[PATCH 04/07] Inject repo authorization filter. Provide sample for gitolite integration.

[georg at riseup.net (Georg Faerber)]

Hi all,

Any chance of getting this merged?

Cheers,
Georg

On 15-11-27 22:46:57, The Ranger wrote:
> ---
>  filters/gitolite-authorization.lua | 74 ++++++++++++++++++++++++++++++++++++++
>  scan-tree.c                        | 18 ++++++++++
>  2 files changed, 92 insertions(+)
>  create mode 100644 filters/gitolite-authorization.lua
> 
> diff --git a/filters/gitolite-authorization.lua b/filters/gitolite-authorization.lua
> new file mode 100644
> index 0000000..2f0e4f5
> --- /dev/null
> +++ b/filters/gitolite-authorization.lua
> @@ -0,0 +1,74 @@
> +-- This script can be used with project-filter option
> +-- It uses REMOTE_USER environment variable to obtain the user who needs to be authorized
> +-- This variable is normally set by HTTP Basic Authentication.
> +-- In Apache something like this can be used:
> +--
> +--    AuthType Basic
> +--    AuthName Protected area
> +--    AuthUserFile users.htpasswd
> +--    Require valid-user
> +--
> +-- For anonymous access a public username can be set in environment config.
> +-- In Apache, using mod_env:
> +--
> +--    SetEnv REMOTE_USER gitweb
> +--
> +-- Gitolite requires HOME environment variable to work properly and point to valid Gitolite
> +-- environment. Since the user, under which web server process runs, usually does not have
> +-- this set, HOME should be explicitly configured and pointed to valid gitolite setup.
> +-- In Apache, using mod_env:
> +--
> +--    SetEnv HOME /path/to/gitolite/home
> +
> +
> +local git = {}
> +local http = {}
> +local repos = {}
> +local action = nil
> +
> +function action_init()
> +	-- Anonymous access, cancel repo list building
> +	if git.user == nil or git.user == "" then return end
> +	
> +	local handle = io.popen("gitolite list-phy-repos | gitolite access % " .. git.user .. " R any")
> +	
> +	while true do
> +		local repo = handle:read()
> +		if repo == nil then break end
> +		
> +		-- Skip DENIED repos
> +		if not string.find(repo, "DENIED") then
> +			-- Gitolite returns string: <repo>\t<user>\t<refs>
> +			-- We are interested only in the first field for now
> +			-- Append .git extension since Gitolite does not and cgit repo name has it
> +			local name = string.sub(repo, 0, string.find(repo, "\t") - 1) .. ".git"
> +			repos[name] = 1 -- Authorize flag is > 0
> +		end
> +	end
> +	
> +	handle:close()
> +end
> +
> +function action_filter()
> +	-- Return > 0 if access is authorized
> +	return repos[git.repo]
> +end
> +
> +local actions = {}
> +actions["init"] = action_init;
> +actions["filter"] = action_filter;
> +
> +function filter_open(...)
> +	action = actions[select(1, ...)]
> +	
> +	git["repo"] = select(2, ...)
> +	git["user"] = select(3, ...)
> +	
> +	http["server"] = select(4, ...)
> +	http["path"] = select(5, ...)
> +end
> +
> +function filter_close()
> +	return action()
> +end
> +
> diff --git a/scan-tree.c b/scan-tree.c
> index e17bca9..7490e74 100644
> --- a/scan-tree.c
> +++ b/scan-tree.c
> @@ -74,6 +74,14 @@ static char *xstrrchr(char *s, char *from, int c)
>  	return from < s ? NULL : from;
>  }
>  
> +static int open_project_filter(const char *action, const char *repo) {
> +	return cgit_open_filter(ctx.cfg.project_filter, action, repo,
> +			ctx.env.remote_user ? ctx.env.remote_user : "",
> +			ctx.env.server_name ? ctx.env.server_name : "",
> +			ctx.env.path_info ? ctx.env.path_info : ""
> +	);
> +}
> +
>  static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
>  {
>  	struct stat st;
> @@ -115,6 +123,11 @@ static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
>  	else if (rel.len && rel.buf[rel.len - 1] == '/')
>  		strbuf_setlen(&rel, rel.len - 1);
>  
> +	if(ctx.cfg.project_filter) {
> +		if(open_project_filter("filter", rel.buf)) return;
> +		if(cgit_close_filter(ctx.cfg.project_filter) < 1) return;
> +	}
> +
>  	repo = cgit_add_repo(rel.buf);
>  	config_fn = fn;
>  	if (ctx.cfg.enable_git_config) {
> @@ -261,6 +274,11 @@ void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn
>  
>  void scan_tree(const char *path, repo_config_fn fn)
>  {
> +	if (ctx.cfg.project_filter) {
> +		open_project_filter("init", path);
> +		cgit_close_filter(ctx.cfg.project_filter);
> +	}
> +
>  	if (ctx.cfg.project_list) {
>  		scan_projects(path, ctx.cfg.project_list, fn);
>  		return;
> -- 
> 2.1.4
> 
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