X-Git-Url: https://git.cameronkatri.com/cgit.git/blobdiff_plain/5a106eb09b9b5e189b96cc736046a92b054f6c7f..20a33548b9a87a6eb23162ee5d137daa46d78613:/cgit.c

diff --git a/cgit.c b/cgit.c
index 5438fa1..1f46e0d 100644
--- a/cgit.c
+++ b/cgit.c
@@ -7,378 +7,352 @@
  */
 
 #include "cgit.h"
+#include "cache.h"
+#include "cmd.h"
+#include "configfile.h"
+#include "ui-shared.h"
 
-const char cgit_version[] = CGIT_VERSION;
+const char *cgit_version = CGIT_VERSION;
 
-int htmlfd = 0;
-
-char *cgit_root         = "/usr/src/git";
-char *cgit_root_title   = "Git repository browser";
-char *cgit_css          = "/cgit.css";
-char *cgit_logo         = "/git-logo.png";
-char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
-char *cgit_virtual_root = NULL;
-
-char *cgit_cache_root   = "/var/cache/cgit";
-
-int cgit_max_lock_attempts     =  5;
-int cgit_cache_root_ttl        =  5;
-int cgit_cache_repo_ttl        =  5;
-int cgit_cache_dynamic_ttl     =  5;
-int cgit_cache_static_ttl      = -1;
-int cgit_cache_max_create_time =  5;
-
-char *cgit_repo_name    = NULL;
-char *cgit_repo_desc    = NULL;
-char *cgit_repo_owner   = NULL;
-
-int cgit_query_has_symref = 0;
-int cgit_query_has_sha1   = 0;
-
-char *cgit_querystring  = NULL;
-char *cgit_query_repo   = NULL;
-char *cgit_query_page   = NULL;
-char *cgit_query_head   = NULL;
-char *cgit_query_sha1   = NULL;
-
-struct cacheitem cacheitem;
-
-void cgit_global_config_cb(const char *name, const char *value)
+void config_cb(const char *name, const char *value)
 {
-	if (!strcmp(name, "root"))
-		cgit_root = xstrdup(value);
-	else if (!strcmp(name, "root-title"))
-		cgit_root_title = xstrdup(value);
+	if (!strcmp(name, "root-title"))
+		ctx.cfg.root_title = xstrdup(value);
 	else if (!strcmp(name, "css"))
-		cgit_css = xstrdup(value);
+		ctx.cfg.css = xstrdup(value);
 	else if (!strcmp(name, "logo"))
-		cgit_logo = xstrdup(value);
+		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"))
-		cgit_logo_link = xstrdup(value);
-	else if (!strcmp(name, "virtual-root"))
-		cgit_virtual_root = xstrdup(value);
+		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 = cgit_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"))
+		parse_configfile(value, config_cb);
 }
 
-void cgit_repo_config_cb(const char *name, const char *value)
+static void querystring_cb(const char *name, const char *value)
 {
-	if (!strcmp(name, "name"))
-		cgit_repo_name = xstrdup(value);
-	else if (!strcmp(name, "desc"))
-		cgit_repo_desc = xstrdup(value);
-	else if (!strcmp(name, "owner"))
-		cgit_repo_owner = xstrdup(value);
-}
-
-void cgit_querystring_cb(const char *name, const char *value)
-{
-	if (!strcmp(name,"r"))
-		cgit_query_repo = xstrdup(value);
-	else if (!strcmp(name, "p"))
-		cgit_query_page = xstrdup(value);
-	else if (!strcmp(name, "h")) {
-		cgit_query_head = xstrdup(value);
-		cgit_query_has_symref = 1;
+	if (!strcmp(name,"r")) {
+		ctx.qry.repo = xstrdup(value);
+		ctx.repo = cgit_get_repoinfo(value);
+	} else if (!strcmp(name, "p")) {
+		ctx.qry.page = xstrdup(value);
+	} else if (!strcmp(name, "url")) {
+		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")) {
-		cgit_query_sha1 = xstrdup(value);
-		cgit_query_has_sha1 = 1;
+		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);
 	}
 }
 
-char *cgit_repourl(const char *reponame)
+static void prepare_context(struct cgit_context *ctx)
 {
-	if (cgit_virtual_root) {
-		return fmt("%s/%s/", cgit_virtual_root, reponame);
-	} else {
-		return fmt("?r=%s", reponame);
-	}
+	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;
 }
 
-char *cgit_pageurl(const char *reponame, const char *pagename, 
-		   const char *query)
+static int cgit_prepare_cache(struct cacheitem *item)
 {
-	if (cgit_virtual_root) {
-		return fmt("%s/%s/%s/?%s", cgit_virtual_root, reponame, 
-			   pagename, query);
-	} else {
-		return fmt("?r=%s&p=%s&%s", reponame, pagename, query);
-	}
-}
-
-static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
-				int flags, void *cb_data)
-{
-	struct commit *commit;
-	char buf[256], *url;
-
-	commit = lookup_commit(sha1);
-	if (commit && !parse_commit(commit)){
-		html("<tr><td>");
-		url = cgit_pageurl(cgit_query_repo, "log", 
-				   fmt("h=%s", refname));
-		html_link_open(url, NULL, NULL);
-		strncpy(buf, refname, sizeof(buf));
-		html_txt(buf);
-		html_link_close();
-		html("</td><td>");
-		pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0, buf,
-				    sizeof(buf), 0, NULL, NULL, 0);
-		html_txt(buf);
-		html("</td></tr>\n");
-	} else {
-		html("<tr><td>");
-		html_txt(buf);
-		html("</td><td>");
-		htmlf("*** bad ref %s", sha1_to_hex(sha1));
-		html("</td></tr>\n");
+	if (!ctx.repo && ctx.qry.repo) {
+		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;
 	}
-	return 0;
-}
 
-static void cgit_print_repolist(struct cacheitem *item)
-{
-	DIR *d;
-	struct dirent *de;
-	struct stat st;
-	char *name;
-
-	chdir(cgit_root);
-	cgit_print_docstart(cgit_root_title, item);
-	cgit_print_pageheader(cgit_root_title);
-
-	if (!(d = opendir("."))) {
-		cgit_print_error(fmt("Unable to scan repository directory: %s",
-				     strerror(errno)));
-		cgit_print_docend();
-		return;
+	if (!ctx.repo) {
+		item->name = xstrdup(fmt("%s/index.html", ctx.cfg.cache_root));
+		item->ttl = ctx.cfg.cache_root_ttl;
+		return 1;
 	}
 
-	html("<h2>Repositories</h2>\n");
-	html("<table class='list'>");
-	html("<tr><th>Name</th><th>Description</th><th>Owner</th></tr>\n");
-	while ((de = readdir(d)) != NULL) {
-		if (de->d_name[0] == '.')
-			continue;
-		if (stat(de->d_name, &st) < 0)
-			continue;
-		if (!S_ISDIR(st.st_mode))
-			continue;
-
-		cgit_repo_name = cgit_repo_desc = cgit_repo_owner = NULL;
-		name = fmt("%s/info/cgit", de->d_name);
-		if (cgit_read_config(name, cgit_repo_config_cb))
-			continue;
-
-		html("<tr><td>");
-		html_link_open(cgit_repourl(de->d_name), NULL, NULL);
-		html_txt(cgit_repo_name);
-		html_link_close();
-		html("</td><td>");
-		html_txt(cgit_repo_desc);
-		html("</td><td>");
-		html_txt(cgit_repo_owner);
-		html("</td></tr>\n");
+	if (!ctx.qry.page) {
+		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;
 	}
-	closedir(d);
-	html("</table>");
-	cgit_print_docend();
+	return 1;
 }
 
-static void cgit_print_branches()
+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)
 {
-	html("<table class='list'>");
-	html("<tr><th>Branch name</th><th>Head commit</th></tr>\n");
-	for_each_branch_ref(cgit_print_branch_cb, NULL);
-	html("</table>");
+	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;
 }
 
-static int get_one_line(char *txt)
+char *find_default_branch(struct cgit_repo *repo)
 {
-	char *t;
-
-	for(t=txt; *t != '\n' && t != '\0'; t++)
-		;
-	*t = '\0';
-	return t-txt-1;
+	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_commit_shortlog(struct commit *commit)
+static int prepare_repo_cmd(struct cgit_context *ctx)
 {
-	char *h, *t, *p; 
-	char *tree = NULL, *author = NULL, *subject = NULL;
-	int len;
-	time_t sec;
-	struct tm *time;
-	char buf[32];
-
-	h = t = commit->buffer;
-	
-	if (strncmp(h, "tree ", 5))
-		die("Bad commit format: %s", 
-		    sha1_to_hex(commit->object.sha1));
-	
-	len = get_one_line(h);
-	tree = h+5;
-	h += len + 2;
-
-	while (!strncmp(h, "parent ", 7))
-		h += get_one_line(h) + 2;
-	
-	if (!strncmp(h, "author ", 7)) {
-		author = h+7;
-		h += get_one_line(h) + 2;
-		t = author;
-		while(t!=h && *t!='<') 
-			t++;
-		*t='\0';
-		p = t;
-		while(--t!=author && *t==' ')
-			*t='\0';
-		while(++p!=h && *p!='>')
-			;
-		while(++p!=h && !isdigit(*p))
-			;
-
-		t = p;
-		while(++p && isdigit(*p))
-			;
-		*p = '\0';
-		sec = atoi(t);
-		time = gmtime(&sec);
+	char *tmp;
+	unsigned char sha1[20];
+	int nongit = 0;
+
+	setenv("GIT_DIR", ctx->repo->path, 1);
+	setup_git_directory_gently(&nongit);
+	if (nongit) {
+		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_http_headers(ctx);
+		cgit_print_docstart(ctx);
+		cgit_print_pageheader(ctx);
+		cgit_print_error(tmp);
+		cgit_print_docend();
+		return 1;
 	}
+	ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
 
-	while((len = get_one_line(h)) > 0)
-		h += len+2;
-
-	h++;
-	len = get_one_line(h);
-
-	subject = h;
-
-	html("<tr><td>");
-	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
-	html_txt(buf);
-	html("</td><td>");
-	char *qry = fmt("id=%s", sha1_to_hex(commit->object.sha1));
-	char *url = cgit_pageurl(cgit_query_repo, "view", qry);
-	html_link_open(url, NULL, NULL);
-	html_txt(subject);
-	html_link_close();
-	html("</td><td>");
-	html_txt(author);
-	html("</td></tr>\n");
-}
+	if (!ctx->qry.head) {
+		ctx->qry.head = xstrdup(find_default_branch(ctx->repo));
+		ctx->repo->defbranch = ctx->qry.head;
+	}
 
-static void cgit_print_log(const char *tip, int ofs, int cnt)
-{
-	struct rev_info rev;
-	struct commit *commit;
-	const char *argv[2] = {NULL, tip};
-	int n = 0;
-	
-	init_revisions(&rev, NULL);
-	rev.abbrev = DEFAULT_ABBREV;
-	rev.commit_format = CMIT_FMT_DEFAULT;
-	rev.verbose_header = 1;
-	rev.show_root_diff = 0;
-	setup_revisions(2, argv, &rev, NULL);
-	prepare_revision_walk(&rev);
-
-	html("<h2>Log</h2>");
-	html("<table class='list'>");
-	html("<tr><th>Date</th><th>Message</th><th>Author</th></tr>\n");
-	while ((commit = get_revision(&rev)) != NULL && n++ < 100) {
-		cgit_print_commit_shortlog(commit);
-		free(commit->buffer);
-		commit->buffer = NULL;
-		free_commit_list(commit->parents);
-		commit->parents = NULL;
+	if (!ctx->qry.head) {
+		cgit_print_http_headers(ctx);
+		cgit_print_docstart(ctx);
+		cgit_print_pageheader(ctx);
+		cgit_print_error("Repository seems to be empty");
+		cgit_print_docend();
+		return 1;
 	}
-	html("</table>\n");
-}
 
-static void cgit_print_repo_summary()
-{
-	html("<h2>");
-	html_txt("Repo summary page");
-	html("</h2>");
-	cgit_print_branches();
+	if (get_sha1(ctx->qry.head, sha1)) {
+		tmp = xstrdup(ctx->qry.head);
+		ctx->qry.head = ctx->repo->defbranch;
+		cgit_print_http_headers(ctx);
+		cgit_print_docstart(ctx);
+		cgit_print_pageheader(ctx);
+		cgit_print_error(fmt("Invalid branch: %s", tmp));
+		cgit_print_docend();
+		return 1;
+	}
+	return 0;
 }
 
-static void cgit_print_object(char *hex)
+static void process_request(struct cgit_context *ctx)
 {
-	unsigned char sha1[20];
-	//struct object *object;
-	char type[20];
-	unsigned char *buf;
-	unsigned long size;
-
-	if (get_sha1_hex(hex, sha1)){
-		cgit_print_error(fmt("Bad hex value: %s", hex));
-	        return;
-	}
-
-	if (sha1_object_info(sha1, type, NULL)){
-		cgit_print_error("Bad object name");
+	struct cgit_cmd *cmd;
+
+	cmd = cgit_get_cmd(ctx);
+	if (!cmd) {
+		ctx->page.title = "cgit error";
+		ctx->repo = NULL;
+		cgit_print_http_headers(ctx);
+		cgit_print_docstart(ctx);
+		cgit_print_pageheader(ctx);
+		cgit_print_error("Invalid request");
+		cgit_print_docend();
 		return;
 	}
 
-	buf = read_sha1_file(sha1, type, &size);
-	if (!buf) {
-		cgit_print_error("Error reading object");
+	if (cmd->want_repo && prepare_repo_cmd(ctx))
 		return;
+
+	if (cmd->want_layout) {
+		cgit_print_http_headers(ctx);
+		cgit_print_docstart(ctx);
+		cgit_print_pageheader(ctx);
 	}
 
-	buf[size] = '\0';
-	html("<h2>Object view</h2>");
-	htmlf("sha1=%s<br/>type=%s<br/>size=%i<br/>", hex, type, size);
-	html("<pre>");
-	html_txt(buf);
-	html("</pre>");
-}
+	cmd->fn(ctx);
 
-static void cgit_print_repo_page(struct cacheitem *item)
-{
-	if (chdir(fmt("%s/%s", cgit_root, cgit_query_repo)) || 
-	    cgit_read_config("info/cgit", cgit_repo_config_cb)) {
-		char *title = fmt("%s - %s", cgit_root_title, "Bad request");
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title);
-		cgit_print_error(fmt("Unable to scan repository: %s",
-				     strerror(errno)));
+	if (cmd->want_layout)
 		cgit_print_docend();
-		return;
-	}
-	setenv("GIT_DIR", fmt("%s/%s", cgit_root, cgit_query_repo), 1);
-	char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
-	cgit_print_docstart(title, item);
-	cgit_print_pageheader(title);
-	if (!cgit_query_page)
-		cgit_print_repo_summary();
-	else if (!strcmp(cgit_query_page, "log")) {
-		cgit_print_log(cgit_query_head, 0, 100);
-	} else if (!strcmp(cgit_query_page, "view")) {
-		cgit_print_object(cgit_query_sha1);
-	}
-	cgit_print_docend();
 }
 
-static void cgit_fill_cache(struct cacheitem *item)
+static long ttl_seconds(long ttl)
 {
-	htmlfd = item->fd;
-	item->st.st_mtime = time(NULL);
-	if (cgit_query_repo)
-		cgit_print_repo_page(item);
+	if (ttl<0)
+		return 60 * 60 * 24 * 365;
 	else
-		cgit_print_repolist(item);
+		return ttl * 60;
 }
 
-static void cgit_refresh_cache(struct cacheitem *item)
+static void cgit_fill_cache(struct cacheitem *item, int use_cache)
+{
+	int stdout2;
+
+	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);
+	process_request(&ctx);
+
+	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;
 
-	cache_prepare(item);
  top:
-	if (++i > cgit_max_lock_attempts) {
+	if (++i > ctx.cfg.max_lock_attempts) {
 		die("cgit_refresh_cache: unable to lock %s: %s",
 		    item->name, strerror(errno));
 	}
@@ -387,13 +361,19 @@ static void cgit_refresh_cache(struct cacheitem *item)
 			sleep(1);
 			goto top;
 		}
-		if (!cache_exist(item))
-			cgit_fill_cache(item);
-		cache_unlock(item);
+		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);
-		cache_unlock(item);
+		if (cache_expired(item)) {
+			cgit_fill_cache(item, 1);
+			cache_unlock(item);
+		} else {
+			cache_cancel_lock(item);
+		}
 	}
 }
 
@@ -412,12 +392,66 @@ static void cgit_print_cache(struct cacheitem *item)
 	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)
 {
-	cgit_read_config("/etc/cgitrc", cgit_global_config_cb);
-	cgit_querystring = xstrdup(getenv("QUERY_STRING"));
-	cgit_parse_query(cgit_querystring, cgit_querystring_cb);
-	cgit_refresh_cache(&cacheitem);
-	cgit_print_cache(&cacheitem);
+	struct cacheitem item;
+	const char *cgit_config_env = getenv("CGIT_CONFIG");
+
+	prepare_context(&ctx);
+	item.st.st_mtime = time(NULL);
+	cgit_repolist.length = 0;
+	cgit_repolist.count = 0;
+	cgit_repolist.repos = NULL;
+
+	parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
+			 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, 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;
 }