Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.82
1.82 ! nicm 1: /* $OpenBSD: cmd-run-shell.c,v 1.81 2021/09/16 06:39:22 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:
1.72 nicm 23: #include <ctype.h>
1.12 nicm 24: #include <stdlib.h>
1.1 nicm 25: #include <string.h>
26:
27: #include "tmux.h"
28:
29: /*
30: * Runs a command without a window.
31: */
32:
1.78 nicm 33: static enum args_parse_type cmd_run_shell_args_parse(struct args *, u_int,
34: char **);
35: static enum cmd_retval cmd_run_shell_exec(struct cmd *,
36: struct cmdq_item *);
1.14 nicm 37:
1.60 nicm 38: static void cmd_run_shell_timer(int, short, void *);
1.38 nicm 39: static void cmd_run_shell_callback(struct job *);
40: static void cmd_run_shell_free(void *);
41: static void cmd_run_shell_print(struct job *, const char *);
1.2 nicm 42:
1.1 nicm 43: const struct cmd_entry cmd_run_shell_entry = {
1.34 nicm 44: .name = "run-shell",
45: .alias = "run",
46:
1.78 nicm 47: .args = { "bd:Ct:", 0, 1, cmd_run_shell_args_parse },
1.70 nicm 48: .usage = "[-bC] [-d delay] " CMD_TARGET_PANE_USAGE " [shell-command]",
1.34 nicm 49:
1.49 nicm 50: .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
1.35 nicm 51:
52: .flags = 0,
1.34 nicm 53: .exec = cmd_run_shell_exec
1.1 nicm 54: };
55:
1.2 nicm 56: struct cmd_run_shell_data {
1.80 nicm 57: struct client *client;
58: char *cmd;
59: struct args_command_state *state;
60: char *cwd;
61: struct cmdq_item *item;
62: struct session *s;
63: int wp_id;
64: struct event timer;
65: int flags;
1.2 nicm 66: };
1.78 nicm 67:
68: static enum args_parse_type
69: cmd_run_shell_args_parse(struct args *args, __unused u_int idx,
70: __unused char **cause)
71: {
72: if (args_has(args, 'C'))
73: return (ARGS_PARSE_COMMANDS_OR_STRING);
74: return (ARGS_PARSE_STRING);
75: }
1.2 nicm 76:
1.38 nicm 77: static void
1.14 nicm 78: cmd_run_shell_print(struct job *job, const char *msg)
79: {
1.54 nicm 80: struct cmd_run_shell_data *cdata = job_get_data(job);
1.21 nicm 81: struct window_pane *wp = NULL;
1.43 nicm 82: struct cmd_find_state fs;
1.58 nicm 83: struct window_mode_entry *wme;
1.14 nicm 84:
1.21 nicm 85: if (cdata->wp_id != -1)
86: wp = window_pane_find_by_id(cdata->wp_id);
1.43 nicm 87: if (wp == NULL) {
88: if (cdata->item != NULL) {
89: cmdq_print(cdata->item, "%s", msg);
90: return;
91: }
1.51 nicm 92: if (cmd_find_from_nothing(&fs, 0) != 0)
1.43 nicm 93: return;
94: wp = fs.wp;
95: if (wp == NULL)
96: return;
1.14 nicm 97: }
98:
1.58 nicm 99: wme = TAILQ_FIRST(&wp->modes);
100: if (wme == NULL || wme->mode != &window_view_mode)
1.64 nicm 101: window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
1.56 nicm 102: window_copy_add(wp, "%s", msg);
1.14 nicm 103: }
104:
1.38 nicm 105: static enum cmd_retval
1.41 nicm 106: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 107: {
1.65 nicm 108: struct args *args = cmd_get_args(self);
1.66 nicm 109: struct cmd_find_state *target = cmdq_get_target(item);
1.2 nicm 110: struct cmd_run_shell_data *cdata;
1.70 nicm 111: struct client *tc = cmdq_get_target_client(item);
1.66 nicm 112: struct session *s = target->s;
113: struct window_pane *wp = target->wp;
1.77 nicm 114: const char *delay, *cmd;
1.60 nicm 115: double d;
116: struct timeval tv;
117: char *end;
1.70 nicm 118: int wait = !args_has(args, 'b');
119:
120: if ((delay = args_get(args, 'd')) != NULL) {
121: d = strtod(delay, &end);
122: if (*end != '\0') {
123: cmdq_error(item, "invalid delay time: %s", delay);
124: return (CMD_RETURN_ERROR);
125: }
1.75 nicm 126: } else if (args_count(args) == 0)
1.70 nicm 127: return (CMD_RETURN_NORMAL);
1.40 nicm 128:
1.37 nicm 129: cdata = xcalloc(1, sizeof *cdata);
1.77 nicm 130: if (!args_has(args, 'C')) {
131: cmd = args_string(args, 0);
132: if (cmd != NULL)
133: cdata->cmd = format_single_from_target(item, cmd);
134: } else {
1.80 nicm 135: cdata->state = args_make_commands_prepare(self, item, 0, NULL,
136: wait, 1);
1.70 nicm 137: }
138:
1.40 nicm 139: if (args_has(args, 't') && wp != NULL)
140: cdata->wp_id = wp->id;
141: else
142: cdata->wp_id = -1;
143:
1.70 nicm 144: if (wait) {
145: cdata->client = cmdq_get_client(item);
1.41 nicm 146: cdata->item = item;
1.70 nicm 147: } else {
148: cdata->client = tc;
1.69 nicm 149: cdata->flags |= JOB_NOWAIT;
1.70 nicm 150: }
151: if (cdata->client != NULL)
152: cdata->client->references++;
1.2 nicm 153:
1.66 nicm 154: cdata->cwd = xstrdup(server_client_get_cwd(cmdq_get_client(item), s));
1.70 nicm 155:
1.60 nicm 156: cdata->s = s;
1.61 nicm 157: if (s != NULL)
158: session_add_ref(s, __func__);
1.60 nicm 159:
160: evtimer_set(&cdata->timer, cmd_run_shell_timer, cdata);
1.70 nicm 161: if (delay != NULL) {
1.60 nicm 162: timerclear(&tv);
163: tv.tv_sec = (time_t)d;
164: tv.tv_usec = (d - (double)tv.tv_sec) * 1000000U;
165: evtimer_add(&cdata->timer, &tv);
166: } else
1.70 nicm 167: event_active(&cdata->timer, EV_TIMEOUT, 1);
1.2 nicm 168:
1.70 nicm 169: if (!wait)
1.18 nicm 170: return (CMD_RETURN_NORMAL);
171: return (CMD_RETURN_WAIT);
1.2 nicm 172: }
1.1 nicm 173:
1.38 nicm 174: static void
1.60 nicm 175: cmd_run_shell_timer(__unused int fd, __unused short events, void* arg)
176: {
177: struct cmd_run_shell_data *cdata = arg;
1.70 nicm 178: struct client *c = cdata->client;
179: const char *cmd = cdata->cmd;
1.77 nicm 180: struct cmdq_item *item = cdata->item, *new_item;
1.80 nicm 181: struct cmd_list *cmdlist;
182: char *error;
1.60 nicm 183:
1.81 nicm 184: if (cdata->state == NULL) {
185: if (cmd == NULL) {
186: if (cdata->item != NULL)
187: cmdq_continue(cdata->item);
188: cmd_run_shell_free(cdata);
189: return;
190: }
1.82 ! nicm 191: if (job_run(cmd, 0, NULL, NULL, cdata->s, cdata->cwd, NULL,
1.69 nicm 192: cmd_run_shell_callback, cmd_run_shell_free, cdata,
193: cdata->flags, -1, -1) == NULL)
1.60 nicm 194: cmd_run_shell_free(cdata);
1.70 nicm 195: return;
196: }
197:
1.80 nicm 198: cmdlist = args_make_commands(cdata->state, 0, NULL, &error);
199: if (cmdlist == NULL) {
200: if (cdata->item == NULL) {
201: *error = toupper((u_char)*error);
202: status_message_set(c, -1, 1, 0, "%s", error);
203: } else
204: cmdq_error(cdata->item, "%s", error);
205: free(error);
206: } else if (item == NULL) {
207: new_item = cmdq_get_command(cmdlist, NULL);
208: cmdq_append(c, new_item);
209: } else {
210: new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
211: cmdq_insert_after(item, new_item);
1.60 nicm 212: }
1.70 nicm 213:
214: if (cdata->item != NULL)
215: cmdq_continue(cdata->item);
216: cmd_run_shell_free(cdata);
1.60 nicm 217: }
218:
219: static void
1.2 nicm 220: cmd_run_shell_callback(struct job *job)
221: {
1.54 nicm 222: struct cmd_run_shell_data *cdata = job_get_data(job);
223: struct bufferevent *event = job_get_event(job);
1.63 nicm 224: struct cmdq_item *item = cdata->item;
1.54 nicm 225: char *cmd = cdata->cmd, *msg = NULL, *line;
1.5 nicm 226: size_t size;
1.54 nicm 227: int retcode, status;
1.7 nicm 228:
1.5 nicm 229: do {
1.54 nicm 230: if ((line = evbuffer_readline(event->input)) != NULL) {
1.18 nicm 231: cmd_run_shell_print(job, line);
1.16 nicm 232: free(line);
1.5 nicm 233: }
234: } while (line != NULL);
235:
1.54 nicm 236: size = EVBUFFER_LENGTH(event->input);
1.5 nicm 237: if (size != 0) {
238: line = xmalloc(size + 1);
1.54 nicm 239: memcpy(line, EVBUFFER_DATA(event->input), size);
1.5 nicm 240: line[size] = '\0';
1.2 nicm 241:
1.14 nicm 242: cmd_run_shell_print(job, line);
1.2 nicm 243:
1.12 nicm 244: free(line);
1.1 nicm 245: }
246:
1.54 nicm 247: status = job_get_status(job);
248: if (WIFEXITED(status)) {
249: if ((retcode = WEXITSTATUS(status)) != 0)
1.2 nicm 250: xasprintf(&msg, "'%s' returned %d", cmd, retcode);
1.54 nicm 251: } else if (WIFSIGNALED(status)) {
252: retcode = WTERMSIG(status);
1.2 nicm 253: xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.63 nicm 254: retcode += 128;
1.68 nicm 255: } else
256: retcode = 0;
1.25 nicm 257: if (msg != NULL)
258: cmd_run_shell_print(job, msg);
259: free(msg);
1.40 nicm 260:
1.63 nicm 261: if (item != NULL) {
1.66 nicm 262: if (cmdq_get_client(item) != NULL &&
263: cmdq_get_client(item)->session == NULL)
264: cmdq_get_client(item)->retval = retcode;
1.63 nicm 265: cmdq_continue(item);
266: }
1.2 nicm 267: }
268:
1.38 nicm 269: static void
1.2 nicm 270: cmd_run_shell_free(void *data)
271: {
272: struct cmd_run_shell_data *cdata = data;
273:
1.60 nicm 274: evtimer_del(&cdata->timer);
1.61 nicm 275: if (cdata->s != NULL)
276: session_remove_ref(cdata->s, __func__);
1.70 nicm 277: if (cdata->client != NULL)
278: server_client_unref(cdata->client);
1.80 nicm 279: if (cdata->state != NULL)
280: args_make_commands_free(cdata->state);
1.60 nicm 281: free(cdata->cwd);
1.12 nicm 282: free(cdata->cmd);
283: free(cdata);
1.1 nicm 284: }
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