* 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>
+
+#if defined(USE_MAGIC_MIME_TYPE)
+#include <magic.h>
+#endif
+
+#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)
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 '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;
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;
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(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;
}
/* 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;
}
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;
/* 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;
}
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);
- }
-#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, 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 (verbose)
- fprintf(stderr, "redirect from [%s] to [%s]\n", request->url, url);
+ 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);
+}
+
+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);
+}
+
+
+
Code Review / src / app-framework-binder.git / blobdiff