Rework RPC code once again. By default, only enable the

stuff needed for NFS mounts, rsh, and similar.
 -Erik

1 files changed, 327 insertions, 0 deletions

diff --git a/libc/inet/rpc/ruserpass.c b/libc/inet/rpc/ruserpass.c
new file mode 100644
index 000000000..0f0a4e1fc
--- /dev/null
+++ b/libc/inet/rpc/ruserpass.c
@@ -0,0 +1,327 @@
+/*
+ * Copyright (c) 1985, 1993, 1994
+ *	The Regents of the University of California.  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.
+ * 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.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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, 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.
+ */
+
+#define __FORCE_GLIBC
+#include <features.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define _(X)  (X)
+/* #include "ftp_var.h" */
+
+static	int token (void);
+static	FILE *cfile;
+
+#define	DEFAULT	1
+#define	LOGIN	2
+#define	PASSWD	3
+#define	ACCOUNT 4
+#define MACDEF  5
+#define	ID	10
+#define	MACHINE	11
+
+static char tokval[100];
+
+static const char tokstr[] =
+{
+#define TOK_DEFAULT_IDX	0
+  "default\0"
+#define TOK_LOGIN_IDX	(TOK_DEFAULT_IDX + sizeof "default")
+  "login\0"
+#define TOK_PASSWORD_IDX (TOK_LOGIN_IDX + sizeof "login")
+  "password\0"
+#define TOK_PASSWD_IDX	(TOK_PASSWORD_IDX + sizeof "password")
+  "passwd\0"
+#define TOK_ACCOUNT_IDX	(TOK_PASSWD_IDX + sizeof "passwd")
+  "account\0"
+#define TOK_MACHINE_IDX	(TOK_ACCOUNT_IDX + sizeof "account")
+  "machine\0"
+#define TOK_MACDEF_IDX	(TOK_MACHINE_IDX + sizeof "machine")
+  "macdef"
+};
+
+static const struct toktab {
+	int tokstr_off;
+	int tval;
+} toktab[]= {
+	{ TOK_DEFAULT_IDX,	DEFAULT },
+	{ TOK_LOGIN_IDX,	LOGIN },
+	{ TOK_PASSWORD_IDX,	PASSWD },
+	{ TOK_PASSWD_IDX,	PASSWD },
+	{ TOK_ACCOUNT_IDX,	ACCOUNT },
+	{ TOK_MACHINE_IDX,	MACHINE },
+	{ TOK_MACDEF_IDX,	MACDEF }
+};
+
+
+
+int ruserpass(const char *host, const char **aname, const char **apass)
+{
+	char *hdir, *buf, *tmp;
+	char myname[1024], *mydomain;
+	int t, usedefault = 0;
+	struct stat64 stb;
+
+	/* Give up when running a setuid or setgid app. */
+	if ((getuid() != geteuid()) || getgid() != getegid())
+	    return -1;
+	hdir = getenv("HOME");
+	if (hdir == NULL) {
+		/* If we can't get HOME, fail instead of trying ".",
+		   which is no improvement. */
+	  	return -1;
+	}
+
+	buf = alloca (strlen(hdir) + 8);
+	strcpy(buf, hdir);
+	strcat(buf, "/.netrc");
+	cfile = fopen(buf, "r");
+	if (cfile == NULL) {
+		if (errno != ENOENT)
+			printf("%s", buf);
+		return (0);
+	}
+	/* No threads use this stream.  */
+	__fsetlocking (cfile, FSETLOCKING_BYCALLER);
+	if (gethostname(myname, sizeof(myname)) < 0)
+		myname[0] = '\0';
+	mydomain = strchr(myname, '.');
+	if (mydomain==NULL) {
+	    mydomain=myname + strlen(myname);
+	}
+next:
+	while ((t = token())) switch(t) {
+
+	case DEFAULT:
+		usedefault = 1;
+		/* FALL THROUGH */
+
+	case MACHINE:
+		if (!usedefault) {
+			if (token() != ID)
+				continue;
+			/*
+			 * Allow match either for user's input host name
+			 * or official hostname.  Also allow match of
+			 * incompletely-specified host in local domain.
+			 */
+			if (strcasecmp(host, tokval) == 0)
+				goto match;
+/*			if (__strcasecmp(hostname, tokval) == 0)
+				goto match;
+			if ((tmp = strchr(hostname, '.')) != NULL &&
+			    __strcasecmp(tmp, mydomain) == 0 &&
+			    __strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
+			    tokval[tmp - hostname] == '\0')
+				goto match; */
+			if ((tmp = strchr(host, '.')) != NULL &&
+			    strcasecmp(tmp, mydomain) == 0 &&
+			    strncasecmp(host, tokval, tmp - host) == 0 &&
+			    tokval[tmp - host] == '\0')
+				goto match;
+			continue;
+		}
+	match:
+		while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {
+
+		case LOGIN:
+			if (token()) {
+				if (*aname == 0) {
+				  char *newp;
+				  newp = malloc((unsigned) strlen(tokval) + 1);
+				  if (newp == NULL)
+				    {
+				      printf(_("out of memory"));
+				      goto bad;
+				    }
+				  *aname = strcpy(newp, tokval);
+				} else {
+					if (strcmp(*aname, tokval))
+						goto next;
+				}
+			}
+			break;
+		case PASSWD:
+			if (strcmp(*aname, "anonymous") &&
+			    fstat64(fileno(cfile), &stb) >= 0 &&
+			    (stb.st_mode & 077) != 0) {
+	printf(_("Error: .netrc file is readable by others."));
+	printf(_("Remove password or make file unreadable by others."));
+				goto bad;
+			}
+			if (token() && *apass == 0) {
+				char *newp;
+				newp = malloc((unsigned) strlen(tokval) + 1);
+				if (newp == NULL)
+				  {
+				    printf(_("out of memory"));
+				    goto bad;
+				  }
+				*apass = strcpy(newp, tokval);
+			}
+			break;
+		case ACCOUNT:
+#if 0
+			if (fstat64(fileno(cfile), &stb) >= 0
+			    && (stb.st_mode & 077) != 0) {
+	printf("Error: .netrc file is readable by others.");
+	printf("Remove account or make file unreadable by others.");
+				goto bad;
+			}
+			if (token() && *aacct == 0) {
+				*aacct = malloc((unsigned) strlen(tokval) + 1);
+				(void) strcpy(*aacct, tokval);
+			}
+#endif
+			break;
+		case MACDEF:
+#if 0
+			if (proxy) {
+				(void) fclose(cfile);
+				return (0);
+			}
+			while ((c=getc_unlocked(cfile)) != EOF && c == ' '
+			       || c == '\t');
+			if (c == EOF || c == '\n') {
+				printf("Missing macdef name argument.\n");
+				goto bad;
+			}
+			if (macnum == 16) {
+				printf("Limit of 16 macros have already been defined\n");
+				goto bad;
+			}
+			tmp = macros[macnum].mac_name;
+			*tmp++ = c;
+			for (i=0; i < 8 && (c=getc_unlocked(cfile)) != EOF &&
+			    !isspace(c); ++i) {
+				*tmp++ = c;
+			}
+			if (c == EOF) {
+				printf("Macro definition missing null line terminator.\n");
+				goto bad;
+			}
+			*tmp = '\0';
+			if (c != '\n') {
+				while ((c=getc_unlocked(cfile)) != EOF
+				       && c != '\n');
+			}
+			if (c == EOF) {
+				printf("Macro definition missing null line terminator.\n");
+				goto bad;
+			}
+			if (macnum == 0) {
+				macros[macnum].mac_start = macbuf;
+			}
+			else {
+				macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
+			}
+			tmp = macros[macnum].mac_start;
+			while (tmp != macbuf + 4096) {
+				if ((c=getc_unlocked(cfile)) == EOF) {
+				printf("Macro definition missing null line terminator.\n");
+					goto bad;
+				}
+				*tmp = c;
+				if (*tmp == '\n') {
+					if (*(tmp-1) == '\0') {
+					   macros[macnum++].mac_end = tmp - 1;
+					   break;
+					}
+					*tmp = '\0';
+				}
+				tmp++;
+			}
+			if (tmp == macbuf + 4096) {
+				printf("4K macro buffer exceeded\n");
+				goto bad;
+			}
+#endif
+			break;
+		default:
+			printf(_("Unknown .netrc keyword %s"), tokval);
+			break;
+		}
+		goto done;
+	}
+done:
+	(void) fclose(cfile);
+	return (0);
+bad:
+	(void) fclose(cfile);
+	return (-1);
+}
+
+static int
+token()
+{
+	char *cp;
+	int c;
+	int i;
+
+	if (feof_unlocked(cfile) || ferror_unlocked(cfile))
+		return (0);
+	while ((c = getc_unlocked(cfile)) != EOF &&
+	    (c == '\n' || c == '\t' || c == ' ' || c == ','))
+		continue;
+	if (c == EOF)
+		return (0);
+	cp = tokval;
+	if (c == '"') {
+		while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
+			if (c == '\\')
+				c = getc_unlocked(cfile);
+			*cp++ = c;
+		}
+	} else {
+		*cp++ = c;
+		while ((c = getc_unlocked(cfile)) != EOF
+		    && c != '\n' && c != '\t' && c != ' ' && c != ',') {
+			if (c == '\\')
+				c = getc_unlocked(cfile);
+			*cp++ = c;
+		}
+	}
+	*cp = 0;
+	if (tokval[0] == 0)
+		return (0);
+	for (i = 0; i < (int) (sizeof (toktab) / sizeof (toktab[0])); ++i)
+		if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
+			return toktab[i].tval;
+	return (ID);
+}