--- /dev/null
+/* Copyright (C) 2001, 2006 Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+\f
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "libguile/__scm.h"
+#include "libguile/modules.h"
+#include "libguile/numbers.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+
+#ifndef PATH_MAX
+#define PATH_MAX 255
+#endif
+
+#include "win32-socket.h"
+
+/* Winsock API error description structure. The error description is
+ necessary because there is no error list available. */
+typedef struct
+{
+ int error; /* Error code. */
+ char *str; /* Error description. */
+ int replace; /* Possible error code replacement. */
+ char *replace_str; /* Replacement symbol. */
+ char *correct_str; /* Original symbol. */
+}
+socket_error_t;
+
+#define FILE_ETC_SERVICES "services"
+#define ENVIRON_ETC_SERVICES "SERVICES"
+#define FILE_ETC_NETWORKS "networks"
+#define ENVIRON_ETC_NETWORKS "NETWORKS"
+#define FILE_ETC_PROTOCOLS "protocol"
+#define ENVIRON_ETC_PROTOCOLS "PROTOCOLS"
+#define MAX_NAMLEN 256
+#define MAX_ALIASES 4
+
+/* Internal structure for a thread's M$-Windows servent interface. */
+typedef struct
+{
+ FILE *fd; /* Current file. */
+ char file[PATH_MAX]; /* File name. */
+ struct servent ent; /* Return value. */
+ char name[MAX_NAMLEN]; /* Service name. */
+ char proto[MAX_NAMLEN]; /* Protocol name. */
+ char alias[MAX_ALIASES][MAX_NAMLEN]; /* All aliases. */
+ char *aliases[MAX_ALIASES]; /* Alias pointers. */
+ int port; /* Network port. */
+}
+scm_i_servent_t;
+
+static scm_i_servent_t scm_i_servent;
+
+/* Internal structure for a thread's M$-Windows protoent interface. */
+typedef struct
+{
+ FILE *fd; /* Current file. */
+ char file[PATH_MAX]; /* File name. */
+ struct protoent ent; /* Return value. */
+ char name[MAX_NAMLEN]; /* Protocol name. */
+ char alias[MAX_ALIASES][MAX_NAMLEN]; /* All aliases. */
+ char *aliases[MAX_ALIASES]; /* Alias pointers. */
+ int proto; /* Protocol number. */
+}
+scm_i_protoent_t;
+
+static scm_i_protoent_t scm_i_protoent;
+
+/* Define replacement symbols for most of the WSA* error codes. */
+#ifndef EWOULDBLOCK
+# define EWOULDBLOCK WSAEWOULDBLOCK
+#endif
+#ifndef EINPROGRESS
+# define EINPROGRESS WSAEINPROGRESS
+#endif
+#ifndef EALREADY
+# define EALREADY WSAEALREADY
+#endif
+#ifndef EDESTADDRREQ
+# define EDESTADDRREQ WSAEDESTADDRREQ
+#endif
+#ifndef EMSGSIZE
+# define EMSGSIZE WSAEMSGSIZE
+#endif
+#ifndef EPROTOTYPE
+# define EPROTOTYPE WSAEPROTOTYPE
+#endif
+#ifndef ENOTSOCK
+# define ENOTSOCK WSAENOTSOCK
+#endif
+#ifndef ENOPROTOOPT
+# define ENOPROTOOPT WSAENOPROTOOPT
+#endif
+#ifndef EPROTONOSUPPORT
+# define EPROTONOSUPPORT WSAEPROTONOSUPPORT
+#endif
+#ifndef ESOCKTNOSUPPORT
+# define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
+#endif
+#ifndef EOPNOTSUPP
+# define EOPNOTSUPP WSAEOPNOTSUPP
+#endif
+#ifndef EPFNOSUPPORT
+# define EPFNOSUPPORT WSAEPFNOSUPPORT
+#endif
+#ifndef EAFNOSUPPORT
+# define EAFNOSUPPORT WSAEAFNOSUPPORT
+#endif
+#ifndef EADDRINUSE
+# define EADDRINUSE WSAEADDRINUSE
+#endif
+#ifndef EADDRNOTAVAIL
+# define EADDRNOTAVAIL WSAEADDRNOTAVAIL
+#endif
+#ifndef ENETDOWN
+# define ENETDOWN WSAENETDOWN
+#endif
+#ifndef ENETUNREACH
+# define ENETUNREACH WSAENETUNREACH
+#endif
+#ifndef ENETRESET
+# define ENETRESET WSAENETRESET
+#endif
+#ifndef ECONNABORTED
+# define ECONNABORTED WSAECONNABORTED
+#endif
+#ifndef ECONNRESET
+# define ECONNRESET WSAECONNRESET
+#endif
+#ifndef ENOBUFS
+# define ENOBUFS WSAENOBUFS
+#endif
+#ifndef EISCONN
+# define EISCONN WSAEISCONN
+#endif
+#ifndef ENOTCONN
+# define ENOTCONN WSAENOTCONN
+#endif
+#ifndef ESHUTDOWN
+# define ESHUTDOWN WSAESHUTDOWN
+#endif
+#ifndef ETOOMANYREFS
+# define ETOOMANYREFS WSAETOOMANYREFS
+#endif
+#ifndef ETIMEDOUT
+# define ETIMEDOUT WSAETIMEDOUT
+#endif
+#ifndef ECONNREFUSED
+# define ECONNREFUSED WSAECONNREFUSED
+#endif
+#ifndef ELOOP
+# define ELOOP WSAELOOP
+#endif
+#ifndef EHOSTDOWN
+# define EHOSTDOWN WSAEHOSTDOWN
+#endif
+#ifndef EHOSTUNREACH
+# define EHOSTUNREACH WSAEHOSTUNREACH
+#endif
+#ifndef EPROCLIM
+# define EPROCLIM WSAEPROCLIM
+#endif
+#ifndef EUSERS
+# define EUSERS WSAEUSERS
+#endif
+#ifndef EDQUOT
+# define EDQUOT WSAEDQUOT
+#endif
+#ifndef ESTALE
+# define ESTALE WSAESTALE
+#endif
+#ifndef EREMOTE
+# define EREMOTE WSAEREMOTE
+#endif
+
+/* List of error structures. */
+static socket_error_t socket_errno [] = {
+ /* 000 */ { 0, NULL, 0, NULL, NULL },
+ /* 001 */ { 0, NULL, 0, NULL, NULL },
+ /* 002 */ { 0, NULL, 0, NULL, NULL },
+ /* 003 */ { 0, NULL, 0, NULL, NULL },
+ /* 004 */ { WSAEINTR, "Interrupted function call", EINTR, NULL, "WSAEINTR" },
+ /* 005 */ { 0, NULL, 0, NULL, NULL },
+ /* 006 */ { 0, NULL, 0, NULL, NULL },
+ /* 007 */ { 0, NULL, 0, NULL, NULL },
+ /* 008 */ { 0, NULL, 0, NULL, NULL },
+ /* 009 */ { WSAEBADF, "Bad file number", EBADF, NULL, "WSAEBADF" },
+ /* 010 */ { 0, NULL, 0, NULL, NULL },
+ /* 011 */ { 0, NULL, 0, NULL, NULL },
+ /* 012 */ { 0, NULL, 0, NULL, NULL },
+ /* 013 */ { WSAEACCES, "Permission denied", EACCES, NULL, "WSAEACCES" },
+ /* 014 */ { WSAEFAULT, "Bad address", EFAULT, NULL, "WSAEFAULT" },
+ /* 015 */ { 0, NULL, 0, NULL, NULL },
+ /* 016 */ { 0, NULL, 0, NULL, NULL },
+ /* 017 */ { 0, NULL, 0, NULL, NULL },
+ /* 018 */ { 0, NULL, 0, NULL, NULL },
+ /* 019 */ { 0, NULL, 0, NULL, NULL },
+ /* 020 */ { 0, NULL, 0, NULL, NULL },
+ /* 021 */ { 0, NULL, 0, NULL, NULL },
+ /* 022 */ { WSAEINVAL, "Invalid argument", EINVAL, NULL, "WSAEINVAL" },
+ /* 023 */ { 0, NULL, 0, NULL, NULL },
+ /* 024 */ { WSAEMFILE, "Too many open files", EMFILE, NULL, "WSAEMFILE" },
+ /* 025 */ { 0, NULL, 0, NULL, NULL },
+ /* 026 */ { 0, NULL, 0, NULL, NULL },
+ /* 027 */ { 0, NULL, 0, NULL, NULL },
+ /* 028 */ { 0, NULL, 0, NULL, NULL },
+ /* 029 */ { 0, NULL, 0, NULL, NULL },
+ /* 030 */ { 0, NULL, 0, NULL, NULL },
+ /* 031 */ { 0, NULL, 0, NULL, NULL },
+ /* 032 */ { 0, NULL, 0, NULL, NULL },
+ /* 033 */ { 0, NULL, 0, NULL, NULL },
+ /* 034 */ { 0, NULL, 0, NULL, NULL },
+ /* 035 */ { WSAEWOULDBLOCK, "Resource temporarily unavailable",
+ EWOULDBLOCK, "EWOULDBLOCK", "WSAEWOULDBLOCK" },
+ /* 036 */ { WSAEINPROGRESS, "Operation now in progress",
+ EINPROGRESS, "EINPROGRESS", "WSAEINPROGRESS" },
+ /* 037 */ { WSAEALREADY, "Operation already in progress",
+ EALREADY, "EALREADY", "WSAEALREADY" },
+ /* 038 */ { WSAENOTSOCK, "Socket operation on non-socket",
+ ENOTSOCK, "ENOTSOCK", "WSAENOTSOCK"},
+ /* 039 */ { WSAEDESTADDRREQ, "Destination address required",
+ EDESTADDRREQ, "EDESTADDRREQ", "WSAEDESTADDRREQ" },
+ /* 040 */ { WSAEMSGSIZE, "Message too long",
+ EMSGSIZE, "EMSGSIZE", "WSAEMSGSIZE" },
+ /* 041 */ { WSAEPROTOTYPE, "Protocol wrong type for socket",
+ EPROTOTYPE, "EPROTOTYPE", "WSAEPROTOTYPE" },
+ /* 042 */ { WSAENOPROTOOPT, "Bad protocol option",
+ ENOPROTOOPT, "ENOPROTOOPT", "WSAENOPROTOOPT" },
+ /* 043 */ { WSAEPROTONOSUPPORT, "Protocol not supported",
+ EPROTONOSUPPORT, "EPROTONOSUPPORT", "WSAEPROTONOSUPPORT" },
+ /* 044 */ { WSAESOCKTNOSUPPORT, "Socket type not supported",
+ ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT", "WSAESOCKTNOSUPPORT" },
+ /* 045 */ { WSAEOPNOTSUPP, "Operation not supported",
+ EOPNOTSUPP, "EOPNOTSUPP", "WSAEOPNOTSUPP" },
+ /* 046 */ { WSAEPFNOSUPPORT, "Protocol family not supported",
+ EPFNOSUPPORT, "EPFNOSUPPORT", "WSAEPFNOSUPPORT" },
+ /* 047 */ { WSAEAFNOSUPPORT,
+ "Address family not supported by protocol family",
+ EAFNOSUPPORT, "EAFNOSUPPORT", "WSAEAFNOSUPPORT" },
+ /* 048 */ { WSAEADDRINUSE, "Address already in use",
+ EADDRINUSE, "EADDRINUSE", "WSAEADDRINUSE" },
+ /* 049 */ { WSAEADDRNOTAVAIL, "Cannot assign requested address",
+ EADDRNOTAVAIL, "EADDRNOTAVAIL", "WSAEADDRNOTAVAIL" },
+ /* 050 */ { WSAENETDOWN, "Network is down",
+ ENETDOWN, "ENETDOWN", "WSAENETDOWN" },
+ /* 051 */ { WSAENETUNREACH, "Network is unreachable",
+ ENETUNREACH, "ENETUNREACH", "WSAENETUNREACH" },
+ /* 052 */ { WSAENETRESET, "Network dropped connection on reset",
+ ENETRESET, "ENETRESET", "WSAENETRESET" },
+ /* 053 */ { WSAECONNABORTED, "Software caused connection abort",
+ ECONNABORTED, "ECONNABORTED", "WSAECONNABORTED" },
+ /* 054 */ { WSAECONNRESET, "Connection reset by peer",
+ ECONNRESET, "ECONNRESET", "WSAECONNRESET" },
+ /* 055 */ { WSAENOBUFS, "No buffer space available",
+ ENOBUFS, "ENOBUFS", "WSAENOBUFS" },
+ /* 056 */ { WSAEISCONN, "Socket is already connected",
+ EISCONN, "EISCONN", "WSAEISCONN" },
+ /* 057 */ { WSAENOTCONN, "Socket is not connected",
+ ENOTCONN, "ENOTCONN", "WSAENOTCONN" },
+ /* 058 */ { WSAESHUTDOWN, "Cannot send after socket shutdown",
+ ESHUTDOWN, "ESHUTDOWN", "WSAESHUTDOWN" },
+ /* 059 */ { WSAETOOMANYREFS, "Too many references; can't splice",
+ ETOOMANYREFS, "ETOOMANYREFS", "WSAETOOMANYREFS" },
+ /* 060 */ { WSAETIMEDOUT, "Connection timed out",
+ ETIMEDOUT, "ETIMEDOUT", "WSAETIMEDOUT" },
+ /* 061 */ { WSAECONNREFUSED, "Connection refused",
+ ECONNREFUSED, "ECONNREFUSED", "WSAECONNREFUSED" },
+ /* 062 */ { WSAELOOP, "Too many levels of symbolic links",
+ ELOOP, "ELOOP", "WSAELOOP" },
+ /* 063 */ { WSAENAMETOOLONG, "File name too long",
+ ENAMETOOLONG, NULL, "WSAENAMETOOLONG" },
+ /* 064 */ { WSAEHOSTDOWN, "Host is down",
+ EHOSTDOWN, "EHOSTDOWN", "WSAEHOSTDOWN" },
+ /* 065 */ { WSAEHOSTUNREACH, "No route to host",
+ EHOSTUNREACH, "EHOSTUNREACH", "WSAEHOSTUNREACH" },
+ /* 066 */ { WSAENOTEMPTY, "Directory not empty",
+ ENOTEMPTY, NULL, "WSAENOTEMPTY" },
+ /* 067 */ { WSAEPROCLIM, "Too many processes",
+ EPROCLIM, "EPROCLIM", "WSAEPROCLIM" },
+ /* 068 */ { WSAEUSERS, "Too many users",
+ EUSERS, "EUSERS", "WSAEUSERS" },
+ /* 069 */ { WSAEDQUOT, "Disc quota exceeded",
+ EDQUOT, "EDQUOT", "WSAEDQUOT" },
+ /* 070 */ { WSAESTALE, "Stale NFS file handle",
+ ESTALE, "ESTALE", "WSAESTALE" },
+ /* 071 */ { WSAEREMOTE, "Too many levels of remote in path",
+ EREMOTE, "EREMOTE", "WSAEREMOTE" },
+ /* 072 */ { 0, NULL, 0, NULL, NULL },
+ /* 073 */ { 0, NULL, 0, NULL, NULL },
+ /* 074 */ { 0, NULL, 0, NULL, NULL },
+ /* 075 */ { 0, NULL, 0, NULL, NULL },
+ /* 076 */ { 0, NULL, 0, NULL, NULL },
+ /* 077 */ { 0, NULL, 0, NULL, NULL },
+ /* 078 */ { 0, NULL, 0, NULL, NULL },
+ /* 079 */ { 0, NULL, 0, NULL, NULL },
+ /* 080 */ { 0, NULL, 0, NULL, NULL },
+ /* 081 */ { 0, NULL, 0, NULL, NULL },
+ /* 082 */ { 0, NULL, 0, NULL, NULL },
+ /* 083 */ { 0, NULL, 0, NULL, NULL },
+ /* 084 */ { 0, NULL, 0, NULL, NULL },
+ /* 085 */ { 0, NULL, 0, NULL, NULL },
+ /* 086 */ { 0, NULL, 0, NULL, NULL },
+ /* 087 */ { 0, NULL, 0, NULL, NULL },
+ /* 088 */ { 0, NULL, 0, NULL, NULL },
+ /* 089 */ { 0, NULL, 0, NULL, NULL },
+ /* 090 */ { 0, NULL, 0, NULL, NULL },
+ /* 091 */ { WSASYSNOTREADY, "Network subsystem is unavailable",
+ 0, NULL, "WSASYSNOTREADY" },
+ /* 092 */ { WSAVERNOTSUPPORTED, "WINSOCK.DLL version out of range",
+ 0, NULL, "WSAVERNOTSUPPORTED" },
+ /* 093 */ { WSANOTINITIALISED, "Successful WSAStartup not yet performed",
+ 0, NULL, "WSANOTINITIALISED" },
+ /* 094 */ { 0, NULL, 0, NULL, NULL },
+ /* 095 */ { 0, NULL, 0, NULL, NULL },
+ /* 096 */ { 0, NULL, 0, NULL, NULL },
+ /* 097 */ { 0, NULL, 0, NULL, NULL },
+ /* 098 */ { 0, NULL, 0, NULL, NULL },
+ /* 099 */ { 0, NULL, 0, NULL, NULL },
+ /* 100 */ { 0, NULL, 0, NULL, NULL },
+ /* 101 */ { WSAEDISCON, "Graceful shutdown in progress",
+ 0, NULL, "WSAEDISCON" },
+ /* 102 */ { WSAENOMORE, "No more services",
+ 0, NULL, "WSAENOMORE" },
+ /* 103 */ { WSAECANCELLED, "Service lookup cancelled",
+ 0, NULL, "WSAECANCELLED" },
+ /* 104 */ { WSAEINVALIDPROCTABLE, "Invalid procedure call table",
+ 0, NULL, "WSAEINVALIDPROCTABLE" },
+ /* 105 */ { WSAEINVALIDPROVIDER, "Invalid service provider",
+ 0, NULL, "WSAEINVALIDPROVIDER" },
+ /* 106 */ { WSAEPROVIDERFAILEDINIT, "Service provider failure",
+ 0, NULL, "WSAEPROVIDERFAILEDINIT" },
+ /* 107 */ { WSASYSCALLFAILURE, "System call failed",
+ 0, NULL, "WSASYSCALLFAILURE" },
+ /* 108 */ { WSASERVICE_NOT_FOUND, "No such service",
+ 0, NULL, "WSASERVICE_NOT_FOUND" },
+ /* 109 */ { WSATYPE_NOT_FOUND, "Class not found",
+ 0, NULL, "WSATYPE_NOT_FOUND" },
+ /* 110 */ { WSA_E_NO_MORE, "No more services",
+ 0, NULL, "WSA_E_NO_MORE" },
+ /* 111 */ { WSA_E_CANCELLED, "Service lookup cancelled",
+ 0, NULL, "WSA_E_CANCELLED" },
+ /* 112 */ { WSAEREFUSED, "Database query refused",
+ 0, NULL, "WSAEREFUSED" },
+ /* end */ { -1, NULL, -1, NULL, NULL }
+};
+
+/* Extended list of error structures. */
+static socket_error_t socket_h_errno [] = {
+ /* 000 */ { 0, NULL, 0, NULL, NULL },
+ /* 001 */ { WSAHOST_NOT_FOUND, "Host not found",
+ HOST_NOT_FOUND, "HOST_NOT_FOUND", "WSAHOST_NOT_FOUND" },
+ /* 002 */ { WSATRY_AGAIN, "Non-authoritative host not found",
+ TRY_AGAIN, "TRY_AGAIN", "WSATRY_AGAIN" },
+ /* 003 */ { WSANO_RECOVERY, "This is a non-recoverable error",
+ NO_RECOVERY, "NO_RECOVERY", "WSANO_RECOVERY" },
+ /* 004 */ { WSANO_DATA, "Valid name, no data record of requested type",
+ NO_DATA, "NO_DATA", "WSANO_DATA" },
+ /* 005 */ { WSANO_ADDRESS, "No address, look for MX record",
+ NO_ADDRESS, "NO_ADDRESS", "WSANO_ADDRESS" },
+ /* end */ { -1, NULL, -1, NULL, NULL }
+};
+
+/* Returns the result of @code{WSAGetLastError()}. */
+int
+scm_i_socket_errno (void)
+{
+ return WSAGetLastError ();
+}
+
+/* Returns a valid error message for Winsock-API error codes obtained via
+ @code{WSAGetLastError()} or NULL otherwise. */
+char *
+scm_i_socket_strerror (int error)
+{
+ if (error >= WSABASEERR && error <= (WSABASEERR + 112))
+ return socket_errno[error - WSABASEERR].str;
+ else if (error >= (WSABASEERR + 1000) && error <= (WSABASEERR + 1005))
+ return socket_h_errno[error - (WSABASEERR + 1000)].str;
+ return NULL;
+}
+
+/* Constructs a valid filename for the given file @var{file} in the M$-Windows
+ directory. This is usually the default location for the network files. */
+char *
+scm_i_socket_filename (char *file)
+{
+ static char dir[PATH_MAX];
+ int len = PATH_MAX;
+
+ len = GetWindowsDirectory (dir, len);
+ if (dir[len - 1] != '\\')
+ strcat (dir, "\\");
+ strcat (dir, file);
+ return dir;
+}
+
+/* Removes comments and white spaces at end of line and returns a pointer
+ to the end of the line. */
+static char *
+scm_i_socket_uncomment (char *line)
+{
+ char *end;
+
+ if ((end = strchr (line, '#')) != NULL)
+ *end-- = '\0';
+ else
+ {
+ end = line + strlen (line) - 1;
+ while (end > line && (*end == '\r' || *end == '\n'))
+ *end-- = '\0';
+ }
+ while (end > line && isspace (*end))
+ *end-- = '\0';
+
+ return end;
+}
+
+/* The getservent() function reads the next line from the file `/etc/services'
+ and returns a structure servent containing the broken out fields from the
+ line. The `/etc/services' file is opened if necessary. */
+struct servent *
+getservent (void)
+{
+ char line[MAX_NAMLEN], *end, *p;
+ int done = 0, i, n, a;
+ struct servent *e = NULL;
+
+ /* Ensure a open file. */
+ if (scm_i_servent.fd == NULL || feof (scm_i_servent.fd))
+ {
+ setservent (1);
+ if (scm_i_servent.fd == NULL)
+ return NULL;
+ }
+
+ while (!done)
+ {
+ /* Get new line. */
+ if (fgets (line, MAX_NAMLEN, scm_i_servent.fd) != NULL)
+ {
+ end = scm_i_socket_uncomment (line);
+
+ /* Scan the line. */
+ if ((i = sscanf (line, "%s %d/%s%n",
+ scm_i_servent.name,
+ &scm_i_servent.port,
+ scm_i_servent.proto, &n)) != 3)
+ continue;
+
+ /* Scan the remaining aliases. */
+ p = line + n;
+ for (a = 0; a < MAX_ALIASES && p < end && i != -1 && n > 1;
+ a++, p += n)
+ i = sscanf (p, "%s%n", scm_i_servent.alias[a], &n);
+
+ /* Prepare the return value. */
+ e = &scm_i_servent.ent;
+ e->s_name = scm_i_servent.name;
+ e->s_port = htons (scm_i_servent.port);
+ e->s_proto = scm_i_servent.proto;
+ e->s_aliases = scm_i_servent.aliases;
+ scm_i_servent.aliases[a] = NULL;
+ while (a--)
+ scm_i_servent.aliases[a] = scm_i_servent.alias[a];
+ done = 1;
+ }
+ else
+ break;
+ }
+ return done ? e : NULL;
+}
+
+/* The setservent() function opens and rewinds the `/etc/services' file.
+ This file can be set from outside with an environment variable specifying
+ the file name. */
+void
+setservent (int stayopen)
+{
+ char *file = NULL;
+
+ endservent ();
+ if ((file = getenv (ENVIRON_ETC_SERVICES)) != NULL)
+ strcpy (scm_i_servent.file, file);
+ else if ((file = scm_i_socket_filename (FILE_ETC_SERVICES)) != NULL)
+ strcpy (scm_i_servent.file, file);
+ scm_i_servent.fd = fopen (scm_i_servent.file, "rt");
+}
+
+/* The endservent() function closes the `/etc/services' file. */
+void
+endservent (void)
+{
+ if (scm_i_servent.fd != NULL)
+ {
+ fclose (scm_i_servent.fd);
+ scm_i_servent.fd = NULL;
+ }
+}
+
+/* The getprotoent() function reads the next line from the file
+ `/etc/protocols' and returns a structure protoent containing the broken
+ out fields from the line. The `/etc/protocols' file is opened if
+ necessary. */
+struct protoent *
+getprotoent (void)
+{
+ char line[MAX_NAMLEN], *end, *p;
+ int done = 0, i, n, a;
+ struct protoent *e = NULL;
+
+ /* Ensure a open file. */
+ if (scm_i_protoent.fd == NULL || feof (scm_i_protoent.fd))
+ {
+ setprotoent (1);
+ if (scm_i_protoent.fd == NULL)
+ return NULL;
+ }
+
+ while (!done)
+ {
+ /* Get new line. */
+ if (fgets (line, MAX_NAMLEN, scm_i_protoent.fd) != NULL)
+ {
+ end = scm_i_socket_uncomment (line);
+
+ /* Scan the line. */
+ if ((i = sscanf (line, "%s %d%n",
+ scm_i_protoent.name,
+ &scm_i_protoent.proto, &n)) != 2)
+ continue;
+
+ /* Scan the remaining aliases. */
+ p = line + n;
+ for (a = 0; a < MAX_ALIASES && p < end && i != -1 && n > 1;
+ a++, p += n)
+ i = sscanf (p, "%s%n", scm_i_protoent.alias[a], &n);
+
+ /* Prepare the return value. */
+ e = &scm_i_protoent.ent;
+ e->p_name = scm_i_protoent.name;
+ e->p_proto = scm_i_protoent.proto;
+ e->p_aliases = scm_i_protoent.aliases;
+ scm_i_protoent.aliases[a] = NULL;
+ while (a--)
+ scm_i_protoent.aliases[a] = scm_i_protoent.alias[a];
+ done = 1;
+ }
+ else
+ break;
+ }
+ return done ? e : NULL;
+}
+
+/* The setprotoent() function opens and rewinds the `/etc/protocols' file.
+ As in setservent() the user can modify the location of the file using
+ an environment variable. */
+void
+setprotoent (int stayopen)
+{
+ char *file = NULL;
+
+ endprotoent ();
+ if ((file = getenv (ENVIRON_ETC_PROTOCOLS)) != NULL)
+ strcpy (scm_i_protoent.file, file);
+ else if ((file = scm_i_socket_filename (FILE_ETC_PROTOCOLS)) != NULL)
+ strcpy (scm_i_protoent.file, file);
+ scm_i_protoent.fd = fopen (scm_i_protoent.file, "rt");
+}
+
+/* The endprotoent() function closes `/etc/protocols'. */
+void
+endprotoent (void)
+{
+ if (scm_i_protoent.fd != NULL)
+ {
+ fclose (scm_i_protoent.fd);
+ scm_i_protoent.fd = NULL;
+ }
+}
+
+/* Define both the original and replacement error symbol is possible. Thus
+ the user is able to check symbolic errors after unsuccessful networking
+ function calls. */
+static void
+scm_socket_symbols_Win32 (socket_error_t * e)
+{
+ while (e->error != -1)
+ {
+ if (e->error)
+ {
+ if (e->correct_str)
+ scm_c_define (e->correct_str, scm_from_int (e->error));
+ if (e->replace && e->replace_str)
+ scm_c_define (e->replace_str, scm_from_int (e->replace));
+ }
+ e++;
+ }
+}
+
+/* Initialize Winsock API under M$-Windows. */
+void
+scm_i_init_socket_Win32 (void)
+{
+ scm_socket_symbols_Win32 (socket_errno);
+ scm_socket_symbols_Win32 (socket_h_errno);
+}
projects / lilypond.git / blobdiff