/
s_misc.c
1386 lines (1021 loc) · 29.7 KB
/
s_misc.c
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/*
* Maximus Version 3.02
* Copyright 1989, 2002 by Lanius Corporation. All rights reserved.
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: s_misc.c,v 1.6 2004/01/22 08:04:28 wmcbrine Exp $ */
#define NOVARS
#ifdef SWAP
#include "../swap/swap.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <dos.h>
#include <io.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <share.h>
#include <time.h>
#include <ctype.h>
#include <process.h>
#include "alc.h"
#include "dr.h"
#include "prog.h"
#include "crc.h"
#include "max.h"
#include "msgapi.h"
#include "squish.h"
#include "s_dupe.h"
#if defined(__TURBOC__) || defined(__MSC__)
void cdecl _junk_cdecl_proc(void)
{
/* to get around incompatibility in MS-LINK */
}
#endif
void Alloc_Buffer(unsigned size)
{
if (buffer)
Free_Buffer();
if ((buffer=malloc(size + 20u /* for safety */))==NULL)
NoMem();
orig_buffer=buffer;
}
void Free_Buffer(void)
{
if (buffer)
free(buffer);
buffer=orig_buffer=NULL;
}
/* Buffered input from packet */
static unsigned chs=0;
static long read_ofs;
/* External program saying that we've modified the packet position */
void SetPktOfs(long ofs)
{
read_ofs=ofs;
}
/* Return the current offset (taking buffering into account) of the current *
* packet file. */
long GetPktOfs(void)
{
return (read_ofs-(long)chs);
}
static void near Skip_To_Nul(int pktfile, char *buf, unsigned buflen)
{
char *s;
unsigned got;
for (s=NULL; (got=(unsigned)fastread(pktfile, buf, buflen)) != 0; )
if ((s=memchr(buf, '\0', got)) != NULL)
break;
if (s)
(void)lseek(pktfile,-((long)got-(long)(s-buf))+1L,SEEK_CUR);
}
char *Get_To_Nul(void *msg, unsigned int *length, int pktfile, int gp)
{
byte *b=buffer+sizeof(XMSG);
byte *p, *s=NULL;
unsigned got;
if (pktfile==-1)
{
orig_buffer=buffer;
chs=0;
return NULL;
}
if (gp)
{
/* If there's not enough left... */
if (chs < sizeof(struct _pktprefix))
{
/* Move what's left to start of buffer... */
(void)memmove(b, orig_buffer, chs);
/* And refill it! */
got=(unsigned)fastread(pktfile, b+chs, maxmsglen-chs);
if (got != 0 && got != (unsigned)-1)
{
/* Increment the file pointer */
chs += got;
read_ofs += (long)got;
}
orig_buffer=b;
}
got=min(sizeof(struct _pktprefix), chs);
/* Copy the structure where we need it */
(void)memmove(msg, orig_buffer, got);
/* And adjust our pointers... */
orig_buffer += got;
chs -= got;
/* Return number of chars */
*length=got;
return NULL;
}
/* Copy the message into the right spot, if required. We're copying *
* the message into this array so we can get everything with just *
* ONE write() call. That also means we have to push everything up *
* to the front of the buffer. */
if (msg)
{
(void)memmove(buffer, msg, sizeof(XMSG));
(void)memmove(b, orig_buffer, chs);
orig_buffer=b;
}
if (!chs)
{
orig_buffer=b;
got=(unsigned)fastread(pktfile, b, maxmsglen);
if (got > 0)
{
chs += got;
read_ofs += (long)got;
}
}
for (;;)
{
if ((p=memchr(orig_buffer, '\0', chs)) != NULL)
{
/* Got it! Adjust pointers and return */
s=orig_buffer;
chs -= (unsigned)((++p)-orig_buffer);
orig_buffer=p;
break;
}
else if (chs < maxmsglen)
{
(void)memmove(b, orig_buffer, chs);
got=(unsigned)fastread(pktfile, (orig_buffer=b)+chs, maxmsglen-chs);
if (got != 0 && got != (unsigned)-1)
{
chs += got;
read_ofs += got;
}
else
{
/* eof - return everything we got anyway, and treat it as a NUL */
s=orig_buffer;
p=orig_buffer+chs;
*p++='\0'; /* make sure it's capped with a NUL */
chs=0;
break;
}
}
else
{
chs=0;
orig_buffer=b;
Skip_To_Nul(pktfile, buffer, maxmsglen);
return NULL;
}
}
if (length)
*length=(unsigned)(p - b) + (unsigned)(msg ? sizeof(XMSG) : 0);
if (msg)
return buffer;
else return s;
}
dword crcstr(dword crc,byte *s)
{
byte *e;
/* Only count non-control characters and non-spaces. */
for (e=s+strlen(s);s < e;s++)
if (*s > ' ' && *s < 127)
crc=xcrc32(*s,crc);
return crc;
}
void DiskFull(struct _cfgarea *ar)
{
S_LogMsg("!Error writing msg to %s; no disk space!", ar->name);
bad_packet=TRUE;
/* Flush duplicate buffer */
if (ar)
DupeFlushBuffer();
}
/* Display an error message when we run out of memory */
void _fast NoMem(void)
{
S_LogMsg("!Ran out of memory. Aborting abnormally. (mem=%ld)",
coreleft());
(void)printf("\nRan out of memory!\n");
S_LogClose();
exit(ERL_ERROR);
}
/* Display an error message when we cannot open a file */
void ErrOpening(char *name,char *filename)
{
(void)printf("Fatal error opening %s file `%s'!\n", name, fancy_fn(filename));
exit(ERL_ERROR);
}
/* Find the next occurance of a token, as the FIRST item on a line */
char *GetNextToken(byte *start, byte *buf, byte *token)
{
byte *p, *s;
if (buf==NULL)
return NULL;
p=buf;
while (p && (p=strstr(p, token)) != NULL)
{
s=p; /* Save current pointer */
/* If the prior character is a CR, this may be it. Scan back just *
* to make sure that we can find a hard CR (0x0d). */
if (p[-1]=='\x0d' || p[-1]=='\x0a' || (byte)p[-1]==(byte)0x8d)
while (p-- > start) /* Scan back to find the first non-soft-CR */
if (p > start && *p != '\x0a' && (byte)*p != (byte)0x8d)
break;
if (*p=='\x0d') /* If the first thing before the soft CR's was a */
return s; /* a hard CR, then we've found it. */
else p=strchr(s+1, '\x0d');
}
return NULL;
}
/* Return a pointer to the tear/origin line in message buffer, or NULL *
* if not found. */
byte *GetTearPos(byte *msgbuf, byte **endtear)
{
byte *found, *estart;
byte *sv;
byte *s;
found=msgbuf;
while ((found=GetNextToken(msgbuf, found, "---")) != NULL)
{
s=found;
s=strchr(s, '\x0d'); /* Skip to next '\x0d' */
if (!s) /*It shoulda been there, but still... */
s=found+strlen(found);
/* Skip over end of line */
while (*s=='\x0d' || *s=='\x0a' || *s==(byte)0x8d)
s++;
/* If we have an origin line */
if (s[0]==' ' && s[2]==' ' && s[3]=='O' && s[4]=='r' && s[5]=='i' &&
s[6]=='g' && s[7]=='i' && s[8]=='n' && s[9]==':')
{
extern char *seen_by_str;
/* Find end of tearline */
sv=s;
s=strchr(s, '\x0d');
if (!s)
s=sv+strlen(sv);
/* Skip over junk */
while (/**s=='\x0d' ||*/ *s=='\x0a' || *s==(byte)0x8d)
s++;
/* Skip over one \x0d at most */
if (*s=='\x0d')
s++;
estart=s;
/* Now find end of the message, after tearline */
while (*s && (eqstrn(s, seen_by_str, 8) || *s <= ' '))
{
while (*s && *s != '\x0d')
s++;
if (*s=='\x0d')
s++;
while (*s && (*s=='\x0a' || *s==(byte)0x8d))
s++;
}
/* If there was junk after the tear line, it must not've been it. */
if (*s != '\0')
return NULL;
if (endtear)
*endtear=/* s */ estart;
return found;
}
found++; /* So that GetNextToken() doesn't return the current token */
}
if (endtear)
*endtear=NULL;
/* If we got this far, then it wasn't found */
return NULL;
}
int DestIsHere(struct _pktprefix *prefix)
{
NETADDR paddr;
paddr.zone=0;
paddr.net=(word)prefix->dest_net;
paddr.node=(word)prefix->dest_node;
paddr.point=POINT_ALL;
return (DestIsHereA(&paddr));
}
int DestIsHereA(NETADDR *dest)
{
struct _sblist *addr;
for (addr=config.addr; addr; addr=addr->next)
if (AddrMatchNS(dest, addr))
return TRUE;
return FALSE;
}
char *FixOutboundName(word zone)
{
struct _outb *pob;
static char outname[PATHLEN];
word len;
/* Make sure that zone number is within bounds */
if (zone > 0xfff && zone != 0xffff)
zone=config.addr->zone;
/* Set a default outbound directory */
(void)strcpy(outname, config.outb->dir);
for (pob=config.outb; pob; pob=pob->next)
{
if (pob->zone==zone || pob->zone==0)
{
(void)strcpy(outname, pob->dir);
/* Strip trailing backslashes off dir name */
if ((len=(word)strlen(outname)) != 3)
while (outname[len]=='\\' || outname[len]=='/')
outname[len--]='\0';
/* If it's not our default zone, or if we're in FD mode, use OUT.SQ */
if (pob->zone != config.addr->zone || (config.flag & FLAG_FRODO))
{
if (zone==0xffff || (config.flag & FLAG_FRODO))
(void)strcat(outname, ".sq");
else if (zone != config.addr->zone)
(void)sprintf(outname+strlen(outname), ".%03hx", zone);
}
break;
}
}
(void)Add_Trailing(outname, PATH_DELIM);
if (!direxist(outname))
(void)make_dir(outname);
return outname;
}
void Fill_Out_Pkthdr(struct _pkthdr *ph,
struct _sblist *us,
word them_zone, word them_net, word them_node, word them_point)
{
struct _nodepwd *np;
struct _sblist sb;
time_t gmt;
struct tm *lt;
/* Get current time */
gmt=time(NULL);
lt=localtime(&gmt);
/* Zero out entire packet header */
(void)memset(ph, '\0', sizeof(struct _pkthdr));
ph->orig_node=(sword)us->node; /* Fill in addresses */
ph->dest_node=(sword)them_node;
ph->year=(word)lt->tm_year+1900;
ph->month=(word)lt->tm_mon;
ph->day=(word)lt->tm_mday;
ph->hour=(word)lt->tm_hour;
ph->minute=(word)lt->tm_min;
ph->second=(word)lt->tm_sec;
ph->baud=0;
ph->ver=PKTVER;
ph->orig_net=(sword)us->net;
ph->dest_net=(sword)them_net;
ph->product=pMax;
ph->rev_maj=SQUISH_REV_MAJ;
ph->rev_min=SQUISH_REV_MIN;
ph->password[0]='\0';
ph->qm_orig_zone=ph->orig_zone=us->zone;
ph->qm_dest_zone=ph->dest_zone=them_zone;
ph->aux_net=us->net;
ph->cw=cREV2P;
/* Swap the byte order of the capability words */
ph->cw_validation=(word)((word)ph->cw >> 8) | (word)((word)ph->cw << 8);
/* Fill in other 4D info */
ph->orig_point=us->point;
ph->dest_point=them_point;
ph->product_hi=0;
/*if (us->point)*/ /* Kludge using the pkt.aux_net field */
/* ph->orig_net=-1;*/ /* for compatibility with other<tm> progs */
ph->prod_data=0x544b5058L; /* "XPKT" */
/* Now check to see if we need to add a password for this node, *
* and if found, add it accordingly. */
sb.zone=them_zone;
sb.net=them_net;
sb.node=them_node;
sb.point=them_point;
for (np=config.pwd; np; np=np->next)
{
if (AddrMatchS(&sb, &np->addr))
{
(void)strncpy(ph->password, np->pwd, 8);
break;
}
}
}
/* Compare two configuration areas by name */
static int _stdc CfgareaComp(void *a1, void *a2)
{
return (stricmp(((struct _cfgarea *)a1)->name,
((struct _cfgarea *)a2)->name));
}
void Initialize_Variables(void)
{
(void)memset(&config, '\0', sizeof(struct _config));
config.areasbbs=sstrdup("");
config.routing=sstrdup("");
config.logfile=sstrdup("");
config.tracklog=sstrdup("");
config.swappath=sstrdup("");
config.origin=sstrdup("None");
config.compress_cfg=sstrdup("compress.cfg");
config.statfile=sstrdup("squish.stt");
config.max_talist=OS_MAX_TALIST;
config.max_handles=OS_MAX_HANDLES;
config.dupe_msgs=1000;
config.maxpkt=config.maxattach=128;
config.loglevel=6;
config.flag2 |= FLAG2_DMSGID | FLAG2_DHEADER;
/* Create a skip list to hold the area configuration */
if ((config.area=SkipCreateList(16, 8, CfgareaComp))==NULL)
NoMem();
}
void Cleanup(void)
{
struct _cfgarea *ar;
struct _sblist *sb, *nextsb;
struct _arcinfo *ap, *nextap;
struct _remap *rem, *nextrem;
struct _nodepwd *pwd, *nextpwd;
struct _fwdlist *fwd, *nextfwd;
struct _statlist *sl, *nextsl;
struct _groute *gr, *nextgr;
struct _tosspath *tp, *nexttp;
struct _outb *pob, *nextpob;
#ifdef OS_2 /* Free the list of DLL features */
struct _feature *feat, *nextfeat;
for (feat=config.feat; feat; nextfeat=feat->pfNext, free(feat), feat=nextfeat)
{
struct _feat_term ft;
/* Prepare the termination structure */
ft.struct_len=sizeof(ft);
/* Tell the DLL to finish up */
(void)(*feat->pfnTerm)(&ft);
/* Free memory used by llist */
if (feat->pszDLLName)
free(feat->pszDLLName);
if (feat->pszConfigName)
free(feat->pszConfigName);
/* Free the dynamic link library itself */
(void)DosFreeModule(feat->hmod);
}
#endif
for (ar=SkipFirst(config.area); ar; ar=SkipNext(config.area))
{
/* Free all of the nodes we're scanning to */
for (sb=ar->scan; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sb=ar->update_ok; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sl=ar->statlist; sl; nextsl=sl->next, free(sl), sl=nextsl)
;
free(ar->path);
free(ar->name);
free(ar);
}
(void)SkipDestroyList(config.area);
for (ap=config.arc; ap; nextap=ap->next, (free)(ap), ap=nextap)
{
if (ap->arcname)
(free)(ap->arcname);
if (ap->extension)
(free)(ap->extension);
if (ap->add)
(free)(ap->add);
if (ap->extract)
(free)(ap->extract);
if (ap->view)
(free)(ap->view);
if (ap->id)
(free)(ap->id);
/* Free all of the nodes to use for this archiver */
for (sb=ap->nodes; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
}
for (rem=config.remap; rem; nextrem=rem->next, free(rem), rem=nextrem)
free(rem->name);
for (gr=config.gate; gr; nextgr=gr->next, free(gr), gr=nextgr)
{
for (sb=gr->nodes; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sb=gr->except; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
}
for (gr=config.zgat; gr; nextgr=gr->next, free(gr), gr=nextgr)
for (sb=gr->nodes; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (pwd=config.pwd; pwd; nextpwd=pwd->next, free(pwd), pwd=nextpwd)
;
for (fwd=config.fwdto; fwd; nextfwd=fwd->next, free(fwd), fwd=nextfwd)
;
for (fwd=config.fwdfrom; fwd; nextfwd=fwd->next, free(fwd), fwd=nextfwd)
;
for (sb=config.ats; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sb=config.tiny; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sb=config.tiny_except; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sb=config.addr; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sb=config.stripattr; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (sb=config.stripattr_except; sb; nextsb=sb->next, free(sb), sb=nextsb)
;
for (tp=config.tpath; tp; nexttp=tp->next, free(tp), tp=nexttp)
if (tp->path)
free(tp->path);
for (pob=config.outb; pob; nextpob=pob->next, free(pob), pob=nextpob)
if (pob->dir)
free(pob->dir);
free(config.areasbbs);
free(config.routing);
free(config.logfile);
free(config.tracklog);
free(config.origin);
free(config.compress_cfg);
free(config.swappath);
free(config.statfile);
}
int MatchNN(NETADDR *m1, NETADDR *m2, int ign_zone)
{
if ((m1->zone==m2->zone || m2->zone==0 || m1->zone==0 ||
m1->zone==ZONE_ALL || m2->zone==ZONE_ALL || ign_zone) &&
(m2->net==m1->net || m1->net==NET_ALL || m2->net==NET_ALL) &&
(m2->node==m1->node || m1->node==NODE_ALL || m2->node==NODE_ALL) &&
(m2->point==m1->point || m1->point==POINT_ALL ||
m2->point==POINT_ALL || ign_zone))
return TRUE;
else return FALSE;
}
int MatchNS(NETADDR *m1, struct _sblist *m2, int ign_zone)
{
if ((m1->zone==m2->zone || m2->zone==0 || m1->zone==0 ||
m1->zone==ZONE_ALL || m2->zone==ZONE_ALL || ign_zone) &&
(m2->net==m1->net || m1->net==NET_ALL || m2->net==NET_ALL) &&
(m2->node==m1->node || m1->node==NODE_ALL || m2->node==NODE_ALL) &&
(m2->point==m1->point || m1->point==POINT_ALL ||
m2->point==POINT_ALL/* || ign_zone*/))
return TRUE;
else return FALSE;
}
int MatchSS(struct _sblist *m1, struct _sblist *m2, int ign_zone)
{
if ((m1->zone==m2->zone || m2->zone==0 || m1->zone==0 || m1->zone==ZONE_ALL ||
m2->zone==ZONE_ALL || (config.flag & FLAG_CHECKZ)==0 || ign_zone) &&
(m2->net==m1->net || m1->net==NET_ALL || m2->net==NET_ALL) &&
(m2->node==m1->node || m1->node==NODE_ALL || m2->node==NODE_ALL) &&
(m2->point==m1->point || m1->point==POINT_ALL || m2->point==POINT_ALL/* || ign_zone*/))
return TRUE;
else return FALSE;
}
static int near Scanned_Area(char *aname,void (*ScanCmd)(struct _cfgarea *ar,HAREA opensq))
{
struct _cfgarea arname;
struct _cfgarea *ar;
arname.name=aname;
if ((ar=SkipSearchList(config.area, &arname)) != NULL)
(*ScanCmd)(ar, NULL);
return (ar != NULL);
}
void Do_Echotoss(char *etname, void (*ScanCmd)(struct _cfgarea *ar,HAREA opensq),
int bad_scan_all, char *scan_after)
{
FILE *etfile;
struct _cfgarea *ar;
char temp[PATHLEN];
extern word mode;
int after; /* Have we reached the pointer after area 'scan_after' yet? */
NW(bad_scan_all);
/* If no scan_after area provided, scan all areas */
after=!(scan_after && *scan_after);
if (etname==NULL)
{
/* If we're currently doing a scan, scan the area ONLY if it wasn't *
* tossed to earlier in the session. This means that we can do *
* a SQUISH IN OUT -fechtoss.log, and scan the areas in echotoss.log *
* which we didn't toss to. *
* *
* If the scanning command is not scan (ie. link), we want it to *
* only process areas that we DID toss into. */
for (ar=SkipFirst(config.area); ar; ar=SkipNext(config.area))
{
/* Only scan areas which come after the named message area */
if (scan_after && eqstri(ar->name, scan_after))
after=TRUE;
if (after &&
((mode & MODE_toss)==0 || (ar->flag & AFLAG_TOSSEDTO)))
{
(*ScanCmd)(ar, NULL);
}
}
}
else
{
/* If the echotoss doesn't exist, process it only if we're NOT *
* doing the link phase. If no echotoss exists for the link, *
* we want to simply ignore the request, rather than relinking *
* all areas. */
if ((etfile=shfopen(etname, "r", O_RDONLY | O_NOINHERIT))==NULL)
{
/* If it didn't exist, interpret etname as a tag name */
if (! Scanned_Area(etname, ScanCmd))
{
/* If THAT failed, it musta been a bad name */
(void)printf("Can't find `%s'; no areas scanned.\n", etname);
S_LogMsg("#Can't read echotoss log `%s'; scan aborted", etname);
}
}
else /* if etfile was opened okay */
{
while (fgets(temp, PATHLEN, etfile))
{
(void)Strip_Trailing(temp, '\n');
(void)Strip_Trailing(temp, '\r');
(void)Strip_Trailing(temp, ' ');
(void)Strip_Trailing(temp, '\t');
(void)Strip_Trailing(temp, ' ');
if (scan_after && eqstri(temp, scan_after))
after=TRUE;
if (after && *temp && !Scanned_Area(temp, ScanCmd))
(void)printf("Unknown area: `%s'\n", temp);
}
(void)fclose(etfile);
}
}
}
int MsgAttrToFlavour(dword attr)
{
if ((attr & (MSGCRASH|MSGHOLD))==(MSGCRASH|MSGHOLD))
return 'D';
else if (attr & MSGCRASH)
return 'C';
else if (attr & MSGHOLD)
return 'H';
else return 'O';
}
unsigned FlavourToMsgAttr(byte flavour)
{
switch (toupper(flavour))
{
default:
case 'O':
case 'N':
case 'F': return 0; /* nothing */
case 'C': return MSGCRASH;
case 'H': return MSGHOLD;
case 'D': return MSGCRASH | MSGHOLD;
}
}
int NetmailArea(struct _cfgarea *ar)
{
struct _cfgarea *net;
for (net=config.netmail; net; net=net->next_type)
if (net==ar)
return TRUE;
return FALSE;
}
int BadmsgsArea(struct _cfgarea *ar)
{
struct _cfgarea *net;
for (net=config.badmsgs; net; net=net->next_type)
if (net==ar)
return TRUE;
return FALSE;
}
int DupesArea(struct _cfgarea *ar)
{
struct _cfgarea *net;
for (net=config.dupes; net; net=net->next_type)
if (net==ar)
return TRUE;
return FALSE;
}
NETADDR *SblistToNetaddr(struct _sblist *sb, NETADDR *n)
{
n->zone=sb->zone;
n->net=sb->net;
n->node=sb->node;
n->point=sb->point;
return n;
}
struct _sblist *NetaddrToSblist(NETADDR *n, struct _sblist *sb)
{
sb->zone=n->zone;
sb->net=n->net;
sb->node=n->node;
sb->point=n->point;
return sb;
}
#ifdef SWAP
static char * near MakeFullPath(char *cmd)
{
char this[PATHLEN];
char progname[PATHLEN];
char *path=getenv("PATH");
char *try;
char *newpath;
char *s;
word last=TRUE;
/* The name of the program to run is the first word of the command */
getword(cmd, progname, " ;", 1);
/* If no path set, use the current directory */
newpath=path ? sstrdup(path) : sstrdup(".");
/* Now scan all directories on the path */
#ifndef UNIX
for (s=strtok(newpath, " ;"); s || last; s=strtok(NULL, " ;"))