mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-24 12:23:32 +01:00
Move the various _describe() functions out of router.c
Note that I haven't separated the headers yet (there's still an
This commit is contained in:
parent
fcd0f76134
commit
5c86f3c297
@ -89,6 +89,7 @@ LIBTOR_APP_A_SOURCES = \
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src/feature/keymgt/loadkey.c \
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src/feature/dirauth/keypin.c \
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src/feature/nodelist/authcert.c \
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src/feature/nodelist/describe.c \
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src/feature/nodelist/dirlist.c \
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src/feature/nodelist/microdesc.c \
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src/feature/nodelist/networkstatus.c \
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@ -297,6 +298,7 @@ noinst_HEADERS += \
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src/feature/keymgt/loadkey.h \
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src/feature/nodelist/authcert.h \
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src/feature/nodelist/authority_cert_st.h \
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src/feature/nodelist/describe.h \
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src/feature/nodelist/desc_store_st.h \
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src/feature/nodelist/dirlist.h \
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src/feature/nodelist/document_signature_st.h \
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178
src/feature/nodelist/describe.c
Normal file
178
src/feature/nodelist/describe.c
Normal file
@ -0,0 +1,178 @@
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/* Copyright (c) 2001 Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2018, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#include "core/or/or.h"
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#include "feature/nodelist/describe.h"
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#include "feature/relay/router.h"
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#include "core/or/extend_info_st.h"
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#include "feature/nodelist/node_st.h"
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#include "feature/nodelist/routerinfo_st.h"
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#include "feature/nodelist/routerstatus_st.h"
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/**
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* Longest allowed output of format_node_description, plus 1 character for
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* NUL. This allows space for:
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* "$FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF~xxxxxxxxxxxxxxxxxxx at"
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* " [ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255]"
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* plus a terminating NUL.
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*/
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#define NODE_DESC_BUF_LEN (MAX_VERBOSE_NICKNAME_LEN+4+TOR_ADDR_BUF_LEN)
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/** Use <b>buf</b> (which must be at least NODE_DESC_BUF_LEN bytes long) to
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* hold a human-readable description of a node with identity digest
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* <b>id_digest</b>, named-status <b>is_named</b>, nickname <b>nickname</b>,
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* and address <b>addr</b> or <b>addr32h</b>.
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*
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* The <b>nickname</b> and <b>addr</b> fields are optional and may be set to
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* NULL. The <b>addr32h</b> field is optional and may be set to 0.
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*
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* Return a pointer to the front of <b>buf</b>.
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*/
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static const char *
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format_node_description(char *buf,
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const char *id_digest,
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int is_named,
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const char *nickname,
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const tor_addr_t *addr,
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uint32_t addr32h)
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{
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char *cp;
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if (!buf)
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return "<NULL BUFFER>";
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buf[0] = '$';
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base16_encode(buf+1, HEX_DIGEST_LEN+1, id_digest, DIGEST_LEN);
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cp = buf+1+HEX_DIGEST_LEN;
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if (nickname) {
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buf[1+HEX_DIGEST_LEN] = is_named ? '=' : '~';
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strlcpy(buf+1+HEX_DIGEST_LEN+1, nickname, MAX_NICKNAME_LEN+1);
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cp += strlen(cp);
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}
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if (addr32h || addr) {
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memcpy(cp, " at ", 4);
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cp += 4;
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if (addr) {
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tor_addr_to_str(cp, addr, TOR_ADDR_BUF_LEN, 0);
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} else {
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struct in_addr in;
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in.s_addr = htonl(addr32h);
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tor_inet_ntoa(&in, cp, INET_NTOA_BUF_LEN);
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}
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}
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return buf;
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}
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/** Return a human-readable description of the routerinfo_t <b>ri</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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router_describe(const routerinfo_t *ri)
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{
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static char buf[NODE_DESC_BUF_LEN];
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if (!ri)
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return "<null>";
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return format_node_description(buf,
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ri->cache_info.identity_digest,
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0,
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ri->nickname,
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NULL,
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ri->addr);
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}
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/** Return a human-readable description of the node_t <b>node</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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node_describe(const node_t *node)
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{
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static char buf[NODE_DESC_BUF_LEN];
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const char *nickname = NULL;
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uint32_t addr32h = 0;
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int is_named = 0;
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if (!node)
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return "<null>";
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if (node->rs) {
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nickname = node->rs->nickname;
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is_named = node->rs->is_named;
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addr32h = node->rs->addr;
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} else if (node->ri) {
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nickname = node->ri->nickname;
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addr32h = node->ri->addr;
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}
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return format_node_description(buf,
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node->identity,
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is_named,
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nickname,
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NULL,
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addr32h);
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}
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/** Return a human-readable description of the routerstatus_t <b>rs</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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routerstatus_describe(const routerstatus_t *rs)
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{
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static char buf[NODE_DESC_BUF_LEN];
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if (!rs)
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return "<null>";
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return format_node_description(buf,
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rs->identity_digest,
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rs->is_named,
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rs->nickname,
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NULL,
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rs->addr);
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}
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/** Return a human-readable description of the extend_info_t <b>ei</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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extend_info_describe(const extend_info_t *ei)
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{
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static char buf[NODE_DESC_BUF_LEN];
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if (!ei)
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return "<null>";
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return format_node_description(buf,
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ei->identity_digest,
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0,
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ei->nickname,
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&ei->addr,
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0);
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}
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/** Set <b>buf</b> (which must have MAX_VERBOSE_NICKNAME_LEN+1 bytes) to the
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* verbose representation of the identity of <b>router</b>. The format is:
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* A dollar sign.
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* The upper-case hexadecimal encoding of the SHA1 hash of router's identity.
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* A "=" if the router is named (no longer implemented); a "~" if it is not.
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* The router's nickname.
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**/
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void
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router_get_verbose_nickname(char *buf, const routerinfo_t *router)
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{
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buf[0] = '$';
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base16_encode(buf+1, HEX_DIGEST_LEN+1, router->cache_info.identity_digest,
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DIGEST_LEN);
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buf[1+HEX_DIGEST_LEN] = '~';
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strlcpy(buf+1+HEX_DIGEST_LEN+1, router->nickname, MAX_NICKNAME_LEN+1);
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}
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25
src/feature/nodelist/describe.h
Normal file
25
src/feature/nodelist/describe.h
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@ -0,0 +1,25 @@
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/* Copyright (c) 2001 Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2018, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* \file describe.h
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* \brief Header file for describe.c.
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**/
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#ifndef TOR_DESCRIBE_H
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#define TOR_DESCRIBE_H
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struct extend_info_t;
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struct node_t;
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struct routerinfo_t;
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struct routerstatus_t;
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const char *extend_info_describe(const struct extend_info_t *ei);
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const char *node_describe(const struct node_t *node);
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const char *router_describe(const struct routerinfo_t *ri);
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const char *routerstatus_describe(const struct routerstatus_t *ri);
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#endif
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@ -133,13 +133,6 @@ static authority_cert_t *legacy_key_certificate = NULL;
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* used by tor-gencert to sign new signing keys and make new key
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* certificates. */
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const char *format_node_description(char *buf,
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const char *id_digest,
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int is_named,
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const char *nickname,
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const tor_addr_t *addr,
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uint32_t addr32h);
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/** Return a readonly string with human readable description
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* of <b>err</b>.
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*/
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@ -3160,170 +3153,6 @@ is_legal_hexdigest(const char *s)
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strspn(s,HEX_CHARACTERS)==HEX_DIGEST_LEN);
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}
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/**
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* Longest allowed output of format_node_description, plus 1 character for
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* NUL. This allows space for:
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* "$FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF~xxxxxxxxxxxxxxxxxxx at"
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* " [ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255]"
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* plus a terminating NUL.
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*/
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#define NODE_DESC_BUF_LEN (MAX_VERBOSE_NICKNAME_LEN+4+TOR_ADDR_BUF_LEN)
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/** Use <b>buf</b> (which must be at least NODE_DESC_BUF_LEN bytes long) to
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* hold a human-readable description of a node with identity digest
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* <b>id_digest</b>, named-status <b>is_named</b>, nickname <b>nickname</b>,
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* and address <b>addr</b> or <b>addr32h</b>.
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*
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* The <b>nickname</b> and <b>addr</b> fields are optional and may be set to
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* NULL. The <b>addr32h</b> field is optional and may be set to 0.
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*
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* Return a pointer to the front of <b>buf</b>.
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*/
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const char *
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format_node_description(char *buf,
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const char *id_digest,
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int is_named,
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const char *nickname,
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const tor_addr_t *addr,
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uint32_t addr32h)
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{
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char *cp;
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if (!buf)
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return "<NULL BUFFER>";
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buf[0] = '$';
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base16_encode(buf+1, HEX_DIGEST_LEN+1, id_digest, DIGEST_LEN);
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cp = buf+1+HEX_DIGEST_LEN;
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if (nickname) {
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buf[1+HEX_DIGEST_LEN] = is_named ? '=' : '~';
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strlcpy(buf+1+HEX_DIGEST_LEN+1, nickname, MAX_NICKNAME_LEN+1);
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cp += strlen(cp);
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}
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if (addr32h || addr) {
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memcpy(cp, " at ", 4);
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cp += 4;
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if (addr) {
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tor_addr_to_str(cp, addr, TOR_ADDR_BUF_LEN, 0);
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} else {
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struct in_addr in;
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in.s_addr = htonl(addr32h);
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tor_inet_ntoa(&in, cp, INET_NTOA_BUF_LEN);
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}
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}
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return buf;
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}
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/** Return a human-readable description of the routerinfo_t <b>ri</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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router_describe(const routerinfo_t *ri)
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{
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static char buf[NODE_DESC_BUF_LEN];
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if (!ri)
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return "<null>";
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return format_node_description(buf,
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ri->cache_info.identity_digest,
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0,
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ri->nickname,
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NULL,
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ri->addr);
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}
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/** Return a human-readable description of the node_t <b>node</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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node_describe(const node_t *node)
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{
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static char buf[NODE_DESC_BUF_LEN];
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const char *nickname = NULL;
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uint32_t addr32h = 0;
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int is_named = 0;
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if (!node)
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return "<null>";
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if (node->rs) {
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nickname = node->rs->nickname;
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is_named = node->rs->is_named;
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addr32h = node->rs->addr;
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} else if (node->ri) {
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nickname = node->ri->nickname;
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addr32h = node->ri->addr;
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}
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return format_node_description(buf,
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node->identity,
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is_named,
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nickname,
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NULL,
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addr32h);
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}
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/** Return a human-readable description of the routerstatus_t <b>rs</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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routerstatus_describe(const routerstatus_t *rs)
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{
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static char buf[NODE_DESC_BUF_LEN];
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if (!rs)
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return "<null>";
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return format_node_description(buf,
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rs->identity_digest,
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rs->is_named,
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rs->nickname,
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NULL,
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rs->addr);
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}
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/** Return a human-readable description of the extend_info_t <b>ei</b>.
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*
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* This function is not thread-safe. Each call to this function invalidates
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* previous values returned by this function.
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*/
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const char *
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extend_info_describe(const extend_info_t *ei)
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{
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static char buf[NODE_DESC_BUF_LEN];
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if (!ei)
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return "<null>";
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return format_node_description(buf,
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ei->identity_digest,
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0,
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ei->nickname,
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&ei->addr,
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0);
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}
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/** Set <b>buf</b> (which must have MAX_VERBOSE_NICKNAME_LEN+1 bytes) to the
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* verbose representation of the identity of <b>router</b>. The format is:
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* A dollar sign.
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* The upper-case hexadecimal encoding of the SHA1 hash of router's identity.
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* A "=" if the router is named (no longer implemented); a "~" if it is not.
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* The router's nickname.
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**/
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void
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router_get_verbose_nickname(char *buf, const routerinfo_t *router)
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{
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buf[0] = '$';
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base16_encode(buf+1, HEX_DIGEST_LEN+1, router->cache_info.identity_digest,
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DIGEST_LEN);
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buf[1+HEX_DIGEST_LEN] = '~';
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strlcpy(buf+1+HEX_DIGEST_LEN+1, router->nickname, MAX_NICKNAME_LEN+1);
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}
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/** Forget that we have issued any router-related warnings, so that we'll
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* warn again if we see the same errors. */
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void
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@ -13,6 +13,7 @@
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#define TOR_ROUTER_H
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#include "lib/testsupport/testsupport.h"
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#include "feature/nodelist/describe.h"
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struct curve25519_keypair_t;
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struct ed25519_keypair_t;
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@ -122,11 +123,6 @@ int is_legal_nickname(const char *s);
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int is_legal_nickname_or_hexdigest(const char *s);
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int is_legal_hexdigest(const char *s);
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const char *router_describe(const routerinfo_t *ri);
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const char *node_describe(const node_t *node);
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const char *routerstatus_describe(const routerstatus_t *ri);
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const char *extend_info_describe(const extend_info_t *ei);
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const char *routerinfo_err_to_string(int err);
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int routerinfo_err_is_transient(int err);
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