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}
}
return(buffer_st);
}
/* Return an error page */
static void filed_error_page(FILE *fp, const char *date_current, int error_number, int method) {
static void filed_error_page(FILE *fp, const char *date_current, int error_number, int method, const char *reason, struct filed_log_entry *log) {
char *error_string = "<html><head><title>ERROR</title></head><body>Unable to process request</body></html>";
fprintf(fp, "HTTP/1.1 %i Not OK\r\nDate: %s\r\nServer: filed\r\nLast-Modified: %s\r\nContent-Length: %llu\r\nContent-Type: %s\r\nConnection: close\r\n\r\n",
error_number,
date_current,
date_current,
(unsigned long long) strlen(error_string),
"text/html"
);
/* silence error string for HEAD requests */
if (method != FILED_REQUEST_METHOD_HEAD) {
fprintf(fp, "%s", error_string);
}
/* Log error */
/** reason must point to a globally allocated value **/
log->reason = reason;
log->http_code = error_number;
filed_log_entry(log);
/* Close connection */
fclose(fp);
return;
}
/* Return a redirect to index.html */
static void filed_redirect_index(FILE *fp, const char *date_current, const char *path, struct filed_log_entry *log) {
int http_code = 301;
fprintf(fp, "HTTP/1.1 %i OK\r\nDate: %s\r\nServer: filed\r\nLast-Modified: %s\r\nContent-Length: 0\r\nConnection: close\r\nLocation: %s\r\n\r\n",
http_code,
date_current,
date_current,
"index.html"
);
/* Log redirect */
log->reason = "redirect";
log->http_code = http_code;
filed_log_entry(log);
/* Close connection */
fclose(fp);
return;
/* Currently unused: path */
path = path;
}
/* Handle a single request from a client */
static void filed_handle_client(int fd, struct filed_http_request *request, struct filed_log_entry *log, struct filed_options *options) {
struct filed_fileinfo *fileinfo;
ssize_t sendfile_ret;
size_t sendfile_size;
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|
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|
return;
}
request = filed_get_http_request(fp, request, options);
if (request == NULL) {
filed_error_page(fp, date_current, 500, FILED_REQUEST_METHOD_GET);
log->http_code = 500;
log->reason = "format";
filed_log_entry(log);
fclose(fp);
http_code = -1;
filed_error_page(fp, date_current, 404, request->method);
filed_error_page(fp, date_current, 404, request->method, "open_failed", log);
log->http_code = 404;
log->reason = "open_failed";
filed_log_entry(log);
} else {
filed_error_page(fp, date_current, 416, request->method);
filed_error_page(fp, date_current, 416, request->method, "range_invalid", log);
close(fileinfo->fd);
log->http_code = 416;
log->reason = "range_invalid";
filed_log_entry(log);
} else {
if (request->headers.range.length == ((off_t) -1)) {
filed_log_msg_debug("Computing length to fit in bounds: fileinfo->len = %llu, request->headers.range.offset = %llu",
(unsigned long long) fileinfo->len,
(unsigned long long) request->headers.range.offset
);
request->headers.range.length = fileinfo->len - request->headers.range.offset;
}
filed_log_msg_debug("Partial request, starting at: %llu and running for %lli bytes",
(unsigned long long) request->headers.range.offset,
(long long) request->headers.range.length
);
http_code = 206;
}
} else {
if (request->headers.range.present) {
http_code = 206;
} else {
http_code = 200;
}
request->headers.range.offset = 0;
request->headers.range.length = fileinfo->len;
}
if (http_code > 0) {
fprintf(fp, "HTTP/1.1 %i OK\r\nDate: %s\r\nServer: filed\r\nLast-Modified: %s\r\nContent-Length: %llu\r\nAccept-Ranges: bytes\r\nContent-Type: %s\r\nConnection: close\r\nETag: \"%s\"\r\n",
http_code,
date_current,
fileinfo->lastmod,
(unsigned long long) request->headers.range.length,
fileinfo->type,
fileinfo->etag
);
if (http_code == 206) {
fprintf(fp, "Content-Range: bytes %llu-%llu/%llu\r\n",
(unsigned long long) request->headers.range.offset,
(unsigned long long) (request->headers.range.offset + request->headers.range.length - 1),
(unsigned long long) fileinfo->len
);
}
fprintf(fp, "\r\n");
fflush(fp);
log->http_code = http_code;
log->reason = "OK";
log->starttime = time(NULL);
log->req_offset = request->headers.range.offset;
log->req_length = request->headers.range.length;
log->file_length = fileinfo->len;
int socket_flags;
fd_set rfd, wfd;
char sinkbuf[8192];
ssize_t read_ret;
FD_ZERO(&rfd);
FD_ZERO(&wfd);
FD_SET(fd, &rfd);
FD_SET(fd, &wfd);
socket_flags = fcntl(fd, F_GETFL);
fcntl(fd, F_SETFL, socket_flags | O_NONBLOCK);
sendfile_offset = request->headers.range.offset;
sendfile_len = request->headers.range.length;
sendfile_sent = 0;
while (request->method == FILED_REQUEST_METHOD_GET) {
if (sendfile_len > FILED_SENDFILE_MAX) {
sendfile_size = FILED_SENDFILE_MAX;
} else {
sendfile_size = sendfile_len;
}
sendfile_ret = sendfile(fd, fileinfo->fd, &sendfile_offset, sendfile_size);
if (sendfile_ret <= 0) {
if (errno == EAGAIN) {
sendfile_ret = 0;
while (1) {
select(fd + 1, &rfd, &wfd, NULL, NULL);
if (FD_ISSET(fd, &rfd)) {
read_ret = read(fd, sinkbuf, sizeof(sinkbuf));
if (read_ret <= 0) {
break;
}
}
if (FD_ISSET(fd, &wfd)) {
read_ret = 1;
break;
}
}
if (read_ret <= 0) {
break;
}
} else {
break;
}
break;
}
sendfile_len -= sendfile_ret;
sendfile_sent += sendfile_ret;
if (sendfile_len == 0) {
break;
}
}
log->endtime = (time_t) -1;
log->sent_length = sendfile_sent;
filed_log_entry(log);
}
close(fileinfo->fd);
}
|