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1
2/*  0 */
3
4/**************************************************************************/
5/*
6/* MODULE NAME : RESTORE utility
7/*
8/* SOURCE FILE NAME: RESTORE.C
9/*
10/* DESCRIPTIVE NAME : Restore one or more backed-up files from a
11/* disk to another disk
12/*
13/* FUNCTION: Restore files saved by BACKUP utility to their
14/* destination disk. This utility will be able to identify
15/* which of the two backup formats was used and to do the
16/* restore accordingly.
17/*
18/* NOTES: This RESTORE utility recognize two data formats:
19/* 1. The data format used by BACKUP utility of 3.2 and before.
20/* 2. The data format used by BACKUP utility of 3.3 and above,
21/* and also used by CP/DOS 1.0 and above.
22/*
23/* DEPENDENCY:
24/* This utility has a dependency on the BACKUP utility to
25/* perform file backup correctly using the data structure
26/* agreed on.
27/*
28/* RESTRICTION:
29/* This utility is able to restore the files which are previously
30/* backup by the BACKUP utility only.
31/*
32/* ENTRY POINT: Main
33/*
34/* INPUT: (PARAMETERS)
35/*
36/* COMMAND SYNTAX:
37/* [d:][path]Restore d: [d:][path][filename][.ext]
38/* [/S] [/P] [/B:date] [/A:date] [/E:time][/L:time][/M] [/N]
39/*
40/* Parameters:
41/* The first parameter you specify is the drive designator of
42/* the disk containing the backed up files. The second
43/* parameter is the a filespec indicating which files you want
44/* to restore.
45/* Switches:
46/* /S - Restore subdirectories too.
47/* /P - If any hidden or read-only files match the filespec,
48/* prompt the user for permission to restore them.
49/* /B - Only restore those files which were last Revised on or
50/* before the given date.
51/* /A - Only restore those files which were last Revised on or
52/* after the given date.
53/* /E - Only restore those files which were last Revised at or
54/* earlier then the given time.
55/* /L - Only restore those files which were last Revised at or
56/* later then the given time.
57/* /M - Only restore those files which have been Revised since
58/* the last backup.
59/* /N - Only restore those files which no longer exist on the
60/* destination disk.
61/*
62/* EXIT-ERROR:
63/* The restore program sets the ERRORLEVEL in the following manner:
64/*
65/* 0 Normal completion
66/* 1 No files were found to backup
67/* 2 Some files not restored due to sharing conflict
68/* 3 Terminated by user
69/* 4 Terminated due to error
70/*
71/*
72/* SOURCE HISTORY:
73/*
74/* Modification History:
75/*
76/* Code added in DOS 3.3 to allow control file > 64k commented as:
77/* /* !wrw */
78/*
79/* ;AN000; Code added in DOS 4.0
80/* ;AN000;2 Support for APPEND /X deactivation
81/* ;AN000;3 Support for Extended Attributes
82/* ;AN000;4 Support for PARSE service routines
83/* ;AN000;5 Support for code page file tags
84/* ;AN000;6 Support for MESSAGE retriever
85/* ;AN000;8 Eliminate double prompting on single drive systems
86/* ;AN000;9 Fix for termination on "Unable to MKDIR"
87/* ;AN000;10 Fix for p1620
88/* ;AN001; Add CR, LF to end of command line
89/* ;AN002; Make parser errors display the offending parameter
90/* ;AN003; Only disallow restore of system files in ROOT !!
91/* ;AN004; Fix parser
92/* ;AN005; Replace COM_STRRCHR dbcs routine, fixes p5029
93/***************** END OF SPECIFICATION *********************************/
94
95#include "rt.h"
96#include "rt1.h"
97#include "rt2.h"
98#include "restpars.h" /*;AN000;4*/
99#include "dos.h" /*;AN000;2*/
100#include "comsub.h" /* common subroutine def'n */
101#include "doscalls.h"
102#include "error.h"
103
104
105BYTE destddir[MAXPATH+3] = {'\0'};
106BYTE srcddir[MAXPATH+3] = {'\0'};
107BYTE rtswitch=0;
108BYTE control_flag=0;
109BYTE control_flag2=0;
110BYTE *buf_pointer;
111
112/*=============================*/
113BYTE srcd; /*;AN000;4*/
114BYTE destd; /*;AN000;4*/
115BYTE inpath [MAXPATH]; /*;AN000;*/
116BYTE infname [MAXFNAME]; /*;AN000;*/
117BYTE infext [MAXFEXT]; /*;AN000;*/
118BYTE infspec [MAXFSPEC]; /*;AN000;*/
119/*=============================*/
120/*---------------------------------------*/
121/*- */
122/*- Data structures for the PARSER */
123/*- */
124/*---------------------------------------*/
125
126struct subst_list sublist; /*;AN000;6 Message substitution list */
127char response_buff[5]; /*;AN000;6 User response buffer *//*;AN000;6*/
128
129BYTE append_indicator = 0xff; /*;AN000;2 Indicates the support for APPEND /X is active */
130WORD original_append_func; /*;AN000;2 APPEND functions on program entry*/
131struct timedate td;
132
133/***************** START OF SPECIFICATION *********************************/
134/*
135/* SUBROUTINE NAME : Main
136/*
137/* DESCRIPTIVE NAME : Main routine for RESTORE utility
138/*
139/* FUNCTION: Main routine does the following:
140/* 1. Verifies the DOS version
141/* 2. Validate the input command line
142/* 3. Calls dorestore to do the file restore.
143/*
144/* NOTES:
145/*
146/* ENTRY POINT: Main
147/* Linkage: main((argc,argv)
148/*
149/* INPUT: (PARAMETERS)
150/* argc - number of arguments
151/* argv - array of pointers to arguments
152/*
153/* EFFECTS: rtswitch is changed to reflect the switches passed.
154/*
155/********************** END OF SPECIFICATIONS *******************************/
156void main(argc,argv) /* wrw! */
157 int argc;
158 char *argv[];
159{
160 WORD retcode;
161 union REGS inregs,outregs; /*AN000*/
162 WORD i; /*loop counter */
163 WORD j; /*arrary subcript */
164 BYTE *c;
165 DWORD drive_map;
166 DWORD prev_address;
167 WORD prev_action;
168
169/**********************************/
170/** PRELOAD MESSAGES **/
171/**********************************/
172 sysloadmsg(&inregs,&outregs); /*;AN000;6 Preload messages */
173 if (outregs.x.cflag & CARRY) /*;AN000;6 If there was an error */
174 { /*;AN000;6*/
175 sysdispmsg(&outregs,&outregs); /*;AN000;6 Display the error message */
176 exit_routine(UNEXPECTED); /*;AN000;6 and terminate */
177 } /*;AN000;6*/
178
179
180/*********************************************/
181/* Parse the drive and file name entered */
182/*********************************************/
183 parse_command_line /*;AN000;4*/
184 ( /*;AN000;4*/
185 argc, /*;AN000;4*/
186 argv /*;AN000;4*/
187 ); /*;AN000;4*/
188
189/*********************************************/
190/* Make sure APPEND /X is not active */
191/*********************************************/
192 check_appendX(); /*;AN000;2 */
193
194
195/*********************************************/
196/* Take control of Control Break Interrupt */
197/*********************************************/
198 retcode = DOSSETSIGHANDLER
199 (
200 (void far *)signal_handler_routine, /* Signal handler address */
201 (DWORD far *)&prev_address, /* Address of previous handler */
202 (unsigned far *)&prev_action, /* Address of previous action */
203 (unsigned)INSTALL_SIGNAL, /* Indicate request type */
204 (unsigned)CTRL_C /* Signal number */
205 );
206
207 retcode = DOSSETSIGHANDLER
208 (
209 (void far *)signal_handler_routine, /* Signal handler address */
210 (DWORD far *)&prev_address, /* Address of previous handler */
211 (unsigned far *)&prev_action, /* Address of previous action */
212 (unsigned)INSTALL_SIGNAL, /* Indicate request type */
213 (unsigned)CTRL_BREAK /* Signal number */
214 );
215
216/*********************************/
217/* Take control of Hard Errors */
218/*********************************/
219 set_int24_vector(); /*;AN000; Set Critical error vector (int 24h) */
220
221
222 /************************************************************/
223 /* call dorestore (RTDO.C) to actually do the restoring */
224 /************************************************************/
225 dorestore(srcd,destd,inpath,infname,infext,infspec,&td);
226
227 /************************************************************/
228 /* output a msg in the following situations: */
229 /* if flag indicates no file found */
230 /************************************************************/
231 if (set_reset_test_flag(&control_flag,FOUND,TEST)==FALSE)
232 {
233 /*warning! No files were found to restore*/
234 display_it(NO_FILE_TO_RESTORE,STND_ERR_DEV,0,NO_RESPTYPE,(BYTE)UTIL_MSG); /*;AN000;6*/
235 exit_routine(NOFILES);
236 }
237
238 exit_routine(NORMAL);
239
240} /* end of main*/
HIC SVNT DRACONES