* 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;
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
*/
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)
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 */
/* 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;
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;
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;
}
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;
}
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);
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;
+}
+
+
Code Review / src / app-framework-binder.git / blobdiff