2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com)
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include <netinet/in.h>
27 #include <arpa/inet.h>
45 #include "sysevents.h"
50 * The Direct Connect protocol is extremely ugly. Thus, this code must
51 * also be a bit ugly in certain places. Please forgive me. =/
53 * This also means that there might be some pieces of the code that
54 * look completely illogical to you, and you think that you may make
55 * them much neater/better. However, in many cases it might just be
56 * that it's required to cope with some oddity of the protocol, such
57 * as the amazingly ugly delayed key response in the peer protocol.
60 /* I assume this is the correct character set to use for DC,
61 * considering it was developed without i18n support under Windows */
62 #define DCCHARSET "windows-1252"
64 #ifdef DCPP_MASQUERADE
66 * I honestly don't want to pretend being a client that I'm not, but
67 * there are so many hubs that simply do not accept any clients
68 * outside their whitelists, for no obvious reasons, so I feel that I
69 * am left with little choice. Anyhow, as long as I actually support
70 * all the features that my faked DC++ version does, there should be
71 * very little harm done.
74 #define DCIDTAGV "0.674"
75 #define DCIDFULL "DC++ 0.674"
77 #define DCIDTAG "Dolda"
78 #define DCIDTAGV VERSION
79 #define DCIDFULL "DoldaConnect " VERSION
94 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
100 struct qcommand *next;
107 size_t inbufdata, inbufsize;
108 struct qcommand *queue;
116 struct dcexppeer *next, *prev;
119 struct timer *expire;
124 struct dcpeer *next, *prev;
128 size_t inbufdata, inbufsize;
129 size_t curread, totalsize;
131 struct qcommand *queue;
132 struct transfer *transfer;
134 int ptclose; /* Close after transfer is complete */
135 int accepted; /* If false, we connected, otherwise, we accepted */
137 int direction; /* Using the constants from transfer.h */
139 int hascurpos, fetchingtthl, notthl;
140 struct tigertreehash tth;
148 static struct fnet dcnet;
149 static struct transferiface dctransfer;
150 static struct socket *udpsock = NULL;
151 static struct socket *tcpsock = NULL;
152 static struct dcpeer *peers = NULL;
154 static struct dcexppeer *expected = NULL;
155 static char *hmlistname = NULL;
156 static char *xmllistname = NULL;
157 static char *xmlbz2listname = NULL;
159 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
160 static void freedcpeer(struct dcpeer *peer);
161 static void transread(struct socket *sk, struct dcpeer *peer);
162 static void transerr(struct socket *sk, int err, struct dcpeer *peer);
163 static void transwrite(struct socket *sk, struct dcpeer *peer);
164 static void updatehmlist(void);
165 static void updatexmllist(void);
166 static void updatexmlbz2list(void);
167 static void requestfile(struct dcpeer *peer);
169 static int reservedchar(unsigned char c)
171 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
174 /* Oh, how I despise having to do this... */
175 static char *dcmakekey(char *lock)
181 buf = smalloc(strlen(lock));
184 for(i = 0; lock[i]; i++)
186 buf[i] = lock[i] ^ save;
187 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
189 if((i != 0) && reservedchar(buf[i]))
194 buf[0] ^= buf[i - 1];
195 if(reservedchar(buf[0]))
199 key = smalloc(len + 1);
201 for(i = 0; lock[i] != 0; i++)
203 if(reservedchar(buf[i]))
204 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
206 key[offset++] = buf[i];
213 static char *pathnmdc2adc(char *path)
216 size_t retsize, retdata;
218 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
219 return(sstrdup(path));
221 retsize = retdata = 0;
228 addtobuf(ret, *path);
234 static int isdchash(struct hash *hash)
236 if(wcscmp(hash->algo, L"TTH"))
243 static int supports(struct dcpeer *peer, char *cap)
247 if(peer->supports == NULL)
249 for(p = peer->supports; *p != NULL; p++)
251 if(!strcasecmp(*p, cap))
257 static void endcompress(struct dcpeer *peer)
259 if(peer->compress == CPRS_ZLIB)
261 deflateEnd(peer->cprsdata);
262 free(peer->cprsdata);
264 peer->compress = CPRS_NONE;
267 static void initcompress(struct dcpeer *peer, int algo)
272 peer->compress = algo;
273 if(algo == CPRS_ZLIB)
275 peer->cprsdata = smalloc(sizeof(z_stream));
276 memset(peer->cprsdata, 0, sizeof(z_stream));
277 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
279 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
285 static void unquote(wchar_t *in)
289 for(p = in; *p != L'\0'; p++)
293 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
300 if(!wcscmp(p + 1, L"amp"))
303 } else if(p[1] == L'#') {
304 nc = ucptowc(wcstol(p + 2, NULL, 10));
313 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
318 static void freeexppeer(struct dcexppeer *ep)
321 ep->next->prev = ep->prev;
323 ep->prev->next = ep->next;
328 if(ep->expire != NULL)
329 canceltimer(ep->expire);
333 static void exppeerexpire(int cancelled, struct dcexppeer *ep)
340 static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
342 struct dcexppeer *ep;
344 ep = smalloc(sizeof(*ep));
345 ep->nick = sstrdup(nick);
346 getfnetnode(ep->fn = fn);
347 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
356 static struct qcommand *newqcmd(struct qcommand **queue, char *string)
358 struct qcommand *new;
360 while(*queue != NULL)
361 queue = &(*queue)->next;
362 new = smalloc(sizeof(*new));
363 new->string = sstrdup(string);
369 static struct qcommand *ulqcmd(struct qcommand **queue)
371 struct qcommand *qcmd;
373 if((qcmd = *queue) == NULL)
379 static void freeqcmd(struct qcommand *qcmd)
385 static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
387 wchar_t *chat, *wfrom, *wpeer;
389 struct fnetpeer *peer;
391 end = string + strlen(string);
392 while((p = strchr(string, 13)) != NULL)
393 memmove(p, p + 1, (end-- - p));
396 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
397 string += strlen(from) + 2;
398 if((wfrom = icmbstowcs(from, DCCHARSET)) == NULL)
400 wpeer = swcsdup(wfrom);
406 for(p = string + 1; *p; p++)
408 if((*p == ' ') || (*p == '>'))
416 if((wpeer = icmbstowcs(string + 1, DCCHARSET)) == NULL)
422 wpeer = swcsdup(L"");
424 if((chat = icmbstowcs(string, DCCHARSET)) == NULL)
434 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
435 fnethandlechat(fn, 1, wfrom, wpeer, chat);
437 fnethandlechat(fn, 0, wfrom, wpeer, chat);
439 fnethandlechat(fn, 1, L"", wpeer, chat);
447 static void sendadc(struct socket *sk, char *arg)
450 size_t bufsize, bufdata;
453 bufsize = bufdata = 0;
459 bufcat(buf, "\\s", 2);
460 } else if(*arg == '\n') {
461 bufcat(buf, "\\n", 2);
462 } else if(*arg == '\\') {
463 bufcat(buf, "\\\\", 2);
468 sockqueue(sk, buf, bufdata);
472 static void sendadcf(struct socket *sk, char *arg, ...)
478 buf = vsprintf2(arg, args);
486 static char **parseadc(char *args)
489 size_t retbufsize, retbufdata;
491 size_t bufsize, bufdata;
496 retbufsize = retbufdata = bufsize = bufdata = 0;
505 else if(*args != ' ')
509 if((*args == ' ') || (*args == 0))
512 addtobuf(retbuf, buf);
514 bufsize = bufdata = 0;
517 } else if(*args == '\\') {
520 addtobuf(buf, *args);
529 addtobuf(retbuf, NULL);
532 } else if((*args == 's') || (*args == ' ')) {
534 } else if(*args == 'n') {
536 } else if(*args == '\\') {
546 addtobuf(retbuf, NULL);
550 /* Macros useful in command handlers */
551 #define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
552 #define qstr(sk, str) sockqueue(sk, str, strlen(str))
553 #define qstrf(sk, strandargs...) \
556 if((__buf__ = sprintf2(strandargs)) != NULL) { \
557 sockqueue(sk, __buf__, strlen(__buf__)); \
562 static char *tr(char *str, char *trans)
566 for(; *trans; trans += 2)
568 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
574 static char *getadcid(struct dcpeer *peer)
580 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
582 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
584 buf = base32encode(peer->transfer->hash->buf, 24);
585 ret = sprintf2("TTH/%.39s", buf);
588 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
590 ret = pathnmdc2adc(buf);
597 static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
599 if(!wcscmp(cmd, L"resume"))
603 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
606 transfer->curpos = wcstol(arg, NULL, 10);
615 static void sendmynick(struct dcpeer *peer)
619 hub = (peer->fn == NULL)?NULL:(peer->fn->data);
621 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), DCCHARSET, "DoldaConnectUser-IN"));
623 qstrf(peer->sk, "$MyNick %s|", hub->nativenick);
626 static void sendpeerlock(struct dcpeer *peer)
628 #ifdef DCPP_MASQUERADE
629 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
631 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
635 static void sendsupports(struct dcpeer *peer)
637 #ifdef DCPP_MASQUERADE
638 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
640 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
644 static void requestfile(struct dcpeer *peer)
648 if(peer->transfer->size == -1)
650 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
652 transferseterror(peer->transfer, TRNSE_NOTFOUND);
656 /* The transfer will be restarted later from
657 * cmd_filelength when it detects that the sizes
659 qstrf(peer->sk, "$Get %s$1|", buf);
662 if((peer->transfer->hash == NULL) && !peer->notthl)
664 if(supports(peer, "adcget") && supports(peer, "tthl"))
666 qstr(peer->sk, "$ADCGET");
667 sendadc(peer->sk, "tthl");
668 if((buf = getadcid(peer)) == NULL)
670 transferseterror(peer->transfer, TRNSE_NOTFOUND);
674 sendadc(peer->sk, buf);
676 sendadc(peer->sk, "0");
677 sendadc(peer->sk, "-1");
679 peer->fetchingtthl = 1;
685 if(forkfilter(peer->transfer))
687 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
691 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
694 if(supports(peer, "adcget"))
696 qstr(peer->sk, "$ADCGET");
697 sendadc(peer->sk, "file");
698 if((buf = getadcid(peer)) == NULL)
700 transferseterror(peer->transfer, TRNSE_NOTFOUND);
704 sendadc(peer->sk, buf);
706 sendadcf(peer->sk, "%i", peer->transfer->curpos);
707 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
709 } else if(supports(peer, "xmlbzlist")) {
710 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
712 transferseterror(peer->transfer, TRNSE_NOTFOUND);
716 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
718 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
720 transferseterror(peer->transfer, TRNSE_NOTFOUND);
724 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
728 static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
732 struct fnetnode *cfn;
736 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
737 buf = tr(icswcstombs(confgetstr("dc", "desc"), DCCHARSET, "Charset_conv_failure"), "$_|_");
738 qstrf(sk, "%s", buf);
740 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
742 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
744 if(cfn->regstatus == FNNS_OP)
746 else if(cfn->regstatus == FNNS_REG)
752 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
755 (tcpsock == NULL)?'P':'A',
757 confgetint("transfer", "slots")
760 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), DCCHARSET, "Charset_conv_failure"), "$_|_");
761 qstrf(sk, "%s\x01$", buf);
762 buf = tr(icswcstombs(confgetstr("dc", "email"), DCCHARSET, "Charset_conv_failure"), "$_|_");
763 qstrf(sk, "%s$", buf);
764 qstrf(sk, "%llu$|", sharesize);
767 static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
772 if(!strcmp(cmd, "$Lock"))
774 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
775 } else if(!strcmp(cmd, "$Hello")) {
776 if(fn->state == FNN_HS)
778 qstrf(sk, "$Version 1,0091|");
779 qstrf(sk, "$GetNickList|");
781 fnetsetstate(fn, FNN_EST);
783 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
788 static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
795 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
797 if((p = strchr(args, ' ')) != NULL)
801 #ifdef DCPP_MASQUERADE
802 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
804 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
807 key = dcmakekey(args);
808 qstrf(sk, "$Key %s|", key);
810 hubhandleaction(sk, fn, cmd, args);
813 static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
819 if(hub->nativename == NULL)
820 free(hub->nativename);
821 hub->nativename = sstrdup(args);
822 buf = icmbstowcs(args, DCCHARSET);
823 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
826 hubhandleaction(sk, fn, cmd, args);
829 static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
835 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
837 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
838 fnetaddpeer(fn, nick, nick);
840 hubhandleaction(sk, fn, cmd, args);
843 static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
846 struct fnetpeer *peer;
850 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
852 if((peer = fnetfindpeer(fn, nick)) != NULL)
855 hubhandleaction(sk, fn, cmd, args);
858 static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
863 struct fnetpeer *peer, *npeer;
866 for(peer = fn->peers; peer != NULL; peer = peer->next)
867 peer->flags.b.delete = 1;
868 while((p = strstr(args, "$$")) != NULL)
871 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
873 if((peer = fnetfindpeer(fn, buf)) == NULL)
874 peer = fnetaddpeer(fn, buf, buf);
876 peer->flags.b.delete = 0;
878 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
882 for(peer = fn->peers; peer != NULL; peer = npeer)
885 if(peer->flags.b.delete)
888 hubhandleaction(sk, fn, cmd, args);
891 static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
896 struct fnetpeer *peer;
899 for(peer = fn->peers; peer != NULL; peer = peer->next)
900 peer->flags.b.op = 0;
901 while((p = strstr(args, "$$")) != NULL)
904 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
906 if((peer = fnetfindpeer(fn, buf)) != NULL)
907 peer->flags.b.op = 1;
912 hubhandleaction(sk, fn, cmd, args);
915 static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
918 wchar_t *buf, *wp, *wp2;
920 struct fnetpeer *peer;
925 if(strncmp(p, "$ALL ", 5))
928 if((p2 = strchr(p, ' ')) == NULL)
931 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
933 if((peer = fnetfindpeer(fn, buf)) == NULL)
934 peer = fnetaddpeer(fn, buf, buf);
937 if((p2 = strstr(p, "$ $")) == NULL)
940 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
942 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcschr(buf, L'<')) != NULL))
944 buf[wcslen(buf) - 1] = L'\0';
946 if((wp2 = wcschr(wp, L' ')) != NULL)
949 fnetpeersetstr(peer, L"dc-client", wp);
953 if((wp2 = wcschr(wp, L',')) != NULL)
957 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
958 fnetpeersetstr(peer, abuf, wp + 2);
960 } while(wp2 != NULL);
963 fnetpeersetstr(peer, L"descr", buf);
966 if((p2 = strchr(p, '$')) == NULL)
969 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
971 fnetpeersetstr(peer, L"dc-speed", buf);
974 if((p2 = strchr(p, '$')) == NULL)
977 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
979 fnetpeersetstr(peer, L"email", buf);
984 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
985 hubhandleaction(sk, fn, cmd, args);
988 /* I do not implement the fully in that I do not disconnect from the
989 * old hub. I do this since I believe that if the hub owner really
990 * wants to get rid of us, then it is his responsibility to disconnect
992 static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
995 struct fnetnode *newfn;
999 if(strchr(args, ':') == NULL)
1001 args = strcpy(smalloc(strlen(args) + 5), args);
1002 strcat(args, ":411");
1007 if((newfn = fnetinitconnect(L"dc", args, NULL)) != NULL)
1009 linkfnetnode(newfn);
1012 hubhandleaction(sk, fn, cmd, args);
1017 static char *getdcpath(struct sharecache *node, size_t *retlen)
1022 if(node->parent == NULL)
1024 if(node->parent == shareroot)
1026 if((buf = icwcstombs(node->name, DCCHARSET)) == NULL)
1029 *retlen = strlen(buf);
1032 if((buf2 = icwcstombs(node->name, DCCHARSET)) == NULL)
1034 if((buf = getdcpath(node->parent, &len)) == NULL)
1039 len2 = strlen(buf2);
1040 buf = srealloc(buf, len + 1 + len2 + 1);
1042 strcpy(buf + len, buf2);
1043 buf[len + len2] = 0;
1046 *retlen = len + len2;
1052 * This is the main share searching function for Direct Connect
1053 * peers. Feel free to optimize it if you feel the need for it. I
1054 * haven't ever seen it take any noticable CPU time anyway, so I
1055 * haven't felt that need.
1057 * It may feel dubious to just return the directory when all terms are
1058 * satisfied rather than all the files in it, but it really benefits
1059 * everyone: Less cycles used for us, less UDP squelching for active
1060 * searchers, and less bandwidth waste for hubs when serving passive
1063 static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1068 char *prefix, *infix, *postfix, *buf, *buf2;
1070 struct sockaddr_in addr;
1071 struct sharecache *node;
1072 int minsize, maxsize;
1074 int termnum, satisfied, skipcheck;
1075 int level, tersat[32];
1080 if((p = strchr(args, ' ')) == NULL)
1084 memset(terms, 0, sizeof(terms));
1085 prefix = infix = postfix = NULL;
1089 if(!strncmp(args, "Hub:", 4))
1091 if(!strcmp(cmd, "$MultiSearch"))
1093 if(!strcmp(args + 4, hub->nativenick))
1095 prefix = sprintf2("$SR %s ", hub->nativenick);
1096 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1097 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1101 if((p2 = strchr(args, ':')) == NULL)
1104 addr.sin_family = AF_INET;
1105 if(!inet_aton(args, &addr.sin_addr))
1107 addr.sin_port = htons(atoi(p2));
1108 prefix = sprintf2("$SR %s ", hub->nativenick);
1109 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1110 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1111 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1114 minsize = maxsize = -1;
1123 if((*(p++) == 'T') && (minsize == 0))
1130 if((p2 = strchr(p, '?')) == NULL)
1145 if((*p2 == 0) || (*p2 == '$'))
1153 if(!dotth && !strncmp(p, "TTH:", 4))
1156 if((buf = base32decode(p + 4, &buflen)) == NULL)
1160 memcpy(hashtth, buf, 24);
1163 if((terms[termnum] = icmbstowcs(p, DCCHARSET)) != NULL)
1174 node = shareroot->child;
1176 for(i = 0; i < termnum; i++)
1182 if(node->f.b.type == FILE_REG)
1184 if((minsize >= 0) && (node->size < minsize))
1186 if((maxsize >= 0) && (node->size > maxsize))
1189 if(!skipcheck && dotth)
1191 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1196 for(i = 0; i < termnum; i++)
1200 if(wcsexists(node->name, terms[i]))
1204 } else if(node->child == NULL) {
1209 if(!skipcheck && (satisfied == termnum))
1211 if((buf = getdcpath(node, NULL)) != NULL)
1213 if(node->f.b.hastth)
1215 buf2 = base32encode(node->hashtth, 24);
1216 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1219 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1224 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1226 while(node->next == NULL)
1228 if((node = node->parent) == shareroot)
1232 if(node == shareroot)
1234 for(i = 0; i < termnum; i++)
1236 if(tersat[i] >= level)
1249 hubhandleaction(sk, fn, cmd, args);
1260 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1264 static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1268 struct socket *newsk;
1269 struct sockaddr_in addr;
1272 if((p = strchr(args, ' ')) == NULL)
1275 if(strcmp(args, hub->nativenick))
1277 addr.sin_family = AF_INET;
1279 if((p = strchr(args, ':')) == NULL)
1282 addr.sin_port = htons(atoi(p));
1283 if(!inet_aton(args, &addr.sin_addr))
1285 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1287 hubhandleaction(sk, fn, cmd, args);
1290 static void sendctm(struct socket *sk, char *nick)
1292 struct sockaddr *addr;
1297 if(sockgetremotename(tcpsock, &addr, &addrlen) < 0)
1299 if(addr->sa_family == AF_INET)
1300 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1302 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1306 static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1312 if((p = strchr(args, ' ')) == NULL)
1315 if(strcmp(p, hub->nativenick))
1318 expectpeer(args, fn);
1319 hubhandleaction(sk, fn, cmd, args);
1322 static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1325 struct fnetnode *node;
1330 for(node = fnetnodes; node != NULL; node = node->next)
1332 if(node->state == FNN_EST)
1335 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1336 hubhandleaction(sk, fn, cmd, args);
1339 static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1346 if((p2 = strchr(p, ' ')) == NULL)
1350 if((p2 = strchr(p, ' ')) == NULL)
1353 if(strcmp(p, "From:"))
1356 if((p2 = strstr(p, " $")) == NULL)
1360 hubrecvchat(fn->sk, fn, p, p2);
1361 hubhandleaction(sk, fn, cmd, args);
1364 static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1368 char *nick, *filename, *hubname;
1372 wchar_t *wnick, *wfile;
1376 if((p2 = strchr(p, ' ')) == NULL)
1381 if((p2 = strchr(p, 5)) == NULL)
1385 if((p2 = strchr(p, ' ')) == NULL)
1390 if((p2 = strchr(p, '/')) == NULL)
1395 if((p2 = strchr(p, 5)) == NULL)
1399 if((p2 = strstr(p, " (")) == NULL)
1402 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
1404 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1409 sr = newsrchres(&dcnet, wfile, wnick);
1410 if(sr->peernick != NULL)
1412 sr->peernick = swcsdup(wnick);
1417 if(!strncmp(hubname, "TTH:", 4))
1419 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1422 sr->hash = newhash(L"TTH", 24, buf);
1426 getfnetnode(sr->fn = fn);
1429 hubhandleaction(sk, fn, cmd, args);
1432 static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1434 /* Do nothing for now. */
1437 static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1440 struct wcspair *arg;
1444 for(arg = fn->args; arg != NULL; arg = arg->next)
1446 if(!wcscmp(arg->key, L"password"))
1449 if((arg == NULL) || ((mbspw = icwcstombs(arg->val, DCCHARSET)) == NULL))
1454 qstrf(sk, "$MyPass %s|", mbspw);
1456 fn->regstatus = FNNS_REG;
1457 hubhandleaction(sk, fn, cmd, args);
1460 static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1465 fn->regstatus = FNNS_OP;
1466 hubhandleaction(sk, fn, cmd, args);
1469 static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1471 struct dcexppeer *expect;
1473 if(peer->nativename != NULL)
1474 free(peer->nativename);
1475 peer->nativename = sstrdup(args);
1476 if(peer->wcsname != NULL)
1477 free(peer->wcsname);
1478 if((peer->wcsname = icmbstowcs(peer->nativename, DCCHARSET)) == NULL)
1485 for(expect = expected; expect != NULL; expect = expect->next)
1487 if(!strcmp(expect->nick, args))
1494 peer->fn = expect->fn;
1495 getfnetnode(peer->fn);
1496 freeexppeer(expect);
1501 static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1505 struct transfer *transfer;
1507 if((p = strchr(args, ' ')) == NULL)
1510 if(!strcmp(args, "Upload"))
1512 if(!strcmp(args, "Download"))
1516 if((peer->transfer == NULL) || (mydir != peer->direction))
1521 if(peer->direction == TRNSD_DOWN)
1524 if(peer->wcsname == NULL)
1529 peer->direction = mydir;
1530 if(peer->direction == TRNSD_UP)
1532 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1534 if((transfer = finddownload(peer->wcsname)) == NULL)
1539 transferattach(transfer, &dctransfer, peer);
1540 transfersetstate(transfer, TRNS_HS);
1542 transfersetnick(transfer, peer->wcsname);
1543 peer->transfer = transfer;
1546 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1547 if(peer->key != NULL)
1548 qstrf(sk, "$Key %s|", peer->key);
1549 if(peer->direction == TRNSD_DOWN)
1554 static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1557 struct transfer *transfer;
1559 if((p = strchr(args, ' ')) == NULL)
1562 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1564 key = dcmakekey(args);
1567 if(peer->wcsname == NULL)
1576 if((transfer = finddownload(peer->wcsname)) == NULL)
1578 peer->direction = TRNSD_UP;
1579 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1581 peer->direction = TRNSD_DOWN;
1582 transferattach(transfer, &dctransfer, peer);
1583 transfersetstate(transfer, TRNS_HS);
1585 transfersetnick(transfer, peer->wcsname);
1586 peer->transfer = transfer;
1587 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1588 qstrf(sk, "$Key %s|", key);
1590 if(peer->key != NULL)
1596 static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1601 static void startdl(struct dcpeer *peer)
1603 peer->state = PEER_TRNS;
1604 transferstartdl(peer->transfer, peer->sk);
1605 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1606 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1609 static void startul(struct dcpeer *peer)
1611 peer->state = PEER_TRNS;
1612 transferstartul(peer->transfer, peer->sk);
1613 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
1616 static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1619 struct transfer *transfer;
1621 if(peer->transfer == NULL)
1627 if(peer->transfer->size != size)
1629 transfersetsize(peer->transfer, size);
1630 transfer = peer->transfer;
1632 trytransferbypeer(transfer->fnet, transfer->peerid);
1636 qstr(peer->sk, "$Send|");
1639 static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1641 if(peer->fetchingtthl)
1643 peer->fetchingtthl = 0;
1648 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1650 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1651 resettransfer(peer->transfer);
1657 static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1659 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1661 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1662 resettransfer(peer->transfer);
1675 {"MyList.DcLst", &hmlistname, updatehmlist},
1676 {"files.xml", &xmllistname, updatexmllist},
1677 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1681 static int openfilelist(char *name)
1686 for(i = 0; lists[i].name != NULL; i++)
1688 if(!strcmp(name, lists[i].name))
1692 if(lists[i].name == NULL)
1695 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1697 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1700 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1707 static struct sharecache *findbytth(char *tth32)
1711 struct sharecache *node;
1713 if((buf = base32decode(tth32, &buflen)) == NULL)
1720 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1722 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1729 static struct sharecache *resdcpath(char *path, char *charset, char sep)
1731 struct sharecache *node;
1738 if((p2 = strchr(p, sep)) != NULL)
1740 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1747 static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1752 struct sharecache *node;
1753 struct socket *lesk;
1757 if(peer->transfer == NULL)
1762 if((p = strchr(args, '$')) == NULL)
1768 if((offset = (atoi(p) - 1)) < 0)
1773 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1775 qstr(sk, "$Error Could not send file list|");
1778 } else if(fd >= 0) {
1779 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1780 transfersetpath(peer->transfer, buf2);
1781 peer->transfer->flags.b.minislot = 1;
1785 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1787 qstrf(sk, "$Error File not in share|");
1791 if((fd = opensharecache(node)) < 0)
1793 qstrf(sk, "$Error %s|", strerror(errno));
1797 buf = getfspath(node);
1798 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1799 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1801 transfersetpath(peer->transfer, buf2);
1804 if(fstat(fd, &sb) < 0)
1807 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1808 qstrf(sk, "$Error|");
1812 if(sb.st_size < 65536)
1813 peer->transfer->flags.b.minislot = 1;
1814 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1815 qstr(sk, "$MaxedOut|");
1819 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1822 qstrf(sk, "$Error Offset out of range|");
1826 lesk = wrapsock(fd);
1827 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1829 qstrf(sk, "$FileLength %i|", peer->transfer->size);
1832 static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1834 if(peer->transfer == NULL)
1839 if(peer->transfer->localend == NULL)
1848 static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1853 size_t arrsize, arrdata;
1855 if(peer->supports != NULL)
1857 for(i = 0; peer->supports[i] != NULL; i++)
1858 free(peer->supports[i]);
1859 free(peer->supports);
1862 arrsize = arrdata = 0;
1866 if((p2 = strchr(p, ' ')) != NULL)
1870 addtobuf(arr, sstrdup(p));
1871 } while((p = p2) != NULL);
1872 addtobuf(arr, NULL);
1873 peer->supports = arr;
1876 static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1880 int start, numbytes;
1881 char *charset, *buf;
1883 struct sharecache *node;
1885 struct socket *lesk;
1887 if(peer->transfer == NULL)
1893 if((p2 = strchr(p, ' ')) == NULL)
1901 if((p2 = strchr(p, ' ')) == NULL)
1909 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1912 charset = DCCHARSET;
1913 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1914 initcompress(peer, CPRS_ZLIB);
1915 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1917 qstr(sk, "$Error Could not send file list|");
1919 } else if(fd >= 0) {
1920 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1921 transfersetpath(peer->transfer, buf2);
1922 peer->transfer->flags.b.minislot = 1;
1926 if((node = resdcpath(p, charset, '\\')) == NULL)
1928 qstr(sk, "$Error File not in cache|");
1931 if((fd = opensharecache(node)) < 0)
1933 qstrf(sk, "$Error %s|", strerror(errno));
1936 buf = getfspath(node);
1937 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1938 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1940 transfersetpath(peer->transfer, buf2);
1943 if(fstat(fd, &sb) < 0)
1946 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1947 qstr(sk, "$Error|");
1950 if(sb.st_size < 65536)
1951 peer->transfer->flags.b.minislot = 1;
1952 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
1953 qstr(sk, "$MaxedOut|");
1956 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1959 qstr(sk, "$Error Offset out of range|");
1962 if((numbytes < 0) || (start + numbytes > sb.st_size))
1963 numbytes = sb.st_size - start;
1964 lesk = wrapsock(fd);
1965 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
1967 qstrf(sk, "$Sending %i|", numbytes);
1971 static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1975 int start, numbytes;
1976 struct sharecache *node;
1978 struct socket *lesk;
1982 if(peer->transfer == NULL)
1987 if((argv = parseadc(args)) == NULL)
1992 if(parrlen(argv) < 4)
1997 start = atoi(argv[2]);
1998 numbytes = atoi(argv[3]);
2001 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2003 qstr(sk, "$Error Could not send file list|");
2005 } else if(fd >= 0) {
2006 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2007 transfersetpath(peer->transfer, wbuf);
2008 peer->transfer->flags.b.minislot = 1;
2012 if(!strncmp(argv[1], "TTH/", 4))
2014 if((node = findbytth(argv[1] + 4)) == NULL)
2016 qstr(sk, "$Error File not in cache|");
2020 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
2022 qstr(sk, "$Error File not in cache|");
2026 if((fd = opensharecache(node)) < 0)
2028 qstrf(sk, "$Error %s|", strerror(errno));
2031 buf = getfspath(node);
2032 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2033 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2035 transfersetpath(peer->transfer, wbuf);
2038 if(!strcmp(argv[0], "file"))
2040 for(i = 4; argv[i] != NULL; i++)
2042 if(!strcmp(argv[i], "ZL1"))
2043 initcompress(peer, CPRS_ZLIB);
2045 if(fstat(fd, &sb) < 0)
2047 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2048 qstr(sk, "$Error|");
2051 if(sb.st_size < 65536)
2052 peer->transfer->flags.b.minislot = 1;
2053 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2054 qstr(sk, "$MaxedOut|");
2057 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2059 qstr(sk, "$Error Offset out of range|");
2062 if((numbytes < 0) || (start + numbytes > sb.st_size))
2063 numbytes = sb.st_size - start;
2064 lesk = wrapsock(fd);
2065 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2068 qstr(sk, "$ADCSND");
2069 sendadc(sk, "file");
2070 sendadc(sk, argv[1]);
2071 sendadcf(sk, "%i", start);
2072 sendadcf(sk, "%i", numbytes);
2073 if(peer->compress == CPRS_ZLIB)
2077 } else if(!strcmp(argv[0], "tthl")) {
2079 * XXX: Implement full TTHL support.
2081 * In the meantime, this is better than nothing, since it at
2082 * least allows fetching of the TTH root if it isn't already
2087 qstr(sk, "$Error no TTHL data for virtual files|");
2090 qstr(sk, "$ADCSND");
2091 sendadc(sk, "tthl");
2092 sendadc(sk, argv[1]);
2096 sockqueue(sk, node->hashtth, 24);
2098 qstr(sk, "$Error Namespace not implemented|");
2108 static void handletthl(struct dcpeer *peer)
2112 while(peer->inbufdata >= 24)
2114 pushtigertree(&peer->tth, peer->inbuf);
2115 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
2116 peer->curread += 24;
2118 if(peer->curread >= peer->totalsize)
2120 peer->state = PEER_CMD;
2121 synctigertree(&peer->tth);
2122 restigertree(&peer->tth, buf);
2123 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2128 static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2131 int start, numbytes;
2133 if(peer->transfer == NULL)
2138 if((argv = parseadc(args)) == NULL)
2143 if(parrlen(argv) < 4)
2148 start = atoi(argv[2]);
2149 numbytes = atoi(argv[3]);
2150 if(!strcmp(argv[0], "tthl"))
2152 if((start != 0) || (numbytes % 24 != 0))
2154 /* Weird. Bail out. */
2158 peer->state = PEER_TTHL;
2159 peer->totalsize = numbytes;
2161 peer->fetchingtthl = 0;
2162 inittigertree(&peer->tth);
2164 } else if(!strcmp(argv[0], "file")) {
2165 if(start != peer->transfer->curpos)
2170 if(start + numbytes != peer->transfer->size)
2172 transfersetsize(peer->transfer, start + numbytes);
2177 if(peer->inbufdata > 0)
2179 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2180 peer->inbufdata = 0;
2181 transread(sk, peer);
2184 /* We certainly didn't request this...*/
2193 static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2197 if(peer->transfer == NULL)
2202 numbytes = atoi(args);
2203 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2205 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2210 if(peer->inbufdata > 0)
2212 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2213 peer->inbufdata = 0;
2214 transread(sk, peer);
2220 static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2225 hubhandleaction(sk, fn, cmd, args);
2229 static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2235 static int hubreqconn(struct fnetpeer *peer)
2240 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2245 if((hub = peer->fn->data) == NULL)
2250 if((mbsnick = icwcstombs(peer->id, DCCHARSET)) == NULL)
2251 return(1); /* Shouldn't happen, of course, but who knows... */
2254 sendctm(peer->fn->sk, mbsnick);
2255 expectpeer(mbsnick, peer->fn);
2257 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2263 static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2266 char *mbsstring, *mbsto;
2269 if((mbsto = icwcstombs(to, DCCHARSET)) == NULL)
2274 if((mbsstring = icwcstombs(string, DCCHARSET)) == NULL)
2279 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2286 if(strchr(mbsstring, '|') != NULL)
2297 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2299 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2302 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2309 static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2311 int minl, maxl, minr, maxr, retmin, retmax;
2316 findsizelimit(sexpr->l, &minl, &maxl);
2317 findsizelimit(sexpr->r, &minr, &maxr);
2318 retmin = (minl > minr)?minl:minr;
2319 if((maxl != -1) && (maxr != -1))
2320 retmax = (maxl < maxr)?maxl:maxr;
2329 findsizelimit(sexpr->l, &minl, &maxl);
2330 findsizelimit(sexpr->r, &minr, &maxr);
2331 retmin = (minl < minr)?minl:minr;
2332 if((maxl == -1) || (maxr == -1))
2335 retmax = (maxl > maxr)?maxl:maxr;
2338 findsizelimit(sexpr->l, &minl, &maxl);
2339 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2343 } else if((minl == 0) && (maxl != -1)) {
2346 } else if((minl != 0) && (maxl == -1)) {
2349 } else { /* This would yield two seperate intervals, which DC cannot handle */
2355 retmax = sexpr->d.n - 1;
2358 retmin = sexpr->d.n;
2359 retmax = sexpr->d.n;
2362 retmin = sexpr->d.n + 1;
2376 static struct hash *findsehash(struct sexpr *sexpr)
2378 struct hash *h1, *h2;
2383 if((h1 = findsehash(sexpr->l)) != NULL)
2385 if((h1 = findsehash(sexpr->r)) != NULL)
2389 h1 = findsehash(sexpr->l);
2390 h2 = findsehash(sexpr->r);
2395 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2396 return(sexpr->d.hash);
2403 static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2406 struct wcslist *list, *cur;
2407 char *sstr, *buf, *p;
2408 size_t sstrsize, sstrdata;
2409 struct sockaddr *name;
2411 int minsize, maxsize;
2415 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2417 list = findsexprstrs(srch->sexpr);
2418 findsizelimit(srch->sexpr, &minsize, &maxsize);
2419 hash = findsehash(srch->sexpr);
2420 if((minsize != 0) && (maxsize != -1))
2422 /* Choose either minsize or maxsize by trying to determine
2423 * which choice will be most restrictive. The result can be
2424 * approximative at best anyway, so don't try too hard... */
2425 if((50000000 - maxsize) > (minsize - 50000000))
2431 sstrsize = sstrdata = 0;
2432 if((hash != NULL) && (hash->len == 24))
2434 /* Prioritize hash searches above all else */
2435 bufcat(sstr, "F?T?0?9?TTH:", 12);
2436 buf = base32encode(hash->buf, hash->len);
2438 bufcat(sstr, buf, 39);
2443 sizebuf2(sstr, sstrdata + 32, 1);
2444 snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
2445 } else if(maxsize != -1) {
2446 sizebuf2(sstr, sstrdata + 32, 1);
2447 snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
2449 bufcat(sstr, "F?F?0?1?", 8);
2453 for(cur = list; cur != NULL; cur = cur->next)
2455 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2457 /* Can't find anything anyway if the search expression
2458 * requires characters outside DC's charset. There's
2459 * nothing technically wrong with the search itself,
2460 * however, so return success. This should be
2461 * considered as an optimization. */
2468 addtobuf(sstr, '$');
2470 * It probably doesn't hurt if buf contains any extra
2471 * dollar signs - it will just result in extra search
2472 * terms, and the extraneous results will be filtered by
2473 * the search layer anyway. It hurts if it contains any
2474 * pipes, though, so let's sell them for money.
2476 for(p = buf; *p; p++)
2481 bufcat(sstr, buf, strlen(buf));
2485 /* Will match all files... :-/ */
2486 addtobuf(sstr, '.');
2492 if(sockgetremotename(udpsock, &name, &namelen) < 0)
2494 flog(LOG_WARNING, "cannot get address of UDP socket");
2496 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
2500 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
2504 fn->lastsrch = time(NULL);
2512 #define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2513 struct command hubcmds[] =
2515 {"$Lock", cc(cmd_lock)},
2516 {"$HubName", cc(cmd_hubname)},
2517 {"$Hello", cc(cmd_hello)},
2518 {"$Quit", cc(cmd_quit)},
2519 {"$NickList", cc(cmd_nicklist)},
2520 {"$OpList", cc(cmd_oplist)},
2521 {"$MyINFO", cc(cmd_myinfo)},
2522 {"$ForceMove", cc(cmd_forcemove)},
2523 {"$Search", cc(cmd_search)},
2524 {"$MultiSearch", cc(cmd_search)},
2525 {"$ConnectToMe", cc(cmd_connecttome)},
2526 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2527 {"$GetNetInfo", cc(cmd_getnetinfo)},
2528 {"$To:", cc(cmd_to)},
2529 {"$SR", cc(cmd_sr)},
2530 {"$UserCommand", cc(cmd_usercommand)},
2531 {"$GetPass", cc(cmd_getpass)},
2532 {"$LogedIn", cc(cmd_logedin)}, /* sic */
2536 struct command peercmds[] =
2538 {"$MyNick", cc(cmd_mynick)},
2539 {"$Lock", cc(cmd_peerlock)},
2540 {"$Direction", cc(cmd_direction)},
2541 {"$Key", cc(cmd_key)},
2542 {"$FileLength", cc(cmd_filelength)},
2543 {"$Error", cc(cmd_error)},
2544 {"$MaxedOut", cc(cmd_maxedout)},
2545 {"$Get", cc(cmd_get)},
2546 {"$Send", cc(cmd_send)},
2547 {"$Supports", cc(cmd_supports)},
2548 {"$GetBlock", cc(cmd_getblock)},
2549 {"$UGetBlock", cc(cmd_getblock)},
2550 {"$GetZBlock", cc(cmd_getblock)},
2551 {"$UGetZBlock", cc(cmd_getblock)},
2552 {"$ADCGET", cc(cmd_adcget)},
2553 {"$ADCSND", cc(cmd_adcsnd), 1},
2554 {"$Sending", cc(cmd_sending), 1},
2559 static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2561 CBUNREG(transfer, trans_filterout, peer);
2564 peer->transfer = NULL;
2568 static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2576 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2578 if(sockqueuesize(peer->sk) < 65536)
2580 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2582 if(peer->compress == CPRS_NONE)
2584 sockqueue(peer->sk, buf, bufsize);
2585 } else if(peer->compress == CPRS_ZLIB) {
2586 cstr = peer->cprsdata;
2587 cstr->next_in = buf;
2588 cstr->avail_in = bufsize;
2589 while(cstr->avail_in > 0)
2591 cstr->next_out = outbuf;
2592 cstr->avail_out = sizeof(outbuf);
2593 if((ret = deflate(cstr, 0)) != Z_OK)
2595 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2599 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2604 if(peer->state == PEER_SYNC)
2606 if(peer->compress == CPRS_ZLIB)
2608 cstr = peer->cprsdata;
2609 cstr->next_in = NULL;
2613 cstr->next_out = outbuf;
2614 cstr->avail_out = sizeof(outbuf);
2615 ret = deflate(cstr, Z_FINISH);
2616 if((ret != Z_OK) && (ret != Z_STREAM_END))
2618 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2622 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2623 } while(ret != Z_STREAM_END);
2629 peer->state = PEER_CMD;
2631 transfersetstate(transfer, TRNS_HS);
2632 socksettos(peer->sk, confgetint("fnet", "fnptos"));
2633 peer->sk->writecb = NULL;
2640 static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2642 peer->state = PEER_SYNC;
2643 dctransgotdata(transfer, peer);
2646 static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2648 if(transferdatasize(transfer) < 65536)
2649 peer->sk->ignread = 0;
2652 static void transread(struct socket *sk, struct dcpeer *peer)
2656 struct transfer *transfer;
2658 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2660 if(peer->transfer == NULL)
2666 transferputdata(peer->transfer, buf, bufsize);
2668 if(peer->transfer->curpos >= peer->transfer->size)
2670 transfer = peer->transfer;
2671 transferdetach(transfer);
2672 transferendofdata(transfer);
2675 if(transferdatasize(peer->transfer) > 65535)
2679 static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2681 struct transfer *transfer;
2683 if((transfer = peer->transfer) == NULL)
2688 transferdetach(transfer);
2689 transferendofdata(transfer);
2692 static void transwrite(struct socket *sk, struct dcpeer *peer)
2694 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2696 if(peer->transfer == NULL)
2701 dctransgotdata(peer->transfer, peer);
2704 static void udpread(struct socket *sk, void *data)
2706 char *buf, *p, *p2, *hashbuf;
2707 size_t buflen, hashlen;
2708 char *nick, *filename, *hubname;
2710 struct fnetnode *fn, *myfn;
2713 wchar_t *wnick, *wfile;
2716 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2718 buf = srealloc(buf, buflen + 1);
2720 if(!strncmp(buf, "$SR ", 4))
2724 if((p2 = strchr(p, ' ')) == NULL)
2732 if((p2 = strchr(p, 5)) == NULL)
2739 if((p2 = strchr(p, ' ')) == NULL)
2747 if((p2 = strchr(p, '/')) == NULL)
2755 if((p2 = strchr(p, 5)) == NULL)
2762 if((p2 = strstr(p, " (")) == NULL)
2768 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
2773 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2781 if(!strncmp(hubname, "TTH:", 4))
2783 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2786 hash = newhash(L"TTH", 24, hashbuf);
2790 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2792 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
2794 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
2807 sr = newsrchres(&dcnet, wfile, wnick);
2808 if(sr->peernick != NULL)
2810 sr->peernick = swcsdup(wnick);
2816 getfnetnode(sr->fn = myfn);
2825 static void hubread(struct socket *sk, struct fnetnode *fn)
2832 hub = (struct dchub *)fn->data;
2833 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2835 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2837 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2838 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2840 p = hub->inbuf + hub->inbufdata;
2841 hub->inbufdata += datalen;
2842 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2845 newqcmd(&hub->queue, hub->inbuf);
2846 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2847 datalen = hub->inbufdata;
2852 static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2857 static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2863 if((buf = icwcstombs(newnick, DCCHARSET)) == NULL)
2865 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2870 if(hub == NULL) /* Not yet connected */
2875 if(hub->nativenick != NULL)
2876 free(hub->nativenick);
2877 hub->nativenick = buf;
2881 static struct dchub *newdchub(struct fnetnode *fn)
2885 new = smalloc(sizeof(*new));
2886 memset(new, 0, sizeof(*new));
2888 if(hubsetnick(fn, fn->mynick))
2889 fnetsetnick(fn, L"DoldaConnectUser-IN");
2890 /* IN as in Invalid Nick */
2894 static struct dcpeer *newdcpeer(struct socket *sk)
2898 new = smalloc(sizeof(*new));
2899 memset(new, 0, sizeof(*new));
2900 new->transfer = NULL;
2912 static void freedcpeer(struct dcpeer *peer)
2915 struct qcommand *qcmd;
2920 if(peer->next != NULL)
2921 peer->next->prev = peer->prev;
2922 if(peer->prev != NULL)
2923 peer->prev->next = peer->next;
2924 if(peer->transfer != NULL)
2926 if(peer->transfer->dir == TRNSD_UP)
2927 peer->transfer->close = 1;
2928 if(peer->transfer->dir == TRNSD_DOWN)
2929 resettransfer(peer->transfer);
2930 transferdetach(peer->transfer);
2932 if(peer->sk->data == peer)
2933 peer->sk->data = NULL;
2934 peer->sk->readcb = NULL;
2935 peer->sk->writecb = NULL;
2936 peer->sk->errcb = NULL;
2939 if(peer->supports != NULL)
2941 for(i = 0; peer->supports[i] != NULL; i++)
2942 free(peer->supports[i]);
2943 free(peer->supports);
2945 if(peer->inbuf != NULL)
2947 if(peer->key != NULL)
2949 if(peer->wcsname != NULL)
2950 free(peer->wcsname);
2951 if(peer->nativename != NULL)
2952 free(peer->nativename);
2953 if(peer->fn != NULL)
2954 putfnetnode(peer->fn);
2955 while((qcmd = ulqcmd(&peer->queue)) != NULL)
2961 static void hubconnect(struct fnetnode *fn)
2963 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
2964 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
2966 fn->data = newdchub(fn);
2971 static void hubdestroy(struct fnetnode *fn)
2974 struct qcommand *qcmd;
2976 hub = (struct dchub *)fn->data;
2979 if(fn->sk->data == fn)
2981 fn->sk->data = NULL;
2987 while((qcmd = ulqcmd(&hub->queue)) != NULL)
2989 if(hub->nativename != NULL)
2990 free(hub->nativename);
2991 if(hub->nativenick != NULL)
2992 free(hub->nativenick);
2993 if(hub->inbuf != NULL)
2998 static wchar_t *dcbasename(wchar_t *filename)
3002 if((ret = wcsrchr(filename, L'\\')) != NULL)
3007 static struct transferiface dctransfer =
3009 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3010 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3011 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3012 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3015 static struct fnet dcnet =
3018 .connect = hubconnect,
3019 .destroy = hubdestroy,
3020 .setnick = hubsetnick,
3021 .reqconn = hubreqconn,
3022 .sendchat = hubsendchat,
3023 .search = hubsearch,
3024 .filebasename = dcbasename
3027 static void peerread(struct socket *sk, struct dcpeer *peer)
3031 struct command *cmd;
3033 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3035 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3036 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3038 peer->inbufdata += datalen;
3039 if(peer->state == PEER_CMD)
3042 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3045 newqcmd(&peer->queue, peer->inbuf);
3046 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3048 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3051 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3054 peer->state = PEER_STOP;
3058 } else if(peer->state == PEER_TTHL) {
3063 static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3068 static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3070 struct dcpeer *peer;
3077 peer = newdcpeer(sk);
3080 sk->readcb = (void (*)(struct socket *, void *))peerread;
3081 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3083 socksettos(sk, confgetint("fnet", "fnptos"));
3089 static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3091 struct dcpeer *peer;
3093 peer = newdcpeer(newsk);
3095 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3096 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3098 socksettos(newsk, confgetint("fnet", "fnptos"));
3101 static void updatehmlist(void)
3103 int i, lev, ic, ret;
3104 struct sharecache *node;
3105 char *buf, *buf2, numbuf[32];
3106 size_t bufsize, bufdata;
3110 buf = smalloc(bufsize = 65536);
3111 node = shareroot->child;
3116 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3118 for(i = 0; i < lev; i++)
3120 bufcat(buf, buf2, strlen(buf2));
3122 if(node->f.b.type == FILE_REG)
3125 sprintf(numbuf, "%i", node->size);
3126 bufcat(buf, numbuf, strlen(numbuf));
3133 if((node->child != NULL) && !ic)
3137 } else if(node->next != NULL) {
3140 while(node->next == NULL)
3143 node = node->parent;
3144 if(node == shareroot)
3147 if(node == shareroot)
3152 if(hmlistname != NULL)
3157 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3158 if((fd = mkstemp(hmlistname)) < 0)
3160 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3165 * I do not want to implement a good Huffman encoder, and it's not
3166 * like Huffman encoding actually yields any impressive results
3167 * for DC file lists anyway, so I'll just output a bogus
3168 * tree. Implement a good encoder if you want to.
3170 write(fd, "HE3\r\0", 5);
3171 write(fd, &bufdata, 4);
3173 write(fd, &ibuf, 2);
3175 for(i = 0; i < 256; i++)
3178 write(fd, &ibuf, 1);
3180 for(i = 0; i < 256; i++)
3182 for(buf2 = buf; bufdata > 0;)
3184 if((ret = write(fd, buf2, bufdata)) < 0)
3186 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3197 static struct xmlent
3204 /* {L'\'', L"""}, Emulate DC++ escaping by omitting this. */
3208 static wchar_t *escapexml(wchar_t *src)
3210 static wchar_t *buf = NULL;;
3213 size_t bufsize, bufdata;
3219 bufsize = bufdata = 0;
3220 for(; *src != L'\0'; src++)
3223 if((c > 0) && (c < 32))
3225 bufcat(buf, L"&#", 2);
3226 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3227 bufcat(buf, nbuf, ret);
3228 addtobuf(buf, L';');
3230 for(ent = entities; ent->ent != NULL; ent++)
3234 bufcat(buf, ent->ent, wcslen(ent->ent));
3238 if(ent->ent == NULL)
3239 addtobuf(buf, *src);
3242 addtobuf(buf, L'\0');
3246 static void updatexmllist(void)
3250 char cidbuf[14], *namebuf;
3252 struct sharecache *node;
3254 if(xmllistname != NULL)
3256 unlink(xmllistname);
3259 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3260 if((fd = mkstemp(xmllistname)) < 0)
3262 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3267 if((fs = fdopen(fd, "w")) == NULL)
3269 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3270 unlink(xmllistname);
3276 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3277 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3278 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3280 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, DCIDFULL);
3282 node = shareroot->child;
3286 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3288 for(i = 0; i < lev; i++)
3290 if(node->child != NULL)
3292 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3297 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3298 if(node->f.b.hastth)
3300 hashbuf = base32encode(node->hashtth, 24);
3301 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3304 fprintf(fs, "/>\r\n");
3306 while(node->next == NULL)
3308 node = node->parent;
3309 if(node == shareroot)
3314 for(i = 0; i < lev; i++)
3316 fprintf(fs, "</Directory>\r\n");
3319 if(node == shareroot)
3325 #ifdef DCPP_MASQUERADE
3326 fprintf(fs, "</FileListing>");
3328 fprintf(fs, "</FileListing>\r\n");
3333 static void updatexmlbz2list(void)
3342 if(xmllistname == NULL)
3344 if((in = fopen(xmllistname, "r")) == NULL)
3346 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3349 if(xmlbz2listname != NULL)
3351 unlink(xmlbz2listname);
3352 free(xmlbz2listname);
3354 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3355 if((fd = mkstemp(xmlbz2listname)) < 0)
3357 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3358 free(xmlbz2listname);
3359 xmlbz2listname = NULL;
3363 if((real = fdopen(fd, "w")) == NULL)
3365 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3367 unlink(xmlbz2listname);
3368 free(xmlbz2listname);
3369 xmlbz2listname = NULL;
3373 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3376 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3378 unlink(xmlbz2listname);
3379 free(xmlbz2listname);
3380 xmlbz2listname = NULL;
3386 bufdata = fread(buf, 1, sizeof(buf), in);
3387 BZ2_bzWrite(&err, out, buf, bufdata);
3390 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3394 static int shareupdate(unsigned long long uusharesize, void *data)
3402 static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3405 struct command *cmd;
3407 if((p = strchr(qcmd->string, ' ')) != NULL)
3409 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3411 if(!strcmp(cmd->name, qcmd->string))
3414 if(cmd->handler != NULL)
3415 cmd->handler(sk, data, qcmd->string, p);
3418 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3422 static int run(void)
3424 struct fnetnode *fn, *nextfn;
3426 struct dcpeer *peer, *nextpeer;
3427 struct qcommand *qcmd;
3431 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3434 if(fn->fnet != &dcnet)
3436 if(fn->data == NULL)
3438 hub = (struct dchub *)fn->data;
3439 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3441 if(*qcmd->string == '$')
3443 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3444 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3445 } else if(*qcmd->string != 0) {
3446 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3453 for(peer = peers; peer != NULL; peer = nextpeer)
3455 nextpeer = peer->next;
3456 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3458 if(*qcmd->string == '$')
3459 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3468 static void preinit(int hup)
3475 static int updateudpport(struct configvar *var, void *uudata)
3477 struct sockaddr_in addr;
3478 struct socket *newsock;
3480 memset(&addr, 0, sizeof(addr));
3481 addr.sin_family = AF_INET;
3482 addr.sin_port = htons(var->val.num);
3483 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3485 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3488 newsock->readcb = udpread;
3495 static int updatetcpport(struct configvar *var, void *uudata)
3497 struct sockaddr_in addr;
3498 struct socket *newsock;
3500 memset(&addr, 0, sizeof(addr));
3501 addr.sin_family = AF_INET;
3502 addr.sin_port = htons(var->val.num);
3503 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3504 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3511 static int init(int hup)
3513 struct sockaddr_in addr;
3517 GCBREG(sharechangecb, shareupdate, NULL);
3522 addr.sin_family = AF_INET;
3523 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3524 addr.sin_port = htons(confgetint("dc", "udpport"));
3525 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3527 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3530 udpsock->readcb = udpread;
3531 addr.sin_port = htons(confgetint("dc", "tcpport"));
3532 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3533 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3534 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3535 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3536 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3541 static void terminate(void)
3543 if(hmlistname != NULL)
3548 if(xmllistname != NULL)
3550 unlink(xmllistname);
3553 if(xmlbz2listname != NULL)
3555 unlink(xmlbz2listname);
3556 free(xmlbz2listname);
3560 static struct configvar myvars[] =
3562 {CONF_VAR_STRING, "desc", {.str = L""}},
3563 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3564 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3565 {CONF_VAR_INT, "udpport", {.num = 0}},
3566 {CONF_VAR_INT, "tcpport", {.num = 0}},
3570 static struct module me =
3579 .terminate = terminate,