mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-06 09:17:25 +00:00
606b60ca2f
to be scrapped, ultimately, and it will be.
219 lines
5.4 KiB
C
219 lines
5.4 KiB
C
/*
|
|
* The new sysinstall program.
|
|
*
|
|
* This is probably the last attempt in the `sysinstall' line, the next
|
|
* generation being slated to essentially a complete rewrite.
|
|
*
|
|
* $Id: attr.c,v 1.17 1997/04/02 12:07:21 jkh Exp $
|
|
*
|
|
* Copyright (c) 1995
|
|
* Jordan Hubbard. All rights reserved.
|
|
* Copyright (c) 1995
|
|
* Gary J Palmer. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer,
|
|
* verbatim and that no modifications are made prior to this
|
|
* point in the file.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR THEIR PETS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#include "sysinstall.h"
|
|
#include <ctype.h>
|
|
#include <sys/errno.h>
|
|
|
|
int
|
|
attr_parse_file(Attribs *attr, char *file)
|
|
{
|
|
int status;
|
|
FILE *fp;
|
|
|
|
if ((fp = fopen(file, "r")) == NULL) {
|
|
msgConfirm("Cannot open the information file `%s': %s (%d)", file, strerror(errno), errno);
|
|
return DITEM_FAILURE;
|
|
}
|
|
status = attr_parse(attr, fp);
|
|
fclose(fp);
|
|
return status;
|
|
}
|
|
|
|
int
|
|
attr_parse(Attribs *attr, FILE *fp)
|
|
{
|
|
char hold_n[MAX_NAME+1];
|
|
char hold_v[MAX_VALUE+1];
|
|
char buf[BUFSIZ * 4];
|
|
int bp, n, v, max;
|
|
enum { LOOK, COMMENT, NAME, VALUE, MVALUE, COMMIT, FILL, STOP } state;
|
|
int num_attribs;
|
|
int ch = 0;
|
|
|
|
n = v = num_attribs = bp = max = 0;
|
|
state = LOOK;
|
|
while (state != STOP) {
|
|
if (state != COMMIT) {
|
|
if (bp == max)
|
|
state = FILL;
|
|
else
|
|
ch = buf[bp++];
|
|
}
|
|
switch(state) {
|
|
case FILL:
|
|
if ((max = fread(buf, 1, sizeof buf, fp)) <= 0) {
|
|
state = STOP;
|
|
break;
|
|
}
|
|
else {
|
|
state = LOOK;
|
|
if (isDebug())
|
|
msgDebug("Read %d characters from attributes file on state FILL\n", max);
|
|
ch = buf[0];
|
|
bp = 1;
|
|
}
|
|
/* Fall through deliberately since we already have a character and state == LOOK */
|
|
|
|
case LOOK:
|
|
if (isspace(ch))
|
|
continue;
|
|
/* Allow shell or lisp style comments */
|
|
else if (ch == '#' || ch == ';') {
|
|
state = COMMENT;
|
|
continue;
|
|
}
|
|
else if (isalnum(ch) || ch == '_') {
|
|
if (n >= MAX_NAME) {
|
|
msgDebug("Attribute name overflow at character %d, ignoring entry..\n", n);
|
|
n = 0;
|
|
state = COMMENT;
|
|
}
|
|
else {
|
|
hold_n[n++] = ch;
|
|
state = NAME;
|
|
}
|
|
}
|
|
else {
|
|
msgDebug("Parse config: Invalid character '%c (%0x)'\n", ch, ch);
|
|
state = COMMENT; /* Ignore the rest of the line */
|
|
}
|
|
break;
|
|
|
|
case COMMENT:
|
|
if (ch == '\n')
|
|
state = LOOK;
|
|
break;
|
|
|
|
case NAME:
|
|
if (ch == '\n' || !ch) {
|
|
hold_n[n] = '\0';
|
|
hold_v[0] = '\0';
|
|
v = n = 0;
|
|
state = COMMIT;
|
|
}
|
|
else if (isspace(ch))
|
|
continue;
|
|
else if (ch == '=') {
|
|
hold_n[n] = '\0';
|
|
v = n = 0;
|
|
state = VALUE;
|
|
}
|
|
else
|
|
hold_n[n++] = ch;
|
|
break;
|
|
|
|
case VALUE:
|
|
if (v == 0 && isspace(ch))
|
|
continue;
|
|
else if (ch == '{')
|
|
state = MVALUE;
|
|
else if (ch == '\n' || !ch) {
|
|
hold_v[v] = '\0';
|
|
v = n = 0;
|
|
state = COMMIT;
|
|
}
|
|
else {
|
|
if (v >= MAX_VALUE) {
|
|
msgDebug("Value length overflow at character %d\n", v);
|
|
state = COMMENT;
|
|
v = n = 0;
|
|
break;
|
|
}
|
|
else
|
|
hold_v[v++] = ch;
|
|
}
|
|
break;
|
|
|
|
case MVALUE:
|
|
/* multiline value */
|
|
if (v >= MAX_VALUE) {
|
|
msgDebug("Value length overflow at character %d\n", v);
|
|
state = COMMENT;
|
|
n = v = 0;
|
|
}
|
|
else if (ch == '}') {
|
|
hold_v[v] = '\0';
|
|
v = n = 0;
|
|
state = COMMIT;
|
|
}
|
|
else
|
|
hold_v[v++] = ch;
|
|
break;
|
|
|
|
case COMMIT:
|
|
SAFE_STRCPY(attr[num_attribs].name, hold_n);
|
|
SAFE_STRCPY(attr[num_attribs].value, hold_v);
|
|
state = LOOK;
|
|
v = n = 0;
|
|
if (++num_attribs >= MAX_ATTRIBS) {
|
|
msgDebug("Attribute limit overflow at %d; encountered a bad attributes file!\n", num_attribs);
|
|
return DITEM_FAILURE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
msgFatal("Unknown state in attr_parse??");
|
|
}
|
|
}
|
|
attr[num_attribs].name[0] = NULL; /* end marker */
|
|
attr[num_attribs].value[0] = NULL; /* end marker */
|
|
if (isDebug())
|
|
msgDebug("Finished parsing %d attributes.\n", num_attribs);
|
|
|
|
return DITEM_SUCCESS;
|
|
}
|
|
|
|
char *
|
|
attr_match(Attribs *attr, char *name)
|
|
{
|
|
int n;
|
|
|
|
if (isDebug())
|
|
msgDebug("Trying to match attribute `%s'\n", name);
|
|
|
|
for (n = 0; attr[n].name[0] && strcasecmp(attr[n].name, name); n++);
|
|
|
|
if (attr[n].name[0]) {
|
|
if (isDebug())
|
|
msgDebug("Returning `%s'\n", attr[n].value);
|
|
return(attr[n].value);
|
|
}
|
|
return NULL;
|
|
}
|