ReactOS 0.4.16-dev-109-gf4cb10f
Classes | Macros | Typedefs | Functions | Variables
ip_addr.h File Reference
#include "lwip/opt.h"
#include "lwip/def.h"
Include dependency graph for ip_addr.h:

Go to the source code of this file.

Classes

struct  ip_addr
 
struct  ip_addr_packed
 
struct  ip_addr2
 

Macros

#define IP_ADDR_ANY   ((ip_addr_t *)&ip_addr_any)
 
#define IP_ADDR_BROADCAST   ((ip_addr_t *)&ip_addr_broadcast)
 
#define IPADDR_NONE   ((u32_t)0xffffffffUL)
 
#define IPADDR_LOOPBACK   ((u32_t)0x7f000001UL)
 
#define IPADDR_ANY   ((u32_t)0x00000000UL)
 
#define IPADDR_BROADCAST   ((u32_t)0xffffffffUL)
 
#define IP_CLASSA(a)   ((((u32_t)(a)) & 0x80000000UL) == 0)
 
#define IP_CLASSA_NET   0xff000000
 
#define IP_CLASSA_NSHIFT   24
 
#define IP_CLASSA_HOST   (0xffffffff & ~IP_CLASSA_NET)
 
#define IP_CLASSA_MAX   128
 
#define IP_CLASSB(a)   ((((u32_t)(a)) & 0xc0000000UL) == 0x80000000UL)
 
#define IP_CLASSB_NET   0xffff0000
 
#define IP_CLASSB_NSHIFT   16
 
#define IP_CLASSB_HOST   (0xffffffff & ~IP_CLASSB_NET)
 
#define IP_CLASSB_MAX   65536
 
#define IP_CLASSC(a)   ((((u32_t)(a)) & 0xe0000000UL) == 0xc0000000UL)
 
#define IP_CLASSC_NET   0xffffff00
 
#define IP_CLASSC_NSHIFT   8
 
#define IP_CLASSC_HOST   (0xffffffff & ~IP_CLASSC_NET)
 
#define IP_CLASSD(a)   (((u32_t)(a) & 0xf0000000UL) == 0xe0000000UL)
 
#define IP_CLASSD_NET   0xf0000000 /* These ones aren't really */
 
#define IP_CLASSD_NSHIFT   28 /* net and host fields, but */
 
#define IP_CLASSD_HOST   0x0fffffff /* routing needn't know. */
 
#define IP_MULTICAST(a)   IP_CLASSD(a)
 
#define IP_EXPERIMENTAL(a)   (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
 
#define IP_BADCLASS(a)   (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
 
#define IP_LOOPBACKNET   127 /* official! */
 
#define IP4_ADDR(ipaddr, a, b, c, d)
 
#define IPADDR2_COPY(dest, src)   SMEMCPY(dest, src, sizeof(ip_addr_t))
 
#define ip_addr_copy(dest, src)   ((dest).addr = (src).addr)
 
#define ip_addr_set(dest, src)
 
#define ip_addr_set_zero(ipaddr)   ((ipaddr)->addr = 0)
 
#define ip_addr_set_any(ipaddr)   ((ipaddr)->addr = IPADDR_ANY)
 
#define ip_addr_set_loopback(ipaddr)   ((ipaddr)->addr = PP_HTONL(IPADDR_LOOPBACK))
 
#define ip_addr_set_hton(dest, src)
 
#define ip4_addr_set_u32(dest_ipaddr, src_u32)   ((dest_ipaddr)->addr = (src_u32))
 
#define ip4_addr_get_u32(src_ipaddr)   ((src_ipaddr)->addr)
 
#define ip_addr_get_network(target, host, netmask)   ((target)->addr = ((host)->addr) & ((netmask)->addr))
 
#define ip_addr_netcmp(addr1, addr2, mask)
 
#define ip_addr_cmp(addr1, addr2)   ((addr1)->addr == (addr2)->addr)
 
#define ip_addr_isany(addr1)   ((addr1) == NULL || (addr1)->addr == IPADDR_ANY)
 
#define ip_addr_isbroadcast(ipaddr, netif)   ip4_addr_isbroadcast((ipaddr)->addr, (netif))
 
#define ip_addr_netmask_valid(netmask)   ip4_addr_netmask_valid((netmask)->addr)
 
#define ip_addr_ismulticast(addr1)   (((addr1)->addr & PP_HTONL(0xf0000000UL)) == PP_HTONL(0xe0000000UL))
 
#define ip_addr_islinklocal(addr1)   (((addr1)->addr & PP_HTONL(0xffff0000UL)) == PP_HTONL(0xa9fe0000UL))
 
#define ip_addr_debug_print(debug, ipaddr)
 
#define ip4_addr1(ipaddr)   (((u8_t*)(ipaddr))[0])
 
#define ip4_addr2(ipaddr)   (((u8_t*)(ipaddr))[1])
 
#define ip4_addr3(ipaddr)   (((u8_t*)(ipaddr))[2])
 
#define ip4_addr4(ipaddr)   (((u8_t*)(ipaddr))[3])
 
#define ip4_addr1_16(ipaddr)   ((u16_t)ip4_addr1(ipaddr))
 
#define ip4_addr2_16(ipaddr)   ((u16_t)ip4_addr2(ipaddr))
 
#define ip4_addr3_16(ipaddr)   ((u16_t)ip4_addr3(ipaddr))
 
#define ip4_addr4_16(ipaddr)   ((u16_t)ip4_addr4(ipaddr))
 
#define ip_ntoa(ipaddr)   ipaddr_ntoa(ipaddr)
 

Typedefs

typedef typedefPACK_STRUCT_END struct ip_addr ip_addr_t
 
typedef struct ip_addr_packed ip_addr_p_t
 

Functions

u8_t ip4_addr_isbroadcast (u32_t addr, const struct netif *netif)
 
u8_t ip4_addr_netmask_valid (u32_t netmask)
 
u32_t ipaddr_addr (const char *cp)
 
int ipaddr_aton (const char *cp, ip_addr_t *addr)
 
char * ipaddr_ntoa (const ip_addr_t *addr)
 
char * ipaddr_ntoa_r (const ip_addr_t *addr, char *buf, int buflen)
 

Variables

PACK_STRUCT_BEGIN struct ip_addr_packed PACK_STRUCT_STRUCT
 
const ip_addr_t ip_addr_any
 
const ip_addr_t ip_addr_broadcast
 

Macro Definition Documentation

◆ IP4_ADDR

#define IP4_ADDR (   ipaddr,
  a,
  b,
  c,
  d 
)
Value:
(ipaddr)->addr = ((u32_t)((a) & 0xff) << 24) | \
((u32_t)((b) & 0xff) << 16) | \
((u32_t)((c) & 0xff) << 8) | \
(u32_t)((d) & 0xff)
u32_t
unsigned long u32_t
Definition: cc.h:25
addr
GLenum const GLvoid * addr
Definition: glext.h:9621
d
#define d
Definition: ke_i.h:81
a
#define a
Definition: ke_i.h:78
c
#define c
Definition: ke_i.h:80
b
#define b
Definition: ke_i.h:79

Set an IP address given by the four byte-parts

Definition at line 139 of file ip_addr.h.

◆ ip4_addr1

#define ip4_addr1 (   ipaddr)    (((u8_t*)(ipaddr))[0])

Definition at line 220 of file ip_addr.h.

◆ ip4_addr1_16

#define ip4_addr1_16 (   ipaddr)    ((u16_t)ip4_addr1(ipaddr))

Definition at line 226 of file ip_addr.h.

◆ ip4_addr2

#define ip4_addr2 (   ipaddr)    (((u8_t*)(ipaddr))[1])

Definition at line 221 of file ip_addr.h.

◆ ip4_addr2_16

#define ip4_addr2_16 (   ipaddr)    ((u16_t)ip4_addr2(ipaddr))

Definition at line 227 of file ip_addr.h.

◆ ip4_addr3

#define ip4_addr3 (   ipaddr)    (((u8_t*)(ipaddr))[2])

Definition at line 222 of file ip_addr.h.

◆ ip4_addr3_16

#define ip4_addr3_16 (   ipaddr)    ((u16_t)ip4_addr3(ipaddr))

Definition at line 228 of file ip_addr.h.

◆ ip4_addr4

#define ip4_addr4 (   ipaddr)    (((u8_t*)(ipaddr))[3])

Definition at line 223 of file ip_addr.h.

◆ ip4_addr4_16

#define ip4_addr4_16 (   ipaddr)    ((u16_t)ip4_addr4(ipaddr))

Definition at line 229 of file ip_addr.h.

◆ ip4_addr_get_u32

#define ip4_addr_get_u32 (   src_ipaddr)    ((src_ipaddr)->addr)

IPv4 only: get the IP address as an u32_t

Definition at line 181 of file ip_addr.h.

◆ ip4_addr_set_u32

#define ip4_addr_set_u32 (   dest_ipaddr,
  src_u32 
)    ((dest_ipaddr)->addr = (src_u32))

IPv4 only: set the IP address given as an u32_t

Definition at line 179 of file ip_addr.h.

◆ IP_ADDR_ANY

#define IP_ADDR_ANY   ((ip_addr_t *)&ip_addr_any)

IP_ADDR_ can be used as a fixed IP address for the wildcard and the broadcast address

Definition at line 92 of file ip_addr.h.

◆ IP_ADDR_BROADCAST

#define IP_ADDR_BROADCAST   ((ip_addr_t *)&ip_addr_broadcast)

Definition at line 93 of file ip_addr.h.

◆ ip_addr_cmp

#define ip_addr_cmp (   addr1,
  addr2 
)    ((addr1)->addr == (addr2)->addr)

Definition at line 198 of file ip_addr.h.

◆ ip_addr_copy

#define ip_addr_copy (   dest,
  src 
)    ((dest).addr = (src).addr)

Copy IP address - faster than ip_addr_set: no NULL check

Definition at line 162 of file ip_addr.h.

◆ ip_addr_debug_print

#define ip_addr_debug_print (   debug,
  ipaddr 
)
Value:
LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \
ipaddr != NULL ? ip4_addr1_16(ipaddr) : 0, \
ipaddr != NULL ? ip4_addr2_16(ipaddr) : 0, \
ipaddr != NULL ? ip4_addr3_16(ipaddr) : 0, \
ipaddr != NULL ? ip4_addr4_16(ipaddr) : 0))
NULL
#define NULL
Definition: types.h:112
U16_F
#define U16_F
Definition: cc.h:36
LWIP_DEBUGF
#define LWIP_DEBUGF(debug, message)
Definition: debug.h:95
ip4_addr1_16
#define ip4_addr1_16(ipaddr)
Definition: ip_addr.h:226
ip4_addr2_16
#define ip4_addr2_16(ipaddr)
Definition: ip_addr.h:227
ip4_addr3_16
#define ip4_addr3_16(ipaddr)
Definition: ip_addr.h:228
ip4_addr4_16
#define ip4_addr4_16(ipaddr)
Definition: ip_addr.h:229
debug
#define debug(msg)
Definition: key_call.c:71

Definition at line 212 of file ip_addr.h.

◆ ip_addr_get_network

#define ip_addr_get_network (   target,
  host,
  netmask 
)    ((target)->addr = ((host)->addr) & ((netmask)->addr))

Get the network address by combining host address with netmask

Definition at line 184 of file ip_addr.h.

◆ ip_addr_isany

#define ip_addr_isany (   addr1)    ((addr1) == NULL || (addr1)->addr == IPADDR_ANY)

Definition at line 200 of file ip_addr.h.

◆ ip_addr_isbroadcast

#define ip_addr_isbroadcast (   ipaddr,
  netif 
)    ip4_addr_isbroadcast((ipaddr)->addr, (netif))

Definition at line 202 of file ip_addr.h.

◆ ip_addr_islinklocal

#define ip_addr_islinklocal (   addr1)    (((addr1)->addr & PP_HTONL(0xffff0000UL)) == PP_HTONL(0xa9fe0000UL))

Definition at line 210 of file ip_addr.h.

◆ ip_addr_ismulticast

#define ip_addr_ismulticast (   addr1)    (((addr1)->addr & PP_HTONL(0xf0000000UL)) == PP_HTONL(0xe0000000UL))

Definition at line 208 of file ip_addr.h.

◆ ip_addr_netcmp

#define ip_addr_netcmp (   addr1,
  addr2,
  mask 
)
Value:
(((addr1)->addr & \
(mask)->addr) == \
((addr2)->addr & \
(mask)->addr))
mask
GLenum GLint GLuint mask
Definition: glext.h:6028

Determine if two address are on the same network.

  • addr1 IP address 1
  • addr2 IP address 2
  • mask network identifier mask
    Returns
    !0 if the network identifiers of both address match

Definition at line 194 of file ip_addr.h.

◆ ip_addr_netmask_valid

#define ip_addr_netmask_valid (   netmask)    ip4_addr_netmask_valid((netmask)->addr)

Definition at line 205 of file ip_addr.h.

◆ ip_addr_set

#define ip_addr_set (   dest,
  src 
)
Value:
((dest)->addr = \
((src) == NULL ? 0 : \
(src)->addr))
src
GLenum src
Definition: glext.h:6340
dest
static char * dest
Definition: rtl.c:135

Safely copy one IP address to another (src may be NULL)

Definition at line 164 of file ip_addr.h.

◆ ip_addr_set_any

#define ip_addr_set_any (   ipaddr)    ((ipaddr)->addr = IPADDR_ANY)

Set address to IPADDR_ANY (no need for htonl())

Definition at line 170 of file ip_addr.h.

◆ ip_addr_set_hton

#define ip_addr_set_hton (   dest,
  src 
)
Value:
((dest)->addr = \
((src) == NULL ? 0:\
htonl((src)->addr)))

Safely copy one IP address to another and change byte order from host- to network-order.

Definition at line 175 of file ip_addr.h.

◆ ip_addr_set_loopback

#define ip_addr_set_loopback (   ipaddr)    ((ipaddr)->addr = PP_HTONL(IPADDR_LOOPBACK))

Set address to loopback address

Definition at line 172 of file ip_addr.h.

◆ ip_addr_set_zero

#define ip_addr_set_zero (   ipaddr)    ((ipaddr)->addr = 0)

Set complete address to zero

Definition at line 168 of file ip_addr.h.

◆ IP_BADCLASS

#define IP_BADCLASS (   a)    (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)

Definition at line 132 of file ip_addr.h.

◆ IP_CLASSA

#define IP_CLASSA (   a)    ((((u32_t)(a)) & 0x80000000UL) == 0)

Definition at line 108 of file ip_addr.h.

◆ IP_CLASSA_HOST

#define IP_CLASSA_HOST   (0xffffffff & ~IP_CLASSA_NET)

Definition at line 111 of file ip_addr.h.

◆ IP_CLASSA_MAX

#define IP_CLASSA_MAX   128

Definition at line 112 of file ip_addr.h.

◆ IP_CLASSA_NET

#define IP_CLASSA_NET   0xff000000

Definition at line 109 of file ip_addr.h.

◆ IP_CLASSA_NSHIFT

#define IP_CLASSA_NSHIFT   24

Definition at line 110 of file ip_addr.h.

◆ IP_CLASSB

#define IP_CLASSB (   a)    ((((u32_t)(a)) & 0xc0000000UL) == 0x80000000UL)

Definition at line 114 of file ip_addr.h.

◆ IP_CLASSB_HOST

#define IP_CLASSB_HOST   (0xffffffff & ~IP_CLASSB_NET)

Definition at line 117 of file ip_addr.h.

◆ IP_CLASSB_MAX

#define IP_CLASSB_MAX   65536

Definition at line 118 of file ip_addr.h.

◆ IP_CLASSB_NET

#define IP_CLASSB_NET   0xffff0000

Definition at line 115 of file ip_addr.h.

◆ IP_CLASSB_NSHIFT

#define IP_CLASSB_NSHIFT   16

Definition at line 116 of file ip_addr.h.

◆ IP_CLASSC

#define IP_CLASSC (   a)    ((((u32_t)(a)) & 0xe0000000UL) == 0xc0000000UL)

Definition at line 120 of file ip_addr.h.

◆ IP_CLASSC_HOST

#define IP_CLASSC_HOST   (0xffffffff & ~IP_CLASSC_NET)

Definition at line 123 of file ip_addr.h.

◆ IP_CLASSC_NET

#define IP_CLASSC_NET   0xffffff00

Definition at line 121 of file ip_addr.h.

◆ IP_CLASSC_NSHIFT

#define IP_CLASSC_NSHIFT   8

Definition at line 122 of file ip_addr.h.

◆ IP_CLASSD

#define IP_CLASSD (   a)    (((u32_t)(a) & 0xf0000000UL) == 0xe0000000UL)

Definition at line 125 of file ip_addr.h.

◆ IP_CLASSD_HOST

#define IP_CLASSD_HOST   0x0fffffff /* routing needn't know. */

Definition at line 128 of file ip_addr.h.

◆ IP_CLASSD_NET

#define IP_CLASSD_NET   0xf0000000 /* These ones aren't really */

Definition at line 126 of file ip_addr.h.

◆ IP_CLASSD_NSHIFT

#define IP_CLASSD_NSHIFT   28 /* net and host fields, but */

Definition at line 127 of file ip_addr.h.

◆ IP_EXPERIMENTAL

#define IP_EXPERIMENTAL (   a)    (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)

Definition at line 131 of file ip_addr.h.

◆ IP_LOOPBACKNET

#define IP_LOOPBACKNET   127 /* official! */

Definition at line 134 of file ip_addr.h.

◆ IP_MULTICAST

#define IP_MULTICAST (   a)    IP_CLASSD(a)

Definition at line 129 of file ip_addr.h.

◆ ip_ntoa

#define ip_ntoa (   ipaddr)    ipaddr_ntoa(ipaddr)

For backwards compatibility

Definition at line 232 of file ip_addr.h.

◆ IPADDR2_COPY

#define IPADDR2_COPY (   dest,
  src 
)    SMEMCPY(dest, src, sizeof(ip_addr_t))

MEMCPY-like copying of IP addresses where addresses are known to be 16-bit-aligned if the port is correctly configured (so a port could define this to copying 2 u16_t's) - no NULL-pointer-checking needed.

Definition at line 158 of file ip_addr.h.

◆ IPADDR_ANY

#define IPADDR_ANY   ((u32_t)0x00000000UL)

0.0.0.0

Definition at line 100 of file ip_addr.h.

◆ IPADDR_BROADCAST

#define IPADDR_BROADCAST   ((u32_t)0xffffffffUL)

255.255.255.255

Definition at line 102 of file ip_addr.h.

◆ IPADDR_LOOPBACK

#define IPADDR_LOOPBACK   ((u32_t)0x7f000001UL)

127.0.0.1

Definition at line 98 of file ip_addr.h.

◆ IPADDR_NONE

#define IPADDR_NONE   ((u32_t)0xffffffffUL)

255.255.255.255

Definition at line 96 of file ip_addr.h.

Typedef Documentation

◆ ip_addr_p_t

typedef struct ip_addr_packed ip_addr_p_t

Definition at line 65 of file ip_addr.h.

◆ ip_addr_t

typedef typedefPACK_STRUCT_END struct ip_addr ip_addr_t

ip_addr_t uses a struct for convenience only, so that the same defines can operate both on ip_addr_t as well as on ip_addr_p_t.

Definition at line 64 of file ip_addr.h.

Function Documentation

◆ ip4_addr_isbroadcast()

u8_t ip4_addr_isbroadcast ( u32_t  addr,
const struct netif *  netif 
)

Determine if an address is a broadcast address on a network interface

Parameters
addraddress to be checked
netifthe network interface against which the address is checked
Returns
returns non-zero if the address is a broadcast address

Definition at line 55 of file ip_addr.c.

56{
57 ip_addr_t ipaddr;
58 ip4_addr_set_u32(&ipaddr, addr);
59
60 /* all ones (broadcast) or all zeroes (old skool broadcast) */
61 if ((~addr == IPADDR_ANY) ||
62 (addr == IPADDR_ANY)) {
63 return 1;
64 /* no broadcast support on this network interface? */
65 } else if ((netif->flags & NETIF_FLAG_BROADCAST) == 0) {
66 /* the given address cannot be a broadcast address
67 * nor can we check against any broadcast addresses */
68 return 0;
69 /* address matches network interface address exactly? => no broadcast */
70 } else if (addr == ip4_addr_get_u32(&netif->ip_addr)) {
71 return 0;
72 /* on the same (sub) network... */
73 } else if (ip_addr_netcmp(&ipaddr, &(netif->ip_addr), &(netif->netmask))
74 /* ...and host identifier bits are all ones? =>... */
75 && ((addr & ~ip4_addr_get_u32(&netif->netmask)) ==
76 (IPADDR_BROADCAST & ~ip4_addr_get_u32(&netif->netmask)))) {
77 /* => network broadcast address */
78 return 1;
79 } else {
80 return 0;
81 }
82}
ip_addr_netcmp
#define ip_addr_netcmp(addr1, addr2, mask)
Definition: ip_addr.h:194
ip_addr_t
typedefPACK_STRUCT_END struct ip_addr ip_addr_t
Definition: ip_addr.h:64
IPADDR_BROADCAST
#define IPADDR_BROADCAST
Definition: ip_addr.h:102
ip4_addr_get_u32
#define ip4_addr_get_u32(src_ipaddr)
Definition: ip_addr.h:181
IPADDR_ANY
#define IPADDR_ANY
Definition: ip_addr.h:100
ip4_addr_set_u32
#define ip4_addr_set_u32(dest_ipaddr, src_u32)
Definition: ip_addr.h:179
NETIF_FLAG_BROADCAST
#define NETIF_FLAG_BROADCAST
Definition: netif.h:72
netif
Definition: netif.h:136
netif::flags
u8_t flags
Definition: netif.h:192
netif::netmask
ip_addr_t netmask
Definition: netif.h:142
netif::ip_addr
ip_addr_t ip_addr
Definition: netif.h:141

◆ ip4_addr_netmask_valid()

u8_t ip4_addr_netmask_valid ( u32_t  netmask)

Checks if a netmask is valid (starting with ones, then only zeros)

Parameters
netmaskthe IPv4 netmask to check (in network byte order!)
Returns
1 if the netmask is valid, 0 if it is not

Definition at line 90 of file ip_addr.c.

91{
92 u32_t mask;
93 u32_t nm_hostorder = lwip_htonl(netmask);
94
95 /* first, check for the first zero */
96 for (mask = 1UL << 31 ; mask != 0; mask >>= 1) {
97 if ((nm_hostorder & mask) == 0) {
98 break;
99 }
100 }
101 /* then check that there is no one */
102 for (; mask != 0; mask >>= 1) {
103 if ((nm_hostorder & mask) != 0) {
104 /* there is a one after the first zero -> invalid */
105 return 0;
106 }
107 }
108 /* no one after the first zero -> valid */
109 return 1;
110}
lwip_htonl
#define lwip_htonl(x)
Definition: def.h:86

◆ ipaddr_addr()

u32_t ipaddr_addr ( const char *  cp)

Ascii internet address interpretation routine. The value returned is in network order.

Parameters
cpIP address in ascii represenation (e.g. "127.0.0.1")
Returns
ip address in network order

Definition at line 130 of file ip_addr.c.

131{
132 ip_addr_t val;
133
134 if (ipaddr_aton(cp, &val)) {
135 return ip4_addr_get_u32(&val);
136 }
137 return (IPADDR_NONE);
138}
val
GLuint GLfloat * val
Definition: glext.h:7180
ipaddr_aton
int ipaddr_aton(const char *cp, ip_addr_t *addr)
Definition: ip_addr.c:152
IPADDR_NONE
#define IPADDR_NONE
Definition: ip_addr.h:96
cp
POINT cp
Definition: magnifier.c:59

◆ ipaddr_aton()

int ipaddr_aton ( const char *  cp,
ip_addr_t *  addr 
)

Check whether "cp" is a valid ascii representation of an Internet address and convert to a binary address. Returns 1 if the address is valid, 0 if not. This replaces inet_addr, the return value from which cannot distinguish between failure and a local broadcast address.

Parameters
cpIP address in ascii represenation (e.g. "127.0.0.1")
addrpointer to which to save the ip address in network order
Returns
1 if cp could be converted to addr, 0 on failure

Definition at line 152 of file ip_addr.c.

153{
154 u32_t val;
155 u8_t base;
156 char c;
157 u32_t parts[4];
158 u32_t *pp = parts;
159
160 c = *cp;
161 for (;;) {
162 /*
163 * Collect number up to ``.''.
164 * Values are specified as for C:
165 * 0x=hex, 0=octal, 1-9=decimal.
166 */
167 if (!isdigit(c))
168 return (0);
169 val = 0;
170 base = 10;
171 if (c == '0') {
172 c = *++cp;
173 if (c == 'x' || c == 'X') {
174 base = 16;
175 c = *++cp;
176 } else
177 base = 8;
178 }
179 for (;;) {
180 if (isdigit(c)) {
181 val = (val * base) + (int)(c - '0');
182 c = *++cp;
183 } else if (base == 16 && isxdigit(c)) {
184 val = (val << 4) | (int)(c + 10 - (islower(c) ? 'a' : 'A'));
185 c = *++cp;
186 } else
187 break;
188 }
189 if (c == '.') {
190 /*
191 * Internet format:
192 * a.b.c.d
193 * a.b.c (with c treated as 16 bits)
194 * a.b (with b treated as 24 bits)
195 */
196 if (pp >= parts + 3) {
197 return (0);
198 }
199 *pp++ = val;
200 c = *++cp;
201 } else
202 break;
203 }
204 /*
205 * Check for trailing characters.
206 */
207 if (c != '\0' && !isspace(c)) {
208 return (0);
209 }
210 /*
211 * Concoct the address according to
212 * the number of parts specified.
213 */
214 switch (pp - parts + 1) {
215
216 case 0:
217 return (0); /* initial nondigit */
218
219 case 1: /* a -- 32 bits */
220 break;
221
222 case 2: /* a.b -- 8.24 bits */
223 if (val > 0xffffffUL) {
224 return (0);
225 }
226 val |= parts[0] << 24;
227 break;
228
229 case 3: /* a.b.c -- 8.8.16 bits */
230 if (val > 0xffff) {
231 return (0);
232 }
233 val |= (parts[0] << 24) | (parts[1] << 16);
234 break;
235
236 case 4: /* a.b.c.d -- 8.8.8.8 bits */
237 if (val > 0xff) {
238 return (0);
239 }
240 val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
241 break;
242 default:
243 LWIP_ASSERT("unhandled", 0);
244 break;
245 }
246 if (addr) {
247 ip4_addr_set_u32(addr, htonl(val));
248 }
249 return (1);
250}
parts
std::map< E_STRING, PART_TEST > parts
Definition: LocaleTests.cpp:67
u8_t
unsigned char u8_t
Definition: cc.h:23
LWIP_ASSERT
#define LWIP_ASSERT(message, assertion)
Definition: debug.h:66
c
const GLubyte * c
Definition: glext.h:8905
isspace
#define isspace(c)
Definition: ip_addr.c:119
islower
#define islower(c)
Definition: ip_addr.c:118
isdigit
#define isdigit(c)
Definition: ip_addr.c:116
isxdigit
#define isxdigit(c)
Definition: ip_addr.c:117
htonl
#define htonl(x)
Definition: module.h:214

Referenced by ipaddr_addr().

◆ ipaddr_ntoa()

char * ipaddr_ntoa ( const ip_addr_t *  addr)

returns ptr to static buffer; not reentrant!

Convert numeric IP address into decimal dotted ASCII representation. returns ptr to static buffer; not reentrant!

Parameters
addrip address in network order to convert
Returns
pointer to a global static (!) buffer that holds the ASCII represenation of addr

Definition at line 261 of file ip_addr.c.

262{
263 static char str[16];
264 return ipaddr_ntoa_r(addr, str, 16);
265}
ipaddr_ntoa_r
char * ipaddr_ntoa_r(const ip_addr_t *addr, char *buf, int buflen)
Definition: ip_addr.c:276
str
const WCHAR * str
Definition: rpc_transport.c:2724

◆ ipaddr_ntoa_r()

char * ipaddr_ntoa_r ( const ip_addr_t *  addr,
char *  buf,
int  buflen 
)

Same as ipaddr_ntoa, but reentrant since a user-supplied buffer is used.

Parameters
addrip address in network order to convert
buftarget buffer where the string is stored
buflenlength of buf
Returns
either pointer to buf which now holds the ASCII representation of addr or NULL if buf was too small

Definition at line 276 of file ip_addr.c.

277{
278 u32_t s_addr;
279 char inv[3];
280 char *rp;
281 u8_t *ap;
282 u8_t rem;
283 u8_t n;
284 u8_t i;
285 int len = 0;
286
287 s_addr = ip4_addr_get_u32(addr);
288
289 rp = buf;
290 ap = (u8_t *)&s_addr;
291 for(n = 0; n < 4; n++) {
292 i = 0;
293 do {
294 rem = *ap % (u8_t)10;
295 *ap /= (u8_t)10;
296 inv[i++] = '0' + rem;
297 } while(*ap);
298 while(i--) {
299 if (len++ >= buflen) {
300 return NULL;
301 }
302 *rp++ = inv[i];
303 }
304 if (len++ >= buflen) {
305 return NULL;
306 }
307 *rp++ = '.';
308 ap++;
309 }
310 *--rp = 0;
311 return buf;
312}
s_addr
#define s_addr
Definition: tcpip.h:133
n
GLdouble n
Definition: glext.h:7729
buf
GLenum GLuint GLenum GLsizei const GLchar * buf
Definition: glext.h:7751
len
GLenum GLsizei len
Definition: glext.h:6722
i
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
ap
void int int ULONGLONG int va_list * ap
Definition: winesup.h:36

Referenced by ipaddr_ntoa().

Variable Documentation

◆ ip_addr_any

const ip_addr_t ip_addr_any
extern

Definition at line 44 of file ip_addr.c.

◆ ip_addr_broadcast

const ip_addr_t ip_addr_broadcast
extern

Definition at line 45 of file ip_addr.c.

◆ PACK_STRUCT_STRUCT

PACK_STRUCT_BEGIN struct ip_addr2 PACK_STRUCT_STRUCT