X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/488a214a81a25c6397c56822ed1713f51dddc520..50d5af3adcdd90424b70e9472af24356ed50aa9b:/cgit.c

diff --git a/cgit.c b/cgit.c
index 411e421..a792fe4 100644
--- a/cgit.c
+++ b/cgit.c
@@ -17,6 +17,31 @@
 
 const char *cgit_version = CGIT_VERSION;
 
+void add_mimetype(const char *name, const char *value)
+{
+	struct string_list_item *item;
+
+	item = string_list_insert(xstrdup(name), &ctx.cfg.mimetypes);
+	item->util = xstrdup(value);
+}
+
+struct cgit_filter *new_filter(const char *cmd, int extra_args)
+{
+	struct cgit_filter *f;
+
+	if (!cmd || !cmd[0])
+		return NULL;
+
+	f = xmalloc(sizeof(struct cgit_filter));
+	f->cmd = xstrdup(cmd);
+	f->argv = xmalloc((2 + extra_args) * sizeof(char *));
+	f->argv[0] = f->cmd;
+	f->argv[1] = NULL;
+	return f;
+}
+
+static void process_cached_repolist(const char *path);
+
 void config_cb(const char *name, const char *value)
 {
 	if (!strcmp(name, "root-title"))
@@ -31,6 +56,8 @@ void config_cb(const char *name, const char *value)
 		ctx.cfg.favicon = xstrdup(value);
 	else if (!strcmp(name, "footer"))
 		ctx.cfg.footer = xstrdup(value);
+	else if (!strcmp(name, "head-include"))
+		ctx.cfg.head_include = xstrdup(value);
 	else if (!strcmp(name, "header"))
 		ctx.cfg.header = xstrdup(value);
 	else if (!strcmp(name, "logo"))
@@ -49,6 +76,10 @@ void config_cb(const char *name, const char *value)
 			ctx.cfg.virtual_root = "";
 	} else if (!strcmp(name, "nocache"))
 		ctx.cfg.nocache = atoi(value);
+	else if (!strcmp(name, "noplainemail"))
+		ctx.cfg.noplainemail = atoi(value);
+	else if (!strcmp(name, "noheader"))
+		ctx.cfg.noheader = atoi(value);
 	else if (!strcmp(name, "snapshots"))
 		ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
 	else if (!strcmp(name, "enable-index-links"))
@@ -67,10 +98,18 @@ void config_cb(const char *name, const char *value)
 		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-scanrc-ttl"))
+		ctx.cfg.cache_scanrc_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, "about-filter"))
+		ctx.cfg.about_filter = new_filter(value, 0);
+	else if (!strcmp(name, "commit-filter"))
+		ctx.cfg.commit_filter = new_filter(value, 0);
+	else if (!strcmp(name, "embedded"))
+		ctx.cfg.embedded = atoi(value);
 	else if (!strcmp(name, "max-message-length"))
 		ctx.cfg.max_msg_len = atoi(value);
 	else if (!strcmp(name, "max-repodesc-length"))
@@ -79,6 +118,13 @@ void config_cb(const char *name, const char *value)
 		ctx.cfg.max_repo_count = atoi(value);
 	else if (!strcmp(name, "max-commit-count"))
 		ctx.cfg.max_commit_count = atoi(value);
+	else if (!strcmp(name, "scan-path"))
+		if (!ctx.cfg.nocache && ctx.cfg.cache_size)
+			process_cached_repolist(value);
+		else
+			scan_tree(value);
+	else if (!strcmp(name, "source-filter"))
+		ctx.cfg.source_filter = new_filter(value, 1);
 	else if (!strcmp(name, "summary-log"))
 		ctx.cfg.summary_log = atoi(value);
 	else if (!strcmp(name, "summary-branches"))
@@ -95,6 +141,8 @@ void config_cb(const char *name, const char *value)
 		ctx.cfg.clone_prefix = xstrdup(value);
 	else if (!strcmp(name, "local-time"))
 		ctx.cfg.local_time = atoi(value);
+	else if (!prefixcmp(name, "mimetype."))
+		add_mimetype(name + 9, value);
 	else if (!strcmp(name, "repo.group"))
 		ctx.cfg.repo_group = xstrdup(value);
 	else if (!strcmp(name, "repo.url"))
@@ -121,6 +169,12 @@ void config_cb(const char *name, const char *value)
 		ctx.repo->max_stats = cgit_find_stats_period(value, NULL);
 	else if (ctx.repo && !strcmp(name, "repo.module-link"))
 		ctx.repo->module_link= xstrdup(value);
+	else if (ctx.repo && !strcmp(name, "repo.about-filter"))
+		ctx.repo->about_filter = new_filter(value, 0);
+	else if (ctx.repo && !strcmp(name, "repo.commit-filter"))
+		ctx.repo->commit_filter = new_filter(value, 0);
+	else if (ctx.repo && !strcmp(name, "repo.source-filter"))
+		ctx.repo->source_filter = new_filter(value, 1);
 	else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
 		if (*value == '/')
 			ctx.repo->readme = xstrdup(value);
@@ -132,6 +186,9 @@ void config_cb(const char *name, const char *value)
 
 static void querystring_cb(const char *name, const char *value)
 {
+	if (!value)
+		value = "";
+
 	if (!strcmp(name,"r")) {
 		ctx.qry.repo = xstrdup(value);
 		ctx.repo = cgit_get_repoinfo(value);
@@ -170,6 +227,11 @@ static void querystring_cb(const char *name, const char *value)
 	}
 }
 
+char *xstrdupn(const char *str)
+{
+	return (str ? xstrdup(str) : NULL);
+}
+
 static void prepare_context(struct cgit_context *ctx)
 {
 	memset(ctx, 0, sizeof(ctx));
@@ -181,9 +243,10 @@ static void prepare_context(struct cgit_context *ctx)
 	ctx->cfg.cache_repo_ttl = 5;
 	ctx->cfg.cache_root = CGIT_CACHE_ROOT;
 	ctx->cfg.cache_root_ttl = 5;
+	ctx->cfg.cache_scanrc_ttl = 15;
 	ctx->cfg.cache_static_ttl = -1;
 	ctx->cfg.css = "/cgit.css";
-	ctx->cfg.logo = "/git-logo.png";
+	ctx->cfg.logo = "/cgit.png";
 	ctx->cfg.local_time = 0;
 	ctx->cfg.max_repo_count = 50;
 	ctx->cfg.max_commit_count = 50;
@@ -200,6 +263,16 @@ static void prepare_context(struct cgit_context *ctx)
 	ctx->cfg.summary_branches = 10;
 	ctx->cfg.summary_log = 10;
 	ctx->cfg.summary_tags = 10;
+	ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
+	ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
+	ctx->env.https = xstrdupn(getenv("HTTPS"));
+	ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
+	ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
+	ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
+	ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
+	ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
+	ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
+	ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
 	ctx->page.mimetype = "text/html";
 	ctx->page.charset = PAGE_ENCODING;
 	ctx->page.filename = NULL;
@@ -207,6 +280,13 @@ static void prepare_context(struct cgit_context *ctx)
 	ctx->page.modified = time(NULL);
 	ctx->page.expires = ctx->page.modified;
 	ctx->page.etag = NULL;
+	memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
+	if (ctx->env.script_name)
+		ctx->cfg.script_name = ctx->env.script_name;
+	if (ctx->env.query_string)
+		ctx->qry.raw = ctx->env.query_string;
+	if (!ctx->env.cgit_config)
+		ctx->env.cgit_config = CGIT_CONFIG;
 }
 
 struct refmatch {
@@ -286,6 +366,8 @@ static int prepare_repo_cmd(struct cgit_context *ctx)
 	if (get_sha1(ctx->qry.head, sha1)) {
 		tmp = xstrdup(ctx->qry.head);
 		ctx->qry.head = ctx->repo->defbranch;
+		ctx->page.status = 404;
+		ctx->page.statusmsg = "not found";
 		cgit_print_http_headers(ctx);
 		cgit_print_docstart(ctx);
 		cgit_print_pageheader(ctx);
@@ -342,28 +424,93 @@ int cmp_repos(const void *a, const void *b)
 	return strcmp(ra->url, rb->url);
 }
 
-void print_repo(struct cgit_repo *repo)
+void print_repo(FILE *f, struct cgit_repo *repo)
 {
-	printf("repo.url=%s\n", repo->url);
-	printf("repo.name=%s\n", repo->name);
-	printf("repo.path=%s\n", repo->path);
+	fprintf(f, "repo.url=%s\n", repo->url);
+	fprintf(f, "repo.name=%s\n", repo->name);
+	fprintf(f, "repo.path=%s\n", repo->path);
 	if (repo->owner)
-		printf("repo.owner=%s\n", repo->owner);
+		fprintf(f, "repo.owner=%s\n", repo->owner);
 	if (repo->desc)
-		printf("repo.desc=%s\n", repo->desc);
+		fprintf(f, "repo.desc=%s\n", repo->desc);
 	if (repo->readme)
-		printf("repo.readme=%s\n", repo->readme);
-	printf("\n");
+		fprintf(f, "repo.readme=%s\n", repo->readme);
+	fprintf(f, "\n");
 }
 
-void print_repolist(struct cgit_repolist *list)
+void print_repolist(FILE *f, struct cgit_repolist *list, int start)
 {
 	int i;
 
-	for(i = 0; i < list->count; i++)
-		print_repo(&list->repos[i]);
+	for(i = start; i < list->count; i++)
+		print_repo(f, &list->repos[i]);
 }
 
+/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
+ * and return 0 on success.
+ */
+static int generate_cached_repolist(const char *path, const char *cached_rc)
+{
+	char *locked_rc;
+	int idx;
+	FILE *f;
+
+	locked_rc = xstrdup(fmt("%s.lock", cached_rc));
+	f = fopen(locked_rc, "wx");
+	if (!f) {
+		/* Inform about the error unless the lockfile already existed,
+		 * since that only means we've got concurrent requests.
+		 */
+		if (errno != EEXIST)
+			fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
+				locked_rc, strerror(errno), errno);
+		return errno;
+	}
+	idx = cgit_repolist.count;
+	scan_tree(path);
+	print_repolist(f, &cgit_repolist, idx);
+	if (rename(locked_rc, cached_rc))
+		fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
+			locked_rc, cached_rc, strerror(errno), errno);
+	fclose(f);
+	return 0;
+}
+
+static void process_cached_repolist(const char *path)
+{
+	struct stat st;
+	char *cached_rc;
+	time_t age;
+
+	cached_rc = xstrdup(fmt("%s/rc-%8x", ctx.cfg.cache_root,
+		hash_str(path)));
+
+	if (stat(cached_rc, &st)) {
+		/* Nothing is cached, we need to scan without forking. And
+		 * if we fail to generate a cached repolist, we need to
+		 * invoke scan_tree manually.
+		 */
+		if (generate_cached_repolist(path, cached_rc))
+			scan_tree(path);
+		return;
+	}
+
+	parse_configfile(cached_rc, config_cb);
+
+	/* If the cached configfile hasn't expired, lets exit now */
+	age = time(NULL) - st.st_mtime;
+	if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
+		return;
+
+	/* The cached repolist has been parsed, but it was old. So lets
+	 * rescan the specified path and generate a new cached repolist
+	 * in a child-process to avoid latency for the current request.
+	 */
+	if (fork())
+		return;
+
+	exit(generate_cached_repolist(path, cached_rc));
+}
 
 static void cgit_parse_args(int argc, const char **argv)
 {
@@ -377,6 +524,9 @@ static void cgit_parse_args(int argc, const char **argv)
 		if (!strcmp(argv[i], "--nocache")) {
 			ctx.cfg.nocache = 1;
 		}
+		if (!strcmp(argv[i], "--nohttp")) {
+			ctx.env.no_http = "1";
+		}
 		if (!strncmp(argv[i], "--query=", 8)) {
 			ctx.qry.raw = xstrdup(argv[i]+8);
 		}
@@ -397,7 +547,8 @@ static void cgit_parse_args(int argc, const char **argv)
 		if (!strncmp(argv[i], "--ofs=", 6)) {
 			ctx.qry.ofs = atoi(argv[i]+6);
 		}
-		if (!strncmp(argv[i], "--scan-tree=", 12)) {
+		if (!strncmp(argv[i], "--scan-tree=", 12) ||
+		    !strncmp(argv[i], "--scan-path=", 12)) {
 			scan++;
 			scan_tree(argv[i] + 12);
 		}
@@ -405,7 +556,7 @@ static void cgit_parse_args(int argc, const char **argv)
 	if (scan) {
 		qsort(cgit_repolist.repos, cgit_repolist.count,
 			sizeof(struct cgit_repo), cmp_repos);
-		print_repolist(&cgit_repolist);
+		print_repolist(stdout, &cgit_repolist, 0);
 		exit(0);
 	}
 }
@@ -429,7 +580,6 @@ static int calc_ttl()
 
 int main(int argc, const char **argv)
 {
-	const char *cgit_config_env = getenv("CGIT_CONFIG");
 	const char *path;
 	char *qry;
 	int err, ttl;
@@ -439,13 +589,8 @@ int main(int argc, const char **argv)
 	cgit_repolist.count = 0;
 	cgit_repolist.repos = NULL;
 
-	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);
-	parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
-			 config_cb);
+	parse_configfile(ctx.env.cgit_config, config_cb);
 	ctx.repo = NULL;
 	http_parse_querystring(ctx.qry.raw, querystring_cb);
 
@@ -460,7 +605,7 @@ int main(int argc, const char **argv)
 	 * urls without the need for rewriterules in the webserver (as
 	 * long as PATH_INFO is included in the cache lookup key).
 	 */
-	path = getenv("PATH_INFO");
+	path = ctx.env.path_info;
 	if (!ctx.qry.url && path) {
 		if (path[0] == '/')
 			path++;
@@ -470,12 +615,14 @@ int main(int argc, const char **argv)
 			ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
 			free(qry);
 		} else
-			ctx.qry.raw = ctx.qry.url;
+			ctx.qry.raw = xstrdup(ctx.qry.url);
 		cgit_parse_url(ctx.qry.url);
 	}
 
 	ttl = calc_ttl();
 	ctx.page.expires += ttl*60;
+	if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
+		ctx.cfg.nocache = 1;
 	if (ctx.cfg.nocache)
 		ctx.cfg.cache_size = 0;
 	err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,