/* $Header: rcstuff.c,v 4.3.1.3 85/05/29 09:13:25 lwall Exp $ * * $Log: rcstuff.c,v $ * Revision 4.3.1.3 85/05/29 09:13:25 lwall * %d that should be %ld. * * Revision 4.3.1.2 85/05/17 11:40:08 lwall * Sped up "rn -c" by not mallocing unnecessarily. * * Revision 4.3.1.1 85/05/10 11:37:18 lwall * Branch for patches. * * Revision 4.3 85/05/01 11:45:56 lwall * Baseline for release with 4.3bsd. * */ #include "EXTERN.h" #include "common.h" #include "util.h" #include "ngdata.h" #include "term.h" #include "final.h" #include "rn.h" #include "intrp.h" #include "only.h" #include "rcln.h" #include "server.h" #include "INTERN.h" #include "rcstuff.h" char *rcname INIT(Nullch); /* path name of .newsrc file */ char *rctname INIT(Nullch); /* path name of temp .newsrc file */ char *rcbname INIT(Nullch); /* path name of backup .newsrc file */ char *softname INIT(Nullch); /* path name of .rnsoft file */ FILE *rcfp INIT(Nullfp); /* .newsrc file pointer */ #ifdef HASHNG short hashtbl[HASHSIZ]; #endif bool rcstuff_init() { register NG_NUM newng; register char *s; register int i; register bool foundany = FALSE; char *some_buf; long length; #ifdef SERVER char *cp; #endif #ifdef HASHNG for (i=0; i= MAXRCLINE) { /* check for overflow */ fputs("Too many lines in .newsrc\n",stdout) FLUSH; finalize(1); } if (tmpfp != Nullfp && fgets(tmpbuf,10,tmpfp) != Nullch) softptr[newng] = atoi(tmpbuf); else softptr[newng] = 0; some_buf[--length] = '\0'; /* wipe out newline */ if (checkflag) /* no extra mallocs for -c */ rcline[newng] = some_buf; else if (some_buf == buf) { rcline[newng] = savestr(some_buf); /* make a semipermanent copy */ } else { /*NOSTRICT*/ #ifndef lint some_buf = saferealloc(some_buf,(MEM_SIZE)(length+1)); #endif lint rcline[newng] = some_buf; } #ifdef NOTDEF if (strnEQ(some_buf,"to.",3)) { /* is this a non-newsgroup? */ nextrcline--; /* destroy this line */ continue; } #endif if (*some_buf == ' ' || *some_buf == '\t' || strnEQ(some_buf,"options",7)) { /* non-useful line? */ toread[newng] = TR_JUNK; rcchar[newng] = ' '; rcnums[newng] = 0; continue; } for (s = rcline[newng]; *s && *s != ':' && *s != NEGCHAR; s++) ; if (!*s && !checkflag) { #ifndef lint rcline[newng] = saferealloc(rcline[newng],(MEM_SIZE)length+2); #endif lint s = rcline[newng] + length; *s = ':'; *(s+1) = '\0'; } rcchar[newng] = *s; /* salt away the : or ! */ rcnums[newng] = (char)(s - rcline[newng]); rcnums[newng]++; /* remember where it was */ *s = '\0'; /* null terminate newsgroup name */ #ifdef HASHNG if (!checkflag) sethash(newng); #endif if (rcchar[newng] == NEGCHAR) { toread[newng] = TR_UNSUB; continue; } /* now find out how much there is to read */ if (!inlist(buf) || (suppress_cn && foundany && !paranoid)) toread[newng] = TR_NONE; /* no need to calculate now */ else set_toread(newng); #ifdef VERBOSE if (!checkflag && softmisses == 1) { softmisses++; /* lie a little */ fputs("(Revising soft pointers--be patient.)\n",stdout) FLUSH; } #endif if (toread[newng] > TR_NONE) { /* anything unread? */ if (!foundany) { starthere = newng; foundany = TRUE; /* remember that fact*/ } if (suppress_cn) { /* if no listing desired */ if (checkflag) { /* if that is all they wanted */ finalize(1); /* then bomb out */ } } else { #ifdef VERBOSE IF(verbose) printf("Unread news in %-20s %5ld article%s\n", rcline[newng],(long)toread[newng], toread[newng]==TR_ONE ? nullstr : "s") FLUSH; ELSE #endif #ifdef TERSE printf("%s: %ld article%s\n", rcline[newng],(long)toread[newng], toread[newng]==TR_ONE ? nullstr : "s") FLUSH; #endif if (int_count) { countdown = 1; int_count = 0; } if (countdown) { if (! --countdown) { fputs("etc.\n",stdout) FLUSH; if (checkflag) finalize(1); suppress_cn = TRUE; } } } } } fclose(rcfp); /* close .newsrc */ if (tmpfp != Nullfp) fclose(tmpfp); /* close .rnsoft */ if (checkflag) { /* were we just checking? */ finalize(foundany); /* tell them what we found */ } if (paranoid) cleanup_rc(); #ifdef DEBUGGING if (debug & DEB_HASH) { page_init(); for (i=0; i= TR_NONE; } /* add a newsgroup to the .newsrc file (eventually) */ NG_NUM add_newsgroup(ngn) char *ngn; { register NG_NUM newng = nextrcline++; /* increment max rcline index */ rcnums[newng] = strlen(ngn) + 1; rcline[newng] = safemalloc((MEM_SIZE)(rcnums[newng] + 1)); strcpy(rcline[newng],ngn); /* and copy over the name */ *(rcline[newng] + rcnums[newng]) = '\0'; rcchar[newng] = ':'; /* call it subscribed */ toread[newng] = TR_NONE; /* just for prettiness */ #ifdef HASHNG sethash(newng); /* so we can find it again */ #endif #ifdef RELOCATE return relocate_newsgroup(newng,-1); #else return newng; #endif } #ifdef RELOCATE NG_NUM relocate_newsgroup(ngx,newng) NG_NUM ngx; NG_NUM newng; { char *dflt = (ngx!=current_ng ? "$^.L" : "$^L"); char *tmprcline; ART_UNREAD tmptoread; char tmprcchar; char tmprcnums; ACT_POS tmpsoftptr; register NG_NUM i; #ifdef DEBUGGING ART_NUM tmpngmax; #endif #ifdef CACHEFIRST ART_NUM tmpabs1st; #endif starthere = 0; /* Disable this optimization */ writesoft = TRUE; /* Update soft pointer file */ if (ngx < nextrcline-1) { #ifdef HASHNG for (i=0; i ngx) --hashtbl[i]; else if (hashtbl[i] == ngx) hashtbl[i] = nextrcline-1; } #endif tmprcline = rcline[ngx]; tmptoread = toread[ngx]; tmprcchar = rcchar[ngx]; tmprcnums = rcnums[ngx]; tmpsoftptr = softptr[ngx]; #ifdef DEBUGGING tmpngmax = ngmax[ngx]; #endif #ifdef CACHEFIRST tmpabs1st = abs1st[ngx]; #endif for (i=ngx+1; i ngx) current_ng--; if (newng < 0) { reask_reloc: unflush_output(); /* disable any ^O in effect */ #ifdef VERBOSE IF(verbose) printf("\nPut newsgroup where? [%s] ", dflt); ELSE #endif #ifdef TERSE printf("\nPut where? [%s] ", dflt); #endif fflush(stdout); reinp_reloc: eat_typeahead(); getcmd(buf); if (errno || *buf == '\f') { /* if return from stop signal */ goto reask_reloc; /* give them a prompt again */ } setdef(buf,dflt); #ifdef VERIFY printcmd(); #endif if (*buf == 'h') { #ifdef VERBOSE IF(verbose) { printf("\n\n\ Type ^ to put the newsgroup first (position 0).\n\ Type $ to put the newsgroup last (position %d).\n", nextrcline-1); printf("\ Type . to put it before the current newsgroup (position %d).\n", current_ng); printf("\ Type -newsgroup name to put it before that newsgroup.\n\ Type +newsgroup name to put it after that newsgroup.\n\ Type a number between 0 and %d to put it at that position.\n", nextrcline-1); printf("\ Type L for a listing of newsgroups and their positions.\n") FLUSH; } ELSE #endif #ifdef TERSE { printf("\n\n\ ^ to put newsgroup first (pos 0).\n\ $ to put last (pos %d).\n", nextrcline-1); printf("\ . to put before current newsgroup (pos %d).\n", current_ng); printf("\ -newsgroup to put before newsgroup.\n\ +newsgroup to put after.\n\ number in 0-%d to put at that pos.\n", nextrcline-1); printf("\ L for list of .newsrc.\n") FLUSH; } #endif goto reask_reloc; } else if (*buf == 'L') { putchar('\n') FLUSH; list_newsgroups(); goto reask_reloc; } else if (isdigit(*buf)) { if (!finish_command(TRUE)) /* get rest of command */ goto reinp_reloc; newng = atoi(buf); if (newng < 0) newng = 0; if (newng >= nextrcline) return nextrcline-1; } else if (*buf == '^') { putchar('\n') FLUSH; newng = 0; } else if (*buf == '$') { putchar('\n') FLUSH; return nextrcline-1; } else if (*buf == '.') { putchar('\n') FLUSH; newng = current_ng; } else if (*buf == '-' || *buf == '+') { if (!finish_command(TRUE)) /* get rest of command */ goto reinp_reloc; newng = find_ng(buf+1); if (newng == nextrcline) { fputs("Not found.",stdout) FLUSH; goto reask_reloc; } if (*buf == '+') newng++; } else { printf("\n%s",hforhelp) FLUSH; settle_down(); goto reask_reloc; } } if (newng < nextrcline-1) { #ifdef HASHNG for (i=0; i= newng) ++hashtbl[i]; } #endif tmprcline = rcline[nextrcline-1]; tmptoread = toread[nextrcline-1]; tmprcchar = rcchar[nextrcline-1]; tmprcnums = rcnums[nextrcline-1]; tmpsoftptr = softptr[nextrcline-1]; #ifdef DEBUGGING tmpngmax = ngmax[nextrcline-1]; #endif #ifdef CACHEFIRST tmpabs1st = abs1st[nextrcline-1]; #endif for (i=nextrcline-2; i>=newng; i--) { rcline[i+1] = rcline[i]; toread[i+1] = toread[i]; rcchar[i+1] = rcchar[i]; rcnums[i+1] = rcnums[i]; softptr[i+1] = softptr[i]; #ifdef DEBUGGING ngmax[i+1] = ngmax[i]; #endif #ifdef CACHEFIRST abs1st[i+1] = abs1st[i]; #endif } rcline[newng] = tmprcline; toread[newng] = tmptoread; rcchar[newng] = tmprcchar; rcnums[newng] = tmprcnums; softptr[newng] = tmpsoftptr; #ifdef DEBUGGING ngmax[newng] = tmpngmax; #endif #ifdef CACHEFIRST abs1st[newng] = tmpabs1st; #endif } if (current_ng >= newng) current_ng++; return newng; } #endif /* List out the newsrc with annotations */ void list_newsgroups() { register NG_NUM i; char tmpbuf[2048]; static char *status[] = {"(READ)","(UNSUB)","(BOGUS)","(JUNK)"}; int cmd; page_init(); print_lines("\ # Status Newsgroup\n\ ",STANDOUT); for (i=0; i= 0) set_toread(i); *(rcline[i] + rcnums[i] - 1) = rcchar[i]; if (toread[i] > 0) sprintf(tmpbuf,"%3d %6ld ",i,(long)toread[i]); else sprintf(tmpbuf,"%3d %7s ",i,status[-toread[i]]); safecpy(tmpbuf+13,rcline[i],2034); *(rcline[i] + rcnums[i] - 1) = '\0'; if (cmd = print_lines(tmpbuf,NOMARKING)) { if (cmd > 0) pushchar(cmd); break; } } int_count = 0; } /* find a newsgroup in .newsrc */ NG_NUM find_ng(ngnam) char *ngnam; { register NG_NUM ngnum; #ifdef HASHNG register int hashix = hash(ngnam); register int incr = 1; while ((ngnum = hashtbl[hashix]) >= 0) { if (strEQ(rcline[ngnum], ngnam) && toread[ngnum] >= TR_UNSUB) return ngnum; hashix = (hashix + incr) % HASHSIZ; incr += 2; /* offsets from original are in n*2 */ } return nextrcline; /* = notfound */ #else /* just do linear search */ for (ngnum = 0; ngnum < nextrcline; ngnum++) { if (strEQ(rcline[ngnum],ngnam)) break; } return ngnum; #endif } void cleanup_rc() { register NG_NUM ngx; register NG_NUM bogosity = 0; #ifdef VERBOSE IF(verbose) fputs("Checking out your .newsrc--hang on a second...\n",stdout) FLUSH; ELSE #endif #ifdef TERSE fputs("Checking .newsrc--hang on...\n",stdout) FLUSH; #endif for (ngx = 0; ngx < nextrcline; ngx++) { if (toread[ngx] >= TR_UNSUB) { set_toread(ngx); /* this may reset newsgroup */ /* or declare it bogus */ } if (toread[ngx] == TR_BOGUS) bogosity++; } for (ngx = nextrcline-1; ngx >= 0 && toread[ngx] == TR_BOGUS; ngx--) bogosity--; /* discount already moved ones */ if (nextrcline > 5 && bogosity > nextrcline / 2) { fputs( "It looks like the active file is messed up. Contact your news administrator,\n\ ",stdout); fputs( "leave the \"bogus\" groups alone, and they may come back to normal. Maybe.\n\ ",stdout) FLUSH; } #ifdef RELOCATE else if (bogosity) { #ifdef VERBOSE IF(verbose) fputs("Moving bogus newsgroups to the end of your .newsrc.\n", stdout) FLUSH; ELSE #endif #ifdef TERSE fputs("Moving boguses to the end.\n",stdout) FLUSH; #endif for (; ngx >= 0; ngx--) { if (toread[ngx] == TR_BOGUS) relocate_newsgroup(ngx,nextrcline-1); } #ifdef DELBOGUS reask_bogus: in_char("Delete bogus newsgroups? [ny] "); putchar('\n') FLUSH; setdef(buf,"n"); #ifdef VERIFY printcmd(); #endif if (*buf == 'h') { #ifdef VERBOSE IF(verbose) fputs("\ Type y to delete bogus newsgroups.\n\ Type n or SP to leave them at the end in case they return.\n\ ",stdout) FLUSH; ELSE #endif #ifdef TERSE fputs("y to delete, n to keep\n",stdout) FLUSH; #endif goto reask_bogus; } else if (*buf == 'n' || *buf == 'q') ; else if (*buf == 'y') { while (toread[nextrcline-1] == TR_BOGUS && nextrcline > 0) --nextrcline; /* real tough, huh? */ } else { fputs(hforhelp,stdout) FLUSH; settle_down(); goto reask_bogus; } #endif } #else #ifdef VERBOSE IF(verbose) fputs("You should edit bogus newsgroups out of your .newsrc.\n", stdout) FLUSH; ELSE #endif #ifdef TERSE fputs("Edit boguses from .newsrc.\n",stdout) FLUSH; #endif #endif paranoid = FALSE; } #ifdef HASHNG /* make an entry in the hash table for the current newsgroup */ void sethash(thisng) NG_NUM thisng; { register int hashix = hash(rcline[thisng]); register int incr = 1; #ifdef DEBUGGING static int hashhits = 0, hashtries = 0; #endif #ifdef DEBUGGING hashtries++; #endif while (hashtbl[hashix] >= 0) { #ifdef DEBUGGING hashhits++; if (debug & DEB_HASH) { printf(" Hash hits: %d / %d\n",hashhits, hashtries) FLUSH; } hashtries++; #endif hashix = (hashix + incr) % HASHSIZ; incr += 2; /* offsets from original are in n*2 */ } hashtbl[hashix] = thisng; } short prime[] = {1,2,-3,-5,7,11,-13,-17,19,23,-29,-31,37,41,-43,-47,53,57,-59, -61,67,71,-73,-79,83,89,-97,-101,1,1,1,1,1,1,1,1,1,1,1,1}; int hash(ngnam) register char *ngnam; { register int i = 0; register int ch; register int sum = 0; #ifdef DEBUGGING char *ngn = ngnam; #endif while (ch = *ngnam++) { sum += (ch + i) * prime[i]; /* gives ~ 10% hits at 25% full */ i++; } #ifdef DEBUGGING if (debug & DEB_HASH) printf("hash(%s) => %d => %d\n",ngn, sum, (sum<0?-sum:sum)%HASHSIZ) FLUSH; #endif if (sum < 0) sum = -sum; return sum % HASHSIZ; } #endif void newsrc_check() { rcfp = fopen(rcname,"r"); /* open it */ if (rcfp == Nullfp) { /* not there? */ #ifdef VERBOSE IF(verbose) fputs("\ Trying to set up a .newsrc file--running newsetup...\n\n\ ",stdout) FLUSH; ELSE #endif #ifdef TERSE fputs("Setting up .newsrc...\n",stdout) FLUSH; #endif if (doshell(sh,filexp(NEWSETUP)) || (rcfp = fopen(rcname,"r")) == Nullfp) { #ifdef VERBOSE IF(verbose) fputs("\ Can't create a .newsrc--you must do it yourself.\n\ ",stdout) FLUSH; ELSE #endif #ifdef TERSE fputs("(Fatal)\n",stdout) FLUSH; #endif finalize(1); } } else { UNLINK(rcbname); /* unlink backup file name */ link(rcname,rcbname); /* and backup current name */ } } /* write out the (presumably) revised .newsrc */ void write_rc() { register NG_NUM tmpng; register char *delim; rcfp = fopen(rctname, "w"); /* open .newsrc */ if (rcfp == Nullfp) { printf("Can't recreate .newsrc\n") FLUSH; finalize(1); } /* write out each line*/ for (tmpng = 0; tmpng < nextrcline; tmpng++) { if (rcnums[tmpng]) { delim = rcline[tmpng] + rcnums[tmpng] - 1; *delim = rcchar[tmpng]; } else delim = Nullch; #ifdef DEBUGGING if (debug & DEB_NEWSRC_LINE) printf("%s\n",rcline[tmpng]) FLUSH; #endif fprintf(rcfp,"%s\n",rcline[tmpng]); if (delim) *delim = '\0'; /* might still need this line */ } fclose(rcfp); /* close .newsrc */ UNLINK(rcname); link(rctname,rcname); UNLINK(rctname); if (writesoft) { tmpfp = fopen(filexp(softname), "w"); /* open .rnsoft */ if (tmpfp == Nullfp) { printf(cantcreate,filexp(softname)) FLUSH; return; } for (tmpng = 0; tmpng < nextrcline; tmpng++) { fprintf(tmpfp,"%ld\n",(long)softptr[tmpng]); } fclose(tmpfp); } } void get_old_rc() { UNLINK(rctname); link(rcname,rctname); UNLINK(rcname); link(rcbname,rcname); UNLINK(rcbname); }