Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.81
1.81 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.80 2021/08/23 12:33:55 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:
1.81 ! nicm 32: static enum args_parse_type cmd_if_shell_args_parse(struct args *, u_int,
! 33: char **);
! 34: static enum cmd_retval cmd_if_shell_exec(struct cmd *,
! 35: struct cmdq_item *);
1.1 nicm 36:
1.80 nicm 37: static void cmd_if_shell_callback(struct job *);
38: static void cmd_if_shell_free(void *);
1.1 nicm 39:
40: const struct cmd_entry cmd_if_shell_entry = {
1.39 nicm 41: .name = "if-shell",
42: .alias = "if",
43:
1.81 ! nicm 44: .args = { "bFt:", 2, 3, cmd_if_shell_args_parse },
1.39 nicm 45: .usage = "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command "
46: "[command]",
47:
1.55 nicm 48: .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
1.40 nicm 49:
50: .flags = 0,
1.39 nicm 51: .exec = cmd_if_shell_exec
1.1 nicm 52: };
53:
1.5 nicm 54: struct cmd_if_shell_data {
1.80 nicm 55: struct cmd_list *cmd_if;
56: struct cmd_list *cmd_else;
1.30 nicm 57:
1.47 nicm 58: struct client *client;
1.48 nicm 59: struct cmdq_item *item;
1.5 nicm 60: };
1.81 ! nicm 61:
! 62: static enum args_parse_type
! 63: cmd_if_shell_args_parse(__unused struct args *args, u_int idx,
! 64: __unused char **cause)
! 65: {
! 66: if (idx == 1 || idx == 2)
! 67: return (ARGS_PARSE_COMMANDS_OR_STRING);
! 68: return (ARGS_PARSE_STRING);
! 69: }
1.1 nicm 70:
1.45 nicm 71: static enum cmd_retval
1.48 nicm 72: cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 73: {
1.67 nicm 74: struct args *args = cmd_get_args(self);
1.68 nicm 75: struct cmd_find_state *target = cmdq_get_target(item);
1.5 nicm 76: struct cmd_if_shell_data *cdata;
1.80 nicm 77: struct cmdq_item *new_item;
78: char *shellcmd;
1.74 nicm 79: struct client *tc = cmdq_get_target_client(item);
1.68 nicm 80: struct session *s = target->s;
1.80 nicm 81: struct cmd_list *cmdlist = NULL;
1.77 nicm 82: u_int count = args_count(args);
1.41 nicm 83:
1.77 nicm 84: shellcmd = format_single_from_target(item, args_string(args, 0));
1.27 nicm 85: if (args_has(args, 'F')) {
86: if (*shellcmd != '0' && *shellcmd != '\0')
1.80 nicm 87: cmdlist = args_make_commands_now(self, item, 1);
1.77 nicm 88: else if (count == 3)
1.80 nicm 89: cmdlist = args_make_commands_now(self, item, 2);
90: else {
91: free(shellcmd);
92: return (CMD_RETURN_NORMAL);
93: }
1.35 nicm 94: free(shellcmd);
1.80 nicm 95: if (cmdlist == NULL)
1.27 nicm 96: return (CMD_RETURN_ERROR);
1.80 nicm 97: new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
98: cmdq_insert_after(item, new_item);
1.27 nicm 99: return (CMD_RETURN_NORMAL);
100: }
1.5 nicm 101:
1.44 nicm 102: cdata = xcalloc(1, sizeof *cdata);
1.30 nicm 103:
1.80 nicm 104: cdata->cmd_if = args_make_commands_now(self, item, 1);
105: if (cdata->cmd_if == NULL)
106: return (CMD_RETURN_ERROR);
107: if (count == 3) {
108: cdata->cmd_else = args_make_commands_now(self, item, 2);
109: if (cdata->cmd_else == NULL)
110: return (CMD_RETURN_ERROR);
111: }
1.30 nicm 112:
1.65 nicm 113: if (!args_has(args, 'b'))
1.68 nicm 114: cdata->client = cmdq_get_client(item);
1.65 nicm 115: else
1.74 nicm 116: cdata->client = tc;
1.54 nicm 117: if (cdata->client != NULL)
118: cdata->client->references++;
1.5 nicm 119:
1.47 nicm 120: if (!args_has(args, 'b'))
1.48 nicm 121: cdata->item = item;
1.61 nicm 122:
1.75 nicm 123: if (job_run(shellcmd, 0, NULL, s,
1.68 nicm 124: server_client_get_cwd(cmdq_get_client(item), s), NULL,
1.66 nicm 125: cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
126: -1) == NULL) {
1.60 nicm 127: cmdq_error(item, "failed to run command: %s", shellcmd);
128: free(shellcmd);
129: free(cdata);
130: return (CMD_RETURN_ERROR);
131: }
1.19 nicm 132: free(shellcmd);
1.1 nicm 133:
1.47 nicm 134: if (args_has(args, 'b'))
1.20 nicm 135: return (CMD_RETURN_NORMAL);
136: return (CMD_RETURN_WAIT);
1.1 nicm 137: }
138:
1.45 nicm 139: static void
1.5 nicm 140: cmd_if_shell_callback(struct job *job)
1.1 nicm 141: {
1.59 nicm 142: struct cmd_if_shell_data *cdata = job_get_data(job);
1.47 nicm 143: struct client *c = cdata->client;
1.80 nicm 144: struct cmdq_item *item = cdata->item, *new_item;
145: struct cmd_list *cmdlist;
1.59 nicm 146: int status;
1.20 nicm 147:
1.59 nicm 148: status = job_get_status(job);
149: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
1.80 nicm 150: cmdlist = cdata->cmd_else;
1.20 nicm 151: else
1.80 nicm 152: cmdlist = cdata->cmd_if;
153: if (cmdlist == NULL)
1.47 nicm 154: goto out;
1.20 nicm 155:
1.80 nicm 156: if (item == NULL) {
157: new_item = cmdq_get_command(cmdlist, NULL);
158: cmdq_append(c, new_item);
159: } else {
160: new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
161: cmdq_insert_after(item, new_item);
1.47 nicm 162: }
1.25 nicm 163:
1.47 nicm 164: out:
1.48 nicm 165: if (cdata->item != NULL)
1.64 nicm 166: cmdq_continue(cdata->item);
1.20 nicm 167: }
168:
1.45 nicm 169: static void
1.5 nicm 170: cmd_if_shell_free(void *data)
1.1 nicm 171: {
1.5 nicm 172: struct cmd_if_shell_data *cdata = data;
1.1 nicm 173:
1.54 nicm 174: if (cdata->client != NULL)
175: server_client_unref(cdata->client);
1.1 nicm 176:
1.80 nicm 177: if (cdata->cmd_else != NULL)
178: cmd_list_free(cdata->cmd_else);
179: cmd_list_free(cdata->cmd_if);
1.61 nicm 180:
1.15 nicm 181: free(cdata);
1.1 nicm 182: }
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