1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
5: * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
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:
23: #include <stdlib.h>
24: #include <string.h>
25:
26: #include "tmux.h"
27:
28: /*
29: * Executes a tmux command if a shell command returns true or false.
30: */
31:
32: static enum cmd_retval cmd_if_shell_exec(struct cmd *, struct cmdq_item *);
33:
34: static enum cmd_retval cmd_if_shell_error(struct cmdq_item *, void *);
35: static void cmd_if_shell_callback(struct job *);
36: static void cmd_if_shell_free(void *);
37:
38: const struct cmd_entry cmd_if_shell_entry = {
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:
46: .tflag = CMD_PANE_CANFAIL,
47:
48: .flags = 0,
49: .exec = cmd_if_shell_exec
50: };
51:
52: struct cmd_if_shell_data {
53: char *file;
54: u_int line;
55:
56: char *cmd_if;
57: char *cmd_else;
58:
59: struct client *client;
60: struct cmdq_item *item;
61: struct mouse_event mouse;
62: };
63:
64: static enum cmd_retval
65: cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
66: {
67: struct args *args = self->args;
68: struct cmd_if_shell_data *cdata;
69: char *shellcmd, *cmd, *cause;
70: struct cmd_list *cmdlist;
71: struct cmdq_item *new_item;
72: struct client *c = item->state.c;
73: struct session *s = item->state.tflag.s;
74: struct winlink *wl = item->state.tflag.wl;
75: struct window_pane *wp = item->state.tflag.wp;
76: const char *cwd;
77:
78: if (item->client != NULL && item->client->session == NULL)
79: cwd = item->client->cwd;
80: else if (s != NULL)
81: cwd = s->cwd;
82: else
83: cwd = NULL;
84:
85: shellcmd = format_single(item, args->argv[0], c, s, wl, wp);
86: if (args_has(args, 'F')) {
87: cmd = NULL;
88: if (*shellcmd != '0' && *shellcmd != '\0')
89: cmd = args->argv[1];
90: else if (args->argc == 3)
91: cmd = args->argv[2];
92: free(shellcmd);
93: if (cmd == NULL)
94: return (CMD_RETURN_NORMAL);
95: cmdlist = cmd_string_parse(cmd, NULL, 0, &cause);
96: if (cmdlist == NULL) {
97: if (cause != NULL) {
98: cmdq_error(item, "%s", cause);
99: free(cause);
100: }
101: return (CMD_RETURN_ERROR);
102: }
103: new_item = cmdq_get_command(cmdlist, NULL, &item->mouse, 0);
104: cmdq_insert_after(item, new_item);
105: cmd_list_free(cmdlist);
106: return (CMD_RETURN_NORMAL);
107: }
108:
109: cdata = xcalloc(1, sizeof *cdata);
110: if (self->file != NULL) {
111: cdata->file = xstrdup(self->file);
112: cdata->line = self->line;
113: }
114:
115: cdata->cmd_if = xstrdup(args->argv[1]);
116: if (args->argc == 3)
117: cdata->cmd_else = xstrdup(args->argv[2]);
118: else
119: cdata->cmd_else = NULL;
120:
121: cdata->client = item->client;
122: cdata->client->references++;
123:
124: if (!args_has(args, 'b'))
125: cdata->item = item;
126: else
127: cdata->item = NULL;
128: memcpy(&cdata->mouse, &item->mouse, sizeof cdata->mouse);
129:
130: job_run(shellcmd, s, cwd, cmd_if_shell_callback, cmd_if_shell_free,
131: cdata);
132: free(shellcmd);
133:
134: if (args_has(args, 'b'))
135: return (CMD_RETURN_NORMAL);
136: return (CMD_RETURN_WAIT);
137: }
138:
139: static enum cmd_retval
140: cmd_if_shell_error(struct cmdq_item *item, void *data)
141: {
142: char *error = data;
143:
144: cmdq_error(item, "%s", error);
145: free(error);
146:
147: return (CMD_RETURN_NORMAL);
148: }
149:
150: static void
151: cmd_if_shell_callback(struct job *job)
152: {
153: struct cmd_if_shell_data *cdata = job->data;
154: struct client *c = cdata->client;
155: struct cmd_list *cmdlist;
156: struct cmdq_item *new_item;
157: char *cause, *cmd, *file = cdata->file;
158: u_int line = cdata->line;
159:
160: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
161: cmd = cdata->cmd_else;
162: else
163: cmd = cdata->cmd_if;
164: if (cmd == NULL)
165: goto out;
166:
167: cmdlist = cmd_string_parse(cmd, file, line, &cause);
168: if (cmdlist == NULL) {
169: if (cause != NULL)
170: new_item = cmdq_get_callback(cmd_if_shell_error, cause);
171: else
172: new_item = NULL;
173: } else {
174: new_item = cmdq_get_command(cmdlist, NULL, &cdata->mouse, 0);
175: cmd_list_free(cmdlist);
176: }
177:
178: if (new_item != NULL) {
179: if (cdata->item == NULL)
180: cmdq_append(c, new_item);
181: else
182: cmdq_insert_after(cdata->item, new_item);
183: }
184:
185: out:
186: if (cdata->item != NULL)
187: cdata->item->flags &= ~CMDQ_WAITING;
188: }
189:
190: static void
191: cmd_if_shell_free(void *data)
192: {
193: struct cmd_if_shell_data *cdata = data;
194:
195: server_client_unref(cdata->client);
196:
197: free(cdata->cmd_else);
198: free(cdata->cmd_if);
199:
200: free(cdata->file);
201: free(cdata);
202: }
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