cmd-source-file.c revision 1.50 
1/* $OpenBSD: cmd-source-file.c,v 1.50 2021/08/20 19:50:17 nicm Exp $ */
2
3/*
4 * Copyright (c) 2008 Tiago Cunha <me@tiagocunha.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <sys/types.h>
20
21#include <errno.h>
22#include <glob.h>
23#include <stdlib.h>
24#include <string.h>
25#include <vis.h>
26
27#include "tmux.h"
28
29/*
30 * Sources a configuration file.
31 */
32
33static enum cmd_retval	cmd_source_file_exec(struct cmd *, struct cmdq_item *);
34
35const struct cmd_entry cmd_source_file_entry = {
36	.name = "source-file",
37	.alias = "source",
38
39	.args = { "Fnqv", 1, -1 },
40	.usage = "[-Fnqv] path ...",
41
42	.flags = 0,
43	.exec = cmd_source_file_exec
44};
45
46struct cmd_source_file_data {
47	struct cmdq_item	 *item;
48	int			  flags;
49
50	struct cmdq_item	 *after;
51	enum cmd_retval		  retval;
52
53	u_int			  current;
54	char			**files;
55	u_int			  nfiles;
56};
57
58static enum cmd_retval
59cmd_source_file_complete_cb(struct cmdq_item *item, __unused void *data)
60{
61	cfg_print_causes(item);
62	return (CMD_RETURN_NORMAL);
63}
64
65static void
66cmd_source_file_complete(struct client *c, struct cmd_source_file_data *cdata)
67{
68	struct cmdq_item	*new_item;
69
70	if (cfg_finished) {
71		if (cdata->retval == CMD_RETURN_ERROR &&
72		    c != NULL &&
73		    c->session == NULL)
74			c->retval = 1;
75		new_item = cmdq_get_callback(cmd_source_file_complete_cb, NULL);
76		cmdq_insert_after(cdata->after, new_item);
77	}
78
79	free(cdata->files);
80	free(cdata);
81}
82
83static void
84cmd_source_file_done(struct client *c, const char *path, int error,
85    int closed, struct evbuffer *buffer, void *data)
86{
87	struct cmd_source_file_data	*cdata = data;
88	struct cmdq_item		*item = cdata->item;
89	void				*bdata = EVBUFFER_DATA(buffer);
90	size_t				 bsize = EVBUFFER_LENGTH(buffer);
91	u_int				 n;
92	struct cmdq_item		*new_item;
93
94	if (!closed)
95		return;
96
97	if (error != 0)
98		cmdq_error(item, "%s: %s", path, strerror(error));
99	else if (bsize != 0) {
100		if (load_cfg_from_buffer(bdata, bsize, path, c, cdata->after,
101		    cdata->flags, &new_item) < 0)
102			cdata->retval = CMD_RETURN_ERROR;
103		else if (new_item != NULL)
104			cdata->after = new_item;
105	}
106
107	n = ++cdata->current;
108	if (n < cdata->nfiles)
109		file_read(c, cdata->files[n], cmd_source_file_done, cdata);
110	else {
111		cmd_source_file_complete(c, cdata);
112		cmdq_continue(item);
113	}
114}
115
116static void
117cmd_source_file_add(struct cmd_source_file_data *cdata, const char *path)
118{
119	log_debug("%s: %s", __func__, path);
120	cdata->files = xreallocarray(cdata->files, cdata->nfiles + 1,
121	    sizeof *cdata->files);
122	cdata->files[cdata->nfiles++] = xstrdup(path);
123}
124
125static enum cmd_retval
126cmd_source_file_exec(struct cmd *self, struct cmdq_item *item)
127{
128	struct args			*args = cmd_get_args(self);
129	struct cmd_source_file_data	*cdata;
130	struct client			*c = cmdq_get_client(item);
131	enum cmd_retval			 retval = CMD_RETURN_NORMAL;
132	char				*pattern, *cwd, *expanded = NULL;
133	const char			*path, *error;
134	glob_t				 g;
135	int				 result;
136	u_int				 i, j;
137
138	cdata = xcalloc(1, sizeof *cdata);
139	cdata->item = item;
140
141	if (args_has(args, 'q'))
142		cdata->flags |= CMD_PARSE_QUIET;
143	if (args_has(args, 'n'))
144		cdata->flags |= CMD_PARSE_PARSEONLY;
145	if (args_has(args, 'v'))
146		cdata->flags |= CMD_PARSE_VERBOSE;
147
148	utf8_stravis(&cwd, server_client_get_cwd(c, NULL), VIS_GLOB);
149
150	for (i = 0; i < args_count(args); i++) {
151		path = args_string(args, i);
152		if (args_has(args, 'F')) {
153			free(expanded);
154			expanded = format_single_from_target(item, path);
155			path = expanded;
156		}
157		if (strcmp(path, "-") == 0) {
158			cmd_source_file_add(cdata, "-");
159			continue;
160		}
161
162		if (*path == '/')
163			pattern = xstrdup(path);
164		else
165			xasprintf(&pattern, "%s/%s", cwd, path);
166		log_debug("%s: %s", __func__, pattern);
167
168		if ((result = glob(pattern, 0, NULL, &g)) != 0) {
169			if (result != GLOB_NOMATCH ||
170			    (~cdata->flags & CMD_PARSE_QUIET)) {
171				if (result == GLOB_NOMATCH)
172					error = strerror(ENOENT);
173				else if (result == GLOB_NOSPACE)
174					error = strerror(ENOMEM);
175				else
176					error = strerror(EINVAL);
177				cmdq_error(item, "%s: %s", path, error);
178				retval = CMD_RETURN_ERROR;
179			}
180			free(pattern);
181			continue;
182		}
183		free(expanded);
184		free(pattern);
185
186		for (j = 0; j < g.gl_pathc; j++)
187			cmd_source_file_add(cdata, g.gl_pathv[j]);
188	}
189
190	cdata->after = item;
191	cdata->retval = retval;
192
193	if (cdata->nfiles != 0) {
194		file_read(c, cdata->files[0], cmd_source_file_done, cdata);
195		retval = CMD_RETURN_WAIT;
196	} else
197		cmd_source_file_complete(c, cdata);
198
199	free(cwd);
200	return (retval);
201}
202