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23c9e63c DD |
1 | /* |
2 | * Copyright (c) 2000, Red Hat, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by DJ Delorie <dj@cygnus.com> | |
13 | * | |
14 | */ | |
15 | ||
16 | /* This is the parent class for all the access methods known to setup | |
17 | (i.e. ways to download files from the internet or other sources */ | |
18 | ||
19 | class NetIO { | |
20 | protected: | |
21 | NetIO (char *url); | |
22 | public: | |
23 | /* if nonzero, this is the estimated total file size */ | |
24 | int file_size; | |
25 | /* broken down url FYI */ | |
26 | char *url; | |
27 | char *proto; | |
28 | char *host; | |
29 | int port; | |
30 | char *path; | |
31 | virtual ~NetIO (); | |
32 | ||
33 | /* The user calls this function to create a suitable accessor for | |
34 | the given URL. It uses the network setup state in state.h. If | |
35 | anything fails, either the return values is NULL or the returned | |
36 | object is !ok() */ | |
37 | static NetIO * open (char *url); | |
38 | ||
39 | /* If !ok() that means the transfer isn't happening. */ | |
40 | virtual int ok (); | |
41 | ||
42 | /* Read `nbytes' bytes from the file. Returns zero when the file | |
43 | is complete. */ | |
44 | virtual int read (char *buf, int nbytes); | |
4e8ff53f DD |
45 | |
46 | /* Helper functions for http/ftp protocols. Both return nonzero for | |
47 | "cancel", zero for "ok". They set net_proxy_user, etc, in | |
48 | state.h */ | |
49 | int get_auth (); | |
50 | int get_proxy_auth (); | |
23c9e63c | 51 | }; |