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22 * @file fs/fs_publish_ksk.c
23 * @brief publish a URI under a keyword in GNUnet
24 * @see https://gnunet.org/encoding and #2564
25 * @author Krista Bennett
26 * @author Christian Grothoff
30 #include "gnunet_constants.h"
31 #include "gnunet_signatures.h"
32 #include "gnunet_util_lib.h"
33 #include "gnunet_fs_service.h"
36 #include "fs_publish_ublock.h"
39 * Context for the KSK publication.
41 struct GNUNET_FS_PublishKskContext
47 struct GNUNET_FS_Uri *ksk_uri;
52 struct GNUNET_FS_Uri *uri;
57 struct GNUNET_CONTAINER_MetaData *meta;
62 struct GNUNET_FS_Handle *h;
65 * UBlock publishing operation that is active.
67 struct GNUNET_FS_PublishUblockContext *uc;
70 * Handle to the datastore, NULL if we are just simulating.
72 struct GNUNET_DATASTORE_Handle *dsh;
77 struct GNUNET_SCHEDULER_Task * ksk_task;
80 * Function to call once we're done.
82 GNUNET_FS_PublishContinuation cont;
90 * When should the KBlocks expire?
92 struct GNUNET_FS_BlockOptions bo;
97 enum GNUNET_FS_PublishOptions options;
100 * Keyword that we are currently processing.
108 * Continuation of #GNUNET_FS_publish_ksk() that performs
109 * the actual publishing operation (iterating over all
112 * @param cls closure of type `struct PublishKskContext *`
115 publish_ksk_cont (void *cls);
119 * Function called by the datastore API with
120 * the result from the PUT request.
122 * @param cls closure of type `struct GNUNET_FS_PublishKskContext *`
123 * @param msg error message (or NULL)
126 kb_put_cont (void *cls,
129 struct GNUNET_FS_PublishKskContext *pkc = cls;
134 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
135 "KBlock PUT operation failed: %s\n", msg);
136 pkc->cont (pkc->cont_cls, NULL, msg);
137 GNUNET_FS_publish_ksk_cancel (pkc);
140 pkc->ksk_task = GNUNET_SCHEDULER_add_now (&publish_ksk_cont, pkc);
145 * Continuation of #GNUNET_FS_publish_ksk() that performs the actual
146 * publishing operation (iterating over all of the keywords).
148 * @param cls closure of type `struct GNUNET_FS_PublishKskContext *`
151 publish_ksk_cont (void *cls)
153 struct GNUNET_FS_PublishKskContext *pkc = cls;
156 pkc->ksk_task = NULL;
157 if ( (pkc->i == pkc->ksk_uri->data.ksk.keywordCount) ||
160 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
161 "KSK PUT operation complete\n");
162 pkc->cont (pkc->cont_cls, pkc->ksk_uri,
164 GNUNET_FS_publish_ksk_cancel (pkc);
167 keyword = pkc->ksk_uri->data.ksk.keywords[pkc->i++];
168 pkc->uc = GNUNET_FS_publish_ublock_ (pkc->h,
170 keyword + 1 /* skip '+' */,
172 GNUNET_CRYPTO_ecdsa_key_get_anonymous (),
182 * Publish a CHK under various keywords on GNUnet.
184 * @param h handle to the file sharing subsystem
185 * @param ksk_uri keywords to use
186 * @param meta metadata to use
187 * @param uri URI to refer to in the KBlock
188 * @param bo per-block options
189 * @param options publication options
190 * @param cont continuation
191 * @param cont_cls closure for cont
192 * @return NULL on error ('cont' will still be called)
194 struct GNUNET_FS_PublishKskContext *
195 GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
196 const struct GNUNET_FS_Uri *ksk_uri,
197 const struct GNUNET_CONTAINER_MetaData *meta,
198 const struct GNUNET_FS_Uri *uri,
199 const struct GNUNET_FS_BlockOptions *bo,
200 enum GNUNET_FS_PublishOptions options,
201 GNUNET_FS_PublishContinuation cont, void *cont_cls)
203 struct GNUNET_FS_PublishKskContext *pkc;
205 GNUNET_assert (NULL != uri);
206 pkc = GNUNET_new (struct GNUNET_FS_PublishKskContext);
209 pkc->options = options;
211 pkc->cont_cls = cont_cls;
212 pkc->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
213 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
215 pkc->dsh = GNUNET_DATASTORE_connect (h->cfg);
216 if (NULL == pkc->dsh)
220 _("Could not connect to datastore."));
225 pkc->uri = GNUNET_FS_uri_dup (uri);
226 pkc->ksk_uri = GNUNET_FS_uri_dup (ksk_uri);
227 pkc->ksk_task = GNUNET_SCHEDULER_add_now (&publish_ksk_cont, pkc);
233 * Abort the KSK publishing operation.
235 * @param pkc context of the operation to abort.
238 GNUNET_FS_publish_ksk_cancel (struct GNUNET_FS_PublishKskContext *pkc)
240 if (NULL != pkc->ksk_task)
242 GNUNET_SCHEDULER_cancel (pkc->ksk_task);
243 pkc->ksk_task = NULL;
247 GNUNET_FS_publish_ublock_cancel_ (pkc->uc);
250 if (NULL != pkc->dsh)
252 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
255 GNUNET_CONTAINER_meta_data_destroy (pkc->meta);
256 GNUNET_FS_uri_destroy (pkc->ksk_uri);
257 GNUNET_FS_uri_destroy (pkc->uri);
262 /* end of fs_publish_ksk.c */