Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.56
1.56 ! nicm 1: /* $OpenBSD: cmd-run-shell.c,v 1.55 2018/08/27 11:03:34 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:
1.38 nicm 34: static void cmd_run_shell_callback(struct job *);
35: static void cmd_run_shell_free(void *);
36: static void cmd_run_shell_print(struct job *, const char *);
1.2 nicm 37:
1.1 nicm 38: const struct cmd_entry cmd_run_shell_entry = {
1.34 nicm 39: .name = "run-shell",
40: .alias = "run",
41:
42: .args = { "bt:", 1, 1 },
43: .usage = "[-b] " CMD_TARGET_PANE_USAGE " shell-command",
44:
1.49 nicm 45: .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
1.35 nicm 46:
47: .flags = 0,
1.34 nicm 48: .exec = cmd_run_shell_exec
1.1 nicm 49: };
50:
1.2 nicm 51: struct cmd_run_shell_data {
1.41 nicm 52: char *cmd;
53: struct cmdq_item *item;
54: int wp_id;
1.2 nicm 55: };
56:
1.38 nicm 57: static void
1.14 nicm 58: cmd_run_shell_print(struct job *job, const char *msg)
59: {
1.54 nicm 60: struct cmd_run_shell_data *cdata = job_get_data(job);
1.21 nicm 61: struct window_pane *wp = NULL;
1.43 nicm 62: struct cmd_find_state fs;
1.14 nicm 63:
1.21 nicm 64: if (cdata->wp_id != -1)
65: wp = window_pane_find_by_id(cdata->wp_id);
1.43 nicm 66: if (wp == NULL) {
67: if (cdata->item != NULL) {
68: cmdq_print(cdata->item, "%s", msg);
69: return;
70: }
1.51 nicm 71: if (cmd_find_from_nothing(&fs, 0) != 0)
1.43 nicm 72: return;
73: wp = fs.wp;
74: if (wp == NULL)
75: return;
1.14 nicm 76: }
77:
1.56 ! nicm 78: window_copy_init_for_output(wp);
! 79: window_copy_add(wp, "%s", msg);
1.14 nicm 80: }
81:
1.38 nicm 82: static enum cmd_retval
1.41 nicm 83: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 84: {
1.10 nicm 85: struct args *args = self->args;
1.2 nicm 86: struct cmd_run_shell_data *cdata;
1.49 nicm 87: struct client *c = cmd_find_client(item, NULL, 1);
88: struct session *s = item->target.s;
89: struct winlink *wl = item->target.wl;
90: struct window_pane *wp = item->target.wp;
1.40 nicm 91:
1.37 nicm 92: cdata = xcalloc(1, sizeof *cdata);
1.46 nicm 93: cdata->cmd = format_single(item, args->argv[0], c, s, wl, wp);
1.2 nicm 94:
1.40 nicm 95: if (args_has(args, 't') && wp != NULL)
96: cdata->wp_id = wp->id;
97: else
98: cdata->wp_id = -1;
99:
100: if (!args_has(args, 'b'))
1.41 nicm 101: cdata->item = item;
1.2 nicm 102:
1.55 nicm 103: if (job_run(cdata->cmd, s, server_client_get_cwd(item->client, s), NULL,
104: cmd_run_shell_callback, cmd_run_shell_free, cdata, 0) == NULL) {
105: cmdq_error(item, "failed to run command: %s", cdata->cmd);
106: free(cdata);
107: return (CMD_RETURN_ERROR);
108: }
1.2 nicm 109:
1.40 nicm 110: if (args_has(args, 'b'))
1.18 nicm 111: return (CMD_RETURN_NORMAL);
112: return (CMD_RETURN_WAIT);
1.2 nicm 113: }
1.1 nicm 114:
1.38 nicm 115: static void
1.2 nicm 116: cmd_run_shell_callback(struct job *job)
117: {
1.54 nicm 118: struct cmd_run_shell_data *cdata = job_get_data(job);
119: struct bufferevent *event = job_get_event(job);
120: char *cmd = cdata->cmd, *msg = NULL, *line;
1.5 nicm 121: size_t size;
1.54 nicm 122: int retcode, status;
1.7 nicm 123:
1.5 nicm 124: do {
1.54 nicm 125: if ((line = evbuffer_readline(event->input)) != NULL) {
1.18 nicm 126: cmd_run_shell_print(job, line);
1.16 nicm 127: free(line);
1.5 nicm 128: }
129: } while (line != NULL);
130:
1.54 nicm 131: size = EVBUFFER_LENGTH(event->input);
1.5 nicm 132: if (size != 0) {
133: line = xmalloc(size + 1);
1.54 nicm 134: memcpy(line, EVBUFFER_DATA(event->input), size);
1.5 nicm 135: line[size] = '\0';
1.2 nicm 136:
1.14 nicm 137: cmd_run_shell_print(job, line);
1.2 nicm 138:
1.12 nicm 139: free(line);
1.1 nicm 140: }
141:
1.54 nicm 142: status = job_get_status(job);
143: if (WIFEXITED(status)) {
144: if ((retcode = WEXITSTATUS(status)) != 0)
1.2 nicm 145: xasprintf(&msg, "'%s' returned %d", cmd, retcode);
1.54 nicm 146: } else if (WIFSIGNALED(status)) {
147: retcode = WTERMSIG(status);
1.2 nicm 148: xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.1 nicm 149: }
1.25 nicm 150: if (msg != NULL)
151: cmd_run_shell_print(job, msg);
152: free(msg);
1.40 nicm 153:
1.41 nicm 154: if (cdata->item != NULL)
155: cdata->item->flags &= ~CMDQ_WAITING;
1.2 nicm 156: }
157:
1.38 nicm 158: static void
1.2 nicm 159: cmd_run_shell_free(void *data)
160: {
161: struct cmd_run_shell_data *cdata = data;
162:
1.12 nicm 163: free(cdata->cmd);
164: free(cdata);
1.1 nicm 165: }
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