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;
116 struct dcexppeer *next, *prev;
119 struct timer *expire;
124 struct dcpeer *next, *prev;
128 size_t inbufdata, inbufsize;
129 size_t curread, totalsize;
131 struct qcommand *queue;
132 struct transfer *transfer;
134 int ptclose; /* Close after transfer is complete */
135 int accepted; /* If false, we connected, otherwise, we accepted */
137 int direction; /* Using the constants from transfer.h */
139 int hascurpos, notthl;
140 struct tigertreehash tth;
148 static struct fnet dcnet;
149 static struct transferiface dctransfer;
150 static struct socket *udpsock = NULL;
151 static struct socket *tcpsock = NULL;
152 static struct dcpeer *peers = NULL;
154 static struct dcexppeer *expected = NULL;
155 static char *hmlistname = NULL;
156 static char *xmllistname = NULL;
157 static char *xmlbz2listname = NULL;
159 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
160 static void freedcpeer(struct dcpeer *peer);
161 static void transread(struct socket *sk, struct dcpeer *peer);
162 static void transerr(struct socket *sk, int err, struct dcpeer *peer);
163 static void transwrite(struct socket *sk, struct dcpeer *peer);
164 static void updatehmlist(void);
165 static void updatexmllist(void);
166 static void updatexmlbz2list(void);
167 static void requestfile(struct dcpeer *peer);
169 static int reservedchar(unsigned char c)
171 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
174 /* Oh, how I despise having to do this... */
175 static char *dcmakekey(char *lock)
181 buf = smalloc(strlen(lock));
184 for(i = 0; lock[i]; i++)
186 buf[i] = lock[i] ^ save;
187 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
189 if((i != 0) && reservedchar(buf[i]))
194 buf[0] ^= buf[i - 1];
195 if(reservedchar(buf[0]))
199 key = smalloc(len + 1);
201 for(i = 0; lock[i] != 0; i++)
203 if(reservedchar(buf[i]))
204 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
206 key[offset++] = buf[i];
213 static char *pathnmdc2adc(char *path)
216 size_t retsize, retdata;
218 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
219 return(sstrdup(path));
221 retsize = retdata = 0;
228 addtobuf(ret, *path);
234 static int isdchash(struct hash *hash)
236 if(wcscmp(hash->algo, L"TTH"))
243 static int supports(struct dcpeer *peer, char *cap)
247 if(peer->supports == NULL)
249 for(p = peer->supports; *p != NULL; p++)
251 if(!strcasecmp(*p, cap))
257 static void endcompress(struct dcpeer *peer)
259 if(peer->compress == CPRS_ZLIB)
261 deflateEnd(peer->cprsdata);
262 free(peer->cprsdata);
264 peer->compress = CPRS_NONE;
267 static void initcompress(struct dcpeer *peer, int algo)
272 peer->compress = algo;
273 if(algo == CPRS_ZLIB)
275 peer->cprsdata = smalloc(sizeof(z_stream));
276 memset(peer->cprsdata, 0, sizeof(z_stream));
277 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
279 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
285 static void unquote(wchar_t *in)
289 for(p = in; *p != L'\0'; p++)
293 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
300 if(!wcscmp(p + 1, L"amp"))
303 } else if(p[1] == L'#') {
304 nc = ucptowc(wcstol(p + 2, NULL, 10));
313 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
318 static void freeexppeer(struct dcexppeer *ep)
321 ep->next->prev = ep->prev;
323 ep->prev->next = ep->next;
328 if(ep->expire != NULL)
329 canceltimer(ep->expire);
333 static void exppeerexpire(int cancelled, struct dcexppeer *ep)
340 static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
342 struct dcexppeer *ep;
344 ep = smalloc(sizeof(*ep));
345 ep->nick = sstrdup(nick);
346 getfnetnode(ep->fn = fn);
347 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
356 static struct qcommand *newqcmd(struct qcommand **queue, char *string)
358 struct qcommand *new;
360 while(*queue != NULL)
361 queue = &(*queue)->next;
362 new = smalloc(sizeof(*new));
363 new->string = sstrdup(string);
369 static struct qcommand *ulqcmd(struct qcommand **queue)
371 struct qcommand *qcmd;
373 if((qcmd = *queue) == NULL)
379 static void freeqcmd(struct qcommand *qcmd)
385 static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
387 wchar_t *chat, *wfrom, *wpeer;
389 struct fnetpeer *peer;
391 end = string + strlen(string);
392 while((p = strchr(string, 13)) != NULL)
393 memmove(p, p + 1, (end-- - p));
396 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
397 string += strlen(from) + 2;
398 if((wfrom = icmbstowcs(from, DCCHARSET)) == NULL)
400 wpeer = swcsdup(wfrom);
406 for(p = string + 1; *p; p++)
408 if((*p == ' ') || (*p == '>'))
416 if((wpeer = icmbstowcs(string + 1, DCCHARSET)) == NULL)
422 wpeer = swcsdup(L"");
424 if((chat = icmbstowcs(string, DCCHARSET)) == NULL)
434 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
435 fnethandlechat(fn, 1, wfrom, wpeer, chat);
437 fnethandlechat(fn, 0, wfrom, wpeer, chat);
439 fnethandlechat(fn, 1, L"", wpeer, chat);
447 static void sendadc(struct socket *sk, char *arg)
450 size_t bufsize, bufdata;
453 bufsize = bufdata = 0;
459 bufcat(buf, "\\s", 2);
460 } else if(*arg == '\n') {
461 bufcat(buf, "\\n", 2);
462 } else if(*arg == '\\') {
463 bufcat(buf, "\\\\", 2);
468 sockqueue(sk, buf, bufdata);
472 static void sendadcf(struct socket *sk, char *arg, ...)
478 buf = vsprintf2(arg, args);
486 static char **parseadc(char *args)
489 size_t retbufsize, retbufdata;
491 size_t bufsize, bufdata;
496 retbufsize = retbufdata = bufsize = bufdata = 0;
505 else if(*args != ' ')
509 if((*args == ' ') || (*args == 0))
512 addtobuf(retbuf, buf);
514 bufsize = bufdata = 0;
517 } else if(*args == '\\') {
520 addtobuf(buf, *args);
529 addtobuf(retbuf, NULL);
532 } else if((*args == 's') || (*args == ' ')) {
534 } else if(*args == 'n') {
536 } else if(*args == '\\') {
546 addtobuf(retbuf, NULL);
550 /* Macros useful in command handlers */
551 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
552 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
553 #define qstrf(sk, strandargs...) \
556 if((__buf__ = sprintf2(strandargs)) != NULL) { \
557 sockqueue(sk, __buf__, strlen(__buf__)); \
562 static char *tr(char *str, char *trans)
566 for(; *trans; trans += 2)
568 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
574 static char *getadcid(struct dcpeer *peer)
580 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
582 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
584 buf = base32encode(peer->transfer->hash->buf, 24);
585 ret = sprintf2("TTH/%.39s", buf);
588 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
590 ret = pathnmdc2adc(buf);
597 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
599 if(!wcscmp(cmd, L"resume"))
603 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
606 transfer->curpos = wcstol(arg, NULL, 10);
615 static void sendmynick(struct dcpeer *peer)
619 hub = (peer->fn == NULL)?NULL:(peer->fn->data);
621 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), DCCHARSET, "DoldaConnectUser-IN"));
623 qstrf(peer->sk, "$MyNick %s|", hub->nativenick);
626 static void sendpeerlock(struct dcpeer *peer)
628 #ifdef DCPP_MASQUERADE
629 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
631 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
635 static void sendsupports(struct dcpeer *peer)
637 #ifdef DCPP_MASQUERADE
638 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
640 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
644 static void requestfile(struct dcpeer *peer)
648 if(peer->transfer->size == -1)
650 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
652 transferseterror(peer->transfer, TRNSE_NOTFOUND);
656 /* The transfer will be restarted later from
657 * cmd_filelength when it detects that the sizes
659 qstrf(peer->sk, "$Get %s$1|", buf);
662 if((peer->transfer->hash == NULL) && !peer->notthl)
664 if(supports(peer, "adcget") && supports(peer, "tthl"))
666 qstr(peer->sk, "$ADCGET");
667 sendadc(peer->sk, "tthl");
668 if((buf = getadcid(peer)) == NULL)
670 transferseterror(peer->transfer, TRNSE_NOTFOUND);
674 sendadc(peer->sk, buf);
676 sendadc(peer->sk, "0");
677 sendadc(peer->sk, "-1");
684 if(forkfilter(peer->transfer))
686 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
690 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
693 if(supports(peer, "adcget"))
695 qstr(peer->sk, "$ADCGET");
696 sendadc(peer->sk, "file");
697 if((buf = getadcid(peer)) == NULL)
699 transferseterror(peer->transfer, TRNSE_NOTFOUND);
703 sendadc(peer->sk, buf);
705 sendadcf(peer->sk, "%i", peer->transfer->curpos);
706 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
708 } else if(supports(peer, "xmlbzlist")) {
709 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
711 transferseterror(peer->transfer, TRNSE_NOTFOUND);
715 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
717 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
719 transferseterror(peer->transfer, TRNSE_NOTFOUND);
723 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
727 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
731 struct fnetnode *cfn;
735 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
736 buf = tr(icswcstombs(confgetstr("dc", "desc"), DCCHARSET, "Charset_conv_failure"), "$_|_");
737 qstrf(sk, "%s", buf);
739 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
741 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
743 if(cfn->regstatus == FNNS_OP)
745 else if(cfn->regstatus == FNNS_REG)
751 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
754 (tcpsock == NULL)?'P':'A',
756 confgetint("transfer", "slots")
759 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), DCCHARSET, "Charset_conv_failure"), "$_|_");
760 qstrf(sk, "%s\x01$", buf);
761 buf = tr(icswcstombs(confgetstr("dc", "email"), DCCHARSET, "Charset_conv_failure"), "$_|_");
762 qstrf(sk, "%s$", buf);
763 qstrf(sk, "%llu$|", sharesize);
766 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
771 if(!strcmp(cmd, "$Lock"))
773 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
774 } else if(!strcmp(cmd, "$Hello")) {
775 if(fn->state == FNN_HS)
777 qstrf(sk, "$Version 1,0091|");
778 qstrf(sk, "$GetNickList|");
780 fnetsetstate(fn, FNN_EST);
782 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
787 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
794 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
796 if((p = strchr(args, ' ')) != NULL)
800 #ifdef DCPP_MASQUERADE
801 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
803 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
806 key = dcmakekey(args);
807 qstrf(sk, "$Key %s|", key);
809 hubhandleaction(sk, fn, cmd, args);
812 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
818 if(hub->nativename == NULL)
819 free(hub->nativename);
820 hub->nativename = sstrdup(args);
821 buf = icmbstowcs(args, DCCHARSET);
822 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
825 hubhandleaction(sk, fn, cmd, args);
828 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
834 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
836 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
837 fnetaddpeer(fn, nick, nick);
839 hubhandleaction(sk, fn, cmd, args);
842 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
845 struct fnetpeer *peer;
849 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
851 if((peer = fnetfindpeer(fn, nick)) != NULL)
854 hubhandleaction(sk, fn, cmd, args);
857 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
862 struct fnetpeer *peer, *npeer;
865 for(peer = fn->peers; peer != NULL; peer = peer->next)
866 peer->flags.b.delete = 1;
867 while((p = strstr(args, "$$")) != NULL)
870 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
872 if((peer = fnetfindpeer(fn, buf)) == NULL)
873 peer = fnetaddpeer(fn, buf, buf);
875 peer->flags.b.delete = 0;
877 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
881 for(peer = fn->peers; peer != NULL; peer = npeer)
884 if(peer->flags.b.delete)
887 hubhandleaction(sk, fn, cmd, args);
890 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
895 struct fnetpeer *peer;
898 for(peer = fn->peers; peer != NULL; peer = peer->next)
899 peer->flags.b.op = 0;
900 while((p = strstr(args, "$$")) != NULL)
903 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
905 if((peer = fnetfindpeer(fn, buf)) != NULL)
906 peer->flags.b.op = 1;
911 hubhandleaction(sk, fn, cmd, args);
914 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
917 wchar_t *buf, *wp, *wp2;
919 struct fnetpeer *peer;
924 if(strncmp(p, "$ALL ", 5))
927 if((p2 = strchr(p, ' ')) == NULL)
930 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
932 if((peer = fnetfindpeer(fn, buf)) == NULL)
933 peer = fnetaddpeer(fn, buf, buf);
936 if((p2 = strstr(p, "$ $")) == NULL)
939 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
941 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcschr(buf, L'<')) != NULL))
943 buf[wcslen(buf) - 1] = L'\0';
945 if((wp2 = wcschr(wp, L' ')) != NULL)
948 fnetpeersetstr(peer, L"dc-client", wp);
952 if((wp2 = wcschr(wp, L',')) != NULL)
956 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
957 fnetpeersetstr(peer, abuf, wp + 2);
959 } while(wp2 != NULL);
962 fnetpeersetstr(peer, L"descr", buf);
965 if((p2 = strchr(p, '$')) == NULL)
968 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
970 fnetpeersetstr(peer, L"dc-speed", buf);
973 if((p2 = strchr(p, '$')) == NULL)
976 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
978 fnetpeersetstr(peer, L"email", buf);
983 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
984 hubhandleaction(sk, fn, cmd, args);
987 /* I do not implement the fully in that I do not disconnect from the
988 * old hub. I do this since I believe that if the hub owner really
989 * wants to get rid of us, then it is his responsibility to disconnect
991 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
994 struct fnetnode *newfn;
998 if(strchr(args, ':') == NULL)
1000 args = strcpy(smalloc(strlen(args) + 5), args);
1001 strcat(args, ":411");
1006 if((newfn = fnetinitconnect(L"dc", args, NULL)) != NULL)
1008 linkfnetnode(newfn);
1011 hubhandleaction(sk, fn, cmd, args);
1016 static char *getdcpath(struct sharecache *node, size_t *retlen)
1021 if(node->parent == NULL)
1023 if(node->parent == shareroot)
1025 if((buf = icwcstombs(node->name, DCCHARSET)) == NULL)
1028 *retlen = strlen(buf);
1031 if((buf2 = icwcstombs(node->name, DCCHARSET)) == NULL)
1033 if((buf = getdcpath(node->parent, &len)) == NULL)
1038 len2 = strlen(buf2);
1039 buf = srealloc(buf, len + 1 + len2 + 1);
1041 strcpy(buf + len, buf2);
1042 buf[len + len2] = 0;
1045 *retlen = len + len2;
1051 * This is the main share searching function for Direct Connect
1052 * peers. Feel free to optimize it if you feel the need for it. I
1053 * haven't ever seen it take any noticable CPU time anyway, so I
1054 * haven't felt that need.
1056 * It may feel dubious to just return the directory when all terms are
1057 * satisfied rather than all the files in it, but it really benefits
1058 * everyone: Less cycles used for us, less UDP squelching for active
1059 * searchers, and less bandwidth waste for hubs when serving passive
1062 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1067 char *prefix, *infix, *postfix, *buf, *buf2;
1069 struct sockaddr_in addr;
1070 struct sharecache *node;
1071 int minsize, maxsize;
1073 int termnum, satisfied, skipcheck;
1074 int level, tersat[32];
1079 if((p = strchr(args, ' ')) == NULL)
1083 memset(terms, 0, sizeof(terms));
1084 prefix = infix = postfix = NULL;
1088 if(!strncmp(args, "Hub:", 4))
1090 if(!strcmp(cmd, "$MultiSearch"))
1092 if(!strcmp(args + 4, hub->nativenick))
1094 prefix = sprintf2("$SR %s ", hub->nativenick);
1095 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1096 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1100 if((p2 = strchr(args, ':')) == NULL)
1103 addr.sin_family = AF_INET;
1104 if(!inet_aton(args, &addr.sin_addr))
1106 addr.sin_port = htons(atoi(p2));
1107 prefix = sprintf2("$SR %s ", hub->nativenick);
1108 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1109 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1110 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1113 minsize = maxsize = -1;
1122 if((*(p++) == 'T') && (minsize == 0))
1129 if((p2 = strchr(p, '?')) == NULL)
1144 if((*p2 == 0) || (*p2 == '$'))
1152 if(!dotth && !strncmp(p, "TTH:", 4))
1155 if((buf = base32decode(p + 4, &buflen)) == NULL)
1159 memcpy(hashtth, buf, 24);
1162 if((terms[termnum] = icmbstowcs(p, DCCHARSET)) != NULL)
1173 node = shareroot->child;
1175 for(i = 0; i < termnum; i++)
1181 if(node->f.b.type == FILE_REG)
1183 if((minsize >= 0) && (node->size < minsize))
1185 if((maxsize >= 0) && (node->size > maxsize))
1188 if(!skipcheck && dotth)
1190 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1195 for(i = 0; i < termnum; i++)
1199 if(wcsexists(node->name, terms[i]))
1203 } else if(node->child == NULL) {
1208 if(!skipcheck && (satisfied == termnum))
1210 if((buf = getdcpath(node, NULL)) != NULL)
1212 if(node->f.b.hastth)
1214 buf2 = base32encode(node->hashtth, 24);
1215 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1218 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1223 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1225 while(node->next == NULL)
1227 if((node = node->parent) == shareroot)
1231 if(node == shareroot)
1233 for(i = 0; i < termnum; i++)
1235 if(tersat[i] >= level)
1248 hubhandleaction(sk, fn, cmd, args);
1259 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1263 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1267 struct socket *newsk;
1268 struct sockaddr_in addr;
1271 if((p = strchr(args, ' ')) == NULL)
1274 if(strcmp(args, hub->nativenick))
1276 addr.sin_family = AF_INET;
1278 if((p = strchr(args, ':')) == NULL)
1281 addr.sin_port = htons(atoi(p));
1282 if(!inet_aton(args, &addr.sin_addr))
1284 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1286 hubhandleaction(sk, fn, cmd, args);
1289 static void sendctm(struct socket *sk, char *nick)
1291 struct sockaddr *addr;
1296 if(sockgetremotename(tcpsock, &addr, &addrlen) < 0)
1298 if(addr->sa_family == AF_INET)
1299 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1301 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1305 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1311 if((p = strchr(args, ' ')) == NULL)
1314 if(strcmp(p, hub->nativenick))
1317 expectpeer(args, fn);
1318 hubhandleaction(sk, fn, cmd, args);
1321 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1324 struct fnetnode *node;
1329 for(node = fnetnodes; node != NULL; node = node->next)
1331 if(node->state == FNN_EST)
1334 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1335 hubhandleaction(sk, fn, cmd, args);
1338 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1345 if((p2 = strchr(p, ' ')) == NULL)
1349 if((p2 = strchr(p, ' ')) == NULL)
1352 if(strcmp(p, "From:"))
1355 if((p2 = strstr(p, " $")) == NULL)
1359 hubrecvchat(fn->sk, fn, p, p2);
1360 hubhandleaction(sk, fn, cmd, args);
1363 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1367 char *nick, *filename, *hubname;
1371 wchar_t *wnick, *wfile;
1375 if((p2 = strchr(p, ' ')) == NULL)
1380 if((p2 = strchr(p, 5)) == NULL)
1384 if((p2 = strchr(p, ' ')) == NULL)
1389 if((p2 = strchr(p, '/')) == NULL)
1394 if((p2 = strchr(p, 5)) == NULL)
1398 if((p2 = strstr(p, " (")) == NULL)
1401 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
1403 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1408 sr = newsrchres(&dcnet, wfile, wnick);
1409 if(sr->peernick != NULL)
1411 sr->peernick = swcsdup(wnick);
1416 if(!strncmp(hubname, "TTH:", 4))
1418 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1421 sr->hash = newhash(L"TTH", 24, buf);
1425 getfnetnode(sr->fn = fn);
1428 hubhandleaction(sk, fn, cmd, args);
1431 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1433 /* Do nothing for now. */
1436 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1439 struct wcspair *arg;
1443 for(arg = fn->args; arg != NULL; arg = arg->next)
1445 if(!wcscmp(arg->key, L"password"))
1448 if((arg == NULL) || ((mbspw = icwcstombs(arg->val, DCCHARSET)) == NULL))
1453 qstrf(sk, "$MyPass %s|", mbspw);
1455 fn->regstatus = FNNS_REG;
1456 hubhandleaction(sk, fn, cmd, args);
1459 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1464 fn->regstatus = FNNS_OP;
1465 hubhandleaction(sk, fn, cmd, args);
1468 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1470 struct dcexppeer *expect;
1472 if(peer->nativename != NULL)
1473 free(peer->nativename);
1474 peer->nativename = sstrdup(args);
1475 if(peer->wcsname != NULL)
1476 free(peer->wcsname);
1477 if((peer->wcsname = icmbstowcs(peer->nativename, DCCHARSET)) == NULL)
1484 for(expect = expected; expect != NULL; expect = expect->next)
1486 if(!strcmp(expect->nick, args))
1493 peer->fn = expect->fn;
1494 getfnetnode(peer->fn);
1495 freeexppeer(expect);
1500 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1504 struct transfer *transfer;
1506 if((p = strchr(args, ' ')) == NULL)
1509 if(!strcmp(args, "Upload"))
1511 if(!strcmp(args, "Download"))
1515 if((peer->transfer == NULL) || (mydir != peer->direction))
1520 if(peer->direction == TRNSD_DOWN)
1523 if(peer->wcsname == NULL)
1528 peer->direction = mydir;
1529 if(peer->direction == TRNSD_UP)
1531 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1533 if((transfer = finddownload(peer->wcsname)) == NULL)
1538 transferattach(transfer, &dctransfer, peer);
1539 transfersetstate(transfer, TRNS_HS);
1541 transfersetnick(transfer, peer->wcsname);
1542 peer->transfer = transfer;
1545 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1546 if(peer->key != NULL)
1547 qstrf(sk, "$Key %s|", peer->key);
1548 if(peer->direction == TRNSD_DOWN)
1553 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1556 struct transfer *transfer;
1558 if((p = strchr(args, ' ')) == NULL)
1561 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1563 key = dcmakekey(args);
1566 if(peer->wcsname == NULL)
1575 if((transfer = finddownload(peer->wcsname)) == NULL)
1577 peer->direction = TRNSD_UP;
1578 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1580 peer->direction = TRNSD_DOWN;
1581 transferattach(transfer, &dctransfer, peer);
1582 transfersetstate(transfer, TRNS_HS);
1584 transfersetnick(transfer, peer->wcsname);
1585 peer->transfer = transfer;
1586 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1587 qstrf(sk, "$Key %s|", key);
1589 if(peer->key != NULL)
1595 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1600 static void startdl(struct dcpeer *peer)
1602 peer->state = PEER_TRNS;
1603 transferstartdl(peer->transfer, peer->sk);
1604 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1605 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1608 static void startul(struct dcpeer *peer)
1610 peer->state = PEER_TRNS;
1611 transferstartul(peer->transfer, peer->sk);
1612 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
1615 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1619 if(peer->transfer == NULL)
1625 if(peer->transfer->size != size)
1627 transfersetsize(peer->transfer, size);
1632 qstr(peer->sk, "$Send|");
1635 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1637 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1639 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1640 resettransfer(peer->transfer);
1646 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1648 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1650 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1651 resettransfer(peer->transfer);
1664 {"MyList.DcLst", &hmlistname, updatehmlist},
1665 {"files.xml", &xmllistname, updatexmllist},
1666 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1670 static int openfilelist(char *name)
1675 for(i = 0; lists[i].name != NULL; i++)
1677 if(!strcmp(name, lists[i].name))
1681 if(lists[i].name == NULL)
1684 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1686 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1689 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1696 static struct sharecache *findbytth(char *tth32)
1700 struct sharecache *node;
1702 if((buf = base32decode(tth32, &buflen)) == NULL)
1709 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1711 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1718 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1720 struct sharecache *node;
1727 if((p2 = strchr(p, sep)) != NULL)
1729 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1736 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1741 struct sharecache *node;
1742 struct socket *lesk;
1746 if(peer->transfer == NULL)
1751 if((p = strchr(args, '$')) == NULL)
1757 if((offset = (atoi(p) - 1)) < 0)
1762 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1764 qstr(sk, "$Error Could not send file list|");
1767 } else if(fd >= 0) {
1768 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1769 transfersetpath(peer->transfer, buf2);
1775 qstr(sk, "$MaxedOut|");
1779 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1781 qstrf(sk, "$Error File not in share|");
1785 if((fd = opensharecache(node)) < 0)
1787 qstrf(sk, "$Error %s|", strerror(errno));
1791 buf = getfspath(node);
1792 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1793 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1795 transfersetpath(peer->transfer, buf2);
1798 if(fstat(fd, &sb) < 0)
1801 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1802 qstrf(sk, "$Error|");
1806 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1809 qstrf(sk, "$Error Offset out of range|");
1813 lesk = wrapsock(fd);
1814 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1816 qstrf(sk, "$FileLength %i|", peer->transfer->size);
1819 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1821 if(peer->transfer == NULL)
1826 if(peer->transfer->localend == NULL)
1835 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1840 size_t arrsize, arrdata;
1842 if(peer->supports != NULL)
1844 for(i = 0; peer->supports[i] != NULL; i++)
1845 free(peer->supports[i]);
1846 free(peer->supports);
1849 arrsize = arrdata = 0;
1853 if((p2 = strchr(p, ' ')) != NULL)
1857 addtobuf(arr, sstrdup(p));
1858 } while((p = p2) != NULL);
1859 addtobuf(arr, NULL);
1860 peer->supports = arr;
1863 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1867 int start, numbytes;
1868 char *charset, *buf;
1870 struct sharecache *node;
1872 struct socket *lesk;
1874 if(peer->transfer == NULL)
1880 if((p2 = strchr(p, ' ')) == NULL)
1888 if((p2 = strchr(p, ' ')) == NULL)
1896 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1899 charset = DCCHARSET;
1900 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1901 initcompress(peer, CPRS_ZLIB);
1902 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1904 qstr(sk, "$Error Could not send file list|");
1906 } else if(fd >= 0) {
1907 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1908 transfersetpath(peer->transfer, buf2);
1914 qstr(sk, "$MaxedOut|");
1917 if((node = resdcpath(p, charset, '\\')) == NULL)
1919 qstr(sk, "$Error File not in cache|");
1922 if((fd = opensharecache(node)) < 0)
1924 qstrf(sk, "$Error %s|", strerror(errno));
1927 buf = getfspath(node);
1928 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1929 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1931 transfersetpath(peer->transfer, buf2);
1934 if(fstat(fd, &sb) < 0)
1937 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1938 qstr(sk, "$Error|");
1941 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1944 qstr(sk, "$Error Offset out of range|");
1947 if((numbytes < 0) || (start + numbytes > sb.st_size))
1948 numbytes = sb.st_size - start;
1949 lesk = wrapsock(fd);
1950 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
1952 qstrf(sk, "$Sending %i|", numbytes);
1956 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1960 int start, numbytes;
1961 struct sharecache *node;
1963 struct socket *lesk;
1967 if(peer->transfer == NULL)
1972 if((argv = parseadc(args)) == NULL)
1977 if(parrlen(argv) < 4)
1982 start = atoi(argv[2]);
1983 numbytes = atoi(argv[3]);
1986 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
1988 qstr(sk, "$Error Could not send file list|");
1990 } else if(fd >= 0) {
1991 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
1992 transfersetpath(peer->transfer, wbuf);
1998 qstr(sk, "$MaxedOut|");
2001 if(!strncmp(argv[1], "TTH/", 4))
2003 if((node = findbytth(argv[1] + 4)) == NULL)
2005 qstr(sk, "$Error File not in cache|");
2009 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2011 qstr(sk, "$Error File not in cache|");
2015 if((fd = opensharecache(node)) < 0)
2017 qstrf(sk, "$Error %s|", strerror(errno));
2020 buf = getfspath(node);
2021 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2022 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2024 transfersetpath(peer->transfer, wbuf);
2027 if(!strcmp(argv[0], "file"))
2029 for(i = 4; argv[i] != NULL; i++)
2031 if(!strcmp(argv[i], "ZL1"))
2032 initcompress(peer, CPRS_ZLIB);
2034 if(fstat(fd, &sb) < 0)
2036 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2037 qstr(sk, "$Error|");
2040 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2042 qstr(sk, "$Error Offset out of range|");
2045 if((numbytes < 0) || (start + numbytes > sb.st_size))
2046 numbytes = sb.st_size - start;
2047 lesk = wrapsock(fd);
2048 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2051 qstr(sk, "$ADCSND");
2052 sendadc(sk, "file");
2053 sendadc(sk, argv[1]);
2054 sendadcf(sk, "%i", start);
2055 sendadcf(sk, "%i", numbytes);
2056 if(peer->compress == CPRS_ZLIB)
2060 } else if(!strcmp(argv[0], "tthl")) {
2062 * XXX: Implement full TTHL support.
2064 * In the meantime, this is better than nothing, since it at
2065 * least allows fetching of the TTH root if it isn't already
2070 qstr(sk, "$Error no TTHL data for virtual files|");
2073 qstr(sk, "$ADCSND");
2074 sendadc(sk, "tthl");
2075 sendadc(sk, argv[1]);
2079 sockqueue(sk, node->hashtth, 24);
2081 qstr(sk, "$Error Namespace not implemented|");
2091 static void handletthl(struct dcpeer *peer)
2095 while(peer->inbufdata >= 24)
2097 pushtigertree(&peer->tth, peer->inbuf);
2098 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2099 peer->curread += 24;
2101 if(peer->curread >= peer->totalsize)
2103 peer->state = PEER_CMD;
2104 synctigertree(&peer->tth);
2105 restigertree(&peer->tth, buf);
2106 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2111 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2114 int start, numbytes;
2116 if(peer->transfer == NULL)
2121 if((argv = parseadc(args)) == NULL)
2126 if(parrlen(argv) < 4)
2131 start = atoi(argv[2]);
2132 numbytes = atoi(argv[3]);
2133 if(!strcmp(argv[0], "tthl"))
2135 if((start != 0) || (numbytes % 24 != 0))
2137 /* Weird. Bail out. */
2141 peer->state = PEER_TTHL;
2142 peer->totalsize = numbytes;
2144 inittigertree(&peer->tth);
2146 } else if(!strcmp(argv[0], "file")) {
2147 if(start != peer->transfer->curpos)
2152 if(start + numbytes != peer->transfer->size)
2154 transfersetsize(peer->transfer, start + numbytes);
2159 if(peer->inbufdata > 0)
2161 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2162 peer->inbufdata = 0;
2163 transread(sk, peer);
2166 /* We certainly didn't request this...*/
2175 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2179 if(peer->transfer == NULL)
2184 numbytes = atoi(args);
2185 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2187 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2192 if(peer->inbufdata > 0)
2194 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2195 peer->inbufdata = 0;
2196 transread(sk, peer);
2202 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2207 hubhandleaction(sk, fn, cmd, args);
2211 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2217 static int hubreqconn(struct fnetpeer *peer)
2222 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2227 if((hub = peer->fn->data) == NULL)
2232 if((mbsnick = icwcstombs(peer->id, DCCHARSET)) == NULL)
2233 return(1); /* Shouldn't happen, of course, but who knows... */
2236 sendctm(peer->fn->sk, mbsnick);
2237 expectpeer(mbsnick, peer->fn);
2239 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2245 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2248 char *mbsstring, *mbsto;
2251 if((mbsto = icwcstombs(to, DCCHARSET)) == NULL)
2256 if((mbsstring = icwcstombs(string, DCCHARSET)) == NULL)
2261 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2268 if(strchr(mbsstring, '|') != NULL)
2279 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2281 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2284 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2291 static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2293 int minl, maxl, minr, maxr, retmin, retmax;
2298 findsizelimit(sexpr->l, &minl, &maxl);
2299 findsizelimit(sexpr->r, &minr, &maxr);
2300 retmin = (minl > minr)?minl:minr;
2301 if((maxl != -1) && (maxr != -1))
2302 retmax = (maxl < maxr)?maxl:maxr;
2311 findsizelimit(sexpr->l, &minl, &maxl);
2312 findsizelimit(sexpr->r, &minr, &maxr);
2313 retmin = (minl < minr)?minl:minr;
2314 if((maxl == -1) || (maxr == -1))
2317 retmax = (maxl > maxr)?maxl:maxr;
2320 findsizelimit(sexpr->l, &minl, &maxl);
2321 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2325 } else if((minl == 0) && (maxl != -1)) {
2328 } else if((minl != 0) && (maxl == -1)) {
2331 } else { /* This would yield two seperate intervals, which DC cannot handle */
2337 retmax = sexpr->d.n - 1;
2340 retmin = sexpr->d.n;
2341 retmax = sexpr->d.n;
2344 retmin = sexpr->d.n + 1;
2358 static struct hash *findsehash(struct sexpr *sexpr)
2360 struct hash *h1, *h2;
2365 if((h1 = findsehash(sexpr->l)) != NULL)
2367 if((h1 = findsehash(sexpr->r)) != NULL)
2371 h1 = findsehash(sexpr->l);
2372 h2 = findsehash(sexpr->r);
2377 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2378 return(sexpr->d.hash);
2385 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2388 struct wcslist *list, *cur;
2389 char *sstr, *buf, *p;
2390 size_t sstrsize, sstrdata;
2391 struct sockaddr *name;
2393 int minsize, maxsize;
2397 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2399 list = findsexprstrs(srch->sexpr);
2400 findsizelimit(srch->sexpr, &minsize, &maxsize);
2401 hash = findsehash(srch->sexpr);
2402 if((minsize != 0) && (maxsize != -1))
2404 /* Choose either minsize or maxsize by trying to determine
2405 * which choice will be most restrictive. The result can be
2406 * approximative at best anyway, so don't try too hard... */
2407 if((50000000 - maxsize) > (minsize - 50000000))
2413 sstrsize = sstrdata = 0;
2414 if((hash != NULL) && (hash->len == 24))
2416 /* Prioritize hash searches above all else */
2417 bufcat(sstr, "F?T?0?9?TTH:", 12);
2418 buf = base32encode(hash->buf, hash->len);
2420 bufcat(sstr, buf, 39);
2425 sizebuf2(sstr, sstrdata + 32, 1);
2426 snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
2427 } else if(maxsize != -1) {
2428 sizebuf2(sstr, sstrdata + 32, 1);
2429 snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
2431 bufcat(sstr, "F?F?0?1?", 8);
2435 for(cur = list; cur != NULL; cur = cur->next)
2437 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2439 /* Can't find anything anyway if the search expression
2440 * requires characters outside DC's charset. There's
2441 * nothing technically wrong with the search itself,
2442 * however, so return success. This should be
2443 * considered as an optimization. */
2450 addtobuf(sstr, '$');
2452 * It probably doesn't hurt if buf contains any extra
2453 * dollar signs - it will just result in extra search
2454 * terms, and the extraneous results will be filtered by
2455 * the search layer anyway. It hurts if it contains any
2456 * pipes, though, so let's sell them for money.
2458 for(p = buf; *p; p++)
2463 bufcat(sstr, buf, strlen(buf));
2467 /* Will match all files... :-/ */
2468 addtobuf(sstr, '.');
2474 if(sockgetremotename(udpsock, &name, &namelen) < 0)
2476 flog(LOG_WARNING, "cannot get address of UDP socket");
2478 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2482 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2486 fn->lastsrch = time(NULL);
2494 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2495 struct command hubcmds[] =
2497 {"$Lock", cc(cmd_lock)},
2498 {"$HubName", cc(cmd_hubname)},
2499 {"$Hello", cc(cmd_hello)},
2500 {"$Quit", cc(cmd_quit)},
2501 {"$NickList", cc(cmd_nicklist)},
2502 {"$OpList", cc(cmd_oplist)},
2503 {"$MyINFO", cc(cmd_myinfo)},
2504 {"$ForceMove", cc(cmd_forcemove)},
2505 {"$Search", cc(cmd_search)},
2506 {"$MultiSearch", cc(cmd_search)},
2507 {"$ConnectToMe", cc(cmd_connecttome)},
2508 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2509 {"$GetNetInfo", cc(cmd_getnetinfo)},
2510 {"$To:", cc(cmd_to)},
2511 {"$SR", cc(cmd_sr)},
2512 {"$UserCommand", cc(cmd_usercommand)},
2513 {"$GetPass", cc(cmd_getpass)},
2514 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2518 struct command peercmds[] =
2520 {"$MyNick", cc(cmd_mynick)},
2521 {"$Lock", cc(cmd_peerlock)},
2522 {"$Direction", cc(cmd_direction)},
2523 {"$Key", cc(cmd_key)},
2524 {"$FileLength", cc(cmd_filelength)},
2525 {"$Error", cc(cmd_error)},
2526 {"$MaxedOut", cc(cmd_maxedout)},
2527 {"$Get", cc(cmd_get)},
2528 {"$Send", cc(cmd_send)},
2529 {"$Supports", cc(cmd_supports)},
2530 {"$GetBlock", cc(cmd_getblock)},
2531 {"$UGetBlock", cc(cmd_getblock)},
2532 {"$GetZBlock", cc(cmd_getblock)},
2533 {"$UGetZBlock", cc(cmd_getblock)},
2534 {"$ADCGET", cc(cmd_adcget)},
2535 {"$ADCSND", cc(cmd_adcsnd), 1},
2536 {"$Sending", cc(cmd_sending), 1},
2541 static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2543 CBUNREG(transfer, trans_filterout, peer);
2546 peer->transfer = NULL;
2550 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2558 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2560 if(sockqueuesize(peer->sk) < 65536)
2562 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2564 if(peer->compress == CPRS_NONE)
2566 sockqueue(peer->sk, buf, bufsize);
2567 } else if(peer->compress == CPRS_ZLIB) {
2568 cstr = peer->cprsdata;
2569 cstr->next_in = buf;
2570 cstr->avail_in = bufsize;
2571 while(cstr->avail_in > 0)
2573 cstr->next_out = outbuf;
2574 cstr->avail_out = sizeof(outbuf);
2575 if((ret = deflate(cstr, 0)) != Z_OK)
2577 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2581 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2586 if(peer->state == PEER_SYNC)
2588 if(peer->compress == CPRS_ZLIB)
2590 cstr = peer->cprsdata;
2591 cstr->next_in = NULL;
2595 cstr->next_out = outbuf;
2596 cstr->avail_out = sizeof(outbuf);
2597 ret = deflate(cstr, Z_FINISH);
2598 if((ret != Z_OK) && (ret != Z_STREAM_END))
2600 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2604 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2605 } while(ret != Z_STREAM_END);
2611 peer->state = PEER_CMD;
2613 transfersetstate(transfer, TRNS_HS);
2614 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2615 peer->sk->writecb = NULL;
2622 static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2624 peer->state = PEER_SYNC;
2625 dctransgotdata(transfer, peer);
2628 static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2630 if(transferdatasize(transfer) < 65536)
2631 peer->sk->ignread = 0;
2634 static void transread(struct socket *sk, struct dcpeer *peer)
2638 struct transfer *transfer;
2640 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2642 if(peer->transfer == NULL)
2648 transferputdata(peer->transfer, buf, bufsize);
2650 if(peer->transfer->curpos >= peer->transfer->size)
2652 transfer = peer->transfer;
2653 transferdetach(transfer);
2654 transferendofdata(transfer);
2657 if(transferdatasize(peer->transfer) > 65535)
2661 static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2663 struct transfer *transfer;
2665 if((transfer = peer->transfer) == NULL)
2670 transferdetach(transfer);
2671 transferendofdata(transfer);
2674 static void transwrite(struct socket *sk, struct dcpeer *peer)
2676 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2678 if(peer->transfer == NULL)
2683 dctransgotdata(peer->transfer, peer);
2686 static void udpread(struct socket *sk, void *data)
2688 char *buf, *p, *p2, *hashbuf;
2689 size_t buflen, hashlen;
2690 char *nick, *filename, *hubname;
2692 struct fnetnode *fn, *myfn;
2695 wchar_t *wnick, *wfile;
2698 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2700 buf = srealloc(buf, buflen + 1);
2702 if(!strncmp(buf, "$SR ", 4))
2706 if((p2 = strchr(p, ' ')) == NULL)
2714 if((p2 = strchr(p, 5)) == NULL)
2721 if((p2 = strchr(p, ' ')) == NULL)
2729 if((p2 = strchr(p, '/')) == NULL)
2737 if((p2 = strchr(p, 5)) == NULL)
2744 if((p2 = strstr(p, " (")) == NULL)
2750 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
2755 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2763 if(!strncmp(hubname, "TTH:", 4))
2765 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2768 hash = newhash(L"TTH", 24, hashbuf);
2772 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2774 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2776 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2789 sr = newsrchres(&dcnet, wfile, wnick);
2790 if(sr->peernick != NULL)
2792 sr->peernick = swcsdup(wnick);
2798 getfnetnode(sr->fn = myfn);
2807 static void hubread(struct socket *sk, struct fnetnode *fn)
2814 hub = (struct dchub *)fn->data;
2815 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2817 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2819 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2820 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2822 p = hub->inbuf + hub->inbufdata;
2823 hub->inbufdata += datalen;
2824 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2827 newqcmd(&hub->queue, hub->inbuf);
2828 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2829 datalen = hub->inbufdata;
2834 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2839 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2845 if((buf = icwcstombs(newnick, DCCHARSET)) == NULL)
2847 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2852 if(hub == NULL) /* Not yet connected */
2857 if(hub->nativenick != NULL)
2858 free(hub->nativenick);
2859 hub->nativenick = buf;
2863 static struct dchub *newdchub(struct fnetnode *fn)
2867 new = smalloc(sizeof(*new));
2868 memset(new, 0, sizeof(*new));
2870 if(hubsetnick(fn, fn->mynick))
2871 fnetsetnick(fn, L"DoldaConnectUser-IN");
2872 /* IN as in Invalid Nick */
2876 static struct dcpeer *newdcpeer(struct socket *sk)
2880 new = smalloc(sizeof(*new));
2881 memset(new, 0, sizeof(*new));
2882 new->transfer = NULL;
2894 static void freedcpeer(struct dcpeer *peer)
2897 struct qcommand *qcmd;
2902 if(peer->next != NULL)
2903 peer->next->prev = peer->prev;
2904 if(peer->prev != NULL)
2905 peer->prev->next = peer->next;
2906 if(peer->transfer != NULL)
2908 if(peer->transfer->dir == TRNSD_UP)
2909 peer->transfer->close = 1;
2910 if(peer->transfer->dir == TRNSD_DOWN)
2911 resettransfer(peer->transfer);
2912 transferdetach(peer->transfer);
2914 if(peer->sk->data == peer)
2915 peer->sk->data = NULL;
2916 peer->sk->readcb = NULL;
2917 peer->sk->writecb = NULL;
2918 peer->sk->errcb = NULL;
2921 if(peer->supports != NULL)
2923 for(i = 0; peer->supports[i] != NULL; i++)
2924 free(peer->supports[i]);
2925 free(peer->supports);
2927 if(peer->inbuf != NULL)
2929 if(peer->key != NULL)
2931 if(peer->wcsname != NULL)
2932 free(peer->wcsname);
2933 if(peer->nativename != NULL)
2934 free(peer->nativename);
2935 if(peer->fn != NULL)
2936 putfnetnode(peer->fn);
2937 while((qcmd = ulqcmd(&peer->queue)) != NULL)
2943 static void hubconnect(struct fnetnode *fn)
2945 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
2946 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
2948 fn->data = newdchub(fn);
2953 static void hubdestroy(struct fnetnode *fn)
2956 struct qcommand *qcmd;
2958 hub = (struct dchub *)fn->data;
2961 if(fn->sk->data == fn)
2963 fn->sk->data = NULL;
2969 while((qcmd = ulqcmd(&hub->queue)) != NULL)
2971 if(hub->nativename != NULL)
2972 free(hub->nativename);
2973 if(hub->nativenick != NULL)
2974 free(hub->nativenick);
2975 if(hub->inbuf != NULL)
2980 static wchar_t *dcbasename(wchar_t *filename)
2984 if((ret = wcsrchr(filename, L'\\')) != NULL)
2989 static struct transferiface dctransfer =
2991 .detach = (void (*)(struct transfer *, void *))dctransdetach,
2992 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
2993 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
2994 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
2997 static struct fnet dcnet =
3000 .connect = hubconnect,
3001 .destroy = hubdestroy,
3002 .setnick = hubsetnick,
3003 .reqconn = hubreqconn,
3004 .sendchat = hubsendchat,
3005 .search = hubsearch,
3006 .filebasename = dcbasename
3009 static void peerread(struct socket *sk, struct dcpeer *peer)
3013 struct command *cmd;
3015 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3017 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3018 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3020 peer->inbufdata += datalen;
3021 if(peer->state == PEER_CMD)
3024 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3027 newqcmd(&peer->queue, peer->inbuf);
3028 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3030 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3033 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3036 peer->state = PEER_STOP;
3040 } else if(peer->state == PEER_TTHL) {
3045 static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3050 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3052 struct dcpeer *peer;
3059 peer = newdcpeer(sk);
3062 sk->readcb = (void (*)(struct socket *, void *))peerread;
3063 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3065 socksettos(sk, confgetint("fnet", "fnptos"));
3071 static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3073 struct dcpeer *peer;
3075 peer = newdcpeer(newsk);
3077 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3078 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3080 socksettos(newsk, confgetint("fnet", "fnptos"));
3083 static void updatehmlist(void)
3085 int i, lev, ic, ret;
3086 struct sharecache *node;
3087 char *buf, *buf2, numbuf[32];
3088 size_t bufsize, bufdata;
3092 buf = smalloc(bufsize = 65536);
3093 node = shareroot->child;
3098 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3100 for(i = 0; i < lev; i++)
3102 bufcat(buf, buf2, strlen(buf2));
3104 if(node->f.b.type == FILE_REG)
3107 sprintf(numbuf, "%i", node->size);
3108 bufcat(buf, numbuf, strlen(numbuf));
3115 if((node->child != NULL) && !ic)
3119 } else if(node->next != NULL) {
3122 while(node->next == NULL)
3125 node = node->parent;
3126 if(node == shareroot)
3129 if(node == shareroot)
3134 if(hmlistname != NULL)
3139 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3140 if((fd = mkstemp(hmlistname)) < 0)
3142 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3147 * I do not want to implement a good Huffman encoder, and it's not
3148 * like Huffman encoding actually yields any impressive results
3149 * for DC file lists anyway, so I'll just output a bogus
3150 * tree. Implement a good encoder if you want to.
3152 write(fd, "HE3\r\0", 5);
3153 write(fd, &bufdata, 4);
3155 write(fd, &ibuf, 2);
3157 for(i = 0; i < 256; i++)
3160 write(fd, &ibuf, 1);
3162 for(i = 0; i < 256; i++)
3164 for(buf2 = buf; bufdata > 0;)
3166 if((ret = write(fd, buf2, bufdata)) < 0)
3168 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3179 static struct xmlent
3186 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3190 static wchar_t *escapexml(wchar_t *src)
3192 static wchar_t *buf = NULL;;
3195 size_t bufsize, bufdata;
3201 bufsize = bufdata = 0;
3202 for(; *src != L'\0'; src++)
3205 if((c > 0) && (c < 32))
3207 bufcat(buf, L"&#", 2);
3208 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3209 bufcat(buf, nbuf, ret);
3210 addtobuf(buf, L';');
3212 for(ent = entities; ent->ent != NULL; ent++)
3216 bufcat(buf, ent->ent, wcslen(ent->ent));
3220 if(ent->ent == NULL)
3221 addtobuf(buf, *src);
3224 addtobuf(buf, L'\0');
3228 static void updatexmllist(void)
3232 char cidbuf[14], *namebuf;
3234 struct sharecache *node;
3236 if(xmllistname != NULL)
3238 unlink(xmllistname);
3241 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3242 if((fd = mkstemp(xmllistname)) < 0)
3244 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3249 if((fs = fdopen(fd, "w")) == NULL)
3251 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3252 unlink(xmllistname);
3258 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3259 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3260 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3262 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, DCIDFULL);
3264 node = shareroot->child;
3268 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3270 for(i = 0; i < lev; i++)
3272 if(node->child != NULL)
3274 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3279 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3280 if(node->f.b.hastth)
3282 hashbuf = base32encode(node->hashtth, 24);
3283 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3286 fprintf(fs, "/>\r\n");
3288 while(node->next == NULL)
3290 node = node->parent;
3291 if(node == shareroot)
3296 for(i = 0; i < lev; i++)
3298 fprintf(fs, "</Directory>\r\n");
3301 if(node == shareroot)
3307 #ifdef DCPP_MASQUERADE
3308 fprintf(fs, "</FileListing>");
3310 fprintf(fs, "</FileListing>\r\n");
3315 static void updatexmlbz2list(void)
3324 if(xmllistname == NULL)
3326 if((in = fopen(xmllistname, "r")) == NULL)
3328 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3331 if(xmlbz2listname != NULL)
3333 unlink(xmlbz2listname);
3334 free(xmlbz2listname);
3336 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3337 if((fd = mkstemp(xmlbz2listname)) < 0)
3339 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3340 free(xmlbz2listname);
3341 xmlbz2listname = NULL;
3345 if((real = fdopen(fd, "w")) == NULL)
3347 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3349 unlink(xmlbz2listname);
3350 free(xmlbz2listname);
3351 xmlbz2listname = NULL;
3355 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3358 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3360 unlink(xmlbz2listname);
3361 free(xmlbz2listname);
3362 xmlbz2listname = NULL;
3368 bufdata = fread(buf, 1, sizeof(buf), in);
3369 BZ2_bzWrite(&err, out, buf, bufdata);
3372 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3376 static int shareupdate(unsigned long long uusharesize, void *data)
3384 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3387 struct command *cmd;
3389 if((p = strchr(qcmd->string, ' ')) != NULL)
3391 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3393 if(!strcmp(cmd->name, qcmd->string))
3396 if(cmd->handler != NULL)
3397 cmd->handler(sk, data, qcmd->string, p);
3400 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3404 static int run(void)
3406 struct fnetnode *fn, *nextfn;
3408 struct dcpeer *peer, *nextpeer;
3409 struct qcommand *qcmd;
3413 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3416 if(fn->fnet != &dcnet)
3418 if(fn->data == NULL)
3420 hub = (struct dchub *)fn->data;
3421 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3423 if(*qcmd->string == '$')
3425 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3426 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3427 } else if(*qcmd->string != 0) {
3428 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3435 for(peer = peers; peer != NULL; peer = nextpeer)
3437 nextpeer = peer->next;
3438 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3440 if(*qcmd->string == '$')
3441 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3450 static void preinit(int hup)
3457 static int updateudpport(struct configvar *var, void *uudata)
3459 struct sockaddr_in addr;
3460 struct socket *newsock;
3462 memset(&addr, 0, sizeof(addr));
3463 addr.sin_family = AF_INET;
3464 addr.sin_port = htons(var->val.num);
3465 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3467 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3470 newsock->readcb = udpread;
3477 static int updatetcpport(struct configvar *var, void *uudata)
3479 struct sockaddr_in addr;
3480 struct socket *newsock;
3482 memset(&addr, 0, sizeof(addr));
3483 addr.sin_family = AF_INET;
3484 addr.sin_port = htons(var->val.num);
3485 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3486 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3493 static int init(int hup)
3495 struct sockaddr_in addr;
3499 GCBREG(sharechangecb, shareupdate, NULL);
3504 addr.sin_family = AF_INET;
3505 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3506 addr.sin_port = htons(confgetint("dc", "udpport"));
3507 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3509 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3512 udpsock->readcb = udpread;
3513 addr.sin_port = htons(confgetint("dc", "tcpport"));
3514 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3515 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3516 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3517 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3518 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3523 static void terminate(void)
3525 if(hmlistname != NULL)
3530 if(xmllistname != NULL)
3532 unlink(xmllistname);
3535 if(xmlbz2listname != NULL)
3537 unlink(xmlbz2listname);
3538 free(xmlbz2listname);
3542 static struct configvar myvars[] =
3544 {CONF_VAR_STRING, "desc", {.str = L""}},
3545 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3546 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3547 {CONF_VAR_INT, "udpport", {.num = 0}},
3548 {CONF_VAR_INT, "tcpport", {.num = 0}},
3552 static struct module me =
3561 .terminate = terminate,