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ui-shared: restrict to 15 levels
[cgit.git] / ui-plain.c
diff --git a/ui-plain.c b/ui-plain.c
index f73cd14e8e56e3b080fe73a647c5ff91ed2f58ed..070c34bccec5be20feb66379ab0f5ec777b991de 100644 (file)
--- a/ui-plain.c
+++ b/ui-plain.c
@@ -1,80 +1,206 @@
 /* ui-plain.c: functions for output of plain blobs by path
  *
 /* ui-plain.c: functions for output of plain blobs by path
  *
- * Copyright (C) 2008 Lars Hjemli
+ * 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"
  *
  * 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"
 
 #include "html.h"
 #include "ui-shared.h"
 
-char *curr_rev;
-char *match_path;
-int match;
+struct walk_tree_context {
+       int match_baselen;
+       int match;
+};
 
 
-static void print_object(const unsigned char *sha1, const char *path)
+static int print_object(const struct object_id *oid, const char *path)
 {
        enum object_type type;
 {
        enum object_type type;
-       char *buf;
+       char *buf, *mimetype;
        unsigned long size;
 
        unsigned long size;
 
-       type = sha1_object_info(sha1, &size);
+       type = oid_object_info(the_repository, oid, &size);
        if (type == OBJ_BAD) {
        if (type == OBJ_BAD) {
-               html_status(404, "Not found", 0);
-               return;
+               cgit_print_error_page(404, "Not found", "Not found");
+               return 0;
        }
 
        }
 
-       buf = read_sha1_file(sha1, &type, &size);
+       buf = read_object_file(oid, &type, &size);
        if (!buf) {
        if (!buf) {
-               html_status(404, "Not found", 0);
-               return;
+               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.mimetype = "text/plain";
-       ctx.page.filename = fmt("%s", path);
+       ctx.page.filename = path;
        ctx.page.size = size;
        ctx.page.size = size;
-       ctx.page.etag = sha1_to_hex(sha1);
-       cgit_print_http_headers(&ctx);
+       ctx.page.etag = oid_to_hex(oid);
+       cgit_print_http_headers();
        html_raw(buf, size);
        html_raw(buf, size);
-       match = 1;
+       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 struct object_id *oid, 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 = oid_to_hex(oid);
+       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 struct object_id *oid, 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, oid_to_hex(oid));
+       } 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, const char *base, int baselen,
-                    const char *pathname, unsigned mode, int stage,
-                    void *cbdata)
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
+               const char *pathname, unsigned mode, int stage, void *cbdata)
 {
 {
-       if (S_ISDIR(mode))
+       struct walk_tree_context *walk_tree_ctx = cbdata;
+
+       if (base->len == walk_tree_ctx->match_baselen) {
+               if (S_ISREG(mode) || S_ISLNK(mode)) {
+                       if (print_object(oid, pathname))
+                               walk_tree_ctx->match = 1;
+               } else if (S_ISDIR(mode)) {
+                       print_dir(oid, 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(oid, base->buf, base->len, pathname, mode);
+               walk_tree_ctx->match = 2;
+       } else if (S_ISDIR(mode)) {
                return READ_TREE_RECURSIVE;
                return READ_TREE_RECURSIVE;
+       }
 
 
-       if (S_ISREG(mode))
-               print_object(sha1, pathname);
+       return 0;
+}
 
 
+static int basedir_len(const char *path)
+{
+       char *p = strrchr(path, '/');
+       if (p)
+               return p - path + 1;
        return 0;
 }
 
        return 0;
 }
 
-void cgit_print_plain(struct cgit_context *ctx)
+void cgit_print_plain(void)
 {
 {
-       const char *rev = ctx->qry.sha1;
-       unsigned char sha1[20];
+       const char *rev = ctx.qry.sha1;
+       struct object_id oid;
        struct commit *commit;
        struct commit *commit;
-       const char *paths[] = {ctx->qry.path, NULL};
+       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)
 
        if (!rev)
-               rev = ctx->qry.head;
+               rev = ctx.qry.head;
 
 
-       curr_rev = xstrdup(rev);
-       if (get_sha1(rev, sha1)) {
-               html_status(404, "Not found", 0);
+       if (get_oid(rev, &oid)) {
+               cgit_print_error_page(404, "Not found", "Not found");
                return;
        }
                return;
        }
-       commit = lookup_commit_reference(sha1);
+       commit = lookup_commit_reference(the_repository, &oid);
        if (!commit || parse_commit(commit)) {
        if (!commit || parse_commit(commit)) {
-               html_status(404, "Not found", 0);
+               cgit_print_error_page(404, "Not found", "Not found");
                return;
        }
                return;
        }
-       match_path = ctx->qry.path;
-       read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree, NULL);
-       if (!match)
-               html_status(404, "Not found", 0);
+       if (!path_items.match) {
+               path_items.match = "";
+               walk_tree_ctx.match_baselen = -1;
+               print_dir(&commit->maybe_tree->object.oid, "", 0, "");
+               walk_tree_ctx.match = 2;
+       }
+       else
+               walk_tree_ctx.match_baselen = basedir_len(path_items.match);
+       read_tree_recursive(commit->maybe_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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