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-rw-r--r--src/include/ndpi_utils.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/include/ndpi_utils.h b/src/include/ndpi_utils.h
index b8176cc02..983aae283 100644
--- a/src/include/ndpi_utils.h
+++ b/src/include/ndpi_utils.h
@@ -16,4 +16,17 @@ extern void printRawData(const uint8_t *ptr, size_t len);
//extern uint8_t add_segment_to_buffer( struct ndpi_flow_struct *flow, struct ndpi_tcphdr const * tcph, uint32_t waited);
//extern uint8_t check_for_sequence( struct ndpi_flow_struct *flow, struct ndpi_tcphdr const * tcph);
+/* **************************************** */
+
+/* Can't call libc functions from kernel space, define some stub instead */
+
+#define ndpi_isalpha(ch) (((ch) >= 'a' && (ch) <= 'z') || ((ch) >= 'A' && (ch) <= 'Z'))
+#define ndpi_isdigit(ch) ((ch) >= '0' && (ch) <= '9')
+#define ndpi_isspace(ch) (((ch) >= '\t' && (ch) <= '\r') || ((ch) == ' '))
+#define ndpi_isprint(ch) ((ch) >= 0x20 && (ch) <= 0x7e)
+#define ndpi_ispunct(ch) (((ch) >= '!' && (ch) <= '/') || \
+ ((ch) >= ':' && (ch) <= '@') || \
+ ((ch) >= '[' && (ch) <= '`') || \
+ ((ch) >= '{' && (ch) <= '~'))
+
#endif