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Handle line-oriented parsing. Add parse_host_name function. Move parse_ip_addr and make it return status. Fix date parsing off-by-one-day bug

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Ted Lemon
1997-05-09 08:08:53 +00:00
parent ac16c3da76
commit 796ef0084f
1 changed files with 78 additions and 4 deletions
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82
common/parse.c
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@@ -42,7 +42,7 @@
#ifndef lint
static char copyright[] =
"$Id: parse.c,v 1.1 1997/02/18 14:27:33 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium. All rights reserved.\n";
"$Id: parse.c,v 1.2 1997/05/09 08:08:53 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
@@ -83,6 +83,12 @@ void skip_to_semi (cfile)
} else if (token == SEMI && !brace_count) {
token = next_token (&val, cfile);
return;
} else if (token == EOL) {
/* EOL only happens when parsing /etc/resolv.conf,
and we treat it like a semicolon because the
resolv.conf file is line-oriented. */
token = next_token (&val, cfile);
return;
}
token = next_token (&val, cfile);
} while (token != EOF);
@@ -128,6 +134,74 @@ char *parse_string (cfile)
return s;
}
/* hostname :== identifier | hostname DOT identifier */
char *parse_host_name (cfile)
FILE *cfile;
{
char *val;
int token;
int len = 0;
char *s;
char *t;
pair c = (pair)0;
/* Read a dotted hostname... */
do {
/* Read a token, which should be an identifier. */
token = next_token (&val, cfile);
if (!is_identifier (token) && token != NUMBER) {
parse_warn ("expecting an identifier in hostname");
skip_to_semi (cfile);
return (char *)0;
}
/* Store this identifier... */
if (!(s = (char *)malloc (strlen (val) + 1)))
error ("can't allocate temp space for hostname.");
strcpy (s, val);
c = cons ((caddr_t)s, c);
len += strlen (s) + 1;
/* Look for a dot; if it's there, keep going, otherwise
we're done. */
token = peek_token (&val, cfile);
if (token == DOT)
token = next_token (&val, cfile);
} while (token == DOT);
/* Assemble the hostname together into a string. */
if (!(s = (char *)malloc (len)))
error ("can't allocate space for hostname.");
t = s + len;
*--t = 0;
while (c) {
pair cdr = c -> cdr;
int l = strlen ((char *)(c -> car));
t -= l;
memcpy (t, (char *)(c -> car), l);
/* Free up temp space. */
free (c -> car);
free (c);
c = cdr;
if (t != s)
*--t = '.';
}
return s;
}
int parse_ip_addr (cfile, addr)
FILE *cfile;
struct iaddr *addr;
{
char *val;
int token;
addr -> len = 4;
if (parse_numeric_aggregate (cfile, addr -> iabuf,
&addr -> len, DOT, 10, 8))
return 1;
return 0;
}
/* hardware-parameter :== HARDWARE ETHERNET csns SEMI
csns :== NUMBER | csns COLON NUMBER */
@@ -545,13 +619,13 @@ TIME parse_date (cfile)
/* Guess the time value... */
guess = ((((((365 * (tm.tm_year - 70) + /* Days in years since '70 */
(tm.tm_year - 72) / 4 + /* Leap days since '70 */
(tm.tm_year - 69) / 4 + /* Leap days since '70 */
(tm.tm_mon /* Days in months this year */
? months [tm.tm_mon - 1]
: 0) +
(tm.tm_mon > 1 && /* Leap day this year */
((tm.tm_year - 72) & 3)) +
tm.tm_mday) * 24) + /* Day of month */
!((tm.tm_year - 72) & 3)) +
tm.tm_mday - 1) * 24) + /* Day of month */
tm.tm_hour) * 60) +
tm.tm_min) * 60) + tm.tm_sec;