Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.84
1.84 ! nicm 1: /* $OpenBSD: cmd-run-shell.c,v 1.83 2022/05/30 13:00:18 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);
1.84 ! nicm 87: if (wp == NULL && cdata->item != NULL && cdata->client != NULL)
1.83 nicm 88: wp = server_client_get_pane(cdata->client);
89: if (wp == NULL && cmd_find_from_nothing(&fs, 0) == 0)
1.43 nicm 90: wp = fs.wp;
1.83 nicm 91: if (wp == NULL)
92: return;
1.14 nicm 93:
1.58 nicm 94: wme = TAILQ_FIRST(&wp->modes);
95: if (wme == NULL || wme->mode != &window_view_mode)
1.64 nicm 96: window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
1.83 nicm 97: window_copy_add(wp, 1, "%s", msg);
1.14 nicm 98: }
99:
1.38 nicm 100: static enum cmd_retval
1.41 nicm 101: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 102: {
1.65 nicm 103: struct args *args = cmd_get_args(self);
1.66 nicm 104: struct cmd_find_state *target = cmdq_get_target(item);
1.2 nicm 105: struct cmd_run_shell_data *cdata;
1.70 nicm 106: struct client *tc = cmdq_get_target_client(item);
1.66 nicm 107: struct session *s = target->s;
108: struct window_pane *wp = target->wp;
1.77 nicm 109: const char *delay, *cmd;
1.60 nicm 110: double d;
111: struct timeval tv;
112: char *end;
1.70 nicm 113: int wait = !args_has(args, 'b');
114:
115: if ((delay = args_get(args, 'd')) != NULL) {
116: d = strtod(delay, &end);
117: if (*end != '\0') {
118: cmdq_error(item, "invalid delay time: %s", delay);
119: return (CMD_RETURN_ERROR);
120: }
1.75 nicm 121: } else if (args_count(args) == 0)
1.70 nicm 122: return (CMD_RETURN_NORMAL);
1.40 nicm 123:
1.37 nicm 124: cdata = xcalloc(1, sizeof *cdata);
1.77 nicm 125: if (!args_has(args, 'C')) {
126: cmd = args_string(args, 0);
127: if (cmd != NULL)
128: cdata->cmd = format_single_from_target(item, cmd);
129: } else {
1.80 nicm 130: cdata->state = args_make_commands_prepare(self, item, 0, NULL,
131: wait, 1);
1.70 nicm 132: }
133:
1.40 nicm 134: if (args_has(args, 't') && wp != NULL)
135: cdata->wp_id = wp->id;
136: else
137: cdata->wp_id = -1;
138:
1.70 nicm 139: if (wait) {
140: cdata->client = cmdq_get_client(item);
1.41 nicm 141: cdata->item = item;
1.70 nicm 142: } else {
143: cdata->client = tc;
1.69 nicm 144: cdata->flags |= JOB_NOWAIT;
1.70 nicm 145: }
146: if (cdata->client != NULL)
147: cdata->client->references++;
1.2 nicm 148:
1.66 nicm 149: cdata->cwd = xstrdup(server_client_get_cwd(cmdq_get_client(item), s));
1.70 nicm 150:
1.60 nicm 151: cdata->s = s;
1.61 nicm 152: if (s != NULL)
153: session_add_ref(s, __func__);
1.60 nicm 154:
155: evtimer_set(&cdata->timer, cmd_run_shell_timer, cdata);
1.70 nicm 156: if (delay != NULL) {
1.60 nicm 157: timerclear(&tv);
158: tv.tv_sec = (time_t)d;
159: tv.tv_usec = (d - (double)tv.tv_sec) * 1000000U;
160: evtimer_add(&cdata->timer, &tv);
161: } else
1.70 nicm 162: event_active(&cdata->timer, EV_TIMEOUT, 1);
1.2 nicm 163:
1.70 nicm 164: if (!wait)
1.18 nicm 165: return (CMD_RETURN_NORMAL);
166: return (CMD_RETURN_WAIT);
1.2 nicm 167: }
1.1 nicm 168:
1.38 nicm 169: static void
1.60 nicm 170: cmd_run_shell_timer(__unused int fd, __unused short events, void* arg)
171: {
172: struct cmd_run_shell_data *cdata = arg;
1.70 nicm 173: struct client *c = cdata->client;
174: const char *cmd = cdata->cmd;
1.77 nicm 175: struct cmdq_item *item = cdata->item, *new_item;
1.80 nicm 176: struct cmd_list *cmdlist;
177: char *error;
1.60 nicm 178:
1.81 nicm 179: if (cdata->state == NULL) {
180: if (cmd == NULL) {
181: if (cdata->item != NULL)
182: cmdq_continue(cdata->item);
183: cmd_run_shell_free(cdata);
184: return;
185: }
1.82 nicm 186: if (job_run(cmd, 0, NULL, NULL, cdata->s, cdata->cwd, NULL,
1.69 nicm 187: cmd_run_shell_callback, cmd_run_shell_free, cdata,
188: cdata->flags, -1, -1) == NULL)
1.60 nicm 189: cmd_run_shell_free(cdata);
1.70 nicm 190: return;
191: }
192:
1.80 nicm 193: cmdlist = args_make_commands(cdata->state, 0, NULL, &error);
194: if (cmdlist == NULL) {
195: if (cdata->item == NULL) {
196: *error = toupper((u_char)*error);
197: status_message_set(c, -1, 1, 0, "%s", error);
198: } else
199: cmdq_error(cdata->item, "%s", error);
200: free(error);
201: } else if (item == NULL) {
202: new_item = cmdq_get_command(cmdlist, NULL);
203: cmdq_append(c, new_item);
204: } else {
205: new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
206: cmdq_insert_after(item, new_item);
1.60 nicm 207: }
1.70 nicm 208:
209: if (cdata->item != NULL)
210: cmdq_continue(cdata->item);
211: cmd_run_shell_free(cdata);
1.60 nicm 212: }
213:
214: static void
1.2 nicm 215: cmd_run_shell_callback(struct job *job)
216: {
1.54 nicm 217: struct cmd_run_shell_data *cdata = job_get_data(job);
218: struct bufferevent *event = job_get_event(job);
1.63 nicm 219: struct cmdq_item *item = cdata->item;
1.54 nicm 220: char *cmd = cdata->cmd, *msg = NULL, *line;
1.5 nicm 221: size_t size;
1.54 nicm 222: int retcode, status;
1.7 nicm 223:
1.5 nicm 224: do {
1.83 nicm 225: line = evbuffer_readln(event->input, NULL, EVBUFFER_EOL_LF);
226: if (line != NULL) {
1.18 nicm 227: cmd_run_shell_print(job, line);
1.16 nicm 228: free(line);
1.5 nicm 229: }
230: } while (line != NULL);
231:
1.54 nicm 232: size = EVBUFFER_LENGTH(event->input);
1.5 nicm 233: if (size != 0) {
234: line = xmalloc(size + 1);
1.54 nicm 235: memcpy(line, EVBUFFER_DATA(event->input), size);
1.5 nicm 236: line[size] = '\0';
1.2 nicm 237:
1.14 nicm 238: cmd_run_shell_print(job, line);
1.2 nicm 239:
1.12 nicm 240: free(line);
1.1 nicm 241: }
242:
1.54 nicm 243: status = job_get_status(job);
244: if (WIFEXITED(status)) {
245: if ((retcode = WEXITSTATUS(status)) != 0)
1.2 nicm 246: xasprintf(&msg, "'%s' returned %d", cmd, retcode);
1.54 nicm 247: } else if (WIFSIGNALED(status)) {
248: retcode = WTERMSIG(status);
1.2 nicm 249: xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.63 nicm 250: retcode += 128;
1.68 nicm 251: } else
252: retcode = 0;
1.25 nicm 253: if (msg != NULL)
254: cmd_run_shell_print(job, msg);
255: free(msg);
1.40 nicm 256:
1.63 nicm 257: if (item != NULL) {
1.66 nicm 258: if (cmdq_get_client(item) != NULL &&
259: cmdq_get_client(item)->session == NULL)
260: cmdq_get_client(item)->retval = retcode;
1.63 nicm 261: cmdq_continue(item);
262: }
1.2 nicm 263: }
264:
1.38 nicm 265: static void
1.2 nicm 266: cmd_run_shell_free(void *data)
267: {
268: struct cmd_run_shell_data *cdata = data;
269:
1.60 nicm 270: evtimer_del(&cdata->timer);
1.61 nicm 271: if (cdata->s != NULL)
272: session_remove_ref(cdata->s, __func__);
1.70 nicm 273: if (cdata->client != NULL)
274: server_client_unref(cdata->client);
1.80 nicm 275: if (cdata->state != NULL)
276: args_make_commands_free(cdata->state);
1.60 nicm 277: free(cdata->cwd);
1.12 nicm 278: free(cdata->cmd);
279: free(cdata);
1.1 nicm 280: }
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