mbedtls/scripts/generate_certs.sh
Hanno Becker 4a4047c326 Add script to auto-generate certs.c
This commit adds the script scripts/generate_certs.sh which
parses library/certs.c and inserts certificate and key files
for any block of the form

   /* BEGIN FILE [string|binary] [variable|macro] NAME FILE */
   ...
   /* END FILE */

Here, the first argument string / binary indicates whether the
file should be inserted as a string or as a binary array. The
second argument indicates whether the resulting object should
be registered as a C variable or a macro.

This script allows to easily update certs.c in case any of the
test certificates from tests/data_files change, or new test
certificates / keys need to be added.
2019-08-23 11:33:20 +01:00

67 lines
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Executable File

#!/bin/sh
if [ -d include/mbedtls ]; then :; else
echo "$0: must be run from root" >&2
exit 1
fi
CERTS="library/certs.c"
CERTS_TMP="${CERTS}.tmp"
CERTS_NEW="${CERTS}.new"
# Remove bodies of BEGIN FILE ... END FILE blocks
SED_RM_FILE_BODIES=":o; /BEGIN FILE/!{p;n;bo}; /BEGIN FILE/{p; n; :i; /END FILE/{n; bo}; n; bi}"
sed -n "${SED_RM_FILE_BODIES}" $CERTS > ${CERTS_TMP}
while IFS= read -r line; do
echo "$line"
CMD=`echo "$line" | sed -n 's/^\/\* BEGIN FILE \([^ ]*\) \([^ ]*\) \([^ ]*\) \([^ ]*\)*.*$/\1 \2 \3 \4/p'`
if [ -n "$CMD" ]; then
enc=$(echo "$CMD" | cut -f1 -d' ' )
type=$(echo "$CMD" | cut -f2 -d' ' )
name=$(echo "$CMD" | cut -f3 -d' ' )
file=$(echo "$CMD" | cut -f4 -d' ' )
if [ "$type" != "variable" ] && [ "$type" != "macro" ]; then
exit 1
fi
if [ "$enc" != "string" ] && [ "$enc" != "binary" ]; then
exit 1
fi
# Support 'binary' and 'string' encoding
# Support 'variable' and 'macro' types
if [ "$enc" = "binary" ]; then
DATA=`xxd -i "$file" | tail -n +2 | head -n -2 | sed 's/^[ ]*/ /'`
elif [ "$enc" = "string" ]; then
DATA=`cat "$file" | sed 's/^/ \"/;s/$/\\r\\n\"/'`
fi
if [ "$type" = "variable" ]; then
if [ "$enc" = "binary" ]; then
echo "const unsigned char ${name}[] = {"
xxd -i "$file" | sed 's/^[ ]*/ /' | tail -n +2 | head -n -2
echo "};"
elif [ "$enc" = "string" ]; then
echo "const char ${name}[] ="
cat "$file" | head -n -1 | sed 's/^/ \"/;s/$/\\r\\n\"/'
cat "$file" | tail -n 1 | sed 's/^/ \"/;s/$/\\r\\n\";/'
fi
elif [ "$type" = "macro" ]; then
if [ "$enc" = "binary" ]; then
printf '%-77s\\\n' "#define ${name} {"
xxd -i "$file" | sed 's/^[ ]*/ /' | tail -n +2 | head -n -2 |
xargs -d'\n' printf '%-77s\\\n'
echo "}"
elif [ "$enc" = "string" ]; then
printf '%-75s\\\n' "#define ${name}"
cat "$file" | head -n -1 | sed 's/^/ \"/; s/$/\\r\\n\"/' | xargs -d'\n' printf '%-75s\\\n'
cat "$file" | tail -n 1 | sed 's/^/ \"/; s/$/\\r\\n\"/'
fi
fi
echo "/* END FILE */"
fi
done < ${CERTS_TMP} > ${CERTS}