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/* ui-plain.c: functions for output of plain blobs by path
*
* Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#include "cgit.h"
#include "ui-plain.h"
#include "html.h"
#include "ui-shared.h"
struct walk_tree_context {
int match_baselen;
int match;
};
static int print_object(const unsigned char *sha1, const char *path)
{
enum object_type type;
char *buf, *mimetype;
unsigned long size;
type = sha1_object_info(sha1, &size);
if (type == OBJ_BAD) {
cgit_print_error_page(404, "Not found", "Not found");
return 0;
}
buf = read_sha1_file(sha1, &type, &size);
if (!buf) {
cgit_print_error_page(404, "Not found", "Not found");
return 0;
}
mimetype = get_mimetype_for_filename(path);
ctx.page.mimetype = mimetype;
if (!ctx.repo->enable_html_serving) {
html("X-Content-Type-Options: nosniff\n");
html("Content-Security-Policy: default-src 'none'\n");
if (mimetype) {
/* Built-in white list allows PDF and everything that isn't text/ and application/ */
if ((!strncmp(mimetype, "text/", 5) || !strncmp(mimetype, "application/", 12)) && strcmp(mimetype, "application/pdf"))
ctx.page.mimetype = NULL;
}
}
if (!ctx.page.mimetype) {
if (buffer_is_binary(buf, size)) {
ctx.page.mimetype = "application/octet-stream";
ctx.page.charset = NULL;
} else {
ctx.page.mimetype = "text/plain";
}
}
ctx.page.filename = path;
ctx.page.size = size;
ctx.page.etag = sha1_to_hex(sha1);
cgit_print_http_headers();
html_raw(buf, size);
free(mimetype);
free(buf);
return 1;
}
static char *buildpath(const char *base, int baselen, const char *path)
{
if (path[0])
return fmtalloc("%.*s%s/", baselen, base, path);
else
return fmtalloc("%.*s/", baselen, base);
}
static void print_dir(const unsigned char *sha1, const char *base,
int baselen, const char *path)
{
char *fullpath, *slash;
size_t len;
fullpath = buildpath(base, baselen, path);
slash = (fullpath[0] == '/' ? "" : "/");
ctx.page.etag = sha1_to_hex(sha1);
cgit_print_http_headers();
htmlf("<html><head><title>%s", slash);
html_txt(fullpath);
htmlf("</title></head>\n<body>\n<h2>%s", slash);
html_txt(fullpath);
html("</h2>\n<ul>\n");
len = strlen(fullpath);
if (len > 1) {
fullpath[len - 1] = 0;
slash = strrchr(fullpath, '/');
if (slash)
*(slash + 1) = 0;
else {
free(fullpath);
fullpath = NULL;
}
html("<li>");
cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
fullpath);
html("</li>\n");
}
free(fullpath);
}
static void print_dir_entry(const unsigned char *sha1, const char *base,
int baselen, const char *path, unsigned mode)
{
char *fullpath;
fullpath = buildpath(base, baselen, path);
if (!S_ISDIR(mode) && !S_ISGITLINK(mode))
fullpath[strlen(fullpath) - 1] = 0;
html(" <li>");
if (S_ISGITLINK(mode)) {
cgit_submodule_link(NULL, fullpath, sha1_to_hex(sha1));
} else
cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
fullpath);
html("</li>\n");
free(fullpath);
}
static void print_dir_tail(void)
{
html(" </ul>\n</body></html>\n");
}
static int walk_tree(const unsigned char *sha1, struct strbuf *base,
const char *pathname, unsigned mode, int stage, void *cbdata)
{
struct walk_tree_context *walk_tree_ctx = cbdata;
if (base->len == walk_tree_ctx->match_baselen) {
if (S_ISREG(mode)) {
if (print_object(sha1, pathname))
walk_tree_ctx->match = 1;
} else if (S_ISDIR(mode)) {
print_dir(sha1, base->buf, base->len, pathname);
walk_tree_ctx->match = 2;
return READ_TREE_RECURSIVE;
}
} else if (base->len < INT_MAX && (int)base->len > walk_tree_ctx->match_baselen) {
print_dir_entry(sha1, base->buf, base->len, pathname, mode);
walk_tree_ctx->match = 2;
} else if (S_ISDIR(mode)) {
return READ_TREE_RECURSIVE;
}
return 0;
}
static int basedir_len(const char *path)
{
char *p = strrchr(path, '/');
if (p)
return p - path + 1;
return 0;
}
void cgit_print_plain(void)
{
const char *rev = ctx.qry.sha1;
struct object_id oid;
struct commit *commit;
struct pathspec_item path_items = {
.match = ctx.qry.path,
.len = ctx.qry.path ? strlen(ctx.qry.path) : 0
};
struct pathspec paths = {
.nr = 1,
.items = &path_items
};
struct walk_tree_context walk_tree_ctx = {
.match = 0
};
if (!rev)
rev = ctx.qry.head;
if (get_oid(rev, &oid)) {
cgit_print_error_page(404, "Not found", "Not found");
return;
}
commit = lookup_commit_reference(&oid);
if (!commit || parse_commit(commit)) {
cgit_print_error_page(404, "Not found", "Not found");
return;
}
if (!path_items.match) {
path_items.match = "";
walk_tree_ctx.match_baselen = -1;
print_dir(commit->tree->object.oid.hash, "", 0, "");
walk_tree_ctx.match = 2;
}
else
walk_tree_ctx.match_baselen = basedir_len(path_items.match);
read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
if (!walk_tree_ctx.match)
cgit_print_error_page(404, "Not found", "Not found");
else if (walk_tree_ctx.match == 2)
print_dir_tail();
}
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