10 files changed, 175 insertions, 7 deletions

diff --git a/Makefile b/Makefile
index a305894..e4265f7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,126 +1,125 @@
 CGIT_VERSION = v0.7.2
 CGIT_SCRIPT_NAME = cgit.cgi
 CGIT_SCRIPT_PATH = /var/www/htdocs/cgit
 CGIT_CONFIG = /etc/cgitrc
 CACHE_ROOT = /var/cache/cgit
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 1.5.6
+GIT_VER = 1.6.0.rc1
 GIT_URL = http://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.bz2
 
 #
 # Let the user override the above settings.
 #
 -include cgit.conf
 
 #
 # Define a way to invoke make in subdirs quietly, shamelessly ripped
 # from git.git
 #
 QUIET_SUBDIR0  = +$(MAKE) -C # space to separate -C and subdir
 QUIET_SUBDIR1  =
 
 ifneq ($(findstring $(MAKEFLAGS),w),w)
 PRINT_DIR = --no-print-directory
 else # "make -w"
 NO_SUBDIR = :
 endif
 
 ifndef V
 	QUIET_CC       = @echo '   ' CC $@;
 	QUIET_MM       = @echo '   ' MM $@;
 	QUIET_SUBDIR0  = +@subdir=
 	QUIET_SUBDIR1  = ;$(NO_SUBDIR) echo '   ' SUBDIR $$subdir; \
 			 $(MAKE) $(PRINT_DIR) -C $$subdir
 endif
 
 #
 # Define a pattern rule for automatic dependency building
 #
 %.d: %.c
 	$(QUIET_MM)$(CC) $(CFLAGS) -MM $< | sed -e 's/\($*\)\.o:/\1.o $@:/g' >$@
 
 #
 # Define a pattern rule for silent object building
 #
 %.o: %.c
 	$(QUIET_CC)$(CC) -o $*.o -c $(CFLAGS) $<
 
 
 EXTLIBS = git/libgit.a git/xdiff/lib.a -lz -lcrypto
 OBJECTS =
 OBJECTS += cache.o
 OBJECTS += cgit.o
 OBJECTS += cmd.o
 OBJECTS += configfile.o
 OBJECTS += html.o
 OBJECTS += parsing.o
 OBJECTS += shared.o
+OBJECTS += ui-atom.o
 OBJECTS += ui-blob.o
 OBJECTS += ui-clone.o
 OBJECTS += ui-commit.o
 OBJECTS += ui-diff.o
 OBJECTS += ui-log.o
 OBJECTS += ui-patch.o
 OBJECTS += ui-plain.o
 OBJECTS += ui-refs.o
 OBJECTS += ui-repolist.o
 OBJECTS += ui-shared.o
 OBJECTS += ui-snapshot.o
 OBJECTS += ui-summary.o
 OBJECTS += ui-tag.o
 OBJECTS += ui-tree.o
 
 ifdef NEEDS_LIBICONV
 	EXTLIBS += -liconv
 endif
 
 
-.PHONY: all git test install uninstall clean force-version get-git
+.PHONY: all libgit test install uninstall clean force-version get-git
 
 all: cgit
 
 VERSION: force-version
 	@./gen-version.sh "$(CGIT_VERSION)"
 -include VERSION
 
 
 CFLAGS += -g -Wall -Igit
 CFLAGS += -DSHA1_HEADER='$(SHA1_HEADER)'
 CFLAGS += -DCGIT_VERSION='"$(CGIT_VERSION)"'
 CFLAGS += -DCGIT_CONFIG='"$(CGIT_CONFIG)"'
 CFLAGS += -DCGIT_SCRIPT_NAME='"$(CGIT_SCRIPT_NAME)"'
 CFLAGS += -DCGIT_CACHE_ROOT='"$(CACHE_ROOT)"'
 
 
-cgit: $(OBJECTS) git/libgit.a git/xdiff/lib.a
+cgit: $(OBJECTS) libgit
 	$(QUIET_CC)$(CC) $(CFLAGS) -o cgit $(OBJECTS) $(EXTLIBS)
 
 cgit.o: VERSION
 
 -include $(OBJECTS:.o=.d)
 
-git/libgit.a: git
+libgit:
 	$(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) libgit.a
-
-git/xdiff/lib.a: git
 	$(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) xdiff/lib.a
 
 test: all
 	$(QUIET_SUBDIR0)tests $(QUIET_SUBDIR1) all
 
 install: all
 	mkdir -p $(DESTDIR)$(CGIT_SCRIPT_PATH)
 	install cgit $(DESTDIR)$(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
 	install cgit.css $(DESTDIR)$(CGIT_SCRIPT_PATH)/cgit.css
 	install cgit.png $(DESTDIR)$(CGIT_SCRIPT_PATH)/cgit.png
 
 uninstall:
 	rm -f $(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
 	rm -f $(CGIT_SCRIPT_PATH)/cgit.css
 	rm -f $(CGIT_SCRIPT_PATH)/cgit.png
 
 clean:
 	rm -f cgit VERSION *.o *.d
 
 get-git:
 	curl $(GIT_URL) | tar -xj && rm -rf git && mv git-$(GIT_VER) git
diff --git a/cache.c b/cache.c
index 9f02cf5..57068a1 100644
--- a/cache.c
+++ b/cache.c
@@ -1,439 +1,439 @@
 /* cache.c: cache management
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  *
  *
  * The cache is just a directory structure where each file is a cache slot,
  * and each filename is based on the hash of some key (e.g. the cgit url).
  * Each file contains the full key followed by the cached content for that
  * key.
  *
  */
 
 #include "cgit.h"
 #include "cache.h"
 
 #define CACHE_BUFSIZE (1024 * 4)
 
 struct cache_slot {
 	const char *key;
 	int keylen;
 	int ttl;
 	cache_fill_fn fn;
 	void *cbdata;
 	int cache_fd;
 	int lock_fd;
 	const char *cache_name;
 	const char *lock_name;
 	int match;
 	struct stat cache_st;
 	struct stat lock_st;
 	int bufsize;
 	char buf[CACHE_BUFSIZE];
 };
 
 /* Open an existing cache slot and fill the cache buffer with
  * (part of) the content of the cache file. Return 0 on success
  * and errno otherwise.
  */
 static int open_slot(struct cache_slot *slot)
 {
 	char *bufz;
 	int bufkeylen = -1;
 
 	slot->cache_fd = open(slot->cache_name, O_RDONLY);
 	if (slot->cache_fd == -1)
 		return errno;
 
 	if (fstat(slot->cache_fd, &slot->cache_st))
 		return errno;
 
 	slot->bufsize = xread(slot->cache_fd, slot->buf, sizeof(slot->buf));
 	if (slot->bufsize < 0)
 		return errno;
 
 	bufz = memchr(slot->buf, 0, slot->bufsize);
 	if (bufz)
 		bufkeylen = bufz - slot->buf;
 
 	slot->match = bufkeylen == slot->keylen &&
 	    !memcmp(slot->key, slot->buf, bufkeylen + 1);
 
 	return 0;
 }
 
 /* Close the active cache slot */
 static int close_slot(struct cache_slot *slot)
 {
 	int err = 0;
 	if (slot->cache_fd > 0) {
 		if (close(slot->cache_fd))
 			err = errno;
 		else
 			slot->cache_fd = -1;
 	}
 	return err;
 }
 
 /* Print the content of the active cache slot (but skip the key). */
 static int print_slot(struct cache_slot *slot)
 {
 	ssize_t i, j;
 
 	i = lseek(slot->cache_fd, slot->keylen + 1, SEEK_SET);
 	if (i != slot->keylen + 1)
 		return errno;
 
 	do {
 		i = j = xread(slot->cache_fd, slot->buf, sizeof(slot->buf));
 		if (i > 0)
 			j = xwrite(STDOUT_FILENO, slot->buf, i);
 	} while (i > 0 && j == i);
 
 	if (i < 0 || j != i)
 		return errno;
 	else
 		return 0;
 }
 
 /* Check if the slot has expired */
 static int is_expired(struct cache_slot *slot)
 {
 	if (slot->ttl < 0)
 		return 0;
 	else
 		return slot->cache_st.st_mtime + slot->ttl*60 < time(NULL);
 }
 
 /* Check if the slot has been modified since we opened it.
  * NB: If stat() fails, we pretend the file is modified.
  */
 static int is_modified(struct cache_slot *slot)
 {
 	struct stat st;
 
 	if (stat(slot->cache_name, &st))
 		return 1;
 	return (st.st_ino != slot->cache_st.st_ino ||
 		st.st_mtime != slot->cache_st.st_mtime ||
 		st.st_size != slot->cache_st.st_size);
 }
 
 /* Close an open lockfile */
 static int close_lock(struct cache_slot *slot)
 {
 	int err = 0;
 	if (slot->lock_fd > 0) {
 		if (close(slot->lock_fd))
 			err = errno;
 		else
 			slot->lock_fd = -1;
 	}
 	return err;
 }
 
 /* Create a lockfile used to store the generated content for a cache
  * slot, and write the slot key + \0 into it.
  * Returns 0 on success and errno otherwise.
  */
 static int lock_slot(struct cache_slot *slot)
 {
 	slot->lock_fd = open(slot->lock_name, O_RDWR|O_CREAT|O_EXCL,
 			     S_IRUSR|S_IWUSR);
 	if (slot->lock_fd == -1)
 		return errno;
 	if (xwrite(slot->lock_fd, slot->key, slot->keylen + 1) < 0)
 		return errno;
 	return 0;
 }
 
 /* Release the current lockfile. If `replace_old_slot` is set the
  * lockfile replaces the old cache slot, otherwise the lockfile is
  * just deleted.
  */
 static int unlock_slot(struct cache_slot *slot, int replace_old_slot)
 {
 	int err;
 
 	if (replace_old_slot)
 		err = rename(slot->lock_name, slot->cache_name);
 	else
 		err = unlink(slot->lock_name);
 
 	if (err)
 		return errno;
 
 	return 0;
 }
 
 /* Generate the content for the current cache slot by redirecting
  * stdout to the lock-fd and invoking the callback function
  */
 static int fill_slot(struct cache_slot *slot)
 {
 	int tmp;
 
 	/* Preserve stdout */
 	tmp = dup(STDOUT_FILENO);
 	if (tmp == -1)
 		return errno;
 
 	/* Redirect stdout to lockfile */
 	if (dup2(slot->lock_fd, STDOUT_FILENO) == -1)
 		return errno;
 
 	/* Generate cache content */
 	slot->fn(slot->cbdata);
 
 	/* Restore stdout */
 	if (dup2(tmp, STDOUT_FILENO) == -1)
 		return errno;
 
 	/* Close the temporary filedescriptor */
 	if (close(tmp))
 		return errno;
 
 	return 0;
 }
 
 /* Crude implementation of 32-bit FNV-1 hash algorithm,
  * see http://www.isthe.com/chongo/tech/comp/fnv/ for details
  * about the magic numbers.
  */
 #define FNV_OFFSET 0x811c9dc5
 #define FNV_PRIME  0x01000193
 
 unsigned long hash_str(const char *str)
 {
 	unsigned long h = FNV_OFFSET;
 	unsigned char *s = (unsigned char *)str;
 
 	if (!s)
 		return h;
 
 	while(*s) {
 		h *= FNV_PRIME;
 		h ^= *s++;
 	}
 	return h;
 }
 
 static int process_slot(struct cache_slot *slot)
 {
 	int err;
 
 	err = open_slot(slot);
 	if (!err && slot->match) {
 		if (is_expired(slot)) {
 			if (!lock_slot(slot)) {
 				/* If the cachefile has been replaced between
 				 * `open_slot` and `lock_slot`, we'll just
 				 * serve the stale content from the original
 				 * cachefile. This way we avoid pruning the
 				 * newly generated slot. The same code-path
 				 * is chosen if fill_slot() fails for some
 				 * reason.
 				 *
 				 * TODO? check if the new slot contains the
 				 * same key as the old one, since we would
 				 * prefer to serve the newest content.
 				 * This will require us to open yet another
 				 * file-descriptor and read and compare the
 				 * key from the new file, so for now we're
 				 * lazy and just ignore the new file.
 				 */
 				if (is_modified(slot) || fill_slot(slot)) {
 					unlock_slot(slot, 0);
 					close_lock(slot);
 				} else {
 					close_slot(slot);
 					unlock_slot(slot, 1);
 					slot->cache_fd = slot->lock_fd;
 				}
 			}
 		}
 		if ((err = print_slot(slot)) != 0) {
 			cache_log("[cgit] error printing cache %s: %s (%d)\n",
 				  slot->cache_name,
 				  strerror(err),
 				  err);
 		}
 		close_slot(slot);
 		return err;
 	}
 
 	/* If the cache slot does not exist (or its key doesn't match the
 	 * current key), lets try to create a new cache slot for this
 	 * request. If this fails (for whatever reason), lets just generate
 	 * the content without caching it and fool the caller to belive
 	 * everything worked out (but print a warning on stdout).
 	 */
 
 	close_slot(slot);
 	if ((err = lock_slot(slot)) != 0) {
 		cache_log("[cgit] Unable to lock slot %s: %s (%d)\n",
 			  slot->lock_name, strerror(err), err);
 		slot->fn(slot->cbdata);
 		return 0;
 	}
 
 	if ((err = fill_slot(slot)) != 0) {
 		cache_log("[cgit] Unable to fill slot %s: %s (%d)\n",
 			  slot->lock_name, strerror(err), err);
 		unlock_slot(slot, 0);
 		close_lock(slot);
 		slot->fn(slot->cbdata);
 		return 0;
 	}
 	// We've got a valid cache slot in the lock file, which
 	// is about to replace the old cache slot. But if we
 	// release the lockfile and then try to open the new cache
 	// slot, we might get a race condition with a concurrent
 	// writer for the same cache slot (with a different key).
 	// Lets avoid such a race by just printing the content of
 	// the lock file.
 	slot->cache_fd = slot->lock_fd;
 	unlock_slot(slot, 1);
 	if ((err = print_slot(slot)) != 0) {
 		cache_log("[cgit] error printing cache %s: %s (%d)\n",
 			  slot->cache_name,
 			  strerror(err),
 			  err);
 	}
 	close_slot(slot);
 	return err;
 }
 
 /* Print cached content to stdout, generate the content if necessary. */
 int cache_process(int size, const char *path, const char *key, int ttl,
 		  cache_fill_fn fn, void *cbdata)
 {
 	unsigned long hash;
 	int len, i;
 	char filename[1024];
 	char lockname[1024 + 5];  /* 5 = ".lock" */
 	struct cache_slot slot;
 
 	/* If the cache is disabled, just generate the content */
 	if (size <= 0) {
 		fn(cbdata);
 		return 0;
 	}
 
 	/* Verify input, calculate filenames */
 	if (!path) {
 		cache_log("[cgit] Cache path not specified, caching is disabled\n");
 		fn(cbdata);
 		return 0;
 	}
 	len = strlen(path);
 	if (len > sizeof(filename) - 10) { /* 10 = "/01234567\0" */
 		cache_log("[cgit] Cache path too long, caching is disabled: %s\n",
 			  path);
 		fn(cbdata);
 		return 0;
 	}
 	if (!key)
 		key = "";
 	hash = hash_str(key) % size;
 	strcpy(filename, path);
 	if (filename[len - 1] != '/')
 		filename[len++] = '/';
 	for(i = 0; i < 8; i++) {
 		sprintf(filename + len++, "%x",
 			(unsigned char)(hash & 0xf));
 		hash >>= 4;
 	}
 	filename[len] = '\0';
 	strcpy(lockname, filename);
 	strcpy(lockname + len, ".lock");
 	slot.fn = fn;
 	slot.cbdata = cbdata;
 	slot.ttl = ttl;
 	slot.cache_name = filename;
 	slot.lock_name = lockname;
 	slot.key = key;
 	slot.keylen = strlen(key);
 	return process_slot(&slot);
 }
 
 /* Return a strftime formatted date/time
  * NB: the result from this function is to shared memory
  */
 char *sprintftime(const char *format, time_t time)
 {
 	static char buf[64];
 	struct tm *tm;
 
 	if (!time)
 		return NULL;
 	tm = gmtime(&time);
 	strftime(buf, sizeof(buf)-1, format, tm);
 	return buf;
 }
 
 int cache_ls(const char *path)
 {
 	DIR *dir;
 	struct dirent *ent;
 	int err = 0;
 	struct cache_slot slot;
 	char fullname[1024];
 	char *name;
 
 	if (!path) {
 		cache_log("[cgit] cache path not specified\n");
 		return -1;
 	}
 	if (strlen(path) > 1024 - 10) {
 		cache_log("[cgit] cache path too long: %s\n",
 			  path);
 		return -1;
 	}
 	dir = opendir(path);
 	if (!dir) {
 		err = errno;
 		cache_log("[cgit] unable to open path %s: %s (%d)\n",
 			  path, strerror(err), err);
 		return err;
 	}
 	strcpy(fullname, path);
 	name = fullname + strlen(path);
 	if (*(name - 1) != '/') {
 		*name++ = '/';
 		*name = '\0';
 	}
 	slot.cache_name = fullname;
 	while((ent = readdir(dir)) != NULL) {
 		if (strlen(ent->d_name) != 8)
 			continue;
 		strcpy(name, ent->d_name);
 		if ((err = open_slot(&slot)) != 0) {
 			cache_log("[cgit] unable to open path %s: %s (%d)\n",
 				  fullname, strerror(err), err);
 			continue;
 		}
-		printf("%s %s %10lld %s\n",
+		printf("%s %s %10zd %s\n",
 		       name,
 		       sprintftime("%Y-%m-%d %H:%M:%S",
 				   slot.cache_st.st_mtime),
 		       slot.cache_st.st_size,
 		       slot.buf);
 		close_slot(&slot);
 	}
 	closedir(dir);
 	return 0;
 }
 
 /* Print a message to stdout */
 void cache_log(const char *format, ...)
 {
 	va_list args;
 	va_start(args, format);
 	vfprintf(stderr, format, args);
 	va_end(args);
 }
 
diff --git a/cgit.h b/cgit.h
index e2af0c2..1615616 100644
--- a/cgit.h
+++ b/cgit.h
@@ -1,240 +1,241 @@
 #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>
 
 
 /*
  * Dateformats used on misc. pages
  */
 #define FMT_LONGDATE "%Y-%m-%d %H:%M:%S (%Z)"
 #define FMT_SHORTDATE "%Y-%m-%d"
+#define FMT_ATOMDATE "%Y-%m-%dT%H:%M:%SZ"
 
 
 /*
  * 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 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;
 	char *mimetype;
 	int   ofs;
 };
 
 struct cgit_config {
 	char *agefile;
 	char *cache_root;
 	char *clone_prefix;
 	char *css;
 	char *favicon;
 	char *footer;
 	char *index_header;
 	char *index_info;
 	char *logo;
 	char *logo_link;
 	char *module_link;
 	char *repo_group;
 	char *robots;
 	char *root_title;
 	char *root_desc;
 	char *root_readme;
 	char *script_name;
 	char *virtual_root;
 	int cache_size;
 	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 local_time;
 	int max_repo_count;
 	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;
 	size_t size;
 	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;
 };
 
 struct cgit_snapshot_format {
 	const char *suffix;
 	const char *mimetype;
 	write_archive_fn_t write_func;
 	int bit;
 };
 
 extern const char *cgit_version;
 
 extern struct cgit_repolist cgit_repolist;
 extern struct cgit_context ctx;
 extern const struct cgit_snapshot_format cgit_snapshot_formats[];
 
 extern struct cgit_repo *cgit_add_repo(const char *url);
 extern struct cgit_repo *cgit_get_repoinfo(const char *url);
 extern void cgit_repo_config_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 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 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 const char *cgit_repobasename(const char *reponame);
 
 extern int cgit_parse_snapshots_mask(const char *str);
 
 /* libgit.a either links against or compiles its own implementation of
  * strcasestr(), and we'd like to reuse it. Simply re-declaring it
  * seems to do the trick.
  */
 extern char *strcasestr(const char *haystack, const char *needle);
 
 
 #endif /* CGIT_H */
diff --git a/cgitrc b/cgitrc
index 9e8a0f2..6a79c43 100644
--- a/cgitrc
+++ b/cgitrc
@@ -1,200 +1,202 @@
 ##
 ## cgitrc: template for /etc/cgitrc
 ##
 
 
 ## Uncomment and set to 1 to deactivate caching of generated pages. Mostly
 ## usefull for testing.
 #nocache=0
 
 
 ## This variable can be used to override the default value for "robots"
 ## meta-tag. If unset, the meta-tag isn't generated.
 #robots=index, nofollow
 
 
 ## Set allowed snapshot types by default. Can be overridden per repo
 # can be any combination of zip/tar.gz/tar.bz2/tar
 #snapshots=0
 
 
 ## Enable/disable extra links to summary/log/tree per repo on index page
 #enable-index-links=0
 
 
 ## Enable/disable display of 'number of files changed' in log view
 #enable-log-filecount=0
 
 
 ## Enable/disable display of 'number of lines changed' in log view
 #enable-log-linecount=0
 
 
 ## Enable/disable display of HEAD shortlog in summary view. Set it to maximum
 ## number of commits that should be displayed
 #summary-log=0
 
 
 ## Restrict the number of branches printed in summary view. Set to 0 to
 ## print all branches.
 #summary-branches=0
 
 
 ## Restrict the number of tags printed in summary view. Set to 0 to
 ## print all tags.
 #summary-tags=0
 
+## Enable/disable display of localtime vs. GMT. Set to 1 for localtime.
+#local-time=0
 
 ## The "Idle" column on the repository index page can read a timestamp
 ## from the specified agefile (if this file cannot be found, the mtime
 ## of HEAD is used).
 ## The cgit repo on hjemli.net uses the the following command in it's
 ## post-receive hook to update the age-file:
 ##   git-for-each-ref --format="%(committerdate)" --sort=-committerdate \
 ##     --count=1 > $GIT_DIR/info/web/last-modifie
 ##
 #agefile=info/web/last-modified
 
 
 ## Git detects renames, but with a limit on the number of files to
 ## consider. This option can be used to specify another limit (or -1 to
 ## use the default limit).
 ##
 #renamelimit=-1
 
 
 ## Specify a root for virtual urls. This makes cgit generate urls like
 ##
 ##    http://localhost/git/repo/log/?h=branch
 ##
 ## instead of
 ##
 ##    http://localhost/cgit/cgit.cgi?url=repo/log&h=branch
 ##
 ## For this to work with apache, a rewrite rule must be added to httpd.conf,
 ## possibly looking something like this:
 ##
 ##    RewriteRule ^/git/(.*)$ /cgit/cgit.cgi?url=$1   [L,QSA]
 ##
 ## For this to work with lighttpd, the rewrite rule should look more like this:
 ##
 ##    url.rewrite = (
 ##        "^/git/([^?/]+/[^?]*)?(?:\?(.*))?$" => "/cgit.cgi?url=$1&$2"
 ##    )
 ##
 ## This setting is disabled by default.
 #virtual-root=/git
 
 
 ## Set the title printed on the root page
 #root-title=Git repository browser
 
 
 ## Set the description printed on the root page
 #root-desc=a fast web interface for the git dscm
 
 
 ## If specified, the file at this path will be included as HTML in the
 ## sidebar on the repository index page
 #index-info=
 
 
 ## If specified, the file at this path will be included as HTML above
 ## the repository index
 #index-header=
 
 
 ## Link to css file
 #css=/cgit/cgit.css
 
 ## Link to favicon
 #favicon=/favicon.ico
 
 ## Link to logo file
 #logo=/cgit/git-logo.png
 
 
 ## Url loaded when clicking the logo
 #logo-link=http://www.kernel.org/pub/software/scm/git/docs/
 
 
 ## Url loaded when clicking a submodule link
 #module-link=./?repo=%s&page=commit&id=%s
 
 
 ## Shared prefix which, when combined with repo url, becomes the url used
 ## to clone the repo
 #clone-prefix=
 
 
 ## Number of chars shown of repo description (in repolist view)
 #max-repodesc-length=60
 
 
 ## Number of chars shown of commit subject message (in log view)
 #max-message-length=60
 
 
 ## Number of commits per page in log view
 #max-commit-count=50
 
 
 ## Root of cached output
 #cache-root=/var/cache/cgit
 
 
 ## Include another config-file
 #include=/var/cgit/repolist
 
 ##
 ## Time-To-Live settings: specifies how long (in minutes) different pages
 ## should be cached (0 for instant expiration, -1 for immortal pages)
 ##
 
 ## ttl for root page
 #cache-root-ttl=5
 
 ## ttl for repo summary page
 #cache-repo-ttl=5
 
 ## ttl for other dynamic pages
 #cache-dynamic-ttl=5
 
 ## ttl for static pages (addressed by SHA-1)
 #cache-static-ttl=-1
 
 
 
 ## Example repository entry. Required values are repo.url and repo.path (each
 ## repository section must start with repo.url).
 #repo.url=cgit
 #repo.name=cgit
 #repo.desc=the caching cgi for git
 #repo.path=/pub/git/cgit			## this is the path to $GIT_DIR
 #repo.owner=Lars Hjemli
 #repo.defbranch=master				## define a default branch
 #repo.snapshots=tar.bz2				## override a sitewide snapshot-setting
 #repo.enable-log-filecount=0			## override the default filecount setting
 #repo.enable-log-linecount=0			## override the default linecount setting
 #repo.module-link=/git/%s/commit/?id=%s		## override the standard module-link
 #repo.readme=info/web/readme			## specify a file to include on summary page
 #repo.clone-url=git://hjemli.net/pub/git/cgit
 
 ## Additional repositories grouped under "mirrors"
 #repo.group=mirrors
 
 #repo.url=git
 #repo.path=/pub/git/git
 #repo.clone-url=git://hjemli.net/pub/git/git
 #
 #repo.url=linux
 #repo.path=/pub/git/linux
 
 ## A group of private repositories (with a working directory)
 #repo.group=private
 
 #repo.url=larsh/cgit
 #repo.path=/home/larsh/src/cgit/.git
 
 #repo.url=larsh/git
 #repo.path=/home/larsh/src/git/.git
diff --git a/cmd.c b/cmd.c
index 2b34189..a989220 100644
--- a/cmd.c
+++ b/cmd.c
@@ -1,158 +1,165 @@
 /* cmd.c: the cgit command dispatcher
  *
  * Copyright (C) 2008 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "cmd.h"
 #include "cache.h"
 #include "ui-shared.h"
+#include "ui-atom.h"
 #include "ui-blob.h"
 #include "ui-clone.h"
 #include "ui-commit.h"
 #include "ui-diff.h"
 #include "ui-log.h"
 #include "ui-patch.h"
 #include "ui-plain.h"
 #include "ui-refs.h"
 #include "ui-repolist.h"
 #include "ui-snapshot.h"
 #include "ui-summary.h"
 #include "ui-tag.h"
 #include "ui-tree.h"
 
 static void HEAD_fn(struct cgit_context *ctx)
 {
 	cgit_clone_head(ctx);
 }
 
+static void atom_fn(struct cgit_context *ctx)
+{
+	cgit_print_atom(ctx->qry.head, ctx->qry.path, 10);
+}
+
 static void about_fn(struct cgit_context *ctx)
 {
 	if (ctx->repo)
 		cgit_print_repo_readme();
 	else
 		cgit_print_site_readme();
 }
 
 static void blob_fn(struct cgit_context *ctx)
 {
 	cgit_print_blob(ctx->qry.sha1, ctx->qry.path, ctx->qry.head);
 }
 
 static void commit_fn(struct cgit_context *ctx)
 {
 	cgit_print_commit(ctx->qry.sha1);
 }
 
 static void diff_fn(struct cgit_context *ctx)
 {
 	cgit_print_diff(ctx->qry.sha1, ctx->qry.sha2, ctx->qry.path);
 }
 
 static void info_fn(struct cgit_context *ctx)
 {
 	cgit_clone_info(ctx);
 }
 
 static void log_fn(struct cgit_context *ctx)
 {
 	cgit_print_log(ctx->qry.sha1, ctx->qry.ofs, ctx->cfg.max_commit_count,
 		       ctx->qry.grep, ctx->qry.search, ctx->qry.path, 1);
 }
 
 static void ls_cache_fn(struct cgit_context *ctx)
 {
 	ctx->page.mimetype = "text/plain";
 	ctx->page.filename = "ls-cache.txt";
 	cgit_print_http_headers(ctx);
 	cache_ls(ctx->cfg.cache_root);
 }
 
 static void objects_fn(struct cgit_context *ctx)
 {
 	cgit_clone_objects(ctx);
 }
 
 static void repolist_fn(struct cgit_context *ctx)
 {
 	cgit_print_repolist();
 }
 
 static void patch_fn(struct cgit_context *ctx)
 {
 	cgit_print_patch(ctx->qry.sha1);
 }
 
 static void plain_fn(struct cgit_context *ctx)
 {
 	cgit_print_plain(ctx);
 }
 
 static void refs_fn(struct cgit_context *ctx)
 {
 	cgit_print_refs();
 }
 
 static void snapshot_fn(struct cgit_context *ctx)
 {
 	cgit_print_snapshot(ctx->qry.head, ctx->qry.sha1,
 			    cgit_repobasename(ctx->repo->url), ctx->qry.path,
 			    ctx->repo->snapshots);
 }
 
 static void summary_fn(struct cgit_context *ctx)
 {
 	cgit_print_summary();
 }
 
 static void tag_fn(struct cgit_context *ctx)
 {
 	cgit_print_tag(ctx->qry.sha1);
 }
 
 static void tree_fn(struct cgit_context *ctx)
 {
 	cgit_print_tree(ctx->qry.sha1, ctx->qry.path);
 }
 
 #define def_cmd(name, want_repo, want_layout) \
 	{#name, name##_fn, want_repo, want_layout}
 
 struct cgit_cmd *cgit_get_cmd(struct cgit_context *ctx)
 {
 	static struct cgit_cmd cmds[] = {
 		def_cmd(HEAD, 1, 0),
+		def_cmd(atom, 1, 0),
 		def_cmd(about, 0, 1),
 		def_cmd(blob, 1, 0),
 		def_cmd(commit, 1, 1),
 		def_cmd(diff, 1, 1),
 		def_cmd(info, 1, 0),
 		def_cmd(log, 1, 1),
 		def_cmd(ls_cache, 0, 0),
 		def_cmd(objects, 1, 0),
 		def_cmd(patch, 1, 0),
 		def_cmd(plain, 1, 0),
 		def_cmd(refs, 1, 1),
 		def_cmd(repolist, 0, 0),
 		def_cmd(snapshot, 1, 0),
 		def_cmd(summary, 1, 1),
 		def_cmd(tag, 1, 1),
 		def_cmd(tree, 1, 1),
 	};
 	int i;
 
 	if (ctx->qry.page == NULL) {
 		if (ctx->repo)
 			ctx->qry.page = "summary";
 		else
 			ctx->qry.page = "repolist";
 	}
 
 	for(i = 0; i < sizeof(cmds)/sizeof(*cmds); i++)
 		if (!strcmp(ctx->qry.page, cmds[i].name))
 			return &cmds[i];
 	return NULL;
 }
diff --git a/git b/git
-Subproject 93310a40eb022a0e36e7c618921931d8ffc31fd
+Subproject 8e1db3871c767cb17b5e0eeb7bea8d967821a05
diff --git a/ui-atom.c b/ui-atom.c
new file mode 100644
index 0000000..a6ea3ee
--- a/dev/null
+++ b/ui-atom.c
@@ -0,0 +1,129 @@
+/* ui-atom.c: functions for atom feeds
+ *
+ * Copyright (C) 2008 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"
+
+void add_entry(struct commit *commit, char *host)
+{
+	char delim = '&';
+	char *hex;
+	char *mail, *t, *t2;
+	struct commitinfo *info;
+
+	info = cgit_parse_commit(commit);
+	hex = sha1_to_hex(commit->object.sha1);
+	html("<entry>\n");
+	html("<title>");
+	html_txt(info->subject);
+	html("</title>\n");
+	html("<updated>");
+	cgit_print_date(info->author_date, FMT_ATOMDATE, ctx.cfg.local_time);
+	html("</updated>\n");
+	html("<author>\n");
+	if (info->author) {
+		html("<name>");
+		html_txt(info->author);
+		html("</name>\n");
+	}
+	if (info->author_email) {
+		mail = xstrdup(info->author_email);
+		t = strchr(mail, '<');
+		if (t)
+			t++;
+		else
+			t = mail;
+		t2 = strchr(t, '>');
+		if (t2)
+			*t2 = '\0';
+		html("<email>");
+		html_txt(t);
+		html("</email>\n");
+		free(mail);
+	}
+	html("</author>\n");
+	html("<published>");
+	cgit_print_date(info->author_date, FMT_ATOMDATE, ctx.cfg.local_time);
+	html("</published>\n");
+	if (host) {
+		html("<link rel='alternate' type='text/html' href='http://");
+		html_attr(host);
+		html_attr(cgit_pageurl(ctx.repo->url, "commit", NULL));
+		if (ctx.cfg.virtual_root)
+			delim = '?';
+		htmlf("%cid=%s", delim, hex);
+		html("'/>\n");
+	}
+	htmlf("<id>%s</id>\n", hex);
+	html("<content type='text'>\n");
+	html_txt(info->msg);
+	html("</content>\n");
+	html("<content type='xhtml'>\n");
+	html("<div xmlns='http://www.w3.org/1999/xhtml'>\n");
+	html("<pre>\n");
+	html_txt(info->msg);
+	html("</pre>\n");
+	html("</div>\n");
+	html("</content>\n");
+	html("</entry>\n");
+	cgit_free_commitinfo(info);
+}
+
+
+void cgit_print_atom(char *tip, char *path, int max_count)
+{
+	char *host;
+	const char *argv[] = {NULL, tip, NULL, NULL, NULL};
+	struct commit *commit;
+	struct rev_info rev;
+	int argc = 2;
+
+	if (!tip)
+		argv[1] = ctx.qry.head;
+
+	if (path) {
+		argv[argc++] = "--";
+		argv[argc++] = path;
+	}
+
+	init_revisions(&rev, NULL);
+	rev.abbrev = DEFAULT_ABBREV;
+	rev.commit_format = CMIT_FMT_DEFAULT;
+	rev.verbose_header = 1;
+	rev.show_root_diff = 0;
+	rev.max_count = max_count;
+	setup_revisions(argc, argv, &rev, NULL);
+	prepare_revision_walk(&rev);
+
+	host = cgit_hosturl();
+	ctx.page.mimetype = "text/xml";
+	ctx.page.charset = "utf-8";
+	cgit_print_http_headers(&ctx);
+	html("<feed xmlns='http://www.w3.org/2005/Atom'>\n");
+	html("<title>");
+	html_txt(ctx.repo->name);
+	html("</title>\n");
+	html("<subtitle>");
+	html_txt(ctx.repo->desc);
+	html("</subtitle>\n");
+	if (host) {
+		html("<link rel='alternate' type='text/html' href='http://");
+		html_attr(host);
+		html_attr(cgit_repourl(ctx.repo->url));
+		html("'/>\n");
+	}
+	while ((commit = get_revision(&rev)) != NULL) {
+		add_entry(commit, host);
+		free(commit->buffer);
+		commit->buffer = NULL;
+		free_commit_list(commit->parents);
+		commit->parents = NULL;
+	}
+	html("</feed>\n");
+}
diff --git a/ui-atom.h b/ui-atom.h
new file mode 100644
index 0000000..749ffd3
--- a/dev/null
+++ b/ui-atom.h
@@ -0,0 +1,6 @@
+#ifndef UI_ATOM_H
+#define UI_ATOM_H
+
+extern void cgit_print_atom(char *tip, char *path, int max_count);
+
+#endif
diff --git a/ui-shared.c b/ui-shared.c
index a2e0dd2..4818e70 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -1,684 +1,707 @@
 /* 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 "cmd.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);
 }
 
 void cgit_print_error(char *msg)
 {
 	html("<div class='error'>");
 	html_txt(msg);
 	html("</div>\n");
 }
 
+char *cgit_hosturl()
+{
+	char *host, *port;
+
+	host = getenv("SERVER_NAME");
+	if (!host)
+		return NULL;
+	port = getenv("SERVER_PORT");
+	if (port && atoi(port) != 80)
+		host = xstrdup(fmt("%s:%d", host, atoi(port)));
+	else
+		host = xstrdup(host);
+	return host;
+}
+
 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 void site_url(char *page, char *search, int ofs)
 {
 	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) {
 		htmlf("?p=%s", page);
 		delim = "&";
 	}
 	if (search) {
 		html(delim);
 		html("q=");
 		html_attr(search);
 		delim = "&";
 	}
 	if (ofs) {
 		html(delim);
 		htmlf("ofs=%d", ofs);
 	}
 }
 
 static void site_link(char *page, char *name, char *title, char *class,
 		      char *search, int ofs)
 {
 	html("<a");
 	if (title) {
 		html(" title='");
 		html_attr(title);
 		html("'");
 	}
 	if (class) {
 		html(" class='");
 		html_attr(class);
 		html("'");
 	}
 	html(" href='");
 	site_url(page, search, ofs);
 	html("'>");
 	html_txt(name);
 	html("</a>");
 }
 
 void cgit_index_link(char *name, char *title, char *class, char *pattern,
 		     int ofs)
 {
 	site_link(NULL, name, title, class, pattern, ofs);
 }
 
 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_plain_link(char *name, char *title, char *class, char *head,
 		     char *rev, char *path)
 {
 	reporevlink("plain", 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, int local_time)
 {
 	char buf[64];
 	struct tm *time;
 
 	if (!secs)
 		return;
 	if(local_time)
 		time = localtime(&secs);
 	else
 		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, ctx.cfg.local_time);
 		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_http_headers(struct cgit_context *ctx)
 {
 	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: %ld\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));
 	html("\n");
 }
 
 void cgit_print_docstart(struct cgit_context *ctx)
 {
+	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("</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);
 	html("<link rel='stylesheet' type='text/css' href='");
 	html_attr(ctx->cfg.css);
 	html("'/>\n");
 	if (ctx->cfg.favicon) {
 		html("<link rel='shortcut icon' href='");
 		html_attr(ctx->cfg.favicon);
 		html("'/>\n");
 	}
+	if (host && ctx->repo) {
+		html("<link rel='alternate' title='Atom feed' href='http://");
+		html_attr(cgit_hosturl());
+		html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.path,
+				       fmt("h=%s", ctx->qry.head)));
+		html("' type='application/atom+xml'/>");
+	}
 	html("</head>\n");
 	html("<body>\n");
 }
 
 void cgit_print_docend()
 {
 	html("</div>");
 	if (ctx.cfg.footer)
 		html_include(ctx.cfg.footer);
 	else {
 		html("<div class='footer'>generated ");
 		cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 		htmlf(" by cgit %s", cgit_version);
 		html("</div>\n");
 	}
 	html("</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 && ctx.qry.head && ctx.repo->defbranch &&
 	    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);
 	}
 }
 
 char *hc(struct cgit_cmd *cmd, const char *page)
 {
 	return (strcmp(cmd->name, page) ? NULL : "active");
 }
 
 void cgit_print_pageheader(struct cgit_context *ctx)
 {
 	struct cgit_cmd *cmd = cgit_get_cmd(ctx);
 
 	html("<table id='header'>\n");
 	html("<tr>\n");
 	html("<td class='logo' rowspan='2'><a href='");
 	if (ctx->cfg.logo_link)
 		html_attr(ctx->cfg.logo_link);
 	else
 		html_attr(cgit_rooturl());
 	html("'><img src='");
 	html_attr(ctx->cfg.logo);
 	html("' alt='cgit logo'/></a></td>\n");
 
 	html("<td class='main'>");
 	if (ctx->repo) {
 		cgit_index_link("index", NULL, NULL, NULL, 0);
 		html(" : ");
 		reporevlink(NULL, ctx->repo->name, NULL, hc(cmd, "summary"),
 			    ctx->qry.head, NULL, NULL);
 		html("</td><td class='form'>");
 		html("<form method='get' action=''>\n");
 		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("</td></tr>\n");
 
 	html("<tr><td class='sub'>");
 	if (ctx->repo) {
 		html_txt(ctx->repo->desc);
 		html("</td><td class='sub right'>");
 		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);
 	}
 	html("</td></tr></table>\n");
 
 	html("<table class='tabs'><tr><td>\n");
 	if (ctx->repo) {
 		reporevlink(NULL, "summary", NULL, hc(cmd, "summary"),
 			    ctx->qry.head, NULL, NULL);
 		cgit_refs_link("refs", NULL, hc(cmd, "refs"), ctx->qry.head,
 			       ctx->qry.sha1, NULL);
 		cgit_log_link("log", NULL, hc(cmd, "log"), ctx->qry.head,
 			      NULL, NULL, 0, NULL, NULL);
 		cgit_tree_link("tree", NULL, hc(cmd, "tree"), ctx->qry.head,
 			       ctx->qry.sha1, NULL);
 		cgit_commit_link("commit", NULL, hc(cmd, "commit"),
 				 ctx->qry.head, ctx->qry.sha1);
 		cgit_diff_link("diff", NULL, hc(cmd, "diff"), ctx->qry.head,
 			       ctx->qry.sha1, ctx->qry.sha2, NULL);
 		if (ctx->repo->readme)
 			reporevlink("about", "about", NULL,
 				    hc(cmd, "about"), ctx->qry.head, NULL,
 				    NULL);
 		html("</td><td class='form'>");
 		html("<form class='right' method='get' action='");
 		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("</select>\n");
 		html("<input class='txt' type='text' size='10' name='q' value='");
 		html_attr(ctx->qry.search);
 		html("'/>\n");
 		html("<input type='submit' value='search'/>\n");
 		html("</form>\n");
 	} else {
 		site_link(NULL, "index", NULL, hc(cmd, "repolist"), NULL, 0);
 		if (ctx->cfg.root_readme)
 			site_link("about", "about", NULL, hc(cmd, "about"),
 				  NULL, 0);
 		html("</td><td class='form'>");
 		html("<form method='get' action='");
 		html_attr(cgit_rooturl());
 		html("'>\n");
 		html("<input type='text' name='q' size='10' value='");
 		html_attr(ctx->qry.search);
 		html("'/>\n");
 		html("<input type='submit' value='search'/>\n");
 		html("</form>");
 	}
 	html("</td></tr></table>\n");
 	html("<div class='content'>");
 }
 
 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);
 }
 
 void cgit_print_snapshot_links(const char *repo, const char *head,
 			       const char *hex, int snapshots)
 {
 	const struct cgit_snapshot_format* f;
     	char *filename;
 
 	for (f = cgit_snapshot_formats; f->suffix; f++) {
 		if (!(snapshots & f->bit))
 			continue;
 		filename = fmt("%s-%s%s", cgit_repobasename(repo), hex,
 			       f->suffix);
 		cgit_snapshot_link(filename, NULL, NULL, (char *)head,
 				   (char *)hex, filename);
 		html("<br/>");
 	}
 }
diff --git a/ui-shared.h b/ui-shared.h
index c5ce056..747f092 100644
--- a/ui-shared.h
+++ b/ui-shared.h
@@ -1,42 +1,43 @@
 #ifndef UI_SHARED_H
 #define UI_SHARED_H
 
+extern char *cgit_hosturl();
 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 void cgit_index_link(char *name, char *title, char *class,
 			    char *pattern, int ofs);
 extern void cgit_tree_link(char *name, char *title, char *class, char *head,
 			   char *rev, char *path);
 extern void cgit_plain_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_patch_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, int local_time);
 extern void cgit_print_age(time_t t, time_t max_relative, char *format);
 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(struct cgit_context *ctx);
 extern void cgit_print_filemode(unsigned short mode);
 extern void cgit_print_snapshot_links(const char *repo, const char *head,
 				      const char *hex, int snapshots);
 
 #endif /* UI_SHARED_H */