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Added log_level option to configuration file, which switches off log at each connection

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This commit is contained in:
Yves Rutschle 2015-12-15 15:51:18 +01:00
parent 24612835c3
commit 2cb424c646
7 changed files with 28 additions and 14 deletions
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3
ChangeLog
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@ -9,6 +9,9 @@ vNEXT:
no longer required, 'name' field can now contain no longer required, 'name' field can now contain
'sni' or 'regex', with corresponding options (see 'sni' or 'regex', with corresponding options (see
example.org) example.org)
Added 'log_level' option to each protocol, which
allows to turn off generation of log at each
connection.
v1.17: 09MAR2015 v1.17: 09MAR2015
Support RFC5952-style IPv6 addresses, e.g. [::]:443. Support RFC5952-style IPv6 addresses, e.g. [::]:443.

2
basic.cfg
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@ -23,7 +23,7 @@ protocols:
{ name: "openvpn"; host: "localhost"; port: "1194"; }, { name: "openvpn"; host: "localhost"; port: "1194"; },
{ name: "xmpp"; host: "localhost"; port: "5222"; }, { name: "xmpp"; host: "localhost"; port: "5222"; },
{ name: "http"; host: "localhost"; port: "80"; }, { name: "http"; host: "localhost"; port: "80"; },
{ name: "ssl"; host: "localhost"; port: "443"; }, { name: "ssl"; host: "localhost"; port: "443"; log_level: 0; },
{ name: "anyprot"; host: "localhost"; port: "443"; } { name: "anyprot"; host: "localhost"; port: "443"; }
); );

3
common.c
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@ -431,6 +431,9 @@ void log_connection(struct connection *cnx)
local[MAX_NAMELENGTH], target[MAX_NAMELENGTH]; local[MAX_NAMELENGTH], target[MAX_NAMELENGTH];
int res; int res;
if (cnx->proto->log_level < 1)
return;
addr.ai_addr = (struct sockaddr*)&ss; addr.ai_addr = (struct sockaddr*)&ss;
addr.ai_addrlen = sizeof(ss); addr.ai_addrlen = sizeof(ss);

4
example.cfg
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@ -46,8 +46,8 @@ protocols:
{ name: "ssh"; service: "ssh"; host: "localhost"; port: "22"; }, { name: "ssh"; service: "ssh"; host: "localhost"; port: "22"; },
{ name: "http"; host: "localhost"; port: "80"; }, { name: "http"; host: "localhost"; port: "80"; },
{ name: "sni"; host: "localhost"; port: "993"; sni_hostnames: [ "mail.rutschle.net", "mail.englishintoulouse.com" ]; }, { name: "sni"; host: "localhost"; port: "993"; sni_hostnames: [ "mail.rutschle.net", "mail.englishintoulouse.com" ]; log_level: 0; },
{ name: "sni"; host: "localhost"; port: "xmpp-client"; sni_hostnames: [ "im.rutschle.net", "im.englishintoulouse.com" ]; }, { name: "sni"; host: "localhost"; port: "xmpp-client"; sni_hostnames: [ "im.rutschle.net", "im.englishintoulouse.com" ]; log_level: 0;},
# OpenVPN # OpenVPN
{ name: "regex"; host: "localhost"; port: "1194"; regex_patterns: [ "^\x00[\x0D-\xFF]$", "^\x00[\x0D-\xFF]\x38" ]; }, { name: "regex"; host: "localhost"; port: "1194"; regex_patterns: [ "^\x00[\x0D-\xFF]$", "^\x00[\x0D-\xFF]\x38" ]; },

20
probe.c
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@ -41,16 +41,16 @@ static int is_true(const char *p, int len, struct proto* proto) { return 1; }
/* Table of protocols that have a built-in probe /* Table of protocols that have a built-in probe
*/ */
static struct proto builtins[] = { static struct proto builtins[] = {
/* description service saddr probe */ /* description service saddr log_level probe */
{ "ssh", "sshd", NULL, is_ssh_protocol}, { "ssh", "sshd", NULL, 1, is_ssh_protocol},
{ "openvpn", NULL, NULL, is_openvpn_protocol }, { "openvpn", NULL, NULL, 1, is_openvpn_protocol },
{ "tinc", NULL, NULL, is_tinc_protocol }, { "tinc", NULL, NULL, 1, is_tinc_protocol },
{ "xmpp", NULL, NULL, is_xmpp_protocol }, { "xmpp", NULL, NULL, 1, is_xmpp_protocol },
{ "http", NULL, NULL, is_http_protocol }, { "http", NULL, NULL, 1, is_http_protocol },
{ "ssl", NULL, NULL, is_tls_protocol }, { "ssl", NULL, NULL, 1, is_tls_protocol },
{ "tls", NULL, NULL, is_tls_protocol }, { "tls", NULL, NULL, 1, is_tls_protocol },
{ "adb", NULL, NULL, is_adb_protocol }, { "adb", NULL, NULL, 1, is_adb_protocol },
{ "anyprot", NULL, NULL, is_true } { "anyprot", NULL, NULL, 1, is_true }
}; };
static struct proto *protocols; static struct proto *protocols;

3
probe.h
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@ -20,6 +20,9 @@ struct proto {
const char* description; /* a string that says what it is (for logging and command-line parsing) */ const char* description; /* a string that says what it is (for logging and command-line parsing) */
const char* service; /* service name to do libwrap checks */ const char* service; /* service name to do libwrap checks */
struct addrinfo *saddr; /* list of addresses to try and switch that protocol */ struct addrinfo *saddr; /* list of addresses to try and switch that protocol */
int log_level; /* 0: No logging of connection
* 1: Log incoming connection
*/
/* function to probe that protocol; parameters are buffer and length /* function to probe that protocol; parameters are buffer and length
* containing the data to probe, and a pointer to the protocol structure */ * containing the data to probe, and a pointer to the protocol structure */

7
sslh-main.c
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@ -119,10 +119,11 @@ static void printsettings(void)
for (p = get_first_protocol(); p; p = p->next) { for (p = get_first_protocol(); p; p = p->next) {
fprintf(stderr, fprintf(stderr,
"%s addr: %s. libwrap service: %s family %d %d\n", "%s addr: %s. libwrap service: %s log_level: %d family %d %d\n",
p->description, p->description,
sprintaddr(buf, sizeof(buf), p->saddr), sprintaddr(buf, sizeof(buf), p->saddr),
p->service, p->service,
p->log_level,
p->saddr->ai_family, p->saddr->ai_family,
p->saddr->ai_addr->sa_family); p->saddr->ai_addr->sa_family);
} }
@ -271,6 +272,10 @@ static int config_protocols(config_t *config, struct proto **prots)
p->description = name; p->description = name;
config_setting_lookup_string(prot, "service", &(p->service)); config_setting_lookup_string(prot, "service", &(p->service));
if (config_setting_lookup_int(prot, "log_level", &p->log_level) == CONFIG_FALSE) {
p->log_level = 1;
}
resolve_split_name(&(p->saddr), hostname, port); resolve_split_name(&(p->saddr), hostname, port);
p->probe = get_probe(name); p->probe = get_probe(name);