Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.67
1.67 ! nicm 1: /* $OpenBSD: cmd-run-shell.c,v 1.66 2020/04/13 10:59:58 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:
1.60 nicm 43: .args = { "bd:t:", 0, 1 },
44: .usage = "[-b] [-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 {
1.41 nicm 53: char *cmd;
1.60 nicm 54: char *cwd;
1.41 nicm 55: struct cmdq_item *item;
1.60 nicm 56: struct session *s;
1.41 nicm 57: int wp_id;
1.60 nicm 58: struct event timer;
1.2 nicm 59: };
60:
1.38 nicm 61: static void
1.14 nicm 62: cmd_run_shell_print(struct job *job, const char *msg)
63: {
1.54 nicm 64: struct cmd_run_shell_data *cdata = job_get_data(job);
1.21 nicm 65: struct window_pane *wp = NULL;
1.43 nicm 66: struct cmd_find_state fs;
1.58 nicm 67: struct window_mode_entry *wme;
1.14 nicm 68:
1.21 nicm 69: if (cdata->wp_id != -1)
70: wp = window_pane_find_by_id(cdata->wp_id);
1.43 nicm 71: if (wp == NULL) {
72: if (cdata->item != NULL) {
73: cmdq_print(cdata->item, "%s", msg);
74: return;
75: }
1.51 nicm 76: if (cmd_find_from_nothing(&fs, 0) != 0)
1.43 nicm 77: return;
78: wp = fs.wp;
79: if (wp == NULL)
80: return;
1.14 nicm 81: }
82:
1.58 nicm 83: wme = TAILQ_FIRST(&wp->modes);
84: if (wme == NULL || wme->mode != &window_view_mode)
1.64 nicm 85: window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
1.56 nicm 86: window_copy_add(wp, "%s", msg);
1.14 nicm 87: }
88:
1.38 nicm 89: static enum cmd_retval
1.41 nicm 90: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 91: {
1.65 nicm 92: struct args *args = cmd_get_args(self);
1.66 nicm 93: struct cmd_find_state *target = cmdq_get_target(item);
1.2 nicm 94: struct cmd_run_shell_data *cdata;
1.66 nicm 95: struct session *s = target->s;
96: struct window_pane *wp = target->wp;
1.60 nicm 97: const char *delay;
98: double d;
99: struct timeval tv;
100: char *end;
1.40 nicm 101:
1.37 nicm 102: cdata = xcalloc(1, sizeof *cdata);
1.60 nicm 103: if (args->argc != 0)
1.67 ! nicm 104: cdata->cmd = format_single_from_target(item, args->argv[0]);
1.2 nicm 105:
1.40 nicm 106: if (args_has(args, 't') && wp != NULL)
107: cdata->wp_id = wp->id;
108: else
109: cdata->wp_id = -1;
110:
111: if (!args_has(args, 'b'))
1.41 nicm 112: cdata->item = item;
1.2 nicm 113:
1.66 nicm 114: cdata->cwd = xstrdup(server_client_get_cwd(cmdq_get_client(item), s));
1.60 nicm 115: cdata->s = s;
1.61 nicm 116: if (s != NULL)
117: session_add_ref(s, __func__);
1.60 nicm 118:
119: evtimer_set(&cdata->timer, cmd_run_shell_timer, cdata);
120:
121: if ((delay = args_get(args, 'd')) != NULL) {
122: d = strtod(delay, &end);
123: if (*end != '\0') {
124: cmdq_error(item, "invalid delay time: %s", delay);
125: cmd_run_shell_free(cdata);
126: return (CMD_RETURN_ERROR);
127: }
128: timerclear(&tv);
129: tv.tv_sec = (time_t)d;
130: tv.tv_usec = (d - (double)tv.tv_sec) * 1000000U;
131: evtimer_add(&cdata->timer, &tv);
132: } else
133: cmd_run_shell_timer(-1, 0, cdata);
1.2 nicm 134:
1.40 nicm 135: if (args_has(args, 'b'))
1.18 nicm 136: return (CMD_RETURN_NORMAL);
137: return (CMD_RETURN_WAIT);
1.2 nicm 138: }
1.1 nicm 139:
1.38 nicm 140: static void
1.60 nicm 141: cmd_run_shell_timer(__unused int fd, __unused short events, void* arg)
142: {
143: struct cmd_run_shell_data *cdata = arg;
144:
145: if (cdata->cmd != NULL) {
146: if (job_run(cdata->cmd, cdata->s, cdata->cwd, NULL,
1.62 nicm 147: cmd_run_shell_callback, cmd_run_shell_free, cdata, 0, -1,
148: -1) == NULL)
1.60 nicm 149: cmd_run_shell_free(cdata);
150: } else {
151: if (cdata->item != NULL)
152: cmdq_continue(cdata->item);
153: cmd_run_shell_free(cdata);
154: }
155: }
156:
157: static void
1.2 nicm 158: cmd_run_shell_callback(struct job *job)
159: {
1.54 nicm 160: struct cmd_run_shell_data *cdata = job_get_data(job);
161: struct bufferevent *event = job_get_event(job);
1.63 nicm 162: struct cmdq_item *item = cdata->item;
1.54 nicm 163: char *cmd = cdata->cmd, *msg = NULL, *line;
1.5 nicm 164: size_t size;
1.54 nicm 165: int retcode, status;
1.7 nicm 166:
1.5 nicm 167: do {
1.54 nicm 168: if ((line = evbuffer_readline(event->input)) != NULL) {
1.18 nicm 169: cmd_run_shell_print(job, line);
1.16 nicm 170: free(line);
1.5 nicm 171: }
172: } while (line != NULL);
173:
1.54 nicm 174: size = EVBUFFER_LENGTH(event->input);
1.5 nicm 175: if (size != 0) {
176: line = xmalloc(size + 1);
1.54 nicm 177: memcpy(line, EVBUFFER_DATA(event->input), size);
1.5 nicm 178: line[size] = '\0';
1.2 nicm 179:
1.14 nicm 180: cmd_run_shell_print(job, line);
1.2 nicm 181:
1.12 nicm 182: free(line);
1.1 nicm 183: }
184:
1.54 nicm 185: status = job_get_status(job);
186: if (WIFEXITED(status)) {
187: if ((retcode = WEXITSTATUS(status)) != 0)
1.2 nicm 188: xasprintf(&msg, "'%s' returned %d", cmd, retcode);
1.54 nicm 189: } else if (WIFSIGNALED(status)) {
190: retcode = WTERMSIG(status);
1.2 nicm 191: xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.63 nicm 192: retcode += 128;
1.1 nicm 193: }
1.25 nicm 194: if (msg != NULL)
195: cmd_run_shell_print(job, msg);
196: free(msg);
1.40 nicm 197:
1.63 nicm 198: if (item != NULL) {
1.66 nicm 199: if (cmdq_get_client(item) != NULL &&
200: cmdq_get_client(item)->session == NULL)
201: cmdq_get_client(item)->retval = retcode;
1.63 nicm 202: cmdq_continue(item);
203: }
1.2 nicm 204: }
205:
1.38 nicm 206: static void
1.2 nicm 207: cmd_run_shell_free(void *data)
208: {
209: struct cmd_run_shell_data *cdata = data;
210:
1.60 nicm 211: evtimer_del(&cdata->timer);
1.61 nicm 212: if (cdata->s != NULL)
213: session_remove_ref(cdata->s, __func__);
1.60 nicm 214: free(cdata->cwd);
1.12 nicm 215: free(cdata->cmd);
216: free(cdata);
1.1 nicm 217: }
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