./htsnet.h

/* ------------------------------------------------------------ */
/*
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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Important notes:

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*/

/* ------------------------------------------------------------ */
/* File: Net definitions                                        */
/*       Used in .c files that needs connect() functions and so */
/* Note: includes htsbasenet.h                                  */
/* Author: Xavier Roche                                         */
/* ------------------------------------------------------------ */

#ifndef HTS_DEFNETH
#define HTS_DEFNETH

/* basic net definitions */
#include "htsglobal.h"
#include "htsbasenet.h"
#include "htssafe.h"

#include <string.h>
#include <ctype.h>
#ifdef _WIN32
 // pour read
#include <io.h>
 // pour FindFirstFile
#include <winbase.h>
typedef USHORT in_port_t;
typedef ADDRESS_FAMILY sa_family_t;
#else
 //typedef int T_SOC;
#define INVALID_SOCKET -1
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/time.h>
 /* Force for sun env. */
#ifndef BSD_COMP
#define BSD_COMP
#endif
#include <sys/ioctl.h>
 /* gethostname & co */
#ifndef _WIN32
#include <unistd.h>
#endif
 /* inet_addr */
#include <arpa/inet.h>
 // pas la peine normalement..
#ifndef HTS_DO_NOT_REDEFINE_in_addr_t
typedef unsigned long in_addr_t;
#endif
#endif

#ifdef __cplusplus
extern "C" {
#endif

/* Ipv4 structures */
#if HTS_INET6 != 0
typedef struct in6_addr INaddr;
#else
typedef struct in_addr INaddr;
#endif

/* This should handle all cases */
#ifndef HTS_DEF_FWSTRUCT_SOCaddr
#define HTS_DEF_FWSTRUCT_SOCaddr
typedef struct SOCaddr SOCaddr;
#endif
struct SOCaddr {
  union {
    /* Generic version, for network functions such as getnameinfo() */
    struct sockaddr sa;
    /* IPv4 */
    struct sockaddr_in in;
#if HTS_INET6 != 0
    /* IPv6 */
    struct sockaddr_in6 in6;
#endif
  } m_addr;
};

static HTS_INLINE HTS_UNUSED in_port_t* SOCaddr_sinport_(SOCaddr *const addr,
                                                         const char *file, const int line) {
  assertf_(addr != NULL, file, line);
  switch(addr->m_addr.sa.sa_family) {
  case AF_INET:
    return &addr->m_addr.in.sin_port;
    break;
#if HTS_INET6 != 0
  case AF_INET6:
    return &addr->m_addr.in6.sin6_port;
    break;
#endif
  default:
    assertf_(! "invalid structure", file, line);
    return 0;
    break;
  }
}

static HTS_INLINE HTS_UNUSED socklen_t SOCaddr_size_(const SOCaddr*const addr,
                                                     const char *file, const int line) {
  assertf_(addr != NULL, file, line);
  switch(addr->m_addr.sa.sa_family) {
  case AF_INET:
    return sizeof(addr->m_addr.in);
    break;
#if HTS_INET6 != 0
  case AF_INET6:
    return sizeof(addr->m_addr.in6);
    break;
#endif
  default:
    return 0;
    break;
  }
}

static HTS_INLINE HTS_UNUSED void SOCaddr_clear_(SOCaddr*const addr,
                                                 const char *file, const int line) {
  assertf_(addr != NULL, file, line);
  addr->m_addr.sa.sa_family = AF_UNSPEC;
}

/* Ipv4/6 structure members */
#define SOCaddr_sinfamily(server)   ((server).m_addr.sa.sa_family)
#define SOCaddr_sinport(server)     (*SOCaddr_sinport_(&(server), __FILE__, __LINE__))
#define SOCaddr_size(server)        (SOCaddr_size_(&(server), __FILE__, __LINE__))
#define SOCaddr_is_valid(server)    (SOCaddr_size_(&(server), __FILE__, __LINE__) != 0 )
#define SOCaddr_clear(server)       SOCaddr_clear_(&(server), __FILE__, __LINE__)
#define SOCaddr_sockaddr(server)    ((server).m_addr.sa)
#define SOCaddr_capacity(server)    sizeof((server).m_addr)

/* AF_xx */
#if HTS_INET6 != 0
#define AFinet AF_INET6
#else
#define AFinet AF_INET
#endif

/* Set port to sockaddr structure */
#define SOCaddr_initport(server, port) do { \
  SOCaddr_sinport(server) = htons((in_port_t) (port)); \
} while(0)

static HTS_INLINE HTS_UNUSED socklen_t SOCaddr_initany_(SOCaddr*const addr,
                                                        const char *file, const int line) {
  assertf_(addr != NULL, file, line);
  memset(&addr->m_addr.in, 0, sizeof(addr->m_addr.in));
  addr->m_addr.in.sin_family = AF_INET;
  return SOCaddr_size_(addr, file, line);
}

#define SOCaddr_initany(server) do { \
  SOCaddr_initany_(&(server), __FILE__, __LINE__); \
} while(0)

/*
  Copy sockaddr_in/sockaddr_in6/raw IPv4/raw IPv6 to our opaque SOCaddr
*/
static HTS_UNUSED socklen_t SOCaddr_copyaddr_(SOCaddr*const server, 
                                              const void *data, const size_t data_size,
                                              const char *file, const int line) {
  assertf_(server != NULL, file, line);
  assertf_(data != NULL, file, line);

  if (data_size == sizeof(struct sockaddr_in)) {
    memcpy(&server->m_addr.in, data, sizeof(struct sockaddr_in));
    assertf_(server->m_addr.sa.sa_family == AF_INET, file, line);
#if HTS_INET6 != 0
  } else if (data_size == sizeof(struct sockaddr_in6)) {
    memcpy(&server->m_addr.in6, data, sizeof(struct sockaddr_in6));
    assertf_(server->m_addr.sa.sa_family == AF_INET6, file, line);
#endif
  } else if (data_size == 4) {
    memset(&server->m_addr.in, 0, sizeof(server->m_addr.in));
    server->m_addr.in.sin_family = AF_INET;
    server->m_addr.in.sin_port = 0;
    memcpy(&server->m_addr.in.sin_addr, data, 4);
#if HTS_INET6 != 0
  } else if (data_size == 16) {
    memset(&server->m_addr.in6, 0, sizeof(server->m_addr.in6));
    server->m_addr.in6.sin6_family = AF_INET6;
    server->m_addr.in6.sin6_port = 0;
    memcpy(&server->m_addr.in6.sin6_addr, data, 16);
#endif
  } else {
    server->m_addr.in.sin_family = AF_INET;
  }
  return SOCaddr_size_(server, file, line);
}

#define SOCaddr_copyaddr(server, server_len, hpaddr, hpsize) do { \
  server_len = (int) SOCaddr_copyaddr_(&(server), hpaddr, hpsize, __FILE__, __LINE__); \
} while(0)

#define SOCaddr_copyaddr2(server, hpaddr, hpsize) do { \
  (void) SOCaddr_copyaddr_(&(server), hpaddr, hpsize, __FILE__, __LINE__); \
} while(0)

#define SOCaddr_copy_SOCaddr(dest, src) do { \
  SOCaddr_copyaddr_(&(dest), &(src).m_addr.sa, SOCaddr_size(src), __FILE__, __LINE__); \
} while(0)

/* Get dotted address */

static HTS_UNUSED void SOCaddr_inetntoa_(char *namebuf, size_t namebuflen, 
                                         SOCaddr *const ss,
                                         const char *file, const int line) {
  assertf_(namebuf != NULL, file, line);
  assertf_(ss != NULL, file, line);

  if (getnameinfo(&ss->m_addr.sa, sizeof(ss->m_addr),
                  namebuf, namebuflen, 
                  NULL, 0, 
                  NI_NUMERICHOST) == 0) {
    /* remove scope id(s) */
    char *const pos = strchr(namebuf, '%');
    if (pos != NULL) {
      *pos = '\0';
    }
  } else {
    namebuf[0] = '\0';
  }
}

#define SOCaddr_inetntoa(namebuf, namebuflen, ss) \
  SOCaddr_inetntoa_(namebuf, namebuflen, &(ss), __FILE__, __LINE__)

/* Get protocol ID */
#define SOCaddr_getproto(ss) ( SOCaddr_size(ss) == sizeof(struct sockaddr_in) ? '1' : '2')

/* Socket length type */
typedef socklen_t SOClen;

#ifdef __cplusplus
}
#endif

#endif