restoring cookie of session
[src/app-framework-binder.git] / src / afb-hreq.c
index 1611467..9984cbc 100644 (file)
  * limitations under the License.
  */
 
+#define USE_MAGIC_MIME_TYPE
 #define _GNU_SOURCE
-#include <microhttpd.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
 #include <assert.h>
-#include <poll.h>
+#include <errno.h>
+#include <fcntl.h>
 #include <sys/stat.h>
 
-#include "../include/local-def.h"
+#include <microhttpd.h>
+#include <json.h>
+
+#if defined(USE_MAGIC_MIME_TYPE)
+#include <magic.h>
+#endif
+
 #include "afb-method.h"
 #include "afb-req-itf.h"
 #include "afb-hreq.h"
+#include "session.h"
+#include "verbose.h"
+
+#define SIZE_RESPONSE_BUFFER   8000
 
 static char empty_string[] = "";
 
+static const char uuid_header[] = "x-afb-uuid";
+static const char uuid_arg[] = "uuid";
+static const char uuid_cookie[] = "uuid";
+
+static const char token_header[] = "x-afb-token";
+static const char token_arg[] = "token";
+static const char token_cookie[] = "token";
+
+static char *cookie_name = NULL;
+static char *cookie_setter = NULL;
+
 struct hreq_data {
        struct hreq_data *next;
        char *key;
-       int file;
        size_t length;
        char *value;
+       char *path;
 };
 
+static struct json_object *req_json(struct afb_hreq *hreq);
+static struct afb_arg req_get(struct afb_hreq *hreq, const char *name);
+static void req_fail(struct afb_hreq *hreq, const char *status, const char *info);
+static void req_success(struct afb_hreq *hreq, json_object *obj, const char *info);
+static const char *req_raw(struct afb_hreq *hreq, size_t *size);
+static void req_send(struct afb_hreq *hreq, char *buffer, size_t size);
+static int req_session_create(struct afb_hreq *hreq);
+static int req_session_check(struct afb_hreq *hreq, int refresh);
+static void req_session_close(struct afb_hreq *hreq);
+
 static const struct afb_req_itf afb_hreq_itf = {
-       .argument = (void*)afb_hreq_get_argument,
-       .is_argument_file = (void*)afb_hreq_is_argument_a_file,
-       .iterate_arguments = (void*)afb_hreq_iterate_arguments
+       .json = (void*)req_json,
+       .get = (void*)req_get,
+       .success = (void*)req_success,
+       .fail = (void*)req_fail,
+       .raw = (void*)req_raw,
+       .send = (void*)req_send,
+       .session_create = (void*)req_session_create,
+       .session_check = (void*)req_session_check,
+       .session_close = (void*)req_session_close
 };
 
 static struct hreq_data *get_data(struct afb_hreq *hreq, const char *key, int create)
 {
        struct hreq_data *data = hreq->data;
-       if (key == NULL)
-               key = empty_string;
        while (data != NULL) {
                if (!strcasecmp(data->key, key))
                        return data;
@@ -105,8 +145,160 @@ static int validsubpath(const char *subpath)
        return 1;
 }
 
+#if defined(USE_MAGIC_MIME_TYPE)
+
+#if !defined(MAGIC_DB)
+#define MAGIC_DB "/usr/share/misc/magic.mgc"
+#endif
+
+static void afb_hreq_reply_v(struct afb_hreq *hreq, unsigned status, struct MHD_Response *response, va_list args)
+{
+       char *cookie;
+       const char *k, *v;
+       k = va_arg(args, const char *);
+       while (k != NULL) {
+               v = va_arg(args, const char *);
+               MHD_add_response_header(response, k, v);
+               k = va_arg(args, const char *);
+       }
+       if (hreq->context != NULL && asprintf(&cookie, cookie_setter, hreq->context->uuid)) {
+               MHD_add_response_header(response, MHD_HTTP_HEADER_SET_COOKIE, cookie);
+               free(cookie);
+       }
+       MHD_queue_response(hreq->connection, status, response);
+       MHD_destroy_response(response);
+}
+
+void afb_hreq_reply(struct afb_hreq *hreq, unsigned status, struct MHD_Response *response, ...)
+{
+       va_list args;
+       va_start(args, response);
+       afb_hreq_reply_v(hreq, status, response, args);
+       va_end(args);
+}
+
+void afb_hreq_reply_empty(struct afb_hreq *hreq, unsigned status, ...)
+{
+       va_list args;
+       va_start(args, status);
+       afb_hreq_reply_v(hreq, status, MHD_create_response_from_buffer(0, NULL, MHD_RESPMEM_PERSISTENT), args);
+       va_end(args);
+}
+
+void afb_hreq_reply_static(struct afb_hreq *hreq, unsigned status, size_t size, char *buffer, ...)
+{
+       va_list args;
+       va_start(args, buffer);
+       afb_hreq_reply_v(hreq, status, MHD_create_response_from_buffer((unsigned)size, buffer, MHD_RESPMEM_PERSISTENT), args);
+       va_end(args);
+}
+
+void afb_hreq_reply_copy(struct afb_hreq *hreq, unsigned status, size_t size, char *buffer, ...)
+{
+       va_list args;
+       va_start(args, buffer);
+       afb_hreq_reply_v(hreq, status, MHD_create_response_from_buffer((unsigned)size, buffer, MHD_RESPMEM_MUST_COPY), args);
+       va_end(args);
+}
+
+void afb_hreq_reply_free(struct afb_hreq *hreq, unsigned status, size_t size, char *buffer, ...)
+{
+       va_list args;
+       va_start(args, buffer);
+       afb_hreq_reply_v(hreq, status, MHD_create_response_from_buffer((unsigned)size, buffer, MHD_RESPMEM_MUST_FREE), args);
+       va_end(args);
+}
+
+static magic_t lazy_libmagic()
+{
+       static int done = 0;
+       static magic_t result = NULL;
+
+       if (!done) {
+               done = 1;
+               /* MAGIC_MIME tells magic to return a mime of the file,
+                        but you can specify different things */
+               if (verbosity)
+                       printf("Loading mimetype default magic database\n");
+
+               result = magic_open(MAGIC_MIME_TYPE);
+               if (result == NULL) {
+                       fprintf(stderr,"ERROR: unable to initialize magic library\n");
+               }
+               /* Warning: should not use NULL for DB
+                               [libmagic bug wont pass efence check] */
+               else if (magic_load(result, MAGIC_DB) != 0) {
+                       fprintf(stderr,"cannot load magic database - %s\n",
+                                       magic_error(result));
+                       magic_close(result);
+                       result = NULL;
+               }
+       }
+
+       return result;
+}
+
+static const char *magic_mimetype_fd(int fd)
+{
+       magic_t lib = lazy_libmagic();
+       return lib ? magic_descriptor(lib, fd) : NULL;
+}
+
+#endif
+
+static const char *mimetype_fd_name(int fd, const char *filename)
+{
+       const char *result = NULL;
+
+#if defined(INFER_EXTENSION)
+       const char *extension = strrchr(filename, '.');
+       if (extension) {
+               static const char *const known[][2] = {
+                       { ".js", "text/javascript" },
+                       { ".html", "text/html" },
+                       { NULL, NULL }
+               };
+               int i = 0;
+               while (known[i][0]) {
+                       if (!strcasecmp(extension, known[i][0])) {
+                               result = known[i][1];
+                               break;
+                       }
+                       i++;
+               }
+       }
+#endif
+#if defined(USE_MAGIC_MIME_TYPE)
+       if (result == NULL)
+               result = magic_mimetype_fd(fd);
+#endif
+       return result;
+}
+
+void afb_hreq_free(struct afb_hreq *hreq)
+{
+       struct hreq_data *data;
+       if (hreq != NULL) {
+               if (hreq->postform != NULL)
+                       MHD_destroy_post_processor(hreq->postform);
+               for (data = hreq->data; data; data = hreq->data) {
+                       hreq->data = data->next;
+                       if (data->path) {
+                               unlink(data->path);
+                               free(data->path);
+                       }
+                       free(data->key);
+                       free(data->value);
+                       free(data);
+               }
+               ctxClientPut(hreq->context);
+               json_object_put(hreq->json);
+               free(hreq);
+       }
+}
+
 /*
- * Removes the 'prefix' of 'length' frome the tail of 'hreq'
+ * Removes the 'prefix' of 'length' from the tail of 'hreq'
  * if and only if the prefix exists and is terminated by a leading
  * slash
  */
@@ -134,20 +326,7 @@ int afb_hreq_valid_tail(struct afb_hreq *hreq)
 
 void afb_hreq_reply_error(struct afb_hreq *hreq, unsigned int status)
 {
-       char *buffer;
-       int length;
-       struct MHD_Response *response;
-
-       length = asprintf(&buffer, "<html><body>error %u</body></html>", status);
-       if (length > 0)
-               response = MHD_create_response_from_buffer((unsigned)length, buffer, MHD_RESPMEM_MUST_FREE);
-       else {
-               buffer = "<html><body>error</body></html>";
-               response = MHD_create_response_from_buffer(strlen(buffer), buffer, MHD_RESPMEM_PERSISTENT);
-       }
-       if (!MHD_queue_response(hreq->connection, status, response))
-               fprintf(stderr, "Failed to reply error code %u", status);
-       MHD_destroy_response(response);
+       afb_hreq_reply_empty(hreq, status, NULL);
 }
 
 int afb_hreq_reply_file_if_exist(struct afb_hreq *hreq, int dirfd, const char *filename)
@@ -159,14 +338,23 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *hreq, int dirfd, const char *f
        char etag[1 + 2 * sizeof(int)];
        const char *inm;
        struct MHD_Response *response;
+       const char *mimetype;
 
        /* Opens the file or directory */
-       fd = openat(dirfd, filename, O_RDONLY);
-       if (fd < 0) {
-               if (errno == ENOENT)
-                       return 0;
-               afb_hreq_reply_error(hreq, MHD_HTTP_FORBIDDEN);
-               return 1;
+       if (filename[0]) {
+               fd = openat(dirfd, filename, O_RDONLY);
+               if (fd < 0) {
+                       if (errno == ENOENT)
+                               return 0;
+                       afb_hreq_reply_error(hreq, MHD_HTTP_FORBIDDEN);
+                       return 1;
+               }
+       } else {
+               fd = dup(dirfd);
+               if (fd < 0) {
+                       afb_hreq_reply_error(hreq, MHD_HTTP_INTERNAL_SERVER_ERROR);
+                       return 1;
+               }
        }
 
        /* Retrieves file's status */
@@ -178,15 +366,24 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *hreq, int dirfd, const char *f
 
        /* serve directory */
        if (S_ISDIR(st.st_mode)) {
-               if (hreq->url[hreq->lenurl - 1] != '/') {
-                       /* the redirect is needed for reliability of relative path */
-                       char *tourl = alloca(hreq->lenurl + 2);
-                       memcpy(tourl, hreq->url, hreq->lenurl);
-                       tourl[hreq->lenurl] = '/';
-                       tourl[hreq->lenurl + 1] = 0;
-                       rc = afb_hreq_redirect_to(hreq, tourl);
-               } else {
-                       rc = afb_hreq_reply_file_if_exist(hreq, fd, "index.html");
+               static const char *indexes[] = { "index.html", NULL };
+               int i = 0;
+               rc = 0;
+               while (indexes[i] != NULL) {
+                       if (faccessat(fd, indexes[i], R_OK, 0) == 0) {
+                               if (hreq->url[hreq->lenurl - 1] != '/') {
+                                       /* the redirect is needed for reliability of relative path */
+                                       char *tourl = alloca(hreq->lenurl + 2);
+                                       memcpy(tourl, hreq->url, hreq->lenurl);
+                                       tourl[hreq->lenurl] = '/';
+                                       tourl[hreq->lenurl + 1] = 0;
+                                       rc = afb_hreq_redirect_to(hreq, tourl);
+                               } else {
+                                       rc = afb_hreq_reply_file_if_exist(hreq, fd, indexes[i]);
+                               }
+                               break;
+                       }
+                       i++;
                }
                close(fd);
                return rc;
@@ -214,7 +411,7 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *hreq, int dirfd, const char *f
        if (inm && 0 == strcmp(inm, etag)) {
                /* etag ok, return NOT MODIFIED */
                close(fd);
-               if (verbose)
+               if (verbosity)
                        fprintf(stderr, "Not Modified: [%s]\n", filename);
                response = MHD_create_response_from_buffer(0, empty_string, MHD_RESPMEM_PERSISTENT);
                status = MHD_HTTP_NOT_MODIFIED;
@@ -230,21 +427,17 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *hreq, int dirfd, const char *f
                response = MHD_create_response_from_fd((size_t) st.st_size, fd);
                status = MHD_HTTP_OK;
 
-#if defined(USE_MAGIC_MIME_TYPE)
                /* set the type */
-               if (hreq->session->magic) {
-                       const char *mimetype = magic_descriptor(hreq->session->magic, fd);
-                       if (mimetype != NULL)
-                               MHD_add_response_header(response, MHD_HTTP_HEADER_CONTENT_TYPE, mimetype);
-               }
-#endif
+               mimetype = mimetype_fd_name(fd, filename);
+               if (mimetype != NULL)
+                       MHD_add_response_header(response, MHD_HTTP_HEADER_CONTENT_TYPE, mimetype);
        }
 
        /* fills the value and send */
-       MHD_add_response_header(response, MHD_HTTP_HEADER_CACHE_CONTROL, hreq->session->cacheTimeout);
-       MHD_add_response_header(response, MHD_HTTP_HEADER_ETAG, etag);
-       MHD_queue_response(hreq->connection, status, response);
-       MHD_destroy_response(response);
+       afb_hreq_reply(hreq, status, response,
+                       MHD_HTTP_HEADER_CACHE_CONTROL, hreq->cacheTimeout,
+                       MHD_HTTP_HEADER_ETAG, etag,
+                       NULL);
        return 1;
 }
 
@@ -258,13 +451,9 @@ int afb_hreq_reply_file(struct afb_hreq *hreq, int dirfd, const char *filename)
 
 int afb_hreq_redirect_to(struct afb_hreq *hreq, const char *url)
 {
-       struct MHD_Response *response;
-
-       response = MHD_create_response_from_buffer(0, empty_string, MHD_RESPMEM_PERSISTENT);
-       MHD_add_response_header(response, MHD_HTTP_HEADER_LOCATION, url);
-       MHD_queue_response(hreq->connection, MHD_HTTP_MOVED_PERMANENTLY, response);
-       MHD_destroy_response(response);
-       if (verbose)
+       afb_hreq_reply_static(hreq, MHD_HTTP_MOVED_PERMANENTLY, 0, NULL,
+                       MHD_HTTP_HEADER_LOCATION, url, NULL);
+       if (verbosity)
                fprintf(stderr, "redirect from [%s] to [%s]\n", hreq->url, url);
        return 1;
 }
@@ -285,23 +474,11 @@ const char *afb_hreq_get_header(struct afb_hreq *hreq, const char *name)
        return MHD_lookup_connection_value(hreq->connection, MHD_HEADER_KIND, name);
 }
 
-void afb_hreq_post_end(struct afb_hreq *hreq)
-{
-       struct hreq_data *data = hreq->data;
-       while(data) {
-               if (data->file > 0) {
-                       close(data->file);
-                       data->file = -1;
-               }
-               data = data->next;
-       }
-}
-
 int afb_hreq_post_add(struct afb_hreq *hreq, const char *key, const char *data, size_t size)
 {
        void *p;
        struct hreq_data *hdat = get_data(hreq, key, 1);
-       if (hdat->file) {
+       if (hdat->path != NULL) {
                return 0;
        }
        p = realloc(hdat->value, hdat->length + size + 1);
@@ -315,78 +492,239 @@ int afb_hreq_post_add(struct afb_hreq *hreq, const char *key, const char *data,
        return 1;
 }
 
+static int opentempfile(char **path)
+{
+       int fd;
+       char *fname;
+
+       fname = strdup("XXXXXX"); /* TODO improve the path */
+       if (fname == NULL)
+               return -1;
+
+       fd = mkostemp(fname, O_CLOEXEC|O_WRONLY);
+       if (fd < 0)
+               free(fname);
+       else
+               *path = fname;
+       return fd;
+}
+
 int afb_hreq_post_add_file(struct afb_hreq *hreq, const char *key, const char *file, const char *data, size_t size)
 {
+       int fd;
+       ssize_t sz;
        struct hreq_data *hdat = get_data(hreq, key, 1);
 
-       /* continuation with reopening */
-       if (hdat->file < 0) {
-               hdat->file = open(hdat->value, O_WRONLY|O_APPEND);
-               if (hdat->file == 0) {
-                       hdat->file = dup(0);
-                       close(0);
-               }
-               if (hdat->file <= 0)
+       if (hdat->value == NULL) {
+               hdat->value = strdup(file);
+               if (hdat->value == NULL)
                        return 0;
+               fd = opentempfile(&hdat->path);
+       } else if (strcmp(hdat->value, file) || hdat->path == NULL) {
+               return 0;
+       } else {
+               fd = open(hdat->path, O_WRONLY|O_APPEND);
        }
-       if (hdat->file > 0) {
-               write(hdat->file, data, size);
-               return 1;
+       if (fd < 0)
+               return 0;
+       while (size) {
+               sz = write(fd, data, size);
+               if (sz >= 0) {
+                       hdat->length += (size_t)sz;
+                       size -= (size_t)sz;
+                       data += sz;
+               } else if (errno != EINTR)
+                       break;
        }
+       close(fd);
+       return !size;
+}
 
-       /* creation */
-       /* TODO */
-       return 0;
-       
+struct afb_req afb_hreq_to_req(struct afb_hreq *hreq)
+{
+       return (struct afb_req){ .itf = &afb_hreq_itf, .data = hreq };
 }
 
-int afb_hreq_is_argument_a_file(struct afb_hreq *hreq, const char *key)
+static struct afb_arg req_get(struct afb_hreq *hreq, const char *name)
 {
-       struct hreq_data *hdat = get_data(hreq, key, 0);
-       return hdat != NULL && hdat->file != 0;
+       struct hreq_data *hdat = get_data(hreq, name, 0);
+       if (hdat)
+               return (struct afb_arg){
+                       .name = hdat->key,
+                       .value = hdat->value,
+                       .path = hdat->path
+               };
+               
+       return (struct afb_arg){
+               .name = name,
+               .value = MHD_lookup_connection_value(hreq->connection, MHD_GET_ARGUMENT_KIND, name),
+               .path = NULL
+       };
 }
 
+static int _iterargs_(struct json_object *obj, enum MHD_ValueKind kind, const char *key, const char *value)
+{
+       json_object_object_add(obj, key, value ? json_object_new_string(value) : NULL);
+       return 1;
+}
 
-struct afb_req afb_hreq_to_req(struct afb_hreq *hreq)
+static struct json_object *req_json(struct afb_hreq *hreq)
 {
-       return (struct afb_req){ .itf = &afb_hreq_itf, .data = hreq };
+       struct hreq_data *hdat;
+       struct json_object *obj, *val;
+
+       obj = hreq->json;
+       if (obj == NULL) {
+               hreq->json = obj = json_object_new_object();
+               if (obj == NULL) {
+               } else {
+                       MHD_get_connection_values (hreq->connection, MHD_GET_ARGUMENT_KIND, (void*)_iterargs_, obj);
+                       for (hdat = hreq->data ; hdat ; hdat = hdat->next) {
+                               if (hdat->path == NULL)
+                                       val = hdat->value ? json_object_new_string(hdat->value) : NULL;
+                               else {
+                                       val = json_object_new_object();
+                                       if (val == NULL) {
+                                       } else {
+                                               json_object_object_add(val, "file", json_object_new_string(hdat->value));
+                                               json_object_object_add(val, "path", json_object_new_string(hdat->path));
+                                       }
+                               }
+                               json_object_object_add(obj, hdat->key, val);
+                       }
+               }
+       }
+       return obj;
 }
 
-struct iterator_data
+static const char *req_raw(struct afb_hreq *hreq, size_t *size)
 {
-       struct afb_hreq *hreq;
-       int (*iterator)(void *closure, const char *key, const char *value, int isfile);
-       void *closure;
-};
+       const char *result = json_object_get_string(req_json(hreq));
+       *size = result ? strlen(result) : 0;
+       return result;
+}
 
-static int itargs(struct iterator_data *id, enum MHD_ValueKind kind, const char *key, const char *value)
+static void req_send(struct afb_hreq *hreq, char *buffer, size_t size)
 {
-       if (get_data(id->hreq, key, 0))
-               return 1;
-       return id->iterator(id->closure, key, value, 0);
+       afb_hreq_reply_free(hreq, MHD_HTTP_OK, size, buffer, NULL);
 }
 
-void afb_hreq_iterate_arguments(struct afb_hreq *hreq, int (*iterator)(void *closure, const char *key, const char *value, int isfile), void *closure)
+static ssize_t send_json_cb(json_object *obj, uint64_t pos, char *buf, size_t max)
 {
-       struct iterator_data id = { .hreq = hreq, .iterator = iterator, .closure = closure };
-       struct hreq_data *data = hreq->data;
-       while (data) {
-               if (!iterator(closure, data->key, data->value, !!data->file))
-                       return;
-               data = data->next;
+       ssize_t len = stpncpy(buf, json_object_to_json_string(obj)+pos, max) - buf;
+       return len ? : -1;
+}
+
+static void req_reply(struct afb_hreq *hreq, unsigned retcode, const char *status, const char *info, json_object *resp)
+{
+       json_object *root, *request;
+       struct MHD_Response *response;
+
+       root = json_object_new_object();
+       json_object_object_add(root, "jtype", json_object_new_string("afb-reply"));
+       request = json_object_new_object();
+       json_object_object_add(root, "request", request);
+       json_object_object_add(request, "status", json_object_new_string(status));
+       if (info)
+               json_object_object_add(request, "info", json_object_new_string(info));
+       if (resp)
+               json_object_object_add(root, "response", resp);
+       if (hreq->context) {
+               json_object_object_add(request, uuid_arg, json_object_new_string(hreq->context->uuid));
+               json_object_object_add(request, token_arg, json_object_new_string(hreq->context->token));
        }
-       MHD_get_connection_values (hreq->connection, MHD_GET_ARGUMENT_KIND, (void*)itargs, &id);
+
+       response = MHD_create_response_from_callback(MHD_SIZE_UNKNOWN, SIZE_RESPONSE_BUFFER, (void*)send_json_cb, root, (void*)json_object_put);
+       afb_hreq_reply(hreq, retcode, response, NULL);
 }
 
-void afb_hreq_drop_data(struct afb_hreq *hreq)
+static void req_fail(struct afb_hreq *hreq, const char *status, const char *info)
 {
-       struct hreq_data *data = hreq->data;
-       while (data) {
-               hreq->data = data->next;
-               free(data->key);
-               free(data->value);
-               free(data);
-               data = hreq->data;
+       req_reply(hreq, MHD_HTTP_OK, status, info, NULL);
+}
+
+static void req_success(struct afb_hreq *hreq, json_object *obj, const char *info)
+{
+       req_reply(hreq, MHD_HTTP_OK, "success", info, obj);
+}
+
+struct AFB_clientCtx *afb_hreq_context(struct afb_hreq *hreq)
+{
+       const char *uuid;
+
+       if (hreq->context == NULL) {
+               uuid = afb_hreq_get_header(hreq, uuid_header);
+               if (uuid == NULL)
+                       uuid = afb_hreq_get_argument(hreq, uuid_arg);
+               if (uuid == NULL)
+                       uuid = afb_hreq_get_cookie(hreq, cookie_name);
+               hreq->context = ctxClientGetForUuid(uuid);
        }
+       return hreq->context;
 }
 
+static int req_session_create(struct afb_hreq *hreq)
+{
+       struct AFB_clientCtx *context = afb_hreq_context(hreq);
+       if (context == NULL)
+               return 0;
+       if (context->created)
+               return 0;
+       return req_session_check(hreq, 1);
+}
+
+static int req_session_check(struct afb_hreq *hreq, int refresh)
+{
+       const char *token;
+
+       struct AFB_clientCtx *context = afb_hreq_context(hreq);
+
+       if (context == NULL)
+               return 0;
+
+       token = afb_hreq_get_header(hreq, token_header);
+       if (token == NULL)
+               token = afb_hreq_get_argument(hreq, token_arg);
+       if (token == NULL)
+               token = afb_hreq_get_cookie(hreq, token_cookie);
+       if (token == NULL)
+               return 0;
+
+       if (!ctxTokenCheck (context, token))
+               return 0;
+
+       if (refresh) {
+               ctxTokenNew (context);
+       }
+
+       return 1;
+}
+
+static void req_session_close(struct afb_hreq *hreq)
+{
+       struct AFB_clientCtx *context = afb_hreq_context(hreq);
+       if (context != NULL)
+               ctxClientClose(context);
+}
+
+int afb_hreq_init_cookie(int port, const char *path, int maxage)
+{
+       int rc;
+
+       free(cookie_name);
+       free(cookie_setter);
+       cookie_name = NULL;
+       cookie_setter = NULL;
+
+       path = path ? : "/";
+       rc = asprintf(&cookie_name, "x-afb-uuid-%d", port);
+       if (rc < 0)
+               return 0;
+       rc = asprintf(&cookie_setter, "%s=%%s; Path=%s; Max-Age=%d; HttpOnly",
+                       cookie_name, path, maxage);
+       if (rc < 0)
+               return 0;
+       return 1;
+}
+
+