enforce locale processing for files

[src/app-framework-binder.git] / src / afb-hreq.c

diff --git a/src/afb-hreq.c b/src/afb-hreq.c
index a4ccf67..885a456 100644 (file)
--- a/src/afb-hreq.c
+++ b/src/afb-hreq.c
@@ -40,6 +40,7 @@
 #include "afb-subcall.h"
 #include "session.h"
 #include "verbose.h"
+#include "locale-root.h"
 
 #define SIZE_RESPONSE_BUFFER   8192
 
@@ -487,6 +488,112 @@ int afb_hreq_reply_file(struct afb_hreq *hreq, int dirfd, const char *filename)
        return 1;
 }
 
+int afb_hreq_reply_locale_file_if_exist(struct afb_hreq *hreq, struct locale_search *search, const char *filename)
+{
+       int rc;
+       int fd;
+       unsigned int status;
+       struct stat st;
+       char etag[1 + 2 * 8];
+       const char *inm;
+       struct MHD_Response *response;
+       const char *mimetype;
+
+       /* Opens the file or directory */
+       fd = locale_search_open(search, filename[0] ? filename : ".", O_RDONLY);
+       if (fd < 0) {
+               if (errno == ENOENT)
+                       return 0;
+               afb_hreq_reply_error(hreq, MHD_HTTP_FORBIDDEN);
+               return 1;
+       }
+
+       /* Retrieves file's status */
+       if (fstat(fd, &st) != 0) {
+               close(fd);
+               afb_hreq_reply_error(hreq, MHD_HTTP_INTERNAL_SERVER_ERROR);
+               return 1;
+       }
+
+       /* serve directory */
+       if (S_ISDIR(st.st_mode)) {
+               rc = afb_hreq_redirect_to_ending_slash_if_needed(hreq);
+               if (rc == 0) {
+                       static const char *indexes[] = { "index.html", NULL };
+                       int i = 0;
+                       size_t length = strlen(filename);
+                       char *extname = alloca(length + 30); /* 30 is enough to old data of indexes */
+                       memcpy(extname, filename, length);
+                       if (length && extname[length - 1] != '/')
+                               extname[length++] = '/';
+                       while (rc == 0 && indexes[i] != NULL) {
+                               strcpy(extname + length, indexes[i++]);
+                               rc = afb_hreq_reply_locale_file_if_exist(hreq, search, extname);
+                       }
+               }
+               close(fd);
+               return rc;
+       }
+
+       /* Don't serve special files */
+       if (!S_ISREG(st.st_mode)) {
+               close(fd);
+               afb_hreq_reply_error(hreq, MHD_HTTP_FORBIDDEN);
+               return 1;
+       }
+
+       /* Check the method */
+       if ((hreq->method & (afb_method_get | afb_method_head)) == 0) {
+               close(fd);
+               afb_hreq_reply_error(hreq, 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(hreq->connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_IF_NONE_MATCH);
+       if (inm && 0 == strcmp(inm, etag)) {
+               /* etag ok, return NOT MODIFIED */
+               close(fd);
+               DEBUG("Not Modified: [%s]", 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_hreq_reply_error(hreq, 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;
+
+               /* set the type */
+               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 */
+       afb_hreq_reply(hreq, status, response,
+                       MHD_HTTP_HEADER_CACHE_CONTROL, hreq->cacheTimeout,
+                       MHD_HTTP_HEADER_ETAG, etag,
+                       NULL);
+       return 1;
+}
+
+int afb_hreq_reply_locale_file(struct afb_hreq *hreq, struct locale_search *search, const char *filename)
+{
+       int rc = afb_hreq_reply_locale_file_if_exist(hreq, search, filename);
+       if (rc == 0)
+               afb_hreq_reply_error(hreq, MHD_HTTP_NOT_FOUND);
+       return 1;
+}
+
 struct _mkq_ {
        int count;
        size_t length;