Changeset 60 for trunk/src/get_conf.c

Timestamp:

10/25/07 07:23:46 (15 years ago)

Author:

andreu

Message:

new aggregation mode based on SNMP index and AS aggregation

Files:

• trunk/src/get_conf.c (modified) (3 diffs)

trunk/src/get_conf.c

@@ -66 +66 @@
 
   if (!(routerFile = fopen(filename, "r"))) {
-    fprintf (stderr, "error during %s opening\n", filename);
+    fprintf (stderr, "error during file \"%s\" opening\n", filename);
     exit(1);
   }
@@ -147 +147 @@
 
   if (!(prefixFile = fopen(filename, "r"))) {
-    fprintf (stderr, "error during %s opening\n", filename);
+    fprintf (stderr, "error during file \"%s\" opening\n", filename);
     exit(1);
   }
@@ -229 +229 @@
   }
 }
+
+/* 
+ * 
+ */
+int compASStr(a,b)
+{
+  static unsigned short a0;
+  static unsigned short b0;
+  sscanf((char *)a,"%hu\n",&a0);
+  sscanf((char *)b,"%hu\n",&b0);
+  if (a0 > b0) return(1);
+  if (a0 < b0) return(-1);
+  return(0);
+}
+
+/* 
+ * getAS()
+ *
+ * read AS file and sort the list
+ */
+unsigned short getAS(char *filename, struct AS *ASTabPtr)
+{
+  FILE *asFile;
+  char line[200];
+  unsigned short counter = 0;
+  unsigned short n0;
+  unsigned short buffer;
+  int i = 0;
+  char ASStrTab[MAX_AS][7];
+
+  if (!(asFile = fopen(filename, "r"))) {
+    fprintf (stderr, "error during file \"%s\" opening\n", filename);
+    exit(1);
+  }
+  for(i=0;i<MAX_AS;i++){
+    ASTabPtr[i].as = 0;
+    ASTabPtr[i].sampling = 0;
+  }
+  while (fgets(line, 7, asFile) != 0)
+    {
+      strcpy(ASStrTab[counter], line);
+      counter++;
+      if (counter > MAX_AS) {
+        fprintf(stderr, "bufferoverflow in getAS function (get_conf.c)\
+change the value of MAX_AS declaration and recompile, counter: %hu \n",
+                        counter);
+        exit(1);
+      }
+    }
+  qsort(ASStrTab, counter, 7, compASStr);
+  for(i=0;i<counter;i++)
+    {
+      sscanf(ASStrTab[i],"%hu\n",
+             &n0);
+      buffer = (unsigned short)n0;
+      ASTabPtr[i].as = *((unsigned short*)&buffer);
+      ASTabPtr[i].sampling = 0;
+    }
+  if( fclose(asFile) == 0) {
+    return (counter);
+  } else {
+    fprintf(stderr,"%s not closed, \n", filename);
+    exit(1);
+    return(counter);
+  }
+}
+