DGNum/hostapd
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Use os_memdup()

Browse source 
This leads to cleaner code overall, and also reduces the size
of the hostapd and wpa_supplicant binaries (in hwsim test build
on x86_64) by about 2.5 and 3.5KiB respectively.

The mechanical conversions all over the code were done with
the following spatch:

    @@
    expression SIZE, SRC;
    expression a;
    @@
    -a = os_malloc(SIZE);
    +a = os_memdup(SRC, SIZE);
    <...
    if (!a) {...}
    ...>
    -os_memcpy(a, SRC, SIZE);

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2017-03-07 10:17:23 +01:00 • committed by Jouni Malinen
parent dbdda355d0
commit a1f11e34c4
73 changed files with 201 additions and 376 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/tls/tlsv1_client_read.c
View file

@ -685,10 +685,9 @@ static int tlsv1_process_diffie_hellman(struct tlsv1_client *conn,
pos, conn->dh_p_len);
goto fail;
}
conn->dh_p = os_malloc(conn->dh_p_len);
conn->dh_p = os_memdup(pos, conn->dh_p_len);
if (conn->dh_p == NULL)
goto fail;
os_memcpy(conn->dh_p, pos, conn->dh_p_len);
pos += conn->dh_p_len;
wpa_hexdump(MSG_DEBUG, "TLSv1: DH p (prime)",
conn->dh_p, conn->dh_p_len);
@ -700,10 +699,9 @@ static int tlsv1_process_diffie_hellman(struct tlsv1_client *conn,
if (val == 0 || val > (size_t) (end - pos))
goto fail;
conn->dh_g_len = val;
conn->dh_g = os_malloc(conn->dh_g_len);
conn->dh_g = os_memdup(pos, conn->dh_g_len);
if (conn->dh_g == NULL)
goto fail;
os_memcpy(conn->dh_g, pos, conn->dh_g_len);
pos += conn->dh_g_len;
wpa_hexdump(MSG_DEBUG, "TLSv1: DH g (generator)",
conn->dh_g, conn->dh_g_len);
@ -717,10 +715,9 @@ static int tlsv1_process_diffie_hellman(struct tlsv1_client *conn,
if (val == 0 || val > (size_t) (end - pos))
goto fail;
conn->dh_ys_len = val;
conn->dh_ys = os_malloc(conn->dh_ys_len);
conn->dh_ys = os_memdup(pos, conn->dh_ys_len);
if (conn->dh_ys == NULL)
goto fail;
os_memcpy(conn->dh_ys, pos, conn->dh_ys_len);
pos += conn->dh_ys_len;
wpa_hexdump(MSG_DEBUG, "TLSv1: DH Ys (server's public value)",
conn->dh_ys, conn->dh_ys_len);

6
src/tls/tlsv1_cred.c
View file

@ -1166,10 +1166,9 @@ static int tlsv1_set_dhparams_der(struct tlsv1_credentials *cred,
if (hdr.length == 0)
return -1;
os_free(cred->dh_p);
cred->dh_p = os_malloc(hdr.length);
cred->dh_p = os_memdup(hdr.payload, hdr.length);
if (cred->dh_p == NULL)
return -1;
os_memcpy(cred->dh_p, hdr.payload, hdr.length);
cred->dh_p_len = hdr.length;
pos = hdr.payload + hdr.length;
@ -1188,10 +1187,9 @@ static int tlsv1_set_dhparams_der(struct tlsv1_credentials *cred,
if (hdr.length == 0)
return -1;
os_free(cred->dh_g);
cred->dh_g = os_malloc(hdr.length);
cred->dh_g = os_memdup(hdr.payload, hdr.length);
if (cred->dh_g == NULL)
return -1;
os_memcpy(cred->dh_g, hdr.payload, hdr.length);
cred->dh_g_len = hdr.length;
return 0;

9
src/tls/x509v3.c
View file

@ -274,13 +274,12 @@ static int x509_parse_public_key(const u8 *buf, size_t len,
*/
}
os_free(cert->public_key);
cert->public_key = os_malloc(hdr.length - 1);
cert->public_key = os_memdup(pos + 1, hdr.length - 1);
if (cert->public_key == NULL) {
wpa_printf(MSG_DEBUG, "X509: Failed to allocate memory for "
"public key");
return -1;
}
os_memcpy(cert->public_key, pos + 1, hdr.length - 1);
cert->public_key_len = hdr.length - 1;
wpa_hexdump(MSG_MSGDUMP, "X509: subjectPublicKey",
cert->public_key, cert->public_key_len);
@ -925,10 +924,9 @@ static int x509_parse_alt_name_ip(struct x509_name *name,
/* iPAddress OCTET STRING */
wpa_hexdump(MSG_MSGDUMP, "X509: altName - iPAddress", pos, len);
os_free(name->ip);
name->ip = os_malloc(len);
name->ip = os_memdup(pos, len);
if (name->ip == NULL)
return -1;
os_memcpy(name->ip, pos, len);
name->ip_len = len;
return 0;
}
@ -1700,14 +1698,13 @@ struct x509_certificate * x509_certificate_parse(const u8 *buf, size_t len)
return NULL;
}
os_free(cert->sign_value);
cert->sign_value = os_malloc(hdr.length - 1);
cert->sign_value = os_memdup(pos + 1, hdr.length - 1);
if (cert->sign_value == NULL) {
wpa_printf(MSG_DEBUG, "X509: Failed to allocate memory for "
"signatureValue");
x509_certificate_free(cert);
return NULL;
}
os_memcpy(cert->sign_value, pos + 1, hdr.length - 1);
cert->sign_value_len = hdr.length - 1;
wpa_hexdump(MSG_MSGDUMP, "X509: signature",
cert->sign_value, cert->sign_value_len);