1 files changed, 174 insertions, 0 deletions
diff --git a/lib/command_match.c b/lib/command_match.c
new file mode 100644
index 0000000000..bcc28bdc5b
--- /dev/null
+++ b/lib/command_match.c
@@ -0,0 +1,174 @@
+#include <zebra.h>
+#include "memory.h"
+#include "command_match.h"
+
+enum match_type
+match_command (struct graph_node *start, enum filter_type filter, const char *input)
+{
+  // match input on DFA
+  return exact_match;
+}
+
+
+#define IPV4_ADDR_STR   "0123456789."
+#define IPV4_PREFIX_STR "0123456789./"
+
+enum match_type
+cmd_ipv4_match (const char *str)
+{
+  struct sockaddr_in sin_dummy;
+
+  if (str == NULL)
+    return partly_match;
+
+  if (strspn (str, IPV4_ADDR_STR) != strlen (str))
+    return no_match;
+
+  if (inet_pton(AF_INET, str, &sin_dummy.sin_addr) != 1)
+    return no_match;
+
+  return exact_match;
+}
+
+enum match_type
+cmd_ipv4_prefix_match (const char *str)
+{
+  struct sockaddr_in sin_dummy;
+  const char *delim = "/\0";
+  char *dupe, *prefix, *mask, *context, *endptr;
+  int nmask = -1;
+
+  if (str == NULL)
+    return partly_match;
+
+  if (strspn (str, IPV4_PREFIX_STR) != strlen (str))
+    return no_match;
+
+  /* tokenize to address + mask */
+  dupe = XMALLOC(MTYPE_TMP, strlen(str)+1);
+  strncpy(dupe, str, strlen(str)+1);
+  prefix = strtok_r(dupe, delim, &context);
+  mask   = strtok_r(NULL, delim, &context);
+
+  if (!mask)
+    return partly_match;
+
+  /* validate prefix */
+  if (inet_pton(AF_INET, prefix, &sin_dummy.sin_addr) != 1)
+    return no_match;
+
+  /* validate mask */
+  nmask = strtol (mask, &endptr, 10);
+  if (*endptr != '\0' || nmask < 0 || nmask > 32)
+    return no_match;
+
+  XFREE(MTYPE_TMP, dupe);
+
+  return exact_match;
+}
+
+#define IPV6_ADDR_STR   "0123456789abcdefABCDEF:."
+#define IPV6_PREFIX_STR "0123456789abcdefABCDEF:./"
+
+#ifdef HAVE_IPV6
+enum match_type
+cmd_ipv6_match (const char *str)
+{
+  struct sockaddr_in6 sin6_dummy;
+  int ret;
+
+  if (str == NULL)
+    return partly_match;
+
+  if (strspn (str, IPV6_ADDR_STR) != strlen (str))
+    return no_match;
+
+  ret = inet_pton(AF_INET6, str, &sin6_dummy.sin6_addr);
+
+  if (ret == 1)
+    return exact_match;
+
+  return no_match;
+}
+
+enum match_type
+cmd_ipv6_prefix_match (const char *str)
+{
+  struct sockaddr_in6 sin6_dummy;
+  const char *delim = "/\0";
+  char *dupe, *prefix, *mask, *context, *endptr;
+  int nmask = -1;
+
+  if (str == NULL)
+    return partly_match;
+
+  if (strspn (str, IPV6_PREFIX_STR) != strlen (str))
+    return no_match;
+
+  /* tokenize to address + mask */
+  dupe = XMALLOC(MTYPE_TMP, strlen(str)+1);
+  strncpy(dupe, str, strlen(str)+1);
+  prefix = strtok_r(dupe, delim, &context);
+  mask   = strtok_r(NULL, delim, &context);
+
+  if (!mask)
+    return partly_match;
+
+  /* validate prefix */
+  if (inet_pton(AF_INET6, prefix, &sin6_dummy.sin6_addr) != 1)
+    return no_match;
+
+  /* validate mask */
+  nmask = strtol (mask, &endptr, 10);
+  if (*endptr != '\0' || nmask < 0 || nmask > 128)
+    return no_match;
+
+  XFREE(MTYPE_TMP, dupe);
+
+  return exact_match;
+}
+#endif
+
+enum match_type
+cmd_range_match (struct graph_node *rangenode, const char *str)
+{
+  char *endptr = NULL;
+  signed long long val;
+
+  if (str == NULL)
+    return 1;
+
+  val = strtoll (str, &endptr, 10);
+  if (*endptr != '\0')
+    return 0;
+  val = llabs(val);
+
+  if (val < rangenode->min || val > rangenode->max)
+    return no_match;
+  else
+    return exact_match;
+}
+
+enum match_type
+cmd_word_match(struct graph_node *wordnode,
+               enum filter_type filter,
+               const char *word)
+{
+  if (filter == FILTER_RELAXED)
+    if (!word || !strlen(word))
+      return partly_match;
+
+  if (!word)
+    return no_match;
+
+  if (filter == FILTER_RELAXED && !strncmp(wordnode->text, word, strlen(word)))
+  {
+    if (!strcmp(wordnode->text, word))
+      return exact_match;
+    return partly_match;
+  }
+  if (filter == FILTER_STRICT && !strcmp(wordnode->text, word))
+    return exact_match;
+
+  return no_match;
+}