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Polyfill IPv6 on non-Linux

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This commit is contained in:
Justine Tunney 2022-09-08 06:06:22 -07:00
parent b73e35c6fa
commit 0547eabcd6
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
10 changed files with 185 additions and 78 deletions
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16
libc/sock/sockaddr2bsd.c
View file

@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/sock/internal.h"
#include "libc/sock/struct/sockaddr.internal.h"
#include "libc/sock/struct/sockaddr6-bsd.internal.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/af.h"
#include "libc/sysv/errfuns.h"
@ -41,6 +42,21 @@ int sockaddr2bsd(const void *addr, uint32_t addrsize,
} else {
return einval();
}
} else if (((struct sockaddr *)addr)->sa_family == AF_INET6) {
if (addrsize >= sizeof(struct sockaddr_in6)) {
out_addr->sin6.sin6_len = 0;
out_addr->sin6.sin6_family = AF_INET6;
out_addr->sin6.sin6_port = ((struct sockaddr_in6 *)addr)->sin6_port;
out_addr->sin6.sin6_flowinfo =
((struct sockaddr_in6 *)addr)->sin6_flowinfo;
out_addr->sin6.sin6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr;
out_addr->sin6.sin6_scope_id =
((struct sockaddr_in6 *)addr)->sin6_scope_id;
*out_addrsize = sizeof(struct sockaddr_in6_bsd);
return 0;
} else {
return einval();
}
} else if (((struct sockaddr *)addr)->sa_family == AF_UNIX) {
famsize = sizeof(((struct sockaddr_un *)addr)->sun_family);
if (addrsize >= famsize &&

11
libc/sock/sockaddr2linux.c
View file

@ -19,6 +19,7 @@
#include "libc/macros.internal.h"
#include "libc/sock/internal.h"
#include "libc/sock/struct/sockaddr.internal.h"
#include "libc/sock/struct/sockaddr6-bsd.internal.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/af.h"
#include "libc/sysv/errfuns.h"
@ -42,6 +43,16 @@ void sockaddr2linux(const union sockaddr_storage_bsd *addr, uint32_t addrsize,
out_addr->sin.sin_addr = addr->sin.sin_addr;
*inout_addrsize = sizeof(struct sockaddr_in);
}
} else if (addr->sa.sa_family == AF_INET6) {
if (addrsize >= sizeof(struct sockaddr_in6_bsd) &&
size >= sizeof(struct sockaddr_in6)) {
out_addr->sin6.sin6_family = AF_INET6;
out_addr->sin6.sin6_port = addr->sin6.sin6_port;
out_addr->sin6.sin6_addr = addr->sin6.sin6_addr;
out_addr->sin6.sin6_flowinfo = addr->sin6.sin6_flowinfo;
out_addr->sin6.sin6_scope_id = addr->sin6.sin6_scope_id;
*inout_addrsize = sizeof(struct sockaddr_in6);
}
} else if (addr->sa.sa_family == AF_UNIX) {
if (addrsize >=
sizeof(addr->sun.sun_len) + sizeof(addr->sun.sun_family) &&

3
libc/sock/struct/sockaddr.internal.h
View file

@ -2,6 +2,7 @@
#define COSMOPOLITAN_LIBC_SOCK_STRUCT_SOCKADDR_INTERNAL_H_
#include "libc/mem/alloca.h"
#include "libc/sock/struct/sockaddr.h"
#include "libc/sock/struct/sockaddr6-bsd.internal.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -29,12 +30,14 @@ struct sockaddr_un_bsd {
union sockaddr_storage_bsd {
struct sockaddr_bsd sa;
struct sockaddr_in_bsd sin;
struct sockaddr_in6_bsd sin6;
struct sockaddr_un_bsd sun;
};
union sockaddr_storage_linux {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
struct sockaddr_un sun;
};

18
libc/sock/struct/sockaddr6-bsd.internal.h Normal file
View file

@ -0,0 +1,18 @@
#ifndef COSMOPOLITAN_LIBC_SOCK_STRUCT_SOCKADDR6_BSD_INTERNAL_H_
#define COSMOPOLITAN_LIBC_SOCK_STRUCT_SOCKADDR6_BSD_INTERNAL_H_
#include "libc/sock/struct/sockaddr6.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct sockaddr_in6_bsd {
uint8_t sin6_len;
uint8_t sin6_family;
uint16_t sin6_port;
uint32_t sin6_flowinfo;
struct in6_addr sin6_addr;
uint32_t sin6_scope_id;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_SOCK_STRUCT_SOCKADDR6_BSD_INTERNAL_H_ */