->client = cmdq_get_client(item);
1.41 nicm 138: cdata->item = item;
1.70 nicm 139: } else {
140: cdata->client = tc;
1.69 nicm 141: cdata->flags |= JOB_NOWAIT;
1.70 nicm 142: }
143: if (cdata->client != NULL)
144: cdata->client->references++;
1.2 nicm 145:
1.66 nicm 146: cdata->cwd = xstrdup(server_client_get_cwd(cmdq_get_client(item), s));
1.70 nicm 147:
1.60 nicm 148: cdata->s = s;
1.61 nicm 149: if (s != NULL)
150: session_add_ref(s, __func__);
1.60 nicm 151:
152: evtimer_set(&cdata->timer, cmd_run_shell_timer, cdata);
1.70 nicm 153: if (delay != NULL) {
1.60 nicm 154: timerclear(&tv);
155: tv.tv_sec = (time_t)d;
156: tv.tv_usec = (d - (double)tv.tv_sec) * 1000000U;
157: evtimer_add(&cdata->timer, &tv);
158: } else
1.70 nicm 159: event_active(&cdata->timer, EV_TIMEOUT, 1);
1.2 nicm 160:
1.70 nicm 161: if (!wait)
1.18 nicm 162: return (CMD_RETURN_NORMAL);
163: return (CMD_RETURN_WAIT);
1.2 nicm 164: }
1.1 nicm 165:
1.38 nicm 166: static void
1.60 nicm 167: cmd_run_shell_timer(__unused int fd, __unused short events, void* arg)
168: {
169: struct cmd_run_shell_data *cdata = arg;
1.70 nicm 170: struct client *c = cdata->client;
171: const char *cmd = cdata->cmd;
172: char *error;
173: struct cmdq_item *item = cdata->item;
174: enum cmd_parse_status status;
1.60 nicm 175:
1.70 nicm 176: if (cmd != NULL && cdata->shell) {
1.71 ! nicm 177: if (job_run(cmd, 0, NULL, cdata->s, cdata->cwd, NULL,
1.69 nicm 178: cmd_run_shell_callback, cmd_run_shell_free, cdata,
179: cdata->flags, -1, -1) == NULL)
1.60 nicm 180: cmd_run_shell_free(cdata);
1.70 nicm 181: return;
182: }
183:
184: if (cmd != NULL) {
185: if (item != NULL) {
186: status = cmd_parse_and_insert(cmd, &cdata->pi, item,
187: cmdq_get_state(item), &error);
188: } else {
189: status = cmd_parse_and_append(cmd, &cdata->pi, c, NULL,
190: &error);
191: }
192: if (status == CMD_PARSE_ERROR) {
193: cmdq_error(cdata->item, "%s", error);
194: free(error);
195: }
1.60 nicm 196: }
1.70 nicm 197:
198: if (cdata->item != NULL)
199: cmdq_continue(cdata->item);
200: cmd_run_shell_free(cdata);
1.60 nicm 201: }
202:
203: static void
1.2 nicm 204: cmd_run_shell_callback(struct job *job)
205: {
1.54 nicm 206: struct cmd_run_shell_data *cdata = job_get_data(job);
207: struct bufferevent *event = job_get_event(job);
1.63 nicm 208: struct cmdq_item *item = cdata->item;
1.54 nicm 209: char *cmd = cdata->cmd, *msg = NULL, *line;
1.5 nicm 210: size_t size;
1.54 nicm 211: int retcode, status;
1.7 nicm 212:
1.5 nicm 213: do {
1.54 nicm 214: if ((line = evbuffer_readline(event->input)) != NULL) {
1.18 nicm 215: cmd_run_shell_print(job, line);
1.16 nicm 216: free(line);
1.5 nicm 217: }
218: } while (line != NULL);
219:
1.54 nicm 220: size = EVBUFFER_LENGTH(event->input);
1.5 nicm 221: if (size != 0) {
222: line = xmalloc(size + 1);
1.54 nicm 223: memcpy(line, EVBUFFER_DATA(event->input), size);
1.5 nicm 224: line[size] = '\0';
1.2 nicm 225:
1.14 nicm 226: cmd_run_shell_print(job, line);
1.2 nicm 227:
1.12 nicm 228: free(line);
1.1 nicm 229: }
230:
1.54 nicm 231: status = job_get_status(job);
232: if (WIFEXITED(status)) {
233: if ((retcode = WEXITSTATUS(status)) != 0)
1.2 nicm 234: xasprintf(&msg, "'%s' returned %d", cmd, retcode);
1.54 nicm 235: } else if (WIFSIGNALED(status)) {
236: retcode = WTERMSIG(status);
1.2 nicm 237: xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.63 nicm 238: retcode += 128;
1.68 nicm 239: } else
240: retcode = 0;
1.25 nicm 241: if (msg != NULL)
242: cmd_run_shell_print(job, msg);
243: free(msg);
1.40 nicm 244:
1.63 nicm 245: if (item != NULL) {
1.66 nicm 246: if (cmdq_get_client(item) != NULL &&
247: cmdq_get_client(item)->session == NULL)
248: cmdq_get_client(item)->retval = retcode;
1.63 nicm 249: cmdq_continue(item);
250: }
1.2 nicm 251: }
252:
1.38 nicm 253: static void
1.2 nicm 254: cmd_run_shell_free(void *data)
255: {
256: struct cmd_run_shell_data *cdata = data;
257:
1.60 nicm 258: evtimer_del(&cdata->timer);
1.61 nicm 259: if (cdata->s != NULL)
260: session_remove_ref(cdata->s, __func__);
1.70 nicm 261: if (cdata->client != NULL)
262: server_client_unref(cdata->client);
1.60 nicm 263: free(cdata->cwd);
1.12 nicm 264: free(cdata->cmd);
265: free(cdata);
1.1 nicm 266: }
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