Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.43
1.43 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.42 2016/04/29 14:05:24 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 = {
1.39 nicm 39: .name = "if-shell",
40: .alias = "if",
41:
42: .args = { "bFt:", 2, 3 },
43: .usage = "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command "
44: "[command]",
45:
1.40 nicm 46: .tflag = CMD_PANE_CANFAIL,
47:
48: .flags = 0,
1.39 nicm 49: .exec = cmd_if_shell_exec
1.1 nicm 50: };
51:
1.5 nicm 52: struct cmd_if_shell_data {
1.30 nicm 53: char *cmd_if;
54: char *cmd_else;
55:
56: struct cmd_q *cmdq;
57: struct mouse_event mouse;
58:
59: int bflag;
1.31 nicm 60: int references;
1.5 nicm 61: };
1.1 nicm 62:
1.16 nicm 63: enum cmd_retval
1.20 nicm 64: cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 65: {
1.10 nicm 66: struct args *args = self->args;
1.5 nicm 67: struct cmd_if_shell_data *cdata;
1.27 nicm 68: char *shellcmd, *cmd, *cause;
69: struct cmd_list *cmdlist;
1.38 nicm 70: struct session *s = cmdq->state.tflag.s;
71: struct winlink *wl = cmdq->state.tflag.wl;
72: struct window_pane *wp = cmdq->state.tflag.wp;
1.19 nicm 73: struct format_tree *ft;
1.34 nicm 74: const char *cwd;
1.19 nicm 75:
1.38 nicm 76: if (cmdq->client != NULL && cmdq->client->session == NULL)
77: cwd = cmdq->client->cwd;
78: else if (s != NULL)
79: cwd = s->cwd;
80: else
81: cwd = NULL;
1.41 nicm 82:
1.37 nicm 83: ft = format_create(cmdq, 0);
1.43 ! nicm 84: format_defaults(ft, cmdq->state.c, s, wl, wp);
1.19 nicm 85: shellcmd = format_expand(ft, args->argv[0]);
86: format_free(ft);
1.27 nicm 87:
88: if (args_has(args, 'F')) {
89: cmd = NULL;
90: if (*shellcmd != '0' && *shellcmd != '\0')
91: cmd = args->argv[1];
92: else if (args->argc == 3)
93: cmd = args->argv[2];
1.35 nicm 94: free(shellcmd);
1.27 nicm 95: if (cmd == NULL)
96: return (CMD_RETURN_NORMAL);
97: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
98: if (cause != NULL) {
99: cmdq_error(cmdq, "%s", cause);
100: free(cause);
101: }
102: return (CMD_RETURN_ERROR);
103: }
1.30 nicm 104: cmdq_run(cmdq, cmdlist, &cmdq->item->mouse);
1.27 nicm 105: cmd_list_free(cmdlist);
106: return (CMD_RETURN_NORMAL);
107: }
1.5 nicm 108:
109: cdata = xmalloc(sizeof *cdata);
1.30 nicm 110:
1.13 nicm 111: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 112: if (args->argc == 3)
113: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 114: else
115: cdata->cmd_else = NULL;
1.30 nicm 116:
1.20 nicm 117: cdata->bflag = args_has(args, 'b');
1.5 nicm 118:
1.20 nicm 119: cdata->cmdq = cmdq;
1.30 nicm 120: memcpy(&cdata->mouse, &cmdq->item->mouse, sizeof cdata->mouse);
1.20 nicm 121: cmdq->references++;
1.5 nicm 122:
1.31 nicm 123: cdata->references = 1;
1.32 nicm 124: job_run(shellcmd, s, cwd, cmd_if_shell_callback, cmd_if_shell_free,
125: cdata);
1.19 nicm 126: free(shellcmd);
1.1 nicm 127:
1.20 nicm 128: if (cdata->bflag)
129: return (CMD_RETURN_NORMAL);
130: return (CMD_RETURN_WAIT);
1.1 nicm 131: }
132:
1.5 nicm 133: void
134: cmd_if_shell_callback(struct job *job)
1.1 nicm 135: {
1.5 nicm 136: struct cmd_if_shell_data *cdata = job->data;
1.20 nicm 137: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 138: struct cmd_list *cmdlist;
1.14 nicm 139: char *cause, *cmd;
1.1 nicm 140:
1.33 nicm 141: if (cmdq->flags & CMD_Q_DEAD)
1.20 nicm 142: return;
143:
144: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 145: cmd = cdata->cmd_else;
1.20 nicm 146: else
1.13 nicm 147: cmd = cdata->cmd_if;
1.20 nicm 148: if (cmd == NULL)
149: return;
150:
151: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1 nicm 152: if (cause != NULL) {
1.20 nicm 153: cmdq_error(cmdq, "%s", cause);
1.15 nicm 154: free(cause);
1.1 nicm 155: }
1.5 nicm 156: return;
1.1 nicm 157: }
158:
1.20 nicm 159: cmdq1 = cmdq_new(cmdq->client);
1.42 nicm 160: cmdq1->flags |= cmdq->flags & CMD_Q_NOHOOKS;
1.20 nicm 161: cmdq1->emptyfn = cmd_if_shell_done;
162: cmdq1->data = cdata;
163:
1.31 nicm 164: cdata->references++;
1.30 nicm 165: cmdq_run(cmdq1, cmdlist, &cdata->mouse);
1.1 nicm 166: cmd_list_free(cmdlist);
167: }
168:
169: void
1.20 nicm 170: cmd_if_shell_done(struct cmd_q *cmdq1)
171: {
172: struct cmd_if_shell_data *cdata = cmdq1->data;
173: struct cmd_q *cmdq = cdata->cmdq;
1.25 nicm 174:
175: if (cmdq1->client_exit >= 0)
176: cmdq->client_exit = cmdq1->client_exit;
1.31 nicm 177: cmdq_free(cmdq1);
178:
179: if (--cdata->references != 0)
180: return;
1.20 nicm 181:
182: if (!cmdq_free(cmdq) && !cdata->bflag)
183: cmdq_continue(cmdq);
184:
185: free(cdata->cmd_else);
186: free(cdata->cmd_if);
187: free(cdata);
188: }
189:
190: void
1.5 nicm 191: cmd_if_shell_free(void *data)
1.1 nicm 192: {
1.5 nicm 193: struct cmd_if_shell_data *cdata = data;
1.20 nicm 194: struct cmd_q *cmdq = cdata->cmdq;
195:
1.31 nicm 196: if (--cdata->references != 0)
1.20 nicm 197: return;
1.1 nicm 198:
1.20 nicm 199: if (!cmdq_free(cmdq) && !cdata->bflag)
200: cmdq_continue(cmdq);
1.1 nicm 201:
1.15 nicm 202: free(cdata->cmd_else);
203: free(cdata->cmd_if);
204: free(cdata);
1.1 nicm 205: }