X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/a6a11125283cd159bbd22e4e3c619bccad1162df..f3c1a187fe2bc33f8423cd535d5045899699995b:/cgit.c

diff --git a/cgit.c b/cgit.c
index 5dcba76..d0f6905 100644
--- a/cgit.c
+++ b/cgit.c
@@ -7,65 +7,227 @@
  */
 
 #include "cgit.h"
+#include "cmd.h"
 
-const char cgit_version[] = CGIT_VERSION;
+static int cgit_prepare_cache(struct cacheitem *item)
+{
+	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;
+	}
+
+	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)
 {
-	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, 0);
-		cgit_print_error(fmt("Unable to scan repository: %s",
-				     strerror(errno)));
+	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) {
+		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;
+	}
+
+	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_http_headers(&ctx);
+		cgit_print_docstart(&ctx);
+		cgit_print_pageheader(&ctx);
+		cgit_print_error("Repository seems to be empty");
 		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);
-	int show_search = 0;
-	if (cgit_query_page && !strcmp(cgit_query_page, "log"))
-		show_search = 1;
-	cgit_print_docstart(title, item);
-	cgit_print_pageheader(title, show_search);
-	if (!cgit_query_page) {
+
+	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;
+	}
+
+	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_http_headers(&ctx);
+	cgit_print_docstart(&ctx);
+	if (!cgit_cmd) {
+		cgit_print_pageheader(&ctx);
 		cgit_print_summary();
-	} else if (!strcmp(cgit_query_page, "log")) {
-		cgit_print_log(cgit_query_head, cgit_query_ofs, 100, cgit_query_search);
-	} else if (!strcmp(cgit_query_page, "tree")) {
-		cgit_print_tree(cgit_query_sha1);
-	} else if (!strcmp(cgit_query_page, "commit")) {
-		cgit_print_commit(cgit_query_sha1);
-	} else if (!strcmp(cgit_query_page, "view")) {
-		cgit_print_view(cgit_query_sha1);
-	} else if (!strcmp(cgit_query_page, "diff")) {
-		cgit_print_diff(cgit_query_sha1, cgit_query_sha2);
+		cgit_print_docend();
+		return;
+	}
+
+	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 void cgit_fill_cache(struct cacheitem *item)
+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)
 {
-	static char buf[PATH_MAX];
+	int stdout2;
 
-	getcwd(buf, sizeof(buf));
-	htmlfd = item->fd;
-	item->st.st_mtime = time(NULL);
-	if (cgit_query_repo)
+	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);
-	chdir(buf);
+
+	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));
 	}
@@ -75,14 +237,14 @@ static void cgit_check_cache(struct cacheitem *item)
 			goto top;
 		}
 		if (!cache_exist(item)) {
-			cgit_fill_cache(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);
+			cgit_fill_cache(item, 1);
 			cache_unlock(item);
 		} else {
 			cache_cancel_lock(item);
@@ -110,34 +272,31 @@ static void cgit_parse_args(int argc, const char **argv)
 	int i;
 
 	for (i = 1; i < argc; i++) {
-		if (!strncmp(argv[i], "--root=", 7)) {
-			cgit_root = xstrdup(argv[i]+7);
-		}
 		if (!strncmp(argv[i], "--cache=", 8)) {
-			cgit_cache_root = xstrdup(argv[i]+8);
+			ctx.cfg.cache_root = xstrdup(argv[i]+8);
 		}
 		if (!strcmp(argv[i], "--nocache")) {
-			cgit_nocache = 1;
+			ctx.cfg.nocache = 1;
 		}
 		if (!strncmp(argv[i], "--query=", 8)) {
-			cgit_querystring = xstrdup(argv[i]+8);
+			ctx.qry.raw = xstrdup(argv[i]+8);
 		}
 		if (!strncmp(argv[i], "--repo=", 7)) {
-			cgit_query_repo = xstrdup(argv[i]+7);
+			ctx.qry.repo = xstrdup(argv[i]+7);
 		}
 		if (!strncmp(argv[i], "--page=", 7)) {
-			cgit_query_page = xstrdup(argv[i]+7);
+			ctx.qry.page = xstrdup(argv[i]+7);
 		}
 		if (!strncmp(argv[i], "--head=", 7)) {
-			cgit_query_head = xstrdup(argv[i]+7);
-			cgit_query_has_symref = 1;
+			ctx.qry.head = xstrdup(argv[i]+7);
+			ctx.qry.has_symref = 1;
 		}
 		if (!strncmp(argv[i], "--sha1=", 7)) {
-			cgit_query_sha1 = xstrdup(argv[i]+7);
-			cgit_query_has_sha1 = 1;
+			ctx.qry.sha1 = xstrdup(argv[i]+7);
+			ctx.qry.has_sha1 = 1;
 		}
 		if (!strncmp(argv[i], "--ofs=", 6)) {
-			cgit_query_ofs = atoi(argv[i]+6);
+			ctx.qry.ofs = atoi(argv[i]+6);
 		}
 	}
 }
@@ -145,17 +304,26 @@ static void cgit_parse_args(int argc, const char **argv)
 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("/etc/cgitrc", cgit_global_config_cb);
+	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"))
-		cgit_querystring = xstrdup(getenv("QUERY_STRING"));
+		ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));
 	cgit_parse_args(argc, argv);
-	cgit_parse_query(cgit_querystring, cgit_querystring_cb);
-
-	if (cgit_nocache) {
-		cache_prepare(&item);
-		item.fd = STDOUT_FILENO;
-		cgit_fill_cache(&item);
+	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);