void BlogFree(BlogRef *const blogptr) {
BlogRef blog = *blogptr;
if(!blog) return;
blog->repo = NULL;
FREE(&blog->dir);
FREE(&blog->cacheDir);
TemplateFree(&blog->header);
TemplateFree(&blog->footer);
TemplateFree(&blog->entry_start);
TemplateFree(&blog->entry_end);
TemplateFree(&blog->preview);
TemplateFree(&blog->empty);
TemplateFree(&blog->compose);
TemplateFree(&blog->upload);
TemplateFree(&blog->login);
TemplateFree(&blog->notfound);
TemplateFree(&blog->noresults);
async_mutex_destroy(blog->pending_mutex);
async_cond_destroy(blog->pending_cond);
assert_zeroed(blog, 1);
FREE(blogptr); blog = NULL;
}
void SLNSubmissionFree(SLNSubmissionRef *const subptr) {
SLNSubmissionRef sub = *subptr;
if(!sub) return;
sub->session = NULL;
FREE(&sub->knownURI);
FREE(&sub->type);
if(sub->tmppath) async_fs_unlink(sub->tmppath);
FREE(&sub->tmppath);
if(sub->tmpfile >= 0) async_fs_close(sub->tmpfile);
sub->tmpfile = 0;
sub->size = 0;
SLNHasherFree(&sub->hasher);
sub->metaFileID = 0;
if(sub->URIs) for(size_t i = 0; sub->URIs[i]; ++i) FREE(&sub->URIs[i]);
FREE(&sub->URIs);
FREE(&sub->primaryURI);
FREE(&sub->internalHash);
assert_zeroed(sub, 1);
FREE(subptr); sub = NULL;
}
void SLNFilterPositionCleanup(SLNFilterPosition *const pos) {
assert(pos);
pos->dir = 0;
FREE(&pos->URI);
pos->sortID = 0;
pos->fileID = 0;
assert_zeroed(pos, 1);
}
void SLNFileInfoCleanup(SLNFileInfo *const info) {
if(!info) return;
FREE(&info->hash);
FREE(&info->path);
FREE(&info->type);
info->size = 0;
assert_zeroed(info, 1);
}
void HTTPServerFree(HTTPServerRef *const serverptr) {
HTTPServerRef server = *serverptr;
if(!server) return;
HTTPServerClose(server);
server->listener = NULL;
server->context = NULL;
assert_zeroed(server, 1);
FREE(serverptr); server = NULL;
}
void MultipartFormFree(MultipartFormRef *const formptr) {
MultipartFormRef form = *formptr;
if(!form) return;
form->conn = NULL;
multipart_parser_free(form->parser); form->parser = NULL;
form->type = MultipartNothing;
*form->out = uv_buf_init(NULL, 0);
form->flags = 0;
assert_zeroed(form, 1);
FREE(formptr); form = NULL;
}
void HTTPHeadersFree(HTTPHeadersRef *const hptr) {
HTTPHeadersRef h = *hptr;
if(!h) return;
FREE(&h->fields);
for(uint16_t i = 0; i < h->count; i++) FREE(&h->values[i]);
h->count = 0;
h->offset = 0;
h->total = 0;
assert_zeroed(h, 1);
FREE(hptr); h = NULL;
}
void SLNJSONFilterParserFree(SLNJSONFilterParserRef *const parserptr) {
SLNJSONFilterParserRef parser = *parserptr;
if(!parser) return;
parser->session = NULL;
if(parser->JSONParser) {
yajl_free(parser->JSONParser); parser->JSONParser = NULL;
}
for(size_t i = 0; i < DEPTH_MAX; ++i) {
SLNFilterFree(&parser->stack[i]);
}
assert_zeroed(parser, 1);
FREE(parserptr); parser = NULL;
}
void SocketFree(SocketRef *const socketptr) {
SocketRef socket = *socketptr;
if(!socket) return;
if(socket->secure) tls_close(socket->secure);
tls_free(socket->secure); socket->secure = NULL;
async_close((uv_handle_t *)socket->stream);
FREE(&socket->rdmem);
socket->rd->base = NULL; socket->rd->len = 0;
FREE(&socket->wr->base); socket->wr->len = 0;
socket->err = 0;
assert_zeroed(socket, 1);
FREE(socketptr); socket = NULL;
}
void kvs_helper_txn_abort(KVS_helper_txn *const helper) {
if(!helper) return;
if(helper->child) {
kvs_txn_abort(helper->child); helper->child = NULL;
}
kvs_cursor_close(helper->cursor); helper->cursor = NULL;
if(helper->parent) {
kvs_txn_set_config(helper->parent, KVS_TXN_CHILD, NULL);
}
helper->env = NULL;
helper->parent = NULL;
helper->flags = 0;
assert_zeroed(helper, 1);
}
void SLNSessionRelease(SLNSessionRef *const sessionptr) {
SLNSessionRef session = *sessionptr;
if(!session) return;
assert(session->refcount);
if(--session->refcount) return;
session->cache = NULL;
session->sessionID = 0;
FREE(&session->sessionKeyRaw);
FREE(&session->sessionKeyEnc);
session->userID = 0;
session->mode = 0;
FREE(&session->username);
assert_zeroed(session, 1);
FREE(sessionptr); session = NULL;
}
ssize_t SLNFilterWriteURIBatch(SLNFilterRef const filter, SLNSessionRef const session, SLNFilterPosition *const pos, bool const meta, uint64_t const max, SLNFilterWriteCB const writecb, void *ctx) {
str_t *URIs[BATCH_SIZE];
ssize_t const count = SLNFilterCopyURIs(filter, session, pos, pos->dir, meta, URIs, MIN(max, BATCH_SIZE));
if(count <= 0) return count;
uv_buf_t parts[BATCH_SIZE*2];
for(size_t i = 0; i < count; i++) {
parts[i*2+0] = uv_buf_init((char *)URIs[i], strlen(URIs[i]));
parts[i*2+1] = uv_buf_init((char *)STR_LEN("\r\n"));
}
int rc = writecb(ctx, parts, count*2);
for(size_t i = 0; i < count; i++) FREE(&URIs[i]);
assert_zeroed(URIs, count);
if(rc < 0) return rc;
return count;
}
void EFSSyncFree(EFSSyncRef *const syncptr) {
assert(syncptr);
EFSSyncRef sync = *syncptr;
if(!sync) return;
sync->stop = true;
// TODO: Join db_thread
sync->session = NULL;
FREE(&sync->syncID);
async_mutex_destroy(sync->mutex);
async_cond_destroy(sync->cond);
sync->cur = NULL;
// TODO: Clear queues
assert_zeroed(sync, 1);
FREE(syncptr); sync = NULL;
}
void SLNPullFree(SLNPullRef *const pullptr) {
SLNPullRef pull = *pullptr;
if(!pull) return;
SLNPullStop(pull);
pull->pullID = 0;
SLNSessionRelease(&pull->session);
FREE(&pull->host);
FREE(&pull->cookie);
// FREE(&pull->query);
async_mutex_destroy(pull->connlock);
async_mutex_destroy(pull->mutex);
async_cond_destroy(pull->cond);
pull->stop = false;
assert_zeroed(pull, 1);
FREE(pullptr); pull = NULL;
}
int SLNSubmissionParseMetaFile(SLNSubmissionRef const sub, uint64_t const fileID, DB_txn *const txn, uint64_t *const out) {
assert(out);
if(!sub) return DB_EINVAL;
if(!fileID) return DB_EINVAL;
if(!txn) return DB_EINVAL;
strarg_t const type = SLNSubmissionGetType(sub);
if(!type) return 0;
if(0 != strcasecmp(SLN_META_TYPE, type) &&
0 != strcasecmp("text/x-sln-meta+json; charset=utf-8", type) &&
0 != strcasecmp("text/efs-meta+json; charset=utf-8", type)) return 0;
// TODO: Get rid of these obsolete types.
uv_file const fd = SLNSubmissionGetFile(sub);
if(fd < 0) return DB_EINVAL;
int rc = 0;
uv_buf_t buf[1] = {};
DB_txn *subtxn = NULL;
parser_t ctx[1] = {};
yajl_handle parser = NULL;
buf->base = malloc(BUF_LEN);
if(!buf->base) { rc = DB_ENOMEM; goto cleanup; }
buf->len = URI_MAX;
int64_t pos = 0;
ssize_t len = async_fs_read(fd, buf, 1, pos);
if(len < 0) {
fprintf(stderr, "Submission meta-file read error (%s)\n", sln_strerror(len));
rc = DB_EIO;
goto cleanup;
}
size_t i;
for(i = 0; i < len; i++) {
char const c = buf->base[i];
if('\r' == c || '\n' == c) break;
}
if(i >= len) {
fprintf(stderr, "Submission meta-file parse error (invalid target URI)\n");
rc = DB_EIO;
goto cleanup;
}
assert(i < len);
str_t targetURI[URI_MAX];
memcpy(targetURI, buf->base, i);
targetURI[i] = '\0';
pos += i;
// TODO: Support sub-transactions in LevelDB backend.
// TODO: db_txn_begin should support NULL env.
// rc = db_txn_begin(NULL, txn, DB_RDWR, &subtxn);
// if(rc < 0) goto cleanup;
subtxn = txn;
uint64_t const metaFileID = add_metafile(subtxn, fileID, targetURI);
if(!metaFileID) goto cleanup;
// Duplicate meta-file, not an error.
// TODO: Unless the previous version wasn't actually a meta-file.
ctx->txn = subtxn;
ctx->metaFileID = metaFileID;
ctx->targetURI = targetURI;
ctx->depth = -1;
parser = yajl_alloc(&callbacks, NULL, ctx);
if(!parser) rc = DB_ENOMEM;
if(rc < 0) goto cleanup;
yajl_config(parser, yajl_allow_partial_values, (int)true);
yajl_status status = yajl_status_ok;
for(;;) {
buf->len = MIN(BUF_LEN, PARSE_MAX-pos);
if(!buf->len) break;
len = async_fs_read(fd, buf, 1, pos);
if(len < 0) {
fprintf(stderr, "Submission meta-file read error (%s)\n", sln_strerror(len));
rc = DB_EIO;
goto cleanup;
}
if(0 == len) break;
status = yajl_parse(parser, (byte_t const *)buf->base, len);
if(yajl_status_ok != status) break;
pos += len;
}
status = yajl_complete_parse(parser);
if(yajl_status_ok != status) {
unsigned char *msg = yajl_get_error(parser, true, (byte_t const *)buf->base, len);
fprintf(stderr, "%s", msg);
yajl_free_error(parser, msg); msg = NULL;
rc = DB_EIO;
goto cleanup;
}
assert(-1 == ctx->depth);
// rc = db_txn_commit(subtxn); subtxn = NULL;
if(rc < 0) goto cleanup;
*out = metaFileID;
cleanup:
// db_txn_abort(subtxn); subtxn = NULL;
FREE(&buf->base);
if(parser) yajl_free(parser); parser = NULL;
assert_zeroed(ctx->fields, DEPTH_MAX);
return rc;
}
int HTTPConnectionCreateOutgoing(strarg_t const domain, unsigned const flags, HTTPConnectionRef *const out) {
str_t host[1023+1];
str_t service[15+1];
host[0] = '\0';
service[0] = '\0';
int matched = sscanf(domain, "%1023[^:]:%15[0-9]", host, service);
if(matched < 1) return UV_EINVAL;
if('\0' == host[0]) return UV_EINVAL;
static struct addrinfo const hints = {
.ai_flags = AI_V4MAPPED | AI_ADDRCONFIG | AI_NUMERICSERV,
.ai_family = AF_UNSPEC,
.ai_socktype = SOCK_STREAM,
.ai_protocol = 0, // ???
};
struct addrinfo *info = NULL;
HTTPConnectionRef conn = NULL;
int rc;
rc = async_getaddrinfo(host, service[0] ? service : "80", &hints, &info);
if(rc < 0) goto cleanup;
conn = calloc(1, sizeof(struct HTTPConnection));
if(!conn) rc = UV_ENOMEM;
if(rc < 0) goto cleanup;
rc = UV_EADDRNOTAVAIL;
for(struct addrinfo *each = info; each; each = each->ai_next) {
rc = uv_tcp_init(async_loop, conn->stream);
if(rc < 0) break;
rc = async_tcp_connect(conn->stream, each->ai_addr);
if(rc >= 0) break;
async_close((uv_handle_t *)conn->stream);
}
if(rc < 0) goto cleanup;
http_parser_init(conn->parser, HTTP_RESPONSE);
conn->parser->data = conn;
*out = conn; conn = NULL;
cleanup:
uv_freeaddrinfo(info); info = NULL;
HTTPConnectionFree(&conn);
return rc;
}
void HTTPConnectionFree(HTTPConnectionRef *const connptr) {
HTTPConnectionRef conn = *connptr;
if(!conn) return;
async_close((uv_handle_t *)conn->stream);
// http_parser does not need to be freed, closed or destroyed.
memset(conn->parser, 0, sizeof(*conn->parser));
FREE(&conn->buf);
*conn->raw = uv_buf_init(NULL, 0);
conn->type = HTTPNothing;
*conn->out = uv_buf_init(NULL, 0);
conn->flags = 0;
assert_zeroed(conn, 1);
FREE(connptr); conn = NULL;
}
static int GET_query(BlogRef const blog, SLNSessionRef const session, HTTPConnectionRef const conn, HTTPMethod const method, strarg_t const URI, HTTPHeadersRef const headers) {
if(HTTP_GET != method && HTTP_HEAD != method) return -1;
strarg_t qs = NULL;
if(0 != uripathcmp("/", URI, &qs)) return -1;
if(HTTP_HEAD == method) return 501; // TODO
// TODO: This is the most complicated function in the whole program.
// It's unbearable.
str_t *query = NULL;
str_t *query_HTMLSafe = NULL;
str_t *parsed_HTMLSafe = NULL;
SLNFilterRef filter = NULL;
int rc;
static strarg_t const fields[] = {
"q",
};
str_t *values[numberof(fields)] = {};
QSValuesParse(qs, values, fields, numberof(fields));
query = values[0]; values[0] = NULL;
query_HTMLSafe = htmlenc(values[0]);
rc = SLNUserFilterParse(session, query, &filter);
QSValuesCleanup(values, numberof(values));
if(DB_EACCES == rc) {
FREE(&query);
FREE(&query_HTMLSafe);
return 403;
}
// SLNFilterPrintSexp(filter, stderr, 0); // DEBUG
if(DB_EINVAL == rc) rc = SLNFilterCreate(session, SLNVisibleFilterType, &filter);
if(rc < 0) {
FREE(&query);
FREE(&query_HTMLSafe);
return 500;
}
str_t tmp[URI_MAX]; tmp[0] = '\0'; // fmemopen shim ignores mode.
FILE *parsed = fmemopen(tmp, sizeof(tmp), "w");
if(!parsed) {
FREE(&query);
FREE(&query_HTMLSafe);
return 500;
}
SLNFilterPrintUser(filter, parsed, 0);
fclose(parsed);
tmp[sizeof(tmp)-1] = '\0'; // fmemopen(3) says this isn't guaranteed.
parsed_HTMLSafe = htmlenc(tmp);
SLNFilterPosition pos[1] = {{ .dir = -1 }};
str_t *URIs[RESULTS_MAX];
uint64_t max = numberof(URIs);
int outdir = -1;
SLNFilterParseOptions(qs, pos, &max, &outdir, NULL);
if(max < 1) max = 1;
if(max > numberof(URIs)) max = numberof(URIs);
bool const has_start = !!pos->URI;
uint64_t const t1 = uv_hrtime();
ssize_t const count = SLNFilterCopyURIs(filter, session, pos, outdir, false, URIs, (size_t)max);
SLNFilterPositionCleanup(pos);
if(count < 0) {
FREE(&query);
FREE(&query_HTMLSafe);
FREE(&parsed_HTMLSafe);
SLNFilterFree(&filter);
if(DB_NOTFOUND == count) {
// Possibly a filter age-function bug.
alogf("Invalid start parameter? %s\n", URI);
return 500;
}
alogf("Filter error: %s\n", sln_strerror(count));
return 500;
}
SLNFilterFree(&filter);
uint64_t const t2 = uv_hrtime();
str_t *reponame_HTMLSafe = htmlenc(SLNRepoGetName(blog->repo));
snprintf(tmp, sizeof(tmp), "Queried in %.6f seconds", (t2-t1) / 1e9);
str_t *querytime_HTMLSafe = htmlenc(tmp);
str_t *account_HTMLSafe;
if(0 == SLNSessionGetUserID(session)) {
account_HTMLSafe = htmlenc("Log In");
} else {
strarg_t const user = SLNSessionGetUsername(session);
snprintf(tmp, sizeof(tmp), "Account: %s", user);
account_HTMLSafe = htmlenc(tmp);
}
// TODO: Write a real function for building query strings
// Don't use ?: GNUism
// Preserve other query parameters like `dir`
str_t *query_encoded = !query ? NULL : QSEscape(query, strlen(query), true);
FREE(&query);
str_t *firstpage_HTMLSafe = NULL;
str_t *prevpage_HTMLSafe = NULL;
str_t *nextpage_HTMLSafe = NULL;
str_t *lastpage_HTMLSafe = NULL;
snprintf(tmp, sizeof(tmp), "?q=%s&start=-", query_encoded ?: "");
firstpage_HTMLSafe = htmlenc(tmp);
str_t *p = !count ? NULL : URIs[outdir > 0 ? 0 : count-1];
str_t *n = !count ? NULL : URIs[outdir > 0 ? count-1 : 0];
if(p) p = QSEscape(p, strlen(p), 1);
if(n) n = QSEscape(n, strlen(n), 1);
snprintf(tmp, sizeof(tmp), "?q=%s&start=%s", query_encoded ?: "", p ?: "");
prevpage_HTMLSafe = htmlenc(tmp);
snprintf(tmp, sizeof(tmp), "?q=%s&start=-%s", query_encoded ?: "", n ?: "");
nextpage_HTMLSafe = htmlenc(tmp);
snprintf(tmp, sizeof(tmp), "?q=%s", query_encoded ?: "");
lastpage_HTMLSafe = htmlenc(tmp);
FREE(&query_encoded);
FREE(&p);
FREE(&n);
str_t *qs_HTMLSafe = htmlenc(qs);
TemplateStaticArg const args[] = {
{"reponame", reponame_HTMLSafe},
{"querytime", querytime_HTMLSafe},
{"account", account_HTMLSafe},
{"query", query_HTMLSafe},
{"parsed", parsed_HTMLSafe},
{"firstpage", firstpage_HTMLSafe},
{"prevpage", prevpage_HTMLSafe},
{"nextpage", nextpage_HTMLSafe},
{"lastpage", lastpage_HTMLSafe},
{"qs", qs_HTMLSafe},
{NULL, NULL},
};
if(count > 0) {
HTTPConnectionWriteResponse(conn, 200, "OK");
} else {
HTTPConnectionWriteResponse(conn, 404, "Not Found");
}
HTTPConnectionWriteHeader(conn, "Content-Type", "text/html; charset=utf-8");
HTTPConnectionWriteHeader(conn, "Transfer-Encoding", "chunked");
if(0 == SLNSessionGetUserID(session)) {
HTTPConnectionWriteHeader(conn, "Cache-Control", "no-cache, public");
} else {
HTTPConnectionWriteHeader(conn, "Cache-Control", "no-cache, private");
}
HTTPConnectionBeginBody(conn);
TemplateWriteHTTPChunk(blog->header, &TemplateStaticCBs, args, conn);
if(0 == count) {
TemplateWriteHTTPChunk(blog->noresults, &TemplateStaticCBs, args, conn);
}
for(size_t i = 0; i < count; i++) {
str_t algo[SLN_ALGO_SIZE]; // SLN_INTERNAL_ALGO
str_t hash[SLN_HASH_SIZE];
SLNParseURI(URIs[i], algo, hash);
str_t *previewPath = BlogCopyPreviewPath(blog, hash);
rc = send_preview(blog, conn, session, URIs[i], previewPath);
FREE(&previewPath);
if(rc < 0) break;
}
// TODO: HACK
// Hide the pagination buttons when there are less than one full page of results.
if(count >= max || has_start) {
TemplateWriteHTTPChunk(blog->footer, &TemplateStaticCBs, args, conn);
}
FREE(&reponame_HTMLSafe);
FREE(&querytime_HTMLSafe);
FREE(&account_HTMLSafe);
FREE(&query_HTMLSafe);
FREE(&parsed_HTMLSafe);
FREE(&firstpage_HTMLSafe);
FREE(&prevpage_HTMLSafe);
FREE(&nextpage_HTMLSafe);
FREE(&lastpage_HTMLSafe);
FREE(&qs_HTMLSafe);
HTTPConnectionWriteChunkEnd(conn);
HTTPConnectionEnd(conn);
for(size_t i = 0; i < count; i++) FREE(&URIs[i]);
assert_zeroed(URIs, count);
return 0;
}
static void writer(SLNPullRef const pull) {
SLNSubmissionRef queue[QUEUE_SIZE];
size_t count = 0;
size_t skipped = 0;
double time = uv_now(async_loop) / 1000.0;
for(;;) {
if(pull->stop) goto stop;
async_mutex_lock(pull->mutex);
while(0 == count || (count < QUEUE_SIZE && pull->count > 0)) {
size_t const pos = pull->cur;
while(!pull->filled[pos]) {
async_cond_wait(pull->cond, pull->mutex);
if(pull->stop) {
async_mutex_unlock(pull->mutex);
goto stop;
}
if(!count) time = uv_now(async_loop) / 1000.0;
}
assert(pull->filled[pos]);
// Skip any bubbles in the queue.
if(pull->queue[pos]) queue[count++] = pull->queue[pos];
else skipped++;
pull->queue[pos] = NULL;
pull->filled[pos] = false;
pull->cur = (pull->cur + 1) % QUEUE_SIZE;
pull->count--;
async_cond_broadcast(pull->cond);
}
async_mutex_unlock(pull->mutex);
assert(count <= QUEUE_SIZE);
for(;;) {
int rc = SLNSubmissionStoreBatch(queue, count);
if(rc >= 0) break;
alogf("Submission error: %s (%d)\n", sln_strerror(rc), rc);
async_sleep(1000 * 5);
}
for(size_t i = 0; i < count; ++i) {
SLNSubmissionFree(&queue[i]);
}
double const now = uv_now(async_loop) / 1000.0;
alogf("Pulled %f files per second\n", count / (now - time));
time = now;
count = 0;
skipped = 0;
}
stop:
for(size_t i = 0; i < count; ++i) {
SLNSubmissionFree(&queue[i]);
}
assert_zeroed(queue, count);
async_mutex_lock(pull->mutex);
assertf(pull->stop, "Writer ended early");
assert(pull->tasks > 0);
pull->tasks--;
async_cond_broadcast(pull->cond);
async_mutex_unlock(pull->mutex);
}
static int GET_query(BlogRef const blog, SLNSessionRef const session, HTTPConnectionRef const conn, HTTPMethod const method, strarg_t const URI, HTTPHeadersRef const headers) {
if(HTTP_GET != method) return -1;
strarg_t qs = NULL;
if(!URIPath(URI, "/", &qs)) return -1;
// TODO: This is the most complicated function in the whole program.
// It's unbearable.
str_t *query = NULL;
str_t *query_HTMLSafe = NULL;
SLNFilterRef filter = NULL;
int rc;
static strarg_t const fields[] = {
"q",
};
str_t *values[numberof(fields)] = {};
QSValuesParse(qs, values, fields, numberof(fields));
query = values[0] ? strdup(values[0]) : NULL;
query_HTMLSafe = htmlenc(values[0]);
rc = SLNUserFilterParse(session, values[0], &filter);
QSValuesCleanup(values, numberof(values));
if(DB_EACCES == rc) {
FREE(&query);
FREE(&query_HTMLSafe);
return 403;
}
if(DB_EINVAL == rc) rc = SLNFilterCreate(session, SLNVisibleFilterType, &filter);
if(rc < 0) {
FREE(&query);
FREE(&query_HTMLSafe);
return 500;
}
str_t tmp[URI_MAX];
SLNFilterToUserFilterString(filter, tmp, sizeof(tmp), 0);
str_t *parsed_HTMLSafe = htmlenc(tmp);
str_t *primaryURI = NULL;
SLNFilterRef core = SLNFilterUnwrap(filter);
SLNFilterType const filtertype = SLNFilterGetType(core);
if(SLNURIFilterType == filtertype) {
primaryURI = strdup(SLNFilterGetStringArg(core, 0));
assert(primaryURI); // TODO
SLNFilterRef alt;
rc = SLNFilterCreate(session, SLNLinksToFilterType, &alt);
assert(rc >= 0); // TODO
SLNFilterAddStringArg(alt, primaryURI, -1);
SLNFilterFree(&filter);
filter = alt; alt = NULL;
}
core = NULL;
// SLNFilterPrint(filter, 0); // DEBUG
SLNFilterPosition pos[1] = {{ .dir = -1 }};
uint64_t max = RESULTS_MAX;
int outdir = -1;
SLNFilterParseOptions(qs, pos, &max, &outdir, NULL);
if(max < 1) max = 1;
if(max > RESULTS_MAX) max = RESULTS_MAX;
uint64_t const t1 = uv_hrtime();
str_t *URIs[RESULTS_MAX];
ssize_t const count = SLNFilterCopyURIs(filter, session, pos, outdir, false, URIs, (size_t)max);
SLNFilterPositionCleanup(pos);
if(count < 0) {
fprintf(stderr, "Filter error: %s\n", sln_strerror(count));
FREE(&query);
FREE(&query_HTMLSafe);
SLNFilterFree(&filter);
return 500;
}
SLNFilterFree(&filter);
uint64_t const t2 = uv_hrtime();
str_t *reponame_HTMLSafe = htmlenc(SLNRepoGetName(blog->repo));
snprintf(tmp, sizeof(tmp), "Queried in %.3f seconds", (t2-t1) / 1e9);
str_t *querytime_HTMLSafe = htmlenc(tmp);
str_t *account_HTMLSafe;
if(0 == SLNSessionGetUserID(session)) {
account_HTMLSafe = htmlenc("Log In");
} else {
strarg_t const user = SLNSessionGetUsername(session);
snprintf(tmp, sizeof(tmp), "Account: %s", user);
account_HTMLSafe = htmlenc(tmp);
}
// TODO: Write a real function for building query strings
// Don't use ?: GNUism
// Preserve other query parameters like `dir`
str_t *query_encoded = !query ? NULL : QSEscape(query, strlen(query), true);
FREE(&query);
str_t *firstpage_HTMLSafe = NULL;
str_t *prevpage_HTMLSafe = NULL;
str_t *nextpage_HTMLSafe = NULL;
str_t *lastpage_HTMLSafe = NULL;
snprintf(tmp, sizeof(tmp), "?q=%s&start=-", query_encoded ?: "");
firstpage_HTMLSafe = htmlenc(tmp);
str_t *p = !count ? NULL : URIs[outdir > 0 ? 0 : count-1];
str_t *n = !count ? NULL : URIs[outdir > 0 ? count-1 : 0];
if(p) p = QSEscape(p, strlen(p), 1);
if(n) n = QSEscape(n, strlen(n), 1);
snprintf(tmp, sizeof(tmp), "?q=%s&start=%s", query_encoded ?: "", p ?: "");
prevpage_HTMLSafe = htmlenc(tmp);
snprintf(tmp, sizeof(tmp), "?q=%s&start=-%s", query_encoded ?: "", n ?: "");
nextpage_HTMLSafe = htmlenc(tmp);
snprintf(tmp, sizeof(tmp), "?q=%s", query_encoded ?: "");
lastpage_HTMLSafe = htmlenc(tmp);
FREE(&query_encoded);
FREE(&p);
FREE(&n);
TemplateStaticArg const args[] = {
{"reponame", reponame_HTMLSafe},
{"querytime", querytime_HTMLSafe},
{"account", account_HTMLSafe},
{"query", query_HTMLSafe},
{"parsed", parsed_HTMLSafe},
{"firstpage", firstpage_HTMLSafe},
{"prevpage", prevpage_HTMLSafe},
{"nextpage", nextpage_HTMLSafe},
{"lastpage", lastpage_HTMLSafe},
{NULL, NULL},
};
HTTPConnectionWriteResponse(conn, 200, "OK");
HTTPConnectionWriteHeader(conn, "Content-Type", "text/html; charset=utf-8");
HTTPConnectionWriteHeader(conn, "Transfer-Encoding", "chunked");
if(0 == SLNSessionGetUserID(session)) {
HTTPConnectionWriteHeader(conn, "Cache-Control", "no-cache, public");
} else {
HTTPConnectionWriteHeader(conn, "Cache-Control", "no-cache, private");
}
HTTPConnectionBeginBody(conn);
TemplateWriteHTTPChunk(blog->header, &TemplateStaticCBs, args, conn);
if(primaryURI) {
SLNFileInfo info[1];
rc = SLNSessionGetFileInfo(session, primaryURI, info);
if(rc >= 0) {
str_t *preferredURI = SLNFormatURI(SLN_INTERNAL_ALGO, info->hash);
str_t *previewPath = BlogCopyPreviewPath(blog, info->hash);
send_preview(blog, conn, session, preferredURI, previewPath);
FREE(&preferredURI);
FREE(&previewPath);
SLNFileInfoCleanup(info);
} else if(DB_NOTFOUND == rc) {
TemplateWriteHTTPChunk(blog->notfound, &TemplateStaticCBs, args, conn);
}
if(count) {
TemplateWriteHTTPChunk(blog->backlinks, &TemplateStaticCBs, args, conn);
}
}
bool const broadest_possible_filter =
SLNVisibleFilterType == filtertype ||
SLNAllFilterType == filtertype;
if(0 == count && !primaryURI && !broadest_possible_filter) {
TemplateWriteHTTPChunk(blog->noresults, &TemplateStaticCBs, args, conn);
}
for(size_t i = 0; i < count; i++) {
str_t algo[SLN_ALGO_SIZE]; // SLN_INTERNAL_ALGO
str_t hash[SLN_HASH_SIZE];
SLNParseURI(URIs[i], algo, hash);
str_t *previewPath = BlogCopyPreviewPath(blog, hash);
rc = send_preview(blog, conn, session, URIs[i], previewPath);
FREE(&previewPath);
if(rc < 0) break;
}
FREE(&primaryURI);
TemplateWriteHTTPChunk(blog->footer, &TemplateStaticCBs, args, conn);
FREE(&reponame_HTMLSafe);
FREE(&querytime_HTMLSafe);
FREE(&account_HTMLSafe);
FREE(&query_HTMLSafe);
FREE(&parsed_HTMLSafe);
FREE(&firstpage_HTMLSafe);
FREE(&prevpage_HTMLSafe);
FREE(&nextpage_HTMLSafe);
FREE(&lastpage_HTMLSafe);
HTTPConnectionWriteChunkEnd(conn);
HTTPConnectionEnd(conn);
for(size_t i = 0; i < count; i++) FREE(&URIs[i]);
assert_zeroed(URIs, count);
return 0;
}