Add config option to make paths relative to config file

include/cfg.h

@@ -35,8 +35,10 @@
 	X(string, xkb_layout) \
 	X(string, xkb_variant) \
 	X(string, xkb_options) \
+	X(bool, use_relative_paths) \
 
 struct cfg {
+	char* directory;
 #define string char*
 #define uint uint32_t
 #define X(type, name) type name;

src/cfg.c

@@ -18,6 +18,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include <libgen.h>
+#include <limits.h>
 
 #include "cfg.h"
 
@@ -106,11 +108,16 @@ static int cfg__load_line(struct cfg* self, char* line)
 	return cfg__load_key_value(self, key, value);
 }
 
+static char* cfg__dirname(const char* path)
+{
+	char buffer[PATH_MAX];
+	return strdup(dirname(realpath(path, buffer)));
+}
+
 int cfg_load(struct cfg* self, const char* requested_path)
 {
 	const char* path = requested_path ? requested_path
 	                                  : cfg__get_default_path();
-
 	if (!path)
 		return -1;
 
@@ -118,6 +125,8 @@ int cfg_load(struct cfg* self, const char* requested_path)
 	if (!stream)
 		return -1;
 
+	self->directory = cfg__dirname(path);
+
 	char* line = NULL;
 	size_t len = 0;
 	int lineno = 0;
@@ -136,6 +145,7 @@ int cfg_load(struct cfg* self, const char* requested_path)
 failure:
 	cfg_destroy(self);
 	free(line);
+	free(self->directory);
 	fclose(stream);
 	return lineno;
 }
@@ -153,4 +163,5 @@ void cfg_destroy(struct cfg* self)
 #undef DESTROY_string
 #undef DESTROY_uint
 #undef DESTROY_bool
+	free(self->directory);
 }

src/main.c

@@ -705,7 +705,18 @@ static int blank_screen(struct wayvnc* self)
 	return 0;
 }
 
-int init_nvnc(struct wayvnc* self, const char* addr, uint16_t port,
+static char* get_cfg_path(const struct cfg* cfg, char* dst, const char* src)
+{
+	if (!cfg->use_relative_paths) {
+		strlcpy(dst, src, PATH_MAX);
+		return dst;
+	}
+
+	snprintf(dst, PATH_MAX, "%s/%s", cfg->directory, src);
+	return dst;
+}
+
+static int init_nvnc(struct wayvnc* self, const char* addr, uint16_t port,
 		enum socket_type socket_type)
 {
 	switch (socket_type) {
@@ -755,16 +766,25 @@ int init_nvnc(struct wayvnc* self, const char* addr, uint16_t port,
 		}
 
 		if (self->cfg.rsa_private_key_file) {
-			if (nvnc_set_rsa_creds(self->nvnc, self->cfg.rsa_private_key_file) < 0) {
+			char tmp[PATH_MAX];
+			const char* key_file = get_cfg_path(&self->cfg, tmp,
+					self->cfg.rsa_private_key_file);
+			if (nvnc_set_rsa_creds(self->nvnc, key_file) < 0) {
 				nvnc_log(NVNC_LOG_ERROR, "Failed to load RSA credentials");
 				goto failure;
 			}
 		}
 
 		if (self->cfg.private_key_file) {
-			int r = nvnc_set_tls_creds(self->nvnc,
-					self->cfg.private_key_file,
+			char key_file[PATH_MAX];
+			char cert_file[PATH_MAX];
+
+			get_cfg_path(&self->cfg, key_file,
+					self->cfg.private_key_file);
+			get_cfg_path(&self->cfg, cert_file,
 					self->cfg.certificate_file);
+			int r = nvnc_set_tls_creds(self->nvnc, key_file,
+					cert_file);
 			if (r < 0) {
 				nvnc_log(NVNC_LOG_ERROR, "Failed to enable TLS authentication");
 				goto failure;