1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* url.c - Alpine Package Keeper (APK)
*
* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
* Copyright (C) 2008-2011 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation. See http://www.gnu.org/ for details.
*/
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <fetch.h>
#include "apk_io.h"
const char *apk_url_local_file(const char *url)
{
if (strncmp(url, "file:", 5) == 0)
return &url[5];
if (strncmp(url, "http:", 5) != 0 &&
strncmp(url, "https:", 6) != 0 &&
strncmp(url, "ftp:", 4) != 0)
return url;
return NULL;
}
struct apk_fetch_istream {
struct apk_istream is;
fetchIO *fetchIO;
};
static int fetch_maperror(int ec)
{
static const signed short map[] = {
[FETCH_ABORT] = -ECONNABORTED,
[FETCH_AUTH] = -EACCES,
[FETCH_DOWN] = -ECONNREFUSED,
[FETCH_EXISTS] = -EEXIST,
[FETCH_FULL] = -ENOSPC,
/* [FETCH_INFO] = , */
[FETCH_MEMORY] = -ENOMEM,
[FETCH_MOVED] = -ENOENT,
[FETCH_NETWORK] = -ENETUNREACH,
/* [FETCH_OK] = , */
[FETCH_PROTO] = -EPROTO,
[FETCH_RESOLV] = -ENXIO,
[FETCH_SERVER] = -EREMOTEIO,
[FETCH_TEMP] = -EAGAIN,
[FETCH_TIMEOUT] = -ETIMEDOUT,
[FETCH_UNAVAIL] = -ENOENT,
[FETCH_UNKNOWN] = -EIO,
[FETCH_URL] = -EINVAL,
[FETCH_UNCHANGED] = -EALREADY,
};
if (ec < 0 || ec >= ARRAY_SIZE(map) || !map[ec]) return -EIO;
return map[ec];
}
static ssize_t fetch_read(void *stream, void *ptr, size_t size)
{
struct apk_fetch_istream *fis = container_of(stream, struct apk_fetch_istream, is);
ssize_t i = 0, r;
if (ptr == NULL) return apk_istream_skip(&fis->is, size);
while (i < size) {
r = fetchIO_read(fis->fetchIO, ptr + i, size - i);
if (r < 0) return -EIO;
if (r == 0) break;
i += r;
}
return i;
}
static void fetch_close(void *stream)
{
struct apk_fetch_istream *fis = container_of(stream, struct apk_fetch_istream, is);
fetchIO_close(fis->fetchIO);
free(fis);
}
static struct apk_istream *apk_istream_fetch(const char *url, time_t since)
{
struct apk_fetch_istream *fis;
struct url *u;
fetchIO *io;
u = fetchParseURL(url);
if (!u) return ERR_PTR(-ENOMEM);
u->last_modified = since;
io = fetchGet(u, "i");
fetchFreeURL(u);
if (!io) return ERR_PTR(fetch_maperror(fetchLastErrCode));
fis = malloc(sizeof(*fis));
if (!fis) goto err;
*fis = (struct apk_fetch_istream) {
.is.read = fetch_read,
.is.close = fetch_close,
.fetchIO = io,
};
return &fis->is;
err:
if (io) fetchIO_close(io);
return ERR_PTR(-ENOMEM);
}
struct apk_istream *apk_istream_from_fd_url_if_modified(int atfd, const char *url, time_t since)
{
if (apk_url_local_file(url) != NULL)
return apk_istream_from_file(atfd, apk_url_local_file(url));
return apk_istream_fetch(url, since);
}
struct apk_istream *apk_istream_from_url_gz(const char *file)
{
return apk_bstream_gunzip(apk_bstream_from_url(file));
}
struct apk_bstream *apk_bstream_from_fd_url_if_modified(int atfd, const char *url, time_t since)
{
if (apk_url_local_file(url) != NULL)
return apk_bstream_from_file(atfd, apk_url_local_file(url));
return apk_bstream_from_istream(apk_istream_fetch(url, since));
}
|
