Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.39
1.39 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.38 2015/12/13 14:32:38 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:
! 46: .flags = CMD_PANE_T|CMD_CANFAIL,
! 47: .exec = cmd_if_shell_exec
1.1 nicm 48: };
49:
1.5 nicm 50: struct cmd_if_shell_data {
1.30 nicm 51: char *cmd_if;
52: char *cmd_else;
53:
54: struct cmd_q *cmdq;
55: struct mouse_event mouse;
56:
57: int bflag;
1.31 nicm 58: int references;
1.5 nicm 59: };
1.1 nicm 60:
1.16 nicm 61: enum cmd_retval
1.20 nicm 62: cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 63: {
1.10 nicm 64: struct args *args = self->args;
1.5 nicm 65: struct cmd_if_shell_data *cdata;
1.27 nicm 66: char *shellcmd, *cmd, *cause;
67: struct cmd_list *cmdlist;
1.38 nicm 68: struct session *s = cmdq->state.tflag.s;
69: struct winlink *wl = cmdq->state.tflag.wl;
70: struct window_pane *wp = cmdq->state.tflag.wp;
1.19 nicm 71: struct format_tree *ft;
1.34 nicm 72: const char *cwd;
1.19 nicm 73:
1.38 nicm 74: cwd = wp->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;
1.37 nicm 82: ft = format_create(cmdq, 0);
1.28 nicm 83: format_defaults(ft, NULL, s, wl, wp);
1.19 nicm 84: shellcmd = format_expand(ft, args->argv[0]);
85: format_free(ft);
1.27 nicm 86:
87: if (args_has(args, 'F')) {
88: cmd = NULL;
89: if (*shellcmd != '0' && *shellcmd != '\0')
90: cmd = args->argv[1];
91: else if (args->argc == 3)
92: cmd = args->argv[2];
1.35 nicm 93: free(shellcmd);
1.27 nicm 94: if (cmd == NULL)
95: return (CMD_RETURN_NORMAL);
96: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
97: if (cause != NULL) {
98: cmdq_error(cmdq, "%s", cause);
99: free(cause);
100: }
101: return (CMD_RETURN_ERROR);
102: }
1.30 nicm 103: cmdq_run(cmdq, cmdlist, &cmdq->item->mouse);
1.27 nicm 104: cmd_list_free(cmdlist);
105: return (CMD_RETURN_NORMAL);
106: }
1.5 nicm 107:
108: cdata = xmalloc(sizeof *cdata);
1.30 nicm 109:
1.13 nicm 110: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 111: if (args->argc == 3)
112: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 113: else
114: cdata->cmd_else = NULL;
1.30 nicm 115:
1.20 nicm 116: cdata->bflag = args_has(args, 'b');
1.5 nicm 117:
1.20 nicm 118: cdata->cmdq = cmdq;
1.30 nicm 119: memcpy(&cdata->mouse, &cmdq->item->mouse, sizeof cdata->mouse);
1.20 nicm 120: cmdq->references++;
1.5 nicm 121:
1.31 nicm 122: cdata->references = 1;
1.32 nicm 123: job_run(shellcmd, s, cwd, cmd_if_shell_callback, cmd_if_shell_free,
124: cdata);
1.19 nicm 125: free(shellcmd);
1.1 nicm 126:
1.20 nicm 127: if (cdata->bflag)
128: return (CMD_RETURN_NORMAL);
129: return (CMD_RETURN_WAIT);
1.1 nicm 130: }
131:
1.5 nicm 132: void
133: cmd_if_shell_callback(struct job *job)
1.1 nicm 134: {
1.5 nicm 135: struct cmd_if_shell_data *cdata = job->data;
1.20 nicm 136: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 137: struct cmd_list *cmdlist;
1.14 nicm 138: char *cause, *cmd;
1.1 nicm 139:
1.33 nicm 140: if (cmdq->flags & CMD_Q_DEAD)
1.20 nicm 141: return;
142:
143: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 144: cmd = cdata->cmd_else;
1.20 nicm 145: else
1.13 nicm 146: cmd = cdata->cmd_if;
1.20 nicm 147: if (cmd == NULL)
148: return;
149:
150: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1 nicm 151: if (cause != NULL) {
1.20 nicm 152: cmdq_error(cmdq, "%s", cause);
1.15 nicm 153: free(cause);
1.1 nicm 154: }
1.5 nicm 155: return;
1.1 nicm 156: }
157:
1.20 nicm 158: cmdq1 = cmdq_new(cmdq->client);
159: cmdq1->emptyfn = cmd_if_shell_done;
160: cmdq1->data = cdata;
161:
1.31 nicm 162: cdata->references++;
1.30 nicm 163: cmdq_run(cmdq1, cmdlist, &cdata->mouse);
1.1 nicm 164: cmd_list_free(cmdlist);
165: }
166:
167: void
1.20 nicm 168: cmd_if_shell_done(struct cmd_q *cmdq1)
169: {
170: struct cmd_if_shell_data *cdata = cmdq1->data;
171: struct cmd_q *cmdq = cdata->cmdq;
1.25 nicm 172:
173: if (cmdq1->client_exit >= 0)
174: cmdq->client_exit = cmdq1->client_exit;
1.31 nicm 175: cmdq_free(cmdq1);
176:
177: if (--cdata->references != 0)
178: return;
1.20 nicm 179:
180: if (!cmdq_free(cmdq) && !cdata->bflag)
181: cmdq_continue(cmdq);
182:
183: free(cdata->cmd_else);
184: free(cdata->cmd_if);
185: free(cdata);
186: }
187:
188: void
1.5 nicm 189: cmd_if_shell_free(void *data)
1.1 nicm 190: {
1.5 nicm 191: struct cmd_if_shell_data *cdata = data;
1.20 nicm 192: struct cmd_q *cmdq = cdata->cmdq;
193:
1.31 nicm 194: if (--cdata->references != 0)
1.20 nicm 195: return;
1.1 nicm 196:
1.20 nicm 197: if (!cmdq_free(cmdq) && !cdata->bflag)
198: cmdq_continue(cmdq);
1.1 nicm 199:
1.15 nicm 200: free(cdata->cmd_else);
201: free(cdata->cmd_if);
202: free(cdata);
1.1 nicm 203: }
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