Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.50
1.50 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.49 2017/01/15 22:00:56 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:
1.48 nicm 32: static enum cmd_retval cmd_if_shell_exec(struct cmd *, struct cmdq_item *);
1.1 nicm 33:
1.48 nicm 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 *);
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:
1.47 nicm 59: struct client *client;
1.48 nicm 60: struct cmdq_item *item;
1.30 nicm 61: struct mouse_event mouse;
1.5 nicm 62: };
1.1 nicm 63:
1.45 nicm 64: static enum cmd_retval
1.48 nicm 65: cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 66: {
1.10 nicm 67: struct args *args = self->args;
1.5 nicm 68: struct cmd_if_shell_data *cdata;
1.27 nicm 69: char *shellcmd, *cmd, *cause;
70: struct cmd_list *cmdlist;
1.48 nicm 71: struct cmdq_item *new_item;
72: struct session *s = item->state.tflag.s;
73: struct winlink *wl = item->state.tflag.wl;
74: struct window_pane *wp = item->state.tflag.wp;
1.19 nicm 75: struct format_tree *ft;
1.34 nicm 76: const char *cwd;
1.19 nicm 77:
1.48 nicm 78: if (item->client != NULL && item->client->session == NULL)
79: cwd = item->client->cwd;
1.38 nicm 80: else if (s != NULL)
81: cwd = s->cwd;
82: else
83: cwd = NULL;
1.41 nicm 84:
1.50 ! nicm 85: ft = format_create(item, FORMAT_NONE, 0);
1.48 nicm 86: format_defaults(ft, item->state.c, s, wl, wp);
1.19 nicm 87: shellcmd = format_expand(ft, args->argv[0]);
88: format_free(ft);
1.27 nicm 89:
90: if (args_has(args, 'F')) {
91: cmd = NULL;
92: if (*shellcmd != '0' && *shellcmd != '\0')
93: cmd = args->argv[1];
94: else if (args->argc == 3)
95: cmd = args->argv[2];
1.35 nicm 96: free(shellcmd);
1.27 nicm 97: if (cmd == NULL)
98: return (CMD_RETURN_NORMAL);
1.49 nicm 99: cmdlist = cmd_string_parse(cmd, NULL, 0, &cause);
100: if (cmdlist == NULL) {
1.27 nicm 101: if (cause != NULL) {
1.48 nicm 102: cmdq_error(item, "%s", cause);
1.27 nicm 103: free(cause);
104: }
105: return (CMD_RETURN_ERROR);
106: }
1.48 nicm 107: new_item = cmdq_get_command(cmdlist, NULL, &item->mouse, 0);
108: cmdq_insert_after(item, new_item);
1.27 nicm 109: cmd_list_free(cmdlist);
110: return (CMD_RETURN_NORMAL);
111: }
1.5 nicm 112:
1.44 nicm 113: cdata = xcalloc(1, sizeof *cdata);
114: if (self->file != NULL) {
115: cdata->file = xstrdup(self->file);
116: cdata->line = self->line;
117: }
1.30 nicm 118:
1.13 nicm 119: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 120: if (args->argc == 3)
121: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 122: else
123: cdata->cmd_else = NULL;
1.30 nicm 124:
1.48 nicm 125: cdata->client = item->client;
1.47 nicm 126: cdata->client->references++;
1.5 nicm 127:
1.47 nicm 128: if (!args_has(args, 'b'))
1.48 nicm 129: cdata->item = item;
1.47 nicm 130: else
1.48 nicm 131: cdata->item = NULL;
132: memcpy(&cdata->mouse, &item->mouse, sizeof cdata->mouse);
1.5 nicm 133:
1.32 nicm 134: job_run(shellcmd, s, cwd, cmd_if_shell_callback, cmd_if_shell_free,
135: cdata);
1.19 nicm 136: free(shellcmd);
1.1 nicm 137:
1.47 nicm 138: if (args_has(args, 'b'))
1.20 nicm 139: return (CMD_RETURN_NORMAL);
140: return (CMD_RETURN_WAIT);
1.1 nicm 141: }
142:
1.47 nicm 143: static enum cmd_retval
1.48 nicm 144: cmd_if_shell_error(struct cmdq_item *item, void *data)
1.47 nicm 145: {
146: char *error = data;
147:
1.48 nicm 148: cmdq_error(item, "%s", error);
1.47 nicm 149: free(error);
150:
151: return (CMD_RETURN_NORMAL);
152: }
153:
1.45 nicm 154: static void
1.5 nicm 155: cmd_if_shell_callback(struct job *job)
1.1 nicm 156: {
1.5 nicm 157: struct cmd_if_shell_data *cdata = job->data;
1.47 nicm 158: struct client *c = cdata->client;
1.1 nicm 159: struct cmd_list *cmdlist;
1.48 nicm 160: struct cmdq_item *new_item;
1.47 nicm 161: char *cause, *cmd, *file = cdata->file;
162: u_int line = cdata->line;
1.20 nicm 163:
164: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 165: cmd = cdata->cmd_else;
1.20 nicm 166: else
1.13 nicm 167: cmd = cdata->cmd_if;
1.20 nicm 168: if (cmd == NULL)
1.47 nicm 169: goto out;
1.20 nicm 170:
1.49 nicm 171: cmdlist = cmd_string_parse(cmd, file, line, &cause);
172: if (cmdlist == NULL) {
1.47 nicm 173: if (cause != NULL)
1.48 nicm 174: new_item = cmdq_get_callback(cmd_if_shell_error, cause);
1.47 nicm 175: else
1.48 nicm 176: new_item = NULL;
1.47 nicm 177: } else {
1.48 nicm 178: new_item = cmdq_get_command(cmdlist, NULL, &cdata->mouse, 0);
1.47 nicm 179: cmd_list_free(cmdlist);
1.1 nicm 180: }
181:
1.48 nicm 182: if (new_item != NULL) {
183: if (cdata->item == NULL)
184: cmdq_append(c, new_item);
1.47 nicm 185: else
1.48 nicm 186: cmdq_insert_after(cdata->item, new_item);
1.47 nicm 187: }
1.25 nicm 188:
1.47 nicm 189: out:
1.48 nicm 190: if (cdata->item != NULL)
191: cdata->item->flags &= ~CMDQ_WAITING;
1.20 nicm 192: }
193:
1.45 nicm 194: static 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;
1.1 nicm 198:
1.47 nicm 199: server_client_unref(cdata->client);
1.1 nicm 200:
1.15 nicm 201: free(cdata->cmd_else);
202: free(cdata->cmd_if);
1.44 nicm 203:
204: free(cdata->file);
1.15 nicm 205: free(cdata);
1.1 nicm 206: }
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