mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-25 13:37:02 +03:00
24fb50b120
Implement multitasking warning dialog. Warn user if resolvers not set. svn path=/import/netsurf/; revision=841
560 lines
14 KiB
C
560 lines
14 KiB
C
/*
|
|
* This file is part of NetSurf, http://netsurf.sourceforge.net/
|
|
* Licensed under the GNU General Public License,
|
|
* http://www.opensource.org/licenses/gpl-license
|
|
* Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
|
|
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
|
|
*/
|
|
|
|
/** \file
|
|
* Save HTML document with dependencies (implementation).
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <regex.h>
|
|
#include "libxml/HTMLtree.h"
|
|
#include "oslib/osfile.h"
|
|
#include "netsurf/utils/config.h"
|
|
#include "netsurf/content/content.h"
|
|
#include "netsurf/css/css.h"
|
|
#include "netsurf/render/box.h"
|
|
#include "netsurf/riscos/gui.h"
|
|
#include "netsurf/riscos/save_complete.h"
|
|
#include "netsurf/utils/log.h"
|
|
#include "netsurf/utils/url.h"
|
|
#include "netsurf/utils/utils.h"
|
|
|
|
#ifdef WITH_SAVE_COMPLETE
|
|
|
|
regex_t save_complete_import_re;
|
|
|
|
/** An entry in save_complete_list. */
|
|
struct save_complete_entry {
|
|
char *url; /**< Fully qualified URL, as per url_join output */
|
|
int ptr; /**< Pointer to object's location in memory */
|
|
struct save_complete_entry *next; /**< Next entry in list */
|
|
};
|
|
|
|
/** List of urls seen and saved so far. */
|
|
static struct save_complete_entry *save_complete_list;
|
|
|
|
static void save_complete_html(struct content *c, const char *path,
|
|
bool index);
|
|
static void save_imported_sheets(struct content *c, const char *path);
|
|
static char * rewrite_stylesheet_urls(const char *source, unsigned int size,
|
|
int *osize, const char *base);
|
|
static int rewrite_document_urls(xmlDoc *doc, const char *base);
|
|
static int rewrite_urls(xmlNode *n, const char *base);
|
|
static void rewrite_url(xmlNode *n, const char *attr, const char *base);
|
|
static void save_complete_add_url(const char *url, int id);
|
|
static int save_complete_find_url(const char *url);
|
|
|
|
|
|
/**
|
|
* Save an HTML page with all dependencies.
|
|
*
|
|
* \param c CONTENT_HTML to save
|
|
* \param path directory to save to (must exist)
|
|
*/
|
|
|
|
void save_complete(struct content *c, const char *path)
|
|
{
|
|
save_complete_list = 0;
|
|
|
|
save_complete_html(c, path, true);
|
|
|
|
/* free save_complete_list */
|
|
while (save_complete_list) {
|
|
struct save_complete_entry *next = save_complete_list->next;
|
|
free(save_complete_list->url);
|
|
free(save_complete_list);
|
|
save_complete_list = next;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Save an HTML page with all dependencies, recursing through imported pages.
|
|
*
|
|
* \param c CONTENT_HTML to save
|
|
* \param path directory to save to (must exist)
|
|
*/
|
|
|
|
void save_complete_html(struct content *c, const char *path, bool index)
|
|
{
|
|
char spath[256];
|
|
unsigned int i;
|
|
htmlParserCtxtPtr toSave;
|
|
|
|
if (c->type != CONTENT_HTML)
|
|
return;
|
|
|
|
/* save stylesheets, ignoring the base sheet */
|
|
for (i = 1; i != c->data.html.stylesheet_count; i++) {
|
|
struct content *css = c->data.html.stylesheet_content[i];
|
|
char *source;
|
|
int source_len;
|
|
|
|
if (!css)
|
|
continue;
|
|
|
|
save_complete_add_url(css->url, (int) css);
|
|
|
|
save_imported_sheets(css, path);
|
|
|
|
if (i == 1) continue; /* don't save <style> elements */
|
|
|
|
snprintf(spath, sizeof spath, "%s.%x", path,
|
|
(unsigned int) css);
|
|
source = rewrite_stylesheet_urls(css->source_data,
|
|
css->source_size, &source_len, css->url);
|
|
if (source) {
|
|
xosfile_save_stamped(spath, 0xf79, source,
|
|
source + source_len);
|
|
free(source);
|
|
}
|
|
}
|
|
|
|
/* save objects */
|
|
for (i = 0; i != c->data.html.object_count; i++) {
|
|
struct content *obj = c->data.html.object[i].content;
|
|
|
|
/* skip difficult content types */
|
|
if (!obj || obj->type >= CONTENT_OTHER || !obj->source_data)
|
|
continue;
|
|
|
|
save_complete_add_url(obj->url, (int) obj);
|
|
|
|
if (obj->type == CONTENT_HTML) {
|
|
save_complete_html(obj, path, false);
|
|
}
|
|
else {
|
|
snprintf(spath, sizeof spath, "%s.%x", path,
|
|
(unsigned int) obj);
|
|
xosfile_save_stamped(spath,
|
|
ro_content_filetype(obj),
|
|
obj->source_data,
|
|
obj->source_data + obj->source_size);
|
|
}
|
|
}
|
|
|
|
/* make a copy of the document tree */
|
|
toSave = htmlCreateMemoryParserCtxt(c->source_data, c->source_size);
|
|
htmlParseDocument(toSave);
|
|
|
|
/* rewrite all urls we know about */
|
|
if (rewrite_document_urls(toSave->myDoc, c->data.html.base_url) == 0) {
|
|
xfree(spath);
|
|
xmlFreeDoc(toSave->myDoc);
|
|
htmlFreeParserCtxt(toSave);
|
|
return;
|
|
}
|
|
|
|
/* save the html file out last of all */
|
|
if (index)
|
|
snprintf(spath, sizeof spath, "%s.index", path);
|
|
else
|
|
snprintf(spath, sizeof spath, "%s.%x", path, (unsigned int)c);
|
|
htmlSaveFile(spath, toSave->myDoc);
|
|
xosfile_set_type(spath, 0xfaf);
|
|
|
|
xmlFreeDoc(toSave->myDoc);
|
|
htmlFreeParserCtxt(toSave);
|
|
}
|
|
|
|
/**
|
|
* Save all imported stylesheets
|
|
*
|
|
* \param c The content containing the stylesheet
|
|
* \param path Path to save to
|
|
*/
|
|
void save_imported_sheets(struct content *c, const char *path)
|
|
{
|
|
char spath[256];
|
|
unsigned int j;
|
|
char *source;
|
|
int source_len;
|
|
|
|
for (j = 0; j != c->data.css.import_count; j++) {
|
|
struct content *css = c->data.css.import_content[j];
|
|
|
|
if (!css)
|
|
continue;
|
|
|
|
save_complete_add_url(css->url, (int) css);
|
|
|
|
save_imported_sheets(css, path);
|
|
|
|
snprintf(spath, sizeof spath, "%s.%x", path,
|
|
(unsigned int) css);
|
|
source = rewrite_stylesheet_urls(css->source_data,
|
|
css->source_size, &source_len, css->url);
|
|
if (source) {
|
|
xosfile_save_stamped(spath, 0xf79, source,
|
|
source + source_len);
|
|
free(source);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Initialise the save_complete module.
|
|
*/
|
|
|
|
void save_complete_init(void)
|
|
{
|
|
/* Match an @import rule - see CSS 2.1 G.1. */
|
|
regcomp_wrapper(&save_complete_import_re,
|
|
"@import" /* IMPORT_SYM */
|
|
"[ \t\r\n\f]*" /* S* */
|
|
/* 1 */
|
|
"(" /* [ */
|
|
/* 2 3 */
|
|
"\"(([^\"]|[\\]\")*)\"" /* STRING (approximated) */
|
|
"|"
|
|
/* 4 5 */
|
|
"'(([^']|[\\]')*)'"
|
|
"|" /* | */
|
|
"url\\([ \t\r\n\f]*" /* URI (approximated) */
|
|
/* 6 7 */
|
|
"\"(([^\"]|[\\]\")*)\""
|
|
"[ \t\r\n\f]*\\)"
|
|
"|"
|
|
"url\\([ \t\r\n\f]*"
|
|
/* 8 9 */
|
|
"'(([^']|[\\]')*)'"
|
|
"[ \t\r\n\f]*\\)"
|
|
"|"
|
|
"url\\([ \t\r\n\f]*"
|
|
/* 10 */
|
|
"([^) \t\r\n\f]*)"
|
|
"[ \t\r\n\f]*\\)"
|
|
")", /* ] */
|
|
REG_EXTENDED | REG_ICASE);
|
|
}
|
|
|
|
|
|
/**
|
|
* Rewrite stylesheet \@import rules for save complete.
|
|
*
|
|
* @param source stylesheet source
|
|
* @param size size of source
|
|
* @param osize updated with the size of the result
|
|
* @param base url of stylesheet
|
|
* @return converted source, or 0 on error
|
|
*/
|
|
|
|
char * rewrite_stylesheet_urls(const char *source, unsigned int size,
|
|
int *osize, const char *base)
|
|
{
|
|
char *res;
|
|
const char *url;
|
|
char *url2;
|
|
char buf[20];
|
|
unsigned int offset = 0;
|
|
int url_len = 0;
|
|
int id;
|
|
int m;
|
|
unsigned int i;
|
|
unsigned int imports = 0;
|
|
regmatch_t match[11];
|
|
|
|
/* count number occurences of @import to (over)estimate result size */
|
|
/* can't use strstr because source is not 0-terminated string */
|
|
for (i = 0; 7 < size && i != size - 7; i++) {
|
|
if (source[i] == '@' &&
|
|
tolower(source[i + 1]) == 'i' &&
|
|
tolower(source[i + 2]) == 'm' &&
|
|
tolower(source[i + 3]) == 'p' &&
|
|
tolower(source[i + 4]) == 'o' &&
|
|
tolower(source[i + 5]) == 'r' &&
|
|
tolower(source[i + 6]) == 't')
|
|
imports++;
|
|
}
|
|
|
|
res = malloc(size + imports * 20);
|
|
if (!res) {
|
|
warn_user("NoMemory", 0);
|
|
return 0;
|
|
}
|
|
*osize = 0;
|
|
|
|
while (offset < size) {
|
|
m = regexec(&save_complete_import_re, source + offset,
|
|
11, match, 0);
|
|
if (m)
|
|
break;
|
|
|
|
/*for (unsigned int i = 0; i != 11; i++) {
|
|
if (match[i].rm_so == -1)
|
|
continue;
|
|
fprintf(stderr, "%i: '%.*s'\n", i,
|
|
match[i].rm_eo - match[i].rm_so,
|
|
source + offset + match[i].rm_so);
|
|
}*/
|
|
|
|
url = 0;
|
|
if (match[2].rm_so != -1) {
|
|
url = source + offset + match[2].rm_so;
|
|
url_len = match[2].rm_eo - match[2].rm_so;
|
|
} else if (match[4].rm_so != -1) {
|
|
url = source + offset + match[4].rm_so;
|
|
url_len = match[4].rm_eo - match[4].rm_so;
|
|
} else if (match[6].rm_so != -1) {
|
|
url = source + offset + match[6].rm_so;
|
|
url_len = match[6].rm_eo - match[6].rm_so;
|
|
} else if (match[8].rm_so != -1) {
|
|
url = source + offset + match[8].rm_so;
|
|
url_len = match[8].rm_eo - match[8].rm_so;
|
|
} else if (match[10].rm_so != -1) {
|
|
url = source + offset + match[10].rm_so;
|
|
url_len = match[10].rm_eo - match[10].rm_so;
|
|
}
|
|
assert(url);
|
|
|
|
url2 = strndup(url, url_len);
|
|
if (!url2) {
|
|
warn_user("NoMemory", 0);
|
|
free(res);
|
|
return 0;
|
|
}
|
|
url = url_join(url2, base);
|
|
free(url2);
|
|
if (!url) {
|
|
warn_user("NoMemory", 0);
|
|
free(res);
|
|
return 0;
|
|
}
|
|
|
|
/* copy data before match */
|
|
memcpy(res + *osize, source + offset, match[0].rm_so);
|
|
*osize += match[0].rm_so;
|
|
|
|
id = save_complete_find_url(url);
|
|
if (id) {
|
|
/* replace import */
|
|
sprintf(buf, "@import '%x'", id);
|
|
memcpy(res + *osize, buf, strlen(buf));
|
|
*osize += strlen(buf);
|
|
} else {
|
|
/* copy import */
|
|
memcpy(res + *osize, source + offset + match[0].rm_so,
|
|
match[0].rm_eo - match[0].rm_so);
|
|
*osize += match[0].rm_eo - match[0].rm_so;
|
|
}
|
|
|
|
assert(0 < match[0].rm_eo);
|
|
offset += match[0].rm_eo;
|
|
}
|
|
|
|
/* copy rest of source */
|
|
if (offset < size) {
|
|
memcpy(res + *osize, source + offset, size - offset);
|
|
*osize += size - offset;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
/**
|
|
* Rewrite URLs in a HTML document to be relative
|
|
*
|
|
* @param doc The root of the document tree
|
|
* @return 0 on error. >0 otherwise
|
|
* \param base base url of document
|
|
*/
|
|
|
|
int rewrite_document_urls(xmlDoc *doc, const char *base)
|
|
{
|
|
xmlNode *html;
|
|
|
|
/* find the html element */
|
|
for (html = doc->children;
|
|
html!=0 && html->type != XML_ELEMENT_NODE;
|
|
html = html->next)
|
|
;
|
|
if (html == 0 || strcmp((const char*)html->name, "html") != 0) {
|
|
return 0;
|
|
}
|
|
|
|
rewrite_urls(html, base);
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Traverse tree, rewriting URLs as we go.
|
|
*
|
|
* \param base base url of document
|
|
* @param n The root of the tree
|
|
* @return 0 on error. >0 otherwise
|
|
*/
|
|
|
|
int rewrite_urls(xmlNode *n, const char *base)
|
|
{
|
|
xmlNode *this;
|
|
|
|
/**
|
|
* We only need to consider the following cases:
|
|
*
|
|
* Attribute: Elements:
|
|
*
|
|
* 1) data <object>
|
|
* 2) href <a> <area> <link> <base>
|
|
* 3) src <script> <input> <frame> <iframe> <img>
|
|
* 4) n/a <style>
|
|
*/
|
|
if (n->type == XML_ELEMENT_NODE) {
|
|
/* 1 */
|
|
if (strcmp(n->name, "object") == 0) {
|
|
rewrite_url(n, "data", base);
|
|
}
|
|
/* 2 */
|
|
else if (strcmp(n->name, "a") == 0 ||
|
|
strcmp(n->name, "area") == 0 ||
|
|
strcmp(n->name, "link") == 0 ||
|
|
strcmp(n->name, "base") == 0) {
|
|
rewrite_url(n, "href", base);
|
|
}
|
|
/* 3 */
|
|
else if (strcmp(n->name, "frame") == 0 ||
|
|
strcmp(n->name, "iframe") == 0 ||
|
|
strcmp(n->name, "input") == 0 ||
|
|
strcmp(n->name, "img") == 0 ||
|
|
strcmp(n->name, "script") == 0) {
|
|
rewrite_url(n, "src", base);
|
|
}
|
|
/* 4 */
|
|
else if (strcmp(n->name, "style") == 0) {
|
|
unsigned int len;
|
|
xmlChar *content;
|
|
|
|
for (this = n->children; this != 0; this = this->next) {
|
|
/* Get current content */
|
|
content = xmlNodeGetContent(this);
|
|
if (!content) continue;
|
|
|
|
/* Rewrite @import rules */
|
|
char *rewritten = rewrite_stylesheet_urls(
|
|
content,
|
|
strlen((char*)content),
|
|
&len, base);
|
|
if (!rewritten) {
|
|
xmlFree(content);
|
|
continue;
|
|
}
|
|
|
|
/* set new content */
|
|
xmlNodeSetContentLen(this,
|
|
(const xmlChar*)rewritten,
|
|
len);
|
|
|
|
/* free old content */
|
|
xmlFree(content);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
else {
|
|
return 0;
|
|
}
|
|
|
|
/* now recurse */
|
|
for (this = n->children; this != 0; this = this->next) {
|
|
rewrite_urls(this, base);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Rewrite an URL in a HTML document.
|
|
*
|
|
* \param n The node to modify
|
|
* \param attr The html attribute to modify
|
|
* \param base base url of document
|
|
*/
|
|
|
|
void rewrite_url(xmlNode *n,const char *attr, const char *base)
|
|
{
|
|
char *url, *data;
|
|
char rel[256];
|
|
int id;
|
|
|
|
data = xmlGetProp(n, (const xmlChar*)attr);
|
|
|
|
if (!data) return;
|
|
|
|
url = url_join(data, base);
|
|
if (!url) {
|
|
xmlFree(data);
|
|
return;
|
|
}
|
|
|
|
id = save_complete_find_url(url);
|
|
if (id) {
|
|
/* found a match */
|
|
snprintf(rel, sizeof rel, "%x", id);
|
|
xmlSetProp(n, (const xmlChar *) attr, (xmlChar *) rel);
|
|
} else {
|
|
/* no match found */
|
|
xmlSetProp(n, (const xmlChar *) attr, (xmlChar *) url);
|
|
}
|
|
|
|
free(url);
|
|
xmlFree(data);
|
|
}
|
|
|
|
|
|
/**
|
|
* Add a url to the save_complete_list.
|
|
*
|
|
* \param url url to add (copied)
|
|
* \param id id to use for url
|
|
*/
|
|
|
|
void save_complete_add_url(const char *url, int id)
|
|
{
|
|
struct save_complete_entry *entry;
|
|
entry = malloc(sizeof (*entry));
|
|
if (!entry)
|
|
return;
|
|
entry->url = strdup(url);
|
|
if (!url) {
|
|
free(entry);
|
|
return;
|
|
}
|
|
entry->ptr = id;
|
|
entry->next = save_complete_list;
|
|
save_complete_list = entry;
|
|
}
|
|
|
|
|
|
/**
|
|
* Look up a url in the save_complete_list.
|
|
*
|
|
* \param url url to find
|
|
* \param len length of url
|
|
* \return id to use for url, or 0 if not present
|
|
*/
|
|
|
|
int save_complete_find_url(const char *url)
|
|
{
|
|
struct save_complete_entry *entry;
|
|
for (entry = save_complete_list; entry; entry = entry->next)
|
|
if (strcmp(url, entry->url) == 0)
|
|
break;
|
|
if (entry)
|
|
return entry->ptr;
|
|
return 0;
|
|
}
|
|
|
|
#endif
|