/*
- conf.c -- configuration code
- Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
+ econf.c -- configuration code
+ Copyright (C) 2018 Guus Sliepen <guus@meshlink.io>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "system.h"
#include <assert.h>
-#include "splay_tree.h"
-#include "connection.h"
#include "conf.h"
-#include "list.h"
+#include "crypto.h"
#include "logger.h"
#include "meshlink_internal.h"
-#include "netutl.h" /* for str2address */
-#include "protocol.h"
-#include "utils.h" /* for cp */
#include "xalloc.h"
+#include "packmsg.h"
-static int config_compare(const config_t *a, const config_t *b) {
- int result;
-
- result = strcasecmp(a->variable, b->variable);
-
- if(result) {
- return result;
- }
-
- return result = a->line - b->line;
-}
-
-void init_configuration(splay_tree_t **config_tree) {
- *config_tree = splay_alloc_tree((splay_compare_t) config_compare, (splay_action_t) free_config);
-}
-
-void exit_configuration(splay_tree_t **config_tree) {
- if(*config_tree) {
- splay_delete_tree(*config_tree);
- }
-
- *config_tree = NULL;
+/// Generate a path to the main configuration file.
+static void make_main_path(meshlink_handle_t *mesh, char *path, size_t len) {
+ snprintf(path, len, "%s" SLASH "meshlink.conf", mesh->confbase);
}
-config_t *new_config(void) {
- return xzalloc(sizeof(config_t));
+/// Generate a path to a host configuration file.
+static void make_host_path(meshlink_handle_t *mesh, const char *name, char *path, size_t len) {
+ snprintf(path, len, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name);
}
-void free_config(config_t *cfg) {
- free(cfg->variable);
- free(cfg->value);
- free(cfg);
+/// Generate a path to an unused invitation file.
+static void make_invitation_path(meshlink_handle_t *mesh, const char *name, char *path, size_t len) {
+ snprintf(path, len, "%s" SLASH "invitations" SLASH "%s", mesh->confbase, name);
}
-void config_add(splay_tree_t *config_tree, config_t *cfg) {
- splay_insert(config_tree, cfg);
+/// Generate a path to a used invitation file.
+static void make_used_invitation_path(meshlink_handle_t *mesh, const char *name, char *path, size_t len) {
+ snprintf(path, len, "%s" SLASH "invitations" SLASH "%s.used", mesh->confbase, name);
}
-config_t *lookup_config(splay_tree_t *config_tree, char *variable) {
- config_t cfg, *found;
+/// Remove a directory recursively
+static void deltree(const char *dirname) {
+ DIR *d = opendir(dirname);
- cfg.variable = variable;
- cfg.line = 0;
+ if(d) {
+ struct dirent *ent;
- found = splay_search_closest_greater(config_tree, &cfg);
-
- if(!found) {
- return NULL;
- }
-
- if(strcasecmp(found->variable, variable)) {
- return NULL;
- }
-
- return found;
-}
-
-config_t *lookup_config_next(splay_tree_t *config_tree, const config_t *cfg) {
- splay_node_t *node;
- config_t *found;
-
- node = splay_search_node(config_tree, cfg);
+ while((ent = readdir(d))) {
+ if(ent->d_name[0] == '.') {
+ continue;
+ }
- if(node) {
- if(node->next) {
- found = node->next->data;
+ char filename[PATH_MAX];
+ snprintf(filename, sizeof(filename), "%s" SLASH "%s", dirname, ent->d_name);
- if(!strcasecmp(found->variable, cfg->variable)) {
- return found;
+ if(unlink(filename)) {
+ deltree(filename);
}
}
- }
-
- return NULL;
-}
-
-bool get_config_bool(const config_t *cfg, bool *result) {
- if(!cfg) {
- return false;
- }
- if(!strcasecmp(cfg->value, "yes")) {
- *result = true;
- return true;
- } else if(!strcasecmp(cfg->value, "no")) {
- *result = false;
- return true;
+ closedir(d);
}
- logger(NULL, MESHLINK_ERROR, "\"yes\" or \"no\" expected for configuration variable %s in line %d",
- cfg->variable, cfg->line);
-
- return false;
+ rmdir(dirname);
}
-bool get_config_int(const config_t *cfg, int *result) {
- if(!cfg) {
+/// Create a fresh configuration directory
+bool config_init(meshlink_handle_t *mesh) {
+ if(mkdir(mesh->confbase, 0700) && errno != EEXIST) {
+ logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", mesh->confbase, strerror(errno));
return false;
}
- if(sscanf(cfg->value, "%d", result) == 1) {
- return true;
- }
+ char path[PATH_MAX];
- logger(NULL, MESHLINK_ERROR, "Integer expected for configuration variable %s in line %d",
- cfg->variable, cfg->line);
+ // Remove meshlink.conf
+ snprintf(path, sizeof(path), "%s" SLASH "meshlink.conf", mesh->confbase);
+ unlink(path);
- return false;
-}
+ // Remove any host config files
+ snprintf(path, sizeof(path), "%s" SLASH "hosts", mesh->confbase);
+ deltree(path);
-bool set_config_int(config_t *cfg, int val) {
- if(!cfg) {
+ if(mkdir(path, 0700) && errno != EEXIST) {
+ logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", path, strerror(errno));
return false;
}
- char val_str[1024];
- snprintf(val_str, sizeof(val_str), "%d", val);
+ // Remove any invitation files
+ snprintf(path, sizeof(path), "%s" SLASH "invitations", mesh->confbase);
+ deltree(path);
- if(cfg->value) {
- free(cfg->value);
+ if(mkdir(path, 0700) && errno != EEXIST) {
+ logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", path, strerror(errno));
+ return false;
}
- cfg->value = xstrdup(val_str);
-
return true;
}
-bool get_config_string(const config_t *cfg, char **result) {
- if(!cfg) {
- return false;
+/// Wipe an existing configuration directory
+bool config_destroy(const char *confbase) {
+ char path[PATH_MAX];
+
+ // Remove meshlink.conf
+ snprintf(path, sizeof(path), "%s" SLASH "meshlink.conf", confbase);
+
+ if(unlink(path)) {
+ if(errno == ENOENT) {
+ meshlink_errno = MESHLINK_ENOENT;
+ return false;
+ } else {
+ logger(NULL, MESHLINK_ERROR, "Cannot delete %s: %s\n", path, strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ return false;
+ }
}
- *result = xstrdup(cfg->value);
-
+ deltree(confbase);
return true;
}
-bool set_config_string(config_t *cfg, const char *val) {
- if(!cfg) {
- return false;
- }
-
- if(cfg->value) {
- free(cfg->value);
- }
-
- cfg->value = xstrdup(val);
+/// Check the presence of the main configuration file.
+bool main_config_exists(meshlink_handle_t *mesh) {
+ char path[PATH_MAX];
+ make_main_path(mesh, path, sizeof(path));
- return true;
+ return access(path, F_OK) == 0;
}
-bool get_config_address(const config_t *cfg, struct addrinfo **result) {
- struct addrinfo *ai;
+/// Lock the main configuration file.
+bool main_config_lock(meshlink_handle_t *mesh) {
+ char path[PATH_MAX];
+ make_main_path(mesh, path, sizeof(path));
+
+ mesh->conffile = fopen(path, "r");
- if(!cfg) {
+ if(!mesh->conffile) {
+ logger(NULL, MESHLINK_ERROR, "Cannot not open %s: %s\n", path, strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
return false;
}
- ai = str2addrinfo(cfg->value, NULL, 0);
+#ifdef FD_CLOEXEC
+ fcntl(fileno(mesh->conffile), F_SETFD, FD_CLOEXEC);
+#endif
+
+#ifdef HAVE_MINGW
+ // TODO: use _locking()?
+#else
- if(ai) {
- *result = ai;
- return true;
+ if(flock(fileno(mesh->conffile), LOCK_EX | LOCK_NB) != 0) {
+ logger(NULL, MESHLINK_ERROR, "Cannot lock %s: %s\n", path, strerror(errno));
+ fclose(mesh->conffile);
+ mesh->conffile = NULL;
+ meshlink_errno = MESHLINK_EBUSY;
+ return false;
}
- logger(NULL, MESHLINK_ERROR, "Hostname or IP address expected for configuration variable %s in line %d",
- cfg->variable, cfg->line);
+#endif
- return false;
+ return true;
}
-/*
- Read exactly one line and strip the trailing newline if any.
-*/
-static char *readline(FILE *fp, char *buf, size_t buflen) {
- char *newline = NULL;
- char *p;
-
- if(feof(fp)) {
- return NULL;
+/// Unlock the main configuration file.
+void main_config_unlock(meshlink_handle_t *mesh) {
+ if(mesh->conffile) {
+ fclose(mesh->conffile);
+ mesh->conffile = NULL;
}
+}
- p = fgets(buf, buflen, fp);
+/// Read a configuration file from a FILE handle.
+bool config_read_file(meshlink_handle_t *mesh, FILE *f, config_t *config) {
+ (void)mesh;
+ long len;
- if(!p) {
- return NULL;
+ if(fseek(f, 0, SEEK_END) || !(len = ftell(f)) || fseek(f, 0, SEEK_SET)) {
+ logger(mesh, MESHLINK_ERROR, "Cannot get config file size: %s\n", strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ fclose(f);
+ return false;
}
- newline = strchr(p, '\n');
+ uint8_t *buf = xmalloc(len);
- if(!newline) {
- return buf;
+ if(fread(buf, len, 1, f) != 1) {
+ logger(mesh, MESHLINK_ERROR, "Cannot read config file: %s\n", strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ fclose(f);
+ return false;
}
- /* kill newline and carriage return if necessary */
- *newline = '\0';
-
- if(newline > p && newline[-1] == '\r') {
- newline[-1] = '\0';
+ if(mesh->config_key) {
+ uint8_t *decrypted = xmalloc(len);
+ size_t decrypted_len = len;
+ chacha_poly1305_ctx_t *ctx = chacha_poly1305_init();
+ chacha_poly1305_set_key(ctx, mesh->config_key);
+
+ if(len > 12 && chacha_poly1305_decrypt_iv96(ctx, buf, buf + 12, len - 12, decrypted, &decrypted_len)) {
+ free(buf);
+ config->buf = decrypted;
+ config->len = decrypted_len;
+ return true;
+ } else {
+ logger(mesh, MESHLINK_ERROR, "Cannot decrypt config file\n");
+ meshlink_errno = MESHLINK_ESTORAGE;
+ free(decrypted);
+ free(buf);
+ return false;
+ }
}
- return buf;
-}
-
-config_t *parse_config_line(char *line, const char *fname, int lineno) {
- config_t *cfg;
- int len;
- char *variable, *value, *eol;
- variable = value = line;
+ config->buf = buf;
+ config->len = len;
- eol = line + strlen(line);
-
- while(strchr("\t ", *--eol)) {
- *eol = '\0';
- }
+ return true;
+}
- len = strcspn(value, "\t =");
- value += len;
- value += strspn(value, "\t ");
+/// Write a configuration file to a FILE handle.
+bool config_write_file(meshlink_handle_t *mesh, FILE *f, const config_t *config) {
+ if(mesh->config_key) {
+ uint8_t buf[config->len + 16];
+ size_t len = sizeof(buf);
+ uint8_t seqbuf[12];
+ randomize(&seqbuf, sizeof(seqbuf));
+ chacha_poly1305_ctx_t *ctx = chacha_poly1305_init();
+ chacha_poly1305_set_key(ctx, mesh->config_key);
+ bool success = false;
+
+ if(chacha_poly1305_encrypt_iv96(ctx, seqbuf, config->buf, config->len, buf, &len)) {
+ success = fwrite(seqbuf, sizeof(seqbuf), 1, f) == 1 && fwrite(buf, len, 1, f) == 1;
+ } else {
+ logger(mesh, MESHLINK_ERROR, "Cannot encrypt config file\n");
+ meshlink_errno = MESHLINK_ESTORAGE;
+ }
- if(*value == '=') {
- value++;
- value += strspn(value, "\t ");
+ chacha_poly1305_exit(ctx);
+ return success;
}
- variable[len] = '\0';
-
- if(!*value) {
- const char err[] = "No value for variable";
- logger(NULL, MESHLINK_ERROR, "%s `%s' on line %d while reading config file %s",
- err, variable, lineno, fname);
- return NULL;
+ if(fwrite(config->buf, config->len, 1, f) != 1) {
+ logger(mesh, MESHLINK_ERROR, "Cannot write config file: %s", strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ return false;
}
- cfg = new_config();
- cfg->variable = xstrdup(variable);
- cfg->value = xstrdup(value);
- cfg->line = lineno;
-
- return cfg;
+ return true;
}
-/*
- Parse a configuration file and put the results in the configuration tree
- starting at *base.
-*/
-bool read_config_file(splay_tree_t *config_tree, const char *fname) {
- FILE *fp;
- char buffer[MAX_STRING_SIZE];
- char *line;
- int lineno = 0;
- bool ignore = false;
- config_t *cfg;
- bool result = false;
-
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(NULL, MESHLINK_ERROR, "Cannot open config file %s: %s", fname, strerror(errno));
- return false;
- }
+/// Free resources of a loaded configuration file.
+void config_free(config_t *config) {
+ free((uint8_t *)config->buf);
+ config->buf = NULL;
+ config->len = 0;
+}
- for(;;) {
- line = readline(fp, buffer, sizeof(buffer));
+/// Check the presence of a host configuration file.
+bool config_exists(meshlink_handle_t *mesh, const char *name) {
+ char path[PATH_MAX];
+ make_host_path(mesh, name, path, sizeof(path));
- if(!line) {
- if(feof(fp)) {
- result = true;
- }
-
- break;
- }
+ return access(path, F_OK) == 0;
+}
- lineno++;
+/// Read a host configuration file.
+bool config_read(meshlink_handle_t *mesh, const char *name, config_t *config) {
+ char path[PATH_MAX];
+ make_host_path(mesh, name, path, sizeof(path));
- if(!*line || *line == '#') {
- continue;
- }
+ FILE *f = fopen(path, "r");
- if(ignore) {
- if(!strncmp(line, "-----END", 8)) {
- ignore = false;
- }
+ if(!f) {
+ logger(mesh, MESHLINK_ERROR, "Failed to open `%s': %s", path, strerror(errno));
+ return false;
+ }
- continue;
- }
+ if(!config_read_file(mesh, f, config)) {
+ logger(mesh, MESHLINK_ERROR, "Failed to read `%s': %s", path, strerror(errno));
+ fclose(f);
+ return false;
+ }
- if(!strncmp(line, "-----BEGIN", 10)) {
- ignore = true;
- continue;
- }
+ fclose(f);
+ return true;
+}
- cfg = parse_config_line(line, fname, lineno);
+/// Write a host configuration file.
+bool config_write(meshlink_handle_t *mesh, const char *name, const config_t *config) {
+ char path[PATH_MAX];
+ make_host_path(mesh, name, path, sizeof(path));
- if(!cfg) {
- break;
- }
+ FILE *f = fopen(path, "w");
- config_add(config_tree, cfg);
+ if(!f) {
+ logger(mesh, MESHLINK_ERROR, "Failed to open `%s': %s", path, strerror(errno));
+ return false;
}
- fclose(fp);
+ if(!config_write_file(mesh, f, config)) {
+ logger(mesh, MESHLINK_ERROR, "Failed to write `%s': %s", path, strerror(errno));
+ fclose(f);
+ return false;
+ }
- return result;
+ fclose(f);
+ return true;
}
-bool write_config_file(const struct splay_tree_t *config_tree, const char *fname) {
- FILE *fp;
+/// Read the main configuration file.
+bool main_config_read(meshlink_handle_t *mesh, config_t *config) {
+ char path[PATH_MAX];
+ make_main_path(mesh, path, sizeof(path));
- fp = fopen(fname, "w+");
+ FILE *f = fopen(path, "r");
- if(!fp) {
- logger(NULL, MESHLINK_ERROR, "Cannot open config file %s: %s", fname, strerror(errno));
+ if(!f) {
+ logger(mesh, MESHLINK_ERROR, "Failed to open `%s': %s", path, strerror(errno));
return false;
}
- for splay_each(config_t, cnf, config_tree) {
- if(fwrite(cnf->variable, sizeof(char), strlen(cnf->variable), fp) < strlen(cnf->variable)) {
- goto error;
- }
-
- if(fwrite(" = ", sizeof(char), 3, fp) < 3) {
- goto error;
- }
-
- if(fwrite(cnf->value, sizeof(char), strlen(cnf->value), fp) < strlen(cnf->value)) {
- goto error;
- }
-
- if(fwrite("\n", sizeof(char), 1, fp) < 1) {
- goto error;
- }
+ if(!config_read_file(mesh, f, config)) {
+ logger(mesh, MESHLINK_ERROR, "Failed to read `%s': %s", path, strerror(errno));
+ fclose(f);
+ return false;
}
- fclose(fp);
+ fclose(f);
return true;
-
-error:
- logger(NULL, MESHLINK_ERROR, "Cannot write to config file %s: %s", fname, strerror(errno));
- fclose(fp);
- return false;
}
-bool read_server_config(meshlink_handle_t *mesh) {
- char filename[PATH_MAX];
- bool x;
+/// Write the main configuration file.
+bool main_config_write(meshlink_handle_t *mesh, const config_t *config) {
+ char path[PATH_MAX];
+ make_main_path(mesh, path, sizeof(path));
- snprintf(filename, PATH_MAX, "%s" SLASH "meshlink.conf", mesh->confbase);
- errno = 0;
- x = read_config_file(mesh->config, filename);
+ FILE *f = fopen(path, "w");
- if(!x && errno) {
- logger(mesh, MESHLINK_ERROR, "Failed to read `%s': %s", filename, strerror(errno));
+ if(!f) {
+ logger(mesh, MESHLINK_ERROR, "Failed to open `%s': %s", path, strerror(errno));
+ return false;
}
- return x;
-}
-
-bool read_host_config(meshlink_handle_t *mesh, splay_tree_t *config_tree, const char *name) {
- char filename[PATH_MAX];
- bool x;
-
- snprintf(filename, PATH_MAX, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name);
- x = read_config_file(config_tree, filename);
+ if(!config_write_file(mesh, f, config)) {
+ logger(mesh, MESHLINK_ERROR, "Failed to write `%s': %s", path, strerror(errno));
+ fclose(f);
+ return false;
+ }
- return x;
+ fclose(f);
+ return true;
}
-bool write_host_config(struct meshlink_handle *mesh, const struct splay_tree_t *config_tree, const char *name) {
- char filename[PATH_MAX];
-
- snprintf(filename, PATH_MAX, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name);
- return write_config_file(config_tree, filename);
-}
+/// Read an invitation file, and immediately delete it.
+bool invitation_read(meshlink_handle_t *mesh, const char *name, config_t *config) {
+ char path[PATH_MAX];
+ char used_path[PATH_MAX];
+ make_invitation_path(mesh, name, path, sizeof(path));
+ make_used_invitation_path(mesh, name, used_path, sizeof(used_path));
+
+ // Atomically rename the invitation file
+ if(rename(path, used_path)) {
+ if(errno == ENOENT) {
+ logger(mesh, MESHLINK_ERROR, "Peer tried to use non-existing invitation %s\n", name);
+ } else {
+ logger(mesh, MESHLINK_ERROR, "Error trying to rename invitation %s\n", name);
+ }
-bool modify_config_file(struct meshlink_handle *mesh, const char *name, const char *key, const char *value, int trim) {
- assert(mesh && name && key);
+ return false;
+ }
- char filename[PATH_MAX];
- char tmpname[PATH_MAX];
- bool error = false;
+ FILE *f = fopen(used_path, "r");
- if(snprintf(filename, sizeof(filename), "%s" SLASH "hosts" SLASH "%s", mesh->confbase, name) >= PATH_MAX) {
- logger(mesh, MESHLINK_ERROR, "Filename too long: %s" SLASH "hosts" SLASH "%s", mesh->confbase, name);
+ if(!f) {
+ logger(mesh, MESHLINK_ERROR, "Failed to open `%s': %s", path, strerror(errno));
return false;
}
- if(snprintf(tmpname, sizeof(tmpname), "%s.tmp", filename) >= PATH_MAX) {
- logger(mesh, MESHLINK_ERROR, "Filename too long: %s.tmp", filename);
+ // Check the timestamp
+ struct stat st;
+
+ if(fstat(fileno(f), &st)) {
+ logger(mesh, MESHLINK_ERROR, "Could not stat invitation file %s\n", name);
+ fclose(f);
+ unlink(used_path);
return false;
}
- FILE *fr = fopen(filename, "r");
+ if(time(NULL) > st.st_mtime + mesh->invitation_timeout) {
+ logger(mesh, MESHLINK_ERROR, "Peer tried to use an outdated invitation file %s\n", name);
+ fclose(f);
+ unlink(used_path);
+ return false;
+ }
- if(!fr) {
- logger(mesh, MESHLINK_ERROR, "Cannot open config file %s: %s", filename, strerror(errno));
+ if(!config_read_file(mesh, f, config)) {
+ logger(mesh, MESHLINK_ERROR, "Failed to read `%s': %s", path, strerror(errno));
+ fclose(f);
+ unlink(used_path);
return false;
}
- FILE *fw = fopen(tmpname, "w");
+ fclose(f);
+ unlink(used_path);
+ return true;
+}
+
+/// Write an invitation file.
+bool invitation_write(meshlink_handle_t *mesh, const char *name, const config_t *config) {
+ char path[PATH_MAX];
+ make_invitation_path(mesh, name, path, sizeof(path));
+
+ FILE *f = fopen(path, "w");
- if(!fw) {
- logger(mesh, MESHLINK_ERROR, "Cannot open temporary file %s: %s", tmpname, strerror(errno));
- fclose(fr);
+ if(!f) {
+ logger(mesh, MESHLINK_ERROR, "Failed to open `%s': %s", path, strerror(errno));
return false;
}
- char buf[4096];
- char *sep;
- int found = 0;
-
- if(value) {
- fprintf(fw, "%s = %s\n", key, value);
- found++;
+ if(!config_write_file(mesh, f, config)) {
+ logger(mesh, MESHLINK_ERROR, "Failed to write `%s': %s", path, strerror(errno));
+ fclose(f);
+ return false;
}
- while(readline(fr, buf, sizeof(buf))) {
- if(!*buf || *buf == '#') {
- goto copy;
- }
+ fclose(f);
+ return true;
+}
- sep = strchr(buf, ' ');
+/// Purge old invitation files
+size_t invitation_purge_old(meshlink_handle_t *mesh, time_t deadline) {
+ char path[PATH_MAX];
+ make_invitation_path(mesh, "", path, sizeof(path));
- if(!sep) {
- goto copy;
- }
+ DIR *dir = opendir(path);
- *sep = 0;
+ if(!dir) {
+ logger(mesh, MESHLINK_DEBUG, "Could not read directory %s: %s\n", path, strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ return 0;
+ }
- if(strcmp(buf, key)) {
- *sep = ' ';
- goto copy;
- }
+ errno = 0;
+ size_t count = 0;
+ struct dirent *ent;
- // We found the key and the value. We already added it at the top, so ignore this one.
- if(value && sep[1] == '=' && sep[2] == ' ' && !strcmp(sep + 3, value)) {
+ while((ent = readdir(dir))) {
+ if(strlen(ent->d_name) != 24) {
continue;
}
- // We found the key but with a different value, delete it if wanted.
- found++;
+ char invname[PATH_MAX];
+ struct stat st;
- if((!value || trim) && found > trim) {
+ if(snprintf(invname, sizeof(invname), "%s" SLASH "%s", path, ent->d_name) >= PATH_MAX) {
+ logger(mesh, MESHLINK_DEBUG, "Filename too long: %s" SLASH "%s", path, ent->d_name);
continue;
}
- *sep = ' ';
-
-copy:
- fprintf(fw, "%s\n", buf);
- }
-
- if(ferror(fr)) {
- error = true;
- }
-
- fclose(fr);
-
- if(ferror(fw)) {
- error = true;
- }
-
- if(fclose(fw)) {
- error = true;
+ if(!stat(invname, &st)) {
+ if(mesh->invitation_key && deadline < st.st_mtime) {
+ count++;
+ } else {
+ unlink(invname);
+ }
+ } else {
+ logger(mesh, MESHLINK_DEBUG, "Could not stat %s: %s\n", invname, strerror(errno));
+ errno = 0;
+ }
}
- // If any error occurred during reading or writing, exit.
- if(error) {
- unlink(tmpname);
- return false;
+ if(errno) {
+ logger(mesh, MESHLINK_DEBUG, "Error while reading directory %s: %s\n", path, strerror(errno));
+ closedir(dir);
+ meshlink_errno = MESHLINK_ESTORAGE;
+ return 0;
}
- // Try to atomically replace the old config file with the new one.
-#ifdef HAVE_MINGW
- char bakname[PATH_MAX];
- snprintf(bakname, sizeof(bakname), "%s.bak", filename);
-
- if(rename(filename, bakname) || rename(tmpname, filename)) {
- rename(bakname, filename);
-#else
-
- if(rename(tmpname, filename)) {
-#endif
- return false;
- } else {
-#ifdef HAVE_MINGW
- unlink(bakname);
-#endif
- return true;
- }
-}
+ closedir(dir);
-bool append_config_file(meshlink_handle_t *mesh, const char *name, const char *key, const char *value) {
- return modify_config_file(mesh, name, key, value, 0);
+ return count;
}
projects / meshlink / blobdiff