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Error out if attempting to use a removed feature

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If the compile-time configuration enables an option that was removed
in Mbed TLS 3.0, and the effect of removing the option would likely
not be detected at build time, #error out in check_config.h.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2021-04-21 18:45:41 +02:00
parent b683776181
commit fa4e4b8645
1 changed files with 34 additions and 0 deletions
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34
include/mbedtls/check_config.h
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@ -839,6 +839,40 @@
#error "MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH defined, but not all prerequisites"
#endif
/* Reject attempts to enable options that have been removed and that could
* cause a build to succeed but with features removed. */
#if defined(MBEDTLS_HAVEGE_C) //no-check-names
#error "MBEDTLS_HAVEGE_C was removed in Mbed TLS 3.0. See https://github.com/ARMmbed/mbedtls/issues/2599"
#endif
#if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) //no-check-names
#error "MBEDTLS_SSL_HW_RECORD_ACCEL was removed in Mbed TLS 3.0. See https://github.com/ARMmbed/mbedtls/issues/4031"
#endif
#if defined(MBEDTLS_SSL_PROTO_SSL3) //no-check-names
#error "MBEDTLS_SSL_PROTO_SSL3 (SSL v3.0 support) was removed in Mbed TLS 3.0. See https://github.com/ARMmbed/mbedtls/issues/4031"
#endif
#if defined(MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO) //no-check-names
#error "MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO (SSL v2 ClientHello support) was removed in Mbed TLS 3.0. See https://github.com/ARMmbed/mbedtls/issues/4031"
#endif
#if defined(MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT) //no-check-names
#error "MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT (compatibility with the buggy implementation of truncated HMAC in Mbed TLS up to 2.7) was removed in Mbed TLS 3.0. See https://github.com/ARMmbed/mbedtls/issues/4031"
#endif
#if defined(MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES) //no-check-names
#error "MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES was removed in Mbed TLS 3.0. See the ChangeLog for entry if you really need SHA-1-signed certificates."
#endif
#if defined(MBEDTLS_ZLIB_SUPPORT) //no-check-names
#error "MBEDTLS_ZLIB_SUPPORT was removed in Mbed TLS 3.0. See https://github.com/ARMmbed/mbedtls/issues/4031"
#endif
/*
* Avoid warning from -pedantic. This is a convenient place for this
* workaround since this is included by every single file before the