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82a316e7 CP |
1 | #include <stdlib.h> |
2 | #include <stdarg.h> | |
3 | #include <stdio.h> | |
4 | #include <string.h> | |
35449aa5 | 5 | #include "../core/hooks.h" |
82a316e7 CP |
6 | #include "../core/config.h" |
7 | #include "../core/error.h" | |
c4610da5 | 8 | #include "../lib/version.h" |
82a316e7 CP |
9 | #include "../lib/sha1.h" |
10 | #include "../lib/hmac.h" | |
11 | #include "../xsb/xsb.h" | |
12 | #include "../control/control.h" | |
35449aa5 CP |
13 | #include "trusts.h" |
14 | ||
c4610da5 GB |
15 | MODULE_VERSION(""); |
16 | ||
82a316e7 CP |
17 | static void broadcast(SHA1_CTX *c, unsigned int replicationid, unsigned int lineno, char *command, char *format, ...) { |
18 | char buf[512], buf2[600]; | |
19 | va_list va; | |
20 | int len; | |
21 | ||
22 | va_start(va, format); | |
23 | vsnprintf(buf, sizeof(buf), format, va); | |
24 | va_end(va); | |
25 | ||
26 | len = snprintf(buf2, sizeof(buf2), "%u %u %s", replicationid, lineno, buf); | |
27 | xsb_broadcast(command, NULL, "%s", buf2); | |
28 | ||
29 | if(len > (sizeof(buf2) - 1)) | |
30 | len = sizeof(buf2) - 1; | |
31 | if(len < 0) | |
32 | len = 0; | |
33 | ||
34 | buf2[len] = '\n'; | |
35 | ||
36 | SHA1Update(c, (unsigned char *)buf2, len + 1); | |
37 | } | |
38 | ||
39 | static void replicate(int forced) { | |
40 | SHA1_CTX s; | |
41 | unsigned int lineno, lines; | |
42 | unsigned char digest[SHA1_DIGESTSIZE]; | |
43 | char digestbuf[SHA1_DIGESTSIZE*2+1]; | |
44 | static unsigned int replicationid = 0; | |
45 | trustgroup *tg; | |
46 | trusthost *th; | |
47 | ||
48 | if(++replicationid > 10000) | |
49 | replicationid = 1; | |
50 | ||
51 | for(lines=2,tg=tglist;tg;tg=tg->next) { | |
52 | lines++; | |
53 | for(th=tg->hosts;th;th=th->next) | |
54 | lines++; | |
55 | } | |
56 | ||
57 | SHA1Init(&s); | |
58 | lineno = 1; | |
59 | broadcast(&s, replicationid, lineno++, "trinit", "%d %u", forced, lines); | |
60 | ||
61 | for(tg=tglist;tg;tg=tg->next) { | |
62 | broadcast(&s, replicationid, lineno++, "trdata", "G %s", dumptg(tg, 0)); | |
63 | ||
64 | for(th=tg->hosts;th;th=th->next) | |
65 | broadcast(&s, replicationid, lineno++, "trdata", "H %s", dumpth(th, 0)); | |
66 | } | |
67 | ||
68 | SHA1Final(digest, &s); | |
69 | xsb_broadcast("trfini", NULL, "%u %u %s", replicationid, lineno, hmac_printhex(digest, digestbuf, SHA1_DIGESTSIZE)); | |
70 | } | |
71 | ||
72 | static int xsb_tr_requeststart(void *source, int argc, char **argv) { | |
73 | static time_t last = 0; | |
74 | time_t t = time(NULL); | |
75 | ||
76 | if(t - last > 5) { | |
77 | last = t; | |
78 | ||
79 | replicate(0); | |
80 | } | |
81 | ||
82 | return CMD_OK; | |
83 | } | |
84 | ||
85 | static void groupadded(int hooknum, void *arg) { | |
86 | trustgroup *tg = arg; | |
87 | ||
88 | xsb_broadcast("traddgroup", NULL, "%s", dumptg(tg, 0)); | |
89 | } | |
90 | ||
91 | static void groupremoved(int hooknum, void *arg) { | |
92 | trustgroup *tg = arg; | |
93 | ||
94 | xsb_broadcast("trdelgroup", NULL, "%u", tg->id); | |
95 | } | |
96 | ||
97 | static void hostadded(int hooknum, void *arg) { | |
98 | trusthost *th = arg; | |
99 | ||
100 | xsb_broadcast("traddhost", NULL, "%s", dumpth(th, 0)); | |
101 | } | |
102 | ||
103 | static void hostremoved(int hooknum, void *arg) { | |
104 | trusthost *th = arg; | |
105 | ||
106 | xsb_broadcast("trdelhost", NULL, "%u", th->id); | |
107 | } | |
108 | ||
2ab0a1e7 CP |
109 | static void groupmodified(int hooknum, void *arg) { |
110 | trustgroup *tg = arg; | |
111 | ||
112 | xsb_broadcast("trmodifygroup", NULL, "%s", dumptg(tg, 0)); | |
113 | } | |
114 | ||
058f68c5 GB |
115 | static void hostmodified(int hooknum, void *arg) { |
116 | trusthost *th = arg; | |
117 | ||
118 | xsb_broadcast("trmodifyhost", NULL, "%s", dumpth(th, 0)); | |
119 | } | |
120 | ||
82a316e7 CP |
121 | static int trusts_cmdtrustforceresync(void *source, int argc, char **argv) { |
122 | nick *np = source; | |
123 | ||
124 | controlreply(np, "Resync in progress. . ."); | |
125 | replicate(1); | |
126 | controlreply(np, "Resync complete."); | |
127 | ||
128 | return CMD_OK; | |
129 | } | |
130 | ||
131 | static int commandsregistered, loaded; | |
132 | static void __dbloaded(int hooknum, void *arg) { | |
35449aa5 CP |
133 | if(commandsregistered) |
134 | return; | |
82a316e7 | 135 | |
35449aa5 CP |
136 | commandsregistered = 1; |
137 | ||
82a316e7 CP |
138 | xsb_addcommand("trrequeststart", 0, xsb_tr_requeststart); |
139 | ||
140 | registerhook(HOOK_TRUSTS_ADDGROUP, groupadded); | |
141 | registerhook(HOOK_TRUSTS_DELGROUP, groupremoved); | |
142 | registerhook(HOOK_TRUSTS_ADDHOST, hostadded); | |
2999f227 | 143 | registerhook(HOOK_TRUSTS_DELHOST, hostremoved); |
2ab0a1e7 | 144 | registerhook(HOOK_TRUSTS_MODIFYGROUP, groupmodified); |
058f68c5 | 145 | registerhook(HOOK_TRUSTS_MODIFYHOST, hostmodified); |
82a316e7 CP |
146 | |
147 | /* we've just reloaded */ | |
148 | /* if we're not online, no problem, other nodes will ask us individually */ | |
149 | if(trusts_fullyonline()) | |
150 | replicate(1); | |
151 | ||
152 | registercontrolhelpcmd("trustforceresync", NO_DEVELOPER, 0, trusts_cmdtrustforceresync, "Usage: trustforceresync"); | |
35449aa5 CP |
153 | } |
154 | ||
82a316e7 | 155 | static void __dbclosed(int hooknum, void *arg) { |
35449aa5 CP |
156 | if(!commandsregistered) |
157 | return; | |
158 | commandsregistered = 0; | |
159 | ||
82a316e7 CP |
160 | xsb_delcommand("trrequeststart", xsb_tr_requeststart); |
161 | ||
162 | registerhook(HOOK_TRUSTS_ADDGROUP, groupadded); | |
163 | registerhook(HOOK_TRUSTS_DELGROUP, groupremoved); | |
164 | registerhook(HOOK_TRUSTS_ADDHOST, hostadded); | |
165 | registerhook(HOOK_TRUSTS_DELGROUP, hostremoved); | |
2ab0a1e7 | 166 | registerhook(HOOK_TRUSTS_MODIFYGROUP, groupmodified); |
058f68c5 | 167 | registerhook(HOOK_TRUSTS_MODIFYHOST, hostmodified); |
82a316e7 CP |
168 | |
169 | deregistercontrolcmd("trustforceresync", trusts_cmdtrustforceresync); | |
35449aa5 CP |
170 | } |
171 | ||
172 | void _init(void) { | |
82a316e7 CP |
173 | sstring *m; |
174 | ||
175 | m = getconfigitem("trusts", "master"); | |
176 | if(!m || (atoi(m->content) != 1)) { | |
177 | Error("trusts_master", ERR_ERROR, "Not a master server, not loaded."); | |
178 | return; | |
179 | } | |
35449aa5 | 180 | |
82a316e7 CP |
181 | loaded = 1; |
182 | ||
183 | registerhook(HOOK_TRUSTS_DB_LOADED, __dbloaded); | |
184 | registerhook(HOOK_TRUSTS_DB_CLOSED, __dbclosed); | |
185 | ||
186 | if(trustsdbloaded) { | |
187 | /* this will force a sync if we're online */ | |
188 | /* if we're not we'll be asked to sync when we come online */ | |
189 | __dbloaded(0, NULL); | |
190 | } else { | |
191 | if(!trusts_loaddb()) | |
192 | Error("trusts_master", ERR_ERROR, "Unable to load database."); | |
193 | ||
194 | /* do nothing else, other servers will ask us when we come online */ | |
195 | /* also the __dbloaded hook will be triggered */ | |
196 | } | |
35449aa5 CP |
197 | } |
198 | ||
199 | void _fini(void) { | |
82a316e7 CP |
200 | if(!loaded) |
201 | return; | |
202 | ||
203 | deregisterhook(HOOK_TRUSTS_DB_LOADED, __dbloaded); | |
204 | deregisterhook(HOOK_TRUSTS_DB_CLOSED, __dbclosed); | |
205 | ||
206 | trusts_closedb(0); | |
35449aa5 | 207 | |
82a316e7 | 208 | __dbclosed(0, NULL); |
35449aa5 | 209 | } |