libidav/jmapsession.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2026 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 "jmapsession.h"
#include "session.h"

#include <cx/buffer.h>

static void jm_session_curl_destructor(CURL *handle) {
    curl_easy_cleanup(handle);
}

JMAPSession* jmap_session_new_with_user(const char *session_url, const char *user, const char *password) {
    CURL *handle = curl_easy_init();
    if(!handle) {
        return NULL;
    }
    curl_easy_setopt(handle, CURLOPT_FOLLOWLOCATION, 1L);
    
    if(user && password) {
        if(jm_session_set_auth(handle, user, password)) {
            curl_easy_cleanup(handle);
            return NULL;
        }
    }
    
    CxMempool *mp = cxMempoolCreate(256, CX_MEMPOOL_TYPE_SIMPLE);
    if(!mp) {
        curl_easy_cleanup(handle);
        return NULL;
    }
    cxMempoolRegister(mp, handle, (cx_destructor_func)jm_session_curl_destructor);
    
    JMAPSession *sn = cxZalloc(mp->allocator, sizeof(JMAPSession));
    if(!sn) {
        cxMempoolFree(mp);
        return NULL;
    }
    
    sn->handle = handle;
    sn->mp = mp;
    
    CxJsonValue *sessionValue = jm_query_session(sn, session_url);
    if(!sessionValue) {
        cxMempoolFree(mp);
        return NULL;
    }
    sn->obj = sessionValue;
    
    CxJsonValue *username = cxJsonObjGet(sessionValue, "username");
    CxJsonValue *apiUrl = cxJsonObjGet(sessionValue, "apiUrl");
    CxJsonValue *downloadUrl = cxJsonObjGet(sessionValue, "downloadUrl");
    CxJsonValue *uploadUrl = cxJsonObjGet(sessionValue, "uploadUrl");
    
    if(cxJsonIsString(username)) {
        sn->username = cx_strdup_a(mp->allocator, username->string.ptr).ptr;
    }
    if(cxJsonIsString(apiUrl)) {
        sn->apiUrl = cx_strdup_a(mp->allocator, apiUrl->string.ptr).ptr;
    }
    if(cxJsonIsString(downloadUrl)) {
        sn->downloadUrl = cx_strdup_a(mp->allocator, downloadUrl->string.ptr).ptr;
    }
    if(cxJsonIsString(uploadUrl)) {
        sn->uploadUrl = cx_strdup_a(mp->allocator, uploadUrl->string.ptr).ptr;
    }
    
    return sn;
}

int jm_session_set_auth(CURL *handle, const char *user, const char *password) {
    return dav_curl_set_auth(handle, cx_str(user), cx_str(password));
}

CxJsonValue* jm_query_session(JMAPSession *sn, const char *url) {
    curl_easy_setopt(sn->handle, CURLOPT_URL, url);
    
    CxBuffer *response = cxBufferCreate(NULL, NULL, 1024, CX_BUFFER_AUTO_EXTEND|CX_BUFFER_FREE_CONTENTS);
    if(!response) {
        return NULL;
    }
    
    curl_easy_setopt(sn->handle, CURLOPT_WRITEFUNCTION, cxBufferWrite);
    curl_easy_setopt(sn->handle, CURLOPT_WRITEDATA, response);
    
    CxJsonValue *json = NULL;
    CURLcode ret = curl_easy_perform(sn->handle);
    long http_status;
    curl_easy_getinfo(sn->handle, CURLINFO_RESPONSE_CODE, &http_status);
    if(ret == CURLE_OK) {
        if(http_status >= 200 && http_status <= 299) {
            (void)cx_json_from_string(sn->mp->allocator, cx_strn(response->space, response->size), &json);
        }
    }
    cxBufferFree(response);
    
    return json;
}