mdw@git.distorted.org.uk Git - ezmlm/blob - ezmlm-split.c

   1 /*$Id: ezmlm-split.c,v 1.6 1999/05/12 22:17:54 lindberg Exp $*/
   2 /*$Name: ezmlm-idx-040 $*/
   3
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include "error.h"
   7 #include "stralloc.h"
   8 #include "str.h"
   9 #include "env.h"
  10 #include "sig.h"
  11 #include "slurp.h"
  12 #include "getconf.h"
  13 #include "strerr.h"
  14 #include "byte.h"
  15 #include "getln.h"
  16 #include "case.h"
  17 #include "qmail.h"
  18 #include "substdio.h"
  19 #include "readwrite.h"
  20 #include "quote.h"
  21 #include "now.h"
  22 #include "uint32.h"
  23 #include "fmt.h"
  24 #include "errtxt.h"
  25 #include "idx.h"
  26
  27 #define FATAL "ezmlm-split: fatal: "
  28 #define INFO "ezmlm-split: info: "
  29
  30 int flagdo = 1;         /* default is manager function */
  31
  32 char *sender;
  33 char *split;
  34 stralloc outhost = {0};
  35 stralloc inlocal = {0};
  36 stralloc outlocal = {0};
  37 stralloc target = {0};
  38 stralloc lctarget = {0};
  39 stralloc line = {0};
  40 stralloc domain = {0};
  41 stralloc name = {0};
  42 stralloc from = {0};
  43 stralloc to = {0};
  44 char strnum[FMT_ULONG];
  45 unsigned long lineno;
  46 int flagfound;
  47
  48 void die_usage() {
  49   strerr_die1x(100,"ezmlm-split: usage: ezmlm-split [-dD] dir [splitfile]"); }
  50
  51 void die_nomem() { strerr_die2x(111,FATAL,ERR_NOMEM); }
  52
  53 void die_badaddr()
  54 {
  55   strerr_die2x(100,FATAL,ERR_BAD_ADDRESS);
  56 }
  57
  58 void die_syntax()
  59 {
  60   strnum[fmt_ulong(strnum,lineno)] = '\0';
  61   strerr_die6x(111,FATAL,split," syntax error line ",strnum,": ",line.s);
  62 }
  63
  64 char spbuf[1024];       /* should normally hold entire file */
  65 substdio sssp;
  66
  67 struct qmail qq;
  68 int qqwrite(fd,buf,len) int fd; char *buf; unsigned int len;
  69 {
  70   qmail_put(&qq,buf,len);
  71   return (int) len;
  72 }
  73 char qqbuf[1];
  74 substdio ssqq = SUBSTDIO_FDBUF(qqwrite,-1,qqbuf,(int) sizeof(qqbuf));
  75
  76 char outbuf[1];
  77 substdio ssout = SUBSTDIO_FDBUF(write,1,outbuf,(int) sizeof(outbuf));
  78
  79 char inbuf[1024];
  80 substdio ssin = SUBSTDIO_FDBUF(read,0,inbuf,(int) sizeof(inbuf));
  81
  82 int findname()
  83 /* returns 1 if a matching line was found, 0 otherwise. name will contain */
  84 /* the correct list address in either case */
  85 {
  86   char *cpat,*cp,*cpname,*cp1,*cp2,*cplast;
  87   unsigned long u;
  88   uint32 h;
  89   unsigned char hash,hash_hi,hash_lo;
  90   unsigned int pos,pos_name,pos_hi;
  91   char ch;
  92   int fd,match;
  93
  94   /* make case insensitive hash */
  95   flagfound = 0;                        /* default */
  96   cpname = "";                          /* default */
  97   if (!stralloc_copy(&lctarget,&target)) die_nomem();
  98   case_lowerb(lctarget.s,lctarget.len -1);
  99   h = 5381;
 100   cp = lctarget.s;
 101   while ((ch = *cp++)) {
 102     h = (h + (h << 5)) ^ (uint32) ch;
 103   }
 104   hash = (h % 53);
 105
 106   /* make domain pointer */
 107   cpat = lctarget.s + str_chr(lctarget.s,'@');
 108   if (!*cpat)
 109     strerr_die4x(100,FATAL,ERR_ADDR_AT,": ",target.s);
 110   cplast = cpat + str_len(cpat) - 1;
 111   if (*cplast == '.') --cplast;         /* annonying special case */
 112   cp1 = cpat + byte_rchr(cpat,cplast - cpat, '.');
 113   if (cp1 != cplast) {                  /* got one '.' */
 114     if (!stralloc_copyb(&domain,cp1 + 1, cplast - cp1)) die_nomem();
 115     cp2 = cpat + byte_rchr(cpat, cp1 - cpat,'.');
 116     if (cp2 == cp1) cp2 = cpat;
 117     ++cp2;
 118     if (!stralloc_append(&domain,".")) die_nomem();
 119     if (!stralloc_catb(&domain,cp2, cp1 - cp2)) die_nomem();
 120   } else                                /* no '.' */
 121     if (!stralloc_copyb(&domain,cpat + 1,cplast - cpat)) die_nomem();
 122   if (!stralloc_0(&domain)) die_nomem();
 123
 124   if ((fd = open_read(split)) == -1)
 125     strerr_die4sys(111,FATAL,ERR_OPEN,split,": ");
 126   substdio_fdbuf(&sssp,read,fd,spbuf,(int) sizeof(spbuf));
 127   lineno = 0;
 128   for (;;) {    /* dom:hash_lo:hash_hi:listaddress */
 129     if (getln(&sssp,&line,&match,'\n') == -1)
 130       strerr_die4sys(111,FATAL,ERR_READ,split,": ");
 131      lineno++;
 132     if (!match)
 133       break;
 134     if (line.s[0] == '#') continue;     /* comment */
 135     line.s[line.len - 1] = '\0';        /* no need to allow \0 in lines */
 136     if (!line.s[pos = str_chr(line.s,':')])
 137       continue;                         /* usually blank line */
 138     line.s[pos] = '\0';
 139     if (pos == 0 ||                     /* no domain */
 140           (case_starts(domain.s,line.s))) {     /* or matching domain */
 141         if (!line.s[++pos]) die_syntax();
 142         pos_hi = pos + str_chr(line.s + pos,':');
 143         if (!line.s[pos_hi]) die_syntax();
 144         pos_hi++;
 145         (void) scan_ulong(line.s + pos, &u);    /* scan_uint() not in ezmlm */
 146         hash_lo = (unsigned char) u;
 147         (void) scan_ulong(line.s + pos_hi, &u);
 148         hash_hi = (unsigned char) u;
 149         pos_name = pos_hi + str_chr(line.s + pos_hi,':');
 150         if (pos_hi == pos_name) hash_hi = 52L;  /* default hi = 52 */
 151         if (line.s[pos_name]) pos_name++;
 152         if (hash > hash_hi || hash < hash_lo) continue; /* not us */
 153         cpname = line.s + pos_name;
 154         while (*cpname &&                               /* isolate name */
 155             (*cpname == ' ' || *cpname == '\t')) cpname++;
 156         pos = line.len - 2;
 157         while (pos && (line.s[pos] == '\n' || line.s[pos] == ' ' ||
 158                 line.s[pos] == '\t')) line.s[pos--] = '\0';
 159         break;
 160     }
 161   }
 162   close(fd);
 163
 164   if (*cpname) {
 165     if (!stralloc_copys(&name,cpname)) die_nomem();
 166     if (byte_chr(name.s,name.len,'@') == name.len) {    /* local sublist */
 167       if (!stralloc_append(&name,"@")) die_nomem();
 168       if (!stralloc_cat(&name,&outhost)) die_nomem();
 169     }
 170     if (!stralloc_0(&name)) die_nomem();
 171     return 1;
 172   } else {                      /* match without name or no match =>this list */
 173     if (!stralloc_copy(&name,&outlocal)) die_nomem();
 174     if (!stralloc_append(&name,"@")) die_nomem();
 175     if (!stralloc_cat(&name,&outhost)) die_nomem();
 176     if (!stralloc_0(&name)) die_nomem();
 177     return 0;
 178   }
 179 }
 180
 181 void main(argc,argv)
 182 int argc;
 183 char **argv;
 184 {
 185   char *dir;
 186   char *local;
 187   char *action;
 188   char *def;
 189   char *dtline;
 190   char *nhost;
 191   char *err;
 192   unsigned int i;
 193   int match;
 194   int optind = 1;
 195
 196   sig_pipeignore();
 197
 198   dir = argv[optind++];
 199   if (!dir) die_usage();
 200   if (dir[0] == '-') {
 201     if (dir[1] == 'd') flagdo = 1;
 202     else if (dir[1] == 'D') flagdo = 0;
 203     else die_usage();
 204     if (!(dir = argv[optind++])) die_usage();
 205   }
 206   if (!(split = argv[optind]))
 207     split = "split";
 208
 209   if (chdir(dir) == -1)
 210     strerr_die4sys(111,FATAL,ERR_SWITCH,dir,": ");
 211
 212   getconf_line(&outhost,"outhost",1,FATAL,dir);
 213   getconf_line(&outlocal,"outlocal",1,FATAL,dir);
 214
 215   if (flagdo) {
 216     sender = env_get("SENDER");
 217     if (!sender) strerr_die2x(100,FATAL,ERR_NOSENDER);
 218     if (!*sender)
 219       strerr_die2x(100,FATAL,ERR_BOUNCE);
 220     if (!sender[str_chr(sender,'@')])
 221       strerr_die2x(100,FATAL,ERR_ANONYMOUS);
 222     if (str_equal(sender,"#@[]"))
 223       strerr_die2x(100,FATAL,ERR_BOUNCE);
 224
 225     def = env_get("DEFAULT");
 226     if (def) {
 227       action = def;
 228     } else {
 229       local = env_get("LOCAL");
 230       if (!local) strerr_die2x(100,FATAL,ERR_NOLOCAL);
 231       getconf_line(&inlocal,"inlocal",1,FATAL,dir);
 232       if (inlocal.len > str_len(local)) die_badaddr();
 233       if (case_diffb(inlocal.s,inlocal.len,local)) die_badaddr();
 234       action = local + inlocal.len + 1;
 235     }
 236     if (!stralloc_copys(&target,sender)) die_nomem();
 237     if (action[0]) {
 238       i = str_chr(action,'-');
 239       if (action[i]) {
 240         action[i] = '\0';
 241         if (!stralloc_copys(&target,action + i + 1)) die_nomem();
 242         i = byte_rchr(target.s,target.len,'=');
 243         if (i < target.len)
 244           target.s[i] = '@';
 245       }
 246     }
 247     if (!stralloc_0(&target)) die_nomem();
 248
 249     if (case_diffs(action,ACTION_SUBSCRIBE) &&
 250       case_diffs(action,ALT_SUBSCRIBE) &&
 251       case_diffs(action,ACTION_UNSUBSCRIBE) &&
 252       case_diffs(action,ALT_UNSUBSCRIBE))
 253     _exit(0);                   /* not for us */
 254
 255     if (findname()) {
 256                                 /* new sender */
 257       if (!stralloc_copy(&from,&outlocal)) die_nomem();
 258       if (!stralloc_cats(&from,"-return-@")) die_nomem();
 259       if (!stralloc_cat(&from,&outhost)) die_nomem();
 260       if (!stralloc_0(&from)) die_nomem();
 261       if (name.s[i = str_rchr(name.s,'@')]) {           /* name must have '@'*/
 262         nhost = name.s + i;
 263         *(nhost++) = '\0';
 264       }
 265       if (!stralloc_copys(&to,name.s)) die_nomem();     /* local */
 266       if (!stralloc_append(&to,"-")) die_nomem();       /* - */
 267       if (!stralloc_cats(&to,action)) die_nomem();      /* subscribe */
 268       if (!stralloc_append(&to,"-")) die_nomem();       /* - */
 269       if (target.s[i = str_rchr(target.s,'@')])
 270         target.s[i] = '=';
 271       if (!stralloc_cats(&to,target.s)) die_nomem();    /* target */
 272       if (!stralloc_append(&to,"@")) die_nomem();       /* - */
 273       if (!stralloc_cats(&to,nhost)) die_nomem();       /* host */
 274       if (!stralloc_0(&to)) die_nomem();
 275       dtline = env_get("DTLINE");
 276       if (!dtline) strerr_die2x(100,FATAL,ERR_NODTLINE);
 277
 278       if (qmail_open(&qq,(stralloc *) 0) == -1)
 279         strerr_die2sys(111,FATAL,ERR_QMAIL_QUEUE);
 280       qmail_puts(&qq,dtline);                           /* delivered-to */
 281       if (substdio_copy(&ssqq,&ssin) != 0)
 282         strerr_die2sys(111,FATAL,ERR_READ_INPUT);
 283       qmail_from(&qq,from.s);
 284       qmail_to(&qq,to.s);
 285
 286       if (*(err = qmail_close(&qq)) != '\0')
 287         strerr_die3x(111,FATAL,ERR_TMP_QMAIL_QUEUE,err + 1);
 288
 289       strnum[fmt_ulong(strnum,qmail_qp(&qq))] = 0;
 290       strerr_die3x(99,INFO,"qp ",strnum);
 291     }
 292     _exit(0);
 293   } else {
 294
 295     for (;;) {
 296       if (getln(&ssin,&line,&match,'\n') == -1)
 297           strerr_die2sys(111,FATAL,ERR_READ_INPUT);
 298       if (!match) break;
 299       if (line.len == 1) continue;      /* ignore blank lines */
 300       if (line.s[0] == '#') continue;   /* ignore comments */
 301       if (!stralloc_copy(&target,&line)) die_nomem();
 302       target.s[target.len - 1] = '\0';
 303       (void) findname();
 304       if (!stralloc_cats(&name,": ")) die_nomem();
 305       if (!stralloc_cats(&name,target.s)) die_nomem();
 306       if (!stralloc_append(&name,"\n")) die_nomem();
 307       if (substdio_put(&ssout,name.s,name.len) == -1)
 308         strerr_die2sys(111,ERR_WRITE,"output: ");
 309     }
 310     if (substdio_flush(&ssout) == -1)
 311       strerr_die2sys(111,ERR_FLUSH,"output: ");
 312     _exit(0);
 313   }
 314 }
 315
 316