#if defined(NO_BUFFER) || defined(NO_IP) || defined(NO_OPENSSL)
-#error "Badness, NO_BUFFER, NO_IP or NO_OPENSSL is defined, turn them *off*"
+# error "Badness, NO_BUFFER, NO_IP or NO_OPENSSL is defined, turn them *off*"
#endif
/* Include our bits'n'pieces */
#include "tunala.h"
-
/********************************************/
/* Our local types that specify our "world" */
/********************************************/
-/* These represent running "tunnels". Eg. if you wanted to do SSL in a
- * "message-passing" scanario, the "int" file-descriptors might be replaced by
- * thread or process IDs, and the "select" code might be replaced by message
- * handling code. Whatever. */
+/*
+ * These represent running "tunnels". Eg. if you wanted to do SSL in a
+ * "message-passing" scanario, the "int" file-descriptors might be replaced
+ * by thread or process IDs, and the "select" code might be replaced by
+ * message handling code. Whatever.
+ */
typedef struct _tunala_item_t {
- /* The underlying SSL state machine. This is a data-only processing unit
- * and we communicate with it by talking to its four "buffers". */
- state_machine_t sm;
- /* The file-descriptors for the "dirty" (encrypted) side of the SSL
- * setup. In actuality, this is typically a socket and both values are
- * identical. */
- int dirty_read, dirty_send;
- /* The file-descriptors for the "clean" (unencrypted) side of the SSL
- * setup. These could be stdin/stdout, a socket (both values the same),
- * or whatever you like. */
- int clean_read, clean_send;
+ /*
+ * The underlying SSL state machine. This is a data-only processing unit
+ * and we communicate with it by talking to its four "buffers".
+ */
+ state_machine_t sm;
+ /*
+ * The file-descriptors for the "dirty" (encrypted) side of the SSL
+ * setup. In actuality, this is typically a socket and both values are
+ * identical.
+ */
+ int dirty_read, dirty_send;
+ /*
+ * The file-descriptors for the "clean" (unencrypted) side of the SSL
+ * setup. These could be stdin/stdout, a socket (both values the same),
+ * or whatever you like.
+ */
+ int clean_read, clean_send;
} tunala_item_t;
-/* This structure is used as the data for running the main loop. Namely, in a
+/*
+ * This structure is used as the data for running the main loop. Namely, in a
* network format such as this, it is stuff for select() - but as pointed out,
* when moving the real-world to somewhere else, this might be replaced by
* something entirely different. It's basically the stuff that controls when
- * it's time to do some "work". */
+ * it's time to do some "work".
+ */
typedef struct _select_sets_t {
- int max; /* As required as the first argument to select() */
- fd_set reads, sends, excepts; /* As passed to select() */
+ int max; /* As required as the first argument to
+ * select() */
+ fd_set reads, sends, excepts; /* As passed to select() */
} select_sets_t;
typedef struct _tunala_selector_t {
- select_sets_t last_selected; /* Results of the last select() */
- select_sets_t next_select; /* What we'll next select on */
+ select_sets_t last_selected; /* Results of the last select() */
+ select_sets_t next_select; /* What we'll next select on */
} tunala_selector_t;
-/* This structure is *everything*. We do it to avoid the use of globals so that,
- * for example, it would be easier to shift things around between async-IO,
- * thread-based, or multi-fork()ed (or combinations thereof). */
+/*
+ * This structure is *everything*. We do it to avoid the use of globals so
+ * that, for example, it would be easier to shift things around between
+ * async-IO, thread-based, or multi-fork()ed (or combinations thereof).
+ */
typedef struct _tunala_world_t {
- /* The file-descriptor we "listen" on for new connections */
- int listen_fd;
- /* The array of tunnels */
- tunala_item_t *tunnels;
- /* the number of tunnels in use and allocated, respectively */
- unsigned int tunnels_used, tunnels_size;
- /* Our outside "loop" context stuff */
- tunala_selector_t selector;
- /* Our SSL_CTX, which is configured as the SSL client or server and has
- * the various cert-settings and callbacks configured. */
- SSL_CTX *ssl_ctx;
- /* Simple flag with complex logic :-) Indicates whether we're an SSL
- * server or an SSL client. */
- int server_mode;
+ /* The file-descriptor we "listen" on for new connections */
+ int listen_fd;
+ /* The array of tunnels */
+ tunala_item_t *tunnels;
+ /* the number of tunnels in use and allocated, respectively */
+ unsigned int tunnels_used, tunnels_size;
+ /* Our outside "loop" context stuff */
+ tunala_selector_t selector;
+ /*
+ * Our SSL_CTX, which is configured as the SSL client or server and has
+ * the various cert-settings and callbacks configured.
+ */
+ SSL_CTX *ssl_ctx;
+ /*
+ * Simple flag with complex logic :-) Indicates whether we're an SSL
+ * server or an SSL client.
+ */
+ int server_mode;
} tunala_world_t;
/*****************************/
/*****************************/
static SSL_CTX *initialise_ssl_ctx(int server_mode, const char *engine_id,
- const char *CAfile, const char *cert, const char *key,
- const char *dcert, const char *dkey, const char *cipher_list,
- const char *dh_file, const char *dh_special, int tmp_rsa,
- int ctx_options, int out_state, int out_verify, int verify_mode,
- unsigned int verify_depth);
-static void selector_init(tunala_selector_t *selector);
-static void selector_add_listener(tunala_selector_t *selector, int fd);
-static void selector_add_tunala(tunala_selector_t *selector, tunala_item_t *t);
-static int selector_select(tunala_selector_t *selector);
-/* This returns -1 for error, 0 for no new connections, or 1 for success, in
- * which case *newfd is populated. */
-static int selector_get_listener(tunala_selector_t *selector, int fd, int *newfd);
-static int tunala_world_new_item(tunala_world_t *world, int fd,
- const char *ip, unsigned short port, int flipped);
-static void tunala_world_del_item(tunala_world_t *world, unsigned int idx);
-static int tunala_item_io(tunala_selector_t *selector, tunala_item_t *item);
+ const char *CAfile, const char *cert,
+ const char *key, const char *dcert,
+ const char *dkey, const char *cipher_list,
+ const char *dh_file,
+ const char *dh_special, int tmp_rsa,
+ int ctx_options, int out_state,
+ int out_verify, int verify_mode,
+ unsigned int verify_depth);
+static void selector_init(tunala_selector_t * selector);
+static void selector_add_listener(tunala_selector_t * selector, int fd);
+static void selector_add_tunala(tunala_selector_t * selector,
+ tunala_item_t * t);
+static int selector_select(tunala_selector_t * selector);
+/*
+ * This returns -1 for error, 0 for no new connections, or 1 for success, in
+ * which case *newfd is populated.
+ */
+static int selector_get_listener(tunala_selector_t * selector, int fd,
+ int *newfd);
+static int tunala_world_new_item(tunala_world_t * world, int fd,
+ const char *ip, unsigned short port,
+ int flipped);
+static void tunala_world_del_item(tunala_world_t * world, unsigned int idx);
+static int tunala_item_io(tunala_selector_t * selector, tunala_item_t * item);
/*********************************************/
/* MAIN FUNCTION (and its utility functions) */
static int def_out_conns = 0;
static const char *helpstring =
-"\n'Tunala' (A tunneler with a New Zealand accent)\n"
-"Usage: tunala [options], where options are from;\n"
-" -listen [host:]<port> (default = 127.0.0.1:8080)\n"
-" -proxy <host>:<port> (default = 127.0.0.1:443)\n"
-" -maxtunnels <num> (default = 50)\n"
-" -cacert <path|NULL> (default = NULL)\n"
-" -cert <path|NULL> (default = NULL)\n"
-" -key <path|NULL> (default = whatever '-cert' is)\n"
-" -dcert <path|NULL> (usually for DSA, default = NULL)\n"
-" -dkey <path|NULL> (usually for DSA, default = whatever '-dcert' is)\n"
-" -engine <id|NULL> (default = NULL)\n"
-" -server <0|1> (default = 0, ie. an SSL client)\n"
-" -flipped <0|1> (makes SSL servers be network clients, and vice versa)\n"
-" -cipher <list> (specifies cipher list to use)\n"
-" -dh_file <path> (a PEM file containing DH parameters to use)\n"
-" -dh_special <NULL|generate|standard> (see below: def=NULL)\n"
-" -no_tmp_rsa (don't generate temporary RSA keys)\n"
-" -no_ssl2 (disable SSLv2)\n"
-" -no_ssl3 (disable SSLv3)\n"
-" -no_tls1 (disable TLSv1)\n"
-" -v_peer (verify the peer certificate)\n"
-" -v_strict (do not continue if peer doesn't authenticate)\n"
-" -v_once (no verification in renegotiates)\n"
-" -v_depth <num> (limit certificate chain depth, default = 10)\n"
-" -out_conns (prints client connections and disconnections)\n"
-" -out_state (prints SSL handshake states)\n"
-" -out_verify <0|1|2|3> (prints certificate verification states: def=1)\n"
-" -out_totals (prints out byte-totals when a tunnel closes)\n"
-" -<h|help|?> (displays this help screen)\n"
-"Notes:\n"
-"(1) It is recommended to specify a cert+key when operating as an SSL server.\n"
-" If you only specify '-cert', the same file must contain a matching\n"
-" private key.\n"
-"(2) Either dh_file or dh_special can be used to specify where DH parameters\n"
-" will be obtained from (or '-dh_special NULL' for the default choice) but\n"
-" you cannot specify both. For dh_special, 'generate' will create new DH\n"
-" parameters on startup, and 'standard' will use embedded parameters\n"
-" instead.\n"
-"(3) Normally an ssl client connects to an ssl server - so that an 'ssl client\n"
-" tunala' listens for 'clean' client connections and proxies ssl, and an\n"
-" 'ssl server tunala' listens for ssl connections and proxies 'clean'. With\n"
-" '-flipped 1', this behaviour is reversed so that an 'ssl server tunala'\n"
-" listens for clean client connections and proxies ssl (but participating\n"
-" as an ssl *server* in the SSL/TLS protocol), and an 'ssl client tunala'\n"
-" listens for ssl connections (participating as an ssl *client* in the\n"
-" SSL/TLS protocol) and proxies 'clean' to the end destination. This can\n"
-" be useful for allowing network access to 'servers' where only the server\n"
-" needs to authenticate the client (ie. the other way is not required).\n"
-" Even with client and server authentication, this 'technique' mitigates\n"
-" some DoS (denial-of-service) potential as it will be the network client\n"
-" having to perform the first private key operation rather than the other\n"
-" way round.\n"
-"(4) The 'technique' used by setting '-flipped 1' is probably compatible with\n"
-" absolutely nothing except another complimentary instance of 'tunala'\n"
-" running with '-flipped 1'. :-)\n";
+ "\n'Tunala' (A tunneler with a New Zealand accent)\n"
+ "Usage: tunala [options], where options are from;\n"
+ " -listen [host:]<port> (default = 127.0.0.1:8080)\n"
+ " -proxy <host>:<port> (default = 127.0.0.1:443)\n"
+ " -maxtunnels <num> (default = 50)\n"
+ " -cacert <path|NULL> (default = NULL)\n"
+ " -cert <path|NULL> (default = NULL)\n"
+ " -key <path|NULL> (default = whatever '-cert' is)\n"
+ " -dcert <path|NULL> (usually for DSA, default = NULL)\n"
+ " -dkey <path|NULL> (usually for DSA, default = whatever '-dcert' is)\n"
+ " -engine <id|NULL> (default = NULL)\n"
+ " -server <0|1> (default = 0, ie. an SSL client)\n"
+ " -flipped <0|1> (makes SSL servers be network clients, and vice versa)\n"
+ " -cipher <list> (specifies cipher list to use)\n"
+ " -dh_file <path> (a PEM file containing DH parameters to use)\n"
+ " -dh_special <NULL|generate|standard> (see below: def=NULL)\n"
+ " -no_tmp_rsa (don't generate temporary RSA keys)\n"
+ " -no_ssl2 (disable SSLv2)\n"
+ " -no_ssl3 (disable SSLv3)\n"
+ " -no_tls1 (disable TLSv1)\n"
+ " -v_peer (verify the peer certificate)\n"
+ " -v_strict (do not continue if peer doesn't authenticate)\n"
+ " -v_once (no verification in renegotiates)\n"
+ " -v_depth <num> (limit certificate chain depth, default = 10)\n"
+ " -out_conns (prints client connections and disconnections)\n"
+ " -out_state (prints SSL handshake states)\n"
+ " -out_verify <0|1|2|3> (prints certificate verification states: def=1)\n"
+ " -out_totals (prints out byte-totals when a tunnel closes)\n"
+ " -<h|help|?> (displays this help screen)\n"
+ "Notes:\n"
+ "(1) It is recommended to specify a cert+key when operating as an SSL server.\n"
+ " If you only specify '-cert', the same file must contain a matching\n"
+ " private key.\n"
+ "(2) Either dh_file or dh_special can be used to specify where DH parameters\n"
+ " will be obtained from (or '-dh_special NULL' for the default choice) but\n"
+ " you cannot specify both. For dh_special, 'generate' will create new DH\n"
+ " parameters on startup, and 'standard' will use embedded parameters\n"
+ " instead.\n"
+ "(3) Normally an ssl client connects to an ssl server - so that an 'ssl client\n"
+ " tunala' listens for 'clean' client connections and proxies ssl, and an\n"
+ " 'ssl server tunala' listens for ssl connections and proxies 'clean'. With\n"
+ " '-flipped 1', this behaviour is reversed so that an 'ssl server tunala'\n"
+ " listens for clean client connections and proxies ssl (but participating\n"
+ " as an ssl *server* in the SSL/TLS protocol), and an 'ssl client tunala'\n"
+ " listens for ssl connections (participating as an ssl *client* in the\n"
+ " SSL/TLS protocol) and proxies 'clean' to the end destination. This can\n"
+ " be useful for allowing network access to 'servers' where only the server\n"
+ " needs to authenticate the client (ie. the other way is not required).\n"
+ " Even with client and server authentication, this 'technique' mitigates\n"
+ " some DoS (denial-of-service) potential as it will be the network client\n"
+ " having to perform the first private key operation rather than the other\n"
+ " way round.\n"
+ "(4) The 'technique' used by setting '-flipped 1' is probably compatible with\n"
+ " absolutely nothing except another complimentary instance of 'tunala'\n"
+ " running with '-flipped 1'. :-)\n";
+
+/*
+ * Default DH parameters for use with "-dh_special standard" ... stolen
+ * striaght from s_server.
+ */
+static unsigned char dh512_p[] = {
+ 0xDA, 0x58, 0x3C, 0x16, 0xD9, 0x85, 0x22, 0x89, 0xD0, 0xE4, 0xAF, 0x75,
+ 0x6F, 0x4C, 0xCA, 0x92, 0xDD, 0x4B, 0xE5, 0x33, 0xB8, 0x04, 0xFB, 0x0F,
+ 0xED, 0x94, 0xEF, 0x9C, 0x8A, 0x44, 0x03, 0xED, 0x57, 0x46, 0x50, 0xD3,
+ 0x69, 0x99, 0xDB, 0x29, 0xD7, 0x76, 0x27, 0x6B, 0xA2, 0xD3, 0xD4, 0x12,
+ 0xE2, 0x18, 0xF4, 0xDD, 0x1E, 0x08, 0x4C, 0xF6, 0xD8, 0x00, 0x3E, 0x7C,
+ 0x47, 0x74, 0xE8, 0x33,
+};
-/* Default DH parameters for use with "-dh_special standard" ... stolen striaght
- * from s_server. */
-static unsigned char dh512_p[]={
- 0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
- 0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
- 0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
- 0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
- 0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
- 0x47,0x74,0xE8,0x33,
- };
-static unsigned char dh512_g[]={
- 0x02,
- };
+static unsigned char dh512_g[] = {
+ 0x02,
+};
-/* And the function that parses the above "standard" parameters, again, straight
- * out of s_server. */
+/*
+ * And the function that parses the above "standard" parameters, again,
+ * straight out of s_server.
+ */
static DH *get_dh512(void)
- {
- DH *dh=NULL;
+{
+ DH *dh = NULL;
- if ((dh=DH_new()) == NULL) return(NULL);
- dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
- dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
- if ((dh->p == NULL) || (dh->g == NULL))
- return(NULL);
- return(dh);
- }
+ if ((dh = DH_new()) == NULL)
+ return (NULL);
+ dh->p = BN_bin2bn(dh512_p, sizeof(dh512_p), NULL);
+ dh->g = BN_bin2bn(dh512_g, sizeof(dh512_g), NULL);
+ if ((dh->p == NULL) || (dh->g == NULL))
+ return (NULL);
+ return (dh);
+}
/* Various help/error messages used by main() */
static int usage(const char *errstr, int isunknownarg)
{
- if(isunknownarg)
- fprintf(stderr, "Error: unknown argument '%s'\n", errstr);
- else
- fprintf(stderr, "Error: %s\n", errstr);
- fprintf(stderr, "%s\n", helpstring);
- return 1;
+ if (isunknownarg)
+ fprintf(stderr, "Error: unknown argument '%s'\n", errstr);
+ else
+ fprintf(stderr, "Error: %s\n", errstr);
+ fprintf(stderr, "%s\n", helpstring);
+ return 1;
}
static int err_str0(const char *str0)
{
- fprintf(stderr, "%s\n", str0);
- return 1;
+ fprintf(stderr, "%s\n", str0);
+ return 1;
}
static int err_str1(const char *fmt, const char *str1)
{
- fprintf(stderr, fmt, str1);
- fprintf(stderr, "\n");
- return 1;
+ fprintf(stderr, fmt, str1);
+ fprintf(stderr, "\n");
+ return 1;
}
static int parse_max_tunnels(const char *s, unsigned int *maxtunnels)
{
- unsigned long l;
- if(!int_strtoul(s, &l) || (l < 1) || (l > 1024)) {
- fprintf(stderr, "Error, '%s' is an invalid value for "
- "maxtunnels\n", s);
- return 0;
- }
- *maxtunnels = (unsigned int)l;
- return 1;
+ unsigned long l;
+ if (!int_strtoul(s, &l) || (l < 1) || (l > 1024)) {
+ fprintf(stderr, "Error, '%s' is an invalid value for "
+ "maxtunnels\n", s);
+ return 0;
+ }
+ *maxtunnels = (unsigned int)l;
+ return 1;
}
static int parse_server_mode(const char *s, int *servermode)
{
- unsigned long l;
- if(!int_strtoul(s, &l) || (l > 1)) {
- fprintf(stderr, "Error, '%s' is an invalid value for the "
- "server mode\n", s);
- return 0;
- }
- *servermode = (int)l;
- return 1;
+ unsigned long l;
+ if (!int_strtoul(s, &l) || (l > 1)) {
+ fprintf(stderr, "Error, '%s' is an invalid value for the "
+ "server mode\n", s);
+ return 0;
+ }
+ *servermode = (int)l;
+ return 1;
}
static int parse_dh_special(const char *s, const char **dh_special)
{
- if((strcmp(s, "NULL") == 0) || (strcmp(s, "generate") == 0) ||
- (strcmp(s, "standard") == 0)) {
- *dh_special = s;
- return 1;
- }
- fprintf(stderr, "Error, '%s' is an invalid value for 'dh_special'\n", s);
- return 0;
+ if ((strcmp(s, "NULL") == 0) || (strcmp(s, "generate") == 0) ||
+ (strcmp(s, "standard") == 0)) {
+ *dh_special = s;
+ return 1;
+ }
+ fprintf(stderr, "Error, '%s' is an invalid value for 'dh_special'\n", s);
+ return 0;
}
static int parse_verify_level(const char *s, unsigned int *verify_level)
{
- unsigned long l;
- if(!int_strtoul(s, &l) || (l > 3)) {
- fprintf(stderr, "Error, '%s' is an invalid value for "
- "out_verify\n", s);
- return 0;
- }
- *verify_level = (unsigned int)l;
- return 1;
+ unsigned long l;
+ if (!int_strtoul(s, &l) || (l > 3)) {
+ fprintf(stderr, "Error, '%s' is an invalid value for "
+ "out_verify\n", s);
+ return 0;
+ }
+ *verify_level = (unsigned int)l;
+ return 1;
}
static int parse_verify_depth(const char *s, unsigned int *verify_depth)
{
- unsigned long l;
- if(!int_strtoul(s, &l) || (l < 1) || (l > 50)) {
- fprintf(stderr, "Error, '%s' is an invalid value for "
- "verify_depth\n", s);
- return 0;
- }
- *verify_depth = (unsigned int)l;
- return 1;
+ unsigned long l;
+ if (!int_strtoul(s, &l) || (l < 1) || (l > 50)) {
+ fprintf(stderr, "Error, '%s' is an invalid value for "
+ "verify_depth\n", s);
+ return 0;
+ }
+ *verify_depth = (unsigned int)l;
+ return 1;
}
/* Some fprintf format strings used when tunnels close */
static const char *io_stats_dirty =
-" SSL traffic; %8lu bytes in, %8lu bytes out\n";
+ " SSL traffic; %8lu bytes in, %8lu bytes out\n";
static const char *io_stats_clean =
-" clear traffic; %8lu bytes in, %8lu bytes out\n";
+ " clear traffic; %8lu bytes in, %8lu bytes out\n";
int main(int argc, char *argv[])
{
- unsigned int loop;
- int newfd;
- tunala_world_t world;
- tunala_item_t *t_item;
- const char *proxy_ip;
- unsigned short proxy_port;
- /* Overridables */
- const char *proxyhost = def_proxyhost;
- const char *listenhost = def_listenhost;
- unsigned int max_tunnels = def_max_tunnels;
- const char *cacert = def_cacert;
- const char *cert = def_cert;
- const char *key = def_key;
- const char *dcert = def_dcert;
- const char *dkey = def_dkey;
- const char *engine_id = def_engine_id;
- int server_mode = def_server_mode;
- int flipped = def_flipped;
- const char *cipher_list = def_cipher_list;
- const char *dh_file = def_dh_file;
- const char *dh_special = def_dh_special;
- int tmp_rsa = def_tmp_rsa;
- int ctx_options = def_ctx_options;
- int verify_mode = def_verify_mode;
- unsigned int verify_depth = def_verify_depth;
- int out_state = def_out_state;
- unsigned int out_verify = def_out_verify;
- int out_totals = def_out_totals;
- int out_conns = def_out_conns;
+ unsigned int loop;
+ int newfd;
+ tunala_world_t world;
+ tunala_item_t *t_item;
+ const char *proxy_ip;
+ unsigned short proxy_port;
+ /* Overridables */
+ const char *proxyhost = def_proxyhost;
+ const char *listenhost = def_listenhost;
+ unsigned int max_tunnels = def_max_tunnels;
+ const char *cacert = def_cacert;
+ const char *cert = def_cert;
+ const char *key = def_key;
+ const char *dcert = def_dcert;
+ const char *dkey = def_dkey;
+ const char *engine_id = def_engine_id;
+ int server_mode = def_server_mode;
+ int flipped = def_flipped;
+ const char *cipher_list = def_cipher_list;
+ const char *dh_file = def_dh_file;
+ const char *dh_special = def_dh_special;
+ int tmp_rsa = def_tmp_rsa;
+ int ctx_options = def_ctx_options;
+ int verify_mode = def_verify_mode;
+ unsigned int verify_depth = def_verify_depth;
+ int out_state = def_out_state;
+ unsigned int out_verify = def_out_verify;
+ int out_totals = def_out_totals;
+ int out_conns = def_out_conns;
/* Parse command-line arguments */
-next_arg:
- argc--; argv++;
- if(argc > 0) {
- if(strcmp(*argv, "-listen") == 0) {
- if(argc < 2)
- return usage("-listen requires an argument", 0);
- argc--; argv++;
- listenhost = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-proxy") == 0) {
- if(argc < 2)
- return usage("-proxy requires an argument", 0);
- argc--; argv++;
- proxyhost = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-maxtunnels") == 0) {
- if(argc < 2)
- return usage("-maxtunnels requires an argument", 0);
- argc--; argv++;
- if(!parse_max_tunnels(*argv, &max_tunnels))
- return 1;
- goto next_arg;
- } else if(strcmp(*argv, "-cacert") == 0) {
- if(argc < 2)
- return usage("-cacert requires an argument", 0);
- argc--; argv++;
- if(strcmp(*argv, "NULL") == 0)
- cacert = NULL;
- else
- cacert = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-cert") == 0) {
- if(argc < 2)
- return usage("-cert requires an argument", 0);
- argc--; argv++;
- if(strcmp(*argv, "NULL") == 0)
- cert = NULL;
- else
- cert = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-key") == 0) {
- if(argc < 2)
- return usage("-key requires an argument", 0);
- argc--; argv++;
- if(strcmp(*argv, "NULL") == 0)
- key = NULL;
- else
- key = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-dcert") == 0) {
- if(argc < 2)
- return usage("-dcert requires an argument", 0);
- argc--; argv++;
- if(strcmp(*argv, "NULL") == 0)
- dcert = NULL;
- else
- dcert = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-dkey") == 0) {
- if(argc < 2)
- return usage("-dkey requires an argument", 0);
- argc--; argv++;
- if(strcmp(*argv, "NULL") == 0)
- dkey = NULL;
- else
- dkey = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-engine") == 0) {
- if(argc < 2)
- return usage("-engine requires an argument", 0);
- argc--; argv++;
- engine_id = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-server") == 0) {
- if(argc < 2)
- return usage("-server requires an argument", 0);
- argc--; argv++;
- if(!parse_server_mode(*argv, &server_mode))
- return 1;
- goto next_arg;
- } else if(strcmp(*argv, "-flipped") == 0) {
- if(argc < 2)
- return usage("-flipped requires an argument", 0);
- argc--; argv++;
- if(!parse_server_mode(*argv, &flipped))
- return 1;
- goto next_arg;
- } else if(strcmp(*argv, "-cipher") == 0) {
- if(argc < 2)
- return usage("-cipher requires an argument", 0);
- argc--; argv++;
- cipher_list = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-dh_file") == 0) {
- if(argc < 2)
- return usage("-dh_file requires an argument", 0);
- if(dh_special)
- return usage("cannot mix -dh_file with "
- "-dh_special", 0);
- argc--; argv++;
- dh_file = *argv;
- goto next_arg;
- } else if(strcmp(*argv, "-dh_special") == 0) {
- if(argc < 2)
- return usage("-dh_special requires an argument", 0);
- if(dh_file)
- return usage("cannot mix -dh_file with "
- "-dh_special", 0);
- argc--; argv++;
- if(!parse_dh_special(*argv, &dh_special))
- return 1;
- goto next_arg;
- } else if(strcmp(*argv, "-no_tmp_rsa") == 0) {
- tmp_rsa = 0;
- goto next_arg;
- } else if(strcmp(*argv, "-no_ssl2") == 0) {
- ctx_options |= SSL_OP_NO_SSLv2;
- goto next_arg;
- } else if(strcmp(*argv, "-no_ssl3") == 0) {
- ctx_options |= SSL_OP_NO_SSLv3;
- goto next_arg;
- } else if(strcmp(*argv, "-no_tls1") == 0) {
- ctx_options |= SSL_OP_NO_TLSv1;
- goto next_arg;
- } else if(strcmp(*argv, "-v_peer") == 0) {
- verify_mode |= SSL_VERIFY_PEER;
- goto next_arg;
- } else if(strcmp(*argv, "-v_strict") == 0) {
- verify_mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
- goto next_arg;
- } else if(strcmp(*argv, "-v_once") == 0) {
- verify_mode |= SSL_VERIFY_CLIENT_ONCE;
- goto next_arg;
- } else if(strcmp(*argv, "-v_depth") == 0) {
- if(argc < 2)
- return usage("-v_depth requires an argument", 0);
- argc--; argv++;
- if(!parse_verify_depth(*argv, &verify_depth))
- return 1;
- goto next_arg;
- } else if(strcmp(*argv, "-out_state") == 0) {
- out_state = 1;
- goto next_arg;
- } else if(strcmp(*argv, "-out_verify") == 0) {
- if(argc < 2)
- return usage("-out_verify requires an argument", 0);
- argc--; argv++;
- if(!parse_verify_level(*argv, &out_verify))
- return 1;
- goto next_arg;
- } else if(strcmp(*argv, "-out_totals") == 0) {
- out_totals = 1;
- goto next_arg;
- } else if(strcmp(*argv, "-out_conns") == 0) {
- out_conns = 1;
- goto next_arg;
- } else if((strcmp(*argv, "-h") == 0) ||
- (strcmp(*argv, "-help") == 0) ||
- (strcmp(*argv, "-?") == 0)) {
- fprintf(stderr, "%s\n", helpstring);
- return 0;
- } else
- return usage(*argv, 1);
- }
- /* Run any sanity checks we want here */
- if(!cert && !dcert && server_mode)
- fprintf(stderr, "WARNING: you are running an SSL server without "
- "a certificate - this may not work!\n");
+ next_arg:
+ argc--;
+ argv++;
+ if (argc > 0) {
+ if (strcmp(*argv, "-listen") == 0) {
+ if (argc < 2)
+ return usage("-listen requires an argument", 0);
+ argc--;
+ argv++;
+ listenhost = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-proxy") == 0) {
+ if (argc < 2)
+ return usage("-proxy requires an argument", 0);
+ argc--;
+ argv++;
+ proxyhost = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-maxtunnels") == 0) {
+ if (argc < 2)
+ return usage("-maxtunnels requires an argument", 0);
+ argc--;
+ argv++;
+ if (!parse_max_tunnels(*argv, &max_tunnels))
+ return 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-cacert") == 0) {
+ if (argc < 2)
+ return usage("-cacert requires an argument", 0);
+ argc--;
+ argv++;
+ if (strcmp(*argv, "NULL") == 0)
+ cacert = NULL;
+ else
+ cacert = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-cert") == 0) {
+ if (argc < 2)
+ return usage("-cert requires an argument", 0);
+ argc--;
+ argv++;
+ if (strcmp(*argv, "NULL") == 0)
+ cert = NULL;
+ else
+ cert = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-key") == 0) {
+ if (argc < 2)
+ return usage("-key requires an argument", 0);
+ argc--;
+ argv++;
+ if (strcmp(*argv, "NULL") == 0)
+ key = NULL;
+ else
+ key = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-dcert") == 0) {
+ if (argc < 2)
+ return usage("-dcert requires an argument", 0);
+ argc--;
+ argv++;
+ if (strcmp(*argv, "NULL") == 0)
+ dcert = NULL;
+ else
+ dcert = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-dkey") == 0) {
+ if (argc < 2)
+ return usage("-dkey requires an argument", 0);
+ argc--;
+ argv++;
+ if (strcmp(*argv, "NULL") == 0)
+ dkey = NULL;
+ else
+ dkey = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-engine") == 0) {
+ if (argc < 2)
+ return usage("-engine requires an argument", 0);
+ argc--;
+ argv++;
+ engine_id = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-server") == 0) {
+ if (argc < 2)
+ return usage("-server requires an argument", 0);
+ argc--;
+ argv++;
+ if (!parse_server_mode(*argv, &server_mode))
+ return 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-flipped") == 0) {
+ if (argc < 2)
+ return usage("-flipped requires an argument", 0);
+ argc--;
+ argv++;
+ if (!parse_server_mode(*argv, &flipped))
+ return 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-cipher") == 0) {
+ if (argc < 2)
+ return usage("-cipher requires an argument", 0);
+ argc--;
+ argv++;
+ cipher_list = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-dh_file") == 0) {
+ if (argc < 2)
+ return usage("-dh_file requires an argument", 0);
+ if (dh_special)
+ return usage("cannot mix -dh_file with " "-dh_special", 0);
+ argc--;
+ argv++;
+ dh_file = *argv;
+ goto next_arg;
+ } else if (strcmp(*argv, "-dh_special") == 0) {
+ if (argc < 2)
+ return usage("-dh_special requires an argument", 0);
+ if (dh_file)
+ return usage("cannot mix -dh_file with " "-dh_special", 0);
+ argc--;
+ argv++;
+ if (!parse_dh_special(*argv, &dh_special))
+ return 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-no_tmp_rsa") == 0) {
+ tmp_rsa = 0;
+ goto next_arg;
+ } else if (strcmp(*argv, "-no_ssl2") == 0) {
+ ctx_options |= SSL_OP_NO_SSLv2;
+ goto next_arg;
+ } else if (strcmp(*argv, "-no_ssl3") == 0) {
+ ctx_options |= SSL_OP_NO_SSLv3;
+ goto next_arg;
+ } else if (strcmp(*argv, "-no_tls1") == 0) {
+ ctx_options |= SSL_OP_NO_TLSv1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-v_peer") == 0) {
+ verify_mode |= SSL_VERIFY_PEER;
+ goto next_arg;
+ } else if (strcmp(*argv, "-v_strict") == 0) {
+ verify_mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
+ goto next_arg;
+ } else if (strcmp(*argv, "-v_once") == 0) {
+ verify_mode |= SSL_VERIFY_CLIENT_ONCE;
+ goto next_arg;
+ } else if (strcmp(*argv, "-v_depth") == 0) {
+ if (argc < 2)
+ return usage("-v_depth requires an argument", 0);
+ argc--;
+ argv++;
+ if (!parse_verify_depth(*argv, &verify_depth))
+ return 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-out_state") == 0) {
+ out_state = 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-out_verify") == 0) {
+ if (argc < 2)
+ return usage("-out_verify requires an argument", 0);
+ argc--;
+ argv++;
+ if (!parse_verify_level(*argv, &out_verify))
+ return 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-out_totals") == 0) {
+ out_totals = 1;
+ goto next_arg;
+ } else if (strcmp(*argv, "-out_conns") == 0) {
+ out_conns = 1;
+ goto next_arg;
+ } else if ((strcmp(*argv, "-h") == 0) ||
+ (strcmp(*argv, "-help") == 0) ||
+ (strcmp(*argv, "-?") == 0)) {
+ fprintf(stderr, "%s\n", helpstring);
+ return 0;
+ } else
+ return usage(*argv, 1);
+ }
+ /* Run any sanity checks we want here */
+ if (!cert && !dcert && server_mode)
+ fprintf(stderr, "WARNING: you are running an SSL server without "
+ "a certificate - this may not work!\n");
- /* Initialise network stuff */
- if(!ip_initialise())
- return err_str0("ip_initialise failed");
- /* Create the SSL_CTX */
- if((world.ssl_ctx = initialise_ssl_ctx(server_mode, engine_id,
- cacert, cert, key, dcert, dkey, cipher_list, dh_file,
- dh_special, tmp_rsa, ctx_options, out_state, out_verify,
- verify_mode, verify_depth)) == NULL)
- return err_str1("initialise_ssl_ctx(engine_id=%s) failed",
- (engine_id == NULL) ? "NULL" : engine_id);
- if(engine_id)
- fprintf(stderr, "Info, engine '%s' initialised\n", engine_id);
- /* Create the listener */
- if((world.listen_fd = ip_create_listener(listenhost)) == -1)
- return err_str1("ip_create_listener(%s) failed", listenhost);
- fprintf(stderr, "Info, listening on '%s'\n", listenhost);
- if(!ip_parse_address(proxyhost, &proxy_ip, &proxy_port, 0))
- return err_str1("ip_parse_address(%s) failed", proxyhost);
- fprintf(stderr, "Info, proxying to '%s' (%d.%d.%d.%d:%d)\n", proxyhost,
- (int)proxy_ip[0], (int)proxy_ip[1],
- (int)proxy_ip[2], (int)proxy_ip[3], (int)proxy_port);
- fprintf(stderr, "Info, set maxtunnels to %d\n", (int)max_tunnels);
- fprintf(stderr, "Info, set to operate as an SSL %s\n",
- (server_mode ? "server" : "client"));
- /* Initialise the rest of the stuff */
- world.tunnels_used = world.tunnels_size = 0;
- world.tunnels = NULL;
- world.server_mode = server_mode;
- selector_init(&world.selector);
+ /* Initialise network stuff */
+ if (!ip_initialise())
+ return err_str0("ip_initialise failed");
+ /* Create the SSL_CTX */
+ if ((world.ssl_ctx = initialise_ssl_ctx(server_mode, engine_id,
+ cacert, cert, key, dcert, dkey,
+ cipher_list, dh_file, dh_special,
+ tmp_rsa, ctx_options, out_state,
+ out_verify, verify_mode,
+ verify_depth)) == NULL)
+ return err_str1("initialise_ssl_ctx(engine_id=%s) failed",
+ (engine_id == NULL) ? "NULL" : engine_id);
+ if (engine_id)
+ fprintf(stderr, "Info, engine '%s' initialised\n", engine_id);
+ /* Create the listener */
+ if ((world.listen_fd = ip_create_listener(listenhost)) == -1)
+ return err_str1("ip_create_listener(%s) failed", listenhost);
+ fprintf(stderr, "Info, listening on '%s'\n", listenhost);
+ if (!ip_parse_address(proxyhost, &proxy_ip, &proxy_port, 0))
+ return err_str1("ip_parse_address(%s) failed", proxyhost);
+ fprintf(stderr, "Info, proxying to '%s' (%d.%d.%d.%d:%d)\n", proxyhost,
+ (int)proxy_ip[0], (int)proxy_ip[1],
+ (int)proxy_ip[2], (int)proxy_ip[3], (int)proxy_port);
+ fprintf(stderr, "Info, set maxtunnels to %d\n", (int)max_tunnels);
+ fprintf(stderr, "Info, set to operate as an SSL %s\n",
+ (server_mode ? "server" : "client"));
+ /* Initialise the rest of the stuff */
+ world.tunnels_used = world.tunnels_size = 0;
+ world.tunnels = NULL;
+ world.server_mode = server_mode;
+ selector_init(&world.selector);
/* We're ready to loop */
-main_loop:
- /* Should we listen for *new* tunnels? */
- if(world.tunnels_used < max_tunnels)
- selector_add_listener(&world.selector, world.listen_fd);
- /* We should add in our existing tunnels */
- for(loop = 0; loop < world.tunnels_used; loop++)
- selector_add_tunala(&world.selector, world.tunnels + loop);
- /* Now do the select */
- switch(selector_select(&world.selector)) {
- case -1:
- if(errno != EINTR) {
- fprintf(stderr, "selector_select returned a "
- "badness error.\n");
- goto shouldnt_happen;
- }
- fprintf(stderr, "Warn, selector interrupted by a signal\n");
- goto main_loop;
- case 0:
- fprintf(stderr, "Warn, selector_select returned 0 - signal?""?\n");
- goto main_loop;
- default:
- break;
- }
- /* Accept new connection if we should and can */
- if((world.tunnels_used < max_tunnels) && (selector_get_listener(
- &world.selector, world.listen_fd,
- &newfd) == 1)) {
- /* We have a new connection */
- if(!tunala_world_new_item(&world, newfd, proxy_ip,
- proxy_port, flipped))
- fprintf(stderr, "tunala_world_new_item failed\n");
- else if(out_conns)
- fprintf(stderr, "Info, new tunnel opened, now up to "
- "%d\n", world.tunnels_used);
- }
- /* Give each tunnel its moment, note the while loop is because it makes
- * the logic easier than with "for" to deal with an array that may shift
- * because of deletes. */
- loop = 0;
- t_item = world.tunnels;
- while(loop < world.tunnels_used) {
- if(!tunala_item_io(&world.selector, t_item)) {
- /* We're closing whether for reasons of an error or a
- * natural close. Don't increment loop or t_item because
- * the next item is moving to us! */
- if(!out_totals)
- goto skip_totals;
- fprintf(stderr, "Tunnel closing, traffic stats follow\n");
- /* Display the encrypted (over the network) stats */
- fprintf(stderr, io_stats_dirty,
- buffer_total_in(state_machine_get_buffer(
- &t_item->sm,SM_DIRTY_IN)),
- buffer_total_out(state_machine_get_buffer(
- &t_item->sm,SM_DIRTY_OUT)));
- /* Display the local (tunnelled) stats. NB: Data we
- * *receive* is data sent *out* of the state_machine on
- * its 'clean' side. Hence the apparent back-to-front
- * OUT/IN mixup here :-) */
- fprintf(stderr, io_stats_clean,
- buffer_total_out(state_machine_get_buffer(
- &t_item->sm,SM_CLEAN_OUT)),
- buffer_total_in(state_machine_get_buffer(
- &t_item->sm,SM_CLEAN_IN)));
-skip_totals:
- tunala_world_del_item(&world, loop);
- if(out_conns)
- fprintf(stderr, "Info, tunnel closed, down to %d\n",
- world.tunnels_used);
- }
- else {
- /* Move to the next item */
- loop++;
- t_item++;
- }
- }
- goto main_loop;
- /* Should never get here */
-shouldnt_happen:
- abort();
- return 1;
+ main_loop:
+ /* Should we listen for *new* tunnels? */
+ if (world.tunnels_used < max_tunnels)
+ selector_add_listener(&world.selector, world.listen_fd);
+ /* We should add in our existing tunnels */
+ for (loop = 0; loop < world.tunnels_used; loop++)
+ selector_add_tunala(&world.selector, world.tunnels + loop);
+ /* Now do the select */
+ switch (selector_select(&world.selector)) {
+ case -1:
+ if (errno != EINTR) {
+ fprintf(stderr, "selector_select returned a " "badness error.\n");
+ goto shouldnt_happen;
+ }
+ fprintf(stderr, "Warn, selector interrupted by a signal\n");
+ goto main_loop;
+ case 0:
+ fprintf(stderr, "Warn, selector_select returned 0 - signal?" "?\n");
+ goto main_loop;
+ default:
+ break;
+ }
+ /* Accept new connection if we should and can */
+ if ((world.tunnels_used < max_tunnels)
+ && (selector_get_listener(&world.selector, world.listen_fd, &newfd) ==
+ 1)) {
+ /* We have a new connection */
+ if (!tunala_world_new_item(&world, newfd, proxy_ip,
+ proxy_port, flipped))
+ fprintf(stderr, "tunala_world_new_item failed\n");
+ else if (out_conns)
+ fprintf(stderr, "Info, new tunnel opened, now up to "
+ "%d\n", world.tunnels_used);
+ }
+ /*
+ * Give each tunnel its moment, note the while loop is because it makes
+ * the logic easier than with "for" to deal with an array that may shift
+ * because of deletes.
+ */
+ loop = 0;
+ t_item = world.tunnels;
+ while (loop < world.tunnels_used) {
+ if (!tunala_item_io(&world.selector, t_item)) {
+ /*
+ * We're closing whether for reasons of an error or a natural
+ * close. Don't increment loop or t_item because the next item is
+ * moving to us!
+ */
+ if (!out_totals)
+ goto skip_totals;
+ fprintf(stderr, "Tunnel closing, traffic stats follow\n");
+ /* Display the encrypted (over the network) stats */
+ fprintf(stderr, io_stats_dirty,
+ buffer_total_in(state_machine_get_buffer
+ (&t_item->sm, SM_DIRTY_IN)),
+ buffer_total_out(state_machine_get_buffer
+ (&t_item->sm, SM_DIRTY_OUT)));
+ /*
+ * Display the local (tunnelled) stats. NB: Data we *receive* is
+ * data sent *out* of the state_machine on its 'clean' side.
+ * Hence the apparent back-to-front OUT/IN mixup here :-)
+ */
+ fprintf(stderr, io_stats_clean,
+ buffer_total_out(state_machine_get_buffer
+ (&t_item->sm, SM_CLEAN_OUT)),
+ buffer_total_in(state_machine_get_buffer
+ (&t_item->sm, SM_CLEAN_IN)));
+ skip_totals:
+ tunala_world_del_item(&world, loop);
+ if (out_conns)
+ fprintf(stderr, "Info, tunnel closed, down to %d\n",
+ world.tunnels_used);
+ } else {
+ /* Move to the next item */
+ loop++;
+ t_item++;
+ }
+ }
+ goto main_loop;
+ /* Should never get here */
+ shouldnt_happen:
+ abort();
+ return 1;
}
/****************/
static int ctx_set_cert(SSL_CTX *ctx, const char *cert, const char *key)
{
- FILE *fp = NULL;
- X509 *x509 = NULL;
- EVP_PKEY *pkey = NULL;
- int toret = 0; /* Assume an error */
+ FILE *fp = NULL;
+ X509 *x509 = NULL;
+ EVP_PKEY *pkey = NULL;
+ int toret = 0; /* Assume an error */
- /* cert */
- if(cert) {
- if((fp = fopen(cert, "r")) == NULL) {
- fprintf(stderr, "Error opening cert file '%s'\n", cert);
- goto err;
- }
- if(!PEM_read_X509(fp, &x509, NULL, NULL)) {
- fprintf(stderr, "Error reading PEM cert from '%s'\n",
- cert);
- goto err;
- }
- if(!SSL_CTX_use_certificate(ctx, x509)) {
- fprintf(stderr, "Error, cert in '%s' can not be used\n",
- cert);
- goto err;
- }
- /* Clear the FILE* for reuse in the "key" code */
- fclose(fp);
- fp = NULL;
- fprintf(stderr, "Info, operating with cert in '%s'\n", cert);
- /* If a cert was given without matching key, we assume the same
- * file contains the required key. */
- if(!key)
- key = cert;
- } else {
- if(key)
- fprintf(stderr, "Error, can't specify a key without a "
- "corresponding certificate\n");
- else
- fprintf(stderr, "Error, ctx_set_cert called with "
- "NULLs!\n");
- goto err;
- }
- /* key */
- if(key) {
- if((fp = fopen(key, "r")) == NULL) {
- fprintf(stderr, "Error opening key file '%s'\n", key);
- goto err;
- }
- if(!PEM_read_PrivateKey(fp, &pkey, NULL, NULL)) {
- fprintf(stderr, "Error reading PEM key from '%s'\n",
- key);
- goto err;
- }
- if(!SSL_CTX_use_PrivateKey(ctx, pkey)) {
- fprintf(stderr, "Error, key in '%s' can not be used\n",
- key);
- goto err;
- }
- fprintf(stderr, "Info, operating with key in '%s'\n", key);
- } else
- fprintf(stderr, "Info, operating without a cert or key\n");
- /* Success */
- toret = 1; err:
- if(x509)
- X509_free(x509);
- if(pkey)
- EVP_PKEY_free(pkey);
- if(fp)
- fclose(fp);
- return toret;
+ /* cert */
+ if (cert) {
+ if ((fp = fopen(cert, "r")) == NULL) {
+ fprintf(stderr, "Error opening cert file '%s'\n", cert);
+ goto err;
+ }
+ if (!PEM_read_X509(fp, &x509, NULL, NULL)) {
+ fprintf(stderr, "Error reading PEM cert from '%s'\n", cert);
+ goto err;
+ }
+ if (!SSL_CTX_use_certificate(ctx, x509)) {
+ fprintf(stderr, "Error, cert in '%s' can not be used\n", cert);
+ goto err;
+ }
+ /* Clear the FILE* for reuse in the "key" code */
+ fclose(fp);
+ fp = NULL;
+ fprintf(stderr, "Info, operating with cert in '%s'\n", cert);
+ /*
+ * If a cert was given without matching key, we assume the same file
+ * contains the required key.
+ */
+ if (!key)
+ key = cert;
+ } else {
+ if (key)
+ fprintf(stderr, "Error, can't specify a key without a "
+ "corresponding certificate\n");
+ else
+ fprintf(stderr, "Error, ctx_set_cert called with " "NULLs!\n");
+ goto err;
+ }
+ /* key */
+ if (key) {
+ if ((fp = fopen(key, "r")) == NULL) {
+ fprintf(stderr, "Error opening key file '%s'\n", key);
+ goto err;
+ }
+ if (!PEM_read_PrivateKey(fp, &pkey, NULL, NULL)) {
+ fprintf(stderr, "Error reading PEM key from '%s'\n", key);
+ goto err;
+ }
+ if (!SSL_CTX_use_PrivateKey(ctx, pkey)) {
+ fprintf(stderr, "Error, key in '%s' can not be used\n", key);
+ goto err;
+ }
+ fprintf(stderr, "Info, operating with key in '%s'\n", key);
+ } else
+ fprintf(stderr, "Info, operating without a cert or key\n");
+ /* Success */
+ toret = 1;
+ err:
+ if (x509)
+ X509_free(x509);
+ if (pkey)
+ EVP_PKEY_free(pkey);
+ if (fp)
+ fclose(fp);
+ return toret;
}
-static int ctx_set_dh(SSL_CTX *ctx, const char *dh_file, const char *dh_special)
+static int ctx_set_dh(SSL_CTX *ctx, const char *dh_file,
+ const char *dh_special)
{
- DH *dh = NULL;
- FILE *fp = NULL;
+ DH *dh = NULL;
+ FILE *fp = NULL;
- if(dh_special) {
- if(strcmp(dh_special, "NULL") == 0)
- return 1;
- if(strcmp(dh_special, "standard") == 0) {
- if((dh = get_dh512()) == NULL) {
- fprintf(stderr, "Error, can't parse 'standard'"
- " DH parameters\n");
- return 0;
- }
- fprintf(stderr, "Info, using 'standard' DH parameters\n");
- goto do_it;
- }
- if(strcmp(dh_special, "generate") != 0)
- /* This shouldn't happen - screening values is handled
- * in main(). */
- abort();
- fprintf(stderr, "Info, generating DH parameters ... ");
- fflush(stderr);
- if((dh = DH_generate_parameters(512, DH_GENERATOR_5,
- NULL, NULL)) == NULL) {
- fprintf(stderr, "error!\n");
- return 0;
- }
- fprintf(stderr, "complete\n");
- goto do_it;
- }
- /* So, we're loading dh_file */
- if((fp = fopen(dh_file, "r")) == NULL) {
- fprintf(stderr, "Error, couldn't open '%s' for DH parameters\n",
- dh_file);
- return 0;
- }
- dh = PEM_read_DHparams(fp, NULL, NULL, NULL);
- fclose(fp);
- if(dh == NULL) {
- fprintf(stderr, "Error, could not parse DH parameters from '%s'\n",
- dh_file);
- return 0;
- }
- fprintf(stderr, "Info, using DH parameters from file '%s'\n", dh_file);
-do_it:
- SSL_CTX_set_tmp_dh(ctx, dh);
- DH_free(dh);
- return 1;
+ if (dh_special) {
+ if (strcmp(dh_special, "NULL") == 0)
+ return 1;
+ if (strcmp(dh_special, "standard") == 0) {
+ if ((dh = get_dh512()) == NULL) {
+ fprintf(stderr, "Error, can't parse 'standard'"
+ " DH parameters\n");
+ return 0;
+ }
+ fprintf(stderr, "Info, using 'standard' DH parameters\n");
+ goto do_it;
+ }
+ if (strcmp(dh_special, "generate") != 0)
+ /*
+ * This shouldn't happen - screening values is handled in main().
+ */
+ abort();
+ fprintf(stderr, "Info, generating DH parameters ... ");
+ fflush(stderr);
+ if ((dh = DH_generate_parameters(512, DH_GENERATOR_5,
+ NULL, NULL)) == NULL) {
+ fprintf(stderr, "error!\n");
+ return 0;
+ }
+ fprintf(stderr, "complete\n");
+ goto do_it;
+ }
+ /* So, we're loading dh_file */
+ if ((fp = fopen(dh_file, "r")) == NULL) {
+ fprintf(stderr, "Error, couldn't open '%s' for DH parameters\n",
+ dh_file);
+ return 0;
+ }
+ dh = PEM_read_DHparams(fp, NULL, NULL, NULL);
+ fclose(fp);
+ if (dh == NULL) {
+ fprintf(stderr, "Error, could not parse DH parameters from '%s'\n",
+ dh_file);
+ return 0;
+ }
+ fprintf(stderr, "Info, using DH parameters from file '%s'\n", dh_file);
+ do_it:
+ SSL_CTX_set_tmp_dh(ctx, dh);
+ DH_free(dh);
+ return 1;
}
static SSL_CTX *initialise_ssl_ctx(int server_mode, const char *engine_id,
- const char *CAfile, const char *cert, const char *key,
- const char *dcert, const char *dkey, const char *cipher_list,
- const char *dh_file, const char *dh_special, int tmp_rsa,
- int ctx_options, int out_state, int out_verify, int verify_mode,
- unsigned int verify_depth)
+ const char *CAfile, const char *cert,
+ const char *key, const char *dcert,
+ const char *dkey, const char *cipher_list,
+ const char *dh_file,
+ const char *dh_special, int tmp_rsa,
+ int ctx_options, int out_state,
+ int out_verify, int verify_mode,
+ unsigned int verify_depth)
{
- SSL_CTX *ctx = NULL, *ret = NULL;
- SSL_METHOD *meth;
- ENGINE *e = NULL;
+ SSL_CTX *ctx = NULL, *ret = NULL;
+ SSL_METHOD *meth;
+ ENGINE *e = NULL;
- OpenSSL_add_ssl_algorithms();
- SSL_load_error_strings();
+ OpenSSL_add_ssl_algorithms();
+ SSL_load_error_strings();
- meth = (server_mode ? SSLv23_server_method() : SSLv23_client_method());
- if(meth == NULL)
- goto err;
- if(engine_id) {
- ENGINE_load_builtin_engines();
- if((e = ENGINE_by_id(engine_id)) == NULL) {
- fprintf(stderr, "Error obtaining '%s' engine, openssl "
- "errors follow\n", engine_id);
- goto err;
- }
- if(!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
- fprintf(stderr, "Error assigning '%s' engine, openssl "
- "errors follow\n", engine_id);
- goto err;
- }
- ENGINE_free(e);
- }
- if((ctx = SSL_CTX_new(meth)) == NULL)
- goto err;
- /* cacert */
- if(CAfile) {
- if(!X509_STORE_load_locations(SSL_CTX_get_cert_store(ctx),
- CAfile, NULL)) {
- fprintf(stderr, "Error loading CA cert(s) in '%s'\n",
- CAfile);
- goto err;
- }
- fprintf(stderr, "Info, operating with CA cert(s) in '%s'\n",
- CAfile);
- } else
- fprintf(stderr, "Info, operating without a CA cert(-list)\n");
- if(!SSL_CTX_set_default_verify_paths(ctx)) {
- fprintf(stderr, "Error setting default verify paths\n");
- goto err;
- }
+ meth = (server_mode ? SSLv23_server_method() : SSLv23_client_method());
+ if (meth == NULL)
+ goto err;
+ if (engine_id) {
+ ENGINE_load_builtin_engines();
+ if ((e = ENGINE_by_id(engine_id)) == NULL) {
+ fprintf(stderr, "Error obtaining '%s' engine, openssl "
+ "errors follow\n", engine_id);
+ goto err;
+ }
+ if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
+ fprintf(stderr, "Error assigning '%s' engine, openssl "
+ "errors follow\n", engine_id);
+ goto err;
+ }
+ ENGINE_free(e);
+ }
+ if ((ctx = SSL_CTX_new(meth)) == NULL)
+ goto err;
+ /* cacert */
+ if (CAfile) {
+ if (!X509_STORE_load_locations(SSL_CTX_get_cert_store(ctx),
+ CAfile, NULL)) {
+ fprintf(stderr, "Error loading CA cert(s) in '%s'\n", CAfile);
+ goto err;
+ }
+ fprintf(stderr, "Info, operating with CA cert(s) in '%s'\n", CAfile);
+ } else
+ fprintf(stderr, "Info, operating without a CA cert(-list)\n");
+ if (!SSL_CTX_set_default_verify_paths(ctx)) {
+ fprintf(stderr, "Error setting default verify paths\n");
+ goto err;
+ }
- /* cert and key */
- if((cert || key) && !ctx_set_cert(ctx, cert, key))
- goto err;
- /* dcert and dkey */
- if((dcert || dkey) && !ctx_set_cert(ctx, dcert, dkey))
- goto err;
- /* temporary RSA key generation */
- if(tmp_rsa)
- SSL_CTX_set_tmp_rsa_callback(ctx, cb_generate_tmp_rsa);
+ /* cert and key */
+ if ((cert || key) && !ctx_set_cert(ctx, cert, key))
+ goto err;
+ /* dcert and dkey */
+ if ((dcert || dkey) && !ctx_set_cert(ctx, dcert, dkey))
+ goto err;
+ /* temporary RSA key generation */
+ if (tmp_rsa)
+ SSL_CTX_set_tmp_rsa_callback(ctx, cb_generate_tmp_rsa);
- /* cipher_list */
- if(cipher_list) {
- if(!SSL_CTX_set_cipher_list(ctx, cipher_list)) {
- fprintf(stderr, "Error setting cipher list '%s'\n",
- cipher_list);
- goto err;
- }
- fprintf(stderr, "Info, set cipher list '%s'\n", cipher_list);
- } else
- fprintf(stderr, "Info, operating with default cipher list\n");
+ /* cipher_list */
+ if (cipher_list) {
+ if (!SSL_CTX_set_cipher_list(ctx, cipher_list)) {
+ fprintf(stderr, "Error setting cipher list '%s'\n", cipher_list);
+ goto err;
+ }
+ fprintf(stderr, "Info, set cipher list '%s'\n", cipher_list);
+ } else
+ fprintf(stderr, "Info, operating with default cipher list\n");
- /* dh_file & dh_special */
- if((dh_file || dh_special) && !ctx_set_dh(ctx, dh_file, dh_special))
- goto err;
+ /* dh_file & dh_special */
+ if ((dh_file || dh_special) && !ctx_set_dh(ctx, dh_file, dh_special))
+ goto err;
- /* ctx_options */
- SSL_CTX_set_options(ctx, ctx_options);
+ /* ctx_options */
+ SSL_CTX_set_options(ctx, ctx_options);
- /* out_state (output of SSL handshake states to screen). */
- if(out_state)
- cb_ssl_info_set_output(stderr);
+ /* out_state (output of SSL handshake states to screen). */
+ if (out_state)
+ cb_ssl_info_set_output(stderr);
- /* out_verify */
- if(out_verify > 0) {
- cb_ssl_verify_set_output(stderr);
- cb_ssl_verify_set_level(out_verify);
- }
+ /* out_verify */
+ if (out_verify > 0) {
+ cb_ssl_verify_set_output(stderr);
+ cb_ssl_verify_set_level(out_verify);
+ }
- /* verify_depth */
- cb_ssl_verify_set_depth(verify_depth);
+ /* verify_depth */
+ cb_ssl_verify_set_depth(verify_depth);
- /* Success! (includes setting verify_mode) */
- SSL_CTX_set_info_callback(ctx, cb_ssl_info);
- SSL_CTX_set_verify(ctx, verify_mode, cb_ssl_verify);
- ret = ctx;
-err:
- if(!ret) {
- ERR_print_errors_fp(stderr);
- if(ctx)
- SSL_CTX_free(ctx);
- }
- return ret;
+ /* Success! (includes setting verify_mode) */
+ SSL_CTX_set_info_callback(ctx, cb_ssl_info);
+ SSL_CTX_set_verify(ctx, verify_mode, cb_ssl_verify);
+ ret = ctx;
+ err:
+ if (!ret) {
+ ERR_print_errors_fp(stderr);
+ if (ctx)
+ SSL_CTX_free(ctx);
+ }
+ return ret;
}
/*****************/
/* Selector bits */
/*****************/
-static void selector_sets_init(select_sets_t *s)
+static void selector_sets_init(select_sets_t * s)
{
- s->max = 0;
- FD_ZERO(&s->reads);
- FD_ZERO(&s->sends);
- FD_ZERO(&s->excepts);
+ s->max = 0;
+ FD_ZERO(&s->reads);
+ FD_ZERO(&s->sends);
+ FD_ZERO(&s->excepts);
}
-static void selector_init(tunala_selector_t *selector)
+
+static void selector_init(tunala_selector_t * selector)
{
- selector_sets_init(&selector->last_selected);
- selector_sets_init(&selector->next_select);
+ selector_sets_init(&selector->last_selected);
+ selector_sets_init(&selector->next_select);
}
#define SEL_EXCEPTS 0x00
#define SEL_READS 0x01
#define SEL_SENDS 0x02
-static void selector_add_raw_fd(tunala_selector_t *s, int fd, int flags)
+static void selector_add_raw_fd(tunala_selector_t * s, int fd, int flags)
{
- FD_SET(fd, &s->next_select.excepts);
- if(flags & SEL_READS)
- FD_SET(fd, &s->next_select.reads);
- if(flags & SEL_SENDS)
- FD_SET(fd, &s->next_select.sends);
- /* Adjust "max" */
- if(s->next_select.max < (fd + 1))
- s->next_select.max = fd + 1;
+ FD_SET(fd, &s->next_select.excepts);
+ if (flags & SEL_READS)
+ FD_SET(fd, &s->next_select.reads);
+ if (flags & SEL_SENDS)
+ FD_SET(fd, &s->next_select.sends);
+ /* Adjust "max" */
+ if (s->next_select.max < (fd + 1))
+ s->next_select.max = fd + 1;
}
-static void selector_add_listener(tunala_selector_t *selector, int fd)
+static void selector_add_listener(tunala_selector_t * selector, int fd)
{
- selector_add_raw_fd(selector, fd, SEL_READS);
+ selector_add_raw_fd(selector, fd, SEL_READS);
}
-static void selector_add_tunala(tunala_selector_t *s, tunala_item_t *t)
+static void selector_add_tunala(tunala_selector_t * s, tunala_item_t * t)
{
- /* Set clean read if sm.clean_in is not full */
- if(t->clean_read != -1) {
- selector_add_raw_fd(s, t->clean_read,
- (buffer_full(state_machine_get_buffer(&t->sm,
- SM_CLEAN_IN)) ? SEL_EXCEPTS : SEL_READS));
- }
- /* Set clean send if sm.clean_out is not empty */
- if(t->clean_send != -1) {
- selector_add_raw_fd(s, t->clean_send,
- (buffer_empty(state_machine_get_buffer(&t->sm,
- SM_CLEAN_OUT)) ? SEL_EXCEPTS : SEL_SENDS));
- }
- /* Set dirty read if sm.dirty_in is not full */
- if(t->dirty_read != -1) {
- selector_add_raw_fd(s, t->dirty_read,
- (buffer_full(state_machine_get_buffer(&t->sm,
- SM_DIRTY_IN)) ? SEL_EXCEPTS : SEL_READS));
- }
- /* Set dirty send if sm.dirty_out is not empty */
- if(t->dirty_send != -1) {
- selector_add_raw_fd(s, t->dirty_send,
- (buffer_empty(state_machine_get_buffer(&t->sm,
- SM_DIRTY_OUT)) ? SEL_EXCEPTS : SEL_SENDS));
- }
+ /* Set clean read if sm.clean_in is not full */
+ if (t->clean_read != -1) {
+ selector_add_raw_fd(s, t->clean_read,
+ (buffer_full(state_machine_get_buffer(&t->sm,
+ SM_CLEAN_IN))
+ ? SEL_EXCEPTS : SEL_READS));
+ }
+ /* Set clean send if sm.clean_out is not empty */
+ if (t->clean_send != -1) {
+ selector_add_raw_fd(s, t->clean_send,
+ (buffer_empty(state_machine_get_buffer(&t->sm,
+ SM_CLEAN_OUT))
+ ? SEL_EXCEPTS : SEL_SENDS));
+ }
+ /* Set dirty read if sm.dirty_in is not full */
+ if (t->dirty_read != -1) {
+ selector_add_raw_fd(s, t->dirty_read,
+ (buffer_full(state_machine_get_buffer(&t->sm,
+ SM_DIRTY_IN))
+ ? SEL_EXCEPTS : SEL_READS));
+ }
+ /* Set dirty send if sm.dirty_out is not empty */
+ if (t->dirty_send != -1) {
+ selector_add_raw_fd(s, t->dirty_send,
+ (buffer_empty(state_machine_get_buffer(&t->sm,
+ SM_DIRTY_OUT))
+ ? SEL_EXCEPTS : SEL_SENDS));
+ }
}
-static int selector_select(tunala_selector_t *selector)
+static int selector_select(tunala_selector_t * selector)
{
- memcpy(&selector->last_selected, &selector->next_select,
- sizeof(select_sets_t));
- selector_sets_init(&selector->next_select);
- return select(selector->last_selected.max,
- &selector->last_selected.reads,
- &selector->last_selected.sends,
- &selector->last_selected.excepts, NULL);
+ memcpy(&selector->last_selected, &selector->next_select,
+ sizeof(select_sets_t));
+ selector_sets_init(&selector->next_select);
+ return select(selector->last_selected.max,
+ &selector->last_selected.reads,
+ &selector->last_selected.sends,
+ &selector->last_selected.excepts, NULL);
}
-/* This returns -1 for error, 0 for no new connections, or 1 for success, in
- * which case *newfd is populated. */
-static int selector_get_listener(tunala_selector_t *selector, int fd, int *newfd)
+/*
+ * This returns -1 for error, 0 for no new connections, or 1 for success, in
+ * which case *newfd is populated.
+ */
+static int selector_get_listener(tunala_selector_t * selector, int fd,
+ int *newfd)
{
- if(FD_ISSET(fd, &selector->last_selected.excepts))
- return -1;
- if(!FD_ISSET(fd, &selector->last_selected.reads))
- return 0;
- if((*newfd = ip_accept_connection(fd)) == -1)
- return -1;
- return 1;
+ if (FD_ISSET(fd, &selector->last_selected.excepts))
+ return -1;
+ if (!FD_ISSET(fd, &selector->last_selected.reads))
+ return 0;
+ if ((*newfd = ip_accept_connection(fd)) == -1)
+ return -1;
+ return 1;
}
/************************/
/* "Tunala" world stuff */
/************************/
-static int tunala_world_make_room(tunala_world_t *world)
+static int tunala_world_make_room(tunala_world_t * world)
{
- unsigned int newsize;
- tunala_item_t *newarray;
+ unsigned int newsize;
+ tunala_item_t *newarray;
- if(world->tunnels_used < world->tunnels_size)
- return 1;
- newsize = (world->tunnels_size == 0 ? 16 :
- ((world->tunnels_size * 3) / 2));
- if((newarray = malloc(newsize * sizeof(tunala_item_t))) == NULL)
- return 0;
- memset(newarray, 0, newsize * sizeof(tunala_item_t));
- if(world->tunnels_used > 0)
- memcpy(newarray, world->tunnels,
- world->tunnels_used * sizeof(tunala_item_t));
- if(world->tunnels_size > 0)
- free(world->tunnels);
- /* migrate */
- world->tunnels = newarray;
- world->tunnels_size = newsize;
- return 1;
+ if (world->tunnels_used < world->tunnels_size)
+ return 1;
+ newsize = (world->tunnels_size == 0 ? 16 :
+ ((world->tunnels_size * 3) / 2));
+ if ((newarray = malloc(newsize * sizeof(tunala_item_t))) == NULL)
+ return 0;
+ memset(newarray, 0, newsize * sizeof(tunala_item_t));
+ if (world->tunnels_used > 0)
+ memcpy(newarray, world->tunnels,
+ world->tunnels_used * sizeof(tunala_item_t));
+ if (world->tunnels_size > 0)
+ free(world->tunnels);
+ /* migrate */
+ world->tunnels = newarray;
+ world->tunnels_size = newsize;
+ return 1;
}
-static int tunala_world_new_item(tunala_world_t *world, int fd,
- const char *ip, unsigned short port, int flipped)
+static int tunala_world_new_item(tunala_world_t * world, int fd,
+ const char *ip, unsigned short port,
+ int flipped)
{
- tunala_item_t *item;
- int newfd;
- SSL *new_ssl = NULL;
+ tunala_item_t *item;
+ int newfd;
+ SSL *new_ssl = NULL;
- if(!tunala_world_make_room(world))
- return 0;
- if((new_ssl = SSL_new(world->ssl_ctx)) == NULL) {
- fprintf(stderr, "Error creating new SSL\n");
- ERR_print_errors_fp(stderr);
- return 0;
- }
- item = world->tunnels + (world->tunnels_used++);
- state_machine_init(&item->sm);
- item->clean_read = item->clean_send =
- item->dirty_read = item->dirty_send = -1;
- if((newfd = ip_create_connection_split(ip, port)) == -1)
- goto err;
- /* Which way round? If we're a server, "fd" is the dirty side and the
- * connection we open is the clean one. For a client, it's the other way
- * around. Unless, of course, we're "flipped" in which case everything
- * gets reversed. :-) */
- if((world->server_mode && !flipped) ||
- (!world->server_mode && flipped)) {
- item->dirty_read = item->dirty_send = fd;
- item->clean_read = item->clean_send = newfd;
- } else {
- item->clean_read = item->clean_send = fd;
- item->dirty_read = item->dirty_send = newfd;
- }
- /* We use the SSL's "app_data" to indicate a call-back induced "kill" */
- SSL_set_app_data(new_ssl, NULL);
- if(!state_machine_set_SSL(&item->sm, new_ssl, world->server_mode))
- goto err;
- return 1;
-err:
- tunala_world_del_item(world, world->tunnels_used - 1);
- return 0;
+ if (!tunala_world_make_room(world))
+ return 0;
+ if ((new_ssl = SSL_new(world->ssl_ctx)) == NULL) {
+ fprintf(stderr, "Error creating new SSL\n");
+ ERR_print_errors_fp(stderr);
+ return 0;
+ }
+ item = world->tunnels + (world->tunnels_used++);
+ state_machine_init(&item->sm);
+ item->clean_read = item->clean_send =
+ item->dirty_read = item->dirty_send = -1;
+ if ((newfd = ip_create_connection_split(ip, port)) == -1)
+ goto err;
+ /*
+ * Which way round? If we're a server, "fd" is the dirty side and the
+ * connection we open is the clean one. For a client, it's the other way
+ * around. Unless, of course, we're "flipped" in which case everything
+ * gets reversed. :-)
+ */
+ if ((world->server_mode && !flipped) || (!world->server_mode && flipped)) {
+ item->dirty_read = item->dirty_send = fd;
+ item->clean_read = item->clean_send = newfd;
+ } else {
+ item->clean_read = item->clean_send = fd;
+ item->dirty_read = item->dirty_send = newfd;
+ }
+ /*
+ * We use the SSL's "app_data" to indicate a call-back induced "kill"
+ */
+ SSL_set_app_data(new_ssl, NULL);
+ if (!state_machine_set_SSL(&item->sm, new_ssl, world->server_mode))
+ goto err;
+ return 1;
+ err:
+ tunala_world_del_item(world, world->tunnels_used - 1);
+ return 0;
}
-static void tunala_world_del_item(tunala_world_t *world, unsigned int idx)
+static void tunala_world_del_item(tunala_world_t * world, unsigned int idx)
{
- tunala_item_t *item = world->tunnels + idx;
- if(item->clean_read != -1)
- close(item->clean_read);
- if(item->clean_send != item->clean_read)
- close(item->clean_send);
- item->clean_read = item->clean_send = -1;
- if(item->dirty_read != -1)
- close(item->dirty_read);
- if(item->dirty_send != item->dirty_read)
- close(item->dirty_send);
- item->dirty_read = item->dirty_send = -1;
- state_machine_close(&item->sm);
- /* OK, now we fix the item array */
- if(idx + 1 < world->tunnels_used)
- /* We need to scroll entries to the left */
- memmove(world->tunnels + idx,
- world->tunnels + (idx + 1),
- (world->tunnels_used - (idx + 1)) *
- sizeof(tunala_item_t));
- world->tunnels_used--;
+ tunala_item_t *item = world->tunnels + idx;
+ if (item->clean_read != -1)
+ close(item->clean_read);
+ if (item->clean_send != item->clean_read)
+ close(item->clean_send);
+ item->clean_read = item->clean_send = -1;
+ if (item->dirty_read != -1)
+ close(item->dirty_read);
+ if (item->dirty_send != item->dirty_read)
+ close(item->dirty_send);
+ item->dirty_read = item->dirty_send = -1;
+ state_machine_close(&item->sm);
+ /* OK, now we fix the item array */
+ if (idx + 1 < world->tunnels_used)
+ /* We need to scroll entries to the left */
+ memmove(world->tunnels + idx,
+ world->tunnels + (idx + 1),
+ (world->tunnels_used - (idx + 1)) * sizeof(tunala_item_t));
+ world->tunnels_used--;
}
-static int tunala_item_io(tunala_selector_t *selector, tunala_item_t *item)
+static int tunala_item_io(tunala_selector_t * selector, tunala_item_t * item)
{
- int c_r, c_s, d_r, d_s; /* Four boolean flags */
+ int c_r, c_s, d_r, d_s; /* Four boolean flags */
- /* Take ourselves out of the gene-pool if there was an except */
- if((item->clean_read != -1) && FD_ISSET(item->clean_read,
- &selector->last_selected.excepts))
- return 0;
- if((item->clean_send != -1) && FD_ISSET(item->clean_send,
- &selector->last_selected.excepts))
- return 0;
- if((item->dirty_read != -1) && FD_ISSET(item->dirty_read,
- &selector->last_selected.excepts))
- return 0;
- if((item->dirty_send != -1) && FD_ISSET(item->dirty_send,
- &selector->last_selected.excepts))
- return 0;
- /* Grab our 4 IO flags */
- c_r = c_s = d_r = d_s = 0;
- if(item->clean_read != -1)
- c_r = FD_ISSET(item->clean_read, &selector->last_selected.reads);
- if(item->clean_send != -1)
- c_s = FD_ISSET(item->clean_send, &selector->last_selected.sends);
- if(item->dirty_read != -1)
- d_r = FD_ISSET(item->dirty_read, &selector->last_selected.reads);
- if(item->dirty_send != -1)
- d_s = FD_ISSET(item->dirty_send, &selector->last_selected.sends);
- /* If no IO has happened for us, skip needless data looping */
- if(!c_r && !c_s && !d_r && !d_s)
- return 1;
- if(c_r)
- c_r = (buffer_from_fd(state_machine_get_buffer(&item->sm,
- SM_CLEAN_IN), item->clean_read) <= 0);
- if(c_s)
- c_s = (buffer_to_fd(state_machine_get_buffer(&item->sm,
- SM_CLEAN_OUT), item->clean_send) <= 0);
- if(d_r)
- d_r = (buffer_from_fd(state_machine_get_buffer(&item->sm,
- SM_DIRTY_IN), item->dirty_read) <= 0);
- if(d_s)
- d_s = (buffer_to_fd(state_machine_get_buffer(&item->sm,
- SM_DIRTY_OUT), item->dirty_send) <= 0);
- /* If any of the flags is non-zero, that means they need closing */
- if(c_r) {
- close(item->clean_read);
- if(item->clean_send == item->clean_read)
- item->clean_send = -1;
- item->clean_read = -1;
- }
- if(c_s && (item->clean_send != -1)) {
- close(item->clean_send);
- if(item->clean_send == item->clean_read)
- item->clean_read = -1;
- item->clean_send = -1;
- }
- if(d_r) {
- close(item->dirty_read);
- if(item->dirty_send == item->dirty_read)
- item->dirty_send = -1;
- item->dirty_read = -1;
- }
- if(d_s && (item->dirty_send != -1)) {
- close(item->dirty_send);
- if(item->dirty_send == item->dirty_read)
- item->dirty_read = -1;
- item->dirty_send = -1;
- }
- /* This function name is attributed to the term donated by David
- * Schwartz on openssl-dev, message-ID:
- * <NCBBLIEPOCNJOAEKBEAKEEDGLIAA.davids@webmaster.com>. :-) */
- if(!state_machine_churn(&item->sm))
- /* If the SSL closes, it will also zero-out the _in buffers
- * and will in future process just outgoing data. As and
- * when the outgoing data has gone, it will return zero
- * here to tell us to bail out. */
- return 0;
- /* Otherwise, we return zero if both sides are dead. */
- if(((item->clean_read == -1) || (item->clean_send == -1)) &&
- ((item->dirty_read == -1) || (item->dirty_send == -1)))
- return 0;
- /* If only one side closed, notify the SSL of this so it can take
- * appropriate action. */
- if((item->clean_read == -1) || (item->clean_send == -1)) {
- if(!state_machine_close_clean(&item->sm))
- return 0;
- }
- if((item->dirty_read == -1) || (item->dirty_send == -1)) {
- if(!state_machine_close_dirty(&item->sm))
- return 0;
- }
- return 1;
+ /* Take ourselves out of the gene-pool if there was an except */
+ if ((item->clean_read != -1) && FD_ISSET(item->clean_read,
+ &selector->
+ last_selected.excepts))
+ return 0;
+ if ((item->clean_send != -1) && FD_ISSET(item->clean_send,
+ &selector->
+ last_selected.excepts))
+ return 0;
+ if ((item->dirty_read != -1) && FD_ISSET(item->dirty_read,
+ &selector->
+ last_selected.excepts))
+ return 0;
+ if ((item->dirty_send != -1) && FD_ISSET(item->dirty_send,
+ &selector->
+ last_selected.excepts))
+ return 0;
+ /* Grab our 4 IO flags */
+ c_r = c_s = d_r = d_s = 0;
+ if (item->clean_read != -1)
+ c_r = FD_ISSET(item->clean_read, &selector->last_selected.reads);
+ if (item->clean_send != -1)
+ c_s = FD_ISSET(item->clean_send, &selector->last_selected.sends);
+ if (item->dirty_read != -1)
+ d_r = FD_ISSET(item->dirty_read, &selector->last_selected.reads);
+ if (item->dirty_send != -1)
+ d_s = FD_ISSET(item->dirty_send, &selector->last_selected.sends);
+ /* If no IO has happened for us, skip needless data looping */
+ if (!c_r && !c_s && !d_r && !d_s)
+ return 1;
+ if (c_r)
+ c_r = (buffer_from_fd(state_machine_get_buffer(&item->sm,
+ SM_CLEAN_IN),
+ item->clean_read) <= 0);
+ if (c_s)
+ c_s = (buffer_to_fd(state_machine_get_buffer(&item->sm,
+ SM_CLEAN_OUT),
+ item->clean_send) <= 0);
+ if (d_r)
+ d_r = (buffer_from_fd(state_machine_get_buffer(&item->sm,
+ SM_DIRTY_IN),
+ item->dirty_read) <= 0);
+ if (d_s)
+ d_s = (buffer_to_fd(state_machine_get_buffer(&item->sm,
+ SM_DIRTY_OUT),
+ item->dirty_send) <= 0);
+ /* If any of the flags is non-zero, that means they need closing */
+ if (c_r) {
+ close(item->clean_read);
+ if (item->clean_send == item->clean_read)
+ item->clean_send = -1;
+ item->clean_read = -1;
+ }
+ if (c_s && (item->clean_send != -1)) {
+ close(item->clean_send);
+ if (item->clean_send == item->clean_read)
+ item->clean_read = -1;
+ item->clean_send = -1;
+ }
+ if (d_r) {
+ close(item->dirty_read);
+ if (item->dirty_send == item->dirty_read)
+ item->dirty_send = -1;
+ item->dirty_read = -1;
+ }
+ if (d_s && (item->dirty_send != -1)) {
+ close(item->dirty_send);
+ if (item->dirty_send == item->dirty_read)
+ item->dirty_read = -1;
+ item->dirty_send = -1;
+ }
+ /*
+ * This function name is attributed to the term donated by David Schwartz
+ * on openssl-dev, message-ID:
+ * <NCBBLIEPOCbmasEKBEAKEEDGLIAA.davids@webmaster.com>. :-)
+ */
+ if (!state_machine_churn(&item->sm))
+ /*
+ * If the SSL closes, it will also zero-out the _in buffers and will
+ * in future process just outgoing data. As and when the outgoing
+ * data has gone, it will return zero here to tell us to bail out.
+ */
+ return 0;
+ /* Otherwise, we return zero if both sides are dead. */
+ if (((item->clean_read == -1) || (item->clean_send == -1)) &&
+ ((item->dirty_read == -1) || (item->dirty_send == -1)))
+ return 0;
+ /*
+ * If only one side closed, notify the SSL of this so it can take
+ * appropriate action.
+ */
+ if ((item->clean_read == -1) || (item->clean_send == -1)) {
+ if (!state_machine_close_clean(&item->sm))
+ return 0;
+ }
+ if ((item->dirty_read == -1) || (item->dirty_send == -1)) {
+ if (!state_machine_close_dirty(&item->sm))
+ return 0;
+ }
+ return 1;
}
-
projects / thirdparty / openssl.git / blobdiff