Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.44
1.44 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.43 2016/04/29 17:12:12 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 {
1.44 ! nicm 53: char *file;
! 54: u_int line;
! 55:
1.30 nicm 56: char *cmd_if;
57: char *cmd_else;
58:
59: struct cmd_q *cmdq;
60: struct mouse_event mouse;
61:
62: int bflag;
1.31 nicm 63: int references;
1.5 nicm 64: };
1.1 nicm 65:
1.16 nicm 66: enum cmd_retval
1.20 nicm 67: cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 68: {
1.10 nicm 69: struct args *args = self->args;
1.5 nicm 70: struct cmd_if_shell_data *cdata;
1.27 nicm 71: char *shellcmd, *cmd, *cause;
72: struct cmd_list *cmdlist;
1.38 nicm 73: struct session *s = cmdq->state.tflag.s;
74: struct winlink *wl = cmdq->state.tflag.wl;
75: struct window_pane *wp = cmdq->state.tflag.wp;
1.19 nicm 76: struct format_tree *ft;
1.34 nicm 77: const char *cwd;
1.19 nicm 78:
1.38 nicm 79: if (cmdq->client != NULL && cmdq->client->session == NULL)
80: cwd = cmdq->client->cwd;
81: else if (s != NULL)
82: cwd = s->cwd;
83: else
84: cwd = NULL;
1.41 nicm 85:
1.37 nicm 86: ft = format_create(cmdq, 0);
1.43 nicm 87: format_defaults(ft, cmdq->state.c, s, wl, wp);
1.19 nicm 88: shellcmd = format_expand(ft, args->argv[0]);
89: format_free(ft);
1.27 nicm 90:
91: if (args_has(args, 'F')) {
92: cmd = NULL;
93: if (*shellcmd != '0' && *shellcmd != '\0')
94: cmd = args->argv[1];
95: else if (args->argc == 3)
96: cmd = args->argv[2];
1.35 nicm 97: free(shellcmd);
1.27 nicm 98: if (cmd == NULL)
99: return (CMD_RETURN_NORMAL);
100: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
101: if (cause != NULL) {
102: cmdq_error(cmdq, "%s", cause);
103: free(cause);
104: }
105: return (CMD_RETURN_ERROR);
106: }
1.30 nicm 107: cmdq_run(cmdq, cmdlist, &cmdq->item->mouse);
1.27 nicm 108: cmd_list_free(cmdlist);
109: return (CMD_RETURN_NORMAL);
110: }
1.5 nicm 111:
1.44 ! nicm 112: cdata = xcalloc(1, sizeof *cdata);
! 113: if (self->file != NULL) {
! 114: cdata->file = xstrdup(self->file);
! 115: cdata->line = self->line;
! 116: }
1.30 nicm 117:
1.13 nicm 118: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 119: if (args->argc == 3)
120: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 121: else
122: cdata->cmd_else = NULL;
1.30 nicm 123:
1.20 nicm 124: cdata->bflag = args_has(args, 'b');
1.5 nicm 125:
1.20 nicm 126: cdata->cmdq = cmdq;
1.30 nicm 127: memcpy(&cdata->mouse, &cmdq->item->mouse, sizeof cdata->mouse);
1.20 nicm 128: cmdq->references++;
1.5 nicm 129:
1.31 nicm 130: cdata->references = 1;
1.32 nicm 131: job_run(shellcmd, s, cwd, cmd_if_shell_callback, cmd_if_shell_free,
132: cdata);
1.19 nicm 133: free(shellcmd);
1.1 nicm 134:
1.20 nicm 135: if (cdata->bflag)
136: return (CMD_RETURN_NORMAL);
137: return (CMD_RETURN_WAIT);
1.1 nicm 138: }
139:
1.5 nicm 140: void
141: cmd_if_shell_callback(struct job *job)
1.1 nicm 142: {
1.5 nicm 143: struct cmd_if_shell_data *cdata = job->data;
1.20 nicm 144: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 145: struct cmd_list *cmdlist;
1.14 nicm 146: char *cause, *cmd;
1.1 nicm 147:
1.33 nicm 148: if (cmdq->flags & CMD_Q_DEAD)
1.20 nicm 149: return;
150:
151: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 152: cmd = cdata->cmd_else;
1.20 nicm 153: else
1.13 nicm 154: cmd = cdata->cmd_if;
1.20 nicm 155: if (cmd == NULL)
156: return;
157:
1.44 ! nicm 158: if (cmd_string_parse(cmd, &cmdlist, cdata->file, cdata->line,
! 159: &cause) != 0) {
1.1 nicm 160: if (cause != NULL) {
1.20 nicm 161: cmdq_error(cmdq, "%s", cause);
1.15 nicm 162: free(cause);
1.1 nicm 163: }
1.5 nicm 164: return;
1.1 nicm 165: }
166:
1.20 nicm 167: cmdq1 = cmdq_new(cmdq->client);
1.42 nicm 168: cmdq1->flags |= cmdq->flags & CMD_Q_NOHOOKS;
1.20 nicm 169: cmdq1->emptyfn = cmd_if_shell_done;
170: cmdq1->data = cdata;
171:
1.31 nicm 172: cdata->references++;
1.30 nicm 173: cmdq_run(cmdq1, cmdlist, &cdata->mouse);
1.1 nicm 174: cmd_list_free(cmdlist);
175: }
176:
177: void
1.20 nicm 178: cmd_if_shell_done(struct cmd_q *cmdq1)
179: {
180: struct cmd_if_shell_data *cdata = cmdq1->data;
181: struct cmd_q *cmdq = cdata->cmdq;
1.25 nicm 182:
183: if (cmdq1->client_exit >= 0)
184: cmdq->client_exit = cmdq1->client_exit;
1.31 nicm 185: cmdq_free(cmdq1);
186:
187: if (--cdata->references != 0)
188: return;
1.20 nicm 189:
190: if (!cmdq_free(cmdq) && !cdata->bflag)
191: cmdq_continue(cmdq);
192:
193: free(cdata->cmd_else);
194: free(cdata->cmd_if);
1.44 ! nicm 195:
! 196: free(cdata->file);
1.20 nicm 197: free(cdata);
198: }
199:
200: void
1.5 nicm 201: cmd_if_shell_free(void *data)
1.1 nicm 202: {
1.5 nicm 203: struct cmd_if_shell_data *cdata = data;
1.20 nicm 204: struct cmd_q *cmdq = cdata->cmdq;
205:
1.31 nicm 206: if (--cdata->references != 0)
1.20 nicm 207: return;
1.1 nicm 208:
1.20 nicm 209: if (!cmdq_free(cmdq) && !cdata->bflag)
210: cmdq_continue(cmdq);
1.1 nicm 211:
1.15 nicm 212: free(cdata->cmd_else);
213: free(cdata->cmd_if);
1.44 ! nicm 214:
! 215: free(cdata->file);
1.15 nicm 216: free(cdata);
1.1 nicm 217: }
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