/* Feel free to use this example code in any way you see fit (Public Domain) */ #include #ifndef _WIN32 #include #include #else #include #endif #include #include #include #include #if defined(_MSC_VER) && _MSC_VER+0 <= 1800 /* Substitution is OK while return value is not used */ #define snprintf _snprintf #endif #define PORT 8888 #define POSTBUFFERSIZE 512 #define MAXNAMESIZE 20 #define MAXANSWERSIZE 512 #define GET 0 #define POST 1 struct connection_info_struct { int connectiontype; char *answerstring; struct MHD_PostProcessor *postprocessor; }; const char *askpage = "\ What's your name, Sir?
\ \ "; const char *greetingpage = "

Welcome, %s!

"; const char *errorpage = "This doesn't seem to be right."; static int send_page (struct MHD_Connection *connection, const char *page) { int ret; struct MHD_Response *response; response = MHD_create_response_from_buffer (strlen (page), (void *) page, MHD_RESPMEM_PERSISTENT); if (!response) return MHD_NO; ret = MHD_queue_response (connection, MHD_HTTP_OK, response); MHD_destroy_response (response); return ret; } static int iterate_post (void *coninfo_cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *content_type, const char *transfer_encoding, const char *data, uint64_t off, size_t size) { struct connection_info_struct *con_info = coninfo_cls; (void)kind; /* Unused. Silent compiler warning. */ (void)filename; /* Unused. Silent compiler warning. */ (void)content_type; /* Unused. Silent compiler warning. */ (void)transfer_encoding; /* Unused. Silent compiler warning. */ (void)off; /* Unused. Silent compiler warning. */ if (0 == strcmp (key, "name")) { if ((size > 0) && (size <= MAXNAMESIZE)) { char *answerstring; answerstring = malloc (MAXANSWERSIZE); if (!answerstring) return MHD_NO; snprintf (answerstring, MAXANSWERSIZE, greetingpage, data); con_info->answerstring = answerstring; } else con_info->answerstring = NULL; return MHD_NO; } return MHD_YES; } static void request_completed (void *cls, struct MHD_Connection *connection, void **con_cls, enum MHD_RequestTerminationCode toe) { struct connection_info_struct *con_info = *con_cls; (void)cls; /* Unused. Silent compiler warning. */ (void)connection; /* Unused. Silent compiler warning. */ (void)toe; /* Unused. Silent compiler warning. */ if (NULL == con_info) return; if (con_info->connectiontype == POST) { MHD_destroy_post_processor (con_info->postprocessor); if (con_info->answerstring) free (con_info->answerstring); } free (con_info); *con_cls = NULL; } static int answer_to_connection (void *cls, struct MHD_Connection *connection, const char *url, const char *method, const char *version, const char *upload_data, size_t *upload_data_size, void **con_cls) { (void)cls; /* Unused. Silent compiler warning. */ (void)url; /* Unused. Silent compiler warning. */ (void)version; /* Unused. Silent compiler warning. */ if (NULL == *con_cls) { struct connection_info_struct *con_info; con_info = malloc (sizeof (struct connection_info_struct)); if (NULL == con_info) return MHD_NO; con_info->answerstring = NULL; if (0 == strcmp (method, "POST")) { con_info->postprocessor = MHD_create_post_processor (connection, POSTBUFFERSIZE, iterate_post, (void *) con_info); if (NULL == con_info->postprocessor) { free (con_info); return MHD_NO; } con_info->connectiontype = POST; } else con_info->connectiontype = GET; *con_cls = (void *) con_info; return MHD_YES; } if (0 == strcmp (method, "GET")) { return send_page (connection, askpage); } if (0 == strcmp (method, "POST")) { struct connection_info_struct *con_info = *con_cls; if (*upload_data_size != 0) { MHD_post_process (con_info->postprocessor, upload_data, *upload_data_size); *upload_data_size = 0; return MHD_YES; } else if (NULL != con_info->answerstring) return send_page (connection, con_info->answerstring); } return send_page (connection, errorpage); } int main () { struct MHD_Daemon *daemon; daemon = MHD_start_daemon (MHD_USE_AUTO | MHD_USE_INTERNAL_POLLING_THREAD, PORT, NULL, NULL, &answer_to_connection, NULL, MHD_OPTION_NOTIFY_COMPLETED, request_completed, NULL, MHD_OPTION_END); if (NULL == daemon) return 1; (void) getchar (); MHD_stop_daemon (daemon); return 0; }