diff -r e43dee5892f4 -r f82aa7afe872 test/ctestfile.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/ctestfile.c	Tue Apr 21 09:47:52 2015 +0200
@@ -0,0 +1,386 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2015 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 <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ucx/string.h>
+#include <ucx/buffer.h>
+#include <ucx/utils.h>
+#include <libxml/tree.h>
+#include <curl/curl.h>
+
+#include <openssl/sha.h>
+#include <openssl/hmac.h>
+#include <openssl/evp.h>
+#include <openssl/bio.h>
+#include <openssl/buffer.h>
+#include <openssl/rand.h>
+
+#include "utils.h"
+#include "crypto.h"
+#include "webdav.h"
+
+
+time_t util_parse_creationdate(char *str) {
+    // example: 2012-11-29T21:35:35Z
+    if(!str) {
+        return 0;
+    }
+    // TODO
+    return 0;
+}
+
+time_t util_parse_lastmodified(char *str) {
+    // example: Thu, 29 Nov 2012 21:35:35 GMT
+    if(!str) {
+        return 0;
+    } else {
+        return curl_getdate(str, NULL);
+    }
+}
+
+int util_getboolean(char *v) {
+    if(v[0] == 'T' || v[0] == 't') {
+        return 1;
+    }
+    return 0;
+}
+
+int util_strtoint(char *str, int64_t *value) {
+    char *end;
+    int64_t val = strtoll(str, &end, 0);
+    if(strlen(end) == 0) {
+        *value = val;
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+char* util_url_path(char *url) { 
+    char *path = NULL;
+    size_t len = strlen(url);
+    int slashcount = 0;
+    int slmax;
+    if(len > 7 && !strncasecmp(url, "http://", 7)) {
+        slmax = 3;
+    } else if(len > 8 && !strncasecmp(url, "https://", 8)) {
+        slmax = 3;
+    } else {
+        slmax = 1;
+    }
+    char c;
+    for(int i=0;i<len;i++) {
+        c = url[i];
+        if(c == '/') {
+            slashcount++;
+            if(slashcount == slmax) {
+                path = url + i;
+                break;
+            }
+        }
+    } 
+    return path;
+}
+
+char* util_url_decode(DavSession *sn, char *url) {
+    char *unesc = curl_easy_unescape(sn->handle, url, strlen(url), NULL);
+    char *ret = strdup(unesc);
+    curl_free(unesc);
+    return ret;
+}
+
+char* util_resource_name(char *url) {
+    int si = 0;
+    int osi = 0;
+    int i = 0;
+    int p = 0;
+    char c;
+    while((c = url[i]) != 0) {
+        if(c == '/') {
+            osi = si;
+            si = i;
+            p = 1;
+        }
+        i++;
+    }
+    
+    char *name = url + si + p;
+    if(name[0] == 0) {
+        name = url + osi + p;
+        if(name[0] == 0) {
+            return url;
+        }
+    }
+    
+    return name;
+}
+
+int util_mkdir(char *path, mode_t mode) {
+#ifdef _WIN32
+    return mkdir(path);
+#else
+    return mkdir(path, mode);
+#endif
+}
+
+char* util_concat_path(char *url_base, char *p) {
+    sstr_t base = sstr(url_base);
+    sstr_t path;
+    if(p) {
+        path = sstr(p);
+    } else {
+        path = sstrn("", 0);
+    }
+    
+    int add_separator = 0;
+    if(base.ptr[base.length-1] == '/') {
+        if(path.ptr[0] == '/') {
+            base.length--;
+        }
+    } else {
+        if(path.length == 0 || path.ptr[0] != '/') {
+            add_separator = 1;
+        }
+    }
+    
+    sstr_t url;
+    if(add_separator) {
+        url = sstrcat(3, base, sstr("/"), path);
+    } else {
+        url = sstrcat(2, base, path);
+    }
+    
+    return url.ptr;
+}
+
+void util_set_url(DavSession *sn, char *href) {
+    sstr_t base = sstr(sn->base_url);
+    sstr_t href_str = sstr(href);
+    
+    char *base_path = util_url_path(sn->base_url);
+    base.length -= strlen(base_path);
+    
+    sstr_t url = sstrcat(2, base, href_str);
+    
+    curl_easy_setopt(sn->handle, CURLOPT_URL, url.ptr);
+    free(url.ptr);
+}
+
+char* util_path_to_url(DavSession *sn, char *path) {
+    char *space = malloc(256);
+    UcxBuffer *url = ucx_buffer_new(space, 256, UCX_BUFFER_AUTOEXTEND);
+    
+    // add base url
+    ucx_buffer_write(sn->base_url, 1, strlen(sn->base_url), url);
+    // remove trailing slash
+    ucx_buffer_seek(url, -1, SEEK_CUR);
+    
+    sstr_t p = sstr(path);
+    ssize_t ntk = 0;
+    sstr_t *tks = sstrsplit(p, S("/"), &ntk);
+    
+    for(int i=0;i<ntk;i++) {
+        sstr_t node = tks[i];
+        if(node.length > 0) {
+            char *esc = curl_easy_escape(sn->handle, node.ptr, node.length);
+            ucx_buffer_putc(url, '/');
+            ucx_buffer_write(esc, 1, strlen(esc), url);
+            curl_free(esc);
+        }
+        free(node.ptr);
+    }
+    free(tks);
+    if(path[p.length-1] == '/') {
+        ucx_buffer_putc(url, '/');
+    }
+    ucx_buffer_putc(url, 0);
+    
+    space = url->space;
+    ucx_buffer_free(url);
+    
+    return space;
+}
+
+char* util_parent_path(char *path) {
+    char *name = util_resource_name(path);
+    size_t namelen = strlen(name);
+    size_t pathlen = strlen(path);
+    size_t parentlen = pathlen - namelen;
+    char *parent = malloc(parentlen + 1);
+    memcpy(parent, path, parentlen);
+    parent[parentlen] = '\0';
+    return parent;
+}
+
+
+char* util_xml_get_text(xmlNode *elm) {
+    xmlNode *node = elm->children;
+    while(node) {
+        if(node->type == XML_TEXT_NODE) {
+            return (char*)node->content;
+        }
+        node = node->next;
+    }
+    return NULL;
+}
+
+
+char* util_base64decode(char *in) {
+    int len = 0;
+    return util_base64decode_len(in, &len);
+}
+
+char* util_base64decode_len(char* in, int *outlen) {
+    size_t len = strlen(in);
+    char *out = calloc(1, len);
+    
+    BIO* b = BIO_new_mem_buf(in, len);
+    BIO *d = BIO_new(BIO_f_base64());
+    BIO_set_flags(d, BIO_FLAGS_BASE64_NO_NL);
+    b = BIO_push(d, b);
+
+    *outlen = BIO_read(b, out, len);
+    BIO_free_all(b);
+    
+    return out;
+}
+
+char* util_base64encode(char *in, size_t len) { 
+    BIO *b;
+    BIO *e;
+    BUF_MEM *mem;
+
+    e = BIO_new(BIO_f_base64());
+    b = BIO_new(BIO_s_mem());
+    
+    e = BIO_push(e, b);
+    BIO_write(e, in, len);
+    BIO_flush(e);
+    
+    BIO_get_mem_ptr(e, &mem);
+    char *out = malloc(mem->length);
+    memcpy(out, mem->data, mem->length -1);
+    out[mem->length - 1] = '\0';
+
+    BIO_free_all(e);
+
+    return out;
+}
+
+char* util_encrypt_str(DavSession *sn, char *str, char *key) {
+    DavKey *k = dav_context_get_key(sn->context, key);
+    if(!k) {
+        // TODO: session error
+        return NULL;
+    }
+    
+    char *enc_str = aes_encrypt(str, k);
+    char *ret_str = dav_session_strdup(sn, enc_str);
+    free(enc_str);
+    return ret_str;
+}
+
+char* util_decrypt_str(DavSession *sn, char *str, char *key) {
+    DavKey *k = dav_context_get_key(sn->context, key);
+    if(!k) {
+        // TODO: session error
+        return NULL;
+    }
+    
+    char *dec_str = aes_decrypt(str, k);
+    char *ret_str = dav_session_strdup(sn, dec_str);
+    free(dec_str);
+    return ret_str;
+}
+
+char* util_random_str() {
+    unsigned char *str = malloc(25);
+    str[24] = '\0';
+    
+    sstr_t t = S(
+            "01234567890"
+            "abcdefghijklmnopqrstuvwxyz"
+            "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+    const unsigned char *table = (const unsigned char*)t.ptr;
+    
+    RAND_pseudo_bytes(str, 24);
+    for(int i=0;i<24;i++) {
+        int c = str[i] % t.length;
+        str[i] = table[c];
+    }
+    
+    return (char*)str;
+}
+
+/*
+ * gets a substring from 0 to the appearance of the token
+ * tokens are separated by space
+ * sets sub to the substring and returns the remaining string
+ */
+sstr_t util_getsubstr_until_token(sstr_t str, sstr_t token, sstr_t *sub) {  
+    int i;
+    int token_start = -1;
+    int token_end = -1;
+    for(i=0;i<=str.length;i++) {
+        int c;
+        if(i == str.length) {
+            c = ' ';
+        } else {
+            c = str.ptr[i];
+        }
+        if(c < 33) {
+            if(token_start != -1) {
+                token_end = i;
+                size_t len = token_end - token_start;
+                sstr_t tk = sstrsubsl(str, token_start, len);
+                //printf("token: {%.*s}\n", token.length, token.ptr);
+                if(!sstrcmp(tk, token)) {
+                    *sub = sstrtrim(sstrsubsl(str, 0, token_start));
+                    break;
+                }
+                token_start = -1;
+                token_end = -1;
+            }
+        } else {
+            if(token_start == -1) {
+                token_start = i;
+            }
+        }
+    }
+    
+    if(i < str.length) {
+        return sstrtrim(sstrsubs(str, i));
+    } else {
+        str.ptr = NULL;
+        str.length = 0;
+        return str;
+    }
+}