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adding first version of thebank-lib

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This commit is contained in:
Christian Grothoff 2016-01-25 10:20:40 +01:00
parent 5c58c43609
commit 941cb8182f
8 changed files with 4685 additions and 0 deletions
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47
src/bank-lib/Makefile.am Normal file
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# This Makefile.am is in the public domain
AM_CPPFLAGS = -I$(top_srcdir)/src/include
if USE_COVERAGE
AM_CFLAGS = --coverage -O0
XLIB = -lgcov
endif
lib_LTLIBRARIES = \
libtalerbank.la
libtalerbank_la_LDFLAGS = \
-version-info 0:0:0 \
-no-undefined
libtalerbank_la_SOURCES = \
bank_api_context.c bank_api_context.h \
bank_api_json.c bank_api_json.h \
bank_api_admin.c
libtalerbank_la_LIBADD = \
-lgnunetutil \
-ljansson \
$(XLIB)
if HAVE_LIBCURL
libtalerbank_la_LIBADD += -lcurl
else
if HAVE_LIBGNURL
libtalerbank_la_LIBADD += -lgnurl
endif
endif
#check_PROGRAMS = \
# test_bank_api
#TESTS = \
# $(check_PROGRAMS)
#test_bank_api_SOURCES = \
# test_bank_api.c
#test_bank_api_LDADD = \
# libtalerbank.la \
# $(LIBGCRYPT_LIBS) \
# $(top_builddir)/src/util/libtalerutil.la \
# -lgnunetutil \
# -ljansson

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src/bank-lib/bank_api_admin.c Normal file
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/*
This file is part of TALER
Copyright (C) 2015, 2016 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, If not, see
<http://www.gnu.org/licenses/>
*/
/**
* @file bank-lib/bank_api_admin.c
* @brief Implementation of the /admin/ requests of the bank's HTTP API
* @author Christian Grothoff
*/
#include "platform.h"
#include <curl/curl.h>
#include <jansson.h>
#include <microhttpd.h> /* just for HTTP status codes */
#include <gnunet/gnunet_util_lib.h>
#include "taler_bank_service.h"
#include "bank_api_json.h"
#include "bank_api_context.h"
#include "taler_signatures.h"
/**
* @brief An admin/add/incoming Handle
*/
struct TALER_BANK_AdminAddIncomingHandle
{
/**
* The connection to bank this request handle will use
*/
struct TALER_BANK_Context *bank;
/**
* The url for this request.
*/
char *url;
/**
* JSON encoding of the request to POST.
*/
char *json_enc;
/**
* Handle for the request.
*/
struct BAC_Job *job;
/**
* HTTP headers for the request.
*/
struct curl_slist *headers;
/**
* Function to call with the result.
*/
TALER_BANK_AdminAddIncomingResultCallback cb;
/**
* Closure for @a cb.
*/
void *cb_cls;
/**
* Download buffer
*/
struct BAC_DownloadBuffer db;
};
/**
* Function called when we're done processing the
* HTTP /admin/add/incoming request.
*
* @param cls the `struct TALER_BANK_AdminAddIncomingHandle`
* @param eh the curl request handle
*/
static void
handle_admin_add_incoming_finished (void *cls,
CURL *eh)
{
struct TALER_BANK_AdminAddIncomingHandle *aai = cls;
long response_code;
json_t *json;
aai->job = NULL;
json = BAC_download_get_result (&aai->db,
eh,
&response_code);
switch (response_code)
{
case 0:
break;
case MHD_HTTP_OK:
break;
case MHD_HTTP_BAD_REQUEST:
/* This should never happen, either us or the bank is buggy
(or API version conflict); just pass JSON reply to the application */
break;
case MHD_HTTP_FORBIDDEN:
/* Access denied */
break;
case MHD_HTTP_UNAUTHORIZED:
/* Nothing really to verify, bank says one of the signatures is
invalid; as we checked them, this should never happen, we
should pass the JSON reply to the application */
break;
case MHD_HTTP_NOT_FOUND:
/* Nothing really to verify, this should never
happen, we should pass the JSON reply to the application */
break;
case MHD_HTTP_INTERNAL_SERVER_ERROR:
/* Server had an internal issue; we should retry, but this API
leaves this to the application */
break;
default:
/* unexpected response code */
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u\n",
response_code);
GNUNET_break (0);
response_code = 0;
break;
}
aai->cb (aai->cb_cls,
response_code);
json_decref (json);
TALER_BANK_admin_add_incoming_cancel (aai);
}
/**
* Notify the bank that we have received an incoming transaction
* which fills a reserve. Note that this API is an administrative
* API and thus not accessible to typical bank clients, but only
* to the operators of the bank.
*
* @param bank the bank handle; the bank must be ready to operate
* @param reserve_pub public key of the reserve
* @param amount amount that was deposited
* @param execution_date when did we receive the amount
* @param wire wire details
* @param res_cb the callback to call when the final result for this request is available
* @param res_cb_cls closure for the above callback
* @return NULL
* if the inputs are invalid (i.e. invalid amount).
* In this case, the callback is not called.
*/
struct TALER_BANK_AdminAddIncomingHandle *
TALER_BANK_admin_add_incoming (struct TALER_BANK_Context *bank,
const struct TALER_WireTransferIdentifierRawP *wtid,
const struct TALER_Amount *amount,
const json_t *wire,
TALER_BANK_AdminAddIncomingResultCallback res_cb,
void *res_cb_cls)
{
struct TALER_BANK_AdminAddIncomingHandle *aai;
json_t *admin_obj;
CURL *eh;
admin_obj = json_pack ("{s:o, s:o," /* reserve_pub/amount */
" s:O}", /* execution_Date/wire */
"wtid", TALER_json_from_data (wtid,
sizeof (*wtid)),
"amount", TALER_json_from_amount (amount),
"wire", wire);
aai = GNUNET_new (struct TALER_BANK_AdminAddIncomingHandle);
aai->bank = bank;
aai->cb = res_cb;
aai->cb_cls = res_cb_cls;
aai->url = BAC_path_to_url (bank, "/admin/add/incoming");
eh = curl_easy_init ();
GNUNET_assert (NULL != (aai->json_enc =
json_dumps (admin_obj,
JSON_COMPACT)));
json_decref (admin_obj);
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_URL,
aai->url));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_POSTFIELDS,
aai->json_enc));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_POSTFIELDSIZE,
strlen (aai->json_enc)));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_WRITEFUNCTION,
&BAC_download_cb));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_WRITEDATA,
&aai->db));
aai->job = BAC_job_add (bank,
eh,
GNUNET_YES,
&handle_admin_add_incoming_finished,
aai);
return aai;
}
/**
* Cancel an add incoming. This function cannot be used on a request
* handle if a response is already served for it.
*
* @param aai the admin add incoming request handle
*/
void
TALER_BANK_admin_add_incoming_cancel (struct TALER_BANK_AdminAddIncomingHandle *aai)
{
if (NULL != aai->job)
{
BAC_job_cancel (aai->job);
aai->job = NULL;
}
curl_slist_free_all (aai->headers);
GNUNET_free_non_null (aai->db.buf);
GNUNET_free (aai->url);
GNUNET_free (aai->json_enc);
GNUNET_free (aai);
}
/* end of bank_api_admin.c */

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/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, If not, see
<http://www.gnu.org/licenses/>
*/
/**
* @file bank-lib/bank_api_context.c
* @brief Implementation of the context part of the bank's HTTP API
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
* @author Christian Grothoff
*/
#include "platform.h"
#include <curl/curl.h>
#include "taler_bank_service.h"
#include "bank_api_context.h"
/**
* Log error related to CURL operations.
*
* @param type log level
* @param function which function failed to run
* @param code what was the curl error code
*/
#define CURL_STRERROR(type, function, code) \
GNUNET_log (type, \
"Curl function `%s' has failed at `%s:%d' with error: %s\n", \
function, __FILE__, __LINE__, curl_easy_strerror (code));
/**
* Print JSON parsing related error information
*/
#define JSON_WARN(error) \
GNUNET_log (GNUNET_ERROR_TYPE_WARNING, \
"JSON parsing failed at %s:%u: %s (%s)\n", \
__FILE__, __LINE__, error.text, error.source)
/**
* Failsafe flag. Raised if our constructor fails to initialize
* the Curl library.
*/
static int TALER_BANK_curl_fail;
/**
* Jobs are CURL requests running within a `struct TALER_BANK_Context`.
*/
struct BAC_Job
{
/**
* We keep jobs in a DLL.
*/
struct BAC_Job *next;
/**
* We keep jobs in a DLL.
*/
struct BAC_Job *prev;
/**
* Easy handle of the job.
*/
CURL *easy_handle;
/**
* Context this job runs in.
*/
struct TALER_BANK_Context *ctx;
/**
* Function to call upon completion.
*/
BAC_JobCompletionCallback jcc;
/**
* Closure for @e jcc.
*/
void *jcc_cls;
};
/**
* Context
*/
struct TALER_BANK_Context
{
/**
* Curl multi handle
*/
CURLM *multi;
/**
* Curl share handle
*/
CURLSH *share;
/**
* We keep jobs in a DLL.
*/
struct BAC_Job *jobs_head;
/**
* We keep jobs in a DLL.
*/
struct BAC_Job *jobs_tail;
/**
* HTTP header "application/json", created once and used
* for all requests that need it.
*/
struct curl_slist *json_header;
/**
* Base URL of the bank.
*/
char *url;
};
/**
* Initialise this library. This function should be called before using any of
* the following functions.
*
* @param url HTTP base URL for the bank
* @return library context
*/
struct TALER_BANK_Context *
TALER_BANK_init (const char *url)
{
struct TALER_BANK_Context *ctx;
CURLM *multi;
CURLSH *share;
if (TALER_BANK_curl_fail)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Curl was not initialised properly\n");
return NULL;
}
if (NULL == (multi = curl_multi_init ()))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to create a Curl multi handle\n");
return NULL;
}
if (NULL == (share = curl_share_init ()))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to create a Curl share handle\n");
return NULL;
}
ctx = GNUNET_new (struct TALER_BANK_Context);
ctx->multi = multi;
ctx->share = share;
ctx->url = GNUNET_strdup (url);
GNUNET_assert (NULL != (ctx->json_header =
curl_slist_append (NULL,
"Content-Type: application/json")));
return ctx;
}
/**
* Schedule a CURL request to be executed and call the given @a jcc
* upon its completion. Note that the context will make use of the
* CURLOPT_PRIVATE facility of the CURL @a eh. Applications can
* instead use #BAC_easy_to_closure to extract the @a jcc_cls argument
* from a valid @a eh afterwards.
*
* This function modifies the CURL handle to add the
* "Content-Type: application/json" header if @a add_json is set.
*
* @param ctx context to execute the job in
* @param eh curl easy handle for the request, will
* be executed AND cleaned up
* @param add_json add "application/json" content type header
* @param jcc callback to invoke upon completion
* @param jcc_cls closure for @a jcc
*/
struct BAC_Job *
BAC_job_add (struct TALER_BANK_Context *ctx,
CURL *eh,
int add_json,
BAC_JobCompletionCallback jcc,
void *jcc_cls)
{
struct BAC_Job *job;
if (GNUNET_YES == add_json)
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_HTTPHEADER,
ctx->json_header));
job = GNUNET_new (struct BAC_Job);
job->easy_handle = eh;
job->ctx = ctx;
job->jcc = jcc;
job->jcc_cls = jcc_cls;
GNUNET_CONTAINER_DLL_insert (ctx->jobs_head,
ctx->jobs_tail,
job);
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_PRIVATE,
job));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_SHARE,
ctx->share));
GNUNET_assert (CURLM_OK ==
curl_multi_add_handle (ctx->multi,
eh));
return job;
}
/**
* Obtain the `jcc_cls` argument from an `eh` that was
* given to #BAC_job_add().
*
* @param eh easy handle that was used
* @return the `jcc_cls` that was given to #BAC_job_add().
*/
void *
BAC_easy_to_closure (CURL *eh)
{
struct BAC_Job *job;
GNUNET_assert (CURLE_OK ==
curl_easy_getinfo (eh,
CURLINFO_PRIVATE,
(char **) &job));
return job->jcc_cls;
}
/**
* Cancel a job. Must only be called before the job completion
* callback is called for the respective job.
*
* @param job job to cancel
*/
void
BAC_job_cancel (struct BAC_Job *job)
{
struct TALER_BANK_Context *ctx = job->ctx;
GNUNET_CONTAINER_DLL_remove (ctx->jobs_head,
ctx->jobs_tail,
job);
GNUNET_assert (CURLM_OK ==
curl_multi_remove_handle (ctx->multi,
job->easy_handle));
curl_easy_cleanup (job->easy_handle);
GNUNET_free (job);
}
/**
* Run the main event loop for the Taler interaction.
*
* @param ctx the library context
*/
void
TALER_BANK_perform (struct TALER_BANK_Context *ctx)
{
CURLMsg *cmsg;
struct BAC_Job *job;
int n_running;
int n_completed;
(void) curl_multi_perform (ctx->multi,
&n_running);
while (NULL != (cmsg = curl_multi_info_read (ctx->multi,
&n_completed)))
{
/* Only documented return value is CURLMSG_DONE */
GNUNET_break (CURLMSG_DONE == cmsg->msg);
GNUNET_assert (CURLE_OK ==
curl_easy_getinfo (cmsg->easy_handle,
CURLINFO_PRIVATE,
(char **) &job));
GNUNET_assert (job->ctx == ctx);
job->jcc (job->jcc_cls,
cmsg->easy_handle);
BAC_job_cancel (job);
}
}
/**
* Obtain the information for a select() call to wait until
* #TALER_BANK_perform() is ready again. Note that calling
* any other TALER_BANK-API may also imply that the library
* is again ready for #TALER_BANK_perform().
*
* Basically, a client should use this API to prepare for select(),
* then block on select(), then call #TALER_BANK_perform() and then
* start again until the work with the context is done.
*
* This function will NOT zero out the sets and assumes that @a max_fd
* and @a timeout are already set to minimal applicable values. It is
* safe to give this API FD-sets and @a max_fd and @a timeout that are
* already initialized to some other descriptors that need to go into
* the select() call.
*
* @param ctx context to get the event loop information for
* @param read_fd_set will be set for any pending read operations
* @param write_fd_set will be set for any pending write operations
* @param except_fd_set is here because curl_multi_fdset() has this argument
* @param max_fd set to the highest FD included in any set;
* if the existing sets have no FDs in it, the initial
* value should be "-1". (Note that `max_fd + 1` will need
* to be passed to select().)
* @param timeout set to the timeout in milliseconds (!); -1 means
* no timeout (NULL, blocking forever is OK), 0 means to
* proceed immediately with #TALER_BANK_perform().
*/
void
TALER_BANK_get_select_info (struct TALER_BANK_Context *ctx,
fd_set *read_fd_set,
fd_set *write_fd_set,
fd_set *except_fd_set,
int *max_fd,
long *timeout)
{
long to;
int m;
m = -1;
GNUNET_assert (CURLM_OK ==
curl_multi_fdset (ctx->multi,
read_fd_set,
write_fd_set,
except_fd_set,
&m));
to = *timeout;
*max_fd = GNUNET_MAX (m, *max_fd);
GNUNET_assert (CURLM_OK ==
curl_multi_timeout (ctx->multi,
&to));
/* Only if what we got back from curl is smaller than what we
already had (-1 == infinity!), then update timeout */
if ( (to < *timeout) &&
(-1 != to) )
*timeout = to;
if ( (-1 == (*timeout)) &&
(NULL != ctx->jobs_head) )
*timeout = to;
}
/**
* Cleanup library initialisation resources. This function should be called
* after using this library to cleanup the resources occupied during library's
* initialisation.
*
* @param ctx the library context
*/
void
TALER_BANK_fini (struct TALER_BANK_Context *ctx)
{
/* all jobs must have been cancelled at this time, assert this */
GNUNET_assert (NULL == ctx->jobs_head);
curl_share_cleanup (ctx->share);
curl_multi_cleanup (ctx->multi);
curl_slist_free_all (ctx->json_header);
GNUNET_free (ctx->url);
GNUNET_free (ctx);
}
/**
* Obtain the URL to use for an API request.
*
* @param h the mint handle to query
* @param path Taler API path (i.e. "/reserve/withdraw")
* @return the full URI to use with cURL
*/
char *
MAH_path_to_url (struct TALER_BANK_Context *h,
const char *path)
{
char *url;
if ( ('/' == path[0]) &&
(0 < strlen (h->url)) &&
('/' == h->url[strlen (h->url) - 1]) )
path++; /* avoid generating URL with "//" from concat */
GNUNET_asprintf (&url,
"%s%s",
h->url,
path);
return url;
}
/**
* Callback used when downloading the reply to an HTTP request.
* Just appends all of the data to the `buf` in the
* `struct BAC_DownloadBuffer` for further processing. The size of
* the download is limited to #GNUNET_MAX_MALLOC_CHECKED, if
* the download exceeds this size, we abort with an error.
*
* @param bufptr data downloaded via HTTP
* @param size size of an item in @a bufptr
* @param nitems number of items in @a bufptr
* @param cls the `struct KeysRequest`
* @return number of bytes processed from @a bufptr
*/
size_t
BAC_download_cb (char *bufptr,
size_t size,
size_t nitems,
void *cls)
{
struct BAC_DownloadBuffer *db = cls;
size_t msize;
void *buf;
if (0 == size * nitems)
{
/* Nothing (left) to do */
return 0;
}
msize = size * nitems;
if ( (msize + db->buf_size) >= GNUNET_MAX_MALLOC_CHECKED)
{
db->eno = ENOMEM;
return 0; /* signals an error to curl */
}
db->buf = GNUNET_realloc (db->buf,
db->buf_size + msize);
buf = db->buf + db->buf_size;
memcpy (buf, bufptr, msize);
db->buf_size += msize;
return msize;
}
/**
* Obtain information about the final result about the
* HTTP download. If the download was successful, parses
* the JSON in the @a db and returns it. Also returns
* the HTTP @a response_code. If the download failed,
* the return value is NULL. The response code is set
* in any case, on download errors to zero.
*
* Calling this function also cleans up @a db.
*
* @param db download buffer
* @param eh CURL handle (to get the response code)
* @param[out] response_code set to the HTTP response code
* (or zero if we aborted the download, i.e.
* because the response was too big, or if
* the JSON we received was malformed).
* @return NULL if downloading a JSON reply failed
*/
json_t *
BAC_download_get_result (struct BAC_DownloadBuffer *db,
CURL *eh,
long *response_code)
{
json_t *json;
json_error_t error;
char *ct;
if ( (CURLE_OK !=
curl_easy_getinfo (eh,
CURLINFO_CONTENT_TYPE,
&ct)) ||
(NULL == ct) ||
(0 != strcasecmp (ct,
"application/json")) )
{
/* No content type or explicitly not JSON, refuse to parse
(but keep response code) */
if (CURLE_OK !=
curl_easy_getinfo (eh,
CURLINFO_RESPONSE_CODE,
response_code))
{
/* unexpected error... */
GNUNET_break (0);
*response_code = 0;
}
return NULL;
}
json = NULL;
if (0 == db->eno)
{
json = json_loadb (db->buf,
db->buf_size,
JSON_REJECT_DUPLICATES | JSON_DISABLE_EOF_CHECK,
&error);
if (NULL == json)
{
JSON_WARN (error);
*response_code = 0;
}
}
GNUNET_free_non_null (db->buf);
db->buf = NULL;
db->buf_size = 0;
if (NULL != json)
{
if (CURLE_OK !=
curl_easy_getinfo (eh,
CURLINFO_RESPONSE_CODE,
response_code))
{
/* unexpected error... */
GNUNET_break (0);
*response_code = 0;
}
}
return json;
}
/**
* Initial global setup logic, specifically runs the Curl setup.
*/
__attribute__ ((constructor))
void
TALER_BANK_constructor__ (void)
{
CURLcode ret;
if (CURLE_OK != (ret = curl_global_init (CURL_GLOBAL_DEFAULT)))
{
CURL_STRERROR (GNUNET_ERROR_TYPE_ERROR,
"curl_global_init",
ret);
TALER_BANK_curl_fail = 1;
}
}
/**
* Cleans up after us, specifically runs the Curl cleanup.
*/
__attribute__ ((destructor))
void
TALER_BANK_destructor__ (void)
{
if (TALER_BANK_curl_fail)
return;
curl_global_cleanup ();
}
/* end of bank_api_context.c */

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/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, If not, see
<http://www.gnu.org/licenses/>
*/
/**
* @file bank-lib/bank_api_context.h
* @brief Internal interface to the context part of the bank's HTTP API
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
* @author Christian Grothoff
*/
#include "platform.h"
#include <curl/curl.h>
#include <gnunet/gnunet_util_lib.h>
#include "taler_bank_service.h"
#include "taler_signatures.h"
/**
* Entry in the context's job queue.
*/
struct BAC_Job;
/**
* Function to call upon completion of a job.
*
* @param cls closure
* @param eh original easy handle (for inspection)
*/
typedef void
(*BAC_JobCompletionCallback)(void *cls,
CURL *eh);
/**
* Schedule a CURL request to be executed and call the given @a jcc
* upon its completion. Note that the context will make use of the
* CURLOPT_PRIVATE facility of the CURL @a eh. Applications can
* instead use #BAC_easy_to_closure to extract the @a jcc_cls argument
* from a valid @a eh afterwards.
*
* This function modifies the CURL handle to add the
* "Content-Type: application/json" header if @a add_json is set.
*
* @param ctx context to execute the job in
* @param eh curl easy handle for the request, will
* be executed AND cleaned up
* @param add_json add "application/json" content type header
* @param jcc callback to invoke upon completion
* @param jcc_cls closure for @a jcc
*/
struct BAC_Job *
BAC_job_add (struct TALER_BANK_Context *ctx,
CURL *eh,
int add_json,
BAC_JobCompletionCallback jcc,
void *jcc_cls);
/**
* Obtain the `jcc_cls` argument from an `eh` that was
* given to #BAC_job_add().
*
* @param eh easy handle that was used
* @return the `jcc_cls` that was given to #BAC_job_add().
*/
void *
BAC_easy_to_closure (CURL *eh);
/**
* Cancel a job. Must only be called before the job completion
* callback is called for the respective job.
*
* @param job job to cancel
*/
void
BAC_job_cancel (struct BAC_Job *job);
/**
* @brief Buffer data structure we use to buffer the HTTP download
* before giving it to the JSON parser.
*/
struct BAC_DownloadBuffer
{
/**
* Download buffer
*/
void *buf;
/**
* The size of the download buffer
*/
size_t buf_size;
/**
* Error code (based on libc errno) if we failed to download
* (i.e. response too large).
*/
int eno;
};
/**
* Callback used when downloading the reply to an HTTP request.
* Just appends all of the data to the `buf` in the
* `struct BAC_DownloadBuffer` for further processing. The size of
* the download is limited to #GNUNET_MAX_MALLOC_CHECKED, if
* the download exceeds this size, we abort with an error.
*
* Should be used by the various routines as the
* CURLOPT_WRITEFUNCTION. A `struct BAC_DownloadBuffer` needs to be
* passed to the CURLOPT_WRITEDATA.
*
* Afterwards, `eno` needs to be checked to ensure that the download
* completed correctly.
*
* @param bufptr data downloaded via HTTP
* @param size size of an item in @a bufptr
* @param nitems number of items in @a bufptr
* @param cls the `struct KeysRequest`
* @return number of bytes processed from @a bufptr
*/
size_t
BAC_download_cb (char *bufptr,
size_t size,
size_t nitems,
void *cls);
/**
* Obtain information about the final result about the
* HTTP download. If the download was successful, parses
* the JSON in the @a db and returns it. Also returns
* the HTTP @a response_code. If the download failed,
* the return value is NULL. The response code is set
* in any case, on download errors to zero.
*
* Calling this function also cleans up @a db.
*
* @param db download buffer
* @param eh CURL handle (to get the response code)
* @param[out] response_code set to the HTTP response code
* (or zero if we aborted the download, i.e.
* because the response was too big, or if
* the JSON we received was malformed).
* @return NULL if downloading a JSON reply failed
*/
json_t *
BAC_download_get_result (struct BAC_DownloadBuffer *db,
CURL *eh,
long *response_code);
/**
* Obtain the URL to use for an API request.
*
* @param h the bank handle to query
* @param path Taler API path (i.e. "/reserve/withdraw")
* @return the full URI to use with cURL
*/
char *
BAC_path_to_url (struct TALER_BANK_Context *h,
const char *path);
/* end of bank_api_context.h */

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/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file bank-lib/bank_api_json.c
* @brief functions to parse incoming requests (JSON snippets)
* @author Florian Dold
* @author Benedikt Mueller
* @author Christian Grothoff
*/
#include "platform.h"
#include "bank_api_json.h"
/**
* Navigate and parse data in a JSON tree.
*
* @param root the JSON node to start the navigation at.
* @param spec parse specification array
* @return offset in @a spec where parsing failed, -1 on success (!)
*/
static int
parse_json (json_t *root,
struct BAJ_Specification *spec)
{
int i;
json_t *pos; /* what's our current position? */
pos = root;
for (i=0;BAJ_CMD_END != spec[i].cmd;i++)
{
pos = json_object_get (root,
spec[i].field);
if (NULL == pos)
{
GNUNET_break_op (0);
return i;
}
switch (spec[i].cmd)
{
case BAJ_CMD_END:
GNUNET_assert (0);
return i;
case BAJ_CMD_AMOUNT:
if (GNUNET_OK !=
TALER_json_to_amount (pos,
spec[i].details.amount))
{
GNUNET_break_op (0);
return i;
}
break;
case BAJ_CMD_TIME_ABSOLUTE:
if (GNUNET_OK !=
TALER_json_to_abs (pos,
spec[i].details.abs_time))
{
GNUNET_break_op (0);
return i;
}
break;
case BAJ_CMD_STRING:
{
const char *str;
str = json_string_value (pos);
if (NULL == str)
{
GNUNET_break_op (0);
return i;
}
*spec[i].details.strptr = str;
}
break;
case BAJ_CMD_BINARY_FIXED:
{
const char *str;
int res;
str = json_string_value (pos);
if (NULL == str)
{
GNUNET_break_op (0);
return i;
}
res = GNUNET_STRINGS_string_to_data (str, strlen (str),
spec[i].details.fixed_data.dest,
spec[i].details.fixed_data.dest_size);
if (GNUNET_OK != res)
{
GNUNET_break_op (0);
return i;
}
}
break;
case BAJ_CMD_BINARY_VARIABLE:
{
const char *str;
size_t size;
void *data;
int res;
str = json_string_value (pos);
if (NULL == str)
{
GNUNET_break_op (0);
return i;
}
size = (strlen (str) * 5) / 8;
if (size >= 1024)
{
GNUNET_break_op (0);
return i;
}
data = GNUNET_malloc (size);
res = GNUNET_STRINGS_string_to_data (str,
strlen (str),
data,
size);
if (GNUNET_OK != res)
{
GNUNET_break_op (0);
GNUNET_free (data);
return i;
}
*spec[i].details.variable_data.dest_p = data;
*spec[i].details.variable_data.dest_size_p = size;
}
break;
case BAJ_CMD_RSA_PUBLIC_KEY:
{
size_t size;
const char *str;
int res;
void *buf;
str = json_string_value (pos);
if (NULL == str)
{
GNUNET_break_op (0);
return i;
}
size = (strlen (str) * 5) / 8;
buf = GNUNET_malloc (size);
res = GNUNET_STRINGS_string_to_data (str,
strlen (str),
buf,
size);
if (GNUNET_OK != res)
{
GNUNET_free (buf);
GNUNET_break_op (0);
return i;
}
*spec[i].details.rsa_public_key
= GNUNET_CRYPTO_rsa_public_key_decode (buf,
size);
GNUNET_free (buf);
if (NULL == spec[i].details.rsa_public_key)
{
GNUNET_break_op (0);
return i;
}
}
break;
case BAJ_CMD_RSA_SIGNATURE:
{
size_t size;
const char *str;
int res;
void *buf;
str = json_string_value (pos);
if (NULL == str)
{
GNUNET_break_op (0);
return i;
}
size = (strlen (str) * 5) / 8;
buf = GNUNET_malloc (size);
res = GNUNET_STRINGS_string_to_data (str,
strlen (str),
buf,
size);
if (GNUNET_OK != res)
{
GNUNET_free (buf);
GNUNET_break_op (0);
return i;
}
*spec[i].details.rsa_signature
= GNUNET_CRYPTO_rsa_signature_decode (buf,
size);
GNUNET_free (buf);
if (NULL == spec[i].details.rsa_signature)
return i;
}
break;
case BAJ_CMD_UINT16:
{
json_int_t val;
if (! json_is_integer (pos))
{
GNUNET_break_op (0);
return i;
}
val = json_integer_value (pos);
if ( (0 > val) || (val > UINT16_MAX) )
{
GNUNET_break_op (0);
return i;
}
*spec[i].details.u16 = (uint16_t) val;
}
break;
case BAJ_CMD_UINT64:
{
json_int_t val;
if (! json_is_integer (pos))
{
GNUNET_break_op (0);
return i;
}
val = json_integer_value (pos);
*spec[i].details.u64 = (uint64_t) val;
}
break;
case BAJ_CMD_JSON_OBJECT:
{
if (! (json_is_object (pos) || json_is_array (pos)) )
{
GNUNET_break_op (0);
return i;
}
json_incref (pos);
*spec[i].details.obj = pos;
}
break;
default:
GNUNET_break (0);
return i;
}
}
return -1; /* all OK! */
}
/**
* Free all elements allocated during a
* #BAJ_parse_json() operation.
*
* @param spec specification of the parse operation
* @param end number of elements in @a spec to process
*/
static void
parse_free (struct BAJ_Specification *spec,
int end)
{
int i;
for (i=0;i<end;i++)
{
switch (spec[i].cmd)
{
case BAJ_CMD_END:
GNUNET_assert (0);
return;
case BAJ_CMD_AMOUNT:
break;
case BAJ_CMD_TIME_ABSOLUTE:
break;
case BAJ_CMD_BINARY_FIXED:
break;
case BAJ_CMD_STRING:
break;
case BAJ_CMD_BINARY_VARIABLE:
GNUNET_free (*spec[i].details.variable_data.dest_p);
*spec[i].details.variable_data.dest_p = NULL;
*spec[i].details.variable_data.dest_size_p = 0;
break;
case BAJ_CMD_RSA_PUBLIC_KEY:
GNUNET_CRYPTO_rsa_public_key_free (*spec[i].details.rsa_public_key);
*spec[i].details.rsa_public_key = NULL;
break;
case BAJ_CMD_RSA_SIGNATURE:
GNUNET_CRYPTO_rsa_signature_free (*spec[i].details.rsa_signature);
*spec[i].details.rsa_signature = NULL;
break;
case BAJ_CMD_JSON_OBJECT:
json_decref (*spec[i].details.obj);
*spec[i].details.obj = NULL;
break;
default:
GNUNET_break (0);
break;
}
}
}
/**
* Navigate and parse data in a JSON tree.
*
* @param root the JSON node to start the navigation at.
* @param spec parse specification array
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
BAJ_parse_json (const json_t *root,
struct BAJ_Specification *spec)
{
int ret;
ret = parse_json ((json_t *) root,
spec);
if (-1 == ret)
return GNUNET_OK;
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"JSON field `%s` (%d) had unexpected value\n",
spec[ret].field,
ret);
parse_free (spec, ret);
return GNUNET_SYSERR;
}
/**
* Free all elements allocated during a
* #BAJ_parse_json() operation.
*
* @param spec specification of the parse operation
*/
void
BAJ_parse_free (struct BAJ_Specification *spec)
{
int i;
for (i=0;BAJ_CMD_END != spec[i].cmd;i++) ;
parse_free (spec, i);
}
/**
* The expected field stores a string.
*
* @param name name of the JSON field
* @param strptr where to store a pointer to the field
*/
struct BAJ_Specification
BAJ_spec_string (const char *name,
const char **strptr)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_STRING,
.field = name,
.details.strptr = strptr
};
return ret;
}
/**
* Specification for parsing an absolute time value.
*
* @param name name of the JSON field
* @param at where to store the absolute time found under @a name
*/
struct BAJ_Specification
BAJ_spec_absolute_time (const char *name,
struct GNUNET_TIME_Absolute *at)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_TIME_ABSOLUTE,
.field = name,
.details.abs_time = at
};
return ret;
}
/**
* Specification for parsing an amount value.
*
* @param name name of the JSON field
* @param amount where to store the amount found under @a name
*/
struct BAJ_Specification
BAJ_spec_amount (const char *name,
struct TALER_Amount *amount)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_AMOUNT,
.field = name,
.details.amount = amount
};
return ret;
}
/**
* 16-bit integer.
*
* @param name name of the JSON field
* @param[out] u16 where to store the integer found under @a name
*/
struct BAJ_Specification
BAJ_spec_uint16 (const char *name,
uint16_t *u16)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_UINT16,
.field = name,
.details.u16 = u16
};
return ret;
}
/**
* 64-bit integer.
*
* @param name name of the JSON field
* @param[out] u64 where to store the integer found under @a name
*/
struct BAJ_Specification
BAJ_spec_uint64 (const char *name,
uint64_t *u64)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_UINT64,
.field = name,
.details.u64 = u64
};
return ret;
}
/**
* JSON object.
*
* @param name name of the JSON field
* @param[out] jsonp where to store the JSON found under @a name
*/
struct BAJ_Specification
BAJ_spec_json (const char *name,
json_t **jsonp)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_JSON_OBJECT,
.field = name,
.details.obj = jsonp
};
return ret;
}
/**
* Specification for parsing an RSA public key.
*
* @param name name of the JSON field
* @param pk where to store the RSA key found under @a name
*/
struct BAJ_Specification
BAJ_spec_rsa_public_key (const char *name,
struct GNUNET_CRYPTO_rsa_PublicKey **pk)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_RSA_PUBLIC_KEY,
.field = name,
.details.rsa_public_key = pk
};
return ret;
}
/**
* Specification for parsing an RSA signature.
*
* @param name name of the JSON field
* @param sig where to store the RSA signature found under @a name
*/
struct BAJ_Specification
BAJ_spec_rsa_signature (const char *name,
struct GNUNET_CRYPTO_rsa_Signature **sig)
{
struct BAJ_Specification ret =
{
.cmd = BAJ_CMD_RSA_SIGNATURE,
.field = name,
.details.rsa_signature = sig
};
return ret;
}
/* end of bank_api_json.c */

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/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file mint-lib/mint_api_json.h
* @brief functions to parse incoming requests (JSON snippets)
* @author Florian Dold
* @author Benedikt Mueller
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include "taler_util.h"
#include <jansson.h>
/**
* Enumeration with the various commands for the
* #BAJ_parse_json interpreter.
*/
enum BAJ_Command
{
/**
* End of command list.
*/
BAJ_CMD_END,
/**
* Parse amount at current position.
*/
BAJ_CMD_AMOUNT,
/**
* Parse absolute time at current position.
*/
BAJ_CMD_TIME_ABSOLUTE,
/**
* Parse fixed binary value at current position.
*/
BAJ_CMD_BINARY_FIXED,
/**
* Parse variable-size binary value at current position.
*/
BAJ_CMD_BINARY_VARIABLE,
/**
* Parse RSA public key at current position.
*/
BAJ_CMD_RSA_PUBLIC_KEY,
/**
* Parse RSA signature at current position.
*/
BAJ_CMD_RSA_SIGNATURE,
/**
* Parse `const char *` JSON string at current position.
*/
BAJ_CMD_STRING,
/**
* Parse `uint16_t` integer at the current position.
*/
BAJ_CMD_UINT16,
/**
* Parse `uint64_t` integer at the current position.
*/
BAJ_CMD_UINT64,
/**
* Parse JSON object at the current position.
*/
BAJ_CMD_JSON_OBJECT,
/**
* Parse ??? at current position.
*/
BAJ_CMD_C
};
/**
* @brief Entry in parser specification for #BAJ_parse_json.
*/
struct BAJ_Specification
{
/**
* Command to execute.
*/
enum BAJ_Command cmd;
/**
* Name of the field to access.
*/
const char *field;
/**
* Further details for the command.
*/
union {
/**
* Where to store amount for #BAJ_CMD_AMOUNT.
*/
struct TALER_Amount *amount;
/**
* Where to store time, for #BAJ_CMD_TIME_ABSOLUTE.
*/
struct GNUNET_TIME_Absolute *abs_time;
/**
* Where to write binary data, for #BAJ_CMD_BINARY_FIXED.
*/
struct {
/**
* Where to write the data.
*/
void *dest;
/**
* How many bytes to write to @e dest.
*/
size_t dest_size;
} fixed_data;
/**
* Where to write binary data, for #BAJ_CMD_BINARY_VARIABLE.
*/
struct {
/**
* Where to store the pointer with the data (is allocated).
*/
void **dest_p;
/**
* Where to store the number of bytes allocated at `*dest`.
*/
size_t *dest_size_p;
} variable_data;
/**
* Where to store the RSA public key for #BAJ_CMD_RSA_PUBLIC_KEY
*/
struct GNUNET_CRYPTO_rsa_PublicKey **rsa_public_key;
/**
* Where to store the RSA signature for #BAJ_CMD_RSA_SIGNATURE
*/
struct GNUNET_CRYPTO_rsa_Signature **rsa_signature;
/**
* Details for #BAJ_CMD_EDDSA_SIGNATURE
*/
struct {
/**
* Where to store the purpose.
*/
struct GNUNET_CRYPTO_EccSignaturePurpose **purpose_p;
/**
* Key to verify the signature against.
*/
const struct GNUNET_CRYPTO_EddsaPublicKey *pub_key;
} eddsa_signature;
/**
* Where to store a pointer to the string.
*/
const char **strptr;
/**
* Where to store 16-bit integer.
*/
uint16_t *u16;
/**
* Where to store 64-bit integer.
*/
uint64_t *u64;
/**
* Where to store a JSON object.
*/
json_t **obj;
} details;
};
/**
* Navigate and parse data in a JSON tree.
*
* @param root the JSON node to start the navigation at.
* @param spec parse specification array
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
BAJ_parse_json (const json_t *root,
struct BAJ_Specification *spec);
/**
* Free all elements allocated during a
* #BAJ_parse_json() operation.
*
* @param spec specification of the parse operation
*/
void
BAJ_parse_free (struct BAJ_Specification *spec);
/**
* End of a parser specification.
*/
#define BAJ_spec_end { .cmd = BAJ_CMD_END }
/**
* Fixed size object (in network byte order, encoded using Crockford
* Base32hex encoding).
*
* @param name name of the JSON field
* @param obj pointer where to write the data (type of `*obj` will determine size)
*/
#define BAJ_spec_fixed_auto(name,obj) { .cmd = BAJ_CMD_BINARY_FIXED, .field = name, .details.fixed_data.dest = obj, .details.fixed_data.dest_size = sizeof (*obj) }
/**
* Variable size object (in network byte order, encoded using Crockford
* Base32hex encoding).
*
* @param name name of the JSON field
* @param obj pointer where to write the data (a `void **`)
* @param size where to store the number of bytes allocated for @a obj (of type `size_t *`
*/
#define BAJ_spec_varsize(name,obj,size) { .cmd = BAJ_CMD_BINARY_VARIABLE, .field = name, .details.variable_data.dest_p = obj, .details.variable_data.dest_size_p = size }
/**
* The expected field stores a string.
*
* @param name name of the JSON field
* @param strptr where to store a pointer to the field
*/
struct BAJ_Specification
BAJ_spec_string (const char *name,
const char **strptr);
/**
* Absolute time.
*
* @param name name of the JSON field
* @param[out] at where to store the absolute time found under @a name
*/
struct BAJ_Specification
BAJ_spec_absolute_time (const char *name,
struct GNUNET_TIME_Absolute *at);
/**
* 16-bit integer.
*
* @param name name of the JSON field
* @param[out] u16 where to store the integer found under @a name
*/
struct BAJ_Specification
BAJ_spec_uint16 (const char *name,
uint16_t *u16);
/**
* 64-bit integer.
*
* @param name name of the JSON field
* @param[out] u64 where to store the integer found under @a name
*/
struct BAJ_Specification
BAJ_spec_uint64 (const char *name,
uint64_t *u64);
/**
* JSON object.
*
* @param name name of the JSON field
* @param[out] jsonp where to store the JSON found under @a name
*/
struct BAJ_Specification
BAJ_spec_json (const char *name,
json_t **jsonp);
/**
* Specification for parsing an amount value.
*
* @param name name of the JSON field
* @param amount where to store the amount under @a name
*/
struct BAJ_Specification
BAJ_spec_amount (const char *name,
struct TALER_Amount *amount);
/**
* Specification for parsing an RSA public key.
*
* @param name name of the JSON field
* @param pk where to store the RSA key found under @a name
*/
struct BAJ_Specification
BAJ_spec_rsa_public_key (const char *name,
struct GNUNET_CRYPTO_rsa_PublicKey **pk);
/**
* Specification for parsing an RSA signature.
*
* @param name name of the JSON field
* @param sig where to store the RSA signature found under @a name
*/
struct BAJ_Specification
BAJ_spec_rsa_signature (const char *name,
struct GNUNET_CRYPTO_rsa_Signature **sig);
/* end of mint_api_json.h */

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/*
This file is part of TALER
Copyright (C) 2015, 2016 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file include/taler_bank_service.h
* @brief C interface of libtalerbank, a C library to use the Taler bank's HTTP API
* @author Christian Grothoff
*/
#ifndef _TALER_BANK_SERVICE_H
#define _TALER_BANK_SERVICE_H
#include "taler_util.h"
/* ********************* event loop *********************** */
/**
* @brief Handle to this library context. This is where the
* main event loop logic lives.
*/
struct TALER_BANK_Context;
/**
* Initialise a context. A context should be used for each thread and should
* not be shared among multiple threads.
*
* @param url HTTP base URL for the bank
* @return the context, NULL on error (failure to initialize)
*/
struct TALER_BANK_Context *
TALER_BANK_init (const char *url);
/**
* Obtain the information for a select() call to wait until
* #TALER_BANK_perform() is ready again. Note that calling
* any other TALER_BANK-API may also imply that the library
* is again ready for #TALER_BANK_perform().
*
* Basically, a client should use this API to prepare for select(),
* then block on select(), then call #TALER_BANK_perform() and then
* start again until the work with the context is done.
*
* This function will NOT zero out the sets and assumes that @a max_fd
* and @a timeout are already set to minimal applicable values. It is
* safe to give this API FD-sets and @a max_fd and @a timeout that are
* already initialized to some other descriptors that need to go into
* the select() call.
*
* @param ctx context to get the event loop information for
* @param read_fd_set will be set for any pending read operations
* @param write_fd_set will be set for any pending write operations
* @param except_fd_set is here because curl_multi_fdset() has this argument
* @param max_fd set to the highest FD included in any set;
* if the existing sets have no FDs in it, the initial
* value should be "-1". (Note that `max_fd + 1` will need
* to be passed to select().)
* @param timeout set to the timeout in milliseconds (!); -1 means
* no timeout (NULL, blocking forever is OK), 0 means to
* proceed immediately with #TALER_BANK_perform().
*/
void
TALER_BANK_get_select_info (struct TALER_BANK_Context *ctx,
fd_set *read_fd_set,
fd_set *write_fd_set,
fd_set *except_fd_set,
int *max_fd,
long *timeout);
/**
* Run the main event loop for the Taler interaction.
*
* @param ctx the library context
*/
void
TALER_BANK_perform (struct TALER_BANK_Context *ctx);
/**
* Cleanup library initialisation resources. This function should be called
* after using this library to cleanup the resources occupied during library's
* initialisation.
*
* @param ctx the library context
*/
void
TALER_BANK_fini (struct TALER_BANK_Context *ctx);
/* ********************* /admin/add/incoming *********************** */
/**
* @brief A /admin/add/incoming Handle
*/
struct TALER_BANK_AdminAddIncomingHandle;
/**
* Callbacks of this type are used to serve the result of submitting
* information about an incoming transaction to a bank.
*
* @param cls closure
* @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request
* 0 if the bank's reply is bogus (fails to follow the protocol)
*/
typedef void
(*TALER_BANK_AdminAddIncomingResultCallback) (void *cls,
unsigned int http_status);
/**
* Notify the bank that we have received an incoming transaction
* which fills a reserve. Note that this API is an administrative
* API and thus not accessible to typical bank clients, but only
* to the operators of the bank.
*
* @param bank the bank handle; the bank must be ready to operate
* @param reserve_pub public key of the reserve
* @param amount amount that was deposited
* @param execution_date when did we receive the amount
* @param wire wire details
* @param res_cb the callback to call when the final result for this request is available
* @param res_cb_cls closure for the above callback
* @return NULL
* if the inputs are invalid (i.e. invalid amount).
* In this case, the callback is not called.
*/
struct TALER_BANK_AdminAddIncomingHandle *
TALER_BANK_admin_add_incoming (struct TALER_BANK_Context *bank,
const struct TALER_WireTransferIdentifierRawP *wtid,
const struct TALER_Amount *amount,
const json_t *wire,
TALER_BANK_AdminAddIncomingResultCallback res_cb,
void *res_cb_cls);
/**
* Cancel an add incoming. This function cannot be used on a request
* handle if a response is already served for it.
*
* @param aai the admin add incoming request handle
*/
void
TALER_BANK_admin_add_incoming_cancel (struct TALER_BANK_AdminAddIncomingHandle *aai);
#endif /* _TALER_BANK_SERVICE_H */