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Extract get_declared_family() into its own function.

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This will help as we refactor it.
This commit is contained in:
Nick Mathewson 2018-11-24 12:07:54 -05:00
parent 0a0c612b79
commit f82eb6269f
1 changed files with 66 additions and 48 deletions
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114
src/feature/relay/router.c
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@ -1807,6 +1807,71 @@ router_check_descriptor_address_consistency(uint32_t ipv4h_desc_addr)
CONN_TYPE_DIR_LISTENER);
}
/**
* Return a new smartlist containing the family members configured in
* <b>options</b>. Warn about invalid or missing entries. Return NULL
* if this relay should not declare a family.
**/
static smartlist_t *
get_declared_family(const or_options_t *options)
{
if (!options->MyFamily)
return NULL;
if (options->BridgeRelay)
return NULL;
if (!warned_nonexistent_family)
warned_nonexistent_family = smartlist_new();
smartlist_t *declared_family = smartlist_new();
config_line_t *family;
for (family = options->MyFamily; family; family = family->next) {
char *name = family->value;
const node_t *member;
if (!strcasecmp(name, options->Nickname))
continue; /* Don't list ourself, that's redundant */
else
member = node_get_by_nickname(name, 0);
if (!member) {
int is_legal = is_legal_nickname_or_hexdigest(name);
if (!smartlist_contains_string(warned_nonexistent_family, name) &&
!is_legal_hexdigest(name)) {
if (is_legal)
log_warn(LD_CONFIG,
"I have no descriptor for the router named \"%s\" in my "
"declared family; I'll use the nickname as is, but "
"this may confuse clients.", name);
else
log_warn(LD_CONFIG, "There is a router named \"%s\" in my "
"declared family, but that isn't a legal nickname. "
"Skipping it.", escaped(name));
smartlist_add_strdup(warned_nonexistent_family, name);
}
if (is_legal) {
smartlist_add_strdup(declared_family, name);
}
} else if (router_digest_is_me(member->identity)) {
/* Don't list ourself in our own family; that's redundant */
/* XXX shouldn't be possible */
} else {
char *fp = tor_malloc(HEX_DIGEST_LEN+2);
fp[0] = '$';
base16_encode(fp+1,HEX_DIGEST_LEN+1,
member->identity, DIGEST_LEN);
smartlist_add(declared_family, fp);
if (smartlist_contains_string(warned_nonexistent_family, name))
smartlist_string_remove(warned_nonexistent_family, name);
}
}
/* remove duplicates from the list */
smartlist_sort_strings(declared_family);
smartlist_uniq_strings(declared_family);
return declared_family;
}
/** Build a fresh routerinfo, signed server descriptor, and extra-info document
* for this OR. Set r to the generated routerinfo, e to the generated
* extra-info document. Return 0 on success, -1 on temporary error. Failure to
@ -1921,54 +1986,7 @@ router_build_fresh_descriptor(routerinfo_t **r, extrainfo_t **e)
tor_free(p_tmp);
}
if (options->MyFamily && ! options->BridgeRelay) {
if (!warned_nonexistent_family)
warned_nonexistent_family = smartlist_new();
ri->declared_family = smartlist_new();
config_line_t *family;
for (family = options->MyFamily; family; family = family->next) {
char *name = family->value;
const node_t *member;
if (!strcasecmp(name, options->Nickname))
continue; /* Don't list ourself, that's redundant */
else
member = node_get_by_nickname(name, 0);
if (!member) {
int is_legal = is_legal_nickname_or_hexdigest(name);
if (!smartlist_contains_string(warned_nonexistent_family, name) &&
!is_legal_hexdigest(name)) {
if (is_legal)
log_warn(LD_CONFIG,
"I have no descriptor for the router named \"%s\" in my "
"declared family; I'll use the nickname as is, but "
"this may confuse clients.", name);
else
log_warn(LD_CONFIG, "There is a router named \"%s\" in my "
"declared family, but that isn't a legal nickname. "
"Skipping it.", escaped(name));
smartlist_add_strdup(warned_nonexistent_family, name);
}
if (is_legal) {
smartlist_add_strdup(ri->declared_family, name);
}
} else if (router_digest_is_me(member->identity)) {
/* Don't list ourself in our own family; that's redundant */
/* XXX shouldn't be possible */
} else {
char *fp = tor_malloc(HEX_DIGEST_LEN+2);
fp[0] = '$';
base16_encode(fp+1,HEX_DIGEST_LEN+1,
member->identity, DIGEST_LEN);
smartlist_add(ri->declared_family, fp);
if (smartlist_contains_string(warned_nonexistent_family, name))
smartlist_string_remove(warned_nonexistent_family, name);
}
}
/* remove duplicates from the list */
smartlist_sort_strings(ri->declared_family);
smartlist_uniq_strings(ri->declared_family);
}
ri->declared_family = get_declared_family(options);
/* Now generate the extrainfo. */
ei = tor_malloc_zero(sizeof(extrainfo_t));