/*============================================================================= HydraCom Version 1.00 A sample implementation of the HYDRA Bi-Directional File Transfer Protocol HydraCom was written by Arjen G. Lentz, LENTZ SOFTWARE-DEVELOPMENT COPYRIGHT (C) 1991-1993; ALL RIGHTS RESERVED The HYDRA protocol was designed by Arjen G. Lentz, LENTZ SOFTWARE-DEVELOPMENT and Joaquim H. Homrighausen COPYRIGHT (C) 1991-1993; ALL RIGHTS RESERVED Revision history: 06 Sep 1991 - (AGL) First tryout .. ... .... - Internal development 11 Jan 1993 - HydraCom version 1.00, Hydra revision 001 (01 Dec 1992) For complete details of the Hydra and HydraCom licensing restrictions, please refer to the license agreements which are published in their entirety in HYDRACOM.C and LICENSE.DOC, and also contained in the documentation file HYDRACOM.DOC Use of this file is subject to the restrictions contained in the Hydra and HydraCom licensing agreements. If you do not find the text of this agreement in any of the aforementioned files, or if you do not have these files, you should immediately contact LENTZ SOFTWARE-DEVELOPMENT and/or Joaquim Homrighausen at one of the addresses listed below. In no event should you proceed to use this file without having accepted the terms of the Hydra and HydraCom licensing agreements, or such other agreement as you are able to reach with LENTZ SOFTWARE-DEVELOMENT and Joaquim Homrighausen. Hydra protocol design and HydraCom driver: Hydra protocol design: Arjen G. Lentz Joaquim H. Homrighausen LENTZ SOFTWARE-DEVELOPMENT 389, route d'Arlon Langegracht 7B L-8011 Strassen 3811 BT Amersfoort Luxembourg The Netherlands FidoNet 2:283/512, AINEX-BBS +31-33-633916 FidoNet 2:270/17 arjen_lentz@f512.n283.z2.fidonet.org joho@ae.lu Please feel free to contact us at any time to share your comments about our software and/or licensing policies. =============================================================================*/ #include "hydracom.h" #ifdef __MSDOS__ #include #include #include #endif #ifndef AMIGA static boolean dos_sharing = false; #endif /* AMIGA */ void dos_sharecheck (void) /* SHARE installed? set dos_sharing true/false */ { #if __MSDOS__ union REGS regs; regs.x.ax = 0x1000; /* DOS Multiplexer */ int86(0x2f,®s,®s); /* INT 2Fh sub 1000h */ dos_sharing = (regs.h.al == 0xff) ? true : false; #endif }/*dos_sharecheck()*/ int dos_open (char *pathname, byte create) { register int access; #ifdef __MSDOS__ access = O_RDWR | O_BINARY; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (open(pathname, access, create ? S_IREAD | S_IWRITE : 0)); #endif #ifdef __TOS__ access = O_RDWR; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (open(pathname, access, 0)); #endif #ifdef AMIGA access = O_RDWR; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (open(pathname, access, 0)); #endif /* AMIGA */ }/*dos_open()*/ int dos_sopen (char *pathname, byte create) { register int access; #ifdef __MSDOS__ access = O_RDWR | O_BINARY; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (sopen(pathname, access, dos_sharing ? SH_DENYWR : 0, create ? S_IREAD | S_IWRITE : 0)); #endif #ifdef __TOS__ access = O_RDWR; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (open(pathname, access, 0)); #endif #ifdef AMIGA access = O_RDWR; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (open(pathname, access, 0)); #endif }/*dos_sopen()*/ int dos_sappend (char *pathname, byte create) { register int access; #ifdef __MSDOS__ access = O_WRONLY | O_APPEND | O_TEXT; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (sopen(pathname, access, dos_sharing ? SH_DENYWR : 0, create ? S_IREAD | S_IWRITE : 0)); #endif #ifdef __TOS__ access = O_WRONLY | O_APPEND; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (open(pathname, access, 0)); #endif #ifdef AMIGA access = O_WRONLY | O_APPEND; if (create) { access |= O_CREAT; if (create == 2) access |= O_TRUNC; } return (open(pathname, access, 0)); #endif }/*dos_sappend()*/ int dos_close (int handle) { return (close(handle)); }/*dos_close()*/ int dos_lock (int handle, long offset, long len) { #ifdef __MSDOS__ if (dos_sharing) while (!lock(handle,offset,len)); #endif return (0); }/*dos_lock()*/ int dos_unlock (int handle, long offset, long len) { #ifdef __MSDOS__ return (dos_sharing ? unlock(handle,offset,len) : 0); #endif #ifdef __TOS__ return 0; #endif #ifdef AMIGA return 0; #endif }/*dos_unlock()*/ long dos_seek (int handle, long offset, int fromwhere) { return (lseek(handle,offset,fromwhere)); }/*dos_seek()*/ long dos_tell (int handle) { #ifdef __MSDOS__ return (tell(handle)); #endif #ifdef __TOS__ return (lseek(handle,0L,SEEK_CUR)); #endif #ifdef AMIGA return (lseek(handle,0L,SEEK_CUR)); #endif }/*dos_tell()*/ #ifdef AMIGA int dos_read (int handle, void *buf, long len) { return ((int) read(handle,buf,len)); }/*dos_read()*/ #else int dos_read (int handle, void *buf, word len) { #ifdef __MSDOS__ return (_read(handle,buf,len)); #endif #ifdef __TOS__ return ((int) read(handle,buf,len)); #endif #ifdef AMIGA return ((int) read(handle,buf,len)); #endif }/*dos_read()*/ #endif /* AMIGA */ #ifdef AMIGA int dos_write (int handle, void *buf, long len) { return ((int) write(handle,buf,len)); }/*dos_write()*/ #else int dos_write (int handle, void *buf, word len) { #ifdef __MSDOS__ return (_write(handle,buf,len)); #endif #ifdef __TOS__ return ((int) write(handle,buf,len)); #endif }/*dos_write()*/ #endif /* AMIGA */ /* ---------------------------------------------------------------------------- oflags mode r O_RDONLY don't care w O_CREAT | O_WRONLY | O_TRUNC S_IWRITE a O_CREAT | O_WRONLY | O_APPEND S_IWRITE r+ O_RDWR don't care w+ O_RDWR | O_CREAT | O_TRUNC S_IWRITE | S_IREAD a+ O_RDWR | O_CREAT | O_APPEND S_IWRITE | S_IREAD ---------------------------------------------------------------------------- */ FILE *sfopen (char *name, char *mode, int shareflag) { #ifdef __MSDOS__ int fd, access, flags; char *type = mode, c; FILE *fp; if ((c = *type++) == 'r') { access = O_RDONLY; flags = 0; } else if (c == 'w') { access = O_WRONLY | O_CREAT | O_TRUNC; flags = S_IWRITE; } else if (c == 'a') { access = O_RDWR | O_CREAT | O_APPEND; flags = S_IWRITE; } else return (NULL); c = *type++; if (c == '+' || (*type == '+' && (c == 't' || c == 'b'))) { if (c == '+') c = *type; access = (access & ~(O_RDONLY | O_WRONLY)) | O_RDWR; flags = S_IREAD | S_IWRITE; } if (c == 't') access |= O_TEXT; else if (c == 'b') access |= O_BINARY; else access |= (_fmode & (O_TEXT | O_BINARY)); if (dos_sharing) access |= shareflag; fd = open(name, access, flags); if (fd < 0) return (NULL); if ((fp = fdopen(fd,mode)) == NULL) close(fd); else if (setvbuf(fp,NULL,_IOFBF,BUFSIZ)) { fclose(fp); return (NULL); } return (fp); #endif #ifdef __TOS__ char *p, *q, nm[10]; strcpy(nm,mode); for(p=q=nm; *p; p++) if (*p!='t') *q++=*p; *q='\0'; return (fopen(name,nm)); #endif #ifdef AMIGA return(fopen(name,mode)); #endif /* AMIGA */ }/*sfopen()*/ /* end of dos_file.c */