2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <netinet/in.h>
26 #include <arpa/inet.h>
43 #include "sysevents.h"
48 * The Direct Connect protocol is extremely ugly. Thus, this code must
49 * also be a bit ugly in certain places. Please forgive me. =/
51 * This also means that there might be some pieces of the code that
52 * look completely illogical to you, and you think that you may make
53 * them much neater/better. However, in many cases it might just be
54 * that it's required to cope with some oddity of the protocol, such
55 * as the amazingly ugly delayed key response in the peer protocol.
58 /* I assume this is the correct character set to use for DC,
59 * considering it was developed without i18n support under Windows */
60 #define DCCHARSET "windows-1252"
62 #ifdef DCPP_MASQUERADE
64 * I honestly don't want to pretend being a client that I'm not, but
65 * there are so many hubs that simply do not accept any clients
66 * outside their whitelists, for no obvious reasons, so I feel that I
67 * am left with little choice. Anyhow, as long as I actually support
68 * all the features that my faked DC++ version does, there should be
69 * very little harm done.
72 #define DCIDTAGV "0.674"
73 #define DCIDFULL "DC++ 0.674"
75 #define DCIDTAG "Dolda"
76 #define DCIDTAGV VERSION
77 #define DCIDFULL "DoldaConnect " VERSION
92 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
99 struct qcommand *next;
105 struct qcommand *f, *l;
113 size_t inbufdata, inbufsize;
114 struct qcmdqueue queue;
115 int extended, dcppemu;
124 struct dcexppeer *next, *prev;
127 struct timer *expire;
132 struct dcpeer *next, *prev;
136 size_t inbufdata, inbufsize;
137 off_t curread, totalsize;
139 struct timer *timeout;
140 struct qcmdqueue queue;
141 struct transfer *transfer;
143 int ptclose; /* Close after transfer is complete */
144 int accepted; /* If false, we connected, otherwise, we accepted */
145 int extended, dcppemu;
146 int direction; /* Using the constants from transfer.h */
148 int hascurpos, fetchingtthl, notthl;
149 struct tigertreehash tth;
158 static struct fnet dcnet;
159 static struct transferiface dctransfer;
160 static struct socket *udpsock = NULL;
161 static struct socket *tcpsock = NULL;
162 static struct dcpeer *peers = NULL;
164 static struct dcexppeer *expected = NULL;
165 static char *hmlistname = NULL;
166 static char *xmllistname = NULL;
167 static char *xmlbz2listname = NULL;
168 static struct timer *listwritetimer = NULL;
170 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
171 static void freedcpeer(struct dcpeer *peer);
172 static void transread(struct socket *sk, struct dcpeer *peer);
173 static void transerr(struct socket *sk, int err, struct dcpeer *peer);
174 static void transwrite(struct socket *sk, struct dcpeer *peer);
175 static void updatehmlist(void);
176 static void updatexmllist(void);
177 static void updatexmlbz2list(void);
178 static void requestfile(struct dcpeer *peer);
179 static void updatelists(int now);
181 static int reservedchar(unsigned char c)
183 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
186 /* Oh, how I despise having to do this... */
187 static char *dcmakekey(char *lock)
193 buf = smalloc(strlen(lock));
196 for(i = 0; lock[i]; i++)
198 buf[i] = lock[i] ^ save;
199 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
201 if((i != 0) && reservedchar(buf[i]))
206 buf[0] ^= buf[i - 1];
207 if(reservedchar(buf[0]))
211 key = smalloc(len + 1);
213 for(i = 0; lock[i] != 0; i++)
215 if(reservedchar(buf[i]))
216 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
218 key[offset++] = buf[i];
225 static char *pathnmdc2adc(char *path)
228 size_t retsize, retdata;
230 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
231 return(sstrdup(path));
233 retsize = retdata = 0;
240 addtobuf(ret, *path);
246 static int isdchash(struct hash *hash)
248 if(wcscmp(hash->algo, L"TTH"))
256 * Uncomment when used!
258 static int hubsupports(struct dchub *hub, char *cap)
262 if(hub->supports == NULL)
264 for(p = hub->supports; *p != NULL; p++)
266 if(!strcasecmp(*p, cap))
273 static int supports(struct dcpeer *peer, char *cap)
277 if(peer->supports == NULL)
279 for(p = peer->supports; *p != NULL; p++)
281 if(!strcasecmp(*p, cap))
287 static void endcompress(struct dcpeer *peer)
289 if(peer->compress == CPRS_ZLIB)
291 deflateEnd(peer->cprsdata);
292 free(peer->cprsdata);
294 peer->compress = CPRS_NONE;
297 static void initcompress(struct dcpeer *peer, int algo)
302 peer->compress = algo;
303 if(algo == CPRS_ZLIB)
305 peer->cprsdata = smalloc(sizeof(z_stream));
306 memset(peer->cprsdata, 0, sizeof(z_stream));
307 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
309 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
315 static void unquote(wchar_t *in)
319 for(p = in; *p != L'\0'; p++)
323 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
330 if(!wcscmp(p + 1, L"amp"))
333 } else if(p[1] == L'#') {
334 nc = ucptowc(wcstol(p + 2, NULL, 10));
343 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
348 static void freeexppeer(struct dcexppeer *ep)
351 ep->next->prev = ep->prev;
353 ep->prev->next = ep->next;
358 if(ep->expire != NULL)
359 canceltimer(ep->expire);
363 static void exppeerexpire(int cancelled, struct dcexppeer *ep)
370 static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
372 struct dcexppeer *ep;
374 ep = smalloc(sizeof(*ep));
375 ep->nick = sstrdup(nick);
376 getfnetnode(ep->fn = fn);
377 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
386 static struct qcommand *newqcmd(struct qcmdqueue *queue, char *string)
388 struct qcommand *new;
390 new = smalloc(sizeof(*new));
391 new->string = sstrdup(string);
396 queue->l->next = new;
402 static struct qcommand *ulqcmd(struct qcmdqueue *queue)
404 struct qcommand *qcmd;
406 if((qcmd = queue->f) == NULL)
408 if((queue->f = qcmd->next) == NULL)
414 static void freeqcmd(struct qcommand *qcmd)
420 static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
422 wchar_t *chat, *wfrom, *wpeer;
424 struct fnetpeer *peer;
428 end = string + strlen(string);
429 while((p = strchr(string, 13)) != NULL)
430 memmove(p, p + 1, (end-- - p));
433 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
434 string += strlen(from) + 2;
435 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
437 wpeer = swcsdup(wfrom);
443 for(p = string + 1; *p; p++)
445 if((*p == ' ') || (*p == '>'))
453 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
459 wpeer = swcsdup(L"");
461 if((chat = icmbstowcs(string, hub->charset)) == NULL)
471 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
472 fnethandlechat(fn, 1, wfrom, wpeer, chat);
474 fnethandlechat(fn, 0, wfrom, wpeer, chat);
476 fnethandlechat(fn, 1, L"", wpeer, chat);
484 static void peertimeout(int cancelled, struct dcpeer *peer)
486 peer->timeout = NULL;
492 static void sendadc(struct socket *sk, char *arg)
495 size_t bufsize, bufdata;
498 bufsize = bufdata = 0;
504 bufcat(buf, "\\s", 2);
505 } else if(*arg == '\n') {
506 bufcat(buf, "\\n", 2);
507 } else if(*arg == '\\') {
508 bufcat(buf, "\\\\", 2);
513 sockqueue(sk, buf, bufdata);
517 #if defined(__GNUC__)
518 static void __attribute__ ((format (printf, 2, 3))) sendadcf(struct socket *sk, char *arg, ...)
520 static void sendadcf(struct socket *sk, char *arg, ...)
527 buf = vsprintf2(arg, args);
535 static char **parseadc(char *args)
538 size_t retbufsize, retbufdata;
540 size_t bufsize, bufdata;
545 retbufsize = retbufdata = bufsize = bufdata = 0;
554 else if(*args != ' ')
558 if((*args == ' ') || (*args == 0))
561 addtobuf(retbuf, buf);
563 bufsize = bufdata = 0;
566 } else if(*args == '\\') {
569 addtobuf(buf, *args);
578 addtobuf(retbuf, NULL);
581 } else if((*args == 's') || (*args == ' ')) {
583 } else if(*args == 'n') {
585 } else if(*args == '\\') {
595 addtobuf(retbuf, NULL);
599 /* Macros useful in command handlers */
600 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
601 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
602 #define qstrf(sk, strandargs...) \
605 if((__buf__ = sprintf2(strandargs)) != NULL) { \
606 sockqueue(sk, __buf__, strlen(__buf__)); \
611 static char *tr(char *str, char *trans)
615 for(; *trans; trans += 2)
617 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
623 static char *getadcid(struct dcpeer *peer)
630 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
632 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
634 buf = base32encode(peer->transfer->hash->buf, 24);
635 ret = sprintf2("TTH/%.39s", buf);
638 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
640 ret = pathnmdc2adc(buf);
647 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
649 if(!wcscmp(cmd, L"resume"))
653 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
656 transfer->curpos = wcstoll(arg, NULL, 10);
665 static void sendmynick(struct dcpeer *peer)
671 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
673 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
676 static void sendpeerlock(struct dcpeer *peer)
679 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
681 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
684 static void sendsupports(struct dcpeer *peer)
687 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
689 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF");
690 if(!confgetint("dc", "hidedeflate"))
691 qstr(peer->sk, " GetZBlock ZLIG");
696 static void requestfile(struct dcpeer *peer)
700 if(peer->transfer->size == -1)
702 /* Use DCCHARSET for $Get paths until further researched... */
703 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
705 transferseterror(peer->transfer, TRNSE_NOTFOUND);
709 /* The transfer will be restarted later from
710 * cmd_filelength when it detects that the sizes
712 qstrf(peer->sk, "$Get %s$1|", buf);
715 if((peer->transfer->hash == NULL) && !peer->notthl)
717 if(supports(peer, "adcget") && supports(peer, "tthl"))
719 qstr(peer->sk, "$ADCGET");
720 sendadc(peer->sk, "tthl");
721 if((buf = getadcid(peer)) == NULL)
723 transferseterror(peer->transfer, TRNSE_NOTFOUND);
727 sendadc(peer->sk, buf);
729 sendadc(peer->sk, "0");
730 sendadc(peer->sk, "-1");
732 peer->fetchingtthl = 1;
738 if(forkfilter(peer->transfer))
740 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
744 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
747 if(supports(peer, "adcget"))
749 qstr(peer->sk, "$ADCGET");
750 sendadc(peer->sk, "file");
751 if((buf = getadcid(peer)) == NULL)
753 transferseterror(peer->transfer, TRNSE_NOTFOUND);
757 sendadc(peer->sk, buf);
759 sendadcf(peer->sk, "%ji", (intmax_t)peer->transfer->curpos);
760 sendadcf(peer->sk, "%ji", (intmax_t)(peer->transfer->size - peer->transfer->curpos));
762 } else if(supports(peer, "xmlbzlist")) {
763 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
765 transferseterror(peer->transfer, TRNSE_NOTFOUND);
769 qstrf(peer->sk, "$UGetBlock %ji %ji %s|", (intmax_t)peer->transfer->curpos, (intmax_t)(peer->transfer->size - peer->transfer->curpos), buf);
771 /* Use DCCHARSET for $Get paths until further researched... */
772 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
774 transferseterror(peer->transfer, TRNSE_NOTFOUND);
778 qstrf(peer->sk, "$Get %s$%ji|", buf, (intmax_t)peer->transfer->curpos + 1);
782 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
786 struct fnetnode *cfn;
790 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
791 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
792 qstrf(sk, "%s", buf);
794 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
796 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
798 if(cfn->regstatus == FNNS_OP)
800 else if(cfn->regstatus == FNNS_REG)
806 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
807 (hub->dcppemu)?"++":"Dolda",
808 (hub->dcppemu)?"0.674":VERSION,
809 (tcpsock == NULL)?'P':'A',
811 confgetint("transfer", "slots")
814 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
815 qstrf(sk, "%s\x01$", buf);
816 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
817 qstrf(sk, "%s$", buf);
818 qstrf(sk, "%llu$|", sharesize);
821 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
826 if(!strcmp(cmd, "$Lock"))
828 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
829 } else if(!strcmp(cmd, "$Hello")) {
830 if(fn->state == FNN_HS)
832 qstrf(sk, "$Version 1,0091|");
833 qstrf(sk, "$GetNickList|");
835 fnetsetstate(fn, FNN_EST);
837 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
842 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
849 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
851 if((p = strchr(args, ' ')) != NULL)
856 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
858 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch");
859 if(!confgetint("dc", "hidedeflate"))
860 qstr(sk, " GetZBlock");
864 key = dcmakekey(args);
865 qstrf(sk, "$Key %s|", key);
867 hubhandleaction(sk, fn, cmd, args);
870 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
876 if(hub->nativename == NULL)
877 free(hub->nativename);
878 hub->nativename = sstrdup(args);
879 buf = icmbstowcs(args, hub->charset);
880 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
883 hubhandleaction(sk, fn, cmd, args);
886 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
892 if((nick = icmbstowcs(args, hub->charset)) == NULL)
894 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
895 fnetaddpeer(fn, nick, nick);
897 hubhandleaction(sk, fn, cmd, args);
900 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
903 struct fnetpeer *peer;
907 if((nick = icmbstowcs(args, hub->charset)) == NULL)
909 if((peer = fnetfindpeer(fn, nick)) != NULL)
912 hubhandleaction(sk, fn, cmd, args);
915 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
920 struct fnetpeer *peer;
923 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
924 peer->flags.b.delete = 1;
925 while((p = strstr(args, "$$")) != NULL)
928 if((buf = icmbstowcs(args, hub->charset)) != NULL)
930 if((peer = fnetfindpeer(fn, buf)) == NULL)
931 peer = fnetaddpeer(fn, buf, buf);
933 peer->flags.b.delete = 0;
935 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
940 hubhandleaction(sk, fn, cmd, args);
943 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
948 struct fnetpeer *peer;
951 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
952 peer->flags.b.op = 0;
953 while((p = strstr(args, "$$")) != NULL)
956 if((buf = icmbstowcs(args, hub->charset)) != NULL)
958 if((peer = fnetfindpeer(fn, buf)) != NULL)
959 peer->flags.b.op = 1;
964 hubhandleaction(sk, fn, cmd, args);
967 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
970 wchar_t *buf, *wp, *wp2;
972 struct fnetpeer *peer;
977 if(strncmp(p, "$ALL ", 5))
980 if((p2 = strchr(p, ' ')) == NULL)
983 if((buf = icmbstowcs(p, hub->charset)) == NULL)
985 if((peer = fnetfindpeer(fn, buf)) == NULL)
986 peer = fnetaddpeer(fn, buf, buf);
989 if((p2 = strstr(p, "$ $")) == NULL)
992 if((buf = icmbstowcs(p, hub->charset)) == NULL)
994 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
996 buf[wcslen(buf) - 1] = L'\0';
998 if((wp2 = wcschr(wp, L' ')) != NULL)
1001 fnetpeersetstr(peer, L"dc-client", wp);
1005 if((wp2 = wcschr(wp, L',')) != NULL)
1009 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
1010 fnetpeersetstr(peer, abuf, wp + 2);
1012 } while(wp2 != NULL);
1015 fnetpeersetstr(peer, L"descr", buf);
1018 if((p2 = strchr(p, '$')) == NULL)
1021 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1023 fnetpeersetstr(peer, L"dc-speed", buf);
1026 if((p2 = strchr(p, '$')) == NULL)
1029 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1031 fnetpeersetstr(peer, L"email", buf);
1036 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1037 hubhandleaction(sk, fn, cmd, args);
1040 /* I do not implement the fully in that I do not disconnect from the
1041 * old hub. I do this since I believe that if the hub owner really
1042 * wants to get rid of us, then it is his responsibility to disconnect
1044 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1047 struct fnetnode *newfn;
1051 if(strchr(args, ':') == NULL)
1053 args = strcpy(smalloc(strlen(args) + 5), args);
1054 strcat(args, ":411");
1059 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
1061 linkfnetnode(newfn);
1064 hubhandleaction(sk, fn, cmd, args);
1069 static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
1074 if(node->parent == NULL)
1076 if(node->parent == shareroot)
1078 if((buf = icwcstombs(node->name, charset)) == NULL)
1081 *retlen = strlen(buf);
1084 if((buf2 = icwcstombs(node->name, charset)) == NULL)
1086 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
1091 len2 = strlen(buf2);
1092 buf = srealloc(buf, len + 1 + len2 + 1);
1094 strcpy(buf + len, buf2);
1095 buf[len + len2] = 0;
1098 *retlen = len + len2;
1104 * This is the main share searching function for Direct Connect
1105 * peers. Feel free to optimize it if you feel the need for it. I
1106 * haven't ever seen it take any noticable CPU time anyway, so I
1107 * haven't felt that need.
1109 * It may feel dubious to just return the directory when all terms are
1110 * satisfied rather than all the files in it, but it really benefits
1111 * everyone: Less cycles used for us, less UDP squelching for active
1112 * searchers, and less bandwidth waste for hubs when serving passive
1115 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1120 char *prefix, *infix, *postfix, *buf, *buf2;
1122 struct sockaddr_in addr;
1123 struct sharecache *node;
1124 int minsize, maxsize;
1127 int termnum, satisfied, skipcheck;
1128 int level, tersat[32];
1133 if((p = strchr(args, ' ')) == NULL)
1137 memset(terms, 0, sizeof(terms));
1138 prefix = infix = postfix = NULL;
1142 if(!strncmp(args, "Hub:", 4))
1144 if(!strcmp(cmd, "$MultiSearch"))
1146 if(!strcmp(args + 4, hub->nativenick))
1148 prefix = sprintf2("$SR %s ", hub->nativenick);
1149 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1150 postfix = sprintf2(" (%s)\005%s|", formataddress(hub->sk->remote, hub->sk->remotelen), args + 4);
1154 if((p2 = strchr(args, ':')) == NULL)
1157 addr.sin_family = AF_INET;
1158 if(!inet_aton(args, &addr.sin_addr))
1160 addr.sin_port = htons(atoi(p2));
1161 prefix = sprintf2("$SR %s ", hub->nativenick);
1162 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1163 postfix = sprintf2(" (%s)|", formataddress(hub->sk->remote, hub->sk->remotelen));
1164 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1167 minsize = maxsize = -1;
1176 if((*(p++) == 'T') && (minsize == 0))
1183 if((p2 = strchr(p, '?')) == NULL)
1198 if((*p2 == 0) || (*p2 == '$'))
1206 if(!dotth && !strncmp(p, "TTH:", 4))
1209 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1214 memcpy(hashtth, buf, 24);
1217 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
1228 node = shareroot->child;
1230 for(i = 0; i < termnum; i++)
1236 if(node->f.b.type == FILE_REG)
1238 if((minsize >= 0) && (node->size < minsize))
1240 if((maxsize >= 0) && (node->size > maxsize))
1243 if(!skipcheck && dotth)
1245 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1250 for(i = 0; i < termnum; i++)
1254 if(wcsexists(node->name, terms[i]))
1258 } else if(node->child == NULL) {
1263 if(!skipcheck && (satisfied == termnum))
1265 /* Use DCCHARSET in $Get paths until further researched... */
1266 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
1268 if(node->f.b.hastth)
1270 buf2 = base32encode(node->hashtth, 24);
1271 qstrf(dsk, "%s%s\005%ji%sTTH:%.39s%s", prefix, buf, (intmax_t)node->size, infix, buf2, postfix);
1274 qstrf(dsk, "%s%s\005%ji%s%s%s", prefix, buf, (intmax_t)node->size, infix, hub->nativename, postfix);
1279 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1281 while(node->next == NULL)
1283 if((node = node->parent) == shareroot)
1287 if(node == shareroot)
1289 for(i = 0; i < termnum; i++)
1291 if(tersat[i] >= level)
1304 hubhandleaction(sk, fn, cmd, args);
1315 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1319 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1323 struct socket *newsk;
1324 struct sockaddr_in addr;
1327 if((p = strchr(args, ' ')) == NULL)
1330 if(strcmp(args, hub->nativenick))
1332 addr.sin_family = AF_INET;
1334 if((p = strchr(args, ':')) == NULL)
1337 addr.sin_port = htons(atoi(p));
1338 if(!inet_aton(args, &addr.sin_addr))
1340 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1342 hubhandleaction(sk, fn, cmd, args);
1345 static void sendctm(struct socket *sk, char *nick)
1347 struct sockaddr *addr;
1352 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
1354 if(addr->sa_family == AF_INET)
1355 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1357 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1361 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1367 if((p = strchr(args, ' ')) == NULL)
1370 if(strcmp(p, hub->nativenick))
1373 expectpeer(args, fn);
1374 hubhandleaction(sk, fn, cmd, args);
1377 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1380 struct fnetnode *node;
1385 for(node = fnetnodes; node != NULL; node = node->next)
1387 if(node->state == FNN_EST)
1390 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1391 hubhandleaction(sk, fn, cmd, args);
1394 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1401 if((p2 = strchr(p, ' ')) == NULL)
1405 if((p2 = strchr(p, ' ')) == NULL)
1408 if(strcmp(p, "From:"))
1411 if((p2 = strstr(p, " $")) == NULL)
1415 hubrecvchat(hub->sk, fn, p, p2);
1416 hubhandleaction(sk, fn, cmd, args);
1419 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1423 char *nick, *filename, *hubname;
1428 wchar_t *wnick, *wfile;
1432 if((p2 = strchr(p, ' ')) == NULL)
1437 if((p2 = strchr(p, 5)) == NULL)
1441 if((p2 = strchr(p, ' ')) == NULL)
1444 size = strtoll(p, NULL, 10);
1446 if((p2 = strchr(p, '/')) == NULL)
1451 if((p2 = strchr(p, 5)) == NULL)
1455 if((p2 = strstr(p, " (")) == NULL)
1458 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
1460 /* Use DCCHARSET in $Get paths until further researched... */
1461 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1466 sr = newsrchres(&dcnet, wfile, wnick);
1467 if(sr->peernick != NULL)
1469 sr->peernick = swcsdup(wnick);
1474 if(!strncmp(hubname, "TTH:", 4))
1476 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1479 sr->hash = newhash(L"TTH", 24, buf);
1483 getfnetnode(sr->fn = fn);
1486 hubhandleaction(sk, fn, cmd, args);
1489 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1491 /* Do nothing for now. */
1494 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1501 pw = wpfind(fn->args, L"password");
1502 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
1507 qstrf(sk, "$MyPass %s|", mbspw);
1509 fn->regstatus = FNNS_REG;
1510 hubhandleaction(sk, fn, cmd, args);
1513 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1518 fn->regstatus = FNNS_OP;
1519 hubhandleaction(sk, fn, cmd, args);
1522 static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1528 size_t arrsize, arrdata;
1531 if(hub->supports != NULL)
1533 for(i = 0; hub->supports[i] != NULL; i++)
1534 free(hub->supports[i]);
1535 free(hub->supports);
1538 arrsize = arrdata = 0;
1542 if((p2 = strchr(p, ' ')) != NULL)
1546 addtobuf(arr, sstrdup(p));
1547 } while((p = p2) != NULL);
1548 addtobuf(arr, NULL);
1549 hub->supports = arr;
1552 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1554 struct dcexppeer *expect;
1557 if(peer->nativename != NULL)
1558 free(peer->nativename);
1559 peer->nativename = sstrdup(args);
1560 if(peer->wcsname != NULL)
1561 free(peer->wcsname);
1562 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
1569 for(expect = expected; expect != NULL; expect = expect->next)
1571 if(!strcmp(expect->nick, args))
1578 hub = expect->fn->data;
1579 peer->fn = expect->fn;
1580 getfnetnode(peer->fn);
1581 peer->dcppemu = hub->dcppemu;
1582 freeexppeer(expect);
1587 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1591 struct transfer *transfer;
1593 if((p = strchr(args, ' ')) == NULL)
1596 if(!strcmp(args, "Upload"))
1598 if(!strcmp(args, "Download"))
1602 if((peer->transfer == NULL) || (mydir != peer->direction))
1607 if(peer->direction == TRNSD_DOWN)
1610 if(peer->wcsname == NULL)
1615 peer->direction = mydir;
1616 if(peer->direction == TRNSD_UP)
1618 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1623 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1625 if((transfer = finddownload(peer->wcsname)) == NULL)
1630 transferattach(transfer, &dctransfer, peer);
1631 transfersetstate(transfer, TRNS_HS);
1633 transfersetnick(transfer, peer->wcsname);
1634 peer->transfer = transfer;
1637 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1638 if(peer->key != NULL)
1639 qstrf(sk, "$Key %s|", peer->key);
1640 if(peer->direction == TRNSD_DOWN)
1645 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1648 struct transfer *transfer;
1650 if((p = strchr(args, ' ')) == NULL)
1653 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1655 key = dcmakekey(args);
1658 if(peer->wcsname == NULL)
1667 if((transfer = finddownload(peer->wcsname)) == NULL)
1669 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1674 peer->direction = TRNSD_UP;
1675 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1677 peer->direction = TRNSD_DOWN;
1678 transferattach(transfer, &dctransfer, peer);
1679 transfersetstate(transfer, TRNS_HS);
1681 transfersetnick(transfer, peer->wcsname);
1682 peer->transfer = transfer;
1683 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1684 qstrf(sk, "$Key %s|", key);
1687 if(peer->key != NULL)
1693 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1698 static void startdl(struct dcpeer *peer)
1700 if(peer->timeout != NULL)
1701 canceltimer(peer->timeout);
1702 peer->state = PEER_TRNS;
1703 transferstartdl(peer->transfer, peer->sk);
1704 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1705 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1708 static void startul(struct dcpeer *peer)
1710 if(peer->timeout != NULL)
1711 canceltimer(peer->timeout);
1712 peer->state = PEER_TRNS;
1713 transferstartul(peer->transfer, peer->sk);
1714 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
1717 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1720 struct transfer *transfer;
1722 if(peer->transfer == NULL)
1727 size = strtoll(args, NULL, 10);
1728 if(peer->transfer->size != size)
1730 transfersetsize(peer->transfer, size);
1731 transfer = peer->transfer;
1733 trytransferbypeer(transfer->fnet, transfer->peerid);
1737 qstr(peer->sk, "$Send|");
1740 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1742 if(peer->fetchingtthl)
1744 peer->fetchingtthl = 0;
1749 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1751 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1752 resettransfer(peer->transfer);
1758 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1760 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1762 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1763 resettransfer(peer->transfer);
1776 {"MyList.DcLst", &hmlistname, updatehmlist},
1777 {"files.xml", &xmllistname, updatexmllist},
1778 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1782 static int openfilelist(char *name)
1787 for(i = 0; lists[i].name != NULL; i++)
1789 if(!strcmp(name, lists[i].name))
1793 if(lists[i].name == NULL)
1796 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1798 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1801 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1808 static struct sharecache *findbytth(char *tth32)
1812 struct sharecache *node;
1814 if((buf = base32decode(tth32, &buflen)) == NULL)
1821 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1823 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1830 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1832 struct sharecache *node;
1839 if((p2 = strchr(p, sep)) != NULL)
1841 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1848 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1853 struct sharecache *node;
1854 struct socket *lesk;
1858 if(peer->transfer == NULL)
1863 if((p = strchr(args, '$')) == NULL)
1869 if((offset = (strtoll(p, NULL, 10) - 1)) < 0)
1874 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1876 qstr(sk, "$Error Could not send file list|");
1879 } else if(fd >= 0) {
1880 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1881 transfersetpath(peer->transfer, buf2);
1882 peer->transfer->flags.b.minislot = 1;
1886 /* Use DCCHARSET in $Get paths until further researched... */
1887 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1889 qstrf(sk, "$Error File not in share|");
1893 if((fd = opensharecache(node)) < 0)
1895 qstrf(sk, "$Error %s|", strerror(errno));
1899 buf = getfspath(node);
1900 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1901 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1903 transfersetpath(peer->transfer, buf2);
1906 if(fstat(fd, &sb) < 0)
1909 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1910 qstrf(sk, "$Error|");
1914 if(sb.st_size < 65536)
1915 peer->transfer->flags.b.minislot = 1;
1916 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1918 qstr(sk, "$MaxedOut|");
1922 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1925 qstrf(sk, "$Error Offset out of range|");
1929 lesk = wrapsock(fd);
1930 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1932 qstrf(sk, "$FileLength %ji|", (intmax_t)peer->transfer->size);
1935 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1937 if(peer->transfer == NULL)
1942 if(peer->transfer->localend == NULL)
1951 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1956 size_t arrsize, arrdata;
1958 if(peer->supports != NULL)
1960 for(i = 0; peer->supports[i] != NULL; i++)
1961 free(peer->supports[i]);
1962 free(peer->supports);
1965 arrsize = arrdata = 0;
1969 if((p2 = strchr(p, ' ')) != NULL)
1973 addtobuf(arr, sstrdup(p));
1974 } while((p = p2) != NULL);
1975 addtobuf(arr, NULL);
1976 peer->supports = arr;
1979 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1983 off_t start, numbytes;
1984 char *charset, *buf;
1986 struct sharecache *node;
1988 struct socket *lesk;
1990 if(peer->transfer == NULL)
1996 if((p2 = strchr(p, ' ')) == NULL)
2002 start = strtoll(p, NULL, 10);
2004 if((p2 = strchr(p, ' ')) == NULL)
2010 numbytes = strtoll(p, NULL, 10);
2012 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
2015 /* Use DCCHARSET in $Get paths until further researched... */
2016 charset = DCCHARSET;
2017 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
2018 initcompress(peer, CPRS_ZLIB);
2019 if(((fd = openfilelist(p)) < 0) && (errno != 0))
2021 qstr(sk, "$Error Could not send file list|");
2023 } else if(fd >= 0) {
2024 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
2025 transfersetpath(peer->transfer, buf2);
2026 peer->transfer->flags.b.minislot = 1;
2030 if((node = resdcpath(p, charset, '\\')) == NULL)
2032 qstr(sk, "$Error File not in cache|");
2035 if((fd = opensharecache(node)) < 0)
2037 qstrf(sk, "$Error %s|", strerror(errno));
2040 buf = getfspath(node);
2041 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2042 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2044 transfersetpath(peer->transfer, buf2);
2047 if(fstat(fd, &sb) < 0)
2050 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2051 qstr(sk, "$Error|");
2054 if(sb.st_size < 65536)
2055 peer->transfer->flags.b.minislot = 1;
2056 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2058 qstr(sk, "$MaxedOut|");
2061 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2064 qstr(sk, "$Error Offset out of range|");
2067 if((numbytes < 0) || (start + numbytes > sb.st_size))
2068 numbytes = sb.st_size - start;
2069 lesk = wrapsock(fd);
2070 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2072 qstrf(sk, "$Sending %ji|", (intmax_t)numbytes);
2076 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2080 off_t start, numbytes;
2081 struct sharecache *node;
2083 struct socket *lesk;
2087 if(peer->transfer == NULL)
2092 if((argv = parseadc(args)) == NULL)
2097 if(parrlen(argv) < 4)
2102 start = strtoll(argv[2], NULL, 10);
2103 numbytes = strtoll(argv[3], NULL, 10);
2106 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2108 qstr(sk, "$Error Could not send file list|");
2110 } else if(fd >= 0) {
2111 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2112 transfersetpath(peer->transfer, wbuf);
2113 peer->transfer->flags.b.minislot = 1;
2117 if(!strncmp(argv[1], "TTH/", 4))
2119 if((node = findbytth(argv[1] + 4)) == NULL)
2121 qstr(sk, "$Error File not in cache|");
2125 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2127 qstr(sk, "$Error File not in cache|");
2131 if((fd = opensharecache(node)) < 0)
2133 qstrf(sk, "$Error %s|", strerror(errno));
2136 buf = getfspath(node);
2137 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2138 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2140 transfersetpath(peer->transfer, wbuf);
2143 if(!strcmp(argv[0], "file"))
2145 for(i = 4; argv[i] != NULL; i++)
2147 if(!strcmp(argv[i], "ZL1"))
2148 initcompress(peer, CPRS_ZLIB);
2150 if(fstat(fd, &sb) < 0)
2152 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2153 qstr(sk, "$Error|");
2156 if(sb.st_size < 65536)
2157 peer->transfer->flags.b.minislot = 1;
2158 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2159 qstr(sk, "$MaxedOut|");
2162 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2164 qstr(sk, "$Error Offset out of range|");
2167 if((numbytes < 0) || (start + numbytes > sb.st_size))
2168 numbytes = sb.st_size - start;
2169 lesk = wrapsock(fd);
2170 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2173 qstr(sk, "$ADCSND");
2174 sendadc(sk, "file");
2175 sendadc(sk, argv[1]);
2176 sendadcf(sk, "%ji", (intmax_t)start);
2177 sendadcf(sk, "%ji", (intmax_t)numbytes);
2178 if(peer->compress == CPRS_ZLIB)
2182 } else if(!strcmp(argv[0], "tthl")) {
2184 * XXX: Implement full TTHL support.
2186 * In the meantime, this is better than nothing, since it at
2187 * least allows fetching of the TTH root if it isn't already
2192 qstr(sk, "$Error no TTHL data for virtual files|");
2195 qstr(sk, "$ADCSND");
2196 sendadc(sk, "tthl");
2197 sendadc(sk, argv[1]);
2201 sockqueue(sk, node->hashtth, 24);
2203 qstr(sk, "$Error Namespace not implemented|");
2213 static void handletthl(struct dcpeer *peer)
2217 while(peer->inbufdata >= 24)
2219 pushtigertree(&peer->tth, peer->inbuf);
2220 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2221 peer->curread += 24;
2223 if(peer->curread >= peer->totalsize)
2225 if(peer->timeout == NULL)
2226 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2227 peer->state = PEER_CMD;
2228 synctigertree(&peer->tth);
2229 restigertree(&peer->tth, buf);
2230 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2235 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2238 off_t start, numbytes;
2240 if(peer->transfer == NULL)
2245 if((argv = parseadc(args)) == NULL)
2250 if(parrlen(argv) < 4)
2255 start = strtoll(argv[2], NULL, 10);
2256 numbytes = strtoll(argv[3], NULL, 10);
2257 if(!strcmp(argv[0], "tthl"))
2259 if((start != 0) || (numbytes % 24 != 0))
2261 /* Weird. Bail out. */
2265 if(peer->timeout != NULL)
2266 canceltimer(peer->timeout);
2267 peer->state = PEER_TTHL;
2268 peer->totalsize = numbytes;
2270 peer->fetchingtthl = 0;
2271 inittigertree(&peer->tth);
2273 } else if(!strcmp(argv[0], "file")) {
2274 if(start != peer->transfer->curpos)
2279 if(start + numbytes != peer->transfer->size)
2281 transfersetsize(peer->transfer, start + numbytes);
2286 if(peer->inbufdata > 0)
2288 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2289 peer->inbufdata = 0;
2290 transread(sk, peer);
2293 /* We certainly didn't request this...*/
2302 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2306 if(peer->transfer == NULL)
2311 numbytes = strtoll(args, NULL, 10);
2312 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2314 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2319 if(peer->inbufdata > 0)
2321 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2322 peer->inbufdata = 0;
2323 transread(sk, peer);
2329 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2334 hubhandleaction(sk, fn, cmd, args);
2338 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2344 static int hubreqconn(struct fnetpeer *peer)
2349 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2354 if((hub = peer->fn->data) == NULL)
2359 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
2360 return(1); /* Shouldn't happen, of course, but who knows... */
2363 sendctm(hub->sk, mbsnick);
2364 expectpeer(mbsnick, peer->fn);
2366 qstrf(hub->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2372 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2375 char *mbsstring, *mbsto;
2378 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
2383 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
2388 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2395 if(strchr(mbsstring, '|') != NULL)
2406 qstrf(hub->sk, "<%s> %s|", hub->nativenick, mbsstring);
2408 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2411 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2418 static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2420 int minl, maxl, minr, maxr, retmin, retmax;
2425 findsizelimit(sexpr->l, &minl, &maxl);
2426 findsizelimit(sexpr->r, &minr, &maxr);
2427 retmin = (minl > minr)?minl:minr;
2428 if((maxl != -1) && (maxr != -1))
2429 retmax = (maxl < maxr)?maxl:maxr;
2438 findsizelimit(sexpr->l, &minl, &maxl);
2439 findsizelimit(sexpr->r, &minr, &maxr);
2440 retmin = (minl < minr)?minl:minr;
2441 if((maxl == -1) || (maxr == -1))
2444 retmax = (maxl > maxr)?maxl:maxr;
2447 findsizelimit(sexpr->l, &minl, &maxl);
2448 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2452 } else if((minl == 0) && (maxl != -1)) {
2455 } else if((minl != 0) && (maxl == -1)) {
2458 } else { /* This would yield two seperate intervals, which DC cannot handle */
2464 retmax = sexpr->d.n - 1;
2467 retmin = sexpr->d.n;
2468 retmax = sexpr->d.n;
2471 retmin = sexpr->d.n + 1;
2485 static struct hash *findsehash(struct sexpr *sexpr)
2487 struct hash *h1, *h2;
2492 if((h1 = findsehash(sexpr->l)) != NULL)
2494 if((h1 = findsehash(sexpr->r)) != NULL)
2498 if((h1 = findsehash(sexpr->l)) == NULL)
2500 if((h2 = findsehash(sexpr->r)) == NULL)
2506 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2507 return(sexpr->d.hash);
2514 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2517 struct wcslist *list, *cur;
2518 char *sstr, *buf, *p;
2519 size_t sstrsize, sstrdata;
2520 struct sockaddr *name;
2522 int minsize, maxsize;
2526 if((fn->state != FNN_EST) || (hub->sk == NULL) || (hub->sk->state != SOCK_EST))
2528 list = findsexprstrs(srch->sexpr);
2529 findsizelimit(srch->sexpr, &minsize, &maxsize);
2530 hash = findsehash(srch->sexpr);
2531 if((minsize != 0) && (maxsize != -1))
2533 /* Choose either minsize or maxsize by trying to determine
2534 * which choice will be most restrictive. The result can be
2535 * approximative at best anyway, so don't try too hard... */
2536 if((50000000 - maxsize) > (minsize - 50000000))
2542 sstrsize = sstrdata = 0;
2543 if((hash != NULL) && (hash->len == 24))
2545 /* Prioritize hash searches above all else */
2546 bufcat(sstr, "F?T?0?9?TTH:", 12);
2547 buf = base32encode(hash->buf, hash->len);
2549 bufcat(sstr, buf, 39);
2554 sizebuf2(sstr, sstrdata + 32, 1);
2555 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
2556 } else if(maxsize != -1) {
2557 sizebuf2(sstr, sstrdata + 32, 1);
2558 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
2560 bufcat(sstr, "F?F?0?1?", 8);
2564 for(cur = list; cur != NULL; cur = cur->next)
2566 /* Use DCCHARSET in $Get paths until further researched... */
2567 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2569 /* Can't find anything anyway if the search expression
2570 * requires characters outside DC's charset. There's
2571 * nothing technically wrong with the search itself,
2572 * however, so return success. This should be
2573 * considered as an optimization. */
2580 addtobuf(sstr, '$');
2582 * It probably doesn't hurt if buf contains any extra
2583 * dollar signs - it will just result in extra search
2584 * terms, and the extraneous results will be filtered by
2585 * the search layer anyway. It hurts if it contains any
2586 * pipes, though, so let's sell them for money.
2588 for(p = buf; *p; p++)
2593 bufcat(sstr, buf, strlen(buf));
2597 /* Will match all files... :-/ */
2598 addtobuf(sstr, '.');
2604 if(sockgetremotename2(udpsock, hub->sk, &name, &namelen) < 0)
2606 flog(LOG_WARNING, "cannot get address of UDP socket");
2608 qstrf(hub->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2612 qstrf(hub->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2616 fn->lastsrch = time(NULL);
2624 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2625 static struct command hubcmds[] =
2627 {"$Lock", cc(cmd_lock)},
2628 {"$HubName", cc(cmd_hubname)},
2629 {"$Hello", cc(cmd_hello)},
2630 {"$Quit", cc(cmd_quit)},
2631 {"$NickList", cc(cmd_nicklist)},
2632 {"$OpList", cc(cmd_oplist)},
2633 {"$MyINFO", cc(cmd_myinfo)},
2634 {"$ForceMove", cc(cmd_forcemove)},
2635 {"$Search", cc(cmd_search), .limit = 100},
2636 {"$MultiSearch", cc(cmd_search), .limit = 50},
2637 {"$ConnectToMe", cc(cmd_connecttome), .limit = 200},
2638 {"$RevConnectToMe", cc(cmd_revconnecttome), .limit = 500},
2639 {"$GetNetInfo", cc(cmd_getnetinfo)},
2640 {"$To:", cc(cmd_to)},
2641 {"$SR", cc(cmd_sr)},
2642 {"$UserCommand", cc(cmd_usercommand)},
2643 {"$GetPass", cc(cmd_getpass)},
2644 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2645 {"$Supports", cc(cmd_hubsupports)},
2649 static struct command peercmds[] =
2651 {"$MyNick", cc(cmd_mynick)},
2652 {"$Lock", cc(cmd_peerlock)},
2653 {"$Direction", cc(cmd_direction)},
2654 {"$Key", cc(cmd_key)},
2655 {"$FileLength", cc(cmd_filelength)},
2656 {"$Error", cc(cmd_error)},
2657 {"$MaxedOut", cc(cmd_maxedout)},
2658 {"$Get", cc(cmd_get)},
2659 {"$Send", cc(cmd_send)},
2660 {"$Supports", cc(cmd_supports)},
2661 {"$GetBlock", cc(cmd_getblock)},
2662 {"$UGetBlock", cc(cmd_getblock)},
2663 {"$GetZBlock", cc(cmd_getblock)},
2664 {"$UGetZBlock", cc(cmd_getblock)},
2665 {"$ADCGET", cc(cmd_adcget)},
2666 {"$ADCSND", cc(cmd_adcsnd), .stop = 1},
2667 {"$Sending", cc(cmd_sending), .stop = 1},
2672 static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2674 CBUNREG(transfer, trans_filterout, peer);
2677 peer->transfer = NULL;
2681 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2685 unsigned char outbuf[1024];
2689 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2691 if(sockqueuesize(peer->sk) < 65536)
2693 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2695 if(peer->compress == CPRS_NONE)
2697 sockqueue(peer->sk, buf, bufsize);
2698 } else if(peer->compress == CPRS_ZLIB) {
2699 cstr = peer->cprsdata;
2700 cstr->next_in = buf;
2701 cstr->avail_in = bufsize;
2702 while(cstr->avail_in > 0)
2704 cstr->next_out = outbuf;
2705 cstr->avail_out = sizeof(outbuf);
2706 if((ret = deflate(cstr, 0)) != Z_OK)
2708 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2712 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2717 if(peer->state == PEER_SYNC)
2719 if(peer->compress == CPRS_ZLIB)
2721 cstr = peer->cprsdata;
2722 cstr->next_in = NULL;
2726 cstr->next_out = outbuf;
2727 cstr->avail_out = sizeof(outbuf);
2728 ret = deflate(cstr, Z_FINISH);
2729 if((ret != Z_OK) && (ret != Z_STREAM_END))
2731 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2735 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2736 } while(ret != Z_STREAM_END);
2742 if(peer->timeout == NULL)
2743 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2744 peer->state = PEER_CMD;
2746 transfersetstate(transfer, TRNS_HS);
2747 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2748 transfer->flags.b.minislot = 0;
2749 peer->sk->writecb = NULL;
2756 static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2758 peer->state = PEER_SYNC;
2759 dctransgotdata(transfer, peer);
2762 static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2764 if(transferdatasize(transfer) < 65536)
2765 peer->sk->ignread = 0;
2768 static void transread(struct socket *sk, struct dcpeer *peer)
2772 struct transfer *transfer;
2774 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2776 if(peer->transfer == NULL)
2782 transferputdata(peer->transfer, buf, bufsize);
2784 if(peer->transfer->curpos >= peer->transfer->size)
2786 transfer = peer->transfer;
2787 transferdetach(transfer);
2788 transferendofdata(transfer);
2791 if(transferdatasize(peer->transfer) > 65535)
2795 static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2797 struct transfer *transfer;
2799 if((transfer = peer->transfer) == NULL)
2804 transferdetach(transfer);
2805 transferendofdata(transfer);
2808 static void transwrite(struct socket *sk, struct dcpeer *peer)
2810 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2812 if(peer->transfer == NULL)
2817 dctransgotdata(peer->transfer, peer);
2820 static void udpread(struct socket *sk, void *data)
2822 char *buf, *p, *p2, *hashbuf;
2823 size_t buflen, hashlen;
2824 char *nick, *filename, *hubname;
2825 struct sockaddr_in hubaddr;
2828 struct fnetnode *fn, *myfn;
2831 wchar_t *wnick, *wfile;
2834 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2836 buf = srealloc(buf, buflen + 1);
2838 if(!strncmp(buf, "$SR ", 4))
2842 if((p2 = strchr(p, ' ')) == NULL)
2850 if((p2 = strchr(p, 5)) == NULL)
2857 if((p2 = strchr(p, ' ')) == NULL)
2863 size = strtoll(p, NULL, 10);
2865 if((p2 = strchr(p, '/')) == NULL)
2873 if((p2 = strchr(p, 5)) == NULL)
2880 if((p2 = strstr(p, " (")) == NULL)
2887 if((p2 = strchr(p, ':')) == NULL)
2893 hubaddr.sin_family = AF_INET;
2894 if(!inet_aton(p, &hubaddr.sin_addr))
2900 if((p2 = strchr(p, ')')) == NULL)
2906 hubaddr.sin_port = htons(atoi(p));
2907 /* Use DCCHARSET in $Get paths until further researched... */
2908 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2915 if(!strncmp(hubname, "TTH:", 4))
2917 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2920 hash = newhash(L"TTH", 24, hashbuf);
2924 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2926 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2928 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2943 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2945 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2947 if((hub->sk != NULL) && addreq(hub->sk->remote, (struct sockaddr *)&hubaddr))
2958 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2963 sr = newsrchres(&dcnet, wfile, wnick);
2964 if(sr->peernick != NULL)
2966 sr->peernick = swcsdup(wnick);
2972 getfnetnode(sr->fn = myfn);
2981 static void hubread(struct socket *sk, struct fnetnode *fn)
2984 struct command *cmd;
2986 size_t datalen, cnlen;
2989 hub = (struct dchub *)fn->data;
2990 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2992 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2994 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2995 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2997 p = hub->inbuf + hub->inbufdata;
2998 hub->inbufdata += datalen;
2999 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
3002 for(cmd = hubcmds; cmd->handler != NULL; cmd++)
3004 cnlen = strlen(cmd->name);
3005 if(!strncmp(hub->inbuf, cmd->name, cnlen) && ((hub->inbuf[cnlen] == ' ') || (hub->inbuf[cnlen] == 0)))
3008 if((cmd->limit == 0) || (hub->queue.size < cmd->limit))
3009 newqcmd(&hub->queue, hub->inbuf);
3010 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
3011 datalen = hub->inbufdata;
3014 if(hub->queue.size > 1000)
3018 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
3023 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
3029 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
3031 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
3036 if(hub == NULL) /* Not yet connected */
3041 if(hub->nativenick != NULL)
3042 free(hub->nativenick);
3043 hub->nativenick = buf;
3047 static struct dchub *newdchub(struct fnetnode *fn)
3054 new = smalloc(sizeof(*new));
3055 memset(new, 0, sizeof(*new));
3057 if(confgetint("dc", "dcppemu"))
3059 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3067 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3069 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3071 if(!havecharset(charset))
3079 new->charset = charset;
3081 new->charset = sstrdup(DCCHARSET);
3082 if(hubsetnick(fn, fn->mynick))
3083 fnetsetnick(fn, L"DoldaConnectUser-IN");
3084 /* IN as in Invalid Nick */
3088 static struct dcpeer *newdcpeer(struct socket *sk)
3092 new = smalloc(sizeof(*new));
3093 memset(new, 0, sizeof(*new));
3094 new->transfer = NULL;
3097 if(confgetint("dc", "dcppemu"))
3108 static void freedcpeer(struct dcpeer *peer)
3111 struct qcommand *qcmd;
3116 if(peer->next != NULL)
3117 peer->next->prev = peer->prev;
3118 if(peer->prev != NULL)
3119 peer->prev->next = peer->next;
3120 if(peer->transfer != NULL)
3122 if(peer->transfer->dir == TRNSD_UP)
3123 peer->transfer->close = 1;
3124 if(peer->transfer->dir == TRNSD_DOWN)
3125 resettransfer(peer->transfer);
3126 transferdetach(peer->transfer);
3128 if(peer->timeout != NULL)
3129 canceltimer(peer->timeout);
3130 if(peer->sk->data == peer)
3131 peer->sk->data = NULL;
3132 peer->sk->readcb = NULL;
3133 peer->sk->writecb = NULL;
3134 peer->sk->errcb = NULL;
3137 if(peer->supports != NULL)
3139 for(i = 0; peer->supports[i] != NULL; i++)
3140 free(peer->supports[i]);
3141 free(peer->supports);
3143 if(peer->inbuf != NULL)
3145 if(peer->key != NULL)
3147 if(peer->wcsname != NULL)
3148 free(peer->wcsname);
3149 if(peer->nativename != NULL)
3150 free(peer->nativename);
3151 if(peer->charset != NULL)
3152 free(peer->charset);
3153 if(peer->fn != NULL)
3154 putfnetnode(peer->fn);
3155 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3161 static void hubconnect(struct fnetnode *fn, struct socket *sk)
3165 sk->readcb = (void (*)(struct socket *, void *))hubread;
3166 sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3167 fn->data = hub = newdchub(fn);
3169 getsock(hub->sk = sk);
3173 static void hubdestroy(struct fnetnode *fn)
3177 struct qcommand *qcmd;
3179 hub = (struct dchub *)fn->data;
3181 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3183 if(hub->supports != NULL)
3185 for(i = 0; hub->supports[i] != NULL; i++)
3186 free(hub->supports[i]);
3187 free(hub->supports);
3189 if(hub->nativename != NULL)
3190 free(hub->nativename);
3191 if(hub->nativenick != NULL)
3192 free(hub->nativenick);
3193 if(hub->charset != NULL)
3195 if(hub->inbuf != NULL)
3200 static void hubkill(struct fnetnode *fn)
3204 hub = (struct dchub *)fn->data;
3208 static wchar_t *dcbasename(wchar_t *filename)
3212 if((ret = wcsrchr(filename, L'\\')) != NULL)
3217 static struct transferiface dctransfer =
3219 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3220 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3221 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3222 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3225 static struct fnet dcnet =
3228 .connect = hubconnect,
3229 .destroy = hubdestroy,
3231 .setnick = hubsetnick,
3232 .reqconn = hubreqconn,
3233 .sendchat = hubsendchat,
3234 .search = hubsearch,
3235 .filebasename = dcbasename
3238 static void peerread(struct socket *sk, struct dcpeer *peer)
3241 size_t datalen, cnlen;
3242 struct command *cmd;
3244 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3246 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3247 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3249 peer->inbufdata += datalen;
3250 if(peer->state == PEER_CMD)
3253 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3256 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3258 cnlen = strlen(cmd->name);
3259 if(!strncmp(peer->inbuf, cmd->name, cnlen) && ((peer->inbuf[cnlen] == ' ') || (peer->inbuf[cnlen] == 0)))
3262 if((cmd->limit == 0) || (peer->queue.size < cmd->limit))
3263 newqcmd(&peer->queue, peer->inbuf);
3264 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3267 peer->state = PEER_STOP;
3270 if(peer->queue.size > 50)
3274 } else if(peer->state == PEER_TTHL) {
3277 if(peer->inbufdata > 500000)
3281 static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3286 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3288 struct dcpeer *peer;
3298 peer = newdcpeer(sk);
3301 peer->dcppemu = hub->dcppemu;
3302 sk->readcb = (void (*)(struct socket *, void *))peerread;
3303 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3305 socksettos(sk, confgetint("fnet", "fnptos"));
3307 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3312 static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3314 struct dcpeer *peer;
3316 peer = newdcpeer(newsk);
3318 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3319 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3321 socksettos(newsk, confgetint("fnet", "fnptos"));
3322 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3325 static void updatehmlist(void)
3327 int i, lev, ic, ret;
3328 struct sharecache *node;
3329 char *buf, *buf2, numbuf[32];
3330 size_t bufsize, bufdata;
3334 buf = smalloc(bufsize = 65536);
3335 node = shareroot->child;
3340 /* Use DCCHARSET in $Get paths until further researched... */
3341 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3343 for(i = 0; i < lev; i++)
3345 bufcat(buf, buf2, strlen(buf2));
3347 if(node->f.b.type == FILE_REG)
3350 sprintf(numbuf, "%ji", (intmax_t)node->size);
3351 bufcat(buf, numbuf, strlen(numbuf));
3358 if((node->child != NULL) && !ic)
3362 } else if(node->next != NULL) {
3365 while(node->next == NULL)
3368 node = node->parent;
3369 if(node == shareroot)
3372 if(node == shareroot)
3377 if(hmlistname != NULL)
3382 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3383 if((fd = mkstemp(hmlistname)) < 0)
3385 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3390 * I do not want to implement a good Huffman encoder, and it's not
3391 * like Huffman encoding actually yields any impressive results
3392 * for DC file lists anyway, so I'll just output a bogus
3393 * tree. Implement a good encoder if you want to.
3395 write(fd, "HE3\r\0", 5);
3396 write(fd, &bufdata, 4);
3398 write(fd, &ibuf, 2);
3400 for(i = 0; i < 256; i++)
3403 write(fd, &ibuf, 1);
3405 for(i = 0; i < 256; i++)
3407 for(buf2 = buf; bufdata > 0;)
3409 if((ret = write(fd, buf2, bufdata)) < 0)
3411 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3422 static struct xmlent
3429 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3433 static wchar_t *escapexml(wchar_t *src)
3435 static wchar_t *buf = NULL;;
3438 size_t bufsize, bufdata;
3444 bufsize = bufdata = 0;
3445 for(; *src != L'\0'; src++)
3448 if((c > 0) && (c < 32))
3450 bufcat(buf, L"&#", 2);
3451 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3452 bufcat(buf, nbuf, ret);
3453 addtobuf(buf, L';');
3455 for(ent = entities; ent->ent != NULL; ent++)
3459 bufcat(buf, ent->ent, wcslen(ent->ent));
3463 if(ent->ent == NULL)
3464 addtobuf(buf, *src);
3467 addtobuf(buf, L'\0');
3471 static void updatexmllist(void)
3475 char cidbuf[14], *namebuf;
3477 struct sharecache *node;
3479 if(xmllistname != NULL)
3481 unlink(xmllistname);
3484 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3485 if((fd = mkstemp(xmllistname)) < 0)
3487 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3492 if((fs = fdopen(fd, "w")) == NULL)
3494 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3495 unlink(xmllistname);
3501 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3502 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3503 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3505 if(confgetint("dc", "dcppemu"))
3506 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3508 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
3510 node = shareroot->child;
3514 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3516 for(i = 0; i < lev; i++)
3518 if(node->child != NULL)
3520 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3525 fprintf(fs, "<File Name=\"%s\" Size=\"%ji\"", namebuf, (intmax_t)node->size);
3526 if(node->f.b.hastth)
3528 hashbuf = base32encode(node->hashtth, 24);
3529 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3532 fprintf(fs, "/>\r\n");
3534 while(node->next == NULL)
3536 node = node->parent;
3537 if(node == shareroot)
3542 for(i = 0; i < lev; i++)
3544 fprintf(fs, "</Directory>\r\n");
3547 if(node == shareroot)
3553 if(confgetint("dc", "dcppemu"))
3554 fprintf(fs, "</FileListing>");
3556 fprintf(fs, "</FileListing>\r\n");
3560 static void updatexmlbz2list(void)
3569 if(xmllistname == NULL)
3571 if((in = fopen(xmllistname, "r")) == NULL)
3573 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3576 if(xmlbz2listname != NULL)
3578 unlink(xmlbz2listname);
3579 free(xmlbz2listname);
3581 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3582 if((fd = mkstemp(xmlbz2listname)) < 0)
3584 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3585 free(xmlbz2listname);
3586 xmlbz2listname = NULL;
3590 if((real = fdopen(fd, "w")) == NULL)
3592 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3594 unlink(xmlbz2listname);
3595 free(xmlbz2listname);
3596 xmlbz2listname = NULL;
3600 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3603 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3605 unlink(xmlbz2listname);
3606 free(xmlbz2listname);
3607 xmlbz2listname = NULL;
3613 bufdata = fread(buf, 1, sizeof(buf), in);
3614 BZ2_bzWrite(&err, out, buf, bufdata);
3617 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3621 static void listtimercb(int cancelled, void *uudata)
3623 listwritetimer = NULL;
3628 static void updatelists(int now)
3630 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3634 if(listwritetimer == NULL)
3635 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
3638 if(listwritetimer != NULL)
3639 canceltimer(listwritetimer);
3645 static int shareupdate(unsigned long long uusharesize, void *data)
3651 static char *quotestr(char *str)
3655 size_t bufsize, bufdata;
3657 static char *enc = NULL;
3658 size_t encsize, encdata;
3661 bufsize = bufdata = 0;
3662 for(p = (unsigned char *)str; *p; p++)
3665 bufcat(buf, "\\b", 2);
3667 bufcat(buf, "\\t", 2);
3669 bufcat(buf, "\\n", 2);
3671 bufcat(buf, "\\r", 2);
3673 bufcat(buf, "\\\\", 2);
3677 bprintf(buf, "\\x%02x", *p);
3683 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3685 enc = icwcstombs(wbuf, NULL);
3690 encsize = encdata = 0;
3691 for(p = buf; *p; p++) {
3695 bprintf(buf, "\\x%x", *p);
3702 static void logunimpl(char *list, char *cmd, char *args)
3706 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3708 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3713 fputs(quotestr(cmd), log);
3717 fputs(quotestr(args), log);
3723 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3726 struct command *cmd;
3728 if((p = strchr(qcmd->string, ' ')) != NULL)
3730 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3732 if(!strcmp(cmd->name, qcmd->string))
3735 if(cmd->handler != NULL)
3737 cmd->handler(sk, data, qcmd->string, p);
3738 } else if(confgetint("dc", "logunimpl")) {
3739 if(cmdlist == hubcmds)
3740 logunimpl("hub", qcmd->string, p);
3741 else if(cmdlist == peercmds)
3742 logunimpl("peer", qcmd->string, p);
3744 logunimpl("other?!", qcmd->string, p);
3748 static int run(void)
3750 struct fnetnode *fn, *nextfn;
3752 struct dcpeer *peer, *nextpeer;
3753 struct qcommand *qcmd;
3758 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3761 if(fn->fnet != &dcnet)
3763 if(fn->data == NULL)
3765 hub = (struct dchub *)fn->data;
3766 while((quota > 0) && ((qcmd = ulqcmd(&hub->queue)) != NULL))
3768 if(*qcmd->string == '$')
3770 if((hub->sk != NULL) && (hub->sk->state == SOCK_EST))
3771 dispatchcommand(qcmd, hubcmds, hub->sk, fn);
3772 } else if(*qcmd->string != 0) {
3773 hubrecvchat(hub->sk, fn, NULL, qcmd->string);
3779 if(hub->queue.size < 1000)
3780 hub->sk->ignread = 0;
3785 for(peer = peers; peer != NULL; peer = nextpeer)
3787 nextpeer = peer->next;
3788 while((quota > 0) && ((qcmd = ulqcmd(&peer->queue)) != NULL))
3790 if(peer->timeout != NULL)
3791 canceltimer(peer->timeout);
3792 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3793 if(*qcmd->string == '$')
3794 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3799 if((peer->queue.size < 50) && (peer->inbufdata < 500000))
3800 peer->sk->ignread = 0;
3807 static void preinit(int hup)
3814 static int updateudpport(struct configvar *var, void *uudata)
3816 struct sockaddr_in addr;
3817 struct socket *newsock;
3819 memset(&addr, 0, sizeof(addr));
3820 addr.sin_family = AF_INET;
3821 addr.sin_port = htons(var->val.num);
3822 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3824 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3827 newsock->readcb = udpread;
3834 static int updatetcpport(struct configvar *var, void *uudata)
3836 struct sockaddr_in addr;
3837 struct socket *newsock;
3839 memset(&addr, 0, sizeof(addr));
3840 addr.sin_family = AF_INET;
3841 addr.sin_port = htons(var->val.num);
3842 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3843 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3850 static int init(int hup)
3852 struct sockaddr_in addr;
3856 GCBREG(sharechangecb, shareupdate, NULL);
3861 addr.sin_family = AF_INET;
3862 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3863 addr.sin_port = htons(confgetint("dc", "udpport"));
3864 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3866 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3869 udpsock->readcb = udpread;
3870 addr.sin_port = htons(confgetint("dc", "tcpport"));
3871 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3872 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3873 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3874 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3875 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3880 static void terminate(void)
3882 if(hmlistname != NULL)
3887 if(xmllistname != NULL)
3889 unlink(xmllistname);
3892 if(xmlbz2listname != NULL)
3894 unlink(xmlbz2listname);
3895 free(xmlbz2listname);
3899 static struct configvar myvars[] =
3901 /** Specifies the share description reported to other DC users. */
3902 {CONF_VAR_STRING, "desc", {.str = L""}},
3903 /** Specifies the speed reported to other DC users. Normal values
3904 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3905 * LAN(T1) or LAN(T3)*/
3906 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3907 /** The e-mail address to report to other DC users. */
3908 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3909 /** Specifies a specific UDP port to use for DC search results. If
3910 * left unspecified, a port is allocated dynamically. Useful for
3911 * NAT routers (see also the net.visibleipv4 address for those
3913 {CONF_VAR_INT, "udpport", {.num = 0}},
3914 /** Specifies a specific TCP port to use for DC peer
3915 * connections. If left unspecified, a port is allocated
3916 * dynamically. Useful for NAT routers (see also the
3917 * net.visibleipv4 address for those cases). */
3918 {CONF_VAR_INT, "tcpport", {.num = 0}},
3919 /** If set to true, doldacond will do its best to emulate DC++
3920 * (currently v0.674). This should be left off if at all possible,
3921 * since turning it on will violate the rules of most hubs and
3922 * thus give hub owners an actual reason to kick you if it is
3923 * detected. It might be needed for some of the more bone-headed
3924 * hub owners, though. Note that DC++ emulation can also be turned
3925 * on or off for individual hubs, overriding this setting. */
3926 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
3927 /** Use for debugging. If set to true, doldacond will log all
3928 * unknown commands it receives, and their arguments, to
3929 * /tmp/dc-unimpl. */
3930 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
3931 /** If set to true, doldacond will hide its support for deflate
3932 * compression of transfers from other clients, so that they will
3933 * not request compressed uploads. Compressed transfers may
3934 * consume a non-trivial amount of CPU time on slower machines. */
3935 {CONF_VAR_BOOL, "hidedeflate", {.num = 0}},
3939 static struct module me =
3948 .terminate = terminate,