X-Git-Url: https://git.cameronkatri.com/cgit.git/blobdiff_plain/b28b105ec172b258ae5d629381a5890697c2f938..f34478cbe0214a201e7ecef3e79ed6c957b7beee:/cgit.c

diff --git a/cgit.c b/cgit.c
index b282a67..79e0e43 100644
--- a/cgit.c
+++ b/cgit.c
@@ -7,134 +7,172 @@
  */
 
 #include "cgit.h"
+#include "cmd.h"
 
-const char cgit_version[] = CGIT_VERSION;
-
-
-static struct repoinfo *cgit_get_repoinfo(char *url)
+static int cgit_prepare_cache(struct cacheitem *item)
 {
-	int i;
-	struct repoinfo *repo;
+	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;
+	}
 
-	for (i=0; i<cgit_repolist.count; i++) {
-		repo = &cgit_repolist.repos[i];
-		if (!strcmp(repo->url, url))
-			return repo;
+	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 NULL;
+	return 1;
 }
 
+struct refmatch {
+	char *req_ref;
+	char *first_ref;
+	int match;
+};
 
-static int cgit_prepare_cache(struct cacheitem *item)
+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 int prepare_repo_cmd(struct cgit_context *ctx)
 {
-	if (!cgit_query_repo) {
-		item->name = xstrdup(fmt("%s/index.html", cgit_cache_root));
-		item->ttl = cgit_cache_root_ttl;
+	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;
 	}
-	cgit_repo = cgit_get_repoinfo(cgit_query_repo);
-	if (!cgit_repo) {
-		char *title = fmt("%s - %s", cgit_root_title, "Bad request");
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title, 0);
-		cgit_print_error(fmt("Unknown repo: %s", cgit_query_repo));
+	ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
+
+	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 0;
+		return 1;
 	}
 
-	if (!cgit_query_page) {
-		item->name = xstrdup(fmt("%s/%s/index.html", cgit_cache_root,
-			   cgit_repo->url));
-		item->ttl = cgit_cache_repo_ttl;
-	} else {
-		item->name = xstrdup(fmt("%s/%s/%s/%s.html", cgit_cache_root,
-			   cgit_repo->url, cgit_query_page,
-			   cache_safe_filename(cgit_querystring)));
-		if (cgit_query_has_symref)
-			item->ttl = cgit_cache_dynamic_ttl;
-		else if (cgit_query_has_sha1)
-			item->ttl = cgit_cache_static_ttl;
-		else
-			item->ttl = cgit_cache_repo_ttl;
+	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 1;
+	return 0;
 }
 
-static void cgit_print_repo_page(struct cacheitem *item)
+static void process_request(struct cgit_context *ctx)
 {
-	char *title;
-	int show_search;
-
-	if (!cgit_query_head)
-		cgit_query_head = cgit_repo->defbranch;
-
-	if (chdir(cgit_repo->path)) {
-		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)));
+	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;
 	}
 
-	title = fmt("%s - %s", cgit_repo->name, cgit_repo->desc);
-	show_search = 0;
-	setenv("GIT_DIR", cgit_repo->path, 1);
-
-	if (cgit_query_page) {
-	    if (cgit_repo->snapshots && !strcmp(cgit_query_page, "snapshot")) {
-		cgit_print_snapshot(item, cgit_query_sha1, "zip",
-				    cgit_repo->url, cgit_query_name);
+	if (cmd->want_repo && prepare_repo_cmd(ctx))
 		return;
-	    }
-	    if (!strcmp(cgit_query_page, "blob")) {
-		    cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
-		    return;
-	    }
-	}
-
-	if (cgit_query_page && !strcmp(cgit_query_page, "log"))
-		show_search = 1;
 
-	cgit_print_docstart(title, item);
+	if (cmd->want_layout) {
+		cgit_print_http_headers(ctx);
+		cgit_print_docstart(ctx);
+		cgit_print_pageheader(ctx);
+	}
 
+	cmd->fn(ctx);
 
-	if (!cgit_query_page) {
-		cgit_print_pageheader("summary", show_search);
-		cgit_print_summary();
+	if (cmd->want_layout)
 		cgit_print_docend();
-		return;
-	}
+}
 
-	cgit_print_pageheader(cgit_query_page, show_search);
-
-	if (!strcmp(cgit_query_page, "log")) {
-		cgit_print_log(cgit_query_head, cgit_query_ofs,
-			       cgit_max_commit_count, cgit_query_search,
-			       cgit_query_path);
-	} else if (!strcmp(cgit_query_page, "tree")) {
-		cgit_print_tree(cgit_query_head, cgit_query_sha1, cgit_query_path);
-	} 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, cgit_query_path);
-	} else if (!strcmp(cgit_query_page, "diff")) {
-		cgit_print_diff(cgit_query_sha1, cgit_query_sha2, cgit_query_path);
-	} else {
-		cgit_print_error("Invalid request");
-	}
-	cgit_print_docend();
+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));
-	item->st.st_mtime = time(NULL);
-
 	if (use_cache) {
 		stdout2 = chk_positive(dup(STDOUT_FILENO),
 				       "Preserving STDOUT");
@@ -142,10 +180,9 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 		chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
 	}
 
-	if (cgit_query_repo)
-		cgit_print_repo_page(item);
-	else
-		cgit_print_repolist(item);
+	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");
@@ -153,8 +190,6 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 			     "Restoring original STDOUT");
 		chk_zero(close(stdout2), "Closing temporary STDOUT");
 	}
-
-	chdir(buf);
 }
 
 static void cgit_check_cache(struct cacheitem *item)
@@ -162,7 +197,7 @@ static void cgit_check_cache(struct cacheitem *item)
 	int i = 0;
 
  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));
 	}
@@ -208,30 +243,30 @@ static void cgit_parse_args(int argc, const char **argv)
 
 	for (i = 1; i < argc; i++) {
 		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);
 		}
 	}
 }
@@ -239,23 +274,25 @@ 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");
 
-	htmlfd = STDOUT_FILENO;
+	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(CGIT_CONFIG, cgit_global_config_cb);
+	cgit_read_config(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
+			 cgit_global_config_cb);
 	if (getenv("SCRIPT_NAME"))
-		cgit_script_name = xstrdup(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);
+	cgit_parse_query(ctx.qry.raw, cgit_querystring_cb);
 	if (!cgit_prepare_cache(&item))
 		return 0;
-	if (cgit_nocache) {
+	if (ctx.cfg.nocache) {
 		cgit_fill_cache(&item, 0);
 	} else {
 		cgit_check_cache(&item);