citadel/cux2ascii.c

   1 /*
   2  * cux2ascii v2.3
   3  * see copyright.doc for copyright information
   4  *
   5  * This program is a filter which converts Citadel/UX binary message format
   6  * to standard UseNet news format.  Useful for Citadel<->News gateways.
   7  */
   8
   9 #include <fcntl.h>
  10 #include <stdio.h>
  11 #include <ctype.h>
  12 #include <time.h>
  13 #include "citadel.h"
  14
  15 long finduser();
  16
  17 void get_config();
  18 struct config config;
  19
  20
  21 main(argc,argv)
  22 int argc;
  23 char *argv[]; {
  24         struct tm *tm;
  25         int a,b,e,mtype,aflag;
  26         char bbb[100],ngn[100];
  27         long tmid;
  28         char tsid[64];
  29         char tuid[64];
  30         FILE *fp,*tfp;
  31         long now,msglen;
  32         char tflnm[16];
  33
  34         int cuunbatch = 0;
  35
  36         /* experimental cuunbatch header generation */
  37         for (a=0; a<argc; ++a) {
  38                 if (!strcmp(argv[a],"-c")) cuunbatch = 1;
  39                 }
  40
  41         get_config();
  42
  43         sprintf(tflnm,"/tmp/c2a%d",getpid());
  44
  45         fp=stdin;
  46    while (1) {
  47         do {
  48                 e=getc(fp);
  49                 if (e<0) exit(0);
  50                 } while(e!=255);
  51         mtype=getc(fp); aflag=getc(fp);
  52
  53         tmid = 0L;
  54         strcpy(tsid,FQDN);
  55         strcpy(tuid,"postmaster");
  56
  57         tfp=fopen(tflnm,"w");
  58    do {
  59         b=getc(fp);
  60         if (b=='M') {
  61                 fprintf(tfp,"Message-ID: <%ld@%s>\n",tmid,tsid);
  62                 fprintf(tfp,"\n");
  63                 if (aflag!=1) fmout(80,fp,tfp);
  64                    else while(a=getc(fp), a>0) {
  65                         putc(a,tfp); if (a==13) putc(10,tfp);
  66                         }
  67                 }
  68         if ((b!='M')&&(b>0)) fpgetfield(fp,bbb);
  69         if (b=='I') tmid=atol(bbb);
  70         if (b=='N') {
  71                 strcpy(tsid,bbb);
  72                 if (!strcmp(tsid,NODENAME)) strcpy(tsid,FQDN);
  73                 for (a=0; a<strlen(tuid); ++a) if (tuid[a]==' ') tuid[a]='_';
  74                 fprintf(tfp,"From: %s@%s ",tuid,tsid);
  75                 for (a=0; a<strlen(tuid); ++a) if (tuid[a]=='_') tuid[a]=' ';
  76                 fprintf(tfp,"(%s)\n",tuid);
  77                 }
  78         if (b=='P') fprintf(tfp,"Path: %s\n",bbb);
  79         if (b=='A') strcpy(tuid,bbb);
  80         if (b=='O') {
  81                 xref(bbb,ngn);
  82                 fprintf(tfp,"Newsgroups: %s\n",ngn);
  83                 }
  84         if (b=='R') fprintf(tfp,"To: %s\n",bbb);
  85         if (b=='U') fprintf(tfp,"Subject: %s\n",bbb);
  86         if (b=='T') {
  87                 now=atol(bbb);
  88                 tm=(struct tm *)localtime(&now);
  89                 fprintf(tfp,"Date: %s",asctime(tm));
  90                 }
  91            } while ((b!='M')&&(b>0));
  92         msglen=ftell(tfp);
  93         fclose(tfp);
  94
  95         if (cuunbatch) {
  96                 printf("#! cuunbatch %ld\n",msglen);
  97                 }
  98         else {
  99                 printf("#! rnews %ld\n",msglen);
 100                 }
 101
 102         tfp=fopen(tflnm,"r");
 103         while(msglen--) putc(getc(tfp),stdout);
 104         fclose(tfp);
 105         unlink(tflnm);
 106    }
 107 exit(0);
 108 }
 109
 110 fpgetfield(fp,string)   /* level-2 break out next null-terminated string */
 111 FILE *fp;
 112 char string[];
 113 {
 114 int a,b;
 115 strcpy(string,"");
 116 a=0;
 117         do {
 118                 b=getc(fp);
 119                 if (b<1) { string[a]=0; return(0); }
 120                 string[a]=b;
 121                 ++a;
 122                 } while(b!=0);
 123         return(0);
 124 }
 125
 126 fmout(width,fp,mout)
 127 int width;
 128 FILE *fp,*mout;
 129         {
 130         int a,b,c,real,old;
 131         char aaa[140];
 132
 133         strcpy(aaa,""); old=255;
 134         c=1; /* c is the current pos */
 135 FMTA:   old=real; a=getc(fp); real=a;
 136         if (a<=0) goto FMTEND;
 137
 138         if ( ((a==13)||(a==10)) && (old!=13) && (old!=10) ) a=32;
 139         if ( ((old==13)||(old==10)) && (isspace(real)) ) {
 140                                                 fprintf(mout,"\n"); c=1; }
 141         if (a>126) goto FMTA;
 142
 143         if (a>32) {
 144         if ( ((strlen(aaa)+c)>(width-1)) && (strlen(aaa)>(width-1)) )
 145                 { fprintf(mout,"\n%s",aaa); c=strlen(aaa); aaa[0]=0; }
 146          b=strlen(aaa); aaa[b]=a; aaa[b+1]=0; }
 147         if (a==32) {    if ((strlen(aaa)+c)>(width-1)) {
 148                                                         fprintf(mout,"\n");
 149                                                         c=1;
 150                                                         }
 151                         fprintf(mout,"%s ",aaa); ++c; c=c+strlen(aaa);
 152                         strcpy(aaa,""); goto FMTA; }
 153         if ((a==13)||(a==10)) {
 154                                 fprintf(mout,"%s\n",aaa); c=1;
 155                                 strcpy(aaa,""); goto FMTA; }
 156         goto FMTA;
 157
 158 FMTEND: fprintf(mout,"\n");
 159         return(0);
 160 }
 161
 162 xref(roomname,newsgroup)
 163 char *roomname,*newsgroup; {
 164         char tbuf[128];
 165         FILE *fp;
 166         int commapos,a;
 167
 168         strcpy(newsgroup,roomname);
 169         fp=fopen("./network/rnews.xref","r");
 170         if (fp==NULL) return(1);
 171         while (fgets(tbuf,128,fp)!=NULL) {
 172                 tbuf[strlen(tbuf)-1]=0;         /* strip off the newline */
 173                 a=strlen(tbuf);
 174                 while (a--) if (tbuf[a]==',') commapos=a;
 175                 tbuf[commapos]=0;
 176                 if (!strcasecmp(&tbuf[commapos+1],roomname))
 177                         strcpy(newsgroup,tbuf);
 178                 }
 179         fclose(fp);
 180         return(0);
 181         }