filter: squid interfacing code, basic minimum configuration

Implement squid redirect protocol. It implements the "concurrent"
version even though the algorithm is non-blocking. Doing this can
reduce the amount of read system calls on busy system.

Minimum command line based configuration for banning specific
categories and specifying the redirect site. Will probably have
to add some sort of config file system later.

1 files changed, 16 insertions, 0 deletions

diff --git a/blob.c b/blob.c
index 0c28877..5a3b226 100644
--- a/blob.c
+++ b/blob.c
@@ -189,6 +189,22 @@ unsigned int blob_pull_uint(blob_t *b, int radix)
 	return val;
 }
 
+blob_t blob_pull_spn(blob_t *b, const blob_t reject)
+{
+	blob_t t = *b;
+	int i;
+
+	for (i = 0; i < t.len; i++) {
+		if (memchr(reject.ptr, t.ptr[i], reject.len) == NULL) {
+			*b = BLOB_PTR_LEN(t.ptr + i, t.len - i);
+			return BLOB_PTR_LEN(t.ptr, i);
+		}
+	}
+
+	*b = BLOB_NULL;
+	return t;
+}
+
 blob_t blob_pull_cspn(blob_t *b, const blob_t reject)
 {
 	blob_t t = *b;