splitting rest-api in two parts
[src/app-framework-binder.git] / src / http-svc.c
index 315de12..f281bbf 100644 (file)
 
 #include "../include/local-def.h"
 #include "afb-method.h"
+#include "afb-hreq.h"
+#include "afb-websock.h"
 
 
-struct afb_hreq_post {
-       const char *upload_data;
-       size_t *upload_data_size;
-};
-
-struct afb_hreq {
-       AFB_session *session;
-       struct MHD_Connection *connection;
-       enum afb_method method;
-       const char *url;
-       size_t lenurl;
-       const char *tail;
-       size_t lentail;
-       struct afb_hreq **recorder;
-       int (*post_handler) (struct afb_hreq *, struct afb_hreq_post *);
-       int (*post_completed) (struct afb_hreq *, struct afb_hreq_post *);
-       void *post_data;
-};
-
-struct afb_req_handler {
-       struct afb_req_handler *next;
+struct afb_hsrv_handler {
+       struct afb_hsrv_handler *next;
        const char *prefix;
        size_t length;
        int (*handler) (struct afb_hreq *, struct afb_hreq_post *, void *);
@@ -53,109 +36,22 @@ struct afb_req_handler {
        int priority;
 };
 
-static char empty_string[1] = "";
-
-/* a valid subpath is a relative path not looking deeper than root using .. */
-static int validsubpath(const char *subpath)
-{
-       int l = 0, i = 0;
-
-       while (subpath[i]) {
-               switch (subpath[i++]) {
-               case '.':
-                       if (!subpath[i])
-                               break;
-                       if (subpath[i] == '/') {
-                               i++;
-                               break;
-                       }
-                       if (subpath[i++] == '.') {
-                               if (!subpath[i]) {
-                                       if (--l < 0)
-                                               return 0;
-                                       break;
-                               }
-                               if (subpath[i++] == '/') {
-                                       if (--l < 0)
-                                               return 0;
-                                       break;
-                               }
-                       }
-               default:
-                       while (subpath[i] && subpath[i] != '/')
-                               i++;
-                       l++;
-               case '/':
-                       break;
-               }
-       }
-       return 1;
-}
-
-/*
- * Removes the 'prefix' of 'length' frome the tail of 'request'
- * if and only if the prefix exists and is terminated by a leading
- * slash
- */
-int afb_req_unprefix(struct afb_hreq *request, const char *prefix, size_t length)
-{
-       /* check the prefix ? */
-       if (length > request->lentail || (request->tail[length] && request->tail[length] != '/')
-           || memcmp(prefix, request->tail, length))
-               return 0;
-
-       /* removes successives / */
-       while (length < request->lentail && request->tail[length + 1] == '/')
-               length++;
-
-       /* update the tail */
-       request->lentail -= length;
-       request->tail += length;
-       return 1;
-}
-
-int afb_req_valid_tail(struct afb_hreq *request)
-{
-       return validsubpath(request->tail);
-}
-
-void afb_req_reply_error(struct afb_hreq *request, 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(request->connection, status, response))
-               fprintf(stderr, "Failed to reply error code %u", status);
-       MHD_destroy_response(response);
-}
-
-int afb_request_redirect_to(struct afb_hreq *request, const char *url)
-{
-       struct MHD_Response *response;
-
-       response = MHD_create_response_from_buffer(0, empty_string, MHD_RESPMEM_PERSISTENT);
-       MHD_add_response_header(response, "Location", url);
-       MHD_queue_response(request->connection, MHD_HTTP_MOVED_PERMANENTLY, response);
-       MHD_destroy_response(response);
-       if (verbose)
-               fprintf(stderr, "redirect from [%s] to [%s]\n", request->url, url);
-       return 1;
-}
+struct afb_diralias {
+       const char *alias;
+       const char *directory;
+       size_t lendir;
+       int dirfd;
+};
 
-int afb_request_one_page_api_redirect(struct afb_hreq *request, struct afb_hreq_post *post, void *data)
+int afb_hreq_one_page_api_redirect(
+               struct afb_hreq *hreq,
+               struct afb_hreq_post *post,
+               void *data)
 {
        size_t plen;
        char *url;
 
-       if (request->lentail >= 2 && request->tail[1] == '#')
+       if (hreq->lentail >= 2 && hreq->tail[1] == '#')
                return 0;
        /*
         * Here we have for example:
@@ -166,20 +62,23 @@ int afb_request_one_page_api_redirect(struct afb_hreq *request, struct afb_hreq_
         *
         * Let compute plen that include the / at end (for "/pre/")
         */
-       plen = request->lenurl - request->lentail + 1;
-       url = alloca(request->lenurl + 3);
-       memcpy(url, request->url, plen);
+       plen = hreq->lenurl - hreq->lentail + 1;
+       url = alloca(hreq->lenurl + 3);
+       memcpy(url, hreq->url, plen);
        url[plen++] = '#';
        url[plen++] = '!';
-       memcpy(&url[plen], &request->tail[1], request->lentail);
-       return afb_request_redirect_to(request, url);
+       memcpy(&url[plen], &hreq->tail[1], hreq->lentail);
+       return afb_hreq_redirect_to(hreq, url);
 }
 
-struct afb_req_handler *afb_req_handler_new(struct afb_req_handler *head, const char *prefix,
-                                           int (*handler) (struct afb_hreq *, struct afb_hreq_post *, void *),
-                                           void *data, int priority)
+struct afb_hsrv_handler *afb_hsrv_handler_new(
+               struct afb_hsrv_handler *head,
+               const char *prefix,
+               int (*handler) (struct afb_hreq *, struct afb_hreq_post *, void *),
+               void *data,
+               int priority)
 {
-       struct afb_req_handler *link, *iter, *previous;
+       struct afb_hsrv_handler *link, *iter, *previous;
        size_t length;
 
        /* get the length of the prefix without its leading / */
@@ -213,145 +112,51 @@ struct afb_req_handler *afb_req_handler_new(struct afb_req_handler *head, const
        return head;
 }
 
-int afb_req_add_handler(AFB_session * session, const char *prefix,
-                       int (*handler) (struct afb_hreq *, struct afb_hreq_post *, void *), void *data, int priority)
+int afb_req_add_handler(
+               AFB_session * session,
+               const char *prefix,
+               int (*handler) (struct afb_hreq *, struct afb_hreq_post *, void *),
+               void *data,
+               int priority)
 {
-       struct afb_req_handler *head;
+       struct afb_hsrv_handler *head;
 
-       head = afb_req_handler_new(session->handlers, prefix, handler, data, priority);
+       head = afb_hsrv_handler_new(session->handlers, prefix, handler, data, priority);
        if (head == NULL)
                return 0;
        session->handlers = head;
        return 1;
 }
 
-static int relay_to_doRestApi(struct afb_hreq *request, struct afb_hreq_post *post, void *data)
+static int relay_to_doRestApi(struct afb_hreq *hreq, struct afb_hreq_post *post, void *data)
 {
-       return doRestApi(request->connection, request->session, &request->tail[1], get_method_name(request->method),
-                        post->upload_data, post->upload_data_size, (void **)request->recorder);
-}
-
-static int afb_req_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char *filename)
-{
-       int rc;
-       int fd;
-       unsigned int status;
-       struct stat st;
-       char etag[1 + 2 * sizeof(int)];
-       const char *inm;
-       struct MHD_Response *response;
-
-       /* Opens the file or directory */
-       fd = openat(dirfd, filename, O_RDONLY);
-       if (fd < 0) {
-               if (errno == ENOENT)
-                       return 0;
-               afb_req_reply_error(request, MHD_HTTP_FORBIDDEN);
-               return 1;
-       }
-
-       /* Retrieves file's status */
-       if (fstat(fd, &st) != 0) {
-               close(fd);
-               afb_req_reply_error(request, MHD_HTTP_INTERNAL_SERVER_ERROR);
-               return 1;
-       }
-
-       /* Don't serve directory */
-       if (S_ISDIR(st.st_mode)) {
-               rc = afb_req_reply_file_if_exist(request, fd, "index.html");
-               close(fd);
-               return rc;
-       }
-
-       /* Don't serve special files */
-       if (!S_ISREG(st.st_mode)) {
-               close(fd);
-               afb_req_reply_error(request, MHD_HTTP_FORBIDDEN);
-               return 1;
-       }
-
-       /* Check the method */
-       if ((request->method & (afb_method_get | afb_method_head)) == 0) {
-               close(fd);
-               afb_req_reply_error(request, MHD_HTTP_METHOD_NOT_ALLOWED);
-               return 1;
-       }
-
-       /* computes the etag */
-       sprintf(etag, "%08X%08X", ((int)(st.st_mtim.tv_sec) ^ (int)(st.st_mtim.tv_nsec)), (int)(st.st_size));
-
-       /* checks the etag */
-       inm = MHD_lookup_connection_value(request->connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_IF_NONE_MATCH);
-       if (inm && 0 == strcmp(inm, etag)) {
-               /* etag ok, return NOT MODIFIED */
-               close(fd);
-               if (verbose)
-                       fprintf(stderr, "Not Modified: [%s]\n", filename);
-               response = MHD_create_response_from_buffer(0, empty_string, MHD_RESPMEM_PERSISTENT);
-               status = MHD_HTTP_NOT_MODIFIED;
-       } else {
-               /* check the size */
-               if (st.st_size != (off_t) (size_t) st.st_size) {
-                       close(fd);
-                       afb_req_reply_error(request, MHD_HTTP_INTERNAL_SERVER_ERROR);
-                       return 1;
-               }
-
-               /* create the response */
-               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 (request->session->magic) {
-                       const char *mimetype = magic_descriptor(request->session->magic, fd);
-                       if (mimetype != NULL)
-                               MHD_add_response_header(response, MHD_HTTP_HEADER_CONTENT_TYPE, mimetype);
+       int later;
+       if (afb_websock_check(hreq, &later)) {
+               if (!later) {
+                       struct afb_websock *ws = afb_websock_create(hreq->connection);
                }
-#endif
+               return 1;
        }
 
-       /* fills the value and send */
-       MHD_add_response_header(response, MHD_HTTP_HEADER_CACHE_CONTROL, request->session->cacheTimeout);
-       MHD_add_response_header(response, MHD_HTTP_HEADER_ETAG, etag);
-       MHD_queue_response(request->connection, status, response);
-       MHD_destroy_response(response);
-       return 1;
-}
-
-static int afb_req_reply_file(struct afb_hreq *request, int dirfd, const char *filename)
-{
-       int rc = afb_req_reply_file_if_exist(request, dirfd, filename);
-       if (rc == 0)
-               afb_req_reply_error(request, MHD_HTTP_NOT_FOUND);
-       return 1;
+       return doRestApi(hreq->connection, hreq->session, &hreq->tail[1], get_method_name(hreq->method),
+                        post->upload_data, post->upload_data_size, (void **)hreq->recorder);
 }
 
-struct afb_diralias {
-       const char *alias;
-       const char *directory;
-       size_t lendir;
-       int dirfd;
-};
-
-static int handle_alias(struct afb_hreq *request, struct afb_hreq_post *post, void *data)
+static int handle_alias(struct afb_hreq *hreq, struct afb_hreq_post *post, void *data)
 {
-       char *path;
        struct afb_diralias *da = data;
-       size_t lenalias;
 
-       if (request->method != afb_method_get) {
-               afb_req_reply_error(request, MHD_HTTP_METHOD_NOT_ALLOWED);
+       if (hreq->method != afb_method_get) {
+               afb_hreq_reply_error(hreq, MHD_HTTP_METHOD_NOT_ALLOWED);
                return 1;
        }
 
-       if (!validsubpath(request->tail)) {
-               afb_req_reply_error(request, MHD_HTTP_FORBIDDEN);
+       if (!afb_hreq_valid_tail(hreq)) {
+               afb_hreq_reply_error(hreq, MHD_HTTP_FORBIDDEN);
                return 1;
        }
 
-       return afb_req_reply_file(request, da->dirfd, &request->tail[request->lentail + 1]);
+       return afb_hreq_reply_file(hreq, da->dirfd, &hreq->tail[1]);
 }
 
 int afb_req_add_alias(AFB_session * session, const char *prefix, const char *alias, int priority)
@@ -370,7 +175,7 @@ int afb_req_add_alias(AFB_session * session, const char *prefix, const char *ali
                da->directory = alias;
                da->lendir = strlen(da->directory);
                da->dirfd = dirfd;
-               if (afb_req_add_handler(session, prefix, handle_alias, (void *)alias, priority))
+               if (afb_req_add_handler(session, prefix, handle_alias, da, priority))
                        return 1;
                free(da);
        }
@@ -393,7 +198,7 @@ static int my_default_init(AFB_session * session)
        if (!afb_req_add_alias(session, "", session->config->rootdir, -10))
                return 0;
 
-       if (!afb_req_add_handler(session, session->config->rootbase, afb_request_one_page_api_redirect, NULL, -20))
+       if (!afb_req_add_handler(session, session->config->rootbase, afb_hreq_one_page_api_redirect, NULL, -20))
                return 0;
 
        return 1;
@@ -410,10 +215,10 @@ static int access_handler(
                void **recorder)
 {
        struct afb_hreq_post post;
-       struct afb_hreq request;
+       struct afb_hreq hreq;
        enum afb_method method;
        AFB_session *session;
-       struct afb_req_handler *iter;
+       struct afb_hsrv_handler *iter;
 
        session = cls;
        post.upload_data = upload_data;
@@ -441,35 +246,36 @@ static int access_handler(
 
        method = get_method(methodstr);
        if (method == afb_method_none) {
-               afb_req_reply_error(&request, MHD_HTTP_BAD_REQUEST);
+               afb_hreq_reply_error(&hreq, MHD_HTTP_BAD_REQUEST);
                return MHD_YES;
        }
 
        /* init the request */
-       request.session = cls;
-       request.connection = connection;
-       request.method = method;
-       request.tail = request.url = url;
-       request.lentail = request.lenurl = strlen(url);
-       request.recorder = (struct afb_hreq **)recorder;
-       request.post_handler = NULL;
-       request.post_completed = NULL;
-       request.post_data = NULL;
+       hreq.session = cls;
+       hreq.connection = connection;
+       hreq.method = method;
+       hreq.version = version;
+       hreq.tail = hreq.url = url;
+       hreq.lentail = hreq.lenurl = strlen(url);
+       hreq.recorder = (struct afb_hreq **)recorder;
+       hreq.post_handler = NULL;
+       hreq.post_completed = NULL;
+       hreq.post_data = NULL;
 
        /* search an handler for the request */
        iter = session->handlers;
        while (iter) {
-               if (afb_req_unprefix(&request, iter->prefix, iter->length)) {
-                       if (iter->handler(&request, &post, iter->data))
+               if (afb_hreq_unprefix(&hreq, iter->prefix, iter->length)) {
+                       if (iter->handler(&hreq, &post, iter->data))
                                return MHD_YES;
-                       request.tail = request.url;
-                       request.lentail = request.lenurl;
+                       hreq.tail = hreq.url;
+                       hreq.lentail = hreq.lenurl;
                }
                iter = iter->next;
        }
 
        /* no handler */
-       afb_req_reply_error(&request, method != afb_method_get ? MHD_HTTP_BAD_REQUEST : MHD_HTTP_NOT_FOUND);
+       afb_hreq_reply_error(&hreq, method != afb_method_get ? MHD_HTTP_BAD_REQUEST : MHD_HTTP_NOT_FOUND);
        return MHD_YES;
 }
 
@@ -529,9 +335,6 @@ AFB_error httpdStart(AFB_session * session)
                return AFB_FATAL;
        }
 
-       /* Initialise Client Session Hash Table */
-       ctxStoreInit(CTX_NBCLIENTS);
-
 #if defined(USE_MAGIC_MIME_TYPE)
        /*TBD open libmagic cache [fail to pass EFENCE check (allocating 0 bytes)] */
        init_lib_magic (session);
@@ -543,7 +346,7 @@ AFB_error httpdStart(AFB_session * session)
        }
 
        session->httpd = MHD_start_daemon(
-               MHD_USE_EPOLL_LINUX_ONLY | MHD_USE_TCP_FASTOPEN | MHD_USE_DEBUG,
+               MHD_USE_EPOLL_LINUX_ONLY | MHD_USE_TCP_FASTOPEN | MHD_USE_DEBUG | MHD_USE_SUSPEND_RESUME,
                (uint16_t) session->config->httpdPort,  /* port */
                new_client_handler, NULL,       /* Tcp Accept call back + extra attribute */
                access_handler, session,        /* Http Request Call back + extra attribute */