Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.77
1.77 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.76 2021/08/13 06:50:42 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;
1.77 ! nicm 68: char *shellcmd, *error;
! 69: const char *cmd = NULL, *file;
1.74 nicm 70: struct client *tc = cmdq_get_target_client(item);
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;
1.77 ! nicm 74: u_int count = args_count(args);
1.41 nicm 75:
1.77 ! nicm 76: shellcmd = format_single_from_target(item, args_string(args, 0));
1.27 nicm 77: if (args_has(args, 'F')) {
78: if (*shellcmd != '0' && *shellcmd != '\0')
1.77 ! nicm 79: cmd = args_string(args, 1);
! 80: else if (count == 3)
! 81: cmd = args_string(args, 2);
1.35 nicm 82: free(shellcmd);
1.27 nicm 83: if (cmd == NULL)
84: return (CMD_RETURN_NORMAL);
1.61 nicm 85:
86: memset(&pi, 0, sizeof pi);
1.67 nicm 87: cmd_get_source(self, &pi.file, &pi.line);
1.61 nicm 88: pi.item = item;
1.74 nicm 89: pi.c = tc;
1.68 nicm 90: cmd_find_copy_state(&pi.fs, target);
1.61 nicm 91:
1.73 nicm 92: status = cmd_parse_and_insert(cmd, &pi, item, state, &error);
93: if (status == CMD_PARSE_ERROR) {
94: cmdq_error(item, "%s", error);
95: free(error);
1.27 nicm 96: return (CMD_RETURN_ERROR);
97: }
98: return (CMD_RETURN_NORMAL);
99: }
1.5 nicm 100:
1.44 nicm 101: cdata = xcalloc(1, sizeof *cdata);
1.30 nicm 102:
1.77 ! nicm 103: cdata->cmd_if = xstrdup(args_string(args, 1));
! 104: if (count == 3)
! 105: cdata->cmd_else = xstrdup(args_string(args, 2));
1.30 nicm 106:
1.65 nicm 107: if (!args_has(args, 'b'))
1.68 nicm 108: cdata->client = cmdq_get_client(item);
1.65 nicm 109: else
1.74 nicm 110: cdata->client = tc;
1.54 nicm 111: if (cdata->client != NULL)
112: cdata->client->references++;
1.5 nicm 113:
1.47 nicm 114: if (!args_has(args, 'b'))
1.48 nicm 115: cdata->item = item;
1.61 nicm 116:
1.67 nicm 117: cmd_get_source(self, &file, &cdata->input.line);
118: if (file != NULL)
119: cdata->input.file = xstrdup(file);
1.74 nicm 120: cdata->input.c = tc;
1.61 nicm 121: if (cdata->input.c != NULL)
122: cdata->input.c->references++;
1.68 nicm 123: cmd_find_copy_state(&cdata->input.fs, target);
1.5 nicm 124:
1.75 nicm 125: if (job_run(shellcmd, 0, NULL, s,
1.68 nicm 126: server_client_get_cwd(cmdq_get_client(item), s), NULL,
1.66 nicm 127: cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
128: -1) == NULL) {
1.60 nicm 129: cmdq_error(item, "failed to run command: %s", shellcmd);
130: free(shellcmd);
131: free(cdata);
132: return (CMD_RETURN_ERROR);
133: }
1.19 nicm 134: free(shellcmd);
1.1 nicm 135:
1.47 nicm 136: if (args_has(args, 'b'))
1.20 nicm 137: return (CMD_RETURN_NORMAL);
138: return (CMD_RETURN_WAIT);
1.1 nicm 139: }
140:
1.45 nicm 141: static void
1.5 nicm 142: cmd_if_shell_callback(struct job *job)
1.1 nicm 143: {
1.59 nicm 144: struct cmd_if_shell_data *cdata = job_get_data(job);
1.47 nicm 145: struct client *c = cdata->client;
1.62 nicm 146: struct cmdq_item *new_item = NULL;
1.72 nicm 147: struct cmdq_state *new_state = NULL;
1.61 nicm 148: char *cmd;
1.59 nicm 149: int status;
1.61 nicm 150: struct cmd_parse_result *pr;
1.20 nicm 151:
1.59 nicm 152: status = job_get_status(job);
153: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
1.13 nicm 154: cmd = cdata->cmd_else;
1.20 nicm 155: else
1.13 nicm 156: cmd = cdata->cmd_if;
1.20 nicm 157: if (cmd == NULL)
1.47 nicm 158: goto out;
1.20 nicm 159:
1.61 nicm 160: pr = cmd_parse_from_string(cmd, &cdata->input);
161: switch (pr->status) {
162: case CMD_PARSE_EMPTY:
163: break;
164: case CMD_PARSE_ERROR:
1.62 nicm 165: if (cdata->item != NULL)
166: cmdq_error(cdata->item, "%s", pr->error);
1.61 nicm 167: free(pr->error);
168: break;
169: case CMD_PARSE_SUCCESS:
1.72 nicm 170: if (cdata->item == NULL)
171: new_state = cmdq_new_state(NULL, NULL, 0);
172: else
173: new_state = cmdq_get_state(cdata->item);
174: new_item = cmdq_get_command(pr->cmdlist, new_state);
175: if (cdata->item == NULL)
176: cmdq_free_state(new_state);
1.61 nicm 177: cmd_list_free(pr->cmdlist);
178: break;
1.1 nicm 179: }
1.48 nicm 180: if (new_item != NULL) {
181: if (cdata->item == NULL)
182: cmdq_append(c, new_item);
1.47 nicm 183: else
1.48 nicm 184: cmdq_insert_after(cdata->item, new_item);
1.47 nicm 185: }
1.25 nicm 186:
1.47 nicm 187: out:
1.48 nicm 188: if (cdata->item != NULL)
1.64 nicm 189: cmdq_continue(cdata->item);
1.20 nicm 190: }
191:
1.45 nicm 192: static void
1.5 nicm 193: cmd_if_shell_free(void *data)
1.1 nicm 194: {
1.5 nicm 195: struct cmd_if_shell_data *cdata = data;
1.1 nicm 196:
1.54 nicm 197: if (cdata->client != NULL)
198: server_client_unref(cdata->client);
1.1 nicm 199:
1.15 nicm 200: free(cdata->cmd_else);
201: free(cdata->cmd_if);
1.44 nicm 202:
1.61 nicm 203: if (cdata->input.c != NULL)
204: server_client_unref(cdata->input.c);
205: free((void *)cdata->input.file);
206:
1.15 nicm 207: free(cdata);
1.1 nicm 208: }
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