X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fafb-hreq.c;h=b4fe29259a0b4d364faea9d00b41bf70e2d0505f;hb=efe18167d6ce59b263c179a6e2d01aa875c05cf8;hp=e231b659be87569e035962ae5e155ff9ba376435;hpb=32b5e2069bca01ae176ed15e38b5616435bf396f;p=src%2Fapp-framework-binder.git

diff --git a/src/afb-hreq.c b/src/afb-hreq.c
index e231b659..b4fe2925 100644
--- a/src/afb-hreq.c
+++ b/src/afb-hreq.c
@@ -16,17 +16,88 @@
  */
 
 #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 "local-def.h"
 #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 empty_string[1] = "";
+struct hreq_data {
+	struct hreq_data *next;
+	char *key;
+	int file;
+	size_t length;
+	char *value;
+};
+
+static struct afb_arg req_get(struct afb_hreq *hreq, const char *name);
+static void req_iterate(struct afb_hreq *hreq, int (*iterator)(void *closure, struct afb_arg arg), void *closure);
+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 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 = {
+	.get = (void*)req_get,
+	.iterate = (void*)req_iterate,
+	.fail = (void*)req_fail,
+	.success = (void*)req_success,
+	.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;
+		data = data->next;
+	}
+	if (create) {
+		data = calloc(1, sizeof *data);
+		if (data != NULL) {
+			data->key = strdup(key);
+			if (data->key == NULL) {
+				free(data);
+				data = NULL;
+			} else {
+				data->next = hreq->data;
+				hreq->data = data;
+			}
+		}
+	}
+	return data;
+}
 
 /* a valid subpath is a relative path not looking deeper than root using .. */
 static int validsubpath(const char *subpath)
@@ -65,34 +136,51 @@ static int validsubpath(const char *subpath)
 	return 1;
 }
 
+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;
+			free(data->key);
+			free(data->value);
+			free(data);
+		}
+		ctxClientPut(hreq->context);
+		free(hreq);
+	}
+}
+
 /*
- * Removes the 'prefix' of 'length' frome the tail of 'request'
+ * Removes the 'prefix' of 'length' from the tail of 'hreq'
  * if and only if the prefix exists and is terminated by a leading
  * slash
  */
-int afb_hreq_unprefix(struct afb_hreq *request, const char *prefix, size_t length)
+int afb_hreq_unprefix(struct afb_hreq *hreq, const char *prefix, size_t length)
 {
 	/* check the prefix ? */
-	if (length > request->lentail || (request->tail[length] && request->tail[length] != '/')
-	    || memcmp(prefix, request->tail, length))
+	if (length > hreq->lentail || (hreq->tail[length] && hreq->tail[length] != '/')
+	    || strncasecmp(prefix, hreq->tail, length))
 		return 0;
 
 	/* removes successives / */
-	while (length < request->lentail && request->tail[length + 1] == '/')
+	while (length < hreq->lentail && hreq->tail[length + 1] == '/')
 		length++;
 
 	/* update the tail */
-	request->lentail -= length;
-	request->tail += length;
+	hreq->lentail -= length;
+	hreq->tail += length;
 	return 1;
 }
 
-int afb_hreq_valid_tail(struct afb_hreq *request)
+int afb_hreq_valid_tail(struct afb_hreq *hreq)
 {
-	return validsubpath(request->tail);
+	return validsubpath(hreq->tail);
 }
 
-void afb_hreq_reply_error(struct afb_hreq *request, unsigned int status)
+void afb_hreq_reply_error(struct afb_hreq *hreq, unsigned int status)
 {
 	char *buffer;
 	int length;
@@ -105,12 +193,12 @@ void afb_hreq_reply_error(struct afb_hreq *request, unsigned int status)
 		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))
+	if (!MHD_queue_response(hreq->connection, status, response))
 		fprintf(stderr, "Failed to reply error code %u", status);
 	MHD_destroy_response(response);
 }
 
-int afb_hreq_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char *filename)
+int afb_hreq_reply_file_if_exist(struct afb_hreq *hreq, int dirfd, const char *filename)
 {
 	int rc;
 	int fd;
@@ -121,24 +209,41 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char
 	struct MHD_Response *response;
 
 	/* Opens the file or directory */
-	fd = openat(dirfd, filename, O_RDONLY);
-	if (fd < 0) {
-		if (errno == ENOENT)
-			return 0;
-		afb_hreq_reply_error(request, 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 */
 	if (fstat(fd, &st) != 0) {
 		close(fd);
-		afb_hreq_reply_error(request, MHD_HTTP_INTERNAL_SERVER_ERROR);
+		afb_hreq_reply_error(hreq, MHD_HTTP_INTERNAL_SERVER_ERROR);
 		return 1;
 	}
 
-	/* Don't serve directory */
+	/* serve directory */
 	if (S_ISDIR(st.st_mode)) {
-		rc = afb_hreq_reply_file_if_exist(request, fd, "index.html");
+		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");
+		}
 		close(fd);
 		return rc;
 	}
@@ -146,14 +251,14 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char
 	/* Don't serve special files */
 	if (!S_ISREG(st.st_mode)) {
 		close(fd);
-		afb_hreq_reply_error(request, MHD_HTTP_FORBIDDEN);
+		afb_hreq_reply_error(hreq, MHD_HTTP_FORBIDDEN);
 		return 1;
 	}
 
 	/* Check the method */
-	if ((request->method & (afb_method_get | afb_method_head)) == 0) {
+	if ((hreq->method & (afb_method_get | afb_method_head)) == 0) {
 		close(fd);
-		afb_hreq_reply_error(request, MHD_HTTP_METHOD_NOT_ALLOWED);
+		afb_hreq_reply_error(hreq, MHD_HTTP_METHOD_NOT_ALLOWED);
 		return 1;
 	}
 
@@ -161,11 +266,11 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char
 	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);
+	inm = MHD_lookup_connection_value(hreq->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)
+		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;
@@ -173,7 +278,7 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char
 		/* check the size */
 		if (st.st_size != (off_t) (size_t) st.st_size) {
 			close(fd);
-			afb_hreq_reply_error(request, MHD_HTTP_INTERNAL_SERVER_ERROR);
+			afb_hreq_reply_error(hreq, MHD_HTTP_INTERNAL_SERVER_ERROR);
 			return 1;
 		}
 
@@ -183,8 +288,8 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char
 
 #if defined(USE_MAGIC_MIME_TYPE)
 		/* set the type */
-		if (request->session->magic) {
-			const char *mimetype = magic_descriptor(request->session->magic, fd);
+		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);
 		}
@@ -192,31 +297,269 @@ int afb_hreq_reply_file_if_exist(struct afb_hreq *request, int dirfd, const char
 	}
 
 	/* 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_CACHE_CONTROL, hreq->session->cacheTimeout);
 	MHD_add_response_header(response, MHD_HTTP_HEADER_ETAG, etag);
-	MHD_queue_response(request->connection, status, response);
+	MHD_queue_response(hreq->connection, status, response);
 	MHD_destroy_response(response);
 	return 1;
 }
 
-int afb_hreq_reply_file(struct afb_hreq *request, int dirfd, const char *filename)
+int afb_hreq_reply_file(struct afb_hreq *hreq, int dirfd, const char *filename)
 {
-	int rc = afb_hreq_reply_file_if_exist(request, dirfd, filename);
+	int rc = afb_hreq_reply_file_if_exist(hreq, dirfd, filename);
 	if (rc == 0)
-		afb_hreq_reply_error(request, MHD_HTTP_NOT_FOUND);
+		afb_hreq_reply_error(hreq, MHD_HTTP_NOT_FOUND);
 	return 1;
 }
 
-int afb_hreq_redirect_to(struct afb_hreq *request, const char *url)
+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(request->connection, MHD_HTTP_MOVED_PERMANENTLY, response);
+	MHD_queue_response(hreq->connection, MHD_HTTP_MOVED_PERMANENTLY, response);
+	MHD_destroy_response(response);
+	if (verbosity)
+		fprintf(stderr, "redirect from [%s] to [%s]\n", hreq->url, url);
+	return 1;
+}
+
+const char *afb_hreq_get_cookie(struct afb_hreq *hreq, const char *name)
+{
+	return MHD_lookup_connection_value(hreq->connection, MHD_COOKIE_KIND, name);
+}
+
+const char *afb_hreq_get_argument(struct afb_hreq *hreq, const char *name)
+{
+	struct hreq_data *data = get_data(hreq, name, 0);
+	return data ? data->value : MHD_lookup_connection_value(hreq->connection, MHD_GET_ARGUMENT_KIND, name);
+}
+
+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) {
+		return 0;
+	}
+	p = realloc(hdat->value, hdat->length + size + 1);
+	if (p == NULL) {
+		return 0;
+	}
+	hdat->value = p;
+	memcpy(&hdat->value[hdat->length], data, size);
+	hdat->length += size;
+	hdat->value[hdat->length] = 0;
+	return 1;
+}
+
+int afb_hreq_post_add_file(struct afb_hreq *hreq, const char *key, const char *file, const char *data, size_t size)
+{
+	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)
+			return 0;
+	}
+	if (hdat->file > 0) {
+		write(hdat->file, data, size);
+		return 1;
+	}
+
+	/* creation */
+	/* TODO */
+	return 0;
+	
+}
+
+int afb_hreq_is_argument_a_file(struct afb_hreq *hreq, const char *key)
+{
+	struct hreq_data *hdat = get_data(hreq, key, 0);
+	return hdat != NULL && hdat->file != 0;
+}
+
+
+struct afb_req afb_hreq_to_req(struct afb_hreq *hreq)
+{
+	return (struct afb_req){ .itf = &afb_hreq_itf, .data = hreq };
+}
+
+static struct afb_arg req_get(struct afb_hreq *hreq, const char *name)
+{
+	struct hreq_data *hdat = get_data(hreq, name, 0);
+	if (hdat)
+		return (struct afb_arg){
+			.name = hdat->key,
+			.value = hdat->value,
+			.size = hdat->length,
+			.is_file = (hdat->file != 0)
+		};
+		
+	return (struct afb_arg){
+		.name = name,
+		.value = MHD_lookup_connection_value(hreq->connection, MHD_GET_ARGUMENT_KIND, name),
+		.size = 0,
+		.is_file = 0
+	};
+}
+
+struct iterdata
+{
+	struct afb_hreq *hreq;
+	int (*iterator)(void *closure, struct afb_arg arg);
+	void *closure;
+};
+
+static int _iterargs_(struct iterdata *id, enum MHD_ValueKind kind, const char *key, const char *value)
+{
+	if (get_data(id->hreq, key, 0))
+		return 1;
+	return id->iterator(id->closure, (struct afb_arg){
+		.name = key,
+		.value = value,
+		.size = 0,
+		.is_file = 0
+	});
+}
+
+static void req_iterate(struct afb_hreq *hreq, int (*iterator)(void *closure, struct afb_arg arg), void *closure)
+{
+	struct iterdata id = { .hreq = hreq, .iterator = iterator, .closure = closure };
+	struct hreq_data *hdat = hreq->data;
+	while (hdat) {
+		if (!iterator(closure, (struct afb_arg){
+			.name = hdat->key,
+			.value = hdat->value,
+			.size = hdat->length,
+			.is_file = (hdat->file != 0)}))
+			return;
+		hdat = hdat->next;
+	}
+	MHD_get_connection_values (hreq->connection, MHD_GET_ARGUMENT_KIND, (void*)_iterargs_, &id);
+}
+
+static ssize_t send_json_cb(json_object *obj, uint64_t pos, char *buf, size_t max)
+{
+	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));
+	}
+
+	response = MHD_create_response_from_callback(MHD_SIZE_UNKNOWN, SIZE_RESPONSE_BUFFER, (void*)send_json_cb, root, (void*)json_object_put);
+	MHD_queue_response(hreq->connection, retcode, response);
 	MHD_destroy_response(response);
-	if (verbose)
-		fprintf(stderr, "redirect from [%s] to [%s]\n", request->url, url);
+}
+
+static void req_fail(struct afb_hreq *hreq, const char *status, const char *info)
+{
+	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, uuid_cookie);
+		hreq->context = ctxClientGet(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);
+}
+
+
+