1 files changed, 89 insertions, 0 deletions
diff --git a/package/rtsp/src/netfilter_mime.h b/package/rtsp/src/netfilter_mime.h
new file mode 100644
index 000000000..7eeb18352
--- /dev/null
+++ b/package/rtsp/src/netfilter_mime.h
@@ -0,0 +1,89 @@
+/*
+ * MIME functions for netfilter modules.  This file provides implementations
+ * for basic MIME parsing.  MIME headers are used in many protocols, such as
+ * HTTP, RTSP, SIP, etc.
+ *
+ * gcc will warn for defined but unused functions, so we only include the
+ * functions requested.  The following macros are used:
+ *   NF_NEED_MIME_NEXTLINE      nf_mime_nextline()
+ */
+#ifndef _NETFILTER_MIME_H
+#define _NETFILTER_MIME_H
+
+/* Only include these functions for kernel code. */
+#ifdef __KERNEL__
+
+#include <linux/ctype.h>
+
+/*
+ * Given a buffer and length, advance to the next line and mark the current
+ * line.  If the current line is empty, *plinelen will be set to zero.  If
+ * not, it will be set to the actual line length (including CRLF).
+ *
+ * 'line' in this context means logical line (includes LWS continuations).
+ * Returns 1 on success, 0 on failure.
+ */
+#ifdef NF_NEED_MIME_NEXTLINE
+static int
+nf_mime_nextline(char* p, uint len, uint* poff, uint* plineoff, uint* plinelen)
+{
+    uint    off = *poff;
+    uint    physlen = 0;
+    int     is_first_line = 1;
+
+    if (off >= len)
+    {
+        return 0;
+    }
+
+    do
+    {
+        while (p[off] != '\n')
+        {
+            if (len-off <= 1)
+            {
+                return 0;
+            }
+
+            physlen++;
+            off++;
+        }
+
+        /* if we saw a crlf, physlen needs adjusted */
+        if (physlen > 0 && p[off] == '\n' && p[off-1] == '\r')
+        {
+            physlen--;
+        }
+
+        /* advance past the newline */
+        off++;
+
+        /* check for an empty line */
+        if (physlen == 0)
+        {
+            break;
+        }
+
+        /* check for colon on the first physical line */
+        if (is_first_line)
+        {
+            is_first_line = 0;
+            if (memchr(p+(*poff), ':', physlen) == NULL)
+            {
+                return 0;
+            }
+        }
+    }
+    while (p[off] == ' ' || p[off] == '\t');
+
+    *plineoff = *poff;
+    *plinelen = (physlen == 0) ? 0 : (off - *poff);
+    *poff = off;
+
+    return 1;
+}
+#endif /* NF_NEED_MIME_NEXTLINE */
+
+#endif /* __KERNEL__ */
+
+#endif /* _NETFILTER_MIME_H */