ui-shared: don't print path crumbs without a repo

[ps-cgit] / cgit.c

diff --git a/cgit.c b/cgit.c
index 1b85b1518818e47b2780f87e8a47081c05a38668..1075753e15b4de5672aa8445fcc86ef4e7079a92 100644 (file)
--- a/cgit.c
+++ b/cgit.c
@@ -1,256 +1,1099 @@
 /* cgit.c: cgi for the git scm
  *
 /* cgit.c: cgi for the git scm
  *

- * Copyright (C) 2006 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 "cache.h"
+#include "cmd.h"
+#include "configfile.h"
+#include "html.h"
+#include "ui-shared.h"
+#include "ui-stats.h"
+#include "ui-blob.h"
+#include "ui-summary.h"
+#include "scan-tree.h"

 
 

-static int cgit_prepare_cache(struct cacheitem *item)
+const char *cgit_version = CGIT_VERSION;
+
+static void add_mimetype(const char *name, const char *value)

 {
 {

-       if (!cgit_repo && cgit_query_repo) {
-               char *title = fmt("%s - %s", cgit_root_title, "Bad request");
-               cgit_print_docstart(title, item);
-               cgit_print_pageheader(title, 0);
-               cgit_print_error(fmt("Unknown repo: %s", cgit_query_repo));
-               cgit_print_docend();
-               return 0;
+       struct string_list_item *item;
+
+       item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
+       item->util = xstrdup(value);
+}
+
+static void process_cached_repolist(const char *path);
+
+static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
+{
+       const char *path;
+       struct string_list_item *item;
+
+       if (!strcmp(name, "name"))
+               repo->name = xstrdup(value);
+       else if (!strcmp(name, "clone-url"))
+               repo->clone_url = xstrdup(value);
+       else if (!strcmp(name, "desc"))
+               repo->desc = xstrdup(value);
+       else if (!strcmp(name, "owner"))
+               repo->owner = xstrdup(value);
+       else if (!strcmp(name, "homepage"))
+               repo->homepage = xstrdup(value);
+       else if (!strcmp(name, "defbranch"))
+               repo->defbranch = xstrdup(value);
+       else if (!strcmp(name, "snapshots"))
+               repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
+       else if (!strcmp(name, "enable-commit-graph"))
+               repo->enable_commit_graph = atoi(value);
+       else if (!strcmp(name, "enable-log-filecount"))
+               repo->enable_log_filecount = atoi(value);
+       else if (!strcmp(name, "enable-log-linecount"))
+               repo->enable_log_linecount = atoi(value);
+       else if (!strcmp(name, "enable-remote-branches"))
+               repo->enable_remote_branches = atoi(value);
+       else if (!strcmp(name, "enable-subject-links"))
+               repo->enable_subject_links = atoi(value);
+       else if (!strcmp(name, "enable-html-serving"))
+               repo->enable_html_serving = atoi(value);
+       else if (!strcmp(name, "branch-sort")) {
+               if (!strcmp(value, "age"))
+                       repo->branch_sort = 1;
+               if (!strcmp(value, "name"))
+                       repo->branch_sort = 0;
+       } else if (!strcmp(name, "commit-sort")) {
+               if (!strcmp(value, "date"))
+                       repo->commit_sort = 1;
+               if (!strcmp(value, "topo"))
+                       repo->commit_sort = 2;
+       } else if (!strcmp(name, "max-stats"))
+               repo->max_stats = cgit_find_stats_period(value, NULL);
+       else if (!strcmp(name, "module-link"))
+               repo->module_link= xstrdup(value);
+       else if (skip_prefix(name, "module-link.", &path)) {
+               item = string_list_append(&repo->submodules, xstrdup(path));
+               item->util = xstrdup(value);
+       } else if (!strcmp(name, "section"))
+               repo->section = xstrdup(value);
+       else if (!strcmp(name, "readme") && value != NULL) {
+               if (repo->readme.items == ctx.cfg.readme.items)
+                       memset(&repo->readme, 0, sizeof(repo->readme));
+               string_list_append(&repo->readme, xstrdup(value));
+       } else if (!strcmp(name, "logo") && value != NULL)
+               repo->logo = xstrdup(value);
+       else if (!strcmp(name, "logo-link") && value != NULL)
+               repo->logo_link = xstrdup(value);
+       else if (!strcmp(name, "hide"))
+               repo->hide = atoi(value);
+       else if (!strcmp(name, "ignore"))
+               repo->ignore = atoi(value);
+       else if (ctx.cfg.enable_filter_overrides) {
+               if (!strcmp(name, "about-filter"))
+                       repo->about_filter = cgit_new_filter(value, ABOUT);
+               else if (!strcmp(name, "commit-filter"))
+                       repo->commit_filter = cgit_new_filter(value, COMMIT);
+               else if (!strcmp(name, "source-filter"))
+                       repo->source_filter = cgit_new_filter(value, SOURCE);
+               else if (!strcmp(name, "email-filter"))
+                       repo->email_filter = cgit_new_filter(value, EMAIL);
+               else if (!strcmp(name, "owner-filter"))
+                       repo->owner_filter = cgit_new_filter(value, OWNER);

        }
        }

+}

 
 

-       if (!cgit_repo) {
-               item->name = xstrdup(fmt("%s/index.html", cgit_cache_root));
-               item->ttl = cgit_cache_root_ttl;
-               return 1;
+static void config_cb(const char *name, const char *value)
+{
+       const char *arg;
+
+       if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
+               ctx.cfg.section = xstrdup(value);
+       else if (!strcmp(name, "repo.url"))
+               ctx.repo = cgit_add_repo(value);
+       else if (ctx.repo && !strcmp(name, "repo.path"))
+               ctx.repo->path = trim_end(value, '/');
+       else if (ctx.repo && skip_prefix(name, "repo.", &arg))
+               repo_config(ctx.repo, arg, value);
+       else if (!strcmp(name, "readme"))
+               string_list_append(&ctx.cfg.readme, xstrdup(value));
+       else if (!strcmp(name, "root-title"))
+               ctx.cfg.root_title = xstrdup(value);
+       else if (!strcmp(name, "root-desc"))
+               ctx.cfg.root_desc = xstrdup(value);
+       else if (!strcmp(name, "root-readme"))
+               ctx.cfg.root_readme = xstrdup(value);
+       else if (!strcmp(name, "css"))
+               ctx.cfg.css = xstrdup(value);
+       else if (!strcmp(name, "favicon"))
+               ctx.cfg.favicon = xstrdup(value);
+       else if (!strcmp(name, "footer"))
+               ctx.cfg.footer = xstrdup(value);
+       else if (!strcmp(name, "head-include"))
+               ctx.cfg.head_include = xstrdup(value);
+       else if (!strcmp(name, "header"))
+               ctx.cfg.header = xstrdup(value);
+       else if (!strcmp(name, "logo"))
+               ctx.cfg.logo = xstrdup(value);
+       else if (!strcmp(name, "index-header"))
+               ctx.cfg.index_header = xstrdup(value);
+       else if (!strcmp(name, "index-info"))
+               ctx.cfg.index_info = xstrdup(value);
+       else if (!strcmp(name, "logo-link"))
+               ctx.cfg.logo_link = xstrdup(value);
+       else if (!strcmp(name, "module-link"))
+               ctx.cfg.module_link = xstrdup(value);
+       else if (!strcmp(name, "strict-export"))
+               ctx.cfg.strict_export = xstrdup(value);
+       else if (!strcmp(name, "virtual-root")) {
+               ctx.cfg.virtual_root = ensure_end(value, '/');
+       } else if (!strcmp(name, "nocache"))
+               ctx.cfg.nocache = atoi(value);
+       else if (!strcmp(name, "noplainemail"))
+               ctx.cfg.noplainemail = atoi(value);
+       else if (!strcmp(name, "noheader"))
+               ctx.cfg.noheader = atoi(value);
+       else if (!strcmp(name, "snapshots"))
+               ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
+       else if (!strcmp(name, "enable-filter-overrides"))
+               ctx.cfg.enable_filter_overrides = atoi(value);
+       else if (!strcmp(name, "enable-follow-links"))
+               ctx.cfg.enable_follow_links = atoi(value);
+       else if (!strcmp(name, "enable-http-clone"))
+               ctx.cfg.enable_http_clone = atoi(value);
+       else if (!strcmp(name, "enable-index-links"))
+               ctx.cfg.enable_index_links = atoi(value);
+       else if (!strcmp(name, "enable-index-owner"))
+               ctx.cfg.enable_index_owner = atoi(value);
+       else if (!strcmp(name, "enable-commit-graph"))
+               ctx.cfg.enable_commit_graph = atoi(value);
+       else if (!strcmp(name, "enable-log-filecount"))
+               ctx.cfg.enable_log_filecount = atoi(value);
+       else if (!strcmp(name, "enable-log-linecount"))
+               ctx.cfg.enable_log_linecount = atoi(value);
+       else if (!strcmp(name, "enable-remote-branches"))
+               ctx.cfg.enable_remote_branches = atoi(value);
+       else if (!strcmp(name, "enable-subject-links"))
+               ctx.cfg.enable_subject_links = atoi(value);
+       else if (!strcmp(name, "enable-html-serving"))
+               ctx.cfg.enable_html_serving = atoi(value);
+       else if (!strcmp(name, "enable-tree-linenumbers"))
+               ctx.cfg.enable_tree_linenumbers = atoi(value);
+       else if (!strcmp(name, "enable-git-config"))
+               ctx.cfg.enable_git_config = atoi(value);
+       else if (!strcmp(name, "max-stats"))
+               ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
+       else if (!strcmp(name, "cache-size"))
+               ctx.cfg.cache_size = atoi(value);
+       else if (!strcmp(name, "cache-root"))
+               ctx.cfg.cache_root = xstrdup(expand_macros(value));
+       else if (!strcmp(name, "cache-root-ttl"))
+               ctx.cfg.cache_root_ttl = atoi(value);
+       else if (!strcmp(name, "cache-repo-ttl"))
+               ctx.cfg.cache_repo_ttl = atoi(value);
+       else if (!strcmp(name, "cache-scanrc-ttl"))
+               ctx.cfg.cache_scanrc_ttl = atoi(value);
+       else if (!strcmp(name, "cache-static-ttl"))
+               ctx.cfg.cache_static_ttl = atoi(value);
+       else if (!strcmp(name, "cache-dynamic-ttl"))
+               ctx.cfg.cache_dynamic_ttl = atoi(value);
+       else if (!strcmp(name, "cache-about-ttl"))
+               ctx.cfg.cache_about_ttl = atoi(value);
+       else if (!strcmp(name, "cache-snapshot-ttl"))
+               ctx.cfg.cache_snapshot_ttl = atoi(value);
+       else if (!strcmp(name, "case-sensitive-sort"))
+               ctx.cfg.case_sensitive_sort = atoi(value);
+       else if (!strcmp(name, "about-filter"))
+               ctx.cfg.about_filter = cgit_new_filter(value, ABOUT);
+       else if (!strcmp(name, "commit-filter"))
+               ctx.cfg.commit_filter = cgit_new_filter(value, COMMIT);
+       else if (!strcmp(name, "email-filter"))
+               ctx.cfg.email_filter = cgit_new_filter(value, EMAIL);
+       else if (!strcmp(name, "owner-filter"))
+               ctx.cfg.owner_filter = cgit_new_filter(value, OWNER);
+       else if (!strcmp(name, "auth-filter"))
+               ctx.cfg.auth_filter = cgit_new_filter(value, AUTH);
+       else if (!strcmp(name, "embedded"))
+               ctx.cfg.embedded = atoi(value);
+       else if (!strcmp(name, "max-atom-items"))
+               ctx.cfg.max_atom_items = atoi(value);
+       else if (!strcmp(name, "max-message-length"))
+               ctx.cfg.max_msg_len = atoi(value);
+       else if (!strcmp(name, "max-repodesc-length"))
+               ctx.cfg.max_repodesc_len = atoi(value);
+       else if (!strcmp(name, "max-blob-size"))
+               ctx.cfg.max_blob_size = atoi(value);
+       else if (!strcmp(name, "max-repo-count"))
+               ctx.cfg.max_repo_count = atoi(value);
+       else if (!strcmp(name, "max-commit-count"))
+               ctx.cfg.max_commit_count = atoi(value);
+       else if (!strcmp(name, "project-list"))
+               ctx.cfg.project_list = xstrdup(expand_macros(value));
+       else if (!strcmp(name, "scan-path"))
+               if (!ctx.cfg.nocache && ctx.cfg.cache_size)
+                       process_cached_repolist(expand_macros(value));
+               else if (ctx.cfg.project_list)
+                       scan_projects(expand_macros(value),
+                                     ctx.cfg.project_list, repo_config);
+               else
+                       scan_tree(expand_macros(value), repo_config);
+       else if (!strcmp(name, "scan-hidden-path"))
+               ctx.cfg.scan_hidden_path = atoi(value);
+       else if (!strcmp(name, "section-from-path"))
+               ctx.cfg.section_from_path = atoi(value);
+       else if (!strcmp(name, "repository-sort"))
+               ctx.cfg.repository_sort = xstrdup(value);
+       else if (!strcmp(name, "section-sort"))
+               ctx.cfg.section_sort = atoi(value);
+       else if (!strcmp(name, "source-filter"))
+               ctx.cfg.source_filter = cgit_new_filter(value, SOURCE);
+       else if (!strcmp(name, "summary-log"))
+               ctx.cfg.summary_log = atoi(value);
+       else if (!strcmp(name, "summary-branches"))
+               ctx.cfg.summary_branches = atoi(value);
+       else if (!strcmp(name, "summary-tags"))
+               ctx.cfg.summary_tags = atoi(value);
+       else if (!strcmp(name, "side-by-side-diffs"))
+               ctx.cfg.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
+       else if (!strcmp(name, "agefile"))
+               ctx.cfg.agefile = xstrdup(value);
+       else if (!strcmp(name, "mimetype-file"))
+               ctx.cfg.mimetype_file = xstrdup(value);
+       else if (!strcmp(name, "renamelimit"))
+               ctx.cfg.renamelimit = atoi(value);
+       else if (!strcmp(name, "remove-suffix"))
+               ctx.cfg.remove_suffix = atoi(value);
+       else if (!strcmp(name, "robots"))
+               ctx.cfg.robots = xstrdup(value);
+       else if (!strcmp(name, "clone-prefix"))
+               ctx.cfg.clone_prefix = xstrdup(value);
+       else if (!strcmp(name, "clone-url"))
+               ctx.cfg.clone_url = xstrdup(value);
+       else if (!strcmp(name, "local-time"))
+               ctx.cfg.local_time = atoi(value);
+       else if (!strcmp(name, "commit-sort")) {
+               if (!strcmp(value, "date"))
+                       ctx.cfg.commit_sort = 1;
+               if (!strcmp(value, "topo"))
+                       ctx.cfg.commit_sort = 2;
+       } else if (!strcmp(name, "branch-sort")) {
+               if (!strcmp(value, "age"))
+                       ctx.cfg.branch_sort = 1;
+               if (!strcmp(value, "name"))
+                       ctx.cfg.branch_sort = 0;
+       } else if (skip_prefix(name, "mimetype.", &arg))
+               add_mimetype(arg, value);
+       else if (!strcmp(name, "include"))
+               parse_configfile(expand_macros(value), config_cb);
+}
+
+static void querystring_cb(const char *name, const char *value)
+{
+       if (!value)
+               value = "";
+
+       if (!strcmp(name,"r")) {
+               ctx.qry.repo = xstrdup(value);
+               ctx.repo = cgit_get_repoinfo(value);
+       } else if (!strcmp(name, "p")) {
+               ctx.qry.page = xstrdup(value);
+       } else if (!strcmp(name, "url")) {
+               if (*value == '/')
+                       value++;
+               ctx.qry.url = xstrdup(value);
+               cgit_parse_url(value);
+       } else if (!strcmp(name, "qt")) {
+               ctx.qry.grep = xstrdup(value);
+       } else if (!strcmp(name, "q")) {
+               ctx.qry.search = xstrdup(value);
+       } else if (!strcmp(name, "h")) {
+               ctx.qry.head = xstrdup(value);
+               ctx.qry.has_symref = 1;
+       } else if (!strcmp(name, "id")) {
+               ctx.qry.sha1 = xstrdup(value);
+               ctx.qry.has_sha1 = 1;
+       } else if (!strcmp(name, "id2")) {
+               ctx.qry.sha2 = xstrdup(value);
+               ctx.qry.has_sha1 = 1;
+       } else if (!strcmp(name, "ofs")) {
+               ctx.qry.ofs = atoi(value);
+       } else if (!strcmp(name, "path")) {
+               ctx.qry.path = trim_end(value, '/');
+       } else if (!strcmp(name, "name")) {
+               ctx.qry.name = xstrdup(value);
+       } else if (!strcmp(name, "s")) {
+               ctx.qry.sort = xstrdup(value);
+       } else if (!strcmp(name, "showmsg")) {
+               ctx.qry.showmsg = atoi(value);
+       } else if (!strcmp(name, "period")) {
+               ctx.qry.period = xstrdup(value);
+       } else if (!strcmp(name, "dt")) {
+               ctx.qry.difftype = atoi(value);
+               ctx.qry.has_difftype = 1;
+       } else if (!strcmp(name, "ss")) {
+               /* No longer generated, but there may be links out there. */
+               ctx.qry.difftype = atoi(value) ? DIFF_SSDIFF : DIFF_UNIFIED;
+               ctx.qry.has_difftype = 1;
+       } else if (!strcmp(name, "all")) {
+               ctx.qry.show_all = atoi(value);
+       } else if (!strcmp(name, "context")) {
+               ctx.qry.context = atoi(value);
+       } else if (!strcmp(name, "ignorews")) {
+               ctx.qry.ignorews = atoi(value);
+       } else if (!strcmp(name, "follow")) {
+               ctx.qry.follow = atoi(value);

        }
        }

+}
+
+static void prepare_context(void)
+{
+       memset(&ctx, 0, sizeof(ctx));
+       ctx.cfg.agefile = "info/web/last-modified";
+       ctx.cfg.nocache = 0;
+       ctx.cfg.cache_size = 0;
+       ctx.cfg.cache_max_create_time = 5;
+       ctx.cfg.cache_root = CGIT_CACHE_ROOT;
+       ctx.cfg.cache_about_ttl = 15;
+       ctx.cfg.cache_snapshot_ttl = 5;
+       ctx.cfg.cache_repo_ttl = 5;
+       ctx.cfg.cache_root_ttl = 5;
+       ctx.cfg.cache_scanrc_ttl = 15;
+       ctx.cfg.cache_dynamic_ttl = 5;
+       ctx.cfg.cache_static_ttl = -1;
+       ctx.cfg.case_sensitive_sort = 1;
+       ctx.cfg.branch_sort = 0;
+       ctx.cfg.commit_sort = 0;
+       ctx.cfg.css = "/cgit.css";
+       ctx.cfg.logo = "/cgit.png";
+       ctx.cfg.favicon = "/favicon.ico";
+       ctx.cfg.local_time = 0;
+       ctx.cfg.enable_http_clone = 1;
+       ctx.cfg.enable_index_owner = 1;
+       ctx.cfg.enable_tree_linenumbers = 1;
+       ctx.cfg.enable_git_config = 0;
+       ctx.cfg.max_repo_count = 50;
+       ctx.cfg.max_commit_count = 50;
+       ctx.cfg.max_lock_attempts = 5;
+       ctx.cfg.max_msg_len = 80;
+       ctx.cfg.max_repodesc_len = 80;
+       ctx.cfg.max_blob_size = 0;
+       ctx.cfg.max_stats = 0;
+       ctx.cfg.project_list = NULL;
+       ctx.cfg.renamelimit = -1;
+       ctx.cfg.remove_suffix = 0;
+       ctx.cfg.robots = "index, nofollow";
+       ctx.cfg.root_title = "Git repository browser";
+       ctx.cfg.root_desc = "a fast webinterface for the git dscm";
+       ctx.cfg.scan_hidden_path = 0;
+       ctx.cfg.script_name = CGIT_SCRIPT_NAME;
+       ctx.cfg.section = "";
+       ctx.cfg.repository_sort = "name";
+       ctx.cfg.section_sort = 1;
+       ctx.cfg.summary_branches = 10;
+       ctx.cfg.summary_log = 10;
+       ctx.cfg.summary_tags = 10;
+       ctx.cfg.max_atom_items = 10;
+       ctx.cfg.difftype = DIFF_UNIFIED;
+       ctx.env.cgit_config = getenv("CGIT_CONFIG");
+       ctx.env.http_host = getenv("HTTP_HOST");
+       ctx.env.https = getenv("HTTPS");
+       ctx.env.no_http = getenv("NO_HTTP");
+       ctx.env.path_info = getenv("PATH_INFO");
+       ctx.env.query_string = getenv("QUERY_STRING");
+       ctx.env.request_method = getenv("REQUEST_METHOD");
+       ctx.env.script_name = getenv("SCRIPT_NAME");
+       ctx.env.server_name = getenv("SERVER_NAME");
+       ctx.env.server_port = getenv("SERVER_PORT");
+       ctx.env.http_cookie = getenv("HTTP_COOKIE");
+       ctx.env.http_referer = getenv("HTTP_REFERER");
+       ctx.env.content_length = getenv("CONTENT_LENGTH") ? strtoul(getenv("CONTENT_LENGTH"), NULL, 10) : 0;
+       ctx.env.authenticated = 0;
+       ctx.page.mimetype = "text/html";
+       ctx.page.charset = PAGE_ENCODING;
+       ctx.page.filename = NULL;
+       ctx.page.size = 0;
+       ctx.page.modified = time(NULL);
+       ctx.page.expires = ctx.page.modified;
+       ctx.page.etag = NULL;
+       memset(&ctx.cfg.mimetypes, 0, sizeof(struct string_list));
+       if (ctx.env.script_name)
+               ctx.cfg.script_name = xstrdup(ctx.env.script_name);
+       if (ctx.env.query_string)
+               ctx.qry.raw = xstrdup(ctx.env.query_string);
+       if (!ctx.env.cgit_config)
+               ctx.env.cgit_config = CGIT_CONFIG;
+}
+
+struct refmatch {
+       char *req_ref;
+       char *first_ref;
+       int match;
+};
+
+static int find_current_ref(const char *refname, const struct object_id *oid,
+                           int flags, void *cb_data)
+{
+       struct refmatch *info;
+
+       info = (struct refmatch *)cb_data;
+       if (!strcmp(refname, info->req_ref))
+               info->match = 1;
+       if (!info->first_ref)
+               info->first_ref = xstrdup(refname);
+       return info->match;
+}
+
+static void free_refmatch_inner(struct refmatch *info)
+{
+       if (info->first_ref)
+               free(info->first_ref);
+}

 
 

-       if (!cgit_cmd) {
-               item->name = xstrdup(fmt("%s/%s/index.%s.html", cgit_cache_root,
-                                        cache_safe_filename(cgit_repo->url),
-                                        cache_safe_filename(cgit_querystring)));
-               item->ttl = cgit_cache_repo_ttl;
-       } else {
-               item->name = xstrdup(fmt("%s/%s/%s/%s.html", cgit_cache_root,
-                                        cache_safe_filename(cgit_repo->url),
-                                        cgit_query_page,
-                                        cache_safe_filename(cgit_querystring)));
-               if (cgit_query_has_symref)
-                       item->ttl = cgit_cache_dynamic_ttl;
-               else if (cgit_query_has_sha1)
-                       item->ttl = cgit_cache_static_ttl;
+static char *find_default_branch(struct cgit_repo *repo)
+{
+       struct refmatch info;
+       char *ref;
+
+       info.req_ref = repo->defbranch;
+       info.first_ref = NULL;
+       info.match = 0;
+       for_each_branch_ref(find_current_ref, &info);
+       if (info.match)
+               ref = info.req_ref;
+       else
+               ref = info.first_ref;
+       if (ref)
+               ref = xstrdup(ref);
+       free_refmatch_inner(&info);
+
+       return ref;
+}
+
+static char *guess_defbranch(void)
+{
+       const char *ref, *refname;
+       struct object_id oid;
+
+       ref = resolve_ref_unsafe("HEAD", 0, oid.hash, NULL);
+       if (!ref || !skip_prefix(ref, "refs/heads/", &refname))
+               return "master";
+       return xstrdup(refname);
+}
+
+/* The caller must free filename and ref after calling this. */
+static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
+{
+       const char *colon;
+
+       *filename = NULL;
+       *ref = NULL;
+
+       if (!readme || !readme[0])
+               return;
+
+       /* Check if the readme is tracked in the git repo. */
+       colon = strchr(readme, ':');
+       if (colon && strlen(colon) > 1) {
+               /* If it starts with a colon, we want to use
+                * the default branch */
+               if (colon == readme && repo->defbranch)
+                       *ref = xstrdup(repo->defbranch);

                else
                else

-                       item->ttl = cgit_cache_repo_ttl;
+                       *ref = xstrndup(readme, colon - readme);
+               readme = colon + 1;

        }
        }

-       return 1;
+
+       /* Prepend repo path to relative readme path unless tracked. */
+       if (!(*ref) && readme[0] != '/')
+               *filename = fmtalloc("%s/%s", repo->path, readme);
+       else
+               *filename = xstrdup(readme);

 }
 }

+static void choose_readme(struct cgit_repo *repo)
+{
+       int found;
+       char *filename, *ref;
+       struct string_list_item *entry;

 
 

-static void cgit_print_repo_page(struct cacheitem *item)
+       if (!repo->readme.nr)
+               return;
+
+       found = 0;
+       for_each_string_list_item(entry, &repo->readme) {
+               parse_readme(entry->string, &filename, &ref, repo);
+               if (!filename) {
+                       free(filename);
+                       free(ref);
+                       continue;
+               }
+               if (ref) {
+                       if (cgit_ref_path_exists(filename, ref, 1)) {
+                               found = 1;
+                               break;
+                       }
+               }
+               else if (!access(filename, R_OK)) {
+                       found = 1;
+                       break;
+               }
+               free(filename);
+               free(ref);
+       }
+       repo->readme.strdup_strings = 1;
+       string_list_clear(&repo->readme, 0);
+       repo->readme.strdup_strings = 0;
+       if (found)
+               string_list_append(&repo->readme, filename)->util = ref;
+}
+
+static void print_no_repo_clone_urls(const char *url)

 {
 {

-       char *title;
-       int show_search;
-
-       if (!cgit_query_head)
-               cgit_query_head = cgit_repo->defbranch;
-
-       if (chdir(cgit_repo->path)) {
-               title = fmt("%s - %s", cgit_root_title, "Bad request");
-               cgit_print_docstart(title, item);
-               cgit_print_pageheader(title, 0);
-               cgit_print_error(fmt("Unable to scan repository: %s",
-                                    strerror(errno)));
+        html("<tr><td><a rel='vcs-git' href='");
+        html_url_path(url);
+        html("' title='");
+        html_attr(ctx.repo->name);
+        html(" Git repository'>");
+        html_txt(url);
+        html("</a></td></tr>\n");
+}
+
+static int prepare_repo_cmd(void)
+{
+       struct object_id oid;
+       int nongit = 0;
+       int rc;
+
+       /* The path to the git repository. */
+       setenv("GIT_DIR", ctx.repo->path, 1);
+
+       /* Do not look in /etc/ for gitconfig and gitattributes. */
+       setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
+       setenv("GIT_ATTR_NOSYSTEM", "1", 1);
+       unsetenv("HOME");
+       unsetenv("XDG_CONFIG_HOME");
+
+       /* Setup the git directory and initialize the notes system. Both of these
+        * load local configuration from the git repository, so we do them both while
+        * the HOME variables are unset. */
+       setup_git_directory_gently(&nongit);
+       init_display_notes(NULL);
+
+       if (nongit) {
+               const char *name = ctx.repo->name;
+               rc = errno;
+               ctx.page.title = fmtalloc("%s - %s", ctx.cfg.root_title,
+                                               "config error");
+               ctx.repo = NULL;
+               cgit_print_http_headers();
+               cgit_print_docstart();
+               cgit_print_pageheader();
+               cgit_print_error("Failed to open %s: %s", name,
+                                rc ? strerror(rc) : "Not a valid git repository");

                cgit_print_docend();
                cgit_print_docend();

-               return;
+               return 1;
+       }
+       ctx.page.title = fmtalloc("%s - %s", ctx.repo->name, ctx.repo->desc);
+
+       if (!ctx.repo->defbranch)
+               ctx.repo->defbranch = guess_defbranch();
+
+       if (!ctx.qry.head) {
+               ctx.qry.nohead = 1;
+               ctx.qry.head = find_default_branch(ctx.repo);
+       }
+
+       if (!ctx.qry.head) {
+               cgit_print_http_headers();
+               cgit_print_docstart();
+               cgit_print_pageheader();
+               cgit_print_error("Repository seems to be empty");
+               if (!strcmp(ctx.qry.page, "summary")) {
+                       html("<table class='list'><tr class='nohover'><td>&nbsp;</td></tr><tr class='nohover'><th class='left'>Clone</th></tr>\n");
+                       cgit_prepare_repo_env(ctx.repo);
+                       cgit_add_clone_urls(print_no_repo_clone_urls);
+                       html("</table>\n");
+               }
+               cgit_print_docend();
+               return 1;
+       }
+
+       if (get_oid(ctx.qry.head, &oid)) {
+               char *old_head = ctx.qry.head;
+               ctx.qry.head = xstrdup(ctx.repo->defbranch);
+               cgit_print_error_page(404, "Not found",
+                               "Invalid branch: %s", old_head);
+               free(old_head);
+               return 1;

        }
        }

+       string_list_sort(&ctx.repo->submodules);
+       cgit_prepare_repo_env(ctx.repo);
+       choose_readme(ctx.repo);
+       return 0;
+}
+
+static inline void open_auth_filter(const char *function)
+{
+       cgit_open_filter(ctx.cfg.auth_filter, function,
+               ctx.env.http_cookie ? ctx.env.http_cookie : "",
+               ctx.env.request_method ? ctx.env.request_method : "",
+               ctx.env.query_string ? ctx.env.query_string : "",
+               ctx.env.http_referer ? ctx.env.http_referer : "",
+               ctx.env.path_info ? ctx.env.path_info : "",
+               ctx.env.http_host ? ctx.env.http_host : "",
+               ctx.env.https ? ctx.env.https : "",
+               ctx.qry.repo ? ctx.qry.repo : "",
+               ctx.qry.page ? ctx.qry.page : "",
+               ctx.qry.url ? ctx.qry.url : "",
+               cgit_loginurl());
+}

 
 

-       title = fmt("%s - %s", cgit_repo->name, cgit_repo->desc);
-       show_search = 0;
-       setenv("GIT_DIR", cgit_repo->path, 1);
+/* We intentionally keep this rather small, instead of looping and
+ * feeding it to the filter a couple bytes at a time. This way, the
+ * filter itself does not need to handle any denial of service or
+ * buffer bloat issues. If this winds up being too small, people
+ * will complain on the mailing list, and we'll increase it as needed. */
+#define MAX_AUTHENTICATION_POST_BYTES 4096
+/* The filter is expected to spit out "Status: " and all headers. */
+static inline void authenticate_post(void)
+{
+       char buffer[MAX_AUTHENTICATION_POST_BYTES];
+       unsigned int len;
+
+       open_auth_filter("authenticate-post");
+       len = ctx.env.content_length;
+       if (len > MAX_AUTHENTICATION_POST_BYTES)
+               len = MAX_AUTHENTICATION_POST_BYTES;
+       if (read(STDIN_FILENO, buffer, len) < 0)
+               die_errno("Could not read POST from stdin");
+       if (write(STDOUT_FILENO, buffer, len) < 0)
+               die_errno("Could not write POST to stdout");
+       cgit_close_filter(ctx.cfg.auth_filter);
+       exit(0);
+}

 
 

-       if ((cgit_cmd == CMD_SNAPSHOT) && cgit_repo->snapshots) {
-               cgit_print_snapshot(item, cgit_query_head, cgit_query_sha1,
-                                   cgit_repobasename(cgit_repo->url),
-                                   cgit_query_path,
-                                   cgit_repo->snapshots );
+static inline void authenticate_cookie(void)
+{
+       /* If we don't have an auth_filter, consider all cookies valid, and thus return early. */
+       if (!ctx.cfg.auth_filter) {
+               ctx.env.authenticated = 1;

                return;
        }
 
                return;
        }
 

-       if (cgit_cmd == CMD_BLOB) {
-               cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
+       /* If we're having something POST'd to /login, we're authenticating POST,
+        * instead of the cookie, so call authenticate_post and bail out early.
+        * This pattern here should match /?p=login with POST. */
+       if (ctx.env.request_method && ctx.qry.page && !ctx.repo && \
+           !strcmp(ctx.env.request_method, "POST") && !strcmp(ctx.qry.page, "login")) {
+               authenticate_post();

                return;
        }
 
                return;
        }
 

-       show_search = (cgit_cmd == CMD_LOG);
-       cgit_print_docstart(title, item);
-       if (!cgit_cmd) {
-               cgit_print_pageheader("summary", show_search);
-               cgit_print_summary();
+       /* If we've made it this far, we're authenticating the cookie for real, so do that. */
+       open_auth_filter("authenticate-cookie");
+       ctx.env.authenticated = cgit_close_filter(ctx.cfg.auth_filter);
+}
+
+static void process_request(void)
+{
+       struct cgit_cmd *cmd;
+
+       /* If we're not yet authenticated, no matter what page we're on,
+        * display the authentication body from the auth_filter. This should
+        * never be cached. */
+       if (!ctx.env.authenticated) {
+               ctx.page.title = "Authentication Required";
+               cgit_print_http_headers();
+               cgit_print_docstart();
+               cgit_print_pageheader();
+               open_auth_filter("body");
+               cgit_close_filter(ctx.cfg.auth_filter);

                cgit_print_docend();
                return;
        }
 
                cgit_print_docend();
                return;
        }
 

-       cgit_print_pageheader(cgit_query_page, show_search);
-
-       switch(cgit_cmd) {
-       case CMD_LOG:
-               cgit_print_log(cgit_query_sha1, cgit_query_ofs,
-                              cgit_max_commit_count, cgit_query_search,
-                              cgit_query_path, 1);
-               break;
-       case CMD_TREE:
-               cgit_print_tree(cgit_query_sha1, cgit_query_path);
-               break;
-       case CMD_COMMIT:
-               cgit_print_commit(cgit_query_sha1);
-               break;
-       case CMD_TAG:
-               cgit_print_tag(cgit_query_sha1);
-               break;
-       case CMD_DIFF:
-               cgit_print_diff(cgit_query_sha1, cgit_query_sha2, cgit_query_path);
-               break;
-       default:
-               cgit_print_error("Invalid request");
+       cmd = cgit_get_cmd();
+       if (!cmd) {
+               ctx.page.title = "cgit error";
+               cgit_print_error_page(404, "Not found", "Invalid request");
+               return;
+       }
+
+       if (!ctx.cfg.enable_http_clone && cmd->is_clone) {
+               ctx.page.title = "cgit error";
+               cgit_print_error_page(404, "Not found", "Invalid request");
+               return;
+       }
+
+       /* If cmd->want_vpath is set, assume ctx.qry.path contains a "virtual"
+        * in-project path limit to be made available at ctx.qry.vpath.
+        * Otherwise, no path limit is in effect (ctx.qry.vpath = NULL).
+        */
+       ctx.qry.vpath = cmd->want_vpath ? ctx.qry.path : NULL;
+
+       if (cmd->want_repo && !ctx.repo) {
+               cgit_print_error_page(400, "Bad request",
+                               "No repository selected");
+               return;

        }
        }

-       cgit_print_docend();
+
+       if (ctx.repo && prepare_repo_cmd())
+               return;
+
+       cmd->fn();

 }
 
 }
 

-static void cgit_fill_cache(struct cacheitem *item, int use_cache)
+static int cmp_repos(const void *a, const void *b)

 {
 {

-       static char buf[PATH_MAX];
-       int stdout2;
+       const struct cgit_repo *ra = a, *rb = b;
+       return strcmp(ra->url, rb->url);
+}

 
 

-       getcwd(buf, sizeof(buf));
-       item->st.st_mtime = time(NULL);
+static char *build_snapshot_setting(int bitmap)
+{
+       const struct cgit_snapshot_format *f;
+       struct strbuf result = STRBUF_INIT;

 
 

-       if (use_cache) {
-               stdout2 = chk_positive(dup(STDOUT_FILENO),
-                                      "Preserving STDOUT");
-               chk_zero(close(STDOUT_FILENO), "Closing STDOUT");
-               chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
+       for (f = cgit_snapshot_formats; f->suffix; f++) {
+               if (f->bit & bitmap) {
+                       if (result.len)
+                               strbuf_addch(&result, ' ');
+                       strbuf_addstr(&result, f->suffix);
+               }

        }
        }

+       return strbuf_detach(&result, NULL);
+}

 
 

-       if (cgit_repo)
-               cgit_print_repo_page(item);
-       else
-               cgit_print_repolist(item);
+static char *get_first_line(char *txt)
+{
+       char *t = xstrdup(txt);
+       char *p = strchr(t, '\n');
+       if (p)
+               *p = '\0';
+       return t;
+}

 
 

-       if (use_cache) {
-               chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT");
-               chk_positive(dup2(stdout2, STDOUT_FILENO),
-                            "Restoring original STDOUT");
-               chk_zero(close(stdout2), "Closing temporary STDOUT");
+static void print_repo(FILE *f, struct cgit_repo *repo)
+{
+       struct string_list_item *item;
+       fprintf(f, "repo.url=%s\n", repo->url);
+       fprintf(f, "repo.name=%s\n", repo->name);
+       fprintf(f, "repo.path=%s\n", repo->path);
+       if (repo->owner)
+               fprintf(f, "repo.owner=%s\n", repo->owner);
+       if (repo->desc) {
+               char *tmp = get_first_line(repo->desc);
+               fprintf(f, "repo.desc=%s\n", tmp);
+               free(tmp);
+       }
+       for_each_string_list_item(item, &repo->readme) {
+               if (item->util)
+                       fprintf(f, "repo.readme=%s:%s\n", (char *)item->util, item->string);
+               else
+                       fprintf(f, "repo.readme=%s\n", item->string);

        }
        }

+       if (repo->defbranch)
+               fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
+       if (repo->module_link)
+               fprintf(f, "repo.module-link=%s\n", repo->module_link);
+       if (repo->section)
+               fprintf(f, "repo.section=%s\n", repo->section);
+       if (repo->homepage)
+               fprintf(f, "repo.homepage=%s\n", repo->homepage);
+       if (repo->clone_url)
+               fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
+       fprintf(f, "repo.enable-commit-graph=%d\n",
+               repo->enable_commit_graph);
+       fprintf(f, "repo.enable-log-filecount=%d\n",
+               repo->enable_log_filecount);
+       fprintf(f, "repo.enable-log-linecount=%d\n",
+               repo->enable_log_linecount);
+       if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
+               cgit_fprintf_filter(repo->about_filter, f, "repo.about-filter=");
+       if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
+               cgit_fprintf_filter(repo->commit_filter, f, "repo.commit-filter=");
+       if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
+               cgit_fprintf_filter(repo->source_filter, f, "repo.source-filter=");
+       if (repo->email_filter && repo->email_filter != ctx.cfg.email_filter)
+               cgit_fprintf_filter(repo->email_filter, f, "repo.email-filter=");
+       if (repo->owner_filter && repo->owner_filter != ctx.cfg.owner_filter)
+               cgit_fprintf_filter(repo->owner_filter, f, "repo.owner-filter=");
+       if (repo->snapshots != ctx.cfg.snapshots) {
+               char *tmp = build_snapshot_setting(repo->snapshots);
+               fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
+               free(tmp);
+       }
+       if (repo->max_stats != ctx.cfg.max_stats)
+               fprintf(f, "repo.max-stats=%s\n",
+                       cgit_find_stats_periodname(repo->max_stats));
+       if (repo->logo)
+               fprintf(f, "repo.logo=%s\n", repo->logo);
+       if (repo->logo_link)
+               fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
+       fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
+       fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
+       fprintf(f, "repo.enable-html-serving=%d\n", repo->enable_html_serving);
+       if (repo->branch_sort == 1)
+               fprintf(f, "repo.branch-sort=age\n");
+       if (repo->commit_sort) {
+               if (repo->commit_sort == 1)
+                       fprintf(f, "repo.commit-sort=date\n");
+               else if (repo->commit_sort == 2)
+                       fprintf(f, "repo.commit-sort=topo\n");
+       }
+       fprintf(f, "repo.hide=%d\n", repo->hide);
+       fprintf(f, "repo.ignore=%d\n", repo->ignore);
+       fprintf(f, "\n");
+}

 
 

-       chdir(buf);
+static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
+{
+       int i;
+
+       for (i = start; i < list->count; i++)
+               print_repo(f, &list->repos[i]);

 }
 
 }
 

-static void cgit_check_cache(struct cacheitem *item)
+/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
+ * and return 0 on success.
+ */
+static int generate_cached_repolist(const char *path, const char *cached_rc)

 {
 {

-       int i = 0;
+       struct strbuf locked_rc = STRBUF_INIT;
+       int result = 0;
+       int idx;
+       FILE *f;

 
 

- top:
-       if (++i > cgit_max_lock_attempts) {
-               die("cgit_refresh_cache: unable to lock %s: %s",
-                   item->name, strerror(errno));
-       }
-       if (!cache_exist(item)) {
-               if (!cache_lock(item)) {
-                       sleep(1);
-                       goto top;
-               }
-               if (!cache_exist(item)) {
-                       cgit_fill_cache(item, 1);
-                       cache_unlock(item);
-               } else {
-                       cache_cancel_lock(item);
-               }
-       } else if (cache_expired(item) && cache_lock(item)) {
-               if (cache_expired(item)) {
-                       cgit_fill_cache(item, 1);
-                       cache_unlock(item);
-               } else {
-                       cache_cancel_lock(item);
-               }
+       strbuf_addf(&locked_rc, "%s.lock", cached_rc);
+       f = fopen(locked_rc.buf, "wx");
+       if (!f) {
+               /* Inform about the error unless the lockfile already existed,
+                * since that only means we've got concurrent requests.
+                */
+               result = errno;
+               if (result != EEXIST)
+                       fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
+                               locked_rc.buf, strerror(result), result);
+               goto out;

        }
        }

+       idx = cgit_repolist.count;
+       if (ctx.cfg.project_list)
+               scan_projects(path, ctx.cfg.project_list, repo_config);
+       else
+               scan_tree(path, repo_config);
+       print_repolist(f, &cgit_repolist, idx);
+       if (rename(locked_rc.buf, cached_rc))
+               fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
+                       locked_rc.buf, cached_rc, strerror(errno), errno);
+       fclose(f);
+out:
+       strbuf_release(&locked_rc);
+       return result;

 }
 
 }
 

-static void cgit_print_cache(struct cacheitem *item)
+static void process_cached_repolist(const char *path)

 {
 {

-       static char buf[4096];
-       ssize_t i;
+       struct stat st;
+       struct strbuf cached_rc = STRBUF_INIT;
+       time_t age;
+       unsigned long hash;

 
 

-       int fd = open(item->name, O_RDONLY);
-       if (fd<0)
-               die("Unable to open cached file %s", item->name);
+       hash = hash_str(path);
+       if (ctx.cfg.project_list)
+               hash += hash_str(ctx.cfg.project_list);
+       strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);

 
 

-       while((i=read(fd, buf, sizeof(buf))) > 0)
-               write(STDOUT_FILENO, buf, i);
+       if (stat(cached_rc.buf, &st)) {
+               /* Nothing is cached, we need to scan without forking. And
+                * if we fail to generate a cached repolist, we need to
+                * invoke scan_tree manually.
+                */
+               if (generate_cached_repolist(path, cached_rc.buf)) {
+                       if (ctx.cfg.project_list)
+                               scan_projects(path, ctx.cfg.project_list,
+                                             repo_config);
+                       else
+                               scan_tree(path, repo_config);
+               }
+               goto out;
+       }

 
 

-       close(fd);
+       parse_configfile(cached_rc.buf, config_cb);
+
+       /* If the cached configfile hasn't expired, lets exit now */
+       age = time(NULL) - st.st_mtime;
+       if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
+               goto out;
+
+       /* The cached repolist has been parsed, but it was old. So lets
+        * rescan the specified path and generate a new cached repolist
+        * in a child-process to avoid latency for the current request.
+        */
+       if (fork())
+               goto out;
+
+       exit(generate_cached_repolist(path, cached_rc.buf));
+out:
+       strbuf_release(&cached_rc);

 }
 
 static void cgit_parse_args(int argc, const char **argv)
 {
        int i;
 }
 
 static void cgit_parse_args(int argc, const char **argv)
 {
        int i;

+       const char *arg;
+       int scan = 0;

 
        for (i = 1; i < argc; i++) {
 
        for (i = 1; i < argc; i++) {

-               if (!strncmp(argv[i], "--cache=", 8)) {
-                       cgit_cache_root = xstrdup(argv[i]+8);
-               }
-               if (!strcmp(argv[i], "--nocache")) {
-                       cgit_nocache = 1;
-               }
-               if (!strncmp(argv[i], "--query=", 8)) {
-                       cgit_querystring = xstrdup(argv[i]+8);
-               }
-               if (!strncmp(argv[i], "--repo=", 7)) {
-                       cgit_query_repo = xstrdup(argv[i]+7);
-               }
-               if (!strncmp(argv[i], "--page=", 7)) {
-                       cgit_query_page = xstrdup(argv[i]+7);
-               }
-               if (!strncmp(argv[i], "--head=", 7)) {
-                       cgit_query_head = xstrdup(argv[i]+7);
-                       cgit_query_has_symref = 1;
-               }
-               if (!strncmp(argv[i], "--sha1=", 7)) {
-                       cgit_query_sha1 = xstrdup(argv[i]+7);
-                       cgit_query_has_sha1 = 1;
+               if (!strcmp(argv[i], "--version")) {
+                       printf("CGit %s | https://git.zx2c4.com/cgit/\n\nCompiled in features:\n", CGIT_VERSION);
+#ifdef NO_LUA
+                       printf("[-] ");
+#else
+                       printf("[+] ");
+#endif
+                       printf("Lua scripting\n");
+#ifndef HAVE_LINUX_SENDFILE
+                       printf("[-] ");
+#else
+                       printf("[+] ");
+#endif
+                       printf("Linux sendfile() usage\n");
+
+                       exit(0);

                }
                }

-               if (!strncmp(argv[i], "--ofs=", 6)) {
-                       cgit_query_ofs = atoi(argv[i]+6);
+               if (skip_prefix(argv[i], "--cache=", &arg)) {
+                       ctx.cfg.cache_root = xstrdup(arg);
+               } else if (!strcmp(argv[i], "--nocache")) {
+                       ctx.cfg.nocache = 1;
+               } else if (!strcmp(argv[i], "--nohttp")) {
+                       ctx.env.no_http = "1";
+               } else if (skip_prefix(argv[i], "--query=", &arg)) {
+                       ctx.qry.raw = xstrdup(arg);
+               } else if (skip_prefix(argv[i], "--repo=", &arg)) {
+                       ctx.qry.repo = xstrdup(arg);
+               } else if (skip_prefix(argv[i], "--page=", &arg)) {
+                       ctx.qry.page = xstrdup(arg);
+               } else if (skip_prefix(argv[i], "--head=", &arg)) {
+                       ctx.qry.head = xstrdup(arg);
+                       ctx.qry.has_symref = 1;
+               } else if (skip_prefix(argv[i], "--sha1=", &arg)) {
+                       ctx.qry.sha1 = xstrdup(arg);
+                       ctx.qry.has_sha1 = 1;
+               } else if (skip_prefix(argv[i], "--ofs=", &arg)) {
+                       ctx.qry.ofs = atoi(arg);
+               } else if (skip_prefix(argv[i], "--scan-tree=", &arg) ||
+                          skip_prefix(argv[i], "--scan-path=", &arg)) {
+                       /*
+                        * HACK: The global snapshot bit mask defines the set
+                        * of allowed snapshot formats, but the config file
+                        * hasn't been parsed yet so the mask is currently 0.
+                        * By setting all bits high before scanning we make
+                        * sure that any in-repo cgitrc snapshot setting is
+                        * respected by scan_tree().
+                        *
+                        * NOTE: We assume that there aren't more than 8
+                        * different snapshot formats supported by cgit...
+                        */
+                       ctx.cfg.snapshots = 0xFF;
+                       scan++;
+                       scan_tree(arg, repo_config);

                }
        }
                }
        }

+       if (scan) {
+               qsort(cgit_repolist.repos, cgit_repolist.count,
+                       sizeof(struct cgit_repo), cmp_repos);
+               print_repolist(stdout, &cgit_repolist, 0);
+               exit(0);
+       }
+}
+
+static int calc_ttl(void)
+{
+       if (!ctx.repo)
+               return ctx.cfg.cache_root_ttl;
+
+       if (!ctx.qry.page)
+               return ctx.cfg.cache_repo_ttl;
+
+       if (!strcmp(ctx.qry.page, "about"))
+               return ctx.cfg.cache_about_ttl;
+
+       if (!strcmp(ctx.qry.page, "snapshot"))
+               return ctx.cfg.cache_snapshot_ttl;
+
+       if (ctx.qry.has_sha1)
+               return ctx.cfg.cache_static_ttl;
+
+       if (ctx.qry.has_symref)
+               return ctx.cfg.cache_dynamic_ttl;
+
+       return ctx.cfg.cache_repo_ttl;

 }
 
 }
 

-int main(int argc, const char **argv)
+int cmd_main(int argc, const char **argv)

 {
 {

-       struct cacheitem item;
-       const char *cgit_config_env = getenv("CGIT_CONFIG");
+       const char *path;
+       int err, ttl;
+
+       cgit_init_filters();
+       atexit(cgit_cleanup_filters);

 
 

-       htmlfd = STDOUT_FILENO;
-       item.st.st_mtime = time(NULL);
+       prepare_context();

        cgit_repolist.length = 0;
        cgit_repolist.count = 0;
        cgit_repolist.repos = NULL;
 
        cgit_repolist.length = 0;
        cgit_repolist.count = 0;
        cgit_repolist.repos = NULL;
 

-       cgit_read_config(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
-                        cgit_global_config_cb);
-       cgit_repo = NULL;
-       if (getenv("SCRIPT_NAME"))
-               cgit_script_name = xstrdup(getenv("SCRIPT_NAME"));
-       if (getenv("QUERY_STRING"))
-               cgit_querystring = xstrdup(getenv("QUERY_STRING"));

        cgit_parse_args(argc, argv);
        cgit_parse_args(argc, argv);

-       cgit_parse_query(cgit_querystring, cgit_querystring_cb);
-       if (!cgit_prepare_cache(&item))
-               return 0;
-       if (cgit_nocache) {
-               cgit_fill_cache(&item, 0);
-       } else {
-               cgit_check_cache(&item);
-               cgit_print_cache(&item);
+       parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
+       ctx.repo = NULL;
+       http_parse_querystring(ctx.qry.raw, querystring_cb);
+
+       /* If virtual-root isn't specified in cgitrc, lets pretend
+        * that virtual-root equals SCRIPT_NAME, minus any possibly
+        * trailing slashes.
+        */
+       if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
+               ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
+
+       /* If no url parameter is specified on the querystring, lets
+        * use PATH_INFO as url. This allows cgit to work with virtual
+        * urls without the need for rewriterules in the webserver (as
+        * long as PATH_INFO is included in the cache lookup key).
+        */
+       path = ctx.env.path_info;
+       if (!ctx.qry.url && path) {
+               if (path[0] == '/')
+                       path++;
+               ctx.qry.url = xstrdup(path);
+               if (ctx.qry.raw) {
+                       char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
+                       free(ctx.qry.raw);
+                       ctx.qry.raw = newqry;
+               } else
+                       ctx.qry.raw = xstrdup(ctx.qry.url);
+               cgit_parse_url(ctx.qry.url);

        }
        }

-       return 0;
+
+       /* Before we go any further, we set ctx.env.authenticated by checking to see
+        * if the supplied cookie is valid. All cookies are valid if there is no
+        * auth_filter. If there is an auth_filter, the filter decides. */
+       authenticate_cookie();
+
+       ttl = calc_ttl();
+       if (ttl < 0)
+               ctx.page.expires += 10 * 365 * 24 * 60 * 60; /* 10 years */
+       else
+               ctx.page.expires += ttl * 60;
+       if (!ctx.env.authenticated || (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD")))
+               ctx.cfg.nocache = 1;
+       if (ctx.cfg.nocache)
+               ctx.cfg.cache_size = 0;
+       err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
+                           ctx.qry.raw, ttl, process_request);
+       cgit_cleanup_filters();
+       if (err)
+               cgit_print_error("Error processing page: %s (%d)",
+                                strerror(err), err);
+       return err;

 }
 }