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 timer *timeout;
132 struct qcommand *queue;
133 struct transfer *transfer;
135 int ptclose; /* Close after transfer is complete */
136 int accepted; /* If false, we connected, otherwise, we accepted */
138 int direction; /* Using the constants from transfer.h */
140 int hascurpos, fetchingtthl, notthl;
141 struct tigertreehash tth;
149 static struct fnet dcnet;
150 static struct transferiface dctransfer;
151 static struct socket *udpsock = NULL;
152 static struct socket *tcpsock = NULL;
153 static struct dcpeer *peers = NULL;
155 static struct dcexppeer *expected = NULL;
156 static char *hmlistname = NULL;
157 static char *xmllistname = NULL;
158 static char *xmlbz2listname = NULL;
160 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
161 static void freedcpeer(struct dcpeer *peer);
162 static void transread(struct socket *sk, struct dcpeer *peer);
163 static void transerr(struct socket *sk, int err, struct dcpeer *peer);
164 static void transwrite(struct socket *sk, struct dcpeer *peer);
165 static void updatehmlist(void);
166 static void updatexmllist(void);
167 static void updatexmlbz2list(void);
168 static void requestfile(struct dcpeer *peer);
170 static int reservedchar(unsigned char c)
172 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
175 /* Oh, how I despise having to do this... */
176 static char *dcmakekey(char *lock)
182 buf = smalloc(strlen(lock));
185 for(i = 0; lock[i]; i++)
187 buf[i] = lock[i] ^ save;
188 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
190 if((i != 0) && reservedchar(buf[i]))
195 buf[0] ^= buf[i - 1];
196 if(reservedchar(buf[0]))
200 key = smalloc(len + 1);
202 for(i = 0; lock[i] != 0; i++)
204 if(reservedchar(buf[i]))
205 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
207 key[offset++] = buf[i];
214 static char *pathnmdc2adc(char *path)
217 size_t retsize, retdata;
219 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
220 return(sstrdup(path));
222 retsize = retdata = 0;
229 addtobuf(ret, *path);
235 static int isdchash(struct hash *hash)
237 if(wcscmp(hash->algo, L"TTH"))
244 static int supports(struct dcpeer *peer, char *cap)
248 if(peer->supports == NULL)
250 for(p = peer->supports; *p != NULL; p++)
252 if(!strcasecmp(*p, cap))
258 static void endcompress(struct dcpeer *peer)
260 if(peer->compress == CPRS_ZLIB)
262 deflateEnd(peer->cprsdata);
263 free(peer->cprsdata);
265 peer->compress = CPRS_NONE;
268 static void initcompress(struct dcpeer *peer, int algo)
273 peer->compress = algo;
274 if(algo == CPRS_ZLIB)
276 peer->cprsdata = smalloc(sizeof(z_stream));
277 memset(peer->cprsdata, 0, sizeof(z_stream));
278 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
280 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
286 static void unquote(wchar_t *in)
290 for(p = in; *p != L'\0'; p++)
294 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
301 if(!wcscmp(p + 1, L"amp"))
304 } else if(p[1] == L'#') {
305 nc = ucptowc(wcstol(p + 2, NULL, 10));
314 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
319 static void freeexppeer(struct dcexppeer *ep)
322 ep->next->prev = ep->prev;
324 ep->prev->next = ep->next;
329 if(ep->expire != NULL)
330 canceltimer(ep->expire);
334 static void exppeerexpire(int cancelled, struct dcexppeer *ep)
341 static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
343 struct dcexppeer *ep;
345 ep = smalloc(sizeof(*ep));
346 ep->nick = sstrdup(nick);
347 getfnetnode(ep->fn = fn);
348 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
357 static struct qcommand *newqcmd(struct qcommand **queue, char *string)
359 struct qcommand *new;
361 while(*queue != NULL)
362 queue = &(*queue)->next;
363 new = smalloc(sizeof(*new));
364 new->string = sstrdup(string);
370 static struct qcommand *ulqcmd(struct qcommand **queue)
372 struct qcommand *qcmd;
374 if((qcmd = *queue) == NULL)
380 static void freeqcmd(struct qcommand *qcmd)
386 static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
388 wchar_t *chat, *wfrom, *wpeer;
390 struct fnetpeer *peer;
392 end = string + strlen(string);
393 while((p = strchr(string, 13)) != NULL)
394 memmove(p, p + 1, (end-- - p));
397 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
398 string += strlen(from) + 2;
399 if((wfrom = icmbstowcs(from, DCCHARSET)) == NULL)
401 wpeer = swcsdup(wfrom);
407 for(p = string + 1; *p; p++)
409 if((*p == ' ') || (*p == '>'))
417 if((wpeer = icmbstowcs(string + 1, DCCHARSET)) == NULL)
423 wpeer = swcsdup(L"");
425 if((chat = icmbstowcs(string, DCCHARSET)) == NULL)
435 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
436 fnethandlechat(fn, 1, wfrom, wpeer, chat);
438 fnethandlechat(fn, 0, wfrom, wpeer, chat);
440 fnethandlechat(fn, 1, L"", wpeer, chat);
448 static void peertimeout(int cancelled, struct dcpeer *peer)
450 peer->timeout = NULL;
456 static void sendadc(struct socket *sk, char *arg)
459 size_t bufsize, bufdata;
462 bufsize = bufdata = 0;
468 bufcat(buf, "\\s", 2);
469 } else if(*arg == '\n') {
470 bufcat(buf, "\\n", 2);
471 } else if(*arg == '\\') {
472 bufcat(buf, "\\\\", 2);
477 sockqueue(sk, buf, bufdata);
481 static void sendadcf(struct socket *sk, char *arg, ...)
487 buf = vsprintf2(arg, args);
495 static char **parseadc(char *args)
498 size_t retbufsize, retbufdata;
500 size_t bufsize, bufdata;
505 retbufsize = retbufdata = bufsize = bufdata = 0;
514 else if(*args != ' ')
518 if((*args == ' ') || (*args == 0))
521 addtobuf(retbuf, buf);
523 bufsize = bufdata = 0;
526 } else if(*args == '\\') {
529 addtobuf(buf, *args);
538 addtobuf(retbuf, NULL);
541 } else if((*args == 's') || (*args == ' ')) {
543 } else if(*args == 'n') {
545 } else if(*args == '\\') {
555 addtobuf(retbuf, NULL);
559 /* Macros useful in command handlers */
560 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
561 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
562 #define qstrf(sk, strandargs...) \
565 if((__buf__ = sprintf2(strandargs)) != NULL) { \
566 sockqueue(sk, __buf__, strlen(__buf__)); \
571 static char *tr(char *str, char *trans)
575 for(; *trans; trans += 2)
577 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
583 static char *getadcid(struct dcpeer *peer)
589 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
591 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
593 buf = base32encode(peer->transfer->hash->buf, 24);
594 ret = sprintf2("TTH/%.39s", buf);
597 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
599 ret = pathnmdc2adc(buf);
606 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
608 if(!wcscmp(cmd, L"resume"))
612 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
615 transfer->curpos = wcstol(arg, NULL, 10);
624 static void sendmynick(struct dcpeer *peer)
628 hub = (peer->fn == NULL)?NULL:(peer->fn->data);
630 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), DCCHARSET, "DoldaConnectUser-IN"));
632 qstrf(peer->sk, "$MyNick %s|", hub->nativenick);
635 static void sendpeerlock(struct dcpeer *peer)
637 #ifdef DCPP_MASQUERADE
638 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
640 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
644 static void sendsupports(struct dcpeer *peer)
646 #ifdef DCPP_MASQUERADE
647 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
649 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
653 static void requestfile(struct dcpeer *peer)
657 if(peer->transfer->size == -1)
659 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
661 transferseterror(peer->transfer, TRNSE_NOTFOUND);
665 /* The transfer will be restarted later from
666 * cmd_filelength when it detects that the sizes
668 qstrf(peer->sk, "$Get %s$1|", buf);
671 if((peer->transfer->hash == NULL) && !peer->notthl)
673 if(supports(peer, "adcget") && supports(peer, "tthl"))
675 qstr(peer->sk, "$ADCGET");
676 sendadc(peer->sk, "tthl");
677 if((buf = getadcid(peer)) == NULL)
679 transferseterror(peer->transfer, TRNSE_NOTFOUND);
683 sendadc(peer->sk, buf);
685 sendadc(peer->sk, "0");
686 sendadc(peer->sk, "-1");
688 peer->fetchingtthl = 1;
694 if(forkfilter(peer->transfer))
696 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
700 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
703 if(supports(peer, "adcget"))
705 qstr(peer->sk, "$ADCGET");
706 sendadc(peer->sk, "file");
707 if((buf = getadcid(peer)) == NULL)
709 transferseterror(peer->transfer, TRNSE_NOTFOUND);
713 sendadc(peer->sk, buf);
715 sendadcf(peer->sk, "%i", peer->transfer->curpos);
716 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
718 } else if(supports(peer, "xmlbzlist")) {
719 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
721 transferseterror(peer->transfer, TRNSE_NOTFOUND);
725 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
727 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
729 transferseterror(peer->transfer, TRNSE_NOTFOUND);
733 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
737 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
741 struct fnetnode *cfn;
745 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
746 buf = tr(icswcstombs(confgetstr("dc", "desc"), DCCHARSET, "Charset_conv_failure"), "$_|_");
747 qstrf(sk, "%s", buf);
749 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
751 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
753 if(cfn->regstatus == FNNS_OP)
755 else if(cfn->regstatus == FNNS_REG)
761 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
764 (tcpsock == NULL)?'P':'A',
766 confgetint("transfer", "slots")
769 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), DCCHARSET, "Charset_conv_failure"), "$_|_");
770 qstrf(sk, "%s\x01$", buf);
771 buf = tr(icswcstombs(confgetstr("dc", "email"), DCCHARSET, "Charset_conv_failure"), "$_|_");
772 qstrf(sk, "%s$", buf);
773 qstrf(sk, "%llu$|", sharesize);
776 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
781 if(!strcmp(cmd, "$Lock"))
783 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
784 } else if(!strcmp(cmd, "$Hello")) {
785 if(fn->state == FNN_HS)
787 qstrf(sk, "$Version 1,0091|");
788 qstrf(sk, "$GetNickList|");
790 fnetsetstate(fn, FNN_EST);
792 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
797 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
804 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
806 if((p = strchr(args, ' ')) != NULL)
810 #ifdef DCPP_MASQUERADE
811 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
813 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
816 key = dcmakekey(args);
817 qstrf(sk, "$Key %s|", key);
819 hubhandleaction(sk, fn, cmd, args);
822 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
828 if(hub->nativename == NULL)
829 free(hub->nativename);
830 hub->nativename = sstrdup(args);
831 buf = icmbstowcs(args, DCCHARSET);
832 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
835 hubhandleaction(sk, fn, cmd, args);
838 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
844 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
846 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
847 fnetaddpeer(fn, nick, nick);
849 hubhandleaction(sk, fn, cmd, args);
852 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
855 struct fnetpeer *peer;
859 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
861 if((peer = fnetfindpeer(fn, nick)) != NULL)
864 hubhandleaction(sk, fn, cmd, args);
867 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
872 struct fnetpeer *peer, *npeer;
875 for(peer = fn->peers; peer != NULL; peer = peer->next)
876 peer->flags.b.delete = 1;
877 while((p = strstr(args, "$$")) != NULL)
880 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
882 if((peer = fnetfindpeer(fn, buf)) == NULL)
883 peer = fnetaddpeer(fn, buf, buf);
885 peer->flags.b.delete = 0;
887 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
891 for(peer = fn->peers; peer != NULL; peer = npeer)
894 if(peer->flags.b.delete)
897 hubhandleaction(sk, fn, cmd, args);
900 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
905 struct fnetpeer *peer;
908 for(peer = fn->peers; peer != NULL; peer = peer->next)
909 peer->flags.b.op = 0;
910 while((p = strstr(args, "$$")) != NULL)
913 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
915 if((peer = fnetfindpeer(fn, buf)) != NULL)
916 peer->flags.b.op = 1;
921 hubhandleaction(sk, fn, cmd, args);
924 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
927 wchar_t *buf, *wp, *wp2;
929 struct fnetpeer *peer;
934 if(strncmp(p, "$ALL ", 5))
937 if((p2 = strchr(p, ' ')) == NULL)
940 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
942 if((peer = fnetfindpeer(fn, buf)) == NULL)
943 peer = fnetaddpeer(fn, buf, buf);
946 if((p2 = strstr(p, "$ $")) == NULL)
949 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
951 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcschr(buf, L'<')) != NULL))
953 buf[wcslen(buf) - 1] = L'\0';
955 if((wp2 = wcschr(wp, L' ')) != NULL)
958 fnetpeersetstr(peer, L"dc-client", wp);
962 if((wp2 = wcschr(wp, L',')) != NULL)
966 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
967 fnetpeersetstr(peer, abuf, wp + 2);
969 } while(wp2 != NULL);
972 fnetpeersetstr(peer, L"descr", buf);
975 if((p2 = strchr(p, '$')) == NULL)
978 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
980 fnetpeersetstr(peer, L"dc-speed", buf);
983 if((p2 = strchr(p, '$')) == NULL)
986 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
988 fnetpeersetstr(peer, L"email", buf);
993 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
994 hubhandleaction(sk, fn, cmd, args);
997 /* I do not implement the fully in that I do not disconnect from the
998 * old hub. I do this since I believe that if the hub owner really
999 * wants to get rid of us, then it is his responsibility to disconnect
1001 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1004 struct fnetnode *newfn;
1008 if(strchr(args, ':') == NULL)
1010 args = strcpy(smalloc(strlen(args) + 5), args);
1011 strcat(args, ":411");
1016 if((newfn = fnetinitconnect(L"dc", args, NULL)) != NULL)
1018 linkfnetnode(newfn);
1021 hubhandleaction(sk, fn, cmd, args);
1026 static char *getdcpath(struct sharecache *node, size_t *retlen)
1031 if(node->parent == NULL)
1033 if(node->parent == shareroot)
1035 if((buf = icwcstombs(node->name, DCCHARSET)) == NULL)
1038 *retlen = strlen(buf);
1041 if((buf2 = icwcstombs(node->name, DCCHARSET)) == NULL)
1043 if((buf = getdcpath(node->parent, &len)) == NULL)
1048 len2 = strlen(buf2);
1049 buf = srealloc(buf, len + 1 + len2 + 1);
1051 strcpy(buf + len, buf2);
1052 buf[len + len2] = 0;
1055 *retlen = len + len2;
1061 * This is the main share searching function for Direct Connect
1062 * peers. Feel free to optimize it if you feel the need for it. I
1063 * haven't ever seen it take any noticable CPU time anyway, so I
1064 * haven't felt that need.
1066 * It may feel dubious to just return the directory when all terms are
1067 * satisfied rather than all the files in it, but it really benefits
1068 * everyone: Less cycles used for us, less UDP squelching for active
1069 * searchers, and less bandwidth waste for hubs when serving passive
1072 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1077 char *prefix, *infix, *postfix, *buf, *buf2;
1079 struct sockaddr_in addr;
1080 struct sharecache *node;
1081 int minsize, maxsize;
1083 int termnum, satisfied, skipcheck;
1084 int level, tersat[32];
1089 if((p = strchr(args, ' ')) == NULL)
1093 memset(terms, 0, sizeof(terms));
1094 prefix = infix = postfix = NULL;
1098 if(!strncmp(args, "Hub:", 4))
1100 if(!strcmp(cmd, "$MultiSearch"))
1102 if(!strcmp(args + 4, hub->nativenick))
1104 prefix = sprintf2("$SR %s ", hub->nativenick);
1105 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1106 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1110 if((p2 = strchr(args, ':')) == NULL)
1113 addr.sin_family = AF_INET;
1114 if(!inet_aton(args, &addr.sin_addr))
1116 addr.sin_port = htons(atoi(p2));
1117 prefix = sprintf2("$SR %s ", hub->nativenick);
1118 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1119 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1120 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1123 minsize = maxsize = -1;
1132 if((*(p++) == 'T') && (minsize == 0))
1139 if((p2 = strchr(p, '?')) == NULL)
1154 if((*p2 == 0) || (*p2 == '$'))
1162 if(!dotth && !strncmp(p, "TTH:", 4))
1165 if((buf = base32decode(p + 4, &buflen)) == NULL)
1169 memcpy(hashtth, buf, 24);
1172 if((terms[termnum] = icmbstowcs(p, DCCHARSET)) != NULL)
1183 node = shareroot->child;
1185 for(i = 0; i < termnum; i++)
1191 if(node->f.b.type == FILE_REG)
1193 if((minsize >= 0) && (node->size < minsize))
1195 if((maxsize >= 0) && (node->size > maxsize))
1198 if(!skipcheck && dotth)
1200 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1205 for(i = 0; i < termnum; i++)
1209 if(wcsexists(node->name, terms[i]))
1213 } else if(node->child == NULL) {
1218 if(!skipcheck && (satisfied == termnum))
1220 if((buf = getdcpath(node, NULL)) != NULL)
1222 if(node->f.b.hastth)
1224 buf2 = base32encode(node->hashtth, 24);
1225 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1228 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1233 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1235 while(node->next == NULL)
1237 if((node = node->parent) == shareroot)
1241 if(node == shareroot)
1243 for(i = 0; i < termnum; i++)
1245 if(tersat[i] >= level)
1258 hubhandleaction(sk, fn, cmd, args);
1269 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1273 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1277 struct socket *newsk;
1278 struct sockaddr_in addr;
1281 if((p = strchr(args, ' ')) == NULL)
1284 if(strcmp(args, hub->nativenick))
1286 addr.sin_family = AF_INET;
1288 if((p = strchr(args, ':')) == NULL)
1291 addr.sin_port = htons(atoi(p));
1292 if(!inet_aton(args, &addr.sin_addr))
1294 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1296 hubhandleaction(sk, fn, cmd, args);
1299 static void sendctm(struct socket *sk, char *nick)
1301 struct sockaddr *addr;
1306 if(sockgetremotename(tcpsock, &addr, &addrlen) < 0)
1308 if(addr->sa_family == AF_INET)
1309 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1311 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1315 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1321 if((p = strchr(args, ' ')) == NULL)
1324 if(strcmp(p, hub->nativenick))
1327 expectpeer(args, fn);
1328 hubhandleaction(sk, fn, cmd, args);
1331 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1334 struct fnetnode *node;
1339 for(node = fnetnodes; node != NULL; node = node->next)
1341 if(node->state == FNN_EST)
1344 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1345 hubhandleaction(sk, fn, cmd, args);
1348 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1355 if((p2 = strchr(p, ' ')) == NULL)
1359 if((p2 = strchr(p, ' ')) == NULL)
1362 if(strcmp(p, "From:"))
1365 if((p2 = strstr(p, " $")) == NULL)
1369 hubrecvchat(fn->sk, fn, p, p2);
1370 hubhandleaction(sk, fn, cmd, args);
1373 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1377 char *nick, *filename, *hubname;
1381 wchar_t *wnick, *wfile;
1385 if((p2 = strchr(p, ' ')) == NULL)
1390 if((p2 = strchr(p, 5)) == NULL)
1394 if((p2 = strchr(p, ' ')) == NULL)
1399 if((p2 = strchr(p, '/')) == NULL)
1404 if((p2 = strchr(p, 5)) == NULL)
1408 if((p2 = strstr(p, " (")) == NULL)
1411 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
1413 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1418 sr = newsrchres(&dcnet, wfile, wnick);
1419 if(sr->peernick != NULL)
1421 sr->peernick = swcsdup(wnick);
1426 if(!strncmp(hubname, "TTH:", 4))
1428 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1431 sr->hash = newhash(L"TTH", 24, buf);
1435 getfnetnode(sr->fn = fn);
1438 hubhandleaction(sk, fn, cmd, args);
1441 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1443 /* Do nothing for now. */
1446 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1449 struct wcspair *arg;
1453 for(arg = fn->args; arg != NULL; arg = arg->next)
1455 if(!wcscmp(arg->key, L"password"))
1458 if((arg == NULL) || ((mbspw = icwcstombs(arg->val, DCCHARSET)) == NULL))
1463 qstrf(sk, "$MyPass %s|", mbspw);
1465 fn->regstatus = FNNS_REG;
1466 hubhandleaction(sk, fn, cmd, args);
1469 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1474 fn->regstatus = FNNS_OP;
1475 hubhandleaction(sk, fn, cmd, args);
1478 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1480 struct dcexppeer *expect;
1482 if(peer->nativename != NULL)
1483 free(peer->nativename);
1484 peer->nativename = sstrdup(args);
1485 if(peer->wcsname != NULL)
1486 free(peer->wcsname);
1487 if((peer->wcsname = icmbstowcs(peer->nativename, DCCHARSET)) == NULL)
1494 for(expect = expected; expect != NULL; expect = expect->next)
1496 if(!strcmp(expect->nick, args))
1503 peer->fn = expect->fn;
1504 getfnetnode(peer->fn);
1505 freeexppeer(expect);
1510 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1514 struct transfer *transfer;
1516 if((p = strchr(args, ' ')) == NULL)
1519 if(!strcmp(args, "Upload"))
1521 if(!strcmp(args, "Download"))
1525 if((peer->transfer == NULL) || (mydir != peer->direction))
1530 if(peer->direction == TRNSD_DOWN)
1533 if(peer->wcsname == NULL)
1538 peer->direction = mydir;
1539 if(peer->direction == TRNSD_UP)
1541 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1543 if((transfer = finddownload(peer->wcsname)) == NULL)
1548 transferattach(transfer, &dctransfer, peer);
1549 transfersetstate(transfer, TRNS_HS);
1551 transfersetnick(transfer, peer->wcsname);
1552 peer->transfer = transfer;
1555 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1556 if(peer->key != NULL)
1557 qstrf(sk, "$Key %s|", peer->key);
1558 if(peer->direction == TRNSD_DOWN)
1563 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1566 struct transfer *transfer;
1568 if((p = strchr(args, ' ')) == NULL)
1571 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1573 key = dcmakekey(args);
1576 if(peer->wcsname == NULL)
1585 if((transfer = finddownload(peer->wcsname)) == NULL)
1587 peer->direction = TRNSD_UP;
1588 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1590 peer->direction = TRNSD_DOWN;
1591 transferattach(transfer, &dctransfer, peer);
1592 transfersetstate(transfer, TRNS_HS);
1594 transfersetnick(transfer, peer->wcsname);
1595 peer->transfer = transfer;
1596 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1597 qstrf(sk, "$Key %s|", key);
1599 if(peer->key != NULL)
1605 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1610 static void startdl(struct dcpeer *peer)
1612 if(peer->timeout != NULL)
1613 canceltimer(peer->timeout);
1614 peer->state = PEER_TRNS;
1615 transferstartdl(peer->transfer, peer->sk);
1616 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1617 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1620 static void startul(struct dcpeer *peer)
1622 if(peer->timeout != NULL)
1623 canceltimer(peer->timeout);
1624 peer->state = PEER_TRNS;
1625 transferstartul(peer->transfer, peer->sk);
1626 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
1629 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1632 struct transfer *transfer;
1634 if(peer->transfer == NULL)
1640 if(peer->transfer->size != size)
1642 transfersetsize(peer->transfer, size);
1643 transfer = peer->transfer;
1645 trytransferbypeer(transfer->fnet, transfer->peerid);
1649 qstr(peer->sk, "$Send|");
1652 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1654 if(peer->fetchingtthl)
1656 peer->fetchingtthl = 0;
1661 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1663 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1664 resettransfer(peer->transfer);
1670 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1672 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1674 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1675 resettransfer(peer->transfer);
1688 {"MyList.DcLst", &hmlistname, updatehmlist},
1689 {"files.xml", &xmllistname, updatexmllist},
1690 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1694 static int openfilelist(char *name)
1699 for(i = 0; lists[i].name != NULL; i++)
1701 if(!strcmp(name, lists[i].name))
1705 if(lists[i].name == NULL)
1708 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1710 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1713 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1720 static struct sharecache *findbytth(char *tth32)
1724 struct sharecache *node;
1726 if((buf = base32decode(tth32, &buflen)) == NULL)
1733 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1735 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1742 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1744 struct sharecache *node;
1751 if((p2 = strchr(p, sep)) != NULL)
1753 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1760 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1765 struct sharecache *node;
1766 struct socket *lesk;
1770 if(peer->transfer == NULL)
1775 if((p = strchr(args, '$')) == NULL)
1781 if((offset = (atoi(p) - 1)) < 0)
1786 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1788 qstr(sk, "$Error Could not send file list|");
1791 } else if(fd >= 0) {
1792 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1793 transfersetpath(peer->transfer, buf2);
1794 peer->transfer->flags.b.minislot = 1;
1798 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1800 qstrf(sk, "$Error File not in share|");
1804 if((fd = opensharecache(node)) < 0)
1806 qstrf(sk, "$Error %s|", strerror(errno));
1810 buf = getfspath(node);
1811 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1812 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1814 transfersetpath(peer->transfer, buf2);
1817 if(fstat(fd, &sb) < 0)
1820 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1821 qstrf(sk, "$Error|");
1825 if(sb.st_size < 65536)
1826 peer->transfer->flags.b.minislot = 1;
1827 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1829 qstr(sk, "$MaxedOut|");
1833 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1836 qstrf(sk, "$Error Offset out of range|");
1840 lesk = wrapsock(fd);
1841 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1843 qstrf(sk, "$FileLength %i|", peer->transfer->size);
1846 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1848 if(peer->transfer == NULL)
1853 if(peer->transfer->localend == NULL)
1862 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1867 size_t arrsize, arrdata;
1869 if(peer->supports != NULL)
1871 for(i = 0; peer->supports[i] != NULL; i++)
1872 free(peer->supports[i]);
1873 free(peer->supports);
1876 arrsize = arrdata = 0;
1880 if((p2 = strchr(p, ' ')) != NULL)
1884 addtobuf(arr, sstrdup(p));
1885 } while((p = p2) != NULL);
1886 addtobuf(arr, NULL);
1887 peer->supports = arr;
1890 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1894 int start, numbytes;
1895 char *charset, *buf;
1897 struct sharecache *node;
1899 struct socket *lesk;
1901 if(peer->transfer == NULL)
1907 if((p2 = strchr(p, ' ')) == NULL)
1915 if((p2 = strchr(p, ' ')) == NULL)
1923 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1926 charset = DCCHARSET;
1927 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1928 initcompress(peer, CPRS_ZLIB);
1929 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1931 qstr(sk, "$Error Could not send file list|");
1933 } else if(fd >= 0) {
1934 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1935 transfersetpath(peer->transfer, buf2);
1936 peer->transfer->flags.b.minislot = 1;
1940 if((node = resdcpath(p, charset, '\\')) == NULL)
1942 qstr(sk, "$Error File not in cache|");
1945 if((fd = opensharecache(node)) < 0)
1947 qstrf(sk, "$Error %s|", strerror(errno));
1950 buf = getfspath(node);
1951 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1952 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1954 transfersetpath(peer->transfer, buf2);
1957 if(fstat(fd, &sb) < 0)
1960 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1961 qstr(sk, "$Error|");
1964 if(sb.st_size < 65536)
1965 peer->transfer->flags.b.minislot = 1;
1966 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1968 qstr(sk, "$MaxedOut|");
1971 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1974 qstr(sk, "$Error Offset out of range|");
1977 if((numbytes < 0) || (start + numbytes > sb.st_size))
1978 numbytes = sb.st_size - start;
1979 lesk = wrapsock(fd);
1980 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
1982 qstrf(sk, "$Sending %i|", numbytes);
1986 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1990 int start, numbytes;
1991 struct sharecache *node;
1993 struct socket *lesk;
1997 if(peer->transfer == NULL)
2002 if((argv = parseadc(args)) == NULL)
2007 if(parrlen(argv) < 4)
2012 start = atoi(argv[2]);
2013 numbytes = atoi(argv[3]);
2016 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2018 qstr(sk, "$Error Could not send file list|");
2020 } else if(fd >= 0) {
2021 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2022 transfersetpath(peer->transfer, wbuf);
2023 peer->transfer->flags.b.minislot = 1;
2027 if(!strncmp(argv[1], "TTH/", 4))
2029 if((node = findbytth(argv[1] + 4)) == NULL)
2031 qstr(sk, "$Error File not in cache|");
2035 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2037 qstr(sk, "$Error File not in cache|");
2041 if((fd = opensharecache(node)) < 0)
2043 qstrf(sk, "$Error %s|", strerror(errno));
2046 buf = getfspath(node);
2047 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2048 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2050 transfersetpath(peer->transfer, wbuf);
2053 if(!strcmp(argv[0], "file"))
2055 for(i = 4; argv[i] != NULL; i++)
2057 if(!strcmp(argv[i], "ZL1"))
2058 initcompress(peer, CPRS_ZLIB);
2060 if(fstat(fd, &sb) < 0)
2062 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2063 qstr(sk, "$Error|");
2066 if(sb.st_size < 65536)
2067 peer->transfer->flags.b.minislot = 1;
2068 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2069 qstr(sk, "$MaxedOut|");
2072 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2074 qstr(sk, "$Error Offset out of range|");
2077 if((numbytes < 0) || (start + numbytes > sb.st_size))
2078 numbytes = sb.st_size - start;
2079 lesk = wrapsock(fd);
2080 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2083 qstr(sk, "$ADCSND");
2084 sendadc(sk, "file");
2085 sendadc(sk, argv[1]);
2086 sendadcf(sk, "%i", start);
2087 sendadcf(sk, "%i", numbytes);
2088 if(peer->compress == CPRS_ZLIB)
2092 } else if(!strcmp(argv[0], "tthl")) {
2094 * XXX: Implement full TTHL support.
2096 * In the meantime, this is better than nothing, since it at
2097 * least allows fetching of the TTH root if it isn't already
2102 qstr(sk, "$Error no TTHL data for virtual files|");
2105 qstr(sk, "$ADCSND");
2106 sendadc(sk, "tthl");
2107 sendadc(sk, argv[1]);
2111 sockqueue(sk, node->hashtth, 24);
2113 qstr(sk, "$Error Namespace not implemented|");
2123 static void handletthl(struct dcpeer *peer)
2127 while(peer->inbufdata >= 24)
2129 pushtigertree(&peer->tth, peer->inbuf);
2130 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2131 peer->curread += 24;
2133 if(peer->curread >= peer->totalsize)
2135 if(peer->timeout == NULL)
2136 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2137 peer->state = PEER_CMD;
2138 synctigertree(&peer->tth);
2139 restigertree(&peer->tth, buf);
2140 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2145 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2148 int start, numbytes;
2150 if(peer->transfer == NULL)
2155 if((argv = parseadc(args)) == NULL)
2160 if(parrlen(argv) < 4)
2165 start = atoi(argv[2]);
2166 numbytes = atoi(argv[3]);
2167 if(!strcmp(argv[0], "tthl"))
2169 if((start != 0) || (numbytes % 24 != 0))
2171 /* Weird. Bail out. */
2175 if(peer->timeout != NULL)
2176 canceltimer(peer->timeout);
2177 peer->state = PEER_TTHL;
2178 peer->totalsize = numbytes;
2180 peer->fetchingtthl = 0;
2181 inittigertree(&peer->tth);
2183 } else if(!strcmp(argv[0], "file")) {
2184 if(start != peer->transfer->curpos)
2189 if(start + numbytes != peer->transfer->size)
2191 transfersetsize(peer->transfer, start + numbytes);
2196 if(peer->inbufdata > 0)
2198 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2199 peer->inbufdata = 0;
2200 transread(sk, peer);
2203 /* We certainly didn't request this...*/
2212 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2216 if(peer->transfer == NULL)
2221 numbytes = atoi(args);
2222 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2224 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2229 if(peer->inbufdata > 0)
2231 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2232 peer->inbufdata = 0;
2233 transread(sk, peer);
2239 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2244 hubhandleaction(sk, fn, cmd, args);
2248 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2254 static int hubreqconn(struct fnetpeer *peer)
2259 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2264 if((hub = peer->fn->data) == NULL)
2269 if((mbsnick = icwcstombs(peer->id, DCCHARSET)) == NULL)
2270 return(1); /* Shouldn't happen, of course, but who knows... */
2273 sendctm(peer->fn->sk, mbsnick);
2274 expectpeer(mbsnick, peer->fn);
2276 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2282 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2285 char *mbsstring, *mbsto;
2288 if((mbsto = icwcstombs(to, DCCHARSET)) == NULL)
2293 if((mbsstring = icwcstombs(string, DCCHARSET)) == NULL)
2298 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2305 if(strchr(mbsstring, '|') != NULL)
2316 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2318 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2321 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2328 static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2330 int minl, maxl, minr, maxr, retmin, retmax;
2335 findsizelimit(sexpr->l, &minl, &maxl);
2336 findsizelimit(sexpr->r, &minr, &maxr);
2337 retmin = (minl > minr)?minl:minr;
2338 if((maxl != -1) && (maxr != -1))
2339 retmax = (maxl < maxr)?maxl:maxr;
2348 findsizelimit(sexpr->l, &minl, &maxl);
2349 findsizelimit(sexpr->r, &minr, &maxr);
2350 retmin = (minl < minr)?minl:minr;
2351 if((maxl == -1) || (maxr == -1))
2354 retmax = (maxl > maxr)?maxl:maxr;
2357 findsizelimit(sexpr->l, &minl, &maxl);
2358 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2362 } else if((minl == 0) && (maxl != -1)) {
2365 } else if((minl != 0) && (maxl == -1)) {
2368 } else { /* This would yield two seperate intervals, which DC cannot handle */
2374 retmax = sexpr->d.n - 1;
2377 retmin = sexpr->d.n;
2378 retmax = sexpr->d.n;
2381 retmin = sexpr->d.n + 1;
2395 static struct hash *findsehash(struct sexpr *sexpr)
2397 struct hash *h1, *h2;
2402 if((h1 = findsehash(sexpr->l)) != NULL)
2404 if((h1 = findsehash(sexpr->r)) != NULL)
2408 h1 = findsehash(sexpr->l);
2409 h2 = findsehash(sexpr->r);
2414 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2415 return(sexpr->d.hash);
2422 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2425 struct wcslist *list, *cur;
2426 char *sstr, *buf, *p;
2427 size_t sstrsize, sstrdata;
2428 struct sockaddr *name;
2430 int minsize, maxsize;
2434 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2436 list = findsexprstrs(srch->sexpr);
2437 findsizelimit(srch->sexpr, &minsize, &maxsize);
2438 hash = findsehash(srch->sexpr);
2439 if((minsize != 0) && (maxsize != -1))
2441 /* Choose either minsize or maxsize by trying to determine
2442 * which choice will be most restrictive. The result can be
2443 * approximative at best anyway, so don't try too hard... */
2444 if((50000000 - maxsize) > (minsize - 50000000))
2450 sstrsize = sstrdata = 0;
2451 if((hash != NULL) && (hash->len == 24))
2453 /* Prioritize hash searches above all else */
2454 bufcat(sstr, "F?T?0?9?TTH:", 12);
2455 buf = base32encode(hash->buf, hash->len);
2457 bufcat(sstr, buf, 39);
2462 sizebuf2(sstr, sstrdata + 32, 1);
2463 snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
2464 } else if(maxsize != -1) {
2465 sizebuf2(sstr, sstrdata + 32, 1);
2466 snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
2468 bufcat(sstr, "F?F?0?1?", 8);
2472 for(cur = list; cur != NULL; cur = cur->next)
2474 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2476 /* Can't find anything anyway if the search expression
2477 * requires characters outside DC's charset. There's
2478 * nothing technically wrong with the search itself,
2479 * however, so return success. This should be
2480 * considered as an optimization. */
2487 addtobuf(sstr, '$');
2489 * It probably doesn't hurt if buf contains any extra
2490 * dollar signs - it will just result in extra search
2491 * terms, and the extraneous results will be filtered by
2492 * the search layer anyway. It hurts if it contains any
2493 * pipes, though, so let's sell them for money.
2495 for(p = buf; *p; p++)
2500 bufcat(sstr, buf, strlen(buf));
2504 /* Will match all files... :-/ */
2505 addtobuf(sstr, '.');
2511 if(sockgetremotename(udpsock, &name, &namelen) < 0)
2513 flog(LOG_WARNING, "cannot get address of UDP socket");
2515 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2519 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2523 fn->lastsrch = time(NULL);
2531 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2532 struct command hubcmds[] =
2534 {"$Lock", cc(cmd_lock)},
2535 {"$HubName", cc(cmd_hubname)},
2536 {"$Hello", cc(cmd_hello)},
2537 {"$Quit", cc(cmd_quit)},
2538 {"$NickList", cc(cmd_nicklist)},
2539 {"$OpList", cc(cmd_oplist)},
2540 {"$MyINFO", cc(cmd_myinfo)},
2541 {"$ForceMove", cc(cmd_forcemove)},
2542 {"$Search", cc(cmd_search)},
2543 {"$MultiSearch", cc(cmd_search)},
2544 {"$ConnectToMe", cc(cmd_connecttome)},
2545 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2546 {"$GetNetInfo", cc(cmd_getnetinfo)},
2547 {"$To:", cc(cmd_to)},
2548 {"$SR", cc(cmd_sr)},
2549 {"$UserCommand", cc(cmd_usercommand)},
2550 {"$GetPass", cc(cmd_getpass)},
2551 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2555 struct command peercmds[] =
2557 {"$MyNick", cc(cmd_mynick)},
2558 {"$Lock", cc(cmd_peerlock)},
2559 {"$Direction", cc(cmd_direction)},
2560 {"$Key", cc(cmd_key)},
2561 {"$FileLength", cc(cmd_filelength)},
2562 {"$Error", cc(cmd_error)},
2563 {"$MaxedOut", cc(cmd_maxedout)},
2564 {"$Get", cc(cmd_get)},
2565 {"$Send", cc(cmd_send)},
2566 {"$Supports", cc(cmd_supports)},
2567 {"$GetBlock", cc(cmd_getblock)},
2568 {"$UGetBlock", cc(cmd_getblock)},
2569 {"$GetZBlock", cc(cmd_getblock)},
2570 {"$UGetZBlock", cc(cmd_getblock)},
2571 {"$ADCGET", cc(cmd_adcget)},
2572 {"$ADCSND", cc(cmd_adcsnd), 1},
2573 {"$Sending", cc(cmd_sending), 1},
2578 static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2580 CBUNREG(transfer, trans_filterout, peer);
2583 peer->transfer = NULL;
2587 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2595 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2597 if(sockqueuesize(peer->sk) < 65536)
2599 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2601 if(peer->compress == CPRS_NONE)
2603 sockqueue(peer->sk, buf, bufsize);
2604 } else if(peer->compress == CPRS_ZLIB) {
2605 cstr = peer->cprsdata;
2606 cstr->next_in = buf;
2607 cstr->avail_in = bufsize;
2608 while(cstr->avail_in > 0)
2610 cstr->next_out = outbuf;
2611 cstr->avail_out = sizeof(outbuf);
2612 if((ret = deflate(cstr, 0)) != Z_OK)
2614 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2618 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2623 if(peer->state == PEER_SYNC)
2625 if(peer->compress == CPRS_ZLIB)
2627 cstr = peer->cprsdata;
2628 cstr->next_in = NULL;
2632 cstr->next_out = outbuf;
2633 cstr->avail_out = sizeof(outbuf);
2634 ret = deflate(cstr, Z_FINISH);
2635 if((ret != Z_OK) && (ret != Z_STREAM_END))
2637 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2641 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2642 } while(ret != Z_STREAM_END);
2648 if(peer->timeout == NULL)
2649 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2650 peer->state = PEER_CMD;
2652 transfersetstate(transfer, TRNS_HS);
2653 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2654 peer->sk->writecb = NULL;
2661 static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2663 peer->state = PEER_SYNC;
2664 dctransgotdata(transfer, peer);
2667 static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2669 if(transferdatasize(transfer) < 65536)
2670 peer->sk->ignread = 0;
2673 static void transread(struct socket *sk, struct dcpeer *peer)
2677 struct transfer *transfer;
2679 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2681 if(peer->transfer == NULL)
2687 transferputdata(peer->transfer, buf, bufsize);
2689 if(peer->transfer->curpos >= peer->transfer->size)
2691 transfer = peer->transfer;
2692 transferdetach(transfer);
2693 transferendofdata(transfer);
2696 if(transferdatasize(peer->transfer) > 65535)
2700 static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2702 struct transfer *transfer;
2704 if((transfer = peer->transfer) == NULL)
2709 transferdetach(transfer);
2710 transferendofdata(transfer);
2713 static void transwrite(struct socket *sk, struct dcpeer *peer)
2715 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2717 if(peer->transfer == NULL)
2722 dctransgotdata(peer->transfer, peer);
2725 static void udpread(struct socket *sk, void *data)
2727 char *buf, *p, *p2, *hashbuf;
2728 size_t buflen, hashlen;
2729 char *nick, *filename, *hubname;
2731 struct fnetnode *fn, *myfn;
2734 wchar_t *wnick, *wfile;
2737 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2739 buf = srealloc(buf, buflen + 1);
2741 if(!strncmp(buf, "$SR ", 4))
2745 if((p2 = strchr(p, ' ')) == NULL)
2753 if((p2 = strchr(p, 5)) == NULL)
2760 if((p2 = strchr(p, ' ')) == NULL)
2768 if((p2 = strchr(p, '/')) == NULL)
2776 if((p2 = strchr(p, 5)) == NULL)
2783 if((p2 = strstr(p, " (")) == NULL)
2789 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
2794 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2802 if(!strncmp(hubname, "TTH:", 4))
2804 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2807 hash = newhash(L"TTH", 24, hashbuf);
2811 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2813 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2815 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2828 sr = newsrchres(&dcnet, wfile, wnick);
2829 if(sr->peernick != NULL)
2831 sr->peernick = swcsdup(wnick);
2837 getfnetnode(sr->fn = myfn);
2846 static void hubread(struct socket *sk, struct fnetnode *fn)
2853 hub = (struct dchub *)fn->data;
2854 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2856 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2858 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2859 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2861 p = hub->inbuf + hub->inbufdata;
2862 hub->inbufdata += datalen;
2863 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2866 newqcmd(&hub->queue, hub->inbuf);
2867 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2868 datalen = hub->inbufdata;
2873 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2878 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2884 if((buf = icwcstombs(newnick, DCCHARSET)) == NULL)
2886 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2891 if(hub == NULL) /* Not yet connected */
2896 if(hub->nativenick != NULL)
2897 free(hub->nativenick);
2898 hub->nativenick = buf;
2902 static struct dchub *newdchub(struct fnetnode *fn)
2906 new = smalloc(sizeof(*new));
2907 memset(new, 0, sizeof(*new));
2909 if(hubsetnick(fn, fn->mynick))
2910 fnetsetnick(fn, L"DoldaConnectUser-IN");
2911 /* IN as in Invalid Nick */
2915 static struct dcpeer *newdcpeer(struct socket *sk)
2919 new = smalloc(sizeof(*new));
2920 memset(new, 0, sizeof(*new));
2921 new->transfer = NULL;
2933 static void freedcpeer(struct dcpeer *peer)
2936 struct qcommand *qcmd;
2941 if(peer->next != NULL)
2942 peer->next->prev = peer->prev;
2943 if(peer->prev != NULL)
2944 peer->prev->next = peer->next;
2945 if(peer->transfer != NULL)
2947 if(peer->transfer->dir == TRNSD_UP)
2948 peer->transfer->close = 1;
2949 if(peer->transfer->dir == TRNSD_DOWN)
2950 resettransfer(peer->transfer);
2951 transferdetach(peer->transfer);
2953 if(peer->timeout != NULL)
2954 canceltimer(peer->timeout);
2955 if(peer->sk->data == peer)
2956 peer->sk->data = NULL;
2957 peer->sk->readcb = NULL;
2958 peer->sk->writecb = NULL;
2959 peer->sk->errcb = NULL;
2962 if(peer->supports != NULL)
2964 for(i = 0; peer->supports[i] != NULL; i++)
2965 free(peer->supports[i]);
2966 free(peer->supports);
2968 if(peer->inbuf != NULL)
2970 if(peer->key != NULL)
2972 if(peer->wcsname != NULL)
2973 free(peer->wcsname);
2974 if(peer->nativename != NULL)
2975 free(peer->nativename);
2976 if(peer->fn != NULL)
2977 putfnetnode(peer->fn);
2978 while((qcmd = ulqcmd(&peer->queue)) != NULL)
2984 static void hubconnect(struct fnetnode *fn)
2986 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
2987 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
2989 fn->data = newdchub(fn);
2994 static void hubdestroy(struct fnetnode *fn)
2997 struct qcommand *qcmd;
2999 hub = (struct dchub *)fn->data;
3002 if(fn->sk->data == fn)
3004 fn->sk->data = NULL;
3010 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3012 if(hub->nativename != NULL)
3013 free(hub->nativename);
3014 if(hub->nativenick != NULL)
3015 free(hub->nativenick);
3016 if(hub->inbuf != NULL)
3021 static wchar_t *dcbasename(wchar_t *filename)
3025 if((ret = wcsrchr(filename, L'\\')) != NULL)
3030 static struct transferiface dctransfer =
3032 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3033 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3034 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3035 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3038 static struct fnet dcnet =
3041 .connect = hubconnect,
3042 .destroy = hubdestroy,
3043 .setnick = hubsetnick,
3044 .reqconn = hubreqconn,
3045 .sendchat = hubsendchat,
3046 .search = hubsearch,
3047 .filebasename = dcbasename
3050 static void peerread(struct socket *sk, struct dcpeer *peer)
3054 struct command *cmd;
3056 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3058 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3059 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3061 peer->inbufdata += datalen;
3062 if(peer->state == PEER_CMD)
3065 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3068 newqcmd(&peer->queue, peer->inbuf);
3069 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3071 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3074 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3077 peer->state = PEER_STOP;
3081 } else if(peer->state == PEER_TTHL) {
3086 static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3091 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3093 struct dcpeer *peer;
3100 peer = newdcpeer(sk);
3103 sk->readcb = (void (*)(struct socket *, void *))peerread;
3104 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3106 socksettos(sk, confgetint("fnet", "fnptos"));
3108 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3113 static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3115 struct dcpeer *peer;
3117 peer = newdcpeer(newsk);
3119 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3120 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3122 socksettos(newsk, confgetint("fnet", "fnptos"));
3123 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3126 static void updatehmlist(void)
3128 int i, lev, ic, ret;
3129 struct sharecache *node;
3130 char *buf, *buf2, numbuf[32];
3131 size_t bufsize, bufdata;
3135 buf = smalloc(bufsize = 65536);
3136 node = shareroot->child;
3141 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3143 for(i = 0; i < lev; i++)
3145 bufcat(buf, buf2, strlen(buf2));
3147 if(node->f.b.type == FILE_REG)
3150 sprintf(numbuf, "%i", node->size);
3151 bufcat(buf, numbuf, strlen(numbuf));
3158 if((node->child != NULL) && !ic)
3162 } else if(node->next != NULL) {
3165 while(node->next == NULL)
3168 node = node->parent;
3169 if(node == shareroot)
3172 if(node == shareroot)
3177 if(hmlistname != NULL)
3182 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3183 if((fd = mkstemp(hmlistname)) < 0)
3185 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3190 * I do not want to implement a good Huffman encoder, and it's not
3191 * like Huffman encoding actually yields any impressive results
3192 * for DC file lists anyway, so I'll just output a bogus
3193 * tree. Implement a good encoder if you want to.
3195 write(fd, "HE3\r\0", 5);
3196 write(fd, &bufdata, 4);
3198 write(fd, &ibuf, 2);
3200 for(i = 0; i < 256; i++)
3203 write(fd, &ibuf, 1);
3205 for(i = 0; i < 256; i++)
3207 for(buf2 = buf; bufdata > 0;)
3209 if((ret = write(fd, buf2, bufdata)) < 0)
3211 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3222 static struct xmlent
3229 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3233 static wchar_t *escapexml(wchar_t *src)
3235 static wchar_t *buf = NULL;;
3238 size_t bufsize, bufdata;
3244 bufsize = bufdata = 0;
3245 for(; *src != L'\0'; src++)
3248 if((c > 0) && (c < 32))
3250 bufcat(buf, L"&#", 2);
3251 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3252 bufcat(buf, nbuf, ret);
3253 addtobuf(buf, L';');
3255 for(ent = entities; ent->ent != NULL; ent++)
3259 bufcat(buf, ent->ent, wcslen(ent->ent));
3263 if(ent->ent == NULL)
3264 addtobuf(buf, *src);
3267 addtobuf(buf, L'\0');
3271 static void updatexmllist(void)
3275 char cidbuf[14], *namebuf;
3277 struct sharecache *node;
3279 if(xmllistname != NULL)
3281 unlink(xmllistname);
3284 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3285 if((fd = mkstemp(xmllistname)) < 0)
3287 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3292 if((fs = fdopen(fd, "w")) == NULL)
3294 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3295 unlink(xmllistname);
3301 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3302 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3303 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3305 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, DCIDFULL);
3307 node = shareroot->child;
3311 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3313 for(i = 0; i < lev; i++)
3315 if(node->child != NULL)
3317 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3322 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3323 if(node->f.b.hastth)
3325 hashbuf = base32encode(node->hashtth, 24);
3326 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3329 fprintf(fs, "/>\r\n");
3331 while(node->next == NULL)
3333 node = node->parent;
3334 if(node == shareroot)
3339 for(i = 0; i < lev; i++)
3341 fprintf(fs, "</Directory>\r\n");
3344 if(node == shareroot)
3350 #ifdef DCPP_MASQUERADE
3351 fprintf(fs, "</FileListing>");
3353 fprintf(fs, "</FileListing>\r\n");
3358 static void updatexmlbz2list(void)
3367 if(xmllistname == NULL)
3369 if((in = fopen(xmllistname, "r")) == NULL)
3371 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3374 if(xmlbz2listname != NULL)
3376 unlink(xmlbz2listname);
3377 free(xmlbz2listname);
3379 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3380 if((fd = mkstemp(xmlbz2listname)) < 0)
3382 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3383 free(xmlbz2listname);
3384 xmlbz2listname = NULL;
3388 if((real = fdopen(fd, "w")) == NULL)
3390 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3392 unlink(xmlbz2listname);
3393 free(xmlbz2listname);
3394 xmlbz2listname = NULL;
3398 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3401 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3403 unlink(xmlbz2listname);
3404 free(xmlbz2listname);
3405 xmlbz2listname = NULL;
3411 bufdata = fread(buf, 1, sizeof(buf), in);
3412 BZ2_bzWrite(&err, out, buf, bufdata);
3415 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3419 static int shareupdate(unsigned long long uusharesize, void *data)
3427 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3430 struct command *cmd;
3432 if((p = strchr(qcmd->string, ' ')) != NULL)
3434 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3436 if(!strcmp(cmd->name, qcmd->string))
3439 if(cmd->handler != NULL)
3440 cmd->handler(sk, data, qcmd->string, p);
3443 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3447 static int run(void)
3449 struct fnetnode *fn, *nextfn;
3451 struct dcpeer *peer, *nextpeer;
3452 struct qcommand *qcmd;
3456 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3459 if(fn->fnet != &dcnet)
3461 if(fn->data == NULL)
3463 hub = (struct dchub *)fn->data;
3464 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3466 if(*qcmd->string == '$')
3468 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3469 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3470 } else if(*qcmd->string != 0) {
3471 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3478 for(peer = peers; peer != NULL; peer = nextpeer)
3480 nextpeer = peer->next;
3481 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3483 if(peer->timeout != NULL)
3484 canceltimer(peer->timeout);
3485 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3486 if(*qcmd->string == '$')
3487 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3496 static void preinit(int hup)
3503 static int updateudpport(struct configvar *var, void *uudata)
3505 struct sockaddr_in addr;
3506 struct socket *newsock;
3508 memset(&addr, 0, sizeof(addr));
3509 addr.sin_family = AF_INET;
3510 addr.sin_port = htons(var->val.num);
3511 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3513 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3516 newsock->readcb = udpread;
3523 static int updatetcpport(struct configvar *var, void *uudata)
3525 struct sockaddr_in addr;
3526 struct socket *newsock;
3528 memset(&addr, 0, sizeof(addr));
3529 addr.sin_family = AF_INET;
3530 addr.sin_port = htons(var->val.num);
3531 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3532 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3539 static int init(int hup)
3541 struct sockaddr_in addr;
3545 GCBREG(sharechangecb, shareupdate, NULL);
3550 addr.sin_family = AF_INET;
3551 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3552 addr.sin_port = htons(confgetint("dc", "udpport"));
3553 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3555 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3558 udpsock->readcb = udpread;
3559 addr.sin_port = htons(confgetint("dc", "tcpport"));
3560 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3561 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3562 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3563 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3564 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3569 static void terminate(void)
3571 if(hmlistname != NULL)
3576 if(xmllistname != NULL)
3578 unlink(xmllistname);
3581 if(xmlbz2listname != NULL)
3583 unlink(xmlbz2listname);
3584 free(xmlbz2listname);
3588 static struct configvar myvars[] =
3590 {CONF_VAR_STRING, "desc", {.str = L""}},
3591 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3592 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3593 {CONF_VAR_INT, "udpport", {.num = 0}},
3594 {CONF_VAR_INT, "tcpport", {.num = 0}},
3598 static struct module me =
3607 .terminate = terminate,