Add regex(3) matching feature for card line strings.

- This feature will be enabled only if the string is
   enclosed by '/' something like;
	card "SunDisk" "/.*/"
 - Also added matching additional information strings
   followed by version string.  This is for the card which is
   difficult to idendentify by only the manufacturer and
   card version strings matching.
	card "MACNICA" "MIRACLE SCSI" "mPS100" "D.0"

Reviewed by:	imp
Obtained from:	PAO

usr.sbin/pccard/pccardd/cardd.c

@@ -36,6 +36,7 @@ static const char rcsid[] =
 #include <errno.h>
 #include <fcntl.h>
 #include <ctype.h>
+#include <regex.h>
 #include <sys/ioctl.h>
 #include "cardd.h"
 
@@ -208,17 +209,44 @@ card_removed(struct slot *sp)
 
 /* CIS string comparison */
 
+#define	REGCOMP_FLAGS	(REG_EXTENDED | REG_NOSUB)
+#define	REGEXEC_FLAGS	(0)
+
 static int
 cis_strcmp(char *db, char *cis)
 {
+	int     res, err;
+	char    buf[256];
+	regex_t rx;
+	char *	p;
 	size_t	n;
 
 	if (!db || !cis) {
 		return -1;
 	}
 	n = strlen(db);
-	return strncmp(db, cis, n);
-	/* XXX Add code for regex CIS string comparison here */
+	if (n > 2 && db[0] == '/' && db[n-1] == '/') {
+		/* matching by regex */
+		db++;
+	} else {
+		/* otherwise, matching by strncmp() */
+		return strncmp(db, cis, n);
+	}
+	p = xmalloc(n);
+	strncpy(p + 1, db, n-2);
+	*p = '^';
+	db = p;
+	if ((err = regcomp(&rx, p, REGCOMP_FLAGS))) {
+		regerror(err, &rx, buf, sizeof buf);
+		logmsg("Warning: REGEX error for\"%s\" -- %s\n", p, buf);
+		regfree(&rx);
+		free(p);
+		return -1;
+	}
+	res = regexec(&rx, cis, 0, NULL, REGEXEC_FLAGS);
+	regfree(&rx);
+	free(p);
+	return res;
 }
 
 /*
@@ -252,11 +280,23 @@ card_inserted(struct slot *sp)
 		case DT_VERS:
 			if (cis_strcmp(cp->manuf, sp->cis->manuf) == 0 &&
 			    cis_strcmp(cp->version, sp->cis->vers) == 0) {
+				if (cp->add_info1 != NULL &&
+				    cis_strcmp(cp->add_info1, sp->cis->add_info1) != 0) {
+					break;
+				}
+				if (cp->add_info2 != NULL &&
+				    cis_strcmp(cp->add_info2, sp->cis->add_info2) != 0) {
+					break;
+				}
+
 				logmsg("Card \"%s\"(\"%s\") "
-					"matched \"%s\" (\"%s\") ",
-					sp->cis->manuf, sp->cis->vers,
-					cp->manuf, cp->version
-					);
+					"[%s] [%s] "
+					"matched \"%s\" (\"%s\") "
+					"[%s] [%s] ",
+				    sp->cis->manuf, sp->cis->vers,
+				    sp->cis->add_info1, sp->cis->add_info2,
+				    cp->manuf, cp->version,
+				    cp->add_info1, cp->add_info2);
 				goto escape;
 			}
 			break;

usr.sbin/pccard/pccardd/cardd.h

@@ -67,6 +67,8 @@ struct card {
 	struct card *next;
 	char   *manuf;
 	char   *version;
+	char   *add_info1;
+	char   *add_info2;
 	u_char  func_id;
 	int     deftype;
 	struct ether *ether;		/* For net cards, ether at offset */

usr.sbin/pccard/pccardd/file.c

@@ -123,10 +123,14 @@ delete_card(struct card *cp)
 	struct cmd	*cmdp, *cmd_next;
 
 	/* free characters */
-	if (cp->manuf[0] != NULL)
+	if (cp->manuf != NULL)
 		free(cp->manuf);
-	if (cp->version[0] != NULL)
+	if (cp->version != NULL)
 		free(cp->version);
+	if (cp->add_info1 != NULL) 
+		free(cp->add_info1);
+	if (cp->add_info2 != NULL)
+		free(cp->add_info2);
 
 	/* free structures */
 	for (etherp = cp->ether; etherp; etherp = ether_next) {
@@ -395,6 +399,7 @@ static void
 parse_card(int deftype)
 {
 	char   *man, *vers, *tmp;
+	char   *add_info;
 	unsigned char index_type;
 	struct card *cp;
 	int     i, iosize;
@@ -408,13 +413,30 @@ parse_card(int deftype)
 	case DT_VERS:
 		man = newstr(next_tok());
 		vers = newstr(next_tok());
+		add_info = newstr(next_tok());
+		if (keyword(add_info)) {
+			pusht = 1;
+			free(add_info);
+			cp->add_info1 = NULL;
+			cp->add_info2 = NULL;
+		} else {
+			cp->add_info1 = add_info;
+			add_info = newstr(next_tok());
+			if (keyword(add_info)) {
+				pusht = 1;
+				free(add_info);
+				cp->add_info2 = NULL;
+			} else {
+				cp->add_info2 = add_info;
+			}
+		}
 		cp->manuf = man;
 		cp->version = vers;
 		cp->func_id = 0;
 		break;
 	case DT_FUNC:
-		cp->manuf = "";
-		cp->version = "";
+		cp->manuf = NULL;
+		cp->version = NULL;
 		cp->func_id = (u_char) func_tok();
 		break;
 	default:

usr.sbin/pccard/pccardd/pccard.conf.5

@@ -141,7 +141,7 @@ defined.
 .Ss "Card Identifiers"
 The syntax for card identifiers is:
 .Pp
-.Dl card Ar manufacturer version
+.Dl card Ar manufacturer version [ add_info1 [ add_info2 ]]
 .Dl config Ar index driver interrupt [ flags ]
 .Dl ether Ar offset
 .Dl insert Ar command
@@ -155,8 +155,14 @@ There may be multiple
 lines.
 The
 .Em card
-parameters are the Manufacturer name and card version that
+parameters are the Manufacturer name, card version and
+additional information add_info1, add_info2 that
 is used to match the values from the card's CIS memory.
+These parameter can be described in extended regular expression
+.Xr regex 3
+if the string is enclosed by '/' like "/.*/".
+Each of the expressions is evaluated with a character '^' at top.
+.Pp
 The
 .Em config
 parameters select the particular card's configuration index