/***************************************************************************** * * $Id$ * Purpose .................: Fidonet binkp protocol * Binkp protocol copyright : Dima Maloff. * ***************************************************************************** * Copyright (C) 1997-2005 * * Michiel Broek FIDO: 2:280/2802 * Beekmansbos 10 * 1971 BV IJmuiden * the Netherlands * * This file is part of MBSE BBS. * * This BBS is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * MBSE BBS is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with MBSE BBS; see the file COPYING. If not, write to the Free * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *****************************************************************************/ #include "../config.h" #include "../lib/mbselib.h" #include "../lib/users.h" #include "../lib/nodelist.h" #include "../lib/mbsedb.h" #include "ttyio.h" #include "session.h" #include "statetbl.h" #include "config.h" #include "emsi.h" #include "bopenfile.h" #include "respfreq.h" #include "filelist.h" #include "opentcp.h" #include "rdoptions.h" #include "lutil.h" #include "binkp.h" #include "config.h" #include "md5b.h" #include "inbound.h" #include "callstat.h" #include "mbcico.h" /* * Safe characters for binkp filenames, the rest will be escaped. */ #define BNKCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789@&=+%$-_.!()#|" static char *bstate[] = { (char *)"M_NUL", (char *)"M_ADR", (char *)"M_PWD", (char *)"M_FILE", (char *)"M_OK", (char *)"M_EOB", (char *)"M_GOT", (char *)"M_ERR", (char *)"M_BSY", (char *)"M_GET", (char *)"M_SKIP" }; extern char *tempinbound; extern char *ttystat[]; extern int Loaded; extern pid_t mypid; extern struct sockaddr_in peeraddr; extern int most_debug; extern int laststat; extern int crashme; int gotblock = 0; extern unsigned int sentbytes; extern unsigned int rcvdbytes; typedef enum {RxWaitF, RxAccF, RxReceD, RxWriteD, RxEOB, RxDone} RxType; typedef enum {TxGNF, TxTryR, TxReadS, TxWLA, TxDone} TxType; typedef enum {Ok, Failure, Continue} TrType; typedef enum {No, Can, Want, Active} OptionState; typedef enum {NoState, Sending, IsSent, Got, Skipped, Get} FileState; typedef enum {InitTransfer, Switch, Receive, Transmit, DeinitTransfer} FtType; typedef enum {CompNone, CompGZ, CompBZ2, CompPLZ} CompType; // static char *txstate[] = { (char *)"TxGNF", (char *)"TxTryR", (char *)"TxReadS", (char *)"TxWLA", (char *)"TxDone" }; static char *rxstate[] = { (char *)"RxWaitF", (char *)"RxAccF", (char *)"RxReceD", (char *)"RxWriteD", (char *)"RxEOB", (char *)"RxDone" }; #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) static char *opstate[] = { (char *)"No", (char *)"Can", (char *)"Want", (char *)"Active" }; #endif static char *cpstate[] = { (char *)"No", (char *)"GZ", (char *)"BZ2", (char *)"PLZ" }; static time_t Timer; int ext_rand = 0; the_queue *tql = NULL; /* The Queue List */ file_list *tosend = NULL; /* Files to send */ file_list *respond = NULL; /* Requests honored */ binkp_list *bll = NULL; /* Files to send with status */ static binkp_list *cursend = NULL; /* Current file being transmitted */ struct timeval txtvstart; /* Transmitter start time */ struct timeval txtvend; /* Transmitter end time */ struct timeval rxtvstart; /* Receiver start time */ struct timeval rxtvend; /* Receiver end time */ int compress_init(int type); int do_compress(int type, char *dst, int *dst_len, char *src, int *src_len, int finish, void *data); void compress_deinit(int type, void *data); void compress_abort(int type, void *data); int decompress_init(int type); int do_decompress(int type, char *dst, int *dst_len, char *src, int *src_len, void *data); int decompress_deinit(int type, void *data); int decompress_abort(int type, void *data); #define ZBLKSIZE 1024 /* read/write file buffer size */ struct binkprec { int Role; /* 1=orig, 0=answer */ int RxState; /* Receiver state */ int TxState; /* Transmitter state */ int FtState; /* File transfer state */ /* Option flags */ int CRAMflag; /* CRAM authentication */ /* Session state */ int Secure; /* Secure session */ int Major; /* Major protocol version */ int Minor; /* Minor protocol version */ unsigned char *MD_Challenge; /* Received challenge data */ int PLZwe; /* Zlib packet compression */ int PLZthey; /* Zlib packet compression */ int cmpblksize; /* Ideal next blocksize */ /* Receiver buffer */ char *rxbuf; /* Receiver buffer */ int GotFrame; /* Frame complete flag */ int rxlen; /* Frame length */ int cmd; /* Frame command flag */ int blklen; /* Frame blocklength */ unsigned short header; /* Frame header */ int rc; /* General return code */ int rsize; /* Receiver filesize */ int roffs; /* Receiver offset */ char *rname; /* Receiver filename */ time_t rtime; /* Receiver filetime */ FILE *rxfp; /* Receiver file */ off_t rxbytes; /* Receiver bytecount */ int rxpos; /* Receiver position */ int rxcompressed; /* Receiver compressed bytes */ char *ropts; /* Receiver M_FILE optional args */ int rmode; /* Receiver compression mode */ struct timezone tz; /* Timezone */ char *txbuf; /* Transmitter buffer */ int txlen; /* Transmitter file length */ FILE *txfp; /* Transmitter file */ int txpos; /* Transmitter position */ int stxpos; /* Transmitter start position */ int txcompressed; /* Transmitter compressed bytes */ int tmode; /* Transmitter compression mode */ int tfsize; /* Transmitter filesize */ int local_EOB; /* Local EOB sent */ int remote_EOB; /* Got EOB from remote */ int messages; /* Messages sent + rcvd */ unsigned int nethold; /* Netmail on hold */ unsigned int mailhold; /* Packed mail on hold */ int batchnr; int msgs_on_queue; /* Messages on the queue */ int buggyIrex; /* Buggy Irex detected */ int txcpos; /* Transmitter compressed position */ #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) int EXTCMDwe; /* EXTCMD flag */ int EXTCMDthey; #endif #ifdef HAVE_ZLIB_H int GZwe; /* GZ compression flag */ int GZthey; #endif #ifdef HAVE_BZLIB_H int BZ2we; /* BZ2 compression flag */ int BZ2they; #endif int NRwe; /* NR mode */ int NRthey; int NDwe; /* ND mode */ int NDthey; int NDAwe; /* NDA mode */ int NDAthey; }; void *z_idata = NULL; /* Data for zstream */ void *z_odata = NULL; /* Data for zstream */ char *z_obuf; /* Compression buffer */ struct binkprec bp; /* Global structure */ /* * Prototypes */ TrType binkp_receiver(void); /* Receiver routine */ TrType binkp_transmitter(void); /* Transmitter routine */ int binkp_send_frame(int, char *, int); /* Send cmd/data frame */ int binkp_send_command(int, ...); /* Send command frame */ void binkp_settimer(int); /* Set timeout timer */ int binkp_expired(void); /* Timer expired? */ int binkp_banner(int); /* Send system banner */ int binkp_send_comp_opts(void); /* Send compression options */ void binkp_set_comp_state(void); /* Set compression state */ int binkp_recv_command(char *, unsigned int *, int *); /* Receive command frame */ void parse_m_nul(char *); /* Parse M_NUL message */ int binkp_poll_frame(void); /* Poll for a frame */ void binkp_add_message(char *frame); /* Add cmd frame to queue */ int binkp_process_messages(void); /* Process the queue */ char *unix2binkp(char *); /* Binkp -> Unix escape */ char *binkp2unix(char *); /* Unix -> Binkp escape */ void fill_binkp_list(binkp_list **, file_list *, off_t); /* Build pending files */ int binkp_pendingfiles(void); /* Count pending files */ void binkp_clear_filelist(int); /* Clear current filelist */ static int orgbinkp(void); /* Originate session state */ static int ansbinkp(void); /* Answer session state */ static int file_transfer(void); /* File transfer state */ /************************************************************************************/ /* * General entry point */ int binkp(int role) { int rc = 0; Syslog('+', "Binkp: start session"); memset(&bp, 0, sizeof(bp)); bp.Role = role; bp.CRAMflag = FALSE; bp.Secure = FALSE; bp.Major = 1; bp.Minor = 0; bp.MD_Challenge = NULL; bp.rxbuf = calloc(MAX_BLKSIZE + 3, sizeof(unsigned char)); bp.txbuf = calloc(MAX_BLKSIZE + 3, sizeof(unsigned char)); bp.rname = calloc(512, sizeof(char)); bp.ropts = calloc(512, sizeof(char)); bp.rxfp = NULL; bp.local_EOB = FALSE; bp.remote_EOB = FALSE; bp.msgs_on_queue = 0; bp.cmpblksize = SND_BLKSIZE; #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) bp.EXTCMDwe = bp.EXTCMDthey = No; /* Default */ #endif #ifdef HAVE_ZLIB_H if (localoptions & NOPLZ) bp.PLZthey = bp.PLZwe = No; else bp.PLZthey = bp.PLZwe = Can; z_obuf = calloc(MAX_BLKSIZE + 3, sizeof(unsigned char)); if (localoptions & NOGZBZ2) bp.GZthey = bp.GZwe = No; else { bp.GZthey = bp.GZwe = Can; bp.EXTCMDwe = bp.EXTCMDthey = Can; } #else bp.PLZthey = bp.PLZwe = No; #endif #ifdef HAVE_BZLIB_H if (localoptions & NOGZBZ2) bp.BZ2they = bp.BZ2we = No; else { bp.BZ2they = bp.BZ2we = Can; bp.EXTCMDwe = bp.EXTCMDthey = Can; } #endif bp.buggyIrex = FALSE; bp.NRwe = No; bp.NRthey = No; bp.NDwe = No; bp.NDthey = No; bp.NDAwe = No; bp.NDAthey = No; if (role == 1) { if (orgbinkp()) { rc = MBERR_SESSION_ERROR; } } else { if (ansbinkp()) { rc = MBERR_SESSION_ERROR; } } if (rc) { Syslog('!', "Binkp: session handshake failed"); goto binkpend; } if (((Loaded && nodes.NoBinkp11) || bp.buggyIrex) && (bp.Major == 1) && (bp.Minor != 0)) { Syslog('+', "Binkp: forcing downgrade to binkp/1.0 protocol"); bp.Major = 1; bp.Minor = 0; } if (localoptions & NOFREQS) session_flags &= ~SESSION_WAZOO; else session_flags |= SESSION_WAZOO; bp.FtState = InitTransfer; rc = file_transfer(); binkpend: /* * Deinit */ if (bp.rname) free(bp.rname); if (bp.MD_Challenge) free(bp.MD_Challenge); if (bp.rxbuf) free(bp.rxbuf); if (bp.txbuf) free(bp.txbuf); if (bp.ropts) free(bp.ropts); #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) if ((bp.rmode != CompNone) && z_idata) decompress_deinit(bp.rmode, z_idata); if ((bp.tmode != CompNone) && z_odata) compress_deinit(bp.tmode, z_odata); if (z_obuf) free(z_obuf); #endif rc = abs(rc); Syslog('+', "Binkp: session finished, rc=%d", rc); return rc; } /************************************************************************************/ /* * Originate Session Setup */ SM_DECL(orgbinkp, (char *)"orgbinkp") SM_STATES ConnInit, WaitConn, SendPasswd, WaitAddr, AuthRemote, IfSecure, WaitOk, Opts SM_NAMES (char *)"ConnInit", (char *)"WaitConn", (char *)"SendPasswd", (char *)"WaitAddr", (char *)"AuthRemote", (char *)"IfSecure", (char *)"WaitOk", (char *)"Opts" SM_EDECL faddr *primary; char *p, *q, *pwd; int i, rc = 0, cmd, dupe, SendPass = FALSE, akas = 0; unsigned int bufl; fa_list **tmp, *tmpa; faddr *fa, ra; callstat *cst; SM_START(ConnInit) SM_STATE(ConnInit) SM_PROCEED(WaitConn) SM_STATE(WaitConn) Loaded = FALSE; Syslog('+', "Binkp: node %s", ascfnode(remote->addr, 0x1f)); IsDoing("Connect binkp %s", ascfnode(remote->addr, 0xf)); rc = binkp_banner(TRUE); if (rc) { SM_ERROR; } /* * Build a list of aka's to send, the primary aka first. */ ra.zone = remote->addr->zone; ra.net = remote->addr->net; ra.node = remote->addr->node; ra.point = remote->addr->point; primary = bestaka_s(remote->addr); p = xstrcpy(ascfnode(primary, 0x1f)); /* * Add all other aka's exept primary aka. */ for (i = 0; i < 40; i++) { if ((CFG.aka[i].zone) && (CFG.akavalid[i]) && ((CFG.aka[i].zone != primary->zone) || (CFG.aka[i].net != primary->net) || (CFG.aka[i].node != primary->node) || (CFG.aka[i].point!= primary->point))) { p = xstrcat(p, (char *)" "); p = xstrcat(p, aka2str(CFG.aka[i])); } } rc = binkp_send_command(MM_ADR, "%s", p); free(p); tidy_faddr(primary); if (rc) { SM_ERROR; } SM_PROCEED(WaitAddr) SM_STATE(WaitAddr) for (;;) { if ((rc = binkp_recv_command(bp.rxbuf, &bufl, &cmd))) { Syslog('!', "Binkp: error receiving remote info"); SM_ERROR; } if (cmd) { if (bp.rxbuf[0] == MM_ADR) { p = xstrcpy(bp.rxbuf + 1); tidy_falist(&remote); remote = NULL; tmp = &remote; for (q = strtok(p, " "); q; q = strtok(NULL, " ")) { if ((fa = parsefnode(q))) { dupe = FALSE; for (tmpa = remote; tmpa; tmpa = tmpa->next) { if ((tmpa->addr->zone == fa->zone) && (tmpa->addr->net == fa->net) && (tmpa->addr->node == fa->node) && (tmpa->addr->point == fa->point) && (strcmp(tmpa->addr->domain, fa->domain) == 0)) { dupe = TRUE; Syslog('b', "Binkp: double address %s", ascfnode(tmpa->addr, 0x1f)); break; } } if (!dupe) { cst = getstatus(fa); if (cst->trystat) laststat = cst->trystat; *tmp = (fa_list*)malloc(sizeof(fa_list)); (*tmp)->next = NULL; (*tmp)->addr = fa; tmp = &((*tmp)->next); } } else { Syslog('!', "Binkp: unparsable remote address: \"%s\"", printable(q, 0)); binkp_send_command(MM_ERR, "Unparsable address \"%s\"", printable(q, 0)); SM_ERROR; } } free(p); tmp = &remote; while (*tmp) { if (nodelock((*tmp)->addr, mypid)) { Syslog('+', "address : %s is locked, removed from aka list",ascfnode((*tmp)->addr,0x1f)); tmpa=*tmp; *tmp=(*tmp)->next; free(tmpa); } else { /* * With the loaded flag we prevent removing the noderecord * when the remote presents us an address we don't know about. */ akas++; Syslog('+', "address : %s",ascfnode((*tmp)->addr,0x1f)); if (!Loaded) { if (noderecord((*tmp)->addr)) Loaded = TRUE; } tmp = &((*tmp)->next); } } if (akas == 0) { binkp_send_command(MM_BSY, "All aka's busy"); Syslog('+', "Binkp: abort, all aka's are busy"); SM_ERROR; } history.aka.zone = remote->addr->zone; history.aka.net = remote->addr->net; history.aka.node = remote->addr->node; history.aka.point = remote->addr->point; snprintf(history.aka.domain, 13, "%s", printable(remote->addr->domain, 0)); SM_PROCEED(SendPasswd) } else if (bp.rxbuf[0] == MM_BSY) { Syslog('!', "Binkp: M_BSY \"%s\"", printable(bp.rxbuf +1, 0)); SM_ERROR; } else if (bp.rxbuf[0] == MM_ERR) { Syslog('!', "Binkp: M_ERR \"%s\"", printable(bp.rxbuf +1, 0)); SM_ERROR; } else if (bp.rxbuf[0] == MM_NUL) { parse_m_nul(bp.rxbuf +1); } else { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } else { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } SM_STATE(SendPasswd) if (Loaded && strlen(nodes.Spasswd)) { pwd = xstrcpy(nodes.Spasswd); SendPass = TRUE; } else { pwd = xstrcpy((char *)"-"); } if (bp.MD_Challenge) { char *tp = NULL; tp = MD_buildDigest(pwd, bp.MD_Challenge); if (!tp) { Syslog('!', "Unable to build MD5 digest"); binkp_send_command(MM_ERR, "CRAM authentication failed, internal error"); SM_ERROR; } bp.CRAMflag = TRUE; rc = binkp_send_command(MM_PWD, "%s", tp); free(tp); } else { rc = binkp_send_command(MM_PWD, "%s", pwd); } free(pwd); if (rc) { SM_ERROR; } SM_PROCEED(AuthRemote) SM_STATE(AuthRemote) rc = 0; for (tmpa = remote; tmpa; tmpa = tmpa->next) { if ((tmpa->addr->zone == ra.zone) && (tmpa->addr->net == ra.net) && (tmpa->addr->node == ra.node) && (tmpa->addr->point == ra.point)) { rc = 1; } } if (rc) { SM_PROCEED(IfSecure) } else { Syslog('!', "Binkp: error, the wrong node is reached"); binkp_send_command(MM_ERR, "No AKAs in common or all AKAs busy"); SM_ERROR; } SM_STATE(IfSecure) SM_PROCEED(WaitOk) SM_STATE(WaitOk) for (;;) { if ((rc = binkp_recv_command(bp.rxbuf, &bufl, &cmd))) { Syslog('!', "Binkp: error waiting for remote acknowledge"); SM_ERROR; } if (cmd) { if (bp.rxbuf[0] == MM_OK) { Syslog('b', "Binkp: M_OK \"%s\"", printable(bp.rxbuf +1, 0)); if (SendPass) bp.Secure = TRUE; Syslog('+', "Binkp: %s%sprotected session", bp.CRAMflag ? "MD5 ":"", bp.Secure ? "":"un"); SM_PROCEED(Opts) } else if (bp.rxbuf[0] == MM_BSY) { Syslog('!', "Binkp: M_BSY \"%s\"", printable(bp.rxbuf +1, 0)); SM_ERROR; } else if (bp.rxbuf[0] == MM_ERR) { Syslog('!', "Binkp: M_ERR \"%s\"", printable(bp.rxbuf +1, 0)); SM_ERROR; } else if (bp.rxbuf[0] == MM_NUL) { parse_m_nul(bp.rxbuf +1); } else { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } else { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } SM_STATE(Opts) IsDoing("Binkp to %s", ascfnode(remote->addr, 0xf)); binkp_set_comp_state(); SM_SUCCESS; SM_END SM_RETURN /************************************************************************************/ /* * Answer Session Setup */ SM_DECL(ansbinkp, (char *)"ansbinkp") SM_STATES ConnInit, WaitConn, WaitAddr, IsPasswd, WaitPwd, PwdAck, Opts SM_NAMES (char *)"ConnInit", (char *)"WaitConn", (char *)"WaitAddr", (char *)"IsPasswd", (char *)"WaitPwd", (char *)"PwdAck", (char *)"Opts" SM_EDECL char *p, *q, *pw; int i, rc, cmd, dupe, we_have_pwd = FALSE, akas = 0; unsigned int bufl; fa_list **tmp, *tmpa; faddr *fa; callstat *cst; SM_START(ConnInit) SM_STATE(ConnInit) SM_PROCEED(WaitConn) SM_STATE(WaitConn) Loaded = FALSE; if (strncmp(SockR("SBBS:0;"), "100:2,1", 7) == 0) { Syslog('+', "Binkp: system is closed, sending M_BSY"); binkp_send_command(MM_BSY, "This system is closed, try again later"); SM_ERROR; } if (!CFG.NoMD5 && ((bp.MD_Challenge = MD_getChallenge(NULL, &peeraddr)) != NULL)) { /* * Answering site MUST send CRAM message as very first M_NUL */ char s[MD5_DIGEST_LEN*2+15]; /* max. length of opt string */ strcpy(s, "OPT "); MD_toString(s + strlen(s), bp.MD_Challenge[0], bp.MD_Challenge+1); bp.CRAMflag = TRUE; if ((rc = binkp_send_command(MM_NUL, "%s", s))) { SM_ERROR; } } if ((rc = binkp_banner(FALSE))) { SM_ERROR; } p = xstrcpy((char *)""); for (i = 0; i < 40; i++) { if ((CFG.aka[i].zone) && (CFG.akavalid[i])) { p = xstrcat(p, (char *)" "); p = xstrcat(p, aka2str(CFG.aka[i])); } } rc = binkp_send_command(MM_ADR, "%s", p); free(p); if (rc) { SM_ERROR; } SM_PROCEED(WaitAddr) SM_STATE(WaitAddr) for (;;) { if ((rc = binkp_recv_command(bp.rxbuf, &bufl, &cmd))) { Syslog('!', "Binkp: error waiting for remote info"); SM_ERROR; } if (cmd) { if (bp.rxbuf[0] == MM_ADR) { p = xstrcpy(bp.rxbuf +1); tidy_falist(&remote); remote = NULL; tmp = &remote; for (q = strtok(p, " "); q; q = strtok(NULL, " ")) { if ((fa = parsefnode(q))) { dupe = FALSE; for (tmpa = remote; tmpa; tmpa = tmpa->next) { if ((tmpa->addr->zone == fa->zone) && (tmpa->addr->net == fa->net) && (tmpa->addr->node == fa->node) && (tmpa->addr->point == fa->point) && (strcmp(tmpa->addr->domain, fa->domain) == 0)) { dupe = TRUE; Syslog('b', "Binkp: double address %s", ascfnode(tmpa->addr, 0x1f)); break; } } if (!dupe) { cst = getstatus(fa); if (cst->trystat) laststat = cst->trystat; *tmp = (fa_list*)malloc(sizeof(fa_list)); (*tmp)->next = NULL; (*tmp)->addr = fa; tmp = &((*tmp)->next); } } else { Syslog('!', "Binkp: unparsable remote address: \"%s\"", printable(q, 0)); binkp_send_command(MM_ERR, "Unparsable address \"%s\"", printable(q, 0)); SM_ERROR; } } tmp = &remote; while (*tmp) { if (nodelock((*tmp)->addr, mypid)) { Syslog('+', "address : %s is locked, removed from aka list",ascfnode((*tmp)->addr,0x1f)); tmpa=*tmp; *tmp=(*tmp)->next; free(tmpa); } else { /* * With the loaded flag we prevent removing the noderecord * when the remote presents us an address we don't know about. */ akas++; Syslog('+', "address : %s",ascfnode((*tmp)->addr,0x1f)); if (!Loaded) { if (noderecord((*tmp)->addr)) Loaded = TRUE; } tmp = &((*tmp)->next); } } if (akas == 0) { binkp_send_command(MM_BSY, "All aka's busy"); Syslog('+', "Binkp: abort, all aka's are busy"); SM_ERROR; } for (tmpa = remote; tmpa; tmpa = tmpa->next) { if (((nlent = getnlent(tmpa->addr))) && (nlent->pflag != NL_DUMMY)) { Syslog('+', "Binkp: remote is a listed system"); UserCity(mypid, nlent->sysop, nlent->location); break; } } if (nlent) rdoptions(Loaded); history.aka.zone = remote->addr->zone; history.aka.net = remote->addr->net; history.aka.node = remote->addr->node; history.aka.point = remote->addr->point; snprintf(history.aka.domain, 13, "%s", printable(remote->addr->domain, 0)); SM_PROCEED(IsPasswd) } else if (bp.rxbuf[0] == MM_ERR) { Syslog('!', "Binkp: M_ERR \"%s\"", printable(bp.rxbuf +1, 0)); SM_ERROR; } else if (bp.rxbuf[0] == MM_NUL) { parse_m_nul(bp.rxbuf +1); } else if (bp.rxbuf[0] <= MM_MAX) { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } else { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } SM_STATE(IsPasswd) if (Loaded && strlen(nodes.Spasswd)) { we_have_pwd = TRUE; } SM_PROCEED(WaitPwd) SM_STATE(WaitPwd) for (;;) { if ((rc = binkp_recv_command(bp.rxbuf, &bufl, &cmd))) { Syslog('!', "Binkp: error waiting for password"); SM_ERROR; } if (cmd) { if (bp.rxbuf[0] == MM_PWD) { SM_PROCEED(PwdAck) } else if (bp.rxbuf[0] == MM_ERR) { Syslog('!', "Binkp: M_ERR \"%s\"", printable(bp.rxbuf +1, 0)); SM_ERROR; } else if (bp.rxbuf[0] == MM_NUL) { parse_m_nul(bp.rxbuf +1); } else if (bp.rxbuf[0] <= MM_MAX) { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } else { binkp_send_command(MM_ERR, "Unexpected frame"); SM_ERROR; } } SM_STATE(PwdAck) if (we_have_pwd) { pw = xstrcpy(nodes.Spasswd); } else { pw = xstrcpy((char *)"-"); } if ((strncmp(bp.rxbuf +1, "CRAM-", 5) == 0) && bp.CRAMflag) { char *sp; sp = MD_buildDigest(pw, bp.MD_Challenge); if (sp != NULL) { if (strcmp(bp.rxbuf +1, sp)) { Syslog('+', "Binkp: bad MD5 crypted password"); binkp_send_command(MM_ERR, "Bad password"); free(sp); sp = NULL; free(pw); SM_ERROR; } else { free(sp); sp = NULL; if (we_have_pwd) bp.Secure = TRUE; } } else { free(pw); Syslog('!', "Binkp: could not build MD5 digest"); binkp_send_command(MM_ERR, "*** Internal error ***"); SM_ERROR; } } else if ((strcmp(bp.rxbuf +1, pw) == 0)) { if (we_have_pwd) bp.Secure = TRUE; } else { free(pw); Syslog('?', "Binkp: password error: expected \"%s\", got \"%s\"", nodes.Spasswd, bp.rxbuf +1); binkp_send_command(MM_ERR, "Bad password"); SM_ERROR; } free(pw); Syslog('+', "Binkp: %s%sprotected session", bp.CRAMflag ? "MD5 ":"", bp.Secure ? "":"un"); inbound_open(remote->addr, bp.Secure, TRUE); binkp_send_command(MM_OK, "%ssecure", bp.Secure ? "":"non-"); SM_PROCEED(Opts) SM_STATE(Opts) IsDoing("Binkp from %s", ascfnode(remote->addr, 0xf)); if (localoptions & NOGZBZ2) { #ifdef HAVE_ZLIB_H bp.GZwe = bp.GZthey = No; Syslog('b', "Binkp: no GZ compression for this node"); #endif #ifdef HAVE_BZLIB_H bp.BZ2we = bp.BZ2they = No; Syslog('b', "Binkp: no BZ2 compression for this node"); #endif } #ifdef HAVE_ZLIB_H if (localoptions & NOPLZ) { bp.PLZwe = bp.PLZthey = No; Syslog('b', "Binkp: no PLZ compression for this node"); } #endif binkp_send_comp_opts(); binkp_set_comp_state(); SM_SUCCESS; SM_END SM_RETURN /************************************************************************************/ /* * File Transfer State */ /* * We do not use the normal state machine because that produces a lot * of debug logging that will drive up the CPU usage. */ int file_transfer(void) { int rc = 0; TrType Trc = Ok; for (;;) { switch (bp.FtState) { case InitTransfer: binkp_settimer(BINKP_TIMEOUT); bp.RxState = RxWaitF; bp.TxState = TxGNF; bp.FtState = Switch; bp.messages = 0; Syslog('b', "Binkp: last session was %d", laststat); break; case Switch: if ((bp.RxState == RxDone) && (bp.TxState == TxDone)) { bp.FtState = DeinitTransfer; break; } rc = binkp_poll_frame(); if (rc == -1) { Syslog('b', "Binkp: receiver error detected"); bp.rc = rc = MBERR_FTRANSFER; bp.FtState = DeinitTransfer; break; } else if (rc == 1) { bp.FtState = Receive; break; } /* * Check if there is room in the output buffer */ if (WAITPUTGET(-1) & 2) { bp.FtState = Transmit; break; } if (binkp_expired()) { Syslog('+', "Binkp: transfer timeout"); bp.rc = 1; bp.FtState = DeinitTransfer; break; } /* * Nothing done, release */ msleep(1); break; case Receive: Trc = binkp_receiver(); if (Trc == Ok) { if (bp.local_EOB && bp.remote_EOB) bp.FtState = Transmit; else bp.FtState = Switch; } else if (Trc == Failure) { Syslog('+', "Binkp: receiver failure"); bp.rc = 1; bp.FtState = DeinitTransfer; } break; case Transmit: Trc = binkp_transmitter(); if (Trc == Ok) { bp.FtState = Switch; } else if (Trc == Failure) { Syslog('+', "Binkp: transmitter failure"); bp.rc = 1; bp.FtState = DeinitTransfer; } break; case DeinitTransfer:/* * In case of a transfer error the filelist is not yet cleared */ binkp_clear_filelist(bp.rc); if (bp.rc) return MBERR_FTRANSFER; else return 0; break; } } } /************************************************************************************/ /* * Receiver routine */ TrType binkp_receiver(void) { struct statfs sfs; int written; off_t rxbytes; int bcmd, rc = 0; int rc1 = 0, nget = bp.blklen, zavail, nput; char zbuf[ZBLKSIZE]; char *buf = bp.rxbuf; // Syslog('b', "Binkp: receiver %s", rxstate[bp.RxState]); if (bp.RxState == RxWaitF) { if (! bp.GotFrame) return Ok; bp.GotFrame = FALSE; bp.rxlen = 0; bp.header = 0; if (! bp.cmd) { Syslog('b', "Binkp: got %d bytes DATA frame in %s state, ignored", bp.blklen, rxstate[bp.RxState]); bp.blklen = 0; return Ok; } bp.blklen = 0; bcmd = bp.rxbuf[0]; if (bcmd == MM_ERR) { Syslog('+', "Binkp: got M_ERR \"%s\"", printable(bp.rxbuf +1, 0)); bp.RxState = RxDone; return Failure; } else if ((bcmd == MM_GET) || (bcmd == MM_GOT) || (bcmd == MM_SKIP)) { binkp_add_message(bp.rxbuf); return Ok; } else if (bcmd == MM_NUL) { parse_m_nul(bp.rxbuf +1); return Ok; } else if (bcmd == MM_EOB) { if ((bp.Major == 1) && (bp.Minor != 0)) { if (bp.local_EOB && bp.remote_EOB) { Syslog('b', "Binkp: receiver detects both sides in EOB state"); if ((bp.messages < 3) || binkp_pendingfiles()) { Syslog('b', "Binkp: receiver detected end of session or pendingfiles, stay in RxWaitF"); return Ok; } else { bp.batchnr++; bp.local_EOB = FALSE; bp.remote_EOB = FALSE; bp.messages = 0; bp.TxState = TxGNF; bp.RxState = RxWaitF; Syslog('+', "Binkp: receiver starts batch %d", bp.batchnr + 1); binkp_clear_filelist(0); return Ok; } } else { return Ok; } } else { Syslog('b', "Binkp/1.0 mode and got M_EOB, goto RxEOB"); bp.RxState = RxEOB; return Ok; } } else if (bcmd == MM_FILE) { bp.RxState = RxAccF; return Continue; } else if (bcmd <= MM_MAX) { Syslog('+', "Binkp: ERROR got unexpected %s frame in %s state", bstate[bcmd], rxstate[bp.RxState]); bp.RxState = RxDone; return Failure; } else { Syslog('+', "Binkp: got unexpected unknown frame, ignore"); return Ok; } } else if (bp.RxState == RxAccF) { if (((bp.rmode == CompGZ) || (bp.rmode == CompBZ2)) && z_idata) { decompress_deinit(bp.rmode, z_idata); z_idata = NULL; } bp.rmode = CompNone; if (strlen(bp.rxbuf) < 512) { snprintf(bp.rname, 512, "%s", strtok(bp.rxbuf+1, " \n\r")); bp.rsize = atoi(strtok(NULL, " \n\r")); bp.rtime = atoi(strtok(NULL, " \n\r")); bp.roffs = atoi(strtok(NULL, " \n\r")); snprintf(bp.ropts, 512, "%s", printable(strtok(NULL, " \n\r\0"), 0)); if (strcmp((char *)"GZ", bp.ropts) == 0) bp.rmode = CompGZ; else if (strcmp((char *)"BZ2", bp.ropts) == 0) bp.rmode = CompBZ2; } else { /* * Corrupted command, in case this was serious, send the M_GOT back so it's * deleted at the remote. */ Syslog('+', "Binkp: got corrupted FILE frame, size %d bytes", strlen(bp.rxbuf)); bp.RxState = RxWaitF; rc = binkp_send_command(MM_GOT, bp.rxbuf +1); if (rc) return Failure; else return Ok; } Syslog('+', "Binkp: receive file \"%s\" date %s size %ld offset %ld comp %s", bp.rname, date(bp.rtime), bp.rsize, bp.roffs, cpstate[bp.rmode]); (void)binkp2unix(bp.rname); rxbytes = bp.rxbytes; /* * Open file if M_FILE frame has offset 0 * Else the file is already open. */ if (bp.roffs && (bp.roffs == rxbytes)) { Syslog('b', "Binkp: offset == rxbytes, don't open file again"); if (fseek(bp.rxfp, bp.roffs, SEEK_SET) == 0) Syslog('b', "Binkp: file position set to %ld", bp.roffs); else WriteError("$Binkp: can't fseek to %ld", bp.roffs); } else { bp.rxfp = bopenfile(binkp2unix(bp.rname), bp.rtime, bp.rsize, &rxbytes); } bp.rxbytes = rxbytes; bp.rxcompressed = 0; gettimeofday(&rxtvstart, &bp.tz); bp.rxpos = bp.roffs; if (enoughspace(CFG.freespace) == 0) { Syslog('+', "Binkp: low diskspace, sending BSY"); binkp_send_command(MM_BSY, "Low diskspace, try again later"); bp.RxState = RxDone; bp.TxState = TxDone; bp.rc = MBERR_FTRANSFER; return Failure; } if (statfs(tempinbound, &sfs) == 0) { if ((bp.rsize / (sfs.f_bsize + 1)) >= sfs.f_bfree) { Syslog('!', "Binkp: only %u blocks free (need %u) in %s for this file", sfs.f_bfree, (unsigned int)(bp.rsize / (sfs.f_bsize + 1)), tempinbound); bclosefile(FALSE); bp.rxfp = NULL; /* Force SKIP command */ } } if (bp.rsize == bp.rxbytes) { /* * We already got this file, send GOT so it will * be deleted at the remote. */ Syslog('+', "Binkp: already got %s, sending GOT", bp.rname); rc = binkp_send_command(MM_GOT, "%s %ld %ld", bp.rname, bp.rsize, bp.rtime); bp.RxState = RxWaitF; bp.rxfp = NULL; if (rc) return Failure; else return Ok; } else if ((bp.rxbytes < bp.rsize) && ((bp.roffs == 0) || (bp.roffs == -1)) && bp.rxbytes) { Syslog('+', "Binkp: partial file present, resync"); rc = binkp_send_command(MM_GET, "%s %ld %ld %ld", bp.rname, bp.rsize, bp.rtime, bp.rxbytes); bp.RxState = RxWaitF; if (rc) return Failure; else return Ok; } else if (!bp.rxfp) { /* * Some error, request to skip it */ Syslog('+', "Binkp: error file %s, sending SKIP", bp.rname); rc = binkp_send_command(MM_SKIP, "%s %ld %ld", bp.rname, bp.rsize, bp.rtime); bp.RxState = RxWaitF; if (rc) return Failure; else return Ok; } else { Syslog('b', "Binkp: rsize=%d, rxbytes=%d, roffs=%d, goto RxReceD", bp.rsize, bp.rxbytes, bp.roffs); bp.RxState = RxReceD; return Ok; } } else if (bp.RxState == RxReceD) { if (! bp.GotFrame) return Ok; if (! bp.cmd) { bp.RxState = RxWriteD; return Continue; } bp.GotFrame = FALSE; bp.rxlen = 0; bp.header = 0; bp.blklen = 0; bcmd = bp.rxbuf[0]; if (bcmd == MM_ERR) { Syslog('+', "Binkp: got M_ERR \"%s\"", printable(bp.rxbuf +1, 0)); bp.RxState = RxDone; return Failure; } else if ((bcmd == MM_GET) || (bcmd == MM_GOT) || (bcmd == MM_SKIP)) { binkp_add_message(bp.rxbuf); return Ok; } else if (bcmd == MM_NUL) { parse_m_nul(bp.rxbuf +1); return Ok; } else if (bcmd == MM_FILE) { Syslog('+', "Binkp: partial received file, saving"); bclosefile(FALSE); bp.rxfp = NULL; bp.RxState = RxAccF; return Continue; } else if (bcmd <= MM_MAX) { Syslog('+', "Binkp: ERROR got unexpected %s frame in %s state", bstate[bcmd], rxstate[bp.RxState]); bp.RxState = RxDone; return Failure; } else { Syslog('+', "Binkp: got unexpected unknown frame, ignore"); return Ok; } } else if (bp.RxState == RxWriteD) { if (bp.rxfp == NULL) { /* * After sending M_GET for restart at offset, the file is closed * but some data frames may be underway, so ignore these. */ Syslog('b', "Binkp: file is closed, ignore data"); bp.GotFrame = FALSE; bp.rxlen = 0; bp.header = 0; bp.RxState = RxReceD; return Ok; } written = 0; if ((bp.rmode == CompBZ2) || (bp.rmode == CompGZ)) { /* * Receive stream compressed data */ if (z_idata == NULL) { Syslog('b', "Binkp: decompress_init start"); if (decompress_init(bp.rmode)) { Syslog('+', "Binkp: can't init decompress"); bp.RxState = RxDone; return Failure; } else Syslog('b', "Binkp: decompress_init success"); } while (nget) { zavail = ZBLKSIZE; nput = nget; rc1 = do_decompress(bp.rmode, zbuf, &zavail, buf, &nput, z_idata); if (rc1 < 0) { Syslog('+', "Binkp: decompress %s error %d", bp.rname, rc1); bp.RxState = RxDone; return Failure; } if (zavail != 0 && fwrite(zbuf, zavail, 1, bp.rxfp) < 1) { Syslog('+', "$Binkp: write error"); decompress_abort(bp.rmode, z_idata); z_idata = NULL; bp.RxState = RxDone; return Failure; } buf += nput; nget -= nput; written += zavail; bp.rxcompressed += zavail - nput; } bp.blklen = written; /* Correct physical to virtual blocklength */ if (rc1 == 1) { if ((rc1 = decompress_deinit(bp.rmode, z_idata)) < 0) Syslog('+', "Binkp: decompress_deinit retcode %d", rc1); else Syslog('b', "Binkp: decompress_deinit done"); z_idata = NULL; } } else { written = fwrite(bp.rxbuf, 1, bp.blklen, bp.rxfp); } bp.GotFrame = FALSE; bp.rxlen = 0; bp.header = 0; if (bp.blklen && (bp.blklen != written)) { Syslog('+', "Binkp: ERROR file write error"); bp.RxState = RxDone; bp.blklen = 0; return Failure; } bp.blklen = 0; bp.rxpos += written; if (bp.rxpos == bp.rsize) { rc = binkp_send_command(MM_GOT, "%s %ld %ld", bp.rname, bp.rsize, bp.rtime); bclosefile(TRUE); bp.rxpos = bp.rxpos - bp.rxbytes; gettimeofday(&rxtvend, &bp.tz); #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) if (bp.rxcompressed) Syslog('+', "Binkp: %s", compress_stat(bp.rxpos, bp.rxcompressed)); #endif Syslog('+', "Binkp: OK %s", transfertime(rxtvstart, rxtvend, bp.rxpos, FALSE)); rcvdbytes += bp.rxpos; bp.RxState = RxWaitF; if (rc) return Failure; else return Ok; } bp.RxState = RxReceD; return Ok; } else if (bp.RxState == RxEOB) { if (! bp.GotFrame) return Ok; bp.GotFrame = FALSE; bp.rxlen = 0; bp.header = 0; bp.blklen = 0; if (bp.cmd) { bcmd = bp.rxbuf[0]; if (bcmd == MM_ERR) { Syslog('+', "Binkp: got M_ERR \"%s\"", printable(bp.rxbuf +1, 0)); bp.RxState = RxDone; return Failure; } else if ((bcmd == MM_GET) || (bcmd == MM_GOT) || (bcmd == MM_SKIP)) { binkp_add_message(bp.rxbuf); return Ok; } else if (bcmd == MM_NUL) { parse_m_nul(bp.rxbuf +1); return Ok; } else if (bcmd <= MM_MAX) { Syslog('+', "Binkp: ERROR got unexpected %s frame in %s state", bstate[bcmd], rxstate[bp.RxState]); bp.RxState = RxDone; return Failure; } else { Syslog('+', "Binkp: got unexpected unknown frame, ignore"); return Ok; } } else { Syslog('+', "Binkp: ERROR got unexpected data frame in %s state", rxstate[bp.RxState]); bp.RxState = RxDone; return Failure; } } else if (bp.RxState == RxDone) { return Ok; } /* * Cannot be here */ bp.RxState = RxDone; return Failure; } /************************************************************************************/ /* * Transmitter routine */ TrType binkp_transmitter(void) { int rc = 0, eof = FALSE, rc1 = 0; #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) int sz; #endif char *extra; char *nonhold_mail; fa_list *eff_remote; file_list *tsl; static binkp_list *tmp; // Syslog('b', "Binkd: transmitter %s", txstate[bp.TxState]); if (bp.TxState == TxGNF) { /* * If we do not have a filelist yet, create one. */ if (tosend == NULL) { Syslog('b', "Creating filelist"); nonhold_mail = (char *)ALL_MAIL; bp.nethold = bp.mailhold = 0L; cursend = NULL; /* * If remote doesn't have the 8.3 flag set, allow long names */ if (!nodes.FNC) remote_flags &= ~SESSION_FNC; eff_remote = remote; tosend = create_filelist(eff_remote, nonhold_mail, 0); if ((respond = respond_wazoo()) != NULL) { for (tsl = tosend; tsl->next; tsl = tsl ->next); tsl->next = respond; Syslog('b', "Binkp: added requested files"); } /* * Build a new filelist from the existing filelist. * This one is special for binkp behaviour. */ for (tsl = tosend; tsl; tsl = tsl->next) { if ((tsl->remote != NULL) && (bp.batchnr < 20)) fill_binkp_list(&bll, tsl, 0L); } if ((bp.nethold || bp.mailhold) || (bp.batchnr == 0)) { Syslog('+', "Binkp: mail %ld, files %ld bytes", bp.nethold, bp.mailhold); if ((rc = binkp_send_command(MM_NUL, "TRF %ld %ld", bp.nethold, bp.mailhold))) { bp.TxState = TxDone; return Failure; } } } for (tmp = bll; tmp; tmp = tmp->next) { if (tmp->state == NoState) { /* * There is something to send */ struct flock txflock; txflock.l_type = F_RDLCK; txflock.l_whence = 0; txflock.l_start = 0L; txflock.l_len = 0L; bp.txfp = fopen(tmp->local, "r"); if (bp.txfp == NULL) { if ((errno == ENOENT) || (errno == EINVAL)) { Syslog('+', "Binkp: file %s doesn't exist, removing", MBSE_SS(tmp->local)); tmp->state = Got; } else { WriteError("$Binkp: can't open %s, skipping", MBSE_SS(tmp->local)); tmp->state = Skipped; } break; } if (fcntl(fileno(bp.txfp), F_SETLK, &txflock) != 0) { WriteError("$Binkp: can't lock file %s, skipping", MBSE_SS(tmp->local)); fclose(bp.txfp); bp.txfp = NULL; tmp->state = Skipped; break; } bp.tmode = CompNone; extra = (char *)""; if ((tmp->compress == CompGZ) || (tmp->compress == CompBZ2)) { bp.tmode = tmp->compress; Syslog('b', "Binkp: compress_init start"); if ((rc1 = compress_init(bp.tmode))) { Syslog('+', "Binkp: compress_init failed (rc=%d)", rc1); tmp->compress = CompNone; bp.tmode = CompNone; } else { if (bp.tmode == CompBZ2) extra = (char *)" BZ2"; else if (bp.tmode == CompGZ) extra = (char *)" GZ"; Syslog('b', "Binkp: compress_init ok, extra=%s", extra); } } bp.txpos = bp.txcpos = bp.stxpos = tmp->offset; bp.txcompressed = 0; bp.tfsize = tmp->size; Syslog('+', "Binkp: send \"%s\" as \"%s\"", MBSE_SS(tmp->local), MBSE_SS(tmp->remote)); Syslog('+', "Binkp: size %u bytes, dated %s, comp %s", (unsigned int)tmp->size, date(tmp->date), cpstate[bp.tmode]); rc = binkp_send_command(MM_FILE, "%s %u %d %d%s", MBSE_SS(tmp->remote), (unsigned int)tmp->size, (int)tmp->date, (unsigned int)tmp->offset, extra); if (rc) { bp.TxState = TxDone; return Failure; } gettimeofday(&txtvstart, &bp.tz); tmp->state = Sending; cursend = tmp; bp.TxState = TxTryR; return Continue; } /* if state == NoState */ } /* for */ if (tmp == NULL) { /* * No more files */ rc = binkp_send_command(MM_EOB, ""); bp.TxState = TxWLA; if (rc) return Failure; else return Continue; } return Ok; } else if (bp.TxState == TxTryR) { if (bp.msgs_on_queue == 0) { bp.TxState = TxReadS; return Continue; } else { if (binkp_process_messages()) { bp.TxState = TxDone; return Failure; } else return Continue; } } else if (bp.TxState == TxReadS) { bp.TxState = TxTryR; #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) if ((bp.tmode == CompBZ2) || (bp.tmode == CompGZ)) { int nput = 0; /* number of compressed bytes */ int nget = 0; /* number of read uncompressed bytes from buffer */ int ocnt; /* number of bytes compressed by one call */ int rc2; off_t fleft; sz = bp.tfsize - ftell(bp.txfp); if (bp.cmpblksize < sz) sz = bp.cmpblksize; while (TRUE) { ocnt = bp.cmpblksize - nput; nget = sz; if (nget > ZBLKSIZE) nget = ZBLKSIZE; fleft = bp.tfsize - ftell(bp.txfp); fseek(bp.txfp, bp.txpos, SEEK_SET); nget = fread(z_obuf, 1, nget, bp.txfp); rc2 = do_compress(bp.tmode, bp.txbuf + nput, &ocnt, z_obuf, &nget, fleft ? 0 : 1, z_odata); // Syslog('b', "Binkp: do_compress ocnt=%d nget=%d fleft=%d rc=%d", ocnt, nget, fleft, rc2); if (rc2 == -1) { Syslog('+', "Binkp: compression error rc=%d", rc2); return Failure; } bp.txpos += nget; bp.txcpos += ocnt; nput += ocnt; /* * Compressed block is filled for transmission */ if ((nput == bp.cmpblksize) || (fleft == 0)) { bp.txlen = nput; rc = binkp_send_frame(FALSE, bp.txbuf, bp.txlen); if (rc) return Failure; sentbytes += bp.txlen; if (rc2 == 1) { /* * Last compressed block is sent, set eof. */ eof = TRUE; bp.txcompressed = bp.tfsize - bp.txcpos; } break; } } } else { #endif /* * Send uncompressed block */ fseek(bp.txfp, bp.txpos, SEEK_SET); bp.txlen = fread(bp.txbuf, 1, bp.cmpblksize, bp.txfp); eof = feof(bp.txfp); if (ferror(bp.txfp)) { WriteError("$Binkp: error reading from file"); bp.TxState = TxDone; cursend->state = Skipped; return Failure; } if (bp.txlen) { bp.txpos += bp.txlen; sentbytes += bp.txlen; rc = binkp_send_frame(FALSE, bp.txbuf, bp.txlen); if (rc) return Failure; } #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) } #endif if ((bp.txlen == 0) || eof) { /* * calculate time needed and bytes transferred */ gettimeofday(&txtvend, &bp.tz); /* * Close transmitter file */ fclose(bp.txfp); bp.txfp = NULL; if (bp.txpos >= 0) { bp.stxpos = bp.txpos - bp.stxpos; #ifdef HAVE_ZLIB_H if (bp.txcompressed) Syslog('+', "Binkp: %s", compress_stat(bp.stxpos, bp.txcompressed)); #endif Syslog('+', "Binkp: OK %s", transfertime(txtvstart, txtvend, bp.stxpos, TRUE)); } else { Syslog('+', "Binkp: transmitter skipped file after %ld seconds", txtvend.tv_sec - txtvstart.tv_sec); } if ((bp.tmode == CompBZ2) || (bp.tmode == CompGZ)) { compress_deinit(bp.tmode, z_odata); z_odata = NULL; bp.tmode = CompNone; Syslog('b', "Binkp: compress_deinit done"); } cursend->state = IsSent; cursend = NULL; bp.TxState = TxGNF; return Ok; } return Ok; } else if (bp.TxState == TxWLA) { if ((bp.msgs_on_queue == 0) && (binkp_pendingfiles() == 0)) { if ((bp.RxState >= RxEOB) && (bp.Major == 1) && (bp.Minor == 0)) { bp.TxState = TxDone; if (bp.local_EOB && bp.remote_EOB) { Syslog('b', "Binkp: binkp/1.0 session seems complete"); bp.RxState = RxDone; } binkp_clear_filelist(rc); return Ok; } if ((bp.RxState < RxEOB) && (bp.Major == 1) && (bp.Minor == 0)) { bp.TxState = TxWLA; return Ok; } if ((bp.Major == 1) && (bp.Minor != 0)) { if (bp.local_EOB && bp.remote_EOB) { /* * We did send EOB and got a EOB */ if (bp.messages < 3) { /* * Nothing sent anymore, finish */ Syslog('b', "Binkp: binkp/1.1 session seems complete"); bp.RxState = RxDone; bp.TxState = TxDone; } else { /* * Start new batch */ bp.batchnr++; bp.local_EOB = FALSE; bp.remote_EOB = FALSE; bp.messages = 0; bp.TxState = TxGNF; bp.RxState = RxWaitF; Syslog('+', "Binkp: transmitter starts batch %d", bp.batchnr + 1); binkp_clear_filelist(rc); return Ok; /* Continue is not good here, troubles with binkd on slow links. */ } } binkp_clear_filelist(rc); return Ok; } } if (bp.msgs_on_queue) { if (binkp_process_messages()) { return Failure; } else { return Continue; } } return Ok; } else if (bp.TxState == TxDone) { return Ok; } /* * Cannot be here */ bp.TxState = TxDone; return Failure; } /************************************************************************************/ /* * Functions */ /* * Send a binkp frame */ int binkp_send_frame(int cmd, char *buf, int len) { unsigned short header = 0; int rc, id; #ifdef HAVE_ZLIB_H int rcz, last; uLongf zlen; char *zbuf; if ((len >= BINKP_PLZ_BLOCK) && (bp.PLZwe == Active)) { WriteError("Can't send block of %d bytes in PLZ mode", len); return 1; } #endif if (cmd) { header = ((BINKP_CONTROL_BLOCK + len) & 0xffff); bp.messages++; id = buf[0]; if (id == MM_EOB) { bp.local_EOB = TRUE; } if (len == 1) Syslog('b', "Binkp: send %s", bstate[id]); else Syslog('b', "Binkp: send %s %s", bstate[id], printable(buf +1, len -1)); } else { header = ((BINKP_DATA_BLOCK + len) & 0xffff); Syslog('b', "Binkp: send data (%d)", len); } #ifdef HAVE_ZLIB_H last = bp.cmpblksize; /* * Only use compression for DATA blocks larger then 20 bytes. * Also, don't send PLZ blocks if GZ or BZ2 mode is active. * This means if the current file is send uncompressed we still * might send some blocks compressed. The receiver needs to deal * with this if it showed PLZ, GZ and BZ2 options. */ if ((bp.PLZwe == Active) && (len > 20) && (!cmd) && (bp.tmode != CompGZ) && (bp.tmode != CompBZ2)) { zbuf = calloc(BINKP_ZIPBUFLEN, sizeof(char)); zlen = BINKP_PLZ_BLOCK -1; rcz = compress2(zbuf, &zlen, buf, len, 9); if (rcz == Z_OK) { Syslog('b', "Binkp: compressed OK, srclen=%d, destlen=%d, will send compressed=%s", len, zlen, (zlen < len) ?"yes":"no"); if (zlen < len) { bp.txcompressed += (len - zlen); /* * Calculate the perfect blocksize for the next block * using the current compression ratio. This gives * a dynamic optimal blocksize. The average maximum * blocksize on the line will be 4096 bytes. */ bp.cmpblksize = ((len * 4) / zlen) * 512; if (bp.cmpblksize < SND_BLKSIZE) bp.cmpblksize = SND_BLKSIZE; if (bp.cmpblksize > (BINKP_PLZ_BLOCK -1)) bp.cmpblksize = (BINKP_PLZ_BLOCK -1); /* * Rebuild header for compressed block */ header = ((BINKP_DATA_BLOCK + BINKP_PLZ_BLOCK + zlen) & 0xffff); rc = PUTCHAR((header >> 8) & 0x00ff); if (!rc) rc = PUTCHAR(header & 0x00ff); if (zlen && !rc) rc = PUT(zbuf, zlen); } else { rc = PUTCHAR((header >> 8) & 0x00ff); if (!rc) rc = PUTCHAR(header & 0x00ff); if (len && !rc) rc = PUT(buf, len); if (!cmd) bp.cmpblksize = SND_BLKSIZE; } } else { Syslog('+', "Binkp: compress error %d", rcz); rc = PUTCHAR((header >> 8) & 0x00ff); if (!rc) rc = PUTCHAR(header & 0x00ff); if (len && !rc) rc = PUT(buf, len); if (!cmd) bp.cmpblksize = SND_BLKSIZE; } free(zbuf); } else { rc = PUTCHAR((header >> 8) & 0x00ff); if (!rc) rc = PUTCHAR(header & 0x00ff); if (len && !rc) rc = PUT(buf, len); if (!cmd) bp.cmpblksize = SND_BLKSIZE; } #else rc = PUTCHAR((header >> 8) & 0x00ff); if (!rc) rc = PUTCHAR(header & 0x00ff); if (len && !rc) rc = PUT(buf, len); bp.cmpblksize = SND_BLKSIZE; #endif FLUSHOUT(); binkp_settimer(BINKP_TIMEOUT); Nopper(); return rc; } /* * Send a command message */ int binkp_send_command(int id, ...) { va_list args; char *fmt; static char buf[1024]; int sz, rc; va_start(args, id); fmt = va_arg(args, char*); if (fmt) { vsnprintf(buf, 1024, fmt, args); sz = (strlen(buf) & 0x7fff); } else { buf[0]='\0'; sz = 0; } memmove(buf+1, buf, sz); buf[0] = id & 0xff; sz++; rc = binkp_send_frame(TRUE, buf, sz); va_end(args); return rc; } /* * Set binkp master timer */ void binkp_settimer(int interval) { Timer = time((time_t*)NULL) + interval; } /* * Test if master timer is expired */ int binkp_expired(void) { time_t now; now = time(NULL); if (now >= Timer) Syslog('+', "Binkp: session timeout"); return (now >= Timer); } /* * Send system info to remote */ int binkp_banner(int originate) { time_t t; int rc; rc = binkp_send_command(MM_NUL,"SYS %s", CFG.bbs_name); if (!rc) rc = binkp_send_command(MM_NUL,"ZYZ %s", CFG.sysop_name); if (!rc) rc = binkp_send_command(MM_NUL,"LOC %s", CFG.location); if (!rc) rc = binkp_send_command(MM_NUL,"NDL %s", CFG.IP_Flags); t = time(NULL); if (!rc) rc = binkp_send_command(MM_NUL,"TIME %s", rfcdate(t)); if (!rc) { if (nodes.NoBinkp11 || bp.buggyIrex) rc = binkp_send_command(MM_NUL,"VER mbcico/%s/%s-%s %s/%s", VERSION, OsName(), OsCPU(), PRTCLNAME, PRTCLOLD); else rc = binkp_send_command(MM_NUL,"VER mbcico/%s/%s-%s %s/%s", VERSION, OsName(), OsCPU(), PRTCLNAME, PRTCLVER); } if (strlen(CFG.IP_Phone) && !rc) rc = binkp_send_command(MM_NUL,"PHN %s", CFG.IP_Phone); if (strlen(CFG.comment) && !rc) rc = binkp_send_command(MM_NUL,"OPM %s", CFG.comment); /* * Send compression options */ if (originate) { if (!rc) { rc = binkp_send_comp_opts(); } } return rc; } /* * Send compression options */ int binkp_send_comp_opts(void) { int rc = 0; #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) int plz = FALSE, gz = FALSE, bz2 = FALSE; char *p = NULL; #ifdef HAVE_ZLIB_H if ((bp.GZwe == Can) || (bp.GZthey == Can) || (bp.GZthey == Want)) { gz = TRUE; bp.GZwe = Want; } #endif #ifdef HAVE_BZLIB_H if ((bp.BZ2we == Can) || (bp.BZ2they == Can) || (bp.BZ2they == Want)) { bz2 = TRUE; bp.BZ2we = Want; } #endif #ifdef HAVE_ZLIB_H if ((bp.PLZwe == Can) || (bp.PLZthey == Can) || (bp.PLZthey == Want)) { plz = TRUE; bp.PLZwe = Want; } #endif if (plz || gz || bz2) { p = xstrcpy((char *)"OPT"); if (bz2 || gz) { bp.EXTCMDwe = Want; p = xstrcat(p, (char *)" EXTCMD"); } if (gz) p = xstrcat(p, (char *)" GZ"); if (bz2) p = xstrcat(p, (char *)" BZ2"); if (plz) p = xstrcat(p, (char *)" PLZ"); rc = binkp_send_command(MM_NUL,"%s", p); free(p); } #endif return rc; } void binkp_set_comp_state(void) { #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) Syslog('b', "Binkp: EXTCMD they=%s we=%s", opstate[bp.EXTCMDthey], opstate[bp.EXTCMDwe]); if ((bp.EXTCMDthey == Want) && (bp.EXTCMDwe == Want)) { Syslog('+', "Binkp: EXTCMD is active"); bp.EXTCMDthey = bp.EXTCMDwe = Active; } #endif #ifdef HAVE_BZLIB_H Syslog('b', "Binkp: BZ2 they=%s we=%s", opstate[bp.BZ2they], opstate[bp.BZ2we]); if ((bp.BZ2they == Want) && (bp.BZ2we == Want)) { if (bp.EXTCMDwe == Active) { Syslog('+', "Binkp: BZ2 compression active"); bp.BZ2we = bp.BZ2they = Active; } else { Syslog('!', "Binkp: received BZ2 option without EXTCMD option"); } } #endif #ifdef HAVE_ZLIB_H Syslog('b', "Binkp: GZ they=%s we=%s", opstate[bp.GZthey], opstate[bp.GZwe]); if ((bp.GZthey == Want) && (bp.GZwe == Want)) { if (bp.EXTCMDwe == Active) { bp.GZwe = bp.GZthey = Active; Syslog('+', "Binkp: GZ compression active"); } else { Syslog('!', "Binkp: received GZ option without EXTCMD option"); } } #endif #ifdef HAVE_ZLIB_H Syslog('b', "Binkp: PLZ they=%s we=%s", opstate[bp.PLZthey], opstate[bp.PLZwe]); if ((bp.PLZthey == Want) && (bp.PLZwe == Want)) { bp.PLZwe = bp.PLZthey = Active; Syslog('+', "Binkp: PLZ compression active"); } #endif } /* * Receive command frame */ int binkp_recv_command(char *buf, unsigned int *len, int *cmd) { int b0, b1; *len = *cmd = 0; b0 = GETCHAR(BINKP_TIMEOUT); if (tty_status) { Syslog('-', "Binkp: tty_status with b0"); goto to; } if (b0 & 0x80) *cmd = 1; b1 = GETCHAR(BINKP_TIMEOUT / 2); if (tty_status) { Syslog('-', "Binkp: tty_status with b1"); goto to; } *len = (b0 & 0x7f) << 8; *len += b1; GET(buf, *len, BINKP_TIMEOUT / 2); buf[*len] = '\0'; if (tty_status) { Syslog('-', "Binkp: tty_status with block len=%d", *len); goto to; } binkp_settimer(BINKP_TIMEOUT); Nopper(); to: if (tty_status) WriteError("Binkp: TCP rcv error, tty status: %s", ttystat[tty_status]); return tty_status; } /* * Parse a received M_NUL message */ void parse_m_nul(char *msg) { char *p, *q; if (strncmp(msg, "SYS ", 4) == 0) { Syslog('+', "System : %s", msg+4); strncpy(history.system_name, msg+4, 35); } else if (strncmp(msg, "ZYZ ", 4) == 0) { Syslog('+', "Sysop : %s", msg+4); strncpy(history.sysop, msg+4, 35); } else if (strncmp(msg, "LOC ", 4) == 0) { Syslog('+', "Location: %s", msg+4); strncpy(history.location, msg+4, 35); } else if (strncmp(msg, "NDL ", 4) == 0) { Syslog('+', "Flags : %s", msg+4); } else if (strncmp(msg, "TIME ", 5) == 0) { Syslog('+', "Time : %s", msg+5); } else if (strncmp(msg, "VER ", 4) == 0) { Syslog('+', "Uses : %s", msg+4); if ((p = strstr(msg+4, PRTCLNAME "/")) && (q = strstr(p, "."))) { bp.Major = atoi(p + 6); bp.Minor = atoi(q + 1); } /* * Irex 2.24 upto 2.29 claims binkp/1.1 while it is binkp/1.0 * Set a flag so we can activate a workaround. This only works * for incoming sessions. */ if ((p = strstr(msg+4, "Internet Rex 2."))) { q = strtok(p + 15, (char *)" \0"); if ((atoi(q) >= 24) && (atoi(q) <= 29)) { Syslog('b', " : Irex bug detected, workaround activated"); bp.buggyIrex = TRUE; } } } else if (strncmp(msg, "PHN ", 4) == 0) { Syslog('+', "Phone : %s", msg+4); } else if (strncmp(msg, "OPM ", 4) == 0) { Syslog('+', "Remark : %s", msg+4); } else if (strncmp(msg, "TRF ", 4) == 0) { Syslog('+', "Binkp: remote has %s mail/files for us", msg+4); } else if (strncmp(msg, "OPT ", 4) == 0) { Syslog('+', "Options : %s", msg+4); p = msg; q = strtok(p, " \n\r\0"); while ((q = strtok(NULL, " \r\n\0"))) { if (strncmp(q, (char *)"CRAM-MD5-", 9) == 0) { /* No SHA-1 support */ if (CFG.NoMD5) { Syslog('+', "Binkp: Remote supports MD5, but it's turned off here"); } else { if (bp.MD_Challenge) free(bp.MD_Challenge); bp.MD_Challenge = MD_getChallenge(q, NULL); } #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) } else if (strcmp(q, (char *)"EXTCMD") == 0) { Syslog('b', "Binkp: remote wants EXTCMD mode"); if (bp.EXTCMDthey == Can) { bp.EXTCMDthey = Want; binkp_set_comp_state(); } #endif #ifdef HAVE_BZLIB_H } else if (strcmp(q, (char *)"BZ2") == 0) { Syslog('b', "Binkp: remote wants BZ2 mode"); if (bp.BZ2they == Can) { bp.BZ2they = Want; binkp_set_comp_state(); } #endif #ifdef HAVE_ZLIB_H } else if (strcmp(q, (char *)"GZ") == 0) { Syslog('b', "Binkp: remote wants GZ mode"); if (bp.GZthey == Can) { bp.GZthey = Want; binkp_set_comp_state(); } #endif #ifdef HAVE_ZLIB_H } else if (strcmp(q, (char *)"PLZ") == 0) { Syslog('b', "Binkp: remote wants PLZ mode"); if (bp.PLZthey == Can) { bp.PLZthey = Want; binkp_set_comp_state(); } #endif } else if (strcmp(q, (char *)"NR") == 0) { Syslog('b', "Binkp: remote wants NR mode, NOT SUPPORTED HERE YET"); bp.NRthey = Want; } else if (strcmp(q, (char *)"NDA") == 0) { Syslog('b', "Binkp: remote wants NDA mode, NOT SUPPORTED HERE YET"); bp.NDAthey = Want; } else if (strcmp(q, (char *)"ND") == 0) { Syslog('b', "Binkp: remote wants ND mode, NOT SUPPORTED HERE YET"); bp.NDthey = Want; } } } else { Syslog('+', "Binkp: M_NUL \"%s\"", msg); } } /* * Poll for a frame, returns: * -1 = Error * 0 = Nothing yet * 1 = Got a frame * 2 = Frame not processed * 3 = Uncompress error */ int binkp_poll_frame(void) { int c, rc = 0, bcmd; #ifdef HAVE_ZLIB_H uLongf zlen; char *zbuf; #endif for (;;) { if (bp.GotFrame) { Syslog('b', "Binkp: WARNING: frame not processed"); rc = 2; break; } else { c = GETCHAR(0); if (c < 0) { c = -c; if (c == STAT_TIMEOUT) { msleep(1); rc = 0; break; } Syslog('?', "Binkp: receiver status %s", ttystat[c]); bp.rc = (MBERR_TTYIO + (-c)); rc = -1; break; } else { // Syslog('b', "c=%02x %c rxlen=%d", c, isprint(c) ? c : '.', bp.rxlen); switch (bp.rxlen) { case 0: bp.header = c << 8; rc = 0; // Syslog('b', "Binkp: 1st %02x", c); break; case 1: bp.header += c; rc = 0; // Syslog('b', "Binkp: 2nd %02x", c); break; default:bp.rxbuf[bp.rxlen-2] = c; } if (bp.rxlen == 1) { bp.cmd = bp.header & BINKP_CONTROL_BLOCK; #ifdef HAVE_ZLIB_H if ((bp.PLZthey == Active) && (bp.rmode == CompNone)) { bp.blklen = bp.header & 0x3fff; } else { bp.blklen = bp.header & 0x7fff; } #else bp.blklen = bp.header & 0x7fff; #endif } if ((bp.rxlen == (bp.blklen + 1) && (bp.rxlen >= 1))) { bp.GotFrame = TRUE; #ifdef HAVE_ZLIB_H /* * Got a PLZ compressed block */ if ((bp.PLZthey == Active) && (bp.header & BINKP_PLZ_BLOCK) && (bp.rmode == CompNone) && bp.blklen) { zbuf = calloc(BINKP_ZIPBUFLEN, sizeof(char)); zlen = BINKP_PLZ_BLOCK -1; rc = uncompress(zbuf, &zlen, bp.rxbuf, bp.rxlen -1); if (rc == Z_OK) { bp.rxcompressed += (zlen - (bp.rxlen -1)); memmove(bp.rxbuf, zbuf, zlen); bp.rxlen = zlen +1; bp.blklen = zlen; } else { free(zbuf); Syslog('!', "Binkp: uncompress error %d", rc); return 3; } free(zbuf); } #endif bp.rxbuf[bp.rxlen-1] = '\0'; if (bp.cmd) { bp.messages++; bcmd = bp.rxbuf[0]; Syslog('b', "Binkp: rcvd %s %s", bstate[bcmd], printable(bp.rxbuf+1, 0)); if (bcmd == MM_EOB) { bp.remote_EOB = TRUE; } } else { Syslog('b', "Binkp: rcvd data (%d)", bp.rxlen -1); gotblock++; if (crashme && (gotblock > 10)) { Syslog('b', "Binkp: will crash now"); die(SIGHUP); } } binkp_settimer(BINKP_TIMEOUT); Nopper(); rc = 1; break; } bp.rxlen++; } } } return rc; } /* * Add received command frame to the queue, will be processed by the transmitter. */ void binkp_add_message(char *frame) { the_queue **tmpl; int bcmd; bcmd = frame[0]; Syslog('b', "Binkp: add message %s %s", bstate[bcmd], printable(frame +1, 0)); for (tmpl = &tql; *tmpl; tmpl = &((*tmpl)->next)); *tmpl = (the_queue *)malloc(sizeof(the_queue)); (*tmpl)->next = NULL; (*tmpl)->cmd = frame[0]; (*tmpl)->data = xstrcpy(frame +1); bp.msgs_on_queue++; } /* * Process all messages on the queue, the oldest are on top, after * processing release memory and reset the messages queue. */ int binkp_process_messages(void) { the_queue *tmpq, *oldq; binkp_list *tmp; file_list *tsl; int Found, rmode; char *lname, *ropts; time_t ltime; int lsize, loffs; Syslog('b', "Binkp: Process The Messages Queue Start"); lname = calloc(512, sizeof(char)); ropts = calloc(512, sizeof(char)); for (tmpq = tql; tmpq; tmpq = tmpq->next) { Syslog('+', "Binkp: %s \"%s\"", bstate[tmpq->cmd], printable(tmpq->data, 0)); if (tmpq->cmd == MM_GET) { rmode = CompNone; snprintf(lname, 512, "%s", strtok(tmpq->data, " \n\r")); lsize = atoi(strtok(NULL, " \n\r")); ltime = atoi(strtok(NULL, " \n\r")); loffs = atoi(strtok(NULL, " \n\r")); snprintf(ropts, 512, "%s", printable(strtok(NULL, " \n\r\0"), 0)); Syslog('b', "Binkp: m_file options \"%s\"", ropts); if (strcmp((char *)"GZ", ropts) == 0) rmode = CompGZ; else if (strcmp((char *)"BZ2", ropts) == 0) rmode = CompBZ2; else if (strcmp((char *)"NZ", ropts) == 0) { rmode = CompNone; #ifdef HAVE_ZLIB_H bp.GZwe = bp.GZthey = No; #endif #ifdef HAVE_BZLIB_H bp.BZ2we = bp.BZ2they = No; #endif Syslog('+', "Binkp: received NZ on M_GET command, compression turned off"); } Found = FALSE; for (tmp = bll; tmp; tmp = tmp->next) { if ((strcmp(lname, tmp->remote) == 0) && (lsize == tmp->size) && (ltime == tmp->date)) { if (lsize == loffs) { /* * Requested offset is filesize, close file. */ if (cursend && (strcmp(lname, cursend->remote) == 0) && (lsize == cursend->size) && (ltime == cursend->date)) { Syslog('b', "Got M_GET with offset == filesize for current file, close"); /* * calculate time needed and bytes transferred */ gettimeofday(&txtvend, &bp.tz); /* * Close transmitter file */ fclose(bp.txfp); bp.txfp = NULL; if (bp.txpos >= 0) { bp.stxpos = bp.txpos - bp.stxpos; Syslog('+', "Binkp: OK %s", transfertime(txtvstart, txtvend, bp.stxpos, TRUE)); } else { Syslog('+', "Binkp: transmitter skipped file after %ld seconds", txtvend.tv_sec - txtvstart.tv_sec); } cursend->state = Got; // 12-03-2004 changed from IsSent, bug from LdG with FT. cursend = NULL; bp.TxState = TxGNF; for (tsl = tosend; tsl; tsl = tsl->next) { // Added 12-03 if (tsl->remote == NULL) { execute_disposition(tsl); } else { if (strcmp(cursend->local, tsl->local) == 0) { execute_disposition(tsl); } } } } else { Syslog('+', "Binkp: requested offset = filesize, but is not the current file"); if (tmp->state == IsSent) { // Added 12-03 Syslog('b', "Binkp: file is sent, treat as m_got"); tmp->state = Got; for (tsl = tosend; tsl; tsl = tsl->next) { if (tsl->remote == NULL) { execute_disposition(tsl); } else { if (strcmp(tmp->local, tsl->local) == 0) { execute_disposition(tsl); } } } } } } else if (loffs < lsize) { tmp->state = NoState; tmp->offset = loffs; if (loffs) { Syslog('+', "Binkp: Remote wants %s for resync at offset %ld", tmp->remote, tmp->offset); } else { Syslog('+', "Binkp: Remote wants %s again from start", tmp->remote); } bp.TxState = TxGNF; } else { Syslog('+', "Binkp: requested offset > filesize, ignore"); } Found = TRUE; break; } if (!Found) { Syslog('+', "Binkp: unexpected M_GET \"%s\"", tmpq->data); /* Ignore frame */ } } } else if (tmpq->cmd == MM_GOT) { snprintf(lname, 512, "%s", strtok(tmpq->data, " \n\r")); lsize = atoi(strtok(NULL, " \n\r")); ltime = atoi(strtok(NULL, " \n\r")); Found = FALSE; for (tmp = bll; tmp; tmp = tmp->next) { if ((strcmp(lname, tmp->remote) == 0) && (lsize == tmp->size) && (ltime == tmp->date)) { Found = TRUE; if (tmp->state == Sending) { Syslog('+', "Binkp: remote refused %s", tmp->remote); fclose(bp.txfp); bp.txfp = NULL; bp.TxState = TxGNF; cursend = NULL; } else { Syslog('+', "Binkp: remote GOT \"%s\"", tmp->remote); } tmp->state = Got; for (tsl = tosend; tsl; tsl = tsl->next) { if (tsl->remote == NULL) { execute_disposition(tsl); } else { if (strcmp(tmp->local, tsl->local) == 0) { execute_disposition(tsl); } } } break; } } if (!Found) { Syslog('+', "Binkp: unexpected M_GOT \"%s\"", tmpq->data); /* Ignore frame */ } } else if (tmpq->cmd == MM_SKIP) { snprintf(lname, 512, "%s", strtok(tmpq->data, " \n\r")); lsize = atoi(strtok(NULL, " \n\r")); ltime = atoi(strtok(NULL, " \n\r")); Found = FALSE; for (tmp = bll; tmp; tmp = tmp->next) { if ((strcmp(lname, tmp->remote) == 0) && (lsize == tmp->size) && (ltime == tmp->date)) { Found = TRUE; if (tmp->state == Sending) { Syslog('+', "Binkp: remote skipped %s, may be accepted later", tmp->remote); fclose(bp.txfp); bp.txfp = NULL; cursend = NULL; bp.TxState = TxGNF; } else { Syslog('+', "Binkp: remote refused %s", tmp->remote); } tmp->state = Skipped; break; } } if (!Found) { Syslog('+', "Binkp: unexpected M_SKIP \"%s\"", tmpq->data); /* Ignore frame */ } } else { /* Illegal message on the queue */ } } /* * Tidy the messages queue and reset. */ for (tmpq = tql; tmpq; tmpq = oldq) { oldq = tmpq->next; if (tmpq->data) free(tmpq->data); free(tmpq); } tql = NULL; free(lname); bp.msgs_on_queue = 0; return 0; } /* * Count number of pending files */ int binkp_pendingfiles(void) { binkp_list *tmpl; int count = 0; for (tmpl = bll; tmpl; tmpl = tmpl->next) { if ((tmpl->state != Got) && (tmpl->state != Skipped)) count++; } if (count) Syslog('b', "Binkp: %d pending files on queue", count); return count; } /* * Translate string to binkp escaped string, unsafe characters are escaped. */ char *unix2binkp(char *fn) { static char buf[PATH_MAX]; char *p, *q; memset(&buf, 0, sizeof(buf)); p = fn; q = buf; while (*p) { if (strspn(p, (char *)BNKCHARS)) { *q++ = *p; *q = '\0'; } else { if (nodes.WrongEscape) { snprintf(q, 4, "\\%2x", p[0]); } else { snprintf(q, 5, "\\x%2x", p[0]); } } while (*q) q++; p++; } *q = '\0'; return buf; } /* * Translate escaped binkp string to normal string. */ char *binkp2unix(char *fn) { static char buf[PATH_MAX]; char *p, *q, hex[3]; int c; memset(&buf, 0, sizeof(buf)); p = fn; q = buf; while (*p) { if (p[0] == '\\') { p++; if (*p == '\\') { /* * A backslash is transmitted */ *q++ = '\\'; *q = '\0'; } else { /* * If remote sends \x0a method instead of \0a, eat the x character. * Remotes should send the x character, But some (Argus and Irex) don't. */ if ((*p == 'x') || (*p == 'X')) p++; /* * Decode hex characters */ hex[0] = *p++; hex[1] = *p; hex[2] = '\0'; sscanf(hex, "%2x", &c); *q++ = c; *q = '\0'; } } else { *q++ = *p; *q = '\0'; } p++; } *q = '\0'; return buf; } /* * Fill internal binkp filelist */ void fill_binkp_list(binkp_list **bkll, file_list *fal, off_t offs) { binkp_list **tmpl; FILE *fp; struct stat tstat; int comp; char *unp; for (tmpl = bkll; *tmpl; tmpl = &((*tmpl)->next)); *tmpl = (binkp_list *)malloc(sizeof(binkp_list)); (*tmpl)->next = NULL; (*tmpl)->state = NoState; if ((fp = fopen(fal->local, "r")) == NULL) { if ((errno == ENOENT) || (errno == EINVAL)) { Syslog('+', "Binkp: file %s doesn't exist, removing", MBSE_SS(fal->local)); (*tmpl)->state = Got; execute_disposition(fal); } } else { fclose(fp); stat(fal->local, &tstat); if (strstr(fal->remote, (char *)".pkt")) bp.nethold += tstat.st_size; else bp.mailhold += tstat.st_size; } (*tmpl)->get = FALSE; (*tmpl)->local = xstrcpy(fal->local); (*tmpl)->remote = xstrcpy(unix2binkp(fal->remote)); (*tmpl)->offset = offs; (*tmpl)->size = tstat.st_size; (*tmpl)->date = tstat.st_mtime; (*tmpl)->compress = CompNone; /* * Search compression method, but only if GZ or BZ2 compression is active. */ comp = FALSE; #ifdef HAVE_ZLIB_H if ((bp.GZwe == Active) && (bp.GZthey == Active)) comp = TRUE; #endif #ifdef HAVE_BZLIB_H if ((bp.BZ2we == Active) && (bp.BZ2they == Active)) comp = TRUE; #endif if (!comp) return; /* * Don't compress small files */ if (tstat.st_size <= 1024) return; /* * Check file type */ unp = unpacker(fal->local); if (unp && strcmp((char *)"TAR", unp)) { Syslog('b', "Binkp: %s send as-is", fal->local); return; } #ifdef HAVE_BZLIB_H /* * Use BZ2 for files > 200K */ if ((bp.BZ2we == Active) && (bp.BZ2they == Active) && (tstat.st_size > 202400)) { (*tmpl)->compress = CompBZ2; Syslog('b', "Binkp: %s compressor BZ2", fal->local); return; } #endif #ifdef HAVE_ZLIB_H if ((bp.GZwe == Active) && (bp.GZthey == Active)) { (*tmpl)->compress = CompGZ; Syslog('b', "Binkp: %s compressor GZ", fal->local); return; } #endif Syslog('+', "Binkp: compressor select internal error"); } /* * Clear current filelist */ void binkp_clear_filelist(int rc) { binkp_list *tmp; file_list *fal; if (tosend != NULL) { Syslog('b', "Binkp: binkp_clear_filelist(%d)", rc); for (tmp = bll; bll; bll = tmp) { tmp = bll->next; if (bll->local) free(bll->local); if (bll->remote) free(bll->remote); free(bll); } /* WARNING: Added 16-07-2004 to see if this is safe to clean /flo files. * * Remove sent fake files like .spl and .flo */ for (fal = tosend; fal; fal = fal->next) { if ((fal->remote == NULL) && (rc == 0)) execute_disposition(fal); } tidy_filelist(tosend, TRUE); tosend = NULL; respond = NULL; } } /***************************************************************************** * * Compression support for GZ and BZ2 modes. Routines from the original * binkd package, slightly adopted for mbcico. * * Original written by val khokhlov, FIDONet 2:550/180 * */ int compress_init(int type) { #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) int lvl; #endif switch (type) { #ifdef HAVE_BZLIB_H case CompBZ2: { z_odata = calloc(1, sizeof(bz_stream)); if (z_odata == NULL) { Syslog('+', "Binkp: compress_init: not enough memory (%lu needed)", sizeof(bz_stream)); return BZ_MEM_ERROR; } lvl = 1; /* default is small (100K) buffer */ return BZ2_bzCompressInit((bz_stream *)z_odata, lvl, 0, 0); } #endif #ifdef HAVE_ZLIB_H case CompGZ: { z_odata = calloc(1, sizeof(z_stream)); if (z_odata == NULL) { Syslog('+', "Binkp: compress_init: not enough memory (%lu needed)", sizeof(z_stream)); return Z_MEM_ERROR; } lvl = 9; /* Maximum compression */ if (lvl <= 0) lvl = Z_DEFAULT_COMPRESSION; return deflateInit((z_stream *)z_odata, lvl); } #endif default: Syslog('+', "Binkp: unknown compression method: %d; data lost", type); } return -1; } int do_compress(int type, char *dst, int *dst_len, char *src, int *src_len, int finish, void *data) { #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) int rc; #endif switch (type) { #ifdef HAVE_BZLIB_H case CompBZ2: { bz_stream *zstrm = (bz_stream *)data; zstrm->next_in = (char *)src; zstrm->avail_in = (unsigned int)*src_len; zstrm->next_out = (char *)dst; zstrm->avail_out = (unsigned int)*dst_len; rc = BZ2_bzCompress(zstrm, finish ? BZ_FINISH : 0); *src_len -= (int)zstrm->avail_in; *dst_len -= (int)zstrm->avail_out; if (rc == BZ_RUN_OK || rc == BZ_FLUSH_OK || rc == BZ_FINISH_OK) rc = 0; if (rc == BZ_STREAM_END) rc = 1; return rc; } #endif #ifdef HAVE_ZLIB_H case CompGZ: { z_stream *zstrm = (z_stream *)data; zstrm->next_in = (Bytef *)src; zstrm->avail_in = (uLong)*src_len; zstrm->next_out = (Bytef *)dst; zstrm->avail_out = (uLong)*dst_len; rc = deflate(zstrm, finish ? Z_FINISH : 0); *src_len -= (int)zstrm->avail_in; *dst_len -= (int)zstrm->avail_out; if (rc == Z_STREAM_END) rc = 1; return rc; } #endif default: Syslog('+', "Binkp: unknown compression method: %d; data lost", type); } return -1; } void compress_deinit(int type, void *data) { switch (type) { #ifdef HAVE_BZLIB_H case CompBZ2: { int rc = BZ2_bzCompressEnd((bz_stream *)data); if (rc < 0) Syslog('+', "Binkp: BZ2_bzCompressEnd error: %d", rc); break; } #endif #ifdef HAVE_ZLIB_H case CompGZ: { int rc = deflateEnd((z_stream *)data); if (rc < 0) Syslog('+', "Binkp: deflateEnd error: %d", rc); break; } #endif default: Syslog('+', "Binkp: unknown compression method: %d", type); } free(data); return; } void compress_abort(int type, void *data) { char buf[1024]; int i, j; if (data) { Syslog('b', "Binkp: purge compress buffers"); do { i = sizeof(buf); j = 0; } while (do_compress(type, buf, &i, NULL, &j, 1, data) == 0 && i > 0); compress_deinit(type, data); } } int decompress_init(int type) { switch (type) { #ifdef HAVE_BZLIB_H case CompBZ2: { z_idata = calloc(1, sizeof(bz_stream)); if (z_idata == NULL) { Syslog('+', "Binkp: decompress_init: not enough memory (%lu needed)", sizeof(bz_stream)); return BZ_MEM_ERROR; } return BZ2_bzDecompressInit((bz_stream *)z_idata, 0, 0); } #endif #ifdef HAVE_ZLIB_H case CompGZ: { z_idata = calloc(1, sizeof(z_stream)); if (z_idata == NULL) { Syslog('+', "Binkp: decompress_init: not enough memory (%lu needed)", sizeof(z_stream)); return Z_MEM_ERROR; } return inflateInit((z_stream *)z_idata); } #endif default: Syslog('+', "Binkp: unknown compression method: %d; data lost", type); } return -1; } int do_decompress(int type, char *dst, int *dst_len, char *src, int *src_len, void *data) { #if defined(HAVE_ZLIB_H) || defined(HAVE_BZLIB_H) int rc; #endif switch (type) { #ifdef HAVE_BZLIB_H case CompBZ2: { bz_stream *zstrm = (bz_stream *)data; zstrm->next_in = (char *)src; zstrm->avail_in = (unsigned int)*src_len; zstrm->next_out = (char *)dst; zstrm->avail_out = (unsigned int)*dst_len; rc = BZ2_bzDecompress(zstrm); *src_len -= (int)zstrm->avail_in; *dst_len -= (int)zstrm->avail_out; if (rc == BZ_RUN_OK || rc == BZ_FLUSH_OK) rc = 0; if (rc == BZ_STREAM_END) rc = 1; return rc; } #endif #ifdef HAVE_ZLIB_H case CompGZ: { z_stream *zstrm = (z_stream *)data; zstrm->next_in = (Bytef *)src; zstrm->avail_in = (uLong)*src_len; zstrm->next_out = (Bytef *)dst; zstrm->avail_out = (uLong)*dst_len; rc = inflate(zstrm, 0); *src_len -= (int)zstrm->avail_in; *dst_len -= (int)zstrm->avail_out; if (rc == Z_STREAM_END) rc = 1; return rc; } #endif default: Syslog('+', "Binkp: unknown compression method: %d; data lost", type); } return 0; } int decompress_deinit(int type, void *data) { int rc = -1; switch (type) { #ifdef HAVE_BZLIB_H case CompBZ2: { rc = BZ2_bzDecompressEnd((bz_stream *)data); break; } #endif #ifdef HAVE_ZLIB_H case CompGZ: { rc = inflateEnd((z_stream *)data); break; } #endif default: Syslog('+', "Binkp: unknown compression method: %d", type); break; } free(data); return rc; } int decompress_abort(int type, void *data) { char buf[1024]; int i, j; if (data) { Syslog('b', "Binkp: purge decompress buffers"); do { i = sizeof(buf); j = 0; } while (do_decompress(type, buf, &i, NULL, &j, data) == 0 && i > 0); return decompress_deinit(type, data); } return 0; } /* * Abort, called from die in case there were errors. * This will reconstruct file data that is still in * compressed state in memory so that resync works. */ void binkp_abort(void) { Syslog('b', "Binkp: abort"); if ((bp.rmode != CompNone) && z_idata) decompress_abort(bp.rmode, z_idata); if ((bp.tmode != CompNone) && z_odata) compress_abort(bp.tmode, z_odata); }