* 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";
+
+
struct hreq_data {
struct hreq_data *next;
char *key;
- int file;
size_t length;
char *value;
+ char *path;
+};
+
+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)
return 1;
}
+#if defined(USE_MAGIC_MIME_TYPE)
+
+#if !defined(MAGIC_DB)
+#define MAGIC_DB "/usr/share/misc/magic.mgc"
+#endif
+
+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;
+ free(data->key);
+ free(data->value);
+ free(data);
+ }
+ ctxClientPut(hreq->context);
+ 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
*/
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_CACHE_CONTROL, hreq->cacheTimeout);
MHD_add_response_header(response, MHD_HTTP_HEADER_ETAG, etag);
MHD_queue_response(hreq->connection, status, response);
MHD_destroy_response(response);
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)
+ 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);
}
-const struct afb_req_itf afb_hreq_itf = {
- .get_cookie = (void*)afb_hreq_get_cookie,
- .get_argument = (void*)afb_hreq_get_argument
-};
-
-
-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)
+fprintf(stderr, "%s=%s %s=%s %s\n",key,hdat->key,file,hdat->value,hdat->path);
+ 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 (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;
}
- if (hdat->file > 0) {
- write(hdat->file, data, size);
+ close(fd);
+ return !size;
+}
+
+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,
+ .path = hdat->path
+ };
+
+ return (struct afb_arg){
+ .name = name,
+ .value = MHD_lookup_connection_value(hreq->connection, MHD_GET_ARGUMENT_KIND, name),
+ .size = 0,
+ .path = NULL
+ };
+}
+
+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 = value ? strlen(value) : 0,
+ .path = NULL
+ });
+}
+
+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,
+ .path = hdat->path}))
+ return;
+ hdat = hdat->next;
}
+ MHD_get_connection_values (hreq->connection, MHD_GET_ARGUMENT_KIND, (void*)_iterargs_, &id);
+}
- /* creation */
- /* TODO */
- return 0;
-
+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);
}
+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 = 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);
+}
+
+
+