static bool notRecentlyModified(TSession *const sessionP, time_t const fileModTime) { bool retval; const char *imsHdr; imsHdr = RequestHeaderValue(sessionP, "if-modified-since"); if (imsHdr) { bool valid; time_t datetime; DateDecode(imsHdr, &valid, &datetime); if (valid) { if (MIN(fileModTime, sessionP->date) <= datetime) retval = TRUE; else retval = FALSE; } else retval = FALSE; } else retval = FALSE; return retval; }
static abyss_bool ServerFileHandler(TSession * const r, char * const z, time_t const fileModTime, MIMEType * const mimeTypeP) { const char * mediatype; TFile file; uint64_t filesize; uint64_t start; uint64_t end; TDate date; char * p; TDate filedate; mediatype = MIMETypeGuessFromFile2(mimeTypeP, z); if (!FileOpen(&file,z,O_BINARY | O_RDONLY)) { ResponseStatusErrno(r); return TRUE; } fileDate(r, fileModTime, &filedate); p = RequestHeaderValue(r, "if-modified-since"); if (p) { if (DateDecode(p,&date)) { if (DateCompare(&filedate, &date) <= 0) { ResponseStatus(r, 304); ResponseWrite(r); return TRUE; } else r->ranges.size = 0; } } filesize = FileSize(&file); switch (r->ranges.size) { case 0: ResponseStatus(r, 200); break; case 1: { abyss_bool decoded; decoded = RangeDecode((char *)(r->ranges.item[0]), filesize, &start, &end); if (!decoded) { ListFree(&(r->ranges)); ResponseStatus(r, 200); break; } sprintf(z, "bytes %llu-%llu/%llu", start, end, filesize); ResponseAddField(r, "Content-range", z); ResponseContentLength(r, end - start + 1); ResponseStatus(r, 206); } break; default: ResponseContentType(r, "multipart/ranges; boundary=" BOUNDARY); ResponseStatus(r, 206); break; } if (r->ranges.size == 0) { ResponseContentLength(r, filesize); ResponseContentType(r, mediatype); } if (DateToString(&filedate, z)) ResponseAddField(r, "Last-Modified", z); ResponseWrite(r); if (r->request_info.method != m_head) sendBody(r, &file, filesize, mediatype, start, end, z); FileClose(&file); return TRUE; }
static abyss_bool ServerDirectoryHandler(TSession * const r, char * const z, time_t const fileModTime, MIMEType * const mimeTypeP) { TList list; abyss_bool text; abyss_bool ascending; uint16_t sort; /* 1=by name, 2=by date */ TPool pool; TDate date; const char * error; uint16_t responseStatus; TDate dirdate; const char * imsHdr; determineSortType(r->request_info.query, &ascending, &sort, &text, &error); if (error) { ResponseStatus(r,400); xmlrpc_strfree(error); return TRUE; } fileDate(r, fileModTime, &dirdate); imsHdr = RequestHeaderValue(r, "If-Modified-Since"); if (imsHdr) { if (DateDecode(imsHdr, &date)) { if (DateCompare(&dirdate, &date) <= 0) { ResponseStatus(r, 304); ResponseWrite(r); return TRUE; } } } if (!PoolCreate(&pool, 1024)) { ResponseStatus(r, 500); return TRUE; } generateListing(&list, z, r->request_info.uri, &pool, &error, &responseStatus); if (error) { ResponseStatus(r, responseStatus); xmlrpc_strfree(error); PoolFree(&pool); return TRUE; } /* Send something to the user to show that we are still alive */ ResponseStatus(r, 200); ResponseContentType(r, (text ? "text/plain" : "text/html")); if (DateToString(&dirdate, z)) ResponseAddField(r, "Last-Modified", z); ResponseChunked(r); ResponseWrite(r); if (r->request_info.method!=m_head) sendDirectoryDocument(&list, ascending, sort, text, r->request_info.uri, mimeTypeP, r, z); HTTPWriteEndChunk(r); /* Free memory and exit */ ListFree(&list); PoolFree(&pool); return TRUE; }