Add support for opening a MeshLink instance without permanent storage.

[meshlink] / src / conf.c

diff --git a/src/conf.c b/src/conf.c
index 9e93c9a168a511b886fc2edbbddaaeddcfd5e362..9664e2b776a923a9d33d69451d5867c52986b5b4 100644 (file)
--- a/src/conf.c
+++ b/src/conf.c
@@ -75,6 +75,10 @@ static void deltree(const char *dirname) {
 
 /// Create a fresh configuration directory
 bool config_init(meshlink_handle_t *mesh) {
+       if(!mesh->confbase) {
+               return true;
+       }
+
        if(mkdir(mesh->confbase, 0700) && errno != EEXIST) {
                logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", mesh->confbase, strerror(errno));
                return false;
@@ -131,6 +135,10 @@ bool config_destroy(const char *confbase) {
 
 /// Check the presence of the main configuration file.
 bool main_config_exists(meshlink_handle_t *mesh) {
+       if(!mesh->confbase) {
+               return false;
+       }
+
        char path[PATH_MAX];
        make_main_path(mesh, path, sizeof(path));
 
@@ -139,6 +147,10 @@ bool main_config_exists(meshlink_handle_t *mesh) {
 
 /// Lock the main configuration file.
 bool main_config_lock(meshlink_handle_t *mesh) {
+       if(!mesh->confbase) {
+               return true;
+       }
+
        char path[PATH_MAX];
        make_main_path(mesh, path, sizeof(path));
 
@@ -181,6 +193,10 @@ void main_config_unlock(meshlink_handle_t *mesh) {
 
 /// Read a configuration file from a FILE handle.
 bool config_read_file(meshlink_handle_t *mesh, FILE *f, config_t *config) {
+       if(!mesh->confbase) {
+               return false;
+       }
+
        (void)mesh;
        long len;
 
@@ -228,6 +244,10 @@ bool config_read_file(meshlink_handle_t *mesh, FILE *f, config_t *config) {
 
 /// Write a configuration file to a FILE handle.
 bool config_write_file(meshlink_handle_t *mesh, FILE *f, const config_t *config) {
+       if(!mesh->confbase) {
+               return true;
+       }
+
        if(mesh->config_key) {
                uint8_t buf[config->len + 16];
                size_t len = sizeof(buf);
@@ -266,6 +286,10 @@ void config_free(config_t *config) {
 
 /// Check the presence of a host configuration file.
 bool config_exists(meshlink_handle_t *mesh, const char *name) {
+       if(!mesh->confbase) {
+               return false;
+       }
+
        char path[PATH_MAX];
        make_host_path(mesh, name, path, sizeof(path));
 
@@ -274,6 +298,10 @@ bool config_exists(meshlink_handle_t *mesh, const char *name) {
 
 /// Read a host configuration file.
 bool config_read(meshlink_handle_t *mesh, const char *name, config_t *config) {
+       if(!mesh->confbase) {
+               return false;
+       }
+
        char path[PATH_MAX];
        make_host_path(mesh, name, path, sizeof(path));
 
@@ -294,8 +322,37 @@ bool config_read(meshlink_handle_t *mesh, const char *name, config_t *config) {
        return true;
 }
 
+void config_scan_all(meshlink_handle_t *mesh, config_scan_action_t action) {
+       if(!mesh->confbase) {
+               return;
+       }
+
+       DIR *dir;
+       struct dirent *ent;
+       char dname[PATH_MAX];
+       make_host_path(mesh, NULL, dname, sizeof(dname));
+
+       dir = opendir(dname);
+
+       if(!dir) {
+               logger(mesh, MESHLINK_ERROR, "Could not open %s: %s", dname, strerror(errno));
+               meshlink_errno = MESHLINK_ESTORAGE;
+               return;
+       }
+
+       while((ent = readdir(dir))) {
+               action(mesh, ent->d_name);
+       }
+
+       closedir(dir);
+}
+
 /// Write a host configuration file.
 bool config_write(meshlink_handle_t *mesh, const char *name, const config_t *config) {
+       if(!mesh->confbase) {
+               return true;
+       }
+
        char path[PATH_MAX];
        make_host_path(mesh, name, path, sizeof(path));
 
@@ -318,6 +375,10 @@ bool config_write(meshlink_handle_t *mesh, const char *name, const config_t *con
 
 /// Read the main configuration file.
 bool main_config_read(meshlink_handle_t *mesh, config_t *config) {
+       if(!mesh->confbase) {
+               return false;
+       }
+
        char path[PATH_MAX];
        make_main_path(mesh, path, sizeof(path));
 
@@ -340,6 +401,10 @@ bool main_config_read(meshlink_handle_t *mesh, config_t *config) {
 
 /// Write the main configuration file.
 bool main_config_write(meshlink_handle_t *mesh, const config_t *config) {
+       if(!mesh->confbase) {
+               return true;
+       }
+
        char path[PATH_MAX];
        make_main_path(mesh, path, sizeof(path));
 
@@ -362,6 +427,10 @@ bool main_config_write(meshlink_handle_t *mesh, const config_t *config) {
 
 /// Read an invitation file, and immediately delete it.
 bool invitation_read(meshlink_handle_t *mesh, const char *name, config_t *config) {
+       if(!mesh->confbase) {
+               return false;
+       }
+
        char path[PATH_MAX];
        char used_path[PATH_MAX];
        make_invitation_path(mesh, name, path, sizeof(path));
@@ -416,6 +485,10 @@ bool invitation_read(meshlink_handle_t *mesh, const char *name, config_t *config
 
 /// Write an invitation file.
 bool invitation_write(meshlink_handle_t *mesh, const char *name, const config_t *config) {
+       if(!mesh->confbase) {
+               return true;
+       }
+
        char path[PATH_MAX];
        make_invitation_path(mesh, name, path, sizeof(path));
 
@@ -438,6 +511,10 @@ bool invitation_write(meshlink_handle_t *mesh, const char *name, const config_t
 
 /// Purge old invitation files
 size_t invitation_purge_old(meshlink_handle_t *mesh, time_t deadline) {
+       if(!mesh->confbase) {
+               return true;
+       }
+
        char path[PATH_MAX];
        make_invitation_path(mesh, "", path, sizeof(path));