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From b9005f1a69ad989a50ffa68a41c959551f0cb158 Mon Sep 17 00:00:00 2001
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From: Matej Habrnal <mhabrnal@redhat.com>
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Date: Wed, 23 May 2018 11:15:38 +0200
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Subject: [PATCH 1/1] Remove dependency on deprecated nss-pem
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This commit removes dependency on nss-pem which is deprecated and
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reimplements TLS client to use libnssckbi.so instead [1].
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Resolves #1578427
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[1] https://docs-old.fedoraproject.org/en-US/Fedora_Security_Team/1/html/Defensive_Coding/sect-Defensive_Coding-TLS-Client-NSS.html#ex-Defensive_Coding-TLS-NSS-Init
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Signed-off-by: Matej Habrnal <mhabrnal@redhat.com>
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---
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 abrt.spec.in                      |  2 +-
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 src/plugins/abrt-retrace-client.c |  5 ++-
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 src/plugins/https-utils.c         | 53 ++++++-------------------------
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 src/plugins/https-utils.h         |  4 +--
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 4 files changed, 15 insertions(+), 49 deletions(-)
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diff --git a/abrt.spec.in b/abrt.spec.in
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index f423562c..eb6fdaf9 100644
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--- a/abrt.spec.in
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+++ b/abrt.spec.in
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@@ -255,7 +255,7 @@ Summary: %{name}'s retrace client
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 Requires: %{name} = %{version}-%{release}
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 Requires: xz
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 Requires: tar
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-Requires: nss-pem
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+Requires: p11-kit-trust
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 %description retrace-client
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 This package contains the client application for Retrace server
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diff --git a/src/plugins/abrt-retrace-client.c b/src/plugins/abrt-retrace-client.c
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index ae5ef83b..d50d45fb 100644
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--- a/src/plugins/abrt-retrace-client.c
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+++ b/src/plugins/abrt-retrace-client.c
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@@ -1281,8 +1281,7 @@ int main(int argc, char **argv)
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     /* Initialize NSS */
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     SECMODModule *mod;
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-    PK11GenericObject *cert;
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-    nss_init(&mod, &cert);
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+    nss_init(&mod);
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     /* Run the desired operation. */
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     int result = 0;
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@@ -1334,7 +1333,7 @@ int main(int argc, char **argv)
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         error_msg_and_die(_("Unknown operation: %s."), operation);
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     /* Shutdown NSS. */
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-    nss_close(mod, cert);
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+    nss_close(mod);
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     return result;
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 }
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diff --git a/src/plugins/https-utils.c b/src/plugins/https-utils.c
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index 7a22729b..7a9479ca 100644
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--- a/src/plugins/https-utils.c
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+++ b/src/plugins/https-utils.c
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@@ -142,37 +142,6 @@ static const char *ssl_get_configdir()
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     return NULL;
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 }
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-static PK11GenericObject *nss_load_cacert(const char *filename)
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-{
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-    PK11SlotInfo *slot = PK11_FindSlotByName("PEM Token #0");
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-    if (!slot)
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-        error_msg_and_die(_("Failed to get slot 'PEM Token #0': %d."), PORT_GetError());
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-
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-    CK_ATTRIBUTE template[4];
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-    CK_OBJECT_CLASS class = CKO_CERTIFICATE;
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-
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-#define PK11_SETATTRS(x,id,v,l) \
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-    do {                        \
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-        (x)->type = (id);       \
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-        (x)->pValue=(v);        \
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-        (x)->ulValueLen = (l);  \
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-    } while (0)
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-
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-    PK11_SETATTRS(&template[0], CKA_CLASS, &class, sizeof(class));
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-    CK_BBOOL cktrue = CK_TRUE;
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-    PK11_SETATTRS(&template[1], CKA_TOKEN, &cktrue, sizeof(CK_BBOOL));
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-    PK11_SETATTRS(&template[2], CKA_LABEL, (unsigned char*)filename, strlen(filename)+1);
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-    PK11_SETATTRS(&template[3], CKA_TRUST, &cktrue, sizeof(CK_BBOOL));
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-    PK11GenericObject *cert = PK11_CreateGenericObject(slot, template, 4, PR_FALSE);
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-    PK11_FreeSlot(slot);
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-    return cert;
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-}
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-
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-static char *ssl_get_password(PK11SlotInfo *slot, PRBool retry, void *arg)
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-{
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-    return NULL;
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-}
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-
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 void ssl_connect(struct https_cfg *cfg, PRFileDesc **tcp_sock, PRFileDesc **ssl_sock)
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 {
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     PRAddrInfo *addrinfo = PR_GetAddrInfoByName(cfg->url, PR_AF_UNSPEC, PR_AI_ADDRCONFIG);
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@@ -411,7 +380,7 @@ char *http_join_chunked(char *body, int bodylen)
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     return strbuf_free_nobuf(result);
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 }
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-void nss_init(SECMODModule **mod, PK11GenericObject **cert)
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+void nss_init(SECMODModule **mod)
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 {
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     SECStatus sec_status;
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     const char *configdir = ssl_get_configdir();
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@@ -422,21 +391,19 @@ void nss_init(SECMODModule **mod, PK11GenericObject **cert)
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     if (SECSuccess != sec_status)
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         error_msg_and_die(_("Failed to initialize NSS."));
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-    char *user_module = xstrdup("library=libnsspem.so name=PEM");
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-    *mod = SECMOD_LoadUserModule(user_module, NULL, PR_FALSE);
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-    free(user_module);
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-    if (!*mod || !(*mod)->loaded)
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-        error_msg_and_die(_("Failed to initialize security module."));
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-
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-    *cert = nss_load_cacert("/etc/pki/tls/certs/ca-bundle.crt");
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-    PK11_SetPasswordFunc(ssl_get_password);
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-    NSS_SetDomesticPolicy();
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+    // Initialize the trusted certificate store.
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+    char module_name[] = "library=libnssckbi.so name=\"Root Certs\"";
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+    *mod = SECMOD_LoadUserModule(module_name, NULL, PR_FALSE);
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+    if (*mod == NULL || !(*mod)->loaded)
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+    {
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+        const PRErrorCode err = PR_GetError();
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+        error_msg_and_die("error: NSPR error code %d: %s\n", err, PR_ErrorToName(err));
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+    }
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 }
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-void nss_close(SECMODModule *mod, PK11GenericObject *cert)
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+void nss_close(SECMODModule *mod)
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 {
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     SSL_ClearSessionCache();
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-    PK11_DestroyGenericObject(cert);
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     SECMOD_UnloadUserModule(mod);
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     SECMOD_DestroyModule(mod);
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     SECStatus sec_status = NSS_Shutdown();
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diff --git a/src/plugins/https-utils.h b/src/plugins/https-utils.h
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index 8ff9aede..f0b167d3 100644
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--- a/src/plugins/https-utils.h
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+++ b/src/plugins/https-utils.h
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@@ -61,7 +61,7 @@ int http_get_response_code(const char *message);
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 void http_print_headers(FILE *file, const char *message);
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 char *tcp_read_response(PRFileDesc *tcp_sock);
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 char *http_join_chunked(char *body, int bodylen);
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-void nss_init(SECMODModule **mod, PK11GenericObject **cert);
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-void nss_close(SECMODModule *mod, PK11GenericObject *cert);
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+void nss_init(SECMODModule **mod);
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+void nss_close(SECMODModule *mod);
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 #endif
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-- 
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2.17.0
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