1 files changed, 130 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libugly/netent.c b/mdk-stage1/dietlibc/libugly/netent.c
new file mode 100644
index 000000000..4710d0fe6
--- /dev/null
+++ b/mdk-stage1/dietlibc/libugly/netent.c
@@ -0,0 +1,130 @@
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <ctype.h>
+#include "dietfeatures.h"
+#include <netdb.h>
+#include <arpa/inet.h>
+
+static int netfd=-1;
+static char* netmap;
+static unsigned int netlen;
+
+static char* aliases[10];
+
+static char *cur;
+
+/* loopback	127.0.0.0	lo	# comment */
+struct netent *getnetent(void) {
+  static struct netent ne;
+  char *last;
+  int aliasidx;
+  if (netfd<0) {
+    netfd=open(_PATH_NETWORKS,O_RDONLY);
+    if (netfd<0) return 0;
+    fcntl (netfd, F_SETFD, FD_CLOEXEC);
+    netlen=lseek(netfd,0,SEEK_END);
+    netmap=mmap(0,netlen,PROT_READ|PROT_WRITE,MAP_PRIVATE,netfd,0);
+    if ((long)netmap==(-1)) goto error;
+    cur=netmap;
+  }
+  last=netmap+netlen;
+again:
+  ne.n_name=0;
+  ne.n_aliases=aliases; aliases[0]=0;
+  ne.n_addrtype=AF_INET;
+  ne.n_net=0;
+  if (cur>=last) return 0;
+  if (*cur=='#' || *cur=='\n') goto parseerror;
+  /* first, the primary name */
+  if (!isalpha(*cur)) goto parseerror;
+  ne.n_name=cur;
+  ne.n_aliases=aliases;
+  while (cur<last && isalnum(*cur)) cur++;
+  if (cur>=last) return 0;
+  if (*cur=='\n') goto parseerror;
+  *cur=0; cur++;
+  /* second, the ip */
+  while (cur<last && isblank(*cur)) cur++;
+  {
+    const char *tmp=cur;
+    char save;
+    while (cur<last && (isdigit(*cur) || *cur=='.')) ++cur;
+    save=*cur; *cur=0;
+    if (inet_aton(tmp,(struct in_addr*)&ne.n_net)==0) goto parseerror;
+    *cur=save;
+  }
+  if (cur>=last) return 0;
+  /* now the aliases */
+  for (aliasidx=0;aliasidx<10;++aliasidx) {
+    while (cur<last && isblank(*cur)) ++cur;
+    aliases[aliasidx]=cur;
+    while (cur<last && isalpha(*cur)) ++cur;
+    if (*cur=='\n') { *cur++=0; ++aliasidx; break; }
+    if (cur>=last || !isblank(*cur)) break;
+    *cur++=0;
+  }
+  aliases[aliasidx]=0;
+  return &ne;
+parseerror:
+  while (cur<last && *cur!='\n') cur++;
+  cur++;
+  goto again;
+error:
+  if (netmap!=(char*)-1) munmap(netmap,netlen);
+  if (netfd!=-1) close(netfd);
+  netmap=(char*)-1;
+  netfd=-1;
+  errno=ENOMEM;
+  return 0;
+}
+
+struct netent *getnetbyaddr(unsigned long net, int type) {
+  struct netent *s;
+  for (s=getnetent(); s; s=getnetent()) {
+    if (net==s->n_net && type==s->n_addrtype)
+      return s;
+  }
+  return 0;
+}
+
+void endnetent(void) {
+  if (netmap!=(char*)-1) munmap(netmap,netlen);
+  if (netfd!=-1) close(netfd);
+  netmap=(char*)-1;
+  netfd=-1;
+}
+
+void setnetent(int stayopen) {
+  (void)stayopen;
+  endnetent();
+}
+
+struct netent *getnetbyname(const char *name) {
+  struct netent *s;
+  setnetent(0);
+  for (s=getnetent(); s; s=getnetent()) {
+    char **tmp;
+#if 0
+    write(1,"found ",6);
+    write(1,s->s_name,strlen(s->s_name));
+    write(1,"/",1);
+    write(1,s->s_proto,strlen(s->s_proto));
+    write(1,"\n",1);
+    if (!strcmp(s->s_name,"ssh")) {
+      write(2,"ssh!\n",5);
+    }
+#endif
+    if (!strcmp(name,s->n_name))
+      return s;
+    tmp=s->n_aliases;
+    while (*tmp)
+      if (!strcmp(name,*tmp++)) return s;
+  }
+  return 0;
+}
+