diff options
author | Steve Dickson <steved@redhat.com> | 2007-04-20 14:56:09 -0400 |
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committer | Steve Dickson <steved@redhat.com> | 2007-04-20 14:56:09 -0400 |
commit | ee5471e0e4bcfab5b4da3faf46c96e5dbb49da47 (patch) | |
tree | 704fe6cab3d309429a2b39b1d35684ac953d943a /src/netname.c | |
download | ti-rpc-ee5471e0e4bcfab5b4da3faf46c96e5dbb49da47.tar.gz |
Initial commit of libtirpc 0.1.7
Signed-off-by: Steve Dickson <steved@redhat.com>
Diffstat (limited to 'src/netname.c')
-rw-r--r-- | src/netname.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/netname.c b/src/netname.c new file mode 100644 index 0000000..fac4441 --- /dev/null +++ b/src/netname.c @@ -0,0 +1,145 @@ +/* + * 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 + */ + +/* + * netname utility routines + * convert from unix names to network names and vice-versa + * This module is operating system dependent! + * What we define here will work with any unix system that has adopted + * the sun NIS domain architecture. + */ + +#include <sys/param.h> +#include <rpc/rpc.h> +#include "rpc_com.h" +#ifdef YP +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#endif +#include <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#ifndef MAXHOSTNAMELEN +#define MAXHOSTNAMELEN 256 +#endif +#ifndef NGROUPS +#define NGROUPS 16 +#endif + +#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) + +#define TYPE_SIGNED(type) (((type) -1) < 0) + +/* +** 302 / 1000 is log10(2.0) rounded up. +** Subtract one for the sign bit if the type is signed; +** add one for integer division truncation; +** add one more for a minus sign if the type is signed. +*/ +#define INT_STRLEN_MAXIMUM(type) \ + ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type)) + +static char *OPSYS = "unix"; + +/* + * Figure out my fully qualified network name + */ +int +getnetname(name) + char name[MAXNETNAMELEN+1]; +{ + uid_t uid; + + uid = geteuid(); + if (uid == 0) { + return (host2netname(name, (char *) NULL, (char *) NULL)); + } else { + return (user2netname(name, uid, (char *) NULL)); + } +} + + +/* + * Convert unix cred to network-name + */ +int +user2netname(netname, uid, domain) + char netname[MAXNETNAMELEN + 1]; + const uid_t uid; + const char *domain; +{ + char *dfltdom; + + if (domain == NULL) { + if (__rpc_get_default_domain(&dfltdom) != 0) { + return (0); + } + domain = dfltdom; + } + if (strlen(domain) + 1 + INT_STRLEN_MAXIMUM(u_long) + 1 + strlen(OPSYS) > MAXNETNAMELEN) { + return (0); + } + (void) sprintf(netname, "%s.%ld@%s", OPSYS, (u_long)uid, domain); + return (1); +} + + +/* + * Convert host to network-name + */ +int +host2netname(netname, host, domain) + char netname[MAXNETNAMELEN + 1]; + const char *host; + const char *domain; +{ + char *dfltdom; + char hostname[MAXHOSTNAMELEN+1]; + + if (domain == NULL) { + if (__rpc_get_default_domain(&dfltdom) != 0) { + return (0); + } + domain = dfltdom; + } + if (host == NULL) { + (void) gethostname(hostname, sizeof(hostname)); + host = hostname; + } + if (strlen(domain) + 1 + strlen(host) + 1 + strlen(OPSYS) > MAXNETNAMELEN) { + return (0); + } + (void) sprintf(netname, "%s.%s@%s", OPSYS, host, domain); + return (1); +} |