1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1998-2011 Dag-Erling Smørgrav
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34 #include <sys/param.h>
35 #include <sys/stat.h>
36
37 #include <dirent.h>
38 #include <fcntl.h>
39 #include <stdio.h>
40 #include <string.h>
41
42 #include "fetch.h"
43 #include "common.h"
44
45 FILE *
fetchXGetFile(struct url * u,struct url_stat * us,const char * flags)46 fetchXGetFile(struct url *u, struct url_stat *us, const char *flags)
47 {
48 FILE *f;
49
50 if (us && fetchStatFile(u, us, flags) == -1)
51 return (NULL);
52
53 f = fopen(u->doc, "re");
54
55 if (f == NULL) {
56 fetch_syserr();
57 return (NULL);
58 }
59
60 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
61 fclose(f);
62 fetch_syserr();
63 return (NULL);
64 }
65
66 return (f);
67 }
68
69 FILE *
fetchGetFile(struct url * u,const char * flags)70 fetchGetFile(struct url *u, const char *flags)
71 {
72 return (fetchXGetFile(u, NULL, flags));
73 }
74
75 FILE *
fetchPutFile(struct url * u,const char * flags)76 fetchPutFile(struct url *u, const char *flags)
77 {
78 FILE *f;
79
80 if (CHECK_FLAG('a'))
81 f = fopen(u->doc, "ae");
82 else
83 f = fopen(u->doc, "w+e");
84
85 if (f == NULL) {
86 fetch_syserr();
87 return (NULL);
88 }
89
90 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
91 fclose(f);
92 fetch_syserr();
93 return (NULL);
94 }
95
96 return (f);
97 }
98
99 static int
fetch_stat_file(const char * fn,struct url_stat * us)100 fetch_stat_file(const char *fn, struct url_stat *us)
101 {
102 struct stat sb;
103
104 us->size = -1;
105 us->atime = us->mtime = 0;
106 if (stat(fn, &sb) == -1) {
107 fetch_syserr();
108 return (-1);
109 }
110 us->size = sb.st_size;
111 us->atime = sb.st_atime;
112 us->mtime = sb.st_mtime;
113 return (0);
114 }
115
116 int
fetchStatFile(struct url * u,struct url_stat * us,const char * flags __unused)117 fetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused)
118 {
119 return (fetch_stat_file(u->doc, us));
120 }
121
122 struct url_ent *
fetchListFile(struct url * u,const char * flags __unused)123 fetchListFile(struct url *u, const char *flags __unused)
124 {
125 struct dirent *de;
126 struct url_stat us;
127 struct url_ent *ue;
128 int size, len;
129 char fn[PATH_MAX], *p;
130 DIR *dir;
131 int l;
132
133 if ((dir = opendir(u->doc)) == NULL) {
134 fetch_syserr();
135 return (NULL);
136 }
137
138 ue = NULL;
139 strncpy(fn, u->doc, sizeof(fn) - 2);
140 fn[sizeof(fn) - 2] = 0;
141 strcat(fn, "/");
142 p = strchr(fn, 0);
143 l = sizeof(fn) - strlen(fn) - 1;
144
145 while ((de = readdir(dir)) != NULL) {
146 strncpy(p, de->d_name, l - 1);
147 p[l - 1] = 0;
148 if (fetch_stat_file(fn, &us) == -1)
149 /* should I return a partial result, or abort? */
150 break;
151 fetch_add_entry(&ue, &size, &len, de->d_name, &us);
152 }
153
154 closedir(dir);
155 return (ue);
156 }
157