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#include <glib.h>
#include <string.h>
#include "pipecomponent.h"
#include "webvicontext.h"
#include "request.h"
#include "link.h"
struct WebviRequest {
PipeComponent *pipe_head;
gchar *url;
webvi_callback write_cb;
webvi_callback read_cb;
void *writedata;
void *readdata;
struct WebviContext *ctx; /* borrowed reference */
};
struct RequestStateMessage {
RequestState state;
const char *message;
};
static PipeComponent *pipe_factory(const WebviRequest *self);
static void notify_pipe_finished(RequestState state, void *data);
static const char *pipe_state_to_message(RequestState state);
static gchar *wvt_to_local_file(const WebviContext *ctx, const char *wvt);
static PipeComponent *build_and_start_mainmenu_pipe(const WebviRequest *self);
static PipeComponent *build_and_start_local_pipe(const WebviRequest *self);
static PipeComponent *build_and_start_external_pipe(const WebviRequest *self,
const char *command);
static PipeComponent *build_and_start_menu_pipe(const WebviRequest *self);
WebviRequest *request_create(const char *url, struct WebviContext *ctx) {
WebviRequest *req = malloc(sizeof(WebviRequest));
memset(req, 0, sizeof(WebviRequest));
req->url = g_strdup(url);
req->ctx = ctx;
return req;
}
void request_delete(WebviRequest *self) {
if (self) {
request_stop(self);
pipe_delete_full(self->pipe_head);
g_free(self->url);
}
}
gboolean request_start(WebviRequest *self) {
if (!self->pipe_head) {
self->pipe_head = pipe_factory(self);
if (!self->pipe_head) {
notify_pipe_finished(WEBVISTATE_NOT_FOUND, self);
}
}
return TRUE;
}
void request_stop(WebviRequest *self) {
// FIXME
}
PipeComponent *pipe_factory(const WebviRequest *self) {
PipeComponent *head;
if (strcmp(self->url, "wvt://mainmenu") == 0) {
head = build_and_start_mainmenu_pipe(self);
} else if (strncmp(self->url, "wvt://", 6) == 0) {
head = build_and_start_local_pipe(self);
} else {
const LinkAction *action = link_templates_get_action(
get_link_templates(self->ctx), self->url);
LinkActionType action_type = action ? link_action_get_type(action) : LINK_ACTION_PARSE;
if ((action_type == LINK_ACTION_STREAM) ||
(action_type == LINK_ACTION_EXTERNAL_COMMAND)) {
const char *command = link_action_get_command(action);
head = build_and_start_external_pipe(self, command);
} else {
head = build_and_start_menu_pipe(self);
}
}
return head;
}
PipeComponent *build_and_start_mainmenu_pipe(const WebviRequest *self) {
PipeMainMenuDownloader *p1 = pipe_mainmenu_downloader_create(self->ctx);
PipeComponent *p2 = (PipeComponent *)pipe_callback_wrapper_create(
self->read_cb, self->readdata, notify_pipe_finished, (void *)self);
pipe_component_set_next((PipeComponent *)p1, p2);
pipe_mainmenu_downloader_start(p1);
return (PipeComponent *)p1;
}
PipeComponent *build_and_start_local_pipe(const WebviRequest *self) {
gchar *filename = wvt_to_local_file(self->ctx, self->url);
PipeLocalFile *p1 = pipe_local_file_create(filename);
g_free(filename);
PipeComponent *p2 = (PipeComponent *)pipe_callback_wrapper_create(
self->read_cb, self->readdata, notify_pipe_finished, (void *)self);
pipe_component_set_next((PipeComponent *)p1, p2);
pipe_local_file_start(p1);
return (PipeComponent *)p1;
}
PipeComponent *build_and_start_external_pipe(const WebviRequest *self,
const char *command)
{
const char *path = webvi_context_get_menu_script_path(self->ctx);
PipeExternalDownloader *p1 = pipe_external_downloader_create(
self->url, command, path);
PipeComponent *p2 = (PipeComponent *)pipe_menu_validator_create();
PipeComponent *p3 = (PipeComponent *)pipe_callback_wrapper_create(
self->read_cb, self->readdata, notify_pipe_finished, (void *)self);
pipe_component_set_next((PipeComponent *)p1, p2);
pipe_component_set_next((PipeComponent *)p2, p3);
pipe_external_downloader_start(p1);
return (PipeComponent *)p1;
}
PipeComponent *build_and_start_menu_pipe(const WebviRequest *self) {
CURLM *curlmulti = webvi_context_get_curl_multi_handle(self->ctx);
PipeDownloader *p1 = pipe_downloader_create(self->url, curlmulti);
PipeComponent *p2 = (PipeComponent *)pipe_link_extractor_create(
get_link_templates(self->ctx), self->url);
PipeComponent *p3 = (PipeComponent *)pipe_callback_wrapper_create(
self->read_cb, self->readdata, notify_pipe_finished, (void *)self);
pipe_component_set_next((PipeComponent *)p1, p2);
pipe_component_set_next(p2, p3);
pipe_downloader_start(p1);
// TODO: the downloaded HTML should be converted into UTF-8
return (PipeComponent *)p1;
}
gchar *wvt_to_local_file(const WebviContext *ctx, const char *wvt) {
if (strncmp(wvt, "wvt://", 6) != 0)
return NULL;
const gchar *template_path = webvi_context_get_template_path(ctx);
if (!template_path)
return NULL; // FIXME
// FIXME: .. in paths
gchar *filename = g_strdup(wvt+6);
if (filename[0] == '/') {
// absolute path
// The path must be located under the template directory
if (strncmp(filename, template_path, strlen(template_path)) != 0) {
g_log(LIBWEBVI_LOG_DOMAIN, G_LOG_LEVEL_WARNING,
"Invalid path in wvt:// url");
g_free(filename);
return NULL;
}
} else {
// relative path, concatenate to template_path
gchar *absolute_path = g_strconcat(template_path, "/", filename, NULL);
g_free(filename);
filename = absolute_path;
}
return filename;
}
void request_fdset(WebviRequest *self, fd_set *readfds,
fd_set *writefds, fd_set *excfds, int *max_fd)
{
if (self->pipe_head) {
pipe_fdset(self->pipe_head, readfds, writefds, excfds, max_fd);
}
}
gboolean request_handle_socket(WebviRequest *self, int sockfd, int ev_bitmask)
{
if (self->pipe_head) {
return pipe_handle_socket(self->pipe_head, sockfd, ev_bitmask);
} else {
return FALSE;
}
}
void request_set_write_callback(WebviRequest *self, webvi_callback func) {
self->write_cb = func;
}
void request_set_read_callback(WebviRequest *self, webvi_callback func) {
self->read_cb = func;
}
void request_set_write_data(WebviRequest *self, void *data) {
self->writedata = data;
}
void request_set_read_data(WebviRequest *self, void *data) {
self->readdata = data;
}
const char *request_get_url(const WebviRequest *self) {
return self->url;
}
void notify_pipe_finished(RequestState state, void *data) {
WebviRequest *req = (WebviRequest *)data;
const char *msg = pipe_state_to_message(state);
webvi_context_add_finished_message(req->ctx, req, state, msg);
}
const char *pipe_state_to_message(RequestState state) {
static struct RequestStateMessage messages[] =
{{WEBVISTATE_NOT_FINISHED, "Not finished"},
{WEBVISTATE_FINISHED_OK, "Success"},
{WEBVISTATE_MEMORY_ALLOCATION_ERROR, "Out of memory"},
{WEBVISTATE_NOT_FOUND, "Not found"},
{WEBVISTATE_NETWORK_READ_ERROR, "Failed to receive data from the network"},
{WEBVISTATE_IO_ERROR, "IO error"},
{WEBVISTATE_TIMEDOUT, "Timedout"},
{WEBVISTATE_SUBPROCESS_FAILED, "Failed to execute a subprocess"},
{WEBVISTATE_INTERNAL_ERROR, "Internal error"}};
for (int i=0; i<(sizeof(messages)/sizeof(messages[0])); i++) {
if (state == messages[i].state) {
return messages[i].message;
}
}
return "Internal error";
}
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