ui-shared: use the same snapshot logic as ui-refs

[cgit.git] / ui-plain.c

diff --git a/ui-plain.c b/ui-plain.c
index 3a2cb477ecd99e3ad317c0e72cfdbb98b34cb9d6..cfdbf730db0772ec2adf99d775434577d371199d 100644 (file)
--- a/ui-plain.c
+++ b/ui-plain.c
@@ -16,81 +16,37 @@ struct walk_tree_context {
        int match;
 };
 
-static char *get_mimetype_from_file(const char *filename, const char *ext)
-{
-       static const char *delimiters;
-       char *result;
-       FILE *fd;
-       char line[1024];
-       char *mimetype;
-       char *token;
-
-       if (!filename)
-               return NULL;
-
-       fd = fopen(filename, "r");
-       if (!fd)
-               return NULL;
-
-       delimiters = " \t\r\n";
-       result = NULL;
-
-       /* loop over all lines in the file */
-       while (!result && fgets(line, sizeof(line), fd)) {
-               mimetype = strtok(line, delimiters);
-
-               /* skip empty lines and comment lines */
-               if (!mimetype || (mimetype[0] == '#'))
-                       continue;
-
-               /* loop over all extensions of mimetype */
-               while ((token = strtok(NULL, delimiters))) {
-                       if (!strcasecmp(ext, token)) {
-                               result = xstrdup(mimetype);
-                               break;
-                       }
-               }
-       }
-       fclose(fd);
-
-       return result;
-}
-
 static int print_object(const unsigned char *sha1, const char *path)
 {
        enum object_type type;
-       char *buf, *ext;
+       char *buf, *mimetype;
        unsigned long size;
-       struct string_list_item *mime;
-       int freemime;
 
        type = sha1_object_info(sha1, &size);
        if (type == OBJ_BAD) {
-               html_status(404, "Not found", 0);
+               cgit_print_error_page(404, "Not found", "Not found");
                return 0;
        }
 
        buf = read_sha1_file(sha1, &type, &size);
        if (!buf) {
-               html_status(404, "Not found", 0);
+               cgit_print_error_page(404, "Not found", "Not found");
                return 0;
        }
-       ctx.page.mimetype = NULL;
-       ext = strrchr(path, '.');
-       freemime = 0;
-       if (ext && *(++ext)) {
-               mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
-               if (mime) {
-                       ctx.page.mimetype = (char *)mime->util;
-                       ctx.page.charset = NULL;
-               } else {
-                       ctx.page.mimetype = get_mimetype_from_file(ctx.cfg.mimetype_file, ext);
-                       if (ctx.page.mimetype) {
-                               freemime = 1;
-                               ctx.page.charset = NULL;
-                       }
+
+       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";
@@ -104,9 +60,8 @@ static int print_object(const unsigned char *sha1, const char *path)
        ctx.page.etag = sha1_to_hex(sha1);
        cgit_print_http_headers();
        html_raw(buf, size);
-       /* If we allocated this, then casting away const is safe. */
-       if (freemime)
-               free((char*) ctx.page.mimetype);
+       free(mimetype);
+       free(buf);
        return 1;
 }
 
@@ -139,8 +94,10 @@ static void print_dir(const unsigned char *sha1, const char *base,
                slash = strrchr(fullpath, '/');
                if (slash)
                        *(slash + 1) = 0;
-               else
+               else {
+                       free(fullpath);
                        fullpath = NULL;
+               }
                html("<li>");
                cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
                                fullpath);
@@ -178,7 +135,7 @@ static int walk_tree(const unsigned char *sha1, struct strbuf *base,
        struct walk_tree_context *walk_tree_ctx = cbdata;
 
        if (base->len == walk_tree_ctx->match_baselen) {
-               if (S_ISREG(mode)) {
+               if (S_ISREG(mode) || S_ISLNK(mode)) {
                        if (print_object(sha1, pathname))
                                walk_tree_ctx->match = 1;
                } else if (S_ISDIR(mode)) {
@@ -186,7 +143,7 @@ static int walk_tree(const unsigned char *sha1, struct strbuf *base,
                        walk_tree_ctx->match = 2;
                        return READ_TREE_RECURSIVE;
                }
-       } else if (base->len > walk_tree_ctx->match_baselen) {
+       } 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)) {
@@ -207,7 +164,7 @@ static int basedir_len(const char *path)
 void cgit_print_plain(void)
 {
        const char *rev = ctx.qry.sha1;
-       unsigned char sha1[20];
+       struct object_id oid;
        struct commit *commit;
        struct pathspec_item path_items = {
                .match = ctx.qry.path,
@@ -224,26 +181,26 @@ void cgit_print_plain(void)
        if (!rev)
                rev = ctx.qry.head;
 
-       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;
        }
-       commit = lookup_commit_reference(sha1);
+       commit = lookup_commit_reference(&oid);
        if (!commit || parse_commit(commit)) {
-               html_status(404, "Not found", 0);
+               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.sha1, "", 0, "");
+               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)
-               html_status(404, "Not found", 0);
+               cgit_print_error_page(404, "Not found", "Not found");
        else if (walk_tree_ctx.match == 2)
                print_dir_tail();
 }