heads/initrd/bin/wget-measure.sh

#!/bin/bash
# get a file and extend a TPM PCR
. /etc/functions

die() {
	TRACE "Under /bin/wget-measure.sh:die"
        echo >&2 "$@"
        exit 1
}

INDEX="$1"
URL="$2"

if [ -z "$INDEX" -o -z "$URL" ]; then
	die "Usage: $0 pcr-index url"
fi


wget "$URL" || die "$URL: failed"

FILE="`basename "$URL"`"
tpmr extend -ix "$INDEX" -if "$FILE" || die "$FILE: tpm extend failed"
Add dual support for real bash and busybox's bash(ash) - modify bash to have it configured with -Os 2023-02-08 21:01:48 +00:00			`#!/bin/bash`
wget and measure files into the PCR 2017-03-27 22:03:29 +00:00			`# get a file and extend a TPM PCR`
All scripts and functions: Add DEBUG calling trace on console when CONFIG_DEBUG_OUTPUT is exported in board config -qemu-coreboot-*whiptail-tpm1(-hotp) boards have 'export CONFIG_DEBUG_OUTPUT=y' by default now 2023-02-18 17:58:43 +00:00			`. /etc/functions`
wget and measure files into the PCR 2017-03-27 22:03:29 +00:00
			`die() {`
Add TRACE function tracing function to output on console when enabled - Add TRACE function tracing output under etc/functions, depending on CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT enabled in board configs - Replace current DEBUG to TRACE calls in code, reserving DEBUG calls for more verbose debugging later on (output of variables etc) - add 'export CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT=y' in qemu-coreboot(fb)whiptail-tpm1(-hotp) boards to see it in action 2023-02-20 16:01:17 +00:00			`TRACE "Under /bin/wget-measure.sh:die"`
wget and measure files into the PCR 2017-03-27 22:03:29 +00:00			`echo >&2 "$@"`
			`exit 1`
			`}`

			`INDEX="$1"`
			`URL="$2"`

			`if [ -z "$INDEX" -o -z "$URL" ]; then`
			`die "Usage: $0 pcr-index url"`
			`fi`


			`wget "$URL" \|\| die "$URL: failed"`

			FILE="`basename "$URL"`"
Addition of qemu-(fb)whiptail-tpm2(-hotp) boards -coreboot support of TPM v2.0 (shared config for TPM2 support across all 4 previous variations) -swtpm set to be launched under TPM v2.0 mode under board config -Documentation file under each board.md softlinks to qemu-coreboot-fbwhiptail-tpm1.md (which has been generalized) This is skeleton for TPM v2 integration under Heads ------------- WiP TODO: - libcurl cannot be built as a tpm2-tools dependency as of now not sure why. curl currently needs to be added in board config to be built - Note: tpm-reset (master and here) needs some review, no handle of no tpm use case. Caller is responsible to not call it otherwise does nothing - init tries to bind fd and fails currently - Note: Check if whiptail is different of fbwhiptail in clearing screen. As of now every clear seems to be removed, still whiptail clears previous console output - When no OS' /boot can be mounted, do not try to TPM reset (will fail) - seal-hotpkey is not working properly - setting disk unlock key asks for TPM ownership passphrase (sealing in NV requires ownership, but text is misleading user as if reowning TPM) - We should cache input, feed tpm behind the scene and wipe passphrase and state clearly that this is TPM disk unlock kye passphrase. - primary key from TPM2 is invalid most of the time from kexec-select-boot and verifying global hashes but is setuped correctly at disk unlock key setup - would be nice to take advantage of bash function tracing to understand where we are for debugging purposes, code takes ash in consideration only - tpmr says it implements nv calls but actually doesn't. Removing those falsely wrapped functions would help. - Implementing them would be better - REVIEW TODOS IN CODE - READD CIRCLECI CONFIG Current state: - TPM unseal works without disk unlock key and generates TOTP properly (was missing die condition at unseal to not produce always good TOTP even if invalid) - TPM disk encryption key fails. Hypothesis is that sealing with USB drivers loaded and measures in inconsistent with sealed with/without. - TPM disk unsealing happens without USB modules being loaded in non-HOTP setup. This fails. - Current tests are with fbwhiptail (no clear called so having traces on command line of what happens) - Testing with HOTP implementation for sealing/unsealing since that forces USB module loads on each boot to remove this from failing possibilities 2022-08-25 18:43:31 +00:00			`tpmr extend -ix "$INDEX" -if "$FILE" \|\| die "$FILE: tpm extend failed"`
wget and measure files into the PCR 2017-03-27 22:03:29 +00:00