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comparison src/gt_gnutella.c @ 0:d39e1d0d75b6

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author paulo@hit-nxdomain.opendns.com
date Sat, 20 Feb 2010 21:18:28 -0800
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-1:000000000000 0:5525e01d1f4f
1 /*
2 * $Id: gt_gnutella.c,v 1.74 2006/08/06 16:53:36 hexwab Exp $
3 *
4 * Copyright (C) 2001-2004 giFT project (gift.sourceforge.net)
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 */
16
17 #include "gt_gnutella.h"
18
19 #include "gt_conf.h"
20 #include "sha1.h"
21 #include "xml.h"
22
23 #include "gt_share.h"
24 #include "gt_share_state.h"
25
26 #include "gt_accept.h"
27 #include "gt_ban.h"
28 #include "gt_bind.h"
29
30 #include "gt_node.h"
31 #include "gt_node_list.h"
32 #include "gt_netorg.h"
33
34 #include "gt_xfer_obj.h"
35 #include "gt_xfer.h"
36
37 #include "gt_search.h"
38 #include "gt_search_exec.h"
39
40 #include "gt_web_cache.h"
41 #include "gt_stats.h"
42 #include "gt_query_route.h"
43 #include "transfer/source.h" /* gnutella_source_{add,remove,cmp} */
44
45 /*****************************************************************************/
46
47 /* giFT protocol pointer */
48 Protocol *GT;
49
50 /*****************************************************************************/
51
52 /* The ip address is local if the address is local and the source from which
53 * it was discovered was not local */
54 BOOL gt_is_local_ip (in_addr_t ip, in_addr_t src)
55 {
56 if (ip == 0)
57 return TRUE;
58
59 if (net_match_host (ip, "LOCAL") &&
60 (src == 0 || !net_match_host (src, "LOCAL")))
61 {
62 return TRUE;
63 }
64
65 return FALSE;
66 }
67
68 /*****************************************************************************/
69
70 /* shutdown */
71 static void gnutella_destroy (Protocol *p)
72 {
73 GT->DBGFN (GT, "entered");
74
75 /* cleanup any network maintenance data */
76 gt_netorg_cleanup ();
77
78 /* save the node list to disk */
79 gt_node_list_save ();
80
81 /* cleanup any information about banned nodes */
82 gt_ban_cleanup ();
83
84 /* destroy query_router tables */
85 gt_query_router_self_destroy ();
86
87 /* cleanup remote search data structures */
88 gt_search_cleanup ();
89
90 /* cleanup local share state */
91 gt_share_state_local_cleanup ();
92
93 /* cleanup local search data structures */
94 gt_search_exec_cleanup ();
95
96 /* cleanup XML structures */
97 gt_xml_cleanup ();
98
99 /* free and disconnect all nodes */
100 gt_node_remove_all ();
101
102 /* destroy web cache information */
103 gt_web_cache_cleanup ();
104
105 /* stop binding to the local port */
106 gt_bind_cleanup ();
107
108 /* free configuration information */
109 gt_config_cleanup ();
110
111 /* free this client's GUID */
112 gt_guid_self_cleanup ();
113 }
114
115 /*****************************************************************************/
116
117 static unsigned char *gnutella_sha1_hash (const char *path, size_t *len)
118 {
119 *len = SHA1_BINSIZE;
120 return sha1_digest (path, 0);
121 }
122
123 static char *gnutella_sha1_dsp (unsigned char *hash, size_t len)
124 {
125 return sha1_string (hash);
126 }
127
128 /*****************************************************************************/
129
130 static BOOL self_is_too_old (void)
131 {
132 return FALSE;
133 }
134
135 static void too_old_error_msg (void)
136 {
137 GIFT_ERROR (("\nYour version of the Gnutella plugin is more than 1 year\n"
138 "old. In order to protect the Gnutella network from \n"
139 "older programs, this plugin has deactivated itself.\n\n"
140 "Please update the plugin with a new version from \n"
141 "http://www.giftproject.org/, or stop running the \n"
142 "plugin by runnning gift-setup or removing \"Gnutella\"\n"
143 "from the /main/plugins line in $HOME/.giFT/giftd.conf\n"
144 "manually.\n\n"
145 "Thanks, and sorry for the inconvenience.\n"));
146 }
147
148 static BOOL gnutella_start (Protocol *p)
149 {
150 p->DBGFN (p, "Starting Gnutella plugin");
151
152 /*
153 * If this node is extremely old, deactivate the plugin, but print a
154 * message to the log file.
155 *
156 * This is a temporary hack to clean out old nodes in the future, just
157 * until ultrapeer support is implemented, but we don't want to bother
158 * people that are using other plugins and don't care...
159 */
160 if (self_is_too_old ())
161 {
162 too_old_error_msg ();
163 return TRUE;
164 }
165
166 if (!gt_config_init ())
167 {
168 GIFT_ERROR (("Unable to load config file. Please copy it to "
169 "~/.giFT/Gnutella/Gnutella.conf"));
170 return FALSE;
171 }
172
173 if (!gt_web_cache_init ())
174 {
175 GIFT_ERROR (("Unable to load gwebcaches file. Please copy it to "
176 "~/.giFT/Gnutella/gwebcaches"));
177 return FALSE;
178 }
179
180 /* load any banned ip addresses */
181 gt_ban_init ();
182
183 /* initialize the GUID for this node */
184 gt_guid_self_init ();
185
186 /* listen for connections */
187 gt_bind_init ();
188
189 /* load the list of all previously contacted nodes */
190 gt_node_list_load ();
191
192 /* initialize query router tables */
193 gt_query_router_self_init ();
194
195 /* initialize the local search data structures */
196 gt_search_exec_init ();
197
198 /* initialize the local sharing state */
199 gt_share_state_local_init ();
200
201 /* initialize the remote search data structures */
202 gt_search_init ();
203
204 /* initialize support for xml metadata */
205 gt_xml_init ();
206
207 /* startup network maintenance */
208 gt_netorg_init ();
209
210 return TRUE;
211 }
212
213 /*
214 * The entry-point for the giFT daemon
215 */
216 BOOL Gnutella_init (Protocol *p)
217 {
218 if (protocol_compat (p, LIBGIFTPROTO_MKVERSION (0, 11, 4)) != 0)
219 return FALSE;
220
221 p->version_str = STRDUP (GT_VERSION);
222 GT = p;
223
224 /* gt_gnutella.c: */
225 p->start = gnutella_start;
226
227 /* skip initializing if too old. Note that we still need to provide a
228 * start function since gift's default handler will return FALSE. The
229 * actual error message describing the 'too old' problem is also generated
230 * by our start function.
231 */
232 if (self_is_too_old ())
233 return TRUE;
234
235 /* describe the hash algo */
236 p->hash_handler (p, "SHA1", HASH_PRIMARY, gnutella_sha1_hash,
237 gnutella_sha1_dsp);
238
239 /* gt_gnutella.c: */
240 p->destroy = gnutella_destroy;
241
242 /* gt_search.c: */
243 p->search = gnutella_search;
244 #if 0
245 p->browse = gnutella_browse;
246 #endif
247 p->locate = gnutella_locate;
248 p->search_cancel = gnutella_search_cancel;
249
250 /* gt_xfer.c: */
251 p->download_start = gnutella_download_start;
252 p->download_stop = gnutella_download_stop;
253 p->upload_stop = gnutella_upload_stop;
254 p->chunk_suspend = gnutella_chunk_suspend;
255 p->chunk_resume = gnutella_chunk_resume;
256
257 /* transfer/source.c: */
258 p->source_cmp = gnutella_source_cmp;
259 p->source_add = gnutella_source_add;
260 p->source_remove = gnutella_source_remove;
261
262 #if 0
263 p->upload_avail = gnutella_upload_avail;
264 p->user_cmp = gnutella_user_cmp;
265 #endif
266
267 /* gt_share.c: */
268 p->share_new = gnutella_share_new;
269 p->share_free = gnutella_share_free;
270 p->share_add = gnutella_share_add;
271 p->share_remove = gnutella_share_remove;
272 p->share_sync = gnutella_share_sync;
273
274 /* gt_share_state.c: */
275 p->share_hide = gnutella_share_hide;
276 p->share_show = gnutella_share_show;
277
278 /* gt_stats.c: */
279 p->stats = gnutella_stats;
280
281 return TRUE;
282 }