Add a basic implementation of meshlink_import() and _export().

diff --git a/src/meshlink.c b/src/meshlink.c
index 130994d8a30491fff582fe1da83754fa2b38157f..0195e04571d4df6e4779a0f8e8f8e60e7ce775e4 100644 (file)
--- a/src/meshlink.c
+++ b/src/meshlink.c
@@ -1232,11 +1232,77 @@ invalid:
 }
 
 char *meshlink_export(meshlink_handle_t *mesh) {
-       return NULL;
+       char filename[PATH_MAX];
+       snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, mesh->self->name);
+       FILE *f = fopen(filename, "r");
+       if(!f) {
+               fprintf(stderr, "Could not open %s: %s\n", filename, strerror(errno));
+               return NULL;
+       }
+
+       fseek(f, 0, SEEK_END);
+       int fsize = ftell(f);
+       rewind(f);
+
+       size_t len = fsize + 9 + strlen(mesh->self->name);
+       char *buf = xmalloc(len);
+       snprintf(buf, len, "Name = %s\n", mesh->self->name);
+       if(fread(buf + len - fsize - 1, fsize, 1, f) != 1) {
+               fprintf(stderr, "Error reading from %s: %s\n", filename, strerror(errno));
+               fclose(f);
+               return NULL;
+       }
+
+       fclose(f);
+       buf[len - 1] = 0;
+       return buf;
 }
 
 bool meshlink_import(meshlink_handle_t *mesh, const char *data) {
-       return false;
+       if(strncmp(data, "Name = ", 7)) {
+               fprintf(stderr, "Invalid data\n");
+               return false;
+       }
+
+       char *end = strchr(data + 7, '\n');
+       if(!end) {
+               fprintf(stderr, "Invalid data\n");
+               return false;
+       }
+
+       int len = end - (data + 7);
+       char name[len + 1];
+       memcpy(name, data + 7, len);
+       name[len] = 0;
+       if(!check_id(name)) {
+               fprintf(stderr, "Invalid Name\n");
+               return false;
+       }
+
+       char filename[PATH_MAX];
+       snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name);
+       if(!access(filename, F_OK)) {
+               fprintf(stderr, "File %s already exists, not importing\n", filename);
+               return false;
+       }
+
+       if(errno != ENOENT) {
+               fprintf(stderr, "Error accessing %s: %s\n", filename, strerror(errno));
+               return false;
+       }
+
+       FILE *f = fopen(filename, "w");
+       if(!f) {
+               fprintf(stderr, "Could not create %s: %s\n", filename, strerror(errno));
+               return false;
+       }
+
+       fwrite(end + 1, strlen(end + 1), 1, f);
+       fclose(f);
+
+       load_all_nodes(mesh);
+
+       return true;
 }
 
 void meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) {