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);
164 static int trdestroycb(struct transfer *transfer, struct dcpeer *peer);
166 static int reservedchar(unsigned char c)
168 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
171 /* Oh, how I despise having to do this... */
172 static char *dcmakekey(char *lock)
178 buf = smalloc(strlen(lock));
181 for(i = 0; lock[i]; i++)
183 buf[i] = lock[i] ^ save;
184 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
186 if((i != 0) && reservedchar(buf[i]))
191 buf[0] ^= buf[i - 1];
192 if(reservedchar(buf[0]))
196 key = smalloc(len + 1);
198 for(i = 0; lock[i] != 0; i++)
200 if(reservedchar(buf[i]))
201 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
203 key[offset++] = buf[i];
210 static wchar_t *nmdc2path(char *nmdc, char *charset)
214 if((ret = icmbstowcs(nmdc, charset)) == NULL)
216 for(p = ret; *p != L'\0'; p++) {
223 static char *path2nmdc(wchar_t *path, char *charset)
227 if((ret = icwcstombs(path, charset)) == NULL)
229 for(p = ret; *p; p++) {
236 static wchar_t *adc2path(char *adc)
238 return(icmbstowcs(adc, "UTF-8"));
241 static char *path2adc(wchar_t *path)
243 return(icwcstombs(path, "UTF-8"));
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 != ' ')
560 if((*args == ' ') || (*args == 0))
563 addtobuf(retbuf, buf);
565 bufsize = bufdata = 0;
568 } else if(*args == '\\') {
571 addtobuf(buf, *args);
580 addtobuf(retbuf, NULL);
583 } else if((*args == 's') || (*args == ' ')) {
585 } else if(*args == 'n') {
587 } else if(*args == '\\') {
597 addtobuf(retbuf, NULL);
601 /* Macros useful in command handlers */
602 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
603 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
604 #define qstrf(sk, strandargs...) \
607 if((__buf__ = sprintf2(strandargs)) != NULL) { \
608 sockqueue(sk, __buf__, strlen(__buf__)); \
613 static char *tr(char *str, char *trans)
617 for(; *trans; trans += 2)
619 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
625 static char *getadcid(struct dcpeer *peer)
632 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
634 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
636 buf = base32encode(peer->transfer->hash->buf, 24);
637 ret = sprintf2("TTH/%.39s", buf);
640 ret = path2adc(peer->transfer->path);
646 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
648 if(!wcscmp(cmd, L"resume"))
652 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
655 transfer->curpos = wcstoll(arg, NULL, 10);
664 static void sendmynick(struct dcpeer *peer)
670 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
672 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
675 static void sendpeerlock(struct dcpeer *peer)
678 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
680 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
683 static void sendsupports(struct dcpeer *peer)
686 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
688 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF");
689 if(!confgetint("dc", "hidedeflate"))
690 qstr(peer->sk, " GetZBlock ZLIG");
695 static void requestfile(struct dcpeer *peer)
699 if(peer->transfer->size == -1)
701 /* Use DCCHARSET for $Get paths until further researched... */
702 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
704 transferseterror(peer->transfer, TRNSE_NOTFOUND);
708 /* The transfer will be restarted later from
709 * cmd_filelength when it detects that the sizes
711 qstrf(peer->sk, "$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));
746 if(supports(peer, "adcget"))
748 qstr(peer->sk, "$ADCGET");
749 sendadc(peer->sk, "file");
750 if((buf = getadcid(peer)) == NULL)
752 transferseterror(peer->transfer, TRNSE_NOTFOUND);
756 sendadc(peer->sk, buf);
758 sendadcf(peer->sk, "%ji", (intmax_t)peer->transfer->curpos);
759 sendadcf(peer->sk, "%ji", (intmax_t)(peer->transfer->size - peer->transfer->curpos));
761 } else if(supports(peer, "xmlbzlist")) {
762 if((buf = path2nmdc(peer->transfer->path, "UTF-8")) == NULL)
764 transferseterror(peer->transfer, TRNSE_NOTFOUND);
768 qstrf(peer->sk, "$UGetBlock %ji %ji %s|", (intmax_t)peer->transfer->curpos, (intmax_t)(peer->transfer->size - peer->transfer->curpos), buf);
771 /* Use DCCHARSET for $Get paths until further researched... */
772 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
774 transferseterror(peer->transfer, TRNSE_NOTFOUND);
778 qstrf(peer->sk, "$Get %s$%ji|", buf, (intmax_t)peer->transfer->curpos + 1);
783 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
787 struct fnetnode *cfn;
791 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
792 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
793 qstrf(sk, "%s", buf);
795 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
797 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
799 if(cfn->regstatus == FNNS_OP)
801 else if(cfn->regstatus == FNNS_REG)
807 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
808 (hub->dcppemu)?"++":"Dolda",
809 (hub->dcppemu)?"0.674":VERSION,
810 (tcpsock == NULL)?'P':'A',
812 confgetint("transfer", "slots")
815 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
816 qstrf(sk, "%s\x01$", buf);
817 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
818 qstrf(sk, "%s$", buf);
819 qstrf(sk, "%llu$|", sharesize);
822 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
827 if(!strcmp(cmd, "$Lock"))
829 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
830 } else if(!strcmp(cmd, "$Hello")) {
831 if(fn->state == FNN_HS)
833 qstrf(sk, "$Version 1,0091|");
834 qstrf(sk, "$GetNickList|");
836 fnetsetstate(fn, FNN_EST);
838 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
843 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
850 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
852 if((p = strchr(args, ' ')) != NULL)
857 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
859 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch");
860 if(!confgetint("dc", "hidedeflate"))
861 qstr(sk, " GetZBlock");
865 key = dcmakekey(args);
866 qstrf(sk, "$Key %s|", key);
868 hubhandleaction(sk, fn, cmd, args);
871 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
877 if(hub->nativename != NULL)
878 free(hub->nativename);
879 hub->nativename = sstrdup(args);
880 buf = icmbstowcs(args, hub->charset);
881 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
884 hubhandleaction(sk, fn, cmd, args);
887 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
893 if((nick = icmbstowcs(args, hub->charset)) == NULL)
895 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
896 fnetaddpeer(fn, nick, nick);
898 hubhandleaction(sk, fn, cmd, args);
901 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
904 struct fnetpeer *peer;
908 if((nick = icmbstowcs(args, hub->charset)) == NULL)
910 if((peer = fnetfindpeer(fn, nick)) != NULL)
913 hubhandleaction(sk, fn, cmd, args);
916 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
921 struct fnetpeer *peer;
924 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
925 peer->flags.b.delete = 1;
926 while((p = strstr(args, "$$")) != NULL)
929 if((buf = icmbstowcs(args, hub->charset)) != NULL)
931 if((peer = fnetfindpeer(fn, buf)) == NULL)
932 peer = fnetaddpeer(fn, buf, buf);
934 peer->flags.b.delete = 0;
936 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
941 hubhandleaction(sk, fn, cmd, args);
944 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
949 struct fnetpeer *peer;
952 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
953 peer->flags.b.op = 0;
954 while((p = strstr(args, "$$")) != NULL)
957 if((buf = icmbstowcs(args, hub->charset)) != NULL)
959 if((peer = fnetfindpeer(fn, buf)) != NULL)
960 peer->flags.b.op = 1;
965 hubhandleaction(sk, fn, cmd, args);
968 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
971 wchar_t *buf, *wp, *wp2;
973 struct fnetpeer *peer;
978 if(strncmp(p, "$ALL ", 5))
981 if((p2 = strchr(p, ' ')) == NULL)
984 if((buf = icmbstowcs(p, hub->charset)) == NULL)
986 if((peer = fnetfindpeer(fn, buf)) == NULL)
987 peer = fnetaddpeer(fn, buf, buf);
990 if((p2 = strstr(p, "$ $")) == NULL)
993 if((buf = icmbstowcs(p, hub->charset)) == NULL)
995 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
997 buf[wcslen(buf) - 1] = L'\0';
999 if((wp2 = wcschr(wp, L' ')) != NULL)
1002 fnetpeersetstr(peer, L"dc-client", wp);
1006 if((wp2 = wcschr(wp, L',')) != NULL)
1010 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
1011 fnetpeersetstr(peer, abuf, wp + 2);
1013 } while(wp2 != NULL);
1016 fnetpeersetstr(peer, L"descr", buf);
1019 if((p2 = strchr(p, '$')) == NULL)
1022 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1024 fnetpeersetstr(peer, L"dc-speed", buf);
1027 if((p2 = strchr(p, '$')) == NULL)
1030 if((buf = icmbstowcs(p, hub->charset)) == NULL)
1032 fnetpeersetstr(peer, L"email", buf);
1037 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1038 hubhandleaction(sk, fn, cmd, args);
1041 /* I do not implement the fully in that I do not disconnect from the
1042 * old hub. I do this since I believe that if the hub owner really
1043 * wants to get rid of us, then it is his responsibility to disconnect
1045 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1048 struct fnetnode *newfn;
1052 if(strchr(args, ':') == NULL)
1054 args = strcpy(smalloc(strlen(args) + 5), args);
1055 strcat(args, ":411");
1060 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
1062 linkfnetnode(newfn);
1065 hubhandleaction(sk, fn, cmd, args);
1070 static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
1075 if(node->parent == NULL)
1077 if(node->parent == shareroot)
1079 if((buf = icwcstombs(node->name, charset)) == NULL)
1082 *retlen = strlen(buf);
1085 if((buf2 = icwcstombs(node->name, charset)) == NULL)
1087 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
1092 len2 = strlen(buf2);
1093 buf = srealloc(buf, len + 1 + len2 + 1);
1095 strcpy(buf + len, buf2);
1096 buf[len + len2] = 0;
1099 *retlen = len + len2;
1105 * This is the main share searching function for Direct Connect
1106 * peers. Feel free to optimize it if you feel the need for it. I
1107 * haven't ever seen it take any noticable CPU time anyway, so I
1108 * haven't felt that need.
1110 * It may feel dubious to just return the directory when all terms are
1111 * satisfied rather than all the files in it, but it really benefits
1112 * everyone: Less cycles used for us, less UDP squelching for active
1113 * searchers, and less bandwidth waste for hubs when serving passive
1116 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1121 char *prefix, *infix, *postfix, *buf, *buf2;
1123 struct sockaddr_in addr;
1124 struct sharecache *node;
1125 int minsize, maxsize;
1128 int termnum, satisfied, skipcheck;
1129 int level, tersat[32];
1130 wchar_t *terms[32], *lname;
1134 if((p = strchr(args, ' ')) == NULL)
1138 memset(terms, 0, sizeof(terms));
1139 prefix = infix = postfix = NULL;
1143 if(!strncmp(args, "Hub:", 4))
1145 if(!strcmp(cmd, "$MultiSearch"))
1147 if(!strcmp(args + 4, hub->nativenick))
1149 prefix = sprintf2("$SR %s ", hub->nativenick);
1150 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1151 postfix = sprintf2(" (%s)\005%s|", formatsockpeer(hub->sk), args + 4);
1155 if((p2 = strchr(args, ':')) == NULL)
1158 addr.sin_family = AF_INET;
1159 if(!inet_aton(args, &addr.sin_addr))
1161 addr.sin_port = htons(atoi(p2));
1162 prefix = sprintf2("$SR %s ", hub->nativenick);
1163 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1164 postfix = sprintf2(" (%s)|", formatsockpeer(hub->sk));
1165 dsk = netdgramconn(udpsock, (struct sockaddr *)&addr, sizeof(addr));
1168 minsize = maxsize = -1;
1177 if((*(p++) == 'T') && (minsize == 0))
1184 if((p2 = strchr(p, '?')) == NULL)
1199 if((*p2 == 0) || (*p2 == '$'))
1207 if(!dotth && !strncmp(p, "TTH:", 4))
1210 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1215 memcpy(hashtth, buf, 24);
1218 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL) {
1219 wcslower(terms[termnum]);
1231 node = shareroot->child;
1233 for(i = 0; i < termnum; i++)
1239 if(node->f.b.type == FILE_REG)
1241 if((minsize >= 0) && (node->size < minsize))
1243 if((maxsize >= 0) && (node->size > maxsize))
1246 if(!skipcheck && dotth)
1248 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1253 lname = wcslower(swcsdup(node->name));
1254 for(i = 0; i < termnum; i++)
1258 if(wcsstr(lname, terms[i]))
1262 } else if(node->child == NULL) {
1268 if(!skipcheck && (satisfied == termnum))
1270 /* Use DCCHARSET in $Get paths until further researched... */
1271 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
1273 if(node->f.b.hastth)
1275 buf2 = base32encode(node->hashtth, 24);
1276 qstrf(dsk, "%s%s\005%ji%sTTH:%.39s%s", prefix, buf, (intmax_t)node->size, infix, buf2, postfix);
1279 qstrf(dsk, "%s%s\005%ji%s%s%s", prefix, buf, (intmax_t)node->size, infix, hub->nativename, postfix);
1284 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1286 while(node->next == NULL)
1288 if((node = node->parent) == shareroot)
1292 if(node == shareroot)
1294 for(i = 0; i < termnum; i++)
1296 if(tersat[i] >= level)
1309 hubhandleaction(sk, fn, cmd, args);
1320 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1324 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1328 struct sockaddr_in addr;
1331 if((p = strchr(args, ' ')) == NULL)
1334 if(strcmp(args, hub->nativenick))
1336 addr.sin_family = AF_INET;
1338 if((p = strchr(args, ':')) == NULL)
1341 addr.sin_port = htons(atoi(p));
1342 if(!inet_aton(args, &addr.sin_addr))
1344 putsock(netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn));
1346 hubhandleaction(sk, fn, cmd, args);
1349 static void sendctm(struct socket *sk, char *nick)
1351 struct sockaddr *addr;
1356 if(lstgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
1358 if(addr->sa_family == AF_INET)
1359 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1361 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1365 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1371 if((p = strchr(args, ' ')) == NULL)
1374 if(strcmp(p, hub->nativenick))
1377 expectpeer(args, fn);
1378 hubhandleaction(sk, fn, cmd, args);
1381 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1384 struct fnetnode *node;
1389 for(node = fnetnodes; node != NULL; node = node->next)
1391 if(node->state == FNN_EST)
1394 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1395 hubhandleaction(sk, fn, cmd, args);
1398 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1405 if((p2 = strchr(p, ' ')) == NULL)
1409 if((p2 = strchr(p, ' ')) == NULL)
1412 if(strcmp(p, "From:"))
1415 if((p2 = strstr(p, " $")) == NULL)
1419 hubrecvchat(hub->sk, fn, p, p2);
1420 hubhandleaction(sk, fn, cmd, args);
1423 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1427 char *nick, *filename, *hubname;
1432 wchar_t *wnick, *wfile;
1436 if((p2 = strchr(p, ' ')) == NULL)
1441 if((p2 = strchr(p, 5)) == NULL)
1445 if((p2 = strchr(p, ' ')) == NULL)
1448 size = strtoll(p, NULL, 10);
1450 if((p2 = strchr(p, '/')) == NULL)
1455 if((p2 = strchr(p, 5)) == NULL)
1459 if((p2 = strstr(p, " (")) == NULL)
1462 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
1464 /* Use DCCHARSET in $Get paths until further researched... */
1465 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
1470 sr = newsrchres(&dcnet, wfile, wnick);
1471 if(sr->peernick != NULL)
1473 sr->peernick = swcsdup(wnick);
1478 if(!strncmp(hubname, "TTH:", 4))
1480 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1483 sr->hash = newhash(L"TTH", 24, buf);
1487 getfnetnode(sr->fn = fn);
1490 hubhandleaction(sk, fn, cmd, args);
1493 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1495 /* Do nothing for now. */
1498 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1505 pw = wpfind(fn->args, L"password");
1506 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
1511 qstrf(sk, "$MyPass %s|", mbspw);
1513 fn->regstatus = FNNS_REG;
1514 hubhandleaction(sk, fn, cmd, args);
1517 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1522 fn->regstatus = FNNS_OP;
1523 hubhandleaction(sk, fn, cmd, args);
1526 static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1532 size_t arrsize, arrdata;
1535 if(hub->supports != NULL)
1537 for(i = 0; hub->supports[i] != NULL; i++)
1538 free(hub->supports[i]);
1539 free(hub->supports);
1542 arrsize = arrdata = 0;
1546 if((p2 = strchr(p, ' ')) != NULL)
1550 addtobuf(arr, sstrdup(p));
1551 } while((p = p2) != NULL);
1552 addtobuf(arr, NULL);
1553 hub->supports = arr;
1556 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1558 struct dcexppeer *expect;
1561 if(peer->nativename != NULL)
1562 free(peer->nativename);
1563 peer->nativename = sstrdup(args);
1564 if(peer->wcsname != NULL)
1565 free(peer->wcsname);
1566 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
1573 for(expect = expected; expect != NULL; expect = expect->next)
1575 if(!strcmp(expect->nick, args))
1582 hub = expect->fn->data;
1583 peer->fn = expect->fn;
1584 getfnetnode(peer->fn);
1585 peer->dcppemu = hub->dcppemu;
1586 freeexppeer(expect);
1591 static void peerattach(struct dcpeer *peer, struct transfer *transfer)
1593 peer->transfer = transfer;
1594 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
1595 CBREG(peer->transfer, trans_destroy, (int (*)(struct transfer *, void *))trdestroycb, NULL, peer);
1598 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1602 struct transfer *transfer;
1604 if((p = strchr(args, ' ')) == NULL)
1607 if(!strcmp(args, "Upload"))
1609 if(!strcmp(args, "Download"))
1613 if((peer->transfer == NULL) || (mydir != peer->direction))
1618 if(peer->direction == TRNSD_DOWN)
1621 if(peer->wcsname == NULL)
1626 peer->direction = mydir;
1627 if(peer->direction == TRNSD_UP)
1629 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1634 transfer = newupload(peer->fn, &dcnet, peer->wcsname, (peer->trpipe = mktrpipe(peer))->back);
1636 if((transfer = finddownload(peer->wcsname)) == NULL)
1641 transferattach(transfer, (peer->trpipe = mktrpipe(peer))->back);
1642 transfersetstate(transfer, TRNS_HS);
1644 transfersetnick(transfer, peer->wcsname);
1645 peerattach(peer, transfer);
1648 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1649 if(peer->key != NULL)
1650 qstrf(sk, "$Key %s|", peer->key);
1651 if(peer->direction == TRNSD_DOWN)
1656 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1659 struct transfer *transfer;
1661 if((p = strchr(args, ' ')) == NULL)
1664 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1666 key = dcmakekey(args);
1669 if(peer->wcsname == NULL)
1678 if((transfer = finddownload(peer->wcsname)) == NULL)
1680 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1685 peer->direction = TRNSD_UP;
1686 transfer = newupload(peer->fn, &dcnet, peer->wcsname, (peer->trpipe = mktrpipe(peer))->back);
1688 peer->direction = TRNSD_DOWN;
1689 transferattach(transfer, (peer->trpipe = mktrpipe(peer))->back);
1690 transfersetstate(transfer, TRNS_HS);
1692 transfersetnick(transfer, peer->wcsname);
1693 peerattach(peer, transfer);
1694 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1695 qstrf(sk, "$Key %s|", key);
1698 if(peer->key != NULL)
1704 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1709 static void startdl(struct dcpeer *peer)
1711 if(peer->timeout != NULL)
1712 canceltimer(peer->timeout);
1713 peer->state = PEER_TRNS;
1714 transferstartdl(peer->transfer, peer->sk);
1715 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1716 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1719 static void startul(struct dcpeer *peer)
1721 if(peer->timeout != NULL)
1722 canceltimer(peer->timeout);
1723 peer->state = PEER_TRNS;
1724 transferstartul(peer->transfer, peer->sk);
1725 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
1726 transwrite(peer->sk, peer);
1729 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1732 struct transfer *transfer;
1734 if(peer->transfer == NULL)
1739 size = strtoll(args, NULL, 10);
1740 if(peer->transfer->size != size)
1742 transfersetsize(peer->transfer, size);
1743 transfer = peer->transfer;
1745 resettransfer(transfer);
1746 trytransferbypeer(transfer->fnet, transfer->peerid);
1750 qstr(peer->sk, "$Send|");
1753 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1755 if(peer->fetchingtthl)
1757 peer->fetchingtthl = 0;
1762 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1764 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1765 resettransfer(peer->transfer);
1771 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1773 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1775 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1776 resettransfer(peer->transfer);
1789 {"MyList.DcLst", &hmlistname, updatehmlist},
1790 {"files.xml", &xmllistname, updatexmllist},
1791 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1795 static int openfilelist(char *name)
1800 for(i = 0; lists[i].name != NULL; i++)
1802 if(!strcmp(name, lists[i].name))
1806 if(lists[i].name == NULL)
1809 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1811 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1814 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1821 static struct sharecache *findbytth(char *tth32)
1825 struct sharecache *node;
1827 if((buf = base32decode(tth32, &buflen)) == NULL)
1834 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1836 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1843 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1845 struct sharecache *node;
1852 if((p2 = strchr(p, sep)) != NULL)
1854 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1861 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1866 struct sharecache *node;
1867 struct socket *lesk;
1871 if(peer->transfer == NULL)
1876 if((p = strchr(args, '$')) == NULL)
1882 if((offset = (strtoll(p, NULL, 10) - 1)) < 0)
1887 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1889 qstr(sk, "$Error Could not send file list|");
1892 } else if(fd >= 0) {
1893 if((buf2 = nmdc2path(args, DCCHARSET)) != NULL) {
1894 transfersetpath(peer->transfer, buf2);
1897 peer->transfer->flags.b.minislot = 1;
1901 /* Use DCCHARSET in $Get paths until further researched... */
1902 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1904 qstrf(sk, "$Error File not in share|");
1908 if((fd = opensharecache(node)) < 0)
1910 qstrf(sk, "$Error %s|", strerror(errno));
1914 buf = getfspath(node);
1915 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1916 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1918 transfersetpath(peer->transfer, buf2);
1921 if(fstat(fd, &sb) < 0)
1924 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1925 qstrf(sk, "$Error|");
1929 if(sb.st_size < 65536)
1930 peer->transfer->flags.b.minislot = 1;
1931 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1933 qstr(sk, "$MaxedOut|");
1937 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1940 qstrf(sk, "$Error Offset out of range|");
1944 lesk = wrapsock(fd);
1945 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1947 qstrf(sk, "$FileLength %ji|", (intmax_t)peer->transfer->size);
1950 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1952 if(peer->transfer == NULL)
1957 if(peer->transfer->localend == NULL)
1966 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1971 size_t arrsize, arrdata;
1973 if(peer->supports != NULL)
1975 for(i = 0; peer->supports[i] != NULL; i++)
1976 free(peer->supports[i]);
1977 free(peer->supports);
1980 arrsize = arrdata = 0;
1984 if((p2 = strchr(p, ' ')) != NULL)
1988 addtobuf(arr, sstrdup(p));
1989 } while((p = p2) != NULL);
1990 addtobuf(arr, NULL);
1991 peer->supports = arr;
1994 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1998 off_t start, numbytes;
1999 char *charset, *buf;
2001 struct sharecache *node;
2003 struct socket *lesk;
2005 if(peer->transfer == NULL)
2011 if((p2 = strchr(p, ' ')) == NULL)
2017 start = strtoll(p, NULL, 10);
2019 if((p2 = strchr(p, ' ')) == NULL)
2025 numbytes = strtoll(p, NULL, 10);
2027 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
2030 /* Use DCCHARSET in $Get paths until further researched... */
2031 charset = DCCHARSET;
2032 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
2033 initcompress(peer, CPRS_ZLIB);
2034 if(((fd = openfilelist(p)) < 0) && (errno != 0))
2036 qstr(sk, "$Error Could not send file list|");
2038 } else if(fd >= 0) {
2039 if((buf2 = nmdc2path(args, charset)) != NULL) {
2040 transfersetpath(peer->transfer, buf2);
2043 peer->transfer->flags.b.minislot = 1;
2047 if((node = resdcpath(p, charset, '\\')) == NULL)
2049 qstr(sk, "$Error File not in cache|");
2052 if((fd = opensharecache(node)) < 0)
2054 qstrf(sk, "$Error %s|", strerror(errno));
2057 buf = getfspath(node);
2058 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2059 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2061 transfersetpath(peer->transfer, buf2);
2064 if(fstat(fd, &sb) < 0)
2067 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2068 qstr(sk, "$Error|");
2071 if(sb.st_size < 65536)
2072 peer->transfer->flags.b.minislot = 1;
2073 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2075 qstr(sk, "$MaxedOut|");
2078 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2081 qstr(sk, "$Error Offset out of range|");
2084 if((numbytes < 0) || (start + numbytes > sb.st_size))
2085 numbytes = sb.st_size - start;
2086 lesk = wrapsock(fd);
2087 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2089 qstrf(sk, "$Sending %ji|", (intmax_t)numbytes);
2093 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2097 off_t start, numbytes;
2098 struct sharecache *node;
2100 struct socket *lesk;
2104 if(peer->transfer == NULL)
2109 if((argv = parseadc(args)) == NULL)
2114 if(parrlen(argv) < 4)
2119 start = strtoll(argv[2], NULL, 10);
2120 numbytes = strtoll(argv[3], NULL, 10);
2123 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2125 qstr(sk, "$Error Could not send file list|");
2127 } else if(fd >= 0) {
2128 if((wbuf = adc2path(argv[1])) != NULL)
2129 transfersetpath(peer->transfer, wbuf);
2131 peer->transfer->flags.b.minislot = 1;
2135 if(!strncmp(argv[1], "TTH/", 4))
2137 if((node = findbytth(argv[1] + 4)) == NULL)
2139 qstr(sk, "$Error File not in cache|");
2143 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2145 qstr(sk, "$Error File not in cache|");
2149 if((fd = opensharecache(node)) < 0)
2151 qstrf(sk, "$Error %s|", strerror(errno));
2154 buf = getfspath(node);
2155 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2156 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2158 transfersetpath(peer->transfer, wbuf);
2161 if(!strcmp(argv[0], "file"))
2163 for(i = 4; argv[i] != NULL; i++)
2165 if(!strcmp(argv[i], "ZL1"))
2166 initcompress(peer, CPRS_ZLIB);
2168 if(fstat(fd, &sb) < 0)
2170 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2171 qstr(sk, "$Error|");
2174 if(sb.st_size < 65536)
2175 peer->transfer->flags.b.minislot = 1;
2176 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2177 qstr(sk, "$MaxedOut|");
2180 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2182 qstr(sk, "$Error Offset out of range|");
2185 if((numbytes < 0) || (start + numbytes > sb.st_size))
2186 numbytes = sb.st_size - start;
2187 lesk = wrapsock(fd);
2188 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2191 qstr(sk, "$ADCSND");
2192 sendadc(sk, "file");
2193 sendadc(sk, argv[1]);
2194 sendadcf(sk, "%ji", (intmax_t)start);
2195 sendadcf(sk, "%ji", (intmax_t)numbytes);
2196 if(peer->compress == CPRS_ZLIB)
2200 } else if(!strcmp(argv[0], "tthl")) {
2202 * XXX: Implement full TTHL support.
2204 * In the meantime, this is better than nothing, since it at
2205 * least allows fetching of the TTH root if it isn't already
2210 qstr(sk, "$Error no TTHL data for virtual files|");
2213 qstr(sk, "$ADCSND");
2214 sendadc(sk, "tthl");
2215 sendadc(sk, argv[1]);
2219 sockqueue(sk, node->hashtth, 24);
2221 qstr(sk, "$Error Namespace not implemented|");
2231 static void handletthl(struct dcpeer *peer)
2235 while(peer->inbufdata >= 24)
2237 pushtigertree(&peer->tth, peer->inbuf);
2238 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2239 peer->curread += 24;
2241 if(peer->curread >= peer->totalsize)
2243 if(peer->timeout == NULL)
2244 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2245 peer->state = PEER_CMD;
2246 synctigertree(&peer->tth);
2247 restigertree(&peer->tth, buf);
2248 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2253 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2256 off_t start, numbytes;
2258 if(peer->transfer == NULL)
2263 if((argv = parseadc(args)) == NULL)
2268 if(parrlen(argv) < 4)
2273 start = strtoll(argv[2], NULL, 10);
2274 numbytes = strtoll(argv[3], NULL, 10);
2275 if(!strcmp(argv[0], "tthl"))
2277 if((start != 0) || (numbytes % 24 != 0))
2279 /* Weird. Bail out. */
2283 if(peer->timeout != NULL)
2284 canceltimer(peer->timeout);
2285 peer->state = PEER_TTHL;
2286 peer->totalsize = numbytes;
2288 peer->fetchingtthl = 0;
2289 inittigertree(&peer->tth);
2291 } else if(!strcmp(argv[0], "file")) {
2292 if(start != peer->transfer->curpos)
2297 if(start + numbytes != peer->transfer->size)
2299 transfersetsize(peer->transfer, start + numbytes);
2304 if(peer->inbufdata > 0)
2306 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2307 peer->inbufdata = 0;
2310 /* We certainly didn't request this...*/
2319 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2323 if(peer->transfer == NULL)
2328 numbytes = strtoll(args, NULL, 10);
2329 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2331 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2336 if(peer->inbufdata > 0)
2338 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2339 peer->inbufdata = 0;
2345 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2350 hubhandleaction(sk, fn, cmd, args);
2354 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2360 static int hubreqconn(struct fnetpeer *peer)
2365 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2370 if((hub = peer->fn->data) == NULL)
2375 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
2376 return(1); /* Shouldn't happen, of course, but who knows... */
2379 sendctm(hub->sk, mbsnick);
2380 expectpeer(mbsnick, peer->fn);
2382 qstrf(hub->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2388 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2391 char *mbsstring, *mbsto;
2394 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
2399 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
2404 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2411 if(strchr(mbsstring, '|') != NULL)
2422 qstrf(hub->sk, "<%s> %s|", hub->nativenick, mbsstring);
2424 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2427 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2434 static void findsizelimit(struct sexpr *sexpr, off_t *min, off_t *max)
2436 off_t minl, maxl, minr, maxr, retmin, retmax;
2441 findsizelimit(sexpr->l, &minl, &maxl);
2442 findsizelimit(sexpr->r, &minr, &maxr);
2443 retmin = (minl > minr)?minl:minr;
2444 if((maxl != -1) && (maxr != -1))
2445 retmax = (maxl < maxr)?maxl:maxr;
2454 findsizelimit(sexpr->l, &minl, &maxl);
2455 findsizelimit(sexpr->r, &minr, &maxr);
2456 retmin = (minl < minr)?minl:minr;
2457 if((maxl == -1) || (maxr == -1))
2460 retmax = (maxl > maxr)?maxl:maxr;
2463 findsizelimit(sexpr->l, &minl, &maxl);
2464 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2468 } else if((minl == 0) && (maxl != -1)) {
2471 } else if((minl != 0) && (maxl == -1)) {
2474 } else { /* This would yield two seperate intervals, which DC cannot handle */
2480 retmax = sexpr->d.sz - 1;
2483 retmin = sexpr->d.sz;
2484 retmax = sexpr->d.sz;
2487 retmin = sexpr->d.sz + 1;
2501 static struct hash *findsehash(struct sexpr *sexpr)
2503 struct hash *h1, *h2;
2508 if((h1 = findsehash(sexpr->l)) != NULL)
2510 if((h1 = findsehash(sexpr->r)) != NULL)
2514 if((h1 = findsehash(sexpr->l)) == NULL)
2516 if((h2 = findsehash(sexpr->r)) == NULL)
2522 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2523 return(sexpr->d.hash);
2530 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2533 struct wcslist *list, *cur;
2534 char *sstr, *buf, *p;
2535 size_t sstrsize, sstrdata;
2536 struct sockaddr *name;
2538 off_t minsize, maxsize;
2542 if((fn->state != FNN_EST) || (hub->sk == NULL) || (hub->sk->state != SOCK_EST))
2544 list = findsexprstrs(srch->sexpr);
2545 findsizelimit(srch->sexpr, &minsize, &maxsize);
2546 hash = findsehash(srch->sexpr);
2547 if((minsize != 0) && (maxsize != -1))
2549 /* Choose either minsize or maxsize by trying to determine
2550 * which choice will be most restrictive. The result can be
2551 * approximative at best anyway, so don't try too hard... */
2552 if((50000000 - maxsize) > (minsize - 50000000))
2558 sstrsize = sstrdata = 0;
2559 if((hash != NULL) && (hash->len == 24))
2561 /* Prioritize hash searches above all else */
2562 bufcat(sstr, "F?T?0?9?TTH:", 12);
2563 buf = base32encode(hash->buf, hash->len);
2565 bufcat(sstr, buf, 39);
2570 sizebuf2(sstr, sstrdata + 32, 1);
2571 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%ji?1?", (intmax_t)minsize);
2572 } else if(maxsize != -1) {
2573 sizebuf2(sstr, sstrdata + 32, 1);
2574 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%ji?1?", (intmax_t)maxsize);
2576 bufcat(sstr, "F?F?0?1?", 8);
2580 for(cur = list; cur != NULL; cur = cur->next)
2582 /* Use DCCHARSET in $Get paths until further researched... */
2583 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2585 /* Can't find anything anyway if the search expression
2586 * requires characters outside DC's charset. There's
2587 * nothing technically wrong with the search itself,
2588 * however, so return success. This should be
2589 * considered as an optimization. */
2596 addtobuf(sstr, '$');
2598 * It probably doesn't hurt if buf contains any extra
2599 * dollar signs - it will just result in extra search
2600 * terms, and the extraneous results will be filtered by
2601 * the search layer anyway. It hurts if it contains any
2602 * pipes, though, so let's sell them for money.
2604 for(p = buf; *p; p++)
2609 bufcat(sstr, buf, strlen(buf));
2613 /* Will match all files... :-/ */
2614 addtobuf(sstr, '.');
2620 if(sockgetremotename2(udpsock, hub->sk, &name, &namelen) < 0)
2622 flog(LOG_WARNING, "cannot get address of UDP socket");
2624 qstrf(hub->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2628 qstrf(hub->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2632 fn->lastsrch = time(NULL);
2640 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2641 static struct command hubcmds[] =
2643 {"$Lock", cc(cmd_lock)},
2644 {"$HubName", cc(cmd_hubname)},
2645 {"$Hello", cc(cmd_hello)},
2646 {"$Quit", cc(cmd_quit)},
2647 {"$NickList", cc(cmd_nicklist)},
2648 {"$OpList", cc(cmd_oplist)},
2649 {"$MyINFO", cc(cmd_myinfo)},
2650 {"$ForceMove", cc(cmd_forcemove)},
2651 {"$Search", cc(cmd_search), .limit = 100},
2652 {"$MultiSearch", cc(cmd_search), .limit = 50},
2653 {"$ConnectToMe", cc(cmd_connecttome), .limit = 200},
2654 {"$RevConnectToMe", cc(cmd_revconnecttome), .limit = 500},
2655 {"$GetNetInfo", cc(cmd_getnetinfo)},
2656 {"$To:", cc(cmd_to)},
2657 {"$SR", cc(cmd_sr)},
2658 {"$UserCommand", cc(cmd_usercommand)},
2659 {"$GetPass", cc(cmd_getpass)},
2660 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2661 {"$Supports", cc(cmd_hubsupports)},
2665 static struct command peercmds[] =
2667 {"$MyNick", cc(cmd_mynick)},
2668 {"$Lock", cc(cmd_peerlock)},
2669 {"$Direction", cc(cmd_direction)},
2670 {"$Key", cc(cmd_key)},
2671 {"$FileLength", cc(cmd_filelength)},
2672 {"$Error", cc(cmd_error)},
2673 {"$MaxedOut", cc(cmd_maxedout)},
2674 {"$Get", cc(cmd_get)},
2675 {"$Send", cc(cmd_send)},
2676 {"$Supports", cc(cmd_supports)},
2677 {"$GetBlock", cc(cmd_getblock)},
2678 {"$UGetBlock", cc(cmd_getblock)},
2679 {"$GetZBlock", cc(cmd_getblock)},
2680 {"$UGetZBlock", cc(cmd_getblock)},
2681 {"$ADCGET", cc(cmd_adcget)},
2682 {"$ADCSND", cc(cmd_adcsnd), .stop = 1},
2683 {"$Sending", cc(cmd_sending), .stop = 1},
2688 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2692 unsigned char outbuf[1024];
2696 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2698 if(sockqueueleft(peer->sk) > 0)
2700 if((buf = sockgetinbuf(peer->trpipe, &bufsize)) != NULL)
2702 if(peer->compress == CPRS_NONE)
2704 sockqueue(peer->sk, buf, bufsize);
2705 } else if(peer->compress == CPRS_ZLIB) {
2706 cstr = peer->cprsdata;
2707 cstr->next_in = buf;
2708 cstr->avail_in = bufsize;
2709 while(cstr->avail_in > 0)
2711 cstr->next_out = outbuf;
2712 cstr->avail_out = sizeof(outbuf);
2713 if((ret = deflate(cstr, 0)) != Z_OK)
2715 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2719 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2724 if(peer->state == PEER_SYNC)
2726 if(peer->compress == CPRS_ZLIB)
2728 cstr = peer->cprsdata;
2729 cstr->next_in = NULL;
2733 cstr->next_out = outbuf;
2734 cstr->avail_out = sizeof(outbuf);
2735 ret = deflate(cstr, Z_FINISH);
2736 if((ret != Z_OK) && (ret != Z_STREAM_END))
2738 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2742 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2743 } while(ret != Z_STREAM_END);
2749 if(peer->timeout == NULL)
2750 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
2751 peer->state = PEER_CMD;
2753 transfersetstate(transfer, TRNS_HS);
2754 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2755 transfer->flags.b.minislot = 0;
2756 peer->sk->writecb = NULL;
2763 static void peerdetach(struct dcpeer *peer)
2765 CBUNREG(peer->transfer, trans_filterout, peer);
2766 CBUNREG(peer->transfer, trans_destroy, peer);
2767 peer->trpipe->pnext = NULL;
2768 closesock(peer->trpipe);
2769 quitsock(peer->trpipe);
2770 peer->trpipe = NULL;
2771 peer->transfer = NULL;
2774 static int trdestroycb(struct transfer *transfer, struct dcpeer *peer)
2781 static void transread(struct socket *sk, struct dcpeer *peer)
2786 if(peer->transfer == NULL) {
2790 if(sockqueueleft(peer->trpipe) < 0)
2792 if((buf = sockgetinbuf(sk, &bufsize)) != NULL)
2794 if(peer->transfer == NULL)
2800 sockqueue(peer->trpipe, buf, bufsize);
2803 if(peer->transfer->curpos >= peer->transfer->size)
2811 static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2813 struct transfer *transfer;
2815 if((transfer = peer->transfer) == NULL)
2824 static void transwrite(struct socket *sk, struct dcpeer *peer)
2826 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2828 if(peer->transfer == NULL)
2833 dctransgotdata(peer->transfer, peer);
2834 sockread(peer->trpipe);
2837 static void trpiperead(struct socket *sk, struct dcpeer *peer)
2839 dctransgotdata(peer->transfer, peer);
2842 static void trpipewrite(struct socket *sk, struct dcpeer *peer)
2844 transread(peer->sk, peer);
2847 static void trpipeerr(struct socket *sk, int errno, struct dcpeer *peer)
2849 peer->state = PEER_SYNC;
2850 dctransgotdata(peer->transfer, peer);
2852 if(peer->state != PEER_CMD)
2856 static struct socket *mktrpipe(struct dcpeer *peer)
2861 sk->pnext = peer->sk;
2863 sk->readcb = (void (*)(struct socket *, void *))trpiperead;
2864 sk->writecb = (void (*)(struct socket *, void *))trpipewrite;
2865 sk->errcb = (void (*)(struct socket *, int, void *))trpipeerr;
2869 static void udpread(struct socket *sk, void *data)
2871 char *buf, *p, *p2, *hashbuf;
2872 size_t buflen, hashlen;
2873 char *nick, *filename, *hubname;
2874 struct sockaddr_in hubaddr;
2875 struct sockaddr *addrbuf;
2878 struct fnetnode *fn, *myfn;
2881 wchar_t *wnick, *wfile;
2884 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2886 buf = srealloc(buf, buflen + 1);
2888 if(!strncmp(buf, "$SR ", 4))
2892 if((p2 = strchr(p, ' ')) == NULL)
2900 if((p2 = strchr(p, 5)) == NULL)
2907 if((p2 = strchr(p, ' ')) == NULL)
2913 size = strtoll(p, NULL, 10);
2915 if((p2 = strchr(p, '/')) == NULL)
2923 if((p2 = strchr(p, 5)) == NULL)
2930 if((p2 = strstr(p, " (")) == NULL)
2937 if((p2 = strchr(p, ':')) == NULL)
2943 hubaddr.sin_family = AF_INET;
2944 if(!inet_aton(p, &hubaddr.sin_addr))
2950 if((p2 = strchr(p, ')')) == NULL)
2956 hubaddr.sin_port = htons(atoi(p));
2957 /* Use DCCHARSET in $Get paths until further researched... */
2958 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
2965 if(!strncmp(hubname, "TTH:", 4))
2967 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2970 hash = newhash(L"TTH", 24, hashbuf);
2974 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2976 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2978 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2993 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2995 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL) && !sockpeeraddr(hub->sk, &addrbuf, NULL))
2997 if((hub->sk != NULL) && addreq(addrbuf, (struct sockaddr *)&hubaddr))
3010 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
3015 sr = newsrchres(&dcnet, wfile, wnick);
3016 if(sr->peernick != NULL)
3018 sr->peernick = swcsdup(wnick);
3024 getfnetnode(sr->fn = myfn);
3033 static void hubread(struct socket *sk, struct fnetnode *fn)
3036 struct command *cmd;
3038 size_t datalen, cnlen;
3041 hub = (struct dchub *)fn->data;
3042 if(hub->queue.size > 1000)
3044 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3046 if(hub->inbufdata > 500000) /* Discard possible malicious data */
3048 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
3049 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
3052 hub->inbufdata += datalen;
3053 while((p - hub->inbuf < hub->inbufdata) && ((p2 = memchr(p, '|', hub->inbufdata - (p - hub->inbuf))) != NULL))
3056 for(cmd = hubcmds; cmd->handler != NULL; cmd++)
3058 cnlen = strlen(cmd->name);
3059 if(!strncmp(p, cmd->name, cnlen) && ((p[cnlen] == ' ') || (p[cnlen] == 0)))
3062 if((cmd->limit == 0) || (hub->queue.size < cmd->limit))
3063 newqcmd(&hub->queue, p);
3066 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
3069 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
3074 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
3080 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
3082 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
3087 if(hub == NULL) /* Not yet connected */
3092 if(hub->nativenick != NULL)
3093 free(hub->nativenick);
3094 hub->nativenick = buf;
3098 static struct dchub *newdchub(struct fnetnode *fn)
3105 new = smalloc(sizeof(*new));
3106 memset(new, 0, sizeof(*new));
3108 if(confgetint("dc", "dcppemu"))
3110 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3118 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3120 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3122 if(!havecharset(charset))
3130 new->charset = charset;
3132 new->charset = sstrdup(DCCHARSET);
3133 if(hubsetnick(fn, fn->mynick))
3134 fnetsetnick(fn, L"DoldaConnectUser-IN");
3135 /* IN as in Invalid Nick */
3139 static struct dcpeer *newdcpeer(struct socket *sk)
3143 new = smalloc(sizeof(*new));
3144 memset(new, 0, sizeof(*new));
3147 if(confgetint("dc", "dcppemu"))
3158 static void freedcpeer(struct dcpeer *peer)
3161 struct qcommand *qcmd;
3165 if(peer->next != NULL)
3166 peer->next->prev = peer->prev;
3167 if(peer->prev != NULL)
3168 peer->prev->next = peer->next;
3169 if(peer->transfer != NULL)
3171 if(peer->timeout != NULL)
3172 canceltimer(peer->timeout);
3173 if(peer->sk->data == peer)
3174 peer->sk->data = NULL;
3175 peer->sk->readcb = NULL;
3176 peer->sk->writecb = NULL;
3177 peer->sk->errcb = NULL;
3180 if(peer->supports != NULL)
3182 for(i = 0; peer->supports[i] != NULL; i++)
3183 free(peer->supports[i]);
3184 free(peer->supports);
3186 if(peer->inbuf != NULL)
3188 if(peer->key != NULL)
3190 if(peer->wcsname != NULL)
3191 free(peer->wcsname);
3192 if(peer->nativename != NULL)
3193 free(peer->nativename);
3194 if(peer->charset != NULL)
3195 free(peer->charset);
3196 if(peer->fn != NULL)
3197 putfnetnode(peer->fn);
3198 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3204 static void hubconnect(struct fnetnode *fn, struct socket *sk)
3208 sk->readcb = (void (*)(struct socket *, void *))hubread;
3209 sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3210 fn->data = hub = newdchub(fn);
3212 getsock(hub->sk = sk);
3216 static void hubdestroy(struct fnetnode *fn)
3220 struct qcommand *qcmd;
3222 hub = (struct dchub *)fn->data;
3224 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3226 if(hub->supports != NULL)
3228 for(i = 0; hub->supports[i] != NULL; i++)
3229 free(hub->supports[i]);
3230 free(hub->supports);
3232 if(hub->nativename != NULL)
3233 free(hub->nativename);
3234 if(hub->nativenick != NULL)
3235 free(hub->nativenick);
3236 if(hub->charset != NULL)
3238 if(hub->inbuf != NULL)
3243 static void hubkill(struct fnetnode *fn)
3247 hub = (struct dchub *)fn->data;
3251 static struct fnet dcnet =
3254 .connect = hubconnect,
3255 .destroy = hubdestroy,
3257 .setnick = hubsetnick,
3258 .reqconn = hubreqconn,
3259 .sendchat = hubsendchat,
3260 .search = hubsearch,
3263 static void peerread(struct socket *sk, struct dcpeer *peer)
3266 size_t datalen, cnlen;
3267 struct command *cmd;
3269 if(peer->state == PEER_CMD) {
3270 if((peer->queue.size > 50) || (peer->inbufdata > 65536))
3272 } else if(peer->state == PEER_TTHL) {
3276 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3278 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3279 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3281 peer->inbufdata += datalen;
3282 if(peer->state == PEER_CMD)
3285 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3288 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3290 cnlen = strlen(cmd->name);
3291 if(!strncmp(peer->inbuf, cmd->name, cnlen) && ((peer->inbuf[cnlen] == ' ') || (peer->inbuf[cnlen] == 0)))
3294 if((cmd->limit == 0) || (peer->queue.size < cmd->limit))
3295 newqcmd(&peer->queue, peer->inbuf);
3296 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3299 peer->state = PEER_STOP;
3303 } else if(peer->state == PEER_TTHL) {
3308 static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3313 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3315 struct dcpeer *peer;
3324 peer = newdcpeer(sk);
3327 peer->dcppemu = hub->dcppemu;
3328 sk->readcb = (void (*)(struct socket *, void *))peerread;
3329 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3331 socksettos(sk, confgetint("fnet", "fnptos"));
3332 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3337 static void peeraccept(struct lport *lp, struct socket *newsk, void *data)
3339 struct dcpeer *peer;
3341 peer = newdcpeer(newsk);
3343 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3344 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3346 socksettos(newsk, confgetint("fnet", "fnptos"));
3347 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3350 static void updatehmlist(void)
3352 int i, lev, ic, ret;
3353 struct sharecache *node;
3354 char *buf, *buf2, numbuf[32];
3355 size_t bufsize, bufdata;
3360 buf = smalloc(bufsize = 65536);
3361 node = shareroot->child;
3366 /* Use DCCHARSET in $Get paths until further researched... */
3367 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3369 for(i = 0; i < lev; i++)
3371 bufcat(buf, buf2, strlen(buf2));
3373 if(node->f.b.type == FILE_REG)
3376 sprintf(numbuf, "%ji", (intmax_t)node->size);
3377 bufcat(buf, numbuf, strlen(numbuf));
3384 if((node->child != NULL) && !ic)
3388 } else if(node->next != NULL) {
3391 while(node->next == NULL)
3394 node = node->parent;
3395 if(node == shareroot)
3398 if(node == shareroot)
3403 if(hmlistname != NULL)
3408 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3409 if((fd = mkstemp(hmlistname)) < 0)
3411 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3415 out = fdopen(fd, "w");
3417 * I do not want to implement a good Huffman encoder, and it's not
3418 * like Huffman encoding actually yields any impressive results
3419 * for DC file lists anyway, so I'll just output a bogus
3420 * tree. Implement a good encoder if you want to.
3422 fwrite("HE3\r\0", 1, 5, out);
3423 fwrite(&bufdata, 4, 1, out); /* XXX: Endian unsafe */
3425 fwrite(&ibuf, 2, 1, out);
3427 for(i = 0; i < 256; i++)
3429 fwrite(&i, 1, 1, out);
3430 fwrite(&ibuf, 1, 1, out);
3432 for(i = 0; i < 256; i++)
3433 fwrite(&i, 1, 1, out);
3434 for(buf2 = buf; bufdata > 0;)
3436 if((ret = fwrite(buf2, 1, bufdata, out)) < 0)
3438 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3449 static struct xmlent
3456 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3460 static wchar_t *escapexml(wchar_t *src)
3462 static wchar_t *buf = NULL;;
3465 size_t bufsize, bufdata;
3471 bufsize = bufdata = 0;
3472 for(; *src != L'\0'; src++)
3475 if((c > 0) && (c < 32))
3477 bufcat(buf, L"&#", 2);
3478 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3479 bufcat(buf, nbuf, ret);
3480 addtobuf(buf, L';');
3482 for(ent = entities; ent->ent != NULL; ent++)
3486 bufcat(buf, ent->ent, wcslen(ent->ent));
3490 if(ent->ent == NULL)
3491 addtobuf(buf, *src);
3494 addtobuf(buf, L'\0');
3498 static void updatexmllist(void)
3502 char cidbuf[14], *namebuf;
3504 struct sharecache *node;
3506 if(xmllistname != NULL)
3508 unlink(xmllistname);
3511 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3512 if((fd = mkstemp(xmllistname)) < 0)
3514 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3519 if((fs = fdopen(fd, "w")) == NULL)
3521 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3522 unlink(xmllistname);
3528 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3529 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3530 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3532 if(confgetint("dc", "dcppemu"))
3533 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3535 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
3537 node = shareroot->child;
3541 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3543 for(i = 0; i < lev; i++)
3545 if(node->child != NULL)
3547 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3552 fprintf(fs, "<File Name=\"%s\" Size=\"%ji\"", namebuf, (intmax_t)node->size);
3553 if(node->f.b.hastth)
3555 hashbuf = base32encode(node->hashtth, 24);
3556 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3559 fprintf(fs, "/>\r\n");
3561 while(node->next == NULL)
3563 node = node->parent;
3564 if(node == shareroot)
3569 for(i = 0; i < lev; i++)
3571 fprintf(fs, "</Directory>\r\n");
3574 if(node == shareroot)
3580 if(confgetint("dc", "dcppemu"))
3581 fprintf(fs, "</FileListing>");
3583 fprintf(fs, "</FileListing>\r\n");
3587 static void updatexmlbz2list(void)
3596 if(xmllistname == NULL)
3598 if((in = fopen(xmllistname, "r")) == NULL)
3600 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3603 if(xmlbz2listname != NULL)
3605 unlink(xmlbz2listname);
3606 free(xmlbz2listname);
3608 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3609 if((fd = mkstemp(xmlbz2listname)) < 0)
3611 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3612 free(xmlbz2listname);
3613 xmlbz2listname = NULL;
3617 if((real = fdopen(fd, "w")) == NULL)
3619 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3621 unlink(xmlbz2listname);
3622 free(xmlbz2listname);
3623 xmlbz2listname = NULL;
3627 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3630 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3632 unlink(xmlbz2listname);
3633 free(xmlbz2listname);
3634 xmlbz2listname = NULL;
3640 bufdata = fread(buf, 1, sizeof(buf), in);
3641 BZ2_bzWrite(&err, out, buf, bufdata);
3644 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3648 static void listtimercb(int cancelled, void *uudata)
3650 listwritetimer = NULL;
3655 static void updatelists(int now)
3657 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3661 if(listwritetimer == NULL)
3662 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
3665 if(listwritetimer != NULL)
3666 canceltimer(listwritetimer);
3672 static int shareupdate(unsigned long long uusharesize, void *data)
3678 static char *quotestr(char *str)
3682 size_t bufsize, bufdata;
3684 static char *enc = NULL;
3685 size_t encsize, encdata;
3688 bufsize = bufdata = 0;
3689 for(p = (unsigned char *)str; *p; p++)
3692 bufcat(buf, "\\b", 2);
3694 bufcat(buf, "\\t", 2);
3696 bufcat(buf, "\\n", 2);
3698 bufcat(buf, "\\r", 2);
3700 bufcat(buf, "\\\\", 2);
3704 bprintf(buf, "\\x%02x", *p);
3710 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3712 enc = icwcstombs(wbuf, NULL);
3717 encsize = encdata = 0;
3718 for(p = buf; *p; p++) {
3722 bprintf(buf, "\\x%x", *p);
3729 static void logunimpl(char *list, char *cmd, char *args)
3733 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3735 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3740 fputs(quotestr(cmd), log);
3744 fputs(quotestr(args), log);
3750 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3753 struct command *cmd;
3755 if((p = strchr(qcmd->string, ' ')) != NULL)
3757 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3759 if(!strcmp(cmd->name, qcmd->string))
3762 if(cmd->handler != NULL)
3764 cmd->handler(sk, data, qcmd->string, p);
3765 } else if(confgetint("dc", "logunimpl")) {
3766 if(cmdlist == hubcmds)
3767 logunimpl("hub", qcmd->string, p);
3768 else if(cmdlist == peercmds)
3769 logunimpl("peer", qcmd->string, p);
3771 logunimpl("other?!", qcmd->string, p);
3775 static int run(void)
3777 struct fnetnode *fn, *nextfn;
3779 struct dcpeer *peer, *nextpeer;
3780 struct qcommand *qcmd;
3785 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3788 if(fn->fnet != &dcnet)
3790 if(fn->data == NULL)
3792 hub = (struct dchub *)fn->data;
3793 while((quota > 0) && ((qcmd = ulqcmd(&hub->queue)) != NULL))
3795 if(*qcmd->string == '$')
3797 if((hub->sk != NULL) && (hub->sk->state == SOCK_EST))
3798 dispatchcommand(qcmd, hubcmds, hub->sk, fn);
3799 } else if(*qcmd->string != 0) {
3800 hubrecvchat(hub->sk, fn, NULL, qcmd->string);
3806 if(hub->queue.size < 1000)
3807 hubread(hub->sk, fn);
3812 for(peer = peers; peer != NULL; peer = peer->next)
3814 while(!peer->close && (quota > 0) && ((qcmd = ulqcmd(&peer->queue)) != NULL))
3816 if(peer->timeout != NULL)
3817 canceltimer(peer->timeout);
3818 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
3819 if(*qcmd->string == '$')
3820 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3825 if((peer->queue.size < 50) && (peer->inbufdata < 500000))
3826 peerread(peer->sk, peer);
3830 for(peer = peers; peer != NULL; peer = nextpeer)
3832 nextpeer = peer->next;
3839 static void preinit(int hup)
3846 static int updateudpport(struct configvar *var, void *uudata)
3848 struct sockaddr_in addr;
3849 struct socket *newsock;
3851 memset(&addr, 0, sizeof(addr));
3852 addr.sin_family = AF_INET;
3853 addr.sin_port = htons(var->val.num);
3854 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3856 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3859 newsock->readcb = udpread;
3866 static int updatetcpport(struct configvar *var, void *uudata)
3868 struct sockaddr_in addr;
3869 struct lport *newsock;
3871 memset(&addr, 0, sizeof(addr));
3872 addr.sin_family = AF_INET;
3873 addr.sin_port = htons(var->val.num);
3874 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3875 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3877 closelport(tcpsock);
3882 static int init(int hup)
3884 struct sockaddr_in addr;
3888 GCBREG(sharechangecb, shareupdate, NULL);
3892 closelport(tcpsock);
3893 addr.sin_family = AF_INET;
3894 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3895 addr.sin_port = htons(confgetint("dc", "udpport"));
3896 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3898 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3901 udpsock->readcb = udpread;
3902 addr.sin_port = htons(confgetint("dc", "tcpport"));
3903 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3904 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3905 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3906 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3907 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3912 static void terminate(void)
3914 if(hmlistname != NULL)
3919 if(xmllistname != NULL)
3921 unlink(xmllistname);
3924 if(xmlbz2listname != NULL)
3926 unlink(xmlbz2listname);
3927 free(xmlbz2listname);
3931 static struct configvar myvars[] =
3933 /** Specifies the share description reported to other DC users. */
3934 {CONF_VAR_STRING, "desc", {.str = L""}},
3935 /** Specifies the speed reported to other DC users. Normal values
3936 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3937 * LAN(T1) or LAN(T3)*/
3938 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3939 /** The e-mail address to report to other DC users. */
3940 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3941 /** Specifies a specific UDP port to use for DC search results. If
3942 * left unspecified, a port is allocated dynamically. Useful for
3943 * NAT routers (see also the net.visibleipv4 address for those
3945 {CONF_VAR_INT, "udpport", {.num = 0}},
3946 /** Specifies a specific TCP port to use for DC peer
3947 * connections. If left unspecified, a port is allocated
3948 * dynamically. Useful for NAT routers (see also the
3949 * net.visibleipv4 address for those cases). */
3950 {CONF_VAR_INT, "tcpport", {.num = 0}},
3951 /** If set to true, doldacond will do its best to emulate DC++
3952 * (currently v0.674). This should be left off if at all possible,
3953 * since turning it on will violate the rules of most hubs and
3954 * thus give hub owners an actual reason to kick you if it is
3955 * detected. It might be needed for some of the more bone-headed
3956 * hub owners, though. Note that DC++ emulation can also be turned
3957 * on or off for individual hubs, overriding this setting. */
3958 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
3959 /** Use for debugging. If set to true, doldacond will log all
3960 * unknown commands it receives, and their arguments, to
3961 * /tmp/dc-unimpl. */
3962 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
3963 /** If set to true, doldacond will hide its support for deflate
3964 * compression of transfers from other clients, so that they will
3965 * not request compressed uploads. Compressed transfers may
3966 * consume a non-trivial amount of CPU time on slower machines. */
3967 {CONF_VAR_BOOL, "hidedeflate", {.num = 0}},
3971 static struct module me =
3980 .terminate = terminate,