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r17911@catbus: nickm | 2008-02-05 15:53:22 -0500

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Fix a potential bug that would make authorities fail to vote under bizarre circumstances that probably never happened.


svn:r13385
This commit is contained in:
Nick Mathewson 2008-02-05 21:39:36 +00:00
parent e09c207c3c
commit 83e740fa91
3 changed files with 15 additions and 14 deletions
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13
src/or/dirserv.c
View File

@ -1868,6 +1868,7 @@ routerstatus_format_entry(char *buf, size_t buf_len,
if (first_line_only)
return 0;
cp = buf + strlen(buf);
/* NOTE: Whenever this list expands, be sure to increase MAX_FLAG_LINE_LEN*/
r = tor_snprintf(cp, buf_len - (cp-buf),
"s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
/* These must stay in alphabetical order. */
@ -1890,7 +1891,9 @@ routerstatus_format_entry(char *buf, size_t buf_len,
}
cp += strlen(cp);
if (version) {
/* length of "opt v \n" */
#define V_LINE_OVERHEAD 7
if (version && strlen(version) < MAX_V_LINE_LEN - V_LINE_OVERHEAD) {
if (tor_snprintf(cp, buf_len - (cp-buf), "opt v %s\n", version)<0) {
log_warn(LD_BUG, "Unable to print router version.");
return -1;
@ -2280,17 +2283,15 @@ dirserv_generate_networkstatus_vote_obj(crypto_pk_env_t *private_key,
static cached_dir_t *
generate_v2_networkstatus_opinion(void)
{
/** Longest status flag name that we generate. */
#define LONGEST_STATUS_FLAG_NAME_LEN 9
/** Maximum number of status flags we'll apply to one router. */
#define N_STATUS_FLAGS 10
/** Amount of space to allocate for each entry. (r line and s line.) */
#define RS_ENTRY_LEN \
( /* first line */ \
MAX_NICKNAME_LEN+BASE64_DIGEST_LEN*2+ISO_TIME_LEN+INET_NTOA_BUF_LEN+ \
5*2 /* ports */ + 10 /* punctuation */ + \
/* second line */ \
(LONGEST_STATUS_FLAG_NAME_LEN+1)*N_STATUS_FLAGS + 2)
(MAX_FLAG_LINE_LEN) + \
/* third line */ \
(MAX_V_LINE_LEN))
cached_dir_t *r = NULL;
size_t len, identity_pkey_len;

10
src/or/dirvote.c
View File

@ -36,19 +36,15 @@ char *
format_networkstatus_vote(crypto_pk_env_t *private_signing_key,
networkstatus_t *v3_ns)
{
/** Longest status flag name that we generate. */
#define LONGEST_STATUS_FLAG_NAME_LEN 9
/** Maximum number of status flags we'll apply to one router. */
#define N_STATUS_FLAGS 10
/** Amount of space to allocate for each entry: r, s, and v lines. */
#define RS_ENTRY_LEN \
( /* first line */ \
MAX_NICKNAME_LEN+BASE64_DIGEST_LEN*2+ISO_TIME_LEN+INET_NTOA_BUF_LEN+ \
5*2 /* ports */ + 10 /* punctuation */ + \
/* second line */ \
(LONGEST_STATUS_FLAG_NAME_LEN+1)*N_STATUS_FLAGS + 2 + \
/* v line. XXXX020 not accurate! */ \
80 \
MAX_FLAG_LINE_LEN + \
/* v line. */ \
MAX_V_LINE_LEN \
)
size_t len;

6
src/or/or.h
View File

@ -3049,7 +3049,11 @@ download_status_is_ready(download_status_t *dls, time_t now,
}
/********************************* dirserv.c ***************************/
/** Maximum allowable length of a version line in a networkstatus. */
#define MAX_V_LINE_LEN 128
/** Length of "r Authority BadDirectory BadExit Exit Fast Guard HSDir Named
* Running Stable Unnamed V2Dir Valid\n". */
#define MAX_FLAG_LINE_LEN 96
#define UNNAMED_ROUTER_NICKNAME "Unnamed"
int connection_dirserv_flushed_some(dir_connection_t *conn);