/* Serval DNA Rhizome HTTP external interface Copyright (C) 2013,2014 Serval Project Inc. This program 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 2 of the License, or (at your option) any later version. This program 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 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "serval.h" #include "conf.h" #include "httpd.h" #include "str.h" #include "strbuf.h" DEFINE_FEATURE(http_rhizome); DECLARE_HANDLER("/rhizome/status", rhizome_status_page); DECLARE_HANDLER("/rhizome/file/", rhizome_file_page); DECLARE_HANDLER("/rhizome/manifestbyprefix/", manifest_by_prefix_page); static int rhizome_file_page(httpd_request *r, const char *remainder) { /* Stream the specified payload */ if (!is_rhizome_http_enabled()) return 403; if (r->http.verb != HTTP_VERB_GET) return 405; if (r->http.request_header.content_range_count > 1) { // To support byte range sets, eg, Range: bytes=0-100,200-300,400- we would have // to reply with a multipart/byteranges MIME content. http_request_simple_response(&r->http, 501, "Not Implemented: Byte range sets"); return 1; } rhizome_filehash_t filehash; if (str_to_rhizome_filehash_t(&filehash, remainder) == -1) return 1; int ret = rhizome_response_content_init_filehash(r, &filehash); if (ret) return ret; // backwards compatibility, rhizome_fetch used to allow HTTP/1.0 responses only r->http.response.header.minor_version=0; http_request_response_generated(&r->http, 200, CONTENT_TYPE_BLOB, rhizome_payload_content); return 1; } static int manifest_by_prefix_page(httpd_request *r, const char *remainder) { if (!is_rhizome_http_enabled()) return 403; if (r->http.verb != HTTP_VERB_GET) return 405; rhizome_bid_t prefix; const char *endp = NULL; unsigned prefix_len = strn_fromhex(prefix.binary, sizeof prefix.binary, remainder, &endp); if (endp == NULL || *endp != '\0' || prefix_len < 1) return 404; // not found if ((r->manifest = rhizome_new_manifest()) == NULL) return 500; switch(rhizome_retrieve_manifest_by_prefix(prefix.binary, prefix_len, r->manifest)){ case RHIZOME_BUNDLE_STATUS_SAME: // backwards compatibility, rhizome_fetch used to allow HTTP/1.0 responses only r->http.response.header.minor_version=0; http_request_response_static(&r->http, 200, CONTENT_TYPE_BLOB, (const char *)r->manifest->manifestdata, r->manifest->manifest_all_bytes); return 1; case RHIZOME_BUNDLE_STATUS_NEW: return 404; default: return 500; } } static int rhizome_status_page(httpd_request *r, const char *remainder) { if (!is_rhizome_http_enabled()) return 403; if (*remainder) return 404; if (r->http.verb != HTTP_VERB_GET) return 405; char buf[32*1024]; strbuf b = strbuf_local_buf(buf); strbuf_puts(b, ""); strbuf_sprintf(b, "%d HTTP requests
", current_httpd_request_count); strbuf_sprintf(b, "%d Bundles transferring via MDP
", rhizome_cache_count()); rhizome_fetch_status_html(b); strbuf_puts(b, ""); if (strbuf_overrun(b)) return -1; http_request_response_static(&r->http, 200, CONTENT_TYPE_HTML, buf, strbuf_len(b)); return 1; }