Moving Sun RPC code into libc, part 1. Based on work done by a number of

people, including J.T. Conklin, Theo de Raadt, Paul Richards, and probably
someone else who's going to flame me as soon as they see this message.

1 files changed, 298 insertions, 0 deletions

diff --git a/lib/libc/rpc/getrpcent.c b/lib/libc/rpc/getrpcent.c
new file mode 100644
index 0000000..a495278
--- /dev/null
+++ b/lib/libc/rpc/getrpcent.c
@@ -0,0 +1,298 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user or with the express written consent of
+ * Sun Microsystems, Inc.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro";*/
+static char *rcsid = "$Id: getrpcent.c,v 1.1 1993/10/27 05:40:29 paul Exp $";
+#endif
+
+/*
+ * Copyright (c) 1984 by Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#ifdef YP
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#endif
+
+/*
+ * Internet version.
+ */
+struct rpcdata {
+	FILE	*rpcf;
+	int	stayopen;
+#define	MAXALIASES	35
+	char	*rpc_aliases[MAXALIASES];
+	struct	rpcent rpc;
+	char	line[BUFSIZ+1];
+#ifdef	YP
+	char	*domain;
+	char	*current;
+	int	currentlen;
+#endif
+} *rpcdata;
+
+#ifdef	YP
+static int	__yp_nomap = 0;
+#endif	/* YP */
+
+static	struct rpcent *interpret();
+struct	hostent *gethostent();
+char	*inet_ntoa();
+
+static char RPCDB[] = "/etc/rpc";
+
+static struct rpcdata *
+_rpcdata()
+{
+	register struct rpcdata *d = rpcdata;
+
+	if (d == 0) {
+		d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata));
+		rpcdata = d;
+	}
+	return (d);
+}
+
+struct rpcent *
+getrpcbynumber(number)
+	register int number;
+{
+	register struct rpcdata *d = _rpcdata();
+	register struct rpcent *p;
+#ifdef	YP
+	int reason;
+	char adrstr[16];
+#endif
+
+	if (d == 0)
+		return (0);
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(&d->domain)) {
+                sprintf(adrstr, "%d", number);
+                reason = yp_match(d->domain, "rpc.bynumber", adrstr, strlen(adrstr),
+                                  &d->current, &d->currentlen);
+                switch(reason) {
+                case 0:
+                        break;
+                case YPERR_MAP:
+                        __yp_nomap = 1;
+                        goto no_yp;
+                        break;
+                default:
+                        return(0);
+                        break;
+                }
+                d->current[d->currentlen] = '\0';
+                p = interpret(d->current, d->currentlen);
+                (void) free(d->current);
+                return p;
+        }
+no_yp:
+#endif	/* YP */
+	setrpcent(0);
+	while (p = getrpcent()) {
+		if (p->r_number == number)
+			break;
+	}
+	endrpcent();
+	return (p);
+}
+
+struct rpcent *
+getrpcbyname(name)
+	char *name;
+{
+	struct rpcent *rpc;
+	char **rp;
+
+	setrpcent(0);
+	while (rpc = getrpcent()) {
+		if (strcmp(rpc->r_name, name) == 0)
+			return (rpc);
+		for (rp = rpc->r_aliases; *rp != NULL; rp++) {
+			if (strcmp(*rp, name) == 0)
+				return (rpc);
+		}
+	}
+	endrpcent();
+	return (NULL);
+}
+
+void
+setrpcent(f)
+	int f;
+{
+	register struct rpcdata *d = _rpcdata();
+
+	if (d == 0)
+		return;
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(NULL)) {
+                if (d->current)
+                        free(d->current);
+                d->current = NULL;
+                d->currentlen = 0;
+                return;
+        }
+        __yp_nomap = 0;
+#endif	/* YP */
+	if (d->rpcf == NULL)
+		d->rpcf = fopen(RPCDB, "r");
+	else
+		rewind(d->rpcf);
+	d->stayopen |= f;
+}
+
+void
+endrpcent()
+{
+	register struct rpcdata *d = _rpcdata();
+
+	if (d == 0)
+		return;
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(NULL)) {
+        	if (d->current && !d->stayopen)
+                        free(d->current);
+                d->current = NULL;
+                d->currentlen = 0;
+                return;
+        }
+        __yp_nomap = 0;
+#endif	/* YP */
+	if (d->rpcf && !d->stayopen) {
+		fclose(d->rpcf);
+		d->rpcf = NULL;
+	}
+}
+
+struct rpcent *
+getrpcent()
+{
+	struct rpcent *hp;
+	int reason;
+	register struct rpcdata *d = _rpcdata();
+#ifdef	YP
+	char *key = NULL, *val = NULL;
+	int keylen, vallen;
+#endif
+
+	if (d == 0)
+		return(NULL);
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(&d->domain)) {
+                if (d->current == NULL && d->currentlen == 0) {
+                        reason = yp_first(d->domain, "rpc.bynumber",
+                                          &d->current, &d->currentlen,
+                                          &val, &vallen);
+                } else {
+                        reason = yp_next(d->domain, "rpc.bynumber",
+                                         d->current, d->currentlen,
+                                         &d->current, &d->currentlen,
+                                         &val, &vallen);
+                }
+                switch(reason) {
+                case 0:
+                        break;
+                case YPERR_MAP:
+                        __yp_nomap = 1;
+                        goto no_yp;
+                        break;
+                default:
+                        return(0);
+                        break;
+                }
+                val[vallen] = '\0';
+                hp = interpret(val, vallen);
+                (void) free(val);
+                return hp;
+        }
+no_yp:
+#endif	/* YP */
+	if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
+		return (NULL);
+        if (fgets(d->line, BUFSIZ, d->rpcf) == NULL)
+		return (NULL);
+	return (interpret(d->line, strlen(d->line)));
+}
+
+static struct rpcent *
+interpret(val, len)
+	char *val;
+	int len;
+{
+	register struct rpcdata *d = _rpcdata();
+	char *p;
+	register char *cp, **q;
+
+	if (d == 0)
+		return (0);
+	(void) strncpy(d->line, val, len);
+	p = d->line;
+	d->line[len] = '\n';
+	if (*p == '#')
+		return (getrpcent());
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		return (getrpcent());
+	*cp = '\0';
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		return (getrpcent());
+	*cp++ = '\0';
+	/* THIS STUFF IS INTERNET SPECIFIC */
+	d->rpc.r_name = d->line;
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	d->rpc.r_number = atoi(cp);
+	q = d->rpc.r_aliases = d->rpc_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL) 
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &(d->rpc_aliases[MAXALIASES - 1]))
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&d->rpc);
+}
+