mdw@git.distorted.org.uk Git - adns/blob - regress/hcommon.c.m4

   1 m4_dnl hcommon.c
   2 m4_dnl (part of complex test harness, not of the library)
   3 m4_dnl - routines used for both record and playback
   4
   5 m4_dnl  This file is part of adns, which is
   6 m4_dnl    Copyright (C) 1997-2000,2003,2006,2014  Ian Jackson
   7 m4_dnl    Copyright (C) 2014  Mark Wooding
   8 m4_dnl    Copyright (C) 1999-2000,2003,2006  Tony Finch
   9 m4_dnl    Copyright (C) 1991 Massachusetts Institute of Technology
  10 m4_dnl  (See the file INSTALL for full details.)
  11 m4_dnl
  12 m4_dnl  This program is free software; you can redistribute it and/or modify
  13 m4_dnl  it under the terms of the GNU General Public License as published by
  14 m4_dnl  the Free Software Foundation; either version 3, or (at your option)
  15 m4_dnl  any later version.
  16 m4_dnl
  17 m4_dnl  This program is distributed in the hope that it will be useful,
  18 m4_dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 m4_dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 m4_dnl  GNU General Public License for more details.
  21 m4_dnl
  22 m4_dnl  You should have received a copy of the GNU General Public License
  23 m4_dnl  along with this program; if not, write to the Free Software Foundation.
  24
  25 m4_include(hmacros.i4)
  26
  27 #include <string.h>
  28 #include <errno.h>
  29 #include <stdlib.h>
  30 #include <stdarg.h>
  31
  32 #include <sys/types.h>
  33 #include <sys/socket.h>
  34 #include <netinet/in.h>
  35 #include <arpa/inet.h>
  36
  37 #include <unistd.h>
  38 #include <fcntl.h>
  39
  40 #include "harness.h"
  41 #include "internal.h"
  42
  43 vbuf vb;
  44 FILE *Toutputfile= 0;
  45 struct timeval currenttime;
  46
  47 const struct Terrno Terrnos[]= {
  48   { "EBADF",                     EBADF                        },
  49   { "EAGAIN",                    EAGAIN                       },
  50   { "EINPROGRESS",               EINPROGRESS                  },
  51   { "EINTR",                     EINTR                        },
  52   { "EINVAL",                    EINVAL                       },
  53   { "EMSGSIZE",                  EMSGSIZE                     },
  54   { "ENOBUFS",                   ENOBUFS                      },
  55   { "ENOENT",                    ENOENT                       },
  56   { "ENOPROTOOPT",               ENOPROTOOPT                  },
  57   { "ENOSPC",                    ENOSPC                       },
  58   { "EWOULDBLOCK",               EWOULDBLOCK                  },
  59   { "EHOSTUNREACH",              EHOSTUNREACH                 },
  60   { "ECONNRESET",                ECONNRESET                   },
  61   { "ECONNREFUSED",              ECONNREFUSED                 },
  62   { "EPIPE",                     EPIPE                        },
  63   { "ENOTSOCK",                  ENOTSOCK                     },
  64   {  0,                          0                            }
  65 };
  66
  67 static vbuf vbw;
  68
  69 int Hgettimeofday(struct timeval *tv, struct timezone *tz) {
  70   Tensurerecordfile();
  71   Tmust("gettimeofday","tz",!tz);
  72   *tv= currenttime;
  73   return 0;
  74 }
  75
  76 int Hwritev(int fd, const struct iovec *vector, size_t count) {
  77   size_t i;
  78
  79   vbw.used= 0;
  80   for (i=0; i<count; i++, vector++) {
  81     if (!adns__vbuf_append(&vbw,vector->iov_base,vector->iov_len)) Tnomem();
  82   }
  83   return Hwrite(fd,vbw.buf,vbw.used);
  84 }
  85
  86 m4_define(`hm_syscall', `
  87  hm_create_proto_q
  88 void Q$1(hm_args_massage($3,void)) {
  89
  90  vb.used= 0;
  91  Tvba("$1");
  92  m4_define(`hm_na',`')
  93  m4_define(`hm_arg_nullptr',`')
  94  m4_define(`hm_arg_int', `Tvbf(" $'`1=%d",$'`1);')
  95  m4_define(`hm_arg_fdset_io', `Tvbf(" $'`1="); Tvbfdset($'`2,$'`1);')
  96  m4_define(`hm_arg_pollfds_io', `Tvbf(" $'`1="); Tvbpollfds($'`1,$'`2);')
  97  m4_define(`hm_arg_timeval_in_rel_null', `
  98   if ($'`1) Tvbf(" $'`1=%ld.%06ld",(long)$'`1->tv_sec,(long)$'`1->tv_usec);
  99   else Tvba(" $'`1=null");')
 100  m4_define(`hm_arg_must', `')
 101  m4_define(`hm_arg_socktype', `
 102   Tvbf($'`1==SOCK_STREAM ? " $'`1=SOCK_STREAM" : " $'`1=SOCK_DGRAM");')
 103  m4_define(`hm_arg_addrfam', `
 104   Tvbf($'`1==AF_INET ? " $'`1=AF_INET" :
 105           $'`1==AF_INET6 ? " $'`1=AF_INET6" :
 106           " $'`1=AF_???");')
 107  m4_define(`hm_arg_ign', `')
 108  m4_define(`hm_arg_fd', `Tvbf(" $'`1=%d",$'`1);')
 109  m4_define(`hm_arg_fcntl_cmd_arg', `
 110   if ($'`1 == F_SETFL) {
 111    Tvbf(" $'`1=F_SETFL %s",arg & O_NONBLOCK ? "O_NONBLOCK|..." : "~O_NONBLOCK&...");
 112   } else if ($'`1 == F_GETFL) {
 113    Tvba(" $'`1=F_GETFL");
 114   } else {
 115    Tmust("$'`1","F_GETFL/F_SETFL",0);
 116   }')
 117  m4_define(`hm_arg_addr_in', `Tvba(" $'`1="); Tvbaddr($'`1,$'`2);')
 118  m4_define(`hm_arg_bytes_in', `')
 119  m4_define(`hm_arg_bytes_out', `Tvbf(" $'`4=%lu",(unsigned long)$'`4);')
 120  m4_define(`hm_arg_addr_out', `')
 121   $3
 122
 123  hm_create_nothing
 124  m4_define(`hm_arg_bytes_in', `Tvbbytes($'`2,$'`4);')
 125   $3
 126
 127   Q_vb();
 128 }
 129 ')
 130
 131 m4_define(`hm_specsyscall', `')
 132
 133 m4_include(`hsyscalls.i4')
 134
 135 void Tvbaddr(const struct sockaddr *addr, int len) {
 136   char buf[ADNS_ADDR2TEXT_BUFLEN];
 137   int err, port;
 138   int sz= sizeof(buf);
 139
 140   err= adns_addr2text(addr, 0, buf,&sz, &port);
 141   assert(!err);
 142
 143   Tvbf(strchr(buf, ':') ? "[%s]:%d" : "%s:%d", buf,port);
 144 }
 145
 146 void Tvbbytes(const void *buf, int len) {
 147   const byte *bp;
 148   int i;
 149
 150   if (!len) { Tvba("\n     ."); return; }
 151   for (i=0, bp=buf; i<len; i++, bp++) {
 152     if (!(i&31)) Tvba("\n     ");
 153     else if (!(i&3)) Tvba(" ");
 154     Tvbf("%02x",*bp);
 155   }
 156   Tvba(".");
 157 }
 158
 159 void Tvbfdset(int max, const fd_set *fds) {
 160   int i;
 161   const char *comma= "";
 162
 163   Tvba("[");
 164   for (i=0; i<max; i++) {
 165     if (!FD_ISSET(i,fds)) continue;
 166     Tvba(comma);
 167     Tvbf("%d",i);
 168     comma= ",";
 169   }
 170   Tvba("]");
 171 }
 172
 173 static void Tvbpollevents(int events) {
 174   const char *delim= "";
 175
 176   events &= (POLLIN|POLLOUT|POLLPRI);
 177   if (!events) { Tvba("0"); return; }
 178   if (events & POLLIN) { Tvba("POLLIN"); delim= "|"; }
 179   if (events & POLLOUT) { Tvba(delim); Tvba("POLLOUT"); delim= "|"; }
 180   if (events & POLLPRI) { Tvba(delim); Tvba("POLLPRI"); }
 181 }
 182
 183 void Tvbpollfds(const struct pollfd *fds, int nfds) {
 184   const char *comma= "";
 185
 186   Tvba("[");
 187   while (nfds>0) {
 188     Tvba(comma);
 189     Tvbf("{fd=%d, events=",fds->fd);
 190     Tvbpollevents(fds->events);
 191     Tvba(", revents=");
 192     Tvbpollevents(fds->revents);
 193     Tvba("}");
 194     comma= ", ";
 195     nfds--; fds++;
 196   }
 197   Tvba("]");
 198 }
 199
 200 void Tvberrno(int e) {
 201   const struct Terrno *te;
 202
 203   for (te= Terrnos; te->n && te->v != e; te++);
 204   assert(te->n);
 205   Tvba(te->n);
 206 }
 207
 208 void Tvba(const char *str) {
 209   if (!adns__vbuf_appendstr(&vb,str)) Tnomem();
 210 }
 211
 212 void Tvbvf(const char *fmt, va_list al) {
 213   char buf[1000];
 214   buf[sizeof(buf)-2]= '\t';
 215   vsnprintf(buf,sizeof(buf),fmt,al);
 216   assert(buf[sizeof(buf)-2] == '\t');
 217
 218   Tvba(buf);
 219 }
 220
 221 void Tvbf(const char *fmt, ...) {
 222   va_list al;
 223   va_start(al,fmt);
 224   Tvbvf(fmt,al);
 225   va_end(al);
 226 }
 227
 228
 229 void Tmust(const char *call, const char *arg, int cond) {
 230   if (cond) return;
 231   fprintf(stderr,"adns test harness: case not handled: system call %s, arg %s",call,arg);
 232   exit(-1);
 233 }
 234
 235 void Tfailed(const char *why) {
 236   fprintf(stderr,"adns test harness: failure: %s: %s\n",why,strerror(errno));
 237   exit(-1);
 238 }
 239
 240 void Tnomem(void) {
 241   Tfailed("unable to malloc/realloc");
 242 }
 243
 244 void Toutputerr(void) {
 245   Tfailed("write error on test harness output");
 246 }
 247
 248 struct malloced {
 249   struct malloced *next, *back;
 250   size_t sz;
 251   unsigned long count;
 252   struct { double d; long ul; void *p; void (*fp)(void); } data;
 253 };
 254
 255 static unsigned long malloccount, mallocfailat;
 256 static struct { struct malloced *head, *tail; } mallocedlist;
 257
 258 #define MALLOCHSZ ((char*)&mallocedlist.head->data - (char*)mallocedlist.head)
 259
 260 void *Hmalloc(size_t sz) {
 261   struct malloced *newnode;
 262   const char *mfavar;
 263   char *ep;
 264
 265   assert(sz);
 266
 267   newnode= malloc(MALLOCHSZ + sz);  if (!newnode) Tnomem();
 268
 269   LIST_LINK_TAIL(mallocedlist,newnode);
 270   newnode->sz= sz;
 271   newnode->count= ++malloccount;
 272   if (!mallocfailat) {
 273     mfavar= getenv("ADNS_REGRESS_MALLOCFAILAT");
 274     if (mfavar) {
 275       mallocfailat= strtoul(mfavar,&ep,10);
 276       if (!mallocfailat || *ep) Tfailed("ADNS_REGRESS_MALLOCFAILAT bad value");
 277     } else {
 278       mallocfailat= ~0UL;
 279     }
 280   }
 281   assert(newnode->count != mallocfailat);
 282   memset(&newnode->data,0xc7,sz);
 283   return &newnode->data;
 284 }
 285
 286 void Hfree(void *ptr) {
 287   struct malloced *oldnode;
 288
 289   if (!ptr) return;
 290
 291   oldnode= (void*)((char*)ptr - MALLOCHSZ);
 292   LIST_UNLINK(mallocedlist,oldnode);
 293   memset(&oldnode->data,0x38,oldnode->sz);
 294   free(oldnode);
 295 }
 296
 297 void *Hrealloc(void *op, size_t nsz) {
 298   struct malloced *oldnode;
 299   void *np;
 300   size_t osz;
 301
 302   if (op) { oldnode= (void*)((char*)op - MALLOCHSZ); osz= oldnode->sz; } else { osz= 0; }
 303   np= Hmalloc(nsz);
 304   if (osz) memcpy(np,op, osz>nsz ? nsz : osz);
 305   Hfree(op);
 306   return np;
 307 }
 308
 309 void Hexit(int rv) {
 310   struct malloced *loopnode;
 311
 312   Tshutdown();
 313   adns__vbuf_free(&vb);
 314   adns__vbuf_free(&vbw);
 315   if (mallocedlist.head) {
 316     fprintf(stderr,"adns test harness: memory leaked:");
 317     for (loopnode=mallocedlist.head; loopnode; loopnode=loopnode->next)
 318       fprintf(stderr," %lu",loopnode->count);
 319     putc('\n',stderr);
 320     if (ferror(stderr)) exit(-1);
 321   }
 322   exit(rv);
 323 }
 324
 325 pid_t Hgetpid(void) {
 326   return 2264; /* just some number */
 327 }
 328