Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.69
1.69 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.68 2020/04/13 10:59:58 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;
1.30 nicm 59: struct mouse_event mouse;
1.5 nicm 60: };
1.1 nicm 61:
1.45 nicm 62: static enum cmd_retval
1.48 nicm 63: cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 64: {
1.67 nicm 65: struct args *args = cmd_get_args(self);
1.68 nicm 66: struct cmdq_shared *shared = cmdq_get_shared(item);
67: struct cmd_find_state *target = cmdq_get_target(item);
1.69 ! nicm 68: struct mouse_event *m = &shared->event.m;
1.5 nicm 69: struct cmd_if_shell_data *cdata;
1.61 nicm 70: char *shellcmd, *cmd;
1.67 nicm 71: const char *file;
1.48 nicm 72: struct cmdq_item *new_item;
1.55 nicm 73: struct client *c = cmd_find_client(item, NULL, 1);
1.68 nicm 74: struct session *s = target->s;
1.61 nicm 75: struct cmd_parse_input pi;
76: struct cmd_parse_result *pr;
1.41 nicm 77:
1.68 nicm 78: shellcmd = format_single_from_target(item, args->argv[0], c);
1.27 nicm 79: if (args_has(args, 'F')) {
80: if (*shellcmd != '0' && *shellcmd != '\0')
81: cmd = args->argv[1];
82: else if (args->argc == 3)
83: cmd = args->argv[2];
1.61 nicm 84: else
85: cmd = NULL;
1.35 nicm 86: free(shellcmd);
1.27 nicm 87: if (cmd == NULL)
88: return (CMD_RETURN_NORMAL);
1.61 nicm 89:
90: memset(&pi, 0, sizeof pi);
1.67 nicm 91: cmd_get_source(self, &pi.file, &pi.line);
1.61 nicm 92: pi.item = item;
93: pi.c = c;
1.68 nicm 94: cmd_find_copy_state(&pi.fs, target);
1.61 nicm 95:
96: pr = cmd_parse_from_string(cmd, &pi);
97: switch (pr->status) {
98: case CMD_PARSE_EMPTY:
99: break;
100: case CMD_PARSE_ERROR:
101: cmdq_error(item, "%s", pr->error);
102: free(pr->error);
1.27 nicm 103: return (CMD_RETURN_ERROR);
1.61 nicm 104: case CMD_PARSE_SUCCESS:
1.68 nicm 105: new_item = cmdq_get_command(pr->cmdlist, target, m, 0);
1.61 nicm 106: cmdq_insert_after(item, new_item);
107: cmd_list_free(pr->cmdlist);
108: break;
1.27 nicm 109: }
110: return (CMD_RETURN_NORMAL);
111: }
1.5 nicm 112:
1.44 nicm 113: cdata = xcalloc(1, sizeof *cdata);
1.30 nicm 114:
1.13 nicm 115: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 116: if (args->argc == 3)
117: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 118: else
119: cdata->cmd_else = NULL;
1.61 nicm 120: memcpy(&cdata->mouse, m, sizeof cdata->mouse);
1.30 nicm 121:
1.65 nicm 122: if (!args_has(args, 'b'))
1.68 nicm 123: cdata->client = cmdq_get_client(item);
1.65 nicm 124: else
125: cdata->client = c;
1.54 nicm 126: if (cdata->client != NULL)
127: cdata->client->references++;
1.5 nicm 128:
1.47 nicm 129: if (!args_has(args, 'b'))
1.48 nicm 130: cdata->item = item;
1.47 nicm 131: else
1.48 nicm 132: cdata->item = NULL;
1.61 nicm 133:
134: memset(&cdata->input, 0, sizeof cdata->input);
1.67 nicm 135: cmd_get_source(self, &file, &cdata->input.line);
136: if (file != NULL)
137: cdata->input.file = xstrdup(file);
1.61 nicm 138: cdata->input.c = c;
139: if (cdata->input.c != NULL)
140: cdata->input.c->references++;
1.68 nicm 141: cmd_find_copy_state(&cdata->input.fs, target);
1.5 nicm 142:
1.68 nicm 143: if (job_run(shellcmd, s,
144: server_client_get_cwd(cmdq_get_client(item), s), NULL,
1.66 nicm 145: cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
146: -1) == NULL) {
1.60 nicm 147: cmdq_error(item, "failed to run command: %s", shellcmd);
148: free(shellcmd);
149: free(cdata);
150: return (CMD_RETURN_ERROR);
151: }
1.19 nicm 152: free(shellcmd);
1.1 nicm 153:
1.47 nicm 154: if (args_has(args, 'b'))
1.20 nicm 155: return (CMD_RETURN_NORMAL);
156: return (CMD_RETURN_WAIT);
1.1 nicm 157: }
158:
1.45 nicm 159: static void
1.5 nicm 160: cmd_if_shell_callback(struct job *job)
1.1 nicm 161: {
1.59 nicm 162: struct cmd_if_shell_data *cdata = job_get_data(job);
1.47 nicm 163: struct client *c = cdata->client;
1.61 nicm 164: struct mouse_event *m = &cdata->mouse;
1.62 nicm 165: struct cmdq_item *new_item = NULL;
1.61 nicm 166: char *cmd;
1.59 nicm 167: int status;
1.61 nicm 168: struct cmd_parse_result *pr;
1.20 nicm 169:
1.59 nicm 170: status = job_get_status(job);
171: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
1.13 nicm 172: cmd = cdata->cmd_else;
1.20 nicm 173: else
1.13 nicm 174: cmd = cdata->cmd_if;
1.20 nicm 175: if (cmd == NULL)
1.47 nicm 176: goto out;
1.20 nicm 177:
1.61 nicm 178: pr = cmd_parse_from_string(cmd, &cdata->input);
179: switch (pr->status) {
180: case CMD_PARSE_EMPTY:
181: break;
182: case CMD_PARSE_ERROR:
1.62 nicm 183: if (cdata->item != NULL)
184: cmdq_error(cdata->item, "%s", pr->error);
1.61 nicm 185: free(pr->error);
186: break;
187: case CMD_PARSE_SUCCESS:
188: new_item = cmdq_get_command(pr->cmdlist, NULL, m, 0);
189: cmd_list_free(pr->cmdlist);
190: break;
1.1 nicm 191: }
1.48 nicm 192: if (new_item != NULL) {
193: if (cdata->item == NULL)
194: cmdq_append(c, new_item);
1.47 nicm 195: else
1.48 nicm 196: cmdq_insert_after(cdata->item, new_item);
1.47 nicm 197: }
1.25 nicm 198:
1.47 nicm 199: out:
1.48 nicm 200: if (cdata->item != NULL)
1.64 nicm 201: cmdq_continue(cdata->item);
1.20 nicm 202: }
203:
1.45 nicm 204: static void
1.5 nicm 205: cmd_if_shell_free(void *data)
1.1 nicm 206: {
1.5 nicm 207: struct cmd_if_shell_data *cdata = data;
1.1 nicm 208:
1.54 nicm 209: if (cdata->client != NULL)
210: server_client_unref(cdata->client);
1.1 nicm 211:
1.15 nicm 212: free(cdata->cmd_else);
213: free(cdata->cmd_if);
1.44 nicm 214:
1.61 nicm 215: if (cdata->input.c != NULL)
216: server_client_unref(cdata->input.c);
217: free((void *)cdata->input.file);
218:
1.15 nicm 219: free(cdata);
1.1 nicm 220: }
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