/* $Id: ghtml-gtkhtml.c,v 1.7 2009/02/23 12:05:10 khorben Exp $ */ /* Copyright (c) 2009 Pierre Pronchery */ /* This file is part of DeforaOS Desktop Surfer */ /* Surfer is free software; you can redistribute it and/or modify it under the * terms of the GNU General Public License version 2 as published by the Free * Software Foundation. * * Surfer is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along with * Surfer; if not, write to the Free Software Foundation, Inc., 59 Temple Place, * Suite 330, Boston, MA 02111-1307 USA */ /* TODO: * - implement http protocol again * - fix URL generation for relative path * - fix links from directory listing * - progressive file load * - update the URL and title of the main window * - implement selection * - need to take care of CSRF? eg remotely load local files */ #include #include #include #include #include #include #include #include #define GNET_EXPERIMENTAL #include #include #include "ghtml.h" /* GHtml */ /* private */ typedef struct _GHtmlConn GHtmlConn; typedef struct _GHtml { Surfer * surfer; gchar * html_base; gchar * html_url; /* FIXME implement history */ /* connections */ struct _GHtmlConn ** conns; size_t conns_cnt; /* html widget */ HtmlDocument * html_document; gchar * html_title; GtkWidget * html_view; } GHtml; struct _GHtmlConn { GHtml * ghtml; char * url; guint64 content_length; guint64 data_received; HtmlStream * stream; /* file */ GIOChannel * file; guint64 file_size; guint64 file_read; /* http */ GConnHttp * http; }; /* prototypes */ static GHtmlConn * _ghtmlconn_new(GHtml * ghtml, HtmlStream * stream, gchar const * url); static void _ghtmlconn_delete(GHtmlConn * ghtmlconn); static int _ghtml_document_load(GHtml * ghtml, gchar const * url); static gchar * _ghtml_make_url(gchar const * base, gchar const * url); static int _ghtml_stream_load(GHtml * ghtml, HtmlStream * stream, gchar const * url); /* callbacks */ static void _on_link_clicked(HtmlDocument * document, const gchar * url); static void _on_request_url(HtmlDocument * document, const gchar * url, HtmlStream * stream); static void _on_set_base(HtmlDocument * document, const gchar * url); static void _on_submit(HtmlDocument * document, const gchar * url, const gchar * method, const gchar * encoding); static void _on_title_changed(HtmlDocument * document, const gchar * title); /* public */ /* functions */ GtkWidget * ghtml_new(Surfer * surfer) { GHtml * ghtml; GtkWidget * widget; if((ghtml = malloc(sizeof(*ghtml))) == NULL) return NULL; ghtml->surfer = surfer; ghtml->html_base = NULL; ghtml->html_url = NULL; ghtml->conns = NULL; ghtml->conns_cnt = 0; ghtml->html_view = html_view_new(); ghtml->html_document = html_document_new(); ghtml->html_title = NULL; g_object_set_data(G_OBJECT(ghtml->html_document), "ghtml", ghtml); g_signal_connect(G_OBJECT(ghtml->html_document), "link-clicked", G_CALLBACK(_on_link_clicked), NULL); g_signal_connect(G_OBJECT(ghtml->html_document), "request-url", G_CALLBACK(_on_request_url), NULL); g_signal_connect(G_OBJECT(ghtml->html_document), "set-base", G_CALLBACK( _on_set_base), NULL); g_signal_connect(G_OBJECT(ghtml->html_document), "submit", G_CALLBACK( _on_submit), NULL); g_signal_connect(G_OBJECT(ghtml->html_document), "title-changed", G_CALLBACK(_on_title_changed), NULL); html_view_set_document(HTML_VIEW(ghtml->html_view), ghtml->html_document); widget = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); g_object_set_data(G_OBJECT(widget), "ghtml", ghtml); gtk_container_add(GTK_CONTAINER(widget), ghtml->html_view); return widget; } /* accessors */ gboolean ghtml_can_go_back(GtkWidget * ghtml) { /* FIXME implement */ return FALSE; } gboolean ghtml_can_go_forward(GtkWidget * ghtml) { /* FIXME implement */ return FALSE; } /* ghtml_get_link_message */ char const * ghtml_get_link_message(GtkWidget * ghtml) { /* FIXME implement */ return NULL; } char const * ghtml_get_location(GtkWidget * widget) { GHtml * ghtml; ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); return ghtml->html_url; } char const * ghtml_get_title(GtkWidget * widget) { GHtml * ghtml; ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); return ghtml->html_title; } /* useful */ gboolean ghtml_go_back(GtkWidget * ghtml) { /* FIXME implement */ return FALSE; } gboolean ghtml_go_forward(GtkWidget * ghtml) { /* FIXME implement */ return FALSE; } /* ghtml_load_url */ void ghtml_load_url(GtkWidget * widget, char const * url) { GHtml * ghtml; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, url); #endif ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); if(_ghtml_document_load(ghtml, url) != 0) return; g_free(ghtml->html_base); ghtml->html_base = g_strdup(url); g_free(ghtml->html_url); ghtml->html_url = g_strdup(url); } /* ghtml_refresh */ void ghtml_refresh(GtkWidget * widget) { GHtml * ghtml; ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); if(ghtml->html_url == NULL) return; _ghtml_document_load(ghtml, ghtml->html_url); } /* ghtml_reload */ void ghtml_reload(GtkWidget * ghtml) { ghtml_refresh(ghtml); } /* ghtml_select_all */ void ghtml_select_all(GtkWidget * ghtml) { /* FIXME implement */ } /* ghtml_stop */ void ghtml_stop(GtkWidget * ghtml) { /* FIXME implement */ } /* ghtml_unselect_all */ void ghtml_unselect_all(GtkWidget * widget) { GHtml * ghtml; ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); html_selection_clear(HTML_VIEW(ghtml->html_view)); } /* ghtml_zoom_in */ void ghtml_zoom_in(GtkWidget * widget) { GHtml * ghtml; ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); html_view_zoom_in(HTML_VIEW(ghtml->html_view)); } /* ghtml_zoom_out */ void ghtml_zoom_out(GtkWidget * widget) { GHtml * ghtml; ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); html_view_zoom_out(HTML_VIEW(ghtml->html_view)); } /* ghtml_zoom_reset */ void ghtml_zoom_reset(GtkWidget * widget) { GHtml * ghtml; ghtml = g_object_get_data(G_OBJECT(widget), "ghtml"); html_view_zoom_reset(HTML_VIEW(ghtml->html_view)); } /* private */ /* functions */ static GHtmlConn * _ghtmlconn_new(GHtml * ghtml, HtmlStream * stream, gchar const * url) { GHtmlConn ** p; GHtmlConn * c; if((p = realloc(ghtml->conns, sizeof(*p) * (ghtml->conns_cnt + 1))) == NULL) return NULL; ghtml->conns = p; if((c = malloc(sizeof(*c))) == NULL) return NULL; ghtml->conns[ghtml->conns_cnt] = c; c->ghtml = ghtml; c->url = strdup(url); c->content_length = 0; c->data_received = 0; c->stream = stream; c->file = NULL; c->file_size = 0; c->file_read = 0; c->http = NULL; if(c->url == NULL) { _ghtmlconn_delete(c); return NULL; } ghtml->conns_cnt++; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(%p, %p, \"%s\") => %p\n", __func__, ghtml, stream, url, c); #endif return c; } /* ghtmlconn_delete */ static void _ghtmlconn_delete_file(GHtmlConn * ghtmlconn); static void _ghtmlconn_delete_http(GHtmlConn * ghtmlconn); static void _ghtmlconn_delete(GHtmlConn * ghtmlconn) { GHtml * ghtml = ghtmlconn->ghtml; size_t i; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(%p)\n", __func__, ghtmlconn); #endif for(i = 0; i < ghtml->conns_cnt; i++) if(ghtml->conns[i] == ghtmlconn) { ghtml->conns[i] = NULL; /* don't double free later */ break; } if(ghtmlconn->file != NULL) _ghtmlconn_delete_file(ghtmlconn); else if(ghtmlconn->http != NULL) _ghtmlconn_delete_http(ghtmlconn); free(ghtmlconn->url); if(ghtmlconn->stream != NULL) html_stream_close(ghtmlconn->stream); free(ghtmlconn); } static void _ghtmlconn_delete_file(GHtmlConn * ghtmlconn) { /* FIXME implement */ } static void _ghtmlconn_delete_http(GHtmlConn * ghtmlconn) { /* FIXME implement */ } /* ghtml_document_load */ static int _ghtml_document_load(GHtml * ghtml, gchar const * url) { html_document_open_stream(ghtml->html_document, "text/html"); return _ghtml_stream_load(ghtml, ghtml->html_document->current_stream, url); } /* ghtml_make_url */ static gchar * _ghtml_make_url(gchar const * base, gchar const * url) { char * b; char * p; if(url == NULL) return NULL; /* XXX use a more generic protocol finder (strchr(':')) */ if(strncmp("http://", url, 7) == 0) return g_strdup(url); if(strncmp("ftp://", url, 6) == 0) return g_strdup(url); if(base != NULL) { if(url[0] == '/') /* FIXME construct from / of base */ return g_strdup_printf("%s%s", base, url); /* construct from basename */ if((b = strdup(base)) == NULL) return NULL; if((p = strrchr(b, '/')) != NULL) *p = '\0'; p = g_strdup_printf("%s/%s", b, url); free(b); return p; } /* base is NULL, url is not NULL */ if(url[0] == '/') return g_strdup(url); /* guess protocol */ if(strncmp("ftp", url, 3) == 0) return g_strdup_printf("%s%s", "ftp://", url); return g_strdup_printf("%s%s", "http://", url); } /* ghtml_stream_load */ static gboolean _stream_load_idle(gpointer data); static gboolean _stream_load_idle_directory(GHtmlConn * conn); static gboolean _stream_load_idle_file(GHtmlConn * conn); static gboolean _stream_load_watch_file(GIOChannel * source, GIOCondition condition, gpointer data); static gboolean _stream_load_idle_http(GHtmlConn * conn); static int _ghtml_stream_load(GHtml * ghtml, HtmlStream * stream, gchar const * url) { GHtmlConn * conn; if((conn = _ghtmlconn_new(ghtml, stream, url)) == NULL) return -1; g_idle_add(_stream_load_idle, conn); return 0; } static gboolean _stream_load_idle(gpointer data) { GHtmlConn * conn = data; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(%p) \"%s\"\n", __func__, data, conn->url); #endif if(conn->url[0] == '/') return _stream_load_idle_file(conn); if(strncmp(conn->url, "file:", 5) == 0) { strcpy(conn->url, &conn->url[5]); /* XXX no corruption? */ return _stream_load_idle_file(conn); } if(strncmp(conn->url, "http:", 5) == 0) return _stream_load_idle_http(conn); surfer_error(conn->ghtml->surfer, "Unknown protocol", 0); _ghtmlconn_delete(conn); return FALSE; } static gboolean _stream_load_idle_directory(GHtmlConn * conn) { const char tail[] = "\n
\n\n"; char buf[1024]; DIR * dir; struct dirent * de; if((dir = opendir(conn->url)) == NULL) surfer_error(conn->ghtml->surfer, strerror(errno), 0); else { snprintf(buf, sizeof(buf), "%s%s%s%s%s", "" "Index of ", conn->url, "\n" "

Index of ", conn->url, "

\n
\n
    \n"); #ifdef DEBUG fprintf(stderr, "DEBUG: %s", buf); #endif html_stream_write(conn->stream, buf, strlen(buf)); while((de = readdir(dir)) != NULL) { snprintf(buf, sizeof(buf), "%s%s%s%s%s", "
  • d_name, "\">", de->d_name, "
  • \n"); #ifdef DEBUG fprintf(stderr, "DEBUG: %s", buf); #endif html_stream_write(conn->stream, buf, strlen(buf)); } #ifdef DEBUG fprintf(stderr, "DEBUG: %s", tail); #endif html_stream_write(conn->stream, tail, sizeof(tail) - 1); closedir(dir); surfer_set_progress(conn->ghtml->surfer, 1.0); } _ghtmlconn_delete(conn); return FALSE; } static gboolean _stream_load_idle_file(GHtmlConn * conn) { int fd; struct stat st; GIOChannel * channel; surfer_set_progress(conn->ghtml->surfer, 0.0); if((fd = open(conn->url, O_RDONLY)) < 0) { surfer_error(conn->ghtml->surfer, "Not implemented yet", 0); _ghtmlconn_delete(conn); } else { if(fstat(fd, &st) == 0) { if(S_ISDIR(st.st_mode)) { close(fd); return _stream_load_idle_directory(conn); } conn->file_size = st.st_size; } channel = g_io_channel_unix_new(fd); g_io_add_watch(channel, G_IO_IN, _stream_load_watch_file, conn); } return FALSE; } static gboolean _stream_load_watch_file(GIOChannel * source, GIOCondition condition, gpointer data) { GHtmlConn * conn = data; gsize len; char buf[BUFSIZ]; gdouble fraction; if(condition != G_IO_IN) { _ghtmlconn_delete(conn); return FALSE; } if(g_io_channel_read(source, buf, sizeof(buf), &len) != G_IO_ERROR_NONE) { /* FIXME report error */ _ghtmlconn_delete(conn); return FALSE; } if(len == 0) /* no more data */ { _ghtmlconn_delete(conn); return FALSE; } html_stream_write(conn->stream, buf, len); conn->file_read+=len; if(conn->file_size > 0) { fraction = conn->file_read; surfer_set_progress(conn->ghtml->surfer, fraction / conn->file_size); } return TRUE; } static gboolean _stream_load_idle_http(GHtmlConn * conn) { surfer_error(conn->ghtml->surfer, "Not implemented yet", 0); _ghtmlconn_delete(conn); return FALSE; } /* callbacks */ static void _on_link_clicked(HtmlDocument * document, const gchar * url) { GHtml * ghtml; gchar * link; ghtml = g_object_get_data(G_OBJECT(document), "ghtml"); if((link = _ghtml_make_url(ghtml->html_base, url)) == NULL) return; /* FIXME report error */ #ifdef DEBUG fprintf(stderr, "DEBUG: %s(\"%s\") base=\"%s\" => \"%s\"\n", __func__, url, ghtml->html_base, link); #endif _ghtml_document_load(ghtml, link); g_free(link); } static void _on_request_url(HtmlDocument * document, const gchar * url, HtmlStream * stream) { GHtml * ghtml; gchar * link; ghtml = g_object_get_data(G_OBJECT(document), "ghtml"); if((link = _ghtml_make_url(ghtml->html_base, url)) == NULL) return; /* FIXME report error */ #ifdef DEBUG fprintf(stderr, "DEBUG: %s(\"%s\") base=\"%s\" => \"%s\"\n", __func__, url, ghtml->html_base, link); #endif _ghtml_stream_load(ghtml, stream, link); g_free(link); } static void _on_set_base(HtmlDocument * document, const gchar * url) { GHtml * ghtml; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, url); #endif ghtml = g_object_get_data(G_OBJECT(document), "ghtml"); g_free(ghtml->html_base); ghtml->html_base = g_strdup(url); } static void _on_submit(HtmlDocument * document, const gchar * url, const gchar * method, const gchar * encoding) { GHtml * ghtml; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(\"%s\", \"%s\", \"%s\")\n", __func__, url, method, encoding); #endif ghtml = g_object_get_data(G_OBJECT(document), "ghtml"); if(strcmp(method, "GET") == 0) _ghtml_document_load(ghtml, url); else if(strcmp(method, "POST") == 0) _ghtml_document_load(ghtml, url); else { /* FIXME implement */ surfer_error(ghtml->surfer, "Unsupported method", 0); return; } } static void _on_title_changed(HtmlDocument * document, const gchar * title) { GHtml * ghtml; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, title); #endif ghtml = g_object_get_data(G_OBJECT(document), "ghtml"); g_free(ghtml->html_title); ghtml->html_title = g_strdup(title); surfer_set_title(ghtml->surfer, title); }