Make snapshot feature configurable

Snapshots can now be enabled/disabled by default for all repositories in
cgitrc with param "snapshots". Additionally, any repo can override the
default setting with param "repo.snapshots".

By default, no snapshotting is enabled.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

cgit.c

@@ -79,7 +79,8 @@ static void cgit_print_repo_page(struct cacheitem *item)
 	show_search = 0;
 	setenv("GIT_DIR", cgit_repo->path, 1);
 
-	if (cgit_query_page && !strcmp(cgit_query_page, "snapshot")) {
+	if (cgit_repo->snapshots && cgit_query_page && 
+	    !strcmp(cgit_query_page, "snapshot")) {
 		cgit_print_snapshot(item, cgit_query_sha1, "zip", 
 				    cgit_repo->url, cgit_query_name);
 		return;

cgit.h

@@ -21,6 +21,7 @@ struct repoinfo {
 	char *path;
 	char *desc;
 	char *owner;
+	int snapshots;
 };
 
 struct repolist {
@@ -61,6 +62,7 @@ extern char *cgit_virtual_root;
 extern char *cgit_cache_root;
 
 extern int cgit_nocache;
+extern int cgit_snapshots;
 extern int cgit_max_lock_attempts;
 extern int cgit_cache_root_ttl;
 extern int cgit_cache_repo_ttl;

cgitrc

@@ -8,6 +8,10 @@
 #nocache=0
 
 
+## Enable/disable snapshots by default. This can be overridden per repo
+#snapshots=0
+
+
 ## Specify a root for virtual urls. This makes cgit generate urls like
 ##
 ##    http://localhost/git/repo/log/?id=master
@@ -77,3 +81,4 @@
 #repo.desc=the caching cgi for git
 #repo.path=/pub/git/cgit
 #repo.owner=Lars Hjemli
+#repo.snapshots=1    # override a sitewide snapshot-setting

shared.c

@@ -20,6 +20,7 @@ char *cgit_virtual_root = NULL;
 char *cgit_cache_root   = "/var/cache/cgit";
 
 int cgit_nocache               =  0;
+int cgit_snapshots             =  0;
 int cgit_max_lock_attempts     =  5;
 int cgit_cache_root_ttl        =  5;
 int cgit_cache_repo_ttl        =  5;
@@ -83,6 +84,7 @@ struct repoinfo *add_repo(const char *url)
 	ret->path = NULL;
 	ret->desc = NULL;
 	ret->owner = NULL;
+	ret->snapshots = cgit_snapshots;
 	return ret;
 }
 
@@ -100,6 +102,8 @@ void cgit_global_config_cb(const char *name, const char *value)
 		cgit_virtual_root = xstrdup(value);
 	else if (!strcmp(name, "nocache"))
 		cgit_nocache = atoi(value);
+	else if (!strcmp(name, "snapshots"))
+		cgit_snapshots = atoi(value);
 	else if (!strcmp(name, "cache-root"))
 		cgit_cache_root = xstrdup(value);
 	else if (!strcmp(name, "cache-root-ttl"))
@@ -122,6 +126,8 @@ void cgit_global_config_cb(const char *name, const char *value)
 		cgit_repo->desc = xstrdup(value);
 	else if (cgit_repo && !strcmp(name, "repo.owner"))
 		cgit_repo->owner = xstrdup(value);
+	else if (cgit_repo && !strcmp(name, "repo.snapshots"))
+		cgit_repo->snapshots = atoi(value);
 }
 
 void cgit_repo_config_cb(const char *name, const char *value)

ui-commit.c

@@ -169,11 +169,13 @@ void cgit_print_commit(const char *hex)
 		htmlf("'>%s</a></td></tr>\n", 
 		      sha1_to_hex(p->item->object.sha1));
 	}
-	htmlf("<tr><th>download</th><td colspan='2' class='sha1'><a href='");
-	filename = fmt("%s-%s.zip", cgit_query_repo, hex);
-	html_attr(cgit_pageurl(cgit_query_repo, "snapshot", 
-			       fmt("id=%s&name=%s", hex, filename)));
-	htmlf("'>%s</a></td></tr>", filename);
+	if (cgit_repo->snapshots) {
+		htmlf("<tr><th>download</th><td colspan='2' class='sha1'><a href='");
+		filename = fmt("%s-%s.zip", cgit_query_repo, hex);
+		html_attr(cgit_pageurl(cgit_query_repo, "snapshot", 
+				       fmt("id=%s&name=%s", hex, filename)));
+		htmlf("'>%s</a></td></tr>", filename);
+	}
 	
 	html("</table>\n");
 	html("<div class='commit-subject'>");