/*
- * "$Id: auth.c 6779 2007-08-08 19:49:48Z mike $"
+ * "$Id: auth.c 7720 2008-07-11 22:46:21Z mike $"
*
* Authentication functions for the Common UNIX Printing System (CUPS).
*
- * Copyright 2007-2008 by Apple Inc.
+ * Copyright 2007-2009 by Apple Inc.
* Copyright 1997-2007 by Easy Software Products.
*
* This file contains Kerberos support code, copyright 2006 by
* Contents:
*
* cupsDoAuthentication() - Authenticate a request.
- * DEBUG_gss_printf() - Show debug error messages from GSSAPI...
- * cups_get_gss_creds() - Get CUPS service credentials for authentication.
+ * cups_get_gssname() - Get GSSAPI name for authentication.
+ * cups_gss_printf() - Show error messages from GSSAPI...
* cups_local_auth() - Get the local authorization certificate if
* available/applicable...
*/
*/
#ifdef HAVE_GSSAPI
+static gss_name_t cups_get_gssname(http_t *http, const char *service_name);
# ifdef DEBUG
-static void DEBUG_gss_printf(OM_uint32 major_status, OM_uint32 minor_status,
- const char *message);
+static void cups_gss_printf(OM_uint32 major_status, OM_uint32 minor_status,
+ const char *message);
# else
-# define DEBUG_gss_printf(major, minor, message)
-# endif /* DEBUG */
-static gss_name_t cups_get_gss_creds(http_t *http, const char *service_name);
+# define cups_gss_printf(major, minor, message)
+# endif /* DEBUG */
#endif /* HAVE_GSSAPI */
static int cups_local_auth(http_t *http);
* This function should be called in response to a @code HTTP_UNAUTHORIZED@
* status, prior to resubmitting your request.
*
- * @since CUPS 1.1.20@
+ * @since CUPS 1.1.20/Mac OS X 10.4@
*/
int /* O - 0 on success, -1 on error */
-cupsDoAuthentication(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
- const char *method,/* I - Request method ("GET", "POST", "PUT") */
- const char *resource)
- /* I - Resource path */
+cupsDoAuthentication(
+ http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
+ const char *method, /* I - Request method ("GET", "POST", "PUT") */
+ const char *resource) /* I - Resource path */
{
const char *password; /* Password string */
char prompt[1024], /* Prompt for user */
_cups_globals_t *cg; /* Global data */
- DEBUG_printf(("cupsDoAuthentication(http=%p, method=\"%s\", resource=\"%s\")\n",
+ DEBUG_printf(("cupsDoAuthentication(http=%p, method=\"%s\", resource=\"%s\")",
http, method, resource));
- DEBUG_printf(("cupsDoAuthentication: digest_tries=%d, userpass=\"%s\"\n",
+ DEBUG_printf(("2cupsDoAuthentication: digest_tries=%d, userpass=\"%s\"",
http->digest_tries, http->userpass));
- DEBUG_printf(("cupsDoAuthentication: WWW-Authenticate=\"%s\"\n",
+ DEBUG_printf(("2cupsDoAuthentication: WWW-Authenticate=\"%s\"",
httpGetField(http, HTTP_FIELD_WWW_AUTHENTICATE)));
+ if (!http)
+ http = _cupsConnect();
+
+ if (!http || !method || !resource)
+ return (-1);
+
/*
* Clear the current authentication string...
*/
{
if ((localauth = cups_local_auth(http)) == 0)
{
- DEBUG_printf(("cupsDoAuthentication: authstring=\"%s\"\n",
+ DEBUG_printf(("2cupsDoAuthentication: authstring=\"%s\"",
http->authstring));
if (http->status == HTTP_UNAUTHORIZED)
return (0);
}
else if (localauth == -1)
+ {
+ http->status = HTTP_AUTHORIZATION_CANCELED;
return (-1); /* Error or canceled */
+ }
}
/*
"Digest", 5) != 0;
http->userpass[0] = '\0';
- if ((password = cupsGetPassword(prompt)) == NULL)
+ if ((password = cupsGetPassword2(prompt, http, method, resource)) == NULL)
+ {
+ http->status = HTTP_AUTHORIZATION_CANCELED;
return (-1);
+ }
if (!password[0])
+ {
+ http->status = HTTP_AUTHORIZATION_CANCELED;
return (-1);
+ }
snprintf(http->userpass, sizeof(http->userpass), "%s:%s", cupsUser(),
password);
if (gss_init_sec_context == NULL)
{
- DEBUG_puts("cupsDoAuthentication: Weak-linked GSSAPI/Kerberos framework "
+ DEBUG_puts("1cupsDoAuthentication: Weak-linked GSSAPI/Kerberos framework "
"is not present");
+ http->status = HTTP_AUTHORIZATION_CANCELED;
+
return (-1);
}
# endif /* __APPLE__ */
if (http->status == HTTP_UNAUTHORIZED && http->digest_tries >= 3)
{
- DEBUG_printf(("cupsDoAuthentication: too many Negotiate tries (%d)\n",
+ DEBUG_printf(("1cupsDoAuthentication: too many Negotiate tries (%d)",
http->digest_tries));
+ http->status = HTTP_AUTHORIZATION_CANCELED;
return (-1);
}
if ((gss_service_name = getenv("CUPS_GSSSERVICENAME")) == NULL)
gss_service_name = CUPS_DEFAULT_GSSSERVICENAME;
else
- DEBUG_puts("cupsDoAuthentication: GSS service name set via environment");
+ DEBUG_puts("2cupsDoAuthentication: GSS service name set via "
+ "environment variable");
- http->gssname = cups_get_gss_creds(http, gss_service_name);
+ http->gssname = cups_get_gssname(http, gss_service_name);
}
# ifdef USE_SPNEGO /* We don't implement SPNEGO just yet... */
if (http->gssctx != GSS_C_NO_CONTEXT)
{
- major_status = gss_delete_sec_context(&minor_status, &http->gssctx,
- GSS_C_NO_BUFFER);
+ gss_delete_sec_context(&minor_status, &http->gssctx, GSS_C_NO_BUFFER);
http->gssctx = GSS_C_NO_CONTEXT;
}
major_status = gss_init_sec_context(&minor_status, GSS_C_NO_CREDENTIAL,
&http->gssctx,
http->gssname, http->gssmech,
- GSS_C_DELEG_FLAG | GSS_C_MUTUAL_FLAG |
- GSS_C_INTEG_FLAG,
+#ifdef GSS_C_DELEG_POLICY_FLAG
+ GSS_C_DELEG_POLICY_FLAG |
+#endif /* GSS_C_DELEG_POLICY_FLAG */
+ GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG,
GSS_C_INDEFINITE,
GSS_C_NO_CHANNEL_BINDINGS,
&input_token, &http->gssmech,
if (GSS_ERROR(major_status))
{
-# ifdef DEBUG
- DEBUG_gss_printf(major_status, minor_status,
- "Unable to initialize security context");
-# endif /* DEBUG */
+ cups_gss_printf(major_status, minor_status,
+ "cupsDoAuthentication: Unable to initialize security "
+ "context");
+ http->status = HTTP_AUTHORIZATION_CANCELED;
+
return (-1);
}
if (major_status == GSS_S_CONTINUE_NEEDED)
- DEBUG_gss_printf(major_status, minor_status, "Continuation needed!");
+ cups_gss_printf(major_status, minor_status,
+ "cupsDoAuthentication: Continuation needed!");
if (output_token.length > 0 && output_token.length <= 65536)
{
httpEncode64_2(http->authstring + 10, authsize - 10, output_token.value,
output_token.length);
- major_status = gss_release_buffer(&minor_status, &output_token);
+ gss_release_buffer(&minor_status, &output_token);
}
else
{
- DEBUG_printf(("cupsDoAuthentication: Kerberos credentials too large - "
- "%d bytes!\n", (int)output_token.length));
-
- major_status = gss_release_buffer(&minor_status, &output_token);
+ DEBUG_printf(("1cupsDoAuthentication: Kerberos credentials too large - "
+ "%d bytes!", (int)output_token.length));
+ http->status = HTTP_AUTHORIZATION_CANCELED;
+ gss_release_buffer(&minor_status, &output_token);
return (-1);
}
httpSetAuthString(http, "Digest", digest);
}
- DEBUG_printf(("cupsDoAuthentication: authstring=\"%s\"\n", http->authstring));
+ DEBUG_printf(("1cupsDoAuthentication: authstring=\"%s\"", http->authstring));
return (0);
}
#ifdef HAVE_GSSAPI
-# ifdef DEBUG
-/*
- * 'DEBUG_gss_printf()' - Show debug error messages from GSSAPI...
- */
-
-static void
-DEBUG_gss_printf(OM_uint32 major_status,/* I - Major status code */
- OM_uint32 minor_status,/* I - Minor status code */
- const char *message) /* I - Prefix for error message */
-{
- OM_uint32 err_major_status, /* Major status code for display */
- err_minor_status; /* Minor status code for display */
- OM_uint32 msg_ctx; /* Message context */
- gss_buffer_desc major_status_string = GSS_C_EMPTY_BUFFER,
- /* Major status message */
- minor_status_string = GSS_C_EMPTY_BUFFER;
- /* Minor status message */
-
-
- msg_ctx = 0;
- err_major_status = gss_display_status(&err_minor_status,
- major_status,
- GSS_C_GSS_CODE,
- GSS_C_NO_OID,
- &msg_ctx,
- &major_status_string);
-
- if (!GSS_ERROR(err_major_status))
- err_major_status = gss_display_status(&err_minor_status,
- minor_status,
- GSS_C_MECH_CODE,
- GSS_C_NULL_OID,
- &msg_ctx,
- &minor_status_string);
-
- printf("%s: %s, %s\n", message, (char *)major_status_string.value,
- (char *)minor_status_string.value);
-
- gss_release_buffer(&err_minor_status, &major_status_string);
- gss_release_buffer(&err_minor_status, &minor_status_string);
-}
-# endif /* DEBUG */
-
-
/*
- * 'cups_get_gss_creds()' - Get CUPS service credentials for authentication.
+ * 'cups_get_gssname()' - Get CUPS service credentials for authentication.
*/
static gss_name_t /* O - Server name */
-cups_get_gss_creds(
+cups_get_gssname(
http_t *http, /* I - Connection to server */
const char *service_name) /* I - Service name */
{
fqdn[HTTP_MAX_URI]; /* Server name buffer */
+ DEBUG_printf(("7cups_get_gssname(http=%p, service_name=\"%s\")", http,
+ service_name));
+
+
/*
* Get the hostname...
*/
snprintf(buf, sizeof(buf), "%s@%s", service_name, fqdn);
- DEBUG_printf(("cups_get_gss_creds: Looking up %s...\n", buf));
+ DEBUG_printf(("9cups_get_gssname: Looking up %s...", buf));
token.value = buf;
token.length = strlen(buf);
if (GSS_ERROR(major_status))
{
-# ifdef DEBUG
- DEBUG_gss_printf(major_status, minor_status, "gss_import_name() failed");
-# endif /* DEBUG */
-
+ cups_gss_printf(major_status, minor_status,
+ "cups_get_gssname: gss_import_name() failed");
return (NULL);
}
return (server_name);
}
+
+
+# ifdef DEBUG
+/*
+ * 'cups_gss_printf()' - Show debug error messages from GSSAPI...
+ */
+
+static void
+cups_gss_printf(OM_uint32 major_status,/* I - Major status code */
+ OM_uint32 minor_status,/* I - Minor status code */
+ const char *message) /* I - Prefix for error message */
+{
+ OM_uint32 err_major_status, /* Major status code for display */
+ err_minor_status; /* Minor status code for display */
+ OM_uint32 msg_ctx; /* Message context */
+ gss_buffer_desc major_status_string = GSS_C_EMPTY_BUFFER,
+ /* Major status message */
+ minor_status_string = GSS_C_EMPTY_BUFFER;
+ /* Minor status message */
+
+
+ msg_ctx = 0;
+ err_major_status = gss_display_status(&err_minor_status,
+ major_status,
+ GSS_C_GSS_CODE,
+ GSS_C_NO_OID,
+ &msg_ctx,
+ &major_status_string);
+
+ if (!GSS_ERROR(err_major_status))
+ gss_display_status(&err_minor_status, minor_status, GSS_C_MECH_CODE,
+ GSS_C_NULL_OID, &msg_ctx, &minor_status_string);
+
+ DEBUG_printf(("8%s: %s, %s", message, (char *)major_status_string.value,
+ (char *)minor_status_string.value));
+
+ gss_release_buffer(&err_minor_status, &major_status_string);
+ gss_release_buffer(&err_minor_status, &minor_status_string);
+}
+# endif /* DEBUG */
#endif /* HAVE_GSSAPI */
#else
int pid; /* Current process ID */
FILE *fp; /* Certificate file */
- char filename[1024], /* Certificate filename */
+ char trc[16], /* Try Root Certificate parameter */
+ filename[1024], /* Certificate filename */
certificate[33];/* Certificate string */
_cups_globals_t *cg = _cupsGlobals(); /* Global data */
# if defined(HAVE_AUTHORIZATION_H)
# endif /* HAVE_AUTHORIZATION_H */
- DEBUG_printf(("cups_local_auth(http=%p) hostaddr=%s, hostname=\"%s\"\n",
+ DEBUG_printf(("7cups_local_auth(http=%p) hostaddr=%s, hostname=\"%s\"",
http, httpAddrString(http->hostaddr, filename, sizeof(filename)), http->hostname));
/*
if (!httpAddrLocalhost(http->hostaddr) &&
strcasecmp(http->hostname, "localhost") != 0)
{
- DEBUG_puts("cups_local_auth: Not a local connection!");
+ DEBUG_puts("8cups_local_auth: Not a local connection!");
return (1);
}
http->auth_ref = NULL;
}
- if (httpGetSubField2(http, HTTP_FIELD_WWW_AUTHENTICATE, "authkey",
+ if (!getenv("GATEWAY_INTERFACE") &&
+ httpGetSubField2(http, HTTP_FIELD_WWW_AUTHENTICATE, "authkey",
auth_key, sizeof(auth_key)))
{
status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment,
kAuthorizationFlagDefaults, &http->auth_ref);
if (status != errAuthorizationSuccess)
{
- DEBUG_printf(("cups_local_auth: AuthorizationCreate() returned %d (%s)\n",
+ DEBUG_printf(("8cups_local_auth: AuthorizationCreate() returned %d (%s)",
(int)status, cssmErrorString(status)));
return (-1);
}
httpSetAuthString(http, "AuthRef", buffer);
- DEBUG_printf(("cups_local_auth: Returning authstring = \"%s\"\n",
+ DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"",
http->authstring));
return (0);
}
else if (status == errAuthorizationCanceled)
return (-1);
- DEBUG_printf(("cups_local_auth: AuthorizationCopyRights() returned %d (%s)\n",
+ DEBUG_printf(("9cups_local_auth: AuthorizationCopyRights() returned %d (%s)",
(int)status, cssmErrorString(status)));
/*
}
# endif /* HAVE_AUTHORIZATION_H */
+# if defined(SO_PEERCRED) && defined(AF_LOCAL)
+ /*
+ * See if we can authenticate using the peer credentials provided over a
+ * domain socket; if so, specify "PeerCred username" as the authentication
+ * information...
+ */
+
+ if (http->hostaddr->addr.sa_family == AF_LOCAL &&
+ !getenv("GATEWAY_INTERFACE")) /* Not via CGI programs... */
+ {
+ /*
+ * Verify that the current cupsUser() matches the current UID...
+ */
+
+ struct passwd *pwd; /* Password information */
+ const char *username; /* Current username */
+
+ username = cupsUser();
+
+ if ((pwd = getpwnam(username)) != NULL && pwd->pw_uid == getuid())
+ {
+ httpSetAuthString(http, "PeerCred", username);
+
+ DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"",
+ http->authstring));
+
+ return (0);
+ }
+ }
+# endif /* SO_PEERCRED && AF_LOCAL */
+
/*
* Try opening a certificate file for this PID. If that fails,
* try the root certificate...
snprintf(filename, sizeof(filename), "%s/certs/%d", cg->cups_statedir, pid);
if ((fp = fopen(filename, "r")) == NULL && pid > 0)
{
- DEBUG_printf(("cups_local_auth: Unable to open file %s: %s\n",
- filename, strerror(errno)));
-
-#ifdef HAVE_GSSAPI
/*
- * If local certificate authentication isn't available for this PID,
- * check if we need Kerberos authentication...
+ * No certificate for this PID; see if we can get the root certificate...
*/
+ DEBUG_printf(("9cups_local_auth: Unable to open file %s: %s",
+ filename, strerror(errno)));
+
+#ifdef HAVE_GSSAPI
if (!strncmp(http->fields[HTTP_FIELD_WWW_AUTHENTICATE], "Negotiate", 9))
{
/*
- * Yes, don't try the root certificate...
+ * Kerberos required, don't try the root certificate...
*/
return (1);
}
#endif /* HAVE_GSSAPI */
+ if (!httpGetSubField2(http, HTTP_FIELD_WWW_AUTHENTICATE, "trc", trc,
+ sizeof(trc)))
+ {
+ /*
+ * Scheduler doesn't want us to use the root certificate...
+ */
+
+ return (1);
+ }
+
snprintf(filename, sizeof(filename), "%s/certs/0", cg->cups_statedir);
fp = fopen(filename, "r");
}
httpSetAuthString(http, "Local", certificate);
- DEBUG_printf(("cups_local_auth: Returning authstring = \"%s\"\n",
+ DEBUG_printf(("8cups_local_auth: Returning authstring=\"%s\"",
http->authstring));
return (0);
}
-# if defined(SO_PEERCRED) && defined(AF_LOCAL)
- /*
- * See if we can authenticate using the peer credentials provided over a
- * domain socket; if so, specify "PeerCred username" as the authentication
- * information...
- */
-
- if (http->hostaddr->addr.sa_family == AF_LOCAL &&
- !getenv("GATEWAY_INTERFACE")) /* Not via CGI programs... */
- {
- /*
- * Verify that the current cupsUser() matches the current UID...
- */
-
- struct passwd *pwd; /* Password information */
- const char *username; /* Current username */
-
- username = cupsUser();
-
- if ((pwd = getpwnam(username)) != NULL && pwd->pw_uid == getuid())
- {
- httpSetAuthString(http, "PeerCred", username);
-
- DEBUG_printf(("cups_local_auth: Returning authstring = \"%s\"\n",
- http->authstring));
-
- return (0);
- }
- }
-# endif /* SO_PEERCRED && AF_LOCAL */
-
return (1);
#endif /* WIN32 || __EMX__ */
}
/*
- * End of "$Id: auth.c 6779 2007-08-08 19:49:48Z mike $".
+ * End of "$Id: auth.c 7720 2008-07-11 22:46:21Z mike $".
*/
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