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krb5/krb5-1.6.1-empty.patch

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Treat empty values of KRB5CCNAME (and other variables which can't usefully
be set to empty values) as if they were not set.
diff -ur krb5-1.6.1/src/appl/bsd/krshd.c krb5-1.6.1/src/appl/bsd/krshd.c
--- krb5-1.6.1/src/appl/bsd/krshd.c 2006-10-15 03:50:16.000000000 -0400
+++ krb5-1.6.1/src/appl/bsd/krshd.c 2007-05-18 19:51:18.000000000 -0400
@@ -1438,7 +1438,7 @@
* child's environment. This can't really have
* a fixed position because tz may or may not be set.
*/
- if (getenv("KRB5CCNAME")) {
+ if (getenv("KRB5CCNAME") && getenv("KRB5CCNAME")[0]) {
int i;
char *buf2 = (char *)malloc(strlen(getenv("KRB5CCNAME"))
+strlen("KRB5CCNAME=")+1);
diff -ur krb5-1.6.1/src/appl/bsd/login.c krb5-1.6.1/src/appl/bsd/login.c
--- krb5-1.6.1/src/appl/bsd/login.c 2006-08-08 15:26:40.000000000 -0400
+++ krb5-1.6.1/src/appl/bsd/login.c 2007-05-18 19:49:32.000000000 -0400
@@ -528,7 +528,7 @@
login_get_kconf(kcontext);
/* Set up the credential cache environment variable */
- if (!getenv(KRB5_ENV_CCNAME)) {
+ if (!getenv(KRB5_ENV_CCNAME) || !getenv(KRB5_ENV_CCNAME)[0]) {
sprintf(ccfile, "FILE:/tmp/krb5cc_p%ld", (long) getpid());
setenv(KRB5_ENV_CCNAME, ccfile, 1);
krb5_cc_set_default_name(kcontext, ccfile);
@@ -1763,7 +1763,7 @@
setenv ("TZ", tz, 1);
#endif
- if (ccname)
+ if (ccname && ccname[0])
setenv("KRB5CCNAME", ccname, 1);
setenv("HOME", pwd->pw_dir, 1);
diff -ur krb5-1.6.1/src/appl/bsd/v4rcp.c krb5-1.6.1/src/appl/bsd/v4rcp.c
--- krb5-1.6.1/src/appl/bsd/v4rcp.c 2006-08-08 15:26:40.000000000 -0400
+++ krb5-1.6.1/src/appl/bsd/v4rcp.c 2007-05-18 19:50:40.000000000 -0400
@@ -1060,7 +1060,7 @@
fprintf(stderr, "v4rcp: couldn't get local address (KRB5LOCALADDR)\n");
exit(1);
}
- if ((envaddr = getenv("KRB5REMOTEADDR"))) {
+ if ((envaddr = getenv("KRB5REMOTEADDR")) && envaddr[0]) {
#ifdef HAVE_INET_ATON
inet_aton(envaddr, &foreign.sin_addr);
#else
@@ -1068,7 +1068,7 @@
#endif
foreign.sin_family = AF_INET;
envaddr = getenv("KRB5REMOTEPORT");
- if (envaddr)
+ if (envaddr && envaddr[0])
foreign.sin_port = htons(atoi(envaddr));
else
foreign.sin_port = 0;
diff -ur krb5-1.6.1/src/appl/telnet/libtelnet/kerberos5.c krb5-1.6.1/src/appl/telnet/libtelnet/kerberos5.c
--- krb5-1.6.1/src/appl/telnet/libtelnet/kerberos5.c 2006-12-01 16:27:28.000000000 -0500
+++ krb5-1.6.1/src/appl/telnet/libtelnet/kerberos5.c 2007-05-18 19:48:51.000000000 -0400
@@ -205,7 +205,7 @@
return;
ccname = getenv("KRB5CCNAME");
- if (ccname) {
+ if (ccname && ccname[0]) {
retval = krb5_cc_resolve(telnet_context, ccname, &ccache);
if (!retval)
retval = krb5_cc_destroy(telnet_context, ccache);
diff -ur krb5-1.6.1/src/lib/kadm5/alt_prof.c krb5-1.6.1/src/lib/kadm5/alt_prof.c
--- krb5-1.6.1/src/lib/kadm5/alt_prof.c 2006-05-15 21:45:00.000000000 -0400
+++ krb5-1.6.1/src/lib/kadm5/alt_prof.c 2007-05-18 19:17:53.000000000 -0400
@@ -82,7 +82,8 @@
if (i > 0)
krb5_config_len--;
if (envname == NULL
- || (kdc_config = getenv(envname)) == NULL)
+ || (kdc_config = getenv(envname)) == NULL
+ || (kdc_config[0] == '\0'))
kdc_config = fname;
if (kdc_config == NULL)
kdc_config_len = 0;
@@ -494,7 +495,8 @@
!krb5_aprof_get_string(aprofile, hierarchy, TRUE, &svalue)) {
params.mask |= KADM5_CONFIG_ADMIN_KEYTAB;
params.admin_keytab = svalue;
- } else if ((params.admin_keytab = (char *) getenv("KRB5_KTNAME"))) {
+ } else if ((params.admin_keytab = (char *) getenv("KRB5_KTNAME")) &&
+ (params.admin_keytab[0] != '\0')) {
params.admin_keytab = strdup(params.admin_keytab);
if (params.admin_keytab)
params.mask |= KADM5_CONFIG_ADMIN_KEYTAB;
diff -ur krb5-1.6.1/src/lib/krb4/g_cnffile.c krb5-1.6.1/src/lib/krb4/g_cnffile.c
--- krb5-1.6.1/src/lib/krb4/g_cnffile.c 2003-06-06 10:44:33.000000000 -0400
+++ krb5-1.6.1/src/lib/krb4/g_cnffile.c 2007-05-18 19:57:48.000000000 -0400
@@ -89,7 +89,7 @@
/* standard V4 override first */
s = getenv("KRB_CONF");
- if (s) cnffile = fopen(s,"r");
+ if (s && s[0]) cnffile = fopen(s,"r");
/* if that's wrong, use V5 config */
if (!cnffile) cnffile = krb__v5_get_file("krb4_config");
/* and if V5 config doesn't have it, go to hard-coded values */
@@ -109,7 +109,7 @@
/* standard (not really) V4 override first */
s = getenv("KRB_REALMS");
- if (s) realmsfile = fopen(s,"r");
+ if (s && s[0]) realmsfile = fopen(s,"r");
if (!realmsfile) realmsfile = krb__v5_get_file("krb4_realms");
if (!realmsfile) realmsfile = fopen(KRB_RLM_TRANS, "r");
diff -ur krb5-1.6.1/src/lib/krb4/tkt_string.c krb5-1.6.1/src/lib/krb4/tkt_string.c
--- krb5-1.6.1/src/lib/krb4/tkt_string.c 2006-03-11 17:23:28.000000000 -0500
+++ krb5-1.6.1/src/lib/krb4/tkt_string.c 2007-05-18 19:57:57.000000000 -0400
@@ -67,7 +67,7 @@
if (!*krb_ticket_string) {
env = getenv("KRBTKFILE");
- if (env) {
+ if (env && env[0]) {
(void) strncpy(krb_ticket_string, env,
sizeof(krb_ticket_string)-1);
krb_ticket_string[sizeof(krb_ticket_string)-1] = '\0';
diff -ur krb5-1.6.1/src/lib/krb5/ccache/cccursor.c krb5-1.6.1/src/lib/krb5/ccache/cccursor.c
--- krb5-1.6.1/src/lib/krb5/ccache/cccursor.c 2006-11-07 15:18:31.000000000 -0500
+++ krb5-1.6.1/src/lib/krb5/ccache/cccursor.c 2007-05-18 19:19:11.000000000 -0400
@@ -136,7 +136,7 @@
/* fall through */
case CCCURSOR_ENV:
name = getenv(KRB5_ENV_CCNAME);
- if (name != NULL) {
+ if ((name != NULL) && (name[0] != '\0')) {
cursor->pos = CCCURSOR_OS;
ret = cccol_do_resolve(context, cursor, name, ccache);
if (ret)
diff -ur krb5-1.6.1/src/lib/krb5/os/ccdefname.c krb5-1.6.1/src/lib/krb5/os/ccdefname.c
--- krb5-1.6.1/src/lib/krb5/os/ccdefname.c 2007-03-29 20:36:20.000000000 -0400
+++ krb5-1.6.1/src/lib/krb5/os/ccdefname.c 2007-05-18 18:32:20.000000000 -0400
@@ -292,7 +292,7 @@
/* try the environment variable first */
new_ccname = getenv(KRB5_ENV_CCNAME);
- if (new_ccname == NULL) {
+ if ((new_ccname == NULL) || (new_ccname[0] == '\0')) {
/* fall back on the default ccache name for the OS */
new_ccname = new_ccbuf;
err = get_from_os (new_ccbuf, sizeof (new_ccbuf));
diff -ur krb5-1.6.1/src/lib/krb5/os/init_os_ctx.c krb5-1.6.1/src/lib/krb5/os/init_os_ctx.c
--- krb5-1.6.1/src/lib/krb5/os/init_os_ctx.c 2007-04-10 17:51:46.000000000 -0400
+++ krb5-1.6.1/src/lib/krb5/os/init_os_ctx.c 2007-05-18 18:32:20.000000000 -0400
@@ -196,7 +196,7 @@
if (!secure)
{
char *env = getenv("KRB5_CONFIG");
- if (env)
+ if (env && env[0])
{
name = malloc(strlen(env) + 1);
if (!name) return ENOMEM;
@@ -250,7 +250,7 @@
filepath = DEFAULT_SECURE_PROFILE_PATH;
} else {
filepath = getenv("KRB5_CONFIG");
- if (!filepath) filepath = DEFAULT_PROFILE_PATH;
+ if (!filepath || !(filepath[0])) filepath = DEFAULT_PROFILE_PATH;
}
/* count the distinct filename components */
@@ -297,7 +297,7 @@
profile_filespec_t *newfiles;
file = getenv(KDC_PROFILE_ENV);
- if (file == NULL)
+ if ((file == NULL) || (file[0] == '\0'))
file = DEFAULT_KDC_PROFILE;
for (count = 0; (*pfiles)[count]; count++)
diff -ur krb5-1.6.1/src/lib/krb5/os/ktdefname.c krb5-1.6.1/src/lib/krb5/os/ktdefname.c
--- krb5-1.6.1/src/lib/krb5/os/ktdefname.c 2002-09-03 15:29:37.000000000 -0400
+++ krb5-1.6.1/src/lib/krb5/os/ktdefname.c 2007-05-18 19:19:28.000000000 -0400
@@ -47,7 +47,7 @@
return KRB5_CONFIG_NOTENUFSPACE;
strcpy(name, krb5_overridekeyname);
} else if ((context->profile_secure == FALSE) &&
- (cp = getenv("KRB5_KTNAME"))) {
+ (cp = getenv("KRB5_KTNAME")) && (cp[0] != '\0')) {
if ((size_t) namesize < (strlen(cp)+1))
return KRB5_CONFIG_NOTENUFSPACE;
strcpy(name, cp);
diff -ur krb5-1.6.1/src/lib/krb5/rcache/rc_base.c krb5-1.6.1/src/lib/krb5/rcache/rc_base.c
--- krb5-1.6.1/src/lib/krb5/rcache/rc_base.c 2006-06-08 16:01:44.000000000 -0400
+++ krb5-1.6.1/src/lib/krb5/rcache/rc_base.c 2007-05-18 19:18:48.000000000 -0400
@@ -94,7 +94,7 @@
char * krb5_rc_default_type(krb5_context context)
{
char *s;
- if ((s = getenv("KRB5RCACHETYPE")))
+ if ((s = getenv("KRB5RCACHETYPE")) && (s[0] != '\0'))
return s;
else
return "dfl";
@@ -103,7 +103,7 @@
char * krb5_rc_default_name(krb5_context context)
{
char *s;
- if ((s = getenv("KRB5RCACHENAME")))
+ if ((s = getenv("KRB5RCACHENAME")) && (s[0] != '\0'))
return s;
else
return (char *) 0;
diff -ur krb5-1.6.1/src/lib/krb5/rcache/rc_io.c krb5-1.6.1/src/lib/krb5/rcache/rc_io.c
--- krb5-1.6.1/src/lib/krb5/rcache/rc_io.c 2006-12-18 18:11:28.000000000 -0500
+++ krb5-1.6.1/src/lib/krb5/rcache/rc_io.c 2007-05-18 18:32:20.000000000 -0400
@@ -47,7 +47,7 @@
{
char *dir;
- if (!(dir = getenv("KRB5RCACHEDIR"))) {
+ if (!(dir = getenv("KRB5RCACHEDIR")) || !dir[0]) {
#if defined(_WIN32)
if (!(dir = getenv("TEMP")))
if (!(dir = getenv("TMP")))
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