X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git;a=blobdiff_plain;f=client%2Fadh-main.c;h=16412949666e40fda65631ebc735156e6a64c245;hp=5a4235dbf9163926d62c8e8b46b132b766565f03;hb=3d5cde09d167be1609d27d0d93de2096250a310c;hpb=30eb1b62ec26c4cd58c29189011ef76c673b3d91

diff --git a/client/adh-main.c b/client/adh-main.c
index 5a4235d..1641294 100644
--- a/client/adh-main.c
+++ b/client/adh-main.c
@@ -5,10 +5,10 @@
  */
 /*
  *  This file is
- *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ *    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
  *
  *  It is part of adns, which is
- *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ *    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
  *    Copyright (C) 1999 Tony Finch <dot@dotat.at>
  *  
  *  This program is free software; you can redistribute it and/or modify
@@ -26,60 +26,227 @@
  *  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
  */
 
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
+#include "adnshost.h"
 
 void sysfail(const char *what, int errnoval) {
   fprintf(stderr,"adnshost failed: %s: %s\n",what,strerror(errnoval));
   exit(10);
 }
 
-static void domain_do_arg(const char *domain) {
-  if (ov_pipe) usageerr("-f/--pipe not consistent with domains on command line");
-  domain_do(arg);
+void usageerr(const char *fmt, ...) {
+  va_list al;
+  fputs("adnshost usage error: ",stderr);
+  va_start(al,fmt);
+  vfprintf(stderr,fmt,al);
+  va_end(al);
+  putc('\n',stderr);
+  exit(11);
 }
 
-static void of_type(const struct optinfo *oi, const char *arg) { abort(); }
+void outerr(void) {
+  sysfail("write to stdout",errno);
+}
 
-int main(int argc, const char *const *argv) {
-  const char *arg;
-  const 
+void *xmalloc(size_t sz) {
+  void *p;
+
+  p= malloc(sz); if (!p) sysfail("malloc",sz);
+  return p;
+}
+
+char *xstrsave(const char *str) {
+  char *p;
   
-  while (arg= *++argv) {
-    if (arg[0] != '-') {
-      if (arg[1] == '-') {
+  p= xmalloc(strlen(str)+1);
+  strcpy(p,str);
+  return p;
+}
+
+void of_type(const struct optioninfo *oi, const char *arg, const char *arg2) {
+  static const struct typename {
+    adns_rrtype type;
+    const char *desc;
+  } typenames[]= {
+    /* enhanced versions */
+    { adns_r_ns,     "ns"     },
+    { adns_r_soa,    "soa"    },
+    { adns_r_ptr,    "ptr"    },
+    { adns_r_mx,     "mx"     },
+    { adns_r_rp,     "rp"     },
+    { adns_r_addr,   "addr"   },
+    
+    /* types with only one version */
+    { adns_r_cname,  "cname"  },
+    { adns_r_hinfo,  "hinfo"  },
+    { adns_r_txt,    "txt"    },
+    
+    /* raw versions */
+    { adns_r_a,        "a"    },
+    { adns_r_ns_raw,   "ns-"  },
+    { adns_r_soa_raw,  "soa-" },
+    { adns_r_ptr_raw,  "ptr-" },
+    { adns_r_mx_raw,   "mx-"  },
+    { adns_r_rp_raw,   "rp-"  },
+
+    { adns_r_none, 0 }
+  };
+
+  const struct typename *tnp;
+
+  for (tnp=typenames;
+       tnp->type && strcmp(arg,tnp->desc);
+       tnp++);
+  if (!tnp->type) usageerr("unknown RR type %s",arg);
+  ov_type= tnp->type;
+}
+
+int rcode;
+
+static void process_optarg(const char *arg,
+			   const char *const **argv_p,
+			   const char *value) {
+  const struct optioninfo *oip;
+  const char *arg2;
+  int invert;
+
+  if (arg[0] == '-' || arg[0] == '+') {
+    if (arg[0] == '-' && arg[1] == '-') {
+      if (!strncmp(arg,"--no-",5)) {
+	invert= 1;
+	oip= opt_findl(arg+5);
+      } else {
+	invert= 0;
 	oip= opt_findl(arg+2);
+      }
+      if (oip->type == ot_funcarg) {
+	arg= argv_p ? *++(*argv_p) : value;
+	if (!arg) usageerr("option --%s requires a value argument",oip->lopt);
+	arg2= 0;
+      } else if (oip->type == ot_funcarg2) {
+	assert(argv_p);
+	arg= *++(*argv_p);
+	if (arg) arg2= *++(*argv_p);
+	if (!arg || !arg2)
+	  usageerr("option --%s requires two more arguments", oip->lopt);
+      } else {
+	if (value) usageerr("option --%s does not take a value",oip->lopt);
+	arg= 0;
+	arg2= 0;
+      }
+      opt_do(oip,invert,arg,arg2);
+    } else if (arg[0] == '-' && arg[1] == 0) {
+      arg= argv_p ? *++(*argv_p) : value;
+      if (!arg) usageerr("option `-' must be followed by a domain");
+      query_do(arg);
+    } else { /* arg[1] != '-', != '\0' */
+      invert= (arg[0] == '+');
+      ++arg;
+      while (*arg) {
+	oip= opt_finds(&arg);
 	if (oip->type == ot_funcarg) {
-	  arg= *++argv;
-	  if (!arg) usageerr("option --%s requires a value argument",oip->lopt);
-	} else {
-	  arg= 0;
-	}
-	opt_do(oip,arg);
-      } else if (arg[1] == 0) {
-	arg= *++argv;
-	if (!arg) usageerr("option `-' must be followed by a domain");
-	domain_do_arg(arg);
-      } else { /* arg[1] != '-', != '\0' */
-	++arg;
-	while (*arg) {
-	  oip= opt_finds(&arg);
-	  if (oip->type == ot_funcarg) {
-	    if (!*arg) {
-	      arg= *++argv;
-	      if (!arg) usageerr("option -%s requires a value argument",oip->sopt);
-	    }
-	    arg= "";
+	  if (!*arg) {
+	    arg= argv_p ? *++(*argv_p) : value;
+	    if (!arg) usageerr("option -%s requires a value argument",oip->sopt);
 	  } else {
-	    arg= 0;
+	    if (value) usageerr("two values for option -%s given !",oip->sopt);
 	  }
-	  opt_do(oip,arg);
+	  opt_do(oip,invert,arg,0);
+	  arg= "";
+	} else {
+	  if (value) usageerr("option -%s does not take a value",oip->sopt);
+	  opt_do(oip,invert,0,0);
 	}
       }
-    } else { /* arg[0] != '-' */
-      domain_do_arg(arg);
     }
+  } else { /* arg[0] != '-' */
+    query_do(arg);
+  }
+}
+    
+static void read_stdin(void) {
+  static int used, avail;
+  static char *buf;
+
+  int anydone, r;
+  char *newline, *space;
+
+  anydone= 0;
+  while (!anydone || used) {
+    while (!(newline= memchr(buf,'\n',used))) {
+      if (used == avail) {
+	avail += 20; avail <<= 1;
+	buf= realloc(buf,avail);
+	if (!buf) sysfail("realloc stdin buffer",errno);
+      }
+      do {
+	r= read(0,buf+used,avail-used);
+      } while (r < 0 && errno == EINTR);
+      if (r == 0) {
+	if (used) {
+	  /* fake up final newline */
+	  buf[used++]= '\n';
+	  r= 1;
+	} else {
+	  ov_pipe= 0;
+	  return;
+	}
+      }
+      if (r < 0) sysfail("read stdin",errno);
+      used += r;
+    }
+    *newline++= 0;
+    space= strchr(buf,' ');
+    if (space) *space++= 0;
+    process_optarg(buf,0,space);
+    used -= (newline-buf);
+    memmove(buf,newline,used);
+    anydone= 1;
+  }
+}
+
+int main(int argc, const char *const *argv) {
+  struct timeval *tv, tvbuf;
+  adns_query qu;
+  void *qun_v;
+  adns_answer *answer;
+  int r, maxfd;
+  fd_set readfds, writefds, exceptfds;
+  const char *arg;
+  
+  while ((arg= *++argv)) process_optarg(arg,&argv,0);
+
+  if (!ov_pipe && !ads) usageerr("no domains given, and -f/--pipe not used; try --help");
+
+  ensure_adns_init();
+
+  for (;;) {
+    for (;;) {
+      qu= ov_asynch ? 0 : outstanding.head ? outstanding.head->qu : 0;
+      r= adns_check(ads,&qu,&answer,&qun_v);
+      if (r == EAGAIN) break;
+      if (r == ESRCH) { if (!ov_pipe) goto x_quit; else break; }
+      assert(!r);
+      query_done(qun_v,answer);
+    }
+    maxfd= 0;
+    FD_ZERO(&readfds);
+    FD_ZERO(&writefds);
+    FD_ZERO(&exceptfds);
+    if (ov_pipe) {
+      maxfd= 1;
+      FD_SET(0,&readfds);
+    }
+    tv= 0;
+    adns_beforeselect(ads, &maxfd, &readfds,&writefds,&exceptfds, &tv,&tvbuf,0);
+    r= select(maxfd, &readfds,&writefds,&exceptfds, tv);
+    if (r == -1) {
+      if (errno == EINTR) continue;
+      sysfail("select",errno);
+    }
+    adns_afterselect(ads, maxfd, &readfds,&writefds,&exceptfds, 0);
+    if (ov_pipe && FD_ISSET(0,&readfds)) read_stdin();
   }
-  abort();
+x_quit:
+  if (fclose(stdout)) outerr();
+  exit(rcode);
 }