Top Level Namespace

Defined Under Namespace

Classes: Addrinfo, BasicSocket, IPSocket, SOCKSSocket, Socket, SocketError, TCPServer, TCPSocket, UDPSocket, UNIXServer, UNIXSocket

Constant Summary collapse

AF_INET6_SOCKET_CREATION_TEST = 
<<EOF
#include <sys/types.h>
#ifndef _WIN32
#include <sys/socket.h>
#endif
int
main(void)
{
  socket(AF_INET6, SOCK_STREAM, 0);
  return 0;
}
EOF
GETADDRINFO_GETNAMEINFO_TEST = 
<<EOF
#include <stdlib.h>

#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0
#endif
#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif

#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
#endif

int
main(void)
{
  int passive, gaierr, inet4 = 0, inet6 = 0;
  struct addrinfo hints, *ai, *aitop;
  char straddr[INET6_ADDRSTRLEN], strport[16];
#ifdef _WIN32
  WSADATA retdata;

  WSAStartup(MAKEWORD(2, 0), &retdata);
#endif

  for (passive = 0; passive <= 1; passive++) {
    memset(&hints, 0, sizeof(hints));
    hints.ai_family = AF_UNSPEC;
    hints.ai_protocol = IPPROTO_TCP;
    hints.ai_flags = passive ? AI_PASSIVE : 0;
    hints.ai_socktype = SOCK_STREAM;
    if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
      (void)gai_strerror(gaierr);
      goto bad;
    }
    for (ai = aitop; ai; ai = ai->ai_next) {
      if (ai->ai_family == AF_LOCAL) continue;
      if (ai->ai_addr == NULL)
        goto bad;
#if defined(_AIX)
      if (ai->ai_family == AF_INET6 && passive) {
        inet6++;
        continue;
      }
      ai->ai_addr->sa_len = ai->ai_addrlen;
      ai->ai_addr->sa_family = ai->ai_family;
#endif
      if (ai->ai_addrlen == 0 ||
          getnameinfo(ai->ai_addr, ai->ai_addrlen,
                      straddr, sizeof(straddr), strport, sizeof(strport),
                      NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
        goto bad;
      }
      if (strcmp(strport, "54321") != 0) {
        goto bad;
      }
      switch (ai->ai_family) {
      case AF_INET:
        if (passive) {
          if (strcmp(straddr, "0.0.0.0") != 0) {
            goto bad;
          }
        } else {
          if (strcmp(straddr, "127.0.0.1") != 0) {
            goto bad;
          }
        }
        inet4++;
        break;
      case AF_INET6:
        if (passive) {
          if (strcmp(straddr, "::") != 0) {
            goto bad;
          }
        } else {
          if (strcmp(straddr, "::1") != 0) {
            goto bad;
          }
        }
        inet6++;
        break;
      case AF_UNSPEC:
        goto bad;
        break;
      default:
        /* another family support? */
        break;
      }
    }
  }

  if (!(inet4 == 0 || inet4 == 2))
    goto bad;
  if (!(inet6 == 0 || inet6 == 2))
    goto bad;

  if (aitop)
    freeaddrinfo(aitop);
  return EXIT_SUCCESS;

 bad:
  if (aitop)
    freeaddrinfo(aitop);
  return EXIT_FAILURE;
}
EOF
RECVMSG_WITH_MSG_PEEK_ALLOCATE_FD_TEST = 
<<'EOF'
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
    int ps[2], sv[2];
    int ret;
    ssize_t ss;
    int s_fd, r_fd;
    struct msghdr s_msg, r_msg;
    union {
        struct cmsghdr hdr;
        char dummy[CMSG_SPACE(sizeof(int))];
    } s_cmsg, r_cmsg;
    struct iovec s_iov, r_iov;
    char s_buf[1], r_buf[1];
    struct stat s_statbuf, r_statbuf;

    ret = pipe(ps);
    if (ret == -1) { perror("pipe"); exit(EXIT_FAILURE); }

    s_fd = ps[0];

    ret = socketpair(AF_UNIX, SOCK_DGRAM, 0, sv);
    if (ret == -1) { perror("socketpair"); exit(EXIT_FAILURE); }

    s_msg.msg_name = NULL;
    s_msg.msg_namelen = 0;
    s_msg.msg_iov = &s_iov;
    s_msg.msg_iovlen = 1;
    s_msg.msg_control = &s_cmsg;
    s_msg.msg_controllen = CMSG_SPACE(sizeof(int));;
    s_msg.msg_flags = 0;

    s_iov.iov_base = &s_buf;
    s_iov.iov_len = sizeof(s_buf);

    s_buf[0] = 'a';

    s_cmsg.hdr.cmsg_len = CMSG_LEN(sizeof(int));
    s_cmsg.hdr.cmsg_level = SOL_SOCKET;
    s_cmsg.hdr.cmsg_type = SCM_RIGHTS;
    memcpy(CMSG_DATA(&s_cmsg.hdr), (char *)&s_fd, sizeof(int));

    ss = sendmsg(sv[0], &s_msg, 0);
    if (ss == -1) { perror("sendmsg"); exit(EXIT_FAILURE); }

    r_msg.msg_name = NULL;
    r_msg.msg_namelen = 0;
    r_msg.msg_iov = &r_iov;
    r_msg.msg_iovlen = 1;
    r_msg.msg_control = &r_cmsg;
    r_msg.msg_controllen = CMSG_SPACE(sizeof(int));
    r_msg.msg_flags = 0;

    r_iov.iov_base = &r_buf;
    r_iov.iov_len = sizeof(r_buf);

    r_buf[0] = '0';

    memset(&r_cmsg, 0xff, CMSG_SPACE(sizeof(int)));

    ss = recvmsg(sv[1], &r_msg, MSG_PEEK);
    if (ss == -1) { perror("recvmsg"); exit(EXIT_FAILURE); }

    if (ss != 1) {
        fprintf(stderr, "unexpected return value from recvmsg: %ld\n", (long)ss);
        exit(EXIT_FAILURE);
    }
    if (r_buf[0] != 'a') {
        fprintf(stderr, "unexpected return data from recvmsg: 0x%02x\n", r_buf[0]);
        exit(EXIT_FAILURE);
    }

    if (r_msg.msg_controllen < CMSG_LEN(sizeof(int))) {
        fprintf(stderr, "unexpected: r_msg.msg_controllen < CMSG_LEN(sizeof(int)) not hold: %ld\n",
                (long)r_msg.msg_controllen);
        exit(EXIT_FAILURE);
    }
    if (r_cmsg.hdr.cmsg_len < CMSG_LEN(sizeof(int))) {
        fprintf(stderr, "unexpected: r_cmsg.hdr.cmsg_len < CMSG_LEN(sizeof(int)) not hold: %ld\n",
                (long)r_cmsg.hdr.cmsg_len);
        exit(EXIT_FAILURE);
    }
    memcpy((char *)&r_fd, CMSG_DATA(&r_cmsg.hdr), sizeof(int));

    if (r_fd < 0) {
        fprintf(stderr, "negative r_fd: %d\n", r_fd);
        exit(EXIT_FAILURE);
    }

    if (r_fd == s_fd) {
        fprintf(stderr, "r_fd and s_fd is same: %d\n", r_fd);
        exit(EXIT_FAILURE);
    }

    ret = fstat(s_fd, &s_statbuf);
    if (ret == -1) { perror("fstat(s_fd)"); exit(EXIT_FAILURE); }

    ret = fstat(r_fd, &r_statbuf);
    if (ret == -1) { perror("fstat(r_fd)"); exit(EXIT_FAILURE); }

    if (s_statbuf.st_dev != r_statbuf.st_dev ||
        s_statbuf.st_ino != r_statbuf.st_ino) {
        fprintf(stderr, "dev/ino doesn't match: s_fd:%ld/%ld r_fd:%ld/%ld\n",
                (long)s_statbuf.st_dev, (long)s_statbuf.st_ino,
                (long)r_statbuf.st_dev, (long)r_statbuf.st_ino);
        exit(EXIT_FAILURE);
    }

    return EXIT_SUCCESS;
}
EOF
C_ESC = 
{
  "\\" => "\\\\",
  '"' => '\"',
  "\n" => '\n',
}
C_ESC_PAT = 
Regexp.union(*C_ESC.keys)
COMMENTS = 
Hash.new { |h, name| h[name] = name }
DEFS = 
h.to_a
NAME_TO_INT_DEFS = 
[]
INTERN_DEFS = 
[]

Instance Method Summary collapse

Instance Method Details

#c_str(str) ⇒ Object 



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# File 'mkconstants.rb', line 32

def c_str(str)
  '"' + str.gsub(C_ESC_PAT) {|s| C_ESC[s]} + '"'
end

#def_intern(func_name, pat, prefix_optional = nil) ⇒ Object 



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# File 'mkconstants.rb', line 243

def def_intern(func_name, pat, prefix_optional=nil)
  prefix_pat = nil
  if prefix_optional
    if Regexp === prefix_optional
      prefix_pat = prefix_optional
    else
      prefix_pat = /\A#{Regexp.escape prefix_optional}/
    end
  end
  hash_var = "#{func_name}_hash"
  vardef = "static st_table *#{hash_var};"
  gen_hash = gen_int_to_name_hash(hash_var, pat, prefix_pat)
  decl = gen_int_to_name_decl(func_name, hash_var)
  func = gen_int_to_name_func(func_name, hash_var)
  INTERN_DEFS << [vardef, gen_hash, decl, func]
end

#def_name_to_int(funcname, pat, prefix_optional, guard = nil) ⇒ Object 



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# File 'mkconstants.rb', line 200

def def_name_to_int(funcname, pat, prefix_optional, guard=nil)
  decl = gen_name_to_int_decl(funcname, pat, prefix_optional, guard)
  func = gen_name_to_int_func(funcname, pat, prefix_optional, guard)
  NAME_TO_INT_DEFS << [decl, func]
end

#each_const ⇒ Object 



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# File 'mkconstants.rb', line 58

def each_const
  DEFS.each {|name, default_value|
    guard = nil
    if /\A(AF_INET6|PF_INET6|IPV6_.*)\z/ =~ name
      # IPv6 is not supported although AF_INET6 is defined on mingw
      guard = "defined(INET6)"
    end
    yield guard, name, default_value
  }
end

#each_name(pat) ⇒ Object 



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# File 'mkconstants.rb', line 69

def each_name(pat)
  DEFS.each {|name, default_value|
    next if pat !~ name
    yield name
  }
end

#each_names_with_len(pat, prefix_optional = nil) ⇒ Object 



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# File 'mkconstants.rb', line 126

def each_names_with_len(pat, prefix_optional=nil)
  h = {}
  DEFS.each {|name, default_value|
    next if pat !~ name
    (h[name.length] ||= []) << [name, name]
  }
  if prefix_optional
    if Regexp === prefix_optional
      prefix_pat = prefix_optional
    else
      prefix_pat = /\A#{Regexp.escape prefix_optional}/
    end
    DEFS.each {|const, default_value|
      next if pat !~ const
      next if prefix_pat !~ const
      name = $'
      (h[name.length] ||= []) << [name, const]
    }
  end
  hh = {}
  h.each {|len, pairs|
    pairs.each {|name, const|
      raise "name crash: #{name}" if hh[name]
      hh[name] = true
    }
  }
  h.keys.sort.each {|len|
    yield h[len], len
  }
end

#reverse_each_name(pat) ⇒ Object 



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# File 'mkconstants.rb', line 119

def reverse_each_name(pat)
  DEFS.reverse_each {|name, default_value|
    next if pat !~ name
    yield name
  }
end

#reverse_each_name_with_prefix_optional(pat, prefix_pat) ⇒ Object 



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# File 'mkconstants.rb', line 206

def reverse_each_name_with_prefix_optional(pat, prefix_pat)
  reverse_each_name(pat) {|n|
    yield n, n
  }
  if prefix_pat
    reverse_each_name(pat) {|n|
      next if prefix_pat !~ n
      yield n, $'
    }
  end
end

#test_recvmsg_with_msg_peek_creates_fds(headers) ⇒ Object 



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# File 'extconf.rb', line 246

def test_recvmsg_with_msg_peek_creates_fds(headers)
  case RUBY_PLATFORM
  when /linux/
    # Linux 2.6.38 allocate fds by recvmsg with MSG_PEEK.
    close_fds = true
  when /bsd|darwin/
    # FreeBSD 8.2.0, NetBSD 5 and MacOS X Snow Leopard doesn't
    # allocate fds by recvmsg with MSG_PEEK.
    # [ruby-dev:44189]
    # http://bugs.ruby-lang.org/issues/5075
    close_fds = false
  when /cygwin/
    # Cygwin doesn't support fd passing.
    # http://cygwin.com/ml/cygwin/2003-09/msg01808.html
    close_fds = false
  else
    close_fds = nil
  end
  if !CROSS_COMPILING
    if checking_for("recvmsg() with MSG_PEEK allocate file descriptors") {
        try_run(cpp_include(headers) + RECVMSG_WITH_MSG_PEEK_ALLOCATE_FD_TEST)
       }
      if close_fds == false
        warn "unexpected fd-passing recvmsg() with MSG_PEEK behavor on #{RUBY_PLATFORM}: fd allocation unexpected."
      elsif close_fds == nil
        puts "info: #{RUBY_PLATFORM} recvmsg() with MSG_PEEK allocates fds on fd-passing."
      end
      close_fds = true
    else
      if close_fds == true
        warn "unexpected fd-passing recvmsg() with MSG_PEEK behavor on #{RUBY_PLATFORM}: fd allocation expected."
      elsif close_fds == nil
        puts "info: #{RUBY_PLATFORM}: recvmsg() with MSG_PEEK doesn't allocates fds on fd-passing."
      end
      close_fds = false
    end
  end
  if close_fds == nil
    abort <<EOS
Fatal: cannot test fd-passing recvmsg() with MSG_PEEK behavor
because cross-compilation for #{RUBY_PLATFORM}.
If recvmsg() with MSG_PEEK allocates fds on fd passing:
--enable-close-fds-by-recvmsg-with-peek
If recvmsg() with MSG_PEEK doesn't allocate fds on fd passing:
--disable-close-fds-by-recvmsg-with-peek
EOS
  end
  close_fds
end