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https://github.com/jart/cosmopolitan.git
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1a96de6eda
Locally modified to get nameservers from Windows Registry when `\etc\resolv.conf` isn't defined.
72 lines
2.9 KiB
C
72 lines
2.9 KiB
C
#ifndef COSMOPOLITAN_LIBC_SOCK_IN_H_
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#define COSMOPOLITAN_LIBC_SOCK_IN_H_
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#include "libc/sock/sock.h"
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#define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
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#define IN_CLASSA_NET 0xff000000
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#define IN_CLASSA_NSHIFT 24
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#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
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#define IN_CLASSA_MAX 128
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#define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
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#define IN_CLASSB_NET 0xffff0000
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#define IN_CLASSB_NSHIFT 16
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#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
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#define IN_CLASSB_MAX 65536
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#define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
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#define IN_CLASSC_NET 0xffffff00
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#define IN_CLASSC_NSHIFT 8
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#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
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#define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
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#define IN_MULTICAST(a) IN_CLASSD(a)
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#define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
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#define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
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#define IN6_IS_ADDR_UNSPECIFIED(a) \
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(((uint32_t *)(a))[0] == 0 && ((uint32_t *)(a))[1] == 0 && \
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((uint32_t *)(a))[2] == 0 && ((uint32_t *)(a))[3] == 0)
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#define IN6_IS_ADDR_LOOPBACK(a) \
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(((uint32_t *)(a))[0] == 0 && ((uint32_t *)(a))[1] == 0 && \
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((uint32_t *)(a))[2] == 0 && ((uint8_t *)(a))[12] == 0 && \
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((uint8_t *)(a))[13] == 0 && ((uint8_t *)(a))[14] == 0 && \
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((uint8_t *)(a))[15] == 1)
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#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *)(a))[0] == 0xff)
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#define IN6_IS_ADDR_LINKLOCAL(a) \
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((((uint8_t *)(a))[0]) == 0xfe && (((uint8_t *)(a))[1] & 0xc0) == 0x80)
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#define IN6_IS_ADDR_SITELOCAL(a) \
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((((uint8_t *)(a))[0]) == 0xfe && (((uint8_t *)(a))[1] & 0xc0) == 0xc0)
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#define IN6_IS_ADDR_V4MAPPED(a) \
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(((uint32_t *)(a))[0] == 0 && ((uint32_t *)(a))[1] == 0 && \
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((uint8_t *)(a))[8] == 0 && ((uint8_t *)(a))[9] == 0 && \
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((uint8_t *)(a))[10] == 0xff && ((uint8_t *)(a))[11] == 0xff)
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#define IN6_IS_ADDR_V4COMPAT(a) \
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(((uint32_t *)(a))[0] == 0 && ((uint32_t *)(a))[1] == 0 && \
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((uint32_t *)(a))[2] == 0 && ((uint8_t *)(a))[15] > 1)
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#define IN6_IS_ADDR_MC_NODELOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *)(a))[1] & 0xf) == 0x1))
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#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *)(a))[1] & 0xf) == 0x2))
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#define IN6_IS_ADDR_MC_SITELOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *)(a))[1] & 0xf) == 0x5))
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#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *)(a))[1] & 0xf) == 0x8))
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#define IN6_IS_ADDR_MC_GLOBAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *)(a))[1] & 0xf) == 0xe))
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#define __ARE_4_EQUAL(a, b) \
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(!((0 [a] - 0 [b]) | (1 [a] - 1 [b]) | (2 [a] - 2 [b]) | (3 [a] - 3 [b])))
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#define IN6_ARE_ADDR_EQUAL(a, b) \
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__ARE_4_EQUAL((const uint32_t *)(a), (const uint32_t *)(b))
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#endif /* COSMOPOLITAN_LIBC_SOCK_IN_H_ */
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