From f15aa3a552022743398a652165d76bf912c715e5 Mon Sep 17 00:00:00 2001
From: Guillaume Cottenceau <gc@mandriva.com>
Date: Mon, 14 May 2001 13:47:49 +0000
Subject: Initial revision

---
 mdk-stage1/dietlibc/libugly/getprotoent.c | 130 ++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 mdk-stage1/dietlibc/libugly/getprotoent.c

(limited to 'mdk-stage1/dietlibc/libugly/getprotoent.c')

diff --git a/mdk-stage1/dietlibc/libugly/getprotoent.c b/mdk-stage1/dietlibc/libugly/getprotoent.c
new file mode 100644
index 000000000..a648e2307
--- /dev/null
+++ b/mdk-stage1/dietlibc/libugly/getprotoent.c
@@ -0,0 +1,130 @@
+#include <unistd.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <ctype.h>
+
+static int protofd=-1;
+static char* protomap;
+static unsigned int protolen;
+
+static char* aliases[10];
+
+static char *cur;
+
+/* ip	0	IP		# internet protocol, pseudo protocol number */
+struct protoent *getprotoent(void) {
+  static struct protoent pe;
+  char *last;
+  int aliasidx;
+  if (protofd<0) {
+    protofd=open(_PATH_SERVICES,O_RDONLY);
+    if (protofd<0) return 0;
+    protolen=lseek(protofd,0,SEEK_END);
+    protomap=mmap(0,protolen,PROT_READ|PROT_WRITE,MAP_PRIVATE,protofd,0);
+    if ((long)protomap==(-1)) goto error;
+    cur=protomap;
+  }
+  last=protomap+protolen;
+again:
+  pe.p_name=0;
+  pe.p_aliases=aliases; aliases[0]=0;
+  pe.p_proto=0;
+  if (cur>=last) return 0;
+  if (*cur=='#' || *cur=='\n') goto parseerror;
+  /* first, the primary name */
+  if (!isalpha(*cur)) goto parseerror;
+  pe.p_name=cur;
+  pe.p_aliases=aliases;
+  while (cur<last && isalnum(*cur)) cur++;
+  if (cur>=last) return 0;
+  if (*cur=='\n') goto parseerror;
+  *cur=0; cur++;
+  /* second, the protocol number */
+  while (cur<last && isblank(*cur)) cur++;
+  while (cur<last && isdigit(*cur)) {
+    pe.p_proto=pe.p_proto*10+*cur-'0';
+    cur++;
+  }
+/*  pe.p_proto=htons(pe.s_proto); */
+  if (cur>=last) return 0;
+  if (*cur=='\n') { *cur++=0; return &pe; }
+  *cur=0; cur++;
+  /* 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 &pe;
+parseerror:
+  while (cur<last && *cur!='\n') cur++;
+  cur++;
+  goto again;
+error:
+  if (protomap!=(char*)-1) munmap(protomap,protolen);
+  if (protofd!=-1) close(protofd);
+  protomap=(char*)-1;
+  protofd=-1;
+  errno=ENOMEM;
+  return 0;
+}
+
+void setprotoent(int stayopen) {
+  cur=protomap;
+}
+
+struct protoent *getprotobyname(const char *name) {
+  struct protoent *s;
+  setprotoent(0);
+  for (s=getprotoent(); s; s=getprotoent()) {
+    char **tmp;
+#if 0
+    write(1,"found ",6);
+    write(1,s->p_name,strlen(s->p_name));
+    write(1,"/",1);
+    write(1,s->p_proto,strlen(s->p_proto));
+    write(1,"\n",1);
+    if (!strcmp(name,"auth")) {
+      tmp=s->p_aliases;
+      write(1,"  aka ",5);
+      while (*tmp) {
+	write(1,*tmp,strlen(*tmp));
+	write(1,", ",2);
+	++tmp;
+      }
+      write(1,"\n",1);
+    }
+#endif
+    if (!strcmp(name,s->p_name))
+      return s;
+    tmp=s->p_aliases;
+    while (*tmp)
+      if (!strcmp(name,*tmp++)) return s;
+  }
+  return 0;
+}
+
+struct protoent *getprotobynumber(int proto) {
+  struct protoent *s;
+  for (s=getprotoent(); s; s=getprotoent()) {
+    if (proto==s->p_proto)
+      return s;
+  }
+  return 0;
+}
+
+void endprotoent(void) {
+  if (protomap!=(char*)-1) munmap(protomap,protolen);
+  if (protofd!=-1) close(protofd);
+  protomap=(char*)-1;
+  protofd=-1;
+}
+
-- 
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