1 files changed, 83 insertions, 0 deletions
diff --git a/src/alias-wrapper.c b/src/alias-wrapper.c
new file mode 100644
index 000000000..d335e0c1c
--- /dev/null
+++ b/src/alias-wrapper.c
@@ -0,0 +1,83 @@
+#include <stdio.h>
+
+
+const int  LEGAL_PARENT_UID = 9001;  /* mailman's UID */
+const int  LEGAL_PARENT_GID = 6; /* mailman's GID */
+
+const char* SENDMAIL_CMD = "/usr/sbin/sendmail";
+const char* ALIAS_FILE   = "/etc/aliases";
+const char* WRAPPER      = "/home/mailman/mailman/mail/wrapper";
+
+/* 
+** is the parent process allowed to call us?
+*/
+int LegalCaller() 
+{
+    /* compare to our parent's uid */
+    if(LEGAL_PARENT_UID != getuid()) 
+      {
+	printf("GOT UID %d.\n", getuid());
+        return 0;
+      }
+    if(LEGAL_PARENT_GID != getgid())
+      {
+	printf("GOT GID %d.\n", getgid());
+        return 0;
+      }
+    return 1;
+}
+
+void AddListAliases(char *list)
+{
+  FILE *f;
+  int  err = 0;
+
+  f = fopen(ALIAS_FILE ,"a+");
+  if (f == NULL)
+    {
+      err = 1;
+      f = stderr;
+      fprintf(f, "\n\n***********ERROR!!!!***********\n");
+      fprintf(f, "Could not write to the /etc/aliases file.\n");
+      fprintf(f, "Please become root, add the lines below to that file,\n");
+      fprintf(f, "And then run the command %s -bi\n", SENDMAIL_CMD);
+    }
+
+  fprintf(f, "\n\n#-- %s -- mailing list aliases:\n", list);
+  fprintf(f, "%s: \t|\"%s post %s\"\n", list, WRAPPER, list);
+  fprintf(f, "%s-admin: \t|\"%s mailowner %s\"\n", list, WRAPPER, list);
+  fprintf(f, "%s-request: \t|\"%s mailcmd %s\"\n", list, WRAPPER, list);
+  fprintf(f, "# I think we don't want this one... it'll change the unix from line...\n");
+  fprintf(f, "#owner-%s: \t%s-admin\n", list, list);
+  fprintf(f, "#%s-owner: \t%s-admin\n", list, list);
+  fprintf(f, "\n");
+  fclose(f);
+
+  if (!err)
+    {
+      printf("Rebuilding alias database...\n");
+      execlp(SENDMAIL_CMD, SENDMAIL_CMD, "-bi");
+    }
+}
+
+void main(int argc, char **argv, char **env) 
+{
+  char  *command;
+  int   i;
+
+  if(argc != 2)
+    {
+      printf("Usage: %s [list-name]\n", argv[0]);
+      exit(0);
+    }
+  if(LegalCaller()) 
+    {
+      setuid(geteuid());
+      AddListAliases(argv[1]);
+    }
+  else
+    {
+      printf("Illegal caller!\n");
+    }
+}
+