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authorNikos Mavrogiannopoulos <nmav@gnutls.org>2013-11-08 22:14:07 +0100
committerNikos Mavrogiannopoulos <nmav@gnutls.org>2013-11-08 22:17:10 +0100
commit76c93d23c073ef8b885503b7d28a31ffe2add6d8 (patch)
tree1dd2d22a197bc40c5330e516969a7cb1ae9bc96f /src/crywrap
parent559a144f6bbcbb611453f82e655dd7438c14d1a7 (diff)
downloadgnutls-76c93d23c073ef8b885503b7d28a31ffe2add6d8.tar.gz
reindented code
Diffstat (limited to 'src/crywrap')
-rw-r--r--src/crywrap/crywrap.c1496
-rw-r--r--src/crywrap/crywrap.h48
-rw-r--r--src/crywrap/primes.h9
3 files changed, 771 insertions, 782 deletions
diff --git a/src/crywrap/crywrap.c b/src/crywrap/crywrap.c
index b0b0799a22..f1b822cb6d 100644
--- a/src/crywrap/crywrap.c
+++ b/src/crywrap/crywrap.c
@@ -52,53 +52,52 @@
#include "crywrap.h"
#include "primes.h"
-static int system_log(const char* fmt, ...)
+static int system_log(const char *fmt, ...)
#ifdef __GNUC__
- __attribute__ ((format (printf, 1, 2)))
+ __attribute__ ((format(printf, 1, 2)))
#endif
-;
+ ;
-static int system_log_error(const char* fmt, ...)
+static int system_log_error(const char *fmt, ...)
#ifdef __GNUC__
- __attribute__ ((format (printf, 1, 2)))
+ __attribute__ ((format(printf, 1, 2)))
#endif
-;
+ ;
-static int debug_log(const char* fmt, ...)
+static int debug_log(const char *fmt, ...)
#ifdef __GNUC__
- __attribute__ ((format (printf, 1, 2)))
+ __attribute__ ((format(printf, 1, 2)))
#endif
-;
+ ;
-typedef int (*cry_log_func)(const char *format, ...)
+typedef int (*cry_log_func) (const char *format, ...)
#ifdef __GNUC__
- __attribute__ ((format (printf, 1, 2)))
+ __attribute__ ((format(printf, 1, 2)))
#endif
-;
+ ;
static cry_log_func cry_log = system_log;
static cry_log_func cry_error = system_log_error;
-static void
-tls_audit_log_func (gnutls_session_t session, const char *str)
+static void tls_audit_log_func(gnutls_session_t session, const char *str)
{
- char peer_name[NI_MAXHOST] = "Unknown";
- gnutls_transport_ptr_t r, s;
- struct sockaddr_storage faddr;
- socklen_t socklen = sizeof (struct sockaddr_storage);
-
- if (session != NULL)
- {
- gnutls_transport_get_ptr2(session, &r, &s);
-
- /* Log the connection */
- if (getpeername ((int)(long)r, (struct sockaddr *)&faddr, &socklen) != 0)
- cry_error ("getpeername(): %s", strerror (errno));
-
- cry_log ("Peer %s: %s", peer_name, str);
- }
- else
- cry_log ("%s", str);
+ char peer_name[NI_MAXHOST] = "Unknown";
+ gnutls_transport_ptr_t r, s;
+ struct sockaddr_storage faddr;
+ socklen_t socklen = sizeof(struct sockaddr_storage);
+
+ if (session != NULL) {
+ gnutls_transport_get_ptr2(session, &r, &s);
+
+ /* Log the connection */
+ if (getpeername
+ ((int) (long) r, (struct sockaddr *) &faddr,
+ &socklen) != 0)
+ cry_error("getpeername(): %s", strerror(errno));
+
+ cry_log("Peer %s: %s", peer_name, str);
+ } else
+ cry_log("%s", str);
}
@@ -118,7 +117,8 @@ static const char *pidfile = _CRYWRAP_PIDFILE; /**< File to log our PID
*/
static gnutls_certificate_server_credentials cred;
static gnutls_dh_params dh_params; /**< GNUTLS DH parameters. */
-static gnutls_datum dh_file = { (void*)_crywrap_prime_dh_1024, sizeof(_crywrap_prime_dh_1024) }; /**< Diffie Hellman parameters */
+static gnutls_datum dh_file = { (void *) _crywrap_prime_dh_1024, sizeof(_crywrap_prime_dh_1024) };
+ /**< Diffie Hellman parameters */
/** Bugreport address.
* Used by the argp suite.
@@ -138,36 +138,41 @@ static char *pem_key = NULL;
* Used by the argp suite.
*/
static const struct argp_option _crywrap_options[] = {
- {NULL, 0, NULL, 0, "Mandatory options:", 1},
- {"destination", 'd', "IP/PORT", 0, "IP and port to connect to", 1},
- {"listen", 'l', "IP/PORT", 0, "IP and port to listen on", 1},
- {NULL, 0, NULL, 0, "TLS certificates:", 2},
- {"key", 'k', "FILE", 0, "Server key", 2},
- {"cert", 'c', "FILE", 0, "Server certificate", 2},
- {"ca", 'z', "FILE", 0, "CA certificate", 2},
- {"anon", 'a', NULL, 0, "Enable anonymous authentication (no certificates)", 2},
- {"verify", 'v', "LEVEL", OPTION_ARG_OPTIONAL,
- "Verify clients certificate (1: verify if exists, 2: require)", 2},
- {NULL, 0, NULL, 0, "Other options:", 3},
- {"dhparams", 'r', "FILE", 0, "Diffie Hellman (PKCS #3) parameters file", 3},
- {"user", 'u', "UID", 0, "User ID to run as", 3},
- {"pidfile", 'P', "PATH", 0, "File to log the PID into", 3},
- {"priority", 'p', "STRING", 0, "GnuTLS ciphersuite priority string", 3},
- {"inetd", 'i', NULL, 0, "Enable inetd mode", 3},
- {"debug", 'D', NULL, 0, "Run the server into foreground", 3},
- {0, 0, 0, 0, NULL, 0}
+ {NULL, 0, NULL, 0, "Mandatory options:", 1},
+ {"destination", 'd', "IP/PORT", 0, "IP and port to connect to", 1},
+ {"listen", 'l', "IP/PORT", 0, "IP and port to listen on", 1},
+ {NULL, 0, NULL, 0, "TLS certificates:", 2},
+ {"key", 'k', "FILE", 0, "Server key", 2},
+ {"cert", 'c', "FILE", 0, "Server certificate", 2},
+ {"ca", 'z', "FILE", 0, "CA certificate", 2},
+ {"anon", 'a', NULL, 0,
+ "Enable anonymous authentication (no certificates)", 2},
+ {"verify", 'v', "LEVEL", OPTION_ARG_OPTIONAL,
+ "Verify clients certificate (1: verify if exists, 2: require)",
+ 2},
+ {NULL, 0, NULL, 0, "Other options:", 3},
+ {"dhparams", 'r', "FILE", 0,
+ "Diffie Hellman (PKCS #3) parameters file", 3},
+ {"user", 'u', "UID", 0, "User ID to run as", 3},
+ {"pidfile", 'P', "PATH", 0, "File to log the PID into", 3},
+ {"priority", 'p', "STRING", 0,
+ "GnuTLS ciphersuite priority string", 3},
+ {"inetd", 'i', NULL, 0, "Enable inetd mode", 3},
+ {"debug", 'D', NULL, 0, "Run the server into foreground", 3},
+ {0, 0, 0, 0, NULL, 0}
};
-static error_t _crywrap_config_parse_opt (int key, char *arg,
- struct argp_state *state);
+static error_t _crywrap_config_parse_opt(int key, char *arg,
+ struct argp_state *state);
/** The main argp structure for Crywrap.
*/
static const struct argp _crywrap_argp =
- {_crywrap_options, _crywrap_config_parse_opt, 0,
- __CRYWRAP__ " -- Security for the masses\v"
- "The --destination option is mandatory, as is --listen if --inetd "
- "was not used.",
- NULL, NULL, NULL};
+ { _crywrap_options, _crywrap_config_parse_opt, 0,
+ __CRYWRAP__ " -- Security for the masses\v"
+ "The --destination option is mandatory, as is --listen if --inetd "
+ "was not used.",
+ NULL, NULL, NULL
+};
/** @} */
@@ -177,44 +182,41 @@ static const struct argp _crywrap_argp =
/** SIGCHLD handler
*/
-static void
-_crywrap_sigchld_handler (int sig)
+static void _crywrap_sigchld_handler(int sig)
{
-pid_t child;
-int status;
+ pid_t child;
+ int status;
- while ((child = waitpid (-1, &status, WNOHANG)) > (pid_t) 0)
- signal (sig, _crywrap_sigchld_handler);
+ while ((child = waitpid(-1, &status, WNOHANG)) > (pid_t) 0)
+ signal(sig, _crywrap_sigchld_handler);
}
/* Helper functions to load a certificate and key
* files into memory.
*/
-static gnutls_datum_t
-load_file (const char *file)
+static gnutls_datum_t load_file(const char *file)
{
- gnutls_datum_t loaded_file = { NULL, 0 };
+ gnutls_datum_t loaded_file = { NULL, 0 };
- gnutls_load_file(file, &loaded_file);
+ gnutls_load_file(file, &loaded_file);
- return loaded_file;
+ return loaded_file;
}
/** Generic signal handler.
* This one removes the #pidfile, if necessary.
*/
-static void
-_crywrap_sighandler (int sig)
+static void _crywrap_sighandler(int sig)
{
- if (getpid () == main_pid)
- {
- cry_log ("Exiting on signal %d", sig);
- if (pidfile && *pidfile)
- unlink (pidfile);
- closelog ();
- exit (0);
- }
+ if (getpid() == main_pid) {
+ cry_log("Exiting on signal %d", sig);
+ if (pidfile && *pidfile)
+ unlink(pidfile);
+ closelog();
+ exit(0);
+ }
}
+
/** @} */
/** @defgroup parsing Option parsing
@@ -228,22 +230,21 @@ _crywrap_sighandler (int sig)
*
* @returns The purt number, or -1 on error.
*/
-static int
-_crywrap_port_get (const char *serv)
+static int _crywrap_port_get(const char *serv)
{
- int port;
- struct servent *se;
+ int port;
+ struct servent *se;
- if (!serv)
- return -1;
+ if (!serv)
+ return -1;
- se = getservbyname (serv, "tcp");
- if (!se)
- port = atoi (serv);
- else
- port = ntohs (se->s_port);
+ se = getservbyname(serv, "tcp");
+ if (!se)
+ port = atoi(serv);
+ else
+ port = ntohs(se->s_port);
- return port;
+ return port;
}
/** Address resolver.
@@ -255,58 +256,54 @@ _crywrap_port_get (const char *serv)
* @returns Zero on success, -1 on error.
*/
static int
-_crywrap_addr_get (const char *hostname, struct sockaddr_storage **addr)
+_crywrap_addr_get(const char *hostname, struct sockaddr_storage **addr)
{
- struct addrinfo *res;
- struct addrinfo hints;
- ssize_t len;
- char *lz = NULL;
-
- if (idna_to_ascii_lz (hostname, &lz, 0) != IDNA_SUCCESS)
- return -1;
-
- memset (&hints, 0, sizeof (hints));
- hints.ai_family = PF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_protocol = IPPROTO_IP;
- *addr = calloc (1, sizeof (struct sockaddr_storage));
- if (*addr == NULL)
- {
- free(lz);
- return -1;
- }
-
- if (getaddrinfo (lz, NULL, &hints, &res) != 0)
- {
- free (lz);
- return -1;
- }
-
- free (lz);
-
- switch (res->ai_addr->sa_family)
- {
- case AF_INET:
- len = sizeof (struct sockaddr_in);
- break;
- case AF_INET6:
- len = sizeof (struct sockaddr_in6);
- break;
- default:
- freeaddrinfo (res);
- return -1;
- }
-
- if (len < (ssize_t)res->ai_addrlen)
- {
- freeaddrinfo (res);
- return -1;
- }
-
- memcpy (*addr, res->ai_addr, res->ai_addrlen);
- freeaddrinfo (res);
-
- return 0;
+ struct addrinfo *res;
+ struct addrinfo hints;
+ ssize_t len;
+ char *lz = NULL;
+
+ if (idna_to_ascii_lz(hostname, &lz, 0) != IDNA_SUCCESS)
+ return -1;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_IP;
+ *addr = calloc(1, sizeof(struct sockaddr_storage));
+ if (*addr == NULL) {
+ free(lz);
+ return -1;
+ }
+
+ if (getaddrinfo(lz, NULL, &hints, &res) != 0) {
+ free(lz);
+ return -1;
+ }
+
+ free(lz);
+
+ switch (res->ai_addr->sa_family) {
+ case AF_INET:
+ len = sizeof(struct sockaddr_in);
+ break;
+ case AF_INET6:
+ len = sizeof(struct sockaddr_in6);
+ break;
+ default:
+ freeaddrinfo(res);
+ return -1;
+ }
+
+ if (len < (ssize_t) res->ai_addrlen) {
+ freeaddrinfo(res);
+ return -1;
+ }
+
+ memcpy(*addr, res->ai_addr, res->ai_addrlen);
+ freeaddrinfo(res);
+
+ return 0;
}
/** Parse a HOST/IP pair.
@@ -321,151 +318,166 @@ _crywrap_addr_get (const char *hostname, struct sockaddr_storage **addr)
* @returns Zero on success, -1 on error.
*/
static int
-_crywrap_parse_ip (const char *ip, in_port_t *port,
- struct sockaddr_storage **addr, char **host)
+_crywrap_parse_ip(const char *ip, in_port_t * port,
+ struct sockaddr_storage **addr, char **host)
{
- char *s_ip;
- char *tmp;
+ char *s_ip;
+ char *tmp;
- tmp = strchr (ip, '/');
+ tmp = strchr(ip, '/');
- if (!tmp)
- return -1;
+ if (!tmp)
+ return -1;
- if (tmp == ip)
- {
- s_ip = strdup ("0.0.0.0");
- *port = (in_port_t)_crywrap_port_get (&ip[1]);
- }
- else
- {
- *port = (in_port_t)_crywrap_port_get (&tmp[1]);
- s_ip = strndup (ip, tmp - ip);
- }
+ if (tmp == ip) {
+ s_ip = strdup("0.0.0.0");
+ *port = (in_port_t) _crywrap_port_get(&ip[1]);
+ } else {
+ *port = (in_port_t) _crywrap_port_get(&tmp[1]);
+ s_ip = strndup(ip, tmp - ip);
+ }
- if (!*port)
- return -1;
+ if (!*port)
+ return -1;
- if (host)
- *host = strdup (s_ip);
+ if (host)
+ *host = strdup(s_ip);
- return _crywrap_addr_get (s_ip, addr);
+ return _crywrap_addr_get(s_ip, addr);
}
/** Argument parsing routine.
* Used by the argp suite.
*/
static error_t
-_crywrap_config_parse_opt (int key, char *arg, struct argp_state *state)
+_crywrap_config_parse_opt(int key, char *arg, struct argp_state *state)
{
- crywrap_config_t *cfg = (crywrap_config_t *)state->input;
- int ret;
-
- switch (key)
- {
- case 'D':
- cfg->debug = 1;
- cry_log = debug_log;
- cry_error = debug_log;
- break;
- case 'd':
- if (_crywrap_parse_ip (arg, &cfg->dest.port, &cfg->dest.addr,
- &cfg->dest.host) < 0)
- argp_error (state, "Could not resolve address: `%s'", arg);
- break;
- case 'l':
- if (_crywrap_parse_ip (arg, &cfg->listen.port,
- &cfg->listen.addr, NULL) < 0)
- argp_error (state, "Could not resolve address: `%s'", arg);
- break;
- case 'u':
- cfg->uid = atoi (arg);
- break;
- case 'P':
- if (arg && *arg)
- cfg->pidfile = strdup (arg);
- else
- cfg->pidfile = NULL;
- break;
- case 'r':
- if (arg && *arg)
- {
- dh_file = load_file(arg);
- if (dh_file.data == NULL)
- argp_error (state, "error loading Diffie Hellman parameters file: %s.", arg);
- }
- break;
- case 'p':
- if (arg && *arg)
- {
- const char* pos;
- ret = gnutls_priority_init(&cfg->priority, arg, &pos);
- if (ret < 0)
- argp_error (state, "error in priority string at: %s.", pos);
- }
- break;
- case 'c':
- if (arg && *arg)
- pem_cert = strdup (arg);
- break;
- case 'k':
- if (arg && *arg)
- pem_key = strdup (arg);
- break;
-
- break;
- case 'i':
- cfg->inetd = 1;
- break;
- case 'a':
- {
- const char* pos;
- ret = gnutls_priority_init(&cfg->priority, "NORMAL:+ANON-ECDH:+ANON-DH", &pos);
- if (ret < 0)
- argp_error (state, "error in priority string at: %s.", pos);
- }
- cfg->verify = 0;
- cfg->anon = 1;
- break;
- case 'v':
- cfg->verify = (arg) ? atoi (arg) : 1;
- break;
- case 'z':
- ret = gnutls_certificate_set_x509_trust_file (cred, arg,
- GNUTLS_X509_FMT_PEM);
- if (ret < 0)
- argp_error (state, "error reading X.509 CA file: %s.", gnutls_strerror(ret));
- break;
-
- case ARGP_KEY_END:
- if (!cfg->inetd)
- {
- if (!cfg->listen.addr || !cfg->dest.addr)
- argp_error
- (state,
- "a listening and a destination address must be set!");
+ crywrap_config_t *cfg = (crywrap_config_t *) state->input;
+ int ret;
+
+ switch (key) {
+ case 'D':
+ cfg->debug = 1;
+ cry_log = debug_log;
+ cry_error = debug_log;
+ break;
+ case 'd':
+ if (_crywrap_parse_ip
+ (arg, &cfg->dest.port, &cfg->dest.addr,
+ &cfg->dest.host) < 0)
+ argp_error(state,
+ "Could not resolve address: `%s'", arg);
+ break;
+ case 'l':
+ if (_crywrap_parse_ip(arg, &cfg->listen.port,
+ &cfg->listen.addr, NULL) < 0)
+ argp_error(state,
+ "Could not resolve address: `%s'", arg);
+ break;
+ case 'u':
+ cfg->uid = atoi(arg);
+ break;
+ case 'P':
+ if (arg && *arg)
+ cfg->pidfile = strdup(arg);
+ else
+ cfg->pidfile = NULL;
+ break;
+ case 'r':
+ if (arg && *arg) {
+ dh_file = load_file(arg);
+ if (dh_file.data == NULL)
+ argp_error(state,
+ "error loading Diffie Hellman parameters file: %s.",
+ arg);
+ }
+ break;
+ case 'p':
+ if (arg && *arg) {
+ const char *pos;
+ ret =
+ gnutls_priority_init(&cfg->priority, arg,
+ &pos);
+ if (ret < 0)
+ argp_error(state,
+ "error in priority string at: %s.",
+ pos);
+ }
+ break;
+ case 'c':
+ if (arg && *arg)
+ pem_cert = strdup(arg);
+ break;
+ case 'k':
+ if (arg && *arg)
+ pem_key = strdup(arg);
+ break;
+
+ break;
+ case 'i':
+ cfg->inetd = 1;
+ break;
+ case 'a':
+ {
+ const char *pos;
+ ret =
+ gnutls_priority_init(&cfg->priority,
+ "NORMAL:+ANON-ECDH:+ANON-DH",
+ &pos);
+ if (ret < 0)
+ argp_error(state,
+ "error in priority string at: %s.",
+ pos);
+ }
+ cfg->verify = 0;
+ cfg->anon = 1;
+ break;
+ case 'v':
+ cfg->verify = (arg) ? atoi(arg) : 1;
+ break;
+ case 'z':
+ ret = gnutls_certificate_set_x509_trust_file(cred, arg,
+ GNUTLS_X509_FMT_PEM);
+ if (ret < 0)
+ argp_error(state,
+ "error reading X.509 CA file: %s.",
+ gnutls_strerror(ret));
+ break;
+
+ case ARGP_KEY_END:
+ if (!cfg->inetd) {
+ if (!cfg->listen.addr || !cfg->dest.addr)
+ argp_error
+ (state,
+ "a listening and a destination address must be set!");
+ } else if (!cfg->dest.addr)
+ argp_error(state,
+ "a destination address must be set!");
+ if (cfg->anon)
+ break;
+ if (pem_cert == NULL || pem_key == NULL)
+ ret =
+ gnutls_certificate_set_x509_key_file(cred,
+ _CRYWRAP_PEMFILE,
+ _CRYWRAP_PEMFILE,
+ GNUTLS_X509_FMT_PEM);
+ else
+ ret =
+ gnutls_certificate_set_x509_key_file(cred,
+ pem_cert,
+ pem_key,
+ GNUTLS_X509_FMT_PEM);
+
+ if (ret < 0)
+ argp_error(state,
+ "Error reading X.509 key or certificate file: %s",
+ gnutls_strerror(ret));
+ break;
+ default:
+ return ARGP_ERR_UNKNOWN;
}
- else
- if (!cfg->dest.addr)
- argp_error (state, "a destination address must be set!");
- if (cfg->anon)
- break;
- if (pem_cert == NULL || pem_key == NULL)
- ret = gnutls_certificate_set_x509_key_file (cred, _CRYWRAP_PEMFILE,
- _CRYWRAP_PEMFILE,
- GNUTLS_X509_FMT_PEM);
- else
- ret = gnutls_certificate_set_x509_key_file (cred, pem_cert, pem_key,
- GNUTLS_X509_FMT_PEM);
-
- if (ret < 0)
- argp_error (state, "Error reading X.509 key or certificate file: %s", gnutls_strerror(ret));
- break;
- default:
- return ARGP_ERR_UNKNOWN;
- }
-
- return 0;
+
+ return 0;
}
/** Configuration parsing.
@@ -474,33 +486,33 @@ _crywrap_config_parse_opt (int key, char *arg, struct argp_state *state)
*
* @note Does not return if an error occurred.
*/
-static crywrap_config_t *
-_crywrap_config_parse (int argc, char **argv)
+static crywrap_config_t *_crywrap_config_parse(int argc, char **argv)
{
- crywrap_config_t *config =
- (crywrap_config_t *)malloc (sizeof (crywrap_config_t));
+ crywrap_config_t *config =
+ (crywrap_config_t *) malloc(sizeof(crywrap_config_t));
- if (config == NULL)
- return NULL;
+ if (config == NULL)
+ return NULL;
- config->listen.port = 0;
- config->listen.addr = NULL;
- config->dest.port = 0;
- config->dest.addr = NULL;
- config->priority = NULL;
- config->uid = _CRYWRAP_UID;
- config->pidfile = _CRYWRAP_PIDFILE;
- config->inetd = 0;
- config->anon = 0;
- config->verify = 0;
+ config->listen.port = 0;
+ config->listen.addr = NULL;
+ config->dest.port = 0;
+ config->dest.addr = NULL;
+ config->priority = NULL;
+ config->uid = _CRYWRAP_UID;
+ config->pidfile = _CRYWRAP_PIDFILE;
+ config->inetd = 0;
+ config->anon = 0;
+ config->verify = 0;
- argp_parse (&_crywrap_argp, argc, argv, 0, 0, config);
+ argp_parse(&_crywrap_argp, argc, argv, 0, 0, config);
- if (config->priority == NULL)
- gnutls_priority_init(&config->priority, "NORMAL", NULL);
+ if (config->priority == NULL)
+ gnutls_priority_init(&config->priority, "NORMAL", NULL);
- return config;
+ return config;
}
+
/** @} */
/** @defgroup tls Lower-level TLS routines.
@@ -514,46 +526,50 @@ _crywrap_config_parse (int argc, char **argv)
* @returns The newly created TLS session.
*/
static gnutls_session_t
-_crywrap_tls_session_create (const crywrap_config_t *config)
+_crywrap_tls_session_create(const crywrap_config_t * config)
{
- gnutls_session_t session;
- int ret;
-
- gnutls_init (&session, GNUTLS_SERVER);
-
- if (config->anon) {
- gnutls_credentials_set (session, GNUTLS_CRD_ANON, cred);
- } else {
- gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, cred);
- }
-
- ret = gnutls_priority_set(session, config->priority);
- if (ret < 0)
- {
- cry_error ("Error setting priority %s: ", gnutls_strerror(ret));
- exit (4);
- }
-
- if (config->verify==1)
- gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUEST);
- else if (config->verify==2)
- gnutls_certificate_server_set_request (session, GNUTLS_CERT_REQUIRE);
-
- return session;
+ gnutls_session_t session;
+ int ret;
+
+ gnutls_init(&session, GNUTLS_SERVER);
+
+ if (config->anon) {
+ gnutls_credentials_set(session, GNUTLS_CRD_ANON, cred);
+ } else {
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
+ cred);
+ }
+
+ ret = gnutls_priority_set(session, config->priority);
+ if (ret < 0) {
+ cry_error("Error setting priority %s: ",
+ gnutls_strerror(ret));
+ exit(4);
+ }
+
+ if (config->verify == 1)
+ gnutls_certificate_server_set_request(session,
+ GNUTLS_CERT_REQUEST);
+ else if (config->verify == 2)
+ gnutls_certificate_server_set_request(session,
+ GNUTLS_CERT_REQUIRE);
+
+ return session;
}
/** Generate initial DH and RSA params.
* Loads the pre-generated DH primes.
*/
-static void
-_crywrap_tls_init (void)
+static void _crywrap_tls_init(void)
{
- gnutls_dh_params_init (&dh_params);
- gnutls_dh_params_import_pkcs3 (dh_params, &dh_file, GNUTLS_X509_FMT_PEM);
+ gnutls_dh_params_init(&dh_params);
+ gnutls_dh_params_import_pkcs3(dh_params, &dh_file,
+ GNUTLS_X509_FMT_PEM);
- gnutls_certificate_set_dh_params (cred, dh_params);
+ gnutls_certificate_set_dh_params(cred, dh_params);
}
+
/** @} */
/** @defgroup networking Networking
@@ -569,59 +585,59 @@ _crywrap_tls_init (void)
*
* @returns The bound filedescriptor, or -1 on error.
*/
-static int
-_crywrap_bind (const struct addrinfo *ai, int listen_port)
+static int _crywrap_bind(const struct addrinfo *ai, int listen_port)
{
- int ret;
- const int one = 1;
- int listenfd;
- char sock_name[NI_MAXHOST];
-
- listenfd = socket (ai->ai_family, SOCK_STREAM, IPPROTO_IP);
- if (listenfd == -1)
- {
- cry_error ("socket: %s", strerror (errno));
- return -1;
- }
-
- memset (sock_name, 0, sizeof (sock_name));
- getnameinfo ((struct sockaddr *)ai->ai_addr, ai->ai_addrlen, sock_name,
- sizeof (sock_name), NULL, 0, NI_NUMERICHOST);
-
- switch (ai->ai_family)
- {
- case AF_INET6:
- ((struct sockaddr_in6 *)(ai->ai_addr))->sin6_port = listen_port;
- break;
- case AF_INET:
- ((struct sockaddr_in *)(ai->ai_addr))->sin_port = listen_port;
- break;
- }
-
- ret = setsockopt (listenfd, SOL_SOCKET, SO_REUSEADDR,
- &one, sizeof (one));
- if (ret != 0)
- {
- cry_error ("setsockopt: %s (%s)", strerror (errno), sock_name);
- return -1;
- }
-
- ret = bind (listenfd, ai->ai_addr, ai->ai_addrlen);
- if (ret != 0)
- {
- cry_error ("bind to %s failed: %s", sock_name, strerror (errno));
- return -1;
- }
-
- if (listen (listenfd, _CRYWRAP_MAXCONN) != 0)
- {
- cry_error ("listen on %s failed: %s", sock_name, strerror (errno));
- return -1;
- }
-
- cry_log ("Socket bound to port %d on %s.", ntohs (listen_port), sock_name);
-
- return listenfd;
+ int ret;
+ const int one = 1;
+ int listenfd;
+ char sock_name[NI_MAXHOST];
+
+ listenfd = socket(ai->ai_family, SOCK_STREAM, IPPROTO_IP);
+ if (listenfd == -1) {
+ cry_error("socket: %s", strerror(errno));
+ return -1;
+ }
+
+ memset(sock_name, 0, sizeof(sock_name));
+ getnameinfo((struct sockaddr *) ai->ai_addr, ai->ai_addrlen,
+ sock_name, sizeof(sock_name), NULL, 0, NI_NUMERICHOST);
+
+ switch (ai->ai_family) {
+ case AF_INET6:
+ ((struct sockaddr_in6 *) (ai->ai_addr))->sin6_port =
+ listen_port;
+ break;
+ case AF_INET:
+ ((struct sockaddr_in *) (ai->ai_addr))->sin_port =
+ listen_port;
+ break;
+ }
+
+ ret = setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR,
+ &one, sizeof(one));
+ if (ret != 0) {
+ cry_error("setsockopt: %s (%s)", strerror(errno),
+ sock_name);
+ return -1;
+ }
+
+ ret = bind(listenfd, ai->ai_addr, ai->ai_addrlen);
+ if (ret != 0) {
+ cry_error("bind to %s failed: %s", sock_name,
+ strerror(errno));
+ return -1;
+ }
+
+ if (listen(listenfd, _CRYWRAP_MAXCONN) != 0) {
+ cry_error("listen on %s failed: %s", sock_name,
+ strerror(errno));
+ return -1;
+ }
+
+ cry_log("Socket bound to port %d on %s.", ntohs(listen_port),
+ sock_name);
+
+ return listenfd;
}
/** Set up a listening socket.
@@ -632,39 +648,37 @@ _crywrap_bind (const struct addrinfo *ai, int listen_port)
*
* @returns The listening FD on success, -1 on error.
*/
-static int
-_crywrap_listen (const crywrap_config_t *config)
+static int _crywrap_listen(const crywrap_config_t * config)
{
- struct addrinfo *cur;
- int ret;
-
- cur = calloc (1, sizeof (struct addrinfo));
- if (cur == NULL)
- return -1;
-
- cur->ai_family = config->listen.addr->ss_family;
-
- switch (cur->ai_family)
- {
- case AF_INET6:
- cur->ai_addrlen = sizeof (struct sockaddr_in6);
- break;
- case AF_INET:
- cur->ai_addrlen = sizeof (struct sockaddr_in);
- break;
- }
-
- cur->ai_addr = malloc (cur->ai_addrlen);
- if (cur->ai_addr == NULL)
- return -1;
-
- memcpy (cur->ai_addr, config->listen.addr, cur->ai_addrlen);
-
- ret = _crywrap_bind (cur, htons (config->listen.port));
- free (cur->ai_addr);
- free (cur);
-
- return ret;
+ struct addrinfo *cur;
+ int ret;
+
+ cur = calloc(1, sizeof(struct addrinfo));
+ if (cur == NULL)
+ return -1;
+
+ cur->ai_family = config->listen.addr->ss_family;
+
+ switch (cur->ai_family) {
+ case AF_INET6:
+ cur->ai_addrlen = sizeof(struct sockaddr_in6);
+ break;
+ case AF_INET:
+ cur->ai_addrlen = sizeof(struct sockaddr_in);
+ break;
+ }
+
+ cur->ai_addr = malloc(cur->ai_addrlen);
+ if (cur->ai_addr == NULL)
+ return -1;
+
+ memcpy(cur->ai_addr, config->listen.addr, cur->ai_addrlen);
+
+ ret = _crywrap_bind(cur, htons(config->listen.port));
+ free(cur->ai_addr);
+ free(cur);
+
+ return ret;
}
/** Connect to a remote server.
@@ -677,60 +691,56 @@ _crywrap_listen (const crywrap_config_t *config)
* @returns the connected socket on success, otherwise it exits.
*/
static int
-_crywrap_remote_connect (const struct sockaddr_storage *addr, int port)
+_crywrap_remote_connect(const struct sockaddr_storage *addr, int port)
{
- struct addrinfo *cur;
- int sock;
-
- cur = calloc (1, sizeof (struct addrinfo));
- if (cur == NULL)
- return -1;
-
- cur->ai_family = addr->ss_family;
-
- switch (cur->ai_family)
- {
- case AF_INET6:
- cur->ai_addrlen = sizeof (struct sockaddr_in6);
- break;
- case AF_INET:
- cur->ai_addrlen = sizeof (struct sockaddr_in);
- break;
- }
-
- cur->ai_addr = malloc (cur->ai_addrlen);
- if (cur->ai_addr == NULL)
- return -1;
-
- memcpy (cur->ai_addr, addr, cur->ai_addrlen);
-
- switch (cur->ai_family)
- {
- case AF_INET6:
- ((struct sockaddr_in6 *)(cur->ai_addr))->sin6_port = port;
- break;
- case AF_INET:
- ((struct sockaddr_in *)(cur->ai_addr))->sin_port = port;
- break;
- }
-
- sock = socket (cur->ai_family, SOCK_STREAM, IPPROTO_IP);
- if (sock < 0)
- {
- cry_error ("socket(): %s", strerror (errno));
- exit (1);
- }
-
- if (connect (sock, cur->ai_addr, cur->ai_addrlen) < 0)
- {
- cry_error ("connect(): %s", strerror (errno));
- exit (1);
- }
-
- free (cur->ai_addr);
- free (cur);
-
- return sock;
+ struct addrinfo *cur;
+ int sock;
+
+ cur = calloc(1, sizeof(struct addrinfo));
+ if (cur == NULL)
+ return -1;
+
+ cur->ai_family = addr->ss_family;
+
+ switch (cur->ai_family) {
+ case AF_INET6:
+ cur->ai_addrlen = sizeof(struct sockaddr_in6);
+ break;
+ case AF_INET:
+ cur->ai_addrlen = sizeof(struct sockaddr_in);
+ break;
+ }
+
+ cur->ai_addr = malloc(cur->ai_addrlen);
+ if (cur->ai_addr == NULL)
+ return -1;
+
+ memcpy(cur->ai_addr, addr, cur->ai_addrlen);
+
+ switch (cur->ai_family) {
+ case AF_INET6:
+ ((struct sockaddr_in6 *) (cur->ai_addr))->sin6_port = port;
+ break;
+ case AF_INET:
+ ((struct sockaddr_in *) (cur->ai_addr))->sin_port = port;
+ break;
+ }
+
+ sock = socket(cur->ai_family, SOCK_STREAM, IPPROTO_IP);
+ if (sock < 0) {
+ cry_error("socket(): %s", strerror(errno));
+ exit(1);
+ }
+
+ if (connect(sock, cur->ai_addr, cur->ai_addrlen) < 0) {
+ cry_error("connect(): %s", strerror(errno));
+ exit(1);
+ }
+
+ free(cur->ai_addr);
+ free(cur);
+
+ return sock;
}
/** @} */
@@ -743,40 +753,35 @@ _crywrap_remote_connect (const struct sockaddr_storage *addr, int port)
* Drop privileges, if running as root.
* Upon failure, it will make CryWrap exit.
*/
-static void
-_crywrap_privs_drop (const crywrap_config_t *config)
+static void _crywrap_privs_drop(const crywrap_config_t * config)
{
- struct passwd *pwd;
-
- if (getuid () != 0)
- {
- cry_log ("%s", "Not running as root, not dropping privileges.");
- return;
- }
-
- if ((pwd = getpwuid (config->uid)) == NULL)
- {
- cry_error ("getpwuid(): %s", strerror (errno));
- exit (1);
- }
-
- if (initgroups (pwd->pw_name, pwd->pw_gid) == -1)
- {
- cry_error ("initgroups(): %s", strerror (errno));
- exit (1);
- }
-
- if (setgid (pwd->pw_gid) == -1)
- {
- cry_error ("setgid(): %s", strerror (errno));
- exit (1);
- }
-
- if (setuid (config->uid))
- {
- cry_error ("setuid(): %s", strerror (errno));
- exit (1);
- }
+ struct passwd *pwd;
+
+ if (getuid() != 0) {
+ cry_log("%s",
+ "Not running as root, not dropping privileges.");
+ return;
+ }
+
+ if ((pwd = getpwuid(config->uid)) == NULL) {
+ cry_error("getpwuid(): %s", strerror(errno));
+ exit(1);
+ }
+
+ if (initgroups(pwd->pw_name, pwd->pw_gid) == -1) {
+ cry_error("initgroups(): %s", strerror(errno));
+ exit(1);
+ }
+
+ if (setgid(pwd->pw_gid) == -1) {
+ cry_error("setgid(): %s", strerror(errno));
+ exit(1);
+ }
+
+ if (setuid(config->uid)) {
+ cry_error("setuid(): %s", strerror(errno));
+ exit(1);
+ }
}
/** Set up the PID file.
@@ -785,34 +790,32 @@ _crywrap_privs_drop (const crywrap_config_t *config)
*
* @note Exits upon error.
*/
-static void
-_crywrap_setup_pidfile (const crywrap_config_t *config)
+static void _crywrap_setup_pidfile(const crywrap_config_t * config)
{
- char mypid[128];
- int pidfilefd;
-
- if (!config->pidfile || !*(config->pidfile))
- return;
-
- if (!access (config->pidfile, F_OK))
- {
- cry_error ("Pidfile (%s) already exists. Exiting.", config->pidfile);
- exit (1);
- }
- if ((pidfilefd = open (config->pidfile,
- O_WRONLY | O_CREAT | O_TRUNC, 0644)) == -1)
- {
- cry_error ("Cannot create pidfile (%s): %s.\n", config->pidfile,
- strerror (errno));
- exit (1);
- }
- fchown (pidfilefd, config->uid, (gid_t)-1);
-
- main_pid = getpid ();
- snprintf (mypid, sizeof (mypid), "%d\n", main_pid);
- write (pidfilefd, mypid, strlen (mypid));
- close (pidfilefd);
- pidfile = config->pidfile;
+ char mypid[128];
+ int pidfilefd;
+
+ if (!config->pidfile || !*(config->pidfile))
+ return;
+
+ if (!access(config->pidfile, F_OK)) {
+ cry_error("Pidfile (%s) already exists. Exiting.",
+ config->pidfile);
+ exit(1);
+ }
+ if ((pidfilefd = open(config->pidfile,
+ O_WRONLY | O_CREAT | O_TRUNC, 0644)) == -1) {
+ cry_error("Cannot create pidfile (%s): %s.\n",
+ config->pidfile, strerror(errno));
+ exit(1);
+ }
+ fchown(pidfilefd, config->uid, (gid_t) - 1);
+
+ main_pid = getpid();
+ snprintf(mypid, sizeof(mypid), "%d\n", main_pid);
+ write(pidfilefd, mypid, strlen(mypid));
+ close(pidfilefd);
+ pidfile = config->pidfile;
}
@@ -827,273 +830,258 @@ _crywrap_setup_pidfile (const crywrap_config_t *config)
* @note Exits on error.
*/
static int
-_crywrap_do_one (const crywrap_config_t *config, int insock, int outsock)
+_crywrap_do_one(const crywrap_config_t * config, int insock, int outsock)
{
- int sock, ret, tls_pending;
- gnutls_session_t session;
- char buffer[_CRYWRAP_MAXBUF + 2];
- fd_set fdset;
- unsigned int status = 0;
- struct sockaddr_storage faddr;
- socklen_t socklen = sizeof (struct sockaddr_storage);
- char peer_name[NI_MAXHOST];
-
- /* Log the connection */
- if (getpeername (insock, (struct sockaddr *)&faddr, &socklen) != 0)
- cry_error ("getpeername(): %s", strerror (errno));
- else
- {
- getnameinfo ((struct sockaddr *)&faddr,
- sizeof (struct sockaddr_storage), peer_name,
- sizeof (peer_name), NULL, 0, NI_NUMERICHOST);
- cry_log ("Accepted connection from %s on %d to %s/%d",
- peer_name, insock, config->dest.host,
- config->dest.port);
- }
-
- /* Do the handshake with our peer */
- session = _crywrap_tls_session_create (config);
- gnutls_transport_set_ptr2 (session,
- (gnutls_transport_ptr_t)insock,
- (gnutls_transport_ptr_t)outsock);
-
- do
- {
- ret = gnutls_handshake(session);
- }
- while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
-
- if (ret < 0)
- {
- cry_error ("Handshake failed: %s", gnutls_strerror (ret));
- gnutls_alert_send_appropriate(session, ret);
- goto error;
- }
-
- /* Verify the client's certificate, if any. */
- if (config->verify)
- {
- ret = gnutls_certificate_verify_peers2 (session, &status);
- if (ret < 0)
- cry_log ("Error getting certificate from client: %s",
- gnutls_strerror (ret));
-
- if (ret == 0 && status != 0)
- {
- if (status & GNUTLS_CERT_INVALID)
- cry_log ("%s", "Client certificate not trusted or invalid");
- }
-
- if (config->verify > 0 && status != 0)
- {
- ret = -1;
- gnutls_alert_send( session, GNUTLS_AL_FATAL, GNUTLS_A_INSUFFICIENT_SECURITY);
- goto error;
- }
- }
-
- /* Connect to the remote host */
- sock = _crywrap_remote_connect (config->dest.addr,
- htons (config->dest.port));
-
- for (;;)
- {
- FD_ZERO (&fdset);
- FD_SET (insock, &fdset);
- FD_SET (sock, &fdset);
-
- memset (buffer, 0, _CRYWRAP_MAXBUF + 1);
-
- tls_pending = 0;
-
- if (gnutls_record_check_pending(session) > 0)
- tls_pending = 1;
- else
- {
- select (sock + 1, &fdset, NULL, NULL, NULL);
- if (FD_ISSET (insock, &fdset))
- tls_pending = 1;
- }
- /* TLS client */
- if (tls_pending != 0)
- {
- ret = gnutls_record_recv (session, buffer, _CRYWRAP_MAXBUF);
- if (ret == 0)
- {
- cry_log ("%s", "Peer has closed the GNUTLS connection");
- break;
- }
- else if (ret < 0)
- {
- cry_log ("Received corrupted data: %s.",
- gnutls_strerror (ret));
- break;
- }
- else
- send (sock, buffer, ret, 0);
+ int sock, ret, tls_pending;
+ gnutls_session_t session;
+ char buffer[_CRYWRAP_MAXBUF + 2];
+ fd_set fdset;
+ unsigned int status = 0;
+ struct sockaddr_storage faddr;
+ socklen_t socklen = sizeof(struct sockaddr_storage);
+ char peer_name[NI_MAXHOST];
+
+ /* Log the connection */
+ if (getpeername(insock, (struct sockaddr *) &faddr, &socklen) != 0)
+ cry_error("getpeername(): %s", strerror(errno));
+ else {
+ getnameinfo((struct sockaddr *) &faddr,
+ sizeof(struct sockaddr_storage), peer_name,
+ sizeof(peer_name), NULL, 0, NI_NUMERICHOST);
+ cry_log("Accepted connection from %s on %d to %s/%d",
+ peer_name, insock, config->dest.host,
+ config->dest.port);
}
- /* Remote server */
- if (FD_ISSET (sock, &fdset))
- {
- ret = recv (sock, buffer, _CRYWRAP_MAXBUF, 0);
- if (ret == 0)
- {
- cry_log ("%s", "Server has closed the connection");
- break;
- }
- else if (ret < 0)
- {
- cry_log ("Received corrupted data: %s.", strerror (errno));
- break;
- }
- else
- {
- int r, o = 0;
-
- do
- {
- r = gnutls_record_send (session, &buffer[o], ret - o);
- o += r;
- } while (r > 0 && ret > o);
+ /* Do the handshake with our peer */
+ session = _crywrap_tls_session_create(config);
+ gnutls_transport_set_ptr2(session,
+ (gnutls_transport_ptr_t) insock,
+ (gnutls_transport_ptr_t) outsock);
- if (r < 0)
- cry_log ("Received corrupt data: %s", gnutls_strerror (r));
- }
+ do {
+ ret = gnutls_handshake(session);
}
- }
+ while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
-error:
- gnutls_bye (session, GNUTLS_SHUT_WR);
- gnutls_deinit (session);
- close (insock);
- close (outsock);
+ if (ret < 0) {
+ cry_error("Handshake failed: %s", gnutls_strerror(ret));
+ gnutls_alert_send_appropriate(session, ret);
+ goto error;
+ }
- return (ret == 0) ? 0 : 1;
+ /* Verify the client's certificate, if any. */
+ if (config->verify) {
+ ret = gnutls_certificate_verify_peers2(session, &status);
+ if (ret < 0)
+ cry_log
+ ("Error getting certificate from client: %s",
+ gnutls_strerror(ret));
+
+ if (ret == 0 && status != 0) {
+ if (status & GNUTLS_CERT_INVALID)
+ cry_log("%s",
+ "Client certificate not trusted or invalid");
+ }
+
+ if (config->verify > 0 && status != 0) {
+ ret = -1;
+ gnutls_alert_send(session, GNUTLS_AL_FATAL,
+ GNUTLS_A_INSUFFICIENT_SECURITY);
+ goto error;
+ }
+ }
+
+ /* Connect to the remote host */
+ sock = _crywrap_remote_connect(config->dest.addr,
+ htons(config->dest.port));
+
+ for (;;) {
+ FD_ZERO(&fdset);
+ FD_SET(insock, &fdset);
+ FD_SET(sock, &fdset);
+
+ memset(buffer, 0, _CRYWRAP_MAXBUF + 1);
+
+ tls_pending = 0;
+
+ if (gnutls_record_check_pending(session) > 0)
+ tls_pending = 1;
+ else {
+ select(sock + 1, &fdset, NULL, NULL, NULL);
+ if (FD_ISSET(insock, &fdset))
+ tls_pending = 1;
+ }
+ /* TLS client */
+ if (tls_pending != 0) {
+ ret =
+ gnutls_record_recv(session, buffer,
+ _CRYWRAP_MAXBUF);
+ if (ret == 0) {
+ cry_log("%s",
+ "Peer has closed the GNUTLS connection");
+ break;
+ } else if (ret < 0) {
+ cry_log("Received corrupted data: %s.",
+ gnutls_strerror(ret));
+ break;
+ } else
+ send(sock, buffer, ret, 0);
+ }
+
+ /* Remote server */
+ if (FD_ISSET(sock, &fdset)) {
+ ret = recv(sock, buffer, _CRYWRAP_MAXBUF, 0);
+ if (ret == 0) {
+ cry_log("%s",
+ "Server has closed the connection");
+ break;
+ } else if (ret < 0) {
+ cry_log("Received corrupted data: %s.",
+ strerror(errno));
+ break;
+ } else {
+ int r, o = 0;
+
+ do {
+ r = gnutls_record_send(session,
+ &buffer[o],
+ ret - o);
+ o += r;
+ } while (r > 0 && ret > o);
+
+ if (r < 0)
+ cry_log
+ ("Received corrupt data: %s",
+ gnutls_strerror(r));
+ }
+ }
+ }
+
+ error:
+ gnutls_bye(session, GNUTLS_SHUT_WR);
+ gnutls_deinit(session);
+ close(insock);
+ close(outsock);
+
+ return (ret == 0) ? 0 : 1;
}
/** CryWrap entry point.
* This is the main entry point - controls the whole program and so
* on...
*/
-int
-main (int argc, char **argv, char **envp)
+int main(int argc, char **argv, char **envp)
{
- crywrap_config_t *config;
- int server_socket;
-
- openlog (__CRYWRAP__, LOG_PID, LOG_DAEMON);
-
- gnutls_global_set_audit_log_function (tls_audit_log_func);
-
- if (gnutls_global_init () < 0)
- {
- cry_error ("%s", "Global TLS state initialisation failed.");
- exit (1);
- }
- if (gnutls_certificate_allocate_credentials (&cred) < 0)
- {
- cry_error ("%s", "Couldn't allocate credentials.");
- exit (1);
- }
-
- stringprep_locale_charset ();
-
- config = _crywrap_config_parse (argc, argv);
-
- _crywrap_tls_init ();
-
- if (config->inetd)
- {
- _crywrap_privs_drop (config);
- exit (_crywrap_do_one (config, 0, 1));
- }
-
- if (!config->debug)
- if (daemon (0, 0))
- {
- cry_error ("daemon: %s", strerror (errno));
- exit (1);
- }
-
- cry_log ("%s", "Crywrap starting...");
-
- server_socket = _crywrap_listen (config);
- if (server_socket < 0)
- exit (1);
-
- if (!config->debug) _crywrap_setup_pidfile (config);
- _crywrap_privs_drop (config);
-
- signal (SIGTERM, _crywrap_sighandler);
- signal (SIGQUIT, _crywrap_sighandler);
- signal (SIGSEGV, _crywrap_sighandler);
- signal (SIGPIPE, SIG_IGN);
- signal (SIGHUP, SIG_IGN);
- signal (SIGCHLD, _crywrap_sigchld_handler);
-
- cry_log ("%s", "Accepting connections");
-
-
- for (;;)
- {
- int csock;
- int child;
-
- csock = accept (server_socket, NULL, NULL);
- if (csock < 0)
- continue;
-
- child = fork ();
- switch (child)
- {
- case 0:
- exit (_crywrap_do_one (config, csock, csock));
- break;
- case -1:
- cry_error ("%s", "Forking error.");
- exit (1);
- break;
+ crywrap_config_t *config;
+ int server_socket;
+
+ openlog(__CRYWRAP__, LOG_PID, LOG_DAEMON);
+
+ gnutls_global_set_audit_log_function(tls_audit_log_func);
+
+ if (gnutls_global_init() < 0) {
+ cry_error("%s", "Global TLS state initialisation failed.");
+ exit(1);
+ }
+ if (gnutls_certificate_allocate_credentials(&cred) < 0) {
+ cry_error("%s", "Couldn't allocate credentials.");
+ exit(1);
}
- close(csock);
- }
- return 0;
+ stringprep_locale_charset();
+
+ config = _crywrap_config_parse(argc, argv);
+
+ _crywrap_tls_init();
+
+ if (config->inetd) {
+ _crywrap_privs_drop(config);
+ exit(_crywrap_do_one(config, 0, 1));
+ }
+
+ if (!config->debug)
+ if (daemon(0, 0)) {
+ cry_error("daemon: %s", strerror(errno));
+ exit(1);
+ }
+
+ cry_log("%s", "Crywrap starting...");
+
+ server_socket = _crywrap_listen(config);
+ if (server_socket < 0)
+ exit(1);
+
+ if (!config->debug)
+ _crywrap_setup_pidfile(config);
+ _crywrap_privs_drop(config);
+
+ signal(SIGTERM, _crywrap_sighandler);
+ signal(SIGQUIT, _crywrap_sighandler);
+ signal(SIGSEGV, _crywrap_sighandler);
+ signal(SIGPIPE, SIG_IGN);
+ signal(SIGHUP, SIG_IGN);
+ signal(SIGCHLD, _crywrap_sigchld_handler);
+
+ cry_log("%s", "Accepting connections");
+
+
+ for (;;) {
+ int csock;
+ int child;
+
+ csock = accept(server_socket, NULL, NULL);
+ if (csock < 0)
+ continue;
+
+ child = fork();
+ switch (child) {
+ case 0:
+ exit(_crywrap_do_one(config, csock, csock));
+ break;
+ case -1:
+ cry_error("%s", "Forking error.");
+ exit(1);
+ break;
+ }
+ close(csock);
+ }
+
+ return 0;
}
-static int system_log(const char* fmt, ...)
+static int system_log(const char *fmt, ...)
{
- va_list args;
+ va_list args;
- va_start (args, fmt);
- vsyslog(LOG_NOTICE, fmt, args);
- va_end (args);
+ va_start(args, fmt);
+ vsyslog(LOG_NOTICE, fmt, args);
+ va_end(args);
- return 0;
+ return 0;
}
-static int system_log_error(const char* fmt, ...)
+static int system_log_error(const char *fmt, ...)
{
- va_list args;
+ va_list args;
- va_start (args, fmt);
- vsyslog(LOG_ERR, fmt, args);
- va_end (args);
+ va_start(args, fmt);
+ vsyslog(LOG_ERR, fmt, args);
+ va_end(args);
- return 0;
+ return 0;
}
-static int debug_log(const char* fmt, ...)
+static int debug_log(const char *fmt, ...)
{
- va_list args;
+ va_list args;
- va_start (args, fmt);
- vprintf(fmt, args);
- puts("");
- va_end (args);
+ va_start(args, fmt);
+ vprintf(fmt, args);
+ puts("");
+ va_end(args);
- return 0;
+ return 0;
}
/** @} */
-
diff --git a/src/crywrap/crywrap.h b/src/crywrap/crywrap.h
index e246e27a44..a41990f4a0 100644
--- a/src/crywrap/crywrap.h
+++ b/src/crywrap/crywrap.h
@@ -57,35 +57,37 @@
* Most of the CryWrap configuration - those options that are settable
* via the command-line are stored in a variable of this type.
*/
-typedef struct
-{
+typedef struct {
/** Properties of the listening socket.
*/
- struct
- {
- in_port_t port;
- struct sockaddr_storage *addr;
- } listen;
+ struct {
+ in_port_t port;
+ struct sockaddr_storage *addr;
+ } listen;
/** Properties of the destination socket.
*/
- struct
- {
- in_port_t port;
- char *host;
- struct sockaddr_storage *addr;
- } dest;
+ struct {
+ in_port_t port;
+ char *host;
+ struct sockaddr_storage *addr;
+ } dest;
- gnutls_priority_t priority; /**< GnuTLS priority string. */
- const char *pidfile; /**< File to store our PID in. */
- uid_t uid; /**< User ID to run as. */
- int inetd; /**< InetD-mode toggle. */
- int anon; /**< Anon-DH toggle. */
- int verify; /**< Client certificate verify level. */
- int debug;
+ gnutls_priority_t priority;
+ /**< GnuTLS priority string. */
+ const char *pidfile;
+ /**< File to store our PID in. */
+ uid_t uid;
+ /**< User ID to run as. */
+ int inetd;
+ /**< InetD-mode toggle. */
+ int anon;
+ /**< Anon-DH toggle. */
+ int verify;
+ /**< Client certificate verify level. */
+ int debug;
} crywrap_config_t;
-/** @} *//* End of the Options group */
-
-#endif /* !_CRYWRAP_H */
+ /** @} *//* End of the Options group */
+#endif /* !_CRYWRAP_H */
diff --git a/src/crywrap/primes.h b/src/crywrap/primes.h
index 50c331d39d..2ca1e1ad86 100644
--- a/src/crywrap/primes.h
+++ b/src/crywrap/primes.h
@@ -33,10 +33,9 @@
/** Initial DH primes, 1024 bits.
*/
static char _crywrap_prime_dh_1024[] = "-----BEGIN DH PARAMETERS-----\n"
-"MIGHAoGBAO6vCrmts43WnDP4CvqPxehgcmGHdf88C56iMUycJWV21nTfdJbqgdM4\n"
-"O0gT1pLG4ODV2OJQuYvkjklcHWCJ2tFdx9e0YVTWts6O9K1psV1JglWbKXvPGIXF\n"
-"KfVmZg5X7GjtvDwFcmzAL9TL9Jduqpr9UTj+g3ZDW5/GHS/A6wbjAgEC\n"
-"-----END DH PARAMETERS-----\n";
+ "MIGHAoGBAO6vCrmts43WnDP4CvqPxehgcmGHdf88C56iMUycJWV21nTfdJbqgdM4\n"
+ "O0gT1pLG4ODV2OJQuYvkjklcHWCJ2tFdx9e0YVTWts6O9K1psV1JglWbKXvPGIXF\n"
+ "KfVmZg5X7GjtvDwFcmzAL9TL9Jduqpr9UTj+g3ZDW5/GHS/A6wbjAgEC\n"
+ "-----END DH PARAMETERS-----\n";
#endif
-