cleanup GSSAPI code
This commit is contained in:
Petr Lautrbach
parent
e40d5d19d9
commit
99076b0f8b
@ -135,147 +135,6 @@ diff -up openssh-6.3p1/Makefile.in.gsskex openssh-6.3p1/Makefile.in
|
||||
loginrec.o auth-pam.o auth-shadow.o auth-sia.o md5crypt.o \
|
||||
sftp-server.o sftp-common.o \
|
||||
roaming_common.o roaming_serv.o \
|
||||
diff -up openssh-6.3p1/auth-krb5.c.gsskex openssh-6.3p1/auth-krb5.c
|
||||
--- openssh-6.3p1/auth-krb5.c.gsskex 2013-08-04 13:48:41.000000000 +0200
|
||||
+++ openssh-6.3p1/auth-krb5.c 2013-10-11 15:43:50.261299742 +0200
|
||||
@@ -50,6 +50,7 @@
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
+#include <sys/stat.h>
|
||||
#include <krb5.h>
|
||||
|
||||
extern ServerOptions options;
|
||||
@@ -77,6 +78,7 @@ auth_krb5_password(Authctxt *authctxt, c
|
||||
#endif
|
||||
krb5_error_code problem;
|
||||
krb5_ccache ccache = NULL;
|
||||
+ const char *ccache_type;
|
||||
int len;
|
||||
char *client, *platform_client;
|
||||
const char *errmsg;
|
||||
@@ -177,12 +179,30 @@ auth_krb5_password(Authctxt *authctxt, c
|
||||
goto out;
|
||||
#endif
|
||||
|
||||
+ ccache_type = krb5_cc_get_type(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
|
||||
authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
|
||||
|
||||
- len = strlen(authctxt->krb5_ticket_file) + 6;
|
||||
+ if (authctxt->krb5_ticket_file[0] == ':')
|
||||
+ authctxt->krb5_ticket_file++;
|
||||
+
|
||||
+ len = strlen(authctxt->krb5_ticket_file) + strlen(ccache_type);
|
||||
authctxt->krb5_ccname = xmalloc(len);
|
||||
- snprintf(authctxt->krb5_ccname, len, "FILE:%s",
|
||||
+
|
||||
+#ifdef USE_CCAPI
|
||||
+ snprintf(authctxt->krb5_ccname, len, "API:%s",
|
||||
authctxt->krb5_ticket_file);
|
||||
+#else
|
||||
+ snprintf(authctxt->krb5_ccname, len, "%s:%s",
|
||||
+ ccache_type, authctxt->krb5_ticket_file);
|
||||
+#endif
|
||||
+
|
||||
+ if (strcmp(ccache_type, "DIR") == 0) {
|
||||
+ char *p;
|
||||
+ p = strrchr(authctxt->krb5_ccname, '/');
|
||||
+ if (p)
|
||||
+ *p = '\0';
|
||||
+ }
|
||||
+
|
||||
|
||||
#ifdef USE_PAM
|
||||
if (options.use_pam)
|
||||
@@ -221,10 +241,30 @@ auth_krb5_password(Authctxt *authctxt, c
|
||||
void
|
||||
krb5_cleanup_proc(Authctxt *authctxt)
|
||||
{
|
||||
+ struct stat krb5_ccname_stat;
|
||||
+ char krb5_ccname[128], *krb5_ccname_dir_start, *krb5_ccname_dir_end;
|
||||
+
|
||||
debug("krb5_cleanup_proc called");
|
||||
if (authctxt->krb5_fwd_ccache) {
|
||||
krb5_cc_destroy(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
|
||||
authctxt->krb5_fwd_ccache = NULL;
|
||||
+
|
||||
+ strncpy(krb5_ccname, authctxt->krb5_ccname, sizeof(krb5_ccname) - 10);
|
||||
+ krb5_ccname_dir_start = strchr(krb5_ccname, ':') + 1;
|
||||
+ strcat(krb5_ccname_dir_start, "/primary");
|
||||
+
|
||||
+ if (stat(krb5_ccname_dir_start, &krb5_ccname_stat) == 0) {
|
||||
+ if (unlink(krb5_ccname_dir_start) == 0) {
|
||||
+ krb5_ccname_dir_end = strrchr(krb5_ccname_dir_start, '/');
|
||||
+ *krb5_ccname_dir_end = '\0';
|
||||
+ if (rmdir(krb5_ccname_dir_start) == -1)
|
||||
+ debug("cache dir '%s' remove failed: %s", krb5_ccname_dir_start, strerror(errno));
|
||||
+ }
|
||||
+ else
|
||||
+ debug("cache primary file '%s', remove failed: %s",
|
||||
+ krb5_ccname_dir_start, strerror(errno)
|
||||
+ );
|
||||
+ }
|
||||
}
|
||||
if (authctxt->krb5_user) {
|
||||
krb5_free_principal(authctxt->krb5_ctx, authctxt->krb5_user);
|
||||
@@ -239,31 +279,45 @@ krb5_cleanup_proc(Authctxt *authctxt)
|
||||
#ifndef HEIMDAL
|
||||
krb5_error_code
|
||||
ssh_krb5_cc_gen(krb5_context ctx, krb5_ccache *ccache) {
|
||||
- int tmpfd, ret, oerrno;
|
||||
- char ccname[40];
|
||||
+ int ret, oerrno;
|
||||
+ char ccname[128];
|
||||
+#ifdef USE_CCAPI
|
||||
+ char cctemplate[] = "API:krb5cc_%d";
|
||||
+#else
|
||||
mode_t old_umask;
|
||||
+ char cctemplate[] = "DIR:/run/user/%d/krb5cc_XXXXXXXXXX";
|
||||
+ char *tmpdir;
|
||||
+#endif
|
||||
|
||||
- ret = snprintf(ccname, sizeof(ccname),
|
||||
- "FILE:/tmp/krb5cc_%d_XXXXXXXXXX", geteuid());
|
||||
+ ret = snprintf(ccname, sizeof(ccname), cctemplate, geteuid());
|
||||
if (ret < 0 || (size_t)ret >= sizeof(ccname))
|
||||
return ENOMEM;
|
||||
|
||||
- old_umask = umask(0177);
|
||||
- tmpfd = mkstemp(ccname + strlen("FILE:"));
|
||||
+#ifndef USE_CCAPI
|
||||
+ old_umask = umask(0077);
|
||||
+ tmpdir = mkdtemp(ccname + strlen("DIR:"));
|
||||
oerrno = errno;
|
||||
+ if (tmpdir == NULL && errno == ENOENT) {
|
||||
+ /* /run/user/uid doesn't exist -> fallback to /tmp */
|
||||
+ ret = snprintf(ccname, sizeof(ccname), "DIR:/tmp/krb5cc_%d_XXXXXXXXXX", geteuid());
|
||||
+ if (ret < 0 || (size_t)ret >= sizeof(ccname))
|
||||
+ return ENOMEM;
|
||||
+ tmpdir = mkdtemp(ccname + strlen("DIR:"));
|
||||
+ oerrno = errno;
|
||||
+ }
|
||||
+
|
||||
umask(old_umask);
|
||||
- if (tmpfd == -1) {
|
||||
- logit("mkstemp(): %.100s", strerror(oerrno));
|
||||
+ if (tmpdir == NULL) {
|
||||
+ logit("mkdtemp(): %s - %.100s", ccname, strerror(oerrno));
|
||||
return oerrno;
|
||||
}
|
||||
|
||||
- if (fchmod(tmpfd,S_IRUSR | S_IWUSR) == -1) {
|
||||
+ if (chmod(tmpdir, S_IRUSR | S_IWUSR | S_IXUSR) == -1) {
|
||||
oerrno = errno;
|
||||
- logit("fchmod(): %.100s", strerror(oerrno));
|
||||
- close(tmpfd);
|
||||
+ logit("chmod(): %s - %.100s", ccname, strerror(oerrno));
|
||||
return oerrno;
|
||||
}
|
||||
- close(tmpfd);
|
||||
+#endif
|
||||
|
||||
return (krb5_cc_resolve(ctx, ccname, ccache));
|
||||
}
|
||||
diff -up openssh-6.3p1/auth2-gss.c.gsskex openssh-6.3p1/auth2-gss.c
|
||||
--- openssh-6.3p1/auth2-gss.c.gsskex 2013-10-11 15:15:17.213216506 +0200
|
||||
+++ openssh-6.3p1/auth2-gss.c 2013-10-11 15:15:17.283216181 +0200
|
||||
@ -779,7 +638,7 @@ diff -up openssh-6.3p1/gss-genr.c.gsskex openssh-6.3p1/gss-genr.c
|
||||
#endif /* GSSAPI */
|
||||
diff -up openssh-6.3p1/gss-serv-krb5.c.gsskex openssh-6.3p1/gss-serv-krb5.c
|
||||
--- openssh-6.3p1/gss-serv-krb5.c.gsskex 2013-07-20 05:35:45.000000000 +0200
|
||||
+++ openssh-6.3p1/gss-serv-krb5.c 2013-10-11 15:26:02.165189578 +0200
|
||||
+++ openssh-6.3p1/gss-serv-krb5.c 2013-10-23 21:48:20.558346236 +0200
|
||||
@@ -120,7 +120,7 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_cl
|
||||
krb5_error_code problem;
|
||||
krb5_principal princ;
|
||||
@ -789,7 +648,7 @@ diff -up openssh-6.3p1/gss-serv-krb5.c.gsskex openssh-6.3p1/gss-serv-krb5.c
|
||||
const char *errmsg;
|
||||
|
||||
if (client->creds == NULL) {
|
||||
@@ -174,11 +174,25 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_cl
|
||||
@@ -174,11 +174,26 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_cl
|
||||
return;
|
||||
}
|
||||
|
||||
@ -814,12 +673,18 @@ diff -up openssh-6.3p1/gss-serv-krb5.c.gsskex openssh-6.3p1/gss-serv-krb5.c
|
||||
+ if (p)
|
||||
+ *p = '\0';
|
||||
+ }
|
||||
+ if ((strcmp(new_cctype, "FILE") == 0) || (strcmp(new_cctype, "DIR") == 0))
|
||||
+ client->store.filename = xstrdup(new_ccname);
|
||||
+#endif
|
||||
|
||||
#ifdef USE_PAM
|
||||
if (options.use_pam)
|
||||
@@ -190,6 +204,71 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_cl
|
||||
@@ -187,9 +202,76 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_cl
|
||||
|
||||
krb5_cc_close(krb_context, ccache);
|
||||
|
||||
+ client->store.data = krb_context;
|
||||
+
|
||||
return;
|
||||
}
|
||||
|
||||
@ -891,7 +756,7 @@ diff -up openssh-6.3p1/gss-serv-krb5.c.gsskex openssh-6.3p1/gss-serv-krb5.c
|
||||
ssh_gssapi_mech gssapi_kerberos_mech = {
|
||||
"toWM5Slw5Ew8Mqkay+al2g==",
|
||||
"Kerberos",
|
||||
@@ -197,7 +276,8 @@ ssh_gssapi_mech gssapi_kerberos_mech = {
|
||||
@@ -197,7 +279,8 @@ ssh_gssapi_mech gssapi_kerberos_mech = {
|
||||
NULL,
|
||||
&ssh_gssapi_krb5_userok,
|
||||
NULL,
|
||||
@ -903,7 +768,7 @@ diff -up openssh-6.3p1/gss-serv-krb5.c.gsskex openssh-6.3p1/gss-serv-krb5.c
|
||||
#endif /* KRB5 */
|
||||
diff -up openssh-6.3p1/gss-serv.c.gsskex openssh-6.3p1/gss-serv.c
|
||||
--- openssh-6.3p1/gss-serv.c.gsskex 2013-07-20 05:35:45.000000000 +0200
|
||||
+++ openssh-6.3p1/gss-serv.c 2013-10-11 15:27:32.889763132 +0200
|
||||
+++ openssh-6.3p1/gss-serv.c 2013-10-23 21:51:52.212347754 +0200
|
||||
@@ -45,15 +45,20 @@
|
||||
#include "channels.h"
|
||||
#include "session.h"
|
||||
@ -1037,11 +902,11 @@ diff -up openssh-6.3p1/gss-serv.c.gsskex openssh-6.3p1/gss-serv.c
|
||||
+ ssh_gssapi_error(ctx);
|
||||
+ return (ctx->major);
|
||||
+ }
|
||||
|
||||
- gss_buffer_desc ename;
|
||||
+
|
||||
+ ctx->major = gss_compare_name(&ctx->minor, client->name,
|
||||
+ new_name, &equal);
|
||||
+
|
||||
|
||||
- gss_buffer_desc ename;
|
||||
+ if (GSS_ERROR(ctx->major)) {
|
||||
+ ssh_gssapi_error(ctx);
|
||||
+ return (ctx->major);
|
||||
@ -1088,41 +953,33 @@ diff -up openssh-6.3p1/gss-serv.c.gsskex openssh-6.3p1/gss-serv.c
|
||||
/* We can't copy this structure, so we just move the pointer to it */
|
||||
client->creds = ctx->client_creds;
|
||||
ctx->client_creds = GSS_C_NO_CREDENTIAL;
|
||||
@@ -292,11 +378,33 @@ ssh_gssapi_getclient(Gssctxt *ctx, ssh_g
|
||||
@@ -292,11 +378,20 @@ ssh_gssapi_getclient(Gssctxt *ctx, ssh_g
|
||||
void
|
||||
ssh_gssapi_cleanup_creds(void)
|
||||
{
|
||||
+ struct stat krb5_ccname_stat;
|
||||
+ char krb5_ccname[128], *krb5_ccname_dir_end;
|
||||
- if (gssapi_client.store.filename != NULL) {
|
||||
- /* Unlink probably isn't sufficient */
|
||||
- debug("removing gssapi cred file\"%s\"",
|
||||
- gssapi_client.store.filename);
|
||||
- unlink(gssapi_client.store.filename);
|
||||
+ krb5_ccache ccache = NULL;
|
||||
+ krb5_error_code problem;
|
||||
+
|
||||
if (gssapi_client.store.filename != NULL) {
|
||||
/* Unlink probably isn't sufficient */
|
||||
debug("removing gssapi cred file\"%s\"",
|
||||
gssapi_client.store.filename);
|
||||
unlink(gssapi_client.store.filename);
|
||||
+
|
||||
+ /* Ticket cache: DIR::/run/user/13558/krb5cc_T9eDKSQvzb/tkt */
|
||||
+ /* same code as in auth-krb5.c:krb5_cleanup_proc */
|
||||
+ strncpy(krb5_ccname, gssapi_client.store.filename, sizeof(krb5_ccname) - 10);
|
||||
+ krb5_ccname_dir_end = strrchr(krb5_ccname, '/');
|
||||
+ if (krb5_ccname_dir_end != NULL)
|
||||
+ strcpy(krb5_ccname_dir_end, "/primary");
|
||||
+
|
||||
+ if (stat(krb5_ccname, &krb5_ccname_stat) == 0) {
|
||||
+ if (unlink(krb5_ccname) == 0) {
|
||||
+ *krb5_ccname_dir_end = '\0';
|
||||
+ if (rmdir(krb5_ccname) == -1)
|
||||
+ debug("cache dir '%s' remove failed: %s", krb5_ccname, strerror(errno));
|
||||
+ }
|
||||
+ else
|
||||
+ debug("cache primary file '%s', remove failed: %s",
|
||||
+ krb5_ccname, strerror(errno)
|
||||
+ );
|
||||
+ if (gssapi_client.store.data != NULL) {
|
||||
+ if ((problem = krb5_cc_resolve(gssapi_client.store.data, gssapi_client.store.envval, &ccache))) {
|
||||
+ debug("%s: krb5_cc_resolve(): %.100s", __func__,
|
||||
+ krb5_get_err_text(gssapi_client.store.data, problem));
|
||||
+ } else if ((problem = krb5_cc_destroy(gssapi_client.store.data, ccache))) {
|
||||
+ debug("%s: krb5_cc_resolve(): %.100s", __func__,
|
||||
+ krb5_get_err_text(gssapi_client.store.data, problem));
|
||||
+ } else {
|
||||
+ krb5_free_context(gssapi_client.store.data);
|
||||
+ gssapi_client.store.data = NULL;
|
||||
+ }
|
||||
}
|
||||
}
|
||||
|
||||
@@ -329,7 +437,7 @@ ssh_gssapi_do_child(char ***envp, u_int
|
||||
@@ -329,7 +424,7 @@ ssh_gssapi_do_child(char ***envp, u_int
|
||||
|
||||
/* Privileged */
|
||||
int
|
||||
@ -1131,7 +988,7 @@ diff -up openssh-6.3p1/gss-serv.c.gsskex openssh-6.3p1/gss-serv.c
|
||||
{
|
||||
OM_uint32 lmin;
|
||||
|
||||
@@ -339,9 +447,11 @@ ssh_gssapi_userok(char *user)
|
||||
@@ -339,9 +434,11 @@ ssh_gssapi_userok(char *user)
|
||||
return 0;
|
||||
}
|
||||
if (gssapi_client.mech && gssapi_client.mech->userok)
|
||||
@ -1145,7 +1002,7 @@ diff -up openssh-6.3p1/gss-serv.c.gsskex openssh-6.3p1/gss-serv.c
|
||||
/* Destroy delegated credentials if userok fails */
|
||||
gss_release_buffer(&lmin, &gssapi_client.displayname);
|
||||
gss_release_buffer(&lmin, &gssapi_client.exportedname);
|
||||
@@ -354,14 +464,90 @@ ssh_gssapi_userok(char *user)
|
||||
@@ -354,14 +451,90 @@ ssh_gssapi_userok(char *user)
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user