X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fconf.c;h=7756247bfbafa24fac3c225baffb4d462c378f65;hp=c5467d20ad3028583f1be2afa486340df6b38de1;hb=abb24e9d71b3edb9cacf4c04361cc0dfd4e6a061;hpb=20ae7dd8c12390f7360eb28cc17e1b8a8a706b06 diff --git a/src/conf.c b/src/conf.c index c5467d20..7756247b 100644 --- a/src/conf.c +++ b/src/conf.c @@ -1,10 +1,11 @@ /* conf.c -- configuration code - Copyright (C) 1998 Robert van der Meulen + Copyright (C) 1998 Robert van der Meulen 1998-2005 Ivo Timmermans - 2000-2010 Guus Sliepen - 2010 Julien Muchembled - 2000 Cris van Pelt + 2000 Cris van Pelt + 2010-2011 Julien Muchembled + 2000-2015 Guus Sliepen + 2013 Florent Clairambault 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 @@ -23,23 +24,22 @@ #include "system.h" -#include "avl_tree.h" +#include "splay_tree.h" #include "connection.h" #include "conf.h" +#include "list.h" #include "logger.h" -#include "netutl.h" /* for str2address */ +#include "names.h" +#include "netutl.h" /* for str2address */ #include "protocol.h" -#include "utils.h" /* for cp */ +#include "utils.h" /* for cp */ #include "xalloc.h" -avl_tree_t *config_tree; - -int pinginterval = 0; /* seconds between pings */ -int pingtimeout = 0; /* seconds to wait for response */ -char *confbase = NULL; /* directory in which all config files are */ -char *netname = NULL; /* name of the vpn network */ -list_t *cmdline_conf = NULL; /* global/host configuration values given at the command line */ +splay_tree_t *config_tree; +int pinginterval = 0; /* seconds between pings */ +int pingtimeout = 0; /* seconds to wait for response */ +list_t *cmdline_conf = NULL; /* global/host configuration values given at the command line */ static int config_compare(const config_t *a, const config_t *b) { int result; @@ -62,17 +62,17 @@ static int config_compare(const config_t *a, const config_t *b) { return a->file ? strcmp(a->file, b->file) : 0; } -void init_configuration(avl_tree_t ** config_tree) { - *config_tree = avl_alloc_tree((avl_compare_t) config_compare, (avl_action_t) free_config); +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(avl_tree_t ** config_tree) { - avl_delete_tree(*config_tree); +void exit_configuration(splay_tree_t ** config_tree) { + splay_delete_tree(*config_tree); *config_tree = NULL; } config_t *new_config(void) { - return xmalloc_and_zero(sizeof(config_t)); + return xzalloc(sizeof(config_t)); } void free_config(config_t *cfg) { @@ -88,18 +88,18 @@ void free_config(config_t *cfg) { free(cfg); } -void config_add(avl_tree_t *config_tree, config_t *cfg) { - avl_insert(config_tree, cfg); +void config_add(splay_tree_t *config_tree, config_t *cfg) { + splay_insert(config_tree, cfg); } -config_t *lookup_config(avl_tree_t *config_tree, char *variable) { +config_t *lookup_config(splay_tree_t *config_tree, char *variable) { config_t cfg, *found; cfg.variable = variable; cfg.file = NULL; cfg.line = 0; - found = avl_search_closest_greater(config_tree, &cfg); + found = splay_search_closest_greater(config_tree, &cfg); if(!found) return NULL; @@ -110,11 +110,11 @@ config_t *lookup_config(avl_tree_t *config_tree, char *variable) { return found; } -config_t *lookup_config_next(avl_tree_t *config_tree, const config_t *cfg) { - avl_node_t *node; +config_t *lookup_config_next(splay_tree_t *config_tree, const config_t *cfg) { + splay_node_t *node; config_t *found; - node = avl_search_node(config_tree, cfg); + node = splay_search_node(config_tree, cfg); if(node) { if(node->next) { @@ -140,7 +140,7 @@ bool get_config_bool(const config_t *cfg, bool *result) { return true; } - logger(LOG_ERR, "\"yes\" or \"no\" expected for configuration variable %s in %s line %d", + logger(DEBUG_ALWAYS, LOG_ERR, "\"yes\" or \"no\" expected for configuration variable %s in %s line %d", cfg->variable, cfg->file, cfg->line); return false; @@ -153,7 +153,7 @@ bool get_config_int(const config_t *cfg, int *result) { if(sscanf(cfg->value, "%d", result) == 1) return true; - logger(LOG_ERR, "Integer expected for configuration variable %s in %s line %d", + logger(DEBUG_ALWAYS, LOG_ERR, "Integer expected for configuration variable %s in %s line %d", cfg->variable, cfg->file, cfg->line); return false; @@ -181,20 +181,20 @@ bool get_config_address(const config_t *cfg, struct addrinfo **result) { return true; } - logger(LOG_ERR, "Hostname or IP address expected for configuration variable %s in %s line %d", + logger(DEBUG_ALWAYS, LOG_ERR, "Hostname or IP address expected for configuration variable %s in %s line %d", cfg->variable, cfg->file, cfg->line); return false; } bool get_config_subnet(const config_t *cfg, subnet_t ** result) { - subnet_t subnet = {0}; + subnet_t subnet = {NULL}; if(!cfg) return false; if(!str2net(&subnet, cfg->value)) { - logger(LOG_ERR, "Subnet expected for configuration variable %s in %s line %d", + logger(DEBUG_ALWAYS, LOG_ERR, "Subnet expected for configuration variable %s in %s line %d", cfg->variable, cfg->file, cfg->line); return false; } @@ -202,10 +202,10 @@ bool get_config_subnet(const config_t *cfg, subnet_t ** result) { /* Teach newbies what subnets are... */ if(((subnet.type == SUBNET_IPV4) - && !maskcheck(&subnet.net.ipv4.address, subnet.net.ipv4.prefixlength, sizeof(ipv4_t))) + && !maskcheck(&subnet.net.ipv4.address, subnet.net.ipv4.prefixlength, sizeof subnet.net.ipv4.address)) || ((subnet.type == SUBNET_IPV6) - && !maskcheck(&subnet.net.ipv6.address, subnet.net.ipv6.prefixlength, sizeof(ipv6_t)))) { - logger(LOG_ERR, "Network address and prefix length do not match for configuration variable %s in %s line %d", + && !maskcheck(&subnet.net.ipv6.address, subnet.net.ipv6.prefixlength, sizeof subnet.net.ipv6.address))) { + logger(DEBUG_ALWAYS, LOG_ERR, "Network address and prefix length do not match for configuration variable %s in %s line %d", cfg->variable, cfg->file, cfg->line); return false; } @@ -235,8 +235,9 @@ static char *readline(FILE * fp, char *buf, size_t buflen) { if(!newline) return buf; - *newline = '\0'; /* kill newline */ - if(newline > p && newline[-1] == '\r') /* and carriage return if necessary */ + /* kill newline and carriage return if necessary */ + *newline = '\0'; + if(newline > p && newline[-1] == '\r') newline[-1] = '\0'; return buf; @@ -264,10 +265,10 @@ config_t *parse_config_line(char *line, const char *fname, int lineno) { if(!*value) { const char err[] = "No value for variable"; if (fname) - logger(LOG_ERR, "%s `%s' on line %d while reading config file %s", + logger(DEBUG_ALWAYS, LOG_ERR, "%s `%s' on line %d while reading config file %s", err, variable, lineno, fname); else - logger(LOG_ERR, "%s `%s' in command line option %d", + logger(DEBUG_ALWAYS, LOG_ERR, "%s `%s' in command line option %d", err, variable, lineno); return NULL; } @@ -285,7 +286,7 @@ config_t *parse_config_line(char *line, const char *fname, int lineno) { Parse a configuration file and put the results in the configuration tree starting at *base. */ -bool read_config_file(avl_tree_t *config_tree, const char *fname) { +bool read_config_file(splay_tree_t *config_tree, const char *fname) { FILE *fp; char buffer[MAX_STRING_SIZE]; char *line; @@ -297,7 +298,7 @@ bool read_config_file(avl_tree_t *config_tree, const char *fname) { fp = fopen(fname, "r"); if(!fp) { - logger(LOG_ERR, "Cannot open config file %s: %s", fname, strerror(errno)); + logger(DEBUG_ALWAYS, LOG_DEBUG, "Cannot open config file %s: %s", fname, strerror(errno)); return false; } @@ -320,7 +321,7 @@ bool read_config_file(avl_tree_t *config_tree, const char *fname) { ignore = false; continue; } - + if(!strncmp(line, "-----BEGIN", 10)) { ignore = true; continue; @@ -337,156 +338,96 @@ bool read_config_file(avl_tree_t *config_tree, const char *fname) { return result; } -void read_config_options(avl_tree_t *config_tree, const char *prefix) { - list_node_t *node, *next; - size_t prefix_len = strlen(prefix); +void read_config_options(splay_tree_t *config_tree, const char *prefix) { + size_t prefix_len = prefix ? strlen(prefix) : 0; - for(node = cmdline_conf->tail; node; node = next) { - config_t *cfg = (config_t *)node->data; - next = node->prev; + for(const list_node_t *node = cmdline_conf->tail; node; node = node->prev) { + const config_t *cfg = node->data; + config_t *new; - if(!prefix && strchr(cfg->variable, '.')) - continue; + if(!prefix) { + if(strchr(cfg->variable, '.')) + continue; + } else { + if(strncmp(prefix, cfg->variable, prefix_len) || + cfg->variable[prefix_len] != '.') + continue; + } - if(prefix && (strncmp(prefix, cfg->variable, prefix_len) || cfg->variable[prefix_len] != '.')) - continue; + new = new_config(); + if(prefix) + new->variable = xstrdup(cfg->variable + prefix_len + 1); + else + new->variable = xstrdup(cfg->variable); + new->value = xstrdup(cfg->value); + new->file = NULL; + new->line = cfg->line; - config_add(config_tree, cfg); - node->data = NULL; - list_unlink_node(cmdline_conf, node); + config_add(config_tree, new); } } -bool read_server_config() { - list_node_t *node, *next; - char *fname; +bool read_server_config(void) { + char fname[PATH_MAX]; bool x; read_config_options(config_tree, NULL); - xasprintf(&fname, "%s/tinc.conf", confbase); + snprintf(fname, sizeof fname, "%s" SLASH "tinc.conf", confbase); + errno = 0; x = read_config_file(config_tree, fname); - if(!x) { /* System error: complain */ - logger(LOG_ERR, "Failed to read `%s': %s", fname, strerror(errno)); + // We will try to read the conf files in the "conf.d" dir + if (x) { + char dname[PATH_MAX]; + snprintf(dname, sizeof dname, "%s" SLASH "conf.d", confbase); + DIR *dir = opendir (dname); + // If we can find this dir + if (dir) { + struct dirent *ep; + // We list all the files in it + while (x && (ep = readdir (dir))) { + size_t l = strlen(ep->d_name); + // And we try to read the ones that end with ".conf" + if (l > 5 && !strcmp(".conf", & ep->d_name[ l - 5 ])) { + snprintf(fname, sizeof fname, "%s" SLASH "%s", dname, ep->d_name); + x = read_config_file(config_tree, fname); + } + } + closedir (dir); + } } - free(fname); + if(!x && errno) + logger(DEBUG_ALWAYS, LOG_ERR, "Failed to read `%s': %s", fname, strerror(errno)); return x; } -bool read_connection_config(connection_t *c) { - list_node_t *node, *next; - size_t name_len = strlen(c->name); - char *fname; +bool read_host_config(splay_tree_t *config_tree, const char *name) { + char fname[PATH_MAX]; bool x; - read_config_options(c->config_tree, c->name); + read_config_options(config_tree, name); - xasprintf(&fname, "%s/hosts/%s", confbase, c->name); - x = read_config_file(c->config_tree, fname); - free(fname); + snprintf(fname, sizeof fname, "%s" SLASH "hosts" SLASH "%s", confbase, name); + x = read_config_file(config_tree, fname); return x; } -FILE *ask_and_open(const char *filename, const char *what) { - FILE *r; - char *directory; - char line[PATH_MAX]; - const char *fn; - - /* Check stdin and stdout */ - if(!isatty(0) || !isatty(1)) { - /* Argh, they are running us from a script or something. Write - the files to the current directory and let them burn in hell - for ever. */ - fn = filename; - } else { - /* Ask for a file and/or directory name. */ - fprintf(stdout, "Please enter a file to save %s to [%s]: ", - what, filename); - fflush(stdout); - - fn = readline(stdin, line, sizeof line); - - if(!fn) { - fprintf(stderr, "Error while reading stdin: %s\n", - strerror(errno)); - return NULL; - } - - if(!strlen(fn)) - /* User just pressed enter. */ - fn = filename; - } - -#ifdef HAVE_MINGW - if(fn[0] != '\\' && fn[0] != '/' && !strchr(fn, ':')) { -#else - if(fn[0] != '/') { -#endif - /* The directory is a relative path or a filename. */ - char *p; - - directory = get_current_dir_name(); - xasprintf(&p, "%s/%s", directory, fn); - free(directory); - fn = p; - } - - umask(0077); /* Disallow everything for group and other */ - - /* Open it first to keep the inode busy */ - - r = fopen(fn, "r+") ?: fopen(fn, "w+"); - - if(!r) { - fprintf(stderr, "Error opening file `%s': %s\n", - fn, strerror(errno)); - return NULL; - } - - return r; -} - -bool disable_old_keys(FILE *f) { - char buf[100]; - long pos; - bool disabled = false; +bool append_config_file(const char *name, const char *key, const char *value) { + char fname[PATH_MAX]; + snprintf(fname, sizeof fname, "%s" SLASH "hosts" SLASH "%s", confbase, name); - rewind(f); - pos = ftell(f); + FILE *fp = fopen(fname, "a"); - if(pos < 0) + if(!fp) { + logger(DEBUG_ALWAYS, LOG_DEBUG, "Cannot open config file %s: %s", fname, strerror(errno)); return false; - - while(fgets(buf, sizeof buf, f)) { - if(!strncmp(buf, "-----BEGIN RSA", 14)) { - buf[11] = 'O'; - buf[12] = 'L'; - buf[13] = 'D'; - if(fseek(f, pos, SEEK_SET)) - break; - if(fputs(buf, f) <= 0) - break; - disabled = true; - } - else if(!strncmp(buf, "-----END RSA", 12)) { - buf[ 9] = 'O'; - buf[10] = 'L'; - buf[11] = 'D'; - if(fseek(f, pos, SEEK_SET)) - break; - if(fputs(buf, f) <= 0) - break; - disabled = true; - } - pos = ftell(f); - if(pos < 0) - break; } - return disabled; + fprintf(fp, "\n# The following line was automatically added by tinc\n%s = %s\n", key, value); + fclose(fp); + return true; }