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finish first implementation of /version API call for the auditor

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Christian Grothoff 2018-10-24 11:56:51 +02:00
parent d83c840d25
commit 69a8c16e58
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GPG Key ID: 939E6BE1E29FC3CC
4 changed files with 94 additions and 109 deletions
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3
src/auditor-lib/auditor_api_deposit_confirmation.c
View File

@ -15,9 +15,8 @@
<http://www.gnu.org/licenses/>
*/
/**
* @file auditor-lib/auditor_api_deposit.c
* @file auditor-lib/auditor_api_deposit_confirmation.c
* @brief Implementation of the /deposit request of the auditor's HTTP API
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
* @author Christian Grothoff
*/
#include "platform.h"

163
src/auditor-lib/auditor_api_handle.c
View File

@ -111,7 +111,7 @@ struct TALER_AUDITOR_Handle
* Data for the request to get the /version of a auditor,
* NULL once we are past stage #MHS_INIT.
*/
struct VersionRequest *kr;
struct VersionRequest *vr;
/**
* Task for retrying /version request.
@ -119,10 +119,10 @@ struct TALER_AUDITOR_Handle
struct GNUNET_SCHEDULER_Task *retry_task;
/**
* Key data of the auditor, only valid if
* /version data of the auditor, only valid if
* @e handshake_complete is past stage #MHS_VERSION.
*/
struct TALER_AUDITOR_Version key_data;
struct TALER_AUDITOR_VersionInformation vi;
/**
* Retry /version frequency.
@ -167,54 +167,26 @@ struct VersionRequest
* Note that this does not cancel the request
* itself.
*
* @param kr request to free
* @param vr request to free
*/
static void
free_version_request (struct VersionRequest *kr)
free_version_request (struct VersionRequest *vr)
{
GNUNET_free (kr->url);
GNUNET_free (kr);
GNUNET_free (vr->url);
GNUNET_free (vr);
}
/**
* Parse a auditor's auditor information encoded in JSON.
* Free version data object.
*
* @param[out] auditor where to return the result
* @param check_sig should we check signatures
* @param[in] auditor_obj json to parse
* @param key_data information about denomination version
* @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is
* invalid or the json malformed.
* @param vi data to free (pointer itself excluded)
*/
static int
parse_json_auditor (struct TALER_AUDITOR_AuditorInformation *auditor,
int check_sigs,
json_t *auditor_obj,
const struct TALER_AUDITOR_Version *key_data)
static void
free_version_info (struct TALER_AUDITOR_VersionInformation *vi)
{
const char *auditor_url;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_fixed_auto ("auditor_pub",
&auditor->auditor_pub),
GNUNET_JSON_spec_string ("auditor_url",
&auditor_url),
GNUNET_JSON_spec_json ("denomination_version",
&version),
GNUNET_JSON_spec_end()
};
if (GNUNET_OK !=
GNUNET_JSON_parse (auditor_obj,
spec,
NULL, NULL))
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
auditor->auditor_url = GNUNET_strdup (auditor_url);
GNUNET_JSON_parse_free (spec);
return GNUNET_OK;
GNUNET_free_non_null (vi->version);
vi->version = NULL;
}
@ -224,15 +196,15 @@ parse_json_auditor (struct TALER_AUDITOR_AuditorInformation *auditor,
*
* @param[in] resp_obj JSON object to parse
* @param check_sig #GNUNET_YES if we should check the signature
* @param[out] key_data where to store the results we decoded
* @param[out] where to store version compatibility data
* @param[out] vi where to store the results we decoded
* @param[out] vc where to store version compatibility data
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error (malformed JSON)
*/
static int
decode_version_json (const json_t *resp_obj,
int check_sig,
struct TALER_AUDITOR_Version *key_data,
enum TALER_AUDITOR_VersionCompatibility *vc)
int check_sig,
struct TALER_AUDITOR_VersionInformation *vi,
enum TALER_AUDITOR_VersionCompatibility *vc)
{
struct TALER_AuditorPublicKeyP pub;
unsigned int age;
@ -240,9 +212,9 @@ decode_version_json (const json_t *resp_obj,
unsigned int current;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_string ("version",
&ver),
&vi->version),
GNUNET_JSON_spec_fixed_auto ("master_public_key",
&key_data->master_pub),
&vi->auditor_pub),
GNUNET_JSON_spec_end()
};
@ -260,13 +232,14 @@ decode_version_json (const json_t *resp_obj,
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
if (3 != sscanf (ver,
if (3 != sscanf (vi->version,
"%u:%u:%u",
&current,
&revision,
&age))
{
GNUNET_break_op (0);
free_version_info (vi);
return GNUNET_SYSERR;
}
*vc = TALER_AUDITOR_VC_MATCH;
@ -282,24 +255,10 @@ decode_version_json (const json_t *resp_obj,
if (TALER_PROTOCOL_CURRENT - TALER_PROTOCOL_AGE > current)
*vc |= TALER_AUDITOR_VC_INCOMPATIBLE;
}
key_data->version = GNUNET_strdup (ver);
return GNUNET_OK;
}
/**
* Free key data object.
*
* @param key_data data to free (pointer itself excluded)
*/
static void
free_key_data (struct TALER_AUDITOR_Keys *key_data)
{
GNUNET_free_non_null (key_data->version);
key_data->version = NULL;
}
/**
* Initiate download of /version from the auditor.
*
@ -322,25 +281,26 @@ version_completed_cb (void *cls,
long response_code,
const json_t *resp_obj)
{
struct VersionRequest *kr = cls;
struct TALER_AUDITOR_Handle *auditor = kr->auditor;
struct VersionRequest *vr = cls;
struct TALER_AUDITOR_Handle *auditor = vr->auditor;
enum TALER_AUDITOR_VersionCompatibility vc;
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Received version from URL `%s' with status %ld.\n",
kr->url,
vr->url,
response_code);
vc = TALER_AUDITOR_VC_PROTOCOL_ERROR;
switch (response_code)
{
case 0:
free_version_request (kr);
auditor->kr = NULL;
case MHD_HTTP_INTERNAL_SERVER_ERROR:
free_version_request (vr);
auditor->vr = NULL;
GNUNET_assert (NULL == auditor->retry_task);
auditor->retry_delay = AUDITOR_LIB_BACKOFF (auditor->retry_delay);
auditor->retry_task = GNUNET_SCHEDULER_add_delayed (auditor->retry_delay,
&request_version,
auditor);
&request_version,
auditor);
return;
case MHD_HTTP_OK:
if (NULL == resp_obj)
@ -348,13 +308,11 @@ version_completed_cb (void *cls,
response_code = 0;
break;
}
/* We keep the denomination version and auditor signatures from the
previous iteration (/version cherry picking) */
if (GNUNET_OK !=
decode_version_json (resp_obj,
GNUNET_YES,
&kd,
&vc))
GNUNET_YES,
&auditor->vi,
&vc))
{
response_code = 0;
break;
@ -367,14 +325,12 @@ version_completed_cb (void *cls,
(unsigned int) response_code);
break;
}
auditor->key_data = kd;
if (MHD_HTTP_OK != response_code)
{
auditor->kr = NULL;
free_version_request (kr);
auditor->vr = NULL;
free_version_request (vr);
auditor->state = MHS_FAILED;
free_key_data (&kd_old);
free_version_info (&auditor->vi);
/* notify application that we failed */
auditor->version_cb (auditor->version_cb_cls,
NULL,
@ -382,14 +338,13 @@ version_completed_cb (void *cls,
return;
}
auditor->kr = NULL;
free_version_request (kr);
auditor->vr = NULL;
free_version_request (vr);
auditor->state = MHS_VERSION;
/* notify application about the key information */
auditor->version_cb (auditor->version_cb_cls,
&auditor->key_data,
vc);
free_key_data (&kd_old);
&auditor->vi,
vc);
}
@ -426,7 +381,7 @@ MAH_handle_is_ready (struct TALER_AUDITOR_Handle *h)
* Obtain the URL to use for an API request.
*
* @param h handle for the auditor
* @param path Taler API path (i.e. "/reserve/withdraw")
* @param path Taler API path (i.e. "/deposit-confirmation")
* @return the full URL to use with cURL
*/
char *
@ -442,7 +397,7 @@ MAH_path_to_url (struct TALER_AUDITOR_Handle *h,
* Obtain the URL to use for an API request.
*
* @param base_url base URL of the auditor (i.e. "http://auditor/")
* @param path Taler API path (i.e. "/reserve/withdraw")
* @param path Taler API path (i.e. "/deposit-confirmation")
* @return the full URL to use with cURL
*/
char *
@ -476,7 +431,7 @@ MAH_path_to_url2 (const char *base_url,
*
* @param ctx the context
* @param url HTTP base URL for the auditor
* @param version_cb function to call with the auditor's versionification information
* @param version_cb function to call with the auditor's version information
* @param version_cb_cls closure for @a version_cb
* @return the auditor handle; NULL upon error
*/
@ -508,19 +463,19 @@ static void
request_version (void *cls)
{
struct TALER_AUDITOR_Handle *auditor = cls;
struct VersionRequest *kr;
struct VersionRequest *vr;
CURL *eh;
auditor->retry_task = NULL;
GNUNET_assert (NULL == auditor->kr);
kr = GNUNET_new (struct VersionRequest);
kr->auditor = auditor;
kr->url = MAH_path_to_url (auditor,
GNUNET_assert (NULL == auditor->vr);
vr = GNUNET_new (struct VersionRequest);
vr->auditor = auditor;
vr->url = MAH_path_to_url (auditor,
"/version");
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Requesting version with URL `%s'.\n",
kr->url);
eh = TEL_curl_easy_get (kr->url);
vr->url);
eh = TEL_curl_easy_get (vr->url);
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_VERBOSE,
@ -532,13 +487,13 @@ request_version (void *cls)
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_HEADERDATA,
kr));
kr->job = GNUNET_CURL_job_add (auditor->ctx,
vr));
vr->job = GNUNET_CURL_job_add (auditor->ctx,
eh,
GNUNET_NO,
(GC_JCC) &version_completed_cb,
kr);
auditor->kr = kr;
vr);
auditor->vr = vr;
}
@ -550,13 +505,13 @@ request_version (void *cls)
void
TALER_AUDITOR_disconnect (struct TALER_AUDITOR_Handle *auditor)
{
if (NULL != auditor->kr)
if (NULL != auditor->vr)
{
GNUNET_CURL_job_cancel (auditor->kr->job);
free_version_request (auditor->kr);
auditor->kr = NULL;
GNUNET_CURL_job_cancel (auditor->vr->job);
free_version_request (auditor->vr);
auditor->vr = NULL;
}
free_key_data (&auditor->key_data);
free_version_info (&auditor->vi);
if (NULL != auditor->retry_task)
{
GNUNET_SCHEDULER_cancel (auditor->retry_task);

4
src/auditor-lib/auditor_api_handle.h
View File

@ -48,7 +48,7 @@ MAH_handle_is_ready (struct TALER_AUDITOR_Handle *h);
* Obtain the URL to use for an API request.
*
* @param h the auditor handle to query
* @param path Taler API path (i.e. "/reserve/withdraw")
* @param path Taler API path (i.e. "/deposit-confirmation")
* @return the full URL to use with cURL
*/
char *
@ -60,7 +60,7 @@ MAH_path_to_url (struct TALER_AUDITOR_Handle *h,
* Obtain the URL to use for an API request.
*
* @param base_url base URL of the auditor (i.e. "http://auditor/")
* @param path Taler API path (i.e. "/reserve/withdraw")
* @param path Taler API path (i.e. "/deposit-confirmation")
* @return the full URL to use with cURL
*/
char *

33
src/include/taler_auditor_service.h
View File

@ -136,7 +136,7 @@ struct TALER_AUDITOR_Handle;
*
* @param ctx the context
* @param url HTTP base URL for the auditor
* @param version_cb function to call with the auditor's versionification information
* @param version_cb function to call with the auditor's version information
* @param version_cb_cls closure for @a version_cb
* @return the auditor handle; NULL upon error
*/
@ -156,4 +156,35 @@ void
TALER_AUDITOR_disconnect (struct TALER_AUDITOR_Handle *auditor);
/**
* @brief A DepositConfirmation Handle
*/
struct TALER_AUDITOR_DepositConfirmationHandle;
/**
* Signature of functions called with the result from our call to the
* auditor's /deposit-confirmation handler.
*
* @param cls closure
* @param http_status HTTP status code, 200 on success
* @param ec taler protocol error status code, 0 on success
* @param json raw json response
*/
typedef void
(*TALER_AUDITOR_DepositConfirmationResultCallback)(void *cls,
unsigned int http_status,
enum TALER_ErrorCode ec,
const json_t *json);
/**
* Cancel a deposit-confirmation permission request. This function cannot be used
* on a request handle if a response is already served for it.
*
* @param deposit-confirmation the deposit-confirmation permission request handle
*/
void
TALER_AUDITOR_deposit_confirmation_cancel (struct TALER_AUDITOR_DepositConfirmationHandle *deposit_confirmation);
#endif /* _TALER_AUDITOR_SERVICE_H */