Password and group routines added by Ralf Corsepius <corsepiu@faw.uni-ulm.de>.

1 files changed, 119 insertions, 0 deletions

diff --git a/c/src/lib/libc/getgrent.c b/c/src/lib/libc/getgrent.c
new file mode 100644
index 0000000000..080187d178
--- /dev/null
+++ b/c/src/lib/libc/getgrent.c
@@ -0,0 +1,119 @@
+/*
+ *  $Id$
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <grp.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+static struct group gr_group;	/* password structure */
+static FILE *group_fp;
+
+static char groupname[8];
+static char password[1024];
+static char groups[1024];
+static char *gr_mem[16] = { } ;
+
+struct group *
+getgrnam (name)
+     const char *name;
+{
+  FILE *fp;
+  char buf[1024];
+
+  if ((fp = fopen ("/etc/group", "r")) == NULL)
+    {
+      return NULL;
+    }
+
+  while (fgets (buf, sizeof (buf), fp))
+    {
+      sscanf (buf, "%[^:]:%[^:]:%d:%s\n",
+	      groupname, password, &gr_group.gr_gid,
+	      groups);
+      gr_group.gr_name = groupname;
+      gr_group.gr_passwd = password;
+      gr_group.gr_mem = gr_mem ;
+      
+      if (!strcmp (groupname, name))
+	{
+	  fclose (fp);
+	  return &gr_group;
+	}
+    }
+  fclose (fp);
+  return NULL;
+}
+
+struct group *
+getgrgid (gid_t gid)
+{
+  FILE *fp;
+  char buf[1024];
+
+  if ((fp = fopen ("/etc/group", "r")) == NULL)
+    {
+      return NULL;
+    }
+
+  while (fgets (buf, sizeof (buf), fp))
+    {
+      sscanf (buf, "%[^:]:%[^:]:%d:%s\n",
+	      groupname, password, &gr_group.gr_gid,
+	      groups);
+      gr_group.gr_name = groupname;
+      gr_group.gr_passwd = password;
+      gr_group.gr_mem = gr_mem ;
+
+
+      if (gid == gr_group.gr_gid)
+	{
+	  fclose (fp);
+	  return &gr_group;
+	}
+    }
+  fclose (fp);
+  return NULL;
+}
+
+struct group *
+getgrent ()
+{
+  char buf[1024];
+
+  if (group_fp == NULL)
+    return NULL;
+
+  if (fgets (buf, sizeof (buf), group_fp) == NULL)
+    return NULL;
+
+  sscanf (buf, "%[^:]:%[^:]:%d:%s\n",
+	  groupname, password, &gr_group.gr_gid,
+	  groups);
+  gr_group.gr_name = groupname;
+  gr_group.gr_passwd = password;
+  gr_group.gr_mem = gr_mem ;
+
+  return &gr_group;
+}
+
+void
+setgrent ()
+{
+  if (group_fp != NULL)
+    fclose (group_fp);
+
+  group_fp = fopen ("/etc/group", "r");
+}
+
+void
+endgrent ()
+{
+  if (group_fp != NULL)
+    fclose (group_fp);
+}