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D-Modem/pjproject-2.11.1/pjlib/include/pj/ssl_sock.h
Dan Bastone 636959b37b initial commit
2021-10-29 14:41:03 -04:00

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/* $Id$ */
/*
* Copyright (C) 2009-2011 Teluu Inc. (http://www.teluu.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __PJ_SSL_SOCK_H__
#define __PJ_SSL_SOCK_H__
/**
* @file ssl_sock.h
* @brief Secure socket
*/
#include <pj/ioqueue.h>
#include <pj/sock.h>
#include <pj/sock_qos.h>
PJ_BEGIN_DECL
/**
* @defgroup PJ_SSL_SOCK Secure socket I/O
* @brief Secure socket provides security on socket operation using standard
* security protocols such as SSL and TLS.
* @ingroup PJ_IO
* @{
*
* Secure socket wraps normal socket and applies security features, i.e:
* privacy and data integrity, on the socket traffic, using standard security
* protocols such as SSL and TLS.
*
* Secure socket employs active socket operations, which is similar to (and
* described more detail) in \ref PJ_ACTIVESOCK.
*/
/**
* This opaque structure describes the secure socket.
*/
typedef struct pj_ssl_sock_t pj_ssl_sock_t;
/**
* Opaque declaration of endpoint certificate or credentials. This may contains
* certificate, private key, and trusted Certificate Authorities list.
*/
typedef struct pj_ssl_cert_t pj_ssl_cert_t;
typedef enum pj_ssl_cert_verify_flag_t
{
/**
* No error in verification.
*/
PJ_SSL_CERT_ESUCCESS = 0,
/**
* The issuer certificate cannot be found.
*/
PJ_SSL_CERT_EISSUER_NOT_FOUND = (1 << 0),
/**
* The certificate is untrusted.
*/
PJ_SSL_CERT_EUNTRUSTED = (1 << 1),
/**
* The certificate has expired or not yet valid.
*/
PJ_SSL_CERT_EVALIDITY_PERIOD = (1 << 2),
/**
* One or more fields of the certificate cannot be decoded due to
* invalid format.
*/
PJ_SSL_CERT_EINVALID_FORMAT = (1 << 3),
/**
* The certificate cannot be used for the specified purpose.
*/
PJ_SSL_CERT_EINVALID_PURPOSE = (1 << 4),
/**
* The issuer info in the certificate does not match to the (candidate)
* issuer certificate, e.g: issuer name not match to subject name
* of (candidate) issuer certificate.
*/
PJ_SSL_CERT_EISSUER_MISMATCH = (1 << 5),
/**
* The CRL certificate cannot be found or cannot be read properly.
*/
PJ_SSL_CERT_ECRL_FAILURE = (1 << 6),
/**
* The certificate has been revoked.
*/
PJ_SSL_CERT_EREVOKED = (1 << 7),
/**
* The certificate chain length is too long.
*/
PJ_SSL_CERT_ECHAIN_TOO_LONG = (1 << 8),
/**
* The server identity does not match to any identities specified in
* the certificate, e.g: subjectAltName extension, subject common name.
* This flag will only be set by application as SSL socket does not
* perform server identity verification.
*/
PJ_SSL_CERT_EIDENTITY_NOT_MATCH = (1 << 30),
/**
* Unknown verification error.
*/
PJ_SSL_CERT_EUNKNOWN = (1 << 31)
} pj_ssl_cert_verify_flag_t;
typedef enum pj_ssl_cert_name_type
{
PJ_SSL_CERT_NAME_UNKNOWN = 0,
PJ_SSL_CERT_NAME_RFC822,
PJ_SSL_CERT_NAME_DNS,
PJ_SSL_CERT_NAME_URI,
PJ_SSL_CERT_NAME_IP
} pj_ssl_cert_name_type;
/**
* Describe structure of certificate info.
*/
typedef struct pj_ssl_cert_info {
unsigned version; /**< Certificate version */
pj_uint8_t serial_no[20]; /**< Serial number, array of
octets, first index is
MSB */
struct {
pj_str_t cn; /**< Common name */
pj_str_t info; /**< One line subject, fields
are separated by slash, e.g:
"CN=sample.org/OU=HRD" */
} subject; /**< Subject */
struct {
pj_str_t cn; /**< Common name */
pj_str_t info; /**< One line subject, fields
are separated by slash.*/
} issuer; /**< Issuer */
struct {
pj_time_val start; /**< Validity start */
pj_time_val end; /**< Validity end */
pj_bool_t gmt; /**< Flag if validity date/time
use GMT */
} validity; /**< Validity */
struct {
unsigned cnt; /**< # of entry */
struct {
pj_ssl_cert_name_type type;
/**< Name type */
pj_str_t name; /**< The name */
} *entry; /**< Subject alt name entry */
} subj_alt_name; /**< Subject alternative
name extension */
pj_str_t raw; /**< Raw certificate in PEM format, only
available for remote certificate. */
struct {
unsigned cnt; /**< # of entry */
pj_str_t *cert_raw;
} raw_chain;
} pj_ssl_cert_info;
/**
* The SSL certificate buffer.
*/
typedef pj_str_t pj_ssl_cert_buffer;
/**
* Create credential from files. TLS server application can provide multiple
* certificates (RSA, ECC, and DSA) by supplying certificate name with "_rsa"
* suffix, e.g: "pjsip_rsa.pem", the library will automatically check for
* other certificates with "_ecc" and "_dsa" suffix.
*
* @param CA_file The file of trusted CA list.
* @param cert_file The file of certificate.
* @param privkey_file The file of private key.
* @param privkey_pass The password of private key, if any.
* @param p_cert Pointer to credential instance to be created.
*
* @return PJ_SUCCESS when successful.
*/
PJ_DECL(pj_status_t) pj_ssl_cert_load_from_files(pj_pool_t *pool,
const pj_str_t *CA_file,
const pj_str_t *cert_file,
const pj_str_t *privkey_file,
const pj_str_t *privkey_pass,
pj_ssl_cert_t **p_cert);
/**
* Create credential from files. TLS server application can provide multiple
* certificates (RSA, ECC, and DSA) by supplying certificate name with "_rsa"
* suffix, e.g: "pjsip_rsa.pem", the library will automatically check for
* other certificates with "_ecc" and "_dsa" suffix.
*
* This is the same as pj_ssl_cert_load_from_files() but also
* accepts an additional param CA_path to load CA certificates from
* a directory.
*
* @param CA_file The file of trusted CA list.
* @param CA_path The path to a directory of trusted CA list.
* @param cert_file The file of certificate.
* @param privkey_file The file of private key.
* @param privkey_pass The password of private key, if any.
* @param p_cert Pointer to credential instance to be created.
*
* @return PJ_SUCCESS when successful.
*/
PJ_DECL(pj_status_t) pj_ssl_cert_load_from_files2(
pj_pool_t *pool,
const pj_str_t *CA_file,
const pj_str_t *CA_path,
const pj_str_t *cert_file,
const pj_str_t *privkey_file,
const pj_str_t *privkey_pass,
pj_ssl_cert_t **p_cert);
/**
* Create credential from data buffer. The certificate expected is in
* PEM format.
*
* @param CA_file The buffer of trusted CA list.
* @param cert_file The buffer of certificate.
* @param privkey_file The buffer of private key.
* @param privkey_pass The password of private key, if any.
* @param p_cert Pointer to credential instance to be created.
*
* @return PJ_SUCCESS when successful.
*/
PJ_DECL(pj_status_t) pj_ssl_cert_load_from_buffer(pj_pool_t *pool,
const pj_ssl_cert_buffer *CA_buf,
const pj_ssl_cert_buffer *cert_buf,
const pj_ssl_cert_buffer *privkey_buf,
const pj_str_t *privkey_pass,
pj_ssl_cert_t **p_cert);
/**
* Dump SSL certificate info.
*
* @param ci The certificate info.
* @param indent String for left indentation.
* @param buf The buffer where certificate info will be printed on.
* @param buf_size The buffer size.
*
* @return The length of the dump result, or -1 when buffer size
* is not sufficient.
*/
PJ_DECL(pj_ssize_t) pj_ssl_cert_info_dump(const pj_ssl_cert_info *ci,
const char *indent,
char *buf,
pj_size_t buf_size);
/**
* Get SSL certificate verification error messages from verification status.
*
* @param verify_status The SSL certificate verification status.
* @param error_strings Array of strings to receive the verification error
* messages.
* @param count On input it specifies maximum error messages should be
* retrieved. On output it specifies the number of error
* messages retrieved.
*
* @return PJ_SUCCESS when successful.
*/
PJ_DECL(pj_status_t) pj_ssl_cert_get_verify_status_strings(
pj_uint32_t verify_status,
const char *error_strings[],
unsigned *count);
/**
* Wipe out the keys in the SSL certificate.
*
* @param cert The SSL certificate.
*
*/
PJ_DECL(void) pj_ssl_cert_wipe_keys(pj_ssl_cert_t *cert);
/**
* Cipher suites enumeration.
*/
typedef enum pj_ssl_cipher {
/* Unsupported cipher */
PJ_TLS_UNKNOWN_CIPHER = -1,
/* NULL */
PJ_TLS_NULL_WITH_NULL_NULL = 0x00000000,
/* TLS/SSLv3 */
PJ_TLS_RSA_WITH_NULL_MD5 = 0x00000001,
PJ_TLS_RSA_WITH_NULL_SHA = 0x00000002,
PJ_TLS_RSA_WITH_NULL_SHA256 = 0x0000003B,
PJ_TLS_RSA_WITH_RC4_128_MD5 = 0x00000004,
PJ_TLS_RSA_WITH_RC4_128_SHA = 0x00000005,
PJ_TLS_RSA_WITH_3DES_EDE_CBC_SHA = 0x0000000A,
PJ_TLS_RSA_WITH_AES_128_CBC_SHA = 0x0000002F,
PJ_TLS_RSA_WITH_AES_256_CBC_SHA = 0x00000035,
PJ_TLS_RSA_WITH_AES_128_CBC_SHA256 = 0x0000003C,
PJ_TLS_RSA_WITH_AES_256_CBC_SHA256 = 0x0000003D,
PJ_TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA = 0x0000000D,
PJ_TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA = 0x00000010,
PJ_TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA = 0x00000013,
PJ_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA = 0x00000016,
PJ_TLS_DH_DSS_WITH_AES_128_CBC_SHA = 0x00000030,
PJ_TLS_DH_RSA_WITH_AES_128_CBC_SHA = 0x00000031,
PJ_TLS_DHE_DSS_WITH_AES_128_CBC_SHA = 0x00000032,
PJ_TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x00000033,
PJ_TLS_DH_DSS_WITH_AES_256_CBC_SHA = 0x00000036,
PJ_TLS_DH_RSA_WITH_AES_256_CBC_SHA = 0x00000037,
PJ_TLS_DHE_DSS_WITH_AES_256_CBC_SHA = 0x00000038,
PJ_TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x00000039,
PJ_TLS_DH_DSS_WITH_AES_128_CBC_SHA256 = 0x0000003E,
PJ_TLS_DH_RSA_WITH_AES_128_CBC_SHA256 = 0x0000003F,
PJ_TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 = 0x00000040,
PJ_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 = 0x00000067,
PJ_TLS_DH_DSS_WITH_AES_256_CBC_SHA256 = 0x00000068,
PJ_TLS_DH_RSA_WITH_AES_256_CBC_SHA256 = 0x00000069,
PJ_TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 = 0x0000006A,
PJ_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 = 0x0000006B,
PJ_TLS_DH_anon_WITH_RC4_128_MD5 = 0x00000018,
PJ_TLS_DH_anon_WITH_3DES_EDE_CBC_SHA = 0x0000001B,
PJ_TLS_DH_anon_WITH_AES_128_CBC_SHA = 0x00000034,
PJ_TLS_DH_anon_WITH_AES_256_CBC_SHA = 0x0000003A,
PJ_TLS_DH_anon_WITH_AES_128_CBC_SHA256 = 0x0000006C,
PJ_TLS_DH_anon_WITH_AES_256_CBC_SHA256 = 0x0000006D,
/* TLS (deprecated) */
PJ_TLS_RSA_EXPORT_WITH_RC4_40_MD5 = 0x00000003,
PJ_TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 = 0x00000006,
PJ_TLS_RSA_WITH_IDEA_CBC_SHA = 0x00000007,
PJ_TLS_RSA_EXPORT_WITH_DES40_CBC_SHA = 0x00000008,
PJ_TLS_RSA_WITH_DES_CBC_SHA = 0x00000009,
PJ_TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA = 0x0000000B,
PJ_TLS_DH_DSS_WITH_DES_CBC_SHA = 0x0000000C,
PJ_TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA = 0x0000000E,
PJ_TLS_DH_RSA_WITH_DES_CBC_SHA = 0x0000000F,
PJ_TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA = 0x00000011,
PJ_TLS_DHE_DSS_WITH_DES_CBC_SHA = 0x00000012,
PJ_TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA = 0x00000014,
PJ_TLS_DHE_RSA_WITH_DES_CBC_SHA = 0x00000015,
PJ_TLS_DH_anon_EXPORT_WITH_RC4_40_MD5 = 0x00000017,
PJ_TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA = 0x00000019,
PJ_TLS_DH_anon_WITH_DES_CBC_SHA = 0x0000001A,
/* SSLv3 */
PJ_SSL_FORTEZZA_KEA_WITH_NULL_SHA = 0x0000001C,
PJ_SSL_FORTEZZA_KEA_WITH_FORTEZZA_CBC_SHA = 0x0000001D,
PJ_SSL_FORTEZZA_KEA_WITH_RC4_128_SHA = 0x0000001E,
/* SSLv2 */
PJ_SSL_CK_RC4_128_WITH_MD5 = 0x00010080,
PJ_SSL_CK_RC4_128_EXPORT40_WITH_MD5 = 0x00020080,
PJ_SSL_CK_RC2_128_CBC_WITH_MD5 = 0x00030080,
PJ_SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5 = 0x00040080,
PJ_SSL_CK_IDEA_128_CBC_WITH_MD5 = 0x00050080,
PJ_SSL_CK_DES_64_CBC_WITH_MD5 = 0x00060040,
PJ_SSL_CK_DES_192_EDE3_CBC_WITH_MD5 = 0x000700C0
} pj_ssl_cipher;
/**
* Get cipher list supported by SSL/TLS backend.
*
* @param ciphers The ciphers buffer to receive cipher list.
* @param cipher_num Maximum number of ciphers to be received.
*
* @return PJ_SUCCESS when successful.
*/
PJ_DECL(pj_status_t) pj_ssl_cipher_get_availables(pj_ssl_cipher ciphers[],
unsigned *cipher_num);
/**
* Check if the specified cipher is supported by SSL/TLS backend.
*
* @param cipher The cipher.
*
* @return PJ_TRUE when supported.
*/
PJ_DECL(pj_bool_t) pj_ssl_cipher_is_supported(pj_ssl_cipher cipher);
/**
* Get cipher name string.
*
* @param cipher The cipher.
*
* @return The cipher name or NULL if cipher is not recognized/
* supported.
*/
PJ_DECL(const char*) pj_ssl_cipher_name(pj_ssl_cipher cipher);
/**
* Get cipher ID from cipher name string. Note that on different backends
* (e.g. OpenSSL or Symbian implementation), cipher names may not be
* equivalent for the same cipher ID.
*
* @param cipher_name The cipher name string.
*
* @return The cipher ID or PJ_TLS_UNKNOWN_CIPHER if the cipher
* name string is not recognized/supported.
*/
PJ_DECL(pj_ssl_cipher) pj_ssl_cipher_id(const char *cipher_name);
/**
* Elliptic curves enumeration.
*/
typedef enum pj_ssl_curve
{
PJ_TLS_UNKNOWN_CURVE = 0,
PJ_TLS_CURVE_SECT163K1 = 1,
PJ_TLS_CURVE_SECT163R1 = 2,
PJ_TLS_CURVE_SECT163R2 = 3,
PJ_TLS_CURVE_SECT193R1 = 4,
PJ_TLS_CURVE_SECT193R2 = 5,
PJ_TLS_CURVE_SECT233K1 = 6,
PJ_TLS_CURVE_SECT233R1 = 7,
PJ_TLS_CURVE_SECT239K1 = 8,
PJ_TLS_CURVE_SECT283K1 = 9,
PJ_TLS_CURVE_SECT283R1 = 10,
PJ_TLS_CURVE_SECT409K1 = 11,
PJ_TLS_CURVE_SECT409R1 = 12,
PJ_TLS_CURVE_SECT571K1 = 13,
PJ_TLS_CURVE_SECT571R1 = 14,
PJ_TLS_CURVE_SECP160K1 = 15,
PJ_TLS_CURVE_SECP160R1 = 16,
PJ_TLS_CURVE_SECP160R2 = 17,
PJ_TLS_CURVE_SECP192K1 = 18,
PJ_TLS_CURVE_SECP192R1 = 19,
PJ_TLS_CURVE_SECP224K1 = 20,
PJ_TLS_CURVE_SECP224R1 = 21,
PJ_TLS_CURVE_SECP256K1 = 22,
PJ_TLS_CURVE_SECP256R1 = 23,
PJ_TLS_CURVE_SECP384R1 = 24,
PJ_TLS_CURVE_SECP521R1 = 25,
PJ_TLS_CURVE_BRAINPOOLP256R1 = 26,
PJ_TLS_CURVE_BRAINPOOLP384R1 = 27,
PJ_TLS_CURVE_BRAINPOOLP512R1 = 28,
PJ_TLS_CURVE_ARBITRARY_EXPLICIT_PRIME_CURVES = 0XFF01,
PJ_TLS_CURVE_ARBITRARY_EXPLICIT_CHAR2_CURVES = 0XFF02
} pj_ssl_curve;
/**
* Get curve list supported by SSL/TLS backend.
*
* @param curves The curves buffer to receive curve list.
* @param curves_num Maximum number of curves to be received.
*
* @return PJ_SUCCESS when successful.
*/
PJ_DECL(pj_status_t) pj_ssl_curve_get_availables(pj_ssl_curve curves[],
unsigned *curve_num);
/**
* Check if the specified curve is supported by SSL/TLS backend.
*
* @param curve The curve.
*
* @return PJ_TRUE when supported.
*/
PJ_DECL(pj_bool_t) pj_ssl_curve_is_supported(pj_ssl_curve curve);
/**
* Get curve name string.
*
* @param curve The curve.
*
* @return The curve name or NULL if curve is not recognized/
* supported.
*/
PJ_DECL(const char*) pj_ssl_curve_name(pj_ssl_curve curve);
/**
* Get curve ID from curve name string. Note that on different backends
* (e.g. OpenSSL or Symbian implementation), curve names may not be
* equivalent for the same curve ID.
*
* @param curve_name The curve name string.
*
* @return The curve ID or PJ_TLS_UNKNOWN_CURVE if the curve
* name string is not recognized/supported.
*/
PJ_DECL(pj_ssl_curve) pj_ssl_curve_id(const char *curve_name);
/*
* Entropy enumeration
*/
typedef enum pj_ssl_entropy
{
PJ_SSL_ENTROPY_NONE = 0,
PJ_SSL_ENTROPY_EGD = 1,
PJ_SSL_ENTROPY_RANDOM = 2,
PJ_SSL_ENTROPY_URANDOM = 3,
PJ_SSL_ENTROPY_FILE = 4,
PJ_SSL_ENTROPY_UNKNOWN = 0x0F
} pj_ssl_entropy_t;
/**
* This structure contains the callbacks to be called by the secure socket.
*/
typedef struct pj_ssl_sock_cb
{
/**
* This callback is called when a data arrives as the result of
* pj_ssl_sock_start_read().
*
* @param ssock The secure socket.
* @param data The buffer containing the new data, if any. If
* the status argument is non-PJ_SUCCESS, this
* argument may be NULL.
* @param size The length of data in the buffer.
* @param status The status of the read operation. This may contain
* non-PJ_SUCCESS for example when the TCP connection
* has been closed. In this case, the buffer may
* contain left over data from previous callback which
* the application may want to process.
* @param remainder If application wishes to leave some data in the
* buffer (common for TCP applications), it should
* move the remainder data to the front part of the
* buffer and set the remainder length here. The value
* of this parameter will be ignored for datagram
* sockets.
*
* @return PJ_TRUE if further read is desired, and PJ_FALSE
* when application no longer wants to receive data.
* Application may destroy the secure socket in the
* callback and return PJ_FALSE here.
*/
pj_bool_t (*on_data_read)(pj_ssl_sock_t *ssock,
void *data,
pj_size_t size,
pj_status_t status,
pj_size_t *remainder);
/**
* This callback is called when a packet arrives as the result of
* pj_ssl_sock_start_recvfrom().
*
* @param ssock The secure socket.
* @param data The buffer containing the packet, if any. If
* the status argument is non-PJ_SUCCESS, this
* argument will be set to NULL.
* @param size The length of packet in the buffer. If
* the status argument is non-PJ_SUCCESS, this
* argument will be set to zero.
* @param src_addr Source address of the packet.
* @param addr_len Length of the source address.
* @param status This contains
*
* @return PJ_TRUE if further read is desired, and PJ_FALSE
* when application no longer wants to receive data.
* Application may destroy the secure socket in the
* callback and return PJ_FALSE here.
*/
pj_bool_t (*on_data_recvfrom)(pj_ssl_sock_t *ssock,
void *data,
pj_size_t size,
const pj_sockaddr_t *src_addr,
int addr_len,
pj_status_t status);
/**
* This callback is called when data has been sent.
*
* @param ssock The secure socket.
* @param send_key Key associated with the send operation.
* @param sent If value is positive non-zero it indicates the
* number of data sent. When the value is negative,
* it contains the error code which can be retrieved
* by negating the value (i.e. status=-sent).
*
* @return Application may destroy the secure socket in the
* callback and return PJ_FALSE here.
*/
pj_bool_t (*on_data_sent)(pj_ssl_sock_t *ssock,
pj_ioqueue_op_key_t *send_key,
pj_ssize_t sent);
/**
* This callback is called when new connection arrives as the result
* of pj_ssl_sock_start_accept(). If the status of accept operation is
* needed use on_accept_complete2 instead of this callback.
*
* @param ssock The secure socket.
* @param newsock The new incoming secure socket.
* @param src_addr The source address of the connection.
* @param addr_len Length of the source address.
*
* @return PJ_TRUE if further accept() is desired, and PJ_FALSE
* when application no longer wants to accept incoming
* connection. Application may destroy the secure socket
* in the callback and return PJ_FALSE here.
*/
pj_bool_t (*on_accept_complete)(pj_ssl_sock_t *ssock,
pj_ssl_sock_t *newsock,
const pj_sockaddr_t *src_addr,
int src_addr_len);
/**
* This callback is called when new connection arrives as the result
* of pj_ssl_sock_start_accept().
*
* @param asock The active socket.
* @param newsock The new incoming socket.
* @param src_addr The source address of the connection.
* @param addr_len Length of the source address.
* @param status The status of the accept operation. This may contain
* non-PJ_SUCCESS for example when the TCP listener is in
* bad state for example on iOS platform after the
* application waking up from background.
*
* @return PJ_TRUE if further accept() is desired, and PJ_FALSE
* when application no longer wants to accept incoming
* connection. Application may destroy the active socket
* in the callback and return PJ_FALSE here.
*/
pj_bool_t (*on_accept_complete2)(pj_ssl_sock_t *ssock,
pj_ssl_sock_t *newsock,
const pj_sockaddr_t *src_addr,
int src_addr_len,
pj_status_t status);
/**
* This callback is called when pending connect operation has been
* completed.
*
* @param ssock The secure socket.
* @param status The connection result. If connection has been
* successfully established, the status will contain
* PJ_SUCCESS.
*
* @return Application may destroy the secure socket in the
* callback and return PJ_FALSE here.
*/
pj_bool_t (*on_connect_complete)(pj_ssl_sock_t *ssock,
pj_status_t status);
} pj_ssl_sock_cb;
/**
* Enumeration of secure socket protocol types.
* This can be combined using bitwise OR operation.
*/
typedef enum pj_ssl_sock_proto
{
/**
* Default protocol of backend.
*/
PJ_SSL_SOCK_PROTO_DEFAULT = 0,
/**
* SSLv2.0 protocol.
*/
PJ_SSL_SOCK_PROTO_SSL2 = (1 << 0),
/**
* SSLv3.0 protocol.
*/
PJ_SSL_SOCK_PROTO_SSL3 = (1 << 1),
/**
* TLSv1.0 protocol.
*/
PJ_SSL_SOCK_PROTO_TLS1 = (1 << 2),
/**
* TLSv1.1 protocol.
*/
PJ_SSL_SOCK_PROTO_TLS1_1 = (1 << 3),
/**
* TLSv1.2 protocol.
*/
PJ_SSL_SOCK_PROTO_TLS1_2 = (1 << 4),
/**
* TLSv1.3 protocol.
*/
PJ_SSL_SOCK_PROTO_TLS1_3 = (1 << 5),
/**
* Certain backend implementation e.g:OpenSSL, has feature to enable all
* protocol.
*/
PJ_SSL_SOCK_PROTO_SSL23 = (1 << 16) - 1,
PJ_SSL_SOCK_PROTO_ALL = PJ_SSL_SOCK_PROTO_SSL23,
/**
* DTLSv1.0 protocol.
*/
PJ_SSL_SOCK_PROTO_DTLS1 = (1 << 16),
} pj_ssl_sock_proto;
/**
* Definition of secure socket info structure.
*/
typedef struct pj_ssl_sock_info
{
/**
* Describes whether secure socket connection is established, i.e: TLS/SSL
* handshaking has been done successfully.
*/
pj_bool_t established;
/**
* Describes secure socket protocol being used, see #pj_ssl_sock_proto.
* Use bitwise OR operation to combine the protocol type.
*/
pj_uint32_t proto;
/**
* Describes cipher suite being used, this will only be set when connection
* is established.
*/
pj_ssl_cipher cipher;
/**
* Describes local address.
*/
pj_sockaddr local_addr;
/**
* Describes remote address.
*/
pj_sockaddr remote_addr;
/**
* Describes active local certificate info.
*/
pj_ssl_cert_info *local_cert_info;
/**
* Describes active remote certificate info.
*/
pj_ssl_cert_info *remote_cert_info;
/**
* Status of peer certificate verification.
*/
pj_uint32_t verify_status;
/**
* Last native error returned by the backend.
*/
unsigned long last_native_err;
/**
* Group lock assigned to the ioqueue key.
*/
pj_grp_lock_t *grp_lock;
} pj_ssl_sock_info;
/**
* Definition of secure socket creation parameters.
*/
typedef struct pj_ssl_sock_param
{
/**
* Optional group lock to be assigned to the ioqueue key.
*
* Note that when a secure socket listener is configured with a group
* lock, any new secure socket of an accepted incoming connection
* will have its own group lock created automatically by the library,
* this group lock can be queried via pj_ssl_sock_get_info() in the info
* field pj_ssl_sock_info::grp_lock.
*/
pj_grp_lock_t *grp_lock;
/**
* Specifies socket address family, either pj_AF_INET() and pj_AF_INET6().
*
* Default is pj_AF_INET().
*/
int sock_af;
/**
* Specify socket type, either pj_SOCK_DGRAM() or pj_SOCK_STREAM().
*
* Default is pj_SOCK_STREAM().
*/
int sock_type;
/**
* Specify the ioqueue to use. Secure socket uses the ioqueue to perform
* active socket operations, see \ref PJ_ACTIVESOCK for more detail.
*/
pj_ioqueue_t *ioqueue;
/**
* Specify the timer heap to use. Secure socket uses the timer to provide
* auto cancelation on asynchronous operation when it takes longer time
* than specified timeout period, e.g: security negotiation timeout.
*/
pj_timer_heap_t *timer_heap;
/**
* Specify secure socket callbacks, see #pj_ssl_sock_cb.
*/
pj_ssl_sock_cb cb;
/**
* Specify secure socket user data.
*/
void *user_data;
/**
* Specify security protocol to use, see #pj_ssl_sock_proto. Use bitwise OR
* operation to combine the protocol type.
*
* Default is PJ_SSL_SOCK_PROTO_DEFAULT.
*/
pj_uint32_t proto;
/**
* Number of concurrent asynchronous operations that is to be supported
* by the secure socket. This value only affects socket receive and
* accept operations -- the secure socket will issue one or more
* asynchronous read and accept operations based on the value of this
* field. Setting this field to more than one will allow more than one
* incoming data or incoming connections to be processed simultaneously
* on multiprocessor systems, when the ioqueue is polled by more than
* one threads.
*
* The default value is 1.
*/
unsigned async_cnt;
/**
* The ioqueue concurrency to be forced on the socket when it is
* registered to the ioqueue. See #pj_ioqueue_set_concurrency() for more
* info about ioqueue concurrency.
*
* When this value is -1, the concurrency setting will not be forced for
* this socket, and the socket will inherit the concurrency setting of
* the ioqueue. When this value is zero, the secure socket will disable
* concurrency for the socket. When this value is +1, the secure socket
* will enable concurrency for the socket.
*
* The default value is -1.
*/
int concurrency;
/**
* If this option is specified, the secure socket will make sure that
* asynchronous send operation with stream oriented socket will only
* call the callback after all data has been sent. This means that the
* secure socket will automatically resend the remaining data until
* all data has been sent.
*
* Please note that when this option is specified, it is possible that
* error is reported after partial data has been sent. Also setting
* this will disable the ioqueue concurrency for the socket.
*
* Default value is 1.
*/
pj_bool_t whole_data;
/**
* Specify buffer size for sending operation. Buffering sending data
* is used for allowing application to perform multiple outstanding
* send operations. Whenever application specifies this setting too
* small, sending operation may return PJ_ENOMEM.
*
* Default value is 8192 bytes.
*/
pj_size_t send_buffer_size;
/**
* Specify buffer size for receiving encrypted (and perhaps compressed)
* data on underlying socket. This setting is unused on Symbian, since
* SSL/TLS Symbian backend, CSecureSocket, can use application buffer
* directly.
*
* Default value is 1500.
*/
pj_size_t read_buffer_size;
/**
* Number of ciphers contained in the specified cipher preference.
* If this is set to zero, then the cipher list used will be determined
* by the backend default (for OpenSSL backend, setting
* PJ_SSL_SOCK_OSSL_CIPHERS will be used).
*/
unsigned ciphers_num;
/**
* Ciphers and order preference. If empty, then default cipher list and
* its default order of the backend will be used.
*/
pj_ssl_cipher *ciphers;
/**
* Number of curves contained in the specified curve preference.
* If this is set to zero, then default curve list of the backend
* will be used.
*
* Default: 0 (zero).
*/
unsigned curves_num;
/**
* Curves and order preference. The #pj_ssl_curve_get_availables()
* can be used to check the available curves supported by backend.
*/
pj_ssl_curve *curves;
/**
* The supported signature algorithms. Set the sigalgs string
* using this form:
* "<DIGEST>+<ALGORITHM>:<DIGEST>+<ALGORITHM>"
* Digests are: "RSA", "DSA" or "ECDSA"
* Algorithms are: "MD5", "SHA1", "SHA224", "SHA256", "SHA384", "SHA512"
* Example: "ECDSA+SHA256:RSA+SHA256"
*/
pj_str_t sigalgs;
/**
* Reseed random number generator.
* For type #PJ_SSL_ENTROPY_FILE, parameter \a entropy_path
* must be set to a file.
* For type #PJ_SSL_ENTROPY_EGD, parameter \a entropy_path
* must be set to a socket.
*
* Default value is PJ_SSL_ENTROPY_NONE.
*/
pj_ssl_entropy_t entropy_type;
/**
* When using a file/socket for entropy #PJ_SSL_ENTROPY_EGD or
* #PJ_SSL_ENTROPY_FILE, \a entropy_path must contain the path
* to entropy socket/file.
*
* Default value is an empty string.
*/
pj_str_t entropy_path;
/**
* Security negotiation timeout. If this is set to zero (both sec and
* msec), the negotiation doesn't have a timeout.
*
* Default value is zero.
*/
pj_time_val timeout;
/**
* Specify whether endpoint should verify peer certificate.
*
* Default value is PJ_FALSE.
*/
pj_bool_t verify_peer;
/**
* When secure socket is acting as server (handles incoming connection),
* it will require the client to provide certificate.
*
* Default value is PJ_FALSE.
*/
pj_bool_t require_client_cert;
/**
* Server name indication. When secure socket is acting as client
* (perform outgoing connection) and the server may host multiple
* 'virtual' servers at a single underlying network address, setting
* this will allow client to tell the server a name of the server
* it is contacting. This must be set to hostname and literal IP addresses
* are not allowed.
*
* Default value is zero/not-set.
*/
pj_str_t server_name;
/**
* Specify if SO_REUSEADDR should be used for listening socket. This
* option will only be used with accept() operation.
*
* Default is PJ_FALSE.
*/
pj_bool_t reuse_addr;
/**
* QoS traffic type to be set on this transport. When application wants
* to apply QoS tagging to the transport, it's preferable to set this
* field rather than \a qos_param fields since this is more portable.
*
* Default value is PJ_QOS_TYPE_BEST_EFFORT.
*/
pj_qos_type qos_type;
/**
* Set the low level QoS parameters to the transport. This is a lower
* level operation than setting the \a qos_type field and may not be
* supported on all platforms.
*
* By default all settings in this structure are disabled.
*/
pj_qos_params qos_params;
/**
* Specify if the transport should ignore any errors when setting the QoS
* traffic type/parameters.
*
* Default: PJ_TRUE
*/
pj_bool_t qos_ignore_error;
/**
* Specify options to be set on the transport.
*
* By default there is no options.
*
*/
pj_sockopt_params sockopt_params;
/**
* Specify if the transport should ignore any errors when setting the
* sockopt parameters.
*
* Default: PJ_TRUE
*
*/
pj_bool_t sockopt_ignore_error;
} pj_ssl_sock_param;
/**
* The parameter for pj_ssl_sock_start_connect2().
*/
typedef struct pj_ssl_start_connect_param {
/**
* The pool to allocate some internal data for the operation.
*/
pj_pool_t *pool;
/**
* Local address.
*/
const pj_sockaddr_t *localaddr;
/**
* Port range for socket binding, relative to the start port number
* specified in \a localaddr. This is only applicable when the start port
* number is non zero.
*/
pj_uint16_t local_port_range;
/**
* Remote address.
*/
const pj_sockaddr_t *remaddr;
/**
* Length of buffer containing above addresses.
*/
int addr_len;
} pj_ssl_start_connect_param;
/**
* Initialize the secure socket parameters for its creation with
* the default values.
*
* @param param The parameter to be initialized.
*/
PJ_DECL(void) pj_ssl_sock_param_default(pj_ssl_sock_param *param);
/**
* Duplicate pj_ssl_sock_param.
*
* @param pool Pool to allocate memory.
* @param dst Destination parameter.
* @param src Source parameter.
*/
PJ_DECL(void) pj_ssl_sock_param_copy(pj_pool_t *pool,
pj_ssl_sock_param *dst,
const pj_ssl_sock_param *src);
/**
* Create secure socket instance.
*
* @param pool The pool for allocating secure socket instance.
* @param param The secure socket parameter, see #pj_ssl_sock_param.
* @param p_ssock Pointer to secure socket instance to be created.
*
* @return PJ_SUCCESS when successful.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_create(pj_pool_t *pool,
const pj_ssl_sock_param *param,
pj_ssl_sock_t **p_ssock);
/**
* Set secure socket certificate or credentials. Credentials may include
* certificate, private key and trusted Certification Authorities list.
* Normally, server socket must provide certificate (and private key).
* Socket client may also need to provide certificate in case requested
* by the server.
*
* @param ssock The secure socket instance.
* @param pool The pool.
* @param cert The endpoint certificate/credentials, see
* #pj_ssl_cert_t.
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_set_certificate(
pj_ssl_sock_t *ssock,
pj_pool_t *pool,
const pj_ssl_cert_t *cert);
/**
* Close and destroy the secure socket.
*
* @param ssock The secure socket.
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_close(pj_ssl_sock_t *ssock);
/**
* Associate arbitrary data with the secure socket. Application may
* inspect this data in the callbacks and associate it with higher
* level processing.
*
* @param ssock The secure socket.
* @param user_data The user data to be associated with the secure
* socket.
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_set_user_data(pj_ssl_sock_t *ssock,
void *user_data);
/**
* Retrieve the user data previously associated with this secure
* socket.
*
* @param ssock The secure socket.
*
* @return The user data.
*/
PJ_DECL(void*) pj_ssl_sock_get_user_data(pj_ssl_sock_t *ssock);
/**
* Retrieve the local address and port used by specified secure socket.
*
* @param ssock The secure socket.
* @param info The info buffer to be set, see #pj_ssl_sock_info.
*
* @return PJ_SUCCESS on successful.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_get_info(pj_ssl_sock_t *ssock,
pj_ssl_sock_info *info);
/**
* Starts read operation on this secure socket. This function will create
* \a async_cnt number of buffers (the \a async_cnt parameter was given
* in \a pj_ssl_sock_create() function) where each buffer is \a buff_size
* long. The buffers are allocated from the specified \a pool. Once the
* buffers are created, it then issues \a async_cnt number of asynchronous
* \a recv() operations to the socket and returns back to caller. Incoming
* data on the socket will be reported back to application via the
* \a on_data_read() callback.
*
* Application only needs to call this function once to initiate read
* operations. Further read operations will be done automatically by the
* secure socket when \a on_data_read() callback returns non-zero.
*
* @param ssock The secure socket.
* @param pool Pool used to allocate buffers for incoming data.
* @param buff_size The size of each buffer, in bytes.
* @param flags Flags to be given to pj_ioqueue_recv().
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_start_read(pj_ssl_sock_t *ssock,
pj_pool_t *pool,
unsigned buff_size,
pj_uint32_t flags);
/**
* Same as #pj_ssl_sock_start_read(), except that the application
* supplies the buffers for the read operation so that the acive socket
* does not have to allocate the buffers.
*
* @param ssock The secure socket.
* @param pool Pool used to allocate buffers for incoming data.
* @param buff_size The size of each buffer, in bytes.
* @param readbuf Array of packet buffers, each has buff_size size.
* @param flags Flags to be given to pj_ioqueue_recv().
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_start_read2(pj_ssl_sock_t *ssock,
pj_pool_t *pool,
unsigned buff_size,
void *readbuf[],
pj_uint32_t flags);
/**
* Same as pj_ssl_sock_start_read(), except that this function is used
* only for datagram sockets, and it will trigger \a on_data_recvfrom()
* callback instead.
*
* @param ssock The secure socket.
* @param pool Pool used to allocate buffers for incoming data.
* @param buff_size The size of each buffer, in bytes.
* @param flags Flags to be given to pj_ioqueue_recvfrom().
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_start_recvfrom(pj_ssl_sock_t *ssock,
pj_pool_t *pool,
unsigned buff_size,
pj_uint32_t flags);
/**
* Same as #pj_ssl_sock_start_recvfrom() except that the recvfrom()
* operation takes the buffer from the argument rather than creating
* new ones.
*
* @param ssock The secure socket.
* @param pool Pool used to allocate buffers for incoming data.
* @param buff_size The size of each buffer, in bytes.
* @param readbuf Array of packet buffers, each has buff_size size.
* @param flags Flags to be given to pj_ioqueue_recvfrom().
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_start_recvfrom2(pj_ssl_sock_t *ssock,
pj_pool_t *pool,
unsigned buff_size,
void *readbuf[],
pj_uint32_t flags);
/**
* Send data using the socket.
*
* @param ssock The secure socket.
* @param send_key The operation key to send the data, which is useful
* if application wants to submit multiple pending
* send operations and want to track which exact data
* has been sent in the \a on_data_sent() callback.
* @param data The data to be sent. This data must remain valid
* until the data has been sent.
* @param size The size of the data.
* @param flags Flags to be given to pj_ioqueue_send().
*
* @return PJ_SUCCESS if data has been sent immediately, or
* PJ_EPENDING if data cannot be sent immediately or
* PJ_ENOMEM when sending buffer could not handle all
* queued data, see \a send_buffer_size. The callback
* \a on_data_sent() will be called when data is actually
* sent. Any other return value indicates error condition.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_send(pj_ssl_sock_t *ssock,
pj_ioqueue_op_key_t *send_key,
const void *data,
pj_ssize_t *size,
unsigned flags);
/**
* Send datagram using the socket.
*
* @param ssock The secure socket.
* @param send_key The operation key to send the data, which is useful
* if application wants to submit multiple pending
* send operations and want to track which exact data
* has been sent in the \a on_data_sent() callback.
* @param data The data to be sent. This data must remain valid
* until the data has been sent.
* @param size The size of the data.
* @param flags Flags to be given to pj_ioqueue_send().
* @param addr The destination address.
* @param addr_len Length of buffer containing destination address.
*
* @return PJ_SUCCESS if data has been sent immediately, or
* PJ_EPENDING if data cannot be sent immediately. In
* this case the \a on_data_sent() callback will be
* called when data is actually sent. Any other return
* value indicates error condition.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_sendto(pj_ssl_sock_t *ssock,
pj_ioqueue_op_key_t *send_key,
const void *data,
pj_ssize_t *size,
unsigned flags,
const pj_sockaddr_t *addr,
int addr_len);
/**
* Starts asynchronous socket accept() operations on this secure socket.
* This function will issue \a async_cnt number of asynchronous \a accept()
* operations to the socket and returns back to caller. Incoming
* connection on the socket will be reported back to application via the
* \a on_accept_complete() callback.
*
* Application only needs to call this function once to initiate accept()
* operations. Further accept() operations will be done automatically by
* the secure socket when \a on_accept_complete() callback returns non-zero.
*
* @param ssock The secure socket.
* @param pool Pool used to allocate some internal data for the
* operation.
* @param localaddr Local address to bind on.
* @param addr_len Length of buffer containing local address.
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_start_accept(pj_ssl_sock_t *ssock,
pj_pool_t *pool,
const pj_sockaddr_t *local_addr,
int addr_len);
/**
* Same as #pj_ssl_sock_start_accept(), but application can provide
* a secure socket parameter, which will be used to create a new secure
* socket reported in \a on_accept_complete() callback when there is
* an incoming connection.
*
* @param ssock The secure socket.
* @param pool Pool used to allocate some internal data for the
* operation.
* @param localaddr Local address to bind on.
* @param addr_len Length of buffer containing local address.
* @param newsock_param Secure socket parameter for new accepted sockets.
*
* @return PJ_SUCCESS if the operation has been successful,
* or the appropriate error code on failure.
*/
PJ_DECL(pj_status_t)
pj_ssl_sock_start_accept2(pj_ssl_sock_t *ssock,
pj_pool_t *pool,
const pj_sockaddr_t *local_addr,
int addr_len,
const pj_ssl_sock_param *newsock_param);
/**
* Starts asynchronous socket connect() operation and SSL/TLS handshaking
* for this socket. Once the connection is done (either successfully or not),
* the \a on_connect_complete() callback will be called.
*
* @param ssock The secure socket.
* @param pool The pool to allocate some internal data for the
* operation.
* @param localaddr Local address.
* @param remaddr Remote address.
* @param addr_len Length of buffer containing above addresses.
*
* @return PJ_SUCCESS if connection can be established immediately
* or PJ_EPENDING if connection cannot be established
* immediately. In this case the \a on_connect_complete()
* callback will be called when connection is complete.
* Any other return value indicates error condition.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_start_connect(pj_ssl_sock_t *ssock,
pj_pool_t *pool,
const pj_sockaddr_t *localaddr,
const pj_sockaddr_t *remaddr,
int addr_len);
/**
* Same as #pj_ssl_sock_start_connect(), but application can provide a
* \a port_range parameter, which will be used to bind the socket to
* random port.
*
* @param ssock The secure socket.
*
* @param connect_param The parameter, refer to \a pj_ssl_start_connect_param.
*
* @return PJ_SUCCESS if connection can be established immediately
* or PJ_EPENDING if connection cannot be established
* immediately. In this case the \a on_connect_complete()
* callback will be called when connection is complete.
* Any other return value indicates error condition.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_start_connect2(
pj_ssl_sock_t *ssock,
pj_ssl_start_connect_param *connect_param);
/**
* Starts SSL/TLS renegotiation over an already established SSL connection
* for this socket. This operation is performed transparently, no callback
* will be called once the renegotiation completed successfully. However,
* when the renegotiation fails, the connection will be closed and callback
* \a on_data_read() will be invoked with non-PJ_SUCCESS status code.
*
* @param ssock The secure socket.
*
* @return PJ_SUCCESS if renegotiation is completed immediately,
* or PJ_EPENDING if renegotiation has been started and
* waiting for completion, or the appropriate error code
* on failure.
*/
PJ_DECL(pj_status_t) pj_ssl_sock_renegotiate(pj_ssl_sock_t *ssock);
/**
* @}
*/
PJ_END_DECL
#endif /* __PJ_SSL_SOCK_H__ */
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