wbrawner/openssl
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Place return values after examples in doc

Browse source 
Reviewed-by: Richard Levitte <levitte@openssl.org>

(cherry picked from commit 4564e77ae9)

 Conflicts:
	doc/internal/man3/openssl_ctx_get_data.pod (non-existant)
	doc/man3/OPENSSL_s390xcap.pod (non-existant)

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/8736)
This commit is contained in:
Paul Yang 2019-02-26 13:11:10 +08:00 committed by Dr. Matthias St. Pierre
parent e861d659c0
commit d090fc0019
18 changed files with 260 additions and 260 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

64
doc/man3/ASN1_TIME_set.pod
View file

@ -173,38 +173,6 @@ certificates complying with RFC5280 et al use GMT anyway.
Use the ASN1_TIME_normalize() function to normalize the time value before
printing to get GMT results.
=head1 EXAMPLES
Set a time structure to one hour after the current time and print it out:
#include <time.h>
#include <openssl/asn1.h>
ASN1_TIME *tm;
time_t t;
BIO *b;
t = time(NULL);
tm = ASN1_TIME_adj(NULL, t, 0, 60 * 60);
b = BIO_new_fp(stdout, BIO_NOCLOSE);
ASN1_TIME_print(b, tm);
ASN1_STRING_free(tm);
BIO_free(b);
Determine if one time is later or sooner than the current time:
int day, sec;
if (!ASN1_TIME_diff(&day, &sec, NULL, to))
/* Invalid time format */
if (day > 0 || sec > 0)
printf("Later\n");
else if (day < 0 || sec < 0)
printf("Sooner\n");
else
printf("Same\n");
=head1 RETURN VALUES
ASN1_TIME_set(), ASN1_UTCTIME_set(), ASN1_GENERALIZEDTIME_set(), ASN1_TIME_adj(),
@ -238,6 +206,38 @@ ASN1_TIME_compare() returns -1 if B<a> is before B<b>, 0 if B<a> equals B<b>, or
ASN1_TIME_to_generalizedtime() returns a pointer to
the appropriate time structure on success or NULL if an error occurred.
=head1 EXAMPLES
Set a time structure to one hour after the current time and print it out:
#include <time.h>
#include <openssl/asn1.h>
ASN1_TIME *tm;
time_t t;
BIO *b;
t = time(NULL);
tm = ASN1_TIME_adj(NULL, t, 0, 60 * 60);
b = BIO_new_fp(stdout, BIO_NOCLOSE);
ASN1_TIME_print(b, tm);
ASN1_STRING_free(tm);
BIO_free(b);
Determine if one time is later or sooner than the current time:
int day, sec;
if (!ASN1_TIME_diff(&day, &sec, NULL, to))
/* Invalid time format */
if (day > 0 || sec > 0)
printf("Later\n");
else if (day < 0 || sec < 0)
printf("Sooner\n");
else
printf("Same\n");
=head1 HISTORY
The ASN1_TIME_to_tm() function was added in OpenSSL 1.1.1.

14
doc/man3/ASN1_generate_nconf.pod
View file

@ -162,6 +162,13 @@ bits are zero.
=back
=head1 RETURN VALUES
ASN1_generate_nconf() and ASN1_generate_v3() return the encoded
data as an B<ASN1_TYPE> structure or B<NULL> if an error occurred.
The error codes that can be obtained by L<ERR_get_error(3)>.
=head1 EXAMPLES
A simple IA5String:
@ -247,13 +254,6 @@ structure:
e=INTEGER:0x010001
=head1 RETURN VALUES
ASN1_generate_nconf() and ASN1_generate_v3() return the encoded
data as an B<ASN1_TYPE> structure or B<NULL> if an error occurred.
The error codes that can be obtained by L<ERR_get_error(3)>.
=head1 SEE ALSO
L<ERR_get_error(3)>

14
doc/man3/BIO_push.pod
View file

@ -36,6 +36,13 @@ The process of calling BIO_push() and BIO_pop() on a BIO may have additional
consequences (a control call is made to the affected BIOs) any effects will
be noted in the descriptions of individual BIOs.
=head1 RETURN VALUES
BIO_push() returns the end of the chain, B<b>.
BIO_pop() returns the next BIO in the chain, or NULL if there is no next
BIO.
=head1 EXAMPLES
For these examples suppose B<md1> and B<md2> are digest BIOs, B<b64> is
@ -62,13 +69,6 @@ by B<md1> and B<md2>. If the call:
The call will return B<b64> and the new chain will be B<md1-b64-f> data can
be written to B<md1> as before.
=head1 RETURN VALUES
BIO_push() returns the end of the chain, B<b>.
BIO_pop() returns the next BIO in the chain, or NULL if there is no next
BIO.
=head1 SEE ALSO
L<bio>

36
doc/man3/BIO_s_file.pod
View file

@ -80,6 +80,24 @@ On Windows BIO_new_files reserves for the filename argument to be
UTF-8 encoded. In other words if you have to make it work in multi-
lingual environment, encode file names in UTF-8.
=head1 RETURN VALUES
BIO_s_file() returns the file BIO method.
BIO_new_file() and BIO_new_fp() return a file BIO or NULL if an error
occurred.
BIO_set_fp() and BIO_get_fp() return 1 for success or 0 for failure
(although the current implementation never return 0).
BIO_seek() returns the same value as the underlying fseek() function:
0 for success or -1 for failure.
BIO_tell() returns the current file position.
BIO_read_filename(), BIO_write_filename(), BIO_append_filename() and
BIO_rw_filename() return 1 for success or 0 for failure.
=head1 EXAMPLES
File BIO "hello world":
@ -122,24 +140,6 @@ Alternative technique:
BIO_printf(out, "Hello World\n");
BIO_free(out);
=head1 RETURN VALUES
BIO_s_file() returns the file BIO method.
BIO_new_file() and BIO_new_fp() return a file BIO or NULL if an error
occurred.
BIO_set_fp() and BIO_get_fp() return 1 for success or 0 for failure
(although the current implementation never return 0).
BIO_seek() returns the same value as the underlying fseek() function:
0 for success or -1 for failure.
BIO_tell() returns the current file position.
BIO_read_filename(), BIO_write_filename(), BIO_append_filename() and
BIO_rw_filename() return 1 for success or 0 for failure.
=head1 BUGS
BIO_reset() and BIO_seek() are implemented using fseek() on the underlying

12
doc/man3/CONF_modules_load_file.pod
View file

@ -67,6 +67,12 @@ Applications can use the CONF_modules_load() function if they wish to load a
configuration file themselves and have finer control over how errors are
treated.
=head1 RETURN VALUES
These functions return 1 for success and a zero or negative value for
failure. If module errors are not ignored the return code will reflect the
return value of the failing module (this will always be zero or negative).
=head1 EXAMPLES
Load a configuration file and print out any errors and exit (missing file
@ -122,12 +128,6 @@ Load and parse configuration file manually, custom error handling:
NCONF_free(cnf);
}
=head1 RETURN VALUES
These functions return 1 for success and a zero or negative value for
failure. If module errors are not ignored the return code will reflect the
return value of the failing module (this will always be zero or negative).
=head1 SEE ALSO
L<config(5)>, L<OPENSSL_config(3)>

14
doc/man3/EVP_PKEY_set1_RSA.pod
View file

@ -114,13 +114,6 @@ is no longer possible: the equivalent is EVP_PKEY_base_id(pkey).
EVP_PKEY_set1_engine() is typically used by an ENGINE returning an HSM
key as part of its routine to load a private key.
=head1 EXAMPLES
After loading an ECC key, it is possible to convert it to using SM2
algorithms with EVP_PKEY_set_alias_type:
EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2);
=head1 RETURN VALUES
EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and
@ -141,6 +134,13 @@ EVP_PKEY_set1_engine() returns 1 for success and 0 for failure.
EVP_PKEY_set_alias_type() returns 1 for success and 0 for error.
=head1 EXAMPLES
After loading an ECC key, it is possible to convert it to using SM2
algorithms with EVP_PKEY_set_alias_type:
EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2);
=head1 SEE ALSO
L<EVP_PKEY_new(3)>

22
doc/man3/OBJ_nid2obj.pod
View file

@ -130,6 +130,17 @@ These functions cannot return B<const> because an B<ASN1_OBJECT> can
represent both an internal, constant, OID and a dynamically-created one.
The latter cannot be constant because it needs to be freed after use.
=head1 RETURN VALUES
OBJ_nid2obj() returns an B<ASN1_OBJECT> structure or B<NULL> is an
error occurred.
OBJ_nid2ln() and OBJ_nid2sn() returns a valid string or B<NULL>
on error.
OBJ_obj2nid(), OBJ_ln2nid(), OBJ_sn2nid() and OBJ_txt2nid() return
a NID or B<NID_undef> on error.
=head1 EXAMPLES
Create an object for B<commonName>:
@ -159,17 +170,6 @@ Instead B<buf> must point to a valid buffer and B<buf_len> should
be set to a positive value. A buffer length of 80 should be more
than enough to handle any OID encountered in practice.
=head1 RETURN VALUES
OBJ_nid2obj() returns an B<ASN1_OBJECT> structure or B<NULL> is an
error occurred.
OBJ_nid2ln() and OBJ_nid2sn() returns a valid string or B<NULL>
on error.
OBJ_obj2nid(), OBJ_ln2nid(), OBJ_sn2nid() and OBJ_txt2nid() return
a NID or B<NID_undef> on error.
=head1 SEE ALSO
L<ERR_get_error(3)>

130
doc/man3/PEM_read_bio_PrivateKey.pod
View file

@ -298,71 +298,6 @@ arbitrary data to be passed to the callback by the application
B<must> return the number of characters in the passphrase or -1 if
an error occurred.
=head1 EXAMPLES
Although the PEM routines take several arguments in almost all applications
most of them are set to 0 or NULL.
Read a certificate in PEM format from a BIO:
X509 *x;
x = PEM_read_bio_X509(bp, NULL, 0, NULL);
if (x == NULL)
/* Error */
Alternative method:
X509 *x = NULL;
if (!PEM_read_bio_X509(bp, &x, 0, NULL))
/* Error */
Write a certificate to a BIO:
if (!PEM_write_bio_X509(bp, x))
/* Error */
Write a private key (using traditional format) to a BIO using
triple DES encryption, the pass phrase is prompted for:
if (!PEM_write_bio_PrivateKey(bp, key, EVP_des_ede3_cbc(), NULL, 0, 0, NULL))
/* Error */
Write a private key (using PKCS#8 format) to a BIO using triple
DES encryption, using the pass phrase "hello":
if (!PEM_write_bio_PKCS8PrivateKey(bp, key, EVP_des_ede3_cbc(),
NULL, 0, 0, "hello"))
/* Error */
Read a private key from a BIO using a pass phrase callback:
key = PEM_read_bio_PrivateKey(bp, NULL, pass_cb, "My Private Key");
if (key == NULL)
/* Error */
Skeleton pass phrase callback:
int pass_cb(char *buf, int size, int rwflag, void *u)
{
/* We'd probably do something else if 'rwflag' is 1 */
printf("Enter pass phrase for \"%s\"\n", (char *)u);
/* get pass phrase, length 'len' into 'tmp' */
char *tmp = "hello";
if (tmp == NULL) /* An error occurred */
return -1;
size_t len = strlen(tmp);
if (len > size)
len = size;
memcpy(buf, tmp, len);
return len;
}
=head1 NOTES
The old B<PrivateKey> write routines are retained for compatibility.
@ -460,6 +395,71 @@ if an error occurred.
The write routines return 1 for success or 0 for failure.
=head1 EXAMPLES
Although the PEM routines take several arguments in almost all applications
most of them are set to 0 or NULL.
Read a certificate in PEM format from a BIO:
X509 *x;
x = PEM_read_bio_X509(bp, NULL, 0, NULL);
if (x == NULL)
/* Error */
Alternative method:
X509 *x = NULL;
if (!PEM_read_bio_X509(bp, &x, 0, NULL))
/* Error */
Write a certificate to a BIO:
if (!PEM_write_bio_X509(bp, x))
/* Error */
Write a private key (using traditional format) to a BIO using
triple DES encryption, the pass phrase is prompted for:
if (!PEM_write_bio_PrivateKey(bp, key, EVP_des_ede3_cbc(), NULL, 0, 0, NULL))
/* Error */
Write a private key (using PKCS#8 format) to a BIO using triple
DES encryption, using the pass phrase "hello":
if (!PEM_write_bio_PKCS8PrivateKey(bp, key, EVP_des_ede3_cbc(),
NULL, 0, 0, "hello"))
/* Error */
Read a private key from a BIO using a pass phrase callback:
key = PEM_read_bio_PrivateKey(bp, NULL, pass_cb, "My Private Key");
if (key == NULL)
/* Error */
Skeleton pass phrase callback:
int pass_cb(char *buf, int size, int rwflag, void *u)
{
/* We'd probably do something else if 'rwflag' is 1 */
printf("Enter pass phrase for \"%s\"\n", (char *)u);
/* get pass phrase, length 'len' into 'tmp' */
char *tmp = "hello";
if (tmp == NULL) /* An error occurred */
return -1;
size_t len = strlen(tmp);
if (len > size)
len = size;
memcpy(buf, tmp, len);
return len;
}
=head1 HISTORY
The old Netscape certificate sequences were no longer documented

34
doc/man3/SSL_CONF_cmd.pod
View file

@ -594,6 +594,23 @@ checking or translation of the command value. For example if the return
value is B<SSL_CONF_TYPE_FILE> an application could translate a relative
pathname to an absolute pathname.
=head1 RETURN VALUES
SSL_CONF_cmd() returns 1 if the value of B<cmd> is recognised and B<value> is
B<NOT> used and 2 if both B<cmd> and B<value> are used. In other words it
returns the number of arguments processed. This is useful when processing
command lines.
A return value of -2 means B<cmd> is not recognised.
A return value of -3 means B<cmd> is recognised and the command requires a
value but B<value> is NULL.
A return code of 0 indicates that both B<cmd> and B<value> are valid but an
error occurred attempting to perform the operation: for example due to an
error in the syntax of B<value> in this case the error queue may provide
additional information.
=head1 EXAMPLES
Set supported signature algorithms:
@ -640,23 +657,6 @@ Set supported curves to P-256, P-384:
SSL_CONF_cmd(ctx, "Curves", "P-256:P-384");
=head1 RETURN VALUES
SSL_CONF_cmd() returns 1 if the value of B<cmd> is recognised and B<value> is
B<NOT> used and 2 if both B<cmd> and B<value> are used. In other words it
returns the number of arguments processed. This is useful when processing
command lines.
A return value of -2 means B<cmd> is not recognised.
A return value of -3 means B<cmd> is recognised and the command requires a
value but B<value> is NULL.
A return code of 0 indicates that both B<cmd> and B<value> are valid but an
error occurred attempting to perform the operation: for example due to an
error in the syntax of B<value> in this case the error queue may provide
additional information.
=head1 SEE ALSO
L<SSL_CONF_CTX_new(3)>,

34
doc/man3/SSL_CTX_load_verify_locations.pod
View file

@ -100,23 +100,6 @@ with different expiration dates. If a "certificate expired" verification
error occurs, no other certificate will be searched. Make sure to not
have expired certificates mixed with valid ones.
=head1 EXAMPLES
Generate a CA certificate file with descriptive text from the CA certificates
ca1.pem ca2.pem ca3.pem:
#!/bin/sh
rm CAfile.pem
for i in ca1.pem ca2.pem ca3.pem ; do
openssl x509 -in $i -text >> CAfile.pem
done
Prepare the directory /some/where/certs containing several CA certificates
for use as B<CApath>:
cd /some/where/certs
c_rehash .
=head1 RETURN VALUES
For SSL_CTX_load_verify_locations the following return values can occur:
@ -139,6 +122,23 @@ SSL_CTX_set_default_verify_paths(), SSL_CTX_set_default_verify_dir() and
SSL_CTX_set_default_verify_file() all return 1 on success or 0 on failure. A
missing default location is still treated as a success.
=head1 EXAMPLES
Generate a CA certificate file with descriptive text from the CA certificates
ca1.pem ca2.pem ca3.pem:
#!/bin/sh
rm CAfile.pem
for i in ca1.pem ca2.pem ca3.pem ; do
openssl x509 -in $i -text >> CAfile.pem
done
Prepare the directory /some/where/certs containing several CA certificates
for use as B<CApath>:
cd /some/where/certs
c_rehash .
=head1 SEE ALSO
L<ssl(7)>,

8
doc/man3/SSL_CTX_set1_sigalgs.pod
View file

@ -83,6 +83,10 @@ be used with the B<_list> forms of the API.
The use of MD5 as a digest is strongly discouraged due to security weaknesses.
=head1 RETURN VALUES
All these functions return 1 for success and 0 for failure.
=head1 EXAMPLES
Set supported signature algorithms to SHA256 with ECDSA and SHA256 with RSA
@ -97,10 +101,6 @@ using a string:
SSL_CTX_set1_sigalgs_list(ctx, "ECDSA+SHA256:RSA+SHA256");
=head1 RETURN VALUES
All these functions return 1 for success and 0 for failure.
=head1 SEE ALSO
L<ssl(7)>, L<SSL_get_shared_sigalgs(3)>,

16
doc/man3/SSL_CTX_set_generate_session_id.pod
View file

@ -82,6 +82,14 @@ and the same race condition applies.
The callback must return 0 if it cannot generate a session id for whatever
reason and return 1 on success.
=head1 RETURN VALUES
SSL_CTX_set_generate_session_id() and SSL_set_generate_session_id()
always return 1.
SSL_has_matching_session_id() returns 1 if another session with the
same id is already in the cache.
=head1 EXAMPLES
The callback function listed will generate a session id with the
@ -114,14 +122,6 @@ server id given, and will fill the rest with pseudo random bytes:
}
=head1 RETURN VALUES
SSL_CTX_set_generate_session_id() and SSL_set_generate_session_id()
always return 1.
SSL_has_matching_session_id() returns 1 if another session with the
same id is already in the cache.
=head1 SEE ALSO
L<ssl(7)>, L<SSL_get_version(3)>

8
doc/man3/SSL_CTX_set_tlsext_ticket_key_cb.pod
View file

@ -121,6 +121,10 @@ For example if a cipher suite uses 256 bit ciphers but only a 128 bit ticket key
the overall security is only 128 bits because breaking the ticket key will
enable an attacker to obtain the session keys.
=head1 RETURN VALUES
returns 0 to indicate the callback function was set.
=head1 EXAMPLES
Reference Implementation:
@ -175,10 +179,6 @@ Reference Implementation:
}
}
=head1 RETURN VALUES
returns 0 to indicate the callback function was set.
=head1 SEE ALSO
L<ssl(7)>, L<SSL_set_session(3)>,

16
doc/man3/SSL_CTX_set_tmp_dh_callback.pod
View file

@ -81,6 +81,14 @@ are advised to either use SSL_CTX_set_tmp_dh() or alternatively, use
the callback but ignore B<keylength> and B<is_export> and simply
supply at least 2048-bit parameters in the callback.
=head1 RETURN VALUES
SSL_CTX_set_tmp_dh_callback() and SSL_set_tmp_dh_callback() do not return
diagnostic output.
SSL_CTX_set_tmp_dh() and SSL_set_tmp_dh() do return 1 on success and 0
on failure. Check the error queue to find out the reason of failure.
=head1 EXAMPLES
Setup DH parameters with a key length of 2048 bits. (Error handling
@ -109,14 +117,6 @@ Code for setting up parameters during server initialization:
/* Error. */
...
=head1 RETURN VALUES
SSL_CTX_set_tmp_dh_callback() and SSL_set_tmp_dh_callback() do not return
diagnostic output.
SSL_CTX_set_tmp_dh() and SSL_set_tmp_dh() do return 1 on success and 0
on failure. Check the error queue to find out the reason of failure.
=head1 SEE ALSO
L<ssl(7)>, L<SSL_CTX_set_cipher_list(3)>,

30
doc/man3/SSL_load_client_CA_file.pod
View file

@ -23,21 +23,6 @@ the specific usage as support function for
L<SSL_CTX_set_client_CA_list(3)>,
it is not limited to CA certificates.
=head1 EXAMPLES
Load names of CAs from file and use it as a client CA list:
SSL_CTX *ctx;
STACK_OF(X509_NAME) *cert_names;
...
cert_names = SSL_load_client_CA_file("/path/to/CAfile.pem");
if (cert_names != NULL)
SSL_CTX_set_client_CA_list(ctx, cert_names);
else
/* error */
...
=head1 RETURN VALUES
The following return values can occur:
@ -54,6 +39,21 @@ Pointer to the subject names of the successfully read certificates.
=back
=head1 EXAMPLES
Load names of CAs from file and use it as a client CA list:
SSL_CTX *ctx;
STACK_OF(X509_NAME) *cert_names;
...
cert_names = SSL_load_client_CA_file("/path/to/CAfile.pem");
if (cert_names != NULL)
SSL_CTX_set_client_CA_list(ctx, cert_names);
else
/* error */
...
=head1 SEE ALSO
L<ssl(7)>,

18
doc/man3/X509_NAME_add_entry_by_txt.pod
View file

@ -74,6 +74,15 @@ structure respectively. This will then be a multivalued RDN:
since multivalues RDNs are very seldom used B<set> is almost
always set to zero.
=head1 RETURN VALUES
X509_NAME_add_entry_by_txt(), X509_NAME_add_entry_by_OBJ(),
X509_NAME_add_entry_by_NID() and X509_NAME_add_entry() return 1 for
success of 0 if an error occurred.
X509_NAME_delete_entry() returns either the deleted B<X509_NAME_ENTRY>
structure of B<NULL> if an error occurred.
=head1 EXAMPLES
Create an B<X509_NAME> structure:
@ -95,15 +104,6 @@ Create an B<X509_NAME> structure:
"Joe Bloggs", -1, -1, 0))
/* Error */
=head1 RETURN VALUES
X509_NAME_add_entry_by_txt(), X509_NAME_add_entry_by_OBJ(),
X509_NAME_add_entry_by_NID() and X509_NAME_add_entry() return 1 for
success of 0 if an error occurred.
X509_NAME_delete_entry() returns either the deleted B<X509_NAME_ENTRY>
structure of B<NULL> if an error occurred.
=head1 BUGS
B<type> can still be set to B<V_ASN1_APP_CHOOSE> to use a

24
doc/man3/X509_NAME_get_index_by_NID.pod
View file

@ -69,6 +69,18 @@ Applications which could pass invalid NIDs to X509_NAME_get_index_by_NID()
should check for the return value of -2. Alternatively the NID validity
can be determined first by checking OBJ_nid2obj(nid) is not NULL.
=head1 RETURN VALUES
X509_NAME_get_index_by_NID() and X509_NAME_get_index_by_OBJ()
return the index of the next matching entry or -1 if not found.
X509_NAME_get_index_by_NID() can also return -2 if the supplied
NID is invalid.
X509_NAME_entry_count() returns the total number of entries.
X509_NAME_get_entry() returns an B<X509_NAME> pointer to the
requested entry or B<NULL> if the index is invalid.
=head1 EXAMPLES
Process all entries:
@ -94,18 +106,6 @@ Process all commonName entries:
/* Do something with e */
}
=head1 RETURN VALUES
X509_NAME_get_index_by_NID() and X509_NAME_get_index_by_OBJ()
return the index of the next matching entry or -1 if not found.
X509_NAME_get_index_by_NID() can also return -2 if the supplied
NID is invalid.
X509_NAME_entry_count() returns the total number of entries.
X509_NAME_get_entry() returns an B<X509_NAME> pointer to the
requested entry or B<NULL> if the index is invalid.
=head1 SEE ALSO
L<ERR_get_error(3)>, L<d2i_X509_NAME(3)>

26
doc/man3/d2i_X509.pod
View file

@ -496,6 +496,19 @@ Represents the B<DigestInfo> structure defined in PKCS#1 and PKCS#7.
=back
=head1 RETURN VALUES
d2i_TYPE(), d2i_TYPE_bio() and d2i_TYPE_fp() return a valid B<TYPE> structure
or B<NULL> if an error occurs. If the "reuse" capability has been used with
a valid structure being passed in via B<a>, then the object is not freed in
the event of error but may be in a potentially invalid or inconsistent state.
i2d_TYPE() returns the number of bytes successfully encoded or a negative
value if an error occurs.
i2d_TYPE_bio() and i2d_TYPE_fp() return 1 for success and 0 if an error
occurs.
=head1 EXAMPLES
Allocate and encode the DER encoding of an X509 structure:
@ -586,19 +599,6 @@ structure has been modified after deserialization or previous
serialization. This is because some objects cache the encoding for
efficiency reasons.
=head1 RETURN VALUES
d2i_TYPE(), d2i_TYPE_bio() and d2i_TYPE_fp() return a valid B<TYPE> structure
or B<NULL> if an error occurs. If the "reuse" capability has been used with
a valid structure being passed in via B<a>, then the object is not freed in
the event of error but may be in a potentially invalid or inconsistent state.
i2d_TYPE() returns the number of bytes successfully encoded or a negative
value if an error occurs.
i2d_TYPE_bio() and i2d_TYPE_fp() return 1 for success and 0 if an error
occurs.
=head1 COPYRIGHT
Copyright 1998-2018 The OpenSSL Project Authors. All Rights Reserved.