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Alternative to mg_upload (Step 48/?)

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This commit is contained in:
bel
2016-02-12 23:03:35 +01:00
parent 13a45e903f
commit 03047808a0
2 changed files with 29 additions and 11 deletions
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6
examples/embedded_c/embedded_c.c
View File

@ -201,7 +201,11 @@ field_found(const char *key,
mg_printf(conn, "%s:\r\n", key);
if (filename && *filename) {
_snprintf(path, pathlen, "C:\\tmp\\%s", filename);
#ifdef _WIN32
_snprintf(path, pathlen, "D:\\tmp\\%s", filename);
#else
snprintf(path, pathlen, "/tmp/%s", filename);
#endif
return FORM_FIELD_STORAGE_STORE;
}
return FORM_FIELD_STORAGE_GET;

34
src/handle_form.inl
View File

@ -29,19 +29,23 @@
/* This structure contains callback functions for handling form fields.
It is used as an argument to mg_handle_form_data.
*/
It is used as an argument to mg_handle_form_data. */
struct mg_form_data_handler {
/* This callback is called, if a new field is about to be read.
/* This callback function is called, if a new field has been found.
* The return value of this callback is used to define how the field
* should be processed.
*
* Parameters:
* key: Name of the field ("name" property of the HTML input field).
* filename: Name of a file to upload, at the client computer.
* Only set for input fields of type "file", otherwise NULL.
* path: Output parameter: File name (incl. path) to store the file
* at the server computer. Only used if FORM_FIELD_STORAGE_STORE
* is returned by this callback.
* is returned by this callback. Existing files will be
* overwritten.
* pathlen: Length of the buffer for path.
* user_data: Value of the member user_data of mg_form_data_handler
*
* Return value:
* The callback must return the intended storage for this field
* (See FORM_FIELD_STORAGE_*).
@ -54,10 +58,12 @@ struct mg_form_data_handler {
/* If the "field_found" callback returned FORM_FIELD_STORAGE_GET,
* this callback will receive the field data.
*
* Parameters:
* key: Name of the field ("name" property of the HTML input field).
* value: Value of the input field.
* user_data: Value of the member user_data of mg_form_data_handler
*
* Return value:
* TODO: Needs to be defined.
*/
@ -68,16 +74,22 @@ struct mg_form_data_handler {
/* If the "field_found" callback returned FORM_FIELD_STORAGE_STORE,
* the data will be stored into a file. If the file has been written
* sucessfully, this callback will be called.
* successfully, this callback will be called. This callback will
* not be called for only partially uploaded files. The
* mg_handle_form_data function will either store the file completely
* and call this callback, or it will remove any partial content and
* not call this callback function.
*
* Parameters:
* path: Path of the file stored at the server.
* user_data: Value of the member user_data of mg_form_data_handler
*
* Return value:
* TODO: Needs to be defined.
*/
int (*field_stored)(const char *path, void *user_data);
/* User supplied argument, passed to all callbacks. */
/* User supplied argument, passed to all callback functions. */
void *user_data;
};
@ -101,9 +113,11 @@ enum {
/* Process form data.
* Returns the number of fields handled, or < 0 in case of an error.
* Note: It is possible that several fields are handled succesfully (e.g.,
* stored in a file), before the request handling is stopped with an
* error. In this case a number < 0 is returned as well. */
* Note: It is possible that several fields are already handled successfully
* (e.g., stored into files), before the request handling is stopped with an
* error. In this case a number < 0 is returned as well.
* In any case, it is the duty of the caller to remove files once they are
* no longer required. */
CIVETWEB_API int mg_handle_form_data(struct mg_connection *conn,
struct mg_form_data_handler *fdh);
@ -727,7 +741,7 @@ mg_handle_form_data(struct mg_connection *conn,
}
memmove(buf, hend + towrite, bl + 4);
buf_fill = bl + 4;
buf_fill = (int)(bl + 4);
hend = buf;
/* Read new data */