Resolve "SMIME Support"

Closes #232

enzevalos_iphone/c/smime-helpers.c

@@ -70,9 +70,10 @@ array_with_length *create_list_of_errors() {
         linked_list *cur = head;
         int i = 0;
         while (cur != NULL) {
-            arr[i] = (unsigned long) cur->content;
+            arr[i] = *((unsigned long*) cur->content);
             linked_list *old = cur;
             cur = cur->next;
+            free(old->content);
             free(old);
             i++;
         }
@@ -93,6 +94,8 @@ result * OpenSSL_encrypt(const char *text, const char *pem) {
     CMS_ContentInfo *cms = NULL;
     array_with_length *temp = NULL;
     result *res = malloc(sizeof(result));
+    res->certs = NULL;
+    res->num_certs = 0;
     
     rec_cert_bio = BIO_new_mem_buf(pem, (int) strlen(pem));
     
@@ -145,6 +148,7 @@ deinit:
     BIO_free(in);
     BIO_free(out); // also frees tmp
     BIO_free(rec_cert_bio);
+    sk_X509_pop_free(cert_stack, X509_free);
     X509_free(rec_cert);
     return res;
 }
@@ -159,6 +163,8 @@ result * OpenSSL_decrypt(const char *str, const char *pem_cert, const char *pem_
     EVP_PKEY *rkey = NULL;
     result *res = malloc(sizeof(result));
     array_with_length *temp = NULL;
+    res->certs = NULL;
+    res->num_certs = 0;
     
     // this trick allows to hardcode a certificate as a string
     rec_cert_bio = BIO_new_mem_buf(pem_cert, (int) strlen(pem_cert));
@@ -228,6 +234,8 @@ result * OpenSSL_sign(const char *text, const char *pem_cert, const char *pem_ke
     int flags = CMS_STREAM | CMS_PARTIAL;
 
     result *res = malloc(sizeof(result));
+    res->certs = NULL;
+    res->num_certs = 0;
     array_with_length *temp = NULL;
     
     if (detached) flags |= CMS_DETACHED;
@@ -296,6 +304,7 @@ deinit:
     BIO_free(sig_key_bio);
     EVP_PKEY_free(skey);
     X509_free(sig_cert);
+    sk_X509_pop_free(cert_stack, X509_free);
     
     return res;
 }
@@ -306,6 +315,7 @@ result * OpenSSL_verify(const char *text, char **pem_cert, const int num_certs)
     ver->certs = NULL;
     ver->errors = NULL;
     ver->res = NULL;
+    ver->num_certs = 0;
     
     BIO *in = NULL, *out = NULL;
     // recipient certificate
@@ -323,6 +333,7 @@ result * OpenSSL_verify(const char *text, char **pem_cert, const int num_certs)
     // this trick allows to hardcode a certificate as a string
     for (int i = 0; i<num_certs; i++) {
         BIO *sig_cert_bio = BIO_new_mem_buf(pem_cert[i], (int) strlen(pem_cert[i]));
+        sig_certs[i] = NULL;
         
         if (!sig_cert_bio) {
             printf("VERT Failed reading mykey.pem!\n");
@@ -372,10 +383,13 @@ deinit:
     ver->num_errors = temp->size;
     free(temp);
     CMS_ContentInfo_free(cms);
+    if (detached != NULL)  BIO_free(detached);
     BIO_free(in);
     BIO_free(out); // also frees tmp
     X509_STORE_free(cert_store);
-    for (int i =0;i>num_certs;i++) X509_free(sig_certs[i]); //We need to free all certs
+    for (int i =0;i<num_certs;i++) X509_free(sig_certs[i]); //We need to free all certs
+    free(sig_certs);
+    sk_X509_pop_free(cert_stack, X509_free);
     // OpenSSL ver 1.0.2.f has a bug (seemingly) that causes a crash when freeing cms content info pointers
     return ver;
 }