make headers work in C++

add two more variable length integer encoding functions

array.h

@@ -5,6 +5,10 @@
 #include <stddef.h>
 #include "uint64.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct {
   char* p;
   int64 allocated;	/* in bytes */
@@ -40,4 +44,8 @@ void array_chop(array* x,uint64 membersize,uint64 members);
 #define array_failed(x) (array_bytes(x)==-1)
 #define array_unallocated(x) (array_bytes(x)==0)
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

buffer.h

@@ -7,6 +7,10 @@
 /* for ssize_t: */
 #include <sys/types.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct buffer {
   char *x;		/* actual buffer space */
   size_t p;		/* current position */
@@ -139,4 +143,8 @@ void buffer_fromsa(buffer* b,stralloc* sa);	/* read from sa */
 int buffer_tosa(buffer*b,stralloc* sa);		/* write to sa, auto-growing it */
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

byte.h

@@ -5,6 +5,10 @@
 /* for size_t: */
 #include <stddef.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef __pure__
 #define __pure__
 #endif
@@ -37,4 +41,8 @@ void byte_zero(void* out, size_t len);
 
 #define byte_equal(s,n,t) (!byte_diff((s),(n),(t)))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

case.h

@@ -4,6 +4,10 @@
 
 #include <stddef.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* turn upper case letters to lower case letters, ASCIIZ */
 void case_lowers(char *s);
 /* turn upper case letters to lower case letters, binary */
@@ -20,4 +24,8 @@ int case_starts(const char *,const char *);
 #define case_equals(s,t) (!case_diffs((s),(t)))
 #define case_equalb(s,n,t) (!case_diffb((s),(n),(t)))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

cdb.h

@@ -5,6 +5,10 @@
 #include "uint32.h"
 #include "uint64.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define CDB_HASHSTART 5381
 extern uint32 cdb_hashadd(uint32 h,unsigned char c);
 extern uint32 cdb_hash(const unsigned char *buf,unsigned long int len);
@@ -41,4 +45,8 @@ extern int cdb_successor(struct cdb *c,const unsigned char *,unsigned long int);
 #define cdb_keypos(c) ((c)->kpos)
 #define cdb_keylen(c) ((c)->dpos-(c)->kpos)
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

cdb_make.h

@@ -6,6 +6,10 @@
 #include "uint64.h"
 #include "uint32.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define CDB_HPLIST 1000
 
 struct cdb_hp { uint32 h; uint32 p; } ;
@@ -36,4 +40,8 @@ extern int cdb_make_addend(struct cdb_make *,unsigned long int,unsigned long int
 extern int cdb_make_add(struct cdb_make *,const unsigned char *,unsigned long int,const unsigned char *,unsigned long int);
 extern int cdb_make_finish(struct cdb_make *);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

dns.h

@@ -6,6 +6,10 @@
 #include "iopause.h"
 #include "taia.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define DNS_C_IN "\0\1"
 #define DNS_C_ANY "\0\377"
 
@@ -92,4 +96,8 @@ void dns_name6_domain(char *,const char *);
 #define DNS_NAME6_DOMAIN (4*16+11)
 int dns_name6(stralloc *,const char *);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

errmsg.h

@@ -5,6 +5,10 @@
 /* for exit(): */
 #include <stdlib.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* These use file descriptor 2, not buffer_2!
  * Call buffer_flush(buffer_2) before calling these! */
 
@@ -27,4 +31,8 @@ void errmsg_infosys(const char* message, ...);
 #define msg(...) errmsg_info(__VA_ARGS__,(char*)0);
 #define msgsys(...) errmsg_infosys(__VA_ARGS__,(char*)0);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

fmt.h

@@ -9,6 +9,10 @@
 /* for time_t: */
 #include <sys/types.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define FMT_LONG  41 /* enough space to hold -2^127 in decimal, plus \0 */
 #define FMT_ULONG 40 /* enough space to hold 2^128 - 1 in decimal, plus \0 */
 #define FMT_8LONG 44 /* enough space to hold 2^128 - 1 in octal, plus \0 */
@@ -92,9 +96,11 @@ size_t fmt_httpdate(char* dest,time_t t);
 
 #define FMT_UTF8 5
 #define FMT_ASN1LENGTH 17 /* enough space to hold 2^128-1 */
+#define FMT_ASN1TAG 19 /* enough space to hold 2^128-1 */
 /* some variable length encodings for integers */
 size_t fmt_utf8(char* dest,uint32_t n);	/* can store 0-0x7fffffff */
-size_t fmt_asn1derlength(char* dest,unsigned long long l);
+size_t fmt_asn1derlength(char* dest,unsigned long long l);	/* 0-0x7f: 1 byte, above that 1+bytes_needed bytes */
+size_t fmt_asn1dertag(char* dest,unsigned long long l);	/* 1 byte for each 7 bits; upper bit = more bytes coming */
 
 /* internal functions, may be independently useful */
 char fmt_tohex(char c);
@@ -107,4 +113,8 @@ size_t fmt_strm_internal(char* dest,...);
 #endif
 #define fmt_strm_alloca(a,...) ({ size_t len=fmt_strm((char*)0,a,__VA_ARGS__)+1; char* c=(len<MAX_ALLOCA?alloca(len):0); if (c) c[fmt_strm(c,a,__VA_ARGS__)]=0; c;})
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

fmt/fmt_asn1derlength.3

@@ -6,8 +6,9 @@ fmt_asn1derlength \- encode unsigned integer like ASN.1 DER length
 
 size_t \fBfmt_asn1derlength\fP(char *\fIdest\fR,unsigned long long \fIsource\fR);
 .SH DESCRIPTION
-fmt_asn1derlength encodes an unsigned integer using the UTF-8 rules.  This
+fmt_asn1derlength encodes an unsigned integer using the ASN.1 DER
-can take from 1 byte (0-0x7f) up to sizeof(source)+1 bytes.
+for encoding tag lengths.  This can take from 1 byte (0-0x7f) up to
+sizeof(source)+1 bytes.
 
 If \fIdest\fR equals FMT_LEN (i.e. is NULL), fmt_asn1derlength returns the
 number of bytes it would have written.

fmt/fmt_asn1dertag.3

@@ -0,0 +1,18 @@
+.TH fmt_asn1dertag 3
+.SH NAME
+fmt_asn1dertag \- encode unsigned integer like ASN.1 DER tag
+.SH SYNTAX
+.B #include <fmt.h>
+
+size_t \fBfmt_asn1dertag\fP(char *\fIdest\fR,unsigned long long \fIsource\fR);
+.SH DESCRIPTION
+fmt_asn1dertag encodes an unsigned integer using the ASN.1 DER for
+encoding tag.  This takes one byte for every 7 bits in the number.
+
+If \fIdest\fR equals FMT_LEN (i.e. is NULL), fmt_asn1dertag returns the
+number of bytes it would have written.
+
+For convenience, fmt.h defines the integer FMT_ASN1TAG to be big
+enough to contain every possible fmt_asn1dertag output.
+.SH "SEE ALSO"
+scan_asn1dertag(3)

fmt/fmt_asn1dertag.c

@@ -0,0 +1,15 @@
+#include "fmt.h"
+
+/* write int in least amount of bytes, return number of bytes */
+/* as used in ASN.1 DER tag */
+size_t fmt_asn1dertag(char* dest,unsigned long long l) {
+  /* encoding is either l%128 or (0x80+number of bytes,bytes) */
+  size_t n=0,i;
+  unsigned long long t;
+  for (t=l, n=1; t>0x7f; t>>=7) ++n;
+  for (i=0; i<n; ++i) {
+    if (dest) dest[n-i-1]=((i!=0)<<7) | (l&0x7f);
+    l>>=7;
+  }
+  return i;
+}

io.h

@@ -7,6 +7,10 @@
 #include "uint64.h"
 #include "taia.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* like open(s,O_RDONLY) */
 /* return 1 if ok, 0 on error */
 int io_readfile(int64* d,const char* s);
@@ -72,7 +76,8 @@ int64 io_canwrite();
 int64 io_timeouted();
 
 /* put d on internal data structure, return 1 on success, 0 on error */
-int io_fd(int64 d);
+int io_fd(int64 d);		/* use this for sockets before you called connect() or accept() */
+int io_fd_connected(int64 d);	/* use this for connected sockets (assumes socket is writable) */
 
 void io_setcookie(int64 d,void* cookie);
 void* io_getcookie(int64 d);
@@ -115,4 +120,8 @@ int64 io_mmapwritefile(int64 out,int64 in,uint64 off,uint64 bytes,io_write_callb
 #include_next <io.h>
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

io_internal.h

@@ -18,14 +18,32 @@ my_extern HANDLE io_comport;
 #endif
 #endif
 
+/* We simulate a level-triggered API on top of an event signalling
+ * mechanism that can be level-triggered (epoll/kqueue/poll) or
+ * edge-triggered (SIGIO).
+ * Difficulty: we want to avoid unnecessary syscalls, so we keep state
+ * internally.  If the user says he does not want to read/write anymore,
+ * we don't tell the kernel straight away.  The rationale is that the
+ * typical protocol consists of interleaved reading and writing, so
+ * after each read you'd call io_dontwantread, io_wantwrite, io_wait,
+ * io_dontwantwrite, io_wantread, and in the regular case there is no
+ * incoming data between io_dontwantread and io_wantread, so we might as
+ * well optimistically not do those syscalls and then handle the
+ * complexity if there is more incoming data. */
+
+/* Basically, we tell the kernel that we want to read if !canread,
+ * and we tell the kernel that we want to write if !canwrite. */
+
 typedef struct {
   tai6464 timeout;
-  unsigned int wantread:1;
+  unsigned int wantread:1;	/* does the app want to read/write? */
   unsigned int wantwrite:1;
-  unsigned int canread:1;
+  unsigned int canread:1;	/* do we know we can read/write? */
   unsigned int canwrite:1;
-  unsigned int nonblock:1;
+  unsigned int nonblock:1;	/* is this socket non-blocking? */
-  unsigned int inuse:1;
+  unsigned int inuse:1;		/* internal consistency checking */
+  unsigned int kernelwantread:1;	/* did we tell the kernel we want to read/write? */
+  unsigned int kernelwantwrite:1;
 #ifdef __MINGW32__
   unsigned int readqueued:2;
   unsigned int writequeued:2;

iob.h

@@ -16,6 +16,10 @@
 #include "io.h"
 #include "array.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct io_batch {
   array b;
   uint64 bytesleft;
@@ -37,4 +41,8 @@ void iob_free(io_batch* b);
 void iob_prefetch(io_batch* b,uint64 bytes);
 uint64 iob_bytesleft(const io_batch* b);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

ip4.h

@@ -2,6 +2,10 @@
 #ifndef IP4_H
 #define IP4_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 unsigned int scan_ip4(const char *src,char *ip);
 unsigned int fmt_ip4(char *dest,const char *ip);
 
@@ -14,4 +18,8 @@ unsigned int fmt_ip4(char *dest,const char *ip);
 
 extern const char ip4loopback[4]; /* = {127,0,0,1};*/
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

ip6.h

@@ -5,6 +5,10 @@
 #include "byte.h"
 #include "uint32.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 unsigned int scan_ip6(const char* src,char* ip);
 unsigned int fmt_ip6(char* dest,const char* ip);
 unsigned int fmt_ip6c(char* dest,const char* ip);
@@ -33,4 +37,8 @@ extern const char V6any[16]; /*={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; */
 
 #define ip6_isv4mapped(ip) (byte_equal(ip,12,V4mappedprefix))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

mmap.h

@@ -4,6 +4,10 @@
 
 #include <stddef.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* open file for reading, mmap whole file, close file, write length of
  * map in filesize and return pointer to map. */
 char* mmap_read(const char *filename,size_t* filesize);
@@ -20,4 +24,8 @@ char* mmap_shared(const char *filename,size_t* filesize);
 /* unmap a mapped region */
 int mmap_unmap(char* mapped,size_t maplen);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

ndelay.h

@@ -2,7 +2,15 @@
 #ifndef NDELAY_H
 #define NDELAY_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 int ndelay_on(int);
 int ndelay_off(int);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

open.h

@@ -2,6 +2,10 @@
 #ifndef OPEN_H
 #define OPEN_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* open filename for reading and return the file handle or -1 on error */
 int open_read(const char* filename);
 
@@ -29,4 +33,8 @@ int open_write(const char* filename);
  * Return file handle or -1 on error. */
 int open_rw(const char* filename);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

openreadclose.h

@@ -4,6 +4,14 @@
 
 #include "stralloc.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 int openreadclose(const char *filename,stralloc *buf,size_t initiallength);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

rangecheck.h

@@ -5,6 +5,10 @@
 #include <inttypes.h>
 #include <stddef.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* We are trying to achieve that gcc has to inline the function and we
  * don't want it to emit a copy of the function.  This can be done with
  * static inline or with extern inline.  static inline tells gcc to not
@@ -151,4 +155,8 @@ int range_str4inbuf(const void* buf,size_t len,const void* stringstart);
 
 #undef __static
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

readclose.h

@@ -3,7 +3,15 @@
 
 #include "stralloc.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 int readclose_append(int fd,stralloc *buf,size_t initlen);
 int readclose(int fd,stralloc *buf,size_t initlen);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

safemult.h

@@ -6,6 +6,10 @@
 #include "uint32.h"
 #include "uint64.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* return 0 for overflow, 1 for ok */
 int umult16(uint16 a,uint16 b,uint16* c);
 int imult16( int16 a, int16 b, int16* c);
@@ -16,4 +20,8 @@ int imult32( int32 a, int32 b, int32* c);
 int umult64(uint64 a,uint64 b,uint64* c);
 int imult64( int64 a, int64 b, int64* c);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

scan.h

@@ -4,9 +4,15 @@
 
 /* for size_t: */
 #include <stddef.h>
+/* for uint32_t: */
+#include <stdint.h>
 /* for time_t: */
 #include <sys/types.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef __pure__
 #define __pure__
 #endif
@@ -76,9 +82,14 @@ size_t scan_httpdate(const char *in,time_t *t) __pure__;
 /* some variable length encodings for integers */
 size_t scan_utf8(const char* in,size_t len,uint32_t* n) __pure__;
 size_t scan_asn1derlength(const char* in,size_t len,unsigned long long* n) __pure__;
+size_t scan_asn1dertag(const char* in,size_t len,unsigned long long* n) __pure__;
 
 /* a few internal function that might be useful independently */
 /* convert from hex ASCII, return 0 to 15 for success or -1 for failure */
 int scan_fromhex(unsigned char c);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

scan/scan_asn1derlength.3

@@ -1,20 +1,20 @@
-.TH scan_asn1length 3
+.TH scan_asn1derlength 3
 .SH NAME
-scan_asn1length \- decode an unsigned integer from ASN.1 DER length encoding
+scan_asn1derlength \- decode an unsigned integer from ASN.1 DER length encoding
 .SH SYNTAX
 .B #include <scan.h>
 
-size_t \fBscan_asn1length\fP(const char *\fIsrc\fR,size_t \fIlen\fR,unsigned long long *\fIdest\fR);
+size_t \fBscan_asn1derlength\fP(const char *\fIsrc\fR,size_t \fIlen\fR,unsigned long long *\fIdest\fR);
 .SH DESCRIPTION
-scan_asn1length decodes an unsigned integer in ASN.1 DER length encoding
+scan_asn1derlength decodes an unsigned integer in ASN.1 DER length encoding
 from a memory area holding binary data.  It writes the decode value in
 \fIdest\fR and returns the number of bytes it read from \fIsrc\fR.
 
-scan_asn1length never reads more than \fIlen\fR bytes from \fIsrc\fR.  If the
+scan_asn1derlength never reads more than \fIlen\fR bytes from \fIsrc\fR.  If the
 sequence is longer than that, or the memory area contains an invalid
-sequence, scan_asn1length returns 0 and does not touch \fIdest\fR.
+sequence, scan_asn1derlength returns 0 and does not touch \fIdest\fR.
 
 The length of the longest ASN.1 DER length sequence is 128 bytes.  In
 practice the largest sequence is sizeof(*dest)+1.
 .SH "SEE ALSO"
-fmt_asn1length(3)
+fmt_asn1derlength(3)

scan/scan_asn1dertag.3

@@ -0,0 +1,20 @@
+.TH scan_asn1dertag 3
+.SH NAME
+scan_asn1dertag \- decode an unsigned integer from ASN.1 DER length encoding
+.SH SYNTAX
+.B #include <scan.h>
+
+size_t \fBscan_asn1dertag\fP(const char *\fIsrc\fR,size_t \fIlen\fR,unsigned long long *\fIdest\fR);
+.SH DESCRIPTION
+scan_asn1dertag decodes an unsigned integer in ASN.1 DER tag encoding
+from a memory area holding binary data.  It writes the decode value in
+\fIdest\fR and returns the number of bytes it read from \fIsrc\fR.
+
+scan_asn1dertag never reads more than \fIlen\fR bytes from \fIsrc\fR.  If the
+sequence is longer than that, or the memory area contains an invalid
+sequence, scan_asn1dertag returns 0 and does not touch \fIdest\fR.
+
+The length of the longest ASN.1 DER length sequence is 128 bytes.  In
+practice the largest sequence is sizeof(*dest)+1.
+.SH "SEE ALSO"
+fmt_asn1dertag(3)

scan/scan_asn1dertag.c

@@ -0,0 +1,14 @@
+#include "scan.h"
+
+size_t scan_asn1dertag(const char* src,size_t len,unsigned long long* length) {
+  size_t n;
+  unsigned long long l=0;
+  for (n=0; n<len; ++n) {
+    l=(l<<7) | (src[n]&0x7f);
+    if (!(src[n]&0x80)) {
+      *length=l;
+      return n+1;
+    }
+  }
+  return 0;
+}

socket.h

@@ -7,6 +7,10 @@
 #include "uint16.h"
 #include "uint32.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 int socket_tcp4(void);
 int socket_tcp4b(void);
 int socket_udp4(void);
@@ -117,4 +121,8 @@ extern int noipv6;
 
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

str.h

@@ -3,6 +3,11 @@
 #define STR_H
 
 #include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef __pure__
 #define __pure__
 #endif
@@ -46,4 +51,8 @@ int str_start(const char *a,const char *b) __pure__;
 /* convenience shortcut to test for string equality */
 #define str_equal(s,t) (!str_diff((s),(t)))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

stralloc.h

@@ -3,6 +3,11 @@
 #define STRALLOC_H
 
 #include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef __pure__
 #define __pure__
 #endif
@@ -158,4 +163,8 @@ int buffer_get_new_token_sa_pred(buffer* b,stralloc* sa,sa_predicate p);
 void buffer_fromsa(buffer* b,stralloc* sa);
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

tai.h

@@ -6,6 +6,10 @@
 
 #include "uint64.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* A struct tai value is an integer between 0 inclusive and 2^64
  * exclusive. The format of struct tai is designed to speed up common
  * operations; applications should not look inside struct tai.
@@ -58,4 +62,8 @@ void tai_unpack(const char *,struct tai *);
 
 void tai_uint(struct tai *,unsigned int);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

taia.h

@@ -7,6 +7,10 @@
 #include "tai.h"
 #include "uint32.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* A struct taia value is a number between 0 inclusive and 2^64
  * exclusive. The number is a multiple of 10^-18. The format of struct
  * taia is designed to speed up common operations; applications should
@@ -67,4 +71,8 @@ unsigned int taia_fmtfrac(char *s,const tai6464 *t);
 /* initialize t to secs seconds. */
 void taia_uint(tai6464 *t,unsigned int secs);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

textcode.h

@@ -4,6 +4,10 @@
 
 #include <stddef.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* These take len bytes from src and write them in encoded form to
  * dest (if dest != NULL), returning the number of bytes written. */
 
@@ -111,4 +115,8 @@ size_t scan_tofrom_array(size_t (*func)(const char*,char*,size_t*),
 
 extern const char base64[64];
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

uint16.h

@@ -4,6 +4,10 @@
 
 #include <inttypes.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef uint16_t uint16;
 typedef int16_t int16;
 
@@ -35,4 +39,8 @@ uint16 uint16_read_big(const char *in);
 
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

uint32.h

@@ -4,6 +4,10 @@
 
 #include <inttypes.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef uint32_t uint32;
 typedef int32_t int32;
 
@@ -35,4 +39,8 @@ uint32 uint32_read_big(const char *in);
 
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

uint64.h

@@ -4,6 +4,10 @@
 
 #include <inttypes.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef uint64_t uint64;
 typedef int64_t int64;
 
@@ -25,4 +29,8 @@ uint64 uint64_read_big(const char *in);
 
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

windoze.h

@@ -1,5 +1,9 @@
 #ifdef __MINGW32__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* set errno to WSAGetLastError() */
 int winsock2errno(long l);
 void __winsock_init(void);
@@ -9,4 +13,8 @@ void __winsock_init(void);
 #define winsock2errno(fnord) (fnord)
 #define __winsock_init()
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif