1/* $OpenBSD: cmd-source-file.c,v 1.54 2023/09/15 06:31:49 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 = { "t:Fnqv", 1, -1, NULL },
40	.usage = "[-Fnqv] " CMD_TARGET_PANE_USAGE " path ...",
41
42	.target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
43
44	.flags = 0,
45	.exec = cmd_source_file_exec
46};
47
48struct cmd_source_file_data {
49	struct cmdq_item	 *item;
50	int			  flags;
51
52	struct cmdq_item	 *after;
53	enum cmd_retval		  retval;
54
55	u_int			  current;
56	char			**files;
57	u_int			  nfiles;
58};
59
60static enum cmd_retval
61cmd_source_file_complete_cb(struct cmdq_item *item, __unused void *data)
62{
63	cfg_print_causes(item);
64	return (CMD_RETURN_NORMAL);
65}
66
67static void
68cmd_source_file_complete(struct client *c, struct cmd_source_file_data *cdata)
69{
70	struct cmdq_item	*new_item;
71	u_int			 i;
72
73	if (cfg_finished) {
74		if (cdata->retval == CMD_RETURN_ERROR &&
75		    c != NULL &&
76		    c->session == NULL)
77			c->retval = 1;
78		new_item = cmdq_get_callback(cmd_source_file_complete_cb, NULL);
79		cmdq_insert_after(cdata->after, new_item);
80	}
81
82	for (i = 0; i < cdata->nfiles; i++)
83		free(cdata->files[i]);
84	free(cdata->files);
85	free(cdata);
86}
87
88static void
89cmd_source_file_done(struct client *c, const char *path, int error,
90    int closed, struct evbuffer *buffer, void *data)
91{
92	struct cmd_source_file_data	*cdata = data;
93	struct cmdq_item		*item = cdata->item;
94	void				*bdata = EVBUFFER_DATA(buffer);
95	size_t				 bsize = EVBUFFER_LENGTH(buffer);
96	u_int				 n;
97	struct cmdq_item		*new_item;
98	struct cmd_find_state		*target = cmdq_get_target(item);
99
100	if (!closed)
101		return;
102
103	if (error != 0)
104		cmdq_error(item, "%s: %s", path, strerror(error));
105	else if (bsize != 0) {
106		if (load_cfg_from_buffer(bdata, bsize, path, c, cdata->after,
107		    target, cdata->flags, &new_item) < 0)
108			cdata->retval = CMD_RETURN_ERROR;
109		else if (new_item != NULL)
110			cdata->after = new_item;
111	}
112
113	n = ++cdata->current;
114	if (n < cdata->nfiles)
115		file_read(c, cdata->files[n], cmd_source_file_done, cdata);
116	else {
117		cmd_source_file_complete(c, cdata);
118		cmdq_continue(item);
119	}
120}
121
122static void
123cmd_source_file_add(struct cmd_source_file_data *cdata, const char *path)
124{
125	log_debug("%s: %s", __func__, path);
126	cdata->files = xreallocarray(cdata->files, cdata->nfiles + 1,
127	    sizeof *cdata->files);
128	cdata->files[cdata->nfiles++] = xstrdup(path);
129}
130
131static enum cmd_retval
132cmd_source_file_exec(struct cmd *self, struct cmdq_item *item)
133{
134	struct args			*args = cmd_get_args(self);
135	struct cmd_source_file_data	*cdata;
136	struct client			*c = cmdq_get_client(item);
137	enum cmd_retval			 retval = CMD_RETURN_NORMAL;
138	char				*pattern, *cwd, *expanded = NULL;
139	const char			*path, *error;
140	glob_t				 g;
141	int				 result;
142	u_int				 i, j;
143
144	cdata = xcalloc(1, sizeof *cdata);
145	cdata->item = item;
146
147	if (args_has(args, 'q'))
148		cdata->flags |= CMD_PARSE_QUIET;
149	if (args_has(args, 'n'))
150		cdata->flags |= CMD_PARSE_PARSEONLY;
151	if (args_has(args, 'v'))
152		cdata->flags |= CMD_PARSE_VERBOSE;
153
154	utf8_stravis(&cwd, server_client_get_cwd(c, NULL), VIS_GLOB);
155
156	for (i = 0; i < args_count(args); i++) {
157		path = args_string(args, i);
158		if (args_has(args, 'F')) {
159			free(expanded);
160			expanded = format_single_from_target(item, path);
161			path = expanded;
162		}
163		if (strcmp(path, "-") == 0) {
164			cmd_source_file_add(cdata, "-");
165			continue;
166		}
167
168		if (*path == '/')
169			pattern = xstrdup(path);
170		else
171			xasprintf(&pattern, "%s/%s", cwd, path);
172		log_debug("%s: %s", __func__, pattern);
173
174		if ((result = glob(pattern, 0, NULL, &g)) != 0) {
175			if (result != GLOB_NOMATCH ||
176			    (~cdata->flags & CMD_PARSE_QUIET)) {
177				if (result == GLOB_NOMATCH)
178					error = strerror(ENOENT);
179				else if (result == GLOB_NOSPACE)
180					error = strerror(ENOMEM);
181				else
182					error = strerror(EINVAL);
183				cmdq_error(item, "%s: %s", path, error);
184				retval = CMD_RETURN_ERROR;
185			}
186			globfree(&g);
187			free(pattern);
188			continue;
189		}
190		free(pattern);
191
192		for (j = 0; j < g.gl_pathc; j++)
193			cmd_source_file_add(cdata, g.gl_pathv[j]);
194		globfree(&g);
195	}
196	free(expanded);
197
198	cdata->after = item;
199	cdata->retval = retval;
200
201	if (cdata->nfiles != 0) {
202		file_read(c, cdata->files[0], cmd_source_file_done, cdata);
203		retval = CMD_RETURN_WAIT;
204	} else
205		cmd_source_file_complete(c, cdata);
206
207	free(cwd);
208	return (retval);
209}
210