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Tighten router_write_fingerprint impl
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parent
3ca5fe81e3
commit
25c0435aa5
@ -691,13 +691,14 @@ router_initialize_tls_context(void)
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static int
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router_write_fingerprint(int hashed)
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{
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char *keydir, *cp;
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char *keydir = NULL, *cp = NULL;
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const char *fname = hashed ? "hashed-fingerprint" :
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"fingerprint";
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char fingerprint[FINGERPRINT_LEN+1];
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const or_options_t *options = get_options();
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/*nickname<space>fp\n\0 */
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char fingerprint_line[MAX_NICKNAME_LEN+FINGERPRINT_LEN+3];
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char *fingerprint_line = NULL;
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int result = -1;
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keydir = get_datadir_fname(fname);
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log_info(LD_GENERAL,"Dumping %sfingerprint to \"%s\"...",
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hashed ? "hashed " : "", keydir);
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@ -705,45 +706,39 @@ router_write_fingerprint(int hashed)
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if (crypto_pk_get_fingerprint(get_server_identity_key(),
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fingerprint, 0) < 0) {
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log_err(LD_GENERAL,"Error computing fingerprint");
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tor_free(keydir);
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return -1;
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goto done;
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}
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} else {
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if (crypto_pk_get_hashed_fingerprint(get_server_identity_key(),
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fingerprint) < 0) {
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log_err(LD_GENERAL,"Error computing hashed fingerprint");
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tor_free(keydir);
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return -1;
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goto done;
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}
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}
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tor_assert(strlen(options->Nickname) <= MAX_NICKNAME_LEN);
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if (tor_snprintf(fingerprint_line, sizeof(fingerprint_line),
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"%s %s\n",options->Nickname, fingerprint) < 0) {
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log_err(LD_GENERAL,"Error writing %sfingerprint line",
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hashed ? "hashed " : "");
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tor_free(keydir);
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return -1;
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}
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tor_asprintf(&fingerprint_line, "%s %s\n", options->Nickname, fingerprint);
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/* Check whether we need to write the (hashed-)fingerprint file. */
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cp = NULL;
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if (file_status(keydir) == FN_FILE)
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cp = read_file_to_str(keydir, 0, NULL);
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cp = read_file_to_str(keydir, RFTS_IGNORE_MISSING, NULL);
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if (!cp || strcmp(cp, fingerprint_line)) {
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if (write_str_to_file(keydir, fingerprint_line, 0)) {
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log_err(LD_FS, "Error writing %sfingerprint line to file",
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hashed ? "hashed " : "");
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tor_free(keydir);
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tor_free(cp);
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return -1;
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goto done;
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}
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}
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tor_free(cp);
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tor_free(keydir);
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log_notice(LD_GENERAL, "Your Tor %s identity key fingerprint is '%s %s'",
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hashed ? "bridge's hashed" : "server's", options->Nickname,
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fingerprint);
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return 0;
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result = 0;
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done:
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tor_free(cp);
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tor_free(keydir);
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tor_free(fingerprint_line);
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return result;
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}
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/** Initialize all OR private keys, and the TLS context, as necessary.
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