1/*-
2 * Copyright (c) 1998-2004 Dag-Erling Co�dan Sm�rgrav
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "free2net.h"
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: src/lib/libfetch/file.c,v 1.16.6.1 2006/11/11 00:16:07 des Exp $");
33
34#include <sys/param.h>
35#include <sys/stat.h>
36
37#include <dirent.h>
38#include <stdio.h>
39#include <string.h>
40
41#include "fetch.h"
42#include "common.h"
43
44FILE *
45fetchXGetFile(struct url *u, struct url_stat *us, const char *flags)
46{
47	FILE *f;
48
49	if (us && fetchStatFile(u, us, flags) == -1)
50		return (NULL);
51
52	f = fopen(u->doc, "r");
53
54	if (f == NULL)
55		_fetch_syserr();
56
57	if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
58		fclose(f);
59		_fetch_syserr();
60	}
61
62	return (f);
63}
64
65FILE *
66fetchGetFile(struct url *u, const char *flags)
67{
68	return (fetchXGetFile(u, NULL, flags));
69}
70
71FILE *
72fetchPutFile(struct url *u, const char *flags)
73{
74	FILE *f;
75
76	if (CHECK_FLAG('a'))
77		f = fopen(u->doc, "a");
78	else
79		f = fopen(u->doc, "w+");
80
81	if (f == NULL)
82		_fetch_syserr();
83
84	if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
85		fclose(f);
86		_fetch_syserr();
87	}
88
89	return (f);
90}
91
92static int
93_fetch_stat_file(const char *fn, struct url_stat *us)
94{
95	struct stat sb;
96
97	us->size = -1;
98	us->atime = us->mtime = 0;
99	if (stat(fn, &sb) == -1) {
100		_fetch_syserr();
101		return (-1);
102	}
103	us->size = sb.st_size;
104	us->atime = sb.st_atime;
105	us->mtime = sb.st_mtime;
106	return (0);
107}
108
109/* ARGSUSED2 */
110int
111fetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused)
112{
113	return (_fetch_stat_file(u->doc, us));
114}
115
116/* ARGSUSED1 */
117struct url_ent *
118fetchListFile(struct url *u, const char *flags __unused)
119{
120	struct dirent *de;
121	struct url_stat us;
122	struct url_ent *ue;
123	int size, len;
124	char fn[PATH_MAX], *p;
125	DIR *dir;
126	int l;
127
128	if ((dir = opendir(u->doc)) == NULL) {
129		_fetch_syserr();
130		return (NULL);
131	}
132
133	ue = NULL;
134	strncpy(fn, u->doc, sizeof(fn) - 2);
135	fn[sizeof(fn) - 2] = 0;
136	strcat(fn, "/");
137	p = strchr(fn, 0);
138	l = sizeof(fn) - strlen(fn) - 1;
139
140	while ((de = readdir(dir)) != NULL) {
141		strncpy(p, de->d_name, (unsigned)(l - 1));
142		p[l - 1] = 0;
143		if (_fetch_stat_file(fn, &us) == -1)
144			/* should I return a partial result, or abort? */
145			break;
146		_fetch_add_entry(&ue, &size, &len, de->d_name, &us);
147	}
148
149	return (ue);
150}
151