Add struct cgit_page to cgit_context

This struct is used when generating http headers, and as such is another
small step towards the goal of the whole cleanup series; to invoke each
page/view function with a function pointer.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

8 files changed, 113 insertions, 88 deletions

diff --git a/cgit.c b/cgit.c
index e6b4526..d0f6905 100644
--- a/cgit.c
+++ b/cgit.c
@@ -1,316 +1,332 @@
 /* cgit.c: cgi for the git scm
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
+#include "cmd.h"
 
 static int cgit_prepare_cache(struct cacheitem *item)
 {
 	if (!ctx.repo && ctx.qry.repo) {
-		char *title = fmt("%s - %s", ctx.cfg.root_title, "Bad request");
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		ctx.page.title = fmt("%s - %s", ctx.cfg.root_title,
+				      "Bad request");
+		cgit_print_http_headers(&ctx);
+		cgit_print_docstart(&ctx);
+		cgit_print_pageheader(&ctx);
 		cgit_print_error(fmt("Unknown repo: %s", ctx.qry.repo));
 		cgit_print_docend();
 		return 0;
 	}
 
 	if (!ctx.repo) {
 		item->name = xstrdup(fmt("%s/index.html", ctx.cfg.cache_root));
 		item->ttl = ctx.cfg.cache_root_ttl;
 		return 1;
 	}
 
 	if (!cgit_cmd) {
 		item->name = xstrdup(fmt("%s/%s/index.%s.html", ctx.cfg.cache_root,
 					 cache_safe_filename(ctx.repo->url),
 					 cache_safe_filename(ctx.qry.raw)));
 		item->ttl = ctx.cfg.cache_repo_ttl;
 	} else {
 		item->name = xstrdup(fmt("%s/%s/%s/%s.html", ctx.cfg.cache_root,
 					 cache_safe_filename(ctx.repo->url),
 					 ctx.qry.page,
 					 cache_safe_filename(ctx.qry.raw)));
 		if (ctx.qry.has_symref)
 			item->ttl = ctx.cfg.cache_dynamic_ttl;
 		else if (ctx.qry.has_sha1)
 			item->ttl = ctx.cfg.cache_static_ttl;
 		else
 			item->ttl = ctx.cfg.cache_repo_ttl;
 	}
 	return 1;
 }
 
 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;
 
 	info.req_ref = repo->defbranch;
 	info.first_ref = NULL;
 	info.match = 0;
 	for_each_branch_ref(find_current_ref, &info);
 	if (info.match)
 		return info.req_ref;
 	else
 		return info.first_ref;
 }
 
 static void cgit_print_repo_page(struct cacheitem *item)
 {
-	char *title, *tmp;
+	char *tmp;
 	int show_search;
 	unsigned char sha1[20];
 	int nongit = 0;
 
 	setenv("GIT_DIR", ctx.repo->path, 1);
 	setup_git_directory_gently(&nongit);
 	if (nongit) {
-		title = fmt("%s - %s", ctx.cfg.root_title, "config error");
+		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_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		cgit_print_http_headers(&ctx);
+		cgit_print_docstart(&ctx);
+		cgit_print_pageheader(&ctx);
 		cgit_print_error(tmp);
 		cgit_print_docend();
 		return;
 	}
 
-	title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc);
+	ctx.page.title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc);
 	show_search = 0;
 
 	if (!ctx.qry.head) {
 		ctx.qry.head = xstrdup(find_default_branch(ctx.repo));
 		ctx.repo->defbranch = ctx.qry.head;
 	}
 
 	if (!ctx.qry.head) {
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		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;
 	}
 
 	if (get_sha1(ctx.qry.head, sha1)) {
 		tmp = xstrdup(ctx.qry.head);
 		ctx.qry.head = ctx.repo->defbranch;
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		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;
 	}
 
 	if ((cgit_cmd == CMD_SNAPSHOT) && ctx.repo->snapshots) {
 		cgit_print_snapshot(item, ctx.qry.head, ctx.qry.sha1,
 				    cgit_repobasename(ctx.repo->url),
 				    ctx.qry.path,
 				    ctx.repo->snapshots );
 		return;
 	}
 
 	if (cgit_cmd == CMD_PATCH) {
 		cgit_print_patch(ctx.qry.sha1, item);
 		return;
 	}
 
 	if (cgit_cmd == CMD_BLOB) {
 		cgit_print_blob(item, ctx.qry.sha1, ctx.qry.path);
 		return;
 	}
 
 	show_search = (cgit_cmd == CMD_LOG);
-	cgit_print_docstart(title, item);
+	cgit_print_http_headers(&ctx);
+	cgit_print_docstart(&ctx);
 	if (!cgit_cmd) {
-		cgit_print_pageheader("summary", show_search);
+		cgit_print_pageheader(&ctx);
 		cgit_print_summary();
 		cgit_print_docend();
 		return;
 	}
 
-	cgit_print_pageheader(ctx.qry.page, show_search);
+	cgit_print_pageheader(&ctx);
 
 	switch(cgit_cmd) {
 	case CMD_LOG:
 		cgit_print_log(ctx.qry.sha1, ctx.qry.ofs,
 			       ctx.cfg.max_commit_count, ctx.qry.grep, ctx.qry.search,
 			       ctx.qry.path, 1);
 		break;
 	case CMD_TREE:
 		cgit_print_tree(ctx.qry.sha1, ctx.qry.path);
 		break;
 	case CMD_COMMIT:
 		cgit_print_commit(ctx.qry.sha1);
 		break;
 	case CMD_REFS:
 		cgit_print_refs();
 		break;
 	case CMD_TAG:
 		cgit_print_tag(ctx.qry.sha1);
 		break;
 	case CMD_DIFF:
 		cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path);
 		break;
 	default:
 		cgit_print_error("Invalid request");
 	}
 	cgit_print_docend();
 }
 
+static long ttl_seconds(long ttl)
+{
+	if (ttl<0)
+		return 60 * 60 * 24 * 365;
+	else
+		return ttl * 60;
+}
+
 static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 {
 	int stdout2;
 
-	item->st.st_mtime = time(NULL);
-
 	if (use_cache) {
 		stdout2 = chk_positive(dup(STDOUT_FILENO),
 				       "Preserving STDOUT");
 		chk_zero(close(STDOUT_FILENO), "Closing STDOUT");
 		chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
 	}
 
+	ctx.page.modified = time(NULL);
+	ctx.page.expires = ctx.page.modified + ttl_seconds(item->ttl);
 	if (ctx.repo)
 		cgit_print_repo_page(item);
 	else
 		cgit_print_repolist(item);
 
 	if (use_cache) {
 		chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT");
 		chk_positive(dup2(stdout2, STDOUT_FILENO),
 			     "Restoring original STDOUT");
 		chk_zero(close(stdout2), "Closing temporary STDOUT");
 	}
 }
 
 static void cgit_check_cache(struct cacheitem *item)
 {
 	int i = 0;
 
  top:
 	if (++i > ctx.cfg.max_lock_attempts) {
 		die("cgit_refresh_cache: unable to lock %s: %s",
 		    item->name, strerror(errno));
 	}
 	if (!cache_exist(item)) {
 		if (!cache_lock(item)) {
 			sleep(1);
 			goto top;
 		}
 		if (!cache_exist(item)) {
 			cgit_fill_cache(item, 1);
 			cache_unlock(item);
 		} else {
 			cache_cancel_lock(item);
 		}
 	} else if (cache_expired(item) && cache_lock(item)) {
 		if (cache_expired(item)) {
 			cgit_fill_cache(item, 1);
 			cache_unlock(item);
 		} else {
 			cache_cancel_lock(item);
 		}
 	}
 }
 
 static void cgit_print_cache(struct cacheitem *item)
 {
 	static char buf[4096];
 	ssize_t i;
 
 	int fd = open(item->name, O_RDONLY);
 	if (fd<0)
 		die("Unable to open cached file %s", item->name);
 
 	while((i=read(fd, buf, sizeof(buf))) > 0)
 		write(STDOUT_FILENO, buf, i);
 
 	close(fd);
 }
 
 static void cgit_parse_args(int argc, const char **argv)
 {
 	int i;
 
 	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 (!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);
 		}
 	}
 }
 
 int main(int argc, const char **argv)
 {
 	struct cacheitem item;
 	const char *cgit_config_env = getenv("CGIT_CONFIG");
 
 	cgit_prepare_context(&ctx);
 	item.st.st_mtime = time(NULL);
 	cgit_repolist.length = 0;
 	cgit_repolist.count = 0;
 	cgit_repolist.repos = NULL;
 
 	cgit_read_config(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
 			 cgit_global_config_cb);
 	if (getenv("SCRIPT_NAME"))
 		ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME"));
 	if (getenv("QUERY_STRING"))
 		ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));
 	cgit_parse_args(argc, argv);
 	cgit_parse_query(ctx.qry.raw, cgit_querystring_cb);
 	if (!cgit_prepare_cache(&item))
 		return 0;
 	if (ctx.cfg.nocache) {
 		cgit_fill_cache(&item, 0);
 	} else {
 		cgit_check_cache(&item);
 		cgit_print_cache(&item);
 	}
 	return 0;
 }
diff --git a/cgit.h b/cgit.h
index 5b7ee1c..8ab8e07 100644
--- a/cgit.h
+++ b/cgit.h
@@ -1,291 +1,299 @@
 #ifndef CGIT_H
 #define CGIT_H
 
 
 #include <git-compat-util.h>
 #include <cache.h>
 #include <grep.h>
 #include <object.h>
 #include <tree.h>
 #include <commit.h>
 #include <tag.h>
 #include <diff.h>
 #include <diffcore.h>
 #include <refs.h>
 #include <revision.h>
 #include <log-tree.h>
 #include <archive.h>
 #include <xdiff/xdiff.h>
 #include <utf8.h>
 
 
 /*
  * The valid cgit repo-commands
  */
 #define CMD_LOG      1
 #define CMD_COMMIT   2
 #define CMD_DIFF     3
 #define CMD_TREE     4
 #define CMD_BLOB     5
 #define CMD_SNAPSHOT 6
 #define CMD_TAG      7
 #define CMD_REFS     8
 #define CMD_PATCH    9
 
 /*
  * Dateformats used on misc. pages
  */
 #define FMT_LONGDATE "%Y-%m-%d %H:%M:%S"
 #define FMT_SHORTDATE "%Y-%m-%d"
 
 
 /*
  * Limits used for relative dates
  */
 #define TM_MIN    60
 #define TM_HOUR  (TM_MIN * 60)
 #define TM_DAY   (TM_HOUR * 24)
 #define TM_WEEK  (TM_DAY * 7)
 #define TM_YEAR  (TM_DAY * 365)
 #define TM_MONTH (TM_YEAR / 12.0)
 
 
 /*
  * Default encoding
  */
 #define PAGE_ENCODING "UTF-8"
 
 typedef void (*configfn)(const char *name, const char *value);
 typedef void (*filepair_fn)(struct diff_filepair *pair);
 typedef void (*linediff_fn)(char *line, int len);
 
 struct cacheitem {
 	char *name;
 	struct stat st;
 	int ttl;
 	int fd;
 };
 
 struct cgit_repo {
 	char *url;
 	char *name;
 	char *path;
 	char *desc;
 	char *owner;
 	char *defbranch;
 	char *group;
 	char *module_link;
 	char *readme;
 	char *clone_url;
 	int snapshots;
 	int enable_log_filecount;
 	int enable_log_linecount;
 };
 
 struct cgit_repolist {
 	int length;
 	int count;
 	struct cgit_repo *repos;
 };
 
 struct commitinfo {
 	struct commit *commit;
 	char *author;
 	char *author_email;
 	unsigned long author_date;
 	char *committer;
 	char *committer_email;
 	unsigned long committer_date;
 	char *subject;
 	char *msg;
 	char *msg_encoding;
 };
 
 struct taginfo {
 	char *tagger;
 	char *tagger_email;
 	int tagger_date;
 	char *msg;
 };
 
 struct refinfo {
 	const char *refname;
 	struct object *object;
 	union {
 		struct taginfo *tag;
 		struct commitinfo *commit;
 	};
 };
 
 struct reflist {
 	struct refinfo **refs;
 	int alloc;
 	int count;
 };
 
 struct cgit_query {
 	int has_symref;
 	int has_sha1;
 	char *raw;
 	char *repo;
 	char *page;
 	char *search;
 	char *grep;
 	char *head;
 	char *sha1;
 	char *sha2;
 	char *path;
 	char *name;
 	int   ofs;
 };
 
 struct cgit_config {
 	char *agefile;
 	char *cache_root;
 	char *clone_prefix;
 	char *css;
 	char *index_header;
 	char *index_info;
 	char *logo;
 	char *logo_link;
 	char *module_link;
 	char *repo_group;
 	char *robots;
 	char *root_title;
 	char *script_name;
 	char *virtual_root;
 	int cache_dynamic_ttl;
 	int cache_max_create_time;
 	int cache_repo_ttl;
 	int cache_root_ttl;
 	int cache_static_ttl;
 	int enable_index_links;
 	int enable_log_filecount;
 	int enable_log_linecount;
 	int max_commit_count;
 	int max_lock_attempts;
 	int max_msg_len;
 	int max_repodesc_len;
 	int nocache;
 	int renamelimit;
 	int snapshots;
 	int summary_branches;
 	int summary_log;
 	int summary_tags;
 };
 
+struct cgit_page {
+	time_t modified;
+	time_t expires;
+	char *mimetype;
+	char *charset;
+	char *filename;
+	char *title;
+};
+
 struct cgit_context {
 	struct cgit_query qry;
 	struct cgit_config cfg;
 	struct cgit_repo *repo;
+	struct cgit_page page;
 };
 
 extern const char *cgit_version;
 
 extern struct cgit_repolist cgit_repolist;
 extern struct cgit_context ctx;
 extern int cgit_cmd;
 
 extern void cgit_prepare_context(struct cgit_context *ctx);
 extern int cgit_get_cmd_index(const char *cmd);
 extern struct cgit_repo *cgit_get_repoinfo(const char *url);
 extern void cgit_global_config_cb(const char *name, const char *value);
 extern void cgit_repo_config_cb(const char *name, const char *value);
 extern void cgit_querystring_cb(const char *name, const char *value);
 
 extern int chk_zero(int result, char *msg);
 extern int chk_positive(int result, char *msg);
 extern int chk_non_negative(int result, char *msg);
 
 extern int hextoint(char c);
 extern char *trim_end(const char *str, char c);
 extern char *strlpart(char *txt, int maxlen);
 extern char *strrpart(char *txt, int maxlen);
 
 extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
 extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
 			int flags, void *cb_data);
 
 extern void *cgit_free_commitinfo(struct commitinfo *info);
 
 extern int cgit_diff_files(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   linediff_fn fn);
 
 extern void cgit_diff_tree(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   filepair_fn fn, const char *prefix);
 
 extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);
 
 extern char *fmt(const char *format,...);
 
 extern int cgit_read_config(const char *filename, configfn fn);
 extern int cgit_parse_query(char *txt, configfn fn);
 extern struct commitinfo *cgit_parse_commit(struct commit *commit);
 extern struct taginfo *cgit_parse_tag(struct tag *tag);
 extern void cgit_parse_url(const char *url);
 
 extern char *cache_safe_filename(const char *unsafe);
 extern int cache_lock(struct cacheitem *item);
 extern int cache_unlock(struct cacheitem *item);
 extern int cache_cancel_lock(struct cacheitem *item);
 extern int cache_exist(struct cacheitem *item);
 extern int cache_expired(struct cacheitem *item);
 
 extern char *cgit_repourl(const char *reponame);
 extern char *cgit_fileurl(const char *reponame, const char *pagename,
 			  const char *filename, const char *query);
 extern char *cgit_pageurl(const char *reponame, const char *pagename,
 			  const char *query);
 
 extern const char *cgit_repobasename(const char *reponame);
 
 extern void cgit_tree_link(char *name, char *title, char *class, char *head,
 			   char *rev, char *path);
 extern void cgit_log_link(char *name, char *title, char *class, char *head,
 			  char *rev, char *path, int ofs, char *grep,
 			  char *pattern);
 extern void cgit_commit_link(char *name, char *title, char *class, char *head,
 			     char *rev);
 extern void cgit_refs_link(char *name, char *title, char *class, char *head,
 			   char *rev, char *path);
 extern void cgit_snapshot_link(char *name, char *title, char *class,
 			       char *head, char *rev, char *archivename);
 extern void cgit_diff_link(char *name, char *title, char *class, char *head,
 			   char *new_rev, char *old_rev, char *path);
 
 extern void cgit_object_link(struct object *obj);
 
 extern void cgit_print_error(char *msg);
 extern void cgit_print_date(time_t secs, char *format);
 extern void cgit_print_age(time_t t, time_t max_relative, char *format);
-extern void cgit_print_docstart(char *title, struct cacheitem *item);
+extern void cgit_print_http_headers(struct cgit_context *ctx);
+extern void cgit_print_docstart(struct cgit_context *ctx);
 extern void cgit_print_docend();
-extern void cgit_print_pageheader(char *title, int show_search);
-extern void cgit_print_snapshot_start(const char *mimetype,
-				      const char *filename,
-				      struct cacheitem *item);
+extern void cgit_print_pageheader(struct cgit_context *ctx);
 extern void cgit_print_filemode(unsigned short mode);
 extern void cgit_print_branches(int maxcount);
 extern void cgit_print_tags(int maxcount);
 
 extern void cgit_print_repolist(struct cacheitem *item);
 extern void cgit_print_summary();
 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep,
 			   char *pattern, char *path, int pager);
 extern void cgit_print_blob(struct cacheitem *item, const char *hex, char *path);
 extern void cgit_print_tree(const char *rev, char *path);
 extern void cgit_print_commit(char *hex);
 extern void cgit_print_refs();
 extern void cgit_print_tag(char *revname);
 extern void cgit_print_diff(const char *new_hex, const char *old_hex, const char *prefix);
 extern void cgit_print_patch(char *hex, struct cacheitem *item);
 extern void cgit_print_snapshot(struct cacheitem *item, const char *head,
 				const char *hex, const char *prefix,
 				const char *filename, int snapshot);
 extern void cgit_print_snapshot_links(const char *repo, const char *head,
 				      const char *hex, int snapshots);
 extern int cgit_parse_snapshots_mask(const char *str);
 
 #endif /* CGIT_H */
diff --git a/shared.c b/shared.c
index 76e10d0..539d533 100644
--- a/shared.c
+++ b/shared.c
@@ -1,491 +1,494 @@
 /* shared.c: global vars + some callback functions
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 struct cgit_repolist cgit_repolist;
 struct cgit_context ctx;
 int cgit_cmd;
 
 const char *cgit_version = CGIT_VERSION;
 
 void cgit_prepare_context(struct cgit_context *ctx)
 {
 	memset(ctx, 0, sizeof(ctx));
 	ctx->cfg.agefile = "info/web/last-modified";
 	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_static_ttl = -1;
 	ctx->cfg.css = "/cgit.css";
 	ctx->cfg.logo = "/git-logo.png";
 	ctx->cfg.max_commit_count = 50;
 	ctx->cfg.max_lock_attempts = 5;
 	ctx->cfg.max_msg_len = 60;
 	ctx->cfg.max_repodesc_len = 60;
 	ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
 	ctx->cfg.renamelimit = -1;
 	ctx->cfg.robots = "index, nofollow";
 	ctx->cfg.root_title = "Git repository browser";
 	ctx->cfg.script_name = CGIT_SCRIPT_NAME;
+	ctx->page.mimetype = "text/html";
+	ctx->page.charset = PAGE_ENCODING;
+	ctx->page.filename = NULL;
 }
 
 int cgit_get_cmd_index(const char *cmd)
 {
 	static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
 			       "snapshot", "tag", "refs", "patch", NULL};
 	int i;
 
 	for(i = 0; cmds[i]; i++)
 		if (!strcmp(cmd, cmds[i]))
 			return i + 1;
 	return 0;
 }
 
 int chk_zero(int result, char *msg)
 {
 	if (result != 0)
 		die("%s: %s", msg, strerror(errno));
 	return result;
 }
 
 int chk_positive(int result, char *msg)
 {
 	if (result <= 0)
 		die("%s: %s", msg, strerror(errno));
 	return result;
 }
 
 int chk_non_negative(int result, char *msg)
 {
     	if (result < 0)
 	    	die("%s: %s",msg, strerror(errno));
 	return result;
 }
 
 struct cgit_repo *add_repo(const char *url)
 {
 	struct cgit_repo *ret;
 
 	if (++cgit_repolist.count > cgit_repolist.length) {
 		if (cgit_repolist.length == 0)
 			cgit_repolist.length = 8;
 		else
 			cgit_repolist.length *= 2;
 		cgit_repolist.repos = xrealloc(cgit_repolist.repos,
 					       cgit_repolist.length *
 					       sizeof(struct cgit_repo));
 	}
 
 	ret = &cgit_repolist.repos[cgit_repolist.count-1];
 	ret->url = trim_end(url, '/');
 	ret->name = ret->url;
 	ret->path = NULL;
 	ret->desc = "[no description]";
 	ret->owner = NULL;
 	ret->group = ctx.cfg.repo_group;
 	ret->defbranch = "master";
 	ret->snapshots = ctx.cfg.snapshots;
 	ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
 	ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
 	ret->module_link = ctx.cfg.module_link;
 	ret->readme = NULL;
 	return ret;
 }
 
 struct cgit_repo *cgit_get_repoinfo(const char *url)
 {
 	int i;
 	struct cgit_repo *repo;
 
 	for (i=0; i<cgit_repolist.count; i++) {
 		repo = &cgit_repolist.repos[i];
 		if (!strcmp(repo->url, url))
 			return repo;
 	}
 	return NULL;
 }
 
 void cgit_global_config_cb(const char *name, const char *value)
 {
 	if (!strcmp(name, "root-title"))
 		ctx.cfg.root_title = xstrdup(value);
 	else if (!strcmp(name, "css"))
 		ctx.cfg.css = 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, "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, "snapshots"))
 		ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
 	else if (!strcmp(name, "enable-index-links"))
 		ctx.cfg.enable_index_links = 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, "cache-root"))
 		ctx.cfg.cache_root = xstrdup(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-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, "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-commit-count"))
 		ctx.cfg.max_commit_count = atoi(value);
 	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, "agefile"))
 		ctx.cfg.agefile = xstrdup(value);
 	else if (!strcmp(name, "renamelimit"))
 		ctx.cfg.renamelimit = 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, "repo.group"))
 		ctx.cfg.repo_group = xstrdup(value);
 	else if (!strcmp(name, "repo.url"))
 		ctx.repo = add_repo(value);
 	else if (!strcmp(name, "repo.name"))
 		ctx.repo->name = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.path"))
 		ctx.repo->path = trim_end(value, '/');
 	else if (ctx.repo && !strcmp(name, "repo.clone-url"))
 		ctx.repo->clone_url = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.desc"))
 		ctx.repo->desc = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.owner"))
 		ctx.repo->owner = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.defbranch"))
 		ctx.repo->defbranch = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.snapshots"))
 		ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
 	else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
 		ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
 	else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
 		ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
 	else if (ctx.repo && !strcmp(name, "repo.module-link"))
 		ctx.repo->module_link= xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
 		if (*value == '/')
 			ctx.repo->readme = xstrdup(value);
 		else
 			ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
 	} else if (!strcmp(name, "include"))
 		cgit_read_config(value, cgit_global_config_cb);
 }
 
 void cgit_querystring_cb(const char *name, const char *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);
 		cgit_cmd = cgit_get_cmd_index(value);
 	} else if (!strcmp(name, "url")) {
 		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);
 	}
 }
 
 void *cgit_free_commitinfo(struct commitinfo *info)
 {
 	free(info->author);
 	free(info->author_email);
 	free(info->committer);
 	free(info->committer_email);
 	free(info->subject);
 	free(info->msg);
 	free(info->msg_encoding);
 	free(info);
 	return NULL;
 }
 
 int hextoint(char c)
 {
 	if (c >= 'a' && c <= 'f')
 		return 10 + c - 'a';
 	else if (c >= 'A' && c <= 'F')
 		return 10 + c - 'A';
 	else if (c >= '0' && c <= '9')
 		return c - '0';
 	else
 		return -1;
 }
 
 char *trim_end(const char *str, char c)
 {
 	int len;
 	char *s, *t;
 
 	if (str == NULL)
 		return NULL;
 	t = (char *)str;
 	len = strlen(t);
 	while(len > 0 && t[len - 1] == c)
 		len--;
 
 	if (len == 0)
 		return NULL;
 
 	c = t[len];
 	t[len] = '\0';
 	s = xstrdup(t);
 	t[len] = c;
 	return s;
 }
 
 char *strlpart(char *txt, int maxlen)
 {
 	char *result;
 
 	if (!txt)
 		return txt;
 
 	if (strlen(txt) <= maxlen)
 		return txt;
 	result = xmalloc(maxlen + 1);
 	memcpy(result, txt, maxlen - 3);
 	result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
 	result[maxlen] = '\0';
 	return result;
 }
 
 char *strrpart(char *txt, int maxlen)
 {
 	char *result;
 
 	if (!txt)
 		return txt;
 
 	if (strlen(txt) <= maxlen)
 		return txt;
 	result = xmalloc(maxlen + 1);
 	memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
 	result[0] = result[1] = result[2] = '.';
 	return result;
 }
 
 void cgit_add_ref(struct reflist *list, struct refinfo *ref)
 {
 	size_t size;
 
 	if (list->count >= list->alloc) {
 		list->alloc += (list->alloc ? list->alloc : 4);
 		size = list->alloc * sizeof(struct refinfo *);
 		list->refs = xrealloc(list->refs, size);
 	}
 	list->refs[list->count++] = ref;
 }
 
 struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
 {
 	struct refinfo *ref;
 
 	ref = xmalloc(sizeof (struct refinfo));
 	ref->refname = xstrdup(refname);
 	ref->object = parse_object(sha1);
 	switch (ref->object->type) {
 	case OBJ_TAG:
 		ref->tag = cgit_parse_tag((struct tag *)ref->object);
 		break;
 	case OBJ_COMMIT:
 		ref->commit = cgit_parse_commit((struct commit *)ref->object);
 		break;
 	}
 	return ref;
 }
 
 int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
 		  void *cb_data)
 {
 	struct reflist *list = (struct reflist *)cb_data;
 	struct refinfo *info = cgit_mk_refinfo(refname, sha1);
 
 	if (info)
 		cgit_add_ref(list, info);
 	return 0;
 }
 
 void cgit_diff_tree_cb(struct diff_queue_struct *q,
 		       struct diff_options *options, void *data)
 {
 	int i;
 
 	for (i = 0; i < q->nr; i++) {
 		if (q->queue[i]->status == 'U')
 			continue;
 		((filepair_fn)data)(q->queue[i]);
 	}
 }
 
 static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
 {
 	enum object_type type;
 
 	if (is_null_sha1(sha1)) {
 		file->ptr = (char *)"";
 		file->size = 0;
 	} else {
 		file->ptr = read_sha1_file(sha1, &type, 
 		                           (unsigned long *)&file->size);
 	}
 	return 1;
 }
 
 /*
  * Receive diff-buffers from xdiff and concatenate them as
  * needed across multiple callbacks.
  *
  * This is basically a copy of xdiff-interface.c/xdiff_outf(),
  * ripped from git and modified to use globals instead of
  * a special callback-struct.
  */
 char *diffbuf = NULL;
 int buflen = 0;
 
 int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 {
 	int i;
 
 	for (i = 0; i < nbuf; i++) {
 		if (mb[i].ptr[mb[i].size-1] != '\n') {
 			/* Incomplete line */
 			diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 			memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 			buflen += mb[i].size;
 			continue;
 		}
 
 		/* we have a complete line */
 		if (!diffbuf) {
 			((linediff_fn)priv)(mb[i].ptr, mb[i].size);
 			continue;
 		}
 		diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
 		memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
 		((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
 		free(diffbuf);
 		diffbuf = NULL;
 		buflen = 0;
 	}
 	if (diffbuf) {
 		((linediff_fn)priv)(diffbuf, buflen);
 		free(diffbuf);
 		diffbuf = NULL;
 		buflen = 0;
 	}
 	return 0;
 }
 
 int cgit_diff_files(const unsigned char *old_sha1,
 		     const unsigned char *new_sha1,
 		     linediff_fn fn)
 {
 	mmfile_t file1, file2;
 	xpparam_t diff_params;
 	xdemitconf_t emit_params;
 	xdemitcb_t emit_cb;
 
 	if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
 		return 1;
 
 	diff_params.flags = XDF_NEED_MINIMAL;
 	emit_params.ctxlen = 3;
 	emit_params.flags = XDL_EMIT_FUNCNAMES;
 	emit_params.find_func = NULL;
 	emit_cb.outf = filediff_cb;
 	emit_cb.priv = fn;
 	xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
 	return 0;
 }
 
 void cgit_diff_tree(const unsigned char *old_sha1,
 		    const unsigned char *new_sha1,
 		    filepair_fn fn, const char *prefix)
 {
 	struct diff_options opt;
 	int ret;
 	int prefixlen;
 
 	diff_setup(&opt);
 	opt.output_format = DIFF_FORMAT_CALLBACK;
 	opt.detect_rename = 1;
 	opt.rename_limit = ctx.cfg.renamelimit;
 	DIFF_OPT_SET(&opt, RECURSIVE);
 	opt.format_callback = cgit_diff_tree_cb;
 	opt.format_callback_data = fn;
 	if (prefix) {
 		opt.nr_paths = 1;
 		opt.paths = &prefix;
 		prefixlen = strlen(prefix);
 		opt.pathlens = &prefixlen;
 	}
 	diff_setup_done(&opt);
 
 	if (old_sha1 && !is_null_sha1(old_sha1))
 		ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
 	else
 		ret = diff_root_tree_sha1(new_sha1, "", &opt);
 	diffcore_std(&opt);
 	diff_flush(&opt);
 }
 
 void cgit_diff_commit(struct commit *commit, filepair_fn fn)
 {
 	unsigned char *old_sha1 = NULL;
 
 	if (commit->parents)
 		old_sha1 = commit->parents->item->object.sha1;
 	cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
 }
diff --git a/ui-blob.c b/ui-blob.c
index be4fb88..bd44574 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -1,40 +1,42 @@
 /* ui-blob.c: show blob content
  *
  * Copyright (C) 2008 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 
 void cgit_print_blob(struct cacheitem *item, const char *hex, char *path)
 {
 
 	unsigned char sha1[20];
 	enum object_type type;
 	unsigned char *buf;
 	unsigned long size;
 
 	if (get_sha1_hex(hex, sha1)){
 		cgit_print_error(fmt("Bad hex value: %s", hex));
 	        return;
 	}
 
 	type = sha1_object_info(sha1, &size);
 	if (type == OBJ_BAD) {
 		cgit_print_error(fmt("Bad object name: %s", hex));
 		return;
 	}
 
 	buf = read_sha1_file(sha1, &type, &size);
 	if (!buf) {
 		cgit_print_error(fmt("Error reading object %s", hex));
 		return;
 	}
 
 	buf[size] = '\0';
-	cgit_print_snapshot_start("text/plain", path, item);
+	ctx.page.mimetype = "text/plain";
+	ctx.page.filename = path;
+	cgit_print_http_headers(&ctx);
 	write(htmlfd, buf, size);
 }
diff --git a/ui-patch.c b/ui-patch.c
index d93426b..a77f3f6 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -1,111 +1,113 @@
 /* ui-patch.c: generate patch view
  *
  * Copyright (C) 2007 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 
 static void print_line(char *line, int len)
 {
 	char c = line[len-1];
 
 	line[len-1] = '\0';
 	htmlf("%s\n", line);
 	line[len-1] = c;
 }
 
 static void header(unsigned char *sha1, char *path1, int mode1,
 		   unsigned char *sha2, char *path2, int mode2)
 {
 	char *abbrev1, *abbrev2;
 	int subproject;
 
 	subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));
 	htmlf("diff --git a/%s b/%s\n", path1, path2);
 
 	if (is_null_sha1(sha1))
 		path1 = "dev/null";
 	if (is_null_sha1(sha2))
 		path2 = "dev/null";
 
 	if (mode1 == 0)
 		htmlf("new file mode %.6o\n", mode2);
 
 	if (mode2 == 0)
 		htmlf("deleted file mode %.6o\n", mode1);
 
 	if (!subproject) {
 		abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
 		abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
 		htmlf("index %s..%s", abbrev1, abbrev2);
 		free(abbrev1);
 		free(abbrev2);
 		if (mode1 != 0 && mode2 != 0) {
 			htmlf(" %.6o", mode1);
 			if (mode2 != mode1)
 				htmlf("..%.6o", mode2);
 		}
 		htmlf("\n--- a/%s\n", path1);
 		htmlf("+++ b/%s\n", path2);
 	}
 }
 
 static void filepair_cb(struct diff_filepair *pair)
 {
 	header(pair->one->sha1, pair->one->path, pair->one->mode,
 	       pair->two->sha1, pair->two->path, pair->two->mode);
 	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
 		if (S_ISGITLINK(pair->one->mode))
 			print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
 		if (S_ISGITLINK(pair->two->mode))
 			print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
 		return;
 	}
 	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))
 		html("Error running diff");
 }
 
 void cgit_print_patch(char *hex, struct cacheitem *item)
 {
 	struct commit *commit;
 	struct commitinfo *info;
 	unsigned char sha1[20], old_sha1[20];
 	char *patchname;
 
 	if (!hex)
 		hex = ctx.qry.head;
 
 	if (get_sha1(hex, sha1)) {
 		cgit_print_error(fmt("Bad object id: %s", hex));
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit) {
 		cgit_print_error(fmt("Bad commit reference: %s", hex));
 		return;
 	}
 	info = cgit_parse_commit(commit);
 	hashcpy(old_sha1, commit->parents->item->object.sha1);
 
 	patchname = fmt("%s.patch", sha1_to_hex(sha1));
-	cgit_print_snapshot_start("text/plain", patchname, item);
+	ctx.page.mimetype = "text/plain";
+	ctx.page.filename = patchname;
+	cgit_print_http_headers(&ctx);
 	htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
 	htmlf("From: %s%s\n", info->author, info->author_email);
 	html("Date: ");
 	cgit_print_date(info->author_date, "%a, %d  %b  %Y  %H:%M:%S  %z%n");
 	htmlf("Subject: %s\n\n", info->subject);
 	if (info->msg && *info->msg) {
 		htmlf("%s", info->msg);
 		if (info->msg[strlen(info->msg) - 1] != '\n')
 			html("\n");
 	}
 	html("---\n");
 	cgit_diff_tree(old_sha1, sha1, filepair_cb, NULL);
 	html("--\n");
 	htmlf("cgit %s\n", CGIT_VERSION);
 	cgit_free_commitinfo(info);
 }
diff --git a/ui-repolist.c b/ui-repolist.c
index cd4e41d..e663585 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -1,111 +1,113 @@
 /* ui-repolist.c: functions for generating the repolist page
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include <time.h>
 
 #include "cgit.h"
 #include "html.h"
 
 time_t read_agefile(char *path)
 {
 	FILE *f;
 	static char buf[64], buf2[64];
 
 	if (!(f = fopen(path, "r")))
 		return -1;
 	fgets(buf, sizeof(buf), f);
 	fclose(f);
 	if (parse_date(buf, buf2, sizeof(buf2)))
 		return strtoul(buf2, NULL, 10);
 	else
 		return 0;
 }
 
 static void print_modtime(struct cgit_repo *repo)
 {
 	char *path;
 	struct stat s;
 
 	path = fmt("%s/%s", repo->path, ctx.cfg.agefile);
 	if (stat(path, &s) == 0) {
 		cgit_print_age(read_agefile(path), -1, NULL);
 		return;
 	}
 
 	path = fmt("%s/refs/heads/%s", repo->path, repo->defbranch);
 	if (stat(path, &s) != 0)
 		return;
 	cgit_print_age(s.st_mtime, -1, NULL);
 }
 
 void cgit_print_repolist(struct cacheitem *item)
 {
 	int i, columns = 4;
 	char *last_group = NULL;
 
 	if (ctx.cfg.enable_index_links)
 		columns++;
 
-	cgit_print_docstart(ctx.cfg.root_title, item);
-	cgit_print_pageheader(ctx.cfg.root_title, 0);
+	ctx.page.title = ctx.cfg.root_title;
+	cgit_print_http_headers(&ctx);
+	cgit_print_docstart(&ctx);
+	cgit_print_pageheader(&ctx);
 
 	html("<table summary='repository list' class='list nowrap'>");
 	if (ctx.cfg.index_header) {
 		htmlf("<tr class='nohover'><td colspan='%d' class='include-block'>",
 		      columns);
 		html_include(ctx.cfg.index_header);
 		html("</td></tr>");
 	}
 	html("<tr class='nohover'>"
 	     "<th class='left'>Name</th>"
 	     "<th class='left'>Description</th>"
 	     "<th class='left'>Owner</th>"
 	     "<th class='left'>Idle</th>");
 	if (ctx.cfg.enable_index_links)
 		html("<th>Links</th>");
 	html("</tr>\n");
 
 	for (i=0; i<cgit_repolist.count; i++) {
 		ctx.repo = &cgit_repolist.repos[i];
 		if ((last_group == NULL && ctx.repo->group != NULL) ||
 		    (last_group != NULL && ctx.repo->group == NULL) ||
 		    (last_group != NULL && ctx.repo->group != NULL &&
 		     strcmp(ctx.repo->group, last_group))) {
 			htmlf("<tr class='nohover'><td colspan='%d' class='repogroup'>",
 			      columns);
 			html_txt(ctx.repo->group);
 			html("</td></tr>");
 			last_group = ctx.repo->group;
 		}
 		htmlf("<tr><td class='%s'>",
 		      ctx.repo->group ? "sublevel-repo" : "toplevel-repo");
 		html_link_open(cgit_repourl(ctx.repo->url), NULL, NULL);
 		html_txt(ctx.repo->name);
 		html_link_close();
 		html("</td><td>");
 		html_ntxt(ctx.cfg.max_repodesc_len, ctx.repo->desc);
 		html("</td><td>");
 		html_txt(ctx.repo->owner);
 		html("</td><td>");
 		print_modtime(ctx.repo);
 		html("</td>");
 		if (ctx.cfg.enable_index_links) {
 			html("<td>");
 			html_link_open(cgit_repourl(ctx.repo->url),
 				       NULL, "button");
 			html("summary</a>");
 			cgit_log_link("log", NULL, "button", NULL, NULL, NULL,
 				      0, NULL, NULL);
 			cgit_tree_link("tree", NULL, "button", NULL, NULL, NULL);
 			html("</td>");
 		}
 		html("</tr>\n");
 	}
 	html("</table>");
 	cgit_print_docend();
 }
diff --git a/ui-shared.c b/ui-shared.c
index 2eff79d..2596023 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -1,586 +1,576 @@
 /* ui-shared.c: common web output functions
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 
 const char cgit_doctype[] =
 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
 
 static char *http_date(time_t t)
 {
 	static char day[][4] =
 		{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
 	static char month[][4] =
 		{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
 		 "Jul", "Aug", "Sep", "Oct", "Now", "Dec"};
 	struct tm *tm = gmtime(&t);
 	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
 		   tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
 		   tm->tm_hour, tm->tm_min, tm->tm_sec);
 }
 
-static long ttl_seconds(long ttl)
-{
-	if (ttl<0)
-		return 60 * 60 * 24 * 365;
-	else
-		return ttl * 60;
-}
-
 void cgit_print_error(char *msg)
 {
 	html("<div class='error'>");
 	html_txt(msg);
 	html("</div>\n");
 }
 
 char *cgit_rooturl()
 {
 	if (ctx.cfg.virtual_root)
 		return fmt("%s/", ctx.cfg.virtual_root);
 	else
 		return ctx.cfg.script_name;
 }
 
 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);
 	}
 }
 
 char *cgit_fileurl(const char *reponame, const char *pagename,
 		   const char *filename, const char *query)
 {
 	char *tmp;
 	char *delim;
 
 	if (ctx.cfg.virtual_root) {
 		tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
 			  pagename, (filename ? filename:""));
 		delim = "?";
 	} else {
 		tmp = fmt("?url=%s/%s/%s", reponame, pagename,
 			  (filename ? filename : ""));
 		delim = "&";
 	}
 	if (query)
 		tmp = fmt("%s%s%s", tmp, delim, query);
 	return tmp;
 }
 
 char *cgit_pageurl(const char *reponame, const char *pagename,
 		   const char *query)
 {
 	return cgit_fileurl(reponame,pagename,0,query);
 }
 
 const char *cgit_repobasename(const char *reponame)
 {
 	/* I assume we don't need to store more than one repo basename */
 	static char rvbuf[1024];
 	int p;
 	const char *rv;
 	strncpy(rvbuf,reponame,sizeof(rvbuf));
 	if(rvbuf[sizeof(rvbuf)-1])
 		die("cgit_repobasename: truncated repository name '%s'", reponame);
 	p = strlen(rvbuf)-1;
 	/* strip trailing slashes */
 	while(p && rvbuf[p]=='/') rvbuf[p--]=0;
 	/* strip trailing .git */
 	if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
 		p -= 3; rvbuf[p--] = 0;
 	}
 	/* strip more trailing slashes if any */
 	while( p && rvbuf[p]=='/') rvbuf[p--]=0;
 	/* find last slash in the remaining string */
 	rv = strrchr(rvbuf,'/');
 	if(rv)
 		return ++rv;
 	return rvbuf;
 }
 
 char *cgit_currurl()
 {
 	if (!ctx.cfg.virtual_root)
 		return ctx.cfg.script_name;
 	else if (ctx.qry.page)
 		return fmt("%s/%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo, ctx.qry.page);
 	else if (ctx.qry.repo)
 		return fmt("%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo);
 	else
 		return fmt("%s/", ctx.cfg.virtual_root);
 }
 
 static char *repolink(char *title, char *class, char *page, char *head,
 		      char *path)
 {
 	char *delim = "?";
 
 	html("<a");
 	if (title) {
 		html(" title='");
 		html_attr(title);
 		html("'");
 	}
 	if (class) {
 		html(" class='");
 		html_attr(class);
 		html("'");
 	}
 	html(" href='");
 	if (ctx.cfg.virtual_root) {
 		html_attr(ctx.cfg.virtual_root);
 		if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 			html("/");
 		html_attr(ctx.repo->url);
 		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 			html("/");
 		if (page) {
 			html(page);
 			html("/");
 			if (path)
 				html_attr(path);
 		}
 	} else {
 		html(ctx.cfg.script_name);
 		html("?url=");
 		html_attr(ctx.repo->url);
 		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 			html("/");
 		if (page) {
 			html(page);
 			html("/");
 			if (path)
 				html_attr(path);
 		}
 		delim = "&amp;";
 	}
 	if (head && strcmp(head, ctx.repo->defbranch)) {
 		html(delim);
 		html("h=");
 		html_attr(head);
 		delim = "&amp;";
 	}
 	return fmt("%s", delim);
 }
 
 static void reporevlink(char *page, char *name, char *title, char *class,
 			char *head, char *rev, char *path)
 {
 	char *delim;
 
 	delim = repolink(title, class, page, head, path);
 	if (rev && strcmp(rev, ctx.qry.head)) {
 		html(delim);
 		html("id=");
 		html_attr(rev);
 	}
 	html("'>");
 	html_txt(name);
 	html("</a>");
 }
 
 void cgit_tree_link(char *name, char *title, char *class, char *head,
 		    char *rev, char *path)
 {
 	reporevlink("tree", name, title, class, head, rev, path);
 }
 
 void cgit_log_link(char *name, char *title, char *class, char *head,
 		   char *rev, char *path, int ofs, char *grep, char *pattern)
 {
 	char *delim;
 
 	delim = repolink(title, class, "log", head, path);
 	if (rev && strcmp(rev, ctx.qry.head)) {
 		html(delim);
 		html("id=");
 		html_attr(rev);
 		delim = "&";
 	}
 	if (grep && pattern) {
 		html(delim);
 		html("qt=");
 		html_attr(grep);
 		delim = "&";
 		html(delim);
 		html("q=");
 		html_attr(pattern);
 	}
 	if (ofs > 0) {
 		html(delim);
 		html("ofs=");
 		htmlf("%d", ofs);
 	}
 	html("'>");
 	html_txt(name);
 	html("</a>");
 }
 
 void cgit_commit_link(char *name, char *title, char *class, char *head,
 		      char *rev)
 {
 	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 		name[ctx.cfg.max_msg_len] = '\0';
 		name[ctx.cfg.max_msg_len - 1] = '.';
 		name[ctx.cfg.max_msg_len - 2] = '.';
 		name[ctx.cfg.max_msg_len - 3] = '.';
 	}
 	reporevlink("commit", name, title, class, head, rev, NULL);
 }
 
 void cgit_refs_link(char *name, char *title, char *class, char *head,
 		    char *rev, char *path)
 {
 	reporevlink("refs", name, title, class, head, rev, path);
 }
 
 void cgit_snapshot_link(char *name, char *title, char *class, char *head,
 			char *rev, char *archivename)
 {
 	reporevlink("snapshot", name, title, class, head, rev, archivename);
 }
 
 void cgit_diff_link(char *name, char *title, char *class, char *head,
 		    char *new_rev, char *old_rev, char *path)
 {
 	char *delim;
 
 	delim = repolink(title, class, "diff", head, path);
 	if (new_rev && strcmp(new_rev, ctx.qry.head)) {
 		html(delim);
 		html("id=");
 		html_attr(new_rev);
 		delim = "&amp;";
 	}
 	if (old_rev) {
 		html(delim);
 		html("id2=");
 		html_attr(old_rev);
 	}
 	html("'>");
 	html_txt(name);
 	html("</a>");
 }
 
 void cgit_patch_link(char *name, char *title, char *class, char *head,
 		     char *rev)
 {
 	reporevlink("patch", name, title, class, head, rev, NULL);
 }
 
 void cgit_object_link(struct object *obj)
 {
 	char *page, *arg, *url;
 
 	if (obj->type == OBJ_COMMIT) {
                 cgit_commit_link(fmt("commit %s", sha1_to_hex(obj->sha1)), NULL, NULL,
 				 ctx.qry.head, sha1_to_hex(obj->sha1));
 		return;
 	} else if (obj->type == OBJ_TREE) {
 		page = "tree";
 		arg = "id";
 	} else if (obj->type == OBJ_TAG) {
 		page = "tag";
 		arg = "id";
 	} else {
 		page = "blob";
 		arg = "id";
 	}
 
 	url = cgit_pageurl(ctx.qry.repo, page,
 			   fmt("%s=%s", arg, sha1_to_hex(obj->sha1)));
 	html_link_open(url, NULL, NULL);
 	htmlf("%s %s", typename(obj->type),
 	      sha1_to_hex(obj->sha1));
 	html_link_close();
 }
 
 void cgit_print_date(time_t secs, char *format)
 {
 	char buf[64];
 	struct tm *time;
 
 	if (!secs)
 		return;
 	time = gmtime(&secs);
 	strftime(buf, sizeof(buf)-1, format, time);
 	html_txt(buf);
 }
 
 void cgit_print_age(time_t t, time_t max_relative, char *format)
 {
 	time_t now, secs;
 
 	if (!t)
 		return;
 	time(&now);
 	secs = now - t;
 
 	if (secs > max_relative && max_relative >= 0) {
 		cgit_print_date(t, format);
 		return;
 	}
 
 	if (secs < TM_HOUR * 2) {
 		htmlf("<span class='age-mins'>%.0f min.</span>",
 		      secs * 1.0 / TM_MIN);
 		return;
 	}
 	if (secs < TM_DAY * 2) {
 		htmlf("<span class='age-hours'>%.0f hours</span>",
 		      secs * 1.0 / TM_HOUR);
 		return;
 	}
 	if (secs < TM_WEEK * 2) {
 		htmlf("<span class='age-days'>%.0f days</span>",
 		      secs * 1.0 / TM_DAY);
 		return;
 	}
 	if (secs < TM_MONTH * 2) {
 		htmlf("<span class='age-weeks'>%.0f weeks</span>",
 		      secs * 1.0 / TM_WEEK);
 		return;
 	}
 	if (secs < TM_YEAR * 2) {
 		htmlf("<span class='age-months'>%.0f months</span>",
 		      secs * 1.0 / TM_MONTH);
 		return;
 	}
 	htmlf("<span class='age-years'>%.0f years</span>",
 	      secs * 1.0 / TM_YEAR);
 }
 
-void cgit_print_docstart(char *title, struct cacheitem *item)
+void cgit_print_http_headers(struct cgit_context *ctx)
 {
-	html("Content-Type: text/html; charset=" PAGE_ENCODING "\n");
-	htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
-	htmlf("Expires: %s\n", http_date(item->st.st_mtime +
-					 ttl_seconds(item->ttl)));
+	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.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));
 	html("\n");
+}
+
+void cgit_print_docstart(struct cgit_context *ctx)
+{
 	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(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");
 	html("</head>\n");
 	html("<body>\n");
 }
 
 void cgit_print_docend()
 {
 	html("</td>\n</tr>\n</table>\n</body>\n</html>\n");
 }
 
 int print_branch_option(const char *refname, const unsigned char *sha1,
 			int flags, void *cb_data)
 {
 	char *name = (char *)refname;
 	html_option(name, name, ctx.qry.head);
 	return 0;
 }
 
 int print_archive_ref(const char *refname, const unsigned char *sha1,
 		       int flags, void *cb_data)
 {
 	struct tag *tag;
 	struct taginfo *info;
 	struct object *obj;
 	char buf[256], *url;
 	unsigned char fileid[20];
 	int *header = (int *)cb_data;
 
 	if (prefixcmp(refname, "refs/archives"))
 		return 0;
 	strncpy(buf, refname+14, sizeof(buf));
 	obj = parse_object(sha1);
 	if (!obj)
 		return 1;
 	if (obj->type == OBJ_TAG) {
 		tag = lookup_tag(sha1);
 		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 			return 0;
 		hashcpy(fileid, tag->tagged->sha1);
 	} else if (obj->type != OBJ_BLOB) {
 		return 0;
 	} else {
 		hashcpy(fileid, sha1);
 	}
 	if (!*header) {
 		html("<h1>download</h1>\n");
 		*header = 1;
 	}
 	url = cgit_pageurl(ctx.qry.repo, "blob",
 			   fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
 			       buf));
 	html_link_open(url, NULL, "menu");
 	html_txt(strlpart(buf, 20));
 	html_link_close();
 	return 0;
 }
 
 void add_hidden_formfields(int incl_head, int incl_search, char *page)
 {
 	char *url;
 
 	if (!ctx.cfg.virtual_root) {
 		url = fmt("%s/%s", ctx.qry.repo, page);
 		if (ctx.qry.path)
 			url = fmt("%s/%s", url, ctx.qry.path);
 		html_hidden("url", url);
 	}
 
 	if (incl_head && strcmp(ctx.qry.head, ctx.repo->defbranch))
 		html_hidden("h", ctx.qry.head);
 
 	if (ctx.qry.sha1)
 		html_hidden("id", ctx.qry.sha1);
 	if (ctx.qry.sha2)
 		html_hidden("id2", ctx.qry.sha2);
 
 	if (incl_search) {
 		if (ctx.qry.grep)
 			html_hidden("qt", ctx.qry.grep);
 		if (ctx.qry.search)
 			html_hidden("q", ctx.qry.search);
 	}
 }
 
-void cgit_print_pageheader(char *title, int show_search)
+void cgit_print_pageheader(struct cgit_context *ctx)
 {
 	static const char *default_info = "This is cgit, a fast webinterface for git repositories";
 	int header = 0;
 	char *url;
 
 	html("<table id='layout' summary=''>\n");
 	html("<tr><td id='sidebar'>\n");
 	html("<table class='sidebar' cellspacing='0' summary=''>\n");
 	html("<tr><td class='sidebar'>\n<a href='");
 	html_attr(cgit_rooturl());
 	htmlf("'><img src='%s' alt='cgit'/></a>\n",
-	      ctx.cfg.logo);
+	      ctx->cfg.logo);
 	html("</td></tr>\n<tr><td class='sidebar'>\n");
-	if (ctx.repo) {
+	if (ctx->repo) {
 		html("<h1 class='first'>");
-		html_txt(strrpart(ctx.repo->name, 20));
+		html_txt(strrpart(ctx->repo->name, 20));
 		html("</h1>\n");
-		html_txt(ctx.repo->desc);
-		if (ctx.repo->owner) {
+		html_txt(ctx->repo->desc);
+		if (ctx->repo->owner) {
 			html("<h1>owner</h1>\n");
-			html_txt(ctx.repo->owner);
+			html_txt(ctx->repo->owner);
 		}
 		html("<h1>navigate</h1>\n");
-		reporevlink(NULL, "summary", NULL, "menu", ctx.qry.head,
+		reporevlink(NULL, "summary", NULL, "menu", ctx->qry.head,
 			    NULL, NULL);
-		cgit_log_link("log", NULL, "menu", ctx.qry.head, NULL, NULL,
+		cgit_log_link("log", NULL, "menu", ctx->qry.head, NULL, NULL,
 			      0, NULL, NULL);
-		cgit_tree_link("tree", NULL, "menu", ctx.qry.head,
-			       ctx.qry.sha1, NULL);
-		cgit_commit_link("commit", NULL, "menu", ctx.qry.head,
-			      ctx.qry.sha1);
-		cgit_diff_link("diff", NULL, "menu", ctx.qry.head,
-			       ctx.qry.sha1, ctx.qry.sha2, NULL);
-		cgit_patch_link("patch", NULL, "menu", ctx.qry.head,
-				ctx.qry.sha1);
+		cgit_tree_link("tree", NULL, "menu", ctx->qry.head,
+			       ctx->qry.sha1, NULL);
+		cgit_commit_link("commit", NULL, "menu", ctx->qry.head,
+			      ctx->qry.sha1);
+		cgit_diff_link("diff", NULL, "menu", ctx->qry.head,
+			       ctx->qry.sha1, ctx->qry.sha2, NULL);
+		cgit_patch_link("patch", NULL, "menu", ctx->qry.head,
+				ctx->qry.sha1);
 
 		for_each_ref(print_archive_ref, &header);
 
-		if (ctx.repo->clone_url || ctx.cfg.clone_prefix) {
+		if (ctx->repo->clone_url || ctx->cfg.clone_prefix) {
 			html("<h1>clone</h1>\n");
-			if (ctx.repo->clone_url)
-				url = ctx.repo->clone_url;
+			if (ctx->repo->clone_url)
+				url = ctx->repo->clone_url;
 			else
-				url = fmt("%s%s", ctx.cfg.clone_prefix,
-					  ctx.repo->url);
+				url = fmt("%s%s", ctx->cfg.clone_prefix,
+					  ctx->repo->url);
 			html("<a class='menu' href='");
 			html_attr(url);
 			html("' title='");
 			html_attr(url);
 			html("'>\n");
 			html_txt(strrpart(url, 20));
 			html("</a>\n");
 		}
 
 		html("<h1>branch</h1>\n");
 		html("<form method='get' action=''>\n");
-		add_hidden_formfields(0, 1, ctx.qry.page);
+		add_hidden_formfields(0, 1, ctx->qry.page);
 //		html("<table summary='branch selector' class='grid'><tr><td id='branch-dropdown-cell'>");
 		html("<select name='h' onchange='this.form.submit();'>\n");
-		for_each_branch_ref(print_branch_option, ctx.qry.head);
+		for_each_branch_ref(print_branch_option, ctx->qry.head);
 		html("</select>\n");
 //		html("</td><td>");
 		html("<noscript><input type='submit' id='switch-btn' value='switch'/></noscript>\n");
 //		html("</td></tr></table>");
 		html("</form>\n");
 
 		html("<h1>search</h1>\n");
 		html("<form method='get' action='");
-		if (ctx.cfg.virtual_root)
-			html_attr(cgit_fileurl(ctx.qry.repo, "log",
-					       ctx.qry.path, NULL));
+		if (ctx->cfg.virtual_root)
+			html_attr(cgit_fileurl(ctx->qry.repo, "log",
+					       ctx->qry.path, NULL));
 		html("'>\n");
 		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("grep", "log msg", ctx->qry.grep);
+		html_option("author", "author", ctx->qry.grep);
+		html_option("committer", "committer", ctx->qry.grep);
 		html("</select>\n");
 		html("<input class='txt' type='text' name='q' value='");
-		html_attr(ctx.qry.search);
+		html_attr(ctx->qry.search);
 		html("'/>\n");
 		html("</form>\n");
 	} else {
-		if (!ctx.cfg.index_info || html_include(ctx.cfg.index_info))
+		if (!ctx->cfg.index_info || html_include(ctx->cfg.index_info))
 			html(default_info);
 	}
 
 	html("</td></tr></table></td>\n");
 
 	html("<td id='content'>\n");
 }
 
-
-void cgit_print_snapshot_start(const char *mimetype, const char *filename,
-			       struct cacheitem *item)
-{
-	htmlf("Content-Type: %s\n", mimetype);
-	htmlf("Content-Disposition: inline; filename=\"%s\"\n", filename);
-	htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
-	htmlf("Expires: %s\n", http_date(item->st.st_mtime +
-					 ttl_seconds(item->ttl)));
-	html("\n");
-}
-
 void cgit_print_filemode(unsigned short mode)
 {
 	if (S_ISDIR(mode))
 		html("d");
 	else if (S_ISLNK(mode))
 		html("l");
 	else if (S_ISGITLINK(mode))
 		html("m");
 	else
 		html("-");
 	html_fileperm(mode >> 6);
 	html_fileperm(mode >> 3);
 	html_fileperm(mode);
 }
 
 /* vim:set sw=8: */
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 67dbbdd..4449803 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -1,158 +1,160 @@
 /* ui-snapshot.c: generate snapshot of a commit
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 
 static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
 {
 	int rw[2];
 	pid_t gzpid;
 	int stdout2;
 	int status;
 	int rv;
 
 	stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
 	chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
 	gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
 	if(gzpid==0) {
 		/* child */
 		chk_zero(close(rw[1]), "Closing write end of pipe in child");
 		chk_zero(close(STDIN_FILENO), "Closing STDIN");
 		chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
 		execlp(filter,filter,NULL);
 		_exit(-1);
 	}
 	/* parent */
 	chk_zero(close(rw[0]), "Closing read end of pipe");
 	chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
 
 	rv = write_tar_archive(args);
 
 	chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
 	chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
 	chk_zero(close(stdout2), "Closing uncompressed STDOUT");
 	chk_zero(close(rw[1]), "Closing write end of pipe in parent");
 	chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
 	if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
 		cgit_print_error("Failed to compress archive");
 
 	return rv;
 }
 
 static int write_tar_gzip_archive(struct archiver_args *args)
 {
 	return write_compressed_tar_archive(args,"gzip");
 }
 
 static int write_tar_bzip2_archive(struct archiver_args *args)
 {
 	return write_compressed_tar_archive(args,"bzip2");
 }
 
 static const struct snapshot_archive_t {
     	const char *suffix;
 	const char *mimetype;
 	write_archive_fn_t write_func;
 	int bit;
 }	snapshot_archives[] = {
 	{ ".zip", "application/x-zip", write_zip_archive, 0x1 },
 	{ ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 },
 	{ ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 },
 	{ ".tar", "application/x-tar", write_tar_archive, 0x8 }
 };
 
 #define snapshot_archives_len (sizeof(snapshot_archives) / sizeof(*snapshot_archives))
 
 void cgit_print_snapshot(struct cacheitem *item, const char *head,
 			 const char *hex, const char *prefix,
 			 const char *filename, int snapshots)
 {
 	const struct snapshot_archive_t* sat;
 	struct archiver_args args;
 	struct commit *commit;
 	unsigned char sha1[20];
 	int f, sl, fnl = strlen(filename);
 
 	for(f=0; f<snapshot_archives_len; f++) {
 		sat = &snapshot_archives[f];
 		if(!(snapshots & sat->bit))
 			continue;
 		sl = strlen(sat->suffix);
 		if(fnl<sl || strcmp(&filename[fnl-sl],sat->suffix))
 			continue;
 		if (!hex)
 			hex = head;
 		if(get_sha1(hex, sha1)) {
 			cgit_print_error(fmt("Bad object id: %s", hex));
 			return;
 		}
 		commit = lookup_commit_reference(sha1);
 		if(!commit) {
 			cgit_print_error(fmt("Not a commit reference: %s", hex));
 			return;;
 		}
 		memset(&args,0,sizeof(args));
 		args.base = fmt("%s/", prefix);
 		args.tree = commit->tree;
 		args.time = commit->date;
-		cgit_print_snapshot_start(sat->mimetype, filename, item);
+		ctx.page.mimetype = xstrdup(sat->mimetype);
+		ctx.page.filename = xstrdup(filename);
+		cgit_print_http_headers(&ctx);
 		(*sat->write_func)(&args);
 		return;
 	}
 	cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
 }
 
 void cgit_print_snapshot_links(const char *repo, const char *head,
 			       const char *hex, int snapshots)
 {
 	const struct snapshot_archive_t* sat;
     	char *filename;
 	int f;
 
 	for(f=0; f<snapshot_archives_len; f++) {
 		sat = &snapshot_archives[f];
 		if(!(snapshots & sat->bit))
 			continue;
 		filename = fmt("%s-%s%s", cgit_repobasename(repo), hex,
 			       sat->suffix);
 		cgit_snapshot_link(filename, NULL, NULL, (char *)head,
 				   (char *)hex, filename);
 		html("<br/>");
 	}
 }
 
 int cgit_parse_snapshots_mask(const char *str)
 {
 	const struct snapshot_archive_t* sat;
 	static const char *delim = " \t,:/|;";
 	int f, tl, sl, rv = 0;
 
 	/* favor legacy setting */
 	if(atoi(str))
 		return 1;
 	for(;;) {
 		str += strspn(str,delim);
 		tl = strcspn(str,delim);
 		if(!tl)
 			break;
 		for(f=0; f<snapshot_archives_len; f++) {
 			sat = &snapshot_archives[f];
 			sl = strlen(sat->suffix);
 			if((tl == sl && !strncmp(sat->suffix, str, tl)) ||
 			   (tl == sl-1 && !strncmp(sat->suffix+1, str, tl-1))) {
 				rv |= sat->bit;
 				break;
 			}
 		}
 		str += tl;
 	}
 	return rv;
 }
 
 /* vim:set sw=8: */