1 files changed, 133 insertions, 0 deletions
diff --git a/package/rtsp/src/netfilter_helpers.h b/package/rtsp/src/netfilter_helpers.h
new file mode 100644
index 000000000..903f37455
--- /dev/null
+++ b/package/rtsp/src/netfilter_helpers.h
@@ -0,0 +1,133 @@
+/*
+ * Helpers for netfiler modules.  This file provides implementations for basic
+ * functions such as strncasecmp(), etc.
+ *
+ * gcc will warn for defined but unused functions, so we only include the
+ * functions requested.  The following macros are used:
+ *   NF_NEED_STRNCASECMP        nf_strncasecmp()
+ *   NF_NEED_STRTOU16           nf_strtou16()
+ *   NF_NEED_STRTOU32           nf_strtou32()
+ */
+#ifndef _NETFILTER_HELPERS_H
+#define _NETFILTER_HELPERS_H
+
+/* Only include these functions for kernel code. */
+#ifdef __KERNEL__
+
+#include <linux/ctype.h>
+#define iseol(c) ( (c) == '\r' || (c) == '\n' )
+
+/*
+ * The standard strncasecmp()
+ */
+#ifdef NF_NEED_STRNCASECMP
+static int
+nf_strncasecmp(const char* s1, const char* s2, u_int32_t len)
+{
+    if (s1 == NULL || s2 == NULL)
+    {
+        if (s1 == NULL && s2 == NULL)
+        {
+            return 0;
+        }
+        return (s1 == NULL) ? -1 : 1;
+    }
+    while (len > 0 && tolower(*s1) == tolower(*s2))
+    {
+        len--;
+        s1++;
+        s2++;
+    }
+    return ( (len == 0) ? 0 : (tolower(*s1) - tolower(*s2)) );
+}
+#endif /* NF_NEED_STRNCASECMP */
+
+/*
+ * Parse a string containing a 16-bit unsigned integer.
+ * Returns the number of chars used, or zero if no number is found.
+ */
+#ifdef NF_NEED_STRTOU16
+static int
+nf_strtou16(const char* pbuf, u_int16_t* pval)
+{
+    int n = 0;
+
+    *pval = 0;
+    while (isdigit(pbuf[n]))
+    {
+        *pval = (*pval * 10) + (pbuf[n] - '0');
+        n++;
+    }
+
+    return n;
+}
+#endif /* NF_NEED_STRTOU16 */
+
+/*
+ * Parse a string containing a 32-bit unsigned integer.
+ * Returns the number of chars used, or zero if no number is found.
+ */
+#ifdef NF_NEED_STRTOU32
+static int
+nf_strtou32(const char* pbuf, u_int32_t* pval)
+{
+    int n = 0;
+
+    *pval = 0;
+    while (pbuf[n] >= '0' && pbuf[n] <= '9')
+    {
+        *pval = (*pval * 10) + (pbuf[n] - '0');
+        n++;
+    }
+
+    return n;
+}
+#endif /* NF_NEED_STRTOU32 */
+
+/*
+ * Given a buffer and length, advance to the next line and mark the current
+ * line.
+ */
+#ifdef NF_NEED_NEXTLINE
+static int
+nf_nextline(char* p, uint len, uint* poff, uint* plineoff, uint* plinelen)
+{
+    uint    off = *poff;
+    uint    physlen = 0;
+
+    if (off >= len)
+    {
+        return 0;
+    }
+
+    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++;
+
+    *plineoff = *poff;
+    *plinelen = physlen;
+    *poff = off;
+
+    return 1;
+}
+#endif /* NF_NEED_NEXTLINE */
+
+#endif /* __KERNEL__ */
+
+#endif /* _NETFILTER_HELPERS_H */