strcmp: change all !str[n]cmp to str[n]cmp == 0

Change all !str[n]cmp to be str[n]cmp == 0 consistently across the codebase.

Issue #231

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>

9 files changed, 21 insertions, 20 deletions

diff --git a/src/core/iomgr/resolve_address_posix.c b/src/core/iomgr/resolve_address_posix.c
index 85085dc37d..9a9283c93c 100644
--- a/src/core/iomgr/resolve_address_posix.c
+++ b/src/core/iomgr/resolve_address_posix.c
@@ -109,7 +109,7 @@ grpc_resolved_addresses *grpc_blocking_resolve_address(
     };
     int i;
     for (i = 0; i < (int)(sizeof(svc) / sizeof(svc[0])); i++) {
-      if (!strcmp(port, svc[i][0])) {
+      if (strcmp(port, svc[i][0]) == 0) {
         s = getaddrinfo(host, svc[i][1], &hints, &result);
         break;
       }
diff --git a/src/core/security/credentials.c b/src/core/security/credentials.c
index 7e72b238c8..3ad1e7edd7 100644
--- a/src/core/security/credentials.c
+++ b/src/core/security/credentials.c
@@ -348,7 +348,7 @@ static void jwt_get_request_metadata(grpc_credentials *creds,
   {
     gpr_mu_lock(&c->cache_mu);
     if (c->cached.service_url != NULL &&
-        !strcmp(c->cached.service_url, service_url) &&
+        strcmp(c->cached.service_url, service_url) == 0 &&
         c->cached.jwt_md != NULL &&
         (gpr_time_cmp(gpr_time_sub(c->cached.jwt_expiration, gpr_now()),
                       refresh_threshold) > 0)) {
@@ -957,7 +957,7 @@ static grpc_credentials_array get_creds_array(grpc_credentials **creds_addr) {
   grpc_credentials *creds = *creds_addr;
   result.creds_array = creds_addr;
   result.num_creds = 1;
-  if (!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE)) {
+  if (strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE) == 0) {
     result = *grpc_composite_credentials_get_credentials(creds);
   }
   return result;
@@ -995,7 +995,7 @@ const grpc_credentials_array *grpc_composite_credentials_get_credentials(
     grpc_credentials *creds) {
   const grpc_composite_credentials *c =
       (const grpc_composite_credentials *)creds;
-  GPR_ASSERT(!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE));
+  GPR_ASSERT(strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE) == 0);
   return &c->inner;
 }
 
@@ -1003,14 +1003,14 @@ grpc_credentials *grpc_credentials_contains_type(
     grpc_credentials *creds, const char *type,
     grpc_credentials **composite_creds) {
   size_t i;
-  if (!strcmp(creds->type, type)) {
+  if (strcmp(creds->type, type) == 0) {
     if (composite_creds != NULL) *composite_creds = NULL;
     return creds;
-  } else if (!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE)) {
+  } else if (strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE) == 0) {
     const grpc_credentials_array *inner_creds_array =
         grpc_composite_credentials_get_credentials(creds);
     for (i = 0; i < inner_creds_array->num_creds; i++) {
-      if (!strcmp(type, inner_creds_array->creds_array[i]->type)) {
+      if (strcmp(type, inner_creds_array->creds_array[i]->type) == 0) {
         if (composite_creds != NULL) *composite_creds = creds;
         return inner_creds_array->creds_array[i];
       }
diff --git a/src/core/security/google_default_credentials.c b/src/core/security/google_default_credentials.c
index dc0e453b87..bdc907e7b3 100644
--- a/src/core/security/google_default_credentials.c
+++ b/src/core/security/google_default_credentials.c
@@ -75,8 +75,8 @@ static void on_compute_engine_detection_http_response(
     size_t i;
     for (i = 0; i < response->hdr_count; i++) {
       grpc_httpcli_header *header = &response->hdrs[i];
-      if (!strcmp(header->key, "Metadata-Flavor") &&
-          !strcmp(header->value, "Google")) {
+      if (strcmp(header->key, "Metadata-Flavor") == 0 &&
+          strcmp(header->value, "Google") == 0) {
         detector->success = 1;
         break;
       }
diff --git a/src/core/security/json_token.c b/src/core/security/json_token.c
index 26d57036a6..40b612b206 100644
--- a/src/core/security/json_token.c
+++ b/src/core/security/json_token.c
@@ -257,7 +257,7 @@ static char *dot_concat_and_free_strings(char *str1, char *str2) {
 }
 
 const EVP_MD *openssl_digest_from_algorithm(const char *algorithm) {
-  if (!strcmp(algorithm, GRPC_JWT_RSA_SHA256_ALGORITHM)) {
+  if (strcmp(algorithm, GRPC_JWT_RSA_SHA256_ALGORITHM) == 0) {
     return EVP_sha256();
   } else {
     gpr_log(GPR_ERROR, "Unknown algorithm %s.", algorithm);
diff --git a/src/core/security/security_context.c b/src/core/security/security_context.c
index 62264e4105..e180cad52b 100644
--- a/src/core/security/security_context.c
+++ b/src/core/security/security_context.c
@@ -421,7 +421,7 @@ static grpc_security_status ssl_channel_check_call_host(
   /* If the target name was overridden, then the original target_name was
      'checked' transitively during the previous peer check at the end of the
      handshake. */
-  if (c->overridden_target_name != NULL && !strcmp(host, c->target_name)) {
+  if (c->overridden_target_name != NULL && strcmp(host, c->target_name) == 0) {
     return GRPC_SECURITY_OK;
   } else {
     return GRPC_SECURITY_ERROR;
@@ -610,7 +610,7 @@ grpc_channel *grpc_ssl_channel_create(grpc_credentials *ssl_creds,
 
   for (i = 0; args && i < args->num_args; i++) {
     grpc_arg *arg = &args->args[i];
-    if (!strcmp(arg->key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) &&
+    if (strcmp(arg->key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) == 0 &&
         arg->type == GRPC_ARG_STRING) {
       overridden_target_name = arg->value.string;
       break;
diff --git a/src/core/security/server_secure_chttp2.c b/src/core/security/server_secure_chttp2.c
index b15c553b82..c155b80b7e 100644
--- a/src/core/security/server_secure_chttp2.c
+++ b/src/core/security/server_secure_chttp2.c
@@ -139,11 +139,11 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr, grp
   /* create security context */
   if (creds == NULL) goto error;
 
-  if (!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_SSL)) {
+  if (strcmp(creds->type, GRPC_CREDENTIALS_TYPE_SSL) == 0) {
     status = grpc_ssl_server_security_context_create(
         grpc_ssl_server_credentials_get_config(creds), &ctx);
-  } else if (!strcmp(creds->type,
-                     GRPC_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY)) {
+  } else if (strcmp(creds->type,
+                    GRPC_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY) == 0) {
     ctx = grpc_fake_server_security_context_create();
     status = GRPC_SECURITY_OK;
   }
diff --git a/src/core/tsi/fake_transport_security.c b/src/core/tsi/fake_transport_security.c
index f58f04ea20..9ce1ddb95e 100644
--- a/src/core/tsi/fake_transport_security.c
+++ b/src/core/tsi/fake_transport_security.c
@@ -102,8 +102,8 @@ static tsi_result tsi_fake_handshake_message_from_string(
     const char* msg_string, tsi_fake_handshake_message* msg) {
   int i;
   for (i = 0; i < TSI_FAKE_HANDSHAKE_MESSAGE_MAX; i++) {
-    if (!strncmp(msg_string, tsi_fake_handshake_message_strings[i],
-                 strlen(tsi_fake_handshake_message_strings[i]))) {
+    if (strncmp(msg_string, tsi_fake_handshake_message_strings[i],
+                strlen(tsi_fake_handshake_message_strings[i])) == 0) {
       *msg = i;
       return TSI_OK;
     }
diff --git a/src/core/tsi/ssl_transport_security.c b/src/core/tsi/ssl_transport_security.c
index dc43f7e270..33645ca8b8 100644
--- a/src/core/tsi/ssl_transport_security.c
+++ b/src/core/tsi/ssl_transport_security.c
@@ -1083,7 +1083,8 @@ static int does_entry_match_name(const char* entry, size_t entry_length,
     if (entry_length == 0) return 0;
   }
 
-  if ((name_length == entry_length) && !strncmp(name, entry, entry_length)) {
+  if ((name_length == entry_length) &&
+      strncmp(name, entry, entry_length) == 0) {
     return 1; /* Perfect match. */
   }
   if (entry[0] != '*') return 0;
@@ -1110,7 +1111,7 @@ static int does_entry_match_name(const char* entry, size_t entry_length,
     name_subdomain_length--;
   }
   return ((entry_length > 0) && (name_subdomain_length == entry_length) &&
-          !strncmp(entry, name_subdomain, entry_length));
+          strncmp(entry, name_subdomain, entry_length) == 0);
 }
 
 static int ssl_server_handshaker_factory_servername_callback(SSL* ssl, int* ap,
diff --git a/src/core/tsi/transport_security.c b/src/core/tsi/transport_security.c
index c8c74c5de5..f4ab9d2bc6 100644
--- a/src/core/tsi/transport_security.c
+++ b/src/core/tsi/transport_security.c
@@ -208,7 +208,7 @@ const tsi_peer_property* tsi_peer_get_property_by_name(const tsi_peer* self,
       return property;
     }
     if (name != NULL && property->name != NULL &&
-        !strcmp(property->name, name)) {
+        strcmp(property->name, name) == 0) {
       return property;
     }
   }