X-Git-Url: https://git.phdru.name/?a=blobdiff_plain;f=mimedecode.py;h=70776d3d1401bb3c39d31ef512ff853a2265d0d4;hb=cb1f0763841bbeced908b053960baf228b692ca1;hp=1e5b18b388dbcb2d6104c12911742181648118fc;hpb=fa51f1e417da0f8d66649ebe67c78a58b1b88eae;p=mimedecode.git diff --git a/mimedecode.py b/mimedecode.py index 1e5b18b..70776d3 100755 --- a/mimedecode.py +++ b/mimedecode.py @@ -18,7 +18,7 @@ Broytman mimedecode.py version %s, %s def usage(code=0, errormsg=''): version(0) sys.stdout.write("""\ -Usage: %s [-h|--help] [-V|--version] [-cCDP] [-H|--host=hostname] [-f charset] [-d header] [-p header:param] [-r header] [-R header:param] [--remove-params=header] [-beit mask] [-o output_file] [input_file [output_file]] + Usage: %s [-h|--help] [-V|--version] [-cCDP] [-H|--host=hostname] [-f charset] [-d header1[,h2,...]|*[,-h1,...]] [-p header1[,h2,h3,...]:param1[,p2,p3,...]] [-r header1[,h2,...]|*[,-h1,...]] [-R header1[,h2,h3,...]:param1[,p2,p3,...]] [--set-header header:value] [--set-param header:param=value] [-beit mask] [-o output_file] [input_file [output_file]] """ % me) if errormsg: sys.stderr.write(errormsg + '\n') @@ -94,29 +94,95 @@ def decode_header_param(msg, header, param): msg.set_param(param, new_value, header) -def decode_headers(msg): - "Decode message headers according to global options" - - for header in gopts.remove_headers: - del msg[header] - - for header in gopts.remove_all_params: - value = msg[header] - if value is None: - continue - if ';' not in value: - continue - del msg[header] - msg[header] = value.split(';')[0].strip() +def _get_exceptions(list): + return [x[1:].lower() for x in list[1:] if x[0]=='-'] - for header, param in gopts.remove_header_params: - msg.del_param(param, header) +def _decode_headers_params(msg, header, decode_all_params, param_list): + if decode_all_params: + params = msg.get_params(header=header) + if params: + for param, value in params: + if param not in param_list: + decode_header_param(msg, header, param) + else: + for param in param_list: + decode_header_param(msg, header, param) + +def _remove_headers_params(msg, header, remove_all_params, param_list): + if remove_all_params: + params = msg.get_params(header=header) + if params: + if param_list: + for param, value in params: + if param not in param_list: + msg.del_param(param, header) + else: + value = msg[header] + if value is None: # No such header + return + if ';' not in value: # There are no parameters + return + del msg[header] # Delete all such headers + # Get the value without parameters and set it back + msg[header] = value.split(';')[0].strip() + else: + for param in param_list: + msg.del_param(param, header) - for header in gopts.decode_headers: - decode_header(msg, header) +def decode_headers(msg): + "Decode message headers according to global options" - for header, param in gopts.decode_header_params: - decode_header_param(msg, header, param) + for header_list in gopts.remove_headers: + header_list = header_list.split(',') + if header_list[0] == '*': # Remove all headers except listed + header_list = _get_exceptions(header_list) + for header in msg.keys(): + if header.lower() not in header_list: + del msg[header] + else: # Remove listed headers + for header in header_list: + del msg[header] + + for header_list, param_list in gopts.remove_headers_params: + header_list = header_list.split(',') + param_list = param_list.split(',') + remove_all_params = param_list[0] == '*' # Remove all params except listed + if remove_all_params: + param_list = _get_exceptions(param_list) + if header_list[0] == '*': # Remove for all headers except listed + header_list = _get_exceptions(header_list) + for header in msg.keys(): + if header.lower() not in header_list: + _remove_headers_params(msg, header, remove_all_params, param_list) + else: # Decode for listed headers + for header in header_list: + _remove_headers_params(msg, header, remove_all_params, param_list) + + for header_list in gopts.decode_headers: + header_list = header_list.split(',') + if header_list[0] == '*': # Decode all headers except listed + header_list = _get_exceptions(header_list) + for header in msg.keys(): + if header.lower() not in header_list: + decode_header(msg, header) + else: # Decode listed headers + for header in header_list: + decode_header(msg, header) + + for header_list, param_list in gopts.decode_header_params: + header_list = header_list.split(',') + param_list = param_list.split(',') + decode_all_params = param_list[0] == '*' # Decode all params except listed + if decode_all_params: + param_list = _get_exceptions(param_list) + if header_list[0] == '*': # Decode for all headers except listed + header_list = _get_exceptions(header_list) + for header in msg.keys(): + if header.lower() not in header_list: + _decode_headers_params(msg, header, decode_all_params, param_list) + else: # Decode for listed headers + for header in header_list: + _decode_headers_params(msg, header, decode_all_params, param_list) def set_header(msg, header, value): @@ -299,9 +365,12 @@ class GlobalOptions: # A list of headers to remove remove_headers = [] # A list of headers parameters to remove - remove_header_params = [] - # A list of headers to be stripped of all parameters - remove_all_params = [] + remove_headers_params = [] + + # A list of header/value pairs to set + set_header_value = [] + # A list of header/parameter/value triples to set + set_header_param = [] totext_mask = [] # A list of content-types to decode binary_mask = [] # A list to pass through @@ -320,7 +389,7 @@ def get_opt(): try: options, arguments = getopt(sys.argv[1:], 'hVcCDPH:f:d:p:r:R:b:e:i:t:o:', - ['help', 'version', 'host=', 'remove-params=']) + ['help', 'version', 'host=', 'set-header=', 'set-param=']) except GetoptError: usage(1) @@ -338,6 +407,8 @@ def get_opt(): elif option == '-f': gopts.default_encoding = value elif option == '-d': + if value.startswith('*'): + gopts.decode_headers = [] gopts.decode_headers.append(value) elif option == '-D': gopts.decode_headers = [] @@ -348,9 +419,16 @@ def get_opt(): elif option == '-r': gopts.remove_headers.append(value) elif option == '-R': - gopts.remove_header_params.append(value.split(':', 1)) - elif option == '--remove-params': - gopts.remove_all_params.append(value) + gopts.remove_headers_params.append(value.split(':', 1)) + elif option == '--set-header': + gopts.set_header_value.append(value.split(':', 1)) + elif option == '--set-param': + header, value = value.split(':', 1) + if '=' in value: + param, value = value.split('=', 1) + else: + param, value = value.split(':', 1) + gopts.set_header_param.append((header, param, value)) elif option == '-t': gopts.totext_mask.append(value) elif option == '-b': @@ -416,8 +494,16 @@ if __name__ == "__main__": gopts.outfile = outfile output = outfile.write + msg = email.message_from_file(infile) + + for header, value in gopts.set_header_value: + msg[header] = value + + for header, param, value in gopts.set_header_param: + msg.set_param(param, value, header) + try: - decode_message(email.message_from_file(infile)) + decode_message(msg) finally: infile.close() outfile.close()