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In lib/hx509/cert.c, fix cases where errors are returned as certs.

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In both hx509_cert_init() and hx509_cert_init_data(), there is an
output parameter for the error code but there are cases where the
error is used as a return value instead of the specified hx509_cert.
We fix these issues.  We also check if error is non-NULL and only
set the error in this case, allowing the functions to be called
with error == NULL without segfault.
This commit is contained in:
Roland C. Dowdeswell
2012-12-03 14:12:52 +08:00
parent 27dd8621fb
commit 1b5b82183c
1 changed files with 14 additions and 6 deletions
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16
lib/hx509/cert.c
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@@ -232,8 +232,11 @@ hx509_cert_init(hx509_context context, const Certificate *c, heim_error_t *error
int ret; int ret;
cert = malloc(sizeof(*cert)); cert = malloc(sizeof(*cert));
if (cert == NULL) if (cert == NULL) {
return heim_error_create_enomem(); if (error)
*error = heim_error_create_enomem();
return NULL;
}
cert->ref = 1; cert->ref = 1;
cert->friendlyname = NULL; cert->friendlyname = NULL;
cert->attrs.len = 0; cert->attrs.len = 0;
@@ -246,7 +249,9 @@ hx509_cert_init(hx509_context context, const Certificate *c, heim_error_t *error
cert->data = calloc(1, sizeof(*(cert->data))); cert->data = calloc(1, sizeof(*(cert->data)));
if (cert->data == NULL) { if (cert->data == NULL) {
free(cert); free(cert);
return heim_error_create_enomem(); if (error)
*error = heim_error_create_enomem();
return NULL;
} }
ret = copy_Certificate(c, cert->data); ret = copy_Certificate(c, cert->data);
if (ret) { if (ret) {
@@ -289,13 +294,16 @@ hx509_cert_init_data(hx509_context context,
ret = decode_Certificate(ptr, len, &t, &size); ret = decode_Certificate(ptr, len, &t, &size);
if (ret) { if (ret) {
if (error)
*error = heim_error_create(ret, "Failed to decode certificate"); *error = heim_error_create(ret, "Failed to decode certificate");
return NULL; return NULL;
} }
if (size != len) { if (size != len) {
free_Certificate(&t); free_Certificate(&t);
return heim_error_create(HX509_EXTRA_DATA_AFTER_STRUCTURE, if (error)
*error = heim_error_create(HX509_EXTRA_DATA_AFTER_STRUCTURE,
"Extra data after certificate"); "Extra data after certificate");
return NULL;
} }
cert = hx509_cert_init(context, &t, error); cert = hx509_cert_init(context, &t, error);