Provide Cryptographic Signature capability. More...

#include "asterisk.h"
#include "asterisk/paths.h"
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <dirent.h>
#include "asterisk/module.h"
#include "asterisk/crypto.h"
#include "asterisk/md5.h"
#include "asterisk/cli.h"
#include "asterisk/io.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"

Include dependency graph for res_crypto.c:

Go to the source code of this file.

Data Structures
struct	ast_key
struct	keys
Defines
#define	FORMAT "%-18s %-8s %-16s %-33s\n"
#define	KEY_NEEDS_PASSCODE (1 << 16)
Functions
static int	__ast_check_signature (struct ast_key key, const char msg, const char *sig)
	base64 decode then sent to __ast_check_signature_bin
static int	__ast_check_signature_bin (struct ast_key key, const char msg, int msglen, const unsigned char *dsig)
	check signature of a message
static int	__ast_decrypt_bin (unsigned char dst, const unsigned char src, int srclen, struct ast_key *key)
	decrypt a message
static int	__ast_encrypt_bin (unsigned char dst, const unsigned char src, int srclen, struct ast_key *key)
	encrypt a message
static struct ast_key *	__ast_key_get (const char *kname, int ktype)
	return the ast_key structure for name
static int	__ast_sign (struct ast_key key, char msg, char *sig)
	wrapper for __ast_sign_bin then base64 encode it
static int	__ast_sign_bin (struct ast_key key, const char msg, int msglen, unsigned char *dsig)
	signs outgoing message with public key
static void	__fini_keys (void)
static void	__init_keys (void)
static void	__reg_module (void)
static void	__unreg_module (void)
static int	crypto_init (void)
	initialise the res_crypto module
static void	crypto_load (int ifd, int ofd)
	refresh RSA keys from file
static char *	handle_cli_keys_init (struct ast_cli_entry e, int cmd, struct ast_cli_args a)
	initialize all RSA keys
static char *	handle_cli_keys_show (struct ast_cli_entry e, int cmd, struct ast_cli_args a)
	show the list of RSA keys
static int	load_module (void)
static void	md52sum (char sum, unsigned char md5)
static int	pw_cb (char buf, int size, int rwflag, void userdata)
	setting of priv key
static int	reload (void)
static struct ast_key *	try_load_key (const char dir, const char fname, int ifd, int ofd, int *not2)
	load RSA key from file
static int	unload_module (void)
Variables
static struct ast_module_info __MODULE_INFO_SECTION	__mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Cryptographic Digital Signatures" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .reload = reload }
static struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_cli_entry	cli_crypto []
static struct keys	keys

Detailed Description

Provide Cryptographic Signature capability.

Author:: Mark Spencer <markster@digium.com>

ExtRef:: Uses the OpenSSL library, available at http://www.openssl.org/

Definition in file res_crypto.c.

Define Documentation

#define FORMAT "%-18s %-8s %-16s %-33s\n"

#define KEY_NEEDS_PASSCODE (1 << 16)

Definition at line 63 of file res_crypto.c.

Referenced by handle_cli_keys_init(), handle_cli_keys_show(), and try_load_key().

Function Documentation

static int __ast_check_signature	(	struct ast_key *	key,
		const char *	msg,
		const char *	sig
	)		`[static]`

base64 decode then sent to __ast_check_signature_bin

See also:: ast_check_signature

Definition at line 421 of file res_crypto.c.

References ast_base64decode(), ast_check_signature_bin, ast_log(), and LOG_WARNING.

Referenced by crypto_init().

{
   unsigned char dsig[128];
   int res;

   /* Decode signature */
   if ((res = ast_base64decode(dsig, sig, sizeof(dsig))) != sizeof(dsig)) {
      ast_log(LOG_WARNING, "Signature improper length (expect %d, got %d)\n", (int)sizeof(dsig), (int)res);
      return -1;
   }

   res = ast_check_signature_bin(key, msg, strlen(msg), dsig);

   return res;
}

static int __ast_check_signature_bin	(	struct ast_key *	key,
		const char *	msg,
		int	msglen,
		const unsigned char *	dsig
	)		`[static]`

check signature of a message

See also:: ast_check_signature_bin

Definition at line 392 of file res_crypto.c.

References ast_debug, AST_KEY_PUBLIC, ast_log(), ast_key::digest, ast_key::ktype, LOG_WARNING, ast_key::name, and ast_key::rsa.

Referenced by crypto_init().

{
   unsigned char digest[20];
   int res;

   if (key->ktype != AST_KEY_PUBLIC) {
      /* Okay, so of course you really *can* but for our purposes
         we're going to say you can't */
      ast_log(LOG_WARNING, "Cannot check message signature with a private key\n");
      return -1;
   }

   /* Calculate digest of message */
   SHA1((unsigned char *)msg, msglen, digest);

   /* Verify signature */
   if (!(res = RSA_verify(NID_sha1, digest, sizeof(digest), (unsigned char *)dsig, 128, key->rsa))) {
      ast_debug(1, "Key failed verification: %s\n", key->name);
      return -1;
   }

   /* Pass */
   return 0;
}

static int __ast_decrypt_bin	(	unsigned char *	dst,
		const unsigned char *	src,
		int	srclen,
		struct ast_key *	key
	)		`[static]`

decrypt a message

See also:: ast_decrypt_bin

Definition at line 315 of file res_crypto.c.

References AST_KEY_PRIVATE, ast_log(), ast_key::ktype, LOG_NOTICE, LOG_WARNING, and ast_key::rsa.

Referenced by crypto_init().

{
   int res, pos = 0;

   if (key->ktype != AST_KEY_PRIVATE) {
      ast_log(LOG_WARNING, "Cannot decrypt with a public key\n");
      return -1;
   }

   if (srclen % 128) {
      ast_log(LOG_NOTICE, "Tried to decrypt something not a multiple of 128 bytes\n");
      return -1;
   }

   while(srclen) {
      /* Process chunks 128 bytes at a time */
      if ((res = RSA_private_decrypt(128, src, dst, key->rsa, RSA_PKCS1_OAEP_PADDING)) < 0)
         return -1;
      pos += res;
      src += 128;
      srclen -= 128;
      dst += res;
   }

   return pos;
}

static int __ast_encrypt_bin	(	unsigned char *	dst,
		const unsigned char *	src,
		int	srclen,
		struct ast_key *	key
	)		`[static]`

encrypt a message

See also:: ast_encrypt_bin

Definition at line 346 of file res_crypto.c.

References AST_KEY_PUBLIC, ast_log(), ast_key::ktype, LOG_NOTICE, LOG_WARNING, and ast_key::rsa.

Referenced by crypto_init().

{
   int res, bytes, pos = 0;

   if (key->ktype != AST_KEY_PUBLIC) {
      ast_log(LOG_WARNING, "Cannot encrypt with a private key\n");
      return -1;
   }
   
   while(srclen) {
      bytes = srclen;
      if (bytes > 128 - 41)
         bytes = 128 - 41;
      /* Process chunks 128-41 bytes at a time */
      if ((res = RSA_public_encrypt(bytes, src, dst, key->rsa, RSA_PKCS1_OAEP_PADDING)) != 128) {
         ast_log(LOG_NOTICE, "How odd, encrypted size is %d\n", res);
         return -1;
      }
      src += bytes;
      srclen -= bytes;
      pos += res;
      dst += res;
   }
   return pos;
}

static struct ast_key* __ast_key_get	(	const char *	kname,
		int	ktype
	)		`[static, read]`

return the ast_key structure for name

See also:: ast_key_get

Definition at line 128 of file res_crypto.c.

References AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_key::ktype, and ast_key::name.

Referenced by crypto_init().

{
   struct ast_key *key;

   AST_RWLIST_RDLOCK(&keys);
   AST_RWLIST_TRAVERSE(&keys, key, list) {
      if (!strcmp(kname, key->name) &&
          (ktype == key->ktype))
         break;
   }
   AST_RWLIST_UNLOCK(&keys);

   return key;
}

static int __ast_sign	(	struct ast_key *	key,
		char *	msg,
		char *	sig
	)		`[static]`

wrapper for __ast_sign_bin then base64 encode it

See also:: ast_sign

Definition at line 376 of file res_crypto.c.

References ast_base64encode(), and ast_sign_bin.

Referenced by crypto_init().

{
   unsigned char dsig[128];
   int siglen = sizeof(dsig), res;

   if (!(res = ast_sign_bin(key, msg, strlen(msg), dsig)))
      /* Success -- encode (256 bytes max as documented) */
      ast_base64encode(sig, dsig, siglen, 256);

   return res;
}

static int __ast_sign_bin	(	struct ast_key *	key,
		const char *	msg,
		int	msglen,
		unsigned char *	dsig
	)		`[static]`

signs outgoing message with public key

See also:: ast_sign_bin

Definition at line 282 of file res_crypto.c.

References AST_KEY_PRIVATE, ast_log(), ast_key::digest, ast_key::ktype, LOG_WARNING, ast_key::name, and ast_key::rsa.

Referenced by crypto_init().

{
   unsigned char digest[20];
   unsigned int siglen = 128;
   int res;

   if (key->ktype != AST_KEY_PRIVATE) {
      ast_log(LOG_WARNING, "Cannot sign with a public key\n");
      return -1;
   }

   /* Calculate digest of message */
   SHA1((unsigned char *)msg, msglen, digest);

   /* Verify signature */
   if (!(res = RSA_sign(NID_sha1, digest, sizeof(digest), dsig, &siglen, key->rsa))) {
      ast_log(LOG_WARNING, "RSA Signature (key %s) failed\n", key->name);
      return -1;
   }

   if (siglen != 128) {
      ast_log(LOG_WARNING, "Unexpected signature length %d, expecting %d\n", (int)siglen, (int)128);
      return -1;
   }

   return 0;
   
}

static void __fini_keys ( void ) [static]

Definition at line 85 of file res_crypto.c.

static void __init_keys ( void ) [static]

Definition at line 85 of file res_crypto.c.

static void __reg_module ( void ) [static]

Definition at line 628 of file res_crypto.c.

static void __unreg_module ( void ) [static]

Definition at line 628 of file res_crypto.c.

static int crypto_init ( void ) [static]

initialise the res_crypto module

Definition at line 586 of file res_crypto.c.

References __ast_check_signature(), __ast_check_signature_bin(), __ast_decrypt_bin(), __ast_encrypt_bin(), __ast_key_get(), __ast_sign(), __ast_sign_bin(), ARRAY_LEN, ast_check_signature, ast_check_signature_bin, ast_cli_register_multiple(), ast_decrypt_bin, ast_encrypt_bin, ast_key_get, ast_sign, ast_sign_bin, and cli_crypto.

Referenced by load_module().

{
   ast_cli_register_multiple(cli_crypto, ARRAY_LEN(cli_crypto));

   /* Install ourselves into stubs */
   ast_key_get = __ast_key_get;
   ast_check_signature = __ast_check_signature;
   ast_check_signature_bin = __ast_check_signature_bin;
   ast_sign = __ast_sign;
   ast_sign_bin = __ast_sign_bin;
   ast_encrypt_bin = __ast_encrypt_bin;
   ast_decrypt_bin = __ast_decrypt_bin;
   return 0;
}

static void crypto_load	(	int	ifd,
		int	ofd
	)		`[static]`

refresh RSA keys from file

Parameters:

ifd	file descriptor
ofd	file descriptor

Returns:: void

Definition at line 443 of file res_crypto.c.

References ast_config_AST_KEY_DIR, ast_debug, ast_free, ast_log(), AST_RWLIST_REMOVE_CURRENT, AST_RWLIST_TRAVERSE, AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_key::delme, dir, ast_key::ktype, LOG_NOTICE, LOG_WARNING, ast_key::name, ast_key::rsa, and try_load_key().

Referenced by load_module(), and reload().

{
   struct ast_key *key;
   DIR *dir = NULL;
   struct dirent *ent;
   int note = 0;

   AST_RWLIST_WRLOCK(&keys);

   /* Mark all keys for deletion */
   AST_RWLIST_TRAVERSE(&keys, key, list) {
      key->delme = 1;
   }

   /* Load new keys */
   if ((dir = opendir(ast_config_AST_KEY_DIR))) {
      while((ent = readdir(dir))) {
         try_load_key(ast_config_AST_KEY_DIR, ent->d_name, ifd, ofd, &note);
      }
      closedir(dir);
   } else
      ast_log(LOG_WARNING, "Unable to open key directory '%s'\n", ast_config_AST_KEY_DIR);

   if (note)
      ast_log(LOG_NOTICE, "Please run the command 'init keys' to enter the passcodes for the keys\n");

   /* Delete any keys that are no longer present */
   AST_RWLIST_TRAVERSE_SAFE_BEGIN(&keys, key, list) {
      if (key->delme) {
         ast_debug(1, "Deleting key %s type %d\n", key->name, key->ktype);
         AST_RWLIST_REMOVE_CURRENT(list);
         if (key->rsa)
            RSA_free(key->rsa);
         ast_free(key);
      }
   }
   AST_RWLIST_TRAVERSE_SAFE_END;

   AST_RWLIST_UNLOCK(&keys);
}

static char* handle_cli_keys_init	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)		`[static]`

initialize all RSA keys

Parameters:

e	CLI command
cmd
a	list of CLI arguments

Returns:: CLI_SUCCESS

Definition at line 544 of file res_crypto.c.

References ast_cli_args::argc, ast_config_AST_KEY_DIR, ast_copy_string(), AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, ast_key::fn, KEY_NEEDS_PASSCODE, ast_key::ktype, try_load_key(), and ast_cli_entry::usage.

{
   struct ast_key *key;
   int ign;
   char *kn, tmp[256] = "";

   switch (cmd) {
   case CLI_INIT:
      e->command = "keys init";
      e->usage =
         "Usage: keys init\n"
         "       Initializes private keys (by reading in pass code from\n"
         "       the user)\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   if (a->argc != 2)
      return CLI_SHOWUSAGE;

   AST_RWLIST_WRLOCK(&keys);
   AST_RWLIST_TRAVERSE_SAFE_BEGIN(&keys, key, list) {
      /* Reload keys that need pass codes now */
      if (key->ktype & KEY_NEEDS_PASSCODE) {
         kn = key->fn + strlen(ast_config_AST_KEY_DIR) + 1;
         ast_copy_string(tmp, kn, sizeof(tmp));
         try_load_key(ast_config_AST_KEY_DIR, tmp, a->fd, a->fd, &ign);
      }
   }
   AST_RWLIST_TRAVERSE_SAFE_END
   AST_RWLIST_UNLOCK(&keys);

   return CLI_SUCCESS;
}

static char* handle_cli_keys_show	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)		`[static]`

show the list of RSA keys

Parameters:

e	CLI command
cmd
a	list of CLI arguments

Returns:: CLI_SUCCESS

Definition at line 498 of file res_crypto.c.

References ast_cli(), AST_KEY_PUBLIC, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, CLI_GENERATE, CLI_INIT, CLI_SUCCESS, ast_cli_entry::command, ast_key::digest, ast_cli_args::fd, FORMAT, KEY_NEEDS_PASSCODE, ast_key::ktype, md52sum(), ast_key::name, and ast_cli_entry::usage.

{
#define FORMAT "%-18s %-8s %-16s %-33s\n"

   struct ast_key *key;
   char sum[16 * 2 + 1];
   int count_keys = 0;

   switch (cmd) {
   case CLI_INIT:
      e->command = "keys show";
      e->usage =
         "Usage: keys show\n"
         "       Displays information about RSA keys known by Asterisk\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   ast_cli(a->fd, FORMAT, "Key Name", "Type", "Status", "Sum");
   ast_cli(a->fd, FORMAT, "------------------", "--------", "----------------", "--------------------------------");

   AST_RWLIST_RDLOCK(&keys);
   AST_RWLIST_TRAVERSE(&keys, key, list) {
      md52sum(sum, key->digest);
      ast_cli(a->fd, FORMAT, key->name, 
         (key->ktype & 0xf) == AST_KEY_PUBLIC ? "PUBLIC" : "PRIVATE",
         key->ktype & KEY_NEEDS_PASSCODE ? "[Needs Passcode]" : "[Loaded]", sum);
      count_keys++;
   }
   AST_RWLIST_UNLOCK(&keys);

   ast_cli(a->fd, "\n%d known RSA keys.\n", count_keys);

   return CLI_SUCCESS;

#undef FORMAT
}

static int load_module ( void ) [static]

Definition at line 607 of file res_crypto.c.

References AST_MODULE_LOAD_SUCCESS, ast_opt_init_keys, crypto_init(), and crypto_load().

{
   crypto_init();
   if (ast_opt_init_keys)
      crypto_load(STDIN_FILENO, STDOUT_FILENO);
   else
      crypto_load(-1, -1);
   return AST_MODULE_LOAD_SUCCESS;
}

static void md52sum	(	char *	sum,
		unsigned char *	md5
	)		`[static]`

Definition at line 484 of file res_crypto.c.

Referenced by handle_cli_keys_show().

{
   int x;
   for (x = 0; x < 16; x++) 
      sum += sprintf(sum, "%02x", *(md5++));
}

static int pw_cb	(	char *	buf,
		int	size,
		int	rwflag,
		void *	userdata
	)		`[static]`

setting of priv key

Parameters:

buf
size
rwflag
userdata

Returns:: length of string,-1 on failure

Definition at line 95 of file res_crypto.c.

References ast_hide_password(), AST_KEY_PRIVATE, ast_log(), ast_restore_tty(), errno, ast_key::infd, ast_key::ktype, LOG_WARNING, ast_key::name, ast_key::outfd, and prompt.

Referenced by try_load_key().

{
   struct ast_key *key = (struct ast_key *)userdata;
   char prompt[256];
   int res, tmp;

   if (key->infd < 0) {
      /* Note that we were at least called */
      key->infd = -2;
      return -1;
   }
   
   snprintf(prompt, sizeof(prompt), ">>>> passcode for %s key '%s': ",
       key->ktype == AST_KEY_PRIVATE ? "PRIVATE" : "PUBLIC", key->name);
   if (write(key->outfd, prompt, strlen(prompt)) < 0) {
      ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
      key->infd = -2;
      return -1;
   }
   memset(buf, 0, sizeof(buf));
   tmp = ast_hide_password(key->infd);
   memset(buf, 0, size);
   res = read(key->infd, buf, size);
   ast_restore_tty(key->infd, tmp);
   if (buf[strlen(buf) -1] == '\n')
      buf[strlen(buf) - 1] = '\0';
   return strlen(buf);
}

static int reload ( void ) [static]

Definition at line 601 of file res_crypto.c.

References crypto_load().

{
   crypto_load(-1, -1);
   return 0;
}

static struct ast_key* try_load_key	(	const char *	dir,
		const char *	fname,
		int	ifd,
		int	ofd,
		int *	not2
	)		`[static, read]`

load RSA key from file

Parameters:

dir	directory string
fname	name of file
ifd	incoming file descriptor
ofd	outgoing file descriptor
not2

Return values:

key	on success.
NULL	on failure.

Definition at line 153 of file res_crypto.c.

References ast_calloc, ast_copy_string(), ast_debug, AST_KEY_PRIVATE, AST_KEY_PUBLIC, ast_log(), ast_opt_init_keys, AST_RWLIST_INSERT_TAIL, AST_RWLIST_TRAVERSE, ast_verb, buf, ast_key::delme, ast_key::digest, errno, f, ast_key::fn, ast_key::infd, KEY_NEEDS_PASSCODE, ast_key::ktype, LOG_NOTICE, LOG_WARNING, MD5Final(), MD5Init(), MD5Update(), ast_key::name, ast_key::outfd, pw_cb(), and ast_key::rsa.

Referenced by crypto_load(), and handle_cli_keys_init().

{
   int ktype = 0, found = 0;
   char *c = NULL, ffname[256];
   unsigned char digest[16];
   FILE *f;
   struct MD5Context md5;
   struct ast_key *key;
   static int notice = 0;

   /* Make sure its name is a public or private key */
   if ((c = strstr(fname, ".pub")) && !strcmp(c, ".pub"))
      ktype = AST_KEY_PUBLIC;
   else if ((c = strstr(fname, ".key")) && !strcmp(c, ".key"))
      ktype = AST_KEY_PRIVATE;
   else
      return NULL;

   /* Get actual filename */
   snprintf(ffname, sizeof(ffname), "%s/%s", dir, fname);

   /* Open file */
   if (!(f = fopen(ffname, "r"))) {
      ast_log(LOG_WARNING, "Unable to open key file %s: %s\n", ffname, strerror(errno));
      return NULL;
   }

   MD5Init(&md5);
   while(!feof(f)) {
      /* Calculate a "whatever" quality md5sum of the key */
      char buf[256] = "";
      if (!fgets(buf, sizeof(buf), f)) {
         continue;
      }
      if (!feof(f))
         MD5Update(&md5, (unsigned char *) buf, strlen(buf));
   }
   MD5Final(digest, &md5);

   /* Look for an existing key */
   AST_RWLIST_TRAVERSE(&keys, key, list) {
      if (!strcasecmp(key->fn, ffname))
         break;
   }

   if (key) {
      /* If the MD5 sum is the same, and it isn't awaiting a passcode 
         then this is far enough */
      if (!memcmp(digest, key->digest, 16) &&
          !(key->ktype & KEY_NEEDS_PASSCODE)) {
         fclose(f);
         key->delme = 0;
         return NULL;
      } else {
         /* Preserve keytype */
         ktype = key->ktype;
         /* Recycle the same structure */
         found++;
      }
   }

   /* Make fname just be the normal name now */
   *c = '\0';
   if (!key) {
      if (!(key = ast_calloc(1, sizeof(*key)))) {
         fclose(f);
         return NULL;
      }
   }
   /* First the filename */
   ast_copy_string(key->fn, ffname, sizeof(key->fn));
   /* Then the name */
   ast_copy_string(key->name, fname, sizeof(key->name));
   key->ktype = ktype;
   /* Yes, assume we're going to be deleted */
   key->delme = 1;
   /* Keep the key type */
   memcpy(key->digest, digest, 16);
   /* Can I/O takes the FD we're given */
   key->infd = ifd;
   key->outfd = ofd;
   /* Reset the file back to the beginning */
   rewind(f);
   /* Now load the key with the right method */
   if (ktype == AST_KEY_PUBLIC)
      key->rsa = PEM_read_RSA_PUBKEY(f, NULL, pw_cb, key);
   else
      key->rsa = PEM_read_RSAPrivateKey(f, NULL, pw_cb, key);
   fclose(f);
   if (key->rsa) {
      if (RSA_size(key->rsa) == 128) {
         /* Key loaded okay */
         key->ktype &= ~KEY_NEEDS_PASSCODE;
         ast_verb(3, "Loaded %s key '%s'\n", key->ktype == AST_KEY_PUBLIC ? "PUBLIC" : "PRIVATE", key->name);
         ast_debug(1, "Key '%s' loaded OK\n", key->name);
         key->delme = 0;
      } else
         ast_log(LOG_NOTICE, "Key '%s' is not expected size.\n", key->name);
   } else if (key->infd != -2) {
      ast_log(LOG_WARNING, "Key load %s '%s' failed\n",key->ktype == AST_KEY_PUBLIC ? "PUBLIC" : "PRIVATE", key->name);
      if (ofd > -1)
         ERR_print_errors_fp(stderr);
      else
         ERR_print_errors_fp(stderr);
   } else {
      ast_log(LOG_NOTICE, "Key '%s' needs passcode.\n", key->name);
      key->ktype |= KEY_NEEDS_PASSCODE;
      if (!notice) {
         if (!ast_opt_init_keys) 
            ast_log(LOG_NOTICE, "Add the '-i' flag to the asterisk command line if you want to automatically initialize passcodes at launch.\n");
         notice++;
      }
      /* Keep it anyway */
      key->delme = 0;
      /* Print final notice about "init keys" when done */
      *not2 = 1;
   }

   /* If this is a new key add it to the list */
   if (!found)
      AST_RWLIST_INSERT_TAIL(&keys, key, list);

   return key;
}

static int unload_module ( void ) [static]

Definition at line 617 of file res_crypto.c.

{
   /* Can't unload this once we're loaded */
   return -1;
}

Variable Documentation

struct ast_module_info __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Cryptographic Digital Signatures" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .reload = reload } [static]

Definition at line 628 of file res_crypto.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 628 of file res_crypto.c.

struct ast_cli_entry cli_crypto[] [static]

Initial value:

 {
   AST_CLI_DEFINE(handle_cli_keys_show, "Displays RSA key information"),
   AST_CLI_DEFINE(handle_cli_keys_init, "Initialize RSA key passcodes")
}

Definition at line 580 of file res_crypto.c.

Referenced by crypto_init().

struct keys keys [static]

Referenced by ast_db_deltree(), ast_db_gettree(), handle_cli_database_show(), handle_cli_database_showkey(), and misdn_set_opt_exec().

Asterisk developer's documentation

res_crypto.c File Reference

Data Structures

Defines

Functions

Variables

Detailed Description

Define Documentation

Function Documentation

Variable Documentation