Fri, 13 Jun 2014 13:52:59 +0200
added new sync tool
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2013 Olaf Wintermann. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <libxml/tree.h> #include "utils.h" #include "session.h" #include "methods.h" #include "davql.h" #include "crypto.h" #include "ucx/buffer.h" #include "ucx/utils.h" #include "resource.h" #define xstreq(a,b) xmlStrEqual(BAD_CAST a, BAD_CAST b) DavResource* dav_resource_new(DavSession *sn, char *path) { //char *href = util_url_path(url); //DavResource *res = dav_resource_new_href(sn, href); char *parent = util_parent_path(path); char *name = util_resource_name(path); char *href = dav_session_create_plain_href(sn, path); DavResource *res = dav_resource_new_full(sn, parent, name, href); free(parent); return res; } DavResource* dav_resource_new_child(DavSession *sn, DavResource *parent, char *name) { char *path = util_concat_path(parent->path, name); char *href = dav_session_create_plain_href(sn, path); DavResource *res = dav_resource_new_full(sn, parent->path, name, href); free(path); return res; } DavResource* dav_resource_new_href(DavSession *sn, char *href) { DavResource *res = ucx_mempool_calloc(sn->mp, 1, sizeof(DavResource)); res->session = sn; // set name, path and href resource_set_info(res, href); // initialize resource data res->data = resource_data_new(sn); return res; } DavResource* dav_resource_new_full(DavSession *sn, char *parent_path, char *name, char *href) { DavResource *res = ucx_mempool_calloc(sn->mp, 1, sizeof(DavResource)); res->session = sn; // set name, path and href sstr_t n = sstr(name); res->name = sstrdup_a(sn->mp->allocator, n).ptr; if(n.ptr[n.length-1] == '/') { res->name[n.length-1] = '\0'; } char *path = util_concat_path(parent_path, name); res->path = dav_session_strdup(sn, path); free(path); res->href = href; // initialize resource data res->data = resource_data_new(sn); // cache href/path if(href) { dav_session_cache_path(sn, sstr(path), sstr(href)); } return res; } void dav_resource_free(DavResource *res) { DavSession *sn = res->session; dav_session_free(sn, res->name); dav_session_free(sn, res->path); if(res->href) { dav_session_free(sn, res->href); } DavResourceData *data = res->data; UcxMapIterator i = ucx_map_iterator(data->properties); UcxKey key; char *property; UCX_MAP_FOREACH(key, property, i) { dav_session_free(sn, property); } ucx_map_free(data->properties); UCX_FOREACH(elm, data->set) { DavProperty *p = elm->data; dav_session_free(sn, p->ns->name); if(p->ns->prefix) { dav_session_free(sn, p->ns->prefix); } dav_session_free(sn, p->ns); dav_session_free(sn, p->name); dav_session_free(sn, p->value); dav_session_free(sn, p); } UCX_FOREACH(elm, data->remove) { DavProperty *p = elm->data; dav_session_free(sn, p->ns->name); if(p->ns->prefix) { dav_session_free(sn, p->ns->prefix); } dav_session_free(sn, p->ns); dav_session_free(sn, p->name); dav_session_free(sn, p->value); dav_session_free(sn, p); } if(!data->read && data->content) { dav_session_free(sn, data->content); } dav_session_free(sn, data); dav_session_free(sn, res); } void dav_resource_free_all(DavResource *res) { DavResource *child = res->children; dav_resource_free(res); while(child) { DavResource *next = child->next; dav_resource_free_all(child); child = next; } } void resource_set_href(DavResource *res, sstr_t href) { res->href = sstrdup_a(res->session->mp->allocator, href).ptr; } void resource_set_info(DavResource *res, char *href_str) { char *url_str = NULL; curl_easy_getinfo(res->session->handle, CURLINFO_EFFECTIVE_URL, &url_str); sstr_t name = sstr(util_resource_name(href_str)); sstr_t href = sstr(href_str); sstr_t base_href = sstr(util_url_path(res->session->base_url)); sstr_t path = sstrsubs(href, base_href.length - 1); UcxAllocator *a = res->session->mp->allocator; CURL *handle = res->session->handle; int nlen = 0; char *uname = curl_easy_unescape(handle, name.ptr, name.length , &nlen); int plen = 0; char *upath = curl_easy_unescape(handle, path.ptr, path.length, &plen); res->name = sstrdup_a(a, sstrn(uname, nlen)).ptr; res->href = sstrdup_a(a, href).ptr; res->path = sstrdup_a(a, sstrn(upath, plen)).ptr; curl_free(uname); curl_free(upath); } DavResourceData* resource_data_new(DavSession *sn) { DavResourceData *data = ucx_mempool_malloc( sn->mp, sizeof(DavResourceData)); if(!data) { return NULL; } data->properties = ucx_map_new_a(sn->mp->allocator, 32); data->set = NULL; data->remove = NULL; data->content = NULL; data->read = NULL; data->length = 0; return data; } char* dav_resource_get_href(DavResource *resource) { if(!resource->href) { resource->href = dav_session_get_href( resource->session, resource->path); } return resource->href; } void resource_add_property(DavResource *res, char *ns, char *name, char *val) { if(!val) { return; } UcxKey key = dav_property_key(ns, name); sstr_t v = sstrdup_a(res->session->mp->allocator, sstr(val)); ucx_map_put(((DavResourceData*)res->data)->properties, key, v.ptr); free(key.data); } char* resource_get_property(DavResource *res, char *ns, char *name) { UcxKey key = dav_property_key(ns, name); DavResourceData *data = (DavResourceData*)res->data; char *property = ucx_map_get(data->properties, key); free(key.data); return property; } UcxKey dav_property_key(char *ns, char *name) { sstr_t ns_str = sstr(ns); sstr_t name_str = sstr(name); sstr_t key; key.length = ns_str.length + name_str.length + 1; key.ptr = malloc(key.length + 1); key = sstrncat(key, 3, ns_str, S(" "), name_str); return ucx_key(key.ptr, key.length); } void resource_add_child(DavResource *parent, DavResource *child) { child->next = NULL; if(parent->children) { DavResource *last = parent->children; while(last->next) { last = last->next; } last->next = child; child->prev = last; } else { child->prev = NULL; parent->children = child; } child->parent = parent; } char* dav_get_property(DavResource *res, char *name) { char *pns; char *pname; dav_get_property_namespace(res->session->context, name, &pns, &pname); return dav_get_property_ns(res, pns, pname); } char* dav_get_property_ns(DavResource *res, char *ns, char *name) { char *property = resource_get_property(res, ns, name); DavResourceData *data = res->data; // resource_get_property only returns persistent properties // check the remove and set list if(property) { // if the property is in the remove list, we return NULL UCX_FOREACH(elm, data->remove) { DavProperty *p = elm->data; if(!strcmp(p->name, name) && !strcmp(p->ns->name, ns)) { return NULL; } } } // the set list contains property updates // we return an updated property if possible UCX_FOREACH(elm, data->set) { DavProperty *p = elm->data; if(!strcmp(p->name, name) && !strcmp(p->ns->name, ns)) { return p->value; } } // no property update return property; } void dav_set_property(DavResource *res, char *name, char *value) { char *pns; char *pname; dav_get_property_namespace(res->session->context, name, &pns, &pname); dav_set_property_ns(res, pns, pname, value); } void dav_set_property_ns(DavResource *res, char *ns, char *name, char *value) { UcxAllocator *a = res->session->mp->allocator; DavResourceData *data = res->data; DavProperty *property = dav_session_malloc( res->session, sizeof(DavProperty)); property->name = dav_session_strdup(res->session, name); property->value = dav_session_strdup(res->session, value); DavNamespace *namespace = dav_session_malloc( res->session, sizeof(DavNamespace)); namespace->prefix = NULL; namespace->name = dav_session_strdup(res->session, ns); property->ns = namespace; data->set = ucx_list_append_a(a, data->set, property); } void dav_remove_property(DavResource *res, char *name) { char *pns; char *pname; dav_get_property_namespace(res->session->context, name, &pns, &pname); dav_remove_property_ns(res, pns, pname); } void dav_remove_property_ns(DavResource *res, char *ns, char *name) { DavResourceData *data = res->data; UcxAllocator *a = res->session->mp->allocator; DavProperty *property = dav_session_malloc( res->session, sizeof(DavProperty)); property->name = sstrdup_a(a, sstr(name)).ptr; property->value = NULL; DavNamespace *namespace = dav_session_malloc( res->session, sizeof(DavNamespace)); namespace->prefix = NULL; namespace->name = sstrdup_a(a, sstr(ns)).ptr; property->ns = namespace; data->remove = ucx_list_append_a(a, data->remove, property); } void dav_set_content(DavResource *res, void *stream, dav_read_func read_func) { DavResourceData *data = res->data; data->content = stream; data->read = read_func; data->length = 0; } void dav_set_content_data(DavResource *res, char *content, size_t length) { DavSession *sn = res->session; DavResourceData *data = res->data; data->content = dav_session_malloc(sn, length); memcpy(data->content, content, length); data->read = NULL; data->length = length; } int dav_load(DavResource *res) { UcxBuffer *rqbuf = create_allprop_propfind_request(); int ret = dav_propfind(res->session, res, rqbuf, NULL, 0); ucx_buffer_free(rqbuf); return ret; } int dav_store(DavResource *res) { DavSession *sn = res->session; DavResourceData *data = res->data; util_set_url(sn, dav_resource_get_href(res)); // store content if(data->content) { int encryption = DAV_ENCRYPT_CONTENT(sn) && sn->key; CURLcode ret; if(encryption) { AESEncrypter *enc = NULL; UcxBuffer *buf = NULL; if(data->read) { enc = aes_encrypter_new(sn->key, data->content, data->read); } else { buf = ucx_buffer_new(data->content, data->length, 0); buf->size = data->length; enc = aes_encrypter_new( sn->key, buf, (dav_read_func)ucx_buffer_read); } // create an empty resource ret = do_put_request( sn->handle, enc, (dav_read_func)aes_read, 0); aes_encrypter_close(enc); if(buf) { ucx_buffer_free(buf); } // add crypto properties // TODO: store the properties later if(resource_add_crypto_info(sn, res->href, res->name)) { return 1; } } else { ret = do_put_request( sn->handle, data->content, data->read, data->length); } int status = 0; curl_easy_getinfo(sn->handle, CURLINFO_RESPONSE_CODE, &status); if(ret == CURLE_OK && (status >= 200 && status < 300)) { res->session->error = 0; // cleanup node data if(!data->read) { ucx_mempool_free(sn->mp, data->content); } data->content = NULL; data->read = NULL; data->length = 0; } else { dav_session_set_error(sn, ret, status); return 1; } } // store properties if(data->set || data->remove) { UcxBuffer *request = create_proppatch_request(data); UcxBuffer *response = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND); CURLcode ret = do_proppatch_request(sn->handle, request, response); int status = 0; curl_easy_getinfo (sn->handle, CURLINFO_RESPONSE_CODE, &status); if(ret == CURLE_OK && status == 207) { //printf("%s\n", response->space); // TODO: parse response // TODO: cleanup node data correctly data->set = NULL; data->remove = NULL; } else { dav_session_set_error(sn, ret, status); return 1; } } sn->error = DAV_OK; return 0; } int dav_get_content(DavResource *res, void *stream, dav_write_func write_fnc) { DavSession *sn = res->session; CURL *handle = sn->handle; util_set_url(res->session, dav_resource_get_href(res)); // check encryption AESDecrypter *dec = NULL; if(DAV_DECRYPT_CONTENT(sn)) { char *keyname = dav_get_property_ns(res, DAV_NS, "crypto-key"); if(keyname) { DavKey *key = dav_context_get_key(sn->context, keyname); if(key) { dec = aes_decrypter_new(key, stream, write_fnc); stream = dec; write_fnc = (dav_write_func)aes_write; } } } curl_easy_setopt(handle, CURLOPT_SSL_VERIFYPEER, 0); curl_easy_setopt(handle, CURLOPT_CUSTOMREQUEST, NULL); curl_easy_setopt(handle, CURLOPT_PUT, 0L); curl_easy_setopt(handle, CURLOPT_UPLOAD, 0L); curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, write_fnc); curl_easy_setopt(handle, CURLOPT_WRITEDATA, stream); CURLcode ret = curl_easy_perform(handle); if(dec) { aes_decrypter_close(dec); } int status = 0; curl_easy_getinfo (handle, CURLINFO_RESPONSE_CODE, &status); if(ret == CURLE_OK && (status >= 200 && status < 300)) { res->session->error = DAV_OK; return 0; } else { dav_session_set_error(res->session, ret, status); return 1; } } DavResource* dav_create_child(DavResource *parent, char *name) { DavResource *res = dav_resource_new_child(parent->session, parent, name); if(dav_create(res)) { // TODO: free resource return NULL; } else { return res; } } int dav_delete(DavResource *res) { CURL *handle = res->session->handle; util_set_url(res->session, dav_resource_get_href(res)); UcxBuffer *response = ucx_buffer_new(NULL, 4096, UCX_BUFFER_AUTOEXTEND); CURLcode ret = do_delete_request(handle, response); int status = 0; curl_easy_getinfo (handle, CURLINFO_RESPONSE_CODE, &status); if(ret == CURLE_OK && (status >= 200 && status < 300)) { res->session->error = DAV_OK; // TODO: parse response // TODO: free res return 0; } else { dav_session_set_error(res->session, ret, status); return 1; } } static int create_ancestors(DavSession *sn, char *href, char *path) { CURL *handle = sn->handle; CURLcode code; int status = 0; int ret = 0; if(strlen(path) <= 1) { return 0; } char *p = util_parent_path(path); char *h = util_parent_path(href); for(int i=0;i<2;i++) { util_set_url(sn, h); code = do_mkcol_request(handle); curl_easy_getinfo(handle, CURLINFO_RESPONSE_CODE, &status); if(status == 201) { // resource successfully created char *name = util_resource_name(p); int len = strlen(name); if(name[len - 1] == '/') { name[len - 1] = '\0'; } if(resource_add_crypto_info(sn, h, name)) { // TODO: error } break; } else if(status == 405) { // parent already exists break; } else if(status == 409) { // parent doesn't exist if(create_ancestors(sn, h, p)) { ret = 1; break; } } else { dav_session_set_error(sn, code, status); ret = 1; break; } } free(p); free(h); return ret; } static int create_resource(DavResource *res, int *status) { DavSession *sn = res->session; CURL *handle = sn->handle; util_set_url(sn, dav_resource_get_href(res)); CURLcode code; if(res->iscollection) { code = do_mkcol_request(handle); } else { code = do_put_request(handle, "", NULL, 0); } int s = 0; curl_easy_getinfo(handle, CURLINFO_RESPONSE_CODE, &s); *status = s; if(code == CURLE_OK && (s >= 200 && s < 300)) { sn->error = DAV_OK; // if the session has encrypted file names, add crypto infos resource_add_crypto_info(sn, res->href, res->name); // TODO: check return type // do a minimal propfind request UcxBuffer *rqbuf = create_propfind_request(sn, NULL); int ret = dav_propfind(sn, res, rqbuf, NULL, 0); ucx_buffer_free(rqbuf); return ret; } else { dav_session_set_error(sn, code, s); return 1; } } int dav_create(DavResource *res) { int status; if(!create_resource(res, &status)) { // resource successfully created return 0; } if(status == 403 || status == 409) { // create intermediate collections if(create_ancestors(res->session, res->href, res->path)) { return 1; } } return create_resource(res, &status); } int dav_exists(DavResource *res) { DavSession *sn = res->session; CURL *handle = sn->handle; util_set_url(sn, dav_resource_get_href(res)); CURLcode ret = do_head_request(handle); int status = 0; curl_easy_getinfo (handle, CURLINFO_RESPONSE_CODE, &status); if(ret == CURLE_OK && (status >= 200 && status < 300)) { return 1; } else { dav_session_set_error(sn, ret, status); return 0; } } int resource_add_crypto_info(DavSession *sn, char *href, char *name) { if(!DAV_IS_ENCRYPTED(sn)) { return 0; } UcxBuffer *request = create_crypto_proppatch_request(sn, sn->key, name); UcxBuffer *response = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND); util_set_url(sn, href); CURLcode ret = do_proppatch_request(sn->handle, request, response); int status = 0; curl_easy_getinfo (sn->handle, CURLINFO_RESPONSE_CODE, &status); if(ret == CURLE_OK && status == 207) { // TODO: parse response sn->error = DAV_OK; return 0; } else { dav_session_set_error(sn, ret, status); return 1; } }