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
44 FILE *
fetchXGetFile(struct url * u,struct url_stat * us,const char * flags)45 fetchXGetFile(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
65 FILE *
fetchGetFile(struct url * u,const char * flags)66 fetchGetFile(struct url *u, const char *flags)
67 {
68 return (fetchXGetFile(u, NULL, flags));
69 }
70
71 FILE *
fetchPutFile(struct url * u,const char * flags)72 fetchPutFile(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
92 static int
_fetch_stat_file(const char * fn,struct url_stat * us)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 */
110 int
fetchStatFile(struct url * u,struct url_stat * us,const char * flags __unused)111 fetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused)
112 {
113 return (_fetch_stat_file(u->doc, us));
114 }
115
116 /* ARGSUSED1 */
117 struct url_ent *
fetchListFile(struct url * u,const char * flags __unused)118 fetchListFile(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