ui-log: Line-wrap long commit subjects when showmsg is enabled

[ps-cgit] / cgit.c

diff --git a/cgit.c b/cgit.c
index ada488b66dec98696fe5547287b2957a6d19581f..53ab68da2d7ff8f8b54deafcfdb3de47cf0c89b0 100644 (file)
--- a/cgit.c
+++ b/cgit.c
@@ -1,108 +1,784 @@
 /* cgit.c: cgi for the git scm
  *
  * Copyright (C) 2006 Lars Hjemli
 /* cgit.c: cgi for the git scm
  *
  * Copyright (C) 2006 Lars Hjemli

+ * Copyright (C) 2010 Jason A. Donenfeld <Jason@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 "scan-tree.h"

 
 

-const char cgit_version[] = CGIT_VERSION;
+const char *cgit_version = CGIT_VERSION;

 
 

-static void cgit_print_repo_page(struct cacheitem *item)
+void add_mimetype(const char *name, const char *value)

 {
 {

-       if (chdir(fmt("%s/%s", cgit_root, cgit_query_repo)) || 
-           cgit_read_config("info/cgit", cgit_repo_config_cb)) {
-               char *title = fmt("%s - %s", cgit_root_title, "Bad request");
-               cgit_print_docstart(title, item);
-               cgit_print_pageheader(title);
-               cgit_print_error(fmt("Unable to scan repository: %s",
-                                    strerror(errno)));
+       struct string_list_item *item;
+
+       item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
+       item->util = xstrdup(value);
+}
+
+struct cgit_filter *new_filter(const char *cmd, int extra_args)
+{
+       struct cgit_filter *f;
+
+       if (!cmd || !cmd[0])
+               return NULL;
+
+       f = xmalloc(sizeof(struct cgit_filter));
+       f->cmd = xstrdup(cmd);
+       f->argv = xmalloc((2 + extra_args) * sizeof(char *));
+       f->argv[0] = f->cmd;
+       f->argv[1] = NULL;
+       return f;
+}
+
+static void process_cached_repolist(const char *path);
+
+void repo_config(struct cgit_repo *repo, const char *name, const char *value)
+{
+       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, "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 = ctx.cfg.enable_commit_graph * atoi(value);
+       else if (!strcmp(name, "enable-log-filecount"))
+               repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
+       else if (!strcmp(name, "enable-log-linecount"))
+               repo->enable_log_linecount = ctx.cfg.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, "max-stats"))
+               repo->max_stats = cgit_find_stats_period(value, NULL);
+       else if (!strcmp(name, "module-link"))
+               repo->module_link= xstrdup(value);
+       else if (!strcmp(name, "section"))
+               repo->section = xstrdup(value);
+       else if (!strcmp(name, "readme") && value != NULL) {
+               repo->readme = xstrdup(value);
+       } else if (ctx.cfg.enable_filter_overrides) {
+               if (!strcmp(name, "about-filter"))
+                       repo->about_filter = new_filter(value, 0);
+               else if (!strcmp(name, "commit-filter"))
+                       repo->commit_filter = new_filter(value, 0);
+               else if (!strcmp(name, "source-filter"))
+                       repo->source_filter = new_filter(value, 1);
+       }
+}
+
+void config_cb(const char *name, const char *value)
+{
+       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 && !prefixcmp(name, "repo."))
+               repo_config(ctx.repo, name + 5, value);
+       else if (!strcmp(name, "readme"))
+               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 = trim_end(value, '/');
+               if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
+                       ctx.cfg.virtual_root = "";
+       } 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-gitweb-owner"))
+               ctx.cfg.enable_gitweb_owner = atoi(value);
+       else if (!strcmp(name, "enable-index-links"))
+               ctx.cfg.enable_index_links = 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-tree-linenumbers"))
+               ctx.cfg.enable_tree_linenumbers = 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, "about-filter"))
+               ctx.cfg.about_filter = new_filter(value, 0);
+       else if (!strcmp(name, "commit-filter"))
+               ctx.cfg.commit_filter = new_filter(value, 0);
+       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, "section-from-path"))
+               ctx.cfg.section_from_path = atoi(value);
+       else if (!strcmp(name, "source-filter"))
+               ctx.cfg.source_filter = new_filter(value, 1);
+       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.ssdiff = atoi(value);
+       else if (!strcmp(name, "agefile"))
+               ctx.cfg.agefile = 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, "local-time"))
+               ctx.cfg.local_time = atoi(value);
+       else if (!prefixcmp(name, "mimetype."))
+               add_mimetype(name + 9, 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, "mimetype")) {
+               ctx.qry.mimetype = 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, "ss")) {
+               ctx.qry.ssdiff = atoi(value);
+       } 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);
+       }
+}
+
+char *xstrdupn(const char *str)
+{
+       return (str ? xstrdup(str) : NULL);
+}
+
+static void prepare_context(struct cgit_context *ctx)
+{
+       memset(ctx, 0, sizeof(*ctx));
+       ctx->cfg.agefile = "info/web/last-modified";
+       ctx->cfg.nocache = 0;
+       ctx->cfg.cache_size = 0;
+       ctx->cfg.cache_dynamic_ttl = 5;
+       ctx->cfg.cache_max_create_time = 5;
+       ctx->cfg.cache_repo_ttl = 5;
+       ctx->cfg.cache_root = CGIT_CACHE_ROOT;
+       ctx->cfg.cache_root_ttl = 5;
+       ctx->cfg.cache_scanrc_ttl = 15;
+       ctx->cfg.cache_static_ttl = -1;
+       ctx->cfg.css = "/cgit.css";
+       ctx->cfg.logo = "/cgit.png";
+       ctx->cfg.local_time = 0;
+       ctx->cfg.enable_gitweb_owner = 1;
+       ctx->cfg.enable_tree_linenumbers = 1;
+       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.module_link = "./?repo=%s&page=commit&id=%s";
+       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.script_name = CGIT_SCRIPT_NAME;
+       ctx->cfg.section = "";
+       ctx->cfg.summary_branches = 10;
+       ctx->cfg.summary_log = 10;
+       ctx->cfg.summary_tags = 10;
+       ctx->cfg.max_atom_items = 10;
+       ctx->cfg.ssdiff = 0;
+       ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
+       ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
+       ctx->env.https = xstrdupn(getenv("HTTPS"));
+       ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
+       ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
+       ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
+       ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
+       ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
+       ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
+       ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
+       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 = ctx->env.script_name;
+       if (ctx->env.query_string)
+               ctx->qry.raw = 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;
+};
+
+int find_current_ref(const char *refname, const unsigned char *sha1,
+                    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;
+}
+
+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);
+       return ref;
+}
+
+static int prepare_repo_cmd(struct cgit_context *ctx)
+{
+       char *tmp;
+       unsigned char sha1[20];
+       int nongit = 0;
+
+       setenv("GIT_DIR", ctx->repo->path, 1);
+       setup_git_directory_gently(&nongit);
+       if (nongit) {
+               ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
+                                     "config error");
+               tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
+               ctx->repo = NULL;
+               cgit_print_http_headers(ctx);
+               cgit_print_docstart(ctx);
+               cgit_print_pageheader(ctx);
+               cgit_print_error(tmp);
+               cgit_print_docend();
+               return 1;
+       }
+       ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
+
+       if (!ctx->qry.head) {
+               ctx->qry.nohead = 1;
+               ctx->qry.head = find_default_branch(ctx->repo);
+               ctx->repo->defbranch = ctx->qry.head;
+       }
+
+       if (!ctx->qry.head) {
+               cgit_print_http_headers(ctx);
+               cgit_print_docstart(ctx);
+               cgit_print_pageheader(ctx);
+               cgit_print_error("Repository seems to be empty");
+               cgit_print_docend();
+               return 1;
+       }
+
+       if (get_sha1(ctx->qry.head, sha1)) {
+               tmp = xstrdup(ctx->qry.head);
+               ctx->qry.head = ctx->repo->defbranch;
+               ctx->page.status = 404;
+               ctx->page.statusmsg = "not found";
+               cgit_print_http_headers(ctx);
+               cgit_print_docstart(ctx);
+               cgit_print_pageheader(ctx);
+               cgit_print_error(fmt("Invalid branch: %s", tmp));
+               cgit_print_docend();
+               return 1;
+       }
+       return 0;
+}
+
+static void process_request(void *cbdata)
+{
+       struct cgit_context *ctx = cbdata;
+       struct cgit_cmd *cmd;
+
+       cmd = cgit_get_cmd(ctx);
+       if (!cmd) {
+               ctx->page.title = "cgit error";
+               cgit_print_http_headers(ctx);
+               cgit_print_docstart(ctx);
+               cgit_print_pageheader(ctx);
+               cgit_print_error("Invalid request");

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

-       setenv("GIT_DIR", fmt("%s/%s", cgit_root, cgit_query_repo), 1);
-       char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
-       cgit_print_docstart(title, item);
-       cgit_print_pageheader(title);
-       if (!cgit_query_page) {
-               cgit_print_summary();
-       } else if (!strcmp(cgit_query_page, "log")) {
-               cgit_print_log(cgit_query_head, 0, 100);
-       } else if (!strcmp(cgit_query_page, "tree")) {
-               cgit_print_tree(cgit_query_sha1);
-       } else if (!strcmp(cgit_query_page, "view")) {
-               cgit_print_view(cgit_query_sha1);
+
+       /* 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_http_headers(ctx);
+               cgit_print_docstart(ctx);
+               cgit_print_pageheader(ctx);
+               cgit_print_error(fmt("No repository selected"));
+               cgit_print_docend();
+               return;

        }
        }

-       cgit_print_docend();
+
+       if (ctx->repo && prepare_repo_cmd(ctx))
+               return;
+
+       if (cmd->want_layout) {
+               cgit_print_http_headers(ctx);
+               cgit_print_docstart(ctx);
+               cgit_print_pageheader(ctx);
+       }
+
+       cmd->fn(ctx);
+
+       if (cmd->want_layout)
+               cgit_print_docend();
+}
+
+int cmp_repos(const void *a, const void *b)
+{
+       const struct cgit_repo *ra = a, *rb = b;
+       return strcmp(ra->url, rb->url);
+}
+
+char *build_snapshot_setting(int bitmap)
+{
+       const struct cgit_snapshot_format *f;
+       char *result = xstrdup("");
+       char *tmp;
+       int len;
+
+       for (f = cgit_snapshot_formats; f->suffix; f++) {
+               if (f->bit & bitmap) {
+                       tmp = result;
+                       result = xstrdup(fmt("%s%s ", tmp, f->suffix));
+                       free(tmp);
+               }
+       }
+       len = strlen(result);
+       if (len)
+               result[len - 1] = '\0';
+       return result;

 }
 
 }
 

-static void cgit_fill_cache(struct cacheitem *item)
+char *get_first_line(char *txt)

 {
 {

-       htmlfd = item->fd;
-       item->st.st_mtime = time(NULL);
-       if (cgit_query_repo)
-               cgit_print_repo_page(item);
+       char *t = xstrdup(txt);
+       char *p = strchr(t, '\n');
+       if (p)
+               *p = '\0';
+       return t;
+}
+
+void print_repo(FILE *f, struct cgit_repo *repo)
+{
+       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);
+       }
+       if (repo->readme)
+               fprintf(f, "repo.readme=%s\n", repo->readme);
+       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->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)
+               fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
+       if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
+               fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
+       if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
+               fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
+       if (repo->snapshots != ctx.cfg.snapshots) {
+               char *tmp = build_snapshot_setting(repo->snapshots);
+               fprintf(f, "repo.snapshots=%s\n", 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));
+       fprintf(f, "\n");
+}
+
+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]);
+}
+
+/* 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)
+{
+       char *locked_rc;
+       int idx;
+       FILE *f;
+
+       locked_rc = xstrdup(fmt("%s.lock", cached_rc));
+       f = fopen(locked_rc, "wx");
+       if (!f) {
+               /* Inform about the error unless the lockfile already existed,
+                * since that only means we've got concurrent requests.
+                */
+               if (errno != EEXIST)
+                       fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
+                               locked_rc, strerror(errno), errno);
+               return errno;
+       }
+       idx = cgit_repolist.count;
+       if (ctx.cfg.project_list)
+               scan_projects(path, ctx.cfg.project_list, repo_config);

        else
        else

-               cgit_print_repolist(item);
+               scan_tree(path, repo_config);
+       print_repolist(f, &cgit_repolist, idx);
+       if (rename(locked_rc, cached_rc))
+               fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
+                       locked_rc, cached_rc, strerror(errno), errno);
+       fclose(f);
+       return 0;

 }
 
 }
 

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

 {
 {

-       int i = 0;
+       struct stat st;
+       char *cached_rc;
+       time_t age;
+       unsigned long hash;

 
 

-       cache_prepare(item);
- top:
-       if (++i > cgit_max_lock_attempts) {
-               die("cgit_refresh_cache: unable to lock %s: %s",
-                   item->name, strerror(errno));
+       hash = hash_str(path);
+       if (ctx.cfg.project_list)
+               hash += hash_str(ctx.cfg.project_list);
+       cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
+
+       if (stat(cached_rc, &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)) {
+                       if (ctx.cfg.project_list)
+                               scan_projects(path, ctx.cfg.project_list,
+                                             repo_config);
+                       else
+                               scan_tree(path, repo_config);
+               }
+               return;

        }
        }

-       if (!cache_exist(item)) {
-               if (!cache_lock(item)) {
-                       sleep(1);
-                       goto top;
+
+       parse_configfile(cached_rc, 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))
+               return;
+
+       /* 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())
+               return;
+
+       exit(generate_cached_repolist(path, cached_rc));
+}
+
+static void cgit_parse_args(int argc, const char **argv)
+{
+       int i;
+       int scan = 0;
+
+       for (i = 1; i < argc; i++) {
+               if (!strncmp(argv[i], "--cache=", 8)) {
+                       ctx.cfg.cache_root = xstrdup(argv[i]+8);

                }
                }

-               if (!cache_exist(item)) {
-                       cgit_fill_cache(item);
-                       cache_unlock(item);
-               } else {
-                       cache_cancel_lock(item);
+               if (!strcmp(argv[i], "--nocache")) {
+                       ctx.cfg.nocache = 1;

                }
                }

-       } else if (cache_expired(item) && cache_lock(item)) {
-               if (cache_expired(item)) {
-                       cgit_fill_cache(item);
-                       cache_unlock(item);
-               } else {
-                       cache_cancel_lock(item);
+               if (!strcmp(argv[i], "--nohttp")) {
+                       ctx.env.no_http = "1";
+               }
+               if (!strncmp(argv[i], "--query=", 8)) {
+                       ctx.qry.raw = xstrdup(argv[i]+8);
+               }
+               if (!strncmp(argv[i], "--repo=", 7)) {
+                       ctx.qry.repo = xstrdup(argv[i]+7);
+               }
+               if (!strncmp(argv[i], "--page=", 7)) {
+                       ctx.qry.page = xstrdup(argv[i]+7);
+               }
+               if (!strncmp(argv[i], "--head=", 7)) {
+                       ctx.qry.head = xstrdup(argv[i]+7);
+                       ctx.qry.has_symref = 1;
+               }
+               if (!strncmp(argv[i], "--sha1=", 7)) {
+                       ctx.qry.sha1 = xstrdup(argv[i]+7);
+                       ctx.qry.has_sha1 = 1;
+               }
+               if (!strncmp(argv[i], "--ofs=", 6)) {
+                       ctx.qry.ofs = atoi(argv[i]+6);
+               }
+               if (!strncmp(argv[i], "--scan-tree=", 12) ||
+                   !strncmp(argv[i], "--scan-path=", 12)) {
+                       /* HACK: the global snapshot bitmask 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().
+                        * BTW: we assume that there'll never be more than
+                        * 255 different snapshot formats supported by cgit...
+                        */
+                       ctx.cfg.snapshots = 0xFF;
+                       scan++;
+                       scan_tree(argv[i] + 12, 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 void cgit_print_cache(struct cacheitem *item)
+static int calc_ttl()

 {
 {

-       static char buf[4096];
-       ssize_t i;
+       if (!ctx.repo)
+               return ctx.cfg.cache_root_ttl;
+
+       if (!ctx.qry.page)
+               return ctx.cfg.cache_repo_ttl;

 
 

-       int fd = open(item->name, O_RDONLY);
-       if (fd<0)
-               die("Unable to open cached file %s", item->name);
+       if (ctx.qry.has_symref)
+               return ctx.cfg.cache_dynamic_ttl;

 
 

-       while((i=read(fd, buf, sizeof(buf))) > 0)
-               write(STDOUT_FILENO, buf, i);
+       if (ctx.qry.has_sha1)
+               return ctx.cfg.cache_static_ttl;

 
 

-       close(fd);
+       return ctx.cfg.cache_repo_ttl;

 }
 
 int main(int argc, const char **argv)
 {
 }
 
 int main(int argc, const char **argv)
 {

-       struct cacheitem item;
+       const char *path;
+       char *qry;
+       int err, ttl;

 
 

-       cgit_read_config("/etc/cgitrc", cgit_global_config_cb);
-       cgit_querystring = xstrdup(getenv("QUERY_STRING"));
-       cgit_parse_query(cgit_querystring, cgit_querystring_cb);
+       prepare_context(&ctx);
+       cgit_repolist.length = 0;
+       cgit_repolist.count = 0;
+       cgit_repolist.repos = NULL;

 
 

-       cgit_check_cache(&item);
-       cgit_print_cache(&item);
-       return 0;
+       cgit_parse_args(argc, argv);
+       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.
+        */
+       if (!ctx.cfg.virtual_root)
+               ctx.cfg.virtual_root = 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) {
+                       qry = ctx.qry.raw;
+                       ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
+                       free(qry);
+               } else
+                       ctx.qry.raw = xstrdup(ctx.qry.url);
+               cgit_parse_url(ctx.qry.url);
+       }
+
+       ttl = calc_ttl();
+       ctx.page.expires += ttl*60;
+       if (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, &ctx);
+       if (err)
+               cgit_print_error(fmt("Error processing page: %s (%d)",
+                                    strerror(err), err));
+       return err;

 }
 }