Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.72
1.72 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.71 2020/04/13 14:46:04 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;
1.61 nicm 68: char *shellcmd, *cmd;
1.67 nicm 69: const char *file;
1.48 nicm 70: struct cmdq_item *new_item;
1.55 nicm 71: struct client *c = cmd_find_client(item, NULL, 1);
1.68 nicm 72: struct session *s = target->s;
1.61 nicm 73: struct cmd_parse_input pi;
74: struct cmd_parse_result *pr;
1.41 nicm 75:
1.68 nicm 76: shellcmd = format_single_from_target(item, args->argv[0], c);
1.27 nicm 77: if (args_has(args, 'F')) {
78: if (*shellcmd != '0' && *shellcmd != '\0')
79: cmd = args->argv[1];
80: else if (args->argc == 3)
81: cmd = args->argv[2];
1.61 nicm 82: else
83: cmd = NULL;
1.35 nicm 84: free(shellcmd);
1.27 nicm 85: if (cmd == NULL)
86: return (CMD_RETURN_NORMAL);
1.61 nicm 87:
88: memset(&pi, 0, sizeof pi);
1.67 nicm 89: cmd_get_source(self, &pi.file, &pi.line);
1.61 nicm 90: pi.item = item;
91: pi.c = c;
1.68 nicm 92: cmd_find_copy_state(&pi.fs, target);
1.61 nicm 93:
94: pr = cmd_parse_from_string(cmd, &pi);
95: switch (pr->status) {
96: case CMD_PARSE_EMPTY:
97: break;
98: case CMD_PARSE_ERROR:
99: cmdq_error(item, "%s", pr->error);
100: free(pr->error);
1.27 nicm 101: return (CMD_RETURN_ERROR);
1.61 nicm 102: case CMD_PARSE_SUCCESS:
1.72 ! nicm 103: new_item = cmdq_get_command(pr->cmdlist, state);
1.61 nicm 104: cmdq_insert_after(item, new_item);
105: cmd_list_free(pr->cmdlist);
106: break;
1.27 nicm 107: }
108: return (CMD_RETURN_NORMAL);
109: }
1.5 nicm 110:
1.44 nicm 111: cdata = xcalloc(1, sizeof *cdata);
1.30 nicm 112:
1.13 nicm 113: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 114: if (args->argc == 3)
115: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 116: else
117: cdata->cmd_else = NULL;
1.30 nicm 118:
1.65 nicm 119: if (!args_has(args, 'b'))
1.68 nicm 120: cdata->client = cmdq_get_client(item);
1.65 nicm 121: else
122: cdata->client = c;
1.54 nicm 123: if (cdata->client != NULL)
124: cdata->client->references++;
1.5 nicm 125:
1.47 nicm 126: if (!args_has(args, 'b'))
1.48 nicm 127: cdata->item = item;
1.47 nicm 128: else
1.48 nicm 129: cdata->item = NULL;
1.61 nicm 130:
131: memset(&cdata->input, 0, sizeof cdata->input);
1.67 nicm 132: cmd_get_source(self, &file, &cdata->input.line);
133: if (file != NULL)
134: cdata->input.file = xstrdup(file);
1.61 nicm 135: cdata->input.c = c;
136: if (cdata->input.c != NULL)
137: cdata->input.c->references++;
1.68 nicm 138: cmd_find_copy_state(&cdata->input.fs, target);
1.5 nicm 139:
1.68 nicm 140: if (job_run(shellcmd, s,
141: server_client_get_cwd(cmdq_get_client(item), s), NULL,
1.66 nicm 142: cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
143: -1) == NULL) {
1.60 nicm 144: cmdq_error(item, "failed to run command: %s", shellcmd);
145: free(shellcmd);
146: free(cdata);
147: return (CMD_RETURN_ERROR);
148: }
1.19 nicm 149: free(shellcmd);
1.1 nicm 150:
1.47 nicm 151: if (args_has(args, 'b'))
1.20 nicm 152: return (CMD_RETURN_NORMAL);
153: return (CMD_RETURN_WAIT);
1.1 nicm 154: }
155:
1.45 nicm 156: static void
1.5 nicm 157: cmd_if_shell_callback(struct job *job)
1.1 nicm 158: {
1.59 nicm 159: struct cmd_if_shell_data *cdata = job_get_data(job);
1.47 nicm 160: struct client *c = cdata->client;
1.62 nicm 161: struct cmdq_item *new_item = NULL;
1.72 ! nicm 162: struct cmdq_state *new_state = NULL;
1.61 nicm 163: char *cmd;
1.59 nicm 164: int status;
1.61 nicm 165: struct cmd_parse_result *pr;
1.20 nicm 166:
1.59 nicm 167: status = job_get_status(job);
168: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
1.13 nicm 169: cmd = cdata->cmd_else;
1.20 nicm 170: else
1.13 nicm 171: cmd = cdata->cmd_if;
1.20 nicm 172: if (cmd == NULL)
1.47 nicm 173: goto out;
1.20 nicm 174:
1.61 nicm 175: pr = cmd_parse_from_string(cmd, &cdata->input);
176: switch (pr->status) {
177: case CMD_PARSE_EMPTY:
178: break;
179: case CMD_PARSE_ERROR:
1.62 nicm 180: if (cdata->item != NULL)
181: cmdq_error(cdata->item, "%s", pr->error);
1.61 nicm 182: free(pr->error);
183: break;
184: case CMD_PARSE_SUCCESS:
1.72 ! nicm 185: if (cdata->item == NULL)
! 186: new_state = cmdq_new_state(NULL, NULL, 0);
! 187: else
! 188: new_state = cmdq_get_state(cdata->item);
! 189: new_item = cmdq_get_command(pr->cmdlist, new_state);
! 190: if (cdata->item == NULL)
! 191: cmdq_free_state(new_state);
1.61 nicm 192: cmd_list_free(pr->cmdlist);
193: break;
1.1 nicm 194: }
1.48 nicm 195: if (new_item != NULL) {
196: if (cdata->item == NULL)
197: cmdq_append(c, new_item);
1.47 nicm 198: else
1.48 nicm 199: cmdq_insert_after(cdata->item, new_item);
1.47 nicm 200: }
1.25 nicm 201:
1.47 nicm 202: out:
1.48 nicm 203: if (cdata->item != NULL)
1.64 nicm 204: cmdq_continue(cdata->item);
1.20 nicm 205: }
206:
1.45 nicm 207: static void
1.5 nicm 208: cmd_if_shell_free(void *data)
1.1 nicm 209: {
1.5 nicm 210: struct cmd_if_shell_data *cdata = data;
1.1 nicm 211:
1.54 nicm 212: if (cdata->client != NULL)
213: server_client_unref(cdata->client);
1.1 nicm 214:
1.15 nicm 215: free(cdata->cmd_else);
216: free(cdata->cmd_if);
1.44 nicm 217:
1.61 nicm 218: if (cdata->input.c != NULL)
219: server_client_unref(cdata->input.c);
220: free((void *)cdata->input.file);
221:
1.15 nicm 222: free(cdata);
1.1 nicm 223: }
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