diff options
Diffstat (limited to 'src/net/ipv4.c')
| -rw-r--r-- | src/net/ipv4.c | 42 |
1 files changed, 37 insertions, 5 deletions
diff --git a/src/net/ipv4.c b/src/net/ipv4.c index f2337130..4dae20d1 100644 --- a/src/net/ipv4.c +++ b/src/net/ipv4.c @@ -589,10 +589,42 @@ static int ipv4_arp_check ( struct net_device *netdev, const void *net_addr ) { } /** + * Parse IPv4 address + * + * @v string IPv4 address string + * @ret in IPv4 address to fill in + * @ret ok IPv4 address is valid + * + * Note that this function returns nonzero iff the address is valid, + * to match the standard BSD API function of the same name. Unlike + * most other iPXE functions, a zero therefore indicates failure. + */ +int inet_aton ( const char *string, struct in_addr *in ) { + const char *separator = "..."; + uint8_t *byte = ( ( uint8_t * ) in ); + char *endp; + unsigned long value; + + while ( 1 ) { + value = strtoul ( string, &endp, 0 ); + if ( string == endp ) + return 0; + if ( value > 0xff ) + return 0; + *(byte++) = value; + if ( *endp != *separator ) + return 0; + if ( ! *(separator++) ) + return 1; + string = ( endp + 1 ); + } +} + +/** * Convert IPv4 address to dotted-quad notation * - * @v in IP address - * @ret string IP address in dotted-quad notation + * @v in IPv4 address + * @ret string IPv4 address in dotted-quad notation */ char * inet_ntoa ( struct in_addr in ) { static char buf[16]; /* "xxx.xxx.xxx.xxx" */ @@ -603,10 +635,10 @@ char * inet_ntoa ( struct in_addr in ) { } /** - * Transcribe IP address + * Transcribe IPv4 address * - * @v net_addr IP address - * @ret string IP address in dotted-quad notation + * @v net_addr IPv4 address + * @ret string IPv4 address in dotted-quad notation * */ static const char * ipv4_ntoa ( const void *net_addr ) { |