Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.33
1.33 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.32 2015/04/24 22:19:36 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
1.5 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>
1.5 nicm 21: #include <sys/wait.h>
1.1 nicm 22:
1.15 nicm 23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
25:
26: #include "tmux.h"
27:
28: /*
1.14 nicm 29: * Executes a tmux command if a shell command returns true or false.
1.1 nicm 30: */
31:
1.20 nicm 32: enum cmd_retval cmd_if_shell_exec(struct cmd *, struct cmd_q *);
1.1 nicm 33:
1.5 nicm 34: void cmd_if_shell_callback(struct job *);
1.20 nicm 35: void cmd_if_shell_done(struct cmd_q *);
1.5 nicm 36: void cmd_if_shell_free(void *);
1.1 nicm 37:
38: const struct cmd_entry cmd_if_shell_entry = {
39: "if-shell", "if",
1.27 nicm 40: "bFt:", 2, 3,
41: "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command [command]",
1.10 nicm 42: 0,
43: cmd_if_shell_exec
1.1 nicm 44: };
45:
1.5 nicm 46: struct cmd_if_shell_data {
1.30 nicm 47: char *cmd_if;
48: char *cmd_else;
49:
50: struct cmd_q *cmdq;
51: struct mouse_event mouse;
52:
53: int bflag;
1.31 nicm 54: int references;
1.5 nicm 55: };
1.1 nicm 56:
1.16 nicm 57: enum cmd_retval
1.20 nicm 58: cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 59: {
1.10 nicm 60: struct args *args = self->args;
1.5 nicm 61: struct cmd_if_shell_data *cdata;
1.27 nicm 62: char *shellcmd, *cmd, *cause;
63: struct cmd_list *cmdlist;
1.23 nicm 64: struct client *c;
1.21 nicm 65: struct session *s = NULL;
66: struct winlink *wl = NULL;
67: struct window_pane *wp = NULL;
1.19 nicm 68: struct format_tree *ft;
1.32 nicm 69: int cwd;
1.19 nicm 70:
1.32 nicm 71: if (args_has(args, 't')) {
1.21 nicm 72: wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
1.32 nicm 73: cwd = wp->cwd;
74: } else {
1.23 nicm 75: c = cmd_find_client(cmdq, NULL, 1);
76: if (c != NULL && c->session != NULL) {
77: s = c->session;
78: wl = s->curw;
79: wp = wl->window->active;
80: }
1.32 nicm 81: if (cmdq->client != NULL && cmdq->client->session == NULL)
82: cwd = cmdq->client->cwd;
83: else if (s != NULL)
84: cwd = s->cwd;
85: else
86: cwd = -1;
1.23 nicm 87: }
1.19 nicm 88:
89: ft = format_create();
1.28 nicm 90: format_defaults(ft, NULL, s, wl, wp);
1.19 nicm 91: shellcmd = format_expand(ft, args->argv[0]);
92: format_free(ft);
1.27 nicm 93:
94: if (args_has(args, 'F')) {
95: cmd = NULL;
96: if (*shellcmd != '0' && *shellcmd != '\0')
97: cmd = args->argv[1];
98: else if (args->argc == 3)
99: cmd = args->argv[2];
100: if (cmd == NULL)
101: return (CMD_RETURN_NORMAL);
102: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
103: if (cause != NULL) {
104: cmdq_error(cmdq, "%s", cause);
105: free(cause);
106: }
107: return (CMD_RETURN_ERROR);
108: }
1.30 nicm 109: cmdq_run(cmdq, cmdlist, &cmdq->item->mouse);
1.27 nicm 110: cmd_list_free(cmdlist);
111: return (CMD_RETURN_NORMAL);
112: }
1.5 nicm 113:
114: cdata = xmalloc(sizeof *cdata);
1.30 nicm 115:
1.13 nicm 116: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 117: if (args->argc == 3)
118: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 119: else
120: cdata->cmd_else = NULL;
1.30 nicm 121:
1.20 nicm 122: cdata->bflag = args_has(args, 'b');
1.5 nicm 123:
1.20 nicm 124: cdata->cmdq = cmdq;
1.30 nicm 125: memcpy(&cdata->mouse, &cmdq->item->mouse, sizeof cdata->mouse);
1.20 nicm 126: cmdq->references++;
1.5 nicm 127:
1.31 nicm 128: cdata->references = 1;
1.32 nicm 129: job_run(shellcmd, s, cwd, cmd_if_shell_callback, cmd_if_shell_free,
130: cdata);
1.19 nicm 131: free(shellcmd);
1.1 nicm 132:
1.20 nicm 133: if (cdata->bflag)
134: return (CMD_RETURN_NORMAL);
135: return (CMD_RETURN_WAIT);
1.1 nicm 136: }
137:
1.5 nicm 138: void
139: cmd_if_shell_callback(struct job *job)
1.1 nicm 140: {
1.5 nicm 141: struct cmd_if_shell_data *cdata = job->data;
1.20 nicm 142: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 143: struct cmd_list *cmdlist;
1.14 nicm 144: char *cause, *cmd;
1.1 nicm 145:
1.33 ! nicm 146: if (cmdq->flags & CMD_Q_DEAD)
1.20 nicm 147: return;
148:
149: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 150: cmd = cdata->cmd_else;
1.20 nicm 151: else
1.13 nicm 152: cmd = cdata->cmd_if;
1.20 nicm 153: if (cmd == NULL)
154: return;
155:
156: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1 nicm 157: if (cause != NULL) {
1.20 nicm 158: cmdq_error(cmdq, "%s", cause);
1.15 nicm 159: free(cause);
1.1 nicm 160: }
1.5 nicm 161: return;
1.1 nicm 162: }
163:
1.20 nicm 164: cmdq1 = cmdq_new(cmdq->client);
165: cmdq1->emptyfn = cmd_if_shell_done;
166: cmdq1->data = cdata;
167:
1.31 nicm 168: cdata->references++;
1.30 nicm 169: cmdq_run(cmdq1, cmdlist, &cdata->mouse);
1.1 nicm 170: cmd_list_free(cmdlist);
171: }
172:
173: void
1.20 nicm 174: cmd_if_shell_done(struct cmd_q *cmdq1)
175: {
176: struct cmd_if_shell_data *cdata = cmdq1->data;
177: struct cmd_q *cmdq = cdata->cmdq;
1.25 nicm 178:
179: if (cmdq1->client_exit >= 0)
180: cmdq->client_exit = cmdq1->client_exit;
1.31 nicm 181: cmdq_free(cmdq1);
182:
183: if (--cdata->references != 0)
184: return;
1.20 nicm 185:
186: if (!cmdq_free(cmdq) && !cdata->bflag)
187: cmdq_continue(cmdq);
188:
189: free(cdata->cmd_else);
190: free(cdata->cmd_if);
191: free(cdata);
192: }
193:
194: void
1.5 nicm 195: cmd_if_shell_free(void *data)
1.1 nicm 196: {
1.5 nicm 197: struct cmd_if_shell_data *cdata = data;
1.20 nicm 198: struct cmd_q *cmdq = cdata->cmdq;
199:
1.31 nicm 200: if (--cdata->references != 0)
1.20 nicm 201: return;
1.1 nicm 202:
1.20 nicm 203: if (!cmdq_free(cmdq) && !cdata->bflag)
204: cmdq_continue(cmdq);
1.1 nicm 205:
1.15 nicm 206: free(cdata->cmd_else);
207: free(cdata->cmd_if);
208: free(cdata);
1.1 nicm 209: }
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