2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <netinet/in.h>
26 #include <arpa/inet.h>
44 #include "sysevents.h"
49 * The Direct Connect protocol is extremely ugly. Thus, this code must
50 * also be a bit ugly in certain places. Please forgive me. =/
52 * This also means that there might be some pieces of the code that
53 * look completely illogical to you, and you think that you may make
54 * them much neater/better. However, in many cases it might just be
55 * that it's required to cope with some oddity of the protocol, such
56 * as the amazingly ugly delayed key response in the peer protocol.
59 /* I assume this is the correct character set to use for DC,
60 * considering it was developed without i18n support under Windows */
61 #define DCCHARSET "windows-1252"
75 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
82 struct qcommand *next;
88 struct qcommand *f, *l;
96 size_t inbufdata, inbufsize;
97 struct qcmdqueue queue;
98 int extended, dcppemu;
107 struct dcexppeer *next, *prev;
110 struct timer *expire;
115 struct dcpeer *next, *prev;
119 size_t inbufdata, inbufsize;
120 off_t curread, totalsize;
122 struct timer *timeout;
123 struct qcmdqueue queue;
124 struct transfer *transfer;
126 int ptclose; /* Close after transfer is complete */
127 int accepted; /* If false, we connected, otherwise, we accepted */
128 int extended, dcppemu;
129 int direction; /* Using the constants from transfer.h */
131 int hascurpos, fetchingtthl, notthl;
132 struct tigertreehash tth;
141 static struct fnet dcnet;
142 static struct transferiface dctransfer;
143 static struct socket *udpsock = NULL;
144 static struct socket *tcpsock = NULL;
145 static struct dcpeer *peers = NULL;
147 static struct dcexppeer *expected = NULL;
148 static char *hmlistname = NULL;
149 static char *xmllistname = NULL;
150 static char *xmlbz2listname = NULL;
151 static struct timer *listwritetimer = NULL;
153 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
154 static void freedcpeer(struct dcpeer *peer);
155 static void transread(struct socket *sk, struct dcpeer *peer);
156 static void transerr(struct socket *sk, int err, struct dcpeer *peer);
157 static void transwrite(struct socket *sk, struct dcpeer *peer);
158 static void updatehmlist(void);
159 static void updatexmllist(void);
160 static void updatexmlbz2list(void);
161 static void requestfile(struct dcpeer *peer);
162 static void updatelists(int now);
164 static int reservedchar(unsigned char c)
166 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
169 /* Oh, how I despise having to do this... */
170 static char *dcmakekey(char *lock)
176 buf = smalloc(strlen(lock));
179 for(i = 0; lock[i]; i++)
181 buf[i] = lock[i] ^ save;
182 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
184 if((i != 0) && reservedchar(buf[i]))
189 buf[0] ^= buf[i - 1];
190 if(reservedchar(buf[0]))
194 key = smalloc(len + 1);
196 for(i = 0; lock[i] != 0; i++)
198 if(reservedchar(buf[i]))
199 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
201 key[offset++] = buf[i];
208 static wchar_t *nmdc2path(char *nmdc, char *charset)
212 if((ret = icmbstowcs(nmdc, charset)) == NULL)
214 for(p = ret; *p != L'\0'; p++) {
221 static char *path2nmdc(wchar_t *path, char *charset)
225 if((ret = icwcstombs(path, charset)) == NULL)
227 for(p = ret; *p; p++) {
234 static wchar_t *adc2path(char *adc)
236 return(icmbstowcs(adc, "UTF-8"));
239 static char *path2adc(wchar_t *path)
241 return(icwcstombs(path, "UTF-8"));
244 static int isdchash(struct hash *hash)
246 if(wcscmp(hash->algo, L"TTH"))
254 * Uncomment when used!
256 static int hubsupports(struct dchub *hub, char *cap)
260 if(hub->supports == NULL)
262 for(p = hub->supports; *p != NULL; p++)
264 if(!strcasecmp(*p, cap))
271 static int supports(struct dcpeer *peer, char *cap)
275 if(peer->supports == NULL)
277 for(p = peer->supports; *p != NULL; p++)
279 if(!strcasecmp(*p, cap))
285 static void endcompress(struct dcpeer *peer)
287 if(peer->compress == CPRS_ZLIB)
289 deflateEnd(peer->cprsdata);
290 free(peer->cprsdata);
292 peer->compress = CPRS_NONE;
295 static void initcompress(struct dcpeer *peer, int algo)
300 peer->compress = algo;
301 if(algo == CPRS_ZLIB)
303 peer->cprsdata = smalloc(sizeof(z_stream));
304 memset(peer->cprsdata, 0, sizeof(z_stream));
305 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
307 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
313 static void unquote(wchar_t *in)
317 for(p = in; *p != L'\0'; p++)
321 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
328 if(!wcscmp(p + 1, L"amp"))
331 } else if(p[1] == L'#') {
332 nc = ucptowc(wcstol(p + 2, NULL, 10));
341 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
346 static void freeexppeer(struct dcexppeer *ep)
349 ep->next->prev = ep->prev;
351 ep->prev->next = ep->next;
356 if(ep->expire != NULL)
357 canceltimer(ep->expire);
361 static void exppeerexpire(int cancelled, struct dcexppeer *ep)
368 static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
370 struct dcexppeer *ep;
372 ep = smalloc(sizeof(*ep));
373 ep->nick = sstrdup(nick);
374 getfnetnode(ep->fn = fn);
375 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
384 static struct qcommand *newqcmd(struct qcmdqueue *queue, char *string)
386 struct qcommand *new;
388 new = smalloc(sizeof(*new));
389 new->string = sstrdup(string);
394 queue->l->next = new;
400 static struct qcommand *ulqcmd(struct qcmdqueue *queue)
402 struct qcommand *qcmd;
404 if((qcmd = queue->f) == NULL)
406 if((queue->f = qcmd->next) == NULL)
412 static void freeqcmd(struct qcommand *qcmd)
418 static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
420 wchar_t *chat, *wfrom, *wpeer;
422 struct fnetpeer *peer;
426 end = string + strlen(string);
427 while((p = strchr(string, 13)) != NULL)
428 memmove(p, p + 1, (end-- - p));
431 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
432 string += strlen(from) + 2;
433 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
435 wpeer = swcsdup(wfrom);
441 for(p = string + 1; *p; p++)
443 if((*p == ' ') || (*p == '>'))
451 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
457 wpeer = swcsdup(L"");
459 if((chat = icmbstowcs(string, hub->charset)) == NULL)
469 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
470 fnethandlechat(fn, 1, wfrom, wpeer, chat);
472 fnethandlechat(fn, 0, wfrom, wpeer, chat);
474 fnethandlechat(fn, 1, L"", wpeer, chat);
482 static void peertimeout(int cancelled, struct dcpeer *peer)
484 peer->timeout = NULL;
490 static void sendadc(struct socket *sk, char *arg)
493 size_t bufsize, bufdata;
496 bufsize = bufdata = 0;
502 bufcat(buf, "\\s", 2);
503 } else if(*arg == '\n') {
504 bufcat(buf, "\\n", 2);
505 } else if(*arg == '\\') {
506 bufcat(buf, "\\\\", 2);
511 sockqueue(sk, buf, bufdata);
515 #if defined(__GNUC__)
516 static void __attribute__ ((format (printf, 2, 3))) sendadcf(struct socket *sk, char *arg, ...)
518 static void sendadcf(struct socket *sk, char *arg, ...)
525 buf = vsprintf2(arg, args);
533 static char **parseadc(char *args)
536 size_t retbufsize, retbufdata;
538 size_t bufsize, bufdata;
543 retbufsize = retbufdata = bufsize = bufdata = 0;
552 else if(*args != ' ')
556 if((*args == ' ') || (*args == 0))
559 addtobuf(retbuf, buf);
561 bufsize = bufdata = 0;
564 } else if(*args == '\\') {
567 addtobuf(buf, *args);
576 addtobuf(retbuf, NULL);
579 } else if((*args == 's') || (*args == ' ')) {
581 } else if(*args == 'n') {
583 } else if(*args == '\\') {
593 addtobuf(retbuf, NULL);
597 /* Macros useful in command handlers */
598 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
599 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
600 #define qstrf(sk, strandargs...) \
603 if((__buf__ = sprintf2(strandargs)) != NULL) { \
604 sockqueue(sk, __buf__, strlen(__buf__)); \
609 static char *tr(char *str, char *trans)
613 for(; *trans; trans += 2)
615 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
621 static char *getadcid(struct dcpeer *peer)
628 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
630 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
632 buf = base32encode(peer->transfer->hash->buf, 24);
633 ret = sprintf2("TTH/%.39s", buf);
636 ret = path2adc(peer->transfer->path);
642 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
644 if(!wcscmp(cmd, L"resume"))
648 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
651 transfer->curpos = wcstoll(arg, NULL, 10);
660 static void sendmynick(struct dcpeer *peer)
666 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
668 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
671 static void sendpeerlock(struct dcpeer *peer)
674 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
676 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
679 static void sendsupports(struct dcpeer *peer)
682 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
684 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF");
685 if(!confgetint("dc", "hidedeflate"))
686 qstr(peer->sk, " GetZBlock ZLIG");
691 static void requestfile(struct dcpeer *peer)
695 if(peer->transfer->size == -1)
697 /* Use DCCHARSET for $Get paths until further researched... */
698 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
700 transferseterror(peer->transfer, TRNSE_NOTFOUND);
704 /* The transfer will be restarted later from
705 * cmd_filelength when it detects that the sizes
707 qstrf(peer->sk, "$Get %s$1|", buf);
711 if((peer->transfer->hash == NULL) && !peer->notthl)
713 if(supports(peer, "adcget") && supports(peer, "tthl"))
715 qstr(peer->sk, "$ADCGET");
716 sendadc(peer->sk, "tthl");
717 if((buf = getadcid(peer)) == NULL)
719 transferseterror(peer->transfer, TRNSE_NOTFOUND);
723 sendadc(peer->sk, buf);
725 sendadc(peer->sk, "0");
726 sendadc(peer->sk, "-1");
728 peer->fetchingtthl = 1;
734 if(forkfilter(peer->transfer))
736 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
740 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
743 if(supports(peer, "adcget"))
745 qstr(peer->sk, "$ADCGET");
746 sendadc(peer->sk, "file");
747 if((buf = getadcid(peer)) == NULL)
749 transferseterror(peer->transfer, TRNSE_NOTFOUND);
753 sendadc(peer->sk, buf);
755 sendadcf(peer->sk, "%ji", (intmax_t)peer->transfer->curpos);
756 sendadcf(peer->sk, "%ji", (intmax_t)(peer->transfer->size - peer->transfer->curpos));
758 } else if(supports(peer, "xmlbzlist")) {
759 if((buf = path2nmdc(peer->transfer->path, "UTF-8")) == NULL)
761 transferseterror(peer->transfer, TRNSE_NOTFOUND);
765 qstrf(peer->sk, "$UGetBlock %ji %ji %s|", (intmax_t)peer->transfer->curpos, (intmax_t)(peer->transfer->size - peer->transfer->curpos), buf);
768 /* Use DCCHARSET for $Get paths until further researched... */
769 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
771 transferseterror(peer->transfer, TRNSE_NOTFOUND);
775 qstrf(peer->sk, "$Get %s$%ji|", buf, (intmax_t)peer->transfer->curpos + 1);
780 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
784 struct fnetnode *cfn;
788 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
789 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
790 qstrf(sk, "%s", buf);
792 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
794 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
796 if(cfn->regstatus == FNNS_OP)
798 else if(cfn->regstatus == FNNS_REG)
804 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
805 (hub->dcppemu)?"++":"Dolda",
806 (hub->dcppemu)?"0.674":VERSION,
807 (tcpsock == NULL)?'P':'A',
809 confgetint("transfer", "slots")
812 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
813 qstrf(sk, "%s\x01$", buf);
814 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
815 qstrf(sk, "%s$", buf);
816 qstrf(sk, "%llu$|", sharesize);
819 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
824 if(!strcmp(cmd, "$Lock"))
826 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
827 } else if(!strcmp(cmd, "$Hello")) {
828 if(fn->state == FNN_HS)
830 qstrf(sk, "$Version 1,0091|");
831 qstrf(sk, "$GetNickList|");
833 fnetsetstate(fn, FNN_EST);
835 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
840 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
847 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
849 if((p = strchr(args, ' ')) != NULL)
854 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
856 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch");
857 if(!confgetint("dc", "hidedeflate"))
858 qstr(sk, " GetZBlock");
862 key = dcmakekey(args);
863 qstrf(sk, "$Key %s|", key);
865 hubhandleaction(sk, fn, cmd, args);
868 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
874 if(hub->nativename == NULL)
875 free(hub->nativename);
876 hub->nativename = sstrdup(args);
877 buf = icmbstowcs(args, hub->charset);
878 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
881 hubhandleaction(sk, fn, cmd, args);
884 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
890 if((nick = icmbstowcs(args, hub->charset)) == NULL)
892 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
893 fnetaddpeer(fn, nick, nick);
895 hubhandleaction(sk, fn, cmd, args);
898 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
901 struct fnetpeer *peer;
905 if((nick = icmbstowcs(args, hub->charset)) == NULL)
907 if((peer = fnetfindpeer(fn, nick)) != NULL)
910 hubhandleaction(sk, fn, cmd, args);
913 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
918 struct fnetpeer *peer;
921 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
922 peer->flags.b.delete = 1;
923 while((p = strstr(args, "$$")) != NULL)
926 if((buf = icmbstowcs(args, hub->charset)) != NULL)
928 if((peer = fnetfindpeer(fn, buf)) == NULL)
929 peer = fnetaddpeer(fn, buf, buf);
931 peer->flags.b.delete = 0;
933 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
938 hubhandleaction(sk, fn, cmd, args);
941 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
946 struct fnetpeer *peer;
949 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
950 peer->flags.b.op = 0;
951 while((p = strstr(args, "$$")) != NULL)
954 if((buf = icmbstowcs(args, hub->charset)) != NULL)
956 if((peer = fnetfindpeer(fn, buf)) != NULL)
957 peer->flags.b.op = 1;
962 hubhandleaction(sk, fn, cmd, args);
965 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
968 wchar_t *buf, *wp, *wp2;
970 struct fnetpeer *peer;
975 if(strncmp(p, "$ALL ", 5))
978 if((p2 = strchr(p, ' ')) == NULL)
981 if((buf = icmbstowcs(p, hub->charset)) == NULL)
983 if((peer = fnetfindpeer(fn, buf)) == NULL)
984 peer = fnetaddpeer(fn, buf, buf);
987 if((p2 = strstr(p, "$ $")) == NULL)
990 if((buf = icmbstowcs(p, hub->charset)) == NULL)
992 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
994 buf[wcslen(buf) - 1] = L'\0';
996 if((wp2 = wcschr(wp, L' ')) != NULL)
999 fnetpeersetstr(peer, L"dc-client", wp);
1003 if((wp2 = wcschr(wp, L',')) != NULL)
1007 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
1008 fnetpeersetstr(peer, abuf, wp + 2);
1010 } while(wp2 != NULL);
1013 fnetpeersetstr(peer, L"descr", buf);
1016 if((p2 = strchr(p, '$')) == NULL)
1019 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1021 fnetpeersetstr(peer, L"dc-speed", buf);
1024 if((p2 = strchr(p, '$')) == NULL)
1027 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1029 fnetpeersetstr(peer, L"email", buf);
1034 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1035 hubhandleaction(sk, fn, cmd, args);
1038 /* I do not implement the fully in that I do not disconnect from the
1039 * old hub. I do this since I believe that if the hub owner really
1040 * wants to get rid of us, then it is his responsibility to disconnect
1042 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1045 struct fnetnode *newfn;
1049 if(strchr(args, ':') == NULL)
1051 args = strcpy(smalloc(strlen(args) + 5), args);
1052 strcat(args, ":411");
1057 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
1059 linkfnetnode(newfn);
1062 hubhandleaction(sk, fn, cmd, args);
1067 static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
1072 if(node->parent == NULL)
1074 if(node->parent == shareroot)
1076 if((buf = icwcstombs(node->name, charset)) == NULL)
1079 *retlen = strlen(buf);
1082 if((buf2 = icwcstombs(node->name, charset)) == NULL)
1084 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
1089 len2 = strlen(buf2);
1090 buf = srealloc(buf, len + 1 + len2 + 1);
1092 strcpy(buf + len, buf2);
1093 buf[len + len2] = 0;
1096 *retlen = len + len2;
1102 * This is the main share searching function for Direct Connect
1103 * peers. Feel free to optimize it if you feel the need for it. I
1104 * haven't ever seen it take any noticable CPU time anyway, so I
1105 * haven't felt that need.
1107 * It may feel dubious to just return the directory when all terms are
1108 * satisfied rather than all the files in it, but it really benefits
1109 * everyone: Less cycles used for us, less UDP squelching for active
1110 * searchers, and less bandwidth waste for hubs when serving passive
1113 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1118 char *prefix, *infix, *postfix, *buf, *buf2;
1120 struct sockaddr_in addr;
1121 struct sharecache *node;
1122 int minsize, maxsize;
1125 int termnum, satisfied, skipcheck;
1126 int level, tersat[32];
1127 wchar_t *terms[32], *lname;
1131 if((p = strchr(args, ' ')) == NULL)
1135 memset(terms, 0, sizeof(terms));
1136 prefix = infix = postfix = NULL;
1140 if(!strncmp(args, "Hub:", 4))
1142 if(!strcmp(cmd, "$MultiSearch"))
1144 if(!strcmp(args + 4, hub->nativenick))
1146 prefix = sprintf2("$SR %s ", hub->nativenick);
1147 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1148 postfix = sprintf2(" (%s)\005%s|", formataddress(hub->sk->remote, hub->sk->remotelen), args + 4);
1152 if((p2 = strchr(args, ':')) == NULL)
1155 addr.sin_family = AF_INET;
1156 if(!inet_aton(args, &addr.sin_addr))
1158 addr.sin_port = htons(atoi(p2));
1159 prefix = sprintf2("$SR %s ", hub->nativenick);
1160 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1161 postfix = sprintf2(" (%s)|", formataddress(hub->sk->remote, hub->sk->remotelen));
1162 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1165 minsize = maxsize = -1;
1174 if((*(p++) == 'T') && (minsize == 0))
1181 if((p2 = strchr(p, '?')) == NULL)
1196 if((*p2 == 0) || (*p2 == '$'))
1204 if(!dotth && !strncmp(p, "TTH:", 4))
1207 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1212 memcpy(hashtth, buf, 24);
1215 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL) {
1216 wcslower(terms[termnum]);
1228 node = shareroot->child;
1230 for(i = 0; i < termnum; i++)
1236 if(node->f.b.type == FILE_REG)
1238 if((minsize >= 0) && (node->size < minsize))
1240 if((maxsize >= 0) && (node->size > maxsize))
1243 if(!skipcheck && dotth)
1245 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1250 lname = wcslower(swcsdup(node->name));
1251 for(i = 0; i < termnum; i++)
1255 if(wcsstr(lname, terms[i]))
1259 } else if(node->child == NULL) {
1265 if(!skipcheck && (satisfied == termnum))
1267 /* Use DCCHARSET in $Get paths until further researched... */
1268 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
1270 if(node->f.b.hastth)
1272 buf2 = base32encode(node->hashtth, 24);
1273 qstrf(dsk, "%s%s\005%ji%sTTH:%.39s%s", prefix, buf, (intmax_t)node->size, infix, buf2, postfix);
1276 qstrf(dsk, "%s%s\005%ji%s%s%s", prefix, buf, (intmax_t)node->size, infix, hub->nativename, postfix);
1281 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1283 while(node->next == NULL)
1285 if((node = node->parent) == shareroot)
1289 if(node == shareroot)
1291 for(i = 0; i < termnum; i++)
1293 if(tersat[i] >= level)
1306 hubhandleaction(sk, fn, cmd, args);
1317 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1321 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1325 struct socket *newsk;
1326 struct sockaddr_in addr;
1329 if((p = strchr(args, ' ')) == NULL)
1332 if(strcmp(args, hub->nativenick))
1334 addr.sin_family = AF_INET;
1336 if((p = strchr(args, ':')) == NULL)
1339 addr.sin_port = htons(atoi(p));
1340 if(!inet_aton(args, &addr.sin_addr))
1342 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1344 hubhandleaction(sk, fn, cmd, args);
1347 static void sendctm(struct socket *sk, char *nick)
1349 struct sockaddr *addr;
1354 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
1356 if(addr->sa_family == AF_INET)
1357 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1359 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1363 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1369 if((p = strchr(args, ' ')) == NULL)
1372 if(strcmp(p, hub->nativenick))
1375 expectpeer(args, fn);
1376 hubhandleaction(sk, fn, cmd, args);
1379 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1382 struct fnetnode *node;
1387 for(node = fnetnodes; node != NULL; node = node->next)
1389 if(node->state == FNN_EST)
1392 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1393 hubhandleaction(sk, fn, cmd, args);
1396 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1403 if((p2 = strchr(p, ' ')) == NULL)
1407 if((p2 = strchr(p, ' ')) == NULL)
1410 if(strcmp(p, "From:"))
1413 if((p2 = strstr(p, " $")) == NULL)
1417 hubrecvchat(hub->sk, fn, p, p2);
1418 hubhandleaction(sk, fn, cmd, args);
1421 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1425 char *nick, *filename, *hubname;
1430 wchar_t *wnick, *wfile;
1434 if((p2 = strchr(p, ' ')) == NULL)
1439 if((p2 = strchr(p, 5)) == NULL)
1443 if((p2 = strchr(p, ' ')) == NULL)
1446 size = strtoll(p, NULL, 10);
1448 if((p2 = strchr(p, '/')) == NULL)
1453 if((p2 = strchr(p, 5)) == NULL)
1457 if((p2 = strstr(p, " (")) == NULL)
1460 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
1462 /* Use DCCHARSET in $Get paths until further researched... */
1463 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
1468 sr = newsrchres(&dcnet, wfile, wnick);
1469 if(sr->peernick != NULL)
1471 sr->peernick = swcsdup(wnick);
1476 if(!strncmp(hubname, "TTH:", 4))
1478 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1481 sr->hash = newhash(L"TTH", 24, buf);
1485 getfnetnode(sr->fn = fn);
1488 hubhandleaction(sk, fn, cmd, args);
1491 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1493 /* Do nothing for now. */
1496 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1503 pw = wpfind(fn->args, L"password");
1504 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
1509 qstrf(sk, "$MyPass %s|", mbspw);
1511 fn->regstatus = FNNS_REG;
1512 hubhandleaction(sk, fn, cmd, args);
1515 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1520 fn->regstatus = FNNS_OP;
1521 hubhandleaction(sk, fn, cmd, args);
1524 static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1530 size_t arrsize, arrdata;
1533 if(hub->supports != NULL)
1535 for(i = 0; hub->supports[i] != NULL; i++)
1536 free(hub->supports[i]);
1537 free(hub->supports);
1540 arrsize = arrdata = 0;
1544 if((p2 = strchr(p, ' ')) != NULL)
1548 addtobuf(arr, sstrdup(p));
1549 } while((p = p2) != NULL);
1550 addtobuf(arr, NULL);
1551 hub->supports = arr;
1554 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1556 struct dcexppeer *expect;
1559 if(peer->nativename != NULL)
1560 free(peer->nativename);
1561 peer->nativename = sstrdup(args);
1562 if(peer->wcsname != NULL)
1563 free(peer->wcsname);
1564 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
1571 for(expect = expected; expect != NULL; expect = expect->next)
1573 if(!strcmp(expect->nick, args))
1580 hub = expect->fn->data;
1581 peer->fn = expect->fn;
1582 getfnetnode(peer->fn);
1583 peer->dcppemu = hub->dcppemu;
1584 freeexppeer(expect);
1589 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1593 struct transfer *transfer;
1595 if((p = strchr(args, ' ')) == NULL)
1598 if(!strcmp(args, "Upload"))
1600 if(!strcmp(args, "Download"))
1604 if((peer->transfer == NULL) || (mydir != peer->direction))
1609 if(peer->direction == TRNSD_DOWN)
1612 if(peer->wcsname == NULL)
1617 peer->direction = mydir;
1618 if(peer->direction == TRNSD_UP)
1620 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1625 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1627 if((transfer = finddownload(peer->wcsname)) == NULL)
1632 transferattach(transfer, &dctransfer, peer);
1633 transfersetstate(transfer, TRNS_HS);
1635 transfersetnick(transfer, peer->wcsname);
1636 peer->transfer = transfer;
1639 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1640 if(peer->key != NULL)
1641 qstrf(sk, "$Key %s|", peer->key);
1642 if(peer->direction == TRNSD_DOWN)
1647 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1650 struct transfer *transfer;
1652 if((p = strchr(args, ' ')) == NULL)
1655 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1657 key = dcmakekey(args);
1660 if(peer->wcsname == NULL)
1669 if((transfer = finddownload(peer->wcsname)) == NULL)
1671 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1676 peer->direction = TRNSD_UP;
1677 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1679 peer->direction = TRNSD_DOWN;
1680 transferattach(transfer, &dctransfer, peer);
1681 transfersetstate(transfer, TRNS_HS);
1683 transfersetnick(transfer, peer->wcsname);
1684 peer->transfer = transfer;
1685 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1686 qstrf(sk, "$Key %s|", key);
1689 if(peer->key != NULL)
1695 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1700 static void startdl(struct dcpeer *peer)
1702 if(peer->timeout != NULL)
1703 canceltimer(peer->timeout);
1704 peer->state = PEER_TRNS;
1705 transferstartdl(peer->transfer, peer->sk);
1706 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1707 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1710 static void startul(struct dcpeer *peer)
1712 if(peer->timeout != NULL)
1713 canceltimer(peer->timeout);
1714 peer->state = PEER_TRNS;
1715 transferstartul(peer->transfer, peer->sk);
1716 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
1719 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1722 struct transfer *transfer;
1724 if(peer->transfer == NULL)
1729 size = strtoll(args, NULL, 10);
1730 if(peer->transfer->size != size)
1732 transfersetsize(peer->transfer, size);
1733 transfer = peer->transfer;
1735 resettransfer(transfer);
1736 trytransferbypeer(transfer->fnet, transfer->peerid);
1740 qstr(peer->sk, "$Send|");
1743 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1745 if(peer->fetchingtthl)
1747 peer->fetchingtthl = 0;
1752 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1754 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1755 resettransfer(peer->transfer);
1761 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1763 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1765 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1766 resettransfer(peer->transfer);
1779 {"MyList.DcLst", &hmlistname, updatehmlist},
1780 {"files.xml", &xmllistname, updatexmllist},
1781 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1785 static int openfilelist(char *name)
1790 for(i = 0; lists[i].name != NULL; i++)
1792 if(!strcmp(name, lists[i].name))
1796 if(lists[i].name == NULL)
1799 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1801 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1804 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1811 static struct sharecache *findbytth(char *tth32)
1815 struct sharecache *node;
1817 if((buf = base32decode(tth32, &buflen)) == NULL)
1824 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1826 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1833 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1835 struct sharecache *node;
1842 if((p2 = strchr(p, sep)) != NULL)
1844 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1851 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1856 struct sharecache *node;
1857 struct socket *lesk;
1861 if(peer->transfer == NULL)
1866 if((p = strchr(args, '$')) == NULL)
1872 if((offset = (strtoll(p, NULL, 10) - 1)) < 0)
1877 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1879 qstr(sk, "$Error Could not send file list|");
1882 } else if(fd >= 0) {
1883 if((buf2 = nmdc2path(args, DCCHARSET)) != NULL) {
1884 transfersetpath(peer->transfer, buf2);
1887 peer->transfer->flags.b.minislot = 1;
1891 /* Use DCCHARSET in $Get paths until further researched... */
1892 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1894 qstrf(sk, "$Error File not in share|");
1898 if((fd = opensharecache(node)) < 0)
1900 qstrf(sk, "$Error %s|", strerror(errno));
1904 buf = getfspath(node);
1905 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1906 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1908 transfersetpath(peer->transfer, buf2);
1911 if(fstat(fd, &sb) < 0)
1914 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1915 qstrf(sk, "$Error|");
1919 if(sb.st_size < 65536)
1920 peer->transfer->flags.b.minislot = 1;
1921 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1923 qstr(sk, "$MaxedOut|");
1927 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1930 qstrf(sk, "$Error Offset out of range|");
1934 lesk = wrapsock(fd);
1935 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1937 qstrf(sk, "$FileLength %ji|", (intmax_t)peer->transfer->size);
1940 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1942 if(peer->transfer == NULL)
1947 if(peer->transfer->localend == NULL)
1956 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1961 size_t arrsize, arrdata;
1963 if(peer->supports != NULL)
1965 for(i = 0; peer->supports[i] != NULL; i++)
1966 free(peer->supports[i]);
1967 free(peer->supports);
1970 arrsize = arrdata = 0;
1974 if((p2 = strchr(p, ' ')) != NULL)
1978 addtobuf(arr, sstrdup(p));
1979 } while((p = p2) != NULL);
1980 addtobuf(arr, NULL);
1981 peer->supports = arr;
1984 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1988 off_t start, numbytes;
1989 char *charset, *buf;
1991 struct sharecache *node;
1993 struct socket *lesk;
1995 if(peer->transfer == NULL)
2001 if((p2 = strchr(p, ' ')) == NULL)
2007 start = strtoll(p, NULL, 10);
2009 if((p2 = strchr(p, ' ')) == NULL)
2015 numbytes = strtoll(p, NULL, 10);
2017 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
2020 /* Use DCCHARSET in $Get paths until further researched... */
2021 charset = DCCHARSET;
2022 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
2023 initcompress(peer, CPRS_ZLIB);
2024 if(((fd = openfilelist(p)) < 0) && (errno != 0))
2026 qstr(sk, "$Error Could not send file list|");
2028 } else if(fd >= 0) {
2029 if((buf2 = nmdc2path(args, charset)) != NULL) {
2030 transfersetpath(peer->transfer, buf2);
2033 peer->transfer->flags.b.minislot = 1;
2037 if((node = resdcpath(p, charset, '\\')) == NULL)
2039 qstr(sk, "$Error File not in cache|");
2042 if((fd = opensharecache(node)) < 0)
2044 qstrf(sk, "$Error %s|", strerror(errno));
2047 buf = getfspath(node);
2048 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2049 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2051 transfersetpath(peer->transfer, buf2);
2054 if(fstat(fd, &sb) < 0)
2057 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2058 qstr(sk, "$Error|");
2061 if(sb.st_size < 65536)
2062 peer->transfer->flags.b.minislot = 1;
2063 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2065 qstr(sk, "$MaxedOut|");
2068 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2071 qstr(sk, "$Error Offset out of range|");
2074 if((numbytes < 0) || (start + numbytes > sb.st_size))
2075 numbytes = sb.st_size - start;
2076 lesk = wrapsock(fd);
2077 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2079 qstrf(sk, "$Sending %ji|", (intmax_t)numbytes);
2083 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2087 off_t start, numbytes;
2088 struct sharecache *node;
2090 struct socket *lesk;
2094 if(peer->transfer == NULL)
2099 if((argv = parseadc(args)) == NULL)
2104 if(parrlen(argv) < 4)
2109 start = strtoll(argv[2], NULL, 10);
2110 numbytes = strtoll(argv[3], NULL, 10);
2113 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2115 qstr(sk, "$Error Could not send file list|");
2117 } else if(fd >= 0) {
2118 if((wbuf = adc2path(argv[1])) != NULL)
2119 transfersetpath(peer->transfer, wbuf);
2120 peer->transfer->flags.b.minislot = 1;
2124 if(!strncmp(argv[1], "TTH/", 4))
2126 if((node = findbytth(argv[1] + 4)) == NULL)
2128 qstr(sk, "$Error File not in cache|");
2132 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2134 qstr(sk, "$Error File not in cache|");
2138 if((fd = opensharecache(node)) < 0)
2140 qstrf(sk, "$Error %s|", strerror(errno));
2143 buf = getfspath(node);
2144 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2145 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2147 transfersetpath(peer->transfer, wbuf);
2150 if(!strcmp(argv[0], "file"))
2152 for(i = 4; argv[i] != NULL; i++)
2154 if(!strcmp(argv[i], "ZL1"))
2155 initcompress(peer, CPRS_ZLIB);
2157 if(fstat(fd, &sb) < 0)
2159 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2160 qstr(sk, "$Error|");
2163 if(sb.st_size < 65536)
2164 peer->transfer->flags.b.minislot = 1;
2165 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2166 qstr(sk, "$MaxedOut|");
2169 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2171 qstr(sk, "$Error Offset out of range|");
2174 if((numbytes < 0) || (start + numbytes > sb.st_size))
2175 numbytes = sb.st_size - start;
2176 lesk = wrapsock(fd);
2177 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2180 qstr(sk, "$ADCSND");
2181 sendadc(sk, "file");
2182 sendadc(sk, argv[1]);
2183 sendadcf(sk, "%ji", (intmax_t)start);
2184 sendadcf(sk, "%ji", (intmax_t)numbytes);
2185 if(peer->compress == CPRS_ZLIB)
2189 } else if(!strcmp(argv[0], "tthl")) {
2191 * XXX: Implement full TTHL support.
2193 * In the meantime, this is better than nothing, since it at
2194 * least allows fetching of the TTH root if it isn't already
2199 qstr(sk, "$Error no TTHL data for virtual files|");
2202 qstr(sk, "$ADCSND");
2203 sendadc(sk, "tthl");
2204 sendadc(sk, argv[1]);
2208 sockqueue(sk, node->hashtth, 24);
2210 qstr(sk, "$Error Namespace not implemented|");
2220 static void handletthl(struct dcpeer *peer)
2224 while(peer->inbufdata >= 24)
2226 pushtigertree(&peer->tth, peer->inbuf);
2227 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2228 peer->curread += 24;
2230 if(peer->curread >= peer->totalsize)
2232 if(peer->timeout == NULL)
2233 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2234 peer->state = PEER_CMD;
2235 synctigertree(&peer->tth);
2236 restigertree(&peer->tth, buf);
2237 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2242 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2245 off_t start, numbytes;
2247 if(peer->transfer == NULL)
2252 if((argv = parseadc(args)) == NULL)
2257 if(parrlen(argv) < 4)
2262 start = strtoll(argv[2], NULL, 10);
2263 numbytes = strtoll(argv[3], NULL, 10);
2264 if(!strcmp(argv[0], "tthl"))
2266 if((start != 0) || (numbytes % 24 != 0))
2268 /* Weird. Bail out. */
2272 if(peer->timeout != NULL)
2273 canceltimer(peer->timeout);
2274 peer->state = PEER_TTHL;
2275 peer->totalsize = numbytes;
2277 peer->fetchingtthl = 0;
2278 inittigertree(&peer->tth);
2280 } else if(!strcmp(argv[0], "file")) {
2281 if(start != peer->transfer->curpos)
2286 if(start + numbytes != peer->transfer->size)
2288 transfersetsize(peer->transfer, start + numbytes);
2293 if(peer->inbufdata > 0)
2295 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2296 peer->inbufdata = 0;
2297 transread(sk, peer);
2300 /* We certainly didn't request this...*/
2309 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2313 if(peer->transfer == NULL)
2318 numbytes = strtoll(args, NULL, 10);
2319 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2321 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2326 if(peer->inbufdata > 0)
2328 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2329 peer->inbufdata = 0;
2330 transread(sk, peer);
2336 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2341 hubhandleaction(sk, fn, cmd, args);
2345 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2351 static int hubreqconn(struct fnetpeer *peer)
2356 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2361 if((hub = peer->fn->data) == NULL)
2366 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
2367 return(1); /* Shouldn't happen, of course, but who knows... */
2370 sendctm(hub->sk, mbsnick);
2371 expectpeer(mbsnick, peer->fn);
2373 qstrf(hub->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2379 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2382 char *mbsstring, *mbsto;
2385 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
2390 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
2395 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2402 if(strchr(mbsstring, '|') != NULL)
2413 qstrf(hub->sk, "<%s> %s|", hub->nativenick, mbsstring);
2415 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2418 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2425 static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2427 int minl, maxl, minr, maxr, retmin, retmax;
2432 findsizelimit(sexpr->l, &minl, &maxl);
2433 findsizelimit(sexpr->r, &minr, &maxr);
2434 retmin = (minl > minr)?minl:minr;
2435 if((maxl != -1) && (maxr != -1))
2436 retmax = (maxl < maxr)?maxl:maxr;
2445 findsizelimit(sexpr->l, &minl, &maxl);
2446 findsizelimit(sexpr->r, &minr, &maxr);
2447 retmin = (minl < minr)?minl:minr;
2448 if((maxl == -1) || (maxr == -1))
2451 retmax = (maxl > maxr)?maxl:maxr;
2454 findsizelimit(sexpr->l, &minl, &maxl);
2455 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2459 } else if((minl == 0) && (maxl != -1)) {
2462 } else if((minl != 0) && (maxl == -1)) {
2465 } else { /* This would yield two seperate intervals, which DC cannot handle */
2471 retmax = sexpr->d.n - 1;
2474 retmin = sexpr->d.n;
2475 retmax = sexpr->d.n;
2478 retmin = sexpr->d.n + 1;
2492 static struct hash *findsehash(struct sexpr *sexpr)
2494 struct hash *h1, *h2;
2499 if((h1 = findsehash(sexpr->l)) != NULL)
2501 if((h1 = findsehash(sexpr->r)) != NULL)
2505 if((h1 = findsehash(sexpr->l)) == NULL)
2507 if((h2 = findsehash(sexpr->r)) == NULL)
2513 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2514 return(sexpr->d.hash);
2521 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2524 struct wcslist *list, *cur;
2525 char *sstr, *buf, *p;
2526 size_t sstrsize, sstrdata;
2527 struct sockaddr *name;
2529 int minsize, maxsize;
2533 if((fn->state != FNN_EST) || (hub->sk == NULL) || (hub->sk->state != SOCK_EST))
2535 list = findsexprstrs(srch->sexpr);
2536 findsizelimit(srch->sexpr, &minsize, &maxsize);
2537 hash = findsehash(srch->sexpr);
2538 if((minsize != 0) && (maxsize != -1))
2540 /* Choose either minsize or maxsize by trying to determine
2541 * which choice will be most restrictive. The result can be
2542 * approximative at best anyway, so don't try too hard... */
2543 if((50000000 - maxsize) > (minsize - 50000000))
2549 sstrsize = sstrdata = 0;
2550 if((hash != NULL) && (hash->len == 24))
2552 /* Prioritize hash searches above all else */
2553 bufcat(sstr, "F?T?0?9?TTH:", 12);
2554 buf = base32encode(hash->buf, hash->len);
2556 bufcat(sstr, buf, 39);
2561 sizebuf2(sstr, sstrdata + 32, 1);
2562 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
2563 } else if(maxsize != -1) {
2564 sizebuf2(sstr, sstrdata + 32, 1);
2565 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
2567 bufcat(sstr, "F?F?0?1?", 8);
2571 for(cur = list; cur != NULL; cur = cur->next)
2573 /* Use DCCHARSET in $Get paths until further researched... */
2574 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2576 /* Can't find anything anyway if the search expression
2577 * requires characters outside DC's charset. There's
2578 * nothing technically wrong with the search itself,
2579 * however, so return success. This should be
2580 * considered as an optimization. */
2587 addtobuf(sstr, '$');
2589 * It probably doesn't hurt if buf contains any extra
2590 * dollar signs - it will just result in extra search
2591 * terms, and the extraneous results will be filtered by
2592 * the search layer anyway. It hurts if it contains any
2593 * pipes, though, so let's sell them for money.
2595 for(p = buf; *p; p++)
2600 bufcat(sstr, buf, strlen(buf));
2604 /* Will match all files... :-/ */
2605 addtobuf(sstr, '.');
2611 if(sockgetremotename2(udpsock, hub->sk, &name, &namelen) < 0)
2613 flog(LOG_WARNING, "cannot get address of UDP socket");
2615 qstrf(hub->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2619 qstrf(hub->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2623 fn->lastsrch = time(NULL);
2631 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2632 static struct command hubcmds[] =
2634 {"$Lock", cc(cmd_lock)},
2635 {"$HubName", cc(cmd_hubname)},
2636 {"$Hello", cc(cmd_hello)},
2637 {"$Quit", cc(cmd_quit)},
2638 {"$NickList", cc(cmd_nicklist)},
2639 {"$OpList", cc(cmd_oplist)},
2640 {"$MyINFO", cc(cmd_myinfo)},
2641 {"$ForceMove", cc(cmd_forcemove)},
2642 {"$Search", cc(cmd_search), .limit = 100},
2643 {"$MultiSearch", cc(cmd_search), .limit = 50},
2644 {"$ConnectToMe", cc(cmd_connecttome), .limit = 200},
2645 {"$RevConnectToMe", cc(cmd_revconnecttome), .limit = 500},
2646 {"$GetNetInfo", cc(cmd_getnetinfo)},
2647 {"$To:", cc(cmd_to)},
2648 {"$SR", cc(cmd_sr)},
2649 {"$UserCommand", cc(cmd_usercommand)},
2650 {"$GetPass", cc(cmd_getpass)},
2651 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2652 {"$Supports", cc(cmd_hubsupports)},
2656 static struct command peercmds[] =
2658 {"$MyNick", cc(cmd_mynick)},
2659 {"$Lock", cc(cmd_peerlock)},
2660 {"$Direction", cc(cmd_direction)},
2661 {"$Key", cc(cmd_key)},
2662 {"$FileLength", cc(cmd_filelength)},
2663 {"$Error", cc(cmd_error)},
2664 {"$MaxedOut", cc(cmd_maxedout)},
2665 {"$Get", cc(cmd_get)},
2666 {"$Send", cc(cmd_send)},
2667 {"$Supports", cc(cmd_supports)},
2668 {"$GetBlock", cc(cmd_getblock)},
2669 {"$UGetBlock", cc(cmd_getblock)},
2670 {"$GetZBlock", cc(cmd_getblock)},
2671 {"$UGetZBlock", cc(cmd_getblock)},
2672 {"$ADCGET", cc(cmd_adcget)},
2673 {"$ADCSND", cc(cmd_adcsnd), .stop = 1},
2674 {"$Sending", cc(cmd_sending), .stop = 1},
2679 static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2681 CBUNREG(transfer, trans_filterout, peer);
2682 peer->transfer = NULL;
2686 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2690 unsigned char outbuf[1024];
2694 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2696 if(sockqueuesize(peer->sk) < 65536)
2698 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2700 if(peer->compress == CPRS_NONE)
2702 sockqueue(peer->sk, buf, bufsize);
2703 } else if(peer->compress == CPRS_ZLIB) {
2704 cstr = peer->cprsdata;
2705 cstr->next_in = buf;
2706 cstr->avail_in = bufsize;
2707 while(cstr->avail_in > 0)
2709 cstr->next_out = outbuf;
2710 cstr->avail_out = sizeof(outbuf);
2711 if((ret = deflate(cstr, 0)) != Z_OK)
2713 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2717 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2722 if(peer->state == PEER_SYNC)
2724 if(peer->compress == CPRS_ZLIB)
2726 cstr = peer->cprsdata;
2727 cstr->next_in = NULL;
2731 cstr->next_out = outbuf;
2732 cstr->avail_out = sizeof(outbuf);
2733 ret = deflate(cstr, Z_FINISH);
2734 if((ret != Z_OK) && (ret != Z_STREAM_END))
2736 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2740 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2741 } while(ret != Z_STREAM_END);
2747 if(peer->timeout == NULL)
2748 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2749 peer->state = PEER_CMD;
2751 transfersetstate(transfer, TRNS_HS);
2752 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2753 transfer->flags.b.minislot = 0;
2754 peer->sk->writecb = NULL;
2761 static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2763 peer->state = PEER_SYNC;
2764 dctransgotdata(transfer, peer);
2767 static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2769 if(transferdatasize(transfer) < 65536)
2770 peer->sk->ignread = 0;
2773 static void transread(struct socket *sk, struct dcpeer *peer)
2777 struct transfer *transfer;
2779 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2781 if(peer->transfer == NULL)
2787 transferputdata(peer->transfer, buf, bufsize);
2789 if(peer->transfer->curpos >= peer->transfer->size)
2791 transfer = peer->transfer;
2792 transferdetach(transfer);
2793 transferendofdata(transfer);
2796 if(transferdatasize(peer->transfer) > 65535)
2800 static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2802 struct transfer *transfer;
2804 if((transfer = peer->transfer) == NULL)
2809 transferdetach(transfer);
2810 transferendofdata(transfer);
2813 static void transwrite(struct socket *sk, struct dcpeer *peer)
2815 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2817 if(peer->transfer == NULL)
2822 dctransgotdata(peer->transfer, peer);
2825 static void udpread(struct socket *sk, void *data)
2827 char *buf, *p, *p2, *hashbuf;
2828 size_t buflen, hashlen;
2829 char *nick, *filename, *hubname;
2830 struct sockaddr_in hubaddr;
2833 struct fnetnode *fn, *myfn;
2836 wchar_t *wnick, *wfile;
2839 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2841 buf = srealloc(buf, buflen + 1);
2843 if(!strncmp(buf, "$SR ", 4))
2847 if((p2 = strchr(p, ' ')) == NULL)
2855 if((p2 = strchr(p, 5)) == NULL)
2862 if((p2 = strchr(p, ' ')) == NULL)
2868 size = strtoll(p, NULL, 10);
2870 if((p2 = strchr(p, '/')) == NULL)
2878 if((p2 = strchr(p, 5)) == NULL)
2885 if((p2 = strstr(p, " (")) == NULL)
2892 if((p2 = strchr(p, ':')) == NULL)
2898 hubaddr.sin_family = AF_INET;
2899 if(!inet_aton(p, &hubaddr.sin_addr))
2905 if((p2 = strchr(p, ')')) == NULL)
2911 hubaddr.sin_port = htons(atoi(p));
2912 /* Use DCCHARSET in $Get paths until further researched... */
2913 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
2920 if(!strncmp(hubname, "TTH:", 4))
2922 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2925 hash = newhash(L"TTH", 24, hashbuf);
2929 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2931 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2933 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2948 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2950 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2952 if((hub->sk != NULL) && addreq(hub->sk->remote, (struct sockaddr *)&hubaddr))
2963 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2968 sr = newsrchres(&dcnet, wfile, wnick);
2969 if(sr->peernick != NULL)
2971 sr->peernick = swcsdup(wnick);
2977 getfnetnode(sr->fn = myfn);
2986 static void hubread(struct socket *sk, struct fnetnode *fn)
2989 struct command *cmd;
2991 size_t datalen, cnlen;
2994 hub = (struct dchub *)fn->data;
2995 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2997 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2999 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
3000 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
3003 hub->inbufdata += datalen;
3004 while((p - hub->inbuf < hub->inbufdata) && ((p2 = memchr(p, '|', hub->inbufdata - (p - hub->inbuf))) != NULL))
3007 for(cmd = hubcmds; cmd->handler != NULL; cmd++)
3009 cnlen = strlen(cmd->name);
3010 if(!strncmp(p, cmd->name, cnlen) && ((p[cnlen] == ' ') || (p[cnlen] == 0)))
3013 if((cmd->limit == 0) || (hub->queue.size < cmd->limit))
3014 newqcmd(&hub->queue, p);
3017 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
3018 if(hub->queue.size > 1000)
3022 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
3027 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
3033 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
3035 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
3040 if(hub == NULL) /* Not yet connected */
3045 if(hub->nativenick != NULL)
3046 free(hub->nativenick);
3047 hub->nativenick = buf;
3051 static struct dchub *newdchub(struct fnetnode *fn)
3058 new = smalloc(sizeof(*new));
3059 memset(new, 0, sizeof(*new));
3061 if(confgetint("dc", "dcppemu"))
3063 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3071 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3073 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3075 if(!havecharset(charset))
3083 new->charset = charset;
3085 new->charset = sstrdup(DCCHARSET);
3086 if(hubsetnick(fn, fn->mynick))
3087 fnetsetnick(fn, L"DoldaConnectUser-IN");
3088 /* IN as in Invalid Nick */
3092 static struct dcpeer *newdcpeer(struct socket *sk)
3096 new = smalloc(sizeof(*new));
3097 memset(new, 0, sizeof(*new));
3098 new->transfer = NULL;
3101 if(confgetint("dc", "dcppemu"))
3112 static void freedcpeer(struct dcpeer *peer)
3115 struct qcommand *qcmd;
3119 if(peer->next != NULL)
3120 peer->next->prev = peer->prev;
3121 if(peer->prev != NULL)
3122 peer->prev->next = peer->next;
3123 if(peer->transfer != NULL)
3125 if(peer->transfer->dir == TRNSD_UP)
3126 peer->transfer->close = 1;
3127 if(peer->transfer->dir == TRNSD_DOWN)
3128 resettransfer(peer->transfer);
3130 if(peer->timeout != NULL)
3131 canceltimer(peer->timeout);
3132 if(peer->sk->data == peer)
3133 peer->sk->data = NULL;
3134 peer->sk->readcb = NULL;
3135 peer->sk->writecb = NULL;
3136 peer->sk->errcb = NULL;
3139 if(peer->supports != NULL)
3141 for(i = 0; peer->supports[i] != NULL; i++)
3142 free(peer->supports[i]);
3143 free(peer->supports);
3145 if(peer->inbuf != NULL)
3147 if(peer->key != NULL)
3149 if(peer->wcsname != NULL)
3150 free(peer->wcsname);
3151 if(peer->nativename != NULL)
3152 free(peer->nativename);
3153 if(peer->charset != NULL)
3154 free(peer->charset);
3155 if(peer->fn != NULL)
3156 putfnetnode(peer->fn);
3157 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3163 static void hubconnect(struct fnetnode *fn, struct socket *sk)
3167 sk->readcb = (void (*)(struct socket *, void *))hubread;
3168 sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3169 fn->data = hub = newdchub(fn);
3171 getsock(hub->sk = sk);
3175 static void hubdestroy(struct fnetnode *fn)
3179 struct qcommand *qcmd;
3181 hub = (struct dchub *)fn->data;
3183 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3185 if(hub->supports != NULL)
3187 for(i = 0; hub->supports[i] != NULL; i++)
3188 free(hub->supports[i]);
3189 free(hub->supports);
3191 if(hub->nativename != NULL)
3192 free(hub->nativename);
3193 if(hub->nativenick != NULL)
3194 free(hub->nativenick);
3195 if(hub->charset != NULL)
3197 if(hub->inbuf != NULL)
3202 static void hubkill(struct fnetnode *fn)
3206 hub = (struct dchub *)fn->data;
3210 static struct transferiface dctransfer =
3212 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3213 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3214 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3215 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3218 static struct fnet dcnet =
3221 .connect = hubconnect,
3222 .destroy = hubdestroy,
3224 .setnick = hubsetnick,
3225 .reqconn = hubreqconn,
3226 .sendchat = hubsendchat,
3227 .search = hubsearch,
3230 static void peerread(struct socket *sk, struct dcpeer *peer)
3233 size_t datalen, cnlen;
3234 struct command *cmd;
3236 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3238 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3239 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3241 peer->inbufdata += datalen;
3242 if(peer->state == PEER_CMD)
3245 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3248 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3250 cnlen = strlen(cmd->name);
3251 if(!strncmp(peer->inbuf, cmd->name, cnlen) && ((peer->inbuf[cnlen] == ' ') || (peer->inbuf[cnlen] == 0)))
3254 if((cmd->limit == 0) || (peer->queue.size < cmd->limit))
3255 newqcmd(&peer->queue, peer->inbuf);
3256 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3259 peer->state = PEER_STOP;
3262 if(peer->queue.size > 50)
3266 } else if(peer->state == PEER_TTHL) {
3269 if(peer->inbufdata > 500000)
3273 static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3278 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3280 struct dcpeer *peer;
3290 peer = newdcpeer(sk);
3293 peer->dcppemu = hub->dcppemu;
3294 sk->readcb = (void (*)(struct socket *, void *))peerread;
3295 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3297 socksettos(sk, confgetint("fnet", "fnptos"));
3299 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3304 static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3306 struct dcpeer *peer;
3308 peer = newdcpeer(newsk);
3310 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3311 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3313 socksettos(newsk, confgetint("fnet", "fnptos"));
3314 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3317 static void updatehmlist(void)
3319 int i, lev, ic, ret;
3320 struct sharecache *node;
3321 char *buf, *buf2, numbuf[32];
3322 size_t bufsize, bufdata;
3327 buf = smalloc(bufsize = 65536);
3328 node = shareroot->child;
3333 /* Use DCCHARSET in $Get paths until further researched... */
3334 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3336 for(i = 0; i < lev; i++)
3338 bufcat(buf, buf2, strlen(buf2));
3340 if(node->f.b.type == FILE_REG)
3343 sprintf(numbuf, "%ji", (intmax_t)node->size);
3344 bufcat(buf, numbuf, strlen(numbuf));
3351 if((node->child != NULL) && !ic)
3355 } else if(node->next != NULL) {
3358 while(node->next == NULL)
3361 node = node->parent;
3362 if(node == shareroot)
3365 if(node == shareroot)
3370 if(hmlistname != NULL)
3375 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3376 if((fd = mkstemp(hmlistname)) < 0)
3378 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3382 out = fdopen(fd, "w");
3384 * I do not want to implement a good Huffman encoder, and it's not
3385 * like Huffman encoding actually yields any impressive results
3386 * for DC file lists anyway, so I'll just output a bogus
3387 * tree. Implement a good encoder if you want to.
3389 fwrite("HE3\r\0", 1, 5, out);
3390 fwrite(&bufdata, 4, 1, out); /* XXX: Endian unsafe */
3392 fwrite(&ibuf, 2, 1, out);
3394 for(i = 0; i < 256; i++)
3396 fwrite(&i, 1, 1, out);
3397 fwrite(&ibuf, 1, 1, out);
3399 for(i = 0; i < 256; i++)
3400 fwrite(&i, 1, 1, out);
3401 for(buf2 = buf; bufdata > 0;)
3403 if((ret = fwrite(buf2, 1, bufdata, out)) < 0)
3405 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3416 static struct xmlent
3423 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3427 static wchar_t *escapexml(wchar_t *src)
3429 static wchar_t *buf = NULL;;
3432 size_t bufsize, bufdata;
3438 bufsize = bufdata = 0;
3439 for(; *src != L'\0'; src++)
3442 if((c > 0) && (c < 32))
3444 bufcat(buf, L"&#", 2);
3445 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3446 bufcat(buf, nbuf, ret);
3447 addtobuf(buf, L';');
3449 for(ent = entities; ent->ent != NULL; ent++)
3453 bufcat(buf, ent->ent, wcslen(ent->ent));
3457 if(ent->ent == NULL)
3458 addtobuf(buf, *src);
3461 addtobuf(buf, L'\0');
3465 static void updatexmllist(void)
3469 char cidbuf[14], *namebuf;
3471 struct sharecache *node;
3473 if(xmllistname != NULL)
3475 unlink(xmllistname);
3478 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3479 if((fd = mkstemp(xmllistname)) < 0)
3481 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3486 if((fs = fdopen(fd, "w")) == NULL)
3488 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3489 unlink(xmllistname);
3495 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3496 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3497 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3499 if(confgetint("dc", "dcppemu"))
3500 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3502 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
3504 node = shareroot->child;
3508 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3510 for(i = 0; i < lev; i++)
3512 if(node->child != NULL)
3514 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3519 fprintf(fs, "<File Name=\"%s\" Size=\"%ji\"", namebuf, (intmax_t)node->size);
3520 if(node->f.b.hastth)
3522 hashbuf = base32encode(node->hashtth, 24);
3523 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3526 fprintf(fs, "/>\r\n");
3528 while(node->next == NULL)
3530 node = node->parent;
3531 if(node == shareroot)
3536 for(i = 0; i < lev; i++)
3538 fprintf(fs, "</Directory>\r\n");
3541 if(node == shareroot)
3547 if(confgetint("dc", "dcppemu"))
3548 fprintf(fs, "</FileListing>");
3550 fprintf(fs, "</FileListing>\r\n");
3554 static void updatexmlbz2list(void)
3563 if(xmllistname == NULL)
3565 if((in = fopen(xmllistname, "r")) == NULL)
3567 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3570 if(xmlbz2listname != NULL)
3572 unlink(xmlbz2listname);
3573 free(xmlbz2listname);
3575 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3576 if((fd = mkstemp(xmlbz2listname)) < 0)
3578 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3579 free(xmlbz2listname);
3580 xmlbz2listname = NULL;
3584 if((real = fdopen(fd, "w")) == NULL)
3586 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3588 unlink(xmlbz2listname);
3589 free(xmlbz2listname);
3590 xmlbz2listname = NULL;
3594 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3597 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3599 unlink(xmlbz2listname);
3600 free(xmlbz2listname);
3601 xmlbz2listname = NULL;
3607 bufdata = fread(buf, 1, sizeof(buf), in);
3608 BZ2_bzWrite(&err, out, buf, bufdata);
3611 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3615 static void listtimercb(int cancelled, void *uudata)
3617 listwritetimer = NULL;
3622 static void updatelists(int now)
3624 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3628 if(listwritetimer == NULL)
3629 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
3632 if(listwritetimer != NULL)
3633 canceltimer(listwritetimer);
3639 static int shareupdate(unsigned long long uusharesize, void *data)
3645 static char *quotestr(char *str)
3649 size_t bufsize, bufdata;
3651 static char *enc = NULL;
3652 size_t encsize, encdata;
3655 bufsize = bufdata = 0;
3656 for(p = (unsigned char *)str; *p; p++)
3659 bufcat(buf, "\\b", 2);
3661 bufcat(buf, "\\t", 2);
3663 bufcat(buf, "\\n", 2);
3665 bufcat(buf, "\\r", 2);
3667 bufcat(buf, "\\\\", 2);
3671 bprintf(buf, "\\x%02x", *p);
3677 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3679 enc = icwcstombs(wbuf, NULL);
3684 encsize = encdata = 0;
3685 for(p = buf; *p; p++) {
3689 bprintf(buf, "\\x%x", *p);
3696 static void logunimpl(char *list, char *cmd, char *args)
3700 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3702 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3707 fputs(quotestr(cmd), log);
3711 fputs(quotestr(args), log);
3717 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3720 struct command *cmd;
3722 if((p = strchr(qcmd->string, ' ')) != NULL)
3724 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3726 if(!strcmp(cmd->name, qcmd->string))
3729 if(cmd->handler != NULL)
3731 cmd->handler(sk, data, qcmd->string, p);
3732 } else if(confgetint("dc", "logunimpl")) {
3733 if(cmdlist == hubcmds)
3734 logunimpl("hub", qcmd->string, p);
3735 else if(cmdlist == peercmds)
3736 logunimpl("peer", qcmd->string, p);
3738 logunimpl("other?!", qcmd->string, p);
3742 static int run(void)
3744 struct fnetnode *fn, *nextfn;
3746 struct dcpeer *peer, *nextpeer;
3747 struct qcommand *qcmd;
3752 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3755 if(fn->fnet != &dcnet)
3757 if(fn->data == NULL)
3759 hub = (struct dchub *)fn->data;
3760 while((quota > 0) && ((qcmd = ulqcmd(&hub->queue)) != NULL))
3762 if(*qcmd->string == '$')
3764 if((hub->sk != NULL) && (hub->sk->state == SOCK_EST))
3765 dispatchcommand(qcmd, hubcmds, hub->sk, fn);
3766 } else if(*qcmd->string != 0) {
3767 hubrecvchat(hub->sk, fn, NULL, qcmd->string);
3773 if(hub->queue.size < 1000)
3774 hub->sk->ignread = 0;
3779 for(peer = peers; peer != NULL; peer = peer->next)
3781 while(!peer->close && (quota > 0) && ((qcmd = ulqcmd(&peer->queue)) != NULL))
3783 if(peer->timeout != NULL)
3784 canceltimer(peer->timeout);
3785 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3786 if(*qcmd->string == '$')
3787 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3792 if((peer->queue.size < 50) && (peer->inbufdata < 500000))
3793 peer->sk->ignread = 0;
3797 for(peer = peers; peer != NULL; peer = nextpeer)
3799 nextpeer = peer->next;
3806 static void preinit(int hup)
3813 static int updateudpport(struct configvar *var, void *uudata)
3815 struct sockaddr_in addr;
3816 struct socket *newsock;
3818 memset(&addr, 0, sizeof(addr));
3819 addr.sin_family = AF_INET;
3820 addr.sin_port = htons(var->val.num);
3821 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3823 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3826 newsock->readcb = udpread;
3833 static int updatetcpport(struct configvar *var, void *uudata)
3835 struct sockaddr_in addr;
3836 struct socket *newsock;
3838 memset(&addr, 0, sizeof(addr));
3839 addr.sin_family = AF_INET;
3840 addr.sin_port = htons(var->val.num);
3841 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3842 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3849 static int init(int hup)
3851 struct sockaddr_in addr;
3855 GCBREG(sharechangecb, shareupdate, NULL);
3860 addr.sin_family = AF_INET;
3861 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3862 addr.sin_port = htons(confgetint("dc", "udpport"));
3863 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3865 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3868 udpsock->readcb = udpread;
3869 addr.sin_port = htons(confgetint("dc", "tcpport"));
3870 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3871 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3872 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3873 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3874 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3879 static void terminate(void)
3881 if(hmlistname != NULL)
3886 if(xmllistname != NULL)
3888 unlink(xmllistname);
3891 if(xmlbz2listname != NULL)
3893 unlink(xmlbz2listname);
3894 free(xmlbz2listname);
3898 static struct configvar myvars[] =
3900 /** Specifies the share description reported to other DC users. */
3901 {CONF_VAR_STRING, "desc", {.str = L""}},
3902 /** Specifies the speed reported to other DC users. Normal values
3903 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3904 * LAN(T1) or LAN(T3)*/
3905 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3906 /** The e-mail address to report to other DC users. */
3907 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3908 /** Specifies a specific UDP port to use for DC search results. If
3909 * left unspecified, a port is allocated dynamically. Useful for
3910 * NAT routers (see also the net.visibleipv4 address for those
3912 {CONF_VAR_INT, "udpport", {.num = 0}},
3913 /** Specifies a specific TCP port to use for DC peer
3914 * connections. If left unspecified, a port is allocated
3915 * dynamically. Useful for NAT routers (see also the
3916 * net.visibleipv4 address for those cases). */
3917 {CONF_VAR_INT, "tcpport", {.num = 0}},
3918 /** If set to true, doldacond will do its best to emulate DC++
3919 * (currently v0.674). This should be left off if at all possible,
3920 * since turning it on will violate the rules of most hubs and
3921 * thus give hub owners an actual reason to kick you if it is
3922 * detected. It might be needed for some of the more bone-headed
3923 * hub owners, though. Note that DC++ emulation can also be turned
3924 * on or off for individual hubs, overriding this setting. */
3925 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
3926 /** Use for debugging. If set to true, doldacond will log all
3927 * unknown commands it receives, and their arguments, to
3928 * /tmp/dc-unimpl. */
3929 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
3930 /** If set to true, doldacond will hide its support for deflate
3931 * compression of transfers from other clients, so that they will
3932 * not request compressed uploads. Compressed transfers may
3933 * consume a non-trivial amount of CPU time on slower machines. */
3934 {CONF_VAR_BOOL, "hidedeflate", {.num = 0}},
3938 static struct module me =
3947 .terminate = terminate,