Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.73
1.73 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.72 2020/04/13 15:55:51 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 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:
41: .args = { "bFt:", 2, 3 },
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 {
1.61 nicm 52: struct cmd_parse_input input;
1.44 nicm 53:
1.30 nicm 54: char *cmd_if;
55: char *cmd_else;
56:
1.47 nicm 57: struct client *client;
1.48 nicm 58: struct cmdq_item *item;
1.5 nicm 59: };
1.1 nicm 60:
1.45 nicm 61: static enum cmd_retval
1.48 nicm 62: cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 63: {
1.67 nicm 64: struct args *args = cmd_get_args(self);
1.68 nicm 65: struct cmd_find_state *target = cmdq_get_target(item);
1.72 nicm 66: struct cmdq_state *state = cmdq_get_state(item);
1.5 nicm 67: struct cmd_if_shell_data *cdata;
1.73 ! nicm 68: char *shellcmd, *cmd, *error;
1.67 nicm 69: const char *file;
1.55 nicm 70: struct client *c = cmd_find_client(item, NULL, 1);
1.68 nicm 71: struct session *s = target->s;
1.61 nicm 72: struct cmd_parse_input pi;
1.73 ! nicm 73: enum cmd_parse_status status;
1.41 nicm 74:
1.68 nicm 75: shellcmd = format_single_from_target(item, args->argv[0], c);
1.27 nicm 76: if (args_has(args, 'F')) {
77: if (*shellcmd != '0' && *shellcmd != '\0')
78: cmd = args->argv[1];
79: else if (args->argc == 3)
80: cmd = args->argv[2];
1.61 nicm 81: else
82: cmd = NULL;
1.35 nicm 83: free(shellcmd);
1.27 nicm 84: if (cmd == NULL)
85: return (CMD_RETURN_NORMAL);
1.61 nicm 86:
87: memset(&pi, 0, sizeof pi);
1.67 nicm 88: cmd_get_source(self, &pi.file, &pi.line);
1.61 nicm 89: pi.item = item;
90: pi.c = c;
1.68 nicm 91: cmd_find_copy_state(&pi.fs, target);
1.61 nicm 92:
1.73 ! nicm 93: status = cmd_parse_and_insert(cmd, &pi, item, state, &error);
! 94: if (status == CMD_PARSE_ERROR) {
! 95: cmdq_error(item, "%s", error);
! 96: free(error);
1.27 nicm 97: return (CMD_RETURN_ERROR);
98: }
99: return (CMD_RETURN_NORMAL);
100: }
1.5 nicm 101:
1.44 nicm 102: cdata = xcalloc(1, sizeof *cdata);
1.30 nicm 103:
1.13 nicm 104: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 105: if (args->argc == 3)
106: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 107: else
108: cdata->cmd_else = NULL;
1.30 nicm 109:
1.65 nicm 110: if (!args_has(args, 'b'))
1.68 nicm 111: cdata->client = cmdq_get_client(item);
1.65 nicm 112: else
113: cdata->client = c;
1.54 nicm 114: if (cdata->client != NULL)
115: cdata->client->references++;
1.5 nicm 116:
1.47 nicm 117: if (!args_has(args, 'b'))
1.48 nicm 118: cdata->item = item;
1.47 nicm 119: else
1.48 nicm 120: cdata->item = NULL;
1.61 nicm 121:
122: memset(&cdata->input, 0, sizeof cdata->input);
1.67 nicm 123: cmd_get_source(self, &file, &cdata->input.line);
124: if (file != NULL)
125: cdata->input.file = xstrdup(file);
1.61 nicm 126: cdata->input.c = c;
127: if (cdata->input.c != NULL)
128: cdata->input.c->references++;
1.68 nicm 129: cmd_find_copy_state(&cdata->input.fs, target);
1.5 nicm 130:
1.68 nicm 131: if (job_run(shellcmd, s,
132: server_client_get_cwd(cmdq_get_client(item), s), NULL,
1.66 nicm 133: cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
134: -1) == NULL) {
1.60 nicm 135: cmdq_error(item, "failed to run command: %s", shellcmd);
136: free(shellcmd);
137: free(cdata);
138: return (CMD_RETURN_ERROR);
139: }
1.19 nicm 140: free(shellcmd);
1.1 nicm 141:
1.47 nicm 142: if (args_has(args, 'b'))
1.20 nicm 143: return (CMD_RETURN_NORMAL);
144: return (CMD_RETURN_WAIT);
1.1 nicm 145: }
146:
1.45 nicm 147: static void
1.5 nicm 148: cmd_if_shell_callback(struct job *job)
1.1 nicm 149: {
1.59 nicm 150: struct cmd_if_shell_data *cdata = job_get_data(job);
1.47 nicm 151: struct client *c = cdata->client;
1.62 nicm 152: struct cmdq_item *new_item = NULL;
1.72 nicm 153: struct cmdq_state *new_state = NULL;
1.61 nicm 154: char *cmd;
1.59 nicm 155: int status;
1.61 nicm 156: struct cmd_parse_result *pr;
1.20 nicm 157:
1.59 nicm 158: status = job_get_status(job);
159: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
1.13 nicm 160: cmd = cdata->cmd_else;
1.20 nicm 161: else
1.13 nicm 162: cmd = cdata->cmd_if;
1.20 nicm 163: if (cmd == NULL)
1.47 nicm 164: goto out;
1.20 nicm 165:
1.61 nicm 166: pr = cmd_parse_from_string(cmd, &cdata->input);
167: switch (pr->status) {
168: case CMD_PARSE_EMPTY:
169: break;
170: case CMD_PARSE_ERROR:
1.62 nicm 171: if (cdata->item != NULL)
172: cmdq_error(cdata->item, "%s", pr->error);
1.61 nicm 173: free(pr->error);
174: break;
175: case CMD_PARSE_SUCCESS:
1.72 nicm 176: if (cdata->item == NULL)
177: new_state = cmdq_new_state(NULL, NULL, 0);
178: else
179: new_state = cmdq_get_state(cdata->item);
180: new_item = cmdq_get_command(pr->cmdlist, new_state);
181: if (cdata->item == NULL)
182: cmdq_free_state(new_state);
1.61 nicm 183: cmd_list_free(pr->cmdlist);
184: break;
1.1 nicm 185: }
1.48 nicm 186: if (new_item != NULL) {
187: if (cdata->item == NULL)
188: cmdq_append(c, new_item);
1.47 nicm 189: else
1.48 nicm 190: cmdq_insert_after(cdata->item, new_item);
1.47 nicm 191: }
1.25 nicm 192:
1.47 nicm 193: out:
1.48 nicm 194: if (cdata->item != NULL)
1.64 nicm 195: cmdq_continue(cdata->item);
1.20 nicm 196: }
197:
1.45 nicm 198: static void
1.5 nicm 199: cmd_if_shell_free(void *data)
1.1 nicm 200: {
1.5 nicm 201: struct cmd_if_shell_data *cdata = data;
1.1 nicm 202:
1.54 nicm 203: if (cdata->client != NULL)
204: server_client_unref(cdata->client);
1.1 nicm 205:
1.15 nicm 206: free(cdata->cmd_else);
207: free(cdata->cmd_if);
1.44 nicm 208:
1.61 nicm 209: if (cdata->input.c != NULL)
210: server_client_unref(cdata->input.c);
211: free((void *)cdata->input.file);
212:
1.15 nicm 213: free(cdata);
1.1 nicm 214: }
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