X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/0255821e22678d4c58c809efe17bf2798835d5b9..db4b735464aa9a3a329494b7f042413a65e182f2:/ui-shared.c

diff --git a/ui-shared.c b/ui-shared.c
index 968933f..f8e5bef 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -1,12 +1,13 @@
 /* ui-shared.c: common web output functions
  *
- * 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"
+#include "ui-shared.h"
 #include "cmd.h"
 #include "html.h"
 
@@ -27,14 +28,25 @@ static char *http_date(time_t t)
 		   tm->tm_hour, tm->tm_min, tm->tm_sec);
 }
 
-void cgit_print_error(const char *msg)
+void cgit_print_error(const char *fmt, ...)
 {
+	va_list ap;
+	va_start(ap, fmt);
+	cgit_vprint_error(fmt, ap);
+	va_end(ap);
+}
+
+void cgit_vprint_error(const char *fmt, va_list ap)
+{
+	va_list cp;
 	html("<div class='error'>");
-	html_txt(msg);
+	va_copy(cp, ap);
+	html_vtxtf(fmt, cp);
+	va_end(cp);
 	html("</div>\n");
 }
 
-char *cgit_httpscheme()
+const char *cgit_httpscheme()
 {
 	if (ctx.env.https && !strcmp(ctx.env.https, "on"))
 		return "https://";
@@ -42,7 +54,7 @@ char *cgit_httpscheme()
 		return "http://";
 }
 
-char *cgit_hosturl()
+const char *cgit_hosturl()
 {
 	if (ctx.env.http_host)
 		return ctx.env.http_host;
@@ -50,44 +62,51 @@ char *cgit_hosturl()
 		return NULL;
 	if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
 		return ctx.env.server_name;
-	return xstrdup(fmt("%s:%s", ctx.env.server_name, ctx.env.server_port));
+	return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
 }
 
-char *cgit_rooturl()
+const char *cgit_rooturl()
 {
 	if (ctx.cfg.virtual_root)
-		return fmt("%s/", ctx.cfg.virtual_root);
+		return ctx.cfg.virtual_root;
 	else
 		return ctx.cfg.script_name;
 }
 
+const char *cgit_loginurl()
+{
+	static const char *login_url = 0;
+	if (!login_url)
+		login_url = fmtalloc("%s?p=login", cgit_rooturl());
+	return login_url;
+}
+
 char *cgit_repourl(const char *reponame)
 {
-	if (ctx.cfg.virtual_root) {
-		return fmt("%s/%s/", ctx.cfg.virtual_root, reponame);
-	} else {
-		return fmt("?r=%s", reponame);
-	}
+	if (ctx.cfg.virtual_root)
+		return fmtalloc("%s%s/", ctx.cfg.virtual_root, reponame);
+	else
+		return fmtalloc("?r=%s", reponame);
 }
 
 char *cgit_fileurl(const char *reponame, const char *pagename,
 		   const char *filename, const char *query)
 {
-	char *tmp;
+	struct strbuf sb = STRBUF_INIT;
 	char *delim;
 
 	if (ctx.cfg.virtual_root) {
-		tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
-			  pagename, (filename ? filename:""));
+		strbuf_addf(&sb, "%s%s/%s/%s", ctx.cfg.virtual_root, reponame,
+			    pagename, (filename ? filename:""));
 		delim = "?";
 	} else {
-		tmp = fmt("?url=%s/%s/%s", reponame, pagename,
-			  (filename ? filename : ""));
+		strbuf_addf(&sb, "?url=%s/%s/%s", reponame, pagename,
+			    (filename ? filename : ""));
 		delim = "&amp;";
 	}
 	if (query)
-		tmp = fmt("%s%s%s", tmp, delim, query);
-	return tmp;
+		strbuf_addf(&sb, "%s%s", delim, query);
+	return strbuf_detach(&sb, NULL);
 }
 
 char *cgit_pageurl(const char *reponame, const char *pagename,
@@ -109,7 +128,7 @@ const char *cgit_repobasename(const char *reponame)
 	/* strip trailing slashes */
 	while (p && rvbuf[p] == '/') rvbuf[p--] = 0;
 	/* strip trailing .git */
-	if (p >= 3 && !strncmp(&rvbuf[p-3], ".git", 4)) {
+	if (p >= 3 && starts_with(&rvbuf[p-3], ".git")) {
 		p -= 3; rvbuf[p--] = 0;
 	}
 	/* strip more trailing slashes if any */
@@ -125,12 +144,10 @@ static void site_url(const char *page, const char *search, const char *sort, int
 {
 	char *delim = "?";
 
-	if (ctx.cfg.virtual_root) {
-		html_attr(ctx.cfg.virtual_root);
-		if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
-			html("/");
-	} else
-		html(ctx.cfg.script_name);
+	if (!page)
+		html_attr(ctx.qry.url);
+	else
+		html_attr(cgit_rooturl());
 
 	if (page) {
 		htmlf("?p=%s", page);
@@ -200,8 +217,6 @@ static char *repolink(const char *title, const char *class, const char *page,
 	html(" href='");
 	if (ctx.cfg.virtual_root) {
 		html_url_path(ctx.cfg.virtual_root);
-		if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
-			html("/");
 		html_url_path(ctx.repo->url);
 		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 			html("/");
@@ -212,7 +227,7 @@ static char *repolink(const char *title, const char *class, const char *page,
 				html_url_path(path);
 		}
 	} else {
-		html(ctx.cfg.script_name);
+		html_url_path(ctx.cfg.script_name);
 		html("?url=");
 		html_url_arg(ctx.repo->url);
 		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
@@ -258,9 +273,9 @@ void cgit_summary_link(const char *name, const char *title, const char *class,
 }
 
 void cgit_tag_link(const char *name, const char *title, const char *class,
-		   const char *head, const char *rev)
+		   const char *tag)
 {
-	reporevlink("tag", name, title, class, head, rev, NULL);
+	reporevlink("tag", name, title, class, tag, NULL, NULL);
 }
 
 void cgit_tree_link(const char *name, const char *title, const char *class,
@@ -313,8 +328,7 @@ void cgit_log_link(const char *name, const char *title, const char *class,
 }
 
 void cgit_commit_link(char *name, const char *title, const char *class,
-		      const char *head, const char *rev, const char *path,
-		      int toggle_ssdiff)
+		      const char *head, const char *rev, const char *path)
 {
 	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 		name[ctx.cfg.max_msg_len] = '\0';
@@ -332,9 +346,9 @@ void cgit_commit_link(char *name, const char *title, const char *class,
 		html_url_arg(rev);
 		delim = "&amp;";
 	}
-	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
+	if (ctx.qry.difftype) {
 		html(delim);
-		html("ss=1");
+		htmlf("dt=%d", ctx.qry.difftype);
 		delim = "&amp;";
 	}
 	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
@@ -371,7 +385,7 @@ void cgit_snapshot_link(const char *name, const char *title, const char *class,
 
 void cgit_diff_link(const char *name, const char *title, const char *class,
 		    const char *head, const char *new_rev, const char *old_rev,
-		    const char *path, int toggle_ssdiff)
+		    const char *path)
 {
 	char *delim;
 
@@ -388,9 +402,9 @@ void cgit_diff_link(const char *name, const char *title, const char *class,
 		html_url_arg(old_rev);
 		delim = "&amp;";
 	}
-	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
+	if (ctx.qry.difftype) {
 		html(delim);
-		html("ss=1");
+		htmlf("dt=%d", ctx.qry.difftype);
 		delim = "&amp;";
 	}
 	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
@@ -421,59 +435,58 @@ void cgit_stats_link(const char *name, const char *title, const char *class,
 	reporevlink("stats", name, title, class, head, NULL, path);
 }
 
-static void cgit_self_link(char *name, const char *title, const char *class,
-			   struct cgit_context *ctx)
-{
-	if (!strcmp(ctx->qry.page, "repolist"))
-		cgit_index_link(name, title, class, ctx->qry.search, ctx->qry.sort,
-				ctx->qry.ofs);
-	else if (!strcmp(ctx->qry.page, "summary"))
-		cgit_summary_link(name, title, class, ctx->qry.head);
-	else if (!strcmp(ctx->qry.page, "tag"))
-		cgit_tag_link(name, title, class, ctx->qry.head,
-			      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
-	else if (!strcmp(ctx->qry.page, "tree"))
-		cgit_tree_link(name, title, class, ctx->qry.head,
-			       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
-			       ctx->qry.path);
-	else if (!strcmp(ctx->qry.page, "plain"))
-		cgit_plain_link(name, title, class, ctx->qry.head,
-				ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
-				ctx->qry.path);
-	else if (!strcmp(ctx->qry.page, "log"))
-		cgit_log_link(name, title, class, ctx->qry.head,
-			      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
-			      ctx->qry.path, ctx->qry.ofs,
-			      ctx->qry.grep, ctx->qry.search,
-			      ctx->qry.showmsg);
-	else if (!strcmp(ctx->qry.page, "commit"))
-		cgit_commit_link(name, title, class, ctx->qry.head,
-				 ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
-				 ctx->qry.path, 0);
-	else if (!strcmp(ctx->qry.page, "patch"))
-		cgit_patch_link(name, title, class, ctx->qry.head,
-				ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
-				ctx->qry.path);
-	else if (!strcmp(ctx->qry.page, "refs"))
-		cgit_refs_link(name, title, class, ctx->qry.head,
-			       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
-			       ctx->qry.path);
-	else if (!strcmp(ctx->qry.page, "snapshot"))
-		cgit_snapshot_link(name, title, class, ctx->qry.head,
-				   ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
-				   ctx->qry.path);
-	else if (!strcmp(ctx->qry.page, "diff"))
-		cgit_diff_link(name, title, class, ctx->qry.head,
-			       ctx->qry.sha1, ctx->qry.sha2,
-			       ctx->qry.path, 0);
-	else if (!strcmp(ctx->qry.page, "stats"))
-		cgit_stats_link(name, title, class, ctx->qry.head,
-				ctx->qry.path);
+static void cgit_self_link(char *name, const char *title, const char *class)
+{
+	if (!strcmp(ctx.qry.page, "repolist"))
+		cgit_index_link(name, title, class, ctx.qry.search, ctx.qry.sort,
+				ctx.qry.ofs);
+	else if (!strcmp(ctx.qry.page, "summary"))
+		cgit_summary_link(name, title, class, ctx.qry.head);
+	else if (!strcmp(ctx.qry.page, "tag"))
+		cgit_tag_link(name, title, class, ctx.qry.has_sha1 ?
+			       ctx.qry.sha1 : ctx.qry.head);
+	else if (!strcmp(ctx.qry.page, "tree"))
+		cgit_tree_link(name, title, class, ctx.qry.head,
+			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			       ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "plain"))
+		cgit_plain_link(name, title, class, ctx.qry.head,
+				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "log"))
+		cgit_log_link(name, title, class, ctx.qry.head,
+			      ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			      ctx.qry.path, ctx.qry.ofs,
+			      ctx.qry.grep, ctx.qry.search,
+			      ctx.qry.showmsg);
+	else if (!strcmp(ctx.qry.page, "commit"))
+		cgit_commit_link(name, title, class, ctx.qry.head,
+				 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				 ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "patch"))
+		cgit_patch_link(name, title, class, ctx.qry.head,
+				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "refs"))
+		cgit_refs_link(name, title, class, ctx.qry.head,
+			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			       ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "snapshot"))
+		cgit_snapshot_link(name, title, class, ctx.qry.head,
+				   ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				   ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "diff"))
+		cgit_diff_link(name, title, class, ctx.qry.head,
+			       ctx.qry.sha1, ctx.qry.sha2,
+			       ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "stats"))
+		cgit_stats_link(name, title, class, ctx.qry.head,
+				ctx.qry.path);
 	else {
 		/* Don't known how to make link for this page */
-		repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
+		repolink(title, class, ctx.qry.page, ctx.qry.head, ctx.qry.path);
 		html("><!-- cgit_self_link() doesn't know how to make link for page '");
-		html_txt(ctx->qry.page);
+		html_txt(ctx.qry.page);
 		html("' -->");
 		html_txt(name);
 		html("</a>");
@@ -489,7 +502,7 @@ void cgit_object_link(struct object *obj)
 	shortrev[10] = '\0';
 	if (obj->type == OBJ_COMMIT) {
 		cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
-				 ctx.qry.head, fullrev, NULL, 0);
+				 ctx.qry.head, fullrev, NULL);
 		return;
 	} else if (obj->type == OBJ_TREE)
 		page = "tree";
@@ -523,6 +536,7 @@ void cgit_submodule_link(const char *class, char *path, const char *rev)
 	char tail, *dir;
 	size_t len;
 
+	len = 0;
 	tail = 0;
 	list = &ctx.repo->submodules;
 	item = lookup_path(list, path);
@@ -539,21 +553,21 @@ void cgit_submodule_link(const char *class, char *path, const char *rev)
 		htmlf("class='%s' ", class);
 	html("href='");
 	if (item) {
-		html_attr(fmt(item->util, rev));
+		html_attrf(item->util, rev);
 	} else if (ctx.repo->module_link) {
 		dir = strrchr(path, '/');
 		if (dir)
 			dir++;
 		else
 			dir = path;
-		html_attr(fmt(ctx.repo->module_link, dir, rev));
+		html_attrf(ctx.repo->module_link, dir, rev);
 	} else {
 		html("#");
 	}
 	html("'>");
 	html_txt(path);
 	html("</a>");
-	html_txt(fmt(" @ %.7s", rev));
+	html_txtf(" @ %.7s", rev);
 	if (item && tail)
 		path[len - 1] = tail;
 }
@@ -573,6 +587,23 @@ void cgit_print_date(time_t secs, const char *format, int local_time)
 	html_txt(buf);
 }
 
+static void print_rel_date(time_t t, double value,
+	const char *class, const char *suffix)
+{
+	char buf[64];
+	struct tm *time;
+
+	if (ctx.cfg.local_time)
+		time = localtime(&t);
+	else
+		time = gmtime(&t);
+	strftime(buf, sizeof(buf) - 1, FMT_LONGDATE, time);
+
+	htmlf("<span class='%s' title='", class);
+	html_attr(buf);
+	htmlf("'>%.0f %s</span>", value, suffix);
+}
+
 void cgit_print_age(time_t t, time_t max_relative, const char *format)
 {
 	time_t now, secs;
@@ -581,6 +612,8 @@ void cgit_print_age(time_t t, time_t max_relative, const char *format)
 		return;
 	time(&now);
 	secs = now - t;
+	if (secs < 0)
+		secs = 0;
 
 	if (secs > max_relative && max_relative >= 0) {
 		cgit_print_date(t, format, ctx.cfg.local_time);
@@ -588,100 +621,111 @@ void cgit_print_age(time_t t, time_t max_relative, const char *format)
 	}
 
 	if (secs < TM_HOUR * 2) {
-		htmlf("<span class='age-mins'>%.0f min.</span>",
-		      secs * 1.0 / TM_MIN);
+		print_rel_date(t, secs * 1.0 / TM_MIN, "age-mins", "min.");
 		return;
 	}
 	if (secs < TM_DAY * 2) {
-		htmlf("<span class='age-hours'>%.0f hours</span>",
-		      secs * 1.0 / TM_HOUR);
+		print_rel_date(t, secs * 1.0 / TM_HOUR, "age-hours", "hours");
 		return;
 	}
 	if (secs < TM_WEEK * 2) {
-		htmlf("<span class='age-days'>%.0f days</span>",
-		      secs * 1.0 / TM_DAY);
+		print_rel_date(t, secs * 1.0 / TM_DAY, "age-days", "days");
 		return;
 	}
 	if (secs < TM_MONTH * 2) {
-		htmlf("<span class='age-weeks'>%.0f weeks</span>",
-		      secs * 1.0 / TM_WEEK);
+		print_rel_date(t, secs * 1.0 / TM_WEEK, "age-weeks", "weeks");
 		return;
 	}
 	if (secs < TM_YEAR * 2) {
-		htmlf("<span class='age-months'>%.0f months</span>",
-		      secs * 1.0 / TM_MONTH);
+		print_rel_date(t, secs * 1.0 / TM_MONTH, "age-months", "months");
 		return;
 	}
-	htmlf("<span class='age-years'>%.0f years</span>",
-	      secs * 1.0 / TM_YEAR);
+	print_rel_date(t, secs * 1.0 / TM_YEAR, "age-years", "years");
 }
 
-void cgit_print_http_headers(struct cgit_context *ctx)
+void cgit_print_http_headers(void)
 {
-	if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
+	if (ctx.env.no_http && !strcmp(ctx.env.no_http, "1"))
 		return;
 
-	if (ctx->page.status)
-		htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
-	if (ctx->page.mimetype && ctx->page.charset)
-		htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
-		      ctx->page.charset);
-	else if (ctx->page.mimetype)
-		htmlf("Content-Type: %s\n", ctx->page.mimetype);
-	if (ctx->page.size)
-		htmlf("Content-Length: %zd\n", ctx->page.size);
-	if (ctx->page.filename)
+	if (ctx.page.status)
+		htmlf("Status: %d %s\n", ctx.page.status, ctx.page.statusmsg);
+	if (ctx.page.mimetype && ctx.page.charset)
+		htmlf("Content-Type: %s; charset=%s\n", ctx.page.mimetype,
+		      ctx.page.charset);
+	else if (ctx.page.mimetype)
+		htmlf("Content-Type: %s\n", ctx.page.mimetype);
+	if (ctx.page.size)
+		htmlf("Content-Length: %zd\n", ctx.page.size);
+	if (ctx.page.filename)
 		htmlf("Content-Disposition: inline; filename=\"%s\"\n",
-		      ctx->page.filename);
-	htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
-	htmlf("Expires: %s\n", http_date(ctx->page.expires));
-	if (ctx->page.etag)
-		htmlf("ETag: \"%s\"\n", ctx->page.etag);
+		      ctx.page.filename);
+	if (!ctx.env.authenticated)
+		html("Cache-Control: no-cache, no-store\n");
+	htmlf("Last-Modified: %s\n", http_date(ctx.page.modified));
+	htmlf("Expires: %s\n", http_date(ctx.page.expires));
+	if (ctx.page.etag)
+		htmlf("ETag: \"%s\"\n", ctx.page.etag);
 	html("\n");
-	if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
+	if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
 		exit(0);
 }
 
-void cgit_print_docstart(struct cgit_context *ctx)
+static void print_rel_vcs_link(const char *url)
+{
+	html("<link rel='vcs-git' href='");
+	html_attr(url);
+	html("' title='");
+	html_attr(ctx.repo->name);
+	html(" Git repository'/>\n");
+}
+
+void cgit_print_docstart(void)
 {
-	if (ctx->cfg.embedded) {
-		if (ctx->cfg.header)
-			html_include(ctx->cfg.header);
+	if (ctx.cfg.embedded) {
+		if (ctx.cfg.header)
+			html_include(ctx.cfg.header);
 		return;
 	}
 
-	char *host = cgit_hosturl();
+	const char *host = cgit_hosturl();
 	html(cgit_doctype);
 	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 	html("<head>\n");
 	html("<title>");
-	html_txt(ctx->page.title);
+	html_txt(ctx.page.title);
 	html("</title>\n");
 	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
-	if (ctx->cfg.robots && *ctx->cfg.robots)
-		htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
+	if (ctx.cfg.robots && *ctx.cfg.robots)
+		htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
 	html("<link rel='stylesheet' type='text/css' href='");
-	html_attr(ctx->cfg.css);
+	html_attr(ctx.cfg.css);
 	html("'/>\n");
-	if (ctx->cfg.favicon) {
+	if (ctx.cfg.favicon) {
 		html("<link rel='shortcut icon' href='");
-		html_attr(ctx->cfg.favicon);
+		html_attr(ctx.cfg.favicon);
 		html("'/>\n");
 	}
-	if (host && ctx->repo && ctx->qry.head) {
+	if (host && ctx.repo && ctx.qry.head) {
+		struct strbuf sb = STRBUF_INIT;
+		strbuf_addf(&sb, "h=%s", ctx.qry.head);
+
 		html("<link rel='alternate' title='Atom feed' href='");
 		html(cgit_httpscheme());
 		html_attr(cgit_hosturl());
-		html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
-				       fmt("h=%s", ctx->qry.head)));
+		html_attr(cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
+				       sb.buf));
 		html("' type='application/atom+xml'/>\n");
+		strbuf_release(&sb);
 	}
-	if (ctx->cfg.head_include)
-		html_include(ctx->cfg.head_include);
+	if (ctx.repo)
+		cgit_add_clone_urls(print_rel_vcs_link);
+	if (ctx.cfg.head_include)
+		html_include(ctx.cfg.head_include);
 	html("</head>\n");
 	html("<body>\n");
-	if (ctx->cfg.header)
-		html_include(ctx->cfg.header);
+	if (ctx.cfg.header)
+		html_include(ctx.cfg.header);
 }
 
 void cgit_print_docend()
@@ -696,7 +740,7 @@ void cgit_print_docend()
 	if (ctx.cfg.footer)
 		html_include(ctx.cfg.footer);
 	else {
-		htmlf("<div class='footer'>generated  by cgit %s at ",
+		htmlf("<div class='footer'>generated by <a href='http://git.zx2c4.com/cgit/about/'>cgit %s</a> at ",
 			cgit_version);
 		cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 		html("</div>\n");
@@ -705,6 +749,31 @@ void cgit_print_docend()
 	html("</body>\n</html>\n");
 }
 
+static void add_clone_urls(void (*fn)(const char *), char *txt, char *suffix)
+{
+	struct strbuf **url_list = strbuf_split_str(txt, ' ', 0);
+	int i;
+
+	for (i = 0; url_list[i]; i++) {
+		strbuf_rtrim(url_list[i]);
+		if (url_list[i]->len == 0)
+			continue;
+		if (suffix && *suffix)
+			strbuf_addf(url_list[i], "/%s", suffix);
+		fn(url_list[i]->buf);
+	}
+
+	strbuf_list_free(url_list);
+}
+
+void cgit_add_clone_urls(void (*fn)(const char *))
+{
+	if (ctx.repo->clone_url)
+		add_clone_urls(fn, expand_macros(ctx.repo->clone_url), NULL);
+	else if (ctx.cfg.clone_prefix)
+		add_clone_urls(fn, ctx.cfg.clone_prefix, ctx.repo->url);
+}
+
 static int print_branch_option(const char *refname, const unsigned char *sha1,
 			       int flags, void *cb_data)
 {
@@ -716,13 +785,14 @@ static int print_branch_option(const char *refname, const unsigned char *sha1,
 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 				const char *page)
 {
-	char *url;
-
 	if (!ctx.cfg.virtual_root) {
-		url = fmt("%s/%s", ctx.qry.repo, page);
+		struct strbuf url = STRBUF_INIT;
+
+		strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 		if (ctx.qry.vpath)
-			url = fmt("%s/%s", url, ctx.qry.vpath);
-		html_hidden("url", url);
+			strbuf_addf(&url, "/%s", ctx.qry.vpath);
+		html_hidden("url", url.buf);
+		strbuf_release(&url);
 	}
 
 	if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
@@ -744,47 +814,47 @@ void cgit_add_hidden_formfields(int incl_head, int incl_search,
 	}
 }
 
-static const char *hc(struct cgit_context *ctx, const char *page)
+static const char *hc(const char *page)
 {
-	return strcmp(ctx->qry.page, page) ? NULL : "active";
+	return strcmp(ctx.qry.page, page) ? NULL : "active";
 }
 
-static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
+static void cgit_print_path_crumbs(char *path)
 {
-	char *old_path = ctx->qry.path;
+	char *old_path = ctx.qry.path;
 	char *p = path, *q, *end = path + strlen(path);
 
-	ctx->qry.path = NULL;
-	cgit_self_link("root", NULL, NULL, ctx);
-	ctx->qry.path = p = path;
+	ctx.qry.path = NULL;
+	cgit_self_link("root", NULL, NULL);
+	ctx.qry.path = p = path;
 	while (p < end) {
 		if (!(q = strchr(p, '/')))
 			q = end;
 		*q = '\0';
 		html_txt("/");
-		cgit_self_link(p, NULL, NULL, ctx);
+		cgit_self_link(p, NULL, NULL);
 		if (q < end)
 			*q = '/';
 		p = q + 1;
 	}
-	ctx->qry.path = old_path;
+	ctx.qry.path = old_path;
 }
 
-static void print_header(struct cgit_context *ctx)
+static void print_header(void)
 {
 	char *logo = NULL, *logo_link = NULL;
 
 	html("<table id='header'>\n");
 	html("<tr>\n");
 
-	if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
-		logo = ctx->repo->logo;
+	if (ctx.repo && ctx.repo->logo && *ctx.repo->logo)
+		logo = ctx.repo->logo;
 	else
-		logo = ctx->cfg.logo;
-	if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
-		logo_link = ctx->repo->logo_link;
+		logo = ctx.cfg.logo;
+	if (ctx.repo && ctx.repo->logo_link && *ctx.repo->logo_link)
+		logo_link = ctx.repo->logo_link;
 	else
-		logo_link = ctx->cfg.logo_link;
+		logo_link = ctx.cfg.logo_link;
 	if (logo && *logo) {
 		html("<td class='logo' rowspan='2'><a href='");
 		if (logo_link && *logo_link)
@@ -797,102 +867,104 @@ static void print_header(struct cgit_context *ctx)
 	}
 
 	html("<td class='main'>");
-	if (ctx->repo) {
+	if (ctx.repo) {
 		cgit_index_link("index", NULL, NULL, NULL, NULL, 0);
 		html(" : ");
-		cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
-		html("</td><td class='form'>");
-		html("<form method='get' action=''>\n");
-		cgit_add_hidden_formfields(0, 1, ctx->qry.page);
-		html("<select name='h' onchange='this.form.submit();'>\n");
-		for_each_branch_ref(print_branch_option, ctx->qry.head);
-		html("</select> ");
-		html("<input type='submit' name='' value='switch'/>");
-		html("</form>");
+		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
+		if (ctx.env.authenticated) {
+			html("</td><td class='form'>");
+			html("<form method='get' action=''>\n");
+			cgit_add_hidden_formfields(0, 1, ctx.qry.page);
+			html("<select name='h' onchange='this.form.submit();'>\n");
+			for_each_branch_ref(print_branch_option, ctx.qry.head);
+			html("</select> ");
+			html("<input type='submit' name='' value='switch'/>");
+			html("</form>");
+		}
 	} else
-		html_txt(ctx->cfg.root_title);
+		html_txt(ctx.cfg.root_title);
 	html("</td></tr>\n");
 
 	html("<tr><td class='sub'>");
-	if (ctx->repo) {
-		html_txt(ctx->repo->desc);
+	if (ctx.repo) {
+		html_txt(ctx.repo->desc);
 		html("</td><td class='sub right'>");
-		html_txt(ctx->repo->owner);
+		html_txt(ctx.repo->owner);
 	} else {
-		if (ctx->cfg.root_desc)
-			html_txt(ctx->cfg.root_desc);
-		else if (ctx->cfg.index_info)
-			html_include(ctx->cfg.index_info);
+		if (ctx.cfg.root_desc)
+			html_txt(ctx.cfg.root_desc);
+		else if (ctx.cfg.index_info)
+			html_include(ctx.cfg.index_info);
 	}
 	html("</td></tr></table>\n");
 }
 
-void cgit_print_pageheader(struct cgit_context *ctx)
+void cgit_print_pageheader(void)
 {
 	html("<div id='cgit'>");
-	if (!ctx->cfg.noheader)
-		print_header(ctx);
+	if (!ctx.env.authenticated || !ctx.cfg.noheader)
+		print_header();
 
 	html("<table class='tabs'><tr><td>\n");
-	if (ctx->repo) {
-		cgit_summary_link("summary", NULL, hc(ctx, "summary"),
-				  ctx->qry.head);
-		cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
-			       ctx->qry.sha1, NULL);
-		cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
-			      NULL, ctx->qry.vpath, 0, NULL, NULL,
-			      ctx->qry.showmsg);
-		cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
-			       ctx->qry.sha1, ctx->qry.vpath);
-		cgit_commit_link("commit", NULL, hc(ctx, "commit"),
-				 ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
-		cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
-			       ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
-		if (ctx->repo->max_stats)
-			cgit_stats_link("stats", NULL, hc(ctx, "stats"),
-					ctx->qry.head, ctx->qry.vpath);
-		if (ctx->repo->readme)
+	if (ctx.env.authenticated && ctx.repo) {
+		if (ctx.repo->readme.nr)
 			reporevlink("about", "about", NULL,
-				    hc(ctx, "about"), ctx->qry.head, NULL,
+				    hc("about"), ctx.qry.head, NULL,
 				    NULL);
+		cgit_summary_link("summary", NULL, hc("summary"),
+				  ctx.qry.head);
+		cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
+			       ctx.qry.sha1, NULL);
+		cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
+			      NULL, ctx.qry.vpath, 0, NULL, NULL,
+			      ctx.qry.showmsg);
+		cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
+			       ctx.qry.sha1, ctx.qry.vpath);
+		cgit_commit_link("commit", NULL, hc("commit"),
+				 ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
+		cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
+			       ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
+		if (ctx.repo->max_stats)
+			cgit_stats_link("stats", NULL, hc("stats"),
+					ctx.qry.head, ctx.qry.vpath);
 		html("</td><td class='form'>");
 		html("<form class='right' method='get' action='");
-		if (ctx->cfg.virtual_root)
-			html_url_path(cgit_fileurl(ctx->qry.repo, "log",
-						   ctx->qry.vpath, NULL));
+		if (ctx.cfg.virtual_root)
+			html_url_path(cgit_fileurl(ctx.qry.repo, "log",
+						   ctx.qry.vpath, NULL));
 		html("'>\n");
 		cgit_add_hidden_formfields(1, 0, "log");
 		html("<select name='qt'>\n");
-		html_option("grep", "log msg", ctx->qry.grep);
-		html_option("author", "author", ctx->qry.grep);
-		html_option("committer", "committer", ctx->qry.grep);
-		html_option("range", "range", ctx->qry.grep);
+		html_option("grep", "log msg", ctx.qry.grep);
+		html_option("author", "author", ctx.qry.grep);
+		html_option("committer", "committer", ctx.qry.grep);
+		html_option("range", "range", ctx.qry.grep);
 		html("</select>\n");
 		html("<input class='txt' type='text' size='10' name='q' value='");
-		html_attr(ctx->qry.search);
+		html_attr(ctx.qry.search);
 		html("'/>\n");
 		html("<input type='submit' value='search'/>\n");
 		html("</form>\n");
-	} else {
-		site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, NULL, 0);
-		if (ctx->cfg.root_readme)
-			site_link("about", "about", NULL, hc(ctx, "about"),
+	} else if (ctx.env.authenticated) {
+		site_link(NULL, "index", NULL, hc("repolist"), NULL, NULL, 0);
+		if (ctx.cfg.root_readme)
+			site_link("about", "about", NULL, hc("about"),
 				  NULL, NULL, 0);
 		html("</td><td class='form'>");
 		html("<form method='get' action='");
-		html_attr(cgit_rooturl());
+		html_attr(ctx.qry.url);
 		html("'>\n");
 		html("<input type='text' name='q' size='10' value='");
-		html_attr(ctx->qry.search);
+		html_attr(ctx.qry.search);
 		html("'/>\n");
 		html("<input type='submit' value='search'/>\n");
 		html("</form>");
 	}
 	html("</td></tr></table>\n");
-	if (ctx->qry.vpath) {
+	if (ctx.env.authenticated && ctx.qry.vpath) {
 		html("<div class='path'>");
 		html("path: ");
-		cgit_print_path_crumbs(ctx, ctx->qry.vpath);
+		cgit_print_path_crumbs(ctx.qry.vpath);
 		html("</div>");
 	}
 	html("<div class='content'>");
@@ -917,20 +989,23 @@ void cgit_print_snapshot_links(const char *repo, const char *head,
 			       const char *hex, int snapshots)
 {
 	const struct cgit_snapshot_format* f;
-	char *prefix;
-	char *filename;
+	struct strbuf filename = STRBUF_INIT;
+	size_t prefixlen;
 	unsigned char sha1[20];
 
 	if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 	    (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 		hex++;
-	prefix = xstrdup(fmt("%s-%s", cgit_repobasename(repo), hex));
+	strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
+	prefixlen = filename.len;
 	for (f = cgit_snapshot_formats; f->suffix; f++) {
 		if (!(snapshots & f->bit))
 			continue;
-		filename = fmt("%s%s", prefix, f->suffix);
-		cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
+		strbuf_setlen(&filename, prefixlen);
+		strbuf_addstr(&filename, f->suffix);
+		cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
+				   filename.buf);
 		html("<br/>");
 	}
-	free(prefix);
+	strbuf_release(&filename);
 }