/*
- * "$Id: auth.c 6649 2007-07-11 21:46:42Z mike $"
+ * "$Id: auth.c 6947 2007-09-12 21:09:49Z mike $"
*
* Authorization routines for the Common UNIX Printing System (CUPS).
*
- * Copyright 2007 by Apple Inc.
+ * Copyright 2007-2008 by Apple Inc.
* Copyright 1997-2007 by Easy Software Products, all rights reserved.
*
* This file contains Kerberos support code, copyright 2006 by
* cupsdAddName() - Add a name to a location...
* cupsdAllowHost() - Add a host name that is allowed to access the
* location.
- * cupsdAllowIP() - Add an IP address or network that is allowed
- * to access the location.
+ * cupsdAllowIP() - Add an IP address or network that is allowed to
+ * access the location.
* cupsdAuthorize() - Validate any authorization credentials.
+ * cupsdCheckAccess() - Check whether the given address is allowed to
+ * access a location.
* cupsdCheckAuth() - Check authorization masks.
* cupsdCheckGroup() - Check for a user's group membership.
* cupsdCopyLocation() - Make a copy of a location...
* cupsdIsAuthorized() - Check to see if the user is authorized...
* add_allow() - Add an allow mask to the location.
* add_deny() - Add a deny mask to the location.
+ * check_authref() - Check if an authorization services reference
+ * has the supplied right.
* compare_locations() - Compare two locations.
* cups_crypt() - Encrypt the password using the DES or MD5
* algorithms, as needed.
* get_md5_password() - Get an MD5 password.
* pam_func() - PAM conversation function.
* to64() - Base64-encode an integer value...
- * check_authref() - Check an authorization services reference.
*/
/*
extern const char *cssmErrorString(int error);
# endif /* HAVE_SECBASEPRIV_H */
#endif /* HAVE_AUTHORIZATION_H */
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif /* HAVE_SYS_PARAM_H */
#ifdef HAVE_SYS_UCRED_H
# include <sys/ucred.h>
typedef struct xucred cupsd_ucred_t;
* Initialize the record and copy the name over...
*/
- temp->location = strdup(location);
- temp->length = strlen(temp->location);
+ if ((temp->location = strdup(location)) == NULL)
+ {
+ free(temp);
+ return (NULL);
+ }
+
+ temp->length = strlen(temp->location);
cupsArrayAdd(Locations, temp);
int type; /* Authentication type */
const char *authorization; /* Pointer into Authorization string */
char *ptr, /* Pointer into string */
- username[65], /* Username string */
+ username[256], /* Username string */
password[33]; /* Password string */
const char *localuser; /* Certificate username */
char nonce[HTTP_MAX_VALUE], /* Nonce value from client */
*/
con->best = cupsdFindBest(con->uri, con->http.state);
+ con->type = AUTH_NONE;
cupsdLogMessage(CUPSD_LOG_DEBUG2,
"cupsdAuthorize: con->uri=\"%s\", con->best=%p(%s)",
con->uri, con->best, con->best ? con->best->location : "");
if (con->best && con->best->type != AUTH_NONE)
- type = con->best->type;
+ {
+ if (con->best->type == AUTH_DEFAULT)
+ type = DefaultAuthType;
+ else
+ type = con->best->type;
+ }
else
type = DefaultAuthType;
}
#endif /* HAVE_AUTHORIZATION_H */
- if (type == AUTH_NONE)
- {
- /*
- * No authorization required, return early...
- */
-
- cupsdLogMessage(CUPSD_LOG_DEBUG,
- "cupsdAuthorize: No authentication required.");
- return;
- }
- else if (!*authorization)
+ if (!*authorization)
{
/*
* No authorization data provided, return early...
if (authinfo->count == 1)
strlcpy(username, authinfo->items[0].value, sizeof(username));
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: Authorized as %s using AuthRef",
+ username);
+
AuthorizationFreeItemSet(authinfo);
+
+ con->type = AUTH_BASIC;
}
#endif /* HAVE_AUTHORIZATION_H */
#if defined(SO_PEERCRED) && defined(AF_LOCAL)
}
strlcpy(username, authorization + 9, sizeof(username));
+
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: Authorized as %s using PeerCred",
+ username);
+
+ con->type = AUTH_BASIC;
}
#endif /* SO_PEERCRED && AF_LOCAL */
else if (!strncmp(authorization, "Local", 5) &&
authorization ++;
if ((localuser = cupsdFindCert(authorization)) != NULL)
+ {
strlcpy(username, localuser, sizeof(username));
+
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: Authorized as %s using Local",
+ username);
+ }
else
{
cupsdLogMessage(CUPSD_LOG_ERROR,
"found!");
return;
}
+
+ con->type = AUTH_BASIC;
}
- else if (!strncmp(authorization, "Basic", 5) &&
- (type == AUTH_BASIC || type == AUTH_BASICDIGEST))
+ else if (!strncmp(authorization, "Basic", 5))
{
/*
* Get the Basic authentication data...
switch (type)
{
+ default :
case AUTH_BASIC :
{
#if HAVE_LIBPAM
return;
}
+# if defined(HAVE_PAM_SET_ITEM) && defined(PAM_RHOST)
+ pamerr = pam_set_item(pamh, PAM_RHOST, con->http.hostname);
+ if (pamerr != PAM_SUCCESS)
+ cupsdLogMessage(CUPSD_LOG_WARN,
+ "cupsdAuthorize: pam_set_item() returned %d "
+ "(%s)!\n", pamerr, pam_strerror(pamh, pamerr));
+# endif /* HAVE_PAM_SET_ITEM && PAM_RHOST */
+
pamerr = pam_authenticate(pamh, PAM_SILENT);
if (pamerr != PAM_SUCCESS)
{
}
#endif /* HAVE_LIBPAM */
}
+
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: Authorized as %s using Basic",
+ username);
break;
case AUTH_BASICDIGEST :
username);
return;
}
+
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: Authorized as %s using BasicDigest",
+ username);
break;
}
+
+ con->type = type;
}
- else if (!strncmp(authorization, "Digest", 6) && type == AUTH_DIGEST)
+ else if (!strncmp(authorization, "Digest", 6))
{
/*
* Get the username, password, and nonce from the Digest attributes...
username);
return;
}
+
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: Authorized as %s using Digest",
+ username);
+
+ con->type = AUTH_DIGEST;
}
#ifdef HAVE_GSSAPI
- else if (!strncmp(authorization, "Negotiate", 9) && type == AUTH_NEGOTIATE)
+ else if (!strncmp(authorization, "Negotiate", 9))
{
int len; /* Length of authorization string */
gss_cred_id_t server_creds; /* Server credentials */
output_token = GSS_C_EMPTY_BUFFER;
/* Output token for username */
gss_name_t client_name; /* Client name */
+ unsigned int ret_flags; /* Credential flags */
# ifdef __APPLE__
*/
if ((server_creds = get_gss_creds(GSSServiceName)) == NULL)
- {
- con->no_negotiate = 1;
return;
- }
/*
* Decode the authorization string to get the input token...
&client_name,
NULL,
&con->gss_output_token,
- NULL,
+ &ret_flags,
NULL,
&con->gss_delegated_cred);
if (context != GSS_C_NO_CONTEXT)
gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER);
- con->no_negotiate = 1;
+ gss_release_cred(&minor_status, &server_creds);
return;
}
/*
- * Get the username associated with the credentials...
+ * Release our credentials...
+ */
+
+ gss_release_cred(&minor_status, &server_creds);
+
+ /*
+ * Get the username associated with the client's credentials...
*/
- if (major_status == GSS_S_COMPLETE)
+ if (!con->gss_delegated_cred)
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: No delegated credentials!");
+
+ if (major_status == GSS_S_CONTINUE_NEEDED)
+ cupsdLogGSSMessage(CUPSD_LOG_DEBUG, major_status, minor_status,
+ "cupsdAuthorize: Credentials not complete");
+ else if (major_status == GSS_S_COMPLETE)
{
major_status = gss_display_name(&minor_status, client_name,
&output_token, NULL);
"cupsdAuthorize: Error getting username");
gss_release_name(&minor_status, &client_name);
gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER);
- con->no_negotiate = 1;
return;
}
gss_release_name(&minor_status, &client_name);
strlcpy(username, output_token.value, sizeof(username));
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "cupsdAuthorize: Authorized as %s using Negotiate",
+ username);
+
gss_release_buffer(&minor_status, &output_token);
gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER);
con->gss_have_creds = 1;
+
+ con->type = AUTH_NEGOTIATE;
}
else
gss_release_name(&minor_status, &client_name);
#endif /* HAVE_GSSAPI */
else
{
- cupsdLogMessage(CUPSD_LOG_ERROR, "Bad authentication data.");
+ char scheme[256]; /* Auth scheme... */
+
+
+ if (sscanf(authorization, "%255s", scheme) != 1)
+ strcpy(scheme, "UNKNOWN");
+
+ cupsdLogMessage(CUPSD_LOG_ERROR, "Bad authentication data \"%s ...\"",
+ scheme);
return;
}
strlcpy(con->username, username, sizeof(con->username));
strlcpy(con->password, password, sizeof(con->password));
+}
+
+
+/*
+ * 'cupsdCheckAccess()' - Check whether the given address is allowed to
+ * access a location.
+ */
+
+int /* O - 1 if allowed, 0 otherwise */
+cupsdCheckAccess(
+ unsigned ip[4], /* I - Client address */
+ char *name, /* I - Client hostname */
+ int namelen, /* I - Length of hostname */
+ cupsd_location_t *loc) /* I - Location to check */
+{
+ int allow; /* 1 if allowed, 0 otherwise */
+
+
+ if (!strcasecmp(name, "localhost"))
+ {
+ /*
+ * Access from localhost (127.0.0.1 or ::1) is always allowed...
+ */
+
+ return (1);
+ }
+ else
+ {
+ /*
+ * Do authorization checks on the domain/address...
+ */
+
+ switch (loc->order_type)
+ {
+ default :
+ allow = 0; /* anti-compiler-warning-code */
+ break;
+
+ case AUTH_ALLOW : /* Order Deny,Allow */
+ allow = 1;
+
+ if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny))
+ allow = 0;
+
+ if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow))
+ allow = 1;
+ break;
+
+ case AUTH_DENY : /* Order Allow,Deny */
+ allow = 0;
- cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAuthorize: username=\"%s\"",
- con->username);
+ if (cupsdCheckAuth(ip, name, namelen, loc->num_allow, loc->allow))
+ allow = 1;
+
+ if (cupsdCheckAuth(ip, name, namelen, loc->num_deny, loc->deny))
+ allow = 0;
+ break;
+ }
+ }
+
+ return (allow);
}
const char *owner)/* I - Owner of object */
{
int i, j, /* Looping vars */
- auth; /* Authorization status */
+ auth, /* Authorization status */
+ type; /* Type of authentication */
unsigned address[4]; /* Authorization address */
cupsd_location_t *best; /* Best match for location so far */
int hostlen; /* Length of hostname */
- const char *username; /* Username to authorize */
+ char username[256], /* Username to authorize */
+ ownername[256], /* Owner name to authorize */
+ *ptr; /* Pointer into username */
struct passwd *pw; /* User password data */
static const char * const levels[] = /* Auth levels */
{
};
static const char * const types[] = /* Auth types */
{
- "NONE",
- "BASIC",
- "DIGEST",
- "BASICDIGEST",
- "KERBEROS"
+ "None",
+ "Basic",
+ "Digest",
+ "BasicDigest",
+ "Negotiate"
};
best = con->best;
+ if ((type = best->type) == AUTH_DEFAULT)
+ type = DefaultAuthType;
+
cupsdLogMessage(CUPSD_LOG_DEBUG2,
- "cupsdIsAuthorized: level=AUTH_%s, type=AUTH_%s, "
+ "cupsdIsAuthorized: level=AUTH_%s, type=%s, "
"satisfy=AUTH_SATISFY_%s, num_names=%d",
- levels[best->level], types[best->type],
+ levels[best->level], types[type],
best->satisfy ? "ANY" : "ALL", best->num_names);
if (best->limit == AUTH_LIMIT_IPP)
hostlen = strlen(con->http.hostname);
- if (!strcasecmp(con->http.hostname, "localhost"))
- {
- /*
- * Access from localhost (127.0.0.1 or ::1) is always allowed...
- */
-
- auth = AUTH_ALLOW;
- }
- else
- {
- /*
- * Do authorization checks on the domain/address...
- */
-
- switch (best->order_type)
- {
- default :
- auth = AUTH_DENY; /* anti-compiler-warning-code */
- break;
-
- case AUTH_ALLOW : /* Order Deny,Allow */
- auth = AUTH_ALLOW;
-
- if (cupsdCheckAuth(address, con->http.hostname, hostlen,
- best->num_deny, best->deny))
- auth = AUTH_DENY;
-
- if (cupsdCheckAuth(address, con->http.hostname, hostlen,
- best->num_allow, best->allow))
- auth = AUTH_ALLOW;
- break;
-
- case AUTH_DENY : /* Order Allow,Deny */
- auth = AUTH_DENY;
-
- if (cupsdCheckAuth(address, con->http.hostname, hostlen,
- best->num_allow, best->allow))
- auth = AUTH_ALLOW;
-
- if (cupsdCheckAuth(address, con->http.hostname, hostlen,
- best->num_deny, best->deny))
- auth = AUTH_DENY;
- break;
- }
- }
+ auth = cupsdCheckAccess(address, con->http.hostname, hostlen, best)
+ ? AUTH_ALLOW : AUTH_DENY;
cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: auth=AUTH_%s...",
auth ? "DENY" : "ALLOW");
if ((best->encryption >= HTTP_ENCRYPT_REQUIRED && !con->http.tls &&
strcasecmp(con->http.hostname, "localhost") &&
best->satisfy == AUTH_SATISFY_ALL) &&
- !(best->type == AUTH_NEGOTIATE ||
- (best->type == AUTH_NONE && DefaultAuthType == AUTH_NEGOTIATE)))
+ !(type == AUTH_NEGOTIATE ||
+ (type == AUTH_NONE && DefaultAuthType == AUTH_NEGOTIATE)))
{
- cupsdLogMessage(CUPSD_LOG_DEBUG2,
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
"cupsdIsAuthorized: Need upgrade to TLS...");
return (HTTP_UPGRADE_REQUIRED);
}
*/
if (best->level == AUTH_ANON || /* Anonymous access - allow it */
- (best->type == AUTH_NONE && best->num_names == 0))
+ (type == AUTH_NONE && best->num_names == 0))
return (HTTP_OK);
- if (!con->username[0] && best->type == AUTH_NONE &&
+ if (!con->username[0] && type == AUTH_NONE &&
best->limit == AUTH_LIMIT_IPP)
{
/*
attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME);
if (attr)
{
- cupsdLogMessage(CUPSD_LOG_DEBUG2,
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
"cupsdIsAuthorized: requesting-user-name=\"%s\"",
attr->values[0].string.text);
- username = attr->values[0].string.text;
+ strlcpy(username, attr->values[0].string.text, sizeof(username));
}
else if (best->satisfy == AUTH_SATISFY_ALL || auth == AUTH_DENY)
return (HTTP_UNAUTHORIZED); /* Non-anonymous needs user/pass */
}
else
{
- cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdIsAuthorized: username=\"%s\"",
+ cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdIsAuthorized: username=\"%s\"",
con->username);
#ifdef HAVE_AUTHORIZATION_H
return (HTTP_OK); /* unless overridden with Satisfy */
}
- username = con->username;
+ if (con->type != type && type != AUTH_NONE &&
+ (con->type != AUTH_BASIC || type != AUTH_BASICDIGEST))
+ {
+ cupsdLogMessage(CUPSD_LOG_ERROR, "Authorized using %s, expected %s!",
+ types[con->type], types[type]);
+
+ return (HTTP_UNAUTHORIZED);
+ }
+
+ strlcpy(username, con->username, sizeof(username));
}
/*
if (!strcmp(username, "root"))
return (HTTP_OK);
+ /*
+ * Strip any @domain or @KDC from the username and owner...
+ */
+
+ if ((ptr = strchr(username, '@')) != NULL)
+ *ptr = '\0';
+
+ if (owner)
+ {
+ strlcpy(ownername, owner, sizeof(ownername));
+
+ if ((ptr = strchr(ownername, '@')) != NULL)
+ *ptr = '\0';
+ }
+ else
+ ownername[0] = '\0';
+
/*
* Get the user info...
*/
for (i = 0; i < best->num_names; i ++)
{
if (!strcasecmp(best->names[i], "@OWNER") && owner &&
- !strcasecmp(username, owner))
+ !strcasecmp(username, ownername))
return (HTTP_OK);
else if (!strcasecmp(best->names[i], "@SYSTEM"))
{
* The user isn't part of the specified group, so deny access...
*/
- cupsdLogMessage(CUPSD_LOG_DEBUG2,
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
"cupsdIsAuthorized: User not in group(s)!");
return (HTTP_UNAUTHORIZED);
return (NULL);
}
- cupsdLogMessage(CUPSD_LOG_INFO, "Attempting to acquire credentials for %s...",
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "get_gss_creds: Attempting to acquire credentials for %s...",
(char *)token.value);
server_creds = GSS_C_NO_CREDENTIAL;
return (NULL);
}
- cupsdLogMessage(CUPSD_LOG_INFO, "Credentials acquired successfully for %s.",
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "get_gss_creds: Credentials acquired successfully for %s.",
(char *)token.value);
gss_release_name(&minor_status, &server_name);
/*
- * End of "$Id: auth.c 6649 2007-07-11 21:46:42Z mike $".
+ * End of "$Id: auth.c 6947 2007-09-12 21:09:49Z mike $".
*/
projects / thirdparty / cups.git / blobdiff