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106pre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
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.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
/* ui-tag.c: display a tag
 *
 * Copyright (C) 2007 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "html.h"
#include "ui-shared.h"

static void print_tag_content(char *buf)
{
	char *p;

	if (!buf)
		return;

	html("<div class='commit-subject'>");
	p = strchr(buf, '\n');
	if (p)
		*p = '\0';
	html_txt(buf);
	html("</div>");
	if (p) {
		html("<div class='commit-msg'>");
		html_txt(++p);
		html("</div>");
	}
}

void print_download_links(char *revname)
{
	html("<tr><th>download</th><td class='sha1'>");
	cgit_print_snapshot_links(ctx.qry.repo, ctx.qry.head,
				  revname, ctx.repo->snapshots);
	html("</td></tr>");
}

void cgit_print_tag(char *revname)
{
	unsigned char sha1[20];
	struct object *obj;
	struct tag *tag;
	struct taginfo *info;

	if (!revname)
		revname = ctx.qry.head;

	if (get_sha1(fmt("refs/tags/%s", revname), sha1)) {
		cgit_print_error(fmt("Bad tag reference: %s", revname));
		return;
	}
	obj = parse_object(sha1);
	if (!obj) {
		cgit_print_error(fmt("Bad object id: %s", sha1_to_hex(sha1)));
		return;
	}
	if (obj->type == OBJ_TAG) {
		tag = lookup_tag(sha1);
		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag))) {
			cgit_print_error(fmt("Bad tag object: %s", revname));
			return;
		}
		html("<table class='commit-info'>\n");
		htmlf("<tr><td>tag name</td><td>");
		html_txt(revname);
		htmlf(" (%s)</td></tr>\n", sha1_to_hex(sha1));
		if (info->tagger_date > 0) {
			html("<tr><td>tag date</td><td>");
			cgit_print_date(info->tagger_date, FMT_LONGDATE, ctx.cfg.local_time);
			html("</td></tr>\n");
		}
		if (info->tagger) {
			html("<tr><td>tagged by</td><td>");
			html_txt(info->tagger);
			if (info->tagger_email && !ctx.cfg.noplainemail) {
				html(" ");
				html_txt(info->tagger_email);
			}
			html("</td></tr>\n");
		}
		html("<tr><td>tagged object</td><td class='sha1'>");
		cgit_object_link(tag->tagged);
		html("</td></tr>\n");
		if (ctx.repo->snapshots)
			print_download_links(revname);
		html("</table>\n");
		print_tag_content(info->msg);
	} else {
		html("<table class='commit-info'>\n");
		htmlf("<tr><td>tag name</td><td>");
		html_txt(revname);
		html("</td></tr>\n");
		html("<tr><td>Tagged object</td><td class='sha1'>");
		cgit_object_link(obj);
		html("</td></tr>\n");
		if (ctx.repo->snapshots)
			print_download_links(revname);
		html("</table>\n");
        }
	return;
}
a> 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870
/* cgit.c: cgi for the git scm
 *
 * Copyright (C) 2006 Lars Hjemli
 * Copyright (C) 2010, 2012 Jason A. Donenfeld <Jason@zx2c4.com>
 *
 * 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;

void add_mimetype(const char *name, const char *value)
{
	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, filter_type filtertype)
{
	struct cgit_filter *f;
	int args_size = 0;
	int extra_args;

	if (!cmd || !cmd[0])
		return NULL;

	switch (filtertype) {
		case SOURCE:
			extra_args = 1;
			break;

		case ABOUT:
		case COMMIT:
		default:
			extra_args = 0;
			break;
	}

	f = xmalloc(sizeof(struct cgit_filter));
	f->cmd = xstrdup(cmd);
	args_size = (2 + extra_args) * sizeof(char *);
	f->argv = xmalloc(args_size);
	memset(f->argv, 0, args_size);
	f->argv[0] = f->cmd;
	return f;
}

static void process_cached_repolist(const char *path);

void repo_config(struct cgit_repo *repo, const char *name, const char *value)
{
	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, "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, "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 (!prefixcmp(name, "module-link.")) {
		item = string_list_append(&repo->submodules, name + 12);
		item->util = xstrdup(value);
	} else if (!strcmp(name, "section"))
		repo->section = xstrdup(value);
	else if (!strcmp(name, "readme") && value != NULL)
		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 (ctx.cfg.enable_filter_overrides) {
		if (!strcmp(name, "about-filter"))
			repo->about_filter = new_filter(value, ABOUT);
		else if (!strcmp(name, "commit-filter"))
			repo->commit_filter = new_filter(value, COMMIT);
		else if (!strcmp(name, "source-filter"))
			repo->source_filter = new_filter(value, SOURCE);
	}
}

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-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-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, "case-sensitive-sort"))
		ctx.cfg.case_sensitive_sort = atoi(value);
	else if (!strcmp(name, "about-filter"))
		ctx.cfg.about_filter = new_filter(value, ABOUT);
	else if (!strcmp(name, "commit-filter"))
		ctx.cfg.commit_filter = new_filter(value, COMMIT);
	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 = 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.ssdiff = atoi(value);
	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 (!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);
		ctx.qry.has_ssdiff = 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);
	}
}

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.case_sensitive_sort = 1;
	ctx->cfg.css = "/cgit.css";
	ctx->cfg.logo = "/cgit.png";
	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.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 char *guess_defbranch(const char *repo_path)
{
	const char *ref;
	unsigned char sha1[20];

	ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
	if (!ref || prefixcmp(ref, "refs/heads/"))
		return "master";
	return xstrdup(ref + 11);
}

static int prepare_repo_cmd(struct cgit_context *ctx)
{
	char *tmp;
	unsigned char sha1[20];
	int nongit = 0;
	int rc;

	setenv("GIT_DIR", ctx->repo->path, 1);
	setup_git_directory_gently(&nongit);
	if (nongit) {
		rc = errno;
		ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
				      "config error");
		tmp = fmt("Failed to open %s: %s",
			  ctx->repo->name,
			  rc ? strerror(rc) : "Not a valid git repository");
		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->repo->defbranch)
		ctx->repo->defbranch = guess_defbranch(ctx->repo->path);

	if (!ctx->qry.head) {
		ctx->qry.nohead = 1;
		ctx->qry.head = find_default_branch(ctx->repo);
	}

	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;
	}
	sort_string_list(&ctx->repo->submodules);
	cgit_prepare_repo_env(ctx->repo);
	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";
		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("Invalid request");
		cgit_print_docend();
		return;
	}

	if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
		html_status(404, "Not found", 0);
		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_http_headers(ctx);
		cgit_print_docstart(ctx);
		cgit_print_pageheader(ctx);
		cgit_print_error(fmt("No repository selected"));
		cgit_print_docend();
		return;
	}

	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;
}

char *get_first_line(char *txt)
{
	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
		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 process_cached_repolist(const char *path)
{
	struct stat st;
	char *cached_rc;
	time_t age;
	unsigned long hash;

	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;
	}

	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 (!strcmp(argv[i], "--nocache")) {
			ctx.cfg.nocache = 1;
		}
		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 int calc_ttl()
{
	if (!ctx.repo)
		return ctx.cfg.cache_root_ttl;

	if (!ctx.qry.page)
		return ctx.cfg.cache_repo_ttl;

	if (ctx.qry.has_symref)
		return ctx.cfg.cache_dynamic_ttl;

	if (ctx.qry.has_sha1)
		return ctx.cfg.cache_static_ttl;

	return ctx.cfg.cache_repo_ttl;
}

int main(int argc, const char **argv)
{
	const char *path;
	char *qry;
	int err, ttl;

	prepare_context(&ctx);
	cgit_repolist.length = 0;
	cgit_repolist.count = 0;
	cgit_repolist.repos = NULL;

	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, minus any possibly
	 * trailing slashes.
	 */
	if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {
		ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
		if (!ctx.cfg.virtual_root)
			ctx.cfg.virtual_root = "";
	}

	/* 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;
}