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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/tmux/cmd-if-shell.c	Lines:	0	76	0.0 %
Date:	2017-11-07	Branches:	0	48	0.0 %


/* $OpenBSD: cmd-if-shell.c,v 1.56 2017/04/25 11:49:35 nicm Exp $ */

/*
 * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
 * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/wait.h>

#include <stdlib.h>
#include <string.h>

#include "tmux.h"

/*
 * Executes a tmux command if a shell command returns true or false.
 */

static enum cmd_retval	cmd_if_shell_exec(struct cmd *, struct cmdq_item *);

static void		cmd_if_shell_callback(struct job *);
static void		cmd_if_shell_free(void *);

const struct cmd_entry cmd_if_shell_entry = {
	.name = "if-shell",
	.alias = "if",

	.args = { "bFt:", 2, 3 },
	.usage = "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command "
		 "[command]",

	.target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },

	.flags = 0,
	.exec = cmd_if_shell_exec
};

struct cmd_if_shell_data {
	char			*file;
	u_int			 line;

	char			*cmd_if;
	char			*cmd_else;

	struct client		*client;
	struct cmdq_item	*item;
	struct mouse_event	 mouse;
};

static enum cmd_retval
cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
{
	struct args			*args = self->args;
	struct cmdq_shared		*shared = item->shared;
	struct cmd_if_shell_data	*cdata;
	char				*shellcmd, *cmd, *cause;
	struct cmd_list			*cmdlist;
	struct cmdq_item		*new_item;
	struct client			*c = cmd_find_client(item, NULL, 1);
	struct session			*s = item->target.s;
	struct winlink			*wl = item->target.wl;
	struct window_pane		*wp = item->target.wp;
	const char			*cwd;

	if (item->client != NULL && item->client->session == NULL)
		cwd = item->client->cwd;
	else if (s != NULL)
		cwd = s->cwd;
	else
		cwd = NULL;

	shellcmd = format_single(item, args->argv[0], c, s, wl, wp);
	if (args_has(args, 'F')) {
		cmd = NULL;
		if (*shellcmd != '0' && *shellcmd != '\0')
			cmd = args->argv[1];
		else if (args->argc == 3)
			cmd = args->argv[2];
		free(shellcmd);
		if (cmd == NULL)
			return (CMD_RETURN_NORMAL);
		cmdlist = cmd_string_parse(cmd, NULL, 0, &cause);
		if (cmdlist == NULL) {
			if (cause != NULL) {
				cmdq_error(item, "%s", cause);
				free(cause);
			}
			return (CMD_RETURN_ERROR);
		}
		new_item = cmdq_get_command(cmdlist, NULL, &shared->mouse, 0);
		cmdq_insert_after(item, new_item);
		cmd_list_free(cmdlist);
		return (CMD_RETURN_NORMAL);
	}

	cdata = xcalloc(1, sizeof *cdata);
	if (self->file != NULL) {
		cdata->file = xstrdup(self->file);
		cdata->line = self->line;
	}

	cdata->cmd_if = xstrdup(args->argv[1]);
	if (args->argc == 3)
		cdata->cmd_else = xstrdup(args->argv[2]);
	else
		cdata->cmd_else = NULL;

	cdata->client = item->client;
	if (cdata->client != NULL)
		cdata->client->references++;

	if (!args_has(args, 'b'))
		cdata->item = item;
	else
		cdata->item = NULL;
	memcpy(&cdata->mouse, &shared->mouse, sizeof cdata->mouse);

	job_run(shellcmd, s, cwd, NULL, cmd_if_shell_callback,
	    cmd_if_shell_free, cdata);
	free(shellcmd);

	if (args_has(args, 'b'))
		return (CMD_RETURN_NORMAL);
	return (CMD_RETURN_WAIT);
}

static void
cmd_if_shell_callback(struct job *job)
{
	struct cmd_if_shell_data	*cdata = job->data;
	struct client			*c = cdata->client;
	struct cmd_list			*cmdlist;
	struct cmdq_item		*new_item;
	char				*cause, *cmd, *file = cdata->file;
	u_int				 line = cdata->line;

	if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
		cmd = cdata->cmd_else;
	else
		cmd = cdata->cmd_if;
	if (cmd == NULL)
		goto out;

	cmdlist = cmd_string_parse(cmd, file, line, &cause);
	if (cmdlist == NULL) {
		if (cause != NULL && cdata->item != NULL)
			cmdq_error(cdata->item, "%s", cause);
		free(cause);
		new_item = NULL;
	} else {
		new_item = cmdq_get_command(cmdlist, NULL, &cdata->mouse, 0);
		cmd_list_free(cmdlist);
	}

	if (new_item != NULL) {
		if (cdata->item == NULL)
			cmdq_append(c, new_item);
		else
			cmdq_insert_after(cdata->item, new_item);
	}

out:
	if (cdata->item != NULL)
		cdata->item->flags &= ~CMDQ_WAITING;
}

static void
cmd_if_shell_free(void *data)
{
	struct cmd_if_shell_data	*cdata = data;

	if (cdata->client != NULL)
		server_client_unref(cdata->client);

	free(cdata->cmd_else);
	free(cdata->cmd_if);

	free(cdata->file);
	free(cdata);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: cmd-if-shell.c,v 1.56 2017/04/25 11:49:35 nicm Exp $ */
2
3			/*
4			* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
5			* Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
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>
21			#include <sys/wait.h>
22
23			#include <stdlib.h>
24			#include <string.h>
25
26			#include "tmux.h"
27
28			/*
29			* Executes a tmux command if a shell command returns true or false.
30			*/
31
32			static enum cmd_retval cmd_if_shell_exec(struct cmd , struct cmdq_item );
33
34			static void cmd_if_shell_callback(struct job *);
35			static void cmd_if_shell_free(void *);
36
37			const struct cmd_entry cmd_if_shell_entry = {
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
45			.target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
46
47			.flags = 0,
48			.exec = cmd_if_shell_exec
49			};
50
51			struct cmd_if_shell_data {
52			char *file;
53			u_int line;
54
55			char *cmd_if;
56			char *cmd_else;
57
58			struct client *client;
59			struct cmdq_item *item;
60			struct mouse_event mouse;
61			};
62
63			static enum cmd_retval
64			cmd_if_shell_exec(struct cmd self, struct cmdq_item item)
65			{
66			struct args *args = self->args;
67			struct cmdq_shared *shared = item->shared;
68			struct cmd_if_shell_data *cdata;
69			char shellcmd, cmd, *cause;
70			struct cmd_list *cmdlist;
71			struct cmdq_item *new_item;
72			struct client *c = cmd_find_client(item, NULL, 1);
73			struct session *s = item->target.s;
74			struct winlink *wl = item->target.wl;
75			struct window_pane *wp = item->target.wp;
76			const char *cwd;
77
78			if (item->client != NULL && item->client->session == NULL)
79			cwd = item->client->cwd;
80			else if (s != NULL)
81			cwd = s->cwd;
82			else
83			cwd = NULL;
84
85			shellcmd = format_single(item, args->argv[0], c, s, wl, wp);
86			if (args_has(args, 'F')) {
87			cmd = NULL;
88			if (shellcmd != '0' && shellcmd != '\0')
89			cmd = args->argv[1];
90			else if (args->argc == 3)
91			cmd = args->argv[2];
92			free(shellcmd);
93			if (cmd == NULL)
94			return (CMD_RETURN_NORMAL);
95			cmdlist = cmd_string_parse(cmd, NULL, 0, &cause);
96			if (cmdlist == NULL) {
97			if (cause != NULL) {
98			cmdq_error(item, "%s", cause);
99			free(cause);
100			}
101			return (CMD_RETURN_ERROR);
102			}
103			new_item = cmdq_get_command(cmdlist, NULL, &shared->mouse, 0);
104			cmdq_insert_after(item, new_item);
105			cmd_list_free(cmdlist);
106			return (CMD_RETURN_NORMAL);
107			}
108
109			cdata = xcalloc(1, sizeof *cdata);
110			if (self->file != NULL) {
111			cdata->file = xstrdup(self->file);
112			cdata->line = self->line;
113			}
114
115			cdata->cmd_if = xstrdup(args->argv[1]);
116			if (args->argc == 3)
117			cdata->cmd_else = xstrdup(args->argv[2]);
118			else
119			cdata->cmd_else = NULL;
120
121			cdata->client = item->client;
122			if (cdata->client != NULL)
123			cdata->client->references++;
124
125			if (!args_has(args, 'b'))
126			cdata->item = item;
127			else
128			cdata->item = NULL;
129			memcpy(&cdata->mouse, &shared->mouse, sizeof cdata->mouse);
130
131			job_run(shellcmd, s, cwd, NULL, cmd_if_shell_callback,
132			cmd_if_shell_free, cdata);
133			free(shellcmd);
134
135			if (args_has(args, 'b'))
136			return (CMD_RETURN_NORMAL);
137			return (CMD_RETURN_WAIT);
138			}
139
140			static void
141			cmd_if_shell_callback(struct job *job)
142			{
143			struct cmd_if_shell_data *cdata = job->data;
144			struct client *c = cdata->client;
145			struct cmd_list *cmdlist;
146			struct cmdq_item *new_item;
147			char cause, cmd, *file = cdata->file;
148			u_int line = cdata->line;
149
150			if (!WIFEXITED(job->status) \|\| WEXITSTATUS(job->status) != 0)
151			cmd = cdata->cmd_else;
152			else
153			cmd = cdata->cmd_if;
154			if (cmd == NULL)
155			goto out;
156
157			cmdlist = cmd_string_parse(cmd, file, line, &cause);
158			if (cmdlist == NULL) {
159			if (cause != NULL && cdata->item != NULL)
160			cmdq_error(cdata->item, "%s", cause);
161			free(cause);
162			new_item = NULL;
163			} else {
164			new_item = cmdq_get_command(cmdlist, NULL, &cdata->mouse, 0);
165			cmd_list_free(cmdlist);
166			}
167
168			if (new_item != NULL) {
169			if (cdata->item == NULL)
170			cmdq_append(c, new_item);
171			else
172			cmdq_insert_after(cdata->item, new_item);
173			}
174
175			out:
176			if (cdata->item != NULL)
177			cdata->item->flags &= ~CMDQ_WAITING;
178			}
179
180			static void
181			cmd_if_shell_free(void *data)
182			{
183			struct cmd_if_shell_data *cdata = data;
184
185			if (cdata->client != NULL)
186			server_client_unref(cdata->client);
187
188			free(cdata->cmd_else);
189			free(cdata->cmd_if);
190
191			free(cdata->file);
192			free(cdata);
193			}