Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.78
1.78 ! nicm 1: /* $OpenBSD: cmd-run-shell.c,v 1.77 2021/08/23 12:33:55 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 {
1.70 nicm 57: struct client *client;
1.41 nicm 58: char *cmd;
1.77 nicm 59: struct cmd_list *cmdlist;
1.60 nicm 60: char *cwd;
1.41 nicm 61: struct cmdq_item *item;
1.60 nicm 62: struct session *s;
1.41 nicm 63: int wp_id;
1.60 nicm 64: struct event timer;
1.69 nicm 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 {
135: cdata->cmdlist = args_make_commands_now(self, item, 0);
136: if (cdata->cmdlist == NULL)
137: return (CMD_RETURN_ERROR);
1.70 nicm 138: }
139:
1.40 nicm 140: if (args_has(args, 't') && wp != NULL)
141: cdata->wp_id = wp->id;
142: else
143: cdata->wp_id = -1;
144:
1.70 nicm 145: if (wait) {
146: cdata->client = cmdq_get_client(item);
1.41 nicm 147: cdata->item = item;
1.70 nicm 148: } else {
149: cdata->client = tc;
1.69 nicm 150: cdata->flags |= JOB_NOWAIT;
1.70 nicm 151: }
152: if (cdata->client != NULL)
153: cdata->client->references++;
1.2 nicm 154:
1.66 nicm 155: cdata->cwd = xstrdup(server_client_get_cwd(cmdq_get_client(item), s));
1.70 nicm 156:
1.60 nicm 157: cdata->s = s;
1.61 nicm 158: if (s != NULL)
159: session_add_ref(s, __func__);
1.60 nicm 160:
161: evtimer_set(&cdata->timer, cmd_run_shell_timer, cdata);
1.70 nicm 162: if (delay != NULL) {
1.60 nicm 163: timerclear(&tv);
164: tv.tv_sec = (time_t)d;
165: tv.tv_usec = (d - (double)tv.tv_sec) * 1000000U;
166: evtimer_add(&cdata->timer, &tv);
167: } else
1.70 nicm 168: event_active(&cdata->timer, EV_TIMEOUT, 1);
1.2 nicm 169:
1.70 nicm 170: if (!wait)
1.18 nicm 171: return (CMD_RETURN_NORMAL);
172: return (CMD_RETURN_WAIT);
1.2 nicm 173: }
1.1 nicm 174:
1.38 nicm 175: static void
1.60 nicm 176: cmd_run_shell_timer(__unused int fd, __unused short events, void* arg)
177: {
178: struct cmd_run_shell_data *cdata = arg;
1.70 nicm 179: struct client *c = cdata->client;
180: const char *cmd = cdata->cmd;
1.77 nicm 181: struct cmdq_item *item = cdata->item, *new_item;
1.60 nicm 182:
1.77 nicm 183: if (cdata->cmdlist == NULL && cmd != NULL) {
1.71 nicm 184: if (job_run(cmd, 0, NULL, cdata->s, cdata->cwd, NULL,
1.69 nicm 185: cmd_run_shell_callback, cmd_run_shell_free, cdata,
186: cdata->flags, -1, -1) == NULL)
1.60 nicm 187: cmd_run_shell_free(cdata);
1.70 nicm 188: return;
189: }
190:
1.77 nicm 191: if (cdata->cmdlist != NULL) {
192: if (item == NULL) {
193: new_item = cmdq_get_command(cdata->cmdlist, NULL);
194: cmdq_append(c, new_item);
1.70 nicm 195: } else {
1.77 nicm 196: new_item = cmdq_get_command(cdata->cmdlist,
197: cmdq_get_state(item));
198: cmdq_insert_after(item, new_item);
1.70 nicm 199: }
1.60 nicm 200: }
1.70 nicm 201:
202: if (cdata->item != NULL)
203: cmdq_continue(cdata->item);
204: cmd_run_shell_free(cdata);
1.60 nicm 205: }
206:
207: static void
1.2 nicm 208: cmd_run_shell_callback(struct job *job)
209: {
1.54 nicm 210: struct cmd_run_shell_data *cdata = job_get_data(job);
211: struct bufferevent *event = job_get_event(job);
1.63 nicm 212: struct cmdq_item *item = cdata->item;
1.54 nicm 213: char *cmd = cdata->cmd, *msg = NULL, *line;
1.5 nicm 214: size_t size;
1.54 nicm 215: int retcode, status;
1.7 nicm 216:
1.5 nicm 217: do {
1.54 nicm 218: if ((line = evbuffer_readline(event->input)) != NULL) {
1.18 nicm 219: cmd_run_shell_print(job, line);
1.16 nicm 220: free(line);
1.5 nicm 221: }
222: } while (line != NULL);
223:
1.54 nicm 224: size = EVBUFFER_LENGTH(event->input);
1.5 nicm 225: if (size != 0) {
226: line = xmalloc(size + 1);
1.54 nicm 227: memcpy(line, EVBUFFER_DATA(event->input), size);
1.5 nicm 228: line[size] = '\0';
1.2 nicm 229:
1.14 nicm 230: cmd_run_shell_print(job, line);
1.2 nicm 231:
1.12 nicm 232: free(line);
1.1 nicm 233: }
234:
1.54 nicm 235: status = job_get_status(job);
236: if (WIFEXITED(status)) {
237: if ((retcode = WEXITSTATUS(status)) != 0)
1.2 nicm 238: xasprintf(&msg, "'%s' returned %d", cmd, retcode);
1.54 nicm 239: } else if (WIFSIGNALED(status)) {
240: retcode = WTERMSIG(status);
1.2 nicm 241: xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.63 nicm 242: retcode += 128;
1.68 nicm 243: } else
244: retcode = 0;
1.25 nicm 245: if (msg != NULL)
246: cmd_run_shell_print(job, msg);
247: free(msg);
1.40 nicm 248:
1.63 nicm 249: if (item != NULL) {
1.66 nicm 250: if (cmdq_get_client(item) != NULL &&
251: cmdq_get_client(item)->session == NULL)
252: cmdq_get_client(item)->retval = retcode;
1.63 nicm 253: cmdq_continue(item);
254: }
1.2 nicm 255: }
256:
1.38 nicm 257: static void
1.2 nicm 258: cmd_run_shell_free(void *data)
259: {
260: struct cmd_run_shell_data *cdata = data;
261:
1.60 nicm 262: evtimer_del(&cdata->timer);
1.61 nicm 263: if (cdata->s != NULL)
264: session_remove_ref(cdata->s, __func__);
1.70 nicm 265: if (cdata->client != NULL)
266: server_client_unref(cdata->client);
1.77 nicm 267: if (cdata->cmdlist != NULL)
268: cmd_list_free(cdata->cmdlist);
1.60 nicm 269: free(cdata->cwd);
1.12 nicm 270: free(cdata->cmd);
271: free(cdata);
1.1 nicm 272: }
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