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
26 #include <netinet/in.h>
27 #include <arpa/inet.h>
45 #include "sysevents.h"
50 * The Direct Connect protocol is extremely ugly. Thus, this code must
51 * also be a bit ugly in certain places. Please forgive me. =/
53 * This also means that there might be some pieces of the code that
54 * look completely illogical to you, and you think that you may make
55 * them much neater/better. However, in many cases it might just be
56 * that it's required to cope with some oddity of the protocol, such
57 * as the amazingly ugly delayed key response in the peer protocol.
60 /* I assume this is the correct character set to use for DC,
61 * considering it was developed without i18n support under Windows */
62 #define DCCHARSET "windows-1252"
64 #ifdef DCPP_MASQUERADE
66 * I honestly don't want to pretend being a client that I'm not, but
67 * there are so many hubs that simply do not accept any clients
68 * outside their whitelists, for no obvious reasons, so I feel that I
69 * am left with little choice. Anyhow, as long as I actually support
70 * all the features that my faked DC++ version does, there should be
71 * very little harm done.
74 #define DCIDTAGV "0.674"
75 #define DCIDFULL "DC++ 0.674"
77 #define DCIDTAG "Dolda"
78 #define DCIDTAGV VERSION
79 #define DCIDFULL "DoldaConnect " VERSION
94 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
100 struct qcommand *next;
107 size_t inbufdata, inbufsize;
108 struct qcommand *queue;
109 int extended, dcppemu;
117 struct dcexppeer *next, *prev;
120 struct timer *expire;
125 struct dcpeer *next, *prev;
129 size_t inbufdata, inbufsize;
130 size_t curread, totalsize;
132 struct timer *timeout;
133 struct qcommand *queue;
134 struct transfer *transfer;
136 int ptclose; /* Close after transfer is complete */
137 int accepted; /* If false, we connected, otherwise, we accepted */
138 int extended, dcppemu;
139 int direction; /* Using the constants from transfer.h */
141 int hascurpos, fetchingtthl, notthl;
142 struct tigertreehash tth;
151 static struct fnet dcnet;
152 static struct transferiface dctransfer;
153 static struct socket *udpsock = NULL;
154 static struct socket *tcpsock = NULL;
155 static struct dcpeer *peers = NULL;
157 static struct dcexppeer *expected = NULL;
158 static char *hmlistname = NULL;
159 static char *xmllistname = NULL;
160 static char *xmlbz2listname = NULL;
161 static struct timer *listwritetimer = NULL;
163 static int peerconnect(struct socket *sk, int err, struct fnetnode *fn);
164 static int peerread(struct socket *sk, struct dcpeer *peer);
165 static int peererror(struct socket *sk, int err, struct dcpeer *peer);
166 static void freedcpeer(struct dcpeer *peer);
167 static void transread(struct dcpeer *peer);
168 static void transerr(struct dcpeer *peer);
169 static int transwrite(struct socket *sk, struct dcpeer *peer);
170 static void updatehmlist(void);
171 static void updatexmllist(void);
172 static void updatexmlbz2list(void);
173 static void requestfile(struct dcpeer *peer);
174 static void updatelists(int now);
176 static int reservedchar(unsigned char c)
178 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
181 /* Oh, how I despise having to do this... */
182 static char *dcmakekey(char *lock)
188 buf = smalloc(strlen(lock));
191 for(i = 0; lock[i]; i++)
193 buf[i] = lock[i] ^ save;
194 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
196 if((i != 0) && reservedchar(buf[i]))
201 buf[0] ^= buf[i - 1];
202 if(reservedchar(buf[0]))
206 key = smalloc(len + 1);
208 for(i = 0; lock[i] != 0; i++)
210 if(reservedchar(buf[i]))
211 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
213 key[offset++] = buf[i];
220 static char *pathnmdc2adc(char *path)
223 size_t retsize, retdata;
225 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
226 return(sstrdup(path));
228 retsize = retdata = 0;
235 addtobuf(ret, *path);
241 static int isdchash(struct hash *hash)
243 if(wcscmp(hash->algo, L"TTH"))
250 static int supports(struct dcpeer *peer, char *cap)
254 if(peer->supports == NULL)
256 for(p = peer->supports; *p != NULL; p++)
258 if(!strcasecmp(*p, cap))
264 static void endcompress(struct dcpeer *peer)
266 if(peer->compress == CPRS_ZLIB)
268 deflateEnd(peer->cprsdata);
269 free(peer->cprsdata);
271 peer->compress = CPRS_NONE;
274 static void initcompress(struct dcpeer *peer, int algo)
279 peer->compress = algo;
280 if(algo == CPRS_ZLIB)
282 peer->cprsdata = smalloc(sizeof(z_stream));
283 memset(peer->cprsdata, 0, sizeof(z_stream));
284 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
286 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
292 static void unquote(wchar_t *in)
296 for(p = in; *p != L'\0'; p++)
300 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
307 if(!wcscmp(p + 1, L"amp"))
310 } else if(p[1] == L'#') {
311 nc = ucptowc(wcstol(p + 2, NULL, 10));
320 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
325 static void freeexppeer(struct dcexppeer *ep)
328 ep->next->prev = ep->prev;
330 ep->prev->next = ep->next;
335 if(ep->expire != NULL)
336 canceltimer(ep->expire);
340 static void exppeerexpire(int cancelled, struct dcexppeer *ep)
347 static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
349 struct dcexppeer *ep;
351 ep = smalloc(sizeof(*ep));
352 ep->nick = sstrdup(nick);
353 getfnetnode(ep->fn = fn);
354 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
363 static struct qcommand *newqcmd(struct qcommand **queue, char *string)
365 struct qcommand *new;
367 while(*queue != NULL)
368 queue = &(*queue)->next;
369 new = smalloc(sizeof(*new));
370 new->string = sstrdup(string);
376 static struct qcommand *ulqcmd(struct qcommand **queue)
378 struct qcommand *qcmd;
380 if((qcmd = *queue) == NULL)
386 static void freeqcmd(struct qcommand *qcmd)
392 static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
394 wchar_t *chat, *wfrom, *wpeer;
396 struct fnetpeer *peer;
400 end = string + strlen(string);
401 while((p = strchr(string, 13)) != NULL)
402 memmove(p, p + 1, (end-- - p));
405 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
406 string += strlen(from) + 2;
407 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
409 wpeer = swcsdup(wfrom);
415 for(p = string + 1; *p; p++)
417 if((*p == ' ') || (*p == '>'))
425 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
431 wpeer = swcsdup(L"");
433 if((chat = icmbstowcs(string, hub->charset)) == NULL)
443 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
444 fnethandlechat(fn, 1, wfrom, wpeer, chat);
446 fnethandlechat(fn, 0, wfrom, wpeer, chat);
448 fnethandlechat(fn, 1, L"", wpeer, chat);
456 static void peertimeout(int cancelled, struct dcpeer *peer)
458 peer->timeout = NULL;
464 static void sendadc(struct socket *sk, char *arg)
467 size_t bufsize, bufdata;
470 bufsize = bufdata = 0;
476 bufcat(buf, "\\s", 2);
477 } else if(*arg == '\n') {
478 bufcat(buf, "\\n", 2);
479 } else if(*arg == '\\') {
480 bufcat(buf, "\\\\", 2);
485 sockqueue(sk, buf, bufdata);
489 static void sendadcf(struct socket *sk, char *arg, ...)
495 buf = vsprintf2(arg, args);
503 static char **parseadc(char *args)
506 size_t retbufsize, retbufdata;
508 size_t bufsize, bufdata;
513 retbufsize = retbufdata = bufsize = bufdata = 0;
522 else if(*args != ' ')
526 if((*args == ' ') || (*args == 0))
529 addtobuf(retbuf, buf);
531 bufsize = bufdata = 0;
534 } else if(*args == '\\') {
537 addtobuf(buf, *args);
546 addtobuf(retbuf, NULL);
549 } else if((*args == 's') || (*args == ' ')) {
551 } else if(*args == 'n') {
553 } else if(*args == '\\') {
563 addtobuf(retbuf, NULL);
567 /* Macros useful in command handlers */
568 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
569 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
570 #define qstrf(sk, strandargs...) \
573 if((__buf__ = sprintf2(strandargs)) != NULL) { \
574 sockqueue(sk, __buf__, strlen(__buf__)); \
579 static char *tr(char *str, char *trans)
583 for(; *trans; trans += 2)
585 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
591 static char *getadcid(struct dcpeer *peer)
598 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
600 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
602 buf = base32encode(peer->transfer->hash->buf, 24);
603 ret = sprintf2("TTH/%.39s", buf);
606 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
608 ret = pathnmdc2adc(buf);
615 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
617 if(!wcscmp(cmd, L"resume"))
621 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
624 transfer->curpos = wcstol(arg, NULL, 10);
633 static void sendmynick(struct dcpeer *peer)
639 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
641 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
644 static void sendpeerlock(struct dcpeer *peer)
647 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
649 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
652 static void sendsupports(struct dcpeer *peer)
655 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
657 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
660 static void requestfile(struct dcpeer *peer)
664 if(peer->transfer->size == -1)
666 /* Use DCCHARSET for $Get paths until further researched... */
667 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
669 transferseterror(peer->transfer, TRNSE_NOTFOUND);
673 /* The transfer will be restarted later from
674 * cmd_filelength when it detects that the sizes
676 qstrf(peer->sk, "$Get %s$1|", buf);
679 if((peer->transfer->hash == NULL) && !peer->notthl)
681 if(supports(peer, "adcget") && supports(peer, "tthl"))
683 qstr(peer->sk, "$ADCGET");
684 sendadc(peer->sk, "tthl");
685 if((buf = getadcid(peer)) == NULL)
687 transferseterror(peer->transfer, TRNSE_NOTFOUND);
691 sendadc(peer->sk, buf);
693 sendadc(peer->sk, "0");
694 sendadc(peer->sk, "-1");
696 peer->fetchingtthl = 1;
702 if(forkfilter(peer->transfer))
704 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
708 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
711 if(supports(peer, "adcget"))
713 qstr(peer->sk, "$ADCGET");
714 sendadc(peer->sk, "file");
715 if((buf = getadcid(peer)) == NULL)
717 transferseterror(peer->transfer, TRNSE_NOTFOUND);
721 sendadc(peer->sk, buf);
723 sendadcf(peer->sk, "%i", peer->transfer->curpos);
724 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
726 } else if(supports(peer, "xmlbzlist")) {
727 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
729 transferseterror(peer->transfer, TRNSE_NOTFOUND);
733 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
735 /* Use DCCHARSET for $Get paths until further researched... */
736 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
738 transferseterror(peer->transfer, TRNSE_NOTFOUND);
742 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
746 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
750 struct fnetnode *cfn;
754 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
755 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
756 qstrf(sk, "%s", buf);
758 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
760 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
762 if(cfn->regstatus == FNNS_OP)
764 else if(cfn->regstatus == FNNS_REG)
770 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
771 (hub->dcppemu)?"++":"Dolda",
772 (hub->dcppemu)?"0.674":VERSION,
773 (tcpsock == NULL)?'P':'A',
775 confgetint("transfer", "slots")
778 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
779 qstrf(sk, "%s\x01$", buf);
780 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
781 qstrf(sk, "%s$", buf);
782 qstrf(sk, "%llu$|", sharesize);
785 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
790 if(!strcmp(cmd, "$Lock"))
792 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
793 } else if(!strcmp(cmd, "$Hello")) {
794 if(fn->state == FNN_HS)
796 qstrf(sk, "$Version 1,0091|");
797 qstrf(sk, "$GetNickList|");
799 fnetsetstate(fn, FNN_EST);
801 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
806 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
813 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
815 if((p = strchr(args, ' ')) != NULL)
820 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
822 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
824 key = dcmakekey(args);
825 qstrf(sk, "$Key %s|", key);
827 hubhandleaction(sk, fn, cmd, args);
830 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
836 if(hub->nativename == NULL)
837 free(hub->nativename);
838 hub->nativename = sstrdup(args);
839 buf = icmbstowcs(args, hub->charset);
840 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
843 hubhandleaction(sk, fn, cmd, args);
846 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
852 if((nick = icmbstowcs(args, hub->charset)) == NULL)
854 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
855 fnetaddpeer(fn, nick, nick);
857 hubhandleaction(sk, fn, cmd, args);
860 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
863 struct fnetpeer *peer;
867 if((nick = icmbstowcs(args, hub->charset)) == NULL)
869 if((peer = fnetfindpeer(fn, nick)) != NULL)
872 hubhandleaction(sk, fn, cmd, args);
875 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
880 struct fnetpeer *peer, *npeer;
883 for(peer = fn->peers; peer != NULL; peer = peer->next)
884 peer->flags.b.delete = 1;
885 while((p = strstr(args, "$$")) != NULL)
888 if((buf = icmbstowcs(args, hub->charset)) != NULL)
890 if((peer = fnetfindpeer(fn, buf)) == NULL)
891 peer = fnetaddpeer(fn, buf, buf);
893 peer->flags.b.delete = 0;
895 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
899 for(peer = fn->peers; peer != NULL; peer = npeer)
902 if(peer->flags.b.delete)
905 hubhandleaction(sk, fn, cmd, args);
908 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
913 struct fnetpeer *peer;
916 for(peer = fn->peers; peer != NULL; peer = peer->next)
917 peer->flags.b.op = 0;
918 while((p = strstr(args, "$$")) != NULL)
921 if((buf = icmbstowcs(args, hub->charset)) != NULL)
923 if((peer = fnetfindpeer(fn, buf)) != NULL)
924 peer->flags.b.op = 1;
929 hubhandleaction(sk, fn, cmd, args);
932 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
935 wchar_t *buf, *wp, *wp2;
937 struct fnetpeer *peer;
942 if(strncmp(p, "$ALL ", 5))
945 if((p2 = strchr(p, ' ')) == NULL)
948 if((buf = icmbstowcs(p, hub->charset)) == NULL)
950 if((peer = fnetfindpeer(fn, buf)) == NULL)
951 peer = fnetaddpeer(fn, buf, buf);
954 if((p2 = strstr(p, "$ $")) == NULL)
957 if((buf = icmbstowcs(p, hub->charset)) == NULL)
959 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
961 buf[wcslen(buf) - 1] = L'\0';
963 if((wp2 = wcschr(wp, L' ')) != NULL)
966 fnetpeersetstr(peer, L"dc-client", wp);
970 if((wp2 = wcschr(wp, L',')) != NULL)
974 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
975 fnetpeersetstr(peer, abuf, wp + 2);
977 } while(wp2 != NULL);
980 fnetpeersetstr(peer, L"descr", buf);
983 if((p2 = strchr(p, '$')) == NULL)
986 if((buf = icmbstowcs(p, hub->charset)) == NULL)
988 fnetpeersetstr(peer, L"dc-speed", buf);
991 if((p2 = strchr(p, '$')) == NULL)
994 if((buf = icmbstowcs(p, hub->charset)) == NULL)
996 fnetpeersetstr(peer, L"email", buf);
1001 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1002 hubhandleaction(sk, fn, cmd, args);
1005 /* I do not implement the fully in that I do not disconnect from the
1006 * old hub. I do this since I believe that if the hub owner really
1007 * wants to get rid of us, then it is his responsibility to disconnect
1009 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1012 struct fnetnode *newfn;
1016 if(strchr(args, ':') == NULL)
1018 args = strcpy(smalloc(strlen(args) + 5), args);
1019 strcat(args, ":411");
1024 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
1026 linkfnetnode(newfn);
1029 hubhandleaction(sk, fn, cmd, args);
1034 static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
1039 if(node->parent == NULL)
1041 if(node->parent == shareroot)
1043 if((buf = icwcstombs(node->name, charset)) == NULL)
1046 *retlen = strlen(buf);
1049 if((buf2 = icwcstombs(node->name, charset)) == NULL)
1051 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
1056 len2 = strlen(buf2);
1057 buf = srealloc(buf, len + 1 + len2 + 1);
1059 strcpy(buf + len, buf2);
1060 buf[len + len2] = 0;
1063 *retlen = len + len2;
1069 * This is the main share searching function for Direct Connect
1070 * peers. Feel free to optimize it if you feel the need for it. I
1071 * haven't ever seen it take any noticable CPU time anyway, so I
1072 * haven't felt that need.
1074 * It may feel dubious to just return the directory when all terms are
1075 * satisfied rather than all the files in it, but it really benefits
1076 * everyone: Less cycles used for us, less UDP squelching for active
1077 * searchers, and less bandwidth waste for hubs when serving passive
1080 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1085 char *prefix, *infix, *postfix, *buf, *buf2;
1087 struct sockaddr_in addr;
1088 struct sharecache *node;
1089 int minsize, maxsize;
1092 int termnum, satisfied, skipcheck;
1093 int level, tersat[32];
1098 if((p = strchr(args, ' ')) == NULL)
1102 memset(terms, 0, sizeof(terms));
1103 prefix = infix = postfix = NULL;
1107 if(!strncmp(args, "Hub:", 4))
1109 if(!strcmp(cmd, "$MultiSearch"))
1111 if(!strcmp(args + 4, hub->nativenick))
1113 prefix = sprintf2("$SR %s ", hub->nativenick);
1114 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1115 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1119 if((p2 = strchr(args, ':')) == NULL)
1122 addr.sin_family = AF_INET;
1123 if(!inet_aton(args, &addr.sin_addr))
1125 addr.sin_port = htons(atoi(p2));
1126 prefix = sprintf2("$SR %s ", hub->nativenick);
1127 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1128 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1129 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1132 minsize = maxsize = -1;
1141 if((*(p++) == 'T') && (minsize == 0))
1148 if((p2 = strchr(p, '?')) == NULL)
1163 if((*p2 == 0) || (*p2 == '$'))
1171 if(!dotth && !strncmp(p, "TTH:", 4))
1174 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1179 memcpy(hashtth, buf, 24);
1182 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
1193 node = shareroot->child;
1195 for(i = 0; i < termnum; i++)
1201 if(node->f.b.type == FILE_REG)
1203 if((minsize >= 0) && (node->size < minsize))
1205 if((maxsize >= 0) && (node->size > maxsize))
1208 if(!skipcheck && dotth)
1210 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1215 for(i = 0; i < termnum; i++)
1219 if(wcsexists(node->name, terms[i]))
1223 } else if(node->child == NULL) {
1228 if(!skipcheck && (satisfied == termnum))
1230 /* Use DCCHARSET in $Get paths until further researched... */
1231 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
1233 if(node->f.b.hastth)
1235 buf2 = base32encode(node->hashtth, 24);
1236 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1239 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1244 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1246 while(node->next == NULL)
1248 if((node = node->parent) == shareroot)
1252 if(node == shareroot)
1254 for(i = 0; i < termnum; i++)
1256 if(tersat[i] >= level)
1269 hubhandleaction(sk, fn, cmd, args);
1280 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1284 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1288 struct socket *newsk;
1289 struct sockaddr_in addr;
1292 if((p = strchr(args, ' ')) == NULL)
1295 if(strcmp(args, hub->nativenick))
1297 addr.sin_family = AF_INET;
1299 if((p = strchr(args, ':')) == NULL)
1302 addr.sin_port = htons(atoi(p));
1303 if(!inet_aton(args, &addr.sin_addr))
1305 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (int (*)(struct socket *, int, void *))peerconnect, fn);
1307 hubhandleaction(sk, fn, cmd, args);
1310 static void sendctm(struct socket *sk, char *nick)
1312 struct sockaddr *addr;
1317 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
1319 if(addr->sa_family == AF_INET)
1320 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1322 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1326 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1332 if((p = strchr(args, ' ')) == NULL)
1335 if(strcmp(p, hub->nativenick))
1338 expectpeer(args, fn);
1339 hubhandleaction(sk, fn, cmd, args);
1342 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1345 struct fnetnode *node;
1350 for(node = fnetnodes; node != NULL; node = node->next)
1352 if(node->state == FNN_EST)
1355 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1356 hubhandleaction(sk, fn, cmd, args);
1359 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1366 if((p2 = strchr(p, ' ')) == NULL)
1370 if((p2 = strchr(p, ' ')) == NULL)
1373 if(strcmp(p, "From:"))
1376 if((p2 = strstr(p, " $")) == NULL)
1380 hubrecvchat(fn->sk, fn, p, p2);
1381 hubhandleaction(sk, fn, cmd, args);
1384 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1388 char *nick, *filename, *hubname;
1392 wchar_t *wnick, *wfile;
1396 if((p2 = strchr(p, ' ')) == NULL)
1401 if((p2 = strchr(p, 5)) == NULL)
1405 if((p2 = strchr(p, ' ')) == NULL)
1410 if((p2 = strchr(p, '/')) == NULL)
1415 if((p2 = strchr(p, 5)) == NULL)
1419 if((p2 = strstr(p, " (")) == NULL)
1422 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
1424 /* Use DCCHARSET in $Get paths until further researched... */
1425 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1430 sr = newsrchres(&dcnet, wfile, wnick);
1431 if(sr->peernick != NULL)
1433 sr->peernick = swcsdup(wnick);
1438 if(!strncmp(hubname, "TTH:", 4))
1440 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1443 sr->hash = newhash(L"TTH", 24, buf);
1447 getfnetnode(sr->fn = fn);
1450 hubhandleaction(sk, fn, cmd, args);
1453 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1455 /* Do nothing for now. */
1458 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1465 pw = wpfind(fn->args, L"password");
1466 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
1471 qstrf(sk, "$MyPass %s|", mbspw);
1473 fn->regstatus = FNNS_REG;
1474 hubhandleaction(sk, fn, cmd, args);
1477 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1482 fn->regstatus = FNNS_OP;
1483 hubhandleaction(sk, fn, cmd, args);
1486 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1488 struct dcexppeer *expect;
1491 if(peer->nativename != NULL)
1492 free(peer->nativename);
1493 peer->nativename = sstrdup(args);
1494 if(peer->wcsname != NULL)
1495 free(peer->wcsname);
1496 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
1503 for(expect = expected; expect != NULL; expect = expect->next)
1505 if(!strcmp(expect->nick, args))
1512 hub = expect->fn->data;
1513 peer->fn = expect->fn;
1514 getfnetnode(peer->fn);
1515 peer->dcppemu = hub->dcppemu;
1516 freeexppeer(expect);
1521 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1525 struct transfer *transfer;
1527 if((p = strchr(args, ' ')) == NULL)
1530 if(!strcmp(args, "Upload"))
1532 if(!strcmp(args, "Download"))
1536 if((peer->transfer == NULL) || (mydir != peer->direction))
1541 if(peer->direction == TRNSD_DOWN)
1544 if(peer->wcsname == NULL)
1549 peer->direction = mydir;
1550 if(peer->direction == TRNSD_UP)
1552 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1557 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1559 if((transfer = finddownload(peer->wcsname)) == NULL)
1564 transferattach(transfer, &dctransfer, peer);
1565 transfersetstate(transfer, TRNS_HS);
1567 transfersetnick(transfer, peer->wcsname);
1568 peer->transfer = transfer;
1571 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1572 if(peer->key != NULL)
1573 qstrf(sk, "$Key %s|", peer->key);
1574 if(peer->direction == TRNSD_DOWN)
1579 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1582 struct transfer *transfer;
1584 if((p = strchr(args, ' ')) == NULL)
1587 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1589 key = dcmakekey(args);
1592 if(peer->wcsname == NULL)
1601 if((transfer = finddownload(peer->wcsname)) == NULL)
1603 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1608 peer->direction = TRNSD_UP;
1609 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1611 peer->direction = TRNSD_DOWN;
1612 transferattach(transfer, &dctransfer, peer);
1613 transfersetstate(transfer, TRNS_HS);
1615 transfersetnick(transfer, peer->wcsname);
1616 peer->transfer = transfer;
1617 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1618 qstrf(sk, "$Key %s|", key);
1621 if(peer->key != NULL)
1627 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1632 static void startdl(struct dcpeer *peer)
1634 if(peer->timeout != NULL)
1635 canceltimer(peer->timeout);
1636 peer->state = PEER_TRNS;
1637 transferstartdl(peer->transfer, peer->sk);
1640 static void startul(struct dcpeer *peer)
1642 if(peer->timeout != NULL)
1643 canceltimer(peer->timeout);
1644 peer->state = PEER_TRNS;
1645 transferstartul(peer->transfer, peer->sk);
1646 CBREG(peer->sk, socket_write, (int (*)(struct socket *, void *))transwrite, NULL, peer);
1649 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1652 struct transfer *transfer;
1654 if(peer->transfer == NULL)
1660 if(peer->transfer->size != size)
1662 transfersetsize(peer->transfer, size);
1663 transfer = peer->transfer;
1665 trytransferbypeer(transfer->fnet, transfer->peerid);
1669 qstr(peer->sk, "$Send|");
1672 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1674 if(peer->fetchingtthl)
1676 peer->fetchingtthl = 0;
1681 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1683 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1684 resettransfer(peer->transfer);
1690 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1692 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1694 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1695 resettransfer(peer->transfer);
1708 {"MyList.DcLst", &hmlistname, updatehmlist},
1709 {"files.xml", &xmllistname, updatexmllist},
1710 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1714 static int openfilelist(char *name)
1719 for(i = 0; lists[i].name != NULL; i++)
1721 if(!strcmp(name, lists[i].name))
1725 if(lists[i].name == NULL)
1728 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1730 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1733 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1740 static struct sharecache *findbytth(char *tth32)
1744 struct sharecache *node;
1746 if((buf = base32decode(tth32, &buflen)) == NULL)
1753 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1755 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1762 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1764 struct sharecache *node;
1771 if((p2 = strchr(p, sep)) != NULL)
1773 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1780 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1785 struct sharecache *node;
1786 struct socket *lesk;
1790 if(peer->transfer == NULL)
1795 if((p = strchr(args, '$')) == NULL)
1801 if((offset = (atoi(p) - 1)) < 0)
1806 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1808 qstr(sk, "$Error Could not send file list|");
1811 } else if(fd >= 0) {
1812 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1813 transfersetpath(peer->transfer, buf2);
1814 peer->transfer->flags.b.minislot = 1;
1818 /* Use DCCHARSET in $Get paths until further researched... */
1819 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1821 qstrf(sk, "$Error File not in share|");
1825 if((fd = opensharecache(node)) < 0)
1827 qstrf(sk, "$Error %s|", strerror(errno));
1831 buf = getfspath(node);
1832 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1833 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1835 transfersetpath(peer->transfer, buf2);
1838 if(fstat(fd, &sb) < 0)
1841 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1842 qstrf(sk, "$Error|");
1846 if(sb.st_size < 65536)
1847 peer->transfer->flags.b.minislot = 1;
1848 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1850 qstr(sk, "$MaxedOut|");
1854 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1857 qstrf(sk, "$Error Offset out of range|");
1861 lesk = wrapsock(fd);
1862 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1864 qstrf(sk, "$FileLength %i|", peer->transfer->size);
1867 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1869 if(peer->transfer == NULL)
1874 if(peer->transfer->localend == NULL)
1883 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1888 size_t arrsize, arrdata;
1890 if(peer->supports != NULL)
1892 for(i = 0; peer->supports[i] != NULL; i++)
1893 free(peer->supports[i]);
1894 free(peer->supports);
1897 arrsize = arrdata = 0;
1901 if((p2 = strchr(p, ' ')) != NULL)
1905 addtobuf(arr, sstrdup(p));
1906 } while((p = p2) != NULL);
1907 addtobuf(arr, NULL);
1908 peer->supports = arr;
1911 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1915 int start, numbytes;
1916 char *charset, *buf;
1918 struct sharecache *node;
1920 struct socket *lesk;
1922 if(peer->transfer == NULL)
1928 if((p2 = strchr(p, ' ')) == NULL)
1936 if((p2 = strchr(p, ' ')) == NULL)
1944 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1947 /* Use DCCHARSET in $Get paths until further researched... */
1948 charset = DCCHARSET;
1949 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1950 initcompress(peer, CPRS_ZLIB);
1951 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1953 qstr(sk, "$Error Could not send file list|");
1955 } else if(fd >= 0) {
1956 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1957 transfersetpath(peer->transfer, buf2);
1958 peer->transfer->flags.b.minislot = 1;
1962 if((node = resdcpath(p, charset, '\\')) == NULL)
1964 qstr(sk, "$Error File not in cache|");
1967 if((fd = opensharecache(node)) < 0)
1969 qstrf(sk, "$Error %s|", strerror(errno));
1972 buf = getfspath(node);
1973 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1974 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1976 transfersetpath(peer->transfer, buf2);
1979 if(fstat(fd, &sb) < 0)
1982 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1983 qstr(sk, "$Error|");
1986 if(sb.st_size < 65536)
1987 peer->transfer->flags.b.minislot = 1;
1988 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1990 qstr(sk, "$MaxedOut|");
1993 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1996 qstr(sk, "$Error Offset out of range|");
1999 if((numbytes < 0) || (start + numbytes > sb.st_size))
2000 numbytes = sb.st_size - start;
2001 lesk = wrapsock(fd);
2002 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2004 qstrf(sk, "$Sending %i|", numbytes);
2008 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2012 int start, numbytes;
2013 struct sharecache *node;
2015 struct socket *lesk;
2019 if(peer->transfer == NULL)
2024 if((argv = parseadc(args)) == NULL)
2029 if(parrlen(argv) < 4)
2034 start = atoi(argv[2]);
2035 numbytes = atoi(argv[3]);
2038 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2040 qstr(sk, "$Error Could not send file list|");
2042 } else if(fd >= 0) {
2043 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2044 transfersetpath(peer->transfer, wbuf);
2045 peer->transfer->flags.b.minislot = 1;
2049 if(!strncmp(argv[1], "TTH/", 4))
2051 if((node = findbytth(argv[1] + 4)) == NULL)
2053 qstr(sk, "$Error File not in cache|");
2057 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2059 qstr(sk, "$Error File not in cache|");
2063 if((fd = opensharecache(node)) < 0)
2065 qstrf(sk, "$Error %s|", strerror(errno));
2068 buf = getfspath(node);
2069 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2070 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2072 transfersetpath(peer->transfer, wbuf);
2075 if(!strcmp(argv[0], "file"))
2077 for(i = 4; argv[i] != NULL; i++)
2079 if(!strcmp(argv[i], "ZL1"))
2080 initcompress(peer, CPRS_ZLIB);
2082 if(fstat(fd, &sb) < 0)
2084 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2085 qstr(sk, "$Error|");
2088 if(sb.st_size < 65536)
2089 peer->transfer->flags.b.minislot = 1;
2090 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2091 qstr(sk, "$MaxedOut|");
2094 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2096 qstr(sk, "$Error Offset out of range|");
2099 if((numbytes < 0) || (start + numbytes > sb.st_size))
2100 numbytes = sb.st_size - start;
2101 lesk = wrapsock(fd);
2102 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2105 qstr(sk, "$ADCSND");
2106 sendadc(sk, "file");
2107 sendadc(sk, argv[1]);
2108 sendadcf(sk, "%i", start);
2109 sendadcf(sk, "%i", numbytes);
2110 if(peer->compress == CPRS_ZLIB)
2114 } else if(!strcmp(argv[0], "tthl")) {
2116 * XXX: Implement full TTHL support.
2118 * In the meantime, this is better than nothing, since it at
2119 * least allows fetching of the TTH root if it isn't already
2124 qstr(sk, "$Error no TTHL data for virtual files|");
2127 qstr(sk, "$ADCSND");
2128 sendadc(sk, "tthl");
2129 sendadc(sk, argv[1]);
2133 sockqueue(sk, node->hashtth, 24);
2135 qstr(sk, "$Error Namespace not implemented|");
2145 static void handletthl(struct dcpeer *peer)
2149 while(peer->inbufdata >= 24)
2151 pushtigertree(&peer->tth, peer->inbuf);
2152 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2153 peer->curread += 24;
2155 if(peer->curread >= peer->totalsize)
2157 if(peer->timeout == NULL)
2158 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2159 peer->state = PEER_CMD;
2160 synctigertree(&peer->tth);
2161 restigertree(&peer->tth, buf);
2162 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2167 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2170 int start, numbytes;
2172 if(peer->transfer == NULL)
2177 if((argv = parseadc(args)) == NULL)
2182 if(parrlen(argv) < 4)
2187 start = atoi(argv[2]);
2188 numbytes = atoi(argv[3]);
2189 if(!strcmp(argv[0], "tthl"))
2191 if((start != 0) || (numbytes % 24 != 0))
2193 /* Weird. Bail out. */
2197 if(peer->timeout != NULL)
2198 canceltimer(peer->timeout);
2199 peer->state = PEER_TTHL;
2200 peer->totalsize = numbytes;
2202 peer->fetchingtthl = 0;
2203 inittigertree(&peer->tth);
2205 } else if(!strcmp(argv[0], "file")) {
2206 if(start != peer->transfer->curpos)
2211 if(start + numbytes != peer->transfer->size)
2213 transfersetsize(peer->transfer, start + numbytes);
2220 /* We certainly didn't request this...*/
2229 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2233 if(peer->transfer == NULL)
2238 numbytes = atoi(args);
2239 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2241 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2251 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2256 hubhandleaction(sk, fn, cmd, args);
2260 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2266 static int hubreqconn(struct fnetpeer *peer)
2271 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2276 if((hub = peer->fn->data) == NULL)
2281 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
2282 return(1); /* Shouldn't happen, of course, but who knows... */
2285 sendctm(peer->fn->sk, mbsnick);
2286 expectpeer(mbsnick, peer->fn);
2288 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2294 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2297 char *mbsstring, *mbsto;
2300 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
2305 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
2310 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2317 if(strchr(mbsstring, '|') != NULL)
2328 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2330 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2333 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2340 static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2342 int minl, maxl, minr, maxr, retmin, retmax;
2347 findsizelimit(sexpr->l, &minl, &maxl);
2348 findsizelimit(sexpr->r, &minr, &maxr);
2349 retmin = (minl > minr)?minl:minr;
2350 if((maxl != -1) && (maxr != -1))
2351 retmax = (maxl < maxr)?maxl:maxr;
2360 findsizelimit(sexpr->l, &minl, &maxl);
2361 findsizelimit(sexpr->r, &minr, &maxr);
2362 retmin = (minl < minr)?minl:minr;
2363 if((maxl == -1) || (maxr == -1))
2366 retmax = (maxl > maxr)?maxl:maxr;
2369 findsizelimit(sexpr->l, &minl, &maxl);
2370 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2374 } else if((minl == 0) && (maxl != -1)) {
2377 } else if((minl != 0) && (maxl == -1)) {
2380 } else { /* This would yield two seperate intervals, which DC cannot handle */
2386 retmax = sexpr->d.n - 1;
2389 retmin = sexpr->d.n;
2390 retmax = sexpr->d.n;
2393 retmin = sexpr->d.n + 1;
2407 static struct hash *findsehash(struct sexpr *sexpr)
2409 struct hash *h1, *h2;
2414 if((h1 = findsehash(sexpr->l)) != NULL)
2416 if((h1 = findsehash(sexpr->r)) != NULL)
2420 if((h1 = findsehash(sexpr->l)) == NULL)
2422 if((h2 = findsehash(sexpr->r)) == NULL)
2428 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2429 return(sexpr->d.hash);
2436 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2439 struct wcslist *list, *cur;
2440 char *sstr, *buf, *p;
2441 size_t sstrsize, sstrdata;
2442 struct sockaddr *name;
2444 int minsize, maxsize;
2448 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2450 list = findsexprstrs(srch->sexpr);
2451 findsizelimit(srch->sexpr, &minsize, &maxsize);
2452 hash = findsehash(srch->sexpr);
2453 if((minsize != 0) && (maxsize != -1))
2455 /* Choose either minsize or maxsize by trying to determine
2456 * which choice will be most restrictive. The result can be
2457 * approximative at best anyway, so don't try too hard... */
2458 if((50000000 - maxsize) > (minsize - 50000000))
2464 sstrsize = sstrdata = 0;
2465 if((hash != NULL) && (hash->len == 24))
2467 /* Prioritize hash searches above all else */
2468 bufcat(sstr, "F?T?0?9?TTH:", 12);
2469 buf = base32encode(hash->buf, hash->len);
2471 bufcat(sstr, buf, 39);
2476 sizebuf2(sstr, sstrdata + 32, 1);
2477 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
2478 } else if(maxsize != -1) {
2479 sizebuf2(sstr, sstrdata + 32, 1);
2480 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
2482 bufcat(sstr, "F?F?0?1?", 8);
2486 for(cur = list; cur != NULL; cur = cur->next)
2488 /* Use DCCHARSET in $Get paths until further researched... */
2489 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2491 /* Can't find anything anyway if the search expression
2492 * requires characters outside DC's charset. There's
2493 * nothing technically wrong with the search itself,
2494 * however, so return success. This should be
2495 * considered as an optimization. */
2502 addtobuf(sstr, '$');
2504 * It probably doesn't hurt if buf contains any extra
2505 * dollar signs - it will just result in extra search
2506 * terms, and the extraneous results will be filtered by
2507 * the search layer anyway. It hurts if it contains any
2508 * pipes, though, so let's sell them for money.
2510 for(p = buf; *p; p++)
2515 bufcat(sstr, buf, strlen(buf));
2519 /* Will match all files... :-/ */
2520 addtobuf(sstr, '.');
2526 if(sockgetremotename2(udpsock, fn->sk, &name, &namelen) < 0)
2528 flog(LOG_WARNING, "cannot get address of UDP socket");
2530 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2534 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2538 fn->lastsrch = time(NULL);
2546 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2547 static struct command hubcmds[] =
2549 {"$Lock", cc(cmd_lock)},
2550 {"$HubName", cc(cmd_hubname)},
2551 {"$Hello", cc(cmd_hello)},
2552 {"$Quit", cc(cmd_quit)},
2553 {"$NickList", cc(cmd_nicklist)},
2554 {"$OpList", cc(cmd_oplist)},
2555 {"$MyINFO", cc(cmd_myinfo)},
2556 {"$ForceMove", cc(cmd_forcemove)},
2557 {"$Search", cc(cmd_search)},
2558 {"$MultiSearch", cc(cmd_search)},
2559 {"$ConnectToMe", cc(cmd_connecttome)},
2560 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2561 {"$GetNetInfo", cc(cmd_getnetinfo)},
2562 {"$To:", cc(cmd_to)},
2563 {"$SR", cc(cmd_sr)},
2564 {"$UserCommand", cc(cmd_usercommand)},
2565 {"$GetPass", cc(cmd_getpass)},
2566 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2570 static struct command peercmds[] =
2572 {"$MyNick", cc(cmd_mynick)},
2573 {"$Lock", cc(cmd_peerlock)},
2574 {"$Direction", cc(cmd_direction)},
2575 {"$Key", cc(cmd_key)},
2576 {"$FileLength", cc(cmd_filelength)},
2577 {"$Error", cc(cmd_error)},
2578 {"$MaxedOut", cc(cmd_maxedout)},
2579 {"$Get", cc(cmd_get)},
2580 {"$Send", cc(cmd_send)},
2581 {"$Supports", cc(cmd_supports)},
2582 {"$GetBlock", cc(cmd_getblock)},
2583 {"$UGetBlock", cc(cmd_getblock)},
2584 {"$GetZBlock", cc(cmd_getblock)},
2585 {"$UGetZBlock", cc(cmd_getblock)},
2586 {"$ADCGET", cc(cmd_adcget)},
2587 {"$ADCSND", cc(cmd_adcsnd), 1},
2588 {"$Sending", cc(cmd_sending), 1},
2593 static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2595 CBUNREG(transfer, trans_filterout, trresumecb, peer);
2598 peer->transfer = NULL;
2602 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2606 unsigned char outbuf[1024];
2610 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2612 if(sockqueuesize(peer->sk) < 65536)
2614 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2616 if(peer->compress == CPRS_NONE)
2618 sockqueue(peer->sk, buf, bufsize);
2619 } else if(peer->compress == CPRS_ZLIB) {
2620 cstr = peer->cprsdata;
2621 cstr->next_in = buf;
2622 cstr->avail_in = bufsize;
2623 while(cstr->avail_in > 0)
2625 cstr->next_out = outbuf;
2626 cstr->avail_out = sizeof(outbuf);
2627 if((ret = deflate(cstr, 0)) != Z_OK)
2629 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2633 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2638 if(peer->state == PEER_SYNC)
2640 if(peer->compress == CPRS_ZLIB)
2642 cstr = peer->cprsdata;
2643 cstr->next_in = NULL;
2647 cstr->next_out = outbuf;
2648 cstr->avail_out = sizeof(outbuf);
2649 ret = deflate(cstr, Z_FINISH);
2650 if((ret != Z_OK) && (ret != Z_STREAM_END))
2652 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2656 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2657 } while(ret != Z_STREAM_END);
2663 if(peer->timeout == NULL)
2664 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2665 peer->state = PEER_CMD;
2667 transfersetstate(transfer, TRNS_HS);
2668 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2669 transfer->flags.b.minislot = 0;
2670 CBUNREG(peer->sk, socket_write, transwrite, peer);
2677 static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2679 peer->state = PEER_SYNC;
2680 dctransgotdata(transfer, peer);
2683 static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2685 if(transferdatasize(transfer) < 65536)
2686 peer->sk->ignread = 0;
2689 static void transread(struct dcpeer *peer)
2692 struct transfer *transfer;
2694 if(peer->transfer == NULL)
2699 if(peer->inbufsize > peer->transfer->size - peer->transfer->curpos)
2700 num = peer->transfer->size - peer->transfer->curpos;
2702 num = peer->inbufsize;
2703 transferputdata(peer->transfer, peer->inbuf, num);
2704 memmove(peer->inbuf, peer->inbuf + num, peer->inbufsize -= num);
2705 if(peer->transfer->curpos >= peer->transfer->size)
2707 transfer = peer->transfer;
2708 transferdetach(transfer);
2709 transferendofdata(transfer);
2712 if(transferdatasize(peer->transfer) > 65535)
2713 peer->sk->ignread = 1;
2716 static void transerr(struct dcpeer *peer)
2718 struct transfer *transfer;
2720 if((transfer = peer->transfer) == NULL)
2722 transferdetach(transfer);
2723 transferendofdata(transfer);
2726 static int transwrite(struct socket *sk, struct dcpeer *peer)
2728 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2730 if(peer->transfer == NULL)
2735 dctransgotdata(peer->transfer, peer);
2739 static int udpread(struct socket *sk, void *data)
2741 char *buf, *p, *p2, *hashbuf;
2742 size_t buflen, hashlen;
2743 char *nick, *filename, *hubname;
2744 struct sockaddr_in hubaddr;
2746 struct fnetnode *fn, *myfn;
2749 wchar_t *wnick, *wfile;
2752 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2754 buf = srealloc(buf, buflen + 1);
2756 if(!strncmp(buf, "$SR ", 4))
2760 if((p2 = strchr(p, ' ')) == NULL)
2768 if((p2 = strchr(p, 5)) == NULL)
2775 if((p2 = strchr(p, ' ')) == NULL)
2783 if((p2 = strchr(p, '/')) == NULL)
2791 if((p2 = strchr(p, 5)) == NULL)
2798 if((p2 = strstr(p, " (")) == NULL)
2805 if((p2 = strchr(p, ':')) == NULL)
2811 hubaddr.sin_family = AF_INET;
2812 if(!inet_aton(p, &hubaddr.sin_addr))
2818 if((p2 = strchr(p, ')')) == NULL)
2824 hubaddr.sin_port = htons(atoi(p));
2825 /* Use DCCHARSET in $Get paths until further researched... */
2826 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2833 if(!strncmp(hubname, "TTH:", 4))
2835 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2838 hash = newhash(L"TTH", 24, hashbuf);
2842 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2844 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2846 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2861 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2863 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
2873 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2878 sr = newsrchres(&dcnet, wfile, wnick);
2879 if(sr->peernick != NULL)
2881 sr->peernick = swcsdup(wnick);
2887 getfnetnode(sr->fn = myfn);
2897 static void hubread(struct socket *sk, struct fnetnode *fn)
2904 hub = (struct dchub *)fn->data;
2905 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2907 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2909 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2910 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2912 p = hub->inbuf + hub->inbufdata;
2913 hub->inbufdata += datalen;
2914 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2917 newqcmd(&hub->queue, hub->inbuf);
2918 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2919 datalen = hub->inbufdata;
2924 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2929 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2935 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2937 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2942 if(hub == NULL) /* Not yet connected */
2947 if(hub->nativenick != NULL)
2948 free(hub->nativenick);
2949 hub->nativenick = buf;
2953 static struct dchub *newdchub(struct fnetnode *fn)
2960 new = smalloc(sizeof(*new));
2961 memset(new, 0, sizeof(*new));
2963 if(confgetint("dc", "dcppemu"))
2965 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
2973 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
2975 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
2977 if(!havecharset(charset))
2985 new->charset = charset;
2987 new->charset = sstrdup(DCCHARSET);
2988 if(hubsetnick(fn, fn->mynick))
2989 fnetsetnick(fn, L"DoldaConnectUser-IN");
2990 /* IN as in Invalid Nick */
2994 static struct dcpeer *newdcpeer(struct socket *sk)
2998 new = smalloc(sizeof(*new));
2999 memset(new, 0, sizeof(*new));
3000 new->transfer = NULL;
3003 if(confgetint("dc", "dcppemu"))
3014 static void freedcpeer(struct dcpeer *peer)
3017 struct qcommand *qcmd;
3022 if(peer->next != NULL)
3023 peer->next->prev = peer->prev;
3024 if(peer->prev != NULL)
3025 peer->prev->next = peer->next;
3026 if(peer->transfer != NULL)
3028 if(peer->transfer->dir == TRNSD_UP)
3029 peer->transfer->close = 1;
3030 if(peer->transfer->dir == TRNSD_DOWN)
3031 resettransfer(peer->transfer);
3032 transferdetach(peer->transfer);
3034 if(peer->timeout != NULL)
3035 canceltimer(peer->timeout);
3036 /* XXX: Unregister transwrite from peer->sk->socket_write? */
3037 CBUNREG(peer->sk, socket_read, peerread, peer);
3038 CBUNREG(peer->sk, socket_err, peererror, peer);
3041 if(peer->supports != NULL)
3043 for(i = 0; peer->supports[i] != NULL; i++)
3044 free(peer->supports[i]);
3045 free(peer->supports);
3047 if(peer->inbuf != NULL)
3049 if(peer->key != NULL)
3051 if(peer->wcsname != NULL)
3052 free(peer->wcsname);
3053 if(peer->nativename != NULL)
3054 free(peer->nativename);
3055 if(peer->charset != NULL)
3056 free(peer->charset);
3057 if(peer->fn != NULL)
3058 putfnetnode(peer->fn);
3059 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3065 static void hubconnect(struct fnetnode *fn)
3067 CBREG(fn->sk, socket_read, (int (*)(struct socket *, void *))hubread, (void (*)(void *))putfnetnode, getfnetnode(fn));
3068 CBREG(fn->sk, socket_err, (int (*)(struct socket *, int, void *))huberr, (void (*)(void *))putfnetnode, getfnetnode(fn));
3069 fn->data = newdchub(fn);
3073 static void hubdestroy(struct fnetnode *fn)
3076 struct qcommand *qcmd;
3078 hub = (struct dchub *)fn->data;
3081 CBUNREG(fn->sk, socket_read, hubread, fn);
3082 CBUNREG(fn->sk, socket_err, huberr, fn);
3086 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3088 if(hub->nativename != NULL)
3089 free(hub->nativename);
3090 if(hub->nativenick != NULL)
3091 free(hub->nativenick);
3092 if(hub->charset != NULL)
3094 if(hub->inbuf != NULL)
3099 static wchar_t *dcbasename(wchar_t *filename)
3103 if((ret = wcsrchr(filename, L'\\')) != NULL)
3108 static struct transferiface dctransfer =
3110 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3111 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3112 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3113 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3116 static struct fnet dcnet =
3119 .connect = hubconnect,
3120 .destroy = hubdestroy,
3121 .setnick = hubsetnick,
3122 .reqconn = hubreqconn,
3123 .sendchat = hubsendchat,
3124 .search = hubsearch,
3125 .filebasename = dcbasename
3128 static void cmdread(struct dcpeer *peer)
3131 struct command *cmd;
3134 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3137 newqcmd(&peer->queue, peer->inbuf);
3138 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3140 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3143 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3146 peer->state = PEER_STOP;
3152 static int peerread(struct socket *sk, struct dcpeer *peer)
3157 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3159 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3160 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3162 peer->inbufdata += datalen;
3163 if(peer->state == PEER_CMD)
3166 } else if(peer->state == PEER_TRNS) {
3168 } else if(peer->state == PEER_TTHL) {
3174 static int peererror(struct socket *sk, int err, struct dcpeer *peer)
3176 if(peer->state == PEER_TRNS)
3182 static int peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3184 struct dcpeer *peer;
3194 peer = newdcpeer(sk);
3197 peer->dcppemu = hub->dcppemu;
3198 CBREG(sk, socket_read, (int (*)(struct socket *, void *))peerread, NULL, peer);
3199 CBREG(sk, socket_err, (int (*)(struct socket *, int, void *))peererror, NULL, peer);
3200 socksettos(sk, confgetint("fnet", "fnptos"));
3202 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3208 static int peeraccept(struct socket *sk, struct socket *newsk, void *data)
3210 struct dcpeer *peer;
3212 peer = newdcpeer(newsk);
3214 CBREG(sk, socket_read, (int (*)(struct socket *, void *))peerread, NULL, peer);
3215 CBREG(sk, socket_err, (int (*)(struct socket *, int, void *))peererror, NULL, peer);
3216 socksettos(newsk, confgetint("fnet", "fnptos"));
3217 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3221 static void updatehmlist(void)
3223 int i, lev, ic, ret;
3224 struct sharecache *node;
3225 char *buf, *buf2, numbuf[32];
3226 size_t bufsize, bufdata;
3230 buf = smalloc(bufsize = 65536);
3231 node = shareroot->child;
3236 /* Use DCCHARSET in $Get paths until further researched... */
3237 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3239 for(i = 0; i < lev; i++)
3241 bufcat(buf, buf2, strlen(buf2));
3243 if(node->f.b.type == FILE_REG)
3246 sprintf(numbuf, "%i", node->size);
3247 bufcat(buf, numbuf, strlen(numbuf));
3254 if((node->child != NULL) && !ic)
3258 } else if(node->next != NULL) {
3261 while(node->next == NULL)
3264 node = node->parent;
3265 if(node == shareroot)
3268 if(node == shareroot)
3273 if(hmlistname != NULL)
3278 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3279 if((fd = mkstemp(hmlistname)) < 0)
3281 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3286 * I do not want to implement a good Huffman encoder, and it's not
3287 * like Huffman encoding actually yields any impressive results
3288 * for DC file lists anyway, so I'll just output a bogus
3289 * tree. Implement a good encoder if you want to.
3291 write(fd, "HE3\r\0", 5);
3292 write(fd, &bufdata, 4);
3294 write(fd, &ibuf, 2);
3296 for(i = 0; i < 256; i++)
3299 write(fd, &ibuf, 1);
3301 for(i = 0; i < 256; i++)
3303 for(buf2 = buf; bufdata > 0;)
3305 if((ret = write(fd, buf2, bufdata)) < 0)
3307 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3318 static struct xmlent
3325 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3329 static wchar_t *escapexml(wchar_t *src)
3331 static wchar_t *buf = NULL;;
3334 size_t bufsize, bufdata;
3340 bufsize = bufdata = 0;
3341 for(; *src != L'\0'; src++)
3344 if((c > 0) && (c < 32))
3346 bufcat(buf, L"&#", 2);
3347 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3348 bufcat(buf, nbuf, ret);
3349 addtobuf(buf, L';');
3351 for(ent = entities; ent->ent != NULL; ent++)
3355 bufcat(buf, ent->ent, wcslen(ent->ent));
3359 if(ent->ent == NULL)
3360 addtobuf(buf, *src);
3363 addtobuf(buf, L'\0');
3367 static void updatexmllist(void)
3371 char cidbuf[14], *namebuf;
3373 struct sharecache *node;
3375 if(xmllistname != NULL)
3377 unlink(xmllistname);
3380 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3381 if((fd = mkstemp(xmllistname)) < 0)
3383 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3388 if((fs = fdopen(fd, "w")) == NULL)
3390 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3391 unlink(xmllistname);
3397 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3398 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3399 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3401 if(confgetint("dc", "dcppemu"))
3402 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3404 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
3406 node = shareroot->child;
3410 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3412 for(i = 0; i < lev; i++)
3414 if(node->child != NULL)
3416 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3421 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3422 if(node->f.b.hastth)
3424 hashbuf = base32encode(node->hashtth, 24);
3425 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3428 fprintf(fs, "/>\r\n");
3430 while(node->next == NULL)
3432 node = node->parent;
3433 if(node == shareroot)
3438 for(i = 0; i < lev; i++)
3440 fprintf(fs, "</Directory>\r\n");
3443 if(node == shareroot)
3449 if(confgetint("dc", "dcppemu"))
3450 fprintf(fs, "</FileListing>");
3452 fprintf(fs, "</FileListing>\r\n");
3456 static void updatexmlbz2list(void)
3465 if(xmllistname == NULL)
3467 if((in = fopen(xmllistname, "r")) == NULL)
3469 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3472 if(xmlbz2listname != NULL)
3474 unlink(xmlbz2listname);
3475 free(xmlbz2listname);
3477 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3478 if((fd = mkstemp(xmlbz2listname)) < 0)
3480 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3481 free(xmlbz2listname);
3482 xmlbz2listname = NULL;
3486 if((real = fdopen(fd, "w")) == NULL)
3488 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3490 unlink(xmlbz2listname);
3491 free(xmlbz2listname);
3492 xmlbz2listname = NULL;
3496 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3499 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3501 unlink(xmlbz2listname);
3502 free(xmlbz2listname);
3503 xmlbz2listname = NULL;
3509 bufdata = fread(buf, 1, sizeof(buf), in);
3510 BZ2_bzWrite(&err, out, buf, bufdata);
3513 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3517 static void listtimercb(int cancelled, void *uudata)
3519 listwritetimer = NULL;
3524 static void updatelists(int now)
3526 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3530 if(listwritetimer == NULL)
3531 listwritetimer = timercallback(ntime() + 300, listtimercb, NULL);
3534 if(listwritetimer != NULL)
3535 canceltimer(listwritetimer);
3541 static int shareupdate(unsigned long long uusharesize, void *data)
3547 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3550 struct command *cmd;
3552 if((p = strchr(qcmd->string, ' ')) != NULL)
3554 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3556 if(!strcmp(cmd->name, qcmd->string))
3559 if(cmd->handler != NULL)
3560 cmd->handler(sk, data, qcmd->string, p);
3563 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3567 static int run(void)
3569 struct fnetnode *fn, *nextfn;
3571 struct dcpeer *peer, *nextpeer;
3572 struct qcommand *qcmd;
3576 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3579 if(fn->fnet != &dcnet)
3581 if(fn->data == NULL)
3583 hub = (struct dchub *)fn->data;
3584 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3586 if(*qcmd->string == '$')
3588 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3589 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3590 } else if(*qcmd->string != 0) {
3591 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3598 for(peer = peers; peer != NULL; peer = nextpeer)
3600 nextpeer = peer->next;
3601 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3603 if(peer->timeout != NULL)
3604 canceltimer(peer->timeout);
3605 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3606 if(*qcmd->string == '$')
3607 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3616 static void preinit(int hup)
3623 static int updateudpport(struct configvar *var, void *uudata)
3625 struct sockaddr_in addr;
3626 struct socket *newsock;
3628 memset(&addr, 0, sizeof(addr));
3629 addr.sin_family = AF_INET;
3630 addr.sin_port = htons(var->val.num);
3631 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3633 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3636 CBREG(newsock, socket_read, udpread, NULL, NULL);
3643 static int updatetcpport(struct configvar *var, void *uudata)
3645 struct sockaddr_in addr;
3646 struct socket *newsock;
3648 memset(&addr, 0, sizeof(addr));
3649 addr.sin_family = AF_INET;
3650 addr.sin_port = htons(var->val.num);
3651 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3652 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3659 static int init(int hup)
3661 struct sockaddr_in addr;
3665 GCBREG(sharechangecb, shareupdate, NULL);
3670 addr.sin_family = AF_INET;
3671 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3672 addr.sin_port = htons(confgetint("dc", "udpport"));
3673 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3675 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3678 CBREG(udpsock, socket_read, udpread, NULL, NULL);
3679 addr.sin_port = htons(confgetint("dc", "tcpport"));
3680 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3681 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3682 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3683 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3684 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3689 static void terminate(void)
3691 if(hmlistname != NULL)
3696 if(xmllistname != NULL)
3698 unlink(xmllistname);
3701 if(xmlbz2listname != NULL)
3703 unlink(xmlbz2listname);
3704 free(xmlbz2listname);
3708 static struct configvar myvars[] =
3710 {CONF_VAR_STRING, "desc", {.str = L""}},
3711 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3712 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3713 {CONF_VAR_INT, "udpport", {.num = 0}},
3714 {CONF_VAR_INT, "tcpport", {.num = 0}},
3715 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
3719 static struct module me =
3728 .terminate = terminate,