Minor code improvements and split into multiple c files

Signed-off-by: Mattias Andrée <m@maandree.se>

1 files changed, 43 insertions, 0 deletions

diff --git a/libcoopgamma_get_socket_file.c b/libcoopgamma_get_socket_file.c
new file mode 100644
index 0000000..3ac9a2b
--- /dev/null
+++ b/libcoopgamma_get_socket_file.c
@@ -0,0 +1,43 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+/**
+ * Get the socket file of the coopgamma server
+ * 
+ * SIGCHLD must not be ignored or blocked
+ * 
+ * @param   method   The adjustment method, `NULL` for automatic
+ * @param   site     The site, `NULL` for automatic
+ * @return           The pathname of the server's socket, `NULL` on error
+ *                   or if there server does have its own socket. The later
+ *                   case is detected by checking that `errno` is set to 0,
+ *                   and is the case when communicating with a server in a
+ *                   multi-server display server like mds.
+ */
+char *
+libcoopgamma_get_socket_file(const char *restrict method, const char *restrict site)
+{
+	char *raw;
+	char *p;
+
+	raw = libcoopgamma_query__(method, site, "-qq");
+	if (!raw)
+		return NULL;
+
+	p = &strchr(raw, '\0')[-1];
+	if (p < raw || *p != '\n') {
+		errno = EBADMSG;
+		goto fail;
+	}
+	*p = '\0';
+	if (!*raw) {
+		errno = EBADMSG;
+		goto fail;
+	}
+
+	return raw;
+fail:
+	free(raw);
+	return NULL;
+}