diff options
Diffstat (limited to 'src/ipaddrcheck_functions.c')
| -rw-r--r-- | src/ipaddrcheck_functions.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/ipaddrcheck_functions.c b/src/ipaddrcheck_functions.c index 82d01f9..4a2d130 100644 --- a/src/ipaddrcheck_functions.c +++ b/src/ipaddrcheck_functions.c @@ -36,6 +36,28 @@ * the format was. */ + +/* Does it contain double semicolons? This is not allowed in IPv6 addresses */ +int duplicate_double_semicolons(char* address_str) { + int offsets[1]; + pcre *re; + int rc; + const char *error; + int erroffset; + + re = pcre_compile(".*(::).*\\1", 0, &error, &erroffset, NULL); + rc = pcre_exec(re, NULL, address_str, strlen(address_str), 0, 0, offsets, 1); + + if( rc >= 0) + { + return(1); + } + else + { + return(0); + } +} + /* Does it look like IPv4 CIDR (e.g. 192.0.2.1/24)? */ int is_ipv4_cidr(char* address_str) { |