From: Johannes Berg Date: Mon, 9 Oct 2017 11:50:57 +0200 Subject: [PATCH] regdb: write firmware file format (version code 20) TODO: clean up the Makefile stuff ... Signed-off-by: Johannes Berg --- create mode 100755 db2fw.py --- a/Makefile +++ b/Makefile @@ -1,7 +1,5 @@ # Install prefix PREFIX ?= /usr -CRDA_PATH ?= $(PREFIX)/lib/crda -CRDA_KEY_PATH ?= $(CRDA_PATH)/pubkeys MANDIR ?= $(PREFIX)/share/man/ @@ -30,39 +28,47 @@ REGDB_AUTHOR ?= $(shell if [ -f $(DISTRO fi) REGDB_PRIVKEY ?= ~/.wireless-regdb-$(REGDB_AUTHOR).key.priv.pem -REGDB_PUBKEY ?= $(REGDB_AUTHOR).key.pub.pem - -REGDB_UPSTREAM_PUBKEY ?= sforshee.key.pub.pem +REGDB_PUBCERT ?= $(REGDB_AUTHOR).x509.pem REGDB_CHANGED = $(shell $(SHA1SUM) -c --status sha1sum.txt >/dev/null 2>&1; \ if [ $$? -ne 0 ]; then \ - echo maintainer-clean $(REGDB_PUBKEY); \ + echo maintainer-clean $(REGDB_PUBCERT); \ fi) .PHONY: all clean mrproper install maintainer-clean install-distro-key -all: $(REGDB_CHANGED) regulatory.bin sha1sum.txt +all: $(REGDB_CHANGED) regulatory.db.p7s sha1sum.txt clean: @rm -f *.pyc *.gz maintainer-clean: clean - @rm -f regulatory.bin + @rm -f regulatory.db regulatory.db.p7s mrproper: clean maintainer-clean - @echo Removed public key, regulatory.bin and compresed man pages - @rm -f $(REGDB_PUBKEY) .custom + @echo Removed public key, regulatory.db* and compressed man pages + @rm -f $(REGDB_PUBCERT) .custom -regulatory.bin: db.txt $(REGDB_PRIVKEY) $(REGDB_PUBKEY) - @echo Generating $@ digitally signed by $(REGDB_AUTHOR)... - ./db2bin.py regulatory.bin db.txt $(REGDB_PRIVKEY) +regulatory.db: db.txt db2fw.py + @echo "Generating $@" + ./db2fw.py regulatory.db db.txt + +regulatory.db.p7s: regulatory.db $(REGDB_PRIVKEY) $(REGDB_PUBCERT) + @echo "Signing regulatory.db (by $(REGDB_AUTHOR))..." + @openssl smime -sign \ + -signer $(REGDB_PUBCERT) \ + -inkey $(REGDB_PRIVKEY) \ + -in $< -nosmimecap -binary \ + -outform DER -out $@ sha1sum.txt: db.txt sha1sum $< > $@ -$(REGDB_PUBKEY): $(REGDB_PRIVKEY) - @echo "Generating public key for $(REGDB_AUTHOR)..." - openssl rsa -in $(REGDB_PRIVKEY) -out $(REGDB_PUBKEY) -pubout -outform PEM +$(REGDB_PUBCERT): $(REGDB_PRIVKEY) + @echo "Generating certificate for $(REGDB_AUTHOR)..." + @openssl req -config regulatory.openssl.conf \ + -key $(REGDB_PRIVKEY) -days 36500 -utf8 -nodes -batch \ + -x509 -outform PEM -out $(REGDB_PUBCERT) @echo $(REGDB_PUBKEY) > .custom @@ -97,16 +103,7 @@ install-distro-key: maintainer-clean $(D # make maintainer-clean # make # sudo make install -install: regulatory.bin.5.gz - install -m 755 -d $(DESTDIR)/$(CRDA_PATH) - install -m 755 -d $(DESTDIR)/$(CRDA_KEY_PATH) - if [ -f .custom ]; then \ - install -m 644 -t $(DESTDIR)/$(CRDA_KEY_PATH)/ $(shell cat .custom); \ - fi - install -m 644 -t $(DESTDIR)/$(CRDA_KEY_PATH)/ $(REGDB_UPSTREAM_PUBKEY) - install -m 644 -t $(DESTDIR)/$(CRDA_PATH)/ regulatory.bin +install: regulatory.db.5.gz + install -m 644 -t $(DESTDIR)/$(CRDA_PATH)/ regulatory.db install -m 755 -d $(DESTDIR)/$(MANDIR)/man5/ - install -m 644 -t $(DESTDIR)/$(MANDIR)/man5/ regulatory.bin.5.gz - -uninstall: - rm -rf $(DESTDIR)/$(CRDA_PATH)/ + install -m 644 -t $(DESTDIR)/$(MANDIR)/man5/ regulatory.db.5.gz --- a/README +++ b/README @@ -18,8 +18,8 @@ python module is used by the web viewer implemented as a MoinMoin macro (and used on http://wireless.kernel.org) to allow viewing the database for verification. -The dbparse module is also used by db2bin.py, the `compiler', which -compiles and signs the binary database. +The dbparse module is also used by db2bin.py and db2fw.py, the `compilers' +that compile the database to its binary formats. For more information, please see the CRDA git repository: --- /dev/null +++ b/db2fw.py @@ -0,0 +1,133 @@ +#!/usr/bin/env python + +from cStringIO import StringIO +import struct +import hashlib +from dbparse import DBParser +import sys + +MAGIC = 0x52474442 +VERSION = 20 + +if len(sys.argv) < 3: + print 'Usage: %s output-file input-file' % sys.argv[0] + sys.exit(2) + +def create_rules(countries): + result = {} + for c in countries.itervalues(): + for rule in c.permissions: + result[rule] = 1 + return result.keys() + +def create_collections(countries): + result = {} + for c in countries.itervalues(): + result[(c.permissions, c.dfs_region)] = 1 + return result.keys() + + +def be32(output, val): + output.write(struct.pack('>I', val)) +def be16(output, val): + output.write(struct.pack('>H', val)) + +class PTR(object): + def __init__(self, output): + self._output = output + self._pos = output.tell() + be16(output, 0) + self._written = False + + def set(self, val=None): + if val is None: + val = self._output.tell() + assert val & 3 == 0 + self._offset = val + pos = self._output.tell() + self._output.seek(self._pos) + be16(self._output, val >> 2) + self._output.seek(pos) + self._written = True + + def get(self): + return self._offset + + @property + def written(self): + return self._written + +p = DBParser() +countries = p.parse(file(sys.argv[2])) +rules = create_rules(countries) +rules.sort(cmp=lambda x, y: cmp(x.freqband, y.freqband)) +collections = create_collections(countries) +collections.sort(cmp=lambda x, y: cmp(x[0][0].freqband, y[0][0].freqband)) + +output = StringIO() + +# struct regdb_file_header +be32(output, MAGIC) +be32(output, VERSION) + +country_ptrs = {} +countrynames = countries.keys() +countrynames.sort() +for alpha2 in countrynames: + coll = countries[alpha2] + output.write(struct.pack('>cc', str(alpha2[0]), str(alpha2[1]))) + country_ptrs[alpha2] = PTR(output) +output.write('\x00' * 4) + +reg_rules = {} +flags = 0 +for reg_rule in rules: + freq_range, power_rule = reg_rule.freqband, reg_rule.power + reg_rules[reg_rule] = output.tell() + assert power_rule.max_ant_gain == 0 + flags = 0 + # convert to new rule flags + assert reg_rule.flags & ~0x899 == 0 + if reg_rule.flags & 1<<0: + flags |= 1<<0 + if reg_rule.flags & 1<<3: + flags |= 1<<1 + if reg_rule.flags & 1<<4: + flags |= 1<<2 + if reg_rule.flags & 1<<7: + flags |= 1<<3 + if reg_rule.flags & 1<<11: + flags |= 1<<4 + rule_len = 16 + cac_timeout = 0 # TODO + if not (flags & 1<<2): + cac_timeout = 0 + if cac_timeout: + rule_len += 2 + output.write(struct.pack('>BBHIII', rule_len, flags, power_rule.max_eirp * 100, + freq_range.start * 1000, freq_range.end * 1000, freq_range.maxbw * 1000, + )) + if cac_timeout: + output.write(struct.pack('>H', cac_timeout)) + while rule_len % 4: + output.write('\0') + rule_len += 1 + +for coll in collections: + for alpha2 in countrynames: + if (countries[alpha2].permissions, countries[alpha2].dfs_region) == coll: + assert not country_ptrs[alpha2].written + country_ptrs[alpha2].set() + slen = 3 + output.write(struct.pack('>BBBx', slen, len(list(coll[0])), coll[1])) + coll = list(coll[0]) + for regrule in coll: + be16(output, reg_rules[regrule] >> 2) + if len(coll) % 2: + be16(output, 0) + +for alpha2 in countrynames: + assert country_ptrs[alpha2].written + +outfile = open(sys.argv[1], 'w') +outfile.write(output.getvalue())