2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <netinet/in.h>
26 #include <arpa/inet.h>
44 #include "sysevents.h"
49 * The Direct Connect protocol is extremely ugly. Thus, this code must
50 * also be a bit ugly in certain places. Please forgive me. =/
52 * This also means that there might be some pieces of the code that
53 * look completely illogical to you, and you think that you may make
54 * them much neater/better. However, in many cases it might just be
55 * that it's required to cope with some oddity of the protocol, such
56 * as the amazingly ugly delayed key response in the peer protocol.
59 /* I assume this is the correct character set to use for DC,
60 * considering it was developed without i18n support under Windows */
61 #define DCCHARSET "windows-1252"
75 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
82 struct qcommand *next;
88 struct qcommand *f, *l;
96 size_t inbufdata, inbufsize;
97 struct qcmdqueue queue;
98 int extended, dcppemu;
107 struct dcexppeer *next, *prev;
110 struct timer *expire;
115 struct dcpeer *next, *prev;
119 size_t inbufdata, inbufsize;
120 off_t curread, totalsize;
122 struct timer *timeout;
123 struct qcmdqueue queue;
124 struct transfer *transfer;
125 struct socket *trpipe;
127 int ptclose; /* Close after transfer is complete */
128 int accepted; /* If false, we connected, otherwise, we accepted */
129 int extended, dcppemu;
130 int direction; /* Using the constants from transfer.h */
132 int hascurpos, fetchingtthl, notthl;
133 struct tigertreehash tth;
142 static struct fnet dcnet;
143 static struct socket *udpsock = NULL;
144 static struct lport *tcpsock = NULL;
145 static struct dcpeer *peers = NULL;
147 static struct dcexppeer *expected = NULL;
148 static char *hmlistname = NULL;
149 static char *xmllistname = NULL;
150 static char *xmlbz2listname = NULL;
151 static struct timer *listwritetimer = NULL;
153 static struct socket *mktrpipe(struct dcpeer *peer);
154 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
155 static void freedcpeer(struct dcpeer *peer);
156 static void transread(struct socket *sk, struct dcpeer *peer);
157 static void transerr(struct socket *sk, int err, struct dcpeer *peer);
158 static void transwrite(struct socket *sk, struct dcpeer *peer);
159 static void updatehmlist(void);
160 static void updatexmllist(void);
161 static void updatexmlbz2list(void);
162 static void requestfile(struct dcpeer *peer);
163 static void updatelists(int now);
165 static int reservedchar(unsigned char c)
167 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
170 /* Oh, how I despise having to do this... */
171 static char *dcmakekey(char *lock)
177 buf = smalloc(strlen(lock));
180 for(i = 0; lock[i]; i++)
182 buf[i] = lock[i] ^ save;
183 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
185 if((i != 0) && reservedchar(buf[i]))
190 buf[0] ^= buf[i - 1];
191 if(reservedchar(buf[0]))
195 key = smalloc(len + 1);
197 for(i = 0; lock[i] != 0; i++)
199 if(reservedchar(buf[i]))
200 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
202 key[offset++] = buf[i];
209 static wchar_t *nmdc2path(char *nmdc, char *charset)
213 if((ret = icmbstowcs(nmdc, charset)) == NULL)
215 for(p = ret; *p != L'\0'; p++) {
222 static char *path2nmdc(wchar_t *path, char *charset)
226 if((ret = icwcstombs(path, charset)) == NULL)
228 for(p = ret; *p; p++) {
235 static wchar_t *adc2path(char *adc)
237 return(icmbstowcs(adc, "UTF-8"));
240 static char *path2adc(wchar_t *path)
242 return(icwcstombs(path, "UTF-8"));
245 static int isdchash(struct hash *hash)
247 if(wcscmp(hash->algo, L"TTH"))
255 * Uncomment when used!
257 static int hubsupports(struct dchub *hub, char *cap)
261 if(hub->supports == NULL)
263 for(p = hub->supports; *p != NULL; p++)
265 if(!strcasecmp(*p, cap))
272 static int supports(struct dcpeer *peer, char *cap)
276 if(peer->supports == NULL)
278 for(p = peer->supports; *p != NULL; p++)
280 if(!strcasecmp(*p, cap))
286 static void endcompress(struct dcpeer *peer)
288 if(peer->compress == CPRS_ZLIB)
290 deflateEnd(peer->cprsdata);
291 free(peer->cprsdata);
293 peer->compress = CPRS_NONE;
296 static void initcompress(struct dcpeer *peer, int algo)
301 peer->compress = algo;
302 if(algo == CPRS_ZLIB)
304 peer->cprsdata = smalloc(sizeof(z_stream));
305 memset(peer->cprsdata, 0, sizeof(z_stream));
306 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
308 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
314 static void unquote(wchar_t *in)
318 for(p = in; *p != L'\0'; p++)
322 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
329 if(!wcscmp(p + 1, L"amp"))
332 } else if(p[1] == L'#') {
333 nc = ucptowc(wcstol(p + 2, NULL, 10));
342 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
347 static void freeexppeer(struct dcexppeer *ep)
350 ep->next->prev = ep->prev;
352 ep->prev->next = ep->next;
357 if(ep->expire != NULL)
358 canceltimer(ep->expire);
362 static void exppeerexpire(int cancelled, struct dcexppeer *ep)
369 static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
371 struct dcexppeer *ep;
373 ep = smalloc(sizeof(*ep));
374 ep->nick = sstrdup(nick);
375 getfnetnode(ep->fn = fn);
376 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
385 static struct qcommand *newqcmd(struct qcmdqueue *queue, char *string)
387 struct qcommand *new;
389 new = smalloc(sizeof(*new));
390 new->string = sstrdup(string);
395 queue->l->next = new;
401 static struct qcommand *ulqcmd(struct qcmdqueue *queue)
403 struct qcommand *qcmd;
405 if((qcmd = queue->f) == NULL)
407 if((queue->f = qcmd->next) == NULL)
413 static void freeqcmd(struct qcommand *qcmd)
419 static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
421 wchar_t *chat, *wfrom, *wpeer;
423 struct fnetpeer *peer;
427 end = string + strlen(string);
428 while((p = strchr(string, 13)) != NULL)
429 memmove(p, p + 1, (end-- - p));
432 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
433 string += strlen(from) + 2;
434 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
436 wpeer = swcsdup(wfrom);
442 for(p = string + 1; *p; p++)
444 if((*p == ' ') || (*p == '>'))
452 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
458 wpeer = swcsdup(L"");
460 if((chat = icmbstowcs(string, hub->charset)) == NULL)
470 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
471 fnethandlechat(fn, 1, wfrom, wpeer, chat);
473 fnethandlechat(fn, 0, wfrom, wpeer, chat);
475 fnethandlechat(fn, 1, L"", wpeer, chat);
483 static void peertimeout(int cancelled, struct dcpeer *peer)
485 peer->timeout = NULL;
491 static void sendadc(struct socket *sk, char *arg)
494 size_t bufsize, bufdata;
497 bufsize = bufdata = 0;
503 bufcat(buf, "\\s", 2);
504 } else if(*arg == '\n') {
505 bufcat(buf, "\\n", 2);
506 } else if(*arg == '\\') {
507 bufcat(buf, "\\\\", 2);
512 sockqueue(sk, buf, bufdata);
516 #if defined(__GNUC__)
517 static void __attribute__ ((format (printf, 2, 3))) sendadcf(struct socket *sk, char *arg, ...)
519 static void sendadcf(struct socket *sk, char *arg, ...)
526 buf = vsprintf2(arg, args);
534 static char **parseadc(char *args)
537 size_t retbufsize, retbufdata;
539 size_t bufsize, bufdata;
544 retbufsize = retbufdata = bufsize = bufdata = 0;
553 else if(*args != ' ')
557 if((*args == ' ') || (*args == 0))
560 addtobuf(retbuf, buf);
562 bufsize = bufdata = 0;
565 } else if(*args == '\\') {
568 addtobuf(buf, *args);
577 addtobuf(retbuf, NULL);
580 } else if((*args == 's') || (*args == ' ')) {
582 } else if(*args == 'n') {
584 } else if(*args == '\\') {
594 addtobuf(retbuf, NULL);
598 /* Macros useful in command handlers */
599 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
600 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
601 #define qstrf(sk, strandargs...) \
604 if((__buf__ = sprintf2(strandargs)) != NULL) { \
605 sockqueue(sk, __buf__, strlen(__buf__)); \
610 static char *tr(char *str, char *trans)
614 for(; *trans; trans += 2)
616 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
622 static char *getadcid(struct dcpeer *peer)
629 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
631 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
633 buf = base32encode(peer->transfer->hash->buf, 24);
634 ret = sprintf2("TTH/%.39s", buf);
637 ret = path2adc(peer->transfer->path);
643 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
645 if(!wcscmp(cmd, L"resume"))
649 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
652 transfer->curpos = wcstoll(arg, NULL, 10);
661 static void sendmynick(struct dcpeer *peer)
667 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
669 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
672 static void sendpeerlock(struct dcpeer *peer)
675 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
677 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
680 static void sendsupports(struct dcpeer *peer)
683 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
685 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF");
686 if(!confgetint("dc", "hidedeflate"))
687 qstr(peer->sk, " GetZBlock ZLIG");
692 static void requestfile(struct dcpeer *peer)
696 if(peer->transfer->size == -1)
698 /* Use DCCHARSET for $Get paths until further researched... */
699 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
701 transferseterror(peer->transfer, TRNSE_NOTFOUND);
705 /* The transfer will be restarted later from
706 * cmd_filelength when it detects that the sizes
708 qstrf(peer->sk, "$Get %s$1|", buf);
712 if((peer->transfer->hash == NULL) && !peer->notthl)
714 if(supports(peer, "adcget") && supports(peer, "tthl"))
716 qstr(peer->sk, "$ADCGET");
717 sendadc(peer->sk, "tthl");
718 if((buf = getadcid(peer)) == NULL)
720 transferseterror(peer->transfer, TRNSE_NOTFOUND);
724 sendadc(peer->sk, buf);
726 sendadc(peer->sk, "0");
727 sendadc(peer->sk, "-1");
729 peer->fetchingtthl = 1;
735 if(forkfilter(peer->transfer))
737 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
743 if(supports(peer, "adcget"))
745 qstr(peer->sk, "$ADCGET");
746 sendadc(peer->sk, "file");
747 if((buf = getadcid(peer)) == NULL)
749 transferseterror(peer->transfer, TRNSE_NOTFOUND);
753 sendadc(peer->sk, buf);
755 sendadcf(peer->sk, "%ji", (intmax_t)peer->transfer->curpos);
756 sendadcf(peer->sk, "%ji", (intmax_t)(peer->transfer->size - peer->transfer->curpos));
758 } else if(supports(peer, "xmlbzlist")) {
759 if((buf = path2nmdc(peer->transfer->path, "UTF-8")) == NULL)
761 transferseterror(peer->transfer, TRNSE_NOTFOUND);
765 qstrf(peer->sk, "$UGetBlock %ji %ji %s|", (intmax_t)peer->transfer->curpos, (intmax_t)(peer->transfer->size - peer->transfer->curpos), buf);
768 /* Use DCCHARSET for $Get paths until further researched... */
769 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
771 transferseterror(peer->transfer, TRNSE_NOTFOUND);
775 qstrf(peer->sk, "$Get %s$%ji|", buf, (intmax_t)peer->transfer->curpos + 1);
780 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
784 struct fnetnode *cfn;
788 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
789 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
790 qstrf(sk, "%s", buf);
792 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
794 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
796 if(cfn->regstatus == FNNS_OP)
798 else if(cfn->regstatus == FNNS_REG)
804 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
805 (hub->dcppemu)?"++":"Dolda",
806 (hub->dcppemu)?"0.674":VERSION,
807 (tcpsock == NULL)?'P':'A',
809 confgetint("transfer", "slots")
812 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
813 qstrf(sk, "%s\x01$", buf);
814 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
815 qstrf(sk, "%s$", buf);
816 qstrf(sk, "%llu$|", sharesize);
819 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
824 if(!strcmp(cmd, "$Lock"))
826 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
827 } else if(!strcmp(cmd, "$Hello")) {
828 if(fn->state == FNN_HS)
830 qstrf(sk, "$Version 1,0091|");
831 qstrf(sk, "$GetNickList|");
833 fnetsetstate(fn, FNN_EST);
835 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
840 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
847 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
849 if((p = strchr(args, ' ')) != NULL)
854 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
856 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch");
857 if(!confgetint("dc", "hidedeflate"))
858 qstr(sk, " GetZBlock");
862 key = dcmakekey(args);
863 qstrf(sk, "$Key %s|", key);
865 hubhandleaction(sk, fn, cmd, args);
868 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
874 if(hub->nativename != NULL)
875 free(hub->nativename);
876 hub->nativename = sstrdup(args);
877 buf = icmbstowcs(args, hub->charset);
878 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
881 hubhandleaction(sk, fn, cmd, args);
884 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
890 if((nick = icmbstowcs(args, hub->charset)) == NULL)
892 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
893 fnetaddpeer(fn, nick, nick);
895 hubhandleaction(sk, fn, cmd, args);
898 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
901 struct fnetpeer *peer;
905 if((nick = icmbstowcs(args, hub->charset)) == NULL)
907 if((peer = fnetfindpeer(fn, nick)) != NULL)
910 hubhandleaction(sk, fn, cmd, args);
913 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
918 struct fnetpeer *peer;
921 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
922 peer->flags.b.delete = 1;
923 while((p = strstr(args, "$$")) != NULL)
926 if((buf = icmbstowcs(args, hub->charset)) != NULL)
928 if((peer = fnetfindpeer(fn, buf)) == NULL)
929 peer = fnetaddpeer(fn, buf, buf);
931 peer->flags.b.delete = 0;
933 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
938 hubhandleaction(sk, fn, cmd, args);
941 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
946 struct fnetpeer *peer;
949 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
950 peer->flags.b.op = 0;
951 while((p = strstr(args, "$$")) != NULL)
954 if((buf = icmbstowcs(args, hub->charset)) != NULL)
956 if((peer = fnetfindpeer(fn, buf)) != NULL)
957 peer->flags.b.op = 1;
962 hubhandleaction(sk, fn, cmd, args);
965 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
968 wchar_t *buf, *wp, *wp2;
970 struct fnetpeer *peer;
975 if(strncmp(p, "$ALL ", 5))
978 if((p2 = strchr(p, ' ')) == NULL)
981 if((buf = icmbstowcs(p, hub->charset)) == NULL)
983 if((peer = fnetfindpeer(fn, buf)) == NULL)
984 peer = fnetaddpeer(fn, buf, buf);
987 if((p2 = strstr(p, "$ $")) == NULL)
990 if((buf = icmbstowcs(p, hub->charset)) == NULL)
992 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
994 buf[wcslen(buf) - 1] = L'\0';
996 if((wp2 = wcschr(wp, L' ')) != NULL)
999 fnetpeersetstr(peer, L"dc-client", wp);
1003 if((wp2 = wcschr(wp, L',')) != NULL)
1007 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
1008 fnetpeersetstr(peer, abuf, wp + 2);
1010 } while(wp2 != NULL);
1013 fnetpeersetstr(peer, L"descr", buf);
1016 if((p2 = strchr(p, '$')) == NULL)
1019 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1021 fnetpeersetstr(peer, L"dc-speed", buf);
1024 if((p2 = strchr(p, '$')) == NULL)
1027 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1029 fnetpeersetstr(peer, L"email", buf);
1034 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1035 hubhandleaction(sk, fn, cmd, args);
1038 /* I do not implement the fully in that I do not disconnect from the
1039 * old hub. I do this since I believe that if the hub owner really
1040 * wants to get rid of us, then it is his responsibility to disconnect
1042 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1045 struct fnetnode *newfn;
1049 if(strchr(args, ':') == NULL)
1051 args = strcpy(smalloc(strlen(args) + 5), args);
1052 strcat(args, ":411");
1057 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
1059 linkfnetnode(newfn);
1062 hubhandleaction(sk, fn, cmd, args);
1067 static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
1072 if(node->parent == NULL)
1074 if(node->parent == shareroot)
1076 if((buf = icwcstombs(node->name, charset)) == NULL)
1079 *retlen = strlen(buf);
1082 if((buf2 = icwcstombs(node->name, charset)) == NULL)
1084 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
1089 len2 = strlen(buf2);
1090 buf = srealloc(buf, len + 1 + len2 + 1);
1092 strcpy(buf + len, buf2);
1093 buf[len + len2] = 0;
1096 *retlen = len + len2;
1102 * This is the main share searching function for Direct Connect
1103 * peers. Feel free to optimize it if you feel the need for it. I
1104 * haven't ever seen it take any noticable CPU time anyway, so I
1105 * haven't felt that need.
1107 * It may feel dubious to just return the directory when all terms are
1108 * satisfied rather than all the files in it, but it really benefits
1109 * everyone: Less cycles used for us, less UDP squelching for active
1110 * searchers, and less bandwidth waste for hubs when serving passive
1113 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1118 char *prefix, *infix, *postfix, *buf, *buf2;
1120 struct sockaddr_in addr;
1121 struct sharecache *node;
1122 int minsize, maxsize;
1125 int termnum, satisfied, skipcheck;
1126 int level, tersat[32];
1127 wchar_t *terms[32], *lname;
1131 if((p = strchr(args, ' ')) == NULL)
1135 memset(terms, 0, sizeof(terms));
1136 prefix = infix = postfix = NULL;
1140 if(!strncmp(args, "Hub:", 4))
1142 if(!strcmp(cmd, "$MultiSearch"))
1144 if(!strcmp(args + 4, hub->nativenick))
1146 prefix = sprintf2("$SR %s ", hub->nativenick);
1147 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1148 postfix = sprintf2(" (%s)\005%s|", formatsockpeer(hub->sk), args + 4);
1152 if((p2 = strchr(args, ':')) == NULL)
1155 addr.sin_family = AF_INET;
1156 if(!inet_aton(args, &addr.sin_addr))
1158 addr.sin_port = htons(atoi(p2));
1159 prefix = sprintf2("$SR %s ", hub->nativenick);
1160 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1161 postfix = sprintf2(" (%s)|", formatsockpeer(hub->sk));
1162 dsk = netdgramconn(udpsock, (struct sockaddr *)&addr, sizeof(addr));
1165 minsize = maxsize = -1;
1174 if((*(p++) == 'T') && (minsize == 0))
1181 if((p2 = strchr(p, '?')) == NULL)
1196 if((*p2 == 0) || (*p2 == '$'))
1204 if(!dotth && !strncmp(p, "TTH:", 4))
1207 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1212 memcpy(hashtth, buf, 24);
1215 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL) {
1216 wcslower(terms[termnum]);
1228 node = shareroot->child;
1230 for(i = 0; i < termnum; i++)
1236 if(node->f.b.type == FILE_REG)
1238 if((minsize >= 0) && (node->size < minsize))
1240 if((maxsize >= 0) && (node->size > maxsize))
1243 if(!skipcheck && dotth)
1245 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1250 lname = wcslower(swcsdup(node->name));
1251 for(i = 0; i < termnum; i++)
1255 if(wcsstr(lname, terms[i]))
1259 } else if(node->child == NULL) {
1265 if(!skipcheck && (satisfied == termnum))
1267 /* Use DCCHARSET in $Get paths until further researched... */
1268 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
1270 if(node->f.b.hastth)
1272 buf2 = base32encode(node->hashtth, 24);
1273 qstrf(dsk, "%s%s\005%ji%sTTH:%.39s%s", prefix, buf, (intmax_t)node->size, infix, buf2, postfix);
1276 qstrf(dsk, "%s%s\005%ji%s%s%s", prefix, buf, (intmax_t)node->size, infix, hub->nativename, postfix);
1281 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1283 while(node->next == NULL)
1285 if((node = node->parent) == shareroot)
1289 if(node == shareroot)
1291 for(i = 0; i < termnum; i++)
1293 if(tersat[i] >= level)
1306 hubhandleaction(sk, fn, cmd, args);
1317 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1321 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1325 struct sockaddr_in addr;
1328 if((p = strchr(args, ' ')) == NULL)
1331 if(strcmp(args, hub->nativenick))
1333 addr.sin_family = AF_INET;
1335 if((p = strchr(args, ':')) == NULL)
1338 addr.sin_port = htons(atoi(p));
1339 if(!inet_aton(args, &addr.sin_addr))
1341 putsock(netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn));
1343 hubhandleaction(sk, fn, cmd, args);
1346 static void sendctm(struct socket *sk, char *nick)
1348 struct sockaddr *addr;
1353 if(lstgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
1355 if(addr->sa_family == AF_INET)
1356 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1358 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1362 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1368 if((p = strchr(args, ' ')) == NULL)
1371 if(strcmp(p, hub->nativenick))
1374 expectpeer(args, fn);
1375 hubhandleaction(sk, fn, cmd, args);
1378 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1381 struct fnetnode *node;
1386 for(node = fnetnodes; node != NULL; node = node->next)
1388 if(node->state == FNN_EST)
1391 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1392 hubhandleaction(sk, fn, cmd, args);
1395 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1402 if((p2 = strchr(p, ' ')) == NULL)
1406 if((p2 = strchr(p, ' ')) == NULL)
1409 if(strcmp(p, "From:"))
1412 if((p2 = strstr(p, " $")) == NULL)
1416 hubrecvchat(hub->sk, fn, p, p2);
1417 hubhandleaction(sk, fn, cmd, args);
1420 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1424 char *nick, *filename, *hubname;
1429 wchar_t *wnick, *wfile;
1433 if((p2 = strchr(p, ' ')) == NULL)
1438 if((p2 = strchr(p, 5)) == NULL)
1442 if((p2 = strchr(p, ' ')) == NULL)
1445 size = strtoll(p, NULL, 10);
1447 if((p2 = strchr(p, '/')) == NULL)
1452 if((p2 = strchr(p, 5)) == NULL)
1456 if((p2 = strstr(p, " (")) == NULL)
1459 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
1461 /* Use DCCHARSET in $Get paths until further researched... */
1462 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
1467 sr = newsrchres(&dcnet, wfile, wnick);
1468 if(sr->peernick != NULL)
1470 sr->peernick = swcsdup(wnick);
1475 if(!strncmp(hubname, "TTH:", 4))
1477 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1480 sr->hash = newhash(L"TTH", 24, buf);
1484 getfnetnode(sr->fn = fn);
1487 hubhandleaction(sk, fn, cmd, args);
1490 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1492 /* Do nothing for now. */
1495 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1502 pw = wpfind(fn->args, L"password");
1503 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
1508 qstrf(sk, "$MyPass %s|", mbspw);
1510 fn->regstatus = FNNS_REG;
1511 hubhandleaction(sk, fn, cmd, args);
1514 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1519 fn->regstatus = FNNS_OP;
1520 hubhandleaction(sk, fn, cmd, args);
1523 static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1529 size_t arrsize, arrdata;
1532 if(hub->supports != NULL)
1534 for(i = 0; hub->supports[i] != NULL; i++)
1535 free(hub->supports[i]);
1536 free(hub->supports);
1539 arrsize = arrdata = 0;
1543 if((p2 = strchr(p, ' ')) != NULL)
1547 addtobuf(arr, sstrdup(p));
1548 } while((p = p2) != NULL);
1549 addtobuf(arr, NULL);
1550 hub->supports = arr;
1553 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1555 struct dcexppeer *expect;
1558 if(peer->nativename != NULL)
1559 free(peer->nativename);
1560 peer->nativename = sstrdup(args);
1561 if(peer->wcsname != NULL)
1562 free(peer->wcsname);
1563 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
1570 for(expect = expected; expect != NULL; expect = expect->next)
1572 if(!strcmp(expect->nick, args))
1579 hub = expect->fn->data;
1580 peer->fn = expect->fn;
1581 getfnetnode(peer->fn);
1582 peer->dcppemu = hub->dcppemu;
1583 freeexppeer(expect);
1588 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1592 struct transfer *transfer;
1594 if((p = strchr(args, ' ')) == NULL)
1597 if(!strcmp(args, "Upload"))
1599 if(!strcmp(args, "Download"))
1603 if((peer->transfer == NULL) || (mydir != peer->direction))
1608 if(peer->direction == TRNSD_DOWN)
1611 if(peer->wcsname == NULL)
1616 peer->direction = mydir;
1617 if(peer->direction == TRNSD_UP)
1619 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1624 transfer = newupload(peer->fn, &dcnet, peer->wcsname, (peer->trpipe = mktrpipe(peer))->back);
1626 if((transfer = finddownload(peer->wcsname)) == NULL)
1631 transferattach(transfer, (peer->trpipe = mktrpipe(peer))->back);
1632 transfersetstate(transfer, TRNS_HS);
1634 transfersetnick(transfer, peer->wcsname);
1635 peer->transfer = transfer;
1636 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
1639 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1640 if(peer->key != NULL)
1641 qstrf(sk, "$Key %s|", peer->key);
1642 if(peer->direction == TRNSD_DOWN)
1647 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1650 struct transfer *transfer;
1652 if((p = strchr(args, ' ')) == NULL)
1655 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1657 key = dcmakekey(args);
1660 if(peer->wcsname == NULL)
1669 if((transfer = finddownload(peer->wcsname)) == NULL)
1671 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1676 peer->direction = TRNSD_UP;
1677 transfer = newupload(peer->fn, &dcnet, peer->wcsname, (peer->trpipe = mktrpipe(peer))->back);
1679 peer->direction = TRNSD_DOWN;
1680 transferattach(transfer, (peer->trpipe = mktrpipe(peer))->back);
1681 transfersetstate(transfer, TRNS_HS);
1683 transfersetnick(transfer, peer->wcsname);
1684 peer->transfer = transfer;
1685 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
1686 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1687 qstrf(sk, "$Key %s|", key);
1690 if(peer->key != NULL)
1696 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1701 static void startdl(struct dcpeer *peer)
1703 if(peer->timeout != NULL)
1704 canceltimer(peer->timeout);
1705 peer->state = PEER_TRNS;
1706 transferstartdl(peer->transfer, peer->sk);
1707 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1708 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1711 static void startul(struct dcpeer *peer)
1713 if(peer->timeout != NULL)
1714 canceltimer(peer->timeout);
1715 peer->state = PEER_TRNS;
1716 transferstartul(peer->transfer, peer->sk);
1717 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
1718 transwrite(peer->sk, peer);
1721 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1724 struct transfer *transfer;
1726 if(peer->transfer == NULL)
1731 size = strtoll(args, NULL, 10);
1732 if(peer->transfer->size != size)
1734 transfersetsize(peer->transfer, size);
1735 transfer = peer->transfer;
1737 resettransfer(transfer);
1738 trytransferbypeer(transfer->fnet, transfer->peerid);
1742 qstr(peer->sk, "$Send|");
1745 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1747 if(peer->fetchingtthl)
1749 peer->fetchingtthl = 0;
1754 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1756 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1757 resettransfer(peer->transfer);
1763 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1765 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1767 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1768 resettransfer(peer->transfer);
1781 {"MyList.DcLst", &hmlistname, updatehmlist},
1782 {"files.xml", &xmllistname, updatexmllist},
1783 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1787 static int openfilelist(char *name)
1792 for(i = 0; lists[i].name != NULL; i++)
1794 if(!strcmp(name, lists[i].name))
1798 if(lists[i].name == NULL)
1801 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1803 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1806 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1813 static struct sharecache *findbytth(char *tth32)
1817 struct sharecache *node;
1819 if((buf = base32decode(tth32, &buflen)) == NULL)
1826 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1828 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1835 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1837 struct sharecache *node;
1844 if((p2 = strchr(p, sep)) != NULL)
1846 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1853 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1858 struct sharecache *node;
1859 struct socket *lesk;
1863 if(peer->transfer == NULL)
1868 if((p = strchr(args, '$')) == NULL)
1874 if((offset = (strtoll(p, NULL, 10) - 1)) < 0)
1879 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1881 qstr(sk, "$Error Could not send file list|");
1884 } else if(fd >= 0) {
1885 if((buf2 = nmdc2path(args, DCCHARSET)) != NULL) {
1886 transfersetpath(peer->transfer, buf2);
1889 peer->transfer->flags.b.minislot = 1;
1893 /* Use DCCHARSET in $Get paths until further researched... */
1894 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1896 qstrf(sk, "$Error File not in share|");
1900 if((fd = opensharecache(node)) < 0)
1902 qstrf(sk, "$Error %s|", strerror(errno));
1906 buf = getfspath(node);
1907 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1908 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1910 transfersetpath(peer->transfer, buf2);
1913 if(fstat(fd, &sb) < 0)
1916 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1917 qstrf(sk, "$Error|");
1921 if(sb.st_size < 65536)
1922 peer->transfer->flags.b.minislot = 1;
1923 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1925 qstr(sk, "$MaxedOut|");
1929 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1932 qstrf(sk, "$Error Offset out of range|");
1936 lesk = wrapsock(fd);
1937 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1939 qstrf(sk, "$FileLength %ji|", (intmax_t)peer->transfer->size);
1942 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1944 if(peer->transfer == NULL)
1949 if(peer->transfer->localend == NULL)
1958 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1963 size_t arrsize, arrdata;
1965 if(peer->supports != NULL)
1967 for(i = 0; peer->supports[i] != NULL; i++)
1968 free(peer->supports[i]);
1969 free(peer->supports);
1972 arrsize = arrdata = 0;
1976 if((p2 = strchr(p, ' ')) != NULL)
1980 addtobuf(arr, sstrdup(p));
1981 } while((p = p2) != NULL);
1982 addtobuf(arr, NULL);
1983 peer->supports = arr;
1986 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1990 off_t start, numbytes;
1991 char *charset, *buf;
1993 struct sharecache *node;
1995 struct socket *lesk;
1997 if(peer->transfer == NULL)
2003 if((p2 = strchr(p, ' ')) == NULL)
2009 start = strtoll(p, NULL, 10);
2011 if((p2 = strchr(p, ' ')) == NULL)
2017 numbytes = strtoll(p, NULL, 10);
2019 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
2022 /* Use DCCHARSET in $Get paths until further researched... */
2023 charset = DCCHARSET;
2024 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
2025 initcompress(peer, CPRS_ZLIB);
2026 if(((fd = openfilelist(p)) < 0) && (errno != 0))
2028 qstr(sk, "$Error Could not send file list|");
2030 } else if(fd >= 0) {
2031 if((buf2 = nmdc2path(args, charset)) != NULL) {
2032 transfersetpath(peer->transfer, buf2);
2035 peer->transfer->flags.b.minislot = 1;
2039 if((node = resdcpath(p, charset, '\\')) == NULL)
2041 qstr(sk, "$Error File not in cache|");
2044 if((fd = opensharecache(node)) < 0)
2046 qstrf(sk, "$Error %s|", strerror(errno));
2049 buf = getfspath(node);
2050 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2051 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2053 transfersetpath(peer->transfer, buf2);
2056 if(fstat(fd, &sb) < 0)
2059 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2060 qstr(sk, "$Error|");
2063 if(sb.st_size < 65536)
2064 peer->transfer->flags.b.minislot = 1;
2065 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2067 qstr(sk, "$MaxedOut|");
2070 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2073 qstr(sk, "$Error Offset out of range|");
2076 if((numbytes < 0) || (start + numbytes > sb.st_size))
2077 numbytes = sb.st_size - start;
2078 lesk = wrapsock(fd);
2079 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2081 qstrf(sk, "$Sending %ji|", (intmax_t)numbytes);
2085 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2089 off_t start, numbytes;
2090 struct sharecache *node;
2092 struct socket *lesk;
2096 if(peer->transfer == NULL)
2101 if((argv = parseadc(args)) == NULL)
2106 if(parrlen(argv) < 4)
2111 start = strtoll(argv[2], NULL, 10);
2112 numbytes = strtoll(argv[3], NULL, 10);
2115 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2117 qstr(sk, "$Error Could not send file list|");
2119 } else if(fd >= 0) {
2120 if((wbuf = adc2path(argv[1])) != NULL)
2121 transfersetpath(peer->transfer, wbuf);
2123 peer->transfer->flags.b.minislot = 1;
2127 if(!strncmp(argv[1], "TTH/", 4))
2129 if((node = findbytth(argv[1] + 4)) == NULL)
2131 qstr(sk, "$Error File not in cache|");
2135 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2137 qstr(sk, "$Error File not in cache|");
2141 if((fd = opensharecache(node)) < 0)
2143 qstrf(sk, "$Error %s|", strerror(errno));
2146 buf = getfspath(node);
2147 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2148 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2150 transfersetpath(peer->transfer, wbuf);
2153 if(!strcmp(argv[0], "file"))
2155 for(i = 4; argv[i] != NULL; i++)
2157 if(!strcmp(argv[i], "ZL1"))
2158 initcompress(peer, CPRS_ZLIB);
2160 if(fstat(fd, &sb) < 0)
2162 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2163 qstr(sk, "$Error|");
2166 if(sb.st_size < 65536)
2167 peer->transfer->flags.b.minislot = 1;
2168 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2169 qstr(sk, "$MaxedOut|");
2172 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2174 qstr(sk, "$Error Offset out of range|");
2177 if((numbytes < 0) || (start + numbytes > sb.st_size))
2178 numbytes = sb.st_size - start;
2179 lesk = wrapsock(fd);
2180 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2183 qstr(sk, "$ADCSND");
2184 sendadc(sk, "file");
2185 sendadc(sk, argv[1]);
2186 sendadcf(sk, "%ji", (intmax_t)start);
2187 sendadcf(sk, "%ji", (intmax_t)numbytes);
2188 if(peer->compress == CPRS_ZLIB)
2192 } else if(!strcmp(argv[0], "tthl")) {
2194 * XXX: Implement full TTHL support.
2196 * In the meantime, this is better than nothing, since it at
2197 * least allows fetching of the TTH root if it isn't already
2202 qstr(sk, "$Error no TTHL data for virtual files|");
2205 qstr(sk, "$ADCSND");
2206 sendadc(sk, "tthl");
2207 sendadc(sk, argv[1]);
2211 sockqueue(sk, node->hashtth, 24);
2213 qstr(sk, "$Error Namespace not implemented|");
2223 static void handletthl(struct dcpeer *peer)
2227 while(peer->inbufdata >= 24)
2229 pushtigertree(&peer->tth, peer->inbuf);
2230 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2231 peer->curread += 24;
2233 if(peer->curread >= peer->totalsize)
2235 if(peer->timeout == NULL)
2236 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2237 peer->state = PEER_CMD;
2238 synctigertree(&peer->tth);
2239 restigertree(&peer->tth, buf);
2240 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2245 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2248 off_t start, numbytes;
2250 if(peer->transfer == NULL)
2255 if((argv = parseadc(args)) == NULL)
2260 if(parrlen(argv) < 4)
2265 start = strtoll(argv[2], NULL, 10);
2266 numbytes = strtoll(argv[3], NULL, 10);
2267 if(!strcmp(argv[0], "tthl"))
2269 if((start != 0) || (numbytes % 24 != 0))
2271 /* Weird. Bail out. */
2275 if(peer->timeout != NULL)
2276 canceltimer(peer->timeout);
2277 peer->state = PEER_TTHL;
2278 peer->totalsize = numbytes;
2280 peer->fetchingtthl = 0;
2281 inittigertree(&peer->tth);
2283 } else if(!strcmp(argv[0], "file")) {
2284 if(start != peer->transfer->curpos)
2289 if(start + numbytes != peer->transfer->size)
2291 transfersetsize(peer->transfer, start + numbytes);
2296 if(peer->inbufdata > 0)
2298 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2299 peer->inbufdata = 0;
2302 /* We certainly didn't request this...*/
2311 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2315 if(peer->transfer == NULL)
2320 numbytes = strtoll(args, NULL, 10);
2321 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2323 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2328 if(peer->inbufdata > 0)
2330 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2331 peer->inbufdata = 0;
2337 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2342 hubhandleaction(sk, fn, cmd, args);
2346 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2352 static int hubreqconn(struct fnetpeer *peer)
2357 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2362 if((hub = peer->fn->data) == NULL)
2367 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
2368 return(1); /* Shouldn't happen, of course, but who knows... */
2371 sendctm(hub->sk, mbsnick);
2372 expectpeer(mbsnick, peer->fn);
2374 qstrf(hub->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2380 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2383 char *mbsstring, *mbsto;
2386 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
2391 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
2396 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2403 if(strchr(mbsstring, '|') != NULL)
2414 qstrf(hub->sk, "<%s> %s|", hub->nativenick, mbsstring);
2416 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2419 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2426 static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2428 int minl, maxl, minr, maxr, retmin, retmax;
2433 findsizelimit(sexpr->l, &minl, &maxl);
2434 findsizelimit(sexpr->r, &minr, &maxr);
2435 retmin = (minl > minr)?minl:minr;
2436 if((maxl != -1) && (maxr != -1))
2437 retmax = (maxl < maxr)?maxl:maxr;
2446 findsizelimit(sexpr->l, &minl, &maxl);
2447 findsizelimit(sexpr->r, &minr, &maxr);
2448 retmin = (minl < minr)?minl:minr;
2449 if((maxl == -1) || (maxr == -1))
2452 retmax = (maxl > maxr)?maxl:maxr;
2455 findsizelimit(sexpr->l, &minl, &maxl);
2456 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2460 } else if((minl == 0) && (maxl != -1)) {
2463 } else if((minl != 0) && (maxl == -1)) {
2466 } else { /* This would yield two seperate intervals, which DC cannot handle */
2472 retmax = sexpr->d.n - 1;
2475 retmin = sexpr->d.n;
2476 retmax = sexpr->d.n;
2479 retmin = sexpr->d.n + 1;
2493 static struct hash *findsehash(struct sexpr *sexpr)
2495 struct hash *h1, *h2;
2500 if((h1 = findsehash(sexpr->l)) != NULL)
2502 if((h1 = findsehash(sexpr->r)) != NULL)
2506 if((h1 = findsehash(sexpr->l)) == NULL)
2508 if((h2 = findsehash(sexpr->r)) == NULL)
2514 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2515 return(sexpr->d.hash);
2522 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2525 struct wcslist *list, *cur;
2526 char *sstr, *buf, *p;
2527 size_t sstrsize, sstrdata;
2528 struct sockaddr *name;
2530 int minsize, maxsize;
2534 if((fn->state != FNN_EST) || (hub->sk == NULL) || (hub->sk->state != SOCK_EST))
2536 list = findsexprstrs(srch->sexpr);
2537 findsizelimit(srch->sexpr, &minsize, &maxsize);
2538 hash = findsehash(srch->sexpr);
2539 if((minsize != 0) && (maxsize != -1))
2541 /* Choose either minsize or maxsize by trying to determine
2542 * which choice will be most restrictive. The result can be
2543 * approximative at best anyway, so don't try too hard... */
2544 if((50000000 - maxsize) > (minsize - 50000000))
2550 sstrsize = sstrdata = 0;
2551 if((hash != NULL) && (hash->len == 24))
2553 /* Prioritize hash searches above all else */
2554 bufcat(sstr, "F?T?0?9?TTH:", 12);
2555 buf = base32encode(hash->buf, hash->len);
2557 bufcat(sstr, buf, 39);
2562 sizebuf2(sstr, sstrdata + 32, 1);
2563 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
2564 } else if(maxsize != -1) {
2565 sizebuf2(sstr, sstrdata + 32, 1);
2566 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
2568 bufcat(sstr, "F?F?0?1?", 8);
2572 for(cur = list; cur != NULL; cur = cur->next)
2574 /* Use DCCHARSET in $Get paths until further researched... */
2575 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2577 /* Can't find anything anyway if the search expression
2578 * requires characters outside DC's charset. There's
2579 * nothing technically wrong with the search itself,
2580 * however, so return success. This should be
2581 * considered as an optimization. */
2588 addtobuf(sstr, '$');
2590 * It probably doesn't hurt if buf contains any extra
2591 * dollar signs - it will just result in extra search
2592 * terms, and the extraneous results will be filtered by
2593 * the search layer anyway. It hurts if it contains any
2594 * pipes, though, so let's sell them for money.
2596 for(p = buf; *p; p++)
2601 bufcat(sstr, buf, strlen(buf));
2605 /* Will match all files... :-/ */
2606 addtobuf(sstr, '.');
2612 if(sockgetremotename2(udpsock, hub->sk, &name, &namelen) < 0)
2614 flog(LOG_WARNING, "cannot get address of UDP socket");
2616 qstrf(hub->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2620 qstrf(hub->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2624 fn->lastsrch = time(NULL);
2632 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2633 static struct command hubcmds[] =
2635 {"$Lock", cc(cmd_lock)},
2636 {"$HubName", cc(cmd_hubname)},
2637 {"$Hello", cc(cmd_hello)},
2638 {"$Quit", cc(cmd_quit)},
2639 {"$NickList", cc(cmd_nicklist)},
2640 {"$OpList", cc(cmd_oplist)},
2641 {"$MyINFO", cc(cmd_myinfo)},
2642 {"$ForceMove", cc(cmd_forcemove)},
2643 {"$Search", cc(cmd_search), .limit = 100},
2644 {"$MultiSearch", cc(cmd_search), .limit = 50},
2645 {"$ConnectToMe", cc(cmd_connecttome), .limit = 200},
2646 {"$RevConnectToMe", cc(cmd_revconnecttome), .limit = 500},
2647 {"$GetNetInfo", cc(cmd_getnetinfo)},
2648 {"$To:", cc(cmd_to)},
2649 {"$SR", cc(cmd_sr)},
2650 {"$UserCommand", cc(cmd_usercommand)},
2651 {"$GetPass", cc(cmd_getpass)},
2652 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2653 {"$Supports", cc(cmd_hubsupports)},
2657 static struct command peercmds[] =
2659 {"$MyNick", cc(cmd_mynick)},
2660 {"$Lock", cc(cmd_peerlock)},
2661 {"$Direction", cc(cmd_direction)},
2662 {"$Key", cc(cmd_key)},
2663 {"$FileLength", cc(cmd_filelength)},
2664 {"$Error", cc(cmd_error)},
2665 {"$MaxedOut", cc(cmd_maxedout)},
2666 {"$Get", cc(cmd_get)},
2667 {"$Send", cc(cmd_send)},
2668 {"$Supports", cc(cmd_supports)},
2669 {"$GetBlock", cc(cmd_getblock)},
2670 {"$UGetBlock", cc(cmd_getblock)},
2671 {"$GetZBlock", cc(cmd_getblock)},
2672 {"$UGetZBlock", cc(cmd_getblock)},
2673 {"$ADCGET", cc(cmd_adcget)},
2674 {"$ADCSND", cc(cmd_adcsnd), .stop = 1},
2675 {"$Sending", cc(cmd_sending), .stop = 1},
2680 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2684 unsigned char outbuf[1024];
2688 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2690 if(sockqueueleft(peer->sk) > 0)
2692 if((buf = sockgetinbuf(peer->trpipe, &bufsize)) != NULL)
2694 if(peer->compress == CPRS_NONE)
2696 sockqueue(peer->sk, buf, bufsize);
2697 } else if(peer->compress == CPRS_ZLIB) {
2698 cstr = peer->cprsdata;
2699 cstr->next_in = buf;
2700 cstr->avail_in = bufsize;
2701 while(cstr->avail_in > 0)
2703 cstr->next_out = outbuf;
2704 cstr->avail_out = sizeof(outbuf);
2705 if((ret = deflate(cstr, 0)) != Z_OK)
2707 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2711 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2716 if(peer->state == PEER_SYNC)
2718 if(peer->compress == CPRS_ZLIB)
2720 cstr = peer->cprsdata;
2721 cstr->next_in = NULL;
2725 cstr->next_out = outbuf;
2726 cstr->avail_out = sizeof(outbuf);
2727 ret = deflate(cstr, Z_FINISH);
2728 if((ret != Z_OK) && (ret != Z_STREAM_END))
2730 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2734 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2735 } while(ret != Z_STREAM_END);
2741 if(peer->timeout == NULL)
2742 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2743 peer->state = PEER_CMD;
2745 transfersetstate(transfer, TRNS_HS);
2746 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2747 transfer->flags.b.minislot = 0;
2748 peer->sk->writecb = NULL;
2755 static void peerdetach(struct dcpeer *peer)
2757 CBUNREG(peer->transfer, trans_filterout, peer);
2758 closesock(peer->trpipe);
2759 quitsock(peer->trpipe);
2760 peer->trpipe = NULL;
2761 if(peer->transfer->dir == TRNSD_UP)
2762 peer->transfer->close = 1;
2763 else if(peer->transfer->dir == TRNSD_DOWN)
2764 resettransfer(peer->transfer);
2765 peer->transfer = NULL;
2768 static void transread(struct socket *sk, struct dcpeer *peer)
2773 if(sockqueueleft(peer->trpipe) < 0)
2775 if((buf = sockgetinbuf(sk, &bufsize)) != NULL)
2777 if(peer->transfer == NULL)
2783 sockqueue(peer->trpipe, buf, bufsize);
2786 if(peer->transfer->curpos >= peer->transfer->size)
2794 static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2796 struct transfer *transfer;
2798 if((transfer = peer->transfer) == NULL)
2807 static void transwrite(struct socket *sk, struct dcpeer *peer)
2809 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2811 if(peer->transfer == NULL)
2816 dctransgotdata(peer->transfer, peer);
2819 static void trpiperead(struct socket *sk, struct dcpeer *peer)
2821 dctransgotdata(peer->transfer, peer);
2824 static void trpipewrite(struct socket *sk, struct dcpeer *peer)
2826 transread(peer->sk, peer);
2829 static void trpipeerr(struct socket *sk, int errno, struct dcpeer *peer)
2831 peer->state = PEER_SYNC;
2832 dctransgotdata(peer->transfer, peer);
2834 if(peer->state != PEER_CMD) {
2839 static struct socket *mktrpipe(struct dcpeer *peer)
2845 sk->readcb = (void (*)(struct socket *, void *))trpiperead;
2846 sk->writecb = (void (*)(struct socket *, void *))trpipewrite;
2847 sk->errcb = (void (*)(struct socket *, int, void *))trpipeerr;
2851 static void udpread(struct socket *sk, void *data)
2853 char *buf, *p, *p2, *hashbuf;
2854 size_t buflen, hashlen;
2855 char *nick, *filename, *hubname;
2856 struct sockaddr_in hubaddr;
2857 struct sockaddr *addrbuf;
2860 struct fnetnode *fn, *myfn;
2863 wchar_t *wnick, *wfile;
2866 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2868 buf = srealloc(buf, buflen + 1);
2870 if(!strncmp(buf, "$SR ", 4))
2874 if((p2 = strchr(p, ' ')) == NULL)
2882 if((p2 = strchr(p, 5)) == NULL)
2889 if((p2 = strchr(p, ' ')) == NULL)
2895 size = strtoll(p, NULL, 10);
2897 if((p2 = strchr(p, '/')) == NULL)
2905 if((p2 = strchr(p, 5)) == NULL)
2912 if((p2 = strstr(p, " (")) == NULL)
2919 if((p2 = strchr(p, ':')) == NULL)
2925 hubaddr.sin_family = AF_INET;
2926 if(!inet_aton(p, &hubaddr.sin_addr))
2932 if((p2 = strchr(p, ')')) == NULL)
2938 hubaddr.sin_port = htons(atoi(p));
2939 /* Use DCCHARSET in $Get paths until further researched... */
2940 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
2947 if(!strncmp(hubname, "TTH:", 4))
2949 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2952 hash = newhash(L"TTH", 24, hashbuf);
2956 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2958 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2960 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2975 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2977 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL) && !sockpeeraddr(hub->sk, &addrbuf, NULL))
2979 if((hub->sk != NULL) && addreq(addrbuf, (struct sockaddr *)&hubaddr))
2992 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2997 sr = newsrchres(&dcnet, wfile, wnick);
2998 if(sr->peernick != NULL)
3000 sr->peernick = swcsdup(wnick);
3006 getfnetnode(sr->fn = myfn);
3015 static void hubread(struct socket *sk, struct fnetnode *fn)
3018 struct command *cmd;
3020 size_t datalen, cnlen;
3023 hub = (struct dchub *)fn->data;
3024 if(hub->queue.size > 1000)
3026 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3028 if(hub->inbufdata > 500000) /* Discard possible malicious data */
3030 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
3031 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
3034 hub->inbufdata += datalen;
3035 while((p - hub->inbuf < hub->inbufdata) && ((p2 = memchr(p, '|', hub->inbufdata - (p - hub->inbuf))) != NULL))
3038 for(cmd = hubcmds; cmd->handler != NULL; cmd++)
3040 cnlen = strlen(cmd->name);
3041 if(!strncmp(p, cmd->name, cnlen) && ((p[cnlen] == ' ') || (p[cnlen] == 0)))
3044 if((cmd->limit == 0) || (hub->queue.size < cmd->limit))
3045 newqcmd(&hub->queue, p);
3048 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
3051 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
3056 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
3062 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
3064 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
3069 if(hub == NULL) /* Not yet connected */
3074 if(hub->nativenick != NULL)
3075 free(hub->nativenick);
3076 hub->nativenick = buf;
3080 static struct dchub *newdchub(struct fnetnode *fn)
3087 new = smalloc(sizeof(*new));
3088 memset(new, 0, sizeof(*new));
3090 if(confgetint("dc", "dcppemu"))
3092 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3100 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3102 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3104 if(!havecharset(charset))
3112 new->charset = charset;
3114 new->charset = sstrdup(DCCHARSET);
3115 if(hubsetnick(fn, fn->mynick))
3116 fnetsetnick(fn, L"DoldaConnectUser-IN");
3117 /* IN as in Invalid Nick */
3121 static struct dcpeer *newdcpeer(struct socket *sk)
3125 new = smalloc(sizeof(*new));
3126 memset(new, 0, sizeof(*new));
3129 if(confgetint("dc", "dcppemu"))
3140 static void freedcpeer(struct dcpeer *peer)
3143 struct qcommand *qcmd;
3147 if(peer->next != NULL)
3148 peer->next->prev = peer->prev;
3149 if(peer->prev != NULL)
3150 peer->prev->next = peer->next;
3151 if(peer->transfer != NULL)
3153 if(peer->timeout != NULL)
3154 canceltimer(peer->timeout);
3155 if(peer->sk->data == peer)
3156 peer->sk->data = NULL;
3157 peer->sk->readcb = NULL;
3158 peer->sk->writecb = NULL;
3159 peer->sk->errcb = NULL;
3162 if(peer->supports != NULL)
3164 for(i = 0; peer->supports[i] != NULL; i++)
3165 free(peer->supports[i]);
3166 free(peer->supports);
3168 if(peer->inbuf != NULL)
3170 if(peer->key != NULL)
3172 if(peer->wcsname != NULL)
3173 free(peer->wcsname);
3174 if(peer->nativename != NULL)
3175 free(peer->nativename);
3176 if(peer->charset != NULL)
3177 free(peer->charset);
3178 if(peer->fn != NULL)
3179 putfnetnode(peer->fn);
3180 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3186 static void hubconnect(struct fnetnode *fn, struct socket *sk)
3190 sk->readcb = (void (*)(struct socket *, void *))hubread;
3191 sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3192 fn->data = hub = newdchub(fn);
3194 getsock(hub->sk = sk);
3198 static void hubdestroy(struct fnetnode *fn)
3202 struct qcommand *qcmd;
3204 hub = (struct dchub *)fn->data;
3206 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3208 if(hub->supports != NULL)
3210 for(i = 0; hub->supports[i] != NULL; i++)
3211 free(hub->supports[i]);
3212 free(hub->supports);
3214 if(hub->nativename != NULL)
3215 free(hub->nativename);
3216 if(hub->nativenick != NULL)
3217 free(hub->nativenick);
3218 if(hub->charset != NULL)
3220 if(hub->inbuf != NULL)
3225 static void hubkill(struct fnetnode *fn)
3229 hub = (struct dchub *)fn->data;
3233 static struct fnet dcnet =
3236 .connect = hubconnect,
3237 .destroy = hubdestroy,
3239 .setnick = hubsetnick,
3240 .reqconn = hubreqconn,
3241 .sendchat = hubsendchat,
3242 .search = hubsearch,
3245 static void peerread(struct socket *sk, struct dcpeer *peer)
3248 size_t datalen, cnlen;
3249 struct command *cmd;
3251 if(peer->state == PEER_CMD) {
3252 if((peer->queue.size > 50) || (peer->inbufdata > 65536))
3254 } else if(peer->state == PEER_TTHL) {
3258 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3260 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3261 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3263 peer->inbufdata += datalen;
3264 if(peer->state == PEER_CMD)
3267 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3270 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3272 cnlen = strlen(cmd->name);
3273 if(!strncmp(peer->inbuf, cmd->name, cnlen) && ((peer->inbuf[cnlen] == ' ') || (peer->inbuf[cnlen] == 0)))
3276 if((cmd->limit == 0) || (peer->queue.size < cmd->limit))
3277 newqcmd(&peer->queue, peer->inbuf);
3278 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3281 peer->state = PEER_STOP;
3285 } else if(peer->state == PEER_TTHL) {
3290 static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3295 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3297 struct dcpeer *peer;
3306 peer = newdcpeer(sk);
3309 peer->dcppemu = hub->dcppemu;
3310 sk->readcb = (void (*)(struct socket *, void *))peerread;
3311 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3313 socksettos(sk, confgetint("fnet", "fnptos"));
3314 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3319 static void peeraccept(struct lport *lp, struct socket *newsk, void *data)
3321 struct dcpeer *peer;
3323 peer = newdcpeer(newsk);
3325 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3326 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3328 socksettos(newsk, confgetint("fnet", "fnptos"));
3329 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3332 static void updatehmlist(void)
3334 int i, lev, ic, ret;
3335 struct sharecache *node;
3336 char *buf, *buf2, numbuf[32];
3337 size_t bufsize, bufdata;
3342 buf = smalloc(bufsize = 65536);
3343 node = shareroot->child;
3348 /* Use DCCHARSET in $Get paths until further researched... */
3349 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3351 for(i = 0; i < lev; i++)
3353 bufcat(buf, buf2, strlen(buf2));
3355 if(node->f.b.type == FILE_REG)
3358 sprintf(numbuf, "%ji", (intmax_t)node->size);
3359 bufcat(buf, numbuf, strlen(numbuf));
3366 if((node->child != NULL) && !ic)
3370 } else if(node->next != NULL) {
3373 while(node->next == NULL)
3376 node = node->parent;
3377 if(node == shareroot)
3380 if(node == shareroot)
3385 if(hmlistname != NULL)
3390 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3391 if((fd = mkstemp(hmlistname)) < 0)
3393 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3397 out = fdopen(fd, "w");
3399 * I do not want to implement a good Huffman encoder, and it's not
3400 * like Huffman encoding actually yields any impressive results
3401 * for DC file lists anyway, so I'll just output a bogus
3402 * tree. Implement a good encoder if you want to.
3404 fwrite("HE3\r\0", 1, 5, out);
3405 fwrite(&bufdata, 4, 1, out); /* XXX: Endian unsafe */
3407 fwrite(&ibuf, 2, 1, out);
3409 for(i = 0; i < 256; i++)
3411 fwrite(&i, 1, 1, out);
3412 fwrite(&ibuf, 1, 1, out);
3414 for(i = 0; i < 256; i++)
3415 fwrite(&i, 1, 1, out);
3416 for(buf2 = buf; bufdata > 0;)
3418 if((ret = fwrite(buf2, 1, bufdata, out)) < 0)
3420 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3431 static struct xmlent
3438 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3442 static wchar_t *escapexml(wchar_t *src)
3444 static wchar_t *buf = NULL;;
3447 size_t bufsize, bufdata;
3453 bufsize = bufdata = 0;
3454 for(; *src != L'\0'; src++)
3457 if((c > 0) && (c < 32))
3459 bufcat(buf, L"&#", 2);
3460 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3461 bufcat(buf, nbuf, ret);
3462 addtobuf(buf, L';');
3464 for(ent = entities; ent->ent != NULL; ent++)
3468 bufcat(buf, ent->ent, wcslen(ent->ent));
3472 if(ent->ent == NULL)
3473 addtobuf(buf, *src);
3476 addtobuf(buf, L'\0');
3480 static void updatexmllist(void)
3484 char cidbuf[14], *namebuf;
3486 struct sharecache *node;
3488 if(xmllistname != NULL)
3490 unlink(xmllistname);
3493 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3494 if((fd = mkstemp(xmllistname)) < 0)
3496 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3501 if((fs = fdopen(fd, "w")) == NULL)
3503 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3504 unlink(xmllistname);
3510 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3511 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3512 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3514 if(confgetint("dc", "dcppemu"))
3515 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3517 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
3519 node = shareroot->child;
3523 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3525 for(i = 0; i < lev; i++)
3527 if(node->child != NULL)
3529 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3534 fprintf(fs, "<File Name=\"%s\" Size=\"%ji\"", namebuf, (intmax_t)node->size);
3535 if(node->f.b.hastth)
3537 hashbuf = base32encode(node->hashtth, 24);
3538 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3541 fprintf(fs, "/>\r\n");
3543 while(node->next == NULL)
3545 node = node->parent;
3546 if(node == shareroot)
3551 for(i = 0; i < lev; i++)
3553 fprintf(fs, "</Directory>\r\n");
3556 if(node == shareroot)
3562 if(confgetint("dc", "dcppemu"))
3563 fprintf(fs, "</FileListing>");
3565 fprintf(fs, "</FileListing>\r\n");
3569 static void updatexmlbz2list(void)
3578 if(xmllistname == NULL)
3580 if((in = fopen(xmllistname, "r")) == NULL)
3582 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3585 if(xmlbz2listname != NULL)
3587 unlink(xmlbz2listname);
3588 free(xmlbz2listname);
3590 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3591 if((fd = mkstemp(xmlbz2listname)) < 0)
3593 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3594 free(xmlbz2listname);
3595 xmlbz2listname = NULL;
3599 if((real = fdopen(fd, "w")) == NULL)
3601 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3603 unlink(xmlbz2listname);
3604 free(xmlbz2listname);
3605 xmlbz2listname = NULL;
3609 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3612 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3614 unlink(xmlbz2listname);
3615 free(xmlbz2listname);
3616 xmlbz2listname = NULL;
3622 bufdata = fread(buf, 1, sizeof(buf), in);
3623 BZ2_bzWrite(&err, out, buf, bufdata);
3626 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3630 static void listtimercb(int cancelled, void *uudata)
3632 listwritetimer = NULL;
3637 static void updatelists(int now)
3639 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3643 if(listwritetimer == NULL)
3644 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
3647 if(listwritetimer != NULL)
3648 canceltimer(listwritetimer);
3654 static int shareupdate(unsigned long long uusharesize, void *data)
3660 static char *quotestr(char *str)
3664 size_t bufsize, bufdata;
3666 static char *enc = NULL;
3667 size_t encsize, encdata;
3670 bufsize = bufdata = 0;
3671 for(p = (unsigned char *)str; *p; p++)
3674 bufcat(buf, "\\b", 2);
3676 bufcat(buf, "\\t", 2);
3678 bufcat(buf, "\\n", 2);
3680 bufcat(buf, "\\r", 2);
3682 bufcat(buf, "\\\\", 2);
3686 bprintf(buf, "\\x%02x", *p);
3692 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3694 enc = icwcstombs(wbuf, NULL);
3699 encsize = encdata = 0;
3700 for(p = buf; *p; p++) {
3704 bprintf(buf, "\\x%x", *p);
3711 static void logunimpl(char *list, char *cmd, char *args)
3715 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3717 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3722 fputs(quotestr(cmd), log);
3726 fputs(quotestr(args), log);
3732 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3735 struct command *cmd;
3737 if((p = strchr(qcmd->string, ' ')) != NULL)
3739 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3741 if(!strcmp(cmd->name, qcmd->string))
3744 if(cmd->handler != NULL)
3746 cmd->handler(sk, data, qcmd->string, p);
3747 } else if(confgetint("dc", "logunimpl")) {
3748 if(cmdlist == hubcmds)
3749 logunimpl("hub", qcmd->string, p);
3750 else if(cmdlist == peercmds)
3751 logunimpl("peer", qcmd->string, p);
3753 logunimpl("other?!", qcmd->string, p);
3757 static int run(void)
3759 struct fnetnode *fn, *nextfn;
3761 struct dcpeer *peer, *nextpeer;
3762 struct qcommand *qcmd;
3767 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3770 if(fn->fnet != &dcnet)
3772 if(fn->data == NULL)
3774 hub = (struct dchub *)fn->data;
3775 while((quota > 0) && ((qcmd = ulqcmd(&hub->queue)) != NULL))
3777 if(*qcmd->string == '$')
3779 if((hub->sk != NULL) && (hub->sk->state == SOCK_EST))
3780 dispatchcommand(qcmd, hubcmds, hub->sk, fn);
3781 } else if(*qcmd->string != 0) {
3782 hubrecvchat(hub->sk, fn, NULL, qcmd->string);
3788 if(hub->queue.size < 1000)
3789 hubread(hub->sk, fn);
3794 for(peer = peers; peer != NULL; peer = peer->next)
3796 while(!peer->close && (quota > 0) && ((qcmd = ulqcmd(&peer->queue)) != NULL))
3798 if(peer->timeout != NULL)
3799 canceltimer(peer->timeout);
3800 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3801 if(*qcmd->string == '$')
3802 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3807 if((peer->queue.size < 50) && (peer->inbufdata < 500000))
3808 peerread(peer->sk, peer);
3812 for(peer = peers; peer != NULL; peer = nextpeer)
3814 nextpeer = peer->next;
3821 static void preinit(int hup)
3828 static int updateudpport(struct configvar *var, void *uudata)
3830 struct sockaddr_in addr;
3831 struct socket *newsock;
3833 memset(&addr, 0, sizeof(addr));
3834 addr.sin_family = AF_INET;
3835 addr.sin_port = htons(var->val.num);
3836 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3838 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3841 newsock->readcb = udpread;
3848 static int updatetcpport(struct configvar *var, void *uudata)
3850 struct sockaddr_in addr;
3851 struct lport *newsock;
3853 memset(&addr, 0, sizeof(addr));
3854 addr.sin_family = AF_INET;
3855 addr.sin_port = htons(var->val.num);
3856 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3857 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3859 closelport(tcpsock);
3864 static int init(int hup)
3866 struct sockaddr_in addr;
3870 GCBREG(sharechangecb, shareupdate, NULL);
3874 closelport(tcpsock);
3875 addr.sin_family = AF_INET;
3876 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3877 addr.sin_port = htons(confgetint("dc", "udpport"));
3878 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3880 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3883 udpsock->readcb = udpread;
3884 addr.sin_port = htons(confgetint("dc", "tcpport"));
3885 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3886 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3887 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3888 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3889 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3894 static void terminate(void)
3896 if(hmlistname != NULL)
3901 if(xmllistname != NULL)
3903 unlink(xmllistname);
3906 if(xmlbz2listname != NULL)
3908 unlink(xmlbz2listname);
3909 free(xmlbz2listname);
3913 static struct configvar myvars[] =
3915 /** Specifies the share description reported to other DC users. */
3916 {CONF_VAR_STRING, "desc", {.str = L""}},
3917 /** Specifies the speed reported to other DC users. Normal values
3918 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3919 * LAN(T1) or LAN(T3)*/
3920 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3921 /** The e-mail address to report to other DC users. */
3922 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3923 /** Specifies a specific UDP port to use for DC search results. If
3924 * left unspecified, a port is allocated dynamically. Useful for
3925 * NAT routers (see also the net.visibleipv4 address for those
3927 {CONF_VAR_INT, "udpport", {.num = 0}},
3928 /** Specifies a specific TCP port to use for DC peer
3929 * connections. If left unspecified, a port is allocated
3930 * dynamically. Useful for NAT routers (see also the
3931 * net.visibleipv4 address for those cases). */
3932 {CONF_VAR_INT, "tcpport", {.num = 0}},
3933 /** If set to true, doldacond will do its best to emulate DC++
3934 * (currently v0.674). This should be left off if at all possible,
3935 * since turning it on will violate the rules of most hubs and
3936 * thus give hub owners an actual reason to kick you if it is
3937 * detected. It might be needed for some of the more bone-headed
3938 * hub owners, though. Note that DC++ emulation can also be turned
3939 * on or off for individual hubs, overriding this setting. */
3940 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
3941 /** Use for debugging. If set to true, doldacond will log all
3942 * unknown commands it receives, and their arguments, to
3943 * /tmp/dc-unimpl. */
3944 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
3945 /** If set to true, doldacond will hide its support for deflate
3946 * compression of transfers from other clients, so that they will
3947 * not request compressed uploads. Compressed transfers may
3948 * consume a non-trivial amount of CPU time on slower machines. */
3949 {CONF_VAR_BOOL, "hidedeflate", {.num = 0}},
3953 static struct module me =
3962 .terminate = terminate,