423 lines
9.3 KiB
C
423 lines
9.3 KiB
C
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include "base.h"
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#include "log.h"
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#include "buffer.h"
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#include "plugin.h"
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#include "response.h"
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#include "file_cache_funcs.h"
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/**
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* this is a uploadprogress for a lighttpd plugin
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*
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*/
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typedef struct {
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buffer *con_id;
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connection *con;
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} connection_map_entry;
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typedef struct {
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connection_map_entry **ptr;
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size_t used;
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size_t size;
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} connection_map;
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/* plugin config for all request/connections */
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typedef struct {
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buffer *progress_url;
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} plugin_config;
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typedef struct {
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PLUGIN_DATA;
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connection_map *con_map;
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plugin_config **config_storage;
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plugin_config conf;
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} plugin_data;
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/**
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*
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* connection maps
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*
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*/
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/* init the plugin data */
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connection_map *connection_map_init() {
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connection_map *cm;
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cm = calloc(1, sizeof(*cm));
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return cm;
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}
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void connection_map_free(connection_map *cm) {
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size_t i;
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for (i = 0; i < cm->size; i++) {
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connection_map_entry *cme = cm->ptr[i];
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if (!cme) break;
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if (cme->con_id) {
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buffer_free(cme->con_id);
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}
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free(cme);
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}
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free(cm);
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}
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int connection_map_insert(connection_map *cm, connection *con, buffer *con_id) {
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connection_map_entry *cme;
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size_t i;
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if (cm->size == 0) {
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cm->size = 16;
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cm->ptr = malloc(cm->size * sizeof(*(cm->ptr)));
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for (i = 0; i < cm->size; i++) {
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cm->ptr[i] = NULL;
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}
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} else if (cm->used == cm->size) {
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cm->size += 16;
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cm->ptr = realloc(cm->ptr, cm->size * sizeof(*(cm->ptr)));
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for (i = cm->used; i < cm->size; i++) {
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cm->ptr[i] = NULL;
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}
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}
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if (cm->ptr[cm->used]) {
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/* is already alloced, just reuse it */
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cme = cm->ptr[cm->used];
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} else {
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cme = malloc(sizeof(*cme));
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}
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cme->con_id = buffer_init();
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buffer_copy_string_buffer(cme->con_id, con_id);
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cme->con = con;
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cm->ptr[cm->used++] = cme;
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return 0;
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}
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connection *connection_map_get_connection(connection_map *cm, buffer *con_id) {
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size_t i;
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for (i = 0; i < cm->used; i++) {
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connection_map_entry *cme = cm->ptr[i];
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if (buffer_is_equal(cme->con_id, con_id)) {
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/* found connection */
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return cme->con;
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}
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}
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return NULL;
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}
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int connection_map_remove_connection(connection_map *cm, connection *con) {
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size_t i;
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for (i = 0; i < cm->used; i++) {
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connection_map_entry *cme = cm->ptr[i];
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if (cme->con == con) {
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/* found connection */
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buffer_reset(cme->con_id);
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cme->con = NULL;
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cm->used--;
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/* swap positions with the last entry */
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if (cm->used) {
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cm->ptr[i] = cm->ptr[cm->used];
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cm->ptr[cm->used] = cme;
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}
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return 1;
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}
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}
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return 0;
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}
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/* init the plugin data */
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INIT_FUNC(mod_uploadprogress_init) {
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plugin_data *p;
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p = calloc(1, sizeof(*p));
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p->con_map = connection_map_init();
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return p;
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}
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/* detroy the plugin data */
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FREE_FUNC(mod_uploadprogress_free) {
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plugin_data *p = p_d;
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UNUSED(srv);
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if (!p) return HANDLER_GO_ON;
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if (p->config_storage) {
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size_t i;
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for (i = 0; i < srv->config_context->used; i++) {
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plugin_config *s = p->config_storage[i];
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buffer_free(s->progress_url);
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free(s);
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}
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free(p->config_storage);
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}
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connection_map_free(p->con_map);
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free(p);
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return HANDLER_GO_ON;
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}
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/* handle plugin config and check values */
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SETDEFAULTS_FUNC(mod_uploadprogress_set_defaults) {
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plugin_data *p = p_d;
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size_t i = 0;
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config_values_t cv[] = {
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{ "upload-progress.progress-url", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
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{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
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};
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if (!p) return HANDLER_ERROR;
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p->config_storage = calloc(1, srv->config_context->used * sizeof(specific_config *));
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for (i = 0; i < srv->config_context->used; i++) {
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plugin_config *s;
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s = calloc(1, sizeof(plugin_config));
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s->progress_url = buffer_init();
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cv[0].destination = s->progress_url;
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p->config_storage[i] = s;
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if (0 != config_insert_values_global(srv, ((data_config *)srv->config_context->data[i])->value, cv)) {
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return HANDLER_ERROR;
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}
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}
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return HANDLER_GO_ON;
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}
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#define PATCH(x) \
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p->conf.x = s->x;
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static int mod_uploadprogress_patch_connection(server *srv, connection *con, plugin_data *p) {
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size_t i, j;
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plugin_config *s = p->config_storage[0];
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PATCH(progress_url);
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/* skip the first, the global context */
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for (i = 1; i < srv->config_context->used; i++) {
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data_config *dc = (data_config *)srv->config_context->data[i];
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s = p->config_storage[i];
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/* condition didn't match */
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if (!config_check_cond(srv, con, dc)) continue;
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/* merge config */
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for (j = 0; j < dc->value->used; j++) {
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data_unset *du = dc->value->data[j];
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if (buffer_is_equal_string(du->key, CONST_STR_LEN("upload-progress.progress-url"))) {
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PATCH(progress_url);
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}
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}
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}
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return 0;
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}
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#undef PATCH
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/**
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*
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* the idea:
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*
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* for the first request we check if it is a post-request
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*
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* if no, move out, don't care about them
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*
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* if yes, take the connection structure and register it locally
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* in the progress-struct together with an session-id (md5 ... )
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*
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* if the connections closes, cleanup the entry in the progress-struct
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*
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* a second request can now get the info about the size of the upload,
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* the received bytes
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*
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*/
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URIHANDLER_FUNC(mod_uploadprogress_uri_handler) {
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plugin_data *p = p_d;
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size_t i;
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data_string *ds;
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buffer *b;
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connection *post_con = NULL;
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UNUSED(srv);
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if (con->uri.path->used == 0) return HANDLER_GO_ON;
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mod_uploadprogress_patch_connection(srv, con, p);
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/* check if this is a POST request */
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switch(con->request.http_method_id) {
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case HTTP_METHOD_POST:
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/* the request has to contain a 32byte ID */
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if (NULL == (ds = (data_string *)array_get_element(con->request.headers, "X-Progress-ID"))) {
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if (!buffer_is_empty(con->uri.query)) {
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/* perhaps the POST request is using the querystring to pass the X-Progress-ID */
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b = con->uri.query;
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} else {
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return HANDLER_GO_ON;
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}
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} else {
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b = ds->value;
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}
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if (b->used != 32 + 1) {
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log_error_write(srv, __FILE__, __LINE__, "sd",
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"len of progress-id != 32:", b->used - 1);
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return HANDLER_GO_ON;
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}
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for (i = 0; i < b->used - 1; i++) {
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char c = b->ptr[i];
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if (!light_isxdigit(c)) {
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log_error_write(srv, __FILE__, __LINE__, "sb",
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"non-xdigit in progress-id:", b);
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return HANDLER_GO_ON;
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}
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}
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connection_map_insert(p->con_map, con, b);
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return HANDLER_GO_ON;
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case HTTP_METHOD_GET:
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if (!buffer_is_equal(con->uri.path, p->conf.progress_url)) {
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return HANDLER_GO_ON;
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}
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if (NULL == (ds = (data_string *)array_get_element(con->request.headers, "X-Progress-ID"))) {
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if (!buffer_is_empty(con->uri.query)) {
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/* perhaps the GET request is using the querystring to pass the X-Progress-ID */
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b = con->uri.query;
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} else {
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return HANDLER_GO_ON;
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}
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} else {
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b = ds->value;
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}
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if (b->used != 32 + 1) {
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log_error_write(srv, __FILE__, __LINE__, "sd",
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"len of progress-id != 32:", b->used - 1);
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return HANDLER_GO_ON;
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}
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for (i = 0; i < b->used - 1; i++) {
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char c = b->ptr[i];
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if (!light_isxdigit(c)) {
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log_error_write(srv, __FILE__, __LINE__, "sb",
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"non-xdigit in progress-id:", b);
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return HANDLER_GO_ON;
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}
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}
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/* get the connection */
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if (NULL == (post_con = connection_map_get_connection(p->con_map, b))) {
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con->http_status = 404;
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return HANDLER_FINISHED;
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}
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file_cache_release_entry(srv, file_cache_get_entry(srv, con->physical.path));
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buffer_reset(con->physical.path);
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con->file_started = 1;
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con->file_finished = 1;
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response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/xml"));
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/* just an attempt the force the IE/proxies to NOT cache the request ... doesn't help :( */
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response_header_overwrite(srv, con, CONST_STR_LEN("Pragma"), CONST_STR_LEN("no-cache"));
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response_header_overwrite(srv, con, CONST_STR_LEN("Expires"), CONST_STR_LEN("Thu, 19 Nov 1981 08:52:00 GMT"));
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response_header_overwrite(srv, con, CONST_STR_LEN("Cache-Control"), CONST_STR_LEN("no-store, no-cache, must-revalidate, post-check=0, pre-check=0"));
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b = chunkqueue_get_append_buffer(con->write_queue);
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/* prepare XML */
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BUFFER_COPY_STRING_CONST(b, "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>");
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BUFFER_APPEND_STRING_CONST(b, "<upload>");
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BUFFER_APPEND_STRING_CONST(b, "<size>");
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buffer_append_off_t(b, post_con->request.content_length);
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BUFFER_APPEND_STRING_CONST(b, "</size>");
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BUFFER_APPEND_STRING_CONST(b, "<received>");
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buffer_append_off_t(b, post_con->post_data_fetched);
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BUFFER_APPEND_STRING_CONST(b, "</received>");
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BUFFER_APPEND_STRING_CONST(b, "</upload>");
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return HANDLER_FINISHED;
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default:
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break;
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}
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return HANDLER_GO_ON;
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}
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REQUESTDONE_FUNC(mod_uploadprogress_request_done) {
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plugin_data *p = p_d;
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UNUSED(srv);
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||
|
|
|
||
|
|
if (con->uri.path->used == 0) return HANDLER_GO_ON;
|
||
|
|
|
||
|
|
if (connection_map_remove_connection(p->con_map, con)) {
|
||
|
|
/* removed */
|
||
|
|
}
|
||
|
|
|
||
|
|
return HANDLER_GO_ON;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* this function is called at dlopen() time and inits the callbacks */
|
||
|
|
|
||
|
|
int mod_uploadprogress_plugin_init(plugin *p) {
|
||
|
|
p->version = LIGHTTPD_VERSION_ID;
|
||
|
|
p->name = buffer_init_string("uploadprogress");
|
||
|
|
|
||
|
|
p->init = mod_uploadprogress_init;
|
||
|
|
p->handle_uri_clean = mod_uploadprogress_uri_handler;
|
||
|
|
p->handle_request_done = mod_uploadprogress_request_done;
|
||
|
|
p->set_defaults = mod_uploadprogress_set_defaults;
|
||
|
|
p->cleanup = mod_uploadprogress_free;
|
||
|
|
|
||
|
|
p->data = NULL;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|