int SLNSubmissionStoreBatch(SLNSubmissionRef const *const list, size_t const count) {
if(!count) return 0;
// Session permissions were already checked when the sub was created.
SLNRepoRef const repo = SLNSessionGetRepo(list[0]->session);
DB_env *db = NULL;
SLNRepoDBOpen(repo, &db);
DB_txn *txn = NULL;
int rc = db_txn_begin(db, NULL, DB_RDWR, &txn);
if(rc < 0) {
SLNRepoDBClose(repo, &db);
return rc;
}
uint64_t sortID = 0;
rc = DB_NOTFOUND;
for(size_t i = 0; i < count; i++) {
if(!list[i]) continue;
assert(repo == SLNSessionGetRepo(list[i]->session));
rc = SLNSubmissionStore(list[i], txn);
if(rc < 0) break;
uint64_t const metaFileID = list[i]->metaFileID;
if(metaFileID > sortID) sortID = metaFileID;
}
if(rc >= 0) {
rc = db_txn_commit(txn); txn = NULL;
} else {
db_txn_abort(txn); txn = NULL;
}
SLNRepoDBClose(repo, &db);
if(rc >= 0) SLNRepoSubmissionEmit(repo, sortID);
return rc;
}
int SLNSessionGetFileInfo(SLNSessionRef const session, strarg_t const URI, SLNFileInfo *const info) {
if(!SLNSessionHasPermission(session, SLN_RDONLY)) return DB_EACCES;
if(!URI) return DB_EINVAL;
SLNRepoRef const repo = SLNSessionGetRepo(session);
DB_env *db = NULL;
SLNRepoDBOpen(repo, &db);
DB_txn *txn = NULL;
int rc = db_txn_begin(db, NULL, DB_RDONLY, &txn);
if(rc < 0) {
SLNRepoDBClose(repo, &db);
return rc;
}
DB_cursor *cursor;
rc = db_txn_cursor(txn, &cursor);
assert(!rc);
DB_range fileIDs[1];
SLNURIAndFileIDRange1(fileIDs, txn, URI);
DB_val URIAndFileID_key[1];
rc = db_cursor_firstr(cursor, fileIDs, URIAndFileID_key, NULL, +1);
DB_val file_val[1];
if(rc >= 0) {
strarg_t URI2;
uint64_t fileID;
SLNURIAndFileIDKeyUnpack(URIAndFileID_key, txn, &URI2, &fileID);
assert(0 == strcmp(URI, URI2));
if(info) {
DB_val fileID_key[1];
SLNFileByIDKeyPack(fileID_key, txn, fileID);
rc = db_get(txn, fileID_key, file_val);
}
}
if(rc < 0) {
db_txn_abort(txn); txn = NULL;
SLNRepoDBClose(repo, &db);
return rc;
}
if(info) {
strarg_t const internalHash = db_read_string(file_val, txn);
strarg_t const type = db_read_string(file_val, txn);
uint64_t const size = db_read_uint64(file_val);
info->hash = strdup(internalHash);
info->path = SLNRepoCopyInternalPath(repo, internalHash);
info->type = strdup(type);
info->size = size;
if(!info->hash || !info->path || !info->type) {
SLNFileInfoCleanup(info);
db_txn_abort(txn); txn = NULL;
SLNRepoDBClose(repo, &db);
return DB_ENOMEM;
}
}
db_txn_abort(txn); txn = NULL;
SLNRepoDBClose(repo, &db);
return 0;
}
int SLNSessionGetValueForField(SLNSessionRef const session, str_t value[], size_t const max, strarg_t const fileURI, strarg_t const field) {
if(!SLNSessionHasPermission(session, SLN_RDONLY)) return DB_EACCES;
if(!field) return DB_EINVAL;
if(max) value[0] = '\0';
int rc = 0;
DB_cursor *metafiles = NULL;
DB_cursor *values = NULL;
SLNRepoRef const repo = SLNSessionGetRepo(session);
DB_env *db = NULL;
SLNRepoDBOpen(repo, &db);
DB_txn *txn = NULL;
rc = db_txn_begin(db, NULL, DB_RDONLY, &txn);
if(rc < 0) goto done;
rc = db_cursor_open(txn, &metafiles);
if(rc < 0) goto done;
rc = db_cursor_open(txn, &values);
if(rc < 0) goto done;
DB_range metaFileIDs[1];
SLNTargetURIAndMetaFileIDRange1(metaFileIDs, txn, fileURI);
DB_val metaFileID_key[1];
rc = db_cursor_firstr(metafiles, metaFileIDs, metaFileID_key, NULL, +1);
if(rc < 0 && DB_NOTFOUND != rc) goto done;
for(; rc >= 0; rc = db_cursor_nextr(metafiles, metaFileIDs, metaFileID_key, NULL, +1)) {
strarg_t u;
uint64_t metaFileID;
SLNTargetURIAndMetaFileIDKeyUnpack(metaFileID_key, txn, &u, &metaFileID);
assert(0 == strcmp(fileURI, u));
DB_range vrange[1];
SLNMetaFileIDFieldAndValueRange2(vrange, txn, metaFileID, field);
DB_val value_val[1];
rc = db_cursor_firstr(values, vrange, value_val, NULL, +1);
if(rc < 0 && DB_NOTFOUND != rc) goto done;
for(; rc >= 0; rc = db_cursor_nextr(values, vrange, value_val, NULL, +1)) {
uint64_t m;
strarg_t f, v;
SLNMetaFileIDFieldAndValueKeyUnpack(value_val, txn, &m, &f, &v);
assert(metaFileID == m);
assert(0 == strcmp(field, f));
if(!v) continue;
if(0 == strcmp("", v)) continue;
size_t const len = strlen(v);
memcpy(value, v, MIN(len, max-1));
value[MIN(len, max-1)] = '\0';
goto done;
}
}
done:
db_cursor_close(values); values = NULL;
db_cursor_close(metafiles); metafiles = NULL;
db_txn_abort(txn); txn = NULL;
SLNRepoDBClose(repo, &db);
return rc;
}
ssize_t SLNFilterCopyURIs(SLNFilterRef const filter, SLNSessionRef const session, SLNFilterPosition *const pos, int const dir, bool const meta, str_t *URIs[], size_t const max) {
assert(URIs);
if(!SLNSessionHasPermission(session, SLN_RDONLY)) return DB_EACCES;
if(0 == pos->dir) return DB_EINVAL;
if(0 == dir) return DB_EINVAL;
if(0 == max) return 0;
DB_env *db = NULL;
DB_txn *txn = NULL;
ssize_t rc = 0;
SLNRepoRef const repo = SLNSessionGetRepo(session);
SLNRepoDBOpen(repo, &db);
rc = db_txn_begin(db, NULL, DB_RDONLY, &txn);
if(rc < 0) goto cleanup;
rc = SLNFilterPrepare(filter, txn);
if(rc < 0) goto cleanup;
rc = SLNFilterSeekToPosition(filter, pos, txn);
if(rc < 0) goto cleanup;
int const stepdir = pos->dir * dir;
size_t i = 0;
for(; i < max; i++) {
size_t const x = stepdir > 0 ? i : max-1-i;
rc = SLNFilterGetPosition(filter, pos, txn);
if(DB_NOTFOUND == rc) {
rc = 0;
break;
}
rc = SLNFilterCopyURI(filter, pos->fileID, meta, txn, &URIs[x]);
if(rc < 0) goto cleanup;
assert(URIs[x]);
SLNFilterStep(filter, pos->dir);
}
// The results should always be in the first `i` slots, even when
// filling them in reverse order.
if(stepdir < 0) {
memmove(URIs+0, URIs+(max-i), sizeof(*URIs) * i);
}
assert(rc >= 0);
rc = i;
cleanup:
db_txn_abort(txn); txn = NULL;
SLNRepoDBClose(repo, &db);
return rc;
}
void SLNSessionDBClose(SLNSessionRef const session, DB_env **const dbptr) {
assert(session);
SLNRepoDBClose(SLNSessionGetRepo(session), dbptr);
}