X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=daemon.c;h=df9768fecc490b681449bdaff17bacb78d257f8c;hb=dc8edc8f7d503b96dc4ceb275f7f6ca7637be5a9;hp=e6b51ed9981f2e4084504a2a092a3f28fc7d4c8a;hpb=67de23ddb1ed5471e302f6a84fae7a9037a0d980;p=thirdparty%2Fgit.git

diff --git a/daemon.c b/daemon.c
index e6b51ed998..df9768fecc 100644
--- a/daemon.c
+++ b/daemon.c
@@ -61,6 +61,22 @@ static char *canon_hostname;
 static char *ip_address;
 static char *tcp_port;
 
+static int hostname_lookup_done;
+
+static void lookup_hostname(void);
+
+static const char *get_canon_hostname(void)
+{
+	lookup_hostname();
+	return canon_hostname;
+}
+
+static const char *get_ip_address(void)
+{
+	lookup_hostname();
+	return ip_address;
+}
+
 static void logreport(int priority, const char *err, va_list params)
 {
 	if (log_syslog) {
@@ -106,6 +122,46 @@ static void NORETURN daemon_die(const char *err, va_list params)
 	exit(1);
 }
 
+static void strbuf_addstr_or_null(struct strbuf *sb, const char *s)
+{
+	if (s)
+		strbuf_addstr(sb, s);
+}
+
+struct expand_path_context {
+	const char *directory;
+};
+
+static size_t expand_path(struct strbuf *sb, const char *placeholder, void *ctx)
+{
+	struct expand_path_context *context = ctx;
+
+	switch (placeholder[0]) {
+	case 'H':
+		strbuf_addstr_or_null(sb, hostname);
+		return 1;
+	case 'C':
+		if (placeholder[1] == 'H') {
+			strbuf_addstr_or_null(sb, get_canon_hostname());
+			return 2;
+		}
+		break;
+	case 'I':
+		if (placeholder[1] == 'P') {
+			strbuf_addstr_or_null(sb, get_ip_address());
+			return 2;
+		}
+		break;
+	case 'P':
+		strbuf_addstr_or_null(sb, tcp_port);
+		return 1;
+	case 'D':
+		strbuf_addstr(sb, context->directory);
+		return 1;
+	}
+	return 0;
+}
+
 static const char *path_ok(const char *directory)
 {
 	static char rpath[PATH_MAX];
@@ -144,14 +200,10 @@ static const char *path_ok(const char *directory)
 	}
 	else if (interpolated_path && saw_extended_args) {
 		struct strbuf expanded_path = STRBUF_INIT;
-		struct strbuf_expand_dict_entry dict[6];
-
-		dict[0].placeholder = "H"; dict[0].value = hostname;
-		dict[1].placeholder = "CH"; dict[1].value = canon_hostname;
-		dict[2].placeholder = "IP"; dict[2].value = ip_address;
-		dict[3].placeholder = "P"; dict[3].value = tcp_port;
-		dict[4].placeholder = "D"; dict[4].value = directory;
-		dict[5].placeholder = NULL; dict[5].value = NULL;
+		struct expand_path_context context;
+
+		context.directory = directory;
+
 		if (*dir != '/') {
 			/* Allow only absolute */
 			logerror("'%s': Non-absolute path denied (interpolated-path active)", dir);
@@ -159,7 +211,7 @@ static const char *path_ok(const char *directory)
 		}
 
 		strbuf_expand(&expanded_path, interpolated_path,
-				strbuf_expand_dict_cb, &dict);
+			      expand_path, &context);
 		strlcpy(interp_path, expanded_path.buf, PATH_MAX);
 		strbuf_release(&expanded_path);
 		loginfo("Interpolated dir '%s'", interp_path);
@@ -271,8 +323,8 @@ static int run_access_hook(struct daemon_service *service, const char *dir, cons
 	*arg++ = service->name;
 	*arg++ = path;
 	*arg++ = STRARG(hostname);
-	*arg++ = STRARG(canon_hostname);
-	*arg++ = STRARG(ip_address);
+	*arg++ = STRARG(get_canon_hostname());
+	*arg++ = STRARG(get_ip_address());
 	*arg++ = STRARG(tcp_port);
 	*arg = NULL;
 #undef STRARG
@@ -529,6 +581,7 @@ static void parse_host_arg(char *extra_args, int buflen)
 				}
 				free(hostname);
 				hostname = xstrdup_tolower(host);
+				hostname_lookup_done = 0;
 			}
 
 			/* On to the next one */
@@ -537,11 +590,14 @@ static void parse_host_arg(char *extra_args, int buflen)
 		if (extra_args < end && *extra_args)
 			die("Invalid request");
 	}
+}
 
-	/*
-	 * Locate canonical hostname and its IP address.
-	 */
-	if (hostname) {
+/*
+ * Locate canonical hostname and its IP address.
+ */
+static void lookup_hostname(void)
+{
+	if (!hostname_lookup_done && hostname) {
 #ifndef NO_IPV6
 		struct addrinfo hints;
 		struct addrinfo *ai;
@@ -573,21 +629,23 @@ static void parse_host_arg(char *extra_args, int buflen)
 		static char addrbuf[HOST_NAME_MAX + 1];
 
 		hent = gethostbyname(hostname);
+		if (hent) {
+			ap = hent->h_addr_list;
+			memset(&sa, 0, sizeof sa);
+			sa.sin_family = hent->h_addrtype;
+			sa.sin_port = htons(0);
+			memcpy(&sa.sin_addr, *ap, hent->h_length);
+
+			inet_ntop(hent->h_addrtype, &sa.sin_addr,
+				  addrbuf, sizeof(addrbuf));
 
-		ap = hent->h_addr_list;
-		memset(&sa, 0, sizeof sa);
-		sa.sin_family = hent->h_addrtype;
-		sa.sin_port = htons(0);
-		memcpy(&sa.sin_addr, *ap, hent->h_length);
-
-		inet_ntop(hent->h_addrtype, &sa.sin_addr,
-			  addrbuf, sizeof(addrbuf));
-
-		free(canon_hostname);
-		canon_hostname = xstrdup(hent->h_name);
-		free(ip_address);
-		ip_address = xstrdup(addrbuf);
+			free(canon_hostname);
+			canon_hostname = xstrdup(hent->h_name);
+			free(ip_address);
+			ip_address = xstrdup(addrbuf);
+		}
 #endif
+		hostname_lookup_done = 1;
 	}
 }
 
@@ -834,7 +892,6 @@ static const char *ip2str(int family, struct sockaddr *sin, socklen_t len)
 static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist)
 {
 	int socknum = 0;
-	int maxfd = -1;
 	char pbuf[NI_MAXSERV];
 	struct addrinfo hints, *ai0, *ai;
 	int gai;
@@ -902,9 +959,6 @@ static int setup_named_sock(char *listen_addr, int listen_port, struct socketlis
 		ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc);
 		socklist->list[socklist->nr++] = sockfd;
 		socknum++;
-
-		if (maxfd < sockfd)
-			maxfd = sockfd;
 	}
 
 	freeaddrinfo(ai0);
@@ -943,7 +997,7 @@ static int setup_named_sock(char *listen_addr, int listen_port, struct socketlis
 	}
 
 	if ( bind(sockfd, (struct sockaddr *)&sin, sizeof sin) < 0 ) {
-		logerror("Could not listen to %s: %s",
+		logerror("Could not bind to %s: %s",
 			 ip2str(AF_INET, (struct sockaddr *)&sin, sizeof(sin)),
 			 strerror(errno));
 		close(sockfd);