+ src/ipaddr.c

src/CMakeLists.txt

@@ -1,6 +1,6 @@
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
-set(SOURCES "main.c" "logfile.c" "log.c" "matches.c")
+set(SOURCES "main.c" "logfile.c" "log.c" "matches.c" "ipaddr.c")
 
 add_executable(f2b ${SOURCES})
 

src/ipaddr.c

@@ -0,0 +1,54 @@
+#include "common.h"
+#include "ipaddr.h"
+
+f2b_ipaddr_t *
+f2b_ipaddr_create(const char *addr, size_t matches) {
+  f2b_ipaddr_t *a = NULL;
+
+  assert(addr != NULL);
+  assert(matches != 0);
+
+  if ((a = calloc(1, sizeof(f2b_ipaddr_t))) != NULL) {
+    strncpy(a->text, addr, sizeof(a->text));
+    if (strchr(addr, ':') == NULL) {
+      a->type = AF_INET;
+      if (inet_pton(a->type, addr, &a->binary.v4) < 1)
+        goto cleanup;
+    } else {
+      a->type = AF_INET6;
+      if (inet_pton(a->type, addr, &a->binary.v6) < 1)
+        goto cleanup;
+    }
+    
+    if (f2b_matches_create(&a->matches, matches) == false)
+      goto cleanup;
+  }
+  return a;
+
+  cleanup:
+  FREE(a);
+  return NULL;
+}
+
+f2b_ipaddr_t *
+f2b_addrlist_append(f2b_ipaddr_t *list, f2b_ipaddr_t *ipaddr) {
+  assert(ipaddr != NULL);
+
+  ipaddr->next = list;
+  return ipaddr;
+}
+
+f2b_ipaddr_t *
+f2b_addrlist_lookup(f2b_ipaddr_t *list, const char *addr) {
+  assert(addr != NULL);
+
+  if (list == NULL)
+    return NULL;
+
+  for (f2b_ipaddr_t *a = list; a->next != NULL; a = a->next) {
+    if (strncmp(a->text, addr, sizeof(a->text)) == 0)
+      return a;
+  }
+
+  return NULL;
+}

src/ipaddr.h

@@ -5,10 +5,10 @@
 
 #include "matches.h"
 
-typedef struct {
+typedef struct f2b_ipaddr_t {
   struct f2b_ipaddr_t *next;
+  int type;
   char text[40]; /* 8 x "ffff" + 7 x ":" + '\0' */
-  int addr_type;
   union {
     struct in_addr  v4;
     struct in6_addr v6;
@@ -16,4 +16,8 @@ typedef struct {
   f2b_matches_t matches;
 } f2b_ipaddr_t;
 
+f2b_ipaddr_t * f2b_ipaddr_create(const char *addr, size_t max_matches);
+f2b_ipaddr_t * f2b_addrlist_append(f2b_ipaddr_t *list, f2b_ipaddr_t *ipaddr);
+f2b_ipaddr_t * f2b_addrlist_lookup(f2b_ipaddr_t *list, const char *addr);
+
 #endif /* F2B_IPADDR_H_ */