Archives/ohwgiles_laminar
1
0
Fork 0
mirror of https://github.com/ohwgiles/laminar.git synced 2026-09-23 20:36:43 +00:00
Code Issues Projects Releases Wiki Activity

resolves #80: reverse-proxy with custom base URL

Browse Source 
Fix all hrefs and vue routes to correctly operate against the
<base href> tag. Add a configuration parameter to override the
content of the href attribute, and describe its use.
This commit is contained in:
Oliver Giles
2019-03-29 22:43:16 +03:00
parent 210787a352
commit 95482c78a5
7 changed files with 82 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
src/resources.cpp
View File

@@ -1,5 +1,5 @@
///
/// Copyright 2015-2017 Oliver Giles
/// Copyright 2015-2019 Oliver Giles
///
/// This file is part of Laminar
///
@@ -17,7 +17,10 @@
/// along with Laminar. If not, see <http://www.gnu.org/licenses/>
///
#include "resources.h"
#include "log.h"
#include "index_html_size.h"
#include <string.h>
#include <zlib.h>
#define INIT_RESOURCE(route, name, content_type) \
extern const char _binary_##name##_z_start[];\
@@ -30,6 +33,8 @@
#define CONTENT_TYPE_JS "application/javascript; charset=utf-8"
#define CONTENT_TYPE_CSS "text/css; charset=utf-8"
#define GZIP_FORMAT 16
Resources::Resources()
{
INIT_RESOURCE("/", index_html, CONTENT_TYPE_HTML);
@@ -43,6 +48,46 @@ Resources::Resources()
INIT_RESOURCE("/js/ansi_up.js", js_ansi_up_js, CONTENT_TYPE_JS);
INIT_RESOURCE("/js/Chart.min.js", js_Chart_min_js, CONTENT_TYPE_JS);
INIT_RESOURCE("/css/bootstrap.min.css", css_bootstrap_min_css, CONTENT_TYPE_CSS);
if(const char* baseUrl = getenv("LAMINAR_BASE_URL")) {
// The administrator needs to customize the <base href>. Unfortunately this seems
// to be the only thing that needs to be customizable but cannot be done via dynamic
// DOM manipulation without heavy compromises. So replace the static char array with
// a modified buffer accordingly.
z_stream strm;
memset(&strm, 0, sizeof(z_stream));
std::string tmp;
tmp.resize(INDEX_HTML_UNCOMPRESSED_SIZE);
// inflate
inflateInit2(&strm, MAX_WBITS|GZIP_FORMAT);
strm.next_in = (unsigned char*) _binary_index_html_z_start;
strm.avail_in = _binary_index_html_z_end - _binary_index_html_z_start;
strm.next_out = (unsigned char*) tmp.data();
strm.avail_out = INDEX_HTML_UNCOMPRESSED_SIZE;
if(inflate(&strm, Z_FINISH) != Z_STREAM_END) {
LLOG(FATAL, "Failed to uncompress index_html");
}
// replace
// There's no validation on the replacement string, so you can completely mangle
// the html if you like. This isn't really an issue because if you can modify laminar's
// environment you already have elevated permissions
if(auto it = tmp.find("base href=\"/"))
tmp.replace(it+11, 1, baseUrl);
// deflate
index_html.resize(tmp.size());
deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, MAX_WBITS|GZIP_FORMAT, 8, Z_DEFAULT_STRATEGY);
strm.next_in = (unsigned char*) tmp.data();
strm.avail_in = tmp.size();
strm.next_out = (unsigned char*) index_html.data();
strm.avail_out = tmp.size();
if(deflate(&strm, Z_FINISH) != Z_STREAM_END) {
LLOG(FATAL, "Failed to compress index.html");
}
index_html.resize(strm.total_out);
// update resource map
resources["/"].start = index_html.data();
resources["/"].end = index_html.data() + index_html.size();
}
}
inline bool beginsWith(std::string haystack, const char* needle) {