X-Git-Url: https://git.distorted.org.uk/~mdw/ezmlm/blobdiff_plain/5b62e993b0af39700031c2875d7f6654e6a02850..f8beb284087c279acfb30506f5bb32baa4949b44:/sub_std/checktag.c

diff --git a/sub_std/checktag.c b/sub_std/checktag.c
new file mode 100644
index 0000000..f84350a
--- /dev/null
+++ b/sub_std/checktag.c
@@ -0,0 +1,46 @@
+/*$Id: checktag.c,v 1.4 1999/10/12 23:38:36 lindberg Exp $*/
+/*$Name: ezmlm-idx-040 $*/
+#include "stralloc.h"
+#include "scan.h"
+#include "fmt.h"
+#include "cookie.h"
+#include "makehash.h"
+#include "strerr.h"
+#include "errtxt.h"
+#include "subscribe.h"
+
+static stralloc key = {0};
+static stralloc line = {0};
+static stralloc quoted = {0};
+static char strnum[FMT_ULONG];
+static char newcookie[COOKIE];
+
+char *checktag (dir,num,listno,action,seed,hash)
+/* reads dir/sql. If not present, checks that the hash of seed matches */
+/* hash and returns success (NULL). If not match returns "". If error, */
+/* returns error string */
+
+char *dir;				/* the db base dir */
+unsigned long num;			/* message number */
+unsigned long listno;			/* bottom of range => slave */
+char *action;
+char *seed;				/* cookie base */
+char *hash;				/* cookie */
+{
+
+    if (!seed) return (char *) 0;		/* no data - accept */
+
+    strnum[fmt_ulong(strnum,num)] = '\0';	/* message nr ->string*/
+
+    switch(slurp("key",&key,32)) {
+      case -1:
+	return ERR_READ_KEY;
+      case 0:
+	return ERR_NOEXIST_KEY;
+    }
+
+    cookie(newcookie,key.s,key.len,strnum,seed,action);
+    if (byte_diff(hash,COOKIE,newcookie)) return "";
+    else return (char *) 0;
+
+}