static int
answer_articleselect(struct evbuffer *buf, const boardheader_t *bptr,
const char *rest_key, select_part_func sfunc, void *ctx)
{
char path[PATH_MAX];
const char *ck, *filename;
int cklen, offset, maxlen = 0;
struct stat st;
if (!parse_articlepart_key(rest_key, &ck, &cklen, &offset, &maxlen, &filename))
return -1;
if (!is_valid_article_filename(filename))
return -1;
setbfile(path, bptr->brdname, filename);
if (answer_file(buf, path, &st, ck, cklen, offset, maxlen) < 0)
return -1;
int sel_offset, sel_size;
int len = evbuffer_get_length(buf);
if (sfunc(evbuffer_pullup(buf, len), len, &sel_offset, &sel_size, ctx) != 0 ||
evbuffer_slice(buf, sel_offset, sel_size) != 0)
return -1;
struct evbuffer *meta = evbuffer_new();
evbuffer_add_printf(meta, "%d-%d,%lu,%d,%d\n",
(int) st.st_dev, (int) st.st_ino, st.st_size, sel_offset, sel_size);
evbuffer_prepend_buffer(buf, meta);
evbuffer_free(meta);
return 0;
}
int
select_article(struct evbuffer *buf, select_result_t *result, const select_spec_t *spec)
{
select_part_func sfunc;
switch (spec->type) {
case SELECT_TYPE_HEAD: sfunc = select_article_head; break;
case SELECT_TYPE_TAIL: sfunc = select_article_tail; break;
case SELECT_TYPE_PART: sfunc = select_article_part; break;
default: return SELECT_EARG;
}
struct stat st;
int ret;
if ((ret = answer_file(buf, spec->filename, &st, spec->cachekey,
spec->cachekey_len, spec->offset, spec->maxlen)) < 0)
return ret;
int sel_offset, sel_size;
int len = evbuffer_get_length(buf);
const char *data = (const char *) evbuffer_pullup(buf, -1);
if (sfunc(data, len, &sel_offset, &sel_size, NULL) != 0 ||
evbuffer_slice(buf, sel_offset, sel_size) != 0)
return SELECT_EUNKNOWN;
if (result != NULL) {
snprintf(result->cachekey, sizeof(result->cachekey), "%d-%d",
(int)st.st_dev, (int)st.st_ino);
result->size = st.st_size;
result->sel_offset = sel_offset;
result->sel_size = sel_size;
}
return SELECT_OK;
}
static void
answer_appropriate(struct vmod_fsdirector_file_system *fs)
{
unsigned available;
char *url;
char *url_start;
char *url_end;
size_t url_len;
size_t root_len;
char *path;
struct stat stat_buf;
if (strncmp("GET ", fs->htc.ws->s, 4)) {
prepare_answer(&fs->htc, 405);
prepare_body(&fs->htc);
return;
}
url_start = &fs->htc.ws->s[4];
url_end = strchr(url_start, ' ');
url_len = (url_end - url_start) + strlen(fs->root) + 1;
url = WS_Alloc(fs->htc.ws, url_len);
snprintf(url, url_len, "%s%s", fs->root, url_start);
path = url;
if (lstat(path, &stat_buf) < 0) {
handle_file_error(&fs->htc, errno);
return;
}
answer_file(fs, &stat_buf, path);
}
