Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.86
1.86 ! nicm 1: /* $OpenBSD: cmd-run-shell.c,v 1.85 2023/08/23 08:40:25 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:
1.85 nicm 47: .args = { "bd:Ct:c:", 0, 2, cmd_run_shell_args_parse },
48: .usage = "[-bC] [-c start-directory] [-d delay] " CMD_TARGET_PANE_USAGE
49: " [shell-command]",
1.34 nicm 50:
1.49 nicm 51: .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
1.35 nicm 52:
53: .flags = 0,
1.34 nicm 54: .exec = cmd_run_shell_exec
1.1 nicm 55: };
56:
1.2 nicm 57: struct cmd_run_shell_data {
1.80 nicm 58: struct client *client;
59: char *cmd;
60: struct args_command_state *state;
61: char *cwd;
62: struct cmdq_item *item;
63: struct session *s;
64: int wp_id;
65: struct event timer;
66: int flags;
1.2 nicm 67: };
1.78 nicm 68:
69: static enum args_parse_type
70: cmd_run_shell_args_parse(struct args *args, __unused u_int idx,
71: __unused char **cause)
72: {
73: if (args_has(args, 'C'))
74: return (ARGS_PARSE_COMMANDS_OR_STRING);
75: return (ARGS_PARSE_STRING);
76: }
1.2 nicm 77:
1.38 nicm 78: static void
1.14 nicm 79: cmd_run_shell_print(struct job *job, const char *msg)
80: {
1.54 nicm 81: struct cmd_run_shell_data *cdata = job_get_data(job);
1.21 nicm 82: struct window_pane *wp = NULL;
1.43 nicm 83: struct cmd_find_state fs;
1.58 nicm 84: struct window_mode_entry *wme;
1.14 nicm 85:
1.21 nicm 86: if (cdata->wp_id != -1)
87: wp = window_pane_find_by_id(cdata->wp_id);
1.86 ! nicm 88: if (wp == NULL) {
! 89: if (cdata->item != NULL) {
! 90: cmdq_print(cdata->item, "%s", msg);
! 91: return;
! 92: }
! 93: if (cdata->item != NULL && cdata->client != NULL)
! 94: wp = server_client_get_pane(cdata->client);
! 95: if (wp == NULL && cmd_find_from_nothing(&fs, 0) == 0)
! 96: wp = fs.wp;
! 97: if (wp == NULL)
! 98: return;
! 99: }
1.14 nicm 100:
1.58 nicm 101: wme = TAILQ_FIRST(&wp->modes);
102: if (wme == NULL || wme->mode != &window_view_mode)
1.64 nicm 103: window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
1.83 nicm 104: window_copy_add(wp, 1, "%s", msg);
1.14 nicm 105: }
106:
1.38 nicm 107: static enum cmd_retval
1.41 nicm 108: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 109: {
1.65 nicm 110: struct args *args = cmd_get_args(self);
1.66 nicm 111: struct cmd_find_state *target = cmdq_get_target(item);
1.2 nicm 112: struct cmd_run_shell_data *cdata;
1.85 nicm 113: struct client *c = cmdq_get_client(item);
1.70 nicm 114: struct client *tc = cmdq_get_target_client(item);
1.66 nicm 115: struct session *s = target->s;
116: struct window_pane *wp = target->wp;
1.77 nicm 117: const char *delay, *cmd;
1.60 nicm 118: double d;
119: struct timeval tv;
120: char *end;
1.70 nicm 121: int wait = !args_has(args, 'b');
122:
123: if ((delay = args_get(args, 'd')) != NULL) {
124: d = strtod(delay, &end);
125: if (*end != '\0') {
126: cmdq_error(item, "invalid delay time: %s", delay);
127: return (CMD_RETURN_ERROR);
128: }
1.75 nicm 129: } else if (args_count(args) == 0)
1.70 nicm 130: return (CMD_RETURN_NORMAL);
1.40 nicm 131:
1.37 nicm 132: cdata = xcalloc(1, sizeof *cdata);
1.77 nicm 133: if (!args_has(args, 'C')) {
134: cmd = args_string(args, 0);
135: if (cmd != NULL)
136: cdata->cmd = format_single_from_target(item, cmd);
137: } else {
1.80 nicm 138: cdata->state = args_make_commands_prepare(self, item, 0, NULL,
139: wait, 1);
1.70 nicm 140: }
141:
1.40 nicm 142: if (args_has(args, 't') && wp != NULL)
143: cdata->wp_id = wp->id;
144: else
145: cdata->wp_id = -1;
146:
1.70 nicm 147: if (wait) {
1.85 nicm 148: cdata->client = c;
1.41 nicm 149: cdata->item = item;
1.70 nicm 150: } else {
151: cdata->client = tc;
1.69 nicm 152: cdata->flags |= JOB_NOWAIT;
1.70 nicm 153: }
154: if (cdata->client != NULL)
155: cdata->client->references++;
1.85 nicm 156: if (args_has(args, 'c'))
157: cdata->cwd = xstrdup(args_get(args, 'c'));
158: else
159: cdata->cwd = xstrdup(server_client_get_cwd(c, s));
1.70 nicm 160:
1.60 nicm 161: cdata->s = s;
1.61 nicm 162: if (s != NULL)
163: session_add_ref(s, __func__);
1.60 nicm 164:
165: evtimer_set(&cdata->timer, cmd_run_shell_timer, cdata);
1.70 nicm 166: if (delay != NULL) {
1.60 nicm 167: timerclear(&tv);
168: tv.tv_sec = (time_t)d;
169: tv.tv_usec = (d - (double)tv.tv_sec) * 1000000U;
170: evtimer_add(&cdata->timer, &tv);
171: } else
1.70 nicm 172: event_active(&cdata->timer, EV_TIMEOUT, 1);
1.2 nicm 173:
1.70 nicm 174: if (!wait)
1.18 nicm 175: return (CMD_RETURN_NORMAL);
176: return (CMD_RETURN_WAIT);
1.2 nicm 177: }
1.1 nicm 178:
1.38 nicm 179: static void
1.60 nicm 180: cmd_run_shell_timer(__unused int fd, __unused short events, void* arg)
181: {
182: struct cmd_run_shell_data *cdata = arg;
1.70 nicm 183: struct client *c = cdata->client;
184: const char *cmd = cdata->cmd;
1.77 nicm 185: struct cmdq_item *item = cdata->item, *new_item;
1.80 nicm 186: struct cmd_list *cmdlist;
187: char *error;
1.60 nicm 188:
1.81 nicm 189: if (cdata->state == NULL) {
190: if (cmd == NULL) {
191: if (cdata->item != NULL)
192: cmdq_continue(cdata->item);
193: cmd_run_shell_free(cdata);
194: return;
195: }
1.82 nicm 196: if (job_run(cmd, 0, NULL, NULL, cdata->s, cdata->cwd, NULL,
1.69 nicm 197: cmd_run_shell_callback, cmd_run_shell_free, cdata,
198: cdata->flags, -1, -1) == NULL)
1.60 nicm 199: cmd_run_shell_free(cdata);
1.70 nicm 200: return;
201: }
202:
1.80 nicm 203: cmdlist = args_make_commands(cdata->state, 0, NULL, &error);
204: if (cmdlist == NULL) {
205: if (cdata->item == NULL) {
206: *error = toupper((u_char)*error);
207: status_message_set(c, -1, 1, 0, "%s", error);
208: } else
209: cmdq_error(cdata->item, "%s", error);
210: free(error);
211: } else if (item == NULL) {
212: new_item = cmdq_get_command(cmdlist, NULL);
213: cmdq_append(c, new_item);
214: } else {
215: new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
216: cmdq_insert_after(item, new_item);
1.60 nicm 217: }
1.70 nicm 218:
219: if (cdata->item != NULL)
220: cmdq_continue(cdata->item);
221: cmd_run_shell_free(cdata);
1.60 nicm 222: }
223:
224: static void
1.2 nicm 225: cmd_run_shell_callback(struct job *job)
226: {
1.54 nicm 227: struct cmd_run_shell_data *cdata = job_get_data(job);
228: struct bufferevent *event = job_get_event(job);
1.63 nicm 229: struct cmdq_item *item = cdata->item;
1.54 nicm 230: char *cmd = cdata->cmd, *msg = NULL, *line;
1.5 nicm 231: size_t size;
1.54 nicm 232: int retcode, status;
1.7 nicm 233:
1.5 nicm 234: do {
1.83 nicm 235: line = evbuffer_readln(event->input, NULL, EVBUFFER_EOL_LF);
236: if (line != NULL) {
1.18 nicm 237: cmd_run_shell_print(job, line);
1.16 nicm 238: free(line);
1.5 nicm 239: }
240: } while (line != NULL);
241:
1.54 nicm 242: size = EVBUFFER_LENGTH(event->input);
1.5 nicm 243: if (size != 0) {
244: line = xmalloc(size + 1);
1.54 nicm 245: memcpy(line, EVBUFFER_DATA(event->input), size);
1.5 nicm 246: line[size] = '\0';
1.2 nicm 247:
1.14 nicm 248: cmd_run_shell_print(job, line);
1.2 nicm 249:
1.12 nicm 250: free(line);
1.1 nicm 251: }
252:
1.54 nicm 253: status = job_get_status(job);
254: if (WIFEXITED(status)) {
255: if ((retcode = WEXITSTATUS(status)) != 0)
1.2 nicm 256: xasprintf(&msg, "'%s' returned %d", cmd, retcode);
1.54 nicm 257: } else if (WIFSIGNALED(status)) {
258: retcode = WTERMSIG(status);
1.2 nicm 259: xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.63 nicm 260: retcode += 128;
1.68 nicm 261: } else
262: retcode = 0;
1.25 nicm 263: if (msg != NULL)
264: cmd_run_shell_print(job, msg);
265: free(msg);
1.40 nicm 266:
1.63 nicm 267: if (item != NULL) {
1.66 nicm 268: if (cmdq_get_client(item) != NULL &&
269: cmdq_get_client(item)->session == NULL)
270: cmdq_get_client(item)->retval = retcode;
1.63 nicm 271: cmdq_continue(item);
272: }
1.2 nicm 273: }
274:
1.38 nicm 275: static void
1.2 nicm 276: cmd_run_shell_free(void *data)
277: {
278: struct cmd_run_shell_data *cdata = data;
279:
1.60 nicm 280: evtimer_del(&cdata->timer);
1.61 nicm 281: if (cdata->s != NULL)
282: session_remove_ref(cdata->s, __func__);
1.70 nicm 283: if (cdata->client != NULL)
284: server_client_unref(cdata->client);
1.80 nicm 285: if (cdata->state != NULL)
286: args_make_commands_free(cdata->state);
1.60 nicm 287: free(cdata->cwd);
1.12 nicm 288: free(cdata->cmd);
289: free(cdata);
1.1 nicm 290: }
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