Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.80
1.80 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.79 2021/08/21 17:25:32 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:
1.80 ! nicm 34: static void cmd_if_shell_callback(struct job *);
! 35: static void cmd_if_shell_free(void *);
1.1 nicm 36:
37: const struct cmd_entry cmd_if_shell_entry = {
1.39 nicm 38: .name = "if-shell",
39: .alias = "if",
40:
1.78 nicm 41: .args = { "bFt:", 2, 3, NULL },
1.39 nicm 42: .usage = "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command "
43: "[command]",
44:
1.55 nicm 45: .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
1.40 nicm 46:
47: .flags = 0,
1.39 nicm 48: .exec = cmd_if_shell_exec
1.1 nicm 49: };
50:
1.5 nicm 51: struct cmd_if_shell_data {
1.80 ! nicm 52: struct cmd_list *cmd_if;
! 53: struct cmd_list *cmd_else;
1.30 nicm 54:
1.47 nicm 55: struct client *client;
1.48 nicm 56: struct cmdq_item *item;
1.5 nicm 57: };
1.1 nicm 58:
1.45 nicm 59: static enum cmd_retval
1.48 nicm 60: cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 61: {
1.67 nicm 62: struct args *args = cmd_get_args(self);
1.68 nicm 63: struct cmd_find_state *target = cmdq_get_target(item);
1.5 nicm 64: struct cmd_if_shell_data *cdata;
1.80 ! nicm 65: struct cmdq_item *new_item;
! 66: char *shellcmd;
1.74 nicm 67: struct client *tc = cmdq_get_target_client(item);
1.68 nicm 68: struct session *s = target->s;
1.80 ! nicm 69: struct cmd_list *cmdlist = NULL;
1.77 nicm 70: u_int count = args_count(args);
1.41 nicm 71:
1.77 nicm 72: shellcmd = format_single_from_target(item, args_string(args, 0));
1.27 nicm 73: if (args_has(args, 'F')) {
74: if (*shellcmd != '0' && *shellcmd != '\0')
1.80 ! nicm 75: cmdlist = args_make_commands_now(self, item, 1);
1.77 nicm 76: else if (count == 3)
1.80 ! nicm 77: cmdlist = args_make_commands_now(self, item, 2);
! 78: else {
! 79: free(shellcmd);
! 80: return (CMD_RETURN_NORMAL);
! 81: }
1.35 nicm 82: free(shellcmd);
1.80 ! nicm 83: if (cmdlist == NULL)
1.27 nicm 84: return (CMD_RETURN_ERROR);
1.80 ! nicm 85: new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
! 86: cmdq_insert_after(item, new_item);
1.27 nicm 87: return (CMD_RETURN_NORMAL);
88: }
1.5 nicm 89:
1.44 nicm 90: cdata = xcalloc(1, sizeof *cdata);
1.30 nicm 91:
1.80 ! nicm 92: cdata->cmd_if = args_make_commands_now(self, item, 1);
! 93: if (cdata->cmd_if == NULL)
! 94: return (CMD_RETURN_ERROR);
! 95: if (count == 3) {
! 96: cdata->cmd_else = args_make_commands_now(self, item, 2);
! 97: if (cdata->cmd_else == NULL)
! 98: return (CMD_RETURN_ERROR);
! 99: }
1.30 nicm 100:
1.65 nicm 101: if (!args_has(args, 'b'))
1.68 nicm 102: cdata->client = cmdq_get_client(item);
1.65 nicm 103: else
1.74 nicm 104: cdata->client = tc;
1.54 nicm 105: if (cdata->client != NULL)
106: cdata->client->references++;
1.5 nicm 107:
1.47 nicm 108: if (!args_has(args, 'b'))
1.48 nicm 109: cdata->item = item;
1.61 nicm 110:
1.75 nicm 111: if (job_run(shellcmd, 0, NULL, s,
1.68 nicm 112: server_client_get_cwd(cmdq_get_client(item), s), NULL,
1.66 nicm 113: cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
114: -1) == NULL) {
1.60 nicm 115: cmdq_error(item, "failed to run command: %s", shellcmd);
116: free(shellcmd);
117: free(cdata);
118: return (CMD_RETURN_ERROR);
119: }
1.19 nicm 120: free(shellcmd);
1.1 nicm 121:
1.47 nicm 122: if (args_has(args, 'b'))
1.20 nicm 123: return (CMD_RETURN_NORMAL);
124: return (CMD_RETURN_WAIT);
1.1 nicm 125: }
126:
1.45 nicm 127: static void
1.5 nicm 128: cmd_if_shell_callback(struct job *job)
1.1 nicm 129: {
1.59 nicm 130: struct cmd_if_shell_data *cdata = job_get_data(job);
1.47 nicm 131: struct client *c = cdata->client;
1.80 ! nicm 132: struct cmdq_item *item = cdata->item, *new_item;
! 133: struct cmd_list *cmdlist;
1.59 nicm 134: int status;
1.20 nicm 135:
1.59 nicm 136: status = job_get_status(job);
137: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
1.80 ! nicm 138: cmdlist = cdata->cmd_else;
1.20 nicm 139: else
1.80 ! nicm 140: cmdlist = cdata->cmd_if;
! 141: if (cmdlist == NULL)
1.47 nicm 142: goto out;
1.20 nicm 143:
1.80 ! nicm 144: if (item == NULL) {
! 145: new_item = cmdq_get_command(cmdlist, NULL);
! 146: cmdq_append(c, new_item);
! 147: } else {
! 148: new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
! 149: cmdq_insert_after(item, new_item);
1.47 nicm 150: }
1.25 nicm 151:
1.47 nicm 152: out:
1.48 nicm 153: if (cdata->item != NULL)
1.64 nicm 154: cmdq_continue(cdata->item);
1.20 nicm 155: }
156:
1.45 nicm 157: static void
1.5 nicm 158: cmd_if_shell_free(void *data)
1.1 nicm 159: {
1.5 nicm 160: struct cmd_if_shell_data *cdata = data;
1.1 nicm 161:
1.54 nicm 162: if (cdata->client != NULL)
163: server_client_unref(cdata->client);
1.1 nicm 164:
1.80 ! nicm 165: if (cdata->cmd_else != NULL)
! 166: cmd_list_free(cdata->cmd_else);
! 167: cmd_list_free(cdata->cmd_if);
1.61 nicm 168:
1.15 nicm 169: free(cdata);
1.1 nicm 170: }
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