libwww/Library/src/wwwsys.html - view

File: [Public] / libwww / Library / src / wwwsys.html
Revision 2.39: download - view: text, annotated - select for diffs
Tue Mar 21 22:43:29 1995 UTC (29 years, 2 months ago) by frystyk
Branches: MAIN
CVS tags: v3/0, WindowsNT, HEAD

Last attempt before release

<HTML> <HEAD> <TITLE>System dependencies in the W3 library</TITLE> </HEAD> <BODY> <H1>System Dependencies</H1> <PRE> /* ** (c) COPYRIGHT CERN 1994. ** Please first read the full copyright statement in the file COPYRIGH. */ </PRE> System-system differences for TCP include files and macros. This file includes for each system the files necessary for network and file I/O. <P> This module is a part of the <A HREF="http://info.cern.ch/hypertext/WWW/Library/User/Guide/Guide.html"> Library of Common Code</A>. <H3>Authors</H3> <DL> <DT>TBL <DD> Tim Berners-Lee, W3 project, CERN, <timbl@info.cern.ch> <DT>EvA <DD> Eelco van Asperen <evas@cs.few.eur.nl> <DT>MA <DD> Marc Andreesen NCSA <DT>MD <DD> Mark Donszelmann <duns@vxcern.cern.ch> <DT>AT <DD> Aleksandar Totic <atotic@ncsa.uiuc.edu> <DT>SCW <DD> Susan C. Weber <sweber@kyle.eitech.com> <DT>HF <DD> Henrik Frystyk, <frystyk@dxcern.cern.ch> </DL> <H3>History:</H3> <DL> <DT>22 Feb 91 <DD> Written (TBL) as part of the WWW library. <DT>16 Jan 92 <DD> PC code from (EvA) <DT>22 Apr 93 <DD> Merged diffs bits from xmosaic release <DT>29 Apr 93 <DD> Windows/NT code from (SCW) <DT>29 Sep 93 <DD> VMS fixes (MD) </DL> <PRE> #ifndef TCP_H #define TCP_H </PRE> <H2>Default values</H2>These values may be reset and altered by system-specific sections later on. There is also a bunch of <A NAME="z5" HREF="#z2">defaults</A> at the end and a section for <A NAME="z11" HREF="#z10">ordinary BSD unix versions</A>. <PRE> #define SELECT /* Can handle >1 channel */ #define GOT_SYSTEM /* Can call shell with string */ #define GOT_PASSWD /* Can we use getpass() command */ </PRE> <HR> <A NAME="z1"><H1>Platform Specific Stuff</H1></A> Information below this line is specific for most platforms. See also <A NAME="z6" HREF="#z2">General Stuff</A> <H2>Macintosh - Think-C</H2> Think-C is one development environment on the Mac.<P> We recommend that you compile with 4-byte ints to be compatible with MPW C. We used Tom Milligan's s_socket library which was written for 4 byte int, and the MacTCP library assumes 4-byte int. <PRE> #ifdef THINK_C #undef GOT_SYSTEM #define DEBUG /* Can't put it on the CC command line */ #define NO_UNIX_IO /* getuid() missing */ #define NO_GETPID /* getpid() does not exist */ #define NO_GETWD /* getwd() does not exist */ #define NETCLOSE s_close /* Routine to close a TCP-IP socket */ #define NETREAD s_read /* Routine to read from a TCP-IP socket */ #define NETWRITE s_write /* Routine to write to a TCP-IP socket */ #define bind s_bind /* Funny names presumably to prevent clashes */ #define connect s_connect #define accept s_accept #define listen s_listen #define socket s_socket #define getsockname s_getsockname /* The function prototype checking is better than the include files */ extern s_close(int s); extern s_read(int s, char *buffer, int buflen); extern s_write(int s, const char *buffer, int buflen); extern bind(int s, struct sockaddr *name, int namelen); extern accept(int s, struct sockaddr *addr, int *addrlen); extern listen(int s, int qlen); extern connect(int s, struct sockaddr *addr, int addrlen); extern s_socket(int domain, int type, int protocol); extern s_getsockname(int s, struct sockaddr *name, int *namelen); extern struct hostent *gethostent(const char * name); extern unsigned long inet_addr(const char * name); #endif /* THINK_C */ </PRE> <H2>Macintosh - MPW</H2> MPW is one development environment on the Mac.<P> This entry was created by Aleksandar Totic (atotic@ncsa.uiuc.edu) this file is compatible with sockets package released by NCSA. One major conflict is that this library redefines write/read/etc as macros. In some of HTML code these macros get executed when they should not be. Such files should define NO_SOCKET_DEFS on top. This is a temporary hack. <PRE> #ifdef applec /* MPW */ #undef GOT_SYSTEM #define DEBUG /* Can't put it on the CC command line */ #define NO_UNIX_IO /* getuid() missing */ #define NO_GETPID /* getpid() does not exist */ #define NO_GETWD /* getwd() does not exist */ #define NETCLOSE s_close /* Routine to close a TCP-IP socket */ #define NETREAD s_read /* Routine to read from a TCP-IP socket */ #define NETWRITE s_write /* Routine to write to a TCP-IP socket */ #define _ANSI_SOURCE #define GUI #define LINEFEED 10 #define ANON_FTP_HOSTNAME #ifndef NO_SOCKET_DEFS #include <MacSockDefs.h> #endif /* NO_SOCKET_DEFS */ #include <socket.ext.h> #include <string.h> #endif /* applec MPW */ </PRE> <H2>Big Blue - the world of incompatibility</H2> IBM RS600</H2>On the IBM RS-6000, AIX is almost Unix. <P> <PRE> #ifdef _AIX #define AIX #endif #ifdef AIX #define unix #endif /* AIX 3.2 ** ------- */ #ifdef _IBMR2 #define USE_DIRENT /* sys V style directory open */ #endif </PRE> <H2>IBM VM-CMS, VM-XA Mainframes</H2> MVS is compiled as for VM. MVS has no unix-style I/O. The command line compile options seem to come across in lower case. <PRE> #ifdef mvs #define MVS #endif #ifdef MVS #define VM #endif #ifdef NEWLIB #pragma linkage(newlib,OS) /* Enables recursive NEWLIB */ #endif /* VM doesn't have a built-in predefined token, so we cheat: */ #ifndef VM #include <string.h> /* For bzero etc - not VM */ #endif /* Note: All include file names must have 8 chars max (+".h") ** ** Under VM, compile with "(DEF=VM,SHORT_NAMES,DEBUG)" ** ** Under MVS, compile with "NOMAR DEF(MVS)" to get rid of 72 char margin ** System include files TCPIP and COMMMAC neeed line number removal(!) */ #ifdef VM /* or MVS -- see above. */ #define GOT_PIPE /* Of sorts */ #define NOT_ASCII /* char type is not ASCII */ #define NO_UNIX_IO /* Unix I/O routines are not supported */ #define NO_GETPID /* getpid() does not exist */ #define NO_GETWD /* getwd() does not exist */ #ifndef SHORT_NAMES #define SHORT_NAMES /* 8 character uniqueness for globals */ #endif #include <manifest.h> #include <bsdtypes.h> #include <stdefs.h> #include <socket.h> #include <in.h> #include <inet.h> #include <netdb.h> #include <errno.h> /* independent */ extern char asciitoebcdic[], ebcdictoascii[]; #define TOASCII(c) (c=='\n' ? 10 : ebcdictoascii[c]) #define FROMASCII(c) (c== 10 ? '\n' : asciitoebcdic[c]) #include <bsdtime.h> #include <time.h> #include <string.h> #define INCLUDES_DONE #define TCP_INCLUDES_DONE #endif </PRE> <H2>IBM-PC running MS-DOS with SunNFS for TCP/IP</H2> This code thanks to Eelco van Asperen <evas@cs.few.eur.nl> <PRE> #ifdef PCNFS #include <sys/types.h> #include <string.h> #include <errno.h> /* independent */ #include <sys/time.h> /* independent */ #include <sys/stat.h> #include <fcntl.h> /* In place of sys/param and sys/file */ #define INCLUDES_DONE #define FD_SET(fd,pmask) (*(unsigned*)(pmask)) |= (1<<(fd)) #define FD_CLR(fd,pmask) (*(unsigned*)(pmask)) &= ~(1<<(fd)) #define FD_ZERO(pmask) (*(unsigned*)(pmask))=0 #define FD_ISSET(fd,pmask) (*(unsigned*)(pmask) & (1<<(fd))) #define NO_GROUPS #endif /* PCNFS */ </PRE> <H2>PC running Windows (16-bit)</H2> Help provided by Susan C. Weber <sweber@kyle.eitech.com>, Paul Hounslow <P.M.Hounslow@reading.ac.uk>, and a lot of other PC people. <PRE> #ifdef _WINDOWS #include <windows.h> #include <fcntl.h> #include <sys\types.h> #include <sys\stat.h> #define NETREAD(s,b,l) recv((s),(b),(l),0) #define NETWRITE(s,b,l) send((s),(b),(l),0) #define NETCLOSE(s) closesocket(s) #define IOCTL(s,c,a) ioctlsocket(s,c, (long *) a) #include <io.h> #include <string.h> #include <process.h> #include <time.h> #include <direct.h> #include <stdio.h> #include <stdlib.h> #include <winsock.h> #ifdef _WINDLL #define NO_STDIO /* If we are making a DLL */ #endif #define NO_PASSWD #define NO_GETWD #define HAS_GETCWD #define NO_GETPASSWD #define NO_GETDOMAINNAME #define INCLUDES_DONE #define TCP_INCLUDES_DONE #define SOCKFD SOCKET /* WinSocks socket descriptor */ #define INVSOC INVALID_SOCKET /* WinSocks invalid socket */ #define DESIRED_WINSOCK_VERSION 0x0101 /* we'd like winsock ver 1.1... */ #define MINIMUM_WINSOCK_VERSION 0x0101 /* ...but we'll take ver 1.1 :) */ </PRE> <H3>File Access</H3> These next defintions are because the UNIX stuff is not supplied with BC4 (Paul Hounslow <P.M.Hounslow@reading.ac.uk> <PRE> #define NO_UNIX_IO typedef unsigned long mode_t; #define _IFMT 0170000 /* type of file */ #define _IFDIR 0040000 /* directory */ #define _IFCHR 0020000 /* character special */ #define _IFBLK 0060000 /* block special */ #define _IFREG 0100000 /* regular */ #define _IFLNK 0120000 /* symbolic link */ #define _IFSOCK 0140000 /* socket */ #define _IFIFO 0010000 /* fifo */ #define S_ISUID 0004000 /* set user id on execution */ #define S_ISGID 0002000 /* set group id on execution */ #define S_ISVTX 0001000 /* save swapped text even after use */ #ifdef S_IREAD #undef S_IREAD #define S_IREAD 0000400 /* read permission, owner */ #endif #ifdef S_IWRITE #undef S_IWRITE #define S_IWRITE 0000200 /* write permission, owner */ #endif #ifdef S_IEXEC #undef S_IEXEC #define S_IEXEC 0000100 /* execute/search permission, owner */ #endif #define S_ENFMT 0002000 /* enforcement-mode locking */ #ifdef S_IFMT #undef S_IFMT #define S_IFMT _IFMT #endif #ifdef S_IDIR #undef S_IDIR #define S_IFDIR _IFDIR #endif #ifdef S_IFCHR #undef S_IFCHR #define S_IFCHR _IFCHR #endif #ifdef S_IBLK #undef S_IBLK #define S_IFBLK _IFBLK #endif #ifdef S_IREG #undef S_IREG #define S_IFREG _IFREG #endif #define S_IFLNK _IFLNK #ifdef S_IFIFO #undef S_IFIFO #define S_IFIFO _IFIFO #endif #define S_IRWXU 0000700 /* rwx, owner */ #define S_IRUSR 0000400 /* read permission, owner */ #define S_IWUSR 0000200 /* write permission, owner */ #define S_IXUSR 0000100 /* execute/search permission, owner */ #define S_IRWXG 0000070 /* rwx, group */ #define S_IRGRP 0000040 /* read permission, group */ #define S_IWGRP 0000020 /* write permission, grougroup */ #define S_IXGRP 0000010 /* execute/search permission, group */ #define S_IRWXO 0000007 /* rwx, other */ #define S_IROTH 0000004 /* read permission, other */ #define S_IWOTH 0000002 /* write permission, other */ #define S_IXOTH 0000001 /* execute/search permission, other */ #define S_ISREG(m) (((m)&_IFMT) == _IFREG) </PRE> <H3>Errno and Return Codes</H3> Winsock has its own errno codes and it returns them through WSAGetLastError(). However, it does also support BSD error codes, so we make a compromise. <PRE> /* extern int errno; */ #define socerrno WSAGetLastError() #define ERRNO_DONE </PRE> Return code for socket functions. We can't use -1 as return value <PRE> #endif /* WINDOWS */ </PRE> <H2>Windows NT (32 bit)</H2> Some special things for the 32 bit version... <PRE> #ifdef WIN32 #define EWOULDBLOCK WSAEWOULDBLOCK #define EINPROGRESS WSAEINPROGRESS #define ECONNREFUSED WSAECONNREFUSED #define ETIMEDOUT WSAETIMEDOUT #define ENETUNREACH WSAENETUNREACH #define EHOSTUNREACH WSAEHOSTUNREACH #define EHOSTDOWN WSAEHOSTDOWN #define EISCONN WSAEISCONN #define SLEEP(n) Sleep((n)000) #endif </PRE> <H2>VAX/VMS</H2> Under VMS, there are many versions of TCP-IP. Define one if you do not use Digital's UCX product: <DL> <DT>UCX <DD> DEC's "Ultrix connection" (default) <DT>WIN_TCP <DD> From Wollongong, now GEC software. <DT>MULTINET <DD> From SRI, now from TGV Inv. <DT>DECNET <DD> Cern's TCP socket emulation over DECnet </DL> The last three do not interfere with the unix i/o library, and so they need special calls to read, write and close sockets. In these cases the socket number is a VMS channel number, so we make the @@@ HORRIBLE @@@ assumption that a channel number will be greater than 10 but a unix file descriptor less than 10. It works. <PRE> #ifdef VMS #define CACHE_FILE_PREFIX "SYS$LOGIN:Z_" #ifdef WIN_TCP #define NETREAD(s,b,l) ((s)>10 ? netread((s),(b),(l)) : read((s),(b),(l))) #define NETWRITE(s,b,l) ((s)>10 ? netwrite((s),(b),(l)) : write((s),(b),(l))) #define NETCLOSE(s) ((s)>10 ? netclose(s) : close(s)) #endif /* WIN_TCP */ #ifdef MULTINET #undef NETCLOSE #undef NETREAD #undef NETWRITE #define NETREAD(s,b,l) ((s)>10 ? socket_read((s),(b),(l)) : read((s),(b),(l))) #define NETWRITE(s,b,l) ((s)>10 ? socket_write((s),(b),(l)) : \ write((s),(b),(l))) #define NETCLOSE(s) ((s)>10 ? socket_close(s) : close(s)) #define IOCTL(s,c,a) socket_ioctl(s,c,a); #endif /* MULTINET */ #ifdef DECNET #undef SELECT /* not supported */ #define NETREAD(s,b,l) ((s)>10 ? recv((s),(b),(l),0) : read((s),(b),(l))) #define NETWRITE(s,b,l) ((s)>10 ? send((s),(b),(l),0) : write((s),(b),(l))) #define NETCLOSE(s) ((s)>10 ? socket_close(s) : close(s)) #endif /* Decnet */ /* Certainly this works for UCX and Multinet; not tried for Wollongong */ #ifdef MULTINET #include <time.h> #ifdef __TIME_T #define __TYPES #define __TYPES_LOADED #endif /* __TIME_T */ #include <multinet_root:[multinet.include.sys]types.h> #include <multinet_root:[multinet.include]errno.h> #ifdef __TYPES #define __TIME_T #endif /* __TYPE */ #ifdef __TIME_LOADED #define __TIME #endif /* __TIME_LOADED */ #include <multinet_root:[multinet.include.sys]time.h> #else /* not MULTINET */ #include <types.h> #include <errno.h> #include <time.h> #endif /* not MULTINET */ #include string #ifndef STDIO_H #include <stdio> #define STDIO_H #endif #include file #ifndef DECNET /* Why is it used at all ? Types conflict with "types.h> */ #include unixio #endif #define INCLUDES_DONE #ifdef MULTINET /* Include from standard Multinet directories */ #include <multinet_root:[multinet.include.sys]socket.h> #ifdef __TIME_LOADED /* defined by sys$library:time.h */ #define __TIME /* to avoid double definitions in next file */ #endif #include <multinet_root:[multinet.include.netinet]in.h> #include <multinet_root:[multinet.include.arpa]inet.h> #include <multinet_root:[multinet.include]netdb.h> #include <multinet_root:[multinet.include.sys]ioctl.h> #else /* not multinet */ #ifdef DECNET #include <types.h> /* for socket.h */ #include <socket.h> #include <dn" #include <dnetdb" #else /* UCX or WIN */ #ifdef CADDR_T #define __CADDR_T #endif /* problem with xlib.h inclusion */ #include <socket.h> #include <in.h> #include <inet.h> #include <netdb.h> #include <ucx$inetdef.h> #endif /* not DECNET */ #endif /* of Multinet or other TCP includes */ #define TCP_INCLUDES_DONE </PRE> On VMS directory browsing is available through a separate copy of dirent.c. The definition of R_OK seem to be missing from the system include files... <PRE> #define USE_DIRENT #define GOT_READ_DIR #include <dirent.h> #define STRUCT_DIRENT struct dirent #define R_OK 4 </PRE> On VMS machines, the linker needs to be told to put global data sections into a data segment using these storage classes. (MarkDonszelmann) <PRE> #ifdef VAXC #define GLOBALDEF globaldef #define GLOBALREF globalref #endif /* VAXC */ #endif /* vms */ </PRE> On non-VMS machines, the GLOBALDEF and GLOBALREF storage types default to normal C storage types. <PRE> #ifndef GLOBALREF #define GLOBALDEF #define GLOBALREF extern #endif </PRE> On non-VMS machines HTStat should be stat...On VMS machines HTStat is a function that converts directories and devices so that you can stat them. <PRE> #ifdef VMS typedef unsigned long mode_t; #define HTLstat HTStat #else /* non VMS */ #define HTStat stat #define HTLstat lstat #endif /* non VMS */ </PRE> <H3>Definition of Errno</H3> <PRE> #ifdef VMS #ifndef __DECC extern int uerrno; /* Deposit of error info (as per errno.h) */ extern volatile noshare int socket_errno; /* socket VMS error info (used for translation of vmserrno) */ extern volatile noshare int vmserrno; /* Deposit of VMS error info */ extern volatile noshare int errno; /* noshare to avoid PSECT conflict */ #define ERRNO_DONE #endif /* not DECC */ #endif /* VMS */ </PRE> <H2>SCO ODT unix version</H2> (by Brian King) <PRE> #ifdef sco #include <grp.h> #include <unistd.h> #include <sys/fcntl.h> #include <time.h> #define USE_DIRENT #define NEED_INITGROUPS #define NO_GETDOMAINNAME #endif </PRE> <H2>MIPS unix</H2> Mips hack (bsd4.3/sysV mixture...) <PRE> #ifdef Mips /* Bruker */ typedef mode_t int; #define S_ENFMT S_ISGID /* record locking enforcement flag */ #define S_ISCHR(m) ((m) & S_IFCHR) #define S_ISBLK(m) ((m) & S_IFBLK) #define S_ISDIR(m) (((m)& S_IFMT) == S_IFDIR) #define S_ISREG(m) (((m)& S_IFMT) == S_IFREG) #define WEXITSTATUS(s) (((s).w_status >> 8) & 0377) #define NO_STRFTIME </PRE> <H3>File Permissions</H3> <PRE> #ifndef S_IRWXU #define S_IRWXU 0000700 #define S_IRWXG 0000070 #define S_IRWXO 0000007 #define S_IRUSR 0000400 #define S_IWUSR 0000200 #define S_IXUSR 0000100 #define S_IRGRP 0000040 #define S_IWGRP 0000020 #define S_IXGRP 0000010 #define S_IROTH 0000004 #define S_IWOTH 0000002 #define S_IXOTH 0000001 #endif /* S_IRWXU */ #endif /* Mips */ </PRE> <H2>Solaris</H2> Includes Linux (thanks to Rainer Klute) and other SVR5 based systems <PRE> #if defined(__svr4__) || defined(_POSIX_SOURCE) || defined(__hpux) #ifdef UTS4 /* UTS wants sys/types.h first */ #include <sys/types.h> #endif #include <unistd.h> #ifdef UTS4 #include <sys/fcntl.h> #define POSIXWAIT #endif #ifdef AIX /* Apple Unix */ #include <fcntl.h> #else #include <sys/fcntl.h> #endif </PRE> This is for NCR 3000 and Pyramid that also are SVR4 systems. Thanks to <EM>Alex Podlecki, <a.podlecki@att.com></EM> <PRE> #ifndef NGROUPS_MAX #include <limits.h> #endif </PRE> <CODE>getwd()</CODE> is BSD. System V has <CODE>getcwd()</CODE> <PRE> #define NO_GETWD #define HAS_GETCWD #endif /* Solaris and SVR4 */ </PRE> <H2>UTS 2.1 (BSD-like)</H2> <PRE> #ifdef UTS2 #include <time.h> #include <fcntl.h> #define NO_STRFTIME #define WEXITSTATUS(x) ((int)((x).w_T.w_Retcode)) #undef POSIXWAIT #endif /* UTS2 */ </PRE> <H2>OSF/1</H2> <PRE> #ifdef __osf__ #define USE_DIRENT #endif /* OSF1 AXP */ </PRE> <H2>ISC 3.0</H2> by Lauren Weinstein <lauren@vortex.com>. <PRE> #ifdef ISC3 /* Lauren */ #define USE_DIRENT #define GOT_READ_DIR #include <sys/ipc.h> #include <sys/dirent.h> #define direct dirent #include <sys/unistd.h> #define d_namlen d_reclen #include <sys/limits.h> typedef int mode_t; #define SIGSTP #define POSIXWAIT #define _POSIX_SOURCE #include <sys/types.h> #include <sys/wait.h> #include <net/errno.h> #define _SYSV3 #include <time.h> #include <sys/fcntl.h> #define S_ISDIR(m) (((m) & 0170000) == 0040000) #define S_ISCHR(m) (((m) & 0170000) == 0020000) #define S_ISBLK(m) (((m) & 0170000) == 0060000) #define S_ISREG(m) (((m) & 0170000) == 0100000) #define S_ISFIFO(m) (((m) & 0170000) == 0010000) #define S_ISLNK(m) (((m) & 0170000) == 0120000) #endif /* ISC 3.0 */ </PRE> <H2>NeXT</H2> <PRE> #ifdef NeXT #include <sys/types.h> #include <sys/stat.h> typedef unsigned short mode_t; #ifndef S_ISDIR #define S_ISDIR(m) (m & S_IFDIR) #define S_ISREG(m) (m & S_IFREG) #define S_ISCHR(m) (m & S_IFCHR) #define S_ISBLK(m) (m & S_IFBLK) #define S_ISLNK(m) (m & S_IFLNK) #define S_ISSOCK(m) (m & S_IFSOCK) #define S_ISFIFO(m) (NO) #endif #ifndef WEXITSTATUS #define WEXITSTATUS(s) (((s).w_status >> 8) & 0377) #endif #ifndef O_NONBLOCK #define O_NONBLOCK O_NDELAY #endif </PRE> <H3>File Permissions for NeXT</H3> <PRE> #ifndef S_IRWXU #define S_IRWXU 0000700 #define S_IRWXG 0000070 #define S_IRWXO 0000007 #define S_IRUSR 0000400 #define S_IWUSR 0000200 #define S_IXUSR 0000100 #define S_IRGRP 0000040 #define S_IWGRP 0000020 #define S_IXGRP 0000010 #define S_IROTH 0000004 #define S_IWOTH 0000002 #define S_IXOTH 0000001 #endif /* S_IRWXU */ #endif /* NeXT */ </PRE> <H2>A/UX Apple UNIX</H2> <ADDRESS>Kelly King, bhutab@apple.com and Jim Jagielski, jim@jagubox.gsfc.nasa.gov</ADDRESS> <PRE> #ifdef _AUX #include <time.h> #define WEXITSTATUS(s) (((s).w_status >> 8) & 0377) #endif </PRE> <H2><A NAME="z10">Regular BSD unix versions</H2> These are a default unix where not already defined specifically. <PRE> #ifndef INCLUDES_DONE #include <sys/types.h> #include <string.h> #include <errno.h> /* independent */ #include <sys/time.h> /* independent */ #include <sys/stat.h> #include <sys/param.h> #include <sys/file.h> /* For open() etc */ #define INCLUDES_DONE #endif /* Normal includes */ </PRE> <H3>Directory reading stuff - BSD or SYS V</H3> <PRE> #ifdef unix /* if this is to compile on a UNIX machine */ #define GOT_PIPE /* We do have a pipe */ #define GOT_READ_DIR /* if directory reading functions are available */ #include <pwd.h> #include <grp.h> #include <stdio.h> #ifndef NeXT #define USE_DIRENT /* Try this all the time, Henrik May 29 94 */ #endif #ifdef USE_DIRENT /* sys v version */ #include <dirent.h> #define STRUCT_DIRENT struct dirent #else #include <sys/dir.h> #define STRUCT_DIRENT struct direct #endif #if defined(sun) && defined(__svr4__) #include <sys/fcntl.h> #include <limits.h> #endif #ifndef FNDELAY #define FNDELAY O_NDELAY #endif #if !defined(NeXT) && !defined(BSD4_4) && !defined(NetBSD) extern char *sys_errlist[]; extern int sys_nerr; #endif #endif /* unix */ </PRE> <HR> <H1><A NAME="z2">General Stuff</A></H1> Information below this line is general for most platforms. <P> See also <A NAME="z3" HREF="#z1">Platform Specific Stuff</A> <H3>Sleep System Call</H3> Some systems use milliseconds instead of seconds <PRE> #ifndef SLEEP #define SLEEP(n) sleep(n) #endif </PRE> <H3>SOCKS</H3> SOCKS modifications by Ian Dunkin <imd1707@ggr.co.uk>. <PRE> #if defined(SOCKS) && !defined(RULE_FILE) #define connect Rconnect #define accept Raccept #define getsockname Rgetsockname #define bind Rbind #define listen Rlisten #endif </PRE> <H3>Network Family</H3> <PRE> #ifdef DECNET typedef struct sockaddr_dn SockA; /* See netdnet/dn.h or custom vms.h */ #else /* Internet */ typedef struct sockaddr_in SockA; /* See netinet/in.h */ #endif </PRE> <H3>Default Values of Network Access</H3> <PRE> #ifndef NETCLOSE #define NETCLOSE close /* Routine to close a TCP-IP socket */ #endif #ifndef NETREAD #define NETREAD read /* Routine to read from a TCP-IP socket */ #endif #ifndef NETWRITE #define NETWRITE write /* Routine to write to a TCP-IP socket */ #endif </PRE> <H3>Include files for TCP</H3> <PRE> #ifndef TCP_INCLUDES_DONE #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> /* Must be after netinet/in.h */ #include <netdb.h> #define TCP_INCLUDES_DONE #endif </PRE> <H3>Definition of errno and Return Code</H3> <PRE> #ifndef ERRNO_DONE extern int errno; #define socerrno errno #endif </PRE> <H3>Definition of Socket Desrciptores</H3> This is necessary in order to support Windows NT... <PRE> #ifndef SOCKFD #define SOCKFD int /* Unix like socket descriptor */ #define INVSOC -1 /* Unix invalid socket */ #endif </PRE> <H3>Rough estimate of max path length</H3> <PRE> #ifndef HT_MAX_PATH #ifdef MAXPATHLEN #define HT_MAX_PATH MAXPATHLEN #else #ifdef PATH_MAX #define HT_MAX_PATH PATH_MAX #else #define HT_MAX_PATH 1024 /* Any better ideas? */ #endif #endif #endif /* HT_MAX_PATH */ </PRE> <H3>Definition of NGROUPS</H3> <PRE> #ifdef NO_UNIX_IO #define NO_GROUPS #endif #ifndef NO_GROUPS #ifndef NGROUPS #ifdef NGROUPS_MAX #define NGROUPS NGROUPS_MAX #else #define NGROUPS 20 /* Any better ideas? */ #endif #endif #endif </PRE> <H3>Definition of Standard File Descriptors</H3> If we don't have stderr etc. then set STDIN_FILENO to a dummy value. However, the value <B>IS</B> used! <PRE> #ifdef NO_STDIO #define STDIN_FILENO -1 #else #ifndef STDIN_FILENO #define STDIN_FILENO 0 #endif #ifndef STDOUT_FILENO #define STDOUT_FILENO 1 #endif #ifndef STDERR_FILENO #define STDERR_FILENO 2 #endif #endif </PRE> <H3>Definition of Max Domain Name Length</H3> <PRE> #ifndef MAXHOSTNAMELEN #define MAXHOSTNAMELEN 64 /* Any better ideas? */ #endif </PRE> <H3>Macros for manipulating masks for select()</H3> <PRE> #ifdef SELECT #ifndef FD_SET typedef unsigned int fd_set; #define FD_SET(fd,pmask) (*(pmask)) |= (1<<(fd)) #define FD_CLR(fd,pmask) (*(pmask)) &= ~(1<<(fd)) #define FD_ZERO(pmask) (*(pmask))=0 #define FD_ISSET(fd,pmask) (*(pmask) & (1<<(fd))) #endif /* FD_SET */ #endif /* SELECT */ </PRE> <H3>Macros for converting characters</H3> <PRE> #ifndef TOASCII #define TOASCII(c) (c) #define FROMASCII(c) (c) #endif </PRE> <H3>White Characters</H3> Is character c white space? For speed, include all control characters <PRE> #define WHITE(c) (((unsigned char)(TOASCII(c))) <= 32) </PRE> <H3>Cache file prefix</H3> This is something onto which we tag something meaningful to make a cache file name. used in HTWSRC.c at least. If it is nor defined at all, caching is turned off. <PRE> #ifndef CACHE_FILE_PREFIX #ifdef unix #define CACHE_FILE_PREFIX "/usr/wsrc/" #endif #endif </PRE> <PRE> #endif </PRE> End of system-specific file </BODY> </HTML>