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svn_auth.h

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00001 /**
00002  * @copyright
00003  * ====================================================================
00004  * Copyright (c) 2000-2004 CollabNet.  All rights reserved.
00005  *
00006  * This software is licensed as described in the file COPYING, which
00007  * you should have received as part of this distribution.  The terms
00008  * are also available at http://subversion.tigris.org/license-1.html.
00009  * If newer versions of this license are posted there, you may use a
00010  * newer version instead, at your option.
00011  *
00012  * This software consists of voluntary contributions made by many
00013  * individuals.  For exact contribution history, see the revision
00014  * history and logs, available at http://subversion.tigris.org/.
00015  * ====================================================================
00016  * @endcopyright
00017  *
00018  * @file svn_auth.h
00019  * @brief Interface to Subversion authentication system
00020  */
00021 
00022 #ifndef SVN_AUTH_H
00023 #define SVN_AUTH_H
00024 
00025 #include <apr_pools.h>
00026 
00027 #include "svn_types.h"
00028 
00029 #ifdef __cplusplus
00030 extern "C" {
00031 #endif /* __cplusplus */
00032 
00033 /** Overview of the svn authentication system.
00034  *    
00035  * We define an authentication "provider" as a module that is able to
00036  * return a specific set of credentials. (e.g. username/password,
00037  * certificate, etc.)  Each provider implements a vtable that
00038  *
00039  * - can fetch initial credentials
00040  * - can retry the fetch (or try to fetch something different)
00041  * - can store the credentials for future use
00042  *
00043  * For any given type of credentials, there can exist any number of
00044  * separate providers -- each provider has a different method of
00045  * fetching. (i.e. from a disk store, by prompting the user, etc.)
00046  *
00047  * The application begins by creating an auth baton object, and
00048  * "registers" some number of providers with the auth baton, in a
00049  * specific order.  (For example, it may first register a
00050  * username/password provider that looks in disk store, then register
00051  * a username/password provider that prompts the user.)
00052  *
00053  * Later on, when any svn library is challenged, it asks the auth
00054  * baton for the specific credentials.  If the initial credentials
00055  * fail to authenticate, the caller keeps requesting new credentials.
00056  * Under the hood, libsvn_auth effectively "walks" over each provider
00057  * (in order of registry), one at a time, until all the providers have
00058  * exhausted all their retry options.
00059  *
00060  * This system allows an application to flexibly define authentication
00061  * behaviors (by changing registration order), and very easily write
00062  * new authentication providers.
00063  *
00064  * An auth_baton also contains an internal hashtable of run-time
00065  * parameters; any provider or library layer can set these run-time
00066  * parameters at any time, so that the provider has access to the
00067  * data.  (For example, certain run-time data may not be available
00068  * until an authentication challenge is made.)  Each credential type
00069  * must document the run-time parameters that are made available to
00070  * its providers.
00071  *
00072  * @defgroup auth_fns authentication functions
00073  * @{
00074  */
00075 
00076 
00077 /** The type of a Subversion authentication object */
00078 typedef struct svn_auth_baton_t svn_auth_baton_t;
00079 
00080 /** The type of a Subversion authentication-iteration object */
00081 typedef struct svn_auth_iterstate_t svn_auth_iterstate_t;
00082 
00083 
00084 /** The main authentication "provider" vtable. */
00085 typedef struct svn_auth_provider_t
00086 {
00087   /** The kind of credentials this provider knows how to retrieve. */
00088   const char *cred_kind;
00089   
00090   /** Get an initial set of credentials.
00091    *
00092    * Set @a *credentials to a set of valid credentials within @a
00093    * realmstring, or NULL if no credentials are available.  Set @a
00094    * *iter_baton to context that allows a subsequent call to @c
00095    * next_credentials, in case the first credentials fail to
00096    * authenticate.  @a provider_baton is general context for the
00097    * vtable, @a parameters contains any run-time data that the
00098    * provider may need, and @a realmstring comes from the @c
00099    * svn_auth_first_credentials call.
00100    */
00101   svn_error_t * (*first_credentials) (void **credentials,
00102                                       void **iter_baton,
00103                                       void *provider_baton,
00104                                       apr_hash_t *parameters,
00105                                       const char *realmstring,
00106                                       apr_pool_t *pool);
00107 
00108   /** Get a different set of credentials.
00109    *
00110    * Set @a *credentials to another set of valid credentials, (using
00111    * @a iter_baton as the context from previous call to first_credentials
00112    * or next_credentials).  If no more credentials are available, set
00113    * @a **credentials to NULL.  If the provider only has one set of
00114    * credentials, this function pointer should simply be NULL. @a
00115    * provider_baton is general context for the vtable, @a parameters
00116    * contains any run-time data that the provider may need, and @a
00117    * realmstring comes from the @c svn_auth_first_credentials call.
00118    */
00119   svn_error_t * (*next_credentials) (void **credentials,
00120                                      void *iter_baton,
00121                                      void *provider_baton,
00122                                      apr_hash_t *parameters,
00123                                      const char *realmstring,
00124                                      apr_pool_t *pool);
00125   
00126   /** Save credentials.
00127    *
00128    * Store @a credentials for future use.  @a provider_baton is
00129    * general context for the vtable, and @a parameters contains any
00130    * run-time data the provider may need.  Set @a *saved to true if
00131    * the save happened, or false if not.  The provider is not required
00132    * to save; if it refuses or is unable to save for non-fatal
00133    * reasons, return false.  If the provider never saves data, then
00134    * this function pointer should simply be NULL. @a realmstring comes
00135    * from the @c svn_auth_first_credentials call.
00136    */
00137   svn_error_t * (*save_credentials) (svn_boolean_t *saved,
00138                                      void *credentials,
00139                                      void *provider_baton,
00140                                      apr_hash_t *parameters,
00141                                      const char *realmstring,
00142                                      apr_pool_t *pool);
00143   
00144 } svn_auth_provider_t;
00145 
00146 
00147 /** A provider object, ready to be put into an array and given to
00148     @c svn_auth_open. */
00149 typedef struct svn_auth_provider_object_t
00150 {
00151   const svn_auth_provider_t *vtable;
00152   void *provider_baton;
00153 
00154 } svn_auth_provider_object_t;
00155 
00156 
00157 
00158 /** Specific types of credentials **/
00159 
00160 /** Simple username/password pair credential kind.
00161  *
00162  * The following auth parameters may be available to the providers:
00163  *
00164  * - @c SVN_AUTH_PARAM_NO_AUTH_CACHE (@c void*)
00165  * - @c SVN_AUTH_PARAM_DEFAULT_USERNAME (@c char*)
00166  * - @c SVN_AUTH_PARAM_DEFAULT_PASSWORD (@c char*)
00167  */
00168 #define SVN_AUTH_CRED_SIMPLE "svn.simple"
00169 
00170 /** @c SVN_AUTH_CRED_SIMPLE credentials. */
00171 typedef struct svn_auth_cred_simple_t
00172 {
00173   /** Username */
00174   const char *username;
00175   /** Password */
00176   const char *password;
00177   /** Indicates if the credentials may be saved (to disk). For example, a
00178    * GUI prompt implementation with a remember password checkbox shall set
00179    * @a may_save to TRUE if the checkbox is checked.
00180    */
00181   svn_boolean_t may_save;
00182 } svn_auth_cred_simple_t;
00183 
00184 
00185 /** Username credential kind.
00186  *
00187  * The following optional auth parameters are relevant to the providers:
00188  *
00189  * - @c SVN_AUTH_PARAM_NO_AUTH_CACHE (@c void*)
00190  * - @c SVN_AUTH_PARAM_DEFAULT_USERNAME (@c char*)
00191  */
00192 #define SVN_AUTH_CRED_USERNAME "svn.username"
00193 
00194 /** @c SVN_AUTH_CRED_USERNAME credentials. */
00195 typedef struct svn_auth_cred_username_t
00196 {
00197   /** Username */
00198   const char *username;
00199   /** Indicates if the credentials may be saved (to disk). For example, a
00200    * GUI prompt implementation with a remember username checkbox shall set
00201    * @a may_save to TRUE if the checkbox is checked.
00202    */
00203   svn_boolean_t may_save;
00204 } svn_auth_cred_username_t;
00205 
00206 
00207 /** SSL client certificate credential type.
00208  *
00209  * The following auth parameters are available to the providers:
00210  *
00211  * - @c SVN_AUTH_PARAM_CONFIG (@c svn_config_t*)
00212  * - @c SVN_AUTH_PARAM_SERVER_GROUP (@c char*)
00213  *
00214  * The following optional auth parameters are relevant to the providers:
00215  *
00216  * - @c SVN_AUTH_PARAM_NO_AUTH_CACHE (@c void*)
00217  */
00218 #define SVN_AUTH_CRED_SSL_CLIENT_CERT "svn.ssl.client-cert"
00219 
00220 /** @c SVN_AUTH_CRED_SSL_CLIENT_CERT credentials. */
00221 typedef struct svn_auth_cred_ssl_client_cert_t
00222 {
00223   /** Full paths to the certificate file */
00224   const char *cert_file;
00225   /** Indicates if the credentials may be saved (to disk). For example, a
00226    * GUI prompt implementation with a remember certificate checkbox shall
00227    * set @a may_save to TRUE if the checkbox is checked.
00228    */
00229   svn_boolean_t may_save;
00230 } svn_auth_cred_ssl_client_cert_t;
00231 
00232 
00233 /** SSL client certificate passphrase credential type.
00234  *
00235  * @note The realmstring used with this credential type must be a name that
00236  * makes it possible for the user to identify the certificate.
00237  *
00238  * The following auth parameters are available to the providers:
00239  *
00240  * - @c SVN_AUTH_PARAM_CONFIG (@c svn_config_t*)
00241  * - @c SVN_AUTH_PARAM_SERVER_GROUP (@c char*)
00242  *
00243  * The following optional auth parameters are relevant to the providers:
00244  *
00245  * - @c SVN_AUTH_PARAM_NO_AUTH_CACHE (@c void*)
00246  */
00247 #define SVN_AUTH_CRED_SSL_CLIENT_CERT_PW "svn.ssl.client-passphrase"
00248 
00249 /** @c SVN_AUTH_CRED_SSL_CLIENT_CERT_PW crentials. */
00250 typedef struct svn_auth_cred_ssl_client_cert_pw_t
00251 {
00252   /** Certificate password */
00253   const char *password;
00254   /** Indicates if the credentials may be saved (to disk). For example, a
00255    * GUI prompt implementation with a remember password checkbox shall set
00256    * @a may_save to TRUE if the checkbox is checked.
00257    */
00258   svn_boolean_t may_save;
00259 } svn_auth_cred_ssl_client_cert_pw_t;
00260 
00261 
00262 /** SSL server verification credential type.
00263  *
00264  * The following auth parameters are available to the providers:
00265  *
00266  * - @c SVN_AUTH_PARAM_CONFIG (@c svn_config_t*)
00267  * - @c SVN_AUTH_PARAM_SERVER_GROUP (@c char*)
00268  * - @c SVN_AUTH_PARAM_SSL_SERVER_FAILURES (@c apr_uint32_t*)
00269  * - @c SVN_AUTH_PARAM_SSL_SERVER_CERT_INFO
00270  *      (@c svn_auth_ssl_server_cert_info_t*)
00271  *
00272  * The following optional auth parameters are relevant to the providers:
00273  *
00274  * - @c SVN_AUTH_PARAM_NO_AUTH_CACHE (@c void*)
00275  */
00276 #define SVN_AUTH_CRED_SSL_SERVER_TRUST "svn.ssl.server"
00277 
00278 /** SSL server certificate information used by @c
00279  * SVN_AUTH_CRED_SSL_SERVER_TRUST providers.
00280  */
00281 typedef struct svn_auth_ssl_server_cert_info_t 
00282 {
00283   /** Primary CN */
00284   const char *hostname;
00285   /** ASCII fingerprint */
00286   const char *fingerprint;
00287   /** ASCII date from which the certificate is valid */
00288   const char *valid_from;
00289   /** ASCII date until which the certificate is valid */
00290   const char *valid_until;
00291   /** DN of the certificate issuer */
00292   const char *issuer_dname;
00293   /** Base-64 encoded DER certificate representation */
00294   const char *ascii_cert;
00295 } svn_auth_ssl_server_cert_info_t;
00296 
00297 /** @c SVN_AUTH_CRED_SSL_SERVER_TRUST credentials. */
00298 typedef struct svn_auth_cred_ssl_server_trust_t
00299 {
00300   /** Indicates if the credentials may be saved (to disk). For example, a
00301    * GUI prompt implementation with a checkbox to accept the certificate
00302    * permanently shall set @a may_save to TRUE if the checkbox is checked.
00303    */
00304   svn_boolean_t may_save;
00305   /** Bit mask of the accepted failures */
00306   apr_uint32_t accepted_failures;
00307 } svn_auth_cred_ssl_server_trust_t;
00308 
00309 
00310 
00311 /** Credential-constructing prompt functions. **/
00312 
00313 /** These exist so that different client applications can use
00314  * different prompt mechanisms to supply the same credentials.  For
00315  * example, if authentication requires a username and password, a
00316  * command-line client's prompting function might prompt first for the
00317  * username and then for the password, whereas a GUI client's would
00318  * present a single dialog box asking for both, and a telepathic
00319  * client's would read all the information directly from the user's
00320  * mind.  All these prompting functions return the same type of
00321  * credential, but the information used to construct the credential is
00322  * gathered in an interface-specific way in each case.
00323  */
00324 
00325 /** Set @a *cred by prompting the user, allocating @a *cred in @a pool.
00326  * @a baton is an implementation-specific closure.
00327  *
00328  * If @a realm is non-null, maybe use it in the prompt string.
00329  *
00330  * If @a username is non-null, then the user might be prompted only
00331  * for a password, but @a *creds would still be filled with both
00332  * username and password.  For example, a typical usage would be to
00333  * pass @a username on the first call, but then leave it null for
00334  * subsequent calls, on the theory that if credentials failed, it's
00335  * as likely to be due to incorrect username as incorrect password.
00336  *
00337  * If @a may_save is FALSE, the auth system does not allow the credentials
00338  * to be saved (to disk). A prompt function shall not ask the user if the
00339  * credentials shall be saved if @a may_save is FALSE. For example, a GUI
00340  * client with a remember password checkbox would grey out the checkbox if
00341  * @a may_save is FALSE.
00342  */
00343 typedef svn_error_t *
00344 (*svn_auth_simple_prompt_func_t) (svn_auth_cred_simple_t **cred,
00345                                   void *baton,
00346                                   const char *realm,
00347                                   const char *username,
00348                                   svn_boolean_t may_save,
00349                                   apr_pool_t *pool);
00350 
00351 
00352 /** Set @a *cred by prompting the user, allocating @a *cred in @a pool.
00353  * @a baton is an implementation-specific closure.
00354  *
00355  * If @a realm is non-null, maybe use it in the prompt string.
00356  *
00357  * If @a may_save is FALSE, the auth system does not allow the credentials
00358  * to be saved (to disk). A prompt function shall not ask the user if the
00359  * credentials shall be saved if @a may_save is FALSE. For example, a GUI
00360  * client with a remember username checkbox would grey out the checkbox if
00361  * @a may_save is FALSE.
00362  */
00363 typedef svn_error_t *
00364 (*svn_auth_username_prompt_func_t) (svn_auth_cred_username_t **cred,
00365                                     void *baton,
00366                                     const char *realm,
00367                                     svn_boolean_t may_save,
00368                                     apr_pool_t *pool);
00369 
00370 
00371 /** @name SSL server certificate failure bits
00372  *
00373  * @note These values are stored in the on disk auth cache by the SSL
00374  * server certificate auth provider, so the meaning of these bits must
00375  * not be changed.
00376  * @{
00377  */
00378 /** Certificate is not yet valid. */
00379 #define SVN_AUTH_SSL_NOTYETVALID 0x00000001
00380 /** Certificate has expired. */
00381 #define SVN_AUTH_SSL_EXPIRED     0x00000002
00382 /** Certificate's CN (hostname) does not match the remote hostname. */
00383 #define SVN_AUTH_SSL_CNMISMATCH  0x00000004
00384 /** @brief Certificate authority is unknown (i.e. not trusted) */
00385 #define SVN_AUTH_SSL_UNKNOWNCA   0x00000008
00386 /** @brief Other failure. This can happen if neon has introduced a new
00387  * failure bit that we do not handle yet. */
00388 #define SVN_AUTH_SSL_OTHER       0x40000000
00389 /** @} */
00390 
00391 /** Set @a *cred by prompting the user, allocating @a *cred in @a pool.
00392  * @a baton is an implementation-specific closure.
00393  *
00394  * @a cert_info is a structure describing the server cert that was
00395  * presented to the client, and @a failures is a bitmask that
00396  * describes exactly why the cert could not be automatically validated.
00397  * (See the #define error flag values below.)  @a realm is a string
00398  * that can be used in the prompt string.
00399  *
00400  * If @a may_save is FALSE, the auth system does not allow the credentials
00401  * to be saved (to disk). A prompt function shall not ask the user if the
00402  * credentials shall be saved if @a may_save is FALSE. For example, a GUI
00403  * client with a trust permanently checkbox would grey out the checkbox if
00404  * @a may_save is FALSE.
00405  */
00406 typedef svn_error_t *(*svn_auth_ssl_server_trust_prompt_func_t) (
00407   svn_auth_cred_ssl_server_trust_t **cred,
00408   void *baton,
00409   const char *realm,
00410   apr_uint32_t failures,
00411   const svn_auth_ssl_server_cert_info_t *cert_info,
00412   svn_boolean_t may_save,
00413   apr_pool_t *pool);
00414 
00415 
00416 /** Set @a *cred by prompting the user, allocating @a *cred in @a pool.
00417  * @a baton is an implementation-specific closure.  @a realm is a string
00418  * that can be used in the prompt string.
00419  *
00420  * If @a may_save is FALSE, the auth system does not allow the credentials
00421  * to be saved (to disk). A prompt function shall not ask the user if the
00422  * credentials shall be saved if @a may_save is FALSE. For example, a GUI
00423  * client with a remember certificate checkbox would grey out the checkbox
00424  * if @a may_save is FALSE.
00425  */
00426 typedef svn_error_t *(*svn_auth_ssl_client_cert_prompt_func_t) (
00427   svn_auth_cred_ssl_client_cert_t **cred,
00428   void *baton,
00429   const char *realm,
00430   svn_boolean_t may_save,
00431   apr_pool_t *pool);
00432 
00433 
00434 /** Set @a *cred by prompting the user, allocating @a *cred in @a pool.
00435  * @a baton is an implementation-specific closure.  @a realm is a string
00436  * identifying the certificate, and can be used in the prompt string.
00437  *
00438  * If @a may_save is FALSE, the auth system does not allow the credentials
00439  * to be saved (to disk). A prompt function shall not ask the user if the
00440  * credentials shall be saved if @a may_save is FALSE. For example, a GUI
00441  * client with a remember password checkbox would grey out the checkbox if
00442  * @a may_save is FALSE.
00443  */
00444 typedef svn_error_t *(*svn_auth_ssl_client_cert_pw_prompt_func_t) (
00445   svn_auth_cred_ssl_client_cert_pw_t **cred,
00446   void *baton,
00447   const char *realm,
00448   svn_boolean_t may_save,
00449   apr_pool_t *pool);
00450 
00451 
00452 
00453 /** Initialize an authentication system.
00454  *
00455  * Return an authentication object in @a *auth_baton (allocated in @a
00456  * pool) that represents a particular instance of the svn
00457  * authentication system.  @a providers is an array of @c
00458  * svn_auth_provider_object_t pointers, already allocated in @a pool
00459  * and intentionally ordered.  These pointers will be stored within @a
00460  * *auth_baton, grouped by credential type, and searched in this exact
00461  * order.
00462  */
00463 void svn_auth_open(svn_auth_baton_t **auth_baton,
00464                    apr_array_header_t *providers,
00465                    apr_pool_t *pool);
00466 
00467 /** Set an authentication run-time parameter.
00468  *
00469  * Store @a name / @a value pair as a run-time parameter in @a
00470  * auth_baton, making the data accessible to all providers.  @a name
00471  * and @a value will be NOT be duplicated into the auth_baton's
00472  * pool. To delete a run-time parameter, pass NULL for @a value.
00473  */
00474 void svn_auth_set_parameter(svn_auth_baton_t *auth_baton,
00475                             const char *name,
00476                             const void *value);
00477 
00478 /** Get an authentication run-time parameter.
00479  *
00480  * Return a value for run-time parameter @a name from @a auth_baton.
00481  * Return NULL if the parameter doesn't exist.
00482  */
00483 const void * svn_auth_get_parameter(svn_auth_baton_t *auth_baton,
00484                                     const char *name);
00485 
00486 /** Universal run-time parameters, made available to all providers.
00487 
00488     If you are writing a new provider, then to be a "good citizen",
00489     you should notice these global parameters!  Note that these
00490     run-time params should be treated as read-only by providers; the
00491     application is responsible for placing them into the auth_baton
00492     hash. */
00493 
00494 /** The auth-hash prefix indicating that the parameter is global. */
00495 #define SVN_AUTH_PARAM_PREFIX "svn:auth:"
00496 
00497 /** @brief Any 'default' credentials that came in through the application
00498  * itself, (e.g. --username and --password options).  Property values are
00499  * const char *.  */
00500 #define SVN_AUTH_PARAM_DEFAULT_USERNAME  SVN_AUTH_PARAM_PREFIX "username"
00501 #define SVN_AUTH_PARAM_DEFAULT_PASSWORD  SVN_AUTH_PARAM_PREFIX "password"
00502 
00503 /** @brief The application doesn't want any providers to prompt
00504  * users. Property value is irrelevant; only property's existence
00505  * matters. */
00506 #define SVN_AUTH_PARAM_NON_INTERACTIVE  SVN_AUTH_PARAM_PREFIX "non-interactive"
00507 
00508 /** @brief The application doesn't want any providers to save credentials
00509  * to disk. Property value is irrelevant; only property's existence
00510  * matters. */
00511 #define SVN_AUTH_PARAM_NO_AUTH_CACHE  SVN_AUTH_PARAM_PREFIX "no-auth-cache"
00512 
00513 /** @brief The following property is for SSL server cert providers. This
00514  * provides a pointer to an @c apr_uint32_t containing the failures
00515  * detected by the certificate validator. */
00516 #define SVN_AUTH_PARAM_SSL_SERVER_FAILURES SVN_AUTH_PARAM_PREFIX \
00517   "ssl:failures"
00518 
00519 /** @brief The following property is for SSL server cert providers. This
00520  * provides the cert info (svn_auth_ssl_server_cert_info_t). */
00521 #define SVN_AUTH_PARAM_SSL_SERVER_CERT_INFO SVN_AUTH_PARAM_PREFIX \
00522   "ssl:cert-info"
00523 
00524 /** Some providers need access to the @c svn_config_t configuration. */
00525 #define SVN_AUTH_PARAM_CONFIG SVN_AUTH_PARAM_PREFIX "config"
00526 
00527 /** The current server group. */
00528 #define SVN_AUTH_PARAM_SERVER_GROUP SVN_AUTH_PARAM_PREFIX "server-group"
00529 
00530 /** @brief A configuration directory that overrides the default
00531  * ~/.subversion. */
00532 #define SVN_AUTH_PARAM_CONFIG_DIR SVN_AUTH_PARAM_PREFIX "config-dir"
00533 
00534 
00535 /** Get an initial set of credentials.
00536  *
00537  * Ask @a auth_baton to set @a *credentials to a set of credentials
00538  * defined by @a cred_kind and valid within @a realmstring, or NULL if
00539  * no credentials are available.  Otherwise, return an iteration state
00540  * in @a *state, so that the caller can call @c
00541  * svn_auth_next_credentials, in case the first set of credentials
00542  * fails to authenticate.
00543  *
00544  * Use @a pool to allocate @a *state, and for temporary allocation.
00545  * Note that @a *credentials will be allocated in @a auth_baton's pool.
00546  */
00547 svn_error_t * svn_auth_first_credentials(void **credentials,
00548                                          svn_auth_iterstate_t **state,
00549                                          const char *cred_kind,
00550                                          const char *realmstring,
00551                                          svn_auth_baton_t *auth_baton,
00552                                          apr_pool_t *pool);
00553 
00554 /** Get another set of credentials, assuming previous ones failed to
00555  * authenticate.
00556  *
00557  * Use @a state to fetch a different set of @a *credentials, as a
00558  * follow-up to @c svn_auth_first_credentials or @c
00559  * svn_auth_next_credentials.  If no more credentials are available,
00560  * set @a *credentials to NULL.
00561  *
00562  * Note that @a *credentials will be allocated in @c auth_baton's pool.
00563  */
00564 svn_error_t * svn_auth_next_credentials(void **credentials,
00565                                         svn_auth_iterstate_t *state,
00566                                         apr_pool_t *pool);
00567 
00568 /** Save a set of credentials.
00569  *
00570  * Ask @a state to store the most recently returned credentials,
00571  * presumably because they successfully authenticated.  Use @a pool
00572  * for temporary allocation.  If no credentials were ever returned, do
00573  * nothing.
00574  */
00575 svn_error_t * svn_auth_save_credentials(svn_auth_iterstate_t *state,
00576                                         apr_pool_t *pool);
00577 
00578 /** @} */
00579 
00580 #ifdef __cplusplus
00581 }
00582 #endif /* __cplusplus */
00583 
00584 #endif /* SVN_AUTH_H */

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