From 205b82f6ba0018f2b7620a0558bfd78723fc2a2d Mon Sep 17 00:00:00 2001
From: Luca Deri <deri@ntop.org>
Date: Mon, 1 May 2017 21:20:43 +0200
Subject: Added new API calls - ndpi_add_string_value_to_automa -
 ndpi_match_string_id

---
 src/include/ndpi_api.h | 24 ++++++++++++++++++++++++
 src/lib/ndpi_main.c    | 27 +++++++++++++++++++++++++--
 2 files changed, 49 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/include/ndpi_api.h b/src/include/ndpi_api.h
index bcc5fe51f..b2c6b6952 100644
--- a/src/include/ndpi_api.h
+++ b/src/include/ndpi_api.h
@@ -566,6 +566,18 @@ extern "C" {
    *
    * @par     The automata initialized with ndpi_init_automa();
    * @par     The (sub)string to search
+   * @par     The number associated with this string
+   * @return  0 in case of no error, or -1 if an error occurred.
+   * 
+   */
+  int ndpi_add_string_value_to_automa(void *_automa, char *str, unsigned long num);
+
+
+  /**
+   * Add a string to match to an automata. Same as ndpi_add_string_value_to_automa() with num set to 1
+   *
+   * @par     The automata initialized with ndpi_init_automa();
+   * @par     The (sub)string to search
    * @return  0 in case of no error, or -1 if an error occurred.
    * 
    */
@@ -592,6 +604,18 @@ extern "C" {
   int ndpi_match_string(void *_automa, char *string_to_match);
 
 
+  /**
+   * Add a string to match to an automata
+   *
+   * @par     The automata initialized with ndpi_init_automa();
+   * @par     The (sub)string to search
+   * @par     The id associated with the matched string or 0 id not found.
+   * @return  0 in case of match, or -1 if no match, or -2 if an error occurred.
+   * 
+   */
+  int ndpi_match_string_id(void *_automa, char *string_to_match, unsigned long *id);
+
+
   /* Utility functions to set ndpi malloc/free/print wrappers */
   void set_ndpi_malloc(void* (*__ndpi_malloc)(size_t size));
   void set_ndpi_free(void  (*__ndpi_free)(void *ptr));
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 0c5c0f0ff..8783ef6cd 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -1858,18 +1858,22 @@ void* ndpi_init_automa(void) {
   return(ac_automata_init(ac_match_handler));
 }
 
-int ndpi_add_string_to_automa(void *_automa, char *str) {
+int ndpi_add_string_value_to_automa(void *_automa, char *str, unsigned long num) {
   AC_PATTERN_t ac_pattern;
   AC_AUTOMATA_t *automa = (AC_AUTOMATA_t*)_automa;
 
   if(automa == NULL) return(-1);
 
   ac_pattern.astring = str;
-  ac_pattern.rep.number = 1; /* Dummy */
+  ac_pattern.rep.number = num;
   ac_pattern.length = strlen(ac_pattern.astring);
   return(ac_automata_add(automa, &ac_pattern) == ACERR_SUCCESS ? 0 : -1);
 }
 
+int ndpi_add_string_to_automa(void *_automa, char *str) {
+  return(ndpi_add_string_value_to_automa(_automa, str, 1));
+}
+
 void ndpi_free_automa(void *_automa)     { ac_automata_release((AC_AUTOMATA_t*)_automa);  }
 void ndpi_finalize_automa(void *_automa) { ac_automata_finalize((AC_AUTOMATA_t*)_automa); }
 
@@ -1892,6 +1896,25 @@ int ndpi_match_string(void *_automa, char *string_to_match) {
   return(matching_protocol_id > 0 ? 0 : -1);
 }
 
+/* ****************************************************** */
+
+int ndpi_match_string_id(void *_automa, char *string_to_match, unsigned long *id) {
+  AC_TEXT_t ac_input_text;
+  AC_AUTOMATA_t *automa = (AC_AUTOMATA_t*)_automa;
+
+  *id = 0;
+  if((automa == NULL)
+     || (string_to_match == NULL)
+     || (string_to_match[0] == '\0'))
+    return(-2);
+
+  ac_input_text.astring = string_to_match, ac_input_text.length = strlen(string_to_match);
+  ac_automata_search(automa, &ac_input_text, (void*)&id);
+  ac_automata_reset(automa);
+
+  return(*id > 0 ? *id : -1);
+}
+
 /* *********************************************** */
 
 static void free_ptree_data(void *data) { ; }
-- 
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