### -*-pyrex-*-
###
### Basic definitions, used all over
###
### (c) 2005 Straylight/Edgeware
###

###----- Licensing notice ---------------------------------------------------
###
### This file is part of the Python interface to mLib.
###
### mLib/Python is free software; you can redistribute it and/or modify
### it under the terms of the GNU General Public License as published by
### the Free Software Foundation; either version 2 of the License, or
### (at your option) any later version.
###
### mLib/Python is distributed in the hope that it will be useful,
### but WITHOUT ANY WARRANTY; without even the implied warranty of
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
### GNU General Public License for more details.
###
### You should have received a copy of the GNU General Public License
### along with mLib/Python; if not, write to the Free Software Foundation,
### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

###--------------------------------------------------------------------------
### C library.

cdef extern from 'errno.h':
  int errno
  enum:
    EINTR
    EAGAIN
cdef extern from 'limits.h':
  enum:
    LONG_MAX
cdef extern from 'math.h':
  double modf(double x, double *i)
cdef extern from 'stddef.h':
  ctypedef int size_t
cdef extern from 'string.h':
  void memcpy(void *p, void *q, size_t n)
  char *strerror(int err)
  size_t strlen(char *p)

###--------------------------------------------------------------------------
### Unix interface.

cdef extern from 'sys/types.h':
  pass
cdef extern from 'sys/time.h':
  struct timeval:
    int tv_sec
    int tv_usec

cdef extern from 'sys/socket.h':
  struct sockaddr:
    int sa_family
  enum:
    AF_INET
  int getsockname(int fd, sockaddr *pa, size_t *psz)
  int getpeername(int fd, sockaddr *pa, size_t *psz)
cdef extern from 'arpa/inet.h':
  struct in_addr:
    int s_addr
  int inet_aton(char *rp, in_addr *ia)
  char *inet_ntoa(in_addr ia)
cdef extern from 'netinet/in.h':
  struct sockaddr_in:
    int sin_family
    in_addr sin_addr
    int sin_port
  int htons(int x)
  int htonl(int x)
  int ntohs(int x)
  int ntohl(int x)
cdef extern from 'netdb.h':
  struct hostent:
    char *h_name
    char **h_aliases
    int h_addrtype
    int h_length
    char **h_addr_list
    char *h_addr
  int h_errno

###--------------------------------------------------------------------------
### Python.

cdef extern from 'Python.h':

  ctypedef struct PyObject:
    pass
  ctypedef struct PyTypeObject:
    pass

  object PyString_FromStringAndSize(char *p, int len)
  int PyString_AsStringAndSize(obj, char **p, int *len) except -1
  int PyObject_AsReadBuffer(obj, void **buf, int *len) except -1
  int PyObject_TypeCheck(obj, ty)
  object PyInt_FromLong(long i)
  object PyLong_FromUnsignedLong(unsigned long i)
  char *PyString_AS_STRING(string)
  int _PyString_Resize(PyObject **string, int size) except -1

  void Py_INCREF(PyObject *obj)
  void Py_DECREF(PyObject *obj)

###--------------------------------------------------------------------------
### mLib basic stuff.

cdef extern from 'mLib/alloc.h':
  char *xstrdup(char *p)
  void *xmalloc(size_t sz)
  void xfree(void *p)

cdef extern from 'mLib/bits.h':
  ctypedef int uint32

cdef extern from 'mLib/dstr.h':
  ctypedef struct dstr:
    char *buf
    int len
  void DCREATE(dstr *d)
  void dstr_destroy(dstr *d)

###--------------------------------------------------------------------------
### CRC32.

cdef extern from 'mLib/crc32.h':
  uint32 c_crc32 "crc32" (uint32 a, void *p, int sz)

###--------------------------------------------------------------------------
### Universal hashing.

cdef extern from 'mLib/unihash.h':
  ctypedef struct unihash_info:
    pass
  void unihash_setkey(unihash_info *i, uint32 k)
  uint32 UNIHASH_INIT(unihash_info *i)
  uint32 unihash_hash(unihash_info *i, uint32 a, void *p, int sz)
  unihash_info unihash_global

###--------------------------------------------------------------------------
### Symbol tables.

cdef extern from 'mLib/sym.h':
  ctypedef struct sym_table:
    pass
  ctypedef struct sym_base:
    pass
  ctypedef struct sym_iter:
    pass
  void sym_create(sym_table *t)
  void sym_destroy(sym_table *t)
  void *sym_find(sym_table *t, char *n, long l, int sz, unsigned *f)
  void sym_remove(sym_table *t, void *b)
  char *SYM_NAME(void *b)
  int SYM_LEN(void *b)
  void sym_mkiter(sym_iter *i, sym_table *t)
  void *sym_next(sym_iter *i)

###--------------------------------------------------------------------------
### String utilities.

cdef extern from 'mLib/str.h':
  enum:
    STRF_QUOTE
    STRF_PREFIX
  char *str_qword(char **pp, unsigned f)
  size_t str_qsplit(char *p, char **v, size_t c, char **rest, unsigned f)
  int str_matchx(char *p, char *s, unsigned f)
  void str_sanitize(char *d, char *p, size_t sz)

cdef extern from 'mLib/versioncmp.h':
  int _versioncmp "versioncmp"(char *va, char *vb)

###--------------------------------------------------------------------------
### Form-urlencoding functions.

cdef extern from 'mLib/url.h':
  struct url_ectx:
    unsigned f
  struct url_dctx:
    char *p
    unsigned f
  enum:
    URLF_STRICT
    URLF_LAX
    URLF_SEMI
  void url_initenc(url_ectx *ctx)
  void url_enc(url_ectx *ctx, dstr *d, char *name, char *value)
  void url_initdec(url_dctx *ctx, char *p)
  int url_dec(url_dctx *ctx, dstr *n, dstr *v)

###--------------------------------------------------------------------------
### Atom stuff.

## Atoms.
##
## Partly written in `real' C.
cdef extern from 'atom.h':
  ctypedef struct atom:
    pass
  ctypedef struct atom_iter:
    pass
  ctypedef struct atom_table:
    pass
  atom_table *ATOM_GLOBAL
  void atom_mkiter(atom_iter *i, atom_table *t)
  atom *atom_next(atom_iter *)
  void atom_pysetup()
  atom_pywrap(atom *a)
  atom_pyintern(obj)
  atom *ATOM_A(obj)
  PyTypeObject atom_pytype

## Association tables.
cdef extern from 'mLib/assoc.h':
  ctypedef struct assoc_table:
    pass
  ctypedef struct assoc_base:
    pass
  ctypedef struct assoc_iter:
    pass
  void assoc_create(assoc_table *t)
  void assoc_destroy(assoc_table *t)
  void *assoc_find(assoc_table *t, atom *a, int sz, unsigned *f)
  void assoc_remove(assoc_table *t, void *b)
  atom *ASSOC_ATOM(void *b)
  void assoc_mkiter(assoc_iter *i, assoc_table *t)
  void *assoc_next(assoc_iter *i)

###--------------------------------------------------------------------------
### Double-ended arrays.

cdef extern from 'array.h':
  void da_pysetup()
  PyTypeObject da_pytype
  PyTypeObject daiter_pytype

###--------------------------------------------------------------------------
### Line buffer.

cdef extern from 'mLib/lbuf.h':
  cdef struct lbuf:
    int f
    int delim
    size_t sz
  enum:
    LBUF_ENABLE
    _LBUF_CRLF "LBUF_CRLF"
    _LBUF_STRICTCRLF "LBUF_STRICTCRLF"
  void lbuf_flush(lbuf *b, char *p, size_t len)
  void lbuf_close(lbuf *b)
  size_t lbuf_free(lbuf *b, char **p)
  void lbuf_setsize(lbuf *b, size_t sz)
  void lbuf_enable(lbuf *b)
  void lbuf_disable(lbuf *b)
  void lbuf_init(lbuf *b,
                 void (*func)(char *s, size_t len, void *arg), void *arg)
  void lbuf_destroy(lbuf *b)

###--------------------------------------------------------------------------
### Packet buffer.

cdef extern from 'mLib/pkbuf.h':
  ctypedef struct pkbuf:
    int f
    int want
  enum:
    PKBUF_ENABLE
  void pkbuf_flush(pkbuf *pk, unsigned char *p, size_t len)
  void pkbuf_close(pkbuf *pk)
  size_t pkbuf_free(pkbuf *pk, unsigned char **p)
  void pkbuf_want(pkbuf *pk, size_t sz)
  void pkbuf_init(pkbuf *b,
                  void (*func)(unsigned char *s, size_t len,
                               pkbuf *pk, size_t *keep, void *arg),
                  void *arg)
  void pkbuf_destroy(pkbuf *b)

###--------------------------------------------------------------------------
### Select stuff.

## Basics.
cdef extern from 'mLib/sel.h':
  ctypedef struct sel_state:
    pass
  ctypedef struct sel_file:
    int fd
  ctypedef struct sel_timer:
    pass
  enum:
    _SEL_READ "SEL_READ"
    _SEL_WRITE "SEL_WRITE"
    _SEL_EXC "SEL_EXC"
  void sel_init(sel_state *s)
  void sel_initfile(sel_state *s, sel_file *f, int fd, unsigned mode,
                    void (*func)(int fd, unsigned mode, void *arg),
                    void *arg)
  void sel_force(sel_file *f)
  void sel_addfile(sel_file *f)
  void sel_rmfile(sel_file *f)
  void sel_addtimer(sel_state *s, sel_timer *t, timeval *tv,
                    void (*func)(timeval *tv, void *arg),
                    void *arg)
  void sel_rmtimer(sel_timer *t)
  int sel_select(sel_state *s) except *

### Non-blocking connection.
cdef extern from 'mLib/conn.h':
  ctypedef struct conn:
    pass
  int conn_fd(conn *c, sel_state *s, int fd,
              void (*func)(int fd, void *arg), void *arg)
  void conn_kill(conn *c)

## Background name resolver.
cdef extern from 'mLib/bres.h':
  ctypedef struct bres_client:
    pass
  void bres_byname(bres_client *r, char *name,
                   void (*func)(hostent *h, void *arg), void *arg)
  void bres_byaddr(bres_client *r, in_addr addr,
                   void (*func)(hostent *h, void *arg), void *arg)
  void bres_abort(bres_client *r)
  void bres_exec(char *null)
  void bres_init(sel_state *s)

## In-band signal handling.
cdef extern from 'mLib/sig.h':
  ctypedef struct sig:
    pass
  void sig_add(sig *s, int n, void (*func)(int n, void *arg), void *arg)
  void sig_remove(sig *s)
  void sig_init(sel_state *s)

## Line buffer.
cdef extern from 'mLib/selbuf.h':
  ctypedef struct selbuf:
    sel_file reader
    lbuf b
  void selbuf_enable(selbuf *b)
  void selbuf_disable(selbuf *b)
  void selbuf_setsize(selbuf *b, size_t sz)
  void selbuf_init(selbuf *b, sel_state *s, int fd,
                   void (*func)(char *s, size_t len, void *arg), void *arg)
  void selbuf_destroy(selbuf *b)

## Packet buffer.
cdef extern from 'mLib/selpk.h':
  ctypedef struct selpk:
    sel_file reader
    pkbuf pk
  void selpk_enable(selpk *b)
  void selpk_disable(selpk *b)
  void selpk_want(selpk *b, size_t sz)
  void selpk_init(selpk *b, sel_state *s, int fd,
                  void (*func)(unsigned char *p, size_t n,
                               pkbuf *pk, size_t *keep, void *arg),
                  void *arg)
  void selpk_destroy(selpk *b)

## Ident client.
cdef extern from 'mLib/ident.h':
  ctypedef struct ident_request:
    pass
  enum:
    IDENT_USERID
    IDENT_ERROR
    IDENT_BAD
  struct ident_userid:
    char *os
    char *user
  union ident_u:
    ident_userid userid
    char *error
  ctypedef struct ident_reply:
    int sport
    int dport
    int type
    ident_u u
  void ident(ident_request *rq, sel_state *s,
             sockaddr_in *local, sockaddr_in *remote,
             void (*func)(ident_reply *r, void *arg),
             void *arg)
  void ident_abort(ident_request *rq)

###--------------------------------------------------------------------------
### Error reporting.

cdef extern from 'mLib/quis.h':
  void _ego "ego"(char *prog)
  char *_quis "quis"()

cdef extern from 'mLib/report.h':
  void _moan "moan"(char *f, char *msg)

###--------------------------------------------------------------------------
### File comparison.

cdef extern from 'mLib/fwatch.h':
  ctypedef struct fwatch:
    pass
  void fwatch_init(fwatch *f, char *name)
  void fwatch_initfd(fwatch *f, int fd)
  int fwatch_update(fwatch *f, char *name)
  int fwatch_updatefd(fwatch *f, int fd)

###--------------------------------------------------------------------------
### File descriptor hacking.

cdef extern from 'mLib/fdflags.h':
  int _fdflags "fdflags"(int fd,
                         unsigned fbic, unsigned fxor,
                         unsigned fdbic, unsigned fdxor)

cdef extern from 'mLib/fdpass.h':
  int fdpass_send(int sock, int fd, void *p, size_t sz)
  int fdpass_recv(int sock, int *fd, void *p, size_t sz)

cdef extern from 'mLib/mdup.h':
  ctypedef struct mdup_fd:
    int cur
    int want
  int _mdup "mdup"(mdup_fd *v, size_t n)

###--------------------------------------------------------------------------
### Daemon utilities.

cdef extern from 'mLib/daemonize.h':
  int _daemonize "daemonize"()
  void _detachtty "detachtty"()

###--------------------------------------------------------------------------
### Internal utilities.

cdef extern from 'grim.h':
  int PSIZEOF(void *x)

###----- That's all, folks --------------------------------------------------